CN107132746A - a processing box - Google Patents

Abstract

The invention relates to a processing box, comprising a processing box shell, a photosensitive element which is rotatably arranged in the shell, and a bracket for supporting the photosensitive element, wherein the photosensitive element comprises a photosensitive cylinder and a power transmission device arranged at one longitudinal end of the photosensitive cylinder; because the power receiving part in the power transmission device is not provided with the ball body, when the processing box or the photosensitive element is in the transportation process, the power receiving part is not possible to be separated from the gear part of the power transmission device, so that the integral stability of the power transmission device is effectively ensured, and the unfavorable condition that an end user cannot use the processing box due to the failure of the power transmission device can be avoided.

Description

a processing box

technical field

The invention relates to the field of electrophotographic imaging, in particular to a process box detachably installed in an electrophotographic imaging device.

Background technique

Electrophotographic imaging equipment is one of the indispensable equipment in the modern office field. Common electrophotographic imaging equipment includes laser printers, laser copiers, etc., both of which use laser beams loaded with target information to scan the surface of the photosensitive element. An electrostatic latent image is formed on the surface of the component, and then the electrostatic latent image is developed with a developer, and finally the developed electrostatic latent image is transferred to the medium material through the transfer device in the equipment, thus completing the imaging process.

The above-mentioned developer is generally housed in a process cartridge detachably installed in the electrophotographic image forming apparatus, and the above photosensitive element can be installed inside the electrophotographic image forming apparatus, and can also be installed in the process cartridge.

Take the above-mentioned laser printer and the photosensitive element installed in the process box as an example, the photosensitive element includes a photosensitive cylinder coated with photosensitive material and a power transmission device installed at one end of the photosensitive cylinder, and the power transmission device is connected from the inside of the laser printer. Receive the driving force, and transmit the received driving force to the photosensitive element to drive the photosensitive element to rotate.

An existing power transmission device includes a gear part fixedly installed at one end of the photosensitive cylinder and a power receiving part installed in the gear part and freely swinging. One end of the power receiving part is a sphere, and the power is transferred through a pin. The receiving part is combined with the gear part, and the other end receives the driving force from the inside of the laser printer, and the pin transmits the driving force to the gear part, and then drives the photosensitive cylinder to rotate. Because one end of the power receiving part installed in the gear part is a sphere in this structure, the rotation axis of the power receiving part can swing freely relative to the rotation axis of the photosensitive cylinder, that is, the two rotation axes can be coaxial or Can have a certain angle of inclination.

As mentioned above, the existing power receiving member can freely swing in the gear portion, therefore, the sphere of the power receiving member is not tightly fitted with the gear portion, and when the process cartridge or the photosensitive element is in the transportation process, the power receiving member has It may be disengaged from the gear part, so that the power transmission device fails as a whole, thereby causing the unfavorable situation that the end user cannot use the process box. Therefore, the existing power transmission device and even the existing process box need to be further improved.

Contents of the invention

The present invention provides a process box, the power receiver installed in the process box is not equipped with a sphere, its rotation axis is always coaxial with the rotation axis of the photosensitive cylinder, and the power receiver and the gear part are integrated through a connecting mechanism, therefore, The power receiving member of the present invention does not have the possibility of disengaging from the gear part.

To achieve the above object, the present invention adopts the following scheme:

A process cartridge comprising a process cartridge casing, a photosensitive element rotatably installed in the casing, and a bracket for supporting the photosensitive element, the photosensitive element including a photosensitive cylinder and a motor mounted on one longitudinal end of the photosensitive cylinder The transmission device, the bracket includes a third through hole for allowing the power transmission device to pass through, a first protrusion and a second protrusion located at the periphery of the third through hole, and the bracket also includes a third protrusion located at the first protrusion and the second protrusion. The gap between the two projections is located upstream of the first projection and the second projection along the installation direction of the process box; in order to control the movement of the power transmission device, the process box also includes a power transmission The action rod connected with the device, the action rod passes through the gap and combines with the power transmission device.

Preferably, the notch is a U-shaped portion with a bottom surface of the notch; after the action rod is combined with the power transmission device, a neutral portion is formed between the bottom surface of the action rod and the position where the projection of the action rod on the bottom surface of the notch is located, That is to say, after the action rod is combined with the power transmission device, the bottom surface of the action rod does not touch the position where the projection of the action rod on the bottom surface of the notch is located.

As another optional solution, the notch is a mouth-shaped part having a notch bottom surface and a notch top surface at the same time, and the action rod passes through the space between the notch top surface and the notch bottom surface. When the action rod is combined with the power transmission device Finally, a neutral part is formed between the bottom surface of the action rod and the position where the projection of the action rod on the bottom surface of the notch is located, and at the same time, a neutral position is also formed between the action rod and the position where the projection of the action rod is on the top surface of the notch. department.

Further, the process box also includes a fixing part arranged therein, and the fixing part is used for fixing and supporting the power transmission device. In the embodiment of the present invention, the fixing part protrudes inward along the inner wall of the third through hole Ribs, along the installation direction of the process box, the ribs are located downstream of the gap.

As mentioned above, since the power receiving member in the embodiment of the present invention is not equipped with a ball, therefore, when the process box or the photosensitive element is in the transportation process, the power receiving member will not have the possibility of disengaging from the gear part, thereby effectively The overall stability of the power transmission device is guaranteed, and the unfavorable situation that the end user cannot use the process box due to failure of the power transmission device will not occur.

Description of drawings

Fig. 1 is a schematic view of the overall structure of a process cartridge according to the present invention.

Fig. 2 is an exploded schematic diagram of a part of the structure of the process cartridge involved in the present invention.

Fig. 3A is a schematic diagram of the combination of the action rod and the power transmission device in the present invention.

Fig. 3B is a schematic structural view of the action rod in the present invention.

Fig. 3C is a schematic structural diagram of middleware in the present invention.

Fig. 3D is a schematic structural diagram of the gear part in the present invention.

Fig. 3E is a schematic diagram of the structure of the stent of the present invention.

Fig. 4A is a cross-sectional view of the action rod and the power transmission device along the X direction in the present invention.

Fig. 4B is a sectional view along the Y direction of the action rod and the power transmission device in the present invention.

Fig. 5 is a structural schematic diagram of a connecting piece in another embodiment of the power transmission device of the present invention.

Fig. 6A is a schematic diagram of the retracted state of the power receiving member in the present invention.

Fig. 6B is a schematic diagram of the extended state of the power receiving member in the present invention.

detailed description

Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Fig. 1 is a schematic view of the overall structure of a process cartridge according to the present invention. As shown in the figure, define the longitudinal direction of the process cartridge C (the longitudinal direction of the photosensitive element) as longitudinal X, the installation direction A of the process cartridge as horizontal Y, the direction perpendicular to the longitudinal X and lateral Y is vertical Z, and The vertical, horizontal, and vertical orientations described above are consistent with this definition.

The process cartridge C includes a process cartridge housing 1 and a photosensitive member (not shown) rotatably mounted in the housing, the photosensitive member having a rotation axis L1 comprising a photosensitive cylinder and a photosensitive cylinder mounted at one longitudinal end of the photosensitive cylinder. The power transmission device 2, in order to ensure that the power transmission device 2 receives and transmits the driving force stably, the process box C also includes an action rod 3 connected with the power transmission device 2, and the action rod 3 includes the longitudinal direction X and the transverse direction of the process box. Swing in the plane where Y is located.

Fig. 2 is the exploded schematic view of the partial structure of the process box involved in the present invention; Fig. 3 A is the combination schematic diagram of action bar and power transmission device in the present invention; Fig. 3 B is the structural representation of action bar in the present invention; Fig. 3D is a schematic structural view of a gear part in the present invention; Fig. 3E is a schematic structural view of a bracket in the present invention; Fig. 4A is a cross-sectional view of an action bar and a power transmission device in the present invention along the X direction; Fig. 4B is a schematic view of the present invention A cross-sectional view of the action rod and the power transmission device along the Y direction in the invention.

[Action lever and the structure that cooperates with the process box]

As shown in Figures 1 and 2, in order to support the photosensitive element, the process box C also includes a bracket 12 installed on the housing 1, the bracket 12 is used to support the photosensitive element, and at the same time, to support and protect the process box C The gear set of the process box housing 1 includes an end cover 11 installed on one longitudinal end of the process box C. As shown in the figure, the end cover 11 is on the same side as the power transmission device 2, and the action lever 3 is installed on the process box On the housing 1, specifically on the end cover 11, when the process cartridge is installed into the electrophotographic imaging device (hereinafter referred to as "device") and the device cover door is closed, the action lever 3 touches the cover door , and is subjected to the force of the cover door to swing in the plane including the longitudinal X and transverse Y of the process box.

In the embodiment of the present invention, the action rod 3 is a lever, that is, the action rod 3 will rotate around the rotating part when it is working. A convex part combined with the concave part, or a convex part is provided on the end cover 11 , and a concave part combined with the convex part is provided at a corresponding position of the action rod 3 . The bracket 12 is also provided with a notch 120 allowing the action rod 3 to pass through, and the structure of the bracket 12 will be described in detail below.

As shown in Fig. 3A and Fig. 3B, the action rod 3 comprises an intermediate rod 30, a force receiving portion 31 and a lifting portion 32 respectively located at two ends of the intermediate rod, and an effect rod bottom surface 34 extending along the length direction of the action rod, the bottom surface 34 of the action rod Extend from one free end of the action rod to the other free end along the length direction of the action rod, that is, extend from the force receiving part 31 to the lifting part 32; the force receiving part 31 includes a pressing surface 31a and a holding Surface 31b, the pressing surface 31a is an inclined surface, the inclined direction of which is inclined relative to the rotation axis L1 of the photosensitive element in the plane including the longitudinal direction X and the transverse direction Y of the process cartridge, and along the -X direction, the inclined surface is aligned with the photosensitive element The distance between the rotation axes L1 is larger and larger for receiving the force from the door during the process of closing the door, and the retaining surface 31b is used for keeping in contact with the door after the door is closed and continuously receiving Action force from the cover door; the lifting part 32 includes an insertion block 321 arranged at the free end of the action rod 3 , and the insertion block 321 is combined with the power transmission device 2 . In the embodiment of the present invention, the rotating part is described by setting a concave part on the end cover 11 and a convex part combined with the concave part at the corresponding position of the working rod 3 to illustrate the working rod 3. Therefore, the working rod 3 is also It includes a rotating protrusion 33 protruding from the middle rod 30. Correspondingly, as shown in FIG. , the rotating protrusions 33 and the rotating grooves 113 are set to two; continue as shown in FIG. The vertical direction of the box protrudes (as shown in Figure 2), but the two rotating protrusions 33 are separated from each other. The friction between the grooves 113 increases the flexibility of the action rod 3 .

In order to further enhance the stability of the action rod 3 when it is working, as shown in Figure 2, the end cover 11 is also provided with a guide groove 110, and the guide groove 110 is combined with the middle rod 30 of the action rod. When the action rod 3 moves , the guide groove 110 is used to guide the action rod 3, so as to better ensure that the movement track of the action rod 3 is in the plane including the longitudinal direction X and the transverse direction Y of the process cartridge. Simultaneously, in order to prevent the action bar 3 from falling off from the end cover 11, the process box housing 1 also includes a protective cover 13 installed on the end cover 11, and the same, the protective cover 13 can also play a role in maintaining the movement of the action bar 3 The effect of trajectory.

[Structure of the stand]

The bracket 12 will be described below in conjunction with FIG. 3A and FIG. 3E . For ease of description, in FIG. 3A , only the combined state of the bracket 12 , the power transmission device 2 and the action rod 3 is shown.

First, as shown in FIG. 3E , the bracket 12 includes a third through hole 124 for allowing the power transmission device to pass through, a first protrusion 121 and a second protrusion 122 located around the third through hole, and The gap 120 between the bump 121 and the second bump 122 . Along the installation direction A of the process box, the notch 120 is located upstream of the first projection 121 and the second projection 122. , the notch 120 is also located upstream of the power transmission device 2; preferably, the notch 120 is a U-shaped portion with a notch bottom surface 123, and the notch bottom surface 123 is a plane; it should be noted that the notch bottom surface 123 can also be It is a curved surface or an irregular surface, that is to say, the bottom surface 123 of the notch can be defined as: the surface of the notch 120 along the rotation axis L1 closest to the photosensitive cylinder.

As shown in Figure 3A, action bar 3 passes breach 120 and combines with power transmission device 2, and power transmission device 2 passes through the 3rd through hole 124, and is installed on the process box by being installed on a longitudinal end of photosensitive element, support 12 is also fixedly installed on the process box. After the action rod 3 is combined with the power transmission device 2, a neutral part S is formed between the position of the projection of the action rod and the action rod on the notch bottom surface 123, that is, the action rod bottom surface 34 and the action rod are on the notch bottom surface 123. The positions where the projections are located are not in contact. As shown in the figure, there is a height difference h between the two. When the power transmission device 2 moves toward the direction close to the photosensitive cylinder, the neutral part S is used to provide the allowable lifting part 32 The space that also moves toward the direction close to the photosensitive cylinder prevents the problem that the power transmission device 2 is difficult to disengage from the power output member due to the movement of the lifting part 32 being blocked.

Considering that the function of the notch 120 is to allow the action rod 3 to pass through and combine with the power transmission device 2, and to provide a movement space for part of the action rod 3 to move telescopically with the power transmission device 2, it is obvious that the notch 120 not only It can be a U-shaped portion with a notch bottom surface 123, or a through hole, that is, the notch 120 also has a notch top surface (not shown), and the notch 120 at this time is a mouth-shaped portion, and the action rod 3 passes through the notch top surface and At the same time, in order to ensure that the lifting part 32 is directed away from the movement space of the photosensitive cylinder, after the action rod 3 is combined with the power transmission device 2, the action rod 3 will be separated from the action rod 123 on the bottom surface of the notch. In addition to forming a gap between the position of the projection on the top surface, a gap is also formed between the position of the projection of the action rod on the top surface of the notch; similarly, the top surface of the notch can be defined as: the notch 120 along the The face where the axis of rotation L1 is farthest from the photosensitive cylinder.

As mentioned above, the notch 12 can be a U-shaped portion with only the notch bottom surface 123, or a mouth-shaped portion with both the notch top surface and the notch bottom surface. However, considering the product material cost and the ease of product assembly, the It is more advantageous when the notch 120 is a U-shaped portion with only the bottom surface 123 of the notch. Since there is no top surface in the notch at this time, the notch 120 is not obstructed when viewed from the power transmission device 2 toward the photosensitive cylinder along the rotation axis L1, thus , the action rod 3 can pass through the notch 120 faster, and the bracket with the U-shaped notch requires less material during production, so its cost is also lower.

[Structure of power transmission device]

Embodiment one

As shown in Figure 2, the power transmission device 2 includes a power receiving part 21, a connecting part 27, a gear part 25 and a reset part 24, and the reset part 24 is connected with the connecting part 27 and the gear part 25, and the power receiving part 21 and the connecting part 27 is connected, and the connecting piece 27 is also matched with the gear part 25 for transmitting the driving force received by the power receiving part 21 from the outside to the gear part 25; the gear part 25 is also fixedly connected with a longitudinal end of the photosensitive cylinder, It is used to drive the photosensitive cylinder to rotate after receiving the driving force; the lifting part 32 of the action rod 3 is combined with the connecting part 27, and is used to control the movement of the connecting part 27 and then control the extension of the power receiving part 21; the present invention Among them, the rotation axis L2 of the power receiving part, the rotation axis L3 of the gear part 25, after the power transmission device 2 is installed, no matter what state the power transmission device 2 is in, the rotation axis L2 of the power receiving part, the rotation axis L3 of the gear part 25 The rotation axis L3 of the photosensitive element is always coaxial with the rotation axis L1 of the photosensitive element.

The power receiver 21 includes a first part 211 and a second part 212 connected to each other. The second part 212 is used to combine with an external power output source and receive the driving force from the outside. The first part 211 is a columnar body for Connect with connector 27. As shown in Figure 2, the reset member 24 is a pair of extension springs, one end of the extension spring is fixed on the connector 27, and the other end is fixed on the gear part 25; in order to realize the connection between the power receiving member 21 and the connector 27, The commonly used solution is: a first connecting hole 211a is set on the first part 211 of the power receiving member, and a second connecting hole 27a is correspondingly set on the connecting piece 27, and the connecting pin 26 passes through the second connecting hole 27a and the first connecting hole 27a respectively. The connecting hole 211a; of course, the connection between the power receiving member 21 and the connecting member 27 can also be realized by providing a protrusion on the first part 211 of the power receiving member and providing a slot on the connecting member 27 .

The connecting piece 27 includes a split middle piece 22 and a support piece 23, the power receiving piece 21 passes through the middle piece 22 and enters into the support piece 23, and the power receiving piece 21 and the support piece 23 are connected in the above-mentioned manner, thus, The middle piece 22, the supporting piece 23 and the power receiving piece 21 are connected as a whole.

The support member 23 includes a body 230, a support hole 232 facing the middle member 22, and a power transmission part 233 protruding outward from the body, the first part 211 of the power receiving part enters the support hole 232, the power transmission part 233 and the gear part 25 to transmit driving force to the gear part 25, the support hole 232 can be a through hole or a blind hole, as long as it can accommodate the first part of the power receiving part. When the connecting piece 27 is connected to the power receiving piece through the connecting pin 26, the supporting piece 23 also includes a first connecting hole 231 passing through the body 230; as mentioned above, one end of the extension spring 24 is fixed on the connecting piece 27, thus , one end of the extension spring 24 can be fixed on the support member 23, and can also be fixed on the middle member 22. In the embodiment of the present invention, one end of the extension spring 24 is fixed on the support member 23 as an example for illustration. At this time, the support The member 23 also includes a protruding portion 234 protruding outward from the body 23 , and one end of the extension spring 24 is fixed on the protruding portion 234 .

As shown in FIG. 3C , the intermediate piece 22 includes a base 221, a joint portion 222 extending outward from the upper surface 221a of the base, a first through hole 223 passing through the base 221, and a second through hole 224 passing through the joint portion 222, so The center line of the first through hole 223 intersects the center line of the second through hole 224, wherein the first through hole 223 is used to allow the first part 211 of the power receiving member to pass through, and the second through hole 224 is used to connect with the action rod 3 combination, therefore, the center line of the first through hole 223 is the rotation axis L2 of the power receiver; in the present invention, the base 221 is a cylindrical platform, and the joint part 222 is upward from a part of the circumferential direction of the upper surface 221a of the cylindrical platform. Extend outward, not the full circumference. As mentioned above, the lifting part 32 of the action rod 3 is combined with the connecting piece 27, specifically, the insertion block 321 of the lifting part 32 is inserted into the second through hole 224 (as shown in FIGS. 4A and 4B ).

As shown in FIG. 3D, the gear part 25 includes a cylindrical flange body 250, a flange cavity 251 surrounded by the flange body, a first receiving portion 253 and a second receiving portion 254 formed on the inner wall of the flange cavity. , a gear 255 provided at one end of the flange body 250 along the rotation axis L3, and an extension 252 extending from the flange body 250 to a direction away from the gear 255 along the rotation axis L3, and the gear 255 is used for the power transmission part The driving force transmitted by 233 is transmitted to other parts of the process box, and the extension 252 is used to fix the other end of the extension spring 24 (as shown in Figure 4A and Figure 4B); preferably, the first accommodating part 253 and the second The receiving portions 254 are grooves formed by ribs extending inward from the surface of the flange cavity 251 . After the power transmission device 2 is assembled, the reset member 24 is accommodated in the second accommodation portion 254, the power transmission portion 233 is accommodated in the first accommodation portion 253, and passes through the ribs around the first accommodation portion 253. Combined transmission drive.

As mentioned above, the lifting part 32 of the action rod is combined with the connecting part 27, and is used to control the movement of the connecting part 27 and then control the extension of the power receiving part 21, and the connecting part 27 includes the intermediate part 22 and the support part arranged separately 23. The power receiver passes through the middle piece 22 and enters into the support piece 23. When the middle piece 22 receives the force of the lifting part 32, it needs to transmit the force to the power receiver 21 through a transmission mechanism. In the present invention, the transmission mechanism is connected to the first part 211 of the power receiving part, and abuts against the upper surface 221a of the base of the intermediate part. Specifically, the transmission mechanism is a snap spring 28 fixed on the first part 211 of the power receiving part or A stepped portion extending outward from the surface of the first portion 211 of the power receiver.

As shown in Fig. 2, Fig. 4A and Fig. 4B, when the transmission mechanism is a circlip 28, in order to prevent the circlip 28 from falling off, the outer surface of the first part 211 of the power receiver is also provided with a bayonet groove 211b, and the circlip 28 is clamped on the bayonet slot 211b. When the power transmission device 2 is assembled and the action rod 3 is connected to the power transmission device, as shown in FIGS. The power receiving part 21 passes through the middle part 22 and enters the supporting part 23 , the connecting pin 26 passes through the supporting part 23 and the power receiving part 21 , one end of the reset part 24 is fixed on the supporting part 23 , and the other end is fixed on the extension part 252 .

As mentioned above, the action rod 3 is a lever that rotates around the rotating part. In order to ensure that the lifting part 32 generates a large enough force, as shown in FIG. 4B, the distance between the free end surface 31c of the force receiving part and the midpoint of the rotating part t1 and the distance t2 from the end surface of the insertion block 321 to the midpoint of the rotating part satisfy: t1>5t2, the above-mentioned t1 and t2 refer to the distance in the longitudinal direction of the action rod 3, and in FIG. distance.

Embodiment two

FIG. 5 is a schematic structural diagram of the connecting member 27 in this embodiment.

As shown in FIG. 5 , the difference between this embodiment and the above embodiments is that in this embodiment, the support member 23 and the intermediate member 22 are integrally formed, and the power receiving member 21 still enters the support member 23 through the intermediate member 22 , and The joint portion 222 in this embodiment is formed by extending outward from the entire circumference direction of the upper surface 221 a of the base, and an annular groove 225 for receiving the insertion block 321 is provided on the circumference direction of the joint portion 222 .

Since the middle piece 22 is integrally formed with the support piece 23, and the power receiving piece 21 is connected to the support piece 23 through the connecting pin 26, therefore, when the insertion block 321 applies a force to the middle piece 22, the force can pass through the middle piece 22 and the support piece 23. The support 23 is applied to the power receiver 21 so that the power receiver 21 protrudes.

[Extension and retraction of the power receiver]

Fig. 6A is a schematic diagram of a retracted state of the power receiver; Fig. 6B is a schematic diagram of an extended state of the power receiver.

In order to describe the working process of the power receiving member 21 and the action rod 3 more clearly, only the power transmission device 2 , the action rod 3 and the end cover 11 are shown in FIG. 6A and FIG. 6B .

As shown in Figure 6A, before the process box is installed into the equipment or has been loaded into the equipment but before the equipment cover is not closed, the power receiving member 21 is in a retracted state, because the tension spring 24 is pressed against the power receiving member 21 by the support member 23 Pulling force is applied so that the power receiving member 21 approaches the photosensitive cylinder along the direction d1 shown in the figure. As mentioned above, the insertion block 321 of the action rod 3 is connected with the intermediate member 22 through the second through hole 224 of the intermediate member, and the intermediate member 22 is in turn The active force is transmitted to the power receiving part 21 through the above-mentioned transmission mechanism, therefore, when the power receiving part 21 is subjected to the pulling force of the extension spring 24, the active force can be transmitted to the insertion of the action rod 3 through the transmission mechanism and the intermediate piece 22. On the block 321, specifically the top surface 224a of the second through hole 224 is in contact with the insertion block 321. At this time, the middle rod 30 of the action rod is not in contact with the guide groove 110, and the rotation axis L1 of the photosensitive element and the rotation axis of the power receiver L2 and the rotation axis L3 of the gear portion 25 are coaxial.

As shown in Figure 6B, when the process cartridge has been loaded into the device and the cover door is closed, the pressing surface 31a of the force receiving part 31 is first subjected to pressure from the cover door, so that the force receiving part 31 moves in the direction shown by d1 in Figure 6A , at the same time, the action rod 3 rotates around the rotating part as a whole, the intermediate rod 30 moves along the direction shown by d1 under the guidance of the guide groove 110, and the lifting part 32 moves along the direction shown by d2 in FIG. The contact of the top surface 224a of the second through hole, the insertion block 321 drives the middle piece 22 to move along the direction shown by d2, and through the transmission mechanism, the power receiving part 21 is pulled out along the direction shown by d2, and the extension spring 24 is continued Stretching; when the cover door is completely closed, the cover door abuts against the retaining surface 31b of the force-receiving part, and at the same time, the middle rod 30 reaches the bottom end of the guide groove 110, and the action rod 3 is always pressed by the cover door in the position shown in Fig. 6B At this time, the power receiving part 21 is also in the extended state and combined with the power output part inside the equipment. During the closing process of the cover door and when the power receiving part is extended and combined with the power output part to receive the driving force, The rotation axis L1 of the photosensitive element, the rotation axis L2 of the power receiver 21 , and the rotation axis L3 of the gear portion 25 are coaxial.

On the contrary, when the terminal user opens the door, the door is first out of contact with the supporting surface 31b, and the force receiving part 31 moves in the direction opposite to the direction shown by d1, that is, the direction shown by d2, and the door gradually contacts with the support surface 31b. The pressing surface 31a contacts, and the force receiving part 32 gradually rises. At the same time, the power receiving part 21 and the intermediate part 22 are disengaged from the power output part under the elastic force of the tension spring 24, and gradually move along the direction shown by d1. The contact between the top surface 224a of the two through holes and the insertion block 32 drives the lifting part 32 of the action rod to gradually move along the direction shown in d1. When the cover door is completely out of contact with the pressing surface 31a, the action rod 3 and the power receiver 21 return to From the initial state shown in FIG. 6A , it can be seen that the retraction process of the power receiving member 21 can be realized under the elastic force of the tension spring 24 . During the movement of the power receiver 21 from extension to retraction, the rotation axis L1 of the photosensitive element, the rotation axis L2 of the power receiver 21 and the rotation axis L3 of the gear portion 25 are coaxial.

[other instructions]

The inventor of the present invention has found in practice that since the extension spring 24 is in a stretched state for a long time, the tension of the extension spring 24 may be weakened after the process cartridge C has been used for a period of time, causing the extension spring to lose its function when the door is opened. The pulling force of 24 is not enough to disengage the power receiving member 21 from the power output member, so that the power receiving member 21 cannot return to the initial retracted state.

In order to ensure a more stable operation of the process box C, an auxiliary reset member may also be provided on the process box C. Preferably, the auxiliary reset member 14 is an elastic member. As shown in FIG. 6A , the auxiliary reset member 14 is disposed on the end cover 11 , specifically located in the guide groove 110 . When the equipment cover is closed, the action rod 3 contacts the auxiliary reset member 14 and compresses the auxiliary reset member 14 .

As mentioned above, the distance t1 from the free end surface 31c of the force receiving part to the midpoint of the rotating part and the distance t2 from the end surface of the insertion block 321 to the midpoint of the rotating part satisfy: t1>5t2, that is, the action rod 3 can actually be regarded as A force amplifying mechanism, or a labor-saving lever, when the force-receiving part 31 receives a small force, the lifting part 32 will feed back a relatively large force. When the equipment cover door is opened, if the pulling force of the extension spring 24 is insufficient, the insertion block 321 of the lifting part will abut against the bottom surface 224b of the second through hole under the restoring force of the auxiliary reset member 14, and the lifting part will 32 The larger active force fed back presses the middle piece 22 and moves along the direction shown by d1 together with the power receiving piece 21 and the support piece 23, so as to ensure that the power receiving piece can smoothly return to the initial retracted state. It can be seen that when When the tension of the extension spring 24 is insufficient, the retraction process of the power receiving member 21 is realized under the joint action of the extension spring 24 , the auxiliary reset member 14 and the action rod 3 .

Further, in order to prevent the intermediate member 22 from deflecting during the expansion and contraction of the power receiving member 21, in the embodiment of the present invention, the process cartridge C further includes a fixing part arranged therein, and the fixing part is used for fixing and supporting The middle piece 22 further fixes and supports the entire power transmission device 2 , ensuring that the middle piece 22 is always coaxial with the power receiving piece 21 . Preferably, the fixing part is a rib 121a arranged on the bracket 12, as shown in FIG. The rib 121a is downstream of the notch 120. When the process cartridge is assembled, the rib 121a is adjacent to the joint portion 222. More preferably, there are two ribs 121a, and there are two ribs 121a on the inner wall of the third through hole 124. Relatively arranged; Of course, the fixed part is not limited to the rib 121a provided on the bracket 12, but also can be a plurality of protrusions extending from the gear part 25 along its rotation axis L3 to the direction away from the photosensitive cylinder, and the intermediate piece 22 is It is clamped between the plurality of protrusions, so as to ensure that the intermediate piece 22 remains coaxial with the power receiving piece 21 all the time.

As mentioned above, the action lever 3 among the present invention is to swing in the plane including the process box longitudinal X and the transverse direction Y. The initial force of the action bar 3 comes from the equipment cover door. When the process box C needs to be taken out, only Open the cover door, and the power receiver 21 can return to the initial retracted state under the action of the extension spring 24 or the extension spring 24 and the auxiliary reset member 14 .

The power receiving member in the embodiment of the present invention is not equipped with a sphere, and its rotation axis is always coaxial with the rotation axis of the photosensitive cylinder, and the power receiving member and the gear part are integrated through the connecting piece. Therefore, when the process box or the photosensitive element is in transport During the process, the power receiver described in the present invention will not have the possibility of disengaging from the gear part, thereby effectively ensuring the overall stability of the power transmission device, and will not cause the end user to be unable to use the power transmission device due to failure. Disadvantages of the box.

Claims (10)

1. a kind of handle box, including handle box housing, the photo-sensitive cell that is rotatably installed in housing and for supporting photo-sensitive cell Support, the photo-sensitive cell include photosensitive cylinder and the power transmission installed in photosensitive one longitudinal end of cylinder, it is described Support includes being used to allow third through-hole, the first projection and the second projection positioned at third through-hole periphery that power transmission is passed through, Characterized in that,

The support also includes the breach being located between the first projection and the second projection, along the installation direction of handle box, the breach Positioned at the upstream of the first projection and the second projection.

2. a kind of handle box according to claim 1, it is characterised in that the handle box also includes being connected with power transmission Actuating rod, the actuating rod combined through breach with power transmission.

3. a kind of handle box according to claim 2, it is characterised in that the breach is the U-shaped portion with breach bottom surface.

4. a kind of handle box according to claim 3, it is characterised in that after actuating rod is combined with power transmission to be finished, Neutral portion is formed between the projection location of the actuating rod bottom surface and actuating rod on breach bottom surface.

5. a kind of handle box according to claim 3, it is characterised in that after actuating rod is combined with power transmission to be finished, The location of the projection of actuating rod bottom surface with actuating rod on breach bottom surface is not contacted.

6. a kind of handle box according to claim 2, it is characterised in that the breach is while has breach bottom surface and breach top The degree of lip-rounding portion in face.

7. a kind of handle box according to claim 6, it is characterised in that the actuating rod through breach top surface and breach bottom surface it Between space.

8. a kind of handle box according to claim 7, it is characterised in that after actuating rod is combined with power transmission to be finished, Neutral portion is formed between the projection location of the actuating rod bottom surface and actuating rod on breach bottom surface, meanwhile, actuating rod is also Neutral portion is also formed between projection location of the actuating rod on breach top surface.

9. the handle box described in any one claim in claim 4,5,8, it is characterised in that the handle box is also Including the fixed part being disposed therein, the fixed part is used for fixed support power transmission.

10. a kind of handle box according to claim 9, it is characterised in that the fixed part is inside along the inwall of third through-hole Prominent rib, along the installation direction of handle box, rib is located at the downstream of breach.