CN101837695B - Safe and labor-saving stapler - Google Patents

Abstract

A safe labor-saving stapler comprises a handle, a base and a middle body, wherein the rear end of the handle is hinged to the middle body, and the handle and the middle body are hinged to the rear end of the base together; the front end of the interior of the middle body is provided with a nail pressing sheet, the inner side of the nail pressing sheet is provided with a resettable lever structure, one end of the lever mechanism is arranged in the shell of the handle, and the other end of the lever mechanism is connected with the nail pressing sheet; and a release mechanism capable of locking or releasing the nail pressing sheet is also arranged on the outer side of the nail pressing sheet. The invention has the advantages of simple operation, good safety, time and labor saving, high working efficiency and capability of achieving a relatively ideal stapling effect.

Description

A safe and labor-saving stapler

technical field

The invention relates to an office product, in particular to a stapler.

Background technique

Existing stapler has the following defects: (1) generally all is to utilize the force that presses down by hand to directly act on the staple to achieve the purpose of staple through the staple sheet. Therefore, the thickness of the paper and personal factors affect the staple. The binding effect is greatly affected, and it often needs to be pressed several times to staple, the work efficiency is low, and sometimes the paper may be damaged; (2) When the nail plate of the existing stapler is pulled apart, the handle can also be pressed Staples are dangerous in operation.

Contents of the invention

The purpose of the present invention is to provide a safe and labor-saving stapler, which is easy to operate, high in safety, time-saving and labor-saving, high in work efficiency, and can achieve a relatively ideal staple effect.

The technical solution of the present invention is: a safe and labor-saving stapler, including a handle, a base and a middle body, the rear end of the handle is hinged on the middle body, and the handle is connected to the middle body The body is jointly hinged at the rear end of the base; the inner front end of the middle body is provided with a nail pressing piece, and the inside of the nail pressing piece is provided with a resettable lever structure, and one end of the lever mechanism is arranged on the In the shell of the handle, the other end is connected with the nail pressing piece; the outer side of the nail pressing piece is also provided with a release mechanism that can lock or release the nail pressing piece.

The present invention can be improved as follows, the lever mechanism includes a seesaw and a torsion spring, both of which are rotatably mounted on the fixed shaft provided in the middle body, and the rear end of the torsion spring is fixed on In the middle part of the body, the front end extends into the through hole provided by the nail pressing piece to allow the end of the torsion spring to move up and down; the rear end of the seesaw is arranged in the shell of the handle, and the front end extends Insert it into the upper locking hole provided on the nail pressing sheet.

The seesaw is provided with a mounting hole adapted to the fixed shaft, and the mounting hole is a special-shaped hole that allows the seesaw to move back and forth relative to the fixed shaft.

The lever mechanism of the present invention also includes a compression return spring, one end of the compression return spring is fixed on the inner wall of the middle body, and the other end is fixed on the positioning protrusion provided on the seesaw, The positioning protrusion is located between the fixed shaft and the nail pressing piece.

The present invention can also be improved as follows, the release mechanism includes a hook and a release button, the hook is in an inverted "L" shape, and is rotatably installed in the middle body through the upper transverse short side , one of the side walls of the lateral short side of the hook is stepped, that is, a matching boss is provided on the side wall, and correspondingly, the upper part of the release button is provided with a It is equipped with a card slot that can drive the matching boss to move up and down; and, the bottom end of the release button protrudes from the bottom of the middle body; the hook is adjacent to the nail pressing piece, The protruding end of the vertical long side of the inverted "L"-shaped hook is also provided with a safety hook, and the safety hook extends into the lower locking hole provided on the nail pressing plate.

The present invention can also be further improved as follows, the release button is an elastic member, specifically, an elastic piece is provided under the slot on the release button, and correspondingly, the inner wall of the middle body is provided with the The clamping groove that the elastic piece matches.

The inverted "L"-shaped hook of the present invention has a folded line on its transverse short side, specifically the protruding end of the transverse short side is bent towards the side of the nail pressing piece, that is, the protruding end and the The safety hook is located on the same side of the hook, and the matching boss is located on the other side of the hook, and fits with the slot of the release button; the release button The card slot on the top is arranged horizontally, and its notch faces the vertical long side of the hook.

The present invention can also be improved as follows: the base is also provided with a nail-removing shrapnel, and the nail-removing shrapnel is provided with a protruding end protruding toward the direction of the nail pressing piece, and the protruding end is connected to the middle part The bottom of the body is in contact.

The nail-removing shrapnel of the present invention includes a horizontal bottom plate and an inclined shrapnel, the nail-taking shrapnel is fixed on the base, one end of the inclined shrapnel is fixed on the horizontal bottom plate, and the other end is along the The horizontal bottom plate is inclined upward and protrudes toward the nail pressing piece, and the extended end is in contact with the bottom of the middle body; one end of the horizontal bottom plate is fixed in the base, and the other end extends out of the base.

The front end of the base is provided with a nail plate, and the nail plate is provided with a hole matching the bottom of the release button.

The beneficial effects of the present invention are:

(1) In the safe and labor-saving stapler of the present invention, the movement of the nail pressing sheet is controlled by the hook of the release mechanism. Only when the paper is put in and the operation is started, the safety hook can be released and the handle can press the seesaw. On the contrary, When the handle is pressed down without paper, the release button will not retract to the middle body. Therefore, the hook will not withdraw from the nail pressing piece, thus effectively preventing the action of the nail pressing piece, and the nail will not be ejected, thereby avoiding the high-speed nail ejection. danger, greatly improving the safety performance of the product.

(2) In the safe and labor-saving stapler of the present invention, the point of pressing down on the handle and the pressure point of the seesaw are labor-saving due to leverage, and the seesaw drives the nail pressing piece to move in unison, and the torsion spring is automatically released after moving upward to a certain height. Drive the nail presser to impact the staples at high speed to achieve the goal of labor-saving staples again; and because the impact force is fixed, within a certain paper thickness and human factors will not affect the effect of staples, thus greatly improving the effect of staples , complete the staple action at one time, which improves the work efficiency.

Description of drawings

Fig. 1 is the exploded schematic diagram of the embodiment of the present invention;

Fig. 2 is a partial schematic view of the initial state after removing a side cover of the embodiment of the present invention;

Fig. 3 is a schematic diagram of an instant release state after removing a side cover according to an embodiment of the present invention;

Fig. 4 is a schematic diagram of the embodiment of the present invention when the seesaw is reset to the top of the nail pressing plate and the hook is reset after removing a side cover;

Fig. 5 is a schematic diagram of an abnormal working state after removing a side cover of the embodiment of the present invention;

FIG. 6 is an exploded and enlarged schematic diagram of the hook and the release button according to the embodiment of the present invention.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing.

A specific embodiment of a safe and labor-saving stapler of the present invention is shown in Figures 1 to 5, which includes a handle 17, a base 11 and a middle body, the rear end of the handle 17 is hinged on the middle body, and the handle 17 It is jointly hinged with the middle body on the rear end of the base 11; the inner front end of the middle body is provided with a nail pressing piece 3, and the inner side of the nail pressing piece 3 is provided with a resettable lever structure. One end of the lever mechanism is arranged in the shell of the handle 17, and One end is connected with the nail pressing sheet 3; the outer side of the nail pressing sheet 3 is also provided with a release mechanism that can lock or release the nail pressing sheet 3.

In this embodiment, the lever mechanism includes a seesaw 4 and a torsion spring 1, both of which can be rotatably mounted on the fixed shaft 5 provided in the middle body, the rear end of the torsion spring 1 is fixed in the middle body, and the front end extends into the middle body. Nail pressing sheet 3 is provided with in the through hole that can make the end of torsion spring 1 move up and down; the rear end of seesaw 4 is arranged in the shell of handle 17, and contacts with the inner wall of handle 17, and the front end stretches into the nail pressing sheet 3 in the upper locking hole 31. Moreover, the front end of the seesaw 4 is provided with an inclined surface, and correspondingly, the top of the nail pressing piece 3 is also provided with an inclined surface. During normal state, the slope on the seesaw 4 is in contact with the bottom of the upper locking hole 31 . The seesaw 4 is provided with a mounting hole 41 adapted to the fixed rotating shaft 5 , and the mounting hole 41 is a special-shaped hole that enables the seesaw to move back and forth relative to the fixed rotating shaft 5 . The top of the inner wall of the special-shaped hole is provided with a convex portion 411 protruding into the hole. This convex portion 411 can prevent the seesaw 4 from moving back and forth when the handle 17 is pressed down, that is, to ensure that the seesaw 4 will not be released in advance. The fixed rotating shaft 5 is a semi-shaft structure, which is fixedly installed on the inner wall of the middle body.

The lever mechanism also includes a compression return spring 2. The upper end of the compression return spring 2 is fixed on the inner wall of the middle body, and the lower end is fixed on the upwardly protruding positioning projection 42 provided on the seesaw 4. The positioning projection 42 is located at Between the fixed rotating shaft 5 and the nail pressing sheet 3.

In this embodiment, the release mechanism includes a hook 10 and a release button 9. The hook 10 is in an inverted "L" shape and is rotatably installed in the middle body through the upper transverse short side 101. The movable mounting grooves matched with the protruding ends of the short sides 101 enable the hook 10 to rotate on the longitudinal plane with the protruding ends as the center point. One of the side walls of the lateral short side 101 of the hook 10 is stepped, that is, a matching boss 103 is provided on the side wall, and correspondingly, the upper part of the release button 9 is provided with a matching boss 103. And can drive the draw-in groove 91 that this cooperating boss 103 moves up and down, cooperates between the boss 103 and the draw-in groove 91 for movable cooperation, when release button 9 drives catch 10 to move up and down, the moving range of grab 10 is limited by the middle body The movable installation groove inside and the dual limitation of the card slot 91 on the release button 9; and, the bottom end of the release button 9 protrudes outside the bottom of the middle body, and the bottom end of the release button 9 is also provided with a limit block 93; the hook 10 is adjacent to the nail pressing sheet 3, and the protruding end of the vertical long side of the inverted "L" shaped hook 10 is also provided with a safety hook 102, and the safety hook 102 extends into the lower locking hole provided on the nail pressing sheet 3 within 32.

The release button 9 is an elastic member. Specifically, an elastic piece 92 is provided below the locking groove 91 on the release button 9 . Correspondingly, a locking groove 19 matching the elastic piece 92 is provided on the inner wall of the middle body. The transverse short side 101 of the inverted "L" shaped grab 10 is in the shape of a broken line, specifically the extended end of the transverse short side 101 bends to the side of the nail pressing piece (3), that is, the extended end and the safety hook 102 are located The same side on the hook 10, and the mating boss 103 is located on the other side of the hook 10, and fits with the slot 91 of the release button 9; the slot 91 on the release button 9 is arranged laterally, as " U"-shaped groove, and its notch faces the vertical long side of the hook 10. The notch of the slot 91 extends to the corner near the inverted "L"-shaped hook 10, and the corner between the short lateral side 101 of the hook 10 and its vertical long side is arc-shaped, so that the hook 10 is Move more smoothly.

The base 11 is also provided with a nail-taking shrapnel 8, and the nail-taking shrapnel 8 is provided with a protruding end protruding toward the nail pressing piece 3, and the protruding end is in contact with the bottom of the middle body. The nail-taking shrapnel 8 includes a horizontal bottom plate 81 and an inclined shrapnel 82, the nail-taking shrapnel 8 is fixed on the base 11, one end of the inclined shrapnel 82 is fixed on the horizontal bottom plate 81, and the other end is inclined upward along the horizontal bottom plate 81 and toward the nail-pressing sheet. 3 directions protrude, and this protruding end end contacts with the middle body bottom; Down.

The front end of the base 11 is provided with a nail plate 16 , and the nail plate 16 is provided with a clamping hole 161 matching the bottom of the release button 9 . The middle body is formed by butt joints of two side covers 6,7, and the rear ends of the handle 17 are respectively hinged to the rear ends of the two side covers 6,7. The base 11 is also provided with a nail pushing frame 12, a nail pushing frame buckle 14 and a nail pushing plate 13, the nail pushing plate 13 is connected with the nail pushing frame 12 through a tension spring 15, and the nail pushing frame 12 is fixed on the base through a nail pushing frame buckle 14 11 on.

The working principle of the present invention is as follows:

In the initial state, the hook 10 is rotatably installed in the side cover 6 through its lateral short side 101, and the up and down direction of the side cover 6 is pressed by the side cover 7, and the matching boss 103 on the hook 10 and the release button 9 The card slot 91 on the top matches, and the safety hook 102 extends into the lower locking hole 32 of the nail pressing piece 3 . The elastic sheet 92 on the release button 9 is inserted into the clamping groove 19 on the inner wall of the side cover 6, and the bottom of the release button 9 protrudes out of the bottom of the middle body; the rear end of the seesaw 4 is higher than the front end, see FIG. 2 .

When preparing for work, first put the paper 18 between the base 11 and the middle body, and then apply force to the front end of the handle 17. Due to the elastic force, the middle body presses the top of the inclined shrapnel 82 on the nail picking shrapnel 8, and with the handle 17 moves towards the paper 18 together, when the bottom of the release button 9 touches the paper 18, it is compressed back into the middle body due to the reaction force of the paper 18, and is limited by the stopper 93, when the bottom of the release button 9 While protruding into the middle body, the mating boss 103 on the hook 10 is pushed to move upward and rightward by the slot 91 of the release button 9, that is, the hook 10 uses the protruding end of its transverse short side 101 as the central fulcrum. Counterclockwise circular movement, similarly, safety hook 102 is also followed by counterclockwise circular movement, therefore, safety hook 102 slowly withdraws from the locking hole 32 below the nail pressing piece 3, releases safety; handle 17 begins to press The movable seesaw 4 is arranged at one end of the handle 17 shell, and then one end of the seesaw 4 protruding into the nail pressing piece 3 makes an upward circular motion around the fixed rotating shaft 5, and pulls the nail pressing piece 3 to drive the torsion spring 1 to move upward, Simultaneously, the compression return spring 2 is compressed, and after reaching a certain height, one end of the seesaw 4 that is used to extend into the nail pressing piece 3 is automatically withdrawn from the upper locking hole 31 of the nail pressing piece 3 because of circular motion with the fixed rotating shaft 5 , At this time, the torsion spring 1 presses the nail pressing piece 3 to fall back instantly and quickly impacts the staple. After the staple passes through the paper 18, it collides with the nail plate 16 to complete the nailing operation. At this time, the torsion spring 1 and the nail pressing piece 3 reset , see Figure 3.

After finishing the staple action, let go of the handle 17, and the middle body will move upwards under the restoring elastic force of the staple-taking shrapnel 8. At this time, the release button 9 leaves the paper, and the bottom of the pressed release button 9 protrudes downwards out of the middle body due to its own elastic force. , and push the hook 10 to rotate clockwise at the same time, the safety hook 102 resets to the lower locking hole 32 on the nail pressing plate 3, until the safety hook 102 extends into the lower locking hole 32, the hook 10 is completely reset, see Figure 4 ; At this time, the compression return spring 2 pushes the positioning projection 42 of the seesaw 4 to move downward, and the end of the seesaw 4 located in the shell of the handle 17 makes an upward circular motion with the fixed rotating shaft 5 as the center of the circle, thereby pushing the handle 17 Reset upward; when the slope provided at the front end of the seesaw 4 collided with the top slope of the nail pressing piece 3, due to the downward component force and the backward component force generated by the nail pressing piece 3 slope, the seesaw 4 simultaneously Move back until the front end of the seesaw 4 leaves the vertical area where the nail pressing piece 3 is located. When the front end of the seesaw 4 moves to the vacancy of the upper locking hole 31 of the nail pressing piece 3, it is pressed by the force of the return spring 2 and becomes warped. Plate 4 stretches forward in the upper locking hole 31 again, and reset is completed at this moment.

When not working normally, press down on the front end of the handle 17, because the torsion spring 1 presses the nail pressing piece 3, the middle body presses the nail-removing shrapnel 8, and moves toward the nail plate 16 together with the handle 17, and the middle body reaches the buckle The nail plate 16, the bottom of the release button 9 enters the clamping hole 161 of the nail plate 16, that is, the release button 9 is not pressed into the middle body at this time, and the hook 10 is held by the release button 9 and cannot move, so the safety hook 102 Before exiting the lower locking hole 32 of the nail pressing piece 3, the nail pressing piece 3 is stuck and cannot move upward, so the seesaw 4 cannot pull the nail pressing piece 3, and the front end of the seesaw 4 is forced to be fixed. Correspondingly, the back of the seesaw 4 end also can not move, and handle 17 is prevented from moving downward because of rocker 4 rear end can't move, nail press plate 3 can't be pulled up and released, therefore, can not have staple to beat out, very safe, see Fig. 5 .

The above-mentioned embodiments are only preferred embodiments of the present invention, and cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope of the present invention.

Claims (10)

1. safety labor-saving stapler; Comprise handle (17), base (11) and middle part body; The rear end that it is characterized in that said handle (17) is articulated on the body of described middle part, and described handle (17) is articulated in described base (11) rear end jointly with described middle part body; The interior forward end of said middle part body is provided with presses nail sheet (3), and described pressure nail sheet (3) inboard is provided with reducible lever construction, and an end of described leverage is located in the shell of said handle (17), and the other end links to each other with described pressure nail sheet (3); The outside of described pressure nail sheet (3) also is provided with lockable or discharges the relieving mechanism of said pressure nail sheet (3).

2. a kind of safety labor-saving stapler according to claim 1; It is characterized in that described leverage comprises seesaw (4) and torsionspring (1); The two all is rotatably mounted on the fixed rotating shaft (5) that is provided with in the body of described middle part; The rear end of described torsionspring (1) is fixed in the body of described middle part, and front end stretches in the up and down through hole in made torsionspring (1) end that said pressure nail sheet (3) is provided with; The rear end of described seesaw (4) is located in the shell of said handle (17), and front end stretches in the top lock hole (31) that said pressure nail sheet (3) is provided with.

3. a kind of safety labor-saving stapler according to claim 2 is characterized in that described seesaw (4) is provided with and is used for the installing hole (41) that said seesaw (4) with respect to said fixed rotating shaft (5) moved forward and backward suitable with said fixed rotating shaft (5).

4. a kind of safety labor-saving stapler according to claim 3; It is characterized in that described leverage also comprises compression retracteding position spring (2); One end of described compression retracteding position spring (2) is fixed on the inwall of said middle part body; The other end is fixed on the locating convex block (42) that said seesaw (4) is provided with, and described locating convex block (42) is positioned at described fixed rotating shaft (5) and presses between the nail sheet (3).

5. according to any described a kind of safety labor-saving stapler in the claim 1 to 4; It is characterized in that described relieving mechanism comprises grab (10) and button release (9); Described grab (10) is inverted "L" shaped; Its horizontal minor face (101) through the top is rotatably mounted in the body of described middle part; That accept mutually with the vertical long limit of below grab (10) and adjacent with button release (a 9) the side sidewall horizontal minor face (101) of said grab (10) is provided with and cooperates boss (103), and correspondingly, described button release (9) top is provided with and can cooperates boss (103) suitable and can drive the draw-in groove (91) that this cooperation boss (103) moves up and down with this; And stretch out outside the bottom of said middle part body the bottom of described button release (9); Described grab (10) is adjacent with described pressure nail sheet (3), and the below of described inverted "L" shaped grab (10) the vertically external part on long limit also is provided with a safety door hook (102), and this safety door hook (102) stretches in the below lock hole (32) that said pressure nail sheet (3) is provided with.

6. a kind of safety labor-saving stapler according to claim 5; It is characterized in that draw-in groove (91) below on the described button release (9) is provided with a flexure strip (92); Correspondingly, the inwall of said middle part body is provided with the clamping slot (19) suitable with this flexure strip (92).

7. a kind of safety labor-saving stapler according to claim 6; The external part that it is characterized in that the horizontal minor face (101) of described inverted "L" shaped grab (10) bends towards said pressure nail sheet (3) one sides; Make the end and the described safety door hook (102) of said external part be positioned at the same side on the said grab (10); And described cooperation boss (103) is positioned at the opposite side on the said grab (10), and suitable with the draw-in groove (91) of said button release (9); Draw-in groove (91) horizontally set on the described button release (9), and its notch is towards the vertical long limit of said grab (10).

8. a kind of safety labor-saving stapler according to claim 7; It is characterized in that also being provided with on the described base (11) and get langrage sheet (8); The described langrage sheet (8) of getting is provided with one to external part, this external part and the described middle part body pig of pressing nail sheet (3) direction to stretch out.

9. a kind of safety labor-saving stapler according to claim 8; It is characterized in that the described langrage sheet (8) of getting comprises a horizonal base plate (81) and an inclination shell fragment (82); The described langrage sheet (8) of getting is fixed on the described base (11); One end of described inclination shell fragment (82) is fixed on the described horizonal base plate (81), and the other end is tilted to and follows closely sheet (3) direction to described pressure and stretch out this external part end and described middle part body pig along described horizonal base plate (81); One end of described horizonal base plate (81) is fixed in the described base (11), outside the other end protuberate basic unit (11).

10. a kind of safety labor-saving stapler according to claim 1 is characterized in that the front end of said base (11) is provided with pintle plate (16), and described pintle plate (16) is provided with and the suitable hole clipping (161) in said button release (9) bottom.

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