CN223007007U

CN223007007U - Jack structure and electrical connector

Info

Publication number: CN223007007U
Application number: CN202422118439.6U
Authority: CN
Inventors: 满延贵; 黄建朝
Original assignee: Shenzhen Connector Technology Co ltd
Current assignee: Shenzhen Connector Technology Co ltd
Priority date: 2024-08-30
Filing date: 2024-08-30
Publication date: 2025-06-20
Anticipated expiration: 2034-08-30

Abstract

The application relates to a jack structure and an electric connector, wherein the jack structure comprises a plug connector and a sleeve, the plug connector comprises a shaft part and claw parts, the claw parts are connected to the periphery of one end face of the shaft part, the claw parts are annularly arranged around the central axis of the shaft part, one end of each claw part far away from the shaft part is inwards turned towards the direction close to the central axis, the claw parts can be elastically opened and closed for clamping a contact pin, and the sleeve is sleeved with the shaft part and covers the claw parts to limit the opening range of the claw parts. In the jack structure, the sleeve covers the claw part, so that the sleeve can limit the opening range of the claw part, the opening angle of the claw part is limited, the probability of elastic fatigue caused by overlarge opening angle of the claw part is reduced, and the service life of the claw part is prolonged. The electric connector comprises the jack structure and has longer service life.

Description

Jack structure and electric connector

Technical Field

The present application relates to the field of electrical connection technologies, and in particular, to a jack structure and an electrical connector.

Background

An electrical connector is an electronic engineering device used to make electrical connections between devices, between apparatuses, and between electrical components. For current electrical connectors, one of the two-part construction of the counter insert includes a socket member and the other includes a pin. The jack component usually has certain elastic opening and closing capability, so that the contact pin and the jack component have stable contact relationship after being plugged.

However, in the current use process of repeated plugging and unplugging of the electrical connector, the jack member is prone to elastic fatigue and poor contact, so that the service life of the electrical connector is reduced, and the problem needs to be solved.

Disclosure of utility model

Accordingly, it is necessary to provide a jack structure and an electrical connector for solving the problem that the jack member is prone to elastic fatigue after repeated plugging and unplugging of the electrical connector.

The application provides a jack structure which comprises a plug connector and a sleeve, wherein the plug connector comprises a shaft part and claw parts, the claw parts are connected to the periphery of one end face of the shaft part, the claw parts are annularly arranged around the central axis of the shaft part, one end of each claw part far away from the shaft part is inwards turned towards the direction close to the central axis, the claw parts can be elastically opened and closed for clamping a contact pin, and the sleeve is sleeved with the shaft part and covers the claw parts to limit the opening range of the claw parts.

In one embodiment, the free end of the sleeve, which is far away from the shaft part, is provided with an inward flanging, one side of the inward flanging is connected with the end face of the sleeve, and the other side of the inward flanging is turned into the sleeve in an arc shape.

In one embodiment, the plurality of claw portions distributed in a ring form a plugging portion, the plugging portion is provided with a plugging cavity for plugging the pin, the inward flange is in a ring shape to form an introduction hole, the inward flange and the shaft portion are coaxially arranged, the inner diameter of the introduction hole gradually decreases in the direction of pointing to the shaft portion along the central axis, the minimum inner diameter of the introduction hole is d1, the minimum inner diameter of the plugging cavity is d2, the minimum outer diameter of the plugging portion is d3, and d2 is less than or equal to d1 and less than or equal to d3.

In one embodiment, the free end of the jaw portion remote from the shaft portion is provided with an introduction slope, the side of the introduction slope, which is closer to the shaft portion, is located radially inward relative to the side remote from the shaft portion, and along the central axis, a projection at the smallest inner diameter of the introduction hole is located at the introduction slope.

In one embodiment, an angle at which an end of the claw portion remote from the shaft portion turns inward toward a direction close to the central axis is α, wherein 0.5+≤3 °.

In one embodiment, the shaft portion includes a first section, a second section, and a step disposed between the first section and the second section, the first section has an outer diameter smaller than that of the second section, and the sleeve is sleeved on the first section and abuts against the step.

In one embodiment, the sleeve is coaxially disposed with the second section, and the sleeve has an outer diameter equal to the outer diameter of the second section.

In one embodiment, a wire hole is formed in one end, far away from the claw portion, of the shaft portion, the wire hole is used for allowing a wire to penetrate through, the hole wall of the wire hole is used for being fixedly connected with the wire, a communication hole is further formed in the shaft portion, and the communication hole is communicated with the outer portion of the shaft portion and the wire hole.

In one embodiment, the outer periphery of the shaft portion is provided with a fixing ring in a protruding manner, and the fixing ring is used for being fixedly installed with the fixing piece.

In another aspect, the present application also provides an electrical connector, which includes a fixing member and the jack structure as described above, wherein the jack structure is mounted on the fixing member.

In the jack structure, the sleeve covers the claw part, so that the sleeve can limit the opening range of the claw part, the opening angle of the claw part is limited, the probability of elastic fatigue caused by overlarge opening angle of the claw part is reduced, and the service life of the claw part is prolonged. Therefore, the sleeve is used for limiting the opening range of the claw part, so that the service life of the electric connector can be prolonged.

Drawings

Fig. 1 is an axial schematic view of a jack structure according to an embodiment of the present application.

Fig. 2 is a top view of the jack structure of fig. 1.

Fig. 3 is a cross-sectional view of the receptacle structure of fig. 2 taken along line A-A.

Fig. 4 is an exploded view of the jack structure of fig. 1.

Fig. 5 is a front view of the plug in the jack configuration of fig. 4.

Fig. 6 is an enlarged view of a portion of the plug connector of fig. 5 at B.

Reference numerals 10, a jack structure, 100, a plug connector, 110, a shaft part, 111, a first section, 112, a second section, 113, a step, 114, a wire hole, 115, a communication hole, 116, a fixed ring, 120, a claw part, 121, a lead-in inclined surface, 130, a plug part, 131, a plug cavity, 200, a sleeve, 210, an inner flanging, 220, a lead-in hole, O and a central axis.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, they may be fixedly connected, detachably connected or integrally formed, mechanically connected, electrically connected, directly connected or indirectly connected through an intermediate medium, and communicated between two elements or the interaction relationship between two elements unless clearly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

Referring to fig. 1 to 3, an embodiment of the present application provides a jack structure 10, where the jack structure 10 is configured to be plugged with a pin to achieve electrical conduction. The socket structure 10 includes a plug 100 and a sleeve 200, the plug 100 including a shaft portion 110 and a claw portion 120. The claw portions 120 are connected to the peripheral edge of one of the end surfaces of the shaft portion 110, the plurality of claw portions 120 are annularly arranged around the central axis O of the shaft portion 110, and one end of the claw portion 120 away from the shaft portion 110 is turned inward in a direction approaching the central axis O. The claw portion 120 is elastically openable and closable for holding a pin, in other words, a pin is inserted into an inner cavity (a plug-in cavity 131 to be mentioned later) defined by the claw portion 120.

In the jack structure 10, since the sleeve 200 covers the claw 120, the sleeve 200 can limit the opening range of the claw 120, so that the opening angle of the claw 120 is limited, the probability of elastic fatigue caused by overlarge opening angle of the claw 120 is reduced, and the service life of the claw 120 is prolonged. As can be seen from this, the sleeve 200 limits the opening range of the claw portion 120, and thus the service life of the electrical connector can be improved.

Meanwhile, the sleeve 200 covers the outer side of the claw 120 and can also provide protection for the claw 120, so that external knocks possibly received by the claw 120 are reduced. For example, during assembly of the jack structures 10, the occurrence of damage to the jaws 120 due to the collision of the jack structures 10 with one another can be reduced by the protective action provided by the sleeve 200 to the jaws 120.

It should be noted that, since the plurality of claw portions 120 are connected to the peripheral edge of the end face of the shaft portion 110, and the plurality of claw portions 120 are arranged in a ring shape, the plurality of claw portions 120 may be mutually matched and enclosed to form a plugging cavity 131, the plugging cavity 131 is used for inserting a pin, and after the pin is inserted, each claw portion 120 can press the pin from all positions in the circumferential direction so as to mutually match and clamp the fixed pin, thereby realizing stable electrical connection.

Referring to fig. 3, in one embodiment, a free end of the sleeve 200 remote from the shaft portion 110 is provided with an inner flange 210, one side of the inner flange 210 is connected to an end surface of the sleeve 200, and the other side is turned into the sleeve 200 in an arc shape. Since the inner flange 210 is turned inwardly from the end face of the sleeve 200, if there is some misalignment between the socket structure 10 and the pin when inserted, the pin can pass into the sleeve 200 along the arcuate outer surface of the inner flange 210 and be inserted into the insertion cavity 131. In short, the provision of the turned-in edge 210 in the shape of an arc can guide the insertion of the pin into the jack structure 10, improving the smoothness of the insertion.

Referring to fig. 2 and 3, in one embodiment, the plurality of claw portions 120 distributed in a ring form a plugging portion 130, and the plugging portion 130 has a plugging cavity 131 for plugging pins as described above. The inward flange 210 is annular to form an introduction hole 220, and the inward flange 210 is disposed coaxially with the shaft portion 110. The inner diameter of the introduction hole 220 gradually decreases in a direction directed toward the shaft portion 110 along the central axis O. The minimum inner diameter of the introduction hole 220 is d1, the minimum inner diameter of the insertion cavity 131 is d2, and the minimum outer diameter of the insertion portion 130 is d3, wherein d2≤d1≤d3.

Referring to fig. 2 and 3, in the first aspect, with d1≤d3, since the inner diameter of the introduction hole 220 gradually decreases in the direction along the central axis O toward the shaft portion 110, the place where the minimum inner diameter of the introduction hole 220 is located, that is, the place closest to the insertion portion 130. Therefore, when the minimum inner diameter of the insertion hole 220 is set to be smaller than or equal to the minimum inner diameter of the insertion portion 130, there is no radial gap between the inner wall of the insertion portion 130 and the inner wall of the minimum inner diameter of the insertion hole 220, so that the pin is not caught between the sleeve 200 and the claw portion 120 after being inserted into the insertion hole structure 10 along the insertion hole 220, thereby improving the smoothness of insertion. It can be understood that the outer wall of the plugging portion 130 is a cylindrical outer wall formed by fitting the outer walls of the plurality of claw portions 120, so that it is not contradictory that the plugging portion 130 has an outer diameter.

In the second aspect, d1≥d2, since the end of the claw portion 120 away from the shaft portion 110 is turned inwards and the socket cavity 131 of the socket portion 130 is formed by the claw portion 120, the minimum inner diameter of the socket cavity 131 is formed on the side of the socket cavity 131 away from the shaft portion 110, that is, on the side close to the inward flange 210. Since the pin is inserted into the insertion cavity 131 from the introduction hole 220, the inside diameter of the introduction hole 220 is larger than the minimum inside diameter of the insertion cavity 131, so that the pin can be effectively inserted. In contrast, if the inner diameter of the introduction hole 220 is smaller than the minimum inner diameter of the insertion cavity 131, the pin that can be inserted from the introduction hole 220, which is apparently difficult to elastically expand the jaws to be in stable contact engagement with the claw portion 120, generally has a smaller radial dimension than the introduction hole 220.

Of course, in other embodiments, the introduction hole 220 may be provided with elastic expansion property, and the inner diameter of the introduction hole 220 may not be particularly limited.

With continued reference to fig. 2 to 4, in one embodiment, the free end of the claw portion 120 away from the shaft portion 110 is provided with an introduction slope 121, and a side of the introduction slope 121 near the shaft portion 110 is located radially inward relative to a side of the introduction slope 121 away from the shaft portion 110. Along the central axis O, the projection at the smallest inner diameter of the introduction hole 220 is located at the introduction slope 121. So configured, the pin, after being inserted into the sleeve 200 along the lead-in hole 220, will also contact the lead-in ramp 121 to continue to be inserted into the socket 131 under the guiding action of the lead-in ramp 121. In other words, the insertion slope 121 continues to guide the insertion of the pin with the insertion hole 220, thereby improving the smoothness of insertion.

Referring to FIGS. 5 and 6, in one embodiment, the end of the jaw portion 120 distal from the shaft portion 110 is turned inward toward the central axis O by an angle α, where 0.5 α≤3. Since the sleeve 200 covers the claw portion 120, too small an inversion angle of the claw portion 120 may result in insufficient moving space of the claw portion 120. Too large an inversion angle of the jaw 120 may result in too large a range of motion of the jaw 120, rendering the sleeve 200 substantially useless. In the present embodiment, the inward turning angle of the claw portion 120 is limited, so that the clamping and limiting action of the claw portion 120 can be fully exerted when the movable angle of the claw portion 120 is limited.

Further, different varus sizes of the jaw 120 may also be selected according to different radial pin sizes. In other words, the jack structure 10 can be adapted to plug with different types of pins by controlling the varus angle of the claw 120.

Referring to fig. 2 and 3, in one embodiment, the jaw 120 may be curved to more fully contact and clamp the pin. It is understood that the insertion portion 130 formed by the plurality of claw portions 120 may have a cylindrical or circular tube shape.

Further, at least part of the structures of the adjacent claw portions 120 are hollow, so that each claw portion 120 has sufficient opening and closing movement space.

Referring to fig. 5, in one embodiment, the shaft 110 includes a first section 111, a second section 112, and a step 113, the step 113 being disposed between the first section 111 and the second section 112. The outer diameter of the first section 111 is smaller than that of the second section 112, and the sleeve 200 is sleeved on the first section 111 and is abutted against the step 113, so that positioning is realized, and the convenience of sleeve 200 installation is improved.

Further, the claw 120 may be provided at an end of the first section 111 remote from the second section 112.

Referring to fig. 1 and 4, in one embodiment, the sleeve 200 is disposed coaxially with the second section 112, and the outer diameter of the sleeve 200 is equal to the outer diameter of the second section 112. Thus, the outer circumferential surface of the sleeve 200 and the outer circumferential surface of the second section 112 may be located on the same cylindrical surface, so that the overall appearance of the jack structure 10 is more regular, and the installation is convenient.

Referring to fig. 5, in one embodiment, a wire hole 114 is formed at an end of the shaft 110 away from the claw 120, the wire hole 114 is used for threading a wire, and a hole wall of the wire hole 114 is used for being fixedly connected with the wire. The shaft portion 110 is also provided with a communication hole 115, and the communication hole 115 communicates the wire hole 114 with the outside of the shaft portion 110. It will be appreciated that the jack structure 10 has one end for plugging with a pin and the other end for connecting with a wire, so that the pin is electrically connected with the wire. The jack structure 10 is easy to heat when being matched with wires in use. In this embodiment, by providing the communication hole 115, heat in the wire hole 114 can be conducted out, and the probability of occurrence of a failure in which the wire or the jack structure 10 is damaged or both fall off due to heat being blocked in the wire hole 114 can be reduced.

Further, the wire hole 114 may be recessed along the central axis O in the shaft portion 110. The communication hole 115 and the wire hole 114 are both formed in the second section 112. The walls of the wire holes 114 may be secured to the wire by crimping. In short, after the wire is inserted into the wire hole 114, the shaft portion 110 may be pressed from the outside, so that the inner wall of the wire hole 114 is tightened to be fixed with the wire hole 114.

Referring to fig. 4 and 5, in one embodiment, the outer periphery of the shaft 110 is provided with a fixing ring 116 in a protruding manner, and the fixing ring 116 is used for fixing with a fixing member (for example, an insulator, which will be described later). It will be appreciated that the jack structure 10 may generally be mounted and secured in an insulator, and thus the retaining ring 116 may be attached and secured to the insulator alone, or the retaining ring 116 may be mated with other components to be secured to the insulator. For example, the securing ring 116 may be an interference fit with the insulator to effect securement. Or the insulator may cooperate with the locking element to secure the retaining ring 116.

An embodiment of the present application further provides an electrical connector, where the electrical connector includes a fixing member and the jack structure 10 according to each embodiment, and the jack structure 10 is mounted on the fixing member.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims

1. A jack structure, characterized in that the jack structure comprises:

A plug connector, the plug connector comprising a shaft portion and a claw portion, the claw portion being connected to the periphery of one end surface of the shaft portion, a plurality of the claw portions being arranged in a ring around the central axis of the shaft portion, and the claw portion being turned inwardly toward the central axis at one end away from the shaft portion, and the claw portion being elastically openable and closable for clamping a pin;

A sleeve is sleeved with the shaft portion and covers the outside of the claw portion to limit the opening range of the claw portion.

2. The socket structure according to claim 1 is characterized in that the free end of the sleeve away from the shaft portion is provided with an inner flange, one side of the inner flange is connected to the end surface of the sleeve, and the other side is folded into the sleeve in an arc shape.

3. The socket structure according to claim 2, characterized in that the plurality of claws distributed in an annular manner form an inserting portion, the inserting portion has an inserting cavity for the inserting pin to be inserted, the inner flange is annular to form an introduction hole, and the inner flange is coaxially arranged with the shaft portion;

In the direction along the central axis pointing to the shaft portion, the inner diameter of the introduction hole gradually decreases, the minimum inner diameter of the introduction hole is d1, the minimum inner diameter of the plug-in cavity is d2, and the minimum outer diameter of the plug-in portion is d3, wherein d2≤d1≤d3.

4. The socket structure according to claim 3 is characterized in that a free end of the claw portion away from the shaft portion is provided with an introduction bevel, and a side of the introduction bevel close to the shaft portion is located radially inner than a side away from the shaft portion; along the center axis, a projection of the minimum inner diameter of the introduction hole is located on the introduction bevel.

5 . The socket structure according to claim 1 , wherein an angle of inward turning of one end of the claw away from the shaft toward the central axis is α, wherein 0.5°≤α≤3°.

6. The socket structure according to claim 1 is characterized in that the shaft portion includes a first section, a second section and a step arranged between the first section and the second section, the outer diameter of the first section is smaller than that of the second section, and the sleeve is sleeved on the first section and abuts against the step.

7. The jack structure according to claim 6, characterized in that the sleeve is coaxially arranged with the second section, and the outer diameter of the sleeve is equal to the outer diameter of the second section.

8. The jack structure according to claim 1 is characterized in that a wire hole is provided at one end of the shaft portion away from the claw portion, the wire hole is for the wire to pass through, the hole wall of the wire hole is used to be fixedly connected to the wire, and the shaft portion is also provided with a connecting hole, the connecting hole connects the wire hole and the outside of the shaft portion.

9. The socket structure according to claim 1, characterized in that a fixing ring is protruded from the outer periphery of the shaft portion, and the fixing ring is used for installation and fixation with a fixing member.

10. An electrical connector, characterized in that the electrical connector comprises a fixing member and a socket structure according to any one of claims 1 to 9, wherein the socket structure is mounted on the fixing member.