Contact pin, male end structure and connector

Abstract

The utility model relates to a contact pin, a male end structure and a connector, the contact pin is used for being plugged with a jack member and electrically conducted, the contact pin comprises a fixed section and a plug-in section, the plug-in section is connected to the end portion of the fixed section, the plug-in section comprises elastic arms, at least two elastic arms are oppositely arranged at intervals, each elastic arm comprises a contact surface located at the peripheral side, and the contact surface is located at the outer peripheral side. The contact surface is in a convex arc shape in the axial direction of the contact pin; when the contact pin and the jack member are axially inserted, each contact surface is abutted by the jack member, so that each elastic arm deforms inwards. The elastic arm deforms and stores elastic potential energy, so that the elastic arm can always be in stable contact with the jack piece of the external plug bush even in the environment with external interference such as vibration, and the contact conduction mode of the contact pin has relatively strong anti-interference capability. The male end structure and the connector comprise the contact pin, and are stable in contact and strong in anti-interference capability during plugging.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of connector, in particular to a contact pin, a male structure and a connector. BACKGROUND

[0002] The electric connector is a kind of connecting element commonly used in electromechanical equipment, and the electric connector can connect two electrical components to transmit current or signal. The current electric connector usually includes a male end and a female end, and the communication effect of the electric connector is mainly realized by the contact between the conductive terminal in the male end and the conductive terminal in the female end.

[0003] However, the contact mode of the two conductive terminals in the current electric connector has poor anti-interference performance, and although it can meet the static conduction requirement, it is easy to separate and disconnect in a dynamic vibration environment, which needs to be improved. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide a contact pin, a male structure and a connector to solve the problem of poor anti-interference performance of the terminal contact mode in the current electric connector.

[0005] The first aspect of the present application provides a contact pin, which is used for plugging with a socket and electrically conducting, and includes a fixed segment and a plugging segment. The plugging segment is connected to the end of the fixed segment, and the plugging segment includes elastic arms. At least two elastic arms are arranged oppositely and spaced apart. The elastic arm includes a contact surface located on the outer circumferential side, and the contact surface is in an outward convex arc shape in the axial direction of the contact pin. When the contact pin is axially plugged with the socket, each elastic arm is deformed inwardly by the abutment of the socket.

[0006] In one embodiment, one end of each elastic arm near the fixed segment is bent inwardly to form a throat portion. When the contact pin is axially plugged with the socket, the areas of each elastic arm for forming the throat portion are close to or abut each other.

[0007] In one embodiment, one end of each elastic arm away from the fixed segment is bent inwardly to form a beak portion. When the contact pin is axially plugged with the socket, the areas of each elastic arm for forming the beak portion are close to or abut each other.

[0008] In one embodiment, the elastic arm includes an avoidance surface located on the inner circumferential side, and the avoidance surface is recessed towards the side close to the contact surface.

[0009] In one embodiment, the contact pin further includes a guide segment. The fixed segment is used for fixed connection with an insulator, the guide segment is connected between the plugging segment and the fixed segment, and the outer diameter of the guide segment is smaller than the outer diameter of the fixed segment.

[0010] In one of the embodiments, a glue groove is formed on the outer periphery of the fixing section away from the one end of the mating section, and the glue groove is used to accommodate glue.

[0011] In one of the embodiments, the contact pin is formed by stamping a plate material.

[0012] The second aspect of the present application provides a male structure, which comprises an insulator and the contact pin as described above, and the insulator is provided with a mounting hole, and the contact pin is arranged in the mounting hole.

[0013] In one of the embodiments, a glue filling cavity is formed on the end surface of the insulator away from the one end of the mating section, and the glue filling cavity is used to accommodate glue, and one end of the contact pin is used to extend to the outside of the insulator through the glue filling cavity.

[0014] The third aspect of the present application further provides a connector, which comprises a female structure and the male structure as described above, and the female structure comprises a socket member, and the socket member is inserted with the contact pin.

[0015] In the above contact pin, the contact surface of the elastic arm is outwardly convex in the axial direction of the contact pin, so that when the contact pin is axially inserted with the socket member, the socket member can gradually press and fold the elastic arm along the contact surface of each elastic arm, so that the region with the largest convex amplitude in the contact surface in the direction perpendicular to the axial direction is deformed inwardly. Thus, the elastic arm is deformed and stores elastic potential energy, so that even in an environment with external interference such as vibration, the elastic arm can always stably contact the socket member of the external socket sleeve, and therefore the contact and conduction mode of the contact pin has strong anti-interference ability. Further, compared with the traditional technology of adding elastic elements (such as crown springs) in the socket member, the elastic arm in the present application can be deformed, i.e., the contact pin itself can be deformed to improve the stability and anti-interference ability of the contact and conduction, and independent elements such as crown springs can be omitted, which is convenient for manufacturing and assembly. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The front view of the male structure provided by one of the embodiments of the present application.

[0017] Figure 2 The cross-sectional view of the male structure shown in FIG. 4 along the line A-A. Figure 1

[0018] Figure 3 The axonometric view of the contact pin in the male structure shown in FIG. 5. Figure 1

[0019] Figure 4 The axonometric view of the contact pin in the male structure shown in FIG. 5. Figure 3 ​​The side view of the contact pin and the female connector provided by the embodiment of the present application.

[0020] Figure 5 The side view of the contact pin provided by the embodiment of the present application. Figure 4 The cross-sectional view of the contact pin and the female connector along the line B-B.

[0021] Figure 6 The side view of the contact pin provided by the embodiment of the present application. Figure 3 The side view of the contact pin provided by the embodiment of the present application.

[0022] Figure 7 The isometric view of the connector provided by the embodiment of the present application.

[0023] Figure 8 The isometric view of the connector provided by the embodiment of the present application. Figure 7 The exploded view of the connector provided by the embodiment of the present application.

[0024] Reference signs: 10, connector; 20, male structure; 21, contact pin; 22, insulator; 23, mounting hole; 24, glue filling cavity; 25, first section; 26, second section; 27, first positioning surface; 30, female structure; 31, female connector; 32, insulating sleeve; 33, mating hole; 34, second positioning surface; 40, glue plate; 100, fixed section; 110, glue accommodating groove; 200, mating section; 210, elastic arm; 211, contact surface; 212, abutting portion; 213, leading end; 214, avoiding surface; 220, throat portion; 230, beak portion; 300, guide section; O, axial direction. DETAILED DESCRIPTION

[0025] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below. In the following description, a large number of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0026] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0027] In addition, the terms "first", "second", and the like, if any, are used herein for descriptive purposes only and should not be construed as indicating or implying relative importance or identifying the number of the indicated technical features. Thus, a feature defined with "first" or "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0028] In the present application, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be interpreted broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] In the present application, unless otherwise explicitly specified and limited, if the first feature is described as "on" or "under" the second feature, etc., it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0030] It should be noted that if an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for illustrative purposes and do not represent the only implementation.

[0031] Referring to Figures 1 to 3 , Figure 1 shows a shaft diagram of the male structure provided by an embodiment of the present application, Figure 2 is Figure 1 the cross-sectional view of the male structure shown along the line A-A, Figure 3 is Figure 1The axial schematic view of the contact pin in the shown male structure. An embodiment of the present application provides a male structure 20, which includes a contact pin 21 and an insulator 22, the contact pin 21 penetrating the insulator 22. The contact pin 21 is used to be plugged and electrically connected with a jack 31 of a female structure 30 to transmit electrical signals or electrical energy, etc.

[0032] Further, the insulator 22 is provided with a mounting hole 23, and the contact pin 21 penetrates the mounting hole 23. The number of the contact pin 21 can be multiple, and the number of the mounting hole 23 corresponds to multiple, and the multiple contact pins 21 correspond to penetrate the multiple mounting holes 23.

[0033] Please refer to Figure 2 and Figure 3 , an embodiment of the present application provides a contact pin 21, which includes a fixed segment 100 and a plugging segment 200, the fixed segment 100 is used to be connected with the insulator 22, and the plugging segment 200 is connected at the end of the fixed segment 100. The plugging segment 200 includes elastic arms 210, and at least two elastic arms 210 are oppositely and spacedly arranged. The elastic arm 210 includes a contact surface 211, which is located at the outer circumferential side of the elastic arm 210, and the contact surface 211 is outwardly convex in the axial direction O of the contact pin 21. Wherein, when the contact pin 21 is axially plugged with the jack 31, each contact surface 211 is abutted by the jack 31 to make each elastic arm 210 deform inwardly.

[0034] In combination with Figure 4 and Figure 5 , in the above-mentioned contact pin 21, the contact surface 211 of the elastic arm 210 is outwardly convex in the axial direction O of the contact pin 21, so that when the contact pin 21 is axially plugged with the jack 31, the jack 31 can gradually press and fold each elastic arm 210 along the contact surface 211 of each elastic arm 210, so that the region of the contact surface 211, in which the convex amplitude is the largest in the direction perpendicular to the axial direction O, is deformed inwardly. Thus, the elastic arm 210 is deformed and stores elastic potential energy, so that even in the environment with external interference such as vibration, the elastic arm 210 can always stably contact with the jack 31 of the external plug sleeve, and therefore the contact pin 21 has strong anti-interference ability in the contact and conduction mode.

[0035] Further, compared with the traditional technology in which an elastic element (such as a crown spring) is additionally arranged in the jack 31, in the present application, the elastic arm 210 is configured to be deformed, that is, the contact pin 21 itself can be deformed to improve the stability and anti-interference ability of the contact and conduction, and the independent element such as the crown spring can be omitted, which is convenient for manufacturing and assembly. Figure 5 As can be easily understood, in the present application, the jack 31 only needs to provide the function of inwardly folding and pressing the elastic arm 210, which is simple to manufacture and assemble.

[0036] And, the following will be described in combination with the specific structure of the contact pin 21, compared with configuring the component with elastic deformation ability on the jack 31, configuring the component with elastic deformation ability in the contact pin 21, the component with elastic deformation ability (i.e. the elastic arm 210 described in the present application) can be deformed more stably, and has a longer service life.

[0037] It should be noted that in the embodiments of the present application, the deformation mode of the elastic arm 210 can be that the area of the contact surface 211 protruding in the direction of the vertical axis O is flattened, or the elastic arm 210 is deformed by bending inward and outward around the fixed section 100, or both.

[0038] When the number of elastic arms 210 is 3 or more, the plurality of elastic arms 210 can be arranged at intervals around the circumferential direction of the fixed section 100, and the contact surface 211 protruding outward is located on the outer side.

[0039] Please refer to Figure 3 and Figure 6 In an embodiment, each elastic arm 210 is bent inward to form a throat portion 220 near one end of the fixed section 100. It can be understood that, as one of the components of the plug-in section 200, each elastic arm 210 is usually connected to the fixed section 100 in a cantilevered manner, so that the elastic arm 210 is bent inward near the fixed section 100, which facilitates the elastic arm 210 to be constructed in an arc shape and deformed conveniently under the action of the jack 31.

[0040] In combination with Figure 5 And, when the contact pin 21 and the jack 31 are axially inserted into each other, the areas of each elastic arm 210 used to form the throat portion 220 abut against each other. The area of the elastic arm 210 used to form the throat portion 220 is referred to as the abutting portion 212, and the other end opposite to the abutting portion 212 is referred to as the lead-in end 213. That is, the elastic arm 210 includes the abutting portion 212 and the lead-in end 213, the abutting portion 212 is located at one end relatively close to the fixed section 100, and the lead-in end 213 is located at one end relatively far from the fixed section 100. When the contact pin 21 and the jack 31 are axially inserted into each other, the abutting portions 212 of each elastic arm 210 abut against each other, so as to limit the bending amplitude of the elastic arm 210 around the fixed section 100, and transfer part of the gathering force to the arc-shaped part of the elastic arm 210, so as to deform correspondingly. In this way, the deformation of the two areas of the plug-in section 200 can be balanced, and the service life is improved. At the same time, the abutting of the abutting portions 212 provides support to each other, and also improves the counteracting force of the elastic arm 210 to the jack 31, and improves the stability of the contact.

[0041] Of course, in some embodiments, when the retraction force of the socket 31 on the elastic arm 210 is relatively small, the area (i.e. the abutting portion 212) of the elastic arm 210 used to form the throat 220 can also be close to each other and remain in a spaced position under the action of the socket 31.

[0042] Please continue to refer to Figure 3 and Figure 6 In one embodiment, the end of each elastic arm 210 away from the fixed section 100 is bent inward to form a beak 230, i.e. the lead-in end 213 of each elastic arm 210 collectively forms the beak 230. It is easy to understand that since the beak 230 is formed by the inward bending of the lead-in end 213 of the elastic arm 210, the beak 230 has a small size in the direction of the vertical axis O, so the beak 230 can play a lead-in role when the contact pin 21 and the socket 31 are axially inserted.

[0043] Furthermore, when the contact pin 21 and the socket 31 are axially inserted, the area of each elastic arm 210 used to form the beak 230 is close to each other or abuts against each other. Similar to the throat 220, the other end of the mating section 200 in this embodiment is also provided with a beak 230, which can further improve the stability of the contact of the mating section 200 and the service life.

[0044] Please continue to refer to Figure 3 and Figure 6 , combined with Figure 2 In one embodiment, the elastic arm 210 includes a relief surface 214 on the inner circumferential side, the relief surface 214 is recessed towards the side where the contact surface 211 is located, so that the wall thickness of at least part of the elastic arm 210 is uniform, facilitating deformation.

[0045] In one embodiment, the end surface of the insulator 22 away from the one end of the mating section 200 (i.e. the tail end of the male structure 20) is recessed to form a glue filling cavity 24, and the glue filling cavity 24 is used to accommodate glue. One end of the contact pin 21 is used to extend to the outside of the insulator 22 through the glue filling cavity 24. Thus, after each contact pin 21 is inserted into the insulator 22 to complete the assembly, glue can be filled into the glue filling cavity 24, and after the glue coagulates, a glue plate 40 can be formed in the glue filling cavity 24, improving the sealing, waterproofness, etc.

[0046] Please refer to Figure 2 and Figure 6 In one embodiment, the outer periphery of the end of the fixed section 100 away from the mating section 200 is provided with a glue containing groove 110, and the glue containing groove 110 is used to accommodate glue. When the contact pin 21 is assembled in the insulator 22, the area where the glue containing groove 110 is located is located in the glue filling cavity 24, so the configuration of the glue containing groove 110 can improve the amount of glue, increase the complexity of the shape of the contact part of the glue plate 40 and the contact pin 21, and increase the difficulty of the entry of external objects, i.e. improve the sealing and connection stability.

[0047] Referring to Figure 2 In one embodiment, the fixed section 100 is used to fixedly connect with the insulator 22. The fixed section 100 can be configured to be in interference fit with the insulator 22 to achieve the fixed connection.

[0048] Referring to Figure 3 , Figure 6 , in combination Figure 2 In one embodiment, the contact pin 21 further comprises a guide section 300. The guide section 300 is connected between the counter section 200 and the fixed section 100, and the outer diameter of the guide section 300 is smaller than that of the fixed section 100. Thus, when the contact pin 21 is assembled into the insulator 22, the guide section 300 can play a guiding role, facilitating the insertion of the fixed section 100 into the mounting hole 23.

[0049] In one embodiment, the contact pin 21 is configured to be formed by stamping from a plate material. Compared with turning to form the pin terminal, the stamping of the contact pin 21 can improve the utilization of materials. Moreover, the process of stamping the plate material to obtain the contact pin 21 can be automated, improving the processing efficiency. Further, the plate material can be processed and manufactured from a planar plate material to the substantially tubular contact pin 21 as described in the embodiments of the present application through steps such as cutting and multi-step coiling stamping.

[0050] Referring to Figure 7 and Figure 8 An embodiment of the present application further provides a connector 10, which comprises the male structure 20 as described in the embodiments, and the contact pin 21 as described in the embodiments, and thus the connector 10 also comprises the technical effects of the male structure 20 and the contact pin 21 as described in the embodiments. The connector 10 further comprises a female structure 30, which comprises a socket member 31 and an insulating sleeve 32, and the socket member 31 is arranged in the insulating sleeve 32. The socket member 31 of the female structure 30 is counter-connected and electrically connected with the contact pin 21 of the male structure 20 to transmit current and signals, etc.

[0051] Referring to Figure 2 In one embodiment, the counter section 200 of the contact pin 21 can be completely located in the insulator 22. When the male structure 20 is counter-connected with the female structure 30, part of the insulating sleeve 32 can be sleeved outside the insulator 22, and the socket member 31 is inserted into the mounting hole 23 to counter-connect with the contact pin 21. Thus, after the counter-connection of the male structure 20 and the female structure 30, the connector 10 has a relatively short axial dimension O, which is convenient for use in a narrow space.

[0052] Referring to Figure 8In one embodiment, the insulator 22 includes a first section 25 and a second section 26, the cross-sectional dimension of the first section 25 is smaller than that of the second section 26 in the direction of the vertical axis O. When the male structure 20 is inserted into the female structure 30, the insulator sleeve 32 can be sleeved on the first section 25.

[0053] Please refer to Figure 7 and Figure 8 In one embodiment, the insulator sleeve 32 includes a mating hole 33. The outer shape of the first section 25 can be configured to be adapted to the mating hole 33, so as to facilitate positioning and insertion. Further, the first section 25 includes a first positioning surface 27, and the hole wall of the mating hole 33 includes a second positioning surface 34, the first positioning surface 27 and the second positioning surface 34 are in surface contact and positioning fit when the male structure 20 is inserted into the female structure 30.

[0054] The technical features of the above embodiments can be combined in any manner. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combinations of the technical features do not contradict each other, they should be considered within the scope of the present disclosure.

[0055] The above embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be pointed out that, for ordinary skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A contact pin, characterized in that, The contact pin is used to mate with the socket and conduct electricity; the contact pin includes: Fixed section; The insertion segment is connected to the end of the fixed segment. The insertion segment includes an elastic arm, at least two elastic arms facing each other and spaced apart. The elastic arm includes a contact surface located on the outer periphery. The contact surface is convex arc-shaped in the axial direction of the contact pin. When the contact pin is axially inserted into the socket, each contact surface is abutted by the socket, causing each elastic arm to deform inward.

2. The contact pin according to claim 1, characterized in that, Each of the elastic arms bends inward at one end near the fixed section to form a throat; when the contact pin is axially inserted into the socket, the areas of each elastic arm used to form the throat are close to or abut against each other.

3. The contact pin according to claim 2, characterized in that, Each of the elastic arms has an inward bend at the end away from the fixed section to form a beak. When the contact pin is axially inserted into the socket, the areas of each elastic arm used to form the beak approach or abut against each other.

4. The contact pin according to claim 1, characterized in that, The elastic arm includes a clearance surface located on the inner circumferential side, the clearance surface being recessed on the side closest to the contact surface.

5. The contact pin according to claim 1, characterized in that, The contact pin further includes a guide section, the fixing section is used for fixed connection with the insulator, the guide section is connected between the insertion section and the fixing section, and the outer diameter of the guide section is smaller than the outer diameter of the fixing section.

6. The contact pin according to claim 1, characterized in that, A glue-containing groove is provided on the outer periphery of the end of the fixed section away from the insertion section, and the glue-containing groove is used to contain glue liquid.

7. The contact pin according to any one of claims 1 to 6, characterized in that, The contact pin is constructed to be formed by stamping sheet metal.

8. A male terminal structure, characterized in that, The male terminal structure includes an insulator and a contact pin as described in any one of claims 1 to 7, wherein the insulator has a mounting hole and the contact pin passes through the mounting hole.

9. The male terminal structure according to claim 8, characterized in that, The end face of the insulator away from the insertion segment is recessed and has a filling cavity for containing adhesive liquid. One end of the contact pin extends through the filling cavity to the outside of the insulator.

10. A connector, characterized in that, The connector includes a female end structure and a male end structure as described in claim 8 or 9, wherein the female end structure includes a socket member that is inserted into the contact pin.

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