A spring-loaded terminal assembly

Abstract

This application discloses a spring-loaded terminal assembly, comprising: an insulating body having a terminal receiving hole extending through in the vertical direction; two first abutment surfaces formed in the insulating body and located within the terminal receiving hole, the first abutment surfaces being disposed downwards in the vertical direction; a second abutment surface formed within the terminal receiving hole of the insulating body and located at the front end in the front-rear direction, the second abutment surface being disposed downwards in the vertical direction; a spring-loaded terminal fixed to the insulating body, the spring-loaded terminal having a base plate and a spring portion formed by folding back upwards from the front end of the base plate; the spring portion having a contact portion protruding upwards from the insulating body and two abutment portions extending further in the left-right direction from both sides of the spring portion; the two abutment portions being directly or indirectly abutted upwards on the two first abutment surfaces, and a portion of the spring portion being directly or indirectly abutted upwards on the second abutment surface.

Description

Technical Field

[0001] This application relates to a spring-loaded terminal assembly. Background Technology

[0002] With the advancement of technology and economic development, electronic devices such as mobile phones and tablets have become indispensable daily necessities. These digital electronic products have been widely integrated into people's daily lives, providing great convenience for people's lives and work, and enriching their lives. Headphones and headphone charging cases are among the commonly used electronic devices.

[0003] When charging earphones, the charging case typically connects the earphones to the metal contacts of the earphones via an internal electrical connection spring. Currently, existing earphone charging cases often use POGO PIN connectors. A POGO PIN connector is a flexible connector formed by assembling and riveting three basic parts: a spring, a sleeve, and a contact spring. It contains an internal spring structure. Both the POGO PIN contact spring and sleeve are machined parts, resulting in low production efficiency, high processing costs, and expensive products. Furthermore, the contact between the spring and sleeve is a hard contact, leading to poor contact stability and the possibility of momentary disconnection. It is unsuitable for lateral contact. When the POGO PIN connector in the earphone charging case is subjected to lateral contact force, the compression of the POGO PIN spring can cause shearing forces, leading to the spring becoming stuck or losing its elasticity, resulting in poor contact. Utility Model Content

[0004] The purpose of this application is to provide a spring-loaded terminal assembly that can improve contact stability and enhance the overall connection effect of the spring.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A spring-loaded terminal assembly, comprising:

[0007] An insulating body is provided with a terminal receiving hole, which penetrates the insulating body in the vertical direction;

[0008] Two first abutment surfaces are formed in the insulating body and located in the terminal receiving hole. The first abutment surfaces are arranged downward along the vertical direction, and the two first abutment surfaces are respectively located on both sides of the terminal receiving hole along the horizontal direction.

[0009] The second mounting surface is formed in the terminal receiving hole of the insulating body and is located at the front end in the front-back direction. The second mounting surface is arranged downward in the vertical direction.

[0010] A spring-loaded terminal is fixed to the insulating body. The spring-loaded terminal has a base plate and a spring portion formed by folding the front end of the base plate upward along the front-rear direction.

[0011] The spring piece has a contact portion that protrudes upward from the insulating body in the vertical direction and two abutment portions that extend further from both sides of the spring piece in the horizontal direction.

[0012] The two hooking parts are directly or indirectly hooked onto the two first hooking surfaces along the vertical direction, and a portion of the spring piece is directly or indirectly hooked onto the second hooking surface along the vertical direction.

[0013] Furthermore, it also includes: two support members, integrally extended and formed on both sides of the base plate, the two support members being correspondingly attached to the two first abutment surfaces upward along the vertical direction, and the two abutment portions being correspondingly directly attached to the two support members upward along the vertical direction.

[0014] Furthermore, the spring portion includes a transition portion formed by bending the front end of the substrate upward along the front-rear direction and a pressing portion formed by extending the upper end of the transition portion backward along the front-rear direction. The pressing portion is directly or indirectly attached to the second attachment surface in the vertical direction.

[0015] The pressing portion is disposed opposite to the substrate in the vertical direction;

[0016] The contact portion is formed by further extending the rear end of the crimping portion in the front-rear direction.

[0017] Furthermore, the spring portion includes a first elastic arm formed by extending upward and backward at the rear end of the pressing portion in the front-rear direction, and a second elastic arm formed by folding back downward at the upper edge of the first elastic arm.

[0018] The contact portion is formed at the connection between the first elastic arm and the second elastic arm.

[0019] Furthermore, the second elastic arm is formed by extending downward and backward at the upper edge of the first elastic arm.

[0020] Furthermore, the angle between the first elastic arm and the second elastic arm is no greater than 30 degrees.

[0021] Furthermore, the free end of the second elastic arm extends downward and forward at an angle to form a third elastic arm; the free end of the third elastic arm elastically contacts the upper surface of the substrate.

[0022] Furthermore, the angle between the second elastic arm and the third elastic arm is not less than 120 degrees.

[0023] Furthermore, each of the support members includes a first extension segment formed by bending upward from the rear end of the base plate in the front-rear direction and a second extension segment formed by bending forward from the upper edge of the first extension segment in the front-rear direction, and the abutment portion is correspondingly abutted against the lower surface of the second extension segment.

[0024] The third extension section extends in the left-right direction and integrally connects the free ends of the second extension sections of the two support members. The pressing part is directly attached to the lower surface of the third extension section in the up-down direction, and the third extension section is directly attached to the second attachment surface in the up-down direction.

[0025] Furthermore, a limiting portion is formed on the rearward extension of the front inner wall of the terminal receiving hole of the insulating body, and the second abutment surface is formed by the lower surface of the limiting portion;

[0026] The limiting part further includes a limiting surface facing backward in the front-rear direction, and the front surface of the transition part is positioned forward against the limiting surface in the front-rear direction.

[0027] Furthermore, the spring terminal and the insulating body are fixed together by integral injection molding.

[0028] Furthermore, it also includes: a relief groove, which is recessed on the lower surface of the insulating body and located behind the spring terminal in the front-back direction, and the limiting surface is located above the relief groove in the vertical direction; the relief groove causes the lower portion of the front surface of the transition portion to be exposed to the insulating body.

[0029] Furthermore, the spring-loaded terminal is fixed to the insulating body by integral injection molding, and the entire substrate is exposed from the terminal receiving hole;

[0030] The rear end edge of the substrate extends rearward to form a mating foot that is partially embedded in the insulating body and partially extends rearward through the insulating body.

[0031] At least one side of the substrate extends in the left-right direction to form a stabilizing foot embedded in the insulating body;

[0032] Along the front-to-back direction, the stabilizing foot is located near the front of the base plate.

[0033] Furthermore, a boss is formed by punching a portion downwards at a local location of the substrate, and the boss at least partially protrudes downwards from the plane containing the lower surface of the insulating body.

[0034] Compared with the prior art, the beneficial effects of this application are: it can improve the stability of the contact and improve the connection effect of the entire spring. Attached Figure Description

[0035] Figure 1 This is a three-dimensional schematic diagram of the spring-loaded terminal assembly of this application.

[0036] Figure 2 yes Figure 1 A three-dimensional schematic diagram of a spring-loaded terminal assembly viewed from another angle.

[0037] Figure 3 yes Figure 2 Exploded perspective view of the spring-loaded terminal assembly.

[0038] Figure 4 yes Figure 1 Exploded perspective view of the spring-loaded terminal assembly.

[0039] Figure 5 This is a top view of the spring-loaded terminal assembly of this application.

[0040] Figure 6 It is self Figure 5 A cross-sectional view along line AA in the middle.

[0041] Figure 7 It is self Figure 5 The cross-sectional view of the AA line further illustrates the schematic diagram after the spring terminal is separated from the insulating body.

[0042] Figure 8 This is a three-dimensional schematic diagram of the spring-loaded terminal of the spring-loaded terminal assembly of this application.

[0043] Figure 9 yes Figure 8 The front view of the spring contact terminal is in the front-to-back direction.

[0044] Figure 10 This is a perspective view of another embodiment of the spring-loaded terminal of the spring-loaded terminal assembly of this application.

[0045] Figure 11 yes Figure 10 Side view of the spring contact terminal. Detailed Implementation

[0046] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0047] In this application description, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] In the description of this application, it should be understood that the terms “comprising” and “having” as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are expressly listed, but may include other steps or units that are not expressly listed or that are inherent to such process, method, product, or apparatus.

[0049] To ensure the accuracy of the description throughout this application, all design directions should be referred to as... Figure 1 For reference, the X-axis direction is defined as the left-right direction; the Y-axis direction is defined as the up-down direction, with the positive Y-axis direction being up; and the Z-axis direction is defined as the front-back direction, with the positive Z-axis direction being front.

[0050] Please refer to the reference. Figures 1 to 9 As shown, the spring-loaded terminal assembly includes an insulating body 1 and a plurality of spring-loaded terminals 2 fixed to the insulating body 1, with the plurality of spring-loaded terminals 2 arranged in a row along the left-right direction. The insulating body 1 has a plurality of terminal receiving holes 10 for accommodating the spring-loaded terminals 2, each terminal receiving hole 10 penetrating the insulating body 1 in the vertical direction. Further, each terminal receiving hole 10 of the insulating body 1 has a first abutment surface 11 formed on both sides along the left-right direction. Specifically, the first abutment surface 11 is the inner wall surface of a groove formed by an upward indentation of the lower surface of the insulating body 1, and the first abutment surface 11 is arranged downward along the vertical direction. Further, each terminal receiving hole 10 of the insulating body 1 has a second abutment surface 121 formed at the front end position along the front-rear direction, and the second abutment surface 121 is arranged downward along the vertical direction. In one embodiment, the second abutment surface 121 is the inner wall surface of a groove formed by the downward indentation of the lower surface of the insulating body 1 (similar to the formation of the first abutment surface 11 in this application); of course, in other embodiments, the front inner wall surface of the terminal receiving hole 10 of the insulating body 1 (that is, the hole wall facing backward in the front-back direction) extends backward to form a limiting part 12, and the second abutment surface 121 may also be formed from the lower surface of the limiting part 12.

[0051] Please refer to Figures 1 to 9 As shown, each of the spring terminals 2 is fixed to the insulating body 1, including a base plate 21 and a spring portion 22 formed by folding back the front end of the base plate 21 along the front-rear direction. The spring portion 22 has a contact portion 221 that protrudes upward from the insulating body 1 in the vertical direction and two abutment portions 222 formed by extending further from both sides of the spring portion 22 in the left-right direction. In one embodiment, the two abutment portions 222 are directly abutted against the two first abutment surfaces 11 in the vertical direction; a portion of the spring portion 22 is directly abutted against the second abutment surface 121 in the vertical direction. In this way, a pre-compression effect can be achieved, increasing the positive pressure of the spring terminal 2, thereby increasing the positive contact force between the spring terminal 2 and the docking module (not shown).

[0052] Please refer to the reference. Figures 1 to 9 In the illustrated embodiment, each of the spring-loaded terminals 2 has a support member 23 integrally extended and bent on both sides of its base plate 21. The two support members 23 are directly attached to the two first mounting surfaces 11 in the vertical direction, and the two mounting portions 222 are directly attached to the two support members 23 in the vertical direction, thus indirectly attaching the two mounting portions 222 to the corresponding first mounting surfaces 11. The support members 23 prevent the mounting portions 222 from scratching the insulating body 1, allowing the corresponding position of the insulating body 1 (such as the position of the first mounting surface 11) to withstand greater force. Further, in a preferred embodiment, each support member 23 includes a first extension segment 231 formed by bending upwards from the rear end of the base plate 21 in the front-rear direction, and a second extension segment 232 formed by bending forwards from the upper edge of the first extension segment 231 in the front-rear direction. The two second extension segments 232 are attached to the two first mounting surfaces 11 in the vertical direction. The abutment part 222 is attached to the lower surface of the second extension section 232.

[0053] In one embodiment of this application, the spring piece 22 includes a transition portion 223 formed by bending the front end of the substrate 21 upward along the front-rear direction, and a pressing portion 224 formed by extending the upper end of the transition portion 223 rearward along the front-rear direction. The pressing portion 224 is directly attached to the second abutment surface 121 upward along the vertical direction. The pressing portion 224 is disposed opposite to the substrate 21 along the vertical direction. The contact portion 221 is further formed by extending the rear end of the pressing portion 224 along the front-rear direction. Of course, another embodiment can also be adopted ( Figure 10 and Figure 11As shown), the spring terminal 2 is provided with a third extension section 233. The third extension section 233 extends along the left-right direction and integrally connects the free ends of the second extension sections 232 of the two support members 23 of the same spring terminal 2. The crimping part 224 directly abuts against the lower surface of the third extension section 233 in the up-down direction. The third extension section 233 directly abuts against the second abutment surface 121 in the up-down direction to realize the local position of the spring part 22 ( Figures 1 to 11 In the implementation, the upper surface of the crimping part 224 is indirectly attached to the second attachment surface 121 along the vertical direction.

[0054] Please refer to the reference. Figures 1 to 9 The first embodiment shown, or Figure 10 and Figure 11 In the second embodiment shown, the spring portion 22 includes a first elastic arm 225 formed by the pressing portion 224 extending upward and backward at its rear end along the front-rear direction, and a second elastic arm 226 formed by the upper edge of the first elastic arm 225 folding downward. The contact portion 221 is formed at the connection between the first elastic arm 225 and the second elastic arm 226. In a preferred embodiment, the second elastic arm 226 extends downward and backward at an angle from the upper edge of the first elastic arm 225. In a preferred embodiment, the angle between the first elastic arm 225 and the second elastic arm 226 is not greater than 30 degrees. In a preferred embodiment, a third elastic arm 227 is further formed at the free end of the second elastic arm 226, extending downward and forward at an angle. The free end of the third elastic arm 227 elastically contacts the upper surface of the substrate 21 downward. In a preferred embodiment, the angle between the second elastic arm 226 and the third elastic arm 227 is not less than 120 degrees. The structural design and angle setting of the first elastic arm 225, the second elastic arm 226, and the third elastic arm 227 enable the spring portion 22 to release stress more evenly when it undergoes elastic deformation under force, preventing plastic deformation. Furthermore, the free end of the third elastic arm 227 elastically contacts the upper surface of the substrate 21 downwards. When the contact portion 221 of the spring portion 22 is pressed down and deformed, it allows the spring portion 22 to generate greater positive pressure, increasing the positive pressure of the connection between the spring terminal 2 and the docking module, resulting in more stable contact between the two.

[0055] Furthermore, referring to the accompanying drawings of this application, in this embodiment, the insulating body 1 further forms a limiting surface 122 facing rearward along the front-rear direction, and the front surface of the transition portion 223 is positioned forward against and limited by the limiting surface 122 (specifically, the upper end of the transition portion 223) along the front-rear direction. In a preferred embodiment, the limiting surface 122 is formed on the limiting portion 12. In a preferred embodiment, the spring terminal 2 and the insulating body 1 are fixed together by integral injection molding. In the embodiment of integral injection molding, a relief groove 120 is also formed on the insulating body 1. Specifically, the relief groove 120 is recessed on the lower surface of the insulating body 1 and is located behind the spring terminal 2 along the front-rear direction, and the limiting surface 122 is located above the relief groove 120 along the vertical direction. The relief groove 120 exposes the lower portion of the front surface of the transition portion 223 of the insulating body 1. The relief groove 120 is used for positioning the spring terminal 2 during integral injection molding of the insulating body 1. It also provides space for the elastic deformation of the spring terminal 2. Further, in a preferred embodiment, the substrate 21 is entirely exposed from the terminal receiving hole 10. The rear end edge of the substrate 21 extends rearward to form a mating foot 211, partially embedded within the insulating body 1 and partially extending rearward through the insulating body 1. The mating foot 211 is located between two supports 23 of the same spring terminal 2 in the left-right direction. Further, in this embodiment, at least one side of the substrate 21 extends in the left-right direction to form a stabilizing foot 212 embedded within the insulating body 1. In the front-rear direction, the stabilizing foot 212 is located near the front of the substrate 21.

[0056] In other embodiments, the spring terminal can be designed to be assembled with the insulating body 1. In this assembly method, the stabilizing foot 212 can be designed to be inserted into the mounting groove (not shown) formed at the corresponding position of the insulating body 1. Alternatively, the corresponding positions of the insulating body 1 and the mating foot 211 can be accommodated by a clearance groove (not shown).

[0057] Please refer to Figure 6 and Figure 7As shown, in this application, a boss 210 is formed by a downward punching protrusion at a partial location of the substrate 21. The boss 210 at least partially protrudes downward (actually slightly protrudes) from the plane containing the lower surface of the insulating body 1. In one mounting method, the lower surface of the insulating body 1 is attached to the surface of a mating circuit board (not shown). The aforementioned boss 210 structure allows the substrate 21 to exhibit an upward elastic deformation tendency after the spring-loaded terminal assembly of this application is fixedly assembled onto the mating circuit board. This ensures that the two abutment portions 222 described above are directly or indirectly abutted against the two first limiting surfaces 11 along the first direction; and that a partial location of the spring-loaded portion 22 is directly or indirectly abutted against the second limiting surface 12 along the first direction. Of course, the boss 210 can also be used as a soldering foot for the mating circuit board. For example, the assembly and fixation between the spring-loaded terminal assembly of this application and the mating circuit board can be achieved by a fixing component (not shown, such as a bolt).

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0059] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spring-loaded terminal assembly, characterized in that, include: An insulating body (1) is provided with a terminal receiving hole (10), which penetrates the insulating body (1) in the vertical direction; Two first mounting surfaces (11) are formed in the insulating body (1) and located in the terminal receiving hole (10). The first mounting surfaces (11) are arranged downward along the vertical direction, and the two first mounting surfaces (11) are located on both sides of the terminal receiving hole (10) along the horizontal direction. The second mounting surface (121) is formed in the terminal receiving hole (10) of the insulating body (1) and is located at the front end in the front-rear direction. The second mounting surface (121) is arranged facing downward in the vertical direction. The spring-loaded terminal (2) is fixed to the insulating body (1). The spring-loaded terminal (2) is provided with a base plate (21) and a spring-loaded part (22) formed by folding the front end of the base plate (21) upward in the front-back direction. The spring piece (22) has a contact part (221) that protrudes upward from the insulating body (1) in the vertical direction and two abutment parts (222) that extend further from both sides of the spring piece (22) in the horizontal direction. The two hooking parts (222) are directly or indirectly hooked onto the two first hooking surfaces (11) in the vertical direction, and a portion of the spring piece (22) is directly or indirectly hooked onto the second hooking surface (121) in the vertical direction.

2. The spring-loaded terminal assembly according to claim 1, characterized in that, Also includes: Two support members (23) are integrally extended on both sides of the base plate (21). The two support members (23) are attached to the two first hanging surfaces (11) in the vertical direction. The two hanging parts (222) are directly attached to the two support members (23) in the vertical direction.

3. The spring-loaded terminal assembly according to claim 1, characterized in that: The spring piece (22) includes a transition portion (223) formed by bending the front end of the substrate (21) upward along the front-rear direction and a pressing portion (224) formed by extending the upper end of the transition portion (223) backward along the front-rear direction. The pressing portion (224) is directly or indirectly attached to the second attachment surface (121) in the up-down direction. The crimping portion (224) is disposed opposite to the substrate (21) in the vertical direction; The contact portion (221) is formed by further extending the rear end of the crimping portion (224) in the front-rear direction.

4. The spring-loaded terminal assembly according to claim 3, characterized in that: The spring piece (22) includes a first elastic arm (225) formed by extending upward and backward at the rear end of the crimping part (224) in the front-rear direction, and a second elastic arm (226) formed by folding back downward at the upper edge of the first elastic arm (225). The contact portion (221) is formed at the connection between the first elastic arm (225) and the second elastic arm (226).

5. The spring-loaded terminal assembly according to claim 4, characterized in that: The second elastic arm (226) is formed by extending downward and backward at the upper edge of the first elastic arm (225).

6. The spring-loaded terminal assembly according to claim 5, characterized in that: The angle between the first elastic arm (225) and the second elastic arm (226) is no greater than 30 degrees.

7. The spring-loaded terminal assembly according to claim 4, 5, or 6, characterized in that: The free end of the second elastic arm (226) extends downward and forward to form a third elastic arm (227); The free end of the third elastic arm (227) elastically contacts the upper surface of the substrate (21) downwards.

8. The spring-loaded terminal assembly according to claim 7, characterized in that: The angle between the second elastic arm (226) and the third elastic arm (227) is not less than 120 degrees.

9. The spring-loaded terminal assembly according to claim 3, characterized in that: The support member (23) includes a first extension section (231) formed by bending upward from the rear end of the base plate member (21) in the front-rear direction and a second extension section (232) formed by bending forward from the upper edge of the first extension section (231) in the front-rear direction. The two second extension segments (232) are attached to the two first hanging surfaces (11) upward along the vertical direction, and the hanging part (222) is attached to the lower surface of the second extension segment (232); The third extension section (233) extends in the left-right direction and integrally connects the free ends of the second extension sections (232) of the two support members (23). The pressing part (224) is directly attached to the lower surface of the third extension section (233) in the up-down direction. The third extension section (233) is directly attached to the second attachment surface (121) in the up-down direction.

10. The spring-loaded terminal assembly according to claim 3, characterized in that: The terminal receiving hole (10) of the insulating body (1) extends rearward to form a limiting part (12), and the second abutment surface (121) is formed by the lower surface of the limiting part (12); The limiting part (12) further includes a limiting surface (122) facing backward in the front-rear direction, and the transition part (223) abuts against the limiting surface (122) along the front-rear direction.

11. The spring-loaded terminal assembly according to claim 10, characterized in that: The spring terminal (2) and the insulating body (1) are fixed together by integral injection molding.

12. The spring-loaded terminal assembly according to claim 11, characterized in that, Also includes: A relief groove (120) is recessed on the lower surface of the insulating body (1) and located behind the spring terminal (2) in the front-back direction. The limiting surface (122) is located above the relief groove (120) in the vertical direction. The relief groove (120) causes the lower portion of the front surface of the transition portion (223) to be exposed on the insulating body (1).

13. The spring-loaded terminal assembly according to claim 1, characterized in that: The spring-loaded terminal (2) and the insulating body (1) are fixed together by integral injection molding, and the substrate (21) is exposed from the terminal receiving hole (10); The rear end edge of the substrate (21) extends rearward to form a mating pin (211) that is partially embedded in the insulating body (1) and partially extends rearward through the insulating body (1) to the outside of the insulating body (1). At least one side of the substrate (21) extends in the left-right direction to form a stabilizing foot (212) embedded in the insulating body (1); Along the front-to-back direction, the stabilizing foot (212) is located near the front of the base plate (21).

14. The spring-loaded terminal assembly according to claim 1, characterized in that: The substrate (21) has a boss (210) formed by a downward punching protrusion at a local position, and the boss (210) protrudes downward at least partially from the plane of the lower surface of the insulating body (1).

Images