Golden finger type guide rail grounding terminal

Abstract

The utility model discloses a golden finger type guide rail grounding terminal, which comprises a terminal module, a guide rail and a PCB (printed circuit board) module, the terminal module comprises an insulating base and a grounding terminal, one end of the insulating base can be sleeved on the guide rail made of conductive materials in a sliding manner, the other end of the insulating base is provided with a PCB slot for the PCB module to insert, the PCB module is provided with a PCB with a golden finger, and the terminal module is provided with a plurality of terminals. One end of a grounding terminal fixedly installed in the insulation base is provided with an elastic contact part which can elastically abut against the surface of the guide rail and is electrically connected with the guide rail, and the other end of the grounding terminal is provided with an elastic clamping piece structure which can clamp golden fingers on a PCB in a one-to-one correspondence mode and is electrically connected with the PCB. According to the utility model, the welding connection of the grounding terminal and the PCB is avoided, so that the terminal module and the PCB module are convenient and rapid to install, and the replacement and use of different PCB modules can be realized.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a gold finger type rail grounding terminal. Background Technology

[0002] In common rail-mounted connector modules, the grounding terminal achieves conductivity by maintaining close contact with the rail made of conductive material through an elastic structure. At the same time, the grounding terminal is also soldered to the PCB board to achieve the grounding function. This structure of the grounding terminal makes the connector's grounding terminal and PCB board form an integral structure after soldering, and the two cannot be separated. This makes it inconvenient to replace different PCB boards to achieve different functions, and the assembly is inconvenient because the grounding terminal and PCB board need to be soldered. Utility Model Content

[0003] To overcome the above deficiencies, this utility model provides a gold finger type rail grounding terminal. One end of the gold finger type rail grounding terminal contacts the rail through an elastic contact part, and the other end clamps the PCB through an elastic clip structure, thus realizing the grounding function. At the same time, it is quick to install and does not require soldering.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a gold finger type guide rail grounding terminal, including a terminal module, a guide rail and a PCB module. The terminal module includes an insulating base and a grounding terminal. One end of the insulating base can be slidably sleeved on the guide rail made of conductive material, and the other end of the insulating base forms a PCB slot. The PCB module can be inserted into the PCB slot at the other end of the terminal module. The PCB module is provided with a PCB board with gold fingers. The grounding terminal is fixedly installed in the insulating base. One end of the grounding terminal forms an elastic contact part, and the other end of the grounding terminal forms an elastic clamping structure. The elastic contact part at one end of the grounding terminal can elastically press against the surface of the guide rail and be electrically connected to the guide rail. The elastic clamping structure at the other end of the grounding terminal can clamp the gold fingers on the PCB board one by one and be electrically connected to the PCB board.

[0005] As a further improvement of this utility model, the elastic clip structure includes a first clip and a second clip with a cantilever structure. The free ends of the first clip and the second clip respectively form V-shaped bending structures with opening directions opposite to each other. The V-shaped bending portions of the first clip and the second clip are in close contact with the gold fingers on the PCB board through the convex spherical surface.

[0006] As a further improvement of this utility model, the extension direction of the guide rail is the front-to-back direction, the width direction of the guide rail is the left-to-right direction, and the PCB module, terminal module and guide rail are sequentially connected and arranged in the up-down direction. The guide rail includes a U-shaped body and flanges formed by bending the left and right side walls of the U-shaped body outward. Two hooks are provided at intervals on the insulating base of the terminal module, and a T-shaped channel is formed between the two hooks. The rail is inserted into the T-shaped channel, and the flanges on both sides of the guide rail are respectively supported on the hooks of the two hooks.

[0007] As a further improvement of this utility model, the elastic contact portion of the grounding terminal is a cantilever structure extending in the left-right direction, and its free end is in close contact with the left or right flange of the guide rail.

[0008] As a further improvement of this utility model, the elastic contact portion of the grounding terminal forms a wave-shaped structure by at least two consecutive arc bends from the root to the free end, and the free end of the elastic contact portion of the grounding terminal contacts the guide rail through a convex arc surface.

[0009] As a further improvement of this utility model, the elastic contact portion of the grounding terminal is provided with at least one slit extending from its free end toward the root, and the slit makes the elastic contact portion form a multi-lobed structure.

[0010] As a further improvement of this utility model, the bottom surface of the T-shaped channel formed by the insulating base is provided with a receiving groove that matches the shape of the elastic contact part of the grounding terminal. The elastic contact part of the grounding terminal can be elastically deformed and accommodated in the receiving groove when squeezed by the track.

[0011] As a further improvement of this utility model, at least one hook on the insulating base is a movable hook that can swing at a set angle or slide a set distance in the left and right direction. The insulating base is also provided with an elastic body, which provides an elastic holding force to the movable hook so that the two hooks are kept in the state of supporting the two flanges of the guide rail.

[0012] As a further improvement of this utility model, the grounding terminal also includes a terminal body. The elastic clip structure and the elastic contact part are integrally formed on the upper and lower ends of the terminal body, respectively. A first inverted structure is provided on the two side walls in the front and rear directions of the terminal body, and a second inverted structure is provided on the side walls in the left, right, front and rear directions of the terminal body. The insulating base of the terminal module is provided with a terminal holding hole that runs through the upper and lower parts. The terminal body is inserted into the terminal holding hole in the insulating base, and the first inverted structure and the second inverted structure on the terminal body are fixedly embedded and positioned with the inner side wall of the holding hole in the insulating base.

[0013] As a further improvement of this utility model, the PCB slot at the other end of the insulating base is provided with slots on both sides, and the PCB module is provided with buckles on both sides. When the PCB module is inserted into the PCB slot, the buckles can be engaged in the slots to achieve a fixed connection between the PCB module and the insulating base. The bottom surface of the PCB slot is provided with a T-shaped protrusion structure with an upper end smaller than the lower end. A clip slot is formed in the T-shaped protrusion structure. The elastic clip structure of the grounding terminal is accommodated in the clip slot. The left and right side walls of the upper end of the T-shaped protrusion structure with the smaller size form an opening slot that is directly opposite to the clip slot. The PCB board of the PCB module can be inserted into the opening slot. The lower end of the PCB module is provided with a clearance notch that is directly opposite to the position of its PCB gold fingers. The lower end of the T-shaped protrusion structure on the bottom surface of the PCB slot can be inserted into the clearance notch.

[0014] The beneficial technical effects of this utility model are as follows: This utility model designs the grounding terminal as an elastic contact part with a cantilever structure at one end and an elastic clamping structure at the other end. The elastic contact part is in close contact with the guide rail surface to achieve electrical connection with the guide rail, and the elastic clamping structure clamps the gold fingers on the PCB board to achieve electrical connection with the PCB board. This achieves the grounding function while avoiding the need for soldering the grounding terminal to the PCB board, making the installation of the terminal module and the PCB module convenient and quick. It also allows for the replacement of different PCB modules. The clamping opening of the elastic clamping structure of the grounding terminal is also designed as a spherical surface, which provides better contact and support with the gold fingers of the PCB board. The elastic contact part of the grounding terminal is designed as a double arc design extending to the left and right, which can compress space and has good fatigue resistance. At the same time, the elastic contact part of the grounding terminal forms a multi-lobed design to ensure the reliability of contact with the guide rail. Attached Figure Description

[0015] Figure 1 This is an exploded perspective view of the present invention;

[0016] Figure 2 for Figure 1 Enlarged view of section A in the middle;

[0017] Figure 3 This is a perspective view of the present utility model;

[0018] Figure 4 for Figure 3 Enlarged view of section B in the middle;

[0019] Figure 5 Diagram showing the elastic contact state between the grounding terminal and the guide rail;

[0020] Figure 6 This is a cross-sectional view showing the grounding terminal being clamped to the PCB board.

[0021] Figure 7This is a first perspective view of the grounding terminal of this utility model;

[0022] Figure 8 This is a second perspective view of the grounding terminal of this utility model;

[0023] Figure 9 This is a third perspective view of the grounding terminal of this utility model. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] Example: A gold finger type rail grounding terminal includes a terminal module 1, a rail 2, and a PCB module 3. The terminal module 1 includes an insulating base 11 and a grounding terminal 12. One end of the insulating base 11 is slidably fitted onto the rail 2 made of conductive material, and the other end of the insulating base 11 forms a PCB slot 111. The PCB module 3 can be inserted into the PCB slot 111 at the other end of the terminal module 1. The PCB module 3 is provided with a PCB board 31 with gold fingers. The grounding terminal 12 is fixedly installed in the insulating base 11. One end of the grounding terminal 12 forms an elastic contact portion 121, and the other end of the grounding terminal 12 forms an elastic clamping structure 122. The elastic contact portion 121 at one end of the grounding terminal 12 can elastically press against the surface of the rail 2 and be electrically connected to the rail 2. The elastic clamping structure 122 at the other end of the grounding terminal 12 can clamp the gold fingers on the PCB board 31 one by one, thereby being electrically connected to the PCB board 31.

[0026] During assembly, the terminal module 1 is slidably mounted on the guide rail 2, and the PCB module 3 is inserted into the PCB slot 111 of the terminal module 1. The elastic contact part 121 at one end of the grounding terminal 12 of the terminal module 1 presses tightly against the surface of the guide rail 2 and thus conducts through the guide rail 2. The elastic clip structure 122 at the other end of the grounding terminal 12 of the terminal module 1 clamps the gold fingers on the PCB board 31 and thus conducts through the grounding circuit of the PCB board 31. In this way, the grounding function is achieved while avoiding soldering the grounding terminal 12 to the PCB board 31. The electrical connection between the grounding terminal 12 and the PCB board 31 can be completed with just one insertion, which realizes quick installation and also makes it easy to replace different PCB modules 3.

[0027] The elastic clamping structure 122 includes a first clamping piece 1221 and a second clamping piece 1222 in a cantilever structure. The free ends of the first clamping piece 1221 and the second clamping piece 1222 respectively form V-shaped bending structures with opening directions opposite to each other. The V-shaped bending portions of the first clamping piece 1221 and the second clamping piece 1222 are in close contact with the gold fingers on the PCB board 31 through the convex spherical surface 1223. Conductivity is achieved by elastically clamping the gold fingers of the PCB board 31 by the first clamping piece 1221 and the second clamping piece 1222. At the same time, the clamping openings of the first clamping piece 1221 and the second clamping piece 1222 adopt a spherical design, which provides better contact and clamping effect with the gold fingers of the PCB board 31, and the gold fingers will not be worn even if the PCB board 31 is frequently plugged in and out.

[0028] Assume the extension direction of guide rail 2 is the front-to-back direction, the width direction of guide rail 2 is the left-to-right direction, and the PCB module 3, terminal module 1 and guide rail 2 are sequentially connected and arranged in the up-down direction. The guide rail 2 includes a U-shaped body 21 and flanges 22 formed by bending the left and right side walls of the U-shaped body 21 outward. Two hooks 112 are provided at intervals on the insulating base 11 of the terminal module 1. A T-shaped channel is formed between the two hooks 112. The rail is inserted into the T-shaped channel, and the flanges 22 on both sides of the guide rail 2 are respectively supported on the hooks of the two hooks 112.

[0029] The elastic contact portion 121 of the grounding terminal 12 is a cantilever structure extending in the left-right direction, and its free end is in close contact with the left or right flange 22 of the guide rail 2. This structure occupies little space, can achieve compact assembly, and the elastic contact portion 121 has stable contact with the flange 22 of the guide rail 2.

[0030] The elastic contact portion 121 of the grounding terminal 12 forms a wave-shaped structure by at least two consecutive arc bends from its root to its free end, and the free end of the elastic contact portion 121 of the grounding terminal 12 contacts the guide rail 2 through a convex arc surface. The elastic contact portion 121 preferably adopts a double arc design, which can compress space and has good fatigue resistance.

[0031] The grounding terminal 12 has at least one slit 1211 extending from its free end toward its root on its elastic contact portion 121, which makes the elastic contact portion 121 form a multi-lobed structure. The multi-lobed design can ensure the reliability of the contact between the elastic contact portion 121 and the guide rail 2 and prevent poor contact.

[0032] The bottom surface of the T-shaped channel formed by the insulating base 11 is provided with a receiving groove 113 that matches the shape of the elastic contact portion 121 of the grounding terminal 12. The elastic contact portion 121 of the grounding terminal 12 can be elastically deformed and accommodated in the receiving groove 113 when squeezed by the rail. This further compresses the space and ensures the elastic deformation capability of the elastic contact portion 121, ensuring its tight contact with the guide rail 2.

[0033] At least one hook 112 on the insulating base 11 is a movable hook 112 capable of swinging at a set angle or sliding a set distance in the left-right direction. The insulating base 11 is also provided with an elastic body 114, which provides an elastic holding force to the movable hook 112 so that the two hooks 112 hold the flanges 22 on both sides of the guide rail 2. The lower end of the hook 112 is preferably formed as a guide slope to facilitate the insertion of the guide rail 2 into the T-shaped channel from bottom to top. When the guide rail 2 is installed, the movable hook 112 can be pushed back under pressure, and after the guide rail 2 is installed, the movable hook 112 can automatically return to its original position.

[0034] The grounding terminal 12 also includes a terminal body 123. The elastic clip structure 122 and the elastic contact portion 121 are integrally formed on the upper and lower ends of the terminal body 123, respectively. A first inverted structure 1231 is provided on the front-rear side walls of the terminal body 123, and a second inverted structure 1232 is provided on the left-right front-rear side walls of the terminal body 123. The insulating base 11 of the terminal module 1 has a terminal holding hole 115 that extends vertically. The terminal body 123 is inserted into the terminal holding hole 115 in the insulating base 11, and the first inverted structure 1231 and the second inverted structure 1232 on the terminal body 123 are fixedly embedded and positioned with respect to the inner side wall of the holding hole 115 in the insulating base 11. The first inverted structure 1231 and the second inverted structure 1232 on the terminal body 123 can be embedded into or locked against the side wall of the holding hole 115, thereby achieving the fixed positioning of the grounding terminal 12 on the insulating base 11.

[0035] The PCB slot 111 at the other end of the insulating base 11 has slots 1111 on both sides, and buckles 33 on both sides of the PCB module 3. When the PCB module 3 is inserted into the PCB slot 111, the buckles 33 can engage with the slots 1111 to fix the PCB module 3 to the insulating base 11. The bottom surface of the PCB slot 111 has a T-shaped protrusion 1112 with an upper dimension smaller than the lower dimension, and a clip slot 111 is formed in the T-shaped protrusion 1112. 3. The elastic clip structure 122 of the grounding terminal 12 is accommodated in the clip slot 1113, and the upper left and right side walls of the smaller T-shaped protrusion structure 1112 form an opening slot that is directly opposite to the clip slot 1113. The PCB board 31 of the PCB module 3 can be inserted into the opening slot. The lower end of the PCB module 3 is provided with a clearance notch 32 that is directly opposite to the position of its PCB gold finger. The lower end of the T-shaped protrusion structure 1112 on the bottom surface of the PCB slot 111 can be inserted into the clearance notch 32.

[0036] After the PCB module 3 is inserted into the PCB slot 111 of the insulating base 11, the PCB board 31 is automatically inserted into the elastic clip structure 122 of the grounding terminal 12 and clamped. At the same time, the buckles 33 on both sides of the PCB module 3 are engaged into the slots 1111 of the insulating base 11, realizing the fixed connection between the PCB module 3 and the terminal module 1. Meanwhile, the lower end of the T-shaped protrusion structure 1112 is accommodated in the clearance notch 32 at the lower end of the PCB module 3 and stops at the lower end of the PCB board 31, thereby limiting the insertion depth of the PCB module 3 and preventing damage to the PCB board 31.

Claims

1. A gold finger type rail grounding terminal, characterized in that: The device includes a terminal module (1), a guide rail (2), and a PCB module (3). The terminal module includes an insulating base (11) and a grounding terminal (12). One end of the insulating base is slidably fitted onto the guide rail made of conductive material, and the other end of the insulating base forms a PCB slot (111). The PCB module can be inserted into the PCB slot at the other end of the terminal module. The PCB module is provided with a PCB board (31) with gold fingers. The grounding terminal is fixedly installed in the insulating base. One end of the grounding terminal forms an elastic contact part (121), and the other end of the grounding terminal forms an elastic clip structure (122). The elastic contact part at one end of the grounding terminal can elastically press against the surface of the guide rail and be electrically connected to the guide rail. The elastic clip structure at the other end of the grounding terminal can clamp the gold fingers on the PCB board one by one and be electrically connected to the PCB board.

2. The gold finger type rail grounding terminal according to claim 1, characterized in that: The elastic clip structure includes a first clip (1221) and a second clip (1222) in a cantilever structure. The free ends of the first clip and the second clip respectively form V-shaped bending structures with opening directions opposite to each other. The V-shaped bending portions of the first clip and the second clip are in close contact with the gold fingers on the PCB board through the convex spherical surface (1223).

3. The gold finger type rail grounding terminal according to claim 1, characterized in that: [the terminal is provided with...] The guide rail extends in the front-to-back direction, and the guide rail width is in the left-to-right direction. The PCB module, terminal module and guide rail are connected and arranged in the up-down direction. The guide rail includes a U-shaped body (21) and flanges (22) formed by bending the left and right side walls of the U-shaped body outward. Two hooks (112) are provided at intervals on the insulating base of the terminal module. A T-shaped channel is formed between the two hooks. The rail is inserted into the T-shaped channel, and the flanges on both sides of the guide rail are respectively supported on the hooks of the two hooks.

4. The gold finger type rail grounding terminal according to claim 3, characterized in that: The elastic contact portion of the grounding terminal is a cantilever structure extending in the left-right direction, and its free end is in close contact with the left or right flange of the guide rail.

5. The gold finger type rail grounding terminal according to claim 4, characterized in that: The elastic contact portion of the grounding terminal forms a wave-shaped structure by at least two consecutive arc bends from the root to the free end, and the free end of the elastic contact portion of the grounding terminal contacts the guide rail through a convex arc surface.

6. The gold finger type rail grounding terminal according to claim 4, characterized in that: The grounding terminal has at least one slit (1211) extending from its free end toward the root on its elastic contact portion, the slit causing the elastic contact portion to form a multi-lobed structure.

7. The gold finger type rail grounding terminal according to claim 4, characterized in that: The bottom surface of the T-shaped channel formed by the insulating base is provided with a receiving groove (113) that matches the shape of the elastic contact part of the grounding terminal. The elastic contact part of the grounding terminal can be elastically deformed and accommodated in the receiving groove when squeezed by the track.

8. The gold finger type rail grounding terminal according to claim 3, characterized in that: At least one hook on the insulating base is a movable hook that can swing at a set angle or slide a set distance in the left and right direction. The insulating base is also provided with an elastic body (114), which provides an elastic holding force to the movable hook so that the two hooks hold the flipped edges of the guide rail.

9. The gold finger type rail grounding terminal according to claim 1, characterized in that: The grounding terminal also includes a terminal body (123). The elastic clip structure and the elastic contact part are integrally formed on the upper and lower ends of the terminal body, respectively. The front and rear side walls of the terminal body are provided with a first inverted structure (1231), and the left and right front and rear side walls of the terminal body are provided with a second inverted structure (1232). The insulating base of the terminal module is provided with a terminal holding hole (115) that runs through the upper and lower parts. The terminal body is inserted into the terminal holding hole in the insulating base, and the first inverted structure and the second inverted structure on the terminal body are fixedly embedded in the inner side wall of the holding hole in the insulating base.

10. The gold finger type rail grounding terminal according to claim 1, characterized in that: The PCB slot at the other end of the insulating base has slots (1111) on both sides of the PCB slot, and buckles (33) on both sides of the PCB module. When the PCB module is inserted into the PCB slot, the buckles can be inserted into the slots to fix the PCB module to the insulating base. The bottom surface of the PCB slot has a T-shaped protrusion structure (1112) with the upper end smaller than the lower end. A clip slot (1113) is formed in the T-shaped protrusion structure. The elastic clip structure of the grounding terminal is accommodated in the clip slot. The left and right side walls of the upper end of the T-shaped protrusion structure with the smaller size form an opening slot that is directly opposite to the clip slot. The PCB board of the PCB module can be inserted into the opening slot. The lower end of the PCB module has a clearance notch (32) that is directly opposite to the position of its PCB gold fingers. The lower end of the T-shaped protrusion structure on the bottom surface of the PCB slot can be inserted into the clearance notch.

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