Golden finger type guide rail grounding terminal

Abstract

A golden finger type guide rail grounding terminal disclosed by the present invention comprises a terminal module, a guide rail and a PCB module, the terminal module comprises an insulating base and a grounding terminal, one end of the insulating base can be slidably sleeved on the guide rail made of a conductive material, the other end of the insulating base is provided with a PCB slot for plugging of the PCB module, the PCB module is provided with a PCB with a golden finger, and the terminal module is provided with a grounding terminal. An elastic contact part which can elastically abut against the surface of the guide rail and is electrically connected with the guide rail is formed at one end of the grounding terminal fixedly installed in the insulation base, and an elastic clamping piece structure which can clamp golden fingers on the PCB in a one-to-one correspondence mode and is further electrically connected with the PCB is formed at the other end of the grounding terminal. 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] The invention relates to the technical field of connectors, and in particular to a gold finger type guide rail grounding terminal. Background Art

[0002] On the common track-type connector modules currently, the grounding terminals are connected by keeping close contact with the track made of conductive material through an elastic structure. At the same time, the grounding terminals are also welded on the PCB board to achieve the grounding function. The grounding terminal structure of this structure makes the grounding terminal of the connector and the PCB board form an integrated structure after welding. The two cannot be separated, which makes it inconvenient to replace different PCB boards to achieve different functions. In addition, the grounding terminal and the PCB board are inconvenient to assemble because they need to be welded. Summary of the invention

[0003] In order to make up for the above shortcomings, the present invention provides a gold finger type guide rail grounding terminal, one end of which contacts the track through an elastic contact portion, and the other end clamps the PCB through an elastic clip structure, thereby realizing the grounding function. At the same time, it is quick to install and does not require welding.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a gold finger type guide rail grounding terminal, comprising a terminal module, a guide rail and a PCB module, the terminal module comprising 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, the other end of the insulating base is formed with 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 is formed with an elastic contact portion, the other end of the grounding terminal is formed with an elastic clip structure, the elastic contact portion at one end of the grounding terminal can elastically press against the surface of the guide rail and be electrically conductive with the guide rail, and 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 thus be electrically conductive with the PCB board.

[0005] As a further improvement of the present invention, the elastic clip structure includes a first clip and a second clip in a cantilever structure, and the free ends of the first clip and the second clip respectively form a V-shaped bending structure with opening directions opposite to each other, and the V-shaped bending parts 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 the present invention, the guide rail extending direction is the front-to-back direction, the guide rail width direction is the left-to-right direction, the PCB module, the terminal module and the guide rail are sequentially connected and arranged in the up-down direction, the guide rail includes a U-shaped main body and flanges formed by bending the left and right side walls of the U-shaped main body outward, two hooks are provided on the insulating base of the terminal module at intervals, a T-shaped channel is formed between the two hooks, the track is inserted into the T-shaped channel, and the flanges on both sides of the guide rail are respectively supported on the hook bodies of the two hooks.

[0007] As a further improvement of the present invention, 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 flange or the right flange of the guide rail.

[0008] As a further improvement of the present invention, the elastic contact portion of the grounding terminal undergoes at least two continuous arc bends from the root to the free end to form a wavy structure, 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 the present invention, the elastic contact portion of the ground terminal is provided with at least one cutout slit extending from its free end toward the root, and the cutout slit enables the elastic contact portion to form a multi-petal structure.

[0010] As a further improvement of the present invention, a receiving groove matching the shape of the elastic contact portion of the grounding terminal is provided on the bottom surface of the T-shaped channel formed by the insulating base, and the elastic contact portion of the grounding terminal can be elastically deformed and accommodated in the receiving groove under the pressure of the track.

[0011] As a further improvement of the present invention, at least one hook on the insulating base is a movable hook that can swing to a set angle in the left and right directions or slide a set distance in the left and right directions. An elastomer is also provided on the insulating base, and the elastomer provides an elastic retaining force to the movable hook so that the two hooks maintain a state of supporting the flanges on both sides of the guide rail.

[0012] As a further improvement of the present invention, the grounding terminal also includes a terminal body, the elastic clip structure and the elastic contact part are respectively integrally formed at the upper and lower ends of the terminal body, 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 and right front and rear directions of the terminal body, and the insulating base of the terminal module is provided with a terminal holding hole that passes through from top to bottom, 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 position with the inner side wall of the holding hole in the insulating base.

[0013] As a further improvement of the present invention, card slots are provided on both side walls of the PCB slot at the other end of the insulating base, and buckles are provided on both side walls of the PCB module. When the PCB module is inserted into the PCB slot, the buckles can be snapped into the card slots to achieve a fixed connection between the PCB module and the insulating base. A T-shaped protrusion structure with an upper end size smaller than a lower end size is provided on the bottom surface of the PCB slot. 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, and the left and right side walls of the upper end with a small size of the T-shaped protrusion structure form an open slot facing the clip slot. The PCB board of the PCB module can be inserted into the open slot. The lower end of the PCB module is provided with an avoidance notch facing the position of its PCB gold finger, and the lower end of the T-shaped protrusion structure on the bottom surface of the PCB slot can be inserted into the avoidance notch.

[0014] The beneficial technical effect of the present invention is as follows: the present invention designs the grounding terminal to be an elastic contact portion with a cantilever structure at one end and an elastic clip structure at the other end, and the elastic contact portion is tightly pressed against the surface of the guide rail to be electrically connected with the guide rail, and the gold finger on the PCB board is clamped by the elastic clip structure to be electrically connected with the PCB board, thereby realizing the grounding function while avoiding the grounding terminal being welded to the PCB board, so that the terminal module and the PCB module are easy and quick to install, and different PCB modules can be replaced and used. The clamping mouth of the elastic clip structure of the grounding terminal is also designed to be a spherical surface, which has a better contact and support effect with the gold finger of the PCB board. The elastic contact portion of the grounding terminal is designed to be a double arc design extending left and right, which can compress the space and has good anti-fatigue performance. At the same time, the elastic contact portion of the ground terminal forms a multi-petal design, which can ensure the reliability of contact with the guide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional exploded view of the present invention;

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

[0017] Figure 3 A perspective view of the present invention;

[0018] Figure 4 for Figure 3 Enlarged view of middle part B;

[0019] Figure 5 This is a diagram showing the elastic contact state between the ground terminal and the guide rail;

[0020] Figure 6 This is a cross-sectional view of the ground terminal and the PCB board clamped state;

[0021] Figure 7 is a first stereoscopic view of the ground terminal of the present invention;

[0022] Figure 8 is a second stereoscopic view of the ground terminal of the present invention;

[0023] Fig. 9 It is a third stereoscopic view of the ground terminal of the present invention. DETAILED DESCRIPTION

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

[0025] Embodiment: A gold finger type guide rail grounding terminal comprises a terminal module 1, a guide rail 2 and a PCB module 3, wherein the terminal module 1 comprises an insulating base 11 and a grounding terminal 12, wherein one end of the insulating base 11 can be slidably mounted on the guide rail 2 made of a conductive material, and a PCB slot 111 is formed at the other end of the insulating base 11, wherein the PCB module 3 can be inserted into the PCB slot 111 at the other end of the terminal module 1, and a PCB board 31 with gold fingers is provided on the PCB module 3, wherein the grounding terminal 12 is fixedly installed in the insulating base 11, wherein one end of the grounding terminal 12 is formed with an elastic contact portion 121, and the other end of the grounding terminal 12 is formed with an elastic clip structure 122, wherein the elastic contact portion 121 at one end of the grounding terminal 12 can elastically press against the surface of the guide rail 2 and be electrically connected with the guide rail 2, and the elastic clip structure 122 at the other end of the grounding terminal 12 can clamp the gold fingers on the PCB board 31 one by one and thereby be electrically connected with the PCB board 31.

[0026] During assembly, the terminal module 1 can be slidably installed 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 portion 121 at one end of the grounding terminal 12 of the terminal module 1 is tightly against the surface of the guide rail 2 and thus connected to 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 finger on the PCB board 31 and then connects to the grounding circuit of the PCB board 31. In this way, the grounding function is achieved while avoiding the welding of the grounding terminal 12 and the PCB board 31. The electrical connection between the grounding terminal 12 and the PCB board 31 can be completed with just one plug, which realizes quick installation and facilitates the replacement of different PCB modules 3.

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

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

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

[0030] The elastic contact portion 121 of the ground terminal 12 is bent into a wave-shaped structure through at least two consecutive arcs from the root to the free end, and the free end of the elastic contact portion 121 of the ground 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 the space and has a good anti-fatigue effect.

[0031] The elastic contact portion 121 of the ground terminal 12 is provided with at least one cutout slit 1211 extending from its free end toward the root, and the cutout slit 1211 enables the elastic contact portion 121 to form a multi-petal structure. The multi-petal design can ensure the contact reliability 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 pressed by the rail. The space is further compressed, and the elastic deformation ability of the elastic contact portion 121 is guaranteed, so that it is in close contact with the guide rail 2.

[0033] At least one hook 112 on the insulating base 11 is a movable hook 112 that can swing to a set angle in the left-right direction or slide to a set distance in the left-right direction. The insulating base 11 is also provided with an elastic body 114, which provides elastic holding force to the movable hook 112 so that the two hooks 112 maintain the state of supporting the flanges 22 on both sides of the guide rail 2. The lower end of the hook 112 is preferably formed with a guiding inclined surface to facilitate the guide rail 2 to be installed into the T-shaped channel from bottom to top, and when the guide rail 2 is installed, the movable hook 112 can be pressed and yielded, and after the guide rail 2 is installed, the movable hook 112 can automatically reset.

[0034] The grounding terminal 12 further includes a terminal body 123, the elastic clip structure 122 and the elastic contact portion 121 are integrally formed at the upper and lower ends of the terminal body 123, a first inverted structure 1231 is provided on the two side walls of the terminal body 123 in the front and rear directions, and a second inverted structure 1232 is provided on the side walls of the terminal body 123 in the left and right front and rear directions. The insulating base 11 of the terminal module 1 is provided with a terminal holding hole 115 that passes through from top to bottom, 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 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 or stuck in the side wall of the holding hole 115 to achieve fixed positioning of the grounding terminal 12 on the insulating base 11.

[0035] A card slot 1111 is provided on both side walls of the PCB slot 111 at the other end of the insulating base 11, and a buckle 33 is provided on both side walls of the PCB module 3. When the PCB module 3 is inserted into the PCB slot 111, the buckle 33 can be inserted into the card slot 1111 to realize the fixed connection between the PCB module 3 and the insulating base 11. A T-shaped protrusion structure 1112 whose upper end size is smaller than the lower end size is provided on the bottom surface of the PCB slot 111, and a clip slot 111 is formed in the T-shaped protrusion structure 1112. 3. The elastic clip structure 122 of the grounding terminal 12 is accommodated in the clip slot 1113, and the left and right side walls of the upper end of the T-shaped protrusion structure 1112 with a small size form an open slot facing the clip slot 1113, and the PCB board 31 of the PCB module 3 can be inserted into the open slot. The lower end of the PCB module 3 is provided with an avoidance notch 32 facing the position of its PCB gold finger, and the lower end of the T-shaped protrusion structure 1112 on the bottom surface of the PCB slot 111 can be inserted into the avoidance 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 the two side walls of the PCB module 3 are inserted into the card grooves 1111 of the insulating base 11 to achieve a fixed connection between the PCB module 3 and the terminal module 1. At the same time, the lower end of the T-shaped protrusion structure 1112 is accommodated in the avoidance notch 32 at the lower end of the PCB module 3, and stops at the lower end of the PCB board 31, so as to limit the insertion depth of the PCB module 3 and prevent damage to the PCB board 31.

Claims

1. A gold finger type rail grounding terminal, characterized in that: The invention comprises a terminal module (1), a guide rail (2) and a PCB module (3), wherein the terminal module comprises an insulating base (11) and a grounding terminal (12), wherein one end of the insulating base can be slidably mounted on the guide rail made of a conductive material, and the other end of the insulating base is formed with a PCB slot (111), and the PCB module can be inserted into the PCB slot at the other end of the terminal module, and the PCB module is provided with a PCB board (31) with a gold finger, and the grounding terminal is fixedly installed in the insulating base, and one end of the grounding terminal is formed with an elastic contact portion (121), and the other end of the grounding terminal is formed with an elastic clip structure (122), the elastic contact portion 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, and the elastic clip structure at the other end of the grounding terminal can clamp the gold finger on the PCB board one by one and thus 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 comprises 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 forming V-shaped bending structures with opening directions opposite to each other, and the V-shaped bending parts 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 is characterized in that: The guide rail extends in a front-to-back direction, the guide rail width direction is a left-to-right direction, the PCB module, the terminal module and the guide rail are sequentially connected and arranged in an up-down direction, the guide rail comprises a U-shaped main body (21) and flanges (22) formed by bending the left and right side walls of the U-shaped main body outward, two hooks (112) are arranged 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 hook bodies 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 a free end of the cantilever structure is in close contact with the left flange or the 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 is bent into a wave-shaped structure through at least two consecutive arcs 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 elastic contact portion of the grounding terminal is provided with at least one cutout slit (1211) extending from its free end toward the root, and the cutout slit enables the elastic contact portion to form a multi-petal 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) matching the shape of the elastic contact portion of the grounding terminal. The elastic contact portion of the grounding terminal can be elastically deformed and received in the receiving groove under the pressure of 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 to a set angle in the left and right directions or slide to a set distance in the left and right directions. The insulating base is also provided with an elastic body (114), which provides elastic holding force to the movable hook so that the two hooks maintain a state of supporting the flanges on both sides 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 respectively integrally formed at the upper and lower ends of the terminal body, a first inverted structure (1231) is provided on the side walls in the front and rear directions of the terminal body, and a second inverted structure (1232) is provided on the side walls in the left and right front and rear directions of the terminal body, and a terminal retaining hole (115) is provided in the insulating base of the terminal module that passes through the upper and lower parts, the terminal body is inserted into the terminal retaining hole in the insulating base, and the first inverted structure and the second inverted structure on the terminal body are fixedly embedded in position with the inner side wall of the retaining hole in the insulating base.

10. The gold finger type rail grounding terminal according to claim 1, characterized in that: A card slot (1111) is provided on both side walls of the PCB slot at the other end of the insulating base, and a card buckle (33) is provided on both side walls of the PCB module. When the PCB module is inserted into the PCB slot, the card buckle can be snapped into the card slot to achieve fixed connection between the PCB module and the insulating base. A T-shaped protrusion structure (1112) whose upper end size is smaller than the lower end size is provided on the bottom surface of the PCB slot. 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, and the left and right side walls of the upper end with a smaller size of the T-shaped protrusion structure form an open slot directly opposite to the clip slot. The PCB board of the PCB module can be inserted into the open slot. The lower end of the PCB module is provided with an avoidance notch (32) directly opposite to the position of its PCB gold finger, and the lower end of the T-shaped protrusion structure on the bottom surface of the PCB slot can be inserted into the avoidance notch.

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