Electrical connection device

Abstract

The utility model discloses an electric connection device. The electric connection device is suitable for electrically connecting a flexible circuit board and a rigid circuit board and comprises a supporting structure, a limiting structure and a crimping structure, and the supporting structure is used for placing the rigid circuit board; the limiting structure is suitable for crimping the rigid circuit board on the supporting structure and is provided with a plurality of limiting holes, and the plurality of limiting holes are suitable for accommodating a plurality of electric contact pins on the rigid circuit board in a one-to-one correspondence manner; and the crimping structure covers the limiting structure and is connected with the limiting structure and the supporting structure, and the crimping structure is used for crimping the flexible circuit board on the limiting structure and enabling the plurality of bonding pads on the flexible circuit board to be in one-to-one correspondence contact with the plurality of electric contact pins. According to the technical scheme provided by the utility model, the protection of the flexible board is better, the electric connection effect of the rigid circuit board and the flexible board is more stable and reliable, and the electric connection efficiency and the electric connection effect of the rigid circuit board and the flexible board are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of circuit board processing machinery, and particularly relates to an electric connection device. BACKGROUND

[0002] In many cases in industry and equipment, rigid circuit boards need to be connected with flexible circuit boards (referred to as flexible boards) for electrical signals. Establishing an effective, stable, and repeatedly usable signal connection is of great significance for the continuous operation of the equipment.

[0003] Pogo pins are often welded to rigid circuit boards and make contact with other conductor planes to establish a conductive connection. However, when the pogo pins commonly used in the market are directly in contact with the conductor plane (usually a gold-plated pad) on the flexible circuit board, the pogo pins are easy to damage the gold-plated pad of the flexible circuit board. Moreover, when there are a large number of conductive connections to be established, the dense fixation of the pogo pins is a big problem. SUMMARY

[0004] To solve the above technical problems, the main purpose of the utility model is to provide an electric connection device, which aims to solve the problem that the conductor plane of the flexible board is easily damaged in the traditional connection method, and it is not easy to fix the pogo pins when the number of conductive connections is large.

[0005] To achieve the above purpose, the utility model provides an electric connection device, which is suitable for electrically connecting a flexible circuit board and a rigid circuit board, and comprises:

[0006] A support structure for placing the rigid circuit board thereon;

[0007] A limiting structure adapted to press the rigid circuit board on the support structure and formed with a plurality of limiting holes, the plurality of limiting holes being adapted to one-to-one accommodate a plurality of electric contact pins on the rigid circuit board therein;

[0008] A press structure arranged on the limiting structure and connected with the limiting structure and the support structure, the press structure being used to press a flexible circuit board on the limiting structure and make a plurality of pads on the flexible circuit board one-to-one contact with a plurality of electric contact pins.

[0009] Optionally, the support structure comprises a support plate and a mounting groove arranged on the support plate, one side of the mounting groove is provided with a positioning part, the limiting structure is provided with a first matching part, the press structure is provided with a second matching part, and the positioning part, the first matching part and the second matching part are all positioned and matched to limit the relative displacement of the limiting structure, the press structure and the support plate in the horizontal direction.

[0010] Optionally, the positioning part includes a positioning protrusion protruding from the support plate, the first mating part includes a first positioning hole on the limiting structure, the second mating part includes a second positioning hole on the pressing structure, and the positioning protrusion passes through the first positioning hole and the second positioning hole, and is adapted to pass through the third positioning hole on the rigid circuit board and the fourth positioning hole on the flexible circuit board.

[0011] Optionally, the limiting structure includes a limiting plate, and a plurality of limiting holes are arranged at intervals on the limiting plate, adapted to correspond one-to-one with a plurality of electrical contact pins on a rigid circuit board. The limiting plate is provided with a plurality of first positioning holes, which are located on the outside of the plurality of limiting holes.

[0012] Optionally, each of the electrical contact pins on the rigid circuit board includes a housing and a contact pin, each of the contact pins is elastically telescopically disposed on the housing, the height of each housing is H, and the telescopic amount of each electrical contact pin is S;

[0013] The depth of each of the limiting holes is T, where H≤T≤H+S-0.3mm.

[0014] Optionally, the pressing structure includes a pressing plate and a mounting portion disposed on the pressing plate. The limiting plate is provided with a third mating portion, and the support plate is provided with a fourth mating portion. The mounting portion is connected and mated with both the third mating portion and the fourth mating portion to limit the relative displacement of the support plate, the limiting structure and the pressing plate in the vertical direction.

[0015] Optionally, the mounting part includes a first mounting hole that penetrates the pressing plate, the third mating part includes a second mounting hole that penetrates the limiting plate, and the fourth mating part includes a third mounting hole on the support plate;

[0016] The electrical connection device further includes a connector, which passes through the first mounting hole, the second mounting hole, the third mounting hole and the fourth mounting hole on the rigid circuit board to connect and fix the support plate, the rigid circuit board, the limiting plate and the pressing plate.

[0017] Optionally, the third mounting hole is configured as a blind hole.

[0018] Optionally, there are multiple first mounting holes, multiple second mounting holes, and multiple third mounting holes. The multiple first mounting holes, multiple second mounting holes, and multiple third mounting holes are arranged in a one-to-one correspondence, and the multiple second mounting holes are located outside the multiple first positioning holes.

[0019] Optionally, the support structure has a first buffer layer on the side facing the limiting structure; and / or,

[0020] The crimping structure has a second buffer layer on the side facing the limiting structure.

[0021] The technical solution provided by this utility model has the following beneficial effects:

[0022] The electrical connection device provided by this utility model includes a support structure, a limiting structure, and a pressing structure. The support structure is used to place a rigid circuit board on it. The limiting structure is used to press and fix the rigid circuit board onto the support structure. The limiting structure has multiple limiting holes, which allow multiple electrical contact pins on the rigid circuit board to be accommodated one-to-one. These holes effectively limit the position of each electrical contact pin, ensuring a relatively fixed position. This results in better position control and more accurate alignment when connected to a flexible circuit board, providing better protection for the flexible circuit board. Furthermore, the pressing structure presses the flexible circuit board onto the limiting structure and restricts its relative position, allowing each conductor plane on the flexible circuit board to better connect with each electrical contact pin. This makes the electrical connection between the rigid circuit board and the flexible circuit board more stable and reliable. The device can be reused multiple times, improving the efficiency and effectiveness of the electrical connection between the rigid circuit board and the flexible circuit board. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 A schematic diagram of one embodiment of an electrical connection device (electrically connecting a rigid circuit board and a flexible board) provided by this utility model;

[0025] Figure 2 for Figure 1 A schematic diagram of the structure of the rigid circuit board (including one electrical contact pin) described in the figure;

[0026] Figure 3 for Figure 1 A schematic diagram of the limiting structure described above;

[0027] Figure 4 for Figure 1 A schematic diagram of the supporting structure described herein.

[0028] Explanation of icon numbers:

[0029] 100 - Electrical connection device; 1 - Support structure; 11 - Support plate; 12 - Mounting groove; 13 - Positioning protrusion; 14 - Third mounting hole; 2 - Limiting structure; 21 - Limiting plate; 22 - Limiting hole; 23 - First positioning hole; 24 - Second mounting hole; 3 - Crimping structure; 31 - Crimping plate; 32 - Second positioning hole; 33 - First mounting hole; 200 - Rigid circuit board; 201 - Electrical contact pin; 2011 - Housing; 2012 - Contact pin; 300 - Flexible board; 301 - Solder pad.

[0030] The realization of the purpose, functional characteristics and excellent effects of this utility model will be further explained below in conjunction with specific embodiments and accompanying drawings. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] It should be noted that if the embodiments of this utility model involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0033] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0034] This utility model provides an electrical connection device 100, which is suitable for electrically connecting flexible circuit boards and rigid circuit boards 200. For details, please refer to... Figure 1In this embodiment, the electrical connection device 100 includes a support structure 1, a limiting structure 2, and a pressing structure 3. The support structure 1 is used to place a rigid circuit board 200 thereon. The limiting structure 2 is adapted to press the rigid circuit board 200 onto the support structure 1 and forms a plurality of limiting holes 22, which are adapted to accommodate a plurality of electrical contact pins 201 on the rigid circuit board 200 one by one. The pressing structure 3 is disposed on the limiting structure 2 and is connected to both the limiting structure 2 and the support structure 1. The pressing structure 3 is used to press a flexible circuit board onto the limiting structure 2, so that a plurality of pads 301 on the flexible circuit board make contact with a plurality of electrical contact pins 201 one by one.

[0035] In this embodiment, the support structure 1 is used to place the rigid circuit board 200, and the limiting structure 2 is used to press against the rigid circuit board 200 to fix the rigid circuit board 200 to the support structure 1. Furthermore, the limiting structure 2 is provided with multiple limiting holes 22, through which multiple electrical contact pins 201 on the rigid circuit board 200 can be accommodated one-to-one. Thus, the multiple limiting holes 22 can better limit the position of each electrical contact pin 201, making the position of each electrical contact pin 201 relatively fixed, thereby... When in contact with the flexible board 300, the position is better controlled, the alignment is more accurate, and the protection of the flexible board 300 is better. Moreover, the flexible board 300 can be pressed onto the limiting structure 2 through the pressing structure 3, and the relative position of the flexible board 300 is restricted, so that each conductor plane on the flexible board 300 can be better connected to each electrical contact pin 201. This makes the electrical connection between the rigid circuit board 200 and the flexible board 300 more stable and reliable. In addition, the electrical connection device 100 can be reused multiple times, which improves the electrical connection efficiency and effect between the rigid circuit board 200 and the flexible board 300.

[0036] It should be noted that the rigid circuit board 200 includes a PCB board and a plurality of electrical contact pins 201 disposed on the PCB board. Preferably, it is combined with... Figure 1 and Figure 2 As shown, each of the electrical contact pins 201 is elastically arranged to better contact the flexible circuit board 300. Each of the electrical contact pins 201 includes a housing 2011 and a contact pin 2012. Each contact pin 2012 is elastically telescopically disposed on the housing 2011. Through the elastic telescopic movement of each contact pin 2012, the multiple contact pins 2012 can better contact each conductor plane (such as gold-plated pads 301) on the flexible circuit board 300, ensuring reliable electrical connection between the rigid circuit board 200 and the flexible circuit board.

[0037] When the electrical connection device 100 is in normal use, the support structure 1, the limiting structure 2, and the crimping structure 3 are stacked sequentially from bottom to top, with the support structure 1 at the bottom and the crimping structure 3 at the top. The rigid circuit board 200 is placed between the support structure 1 and the limiting structure 2, and the flexible circuit board is placed between the limiting structure 2 and the crimping structure 3.

[0038] Specifically, in combination Figure 1 and Figure 4 As shown, the support structure 1 includes a support plate 11 and a mounting groove 12 provided on the support plate 11. Preferably, the support plate 11 is generally flat, and the mounting groove 12 is formed on the upper surface of the support plate 11. The rigid circuit board 200 is confined within the groove through the sidewall of the mounting groove 12, thus providing initial positioning for the rigid circuit board 200. Further, a positioning part is provided on one side of the mounting groove 12, a first mating part is provided on the positioning structure 2, and a second mating part is provided on the pressing structure 3. The positioning part is positioned and mated with both the first and second mating parts to limit the relative displacement of the positioning structure 2, the pressing structure 3, and the support plate 11 in the horizontal direction, thereby limiting the relative position of the rigid circuit board 200 and the flexible board 300 in the horizontal direction and ensuring accurate alignment of the electrical contact pins 201 on the rigid circuit board 200 and the solder pads 301 on the flexible board 300.

[0039] Preferably, such as Figure 1 As shown, the positioning part includes a positioning protrusion 13 protruding from the support plate 11, the first mating part includes a first positioning hole 23 on the limiting structure 2, the second mating part includes a second positioning hole 32 on the pressing structure 3, the positioning protrusion 13 passes through the first positioning hole 23 and the second positioning hole 32, and is adapted to pass through the third positioning hole on the rigid circuit board 200 and the fourth positioning hole on the flexible circuit board. When making electrical connections between the rigid circuit board 200 and the flexible board 300, the rigid circuit board 200 can be placed on the support plate 11 first, with the third positioning hole on the rigid circuit board 200 passing through the positioning protrusion 13. Then, the limiting structure 2 is covered, with the second positioning hole 32 on the limiting structure 2 passing through the positioning protrusion 13. Next, the flexible board 300 is placed, with the fourth positioning hole on the flexible board 300 passing through the positioning protrusion 13. Finally, the pressing structure 3 is covered, with the second positioning hole 32 on the pressing structure 3 passing through the positioning protrusion 13. This allows for faster alignment of the rigid circuit board 200, the limiting structure 2, the flexible board 300, and the pressing structure 3 during placement, resulting in higher work efficiency. Furthermore, it ensures more precise relative positions of the rigid circuit board 200 and the flexible board 300.

[0040] Regarding the limiting structure 2, it is used to press against the rigid circuit board 200 and to fix and limit the various electrical contact pins 201 on the rigid circuit board 200. Specifically, in conjunction with Figure 1 and Figure 3 As shown, the limiting structure 2 includes a limiting plate 21, which is generally flat and is positioned in the area of ​​the rigid circuit board 200 where electrical contact pins 201 are located. Multiple limiting holes 22 are spaced apart on the limiting plate 21 and are adapted to correspond one-to-one with the multiple electrical contact pins 201 on the rigid circuit board 200. The multiple limiting holes 22 limit the multiple electrical contact pins 201 individually, preventing accidental contact when there are too many pins, thus improving the stability of the pins 201. The limiting plate 21 has multiple first positioning holes 23 located outside the multiple limiting holes 22. Here, "outer side" refers to the area relative to the limiting plate 21 itself. The center of the limiting plate 21 is the inner side, and the edge area of ​​the limiting plate 21 is the outer side. Multiple first positioning holes 23 are disposed on the outer side of multiple limiting holes 22 to ensure that the edge area of ​​the limiting plate 21 can better form a limiting with the support plate 11, and the positioning protrusion 13 will not interfere with the electrical contact pin 201.

[0041] Furthermore, since each of the electrical contact pins 201 is an elastic element, after the rigid circuit board 200 is pressed by the limiting plate 21, in order to ensure that the contact pins 2012 of each of the electrical contact pins 201 can contact the pads 301 on the flexible board 300, the following measures are taken: Figure 2 As shown, the height of each housing 2011 is defined as H, the extension / retraction amount of each electrical contact pin 201 is defined as S, and the depth of each limiting hole 22 is defined as T, where H≤T≤H+S-0.3mm. The depth of each limiting hole 22 is greater than the height of the housing 2011 to prevent the housing 2011 from being too tall and damaging the flexible circuit board 300. T≤H+S-0.3mm ensures that the contact pins 2012 have sufficient extension / retraction space, guaranteeing that all contact pins 2012 can contact the gold-plated copper pad of the flexible circuit board during pressing, thus ensuring reliable electrical connection.

[0042] The pressing structure 3 includes a pressing plate 31 and a mounting portion disposed on the pressing plate 31. The pressing plate 31 is generally flat. The limiting plate 21 is provided with a third mating portion, and the support plate 11 is provided with a fourth mating portion. The mounting portion is connected and mated with both the third and fourth mating portions to limit the relative displacement of the support plate 11, the limiting structure 21, and the pressing plate 31 in the vertical direction, thereby preventing the pressing plate 31, the limiting plate 21, and the support plate 11 from separating from each other, so that the rigid circuit board 200 and the flexible board 300 remain in electrical contact.

[0043] Preferably, such as Figure 1 As shown, the mounting part includes a first mounting hole 33 penetrating the pressure plate 31, the third mating part includes a second mounting hole 24 penetrating the limiting plate 21, and the fourth mating part includes a third mounting hole 14 on the support plate 11. The electrical connection device 100 also includes a connector, which can be a screw, bolt, or pin, etc. The connector passes through the first mounting hole 33, the second mounting hole 24, the third mounting hole 14, and the fourth mounting hole on the rigid circuit board 200 to connect and fix the support plate 11, the rigid circuit board 200, the limiting plate 21, and the pressure plate 31, so that the support plate 11, the rigid circuit board 200, the limiting plate 21, the flexible plate 300, and the pressure plate 31 are all relatively fixed, and the rigid circuit board 200 and the flexible plate 300 are not easy to move relative to each other, resulting in a better electrical connection effect.

[0044] More preferably, such as Figure 1 As shown, the third mounting hole 14 is set as a blind hole, so that no opening is formed at the bottom of the support plate 11, and external water or debris is not easy to enter between the support plate 11 and the rigid circuit board 200, which can better protect the rigid circuit board 200.

[0045] Furthermore, multiple first mounting holes 33, multiple second mounting holes 24, and multiple third mounting holes 14 are provided. These first mounting holes 33, second mounting holes 24, and third mounting holes 14 are arranged in a one-to-one correspondence, making the connection and fixation between the support plate 11, the limiting plate 21, and the pressing plate 31 more reliable. Additionally, the multiple second mounting holes 24 are located outside the multiple first positioning holes 23, ensuring that the connection points of the support plate 11, the limiting plate 21, and the pressing plate 31 are located close to the edges of each plate, thus ensuring smaller connection gaps at the edges and relatively better sealing.

[0046] In one embodiment, a first buffer layer is provided on the side of the support structure 1 facing the limiting structure 2, and a second buffer layer is provided on the side of the pressing structure 3 facing the limiting structure 2, which makes the contact between the electrical contact pin 201 and the solder pad 301 on the flexible plate 300 more stable.

[0047] Furthermore, the limiting plate 21 can be made of any one of FR4 (FR-4 Epoxy Glass Cloth), polyimide, PMMA (Polymethyl methacrylate), or PC (Polycarbonate). FR4 and polyimide are preferred materials, which improve the high-temperature resistance of the limiting plate 21 and make it less prone to deformation.

[0048] Furthermore, the materials of the support plate 11 and the pressing plate 31 can be aluminum alloy, stainless steel, or fiberglass reinforced plastic sheet, making the support plate 11 and the pressing plate less prone to deformation and better ensuring the flatness of the flexible circuit board 300 and the rigid circuit board 200. Moreover, a reinforcing layer can be added to the side of the flexible circuit board facing away from the gold-plated pads 301 to better protect the flexible circuit board and prevent deformation.

[0049] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structure made using the contents of the present utility model specification and drawings, or directly or indirectly applied to other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. An electrical connection device suitable for electrically connecting flexible circuit boards and rigid circuit boards, characterized in that, include: A support structure for placing rigid circuit boards on top of it; The limiting structure is suitable for pressing a rigid circuit board onto the support structure and has multiple limiting holes, wherein multiple limiting holes are suitable for accommodating multiple electrical contact pins on the rigid circuit board in a corresponding manner. A pressing structure is disposed on the limiting structure and connected to both the limiting structure and the supporting structure. The pressing structure is used to press the flexible circuit board onto the limiting structure, so that multiple pads on the flexible circuit board make contact with multiple electrical contact pins one by one.

2. The electrical connection device as claimed in claim 1, characterized in that, The support structure includes a support plate and a mounting groove on the support plate. A positioning part is provided on one side of the mounting groove. A first mating part is provided on the limiting structure and a second mating part is provided on the pressing structure. The positioning part is positioned and mated with both the first mating part and the second mating part to limit the relative displacement of the limiting structure, the pressing structure and the support plate in the horizontal direction.

3. The electrical connection device as described in claim 2, characterized in that, The positioning part includes a positioning protrusion protruding from the support plate, the first mating part includes a first positioning hole on the limiting structure, the second mating part includes a second positioning hole on the pressing structure, the positioning protrusion passes through the first positioning hole and the second positioning hole, and is adapted to pass through the third positioning hole on the rigid circuit board and the fourth positioning hole on the flexible circuit board.

4. The electrical connection device as claimed in claim 3, characterized in that, The limiting structure includes a limiting plate, and a plurality of limiting holes are arranged at intervals on the limiting plate, which are adapted to correspond one-to-one with a plurality of electrical contact pins on a rigid circuit board. The limiting plate is provided with a plurality of first positioning holes, which are located on the outside of the plurality of limiting holes.

5. The electrical connection device as claimed in claim 4, characterized in that, Each electrical contact pin on the rigid circuit board includes a housing and a contact pin. Each contact pin is elastically extended and retracted on the housing. The height of each housing is H, and the extension and retraction amount of each electrical contact pin is S. The depth of each of the limiting holes is T, where H≤T≤H+S-0.3mm.

6. The electrical connection device as claimed in claim 4, characterized in that, The pressing structure includes a pressing plate and a mounting portion disposed on the pressing plate. The limiting plate is provided with a third mating portion, and the support plate is provided with a fourth mating portion. The mounting portion is connected and mated with both the third mating portion and the fourth mating portion to limit the relative displacement of the support plate, the limiting structure and the pressing plate in the vertical direction.

7. The electrical connection device as claimed in claim 6, characterized in that, The mounting part includes a first mounting hole that penetrates the pressing plate, the third mating part includes a second mounting hole that penetrates the limiting plate, and the fourth mating part includes a third mounting hole provided on the support plate; The electrical connection device further includes a connector, which passes through the first mounting hole, the second mounting hole, the third mounting hole and the fourth mounting hole on the rigid circuit board to connect and fix the support plate, the rigid circuit board, the limiting plate and the pressing plate.

8. The electrical connection device as claimed in claim 7, characterized in that, The third mounting hole is configured as a blind hole.

9. The electrical connection device as claimed in claim 7, characterized in that, The first mounting hole is provided in multiple ways, the second mounting hole is provided in multiple ways, and the third mounting hole is also provided in multiple ways. The multiple first mounting holes, the multiple second mounting holes and the multiple third mounting holes are all arranged in a one-to-one correspondence, and the multiple second mounting holes are located outside the multiple first positioning holes.

10. The electrical connection device as claimed in claim 1, characterized in that, The supporting structure has a first buffer layer on the side facing the limiting structure; and / or The pressing structure has a second buffer layer on the side facing the limiting structure.

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