Connecting device

Abstract

The utility model provides a connecting device, which is suitable for connecting a first circuit board and a second circuit board and comprises a first connecting piece and a second connecting piece, a plurality of contact pins, each contact pin is arranged on the first connecting piece, and the first end of each contact pin is electrically connected with the first connecting piece; wherein the plurality of contact pins and the plurality of planar electrodes on the second circuit board are arranged in a one-to-one correspondence manner, and the second circuit board is pressed on the plurality of contact pins, so that the second end of each contact pin is abutted against the corresponding planar electrode, and the second circuit board is electrically connected with the first connecting piece. According to the utility model, the problem of low replacement efficiency of a movable circuit board in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board connection, in particular to a connection device. Background Art

[0002] During circuit installation and debugging, it is usually necessary to electrically connect a movable circuit board with a fixed circuit board to achieve circuit connectivity. When there are fewer contacts on the two circuit boards, the connection between the two circuit boards can be completed by using a pin header and a female header. The specific process is as follows: multiple pins of the pin header are plugged or welded to the movable circuit board, and multiple pins of the female header are plugged or welded to the fixed circuit board. The connection between the two circuit boards is achieved by plugging the pin header and the female header.

[0003] However, when there are hundreds of contacts on the two circuit boards, it is necessary to connect the hundreds of pins of the pin header to the movable circuit board, and then insert the hundreds of pins of the pin header into the hundreds of connecting holes of the female header for connection; when the movable circuit board needs to be replaced, it is necessary to separate the pin header from the female header, and then separate the pin header from the movable circuit board, and then connect the pin header to the new movable circuit board, and continue to repeat the above steps, which makes the replacement of the movable circuit board very time-consuming and labor-intensive, and further leads to low replacement efficiency of the movable circuit board. Utility Model Content

[0004] The main purpose of the utility model is to provide a connecting device to solve the problem of low replacement efficiency of movable circuit boards in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a connecting device suitable for connecting a first circuit board and a second circuit board, the connecting device comprising: a first connecting member, the first connecting member is used to be electrically connected to the first circuit board; a plurality of pins, each of which is arranged on the first connecting member, and the first end of each pin is electrically connected to the first connecting member; wherein the plurality of pins and the plurality of planar electrodes on the second circuit board are arranged one by one correspondingly, and the second circuit board is pressed onto the plurality of pins so that the second end of each pin abuts against the corresponding planar electrode, so that the second circuit board and the first connecting member are electrically connected.

[0006] Furthermore, the second circuit board is a mobile circuit board, the first circuit board is a fixed circuit board, a positioning piece is provided on the fixed circuit board, a positioning groove is provided on the mobile circuit board, and the positioning piece is inserted into the positioning groove to position the mobile circuit board.

[0007] Furthermore, each pin includes a fixed end and a movable end, and the fixed end and the movable end are relatively arranged along the extension direction of the pin. The movable end is movably arranged relative to the fixed end. The fixed end is electrically connected to the first connecting member, and the movable end is used to abut against the corresponding planar electrode on the mobile circuit board to electrically connect the pin and the mobile circuit board.

[0008] Furthermore, each pin includes a fixed part and a movable part, one end of the movable part is used to form the movable end, and the end of the fixed part away from the movable part is used to form the fixed end, the movable part and the fixed part are connected, at least part of the movable part is movably arranged relative to the fixed part, and at least part of the fixed part is inserted into the first connecting member to electrically connect the fixed end and the first connecting member.

[0009] Furthermore, each pin also includes an elastic member, which is arranged in the fixed part, one end of the elastic member is connected to the movable part, and the other end of the elastic member is connected to the inner wall of the fixed part. When the movable end of each pin abuts against the corresponding planar electrode of the movable circuit board, the elastic member undergoes elastic deformation to keep the movable end in abutment with the movable circuit board.

[0010] Furthermore, the movable part of each pin is made of elastic material. When the movable end of each pin abuts against the corresponding planar electrode of the movable circuit board, the movable end moves toward the direction close to the fixed end to cause the movable part to undergo elastic deformation so that the movable end remains in abutment with the movable circuit board.

[0011] Furthermore, the connecting device also includes a fixing member extending in a vertical direction, the fixing member is arranged on the first connecting member, and at least a portion of each pin is inserted into the fixing member so that the fixing member fixes each pin.

[0012] Furthermore, a plurality of through holes are provided on the fixing member, and the plurality of through holes and the plurality of pins are provided in one-to-one correspondence, at least a portion of each pin is inserted into the corresponding through hole, and the movable end of each pin extends out of the corresponding through hole to abut against the corresponding planar electrode of the mobile circuit board.

[0013] Furthermore, each through hole includes a first hole segment and a second hole segment, the aperture of the second hole segment is larger than the aperture of the first hole segment, the fixed portion of each pin is inserted into the second hole segment of the corresponding through hole, and at least part of the movable portion of each pin is inserted into the corresponding first hole segment.

[0014] Furthermore, the connecting device includes a plurality of pin groups, which are arranged on the first connecting member at intervals along the extension direction of the first connecting member, and each pin group includes a plurality of pins, which are arranged at intervals along a preset direction; wherein the preset direction is arranged perpendicular to the extension direction of the first connecting member.

[0015] By applying the technical solution of the utility model, the connecting device includes a first connecting member and a plurality of pins, the first connecting member and the first circuit board are electrically connected, one end of each pin is electrically connected to the first connecting member, and the other end of each pin abuts against the corresponding planar electrode on the second circuit board, so that each pin is electrically connected to the second circuit board, and then the first connecting member and the second circuit board are electrically connected, thereby realizing the electrical connection between the two circuit boards. When the second circuit board needs to be replaced, it is only necessary to pull the second circuit board off the plurality of pins, and then press the new second circuit board onto the plurality of pins to complete the replacement of the circuit board. There is no need to connect and separate the pin header and the mother header multiple times, which reduces the replacement time of the circuit board and improves the replacement efficiency of the circuit board, thereby solving the problem of low replacement efficiency of the movable circuit board in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 An exploded schematic diagram of the assembly of the connection device and two circuit boards according to the utility model is shown;

[0018] Figure 2 A schematic structural diagram showing a first angle of a fixing member of a connecting device according to the utility model;

[0019] Figure 3 A schematic structural diagram of a second angle of the fixing member of the connecting device according to the utility model is shown.

[0020] The above drawings include the following reference numerals:

[0021] 1. Mobile circuit board; 2. Fixed circuit board; 3. Connecting hole; 4. Planar electrode; 10. First connecting piece; 20. Insertion pin; 21. Movable end; 22. Fixed part; 23. Movable part; 30. Positioning piece; 31. Positioning groove; 40. Fixed piece; 41. Through hole; 411. First hole section; 412. Second hole section. DETAILED DESCRIPTION

[0022] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0023] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0024] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0025] Please refer to Figures 1 to 3 The utility model provides a connecting device suitable for connecting a first circuit board and a second circuit board, the connecting device comprising: a first connecting member 10, the first connecting member 10 is used to be electrically connected to the first circuit board; a plurality of pins 20, each of which is arranged on the first connecting member 10, and the first end of each of the pins 20 is electrically connected to the first connecting member 10; wherein the plurality of pins 20 and the plurality of planar electrodes 4 on the second circuit board are arranged one by one correspondingly, and the second circuit board is pressed onto the plurality of pins so that the second end of each of the pins 20 abuts against the corresponding planar electrode 4, so that the second circuit board and the first connecting member 10 are electrically connected.

[0026] The connecting device of the utility model includes a first connecting member 10 and a plurality of pins 20. The first connecting member 10 is electrically connected to the first circuit board. One end of each pin 20 is electrically connected to the first connecting member 10, and the other end of each pin 20 abuts against the corresponding planar electrode 4 on the second circuit board, so that each pin 20 is electrically connected to the second circuit board, and then the first connecting member 10 and the second circuit board are electrically connected, thereby realizing the electrical connection between the two circuit boards. When the second circuit board needs to be replaced, it is only necessary to pull the second circuit board off the plurality of pins 20, and then press the new second circuit board onto the plurality of pins 20 to complete the replacement of the circuit board. It is no longer necessary to connect and separate the pin header and the female header multiple times, which reduces the replacement time of the circuit board and improves the replacement efficiency of the circuit board, thereby solving the problem of low replacement efficiency of the movable circuit board in the prior art.

[0027] Specifically, the first connector 10 is a 50X2 pin female header with a spacing of 1.27mm and a plastic height of 4.4mm. The first connector 10 is provided with a plurality of pins, and the plurality of pins are inserted into a plurality of connection holes 3 of a circuit board to electrically connect the first connector 10 to the first circuit board. The number of the pins 20 is 100, and the connection device of the utility model is suitable for connecting a second circuit board with 100 planar electrodes 4 and a first circuit board with 100 connection holes.

[0028] In this embodiment, if Figure 1 As shown, the second circuit board is a mobile circuit board 1, the first circuit board is a fixed circuit board 2, a positioning piece 30 is provided on the fixed circuit board 2, a positioning groove 31 is provided on the mobile circuit board 1, and the positioning piece 30 is inserted into the positioning groove 31 to position the mobile circuit board 1.

[0029] Specifically, the mobile circuit board 1 is a circuit board that needs to be replaced. The positioning piece 30 is inserted into the positioning groove 31 to position the mobile circuit board 1, so as to position the multiple planar electrodes 4 on the mobile circuit board 1, thereby ensuring that the multiple planar electrodes 4 and the multiple pins 20 are aligned one by one, thereby ensuring that the mobile circuit board 1 can be smoothly electrically connected to the multiple pins 20, further improving the replacement efficiency of the mobile circuit board 1.

[0030] Specifically, the fixed circuit board 2 is a PCB board; the movable circuit board 1 is a PCB board or other substrate board with circuits etched thereon;

[0031] In this embodiment, if Figure 1As shown, each pin 20 includes a fixed end and a movable end 21, and the fixed end and the movable end 21 are relatively arranged along the extension direction of the pin 20. The movable end 21 is movably arranged relative to the fixed end. The fixed end is electrically connected to the first connecting member 10, and the movable end 21 is used to abut against the corresponding planar electrode 4 on the mobile circuit board 1 to electrically connect the pin 20 and the mobile circuit board 1.

[0032] Specifically, the fixed end of the pin 20 is electrically connected to the first connecting member 10, and the movable end of the pin 20 is electrically connected to the mobile circuit board 1, so that the first connecting member 10 and the mobile circuit board 1 can be electrically connected through the pin 20, thereby ensuring the reliability of the electrical connection between the mobile circuit board 1 and the fixed circuit board 2.

[0033] In this embodiment, if Figure 1 As shown, each pin 20 includes a fixed portion 22 and a movable portion 23, one end of the movable portion 23 is used to form a movable end 21, and an end of the fixed portion 22 away from the movable portion 23 is used to form a fixed end, the movable portion 23 is connected to the fixed portion 22, at least a portion of the movable portion 23 is movably arranged relative to the fixed portion 22, and at least a portion of the fixed portion 22 is inserted into the first connector 10 to electrically connect the fixed end and the first connector 10.

[0034] Specifically, the fixed part 22 is used to connect the movable part 23 and the first connecting member 10, so that the first connecting member 10 and the pin 20 are electrically connected, and the movable part 23 is used to connect the fixed part 22 and the mobile circuit board 1, so that the mobile circuit board 1 and the pin 20 are electrically connected, and then the mobile circuit board 1 and the first connecting member 10 are electrically connected.

[0035] In this embodiment, not shown in the figure, each pin 20 also includes an elastic member, which is arranged in the fixed part 22, one end of the elastic member is connected to the movable part 23, and the other end of the elastic member is connected to the inner wall of the fixed part 22. When the movable end 21 of each pin 20 abuts against the corresponding planar electrode 4 of the mobile circuit board 1, the elastic member undergoes elastic deformation to keep the movable end 21 abutting against the mobile circuit board 1.

[0036] Specifically, when the movable end 21 of each pin 20 abuts against the corresponding planar electrode 4 of the mobile circuit board 1, the elastic member undergoes elastic deformation so that the elastic member is filled with elastic force, and the elastic member presses the movable part 23 upward, so that the movable end 21 remains in contact with the mobile circuit board 1, avoiding separation of the movable end 21 and the mobile circuit board 1, resulting in the inability to achieve electrical connection between the mobile circuit board 1 and the first connecting member 10, thereby ensuring the reliability of the electrical connection between the mobile circuit board 1 and the fixed circuit board 2.

[0037] Specifically, the elastic member is a spring.

[0038] In this embodiment, not shown in the figure, the movable part 23 of each pin 20 is made of elastic material. When the movable end 21 of each pin 20 abuts against the corresponding planar electrode 4 of the mobile circuit board 1, the movable end 21 moves toward the direction close to the fixed end to cause the movable part 23 to undergo elastic deformation, so that the movable end 21 remains in abutment with the mobile circuit board 1.

[0039] Specifically, since the movable part 23 of each pin 20 is made of elastic material, it is ensured that when the movable end 21 of each pin 20 abuts against the corresponding planar electrode 4 of the mobile circuit board 1, the mobile circuit board 1 can squeeze the movable part 23, so that the movable part 23 undergoes elastic deformation and is filled with elastic force, so that the movable part 23 can squeeze the mobile circuit board 1 upward, thereby keeping the movable end 21 and the mobile circuit board 1 in abutment.

[0040] Specifically, an elastic material refers to a material that will deform under the action of an external force but can return to its original state after the external force is removed.

[0041] In this embodiment, if Figures 2 to 3 As shown, the connecting device also includes a fixing member 40 extending in the vertical direction. The fixing member 40 is arranged on the first connecting member 10 , and at least a portion of each pin 20 is inserted into the fixing member 40 so that the fixing member 40 fixes each pin 20 .

[0042] Specifically, the fixing member 40 is used to constrain multiple pins 20 to ensure that each pin 20 extends in the vertical direction, thereby preventing a pin 20 from falling over, causing the pin 20 to be unable to smoothly abut against the planar electrode 4 of the mobile circuit board 1, causing part of the circuit on the mobile circuit board 1 to fail, thereby ensuring the reliability of the electrical connection between the mobile circuit board 1 and the fixed circuit board 2.

[0043] In this embodiment, if Figures 2 to 3 As shown, a plurality of through holes 41 are provided on the fixing member 40, and the plurality of through holes 41 and the plurality of pins 20 are provided in one-to-one correspondence, at least a portion of each pin 20 is inserted into the corresponding through hole 41, and the movable end 21 of each pin 20 extends out of the corresponding through hole 41 to abut against the corresponding planar electrode 4 of the mobile circuit board 1.

[0044] Specifically, by at least partially passing each pin 20 through the corresponding through hole 41, each through hole 41 can constrain the corresponding pin 20 to ensure that the corresponding pin 20 extends in the vertical direction and that the corresponding pin 20 can smoothly abut against the planar electrode 4 of the mobile circuit board 1. At the same time, the movable end 21 of each pin 20 extends out of the corresponding through hole 41, which can prevent the fixing part 40 from interfering with the movable end 21 and affecting the electrical connection between the movable end 21 and the mobile circuit board 1.

[0045] In this embodiment, if Figures 2 to 3 As shown, each through hole 41 includes a first hole segment 411 and a second hole segment 412, the aperture of the second hole segment 412 is larger than the aperture of the first hole segment 411, the fixed portion 22 of each pin 20 is inserted into the second hole segment 412 of the corresponding through hole 41, and at least part of the movable portion 23 of each pin 20 is inserted into the corresponding first hole segment 411.

[0046] Specifically, since the diameter of the fixed portion 22 of the pin 20 is larger than the diameter of the movable portion 23 of the pin 20, by setting the aperture of the second hole segment 412 to be larger than the aperture of the first hole segment 411, the second hole segment 412 and the fixed portion 22 of the pin 20 are fully fitted, ensuring that the second hole segment 412 can fully constrain the fixed portion 22 of the pin 20; the first hole segment 411 can fully fit the movable portion 23 of the pin 20, ensuring that the first hole segment 411 can fully constrain the movable portion 23 of the pin 20, further ensuring the fixation reliability of the fixing member 40 for each pin 20.

[0047] In a specific implementation, in order to reduce the production cost of the fixing member 40 , the diameters of the first hole segment 411 and the second hole segment 412 may be the same, and the circumferential side wall of the second hole segment 412 and the fixing portion 22 are fully fitted.

[0048] Specifically, the height of the fixing member 40 is 5.6 mm, 100 through holes 41 are provided on the fixing member 40, the interval between each through hole 41 is 1.27 mm, and the aperture of each through hole 41 is 0.6 mm.

[0049] In this embodiment, if Figure 1 As shown, the connecting device includes a plurality of pin groups, which are arranged on the first connecting member 10 at intervals along the extension direction of the first connecting member 10, and each pin group includes a plurality of pins, which are arranged at intervals along a preset direction; wherein the preset direction is arranged perpendicular to the extension direction of the first connecting member 10.

[0050] Specifically, the connecting device includes 50 pin groups, each pin group includes 2 pins, and the connecting device includes a total of 100 pins 20. The diameter of the fixed part 22 is 0.48 mm and the axial length is 10 mm; the diameter of the movable part 23 is 0.35 mm and the axial length is 2 mm.

[0051] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0052] The connecting device of the utility model includes a first connecting member 10 and a plurality of pins 20. The first connecting member 10 is electrically connected to the first circuit board. One end of each pin 20 is electrically connected to the first connecting member 10, and the other end of each pin 20 abuts against the corresponding planar electrode 4 on the second circuit board, so that each pin 20 is electrically connected to the second circuit board, and then the first connecting member 10 and the second circuit board are electrically connected, thereby realizing the electrical connection between the two circuit boards. When the second circuit board needs to be replaced, it is only necessary to pull the second circuit board off the plurality of pins 20, and then press the new second circuit board onto the plurality of pins 20 to complete the replacement of the circuit board. It is no longer necessary to connect and separate the pin header and the female header multiple times, which reduces the replacement time of the circuit board and improves the replacement efficiency of the circuit board, thereby solving the problem of low replacement efficiency of the movable circuit board in the prior art.

[0053] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0054] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0055] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A connecting device, suitable for connecting a first circuit board and a second circuit board, characterized in that: The connecting device comprises: A first connecting member (10), the first connecting member (10) being used for being electrically connected to the first circuit board; a plurality of plug pins (20), each of the plug pins (20) being arranged on the first connecting member (10), and a first end of each of the plug pins (20) being electrically connected to the first connecting member (10); The plurality of plug pins (20) and the plurality of planar electrodes (4) on the second circuit board are arranged in one-to-one correspondence, and the second circuit board is pressed onto the plurality of plug pins (20) so that the second end of each of the plug pins (20) abuts against the corresponding planar electrode (4), so that the second circuit board and the first connector (10) are electrically connected.

2. The connection device according to claim 1, characterized in that: The second circuit board is a mobile circuit board (1), the first circuit board is a fixed circuit board (2), a positioning piece (30) is provided on the fixed circuit board (2), a positioning groove (31) is provided on the mobile circuit board (1), and the positioning piece (30) is inserted into the positioning groove (31) to position the mobile circuit board (1).

3. The connection device according to claim 2, characterized in that: Each of the plug pins (20) comprises a fixed end and a movable end (21), wherein the fixed end and the movable end (21) are arranged relative to each other along the extension direction of the plug pin (20), and the movable end (21) is movably arranged relative to the fixed end, the fixed end is electrically connected to the first connecting member (10), and the movable end (21) is used to abut against the corresponding planar electrode (4) on the mobile circuit board (1) so as to electrically connect the plug pin (20) and the mobile circuit board (1).

4. The connection device according to claim 3, characterized in that: Each of the plug pins (20) comprises a fixed portion (22) and a movable portion (23); one end of the movable portion (23) is used to form the movable end (21); an end of the fixed portion (22) away from the movable portion (23) is used to form the fixed end; the movable portion (23) and the fixed portion (22) are connected; at least a portion of the movable portion (23) is movably arranged relative to the fixed portion (22); at least a portion of the fixed portion (22) is inserted into the first connector (10) so that the fixed end and the first connector (10) are electrically connected.

5. The connection device according to claim 4, characterized in that: Each of the plug pins (20) further comprises an elastic member, wherein the elastic member is arranged in the fixed portion (22), one end of the elastic member is connected to the movable portion (23), and the other end of the elastic member is connected to the inner wall of the fixed portion (22), and when the movable end (21) of each of the plug pins (20) abuts against the corresponding planar electrode (4) of the mobile circuit board (1), the elastic member undergoes elastic deformation to keep the movable end (21) in abutment with the mobile circuit board (1).

6. The connection device according to claim 4, characterized in that: The movable portion (23) of each of the plug pins (20) is made of elastic material, and when the movable end (21) of each of the plug pins (20) abuts against the corresponding planar electrode (4) of the movable circuit board (1), the movable end (21) moves in a direction close to the fixed end, so that the movable portion (23) undergoes elastic deformation, so that the movable end (21) remains in abutment with the movable circuit board (1).

7. The connection device according to claim 4, characterized in that: The connecting device further comprises a fixing member (40), the fixing member (40) extending in a vertical direction, the fixing member (40) being arranged on the first connecting member (10), and at least a portion of each of the plug pins (20) being inserted into the fixing member (40), so that the fixing member (40) fixes each of the plug pins (20).

8. The connection device according to claim 7, characterized in that: The fixing member (40) is provided with a plurality of through holes (41), and the plurality of through holes (41) and the plurality of plug pins (20) are arranged in one-to-one correspondence, at least a portion of each plug pin (20) is inserted into the corresponding through hole (41), and the movable end (21) of each plug pin (20) extends out of the corresponding through hole (41) to abut against the corresponding planar electrode (4) of the mobile circuit board (1).

9. The connection device according to claim 8, characterized in that: Each of the through holes (41) comprises a first hole segment (411) and a second hole segment (412); the diameter of the second hole segment (412) is larger than the diameter of the first hole segment (411); the fixed portion (22) of each of the plug pins (20) is inserted into the second hole segment (412) of the corresponding through hole (41); and at least a portion of the movable portion (23) of each of the plug pins (20) is inserted into the corresponding first hole segment (411).

10. The connection device according to claim 1, characterized in that The connecting device comprises a plurality of pin groups, wherein the plurality of pin groups are arranged on the first connecting member (10) at intervals along the extension direction of the first connecting member (10), and each of the pin groups comprises a plurality of pins (20), wherein the plurality of pins (20) are arranged at intervals along a preset direction; wherein the preset direction is arranged perpendicular to the extension direction of the first connecting member (10).

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