Signal connector, mainboard and electronic equipment

Abstract

The present disclosure relates to a signal connector, a mainboard and an electronic device, wherein the signal connector comprises: a base, a connecting column and at least one locking member; the base is made of metal material, and comprises a first surface and a second surface opposite to each other, wherein the first surface is used to be fixed as a whole with a printed circuit board and electrically connected to a first connecting pin on the printed circuit board; the second surface is used to be electrically connected to a second connecting pin on a flexible circuit board; the connecting column is fixed on the second surface of the base; the locking member comprises a fixed end and a free end opposite to each other, wherein the fixed end is fixed to an end of the connecting column away from the base, and the free end can move relative to the connecting column to approach or move away from the connecting column, thereby allowing or restricting an opening on the flexible circuit board from passing through the locking member. The present disclosure can realize signal transmission and structural fixation between a printed circuit board and a flexible circuit board at a low cost and with simple assembly.

Description

Technical Field

[0001] The present disclosure relates to the field of electronic process technology, and in particular to a signal connector, a mainboard and an electronic device. Background Art

[0002] Electronic devices are usually provided with a printed circuit board (PCB) and a flexible printed circuit board (FPC), and signal transmission and structural fixation need to be achieved between the printed circuit board and the flexible circuit board.

[0003] At present, there are usually two ways to connect printed circuit boards and flexible circuit boards. The first is to weld BTB (Board-to-board Connectors) sockets on both the printed circuit board and the flexible circuit board, and realize signal transmission and structural fixation through mutual buckling; the second is to weld springs on the printed circuit board, set pads on the flexible circuit board, and then use glue to stick the flexible circuit board to the middle frame, and then place the springs on the printed circuit board and the pads on the flexible circuit board correspondingly, and finally fix the printed circuit board to the middle frame with screws, so as to realize signal transmission and structural fixation.

[0004] For flexible circuit boards that transmit fewer signals (such as the common side button FPC with 4 signals or the earpiece FPC with 2 signals, etc.), the first method uses a BTB socket (such as the smallest one currently used in mobile phones has 10 signal PINs) to achieve connection, which is very cost-effective. The second method has a rigid and complicated assembly method. Additional positioning holes need to be added to the FPC, which increases the total area of ​​the flexible circuit board. At the same time, there are limitations on the design of the printed circuit board, and the use of glue is increased, which increases the cost. Therefore, the two existing methods of connecting printed circuit boards and flexible circuit boards cannot meet user needs. The problem that still needs to be solved is how to achieve signal transmission and structural fixation between printed circuit boards and flexible circuit boards under the premise of low cost and simple assembly. Summary of the invention

[0005] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a signal connector, a mainboard and an electronic device.

[0006] In a first aspect, an embodiment of the present disclosure provides a signal connector for fixing a printed circuit board and a flexible circuit board as one body and electrically connecting the printed circuit board and the flexible circuit board; the printed circuit board comprises a first connecting pin; the flexible circuit board comprises an opening penetrating the flexible circuit board and a second connecting pin arranged around the opening;

[0007] The signal connector includes a base, a connecting column and at least one locking member;

[0008] The base is made of metal material, and includes a first surface and a second surface relative to each other, wherein the first surface is used to be fixed to the printed circuit board as a whole and electrically connected to the first connecting pin on the printed circuit board; the second surface is used to be electrically connected to the second connecting pin on the flexible circuit board; the connecting column is fixed on the second surface of the base; the locking member includes a fixed end and a free end relative to each other, the fixed end is fixed to one end of the connecting column away from the base, and the free end can move relative to the connecting column to approach or move away from the connecting column, thereby allowing or restricting the opening on the flexible circuit board to pass through the locking member.

[0009] Further, the signal connector includes at least two locking members;

[0010] The at least two locking pieces are symmetrically distributed around the connecting column.

[0011] Furthermore, the flexible circuit board includes a flexible circuit board body and a reinforcement board;

[0012] The flexible circuit board body includes a third surface and a fourth surface opposite to each other, the second connecting pin is located on the third surface, and the reinforcing plate is fixed on the fourth surface of the flexible circuit board body; the opening penetrates both the flexible circuit board body and the reinforcing plate.

[0013] Further, the locking member includes a first portion and a second portion;

[0014] The first part includes an opposite first end and a second end, the second part includes an opposite third end and a fourth end, the first end serves as the fixed end, the second end is connected to the third end, and the fourth end serves as the free end;

[0015] The figure obtained by cutting the whole formed by the first part and the second part by a plane passing through the whole and the connecting column is a broken line or an arc; the distance between the second end and the connecting column is greater than the distance between the free end and the connecting column;

[0016] When the opening of the flexible circuit board is not placed on the connecting column, the distance from the free end to the connecting column is a first distance d1; when the opening of the flexible circuit board is placed on the connecting column, the distance from the free end to the connecting column is a second distance d2; when the opening of the flexible circuit board is placed on the connecting column, the distance from the free end to the connecting column is a third distance d3; d1>d3>d2.

[0017] Furthermore, when the opening of the flexible circuit board is not placed on the connecting column, the distance from the free end to the second surface of the base is equal to the thickness of the flexible circuit board.

[0018] Furthermore, a first accommodating groove is provided on the connecting column;

[0019] When the opening of the flexible circuit board is placed on the connecting post, the free end extends into the first accommodating groove.

[0020] Further, the locking member further comprises a third portion; the third portion comprises a fifth end and a sixth end opposite to each other;

[0021] The fifth end is connected to the free end;

[0022] When the opening of the flexible circuit board is placed on the connecting column, the intersection line of the surface of the flexible circuit board facing away from the printed circuit board and the inner wall of the opening is taken as the first intersection line, the fifth end is in contact with at least part of the first intersection line, the line connecting the fifth end and the sixth end is parallel to the connecting column, and the third part is in contact with the inner wall of the opening.

[0023] Furthermore, a second accommodating groove is provided on the connecting column;

[0024] When the opening of the flexible circuit board is placed on the connecting post, the third portion extends into the second accommodating groove.

[0025] Furthermore, a third accommodating groove is provided on the connecting column;

[0026] The fixed end of the locking member is fixed in the third accommodating groove, and when the opening of the flexible circuit board is sleeved on the connecting column, the locking member is completely extended into the third accommodating groove.

[0027] In a second aspect, an embodiment of the present disclosure further provides a mainboard, comprising a signal connector between any of the printed circuit boards provided by the embodiments of the present disclosure.

[0028] In a third aspect, an embodiment of the present disclosure further provides an electronic device, comprising any one of the mainboards provided by the embodiments of the present disclosure.

[0029] The signal connector provided in the embodiment of the present disclosure includes a base, a connecting column and at least one locking member; the base is made of metal material, and the base includes a first surface and a second surface relative to each other, the first surface is used to be fixed to the printed circuit board as a whole, and is electrically connected to the first connecting pin on the printed circuit board; the second surface is used to be electrically connected to the second connecting pin on the flexible circuit board; the connecting column is fixed on the second surface of the base; the locking member includes a fixed end and a free end relative to each other, the fixed end is fixed to one end of the connecting column away from the base, and the free end can move relative to the connecting column to approach or move away from the connecting column, thereby allowing or restricting the opening on the flexible circuit board to pass through the locking member, thereby solving the problem of high cost and complex assembly of the existing connection method between the printed circuit board and the flexible circuit board, and achieving signal transmission and structural fixation between the printed circuit board and the flexible circuit board under the premise of low cost and simple assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0032] Figure 1 A schematic diagram of the structure of a signal connector in a first state provided by an embodiment of the present disclosure;

[0033] Figure 2 for Figure 1 A schematic diagram of the structure of the second state of the middle signal connector;

[0034] Figure 3 For the general Figure 1 A schematic diagram of the structure in which the signal connector is assembled on a printed circuit board and a flexible circuit board;

[0035] Figure 4 To observe from the printed circuit board to the flexible circuit board Figure 3 When using a flexible circuit board, the structural diagram of the flexible circuit board;

[0036] Figure 5 Observe from the direction from the flexible circuit board to the printed circuit board Figure 3 A schematic diagram of the top view of the locking member and the connecting column in the middle signal connector;

[0037] Figure 6 A schematic diagram of a top view of another signal connector provided in an embodiment of the present disclosure;

[0038] Figure 7 A schematic diagram of the structure of another flexible circuit board provided in an embodiment of the present disclosure;

[0039] Figure 8 A schematic diagram of the structure of another signal connector in a first state provided by an embodiment of the present disclosure;

[0040] Fig. 9 for Figure 8 A schematic diagram of the structure of the second state of the middle signal connector;

[0041] Fig.10 To assemble the flexible circuit board Figure 8 Schematic diagram of the structure on the signal connector;

[0042] Fig.11 A schematic diagram of the structure of another signal connector in a first state provided by an embodiment of the present disclosure;

[0043] Fig.12 for Fig.11 A schematic diagram of the structure of the second state of the middle signal connector;

[0044] Fig.13 A schematic diagram of the structure of another signal connector in a first state provided by an embodiment of the present disclosure;

[0045] Fig.14 for Fig.13 A schematic diagram of the structure of the second state of the middle signal connector;

[0046] Fig.15 To equip the flexible circuit board with Fig.13 Schematic diagram of the structure on the signal connector;

[0047] Fig.16 A schematic diagram of the structure of another signal connector in a first state provided by an embodiment of the present disclosure;

[0048] Fig.17 for Fig.16 A schematic diagram of the structure of the second state of the middle signal connector;

[0049] Fig.18 A schematic diagram of the structure of a mainboard provided in an embodiment of the present disclosure;

[0050] Fig.19 A schematic diagram of the structure of an electronic device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0051] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0052] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0053] In view of the problem that the connection method between the printed circuit board and the flexible circuit board in the prior art is high in cost and complex in assembly, the embodiments of the present disclosure provide a signal connector solution, which achieves the effect of signal transmission and structural fixation between the printed circuit board and the flexible circuit board with low cost and simple assembly.

[0054] In the present disclosure, the first state of the signal connector refers to a state where the signal connector is not assembled with the flexible circuit board. The second state of the signal connector refers to a state where the signal connector is being assembled with the flexible circuit board.

[0055] Figure 1 A structural schematic diagram of a first state of a signal connector provided by an embodiment of the present disclosure. Figure 2 for Figure 1 Schematic diagram of the structure of the second state of the signal connector. Figure 3 For the general Figure 1 Schematic diagram of the structure of the signal connector assembled on the printed circuit board and the flexible circuit board. Figure 4 To observe from the printed circuit board to the flexible circuit board Figure 3 When the flexible circuit board is used, the structural diagram of the flexible circuit board is shown. Figure 1-Figure 4 The signal connector 30 is used to fix the printed circuit board 10 and the flexible circuit board 20 as a whole, and to electrically connect the printed circuit board 10 and the flexible circuit board 20; the printed circuit board 10 includes a first connecting pin 11; the flexible circuit board 20 includes an opening 22 that passes through the flexible circuit board 20 and a second connecting pin 21 arranged around the opening 22.

[0056] See also Figure 1-Figure 4The signal connector 30 includes a base 31, a connecting column 32 and at least one locking member 33; the base 31 is made of metal material, and includes a first surface 311 and a second surface 312 opposite to each other. The first surface 311 is used to be fixed to the printed circuit board 10 as a whole, and is electrically connected to the first connecting pin 11 on the printed circuit board 10; the second surface 312 is used to be electrically connected to the second connecting pin 21 on the flexible circuit board 20; the connecting column 32 is fixed on the second surface 312 of the base 31; the locking member 33 includes a fixed end 331 and a free end 332 opposite to each other, the fixed end 331 is fixed to one end of the connecting column 32 away from the base 31, and the free end 332 can move relative to the connecting column 32 to approach or move away from the connecting column 32, thereby allowing or restricting the opening 22 on the flexible circuit board 20 to pass through the locking member 33.

[0057] contrast Figure 1 and Figure 2 It can be found that since the free end 332 of the locking member 33 can move relative to the connecting post 32 to get closer to or farther away from the connecting post 32, the size of the whole formed by the locking member 33 and the connecting post 32 in the X direction in the figure can be changed. Figure 1 , let d 远 It indicates the size of the whole formed by the locking member 33 and the connecting column 32 in the X direction in the figure when the free end 332 is away from the connecting column 32. Figure 2 , d 近 represents the size of the whole formed by the locking member 33 and the connecting column 32 in the X direction in the figure when the free end 332 is close to the connecting column 32. Then d 近 <d 远 .

[0058] On this basis, see Figure 1-Figure 4 The specific assembly steps of assembling the signal connector 30 on the printed circuit board 10 and the flexible circuit board 20 may include:

[0059] First, the first surface 311 of the base 31 is fixed to the printed circuit board 10 as a whole, and is electrically connected to the first connecting pin 11 on the printed circuit board 10. This step can be specifically implemented by welding, with the first surface 311 of the base 31 being a welding foot, and the base 31 is welded to the first connecting pin 11 of the printed circuit board 10, so that the first surface 311 of the base 31 is fixed to the printed circuit board 10 as a whole, and is electrically connected to the first connecting pin 11 on the printed circuit board 10. In this step, the free end 332 is far away from the connecting column 32, so that the size of the whole formed by the locking member 33 and the connecting column 32 in the X direction in the figure is larger than the size of the opening 22 on the flexible circuit board 20. At this time, the shape of the signal connector is as follows: Figure 1 shown.

[0060] Secondly, the free end 332 of the locking member 33 is controlled to move in a direction close to the connecting column 32, so that the size of the whole formed by the locking member 33 and the connecting column 32 in the X direction in the figure gradually decreases. Figure 2 When the size of the whole formed by the locking member 33 and the connecting column 32 in the X direction in the figure is smaller than the size of the opening 22 on the flexible circuit board 20, the surface of the flexible circuit board 20 provided with the second connecting pin 22 is directed toward the printed circuit board 10, and the opening 22 of the flexible circuit board 20 is controlled to pass through the whole formed by the locking member 33 and the connecting column 32 and be placed on the connecting column 32.

[0061] Finally, the free end 332 of the locking member 33 is controlled to move in a direction away from the connecting column 32, so that the size of the whole formed by the locking member 33 and the connecting column 32 in the X direction of the figure gradually increases, until the size of the whole formed by the locking member 33 and the connecting column 32 in the X direction of the figure is larger than the size of the opening 22 on the flexible circuit board 20. At this time, the shape of the signal connector 30 and the relative position relationship between the signal connector 30 and the flexible circuit board 20 are as shown in FIG. Figure 3 shown.

[0062] Continue to see Figure 3 When the size of the whole formed by the locking member 33 and the connecting column 32 in the X direction in the figure is larger than the size of the opening 22 on the flexible circuit board 20, the opening 22 on the flexible circuit board 20 cannot pass through the whole formed by the locking member 33 and the connecting column 32, that is, the position of the flexible circuit board 20 is restricted (or called locked), and the structure between the printed circuit board 10 and the flexible circuit board 20 is fixed. In addition, because the material of the base 31 is a metal material (such as copper), which has conductivity, by setting the first surface 311 of the base 31 to be electrically connected to the first connecting pin 11 on the printed circuit board 10, and the second surface 312 of the base 31 to be electrically connected to the second connecting pin 21 on the flexible circuit board 20, the first connecting pin 11 on the printed circuit board 10 and the second connecting pin 21 on the flexible circuit board 20 can be electrically connected, and the signal transmission between the printed circuit board 10 and the flexible circuit board 20 can be realized.

[0063] The signal connector in the above technical solution has a simple structure, low cost, and simple assembly steps, which can improve the flexibility of the printed circuit board.

[0064] It should be noted that the signal connector provided in the present disclosure is only applicable to the case where one second connection pin is electrically connected to one first connection pin. When there are n second connection pins on the flexible circuit board that need to be electrically connected to n first connection pins on the printed circuit board, n signal connectors are required for connection.

[0065] Figure 5Observe from the direction from the flexible circuit board to the printed circuit board Figure 3 A schematic diagram of the top view of the locking member and the connecting column in the middle signal connector. Figure 5 In the embodiment, the signal connector is provided with only one locking member 33, which surrounds the connecting column 32. This is only a specific example of the present application, and is not a limitation to the present application.

[0066] In practice, the signal connector 30 may include at least two locking members 33; the at least two locking members 33 are distributed around the connecting column 32. On this basis, optionally, the at least two locking members 33 are symmetrically distributed around the connecting column 32. The symmetry may be that on a plane parallel to the first surface 311 of the base 31, the at least two locking members 33 are distributed around the connecting column 32 in an axisymmetric or point-symmetrical manner. Figure 6 A schematic diagram of a top view of another signal connector provided in an embodiment of the present disclosure. Figure 6 In the embodiment, the signal connector is provided with two locking members 33, which are symmetrically distributed on both sides of the connection column 32. This arrangement allows the flexible circuit board 20 to be subjected to balanced force during the assembly process of the flexible circuit board 20 and the signal connector 30 and after the flexible circuit board 20 is sleeved on the connection column 32 of the signal connector 30, so as to protect the flexible circuit 20 and ensure stable electrical connection between the flexible circuit board 20 and the printed circuit board 10.

[0067] It should be noted that in Figure 5 and Figure 6 In the embodiment, the shape of the connecting column 32 is a rectangle, which is only a specific example of the present disclosure, and is not a limitation of the present disclosure. In practice, the shape of the connecting column 32 can also be a circle, an ellipse, or other polygons other than a rectangle. Similarly, in practice, the shape of the base and the opening in the flexible circuit board can also be a circle, an ellipse, or a polygon, as long as the flexible circuit board can be locked.

[0068] It should also be noted that Figure 3 In the embodiment, the vertical projection of the base 31 on the printed circuit board 10 is located in the area covered by the first connecting pin 11, which is only a specific example of the present disclosure, and not a limitation of the present disclosure. In practice, the vertical projection of the base 31 on the printed circuit board 10 can also be set to be only partially located in the area covered by the first connecting pin 11.

[0069] Figure 7 This is a schematic diagram of the structure of another flexible circuit board provided by an embodiment of the present disclosure. Figure 7Optionally, the flexible circuit board 20 includes a flexible circuit board body 23 and a reinforcing plate 24; the flexible circuit board body 23 includes a third surface 231 and a fourth surface 232 opposite to each other, the second connecting pin 21 is located on the third surface 231, and the reinforcing plate 24 is fixed on the fourth surface 232 of the flexible circuit board body 23; the opening 22 penetrates both the flexible circuit board body 23 and the reinforcing plate 24. This arrangement can enhance the hardness of the area near the opening 22 of the flexible circuit board 20, on the one hand, it can facilitate the assembly of the flexible circuit board 20 on the signal connector 30; on the other hand, it ensures that the flexible circuit board 20 is stably electrically connected to the printed circuit board 10. At the same time, the reinforcing plate 24 also protects the flexible circuit board body 23 to prevent the internal circuit from breaking.

[0070] In practice, there are many specific configuration schemes for the locking member 33, and this application does not limit this. Optionally, the locking member 33 is a retractable member extending along the X direction in the figure, such as a spring.

[0071] Figure 8 A schematic structural diagram of a first state of another signal connector provided in an embodiment of the present disclosure. Fig. 9 for Figure 8 Schematic diagram of the structure of the second state of the signal connector. Fig.10 To assemble the flexible circuit board Figure 8 Schematic diagram of the structure on the signal connector. Figure 8-Figure 10 In the signal connector, the locking member 33 includes a first portion 33a and a second portion 33b; the first portion 33a includes a first end 33a1 and a second end 33a2 opposite to each other, the second portion 33b includes a third end 33b1 and a fourth end 33b2 opposite to each other, the first end 33a1 serves as a fixed end 331, the second end 33a2 is connected to the third end 33b1, and the fourth end 33b2 serves as a free end 332; the figure obtained by cutting the whole formed by the first portion 33a and the second portion 33b through the plane passing through the whole and the connecting column 32 is a broken line; the distance between the second end 33a2 and the connecting column 32 is greater than the distance between the free end 332 and the connecting column 32. Figure 8 When the opening 22 of the flexible circuit board 20 is not placed on the connecting post 32, the distance between the free end 332 and the connecting post 32 is the first distance d1. Fig. 9 In the process of the opening 22 of the flexible circuit board 20 being placed on the connecting post 32, the distance between the free end 332 and the connecting post 32 is a second distance d2 (exemplarily, Fig. 9 In the embodiment, the free end 332 contacts the connecting column 32, and d2 = 0. Fig.10 When the opening 22 of the flexible circuit board 20 is placed on the connecting post 32, the distance between the free end 332 and the connecting post 32 is a third distance d3; d1>d3>d2.

[0072] Continue to see Figure 8-Figure 10 The specific assembly steps of assembling the signal connector 30 on the printed circuit board 10 and the flexible circuit board 20 may include:

[0073] First, the first surface 311 of the base 31 is fixed to the printed circuit board 10 as a whole, and is electrically connected to the first connecting pin 11 on the printed circuit board 10. At this time, the shape of the signal connector is as follows: Figure 8 shown.

[0074] Next, the surface of the flexible circuit board 20 provided with the second connecting pin 22 is directed toward the printed circuit board 10 , and the opening 22 of the flexible circuit board 20 is controlled to pass through the whole formed by the locking member 33 and the connecting post 32 , and is sleeved on the connecting post 32 .

[0075] Since the first end 33a1 of the locking member 33 is used as the fixed end 331 and fixed on the connecting column 32, and the fourth end 33b2 is used as the free end 332, and the figure obtained by cutting the whole formed by the first part 33a and the second part 33b by the plane passing through the whole and the connecting column 32 is a broken line shape; the distance between the second end 33a2 and the connecting column 32 is greater than the distance between the free end 332 and the connecting column 32. This arrangement will make the size of the whole formed by the first part 33a, the second part 33b and the connecting column 32 on the X-axis increase first and then decrease along the direction from the connecting column 32 to the base 31.

[0076] When assembling the flexible circuit board 20, since the size of the end of the connecting column 32 away from the base 31 on the X-axis is smaller than the size of the opening 22 of the flexible circuit board 20 on the X-axis, the opening 22 of the flexible circuit board 20 can be directly placed on the end of the connecting column 32 away from the base 31. At this time, part of the first portion 33a and part of the connecting column 32 are located in the opening 22 of the flexible circuit board 20.

[0077] When the flexible circuit board 20 is pressed in the direction from the connecting post 32 to the base 31, the flexible circuit board 20 applies force to the locking member 33, causing the locking member 33 to shrink toward the connecting post 32, and the distance between the free end 332 and the connecting post 32 gradually decreases until the opening of the flexible circuit board 20 reaches the second end 33a2. The locking member 33 shrinks to the smallest state toward the connecting post 32, and the shape of the signal connector is as follows: Fig. 9 shown.

[0078] The flexible circuit board 20 is continuously pressed in the direction from the connecting post 32 to the base 31, and part of the second portion 33b and part of the connecting post 32 are located in the opening 22 of the flexible circuit board 20. Since the size of the whole formed by the second portion 33b and the connecting post 32 on the X-axis gradually decreases in the direction from the connecting post 32 to the base 31, as the flexible circuit board 20 continues to slide in the direction close to the base 31, under the action of internal stress, the locking member 33 gradually extends in the direction away from the connecting post 32 until the flexible circuit board 20 contacts the base 31, and the assembly of the flexible circuit board 20 is completed. At this time, due to the blocking effect of the opening 22 of the flexible circuit board 20, the locking member 33 has not yet fully extended, and the second portion 33b is against the flexible circuit board 20, and finally d1>d3>d2. After the flexible circuit board 20 is assembled, the second portion 33b of the locking member 33 abuts against the flexible circuit board 20, and the second portion 33b of the locking member 33 applies a force to the flexible circuit board 20, thereby further fixing the relative position of the flexible circuit board 20 and the base 31, ensuring that the flexible circuit board 20 is stably electrically connected to the printed circuit board 10.

[0079] Optionally, in practice, “the figure obtained by cutting the whole formed by the first part 33a and the second part 33b through the plane passing through the whole and the connecting column 32 is a broken line” can be replaced with “the figure obtained by cutting the whole formed by the first part 33a and the second part 33b through the plane passing through the whole and the connecting column 32 is an arc”.

[0080] Optionally, the first portion 33a and the second portion 33b of the locking member 33 are in a thin skin shape.

[0081] On the basis of the above technical solutions, optionally, when the opening 20 of the flexible circuit board 20 is not placed on the connecting column 32, the distance from the free end 332 to the second surface 312 of the base 31 is equal to the thickness of the flexible circuit board 20. The purpose of such a setting is to make the dimension of the locking member 33 in the Y-axis direction long enough to ensure that after the flexible circuit board 20 is assembled, the second portion 33b of the locking member 33 abuts against the flexible circuit board 20. It should be noted that when the flexible circuit board 20 includes a flexible circuit board body 23 and a reinforcing plate 24, the thickness of the flexible circuit board 20 here is the sum of the thickness of the flexible circuit board body 23 and the thickness of the reinforcing plate 24.

[0082] Fig.11 A schematic structural diagram of a first state of another signal connector provided in an embodiment of the present disclosure. Fig.12 for Fig.11 Schematic diagram of the second state of the signal connector. Fig.11 and Fig.12 Optionally, a first receiving groove 321 is provided on the connecting post 32. When the opening 22 of the flexible circuit board 20 is placed on the connecting post 32, Fig.12, the free end 332 extends into the first accommodating groove 321. Those skilled in the art can understand that when the locking member 33 shrinks to the minimum close to the connecting column 32, the smaller the size of the whole formed by the locking member 33 and the connecting column 32 on the X-axis, the smaller the size of the opening 22 that can be allowed to pass through. For connecting columns 32 of the same size, by setting the first accommodating groove 321, the size of the whole formed by the locking member 33 and the connecting column 32 on the X-axis after the locking member 33 shrinks can be further reduced, thereby reducing the size of the opening 22 that needs to be set on the flexible circuit board 20. For flexible circuit boards 20 with the same area, such a setting can arrange more second connecting pins, signal lines or components on the flexible circuit board 20, which can improve the utilization rate of the area of ​​the flexible circuit board 20. For the case where the number of second connecting pin signal lines, signal lines or components that need to be arranged on the flexible circuit board 20 is certain, such a setting can reduce the area of ​​the flexible circuit board 20, which can adapt to the development trend of miniaturization of electronic equipment.

[0083] Fig.13 A schematic structural diagram of a first state of another signal connector provided in an embodiment of the present disclosure. Fig.14 for Fig.13 Schematic diagram of the structure of the second state of the signal connector. Fig.15 For the general Fig.13 Schematic diagram of the structure of the flexible circuit board assembled on the signal connector. Figure 13-Figure 15 In the signal connector, the locking member 33 further includes a third portion 33c; the third portion 33c includes a fifth end 33c1 and a sixth end 33c2 opposite to each other; the fifth end 33c1 is connected to the free end 332. When the opening 22 of the flexible circuit board 20 is placed on the connecting column 32, see Fig.15 , the intersection of the surface of the flexible circuit board 20 facing away from the printed circuit board 10 and the inner wall of the opening 22 is the first intersection line m, the fifth end 33c1 contacts at least part of the first intersection line m, the line connecting the fifth end 33c1 and the sixth end 33c2 is parallel to the connecting column 32, and the third portion 33c abuts against the inner wall of the opening 22. In this arrangement, the third portion 33c can be used to further fix the position of the flexible circuit board 20 in the X-axis direction and the Y-axis direction, and further improve the reliability of the electrical connection between the flexible circuit board 20 and the printed circuit board 10.

[0084] Optionally, the third portion 33c of the locking member 33 is in a thin skin shape.

[0085] Continue to see Figure 13-Figure 15 Optionally, a second receiving groove 322 is provided on the connecting column 32. Fig.14, when the opening 22 of the flexible circuit board 20 is placed on the connecting column 32, the third portion 33c extends into the second accommodating groove 322. For connecting columns 32 of the same size, by providing the second accommodating groove 322, the size of the whole formed by the locking member 33 and the connecting column 32 on the X-axis after the locking member 33 is contracted can be further reduced, thereby reducing the size of the opening 22 that needs to be provided on the flexible circuit board 20, improving the utilization rate of the area of ​​the flexible circuit board 20, or making the flexible circuit board 20 more miniaturized.

[0086] Fig.16 A schematic structural diagram of a first state of another signal connector provided in an embodiment of the present disclosure. Fig.17 for Fig.16 Schematic diagram of the structure of the second state of the signal connector. In the signal connector 30, a third receiving groove 323 is provided on the connecting column 32; the fixing end 331 of the locking member 33 is fixed in the third receiving groove 323. Fig.17 , when the opening 22 of the flexible circuit board 20 is placed on the connecting column 32, the locking member 33 is completely inserted into the third accommodating groove 323. Similarly, for the connecting column 32 of the same size, by providing the third accommodating groove 323, the size of the whole formed by the locking member 33 and the connecting column 32 on the X-axis after the locking member 33 is contracted can be further reduced, thereby reducing the size of the opening 22 that needs to be provided on the flexible circuit board 20, improving the utilization rate of the area of ​​the flexible circuit board 20, or making the flexible circuit board 20 more miniaturized.

[0087] It should be noted that in the above technical solutions, since the connecting column 32 and the locking member 33 do not have the task of electrical connection, the present application does not limit the materials of the connecting column 32 and the locking member 33, which can be metal materials or non-metal materials.

[0088] Fig.18 A schematic diagram of the structure of a mainboard provided by an embodiment of the present disclosure. Fig.18 The mainboard includes any one of the signal connectors 300 provided in the embodiments of the present disclosure. The mainboard also includes at least one printed circuit board 100 and at least one flexible circuit board 200. The printed circuit board 100 and the flexible circuit board 200 are fixed together through the signal connector 300 and are electrically connected.

[0089] Optionally, the flexible circuit board 200 may be a side button flexible circuit board or a receiver flexible circuit board.

[0090] Since the mainboard provided in the embodiment of the present disclosure includes any one of the signal connectors provided in the embodiment of the present disclosure, it has the same or corresponding beneficial effects as the signal connector it includes, which will not be described in detail here.

[0091] Fig.19A schematic diagram of the structure of an electronic device provided by an embodiment of the present disclosure. Fig.19 The electronic device includes any one of the mainboards 101 provided in the embodiments of the present disclosure.

[0092] The electronic device may specifically be a mobile phone, a tablet computer, a laptop computer, a smart speaker, a television, a smart wearable device, an information inquiry machine in a public place, etc.

[0093] Since the electronic device provided by the embodiments of the present disclosure includes any one of the mainboards provided by the embodiments of the present disclosure, it has the same or corresponding beneficial effects as the mainboard it includes, which will not be described in detail here.

[0094] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0095] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A signal connector, characterized in that: Used to fix a printed circuit board and a flexible circuit board as one body, and make the printed circuit board and the flexible circuit board electrically connected; the printed circuit board comprises a first connecting pin; the flexible circuit board comprises an opening penetrating the flexible circuit board and a second connecting pin arranged around the opening; The signal connector includes a base, a connecting column and at least one locking member; The base is made of metal material, and includes a first surface and a second surface relative to each other, wherein the first surface is used to be fixed to the printed circuit board as a whole and electrically connected to the first connecting pin on the printed circuit board; the second surface is used to be electrically connected to the second connecting pin on the flexible circuit board; the connecting column is fixed on the second surface of the base; the locking member includes a fixed end and a free end relative to each other, the fixed end is fixed to one end of the connecting column away from the base, and the free end can move relative to the connecting column to approach or move away from the connecting column, thereby allowing or restricting the opening on the flexible circuit board to pass through the locking member.

2. The signal connector according to claim 1, characterized in that: The signal connector includes at least two locking members; The at least two locking pieces are symmetrically distributed around the connecting column.

3. The signal connector according to claim 1, characterized in that: The flexible circuit board comprises a flexible circuit board body and a reinforcement board; The flexible circuit board body includes a third surface and a fourth surface opposite to each other, the second connecting pin is located on the third surface, and the reinforcing plate is fixed on the fourth surface of the flexible circuit board body; the opening penetrates both the flexible circuit board body and the reinforcing plate.

4. The signal connector according to claim 1, characterized in that: The locking member comprises a first portion and a second portion; The first part includes an opposite first end and a second end, the second part includes an opposite third end and a fourth end, the first end serves as the fixed end, the second end is connected to the third end, and the fourth end serves as the free end; The figure obtained by cutting the whole formed by the first part and the second part by a plane passing through the whole and the connecting column is a broken line or an arc; the distance between the second end and the connecting column is greater than the distance between the free end and the connecting column; When the opening of the flexible circuit board is not placed on the connecting column, the distance from the free end to the connecting column is a first distance d1; when the opening of the flexible circuit board is placed on the connecting column, the distance from the free end to the connecting column is a second distance d2; when the opening of the flexible circuit board is placed on the connecting column, the distance from the free end to the connecting column is a third distance d3; d1>d3>d2.

5. The signal connector according to claim 4, characterized in that: When the opening of the flexible circuit board is not placed on the connecting column, the distance from the free end to the second surface of the base is equal to the thickness of the flexible circuit board.

6. The signal connector according to claim 5, characterized in that: The connecting column is provided with a first accommodating groove; When the opening of the flexible circuit board is placed on the connecting column, the free end extends into the first accommodating groove.

7. The signal connector according to claim 4, characterized in that: The locking member further comprises a third portion; the third portion comprises opposite fifth and sixth ends; The fifth end is connected to the free end; When the opening of the flexible circuit board is placed on the connecting column, the intersection line of the surface of the flexible circuit board facing away from the printed circuit board and the inner wall of the opening is taken as the first intersection line, the fifth end is in contact with at least part of the first intersection line, the line connecting the fifth end and the sixth end is parallel to the connecting column, and the third part is in contact with the inner wall of the opening.

8. The signal connector according to claim 7, characterized in that: The connecting column is provided with a second accommodating groove; When the opening of the flexible circuit board is placed on the connecting post, the third portion extends into the second accommodating groove.

9. The signal connector according to claim 1, characterized in that: The connecting column is provided with a third accommodating groove; The fixed end of the locking member is fixed in the third accommodating groove, and when the opening of the flexible circuit board is sleeved on the connecting column, the locking member is completely extended into the third accommodating groove.

10. A motherboard, characterized in that: A signal connector comprising any one of claims 1 to 9.

11. An electronic device, characterized in that: Comprising the mainboard as claimed in claim 10.

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