Board card locking piece and board card connector

Abstract

The utility model discloses a board card locking piece and board card connector relates to connector technical field, the board card locking piece includes card seat and ear clip, card seat both sides are equipped with holding groove and card slot respectively, the ear clip includes main part and toggle piece that are integrated, the main part is rotatablely installed in the holding groove, the toggle piece is located outside the holding groove, and the card seat is equipped with the holding groove and the card slot respectively. One end of the shifting piece is a shifting part, and the other end of the shifting piece is provided with a clamping pin matched with a locking notch in a board card. And an elastic clamping assembly for automatically centering and fixing the board card from the front-back direction is arranged in the clamping groove. When the connector is used, a board card can be automatically centered and inserted into the slot, the board card can be positioned from multiple directions at the same time, and the technical problems that the board card is easy to deviate and misplace when being installed, the board card is easy to loosen after being installed, and the stability and the reliability are poor in an existing connector are solved.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, specifically to a board locking component and a board connector. Background Technology

[0002] With the rapid development of electronic technology, intelligent and integrated electronic devices are becoming increasingly common, such as computers, in-vehicle systems, and various servers. These electronic devices require various types of electronic circuit boards, such as graphics cards, DDR memory modules, and PCIe data acquisition cards. To ensure the stability and reliability of electronic products, the stable mounting of these electronic circuit boards is particularly important.

[0003] Currently, electronic circuit boards are typically fixed to electronic devices using slot connectors. For example, patent document CN222463532U discloses a memory module connector, which includes a connector body and ear clips. The top surface of the connector body has a insertion slot along its length, and two ends of the insertion slot are fixed with card holders. The card holders have slots for inserting the ends of the circuit board, and the ear clips are rotatably connected to the card holders. In use, the circuit board is first inserted into the insertion slot, with both ends of the board positioned within the slots, and then the ear clips are rotated into the locking notches at both ends of the board to secure it. However, careful analysis reveals that this connector still has the following technical problems:

[0004] 1. When using this connector, the circuit board is fixed by fastening the ear clips located at both ends of the insertion slot into the locking notch. However, since the width of the slot is greater than the thickness of the circuit board, the distance between the two slots after fixing is also slightly greater than the length of the circuit board. This means that the connector can only position the circuit board from the top and bottom, and cannot position it from the front, back, left, and right. This not only makes it easy for the circuit board to shift or become misaligned during installation, but also makes it easy for the circuit board to loosen when subjected to external impact or vibration, thus affecting its stability and reliability.

[0005] 2. The connector has an integrated structure of card holder and insertion slot, which means it is only suitable for fixing single-length boards, resulting in a narrow range of applications.

[0006] Therefore, new technologies are needed to improve existing connectors. Utility Model Content

[0007] This utility model addresses the shortcomings and defects of the existing technology by proposing a board locking component and a board connector. When in use, this utility model can automatically center and insert the board into the slot, and can fix the board from multiple directions at the same time. It solves the technical problems of existing connectors that are prone to misalignment and displacement when installing boards, easy loosening of boards after installation, and poor stability and reliability.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] In a first aspect, this utility model provides a plate locking component, including a card seat and an ear clip. The card seat has a receiving groove and a card slot on both sides respectively. The ear clip includes an integrally formed main body and a toggle component. The main body is rotatably installed in the receiving groove, and the toggle component is located outside the receiving groove. One end of the toggle component is a toggle part, and the other end is provided with a locking pin that matches the locking notch on the plate. The card slot is provided with an elastic clamping component that automatically centers and fixes the plate from the front and back direction.

[0010] The elastic clamping assembly includes elastic positioning pieces symmetrically fixed on both sides of the card slot. The elastic positioning pieces are provided with elastic positioning parts protruding from the side wall of the card slot. The distance between the elastic positioning parts is less than the thickness of the card. The elastic clamping assembly automatically centers and clamps the card through the elastic positioning parts.

[0011] The card holder is provided with at least one set of slots, each set of slots including two vertical grooves symmetrically arranged on both sides of the card slot, each vertical groove having a vertical notch communicating with the card slot; the elastic positioning pieces are respectively embedded in the vertical grooves, and the elastic positioning parts protrude from the side wall of the card slot through the vertical notch.

[0012] The elastic positioning piece includes an integrally formed positioning section and an elastic section. The elastic positioning part is located at the end of the elastic section. The width of the positioning section is greater than the width of the elastic section. The positioning section and the elastic section are connected by a slope. The width of the positioning section is adapted to the width of the vertical groove, and the width of the elastic section is adapted to the width of the vertical notch.

[0013] The elastic positioning part has an arc-shaped structure, which is formed by recessing one side of the elastic positioning piece and making the other side protrude.

[0014] The vertical grooves extend through the upper and lower ends of the card holder. Each vertical groove contains two elastic positioning pieces, and the elastic positioning pieces in each vertical groove are arranged symmetrically.

[0015] The card slot has integrally formed protrusions on the bottom wall located between the two side walls to restrict the movement of the card from the left and right directions.

[0016] The locking pin is formed by reducing the thickness of the middle part of the actuating element and has an H-shaped structure on the actuating element.

[0017] The main body is provided with a locking point and a hinge part that mate with the receiving groove in the middle and lower parts, respectively.

[0018] A rotation limiting structure is provided between the main body and the receiving groove. The rotation limiting structure includes recesses symmetrically arranged on both sides of the main body and limiting steps symmetrically arranged at the bottom of the receiving groove. The limiting steps are formed by reducing the width of the bottom of the receiving groove. When the main body rotates outward from the receiving groove, the limiting steps and the recesses cooperate to limit the main body.

[0019] The lower end of the card holder is provided with symmetrical connecting ear plates on both sides, and bolt holes are provided on the connecting ear plates.

[0020] The card holder has two positioning posts protruding from the bottom surface.

[0021] Secondly, this utility model provides a board connector, including a board slot and the aforementioned board locking member, wherein the board locking member is symmetrically fixed at both ends of the board slot.

[0022] The board connector also includes a base plate, the board slot is fixed on the base plate, and the card holder of the board locking member is symmetrically fixed at both ends of the board slot through the base plate.

[0023] The card holder has symmetrical connecting ear plates on both sides of its lower end. The connecting ear plates have bolt holes, and the base plate has corresponding bolt holes. The base plate and the card holder are fixed together by bolts and bolt holes.

[0024] The card holder has two positioning posts protruding from the bottom surface, and the base plate has corresponding positioning holes, with the positioning posts located inside the positioning holes.

[0025] Compared with the prior art, the beneficial effects of adopting this utility model are as follows:

[0026] 1. The circuit board locking component provided by this utility model features an elastic clamping assembly within the slot of the card holder, which automatically centers and secures the circuit board from the front and back. Compared to existing connectors, this utility model, through its elastic clamping assembly, allows the circuit board to be automatically centered and inserted into the slot, effectively preventing misalignment during installation. After inserting the circuit board into the slot and locking it with the circuit board locking component, in addition to securing the circuit board vertically using the slot and groove, the elastic clamping assembly can also secure the circuit board from the front and back. Furthermore, the circuit board locking component can also secure the circuit board horizontally, thus simultaneously securing the circuit board from six directions: front, back, left, right, top, and bottom, effectively improving the securing effect. Additionally, this utility model allows for easy removal of the circuit board simply by rotating the ear clip to disengage the locking notch on the circuit board. This not only simplifies the connector structure but also prevents damage to the circuit board during removal, reducing production costs and extending the circuit board's lifespan.

[0027] 2. This utility model uses symmetrically arranged elastic positioning pieces as elastic clamping components. Since the elastic positioning pieces are provided with elastic positioning parts protruding from the side wall of the card slot, and the distance between the elastic positioning parts is less than the thickness of the card, they can automatically contract to both sides when subjected to the squeezing force of the inserted card, so that the card can be inserted smoothly. With the elasticity of the elastic positioning parts, this not only helps the card to be automatically aligned and inserted into the slot, but also helps to clamp the card from the front and rear directions, so that the card can be fixed more stably and reliably.

[0028] 3. In this utility model, the width of the positioning section is set to be greater than the width of the elastic section, which makes it easier to stably embed the elastic positioning piece in the vertical groove through the positioning section, thereby enabling the elastic clamping component to achieve a better fixing effect on the board.

[0029] 4. The present invention sets the elastic positioning part as an arc-shaped structure, which not only facilitates the smooth centering and insertion of the board, but also helps to achieve a better clamping and fixing effect on the board without damaging it.

[0030] 5. This utility model symmetrically arranges two elastic positioning pieces in each vertical groove, which can form a multi-point clamping and fixing effect on the board, thereby effectively improving the stability and reliability of the board after fixing.

[0031] 6. This utility model can abut against the card from the left and right directions (both ends of the card) through the convex strips. Even if the distance between the card slots is greater than the length of the card, it can effectively limit the left and right swaying of the card, thereby achieving a better fixing effect.

[0032] 7. The locking pin in this utility model is formed by reducing the thickness of the middle part of the actuating component and making the locking pin have an H-shaped structure on the actuating component. This makes the locking pin have sufficient structural strength on the actuating component and ensures that it has a better locking effect on the plate.

[0033] 8. The present invention uses a locking point to keep the ear clip stable after locking the plate, a hinge to facilitate the effective rotation of the ear clip, and a rotation limiting structure to limit the rotation of the ear clip, thus avoiding inconvenience in locking the plate due to excessive rotation angle of the ear clip.

[0034] 9. The bolt holes of this utility model facilitate the quick assembly and disassembly of the plate locking component and other structural components, and the positioning pins facilitate the quick positioning of the plate locking component during installation, which helps to improve product quality.

[0035] 10. The board connector provided by this utility model has the same beneficial effects as the above-mentioned board locking component, and will not be described in detail here.

[0036] 11. In the board connector provided by this utility model, the board locking component can be directly fixed to both ends of the board slot in an integral molding manner, or it can be indirectly fixed to both ends of the board slot through the substrate, which is beneficial to meet different market demands. When the board locking component is indirectly fixed to both ends of the board slot through the substrate, it also enables the board connector to be used for reliable fixing of boards of different lengths as needed. Attached Figure Description

[0037] Figure 1 This is a front view structural diagram of the locking mechanism of the circuit board when the middle ear buckle is in the locked position.

[0038] Figure 2 for Figure 1 Top view of the structure;

[0039] Figure 3 for Figure 1 A schematic diagram of the three-dimensional structure (I);

[0040] Figure 4 for Figure 1 A schematic diagram of the three-dimensional structure (II);

[0041] Figure 5 This is a front view diagram of the locking mechanism of the circuit board when the middle ear buckle is in the unlocked position.

[0042] Figure 6 for Figure 5 Top view of the structure;

[0043] Figure 7 for Figure 5 A schematic diagram of the three-dimensional structure (I);

[0044] Figure 8 for Figure 5 A schematic diagram of the three-dimensional structure (II);

[0045] Figure 9 This is a schematic diagram of the main structure of the ear clip;

[0046] Figure 10 A schematic diagram of the three-dimensional structure of the ear loop (I);

[0047] Figure 11 A schematic diagram of the three-dimensional structure of the ear loop (II);

[0048] Figure 12 This is a schematic diagram of the main structure of the card slot;

[0049] Figure 13 This is a top view of the cassette deck.

[0050] Figure 14 A schematic diagram of the three-dimensional structure of the card slot (I);

[0051] Figure 15 Schematic diagram of the three-dimensional structure of the card holder (II);

[0052] Figure 16 This is a schematic diagram of the three-dimensional structure of the elastic positioning piece;

[0053] Figure 17 A schematic diagram of the planar structure when the board connector locks the board;

[0054] Figure 18 for Figure 17 A schematic diagram of the three-dimensional structure;

[0055] Figure 19 A schematic diagram of the planar structure when the board connector is released from locking the board;

[0056] Figure 20 for Figure 19 A schematic diagram of the three-dimensional structure.

[0057] The markings in the diagram are as follows: 1. Card holder, 2. Ear clip, 3. Receiving groove, 4. Card slot, 5. Main body, 6. Actuating component, 7. Locking pin, 8. Elastic clamping assembly, 9. Elastic positioning piece, 10. Positioning section, 11. Elastic section, 12. Elastic positioning part, 13. Vertical groove, 14. Vertical notch, 15. Locking point, 16. Hinge part, 17. Recessed part, 18. Limiting step, 19. Connecting ear plate, 20. Positioning post, 21. Card slot, 22. Base plate, 23. Protrusion. Detailed Implementation

[0058] Example 1

[0059] like Figure 1-15 As shown, this embodiment provides a plate locking component, which includes a plate base 1 and an ear latch 2, to... Figure 1 Taking the example shown, the card holder 1 is roughly rectangular in shape, with receiving grooves 3 and card slots 4 on its left and right sides, respectively. The ear clip 2 includes an integrally formed main body 5 and an actuating component 6. The middle and lower parts of the main body 5 are respectively provided with a locking point 15 and a hinge part 16. The receiving groove 3 is provided with a locking point groove that mates with the locking point 15 and a hinge groove that mates with the hinge part 16. The main body 5 is rotatably installed in the receiving groove 3 through the hinge part 16 and the hinge groove. The actuating component 6 is located outside the receiving groove 3. One end of the actuating component 6 is a actuating part, and the other end is provided with a locking pin 7 that matches the locking notch on the card. The card slot 4 is provided with an elastic clamping assembly 8 that automatically centers and fixes the card from the front and back direction.

[0060] It should be noted that the aforementioned elastic clamping component 8 automatically centers and fixes the card from the front and back direction, meaning that it serves to center the card when it is inserted into the card slot 21, and elastically clamps and fixes the card from the front and back direction after it is inserted into the card slot 21. This embodiment does not limit the specific structure of the elastic clamping component 8, as long as it can perform the aforementioned functions. For example, the elastic clamping component 8 can adopt two sets of elastic structures fixed by hemispheres and springs. By opening symmetrical limiting holes on both sides of the card slot 4, the two sets of elastic structures are respectively placed in the limiting holes, and the spherical part of the hemisphere protrudes from the side wall of the card slot 4.

[0061] like Figure 13 As shown, in this embodiment, a raised strip is integrally formed on the bottom wall (the vertical wall corresponding to the left and right ends of the card) located between the two side walls inside the card slot 4. This raised strip is used to restrict the movement of the card from the left and right directions. The raised strip is set vertically along the bottom wall, and the upper end of the raised strip has a bevel to facilitate guiding the card into the slot smoothly. When the card is actually installed, after the card is inserted into the slot, the raised strips at both ends of the slot clamp the card from the left and right ends, preventing the card from shaking.

[0062] like Figure 3 , 4 As shown in Figures 7, 8, 10, and 11, in this embodiment, the locking pin 7 is formed by reducing the thickness of the middle portion of the actuating member 6. See details from the direction directly opposite the locking pin 7. Figure 8 The locking pin 7 has an H-shaped structure on the actuating part 6, which gives the locking pin 7 sufficient structural strength to ensure a better locking effect on the board through the locking notch.

[0063] like Figure 9-11 As shown in Figures 14-15, in this embodiment, a rotation limiting structure is also provided between the main body 5 and the receiving groove 3. This rotation limiting structure includes recesses 17 symmetrically arranged on both sides of the main body 5 and limiting steps 18 symmetrically arranged at the lower part of the receiving groove 3. The limiting steps 18 are formed by reducing the width of the lower part of the receiving groove 3, or in other words, the limiting steps 18 are formed by the lower two sides of the receiving groove 3 protruding towards each other. When the main body 5 is controlled to rotate outwards from the receiving groove 3 until the recesses 17 contact the limiting steps 18, the recesses 17 on the main body 5 are blocked by the limiting steps 18, and the main body 5 is restricted from continuing to rotate, thus avoiding the main body 5 from being unfavorable to the fixing of the board due to a large rotation angle. It should also be noted that when the main body 5 is restricted from rotating, the actuating member 6 is equivalent to being in the unlocked position, at which time the locking pin 7 is in the state of being disengaged from the board locking notch.

[0064] The board locking components provided in this embodiment are typically used in pairs to fix the board slot 21 at both ends. Figure 1-4A schematic diagram of the structure is shown when a single board locking component is in the locked position. At this time, the ear buckle 2 is rotated to the vertical position, the toggle 6 is located directly above the card holder 1, and the locking pin 7 is just inserted into the locking notch of the board. The board will be fixed in the board slot 21 and cannot move. Figure 5-8 A schematic diagram is shown of a single card locking component in the unlocked position. At this time, the ear buckle 2 is rotated to an inclined position, the toggle 6 is located on one side of the card holder 1, the locking pin 7 disengages from the locking notch of the card, and the card can be removed from the card slot 21.

[0065] Furthermore, Figure 17-18 This diagram illustrates the structure that uses a board locking mechanism to secure the board in the board slot 21. Figures 19-20 The diagram shows the structure when the latch 2 on the board locking component is in the unlocked position and the board can be removed from the board slot 21. When it is necessary to fix the board, align both ends of the board with the slot 4 and insert it from top to bottom. During the downward insertion, under the clamping action of the elastic clamping component 8, the lower end of the board will automatically align with the board slot 21 without shifting, thus allowing the board to automatically center and enter the board slot 21. After the board is inserted into the board slot 21, rotate the latch 2 until the locking pin 7 engages with the locking notch of the board, completing the fixing of the board. At this time, with the cooperation of the locking pin 7 and the board slot 21, the cooperation of the board locking components at both ends of the board slot 21, and the action of the elastic clamping component 8, the board can be fully fixed from six directions: top, bottom, left, right, front, and back, thereby effectively improving the stability and reliability of the board during and after fixing. Additionally, when it is necessary to remove the board, rotate the ear clip 2 to disengage the locking pin 7 from the locking notch on the board, and then pull the board out by applying upward force.

[0066] Example 2

[0067] Based on Example 1, this example further optimizes the elastic clamping component 8.

[0068] like Figure 2-3 As shown in Figures 6-8 and 13-15, in this embodiment, the elastic clamping assembly 8 includes elastic positioning pieces 9 symmetrically fixed on both sides of the card slot 4. Each elastic positioning piece 9 has an elastic positioning portion 12 protruding from the side wall of the card slot 4. The distance between the elastic positioning portions 12 on both sides of the card slot 4 is slightly less than the thickness of the card, and the center line between the two elastic positioning portions 12 coincides with the axis of the card slot 21. In practical applications, the elastic clamping assembly 8 can automatically center and clamp the card through the elastic positioning portions 12, thereby ensuring the card is stably and reliably fixed in the card slot 21.

[0069] Furthermore, the card holder 1 is provided with at least one set of grooves, typically two sets. Each set of grooves includes two vertical slots 13 symmetrically arranged on both sides of the card slot 4. Each vertical slot 13 has a vertical notch 14 in the middle that communicates with the card slot 4. The width of the vertical notch 14 is smaller than the width of the vertical slot 13. Elastic positioning pieces 9 are respectively embedded in the vertical slots 13, and the elastic positioning parts 12 protrude from the side wall of the card slot 4 through the vertical notch 14.

[0070] Specifically, such as Figure 16 As shown, the elastic positioning piece 9 includes an integrally formed positioning section 10 and an elastic section 11. An elastic positioning part 12 is located at the end of the elastic section 11. The width of the positioning section 10 is greater than the width of the elastic section 11. The positioning section 10 and the elastic section 11 are connected by a slope. The width of the positioning section 10 matches the width of the vertical groove 13, and the width of the elastic section 11 matches the width of the vertical notch 14. After the elastic positioning piece 9 is inserted into the vertical groove 13, the elastic positioning part 12 enters the slot 4 through the vertical notch 14. The positioning section 10 serves to prevent the elastic positioning piece 9 from moving.

[0071] Furthermore, such as Figure 16 As shown, the elastic positioning part 12 has an arc-shaped structure. This arc-shaped elastic positioning part 12 is formed by recessing one side of the elastic positioning piece 9 and making the other side protrude. In this embodiment, the arc-shaped elastic positioning part 12 is used, which not only facilitates the smooth downward insertion of the board without damaging it, but also appropriately increases the contact area between the elastic positioning part 12 and the board, thereby improving the stability of the board's front and rear fixation.

[0072] It should be noted that in this embodiment, the number of elastic positioning parts 12 on the elastic positioning piece 9 is usually one, but it can also be set to multiple as needed.

[0073] Example 3

[0074] Based on Example 2, this example further optimizes the elastic clamping component 8.

[0075] As shown in 2-3, 6-8, and 13-15, in this embodiment, the vertical groove 13 passes through the upper and lower ends of the card holder 1. There are two elastic positioning pieces 9 in each vertical groove 13, and the elastic positioning pieces 9 in each vertical groove 13 are arranged symmetrically, which can effectively improve the clamping and fixing effect of the card.

[0076] Specifically, within each vertical slot 13, the sum of the lengths of the two elastic positioning pieces 9 is approximately the same as the length of the vertical slot 13, and the positioning segments 10 of the two elastic positioning pieces 9 are located at the upper and lower ends of the vertical slot 13, respectively. In this embodiment, the cooperation of multiple elastic positioning pieces 9 allows for the formation of multiple clamping and fixing points on the circuit board from the front and rear directions during use, thereby further improving the fixing effect of the circuit board.

[0077] Example 4

[0078] Based on any of the embodiments in Examples 1-3, this embodiment further optimizes the structure of the card holder 1.

[0079] like Figure 1-8 As shown in Figures 12-15, in this embodiment, the lower end of the card holder 1 is provided with symmetrical connecting ear plates 19 on both sides. The connecting ear plates 19 are perpendicular to the card holder 1, and bolt holes are also provided on the connecting ear plates 19. In actual use, the card holder 1 can be fixed by bolts and bolt holes.

[0080] like Figure 1 , 5 As shown in Figures 1 and 12, in this embodiment, the bottom of the card holder 1 is also provided with two positioning posts 20 protruding from the bottom surface. When fixing the card holder 1, the position of the card holder 1 can be pre-positioned by the positioning posts 20, thereby ensuring the fixing accuracy of the card locking component.

[0081] Example 5

[0082] This embodiment provides a board connector, which includes a board slot 21 and a board locking component provided in any of the above embodiments, such as... Figure 17-20 As shown, there are two board locking components, which are symmetrically fixed at both ends of the board slot 21.

[0083] like Figure 17-20 As shown, in this embodiment, the board connector also includes a base plate 22, the board slot 21 is fixed on the base plate 22, and the card holder 1 of the board locking member is symmetrically fixed at both ends of the board slot 21 through the base plate 22.

[0084] Specifically, the lower end of the card holder 1 is provided with symmetrical connecting ear plates 19 on both sides. The connecting ear plates 19 are provided with bolt holes. Correspondingly, the base plate 22 is provided with corresponding bolt holes. The base plate 22 and the card holder 1 are fixed together by bolts and bolt holes, which facilitates the installation and removal of the card locking parts on the base plate 22.

[0085] Specifically, the bottom of the card holder 1 is provided with two positioning posts 20 protruding from the bottom surface. Correspondingly, the base plate 22 is provided with corresponding positioning holes. By pre-inserting the positioning posts 20 into the positioning holes, it is convenient to accurately position the card holder 1 when it is installed.

[0086] It should be noted that the board locking component in this embodiment can be directly fixed to both ends of the board slot 21 in an integral molding manner, or it can be indirectly fixed to both ends of the board slot 21 through the base plate 22. When the board locking component is directly fixed to both ends of the board slot 21, the connector is suitable for fixing boards of a single length. When the board locking component is indirectly fixed to both ends of the board slot 21 through the base plate 22, the connector can be applied to fixing boards of different lengths as needed.

[0087] The above description is only a specific embodiment of the present utility model. Any feature disclosed in this specification may be replaced by other equivalent or similar features unless otherwise specified. All features or steps in all methods or processes disclosed may be combined in any way except for mutually exclusive features and / or steps.

Claims

1. A locking mechanism, comprising a card holder (1) and an ear loop (2), wherein the card holder (1) has a receiving groove (3) and a card slot (4) on both sides, characterized in that: The ear clip (2) includes an integrally formed main body (5) and a toggle part (6). The main body (5) is rotatably installed in the receiving groove (3), and the toggle part (6) is located outside the receiving groove (3). One end of the toggle part (6) is a toggle part, and the other end is provided with a locking pin (7) that matches the locking notch on the card. The card slot (4) is provided with an elastic clamping component (8) that automatically centers and fixes the card from the front and back direction.

2. The board lock of claim 1, wherein: The elastic clamping assembly (8) includes elastic positioning pieces (9) symmetrically fixed on both sides of the card slot (4). The elastic positioning pieces (9) are provided with elastic positioning parts (12) protruding from the side wall of the card slot (4). The distance between the elastic positioning parts (12) is less than the thickness of the card. The elastic clamping assembly (8) automatically centers and clamps the card through the elastic positioning parts (12).

3. The board lock of claim 2, wherein: The card holder (1) is provided with at least one set of grooves, each set of grooves including two vertical slots (13) symmetrically arranged on both sides of the card slot (4), each vertical slot (13) having a vertical notch (14) communicating with the card slot (4); the elastic positioning pieces (9) are respectively embedded in the vertical slots (13), and the elastic positioning part (12) protrudes from the side wall of the card slot (4) through the vertical notch (14).

4. The plate locking component according to claim 3, characterized in that: The elastic positioning piece (9) includes an integrally formed positioning section (10) and an elastic section (11). The elastic positioning part (12) is located at the end of the elastic section (11). The width of the positioning section (10) is greater than the width of the elastic section (11). The positioning section (10) and the elastic section (11) are connected by a slope. The width of the positioning section (10) is adapted to the width of the vertical groove (13). The width of the elastic section (11) is adapted to the width of the vertical notch (14).

5. The plate locking component according to claim 2, characterized in that: The elastic positioning part (12) has an arc-shaped structure, which is formed by recessing one side of the elastic positioning piece (9) and making the other side protrude.

6. The board lock of claim 3, wherein: The vertical groove (13) passes through the upper and lower ends of the card holder (1). There are two elastic positioning pieces (9) in each vertical groove (13), and the elastic positioning pieces (9) in each vertical groove (13) are arranged symmetrically.

7. The plate locking component according to claim 1, characterized in that: The card slot (4) has an integrally formed protrusion (23) on the bottom wall located between the two side walls for restricting the movement of the card from the left and right directions.

8. The plate locking component according to claim 1, characterized in that: The card holder (1) has symmetrical connecting ear plates (19) on both sides of its lower end. Bolt holes are provided on the connecting ear plates (19). The bottom of the card holder (1) has two positioning posts (20) protruding from the bottom surface.

9. A board connector, characterized by: It includes a board slot (21) and a board locking member as described in any one of claims 1-8, wherein the board locking member is symmetrically fixed at both ends of the board slot (21).

10. The board connector according to claim 9, characterized in that: The board connector also includes a base plate (22), the board slot (21) is fixed on the base plate (22), and the card holder (1) of the board locking member is symmetrically fixed at both ends of the board slot (21) through the base plate (22).

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