Keyboard positioning tool and keyboard testing device

Abstract

The application relates to a keyboard positioning tool and a keyboard testing device. The keyboard positioning tool comprises a base plate, a bearing assembly and a limiting assembly. The bearing assembly is detachably connected to one side of the base plate along a first direction. The bearing assembly is provided with a connecting hole along the first direction. The bearing assembly comprises a first bearing piece and a second bearing piece located on both sides of the connecting hole along a second direction. The first bearing piece and the second bearing piece are used for bearing a keyboard. The second direction intersects the first direction. At least part of the limiting assembly is located inside the connecting hole. The limiting assembly comprises a fixing piece connected to the base plate, and a first telescopic piece and a second telescopic piece movably connected to the fixing piece along the second direction. The bearing assembly comprises a first wall and a second wall oppositely arranged at both ends of the connecting hole along the second direction. The first telescopic piece is press-connected to the first wall, and the second telescopic piece is press-connected to the second wall. In the embodiment, the keyboard positioning tool and the keyboard testing device can guarantee the positioning effect of the keyboard.

Description

Technical Field

[0001] This application relates to the field of keyboard testing equipment technology, and in particular to a keyboard positioning fixture and a keyboard testing device. Background Technology

[0002] Security screening machines are devices used for security checks, widely applied in airports, train stations, ports, government offices, large event venues, and other locations. They are primarily used to detect whether luggage, packages, and personnel are carrying prohibited items. Operating a security screening machine requires a dedicated keyboard, which serves as the interface between the machine and the operator. This keyboard is used very frequently, and its test data plays a crucial role in the machine's operation.

[0003] During keyboard testing, it is necessary to ensure the keyboard's positioning accuracy. Utility Model Content

[0004] The keyboard positioning fixture and keyboard testing device provided in this application embodiment can ensure the positioning effect of the keyboard.

[0005] In a first aspect, embodiments of this application provide a keyboard positioning fixture, comprising:

[0006] substrate;

[0007] A support assembly is detachably connected to one side of the substrate along a first direction. The support assembly has a connection hole along the first direction. The support assembly includes a first support member and a second support member located on both sides of the connection hole along a second direction. The first support member and the second support member are used to support the keyboard. The second direction intersects with the first direction.

[0008] A limiting component, at least a portion of which is located inside the connecting hole, the limiting component including a fixing member connected to the substrate and a first telescopic member and a second telescopic member movably connected to the fixing member along the second direction;

[0009] The load-bearing component includes a first wall and a second wall disposed opposite to each other at both ends of the connection hole along the second direction, wherein the first telescopic member is pressed against the first wall and the second telescopic member is pressed against the second wall.

[0010] In some embodiments, the projection of the first telescopic member in the first direction overlaps with the projection of the bearing component in the first direction, and the projection of the second telescopic member in the first direction overlaps with the projection of the bearing component in the first direction.

[0011] In some embodiments, the connecting hole includes a through-hole structure disposed along the first direction through the bearing component and a first groove and a second groove located on both sides of the through-hole structure along the second direction, wherein the first groove and the second groove are both in communication with the through-hole structure;

[0012] A portion of the structure of the first telescopic member is located inside the first groove, and a portion of the structure of the second telescopic member is located inside the second groove.

[0013] In some embodiments, the first wall includes a first portion located on one side of the through-hole structure along the second direction and a second portion located on one side of the first groove along the second direction, wherein the distance between the second portion and the substrate in the first direction gradually increases in a direction away from the first portion;

[0014] The end of the first telescopic member facing the first wall is pressed against the second part.

[0015] In some embodiments, the carrier assembly further includes a third carrier member, wherein the first carrier member and the second carrier member are connected to both ends of the third carrier member along the second direction, the connecting hole is disposed on the third carrier member, and the first carrier member and the second carrier member protrude from the side of the third carrier member away from the substrate in the first direction;

[0016] The first support member is spaced apart from the first wall in the second direction, and the second support member is spaced apart from the second wall in the second direction.

[0017] In some embodiments, the end of the first telescopic member facing the first wall along the first direction includes a third portion and a fourth portion connected to each other, the fourth portion being located on the side of the third portion away from the substrate;

[0018] The third portion protrudes from the fourth portion in the second direction, and the distance between the fourth portion and the substrate in the first direction gradually increases in the direction away from the third portion.

[0019] In some embodiments, the fastener is provided with a first telescopic hole extending along the second direction, and the first telescopic member includes a first guide portion and a first crimping portion that are interconnected along the second direction, wherein the first guide portion is slidably connected to the first telescopic hole along the second direction.

[0020] The projected area of ​​the fixing member and the first pressing part in the second direction is larger than the projected area of ​​the first guide part in the second direction. The limiting component also includes a first elastic member sleeved on the outer periphery of the first guide part. The two ends of the first elastic member along the second direction are respectively connected to the fixing member and the first pressing part.

[0021] In some embodiments, the first support member includes a first support portion extending along a third direction and a second support portion connected to one end of the first support portion along the third direction. The size of the first support portion in the first direction gradually increases along the side away from the second support portion. The second support portion protrudes from the first support portion in the first direction. The third direction, the second direction, and the first direction intersect each other.

[0022] Secondly, embodiments of this application provide a keyboard testing device, comprising:

[0023] Base;

[0024] The keyboard positioning fixture has its base plate connected to the base.

[0025] A pressing component is connected to the base and spaced apart from the keyboard positioning fixture. The pressing component is used to press the keys on the keyboard.

[0026] A control unit is communicatively connected to the pressing component, and the control unit is used to control the pressing component.

[0027] In some embodiments, the pressing assembly includes a connecting seat fixedly connected to the base, a first rotating member rotatably connected to the connecting seat around the first direction, a second rotating member rotatably connected to the first rotating member around the first direction, and a sliding member slidably connected to the second rotating member along the first direction, the sliding member being used to press the keys of the keyboard;

[0028] The sum of the extension dimensions of the first rotating component and the second rotating component is greater than the maximum distance between the connecting seat and the keyboard positioning fixture.

[0029] According to the keyboard positioning fixture and keyboard testing device provided in this application, the keyboard positioning fixture is used to position the keyboard to facilitate subsequent operations. The keyboard positioning fixture includes a base plate, a support component, and a limiting component. The base plate supports and mounts the remaining structures in the keyboard positioning fixture. The support component carries the keyboard and is detachably connected to one side of the base plate along a first direction. The limiting component is connected to the base plate and limits the position of the support component on the base plate, thereby achieving a connection between the support component and the base plate. The support component has a connecting hole along the first direction and includes a first support member and a second support member located on both sides of the connecting hole along a second direction. The first and second support members carry the keyboard. The second direction corresponds to the length direction of the keyboard. The first and second support members support the keyboard at different positions along the length direction of the keyboard to provide good support. The distance between the first and second support members in the second direction can be set to accommodate the sizes of multiple keyboard models simultaneously, so that the keyboard positioning fixture provided in this application can be adapted to multiple keyboard models. The limiting assembly includes a fixing member fixedly connected to the substrate and a first telescopic member and a second telescopic member movably connected to the fixing member along a second direction. The bearing assembly includes a first wall and a second wall located at both ends of the connecting hole along the second direction. When the limiting assembly limits the bearing assembly, the first telescopic member presses against the first wall, and the second telescopic member presses against the second wall. The force exerted by the first telescopic member on the first wall is opposite in direction to the force exerted by the second telescopic member on the second wall, so that a certain degree of friction is generated between the first telescopic member and the first wall, and between the second telescopic member and the second wall, to connect the bearing assembly to the limiting assembly, thereby realizing the connection and limiting of the bearing assembly on the substrate. Attached Figure Description

[0030] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0031] Figure 1 A schematic diagram illustrating the interaction between a keyboard and a keyboard positioning fixture, provided for some embodiments of this application;

[0032] Figure 2 A schematic diagram of the first isometric structure of a keyboard positioning fixture provided in some embodiments of this application;

[0033] Figure 3 A schematic diagram of the second isometric structure of a keyboard positioning fixture provided in some embodiments of this application;

[0034] Figure 4 A first side view of a keyboard positioning fixture provided in some embodiments of this application.

[0035] Figure 5 for Figure 4 Cross-sectional view of AA;

[0036] Figure 6 for Figure 5 A magnified view of part B in the middle section;

[0037] Figure 7 A schematic diagram illustrating the positioning of a keyboard positioning fixture's limiting component and a supporting component, provided in some embodiments of this application;

[0038] Figure 8 This is a first exploded structural diagram of a keyboard positioning fixture provided in some embodiments of this application;

[0039] Figure 9 This is a second exploded view of a keyboard positioning fixture provided in some embodiments of this application;

[0040] Figure 10 A third exploded view of a keyboard positioning fixture provided in some embodiments of this application;

[0041] Figure 11 A second side view of a keyboard positioning fixture provided in some embodiments of this application;

[0042] Figure 12 for Figure 11 Cross-sectional view of the C-C section;

[0043] Figure 13 for Figure 12 A magnified view of part D in the middle;

[0044] Figure 14 for Figure 12 A magnified view of part E in the middle;

[0045] Figure 15 This is a first isometric structural schematic diagram of a keyboard testing device provided in some embodiments of this application;

[0046] Figure 16 This is a second isometric structural schematic diagram of a keyboard testing device provided in some embodiments of this application.

[0047] Marker explanation:

[0048] 100. Keyboard; 200. Keyboard positioning fixture;

[0049] 10. Substrate;

[0050] 20. Bearing assembly; 21. First bearing member; 211. First bearing section; 212. Second bearing section; 22. Second bearing member; 221. Third bearing section; 222. Fourth bearing section; 23. Third bearing member;

[0051] 30. Limiting component; 31. Fixing member; 311. First telescopic hole; 312. Second telescopic hole; 32. First telescopic member; 321. First guide part; 322. First crimping part; 33. Second telescopic member; 331. Second guide part; 332. Second crimping part; 34. First elastic member; 35. Second elastic member;

[0052] 41. First support component; 42. Second support component; 43. Third support component; 44. Fourth support component; 45. Fifth support component; 46. Sixth support component;

[0053] K1, connecting hole; K11, through hole structure; K12, first groove; K13, second groove; B1, first wall; B2, second wall;

[0054] M1, Part 1; M2, Part 2; M3, Part 3; M4, Part 4; M5, Part 5; M6, Part 6;

[0055] D1, guide hole; D2, guide post;

[0056] W, position sensor;

[0057] X, first direction; Y, second direction; Z, third direction;

[0058] 300. Keyboard testing device; 301. Base;

[0059] 50. Pressing component; 51. Connecting seat; 52. First rotating component; 53. Second rotating component; 54. Sliding component;

[0060] 60. Data input component; 61. Touch input screen;

[0061] 70. Data output component; 71. Printer.

[0062] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0063] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0064] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0065] Security screening machines are devices used for security checks, widely applied in airports, train stations, ports, government offices, large event venues, and other locations. They are primarily used to detect whether luggage, packages, and personnel are carrying prohibited items. Operating a security screening machine requires a dedicated keyboard, which serves as the interface between the machine and the operator. This keyboard is used very frequently, and its test data plays a crucial role in the machine's operation.

[0066] During keyboard testing, it is necessary to position the keyboard stably. Existing positioning fixtures are insufficient to meet the positioning requirements of different keyboard models.

[0067] In view of this, firstly, please refer to Figure 1 , Figure 2 and Figure 3 This application provides a keyboard positioning fixture 200, which includes a base plate 10, a support component 20, and a limiting component 30. The support component 20 is detachably connected to one side of the base plate 10 along a first direction X. The support component 20 has a connection hole K1 along the first direction X. The support component 20 includes a first support member 21 and a second support member 22 located on both sides of the connection hole K1 along a second direction Y. The first support member 21 and the second support member 22 are used to support the keyboard 100. The second direction Y intersects the first direction X. At least a portion of the limiting component 30 is located inside the connection hole K1. The limiting component 30 includes a fixing member 31 connected to the base plate 10 and a first telescopic member 32 and a second telescopic member 33 movably connected to the fixing member 31 along the second direction Y. The support component 20 includes a first wall B1 and a second wall B2 disposed opposite to each other at both ends of the connection hole K1 along the second direction Y. The first telescopic member 32 is pressed against the first wall B1, and the second telescopic member 33 is pressed against the second wall B2.

[0068] The keyboard positioning fixture 200 provided in this application embodiment is used to position the keyboard 100 to facilitate subsequent operations on the keyboard 100. This keyboard positioning fixture 200 can be applied to a certain testing process of the keyboard 100. For example, when performing key pressure or key life tests on the keyboard 100, the keyboard 100 can be installed and fixed using the keyboard positioning fixture 200 provided in this application embodiment. It is particularly suitable for positioning the keyboard 100 used in security inspection machines.

[0069] Specifically, the keyboard positioning fixture 200 includes a base plate 10, a support component 20, and a limiting component 30. The base plate 10 supports and mounts the remaining structures in the keyboard positioning fixture 200. The base plate 10 can also be connected to other external structures to mount the keyboard positioning fixture 200 to those structures. The support component 20 is detachably connected to one side of the base plate 10 along the first direction X. The support component 20 carries the keyboard 100. Through the detachable connection between the support component 20 and the base plate 10, the support component 20 can be disconnected from the base plate 10, the keyboard 100 can be connected to the support component 20 first, and then the support component 20 carrying the keyboard 100 can be connected to the base plate 10. The limiting component 30 is connected to the base plate 10 and limits the position of the support component 20 on the base plate 10, thereby achieving the connection between the support component 20 and the base plate 10.

[0070] The support assembly 20 has a connection hole K1 along the first direction X. The support assembly 20 includes a first support member 21 and a second support member 22 located on both sides of the connection hole K1 along the second direction Y. The first support member 21 and the second support member 22 are used to support the keyboard 100. The first direction X can be vertical, and the second direction Y can be any direction in the horizontal plane. It is understood that the keyboard 100 has a certain length, width, and height. The height direction of the keyboard 100 corresponds to the first direction X, and the second direction Y corresponds to the length direction of the keyboard 100. The first support member 21 and the second support member 22 support the keyboard 100 at different positions along its length to provide good support. When the keyboard 100 is located on the support assembly 20, the keyboard 100 covers the connection hole K1, and the projection of the center of gravity of the keyboard 100 in the first direction X is located inside the connection hole K1, that is, between the first support member 21 and the second support member 22, to ensure the supporting effect of the support assembly 20 on the keyboard 100. Furthermore, the keys on the keyboard 100 are located on the side of the keyboard 100 away from the support component 20. In order to improve the connection stability between the keyboard 100 and the support component 20, the keyboard 100 and the support component 20 can also be connected by screws. The screws pass through the support component 20 and are connected to the keyboard 100 to connect the keyboard 100 and the support component 20 into a whole, thereby improving the connection stability between the keyboard 100 and the support component 20.

[0071] Different keyboard models 100 typically have different lengths. The dimensions of the connecting hole K1 in the second direction Y can be set according to the model of the keyboard 100 it supports. The distance between the first support member 21 and the second support member 22 in the second direction Y can also be set according to the model of the keyboard 100 it supports. Alternatively, the distance between the first support member 21 and the second support member 22 in the second direction Y can be set to a size that can simultaneously adapt to multiple keyboard models 100, so that the keyboard positioning fixture 200 provided in this application embodiment can be adapted to multiple keyboard models 100.

[0072] The limiting component 30 is connected to the substrate 10. When the carrier component 20 is connected to the substrate 10, at least part of the structure of the limiting component 30 is located inside the connection hole K1, so as to reduce the structural setting on the outer periphery of the carrier component 20. While realizing the limiting and fixing of the carrier component 20, it also reduces the difficulty of installation and cooperation between the keyboard positioning fixture 200 and other structures.

[0073] The limiting component 30 includes a fixing member 31 fixedly connected to the substrate 10, and a first telescopic member 32 and a second telescopic member 33 movably connected to the fixing member along the second direction Y. The bearing component 20 includes a first wall B1 and a second wall B2 located at both ends of the connecting hole K1 along the second direction Y. When the limiting component 30 limits the bearing component 20, the first telescopic member 32 presses against the first wall B1, and the second telescopic member 33 presses against the second wall B2. The force exerted by the first telescopic member 32 on the first wall B1 is opposite in direction to the force exerted by the second telescopic member 33 on the second wall B2, so that a certain degree of friction is generated between the first telescopic member 32 and the first wall B1, and between the second telescopic member 33 and the second wall B2, so as to connect the bearing component 20 to the limiting component 30, thereby realizing the connection and limiting of the bearing component 20 on the substrate 10.

[0074] It is understood that during the movement of the first telescopic member 32 and the second telescopic member 33 relative to the fixing member 31, the first telescopic member 32 and the second telescopic member 33 have a first position and a second position. In the first position, the first telescopic member 32 is pressed against the first wall B1, and the second telescopic member 33 is pressed against the second wall B2. The limiting component 30 connects the bearing component 20 to the substrate 10 and limits and fixes the position of the bearing component 20 on the substrate 10. In the second position, the first telescopic member 32 disengages from the first wall B1, and the second telescopic member 33 disengages from the second wall B2. The limiting effect of the limiting component 30 on the bearing component 20 is released, and the bearing component 20 can be detached from the substrate 10.

[0075] In actual operation, for the support component 20 that does not support the keyboard 100, the first telescopic member 32 and the second telescopic member 33 can be positioned in a second position to detach the support component 20 from the substrate 10. Then, the keyboard 100 can be placed or connected to the support component 20. Next, the support component 20 carrying the keyboard 100 is connected to the substrate 10, with the first telescopic member 32 and the second telescopic member 33 positioned in a first position to ensure the relative position between the support component 20 and the substrate 10.

[0076] In summary, in this embodiment, the keyboard positioning fixture 200 is used to position the keyboard 100 to facilitate subsequent operations on the keyboard 100. The keyboard positioning fixture 200 includes a base plate 10, a support component 20, and a limiting component 30. The base plate 10 supports and mounts the remaining structures in the keyboard positioning fixture 200. The support component 20 supports the keyboard 100 and is detachably connected to one side of the base plate 10 along the first direction X. The limiting component 30 is connected to the base plate 10 and limits the position of the support component 20 on the base plate 10, thereby achieving a connection between the support component 20 and the base plate 10. The support component 20 has a connection hole K1 along the first direction X. The support component 20 includes a first support member 21 and a second support member 22 located on both sides of the connection hole K1 along the second direction Y. The first support member 21 and the second support member 22 are used to support the keyboard 100. The second direction Y corresponds to the length direction of the keyboard 100. The first support member 21 and the second support member 22 support the keyboard 100 at different positions along the length direction of the keyboard 100 to provide good support for the keyboard 100. The distance between the first support member 21 and the second support member 22 in the second direction Y can be set to accommodate the size of multiple keyboard models 100 simultaneously, so that the keyboard positioning fixture 200 provided in this application embodiment can be adapted to multiple keyboard models 100. The limiting component 30 includes a fixing member 31 fixedly connected to the base plate 10 and a first telescopic member 32 and a second telescopic member 33 movably connected to the fixing member along the second direction Y. The support component 20 includes a first wall B1 and a second wall B2 located at both ends of the connecting hole K1 along the second direction Y. When the limiting component 30 limits the support component 20, the first telescopic member 32 presses against the first wall B1, and the second telescopic member 33 presses against the second wall B2. The force exerted by the first telescopic member 32 on the first wall B1 is opposite to the force exerted by the second telescopic member 33 on the second wall B2, so that a certain degree of friction is generated between the first telescopic member 32 and the first wall B1 and between the second telescopic member 33 and the second wall B2, so as to connect the bearing assembly 20 to the limiting assembly 30, thereby realizing the connection and limiting of the bearing assembly 20 on the substrate 10.

[0077] In some embodiments, please refer to Figure 3 , Figure 4 , Figure 5 and Figure 6 The projection of the first telescopic member 32 in the first direction X overlaps with the projection of the bearing component 20 in the first direction X, and the projection of the second telescopic member 33 in the first direction X overlaps with the projection of the bearing component 20 in the first direction X.

[0078] To further enhance the limiting effect of the limiting component 30 on the carrier component 20 and improve the positional stability of the carrier component 20 on the substrate 10, the projection of the first telescopic member 32 in the first direction X can overlap with the projection of the carrier component 20 in the first direction X. A portion of the structure of the first telescopic member 32 abuts against the side of the carrier component 20 away from the substrate 10 in the first direction X, thereby pressing the carrier component 20 onto the substrate 10 and improving the relative positional stability between the carrier component 20 and the substrate 10 in the first direction X. Similarly, the projection of the second telescopic member 33 in the first direction X also partially overlaps with the projection of the carrier component 20 in the first direction X, and a portion of the structure of the second telescopic member 33 also abuts against the side of the carrier component 20 on the substrate 10 in the first direction X, thereby pressing the carrier component 20 onto the substrate 10.

[0079] In some embodiments, please refer to Figure 3 , Figure 4 , Figure 5 and Figure 7 The end of the first telescopic member 32 facing the first wall B1 can be configured as an L-shaped structure, wherein the L-shaped structure includes a side wall extending along a first direction and a side wall extending along a second direction. The side wall extending along the first direction and the side wall extending along the second direction are connected to each other to form a pressing space. The side wall extending along the first direction is pressed against the first wall B1, and the side wall extending along the second direction is pressed against the side of the support assembly 20 away from the substrate 10. The end of the second telescopic member 33 facing the second wall B2 can also be configured as an L-shaped structure and is pressed against the support assembly 20 in the same way as the first telescopic member 32.

[0080] In some embodiments, please refer to Figure 3 , Figure 4 , Figure 5 and Figure 6 The connecting hole K1 includes a through-hole structure K11 extending through the bearing assembly 20 along the first direction X, and a first groove K12 and a second groove K13 located on both sides of the through-hole structure K11 along the second direction Y. Both the first groove K12 and the second groove K13 are connected to the through-hole structure K11. A portion of the structure of the first telescopic member 32 is located inside the first groove K12, and a portion of the structure of the second telescopic member 33 is located inside the second groove K13.

[0081] The fixing member 31 is located inside the through-hole structure K11, and the first groove K12 is located on one side of the through-hole structure K11 along the second direction Y. During the movement of the first telescopic member 32 relative to the fixing member 31, the first telescopic member 32 can move from inside the through-hole structure K11 to inside the first groove K12, so as to contact the support component 20 in the first direction X, thereby restricting the relative positional relationship between the support component 20 and the substrate 10 in the first direction X. Similarly, the second groove K13 is located on the other side of the through-hole structure K11 along the second direction Y. During the movement of the second telescopic member 33 relative to the fixing member 31, the second telescopic member 33 can move from the through-hole structure K11 to inside the second groove K13, so as to contact the support component 20 in the first direction X, thereby restricting the relative positional relationship between the support component 20 and the substrate 10 in the first direction X.

[0082] In some embodiments, please refer to Figure 3 , Figure 4 , Figure 5 and Figure 6 The first wall B1 includes a first portion M1 located on the side of the through-hole structure K11 along the second direction Y and a second portion M2 located on the side of the first groove K12 along the second direction Y. The distance between the second portion M2 and the substrate 10 in the first direction X gradually increases in the direction away from the first portion M1. One end of the first telescopic member 32 facing the first wall B1 is pressed against the second portion M2.

[0083] To simplify the setting of the pressing structure between the first telescopic member 32 and the first wall B1, a portion of the structure on the first wall B1 is set as an inclined surface. By pressing the first telescopic member 32 onto the inclined surface to generate a component force along the second direction Y and a component force along the first direction X on the first wall B1, it is possible to limit the relative position of the bearing component 20 and the substrate 10 in the second direction Y, as well as the relative position of the bearing component 20 and the substrate 10 in the first direction X.

[0084] Specifically, the first wall B1 includes a first portion M1 located on the side of the through hole structure K11 along the second direction Y and a second portion M2 located on the side of the first groove K12 along the second direction Y. The first portion M1 can be arranged along the first direction X, and the second portion M2 is located on the side of the first portion M1 away from the substrate 10. The second portion M2 is inclined, and the distance between the second portion M2 and the substrate 10 in the first direction X gradually increases in the direction away from the first portion M1.

[0085] Optionally, the first telescopic member 32 and the base plate 10 are spaced apart in the first direction X to ensure smooth movement of the first telescopic member 32 relative to the fixing member 31. The first telescopic member 32 and the fixing member 31 can be slidably or rotated relative to each other to achieve pressing and disengagement between the first telescopic member 32 and the first wall B1.

[0086] In some embodiments, please refer to Figure 1 , Figure 2 and Figure 3 The support assembly 20 also includes a third support member 23. The first support member 21 and the second support member 22 are connected to the two ends of the third support member 23 along the second direction Y. A connecting hole K1 is provided in the third support member 23. The first support member 21 and the second support member 22 protrude from the side of the third support member 23 away from the substrate 10 in the first direction X. The first support member 21 is spaced apart from the first wall B1 in the second direction Y, and the second support member 22 is spaced apart from the second wall B2 in the second direction Y.

[0087] To facilitate the structural arrangement of the support assembly 20, the support assembly 20 also includes a third support member 23. A connecting hole K1 is disposed on the third support member 23. The first support member 21 and the second support member 22 are connected to both ends of the third support member 23. The first support member 21 and the second support member 22 protrude from the side of the third support member 23 away from the substrate 10 in the first direction X. When the first support member 21 and the second support member 22 support the keyboard 100, the keyboard 100 and the third support member 23 are spaced apart in the first direction X. At the same time, the protrusion distance of the first support member 21 and the second support member 22 relative to the third support member 23 in the first direction X can be set to be greater than the distance of the limiting component 30 in the first direction X, so that when the keyboard 100 is located between the first support member 21 and the second support member 22, it can be spaced apart from the limiting component 30, thereby reducing the influence of the limiting component 30 on the keyboard 100.

[0088] To facilitate the connection between the first support member 21 and the second support member 22 and the third support member 23, and also to facilitate the setting of the relevant shapes on the first wall B1, the first support member 21 is spaced apart from the first wall B1 in the second direction Y, so as to reserve space at the first wall B1 for easy pressing between the first telescopic member 32 and the first wall B1. Similarly, the second support member 22 is spaced apart from the second wall B2 in the second direction Y, so as to reserve space at the second wall B2 for easy pressing between the second telescopic member 33 and the second wall B2.

[0089] In some embodiments, please refer to Figure 3 , Figure 4 , Figure 5 and Figure 6 The first telescopic member 32, at one end facing the first wall B1, includes a third portion M3 and a fourth portion M4 connected to each other along the first direction X. The fourth portion M4 is located on the side of the third portion M3 away from the substrate 10. The third portion M3 protrudes from the fourth portion M4 in the second direction Y. The distance between the fourth portion M4 and the substrate 10 in the first direction X gradually increases in the direction away from the third portion M3.

[0090] When the keyboard 100 is supported by the first support member 21 and the second support member 22, the keyboard 100 covers the connection hole K1. In order to facilitate the first telescopic member 32 to switch from the first position to the second position and realize the connection between the support component 20 and the substrate 10, the side of the first telescopic member 32 away from the substrate 10 is provided with an inclined surface. By pressing down the first telescopic member 32 by the support component 20, the first telescopic member 32 is driven to switch from the first position to the second position, so as to facilitate the connection between the support component 20 and the substrate 10.

[0091] Specifically, please refer to Figure 5 , Figure 6 , Figure 8 and Figure 9 , Figure 5 and Figure 6 This illustrates the structure in which the support assembly 20 is connected to the base plate 10 when the first telescopic member 32 is in the first position. Figure 8 and Figure 9 The diagram illustrates the structure when the first telescopic member 32 is in the first position and the support assembly 20 is separated from the substrate 10. It is understood that only during the process of the support assembly 20 pressing down on the first telescopic member 32 will the first telescopic member 32 change from the first position to the second position to facilitate the connection between the support assembly 20 and the substrate 10. When the support assembly 20 is connected to the substrate 10, the first telescopic member 32 returns to the first position, limiting the position of the support assembly 20.

[0092] The first telescopic member 32, facing the first wall B1, includes a third portion M3 and a fourth portion M4 connected along the first direction X. The fourth portion M4 is located on the side of the third portion M3 away from the substrate 10. The third portion M3 protrudes from the fourth portion M4 in the second direction Y. The distance between the fourth portion M4 and the substrate 10 in the first direction X gradually increases in the direction away from the third portion M3. During the process of the bearing assembly 20 pressing down on the first telescopic member 32, the bearing assembly 20 acts on the fourth portion M4, generating a component force on the fourth portion M4 away from the first wall B1, so that the first telescopic member 32 moves from the first position to the second position, thereby facilitating the connection between the bearing assembly 20 and the substrate 10.

[0093] Optionally, to facilitate the downward pressing of the support assembly 20 onto the first telescopic member 32, the first wall B1 further includes a fifth portion M5 located on the side of the first portion M1 facing the substrate 10. The fifth portion M5 is inclined, and the distance between the fifth portion M5 and the substrate 10 in the first direction X gradually decreases in the direction away from the first portion M1. The fifth portion M5 is used to contact the fourth portion M4, and the inclination angles of the fifth portion M5 and the fourth portion M4 are the same. Further, during the downward pressing process of the support assembly 20, a guide post D2 can be provided on one of the support assembly 20 and the substrate 10, and a guide hole D1 can be provided on the other. The insertion and engagement relationship between the guide post D2 and the guide hole D1 is used to improve the accuracy of the downward pressing of the support assembly 20 relative to the substrate 10. Multiple sets of guide posts D2 and guide holes D1 can be provided.

[0094] Optionally, to facilitate the pressing of the first telescopic member 32 against the first wall B1, the first telescopic member 32 further includes a sixth portion M6 located on the side of the third portion M3 facing the substrate 10. The third portion M3 protrudes beyond the sixth portion M6 in the second direction Y, and the distance between the sixth portion M6 and the substrate 10 in the first direction X gradually decreases in the direction away from the third portion M3. The sixth portion M6 is used to contact the second portion M2, and the sixth portion M6 and the second portion M2 have the same inclination angle.

[0095] In some embodiments, please refer to Figure 2 , Figure 3 , Figure 10 , Figure 11 and Figure 12 The fixing member 31 is provided with a first telescopic hole 311 extending along the second direction Y. The first telescopic member 32 includes a first guide portion 321 and a first pressing portion 322 connected to each other along the second direction Y. The first guide portion 321 is slidably connected to the first telescopic hole 311 along the second direction Y. The projected areas of the fixing member 31 and the first pressing portion 322 in the second direction Y are both larger than the projected area of ​​the first guide portion 321 in the second direction Y. The limiting component 30 also includes a first elastic member 34 sleeved on the outer periphery of the first guide portion 321. The two ends of the first elastic member 34 along the second direction Y are respectively connected to the fixing member 31 and the first pressing portion 322.

[0096] When the first telescopic member 32 is slidably set along the second direction Y, a corresponding guide structure can be set on the fixing member 31 to ensure that the first telescopic member 32 slides along the second direction Y and ensures that the distance between the first telescopic member 32 and the substrate 10 in the first direction X remains fixed, so as to ensure that a stable force can be generated when the first telescopic member 32 is pressed against the first wall B1.

[0097] Specifically, the fastener 31 is provided with a first telescopic hole 311 extending along the second direction Y. The first telescopic member 32 includes a first guide portion 321 and a first pressing portion 322 connected to each other along the second direction Y. The first guide portion 321 is slidably connected to the first telescopic hole 311 along the second direction Y. The sliding cooperation between the first guide portion 321 and the first telescopic hole 311 ensures that the distance between the first pressing portion 322 and the substrate 10 is fixed, thereby ensuring the pressing effect of the first pressing portion 322 on the first wall B1.

[0098] Furthermore, to facilitate the switching of the first telescopic member 32 between the first position and the second position, the limiting component 30 also includes a first elastic member 34. When the supporting component 20 is not connected to the substrate 10, the first telescopic member 32 is in the first position based on the elastic force of the first elastic member 34. During the pressing process of the supporting component 20, the pressing force of the supporting component 20 overcomes the elastic force of the first elastic member 34, driving the first telescopic member 32 to move from the first position to the second position. When the supporting component 20 is connected to the substrate 10, the supporting component 20 moves from the second position to the first position based on the elastic force of the first elastic member 34, and presses against the first wall B1 of the supporting component 20.

[0099] Specifically, the projected areas of both the fixing member 31 and the first pressing portion 322 in the second direction Y are larger than the projected area of ​​the first guide portion 321 in the second direction Y. The first elastic member 34 is sleeved on the outer periphery of the first guide portion 321, and its two ends are respectively connected to the fixing member 31 and the first pressing portion 322. During the elastic process of the first elastic member 34, one end of the first elastic member 34 is connected to the fixing member 31, and the fixing member 31 is fixed in position, which can provide good support and limitation for the first elastic member 34. The other end of the first elastic member 34 is connected to the first pressing portion 322. By setting the projected area of ​​the first pressing portion 322 in the second direction Y to be larger than the projected area of ​​the first elastic member 34 in the second direction Y, the connection between the first elastic member 34 and the first pressing portion 322 can be facilitated.

[0100] In some embodiments, please refer to Figure 10 , Figure 11 , Figure 12 , Figure 13 and Figure 14 To facilitate the connection between the first telescopic member 32, the second telescopic member 33, and the fixing member 31, two fixing members 31 can be provided. The two fixing members 31 are spaced apart on the base plate 10 along the second direction Y. The first telescopic member 32 is connected to one fixing member 31, and the second telescopic member 33 is connected to the other fixing member 31.

[0101] In this embodiment, the structure of the second telescopic member 33 can be set to the same shape as the structure of the first telescopic member 32, and the structure of the second wall B2 can be set to the same shape as the structure of the first wall B1. The matching relationship between the second telescopic member 33 and the second wall B2 is the same as the matching relationship between the first telescopic member 32 and the first wall B1, and will not be described again here.

[0102] Furthermore, the connection method between the second telescopic member 33 and the fixing member 31 can be the same as the connection method between the first telescopic member 32 and the fixing member 31. Specifically, the fixing member 31 is provided with a second telescopic hole 312 extending along the second direction Y. The second telescopic member 33 includes a second guide portion 331 and a second pressing portion 332 connected to each other along the second direction Y. The second guide portion 331 is slidably connected to the second telescopic hole 312 along the second direction Y, and the second pressing portion 332 is used to press against the second wall B2. The projected area of ​​the fixing member 31 and the second pressing portion 332 in the second direction Y is larger than the projected area of ​​the second guide portion 331 in the second direction Y. The limiting component 30 includes a second elastic member 35 sleeved on the outer periphery of the second guide portion 331. The two ends of the second elastic member 35 along the second direction Y are respectively connected to the fixing member 31 and the second pressing portion 332.

[0103] In some embodiments, please refer to Figure 2 and Figure 3 The first support member 21 includes a first support portion 211 extending along the third direction Z and a second support portion 212 connected to one end of the first support portion 211 along the third direction Z. The size of the first support portion 211 in the first direction X gradually increases along the side away from the second support portion 212. The second support portion 212 protrudes from the first support portion 211 in the first direction X. The third direction Z, the second direction Y and the first direction X intersect each other.

[0104] The third direction Z corresponds to the width direction of the keyboard 100. When the first support member 21 supports the keyboard 100, the extension dimension of the first support part 211 in the third direction Z can be greater than the width dimension of the keyboard 100 to fully support the keyboard 100. One side of the keyboard 100 in the width direction abuts against the side of the second support part 212 facing the first support part 211, and the second support part 212 can limit one side of the keyboard 100 in the width direction.

[0105] In the actual positioning process, the bottom of some models of keyboard 100 is tilted. In order to ensure the flatness of the key side of the keyboard 100, the first support part 211 can be set to tilt. The tilt of the first support part 211 is consistent with the tilt of the bottom of the keyboard 100, so as to level the key side of the keyboard 100.

[0106] To improve the stability of the support assembly 20 in supporting the keyboard 100, the size of the first support portion 211 in the first direction X gradually increases along the side away from the second support portion 212. That is, the end of the first support portion 211 away from the second support portion 212 is higher in the first direction X than the end of the first support portion 211 near the second support portion 212. When the keyboard 100 is placed on the support assembly 20, due to the weight of the keyboard 100, it tends to slide towards the second support portion 212. The second support portion 212 protruding from the first support portion 211 in the first direction X provides a limiting effect on the keyboard 100. Simultaneously, because the first support portion 211 is tilted, the keyboard 100 will not slide away from the second support portion 212 under its own weight, thereby improving the stability of the support assembly 20 in supporting the keyboard 100.

[0107] Optionally, the structure of the second support member 22 is the same as that of the first support member 21. The second support member 22 includes a third support portion 221 extending along the third direction Z and a fourth support portion 222 connected to one end of the third support portion 221 along the third direction Z. The size of the third support portion 221 in the first direction X gradually increases in the direction away from the fourth support portion 222. The fourth support portion 222 protrudes from the first support portion 211 in the first direction X. The second support portion 212 and the fourth support portion 222 are located on the same side of the substrate 10 in the third direction Z.

[0108] In some embodiments, please refer to Figure 2 and Figure 3 The support assembly 20 further includes a first support member 41, which is disposed on the side of the first support portion 211 facing away from the substrate 10 and close to one end of the second support portion 212. The first support member 41 protrudes from the first support portion 211 in the first direction X, and the projected area of ​​the first support member 41 in the first direction X is smaller than the projected area of ​​the first support portion 211 in the first direction X. The hardness of the first support member 41 is less than the hardness of the first support portion 211. And / or, the support assembly 20 includes a second support member 42, which is disposed on the side of the second support portion 212 facing the first support portion 211. The hardness of the second support member 42 is less than the hardness of the second support portion 212.

[0109] To reduce the wear and tear on the keyboard 100 caused by the support assembly 20, a specific support member can be provided at the contact point between the support assembly 20 and the keyboard 100 to provide a certain degree of protection for the keyboard 100. Specifically, at the end of the first support portion 211 facing away from the substrate 10 and close to the second support portion 212, a first support member 41 protrudes from the first support portion 211 in the first direction X. When the keyboard 100 is located on the support assembly 20, the first support member 41 contacts the keyboard 100, and there is a gap between the first support portion 211 and the keyboard 100. Since the projected area of ​​the first support member 41 in the first direction X is smaller than the projected area of ​​the first support portion 211 in the first direction X, the contact area between the support assembly 20 and the keyboard 100 can be reduced, thus reducing the wear area of ​​the support assembly 20 on the keyboard 100. Since the hardness of the first support member 41 is less than the hardness of the first support portion 211, the contact strength between the support assembly 20 and the keyboard 100 can be reduced, thus reducing the wear intensity of the support assembly 20 on the keyboard 100. Specifically, the first support member 41 can be configured as an elastic member.

[0110] The second support member 42 is configured for the same reason as the first support member 41, and will not be described again here. Because the first support portion 211 is inclined, the keyboard 100 tends to slide towards the second support portion 212 under its own weight. The contact force at the connection point between the first and second support portions 211 is relatively large. Therefore, the first support member 41 is preferably located on the side of the first support portion 211 away from the substrate 10 and close to the second support portion 212, and the second support member 42 is located on the side of the second support portion 212 facing the first support portion 211. Optionally, a third support member 43 is provided on the side of the first support portion 211 away from the substrate 10 and away from the second support portion 212. The third support member 43 contacts the first support member 41 and the bottom of the keyboard 100, and the second support member 42 contacts the side of the keyboard 100.

[0111] Optionally, a fourth support member 44 is provided on the side of the third support portion 221 away from the substrate 10 and near the end of the fourth support portion 222, a fifth support member 45 is provided on the side of the fourth support portion 222 facing the third support portion 221, and a sixth support member 46 is provided on the side of the fourth support portion 222 away from the substrate 10 and away from the fourth support portion 222, so as to reduce the wear and tear of the second support member 22 on the keyboard 100.

[0112] In some embodiments, please refer to Figure 2 and Figure 3 The keyboard positioning fixture 200 also includes a position sensor W. When the carrier component 20 is connected to the substrate 10, the position sensor W is located inside the connection hole K1. The position sensor W is used to detect whether the keyboard 100 is carried on the carrier component 20, so as to determine whether to perform subsequent actions.

[0113] Secondly, please refer to Figure 15 and Figure 16 This application provides a keyboard testing device 300, which includes a base 301, a keyboard positioning fixture 200 provided in the first aspect of this application, a pressing component 50, and a control unit. The keyboard positioning fixture 200 is connected to the base 301, and the pressing component 50 is also connected to the base 301 and spaced apart from the keyboard positioning fixture 200. The pressing component 50 is used to press keys on a keyboard 100. The control unit is communicatively connected to the pressing component 50 and is used to control the pressing component 50.

[0114] The keyboard testing device 300 provided in this application embodiment can be used for pressure testing and lifespan testing of the keys on the keyboard 100. During the test, the keyboard 100 is positioned by the keyboard positioning fixture 200, and the control unit controls the pressing assembly 50 to press the keys on the keyboard 100. The control unit can be configured as a programmable logic controller, and the keyboard 100 being tested includes a dedicated operation keyboard 100 for security inspection machines.

[0115] In some embodiments, the pressing assembly 50 includes a connecting seat 51 fixedly connected to the base 301, a first rotating member 52 rotatably connected to the connecting seat 51 in a first direction X, a second rotating member 53 rotatably connected to the first rotating member 52 in a first direction X, and a sliding member 54 slidably connected to the second rotating member 53 along the first direction X. The sliding member 54 is used to press the keys of the keyboard 100. The sum of the extension dimensions of the first rotating member 52 and the second rotating member 53 is greater than the maximum distance between the connecting seat 51 and the keyboard positioning fixture 200.

[0116] To facilitate pressing all keys on the keyboard 100 by the pressing component 50, the pressing component 50 covers the pressing range by rotating in a first direction X and performs the pressing action by sliding along the first direction X. Specifically, the pressing component 50 includes a connecting seat 51 fixedly connected to the base 301, a first rotating member 52 rotatably connected to the connecting seat 51 in a first direction X, a second rotating member 53 rotatably connected to the first rotating member 52 in a second direction Y, and a sliding member 54 slidably connected to the second rotating member 53 along the first direction X. The first rotating member 52 and the second rotating member 53 can rotate relative to each other, which can improve the positional flexibility of the sliding member 54 relative to the base plate 10. By adjusting the rotation angle of the first rotating member 52 relative to the connecting seat 51 and the rotation angle of the second rotating member 53 relative to the first rotating member 52, the sliding member 54 can correspond to different keys on the keyboard 100. When the pressing component 50 needs to perform a pressing action, the sliding member 54 slides along the first direction X relative to the second rotating member 53 and contacts the key on the keyboard 100.

[0117] In some embodiments, the keyboard testing device 300 includes a data input component 60, which is communicatively connected to the control unit. The data input component 60 includes a touch input screen 61, which is connected to the base 301. And / or, the keyboard testing device 300 further includes a data output component 70, which is communicatively connected to the control unit. The data output component 70 includes a printer 71, which is connected to the base 301.

[0118] During the testing of keyboard 100, the tester inputs preset conditions into the control unit via data input component 60. The control unit then controls the pressing component 50 to execute the corresponding pressing action. For example, the tester can input the preset conditions via touch input screen 61. When the control unit controls the pressing component 50 to complete the execution of the preset conditions, the test data can be output by data output component 70. For example, data output component 70 includes printer 71, which directly generates a print file from the test data.

[0119] Optionally, the preset conditions may include pressing pressure, and the slider 54 presses the key according to the input pressing pressure. To monitor the pressure of the slider 54 during the pressing action, a pressure sensor may be provided at the end of the slider 54 facing the substrate 10. The pressure sensor detects the actual pressing pressure of the slider 54 during the pressing action and can compare the actual pressing pressure with the pressing pressure in the preset conditions, facilitating monitoring of the testing process by the tester. Optionally, the preset conditions may also include the number of presses, pressing speed, key test range, number of key test cycles, etc. The data output component 70 may output data including the tester's number, test time, keyboard 100 number, pressure feedback value, and the effective number of times the key was tested. The printer 71 can generate a paper report from the above output data.

[0120] During the testing of keyboard 100, the position sensor in keyboard positioning fixture 200 can be connected to the control unit for communication. The control unit will only execute the pressing action after receiving a signal from the position sensor. Optionally, the keyboard testing device 300 also includes a power indicator and an emergency stop switch to ensure operational safety.

[0121] The testing logic of the keyboard testing device 300 provided in this application embodiment is as follows: First, the control unit generates the motion trajectory of the pressing component 50 according to the preset conditions of the data input component 60, and the pressing component 50 receives the instruction from the control unit to perform key testing. Second, the pressure sensor collects the pressing pressure value in real time, and the keyboard 100 provides real-time feedback on the pressing effect, which is then fed back to the control unit. Third, the control component compares the pressing pressure in the preset conditions with the actual pressing feedback of the keyboard 100 keys to determine whether the pressing is effective. If the set number of invalid tests is reached, an alarm is triggered and the test is paused, and the touch screen displays the fault location. Fourth, after the test is completed, the data output component 70 automatically generates a test report containing information such as the tester's number, test time, keyboard 100 number, pressure feedback value, and the number of effective presses, and outputs a paper test report through the printer 71.

[0122] The testing process of the keyboard testing device 300 provided in this application embodiment is as follows: First, after the keyboard 100 is fixed and the position sensor detects that the keyboard 100 is fixed in place, the tester inputs preset conditions through the data input component 60. The preset conditions include parameters such as key test range, test mode, pressing pressure, test speed, and number of presses. Second, the pressing action involves pressing the keys sequentially according to the preset conditions. The pressure sensor feeds back pressure data to the control unit, and the pressing effect of the keyboard 100 keys is displayed in real time. Third, the control unit counts the number of effective or ineffective presses based on the real-time feedback of the keys and the pressure value detection, and dynamically adjusts the setting parameters. For example, if the pressure is insufficient, the pressing stroke is increased. Fourth, after the preset conditions are met, the data output component 70 automatically generates a test report and prints it through the printer 71.

[0123] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A keyboard positioning fixture, characterized in that, include: substrate; A support assembly is detachably connected to one side of the substrate along a first direction. The support assembly has a connection hole along the first direction. The support assembly includes a first support member and a second support member located on both sides of the connection hole along a second direction. The first support member and the second support member are used to support the keyboard. The second direction intersects with the first direction. A limiting component, at least a portion of which is located inside the connecting hole, the limiting component including a fixing member connected to the substrate and a first telescopic member and a second telescopic member movably connected to the fixing member along the second direction; The load-bearing component includes a first wall and a second wall disposed opposite to each other at both ends of the connection hole along the second direction, wherein the first telescopic member is pressed against the first wall and the second telescopic member is pressed against the second wall.

2. The keyboard positioning fixture according to claim 1, characterized in that, The projection of the first telescopic member in the first direction overlaps with the projection of the supporting component in the first direction, and the projection of the second telescopic member in the first direction overlaps with the projection of the supporting component in the first direction.

3. The keyboard positioning fixture according to claim 1, characterized in that, The connecting hole includes a through-hole structure that extends through the bearing component along the first direction and a first groove and a second groove located on both sides of the through-hole structure along the second direction, wherein the first groove and the second groove are both connected to the through-hole structure. A portion of the structure of the first telescopic member is located inside the first groove, and a portion of the structure of the second telescopic member is located inside the second groove.

4. The keyboard positioning fixture according to claim 3, characterized in that, The first wall includes a first portion located on one side of the through-hole structure along the second direction and a second portion located on one side of the first groove along the second direction, wherein the distance between the second portion and the substrate in the first direction gradually increases in the direction away from the first portion; The end of the first telescopic member facing the first wall is pressed against the second part.

5. The keyboard positioning fixture according to claim 1, characterized in that, The support assembly further includes a third support member, the first support member and the second support member are connected to both ends of the third support member along the second direction, the connection hole is provided in the third support member, and the first support member and the second support member protrude from the side of the third support member away from the substrate in the first direction; The first support member is spaced apart from the first wall in the second direction, and the second support member is spaced apart from the second wall in the second direction.

6. The keyboard positioning fixture according to claim 1, characterized in that, The first telescopic member includes a third part and a fourth part connected to each other along the first direction at one end facing the first wall, wherein the fourth part is located on the side of the third part away from the substrate; The third portion protrudes from the fourth portion in the second direction, and the distance between the fourth portion and the substrate in the first direction gradually increases in the direction away from the third portion.

7. The keyboard positioning fixture according to claim 1, characterized in that, The fastener is provided with a first telescopic hole extending along the second direction. The first telescopic member includes a first guide portion and a first pressing portion that are connected to each other along the second direction. The first guide portion is slidably connected to the first telescopic hole along the second direction. The projected area of ​​the fixing member and the first pressing part in the second direction is larger than the projected area of ​​the first guide part in the second direction. The limiting component also includes a first elastic member sleeved on the outer periphery of the first guide part. The two ends of the first elastic member along the second direction are respectively connected to the fixing member and the first pressing part.

8. The keyboard positioning fixture according to claim 1, characterized in that, The first support member includes a first support portion extending along a third direction and a second support portion connected to one end of the first support portion along the third direction. The size of the first support portion in the first direction gradually increases along the side away from the second support portion. The second support portion protrudes from the first support portion in the first direction. The third direction, the second direction, and the first direction intersect each other.

9. A keyboard testing device, characterized in that, include: Base; The keyboard positioning fixture according to any one of claims 1-8, wherein the base plate is connected to the base; A pressing component is connected to the base and spaced apart from the keyboard positioning fixture. The pressing component is used to press the keys on the keyboard. A control unit is communicatively connected to the pressing component, and the control unit is used to control the pressing component.

10. The keyboard testing device according to claim 9, characterized in that, The pressing assembly includes a connecting seat fixedly connected to the base, a first rotating member rotatably connected to the connecting seat around the first direction, a second rotating member rotatably connected to the first rotating member around the first direction, and a sliding member slidably connected to the second rotating member along the first direction. The sliding member is used to press the keys of the keyboard. The sum of the extension dimensions of the first rotating component and the second rotating component is greater than the maximum distance between the connecting seat and the keyboard positioning fixture.

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