Single board test fixture

Abstract

The embodiment of the invention discloses a single board test fixture. The single board test fixture comprises a fixture base, a positive insertion module, a side insertion module and a mechanical fool-proof mechanism, an interlocking assembly and a fool-proof auxiliary part of the mechanical fool-proof mechanism can be adaptively switched between a first locking state and a second locking state, the first locking state is used for limiting the positive insertion module to be switched from a plug-in position to a disengagement position, and the second locking state is used for limiting the side insertion module to be switched from a plug-in position to a disengagement position. The second locking state is used for limiting the side insertion module to be switched to the opposite insertion position from the separation position; according to the mechanical fool-proof mechanism, linkage between the insertion module and the positive insertion module is established through the flexible traction piece, and the flexible traction piece is positioned and guided through the reversing pulley arranged on the arrangement path of the flexible traction piece. According to the arrangement, a reliable interlocking relation can be formed through the two locking pieces, the possibility of misoperation of the positive insertion module and the side insertion module can be completely avoided, fool-proof is effectively achieved, and product damage is prevented. In addition, based on the mechanical fool-proof mechanism, the electrical influence can be completely avoided, and the mechanical fool-proof mechanism has high operation reliability.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of single board testing technology, and in particular to a single board testing fixture. Background Art

[0002] A complex single board usually includes various types of interfaces, and the insertion directions of various interfaces on the board cannot be completely consistent. There are intersections in orthogonal directions, that is, front insertion perpendicular to the board surface and side insertion parallel to the board surface, among which side insertion includes front and rear side insertion and left and right side insertion.

[0003] When testing a single board, different interfaces need to be docked on the test fixture. The corresponding docking actions include vertical positive plug-in and horizontal side plug-in, which are respectively implemented by different operating handles. Operate the handle of the positive plug-in module group to lift the carrier board and the single board placed on it to the set height to achieve the docking of the positive plug-in connector with the positive plug-in interface to be tested; for the single board at the set height, operate the handle of the side plug-in module group to achieve the docking of the side plug-in connector with the side plug-in interface to be tested. In other words, the docking operation of the positive plug-in interface is performed first, and then the docking operation of the side plug-in interface is performed.

[0004] The operation sequence of the board on and off the test fixture is the opposite, that is, first release the side plug relationship, and then lower the carrier board and the board from the set height. If the side plug connector is still in the side plug interface, operating the positive plug handle to make the board fall with the carrier board will damage the interface on the main board and cause product damage. Alternatively, when the side plug connector is in the opposite plug position, performing the lifting operation will crush the product because the side plug connector is not avoided. Summary of the invention

[0005] The embodiment of the present application provides a single board test fixture, which effectively avoids the possibility of single board damage caused by incorrect operation sequence of the side plug-in module and the front plug-in module.

[0006] The first aspect of the embodiment of the present application provides a single-board test fixture, including a fixture base, a front plug-in module group, a side plug-in module group and a mechanical anti-fool mechanism; the front plug-in module group and the side plug-in module group are arranged on the fixture base, the front plug-in module group includes a first operating handle, a first transmission mechanism and a carrier plate, the first transmission mechanism is connected between the first operating handle and the carrier plate, and is used to drive the carrier plate to move up and down and switch between the plug-in position and the disengaged position; the first side plug-in module group includes a second operating handle, a second transmission mechanism and a side plug-in slide plate, the second transmission mechanism is connected between the second operating handle and the side plug-in slide plate, and is used to drive the side plug-in slide plate to move in a horizontal plane and switch between the plug-in position and the disengaged position; the mechanical anti-fool mechanism includes an interlocking component, an anti-fool auxiliary component, Parts, flexible pulling members and reversing pulleys; the interlocking component and the fool-proofing auxiliary member can be adapted to switch between a first locking state and a second locking state, the first locking state is used to limit the positive insertion module group from switching from the plug-in position to the disengaged position, and the second locking state is used to limit the side insertion module group from switching from the disengaged position to the plug-in position; one end of the flexible pulling member is connected to the side of the interlocking component, and the other end of the flexible pulling member and the fool-proofing auxiliary member, one is fixed to the side insertion slide plate or the component of the second transmission mechanism, and the other is fixed to the carrier plate or the component of the first transmission mechanism, for establishing a linkage between the side insertion module group and the positive insertion module group; the reversing pulley is arranged on the arrangement path of the flexible pulling member, for positioning and guiding the flexible pulling member. In this way, the mechanical fool-proofing mechanism provided by the embodiment of the present application is applied, and a reliable interlocking relationship is formed by constructing two locking members moving in different sliding directions. Taking the side plug-in position in the first locking state as an example, the positive plug-in module can be restricted from switching from the plug-in position to the disengaged position. At this time, the positive plug-in handle cannot be operated, which can avoid the possibility that the single board will damage the interface when the side plug connector still stays in the side plug connector and the carrier board descends; taking the positive plug-in position in the second locking state as an example, the side plug-in module can be restricted from switching from the disengaged position to the plug-in position. At this time, the side plug-in handle cannot be operated, which can avoid the possibility that the single board will crush the product when the side plug connector stays in the plug-in position and the carrier board rises. Overall, 100% fool-proofing can be achieved to prevent damage to the product.

[0007] In addition, based on the mechanical anti-foolproofing mechanism provided in the embodiment of the present application, compared with the use of photoelectric sensing and electromagnetic latches to achieve locking of the state of the first operating handle and the state of the second operating handle, this implementation method uses a purely mechanical structure to provide an anti-foolproofing function, which can completely avoid electrical influences and further improve operational reliability.

[0008] In addition, the embodiment of the present application establishes a linkage relationship between the first side plug-in module group and the front plug-in module group through a flexible pulling member. Based on the inherent flexibility of the flexible pulling member, the space can be fully utilized for flexible arrangement, and the overall design and manufacturing cost can be reasonably controlled.

[0009] Exemplarily, the flexible pulling member can be a steel wire rope, or a rope of other structural forms. In addition, the number of the reversing pulleys can be set to multiple, and they are arranged at intervals on the arrangement path of the flexible pulling member to obtain a good positioning and guiding effect.

[0010] Based on the first aspect, the embodiment of the present application also provides a first implementation of the first aspect: the interlocking assembly includes a first locking member, a second locking member and a fixed seat, the first locking member can slide in a first direction relative to the fixed seat to switch between a first locking position and a second locking position, the second locking member is matched with the first locking member, and can slide in a third direction relative to the fixed seat to switch between an extended position and a retracted position, so as to match the anti-fool auxiliary member to switch between a first locking state and a second locking state. In this way, the interlocking assembly and the anti-fool auxiliary member can switch between the locking states through two matched second locking members and the first locking member, which has the characteristics of simple and reliable structure.

[0011] Based on the first aspect, or the first embodiment of the first aspect, the embodiment of the present application also provides a second embodiment of the first aspect: the first locking member includes a sliding portion and an adaptor surface arranged on the sliding portion, the first end of the second locking member can extend out of the fixed seat, and the second end of the second locking member is against the adaptor surface of the first locking member; along the first direction, the size of the adaptor surface in the third direction away from the sliding portion gradually changes, and is configured as: when the first locking member is in the first locking position, the portion of the adaptor surface that is against the second end is close to the sliding portion; when the first locking member is in the second locking position, the portion of the adaptor surface that is against the second end is away from the sliding portion. With such a configuration, when a side-insertion operation is performed, under the pull of the wire rope, the first locking member slides toward the first locking position relative to the fixed seat, and the adapter surface can push the second locking member to slide upward to the extended position relative to the fixed seat; conversely, when a side-insertion disengagement operation is performed, the first locking member slides toward the second locking position relative to the fixed seat, and the second locking member can slide downward to the retracted position relative to the fixed seat based on the adapter surface, which has the characteristics of simple and reliable structure.

[0012] Exemplarily, the adapting surface may be an inclined plane or curved surface.

[0013] Based on the first implementation of the first aspect, or the second implementation of the first aspect, the embodiment of the present application also provides a third implementation of the first aspect: the fool-proofing auxiliary component has a first locking portion and a second locking portion; in the first direction, the first locking portion is used to abut against the second locking component extending from the fixed seat, and the interlocking component and the fool-proofing auxiliary component are adapted to the first locking state; in the third direction, the second locking portion is used to abut against the first end of the second locking component, and the interlocking component and the fool-proofing auxiliary component are adapted to the second locking state. In practical applications, the fool-proofing auxiliary component can be a plate-like structure; or, taking the example of the fixed connection between the fool-proofing auxiliary component and the cam plate of the positive plug-in module, the fool-proofing auxiliary component can also be integrally formed with the cam plate, which has a simple structure and controllable implementation costs.

[0014] In practical applications, at least one of the first end and the second end of the second locking member is configured as a ball structure, and the balls can be respectively embedded in the two ends of the second locking member. Based on the ball structure at the first end, the friction resistance between it and the second locking part of the foolproof auxiliary member can be effectively reduced, and the wear can be reduced; based on the ball structure at the second end, the friction resistance between it and the matching surface of the top surface of the first locking member can also be reduced, and on the basis of effectively reducing the wear, the actuation performance of the corresponding dynamic matching relationship can also be improved.

[0015] In other practical applications, the middle part of the anti-foolproofing auxiliary part may have an avoidance opening, and the second locking part is two sections respectively located on both sides of the avoidance opening; that is, the second locking part on the anti-foolproofing auxiliary part is divided into two sections by the avoidance opening, so as to provide locking limits at the first and last sections of the lifting stroke of the positive insertion module, respectively, which can reduce the actual length of the friction contact of the second locking part on the anti-foolproofing auxiliary part, reduce the wear between the two, and thereby eliminate the ball structure and control the product manufacturing cost.

[0016] Based on the first embodiment of the first aspect, or the second embodiment of the first aspect, or the third embodiment of the first aspect, the embodiment of the present application also provides a fourth embodiment of the first aspect: the interlocking assembly also includes a first elastic reset member and a second elastic reset member; the first elastic reset member is arranged between the first locking member and the fixed seat, and is configured as follows: when the interlocking assembly and the foolproof auxiliary member are adapted to the first locking state, the first elastic reset member is deformed; the second elastic reset member is arranged between the second locking member and the fixed seat, and the second elastic reset member is configured as follows: when the interlocking assembly and the foolproof auxiliary member are adapted to the second locking state, the second elastic reset member is deformed. In this way, after the wire rope is loosened, the first elastic reset member releases elastic deformation energy and acts on the first locking member, so that the first locking member moves quickly to the right; at the same time, after the first locking member moves to the right, the second elastic reset member releases elastic deformation energy and acts on the second locking member, so that the second locking member moves quickly downward, so as to quickly switch to the preparatory first locking state. On the whole, the responsiveness of the interlocking assembly is improved, which provides a technical guarantee for improving the efficiency of the test operation.

[0017] Exemplarily, the first elastic return member and the second elastic return member may be compression springs respectively.

[0018] Based on the fourth implementation of the first aspect, the embodiment of the present application further provides a fifth implementation of the first aspect: the fixing seat is provided with a slide groove and a through hole, the slide groove is arranged along the first direction, the sliding part of the first locking member is built into the slide groove and can slide in the slide groove; the through hole is arranged along the third direction, the second locking member is built into the through hole and can slide in the through hole. In this way, the structural integration of the interlocking assembly is effectively improved, and the occupation of the assembly space can be reduced.

[0019] Exemplarily, the cross-sections of the matching slide groove and the sliding portion may be dovetail-shaped, so as to limit the first locking member from escaping from the slide groove in the third direction, and the structure is simple and reliable.

[0020] Based on the fifth implementation of the first aspect, the embodiment of the present application also provides a sixth implementation of the first aspect: the fixed seat includes a first seat body and a second seat body connected to each other, the slide groove is located on the first seat body, and the through hole is located on the second seat body; a groove is provided on the second seat body below the slide groove, the groove is connected to the slide groove, a first pressing part is fixedly provided in the groove, and a second pressing part is provided on the first locking member; the first elastic reset member is built into the groove, and its two ends are respectively against the first pressing part and the second pressing part. With such a configuration, on the one hand, the fixed seat adopts a split structure, which can improve the processing and assembly processability and reduce the product manufacturing cost; on the other hand, the first elastic reset member is built into the groove below the first locking member, which can further improve the structural integration of the interlocking assembly.

[0021] Based on the fifth embodiment of the first aspect, or the sixth embodiment of the first aspect, the embodiment of the present application further provides a seventh embodiment of the first aspect: the through hole is a stepped hole that is smaller at the top and larger at the bottom, and has a first stepped surface in the stepped hole, and the second locking member is provided with a second stepped surface extending toward the hole wall of the through hole; the second elastic reset member is built into the through hole, and its two ends are respectively against the first stepped surface and the second stepped surface. It has good processing properties and is easy to assemble.

[0022] Based on the first aspect, or the first embodiment of the first aspect, or the second embodiment of the first aspect, or the third embodiment of the first aspect, or the fourth embodiment of the first aspect, or the fifth embodiment of the first aspect, or the sixth embodiment of the first aspect, or the seventh embodiment of the first aspect, the embodiment of the present application also provides an eighth embodiment of the first aspect: the side plug-in module group includes a first side plug-in module group and a second side plug-in module group; the side plug-in slide plate of the first side plug-in module group can be moved in a first direction in a horizontal plane to switch between the plug-in position and the disengagement position, and the side plug-in slide plate of the second side plug-in module group can be moved in a second direction in a horizontal plane to switch between the plug-in position and the disengagement position; there are two mechanical foolproofing mechanisms, and the two mechanical foolproofing mechanisms are respectively arranged in one-to-one correspondence with the first side plug-in module group and the second side plug-in module group. In this way, the mechanical foolproofing function can be provided for the two side plug-in module groups respectively, and the correspondingly arranged mechanical foolproofing mechanisms respectively correspond to the modules that perform side plug-in operations in two different directions. In actual operation, one of the mechanical foolproofing mechanisms is in an interlocking state, which can avoid the problem of board damage caused by misoperation.

[0023] Based on the first aspect, or the first embodiment of the first aspect, or the second embodiment of the first aspect, or the third embodiment of the first aspect, or the fourth embodiment of the first aspect, or the fifth embodiment of the first aspect, or the sixth embodiment of the first aspect, or the seventh embodiment of the first aspect, the embodiment of the present application also provides a ninth embodiment of the first aspect: the side insertion module group includes a first side insertion module group and a second side insertion module group; the side insertion slide plate of the first side insertion module group can be moved in a first direction in a horizontal plane to switch between the insertion position and the disengagement position, and the side insertion slide plate of the second side insertion module group can be moved in a second direction in a horizontal plane to switch between the insertion position and the disengagement position; the interlocking component and the anti-foolproofing auxiliary component of the mechanical anti-foolproofing mechanism are each provided with one, and two flexible pulling members are provided, and the two flexible pulling members are respectively provided in one-to-one correspondence with the first side insertion module group and the second side insertion module group, and reversing pulleys are respectively provided on the arrangement paths of the two flexible pulling members. In this way, for the mechanical anti-foolproofing function between the two side-insertion module groups and the front-insertion module group, the interlocking components and anti-foolproofing auxiliary parts can be shared, and a corresponding linkage relationship can be established based on the corresponding flexible pulling parts. On the basis of reliably avoiding misoperation, the number of parts configurations is reasonably controlled, which can further reduce product costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the overall structure of a single board testing tool provided in an embodiment of the present application;

[0025] Figure 2 A schematic diagram of an interface form of a single board to be tested provided in an embodiment of the present application;

[0026] Figure 3 for Figure 2 Schematic diagram of the insertion process of the standby side board shown in;

[0027] Figure 4 for Figure 1 A schematic diagram formed from another angle of the single board testing tool shown in FIG.

[0028] Figure 5 A schematic diagram of the overall structure of a mechanical fool-proofing mechanism provided in an embodiment of the present application;

[0029] Figure 6 for Figure 5 An exploded view of the assembly of the interlocking components shown in;

[0030] Figure 7 for Figure 5 A cross-sectional view of an adaptation relationship between the interlocking assembly and the foolproof auxiliary component shown in;

[0031] Figure 8 for Figure 5 Another cross-sectional view of the matching relationship between the interlocking assembly and the foolproof auxiliary component shown in ;

[0032] Fig. 9 for Figure 5 DD section view in;

[0033] Fig.10 for Figure 1 The schematic diagram of the single board test tool shown in FIG.

[0034] Fig.11 A schematic diagram of the overall structure of another single board testing tool provided in an embodiment of the present application;

[0035] Fig.12 A partial view of another mechanical fool-proofing mechanism provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] The embodiment of the present application provides a single-board test fixture, which can effectively avoid the possibility of single-board damage caused by incorrect operation of the side-insertion module group and the front-insertion module group through a mechanical fool-proof structure design, and is not affected by the electrical state.

[0037] For ease of description, the terms involved in the embodiments of the present application are first explained as follows.

[0038] Test fixture: A fixture that provides a product testing environment to test or experiment on product functions, power calibration, life, performance and other indicators. It is also called a test fixture.

[0039] Mechanical fool-proofing: It is a preventive and corrective method for operating behaviors through mechanical structures. It uses limiting methods to avoid operating errors, so that operators can correctly perform corresponding operations without paying attention, experience or professional knowledge.

[0040] See also Figure 1 , which is a schematic diagram of the overall structure of a single-board testing tool provided in an embodiment of the present application.

[0041] The single board test fixture 100 includes a fixture base 10, a front plug-in module set 20 and a first side plug-in module set 30. The fixture base 10 is a load-bearing basic component, and the front plug-in module set 20 and the first side plug-in module set 30 are arranged on the fixture base 10 to respectively implement the plug-in test of the front plug-in interface 201 and the side plug-in interface 202 of the single board 200. Figure 2 , which is a schematic diagram of an interface form of a single board to be tested provided in an embodiment of the present application. The single board 200 includes a front plug interface 201 and a side plug interface 202, the plug-in direction of the front plug interface 201 is perpendicular to the board surface of the single board 200, and the plug-in direction of the side plug interface 202 is parallel to the board surface of the single board.

[0042] In this implementation, the positive plug module 20 includes a first operating handle 21, a first transmission mechanism 22 and a carrier plate 23, and the first transmission mechanism 22 is transmission-connected between the first operating handle 21 and the carrier plate 23. By operating the first operating handle 21, the carrier plate 23 can be driven to rise and fall relative to the fixture base 10 through the first transmission mechanism 22, that is, to move in the height direction, thereby driving the single board 200 placed on the carrier plate 23 to rise to a set height, and driving the single board 200 to descend from the set height. The "set height" here means that when the single board 200 rises to the set height, the positive plug interface 201 thereon can be plugged in with the corresponding positive plug connector 24; and, for the single board located at the set height, the side plug interface 202 thereon can be plugged in with the corresponding side plug connector 34. Please refer to Figure 3 , the figure is Figure 2 It should be understood that the "set height" does not refer to a specific height value, and can be determined according to the size of the product on the side in a specific implementation, and the embodiment of the present application does not limit it.

[0043] Specifically, the first transmission mechanism 22 includes a transmission shaft 221, a gear rack mechanism 222, a cam plate 223 and a roller 224. The first operating handle 21 is fixedly connected to the transmission shaft 231, the gear of the gear rack mechanism 222 is coaxially fixed with the transmission shaft 231, the rack of the gear rack mechanism 222 is fixedly arranged on the cam plate 223, and the rack is arranged along the first direction X. A cam groove 2231 is arranged on the cam plate 223, and a roller 224 is arranged on the carrier plate 23, and the roller 224 is adapted to the cam groove 2231 and can slide along the cam groove 2231. In this way, when the first operating handle 21 is operated to rotate, the cam plate 223 can be driven to move along the first direction X through the transmission shaft 231 and the gear rack mechanism 222, and based on the cam groove 2231 obliquely arranged on the cam plate 223, the carrier plate 23 can be lifted and lowered by the roller 224, and switched between the insertion position and the disengagement position.

[0044] In this implementation, the first side plug-in module 30 includes a second operating handle 31, a second transmission mechanism 32 and a side plug-in slide plate 33, and the second transmission mechanism 32 is transmission-connected between the second operating handle 31 and the side plug-in slide plate 33. By operating the second operating handle 31, the side plug-in slide plate 33 can be driven to move in the horizontal plane through the second transmission mechanism 32, and switched between the plug-in position and the disengaged position. That is, it moves along the first direction X toward the side plug-in interface 202 of the single board 200, thereby realizing the plug-in of the side plug-in connector 34 with the side plug-in interface 202. For the convenience of description, the carrier 23 whose bearing surface is arranged in the horizontal direction is used as the description reference, and the two side plug-in directions in the horizontal plane are defined as the first direction X and the second direction Y, respectively, and the height direction of the single board test fixture 100 shown in the figure is defined as the third direction Z.

[0045] like Figure 3 As shown in Figure a, the single board 200 is placed on the carrier 23 and is in an initial preparation state. In the preparation state, the first operating handle is operated, and the carrier 23 can drive the single board 200 to rise to Figure 3 When the height H is set as shown in FIG. b, the positive plug interface 201 on the single board 200 is plugged into the corresponding positive plug connector 24. Next, the second operating handle is operated, and the side plug slide plate 33 can drive the side plug connector 34 to move along the first direction X to Figure 3 When in the position shown in FIG. c, the side plug connector 34 is plugged into the corresponding side plug interface 202 on the single board 2.

[0046] It can be understood that the specific structural implementation of the first transmission mechanism and the second transmission mechanism is not limited to the exemplary structural configuration shown in the figure. As long as the power output by the corresponding operating handle can be transmitted to the plug-in linear motion on the execution side, the embodiments of the present application are not limited.

[0047] In a specific implementation, for a side plug-in interface whose side plug-in direction is the second direction Y (not shown in the figure), the side plug-in slide of the corresponding side plug-in module needs to be displaced along the second direction Y to drive the corresponding side plug-in connector to be plugged into the side plug-in interface.

[0048] It should be noted that the plug-in direction of the front plug-in interface is not limited to being absolutely perpendicular to the board surface, and the plug-in direction of the side plug-in interface is not limited to being absolutely parallel to the board surface. In other specific implementations, for different types of on-board devices, the plug-in directions of the front plug-in interface and the side plug-in interface can also form a certain angle with the direction indicated by the arrow in the figure, and accordingly, the specific movement displacement directions of the front plug-in module and the side plug-in module can be adapted thereto, and the embodiments of the present application do not limit this.

[0049] Based on the single board test fixture 100, the height of the side insertion operation in the horizontal plane is based on the height of the position of the single board 200. When the single board 200 rises to the set height H, the side insertion interface 202 on it can be aligned with the side insertion connector 304, and then the conditions for performing the aforementioned side insertion operation can be met. In other words, the actions of the front insertion module 20 and the first side insertion module 30 need to be performed in a sequential order to avoid product damage caused by misoperation.

[0050] For example, when the first operating handle 21 is operated in the forward direction to drive the carrier 23 to rise, if the side plug connector of the first side plug module 30 is not retracted but remains in the opposite plug position, the rising operation may cause the product to be crushed by the side plug connector that has not been avoided. For another example, when the first operating handle 21 is operated in the reverse direction to drive the carrier 23 to descend, if the second operating handle 31 is not operated to make the side plug connector detach from the side plug interface of the single board, the single board will descend with the carrier 23 and the positive plug interface on the single board will be damaged, which will also cause damage to the product.

[0051] Based on this, the single board test fixture 100 is provided with a mechanical foolproof mechanism, please refer to Figure 4 and Figure 5 ,in, Figure 4 for Figure 1 A schematic diagram of another angle of the single board test tool shown in FIG. Figure 5 A schematic diagram of the overall structure of a mechanical fool-proofing mechanism provided in an embodiment of the present application.

[0052] The mechanical foolproofing mechanism mainly includes an interlocking assembly 40, a foolproofing auxiliary component 50, a steel wire rope 60 and a reversing pulley 70. The interlocking assembly 40 is arranged on the fixture base 10, the foolproofing auxiliary component 50 is fixed to the cam plate 223 of the first transmission mechanism 22, and the interlocking assembly 40 and the foolproofing auxiliary component 50 can be adapted to switch between a first locking state and a second locking state. One end of the steel wire rope 60 is connected to the side insertion slide plate 33 of the first side insertion module group 30, and the other end is connected to the side of the interlocking assembly 40, which is used to establish a linkage relationship between the first side insertion module group 30 and the positive insertion module group 20. A plurality of reversing pulleys 70 are arranged on the arrangement path of the steel wire rope 60 so as to smoothly pull the steel wire rope 60 during operation.

[0053] The interlocking assembly 40 includes a first locking member 41, a second locking member 42 and a fixing seat 43. The first locking member 41 and the second locking member 42 are integrated on the fixing seat 43. The first locking member 41 can slide relative to the fixing seat 43 in a first direction X to switch between a first locking position and a second locking position. The second locking member 42 can slide relative to the fixing seat 43 in a third direction Z to switch between an extended position and an inward position. That is to say, in this implementation, the sliding direction of the first locking member 41 is the first direction X, and the sliding direction of the second locking member 42 is the second direction Y. The sliding directions of the two intersect to establish an interlocking relationship between the two locking members, thereby enabling the interlocking assembly 40 and the foolproof auxiliary member to adapt to switch between the first locking state and the second locking state. Please refer to Figure 6 , Figure 7 and Figure 8 ,in, Figure 6 for Figure 5 An exploded view of the assembly of the interlocking components shown in Figure 7 for Figure 5 The cross-sectional view of the matching relationship between the interlocking component and the foolproof auxiliary component shown in, Figure 8 for Figure 5 Another cross-sectional view of the matching relationship between the interlocking assembly and the foolproof auxiliary component shown in FIG. Here, Figure 7 and Figure 8 The cut positions of the sectional views shown can be found in Figure 5 Section mark CC is shown in .

[0054] Combination Figure 6 As shown, the first locking member 41 includes a sliding portion 412 arranged along the first direction X and an adapting surface 411 arranged on the sliding portion 412, the first end 421 of the second locking member 42 can extend out of the fixing seat 43, and the second end 422 of the second locking member 42 abuts against the adapting surface 411 of the first locking member 41. Figure 7As shown, under the pull of the wire rope 60, when the first locking member 41 slides to the left first locking position relative to the fixing seat 43 along the solid arrow A1, the adapting surface 411 can push the second locking member 42 to slide upward relative to the fixing seat 43 to the extended position along the solid arrow B1. Figure 8 As shown, when the first locking member 41 slides to the right to the second locking position relative to the fixing seat 43 along the dotted arrow A2, the second locking member 42 can slide downward to the retracted position relative to the fixing seat 43 along the dotted arrow B2.

[0055] In general, along the first direction X, the size of the adapting surface 411 in the third direction from the sliding portion 412 changes gradually, and is configured as follows: the first locking member 41 is located at Figure 7 In the first locking position shown in FIG. 1 , the portion of the matching surface 411 that abuts against the second end 422 of the second locking member 42 is close to the sliding portion 412; the first locking member 41 is located at Figure 8 In the second locking position shown, the portion of the matching surface 411 that abuts against the second end 422 of the second locking member 42 is away from the sliding portion 412 .

[0056] One end of the steel wire 60 is connected to the first locking member 41 of the interlocking assembly 40, and the other end is connected to the side insertion slide plate 33 of the first side insertion module 30. When the second operating handle 31 performs the side insertion operation, the side insertion slide plate 33 can pull the first locking member 41 to slide to the left through the steel wire 60, and when the second operating handle 31 performs the return operation, the side insertion slide plate 33 moves in the opposite direction, and at this time, there is no pulling effect of the steel wire 60, allowing the first locking member 41 to slide to the right.

[0057] The foolproof auxiliary member 50 has a first locking portion 51 and a second locking portion 52. Figure 7 As shown, in the first direction X, the first locking portion 51 is used to abut against the second locking member 42 extending from the fixing seat 43 to limit the movement of the foolproof auxiliary member 50 in the first direction X. The mechanical foolproof structure is in the first locking state; in this state, the side is inserted in place, and the second locking member 42 extending can be used to limit the movement of the foolproof auxiliary member 50 and the cam plate 223 to the left. The first transmission mechanism 22 is restricted in the first locking state, thereby locking the positive insertion module 20 in the in-place insertion position. Figure 8 As shown, in the third direction Z, the second locking portion 52 is used to abut against the first end 421 of the second locking member 42 to limit the movement of the second locking portion 52 in the third direction Z, and the mechanical anti-fool structure is in the second locking state; in this state, it is inserted in place, and based on the second end of the second locking member 42, the first locking member 41 can be limited to move right and left, and the second transmission mechanism 32 is restricted from moving in the second locking state, thereby locking the first side insertion module 30 in the disengaged position, that is, keeping it in the return disengaged state.

[0058] In addition, the foolproof auxiliary member 50 in this implementation is a plate-like structure, but is not limited to a plate-like structure. In a specific implementation, the foolproof auxiliary member can be any member as long as it has a first locking portion 51 and a second locking portion 52 that meet the aforementioned adaptation function requirements, for example but not limited to, it can also be integrally formed with the cam plate 223.

[0059] Optionally, in order to improve the manufacturing processability, the fixing seat 43 in this implementation can adopt a split structure. Figure 5 and Figure 6 As shown, the fixed seat 43 includes a first seat body 431 and a second seat body 432 which are fixedly connected; wherein, a slide groove 4311 is opened on the first seat body 431, and the slide groove 4311 is arranged along the first direction X, so that the sliding portion 412 of the first locking member 41 is built into the slide groove 4311 and can slide left and right in the slide groove 4311; a through hole 4321 is opened on the second seat body 432, and the through hole 4321 is arranged along the third direction Z, so that the second locking member 42 is built into the through hole 4321 and can slide up and down in the through hole 4321.

[0060] Please also see Fig. 9 , the figure is Figure 5 As shown in the figure, the cross-sections of the matching slide groove 4311 and the sliding portion 412 are dovetail-shaped to limit the first locking member 41 from escaping from the slide groove 4311 in the third direction Z, and the structure is simple and reliable.

[0061] In other specific implementations, the cross-sections of the slide groove 4311 and the sliding portion 412 may also adopt other shape structures, such as but not limited to rectangular or semicircular, as long as they reasonably take into account good actuation performance and processing costs, and the embodiments of the present application are not limited thereto.

[0062] As shown in the figure, in the third direction Z, the split combination interface S of the first seat body 431 and the second seat body 432 is located in the middle of the first locking member 41, and an avoidance groove 4323 is provided at the bottom of the second seat body 432 to avoid interference with the top structure of the first locking member 41 and meet the sliding stroke requirements of the first locking member 41.

[0063] In a specific implementation, in the third direction Z, the split combination interface S of the first seat body 431 and the second seat body 432 can also be flush with the highest position of the top surface of the first locking member 41, or higher than the highest position of the top surface (not shown in the figure). With this arrangement, there is no need to open the avoidance groove on the second seat body 432.

[0064] Of course, in other specific implementations, the fixing seat 43 may also adopt an integrated structure. In comparison, the above-mentioned implementation method of forming the fixing seat 43 by split processing and then assembling has a simple processing technology, is convenient for assembling internal components, and has good assembly processability.

[0065] Optionally, in order to further improve the responsiveness of the interlocking assembly 40, elastic reset members may be provided correspondingly for the first locking member 41 and the second locking member 42 that slide to switch the working positions.

[0066] Among them, a first elastic reset member 44 can be arranged between the first locking member 41 and the fixed seat 43, and the first elastic reset member is configured as follows: when the mechanical anti-foolproof structure is in the first locking state, the first elastic reset member 44 is deformed, and can release elastic deformation energy after the wire rope 60 is loosened, and act on the first locking member 41, so that the first locking member 41 moves quickly to the right.

[0067] In this implementation, the first elastic reset member 44 is a compression spring embedded in the first seat body 431. Figure 6 , Figure 7 and Figure 8 As shown, a groove 4312 is provided below the slide groove 4311 of the first seat body 431, and the two are connected; wherein a first pressing portion 4313 is fixedly provided in the groove 4312, a second pressing portion 413 is provided at the bottom of the first locking member 41, and the first elastic reset member 44 is built into the groove 4312, and its two ends are respectively against the first pressing portion 4313 and the second pressing portion 413. In this way, when the first locking member 41 moves to the left under the pull of the wire rope 60, the second pressing portion 413 moves to the left synchronously, and the spring is deformed; when the wire rope 60 is released, the spring can push the first locking member 41 to move right quickly, and switch to the second locking state in time.

[0068] As shown in the figure, the first pressing part 4313 and the second pressing part 413 are both pin bodies inserted and fixed on the corresponding side structure. In a specific implementation, the first pressing part 4313 and the second pressing part 413 can adopt other structural forms, for example, but not limited to, the first pressing part can be integrally formed with the first seat body 431, and the second pressing part can be integrally formed with the first locking member 41. The specific structure can be determined according to the actual product design and is not limited in the embodiment of the present application.

[0069] Among them, a second elastic reset member 45 can be arranged between the second locking member 42 and the fixed seat 43, and the second elastic reset member 45 is configured as follows: when the mechanical anti-foolproof structure is in the second locking state, the second elastic reset member 45 is deformed, and can release elastic deformation energy after the first locking member 41 moves to the right, and act on the second locking member 42, so that the second locking member 42 moves downward quickly.

[0070] In this implementation, the second elastic reset member 45 is a compression spring sleeved on the second locking member 42. Figure 6 , Figure 7 and Figure 8As shown, the through hole 4321 of the second seat body 432 is a stepped hole with a small top and a large bottom, and a first stepped surface 4322 is provided in the stepped hole. The second locking member 42 is provided with a second stepped surface 423 extending radially outward, that is, extending toward the hole wall of the through hole 4321, and the two ends of the second elastic reset member 45 are respectively against the first stepped surface 4322 and the second stepped surface 423. In this way, when the first locking member 41 moves to the left, the second locking member 42 can be lifted up under the action of the matching surface 411 of the first locking member 41, and the second stepped surface 423 moves up synchronously, and the spring is deformed; when the first locking member 41 moves to the right, the spring can push the second locking member 42 to move down quickly, so as to switch to the second locking state in time.

[0071] In a specific implementation, the first step surface 4322 and the second step surface 423 can be set as annular step surfaces, or can be set as step surfaces formed along circumferential intervals in the structural implementation of the corresponding side (not shown in the figure), which is not limited here.

[0072] In addition, in this implementation, the first elastic reset member 44 and the second elastic reset member 45 are both compression springs. In other specific implementations, the two elastic reset members can also be rubber elastic members or tension springs. For different forms of elastic reset members, it is necessary to configure an adaptable structure that can produce deformation, as long as the above-mentioned functional requirements are met.

[0073] The adapting surface 411 on the top surface of the first locking member 41 may be an inclined surface as shown in the figure. In other specific implementations, the adapting surface 411 may also be an outer convex arc surface or an inner concave arc surface. This embodiment of the application is not limited.

[0074] In addition, in order to further improve the actuation performance of the corresponding adaptation relationship between the two ends of the second locking member 42, the first end 421 and the second end 422 can be configured as ball structures, respectively embedded in the two ends of the second locking member 42. Here, the ball structure can be implemented using existing technology, so it will not be described in detail herein.

[0075] Based on the ball structure at the first end 421, the friction resistance between it and the second locking part 52 of the anti-foolproof auxiliary part 50 can be effectively reduced, thereby reducing wear; based on the ball structure at the second end, the friction resistance between it and the matching surface 411 on the top surface of the first locking part 41 can also be reduced. On the basis of effectively reducing wear, it can also improve the actuation performance of the corresponding dynamic matching relationship.

[0076] Combine the following Fig.10 Briefly explain the working principle of this implementation scheme. Figure 4 The projection view formed in the E direction is shown in .

[0077] (I) Locking relationship between side insertion operation and carrier lifting

[0078] The second operating handle 31 is in the position shown by the solid line, and the side insertion slide plate 33 is in the right side insertion position; at this time, the side insertion slide plate 33 tightens the wire rope 60, and the first locking member 41 of the interlocking assembly 40 is in the left position (as shown in FIG. Figure 7 As shown), and lift the second locking member 42;

[0079] like Figure 7 As shown, in the jacking state, the first locking member 41 extends out of the through hole 4321 of the second seat body 432, and can prevent the foolproof auxiliary member 50 from driving the cam plate 223 to slide to the left, so that the carrier plate 23 can be reliably locked in the raised state, and the first operating handle 21 cannot be operated to perform the descending action.

[0080] (II) The side insertion unlocks the lock to meet the conditions for the carrier to descend

[0081] The second operating handle 31 is rotated to the position shown by the dotted line, and the side inserting slide plate 33 is in the left disengaged return state. Fig.10 As shown by the dotted line; at this time, the wire rope 60 is loosened, and under the action of the first elastic reset member 44, the first locking member 41 retreats to the right.

[0082] like Figure 8 As shown, since the first locking member 41 retreats to the right, the adapting surface 411 on its top surface releases the lifting effect on the second locking member 42. Under the action of the second elastic reset member 45, the second locking member 42 retracts into the through hole 4321 of the second seat body 432, releasing the obstruction to the anti-foolproof auxiliary member 50, and the anti-foolproof auxiliary member 50 and the cam plate 223 can slide freely to the left.

[0083] On this basis, the first operating handle 21 is operated, the cam plate 223 moves leftward and drives the carrier plate 7 to descend. Fig.10 Shown by the dashed line.

[0084] It can be confirmed that during the entire descent process of the carrier plate 23 and when it is in the final descent state, the second locking member 42 is always below the foolproof auxiliary member 50. At this position, the foolproof auxiliary member 50 can limit the first locking member 41 from sliding to the left, thereby stopping the side latch in the disengaged return state.

[0085] Through the mechanical foolproofing mechanism, the present implementation can lock and limit the positive insertion module 20 and the first side insertion module 30 .

[0086] Please refer to Table 1, which is a relationship table between the first operating handle state and the second handle state.

[0087]

[0088] As shown in Table 1, the logical locking relationship between the first operating handle state and the second handle state is as follows:

[0089] ① When the second operating handle is at the descending height, the first operating handle can only be in the state of the joint being disengaged from the docking;

[0090] ② If the second operating handle is in the docking state, the first operating handle can only be in the rising docking state;

[0091] ③ The necessary and sufficient condition for the first operating handle to be operable is that the second operating handle is in a state where the joint is disengaged from docking;

[0092] ④ The necessary and sufficient condition for the second operating handle to be operable is that the first operating handle is in the raised docking state.

[0093] On the whole, the single-board test fixture provided by this implementation can achieve 100% foolproofing and prevent damage to the product. In particular, for the use of photoelectric sensing and electromagnetic latches to achieve the locking of the state of the first operating handle and the state of the second operating handle, the above two methods need to be powered on to play a locking role. If debugging is performed in an unpowered state or the board is removed after power failure, there is a risk of causing misoperation and damaging the board. In comparison, this implementation uses a purely mechanical structure to provide a foolproofing function, which can completely avoid electrical influences.

[0094] In addition, the present implementation scheme establishes a linkage relationship between the first side plug-in module 30 and the front plug-in module 20 through the steel wire rope 60. Based on the flexibility of the steel wire rope 60, the space can be fully utilized for flexible arrangement, such as Figure 3 As shown, with the assistance of three reversing pulleys 70, the arrangement path of the wire rope 60 from the side insertion slide plate 33 to the interlocking assembly 40 is realized, which has almost no effect on the overall layout of the clamp. It should be understood that the number of reversing pulleys 70 can be determined according to needs, such as but not limited to one or more, and the structural characteristics of the reversing pulley 70 that can change the direction of the rope can meet the space configuration requirements of different application scenarios.

[0095] Optionally, the steel wire rope 60 serving as the flexible pulling member may be replaced by other flexible ropes, which may be implemented by using existing technologies and will not be described in detail here.

[0096] In other specific implementations, the above linkage relationship established based on the flexible pulling member can be applied to horizontal side insertion in different directions. Fig.11 , which is a schematic diagram of the overall structure of another single board test tool provided in the embodiment of the present application. Figure 4 The differences and connections between the described solutions, and the components or structures with the same functions are indicated in the figures with the same symbols.

[0097] like Fig.11 As shown, the single board test fixture 100a provided by this implementation is Figure 4Compared with the described solution, the difference is that it includes a second side plug-in module 30a for realizing the plug-in operation along the second direction Y, and the second operating handle 31a of the second side plug-in module 30a can drive its side plug-in slide plate 33a to move in the second direction Y. Accordingly, based on the arrangement path of the wire rope 60, the arrangement positions of the three reversing pulleys 70 are different.

[0098] That is to say, by setting the orientation of the reversing pulley, the interlocking assembly 40 can be adapted to horizontal side insertion in the left and right directions (X direction), and can also be adapted to horizontal side insertion in the front and back directions (Y direction).

[0099] here, Fig.11 In the single board test fixture 100a shown in FIG, the specific implementation and matching relationship of the interlocking component 40 and the foolproof auxiliary component 50 are the same as the aforementioned implementation, and will not be repeated here.

[0100] In other specific implementations, the single-board test fixture can also provide solutions for single boards with horizontal side insertion, front and rear side insertion, and front insertion, that is, its side insertion module group includes a first side insertion module group for realizing left and right horizontal side insertion, and a second side insertion module group for realizing front and rear horizontal side insertion.

[0101] Specifically, for the first side plug-in module group and the second side plug-in module group (not shown in the figure), a set of mechanical anti-fool mechanism can be configured respectively, and the anti-fool auxiliary parts of the two sets of mechanical anti-fool mechanisms can be jointly arranged on the cam plate; or one is arranged on the cam plate, and the other is arranged on the carrier plate, rack, fan gear or rotating shaft of the positive plug-in module group. In other words, the two anti-fool auxiliary parts can be respectively arranged on the components of two different positive plug-in module groups, and can also simultaneously meet the functions of interlocking of the positive plug-in and the side plug-in in two directions.

[0102] In the above implementation, the foolproof auxiliary member 50 is a plate structure, and a ball structure is configured at the first end 421 of the first locking member 41 to reduce the wear between the second locking portion 52 of the foolproof auxiliary member 50 and the first locking member 41. In other specific implementations, the structure of the foolproof auxiliary member can be further optimized, see Fig.12 , which is a partial view of another mechanical fool-proofing mechanism provided in an embodiment of the present application. Figure 5 The differences and connections between the described solutions, and the components or structures with the same functions are indicated in the figures with the same symbols.

[0103] like Fig.12As shown, the mechanical foolproofing mechanism provided in this embodiment has a foolproofing auxiliary member 50b fixed on the cam plate 223, and the two can move synchronously along the first direction X. The middle part of the plate body of the foolproofing auxiliary member 50b has an avoidance opening 53b, and the second locking portion 52b on the foolproofing auxiliary member 50b is divided into two sections by the avoidance opening 53b, that is, the two sections are respectively located on both sides of the avoidance opening 53b, so as to provide locking limits at the first section and the last section of the lifting stroke of the positive insertion module, respectively, which can reduce the actual length of the friction contact of the second locking member 42b on the foolproofing auxiliary member 50b and reduce the wear between the two.

[0104] On this basis, compared with Figure 5 In the implementation scheme described, the first end of the second locking portion 52b can eliminate the ball structure, which can reasonably control the product manufacturing cost. In addition, based on the common operating practices of single-board testing, the possibility of performing a side insertion operation in the middle of the forward insertion operation stroke is low. Based on the setting of the avoidance opening 53b, the possibility of misoperation will not be increased while reducing wear.

[0105] here, Fig.12 In the mechanical foolproofing mechanism shown in , other functional implementations and coordination relationships of its interlocking components are the same as the aforementioned implementations and will not be repeated here.

[0106] It should be noted that the foolproof auxiliary parts of the mechanical foolproof structure are all fixed on the cam plate of the positive plug-in module 20 and move synchronously. In other specific implementations, the foolproof auxiliary parts can also be fixed on other components of the positive plug-in module that have a transmission relationship, such as but not limited to the carrier plate, rack, sector gear, rotating shaft, etc. of the positive plug-in module, and the arrangement path of the wire rope can also be realized by the configuration orientation of the reversing pulley.

[0107] Of course, in the case where the foolproof auxiliary member 50 is configured on the rack of the gear rack mechanism 222 (not shown in the figure), the rack and the cam plate 223 move in the same manner, and the sliding directions of the first locking member 41 and the second locking member 42 of the interlocking assembly 40 are the same as shown in the figure. In the case where the foolproof auxiliary member 50 is configured on the carrier plate 23 or the gear of the gear rack mechanism 222 (not shown in the figure), the two have different movement modes from the cam plate 223, and the sliding directions of the first locking member 41 and the second locking member 42 need to be determined accordingly.

[0108] At the same time, for one side of the first side plug-in module group 30 and the second side plug-in module group 30a, the wire rope 60 can also be connected to other components with a transmission relationship of the corresponding side plug-in module group, such as but not limited to a transmission cam, etc., so as to establish a reliable interconnection between the side plug-in module group and the positive plug-in module group.

[0109] In addition, in other specific implementations, the steel wire rope and the anti-foolproofing auxiliary parts of the mechanical anti-foolproofing mechanism can also be reversely configured between the plug-in module and the positive plug-in module (not shown in the figure). That is, the anti-foolproofing auxiliary parts are fixed to the side plug-in slide plate or the component of the second transmission mechanism, one end of the steel wire rope is connected to the interlocking component side, and the other end is fixed to the carrier plate or the component of the first transmission mechanism transmission, which can also establish a linkage relationship between the plug-in module and the positive plug-in module.

[0110] The single-board testing tool described in the above embodiments can be widely used in different single-board testing scenarios, such as but not limited to the motherboards of computing devices such as supercomputers, HPC, and intensive computing servers, and the corresponding test connectors can be of different structural forms, such as but not limited to probes, pressure rods, or connectors and other components or structures.

[0111] It should be understood that other functions of the single board testing tool are not the core invention of the present application, and those skilled in the art can implement them based on the existing technology, so they will not be described in detail herein.

[0112] It should be noted that the use of ordinal numbers such as "first" and "second" in the embodiments of the present application is only used to clearly define the differences or connections between the same functional components or structures. It can be understood that the use of the above-mentioned ordinal numbers does not constitute a substantial limitation on the technical solution requested for protection in this application.

[0113] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A single board test fixture, characterized in that: The fixture comprises a fixture base, a front inserting module group, a side inserting module group and a mechanical foolproof mechanism; the front inserting module group and the side inserting module group are arranged on the fixture base, the front inserting module group comprises a first operating handle, a first transmission mechanism and a carrier plate, the first transmission mechanism is transmission-connected between the first operating handle and the carrier plate, and is used to drive the carrier plate to be lifted and switched between the insertion position and the disengagement position; the first side inserting module group comprises a second operating handle, a second transmission mechanism and a side inserting slide plate, the second transmission mechanism is transmission-connected between the second operating handle and the side inserting slide plate, and is used to drive the side inserting slide plate to move in a horizontal plane and switch between the insertion position and the disengagement position; The mechanical foolproofing mechanism comprises an interlocking component, a foolproofing auxiliary component, a flexible pulling component and a reversing pulley; The interlocking assembly and the foolproof auxiliary component can be adapted to switch between a first locking state and a second locking state, wherein the first locking state is used to restrict the positive plug-in module from switching from the mating position to the disengaged position, and the second locking state is used to restrict the side plug-in module from switching from the disengaged position to the mating position; One end of the flexible pulling member is connected to the interlocking component side, and one of the other end of the flexible pulling member and the foolproof auxiliary member is fixed to the side insertion slide plate or the component of the second transmission mechanism, and the other is fixed to the carrier plate or the component of the first transmission mechanism transmission, so as to establish the linkage between the side insertion module group and the positive insertion module group; The reversing pulley is arranged on the arrangement path of the flexible pulling member and is used for positioning and guiding the flexible pulling member.

2. The single board test fixture according to claim 1, characterized in that: The interlocking assembly includes a first locking member, a second locking member and a fixed seat. The first locking member can slide in a first direction relative to the fixed seat and switch between a first locking position and a second locking position. The second locking member is adapted to abut against the first locking member and can slide in a third direction relative to the fixed seat and switch between an extended position and a retracted position, so as to adapt to the anti-foolproofing auxiliary member and switch between the first locking state and the second locking state.

3. The single board test fixture according to claim 2, characterized in that: The first locking member includes a sliding portion and an adapting surface arranged on the sliding portion, the first end of the second locking member can extend out of the fixing seat, and the second end of the second locking member abuts against the adapting surface of the first locking member; Along the first direction, the size of the adapter surface in the third direction away from the sliding part gradually changes, and is configured as follows: when the first locking member is located in the first locking position, the portion of the adapter surface that abuts against the second end is close to the sliding part; when the first locking member is located in the second locking position, the portion of the adapter surface that abuts against the second end is away from the sliding part.

4. The single board test fixture according to claim 3, characterized in that: The matching surface is a plane or a curved surface that is arranged obliquely.

5. The single board test fixture according to claim 3 or 4, characterized in that: The foolproof auxiliary member has a first locking portion and a second locking portion; in a first direction, the first locking portion is used to abut against the second locking member extending from the fixing seat, and the interlocking assembly and the foolproof auxiliary member are adapted to the first locking state; In the third direction, the second locking portion is used to abut against the first end of the second locking member, and the interlocking assembly and the foolproofing auxiliary member are adapted to the second locking state.

6. The single board test fixture according to claim 5, characterized in that: At least one of the first end and the second end of the second locking member is configured as a ball structure.

7. The single board test fixture according to claim 5, characterized in that: The middle part of the foolproof auxiliary component is provided with an avoidance opening, and the second locking portion is composed of two sections respectively located at two sides of the avoidance opening.

8. The single board test fixture according to any one of claims 2 to 7, characterized in that: The interlocking assembly further comprises a first elastic return member and a second elastic return member; The first elastic reset member is disposed between the first locking member and the fixing seat, and the first elastic reset member is configured such that when the interlocking assembly and the foolproof auxiliary member are adapted to the first locking state, the first elastic reset member is deformed; The second elastic return member is disposed between the second locking member and the fixing seat, and the second elastic return member is configured such that when the interlocking assembly and the foolproof auxiliary member are adapted to the second locking state, the second elastic return member is deformed.

9. The single board test fixture according to claim 8, characterized in that: The fixing seat is provided with a slide groove and a through hole, the slide groove is arranged along a first direction, the sliding part of the first locking member is built into the slide groove and can slide in the slide groove; the through hole is arranged along a third direction, the second locking member is built into the through hole and can slide in the through hole.

10. The single board test fixture according to claim 9, characterized in that: The cross-sections of the matched sliding groove and the sliding portion are dovetail-shaped.

11. The single board test fixture according to claim 9 or 10, characterized in that: The fixing seat comprises a first seat body and a second seat body connected to each other, the slide groove is located on the first seat body, and the through hole is located on the second seat body; A groove is provided on the second seat body below the slide slot, the groove is communicated with the slide slot, a first pressing portion is fixedly provided in the groove, and a second pressing portion is provided on the first locking member; The first elastic return member is built in the groove, and two ends thereof are respectively against the first pressing portion and the second pressing portion.

12. The single board test fixture according to any one of claims 9 to 11, characterized in that: The through hole is a stepped hole that is smaller at the top and larger at the bottom, and the stepped hole has a first stepped surface, and the second locking member is provided with a second stepped surface extending toward the hole wall of the through hole; The second elastic return member is built in the through hole, and two ends thereof are respectively against the first step surface and the second step surface.

13. The single board test fixture according to any one of claims 8 to 12, characterized in that: The first elastic return member and the second elastic return member are compression springs respectively.

14. The single board test fixture according to any one of claims 1 to 13, characterized in that: The flexible pulling member is a steel wire rope, the reversing pulley is provided in plurality, and the plurality of reversing pulleys are arranged at intervals on the arrangement path of the flexible pulling member.

15. The single board test fixture according to any one of claims 1 to 14, characterized in that: The side plug-in module group has a first side plug-in module group and a second side plug-in module group; The side insertion plate of the first side insertion module group can be moved in a first direction in a horizontal plane to switch between the insertion position and the disengagement position, and the side insertion plate of the second side insertion module group can be moved in a second direction in a horizontal plane to switch between the insertion position and the disengagement position; The mechanical fool-proofing mechanisms are provided in two, and the two mechanical fool-proofing mechanisms are respectively provided in one-to-one correspondence with the first side plug-in module group and the second side plug-in module group.

16. The single board test fixture according to any one of claims 1 to 14, characterized in that: The side plug-in module group has a first side plug-in module group and a second side plug-in module group; The side insertion plate of the first side insertion module group can be moved in a first direction in a horizontal plane to switch between the insertion position and the disengagement position, and the side insertion plate of the second side insertion module group can be moved in a second direction in a horizontal plane to switch between the insertion position and the disengagement position; The interlocking component and the anti-foolproofing auxiliary component of the mechanical anti-foolproofing mechanism are each provided with one, and the flexible pulling members are provided with two. The two flexible pulling members are respectively provided in one-to-one correspondence with the first side plug-in module group and the second side plug-in module group, and the reversing pulleys are respectively provided on the arrangement paths of the two flexible pulling members.

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