IPM test fixture and IPM test system

Abstract

The utility model belongs to IPM test fixture technical field especially relates to a kind of IPM test fixture and IPM testing system, and wherein IPM test fixture, including: base and tight mechanism, the tight mechanism is set in the top surface of the base, the tight mechanism is configured as bearing IPM module and driving IPM module to rise;Limiting mechanism, the limiting mechanism is set in the top surface of the base, the limiting mechanism is configured as in IPM module rises and contacts limiting mechanism, tight mechanism and limiting mechanism cooperation clamps IPM module after, then realize the IPM module of different specification size can be placed on tight mechanism, then is lifted and clamps with limiting mechanism cooperation, satisfy the IPM module of different specification size can be clamped.

Description

Technical Field

[0001] This utility model belongs to the field of IPM test fixture technology, and particularly relates to an IPM test fixture and an IPM test system. Background Technology

[0002] An IPM (Intelligent Power Module) is an integrated circuit module specifically designed for power electronics applications. It integrates power semiconductor devices (such as power transistors and IGBTs) with drive circuits, protection circuits, and other auxiliary circuits. IPMs play a crucial role in power electronic systems, controlling and regulating power transmission, conversion, and transformation processes. They can be applied in various fields, such as motor drives, inverters, and power supplies. IPMs are characterized by high integration, compact design, high efficiency, and high reliability. Testing IPM modules requires the use of fixtures. However, current IPM module clamping structures are simple and not suitable for modules of different sizes, reducing their applicability.

[0003] Therefore, since IPM modules need to be clamped during testing, and IPM modules come in various sizes, the fixed size of the fixture makes it impossible to adapt to clamping IPM modules of different sizes and specifications. Therefore, it is necessary to design an IPM test fixture and an IPM test system.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0005] This disclosure provides at least one IPM test fixture and one IPM test system.

[0006] In a first aspect, embodiments of this disclosure provide an IPM test fixture, comprising: Base, and A clamping mechanism is disposed on the top surface of the base and is configured to support the IPM module and drive the IPM module to rise. A limiting mechanism is provided on the top surface of the base. The limiting mechanism is configured such that after the IPM module rises and contacts the limiting mechanism, the clamping mechanism cooperates with the limiting mechanism to clamp the IPM module.

[0007] In one alternative embodiment, the clamping mechanism includes: a support frame and a top plate; The top plate is adapted to support the IPM module; The support frame is disposed on the top surface of the base, and the top plate is located within the area surrounded by the support frame; A vertical groove is provided on the inner wall of the support frame, and a stabilizing block corresponding to and adapted to the groove is provided on the side wall of the top plate. The stabilizing block is slidably disposed in the groove. The bottom surface of the top plate is provided with a lifting assembly, which is configured to drive the top plate to rise and fall.

[0008] In one alternative implementation, the lifting assembly includes: a pair of threaded rods with opposite thread directions; The threaded rod is rotatably disposed in the first groove opened on the top surface of the base, and the two threaded rods are in the same straight line; The threaded rod is provided with a second helical gear and is threadedly connected to a movable plate; A swing plate is rotatably connected to the top surface of the movable plate; The bottom surface of the top plate is provided with a connecting plate, and the connecting plate is rotatably connected to both swing plates; A rotating rod is rotatably arranged in the first groove. A first helical gear is provided on the rotating rod. The first helical gear meshes with two second helical gears so that when the rotating rod rotates, it drives the two threaded rods to rotate synchronously, so that the moving plates move closer or further apart. When the moving plates move closer together, the top plate is lifted upward by the swing plate.

[0009] In one alternative embodiment, one end of the rotating rod extends out of the base and is provided with a rotating block; The base has several slots on its side wall near the rotating block, and the slots are arranged around the position where the rotating rod extends out of the base; A locking rod is threaded through the rotating block, and the locking rod is slidably connected to the rotating block; An anti-detachment block is provided on the locking rod between the rotating block and the base, and a spring is sleeved on the locking rod between the anti-detachment block and the rotating block; The lever is configured to prevent the rotating rod from rotating after it is inserted into the slot.

[0010] In one alternative embodiment, a first rubber plate is provided on the top surface of the top plate.

[0011] In one optional embodiment, the limiting mechanism includes: a lead screw passing through the base; The top surface of the base is provided with a pair of second grooves, through which the lead screw passes; The lead screw is rotatably connected to the base; The lead screw is threaded with two L-shaped baffles. The L-shaped baffles are located in the corresponding second groove and extend from the top surface of the second groove. That is, the vertical section of the L-shaped baffle is threaded to the lead screw, the horizontal section extends from the top surface of the second groove, and the horizontal section is located above the bearing frame. The threads of the two L-shaped baffles at the connection points with the lead screw are in opposite directions, so that the two L-shaped baffles move closer to or further away from each other when the lead screw rotates.

[0012] In one optional embodiment, the base is provided with a receiving groove corresponding to the second groove, and a sliding rod is provided in the receiving groove; A slider is slidably mounted on the sliding rod, and a stop plate is mounted on the slider. The stop plate is connected to the L-shaped baffle.

[0013] In one alternative embodiment, a handwheel is provided on one end of the lead screw that extends out of the base.

[0014] In one optional embodiment, a second rubber plate is provided on the bottom surface of the horizontal section of the L-shaped baffle.

[0015] Secondly, embodiments of this disclosure also provide an IPM testing system, comprising: The IPM module is clamped using the aforementioned IPM test fixture.

[0016] The beneficial effects of this utility model are as follows: This IPM test fixture includes: a base and a clamping mechanism, wherein the clamping mechanism is disposed on the top surface of the base and is configured to support the IPM module and drive the IPM module to rise; and a limiting mechanism, wherein the limiting mechanism is disposed on the top surface of the base and is configured such that after the IPM module rises and contacts the limiting mechanism, the clamping mechanism and the limiting mechanism cooperate to clamp the IPM module, thereby enabling IPM modules of different specifications and sizes to be placed on the clamping mechanism, and then clamped after being lifted up, thus satisfying the requirement that IPM modules of different specifications and sizes can be clamped.

[0017] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of an IPM test fixture provided in an embodiment of the present disclosure; Figure 2 This is a schematic diagram of a clamping mechanism provided in an embodiment of the present disclosure; Figure 3 Provided for the embodiments of this disclosure Figure 2 Enlarged diagram of part A in the middle; Figure 4 This is a schematic diagram of the structure of a carrier frame provided in an embodiment of the present disclosure.

[0021] In the picture: 1. Base, 11. First groove, 12. Slot, 13. Second groove, 14. Receiving groove, 15. Assembly plate, 16. Assembly screw; 2. Tightening mechanism, 21. Bearing frame, 211. Slide groove, 22. Top plate, 221. Stabilizing block, 222. Connecting plate, 223. First rubber plate, 23. Lifting assembly, 231. Threaded rod, 232. Second helical gear, 233. Moving plate, 234. Swinging plate, 235. Rotating rod, 236. First helical gear, 24. Rotating block, 241. Locking rod, 242. Anti-detachment block, 243. Spring; 3 Limiting mechanism, 31 Lead screw, 32 L-shaped baffle, 33 Sliding rod, 34 Sliding block, 35 Stop plate, 36 Handwheel, 37 Second rubber plate; 4IPM module. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0024] Fixtures are required during the testing of IPM modules, but the existing IPM module clamping structures are simple and not suitable for modules of different sizes, thus reducing their applicability.

[0025] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0028] like Figure 1 As shown, at least one disclosed embodiment provides an IPM test fixture, including: a base 1 and a clamping mechanism 2, the clamping mechanism 2 being disposed on the top surface of the base 1, the clamping mechanism 2 being configured to support an IPM module 4 and drive the IPM module 4 to rise; and a limiting mechanism 3, the limiting mechanism 3 being disposed on the top surface of the base 1, the limiting mechanism 3 being configured such that after the IPM module 4 rises and contacts the limiting mechanism 3, the clamping mechanism 2 and the limiting mechanism 3 cooperate to clamp the IPM module 4, thereby enabling IPM modules 4 of different specifications and sizes to be placed on the clamping mechanism 2, and then clamped with the limiting mechanism 3 after being lifted, ensuring that IPM modules 4 of different specifications and sizes can be clamped to ensure clamping effect and meet the usage requirements of different scenarios.

[0029] like Figure 4 As shown, in an optional embodiment, the clamping mechanism 2 includes: a support frame 21 and a top plate 22; the top plate 22 is adapted to support the IPM module 4; the support frame 21 is disposed on the top surface of the base 1, and the top plate 22 is located in the area surrounded by the support frame 21; a sliding groove 211 is vertically disposed on the inner wall of the support frame 21, and a stabilizing block 221 corresponding to and adapted to the sliding groove 211 is disposed on the side wall of the top plate 22, the stabilizing block 221 being slidably disposed in the sliding groove 211; a lifting assembly 23 is disposed on the bottom surface of the top plate 22, the lifting assembly 23 being configured to drive the top plate 22 to rise and fall.

[0030] In this embodiment, when the IPM module 4 is placed on the top plate 22, the top plate 22 can be lifted by the lifting component 23, so that the IPM module 4 approaches and contacts the limiting mechanism 3. The IPM module 4 is clamped by the limiting mechanism 3 and the lifting component 23. Since both the limiting mechanism 3 and the lifting component 23 can be operated and moved, and their positions are not fixed, IPM modules 4 of different specifications and sizes can be clamped.

[0031] In this embodiment, the top plate 22 is kept stable during the lifting and lowering process by the cooperation of the stabilizing block 221 and the slide 211, so as to avoid the top plate 22 shaking.

[0032] like Figure 2 As shown, in an optional embodiment, the lifting assembly 23 includes: a pair of threaded rods 231 with opposite thread directions; the threaded rods 231 are rotatably disposed in a first groove 11 opened on the top surface of the base 1, and the two threaded rods 231 are in the same straight line; a second helical gear 232 is disposed on the threaded rod 231, and a moving plate 233 is threadedly connected to it; a swing plate 234 is rotatably connected to the top surface of the moving plate 233; a connecting plate 222 is disposed on the bottom surface of the top plate 22, and the connecting plate 222 is rotatably connected to both swing plates 234; a rotating rod 235 is rotatably disposed in the first groove 11, and a first helical gear 236 is disposed on the rotating rod 235, the first helical gear 236 meshing with both second helical gears 232, so that when the rotating rod 235 rotates, it drives the two threaded rods 231 to rotate synchronously, so that the moving plates 233 move closer or further apart, and when the moving plates 233 move closer together, the top plate 22 is lifted upward by the swing plate 234.

[0033] In this embodiment, the operator can manually rotate the rotating rod 235. Through the meshing of the first helical gear 236 and the two second helical gears 232, the transmission is carried out, so that the two threaded rods 231 rotate synchronously, causing the moving plates 233 on the threaded rods 231 to move closer or further away from each other. When the moving plates 233 move closer, the connecting plate 222 is lifted by the swing plate 234, thereby lifting the top plate 22. When the moving plates 233 move away, the connecting plate 222 is lowered by the swing plate 234, causing the top plate 22 to lower. When it is necessary to clamp the IPM module 4, the moving plates 233 can be moved away first to lower the top plate 22, the IPM module 4 can be placed on the top plate 22, and then the top plate 22 can be lifted.

[0034] In this embodiment, the first groove 11 can avoid affecting the movement of the moving plate 233.

[0035] like Figure 3As shown, in one optional embodiment, one end of the rotating rod 235 extends out of the base 1 and is provided with a rotating block 24; a plurality of slots 12 are provided on the side wall of the base 1 near the rotating block 24, and the slots 12 are arranged around the position where the rotating rod 235 extends out of the base 1; a locking rod 241 is passed through the rotating block 24, and the locking rod 241 is slidably connected to the rotating block 24; an anti-detachment block 242 is provided on the locking rod 241 between the rotating block 24 and the base 1, and a spring 243 is sleeved on the locking rod 241 between the anti-detachment block 242 and the rotating block 24; the locking rod 241 is configured to prevent the rotating rod 235 from rotating after being inserted into the slot 12.

[0036] In this embodiment, the operator can manually drive the rotating rod 235 to rotate using the rotating block 24.

[0037] In this embodiment, after the rotating rod 235 has rotated to the position, that is, after the top plate 22 has been raised or lowered to the position, the locking rod 241 can be inserted into the corresponding slot 12 to fix the rotating block 24 and prevent the rotating rod 235 from continuing to rotate. The rebound force of the spring 243 can make the locking rod 241 securely locked in the slot 12.

[0038] In this embodiment, in the initial state, the locking rod 241 is inserted into the corresponding slot 12. At this time, the spring 243 is in a compressed state, maintaining the stability of the locking rod 241 inserted into the slot 12. When it is necessary to rotate the rotating block 24, the locking rod 241 can be manually pulled out of the slot 12. At this time, the anti-disengagement block 242 can prevent the locking rod 241 from being pulled out of the rotating block 24.

[0039] In one alternative embodiment, a first rubber plate 223 is provided on the top surface of the top plate 22.

[0040] In this embodiment, the first rubber plate 223 can increase the buffering force when the IPM module 4 is clamped to prevent the IPM module 4 from being damaged.

[0041] like Figure 1 and Figure 2 As shown, in an optional embodiment, the limiting mechanism 3 includes: a lead rod 31 passing through the base 1; a pair of second grooves 13 are provided on the top surface of the base 1, through which the lead rod 31 passes; the lead rod 31 is rotatably connected to the base 1; two L-shaped baffles 32 are threadedly connected to the lead rod 31, the L-shaped baffles 32 are located in the corresponding second grooves 13 and extend from the top surface of the second grooves 13, that is, the vertical section of the L-shaped baffle 32 is threadedly connected to the lead rod 31, the horizontal section extends from the top surface of the second grooves 13, and the horizontal section is located above the bearing frame 21; the threads of the two L-shaped baffles 32 and the lead rod 31 are opposite in direction, so that when the lead rod 31 rotates, the two L-shaped baffles 32 move closer to or further away from each other.

[0042] In this embodiment, the length direction of the lead screw 31 is parallel to the length direction of the threaded rod 231.

[0043] In this embodiment, the horizontal section of the L-shaped baffle 32 is located above the support frame 21, which facilitates the horizontal section to move above the area enclosed by the support frame 21, so that the top plate 22 can contact the horizontal section after lifting the IPM module 4, so as to clamp the IPM module 4.

[0044] In this embodiment, when it is necessary to clamp the IPM module 4, the two L-shaped baffles 32 can be brought closer to each other by rotating the lead screw 31, and the corresponding horizontal section can be moved above the area enclosed by the support frame 21. Then, the top plate 22 can be lifted by rotating the rotating rod 235, so that the top surface of the IPM module 4 contacts the horizontal bar and the bottom surface is supported by the top plate 22, thus completing the clamping.

[0045] In this embodiment, when it is necessary to release the IPM module 4, the rotating rod 235 can be rotated to lower the top plate 22, and then the lead screw 31 can be rotated to move the two L-shaped baffles 32 away from each other, making it easier to remove the IPM module 4.

[0046] like Figure 1 As shown, in one optional embodiment, the base 1 has a receiving groove 14 corresponding to the second groove 13, and a sliding rod 33 is provided in the receiving groove 14; a slider 34 is slidably provided on the sliding rod 33, and a stop plate 35 is provided on the slider 34, and the stop plate 35 is connected to the L-shaped baffle 32.

[0047] In this embodiment, the L-shaped baffle 32 can move smoothly through the cooperation of the slider 34 and the sliding rod 33.

[0048] In one alternative embodiment, a handwheel 36 is provided on one end of the lead screw 31 that extends out of the base 1.

[0049] In this embodiment, the handwheel 36 allows the operator to easily rotate the lead screw 31.

[0050] In one optional embodiment, a second rubber plate 37 is provided on the bottom surface of the horizontal section of the L-shaped baffle 32.

[0051] In this embodiment, the second rubber plate 37 can increase the buffering force when the IPM module 4 is clamped to prevent damage to the IPM module 4.

[0052] In this embodiment, the base 1 can be fixed on the test workbench, and the IPM module 4 is placed on the top plate 22 inside the support frame 21. By rotating the handwheel 36, the lead screw 31 is rotated in the second groove 13. When the lead screw 31 rotates, the horizontal section of the L-shaped baffle 32 moves to the top of the IPM module 4. At the same time, the slider 34 connected to the stop plate 35 slides on the slide rod 33 to achieve the stability of the movement of the L-shaped baffle 32. In this embodiment, rotating the rotating block 24 causes the rotating rod 235 to rotate. At this time, the first helical gear 236 installed on the rotating rod 235 will mesh with the second helical gears 232 on both sides to realize the rotation of the threaded rod 231. At the same time, the two moving plates 233 threaded onto the threaded rod 231 will move relative to each other, causing the swing plate 234 to push the connecting plate 222. At this time, the connecting plate 222 will push the top plate 22 to lift the IPM module 4, thereby clamping the IPM module 4 between the top plate 22 and the L-shaped baffle 32. In this embodiment, mounting plates 15 are fixedly connected to both sides of the base 1. Mounting holes are provided at both ends of the mounting plates 15, and mounting screws 16 are inserted into the mounting holes to facilitate the fixing of the base 1.

[0053] At least one other disclosed embodiment also provides an IPM testing system, comprising: clamping an IPM module 4 using the aforementioned IPM test fixture, and after clamping the IPM module 4, testing the IPM module 4 using other testing instruments, etc.

[0054] In summary, this IPM test fixture includes: a base 1, a clamping mechanism 2, the clamping mechanism 2 being disposed on the top surface of the base 1, the clamping mechanism 2 being configured to support the IPM module 4 and drive the IPM module 4 to rise; and a limiting mechanism 3, the limiting mechanism 3 being disposed on the top surface of the base 1, the limiting mechanism 3 being configured such that after the IPM module 4 rises and contacts the limiting mechanism 3, the clamping mechanism 2 and the limiting mechanism 3 cooperate to clamp the IPM module 4, thereby enabling IPM modules 4 of different specifications and sizes to be placed on the clamping mechanism 2, and then clamped together with the limiting mechanism 3 after being lifted, thus satisfying the requirement that IPM modules 4 of different specifications and sizes can be clamped.

[0055] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0056] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0057] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0058] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.

[0059] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An IPM test fixture, characterized in that, include: Base (1), and A clamping mechanism (2) is provided on the top surface of the base (1). The clamping mechanism (2) is configured to carry the IPM module (4) and drive the IPM module (4) to rise. The limiting mechanism (3) is located on the top surface of the base (1). The limiting mechanism (3) is configured such that after the IPM module (4) rises and contacts the limiting mechanism (3), the clamping mechanism (2) cooperates with the limiting mechanism (3) to clamp the IPM module (4).

2. The IPM test fixture as described in claim 1, characterized in that, The clamping mechanism (2) includes: a support frame (21) and a top plate (22); The top plate (22) is adapted to carry the IPM module (4); The support frame (21) is disposed on the top surface of the base (1), and the top plate (22) is located in the area surrounded by the support frame (21); The inner wall of the support frame (21) is vertically provided with a sliding groove (211), and the side wall of the top plate (22) is provided with a stabilizing block (221) that corresponds to and is adapted to the sliding groove (211). The stabilizing block (221) is slidably disposed in the sliding groove (211). The bottom surface of the top plate (22) is provided with a lifting component (23), which is configured to drive the top plate (22) to rise and fall.

3. The IPM test fixture as described in claim 2, characterized in that, The lifting assembly (23) includes: a pair of threaded rods (231) with opposite thread directions; The threaded rod (231) is rotatably disposed in the first groove (11) opened on the top surface of the base (1), and the two threaded rods (231) are in the same straight line; The threaded rod (231) is provided with a second helical gear (232) and is threadedly connected to a movable plate (233). The top surface of the movable plate (233) is rotatably connected to a swing plate (234). The bottom surface of the top plate (22) is provided with a connecting plate (222), and the connecting plate (222) is rotatably connected to both swing plates (234); A rotating rod (235) is rotatably disposed in the first groove (11). A first helical gear (236) is disposed on the rotating rod (235). The first helical gear (236) meshes with two second helical gears (232) so that when the rotating rod (235) rotates, it drives two threaded rods (231) to rotate synchronously, so that the moving plates (233) move closer or further away from each other. When the moving plates (233) move closer to each other, the top plate (22) is lifted upward by the swing plate (234).

4. The IPM test fixture as described in claim 3, characterized in that, One end of the rotating rod (235) extends out of the base (1) and is provided with a rotating block (24). The base (1) has several slots (12) on its side wall near the rotating block (24), and the slots (12) are arranged around the position where the rotating rod (235) extends out of the base (1); A locking rod (241) is provided on the rotating block (24), and the locking rod (241) is slidably connected to the rotating block (24); An anti-detachment block (242) is provided on the locking rod (241) between the rotating block (24) and the base (1), and a spring (243) is sleeved on the locking rod (241) between the anti-detachment block (242) and the rotating block (24). The lever (241) is configured to prevent the rotating rod (235) from rotating after being inserted into the slot (12).

5. The IPM test fixture as described in claim 2, characterized in that, The top surface of the top plate (22) is provided with a first rubber plate (223).

6. The IPM test fixture as described in claim 2, characterized in that, The limiting mechanism (3) includes: a lead screw (31) passing through the base (1); The top surface of the base (1) is provided with a pair of second grooves (13), and the lead screw (31) passes through the second grooves (13). The lead screw (31) is rotatably connected to the base (1); The lead screw (31) is threaded with two L-shaped baffles (32). The L-shaped baffles (32) are located in the corresponding second groove (13) and extend from the top surface of the second groove (13). That is, the vertical section of the L-shaped baffle (32) is threaded to the lead screw (31), and the horizontal section extends from the top surface of the second groove (13) and is located above the bearing frame (21). The threads of the two L-shaped baffles (32) and the lead screw (31) are opposite in direction, so that when the lead screw (31) rotates, the two L-shaped baffles (32) move closer to or further away from each other.

7. The IPM test fixture as described in claim 6, characterized in that, The base (1) is provided with a receiving groove (14) corresponding to the second groove (13), and a sliding rod (33) is provided in the receiving groove (14). A slider (34) is slidably mounted on the slider (33), and a stop plate (35) is mounted on the slider (34). The stop plate (35) is connected to the L-shaped baffle (32).

8. The IPM test fixture as described in claim 6, characterized in that, A handwheel (36) is provided on one end of the lead screw (31) that extends out of the base (1).

9. The IPM test fixture as described in claim 6, characterized in that, The bottom surface of the horizontal section of the L-shaped baffle (32) is provided with a second rubber plate (37).

10. An IPM testing system, characterized in that, include: The IPM module (4) is clamped using the IPM test fixture as described in any one of claims 1-9.

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