Supporting assembly and pressure measuring device
By designing the concave and convex surface structure of the support limit plate and the support base plate, the problem of deformation and damage of the test plate during the pressure test is solved, and effective support and efficient detection of large-area test plates are achieved.
Patent Information
- Application Number
- CN202422467736.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-10-11
AI Technical Summary
In the prior art, during the pressure testing process of chips packaged in a ball matrix, the test board is easily deformed and damaged due to the lack of bottom support, resulting in low detection efficiency and poor compatibility, especially for large-area test boards.
A support assembly is designed, including a support limiting plate and a support base plate. The support base plate is provided with a concave and convex surface and a support member for supporting the back of a test plate, and the position of the test plate is fixed by a limiting structure to avoid deformation.
It effectively supports the test board, prevents deformation and damage, improves detection efficiency, is suitable for large-area test boards, and enhances detection compatibility.
Smart Images
Figure CN223362223U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of semiconductor packaging and testing, in particular to a supporting component and a pressure testing device. Background Art
[0002] In the existing technology, the inspection of semiconductor components by the sorting machine is mostly carried out by gravity or translational material removal, the chip is transported to the area to be inspected, and the chip is electrically connected to the test socket and the test machine by clamping the chip pins or pressing the chip downward, thereby realizing the testing of the chip.
[0003] The clamp-on test method is typically used for pin-inserted chips. This approach protects the chip's pins while ensuring good electrical connectivity. However, in recent years, semiconductor packaging has undergone significant reforms. To meet market demand for higher pin counts, ball-matrix packaging emerged, significantly improving the performance and functional parameters of semiconductor components. To reduce chip size, shorten latency, and increase heat dissipation efficiency, derivatives such as CSP (Chip Size Package) and MCM (Multi-Chip Module) have emerged. However, for chips packaged in these ball-matrix packages, pressure testing is clearly more suitable. Current pressure testing methods typically involve directly latching a test board and a supporting substrate onto a test socket for pressure testing. However, this method places a certain amount of pressure on the test board. Since the test board lacks support underneath, it is only suitable for smaller test boards. Large test boards with numerous components and a high weight can easily deform and damage the board without support, making effective pressure testing difficult, impacting testing efficiency, and resulting in poor compatibility. Utility Model Content
[0004] The purpose of the present utility model is to provide a support assembly and a pressure testing device, which can ensure that the test plate is not easily deformed and damaged during the pressure testing process, is suitable for test plates of larger sizes, is easy to perform effective pressure testing, and reduces the impact on detection efficiency caused by the lack of support at the bottom of the test plate.
[0005] To achieve the above objectives, the present invention provides the following technical solutions:
[0006] In a first aspect, the utility model provides a support assembly, comprising a support limit plate and a support base plate, wherein the support limit plate has a top surface for facing the back of a test plate, the support base plate is connected to the support limit plate and the support base plate protrudes from the top surface, and the portion of the support base plate protruding from the top surface has a concave-convex surface, the concave portion of the concave-convex surface is used to avoid the device on the back of the pressure test area of the test plate, and the convex portion of the concave-convex surface is used to support the back of the test plate;
[0007] A supporting structure is protruded from the top surface. The supporting structure includes a plurality of supporting members for supporting the back surface of the test board. The plurality of supporting members are spaced apart from a portion of the support substrate protruding from the top surface.
[0008] Furthermore, the top surface is convexly provided with a limiting structure for limiting the position of the test board relative to the top surface.
[0009] Furthermore, the support structure includes a plurality of support members for supporting the back side of the test board, and the plurality of support members are at least partially distributed on the edge of the top surface.
[0010] Furthermore, the limiting structure includes multiple limiting members, the top surface has a length direction and a width direction that are perpendicular to each other, and the angles between the line projected by at least two of the limiting members on the top surface and the length direction and the width direction are not 0 degrees.
[0011] Furthermore, among the plurality of the limiting members, the distance between the two limiting members that are farthest apart is the first distance;
[0012] Among the plurality of support members, the distance between two support members that are farthest apart is a second distance, and the second distance is less than or equal to the first distance.
[0013] Furthermore, the limiting part includes a connecting part, a supporting part and a limiting part, the connecting part is connected to the supporting limiting plate, the supporting part is connected between the connecting part and the limiting part, the end face of the supporting part facing away from the connecting part is flush with the end face of the supporting part for supporting the back side of the test plate, and the end of the limiting part facing away from the supporting part is conical.
[0014] Furthermore, at least the concave-convex surface of the support substrate is provided with an antistatic layer.
[0015] In a second aspect, the present invention further provides a pressure testing device, comprising a test plate, a test seat, a pressure head assembly, and the support assembly described in the above solution;
[0016] The test seat has a test slot for carrying the object to be tested;
[0017] The indenter assembly is disposed opposite to the test slot and is configured to perform linear reciprocating motion in a direction perpendicular to the bottom of the test slot. When the indenter assembly is inserted into the test slot, it is used to apply a load to the object to be tested.
[0018] The front of the test board has a pressure testing area at a position corresponding to the test seat. The test board is used for communication connection with the object to be tested. The back of the test board is supported by the support assembly.
[0019] Furthermore, a pressure-bearing substrate is connected to a side of the test seat facing the pressure head assembly, and the pressure-bearing substrate is provided with a through hole for the pressure head body and the limiting claw assembly to pass through;
[0020] A gasket for being clamped between the pressure-bearing substrate and the pressure-head assembly is provided on the side of the pressure-bearing substrate facing the pressure-head assembly, and the gasket is detachably connected to the pressure-bearing substrate, and / or a plurality of positioning pins are provided on the side of the pressure-bearing substrate facing the pressure-head assembly, and the pressure-head assembly has a plurality of positioning holes arranged in one-to-one correspondence with the plurality of positioning pins, and the plurality of positioning holes include at least one circular hole and at least one waist-shaped hole.
[0021] Furthermore, it also includes a frame crossbeam, on which a fixed mounting seat is installed, and the fixed mounting seat supports the support base plate.
[0022] The support assembly and pressure measuring device provided by the utility model can produce the following beneficial effects:
[0023] When the above-mentioned support assembly is in use, the test board can be placed on the support assembly. The protrusions on the concave and convex surface of the support substrate and the multiple support members on the top surface of the support limit plate can support the back of the test board. At the same time, the recessed parts of the concave and convex surface can avoid the devices on the back of the pressure test area, ensuring that the test board is effectively supported in multiple places during the pressure test. The test board is not prone to deformation and damage. It is suitable for test boards with larger sizes, easy to perform effective pressure measurement, and reduces the impact of the lack of support on the bottom of the test board on the detection efficiency.
[0024] Compared with the prior art, the pressure testing device provided in the second aspect of the present invention includes a test plate, a test seat, a pressure head assembly and the above-mentioned support assembly, thereby having all the beneficial effects of the support assembly provided in the first aspect of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0026] Figure 1 A schematic diagram of the three-dimensional structure of a support assembly provided by the utility model;
[0027] Figure 2 A schematic diagram of the three-dimensional structure of a support substrate provided by the utility model;
[0028] Figure 3 A schematic diagram of the three-dimensional structure of a position limiting member provided by the utility model;
[0029] Figure 4 A three-dimensional structural diagram of a test socket provided by the utility model;
[0030] Figure 5 A schematic diagram of the three-dimensional structure of a test seat and a substrate body provided by the utility model when they are matched;
[0031] Figure 6 A schematic diagram of the three-dimensional structure of a pressure head assembly provided by the utility model;
[0032] Figure 7 This is a schematic diagram of the three-dimensional structure of a pressure head assembly, a test seat and a pressure-bearing substrate provided by the utility model when they are matched;
[0033] Figure 8 A top view of a pressure measuring device provided by the present invention;
[0034] Figure 9 for Figure 8 A-A cross-sectional view;
[0035] Figure 10 A schematic diagram of the three-dimensional structure of a pressure-bearing substrate provided by the utility model;
[0036] Figure 11 A schematic diagram of the three-dimensional structure of a pressure head assembly and a pressure-bearing substrate provided by the present invention when they are in cooperation;
[0037] Figure 12 This is a front view of a support assembly provided by the utility model when installed on a fixed mounting seat.
[0038] Icons: 1-support limit plate; 11-top surface; 12-support structure; 121-support member; 13-limiting structure; 131-limiting member; 1311-connecting part; 1312-support part; 1313-limiting part; 2-support base plate; 21-concave and convex surface; 211-protrusion; 3-test seat; 31-test slot; 4-pressurizer assembly; 41-pressurizer body; 42-round hole; 43-waist-shaped hole; 44-lower surface; 5-pressure-bearing base plate; 51-through hole; 52-gasket; 53-locating pin; 54-mounting hole; 6-rack beam; 7-fixed mounting seat; 8-base plate body. DETAILED DESCRIPTION
[0039] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.
[0040] 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 positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0041] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.
[0042] The following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.
[0043] The embodiment of the first aspect of the present invention is to provide a support assembly, such as Figure 1 and Figure 2 As shown, it includes a supporting limit plate 1 and a supporting substrate 2, the supporting limit plate 1 has a top surface 11 for facing the back of the test plate, the supporting substrate 2 is connected to the supporting limit plate 1 and the supporting substrate 2 protrudes from the top surface 11, and the part of the supporting substrate 2 protruding from the top surface 11 has a concave-convex surface 21, the concave part of the concave-convex surface 21 is used to avoid the device on the back of the pressure test area of the test plate, and the protrusion 211 of the concave-convex surface 21 is used to support the back of the test board; the top surface 11 is convexly provided with a supporting structure 12, the supporting structure 12 includes a plurality of supporting members 121 for supporting the back of the test plate, and the plurality of supporting members 121 are spaced apart from the part of the supporting substrate 2 protruding from the top surface 11.
[0044] The above embodiment provides a support assembly that can support the test board. When the above support assembly is in use, the bottom surface of the test board can be placed on the support assembly. During the pressure test, the protrusions 211 of the concave and convex surface 21 on the supporting substrate 2 and the multiple support members 121 on the top surface 11 of the supporting limit plate 1 can support the back of the pressure test area of the test board. At the same time, the recessed part of the concave and convex surface 21 can avoid the devices on the back of the pressure test area, ensuring that the test board is effectively supported in multiple places during the pressure test. The test board is not prone to deformation and damage. It is suitable for test boards with larger sizes, easy to perform effective pressure measurement, and reduces the impact of the lack of support on the bottom of the test board on the detection efficiency.
[0045] Specifically, if Figure 2 As shown, the concave-convex surface 21 is provided with outward protrusions 211, and recesses are formed between the outward protrusions 211 for avoiding the devices on the back of the pressure test area. The top surface of the protrusions 211 can be offset against the back of the pressure test area of the test board to fully support the main pressure-bearing parts of the test board and protect the devices on the back of the pressure test area.
[0046] It should be noted that the number of protrusions 211 is not limited and can be one, two, three, four, or even more. The shape of protrusions 211 is also not limited and can be L-shaped, T-shaped, or other irregular shapes. The number and shape of protrusions 211 are related to the number and shape of devices on the back side of the pressure testing area and can be appropriately adjusted in actual applications.
[0047] The setting of the support structure 12 enables the support limit plate 1 to support other areas of the test plate except the back of the pressure test area, increases the support area of the test plate provided by the support component, and has a better supporting effect in combination with the concave and convex surface 21.
[0048] In an optional embodiment, if Figure 1 As shown, at least a portion of the plurality of support members 121 are distributed on the edge of the top surface 11 to increase the supporting area for the test board as much as possible.
[0049] In an optional embodiment, the outer dimensions of the support and limit plate 1 are consistent with those of the test board. The above arrangement enables the support members 121 distributed on the edge of the top surface 11 to also support the edge of the test board, thereby more comprehensively supporting the test board.
[0050] by Figure 1 For example, ten support members 121 are configured, eight of which are configured at the edges of the top surface 11 , and the other two are configured in an area near the middle of the top surface 11 .
[0051] Specifically, the support member 121 can be columnar, and the height of the support member 121 is adjusted according to the installation hole position on the test board and the height of the device behind the test board. The top end face of the support member 121 is recessed with a threaded hole for inserting the connecting member. The top end face of the support member 121 is used to support the test board. The connecting member can pass through the test board and be inserted into the threaded hole to lock the test board.
[0052] In an optional embodiment, if Figure 1 As shown, a limiting structure 13 is protruded from the top surface 11 of the support and limiting plate 1. The limiting structure 13 can limit the position of the test board relative to the top surface 11 to ensure that the test board is stably supported on the support assembly.
[0053] In an optional embodiment, if Figure 1 As shown, the limiting structure 13 includes multiple limiting members 131, and the top surface 11 of the supporting limiting plate 1 has a length direction and a width direction that are perpendicular to each other. The angles between the line projected by at least two limiting members 131 on the top surface 11 and the length direction and the width direction are not 0 degrees.
[0054] In the above embodiment, the limiting structure 13 includes a plurality of limiting members 131, and the angle between the line projected by at least two limiting members 131 on the top surface 11 and the length direction is not 0 degrees, and the angle between the line projected by at least two limiting members 131 and the width direction is also not 0 degrees. In this way, the above-mentioned limiting members 131 can not only limit the position of the test plate relative to the top surface 11 in the length direction, but also limit the position of the test plate relative to the top surface 11 in the width direction, thereby avoiding the test plate from shifting relative to the top surface 11 during the pressure test.
[0055] The limiting members 131 can be configured as two, three, four or even more. Figure 1 For example, two limiting members 131 are configured, wherein one limiting member 131 is disposed at the upper right corner of the top surface 11 , and the other limiting member 131 is disposed at the left edge of the top surface 11 .
[0056] In an optional embodiment, among multiple limit members 131, the distance between the two limit members 131 farthest apart is the first distance b1; among multiple support members 121, the distance between the two support members 121 farthest apart is the second distance b2, and the second distance b2 is less than or equal to the first distance b1.
[0057] Such an arrangement ensures that the distance between the two limit members 131 that are farthest apart is greater than the distance between the two support members 121 that are farthest apart, and the distance between the two limit members 131 is lengthened as much as possible, thereby reducing the position error of the test plate caused by the position processing error of the limit member 131, and making the position of the test plate defined by the limit member 131 more accurate.
[0058] In an optional embodiment, if Figure 3 As shown, the limiting member 131 includes a connecting portion 1311, a supporting portion 1312 and a limiting portion 1313. The connecting portion 1311 is connected to the support and limiting plate 1, and the supporting portion 1312 is connected between the connecting portion 1311 and the limiting portion 1313. The end face of the supporting portion 1312 facing away from the connecting portion 1311 is flush with the end face of the support member 121 for supporting the back side of the test board, and the end of the limiting portion 1313 facing away from the supporting portion 1312 is conical.
[0059] When the test board is lowered onto the support assembly, the end of the limiting portion 1313 facing away from the supporting portion 1312 contacts the test board first, and is passed through the test board to limit the test board. As the test board descends, the back of the test board synchronously contacts the end face of the supporting portion 1312 facing away from the connecting portion 1311, the end face of the supporting member 121 used to support the test board, and the end face of the concave-convex surface 21 used to support the test board. At this time, the supporting portion 1312, the supporting member 121 and the concave-convex surface 21 jointly support the test board.
[0060] The position-limiting member 131 in the above embodiment not only has a positioning function for the test board, but also has a supporting function for the test board, thereby further increasing the area of the support assembly supporting the test board.
[0061] In addition, the tapered end of the limiting portion 1313 can guide the test board, eliminating the need for the test board to have high docking accuracy, thereby facilitating the installation of the test board.
[0062] In a preferred embodiment, the connecting portion 1311 , the supporting portion 1312 and the limiting portion 1313 adopt an integrated structure to ensure the strength and precision of the limiting portion 1313 .
[0063] To facilitate the connection between the connecting part 1311 and the support and limiting plate 1, the connecting part 1311 is provided with an external thread, and the support and limiting plate 1 is provided with a connecting hole. The connecting hole has an internal thread that matches the external thread. The connecting part 1311 only needs to be screwed into the connecting hole.
[0064] Specifically, one end of the support portion 1312 close to the connecting portion 1311 may have a limiting surface. When the connecting portion 1311 is screwed into the connecting hole, the limiting surface abuts against the top surface 11 of the support limiting plate 1, thereby limiting the screwing depth of the support portion 1312.
[0065] In an optional embodiment, since the concave-convex surface 21 of the support substrate 2 is in direct contact with the back surface of the pressure testing area, the concave-convex surface 21 on the support substrate 2 is provided with an antistatic layer.
[0066] Of course, the entire surface of the supporting substrate 2 may be provided with an antistatic layer.
[0067] In an optional embodiment, the portion of the support base plate 2 located below the bottom surface of the support and limiting plate 1 may be connected to the support and limiting plate 1 by a connecting structure such as bolts.
[0068] The second embodiment of the present invention provides a pressure measuring device, such as Figures 4 to 9 As shown, the pressure testing device provided by the embodiment of the second aspect of the present invention includes a test plate, a test seat 3, a pressure head assembly 4 and the above-mentioned support assembly; the test seat 3 has a test slot 31 for carrying the object to be tested; the pressure head assembly 4 is arranged opposite to the test slot 31, and the pressure head assembly 4 is configured to perform linear reciprocating motion in a direction perpendicular to the bottom of the test slot 31, and the pressure head assembly 4 is used to apply a load to the object to be tested when extending into the test slot 31; the front of the test plate has a pressure testing area corresponding to the position of the test seat 3, and the test plate is used to communicate and connect with the object to be tested, thereby realizing the test of the object to be tested, and the back of the test plate is supported on the support assembly.
[0069] When in use, the pressure head assembly 4 moves downward in a direction perpendicular to the bottom of the test slot 31, applying a pressure load to the object to be tested in the test slot 31, and the test seat 3 transfers the pressure to the pressure test area of the test plate. Since the concave and convex surface 21 of the supporting substrate 2 can support the back of the pressure test area of the test plate, the deformation and damage of the test plate under pressure can be effectively avoided, thereby ensuring the effective implementation of the pressure test operation. It is not only suitable for test plates of small size, but also for test plates of larger size, and has good compatibility.
[0070] Specifically, the test board and the object to be tested may be electrically connected or signal connected.
[0071] In an optional embodiment, if Figure 5 As shown, the outer shell of the test socket 3 is provided with a rectangular substrate body 8, and the test socket 3 is embedded in the substrate body 8. Since the test object is repeatedly taken in and out for a long time, it is very likely to cause certain wear and tear around the test slot 31. The embedded design increases the convenience of subsequent maintenance and replacement.
[0072] Specifically, the substrate body 8 and the test seat 3 are firstly matched with the positioning pins on the substrate body 8 and the positioning pin holes at the bottom of the test seat 3 and then locked with four bolts to ensure the accuracy of the position of the test slot 31.
[0073] In an optional embodiment, if Figure 6 As shown, the indenter assembly 4 includes an indenter body 41 , and the indenter body 41 is used to pick up the object to be measured.
[0074] In an optional embodiment, if Figures 7 to 11 As shown, a pressure-bearing substrate 5 is connected to the side of the test seat 3 facing the pressure head assembly 4 , and the pressure-bearing substrate 5 is provided with a through hole 51 for the pressure head body 41 to pass through.
[0075] like Figure 10 As shown, the pressure-bearing substrate 5 has a mounting hole 54 , and the connector can pass through the mounting hole 54 and then be inserted into the test socket 3 to achieve the connection between the pressure-bearing substrate 5 and the test socket 3 .
[0076] In an optional embodiment, if Figure 9 and Figure 10 As shown, a gasket 52 for being sandwiched between the pressure-bearing substrate 5 and the pressure-bearing substrate 4 is provided on the side of the pressure-bearing substrate 5 facing the pressure head assembly 4 , and the gasket 52 is detachably connected to the pressure-bearing substrate 5 .
[0077] The gasket 52 is available in various thicknesses, allowing replacement of gaskets 52 of varying thicknesses depending on the thickness of the object being tested, thereby increasing the compatibility of the indenter assembly 4 and the pressure-receiving substrate 5. When the object being tested is thicker, a thicker gasket 52 can be used; when the object being tested is thinner, a thinner gasket 52 can be used or even eliminated altogether, thereby expanding the compatibility of the product.
[0078] Specifically, if Figure 9 As shown, on the pressing head assembly 4 , the lower surface 44 of the pressing head assembly 4 abutting against the gasket 52 is disposed around the outer side of the pressing head body 41 .
[0079] The lower surface 44 can be regarded as the bottom surface of the main board body in the pressing head assembly 4 . The main board body and the pressing head body 41 can have an integrated structure to ensure structural strength.
[0080] In an optional embodiment, if Figure 10 As shown, a plurality of positioning pins 53 are provided on the side of the pressure base plate 5 facing the pressure head assembly 4. Figure 6 As shown, the pressure head assembly 4 has multiple positioning holes corresponding to the multiple positioning pins 53. In order to prevent the positioning pins 53 from getting stuck when assembling with the positioning holes, the multiple positioning holes include at least one round hole 42 and at least one waist-shaped hole 43.
[0081] In the above embodiment, the cooperation between the positioning pin 53 and the positioning hole facilitates the initial alignment of the pressure head assembly 4 and the pressure-bearing substrate 5, ensures the accurate position of the pressure head assembly 4 when pressing down, and prevents the pressure head assembly 4 from being pressed off.
[0082] In an optional embodiment, if Figure 10 As shown, the surface of the pressure substrate 5 facing the pressure head assembly 4 has a length direction and a width direction that are perpendicular to each other, and the angle between the line projected by at least two positioning pins 53 on the above surface and the length direction is not 0 degrees, and the angle between the line and the width direction is also not 0 degrees. In this way, the above-mentioned several positioning pins 53 can not only limit the position of the pressure head assembly 4 in the length direction, but also limit the position of the pressure head assembly 4 in the width direction.
[0083] by Figure 6 and Figure 10 For example, two positioning pins 53 are configured, and two positioning holes are also configured, one is a round hole 42 and the other is a waist-shaped hole 43.
[0084] In an optional embodiment, the pressure measuring device further includes a frame crossbeam 6 , on which a fixed mounting seat 7 is mounted, and the fixed mounting seat 7 supports the support base plate 2 .
[0085] During assembly, if Figure 12 As shown, the support base plate 2 can be fixed on the fixed mounting seat 7 of the frame beam 6. Specifically, the support base plate 2 has four countersunk screw holes reserved according to the hole positions on the fixed mounting seat 7 for fixing the support base plate 2 on the frame beam 6.
[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A support assembly, characterized in that: The invention comprises a support and limiting plate (1) and a support base plate (2), wherein the support and limiting plate (1) has a top surface (11) for facing the back of a test plate, the support base plate (2) is connected to the support and limiting plate (1) and the support base plate (2) protrudes from the top surface (11), and the portion of the support base plate (2) protruding from the top surface (11) has a concave-convex surface (21), the concave portion of the concave-convex surface (21) is used to avoid the device on the back of the pressure test area of the test plate, and the convex portion (211) of the concave-convex surface (21) is used to support the back of the test plate; The top surface (11) is provided with a supporting structure (12) protruding therefrom. The supporting structure (12) comprises a plurality of supporting members (121) for supporting the back side of the test board. The plurality of supporting members (121) are spaced apart from the portion of the supporting substrate (2) protruding from the top surface (11).
2. The support assembly according to claim 1, wherein: The top surface (11) is provided with a limiting structure (13) for limiting the position of the test plate relative to the top surface (11).
3. The support assembly according to claim 2, characterized in that The support structure (12) comprises a plurality of support members (121) for supporting the back side of the test board, and the plurality of support members (121) are at least partially distributed on the edge of the top surface (11).
4. The support assembly according to claim 3, characterized in that The limiting structure (13) comprises a plurality of limiting members (131), the top surface (11) has a length direction and a width direction that are perpendicular to each other, and the angles between a line projected by at least two of the limiting members (131) on the top surface (11) and the length direction and the width direction are not 0 degrees.
5. The support assembly according to claim 4, characterized in that Among the plurality of limiting members (131), the distance between two limiting members (131) that are farthest apart is a first distance; Among the plurality of support members (121), the distance between two support members (121) that are farthest apart is a second distance, and the second distance is less than or equal to the first distance.
6. The support assembly according to claim 4, wherein: The limiting member (131) comprises a connecting portion (1311), a supporting portion (1312) and a limiting portion (1313); the connecting portion (1311) is connected to the supporting limiting plate (1); the supporting portion (1312) is connected between the connecting portion (1311) and the limiting portion (1313); the end face of the supporting portion (1312) facing away from the connecting portion (1311) is flush with the end face of the back side of the supporting member (121) for supporting the test plate; and the end of the limiting portion (1313) facing away from the supporting portion (1312) is tapered.
7. The support assembly according to any one of claims 1 to 6, characterized in that: At least the concave-convex surface (21) on the supporting substrate (2) is provided with an antistatic layer.
8. A pressure measurement device, characterized in that: It comprises a test plate, a test seat (3), a pressure head assembly (4) and a support assembly according to any one of claims 1 to 7; The test seat (3) has a test slot (31) for carrying a test object; The pressure head assembly (4) is arranged opposite to the test slot (31), and the pressure head assembly (4) is configured to perform linear reciprocating motion in a direction perpendicular to the bottom of the test slot (31). When the pressure head assembly (4) is inserted into the test slot (31), it is used to apply a load to the object to be tested; The front of the test board has a pressure test area at a position corresponding to the test seat (3); the test board is used for communication connection with the object to be tested; and the back of the test board is supported by the support assembly.
9. The pressure measurement device according to claim 8, characterized in that: A pressure-bearing substrate (5) is connected to a side of the test seat (3) facing the pressure head assembly (4), and the pressure-bearing substrate (5) is provided with a through hole (51) for the pressure head assembly (4) to pass through; The pressure-bearing substrate (5) is provided with a gasket (52) for being clamped between the pressure-bearing substrate (5) and the pressure-bearing substrate (4) on one side facing the pressure head assembly (4), and the gasket (52) is detachably connected to the pressure-bearing substrate (5), and / or the pressure-bearing substrate (5) is provided with a plurality of positioning pins (53) on one side facing the pressure head assembly (4), and the pressure head assembly (4) has a plurality of positioning holes arranged in a one-to-one correspondence with the plurality of positioning pins (53), and the plurality of positioning holes include at least one circular hole (42) and at least one waist-shaped hole (43).
10. The pressure measurement device according to claim 8, characterized in that: It also includes a frame crossbeam (6), on which a fixed mounting seat (7) is mounted, and the fixed mounting seat (7) supports the support base plate (2).