Test tooling

Abstract

The present invention relates to a test fixture for testing the resistance of a conductive sponge, comprising a pressure plate assembly, an adjustment assembly and at least two conducting wires, wherein the pressure plate assembly comprises a first pressure plate and a second pressure plate, wherein the first pressure plate and the second pressure plate are stacked and arranged at intervals, and are used to squeeze the conductive sponge, wherein the inner side surface of the first pressure plate and the inner side surface of the second pressure plate both have a first conductive layer for electrically connecting to the conductive sponge, and each first conductive layer is electrically connected to at least one conducting wire; the adjustment assembly is detachably arranged on the pressure plate assembly, and is used to drive the first pressure plate and the second pressure plate to move away from or close to each other to adjust the compression amount of the conductive sponge. The above-mentioned test fixture can adjust the spacing between the first pressure plate and the second pressure plate to a required distance through the adjustment assembly, and at this time, the conductive sponge between the first pressure plate and the second pressure plate is squeezed to a required thickness, so that the resistance value of the conductive sponge in actual use can be accurately measured, and the effect of precise measurement can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field related to conductive sponge testing, and in particular to a testing tool for testing the resistance value of a conductive sponge. Background Art

[0002] Conductive sponge is produced by polymer composite foaming technology. The foamed pore size is uniform, soft and elastic. It is a three-dimensional network structure functional material that integrates conductivity and electromagnetic shielding functions. It has the characteristics of long conductive validity period, good electromagnetic shielding effect and resistance can be set according to actual use. It is widely used in the field of conductive materials; consumer electronic products such as mobile phones and tablets usually need to stick a layer of conductive sponge on some of their internal electronic components to play the role of conductivity, anti-static and reduce electromagnetic radiation.

[0003] The resistance of various conductive sponges is an important aspect of their conductive properties. However, due to the characteristics of the conductive sponge itself, the resistance needs to be measured by uniform compression of the entire sponge. Direct measurement, local compression measurement, or uneven compression during measurement will lead to unreliable measured data. Summary of the invention

[0004] Based on this, it is necessary to provide a conductive sponge resistance test tool that can measure data more accurately in order to solve the problem that the measured data is easily inaccurate during the conductive sponge resistance test.

[0005] The present application provides a testing tool for testing the resistance of a conductive sponge, comprising a pressing plate assembly, an adjusting assembly and at least two conducting wires, wherein the pressing plate assembly comprises a first pressing plate and a second pressing plate, wherein the first pressing plate and the second pressing plate are stacked at intervals and are used to compress the conductive sponge, wherein the inner side surfaces of the first pressing plate and the inner side surfaces of the second pressing plate both have a first conductive layer for electrically connecting to the conductive sponge, and each of the first conductive layers is electrically connected to at least one of the conducting wires; the adjusting assembly is detachably arranged on the pressing plate assembly, and is used to drive the first pressing plate and the second pressing plate to move away from or closer to each other to adjust the compression amount of the conductive sponge.

[0006] The above-mentioned test fixture can adjust the spacing between the first pressing plate and the second pressing plate to the required distance by adjusting the component. At this time, the conductive sponge between the first pressing plate and the second pressing plate is squeezed to the required thickness, so that the resistance value of the conductive sponge in actual use can be accurately measured, thereby achieving the effect of precise measurement.

[0007] In one embodiment, the adjustment assembly includes at least two connecting members, a first blocking member and a second blocking member; the first pressure plate is provided with at least two first through holes, the second pressure plate is provided with second through holes corresponding to the first through holes, and each connecting member passes through one first through hole and a corresponding second through hole; the first blocking member is adjustably fixed to one side end of the connecting member passing through the first through hole, so as to abut against the first pressure plate; the second blocking member is located on the side of the second pressure plate away from the first pressure plate, and is used to abut against the second pressure plate.

[0008] It is understandable that by adjusting the position of the first blocking member fixed to the connecting member, the position between the first blocking member and the second blocking member can be adjusted, thereby achieving the effect of limiting the compression amount of the conductive sponge by adjusting the limit distance between the first pressing plate and the second pressing plate.

[0009] In one embodiment, the test fixture further includes a third blocking member, which is located between the first pressing plate and the second pressing plate and is used to limit the first pressing plate from moving along the axis direction of the connecting member toward a side close to the second pressing plate.

[0010] It can be understood that the third blocking member can limit the first pressure plate and the second pressure plate from approaching each other, and cooperate with the first blocking member and the second blocking member to achieve complete limiting of the first pressure plate and the second pressure plate along the axial direction of the connecting member, thereby avoiding the situation where the compression of the conductive sponge is greater than the required compression amount due to excessive adjustment of the first pressure plate.

[0011] In one embodiment, a plurality of the third blocking members are adjustably mounted on the connecting member to limit the limit value of the first pressing plate and the second pressing plate approaching each other.

[0012] In one embodiment, the third blocking member is adjustably fixed to the connecting member to limit the limit value of the first pressing plate and the second pressing plate approaching each other.

[0013] In one embodiment, a second conductive layer is provided on the outer side surface of the first pressing plate and the outer side surface of the second pressing plate; the first conductive layer and the second conductive layer on the first pressing plate are electrically connected; the first conductive layer and the second conductive layer on the second pressing plate are electrically connected; and the wire is electrically connected to the first conductive layer through the second conductive layer.

[0014] It can be understood that such a setting ensures electrical connection between the conductor and the first conductive layer while avoiding the first pressure plate and the second pressure plate from being close to each other and causing squeezing of the conductor, thereby avoiding the conductor affecting the compression of the conductive sponge, and further increasing the measurement accuracy of the conductive sponge.

[0015] In one embodiment, the test fixture also includes a base, which includes a base portion and a plurality of mounting seats protruding from the base portion, and each of the mounting seats is located in the same plane at one end away from the base portion to form a mounting position, and the second pressure plate is arranged at the mounting position.

[0016] It can be understood that by setting the second pressing plate at the installation position, it is possible to avoid the situation where the second conductive layer directly contacts the desktop and affects the measurement result, thereby increasing the measurement accuracy of the conductive sponge.

[0017] In one embodiment, the connecting member is a bolt column of a butterfly bolt, the second blocking member is a bolt head of the butterfly bolt, the base portion has a plurality of limiting portions corresponding one to one with the second blocking member, and the second blocking member is engaged with the corresponding limiting portions to limit the rotation of the connecting member; the first blocking member is a butterfly nut, and the butterfly nut can be threadedly connected to the connecting member.

[0018] It can be understood that the butterfly bolt and butterfly nut are easy for users to hold and rotate, which reduces the difficulty of adjusting the compression amount.

[0019] In one embodiment, a guide column is fixedly provided at one end of each mounting seat away from the base portion, and guide holes corresponding to the guide columns are formed through the first pressure plate and the second pressure plate, and the guide columns are slidably connected to the inner walls of the guide holes.

[0020] It is understandable that the guide column can guide the installation of the first pressure plate and the second pressure plate, making the installation easier, and can ensure that the first pressure plate and the second pressure plate are in a stacked state after being installed on the base.

[0021] In one embodiment, the first pressing plate and the second pressing plate are both provided with a plurality of via holes, and the via holes are used to connect the first conductive layer and the second conductive layer on both sides.

[0022] It can be understood that electrically connecting the first conductive layer and the second conductive layer through vias is simple, reliable and more aesthetically pleasing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1A schematic diagram of the three-dimensional structure of the test tooling of this application;

[0025] Figure 2 for Figure 1 Schematic diagram of the front view structure after hiding the wires;

[0026] Figure 3 for Figure 1 A schematic diagram of the three-dimensional structure of the first pressing plate and the second pressing plate;

[0027] Figure 4 for Figure 1 Schematic diagram of the three-dimensional structure of the middle base.

[0028] Figure numerals: 10, pressure plate assembly; 11, first pressure plate; 11a, first through hole; 12, second pressure plate; 12a, second through hole; 13, first conductive layer; 14, second conductive layer; 15, guide hole; 16, via; 20, adjustment assembly; 21, connector; 22, first blocking member; 23, second blocking member; 30, wire; 40, base; 41, base portion; 42, mounting seat; 43, limit portion; 44, guide column. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0030] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0034] Due to the soft and elastic characteristics of the conductive sponge, when measuring the resistance value of the conductive sponge, it is necessary to fully and evenly compress it before measuring. If the measurement is directly carried out without compression, the pins of the measuring device may pierce the conductive sponge, resulting in measurement failure; even if the measurement is successfully started, the pins are prone to jitter during the measurement process, resulting in unstable measurement values, which in turn affects the accuracy of the measurement results.

[0035] The existing conductive sponge resistance measurement tool compresses the conductive sponge only to ensure that the conductive sponge resistance value can be measured normally, so the compression amount of the conductive sponge is mostly a fixed value.

[0036] Please refer to the following Table 1. The inventors of the present application measured the resistance of the conductive sponge under different compression states and found that the resistance of the conductive sponge can be changed by squeezing the conductive sponge and changing the pore diameter of the foaming pores inside the conductive sponge.

[0037]

[0038] Since the conductive sponge is mostly in a squeezed state during actual use, and the degree of compression varies depending on the actual use situation, in order to ensure that the measured resistance value of the conductive sponge is equal to the resistance value during actual use and improve the measurement accuracy, it is necessary to measure the resistance value of the conductive sponge in the compressed state of actual use.

[0039] For the above questions, please combine Figure 1 and Figure 2As shown, the present application provides a test tool for conductive sponge resistance testing, including a pressure plate assembly 10, an adjustment assembly 20 and at least two conductive wires 30, the pressure plate assembly 10 includes a first pressure plate 11 and a second pressure plate 12, the first pressure plate 11 and the second pressure plate 12 are stacked at intervals and are used to squeeze the conductive sponge, the inner side surfaces of the first pressure plate 11 and the inner side surfaces of the second pressure plate 12 are provided with a first conductive layer 13 for electrically connecting to the conductive sponge, and each first conductive layer 13 is electrically connected to at least one conductive wire 30; the adjustment assembly 20 is detachably provided on the pressure plate assembly 10, and is used to drive the first pressure plate 11 and the second pressure plate 12 to move away from or closer to each other to adjust the compression amount of the conductive sponge.

[0040] The other ends of the two wires 30 are connected to a resistance measuring device, which can measure the resistance between the two end surfaces of the conductive sponge through the wires 30 and the first conductive layer 13; the spacing between the first pressing plate 11 and the second pressing plate 12 can be adjusted to the required distance by adjusting the component 20. At this time, the conductive sponge between the first pressing plate 11 and the second pressing plate 12 is squeezed to the required thickness (i.e., the thickness of the conductive sponge after being compressed during actual use), so that the resistance value of the conductive sponge during actual use can be accurately measured, thereby achieving the effect of precise measurement.

[0041] The stacked arrangement here refers to the first pressing plate 11 and the second pressing plate 12 being arranged parallel and opposite to each other, the conductive sponge being arranged at the interval position between the first pressing plate 11 and the second pressing plate 12, and the inner side surface refers to one side end surface of the first pressing plate 11 and the second pressing plate 12 respectively close to the interval position.

[0042] Please combine Figure 1 and Figure 3 As shown, in some embodiments, the adjustment assembly 20 includes at least two connecting members 21, a first blocking member 22 and a second blocking member 23; the first pressure plate 11 is provided with at least two first through holes 11a, the second pressure plate 12 is provided with second through holes 12a corresponding to the first through holes 11a, and each connecting member 21 passes through a first through hole 11a and a corresponding second through hole 12a; the first blocking member 22 is adjustably fixed to one side end of the connecting member 21 passing through the first through hole 11a, so as to abut against the first pressure plate 11; the second blocking member 23 is located on the side of the second pressure plate 12 away from the first pressure plate 11, and is used to abut against the second pressure plate 12.

[0043] The connecting member 21 passes through the first through hole 11 a and the second through hole 12 a to limit the first pressing plate 11 and the second pressing plate 12 from moving along the radial direction of the connecting member 21 , thereby ensuring that the first pressing plate 11 and the second pressing plate 12 are in a stacked state.

[0044] The first blocking member 22 and the second blocking member 23 can limit the first pressure plate 11 and the second pressure plate 12 from moving away from each other, and the elasticity generated by the conductive sponge after being compressed will prevent the first pressure plate 11 and the second pressure plate 12 from approaching each other. Therefore, by adjusting the position where the first blocking member 22 is fixed to the connecting member 21, the position between the first blocking member 22 and the second blocking member 23 can be adjusted, so as to achieve the effect of limiting the compression amount of the conductive sponge by adjusting the maximum distance between the first pressure plate 11 and the second pressure plate 12.

[0045] In some embodiments, the connecting member 21 may also be located outside the first pressing plate 11 and the second pressing plate 12 , as long as the first blocking member 22 and the second blocking member 23 can limit the first pressing plate 11 and the second pressing plate 12 from moving away from each other.

[0046] Please combine Figure 1 and Figure 2 As shown, in some embodiments, the test fixture also includes a third blocking member (not shown), which is located between the first pressure plate 11 and the second pressure plate 12 to limit the first pressure plate 11 from moving along the axial direction of the connecting member 21 toward the side close to the second pressure plate 12.

[0047] The third blocking member can limit the first pressure plate 11 and the second pressure plate 12 from approaching each other, and cooperate with the first blocking member 22 and the second blocking member 23 to achieve complete limiting of the first pressure plate 11 and the second pressure plate 12 along the axial direction of the connecting member 21, thereby avoiding the situation where the compression of the conductive sponge is greater than the required compression amount due to excessive adjustment of the first pressure plate 11.

[0048] In some embodiments, a plurality of third blocking members are adjustably sleeved on the connecting member 21 to limit the limit value of the first pressing plate 11 and the second pressing plate 12 approaching each other.

[0049] The adjustable here means that the stacking height of multiple third blocking members can be changed by adjusting the number of third blocking members, thereby changing the extreme position of the first pressure plate 11 and achieving limiting of different compression amounts; and by sleeve-arranging the third blocking members on the connecting member 21, the stacked third blocking members can be prevented from slipping or collapsing along the radial direction of the connecting member 21.

[0050] The third blocking member may be a gasket or other rigid parts, as long as they can be stacked and sleeved on the connecting member 21 .

[0051] In some embodiments, the third blocking member is adjustably fixed to the connecting member 21 to limit the limit value of the first pressing plate 11 and the second pressing plate 12 approaching each other.

[0052] By adjusting the position of the third blocking member fixed to the connecting member 21, the limit position of the first pressure plate 11 can be changed, thereby achieving the limitation of different compression amounts; the third blocking member and the connecting member 21 can be fixed by commonly used fixing methods such as threaded connection and clamping, as long as the third blocking member can be adjusted to be fixed to the connecting member 21.

[0053] In some embodiments, the second blocking member 23 is disposed between the first pressing plate 11 and the second pressing plate 12 , and can adjust its own height to limit the limit value of the first pressing plate 11 and the second pressing plate 12 approaching each other.

[0054] Please combine Figure 1 and Figure 3 As shown, in some embodiments, a second conductive layer 14 is provided on the outer side surface of the first pressing plate 11 and the outer side surface of the second pressing plate 12; the first conductive layer 13 and the second conductive layer 14 on the first pressing plate 11 are electrically connected; the first conductive layer 13 and the second conductive layer 14 on the second pressing plate 12 are electrically connected; and the wire 30 is electrically connected to the first conductive layer 13 through the second conductive layer 14.

[0055] Since the second conductive layer 14 is located on the outer side of the first pressure plate 11 and the second pressure plate 12, and the wire 30 is electrically connected to the first conductive layer 13 through the second conductive layer 14, while ensuring the electrical connection between the wire 30 and the first conductive layer 13, it avoids the first pressure plate 11 and the second pressure plate 12 being close to each other and squeezing the wire 30, thereby avoiding the wire 30 affecting the compression amount of the conductive sponge, and further increasing the measurement accuracy of the conductive sponge.

[0056] Please combine Figure 1 and Figure 4 As shown, in some embodiments, the test tool also includes a base 40, which includes a base portion 41 and a plurality of mounting seats 42 protruding from the base portion 41, and each mounting seat 42 is located in the same plane at one end away from the base portion 41, and forms a mounting position, and the second pressure plate 12 is arranged at the mounting position.

[0057] By arranging the second pressing plate 12 at the installation position, it is possible to avoid the situation where the second conductive layer 14 directly contacts the desktop and thus affects the measurement result, thereby increasing the measurement accuracy of the conductive sponge.

[0058] Please refer to Figure 1 As shown, in some embodiments, the connecting member 21 is a bolt column of a butterfly bolt, the second blocking member 23 is a bolt head of the butterfly bolt, the base portion 41 has a plurality of limiting portions 43 corresponding one to one with the second blocking member 23, and the second blocking member 23 is clamped with the corresponding limiting portions 43 to limit the rotation of the connecting member 21; the first blocking member 22 is a butterfly nut, and the butterfly nut can be threadedly connected to the connecting member 21.

[0059] The butterfly bolt and butterfly nut are convenient for users to hold and rotate, which reduces the difficulty of adjusting the compression amount.

[0060] In the above embodiment, the third blocking member is a nut threadedly connected to the connecting member 21 .

[0061] Please combine Figure 1 and Figure 4 As shown, in some embodiments, a guide column 44 is fixedly provided at one end of each mounting seat 42 away from the base portion 41, and guide holes 15 corresponding to the guide columns 44 are formed through the first pressure plate 11 and the second pressure plate 12, and the guide columns 44 are slidably connected to the inner walls of the guide holes 15.

[0062] The guide column 44 can guide the installation of the first pressing plate 11 and the second pressing plate 12 to facilitate the installation, and can ensure that the first pressing plate 11 and the second pressing plate 12 are in a stacked state after being installed on the base 40 .

[0063] Please combine Figure 1 and Figure 3 As shown, in some embodiments, the first pressing plate 11 and the second pressing plate 12 are both provided with a plurality of via holes 16 , and the via holes 16 are used to connect the first conductive layer 13 and the second conductive layer 14 on both sides.

[0064] The first conductive layer 13 and the second conductive layer 14 are electrically connected through the via 16 , which is simple, reliable and more beautiful.

[0065] In some embodiments, one of the second conductive layers 14 is electrically connected to multiple conductive wires 30 , and the multiple conductive wires 30 are electrically connected to different positions of the second conductive layer 14 , so that different conductive wires 30 can be selected for multiple tests to avoid the influence of accidental errors on the measurement results.

[0066] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A test tool for testing the resistance of a conductive sponge, characterized in that: The invention comprises a pressing plate assembly (10), an adjusting assembly (20) and at least two conducting wires (30), wherein the pressing plate assembly (10) comprises a first pressing plate (11) and a second pressing plate (12), wherein the first pressing plate (11) and the second pressing plate (12) are stacked and arranged at intervals and are used to press the conductive sponge, and the inner side surfaces of the first pressing plate (11) and the second pressing plate (12) both have a first conductive layer (13) for electrically connecting to the conductive sponge, and each of the first conductive layers (13) is electrically connected to at least one of the conducting wires (30); The first pressing plate (11) and the second pressing plate (12) are arranged parallel to and opposite to each other, the conductive sponge is arranged at a spacing position between the first pressing plate (11) and the second pressing plate (12), and the end surface of one side of the first pressing plate (11) and the second pressing plate (12) close to the spacing position is an inner side surface; The adjustment component (20) is detachably arranged on the pressure plate component (10), and is used to drive the first pressure plate (11) and the second pressure plate (12) to move away from or closer to each other so as to adjust the compression amount of the conductive sponge; The adjustment assembly (20) comprises at least two connecting members (21), a first blocking member (22) and a second blocking member (23); The first pressing plate (11) is provided with at least two first through holes (11a), the second pressing plate (12) is provided with second through holes (12a) corresponding to the first through holes (11a) one by one, and each connecting member (21) passes through one first through hole (11a) and one corresponding second through hole (12a); the first blocking member (22) is adjustably fixed to one end of the connecting member (21) passing through the first through hole (11a) to abut against the first pressing plate (11); the second blocking member (23) is located on a side of the second pressing plate (12) away from the first pressing plate (11) and is provided to abut against the second pressing plate (12); The test fixture further comprises a third blocking member, the third blocking member being located between the first pressing plate (11) and the second pressing plate (12) and being used to limit the first pressing plate (11) from moving along the axis direction of the connecting member (21) toward a side close to the second pressing plate (12); A second conductive layer (14) is provided on the outer side surface of the first pressing plate (11) and the outer side surface of the second pressing plate (12); the first conductive layer (13) and the second conductive layer (14) on the first pressing plate (11) are electrically connected; the first conductive layer (13) and the second conductive layer (14) on the second pressing plate (12) are electrically connected; and the conductive wire (30) is electrically connected to the first conductive layer (13) via the second conductive layer (14).

2. The test tool according to claim 1, characterized in that: The plurality of third blocking members are adjustably sleeved on the connecting member (21) to limit the limit value of the first pressing plate (11) and the second pressing plate (12) approaching each other.

3. The test tool according to claim 1, characterized in that: The third blocking member is adjustably fixed to the connecting member (21) to limit the limit value of the first pressing plate (11) and the second pressing plate (12) approaching each other.

4. The test tool according to claim 1, characterized in that: The test fixture further comprises a base (40), wherein the base (40) comprises a base portion (41) and a plurality of mounting seats (42) protruding from the base portion (41), wherein one end of each mounting seat (42) away from the base portion (41) is located in the same plane and forms a mounting position, and the second pressing plate (12) is arranged at the mounting position.

5. The test tool according to claim 4, characterized in that: The connecting member (21) is a bolt column of a butterfly bolt, the second blocking member (23) is a bolt head of the butterfly bolt, the base portion (41) has a plurality of limiting portions (43) corresponding to the second blocking members (23) one by one, the second blocking members (23) are engaged with the corresponding limiting portions (43) to limit the rotation of the connecting member (21); the first blocking member (22) is a butterfly nut, and the butterfly nut can be threadedly connected to the connecting member (21).

6. The test fixture according to claim 4, characterized in that: A guide column (44) is fixedly provided at one end of each mounting seat (42) away from the base portion (41); guide holes (15) corresponding to the guide columns (44) are formed through the first pressing plate (11) and the second pressing plate (12); and the guide columns (44) are slidably connected to the inner walls of the guide holes (15).

7. The test tool according to claim 1, characterized in that: The first pressing plate (11) and the second pressing plate (12) are both provided with a plurality of via holes (16), and the via holes (16) are used to connect the first conductive layer (13) and the second conductive layer (14) on both sides.

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