Test tool

Abstract

The utility model relates to a test tool. The testing tool is used for testing a differential pressure sensor and comprises a base and a pressurizing mechanism. The base is provided with a plurality of mounting positions for placing differential pressure sensors, the base is provided with through holes and a detection structure, all the mounting positions are communicated with the outside through the through holes, and contacts of the detection structure are in one-to-one correspondence with the mounting positions; the pressurizing mechanism is movably connected with the base and is provided with a pressurizing channel, and the pressurizing channel is communicated with all the mounting positions; the pressurizing mechanism has an opening state for exposing the mounting position and a buckling state for shielding the mounting position, in the buckling state, the differential pressure sensor is pressed by the pressurizing mechanism to abut against the contact of the detection structure and is electrically connected with the detection structure, and a pressure difference is formed between the two sides of the differential pressure sensor. The test tool structure provided by the embodiment of the utility model is convenient to operate, can test differential pressure sensors in batches, improves the universality of test work, and reduces the waste of test resources.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of auxiliary tools, in particular to a test tool. BACKGROUND

[0002] The differential pressure sensor is a sensor for measuring the difference between two pressures by using a micro-nano processing chip, which is generally used to measure the pressure difference between the front and back of a device or component. Since the differential pressure sensor has the defects of high sensitivity and easy damage, it needs to be detected after leaving the factory to ensure its normal use. At present, test tools are generally used to test the performance of the differential pressure sensor. However, the structure of these test tools is complex, the operation is cumbersome, and it is not convenient for users to operate. CONTENT OF THE UTILITY MODEL

[0003] The present application aims at the problem of the existing test tool structure being complex, the operation being cumbersome, and the user operation being inconvenient, and proposes a test tool, which has the technical effect of simple structure and convenient user operation.

[0004] A test tool for testing a differential pressure sensor, comprising:

[0005] A base provided with a plurality of mounting positions for placing the differential pressure sensor, the base being provided with a through hole and a detection structure, the through hole being communicated with all the mounting positions and the outside, and the contact of the detection structure corresponding to each mounting position one by one;

[0006] A pressurizing mechanism movably connected with the base, the pressurizing mechanism being provided with a pressurizing channel, and the pressurizing channel being communicated with all the mounting positions;

[0007] The pressurizing mechanism has an open state for exposing the mounting positions and a buckling state for shielding the mounting positions, in the buckling state, the differential pressure sensor is pressed by the pressurizing mechanism to abut against the contact of the detection structure and is electrically connected with the detection structure, and a pressure difference is formed on both sides of the differential pressure sensor.

[0008] In one of the embodiments, the pressurizing mechanism comprises a cover plate and a connector, the connector is used to externally connect a pressurizing device, the connector is detachably connected with the cover plate, the connector is provided with a first sub-channel, the cover plate is provided with a second sub-channel, the first sub-channel and the second sub-channel are communicated to form the pressurizing channel together, and the second sub-channel corresponds to the mounting position one by one.

[0009] In one of the embodiments, the pressurizing mechanism further comprises a first fixed support, the first fixed support bears the cover plate and is detachably connected with the cover plate, one end of the first fixed support is rotatably connected with the base, and the other end is clamped with the base;

[0010] In the buckling state, the cover plate shields the mounting position.

[0011] In one of the embodiments, the first fixed support is internally provided with a first avoiding hole, and the cover plate is installed in the first avoiding hole.

[0012] In one of the embodiments, the pressing mechanism further comprises a buckle member, which is rotatably arranged on the first fixed support and detachably connected with the first fixed support, and the base is provided with a clamping portion, and in the buckling state, the buckle member is clamped with the clamping portion.

[0013] In one of the embodiments, the base further comprises a seat body, which is provided with the mounting position, and one end of the seat body is connected with the pressing mechanism, and the other end is detachably connected with the detection structure.

[0014] In one of the embodiments, the detection structure comprises a detachably connected probe structure and a circuit board, the probe structure is located between the circuit board and the seat body, and a probe of the probe structure is connected with the circuit board at one end and located in the mounting position at the other end.

[0015] In one of the embodiments, the probe structure comprises a first plate and a second plate which are detachably connected and together form a probe position for fixing the probe.

[0016] In one of the embodiments, the first plate, the second plate and the circuit board are all provided with the through hole in communication.

[0017] In one of the embodiments, the base further comprises a second fixed support, which is detachably connected with the seat body and bears the first plate, the second plate and the circuit board, and the second fixed support is further connected with the pressing mechanism.

[0018] The above test tool has simple structure and reduces the manufacturing cost. After the differential pressure sensor to be tested is placed in the mounting position on the base, the pressing mechanism is installed on the base to test the differential pressure sensor together, which is convenient for user operation. Moreover, the number and shape of the mounting position can be changed according to the differential pressure sensor to be tested, the differential pressure sensor can be tested in batches, the universality of the test work is improved, and the waste of test resources is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The test tool provided by some embodiments of the present application is shown in the perspective view.

[0020] Figure 2 The test tool provided by some embodiments of the present application is shown in the exploded view.

[0021] Figure 3 A perspective view of a seat body of a test tool provided for some embodiments of the present application.

[0022] Figure 4 A perspective view of a cover plate of a test tool provided for some embodiments of the present application.

[0023] Legend of reference signs:

[0024] 10, base; 11, mounting position; 111, through hole; 12, detection structure; 121, probe structure; 1211, first plate; 1212, second plate; 1213, probe; 122, circuit board; 13, seat body; 14, second fixing support; 141, second avoiding hole; 20, pressing mechanism; 21, pressing channel; 22, cover plate; 221, second sub-channel; 23, joint; 231, first sub-channel; 24, first fixing support; 241, first avoiding hole; 25, buckle; 100, test tool; 200, differential pressure sensor. DETAILED DESCRIPTION

[0025] In order to make the above objectives, characteristics and advantages of the present application more apparent, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to provide a sufficient understanding of the present application. However, the present application can be implemented in many different ways other than those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0027] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In the present application, unless specifically defined otherwise and limited, the terms "mounting", "connected", "connection", "fixed", and like terms should be construed in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be direct connection, can also be indirect connection through intermediate medium, can be internal communication of two elements or interaction relationship between two elements, unless specifically defined otherwise. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] In the present application, unless specifically defined otherwise and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0030] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only embodiment.

[0031] Please refer to Figure 1 and Figure 2 , an embodiment of the present application provides a test tool 100 for testing a differential pressure sensor 200, the test tool 100 comprising a base 10 and a pressurizing mechanism 20. The base 10 is provided with a plurality of mounting positions 11 for placing the differential pressure sensor 200, the base 10 is provided with a through hole 111 and a detection structure 12, the through hole 111 is communicated with all the mounting positions 11 and the outside, the contacts of the detection structure 12 correspond one-to-one to each mounting position 11; the pressurizing mechanism 20 is movably connected with the base 10, the pressurizing mechanism 20 is provided with a pressurizing channel 21, the pressurizing channel 21 is communicated with all the mounting positions 11; the pressurizing mechanism 20 has an open state of exposing the mounting positions 11 and a buckling state of shielding the mounting positions 11, in the buckling state, the differential pressure sensor 200 is pressed by the pressurizing mechanism 20 to abut against the contacts of the detection structure 12, and is electrically connected with the detection structure 12, and a pressure difference is formed on both sides of the differential pressure sensor 200.

[0032] Exemplarily, please refer to Figure 3The base 10 is provided with four mounting positions 11, each of which can place a differential pressure sensor 200 to be tested. The mounting position 11 is also provided with a through hole 111 and a detection structure 12 to change the annular pressure of the differential pressure sensor 200 to be tested and realize the electrical connection of each differential pressure sensor 200 to be tested.

[0033] The connection between the pressurizing mechanism 20 and the base 10 can be but not limited to threaded connection, clamping. The pressurizing channel 21 of the pressurizing mechanism 20 can be connected with the external pressurizing equipment to deliver gas to the pressurizing channel 21, so as to change the pressure.

[0034] The working principle of the test tool 100 will be described below in combination with the differential pressure sensor 200 to be tested.

[0035] Taking a differential pressure sensor 200 to be tested as an example, when the test tool 100 is used, the pressurizing mechanism 20 is in an open state, and the differential pressure sensor 200 to be tested can be placed in the mounting position 11. Then, the pressurizing mechanism 20 and the base 10 are connected together, and the pressurizing mechanism 20 is connected with the external pressurizing equipment. When the pressurizing mechanism 20 and the base 10 are connected, they can abut against the differential pressure sensor 200 and push the differential pressure sensor 200 to abut against the detection structure 12 on the mounting position 11, realizing the electrical connection of the two.

[0036] When the pressurizing mechanism 20 and the base 10 are connected together, because the differential pressure sensor 200 to be tested covers the through hole 111 on the mounting position 11, a closed space can be formed between the side of the differential pressure sensor 200 to be tested facing the pressurizing mechanism 20 and the pressurizing mechanism 20. The gas input from the pressurizing channel 21 of the pressurizing equipment can enter the mounting position 11, so as to change the pressure of the side of the differential pressure sensor 200 to be tested facing the pressurizing mechanism 20. Because the through hole 111 on the mounting position 11 is connected with the outside, the side of the differential pressure sensor 200 to be tested facing the mounting position 11 can sense the atmospheric pressure, and the pressure of this side is smaller. Therefore, the two sides of the differential pressure sensor 200 to be tested form a pressure difference.

[0037] Finally, the detection structure 12 is connected with a power supply, and the differential pressure sensor 200 to be tested can start to work, so as to realize the test of the accuracy of the differential pressure sensor 200.

[0038] The above arrangement simplifies the structure of the test tool 100 and reduces manufacturing cost. After the differential pressure sensor 200 to be tested is placed on the mounting position 11 of the base 10, the pressurizing mechanism 20 is installed on the base 10 to test the differential pressure sensor 200 together, which is convenient for users to operate. Moreover, the number and shape of the mounting position 11 can be changed according to the differential pressure sensor 200 to be tested, and the differential pressure sensor 200 can be tested in batches, which improves the universality of the test work and reduces the waste of test resources.

[0039] As shown in Figure 1 , Figure 2 and Figure 4 , in some embodiments, the pressurizing mechanism 20 includes a cover plate 22 and a connector 23, the connector 23 is used to externally connect a pressurizing device, the connector 23 is detachably connected with the cover plate 22, the connector 23 is provided with a first sub-channel 231, the cover plate 22 is provided with a second sub-channel 221, the first sub-channel 231 and the second sub-channel 221 communicate to form a pressurizing channel 21, and the second sub-channel 221 corresponds to the mounting position 11 one by one.

[0040] The connection mode between the cover plate 22 and the connector 23 can be, but is not limited to, threaded connection, clamping. The number of the second sub-channels 221 provided on the cover plate 22 is equal to the number of the mounting positions 11, and the second sub-channels 221 and the mounting positions 11 have a one-to-one correspondence. One end of each second sub-channel 221 communicates with the corresponding mounting position 11, and the other end communicates with the first sub-channel 231.

[0041] Exemplarily, as shown in Figure 4 , the cover plate 22 is provided with four second sub-channels 221, and the four second sub-channels 221 can enclose a closed passage. In order to facilitate processing, a processing channel is also provided on the cover plate 22, the number of the processing channel is equal to the number of the second sub-channels 221, and the processing channel communicates with the second sub-channels 221. The processing channel is provided with a plugging member (such as a flat-end set screw), which is sealed in the processing channel by glue, so as to seal the passage, so that all the second sub-channels 221 can communicate to form a sealed passage, and the probability of pressure relief due to gas leakage of the wall of the channel is reduced.

[0042] In this way, when at least one of the cover plate 22 and the connector 23 is damaged, the damaged one can be replaced with a new component, which reduces the maintenance cost compared with replacing the cover plate 22 and the connector 23 at the same time. In addition, the connector 23 can also be replaced according to the externally connected pressurizing device, which expands the use range of the test tool 100.

[0043] In some embodiments, the pressing mechanism 20 further comprises a first fixed support 24, which carries the cover plate 22 and is detachably connected with the cover plate 22, one end of the first fixed support 24 is rotatably connected with the base 10, and the other end is clamped with the base 10; wherein, in the buckling state, the cover plate 22 shields the mounting position 11.

[0044] Exemplarily, the first fixed support 24 and the cover plate 22 are connected together through bolts or the like. One end of the first fixed support 24 is provided with a rotating hole, and the base 10 is provided with a rotating shaft, the rotating shaft penetrates the rotating hole to realize the movable connection with the first fixed support 24. Because the cover plate 22 is installed on the first fixed support 24, rotating the first fixed support 24 can drive the cover plate 22 to rotate, so as to press the differential pressure sensor 200 to be tested to contact with the detection mechanism through the cover plate 22, and realize the test of the differential pressure sensor 200.

[0045] As to the additional first fixed support 24 detachably connected with the cover plate 22, and the first fixed support 24 only has the functions of carrying the cover plate 22 and connecting the base 10, it is to reduce the probability of damage of the cover plate 22, and when at least one of the first fixed support 24 and the cover plate 22 is damaged, the damaged part can be replaced with a new part, which reduces the maintenance cost.

[0046] Specifically, as shown in Figure 2 In some embodiments, the first fixed support 24 is internally provided with a first avoiding hole 241, and the cover plate 22 is installed in the first avoiding hole 241.

[0047] For example, the wall of the first avoiding hole 241 in the middle of the first fixed support 24 is annular and stepped, and the side wall of the cover plate 22 is fitted with the wall of the first avoiding hole 241. In this way, on the basis of reducing the size of the first fixed support 24 and the cover plate 22, the contact area between the two is increased, and the connection stability between the two is improved.

[0048] As shown in Figure 2 The pressing mechanism 20 further comprises a clamping part 25, which is rotatably arranged on the first fixed support 24 and is detachably connected with the first fixed support 24, and the base 10 is provided with a clamping part, and in the buckling state, the clamping part 25 is clamped with the clamping part.

[0049] Exemplarily, the first fixed support 24 is provided with a rotating shaft, and the clamping part 25 is rotatably connected with the rotating shaft. The base 10 is provided with a protrusion, which is configured as a clamping part. When the first fixed support 24 is attached with the base 10, the clamping part 25 can be rotated in the direction of the clamping part, and is clamped with the clamping part. At this time, the first fixed support 24 cannot rotate relative to the base 10, and the differential pressure sensor 200 to be tested is limited between the first fixed support 24 and the base 10.

[0050] Once the differential pressure sensor 200 has been tested, it needs to be removed from the base 10. The buckle 25 can be rotated in the opposite direction to separate it from the locking part, so that the user can rotate the first fixing bracket 24 to remove the differential pressure sensor 200 from the base 10.

[0051] The above configuration not only simplifies the connection between the first fixed bracket 24 and the buckle 25, but also makes it easy to replace the damaged buckle 25 with a new one when the buckle 25 is damaged.

[0052] like Figure 2 As shown, in some embodiments, the base 10 further includes a seat 13, which has a mounting position 11. One end of the seat 13 is connected to the pressurizing mechanism 20, and the other end is detachably connected to the detection structure 12.

[0053] The detection structure 12 can be installed on the lower part of the base 13 by fasteners such as bolts. The base 13 may be provided with the above-mentioned snap-fit ​​part to connect with the pressure mechanism 20.

[0054] Because the detection structure 12 can be connected to an external power source, while the base 13 does not have components such as the circuit board 122, the functions of the detection structure 12 and the base 13 are not interconnected. By making the base 13 and the detection structure 12 detachable, if either the base 13 or the detection structure 12 is damaged, the damaged component can be replaced with a new one, reducing maintenance costs compared to replacing both.

[0055] Furthermore, the detection structure 12 includes a detachably connected probe structure 121 and a circuit board 122. The probe structure 121 is located between the circuit board 122 and the base 13. One end of the probe 1213 of the probe structure 121 is connected to the circuit board 122, and the other end is located in the mounting position 11.

[0056] The connection between the probe structure 121 and the circuit board 122 can be, but is not limited to, snap-fit ​​or connection via bolts or other components. The probe 1213 can be constructed with elastic extension and retraction at both ends to protect the differential pressure sensor 200 under test without affecting the contact between the probe 1213 and the differential pressure sensor 200 under test, thereby reducing the probability of the differential pressure sensor 200 being punctured by the probe 1213.

[0057] When the differential pressure sensor 200 to be tested is placed in the mounting position 11, the pressurizing mechanism 20 and the base 13 are connected. The differential pressure sensor 200 to be tested is pushed by the pressurizing mechanism 20, so that it can contact the probe 1213 in the mounting position 11 and conduct electricity with the circuit board 122.

[0058] The detachable connection between the probe structure 121 and the circuit board 122 is to replace the damaged part with a new part when any one of the probe structure 121 and the circuit board 122 is damaged, thereby reducing the maintenance cost compared with replacing both.

[0059] Further, as shown in some embodiments, the probe structure 121 includes a first plate 1211 and a second plate 1212 stacked together, and the first plate 1211 and the second plate 1212 are detachably connected and together form a probe 1213 position for fixing the probe 1213. Figure 2

[0060] The first plate 1211 and the second plate 1212 are made of the same material, which can be an epoxy resin plate material. The first plate 1211 and the second plate 1212 can be connected together by bolts, but are not limited thereto.

[0061] For example, the first plate 1211 is provided with a first probe 1213 hole, and the second plate 1212 is provided with a second probe 1213 hole. The number of the first probe 1213 holes is equal to the number of the second probe 1213 holes. The first probe 1213 hole and the second probe 1213 hole are in one-to-one correspondence and are connected in the thickness direction of the plate. One first probe 1213 hole and one second probe 1213 hole together form a probe 1213 position. After the probe 1213 is inserted into the probe 1213 position, the two end portions of the probe 1213 extend out of the first plate 1211 and the second plate 1212. One end of the probe 1213 is connected to the circuit board 122, and the other end is located in the mounting position 11.

[0062] For example, the single differential pressure sensor 200 in the embodiment of the present application needs to be equipped with four probes 1213 to lead out the corresponding circuit. That is, one mounting position 11 is equipped with four probes 1213.

[0063] The above arrangement can effectively position the probe 1213 and reduce the displacement of the probe 1213 during use, thereby affecting the probability of the to-be-tested differential pressure sensor 200 being connected to the circuit board 122.

[0064] In some embodiments, the first plate 1211, the second plate 1212, and the circuit board 122 are all provided with through holes 111 that are connected.

[0065] For example, the first plate 1211, the second plate 1212, and the circuit board 122 are all provided with through holes 111 that are connected in the thickness direction of the plate. The through holes 111 of the first plate 1211, the second plate 1212, and the circuit board 122 are connected to the through holes 111 of the mounting position 11 to communicate with the outside and allow air from the outside to enter.

[0066] ​In this way, the through hole 111 is easy to be formed, and the pressure difference on both sides of the differential pressure sensor 200 to be tested is easy to be formed during the testing process.

[0067] As shown in the drawings, in some embodiments, the base 10 further comprises a second fixing support 14, which is detachably connected with the seat body 13 and carries a first plate 1211, a second plate 1212 and a circuit board 122. The second fixing support 14 is further connected with the pressurizing mechanism 20. Figure 2

[0068] The first plate 1211, the second plate 1212 and the circuit board 122 can be located on the side of the second fixing support 14 away from the pressurizing mechanism 20. Thus, the connection between the second fixing support 14 and the pressurizing mechanism 20 can realize the connection between the base 10 and the pressurizing mechanism 20.

[0069] The second fixing support 14 can be internally provided with a second avoiding hole 141, and the seat body 13 is arranged in the second avoiding hole 141 and in contact with the hole wall of the second avoiding hole 141, so as to reduce the size of the whole formed by the second fixing support 14 and the seat body 13.

[0070] The second fixing support 14 is additionally arranged to be detachably connected with the seat body 13, and the second fixing support 14 only has the function of carrying the seat body 13 and the like and connecting the pressurizing mechanism 20, so as to reduce the probability of damage of the seat body 13. When at least one of the second fixing support 14 and the seat body 13 is damaged, the damaged part can be replaced with a new part, so as to reduce the maintenance cost.

[0071] The technical features of the above-described embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0072] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, however, it should not be understood as the limitation of the patent application scope. It should be pointed out that, for those skilled in the art, several modifications 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 patent protection scope of the present application should be subject to the appended claims.​

Claims

1. A test fixture for testing a differential pressure sensor, the test fixture comprising: The utility model relates to a differential pressure sensor detection device, including: a base is equipped with a plurality of installation sites for placing differential pressure sensor, the base is equipped with a through hole and detection structure, the through hole is communicated with all the installation sites and the outside world, the contact of detection structure and each installation site one to one corresponds; a pressurizing mechanism is movably connected with the base, and the pressurizing mechanism is provided with a pressurizing channel, and the pressurizing channel is communicated with all the installation sites; The pressurizing mechanism has an open state of exposing the installation site and a buckling state of shielding the installation site, in the buckling state, the differential pressure sensor is pressed by the pressurizing mechanism to abut with the contact of the detection structure, and is electrically connected with the detection structure, and the both sides of the differential pressure sensor form a pressure difference.

2. The test fixture of claim 1, wherein, The pressurizing mechanism includes a cover plate and a connector, the connector is used for external connection of a pressurizing device, the connector is detachably connected with the cover plate, the connector is provided with a first subchannel, the cover plate is provided with a second subchannel, the first subchannel and the second subchannel are communicated to form the pressurizing channel together, and the second subchannel corresponds to the installation site one to one.

3. The test fixture of claim 2, wherein, The pressurizing mechanism further includes a first fixed support, the first fixed support bears the cover plate, and is detachably connected with the cover plate, one end of the first fixed support is rotatably connected with the base, and the other end is clamped with the base; Wherein, in the buckling state, the cover plate shields the installation site.

4. The test fixture of claim 3, wherein, The inside of the first fixed support is provided with a first avoiding hole, and the cover plate is installed in the first avoiding hole.

5. The test fixture of claim 3, wherein, The pressurizing mechanism further includes a buckle piece, the buckle piece is rotatably arranged on the first fixed support, and is detachably connected with the first fixed support, the base is provided with a clamping portion, and in the buckling state, the buckle piece is clamped with the clamping portion.

6. The test fixture of claim 1, wherein, The base further includes a seat body, the seat body is provided with the installation site, one end of the seat body is connected with the pressurizing mechanism, and the other end is detachably connected with the detection structure.

7. The test fixture of claim 6, wherein, The detection structure includes a detachably connected probe structure and a circuit board, the probe structure is located between the circuit board and the seat body, one end of the probe of the probe structure is connected with the circuit board, and the other end is located in the installation site.

8. The test fixture of claim 7, wherein, The probe structure includes a first plate and a second plate arranged one on another, the first plate and the second plate are detachably connected, and both of them jointly form a probe site for fixing the probe.

9. The test fixture of claim 8, wherein, The first plate, the second plate and the circuit board are all provided with the through hole communicated.

10. The test fixture of claim 8, wherein, The base further includes a second fixed support, the second fixed support is detachably connected with the seat body, and bears the first plate, the second plate and the circuit board, and the second fixed support is further connected with the pressurizing mechanism.

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