Test fixtures and test methods

Abstract

This invention discloses a testing fixture and its testing method. The testing fixture includes a base, a pressing component, and a fan. The surface of the base is provided with spaced mounting grooves and fixing grooves. A heat source is installed in the mounting groove, and the fixing groove is used to limit and fix the heat sink. The pressing component is disposed on the base and located above the mounting groove to press against the heat sink placed on the surface of the heat source. The fan is disposed on the base and located on one side of the fixing groove. The testing fixture of this invention can improve testing efficiency and accuracy, and reduce heat sink deformation.

Description

Technical Field

[0001] This invention relates to the field of radiator testing technology, and in particular to a testing fixture and its testing method. Background Technology

[0002] In various electronic devices, functional components and control components generate a lot of heat, thus forming heat sources in the device. In order for the normal operation of the device, a heat sink is usually installed to dissipate heat from the heat source. Therefore, the performance of the heat sink is also crucial to the operation of the device.

[0003] Currently, there are two main aspects to the performance testing of radiators: thermal performance testing and dimensional verification. However, existing testing fixtures require two separate devices to perform these performance tests, which is inefficient. Furthermore, the transfer between the two devices can easily cause deformation of the radiator, affecting the test results. Additionally, the gap between the heat source and the radiator creates contact thermal resistance, introducing errors into the thermal performance test results. Summary of the Invention

[0004] The main objective of this invention is to propose a testing fixture that aims to solve problems such as errors, low efficiency, and easy deformation when testing the thermal performance and dimensions of heat sinks.

[0005] To achieve the above objectives, the testing fixture proposed in this invention includes:

[0006] The base has spaced mounting grooves and fixing grooves on its surface. A heat source is installed in the mounting groove, and the fixing groove is used to limit and fix the heat sink.

[0007] A pressing assembly, disposed on the base and located above the mounting groove, to press against a heat sink placed on the surface of the heat source; and

[0008] A fan is mounted on the base and located on one side of the fixing groove.

[0009] Optionally, the pressing assembly includes a driving member and a pressing member. The driving member is mounted on the base, and the pressing member is connected to the driving shaft of the driving member and can reciprocate up and down relative to the base.

[0010] Optionally, the surface of the pressing member facing the base is formed with a contoured surface, which is adapted to fit the surface of the heat sink.

[0011] Optionally, the pressing component includes a fixing part and a contouring part. One side of the fixing part is connected to the drive shaft of the drive component, and the other side forms a limiting groove. The contouring part is installed in the limiting groove and partially protrudes from the opening of the limiting groove. The contouring part forms the contouring surface away from the surface of the drive component.

[0012] Optionally, the test fixture further includes an elastic element, one end of which abuts against the bottom wall of the mounting groove, and the other end of which abuts against the heat source.

[0013] Optionally, the driving component is a cylinder and is electrically connected to the testing machine, which has a display unit that shows the pressing force.

[0014] Optionally, the radiator includes a main body and a connecting pipe connected to one side of the main body. The opening shape of the fixing groove matches the shape of the main body, and the opening size of the fixing groove is adapted to the size of the main body. A buckle groove is provided on the surface of the base. The buckle groove is located at the edge of the opening of the fixing groove and communicates with the fixing groove. The heat source is connected to the other end of the connecting pipe.

[0015] Optionally, the surface of the base is further provided with a groove, which extends in a curved shape and is used to limit and fix the connecting pipe.

[0016] Optionally, the test fixture further includes a fan shroud, which forms a heat dissipation channel, with one end of the heat dissipation channel opening towards the fan and the other end opening towards the fixing groove.

[0017] And / or, the base includes a first base plate and a second base plate spaced apart from each other, and a support member connecting the first base plate and the second base plate. The first base plate has a mounting hole and the fixing groove, and the hole wall of the mounting hole and the second base plate enclose the mounting groove to form the mounting groove.

[0018] This invention also proposes a testing method for a testing fixture, the testing method comprising the following steps:

[0019] The testing device is placed in the heating channel of the testing machine;

[0020] The heat sink to be tested is fixed in the mounting slot and fixing slot of the base, respectively, and is electrically connected to the test device;

[0021] The pressing component is driven to press down onto the heat sink so that it makes stable contact with the heat source;

[0022] Observe whether the heat sink under test in the fixed slot is compatible with the fixed slot;

[0023] If so, the fan is started to conduct a thermal performance test.

[0024] The testing fixture of this invention integrates a mounting slot and a fixing slot. A heat source is located within the mounting slot, and a fan is installed on one side of the fixing slot. This allows the heat sink to be tested to be placed on top of the heat source and within the fixing slot, respectively. By testing the heat dissipation of the heat sink and its dimensional fit with the fixing slot, this testing fixture can simultaneously perform thermal performance testing and dimensional verification, saving transfer time, effectively improving testing efficiency, and reducing deformation. Furthermore, the pressing component ensures a tighter contact between the heat sink and the heat source, reducing contact thermal resistance and improving testing accuracy. Attached Figure Description

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0026] Figure 1 This is a schematic diagram of the structure of an embodiment of the test fixture of the present invention;

[0027] Figure 2 for Figure 1 A schematic diagram of the test fixture from another perspective;

[0028] Figure 3 for Figure 2 Top view of the test fixture shown;

[0029] Figure 4 for Figure 2 The front view of the test fixture shown;

[0030] Figure 5 for Figure 2 The right view of the test fixture shown;

[0031] Figure 6 for Figure 2 A schematic diagram of the structure of the pressure plate in the test fixture shown;

[0032] Figure 7 This is a flowchart of the testing method for the testing fixture of the present invention.

[0033] Explanation of icon numbers:

[0034]

[0035]

[0036] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0038] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] This invention proposes a testing fixture.

[0041] Please refer to the reference. Figure 1 and Figure 2 In one embodiment of the present invention, the test fixture 100 includes a base 10, a pressing component 30, and a fan 40. The surface of the base 10 is provided with spaced mounting grooves 10a and fixing grooves 111. A heat source 20 is installed in the mounting groove 10a, and the fixing groove 111 is used to limit and fix the heat sink.

[0042] The pressing component 30 is disposed on the base 10 and located above the mounting groove 10a to press against the radiator placed on the surface of the heat source 20; the fan 40 is disposed on the base 10 and located on one side of the fixing groove 111.

[0043] Here, the test fixture 100 is used to test whether the thermal performance and dimensions of the heat sink meet the requirements. This heat sink primarily dissipates heat from the control chip inside the game console, thus requiring good heat dissipation performance. Of course, in other embodiments, it can also be used to test the performance of heat sinks used in other electronic products. The test fixture 100 includes a base 10, which can be made of plastic or wood, etc., without limitation, only needing to provide a certain supporting foundation; heat dissipation performance is not required. The cross-sectional shape of the base 10 can be circular, square, or polygonal, etc., without limitation. One surface is used for fixing, for example, placing it in the test environment, and the other surface has a mounting groove 10a and a fixing groove 111. The mounting groove 10a is used to limit and support the heat source 20. The heat source 20 can be a copper pipe or copper block, electrically connected to the test machine, thereby generating the required heat under its power drive, thus simulating the actual usage of the heat sink in the applied game console to ensure the accuracy of the test. To prevent the heat source 20 from shaking during testing, the opening shape of the mounting groove 10a is matched to it, thereby limiting its circumferential shaking and maintaining stability.

[0044] The pressing assembly 30 includes a fixing frame 33 and a pressing member 32. The fixing frame 33 supports and fixes the pressing member 32, thereby positioning it at the upper end of the mounting groove 10a. The pressing member 32 is movably mounted on the fixing frame 33, allowing it to reciprocate up and down relative to the fixing frame 33 and the base 10. This allows it to press against the radiator placed on the upper surface of the heat source 20 during testing, achieving pressure contact. The pressing member 32 can be driven manually or by a control component. Optionally, to further ensure the stability of the pressing member 32 against the radiator and prevent it from sliding or shaking, the heat source 20 can be installed in the mounting groove 10a, with the surface of the heat source 20 recessed within it. That is, in the vertical direction, the surface of the heat source 20 is lower than the edge of the groove opening of the mounting groove 10a. This limits the radiator's circumferential position and improves its stability during pressing.

[0045] Understandably, since the fixing slot 111 is also used to limit and fix the heat sink, the opening shape of the fixing slot 111 and the mounting slot 10a is roughly the same, both having an extending length direction. Here, the arrangement of the fixing slot 111 and the mounting slot 10a is not limited; they can be set at intervals. The opening size of the fixing slot 111 is the same as the outer size of the heat sink. Thus, the size can be confirmed by placing the heat sink in the fixing slot 111 and observing the fit between the two, which is simple and convenient. The fan 40 here can be a centrifugal fan 40, which has a large air volume and low noise. Specifically, either a DC fan 40 or an AC fan 40 can be selected, depending on the situation. Driven by the fan 40, the heat from the heat source 20 is dissipated through the heat sink, thereby more realistically simulating the condition of the heat sink in actual application and improving the accuracy of its thermal performance test.

[0046] The test fixture 100 of this invention integrates a mounting slot 10a and a fixing slot 111. A heat source 20 is provided in the mounting slot 10a, and a fan 40 is provided on one side of the fixing slot 111. Thus, the heat sink to be tested can be placed on the upper end of the heat source 20 and in the fixing slot 111 respectively. By testing the heat dissipation of the heat sink and its dimensional fit with the fixing slot 111, the test fixture 100 can simultaneously perform thermal performance testing and dimensional verification, saving transfer time, effectively improving testing efficiency, and reducing deformation. Simultaneously, the pressing of the pressing component 32 ensures a tighter contact between the heat sink to be tested and the heat source 20, reducing contact thermal resistance and improving testing accuracy.

[0047] Alternatively, the mounting bracket 33 may include two side plates and a top plate connecting them. The side plates are located on opposite sides of the mounting groove 10a, and the pressing member 32 is connected to the top plate, thus positioned above the mounting groove 10a. This structure provides high structural strength and more stable support. Of course, the mounting bracket 33 can also be a support structure composed of strip or column structures.

[0048] Continue to refer to Figure 2 Optionally, the pressing assembly 30 includes a driving member 31 and a pressing member 32. The driving member 31 is mounted on the base 10, and the pressing member 32 is connected to the driving shaft of the driving member 31 and can reciprocate up and down relative to the base 10.

[0049] In this embodiment, the pressing assembly 30 also includes a driving component 31. The driving component 31 drives the pressing component 32 to automatically perform the pressing action, which is more time-saving and labor-saving compared to manual operation, further improving efficiency and accuracy. The driving component 31 can be a cylinder. Thus, the pressing component 32 is connected to the cylinder's drive shaft, and pneumatic drive causes the pressing component 32 to reciprocate with the movement of the drive shaft. This driving component 31 has a simple structure, stable driving method, is easy to maintain, and has low cost. Of course, in other embodiments, a motor or electric cylinder can also be selected.

[0050] Optionally, the pressing member 32 has a contoured surface 3221 formed on the surface facing the base 10, the contoured surface 3221 being adapted to fit the surface of the heat sink.

[0051] Understandably, given the application scenarios of heat sinks, their size is relatively small and they have a special shape. Therefore, in order to achieve more stable pressing of the heat sink, the surface of the pressing component 32 facing the base 10 is formed with a contoured surface 3221. This contoured surface 3221 is adapted to the surface of the heat sink that is away from the heat source 20 when it is placed, thereby increasing the contact area between the two, ensuring the pressure stability between them, further reducing the generation of contact resistance, and improving the detection accuracy.

[0052] Reference Figure 2 and Figure 6 Optionally, the pressing member 32 includes a fixing part 321 and a contouring part 322. The fixing part 321 is connected to the drive shaft of the drive member 31 on one side and forms a limiting groove on the other side. The contouring part 322 is installed in the limiting groove and partially protrudes from the opening of the limiting groove. The contouring part 322 forms the contouring surface 3221 away from the surface of the drive member 31.

[0053] In this embodiment, the pressing component 32 includes a fixing part 321 and a contouring part 322. The fixing part 321 serves to connect and fix the component, while the contouring part 322 is installed in the limiting groove of the fixing part 321 and has a contouring surface 3221, which adapts to the connecting pipe. The edge of the fixing part 321 abuts against the main body, forming a stable pressing relationship and improving stability. Since the radiator includes a main body and a connecting pipe connected to the main body, and the connecting pipe is partially located on the surface of the main body, when the radiator is placed on the heat source 20, its upper part is divided into a flat surface and a curved surface. The contouring surface 3221 is set as a concave curved surface to adapt to it. Of course, in other embodiments, when the surface of the radiator is other curved or inclined surfaces, the contouring surface 3221 can be adapted to fit it. Here, the contouring part 322 can be made of a different material than the fixing part 321. For example, the contouring part 322 can be made of a softer material, while the fixing part 321 can be made of a harder material, thus reducing the pressure damage to the heat sink while ensuring strength. Of course, the two can also be integrally molded by secondary injection molding to ensure connection strength.

[0054] Please combine Figure 2 , Figure 4 and Figure 5 Optionally, the test fixture 100 further includes an elastic element 50, one end of which abuts against the bottom wall of the mounting groove 10a, and the other end of which abuts against the heat source 20.

[0055] In this embodiment, in order to further facilitate the adjustment of the pressing force of the pressing member 32 on the heat sink, an elastic member 50 is also provided at the bottom of the heat source 20. The two ends of the elastic member 50 are respectively connected to the bottom of the mounting groove 10a and the heat source 20. When the pressing member 32 presses the heat sink against the heat source 20, the elastic member 50 will deform, which can be used to adjust the pressing force on the surface of the heat sink and avoid excessive pressing force causing deformation of the heat sink.

[0056] Specifically, the elastic element 50 can be a spring, a spring tube, or other elastic structure. To improve the performance of the elastic element 50, when the elastic element 50 is a spring, a guide member can be provided in its middle to provide guidance for the vertical movement of the spring and prevent it from tilting. Of course, there can be multiple elastic elements 50 to further improve the support stability.

[0057] Optionally, the driving component 31 is a cylinder and is electrically connected to the testing machine, which has a display unit that shows the pressing force.

[0058] In this embodiment, the testing machine is a testing device used to test the heat sink fixed on the testing fixture 100. With or without the elastic member 50, in order to adjust the pressing force of the driving member 31, the driving member 31 is set as a cylinder and electrically connected to the testing machine. The testing machine controls and displays the pressing force of the cylinder. In this way, the pressing force can be changed by adjusting the driving air pressure of the cylinder. While ensuring that the relative position of the pressing on the heat sink is accurate, the heat sink and the heat source 20 are fully in contact, and the pressing loss on the heat sink can be reduced.

[0059] Please combine Figure 3 Optionally, the radiator includes a main body and a connecting pipe connected to one side of the main body. The opening shape of the fixing groove 111 matches the shape of the main body, and the opening size of the fixing groove 111 is adapted to the size of the main body. A buckle groove 112 is provided on the surface of the base 10. The buckle groove 112 is located at the edge of the opening of the fixing groove 111 and communicates with the fixing groove 111. The heat source 20 is connected to the other end of the connecting pipe.

[0060] Based on the structure of the radiator described above, when placing it in the fixing slot 111, the connecting pipe should face the bottom wall of the fixing slot 111. This ensures that the opening shape of the fixing slot 111 matches the main body, and the bottom wall of the fixing slot 111 forms an arc-shaped groove that matches the connecting pipe, thus confirming the overall structural dimensions. When the main body is fully engaged in the fixing slot 111, it can be confirmed that the radiator's dimensions are correct. If the main body cannot be placed in the fixing slot 111 or there is a significant gap between it and the slot wall, it indicates that the radiator's welding dimensions do not meet the standards. Furthermore, to facilitate testing, a retaining groove 112 is provided around the periphery of the fixing slot 111. This retaining groove 112 communicates with the fixing slot 111, allowing for easy placement and removal of the radiator from the fixing slot 111, improving convenience. Multiple retaining grooves 112 can be provided and spaced apart along the opening edge of the fixing slot 111.

[0061] In addition, one end of the connecting pipe is connected to the main body, and the other end extends to connect to the heat source 20, so that the heat from the heat source 20 is transferred to the main body through the connecting pipe under the drive of the airflow, and then dissipated.

[0062] Please combine Figure 3 Optionally, the surface of the base 10 is further provided with a pipe groove 113, which extends in a curved shape and is used to limit and fix the connecting pipe.

[0063] To further ensure the accuracy of the thermal performance test, a groove 113 is provided on the base 10. This groove 113 extends from the heat source 20 to the fixing groove 111, thereby limiting and fixing the connecting pipe to ensure its stability and contact stability with the heat source 20. When confirming the size of the connecting pipe, if the temperature at the heat source 20 rises sharply, it indicates that the end of the connecting pipe may not be tightly or securely pressed against the end of the heat source 20, resulting in heat dissipation failure, which means that the radiator's size is unqualified.

[0064] Optionally, for a compact structure, the extending directions of the fixing groove 111 and the mounting groove 10a are set at an angle, i.e., not parallel. This allows the arrangement of the fan 40 and the fixing groove 111 to be approximately parallel to the extending direction of the mounting groove 10a, which is beneficial for airflow and heat dissipation. Furthermore, to reduce damage from bending of the connecting pipe, the pipe groove 113 is designed to extend in a curved shape, ensuring that all bends in the connecting pipe are arc-shaped, avoiding right-angle bends and improving the maintenance of the radiator.

[0065] Please refer to Figure 2 and Figure 3 Optionally, the test fixture 100 further includes a fan cover 60, which forms a heat dissipation duct 60a. One end of the heat dissipation duct 60a opens toward the fan 40, and the other end opens toward the fixing groove 111.

[0066] And / or, the base 10 includes a first base plate 11 and a second base plate 12 arranged at intervals, and a support member 13 connecting the first base plate 11 and the second base plate 12. The first base plate 11 has a mounting hole and the fixing groove 111. The hole wall of the mounting hole and the second base plate 12 enclose each other to form the mounting groove 10a.

[0067] In this embodiment, a fan shroud 60 is also provided between the fan 40 and the fixing slot 111. The fan shroud 60 forms a heat dissipation air duct 60a. The two ends of the heat dissipation air duct 60a are respectively provided corresponding to the fan 40 and the fixing slot 111, thereby ensuring that the airflow driven by the fan 40 can be accurately used for the corresponding position of the radiator, reducing air volume loss and ensuring full utilization of the fan 40. Here, the fan shroud 60 includes a side baffle and a top baffle, which together with the base 10 form the heat dissipation air duct 60a, thereby simplifying the structure. In order to better utilize the radiator, one end opening of the fan shroud 60 is approximately matched with the length and height of the radiator, so that the fixing slot 111 can be directly set at the opening and fitted snugly. The passing hot airflow can fully contact the radiator, improving the heat dissipation effect. The side baffle corresponding to the fan 40 has an opening that matches the air inlet of the fan 40, thereby further reducing air volume loss.

[0068] Optionally, the base 10 includes a first base plate 11 and a second base plate 12, and four support members 13 supporting both. These support members 13 are arranged in a one-to-one correspondence with the four corners of the first base plate 11 and the second base plate 12 to improve connection stability. Thus, a mounting hole is provided on the first base plate 11, allowing the heating source to be placed within the mounting hole. One end of the elastic member 50 abuts against the second base plate 12, and the other end abuts against the supporting heating source, so that the first base plate 11 and the second base plate 12 together form a mounting groove 10a. This reduces the weight of the base 10, making the fixture lighter and easier to move. Of course, in other embodiments, the base 10 can also be a block shape, with the mounting groove 10a directly formed by excavation.

[0069] Please refer to Figure 7 The present invention also proposes a testing method for the testing fixture 100, wherein the testing fixture 100 is any of the testing fixtures 100 described in the above embodiments, and will not be described in detail here. The testing method for the testing fixture 100 includes the following steps:

[0070] Step S1: Place the test fixture 100 in the heating channel of the test machine;

[0071] Step S2: Fix the heat sink to be tested in the mounting slot 10a and fixing slot 111 of the base 10 respectively, and connect it to the test electromechanical device;

[0072] Step S3: Drive the pressing component 30 down to the heat sink so that it makes stable contact with the heat source 20;

[0073] Step S4: Observe whether the heat sink to be tested in the fixing slot 111 is compatible with the fixing slot 111;

[0074] Step S5: If so, start the fan 40 to perform a thermal performance test.

[0075] In steps S1 and S2, the test fixture 100 is transferred to the heating channel of the testing machine. This heating channel serves as the testing environment for the test fixture 100. Simultaneously, the testing machine provides power to the drive component 31, the fan 40, and the heat source 20. The heat sink under test is then fixed in the fixing slot 111 and the mounting slot 10a. Through electrical connection with the testing machine, the thermal performance of the heat sink under simulated operating conditions can be measured. In step S3, after fixing, the drive component 31 drives the pressing component 32 to press down against the heat sink, ensuring stable contact with the heat source 20 without significant shaking, thus reducing contact thermal resistance. At this point, in step S4, the matching degree between the fixing slot 111 and the heat sink under test can be observed to confirm whether its dimensions are compatible. Of course, if the heat sink under test is too large, its dimensions will be deemed unacceptable when fixing it to the fixing slot 111. Next comes S5. Once the dimensions of the heatsink under test are confirmed, thermal performance testing can be performed in airflow mode, and the testing machine will provide the final thermal performance results. Of course, if the dimensions are not up to standard, the latter test will not be performed.

[0076] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A testing fixture for testing the performance of a heat sink, characterized in that, The test fixture includes: The base has spaced mounting grooves and fixing grooves on its surface. A heat source is installed in the mounting groove, and the fixing groove is used to limit and fix the heat sink. A pressing assembly, disposed on the base and located above the mounting groove, to press against a heat sink placed on the surface of the heat source; and A fan, which is mounted on the base and located on one side of the fixing groove; The radiator includes a main body and a connecting pipe connected to one side of the main body. The opening shape of the fixing groove matches the shape of the main body, and the opening size of the fixing groove is adapted to the size of the main body. One end of the connecting pipe is connected to the main body, and the other end extends to connect to the heat source. Driven by airflow, the heat from the heat source is transferred to the main body through the connecting pipe for heat dissipation.

2. The test fixture as described in claim 1, characterized in that, The pressing assembly includes a driving component and a pressing component. The driving component is mounted on the base, and the pressing component is connected to the driving shaft of the driving component and can reciprocate up and down relative to the base.

3. The test fixture as described in claim 2, characterized in that, The surface of the pressing member facing the base has a contoured surface, which is adapted to fit the surface of the heat sink.

4. The test fixture as described in claim 3, characterized in that, The pressing component includes a fixing part and a contouring part. One side of the fixing part is connected to the drive shaft of the drive component, and the other side forms a limiting groove. The contouring part is installed in the limiting groove and partially protrudes from the opening of the limiting groove. The contouring part forms the contouring surface away from the surface of the drive component.

5. The test fixture as described in any one of claims 1 to 4, characterized in that, The test fixture also includes an elastic element, one end of which abuts against the bottom wall of the mounting groove, and the other end of which abuts against the heat source.

6. The test fixture as described in any one of claims 2 to 4, characterized in that, The driving component is a cylinder, which is electrically connected to the testing machine, which has a display unit that shows the pressing force.

7. The test fixture as described in any one of claims 1 to 4, characterized in that, The base has a buckle groove on its surface, which is located at the edge of the opening of the fixing groove and is connected to the fixing groove.

8. The test fixture as described in claim 7, characterized in that, The surface of the base is also provided with a groove, which extends in a curved shape and is used to limit and fix the connecting pipe.

9. The test fixture as described in claim 1, characterized in that, The test fixture also includes a fan cover, which forms a heat dissipation channel. One end of the heat dissipation channel opens towards the fan, and the other end opens towards the fixing groove. And / or, the base includes a first base plate and a second base plate spaced apart from each other, and a support member connecting the first base plate and the second base plate. The first base plate has a mounting hole and the fixing groove, and the hole wall of the mounting hole and the second base plate enclose the mounting groove to form the mounting groove.

10. A testing method for the testing fixture as described in any one of claims 1 to 9, characterized in that, The heat sink to be tested includes a main body and a connecting pipe connected to one side of the main body. The testing method of the test fixture includes the following steps: The testing device is placed in the heating channel of the testing machine; The connecting pipe and the main body of the heat sink to be tested are located in the mounting groove and fixing groove of the base, respectively, and are connected to the test electromechanical device. The pressing component is driven to press down onto the connecting pipe of the heat sink under test so that it makes stable contact with the heat source; Observe whether the main body of the heat sink to be tested in the fixing slot is compatible with the fixing slot; If so, the fan is started to conduct a thermal performance test.

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