Vibration testing device for heat-conducting interface material

Abstract

The utility model discloses a heat-conducting interface material vibration testing device, which belongs to the technical field of heat-conducting interface material vibration testing and comprises a shell, a motor is mounted on the rear side of the shell, a gear I is fixed on an output shaft of the motor, rotating shafts are symmetrically and rotatably mounted in the shell, gears II are fixed on the outer sides of the rotating shafts, and the gears II are fixed on the outer sides of the rotating shafts. A chain is arranged between the second gear and the first gear. Through cooperative use of the shell, the motor, the first gear, the rotating shaft, the second gear, the chain, the cams, the fixing rods, the sleeves, the springs, the connecting rods, the movable plate, the supporting rods and the fixing pieces, the four corners of the movable plate can be intermittently lifted up through the cams evenly arranged at the two ends, and the purpose that the movable plate swings up and down more stably is achieved; and meanwhile, four points at the bottom of the movable plate support each supporting point to share the weight more uniformly, so that the purpose of reducing the loss is achieved, and the practicability of the vibration testing device for the heat-conducting interface material is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration testing of thermal conductive interface materials, in particular to a vibration testing device for thermal conductive interface materials. Background Art

[0002] With the development of new technologies, new products with "high heat flux density, high power, high stability, thermal response, and ultra-thin" have put forward higher requirements for thermal interface materials. Thermal interface materials can solve the heat dissipation problem of electronic equipment. They are used between the contact interface of the heat source and the radiator. By using thermal interface materials with a thermal conductivity much higher than that of air, the heat dissipation efficiency of electronic components can be improved. With the iteration and update of electronic devices, 5G communications, new energy and optoelectronic modules, the increasingly harsh application environment has put forward higher requirements for thermal interface materials. On the basis of high thermal conductivity, they must also have excellent reliability. Among them, vibration resistance is an important parameter to measure the quality of thermal interface materials. Electronic devices, 5G base stations, new energy vehicles and optoelectronic modules will have multi-directional, multi-frequency and multi-amplitude vibrations during production, assembly, transportation and use. Consumer electronics also involve instantaneous vibrations such as drop impact in daily use; bonding heat dissipation methods require thermal interface materials to have good bonding properties because the radiator cannot be fixed or completely fixed using a mechanical structure, which further improves the requirements for the vibration resistance of thermal interface materials. Thermal interface materials are filled between heating elements and heat sinks. Once the thermal interface materials are cracked, expanded, displaced or completely fall off under vibration conditions, it will lead to a sharp drop in heat dissipation performance and loose components. At the same time, the slipping thermal interface materials will pollute electronic components and even damage the functions of electronic components, leading to irreversible damage. Vibration testing of thermal interface materials is crucial to ensure their long-term service reliability.

[0003] For example, the utility model with application number 202122454870.4 discloses a vibration testing device for thermal interface materials. By setting movement in three directions, namely, reciprocating motion in the direction of the guide rod, reciprocating motion in the first direction, and reciprocating motion in the second direction, the three movement directions are perpendicular to each other. When the three movement directions move at the same time, the vibration scenarios during the transportation and use of the thermal interface materials are simulated to the maximum extent. Therefore, the seismic resistance of the thermal interface material can be tested through experiments, and the deficiencies of the thermal interface material can be found out according to the test results. Then, the thermal interface material can be optimized and designed to improve the equipment stability of the thermal interface material during transportation and the stability of its performance during application.

[0004] Similar to the above application, there are still some shortcomings:

[0005] This type of thermal interface material vibration test device can achieve the purpose of diversified vibration directions in multiple directions, but the motion mechanism it uses is not very stable. Although it can achieve the purpose of multi-directional vibration, it wears out parts very much, especially the connecting rod part at the bottom, which is easy to cause damage and other problems, increasing maintenance costs and maintenance time, and reducing the overall protection effect.

[0006] Therefore, a thermal interface material vibration testing device is designed to optimize the above problems. Utility Model Content

[0007] The main purpose of the utility model is to provide a thermal interface material vibration testing device to solve the related technical problems raised in the above background technology.

[0008] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0009] A thermal interface material vibration testing device comprises a shell, a motor is installed on the rear side of the shell, a gear 1 is fixed to the output shaft of the motor, a rotating shaft is symmetrically installed inside the shell for rotation, a gear 2 is fixed to the outer side of the rotating shaft, a chain is arranged between the gear 2 and the gear 1, a cam is symmetrically installed on the outer side of the rotating shaft, a fixing rod is symmetrically arranged inside the shell, a sleeve is slidably installed on the outer side of the fixing rod, a spring is fixed to the top and the bottom of the sleeve, a connecting rod is fixed to one side of the sleeve, a movable plate is installed at the bottom of the connecting rod, support rods are symmetrically installed on the top of the movable plate, and fixing parts are hinged between the support rods.

[0010] Preferably: a fixing opening is provided on the top of the shell, and limit plates are symmetrically arranged on the inner side walls of the shell, and protective plates are slidably connected to the tops of the limit plates, and support plates are symmetrically installed on the top of the shell, and screws are threadedly connected to the support plates, and clamps are rotatably installed on the bottoms of the screws, and mounting plates are fixed at both ends of the fixing rod, and bolts are arranged on the mounting plates.

[0011] Preferably, side plates are fixed at both ends of the movable plate, rollers are installed on the side of the side plates away from the movable plate, and the rollers are slidably connected to the inner side wall of the shell.

[0012] Preferably, buffer blocks are fixed at the four corners of the bottom of the shell, and a buffer sleeve is provided on the outer sliding sleeve of the buffer block.

[0013] Preferably, a handle is provided on the top of each of the protective plates, and a protective grip ring is provided on the outer side of each of the handles.

[0014] Preferably, an anti-skid pad is fixed on the top of the limiting plate, and the anti-skid pad is a rubber anti-skid pad.

[0015] The beneficial effects of the utility model are:

[0016] The utility model provides a thermal interface material vibration test device, which can intermittently lift the four corners of the movable plate through the coordinated use of a housing, a motor, a gear one, a rotating shaft, a gear two, a chain, a cam, a fixing rod, a sleeve, a spring, a connecting rod, a movable plate, a supporting rod and a fixing piece through the cams evenly arranged at both ends, so as to achieve the purpose of more stable up and down shaking of the movable plate. At the same time, the bottom of the movable plate is supported by four points, and the weight of each supporting point is more evenly shared and the loss is reduced, thereby improving the practicality of the thermal interface material vibration test device;

[0017] Through the coordinated use of the fixing port, the protective plate, the limit plate, the support plate, the screw rod, the clamping plate, the mounting plate and the bolt, the screw rod is turned upwards to separate the bottom of the clamping plate from the top of the protective plate, and the protective plate can be pulled outwards, and then the bolts on the mounting plate can be loosened from the fixing port to remove the fixing rod and the movable plate from the inside of the shell, thereby facilitating the maintenance of the internal components of the shell and improving the convenience of the thermal interface material vibration test device;

[0018] Through the coordinated use of side panels and rollers, the movable plate swings up and down, driving the side panels and rollers on both sides to swing up and down at the same time. The rollers fit against the inner wall of the outer shell, and generate rolling friction with the outer shell when moving up and down, which not only improves the stability of the movable plate's up and down movement, but also reduces the damage problem caused by direct friction. At the same time, it can also reduce the noise caused by shaking, meeting people's more usage needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front cross-sectional view of the utility model;

[0020] Figure 2 For the utility model Figure 1 A magnified view of the structure at center;

[0021] Figure 3 It is a side view of the utility model.

[0022] In the figure: 1. housing; 2. motor; 3. gear 1; 4. shaft; 5. gear 2; 6. chain; 7. cam; 8. fixing rod; 9. sleeve; 10. spring; 11. connecting rod; 12. movable plate; 13. support rod; 14. fixing piece; 15. fixing port; 16. protective plate; 17. limit plate; 18. support plate; 19. screw; 20. clamping plate; 21. mounting plate; 22. bolt; 23. side plate; 24. roller. DETAILED DESCRIPTION

[0023] In order to make the technical solution of the utility model more clear and specific to those skilled in the art, the utility model is further described in detail below in conjunction with embodiments and drawings, but the implementation methods of the utility model are not limited thereto.

[0024] Embodiment 1

[0025] like Figure 1-Figure 3 As shown, this embodiment provides a thermal interface material vibration test device, including a housing 1, a motor 2 is installed on the rear side of the housing 1, a gear 1 3 is fixed to the output shaft of the motor 2, a rotating shaft 4 is symmetrically installed inside the housing 1, a gear 2 5 is fixed to the outer side of the rotating shaft 4, a chain 6 is arranged between the gear 2 5 and the gear 1 3, a cam 7 is symmetrically installed on the outer side of the rotating shaft 4, a fixing rod 8 is symmetrically arranged inside the housing 1, a sleeve 9 is slidably installed on the outer side of the fixing rod 8, a spring 10 is fixed to the top and bottom of the sleeve 9, and a connecting rod 1 is fixed to one side of the sleeve 9. 1, a movable plate 12 is installed at the bottom of the connecting rod 11, a support rod 13 is symmetrically installed on the top of the movable plate 12, a fixing piece 14 is hinged between the support rods 13, a fixing port 15 is opened on the top of the shell 1, and the inner side walls of the shell 1 are symmetrically provided with limit plates 17, and the tops of the limit plates 17 are slidably connected with protective plates 16, and support plates 18 are symmetrically installed on the top of the shell 1, and screws 19 are threadedly connected on the support plates 18, and clamping plates 20 are rotatably installed on the bottoms of the screws 19, and mounting plates 21 are fixed at both ends of the fixing rod 8, and bolts 22 are provided on the mounting plates 21.

[0026] The starting motor 2 drives the gear 1 3 to rotate and drives the gear 2 5 to rotate through the chain 6, which then causes the cam 7 to rotate and intermittently push the movable plate 12, the support rod 13 and the fixing part 14 upward to move upward. Under the elastic force of the spring 10, the fixing part 14 shakes up and down to achieve the purpose of vibration, and the screw rod 19 is rotated upward to separate the bottom of the splint 20 from the top of the protective plate 16, and the protective plate 16 can be pulled outward, and then the interior is entered from the fixing port 15 to loosen the bolts 22 on the mounting plate 21, and the fixing rod 8 and the movable plate 12 can be removed from the inside of the outer shell 1, thereby facilitating the maintenance of the internal components of the outer shell 1.

[0027] Embodiment 2

[0028] In this embodiment, if Figure 1-Figure 3 As shown, side plates 23 are fixed to both ends of the movable plate 12 , and rollers 24 are installed on the side of the side plates 23 away from the movable plate 12 , and the rollers 24 are slidably connected to the inner side wall of the housing 1 .

[0029] When the movable plate 12 swings up and down, the side plates 23 and the rollers 24 on both sides swing up and down. The rollers 24 fit the inner wall of the shell 1 and generate rolling friction with the shell 1 when moving up and down, which not only improves the stability of the movable plate 12 moving up and down, but also reduces the damage problem caused by direct friction.

[0030] In this embodiment, buffer blocks are fixed at the four corners of the bottom of the housing 1, and a buffer sleeve is provided on the outer sliding sleeve of the buffer block.

[0031] The buffer block and the buffer sleeve can weaken some vibrations during the shaking of the housing 1, thereby improving the overall stability and shock absorption effect.

[0032] In this embodiment, a handle is disposed on the top of each protection plate 16, and a protective grip ring is disposed on the outer side of each handle.

[0033] The provision of the handle and the protective grip ring facilitates the opening and closing operations of the protective plate 16, making it more convenient to use.

[0034] In this embodiment, an anti-skid pad is fixed on the top of the limiting plate 17, and the anti-skid pad is a rubber anti-skid pad.

[0035] The anti-skid rubber pad increases the friction force on the bottom of the protective plate 16, thereby improving the anti-skid effect after installation.

[0036] The above is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present invention according to the technical solution and concept of the present invention, which fall within the protection scope of the present invention.

Claims

1. A thermal interface material vibration test device, characterized in that: The invention comprises a housing (1), a motor (2) being mounted on the rear side of the housing (1), a gear 1 (3) being fixed to the output shaft of the motor (2), a rotating shaft (4) being symmetrically mounted inside the housing (1), a gear 2 (5) being fixed to the outer side of the rotating shaft (4), a chain (6) being arranged between the gear 2 (5) and the gear 1 (3), a cam (7) being symmetrically mounted on the outer side of the rotating shaft (4), a fixing rod (8) being symmetrically arranged inside the housing (1), a sleeve (9) being slidably mounted on the outer side of the fixing rod (8), a spring (10) being fixed to the top and the bottom of the sleeve (9), a connecting rod (11) being fixed to one side of the sleeve (9), a movable plate (12) being mounted to the bottom of the connecting rod (11), a supporting rod (13) being symmetrically mounted to the top of the movable plate (12), and a fixing member (14) being hinged between the supporting rods (13).

2. A thermal interface material vibration testing device according to claim 1, characterized in that: The top of the shell (1) is provided with a fixing opening (15), the inner side walls of the shell (1) are symmetrically provided with limit plates (17), the tops of the limit plates (17) are slidably connected with protective plates (16), the top of the shell (1) is symmetrically provided with support plates (18), the support plates (18) are threadedly connected with screw rods (19), the bottoms of the screw rods (19) are rotatably provided with clamping plates (20), both ends of the fixing rod (8) are fixed with mounting plates (21), and the mounting plates (21) are provided with bolts (22).

3. A thermal interface material vibration testing device according to claim 1, characterized in that: Side plates (23) are fixed to both ends of the movable plate (12), and rollers (24) are installed on the side of the side plates (23) away from the movable plate (12), and the rollers (24) are slidably connected to the inner side wall of the outer shell (1).

4. A thermal interface material vibration testing device according to claim 1, characterized in that: Buffer blocks are fixed at the four corners of the bottom of the housing (1), and a buffer sleeve is provided on the outer sliding sleeve of the buffer block.

5. A thermal interface material vibration testing device according to claim 2, characterized in that: The top of each of the protective plates (16) is provided with a handle, and the outer side of each of the handles is provided with a protective grip ring.

6. A thermal interface material vibration testing device according to claim 2, characterized in that: An anti-skid pad is fixed on the top of the limiting plate (17), and the anti-skid pad is a rubber anti-skid pad.

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