Device for detecting heat-conducting property of LED (light-emitting diode) aluminum substrate

Abstract

The invention discloses a device for detecting the heat-conducting property of an LED aluminum substrate. The device comprises a detection box, a heating test assembly and a fixing assembly, the heating test assembly is used for generating heat and detecting the heat-conducting property of the aluminum substrate; the fixing assembly comprises a fixing frame, a pressing rod and a telescopic piece, the fixing frame is fixedly installed in the detection box, one end of the telescopic piece is fixedly connected with the fixing frame, the other end of the telescopic piece is fixedly connected with the pressing rod, and the telescopic piece generates downward pressure on the aluminum substrate when the heating test assembly heats so as to position the aluminum substrate. The fixing assembly is arranged, the fixing assembly comprises the fixing frame, the pressing rod and the telescopic part, the telescopic part generates a downward pressure on the aluminum substrate when the heating test assembly heats so as to position the aluminum substrate, and the downward pressure on the aluminum substrate by the telescopic part disappears after the heating test assembly finishes heating, so that the aluminum substrate is positioned. Therefore, the disassembly and assembly efficiency of the aluminum substrate is effectively improved, and the detection efficiency is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and in particular to a device for detecting the thermal conductivity of an LED aluminum substrate. Background Art

[0002] The advent of LED aluminum substrate products has opened up the development of the heat dissipation application industry. Due to the heat dissipation characteristics of LED aluminum substrates, the aluminum substrates have the advantages of high heat dissipation, low thermal resistance, long life, and voltage resistance.

[0003] However, when testing the thermal conductivity of an existing aluminum substrate in a heating mode, the aluminum substrate is fixed by a clamp, and both fixing and disassembling the clamp are troublesome, resulting in low test efficiency. Summary of the Invention

[0004] The problem to be solved by the present invention is: to provide a device for detecting the thermal conductivity of an LED aluminum substrate, by setting a fixing component, the fixing component including a fixing frame, a pressure rod and a retractable part. When the heating test component is heated, the retractable part generates a downward pressure on the aluminum substrate, thereby positioning the aluminum substrate, and the downward pressure of the retractable part on the aluminum substrate will disappear after the heating test component completes heating, thereby effectively improving the disassembly and assembly efficiency of the aluminum substrate, and thus improving the detection efficiency.

[0005] The present invention provides a technical solution to solve the above problems: a device for detecting the thermal conductivity of an LED aluminum substrate, comprising a detection box, a heating test component and a fixing component, wherein the heating test component and the fixing component are both installed inside the detection box; The heating test component is used to generate heat and test the thermal conductivity of the aluminum substrate; The fixing assembly includes a fixing frame, a pressure rod and a retractable part. The fixing frame is fixedly installed inside the detection box. One end of the retractable part is fixedly connected to the fixing frame, and the other end is fixedly connected to the pressure rod. When the heating test assembly is heated, the retractable part generates a downward pressure on the aluminum substrate to position the aluminum substrate.

[0006] Preferably, the retractable part includes a retractable ring, a movable rod and a fixed rod. The upper end of the fixed rod is fixedly connected to the fixed frame. An axial movable hole is provided on the fixed rod. One end of the movable rod cooperates with the movable hole. The retractable ring is sleeved on the movable rod and one end abuts against the lower end of the fixed rod, and the other end abuts against the limiting step on the movable rod. The retractable ring is made of titanium alloy memory material.

[0007] Preferably, the retractable member further comprises a spring 1, which is installed in the movable hole, with one end of the spring 1 fixedly connected to the upper end of the movable rod, and the other end of the spring 1 fixedly connected to the bottom of the movable hole.

[0008] Preferably, the heating test assembly includes a heating platform and a temperature sensor, wherein the heating platform is used to place the aluminum substrate to be tested and generate heat, and the temperature sensor is used to sense the temperature emitted by the aluminum substrate to be tested.

[0009] Preferably, the heating test assembly also includes a number of supporting mechanisms, which include a supporting seat and spring 2. The lower end of the supporting seat is fixedly connected to the bottom surface inside the detection box. A vertical mounting hole is provided on the supporting seat. One end of the spring 2 is fixedly connected to the bottom of the mounting hole, and the other end is fixedly connected to the lower end surface of the heating platform.

[0010] Preferably, the detection box includes a box body and a box cover, and the box cover can be snap-fitted and installed on the upper end of the box body.

[0011] Preferably, in the detection box, the positioning assembly includes a transmission mechanism and a positioning rod, one end of the transmission mechanism is transmission-connected to the heating table, and the other end is transmission-connected to the positioning rod, a positioning hole for installing the positioning rod is provided on the side wall of the box body, and a card slot is provided on the box cover, and the positioning rod can extend from the positioning hole and engage with the card slot.

[0012] Preferably, the positioning assembly further includes a spring three, one end of which is fixedly connected to the bottom of the positioning hole, and the other end of which is fixedly connected to the positioning rod.

[0013] Preferably, the transmission mechanism includes a transmission rod, a transmission gear 1, a transmission gear 2 and a transmission gear 3. A guide groove is provided on the groove wall of the box body, and guide blocks cooperating with the guide groove are provided on both sides of the heating platform. A plurality of transmission teeth 1 are provided on the guide blocks. The transmission gear 1 is rotatably mounted in the groove wall of the box body, and the transmission rod is movably mounted in the side wall of the box body. One end of the transmission rod is provided with a plurality of transmission teeth 2 engaged with the transmission gear 1, and the other end is provided with a plurality of transmission teeth 3. The transmission gear 2 and the transmission gear 3 are coaxially rotatable mounted in the side wall of the box body through a rotating shaft. The transmission gear 2 is engaged with the transmission gear 3 for transmission, and the transmission gear 3 is engaged with the transmission gear 4 provided on the positioning rod for transmission.

[0014] Compared with the prior art, the advantages of the present invention are: the present invention sets a fixing component, which includes a fixing frame, a pressure rod and a retractable part. The retractable part generates a downward pressure on the aluminum substrate when the heating test component is heated, thereby positioning the aluminum substrate, and the downward pressure of the retractable part on the aluminum substrate will disappear after the heating test component completes heating, thereby effectively improving the disassembly and assembly efficiency of the aluminum substrate, and thus improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a front cross-sectional view of the present invention; Figure 3 It is a left side sectional view of the present invention; Figure 4 yes Figure 2 A magnified schematic diagram of point A in the middle; Figure 5 yes Figure 3 A magnified schematic diagram of point B in the middle; Figure 6 yes Figure 3 Enlarged schematic diagram of point C in the middle; Figure 7 This is a partial structural cross-section of the transmission structure of the present invention Figure 1 ; Figure 8 This is a partial structural cross-section of the transmission structure of the present invention Figure 2 ; Figure 9 is a top view of the connecting plate and the shifting lever of the present invention; Figure 10 It is a schematic diagram of the cooperation between the rotating shaft, the limiting ring and the transmission gear three of the present invention.

[0017] : The accompanying drawings are marked with: 1. Box cover, 2. Box body, 3. Movable slot, 4. Push rod, 5. Temperature sensor, 6. Positioning rod, 7. Heating platform, 8. Spring 2, 9. Bearing seat, 10. Guide slot, 11. Engaging tooth 1, 12. Fixed frame, 13. Transmission rod, 14. Fixed rod, 15. Movable hole, 16. Movable rod, 17. Limiting slot, 18. Press rod, 19. Retractable ring, 20. Guide block, 21. Transmission tooth 1, 22. Transmission gear 1, 23. Transmission gear 2, 24. Slot, 25. Transmission gear 3, 26. Rotating shaft, 27. Transmission gear 2, 28. Positioning hole, 29. Transmission tooth 3, 30. Transmission gear 4, 31. Spring 3, 32. Movable cavity, 33. Magnetic ring 2, 34. Connecting plate, 35. Magnetic ring 1, 36. Snap ring, 37. Limiting ring, 38. Spring 1. DETAILED DESCRIPTION

[0018] The following will describe the embodiments of the present invention in detail with reference to the accompanying drawings and examples, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0019] In the description of the present invention, it should be noted that, for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, indicating directions and positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present invention.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Therefore, the terms "first" and "second" may explicitly or implicitly refer to one or more of these features. Throughout the description of the present invention, "several" means two or more, unless otherwise specifically defined.

[0021] In the present invention, unless otherwise specified or limited, the terms "assemble," "connect," and "connect" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integral connection; mechanical connection; direct connection, connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0022] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0023] It should also be understood that the terms used in this description of the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present invention. As used in the description of the embodiments of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0024] As shown in the accompanying drawings, a specific embodiment of the present invention is a device for detecting the thermal conductivity of an LED aluminum substrate, comprising a detection box, a heating test component and a fixing component, wherein the heating test component and the fixing component are both installed inside the detection box; The heating test component is used to generate heat and test the thermal conductivity of the aluminum substrate; The fixing assembly includes a fixing frame 12, a pressure rod 18 and a retractable part. The fixing frame 12 is fixedly installed inside the detection box. One end of the retractable part is fixedly connected to the fixing frame 12, and the other end is fixedly connected to the pressure rod 18. When the heating test assembly is heated, the retractable part generates a downward pressure on the aluminum substrate to position the aluminum substrate.

[0025] In the above scheme, by setting a fixing component, the fixing component includes a fixing frame, a pressure rod and a retractable component. When the heating test component is heated, the retractable component generates a downward pressure on the aluminum substrate to position the aluminum substrate. Moreover, after the heating test component is heated, the downward pressure on the aluminum substrate by the retractable component will disappear, thereby effectively improving the disassembly and assembly efficiency of the aluminum substrate, thereby improving the detection efficiency. Among them, the retractable part includes a retractable ring 19, a movable rod 16 and a fixed rod 14, the upper end of the fixed rod 14 is fixedly connected to the fixed frame 12, and an axial movable hole 15 is provided on the fixed rod 14, one end of the movable rod 16 cooperates with the movable hole 15, the retractable ring 19 is sleeved on the movable rod 16 and one end abuts against the lower end of the fixed rod 14, and the other end abuts against the limiting step on the movable rod 16, and the retractable ring 19 is made of titanium alloy memory material; further, the retractable part also includes a spring 38, and the spring 38 is installed in the movable hole 15, one end of the spring 38 is fixedly connected to the upper end of the movable rod 16, and the other end is fixedly connected to the bottom of the movable hole 15.

[0026] As another embodiment of the present invention, the heating test assembly includes a heating table 7 and a temperature sensor 5, the heating table 7 is used to place the aluminum substrate to be tested and generate heat, and the temperature sensor 5 is used to sense the temperature emitted by the aluminum substrate to be tested; and the heating test assembly also includes a number of supporting mechanisms, the supporting mechanisms include a supporting seat 9 and a spring 2 8, the lower end of the supporting seat 9 is fixedly connected to the bottom surface inside the detection box, and a vertical mounting hole is provided on the supporting seat 9, one end of the spring 2 8 is fixedly connected to the bottom of the mounting hole, and the other end is fixedly connected to the lower end surface of the heating table 7.

[0027] The test box includes a box body 2 and a box cover 1, and the box cover 1 can be snap-fitted onto the upper end of the box body 2. Specifically, a positioning assembly for positioning the box cover 1 is further provided inside the test box; more specifically, the positioning assembly includes a transmission mechanism and a positioning rod 6. One end of the transmission mechanism is in transmission connection with the heating table 7, and the other end is in transmission connection with the positioning rod 6. A positioning hole 28 for mounting the positioning rod 6 is provided on the side wall of the box body 2, and a slot 24 is provided on the box cover 1. The positioning rod 6 can extend from the positioning hole 28 and engage with the slot 24.

[0028] In this embodiment, the positioning assembly further includes a spring three 31, one end of the spring three 31 is fixedly connected to the bottom of the positioning hole 28, and the other end is fixedly connected to the positioning rod 6; the transmission mechanism includes a transmission rod 13, a transmission gear one 22, a transmission gear two 27 and a transmission gear three 25, a guide groove 10 is provided on the groove wall of the box body 2, and guide blocks 20 that cooperate with the guide groove 10 are provided on both sides of the heating platform 7, a plurality of transmission teeth 21 are provided on the guide block 20, and the transmission gear one 22 is provided with a plurality of transmission teeth 21. It can be rotatably mounted in the groove wall of the box body 2, and the transmission rod 13 can be movably mounted in the side wall of the box body 2. One end of the transmission rod 13 is provided with a plurality of transmission teeth 23 engaged with the transmission gear 1 22, and the other end is provided with a plurality of transmission teeth 3 29. The transmission gear 2 27 and the transmission gear 3 25 are coaxially rotatably mounted in the side wall of the box body 2 through the rotating shaft 26. The transmission gear 2 27 is engaged with the transmission gear 3 29 for transmission, and the transmission gear 3 25 is engaged with the transmission gear 4 30 provided on the positioning rod 6 for transmission.

[0029] The cam is then rotated to move the gears in a direction that the cam is in contact with the base, and the cam is moved in a direction that the cam is in contact with the base, and the cam is moved in a direction that the cam is in contact with the base. After the temperature drops, the retractable ring returns to its original state, and the limit on the aluminum substrate is released, making it easier to disassemble and assemble the aluminum substrate. On the other hand, the heating table compresses spring 2 during its downward movement. Spring 2 can provide a buffer for the clamping force of the fixing component on the aluminum substrate, reducing the probability of damage to the aluminum substrate. At the same time, the fixing component can clamp aluminum substrates of different thicknesses, thereby improving versatility. In addition, the positioning component is driven to position the box cover during the descending process of the heating table. When the temperature inside the detection box has not dropped to a safe temperature (the deformation temperature of the retractable ring, which can be set to 40-50° in this solution), outsiders cannot directly open the box cover to avoid burns. The box cover can only be opened directly when the temperature inside the detection box drops to a safe temperature. On the one hand, the retractable ring is used to fix the aluminum substrate, and on the other hand, the retractable ring is used to detect whether the temperature inside the box has reached a safe temperature.

[0030] Those skilled in the art will know that when it is necessary to inspect and repair the components in the detection box, it is necessary to wait until the heat in the detection box is completely dissipated before starting the inspection and repair. However, since the box cover is in the closed state, the detection box is in a sealed state, and the heat in the detection box is slowly dissipated. Therefore, the waiting time is long, and the inspection and repair time is greatly increased. Therefore, the transmission mechanism also includes an unlocking component, which includes a lever 4, a connecting disk 34, a magnetic ring 1 35 and a magnetic ring 2 33. An active cavity 32 for the movement of the transmission gear 3 25 is provided in the side wall of the box body 2, and an annular groove is provided on the transmission gear 3 25. The connecting disk 34 is provided with a locking member that engages with the annular groove. The locking ring 36 is connected to the locking ring 36, one end of the shift rod 4 is fixedly connected to the connecting disk 34, and the other end extends into the movable groove 3 on the box body 2, the transmission gear three 25 is movably matched with the rotating shaft 26, and a limiting ring 37 is provided on the rotating shaft 26. A plurality of meshing teeth 11 are provided on the outer circumferential surface of the limiting ring 37, and a limiting groove 17 that cooperates with the limiting ring 37 is provided on the transmission gear three 25. A plurality of meshing teeth 2 that can cooperate with the meshing teeth 11 are provided in the limiting groove 17. The magnetic ring 1 35 is installed at the bottom of the limiting groove 17 and can be attracted by the limiting ring 37. The magnetic ring 2 33 is installed on the wall of the active cavity 32 and can be attracted by the connecting disk 34.

[0031] In the above scheme, the initial state of the transmission structure is as follows Figure 9 As shown, the limiting ring cooperates with the limiting groove, the meshing tooth 1 in the limiting ring meshes with the meshing tooth 2 in the limiting groove, and the transmission gear 3 rotates with the rotating shaft. When it is necessary to inspect the inside of the detection box, the lever is manually toggled, and the lever drives the connecting plate and the transmission gear 3 to move to the right, the limiting ring is disengaged from the limiting groove, and the limit between the transmission gear 3 and the rotating shaft is released (as shown in FIG. Figure 10 As shown in the figure), the positioning rod retracts into the positioning hole under the action of spring three, and the box cover can be removed to inspect the inside of the detection box.

[0032] The above description is merely a description of the preferred embodiment of the present invention and is not to be construed as limiting the scope of the claims. The present invention is not limited to the above embodiment, and variations in the specific structure are permitted. Any variations within the scope of the independent claims of the present invention are also within the scope of protection of the present invention.

Claims

1. A device for testing the thermal conductivity of an LED aluminum substrate, comprising a detection box, a heat test assembly, and a fixing assembly, characterized in that: The heating test component and the fixing component are both installed inside the detection and; The heating test component is used to generate heat and test the thermal conductivity of the aluminum substrate; The fixing assembly comprises a fixing frame (12), a pressure rod (18) and a retractable member. The fixing frame (12) is fixedly installed inside the detection box. One end of the retractable member is fixedly connected to the fixing frame (12), and the other end is fixedly connected to the pressure rod (18). When the heating test assembly is heated, the retractable member generates a downward pressure on the aluminum substrate, thereby positioning the aluminum substrate.

2. The device for detecting thermal conductivity of an LED aluminum substrate according to claim 1, wherein: The telescopic member comprises a telescopic ring (19), a movable rod (16) and a fixed rod (14); the upper end of the fixed rod (14) is fixedly connected to the fixed frame (12); an axial movable hole (15) is provided on the fixed rod (14); one end of the movable rod (16) cooperates with the movable hole (15); the telescopic ring (19) is sleeved on the movable rod (16) and one end abuts against the lower end of the fixed rod (14), and the other end abuts against the limit step on the movable rod (16); the telescopic ring (19) is made of titanium alloy memory material.

3. The device for detecting thermal conductivity of an LED aluminum substrate according to claim 2, wherein: The retractable member further includes a spring (38), which is installed in the movable hole (15), one end of the spring (38) is fixedly connected to the upper end of the movable rod (16), and the other end is fixedly connected to the bottom of the movable hole (15).

4. The device for detecting thermal conductivity of an LED aluminum substrate according to claim 1, wherein: The heating test assembly comprises a heating platform (7) and a temperature sensor (5), wherein the heating platform (7) is used to place the aluminum substrate to be tested and generate heat, and the temperature sensor (5) is used to sense the temperature emitted by the aluminum substrate to be tested.

5. The device for detecting thermal conductivity of an LED aluminum substrate according to claim 4, characterized in that: The heating test assembly also includes a plurality of supporting mechanisms, which include a supporting seat (9) and a second spring (8). The lower end of the supporting seat (9) is fixedly connected to the bottom surface inside the detection box. A vertical mounting hole is provided on the supporting seat (9). One end of the second spring (8) is fixedly connected to the bottom of the mounting hole, and the other end is fixedly connected to the lower end surface of the heating platform (7).

6. The device for detecting thermal conductivity of an LED aluminum substrate according to claim 5, characterized in that: The detection box comprises a box body (2) and a box cover (1), wherein the box cover (1) can be snap-fitted and mounted on the upper end of the box body (2).

7. The device for detecting thermal conductivity of an LED aluminum substrate according to claim 6, wherein: A positioning component for positioning the box cover (1) is also provided inside the detection box.

8. The device for detecting thermal conductivity of an LED aluminum substrate according to claim 7, wherein: The positioning assembly comprises a transmission mechanism and a positioning rod (6); one end of the transmission mechanism is transmission-connected to the heating table (7), and the other end is transmission-connected to the positioning rod (6); a positioning hole (28) for mounting the positioning rod (6) is provided on the side wall of the box body (2); a card slot (24) is provided on the box cover (1); the positioning rod (6) can extend from the positioning hole (28) and engage with the card slot (24).

9. The device for detecting thermal conductivity of an LED aluminum substrate according to claim 8, wherein: The positioning assembly further includes a spring three (31), one end of which is fixedly connected to the bottom of the positioning hole (28), and the other end of which is fixedly connected to the positioning rod (6).

10. The device for detecting thermal conductivity of an LED aluminum substrate according to claim 8, characterized in that: The transmission mechanism includes a transmission rod (13), a transmission gear 1 (22), a transmission gear 2 (27) and a transmission gear 3 (25). A guide groove (10) is provided on the groove wall of the box body (2). Guide blocks (20) that cooperate with the guide groove (10) are provided on both sides of the heating table (7). A plurality of transmission teeth 1 (21) are provided on the guide blocks (20). The transmission gear 1 (22) is rotatably mounted in the groove wall of the box body (2). The transmission rod (13) is movably mounted on the box body. (2), one end of the transmission rod (13) is provided with a plurality of transmission teeth 2 (23) meshing with the transmission gear 1 (22), and the other end is provided with a plurality of transmission teeth 3 (29), the transmission gear 2 (27) and the transmission gear 3 (25) are coaxially rotatably mounted in the side wall of the box body (2) through the rotating shaft (26), the transmission gear 2 (27) is meshed with the transmission teeth 3 (29) for transmission, and the transmission gear 3 (25) is meshed with the transmission teeth 4 (30) provided on the positioning rod (6) for transmission.

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