Cooling fin mounting and fixing clamp

Abstract

The invention discloses a cooling fin mounting and fixing clamp, and relates to the field of clamps, the cooling fin mounting and fixing clamp comprises a base and a partition plate, a driving assembly is arranged on the upper surface of the base, two centering assemblies are arranged on the upper surface of the base, a limiting assembly is arranged in a T-shaped pushing block in a penetrating mode, and a buffering assembly is arranged on the upper surface of the base. The two-way lead screw drives the moving block to move, the T-shaped pushing blocks on the two sides are used for conducting centering adjustment on the cooling fin base, the T-shaped pushing blocks move on the outer surface of the inclined guide rod, the cooling fin base is driven to conduct centering adjustment in the vertical direction, centering positioning is conveniently conducted, the cooling fin base extrudes the extrusion block, and the transmission block is driven to move downwards; the lifting rod and the connecting plate drive the abutting plate to move downwards, so that the cooling fin base is fastened and clamped, the buffering effect on the cooling fin base is achieved through the buffering plate and the buffering spring, the threaded rod is rotated to drive the limiting plate to ascend, and therefore the pre-tightening amount of the buffering spring is adjusted, and the buffering effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of jigs, and particularly relates to a fixture for installing and fixing a heat sink. Background Art

[0002] A heat sink is a device for dissipating heat from heat-generating electronic components in an electrical appliance. It is mostly made of aluminum alloy, brass or bronze in the form of plates, sheets, multi-sheets, etc. For example, a CPU (Central Processing Unit) in a computer requires a relatively large heat sink, and power tubes, line tubes in a television, and power amplifier tubes in a power amplifier all require heat sinks.

[0003] When the existing heat sinks are produced and installed, a fixture is needed to clamp the base of the heat sink, and then several copper sheets are inserted into the copper tubes on the top of the base in sequence. According to different insertion methods, there are two different types of heat sinks: copper heat pipe through-sheet and welding. Taking the copper heat pipe through-sheet as an example, when installing the heat sink, a manipulator needs to repeatedly grab the heat sink. The heat sink is internally provided with round holes that match the copper tubes, and the diameter of the round holes is slightly smaller than the diameter of the copper tubes. Then, the grabbed heat sink is inserted into the copper tubes, and this process is repeated dozens of times to complete the installation of the heat sink.

[0004] The existing fixture for installing and fixing a heat sink does not have a component for centering adjustment itself. This leads to the need for workers to repeatedly measure the position of the fixture when clamping, so as to determine whether the base of the heat sink clamped by the fixture is centered and aligned. If it is not centered and aligned, it will cause the installation of the heat sink to fail. Moreover, the process of centering adjustment of the existing fixture is too cumbersome, increasing the workload of workers. Summary of the Invention

[0005] (1) Technical Problems to be Solved

[0006] In view of the above problems existing in the prior art, the present invention provides a fixture for installing and fixing a heat sink.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the present invention is realized through the following technical solutions: A fixture for installing and fixing a heat sink includes a base, two partition plates are arranged on the upper surface of the base, a driving component is arranged on the upper surface of the base, and two centering components are arranged on the upper surface of the base;

[0009] The centering component includes a moving block slidably connected to the upper surface of the base. Four inclined guide rods are fixedly connected to one side of the moving block close to another centering component. A T-shaped pushing block is movably connected to the outer surfaces of two adjacent inclined guide rods;

[0010] A limiting component is inserted into the T-shaped pushing block;

[0011] The limiting component includes a squeezing block inserted into the T-shaped pushing block. One side of the squeezing block close to the inside of the T-shaped pushing block abuts against a transmission block. The top of the transmission block is fixedly connected with two lifting rods. The top of the lifting rods is fixedly connected with a connecting plate. The lower surface of the connecting plate is fixedly connected with three squeezing springs. The bottom ends of the squeezing springs are fixedly connected with abutting plates;

[0012] A buffer component is arranged on the upper surface of the base;

[0013] The buffer component includes four fixing blocks fixedly connected to the upper surface of the base. A limiting rod is fixedly connected inside two adjacent fixing blocks. The outer surface of the limiting rod is movably connected with a limiting plate. A threaded rod is threadedly connected inside the limiting plate. The upper surface of the limiting plate is fixedly connected with two buffer springs. A connecting insertion rod is inserted into the buffer springs.

[0014] As a preferred scheme of the heat sink installation and fixing fixture described in the present invention, the driving component includes a motor fixedly connected to the outer surface of the base. The output end of the motor is fixedly connected with a bidirectional lead screw. The outer surface of the bidirectional lead screw is threadedly connected with the inside of the moving block.

[0015] As a preferred scheme of the heat sink installation and fixing fixture described in the present invention, a slide rail is arranged on the upper surface of the base. A chute matching the slide rail is opened on the lower surface of the moving block. A rectangular groove with the same length as the width of the buffer plate is opened inside the moving block.

[0016] As a preferred scheme of the heat sink installation and fixing fixture described in the present invention, a compression spring is sleeved on the outer surface of the inclined guide rod. One end of the compression spring away from the moving block is fixedly connected with the outer surface of the T-shaped pushing block. The end of the inclined guide rod passing through the T-shaped pushing block is fixedly connected with a limiting block.

[0017] As a preferred scheme of the heat sink installation and fixing fixture described in the present invention, a jacking spring is fixedly connected to the bottom end of the transmission block. The bottom end of the jacking spring is fixedly connected with the bottom of the inner cavity of the T-shaped pushing block. The outer surfaces of the squeezing block and the transmission block are provided with the same inclined surfaces.

[0018] As a preferred scheme of the heat sink installation and fixing fixture described in the present invention, a rectangular opening for the sliding of the squeezing block is opened on the outer surface of the T-shaped pushing block. Two sliding blocks are fixedly connected to the lower surface of the squeezing block. A sliding groove matching the sliding blocks is opened on the outer surface of the rectangular opening.

[0019] As a preferred solution of the heat sink mounting and fixing fixture described in the present invention, a limit pin is inserted inside the compression spring, a round hole matching the limit pin is opened on the lower surface of the connecting plate, and the top end of the limit pin always remains inside the round hole.

[0020] As a preferred solution of the heat sink mounting and fixing fixture described in the present invention, four raised blocks are arranged on the outer surface of the buffer plate, and through holes matching the limit rods are opened inside the raised blocks.

[0021] As a preferred solution of the heat sink mounting and fixing fixture described in the present invention, a square groove matching the raised block is opened inside the fixed block, and a cavity with the same width as the limit plate is opened at the bottom end of the square groove inside the fixed block.

[0022] As a preferred solution of the heat sink mounting and fixing fixture described in the present invention, the height of the rectangular groove inside the moving block is sufficient for the buffer plate to move downward under the action of the buffer spring.

[0023] (III) Beneficial effects

[0024] The present invention provides a heat sink mounting and fixing fixture, which has the following beneficial effects:

[0025] 1. By driving the bidirectional lead screw to rotate through the motor, the bidirectional lead screw drives two moving blocks to move, thereby driving the T-shaped pushing block to move through the inclined guide rod. When the T-shaped pushing block contacts the heat sink base, it drives the heat sink base to move towards the center position of the base. When the centering components on both sides are in contact with the heat sink base, the heat sink base drives the T-shaped pushing block to move on the outer surface of the inclined guide rod, so that the T-shaped pushing block drives the heat sink base to perform vertical centering adjustment, and finally completes the centering clamping of the heat sink base, which is convenient for centering positioning.

[0026] 2. When the T-shaped pushing block presses against the heat sink base, the heat sink base presses the extrusion block, so that the extrusion block drives the transmission block to move downward. The transmission block drives the abutting plate to move downward through the lifting rod and the connecting plate, thereby driving the abutting plate to limit the heat sink base in the vertical direction, so as to firmly clamp the heat sink base.

[0027] 3. By rotating the threaded rod, the limit plate is driven to rise, thereby adjusting the pre-tightening amount of the buffer spring. When the heat sink is inserted into the copper tube at the top of the heat sink base, it is buffered by the buffer plate and the buffer spring. When the buffer plate and the buffer spring return to their original positions, when the heat sink base bounces upward due to inertia, the heat sink base can be limited by the abutting plate and the compression spring in the limit component, improving the buffer effect. Description of the drawings

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0029] Figure 1 It is a schematic structural diagram of the whole of the present invention.

[0030] Figure 2 It is a schematic structural diagram of the driving component of the present invention.

[0031] Figure 3 It is a schematic structural diagram of the centering component of the present invention.

[0032] Figure 4 It is a schematic structural diagram of the limiting component of the present invention.

[0033] Figure 5 It is a schematic sectional structural diagram of the limiting component of the present invention.

[0034] Figure 6 It is a schematic structural diagram of the buffer component of the present invention.

[0035] Figure 7 It is an exploded structural diagram of the buffer component of the present invention.

[0036] In the figure, 1, base; 2, centering component; 201, moving block; 202, compression spring; 203, limiting block; 204, T-shaped pushing block; 205, inclined guide rod; 3, limiting component; 301, extrusion block; 302, connecting plate; 303, abutting plate; 304, lifting rod; 305, transmission block; 306, limiting pin; 307, extrusion spring; 308, jacking spring; 4, buffer component; 401, fixed block; 402, buffer plate; 403, connecting insertion rod; 404, buffer spring; 405, threaded rod; 406, limiting plate; 407, limiting rod; 5, driving component; 501, motor; 502, bidirectional lead screw; 6, partition plate. Specific Embodiments

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention.

[0038] Embodiment 1

[0039] Refer to Figure 1 , Figure 2 and Figure 3, which is the first embodiment of the present invention. This embodiment provides a heat sink installation and fixing fixture, including a base 1. There are two partition plates 6 on the upper surface of the base 1. A driving component 5 is arranged on the upper surface of the base 1. There are two centering components 2 on the upper surface of the base 1. The centering component 2 includes a moving block 201 slidably connected to the upper surface of the base 1. Four inclined guide rods 205 are fixedly connected to one side of the moving block 201 close to another centering component 2. A T-shaped pushing block 204 is movably connected to the outer surface of two adjacent inclined guide rods 205.

[0040] Specifically, the driving component 5 includes a motor 501 fixedly connected to the outer surface of the base 1. The output end of the motor 501 is fixedly connected to a bidirectional lead screw 502. The outer surface of the bidirectional lead screw 502 is threadedly connected to the inside of the moving block 201. A slide rail is arranged on the upper surface of the base 1. A chute matching the slide rail is opened on the lower surface of the moving block 201. A rectangular groove with the same length as the width of the buffer plate 402 is opened inside the moving block 201. A compression spring 202 is sleeved on the outer surface of the inclined guide rod 205. One end of the compression spring 202 far from the moving block 201 is fixedly connected to the outer surface of the T-shaped pushing block 204. One end of the inclined guide rod 205 passing through the T-shaped pushing block 204 is fixedly connected to a limiting block 203.

[0041] Furthermore, the motor 501 drives the bidirectional lead screw 502 to rotate, so that the moving blocks 201 in the two centering components 2 move towards each other on the outer surface of the bidirectional lead screw 502. A chute is opened on the lower surface of the moving block 201, and a slide rail is arranged on the upper surface of the base 1. The moving block 201 drives the inclined guide rod 205 and the T-shaped pushing block 204 to move. A compression spring 202 is arranged on the outer surface of the inclined guide rod 205, and one end of the inclined guide rod 205 passing through the T-shaped pushing block 204 is fixedly connected to a limiting block 203, so that the T-shaped pushing block 204 always remains at one end of the inclined guide rod 205 far from the moving block 201. The motor 501 has a self-locking function.

[0042] Embodiment 2

[0043] Refer to Figure 1 、 Figure 2 、 Figure 4 And Figure 5 , which is the second embodiment of the present invention. This embodiment is based on the previous embodiment. A limiting component 3 is inserted inside the T-shaped pushing block 204. The limiting component 3 includes an extrusion block 301 inserted inside the T-shaped pushing block 204. A transmission block 305 abuts against one side of the extrusion block 301 close to the inside of the T-shaped pushing block 204. Two lifting rods 304 are fixedly connected to the top of the transmission block 305. A connecting plate 302 is fixedly connected to the top of the lifting rods 304. Three compression springs 307 are fixedly connected to the lower surface of the connecting plate 302. A contact plate 303 is fixedly connected to the bottom end of the compression springs 307.

[0044] Specifically, a jacking spring 308 is fixedly connected to the bottom end of the transmission block 305. The bottom end of the jacking spring 308 is fixedly connected to the bottom of the inner cavity of the T-shaped pushing block 204. The outer surfaces of the extrusion block 301 and the transmission block 305 are both provided with the same inclined surfaces. A rectangular opening for the extrusion block 301 to slide is formed on the outer surface of the T-shaped pushing block 204. Two sliding blocks are fixedly connected to the lower surface of the extrusion block 301. A sliding groove matching with the sliding blocks is formed on the outer surface of the rectangular opening. A limiting pin 306 is inserted into the inside of the extrusion spring 307. A round hole matching with the limiting pin 306 is formed on the lower surface of the connecting plate 302. The top end of the limiting pin 306 always remains inside the round hole.

[0045] Furthermore, when the heat sink base presses the T-shaped pushing block 204, the extrusion block 301 drives the transmission block 305 to descend, drives the connecting plate 302 to descend through the lifting rod 304, and then drives the abutting plate 303 to descend, so as to limit one corner of the heat sink. The outer surfaces of the extrusion block 301 and the transmission block 305 are both provided with inclined surfaces, and the reset height of the jacking spring 308 does not exceed the height of the rectangular opening formed on the outer surface of the T-shaped pushing block 204 for the extrusion block 301 to move, so as to ensure that the extrusion block 301 does not break away from the T-shaped pushing block 204, and the limiting pin 306 always remains in the round hole on the lower surface of the connecting plate 302, thereby realizing the limitation of the abutting plate 303.

[0046] Embodiment 3

[0047] Referring to Figure 1 、 Figure 2 、 Figure 6 And Figure 7 This is the third embodiment of the present invention. Based on the previous embodiment, a buffer assembly 4 is provided on the upper surface of the base 1. The buffer assembly 4 includes four fixing blocks 401 fixedly connected to the upper surface of the base 1. A limiting rod 407 is fixedly connected inside two adjacent fixing blocks 401. A limiting plate 406 is movably connected to the outer surface of the limiting rod 407. A threaded rod 405 is threadedly connected to the inside of the limiting plate 406. Two buffer springs 404 are fixedly connected to the upper surface of the limiting plate 406. A connecting plug rod 403 is inserted into the inside of the buffer springs 404.

[0048] Specifically, four protruding blocks are provided on the outer surface of the buffer plate 402. Through holes matching with the limiting rods 407 are formed inside the protruding blocks. Square grooves matching with the protruding blocks are formed inside the fixing blocks 401. A cavity with the same width as the limiting plate 406 is formed at the bottom end of the square groove inside the fixing blocks 401. The height of the rectangular groove inside the moving block 201 is sufficient for the buffer plate 402 to move downward under the action of the buffer springs 404.

[0049] Furthermore, by adjusting the threaded rod 405, the limit plate 406 is driven to move up and down, and the limit plate 406 drives the buffer spring 404 to be compressed, thereby realizing the pre-tightening of the buffer spring 404. A cavity for the lifting of the limit plate 406 is provided inside the fixed block 401, and a square groove for the movement of the protruding block on the outer surface of the buffer plate 402 is provided inside the fixed block 401. When the heat sink base is squeezed, the buffer plate 402 is squeezed, thereby driving the buffer spring 404 to be compressed. When the buffer plate 402 moves downward, the limit of the buffer plate 402 is realized through the cooperation of the square groove inside the fixed block 401 and the limit rod 407, avoiding the shaking of the buffer plate 402. And a rectangular groove with the same length as the width of the buffer plate 402 is provided inside the moving block 201, and the height of the rectangular groove is sufficient for the buffer plate 402 to move up and down, thereby realizing the buffering of the heat sink base.

[0050] Working principle: When installing a heat sink using the heat sink installation and fixing fixture, place the heat sink base on the base 1, and then start the motor 501 to drive the rotation of the bidirectional lead screw 502. The two moving blocks 201 move towards each other as the bidirectional lead screw 502 rotates. The moving blocks 201 slide through the chutes on the lower surface and the slide rails on the upper surface of the base 1. The moving blocks 201 drive the inclined guide rods 205 and the T-shaped pushing blocks 204 to move. A compression spring 202 is arranged on the outer surface of the inclined guide rod 205, and a limiting block 203 is fixedly connected to one end of the inclined guide rod 205 passing through the T-shaped pushing block 204, so that the T-shaped pushing block 204 is always kept at the end of the inclined guide rod 205 away from the moving block 201. When the T-shaped pushing block 204 contacts the heat sink base 1, it drives the heat sink base to move. When both sides of the heat sink base are abutted by the T-shaped pushing blocks 204, the horizontal centering adjustment of the heat sink base is completed. At this time, the heat sink base squeezes the T-shaped pushing block 204, causing the T-shaped pushing block 204 to move on the outer surface of the inclined guide rod 205, so that the two T-shaped pushing blocks 204 on the same side perform vertical centering adjustment, and finally the centering clamping of the heat sink base is completed. When the heat sink base does not squeeze the T-shaped pushing block 204, the transmission block 305 inside the T-shaped pushing block 204 jacks up the connecting plate 302 under the action of the jacking spring 308 to avoid the abutting plate 303 hindering the centering adjustment of the heat sink base. When the heat sink base squeezes the T-shaped pushing block 204, the extrusion block 301 drives the transmission block 305 to descend, drives the connecting plate 302 to descend through the lifting rod 304, and then drives the abutting plate 303 to descend to limit one corner of the heat sink, and finally realizes the centering clamping and positioning of the heat sink base. At this time, start to install the heat sink into the copper tube on the upper surface of the heat sink base. After inserting the heat sink, the heat sink base is driven to receive a downward pressure, which drives the buffer plate 402 to move downward. The buffer plate 402 drives the buffer spring 404 to be compressed and reset, and finally realizes the buffering effect. When the buffer plate 402 and the buffer spring 404 are reset, when the heat sink base bounces upward due to inertia, the heat sink base can be limited by the abutting plate 303 and the compression spring 307 in the limiting component 3, and the pre-tightening amount of the buffer spring 404 can be adjusted by adjusting the threaded rod 405 to drive the limiting plate 406 to rise and fall, so as to improve the buffering effect, and finally realize the installation of the heat sink.

[0051] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

Claims

1. A heat sink mounting fixture, comprising a base (1), characterized in that: Two partitions (6) are arranged on the upper surface of the base (1), a driving component (5) is arranged on the upper surface of the base (1), and two centering components (2) are arranged on the upper surface of the base (1); A centering component (2) comprises a moving block (201) slidably connected to the upper surface of the base (1), wherein the moving block (201) is fixedly connected to a side close to another centering component (2) with four inclined guide rods (205), wherein the outer surfaces of two adjacent inclined guide rods (205) are movably connected to a T-shaped pushing block (204); A limit assembly (3) is inserted into the interior of the T-shaped pushing block (204); The limiting assembly (3) comprises an extrusion block (301) inserted into the interior of the T-shaped pushing block (204); a transmission block (305) is abutted against a side of the extrusion block (301) close to the interior of the T-shaped pushing block (204); two lifting rods (304) are fixedly connected to the top of the transmission block (305); a connecting plate (302) is fixedly connected to the top of the lifting rod (304); three extrusion springs (307) are fixedly connected to the lower surface of the connecting plate (302); and a contact plate (303) is fixedly connected to the bottom end of each extrusion spring (307); A buffer component (4) is provided on the upper surface of the base (1); The buffer assembly (4) comprises four fixed blocks (401) fixedly connected to the upper surface of the base (1), wherein two adjacent fixed blocks (401) are internally fixedly connected with a limiting rod (407), the outer surface of the limiting rod (407) is movably connected with a limiting plate (406), the inner thread of the limiting plate (406) is connected with a threaded rod (405), the upper surface of the limiting plate (406) is fixedly connected with two buffer springs (404), and the buffer spring (404) is internally provided with a connecting rod (403) inserted therein.

2. The heat sink installation and fixing fixture according to claim 1, characterized in that: The driving assembly (5) comprises a motor (501) fixedly connected to the outer surface of the base (1), the output end of the motor (501) is fixedly connected to a bidirectional screw rod (502), and the outer surface of the bidirectional screw rod (502) is connected to the internal thread of the moving block (201).

3. The heat sink installation and fixing fixture according to claim 2, characterized in that: The upper surface of the base (1) is provided with a slide rail, the lower surface of the moving block (201) is provided with a slide groove matching the slide rail, and the interior of the moving block (201) is provided with a rectangular groove having a length equal to the width of the buffer plate (402).

4. The heat sink installation and fixing fixture according to claim 3, characterized in that: The outer surface of the inclined guide rod (205) is sleeved with a compression spring (202), one end of the compression spring (202) away from the moving block (201) is fixedly connected to the outer surface of the T-shaped pushing block (204), and one end of the inclined guide rod (205) passes through the T-shaped pushing block (204) and is fixedly connected to the limiting block (203).

5. The heat sink installation and fixing fixture according to claim 4, characterized in that: The bottom end of the transmission block (305) is fixedly connected to a lifting spring (308), and the bottom end of the lifting spring (308) is fixedly connected to the bottom of the inner cavity of the T-shaped push block (204). The outer surfaces of the extrusion block (301) and the transmission block (305) are both provided with the same inclined surface.

6. The heat sink installation and fixing fixture according to claim 5, characterized in that: The outer surface of the T-shaped pushing block (204) is provided with a rectangular opening for sliding of the extrusion block (301), the lower surface of the extrusion block (301) is fixedly connected to two sliding blocks, and the outer surface of the rectangular opening is provided with a sliding groove matching with the sliding blocks.

7. The heat sink installation and fixing fixture according to claim 6, characterized in that: A limit pin (306) is inserted into the interior of the extrusion spring (307), and a circular hole matching the limit pin (306) is opened on the lower surface of the connecting plate (302), and the top end of the limit pin (306) is always kept inside the circular hole.

8. The heat sink installation and fixing fixture according to claim 7, characterized in that: The outer surface of the buffer plate (402) is provided with four protruding blocks, and the interior of the protruding blocks is provided with through holes that match the limiting rods (407).

9. The heat sink installation and fixing fixture according to claim 8, characterized in that: The fixing block (401) is provided with a square groove matching the protruding block, and the fixing block (401) is provided with a cavity having the same width as the limiting plate (406) at the bottom end of the square groove.

10. The heat sink installation and fixing fixture according to claim 9, characterized in that: The height of the rectangular groove inside the moving block (201) is sufficient for the buffer plate (402) to move downward under the action of the buffer spring (404).

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