Stretchable thermally conductive gasket

Abstract

The utility model discloses a kind of stretchable heat-conducting gaskets, belong to heat-conducting gasket technical field, to solve the short board of insufficient tensile property generally existing in prior art, when the installation position between heat dissipation connecting piece and heating element exists slight misalignment, assembly tolerance or slight deformation due to vibration, gasket lacking tensile capacity is difficult to adaptability extension to form effective filling with the form change of contact surface, to affect the problem of actual use effect. Including lower heat-conducting gasket, the upper side of the lower heat-conducting gasket is equipped with stretching mechanism, the stretching mechanism includes two metal heat-conducting seats, two pairs of metal rack plates and two ring blocks, and the upper side of two pairs of metal rack plates is jointly connected with upper heat-conducting gasket, the upper side of two metal heat-conducting seats is provided with locking mechanism, the metal heat-conducting seat is divided and arranged on the upper side of two lower heat-conducting gaskets, and the middle and upper side of two metal heat-conducting seats is provided with stretching assembly.

Description

Technical Field

[0001] This utility model belongs to the field of thermal conductive pad technology, specifically relating to a stretchable thermal conductive pad. Background Technology

[0002] Thermal pads fill the air gaps between heat-generating components and heat sinks or metal bases. Their flexibility and elasticity allow them to cover very uneven surfaces. Heat is conducted from discrete components or the entire PCB to the metal casing or diffuser plate, thereby improving the efficiency and usability of heat-generating electronic components.

[0003] Currently, thermal pads generally suffer from insufficient tensile strength during use. When there is slight misalignment, assembly tolerance, or slight deformation due to vibration between the heat dissipation connector and the heat-generating element, the pad, lacking tensile strength, cannot adapt to the changes in the shape of the contact surface to form an effective fill, thus affecting the actual use effect. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a stretchable thermally conductive pad, which aims to solve the problem of insufficient tensile performance that is a common shortcoming in existing technologies. When there is a slight misalignment, assembly tolerance, or slight deformation due to vibration in the installation position between the heat dissipation connector and the heat-generating element, the pad, which lacks tensile capacity, cannot adapt to the shape changes of the contact surface to form an effective fill, thus affecting the actual use effect.

[0006] (2) Technical solution

[0007] To solve the above-mentioned technical problems, this utility model provides a stretchable thermally conductive pad, including a lower thermally conductive pad. A stretching mechanism is provided on both sides of the upper part of the lower thermally conductive pad. The stretching mechanism includes two metal thermally conductive seats, two pairs of metal rack plates, and two ring blocks. An upper thermally conductive pad is connected to the upper part of the two pairs of metal rack plates. A locking mechanism is provided above the two metal thermally conductive seats. The metal thermally conductive seats are respectively located on the upper sides of the two lower thermally conductive pads. A stretching assembly is provided in the middle and above of the two metal thermally conductive seats. A guide assembly is provided on the outer side of the two pairs of metal rack plates.

[0008] Furthermore, the stretching assembly includes a rotating rod, which is connected and installed on the middle of one side of two metal heat-conducting seats. A ring block is fixed around one end of the rotating rod, and a first gear is fixed around the inner section of the rotating rod in each of the two metal heat-conducting seats. A second gear meshes with one side of the two first gears, and a driven rod is fixed in the middle of the two second gears. A metal rack plate meshes with the outer sides of each of the two sets of first gears and second gears, and side guide blocks are fixed on both sides of the metal rack plate. Guide brackets are fixed on both sides above the metal heat-conducting seats.

[0009] Furthermore, the first gear and the second gear are meshing and aligned.

[0010] Furthermore, the guide frame is connected to the side guide blocks on both sides of its metal rack plate by a movable guide connection.

[0011] Furthermore, the guide assembly includes a metal connecting block, which is fixed to the outside of the metal rack plate. A metal heat-conducting block is connected to the end of the metal connecting block, and guide grooves are provided on both sides above the metal heat-conducting base.

[0012] Furthermore, the guide groove and its metal heat-conducting block are connected in a close-fitting guide manner.

[0013] Furthermore, the locking mechanism includes preset slots, which are respectively located above two metal heat-conducting bases. A return spring is installed on one side of the middle of the two preset slots, and a connecting guide is fixed to the ends of the two return springs. Side guide slots for guiding the connecting guide are opened on both sides of the two preset slots. Fixing blocks are fixed below the two sections of the connecting guide, and locking rods are fixed at the inner ends of the two fixing blocks. Slots are provided around the middle of the two ring blocks.

[0014] Furthermore, the central opening size of the slot matches the end size of its locking rod.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] When the spacing between the lower and upper thermally conductive pads needs to be adjusted to accommodate different filling requirements, the operator can manually rotate the ring block at the end of the rod. At this time, the first gear located around the two ends of the rotating rod will be driven and drive the second gear meshing on one side to move relative to each other. This causes the metal rack plate meshing with the outer sides of the two sets of first and second gears to lift the upper thermally conductive pad under the guidance of the side guide block and the corresponding guide frame, thereby adjusting the spacing between the two pads. At the same time, since the outer side of the metal rack plate is fixedly connected with a metal connecting block and a metal thermally conductive block, and the metal thermally conductive block is always in close contact with the guide groove opened on the metal thermally conductive seat, there is always a metal thermally conductive connection between the two pads. This ensures that the thermal conductivity is not affected while achieving the purpose of stretching adjustment, thus meeting the actual use requirements.

[0018] Before adjustment, the operator can manually push the connecting guide backward to compress the two reset springs connected to it. At this time, the locking rods located at the inner ends of the two fixed blocks at the bottom of the connecting guide will disengage from the corresponding slots on the periphery of the corresponding ring blocks, thereby releasing their limits. At this time, the spacing adjustment operation can be performed. Similarly, after the adjustment operation is completed, the operator can slowly release the connecting guide. At this time, the two reset springs will elastically reset, thereby indirectly causing the two locking rods to instantly insert into the corresponding slots on the periphery of the corresponding ring blocks to form limits, thus ensuring the stability of the structure and achieving a stable state after adjustment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of a three-dimensional partial structure;

[0022] Figure 3 This is a schematic diagram of a partial structure of the stretching component;

[0023] Figure 4 for Figure 2 Schematic diagram of the structure at point A in the middle.

[0024] The labels in the attached diagram are as follows: 1. Lower thermal conductive pad; 2. Tensioning mechanism; 21. Metal thermal conductive base; 22. Tensioning assembly; 221. Rotating rod; 222. Ring block; 223. First gear; 224. Second gear; 225. Driven rod; 226. Metal rack plate; 227. Side guide block; 228. Guide frame; 23. Guide assembly; 231. Metal connecting block; 232. Metal thermal conductive block; 233. Guide groove; 3. Locking mechanism; 31. Preset groove; 32. Return spring; 33. Connecting guide frame; 34. Side guide groove; 35. Fixing block; 36. Locking rod; 37. Slot; 4. Upper thermal conductive pad. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] This specific embodiment is a stretchable thermally conductive pad, the structural diagram of which is shown below. Figures 1 to 4As shown, the device includes a lower thermally conductive pad 1. Tensioning mechanisms 2 are arranged on both sides above the lower thermally conductive pad 1. The tensioning mechanism 2 includes two metal thermally conductive seats 21, two pairs of metal rack plates 226, and two ring blocks 222. An upper thermally conductive pad 4 is connected to the upper part of the two pairs of metal rack plates 226. A locking mechanism 3 is provided above the two metal thermally conductive seats 21. The metal thermally conductive seats 21 are respectively located on both sides above the two lower thermally conductive pads 1. Tensioning components 22 are provided in the middle and above the two metal thermally conductive seats 21. The tensioning component 22 includes a rotating rod 221, which is connected and installed in the middle of one side of the two metal thermally conductive seats 21. Ring blocks 22 are fixed around one end of the rotating rod 221. 2. The rotating rod 221 is respectively located around the inner periphery of the two metal heat-conducting seats 21, and a first gear 223 is fixed thereon. A second gear 224 meshes with one side of each of the two first gears 223. The first gear 223 and the second gear 224 are meshed and aligned. A driven rod 225 is fixed in the middle of each of the two second gears 224. Metal rack plates 226 mesh with the outer sides of each of the two sets of first gears 223 and second gears 224. Side guide blocks 227 are fixed on both sides of the metal rack plates 226. Guide brackets 228 are fixed on both sides above the metal heat-conducting seats 21. The guide brackets 228 and the side guide blocks 227 on both sides of the metal rack plates 226 are movably guided. The two pairs of metal rack plates 226... A guide assembly 23 is provided on the outer side of the rack plate 226. The guide assembly 23 includes a metal connecting block 231, which is fixed to the outer side of the metal rack plate 226. A metal heat-conducting block 232 is connected to the end of the metal connecting block 231. Guide grooves 233 are provided on both sides above the metal heat-conducting seat 21. The guide grooves 233 and the metal heat-conducting blocks 232 are in a close-fitting guide connection. When it is necessary to adjust the spacing between the lower heat-conducting pad 1 and the upper heat-conducting pad 4 to adapt to different filling requirements, the operator can manually rotate the ring block 222 at the end of the rod 221 to make it rotate. At this time, the first gear 223 located on both sides of the rotating rod 221 will be driven and drive the meshing first gear 223 on one side. The two gears 224 move relative to each other, causing the metal rack plates 226, which are respectively meshed with the outer sides of the two sets of first gears 223 and second gears 224, to rise with the upper heat-conducting pads 4 under the guidance of the side guide block 227 and the corresponding guide frame 228. This achieves the adjustment of the distance between the two pads. At the same time, since the metal rack plates 226 are fixedly connected to the outer side of the metal rack plates 226 with metal connecting blocks 231 and metal heat-conducting blocks 232, and the metal heat-conducting blocks 232 are always in close contact with the guide grooves 233 opened on the metal heat-conducting base 21, there is always a metal heat-conducting connection between the two pads. This ensures that the heat conduction quality is not affected while achieving the purpose of stretching adjustment, thus meeting the actual use requirements.

[0027] The locking mechanism 3 includes a preset groove 31, which is located above two metal heat-conducting bases 21. A return spring 32 is installed on one side of the middle of the two preset grooves 31, and a connecting guide 33 is fixed to the end of the two return springs 32. Side guide grooves 34 are provided on both sides of the two preset grooves 31 to guide the connecting guide 33. Fixing blocks 35 are fixed to the lower part of the two sections of the connecting guide 33, and locking rods 36 are fixed to the lower inner end of the two fixing blocks 35. Slots 37 are provided around the middle of the two ring blocks 222. The size of the middle part of the slot 37 matches the end size of the locking rod 36. Before adjustment, the operator can manually adjust the size. The connecting guide 33 is pushed backward, compressing the two return springs 32 connected to it. At this time, the locking rods 36 located at the inner ends of the two fixed blocks 35 at the bottom of the connecting guide 33 will disengage from the corresponding slots 37 on the periphery of the corresponding ring block 222, thereby releasing the limit of the two. At this time, the spacing adjustment operation can be performed. Similarly, after the adjustment operation is completed, the operator can slowly release the connecting guide 33. At this time, the two return springs 32 will elastically return to their original position, thereby indirectly causing the two locking rods 36 to be instantly inserted into the corresponding slots 37 on the periphery of the corresponding ring block 222 to form a limit, thereby ensuring the stability of the structure and achieving a stable state after adjustment.

[0028] Working principle: When it is necessary to adjust the spacing between the lower thermal pad 1 and the upper thermal pad 4 to adapt to different filling requirements, the operator can manually push the connecting guide 33 backward in advance to compress the two reset springs 32 connected to it. At this time, the locking rods 36 located at the inner ends of the two fixed blocks 35 at the bottom of the connecting guide 33 will disengage from the corresponding slots 37 on the periphery of the corresponding ring block 222, thereby releasing the limit of both. Then, the operator manually rotates the ring block 222 at the end of the rod 221 to make it rotate. The first gear 223 located on the periphery of the two sections of the rotating rod 221 will be driven and drive the second gear 224 meshing on one side to move relative to each other. This causes the metal rack plates 226 meshing on the outer sides of the two sets of first gears 223 and second gears 224 to move relative to each other on the side guide block 227 and the corresponding guide. Guided by the frame 228, the upper heat-conducting pad 4 is raised to adjust the distance between the two pads. At the same time, since the metal rack plate 226 is fixedly connected to the metal connecting block 231 and the metal heat-conducting block 232, and the metal heat-conducting block 232 is always in close contact with the guide groove 233 on the metal heat-conducting seat 21, there is always a metal heat-conducting connection between the two pads. This ensures that the heat conduction quality meets the actual requirements while achieving the purpose of stretching adjustment. Then, the operator can slowly release the connecting guide frame 33. At this time, the two return springs 32 will elastically return to their original position, and then indirectly lead the two locking rods 36 to be instantly inserted into the corresponding slots 37 on the periphery of the corresponding ring block 222 to form a limit, thereby ensuring the stability of the structure and achieving a stable state after adjustment.

[0029] All technical features in this embodiment can be freely combined according to actual needs.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A stretchable thermally conductive pad, comprising a lower thermally conductive pad (1), characterized in that, The lower heat-conducting pad (1) is provided with a tensioning mechanism (2) on both sides above. The tensioning mechanism (2) includes two metal heat-conducting seats (21), two pairs of metal rack plates (226) and two ring blocks (222). The upper heat-conducting pad (4) is connected to the upper part of the two pairs of metal rack plates (226). A locking mechanism (3) is provided above the two metal heat-conducting seats (21). The metal heat-conducting seats (21) are respectively located on the upper sides of the two lower heat-conducting pads (1). A tensioning component (22) is provided in the middle and above of the two metal heat-conducting seats (21). A guide component (23) is provided on the outer side of the two pairs of metal rack plates (226).

2. The stretchable thermally conductive pad according to claim 1, characterized in that, The stretching assembly (22) includes a rotating rod (221), which is connected to the middle of one side of two metal heat-conducting seats (21). A ring block (222) is fixed around one end of the rotating rod (221), and a first gear (223) is fixed around the inner section of the rotating rod (221) of the two metal heat-conducting seats (21). A second gear (224) meshes with one side of the two first gears (223), and a driven rod (225) is fixed in the middle of the two second gears (224). A metal rack plate (226) meshes with the outer sides of the two sets of first gears (223) and second gears (224), and side guide blocks (227) are fixed on both sides of the metal rack plate (226). A guide bracket (228) is fixed on both sides above the metal heat-conducting seat (21).

3. The stretchable thermally conductive pad according to claim 2, characterized in that, The first gear (223) and the second gear (224) are meshing type of positioning transmission.

4. The stretchable thermally conductive pad according to claim 2, characterized in that, The guide frame (228) is connected to the side guide blocks (227) on both sides of its metal rack plate (226) by a movable guide connection.

5. A stretchable thermally conductive pad according to claim 1, characterized in that, The guide assembly (23) includes a metal connecting block (231), which is fixed to the outside of the metal rack plate (226). The end of the metal connecting block (231) is connected to a metal heat-conducting block (232), and guide grooves (233) are provided on both sides above the metal heat-conducting seat (21).

6. A stretchable thermally conductive pad according to claim 5, characterized in that, The guide groove (233) and its metal heat-conducting block (232) are connected by a fitted guide.

7. A stretchable thermally conductive pad according to claim 1, characterized in that, The locking mechanism (3) includes a preset groove (31), which is located above two metal heat-conducting bases (21). A return spring (32) is installed on one side of the middle of the two preset grooves (31), and a connecting guide (33) is fixed at the end of the two return springs (32). Side guide grooves (34) for guiding the connecting guide (33) are opened on both sides of the two preset grooves (31). Fixing blocks (35) are fixed below the two sections of the connecting guide (33), and locking rods (36) are fixed at the inner lower ends of the two fixing blocks (35). Slots (37) are provided around the middle of the two ring blocks (222).

8. A stretchable thermally conductive pad according to claim 7, characterized in that, The central opening size of the slot (37) matches the end size of its locking rod (36).

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