A buckle-bite type expandable spliced aluminum alloy heat dissipation strip

Abstract

The utility model discloses a kind of buckle occlusion type expandable splicing's aluminum alloy heat dissipation strip, including two heat dissipation strip bodies, the opposite face of two heat dissipation strip bodies is close to corner place and is all embedded with positioning shaft, the positioning shaft is used to realize pre-positioning in the process of two heat dissipation strip bodies splicing, limit both splicing direction and relative position, the middle region of the opposite end face of two heat dissipation strip bodies is penetrated and is provided with buckle assembly, the buckle assembly can be driven two heat dissipation strip bodies to complete clamping connection by oblique force, and based on the pre-positioning of positioning shaft and the occlusion cooperation of buckle assembly, the expandable splicing of heat dissipation strip is realized.The utility model is through the structure of single pull rod driving bilateral elastic card rod synchronous locking, using the fixed characteristics after the deformation of elastic ring, so that whole operation is simple, need not additional tool, can realize the modularization expansion and repeated disassembly of heat dissipation strip, with stronger practicality and universality.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation strip application technology, and in particular to a snap-fit, expandable splicing aluminum alloy heat dissipation strip. Background Technology

[0002] As a common heat dissipation structure, heat sinks are widely used in the heat dissipation systems of various electronic devices, electrical equipment and mechanical devices. Their main function is to increase the contact area with air, accelerate heat dissipation, and thus ensure that the equipment operates stably at a suitable temperature.

[0003] However, most common heat sinks are one-piece molded designs with fixed lengths, limiting their applicability as they cannot be flexibly expanded to meet actual heat dissipation needs. While heat sinks assembled using mechanical connections such as bolts and screws offer some degree of expansion capability, the installation process is cumbersome, requiring additional tools. Furthermore, under long-term operation and the effects of thermal expansion and contraction, the connections are prone to loosening, leading to increased contact thermal resistance, decreased heat dissipation efficiency, and even the risk of structural separation. Therefore, this invention proposes a snap-fit, expandable aluminum alloy heat sink. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an aluminum alloy heat sink with a snap-fit, expandable splicing mechanism, so as to solve the problems of inconvenient splicing and installation, poor connection stability and insufficient expandability of existing heat sinks.

[0005] To solve the above technical problems, the present invention adopts a technical solution as follows: providing a snap-fit ​​type expandable splicing aluminum alloy heat sink, including two heat sink bodies, and positioning shafts are embedded on the opposite sides of the two heat sink bodies near the corners. The positioning shafts are used to achieve pre-positioning during the splicing process of the two heat sink bodies, and to limit the splicing direction and relative position of the two. A snap-fit ​​assembly is provided through the middle area of ​​the opposite end faces of the two heat sink bodies. The snap-fit ​​assembly can drive the two heat sink bodies to complete the snap-fit ​​connection through an oblique force. Based on the pre-positioning of the positioning shaft and the interlocking of the snap-fit ​​assembly, the heat sinks can be expanded and spliced.

[0006] The present invention is further configured such that: positioning holes are provided on the end faces of the two heat sink bodies near the corners, and multiple positioning shafts are respectively embedded in the interior of multiple sets of corresponding positioning holes.

[0007] By using the above technical solution, the two heat sink bodies can be quickly aligned in the initial stage of splicing through the insertion and cooperation of the positioning shaft and the positioning hole, effectively limiting their lateral displacement and torsion, providing a positioning basis for the accurate engagement of the subsequent snap-fit ​​components, and ensuring splicing accuracy and efficiency.

[0008] The present invention is further configured such that: the buckle assembly includes a horn tube, an elastic ring is fixedly connected to the center of the horn tube, a pull rod is provided through the interior of the elastic ring and passes through both ends of the horn tube, and compression blocks are symmetrically fixedly connected to the outer wall of the pull rod on both sides of the elastic ring, and multiple elastic locking rods are circumferentially fixedly connected to the outer wall of the pull rod near the middle position, and are arranged in two groups, the two groups of elastic locking rods respectively pass through the horn tube and slide, and their ends are engaged with the interior of the heat sink body on both sides.

[0009] Through the above technical solution, by pulling or squeezing the lever to drive the squeezing block to move axially, the elastic ring can be squeezed, causing it to expand radially and push multiple elastic locking rods to extend outward along the inclined guide groove of the horn tube, thereby locking into the corresponding slot of the heat sink body to achieve bidirectional locking; this structure utilizes elastic deformation and inclined guide to achieve single-action drive double-sided locking, which is easy to operate and has a firm connection.

[0010] The present invention is further configured such that: a hidden groove is provided at each corner of the heat sink body, a horn groove is provided in the end face area between the two hidden grooves, and a limiting slide groove is provided near the end face of the horn groove; the horn tube is inserted into the adapter hole formed by the two horn grooves; and a slide bar is symmetrically fixedly connected to the outer wall of the horn tube, and is slidably connected to the limiting slide groove through the slide bar.

[0011] Through the above technical solutions, the hidden groove is used to accommodate the end of the positioning shaft, keeping the appearance flat after splicing; the horn groove provides installation space and guide slope for the horn cylinder, which facilitates the centering and installation of the buckle assembly; the limiting slide groove cooperates with the slide bar to restrict the circumferential rotation of the horn cylinder, ensuring that the elastic clamp can be accurately aligned with the oblique clamp, thus improving the assembly reliability.

[0012] The present invention is further configured such that: the inner arc wall of the horn groove is provided with a plurality of oblique slots adapted to the elastic lever, and the elastic lever is inserted into the inside of the slots by oblique movement.

[0013] Through the above technical solution, the oblique jaw and the oblique movement trajectory of the elastic lever are matched, so that when the lever is subjected to axial tension, the elastic lever can slide into the bottom of the jaw along the oblique surface and form an interference fit, realizing bidirectional mechanical locking and preventing the heat sink from coming off under vibration or thermal stress.

[0014] The present invention is further configured such that the opposing surfaces of the two extrusion blocks are both tapered, which can compress the elastic ring and cause it to deform when the pull rod is driven.

[0015] Through the above technical solution, the conical extrusion block gradually presses the elastic ring during the axial movement of the pull rod, causing it to produce uniform radial elastic deformation, thereby stably pushing out the elastic clamp and locking it into the slot. The conical structure helps to control the extrusion force and deformation process, improving the smoothness of the operation and the service life of the component.

[0016] The present invention is further configured such that end caps are fixedly connected to both ends of the pull rod.

[0017] Through the above technical solution, the end cap facilitates manual or tool-assisted pulling or pushing of the tie rod, while also serving as an axial limiting structure for the tie rod to prevent excessive displacement or detachment from the horn tube, thus ensuring operational safety and the integrity of the mechanism.

[0018] The beneficial effects of this utility model are as follows: 1. The snap-fit ​​expandable splicing aluminum alloy heat sink proposed in this utility model achieves rapid and accurate splicing of the heat sink by pre-positioning the positioning shaft and positioning hole through the insertion of the positioning shaft and positioning hole, and by cooperating with the oblique snap-fit ​​action of the snap-fit ​​component, which effectively improves the installation efficiency and connection reliability. 2. The snap-fit ​​expandable splicing aluminum alloy heat sink proposed in this utility model adopts a structure in which a single pull rod drives the double elastic locking rods to lock synchronously. It utilizes the fixing characteristics of the elastic ring after deformation, which makes the whole operation simple and requires no additional tools. It can realize the modular expansion and repeated disassembly and assembly of the heat sink, and has strong practicality and versatility. Attached Figure Description

[0019] Figure 1 This is a structural diagram of an aluminum alloy heat sink with a snap-fit, expandable splicing mechanism according to the present invention. Figure 2 This is an exploded view of an aluminum alloy heat sink with a snap-fit, expandable splicing mechanism according to the present invention. Figure 3 This is a structural diagram of the end face of an aluminum alloy heat sink with a snap-fit, expandable splicing mechanism according to the present invention. Figure 4 This is a structural diagram of the snap-fit ​​assembly in an expandable, snap-fit ​​aluminum alloy heat sink of the present invention. Figure 5 This is a cross-sectional view of the snap-fit ​​assembly in an expandable aluminum alloy heat sink of this utility model.

[0020] In the diagram: 1. Heat sink; 11. Hidden groove; 12. Speaker groove; 13. Bayonet; 14. Limiting slide groove; 15. Positioning hole; 2. Positioning shaft; 3. Buckle assembly; 31. Speaker tube; 311. Slide bar; 32. Elastic ring; 33. Pull rod; 34. Extrusion block; 35. Elastic locking rod; 36. End cap. Detailed Implementation

[0021] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0022] like Figures 1-4 As shown, a snap-fit, expandable aluminum alloy heat sink includes two heat sink bodies 1. Positioning shafts 2 are embedded near the corners of the opposite faces of the two heat sink bodies 1. The positioning shafts 2 are used for pre-positioning during the splicing process of the two heat sink bodies 1, defining their splicing direction and relative position. Positioning holes 15 are provided near the corners of the end faces of the two heat sink bodies 1. Multiple positioning shafts 2 are respectively embedded inside multiple sets of corresponding positioning holes 15. By utilizing the insertion and engagement of the positioning shafts 2 and the positioning holes 15, the two heat sink bodies 1 can be quickly aligned in the initial stage of splicing, effectively limiting their lateral offset and torsion, providing an alignment basis for the accurate engagement of the subsequent snap-fit ​​assembly 3, and ensuring splicing accuracy and efficiency.

[0023] like Figure 3 and Figure 5 As shown, a snap-fit ​​assembly 3 is provided through the middle area of ​​the opposite end faces of the two heat sink bodies 1. The snap-fit ​​assembly 3 can drive the two heat sink bodies 1 to complete the snap-fit ​​connection through an oblique force. Based on the pre-positioning of the positioning shaft 2 and the engagement of the snap-fit ​​assembly 3, the heat sinks can be expanded and spliced. The snap-fit ​​assembly 3 includes a horn tube 31. An elastic ring 32 is fixedly connected to the center of the horn tube 31. A pull rod 33 is provided through the interior of the elastic ring 32 and passes through both ends of the horn tube 31. A pressing block 34 is symmetrically fixedly connected to the outer wall of the pull rod 33 on both sides of the elastic ring 32. Multiple elastic locking rods 35 are fixedly connected to the outer wall near the middle, and are arranged in two groups. The two groups of elastic locking rods 35 pass through the horn tube 31 and slide, with their ends engaging inside the heat sink body 1 on both sides. By pulling or squeezing the pull rod 33, the squeezing block 34 can be moved axially, which can squeeze the elastic ring 32, causing it to expand radially and push the multiple elastic locking rods 35 outward along the inclined guide groove of the horn tube 31, thereby engaging into the corresponding slots 13 of the heat sink body 1 to achieve bidirectional locking. This structure uses elastic deformation and inclined guide to achieve single-action drive double-sided locking, which is easy to operate and has a firm connection.

[0024] like Figure 3 and Figure 4As shown, hidden grooves 11 are provided at the corners of the heat sink body 1. The hidden grooves 11 are used to accommodate the end of the positioning shaft 2 to keep the appearance flat after splicing. A horn groove 12 is provided in the end face area between the two hidden grooves 11. The horn groove 12 provides installation space and guide slope for the horn tube 31, which facilitates the centering and installation of the buckle assembly 3. A limiting slide groove 14 is provided near the end face of the horn groove 12. The horn tube 31 is inserted into the adapter hole formed by the two horn grooves 12. The outer wall of the horn tube 31 is symmetrically fixedly connected with a slide bar 311, and the slide bar 311 is slidably connected to the limiting slide groove 14. The limiting slide groove 14 cooperates with the slide bar 311 to restrict the circumferential rotation of the horn tube 31, ensuring that the elastic locking rod 35 can be accurately aligned with the oblique locking slot 13, thereby improving the assembly reliability.

[0025] like Figures 3-5 As shown, the inner arc wall of the horn groove 12 is provided with multiple oblique slots 13 that are adapted to the elastic locking rod 35. The elastic locking rod 35 is inserted into the inside of the slot 13 by oblique movement. The oblique slot 13 matches the oblique movement trajectory of the elastic locking rod 35, so that when the pull rod 33 is subjected to axial tension, the elastic locking rod 35 can slide into the bottom of the slot 13 along the oblique surface and form an interference fit, realizing bidirectional mechanical locking and preventing the heat sink from coming off under vibration or thermal stress. The two extrusion blocks 34 are both tapered on their opposite sides. When the pull rod 33 is driven, it can extrude the elastic ring 32 and cause it to deform. During the axial movement of the pull rod 33, the tapered extrusion blocks 34 gradually press the elastic ring 32, causing it to produce uniform radial elastic deformation, thereby stably pushing out the elastic locking rod 35 and locking it into the locking slot 13. The tapered structure helps to control the extrusion force and deformation process, and improves the smoothness of the operation and the service life of the component. Both ends of the pull rod 33 are fixedly connected with end caps 36. The end caps 36 facilitate manual or tool-assisted pulling or pushing of the pull rod 33. At the same time, they serve as an axial limiting structure for the pull rod 33, preventing excessive displacement of the pull rod 33 or its dislodgement from the horn tube 31, thus ensuring operational safety and the integrity of the mechanism.

[0026] In use, the two heat sink bodies 1 are first aligned, and the positioning shaft 2 is inserted into the corresponding positioning hole 15 to complete the pre-positioning. Then, the horn tube 31 is inserted into the adapter hole formed by the horn groove 12 of the two heat sink bodies 1 along the direction of the slide bar 311, ensuring that the slide bar 311 slides into the limiting slide groove 14. Subsequently, the end cap 36 of either end is pulled outward, causing the pull rod 33 to move axially. At this time, the pressing block 34 presses the elastic ring 32, causing it to expand radially, pushing multiple elastic locking rods 35 outward along the inclined guide groove of the horn tube 31, and finally locking into the inclined locking slot 13 on the inner wall of the horn groove 12, realizing the tight locking connection of the two heat sink bodies 1. During disassembly, the pull rod 33 is pushed in the opposite direction, the pressing block 34 is released from the pressing of the elastic ring 32, the elastic locking rods 35 retract, and the heat sink is separated.

[0027] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A snap-fit, expandable aluminum alloy heat sink, comprising two heat sink bodies (1), characterized in that: Positioning shafts (2) are embedded on the opposite sides of the two heat sink bodies (1) near the corners. The positioning shafts (2) are used to pre-position the two heat sink bodies (1) during splicing, and to limit the splicing direction and relative position of the two. A snap-fit ​​assembly (3) is provided through the middle area of ​​the opposite end face of the two heat sink bodies (1). The snap-fit ​​assembly (3) can drive the two heat sink bodies (1) to complete the snap-fit ​​connection through the oblique force. Based on the pre-positioning of the positioning shaft (2) and the engagement of the snap-fit ​​assembly (3), the heat sink can be expanded and spliced.

2. The snap-fit, expandable, splicing aluminum alloy heat sink according to claim 1, characterized in that: The two heat sink bodies (1) are provided with positioning holes (15) near the corners of their end faces, and the multiple positioning shafts (2) are respectively embedded in the interior of multiple sets of corresponding positioning holes (15).

3. The snap-fit, expandable, splicing aluminum alloy heat sink according to claim 1, characterized in that: The buckle assembly (3) includes a horn tube (31). An elastic ring (32) is fixedly connected to the center of the horn tube (31). A pull rod (33) is provided through the interior of the elastic ring (32), and the pull rod (33) passes through both ends of the horn tube (31). A pressing block (34) is symmetrically fixedly connected to the outer wall of the pull rod (33) on both sides of the elastic ring (32). A plurality of elastic locking rods (35) are fixedly connected to the outer wall of the pull rod (33) near the middle position, and are arranged in two groups. The two groups of elastic locking rods (35) pass through the horn tube (31) and slide, and their ends are engaged with the interior of the heat sink body (1) on both sides.

4. The snap-fit, expandable, splicing aluminum alloy heat sink according to claim 3, characterized in that: Hidden grooves (11) are provided at the corners of the heat sink body (1). A horn groove (12) is provided in the end face area between the two hidden grooves (11). A limiting slide groove (14) is provided near the end face of the horn groove (12). The horn tube (31) is inserted into the adapter hole formed by the two horn grooves (12). A slide bar (311) is symmetrically fixedly connected to the outer wall of the horn tube (31), and is slidably connected to the limiting slide groove (14) through the slide bar (311).

5. The snap-fit, expandable, splicing aluminum alloy heat sink according to claim 4, characterized in that: The inner arc wall of the horn groove (12) is provided with a plurality of oblique slots (13) that are adapted to the elastic lever (35). The elastic lever (35) is inserted into the slot (13) by oblique movement.

6. The snap-fit, expandable, splicing aluminum alloy heat sink according to claim 5, characterized in that: The two extrusion blocks (34) are both tapered on their opposite sides, which can compress the elastic ring (32) and deform it when the pull rod (33) is driven.

7. The snap-fit, expandable, splicing aluminum alloy heat sink according to claim 6, characterized in that: Both ends of the pull rod (33) are fixedly connected with end caps (36).

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