TWM572626U - Heat dissipation device - Google Patents

Abstract

A heat dissipation device includes a body, a first locking member, and a second locking member locked with the first locking member. The body has a through hole. The first locking member includes a first limiting block and a first threaded portion connected to the first limiting block and inserted into the through hole. The second locking member includes a connecting portion, a second limiting block, and a threaded part. The connecting portion has a second threaded portion, and the connecting portion is inserted into the through hole, so that the first threaded portion is threaded with the second threaded portion. An outer diameter of the first limiting block and an outer diameter of the second limiting block are greater than an outer diameter of the connecting portion, and the body is located between the first limiting block and the second limiting block.

Description

Heat sink

This creation relates to the structure of a heat sink, and in particular to a heat sink suitable for a circuit board.

The heat sink can be assembled on the motherboard, and the M.2 expansion card, the chip (such as the CPU) and other components on the motherboard are dissipated to prevent the wafer or the component from being damaged due to high temperature. Among the commercially available heat sinks, one design is to be screwed to the motherboard, so that the heat sink can be firmly fixed to the motherboard.

However, in this design, the screw assembly and the heat sink of the heat sink are separate components. Therefore, it is necessary to align the screw assembly with the opening on the heat sink and the fixing post on the main board before installation, and the problem of falling parts is easy to occur, resulting in inconvenience.

In view of the above problems, the present invention proposes a heat sink. In one embodiment, the heat sink includes a heat sink body, a first lock, and a second lock that is locked to the first lock. The heat dissipation body has a through hole. The first lock body includes a first stop block and a first threaded portion that connects the first stop block and penetrates the through hole. The second lock fastener includes a joint portion, a second stopper block that connects the joint portion, and a screw portion that connects the second stopper block. The engaging portion has a second threaded portion, and the engaging portion penetrates the through hole such that the first threaded portion and the second threaded portion are interlocked with each other. The outer diameter of the first stop block and the second stop block is larger than the outer diameter of the joint portion, and the heat dissipation body is located between the first stop block and the second stop block.

In one or more embodiments, the threaded portion has a third threaded portion to interlock with the substrate. Specifically, the third threaded portion may be interlocked with the fourth threaded portion of the fixing post of the substrate. The friction torque generated by the first thread portion and the second thread portion is greater than the friction torque generated by the third thread portion and the fourth thread portion. Wherein, the first threaded portion and the third threaded portion are externally threaded portions, and the diameter of the first threaded portion is greater than the diameter of the third threaded portion.

In one or more embodiments, the screw portion is a cylinder and has a third thread portion to interlock with the substrate. Specifically, the third threaded portion can be interlocked with the fourth threaded portion of the substrate. The friction torque generated by the first thread portion and the second thread portion is greater than the friction torque generated by the fourth thread portion and the third thread portion. Wherein, the first threaded portion is an externally threaded portion, and the third threaded portion is an internal threaded portion, and the diameter of the first threaded portion is larger than the diameter of the third threaded portion.

In one or more embodiments, the distance between the first stop block and the second stop block is greater than the hole length of the through hole.

In one or more embodiments, the top surface of the first blocking block has a first operating portion for the user to lock the first locking member to the second locking member by operating the first operating portion with the tool, and The heat sink can be further locked to the substrate.

In one or more embodiments, the periphery of the second stop block forms a second operating portion for the user to secure the second operating portion with the tool to separate the second locking member from the first locking member.

Therefore, the heat dissipating device provided by one or more embodiments of the present invention is configured to movably fix the locking component to the heat dissipating body. Therefore, it is only necessary to align the locking component of the heat sink to the corresponding locking position on the substrate after assembly, thereby improving assembly speed and convenience. In addition, in some embodiments, since the distance between the first stopper and the second stopper is greater than the thickness of the heat dissipation body, when the heat dissipation device is assembled to the substrate, the heat dissipation can be performed by adjusting each of the locking components. The device is assembled horizontally to the substrate such that each locking assembly is subjected to the same amount of stress.

Please refer to FIG. 1 to FIG. 4 , which is a heat dissipation device 100 according to an embodiment of the present invention. As shown in FIGS. 1 to 4, the heat sink 100 is used for, but not limited to, assembly on a substrate 900, as shown in FIG. The aforementioned substrate 900 can be a circuit board (such as but not limited to a motherboard) or a reinforced backplane fixed to the circuit board. When the substrate 900 is a circuit board, the substrate 900 is provided with electronic components (for example, processing wafers, etc.). The heat sink 100 is used to quickly dissipate the heat generated by the operation of the electronic components without affecting the operational efficiency of the electronic components. In this embodiment, the heat dissipation device 100 includes a heat dissipation body 20 and a plurality of locking components, and each of the locking components includes a first locking component 30 and a second locking component 40. For convenience of explanation, the following content is only described with the heat dissipation body 20 and a locking component.

Referring to FIG. 1 to FIG. 3 , the heat dissipation body 20 has a through hole 21 for the first lock 30 and the second lock 40 to penetrate and lock each other. For example, the heat dissipation body 20 may be a heat sink, and the heat sink may have different thicknesses in different regions, and is not limited thereto. In the present embodiment, the heat dissipation body 20 has a top surface 20a and a bottom surface 20b, and the through hole 21 penetrates from the top surface 20a to the bottom surface 20b.

Referring to FIGS. 1 to 3 , the first lock 30 includes a first stop block 31 and a first threaded portion 32 that connects the first stop block 31 and penetrates the through hole 21 . In one or more embodiments, the top surface 311 of the first blocking block 31 has a first operating portion 312 for the user to lock the first locking member 30 to the second locking member 40 by means of a tool and to dissipate heat. Device 100 can be further locked to substrate 900. In other words, the first locking member 30 can be a screw, and the first stopping block 31 is the front end of the screw and the first threaded portion 32 is the tail end of the screw. Further, the first operating portion 312 can be a screw. The tooth is inserted into the screwdriver to complete the aforementioned operation. Therefore, in the present embodiment, the first operating portion 312 is a cross-shaped groove, but is not limited thereto; the first operating portion 312 may also be various types of grooves (such as, but not limited to, a rice word, a Word, triangle) and can be inserted into various types of screwdrivers.

Referring to FIGS. 1 to 3 , the second lock 40 includes an engaging portion 41 , a second stopper 42 that connects the joint portion 41 , and a screw portion 43 that connects the second stopper 42 . The engaging portion 41 has the second threaded portion 411 and the engaging portion 41 penetrates into the through hole 21 such that the first threaded portion 32 of the first locking member 30 and the second threaded portion 411 of the second locking member 40 can be interlocked with each other. Moreover, the outer diameter L1 of the first blocking block 31 and the outer diameter L2 of the second blocking block 42 are larger than the outer diameter L3 of the engaging portion 41, so that the first locking member 30 and the second locking member 40 are coupled to be movable. The ground block is fixed to the heat dissipation body 20 such that the first stop block 31 corresponds to the top surface 20a and the second stop block 42 corresponds to the bottom surface 20b. In other words, the heat dissipation body 20 can be positioned between the first stop block 31 and the second stop block 42.

In one or more embodiments, the periphery of the second blocking block 42 forms a second operating portion 421 for the user to fix the second operating portion 421 with the tool to lock the second locking member 40 with the first locking member 30. Interlock or separate from each other. The second operating portion 421 can be square, hexagonal, octagonal, quincunx, etc., and can be applied to various wrenches or clamps. Thereby, after the user fixes the second operating portion 421, the tool is inserted into the first operating portion 312 and rotated clockwise or counterclockwise to achieve the lock between the first locking member 30 and the second locking member 40. Connect or separate.

Referring to FIGS. 1 to 3 , the screwing portion 43 is used to lock the substrate 900 to each other, thereby achieving the function of fixing the heat sink 100 to the substrate 900 . Specifically, as shown in FIGS. 1 to 4, in one or more embodiments, the screw portion 43 has a third thread portion 431, and the fixing post 901 on the substrate 900 has a fourth thread portion so that the screw portion The fixing member 901 can be interlocked with the fixing post 901 to fix the heat sink 100 to the substrate 900. In this embodiment, the first threaded portion 32 and the third threaded portion 431 are both externally threaded portions, and the diameter D1 of the first threaded portion 32 can be greater than the diameter D2 of the third threaded portion 431; that is, the first The frictional torque generated by the threaded portion 32 and the second threaded portion 411 is greater than the frictional torque generated by the third threaded portion 431 and the fourth threaded portion. Therefore, if the heat sink 100 is to be detached from the substrate 900, the third thread portion 431 and the fourth thread portion having a small friction torque can be separated without the first thread portion 32 and the second having a large friction torque. The threaded portions 411 are separated. Specifically, in the present embodiment, the first screw portion 32 has a frictional torque of 3 to 2.5 N·m, and the third threaded portion 431 has a frictional torque of 2 to 1.5 N·m.

However, the manner in which the heat sink 100 and the substrate 900 of the present invention are assembled is not limited to the foregoing. Please refer to FIG. 5. FIG. 5 is an exploded view of another embodiment of the locking assembly of the embodiment of the heat sink 100 of the present invention. As shown in FIG. 5, in this embodiment, the screwing portion 43' of the second locking member 40 is a cylinder and has a third threaded portion 431', and the fixing column of the substrate 900 protrudes from the fourth thread. The portion (not shown) allows the screw portion 43' to be coupled to the substrate 900 to fix the heat sink 100 to the substrate 900. In addition, in the embodiment, the first threaded portion 32 is an externally threaded portion, and the third threaded portion 431' is an internally threaded portion, and the diameter D1 of the first threaded portion 32 is greater than the diameter D3 of the third threaded portion 431'. . That is, the frictional torque generated by the first threaded portion 32 and the second threaded portion 411 is greater than the frictional torque generated by the fourth threaded portion and the third threaded portion 431'. Therefore, if the heat sink 100 is to be detached from the substrate 900, the fourth thread portion and the third thread portion 431' having a small friction torque can be separated without the first thread portion 32 having a large friction torque. The two threaded portions 411 are separated. Specifically, in the present embodiment, the first screw portion 32 has a frictional torque of 3 to 2.5 N·m, and the third threaded portion 431' has a frictional torque of 2 to 1.5 N·m.

In the foregoing embodiment, the first threaded portion 32 is an externally threaded portion, and the second threaded portion 411 is an internally threaded portion, but the present invention is not limited thereto. In one or more embodiments, the first threaded portion may be an internal threaded portion, and the second threaded portion may be an externally threaded portion, such that the first locking member 30 and the second locking member 40 may be interlocked with each other, and no further description is provided. .

In one or more embodiments, the distance D4 between the first stop block 31 and the second stop block 42 is greater than the hole length L4 of the through hole 21. In other words, the distance D4 between the first stop block 31 and the second stop block 42 is greater than the thickness of the heat dissipation body 20. In addition, in the present embodiment, the aperture of the through hole 21 is slightly larger than the outer diameter L3 of the joint portion 41, so that the aforementioned locking assembly can smoothly move in the vertical direction with respect to the heat dissipation body 20. Specifically, in the present embodiment, the difference between the aforementioned distance D4 and the hole length L4 may be between 0.15 mm and 0.2 mm. Furthermore, in the present embodiment, the cross-section of the through hole 21 and the joint portion 41 are substantially circular, so that the aforementioned locking assembly can smoothly rotate relative to the heat dissipation body 20. As such, if the heat dissipating device 100 is to be assembled to the substrate 900, the locking assembly can be moved relative to the heat dissipating body 20 due to the foregoing configuration, and the locking assembly can be aligned with the corresponding locking position on the substrate 900 (ie, the fixing post 901). So that the heat sink 100 can be horizontally mounted on the substrate 900, but the creation is not limited thereto; in another embodiment, between the first stop block 31 and the second stop block 42 The distance D4 can be approximately equal to the hole length L4 of the through hole 21. That is to say, after the first locking member 30 is combined with the second locking member 40, the heat dissipating body 20 can be fixed such that the first stopping block 31 abuts against the top surface 20a and the second stopping block 42 abuts against the bottom surface 20b.

In addition, the substrate 900 may further include a light emitting element, and the light of the light emitting element may be laterally scattered through the gap between the substrate 900 and the heat sink 100. Since the heat dissipating device 100 can be horizontally assembled on the substrate 900 by the locking component, the light emitted from the gap is relatively uniform, thereby providing a better light guiding effect.

Therefore, the heat dissipating device provided by one or more embodiments of the present invention is configured to movably fix the locking component to the heat dissipating body. Therefore, it is only necessary to align the locking component of the heat sink to the corresponding locking position on the substrate after assembly, thereby improving assembly speed and convenience. In addition, in some embodiments, since the distance between the first stopper and the second stopper is greater than the thickness of the heat dissipation body, when the heat dissipation device is assembled to the substrate, the heat dissipation can be performed by adjusting each of the locking components. The device is assembled horizontally to the substrate such that each locking assembly is subjected to the same amount of stress.

100‧‧‧heating device

20‧‧‧Solution body

20a‧‧‧ top

20b‧‧‧ bottom

21‧‧‧through hole

30‧‧‧First lock firmware

31‧‧‧First stop block

311‧‧‧ top surface

312‧‧‧First Operation Department

32‧‧‧First threaded part

40‧‧‧Second lock firmware

41‧‧‧ joints

411‧‧‧Second thread

42‧‧‧second stop block

421‧‧‧Second Operations Department

43, 43’‧‧‧ Threading Department

431‧‧‧ Third thread

431'‧‧‧ Third thread

900‧‧‧Substrate

901‧‧‧ fixed column

D1, D2‧‧‧ diameter

L1, L2, L3‧‧‧ outer diameter

D3‧‧‧ aperture

D4‧‧‧ distance

L4‧‧‧ Kong Chang

1 is an exploded view of an embodiment of the heat sink of the present invention. FIG. 2 is an assembled view of an embodiment of the heat sink of the present invention. 3 is a schematic cross-sectional view showing an embodiment of the heat sink of the present invention. FIG. 4 is a schematic view showing the state of use of an embodiment of the heat sink of the present invention. Figure 5 is an exploded view of another embodiment of the locking assembly of an embodiment of the present heat sink.

Claims (10)

A heat dissipating device includes: a heat dissipating body having a through hole; a first locking member comprising: a first stopping block; and a first threaded portion connecting the first stopping block, the first threaded portion is worn And a second locking member, comprising: a joint portion having a second threaded portion, the engaging portion penetrating the through hole, such that the first threaded portion and the second threaded portion are interlocked with each other; a second stop block connecting the joint portion; and a screwing portion connecting the second stop block; wherein an outer diameter of the first stop block and the second stop block is larger than an outer diameter of the joint portion The heat dissipation body is located between the first stop block and the second stop block. The heat sink of claim 1, wherein the screw portion has a third threaded portion for interlocking with a fourth threaded portion of a substrate. The heat sink according to claim 2, wherein the frictional torque generated by the first threaded portion and the second threaded portion is greater than the frictional torque generated by the third threaded portion and the fourth threaded portion. The heat dissipating device of claim 2, wherein the first threaded portion and the third threaded portion are externally threaded portions, and the diameter of the first threaded portion is greater than the diameter of the third threaded portion. The heat dissipating device of claim 1, wherein the screwing portion is a cylinder and has a third threaded portion for interlocking with a fourth threaded portion of a substrate. The heat dissipating device of claim 5, wherein the frictional torque generated by the first threaded portion and the second threaded portion is greater than the frictional torque generated by the fourth threaded portion and the third threaded portion. The heat dissipating device of claim 5, wherein the first threaded portion is an externally threaded portion, the third threaded portion is an internally threaded portion, and the diameter of the first threaded portion is greater than the diameter of the third threaded portion. The heat dissipation device of claim 1, wherein a distance between the first stop block and the second stop block is greater than a hole length of the through hole. The heat dissipating device of claim 1, wherein the top surface of the first blocking block has a first operating portion. The heat dissipating device of claim 1, wherein the periphery of the second blocking block forms a second operating portion.