CN217644093U

CN217644093U - Screw rod structure and radiator fixing structure

Info

Publication number: CN217644093U
Application number: CN202221272603.3U
Authority: CN
Inventors: 吴学军; 唐勇锋; 杨红明
Original assignee: New H3C Technologies Co Ltd Hefei Branch
Current assignee: New H3C Technologies Co Ltd Hefei Branch
Priority date: 2022-05-25
Filing date: 2022-05-25
Publication date: 2022-10-21
Anticipated expiration: 2032-05-25

Abstract

The application provides screw rod structure and radiator fixed knot construct, wherein screw rod structure, including the stud head and the screw rod that is connected with the stud head, the screw rod divide into two sections, and the diameter of first section screw rod is greater than the diameter of second section screw rod and first section screw rod is continuous the stud head is equipped with first screw thread on the first section screw rod, and second section screw rod is equipped with the second screw thread. The utility model discloses screw rod simple structure, the installation is reliable, and it is easy to dismantle. The screw structure keeps stable to the buckling force of the chip when being installed on the radiator, has good radiating effect and occupies small space of the whole radiator.

Description

Screw rod structure and radiator fixing structure

Technical Field

The present disclosure relates to mechanical connection structures, and particularly to a screw structure and a heat sink fixing structure.

Background

Under the high performance requirement of the existing electronic equipment, the chip of the equipment has large power consumption and large heat dissipation capacity, and a radiator or even a fan is required to carry out forced heat dissipation. Conventional heat sinks are shown in fig. 1-4, and primarily have adhesive and spring pin/screw attachment forms, which require larger heat sink sizes as power consumption increases.

Disclosure of Invention

In order to overcome the problems existing in the related art, the application provides a screw structure and a radiator fixing structure.

This application embodiment screw rod structure, including the stud head and the screw rod that is connected with the stud head, the screw rod divide into two sections, and the diameter of first section screw rod is greater than the diameter of second section screw rod and first section screw rod is even spiral shell 5T stud, is equipped with first screw thread on the first section screw rod, and second section screw rod is equipped with the second screw thread.

Preferably, the first thread is adjacent the stud head and the second thread is adjacent the end of the second screw.

This application radiator fixed knot constructs, including radiator, chip and PCB board, place the chip on the PCB board, the radiator setting is in the top of chip, including above-mentioned screw rod structure, radiator and PCB board are equipped with first counter bore and second counter bore respectively, and screw rod structure is connected the radiator through first counter bore and second counter bore and is fixed to the PCB board.

Preferably, a first nut is arranged in the first counter bore, and a first thread of the first section of screw rod is connected with the first nut and arranged in the heat radiator.

Preferably, a second nut is arranged in the second counter bore, and a second thread of the second section of screw rod is connected with the second nut and arranged in the PCB.

Preferably, a nut pressing plate is arranged on one side, facing the PCB, of the first counter bore of the radiator, and the nut pressing plate abuts against the first nut and is fixed through a fixing screw.

Preferably, a stop retainer ring is arranged at the joint of the first section of screw and the second section of screw.

Preferably, the heat sink is connected with the PCB board by spring screws.

The technical scheme provided by the embodiment of the application can have the following beneficial effects:

the screw rod has simple structure, reliable installation and easy disassembly. The screw structure keeps stable to the buckling force of the chip when being installed on the radiator, has good radiating effect and occupies small space of the whole radiator.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments consistent with the present application and together with the application, serve to explain the principles of the application.

FIGS. 1-4 illustrate a heat sink and its mounting structure of the prior art;

FIG. 5 is a schematic view of the screw configuration of the present application;

FIG. 6 is a schematic view of a heat sink mounting structure according to the present application;

fig. 7 is a partial enlarged view of fig. 6 a of the present application.

Reference numerals:

1-screw structure 11-stud head 12-first section screw 121-first thread 13-second section screw 131-second thread 2-radiator 21-first counter bore 3-chip 4-PCB 41-second counter bore 5-spring screw 6-stop retainer ring 7-first nut 8-nut pressure plate 9-second nut 10-fixing screw

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application, as detailed in the appended claims.

In order to solve the problems in the background art, the embodiment of the present application provides a screw structure, as shown in fig. 5, including a stud head 11 and a screw, where the head of the stud 11 is connected to one end of the screw, and the stud head may be circular, hexagonal, etc. The screw is divided into two sections, the diameter of the first section of screw 12 is larger than that of the second section of screw 13, the first section of screw 12 is connected with the stud head 11, the first section of screw 12 is provided with a first thread 121, and the second section of screw 13 is provided with a second thread 131. The first thread 121 and the second thread 131 can be respectively arranged on different parts of the first section of screw 12 and the second section of screw 13 according to the installation requirement in use. Such as the end portions, the middle portion, or the entirety. As a preferred embodiment of the present application, the first thread is adjacent to the stud head and the second thread is adjacent to the end of the second screw. This enables a stable screw connection when fixing the heat sink and the PCB board.

The present application further provides a heat sink fixing structure, as shown in fig. 6 and 7, which includes not only the screw structure in the above embodiment, but also the heat sink 2, the chip 3 and the PCB 4. The chip 3 is placed on the PCB 4, and the radiator 2 is arranged above the chip 3 and used for radiating the chip. A first counterbore 21 and a second counterbore 41 are provided in the heat sink 2 and the PCB board 4, respectively. The screw structure fixes the heat sink 2 to the PCB board 4 through the first counterbore 21 and the second counterbore 41. Under the gravity of the radiator, the buckling force on the chip is good, and the installation is stable. The first counterbore 21 and the second counterbore 41 may be engaged by nuts, or may be engaged by other means, such as interference fit. In the embodiment of the present application, the first nut 7 is disposed in the first counterbore 21, and the first thread 121 of the first section of screw 12 is connected with the first nut 7 and disposed in the heat sink 2. A second nut 9 is arranged in the second counter bore 41, and the second thread 131 of the second section of screw 13 and the second nut 9 are connected in the PCB 4. The first nut can be a square nut or a hexagon nut, and specific selection is determined according to the installation position.

As a preferred embodiment of the above embodiment, as shown in fig. 7, the side of the first counterbore 21 of the heat sink 2 facing the PCB 4 is provided with a nut pressing plate 8, and the nut pressing plate 8 against the first nut 7 should be fixed by a fixing screw 10. The nut pressing plate can be pressed on the radiator, a hole communicated with the first counter bore can be further formed in the radiator, and the nut pressing plate is placed in the hole. Therefore, the nut pressing plate is easier to position when being installed and fixed.

As a preferred embodiment, as shown in fig. 7, a stop collar 6 is provided at the joint of the first section screw 12 and the second section screw 13, and the stop collar may be a circular ring made of metal or plastic. The first screw rod and the second screw rod of different diameters can be matched with radiators with different apertures through the stop retainer ring, so that the radiators are fixed with the PCB.

As a preferred embodiment, as shown in fig. 6, the connection between the heat sink 2 and the PCB board 4 is by means of spring screws 5. The spring screw and the spring have an adjusting function, and the double buckling force of the radiator and the spring screw is exerted on the chip due to the reverse acting force of the spring. In the process of installing and fixing the radiator, a spring screw needs to be installed firstly, and then a screw rod structure needs to be locked. The relative position of the heat radiator with large mass and the chip is ensured.

According to the radiator fixing structure, the radiator is stable relative to the buckling force of the chip, so that the influence of the radiator on the buckling force of the chip in vibration and impact environments is reduced.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims

1. The screw structure comprises a stud head and a screw connected with the stud head, and is characterized in that the screw is divided into two sections, the diameter of the first section of screw is larger than that of the second section of screw, the first section of screw is connected with the stud head, a first thread is arranged on the first section of screw, and a second thread is arranged on the second section of screw.

2. The screw construction of claim 1, wherein the first thread is adjacent the stud head and the second thread is adjacent an end of the second screw.

3. The radiator fixing structure comprises a radiator, a chip and a PCB, wherein the chip is placed on the PCB, and the radiator is arranged above the chip, and the radiator fixing structure is characterized by comprising the screw structure of any one of claims 1 or 2, the radiator and the PCB are respectively provided with a first counter bore and a second counter bore, and the screw structure is used for connecting and fixing the radiator to the PCB through the first counter bore and the second counter bore.

4. The heat sink fixing structure according to claim 3, wherein a first nut is disposed in the first counterbore, and the first thread of the first section of screw is connected with the first nut and disposed in the heat sink.

5. The heat sink fixing structure according to claim 3 or 4, wherein a second nut is disposed in the second counterbore, and a second thread of the second screw is connected with the second nut and disposed in the PCB.

6. The heat sink fixing structure of claim 4, wherein a nut pressing plate is disposed on a side of the first counterbore of the heat sink facing the PCB, and the nut pressing plate abuts against the first nut and is fixed by a fixing screw.

7. The heat sink fixing structure as claimed in claim 3, wherein a stop collar is provided at a connection of the first section of screw and the second section of screw.

8. The heat sink fixing structure according to claim 3, wherein the heat sink and the PCB are connected by spring screws.