CN2558080Y

CN2558080Y - Back board fixing device

Info

Publication number: CN2558080Y
Application number: CN 02270876
Authority: CN
Inventors: 李济民
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2002-06-04
Filing date: 2002-06-04
Publication date: 2003-06-25
Anticipated expiration: 2012-06-04

Abstract

The utility model discloses a backboard fixing device, which comprises a backboard, four locking solids and four elastic fasteners. Wherein, the four corners of the backboard are provided with perforations, and the center is provided with a conflicting part. The locking body includes a mortise cap and a mortise post. The mortise post is a cylinder, and an internal thread for screw locking is formed inside the upper part; the middle part shrinks inward to form a groove with a smaller cross-section; the lower part is connected to the tenon cap . The elastic fastener is roughly in the shape of a circular platform with a shaft hole in the center and a bevel on the edge. An opening is provided on the wall of the circular platform, so that it forms an open-loop structure and can be sleeved on the middle section of the mortise post, and passes through the upper and lower cylinders. Body snap positioning fasteners. The backboard fixing device can fix the backboard under the main board, and can sequentially fix the back board, the main board and the radiator together.

Description

The backboard fixture

[technical field]

The utility model is about a kind of backboard fixture, particularly about a kind of backboard fixture that adopts sheathed spring secures rail to sleeper on the locking body.

[technical background]

Along with being doubled and redoubled of computer chip operating frequency, its caloric value also increases gradually, thereby the radiating requirements of chip is further improved.Industry will prolong always that the radiator of usefulness is corresponding has made adjustment, do its volume more big so that more timely and effective heat radiation and guarantee the operate as normal of computer chip.Yet the radiator that will install this kind larger volume is on fixed structure (being equiped with the CPU Socket of CPU), and the supporting module that needs larger volume is with its fixing, and this has strengthened the difficulty that manufactures and designs of motherboard undoubtedly, and manufacturing process is numerous and diverse.Thereby the design that industry is introduced backboard again is installed in the motherboard back side with backboard by locking body to reinforce motherboard, and simultaneously by the cooperating of screw and locking body, supporting module can be locked on motherboard.This kind mode is fixed on radiator on the supporting module by Elastic buckle spare after at first need clamping motherboard by accessories such as supporting module, backboard and screws again.But this kind mode required component is too much, comprises radiator, supporting module, Elastic buckle spare, backboard and screw etc., and assembling process is comparatively loaded down with trivial details, wastes time and energy.

[summary of the invention]

The purpose of this utility model is to provide a kind of simple in structure, backboard fixture that chucking power is strong of using spring secures rail to sleeper that pressure at right angle is transferred to horizontal force and radiator, motherboard and backboard can be fixed together.

The purpose of this utility model is achieved through the following technical solutions: the utility model backboard fixture comprises a backboard, four locking bodies and four spring secures rail to sleepers.Wherein, four jiaos of ends of this backboard are provided with perforation, and the center is provided with the contact part.Locking body comprises a tenon cap and a tenon post, and this tenon post is a cylinder, and intersegmental part forms and can supply the internal thread of screw locking on it; The stage casing inwardly is shrunk to the less groove of cross section; Its hypomere joint tongue cap.Spring secures rail to sleeper roughly is a center and is provided with the round table-like of an axis hole and formation inclined-plane, edge, and this round platform wall is provided with an opening, also can be set on the tenon post stage casing thereby make it form an open loop structure, and by last hypomere cylinder engaging location fastener.This backboard fixture can set firmly backboard below motherboard, and can successively backboard, motherboard, radiator three be fixed together.

Compared with prior art, the utility model a kind ofly is equiped with the backboard fixture of spring secures rail to sleeper and backboard, motherboard, radiator can be fixed together by adopting on locking body, and it is convenient to have mounting or dismounting in fact, advantage of simple structure.

[description of drawings]

With reference to the accompanying drawings, in conjunction with the embodiments the utility model is further described.

Fig. 1 is the three-dimensional exploded view of the utility model backboard fixture.

Fig. 2 is the three-dimensional exploded view of the utility model backboard fixture and associated component.

Fig. 3 A, 3B, 3C are respectively the assembling process schematic diagrames that the locking body of the utility model backboard fixture wears motherboard.

Fig. 4 is that the utility model backboard fixture user mode is with reference to side view cutaway drawing.

[embodiment]

See also Fig. 1, the utility model backboard fixture 1 comprises a backboard 10, four locking bodies 20 and four spring secures rail to sleepers 30, and it can be fixed on backboard 10 below of motherboard 50, and can lock radiator 40 on the central processing unit 60 of motherboard 50.

This backboard 10 is a thermal conductivity preferred metal plate, and its four jiaos of ends are provided with perforation 12, and its central authorities convex with a contact part 14, and the outer surface of this contact part 14 is covered with insulating material.

Each locking body 20 has a tenon cap 22 and by the tenon post 24 of tenon cap 22 to side extension, this tenon post 24 is one can be divided into the cylinder of epimere 25, stage casing 27 and hypomere 29, the cross-sectional area that this epimere 25 and hypomere 29 have identical size, stage casing 27 is for inwardly being shrunk to the less groove of cross section; These epimere 25 centers are provided with blind hole, and the internal face of this blind hole is provided with one and can supplies screw wear the internal thread 23 of locking; These hypomere 29 bottoms and tenon cap 22 join.

Each spring secures rail to sleeper 30 roughly is a center and is provided with the round table-like of an axis hole 32 and formation inclined-plane, edge, this round platform wall is provided with an opening 34, the diameter of this axis hole 32 can match with stage casing 27 grooves of tenon post 24, this opening 34 makes 30 one-tenth one open loop structures of spring secures rail to sleeper and can make on its stage casing that is set in locking body 20 27 grooves, and locatees spring secures rail to sleeper 30 by the cylinder engaging than big cross section of last hypomere 25,29.

When assembling this backboard fixture 1, first tenon post 24 with locking body 20 passes the perforation 12 on the backboard 10 from bottom to top, and the perforation 12 peripheries install pad additional, and then punch riveting tenon cap 22 the perforation 12 in with locking body 20 riveteds on this backboard 10, thereafter, the opening 34 that pulls open spring secures rail to sleeper 30 can be distinguished sheathed spring secures rail to sleeper 30 on 27 grooves of the stage casing of locking body 20, and spring secures rail to sleeper 30 than small end face section 25 directions upwards, thereby each component groups of this backboard fixture 1 is dressed up one (as shown in Figure 2).

See also Fig. 2 and Fig. 3 A, 3B, 3C, when using this backboard fixture 1, the epimere 25 of the locking body 20 tenon posts 24 of this backboard fixture 1 is passed correspondence perforation 52 set on the motherboard 50, at this moment, press down motherboard 50 and make sheathed spring secures rail to sleeper 30 outside its these tenon post 24 stage casings 27 of conflicting, continue to press down motherboard 50, the round platform of this spring secures rail to sleeper 30 is because of stressed and by its inclined-plane, and pressure at right angle is changed into horizontal force, this annulus is shunk to its opening 34 places, and then make spring secures rail to sleeper 30 pass motherboard 50 and make motherboard 50 be positioned at tenon post 24 hypomeres 29 of locking body 20, and closely conflict with the contact part 14 on this backboard 10.At last, this spring secures rail to sleeper 30 opens by its elasticity and engages motherboard 50, makes this backboard 10 be fixed on the below of motherboard 50.

See also Fig. 4, install the installation diagram of radiator 40 additional for the motherboard 50 of installing backboard fixture 1, the perforation 42 corresponding locking bodies 20 of 40 4 jiaos in radiator can be placed, and wear perforation by a screw and 42 lock on the internal thread 23 of locking body 20, radiator 40, motherboard 50 and backboard 10 can be fixed together thus.

This backboard fixture structure is simple, when the assembling radiator, can save supporting module and Elastic buckle spare, and the succinct easily row of assembling process.Simultaneously, this backboard fixture also can be applicable to combining of radiator and other circuit board, and the effect that is reached is also identical.

Claims

1. A backboard fixing device, which can be integrally fixed with the circuit board, and can fix the heat sink on the electronic chip of the circuit board, which includes a backboard, some locking bodies and some elastic fasteners fixed on the corner ends of the backboard, It is characterized in that: each locking body has a tenon cap and a tenon post, and the middle section of the tenon post shrinks inwardly to form a groove with a smaller cross section; each elastic fastener is provided with a shaft hole in the center and an inclined plane on the edge It is in the shape of a circular platform, and an opening is provided on the wall of the circular platform, so that the circular platform forms an open-loop structure and can be sleeved on the middle section of the locking body.

2. The backboard fixing device according to claim 1, wherein the backboard is a metal plate with better thermal conductivity.

3 . The backboard fixing device according to claim 2 , wherein the backboard is provided with perforations at the corners, and the center is protruded with a resisting portion covered with an insulating material. 4 .

4 . The backboard fixing device according to claim 3 , wherein the locking body passes through the perforation of the backboard and is riveted on the backboard by punching to form a whole.

5. The backboard fixing device according to claim 4, characterized in that: the inside of the upper section of the mortise post of the locking body forms an internal thread for screw locking, the lower section is connected with the tenon cap, and the upper section and the lower section have a cross-sectional area of the same size.

6 . The backboard fixing device according to claim 5 , wherein the elastic fastener is buckled on the middle section of the mortise post of the locking body and is locked and positioned by the upper and lower sections of the mortise post. 7 .