CN201133407Y

CN201133407Y - Elastic fastener

Info

Publication number: CN201133407Y
Application number: CNU200720183435XU
Authority: CN
Inventors: 郑家俊
Original assignee: Cooler Master Co Ltd
Current assignee: Kaichuang Research Co Ltd
Priority date: 2007-10-25
Filing date: 2007-10-25
Publication date: 2008-10-15
Anticipated expiration: 2017-10-25

Abstract

The utility model relates to an elastic buckle which is used to fix radiator and other devices on a circuit board and includes a fixed element, a cylindrical post and an elastic element, wherein, the fixed element is provided with a head and a fixed section; a convex ring is shaped on one side of the fixed section; the cylindrical post is made of non-conductive material and provided with a hollow hole for the fixed element to go through; a snap ring extends inwards to the cylindrical post; the snap ring and the convex ring are mutually snapped and connected; both ends of the elastic element are respectively elastically clamped between the head and the cylindrical post; in this way, the non-conductive characteristic of the cylindrical post can prevent the circuit board from contacting the radiator and other devices and short-circuit phenomenon therein; what is more, the elasticity of the elastic element can prevent too large force of fixing the radiator and other devices on the circuit board and damage of the circuit board produced therein.

Description

Elastic fastener

Technical field

The utility model relates to a kind of elastic fastener, is meant especially a kind of devices such as radiator to be fixed on elastic fastener on the circuit board.

Background technique

Will produce a large amount of heat in the process that general electronic component such as central processing unit (CPU) equals to move, if there is not in time to get rid of the heat of its generation, to cause the temperature of the working environment of electronic component to raise, and have a strong impact on the normal operation of electronic component, therefore fixedly install a radiator on described heat-generating electronic elements surface usually, to reach the effect of heat radiation; Radiator can rely on special-purpose buckle structure to combine with circuit board, yet this kind mode need increase the die cost when making fastener, and raises the cost.

Another kind of combination then is to utilize the mode of screw locking that radiator and circuit board are mutually combined, yet because circuit board is comparatively fragile, this kind mode will cause circuit board to be subjected to too much screw lock power easily and make circuit board damage.

Therefore just develop and a kind of existing elastic fixing device, please refer to shown in Figure 1, it is characterized by and utilize the sheathed screw a of a spring b, described screw a locking radiator c and backboard e are so that radiator c closely amplexiforms the processor f on the circuit board d, because sheathed described spring b among the described screw a, described spring b will prop up the surface of head and the radiator c of screw a, because the locking force of the elastic-restoring force of spring b and screw a, processor f on radiator c and the circuit board d is mutually combined but can not be subjected to excessive locking force, can avoid circuit board d to damage, but this kind practice still has a problem points: coping screw a and spring b are that metal material constitutes, so cause circuit board d and radiator c to form path easily and then cause the phenomenon of short circuit, make the electronic component on the described circuit board d (figure does not express) can't normal operation, cause circuit board d to damage.Therefore the utility model designer promptly improves at this problem points.

Summary of the invention

The purpose of this utility model is: a kind of elastic fastener is provided, to provide devices such as radiator to be fixed on the circuit board, barrel mast in the described elastic fastener is that non-conductive material is made, relies on the nonconducting characteristic of described barrel mast to produce the phenomenon of short circuit to prevent devices such as circuit board and radiator from contacting and damages.

For achieving the above object, the technical solution adopted in the utility model comprises:

A kind of elastic fastener is characterized in that: comprising:

One fixed element has a head and a holding part, and a side of described holding part forms a bulge loop;

One barrel mast has a hollow hole that wears for described fixed element, the described barrel mast snap ring that extended internally, and described snap ring is to be connected with the mutual clip of described bulge loop; And

One elastic element, its two ends elastic clip are respectively pulled between described head and described barrel mast.

For achieving the above object, the technical solution adopted in the utility model also comprises:

A kind of elastic fastener is characterized in that: comprising:

One fixed element has a head and a holding part, and a side of described holding part forms a bulge loop, more forms a retaining ring between described head and the described bulge loop;

One elastic element is to connect and fix with described retaining ring, pulls between described head and described barrel mast in described elastic element two ends elastic clip respectively.

Compared with prior art, adopt the advantage that the utlity model has of technique scheme to be: so, the nonconducting characteristic of described barrel mast can prevent that devices such as circuit board and radiator from contacting the phenomenon that produces short circuit and damage, again, to prevent that devices such as radiator are fixed on the strength of circuit board excessive and cause circuit board damage for the elastic force of elastic element.

The diagram simple declaration

Fig. 1 is the stereogram of existing structure;

Fig. 2 is the three-dimensional exploded view of first preferred embodiment of the present utility model;

Fig. 3 is the sectional drawing of first preferred embodiment of the present utility model;

Fig. 4 is that first preferred embodiment of the present utility model is applied in the fixing three-dimensional exploded view of radiator;

Fig. 5 is that first preferred embodiment of the present utility model is applied in the fixing sectional drawing of radiator;

Fig. 6 is the sectional drawing of second preferred embodiment of the present utility model.

Description of reference numerals: a-screw; The b-spring; The c-radiator; The d-circuit board; The e-backboard; The f-processor; The 10-fixed element; The 11-holding part; The 12-bulge loop; The 13-head; The 14-retaining ring; The 20-elastic element; The 30-barrel mast; The 31-hollow hole; The 32-snap ring; The 33-fixed groove; The 60-radiator; The 61-fixed hole; The 70-circuit board; The 71-penetration hole; The 72-heater element.

Embodiment

Relevant detailed description of the present utility model and technology contents cooperate graphic being described as follows, yet appended graphic reference and the explanation usefulness of only providing not is to be used for the utility model is limited.

Please refer to Fig. 2 and shown in Figure 3, be to be respectively the three-dimensional exploded view of first preferred embodiment of the present utility model and the sectional drawing of first preferred embodiment, the utility model provides a kind of elastic fastener, to provide devices such as radiator to be fixed on the circuit board (as host board), described elastic fastener comprises a fixed element 10, it has a holding part 11 and a head 13, and a side of described holding part 11 forms a bulge loop 12; Described elastic fastener more comprises a barrel mast 30, described barrel mast 30 is made by nonconducting materials such as plastic cement, pottery, rubber, glass, it has a hollow hole 31 that supplies described fixed element 10 to wear, described barrel mast 30 snap ring 32 that extended internally, described snap ring 32 is to be connected with described bulge loop 12 mutual clips; And an elastic element 20, described elastic element 20 is to can be a pressure spring, pull at the end face of described head 13 and described barrel mast 30 in its two ends elastic clip respectively.

Please refer to Fig. 4 and shown in Figure 5, be to be respectively that first preferred embodiment of the present utility model is applied in the fixing three-dimensional exploded view of radiator and first preferred embodiment is applied in the fixing sectional drawing of radiator, the configuration of the sink of general desktop computer is to amplexiform heater element 72 on the circuit board 70 by a radiator 60, described elastic fastener is to be fixed on the circuit board 70 for radiator 60, during use be with described elastic fastener pass from bottom to top on the circuit board 70 penetration hole 71 and with the fixed hole 61 mutual interlockings of a side of described radiator 60, and the top of barrel mast 30 is to amplexiform mutually with the bottom surface of circuit board 70, described elastic element 20 will be compressed and produce elastic restoring force this moment, this elastic restoring force can avoid the holding part 11 and the screw lock power of fixed hole 61 mutual interlockings excessive and cause circuit board 70 damages, in addition, because of penetration hole 71 De Zhi ?greater than the holding part 11 De Zhi of described fixed element 10 ?, so holding part 11 does not contact with circuit board 70, the electric current that can avoid the link tester on the circuit board 70 to cross directly flow to described radiator 60 via fixed element 10 and forms short circuit and circuit board 70 is damaged, again, described barrel mast 30 has nonconducting characteristic, described barrel mast 30 amplexiforms the bottom surface at circuit board 70, electric current on circuit board 70 circuits is stopped by barrel mast 30, avoid the electric current on circuit board 70 circuits to reach fixed element 10 and elastic element 20 formation short circuits and circuit board 70 is damaged.

Please refer to shown in Figure 6, it is the sectional drawing of second preferred embodiment of the present utility model, more plastic between described head 13 and the described bulge loop 12 have a retaining ring 14, described retaining ring 14 is to connect and fix for described elastic element 20, described barrel mast 30 end faces offer a fixed groove 33 concentric with described hollow hole 31 downwards, described elastic element 20 is to can be a taper pressure spring, pull in the bottom of described head 13 and described fixed groove 33 in its two ends elastic clip respectively, described elastic element 20 is to utilize retaining ring 14 and fixed element 10 to connect and fix mutually, in addition, in first embodiment, also plastic between described head 13 and the described bulge loop 12 have a retaining ring 14, can make the described elastic element 20 can more accurate location.

More than explanation is just illustrative for the utility model, and it is nonrestrictive, those of ordinary skills understand, under the situation of the spirit and scope that do not break away from claim and limited, can make many modifications, variation or equivalence, but but all will fall within the claim restricted portion of the present utility model.

Claims

1. elastic fastener is characterized in that: comprising:

2. elastic fastener according to claim 1 is characterized in that: described elastic element is a pressure spring.

3. elastic fastener according to claim 1 is characterized in that: described barrel mast forms a fixed groove concentric with described hollow hole, with the folder described elastic element of pulling.

4. elastic fastener according to claim 1 is characterized in that: the material of described barrel mast is a plastic cement.

5. elastic fastener according to claim 1 is characterized in that: the material of described barrel mast is a pottery.

6. elastic fastener according to claim 1 is characterized in that: the material of described barrel mast is a rubber.

7. elastic fastener according to claim 1 is characterized in that: the material of described barrel mast is a glass.

8. elastic fastener is characterized in that: comprising:

9. elastic fastener according to claim 8 is characterized in that: described elastic element is a taper pressure spring.

10. elastic fastener according to claim 8 is characterized in that: described barrel mast forms a fixed groove concentric with described hollow hole, with the folder described elastic element of pulling.

11. elastic fastener according to claim 8 is characterized in that: the material of described barrel mast is a plastic cement.

12. elastic fastener according to claim 8 is characterized in that: the material of described barrel mast is a pottery.

13. elastic fastener according to claim 8 is characterized in that: the material of described barrel mast is a rubber.

14. elastic fastener according to claim 8 is characterized in that: the material of described barrel mast is a glass.