CN101309568B - Fastener - Google Patents
Fastener Download PDFInfo
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- CN101309568B CN101309568B CN2007100743678A CN200710074367A CN101309568B CN 101309568 B CN101309568 B CN 101309568B CN 2007100743678 A CN2007100743678 A CN 2007100743678A CN 200710074367 A CN200710074367 A CN 200710074367A CN 101309568 B CN101309568 B CN 101309568B
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- Prior art keywords
- fastener
- location division
- radiator
- circuit board
- pressure section
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- Cooling Or The Like Of Electrical Apparatus (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The present invention relates to a buckle, which is used for fixing a heat radiator on the heating electronic component of a circuit. The radiator comprises a base seat and a plurality of heat radiating fins extending out of the base seat, the buckle comprises a linear positioning part sleeved with the partial radiating fins and a linear buckling part fixed on the positioning part and buckled with a circuit board, wherein the positioning part is sealing ring-shaped and is provided with an opening. The area of the opening is somewhat less than a cross sectional area enclosed by the heat radiating fins. At least one propping part propped against radiator is formed through the buckling part towards the circuit board. Compared with the prior art, when being sleeved on the radiating fins, the buckle is uneasy to deform, thereby, the heat radiator can be stably fixed on the circuit board.
Description
Technical field
The present invention relates to a kind of fastener, be meant a kind of fastener that radiator is fixed in electronic devices and components especially.
Background technology
When moving, can produce a large amount of heats such as computer cpu, north bridge chips, the contour electronic components of high power of video card, if these heats can not be left effectively, to directly cause temperature sharply to rise, and badly influence the normal operation of electronic devices and components.For this reason, need heat abstractor to come these electronic devices and components are dispelled the heat, traditional heat abstractor generally includes radiator and radiator is fixed to fastener on the electronic devices and components.
Chinese patent has disclosed a kind of heat abstractor combination for No. 01242181.2, it comprises a radiator and a fastener, this radiator comprises a pedestal and from some radiating fins that base extension goes out, is positioned at the adjacent radiating fin in radiator middle part and protrudes out the stopper section in opposite directions.This fastener middle part forms the location division with the stopper section butt, and this location division further comprises three kinks that are in suitable angle.During assembling, earlier fastener is placed adjacent top, radiating fin gap, radiator middle part, and press down fastener, the angle between its kink is diminished, thereby make the location division cross stop portion.Kink is owing to elastic force is recovered former angle then, thus with the fastener cross spacing in radiator.Cooperate with it because this fastener requires to have corresponding structure on radiator, need cut radiator, thereby have increased the manufacture difficulty of radiator; And the position fixing process of this fastener and radiator is comparatively complicated; Again, this fastener can only carry out cross spacing to radiator, and radiator is easily vertically producing slip, and then influences its radiating efficiency.
For overcoming above-mentioned shortcoming, so industry has produced different designs.Chinese patent has disclosed another kind of heat abstractor combination for No. 02271332.8, and it comprises that a radiator and that is formed with some grooves is fixed in the buckling device on the circuit board.This buckling device comprises a fastener and positioning piece, and the body that this fastener has a projection reaches from the extended elastic arm in body two ends.This keeper comprises the press body of semicircular in shape roughly, and this press body is placed in the fin gap of radiator and to the keeper longitudinal spacing.This press body offers an opening that matches with the protruding body of this fastener, and extend some rubber-like fins respectively in the both sides of this press body, these airfoils are identical with groove shape, it is attached at trench wall with the keeper cross spacing, thereby radiator is fixed on the circuit board.Compare with aforementioned heat abstractor, this heat abstractor combination does not need radiator is cut, and can reduce manufacture difficulty; And, only needing during assembling that keeper is attached at the radiator trench wall and just can finish the location, process is comparatively simple, and again, this buckling device all obtains spacing at vertical and horizontal, can prevent that radiator from producing slip.But because the airfoil of this keeper need be consistent with the radiator groove shape, if the radiator groove shape changes, each fin of this keeper all needs to make again, and therefore, the adaptability of this buckling device is lower; And above-mentioned keeper structure is comparatively complicated, and manufacturing cost is higher, is unfavorable for that the dealer promotes.
For making fastener can have simple structure and higher adaptability, the dealer designs a kind of buckling device that is disclosed for No. 01215323.0 as Chinese patent again.This buckling device is formed by resilient metal strip one bending, and its pressure section with a level is sheathed on the radiating fin of radiator.These pressure section two ends level respectively extend outward two adjutages, and each adjutage end is formed with a fastener.This two adjutage presses on the radiator base both sides respectively, and its terminal clasp rotates and radiator is fixed on the circuit board around adjutage.Clasp is around adjutage when rotation that is positioned at pedestal one side, and adjutage self deformation that twists produces a twisting resistance.This twisting resistance radially and tangentially has two force components along adjutage: tangential force component acts on pedestal and it is produced a downforce, makes radiator be close to the electronic devices and components surface; Force component radially acts on by the sheathed fin of fastener it is produced an outside pulling force, the mutual balance of the pulling force that the adjutage of this pulling force and opposite side produced and make fastener tightly be placed in above-mentioned fin, and this moment, this fin played an application of force strong point effect.Compare with the buckling device of aforementioned second example, when the radiating fin shape of radiator changes, only need independent change pressure section to become corresponding shape to cooperate with it, improved the adaptability of buckling device greatly; And this buckling device goes out for the bending of bonding jumper one, and structure is comparatively simple, and manufacturing cost is lower.But, because this radiator fixes by twisting resistance, can closely contact electronic devices and components for making radiator, this twisting resistance is generally all bigger, thereby makes the pulling force that acts on as the fin of the application of force strong point also bigger.When fin thickness hour, acting on the bigger pulling force in its both sides interacts, cause this fin generation deformation easily, become flexible thereby make to produce between fastener and radiator, make it effectively carry out spacing to radiator, and then cause being easy to generate slip between radiator and electronic devices and components, influence its radiating efficiency.
Summary of the invention
In view of this, be necessary to provide a kind of energy the stable fastener that fastens heat abstractor.
A kind of fastener, be used for radiator is fixed in the heating electronic component of circuit board, described radiator comprises a pedestal and some radiating fins that is gone out by base extension, the buckling parts that described fastener comprises that a location division and that is sheathed on the part radiating fin is fixed on the described location division and fastens with circuit board, described location division is closed annular, described location division has an opening, the area of this opening is slightly less than the cross-sectional area in the space that above-mentioned radiating fin is enclosed to form, and described buckling parts is formed with the pressure section that presses on radiator towards circuit board.
Compared with prior art, fastener of the present invention is directly exerted pressure with fixed heat sink on circuit board to radiator by pressure section, this pressure is mainly produced by the elastic deformation of buckling parts, do not need by means of the location division substantially, so location effect is only played in the location division.And this positioning action is for realizing by the location division is sheathed on radiating fin, and is because the elastic deformation that the location division is taken place when sheathed is limited, less by the active force that presses on radiating fin that deformation produced.Even therefore the thickness of radiating fin is less, it also is not easy to take place deformation, thereby guarantees the stable fastening between fastener and radiator.
With reference to the accompanying drawings, the invention will be further described in conjunction with specific embodiments.
Description of drawings
Fig. 1 is the three-dimensional exploded view of fastener, radiator and the circuit board of first embodiment of the invention.
Fig. 2 is the assembly drawing of Fig. 1.
Fig. 3 is the three-dimensional assembly diagram that Fig. 2 radiator cuts a part.
Fig. 4 is the three-dimensional exploded view of fastener, radiator and the circuit board of second embodiment of the invention.
Fig. 5 is the assembly drawing of Fig. 4.
Embodiment
See also Fig. 1 and Fig. 2, show fastener 30 of the present invention and radiator with matching 20.Described radiator 20 comprises a square heat conducting base 22 and by the extended vertically upward some radiating fins 24 of this pedestal 22, these pedestal 22 lower surfaces and electronic devices and components 12 thermo-contacts and with heat delivered to radiating fin 24.Each radiating fin 24 in the present embodiment is square cylinder, and 24 of adjacent radiating fins are parallel to each other and equidistantly are provided with at interval, and forms the radiating fin 24 of 4 * 4 arrays on pedestal 22, to match with fastener 30.
See also Fig. 3, described fastener 30 is arranged at radiator 20 tops, it comprises that one is sheathed on the linear orientation portion 32 of radiator 20 and strides the linear buckling parts 34 of being located at this location division 32 and compressing with radiator 20, and wherein location division 32 and buckling parts 34 are one-body molded by the rubber-like material.The closed hoop structure that this location division 32 is square, it surrounds a square aperture 320 by four frames 322.This location division 32 is arranged at the inside of radiating fin 24, and adjacent nine radiating fins 24 that will be positioned at array one side are sheathed on its square aperture 320.The area of this square aperture 320 is slightly less than the cross-sectional area in the square column space that above-mentioned nine radiating fins 24 are enclosed to form, thereby need expand outwardly when making sheathed above-mentioned nine radiating fins 24 in location division 32, produces a small deformation.This deformation impels location division 32 to have the trend of inside contraction, causes location division 32 to produce the resilience force of an extruding radiating fin 24 sidewalls, thereby each frame 322 of location division 32 is closely contacted with 24 of radiating fins, reaches the purpose spacing to radiator 20.
This buckling parts 34 is fixed on 32 relative two frames 322 of above-mentioned location division.This downward punching press in buckling parts 34 middle parts forms the pressure section 340 of an arc, this pressure section 340 is positioned at 32 openings, 320 middle parts, location division and presses on the pedestal 22 of radiator 20 and it is produced a downward pressure, and radiator 20 can be fitted tightly in electronic devices and components 12 surfaces.These pressure section 340 2 free terminals outwards extend horizontally away two elastic arms 344 respectively, this two elastic arm 344 vertically is welded in the centre of location division 32 relative two frames 322 respectively, and be in same plane with location division 32, thereby make pressure section 340 be passed down through location division 32 opening 320 and with radiator 20 pedestals 22 butts, with 32 parallel pedestal 22 tops that are suspended in, location division, location division 32 is not directly contacted with pedestal 22.These two elastic arms, 344 free terminals level respectively outwards bend out the clasp 342 of two arcs, be used for circuit board 10 on corresponding two clasps 14 buckle mutually, and fastener 30 is fixing.When clasp 342 compressed radiator 20 with circuit board 10 clasps, 14 buckles, elastic deformation took place in two elastic arms 344, produces two resilience forces.This two resilience force acts on pressure section 340, makes it that deformation also take place, thus produce one with the corresponding downforce of resilience force.This pressure acts on the pedestal 22 of radiator 20, makes it be attached at electronic devices and components 12 surfaces closely.
When being fastened on fastener 30 on the radiator 20, at first the pedestal 22 with radiator 20 is positioned over electronic devices and components 12 surfaces; Then, adjust the direction of fastener 30, make the corresponding respectively clasp that is positioned at circuit board 10 14 tops of two clasps 342 of fastener 30; The location division 32 of fastener 30 is passed the nine adjacent radiating fins 24 of a side that are positioned at pedestal 22 again, the pressure section 340 of fastener 30 is contacted with the pedestal 22 of radiator 20, two clasps 342 that cause fastener 30 are near circuit board 10 corresponding clasps 14; Respectively clasp 342 and corresponding clasp 14 are fastened again at last.Thus, this fastener 30 has been finished the fastening process.
In sum, fastener of the present invention 30 is simple in structure, and it is convenient to assemble, and its location division 32 is a closing structure, can be spacing fully to radiator 20.Compared with prior art, fastener 30 of the present invention is directly exerted pressure with fixed heat sink 20 on circuit board 10 by 340 pairs of radiators 20 of pressure section, this pressure is mainly produced by the elastic deformation of buckling parts 34, do not need substantially by means of location division 32, so location effect is only played in location division 32.This positioning action is for realizing by location division 32 is sheathed on radiating fin 24, and is because the elastic deformation that location division 32 is taken place when sheathed is limited, less by the active force that presses on radiating fin 24 that deformation produced.Therefore even the thickness of radiating fin 24 is less, it also is not easy to take place deformation, thereby guarantees the stable fastening of 20 in fastener 30 and radiator.
Be appreciated that ground, corresponding other two pressure sections of pressure section of downward punching press formation and buckling parts can be distinguished in the relative both sides that the location division of fastener of the present invention is parallel to the buckling parts elastic arm, can provide bigger pressure when making fastener press on radiator, thereby radiator is contacted more closely with electronic devices and components.
It is also understood that ground, the location division of fastener of the present invention can also be circle, other closed annular structures such as triangle, and it is sheathed on the radiator corresponding structure, can play positioning action equally.
Be appreciated that ground again, the size of the location division of fastener of the present invention also can change, with the radiating fin of sheathed respective numbers, to adapt to the demand of difference.
As shown in Figure 4 and Figure 5, be the fastener 30a that the present invention second implements, this fastener 30a is used for simultaneously fixedly second radiator 20a, 40a and two electronic devices and components 12a, 16a is dispelled the heat.This fastener 30a comprises the 32a of linear orientation portion, the 36a and one and the linear buckling parts 34a that fixes of this two location division 32a, 36a of a pair of identical structure.Location division 32 structures among this two location division 32a, 36a and first embodiment are identical, stagger mutually between these location divisions 32a, 36a; This buckling parts 34a is formed by connecting by the buckling parts 34 of 2 first embodiment, and it has two pressure section 340a, 346a.Two free terminals of each pressure section 340a, 346a level respectively extend outward two parallel elastic arm 344a.Wherein, the end of two elastic arm 344a that is positioned at two location division 32a, the 36a outside bends out the two clasp 342a that the corresponding clasp 14a with circuit board 10a fastens respectively; Two elastic arm 344a between two location division 32a, 36a interconnect by a connecting portion 348a vertical with this two elastic arm 344a, to adapt to the demand of distance between different electronic devices and components 12a, 16a.This fastener 30a can fix a plurality of radiator 20a, 40a simultaneously, and the fussy degree when having reduced fastener 30a and radiator 20a, 40a assembling makes assembling process more simple and direct.
Claims (10)
1. fastener, be used for radiator is fixed in the heating electronic component of circuit board, described radiator comprises a pedestal and some radiating fins that is gone out by base extension, it is characterized in that: the linear buckling parts that described fastener comprises that a linear orientation portion and that is sheathed on the part radiating fin is fixed on the described location division and fastens with circuit board, described location division is closed annular, described location division has an opening, the area of this opening is slightly less than the cross-sectional area in the space that above-mentioned radiating fin is enclosed to form, and described buckling parts is formed with at least one pressure section that presses on radiator towards circuit board.
2. fastener as claimed in claim 1 is characterized in that: described buckling parts middle part is formed with above-mentioned pressure section towards circuit board, and described pressure section is curved.
3. fastener as claimed in claim 1 is characterized in that: described pressure section two free terminals extend outward respectively and two fixing elastic arms of location division.
4. fastener as claimed in claim 3 is characterized in that: described elastic arm free terminal bends out the clasp that fastens with circuit board.
5. fastener as claimed in claim 3 is characterized in that: the square annular closing structure that described location division comprises that four end to end frames are surrounded, described four frames surround an opening.
6. fastener as claimed in claim 5 is characterized in that: described two elastic arms are individually fixed in relative two frames of location division, and described two elastic arms and location division are in same plane, and the opening that described pressure section passes the location division presses on radiator.
7. fastener as claimed in claim 6 is characterized in that: described location division relative two frames in addition is formed with other two pressure sections towards circuit board.
8. fastener as claimed in claim 1 is characterized in that: described fastener also comprises another location division, and described another location division is identical with above-mentioned location division structure.
9. fastener as claimed in claim 8, it is characterized in that: described buckling parts comprises two pressure sections that pass above-mentioned two location divisions respectively, and from extended four elastic arms in described each pressure section both sides, two elastic arms between two pressure sections interconnect by a junction, and two elastic arms that are positioned at the two pressure sections outsides bend out the clasp with the circuit board buckle respectively.
10. fastener as claimed in claim 1 is characterized in that: described buckling parts is by being fixedly welded on the location division.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100743678A CN101309568B (en) | 2007-05-18 | 2007-05-18 | Fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100743678A CN101309568B (en) | 2007-05-18 | 2007-05-18 | Fastener |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101309568A CN101309568A (en) | 2008-11-19 |
| CN101309568B true CN101309568B (en) | 2011-06-08 |
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ID=40125724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100743678A Expired - Fee Related CN101309568B (en) | 2007-05-18 | 2007-05-18 | Fastener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101309568B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102386152B (en) * | 2010-09-02 | 2013-08-28 | 延锋伟世通汽车电子有限公司 | Automobile power amplifier integrated circuit (IC) fixed elastic sheet |
| CN108934147B (en) * | 2017-05-27 | 2020-09-29 | 南宁富桂精密工业有限公司 | Spring hook type heat sink structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2439683Y (en) * | 2000-08-16 | 2001-07-18 | 富准精密工业(深圳)有限公司 | Combination of heat-radiation device |
| CN2502319Y (en) * | 2001-10-19 | 2002-07-24 | 潘聪荣 | Improved IC radiating and fastening device assembly structure |
-
2007
- 2007-05-18 CN CN2007100743678A patent/CN101309568B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2439683Y (en) * | 2000-08-16 | 2001-07-18 | 富准精密工业(深圳)有限公司 | Combination of heat-radiation device |
| CN2502319Y (en) * | 2001-10-19 | 2002-07-24 | 潘聪荣 | Improved IC radiating and fastening device assembly structure |
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| Publication number | Publication date |
|---|---|
| CN101309568A (en) | 2008-11-19 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110608 Termination date: 20130518 |