CN105682338A - Radiating apparatus and assembling method therefor - Google Patents
Radiating apparatus and assembling method therefor Download PDFInfo
- Publication number
- CN105682338A CN105682338A CN201610078958.1A CN201610078958A CN105682338A CN 105682338 A CN105682338 A CN 105682338A CN 201610078958 A CN201610078958 A CN 201610078958A CN 105682338 A CN105682338 A CN 105682338A
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- Prior art keywords
- leg
- hollow cavity
- joint chair
- radiator
- card joint
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 abstract description 23
- 239000003381 stabilizer Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 7
- 230000005489 elastic deformation Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0201—Thermal arrangements, e.g. for cooling, heating or preventing overheating
- H05K1/0203—Cooling of mounted components
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/06—Thermal details
- H05K2201/066—Heatsink mounted on the surface of the printed circuit board [PCB]
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention provides a radiating apparatus and an assembling method therefor. The radiating apparatus is arranged on a printed circuit board; the radiating apparatus comprises a radiator and clamping bases, wherein the radiator comprises a radiator body and stand bars fixedly connected with the radiator body; the stand bars are positioned on one side, facing to the printed circuit board, of the radiator body; clamping parts are arranged at the first ends of the clamping bases; welding pins are arranged at the second ends of the clamping bases; the end parts of the stand bars are clamped with the clamping parts; and the welding pins are welded to the printed circuit board. According to the radiating apparatus and the assembling method therefor, the fixation between the radiator and the circuit board can be realized, and a relatively good welding quality between the radiator and the circuit board is achieved.
Description
Technical field
The present invention relates to heat dissipation technology, particularly relate to a kind of heat abstractor and heat abstractor assembly method.
Background technology
The chips such as the integrated circuit on circuit board operationally, can give out amount of heat. If these heat accumulation are on chip, chip can be caused damage, so that utilize radiator that the chip on circuit board is dispelled the heat.
At present, the radiator on circuit board mainly has following several fixed form: one is utilize bonding agent or plastics lock, is fixed on circuit boards by radiator, and now, radiator is earth-free; Second method is to arrange columned welding pin on a heat sink, the pad solder of welding pin and circuit board, so that radiator is welded and fixed on circuit boards, and radiator can be grounded by welding pin, to avoid radiator to produce electromagnetic field couples effect with other components and parts on circuit board, strengthen the Electro Magnetic Compatibility of radiator. At present, because the scheme on circuit boards that is welded and fixed by radiator is capable of ground connection because of it, there is excellent Electro Magnetic Compatibility, and become the major way that radiator is fixing.
But, owing to the heat-sinking capability of radiator itself is relatively strong, carry out between radiator with circuit board when welding, it is easy to cause the situations such as failure welding because heat distributes very fast, it is necessary to the later stage manually carries out the operations such as repair welding.
Summary of the invention
The present invention provides a kind of heat abstractor and heat abstractor assembly method, it is possible to be fixed on circuit board by radiator, and between radiator and circuit board, welding quality is higher.
On the one hand, the present invention provides a kind of heat abstractor, arranges on a printed circuit board, including radiator and card joint chair;
Radiator includes radiator body and fixes the leg being connected with radiator body, and leg is positioned at the side towards printed circuit board of radiator body, and the radial dimension of the end of leg is more than the radial dimension of root; First end of card joint chair is the hollow cavity with opening, and card joint chair the second end has leg, and the end of leg is through opening and is fastened in hollow cavity, and leg welds with printed circuit board.
On the other hand, the present invention provides a kind of heat abstractor assembly method, including:
Being welded on printed circuit board by card joint chair, wherein, one end towards printed circuit board of card joint chair is leg, and one end deviating from printed circuit board of card joint chair is the holding section that can engage with the leg of radiator;
The leg of radiator is fastened in the holding section of card joint chair, so that radiator and printed circuit board are relatively fixed.
Heat abstractor provided by the invention is arranged on a printed circuit board, and this heat abstractor includes radiator and card joint chair. Wherein, radiator includes radiator body and fixes the leg being connected with radiator body, and leg is positioned at the side towards printed circuit board of radiator body; First end of card joint chair is holding section, and card joint chair the second end has leg, the end of leg and holding section clamping, and leg welds with printed circuit board. So can radiator be firmly secured on printed circuit board, and be connected because setting for card between card joint chair and radiator, so can first individually card joint chair be welded on circuit board, plug-in mounting fixed heat sink again, so heat during welding is not transferred on radiator, carry out card joint chair with between printed circuit board when welding, it is possible to prevent the failure welding phenomenon caused because thermal loss is too fast.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the heat abstractor that the embodiment of the present invention one provides;
Fig. 2 is the structural representation of the end of the heat radiator stabilizer blades that the embodiment of the present invention one provides;
Fig. 3 is the structural representation of the card joint chair that the embodiment of the present invention two provides;
Fig. 4 is the heat radiator stabilizer blades connection diagram with card joint chair of the embodiment of the present invention two offer;
Fig. 5 is the structural representation of the card joint chair that the embodiment of the present invention three provides;
Fig. 6 is the structural representation of the card joint chair that the embodiment of the present invention four provides;
Fig. 7 is the structural representation of the another kind of card joint chair that the embodiment of the present invention four provides;
Fig. 8 is the structural representation of the card joint chair that the embodiment of the present invention five provides;
Fig. 9 is the structural representation of the card joint chair that the embodiment of the present invention six provides;
Figure 10 is the schematic flow sheet of the assembly method of a kind of heat abstractor that the embodiment of the present invention two provides;
The schematic flow sheet of the another kind of heat abstractor assembly method that Figure 11 provides for the embodiment of the present invention two.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the present invention, rather than whole embodiments. Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Fig. 1 is the structural representation of the heat abstractor that the embodiment of the present invention one provides. As it is shown in figure 1, the heat abstractor that the present embodiment provides, being arranged on printed circuit board 10, this heat abstractor includes radiator 1 and card joint chair 2.
Wherein, radiator 1 includes radiator body 11 and the leg 12 that be connected fixing with radiator body 11, and leg 12 is positioned at the side towards printed circuit board 10 of radiator body 11; First end of card joint chair 2 is holding section, and card joint chair 2 second end has leg 22, and end 121 and the holding section clamping of leg 12, leg 22 welds with printed circuit board 10.Wherein, all kinds of chips that radiator 1 is mainly on printed circuit board 10 dispel the heat, to ensure the normal operation of chip.
Radiator 1 has generally included by the metal radiator body 11 such as copper or aluminum, radiator body 11 generally can be connected by heat-conducting silicone grease etc. with the chip on printed circuit board 10, when chip operation on printed circuit board 10, heat produced by chip will pass through the conduction such as heat-conducting silicone grease to radiator body 11. Radiator body 11 has radiating fin, it is possible to by the heat Quick diffusing of radiator body 11 to radiator ambient air, to realize radiating and cooling function.
Radiator body 11 is being additionally provided with leg 12 towards the side of printed circuit board 10, and leg 12 is fixing with radiator body 11 to be connected, and relies on end 121 to be plugged in card joint chair 2, and card joint chair 2 is connected with printed circuit board 10 again. Leg 12 and radiator body 11 are generally integrative-structure, or utilize the connected mode such as screw, stud to be connected with radiator body 11. When leg 12 is structure as a whole with radiator body 11, because radiator body 11 is generally metal material, constitute so leg 12 is also same material, because metal material heat radiation is very fast, it is possible to ensure the excellent heat conductivity performance of radiator body.
Concrete, holding section and heat radiator stabilizer blades can be all kinds of snap-in structure and buckle etc., for instance, holding section can be generally the hollow cavity 21 with opening 211, and the radial dimension of the end 121 of leg 12 is more than the radial dimension of root, with traverse opening 211, and it is fastened in hollow cavity 21. Now, the root of leg 12 is connected with radiator body 11, end 121 radial dimension of leg 12 is more than the radial dimension of root, thus when leg 12 end is goed deep in the hollow cavity 21 of card joint chair 2 first end, the sidewall of hollow cavity 21 or opening 211 can be stuck in the root place that the radial dimension of leg 12 is thinner, and end 121 is because radial dimension is more than the radial dimension of root, so cannot extract from hollow cavity 21, it is achieved thereby that the clamping between leg 12 and card joint chair 2 first end. Optionally, leg 12 and card joint chair 2 can be all multiple, and leg 12 is identical with the quantity of card joint chair 2 and one_to_one corresponding. So multiple legs 12 can ensure that the firm support to radiator body 11.
Further, for the ease of realizing the clamping with card joint chair 2, leg 12 end 121 of radiator can have various shape. Fig. 2 is the structural representation of the end of the heat radiator stabilizer blades that the embodiment of the present invention one provides. As in figure 2 it is shown, the shape of heat radiator stabilizer blades 12 can be hammer head shape etc. The root of leg 12 is comparatively elongated, and the radial dimension of end 121 is bigger, so that whole leg 12 is in a hammer head shape, after end 121 snaps in hollow cavity 21, end 121 is because of the restriction of own form, it is difficult to extract from hollow cavity 21, so that keep between radiator 1 with card joint chair 2 being firmly connected.
Being provided with the leg 22 for being connected with printed circuit board 10 on second end of card joint chair 2, leg 22 can pass the pad of printed circuit board 10, and together with pad solder, thus card joint chair 2 is fixed on printed circuit board 10. Concrete, the ground connection in order to realize radiator 1 is arranged, and card joint chair 2 is generally metal card joint chair. Because metal has electric conductivity, so card joint chair 2 can realize the conducting between radiator 1 and printed circuit board 10, and by when on radiator 1, accumulation has electric charge, electric charge can pass through card joint chair 2 and be transferred on printed circuit board 10, printed circuit board 10 can arrange ground wire, ground wire is connected with the leg 22 of card joint chair 2, to realize the grounding function of radiator 1.Optionally, card joint chair 2 can also adopt other material that can conduct electricity to make.
It is connected because setting for card between card joint chair and radiator, so can when carrying out the assembling of radiator, adopting first is welded on circuit board by card joint chair, it is inserted into the mode of also fixed heat sink, because the heat-sinking capability of card joint chair is more weak during welding, it is possible to prevent thermal loss too fast and the failure welding phenomenon that causes.
As preferably, the hollow cavity 21 of card joint chair 2 is generally thin-wall construction. So on the one hand when welding, the volume of card joint chair 2 and quality are all less, it is possible to reduce the thermal loss that card joint chair 2 causes further, effectively reduce distributing of heat; On the other hand, the producible amount of elastic deformation of thin-wall construction self is bigger, it is ensured that and the engaging effect between the leg 12 of radiator 1.
In the present embodiment, heat abstractor is arranged on a printed circuit board, and this heat abstractor includes radiator and card joint chair. Wherein, radiator includes radiator body and fixes the leg being connected with radiator body, and leg is positioned at the side towards printed circuit board of radiator body; First end of card joint chair is holding section, and card joint chair the second end has leg, the end of leg and holding section clamping, and leg welds with printed circuit board. It is achieved in that and radiator has been fixed on printed circuit board, and after adopting this structure, set for card between card joint chair and radiator and be connected, first individually card joint chair is welded on circuit board so can adopt, the assemble sequence of plug-in mounting fixed heat sink again, so welding time heat be not transferred on radiator, carry out card joint chair with between printed circuit board when welding, it is possible to prevent the failure welding phenomenon caused because thermal loss is too fast.
On the basis of above-described embodiment, provide several different clamping holder structure separately below, to adapt to different manufacturing process requirements and fixed effect.
Such as, the hollow cavity 21 of card joint chair 2 first end can rely on own form, it is achieved the clamping to the end 121 of leg 12. Fig. 3 is the structural representation of the card joint chair that the embodiment of the present invention two provides. Fig. 4 is the heat radiator stabilizer blades connection diagram with card joint chair of the embodiment of the present invention two offer. As shown in Figure 3 and Figure 4, on previous embodiment one basis, the stage casing of hollow cavity 21 or the position of close opening 211 are inwardly recessed, so that hollow cavity 21 is in the end little shape of big mouth, when hollow cavity 21 is inserted in the end 121 of leg 12, the end 121 of leg 12 is bottom hollow cavity 21 and between the position being inwardly recessed.
Concrete, the sidewall of hollow cavity 21 is inwardly recessed, and the internal diameter of the bottom of hollow cavity 21 is relatively big, thus defining a cavity that just can hold leg 12 end 121. When the end 121 of leg 12 is inserted in this hollow cavity 21, the end 121 of leg 12 is positioned at this cavity scope, and end 121 is limited in bottom hollow cavity 21 and between the position being inwardly recessed of hollow cavity 21, and the radial dimension of the root of leg 12 is less, can stretch out from cavity. Now, if the leg 12 of radiator 1 moves outside hollow cavity 21, then can be stopped by the position being inwardly recessed of hollow cavity 21, thus position is restricted, it is achieved thereby that the engaging that card joint chair 2 is to leg end portions 121.
Concrete, the position being inwardly recessed of hollow cavity 21 may be located at the stage casing of hollow cavity 21 or the position of the opening 211 near hollow cavity 21.The size of the size and the end 121 of the leg 12 snapped in that are inwardly recessed between bottom position and hollow cavity 21 cavity formed matches, the end 121 of such leg 12 holds in the cavity just, spacious amount between leg 12 end 121 and hollow cavity 21 is less, and the end 121 of leg 12 is difficult to deviate from from hollow cavity 21.
Concrete, in order to ensure that card termination process is comparatively smooth and easy, the position being inwardly recessed of hollow cavity 21 is generally arc, now, hollow cavity 21 is two ends narrower hourglass shape relatively big, middle from sidewall direction, and is the arc of rounding off between the sidewall of hollow cavity 21 and other parts. When hollow cavity 21 is inwardly recessed the arc that position and other parts are rounding off, the end 121 of leg 12 is easier to snap among card joint chair 2.
In the present embodiment, the stage casing of card joint chair hollow cavity or the position of close opening are inwardly recessed, so that hollow cavity is the end little shape of big mouth, when hollow cavity is inserted in the end of leg, the end of leg is bottom hollow cavity and between the position being inwardly recessed. When the leg of such radiator moves outside hollow cavity, meeting is limited location because of the stop being inwardly recessed position of hollow cavity, it is achieved thereby that the engaging that card joint chair is to leg end portions.
On the basis of above-mentioned clamping holder structure, for the ease of carrying out the clamping between leg 12 and card joint chair 2, it is also possible to shape and structure to hollow cavity 21 improve. Fig. 5 is the structural representation of the card joint chair that the embodiment of the present invention three provides. As it is shown in figure 5, offer gap 212 on the sidewall of the hollow cavity 21 of card joint chair 2, the bearing of trend in gap 212 is consistent with the direction of insertion of leg 12 end 121, so that hollow cavity 21 is when being inserted by the end 121 of leg 12, struts along gap 212.
Concrete, the one end in this gap 212 generally extends to opening 211 place of hollow cavity 21, and gap 212 other end may extend to the position at place, end 121 of leg 12. The bearing of trend in gap 212 keeps consistent with the direction of insertion of leg 12 end 121, thus hollow cavity 21 can be made to rive along the direction of insertion of leg 12 end 121, so that hollow cavity 21 produces certain elastic deformation when leg 12 end 121 is inserted, expand the width in gap 212, so that leg 12 end 121 is inserted among the hollow cavity 21 of card joint chair 2 smoothly. After leg 12 end 121 is inserted, gap 212 place loses the support of leg 12 end 121, and returns back to original gap width. Thus, hollow cavity 21 is offered gap 212, by increasing capacitance it is possible to increase the hollow cavity 2 amount of elastic deformation when clamping is inserted, so that the end 121 of leg 12 can enter in hollow cavity 21 more easily.
After hollow cavity 21 is offered gap 212, hollow cavity 21 can rely on the change width in gap 212 to change local width and internal capacity, thus conveniently carrying out the insertion of leg 12, thus the amount of recess that hollow cavity 21 is inwardly recessed part can be bigger, after snapping in card joint chair 2 at leg 12, it is ensured that the hollow cavity 21 binding effect to the end 121 of leg 12. Card joint chair 2 may utilize leg 22 and realizes being welded and fixed between printed circuit board.
In the present embodiment, the stage casing of card joint chair hollow cavity or the position of close opening are inwardly recessed, so that hollow cavity is the end little shape of big mouth, when hollow cavity is inserted in the end of leg, the end of leg is bottom hollow cavity and between the position being inwardly recessed, offering gap on the sidewall of this external clamping seat hollow cavity, the bearing of trend in gap is consistent with the direction of insertion of leg end portions. So can increase the hollow cavity amount of elastic deformation when clamping is inserted, enable the end of leg to enter more easily in hollow cavity.
In addition it is also possible to adopt other structure to fix leg 12 end 121 inserting card joint chair 2.Such as, holding division can be set on the medial wall of hollow cavity 21, when the end 121 of leg 12 is deviate from from hollow cavity 21, holding division can apply rollback resistance to leg 12 end 121, makes the end 121 of leg 12 be limited in bottom hollow cavity 21 and between holding division. Now, hollow cavity 21 both can keep the shapes such as consistent hollow cylinder for internal diameter, can also for have the position being inwardly recessed in above-described embodiment, the rollback resistance that so can provide in conjunction with the interior shape of hollow cavity 21 and holding division, it is ensured that leg 12 end 121 is limited in hollow cavity 21.
Wherein, the shape of hollow cavity 21 can be a hollow cylinder, in radiator 1, the end 121 of leg 12 is easily inserted in this hollow cylinder, and the holding division on central cavity 21 medial wall can stop the end 121 of leg 12 to be deviate from from central cavity 21.
Optionally, Fig. 6 is the structural representation of the card joint chair that the embodiment of the present invention four provides. As shown in Figure 6, on above-described embodiment basis, holding division could be arranged to the annular projection 231 being positioned on hollow cavity 21 medial wall, and the protrusion direction of annular projection 231 is internal towards hollow cavity 21, and the axis direction of annular projection 231 is towards the card set direction of leg 21. Annular projection 231 has certain altitude, make the internal diameter maximum outside diameter less than leg 12 end 121 of radiator 1 of annular projection 231, because the hollow cavity 21 of card joint chair 2 is generally thin-wall construction, so certain external force can be applied when leg end portions 121 is snapped in columned hollow cavity 21, hollow cavity 21 is allowed to produce certain elastic deformation, so that the end 121 of leg 12 can snap in smoothly. And after the end 121 of leg 12 snaps in columned hollow cavity 21 from opening 211, cannot departing from from hollow cavity 21 because of the restriction of annular projection 231, it is achieved thereby that the engaging function of leg 12 and card joint chair 2.
Concrete, the axle center of annular projection 231 and leg 12 to snap in direction consistent, because when the end 121 of leg 12 is in the hollow cavity 21 snapping in card joint chair 2, its direction of insertion is perpendicular to card joint chair 2 and printed circuit board 10, so that the in-plane at annular projection 23 place snap in leg 12 direction keep vertical, can ensure that the end 121 of leg 12 correctly engages with card joint chair 2, it is to avoid the situation that leg 12 tilts occurs. Then card joint chair 2 may utilize leg 22 and realizes being welded and fixed between printed circuit board.
Further, in order to simplify the processing technology of card joint chair 2, it is possible to use the form arranging step in card joint chair 2 hollow cavity 21 medial wall realizes the bulge-structure of annular. And the step surface of step can form the annular projection 231 being positioned on medial wall.
Additionally, annular projection also can combine with the shape of hollow cavity, to reach better locating effect. Fig. 7 is the structural representation of the another kind of card joint chair that the embodiment of the present invention four provides. As shown in Figure 7, it is also possible to allow hollow cavity 21 have the position being inwardly recessed, the rollback resistance that so can provide in conjunction with the interior shape of hollow cavity 21 and annular projection 231 holding division such as grade, it is ensured that leg 12 end 121 is limited in hollow cavity 21.
In the present embodiment, holding division can be set on the medial wall of hollow cavity, and allow the end of leg be limited in bottom hollow cavity and between holding division, such as holding division could be arranged to the annular projection being positioned on hollow cavity medial wall, the protrusion direction of annular projection is inside hollow cavity, and the axis direction of annular projection is towards the card set direction of leg. After heat radiator stabilizer blades end snaps in columned hollow cavity, cannot can depart from from hollow cavity because of the restriction of annular projection, it is achieved thereby that the engaging function of leg and card joint chair.
As the optional embodiment of another kind, when utilizing the holding division on hollow cavity medial wall to engage, it is also possible to making holding division is other different version.Fig. 8 is the structural representation of the card joint chair that the embodiment of the present invention five provides. As shown in Figure 8, holding division is the salient point 232 being positioned on hollow cavity 21 medial wall, and the protrusion direction of salient point 232 is internal towards hollow cavity 21.
Concrete, hollow cavity 21 is provided with salient point 232 on medial wall, its protrusion direction is internal towards hollow cavity 21, when so producing relative sliding between the leg 12 of radiator 1 and hollow cavity 21, salient point 232 can increase leg 12 end 121 and the frictional force on the contact surface of hollow cavity 21, this frictional force can become rollback resistance, hinders the relative movement between end 121 and the card joint chair 2 of leg 12. Thus, when the end 121 of heat radiator stabilizer blades 12 snaps in after in hollow cavity 21, the end 121 of leg 12 cannot can be deviate from because of the inhibition of salient point 232 from hollow cavity 21.
Salient point 232 can independent role, it is possible to combining with the shape of hollow cavity, to reach better locating effect, its concrete structure is similar with previous embodiment, repeats no more herein.
Salient point 232 can adopt impact style etc. to manufacture, and as adopted pressing equipment from methods such as card joint chair 2 outer wall inwardly carry out that punching press is got ready, makes to occur on hollow cavity 21 inwardly projecting round dot. Impact style is adopted to make salient point 232, it is possible to allow salient point 232 smooth surface without burr, to prevent the tip of salient point 232 from leg 12 surface of radiator 1 is caused damage.
Generally, in order to reduce salient point 232 quantity, while reducing processing capacity, ensure the engaging effect between hollow cavity 21 and heat radiator stabilizer blades 12, salient point 232 generally can be arranged on the medial wall of hollow cavity 21 by spaced apart circumferential, to ensure that the end 121 of leg 12 all can be reached blocking effect by hollow cavity 21 in all directions of this circumference.
In the present embodiment, when utilizing the holding division on hollow cavity medial wall to engage, it is also possible to making holding division is other different version, and if holding division is the salient point being positioned on hollow cavity medial wall, the protrusion direction of salient point is inside hollow cavity. So when the end of heat radiator stabilizer blades snaps in after in hollow cavity, leg end portions cannot can be deviate from because of the inhibition of salient point from hollow cavity.
On the basis of above-described embodiment, in order to ensure can to firmly fix and be connected between card joint chair 2 with printed circuit board 10, the physical dimension of card joint chair 2 can suitably be amplified, and allows each card joint chair 2 be connected with printed circuit board 10 by multiple legs 22. Fig. 9 is the structural representation of the card joint chair that the embodiment of the present invention six provides. As it is shown in figure 9, leg 22 at least two of card joint chair 2 second end, and parallel interval arrangement between leg 22.
When one end being connected with printed circuit board 10 of card joint chair 2 has multiple leg 22, card joint chair 2 one end is connected with leg 12 by hollow cavity 21, thus supporting radiator body 11, and the other end firmly can be connected with between printed circuit board 10 by the fixation of these multiple legs 22. Because being generally of interval between pad and pad on printed circuit board 10, so also keeping between multiple legs 22 on card joint chair 2 being intervally arranged, and the direction of multiple leg 22 is all parallel, so that card joint chair 2 second end can vertically be inserted on printed circuit board 10. In addition, because each leg 22 all can remain up with the pad on printed circuit board 10, to realize the ground connection between radiator body 11 and printed circuit board 10, even if so having leg 22 and printed circuit board 10 to there is loose contact or rosin joint phenomenon, this card joint chair 2 can also pass through other leg, and keeps the ground connection between radiator 1 and printed circuit board 10.
In the present embodiment, for connecting the leg at least two of radiator and the second end of the card joint chair of printed circuit board, and parallel interval arrangement between leg. Card joint chair the second end is provided with multiple leg, it is ensured that with being firmly connected between printed circuit board, and be further ensured that the ground connection between radiator and printed circuit board.
Additionally, the present invention also provides for the assembling fixing means of a kind of heat abstractor, to realize fixing on a printed circuit board radiator. The assembly method of the heat abstractor provided in the present embodiment, it is possible to the structure of any one heat abstractor suitable in above-described embodiment, so place repeats no more. Concrete, Figure 10 is the schematic flow sheet of the assembly method of a kind of heat abstractor that the embodiment of the present invention two provides. As shown in Figure 10, the assembly method of the heat abstractor that the present embodiment provides specifically includes following steps:
S201, being welded on printed circuit board by card joint chair, wherein, one end towards printed circuit board of card joint chair is leg, and one end deviating from printed circuit board of card joint chair is the holding section that can engage with the leg of radiator;
S202, the leg of radiator is fastened in the holding section of card joint chair, so that radiator and printed circuit board are relatively fixed.
Concrete, the structure of card joint chair is consistent with the description in above-described embodiment one, it is possible to first welded with printed circuit board by the leg of card joint chair. Because the volume of card joint chair, quality and heat-sinking capability are all less, so when card joint chair is welded on printed circuit board, will not cause because thermal loss is too fast that failure welding phenomenon produces, it is possible to the welding quality between effective guarantee card joint chair and printed circuit board.
After having welded between card joint chair and printed circuit board, because card joint chair is provided with holding section, so the leg on radiator can directly connect and fix with holding section, so that radiator and card joint chair link together, and also can keep between radiator and printed circuit board being relatively fixed state.
Under normal circumstances, card joint chair can be made for metal material, because radiator is also made up of metal, so radiator, can turn between card joint chair and printed circuit board, now can be arranged to the ground wire of ground connection on a printed circuit board, to realize the grounding function of radiator.
On the basis of previous embodiment, as the optional embodiment of one, the holding section of card joint chair is generally the cavity with opening, and heat radiator stabilizer blades can be fastened on wherein by this cavity. The schematic flow sheet of the another kind of heat abstractor assembly method that Figure 11 provides for the embodiment of the present invention two. As shown in figure 11, on the basis of the embodiment shown in Figure 10, step S202 specifically can include following content:
S203, being fastened in the hollow cavity with opening of card joint chair by the leg of radiator, wherein, the radial dimension of the end of leg is more than the radial dimension of leg root.
Because the holding section of card joint chair is the hollow cavity with opening, so can end bigger for the radial dimension of leg be snapped in this hollow cavity by opening, and the root of leg is comparatively elongated, so that whole leg is a hammer head shape, after end snaps in cavity 1, end is because of the restriction of own form, it is difficult to extract from hollow cavity, so that keep between radiator with card joint chair being firmly connected.
In the present embodiment, the assembly method of heat abstractor specifically includes and is first welded on printed circuit board by card joint chair, wherein, one end towards printed circuit board of card joint chair is leg, and one end deviating from printed circuit board of card joint chair is the holding section that can engage with the leg of radiator; The leg of radiator is fastened in the holding section of card joint chair again, so that radiator and printed circuit board are relatively fixed. So while fixing on a printed circuit board by radiator, will not cause because thermal loss is too fast that failure welding phenomenon produces, it is possible to be effectively ensured assembling and welding quality.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit;Although the present invention being described in detail with reference to foregoing embodiments, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein some or all of technical characteristic is carried out equivalent replacement; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (13)
1. a heat abstractor, is arranged on a printed circuit board, it is characterised in that include radiator and card joint chair;
Described radiator includes radiator body and fixes the leg being connected with described radiator body, and described leg is positioned at the side towards described printed circuit board of described radiator body;
First end of described card joint chair is holding section, and described card joint chair the second end has leg, the end of described leg and the clamping of described holding section, and described leg welds with described printed circuit board.
2. heat abstractor according to claim 1, it is characterised in that described holding section is the hollow cavity with opening, the radial dimension of the end of described leg is more than the radial dimension of root, to pass described opening and to be fastened in described hollow cavity.
3. heat abstractor according to claim 2, it is characterized in that, the stage casing of described hollow cavity or the position of close described opening are inwardly recessed, so that described hollow cavity is the end little shape of big mouth, when described hollow cavity is inserted in the end of described leg, the end of described leg is bottom described hollow cavity and between the position being inwardly recessed.
4. heat abstractor according to claim 3, it is characterized in that, offering gap on the sidewall of described hollow cavity, the bearing of trend in described gap is consistent with the direction of insertion of described leg end portions, so that described hollow cavity struts along described gap when being inserted by described leg end portions.
5. the heat abstractor according to any one of claim 2-4, it is characterised in that be provided with holding division on the medial wall of described hollow cavity, the end of described leg is limited in bottom described hollow cavity and between described holding division.
6. heat abstractor according to claim 5, it is characterized in that, described holding division is the annular projection being positioned on described hollow cavity medial wall, and the protrusion direction of described annular projection is inside described hollow cavity, and the axis direction of described annular projection is towards the card set direction of described leg.
7. heat abstractor according to claim 5, it is characterised in that described holding division is the salient point being positioned on described hollow cavity medial wall, and the protrusion direction of described salient point is inside described hollow cavity.
8. the heat abstractor according to any one of claim 2-4, it is characterised in that the end of described card base is hammer head shape.
9. the heat abstractor according to any one of claim 2-4, it is characterised in that described leg and described card joint chair are multiple, described leg is identical with the quantity of described card joint chair and one_to_one corresponding.
10. the heat abstractor according to any one of claim 2-4, it is characterised in that described hollow cavity is thin-wall construction.
11. according to the heat abstractor described in any one of claim 2-4, it is characterised in that described card joint chair is metal card joint chair.
12. a heat abstractor assembly method, it is characterised in that including:
Being welded on printed circuit board by card joint chair, wherein, one end towards described printed circuit board of described card joint chair is leg, and one end deviating from described printed circuit board of described card joint chair is the holding section that can engage with the leg of radiator;
The leg of described radiator is fastened in the holding section of described card joint chair, so that described radiator and described printed circuit board are relatively fixed.
13. heat abstractor assembly method according to claim 12, it is characterised in that the described leg by described radiator is fastened in the holding section of described card joint chair, specifically includes:
Being fastened on by the leg of described radiator in the hollow cavity with opening of described card joint chair, wherein, the radial dimension of the end of described leg is more than the radial dimension of described leg root.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610078958.1A CN105682338A (en) | 2016-02-04 | 2016-02-04 | Radiating apparatus and assembling method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610078958.1A CN105682338A (en) | 2016-02-04 | 2016-02-04 | Radiating apparatus and assembling method therefor |
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| Publication Number | Publication Date |
|---|---|
| CN105682338A true CN105682338A (en) | 2016-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610078958.1A Pending CN105682338A (en) | 2016-02-04 | 2016-02-04 | Radiating apparatus and assembling method therefor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107592751A (en) * | 2017-09-18 | 2018-01-16 | 广东欧珀移动通信有限公司 | A kind of circuit board assemblies and preparation method thereof, contact pin component, mobile terminal |
| CN107749570A (en) * | 2017-10-13 | 2018-03-02 | 广州冠电电子科技有限公司 | Cabinet door fixing device and switch cubicle are used in a kind of switch cubicle maintenance |
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| CN1360461A (en) * | 2000-12-21 | 2002-07-24 | 富准精密工业(深圳)有限公司 | Heat radiator assembly and its assembling method |
| CN201491441U (en) * | 2009-05-27 | 2010-05-26 | 英业达股份有限公司 | Radiator structure |
| CN202841813U (en) * | 2012-09-20 | 2013-03-27 | 中兴通讯股份有限公司 | Radiator fixing device |
| US20130255929A1 (en) * | 2012-04-03 | 2013-10-03 | Foxconn Technology Co., Ltd. | Heat dissipation device |
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| CN1360461A (en) * | 2000-12-21 | 2002-07-24 | 富准精密工业(深圳)有限公司 | Heat radiator assembly and its assembling method |
| CN201491441U (en) * | 2009-05-27 | 2010-05-26 | 英业达股份有限公司 | Radiator structure |
| US20130255929A1 (en) * | 2012-04-03 | 2013-10-03 | Foxconn Technology Co., Ltd. | Heat dissipation device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107592751A (en) * | 2017-09-18 | 2018-01-16 | 广东欧珀移动通信有限公司 | A kind of circuit board assemblies and preparation method thereof, contact pin component, mobile terminal |
| CN107749570A (en) * | 2017-10-13 | 2018-03-02 | 广州冠电电子科技有限公司 | Cabinet door fixing device and switch cubicle are used in a kind of switch cubicle maintenance |
| CN107749570B (en) * | 2017-10-13 | 2019-04-23 | 广州冠电电子科技有限公司 | A kind of switchgear maintenance cabinet door fastening device and switchgear |
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