CN206389601U - Aluminium base positioning stud fixed structure - Google Patents
Aluminium base positioning stud fixed structure Download PDFInfo
- Publication number
- CN206389601U CN206389601U CN201621458333.XU CN201621458333U CN206389601U CN 206389601 U CN206389601 U CN 206389601U CN 201621458333 U CN201621458333 U CN 201621458333U CN 206389601 U CN206389601 U CN 206389601U
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- CN
- China
- Prior art keywords
- positioning stud
- aluminium base
- plug division
- size
- fixing hole
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model provides a kind of aluminium base positioning stud fixed structure, for positioning stud mutually to be fixed with aluminium base, the fixed structure includes the weld-ring positioned at aluminium base plate surface, the non-metallic fixing hole positioned at weld-ring center and the first plug division below the positioning stud main body；The size of the periphery of first plug division is less than the size of the periphery of the main body of the positioning stud；The size of the inner circumferential of the fixing hole is more than the size of the periphery of the first plug division and is less than the size of the periphery of the main body of positioning stud, and height of the depth more than the first plug division of the fixing hole；The positioning stud is weldingly fixed in the way of the fixing hole that the first plug division inserts in aluminium base in aluminium base weld-ring.Positioning stud is fixed to aluminium base by the utility model by welding manner, is not only reduced the difficulty of processing of positioning stud, is reduced material and assembly cost, and automated production can be achieved, and positioning stud is difficult to release.
Description
Technical field
The utility model is related to PCBA board field, more specifically to a kind of aluminium base positioning stud fixed structure.
Background technology
In the electronics industry such as communication power supply, automobile DC-DC power supply, to solve PCBA heat dissipation problem, generally using aluminium
Substrate radiates to power device, then using contact pin technique by the circuit communication between power amplifier board and control panel, realizes single
Interconnected between plate.In order to realize being accurately positioned between control panel and aluminium base, prevent control panel from tilting, it is necessary to be installed additional on aluminium base
Positioning stud.
At present, the positioning stud on aluminium base is mainly fixed by the way of pressing, i.e., set logical on aluminium base
Hole, positioning stud (self-clinching stud) is fixed by being realized with the interference fit of above-mentioned through hole.Above-mentioned positioning stud fixed work order one
As be arranged at after SMT.
However, above-mentioned positioning stud presses there is problems with fixed form：1) to PCB and self-clinching standoff machining accuracy
It is required that it is higher, and the design of self-clinching standoff is complicated, need to increase annular knurl design, processing cost is higher；2) to riveting tool and equipment
Requirement it is higher, easily occur pressure partially, PCB blast holes, PCB layering etc. phenomenon；3) PCB layouts need control device and self-clinching stud
Distance, the design influence on high density layouts is larger；4) riveting intensity is not high, the phenomenon that self-clinching stud is released easily occurs；5) need
The special process that presses is set up, and a set of crimping apparatus and frock need to be increased, causes machining period and equipment cost increase.
Utility model content
The technical problems to be solved in the utility model is, is pressed machining accuracy in fixed form for above-mentioned positioning stud
It is required that it is high, high is required to frock, there is provided a kind of new aluminium base positioning stud fixed structure for the low problem of efficiency.
The technical scheme that the utility model solves above-mentioned technical problem is to provide a kind of aluminium base positioning stud fixed knot
Structure, for positioning stud mutually to be fixed with aluminium base, the fixed structure is including the weld-ring positioned at aluminium base plate surface, positioned at described
The non-metallic fixing hole in weld-ring center and the first plug division below the positioning stud main body；Described first inserts
The size of the periphery of socket part is less than the size of the periphery of the main body of the positioning stud；The size of the inner circumferential of the fixing hole is more than the
The size of the periphery of one plug division and less than positioning stud main body periphery size, and the fixing hole depth be more than first
The height of plug division；The positioning stud is weldingly fixed on aluminium base in the way of the fixing hole that the first plug division inserts in aluminium base
On.
In aluminium base positioning stud fixed structure described in the utility model, the fixing hole and the first plug division are
Cylinder, and external diameter big 0.08~0.2mm of the internal diameter than the first plug division of the fixing hole.
In aluminium base positioning stud fixed structure described in the utility model, the external diameter of the weld-ring and the difference of internal diameter are big
In 3mm.
In aluminium base positioning stud fixed structure described in the utility model, the top tool of the main body of the positioning stud
There are the second plug division, and the size of periphery of the size less than the main body of positioning stud of the periphery of second plug division.
In aluminium base positioning stud fixed structure described in the utility model, the bottom part body of the positioning stud and weldering
The thickness of print solder paste between ring is more than or equal to 0.5mm.
In aluminium base positioning stud fixed structure described in the utility model, the bottom part body of the positioning stud and weldering
It is unilateral compared with weld-ring outer that tin cream between ring is printed onto mesh corresponding with weld-ring in aluminium base plate surface, and the steel mesh by steel mesh
Expand and be more than or equal to 0.5mm.
Aluminium base positioning stud fixed structure of the present utility model has the advantages that：It will be positioned by welding manner
Stud is fixed to aluminium base, not only reduces the machining accuracy of positioning stud, reduces processing cost, and positioning stud is difficult
Release.Also, the utility model can be realized using automation paster, disposably be flowed back with other surface mounting components, so as to save significantly
Machining period and processing cost are saved, processing efficiency is improved.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model aluminium base positioning stud fixed structure embodiment.
Fig. 2 is the schematic diagram of positioning stud embodiment in the utility model aluminium base positioning stud fixed structure.
Fig. 3 is schematic diagram of the aluminium base at fixing hole in the utility model aluminium base positioning stud fixed structure.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only to explain
The utility model, is not used to limit the utility model.
As Figure 1-3, it is the schematic diagram of the utility model aluminium base positioning stud fixed structure embodiment, the fixed knot
Structure is used to aluminium base 10 mutually fix positioning stud 20.Fixed structure in the present embodiment is included positioned at the surface of aluminium base 10
Weld-ring 12, the non-metallic fixing hole 11 positioned at the center of weld-ring 12 and the lower section of main body 21 first positioned at positioning stud 20 are inserted
Socket part 22.
The shape of above-mentioned fixing hole 11 and the form fit of the periphery of the first plug division 22.The periphery of first plug division 22
Size is less than the size of the periphery of the main body 21 of the positioning stud 20；The size of the inner circumferential of fixing hole 11 is more than the first plug division 22
Periphery size and less than positioning stud 20 main body 21 periphery size, and the fixing hole 11 depth be more than first insert
The height of socket part 22；It can be plugged into fixing hole 11, and keep relative stability so as to the first plug division 22 of positioning stud 20.It is fixed
First plug division 22 of position stud 20 inserts in the fixing hole 11 of aluminium base 10 and is welded on by scolding tin 30 on aluminium base 10, and leads to
Cross the fixation which realizes positioning stud 20.
Positioning stud 20 is connected by scolding tin 30 with the weld-ring 12 on aluminium base 10.
Positioning stud 20 is fixed to aluminium base 10 by above-mentioned aluminium base positioning stud fixed structure by welding manner, not only
Machining accuracy, the reduction processing cost of positioning stud 20 can be reduced, and positioning stud 20 is difficult to release, and avoid to press and lead
The bad phenomenons such as aluminium base holes, the layering of cause.
For ease of processing, the first plug division 22 on fixing hole 11 and positioning stud 20 on above-mentioned aluminium base 10 is circle
(certainly in actual applications, the plug division 22 of fixing hole 11 and first can also use other shapes, such as quadrangular, six ribs to cylindricality
Cylindricality etc.), it is positioned such that the first plug division 22 on stud 20 can be directly by turnery processing (tolerance can be in 0~0.05mm).
To ensure fixed stability, the internal diameter of fixing hole 11 than the first plug division 22 the big 0.08~0.2mm of external diameter (most preferably
0.1mm or so).
To increase the weld-ring 12 being made up of copper sheet and the bonding strength of the dielectric layer on aluminium base 10, weld-ring 12 and dielectric layer
Contact area should be as big as possible, such as external diameter of weld-ring 12 and the difference of internal diameter are more preferably greater than 3mm.
For ease of the connection of aluminium base 10 and control panel, the top of the main body 21 of above-mentioned positioning stud 20 also can be set second
Plug division 23, and the size of periphery of the size less than the main body 21 of positioning stud 20 of the periphery of second plug division 23.Especially
Ground, the second plug division 23 can be used and the identical shape and size of the first plug division 22.
To ensure reliable welding, the thickness of the tin cream 40 between the bottom of main body 21 of positioning stud 20 and weld-ring 12 is preferably big
In or equal to 0.5mm (tin cream 40 is through reflow treatment formation scolding tin 30).Especially, the bottom of main body 21 of positioning stud 20 and weld-ring
Tin cream 40 between 12 can be printed onto aluminium base plate surface by steel mesh (thickness of steel mesh is more than or equal to 0.5mm), and on steel mesh
Mesh corresponding with weld-ring is more than or equal to 0.5mm compared with weld-ring externally expanding single edge.
By said structure, welding positioning stud 20 can be realized using automation paster technique, i.e., will first be welded using steel mesh
Tin is printed onto the surface of the weld-ring 12 of aluminium base 10, is then disposably flowed back with other surface mounting components.By the above-mentioned means, can save
Press process and the equipment that presses are gone, machining period and processing cost is saved, substantially increases processing efficiency.
It is described above, only the utility model preferably embodiment, but protection domain of the present utility model is not
This is confined to, any one skilled in the art can readily occur in the technical scope that the utility model is disclosed
Change or replacement, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should
It is defined by scope of the claims.
Claims (6)
1. a kind of aluminium base positioning stud fixed structure, for positioning stud mutually to be fixed with aluminium base, it is characterised in that：It is described
Fixed structure includes the weld-ring positioned at aluminium base plate surface, the non-metallic fixing hole positioned at weld-ring center and positioned at institute
State the first plug division below positioning stud main body；The size of the periphery of first plug division is less than the main body of the positioning stud
Periphery size；The size of the inner circumferential of the fixing hole is more than the size of the periphery of the first plug division and less than positioning stud
The size of the periphery of main body, and height of the depth more than the first plug division of the fixing hole；The positioning stud is with the first grafting
The mode that portion inserts in the fixing hole of aluminium base is weldingly fixed on aluminium base.
2. aluminium base positioning stud fixed structure according to claim 1, it is characterised in that：The fixing hole and first is inserted
Socket part is cylinder, and external diameter big 0.08~0.2mm of the internal diameter than the first plug division of the fixing hole.
3. aluminium base positioning stud fixed structure according to claim 1, it is characterised in that：The external diameter of the weld-ring and interior
The difference in footpath is more than 3mm.
4. aluminium base positioning stud fixed structure according to claim 1, it is characterised in that：The main body of the positioning stud
Top have the second plug division, and the periphery of second plug division size be less than positioning stud main body periphery chi
It is very little.
5. aluminium base positioning stud fixed structure according to claim 1, it is characterised in that：The main body of the positioning stud
Print solder paste thickness between bottom and weld-ring is more than or equal to 0.5mm.
6. aluminium base positioning stud fixed structure according to claim 1, it is characterised in that：The main body of the positioning stud
Tin cream between bottom and weld-ring is printed onto mesh corresponding with weld-ring in aluminium base plate surface, and the steel mesh by steel mesh and relatively welded
Ring externally expanding single edge is more than or equal to 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621458333.XU CN206389601U (en) | 2016-12-28 | 2016-12-28 | Aluminium base positioning stud fixed structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621458333.XU CN206389601U (en) | 2016-12-28 | 2016-12-28 | Aluminium base positioning stud fixed structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206389601U true CN206389601U (en) | 2017-08-08 |
Family
ID=59490512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621458333.XU Active CN206389601U (en) | 2016-12-28 | 2016-12-28 | Aluminium base positioning stud fixed structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206389601U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108601290A (en) * | 2018-03-30 | 2018-09-28 | 爱美达（深圳）热能系统有限公司 | A kind of method of small lot assembling fan and radiator |
-
2016
- 2016-12-28 CN CN201621458333.XU patent/CN206389601U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108601290A (en) * | 2018-03-30 | 2018-09-28 | 爱美达（深圳）热能系统有限公司 | A kind of method of small lot assembling fan and radiator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210517 Address after: 215000 52 tianedang Road, Yuexi, Wuzhong District, Suzhou City, Jiangsu Province Patentee after: SUZHOU HUICHUAN UNITED POWER SYSTEM Co.,Ltd. Address before: 518101 building e, Hongwei Industrial Zone, Liuxian 2nd Road, Baocheng 70 District, Bao'an District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN INOVANCE TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215000 52 tianedang Road, Yuexi, Wuzhong District, Suzhou City, Jiangsu Province Patentee after: Suzhou Huichuan United Power System Co.,Ltd. Address before: 215000 52 tianedang Road, Yuexi, Wuzhong District, Suzhou City, Jiangsu Province Patentee before: SUZHOU HUICHUAN UNITED POWER SYSTEM Co.,Ltd. |