CN209017386U - The fastening structure of metal shell and pcb board - Google Patents
The fastening structure of metal shell and pcb board Download PDFInfo
- Publication number
- CN209017386U CN209017386U CN201821495718.2U CN201821495718U CN209017386U CN 209017386 U CN209017386 U CN 209017386U CN 201821495718 U CN201821495718 U CN 201821495718U CN 209017386 U CN209017386 U CN 209017386U
- Authority
- CN
- China
- Prior art keywords
- pcb board
- stud
- metal shell
- fastening structure
- hole
- Prior art date
- 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.)
- Expired - Fee Related
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- Mounting Of Printed Circuit Boards And The Like (AREA)
Abstract
The utility model provides the fastening structure of a kind of metal shell and pcb board, including metal shell, pcb board and stud, and the stud welding is provided with through-hole on pcb board on metal shell, flat head screw passes through on through-hole and locking stud.The fastening structure of metal shell and pcb board described in the utility model, by by stud welding on pcb board, through-hole is provided on metal shell, the mode that flat head screw passes through through-hole and is locked on stud, overcome the defect of fastening structure in the prior art, it can effectively prevent striker, save pcb board area, when fastening facilitates operation.
Description
Technical field
The utility model relates to fastening structure technical field more particularly to the fastening structures of a kind of metal shell and pcb board.
Background technique
In order to preferably inhibit EMI(Electro Magnetic Interference, electromagnetic interference), effectively cutting EMI
Propagation path, it is a kind of selection well that product, which is placed in metal shell,.
As shown in Figure 1, the fastening structure of metal shell and pcb board includes: metal shell 11, pcb board 12 and stud 13, spiral shell
Column 13 is riveted on metal shell 11, is provided on pcb board 12 through-hole (not identifying in figure), and screw assemblies 14 pass through the through-hole
It is locked with the stud 13 being riveted on metal shell 11.That is, be first riveted on stud 13 on the bottom plate of metal shell 11,
The PCB(Printed Circuit Board of device, printed circuit board will be assembled again) plate 12 is placed on stud 13, then
Pcb board 12 is fixed in the top surface screw assemblies 14 of pcb board 12, finally fixes upper cover installation.
But in assembling fastener cycle, the stud 13 being riveted on metal shell 11 is easy to touch the bottom of pcb board 12
Layer surface-mounted device, is damaged, or even knocked so as to cause the bottom layer of patches device of pcb board 12, tests after the completion of assembling product
When the product that has can note abnormalities, some products occur abnormal in client's use process, increase the subsequent maintenance dimension of product
Protect cost.
Also, with the update of product, the miniaturization of small product size is imperative.The stud being riveted on Outer Bottom Plating
The space of pcb board bottom surface should be occupied, screw assemblies will be fixed on the front of pcb board when assembling, and it is positive to occupy pcb board again
Space is unfavorable for product miniaturization.
Utility model content
For this purpose, the technical problem to be solved by the utility model is to provide the fastening knots of a kind of metal shell and pcb board
Structure can effectively prevent striker to overcome the defect of fastening structure in the prior art, save pcb board area, and when fastening facilitates behaviour
Make.
Then, the utility model provides the fastening structure of a kind of metal shell and pcb board, including metal shell, pcb board
And stud, the stud welding are provided with through-hole on pcb board on metal shell, flat head screw passes through through-hole and locking stud
On.
Wherein, the pad for welding screw is provided on the pcb board, stud is welded on pcb board by Reflow Soldering.
The stud welding is at the back side of pcb board.
The fastening structure of metal shell and pcb board described in the utility model, by by stud welding on pcb board, metal
Through-hole is provided on shell, the mode that flat head screw passes through through-hole and is locked on stud overcomes fastening knot in the prior art
The defect of structure, can effectively prevent striker, save pcb board area, and when fastening facilitates operation.
Detailed description of the invention
Fig. 1 is the schematic diagram of metal shell and pcb board fastening structure in the prior art；
Fig. 2 is the schematic diagram of metal shell and pcb board fastening structure described in the utility model embodiment；
Fig. 3 is the structural schematic diagram of stud shown in Fig. 2；
Fig. 4 is stud outer diameter and inner diameter scale diagrams shown in Fig. 3.
Specific embodiment
In the following, the utility model is described in detail in conjunction with attached drawing.
As shown in Fig. 2, present embodiments providing the fastening structure of a kind of metal shell and pcb board, comprising: metal shell
21, pcb board 22 and stud 23.
Wherein, stud 23 is welded on pcb board 22, and through-hole (not identifying in figure), tack spiral shell are provided on metal shell 21
Silk 24 passes through through-hole and is locked on stud 23.
The pad (not identifying in figure) for welding screw 23 is provided on pcb board 22, stud 23 is welded by Reflow Soldering
On pcb board 22.
Stud 23 is welded on the back side of pcb board 22.The threaded hole 25 that flat head screw 24 matches is set in stud 23.
As shown in Figure 3 and Figure 4, the diameter of stud be 4.5mm, height H1 according to pcb board thickness can appropriate adjustment, to be inserted into
The position portion of stud in pcb board；The region of outer diameter 6.5mm and internal diameter 4.5mm are the welding portion of stud；Height H2 according to
Product requirement is designed, and stud is reflow soldering process, it is proposed that not superelevation 5mm.
PCBA(Printed Circuit Board Assembly, PCB hollow plate passes through SMT piece uploading, using DIP plug-in unit
Entire processing procedure) when, stud 23 and bottom layer of patches device together patch are crossed into Reflow Soldering and directly welded, then will be entire
Pcb board 22 after the completion of PCBA is placed into metal shell 21, in the outside of metal shell 21 with flat head screw 24 by metal shell
21 and stud 23 be fastened and fixed, finally lock upper cover.
Fastening structure described in the present embodiment, stud welding is near pcb board bottom layer of patches device, and on monolith pcb board
Uniform welding at least 3 or more, since stud is higher than surface-mounted device, it can effectively prevent pcb board bottom surface patch during PCBA
Device is damaged, and can effectively prevent to be damaged after the completion of PCBA toward pcb board bottom surface surface-mounted device when casing installation.
Fastening structure described in the present embodiment, stud welding pcb board reverse side, since stud is fixed in pcb board
Length is smaller than pcb board thickness, and top layer can also place the biggish device of volume, and the plate face utilization rate of PCB is made to reach best.
Fastening structure described in the present embodiment, stud can be welded with the mode of Reflow Soldering, easy to process.
In conclusion the fastening structure of metal shell and pcb board described in the present embodiment, by by stud welding in pcb board
On, through-hole is provided on metal shell, the mode that flat head screw passes through through-hole and is locked on stud overcomes in the prior art
The defect of fastening structure, can effectively prevent striker, save pcb board area, and when fastening facilitates operation.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (3)
1. the fastening structure of a kind of metal shell and pcb board, including metal shell, pcb board and stud, which is characterized in that described
Stud welding is provided with through-hole on pcb board on metal shell, flat head screw passes through on through-hole and locking stud.
2. fastening structure according to claim 1, which is characterized in that be provided on the pcb board for welding screw
Pad, stud are welded on pcb board by Reflow Soldering.
3. fastening structure according to claim 1, which is characterized in that the stud welding is at the back side of pcb board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821495718.2U CN209017386U (en) | 2018-09-13 | 2018-09-13 | The fastening structure of metal shell and pcb board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821495718.2U CN209017386U (en) | 2018-09-13 | 2018-09-13 | The fastening structure of metal shell and pcb board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209017386U true CN209017386U (en) | 2019-06-21 |
Family
ID=66832917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821495718.2U Expired - Fee Related CN209017386U (en) | 2018-09-13 | 2018-09-13 | The fastening structure of metal shell and pcb board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209017386U (en) |
-
2018
- 2018-09-13 CN CN201821495718.2U patent/CN209017386U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190621 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |