CN212786006U - Countersunk head circuit board - Google Patents
Countersunk head circuit board Download PDFInfo
- Publication number
- CN212786006U CN212786006U CN202021559878.6U CN202021559878U CN212786006U CN 212786006 U CN212786006 U CN 212786006U CN 202021559878 U CN202021559878 U CN 202021559878U CN 212786006 U CN212786006 U CN 212786006U
- Authority
- CN
- China
- Prior art keywords
- countersunk head
- substrate
- protective
- screw
- clamping groove
- 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
Links
- 230000001681 protective effect Effects 0.000 claims abstract description 56
- 239000000758 substrate Substances 0.000 claims abstract description 19
- 239000011241 protective layer Substances 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 25
- 230000017525 heat dissipation Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 230000006978 adaptation Effects 0.000 description 3
- 125000003003 spiro group Chemical group 0.000 description 3
- RVCKCEDKBVEEHL-UHFFFAOYSA-N 2,3,4,5,6-pentachlorobenzyl alcohol Chemical compound OCC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl RVCKCEDKBVEEHL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Images
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- Helmets And Other Head Coverings (AREA)
Abstract
The invention relates to a countersunk head circuit board, which comprises a substrate, wherein the substrate is provided with a screw for locking and fixing the substrate, the upper side and the lower side of the substrate are respectively provided with a polygonal clamping groove and a circular accommodating groove, wherein the clamping groove is communicated with the holding tank through a counter bore with a polygonal section, the clamping groove, the holding tank and the side wall of the counter bore are all bonded with insulating protective layers, wherein a cap-shaped protective cap matched with the clamping groove is arranged in the clamping groove, a protective sleeve which penetrates through the counter sink and extends into the accommodating groove is arranged in the middle of the bottom of the protective cap, a circular ring which is sleeved at the bottom end of the protective sleeve and is in threaded connection with the thread is arranged in the accommodating groove, wherein the edge of the circular ring is downwards provided with a skirt edge which is flush with the bottom of the substrate, a spring is arranged in the skirt edge, the head of the screw is positioned in the opening of the protective cap, and the rod body of the screw sequentially penetrates through the protective sleeve and the inner diameter of the spring from top to bottom and extends to the lower part of the substrate. The invention has simple structure and convenient use.
Description
Technical Field
The invention relates to the field of circuit board preparation, in particular to a countersunk head circuit board.
Background
The development direction of the existing electric appliances is miniaturization and thinning, and a positioning hole fixing mode is adopted when the PCBA is installed. However, when a traditional circuit board is installed, the positioning hole is cylindrical, and when a fixing screw penetrates through the positioning hole, the head of the screw is exposed on the surface of the circuit board, so that the overall appearance is affected, and a certain space is occupied. The existing circuit board is usually fixed by screws, and the fixing mode inevitably causes the reduction of the insulating property of the circuit board due to the fact that metal particles enter between the circuit boards, and influences the yield of the circuit board.
A countersunk head circuit board disclosed in CN208480032U, which can solve the above problems, but has the following disadvantages, such as: because insert the countersunk head with insulating sleeve is simple downthehole, lead to driving its at the countersunk head internal rotation very easily in rotatory screw, thereby roll out it from the countersunk head, this has played negative effect to promoting insulating sleeve's installation environment, if bond insulating sleeve and solve this problem in the countersunk head, then difficult then take out it from the countersunk head is downthehole when changing insulating sleeve, again the screw on the screw hugs closely the insulating sleeve inside wall, the easy wearing and tearing insulating sleeve inside wall of large tracts of land when its screw is rotatory, thereby cause the influence to its insulating effect.
Disclosure of Invention
The invention aims to provide a countersunk head circuit board.
The technical problem of the invention is mainly solved by the following technical scheme:
a countersunk head circuit board comprises a substrate, wherein the substrate is provided with a screw for locking and fixing the substrate, the upper side and the lower side of the substrate are respectively provided with a polygonal clamping groove and a circular accommodating groove, the clamping groove and the accommodating groove are communicated through a countersunk hole with a polygonal cross section, the countersunk hole, the clamping groove and the accommodating groove are coaxially arranged, the side walls of the clamping groove, the accommodating groove and the countersunk hole are respectively bonded with an insulating protective layer, a cap-shaped protective cap matched with the clamping groove is arranged in the clamping groove, a protective sleeve penetrating through the countersunk hole and extending into the accommodating groove is arranged in the middle of the bottom of the protective cap, the upper half part of the protective sleeve is matched with the countersunk hole in size, the bottom end of the protective sleeve in the accommodating groove is of a cylindrical structure, threads are arranged on the outer side wall of the cylindrical structure of the protective sleeve, and a circular ring sleeved outside the bottom, wherein the ring border is provided with the shirt rim with base plate bottom parallel and level downwards, and is provided with the spring in the shirt rim, the head of screw is located the helmet opening, and the pole body of screw from top to bottom passes protective casing and spring internal diameter in proper order and extends to the base plate below.
Preferably, the protective cap and the protective sleeve are integrally arranged, the top end of the protective cap is lower than the horizontal plane of the top end of the substrate, and the bottom end of the protective sleeve is flush with the bottom end of the circular ring.
Preferably, an organic whole sets up between ring and the shirt rim, wherein ring and shirt rim are the plastics material and make.
Preferably, the base plate comprises line layer, insulating layer and the heat dissipation layer of range upon range of setting in order, the holding tank is located the line layer, the counter sink is located the insulating layer, the draw-in groove is located the heat dissipation layer.
Preferably, the shank of the screw comprises a smooth section located within the boot and a threaded section located below the boot.
Preferably, the diameter of the thread on the outer side wall of the lower half part of the protecting sleeve is smaller than the inner diameter of the counter bore.
The invention has the beneficial effects that:
1. when in with helmet embedding draw-in groove, the lag tube passes the counter sink and extends to the holding tank in the back, the polygonal draw-in groove lateral wall can block the lag tube lateral wall rather than the helmet lateral wall of looks adaptation, polygonal counter sink lateral wall can block rather than the lag tube lateral wall of looks adaptation to when preventing to rotate after passing the lag tube with the screw, can drive the helmet in the draw-in groove and lag tube at the counter sink internal rotation.
2. Owing to there are helmet and protective casing existence, and have great clearance between screw rod body and the holding tank lateral wall in the holding tank when the mounting screw for screw rod body lateral wall on the screw thread can not contact with draw-in groove, counter sink and the insulating layer on the holding tank inside wall, so just can not take place because of the easy wearing and tearing insulating layer of large tracts of land when its screw thread is rotatory, thereby cause the problem of influence to the insulating effect of insulating layer, more can take place simultaneously and see through the problem of its opening wearing and tearing base plate behind the screw wearing and tearing insulating layer lateral wall. After the screw is disassembled, the protective sleeve can be conveniently pulled out from the countersunk hole and the protective cap from the clamping groove for replacement and the like only by rotating the circular ring to rotate the circular ring out from the bottom end of the protective sleeve.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an exploded view of the present invention;
fig. 3 is a top view of the helmet of the present invention.
In the figure: 1. the protective sleeve comprises a substrate, 101, a circuit layer, 102, an insulating layer, 103, a heat dissipation layer, 2, a screw, 3, a clamping groove, 4, a counter bore, 5, a containing groove, 6, an insulating protective layer, 7, a protective cap, 8, a protective sleeve, 9, a ring, 10, a skirt edge, 11 and a spring.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
The utility model provides a countersunk head circuit board, includes base plate 1, is provided with on this base plate 1 and locks fixed screw 2 with it, both sides are provided with polygon draw-in groove 3 and circular holding tank 5 respectively about the base plate, wherein communicate for polygonal counter sink 4 through the cross-section between draw-in groove 3 and the holding tank 5, and coaxial setting between counter sink 4, draw-in groove 3 and the holding tank 5, and all bond on draw-in groove 3, holding tank 5 and counter sink 4 lateral walls and have insulating inoxidizing coating 6 in order to play insulating effect.
In this embodiment, the substrate 1 includes a circuit layer 101, an insulating layer 102, and a heat dissipation layer 103 stacked in sequence, the accommodating groove 5 is located on the circuit layer 101, the counter-bore 4 is located on the insulating layer 102, and the card slot 3 is located on the heat dissipation layer 103.
Wherein be provided with rather than looks adaptation cap form helmet 7 in the draw-in groove 3, and the department is provided with the lag tube 8 that passes counter bore 4 and extend to in the holding tank 5 in the middle of the 7 bottoms of helmet, and integrative setting between helmet 7 and the lag tube 8, and 7 tops of helmet are less than 1 top horizontal planes of base plate simultaneously, lag tube 8 bottom and ring 9 bottom parallel and level.
And the size of the upper half of the protective sleeve 8 is matched with the size of the counter sink 4, wherein the bottom end of the protective sleeve 8 in the accommodating groove 5 is of a tubular structure, threads are arranged on the outer side wall of the tubular structure of the protective sleeve 8, the diameter of each thread is smaller than the inner diameter of the counter sink 4, so that the bottom end of the protective sleeve 8 can smoothly penetrate through the counter sink 4 and extend into the accommodating groove 5, when the protective cap 7 is embedded into the clamping groove 3, and after the protective sleeve 8 penetrates through the counter sink 4 and extends into the accommodating groove 5, the side wall of the polygonal clamping groove 3 can clamp the outer side wall of the protective cap 7 matched with the protective sleeve, and the side wall of the polygonal counter sink 4 can clamp the outer side wall of the protective sleeve 8 matched with the protective sleeve, so that when the screw 2 is rotated after penetrating through the protective sleeve 8, the protective cap 7 can be driven to rotate in the clamping groove 3 and.
As shown in fig. 1, the screw body of the screw 2 includes a smooth section located in the protecting sleeve 8 and a threaded section located below the protecting sleeve, so that when the screw body of the screw 2 is threaded through the protecting sleeve 8 and a screw hole on a device, since the screw body of the screw 2 located in the protecting sleeve 8 is of a smooth structure, the smooth outer arc wall of the screw body is not easy to scratch the inner side wall of the protecting sleeve 8 when the screw body is rotated, and a larger gap is formed between the threaded section of the screw body of the screw 2 located below the protecting sleeve 8 and the side wall of the accommodating groove 5, so that the screw body is not easy to contact with the insulating protective layer 6 on the side wall of the accommodating groove 5, thereby improving the.
Owing to there are protective cap 7 and protective casing 8 existence when mounting screw 2, and have great clearance between 5 lateral walls of holding tank 5 interior screw 2 pole body and holding tank, make 2 screw threads of pole body lateral wall can not with draw-in groove 3, insulating inoxidizing coating 6 contact on counter sink 4 and the 5 inside walls of holding tank, the insulating inoxidizing coating 6 of easy large tracts of land when so can not take place because of its screw thread is rotatory, thereby cause the problem of influence to the insulating effect of insulating inoxidizing coating 6, more can take place simultaneously and see through the problem of its opening wearing and tearing base plate 1 behind the 6 lateral walls of insulating inoxidizing coating of 2 wearing and tearing of screw.
Simultaneously be provided with the overcoat in holding tank 5 in 8 bottoms of protective casing and the ring 9 of screw thread spiro union, wherein ring 9 border is provided with downwards with 1 bottom parallel and level shirt rim 10 of base plate, and be provided with the cover in the shirt rim 10 and put up the epaxial spring 11 of screw 2 pole, integrative the setting between ring 9 and the shirt rim 10 in this embodiment, wherein ring 9 and shirt rim 10 are the plastics material and make, the head of screw 2 is located 7 openings in the helmet, and the pole body of screw 2 from top to bottom passes protective casing 8 and the 11 internal diameters of spring in proper order and extends to base plate 1 below.
Install helmet 7 in draw-in groove 3, protect casing 8 insert behind the counter sink 4, place ring 9 in the holding tank 5 top department fixed with the screw thread spiro union of protect casing 8 bottom, make protect casing 8 be difficult for following the roll-off in counter sink 4 under receiving external force influence, shirt rim 10 once plays the effect of supporting ring 9 simultaneously, two then play the effect of protection to insulating inoxidizing coating 6, and overlap spring 11 at the pole of screw 2 back on one's body, shirt rim 10 prevents its displacement, extrude spring 11 after the screw spiro union with screw 2 and equipment fixing department and make its shrink, spring 11 can play buffering cushioning effect to base plate 1 when equipment takes place the vibration so.
After the screw 2 is detached, the protective sleeve 8 can be conveniently pulled out from the counter sink 4 and the protective cap 7 from the clamping groove 3 for replacement and the like only by rotating the ring 9 to rotate the protective sleeve out from the bottom end of the protective sleeve 8.
The present invention has been described in detail, but the above description is only a preferred embodiment of the present invention, and is not to be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (6)
1. A countersunk head circuit board comprises a substrate, wherein the substrate is provided with a screw for locking and fixing the substrate, the countersunk head circuit board is characterized in that the upper side and the lower side of the substrate are respectively provided with a polygonal clamping groove and a circular accommodating groove, the clamping groove is communicated with the accommodating groove through a countersunk head hole with a polygonal cross section, the countersunk head hole, the clamping groove and the accommodating groove are coaxially arranged, the side walls of the clamping groove, the accommodating groove and the countersunk head hole are all bonded with an insulating protective layer, a cap-shaped protective cap matched with the clamping groove is arranged in the clamping groove, a protective sleeve penetrating through the countersunk head hole and extending into the accommodating groove is arranged in the middle of the bottom of the protective cap, the upper half part of the protective sleeve is matched with the countersunk head hole in size, the bottom end of the protective sleeve in the accommodating groove is of a cylindrical structure, threads are arranged on the outer side wall of the cylindrical structure of the protective, wherein the ring border is provided with the shirt rim with base plate bottom parallel and level downwards, and is provided with the spring in the shirt rim, the head of screw is located the helmet opening, and the pole body of screw from top to bottom passes protective casing and spring internal diameter in proper order and extends to the base plate below.
2. The countersunk head circuit board of claim 1, wherein the protective cap is integrally provided with the protective sleeve, wherein the top end of the protective cap is lower than the level of the top end of the substrate, and the bottom end of the protective sleeve is flush with the bottom end of the circular ring.
3. The countersunk head circuit board of claim 1, wherein the ring and the skirt are integrally arranged, and are made of plastic materials.
4. The countersunk head circuit board of claim 1, wherein the substrate comprises a circuit layer, an insulating layer and a heat dissipation layer, which are sequentially stacked, the accommodating groove is located on the circuit layer, the countersunk head hole is located on the insulating layer, and the clamping groove is located on the heat dissipation layer.
5. The countersunk head circuit board of claim 1, wherein the shank of the screw comprises a smooth section located within the boot tube and a threaded section located below the boot tube.
6. The countersunk head circuit board of claim 1, wherein the diameter of the thread on the outer side wall of the lower half of the protective sleeve is smaller than the inner diameter of the countersunk hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021559878.6U CN212786006U (en) | 2020-07-31 | 2020-07-31 | Countersunk head circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021559878.6U CN212786006U (en) | 2020-07-31 | 2020-07-31 | Countersunk head circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212786006U true CN212786006U (en) | 2021-03-23 |
Family
ID=75049353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021559878.6U Expired - Fee Related CN212786006U (en) | 2020-07-31 | 2020-07-31 | Countersunk head circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212786006U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113941180A (en) * | 2021-11-15 | 2022-01-18 | 洛阳万基铝加工有限公司 | Automatic paper system that trades of aluminium foil mill filter |
-
2020
- 2020-07-31 CN CN202021559878.6U patent/CN212786006U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113941180A (en) * | 2021-11-15 | 2022-01-18 | 洛阳万基铝加工有限公司 | Automatic paper system that trades of aluminium foil mill filter |
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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: 20210323 |