CN207454503U - A kind of captive screw - Google Patents
A kind of captive screw Download PDFInfo
- Publication number
- CN207454503U CN207454503U CN201721006172.5U CN201721006172U CN207454503U CN 207454503 U CN207454503 U CN 207454503U CN 201721006172 U CN201721006172 U CN 201721006172U CN 207454503 U CN207454503 U CN 207454503U
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- CN
- China
- Prior art keywords
- screw
- screw rod
- riveting sleeve
- spring
- captive
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Abstract
The utility model discloses a kind of captive screw, including screw, riveting sleeve and spring；The screw includes screw head and screw rod, and the riveting sleeve is equipped with the perforation passed through for screw rod；The screw rod is equipped with threaded portion, and anti-falling piece is equipped between the threaded portion and the riveting sleeve.The utility model between threaded portion and riveting sleeve by setting anti-falling piece, screw rod is not only prevented from riveting sleeve to depart from, in addition the gap size of screw rod and perforated side wall is also increased, increase the swing angle of screw rod, and then the screw-in angle of screw is conveniently adjusted when in use to compensate build-up tolerance, increase the scope of application of product.
Description
Technical field
The utility model belongs to screw technique field, more particularly, to a kind of captive screw.
Background technology
Captive screw is also known as spring panel screw, does not take off screw, is chiefly used in the super thin metal plate of the industries such as communication, electronics
Be fastenedly connected, in use, captive screw presses on one piece of metallic plate of corresponding aperture first, pine is not then taken off into spiral shell
Nail is screwed on screwed another piece of metallic plate, to achieve the purpose that two pieces of metallic plates being fixed as one.Chinese patent
CN204186733U is disclosed《A kind of captive screw structure》, including fixing screws and riveted part, fixing screws include screw
Head and screw bar portion, screw bar portion are equipped with screw thread, and riveted part is provided through hole and is passed through for screw bar portion.
But under this kind of structure, screw bar portion and the gap very little through the inner wall of hole, cause screw rod can activity
Angle very little so as to which screw is when being fixed two pieces of metallic plates, can compensate for the installation error very little of matching hole, when two pieces
When error between the matching hole of metallic plate is larger, screw just can not be applicable in.
Utility model content
The utility model is in order to overcome the deficiencies of the prior art and provide a kind of captive screw applied widely.
To achieve these goals, the utility model uses following technical scheme：A kind of captive screw, including screw,
Riveting sleeve and spring；The screw includes screw head and screw rod, and the riveting sleeve is equipped with the perforation passed through for screw rod；The screw rod
Threaded portion is equipped with, anti-falling piece is equipped between the threaded portion and the riveting sleeve.The utility model realizes screw rod by anti-falling piece
Anticreep cooperation between perforation, has abandoned traditional structure that anticreep is carried out using threaded portion, so as to comparing traditional structure
Speech, the difference between the aperture and threaded portion of perforation can increase, the bigger that the aperture of perforation can be set so that perforation inner wall and spiral shell
Gap increase between bar so that the activity space increase of screw rod, the swingable angle increase of screw rod, and then to two metallic plates
It, also can be by adjusting the swing of screw rod even the matching hole on two metallic plates does not have accurate alignment when being fastenedly connected
Two pieces of metallic plates are fastened together by angle, and the installation error of matching hole on two metallic plate of effective compensation, the scope of application is more
Extensively.
Further, the anti-falling piece is the annulus being movably set on screw rod；Annulus is set on screw rod, annulus it is interior
Footpath is less than the diameter of threaded portion, and the outer diameter of annulus is more than the diameter of perforation, certain is moved to the direction away from riveting sleeve when screw
During one position, the both ends of annulus can be inconsistent with threaded portion and riveting sleeve inner wall respectively, and then threaded portion is prevented to be worn from perforation
It crosses, i.e., screw can not depart from away from riveting sleeve, due to the presence of annulus, bigger that the diameter of perforation can be set, and then
The gap between perforated side wall and screw rod is increased, increases the angle rotatable of screw, convenient for adjusting screw when in use
Angle is screwed in compensate rigging error.
Further, the riveting sleeve is equipped with and the matched accommodating chamber in threaded portion；When being not used, threaded portion and anticreep
Part is in accommodating chamber, and then is played a protective role to threaded portion and anti-falling piece.
Further, the spring is arranged between screw head and riveting sleeve, and the riveting sleeve is equipped with matched with spring
Limiting slot；Spring is set on screw rod, and one end offsets with screw head, and the other end offsets with limiting slot roof, when screw is screwed
Tightly when on sheet metal, spring is completely in limiting slot so that and overall structure is compacter, and since spring at this time is in
Compressive state is applied with screw head outside extruding force, so that threaded portion is mutually squeezed with sheet metal, screw is played
Anti-loose effect, and in knockout screw, when screwing out in place, screw under the force of a spring can out of sheet metal appliance for releasing single
Go out, process easy to disassemble.
Further, the screw rod is equipped with and the matched boss of spring；Due to being relatively large in diameter for boss, therefore the one of spring
End can be closely wrapped on boss, it is therefore prevented that spring moves on screw rod.
Further, the riveting sleeve is equipped with a circle flower tooth；When the flower tooth of riveting sleeve is pressed on sheet metal, flower tooth
End can be squeezed with the inner wall that heals up on sheet metal, and certain deformation occurs, and then riveting sleeve is fixed on on healing up,
And it since the frictional force between flower tooth and inner wall is larger, rotates when in use so effectively preventing riveting sleeve.
Further, the screw head lateral wall is equipped with anti-slip part；When turning screw, anti-slip part increases hand and screw head
Between frictional force, convenient for turning screw.
Further, the screw head is equipped with cross or yi word pattern groove；It is easy to use cross or minus screw
Knife carries out disassembling operations.
In conclusion the utility model not only prevents screw rod by setting anti-falling piece between threaded portion and riveting sleeve
Depart from from riveting sleeve, in addition also increase the gap size of screw rod and perforated side wall, increase the swing angle of screw rod, and then
The screw-in angle of screw is conveniently adjusted when in use to compensate build-up tolerance, increases the scope of application of product.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Fig. 2 is the sectional view of the utility model.
Fig. 3 is the assembling schematic diagram of the utility model.
Specific embodiment
It is real below in conjunction with the utility model in order to which those skilled in the art is made to be better understood from the utility model
The attached drawing in example is applied, clear, complete description is carried out to the technical scheme in the embodiment of the utility model.
As shown in Figs. 1-3, a kind of captive screw, including screw 1, riveting sleeve 2 and spring 3, the screw 1, riveting sleeve 2
And spring 3 is all made of stainless steel material, riveting sleeve 2 is cylindrical, and the screw 1 includes screw head 11 and screw rod 12, the riveting
Female connector is equipped with the perforation 21 passed through for screw rod 12, and the diameter of the screw head 11 is more than the diameter of perforation 21, on the screw rod 12
Threaded portion 121 is equipped with through one end of perforation 21, specifically, the threaded portion is the boss for being arranged on 12 afterbody of screw rod, boss
Surface vehicle be formed with external connection screw, screw comes off from riveting sleeve in order to prevent, the threaded portion 121 and perforation 21 between set
Anti-falling piece 4 is equipped with, specifically, the anti-falling piece is the stainless steel annulus being movably set on screw rod 12, the internal radius
Less than 121 diameter of threaded portion, the annulus outer diameter is more than 21 diameters of perforation, therefore annulus can be between threaded portion 121 and riveting sleeve 2
Slide, when screw 1 moves to a certain position away from riveting sleeve 2, the upper and lower ends face of annulus respectively with threaded portion 121 and riveting
It covers 2 inconsistent, and then screw is prevented to continue to move, it is therefore prevented that screw comes off from riveting sleeve, further, since annulus is deposited
, so the bigger that the diameter of perforation can be set, and then increase gap size between perforated side wall and screw rod so that screw rod energy
The angle bigger enough swung, when being fastenedly connected with this captive screw to two sheet metals, by adjusting the rotation of screw rod
Enter angle, can effectively compensate the installation error of matching hole on sheet metal, further increase the scope of application.
Preferably, the riveting sleeve 2 is equipped with and 4 matched accommodating chamber 23 of threaded portion 121 and anti-falling piece, the receiving
Chamber 23 is the cylinder shape groove being arranged on the one end of riveting sleeve 2 away from screw head 11, and the diameter of groove is more than the diameter of perforation,
When being not used, threaded portion 121 and anti-falling piece 4 are in groove, reduce the volume of entire captive screw, and then are reduced
Occupied space, while play the role of protecting threaded portion 121 and anti-falling piece 4.
Screw occurs situation about loosening when tightening in order to prevent, and spring 3 is provided between screw head 11 and riveting sleeve 2,
Riveting sleeve 2, which is equipped with, to be set in 3 matched limiting slot 22 of spring, the spring 3 on screw rod, and the limiting slot is to be arranged on
Cylinder shape groove of the riveting sleeve on screw head one end, the diameter of the spring 3 are less than the interior of 11 diameter of screw head and limiting slot 22
Footpath, the diameter of the spring 3 are more than the diameter of perforation 21, and when screw and when being tightened on sheet metal, spring 3 is all compressed
In limiting slot 22 so that overall structure is more stablized, since spring 3 is in compressive state at this time, so spring 3 applies screw head 11
Added with extruding force, since screw rod and screw head link together, so the screw thread on screw rod under the action of extruding force with metallic plate
It mutually squeezes, and then plays locking effect, in addition when dismounting screw, when screwing out operation in place, screw is in spring
The lower energy automatic spring of effect, process easy to disassemble.Preferably, spring is free to slide on screw rod in order to prevent, in the screw rod
12 be equipped with 3 matched boss 122 of spring, due to being relatively large in diameter for boss 122, therefore the bottom of spring can closely be wound
On the surface of boss 122, effectively prevent spring and moved on screw rod.
Preferably, the riveting sleeve is equipped with a circle flower tooth 24, when the flower tooth of riveting sleeve is pressed on sheet metal, flower tooth
End can be squeezed with the inner wall that heals up on sheet metal, and certain deformation occurs, and then riveting sleeve is fixed on on healing up,
And it since the frictional force between flower tooth and inner wall is larger, rotates when in use so effectively preventing riveting sleeve.In addition exist
The bottom of riveting sleeve is additionally provided with flange 25, and before flower tooth is pressed in matching hole, flange play the guiding role, and can closely be fastened on
On sheet metal, it is mounted on so that riveting sleeve 2 is more stable in matching hole.
Further, 11 lateral wall of screw head is equipped with anti-slip part, specifically, the anti-slip part is to be arranged on screw head 11
Straight knurling on lateral wall；In other embodiment, the anti-slip part is alternatively the twill rolling being arranged on 11 border of screw head
Flower；When tightening screw, anti-slip part increases the frictional force between hand and screw head, and then convenient for turning screw.
Further, the screw head 11 is equipped with cross or yi word pattern groove, is easy to use cross or minus screw
Knife carries out disassembling operations so that dismounting is more effortless.
Specifically, when the captive screw of the utility model is used to carry out fastening thread connection to two sheet metals, it is first
First captive screw is pressed on one piece of metallic plate of corresponding aperture, is then screwed into captive screw screwed another
On block metallic plate, so that it may two sheet metal fastening threads are linked together, also, since the pine of the utility model does not take off screw rod
Swing angle it is larger, even so when the matching hole on two sheet metals does not have perfectly aligned, also can be by adjusting screw
Screw-in angle, to compensate the installation error of two matching holes, and then the fastening of two sheet metals is screwed together.
As shown in figure 3, during assembling captive screw, pass through 5 punching press captive screw of pressing mold so that it is poured to metallic plate
On anvil, concrete principle is the prior art, is repeated no more.
Obviously, described embodiment is only the part of the embodiment of the utility model, instead of all the embodiments.
Based on the embodiment in the utility model, what those of ordinary skill in the art were obtained without making creative work
Every other embodiment should all belong to the scope of the utility model protection.
Claims (8)
1. a kind of captive screw, including screw（1）, riveting sleeve（2）And spring（3）；The screw（1）Including screw head（11) and
Screw rod（12）, the riveting sleeve（2）It is equipped with for screw rod（12）The perforation passed through（21）；It is characterized in that：The screw rod（12）
It is equipped with threaded portion（121）, the threaded portion（121）With the riveting sleeve（2）Between be equipped with anti-falling piece（4）.
2. captive screw according to claim 1, it is characterised in that：The anti-falling piece（4）It is described to be movably set in
Screw rod（12）On annulus.
3. captive screw according to claim 1, it is characterised in that：The riveting sleeve（2）It is equipped with and the screw thread
Portion（121）Matched accommodating chamber（23）.
4. captive screw according to claim 1, it is characterised in that：The spring（3）Arranged on screw head（11) with riveting
Set（2）Between, the riveting sleeve（2）It is equipped with and spring（3）Matched limiting slot（22）.
5. captive screw according to claim 1, it is characterised in that：The screw rod（12）It is equipped with and spring（3）Phase
The boss of cooperation（122）.
6. captive screw according to claim 1, it is characterised in that：The riveting sleeve（2）It is equipped with a circle flower tooth
（24）.
7. captive screw according to claim 1, it is characterised in that：The screw head（11）Lateral wall is equipped with straight burr
Flower.
8. captive screw according to claim 1, it is characterised in that：The screw head（11）It is equipped with a cross or word
Type groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721006172.5U CN207454503U (en) | 2017-08-12 | 2017-08-12 | A kind of captive screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721006172.5U CN207454503U (en) | 2017-08-12 | 2017-08-12 | A kind of captive screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207454503U true CN207454503U (en) | 2018-06-05 |
Family
ID=62249149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721006172.5U Active CN207454503U (en) | 2017-08-12 | 2017-08-12 | A kind of captive screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207454503U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111963543A (en) * | 2020-07-15 | 2020-11-20 | 北京航天时代激光导航技术有限责任公司 | General quick mounting and dismounting front fastening device for laser inertial navigation equipment |
| CN113142901A (en) * | 2021-01-14 | 2021-07-23 | 苏州华瑞腾航空设备有限公司 | Flexible support and containment device |
-
2017
- 2017-08-12 CN CN201721006172.5U patent/CN207454503U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111963543A (en) * | 2020-07-15 | 2020-11-20 | 北京航天时代激光导航技术有限责任公司 | General quick mounting and dismounting front fastening device for laser inertial navigation equipment |
| CN113142901A (en) * | 2021-01-14 | 2021-07-23 | 苏州华瑞腾航空设备有限公司 | Flexible support and containment device |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |