CN204344619U - Self-locking tapping screw - Google Patents
Self-locking tapping screw Download PDFInfo
- Publication number
- CN204344619U CN204344619U CN201420825267.XU CN201420825267U CN204344619U CN 204344619 U CN204344619 U CN 204344619U CN 201420825267 U CN201420825267 U CN 201420825267U CN 204344619 U CN204344619 U CN 204344619U
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- screw
- locking
- plane
- slippage
- clamping block
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Abstract
The utility model discloses a kind of self-locking tapping screw, comprise screw head and screw rod, screw rod offers holding cavity, holding cavity is provided with internal thread, internal thread has been threaded locking framework, locking framework comprises rotary part, screw rod and trapezoid block, screw rod is provided with through hole, through hole is perpendicular to holding cavity, in through hole, slippage is connected with the clamping block arranged in opposite directions, clamping block is provided with the first inclined-plane, trapezoid block is provided with the second inclined-plane, first inclined-plane and the second inclined-plane abut against, expand outwardly when locking framework rotates the clamping block that can promote symmetrical setting, after screw completes and tightens, rotating rotary part again makes the locking framework be arranged in screw move toward screw head, the first inclined-plane be connected in through hole on clamping block by the second inclined-plane on the trapezoid block in locking framework and slippage is extruded mutually, promote clamping block to move outside screw, clamping block inserts in material, realize the double locking in axis and radial direction of whole screw, improve the fastening effect of whole screw.
Description
Technical field
The utility model relates to fastener areas, and more particularly, it relates to a kind of self-locking tapping screw.
Background technique
Tapping screw pitch thread is self-taped type, play self tapping effect, attaching nut is not needed to use, be generally used for nonmetal or softer metal, low hole and tapping need not be played, but do not need the fastening pieces such as attaching nut just because of tapping screw, therefore when colliding or shake, screw can loosen, and impact connects effect.
Model utility content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of self-locking tapping screw better to provide fastening effect.
For achieving the above object, the utility model provides following technological scheme:
A kind of self-locking tapping screw, comprise screw head and screw rod, described screw rod offers holding cavity, described holding cavity is connected and is connected with annular slotted, described annular slotted diameter is less than the diameter of holding cavity, described holding cavity is provided with internal thread, described internal thread has been threaded locking framework, described locking framework comprises rotary part, screw rod and trapezoid block, described trapezoid block can move in annular slotted, described screw rod is provided with through hole, described through hole is perpendicular to annular slotted, in described through hole, slippage is connected with the clamping block arranged in opposite directions, described clamping block is provided with the first inclined-plane, described trapezoid block is provided with the second inclined-plane, described first inclined-plane and the second inclined-plane abut against, the radial direction locking described screw is expanded outwardly when locking framework rotates the clamping block that can promote symmetrical setting.
Pass through technique scheme, after screw completes and tightens, rotating rotary part again makes the locking framework be arranged in screw move toward screw head, the first inclined-plane be connected in through hole on clamping block by the second inclined-plane on the trapezoid block in locking framework and slippage is extruded mutually, promote clamping block to move outside screw, clamping block inserts in material, realizes the double locking in axis and radial direction of whole screw, improves the fastening effect of whole screw.
As preferably, annular slotted and holding cavity joint form restraining position ring block, complete the locking of described screw when screw rod abuts to restraining position ring block.
By technique scheme, complete clamping block locking diametrically when the end face of screw rod in locking framework abuts to restraining position ring block surperficial, play the signal that a prompting completes locking.
As preferably, described through hole comprises slippage chamber and opening, the diameter in described slippage chamber is greater than the diameter of opening, described slippage chamber and opening in communication, described slippage chamber vertically and be communicated with annular slotted, described clamping block comprises contact pin, symmetrically arranged slippage projection and contact block, described symmetrically arranged slippage projection abuts the upper and lower surface with slippage chamber, described contact block is at right angles trapezoidal, described first inclined-plane is set to the hypotenuse of right-angled trapezium, is provided with spring between described symmetrically arranged slippage projection and the diapire in slippage chamber.
By technique scheme, can slippage in slippage chamber by the slippage projection in clamping block, realized the reset of clamping block by the spring be arranged between slippage chamber diapire and slippage projection, and can prevent from locking the effect skidding off through hole.
As preferably, described contact pin selects No. 45 Steel materials to make.
By technique scheme, contact pin inserts in material to go to need larger hardness, and a kind of metallic material that No. 45 steel are comparatively common, has higher intensity, wear-resisting again.
Compared with prior art, the advantage of self-locking tapping screw described in the utility model is: connect fastening effect good, stable height not easily shaken loosen.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model self-locking tapping screw embodiment;
Fig. 2 is the sectional view of the utility model self-locking tapping screw embodiment;
Fig. 3 is the A portion enlarged view of Fig. 2;
Fig. 4 is the schematic diagram after the clamping block locking of the utility model self-locking tapping screw embodiment.
Description of reference numerals: 1, screw rod; 11, holding cavity; 12, annular slotted; 13, opening; 14, slippage chamber; 15, restraining position ring block; 2, screw head; 21, the first " one " word groove; 3, locking framework; 31, rotary part; 311, the second " one " word groove; 32, screw rod; 33, trapezoid block; 331, the second inclined-plane; 4, clamping block; 41, contact block; 411, the first inclined-plane; 42, slippage projection; 43, contact pin; 5, spring; 6, joint.
Embodiment
With reference to accompanying drawing, the utility model self-locking tapping screw embodiment is described in further details.
First screw is preferably processed by normal means by theftproof self-locking type tapping screw processing mode described in the utility model, next screw is cut, slot in screw after lancing, add clamping block 4 and spring 5, merge eventually through ultrasonic welding or other welding manners, those skilled in the art also can produce this product by other means.
See Fig. 1, described self-locking tapping screw comprises screw rod 1 and screw head 2, and described screw head 2 is provided with the first " one " word groove 21, and described screw rod 1 internal thread is connected with locking framework 3, and described locking framework realizes screw locking in radial directions.
See Fig. 1 to Fig. 3, described locking framework comprises rotary part 31, screw rod 32 and trapezoid block 33, above-mentioned three in one is arranged, described rotary part 31 offers the second " one " word groove 311, described rotary part 31 is arranged with screw head 2 height, the rotation of rotary part 31 can not be affected when rotation the first " one " word groove 21, holding cavity 11 is offered in described screw rod 1, internal thread is provided with in holding cavity 11, described screw rod 32 is threadedly connected in holding cavity 11, be connected with holding cavity 11 and offer annular slotted 12, the diameter of annular slotted 12 is less than the diameter of holding cavity 11 thus defines restraining position ring block 15 in joint, described trapezoid block 33 is arranged in annular slotted 12, perpendicular with annular slotted 12 and be communicated with and be provided with through hole, through hole comprises slippage chamber 14 and opening 13, opening 13 is connected with the external world, slippage chamber 14 is connected with opening 13, the diameter in described slippage chamber 14 is greater than the diameter of opening 13, whole through hole is in " convex " font, in described slippage chamber 14, slippage is connected with clamping block 4, described clamping block 4 comprises contact block 41, slippage projection 42 and the above-mentioned three in one manufacture of contact pin 43, described slippage projection 42 is connected to the upper and lower surface in slippage chamber 14, spring 5 is provided with between slippage projection 41 and the diapire in slippage chamber 14, described contact pin 43 can move in through hole, described contact block 41 is at right angles trapezoidal, hypotenuse is set to the first inclined-plane 411, the second inclined-plane 331 that described trapezoid block 33 is arranged and the first inclined-plane 411 abut against.
See Fig. 3 and Fig. 4, when screw is fixed in joint 6, rotary part 31 is rotated by turning the second " one " word groove 311, screw rod 32 is mobile in holding cavity 11 completes locking radial when the end face of screw rod 32 abuts to the end face of restraining position ring block 15, the first inclined-plane 411 extruded on contact block 41, the second inclined-plane 331 now on trapezoid block 33 makes to stretch out outside whole clamping block 4 male screw thread, contact pin 43 inserts in joint 6 and goes, contact pin 43 selects No. 45 steel to make, and compares large wear-resisting again with the hardness of nonmetal or softer metal No. 45 steel.Make clamping block 4 contact pin 43 that resets under the effect of spring 5 extract from joint 6 and stretch in through hole when needing first to rotate backward when taking out screw rotary part 31, then screw out screw and complete dismounting.
The above is only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technological schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. a self-locking tapping screw, comprise screw head and screw rod, it is characterized in that: described screw rod offers holding cavity, described holding cavity is connected and is connected with annular slotted, described annular slotted diameter is less than the diameter of holding cavity, described holding cavity is provided with internal thread, described internal thread has been threaded locking framework, described locking framework comprises rotary part, screw rod and trapezoid block, described trapezoid block can move in annular slotted, described screw rod is provided with through hole, described through hole is perpendicular to annular slotted, in described through hole, slippage is connected with the clamping block arranged in opposite directions, described clamping block is provided with the first inclined-plane, described trapezoid block is provided with the second inclined-plane, described first inclined-plane and the second inclined-plane abut against, the radial direction locking described screw is expanded outwardly when locking framework rotates the clamping block that can promote symmetrical setting.
2. self-locking tapping screw according to claim 1, is characterized in that: annular slotted and holding cavity joint form restraining position ring block, complete the locking of described screw when screw rod abuts to restraining position ring block.
3. self-locking tapping screw according to claim 1, it is characterized in that: described through hole comprises slippage chamber and opening, the diameter in described slippage chamber is greater than the diameter of opening, described slippage chamber and opening in communication, described slippage chamber vertically and be communicated with annular slotted, described clamping block comprises contact pin, symmetrically arranged slippage projection and contact block, described symmetrically arranged slippage projection abuts the upper and lower surface with slippage chamber, described contact block is at right angles trapezoidal, described first inclined-plane is set to the hypotenuse of right-angled trapezium, spring is provided with between described symmetrically arranged slippage projection and the diapire in slippage chamber.
4. self-locking tapping screw according to claim 3, described contact pin selects No. 45 Steel materials to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420825267.XU CN204344619U (en) | 2014-12-23 | 2014-12-23 | Self-locking tapping screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420825267.XU CN204344619U (en) | 2014-12-23 | 2014-12-23 | Self-locking tapping screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204344619U true CN204344619U (en) | 2015-05-20 |
Family
ID=53227890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420825267.XU Expired - Fee Related CN204344619U (en) | 2014-12-23 | 2014-12-23 | Self-locking tapping screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204344619U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106670382A (en) * | 2017-03-02 | 2017-05-17 | 谢娟 | Mechanical part machining mould capable of being conveniently clamped |
| CN106812768A (en) * | 2017-03-06 | 2017-06-09 | 高彩红 | Fastener |
| CN107041120A (en) * | 2017-05-12 | 2017-08-11 | 广州中国科学院先进技术研究所 | A kind of slow-wave component shell cold extrusion device |
| CN108105245A (en) * | 2017-12-21 | 2018-06-01 | 合肥仨力机械制造有限公司 | A kind of anti-accident facilitates the retaining of adjustment to loosen follower link |
| CN108548031A (en) * | 2018-06-27 | 2018-09-18 | 广东广航科技有限公司 | A kind of cylinder quick coupling |
| CN109519463A (en) * | 2018-11-14 | 2019-03-26 | 周焱春 | A kind of self-locking screw |
| CN110552952A (en) * | 2019-08-10 | 2019-12-10 | 唐春 | High-strength anti-skid screw fastener |
| CN110939643A (en) * | 2019-12-11 | 2020-03-31 | 储田生 | Anti-drop type fixing bolt |
| CN111206881A (en) * | 2020-03-26 | 2020-05-29 | 宜昌神达石油机械有限公司 | PDC drill bit suitable for mining geological shale gas with sand shale in slope |
| CN111408664A (en) * | 2020-01-09 | 2020-07-14 | 嘉兴科进机械制造有限公司 | Finishing punch |
| CN115126761A (en) * | 2022-05-18 | 2022-09-30 | 浙江科腾精工机械股份有限公司 | Anti-theft type bolt and nut is with cooperation subassembly |
-
2014
- 2014-12-23 CN CN201420825267.XU patent/CN204344619U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106670382B (en) * | 2017-03-02 | 2019-03-05 | 宁波铜车马汽车部件有限公司 | It is a kind of to clamp convenient machine components processing mold |
| CN106670382A (en) * | 2017-03-02 | 2017-05-17 | 谢娟 | Mechanical part machining mould capable of being conveniently clamped |
| CN106812768A (en) * | 2017-03-06 | 2017-06-09 | 高彩红 | Fastener |
| CN107041120B (en) * | 2017-05-12 | 2022-08-16 | 广州中国科学院先进技术研究所 | Slow wave component tube shell cold extrusion device |
| CN107041120A (en) * | 2017-05-12 | 2017-08-11 | 广州中国科学院先进技术研究所 | A kind of slow-wave component shell cold extrusion device |
| CN108105245A (en) * | 2017-12-21 | 2018-06-01 | 合肥仨力机械制造有限公司 | A kind of anti-accident facilitates the retaining of adjustment to loosen follower link |
| CN108548031A (en) * | 2018-06-27 | 2018-09-18 | 广东广航科技有限公司 | A kind of cylinder quick coupling |
| CN109519463A (en) * | 2018-11-14 | 2019-03-26 | 周焱春 | A kind of self-locking screw |
| CN110552952B (en) * | 2019-08-10 | 2021-04-20 | 温州市鑫泰紧固件有限公司 | High-strength anti-skid screw fastener |
| CN110552952A (en) * | 2019-08-10 | 2019-12-10 | 唐春 | High-strength anti-skid screw fastener |
| CN110939643A (en) * | 2019-12-11 | 2020-03-31 | 储田生 | Anti-drop type fixing bolt |
| CN111408664A (en) * | 2020-01-09 | 2020-07-14 | 嘉兴科进机械制造有限公司 | Finishing punch |
| CN111206881A (en) * | 2020-03-26 | 2020-05-29 | 宜昌神达石油机械有限公司 | PDC drill bit suitable for mining geological shale gas with sand shale in slope |
| CN115126761A (en) * | 2022-05-18 | 2022-09-30 | 浙江科腾精工机械股份有限公司 | Anti-theft type bolt and nut is with cooperation subassembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20191223 |