CN205744834U - A kind of screw fastening structure preventing from loosening - Google Patents
A kind of screw fastening structure preventing from loosening Download PDFInfo
- Publication number
- CN205744834U CN205744834U CN201520793525.5U CN201520793525U CN205744834U CN 205744834 U CN205744834 U CN 205744834U CN 201520793525 U CN201520793525 U CN 201520793525U CN 205744834 U CN205744834 U CN 205744834U
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- screw
- check washer
- spacing
- loosening
- slotted hole
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Abstract
This utility model belongs to technical field of fastening, relates to a kind of screw fastening structure preventing and loosening.It is characterized in that: on check washer (3), have two spacing auricles (3c), the sidewall of the width of this slotted hole has two symmetrical stopper slots, after screw (2) fastening puts in place, two spacing auricles (3c) lay respectively in two stopper slots.The utility model proposes the screw fastening structure preventing from loosening of a kind of improvement, screw loosening can be effectively prevented, improve the reliability preventing screw loosening.
Description
Technical field
This utility model belongs to technical field of fastening, relates to a kind of screw fastening structure preventing and loosening.
Background technology
Traditional structure preventing screw loosening mainly has spring shim and locked spacer two kinds, spring shim
The frictional force produced by its elastic force and head of screw plane contact prevents screw from rotating.Shortcoming is: work as vibratory output
When being worth big, it is impossible to effectively prevent screw loosening, poor reliability；Locked spacer with bent anti-rotation sheet,
After being screw fastening to position, bend anti-rotation sheet and head of screw side fit, can avoid screw and locked spacer it
Between relative motion, but screw cannot be avoided to rotate together with pad, reliability is low.Can at needs height
By preventing the occasion of screw loosening, above two prevents the structure of screw loosening from all can not meet requirement.
Summary of the invention
The purpose of this utility model is: propose the screw fastening structure preventing from loosening of a kind of improvement, in order to
It is effectively prevented screw loosening, improves the reliability preventing screw loosening.
The technical solution of the utility model is: a kind of screw fastening structure preventing from loosening, by screw 2
With check washer 3, component 1 is fixed on matrix, component 1 has sunk screw via, at matrix
On have a screwed hole, screw 2 is screwed in the screwed hole on matrix after the centre bore of check washer 3, spiral shell
The head of screw of nail 2 is positioned at sunk screw via, and check washer 3 includes basic ring 3a and anti-rotation sheet 3b, when
After screw 2 fastening puts in place, by the side laminating at anti-rotation sheet 3b 90-degree bent angle with the head of screw of screw 2；
It is characterized in that: having two spacing auricle 3c on check washer 3, two spacing auricle 3c are relative to anti-rotation
Sheet 3b vertically divides face symmetry equally, and spacing auricle 3c is shaped as semicircle, rectangle, triangle or ladder
Shape；The counter sink of the sunk screw via on component 1 is slotted hole, and the maximum radius of this slotted hole is more than
Check washer 3, along the maximum radius of anti-rotation sheet 3b length direction, defines the maximum radius direction of this slotted hole
For length direction, the sidewall of the width of this slotted hole has two symmetrical stopper slots, stopper slot
Position corresponding with the position of on check washer 3 two spacing auricle 3c, the shape and size of stopper slot with
The shape and size of check washer 3 upper limit auricle 3c adapt, after screw 2 fastening puts in place, and two
Spacing auricle 3c lays respectively in two stopper slots.
The utility model has the advantages that: propose the screw fastening structure preventing from loosening of a kind of improvement, energy
It is effectively prevented screw loosening, improves the reliability preventing screw loosening.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the axonometric drawing of check washer 3 in this utility model, the figure illustrates the anti-of check washer 3
State before rotor 3b bending.
Fig. 3 is the axonometric drawing of check washer 3 in this utility model, the figure illustrates the anti-of check washer 3
State after rotor 3b bending.
Detailed description of the invention
Below this utility model is described in further details.See Fig. 1 to Fig. 3, a kind of prevent from loosening
Screw fastening structure, is fixed on component 1 on matrix by screw 2 and check washer 3, at component 1
On have sunk screw via, matrix has screwed hole, screw 2 is through after the centre bore of check washer 3
Being screwed in the screwed hole on matrix, the head of screw of screw 2 is positioned at sunk screw via, check washer 3
Including basic ring 3a and anti-rotation sheet 3b, after screw 2 fastening puts in place, by anti-rotation sheet 3b 90-degree bent angle with
The side laminating of the head of screw of screw 2；It is characterized in that: on check washer 3, have two spacing auricles
3c, two spacing auricle 3c relative to anti-rotation sheet 3b vertically to divide face equally symmetrical, the shape of spacing auricle 3c
For semicircle, rectangle, triangle or trapezoidal；The counter sink of the sunk screw via on component 1 is oval
Hole, the maximum radius of this slotted hole is more than the check washer 3 maximum radius along anti-rotation sheet 3b length direction,
The maximum radius direction defining this slotted hole is length direction, on the sidewall of the width of this slotted hole
There are two symmetrical stopper slots, the position of stopper slot and the position of two spacing auricle 3c on check washer 3
Correspondence, the shape and size of stopper slot adapt with the shape and size of check washer 3 upper limit auricle 3c,
After screw 2 fastening puts in place, two spacing auricle 3c lay respectively in two stopper slots.
The present invention, on the basis of anti-rotation sheet 3b prevents screw 2 and check washer 3 relatively rotates, adds
Spacing auricle 3c, effectively prevent check washer 3 rotating relative to sunk screw via, passes through anti-rotation
Sheet 3b limits screw 2 rotating relative to sunk screw via, substantially increases the reliability preventing from loosening.
Claims (1)
1. prevent the screw fastening structure loosened, by screw (2) and check washer (3) by component (1)
It is fixed on matrix, component (1) has sunk screw via, matrix has screwed hole, screw (2)
Being screwed in the screwed hole on matrix after the centre bore of check washer (3), the head of screw of screw (2) is positioned at
In sunk screw via, check washer (3) includes basic ring (3a) and anti-rotation sheet (3b), when screw (2) fastens
After putting in place, by the side laminating at anti-rotation sheet (3b) 90-degree bent angle with the head of screw of screw (2)；Its feature exists
In: on check washer (3), there are two spacing auricles (3c), two spacing auricle (3c) anti-rotation sheets (3b) relatively
Vertically to divide face equally symmetrical, spacing auricle (3c) be shaped as semicircle, rectangle, triangle or trapezoidal；
The counter sink of the sunk screw via on component (1) is slotted hole, and the maximum radius of this slotted hole is more than locking
Pad (3) along the maximum radius of anti-rotation sheet (3b) length direction, the maximum radius direction defining this slotted hole is
Length direction, has two symmetrical stopper slots on the sidewall of the width of this slotted hole, stopper slot
The position of position two spacing auricles (3c) upper with check washer (3) is corresponding, the shape and size of stopper slot with
The shape and size of check washer (3) upper limit auricle (3c) adapt, after screw (2) fastening puts in place,
Two spacing auricles (3c) lay respectively in two stopper slots.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520793525.5U CN205744834U (en) | 2015-10-14 | 2015-10-14 | A kind of screw fastening structure preventing from loosening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520793525.5U CN205744834U (en) | 2015-10-14 | 2015-10-14 | A kind of screw fastening structure preventing from loosening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205744834U true CN205744834U (en) | 2016-11-30 |
Family
ID=57388739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520793525.5U Active CN205744834U (en) | 2015-10-14 | 2015-10-14 | A kind of screw fastening structure preventing from loosening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205744834U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107795566A (en) * | 2017-12-05 | 2018-03-13 | 上海振华重工(集团)股份有限公司 | A kind of anti-rotation device for bolt interlocking |
| CN110730871A (en) * | 2017-06-14 | 2020-01-24 | 株式会社日立制作所 | Bracket supporting device |
| WO2020220961A1 (en) * | 2019-04-29 | 2020-11-05 | 青岛海尔洗衣机有限公司 | Adjustable foot and washing machine |
| CN116557402A (en) * | 2023-07-04 | 2023-08-08 | 四川蓝海智能装备制造有限公司 | Bolt anti-loosening structure, mounting and dismounting method and motor speed reducer structure |
-
2015
- 2015-10-14 CN CN201520793525.5U patent/CN205744834U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110730871A (en) * | 2017-06-14 | 2020-01-24 | 株式会社日立制作所 | Bracket supporting device |
| CN107795566A (en) * | 2017-12-05 | 2018-03-13 | 上海振华重工(集团)股份有限公司 | A kind of anti-rotation device for bolt interlocking |
| WO2020220961A1 (en) * | 2019-04-29 | 2020-11-05 | 青岛海尔洗衣机有限公司 | Adjustable foot and washing machine |
| CN116557402A (en) * | 2023-07-04 | 2023-08-08 | 四川蓝海智能装备制造有限公司 | Bolt anti-loosening structure, mounting and dismounting method and motor speed reducer structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |