CN206802055U - Anti-loosening bolt - Google Patents
Anti-loosening bolt Download PDFInfo
- Publication number
- CN206802055U CN206802055U CN201720270402.2U CN201720270402U CN206802055U CN 206802055 U CN206802055 U CN 206802055U CN 201720270402 U CN201720270402 U CN 201720270402U CN 206802055 U CN206802055 U CN 206802055U
- Authority
- CN
- China
- Prior art keywords
- cavity
- nut
- stud
- expansion sleeve
- left end
- 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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- Bolts, Nuts, And Washers (AREA)
Abstract
A kind of anti-loosening bolt, the cavity of insertion stud body length direction is set at the axle center of stud body, cavity is by the first frustum type cavity, second cylindrical cavity and the 3rd cylindrical cavity composition, the axle center of expansion sleeve is provided with the cylindrical female chamber of insertion, the left hand external of expansion sleeve has the annular wedge being adapted with the first frustum type cavity, the right hand external of expansion sleeve is adapted to for cylinder and with the slip of the second cylindrical cavity, it is arranged in cavity screw slide, and the left end of screw rod is plugged in the internal thread chamber of expansion sleeve by screw thread cooperation, the right side for extending to nut of screw rod is simultaneously set with the first nut coordinated by screw thread and the second nut on the right side of the first nut, first nut is fixedly connected with the right-hand member of nut；The left end of stud offers the crack extended along its direction of axis line, and crack connects the outside of its internal cavity and stud, and crack extends to the middle part of the second cylindrical cavity from the left end of stud.The bolt can ensure that bolt will not produce loosening.
Description
Technical field
It the utility model is related to fastener, and in particular to a kind of anti-loosening bolt.
Background technology
To prevent bolt looseness, ordinary circumstance is in bolt and needs to increase spring washer between secure component, but
In the environment of some frequent vibrations application, this bolt can still produce loose phenomenon.Generation is mainly bolt the reason for loosening
With being left back lash between fastener.
The content of the invention
In view of the above-mentioned problems of the prior art, the utility model provides a kind of anti-loosening bolt, the bolt can ensure that
Bolt will not produce loosening in the application environment of frequent vibration, so as to ensure with needing the reliable and stable company between fastener
Connect.
To achieve these goals, the utility model provides a kind of anti-loosening bolt, including by with externally threaded stud,
The stud body of nut composition, with externally threaded screw rod and expansion sleeve, insertion spiral shell is set at the axle center of the stud body
The cavity of post body length direction, the cavity is by the first frustum type cavity, the second cylindrical cavity and the 3rd cylindrical cavity
Composition, the first frustum type cavity, the second cylindrical cavity and the 3rd cylindrical cavity are connected and set successively close to nut,
The big opening end of first frustum type cavity away from nut, the internal diameter at the osculum end of the first frustum type cavity and the second cylindrical cavity
Internal diameter is identical, and the internal diameter of the second cylindrical cavity is more than the internal diameter of the 3rd cylindrical cavity；The axle center of the expansion sleeve is provided with
The cylindrical female chamber of insertion, the left hand external of expansion sleeve have the annular wedge being adapted with the first frustum type cavity, risen
The right hand external of tight set is adapted to for cylinder and with the slip of the second cylindrical cavity, is arranged at the cavity screw slide
In, and the left end of screw rod is plugged in the internal thread chamber of expansion sleeve by screw thread cooperation, the right side for extending to nut of screw rod is simultaneously
It is set with the right-hand member of the first nut coordinated by screw thread and the second nut on the right side of the first nut, the first nut and nut
It is fixedly connected；The left end of stud offers the crack extended along its direction of axis line, the crack connect its internal cavity with
The outside of stud, crack extend to the middle part of the second cylindrical cavity from the left end of stud；Set on the inside of the left end of the expansion sleeve
The guiding cavity of frustum type is put, it is spacing that the frustum type being adapted with the guiding cavity is provided with outside the left end of the screw rod
Block.
In the technical scheme, screw rod and expansion sleeve are respectively arranged with the cavity by making stud, and make the right side of screw rod
End extends to the right side of nut, and the part on the right side of nut is provided with the first nut and the second nut being sleeved on screw rod,
Because the first nut on the right side of nut with being fixedly connected, so, it can to the right be pulled by the rotation of the second nut or pushed away to the left
It is dynamic, so, after stud is screwed to first in the screw for need fastener, screw rod is pulled to the right by the rotation of the second nut,
The frustum type limited block of screw rod left end drives expansion sleeve to move right, and then the stud with rift portion is outwards strutted, from
And push against the inwall at the screwed hole of its installation.The bolt can ensure that bolt will not produce pine in the application environment of frequent vibration
It is dynamic, so as to ensure with needing the reliable and stable connection between fastener.
Further, in order to increase be fixedly connected intensity of second nut with nut, in the one end of the nut away from stud
Portion offers the cylinder shape groove being recessed to the left, and first nut is located in the cylinder shape groove, and the first nut and circle
Fixing assembling has circular connector between the madial wall of cylindrical groove.
Further, for the ease of the dismounting of bolt, the screw rod assembles back-moving spring in the second cylindrical cavity, resets
The left end of spring is against the left end of expansion sleeve, and its right-hand member is against on the right side wall of the second cylindrical cavity.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure：1st, stud, 2, nut, 3, stud body, 4, screw rod, 5, expansion sleeve, 6, cavity, the 7, first frustum type is empty
Chamber, the 8, second cylindrical cavity, the 9, the 3rd cylindrical cavity, 10, circular slanting contract, 11, crack, 12, cylinder shape groove, 13,
One nut, 14, circular connector, 15, be oriented to cavity, 16, frustum type limited block, 17, back-moving spring, the 18, second nut.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of anti-loosening bolt, including the stud body by being formed with externally threaded stud 1, nut 2
The length direction of insertion stud body 3 is set the 3rd, with externally threaded screw rod 4 and expansion sleeve 5, at the axle center of the stud body 3
Cavity 6, the cavity 6 is made up of the first frustum type cavity 7, the second cylindrical cavity 8 and the 3rd cylindrical cavity 9, first
Frustum type cavity 7, the second cylindrical cavity 8 are connected with the 3rd cylindrical cavity 9 and set successively close to the ground of nut 2, first
The big opening end of frustum type cavity 7 away from nut 2, the internal diameter at the osculum end of the first frustum type cavity 7 and the second cylindrical cavity 8
Internal diameter is identical, and the internal diameter of the second cylindrical cavity 8 is more than the internal diameter of the 3rd cylindrical cavity 9；The axle center of the expansion sleeve 5 is set
The cylindrical female chamber of insertion is equipped with, the left hand external of expansion sleeve 5 has the circular slanting being adapted with the first frustum type cavity 7
Wedge 10, the right hand external of expansion sleeve 5 are adapted to for cylinder and with the slip of the second cylindrical cavity 8, and the screw rod 4 is slidably set
In the cavity 6, and the left end of screw rod 4 is plugged in the internal thread chamber of expansion sleeve 5 by screw thread cooperation, the extension of screw rod 4
To the right side of nut 2 and it is set with the first nut 13 coordinated by screw thread and the second nut positioned at the right side of the first nut 13
18, the first nut 13 is fixedly connected with the right-hand member of nut 2；The left end of stud 1 offers the crack extended along its direction of axis line
11, the crack 11 connects the outside of its internal cavity 6 and stud 1, and crack 11 extends to the second cylinder from the left end of stud 1
The middle part of shape cavity 8；The guiding cavity 15 of frustum type is set on the inside of the left end of the expansion sleeve 5, outside the left end of the screw rod 4
It is provided with the frustum type limited block 16 being adapted with the guiding cavity 15.Spiral shell is respectively arranged with cavity 6 by making stud 1
Bar 4 and expansion sleeve 5, and the right-hand member of screw rod 4 is extended to the right side of nut 2, and be provided with and be sleeved in the part on the right side of nut 2
The first nut 13 and the second nut 18 on screw rod 4, because the right side of the first nut 13 and nut 2 is fixedly connected, so, by the
The rotation of two nuts 18 can to the right be pulled or promoted to the left, and so, stud 1 is screwed in the screw for needing fastener first
Afterwards, screw rod 4 is pulled to the right by the rotation of the second nut 19, the frustum type limited block 16 of the left end of screw rod 4 drives expansion sleeve 5
Move right, and then the stud 1 with the part of crack 11 can be strutted outwards, it is interior at the screwed hole of its installation so as to push against
Wall.The bolt can ensure that bolt will not produce loosening in the application environment of frequent vibration, so as to ensure with needing fastener
Between reliable and stable connection.
In order to increase be fixedly connected intensity of second nut 18 with nut 2, one end middle part of the nut 2 away from stud 1
The cylinder shape groove 12 being recessed to the left is offered, first nut 13 is located in the cylinder shape groove 12, and the first nut
Fixing assembling has circular connector 14 between 13 and the madial wall of cylinder shape groove 12.
For the ease of the dismounting of bolt, the screw rod 4 assembles back-moving spring 17 in the second cylindrical cavity 8, resets bullet
The left end of spring 17 is against the left end of expansion sleeve 5, and its right-hand member is against on the right side wall of the second cylindrical cavity 8.
Claims (3)
1. a kind of anti-loosening bolt, including the stud body (3) by being formed with externally threaded stud (1) and nut (2), it is special
Sign is, in addition to carries externally threaded screw rod (4) and expansion sleeve (5), and insertion is set at the axle center of the stud body (3)
The cavity (6) of stud body (3) length direction, the cavity (6) is by the first frustum type cavity (7), the second cylindrical cavity (8)
Formed with the 3rd cylindrical cavity (9), the first frustum type cavity (7), the second cylindrical cavity (8) and the 3rd cylindrical cavity
(9) it is connected and is set successively close to nut (2), the big opening end of the first frustum type cavity (7) is away from nut (2), the first cone
The internal diameter at the osculum end of bench-type cavity (7) is identical with the internal diameter of the second cylindrical cavity (8), the second cylindrical cavity (8) it is interior
Footpath is more than the internal diameter of the 3rd cylindrical cavity (9)；The axle center of the expansion sleeve (5) is provided with the cylindrical female chamber of insertion,
The left hand external of expansion sleeve (5) has the annular wedge (10) being adapted with the first frustum type cavity (7), the right side of expansion sleeve (5)
It is adapted to for cylinder outside side and with the second cylindrical cavity (8) slip, the screw rod (4) is slidingly arranged at the cavity
(6) in, and the left end of screw rod (4) is plugged in the internal thread chamber of expansion sleeve (5) by screw thread cooperation, and screw rod (4) extend to
The right side of nut (2) is simultaneously set with the first nut (13) coordinated by screw thread and the second spiral shell on the right side of the first nut (13)
Female (18), the first nut (13) are fixedly connected with the right-hand member of nut (2)；The left end of stud (1) is offered along its direction of axis line
The crack (11) of extension, the crack (11) connect the outside of its internal cavity (6) and stud (1), and crack (11) are from stud
(1) left end extends to the middle part of the second cylindrical cavity (8)；Leading for frustum type is set on the inside of the left end of the expansion sleeve (5)
To cavity (15), the frustum type limited block being adapted with the guiding cavity (15) is provided with outside the left end of the screw rod (4)
(16)。
A kind of 2. anti-loosening bolt according to claim 1, it is characterised in that the one of the remote stud (1) of the nut (2)
End middle part offers the cylinder shape groove (12) being recessed to the left, and first nut (13) is located at the cylinder shape groove (12)
In, and fixing assembling has circular connector (14) between the madial wall of the first nut (13) and cylinder shape groove (12).
3. a kind of anti-loosening bolt according to claim 1 or 2, it is characterised in that the screw rod (4) is in the second cylinder
Assembling back-moving spring (17) in cavity (8), the left end of back-moving spring (17) are against the left end of expansion sleeve (5), and its right-hand member is against the
On the right side wall of two cylindrical cavities (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720270402.2U CN206802055U (en) | 2017-03-20 | 2017-03-20 | Anti-loosening bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720270402.2U CN206802055U (en) | 2017-03-20 | 2017-03-20 | Anti-loosening bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206802055U true CN206802055U (en) | 2017-12-26 |
Family
ID=60729770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720270402.2U Expired - Fee Related CN206802055U (en) | 2017-03-20 | 2017-03-20 | Anti-loosening bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206802055U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707722A (en) * | 2019-02-28 | 2019-05-03 | 海盐嘉海五金有限公司 | A kind of automotive hub connection bolt |
| CN110329202A (en) * | 2019-07-09 | 2019-10-15 | 上海东方久乐汽车安全气囊有限公司 | A kind of steering wheel air bag mounting structure, steering wheel and automobile |
| CN110566561A (en) * | 2019-09-16 | 2019-12-13 | 柳州博纳汽车科技有限公司 | Locking fastening bolt for car that moves |
| CN113152743A (en) * | 2021-02-24 | 2021-07-23 | 江苏固德威尔金属制品有限公司 | Elastic pin for curtain wall system |
| CN113894581A (en) * | 2021-11-09 | 2022-01-07 | 贵州欣宇泰科精密科技有限公司 | Anti-seismic core expansion tool with locking function |
-
2017
- 2017-03-20 CN CN201720270402.2U patent/CN206802055U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707722A (en) * | 2019-02-28 | 2019-05-03 | 海盐嘉海五金有限公司 | A kind of automotive hub connection bolt |
| CN109707722B (en) * | 2019-02-28 | 2023-12-26 | 海盐嘉海五金有限公司 | Automobile hub connecting bolt |
| CN110329202A (en) * | 2019-07-09 | 2019-10-15 | 上海东方久乐汽车安全气囊有限公司 | A kind of steering wheel air bag mounting structure, steering wheel and automobile |
| CN110566561A (en) * | 2019-09-16 | 2019-12-13 | 柳州博纳汽车科技有限公司 | Locking fastening bolt for car that moves |
| CN113152743A (en) * | 2021-02-24 | 2021-07-23 | 江苏固德威尔金属制品有限公司 | Elastic pin for curtain wall system |
| CN113894581A (en) * | 2021-11-09 | 2022-01-07 | 贵州欣宇泰科精密科技有限公司 | Anti-seismic core expansion tool with locking function |
| CN113894581B (en) * | 2021-11-09 | 2023-10-20 | 贵州欣宇泰科精密科技有限公司 | Antidetonation core frock that rises with locking function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20171226 Termination date: 20180320 |