CN203420994U - Anti-loosening bolt - Google Patents

Anti-loosening bolt Download PDF

Info

Publication number
CN203420994U
CN203420994U CN201320508768.0U CN201320508768U CN203420994U CN 203420994 U CN203420994 U CN 203420994U CN 201320508768 U CN201320508768 U CN 201320508768U CN 203420994 U CN203420994 U CN 203420994U
Authority
CN
China
Prior art keywords
bolt
flat gasket
bolt body
positioning hole
conical surface
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
Application number
CN201320508768.0U
Other languages
Chinese (zh)
Inventor
李岩
韩志刚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Heli Co Ltd
Original Assignee
Anhui Heli Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Anhui Heli Co Ltd filed Critical Anhui Heli Co Ltd
Priority to CN201320508768.0U priority Critical patent/CN203420994U/en
Application granted granted Critical
Publication of CN203420994U publication Critical patent/CN203420994U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model provides an anti-loosening bolt which comprises a bolt body formed by a threaded rod and a bolt head, the threaded rod is provided with outer threads, a flat gasket is arranged on the bolt body in a sleeved mode, a positioning hole allowing the bolt body to penetrate through in a sleeved mode is formed in the center of the flat gasket, the connecting portion between the threaded rod and the bolt head is a conical surface, and a horn-shaped cone opening is formed in one side of the positioning hole in the axial direction and meshed with the conical surface. When the bolt body is screwed, the conical surface of the connecting portion of the bolt is meshed with the cone opening of the flat gasket, and the positioning hole of the flat gasket can swell open outwards. Because of elasticity of the flat gasket, the bolt has a trend of automatically recovering the original shape, force parallel with the threaded rod and pointing at the bolt head is generated, therefore pretightening force is enlarged when the bolt body is screwed, friction of the threads is increased, and the anti-loosening effect is achieved.

Description

A kind of Anti-loose bolt
Technical field
The utility model relates to a kind of bolt, is specifically related to a kind of Anti-loose bolt.
Background technique
Being threaded is Connecting format main in machinery industry, is mainly to consist of bolt or bolt attaching nut.Bolt is by head with the cylindrical screw rod of an outside thread class fastening piece dimerous, for being fastenedly connected two parts, facilitates fastening and dismounting.
But because the outside thread of bolt is subject to frequently active force or vibration makes it easily produce tired or distortion, finally cause its pretightening force to reduce and make thread looseness, making bolt solid failure, from retaining element, splitting away off, cause product quality problem, seriously can cause economic loss.
At present, bolt also can coordinate flat gasket to use in use, but the main effect of flat gasket is to increase its sealability, and screw retention is taken off and do not have any interception.
Model utility content
The purpose of this utility model is to provide a kind of Anti-loose bolt, avoids or delays its thread looseness, guarantees that its linkage function is permanently effective.
The technical solution of the utility model is: a kind of Anti-loose bolt, comprise the bolt body forming by being provided with externally threaded screw rod and bolt head, and on described bolt body, be arranged with flat gasket, the center of described flat gasket is provided with the positioning hole that wears bolt body; Joint between described screw rod and bolt head is the conical surface, and one end of described positioning hole is provided with tubaeform cone mouth, described cone mouth and conical surface phase wedging.
Further, described flat gasket is flat metallic gasket.
Further, the height of described joint is not less than the degree of depth of described cone mouth.
During use, first flat gasket is enclosed within on bolt body, recycling bolt head is by to be connected of bolt body precession, bolt body utilizes the conical surface of its joint and the cone mouth phase wedging of flat gasket when screwing, make the outside spreading of positioning hole of flat gasket, elasticity due to plain cushion self, the trend that has the shape that automatically resiles, flat gasket can be oriented the resile restoring force of shape of itself axle center, restoring force can be divided into one and act on vertical of wedging face that flat gasket contacts with bolt body joint, this active force can be divided into two, one is to be parallel to the power that screw axis points to bolt head, another is the power of vertically pointing to screw axis, the pretightening force when power of pointing to bolt head can increase bolt body and screws, thereby increased the frictional force between bolt outside thread and to be connected, finally reach locking effect.
So bolt of the present utility model and the fit form of flat gasket are compared the pretightening force having increased when bolt screws with existing form, strengthen the anti-loose performance of bolt body.It increases the pretightening force of bolt by the elastic force of part flat gasket itself being converted to the form of pretightening force, finally reach the effect that increases frictional force between bolt outside thread and to be connected.
In addition, flat metallic gasket is more conducive to screwing and anti-loose performance of bolt.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is the utility model structural representation;
Fig. 2 is bolt body structural representation of the present utility model;
Fig. 3 is flat gasket structural representation of the present utility model.
Embodiment
As shown in Figure 1, a kind of Anti-loose bolt, comprises the bolt body 1 forming by being provided with externally threaded screw rod and bolt head, on described bolt body 1, is arranged with flat gasket 2, and the center of flat gasket 2 is provided with the positioning hole that wears bolt body; Joint between screw rod and bolt head is the conical surface, and one end of described positioning hole is provided with tubaeform cone mouth, and the height of its joint is not less than the degree of depth of described cone mouth, and described conical surface wedging forms wedging face 3 in cone mouth, and flat gasket 2 is flat metallic gasket.
During use, first flat gasket 2 is enclosed within on bolt body 1, bolt body 1 utilizes the conical surface of its joint to form wedging face 3 with the cone mouth phase wedging of flat gasket when screwing, the power of screwing makes the outside spreading of the positioning hole of flat gasket 2, elasticity due to plain cushion self, the trend that has the shape that automatically resiles, 2 of flat gaskets can be oriented the resile restoring force F3 of shape of itself axle center, restoring force F3 can be divided into one and act on 3 one vertical F of wedging face that flat gasket contacts with bolt body joint, this directed force F can be divided into two, one is to be parallel to the power F1 that screw axis points to bolt head, another is the power F2 that vertically points to screw axis, pretightening force when the power F1 that points to bolt head can increase bolt body 1 and screws, thereby increased the frictional force between screw thread, finally reach the effect of screw retention.
As shown in Figure 2, bolt body 1 comprises that the joint 1-3 between screw rod 1-2 and bolt head 1-1 is the conical surface by being provided with externally threaded screw rod 1-2 and bolt head 1-1.
As shown in Figure 3, the center of flat gasket 2 is provided with the positioning hole 2-1 that wears bolt body, and one end of positioning hole 2-1 is provided with tubaeform cone mouth 2-2.
Above embodiment is not limited only to protection domain of the present utility model, all based on basic thought of the present utility model, modify or change all belong to protection domain of the present utility model.

Claims (3)

1. an Anti-loose bolt, comprises the bolt body forming by being provided with externally threaded screw rod and bolt head, it is characterized in that: on described bolt body, be arranged with flat gasket, the center of described flat gasket is provided with the positioning hole that wears bolt body; Joint between described screw rod and bolt head is the conical surface, and one end of described positioning hole is provided with tubaeform cone mouth, described cone mouth and conical surface phase wedging.
2. Anti-loose bolt according to claim 1, is characterized in that: described flat gasket is flat metallic gasket.
3. Anti-loose bolt according to claim 1, is characterized in that: the height of described joint is not less than the degree of depth of described cone mouth.
CN201320508768.0U 2013-08-20 2013-08-20 Anti-loosening bolt Expired - Fee Related CN203420994U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320508768.0U CN203420994U (en) 2013-08-20 2013-08-20 Anti-loosening bolt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320508768.0U CN203420994U (en) 2013-08-20 2013-08-20 Anti-loosening bolt

Publications (1)

Publication Number Publication Date
CN203420994U true CN203420994U (en) 2014-02-05

Family

ID=50020093

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320508768.0U Expired - Fee Related CN203420994U (en) 2013-08-20 2013-08-20 Anti-loosening bolt

Country Status (1)

Country Link
CN (1) CN203420994U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104380911A (en) * 2014-11-30 2015-03-04 重庆锦冈机械有限公司 Agricultural machinery blade fixing frame

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104380911A (en) * 2014-11-30 2015-03-04 重庆锦冈机械有限公司 Agricultural machinery blade fixing frame

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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: 20140205

Termination date: 20200820