CN209875675U - Connecting bolt - Google Patents

Connecting bolt Download PDF

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Publication number
CN209875675U
CN209875675U CN201920597023.3U CN201920597023U CN209875675U CN 209875675 U CN209875675 U CN 209875675U CN 201920597023 U CN201920597023 U CN 201920597023U CN 209875675 U CN209875675 U CN 209875675U
Authority
CN
China
Prior art keywords
screw rod
rod portion
axial
excircle
screw
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
CN201920597023.3U
Other languages
Chinese (zh)
Inventor
陈志淼
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.)
Ruian Shunxiang Standard Parts Co Ltd
Original Assignee
Ruian Shunxiang Standard Parts 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 Ruian Shunxiang Standard Parts Co Ltd filed Critical Ruian Shunxiang Standard Parts Co Ltd
Priority to CN201920597023.3U priority Critical patent/CN209875675U/en
Application granted granted Critical
Publication of CN209875675U publication Critical patent/CN209875675U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses a connecting bolt, including screw rod portion, its characterized in that: the center of screw rod portion is equipped with the axial hole, and the excircle of screw rod portion is equipped with axial notch groove, and axial notch groove radially link up the axial hole inwards from the excircle surface of screw rod portion, and axial notch groove makes the excircle of screw rod portion have elastic deformation ability, fill in the elasticity core in the axial hole, under the effect of strutting of elasticity core, the external diameter of screw thread of screw rod portion is greater than nominal external diameter of thread. The utility model discloses can prevent better that the hookup is not hard up, simple structure.

Description

Connecting bolt
Technical Field
The utility model relates to a fastener product, concretely relates to connecting bolt.
Background
At present, in order to prevent the loose connection, a structural mode that a bolt and a self-locking nut form thread pair connection is generally adopted, but in some connection occasions, nut products are not needed, so that the problem that the connection is easy to loose is solved by adopting some anti-loose measures, and the structure is complex and inconvenient.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, and aims to provide a connecting bolt which can better prevent the loosening of the connection and has a simple structure.
The utility model discloses a through following technical scheme implementation:
a coupling bolt, includes screw portion, its characterized in that: the center of screw rod portion is equipped with the axial hole, and the excircle of screw rod portion is equipped with axial notch groove, and axial notch groove radially link up the axial hole inwards from the excircle surface of screw rod portion, and axial notch groove makes the excircle of screw rod portion have elastic deformation ability, fill in the elasticity core in the axial hole, under the effect of strutting of elasticity core, the external diameter of screw thread of screw rod portion is greater than nominal external diameter of thread.
According to the coupling bolt in the technical scheme, after the threads of the bolt are screwed with the threaded holes of the coupling piece, due to the elastic capacity of the elastic core body, the threads of the bolt can be in close contact with the threaded holes of the coupling piece, and a gapless matching state is basically kept, so that greater friction can be generated between the threads of the bolt and the threaded holes of the coupling piece, and the effect of better preventing coupling looseness is achieved, and the structure is simple.
Preferably, the elastic core is made of rubber material.
Preferably, three axial notch grooves are arranged along the outer circumference of the screw rod part.
Drawings
The utility model discloses there is following figure:
figure 1 is a schematic structural diagram of the present invention,
fig. 2 is a bottom view of fig. 1.
Detailed Description
As shown in fig. 1 and 2, the connecting bolt of the present invention comprises a screw portion 3 and a hexagonal head portion 1, wherein the screw portion 3 and the hexagonal head portion 1 are provided with an axial hole 4 at the center thereof, the outer circle of the screw portion 3 is provided with an axial notch groove 2, three axial notch grooves 2 are arranged along the outer circle circumference of the screw portion 3, the axial notch grooves 2 radially penetrate the axial hole 4 from the outer circle surface of the screw portion 3, the axial notch grooves 2 enable the outer circle of the screw portion 3 to have elastic deformation capability, an elastic core 5 is inserted into the axial hole 4, the elastic core 5 is made of rubber material, under the expanding action of the elastic core 5, the outer diameter of the screw portion 3 is larger than the nominal outer diameter of the screw (the outer diameter of the screw in normal condition is generally slightly smaller than the nominal outer diameter, in this way, after the screw of the bolt is screwed with the screw hole of the coupling member, due to the elastic capability of the elastic core, the screw thread of the bolt can be in close contact with the threaded hole of the connecting piece, the gapless fit state is basically kept, and then the screw thread of the bolt and the threaded hole of the connecting piece have larger friction, so that the function of better preventing the connection from loosening is achieved, and the structure is simple.

Claims (3)

1. A coupling bolt, includes screw portion, its characterized in that: the center of screw rod portion is equipped with the axial hole, and the excircle of screw rod portion is equipped with axial notch groove, and axial notch groove radially link up the axial hole inwards from the excircle surface of screw rod portion, and axial notch groove makes the excircle of screw rod portion have elastic deformation ability, fill in the elasticity core in the axial hole, under the effect of strutting of elasticity core, the external diameter of screw thread of screw rod portion is greater than nominal external diameter of thread.
2. A coupling bolt as defined in claim 1, wherein: the elastic core body is made of rubber materials.
3. A coupling bolt as defined in claim 1, wherein: three axial notch grooves are distributed along the circumference of the outer circle of the screw rod part.
CN201920597023.3U 2019-04-28 2019-04-28 Connecting bolt Expired - Fee Related CN209875675U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920597023.3U CN209875675U (en) 2019-04-28 2019-04-28 Connecting bolt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920597023.3U CN209875675U (en) 2019-04-28 2019-04-28 Connecting bolt

Publications (1)

Publication Number Publication Date
CN209875675U true CN209875675U (en) 2019-12-31

Family

ID=68962676

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920597023.3U Expired - Fee Related CN209875675U (en) 2019-04-28 2019-04-28 Connecting bolt

Country Status (1)

Country Link
CN (1) CN209875675U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021025643A (en) * 2019-07-31 2021-02-22 デザインパーツ株式会社 bolt

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021025643A (en) * 2019-07-31 2021-02-22 デザインパーツ株式会社 bolt

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Legal Events

Date Code Title Description
GR01 Patent grant
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: 20191231

Termination date: 20200428