CN209705036U - A kind of folding head bolt - Google Patents
A kind of folding head bolt Download PDFInfo
- Publication number
- CN209705036U CN209705036U CN201822034700.9U CN201822034700U CN209705036U CN 209705036 U CN209705036 U CN 209705036U CN 201822034700 U CN201822034700 U CN 201822034700U CN 209705036 U CN209705036 U CN 209705036U
- Authority
- CN
- China
- Prior art keywords
- head
- bolt
- screw rod
- mounting hole
- folding
- 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.)
- Active
Links
Landscapes
- Dowels (AREA)
Abstract
The utility model provides a kind of folding head bolt, including bolt head, the screw rod being connect with bolt head and positioned at the twisting head of folding head bolt tail portion, the disconnected diameter slot for the twisting head that fractures is provided between screw rod end and twisting head, screw rod includes the polished rod portion close to bolt head side and the threaded portion close to groove side, the polished rod portion is provided with the auxiliary section for cooperating with mounting hole side wall transition, and the auxiliary section has the radial dimension that can cooperate with mounting hole side wall transition.By the transition fit of auxiliary section and mounting hole, realizes the unilateral installation of folding head bolt, solve the unilateral installation question of folding head bolt.
Description
Technical field
The utility model is specifically related to a kind of folding head bolt.
Background technique
It is calibrated wrench method that bolt, which installs most general method, at present, and by designing the size of disconnected diameter slot, effectively control installation is turned round
Square, it is pre- next when torque reaches bolt with special sleeve spanner limitation nut rotation and twisting bolt tail in assembling process
It after disconnected diameter slot failure torque, is broken at the diameter slot that breaks, screw thread pair assembly finishes.
Authorization Notice No. is a kind of steel construction torque-shear type height disclosed in the Chinese utility model patent of CN201255166Y
Strength bolts, including bolt head, the screw rod being connect with bolt head and positioned at the twisting head of bolt tail, between twisting head and screw rod
Equipped with the groove for the twisting head that fractures, i.e., disconnected diameter slot, although being effectively controlled installation torque, during installation there is still a need for
Anchor stud head one end can not solve the unilateral installation question of folding head bolt.
Utility model content
The utility model aim is to provide a kind of folding head bolt, to solve the unilateral installation question of folding head bolt.
To achieve the goals above, the utility model provides a kind of folding head bolt, connect including bolt head, with bolt head
Screw rod and twisting head positioned at folding head bolt tail portion are provided with for the disconnected of the twisting head that fractures between screw rod end and twisting head
Diameter slot, screw rod include close to the polished rod portion of bolt head side and close to the threaded portion of disconnected diameter slot side, and the polished rod portion is provided with
Auxiliary section for cooperating with mounting hole side wall transition, the auxiliary section have the radial direction that can cooperate with mounting hole side wall transition
Size.
It has the beneficial effect that the auxiliary section for cooperating with mounting hole side wall transition is arranged in polished rod portion in the utility model, matches
Conjunction portion has can be with the radial dimension of work mounting hole side wall transition cooperation.In this way when installing folding head bolt, first by discount
Bolt is inserted into mounting hole, and auxiliary section and mounting hole side wall realize transition fit, and folding head bolt is mounted in mounting hole surely is not in
Dropping situations.In pretension bolt, fixture nut, turn-knob twisting head does not need to limit bolt head side again, folding head bolt with
With rotation, until twisting head rupture falls off after reaching disconnected diameter slot failure torque, installation is completed, the unilateral side of folding head bolt is realized
Installation, solving folding head bolt can not unilateral installation question.
Further, the matching part is limited in close to bolt head side.
Auxiliary section is had the beneficial effect that close to bolt head side, so during installing folding head bolt, behind auxiliary section with peace
Hole cooperation is filled, resistance of folding head bolt during being inserted into mounting hole is reduced, facilitates installation.
Further, it is limited on screw rod side wall excircle, the auxiliary section is provided with axially extending simultaneously along the screw rod
Spaced straight-tooth.
It has the beneficial effect that the spaced straight-tooth by extending axially along a screw on screw rod side wall excircle, is matching
When conjunction portion and inner wall of the hole installing transition fit, straight-tooth is more preferable compared to other forms anticreep effect, and more convenient folding head bolt is determined
In mounting hole.
Further, the straight-tooth is limited as zigzag.
It has the beneficial effect that using the straight-tooth with mounting hole transition fit using zigzag, increases auxiliary section and mounting hole
Pressure between inner wall strengthens anticreep effect.
Detailed description of the invention
Fig. 1 is the assembling schematic diagram of the embodiment of the folding head bolt of the utility model；
Fig. 2 is the structural schematic diagram of the embodiment of the folding head bolt of the utility model；
Fig. 3 be Fig. 2 in A-A to cross-sectional view；
In figure, 1- bolt head；2- nut；3- twisting head；The auxiliary section 4-；5- breaks diameter slot；6- screw rod.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
The embodiment of the folding head bolt of the utility model, as shown in Fig. 2, folding head bolt includes bolt head 1, with bolt head 1
The screw rod 6 of connection and twisting head 3 positioned at folding head bolt tail portion, are provided between 6 end of screw rod and twisting head 3 for fractureing
The disconnected diameter slot 5 of twisting head 3, screw rod 6 include the polished rod portion close to 1 side of bolt head and the threaded portion close to groove side, polished rod
Portion is provided with the auxiliary section 4 for cooperating with mounting hole side wall transition, and auxiliary section 4 has and can cooperate with mounting hole side wall transition
Radial dimension.
Specifically, folding head bolt includes the bolt head 1 of mushroom capitiform, 6 tail portion of screw rod is provided with twisting head 3, and twisting head 3 is
The cross section of turret head, turret head is regular hexagon, and disconnected diameter slot 5 is provided between twisting head 3 and screw rod 6,5 basis of diameter slot of breaking
Torque demand is installed and designs satisfactory disconnected 5 size of diameter slot, is also set on 1 side of bolt head, 6 side wall excircle of screw rod
There is the auxiliary section 4 for cooperating with mounting hole side wall transition, auxiliary section 4 is the spaced sawtooth axially extending along screw rod 6
Shape straight-tooth, as shown in figure 3, auxiliary section 4 and mounting hole transition fit by being set as straight-tooth.
During installation, as shown in Figure 1, bolt is inserted into mounting hole, and straight-tooth region and mounting hole side wall transition cooperate,
To nut 2 pre-tighten install, with spanner fixture nut 2 simultaneously with another spanner towards 2 direction of tightening nut rotation, bolt not yet
When reaching installation torque, because of bolt and mounting hole transition fit, bolt is continued to rotate, while nut 2, bolt and work pieces mate
It is closer, when torque reach bolt break 5 failure torque of diameter slot after have reached installation torque, break diameter slot 5 fracture, twisting head 3
It is broken off, assembly finishes, and realizes unilateral installation while being effectively controlled installation torque.
In the present embodiment, to cooperate bolt and mounting hole side wall transition, auxiliary section use extends axially along a screw
Spaced straight-tooth can set auxiliary section to textured or be set as having and mounting hole side in other embodiments
The radial dimension of wall transition fit, it is achieved that bolt is unrelated with the shape of tooth with the transition fit of mounting hole.
Claims (4)
1. a kind of folding head bolt, including bolt head, the screw rod being connect with bolt head and positioned at the twisting head of folding head bolt tail portion, In
The disconnected diameter slot for the twisting head that fractures is provided between screw rod end and twisting head, screw rod includes the polished rod close to bolt head side
The threaded portion in portion and close disconnected diameter slot side, it is characterised in that: the polished rod portion is provided with for matching with mounting hole side wall transition
The auxiliary section of conjunction, the auxiliary section have the radial dimension that can cooperate with mounting hole side wall transition.
2. folding head bolt according to claim 1, it is characterised in that: the matching part is in close to bolt head side.
3. folding head bolt according to claim 2, it is characterised in that: on screw rod side wall excircle, the auxiliary section is set
It is equipped with the axially extending and spaced straight-tooth along the screw rod.
4. folding head bolt according to claim 3, it is characterised in that: the straight-tooth is zigzag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822034700.9U CN209705036U (en) | 2018-12-05 | 2018-12-05 | A kind of folding head bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822034700.9U CN209705036U (en) | 2018-12-05 | 2018-12-05 | A kind of folding head bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209705036U true CN209705036U (en) | 2019-11-29 |
Family
ID=68636016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822034700.9U Active CN209705036U (en) | 2018-12-05 | 2018-12-05 | A kind of folding head bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209705036U (en) |
-
2018
- 2018-12-05 CN CN201822034700.9U patent/CN209705036U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20100047035A1 (en) | Fastening element | |
| CN103541982B (en) | A kind of Nested-type single-side bolt fastener | |
| CN106286555A (en) | Self locking anti-loose nut | |
| US20160003279A1 (en) | Anchor head and anchor nut for a tension anchor | |
| US20170191269A1 (en) | High-strength fastening device | |
| US7938606B2 (en) | Expanding screw | |
| CN106015265A (en) | Internal screw for check bolt, and check bolt assembly | |
| US20160186795A1 (en) | Threaded screw with shank slot | |
| CA2781763A1 (en) | Self-drilling bolt and nut assembly | |
| CN209705036U (en) | A kind of folding head bolt | |
| CN100424317C (en) | Device for fastening fittings on multi-chamber profiles | |
| CN211820288U (en) | Fastener with pretension function | |
| DK1813827T3 (en) | The screw and the method of making a screw | |
| CN202914489U (en) | Composite bolt | |
| CN205184681U (en) | Double threaded screw installation device and inside and outside silk swivel nut installation device | |
| CN111271358A (en) | Fastener with pre-tightening function and mounting and breaking-in method thereof | |
| CN203297235U (en) | Novel expansion bolt | |
| EP2317160A2 (en) | Double-thread screw for concrete | |
| CN202811774U (en) | Thread positioning lock structure | |
| CN109185313A (en) | A kind of elastic locking inserted num | |
| CN203051366U (en) | Fastening screw | |
| JP5485657B2 (en) | Civil engineering bolts | |
| CN203822797U (en) | Anti-dismantle bolt | |
| CN210397394U (en) | Fixed torque screw | |
| CN204876349U (en) | Steel bar anchoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |