CN209398695U

CN209398695U - A kind of anti-transfer expansion bolt of gasket-type

Info

Publication number: CN209398695U
Application number: CN201822111588.4U
Authority: CN
Inventors: 秦建锋
Original assignee: Jiaxing Yufeng Automobile Parts Co Ltd
Current assignee: Jiaxing Yufeng Auto Parts Co.,Ltd.
Priority date: 2018-12-17
Filing date: 2018-12-17
Publication date: 2019-09-17
Anticipated expiration: 2028-12-17

Abstract

The utility model discloses a kind of anti-transfer expansion bolts of gasket-type, the casing being sequentially sleeved on bolt including bolt and from bottom to up, gasket, spring washer and nut, the bolt includes screw rod and the expansion-head positioned at screw rod bottom end, the top of the screw rod is equipped with external screw thread, the center of described sleeve pipe is equipped with first through hole, the top and bottom end of described sleeve pipe are respectively equipped with protrusion and slice, described sleeve pipe outer wall is equipped with several from the first groove through tube wall for extending medially to bottom end, the gasket is equipped with the second groove corresponding with protrusion, the cooperation of casing and gasket can be passed through, prevent casing transfer therewith during bolt precession early period, make the spreading of casing shoe by expansion-head, preset hole wall is pierced into using the tip of casing shoe, prevent casing transfer therewith during later period bolt precession, until set Manage thorough spreading.

Description

A kind of anti-transfer expansion bolt of gasket-type

[technical field]

The utility model relates to the technical field of expansion bolt, the technology of especially a kind of anti-transfer expansion bolt of gasket-type Field.

[background technique]

Currently, being needed using expansion bolt that apparatus body or other structures is attached in the installation process of certain equipment Part is fixed on ground or wall.Common connection method is punched in advance on ground or wall, and casing is then placed in And bolt, then fixed again with gasket.If but the material of ground or wall when being punched on ground perhaps wall Matter is bigger than normal than more loose or punching bit diameter, causes to form clearance fit between preset holes and expansion sleeve, tighten During screw rod, occur casing rotated with bolt and rotate transfer the problem of, installed so as to cause device unstable Gu.

[utility model content]

The purpose of this utility model is exactly to solve the problems of the prior art, proposes a kind of anti-transfer expanding screw of gasket-type Bolt can effectively prevent casing transfer.

To achieve the above object, the utility model proposes a kind of anti-transfer expansion bolt of gasket-type, including bolt and from Under the supreme casing being sequentially sleeved on bolt, gasket, spring washer and nut, the bolt include screw rod and be located at screw rod The expansion-head of bottom end, the top of the screw rod are equipped with external screw thread, and the center of described sleeve pipe is equipped with first through hole, the top of described sleeve pipe End and bottom end are respectively equipped with protrusion and slice, described sleeve pipe outer wall be equipped with several from extend medially to bottom end through tube wall The first groove, the gasket is equipped with and corresponding second groove of protrusion.

Preferably, the diameter of the screw rod is less than the internal diameter of first through hole.

Preferably, the screw rod and expansion-head are structure as a whole, the expansion-head is truncated cone-shaped, and the expansion-head enters Casing can be made along the first groove spreading when casing.

Preferably, the outer surface of the protrusion is equipped with coarse lines.

Preferably, the slice is the reverse frustoconic of hollow out and the bottom end for being circumferentially positioned at casing, the slice Top be equipped with tip, the maximum outside diameter of the slice is less than the maximum outside diameter of expansion-head.

Preferably, the center of the gasket is equipped with the second through-hole, also set on the gasket around the outside of the second through-hole There are several threaded holes.

Preferably, the bottom side surface of the gasket is equipped with coarse lines.

The utility model has the beneficial effects that when preset aperture is larger or foundation wall short texture, the utility model Casing transfer therewith during bolt precession early period can be prevented, makes to cover by expansion-head by the cooperation of casing and gasket The spreading at tube bottom end is pierced into preset hole wall using the tip of casing shoe, prevent casing during later period bolt precession with Transfer, until the thorough spreading of casing.

The feature and advantage of the utility model will be described in detail by embodiment combination attached drawing.

[Detailed description of the invention]

Fig. 1 is a kind of main view of the anti-transfer expansion bolt of gasket-type of the utility model；

Fig. 2 is a kind of main view of the casing of the anti-transfer expansion bolt of gasket-type of the utility model；

Fig. 3 is a kind of top view of the casing of the anti-transfer expansion bolt of gasket-type of the utility model；

Fig. 4 is a kind of bottom view of the gasket of the anti-transfer expansion bolt of gasket-type of the utility model；

Fig. 5 is a kind of main view of the bolt of the anti-transfer expansion bolt of gasket-type of the utility model；

In figure: 1- bolt, 11- screw rod, 111- external screw thread, 12- expansion-head, 2- casing, 21- protrusion, the first groove of 22-, 23- slice, the tip 231-, 24- first through hole, 3- gasket, the second groove of 31-, the second through-hole of 32-, 33- threaded hole, 4- spring Washer and 5- nut.

[specific embodiment]

Refering to fig. 1 to Fig. 5, a kind of anti-transfer expansion bolt of gasket-type of the utility model, including bolt 1 and from bottom to up according to The secondary casing 2 being set on bolt 1, gasket 3, spring washer 4 and nut 5, the bolt 1 is including screw rod 11 and is located at screw rod The expansion-head 12 of 11 bottom ends, the top of the screw rod 11 are equipped with external screw thread 111, and the center of described sleeve pipe 2 is equipped with first through hole 24, The top and bottom end of described sleeve pipe 2 are respectively equipped with protrusion 21 and slice 23, and 2 outer wall of described sleeve pipe is equipped with several and prolongs from center Extend to the first groove 22 through tube wall of bottom end, the gasket 3 be equipped with raised 21 corresponding second grooves 31, it is described The diameter of screw rod 11 is less than the internal diameter of first through hole 24, and the screw rod 11 and expansion-head 12 are structure as a whole, the expansion-head 12 For truncated cone-shaped, when 12 sleeve pipe 2 of expansion-head, can make casing 2 along 22 spreading of the first groove, raised 21 outside Surface is equipped with coarse lines, and the slice 23 is the reverse frustoconic of hollow out and the bottom end for being circumferentially positioned at casing 2, and described cuts The top of piece 23 is equipped with tip 231, and the maximum outside diameter of the slice 23 is less than the maximum outside diameter of expansion-head 12, the gasket 4 Center be equipped with the second through-hole 32, the outside on the gasket 4 around the second through-hole 32 is additionally provided with several threaded holes 33, described The bottom side surface of gasket 4 is equipped with coarse lines.

Utility model works process:

A kind of anti-transfer expansion bolt of gasket-type of the utility model during the work time, first by the through-hole pair of part to be fixed Then the bolt 1 for being cased with casing 2 is inserted into preset holes with the direction directed downwardly of expansion-head 12 by the preset holes on quasi- ground or wall In, side of the casing 2 with slice 23 is close to expansion-head 12.Then gasket 3, spring washer 4 and nut 5 are sequentially passed through into bolt 1 and make 2 top of casing protrusion 21 be inserted into 3 bottom end of gasket the second groove 31 in.Then, tightening nut 5, so that bolt 1 is not Upward turn break until expansion-head 12 is squeezed into the first through hole 24 of casing 2, so that casing 2 is along 22 spreading of the first groove, and And in casing 2 during spreading, the tip 231 for being sliced 23 is gradually pierced into the hole walls of preset holes.It is coarse on the outside of protrusion 21 Lines can prevent protrusion 21 from deviating from from the second groove 31, and the coarse lines of 3 bottom surface of gasket increases between gasket 3 and part to be fixed Frictional force, the diameter of screw rod 11 is less than the internal diameter of first through hole 24, reduces the friction between screw rod 11 and casing 2, prevent Before tip 231 is pierced into the hole wall of preset holes, the transfer therewith during 1 turn of bolt of casing 2 and gasket 3.If part to be fixed Surface is relatively smooth, can by several screws pass through gasket 3 third threaded hole 33 by gasket 3 be fixed on part to be fixed and its On lower wall, after expansion bolt is installed, screw can be further taken out.

When preset aperture is larger or foundation wall short texture, the utility model can matching by casing and gasket It closes, prevents casing transfer therewith during bolt precession early period, the spreading of casing shoe is made by expansion-head, utilizes casing The tip of bottom end is pierced into preset hole wall, prevents casing transfer therewith during later period bolt precession, until casing thoroughly rises It opens.

Above-described embodiment is the explanation to the utility model, is not the restriction to the utility model, and any pair of sheet is practical new Scheme after type simple transformation belongs to the protection scope of the utility model.

Claims

1. a kind of anti-transfer expansion bolt of gasket-type, it is characterised in that: be sequentially sleeved at bolt including bolt (1) and from bottom to up (1) casing (2), gasket (3), spring washer (4) and nut (5) on, the bolt (1) include screw rod (11) and be located at spiral shell The top of the expansion-head (12) of bar (11) bottom end, the screw rod (11) is equipped with external screw thread (111), and the center of described sleeve pipe (2) is set Have first through hole (24), the top and bottom end of described sleeve pipe (2) are respectively equipped with raised (21) and slice (23), described sleeve pipe (2) Outer wall is equipped with several from the first groove (22) through tube wall for extending medially to bottom end, the gasket (3) equipped with Raised (21) corresponding second groove (31).

2. a kind of anti-transfer expansion bolt of gasket-type as described in claim 1, it is characterised in that: the diameter of the screw rod (11) Less than the internal diameter of first through hole (24).

3. a kind of anti-transfer expansion bolt of gasket-type as described in claim 1, it is characterised in that: the screw rod (11) and expansion Head (12) is structure as a whole, and the expansion-head (12) is truncated cone-shaped, and whens expansion-head (12) sleeve pipe (2) can make casing (2) along the first groove (22) spreading.

4. a kind of anti-transfer expansion bolt of gasket-type as described in claim 1, it is characterised in that: the outside of the protrusion (21) Surface is equipped with coarse lines.

5. a kind of anti-transfer expansion bolt of gasket-type as described in claim 1, it is characterised in that: the slice (23) is to engrave The top of the reverse frustoconic of sky and the bottom end for being circumferentially positioned at casing (2), the slice (23) is equipped with tip (231), described Slice (23) maximum outside diameter be less than expansion-head (12) maximum outside diameter.

6. a kind of anti-transfer expansion bolt of gasket-type as described in claim 1, it is characterised in that: the center of the gasket (3) Equipped with the second through-hole (32), several threaded holes (33) are additionally provided on the outside of the second through-hole (32) on the gasket (3).

7. a kind of anti-transfer expansion bolt of gasket-type as described in claim 1, it is characterised in that: the bottom side of the gasket (3) Surface is equipped with coarse lines.