CN203585008U

CN203585008U - Anti-loosening sleeve type setscrew

Info

Publication number: CN203585008U
Application number: CN201320773544.2U
Authority: CN
Inventors: 林年盛
Original assignee: SHANGHAI SHINGQI HARDWARE CO Ltd
Current assignee: SHANGHAI SHINGQI HARDWARE CO Ltd
Priority date: 2013-12-02
Filing date: 2013-12-02
Publication date: 2014-05-07
Anticipated expiration: 2023-12-02

Abstract

The utility model relates to an anti-loosening sleeve type setscrew which at least comprises a metal bolt, a sleeve, a gasket and an anti-loosening nut, wherein the sleeve comprises a sleeve part and an expansion part; the expansion part comprises notches and an expansion claw which is formed by pipe walls between the notches; the metal bolt at least comprises a thread part and an expansion plug part; the expansion plug part is a plug-shaped end; the thread part of the metal bolt is inserted into the sleeve from the expansion part of the sleeve and then is connected with the gasket, the anti-loosening nut and a screw joint in turn; the length of the metal bolt except the expansion part is more greater than the sum of the thicknesses of the sleeve, the gasket and the anti-loosening nut. The anti-loosening sleeve type setscrew can ensure the fixing effect of the setscrew as an embedded part in a substrate. An operator is can no longer worry about the expansion state of the setscrew in the substrate or the expansion degree of the expansion claw. If the anti-loosening sleeve type setscrew is applied to the roof suspended ceiling, the anti-loosening sleeve type setscrew is more safe and reliable.

Description

Loose-proof sleeve tubular type setscrew

Technical field

The utility model relates to a kind of setscrew, especially refers to a kind of loose-proof sleeve tubular type setscrew.

Background technique

In the prior art, be similar to the applicant in shown in the ZL201220668742.8 of application in 2012, a kind of gluing setscrew, for being fixed on the matrix positioning hole that is full of anchoring adhesive, comprise bolt, expansion sleeve and female stopper, the screw thread of bolt mates with the internal thread of stopper, expansion sleeve is comprised of sleeve pipe and bulge, wherein bulge forms expansion pawl by otch and the tube wall between otch and forms, and described stopper is filled in bulge being expanded in expansion sleeve and made the as a whole film parcel that is retracted from described bulge.In installation process, when bolt screws, make stopper along screw thread to expansion sleeve in-pipe, expansion bulge, reach fixation, but the utility model still has a problem to exist: whether unknowable bolt is idle running, even if bolt is screwing, also mobile in the directed expansion sleeve of unknowable described stopper one.

So in the prior art, for the setscrew being embedded in matrix, in use, whether its bulge expands, how to detect the whether generation effect of its bulge, become a great problem.

Model utility content

The utility model object is to provide a kind of loose-proof sleeve tubular type setscrew, makes described loose-proof sleeve tubular type setscrew tighten lock nut or be subject to after load, and bulge can automatic expansion, and the utility model can be installed on roof ceiling system.

To achieve the above object of the invention, the technological scheme that the utility model provides is:

A loose-proof sleeve tubular type setscrew, at least comprises metal bolts, sleeve, pad and lock nut, and described sleeve comprises sleeve part and bulge, and described bulge forms expansion pawl by otch and the tube wall between otch and forms, wherein:

Described metal bolts at least comprises screw section and expansion piston part, described expansion piston part is plug shape end, as conical plug shape end, the screw section of described metal bolts penetrates from the bulge of sleeve, through described sleeve, connect successively at least again pad, lock nut and turnbuckle, the length that described metal bolts removes expansion piston part is greater than described sleeve, pad and lock nut thickness sum.Described turnbuckle can be a HEX HEAD CAP SCREWS joint.After this HEX HEAD CAP SCREWS joint one end is connected with described metal bolts, the other end can connect miscellaneous part according to actual needs, such as Full Thread FT suspension rod.

On such scheme basis, described lock nut is double anti-loosing nut, is carved with locking line on the junction surface of described double anti-loosing nut and pad, plays dual locking effect.

On such scheme basis, described metal bolts is pressed into one after being connected with described turnbuckle.Specifically, can in described turnbuckle, establish a pressing port, after described turnbuckle is connected with described metal bolts, by this pressing port, described metal bolts and described turnbuckle are pressed into one.Can prevent the accidental of described turnbuckle like this.

Connecting means of the present utility model is very simple: the screw section of described metal bolts is penetrated from the bulge of described sleeve, and through described sleeve, the screw section of described metal bolts connects pad, lock nut and turnbuckle more successively, now, the expansion piston part of described metal bolts is still positioned at outside the bulge of described sleeve.If needed, now, also described metal bolts and nut connector can be pressed into one.

Two kinds of methods can be opened the bulge of the utility model middle sleeve:

Method 1, rotation lock nut, makes described lock nut screw to sleeve, the expansion piston part of described metal bolts is pushed in the bulge of sleeve thus, after the bulge of described sleeve is stressed, along the otch of bulge, open expansion pawl, play the effect of fixed expansion screw;

Method 2, after described turnbuckle is stressed, produce pulling force, drive described metal bolts to move to turnbuckle place, the expansion piston part of described metal bolts is pushed in the bulge of sleeve thus, after the bulge of described sleeve is stressed, along the otch of bulge, open expansion pawl, play the effect of fixed expansion screw.

The utility model can guarantee that the bulge of described setscrew expands, thereby has guaranteed that setscrew is as embedded part, the fixed effect in matrix.Make operator needn't worry again whether setscrew expands in matrix, or the expanded size problem of expansion pawl.If the utility model is for roof furred ceiling, more safe and reliable.

Accompanying drawing explanation

Accompanying drawing 1 is the utility model STRUCTURE DECOMPOSITION figure;

Accompanying drawing 2 is the utility model expansion pre-structure schematic diagram;

Accompanying drawing 3 screws schematic diagram after lock nut for the utility model;

Accompanying drawing 4 is the stressed rear schematic diagram of the turnbuckle in the utility model.

Attached number in the figure explanation:

1---metal bolts;

11---expansion piston part; 12---screw section;

2---sleeve;

21---bulge; 22---sleeve part;

23---otch; 24---expansion pawl;

3---pad;

4---double anti-loosing nut; 41---locking line;

5---HEX HEAD CAP SCREWS joint; 51---pressing port;

61---gap one; 62---gap two.

Embodiment

Refer to accompanying drawing, the utility model is further described.

As shown in Fig. 1 the utility model STRUCTURE DECOMPOSITION figure and Fig. 2 the utility model expansion pre-structure schematic diagram, a kind of loose-proof sleeve tubular type setscrew, at least comprise metal bolts 1, sleeve 2, pad 3 and lock nut 4, described sleeve 2 comprises sleeve part 22 and bulge 21, wherein bulge 21 forms expansion pawl 24 by otch 23 and the tube wall between otch and forms, wherein, described metal bolts 1 at least comprises screw section 12 and expansion piston part 11, described expansion piston part 11 is a plug shape end, the screw section 12 of described metal bolts 1 penetrates from the bulge 21 of sleeve 2, through described sleeve 2, connect successively at least again pad 3, double anti-loosing nut 4 and HEX HEAD CAP SCREWS joint 5, the length that described metal bolts 1 removes expansion piston part 11 is greater than described sleeve 2, pad 3 and lock nut 4 thickness sums, be D>d1+d2+d3 in Fig. 1.After described HEX HEAD CAP SCREWS joint 5 one end are connected with described metal bolts 1, the other end can connect miscellaneous part according to actual needs, such as Full Thread FT suspension rod (not shown).

On the junction surface of described double anti-loosing nut 4 and pad 3, be carved with locking line 41, play dual locking effect.

On such scheme basis, can on described HEX HEAD CAP SCREWS joint 5, establish a pressing port 51, after described HEX HEAD CAP SCREWS joint 5 is connected with described metal bolts 1, by this pressing port 51, described metal bolts 1 is pressed into one with described HEX HEAD CAP SCREWS joint 5, can prevents like this accidental of described turnbuckle.

For another example Fig. 3 the utility model screw after lock nut the stressed rear schematic diagram of turnbuckle in schematic diagram and Fig. 4 the utility model respectively shown in, existing two methods can make the bulge of the utility model middle sleeve open.

As shown in schematic diagram after Fig. 3 the utility model screws lock nut, rotation double anti-loosing nut 4, described double anti-loosing nut 4 is screwed to sleeve 2, the expansion piston part 11 of described metal bolts is to the interior extruding of bulge 21 of sleeve thus, after the bulge 21 of described sleeve is stressed, otch 23 along bulge is opened expansion pawl 24, plays the effect of fixed expansion screw.After double anti-loosing nut 4 screws to sleeve 2, between described double anti-loosing nut 4 and HEX HEAD CAP SCREWS joint 5, can produce gap 61, by observing gap 61, can check bulge 21 of the present utility model whether successfully to expand, and can calculate the expanded size of expansion pawl 24.

As shown in rear schematic diagram difference as stressed in the turnbuckle in Fig. 4 the utility model, after described HEX HEAD CAP SCREWS joint 5 is stressed, produce pulling force (if the utility model is installed on roof furred ceiling, the pulling force of described HEX HEAD CAP SCREWS joint 5 is downward load), drive described metal bolts 1 to move to HEX HEAD CAP SCREWS joint 5 places, the expansion piston part 11 of described metal bolts is to the interior extruding of bulge 21 of sleeve thus, after the bulge 21 of described sleeve is stressed, otch 23 along bulge is opened expansion pawl 24, plays the effect of fixed expansion screw.After HEX HEAD CAP SCREWS joint 5 is stressed, described pad 3, double anti-loosing nut 4 and HEX HEAD CAP SCREWS joint 5 together leave matrix, between described pad 3 and matrix, produce gap 62, by observing gap 62, can check bulge 21 of the present utility model whether successfully to expand, and can calculate the expanded size of expansion pawl 24.

To sum up, utilize the utility model to construct, only need to observe matrix outside whether gapped 61 or gap 62, can judge whether the bulge of the utility model middle sleeve expands, also also can calculate by observing the distance in 61Huo gap, described gap 62 expanded size of expansion pawl.

Claims

1. a loose-proof sleeve tubular type setscrew, at least comprises metal bolts, sleeve, pad and lock nut, and described sleeve comprises sleeve part and bulge, and described bulge forms expansion pawl by otch and the tube wall between otch and forms, and it is characterized in that:

Described metal bolts at least comprises screw section and expansion piston part, described expansion piston part is a plug shape end, the screw section of described metal bolts penetrates from the bulge of sleeve, through described sleeve, connect successively at least again pad, lock nut and turnbuckle, the length that described metal bolts removes expansion piston part is greater than described sleeve, pad and lock nut thickness sum.

2. loose-proof sleeve tubular type setscrew according to claim 1, is characterized in that: on the junction surface of described lock nut and pad, be carved with locking line.

3. loose-proof sleeve tubular type setscrew according to claim 1, is characterized in that: described metal bolts is pressed into one after being connected with described turnbuckle.