CN205244062U

CN205244062U - Detachable screw that expands

Info

Publication number: CN205244062U
Application number: CN201521105040.9U
Authority: CN
Inventors: 姚炳戌
Original assignee: Exceedingly High Accurate Fastening Piece Co Ltd In Sky Tianjin
Current assignee: Exceedingly High Accurate Fastening Piece Co Ltd In Sky Tianjin
Priority date: 2015-12-24
Filing date: 2015-12-24
Publication date: 2016-05-18
Anticipated expiration: 2025-12-24

Abstract

The utility model discloses a detachable screw that expands, include the screw rod, overlap the expansion sleeve on the screw rod, the screw front end is the cone, the screw rod rear end is equipped with screw thread a, the expansion sleeve front end has the inflation head, and the first rear portion of expanding constitutes tapered groove, and the first front end that expands is for being cut into the cylinder of four or six components of a whole that can function independentlys along radial class, in the screw front end cone embedding tapered groove, the screw rod end stretches out expansion sleeve and fixed connection nut a, threaded b on the inner wall of expansion sleeve rear end matches with screw thread an on the screw rod each other, the expansion sleeve overcoat has the screw shell, the screw shell is cylindrical, expansion sleeve's inflation head is in the outside of screw shell, be equipped with the screw c of mutual matching between expansion sleeve and the rotatory sleeve. The utility model discloses the inflation screw can all take out in the wall body. Do not destroy simultaneously in the current wall with the wall on the hole, do not result in aesthetic problems.

Description

A kind of dismountable swell fixture

Technical field

The utility model relates to a kind of swell fixture, is specifically related to a kind of dismountable swell fixture.

Background technology

The swell fixture that expansion sleeve is hard material at present, as the swell fixture of ferrous material expansion sleeve, its mechanism with stronger load is that whole swell fixture puts into behind the hole of previously having accomplished fluently, turn the nut on screw, outwards stretching screw, major part below screw rod separates the expansion-head below expansion sleeve, just being stuck in body of wall tightly of the major part of expansion sleeve. Its shortcoming is to be tufted into after body of wall tension when swell fixture, swell fixture just cannot take out from body of wall, wanting to punch at same position, to hammer into swell fixture just impossible again, sometimes the use of swell fixture, it is several one group, a swell fixture can not use for some reason, and other several swell fixtures all can not use; The swell fixture screw rod not taking out stretches out wall also to be affected attractive in appearance outward.

Utility model content

In order to overcome the deficiencies in the prior art, the utility model provides a kind of dismountable swell fixture.

To achieve these goals, the utility model adopts following technical scheme:

A kind of dismountable swell fixture, comprises screw rod, is placed on the expansion sleeve on screw rod, and described screw front end is cone; Described spiro rod rear end is provided with screw thread a; Described expansion sleeve front end has expansion-head, and expansion-head rear portion forms conical socket, and expansion-head front end is radially to wait the cylinder that is cut into four or six splits; Described screw front end cone embeds in conical socket; Described screw rod end stretches out expansion sleeve and is fixedly connected with nut a; On the inwall of expansion sleeve rear end, there is screw thread b, mutually mate with the screw thread a on screw rod; Described expansion sleeve overcoat has screw sheel; Screw sheel is cylindrical; The expansion-head of expansion sleeve is in the outside of screw sheel; Between described expansion sleeve and turnbarrel, be provided with the mutual screw thread c mating.

Further, in technique scheme, the end of described expansion sleeve is fixedly connected with nut b.

Further, in technique scheme, the end of described screw sheel is fixedly connected with nut c, and nut b and nut c outline size, shape are identical.

Due to said structure of the present utility model, after swell fixture is put into the hole of previously having accomplished fluently and screwed, if when need to changing the position of swell fixture or giving it up, fix expansion sleeve; Screw rod is outwards screwed out, fix turnbarrel, outwards slow circumvolve expansion sleeve; The expansion-head of expansion sleeve is due to pressure-acting, to indentation in turnbarrel, when in the complete precession turnbarrel of expansion-head of expansion sleeve, swell fixture all taken out in body of wall.

The beneficial effect of utility model

The utility model swell fixture is in installation process, or after using, be tufted into the swell fixture of body of wall tension, can from body of wall, take out, after swell fixture is put into the hole of previously having accomplished fluently and screwed, if when need to changing the position of swell fixture or giving it up, fix expansion sleeve; Screw rod is outwards screwed out, fix turnbarrel, outwards slow circumvolve expansion sleeve; The expansion-head of expansion sleeve is due to pressure-acting, to indentation in turnbarrel, when in the complete precession turnbarrel of expansion-head of expansion sleeve, swell fixture all taken out in body of wall. Do not destroy simultaneously existing within the walls with metope on hole, do not affect the appearance.

Brief description of the drawings

Fig. 1 is the utility model structural representation;

In figure, 1, screw rod; 2, expansion sleeve; 3, screw thread a; 4, expansion-head; 5, conical socket; 6, cylinder; 7, cone; 8, nut a; 9, nut b; 10, nut c; 11, screw sheel; 12, screw thread c.

Detailed description of the invention

Further illustrate with reference to the accompanying drawings.

Embodiment 1

As shown in Figure 1, a kind of dismountable swell fixture, comprises screw rod 1, is placed on the expansion sleeve 2 on screw rod 1, and screw rod 1 front end is cone 7; Screw rod 1 rear end is provided with screw thread a3; Expansion sleeve 2 front ends have expansion-head 4, and expansion-head 4 rear portions form conical socket 5, and expansion-head 4 front ends are radially to wait the cylinder 6 that is cut into four or six splits; Screw rod 1 front end cone 7 embeds in conical socket 5; Screw rod 1 end stretches out expansion sleeve 2 and is fixedly connected with nut a8; On expansion sleeve 2 rear end inwalls, there is screw thread b9, mutually mate with the screw thread a3 on screw rod 1; Expansion sleeve 2 overcoats have screw sheel 11; Screw sheel 11 is cylindrical; The expansion-head 4 of expansion sleeve 2 is in the outside of screw sheel 11; Between expansion sleeve 2 and turnbarrel, be provided with the mutual screw thread c12 mating. The end of expansion sleeve 2 is fixedly connected with nut b9. The end of screw sheel 11 is fixedly connected with nut c10, and nut b9 and nut c10 outline size, shape are identical.

Above; it is only preferably detailed description of the invention of the utility model; but protection domain of the present utility model is not limited to this; any be familiar with those skilled in the art the utility model disclose technical scope in; be equal to replacement or changed according to the technical solution of the utility model and utility model design thereof, within all should being encompassed in protection domain of the present utility model.

Claims

1. a dismountable swell fixture, is characterized in that: comprise screw rod, be placed on the expansion sleeve on screw rod, described screw front end is cone; Described spiro rod rear end is provided with screw thread a; Described expansion sleeve front end has expansion-head, and expansion-head rear portion forms conical socket, and expansion-head front end is radially to wait the cylinder that is cut into four or six splits; Described screw front end cone embeds in conical socket; Described screw rod end stretches out expansion sleeve and is fixedly connected with nut a; On the inwall of expansion sleeve rear end, there is screw thread b, mutually mate with the screw thread a on screw rod; Described expansion sleeve overcoat has screw sheel; Screw sheel is cylindrical; The expansion-head of expansion sleeve is in the outside of screw sheel; Between described expansion sleeve and turnbarrel, be provided with the mutual screw thread c mating.

2. dismountable swell fixture according to claim 1, is characterized in that: the end of described expansion sleeve is fixedly connected with nut b.

3. dismountable swell fixture according to claim 2, is characterized in that: the end of described screw sheel is fixedly connected with nut c.