CN105156428A

CN105156428A - Expansion bolt

Info

Publication number: CN105156428A
Application number: CN201510569096.8A
Authority: CN
Inventors: 黄传勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-09-09
Filing date: 2015-09-09
Publication date: 2015-12-16

Abstract

The invention aims to provide an expansion bolt good in fixing effect. The expansion bolt comprises an expansion sleeve and a bolt. The bolt is installed in the expansion sleeve. The key is that the fixed end of the expansion sleeve is provided with a main non-return piece, one end of the main non-return piece is integrally connected with the sleeve wall, and the other end of the main non-return piece is a free end and is in the direction of the fixed end of the expansion bolt. A cone-frustum-shaped or conical nut is rotatably installed at the position of the bolt exposed out of the fixed end of the expansion sleeve, the sleeve wall of the expansion sleeve is provided with a plurality of auxiliary non-return pieces, one end of each auxiliary non-return piece is integrally connected with the sleeve wall, the other end of each auxiliary non-return piece is a free end, and the free ends of the auxiliary non-return pieces are warped up and are in the direction of the fixed end of the expansion sleeve. The shaking of the expansion bolt relative to a wall is avoided through the simultaneous limiting of the main non-return piece and the auxiliary non-return pieces, and the fixing effect is greatly enhanced.

Description

A kind of EXPANSION ANCHOR BOLTS

Technical field

The invention belongs to technical field of fastening, be related specifically to a kind of EXPANSION ANCHOR BOLTS.

Background technique

EXPANSION ANCHOR BOLTS in general be expansible anchor of metal, its fixation principle is as follows: EXPANSION ANCHOR BOLTS utilize wedge shape gradient to impel expand produce friction bond stress, reach fixed effect.One, bolt is screw thread, and one has tapering.Outer bread one iron sheet cylinder, there are some otch one end of iron sheet cylinder, they are filled in hole that wall is accomplished fluently together, then split nut, nut pulls outward bolt, tapering is drawn in iron sheet cylinder, and the incision of iron sheet cylinder is by spreading, so tightly fixing on the wall, be generally used for fastening on the material such as cement, brick such as protective grating, rain cover, air-conditioning.

There is following shortcoming in above-mentioned EXPANSION ANCHOR BOLTS: EXPANSION ANCHOR BOLTS only has one end by spreading, and fixed effect is poor.

Summary of the invention

The object of the invention is the EXPANSION ANCHOR BOLTS proposing a kind of good fixing effect.

EXPANSION ANCHOR BOLTS of the present invention comprises expansion sleeve and bolt, described bolt is installed in expansion sleeve, and key is that the fixed end of described expansion sleeve is provided with main non-return sheet, and one end of described main non-return sheet is connected with barrel one, the other end is free end, and towards the fixed end direction of expansion sleeve; The position that described bolt is exposed to the end of expansion sleeve fixed end is installed with a round table-like or taper nut; The barrel of described expansion sleeve is provided with several auxiliary non-return sheets, and one end of described auxiliary non-return sheet is connected with barrel one, and the other end is free end, and the free end of auxiliary non-return sheet tilts and towards the fixed end direction of expansion sleeve.

When mounted, first (diameter in this hole should equal or slightly larger than the diameter of expansion sleeve to utilize drill bit on wall, get out the hole of predetermined depth and diameter, the degree of depth in this hole should slightly larger than the length of expansion sleeve), then EXPANSION ANCHOR BOLTS is put into this hole, utilize the instrument such as screw driver or spanner to twist bolt, bolt is rotated relative to expansion sleeve.While screws, the nut on bolt will move along bolt, and is tilted by the free end of main non-return sheet and snap in wall, and expansion sleeve cannot be moved by opposing sides again, achieves fixing EXPANSION ANCHOR BOLTS.Meanwhile, auxiliary non-return sheet defines barb, also can prevent expansion sleeve from cannot move to wall outside, improve fixed effect.

Further, the outer surface of the stub end of described nut is provided with outstanding spline sheet, and described spline sheet is parallel to the axis of bolt.If the hole internal diameter in body of wall is larger, when rotating bolt, likely can drive nut synchronous rotary, main non-return sheet cannot be strutted, after arranging spline sheet, spline sector-meeting is embedded in body of wall, can prevent nut from rotating relative to body of wall, thus nut under bolt effect, can only be moved along bolt.

Further, described expansion sleeve is the cylinder structure that sheet material is rolled into, and described main non-return sheet and auxiliary non-return sheet are all arranged on expansion sleeve with impact style, to reduce costs.

Further, the end of described bolt is taper, so that bolt is mobile to body of wall inside.

EXPANSION ANCHOR BOLTS of the present invention can by spacing while of main non-return sheet and auxiliary non-return sheet, and avoid EXPANSION ANCHOR BOLTS and rock relative to body of wall, fixed effect strengthens greatly.

Accompanying drawing explanation

Fig. 1 is the structure sectional view of the EXPANSION ANCHOR BOLTS of embodiment 1.

Accompanying drawing indicates: 1, expansion sleeve; 2, main non-return sheet; 3, bolt; 4, nut; 5, auxiliary non-return sheet; 6, spline sheet.

Embodiment

Contrast accompanying drawing below, by the description to embodiment, the effect and working principle etc. of the specific embodiment of the present invention as the mutual alignment between the shape of involved each component, structure, each several part and annexation, each several part are described in further detail.

Embodiment 1:

As shown in Figure 1, the EXPANSION ANCHOR BOLTS of the present embodiment comprises expansion sleeve 1 and bolt 2, described bolt 2 is installed in expansion sleeve 1, key is that the fixed end of described expansion sleeve 1 is provided with main non-return sheet 3, one end of described main non-return sheet 3 is connected with barrel one, the other end is free end, and towards the fixed end direction of expansion sleeve 1; The position that described bolt 2 is exposed to the end of expansion sleeve 1 fixed end is installed with a round table-like or taper nut 4; The barrel of described expansion sleeve 1 is provided with several auxiliary non-return sheets 5, and one end of described auxiliary non-return sheet 5 is connected with barrel one, and the other end is free end, and the free end of auxiliary non-return sheet 5 tilts and towards the fixed end direction of expansion sleeve 1.

Further, the outer surface of the stub end of described nut 4 is provided with outstanding spline sheet 6, and described spline sheet 6 is parallel to the axis of bolt 2.If the hole internal diameter in body of wall is larger, when rotating bolt 2, likely can drive nut 4 synchronous rotary, main non-return sheet 3 cannot be strutted, after arranging spline sheet 6, spline sheet 6 can be embedded in body of wall, can prevent nut 4 from rotating relative to body of wall, thus nut 4 under bolt 2 acts on, can only be moved along bolt 2.

Specifically, the cylinder structure that described expansion sleeve 1 is rolled into for sheet material, described main non-return sheet 3 and auxiliary non-return sheet 5 are all arranged on expansion sleeve 1, to reduce costs with impact style.

When mounted, first (diameter in this hole should equal or slightly larger than the diameter of expansion sleeve 1 to utilize drill bit on wall, get out the hole of predetermined depth and diameter, the degree of depth in this hole should slightly larger than the length of expansion sleeve 1), then EXPANSION ANCHOR BOLTS 2 is put into this hole, utilize the instruments such as bolt 2 cutter or spanner to twist bolt 2, bolt 2 is rotated relative to expansion sleeve 1.While bolt 2 rotates, the nut 4 on bolt 2 will move along bolt 2, and is tilted by the free end of main non-return sheet 3 and snap in wall, and expansion sleeve 1 cannot be moved by opposing sides again, achieves fixing EXPANSION ANCHOR BOLTS 2.Meanwhile, auxiliary non-return sheet 5 defines barb, also can prevent expansion sleeve 1 from cannot move to wall outside, improve fixed effect.

Claims

1. an EXPANSION ANCHOR BOLTS, comprises expansion sleeve and bolt, and described bolt is installed in expansion sleeve, it is characterized in that the fixed end of described expansion sleeve is provided with main non-return sheet, one end of described main non-return sheet is connected with barrel one, and the other end is free end, and towards the fixed end direction of expansion sleeve; The position that described bolt is exposed to the end of expansion sleeve fixed end is installed with a round table-like or taper nut; The barrel of described expansion sleeve is provided with several auxiliary non-return sheets, and one end of described auxiliary non-return sheet is connected with barrel one, and the other end is free end, the free end tilting of auxiliary non-return sheet towards the fixed end direction of expansion sleeve.

2. EXPANSION ANCHOR BOLTS according to claim 1, it is characterized in that the outer surface of the stub end of described nut is provided with outstanding spline sheet, described spline sheet is parallel to the axis of bolt.

3. EXPANSION ANCHOR BOLTS according to claim 1 and 2, it is characterized in that described expansion sleeve is the cylinder structure that sheet material is rolled into, described main non-return sheet and auxiliary non-return sheet are all arranged on expansion sleeve with impact style.

4. EXPANSION ANCHOR BOLTS according to claim 1 and 2, is characterized in that the end of described bolt is taper.