CN202937573U

CN202937573U - Expansion bolt

Info

Publication number: CN202937573U
Application number: CN 201220613413
Authority: CN
Inventors: 王丹净; 许艾琳
Original assignee: Wuxi Institute of Commerce
Current assignee: Wuxi Institute of Commerce
Priority date: 2012-11-20
Filing date: 2012-11-20
Publication date: 2013-05-15
Anticipated expiration: 2022-11-20

Abstract

The utility model discloses an expansion bolt. The expansion bolt comprises an expansion sleeve (1), a fixed bolt and a lining board (3), wherein the fixed bolt is sleeved with the expansion sleeve; the lining board (3) is arranged at the tail end of the expansion sleeve; an expansion top bolt (4) which is used for pushing the lining board (3) for being expanded and fixed is arranged at the position at which the expansion top bolt is connected with the lining board in the expansion sleeve; the lining board is internally tapered; the expansion top bolt is trapezoidal; and the inner wall at the front end of the expansion sleeve is thread-shaped. According o the expansion bolt disclosed by the utility model, a conventional outward stretching and expanding mode of the expansion bolt is creatively changed into an inwards pressing mode, so that on one hand, the bolt is prevented from being pulled out, and on the other hand, the expansion sleeve is prevented from being exposed out of the fixing surface; and not only can a conventional fixing mode be achieved, but also a hiding purpose can be achieved by adopting the two bolts for fixation. Besides, the bolt can be replaced by a common bolt while being damaged.

Description

A kind of EXPANSION ANCHOR BOLTS

Technical field

The utility model relates to a kind of EXPANSION ANCHOR BOLTS.

Background technique

EXPANSION ANCHOR BOLTS is the very high fixed block of routine use frequency, but conventional EXPANSION ANCHOR BOLTS is all to adopt the bottom taper bolt outwards to stretch, expansion sleeve is expanded, therefore bolt is all to exceed fixed pan, for there being the fixation case of hiding requirement to realize, if stationary plane is more loose, be easy to EXPANSION ANCHOR BOLTS is pulled out, impact is fixing, and bolt is impaired can't substitute with plain bolt.

Summary of the invention

Technical problem to be solved in the utility model is to propose a kind of EXPANSION ANCHOR BOLTS, this EXPANSION ANCHOR BOLTS innovation ground becomes inside press mode from the mode of the outside drawn expanded of conventional EXPANSION ANCHOR BOLTS, prevent from pulling out on the one hand bolt, prevent that on the other hand expansion sleeve from exposing stationary plane, adopt two kinds of bolts to fix, both can realize conventional means of fixation, can realize again the purpose of hiding, if bolt failure can also adopt plain bolt to substitute.

The utility model is for solving the problems of the technologies described above by the following technical solutions:

A kind of EXPANSION ANCHOR BOLTS, the fixing bolt that comprises expansion sleeve, socket-connects with expansion sleeve; The end of described expansion sleeve is provided with liner plate, with the joint of liner plate, is provided with for expansion top that promotes that liner plate makes that it expands fixing and fastens in expansion sleeve.

As the further optimized project of a kind of EXPANSION ANCHOR BOLTS of the utility model, described liner plate is inner conical, and described expansion is pushed up and fastened as trapezoidal.

As the further optimized project of a kind of EXPANSION ANCHOR BOLTS of the utility model, the front inner wall of described expansion sleeve is shape of threads.

As the further optimized project of a kind of EXPANSION ANCHOR BOLTS of the utility model, the outer wall of described fixing bolt is shape of threads.

As the further optimized project of a kind of EXPANSION ANCHOR BOLTS of the utility model, the outer wall of described fixing bolt front end is shape of threads.

The utility model adopts above technological scheme, compared with prior art has following technique effect:

1, this EXPANSION ANCHOR BOLTS innovation ground becomes inside press mode from the mode of the outside drawn expanded of conventional EXPANSION ANCHOR BOLTS, prevents from pulling out bolt on the one hand, prevents that on the other hand expansion sleeve from exposing stationary plane.

2, adopt two kinds of bolts to fix, both can realize conventional means of fixation, can realize again the purpose of hiding.

If 3 bolt failure can also adopt plain bolt to substitute.

Description of drawings

Fig. 1 is the structural representation of the EXPANSION ANCHOR BOLTS of a kind of EXPANSION ANCHOR BOLTS of the utility model.

Fig. 2 is the expansion push rod structure schematic diagram of a kind of EXPANSION ANCHOR BOLTS of the utility model.

Fig. 3 is the outside thread fixing bolt structural representation of a kind of EXPANSION ANCHOR BOLTS of the utility model.

Fig. 4 is the polished rod fixing bolt structural representation of a kind of EXPANSION ANCHOR BOLTS of the utility model.

Fig. 5 is the gasket construction schematic diagram of a kind of EXPANSION ANCHOR BOLTS of the utility model.

Fig. 6 is a kind of EXPANSION ANCHOR BOLTS nut structure of the utility model schematic diagram.

Number in the figure: the 1-expansion sleeve, the 2-screw thread, 3-inner conical liner plate, the trapezoidal expansion of 4-is pushed up and is fastened, 5-expansion push rod, 6-polished rod fixing bolt, 7-screw thread, 8-outside thread fixing bolt, 9-pad, 10-nut.

Embodiment

Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail:

As shown in Figure 1 and Figure 2, EXPANSION ANCHOR BOLTS is by expansion sleeve 1(band internal thread 2), inner conical liner plate 3, trapezoidal expansion top fastens 4, expansion push rod 5 forms.

First get out suitable hole before fixing on stationary plane, expansion sleeve 1 is filled in bored in good hole, then expansion push rod 5 is filled in expansion sleeve 1, used hammer to knock the part that expansion push rod 5 exposes stationary plane, the other end of expansion push rod 5 withstands on trapezoidal expansion top and fastens on 4, promotion expansion top is fastened 4 and is moved forward, the inner conical liner plate 3 of compressing opening forces it to expand, and reaches fixing purpose, after fixing, take out expansion push rod 5.

As shown in Figure 3, if there is no special fixedly requirement, the user can be with outside thread 7 with outside thread fixing bolt 8() screw-in expansion sleeve 1, again fixed object is enclosed within on outside thread fixing bolt 8 that (outside thread fixing bolt 8 can withstand on trapezoidal expansion top after screwing in and fasten on 4, the top that prevents from expanding is fastened 4 and is moved backward, guarantees that inner conical liner plate 3 keeps swelling states, thereby plays the anticreep effect), then put into pad 9, screw at last nut 10.Pad 9, the structure of nut 10 such as Fig. 5, shown in Figure 6.

As shown in Figure 4, if the requirement of hiding bolt is arranged, as: what hang is shelving board, and the user can be with outside thread 7 with polished rod fixing bolt 6() screw in expansion sleeve 1, then fixed object is enclosed within the polished rod part of polished rod fixing bolt 6, reach hiding purpose.

Claims

1. EXPANSION ANCHOR BOLTS, the fixing bolt that comprises expansion sleeve (1), socket-connects with expansion sleeve; It is characterized in that, the end of described expansion sleeve is provided with liner plate (3), with the joint of liner plate, is provided with for expansion top that promotes that liner plate (3) makes that it expands fixing and fastens (4) in expansion sleeve.

2. a kind of EXPANSION ANCHOR BOLTS according to claim 1, is characterized in that, described liner plate is inner conical, and described expansion is pushed up and fastened as trapezoidal.

3. a kind of EXPANSION ANCHOR BOLTS according to claim 1, is characterized in that, the front inner wall of described expansion sleeve is shape of threads.

4. a kind of EXPANSION ANCHOR BOLTS according to claim 3, is characterized in that, the outer wall of described fixing bolt is shape of threads.

5. a kind of EXPANSION ANCHOR BOLTS according to claim 3, is characterized in that, the outer wall of described fixing bolt front end is shape of threads.