CN2269489Y

CN2269489Y - Expanding bolt

Info

Publication number: CN2269489Y
Application number: CN 96223162
Authority: CN
Inventors: 谈建民
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-12-26
Filing date: 1996-12-26
Publication date: 1997-12-03
Anticipated expiration: 2006-12-26

Abstract

The utility model relates to an expanding bolt which mainly solves the problem of inconvenient use and non-effective fixation. The utility model is characterized in that both ends of a nylon expanding tube are provided with open slots, and the inner surface of the nylon expanding tube is provided with a lug boss; a chamfering is arranged on the lug boss and one end of the bolt is provided with a flange whose inner surface is provided with a raised line inosculated with the open slot on one end of the nylon expanding tube, and the other end of the nylon expanding tube is provided with screw threads. A raised line inosculated with the open slot on the other end of the nylon expanding tube is arranged on a pushing rod along a longitudinal direction, and the outer surface of one end of the pushing rod is provided with a conical surface inosculated with the chamfering on the lug boss on the inner surface of the nylon expanding tube; the pushing rod and the nylon expanding tube are sheathed on the bolt.

Description

A kind of EXPANSION ANCHOR BOLTS

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

In prior art, general EXPANSION ANCHOR BOLTS is by bolt, metal expansion pipe and nut are formed, the tapered body of an end at bolt, the other end has screw thread, one end of metal expansion pipe has opening slot, metal expansion pipe is enclosed within on the bolt, nut is spun on the bolt, during use, screws nut and metal expansion pipe with opening slot one end is expanded along with the taper on the bolt and EXPANSION ANCHOR BOLTS is fixed, but, when tapered body one end was not withstood on the bolt, bolt can rotate simultaneously along with nut, can't make the expansion of metal tube swelling, use inconvenience, and can not be effectively fixing.

The purpose of this utility model provides a kind of EXPANSION ANCHOR BOLTS of easy to use and fixation.

The utility model is by bolt, the nylon expansion tube, push rod and nut are formed, it is characterized in that: the two ends of nylon expansion tube have opening slot, the internal surface of nylon expansion tube has boss, on boss, has chamfering, end at bolt has flange, the internal surface of flange has the raised line that the opening slot with nylon expansion tube one end matches, the other end has screw thread, push rod hollow, on push rod, longitudinally has the raised line that the opening slot with the nylon expansion tube the other end matches, the outer surface of push rod one end has the conical surface that the chamfering on the internal surface boss with the nylon expansion tube matches, and push rod and nylon expansion tube are enclosed within on the bolt, and nut is spun on the bolt.

Because the two ends of the utility model nylon expansion tube have opening slot, the internal surface of nylon expansion tube has boss, on boss, has chamfering, end at bolt has flange, the internal surface of flange has the raised line that the opening slot with nylon expansion tube one end matches, the other end has screw thread, push rod hollow, on push rod, longitudinally has the raised line that the opening slot with the nylon expansion tube the other end matches, the outer surface of push rod one end has the conical surface that the chamfering on the internal surface boss with the nylon expansion tube matches, push rod and nylon expansion tube are enclosed within on the bolt, nut is spun on the bolt, during use, screw nut, the nylon expansion tube is expanded under the effect of the conical surface on the push rod, because raised line and the raised line on the push rod on the bolt flange are entrenched in the opening slot of nylon expansion tube, so bolt can be along with nut rotate simultaneously, and is easy to use, and can the jail fixing regularly.

Below in conjunction with accompanying drawing the utility model is elaborated,

Fig. 1 is a structural representation of the present utility model,

Fig. 2 is the structural representation of the utility model nylon expansion tube,

Fig. 3 is the structural representation of the utility model push rod,

Fig. 4 is the structural representation of the utility model bolt,

The two ends of nylon expansion tube 1 have opening slot, the internal surface of nylon expansion tube has boss, on boss, has chamfering, end at bolt 2 has flange 3, the internal surface of flange has the raised line 4 that the opening slot with nylon expansion tube one end matches, the other end has screw thread, push rod 5 hollows, on push rod, longitudinally has the raised line 6 that the opening slot with the nylon expansion tube the other end matches, the outer surface of push rod one end has the conical surface that the chamfering on the internal surface boss with the nylon expansion tube matches, push rod and nylon expansion tube are enclosed within on the bolt, nut 7 is spun on the bolt, for the EXPANSION ANCHOR BOLTS after fixing can not inwardly be advanced and rock, on push rod, has boss, on boss, have conical surface, an end internal surface of nylon expansion tube have with the push rod boss on the chamfering that matches of conical surface, expanded simultaneously in the front end and back end of EXPANSION ANCHOR BOLTS.

Claims

1, a kind of EXPANSION ANCHOR BOLTS, comprise bolt, the nylon expansion tube, push rod and nut, it is characterized in that: the two ends of nylon expansion tube have opening slot, the internal surface of nylon expansion tube has boss, on boss, has chamfering, end at bolt has flange, the internal surface of flange has the raised line that the opening slot with nylon expansion tube one end matches, the other end has screw thread, push rod hollow longitudinally has the raised line that the opening slot with the nylon expansion tube the other end matches on push rod, the outer surface of push rod one end has the conical surface that the chamfering on the internal surface boss with the nylon expansion tube matches, push rod and nylon expansion tube are enclosed within on the bolt, and nut is spun on the bolt.

2, according to right 1 described a kind of EXPANSION ANCHOR BOLTS, it is characterized in that: on push rod, have boss, on boss, have conical surface, an end internal surface of nylon expansion tube have with the push rod boss on the chamfering that matches of conical surface.