CN2316499Y - Expansion bolt - Google Patents

Abstract

The utility model relates to an expansion bolt comprising an opening arranged at the end part, a bolt and a fastener washer. The open end of an expansion tube is provided with a cone which is provided with internal screw-threads. The other exposed end of the expansion tube of a screw rod matched with the internal screw-threads of the cone is provided with a bolt head integrated with the screw rod. The utility model has the advantages of simple structure, easy production and convenient installation, and the construction speed and the effect of appearance decoration are evidently enhanced.

Description

A kind of EXPANSION ANCHOR BOLTS

The utility model relates to a kind of bolt of architectural decoration, particularly a kind of expansion spiral shell inspection that increases aesthetic appearance.

In construction, indoor and outdoor were decorated, metope was inlayed or composite furniture etc. is installed, and all needs EXPANSION ANCHOR BOLTS.Existing commercially available EXPANSION ANCHOR BOLTS is to be made of expansion tube, the screw rod that has frustum and fastener nut thereof, packing ring.Battalion's one end that wherein expands is processed with opening.During use, utilize packing ring and nut that the frustum of screw rod end is fixed tightly in the opening end of expansion tube, the tube wall of opening end is swollen reinforce in pre-manufactured hole, and then unload lower nut, be inserted in the article that to inlay in the screw rod end, as glass mirror, decorative sheet, board etc.In work progress, because of screw rod end protruded length is limited, long, too short then can't the outer cover decorating cap, influence decorative effect, so use inconvenience.

The purpose of this utility model provides a kind of improved EXPANSION ANCHOR BOLTS, and its simple in structure, easy processing, easy for installation can significantly improve speed of application and exterior decorative effect.

The purpose of this utility model is achieved in that this expansion spiral shell inspection comprises that there is expansion tube, bolt and the fastening piece packing ring thereof of opening the end, wherein the expansion tube opening end is provided with tapped frustum, another exposes the expansion pipe end screw rod that matches with the frustum internal thread, has and screw rod all-in-one-piece bolt head.

Because the utility model will have the structure of EXPANSION ANCHOR BOLTS screw rod now and fundamentally be improved, keep the expansion tube of original tape opening, the structure of packing ring not to change substantially, so be easy to realize.With former integral type screw rod and frustum, be processed into split type thread joined structure, the threaded end of former processing is provided with bolt head.The threaded end of screw rod after the improvement matches with the frustum internal thread, utilizes the tapped hole of the anchor stud head control screw rod screw-in frustum of its other end, makes frustum get into the expansion tube opening end, the expansion tube swelling is reinforced get final product.Because of screw rod exposes the expansion pipe end is anchor stud head, so its outward appearance need not to install additional other decoration, just can reach the purpose that improves decorative effect.Therefore its processing is easier than former screw rod, installs more conveniently, can significantly improve speed of application.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is a kind of concrete structure schematic representation of the present utility model.

Describe concrete structure of the present utility model in detail according to Fig. 1.This spiral shell inspection comprises expansion tube 2, frustum 1, screw rod 3, packing ring 4.Wherein expansion tube 2 still adopts prior art constructions, and the one end is processed with opening slot.Frustum 1 endoporus is processed with internal thread, and its periphery is a taper, inserts the inner chamber of expansion tube 2.For prevent that frustum 1 from rotating along circumferential when stressed, also can on frustum 1 periphery, the retaining platform be set, utilize the opening fixed limit of expansion tube 2.Tapped frustum 1 is arranged on expansion tube 2 opening ends.Threaded screw rod 3 ends of processing that match with frustum 1 internal thread can move axially along the internal thread of frustum 1.Another exposes the expansion pipe end screw rod 3, is provided with and screw rod 3 all-in-one-piece bolt heads 5.Bolt head 5 can be the countersunk head of square head, hexagon head or band " one " word groove, " ten " word groove.

During use, frustum 1 is enclosed within expansion tube 2 opening ends, the internal thread that is spun on frustum 1 with screw rod 3 threaded end of belt washer 4 fuses.Then the bulk expansion bolt is placed in the pre-manufactured hole, turn spiral shell inspection 5 is reinforced in pre-manufactured hole frustum 1 distending expansion tube.Unload screw rod 3, the corresponding article of inlaying of packing into are reinforced with screw rod 3 and are got final product.Install very convenient.Utilize this bolt can carry out indoor and outdoor and decorate, inlay metope, expansion tube 2 periphery walls are processed anti-skidding hangnail, also available this bolt is installed article such as composite furniture.

Claims (2)

1, a kind of EXPANSION ANCHOR BOLTS, comprise that there is expansion tube, bolt and the fastening piece packing ring thereof of opening the end, it is characterized in that the expansion tube opening end is provided with tapped frustum, another exposes the expansion pipe end screw rod that matches with the frustum internal thread, has and screw rod all-in-one-piece bolt head.

2, EXPANSION ANCHOR BOLTS according to claim 1 is characterized in that the bolt head of described bolt can be the countersunk head of square head, hexagon head or band " one " word groove, " ten " word groove.