CN2423437Y

CN2423437Y - Expansion bolt for thin-wall board

Info

Publication number: CN2423437Y
Application number: CN 00222808
Authority: CN
Inventors: 王正荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-04-13
Filing date: 2000-04-13
Publication date: 2001-03-14
Anticipated expiration: 2010-04-13

Abstract

The utility model relates to an expansion bolt which is used for thin-wall boards belonging to a connecting member, particularly to the expansion bolt which is used for construction and fitment industry. An expansion sleeve of the bolt is divided into a fixed segment and a movable segment. The two segments are connected by an elastic member. An elastic fin sheet which is expanded outwards is arranged on the expansion sleeve. When the expansion bolt which is used for thin-wall boards is used, the movable segment is pulled by the bolt, and the fin sheet is expanded and tightly pressed on a wall surface. The expansion bolt which is used for thin-wall boards has the advantages of simple structure and easy manufacture and installation. The expansion bolt which is used for thin-wall boards can be tightly fixed to the thin-wall boards nicely.

Description

The thin-walled part EXPANSION ANCHOR BOLTS

The utility model belongs to link, the EXPANSION ANCHOR BOLTS of particularly build, decorative craft being used.

Traditional EXPANSION ANCHOR BOLTS all is to utilize bolt to screw in, and with the front end distending of expansion sleeve, thereby front end tightly is stuck in the hole of wall.It is preferably that this EXPANSION ANCHOR BOLTS is used for thicker wallboard effect, but is used in thin wallboard, and as ceiling board, when thin-walled cuts off wallboard, fastening effect is just very poor.For addressing this problem, the scheme of the expansion of metal cover of hollow outs in the middle of some has been proposed in the Chinese patent literature, when bolt tightened, the intermediate deformation projection of cover was clamped in the both sides of plate.In actual use, the deformation position of this expansion sleeve is irregular, sometimes can not fine clamping both sides, loosening phenomenon is arranged; Sometimes indeformable, or distortion inward, do not expand; When loosening, if continue to bolt on, Chang Yi draws thin-walled bad.

The purpose of this utility model provides a kind of suitable thin-walled part EXPANSION ANCHOR BOLTS, and it is simple in structure, makes and installs easily, and just in time the plate holder with different wall is tight.

The technical solution of the utility model is: the expansion sleeve of this EXPANSION ANCHOR BOLTS is separated into two sections of holding part and active segments, connects with elastic component between two sections, has flared elasticity fin on the expansion sleeve.The pressure elasticity fin is filled in the hole during installation, and when bolting on, fin is progressively launched by pressure in the active segment moving process, tightly is stuck in the both sides of wallboard, does not stay loosening gap.

Below, two specific embodiments of the present utility model according to Figure of description provides are further described its structure.

Fig. 1 is the expansion sleeve schematic representation of fin at holding part;

Fig. 2 is the expansion sleeve schematic representation of fin at active segment.

See Fig. 1, when elasticity fin 2 is arranged on the holding part 1 of expansion sleeve, active segment 3 is connected on the fin 2 by compressing tablet 4, and promptly holding part 1 is connected with active segment 3 formation elasticity with compressing tablet 4 by fin 2, when screwing in bolt (not drawing), active segment 3 holding part 1 that furthered, fin 2 is compressed by compressing tablet 4 and progressively launches, and therefore can clamp the wallboard of different-thickness, simultaneously, fin has certain elasticity, so can not draw wallboard bad; Same principle can be arranged on elasticity fin 2 on the active segment 3 of expansion sleeve, sees Fig. 2, with spring 5 sections of being connected and fixed 1 and active segment 3, fin 2 is connected on the active segment 3, (does not draw) when bolt tightens, active segment 3 is drawn gradually, and fin 2 also is pressed on the wallboard gradually.Just the expansion of fin 2 is to push by wallboard to realize at this moment.

From technique scheme of the present utility model, this EXPANSION ANCHOR BOLTS is very suitable to be fixed on the thin hollow wall, can adjust with wall thickness, does not stay loosening gap, and it is simple in structure, makes and installs easily, when bolting on, is difficult for drawing wallboard bad.

Claims

1, a kind of EXPANSION ANCHOR BOLTS is made up of screw and expansion sleeve, it is characterized in that expansion sleeve is separated into two sections of holding part and active segments, and two intersegmentally connect with elastic component, have flared elasticity fin on the expansion sleeve.

2, by the described EXPANSION ANCHOR BOLTS of claim 1, it is characterized in that elastic component is that fin and compressing tablet connect and compose, fin is connected the holding part of expansion sleeve, and active segment is connected in fin by compressing tablet.

3, by the described EXPANSION ANCHOR BOLTS of claim 1, it is characterized in that elastic component is a spring, spring section of being connected and fixed and active segment, fin is connected on the active segment.