CN2193457Y

CN2193457Y - Expansible fastening

Info

Publication number: CN2193457Y
Application number: CN 93225598
Authority: CN
Inventors: 冯传根
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-04-22
Filing date: 1993-04-22
Publication date: 1995-03-29
Anticipated expiration: 2003-04-22

Abstract

The utility model discloses an expansion fastening piece. The left end of a sleeve tube is provided with a plurality of axial grooves, the left end of an expansion stud is a round table, the right part is a cylinder expansion stud sheathed in the sleeve tube from left to right, the length of the cylinder at the right part of the expansion stud is shorter than the length of the sleeve tube, a screw thread hole is arranged in the middle of the expansion stud and the length of a screw nail in the screw thread hole is longer than the length of the screw thread hole. When is the utility model is used, one end of the sleeve tube is opened in an expanded way, the sleeve tube is sheathed on the cylinder at the right part of the expansion stub, the rotating screw nail moves towards the direction of the stud under the action of a screw thread, and one end of the sleeve tube is opened in an expanded way. The utility model has the advantages of reasonable structure, convenient manufacture and use, reliable using performance, beautiful decoration appearance, etc.

Description

Expansible fastening

The utility model relates to a kind of link, especially a kind of novel expansion fastener.

At present, the expansion fastener that generally adopts in construction at home and abroad and the decoration, generally, structure is expansion post bolt and is placed among the sleeve pipe, microcephaly at the post bolt establishes screw thread, and be rotary with a nut, screw nut, then the post bolt moves and forces sleeve pipe trough of belt one end to be opened by swollen, connects the effect of object thereon thereby play to be fastened on, though this fastening piece is also easy to use, but the post screw bolt and nut must be exposed to the outside when using, thereby influenced attractive in appearancely,, otherwise then can't use simultaneously if fix door and window then must be provided with doorframe and window frame architectural with it.

It is a kind of simple in structure that the purpose of this utility model is to provide, and makes easy to use and can apply to the installation of door and window and do not need the novel expansion fastener of doorframe and window frame.

The technical solution of the utility model is: original EXPANSION ANCHOR BOLTS is transformed, made the length of sleeve pipe longer than the right part shell portion length that is placed on expansion post bolt wherein, and establish a tapped hole at the right part of expansion post bolt, screw threads places between tapped hole.Force the pipe box left end by distending during use earlier, turn screw again, just can drag screw moves to post bolt direction, thereby reach fastening purpose, only need turn screw during owing to operation, so it is comparatively attractive in appearance to decorate fastening his beyond the region of objective existence shape with it, if between screw and sleeve pipe, set up a hinge, thereby then under the condition that need not doorframe and window frame just fixedly door and window simplified the cost that decorating process has also been saved building, and easy to use, profile is more attractive in appearance.

The utlity model has simple in structure, make easy to use, advantages such as beautiful shape reliable performance.

Fig. 1 is overall structure figure of the present utility model

Fig. 2 is expansion post stud structure figure of the present utility model

Fig. 3 is the structural representation of sleeve pipe of the present utility model

Discuss most preferred embodiment of the present utility model below in conjunction with accompanying drawing, as shown in the figure, present embodiment is by sleeve pipe (1), expansion post bolt (2) and screw (3) are formed, the left end of sleeve pipe (1) is provided with some axial grooves (4), expansion post bolt (2) left end is a round platform, right part is a cylindrical body, expansion post bolt (2) is placed in the sleeve pipe (1) from left to right, the right part cylinder length of its expansion post bolt (2) is shorter than the length of sleeve pipe (1), right part at the swollen post bolt (2) that expands is established an axial centre tapped hole (5), and screw (3) is spun in the tapped hole (5), and the length of screw (3) is greater than the length of tapped hole (5).

Claims

1, a kind of novel expansion fastener, form by sleeve pipe (1), expansion post bolt (2) and screw (3), it is a round platform that the left end of sleeve pipe (1) is provided with some axial grooves (4) expansion post bolts (2) left end, right part is a cylindrical body, expansion post bolt (2) is placed in the sleeve pipe (1) from left to right, the right part cylinder length of post bolt (2) of it is characterized in that expanding is shorter than the length of sleeve pipe (1), establish an axial centre tapped hole (5) at the right part of expansion post bolt (2), screw (3) is spun in the tapped hole (5), and the length of screw (3) is longer than the length of tapped hole (5).