CN201973029U

CN201973029U - Expansion bolt with expansion sheet

Info

Publication number: CN201973029U
Application number: CN2011200960559U
Authority: CN
Inventors: 王金志
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-04
Filing date: 2011-04-04
Publication date: 2011-09-14
Anticipated expiration: 2021-04-04

Abstract

The utility model relates to an expansion bolt with an expansion sheet; the expansion bolt comprises a bolt, an expansion part and a gasket, wherein the expansion part is a trumpet-shaped expansion sheet with a round opening; teeth are arranged at the periphery of the edge of the expansion sheet; a screw hole is arranged at the middle part of the expansion sheet; gaps or breaches are arranged on the expansion sheet in a direction from the edge to the center at the inner side; three to ten gaps or breaches are arranged and are uniformly distributed in the range of 360 degrees; and the bolt is connected with the screw hole on the expansion sheet. As the expansion part is platy, the expansion bolt is very easy to manufacture, can be punched and formed directly by using a punching machine and does not need complex equipment; as the manufacturing material utilization amount is between one tenth to one fifth of that of the prior art, the manufacturing cost is substantially reduced; and the expansion bolt is convenient in use and firm in connection, and is suitable for fixing parts on the wall and ground as well as fixing the parts on workpieces with tubular holes.

Description

The swell fixture of band intumescent sheet

Technical field

The utility model relates to a kind of swell fixture, particularly relates to a kind of swell fixture with intumescent sheet.

Background technique

The expansion piece of the swell fixture of existing prior art is the expansion piece of pipe shape, preparation process more complicated, cost height.

Summary of the invention

The purpose of this utility model just provides a kind of swell fixture with intumescent sheet, and preparation process is simple, and cost is low.

For achieving the above object, the utility model adopts following technological scheme:

A kind of swell fixture with intumescent sheet, comprise: screw, expansion piece, pad, its opening of described expansion piece is the flaring intumescent sheet of circle, one week at the edge of intumescent sheet is provided with teeth, the middle part of intumescent sheet is provided with screw, and intumescent sheet is provided with from the edge slit of central direction or gap to the inside, its slit or gap 3-10 bar, and 360 degree uniform, screw is connected with screw on the intumescent sheet.

The slit on the described intumescent sheet or the length of gap be the intumescent sheet radius 1/3rd to 1/2nd between.

The beneficial effects of the utility model: because expansion piece is the sheet intumescent sheet, thereby make very easy, the direct impact briquetting of available punch press, do not need complex device, the Manufacturing material consumption have only prior art 1/10th to 1/5th between, thereby reduced fabricating cost significantly, easy to use, be connected firmly, be not only applicable on the wall, ground fixed component, also be applicable to fixed component on the workpiece that is provided with [.

Description of drawings

Fig. 1 is one of them embodiment's of the utility model a perspective view.

Fig. 2 is the component decomposing schematic representation of Fig. 1.

Fig. 3 is the plan view of one of them embodiment's intumescent sheet.

Fig. 4 is the plan view of Fig. 3.

Fig. 5 be another embodiment of intumescent sheet plan view.

Fig. 6 is the plan view of Fig. 5.

Fig. 7 is the schematic representation of the utility model user mode.

Embodiment

Referring to figs. 1 through Fig. 6 as can be seen, the utility model comprises: screw 2, expansion piece, pad 1, the expansion piece opening is the flaring intumescent sheet 3 of circle, one week at the edge of intumescent sheet is provided with teeth 5, the middle part of intumescent sheet is provided with screw 6, and intumescent sheet is provided with from the edge slit of central direction or gap 4 to the inside, when being set to gap on the intumescent sheet, its gap is the gap (referring to Fig. 6) of the little band angle in the big inboard of outer openings, and its angle is between 1 degree is spent to 35.The length of described intumescent sheet slit or gap be the intumescent sheet radius 1/3rd to 1/2nd between, its slit or gap 3-10 bar and 360 degree are uniform, screw 2 connects the screw 6 on the intumescent sheets 3.Described slit 4 can be the straight line slit, and expansion is come when the slit, just becomes to have had the gap of angle.

Fig. 7 is the schematic representation of the utility model user mode.If workpiece is connected on the wall, just earlier on wall, punch 7 during use, the aperture of being punched equates with the external diameter of intumescent sheet 3 or is slightly larger than intumescent sheet, connect pad 1 and workpiece 8 with screw 2, connect intumescent sheet 3 again, the intumescent sheet horn mouth connects to the lateral direction in hole, again intumescent sheet is put into the hole, pad 1 progressively screws screw on the workpiece in the outside, hole, because the intumescent sheet edge is provided with a lot of teeth, its teeth just have been stuck on the wall in hole, along with the tension of screw, intumescent sheet is expanded to hole wall, thereby draws workpiece more tight.

Claims

1. swell fixture with intumescent sheet, comprise: screw (2), expansion piece, pad (1), it is characterized in that: its opening of expansion piece is the flaring intumescent sheet (3) of circle, one week at the edge of intumescent sheet is provided with teeth (5), the middle part of intumescent sheet is provided with screw (6), and intumescent sheet is provided with from the edge slit of central direction or gap (4) to the inside, and its slit or gap are provided with the 3-10 bar, and 360 degree uniform, screw (2) is connected with screw (6) on the intumescent sheet (3).

2. a kind of swell fixture with intumescent sheet according to claim 1 is characterized in that: the slit on the intumescent sheet or the length of gap be the intumescent sheet radius 1/3rd to 1/2nd between.