CN2290565Y

CN2290565Y - Fastening hoop

Info

Publication number: CN2290565Y
Application number: CN 97212315
Authority: CN
Inventors: 邱安里
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-03-06
Filing date: 1997-03-06
Publication date: 1998-09-09
Anticipated expiration: 2007-03-06

Abstract

The utility model provides a fastening hoop which comprises a hoop head (1) and a metal strip (2), wherein, a section of inverse folding plate (4) is crossly cut and convexly covered in the intermediate position of a longitudinal groove (1) of the hoop head (1) which is formed by punching metal sheet materials, and both sides of a groove at the head part of one end are respectively provided with a folding clamping jaw (5). The fixed end (7) of the metal strip (2) penetrates through a channel hole formed between the longitudinal groove (3) of the hoop head (1) and the inverse folding plate (4), and clamps the hoop head (1) at the end head which is provided with the folding clamping jaws (5). When the utility model is used, the metal strip (2) with a proper length can be used according to the diameter of a plastic pipe (8) which is bundled fixedly, and the loose end (6) of the metal strip penetrates through the channel hole above the fixed end (7), is folded back and is bended and tightly pressed by the folding clamping jaws (5) after tightened.

Description

A kind of Fastening hoop

The utility model relates to a kind of Fastening hoop of receiving the plastic cement pipe of the tight suit of clamping with metal strap.

Existing on the market, the most close with the invention product structure plastic cement pipe Fastening hoop is to receive the bundle hoop of the version of folder metal strap pine end to be fitted in the bolt of pricking on the hoop head.The specification limit that this class Fastening hoop uses is fitted in the length of pricking the binding bolt on the hoop and is fitted in the restriction of the nut location on the metal strap pine end, and its size that tightens up power depends on the mechanical strength of binding bolt, for considering productive costs and using price, the binding bolt that the general impossible adapted quality matetrial of Fastening hoop commonly used is made is so cause the reliability of its use to be difficult to be fully guaranteed.

The purpose of this utility model is to provide a kind of specification limit simple in structure, suitable big, in-use performance failure-free Fastening hoop to the public.

This novel Fastening hoop also includes pricks hoop head and metal strap, create purpose for realizing foregoing invention, the technical measures of being taked are, it pricks the hoop head is to use the metal sheet punch forming, the bundle hoop head of this metal sheet punching out need not any annex that is welded in addition, main is that its center line position has a longitudinal fluting, on the middle part of this longitudinal fluting, the crosscut longitudinal fluting, the relative oppositely protruding one section fold back plate that covering with the groove mouth, and respectively be provided with a slice folding jaw in the groove both sides at the position, a termination of longitudinal fluting, width and the fixed end of pricking a hoop longitudinal fluting corresponding metal tape are to pass the access opening that is constituted between the longitudinal fluting of pricking the hoop head and fold back plate, turn back downwards in the end of pricking the hoop head and have the folding jaw and smooth on the bottom surface of pricking the hoop head, collude to clip prick the hoop head, when needing to use, the pine end of metal strap passes from the fixed end top and pricks the access opening that constitutes between a hoop longitudinal fluting and fold back plate, after tightening up, the termination is developed near the fold back plate fold back that makes progress, and be pressed on above the metal strap pine end with the bending of folding jaw.

The bundle hoop head of this novel Fastening hoop and metal strap all are punch formings, and structure and production technology are very simple, and cost is lower, and it is just capable that its Applicable scope is just taken the metal strap of suitable length by the plastic cement pipe diameter of consolidate bundle; Its fastening force depends on the mechanical strength of metal strap, and nature is considerably beyond the mechanical strength of general screw thread, so be difficult for getting loose.

Below in conjunction with accompanying drawing, preferred embodiment of the utility model is comprehensively described in detail:

Fig. 1 is a configuration state diagrammatic sketch of the present utility model;

Fig. 2 is a structural representation of pricking the hoop head;

Fig. 3 is a running condition scheme drawing of the present utility model;

The metal sheet of hoop head (1) is pricked in punching out, can be according to the diameter and the wall thickness of the fastening plastic cement pipe (8) of need, selecting thickness for use is 0.7～2 millimeter stainless steel substrates or galvanized iron sheet, and metal strap (2) then can select for use 0.3～1.5 millimeter stainless steel band or galvanized iron just passable.The degree of depth of pricking the longitudinal fluting (3) of hoop head (1) is about 1～1.5 times of metal strap (2) thickness, and the height that fold back plate (4) protrudes groove (3) upper limb is that 0.5～1 times of thickness of metal strap (2) gets final product.The front end head of fold back plate (4) is preferably made sawtooth mouth shape, to increase friction force.Folding jaw (a 5) width of pricking hoop head (1) upper groove (3) both sides, end generally get 5～8 millimeters just much of that.Pine end (6) fold back of metal tape (2) partly exceeds the length of folding jaw (5) more preferably greater than rolling over jaw (5) width more than 1.5 times; The fold back of the fixed end (7) of metal tape (2) length partly should be greater than pricking the over half of hoop head (1) longitudinal length.

Claims

1, a kind of Fastening hoop, comprise and prick hoop head (1) and metal strap (2), it is characterized in that: on the middle part of the longitudinal fluting (3) of the bundle hoop head (1) of metal sheet punching out, crosscut longitudinal fluting (3), the relative oppositely protruding one section fold back plate (4) that covering with the groove mouth, respectively be provided with a slice folding jaw (5) in the groove both sides at the position, a termination of longitudinal fluting (3), the fixed end (7) of metal strap (2) passes pricks the access opening that constitutes between hoop head (1) longitudinal fluting (3) and fold back plate (4), there is the end of folding jaw (5) to turn back downwards at bundle hoop head (1), smooth colluding in the bottom surface of pricking hoop head (1) clips bundle hoop head (1), the pine end (6) of metal strap (2) passes from fixed end (7) top and pricks the access opening that constitutes between hoop head (1) longitudinal fluting (3) and fold back plate (4), the termination near fold back plate (4) upwards fold back develop, be pressed on above metal strap (2) the pine end (6) after the bending of folding jaw (5).