CN2771564Y

CN2771564Y - Chain

Info

Publication number: CN2771564Y
Application number: CN 200420108814
Authority: CN
Inventors: 单金龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-11-16
Filing date: 2004-11-16
Publication date: 2006-04-12
Anticipated expiration: 2014-11-16

Abstract

The utility model discloses a chain, which is formed by connecting arc-shaped chain pieces with rivets, wherein the arc-shaped chain pieces are provided with rectilinear bulges which curve towards one side; the front and the rear chain pieces are arranged oppositely. When the chain pieces are unfolded straightly, the bulges on the chain pieces are jointed into a straight line so that the chain pieces can avoid bending towards the other side and can bear a certain horizontal force without bending. The utility model has the advantages of simple structure and convenient operation.

Description

A kind of chain

Technical field

The utility model belongs to a kind of transmission chain bar, particularly a kind of can only being particularly useful for using on the window opener to a direction curved chain.

Background technique

The unlatching of the window of large-scale place such as gymnasium, cinema etc. and the pass window utmost point are required to be automatic control, and existing start-stop device mostly adopts the supporting structure of band tooth bar, realize that control automatically is comparatively difficult.If use common chain transmission since common chain be all can be crooked to two directions, though but transmission can not bear certain strength support window and be parked in a certain position.

Summary of the invention

The purpose of this utility model provides a kind of chain, and it can be worked as chain and be pushed and can play a supportive role not to the other direction bending when straight.

The utility model is realized with following technological scheme: a kind of chain, and it is formed by connecting by rivet by some chain sheets; It is characterized in that the chain sheet is an arc, have above the arc one with arc chain sheet disjunctor and to crooked on one side linear projection; Have 2 holes on each chain sheet, rivet shaft is stepped, matches with the diameter of rivet shaft thicker part position in the aperture on the back chain sheet, matches with the diameter at the thin position of rivet front end in the aperture on the preceding chain sheet; Chain sheet and the linear projection on the chain sheet of back are touched just and are made the chain can not be to the other direction bending before chain is unfolded when being straightened condition, is adjacent.

Owing to adopted said structure, chain can be to a direction bending, so can play gearing; Projection when being straightened on the chain sheet collide connect for strip always makes bar of the similar one-tenth of whole chain can not be to the other direction bending, and can bear certain horizontal strength and not crooked, from playing a supporting role.

The beneficial effects of the utility model are: simple in structure, easy to use, enlarged the function of use of chain.

Description of drawings

Below in conjunction with drawings and Examples the utility model is described in further detail:

Fig. 1 is the stretching status architecture schematic representation of the utility model;

Fig. 2 is a chain sheet plan view;

Fig. 3 is a chain sheet left view;

Fig. 4 is the rivet arrangement schematic representation;

Fig. 5 is two adjacent bidirection chain sheet connection diagrams;

Fig. 6 is that two adjacent bidirection chain sheets connect cut-away view;

Fig. 7 is that chain and sprocket wheel are used phase diagram.

Among the figure: 1, preceding chain sheet, 2, back chain sheet, 3, the chain head, 4, the chain tail, 5, rivet, 6, sprocket wheel.

Embodiment

With reference to Fig. 1, chain is formed by connecting with rivet by preceding chain sheet (1) and back chain sheet (2).

With reference to Fig. 2, Fig. 3, the chain sheet is an arc, has 2 holes that are used to wear rivet on the chain sheet, on arc chain sheet, have one with chain sheet disjunctor and to crooked on one side linear projection; With reference to Fig. 4, rivet shaft is stepped; With reference to Fig. 5 and Fig. 6, preceding chain sheet (1) is corresponding in the other direction with back chain sheet (2), with rivet (5) riveted joint and can rotate around rivet, the hole on the preceding chain sheet (1) is greater than the hole on the back chain sheet (2), and the size in the hole on two chain sheets is corresponding with the multidiameter shaft on the rivet respectively.When said structure was straightened when chain, the projection on the chain sheet was just bumped and is connected into a strip, made chain bending round about, thereby played a supportive role.With reference to Fig. 7, when chain and sprocket wheel (6) are engaged in when using on the window opener, at the two ends of chain returning apparatus chain head (3) and chain tail (4).Chain head (3) is connected with fixed block on the sash, and the chain tail is fixed and the other end, and chain is pushed straight window and opens when clockwise rotating under the effect of sprocket wheel (6) at power; When sprocket wheel (6) rotated counterclockwise under dynamic action, chain was pulled window and cuts out.

Claims

1, a kind of chain, it is formed by connecting by rivet by some chain sheets; It is characterized in that the chain sheet is an arc, have above the arc one with arc chain sheet disjunctor and to crooked on one side linear projection; Have 2 holes on each chain sheet, rivet shaft is stepped, matches with the diameter of rivet shaft thicker part position in the aperture on the back chain sheet, matches with the diameter at the thin position of rivet front end in the aperture on the preceding chain sheet; Chain sheet and the linear projection on the chain sheet of back are touched just and are made the chain can not be to the other direction bending before chain is unfolded when being straightened condition, is adjacent.