CN201037368Y

CN201037368Y - Back rush positioning resistance device for roller shutter type screen window

Info

Publication number: CN201037368Y
Application number: CNU2007200000079U
Authority: CN
Inventors: 刘忠法
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-11-14
Filing date: 2007-01-04
Publication date: 2008-03-19
Anticipated expiration: 2017-01-04

Abstract

The utility model discloses a device which can cause the straining beam to elevate gradually through the resistance generated by a straining beam rolling back to an ideal place when a rolling type window screen or curtain rolls back. The device is simple in structure, durable, convenient to use, economical and practical, and solves the problem that when the window screen or the curtain rolls back, the speed is over fast or over slow, and is a very ideal resistance device.

Description

Backrush location drag devices during a kind of rolling curtain type screen window backrush

Technical field

The utility model relates to a kind of rolling curtain type screen window or rolling curtain can pass through this device when backrush, allow its backrush to desirable position, produce a kind of device that resistance slowly rises the screen window straining beam, especially relate to a kind of rolling curtain type screen window when backrush, can backrush to desirable position, produce a kind of device that resistance slowly rises straining beam.

Background technology

Existing rolling curtain type screen window, curtain mostly are direct backrush type, because all there is spring the pipe crimping inside of rolling curtain type screen window, curtain, and strength is not little; when backrush, strength all can be very big, when causing the straining beam backrush to the yarn box like this; can produce very big noise, frighten the client through regular meeting.There is minority manufacturer to invent a kind of backrush drag devices over the last two years, this device is when receipts get on, can produce a kind of resistance, when it was received up, it is very slow that speed becomes, but this device has a lot of disadvantages, first, speed when causing regaining is too slow, allows very much the client worry and also allows installation personnel worry, the influence debugging; The second, owing to used a kind of lubricated resistance fat in the drag devices, this lubricated resistance fat will vapor away in have more than is needed several years, can allow it lose due effect like this; The 3rd, because structure is relatively complicated, can causes like this than being easier to and damage.

Summary of the invention

The purpose of this utility model is to provide a kind of rolling curtain type screen window or curtain can backrush just produce the device that resistance slowly rises the screen window straining beam to desirable position when backrush.This apparatus structure is simple, and is durable, easy to use, and can be provided with according to user's needs, is a kind of very practical, durable, a kind of device that cost is cheap again.

It mainly is made up of the utility model the nut and the spring of band silk mouth the screw rod of being with screw-socket and inboard.It is with an end of the screw rod of screw-socket to link to each other with the central axis that the outer cover plug joins in use.Spring abuts against on the central axis, when nut is screwed near spring, several circles of can screwing in the spring as required, at this moment the protruding parallel clamp mouth part of putting into pipe crimping on the nut, at this moment when rolling curtain type screen window when pulling down, pipe crimping will drive nut and rotate, and nut is taken to another direction of the screw rod of screw-socket, and at this moment it causes resistance can for whole screen window.Owing in the screen window big spring is arranged, reclaim when screen window is past, straining beam makes progress the time receiving, pipe crimping will rotate towards direction opposite when pulling down, and will drive nut like this, and nut will turn to the spring place, at this moment because spring is flexible, can produce resistance, the velocity of rotation of spool will slow down, till being rolled onto straining beam and getting back to screen covering.If the outer cover plug is an adjustable type, position by all right adjusting nut of the regulating system on the outer cover plug, can be transferred to the optional position to nut as required, transfer, straining beam can be transferred to the client and want to allow its backrush produce again to the desirable position on the position that resistance slowly rises while trying.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 be in the utility model use with the cooperation position figure of other object.

The specific embodiment

As shown in Figure 1, the yarn box of general common rolling curtain type screen window is by screen covering 14, screen covering plug 8, bearing 7, the central axis 6 that the screen covering plug joins, end cap of the spring 10, big spring 9, spool 5, gauze 11, straining beam 12, shake hands 13 to form, after their combinations, when receipts get on, big spring strength hour can be received to be got on very much, can cause very big sound when spring strength is too big, make the people frightened easily, this utility model is at central axis 6 places that the screen covering plug joins, connect the screw rod 1 of a band screw-socket, interface all is the silk mouth, can control a length of notch portion screw rod as required, on the screw rod 1 of band screw-socket, put into a little spring, on screw rod 1, twist the nut 2 of an inboard band silk mouthful, have many protrudingly 3 on the outer end of this nut, conveniently match with the clamp mouth part 16 of pipe crimping 5.As screen window, people wish that gauze can be regained not produce noise when going.Want to reach this function, only need the nut 2 of band silk mouthful is screwed to when being close to spring, can twist several circles again in spring as required, what at this moment this device that will assemble was parallel is pushed in the pipe crimping, allows projection 3 places of nut be clipped in clamp mouth part 16 interior getting final product in the pipe crimping 5.When using, the straining beam 13 of leaving behind drives gauze 12, when gauze 12 drives pipe crimping 5, pipe crimping 5 will drive the nut 2 that there is silk mouthful the inboard, and nut 2 will be along screw rod around going to the other end, and at this moment it does not exert an influence to screen window, when straining beam 13 withdrawals are gone, same nut 2 can be along screw rod 1 around to the spring place, runs into the resistance of spring 4 and slowly rises, in straining beam 13 is got back to screen covering 14.If on the screen covering plug 8 adjustable function is arranged, it can control the central axis rotation that the screen covering plug links to each other, thus the position of adjusting nut 2, as required, can be transferred to the optional position to nut, transfer, until allowing the straining beam backrush to client's the ideal position more slowly till the backrush while trying.

Claims

1. rolling curtain type screen window or curtain backrush location drag devices when backrush, it is characterized in that: it is by the screw rod (1) of band screw-socket, there is the nut (2) of silk mouth the inboard, nut outer end projection (3), spring (4) are formed, described inboard has the nut (2) of silk mouth to be screwed on the screw rod (1) of band screw-socket, can be screwed on the certain location as required.

2. a kind of rolling curtain type screen window according to claim 1 or curtain be backrush location drag devices when backrush, it is characterized in that: nut (2) has spring (4) with the centre of central axis, the inboard has the outer end of the nut (2) of silk mouth to also have projection (3), nut outer end projection (3) is connected with clamp mouth part (16) on the pipe crimping (5), and can be movable in clamp mouth part (16).

3. a kind of rolling curtain type screen window according to claim 1 or curtain be backrush location drag devices when backrush, it is characterized in that; One end of the screw rod (1) of band screw-socket has and can join with the central axis (6) that the screen covering plug joins.