CN2446272Y

CN2446272Y - Spring regulator of shutter

Info

Publication number: CN2446272Y
Application number: CN 00249079
Authority: CN
Inventors: 朱江铭
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-09-04
Filing date: 2000-09-04
Publication date: 2001-09-05
Anticipated expiration: 2010-09-04

Abstract

The utility model relates to a regulating device of a curtain rolling spring. A first spring sheathing head arranged in a curtain rolling shaft is sheathed with one end of a solid shaft, a rotating shaft of a gear is fixedly connected with the first spring sheathing head and the solid shaft, a second spring sheathing head is sheathed with the other end of the solid shaft, and a spline is arranged outside the second spring sheathing head and is matched with a spline groove arranged in the inner hole of the curtain rolling shaft. Springs are sheathed with the first spring sheathing head and the second spring sheathing head, an original gear press plate is omitted, the axial length of the curtain rolling mechanism is shortened, the springs can freely stretch, the range of the elasticity variation is large, and the utility model can overcome the defect of the original assembly difficulty.

Description

The roller shutter spring regulating device

The utility model is the spring regulating device in a kind of structure of rolling of Shutter screen door window.

The structure of rolling of Shutter screen door window is to have prestressed spring to drive hollow curtain rolling shaft with one to rotate stretching, extension and the contraction that realizes the yarn curtain, and the prestressing force of spring is regulated setting by a gear, and general common structure is: have solid shafting and gear affixed in the hollow curtain rolling shaft; One end of spring and the free end of solid shafting are affixed, and the other end and curtain rolling shaft are affixed, after swing pinion is adjusted the prestressing force of spring, lock gear, this moment, the yarn curtain was contracted on the curtain rolling shaft, treat that whole structure of rolling is installed to doorframe and window frame after, can spur the yarn curtain and stretch, decontrol the yarn curtain and can shrink automatically.But this structure, when adjusting spring prestressing force, the length of spring remains unchanged, and the pitch of the laps diameter of spring on solid shafting can change with prestressed variation.Its shortcoming is: one, and gear easily skids off from the enclosure vertically, must be pressed in the end face of gear with pressing plate, makes the axial length of structure of rolling be difficult to shorten; Its two, spring length is fixed, in the process that stretches with the pulled down yarn curtain, spring can only be expanded and tighten up diametrically, not only the elasticity excursion little, influence spring life, and assembly quality can not guarantee.

The purpose of this utility model is to provide a kind of roller shutter spring regulating device, adopts the spring housing header structure, makes gear spacing on the one hand, saves the gear pressing plate, shortens the axial length of structure of rolling; Make spring that retractable under the prestressed state is being arranged on the other hand, enlarge the elasticity excursion of spring; Can also improve assembly quality.

The technical solution of the utility model is: a kind of roller shutter spring regulating device, comprise cover, and the two ends of cover are respectively equipped with first enclosure, second enclosure, and an end of first enclosure holds gear and gear locking plate; First enclosure, second enclosure have axle sleeve of protruding each suit of axle respectively, and hollow curtain rolling shaft is set in diaxon and puts, and the curtain rolling shaft endoporus has the outer spline of spline and two axle sleeves to match; Be provided with solid shafting and spring in the curtain rolling shaft; It is characterized in that: have one first spring housing headgear to be contained in an end of solid shafting in the curtain rolling shaft, the protruding axle of first enclosure is passed in protrusion one rotating shaft of gear central authorities and first spring is pullover, solid shafting is affixed, one second spring housing headgear is contained in the other end of solid shafting, there is spline to match outside second spring is pullover with the spline of curtain rolling shaft endoporus, described spring housing is contained in that first spring is pullover, second spring pullover on, the two ends of spring are pullover with first spring respectively, second spring is pullover affixed.

Be further described below in conjunction with embodiment of the present utility model and accompanying drawing thereof.

Accompanying drawing is the structural representation of the utility model embodiment.

A kind of as shown in drawings roller shutter spring regulating device comprises cover 7, and the end that the two ends of cover 7 are respectively equipped with first enclosure 2, second enclosure, 12, the first enclosures 2 holds gear 4 and gear locking plate 41; By cover 7,

first enclosure

2,12 combinations of second enclosure, and multiple with a lid 1 in the outer end of first enclosure 2, constitute the shell of roller shutter spring regulating device; First enclosure 2, second enclosure 12 have axle sleeve of protruding axle 21,121 each suit 3,11 respectively, hollow curtain rolling shaft 6 is set on two axle sleeves 3,11, curtain rolling shaft 6 endoporus have spline to match (spline belongs to known technology with cooperating of spline, so not shown in the figures) with two axle sleeves 3,11 spline outward; Be provided with solid shafting 8 and spring 9 in the curtain rolling shaft 6; It is characterized in that: have one first spring pullover 5 to be sleeved on an end of solid shafting 8 in the curtain rolling shaft 6, pullover 5, the solid shafting 8 affixed (can adopt common interference fit) of protruding axle 21 and first spring that a rotating shaft 42 passes first enclosure 2 is protruded in gear 4 central authorities, and gear 4 is spacing and can not skid off vertically by first spring pullover 5; One second spring pullover 10 is sleeved on the other end of solid shafting 8, second spring pullover 10 is outer to have spline to match with the spline of curtain rolling shaft 6 endoporus, and be guide rod axially move back and forth also along curtain rolling shaft 6 endoporus second spring pullover 10 can serve as spool with curtain rolling shaft 6 rotations with solid shafting 8 with solid shafting 8; Described spring 9 is sleeved on pullover 5, second spring pullover 10 of first spring, and the two ends of spring 9 are affixed with pullover 5, second spring pullover 10 of first spring respectively.

After above-mentioned roller shutter spring regulating device installation is appropriate, adjust spring prestressing force earlier.Open and cover 1, swing pinion 4, protruding axle 21, first spring of rotating shaft 42, first enclosure 2 is pullover 5, solid shafting 8, spring 9 are followed rotation simultaneously; Second spring pullover 10 can drive under the twisting force of spring 9 curtain rolling shaft 6 rotate until the yarn curtain is shunk volume to the highest spacing after, second spring is pullover 10, curtain rolling shaft 6 stops operating; Along with spring 9 prestressing force continue to strengthen, the pitch of the laps of spring 9 increases, contraction in length, and second spring pullover 10 moves axially along curtain rolling shaft 6 endoporus, when spring 9 prestressing force reach predetermined value, and lock gear, adjustment finishes, and closes to cover 1.Spur the yarn curtain this moment again, under effect, realize stretching and shrinking at spring 9.

Advantage of the present utility model is: gear 4 is spacing and can not skid off vertically by first spring pullover 5, saves original gear pressing plate, has shortened the axial length of structure of rolling; Second spring pullover 10 can axially move back and forth along curtain rolling shaft 6 endoporus, and spring 9 is having retractable under the prestressed state, enlarges the elasticity excursion of spring; Can also overcome the difficulty of original spring and solid shafting assembling.

Claims

A kind of roller shutter spring regulating device comprises cover, and the two ends of cover are respectively equipped with first enclosure, second enclosure, and an end of first enclosure holds gear and gear locking plate; First enclosure, second enclosure have axle sleeve of protruding each suit of axle respectively, and hollow curtain rolling shaft is set in diaxon and puts, and the curtain rolling shaft endoporus has the outer spline of spline and two axle sleeves to match; Be provided with solid shafting and spring in the curtain rolling shaft; It is characterized in that: have one first spring housing headgear to be contained in an end of solid shafting in the curtain rolling shaft, the protruding axle of first enclosure is passed in protrusion one rotating shaft of gear central authorities and first spring is pullover, solid shafting is affixed, one second spring housing headgear is contained in the other end of solid shafting, there is spline to match outside second spring is pullover with the spline of curtain rolling shaft endoporus, described spring housing is contained in that first spring is pullover, second spring pullover on, the two ends of spring are pullover with first spring respectively, second spring is pullover affixed.