CN202493212U

CN202493212U - Reciprocating type curtain retracting-extending mechanism

Info

Publication number: CN202493212U
Application number: CN2012200315296U
Authority: CN
Inventors: 陈荣强
Original assignee: Taiwan Industrial Fastener Corp
Current assignee: Taiwan Industrial Fastener Corp; Nifco Taiwan Corp
Priority date: 2012-02-01
Filing date: 2012-02-01
Publication date: 2012-10-17
Anticipated expiration: 2022-02-01

Abstract

The utility model relates to a reciprocating type curtain retracting-extending mechanism which comprises a casing, a rope wheel arranged in an accommodation space in the casing and a hand pull module. The reciprocating type curtain retracting-extending mechanism can be downwards pulled through a hand pull rope penetrating through a second opening of the casing, a shaft bracket where a wheel seat of the hand pull module is sleeve can be driven by two shaft holes in pivot connection with the casing to rotate, the wheel seat can be driven to move in two slide rails, a gear at the bottom of the wheel seat can be meshed with a toothed disk at the bottom of the rope wheel and abut against a torsion spring between the shaft bracket and a rotary hook to enable the torsion spring to deform, and the rope wheel is driven to rotate to wind a plurality of driving ropes to enable a shutter to be pulled upwards. When the hand pull rope stops exerting force, the torsion spring returns to push the wheel seat to break away from the rope wheel, the rope wheel is clamped by the rotary hook of the hand pull module to prevent the shutter from falling, and thus the purpose that the reciprocating type curtain retracting-extending mechanism is convenient and simple to operate is achieved.

Description

Reciprocating type curtain jack

Technical field

The utility model provides a kind of reciprocating type curtain jack; Especially refer to that pedestal and wheel seat through pulling module in the shell stay cord of whipping drives; Be engaged in rope sheave or utilize the torsion spring elastic reset; And the turn hook can let rope sheave one-directional rotation or release again, the operation that reaches the shutter pull-up thus, stops or putting down.

Background technology

Build the thing inner space because can't be communicated with the outside, thus generally all be provided with door and window, when letting opening of doors and windows; Room air can be passed to the outside, make indoor comparatively nice and cool not sultry, ventilate more good, in addition; Door and window can let light source irradiation that the outside sun produced to building thing inside again, improves the indoor lighting situation, but with the change of landing pit, season, weather or time; Sometimes the light source in the outdoor inlet chamber can produce strong, overheated situation, and institute is so that develop curtain, behind top curtain on the door and window; People just can according to various demand, pull-up or put down curtain and adjust light source, simultaneously; Can intercept external sight again after curtain puts down, spy on indoor situation easily to avoid the people on the outside.

Along with the utilization that the curtain quilt is popularized, curtain miscellaneous is gone on the market by manufacturer's research and development, as: traditional cloth formula, shutter, Scroll curtain etc.; No matter but be the curtain of which kind of pattern; It all need be provided with lead agency, utilizes lead agency drive stay cord or pelletron to make and sees also the action that curtain carries out pull-up or puts down shown in Figure 9; Its shutter is for having a plurality of blade A; And a plurality of blade A go up group and are provided with the first ladder rope A1 and the second ladder rope A2, and the first ladder rope A1 and the second ladder rope A2 are the ㄩ shape and are around underbeam B, pass two location traveller C1 that lay respectively at upper beam C both sides, two pulley base C2 again; When the pulling first ladder rope A1 and the second ladder rope A2, just can a plurality of blade A be continued toward top offset up to folding.

Above-mentioned existing shutter still exists many disappearances to remain to be improved when reality is used, as:

The two ends of (1) the first ladder rope A1 or the second ladder rope A2 because of the power of pulling not for the moment, can make a plurality of blade A produce the situation of inclination, pulling once causes using very inconvenient and need put down again again.

(2) because being same as on a plurality of blade A, the pulling length of the first ladder rope A1 and the second ladder rope A2 moves distance; Since different door and window its vary in size just can let shutter size with change; So when the shutter size increased, the length of the first ladder rope A1 and the second ladder rope A2 need be increased to very long, then when in the pulling or after the pulling; Its first ladder rope A1 and the second ladder rope A2 twine easily each other, and be comparatively inconvenient in the use.

Be with, how to solve the problem and the disappearance of existing shutter, be the relevant manufacturer that is engaged in the industry and desire most ardently the direction that research improves and belong to.

Summary of the invention

So; The designer of the utility model is because above-mentioned problem and disappearance; So the collection related data, via assessing in many ways and consider, and to engage in the many years of experience of the industry accumulation; Via constantly studying and revising, the utility model patent that the beginning is designed the reciprocating type curtain jack of this kind is born.

The main purpose of the utility model is; This wheel seat can move with user pulling and on the shell slide rail, lets the fluted disc engagement of gear with rope sheave of wheel seat, let rope sheave along with pull rope down pull action rotate to reel to drive and restrict; Shutter just can with on move; And pull rope and stop to let the gear of wheel seat receive the torsion spring elastic reset to drive the fluted disc that leaves rope sheave, at this moment, the ratchet of rope sheave receives the grab of turn hook to fasten the location; Just can let shutter stop and can not dropping, and then can reach easy to operate simple purpose.

The secondary objective of the utility model is to pull rope when not stressing, and the wind spring of stressed generation elastic deformation just can elastic reset, and drives wheel seat and rotate back to volume by the drop-down rope that pulls, and being user-friendly for repeatedly pulling, and the length that pulls rope can shorten again.

Another purpose of the utility model is; The rope court that pulls in second opening draws away from first opening direction is horizontal; Pulling the wire rope handling portion that rope can push against the turn hook makes the turn of opposite side grab break away from the ratchet of rope sheave; The deadweight of shutter just can natural zone running rope wheel rotation disengage the drive rope, and shutter just can fall and cover door and window, and then can reach purpose simple to operation.

Another purpose of the utility model is; Be provided with friction plate between this protruding axle in rope sheave top and the ratchet; Utilize the fricative resistance of friction plate and shell, but let shutter receive deadweight to drive slow-down when falling, not only can avoid stress damage rope sheave or shutter; Pound in the time of more can avoiding shutter to fall and hurt sb.'s feelings, and then reach the purpose that improves application life and safety.

For reaching above-mentioned purpose, the utility model provides a kind of reciprocating type curtain jack, and it comprises shell, is installed in the rope sheave in this shell and pulls module; Wherein:

This enclosure is formed with receiving space; And this shell upper and lower is penetrated with two pivoted holes that align mutually, two axis holes and two slide rails; And this side wall of outer shell of contiguous these two pivoted holes, two slide rails is penetrated with respectively and lets many of preset shutter drive first opening that rope penetrates and let this presetly pull second opening that rope penetrates, and this receiving space upper inner wall face is between pivoted hole and slide rail and be positioned at this axis hole opposite side and protruded out axostylus axostyle;

This rope sheave upper and lower protrudes out the protruding axle of inserting two pivoted holes of this shell, and this rope sheave lateral wall then is concaved with and supplies many on this preset shutter to drive a plurality of take-up grooves that rope is fixing and reel, and this rope sheave bottom, end face have protruded out fluted disc and ratchet respectively;

This pulls module and comprises pedestal, wheel seat, turn hook and torsion spring; This pedestal has the locating shaft that is hubbed at two axis holes of this shell; The connecting portion that this locating shaft extends extends below the shifting axle that penetrates in two slide rails of this shell more up; Be arranged with on this shifting axle with its slippage and mobile wheel seat in these two slide rails, these wheel seat central authorities are provided with the through hole that supplies this shifting axle to run through thoroughly, and this wheel seat lateral wall is concaved with and supplies the preset accommodating groove that rope is reeled that pulls; This wheel seat bottom convexes with the gear of engagement rope sheave bottom fluted disc behind two slide rail top offsets again; This turn hitcher has the axial region that is articulated in this shell axostylus axostyle, and the support arm that this axial region extends towards this rope sheave upper horizontal protrudes out the grab that blocks in this ratchet, and these torsion spring two ends are held in this pedestal and this turn hook respectively.

Described reciprocating type curtain jack; Wherein, This shell convexes with between this slide rail and this second opening towards this pivoted hole one side limit base, and this limit base has the gag lever post in groove and this groove towards this pivoted hole one side, and this connecting portion end of this pedestal is extended with the pushing and pressing arm; This torsion spring has the location division of inserting in this groove, and extends respectively in these two ends, location division and to be held in supporting end and compressing end of this adjutage and this pushing and pressing arm.

Described reciprocating type curtain jack, wherein, two slide rails of this of this shell are extended below towards a left side by upper right.

Described reciprocating type curtain jack; Wherein, This shell convexes with to extend away from this slide rail one side in this second opening and aligns this second opening and support the guide posts that turns to for preset pulling rope; The axial region of this turn hook then convexes with down to supply to preset towards the horizontally extending adjutage end of this second opening and pulls the wire rope handling portion that rope passes, and the hole of this wire rope handling portion is less than second opening.

Described reciprocating type curtain jack wherein, can further be installed friction plate between the ratchet of this rope sheave and the protruding axle.

Described reciprocating type curtain jack; Wherein, This this pedestal this connecting portion between this locating shaft and this shifting axle that pulls module is extended with the fixing sheet down, and the spatial accommodation central authorities that this wheel seat top is arranged with have protruded out jack-post, and these jack-post central authorities are provided with the through hole that supplies this shifting axle to run through thoroughly; This jack-post cuts open away from this rope sheave one sidewall and is provided with fixing slot, in this spatial accommodation, inserts two ends again and is individually fixed in the wind spring that fixes sheet and fixing slot.

Described reciprocating type curtain jack, wherein, the spatial accommodation central authorities that this wheel seat top that pulls module is arranged with have protruded out jack-post, and are equipped with in the accommodating groove and supply to pull terminal the penetrating to spatial accommodation of rope and form fixing through hole.

Described reciprocating type curtain jack, wherein, this ratchet of this rope sheave has counterclockwise guiding incline and clockwise stop surface.

Description of drawings

Fig. 1 is the stereo appearance figure of the utility model;

Fig. 2 is the three-dimensional exploded view of the utility model;

Fig. 3 is another three-dimensional exploded view of the utility model;

Fig. 4 is the stereo appearance figure of the utility model preferred embodiment;

Fig. 5 pulls the sketch map before the rope for the utility model is drop-down;

Fig. 6 is the drop-down sketch map that pulls in the rope of the utility model;

Sketch map when Fig. 7 decontrols stay cord for the utility model;

Sketch map when Fig. 8 discharges rope sheave for the utility model;

Fig. 9 is the sketch map of prior art.

Description of reference numerals: 1-shell; The 10-receiving space; 101-first housing; 102-second housing; The 11-pivoted hole; 12-first opening; The 13-axis hole; The 14-slide rail; 15-second opening; The 16-axostylus axostyle; The 17-limit base; The 171-groove; The 172-gag lever post; The 18-guide posts; The 2-rope sheave; The protruding axle of 21-; 22-take-up groove; The 23-fluted disc; The 24-ratchet; The 241-guiding incline; The 242-stop surface; The 25-friction plate; 3-pulls module; The 31-pedestal; The 311-locating shaft; The 312-connecting portion; The 313-shifting axle; 314-pushes against arm; 315-fixes sheet; The 32-wheel seat; The 320-spatial accommodation; The 321-jack-post; The 3211-through hole; The 3212-fixing slot; The 322-accommodating groove; The 3221-through hole; The 323-wind spring; The 324-gear; 33-turn hook; The 331-axial region; The 332-support arm; The 333-grab; The 334-adjutage; 335-wire rope handling portion; The 3351-hole; The 34-torsion spring; The 341-location division; 342-supports end; 343-compresses end; The 4-shutter; 41-drives rope; 5-pulls rope; The A-blade; The A1-first ladder rope; The A2-second ladder rope; The B-underbeam; C-puts the beams in place; C1-locatees traveller; The C2-pulley base.

The specific embodiment

For reaching above-mentioned purpose and effect, technological means that the utility model adopted and structure thereof are drawn now and are explained in detail that with regard to the preferred embodiment of the utility model its characteristic and function are following, in order to understanding fully.

See also Fig. 1, Fig. 2, Fig. 3, shown in Figure 4; Be the stereo appearance figure of the stereo appearance figure of the utility model, three-dimensional exploded view, another three-dimensional exploded view, preferred embodiment, find out that by knowing shown in the figure this reciprocating type curtain jack comprises shell 1, is installed in the rope sheave 2 in the shell 1 and pulls module 3; Wherein:

Be formed with receiving space 10 in this shell 1; And shell 1 upper and lower is penetrated with two pivoted holes aligning mutually 11, two axis holes 13 and two slide rails 14; Article two, slide rail 14 is extended below towards a left side by upper right; And shell 1 sidewall of contiguous two pivoted holes 11 is penetrated with and lets many of shutter 4 to drive rope 41 by first opening 12 that penetrates receiving space 10 outward; Shell 1 sidewall of contiguous two slide rails 14 then is penetrated with to let and pulls rope 5 by second opening 15 that penetrates receiving space 10 outward; Receiving space 10 upper inner wall faces are between pivoted hole 11 and slide rail 14 and be positioned at axis hole 13 opposite sides and protruded out axostylus axostyle 16; And between the slide rail 14 and second opening 15, convex with the limit base 17 towards pivoted hole 11 1 side tool grooves 171, shell 1 also convexes with gag lever post 172 in groove 171, and shell 1 convexes with to extend away from slide rail 14 1 sides again in second opening 15 and aligns second opening, 15 central authorities and 5 support the guide posts 18 that turns to for pulling rope.

These rope sheave 2 upper and lowers are to protrude out the protruding axle 21 of inserting 1 two pivoted holes 11 of shell; Rope sheave 2 lateral walls then are concaved with and supply more than 4 on shutter to drive a plurality of take-up grooves 22 that rope 41 is fixed and reeled; Rope sheave 2 bottoms then protrude out the fluted disc 23 greater than rope sheave 2 external diameters outwardly; Rope sheave 2 end faces then protrude out less than rope sheave 2 external diameters and have the ratchet 24 of counterclockwise guiding incline 241 and clockwise stop surface 242, can further install friction plate 25 between ratchet 24 and the protruding axle 21.

This pulls module 3 and comprises pedestal 31, wheel seat 32, turn hook 33 and torsion spring 34; Pedestal 31 has the locating shaft 311 that is hubbed at 1 two axis holes 13 of shell; Locating shaft 311 is extended with connecting portion 312 towards shell 1 slide rail 14; Connecting portion 312 extends below the shifting axle 313 that penetrates in 1 two slide rails of shell 14 more up; Connecting portion 312 ends then are extended with pushing and pressing arm 314; And the connecting portion 312 between locating shaft 311 and the shifting axle 313 is extended with down and fixes sheet 315, is arranged with on the shifting axle 313 with its slippage and mobile wheel seat 32 in two slide rails 14, and spatial accommodation 320 central authorities that wheel seat 32 tops are arranged with have protruded out jack-post 321; Jack-post 321 central authorities are provided with the through hole 3211 that supplies shifting axle 313 to run through thoroughly; Jack-post 321 cuts open away from rope sheave 2 one sidewalls and is provided with fixing slot 3212, and wheel seat 32 lateral walls then are concaved with and supply to pull the accommodating groove 322 that rope 5 is reeled, and is equipped with in the accommodating groove 322 to supply to pull rope 5 ends and penetrate fixing through hole 3221 to the spatial accommodation 320; In spatial accommodation 320, insert two ends again and be individually fixed in the wind spring 323 that fixes sheet 315, fixing slot 3212; Wheel seat 32 bottoms convex with gear 324 again, and turn hook 33 has the axial region 331 that is articulated in shell 1 axostylus axostyle 16, and the support arm 332 that axial region 331 extends towards rope sheave 2 upper horizontal protrudes out the grab 333 that blocks in ratchet 24; Axial region 331 then convexes with down towards second opening, 15 horizontally extending adjutage 334 ends and supplies to pull the wire rope handling portion 335 that rope 5 passes; And the hole 3351 of wire rope handling portion 335 is less than second opening 15, and 34 of torsion springs are inserted in the groove 171 between shell 1 limit base 17 and the gag lever post 172 with location division 341, and torsion spring 34 both sides are extended to be held in limit base 17 and to be respectively equipped with in two ends and are held in supporting end 342, compressing end 343 of adjutage 334 and pushing and pressing arm 314 relative inner walls.

See also Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Figure 6; Be the stereo appearance figure of the stereo appearance figure of the utility model, three-dimensional exploded view, another three-dimensional exploded view, preferred embodiment, drop-down sketch map, the drop-down sketch map that pulls in the rope that pulls before the rope; When will be with shutter 4 pull-ups; User's pulling pulls the shifting axle 313 that rope 5 moved down and drove wheel seat 32 and pedestal 31; Locating shaft 311 through pedestal 31 for the axle center turn by the left bottom offset of slide rail 14 upper right courts, and the end 343 that compresses that lets the pushing and pressing arm 314 of pedestal 31 compress torsion spring 34 makes it produce elastic deformation, the gear 324 of wheel seat 32 just can be engaged in the fluted disc 23 of rope sheave 2; Just can continue to move down and drive wheel seat 32 and turn clockwise and let rope sheave 2 be rotated counterclockwise along with pulling rope 5; Wheel seat 32 rotates on shifting axle 313 and can drive wind spring 323 elastic deformations, and since the ratchet 24 of rope sheave 2 when being rotated counterclockwise through guiding incline 241, can promote turn hook 33 grabs 333 and rotation smoothly; Drive rope 41 and just can be wound on the rope sheave 2, let shutter 4 along with driving rope 41 shortenings and being pulled up.

The fluted disc 23 of above-mentioned rope sheave 2 also can be less than rope sheave 2 external diameters, and the gear 324 of wheel seat 32 is then greater than wheel seat 32 external diameters, and the two only needs can be meshing with each other during near rope sheave 2 in wheel seat 32 displacements and gets final product; Ratchet 24 sizes of rope sheave 2 can change; It only need supply the grab 333 of turn hook 33 to fasten and can not touch wheel seat 32 to get final product; And shell 1 except that pivoted hole capable of using 11, axis hole 13 supply that the locating shaft 311 of protruding axle 21, the pedestal 31 of rope sheaves 2 articulates, shell 1 also can be provided with pivoted pole and supply the hollow locating shaft 311 of pedestal 31 of the protruding axle 21 of hollow of rope sheave 2 sheathed, but it only supplies the function of turn after rope sheave 2 and pedestal 31 installings or rotation to get final product; Non-so promptly limit to the claim of the utility model; As utilize other modifications and equivalent structure to change, and all should in like manner be contained in the claim of the utility model, close and give Chen Ming.

See also Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 6, shown in Figure 7; Be the stereo appearance figure of the stereo appearance figure of the utility model, three-dimensional exploded view, another three-dimensional exploded view, preferred embodiment, the drop-down sketch map in the rope, the sketch map when decontroling stay cord of pulling; When user's relieving pulls rope 5 or stops the application of force; Torsion spring 34 just can promote pedestal 31 reverse turns by elastic reset, and the shifting axle 313 of pedestal 31 and wheel seat 32 just can be retracted upper rightly by slide rail 14 left side is the next, let the gear 324 of wheel seat 32 leave the fluted disc 23 of rope sheave 2; Simultaneously; Wind spring 323 also can utilize elastic restoring force drive wheel seat 32 be rotated counterclockwise be not used the person drop-down pull rope 5 backrush, and rope sheave 2 is because break away from wheel seat 32, and rope sheave 2 grab 333 that utilizes the stop surface 242 of ratchet 24 to be held in turn hook 33 again forms and locatees; Just can not discharge so drive rope 41, shutter 4 can stop at the position of institute's pull-up.

Above-mentioned turn hook 33 can be stretched in axial region 331 towards two skew backs has support arm 332 and the adjutage 334 that is reverse V-shaped, and adjutage 334 also can bend again and be parallel shells 1 sidewall and extend to second opening, 15 inboards, because shell 1 inner space is limited; Can let through reverse V-shaped structure design and to pull rope 5 when promoting turn hooks 33 wire rope handling portions 335; Wire rope handling portion 335 anglecs of rotation strengthen, and the function that lets opposite side grab 333 leave the ratchet 24 of rope sheave 2 really gets final product, and pedestal 31 can directly receive the end 343 that compresses of torsion spring 34 to be held in shifting axle 313; Pedestal 31 does not just need to extend pushing and pressing arm 314 in connecting portion 312; Non-so promptly limit to the claim of the utility model, as utilize other modifications and equivalent structure to change the also bent difformity that is of turn hook 33; All should in like manner be contained in the claim of the utility model, close and give Chen Ming.

Possibly have bigger height owing to build the window of thing; But the user is under height and pushing restriction, can come pull-up shutter 4 through the action that pulling repeatedly pulls rope 5 mostly, pulls rope at 5 o'clock so not only can let user's single pull pull the release of rope 5 and decontrol according to above-mentioned action; Shutter 4 can form the location and can not drop once more; And pull rope 5 and can not only can be reached the convenient effect of using by wheel seat 32 backrush again, more can shorten the length that pulls rope 5.

See also Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 7, shown in Figure 8; Be the stereo appearance figure of the stereo appearance figure of the utility model, three-dimensional exploded view, another three-dimensional exploded view, preferred embodiment, the sketch map when decontroling stay cord, the sketch map when discharging rope sheave; And when the user will put down shutter 4; Then the user only needs to pull rope 5 towards away from horizontal the drawing of first opening, 12 directions, the middle position that can be positioned at second opening 15 owing to pull that rope 5 is held in the guide posts 18 of shell 1, and the hole 3351 of turn hook 33 wire rope handling portions 335 is less than second opening 15; Just can push against hole 3351 sidewalls when traversing so pull rope 5; Let the wire rope handling portion 335 be that counterclockwise turn is carried out at the center with axial region 331, the grab 333 of turn hook 33 opposite sides is done counterclockwise turn simultaneously and is left the ratchet 24 of rope sheave 2, and shutter 4 just can utilize the deadweight pulling to drive rope 41; And drive rope sheave 2 and clockwise rotate, let be wound in drive rope 41 on the rope sheave 2 and disengage and make shutter 4 fall to cover door and window.

Above-mentioned guide posts 18 can be the cylinder of shapes such as triangle, rectangle, circle or multiangular; Its confession pulls rope 5 positions that support only need leave second opening, 15 right side walls; Let second opening 15 outside pull rope 5 when traversing, pull rope 5 and form than wide-angle with the position that guide posts 18 supports, its only tool promote turn hook 33 wire rope handling portions 335 and let opposite side grab 333 move enough distances to get final product with the function of the ratchet 24 that leaves rope sheave 2; Non-so promptly limit to the claim of the utility model; As utilize other modifications and equivalent structure to change, and all should in like manner be contained in the claim of the utility model, close and give Chen Ming.

Because shutter 4 can change self size along with the size of door and window; So the weight of shutter 4 also can with change because shutter 4 deadweight is when too big, because the relation of acceleration of gravity may impose on rope sheave 2 excessive strength; The stress that forms can let rope sheave 2 or shutter 4 damage; So be equiped with friction plate 25 between protruding axle 21 in rope sheave 2 tops and the ratchet 24, through the frictional force that friction plate 25 increases between rope sheave 2 and the shell 1, the pulling force that lets shutter 4 deadweights cause weakens; Not only can improve the application life of rope sheave 2 and shutter 4, more can avoid shutter 4 to fall fast and produce and injure user or other people problem by a crashing object.

The reciprocating type curtain jack of above-mentioned the utility model can have following advantage when reality is used, as:

(1) this wheel seat 32 can move with user pulling and on shell 1 slide rail 14, lets the gear 324 of wheel seat 32 be engaged in the fluted disc 23 of rope sheave 2, lets the user is drop-down to pull rope at 5 o'clock, can drive wheel seat 32 and rope sheave 2 and rotate to reel and drive rope 41 and let and move on the shutter 4.

(2) user decontrols when pulling rope 5 or stopping the application of force; The gear 324 of torsion spring 34 elastic resets drive wheel seat 32 leaves the fluted disc 23 of rope sheave 2; And rope sheave 2 utilizes ratchet 24 to fasten in the grab 333 of turn hook 33 again and forms the location, so shutter 4 can stop at the position of institute's pull-up.

(3) deserving the user decontrols when pulling rope 5 or stopping the application of force; Wind spring 323 can utilize elastic restoring force drive wheel seat 32 be rotated counterclockwise be not used the person drop-down pull 5 backrush of restricting; Shutter 4 is packed up in the action that the user can done repeatedly to spur; Not only can reach the convenient effect of using, more can shorten the length that pulls rope 5.

That (four) passes second opening 15 pulls rope 5 towards away from horizontal the drawing of first opening, 12 directions the time; Then pull the wire rope handling portion 335 that rope 5 just can push against turn hook 33; Turn hook 33 can be that the center is carried out counterclockwise turn and let the grab 333 of opposite side leave the ratchet 24 of rope sheave 2 with axial region 331 just; The deadweight of shutter 4 just can drive rope sheave 2 rotations and disengage drive rope 41, and shutter 4 just can fall and cover door and window.

(5) be equiped with friction plate 25 between protruding axle 21 in these rope sheave 2 tops and the ratchet 24; Increase the frictional force between rope sheave 2 and the shell 1 through friction plate 25; Let shutter 4 driven when falling by deadweight; The speed of fall that can slow down not only can be avoided stress damage rope sheave 2 or shutter 4, pounds in the time of more can avoiding shutter 4 to fall and hurts sb.'s feelings.

So the utility model is for being primarily aimed at reciprocating type curtain jack, and can in shell 1, installs rope sheave 2 and pull module 3; Utilization pull reel on the wheel seat 32 of module 3 pull rope 5 drop-down drives, wheel seat 32 just can move engagement rope sheave 2 in slide rail 14 in, rope sheave 2 just can furl drive and restrict 41; Rise to main key protection point to drive shutter 4, and make and pull after rope 5 stops drag, utilize torsion spring 34 resiliency urged wheel seats 32 to reset and leave rope sheave 2; And the ratchet 24 of rope sheave 2 receives turn hook 33 and fastens formation backstop; Shutter 4 just can have the advantage that stops at the present position and can not fall, yet the above is merely the preferred embodiment of the utility model; Non-so promptly limit to the claim of the utility model; So the simple and easy modification and the equivalent structure that use the utility model manual and graphic content to do such as change, and all should in like manner be contained in the claim of the utility model, close and give Chen Ming.

In sum, the above-mentioned reciprocating type curtain jack of the utility model is when using, for reaching its effect and purpose really; So the utility model really is the excellent utility model of a practicality, for meeting the application important document of novel patent, file an application in the whence in accordance with the law; Expect that examining committee grants accurate this case early, ensureing utility model designer's arduous creation, if an ancient unit of weight office examine committee have any check doubtful; The indication of please writing to us without sparing, settled the doing one's utmost of utility model designer cooperates, and the true feeling moral is just.

Claims

1. a reciprocating type curtain jack is characterized in that, comprises shell, is installed in the rope sheave in this shell and pulls module; Wherein:

2. reciprocating type curtain jack as claimed in claim 1; It is characterized in that; This shell convexes with between this slide rail and this second opening towards this pivoted hole one side limit base, and this limit base has the gag lever post in groove and this groove towards this pivoted hole one side, and this connecting portion end of this pedestal is extended with the pushing and pressing arm; This torsion spring has the location division of inserting in this groove, and extends respectively in these two ends, location division and to be held in supporting end and compressing end of this adjutage and this pushing and pressing arm.

3. reciprocating type curtain jack as claimed in claim 2 is characterized in that, two slide rails of this of this shell are extended below towards a left side by upper right.

4. reciprocating type curtain jack as claimed in claim 1; It is characterized in that; This shell convexes with to extend away from this slide rail one side in this second opening and aligns this second opening and support the guide posts that turns to for preset pulling rope; The axial region of this turn hook then convexes with down to supply to preset towards the horizontally extending adjutage end of this second opening and pulls the wire rope handling portion that rope passes, and the hole of this wire rope handling portion is less than second opening.

5. reciprocating type curtain jack as claimed in claim 1 is characterized in that, further installs friction plate between the ratchet of this rope sheave and the protruding axle.

6. reciprocating type curtain jack as claimed in claim 1; It is characterized in that; This this pedestal this connecting portion between this locating shaft and this shifting axle that pulls module is extended with the fixing sheet down, and the spatial accommodation central authorities that this wheel seat top is arranged with have protruded out jack-post, and these jack-post central authorities are provided with the through hole that supplies this shifting axle to run through thoroughly; This jack-post cuts open away from this rope sheave one sidewall and is provided with fixing slot, in this spatial accommodation, inserts two ends again and is individually fixed in the wind spring that fixes sheet and fixing slot.

7. reciprocating type curtain jack as claimed in claim 1; It is characterized in that; The spatial accommodation central authorities that this wheel seat top that pulls module is arranged with have protruded out jack-post, and are equipped with in the accommodating groove and supply to pull terminal the penetrating to spatial accommodation of rope and form fixing through hole.

8. reciprocating type curtain jack as claimed in claim 1 is characterized in that this ratchet of this rope sheave has counterclockwise guiding incline and clockwise stop surface.