CN2604501Y

CN2604501Y - Synchronous rolling cord unit for window shutter without exposed stay cord

Info

Publication number: CN2604501Y
Application number: CN 03202272
Authority: CN
Inventors: 黄太郎
Original assignee: Lifang Enterprise Co ltd
Current assignee: Lifang Enterprise Co ltd
Priority date: 2003-01-30
Filing date: 2003-01-30
Publication date: 2004-02-25
Anticipated expiration: 2013-01-30

Abstract

The utility model relates to a synchronous cord rolling unit for a shutter window without an exposed stay cord, which comprises a box body, a driving wheel group arranged in the box body and two roller groups which are arranged in the box body and are positioned on both opposite sides of the driving wheel group, wherein the driving wheel group is provided with a driving wheel and a spiral spring which is reversely rolled on the driving wheel, one end of the spiral spring is fixedly arranged on the box body, and the other end in the opposite direction is fixedly arranged on the driving wheel. The roller groups are respectively provided with a roller which forms engagement driving with the driving wheel and at least a stay cord which is wound on the roller, and thus, the driving wheel group and the roller groups are mutually matched to equally roll and release a shutter window.

Description

There is not the synchronous serving unit that exposes the stay cord shutter

(1) technical field

The utility model relates to a kind of louver members, and the nothing that particularly relates to a kind of simple structure and processing ease exposes the synchronous serving unit of stay cord shutter.

(2) background technology

The stay cord of early stage shutter is to expose to the open air at the curtain side, and have equivalent length, thus infant in playing or pet are wound and unfortunate event takes place, therefore, promptly have the dealer to develop and do not have the shutter that exposes stay cord, United States Patent (USP) as shown in Figure 1 is an example No. 6289965.

This nothing expose stay cord shutter 100 include one put the beams in place 1, one underbeam 2, several are arranged on the blades 3 of 1,2 on this upper and lower beam and the spring motor 4 of these blade 3 folding and unfoldings of control.Cooperate and consult Fig. 2, this spring motor 4 has a housing 401, a driving wheel 402, an idle pulley 403, a storage receipts wheel 404, one scroll spring 405, a first volume rope sheave 406, one second bull wheel 407, one first stay cord 408 and one second stay cord 409.This driving wheel 402 is hubbed in this housing 401 rotationally.This idle pulley 403 also is hubbed on the transmission that is meshed in this housing 401 and with this driving wheel 402 rotationally.Wheel 404 coaxial rotationally being nested with on this idle pulley 403 are received in this storage.This scroll spring 405 is handled through precompressed, receive on the wheel 404 in being wound on this storage under the nature, and these scroll spring 405 1 ends are installed in this storage and receive on the wheel 404, the reverse other end then warp is fixed on this driving wheel 402, and make this storage receive wheel 404 can with these driving wheel 402 interlocks, promptly should storage receive that wheel 404 is responsible for supplying with or this scroll spring 405 is received in storage, but because of winding diameter is changing always, institute so that should the storage receipts take turns 404 rotating speed and the rotating speed of this driving wheel 402 unequal.This first volume rope sheave 406 is hubbed on nearly end places in this housing 401 rotationally, and the transmission that is meshed with this driving wheel 402.This second bull wheel 407 also is hubbed on nearly other end places in this housing 401 rotationally, and the transmission that is meshed with this idle pulley 403.This first stay cord 408 can be wound on this first volume rope sheave 406, and these first stay cord, 408 1 ends are installed in this first volume rope sheave 406, reverse then stretch through out this housing 401 and extend and pass a side of this upper beam 1, this blade 3 and this underbeam 2 in regular turn of the other end, and be cemented on this underbeam 2.This second stay cord 409 can be wound on this second bull wheel 407, and these second stay cord, 409 1 ends are installed in this second bull wheel 407, reverse then stretch through out this housing 401 and extend and pass the opposite side of this upper beam 1, this blade 3 and this underbeam 2 in regular turn of the other end, and be cemented on this underbeam 2.

The operation principles of this shutter 100 for this spring motor 4 provide this first, two stay cords 408,409 strength that upwards furl, the gross weight that this underbeam 2 and accumulation are stacked on these underbeam 2 blades 3 then with this first, two stay cords 408,409 pull down, when both balance of powers, just can make this underbeam 2 be parked in arbitrary height, again because downward gross weight relates to the blade amount that accumulation is piled up, but not definite value, so industry use usually variable force spring (variable force spring) or etc. power spring (constant force spring) add that friction adjustment device (friction adjuster) obtains balance of power, when desire change blade exhibition receipts are spent, as long as upwards promote or spur this underbeam 2 downwards, get final product destruction of balance, reorientate, and this spring motor 4 utilizes this first volume rope sheave 406, driving wheel 402, idle pulley 403 and second bull wheel, 407 4 Synchronous Transmission relation, no matter whether the point of application is positioned at this underbeam centre, all can make this first, two bull wheels 406,407 synchronous scrollings can not tilt underbeam 2 and blade 3.

Though, above-mentioned shutter 100 can reach really not have by this spring motor 4 and expose stay cord, and the purpose that when operation, does not tilt, but should store the variable speed relation of receiving wheel 404 and driving wheel 402, and this first volume rope sheave 406, driving wheel 402, idle pulley 403, second bull wheel 407 4 be the constant speed relation again, receives wheel 404 and idle pulley 403 separates starts and need should store, so that overall structure complexity too, five wheel bodys are arranged altogether, also take the space in this upper beam 1.

(3) utility model content

The purpose of this utility model is to provide a kind of structure to simplify, and the nothing of volume-diminished exposes the synchronous serving unit of stay cord shutter.

The utility model does not have the synchronous serving unit that exposes the stay cord shutter and includes a box body, and drive wheels and two and furl wheels.This box body inside has an accommodation space.These driving wheels are arranged on this accommodation space central authorities, and include the scroll spring that a rotating driving wheel and a warp are provided with, this driving wheel has a rotating shaft and and is installed in driving fluted disc in this rotating shaft, and this rotating shaft axially offers a groove, outboard end behind this scroll spring warp is installed on this box body again, and oppositely medial extremity then plugs in the groove that is positioned at this driving wheel rotating shaft.This furls wheels and is positioned at this driving wheels two opposite sides place, and this furl wheels respectively have one furl the wheel and at least one stay cord, this furls wheel and is hubbed on rotationally in this accommodation space, and at outer peripheral face radial shape Cheng Youyi transmission fluted disc and at least one storage tank, the transmission that is meshed with the driving fluted disc of this driving wheel of this transmission fluted disc, and each storage tank is just ccontaining for each stay cord back of reeling, and an end of each stay cord is fixed on this and furls on the wheel again, the opposite other end this box body that then stretches through out.

(4) description of drawings

Below by most preferred embodiment and accompanying drawing the synchronous serving unit that the utility model exposes the stay cord shutter is elaborated, in the accompanying drawing:

Fig. 1 is the general floor map that exposes the stay cord shutter of not having.

Fig. 2 is the generalized section of a spring motor in the above-mentioned shutter.

Fig. 3 is the exploded perspective view of the utility model first preferred embodiment.

Fig. 4 is the assembled sectional view of above-mentioned first preferred embodiment of the utility model.

Fig. 5 is the action schematic diagram of above-mentioned first preferred embodiment of the utility model, the state when two stay cords that this synchronous serving unit is described do not stretch.

Fig. 6 is the action schematic diagram of above-mentioned first preferred embodiment of the utility model, and the state when this two stay cord stretches is described.

Fig. 7 is the exploded perspective view of the utility model second preferred embodiment.

Combination top view when Fig. 8 is the unassembled last lid of above-mentioned second preferred embodiment of the utility model.

(5) specific embodiment

Before proposing detailed description, be noted that in the following description identical or similar elements is to adopt identical numbering to represent.As shown in Figure 3, Figure 4, first preferred embodiment that nothing of the present utility model exposes the synchronous serving unit 5 of stay cord shutter includes a box body 10, driving wheels 20, two

furl wheels

30,40, a lid 50 and two friction adjustment assemblies 60,70, and this synchronous serving unit 5 is in order to replace spring motor 4 as shown in Figure 1.

This box body 10 is unidirectional opening up, its inside has an accommodation space 11 and two

cylinders

12,13, these accommodation space 11 belows are formed with three accommodation chambers 111,112,113 arranged side by side, and this

cylinder

12,13 vertically is erected at both sides accommodation chamber 111,113 centre respectively, vertically offer on this box body 10 again two symmetrical and to should in the middle of the locating slot 14 of accommodation chamber 112.

These driving wheels 20 are arranged in the central accommodation chamber 112 of this box body 10, and include the scroll spring 22 that a rotating driving wheel 21 and a warp are provided with, this driving wheel 21 has a rotating shaft 211 and and drives fluted disc 212, the cylinder 12 of these rotating shaft 211 parallel these

box bodys

10,13, and axially offer a groove 213, and this driving fluted disc 212 is installed in this rotating shaft 211 and protrudes out this accommodation chamber 112, these scroll spring 22 warps are arranged in this accommodation chamber 112 again, and the outboard end 221 behind these scroll spring 22 warps plugs and is positioned in these box body 10 locating slots 14, and a reverse medial extremity 222 then wears in the groove 213 that is positioned at these driving wheel 21 rotating shafts 211.

This

furls wheels

30,40 are arranged at the accommodation chamber 111 at these driving wheels 20 two opposite sides places, in 113, and this

furls wheels

30,40 respectively have a furling wheel 31 (41) and that is set in rotationally on these box body 10 cylinders 12 (13) is wound on this and furls the stay cord 32 (42) of wheel on 31 (41), this furls wheel 31 (41) outer peripheral faces and radially is formed with the storage tank 312 (412) that a transmission fluted disc 311 (411) and that protrudes out this accommodation chamber 111 (113) is positioned at this accommodation chamber 111 (113), the transmission that is meshed with the driving fluted disc 212 of this driving wheel 21 of this transmission fluted disc 311 (411), and this storage tank 312 (412) is ccontaining after just supplying this stay cord 32 (42) to reel, these stay cord 32 (42) one ends are fixed on this and furl on the wheel 31 (41) again, the opposite other end this box body 10 that then stretches through out.

This lid 50 just cover covers this box body 10 tops, and locks mutually with this box body 10 by several bolts 51, to seal this accommodation space 11, prevents that these driving wheels 20 and this from

furling wheels

30,40 and deviating from.

This

friction adjustment assembly

60,70 is installed on these box body 10 opposite two ends, and respectively be pivoted with three and be the

friction pulley

61,62,63 (71,72,73) that product word shape distributes, wear and walk around for passing stay cord 32 (42) behind this box body 10, so that this stay cord 32 (42) appropriate resistances to be provided.

Consult Fig. 5, by above-mentioned member, because these scroll spring 22 warps are arranged in this accommodation chamber 112, so this scroll spring 22 can be compeled support on box body 10 walls that constitute this accommodation chamber 112 outward under nature, and when this scroll spring 22 in the raw the time, this stay cord the 32, the 42nd, reeling as much as possible is collected in this storage tank 312,412 that

furls wheel

31,41, and makes these 32,42 blade of louver window that wore of stay cord (not shown) be complete collapse state.

Consult Fig. 6, when drop-down shutter underbeam (not shown), blade of louver window is transferred when launching, this stay

cord

32,42 pulled out and deviate from gradually this furl the

wheel

31,41, furl wheel 31 to drive this, 41 rotate, at this moment, because this

furls wheel

31,41 with these driving wheel 21 engaged transmission, so not only can make this driving wheel 21 rotate, and drive this scroll spring 22 toward interior contraction, to accumulate restoring force, and can make this

furl wheel

31,41 are synchronous rotation, even and if this drop-down strength off-centre is exerted all one's strength, cause this two stay

cord

32,42 unbalance stress, this

furls wheels

30,40 rope stretching length still can be identical, makes this blade of louver window can keep level and transfer and launch and do not tilt.

On the contrary, when on push away the shutter underbeam, when blade of louver window is up folded, the leaf weight that the power that pushes away on being somebody's turn to do can be offseted the shutter underbeam and be supported, make this scroll spring 22 produce reply, and then drive this driving wheel 21 and rotate based on the restoring force of itself, and simultaneously engaged transmission this

furl wheel

31,41, furling this stay

cord

32,42 synchronously, upwards fold and do not tilt and make blade of louver window can keep level.

In addition, because this stay

cord

32,42 under the state that external force does not apply, the power that it bore is the restoring force that underbeam adds formed lower pulling force of leaf weight and scroll spring 22, make shutter when folding fully, its lower pulling force maximum (because of the power of being born adds all leaf weights for underbeam weight), the restoring force minimum, and the expansion that hangs easily, on the contrary, when shutter launches fully, its lower pulling force minimum (because of having only underbeam weight), restoring force maximum, and up fold easily, therefore, this friction adjustment assembly 60 is set, 70, can appropriateness provide this

stay cord

32,42 resistances, make shutter when folding and unfolding, can pause at any time on arbitrary height, and can when external force removes, not hang easily or fold.

As Fig. 7, Figure 8 shows that second preferred embodiment of the present utility model, it includes a box body 10, driving wheels 20, two

furl wheels

30,40, a lid 50 and a unidirectional friction component 80, and this member is roughly identical with this first preferred embodiment, and main difference be in:

This

furls wheels

30,40 respectively has one and furls wheel 31 (41) and two and be wound on this and furl the stay cord 32,33 (42,43) of wheel on 31 (41), and this furls wheel 31 (41) outer peripheral faces and radially is formed with the storage tank 312,313 (412,413) that a transmission fluted disc 311 (411) and two is divided into these transmission fluted disc 311 (411) upper and lower sides, and this storage tank 312,313 (412,413) is ccontaining after supplying this stay cord 32,33 (42,43) to reel just respectively.

This unidirectional friction component 80 is installed on these driving wheels 20, and include a fixed frame 81, one fitting 82, one couple axle 83 and a ring-spring 84, this fixed frame 81 outsides week is rectangular motionless with installing fixing location in this box body 10, inside then is a step circular hole 811, and this fitting 82 is installed in this step circular hole 811, and have a hollow ring 821 and a disymmetrical shell fragment 822, this shell fragment 822 is circular-arc, its central part protrudes out toward in and is installed in this hollow ring 821 outer peripheral faces, and the hole wall of these these fixed frame 81 step circular holes 811 of shell fragment 822 outside butts, this couple axle 83 is installed in driving fluted disc 212 tops of this driving wheel 21 again, and stretch hollow ring 821 inside of inserting this fitting 82, this ring-spring 84 coiling direction from top to bottom is identical with this scroll spring 22 coiling direction from outside to inside in addition, and sheathed being connected on this couple axle 83, and these ring-spring 84 tops are installed on this hollow ring 821.

By above-mentioned member, it is identical with first preferred embodiment, when this scroll spring 22 in the raw the time (this scroll spring 22 is compeled support outward at these accommodation chamber 112 walls), this

stay cord

32,33,42,43 be reel as much as possible be collected in this furl the

wheel

31,41 storage tank 312,313,412, on 413, and make this

stay cord

32,33,42,43 blade of louver window that worn (not shown) are complete collapse state, and when drop-down or on when pushing away shutter, these driving wheels 20 furl wheels 30 with this, 40 interoperation is identical with the operating principle of above-mentioned first preferred embodiment, all can reach and accumulate restoring force when blade of louver window is transferred expansion, on push away when folding the purpose that discharges restoring force.

The effect of this unidirectional friction component 80 then is to provide a frictional resistance, be that blade of louver window and underbeam have the trend of launching at any time downwards because of deadweight, but because this driving wheel 21 rotates this couple axle 83 of meeting interlock, and this ring-spring 84 coiling direction from top to bottom is identical with this scroll spring 22 coiling direction from outside to inside, so this ring-spring 84 can be restrainted this couple axle 83 and rotation thereupon by folder, and drive 82 rotations of this fitting, make the shell fragment 822 of this fitting 82 produce drag with these fixed frame 81 frictions, therefore, in the use, if the application of force does not overcome this drag, then this blade of louver window weight that can't only rely on itself spurs this and

furls wheels

30,40 and transfer expansion, on the contrary, when shutter is desired up to fold blade, this driving wheel 21 can be together with these couple axle 83 backward rotation, at this moment, this couple axle 83 can push away on the contrary and strut this ring-spring 84, and can't drive this ring-spring 84, so this blade of louver window is subjected to the frictional resistance influence of this fitting 82 and fixed frame 81 folding Shi Buhui.

In sum, 22 of scroll springs of the present utility model and these driving wheel 21 interlocks, and integral body only

furls wheels

30,40 cooperation drive blade of louver window folding and unfoldings by these driving wheels 20 and this, so unitary construction is simpler, have only three wheel bodys, volume is also less, in addition, second preferred embodiment of the present utility model is adopted four

stay cords

32,33,42,43 and is cooperated the setting of going up this unidirectional friction component 80, make the utility model be applied on the bigger and heavy shutter, do not have the facts that to load and can't fold fully and take place.

Claims

1. a nothing exposes the synchronous serving unit of stay cord shutter, includes a box body, and drives wheels and two and furl wheels, it is characterized in that:

This box body inside has an accommodation space;

These driving wheels are arranged on this accommodation space central authorities, and include the scroll spring that a rotating driving wheel and a warp are provided with, this driving wheel has a rotating shaft and and is installed in driving fluted disc in this rotating shaft, and this rotating shaft axially offers a groove, outboard end behind this scroll spring warp is installed on this box body again, and oppositely medial extremity then plugs in the groove that is positioned at this driving wheel rotating shaft; And

This furls wheels and is positioned at this driving wheels two opposite sides place, and this furl wheels respectively have one furl the wheel and at least one stay cord, this furls wheel and is hubbed on rotationally in this accommodation space, and radially be formed with a transmission fluted disc and at least one storage tank in outer peripheral face, the transmission that is meshed with the driving fluted disc of this driving wheel of this transmission fluted disc, and each storage tank is just ccontaining for each stay cord back of reeling, and an end of each stay cord is fixed on this and furls on the wheel again, the opposite other end this box body that then stretches through out.

2. nothing as claimed in claim 1 exposes the synchronous serving unit of stay cord shutter, it is characterized in that:

This box body accommodation space is formed with three accommodation chambers arranged side by side, and in this accommodation chamber wherein the accommodation chamber of both sides central authorities each erect a cylinder arranged, just for this furl wheels to furl wheel sheathed, the accommodation chamber of central authorities then drives wheels for this and puts.

3. nothing as claimed in claim 1 exposes the synchronous serving unit of stay cord shutter, it is characterized in that:

This synchronous serving unit also includes a lid, and this lid can cover and cover this box body, to seal this accommodation space, prevents that these driving wheels and this from furling wheels and deviating from.

4. nothing as claimed in claim 1 exposes the synchronous serving unit of stay cord shutter, it is characterized in that:

This synchronous serving unit also includes two friction adjustment assemblies, and this friction adjustment assembly branch is located at the outer opposite both sides of this box body, and respectively is pivoted with three and is the friction pulley that product word shape distributes, and wears for this stay cord that furls wheels and walks around, to provide this stay cord appropriate resistance.

5. nothing as claimed in claim 1 exposes the synchronous serving unit of stay cord shutter, it is characterized in that:

This synchronous serving unit also includes a unidirectional friction component that is installed on these driving wheels, this unidirectional friction component includes a fixed frame, one fitting, one couple axle and a ring-spring, it is motionless that this fixed frame is arranged on the interior location of this box body, and this fitting is installed in this fixed frame, and this fitting inside is hollow form, outer peripheral face then extends the shell fragment of several these fixed frames of butt, this couple axle is installed on this drive wheel fluted disc again, and stretch and insert this fitting inside, and this ring-spring coiling direction from top to bottom is identical with this scroll spring coiling direction from outside to inside, and sheathed being connected on this couple axle, and this ring-spring one end is installed on this fitting.