CN100487220C - Automatic winding screen device - Google Patents

Abstract

Even when a damper is provided for absorbing impact and collision noise produced during winding a screen in an automatic winding screen device, the resistance during developing the screen is reduced as small as possible, and in the automatic winding screen device having a coil spring fixed to a bracket at one end of a winding box, the other end of the coil spring being fixed to a winding shaft, and the damper for alleviating the impact and collision noise, between the damper on a fixed shaft fixed to the winding box and the winding shaft, a one-way clutch mechanism is interposed in that when the winding shaft is rotated in a direction developing the screen against the rotational urging force of the coil spring, the connection between the damper and the winding shaft is cancelled while when the winding shaft rotates in a direction winding the screen, the damper is connected to the winding shaft.

Description

Automatic winding screen device

Technical field

The present invention relates to be used to prevent dust, the automatic winding screen device of shading, heat insulation and insect protected etc., more particularly, relate to and to be contained in revolution loading force that the helical spring twisting action that furls on the axle produces and to furl as curtain in the window shade arrangement of drive source of usefulness by interior, be provided with and be used to relax the impact that produces when furling and the automatic winding screen device of impact sound by above-mentioned helical spring.

Background technology

Now, a kind of like this roller shutter window device is a well-known, that is, with the curtain window furl to helical spring as the furling on the axle of drive source, and the operation box that switching manipulation is used is installed in the front end of this roller shutter window, automatically furls this curtain thus.

In this automatic winding screen device, owing to be to utilize the helical spring revolution loading force that reverses to furl the curtain volume, therefore, furl when finishing to furl speed big, when the operation box of the front end that is installed in roller shutter window and rolling-up box collision, might produce bigger impact, maybe may send bigger impact sound,, occur be provided with and to be used for suppressing the above-mentioned consideration that furls damper that speed increases etc. (for example: can referring to TOHKEMY 2003-106076 communique) as corresponding countermeasure.

In the damper in this existing window shade arrangement, irrespectively make the turning power that furls axle be passed to this damper at any time with the gyratory directions that furls axle, by the interior one-way clutch mechanism that is contained in this damper, curtain is being furled when furling on the axle, the drag effect that this damper is produced is furling on the axle, furls the occasion that direction that axle trails towards curtain is rotated making by warp, owing to can not produce above-mentioned resistance, therefore, be easy to make roller shutter to trail.

But, because above-mentioned one-way clutch is contained in the damper in being, therefore, even furl the occasion that direction that axial curtain trails is rotated making, also can't avoid some drag effect in stretching operation, for example adopting the occasion of oil damper, can appear as the rubber seal that prevents the leakage of oil in the damper with through the frictional resistance between the axle wherein, so the become problem of some effort of the operation of stretching, extension roller shutter just occurred.

In addition, because above-mentioned damper can make the helical spring power of the furling reduction that is used for furling curtain, furling power and than the occasion of not establishing damper remarkable reduction being arranged of curtain under the state that acts on curtain that for example is subjected to wind etc. furls situation of difficult thereby cause under this occasion.

Summary of the invention

Technical task of the present invention provides a kind of automatic winding screen device, be a kind of curtain to be wrapped in helical spring furling on the axle as drive source, thereby furl the window shade arrangement of above-mentioned curtain automatically, wherein, be provided with and be used for relaxing the impact that produces when furling and the damper of impact sound by above-mentioned curtain, resistance in the time of reducing simultaneously the curtain stretching, extension as much as possible can improve operating characteristics thus.

Another technical task of the present invention provides a kind of automatic winding screen device, and it can be failure to actuate damper till deceleration zero hour of setting arbitrarily, can more effectively play a role thereby be used in the helical spring power of furling that furls curtain.

Another technical task of the present invention provides a kind of automatic winding screen device, and it can regulate above-mentioned deceleration zero hour easily.

Another technical task of the present invention provides a kind of automatic winding screen device, it considers that in the operating process of stretching curtain is in and occurs under the half-open position because of maloperation makes occasion that operation box puts down etc. that the brake force that is not subjected to the restriction of curtain span and above-mentioned damper is produced plays a role.

Be used to solve the automatic winding screen device of the present invention of above-mentioned problem, be a kind of to reverse the revolution loading force that produces furls usefulness as curtain drive source by the interior helical spring that furls in the axle that is contained in the coiling curtain, the operation box that switching manipulation is used is installed in the front end of above-mentioned curtain, thereby the automatic winding screen device of this curtain of switch, it is characterized by, make the above-mentioned axle that furls be supported on the rolling-up box with freely rotating, and, helical spring is fixedly arranged on the support of an end of this rolling-up box, this helical spring other end is installed on and can not be installed on the spring base that furls on the axle pivotally, be fixed in the fixed axis on the support of above-mentioned rolling-up box and furling between the axle, be provided with and make brake force act on the damper that this furls axle, wherein, on the said fixing axle, clamped one-way clutch, by this one-way clutch, furl that axle overcomes above-mentioned helical spring revolution loading force and to the rotating occasion of direction that stretches curtain making, make damper and the disconnection that is connected that furls between the axle, and furling the rotating occasion of direction that axial curtain furls, at least the later stage that furls make damper with furl the axle be connected.

In having the automatic winding screen device of above-mentioned formation, damper on the fixed axis that is fixed on the rolling-up box and furling between the axle, be provided with and when curtain furls, make damper and furl the one-way clutch mechanism that axle is connected, this one-way clutch mechanism makes the revolution that furls axle not pass to damper when curtain stretches, therefore, when stretching operation, this curtain can not be subjected to the effect of the resistance that causes by the friction in the damper etc., resistance when reducing the curtain stretching, extension as much as possible, the occasion that is contained in the one-way clutch mechanism in the damper is compared the operation that can curtain be trailed with existing mechanism.

In above-mentioned automatic winding screen device, as one-way clutch mechanism, be provided with: the clutch disc of damper side, the clutch disc of this damper side are arranged on the fixed axis that is fixed on the above-mentioned rolling-up box via damper; And the clutch disc that furls a side, this furl a side clutch disc can with furl the revolution of a spool one and can slide freely at its axis direction, and intercalation pivotally is on the supporting axis on the clutch disc that is arranged at above-mentioned damper side freely, between two clutch disc, be provided with clutch teeth, this clutch teeth does not mesh the rotating occasion of direction that furls axial curtain stretching, extension, and furl the rotating occasion engagement of direction that axial curtain furls making, and, also be provided with load maintainer, this record mechanism so that the degree of two clutch teeth engagements the clutch disc that furls a side is loaded to the clutch disc of damper side.In this occasion, can constitute one-way clutch mechanism simply.

In addition, as this one-way clutch mechanism, be provided with: the clutch disc of damper side, the clutch disc of this damper side are arranged on the fixed axis that is fixed on the above-mentioned rolling-up box via damper; And the clutch disc that furls a side, this clutch disc that furls a side with furl an one revolution and can slide freely at its axis direction, and be connected with supporting axis on the clutch disc that is arranged on above-mentioned damper side via spiral action mechanism, the structure of above-mentioned spiral action mechanism is, the clutch disc that furls a side is turned round with respect to above-mentioned supporting axis, and, make the rotating occasion of direction that furls axial curtain stretching, extension, follow its revolution, the clutch disc that furls a side is driven to the direction of leaving from the clutch disc of above-mentioned damper side; And furl the rotating occasion of direction that axial curtain furls making, the clutch disc that furls a side then is driven to the direction near the clutch disc of above-mentioned damper side, and, also be provided with clutch teeth on two clutch disc, this clutch teeth can be when the mutual butt of two clutch disc and is intermeshed.

In this occasion, the brake force that damper is produced acts on and furls axle, does not reduce, can bring into play its effect effectively and can not make the curtain that is produced by helical spring furl power till this moment owing to the effect of this brake force.

Above-mentioned spiral action mechanism be arranged at the damper side clutch disc supporting axis and furl the screw thread that screws togather mutually on the clutch disc both sides of a side.But be not limited only to this, for example can also adopt to embed thread groove and embedding protrusions such as pin wherein.

In addition, as preferred implementation of the present invention, set in the following manner and furl the clutch disc of a side and the spiral action mechanism between the supporting axis, promptly, from by till furling axle and furling deceleration zero hour that curtain begins to make until engaging one another by clutch disc the damper action, the above-mentioned clutch disc that furls a side is driven to the direction near the clutch disc of damper side, such idle running district is set on above-mentioned supporting axis, promptly, in the curtain stretching process, when the above-mentioned clutch disc that furls a side surpasses the start scope of this spiral action mechanism, this clutch disc that furls a side is dallied on the spot with respect to supporting axis.Under this occasion, the load maintainer that can load to the spiral action mechanism side the clutch disc that furls a side that is in the idle running district on the supporting axis can be set also.

In addition, can regulate supporting axis with respect to the clutch disc of damper side the degree of depth uprightly is set, can regulate the action period of damper thus, that is, can regulate the moment that reduces speed now that furls axle.

As above-mentioned one-way clutch, have: the clutch disc of damper side, the clutch disc of this damper side are arranged on the fixed axis that is fixed on the above-mentioned rolling-up box via damper; And the clutch disc that furls a side, this clutch disc that furls a side with furl an one revolution and can slide freely at its axis direction, but also have: clutch spring, this clutch spring loads to intermeshing direction two clutch disc, and time difference actuating mechanism, this time difference actuating mechanism is moved in the following manner, promptly, when curtain opens and closes, furling in the state that furls fully from curtain of axle begins during the fixing revolution of revolution, make two clutch disc keep bonding state, after this, the loading force that overcomes above-mentioned clutch spring makes above-mentioned two clutch disc separated from one another.

One-way clutch mechanism as in this case is provided with: the clutch disc of damper side; And the clutch disc that furls a side, this clutch disc that furls a side with furl axle revolution integratedly and can slide freely at its axis direction, and go up in week to carve within it and be provided with internal thread, and be provided with: mobile member, this mobile member has the screw thread that is screwed with above-mentioned internal thread on periphery, and can be on its axis direction of fixed axis upper edge slides freely and revolution suffers restraints; And clutch spring, this clutch spring loads to the damper side this mobile member.

As the time difference actuating mechanism of above-mentioned clutch, be provided with the mobile member that can relatively move along the axis direction of said fixing axle with respect to the clutch disc that furls a side; This clutch disc and mobile member and furl the revolution of a spool one and can slide freely at its axis direction, between clutch disc and mobile member, clamp clutch spring, and, make above-mentioned mobile member be connected in fixed axis via spiral action mechanism, above-mentioned spiral action mechanism has following structure, promptly, furl the rotating occasion of axial curtain direction of extension making, in the revolution of fixedly revolution in the early stage, under the intermeshing state of above-mentioned two clutch disc, above-mentioned mobile member is moved to the direction of leaving from the damper side; Behind the revolution of revolution regulation, above-mentioned clutch disc and the mobile member that furls a side is combined into one, and is driven to the direction of leaving from the damper side; Furl axial curtain and furl the rotating occasion of direction making, the clutch disc and the mobile member that furl a side are combined into one, and be driven to direction near the clutch disc of damper side, intermesh back revolution fixedly in the revolution of revolution in two clutch disc, above-mentioned mobile member is driven to the direction near the clutch disc of damper side.In addition, above-mentioned spiral action mechanism is provided in a side of the screw thread that screws togather mutually on fixed axis and the mobile member.And then, furl the actuating range of the damper in the later stage that the clutch disc of a side and the slidable scope between the mobile member furl corresponding to curtain.

In such occasion, be located at the fixed axis on the support of rolling-up box and be located between the spring base that furls on the axle, be provided with and furl the helical spring that curtain is used, by of the rotation of this fixed axis with respect to above-mentioned support, can adjust above-mentioned helical spring revolution loading force, and, at this fixed axis with furl and be provided with damper between the axle, wherein, set the spiral action mechanism between mobile member and the fixed axis in the following manner, promptly, from by till furling axle and furling deceleration zero hour that curtain begins to make until engaging one another by clutch disc the damper action, the above-mentioned clutch disc that furls a side is driven to the direction near the clutch disc of damper one side, such idle running district is set on the said fixing axle, that is, and in the curtain stretching process, when the above-mentioned clutch disc that furls a side surpasses the start scope of this spiral action mechanism, this clutch disc that furls a side is dallied on the spot with respect to supporting axis.

By above detailed description, if adopt automatic winding screen device of the present invention, as the curtain volume is installed in helical spring furling on the axle as drive source, thereby furl automatically in the window shade arrangement of this curtain, setting is used for relaxing the impact that produces when furling above-mentioned curtain and the damper of impact sound, and the resistance in the time of as far as possible reducing the curtain stretching, extension, thereby can improve operability, in addition, damper was failure to actuate till the deceleration zero hour that can set arbitrarily, can brings into play the helical spring power of furling that is used for furling curtain effectively.

In addition, as above-mentioned one-way clutch mechanism, be provided with: the clutch disc of damper side, the clutch disc of this damper side are arranged on the fixed axis that is fixed in rolling-up box via damper; And the clutch disc that furls a side, this clutch disc that furls a side with furl axle revolution integratedly and can slide freely at its axis direction, and, also be provided with: clutch spring, this clutch spring loads to the damper side this mobile member; And time difference actuating mechanism, this time difference actuating mechanism is moved in the following manner, promptly, when curtain opens and closes, furl the state that furls fully from curtain of axle begin until revolution fixedly revolution during in, make two clutch disc keep bonding state, after this, the loading force that overcomes above-mentioned clutch spring makes above-mentioned two clutch disc separated from one another.According to above structure, span regardless of curtain, only in the fixed range in the later stage of taking in curtain, bring into play the effect of the brake force of above-mentioned damper effectively, therefore, thereby the resistance that has not only reduced when curtain stretches can improve operability, and when furling, can bring into play the effect that furls with the helical spring power of furling effectively, and, even owing in the operating process that curtain stretches, curtain is under the half-open state, make occasion that operation box puts down etc. because of maloperation, the brake force that above-mentioned damper is produced plays a role, therefore, the big bump that produces because of operation box and rolling-up box bump and big impact sound promptly can not take place, can not damage between operation box and rolling-up box because of carelessness makes banjo splint yet, improve operability and safety thereby provide.

Description of drawings

Fig. 1 is the front view with the broken section of the 1st embodiment of automatic winding screen device of the present invention.

Fig. 2 is the vertical view of analysing and observe with the 1st embodiment section of automatic winding screen device of the present invention.

Fig. 3 is the sectional view that furls axle under damper operating state (when curtain furls) of above-mentioned the 1st embodiment.

Fig. 4 is the sectional view that furls axle under damper non-action state (when curtain stretches) of above-mentioned the 1st embodiment.

Fig. 5 is the screw of the clutch disc that furls a side of above-mentioned the 2nd embodiment sectional view that furls axle of (when curtain furls beginning) when beginning.

Fig. 6 is stating the sectional view that furls axle under the damper operating state of the 2nd embodiment.

Fig. 7 is the sectional view that the curtain of above-mentioned the 2nd embodiment furls axle when stretching.

Fig. 8 is expression and the elevation of the broken section of the 3rd embodiment of automatic winding screen device of the present invention.

Fig. 9 is the amplification view that furls axle under damper operating state (when mobile member moves beginning relative to clutch disc) of above-mentioned the 3rd embodiment.

Figure 10 is the amplification view that furls axle under damper operating state (mobile member is in clutch disc moves) of above-mentioned the 3rd embodiment.

Figure 11 is the amplification view that furls axle under damper operating state (mobile member moves when stopping relative to clutch disc) of above-mentioned the 3rd embodiment.

Figure 12 be above-mentioned the 3rd embodiment at the damper amplification view that furls axle under the operating state not.

Figure 13 is the front view of the screw of the clutch disc that furls a side of the 4th embodiment of the present invention partial cutaway of (when curtain furls beginning) when beginning.

Figure 14 is the amplification view that furls axle of above-mentioned the 4th embodiment.

Figure 15 is the front view that the curtain of the one-way clutch mechanism of the 5th embodiment of the present invention furls the partial cutaway under the state fully.

Figure 16 is the front view of the partial cutaway of the clutch disc of the clutch disc that furls a side of above-mentioned the 5th embodiment and damper one side when breaking away from.

Figure 17 be above-mentioned the 5th embodiment furl the clutch disc mobile end of a side time the front view of (curtain stretches when finishing) partial cutaway.

The specific embodiment

Below, the embodiment of the automatic winding screen device that present invention will be described in detail with reference to the accompanying.

Fig. 1 and Fig. 2 are the schematic diagram that the integral body of the 1st embodiment of automatic winding screen device of the present invention constitutes, herein, represented is the window shade arrangement that can make the horizontal switch of curtain, window shade arrangement of the present invention is not limited to above-mentioned horizontal on-off mode, can be applicable to that also curtain with the above-below direction switch furls the occasion to the top automatically.

In addition, though above-mentioned window shade arrangement be applicable at the device of the shading of architectural openings portion, heat insulation and insect protected etc., be not limited to these purposes, can also be applicable to the front of shed and the window shade arrangement of the dustproof usefulness of the peristome of the dining car that adopts for the preparation meals.

The represented window shade arrangement of above-mentioned Fig. 1 and Fig. 2 has the pelmet 1 that is arranged on architectural openings portion, by supporting the also revolution rolling-up box that furls axle 6 freely of coiling curtain 7 to constitute this pelmet 1 one sides' side frame 2.Above-mentioned pelmet 1 is by the upper and lower frames 3 of the upper and lower side that is connected above-mentioned side frame 2,4 are connected to each other with the opposing party's relative with this side frame 2 side frame 5 and constitute, in constituting the rolling-up box of above-mentioned side frame 2 furl on the axle 6 in helical spring 9 is housed, the revolution loading force that produces with reversing of this helical spring 9 is as the power source that is used for furling furling the curtain on the axle 6, and constitute in the mode of automatic open curtain 7, front end at above-mentioned curtain 7 is equipped with the operation box 8 that switching manipulation is used, open when being provided with at curtain 7, the blocking device 10 that is arranged on this operation box 8 combines with side frame 5, so that curtain 7 keeps opening the state of setting.In addition, the upper and lower side of above-mentioned curtain 7 and operation box 8 is directed in above-mentioned upper and lower frames 3,4.

The above-mentioned of support 12,13 at the upper and lower side that via support member 14,15 its two ends is supported on freely rotating rolling-up box respectively furls on the axle 6, portion is inserted through fixed axis 16 on the support 13 of bottom is fixed in the end within it, the fixedly end of helical spring 9 of on the spring base 18 that is fixedly attached on this fixed axis 16, reeling, meanwhile, the other end of this helical spring 9 is fixedly mounted on freely and be fixed on the above-mentioned spring base 19 that furls on the axle 6 with respect to 16 revolutions of said fixing axle.Like this, the axle 6 that furls of curtain 7 is connected with fixed axis 16 via helical spring 9.

In addition, such as shown in Figure 3 and Figure 4, be provided with oil damper 25 at the front end of said fixing axle 16, at the gyroaxis 25a of this oil damper with furl between the axle 6 and be provided with one-way clutch mechanism 30.

This one-way clutch mechanism 30 makes at the revolution loading force that overcomes helical spring 9 and furls axle 6 towards the rotating occasions of direction that curtain 7 stretches, and makes damper 25 and furls being connected between spools 6 and cut off automatically; And furling under the effect of axle 6 at the revolution loading force of helical spring 9 towards the rotating occasion of direction that furls curtain 7, make damper 25 and furl spools 6 and be connected.

Specifically, above-mentioned one-way clutch mechanism 30 is provided with the clutch disc 31 of the damper side that is connected with this gyroaxis 25a, and the clutch disc 32 that furls a side.This clutch disc 32 that furls a side with furl the revolution of axle 6 one and can slide freely, and the supporting axis 33 of intercalation pivotally on the clutch disc 31 that is arranged on above-mentioned damper side freely at its axis direction.In addition, be provided with clutch teeth 31a, 32a between two clutch disc 31,32, this clutch teeth 31a, 32a furl axle 6 and do not mesh towards the rotating occasions of direction that stretch curtain 7 making, and furl axle 6 towards the rotating occasion engagement of the direction that furls curtain 7 making.

In addition, be provided with spring 34 between the flange part 33a of the front end of bolster 33 and clutch disc 32, this spring 34 is as the load maintainer that the clutch disc 32 that furls a side is loaded on the degree that two clutch teeth 31a, 32a can mesh to the clutch disc 31 of damper side.In the occasion of the window shade arrangement turned upside down that makes Fig. 1,, can reach the degree that makes clutch disc 32 be connected to clutch disc 31 at any time and get final product for pushing of this spring 34.Have again, under Fig. 1 state,, then can save spring 34 as above-mentioned load maintainer if the weight of clutch disc 32 is enough to make it at any time on the butt clutch disc 31.

Above-mentioned oil damper 25 is connected the connecting portion 25b of housing with said fixing axle 16, and above-mentioned gyroaxis 25a is connected with the brake tube that is housed in freely rotating in this housing via viscous liquid, and make this gyroaxis 25a pass the end cap of housing and derive, but be not limited only to this, also can adopt well-known other various structures.In addition, in illustrated the 1st embodiment, though the connecting portion 25b of the housing of damper 25 is connected with fixed axis 16, and the gyroaxis 25a of damper 25 is connected with clutch disc 31, above-mentioned connection also can be reversed.

In having the automatic winding screen device of above-mentioned formation, the damper 25 on the fixed axis 16 that is fixed on the rolling-up box and furl the axle 6 between, be provided with when furling curtain 7 with damper 25 with furl axle 6 one-way clutch mechanism that are connected 30, when curtain 7 trails, as shown in Figure 4, because this one-way clutch mechanism 30 can not be passed to damper 25 with the revolution that furls axle 6, therefore, when stretching operation, this curtain 7 can not be subjected to the resistance that causes by the friction in the damper 25 etc., and the resistance can reduce curtain as much as possible and stretch the time, with existing situation about being contained in the one-way clutch in the damper is compared, can be carried out the operation that curtain stretches more trippingly.

On the other hand, be stored in the occasion that revolution loading force in the helical spring 9 furls curtain 7 in utilization, as shown in Figure 3, because above-mentioned one-way clutch mechanism 30 is under the connection status, then make and furl axle 6 and be connected with fixed axis 16 by damper 25, therefore, this furls the axle 6 revolution loading force effect turning down at helical spring 9, but under the effect of the cushion effect of damper 25, suppressed the increase of speed of gyration, thus, when operation box 8 collides with rolling-up box, can prevent to cause big impact, and can prevent to produce big impact sound.

Fig. 5 to Fig. 7 represents the action situation of the major part of the 2nd embodiment of the present invention.Have again, except the one-way clutch mechanism part, the overall formation of the 2nd embodiment is identical with the 1st embodiment of Fig. 1 and Fig. 2 explanation in essence, therefore, in the explanation of following the 2nd embodiment, relate to the 1st embodiment same section and still being illustrated, and omit and give unnecessary details accordingly with the symbol of corresponding the 1st embodiment in the accompanying drawing.

One-way clutch mechanism 40 among the 2nd embodiment, identical with the occasion of above-mentioned the 1st embodiment, be provided with the clutch disc 41 of the damper side that is connected with fixed axis 16 on the support 13 that is fixed in rolling-up box via damper 25 and furl the clutch disc 42 of a side.This clutch disc 42 that furls a side with furl the revolution of axle 6 one and can slide freely at its axis direction, and be connected with bolster 43 on the clutch disc 41 that is located at above-mentioned damper side via spiral action mechanism 44.About 25 of dampers as the structure that in the 1st embodiment, illustrates.

Between two clutch disc 41,42, be provided with intermeshing clutch teeth 41a, 42a.These clutch teeth 41a, 42a preferably can not mesh making to furl under the rotating occasions of direction that axle 6 stretches towards curtain 7, and furl axle and mesh under the 6 rotating occasions of direction that furl towards curtain 7 making, but also not necessarily must possess this formation, as long as can transmit rotation by mutual butt.

Such as shown in the figure, spiral action mechanism 44 can be made of external screw thread 45 and the internal thread 46 that the bolster 43 on the clutch disc 41 that is located at the damper side is connected with mutual spiral on the clutch disc that furls a side 42 these two sides, for example: also can adopt following structure, promptly, be located at the helicla flute on above-mentioned bolster 43 or the clutch disc 42, and be arranged on the opposing party and embedding protrusions such as pin wherein.Key is, the clutch disc 42 that furls a side can be turned round by above-mentioned relatively supporting axis 43, preferably be formed in to make and furl the rotating occasion of direction that axle 6 stretches towards curtain 7, follow the revolution of this clutch disc 42 that its direction to the clutch disc 41 of leaving the damper side is driven, and furl axle 6 towards the rotating occasion of direction that curtain 7 is furled making, clutch disc 42 is driven to the direction near the clutch disc 41 of above-mentioned damper side.

In the above-mentioned spiral action mechanism 44 between clutch disc 42 in illustrated the 2nd embodiment and the supporting axis 43, according to externally threaded length, set from furling curtain 7, the amount of furling of curtain 7 until be connected to each other the deceleration zero hour that makes that damper 25 moves by clutch disc 41,42 till by furling axle 6, during this period, to driving (screwing togather motion) above-mentioned clutch disc 42 that furls a side with the approaching direction of the clutch disc 41 of damper one side.Fig. 5 represents that Fig. 6 represents to be connected to each other the state that makes damper 25 actions via clutch disc 41,42 by furling the state of axle 6 when beginning to furl curtain 7.

When setting the amount of furling of the curtain 7 till deceleration zero hour of damper 25 action like this according to the length of external screw thread 45, beginning during the zero hour of slowing down internal damping device 25 and be failure to actuate from furling, thus, even be subjected at curtain 7 external force such as wind do the time spent also can directly utilize the powerful power that furls of helical spring 9 to furl curtain 7.

In addition, furl the rotating occasions of direction that axle 6 stretches towards curtain making, as shown in Figure 7, clutch disc 42 is for the helical movement to the direction of leaving from clutch disc 41, therefore, the connection of clutch disc 41,42 disconnects, and institute can't be passed to damper 25 so that furl the revolution of axle 6, thereby makes the stretching, extension of curtain 7 operate and can carry out trippingly.

Proceeding the stretching, extension of curtain 7 operates when causing clutch disc 42 to surpass the actuating range of this spiral action mechanism 44, that is: when the internal thread 46 of the clutch disc 42 that is threaded with external screw thread 45 has surpassed the scope of this external screw thread 45, above-mentioned clutch disc 42 dallies with respect to supporting axis 43 in this occasion, for this reason, establish the end place quarter of the external screw thread 45 on this supporting axis 43 and be provided with threadless idle running district 47 (with reference to Fig. 6).Above-mentioned external screw thread 45 quarter the scope of establishing must be corresponding to following scope, promptly, by furling axle 6 states of opening from full extension curtain 7 is furled time-out, in this process, engage and till making damper 25 action beginnings the scope that the internal thread 46 of clutch disc 42 is moved up to a pair of clutch disc 41,42.In addition, in the discrepant occasion of the length of curtain 7, above-mentioned idle running district 47 should be able to absorb this difference in length.

As being used for to the clutch disc 42 in the above-mentioned idle running district 47 that is in supporting axis 43, between the flange part 43a of the front end of above-mentioned supporting axis 43 and clutch disc 42, be provided with spring 48 to the record mechanism that external screw thread 45 sides load.Because the formation of this spring 48 is identical in essence with the spring 34 of above-mentioned the 1st embodiment with effect, therefore, omits its explanation.

Adopt the screw thread inserted mode that supporting axis 43 is arranged on the clutch disc 41 of above-mentioned damper side with erecting, and the fixed-site that this screw thread is inserted with the retainer 49 of thrust screw etc.The degree of depth that this supporting axis is provided with erecting can be undertaken freely adjusting by unclamping the degree of depth that is provided with that this retainer 49 changes the supporting axis of relative clutch disc 41 with erecting, and therefore the length change of above-mentioned thus external screw thread 45, can regulate 25 action periods of damper.

Fig. 8 represents that the integral body of the automatic winding screen device relevant with the present invention the 3rd embodiment constitutes schematic diagram, because except the internal structure that furls axle 6, essential structure is not compared with the 1st embodiment and is changed, therefore, same kind of symbol of mark in a part or considerable part, and omit corresponding explanation.

In the window shade arrangement of the 3rd embodiment, prop up the inside of fixed axis 6 of the support 12,13 of the upper and lower side that is held in rolling-up box respectively with freely rotating via support member 64,65 at two ends, be inserted through the fixed axis 66 that makes end be fixed in the support 12 on top, and, also be inserted through the end and be fixed on fixed axis 67 on the lower bracket 13.In addition, one end of helical spring 9 is reeled and is fixed on the spring base 68 that is supported in regularly on the said fixing axle 66, and, the other end of this helical spring 9 is fixedly mounted on the spring base 69, this spring base 69 with can around said fixing axle 66 turn round freely but can not around furl the axle 6 rotating modes be mounted.Thus, the axle 6 that furls of curtain 7 is connected with fixed axis 66 via helical spring 9.

In addition, as the expression at length of Fig. 9 to Figure 12 institute like that, on the front end of said fixing axle 67, be provided with oil damper 75, the gyroaxis 75a of this oil damper 75 and furl spools 6 between be provided with one-way clutch mechanism 80.

For this one-way clutch mechanism 80, make at the revolution loading force that overcomes helical spring 9 to furl axle towards the rotating occasion of direction that stretches curtain 7, cut off damper 75 automatically and furl being connected between spools 6; And furling under the effect of axle 6 at the revolution loading force of helical spring 9 towards the rotating occasion of direction that furls curtain 7, be connected between making damper 75 and furling spools 6.

In more detail, above-mentioned one-way clutch mechanism 80 is provided with the clutch disc 81 that is located at the damper side on the fixed axis 67 that is fixed on the above-mentioned rolling-up box via damper 75, with with the clutch disc 85 that furls axle 6 sides that furls axle 6 one revolution and can slide freely at this axis direction, and, have two clutch disc 81,85 clutch springs 84 to its intermeshing direction loading, and the mobile member 86 of the formation time difference actuating mechanism of moving in the following manner, promptly, when curtain 7 opens and closes, furl the axle 6 states that furl fully from curtain 7 begin until the revolution fixedly revolution during in, make two clutch disc 81,85 keep bonding state, after this, the loading force that overcomes above-mentioned clutch spring 84 makes above-mentioned two clutch disc 81,85 is separated from one another.

The mobile member 86 that above-mentioned clutch member 82 is provided with the clutch disc 85 that furls axle 6 sides and can relatively moves on the axis direction of said fixing axle 67 with respect to this clutch disc 85.For this mobile member 86, the internal thread 86b that on the interior week of the flange part 86a of its base end part, is provided with, by this internal thread and the external screw thread 67a that is located on the said fixing axle 67 are screwed togather mutually, constitute above-mentioned spiral action mechanism 87, make above-mentioned mobile member 86 relatively clutch disc 85 on the axis direction of fixed axis 67, relatively move.In addition, for above-mentioned mobile member 86, it embeds the groove 85b be located on the above-mentioned clutch disc 85 and intercalation mutually by the protuberance 86c on the end that is located at clutch disc 81 sides, on this clutch disc 85 and ends clutch disc 81 side opposition sides, the retainer 85c of the protuberance 86c butt of setting and above-mentioned mobile member 86, thus, make clutch disc 85 and mobile member 86 furl the revolution of axle 6 one, and the protuberance 86c of above-mentioned mobile member 86 can reciprocatingly slide freely in the groove 85b of clutch disc 85 along its axis direction with above-mentioned.

In addition, be provided with clutch teeth 81a, 85a between two clutch disc 81,85, this clutch teeth 81a, 85a furl axle 6 and do not mesh towards the rotating occasions of direction that stretch curtain 7 making, and furl axle 6 towards the rotating occasion engagement of the direction that furls curtain 7 making.

In addition, the clutch disc 85 that furls the clutch component 82 of a side as 85 pairs of clutch disc with respect to the damper side is loaded on the load maintainer of the degree that two clutch teeth 81a, 85a can mesh, and is provided with clutch spring 84 between the flange part 86a of the base end part of mobile member 86 and clutch disc 85.In the occasion that the window shade arrangement of Fig. 8 is provided with up and down a certain posture, this clutch spring 84 is to be pressed into to make clutch disc 85 be connected to the degree of clutch disc 81 at any time.

Above-mentioned spiral action mechanism 87 has following structure, promptly, furl clutch member 82 relative said fixing axle 67 revolutions of axle 6 sides, furl axle 6 towards the rotating occasions of direction that stretch curtain 7 making, in the revolution of fixedly revolution in the early stage, the clutch teeth 81a that furls the clutch disc 81 of the clutch teeth 85a of clutch disc 85 of axle 6 sides and damper 75 sides slides mutually, only make simultaneously above-mentioned mobile member 86 be driven (Fig. 9～Figure 10) to the direction of leaving damper 75 sides, revolution is revolution and after making the retainer 85c of protuberance 86c arrival clutch disc 85 of mobile member 86 fixedly, and above-mentioned clutch disc 85 and mobile member 86 are combined into one and are driven (Figure 11～Figure 12) to the direction of leaving damper 75 sides.

Otherwise, furl axle 6 towards furling the rotating occasion of direction of curtain 7 making, be combined into one with mobile member 86 and be driven (Figure 12～Figure 11) in the clutch disc 85 of above-mentioned clutch member 82 to direction near the clutch disc 81 of damper 75 sides, in the revolution after the clutch teeth 81a of the clutch disc 81 of clutch teeth 85a and damper 75 sides of the clutch member 82 that furls axle 6 sides meshes, above-mentioned mobile member 86 is driven (Figure 11～Fig. 9) to the direction near the clutch disc 81 of damper 75 sides.During this period, via mobile member 86, clutch disc 85 and with the clutch disc 81 of its engagement, the revolution that furls axle 6 is passed on the housing of oil damper 75, on the other hand, because the gyroaxis 75a of oil damper 75 is fixed on the support 13 of rolling-up box by fixed axis 67, therefore, damper 75 plays a role, and applies brake force to furling axle 6.

As mentioned above, for the spiral action mechanism 87 between mobile member 86 and the fixed axis 67, from beginning to make during curtain 7 is stretched over that this stretching, extension carries out, mobile member 86 is moved to the direction of leaving from damper 75 with respect to fixed axis 67, just move shown in Figure 11 apart from d after, it combines and makes this clutch disc 85 also to move to same direction with clutch disc 85.Therefore, when curtain 7 furls, the occasion of not leaving in clutch disc 85 (Figure 10 and Figure 11) from clutch disc 81, with furl beginning in, clutch disc 81,85 in conjunction with and make damper 75 actions; On the other hand, occasion (Figure 12) in 81,85 separation of two clutch disc, by furling curtain 7, mobile member 86 with clutch disc 85 to damper 75 side shiftings, curtain 7 furls and finishes after clutch disc 85 contacts with clutch disc 81, that is to say that during till the mobile member 86 spiral travel distance d, damper 75 is moving always.

In the above-mentioned oil damper 75, brake tube 75b is housed in freely rotating the inside of the clutch disc 81 that constitutes housing via viscous liquid, and the gyroaxis 75a that extends from the end of this brake tube 75b is derived from above-mentioned housing via containment member 75c, its front end is connected with said fixing axle 67, but be not limited thereto, also can adopt well-known various structure.

In having the automatic winding screen device of above-mentioned formation, the damper 75 on the fixed axis 67 that is fixed on the rolling-up box and furl the axle 6 between, be provided with and make damper 75 when curtain 7 furls and furl axle 6 one-way clutch mechanism that are connected 80, when curtain 7 stretches, as Fig. 9～shown in Figure 12, because this one-way clutch mechanism 80 can not be passed to damper 75 with the revolution that furls axle 6, therefore, when stretching operation, this curtain 7 can not be subjected to the effect of the resistance that causes by the friction in the damper 75 etc., thereby the resistance can reduce curtain 7 to greatest extent and stretch the time, with existing situation about being contained in the one-way clutch in the damper is compared, can be carried out the operation that curtain stretches more trippingly.

On the other hand, the revolution loading force that is stored in the helical spring 9 in utilization furls in the occasion of curtain 7, as Fig. 9～shown in Figure 11, because in a few revolutions that furl axle 6 before curtain 7 is about to take in, above-mentioned one-way clutch mechanism 80 is in engagement state always, therefore, furling axle 6 is connected with fixed axis 67 via damper 75, therefore, this furls the axle 6 revolution loading force effect turning down at helical spring 9, yet, suppressed the increase of speed of gyration by the cushion effect of damper 75, like this, produce big impact in the time of can preventing operation box 8 with the rolling-up box collision, also prevented to produce big impact sound.

And, owing to be not subjected to the influence of the span of curtain 7, only in the certain limit in the later stage of taking in curtain 7, apply the brake force that is produced by above-mentioned damper 75, therefore, can not only reduce the resistance when curtain 7 stretches and improve operability, and when furling, can apply the power that furls that furls with helical spring 9 effectively, in addition, even because the curtain 7 in the operating process that curtain 7 stretches is under the half-open state, because of occasion of maloperation releasing operation frame 8 etc., also can apply the brake force of above-mentioned damper 75 effectively, therefore, can not make because of operation box 8 collides with rolling-up box and produce big impact, can not send big impact sound yet, can between operation box 8 and rolling-up box, not damage yet because of carelessness makes banjo splint, and then, compare with existing automatic winding screen device, can increase substantially operability and safety.

Figure 13 and Figure 14 represent the 4th embodiment of the present invention.

The automatic winding screen device of the 4th embodiment is arranged on the fixed axis 66 on the support 12 of upper end that the end is fixed on rolling-up box integratedly with being used as the helical spring 9 of the power source that furls curtain 7 and one-way clutch mechanism part.

In addition, the main composition of the one-way clutch mechanism part of the 4th embodiment, as shown in Figure 8, with the 3rd embodiment is identical in essence, therefore, in the explanation of following the 4th embodiment, to adopting the symbol of corresponding the 3rd embodiment in the accompanying drawing to be illustrated with a part, and omit corresponding repeat specification with the 4th embodiment.

In the window shade arrangement of the 4th embodiment, the above-mentioned two ends that furl axle 6 are supported at the support 12,13 of rolling-up box respectively with freely rotating via support member 64,65, furl axle inside, 6 ground at this and be inserted through fixed axis 66 on the support 12 that the end is fixed on top, the fixedly end of helical spring 9 of on the spring base 68 that is supported at regularly on this fixed axis 66, reeling, and, the other end of this helical spring 9 be fixedly mounted on can around said fixing axle 66 turn round freely but with furl on the axle 6 one rotating spring base 69.Thus, the axle 6 that furls of curtain 7 is connected with fixed axis 66 via helical spring 9.Said fixing axle 66 can be adjusted the well-known mechanism of the revolution loading force of helical spring 9 by set being used for, to fix with respect to any rotating state of the support that furls curtain.

In addition, as the expression at length of Figure 14 institute like that, on the front end of said fixing axle 66, be provided with oil damper 75, be provided with one-way clutch mechanism 80 at the gyroaxis 75a of this oil damper 75 with between furling spools 6.

Above-mentioned one-way clutch mechanism 80 is provided with the clutch disc 81 that is located at the damper side on the fixed axis 66 that is fixed on the above-mentioned rolling-up box via oil damper 75, with with the clutch disc that furls a side 85 that furls axle 6 one revolution and can back and forth move freely at its axis direction, and, also be provided with two clutch disc 81,85 to clutch spring 84 and clutch member 82 that its intermeshing direction is loaded.Clutch member 82 constitutes the time difference actuating mechanism of clutch, its role is to, when curtain 7 opens and closes, furl states revolution that axle 6 furls fully from curtain 7 fixedly revolution during, make two clutch disc 81,85 keep bonding state, and after this, the loading force that overcomes above-mentioned clutch spring 84 makes above-mentioned two clutch disc 81,85 separated from one another.

In order to adjust the revolution loading force of helical spring 9, fixed axis 66 can suitably rotate, like this, just changed the position of the mobile member 86 on the external screw thread 66a on the fixed axis 66, therefore, when proceeding curtain 7 stretching, extension operations and causing when the mobile member 86 of clutch member 82 surpasses the actuating range of this spiral action mechanism 87, promptly, when having surpassed the scope of this external screw thread 66a with the internal thread 86b of the mobile member 86 that is screwed together in the external screw thread 66a that set out quarter on fixed axis 66, in order under this occasion, to make above-mentioned mobile member 86, establish end the quarter of the external screw thread 66a on this fixed axis 66 and be provided with threadless idle running district 66b with respect to fixed axis 66 idle running.The scope of establishing at quarter of above-mentioned external screw thread 66a should be following scope, that is, by furling axle 6 when full extension is opened state and furled curtain 7, in this process, engage and till making damper 75 begin action the scope that the internal thread 86b of mobile member 86 is moved up to a pair of clutch disc 81,85.In addition, in the occasion of the discrepant window shade arrangement of length that is applicable to curtain 7, above-mentioned idle running district 66b can absorb the difference of this length.

As to the mobile member 86 of the clutch member 82 on the above-mentioned idle running district 66b that is in fixed axis 66 to the mechanism that external screw thread 66a side loads, be provided with spring 89 being located between spring base 88 on the fixed axis 66 and the above-mentioned mobile member 86.Furl direction when revolution towards curtain 7 furling axle 6, this spring 89 loads with the degree that can make internal thread 86b on the mobile member 86 be screwed together in the external screw thread 66a of fixed axis 66 at any time and gets final product.Have again, under Figure 14 state,, then can save spring 89 as above-mentioned load maintainer if the weight of mobile member 86 (clutch member 82) can make this internal thread 86b be pressed against at any time on the external screw thread 66a on the fixed axis 66.

In addition, because automatic winding screen device and the formation thereof of the 4th embodiment is identical with above-mentioned the 3rd embodiment in essence with effect, therefore, to will mark prosign, and omit explanation accordingly with a part or considerable part.

Figure 15 to Figure 17 represents the 5th embodiment of the present invention.

Automatic winding screen device for the 5th embodiment, its one-way clutch mechanism 90 has the clutch disc 91 of damper side, clutch member 92, and to the clutch spring 94 of this mobile member 96 to the loading of damper side, wherein, clutch member 92 is as the time difference actuating mechanism that constitutes clutch, it has clutch disc 95 and the mobile member 96 that furls a side, this clutch disc 95 that furls a side with furl the revolution of axle 6 one and can reciprocatingly slide freely at its axis direction, and on interior week, carve and establish internal thread 95b, and mobile member 96 has the external screw thread 96a that screws togather with above-mentioned internal thread 95b on periphery, and can reciprocatingly slide freely at fixed axis 67 upper edge axis directions.

Have again, because the main composition except the one-way clutch mechanism part of the 5th embodiment, with the 3rd embodiment by Fig. 8 explanation is identical in essence, therefore, in the explanation of following the 5th embodiment, relate to the 3rd embodiment and adopt the symbol of corresponding the 3rd embodiment in the accompanying drawing to be illustrated, so give unnecessary details no longer at this point with a part.

Now be described in further detail with regard to the 5th embodiment, as mentioned above, the mobile member 96 of go up carving the clutch disc that furls a side 95 of establishing internal thread 95b in above-mentioned clutch member 92 possesses week and on the axis direction of said fixing axle 67, sliding freely with respect to clutch disc 95; Screw togather mutually by external screw thread 96a on the periphery that is located at this mobile member 96 and internal thread 95b on the interior week of clutch disc 95 that furls a side, constitute spiral action mechanism; To shown in Figure 17, above-mentioned mobile member 96 is moved back and forth as Figure 15 on the axis direction of said fixing axle 67 freely with respect to clutch disc 95.So, for above-mentioned mobile member 96, by will embedding among the locational groove 96c of relative direction, the 96c that are located at week in the above-mentioned mobile member 96 along the two ends of the pin 67b that connects with the perpendicular direction of the axis of said fixing axle 67, mobile member 96 is with restrained but can be inserted along axis direction freely the mode of sliding and be embedded on the fixed axis 67 with respect to the revolution of fixed axis 67.

In addition, as the load maintainer that the clutch disc 91 that furls a side is loaded on the degree that two clutch teeth 91a, 95a can mesh, in the end of support member 65 sides that furl axle 6 of mobile member 96 be located between the spring base 98 on the said fixing axle 67 and be provided with clutch spring 94.With window shade arrangement with upper and lower in the occasion that is provided with of any one posture, this clutch spring 94 can be so that clutch disc 95 be engaged in the degree of clutch disc 91 at any time pushes and get final product.

For above-mentioned spiral action mechanism 97, furl axle 6 from furling the rotating occasion of direction that state stretches towards curtain 7 as shown in figure 15 fully making, in the revolution of the fixedly revolution at initial stage of the state that becomes Figure 16, when the clutch teeth 91a of the clutch disc 91 of clutch teeth 95a of clutch disc 95 that furls axle 6 sides and damper 75 sides slides over each other, by screwing togather of external screw thread 96a and internal thread 95b above-mentioned mobile member 96 is driven to the direction of damper 75 sides, revolution is revolution and after making the retainer 75d of end arrival damper 75 of mobile member 96 fixedly, as Figure 16 and as shown in Figure 17, mobile member 96 stops on this position, and above-mentioned clutch disc 95 is driven to the direction of leaving damper 75 sides.

Otherwise, furl axle 6 towards furling the rotating occasion of direction of curtain 7 making, by screwing togather of external screw thread 96a and internal thread 95b, above-mentioned clutch member 95 is driven to the position of Figure 16 from the state of Figure 17; The clutch teeth 91a of the clutch disc 91 of the clutch teeth 95a of clutch disc 95 and damper 75 sides intermeshes, and in revolution after this, above-mentioned mobile member 96 is driven to the direction of the clutch disc 91 of leaving damper 75 sides and becomes the state of Figure 15.

After becoming the state of Figure 15, be passed on the housing of oil damper 75 via clutch disc 95 with revolution that the clutch disc 91 of its engagement will furl axle 6, on the other hand, because the gyroaxis 75a of oil damper 75 is fixed on the support of rolling-up box by fixed axis 67, therefore, damper 75 plays a role and applies brake force to furling axle 6.

As mentioned above, begin from curtain 7 to stretch until this stretching, extension carry out during, spiral action mechanism 97 between mobile member 96 and the fixed axis 67 makes mobile member 96 and clutch disc 95 move to the state of Figure 16, Figure 17 from the state of Figure 15 with respect to fixed axis 67, after this, clutch disc 95 is moved to the same direction of leaving from clutch disc 91, and when curtain 7 furls, carry out reverse action.Therefore, when curtain 7 furls, the occasion of not leaving in clutch disc 95 (Figure 15 and Figure 16) from clutch disc 91, when furling beginning, clutch disc 91,95 combinations, damper 75 actions; On the other hand, in the occasion (Figure 17) that two clutch disc 91,95 are separated, by furling curtain 7, mobile member 96 makes clutch disc 95 to damper 75 side shiftings, up to clutch disc 95 contact with clutch disc 91 back and curtain 7 furl finish till, damper 75 1 direct actings.

In addition, as required, fixed axis (with reference to Fig. 8 and Figure 14) that can make the spring that furls usefulness on the support that is located at rolling-up box etc. is connected in the shaft coupling 75e on the housing that is located at damper 75.But, in the occasion that connects the said fixing axle, according to the thought identical with the 2nd embodiment, need be provided with on the top of the external screw thread 96a of mobile member 96 and be used for threadless idle running district that clutch disc 95 is dallied under this occasion, and, need and can adjust helical spring revolution loading force with respect to the rotation of the support of rolling-up box by the said fixing axle.

Have, other formations and the effect of the automatic winding screen device of the 5th embodiment are identical with the 3rd embodiment in essence, therefore, mark prosign in a part or appropriate section again, and omit corresponding explanation.

Claims (13)

1. automatic winding screen device, be a kind of to reverse the revolution loading force that produces furls usefulness as curtain drive source by the interior helical spring that furls in the axle that is contained in the coiling curtain, the operation box that switching manipulation is used is installed in the front end of above-mentioned curtain, thereby the automatic winding screen device of this curtain of switch, it is characterized by

Make the above-mentioned axle that furls be supported on the rolling-up box with freely rotating, and, helical spring is fixedly arranged on the support of an end of this rolling-up box, this helical spring other end is installed on and can not be installed on the spring base that furls on the axle pivotally, be fixed in the fixed axis on the support of above-mentioned rolling-up box and furling between the axle, be provided with and make brake force act on the damper that this furls axle

Wherein, on the said fixing axle, clamped one-way clutch, by this one-way clutch, furl that axle overcomes above-mentioned helical spring revolution loading force and to the rotating occasion of direction that stretches curtain making, make damper and the disconnection that is connected that furls between the axle, and furling the rotating occasion of direction that axial curtain furls, at least the later stage that furls make damper with furl the axle be connected.

2. automatic winding screen device as claimed in claim 1 is characterized by,

As one-way clutch mechanism, be provided with:

The clutch disc of damper side, the clutch disc of this damper side are arranged on the fixed axis that is fixed on the above-mentioned rolling-up box via damper; And

Furl the clutch disc of a side, this furl a side clutch disc can with furl the revolution of a spool one and can slide freely at its axis direction, and freely intercalation pivotally on the supporting axis on the clutch disc that is arranged at above-mentioned damper side,

Be provided with clutch teeth between two clutch disc, this clutch teeth furls the rotating occasion of direction that axial curtain stretches and does not mesh making, and furls the rotating occasion engagement of direction that axial curtain furls making,

And, also be provided with load maintainer, this record mechanism so that the degree of two clutch teeth engagements the clutch disc that furls a side is loaded to the clutch disc of damper side.

3. automatic winding screen device as claimed in claim 1 is characterized by,

As this one-way clutch mechanism, be provided with:

The clutch disc of damper side, the clutch disc of this damper side are arranged on the fixed axis that is fixed on the above-mentioned rolling-up box via damper; And

Furl the clutch disc of a side, this clutch disc that furls a side with furl an one revolution and can slide freely at its axis direction, and be connected with supporting axis on the clutch disc that is arranged on above-mentioned damper side via spiral action mechanism,

The structure of above-mentioned spiral action mechanism is, the clutch disc that furls a side is turned round with respect to above-mentioned supporting axis, and, make the rotating occasion of direction that furls axial curtain stretching, extension, follow its revolution, the clutch disc that furls a side is driven to the direction of leaving from the clutch disc of above-mentioned damper side; And furl the rotating occasion of direction that axial curtain furls making, the clutch disc that furls a side then is driven to the direction near the clutch disc of above-mentioned damper side,

And, also being provided with clutch teeth on two clutch disc, this clutch teeth can be when the mutual butt of two clutch disc and is intermeshed.

4. automatic winding screen device as claimed in claim 3 is characterized by,

Above-mentioned spiral action mechanism be arranged at the damper side clutch disc supporting axis and furl the screw thread that screws togather mutually on the clutch disc both sides of a side.

5. automatic winding screen device as claimed in claim 4 is characterized by,

Set in the following manner and furl the clutch disc of a side and the spiral action mechanism between the supporting axis, promptly, from by till furling axle and furling deceleration zero hour that curtain begins to make until engaging one another by clutch disc the damper action, the above-mentioned clutch disc that furls a side is driven to the direction near the clutch disc of damper side

Such idle running district is set on above-mentioned supporting axis, that is, in the curtain stretching process, when the above-mentioned clutch disc that furls a side surpasses the start scope of this spiral action mechanism, this clutch disc that furls a side is dallied on the spot with respect to supporting axis.

6. automatic winding screen device as claimed in claim 5 is characterized by,

Be provided with load maintainer, this load maintainer loads to the spiral action mechanism side the clutch disc that furls a side in the idle running district that is in supporting axis.

7. as claim 5 and 6 described automatic winding screen devices, it is characterized by,

Can regulate supporting axis with respect to the clutch disc of damper side the degree of depth uprightly is set, can regulate the action period of damper thus.

8. automatic winding screen device as claimed in claim 1 is characterized by,

As one-way clutch, have:

The clutch disc of damper side, the clutch disc of this damper side are arranged on the fixed axis that is fixed on the above-mentioned rolling-up box via damper; And

Furl the clutch disc of a side, this clutch disc that furls a side with furl an one revolution and can slide freely at its axis direction,

But also have:

Clutch spring, this clutch spring loads to intermeshing direction two clutch disc, and

Time difference actuating mechanism, this time difference actuating mechanism is moved in the following manner, promptly, when curtain opens and closes, furling in the state that furls fully from curtain of axle begins during the fixing revolution of revolution, make two clutch disc keep bonding state, after this, the loading force that overcomes above-mentioned clutch spring makes above-mentioned two clutch disc separated from one another.

9. automatic winding screen device as claimed in claim 8 is characterized by,

As the time difference actuating mechanism of above-mentioned clutch, be provided with the mobile member that can relatively move along the axis direction of said fixing axle with respect to the clutch disc that furls a side; This clutch disc and mobile member and furl the revolution of a spool one and can slide freely at its axis direction clamp clutch spring between clutch disc and mobile member, and, make above-mentioned mobile member be connected in fixed axis via spiral action mechanism,

Above-mentioned spiral action mechanism has following structure, that is, furl the rotating occasion of axial curtain direction of extension making, in the revolution of fixedly revolution in the early stage, under the intermeshing state of above-mentioned two clutch disc, above-mentioned mobile member is moved to the direction of leaving from the damper side; Behind the revolution of revolution regulation, above-mentioned clutch disc and the mobile member that furls a side is combined into one, and is driven to the direction of leaving from the damper side; Furl axial curtain and furl the rotating occasion of direction making, the clutch disc and the mobile member that furl a side are combined into one, and be driven to direction near the clutch disc of damper side, intermesh back revolution fixedly in the revolution of revolution in two clutch disc, above-mentioned mobile member is driven to the direction near the clutch disc of damper side.

10. automatic winding screen device as claimed in claim 9 is characterized by,

Spiral action mechanism is provided in a side of the screw thread that screws togather mutually on fixed axis and the mobile member.

11. automatic winding screen device as claimed in claim 9 is characterized by,

Furl the actuating range of the damper in the later stage that the clutch disc of a side and the slidable scope between the mobile member furl corresponding to curtain.

12. the automatic winding screen device described in any of claim 9 to 11 is characterized by,

Be located at the fixed axis on the support of rolling-up box and be located between the spring base that furls on the axle, be provided with and furl the helical spring that curtain is used, by of the rotation of this fixed axis with respect to above-mentioned support, can adjust above-mentioned helical spring revolution loading force, and, at this fixed axis with furl and be provided with damper between the axle

Wherein, set the spiral action mechanism between mobile member and the fixed axis in the following manner, promptly, from by till furling axle and furling deceleration zero hour that curtain begins to make until engaging one another by clutch disc the damper action, the above-mentioned clutch disc that furls a side is driven to the direction near the clutch disc of damper one side

Such idle running district is set on the said fixing axle, that is, in the curtain stretching process, when the above-mentioned clutch disc that furls a side surpasses the start scope of this spiral action mechanism, this clutch disc that furls a side is dallied on the spot with respect to supporting axis.

13. automatic winding screen device as claimed in claim 8 is characterized by,

As one-way clutch mechanism, be provided with:

The clutch disc of damper side; And

Furl the clutch disc of a side, this clutch disc that furls a side with furl axle revolution integratedly and can slide freely at its axis direction, and go up in week to carve within it and be provided with internal thread,

And be provided with:

Mobile member, this mobile member has the screw thread that is screwed with above-mentioned internal thread on periphery, and can be on its axis direction of fixed axis upper edge slides freely and revolution suffers restraints; And

Clutch spring, this clutch spring loads to the damper side this mobile member.

Images