CN216381157U

CN216381157U - Stop device and electronic (window) curtain of (window) curtain

Info

Publication number: CN216381157U
Application number: CN202121569502.8U
Authority: CN
Inventors: 王金友
Original assignee: Shenzhen Xinbofu Intelligent Equipment Co ltd
Current assignee: Shenzhen Xinbofu Intelligent Equipment Co ltd
Priority date: 2021-01-11
Filing date: 2021-07-09
Publication date: 2022-04-26
Anticipated expiration: 2031-07-09

Abstract

The application discloses a limiting device of a curtain and an electric curtain, wherein the curtain comprises a first driving shaft, a second driving shaft, a driving device and a limiting device, and the second driving shaft and the first driving shaft are arranged in parallel; the driving device independently drives the corresponding first driving shaft and/or the second driving shaft; the limiting device is connected with the driving device; the limiting device comprises a first limiting structure and a second limiting structure, and the first limiting structure is connected with the first driving shaft; the second limiting structure is connected with the second limiting structure; the first limiting structure and the second limiting structure limit each other along the distance between the first driving shaft and the second driving shaft, and the first limiting structure and the second limiting structure limit each other and are interlocked and operated, so that the purpose of limiting the travel of different curtain fabrics is achieved.

Description

Stop device and electronic (window) curtain of (window) curtain

Technical Field

The application relates to the technical field of display, in particular to a limiting device of a curtain and an electric curtain.

Background

The existing curtain is generally composed of curtain cloth, an upper curtain rod, a lower curtain rod, a rolling curtain pipe, a rope component and the like, wherein the opening and closing of the curtain are controlled by pulling the rope, the upper end of the curtain is fixedly arranged on a wall body, and the lower end of the curtain is controlled to ascend or descend by pulling the rope.

At present, most curtains are not provided with a limiting structure, and are usually stopped automatically by closing power supply equipment, so that the stopping position is not accurate due to inertia under the condition; in addition, although a small number of curtains have a limit structure, thereby its limit structure is many to be spacing through the motion of the taut rope control (window) curtain of ropewinder, it is spacing promptly mainly to carry out through injecing the rope, so great to the wearing and tearing of rope, can influence the life of rope, and to the (window) curtain of a plurality of curtains stopper all independent separately, all be the unipolar setting, can't play the effect of mutual restriction stroke, a plurality of curtains are drawing the operation each other, cause the chaos of arranging the rope of day night curtain product very easily like this, the product breaks down.

SUMMERY OF THE UTILITY MODEL

The utility model provides a stop device and electronic (window) curtain of (window) curtain, the tensile length of control (window) curtain that can be more accurate, and limit structure interlocking linkage operation can reduce the rope arrangement confusion.

The application discloses a limiting device of a curtain, wherein the curtain comprises a first driving shaft, a second driving shaft, a driving device and a limiting device, wherein the second driving shaft and the first driving shaft are arranged in parallel; the driving device independently drives the corresponding first driving shaft and/or the second driving shaft; the limiting device is connected with the driving device; the limiting device comprises a first limiting structure and a second limiting structure, and the first limiting structure is connected with the first driving shaft; the second limiting structure is connected with the second limiting structure; wherein the sum of the length of the first limit structure along one end of the second limit structure and the length of the second limit structure along one end of the first limit structure is the distance between the first drive shaft and the second drive shaft.

Optionally, the limiting device comprises a limiting main body, and the first limiting structure and the second limiting structure are arranged on the limiting main body in parallel; the first limiting structure comprises a first limiting screw and a first limiting nut; the second limiting structure comprises a second limiting screw and a second limiting nut; the sum of the distance between the inner wall of the first limiting nut and the outer wall of the first limiting nut and the distance between the inner wall of the second limiting nut and the outer wall of the second limiting nut is larger than the distance between the first limiting screw and the second limiting screw.

Optionally, the first driving shaft and the second driving shaft are square shafts or cylindrical shafts, and the first driving shaft and the second driving shaft penetrate through the first limiting screw and the second limiting screw.

Optionally, the first limit screw penetrates through the first limit nut, and the first limit nut includes a first circular ring structure, a first prism structure and a second prism structure; the first prism structure and the second prism structure are respectively provided with two sides of a first limiting screw rod and fixed with the first circular ring structure; the second limiting screw penetrates through the second limiting nut, and the second limiting nut comprises a second circular ring structure, a third prism structure and a fourth prism structure; the third prism structure and the fourth prism structure are respectively provided with two sides of a second limiting screw and fixed with the second circular ring structure.

Optionally, the first limit screw and the second limit screw are equal in length and are arranged side by side, and edges of two ends of the first limit screw and edges of two ends of the corresponding second limit screw are on the same straight line.

Optionally, the drive arrangement includes dual output motor, the (window) curtain device still includes transformer or battery, the transformer or the battery with dual output motor sets up relatively, is located the other end of drive shaft, the transformer or the battery with dual output motor electricity is connected, dual output motor drives respectively first drive shaft with the second drive shaft is in order to drive first stop nut and second stop nut's removal.

Optionally, the driving device includes two hand pulling mechanisms disposed at two ends of the first driving shaft and the second driving shaft, and the two hand pulling mechanisms respectively drive the first driving shaft and the second driving shaft.

Optionally, the window covering includes a first rail, a second rail, and a transmission structure, the transmission structure connects the first drive shaft and the first rail or the second drive shaft and the second rail, respectively; the transmission structure comprises a first rope winder and a second rope winder, and the first rope winder and the second rope winder are respectively arranged on the first driving shaft and the second driving shaft in parallel; the first track is arranged below the first driving shaft and/or the second driving shaft; the second track is arranged below the first track; the transmission structure is respectively connected with the first driving shaft and the first track or the second driving shaft and the second track; the transmission structure further comprises a first winding and unwinding rope and a second winding and unwinding rope, the first winding and unwinding rope is respectively connected with the first rope winder and the first rail, and the second winding and unwinding rope is respectively connected with the second rope winder and the second rail; the first rope reeling and unreeling device and the second rope reeling and unreeling device are at least provided with two ropes and are respectively and correspondingly connected to two ends of the first rope reeling device and the first rail and two ends of the second rope reeling device and two ends of the second rail; the two first rope winders and the two second rope winders are respectively arranged in parallel, the two first rope winders and the two second rope winders are connected with the two corresponding first rope winders, and the two second rope winders are connected with the two corresponding second rope winders; the first limiting structure is placed between the two first rope winders; the second limiting structure is placed between the two second rope winders; the first driving shaft penetrates through a first limiting screw rod of the first limiting structure, and two ends of the first driving shaft are respectively connected with the two first rope winders; the second driving shaft penetrates through a second limiting screw rod of the second limiting structure, and two ends of the second driving shaft are respectively connected with the two second rope winders; the first rail comprises two first through holes, and the two first retractable ropes penetrate through the two corresponding first through holes and are knotted at the corresponding first through holes respectively; the second track comprises two second through holes, and the two second retractable ropes penetrate through the corresponding two first through holes and the second through holes and are knotted at the corresponding second through holes respectively.

Optionally, one end of the first rope winder is provided with a first rope threading opening and a first rope arranging member, and the other end of the first rope winder is provided with a first fixing member; one end of the first rope reeling and unreeling device is fixedly connected with the first fixing piece, and the other end of the first rope reeling and unreeling device is wound around the first rope reeling device and clings to the first rope arranging piece to penetrate through the first rope penetrating opening; the first rope arranging piece is used for controlling the wound first rope reeling and unreeling piece to move towards the first fixing piece; one end of the second rope winder is provided with a second rope threading opening and a second rope arranging piece, and the other end of the second rope winder is provided with a second fixing piece; one end of the second rope reeling and unreeling device is fixedly connected with the second fixing piece, and the other end of the second rope reeling and unreeling device is wound around the second rope reeling device and clings to the second rope arrangement piece so as to penetrate through the second rope penetrating opening; the second rope arranging piece is used for controlling the wound second winding and unwinding rope to move towards the second fixing piece; the driving device respectively and independently drives the first driving shaft and the second driving shaft to rotate so as to drive the first rope winder to rotate to control the first rope winding and unwinding device to wind and unwind the first rope and/or drive the second rope winder to rotate to control the second rope winding and unwinding device to wind and unwind the second rope.

The application also discloses a motorized window treatment, which comprises the limiting device of the window treatment.

The curtain drawing control device is characterized in that a limiting structure connected with a driving device is arranged to control the curtain drawing, the first limiting structure is arranged along the distance between a first driving shaft and a second driving shaft between the first limiting structure and the second limiting structure along the sum of the length of one end of the second limiting structure and the length of one end of the second limiting structure along the first limiting structure, different driving shafts control the opening of different curtains, when the first driving shaft stops rotating, if the second driving shaft rotates, the second limiting structure abuts against the first limiting structure, the second driving shaft stops rotating, the first limiting structure and the second limiting structure limit each other, and the first limiting structure and the second limiting structure operate in an interlocking linkage mode, so that the limitation on the stroke of different curtains is achieved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a schematic block diagram of a window covering according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a stop structure according to another embodiment of the present application;

FIG. 3 is a schematic view of a stop device and drive shaft and cord winder of an embodiment of the present application;

FIG. 4 is a schematic view of a cord winder according to an embodiment of the present application;

FIG. 5 is a schematic view of a window covering construction module according to another embodiment of the present application;

fig. 6 is an exploded view of a curtain structure according to another embodiment of the present application.

100, a curtain; 110. a first drive shaft; 120. a second drive shaft; 130. a drive device; 131. a dual output motor; 140. a limiting device; 141. a first limit structure; 142. A second limit structure; 143. a limiting main body; 145. a first limit screw; 146. a first limit nut; 1461. a first annular ring structure; 1462. a first prism structure; 147. a second limit screw; 148. a second limit nut; 1481. a second annular ring structure; 1482. a second prism structure; 150. a first track; 151. a first through hole; 160. a second track; 161. a second through hole; 170. a transmission structure; 171. a first cord winder; 172. a second rope winder; 173. A first stringing hole; 174. a first rope arrangement member; 175. a first fixing member; 176. a second stringing hole; 177. a second row of rope elements; 178. a second fixing member; 179. a first reeling and unreeling rope; 180. A second rope is reeled and unreeled; 181. a rope alignment retention structure; 190. a cover plate; 200. a sun curtain; 210. and (5) night curtains.

Detailed Description

It is to be understood that the terminology, the specific structural and functional details disclosed herein are for the purpose of describing particular embodiments only, and are representative, but that the present application may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.

In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as implicitly indicating the number of technical features indicated. Thus, unless otherwise specified, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "plurality" means two or more. The terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that one or more other features, integers, steps, operations, elements, components, and/or combinations thereof may be present or added.

Further, terms of orientation or positional relationship indicated by "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, are described based on the orientation or relative positional relationship shown in the drawings, are simply for convenience of description of the present application, and do not indicate that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.

Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, fixed connections, removable connections, and integral connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The present application will now be described in detail with reference to the drawings and alternative embodiments, it being understood that any combination of the various embodiments or technical features described below may form new embodiments without conflict.

As shown in fig. 1, as an embodiment of the present application, a position-limiting device 140 of a window covering is disclosed, the window covering includes a first driving shaft 110, a second driving shaft 120, a driving device 130 and the position-limiting device 140, the second driving shaft 120 is arranged in parallel with the first driving shaft 110; the driving device 130 independently drives the corresponding first driving shaft 110 and/or the second driving shaft 120; the limiting device 140 is connected with the driving device 130; the limiting device 140 comprises a first limiting structure 141 and a second limiting structure 142, wherein the first limiting structure 141 is connected with the first driving shaft 110; the second limiting structure 142 is connected with the second limiting structure 142; wherein the sum of the length of the first stopper structure 141 along the end of the second stopper structure 142 and the length of the second stopper structure 142 along the end of the first stopper structure 141 is the distance between the first drive shaft 110 and the second drive shaft 120.

The first driving shaft 110 drives the first limiting structure 141 to rotate, the second driving shaft 120 drives the second limiting structure 142 to rotate, when the first limiting structure 141 stops rotating, the second driving shaft 120 continues rotating to drive the second limiting structure 142 to continue rotating, when the second limiting structure 142 abuts against the first limiting structure 141, a mutual restriction force exists, so that the first limiting structure 141 and the second limiting structure 142 both stop moving, correspondingly, if the first driving shaft 110 and the second driving shaft 120 correspond to different curtain fabrics for controlling the curtain, contraction strokes of the curtain fabrics can be restricted mutually, so that the opening degrees of the different curtain fabrics can be controlled more accurately, the first limiting structure 141 and the second limiting structure 142 are in interlocking linkage operation, no rope arrangement disorder occurs, the service life of the curtain is long, and the curtain is not easy to damage.

Further, as shown in fig. 2, the limiting device 140 includes a limiting main body 143, and the first limiting structure 141 and the second limiting structure 142 are arranged on the limiting main body 143 in parallel; the first limit structure 141 comprises a first limit screw 145 and a first limit nut 146; the second limit structure 142 comprises a second limit screw 147 and a second limit nut 148; wherein the sum of the distance between the inner wall of the first limit nut 146 and the outer wall of the first limit nut 146 and the distance between the inner wall of the second limit nut 148 and the outer wall of the second limit nut 148 is greater than the distance between the first limit screw 145 and the second limit screw 147; the first driving shaft 110 and the second driving shaft 120 are square shafts, and the first driving shaft 110 and the second driving shaft 120 penetrate the first limit screw 145 and the second limit screw 147.

The screw centers of a first limit screw 145 and a second limit screw 147 in the limiting device 140 are inserted with a square shaft, the corresponding square shafts are the first driving shaft 110 and the second driving shaft 120, the square shaft rotates to drive the first limit screw 145 and the second limit screw 147 to rotate independently respectively, a first limit nut 146 on the first limit screw 145 and a second limit nut 148 on the second limit screw 147 can move left and right due to the rotation of the first limit screw 145 and the second limit screw 147, the thread lengths of the first limit screw 145 and the second limit screw 147 respectively determine the stroke dead points of the first limit nut 146 and the second limit nut 148, and when the first limit nut 146 or the second limit nut 148 cannot move, the corresponding square shaft is prevented from rotating.

Generally, the first limit nut 146 and the second limit nut 148 of the limit device 140 are both arranged at the end of one end thread and can not move any more; the first limit screw 145 and the second limit screw 147 of the limit device 140 are respectively and independently responsible for the travel of the day curtain 200 and the night curtain 210, when the first limit nut 146 is located at a certain middle position of the first limit screw 145, one moving direction of the second limit nut 148 can be prevented by the first limit nut 146 and cannot move, so that the day curtain 200 is prevented from being continuously opened, and correspondingly, the position of the day curtain 200 can also prevent the night curtain 210 from being continuously closed, so that the purpose of limiting the respective travel of the day curtain 200 and the night curtain 210 is achieved, the curtain can be integrally opened or closed, switching among different curtains can be realized, collision positions with overlapped shapes of two nuts can be formed, and when one nut is contacted with the other nut, the other nut can be blocked and cannot move.

The first limit screw 145 and the second limit screw 147 are equal in length and are arranged side by side, and the edges of the two ends of the first limit screw 145 and the corresponding edges of the two ends of the second limit screw 147 are arranged in parallel and obliquely upward on the same straight line, so that the first drive shaft 110 and the second drive shaft 120 can be better matched in rotation.

As another embodiment of the present application, the first limit screw 145 penetrates the first limit nut 146, and the first limit nut 146 includes a first circular ring structure 1461, a first prism structure 1462, and a second prism structure 1482; the first prism structure 1462 and the second prism structure 1482 are respectively arranged on two sides of the first limit screw 145 and fixed with the first ring structure 1461; the second limit screw 147 penetrates through the second limit nut 148, and the second limit nut 148 comprises a second circular ring structure 1481, a third prism structure and a fourth prism structure; the third prism structure and the fourth prism structure are respectively provided with two sides of a second limit screw 147 and fixed with the second ring structure 1481. Through setting for specific nut structure, the contact that can the butt is bigger, has better restriction effect, and at the in-process of dismantling, snatchs the nut more easily and demolishs the nut from the screw rod.

Of course, the number of the driving shafts may be multiple, the corresponding limiting devices 140 may also be multiple, and two of the limiting devices may be in a group, each limiting structure corresponds to each driving shaft, and the corresponding driving device 130 may control the corresponding driving shaft to rotate through a clutch mode, so that the third track, even the fourth track, the fifth track, and the like may be sequentially disposed below the second track 160, so that as long as the driving device 130 is independently driven, the whole curtain may be pulled open or closed, and the switching between different curtains may also be achieved.

As shown in fig. 2 to 6, the driving device 130 includes a dual output motor 131, the window curtain device further includes a transformer or a battery, the transformer or the battery is disposed opposite to the dual output motor 131 and located at the other end of the driving shaft, the transformer or the battery is electrically connected to the dual output motor 131, the dual output motor 131 respectively drives the first driving shaft 110 and the second driving shaft 120 to drive the first limit nut 146 and the second limit nut 148 to move, the transformer or the battery is disposed opposite to the dual output motor 131 and located at the other end of the driving shaft, the transformer or the battery is electrically connected to the dual output motor 131 respectively, a bi-directional output motor is disposed at one end of the driving shaft, a transformer or a battery is disposed at the other end, and the battery is disposed in a battery box to be corroded and damaged by the outside, the battery box or the transformer is placed in the other fixed cover body, the end cover is arranged on the periphery of the fixed cover body, the width of the end cover part is 1mm larger than that of the track, and when the curtain device works, the battery can directly supply power to the double-output motor 131 so that the curtain device can normally work, wherein the battery can be charged, and when the battery is used up, the battery can be detached for charging; of course, the dual-output motor 131 may be powered by a battery, or the dual-output motor 131 may be powered by an external transformer, where it should be noted that the transformer is a 220V direct plug, and the power supply mode may be switched according to a specific use scenario.

The window covering includes a transmission structure 170, the transmission structure 170 being connected to the first drive shaft 110 and the first track 150 or the second drive shaft 120 and the second track 160, respectively; the transmission structure 170 includes a first rope winder 171 and a second rope winder 172, and the first rope winder 171 and the second rope winder 172 are respectively juxtaposed on the first driving shaft 110 and the second driving shaft 120.

Further, the window covering includes a first track 150 and a second track 160, the first track 150 is disposed below the first driving shaft 110 and/or the second driving shaft 120; the second rail 160 is disposed below the first rail 150; the transmission structure 170 connects the first driving shaft 110 and the first rail 150 or the second driving shaft 120 and the second rail 160, respectively; the transmission structure 170 further comprises a first reeling and unreeling rope 179 and a second reeling and unreeling rope 180, the first reeling and unreeling rope 179 is respectively connected with the first rope winder 171 and the first rail 150, and the second reeling and unreeling rope 180 is respectively connected with the second rope winder 172 and the second rail 160; the rope winder does not know when to stop rotating without the stop device 140, and can rewind even if the rope has been completely unwound, and the stop device 140 is to prevent the rope winder from rewinding the rope.

Generally, the first reeling and unreeling rope 179 and the second reeling and unreeling rope 180 are provided with at least two ropes and are respectively connected to two ends of the first rope winder 171 and the first rail 150, the second rope winder 172 and the second rail 160; two first rope winders 171 and two second rope winders 172 are provided, the two first rope winders 171 and the two second rope winders 172 are respectively arranged in parallel, the two first winding and unwinding ropes 179 are connected with the two corresponding first rope winders 171, and the two second winding and unwinding ropes 180 are connected with the two corresponding second rope winders 172; the first limiting structure 141 is placed between the two first rope winders 171; the second limiting structure 142 is placed between the two second rope winders 172; the first driving shaft 110 penetrates through the first limiting screw 145 of the first limiting structure 141, and two ends of the first driving shaft 110 are respectively connected with the two first rope winders 171; the second driving shaft 120 penetrates through the second limiting screw 147 of the second limiting structure 142, and two ends of the second driving shaft 120 are respectively connected with the two second rope winders 172; the first rail 150 comprises two first through holes 151, two first retracting ropes 179 penetrate through the two corresponding first through holes 151, and are tied off at the corresponding first through holes 151 respectively; the second rail 160 includes two second through holes 161, two second through holes 161 are provided, and two second retractable cords 180 pass through the two corresponding first through holes 151 and second through holes 161 and are tied at the corresponding second through holes 161.

A first threading opening and a first rope discharging piece 174 are arranged at one end of the first rope winder 171, and a first fixing piece 175 is arranged at the other end of the first rope winder 171; one end of the first reeling and unreeling rope 179 is fixedly connected with the first fixing member 175, and the other end of the first reeling and unreeling rope 179 is wound around the first rope winder 171 to be tightly attached to the first rope discharging member 174 so as to pass through the first rope threading opening; the first rope-discharging member 174 is used for controlling the movement of the wound first rope 179 towards the first fixing member 175; one end of the second rope winder 172 is provided with a second rope threading opening and a second rope arranging member 177, and the other end of the second rope winder 172 is provided with a second fixing member 178; one end of the second reeling and unreeling rope 180 is fixedly connected with the second fixing member 178, and the other end of the second reeling and unreeling rope 180 is wound around the second rope winder 172 and clings to the second rope arranging member 177 to pass through the second rope passing opening; the second rope arrangement member 177 is used for controlling the second wound rope 180 to move towards the second fixing member 178; the first driving shaft 110 and the second driving shaft 120 respectively and independently driven by the driving device 130 rotate to drive the first rope winder 171 to rotate to control the winding and unwinding of the first winding and unwinding rope 171 and/or the second rope winder 172 to rotate to control the winding and unwinding of the second winding and unwinding rope 180.

As another embodiment of the present application, the driving device 130 includes two hand pulling mechanisms (not shown in the figure) disposed at two ends of the first driving shaft 110 and the second driving shaft 120, the two hand pulling mechanisms respectively drive the first driving shaft 110 and the second driving shaft 120, and the limiting device is a component for limiting the curtain stroke on the manual day and night curtain, and is disposed in the middle of the first rope winder and the second rope winder.

As another embodiment of the present application, as shown in fig. 3 to 6, a day and night curtain 210 device is disclosed, which comprises a window curtain stopper 140, a day curtain 200 and a night curtain 210 as in any of the above embodiments, wherein the day curtain 200 and the night curtain 210 are cellular curtains, although other shapes of curtains are also possible, the transmission structure 170 is driven by the rotation of the driving shaft to control the lifting and lowering of the first rail 150 and/or the second rail 160, so as to control the contraction or expansion of the day curtain 200 and the night curtain 210, so as to block light of different periods, wherein the day curtain 200 is placed between the driving shaft and the first rail 150, one end of two first retraction ropes 179 is respectively fixed on the two first rope rolling devices 171, and the other end of the two first retraction ropes passes through a through hole on the day curtain 200 to fix the day curtain 200, passes through the first rail 150, and then the other end is tied at the first rail 150, the night curtain 210 is placed between the first rail 150 and the second rail 160, one end of each of the two second retraction cords 180 is fixed to the two second cord winders 172, and the other end of each of the two second retraction cords 180 passes through the through holes of the first rail 150 and the night curtain 210 to fix the night curtain 210, and then passes through the second rail 160, at which time the other end of each of the two second retraction cords 180 is knotted at the second rail 160.

Specifically, when the bidirectional output motor works, the bidirectional output motor can respectively control the rotation of the first output shaft and the second output shaft, if the sun blind 200 is used alone, the first rope winder 171 rotates to stretch the first rope 179, the first rail 150 descends, and the sun blind 200 is stretched at the same time, at this time, the second rope winder 172 does not rotate; in addition, if the night curtain 210 is used alone, the second rope winder 172 rotates to stretch the second retraction rope 180, the second rail 160 descends, and the night curtain 210 is extended at the same time, at this time, the second rope winder 172 does not rotate; of course, the first and

second rope winders

171 and 172 rotate simultaneously to stretch the first and

second retraction ropes

179 and 180, the first and

second rails

150 and 160 descend and increase the distance therebetween, and at this time, the day curtain 200 and the night curtain 210 are simultaneously stretched, and when the total length of the stretched day curtain 200 and the stretched night curtain 210 is equal to the length of the window covering, the stretching of the second retraction rope 180 is stopped.

In addition, square shafts are inserted into the centers of the first rope winder 171 and the second rope winder 172, wherein the square shafts mainly comprise the first driving shaft 110 and the second driving shaft 120, the square shafts are driven by a motor to drive the rope winding drums to rotate, each rope is independently connected with the day curtain 200 or the night curtain 210, and the ropes are wound and unwound so as to pull up or release the day curtain 200 or the night curtain 210. When the serving drum is rotatory, the rope can be according to the direction motion that corresponds, with the orderly range of rope on the serving drum under the intervention of calandria, the rope of arranging is received the extrusion of arranging the rope and keeping the position, wholly remove to the direction that corresponds gradually, make the orderly winding of rope arrange on the serving drum, when serving drum reverse rotation, the rope loosens gradually, thereby reach orderly roll up or relax the purpose of rope, the effect of serving drum apron 190 is that the activity space size of restriction rope can paste all the time on the reel when making the rope receive the impact force, prevent the phenomenon of rope overlap to take place.

Besides, the rope can not be wound, a limit structure is added between the two first rope winders 171 and the two second rope winders 172, after the power supply equipment of the curtain is disconnected or the contraction of the curtain is stopped, the first limit nut 146 on the first limit screw 145 and the second limit nut 148 on the second limit screw 147 can move left and right due to the rotation of the first limit screw 145 and the second limit screw 147, the thread lengths of the first limit screw 145 and the second limit screw 147 respectively determine the stroke stop points of the first limit nut 146 and the second limit nut 148, and when the first limit nut 146 or the second limit nut 148 cannot move, the corresponding square shaft is prevented from rotating.

Of course, the above-mentioned dual-output motor can also be replaced by a hand-pulling mechanism, when the hand-pulling mechanisms corresponding to the first driving shaft and the second driving shaft are not started, the first limit nut and the second limit nut are both at the ends of the threads at the same end of the first limit screw and the second limit screw, and can not move any more; the specific work is described as follows, in the horizontal direction, the first limit nut and the second limit nut are both arranged at the leftmost sides of the first limit screw and the second limit screw, at this time, the day curtain and the night curtain are in a fully closed state, the first limit nut and the second limit nut are both arranged at the rightmost sides of the first limit screw and the second limit screw, at this time, the day curtain and the night curtain are in a fully opened state, when the hand pulling mechanism carries out hand pulling movement, the corresponding limit screw is responsible for the formation of the day curtain and the night curtain, when the first limit nut of the corresponding night curtain is positioned at a certain middle position of the first limit screw, the second limit nut corresponding to the sun curtain can be prevented from moving by the first limit nut and can not move, therefore, the sun curtain is prevented from being opened continuously, and the night curtain is prevented from being closed continuously by the position of the sun curtain, so that the aim of limiting the respective strokes of the sun curtain and the night curtain is fulfilled.

As another embodiment of the present application, a motorized window treatment is disclosed that includes a stop device as in any of the above embodiments.

The foregoing is a more detailed description of the present application in connection with specific alternative embodiments, and the specific implementations of the present application are not to be considered limited to these descriptions. For those skilled in the art to which the present application pertains, several simple deductions or substitutions may be made without departing from the concept of the present application, and all should be considered as belonging to the protection scope of the present application.

Claims

1. A window covering stop device, characterized in that, the window covering includes:

a first drive shaft;

a second drive shaft arranged in parallel with the first drive shaft;

a driving device for independently driving the corresponding first driving shaft and/or the second driving shaft; and

the limiting device is connected with the driving device;

the stop device includes:

the first limiting structure is connected with the first driving shaft; and

the second limiting structure is connected with the second limiting structure;

wherein the sum of the length of the first limit structure along one end of the second limit structure and the length of the second limit structure along one end of the first limit structure is the distance between the first drive shaft and the second drive shaft.

2. The window covering limiting device of claim 1, wherein the limiting device comprises a limiting body, and the first limiting structure and the second limiting structure are arranged on the limiting body in parallel;

the first limiting structure comprises a first limiting screw and a first limiting nut;

the second limiting structure comprises a second limiting screw and a second limiting nut;

the sum of the distance between the inner wall of the first limiting nut and the outer wall of the first limiting nut and the distance between the inner wall of the second limiting nut and the outer wall of the second limiting nut is larger than the distance between the first limiting screw and the second limiting screw.

3. The window covering stop device of claim 2, wherein said first drive shaft and said second drive shaft are square or cylindrical shafts, and said first drive shaft and said second drive shaft extend through said first stop screw and said second stop screw.

4. The window covering limiting device of claim 2, wherein the first limiting screw penetrates through the first limiting nut, and the first limiting nut comprises a first circular ring structure, a first prism structure and a second prism structure; the first prism structure and the second prism structure are respectively provided with two sides of a first limiting screw rod and fixed with the first circular ring structure;

the second limiting screw penetrates through the second limiting nut, and the second limiting nut comprises a second circular ring structure, a third prism structure and a fourth prism structure; the third prism structure and the fourth prism structure are respectively provided with two sides of a second limiting screw and fixed with the second circular ring structure.

5. The window curtain limiting device as claimed in claim 3, wherein the first limiting screw and the second limiting screw have the same length and are disposed side by side, and edges of both ends of the first limiting screw and corresponding edges of both ends of the second limiting screw are on the same straight line.

6. The window covering limiting device of claim 5, wherein the driving device comprises a dual-output motor, the window covering further comprises a transformer or a battery, the transformer or the battery is disposed opposite to the dual-output motor and located at the other end of the driving shaft, the transformer or the battery is electrically connected to the dual-output motor, and the dual-output motor drives the first driving shaft and the second driving shaft respectively to drive the first limiting nut and the second limiting nut to move.

7. The window covering limiting device of claim 5, wherein the driving device comprises two hand pulling mechanisms disposed at two ends of the first driving shaft and the second driving shaft, and the two hand pulling mechanisms respectively drive the first driving shaft and the second driving shaft.

8. A blind stop arrangement according to claim 6 or claim 7, wherein the blind includes:

a first track disposed below the first and/or second drive shaft;

a second rail disposed below the first rail; and

a transmission structure connecting the first drive shaft and the first track or the second drive shaft and the second track, respectively; the transmission structure comprises a first rope winder and a second rope winder, and the first rope winder and the second rope winder are respectively arranged on the first driving shaft and the second driving shaft in parallel;

the transmission structure further comprises a first winding and unwinding rope and a second winding and unwinding rope, the first winding and unwinding rope is respectively connected with the first rope winder and the first rail, and the second winding and unwinding rope is respectively connected with the second rope winder and the second rail;

the first rope reeling and unreeling device and the second rope reeling and unreeling device are at least provided with two ropes and are respectively and correspondingly connected to two ends of the first rope reeling device and the first rail and two ends of the second rope reeling device and two ends of the second rail;

the two first rope winders and the two second rope winders are respectively arranged in parallel, the two first rope winders and the two second rope winders are connected with the two corresponding first rope winders, and the two second rope winders are connected with the two corresponding second rope winders;

the first limiting structure is placed between the two first rope winders; the second limiting structure is placed between the two second rope winders;

the first driving shaft penetrates through a first limiting screw rod of the first limiting structure, and two ends of the first driving shaft are respectively connected with the two first rope winders; the second driving shaft penetrates through a second limiting screw rod of the second limiting structure, and two ends of the second driving shaft are respectively connected with the two second rope winders;

the first rail comprises two first through holes, and the two first retractable ropes penetrate through the two corresponding first through holes and are knotted at the corresponding first through holes respectively;

the second track comprises two second through holes, and the two second retractable ropes penetrate through the corresponding two first through holes and the second through holes and are knotted at the corresponding second through holes respectively.

9. The window covering limiting device of claim 8, wherein one end of the first rope winder is provided with a first rope threading opening and a first rope discharging member, and the other end of the first rope winder is provided with a first fixing member;

one end of the first rope reeling and unreeling device is fixedly connected with the first fixing piece, and the other end of the first rope reeling and unreeling device is wound around the first rope reeling device and clings to the first rope arranging piece to penetrate through the first rope penetrating opening;

the first rope arranging piece is used for controlling the wound first rope reeling and unreeling piece to move towards the first fixing piece;

one end of the second rope winder is provided with a second rope threading opening and a second rope arranging piece, and the other end of the second rope winder is provided with a second fixing piece;

one end of the second rope reeling and unreeling device is fixedly connected with the second fixing piece, and the other end of the second rope reeling and unreeling device is wound around the second rope reeling device and clings to the second rope arrangement piece so as to penetrate through the second rope penetrating opening;

the second rope arranging piece is used for controlling the wound second winding and unwinding rope to move towards the second fixing piece;

the driving device respectively and independently drives the first driving shaft and the second driving shaft to rotate so as to drive the first rope winder to rotate to control the first rope winding and unwinding device to wind and unwind the first rope and/or drive the second rope winder to rotate to control the second rope winding and unwinding device to wind and unwind the second rope.

10. A motorized window treatment comprising a window treatment stop according to any one of claims 1 to 9.