CN220898443U - Electric curtain control device - Google Patents

Abstract

The utility model relates to an electric curtain control device which comprises a shell and a bracket arranged in the shell, wherein a driving wheel and a driven wheel which are arranged in parallel and axially in the same direction are arranged on the bracket, an opening is formed in the upper end of the shell to expose the driving wheel and the driven wheel, the bracket can move up and down along the shell so as to further enable the driving wheel and the driven wheel to expose a pressed curtain rail from the opening, the driving wheel rotates around the axial direction of the driving wheel under the driving of a driving motor and moves along the curtain rail so as to drive the driven wheel to synchronously move, an elastic piece is arranged below the driven wheel and is used for giving upward force to the driven wheel, and/or an outer ring of the driven wheel is made of elastic materials. The electric curtain control device not only can automatically or manually open and close the curtain, but also can downwards offset the inclination of the driven wheel when the driving wheel is downwards inclined due to uneven stress, so that the driving wheel is prevented from slipping due to the inclination, and the movement is more stable.

Description

Electric curtain control device

Technical Field

The utility model relates to the field of intelligent home, in particular to a control device for an electric curtain.

Background

Many existing household curtains are still manual mainly, including track, hanging wheel and curtain cloth, and the consumer pulls the curtain by hand and makes it follow the track and remove, laborious and easily breaks the hanging wheel. For this reason, there are also electric curtains that can automatically move the curtain, thereby solving the above-mentioned problems.

However, most of the current electric curtains are only suitable for new installation, a brand new track and a brand new curtain structure are needed, and certain structures cannot be reserved on the original manual curtain for improvement, so that the replacement cost is high. Therefore, the manual curtain can be modified by adding a control device at present, but most of control devices have no stroke detection function or clutch device, can only stop running or operate or stop by remote app when encountering an obstacle, or cannot be started by hand, and the functions are inconvenient.

Disclosure of utility model

The utility model aims to solve the technical problem of providing an electric curtain control device capable of stably and automatically moving along a track, and preventing one side of the electric curtain control device from tilting downwards due to uneven stress.

The utility model solves the technical problems by the following technical scheme: the electric curtain control device comprises a shell and a bracket arranged in the shell, wherein the bracket is provided with a driving wheel and a driven wheel which are arranged in parallel and axially in the same direction, and an opening is formed in the upper end of the shell to expose the driving wheel and the driven wheel; and/or the outer ring of the driven wheel is made of elastic materials.

Preferably, a lifting motor is further arranged in the shell and used for driving the support to move up and down.

Preferably, a transmission mechanism is arranged between the driving wheel and the driving motor, a clutch device is arranged between the output end of the transmission mechanism and the driving wheel, and the clutch device is used for transmitting the rotation of the driving motor to the driving wheel and keeping the separation of the rotation transmission of the driving wheel to the direction of the transmission mechanism.

Preferably, the driving wheel comprises a shell and an inner shell which are coaxially sleeved outside and synchronously rotated, one end of the inner shell is exposed out of the shell and is provided with a shaft, the other end of the inner shell is provided with a cavity, the clutch device comprises a cam, the first end of the cam is positioned in the cavity and is provided with a convex block, the convex block divides the cavity into two areas, each area is internally provided with a steel ball, a concave hole matched with the steel ball is formed in the inner peripheral wall of the cavity, the second end of the cam is connected with a final gear of the transmission mechanism and synchronously rotates, and when the steel balls fall into the concave holes, the cam is clamped from two sides, so that the cam and the inner shell synchronously rotate.

Preferably, a retainer ring is further arranged on the outer side of the cavity, the first end of the cam is sealed in the cavity, and an opening is formed in the center of the retainer ring for the second end of the cam to extend out.

Preferably, a bearing is arranged on the shaft to support the rotation of the driving wheel, and a large bearing is also arranged between the retainer ring and the inner shell to support the rotation of the driving wheel.

Preferably, the output shaft of the lifting motor is fixedly connected to a threaded rod which is vertically arranged, a matched nut block is sleeved on the outer side of the threaded rod, and the nut block is fixedly connected with the support.

Preferably, the driving wheel outer ring is also provided with an elastic material, and the thickness of the elastic material of the driven wheel outer ring is greater than that of the elastic material of the driving wheel outer ring.

Preferably, the driven wheel is provided with a travel detection device, and the travel detection device comprises a magnet arranged on the driven wheel, a circuit board arranged in the shell and a Hall element which is arranged on the circuit board and matched with the magnet.

Preferably, the projections are fusiform and axisymmetric.

Preferably, the shell is provided with a hook which is detachably connected, and the hook is used for connecting an external connecting piece.

The utility model has the positive progress effects that: this electronic curtain controlling means, through the setting of two wheels, not only can realize opening and closing automatically the (window) curtain to and the function of opening or closing automatically after the manual start-up, moreover when the action wheel is because the uneven slope of atress is downwards, can also counteract the slope downwards from the driving wheel, and then avoid the action wheel to skid because of the slope, the motion is more steady.

Drawings

Fig. 1 is a schematic view of a control device for a motorized window treatment according to an embodiment of the present utility model;

Fig. 2 is a schematic view (with a housing removed) of a control device for a motorized window treatment according to an embodiment of the present utility model;

Fig. 3 is a cross-sectional view of a control device for a motorized window treatment according to an embodiment of the present utility model;

FIG. 4 is a schematic rear view of a motorized window treatment according to an embodiment of the present utility model (with the housing and portions of the brackets removed);

Fig. 5 is a cross-sectional view of a driving wheel of the electric curtain control device according to the embodiment of the present utility model;

Fig. 6 is a cross-sectional view of another direction of a driving wheel of the electric curtain control device according to the embodiment of the present utility model;

Fig. 7 is an exploded view of a driving wheel of the electric curtain control device according to the embodiment of the present utility model.

Detailed Description

The utility model is further illustrated by means of the following examples, which are not intended to limit the scope of the utility model.

As shown in fig. 1, the control device for a motorized window treatment according to the present utility model, as shown in fig. 1, is used in combination with a connector 200 positioned above, the control device 100 is connected to the connector 200, the connector 200 is sleeved on a roman rod, the lower part of the control device 100 is connected to the window treatment, and the control device 100 can move horizontally along the roman rod, thereby pulling the window treatment to open or close along the roman rod. Of course, the control device 100 may be connected to other connecting devices, which may connect the control device to an existing curtain rail and may move horizontally along the rail, and the control device 100 itself may be connected to the curtain, so as to drive the curtain to open and close. The curtain and the curtain rail are all existing curtains and rails, so that the curtain can be automatically opened and closed only by slightly modifying the existing curtains and rails.

The control device comprises a shell 10 and a rolling wheel arranged in the shell 10, wherein the rolling wheel comprises a driving wheel 1 and a driven wheel 2, the driving wheel 1 and the driven wheel 2 are arranged on a bracket 3 at the same height, and a lifting motor 20 for driving the bracket 3 to move up and down and a driving motor 30 for driving the driving wheel to rotate are also arranged in the shell 10. The driving motor is also arranged on the bracket 3, and the lifting motor 20 can drive the bracket 3 to move up and down, so as to drive the driving wheel 1, the driven wheel 2 and the driving motor 30 on the bracket 3 to move up and down together. The driven wheel 2 and the driving wheel 1 are arranged on the top of the bracket 3, are axially and transversely supported on the bracket 3 and can rotate around the respective axial directions, and the driving wheel 1 and the driven wheel 2 are axially and equidirectionally arranged, for example, as shown in fig. 1 and 2, the axial directions of the driving wheel 1 and the driven wheel 2 are perpendicular to the extending direction of the curtain rail, namely the moving direction of the control device, and the axial directions of the driving wheel 1 and the driven wheel 2 are parallel and are arranged in parallel along the extending direction of the curtain rail, namely the moving direction of the control device at intervals; alternatively, the axial directions of the driving wheel 1 and the driven wheel 2 may be perpendicular to the extending direction of the curtain rail, that is, the moving direction of the control device, and the two wheels may be arranged side by side along the width direction of the curtain rail, and in the moving direction of the control device, the axial directions of the driving wheel 1 and the driven wheel 2 may be staggered and juxtaposed or may overlap. The upper part of the shell 10 is provided with an opening 40, the driving wheel 1 and the driven wheel 2 are exposed, the support 3 can move upwards under the drive of the lifting motor 20, the driving wheel 1 and the driven wheel 2 move upwards from the opening 40 of the shell 10 to be tightly attached to a track, and then under the drive of the driving motor 30, the driving wheel 1 rotates, so that the whole control device can move along a curtain track, and meanwhile, the driving wheel 1 and the control device 100 horizontally move along the track to drive the driven wheel 2 to rotate along the track. The axial directions of the driving wheel 1 and the driven wheel 2 are perpendicular to the up-and-down movement direction of the bracket 3 and the extending direction of the curtain rail, namely the movement direction of the control device. In order to ensure that the driving wheel 1 can synchronously drive the driven wheel 2 to rotate simultaneously when driving the control device 100 to move, the diameters of the driving wheel 1 and the driven wheel are the same. The housing 10 of the control device is further provided with a detachable coupling hook 300, which hook 300 is adapted to be coupled to the coupling member 200, and the detachable hook 300 is adapted to be coupled to coupling members 200 of different sizes and dimensions.

Preferably, as shown in fig. 3, an elastic member 6 is disposed below the driven wheel 2, and/or an outer ring of the driven wheel 2 is made of an elastic material. The elastic member 6 can give an upward force to the driven wheel 2 in a normal state, and the elastic member 6 is compressed in a state where the driven wheel 2 is stressed, and still gives an upward force to the elastic member 6. Because the lower part of the driving wheel 1 is connected with a transmission mechanism and other structures for driving the driving wheel to rotate, and the lower part of the driven wheel is not connected with other parts, the friction force transferred by other equipment is naturally avoided, and therefore, the driven wheel and the driving wheel are unevenly stressed. Preferably, the elastic member 6 is a spring.

In the process of moving the control device, the hole luxury device receives a reaction force because of pushing the curtain to move, the reaction force is not necessarily in a completely horizontal direction to the control device body, a certain oblique angle can be generated, the control device body can slightly incline, and the two contact points of the control device and the lower end face of the track, namely the Roman rod, are respectively a driving wheel and a driven wheel, and the inclination of the control device leads to the separation of the driving wheel from the contact face of the track, so that the driving wheel slips and the driving fails. Therefore, the driven wheel is arranged to be an outer ring made of elastic materials, and/or the spring is arranged below the driven wheel, so that the driven wheel has a allowance for vertical downward movement, and further, when the driving wheel is inclined downward due to uneven stress, the driven wheel can also counteract the inclination downward, so that the driving wheel is prevented from slipping due to the inclination, and the movement of the control device is ensured.

Preferably, the thickness of the elastic material of the outer ring of the driven wheel 2 is greater than or equal to 5mm, and the outer diameters of the driven wheel 2 and the driving wheel 1 are kept consistent. Preferably, the outer ring of the driving wheel 1 is also provided with an elastic material, and the thickness of the elastic material of the outer ring of the driven wheel 2 is greater than that of the outer ring of the driving wheel 1.

Preferably, the elastic material is rubber or soft plastic.

As shown in fig. 2 and 3, the lifting motor 20 is fixedly located in the housing 10, and a battery 50 and a control circuit board 60 are further disposed in the housing 10, for supplying power to the lifting motor 20 and the driving motor 30. The output shaft of the lifting motor 20 is connected to a vertically arranged threaded rod 201, a nut block 202 matched with the threaded rod 201 is sleeved on the outer side of the threaded rod 201, and the nut block 202 is fixedly connected to the bracket 3. The screw rod 201 is driven to rotate around its vertical axis by the lift motor 20, and the nut block 202 and the bracket 3 can be driven to move up and down along the screw rod 201. Thus, the lifting motor 20 can drive the support 3 to move up and down entirely, and it will be understood by those skilled in the art that other transmission mechanisms may be provided between the lifting motor 20 and the drive support 3 to enable the lifting motor 20 to drive the support 3 to move up and down.

A transmission mechanism is arranged between the output shaft of the driving motor 30 and the driving wheel 1, and as shown in fig. 4, the transmission mechanism comprises a plurality of gears meshed with each other, wherein the last final gear 4 is connected to the driving wheel 1, that is, the final gear is an output end of the transmission mechanism, and the output end is connected to the driving wheel. The driving wheel 1 is internally provided with a clutch device, the final gear 4 is connected to the driving wheel 1 through the clutch device, when the final gear 4 drives the driving wheel 1 to rotate, the clutch device is always kept in a combined state, and when the final gear 4 does not rotate, the driving wheel 1 automatically rotates, the clutch device can be kept in a separated state, namely, the active rotation on one side of the driving wheel 1 is not transmitted to the final gear 4. Furthermore, when the motor drives the driving wheel to rotate, the driving wheel can move along the track under the driving of the motor, and then the whole control device can move along the curtain track to drive the curtain to be opened and closed. The clutch device realizes the transmission from the transmission mechanism to the driving wheel 1 on the premise of ensuring the connection between the transmission mechanism and the driving wheel, prevents the driving wheel 1 from transmitting to the transmission mechanism, and further realizes the two functions of manually pulling the curtain and electrically driving the curtain. The clutch device can be arranged in the driving wheel 1 or outside, is used for connecting the output end of the transmission mechanism with the driving wheel and ensuring that the output of the driving motor can be transmitted to the driving wheel, but under the condition that the driving motor stops, the rotation of the driving wheel is not transmitted to the transmission mechanism and the driving wheel.

As shown in fig. 5, 6 and 7, the driving wheel 1 comprises a shell 11 and an inner shell 12, the shell 11 and the inner shell 12 are coaxially arranged, the axial directions of the shell 11 and the inner shell 12 are horizontally arranged, and the shell 11 and the inner shell 12 are fixedly sleeved in an outer sleeve and can synchronously rotate. The inner housing 12 has a shaft 13 provided at one end thereof, one end of the shaft 13 being exposed to the housing 11 and a bearing 15 provided thereon being connected to the bracket 3 such that the driving wheel 1 can rotate about the shaft 13 thereof. The other end of the inner housing 12 is provided with a cavity 14 extending in the axial direction thereof, and the other end of the shaft 13 is positioned in the cavity 14.

The clutch device comprises two steel balls 51 arranged in a cavity 14, and a retainer ring 52 sealing the steel balls 51 in the cavity 14, wherein the center opening of the retainer ring 52 is provided with a first end of a cam 53 which is arranged in the cavity 14 and matched with the steel balls 51, and a second end of the cam 53 extends out of the outer side of the retainer ring 52 through the center opening of the retainer ring 52 and is connected with the final gear 4 through a tooth shape.

As shown in fig. 6, the inner peripheral wall of the cavity 14 of the inner shell 12 is provided with two concave holes 141 matching with the steel balls 51, and the concave holes 141 are symmetrically arranged. The cam 53 is provided at a first end with a projection 531 extending in the radial direction of the capstan 1, the thickness of the projection 531 being matched to the thickness of the cavity 14 and dividing the cavity 14 into a first portion 142 and a second portion 143, and each portion being provided with a steel ball 51. The rotation of the cam 53 can drive the steel balls 51 to rotate in the cavity 14, and when the cam 53 rotates to the concave hole 141, the two groups of steel balls 51 and the concave hole 141 are matched to clamp the cam 53 from two directions respectively, so that the inner shell 12 and the cam 53 are mutually clamped and connected, and the rotation of the cam 53 can drive the inner shell 12 and the shell 11 at the same time, namely, the cam 53 and the driving wheel synchronously rotate. Thus, a transmission from the drive motor to the transmission mechanism to the driving wheel 1 is achieved. When the driving motor is powered down, that is, the final stage gear of the transmission mechanism does not rotate, the driving wheel 1 is driven by external force to rotate, at this time, the shell 11 and the inner shell 12 rotate, and due to the rotation of the inner shell 12, the steel balls 51 can be separated from the concave holes 141 and then fall into the cavity 14, the static state of the cam 53 is not affected, and the rotation of the driving wheel 1 is driven manually, that is, the separation state of the transmission from the driving wheel 1 to the transmission mechanism is realized. Those skilled in the art will appreciate that the clutch device and the mechanism of the driving wheel 1 can refer to the structure of the chinese patent ZL 202023309384.5. As long as unidirectional rotation transmission from the transmission mechanism to the driving wheel 1 is realized, and rotation transmission from the driving wheel 1 to the transmission mechanism is separated. A large bearing 54 is also provided between the axially outer side of the retainer ring 52 and the inner shell 12 to enable rotation of the inner shell 12 and the housing 11 relative to the inner structure. The cam 53 has a protrusion 531 with a shuttle shape, i.e., a thicker middle and narrower ends, and is axisymmetric. Therefore, during the rotation of the cam 53, the steel balls 51 can be driven toward both ends and slid into the concave holes 141 of the inner peripheral wall of the cavity 14 of the inner housing 12. For smoother movement, the part of the shaft 13 located in the cavity 14 is further provided with a protruding shaft 121, and the center of the cam 53 opposite to the protruding shaft 121 is provided with a groove 535, so that the cam 53 and the protruding shaft cooperate with each other, and the cam 53 moves more smoothly when driven by the final gear 4 to rotate around the axial direction, and does not shake in the radial direction.

As shown in fig. 4, the driven wheel 2 is provided with a magnet, the housing 10 is also provided with a circuit board 70 matched with the magnet, the circuit board 70 is provided with a hall element, and the hall element is matched with the magnet, so that a specific stroke and a specific position of the driven wheel, namely, the control device, can be calculated according to a rotation signal generated by the hall element, and whether the driven wheel slips can be judged according to the presence or absence of the rotation signal. Because the driven wheel 2 only rotates along with the horizontal movement of the control device, once slipping or blocking occurs, that is, the rotation signal of the Hall element stops immediately, a signal can be generated to stop the driving motor, and then the accurate stroke position can be calculated. Compared with the original scheme with only one rotating wheel, the Hall element also detects the rotation of the rotating wheel, when the control device moves to the end part of the track and then the rotating wheel does not move along the track any more after meeting the resistance, the control device only idles in situ, and at the moment, the Hall element still has a signal, and whether meeting the resistance can not be judged. At the moment, judging that the friction force of the rotating wheel is increased, judging that the friction force is increased, and after the current of the driving motor is increased, judging that the friction force is increased, recording a travel point, judging that the control device is moved in place, wherein the rotating wheel is idle for a period of time in the friction force increasing process, so that the calculated travel position is not too accurate; and if the friction force is not large, the current of the driving motor is not large, the control system can misjudge that the driving motor is not stopped and continues to operate, and misjudgment that the motor is blocked and the stroke moves in place is easily caused.

Compared with the scheme with only one rotating wheel, the scheme of the two rotating wheels of the embodiment can stop the driven wheel once the control device encounters resistance, namely the Hall element can immediately output resistance signals, so that the stroke judgment is accurate, and the control device with the two wheels arranged side by side moves along the track more stably and reliably. And those skilled in the art will appreciate that the cooperation of the hall element and the magnet may be replaced by other means, i.e. only the driven wheel is provided with a travel detection device.

The control device is provided with a driving wheel 1 driven by a driving motor to rotate and a driven wheel 2 driven by the motion of the control device, wherein the driven wheel is provided with a magnet matched with a Hall element, so that the motion is more stable, the blocking is rapid, the judgment is accurate, and the stroke calculation is also accurate.

While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the utility model, but such changes and modifications fall within the scope of the utility model.

Claims (10)

1. The electric curtain control device comprises a shell (10) and a bracket (3) arranged in the shell (10), wherein the bracket (3) is provided with a driving wheel (1) and a driven wheel (2) which are arranged in parallel and axially in the same direction, the upper end of the shell (10) is provided with an opening (40) for exposing the driving wheel (1) and the driven wheel (2),

The bracket (3) moves up and down along the shell (10) so as to enable the driving wheel (1) and the driven wheel (2) to be exposed out of the opening (40) to press the curtain rail;

The driving wheel (1) rotates around the axial direction of the driving wheel under the drive of the driving motor (30) and moves along the curtain track, so that the driven wheel (2) is driven to synchronously move;

An elastic piece (6) is arranged below the driven wheel (2) and is used for giving upward force to the driven wheel (2); and/or the outer ring of the driven wheel is made of elastic materials.

2. The motorized window treatment of claim 1, wherein: and a lifting motor (20) is also arranged in the shell (10) and used for driving the support (3) to move up and down.

3. The motorized window treatment of claim 1, wherein: a transmission mechanism is arranged between the driving wheel (1) and the driving motor (30), a clutch device is arranged between the output end of the transmission mechanism and the driving wheel (1), and the clutch device is used for transmitting the rotation of the driving motor (30) to the driving wheel (1) and keeping the separation of the rotation transmission of the driving wheel (1) to the direction of the transmission mechanism.

4. A motorized window treatment according to claim 3, wherein: the driving wheel (1) comprises a shell (11) and an inner shell (12) which are coaxially sleeved and can synchronously rotate, one end of the inner shell (12) is exposed out of the shell (11) and is provided with a shaft (13), the other end of the inner shell is provided with a cavity (14), the clutch device comprises a cam (53), a first end of the cam (53) is located in the cavity (14) and is provided with a lug (531), the lug (531) divides the cavity (14) into two areas, each area is internally provided with a steel ball (51), concave holes (141) matched with the steel balls (51) are formed in the inner peripheral wall of the cavity (14), the second end of the cam (53) is connected with a final gear (4) of the transmission mechanism and synchronously rotates, and when the steel balls (51) fall into the concave holes (141), the cam (53) are clamped from two sides, so that the cam (53) and the inner shell (12) synchronously rotate.

5. The motorized window treatment of claim 4, wherein: a retainer ring (52) is further arranged on the outer side of the cavity (14), the first end of the cam (53) is sealed in the cavity (14), and an opening is formed in the center of the retainer ring (52) for the second end of the cam (53) to extend out.

6. The motorized window treatment of claim 5, wherein: the shaft (13) is provided with a bearing (15) for supporting the rotation of the driving wheel (1), and a large bearing (54) for supporting the rotation of the driving wheel (1) is also arranged between the retainer ring (52) and the inner shell (12).

7. The motorized window treatment of claim 2, wherein: the output shaft of the lifting motor (20) is fixedly connected to a threaded rod (201) which is vertically arranged, a matched nut block (202) is sleeved on the outer side of the threaded rod (201), and the nut block (202) is fixedly connected with the support (3).

8. The motorized window treatment of any of claims 1-6, wherein: the driving wheel outer ring is also provided with an elastic material, and the thickness of the elastic material of the driven wheel outer ring is larger than that of the elastic material of the driving wheel outer ring.

9. The motorized window treatment of any of claims 1-6, wherein: the driven wheel is also provided with a travel detection device, and the travel detection device comprises a magnet arranged on the driven wheel (2), a circuit board (70) arranged in the shell (10) and a Hall element which is arranged on the circuit board (70) and matched with the magnet.

10. The motorized window treatment of claim 1, wherein: the shell (10) is provided with a hook (300) which is detachably connected, and the hook (300) is used for being connected with an external connecting piece (200).