阅读说明：本技术 无绳百叶窗装置 (Wireless shutter device ) 是由 张圣龙 于 2019-01-04 设计创作，主要内容包括：本发明提供一种可以以手动、半自动、自动等多种方式操作的无绳百叶窗装置。无绳百叶窗装置包括：卷绕辊、帘幕构件、对卷绕辊提供旋转驱动力的驱动电动机、连接在帘幕构件下端并沿帘幕构件解绕的方向施加扭矩的配重构件、对卷绕辊施加弹性力并沿帘幕构件卷绕的方向施加扭矩的扭力弹簧、以及在驱动电动机和卷绕辊之间向两方向传递动力的旋转转换模块；在驱动电动机不产生驱动力的状态下,扭力弹簧施加的扭矩、配重构件施加的扭矩、以及旋转转换模块和驱动电动机的阻力实现平衡,从而使帘幕构件维持静止状态,当在配重构件上作用向上方或者下方的外力时,力的平衡被打破,帘幕构件在卷绕辊上卷绕或解绕。(The invention provides a cordless blind device which can be operated in various modes such as manual mode, semi-automatic mode, automatic mode and the like. The cordless blind apparatus includes: the curtain structure comprises a winding roller, a curtain member, a driving motor for providing rotary driving force for the winding roller, a counterweight member which is connected with the lower end of the curtain member and applies torque along the unwinding direction of the curtain member, a torsion spring which applies elastic force to the winding roller and applies torque along the winding direction of the curtain member, and a rotary conversion module which transmits power to the two directions between the driving motor and the winding roller; in a state where the driving motor does not generate the driving force, the torque applied by the torsion spring, the torque applied by the weight member, and the resistance of the rotation converting module and the driving motor are balanced, so that the curtain member is maintained in a stationary state, and when an external force is applied to the weight member in an upward or downward direction, the balance of the forces is broken, and the curtain member is wound or unwound on the winding roller.)

1. A cordless blind apparatus, wherein the apparatus comprises: a winding roller coupled to the rotating shaft; a curtain member wound on or unwound from the winding roller; a driving motor for providing a rotational driving force to the winding roller to wind or unwind the curtain member; a weight member connected to a lower end of the curtain member, applying a torque to the winding roller by gravity in a first direction in which the curtain member is unwound; a torsion spring applying an elastic force to the winding roller and applying a torque in a second direction in which the curtain member is wound; and a rotation conversion module coupled between the driving motor and the winding roller, transmitting power in both directions, transmitting a rotational driving force provided by the driving motor to the winding roller, or transmitting a torque provided by the torsion spring to the winding roller to the driving motor,

when the driving motor does not generate driving force, the torque exerted by the torsion spring, the torque exerted by the counterweight member and the resistance of the rotation conversion module and the driving motor are balanced to maintain the curtain member in a static state,

when an external force acts upward or downward on the weight member, the balance of forces is broken and the curtain member is wound or unwound on the winding roller.

2. The cordless blind apparatus according to claim 1, wherein the torsion spring is set to apply a torque larger than a resultant of a frictional resistance of the rotation conversion module and a regenerative resistance of the driving motor.

3. The cordless blind apparatus according to claim 1, wherein the rotation conversion module includes: a first rotating member connected to the driving motor and rotating together therewith; a second rotating member connected to the winding roller and rotating; and a rotation intermediate unit interposed between the first rotating member and the second rotating member and transmitting power.

4. The cordless blind apparatus according to claim 3, wherein rotation centers of the first and second rotating elements are located on the same axis, and the rotation intermediate unit decelerates the rotation speed of the first rotating element and transmits it to the second rotating element.

5. The cordless blind apparatus according to claim 3,

the first rotating element includes a first sun gear,

the rotary intermediate unit includes: a plurality of first planetary gears that revolve around the first sun gear; a first rotating plate to which a rotating shaft of the first planetary gear is coupled; and a second sun gear connected to a reverse surface of the first rotating plate to which the first planetary gear is coupled,

the second rotating element includes: a plurality of second planetary gears that revolve around the second sun gear; and a second rotating plate to which a rotating shaft of the second planetary gear is coupled.

6. The cordless blind apparatus of claim 5, further comprising a ring gear inscribed simultaneously with the first and second planet gears.

7. The cordless blind apparatus according to claim 5, further comprising a rotation block, an outer circumferential surface of which is coupled to an inside of the winding roller and rotates together, and a rotation shaft coupled to the second rotation element.

8. The cordless blind apparatus according to claim 1, further comprising: an encoder that detects rotation of at least one of the winding roller and the drive motor; and the number of the first and second groups,

and a control module for driving the driving motor when the encoder detects the rotation motion.

9. The cordless blind apparatus according to claim 8, wherein the control module stops the driving of the driving motor when a load is instantaneously increased in the driving motor operation.

10. The cordless blind apparatus according to claim 1, further comprising a control module which controls the driving motor to be driven to rotate when the driving motor generates an electromotive force.

Technical Field

The present invention relates to a cordless blind apparatus operable without a pulling cord (cord), and more particularly, to a cordless blind apparatus that can be conveniently operated in various manners such as a manual manner, a semi-automatic manner, an automatic manner, and the like.

Background

The shutter device is installed at the window side and used for opening and closing the window. The blind device is a structure capable of adjusting the amount of shielding of a window, and thus the amount of lighting can be changed by the blind device. The blind apparatus is not only used for such adjustment of the lighting amount and the like, but also can be mounted on a window side as a decorative element for decorating a room. The shutter arrangement may comprise a screening arrangement of curtains or slats or the like.

The curtain is one of the shielding structures widely used in the blind device, and is formed of a material such as fabric. The amount of shading can be adjusted by winding or unwinding such a curtain on or from a roller. Such a blind apparatus including a curtain also requires a configuration for rotating a roller wound around the curtain. Since the roller is mounted high at the upper end of the window, tension can be applied and the roller can be rotated by a draw cord (wire) that is lowered to the lower end of the window.

That is, as a structure for operating the conventional blind device, a pull cord and the like are widely used. The pull cord is attached to the roller so that tension can be applied to the roller and caused to rotate, thereby allowing for relatively simple installation and use. However, if the cord is long, it may become an obstacle and cause an accident such as tripping, and when the cord is operated, the tension is only applied to one side of the roller, so that a functional failure often occurs, and there is a problem that excessive force is unnecessarily consumed for operating the cord in the case where the cord is not connected well. Therefore, there is a need for a configuration in which the blind apparatus can be operated more conveniently.

[ Prior Art document ]

[ patent document ]

(patent document 1) Korean registered Utility model publication No. 20-0480955 (2016.07.29)

Disclosure of Invention

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a cordless blind apparatus that can be easily operated without a cord (thread), and particularly to provide a cordless blind apparatus that can be operated in various modes such as a manual mode, a semi-automatic mode, and an automatic mode.

The technical subject of the present invention is not limited to the above-mentioned subject, and other technical subjects not mentioned will be clearly understood by those skilled in the art from the following description.

The cordless blind apparatus according to the present invention comprises: a winding roller connected to the rotating shaft; a curtain member wound on or unwound from the winding roller; a driving motor for providing a rotational driving force to the winding roller to wind or unwind the curtain member; a weight member connected to a lower end of the curtain member, applying a torque to the winding roller by gravity in a first direction in which the curtain member is unwound; a torsion spring applying an elastic force to the winding roller and applying a torque in a second direction in which the curtain member is wound; and a rotation conversion module coupled between the driving motor and the winding roller, transmitting power in both directions, transmitting a rotational driving force provided by the driving motor to the winding roller, or transmitting a torque provided by the torsion spring to the winding roller to the driving motor. In a state where the driving motor does not generate the driving force, the torque applied by the torsion spring, the torque applied by the weight member, and the resistance of the rotation conversion module and the driving motor are balanced, thereby maintaining the curtain member in a stationary state, and when an external force acts upward or downward on the weight member, the balance of the forces is broken and the curtain member is wound or unwound on the winding roller.

The torsion spring may be set to apply a torque greater than a resultant force of a frictional resistance of the rotation conversion module and a regenerative resistance of the driving motor.

The rotation conversion module may include: a first rotating member connected to the driving motor and rotating together therewith; a second rotating member connected to the winding roller and rotating; and a rotation intermediate unit interposed between the first rotating member and the second rotating member and transmitting power.

The rotation centers of the first rotating element and the second rotating element are located on the same axis, and the rotation intermediate unit decelerates the rotation speed of the first rotating element and transmits the decelerated rotation speed to the second rotating element.

The first rotating element may include a first sun gear, and the rotary intermediate unit may include: a plurality of first planetary gears that revolve around the first sun gear; a first rotating plate to which a rotating shaft of the first planetary gear is coupled; and a second sun gear connected to an opposite surface of the first rotating plate to which the first planetary gear is combined, the second rotating member may include: a plurality of second planetary gears that revolve around the second sun gear; and a second rotating plate to which a rotating shaft of the second planetary gear is coupled.

It is also possible to further include a ring gear inscribed simultaneously with the first planetary gear and the second planetary gear.

It is also possible to further include a rotation block, an outer circumferential surface of which is coupled to an inner side of the winding roller and rotates together, and a rotation shaft coupled to the second rotation member.

The method can further comprise the following steps: an encoder that detects rotation of at least one of the winding roller and the drive motor; and a control module for driving the driving motor when the encoder detects the rotation action.

The control module may stop the driving of the driving motor when a load is instantaneously increased in the operation of the driving motor.

It is also possible to further include a control module that controls the driving motor to rotate when the driving motor generates an electromotive force.

Effects of the invention

According to the present invention, the blind apparatus can be operated very conveniently without a pulling rope (wire). In particular, by means of the composite efficient driving structure realized in the device, the device can be operated conveniently by selecting various operation modes such as manual mode, semi-automatic mode and automatic mode according to the requirement without a wire rope. Thereby, not only the constructional and functional problems caused by the use of conventional cords can be completely solved, but also the shutter arrangement can be operated more conveniently and adjusted and used in a desired manner.

Drawings

Fig. 1 is a perspective view of a cordless blind apparatus according to an embodiment of the present invention.

Fig. 2 is an exploded perspective view of the cordless blind apparatus of fig. 1.

Fig. 3 is an enlarged perspective view of the rotation conversion module and the driving motor provided inside the winding roller of fig. 2.

Fig. 4 is a schematic sectional view of an internal configuration of the cordless blind apparatus of fig. 1.

Fig. 5 is an exploded perspective view of the rotation conversion module of fig. 3.

Fig. 6 is a sectional view schematically showing the internal structure of the rotation conversion module of fig. 3.

Fig. 7 is an exemplary diagram of an operational process of the rotation conversion module of fig. 3.

Fig. 8 is a schematic view of an example of a control method of the cordless blind apparatus of fig. 1.

Fig. 9 to 12 are exemplary diagrams of an operation process of the cordless blind apparatus of fig. 1.

Detailed Description

The advantages, features and methods of accomplishing the same of the present invention will be set forth with reference to the detailed description of the embodiments and the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be embodied in various forms only to provide a complete disclosure of the present invention and to fully inform the scope of the present invention to those ordinarily skilled in the art to which the present invention pertains, and the present invention is defined only by the claims. Throughout the specification, the same reference numerals refer to the same constituent elements.

Hereinafter, a cordless blind apparatus according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 12.

Fig. 1 is a perspective view of a cordless blind apparatus according to an embodiment of the present invention, fig. 2 is an exploded perspective view of the cordless blind apparatus of fig. 1, fig. 3 is an enlarged perspective view of a rotation conversion module and a driving motor provided inside a winding roll of fig. 2, fig. 4 is a sectional view of an internal structure of the cordless blind apparatus of fig. 1, fig. 5 is an exploded perspective view of the rotation conversion module of fig. 3, and fig. 6 is a sectional view of an internal structure of the rotation conversion module of fig. 3. In particular, to more clearly illustrate the interior of the winding roller, the sectional view of FIG. 4 is shown with the curtain member and the weight member removed.

Referring to fig. 1 to 6, a cordless blind apparatus 1 according to an embodiment of the present invention is a blind apparatus of a type in which a curtain member 20 is wound (wind) or unwound (unwind) on a winding roll 10. The cordless blind apparatus 1 of the present invention has the following features: the curtain member 20 is pulled by the weight member 21 and the torque is applied to the winding roller 10 in a direction in which the curtain member 20 is unwound and the torque is applied to the winding roller 10 in an opposite direction to the winding of the curtain member 20 by the torsion spring 30, and the rotation converting module 420 and the driving motor 410 connected to the winding roller 10 operate as a resistance body preventing the rotation. Thus, in the present invention, in the case where the driving motor 410 does not generate a driving force, the torque applied from the torsion spring 30, the torque applied from the weight member 21, and the resistance of the rotation converting module 420 and the driving motor 410 are balanced, so that the curtain member 20 is maintained in a stationary state, and when an external force acts upward or downward on the weight member 21, the balance of the forces is broken, so that the curtain member 20 is wound or unwound on the winding roller 10.

That is, the present invention has the following constructive features: the present invention is a structure in which a pair of torques in opposite directions are generated by a device itself and act on the winding roll 10, and particularly, a difference between the torques in opposite directions is offset by a resistance force generated by the rotation converting module 420 and the driving motor 410, so that the balance of the forces can be more closely realized. With such a configuration, the curtain member 20 can be naturally stopped at any deployment position, and therefore, the curtain member 20 can be easily operated even without an adjustment means such as a pull cord (wire). In particular, the curtain member 20 can be easily wound or unwound by applying a slight external force to the weight member 21 by hand or the like to release the equilibrium state of the force.

In addition, when the driving motor 410 is driven, the rotation converting module 420 and the driving motor 410 are rotated and the winding roll 10 can be operated, thereby having a feature of having a function of a driving means. That is, when the user directly applies an external force to the weight member 21 or the like in a manual or semi-automatic manner to operate the curtain part 20, although the rotation conversion module 420 and the driving motor 410 function as a resistance, the driving motor 410 may automatically brake and increase torque when a certain rotation is given, thereby also having a feature of automatically operating the curtain part 20. That is, the rotation converting module 420 connected to the winding roller 10 has a structure capable of performing rotation transmission in two directions, that is: when the rotation of the winding roll 10 is first rotated by an external force, the rotation converting module 420 and the driving motor 410 rotate and function as a resistor, and when the driving motor 410 rotates, they may function as a driving means for transmitting the rotation to the winding roll 10, by transmitting the rotation from the winding roll 10 to the driving motor 410, or transmitting the rotation of the driving motor 410 to the winding shaft 10. According to such constructive characteristics, the present invention has the following characteristics: the curtain member 20 may be operated by applying an external force by a hand or the like, or the curtain member 20 may be operated by driving the driving motor 410, or the driving motor 410 may be operated fully automatically by a remote controller or the like, and the curtain member 20 may be variously operated by a manual, semi-automatic, or automatic manner or the like.

Specifically, the cordless blind apparatus of the present invention includes: a winding roller 10 connected to the rotation shaft; a curtain member 20 wound on or unwound from the winding roller 10; a driving motor (refer to 410 of fig. 3 to 6) which provides a rotational driving force to the winding roller 10 to wind or unwind the curtain member 20; a weight member 21 connected to a lower end of the curtain member 20, applying a torque to the winding roller 10 in a first direction in which the curtain member 20 is unwound by gravity; a torsion spring 30 applying an elastic force to the winding roller 10 and applying a torque in a second direction in which the curtain member 20 is wound; and a rotation conversion module (refer to 420 of fig. 3 to 6) coupled between the driving motor 410 and the winding roller 10, transmitting power in both directions, transmitting a rotational driving force provided from the driving motor 410 to the winding roller 10, or transmitting a torque provided from the torsion spring 30 to the winding roller 10 to the driving motor 410; in a state where the driving motor 410 does not generate the driving force, the torque applied from the torsion spring 30, the torque applied from the weight member 21, and the resistance of the rotation converting module 420 and the driving motor 410 are balanced, so that the curtain member 20 is maintained in a stationary state, and when an external force acts upward or downward on the weight member 21, the balance of the forces is broken, so that the curtain member 20 is wound or unwound on the winding roller 10. Hereinafter, such a cordless blind apparatus 1 will be described in more detail by one embodiment of the present invention.

The winding roller 10 is connected to a rotation shaft and rotates. The rotation shaft is a structure for supporting and rotating the winding roller 10, and may be implemented in various forms. For example, the structure shown in fig. 2 may function as a rotating shaft, and includes rotating rings 110 and 120 connected to both end portions of the winding roll 10. The rotating rings 110, 120 are connected to both end portions of the winding roller 10, rotate around the first and second fixed blocks 32, 42, respectively, and rotatably support the winding roller 10. The rotational center of the rotating rings 110, 120 may coincide with the rotational center of the winding roller 10. However, it is not limited to such a configuration, and the winding roller 10 may be rotatably connected to a configuration of another form that rotatably supports the winding roller 10 in another embodiment. That is, in the present specification, the rotation axis does not necessarily refer to a configuration in which the axis is coupled to the rotation center, but includes all configurations of various forms that can rotatably support the rotatable member of the winding roller 10 or the like around the rotation center.

The winding roller 10 may include a guide protrusion (refer to 10a of fig. 2 and 4) elongated in a longitudinal direction at an inside thereof. The guide protrusion 10a is a structure for coupling the winding roller 10 with the aforementioned rotating rings 110, 120 and the first and second rotating blocks 31, 41 described later, and may be formed in a form of a rail, for example, protruding from the inner circumferential surface and extending long in the longitudinal direction. The rotary rings 110 and 120, the first rotary block 31, the second rotary block 41, and the like are coupled to the winding roller 10 by forming coupling structures such as protrusions and grooves that engage with the guide protrusions 10a on the outer circumferential surface. As described above, the rotating rings 110 and 120 coupled with the winding roller 10 rotate together with the winding roller 10 around the first and second fixing blocks 32 and 42, and form a rotatable support structure. In addition, the first rotating block 31 rotates together with the winding roller 10, and the torsion spring 30 is rotationally displaced or transmits the elastic force of the torsion spring 30 to the winding roller 10; the second rotation block 41 rotates together with the winding roller 10, and transmits the rotation of the winding roller 10 to the rotation conversion module 420, or conversely, transmits the rotation transmitted from the rotation conversion module 420 to the winding roller 10. That is, the winding roller 10 may internally house the torsion spring 30, the rotation converting module 420, etc., and be combined therewith, thereby transmitting or receiving the rotational force. The configuration in which the winding roller 10 is coupled to the torsion spring 30, the rotation converting module 420, and the like is not necessarily limited to such a structure, but may be modified into various forms in which they are rotated in conjunction with each other and rotational motions can be mutually transmitted.

The frame 11 may function to receive the winding roller 10 inside and support the winding roller 10. The frame 11 may be coupled with the winding roller 10 by a coupling portion (refer to 11c of fig. 2) or the like, for example. The connection portion 11c may be formed in a shaft shape and functions to determine the rotation center of the winding roller 10. That is, the rotating rings 110 and 120, the first and second fixed blocks 32 and 42 coupled to the rotating rings 110 and 120 and fixed to both end portions of the winding roll 10, and the connecting portion 11c connecting the first and second fixed blocks 32 and 42 to the frame 11 may function as a whole to rotatably support the rotation shaft of the winding roll 10. As described above, such a rotation support structure can be appropriately deformed as needed. As shown in fig. 1 and 2, the frame 11 may be formed of a vertical frame 11b and a horizontal frame 11 a. The vertical frame 11b is detachably coupled with the horizontal frame 11a and can internally receive the winding roller 10. The frame 11 may include a fixing member such as a bracket at one side so as to be easily mounted on an outer wall of a window or the like. The horizontal frames 11a are provided toward both ends of the winding roll 10, and the vertical frames 11b may be formed to be connected therebetween. In addition to this, the configuration or shape of the frame 11 may be variously modified.

A battery case 12 for supplying power, such as the above-described driving motor 410, may be formed at one side of the frame 11. The battery case 12 may be connected to the driving motor 410 or other control device via a power cable or the like and supplied with driving power. As shown, a relatively large-sized battery case 12 may be used and a large-capacity battery may be mounted. The battery compartment 12 may be formed detachably, and houses a large capacity battery, so that the possible standby time for the automatic operation of the cordless blind apparatus 1 is maintained at a time of year unit. The form, structure, and the like of the battery case 12 are not necessarily limited as shown in the drawings, and may be appropriately modified to have a different structure as needed. If necessary, it is also possible to receive power supply through a socket or wirelessly or the like without using such a battery box 12.

The curtain member 20 is wound or unwound on the winding roller 10 to change the length. The curtain member 20 has an upper end fixed to the outer circumferential portion of the winding roller 10 and a lower end to which a weight member 21 is connected to maintain tension. When the winding roller 10 rotates in one direction, the curtain member 20 is wound (wound) on the winding roller 10 and ascends, and the length of the unwound portion decreases. In addition, when the winding roller 10 rotates in the opposite direction, the curtain member 20 is unwound (unwound) and descends on the winding roller 10, and the length of the unwound portion increases. That is, the curtain member 20 may be moved up and down as the winding roller 10 rotates. The curtain member 20 may be made of fabric, but may be made of various materials capable of shielding light in addition thereto. The length, width, and the like of the curtain member 20 may be appropriately adjusted according to the size of a window to which the cordless blind apparatus 1 is applied, the size of an installation space, and the like.

The weight member 21 may be formed of a relatively heavy material, or at least a part of the weight member 21 may be formed of a heavy material. The weight member 21 can change the weight by being entirely detachable, or by detaching the weight body. As shown in the drawings, a weight member 21 is connected to a lower end of the curtain member 20 and applies tension to the curtain member 20 by its own weight. Accordingly, a torque for rotating the winding roller 10 connected to the upper end of the curtain member 20 can be applied. That is, the weight member 21 is connected to the lower end of the curtain member 20 and applies a torque to the winding roller 10 in the first direction in which the curtain member 20 is unwound by gravity. The weight member 21 is not necessarily limited to the illustrated shape, but may be deformed into various shapes.

The torsion spring 30 applies elasticity to the winding roller 10 and applies torque in a direction opposite to the first direction. As described above, the torsion spring 30 may be connected to the winding roller 10 through the first rotation block 31, and thus may apply elasticity to the winding roller 10. That is, the torsion spring 30 applies elasticity to the winding roller 10 and applies torque in the second direction in which the curtain member 20 is wound. As shown in fig. 2 and 4, the torsion spring 30 may be accommodated inside the winding roller 10 and may rotate together with the winding roller 10 to be compressed or relaxed. The torsion spring 30 may be formed of a twisted elastic body, which may be a coil spring, elastically deformed with the rotation of the winding roller 10 and storing elastic energy. As shown in fig. 2, both end portions of the torsion spring 30 may be connected to the first rotating block 31 and the first fixing block 32, respectively. As described above, the first rotating block 31 is coupled to the winding roller 10 and rotates together, and the first fixing block 32 is coupled to the frame 11 and maintains a fixed state, thereby causing the torsion spring 30 to be twisted. As shown, the torsion spring 30 may be inserted in parallel to the inside of the winding roller 10.

One end of the torsion spring 30 is connected to a first rotating block 31, and the first rotating block 31 is coupled to the winding roller 10 and rotates. The first rotation block 31 may be formed with a coupling groove (refer to 31a of fig. 2) for coupling with the above-described guide protrusion 10 a. The other end of the torsion spring 30 is formed with a first fixing block 32 and fixed to the frame 11. The rotating ring 110 is rotatably coupled around the first fixing block 32 and is coupled with the winding roller 10, thereby rotatably supporting the winding roller 10. Therefore, when the winding roller 10 rotates, one end of the torsion spring 30 connected to the first rotating block 31 is twisted, and the other end is maintained in a fixed state, thereby generating a rotational displacement. Whereby a torque can be generated by the torsion spring 30. The torque generated at this time is the torque in the second direction in which the winding roller 10 winds as described above. The more the winding roller 10 rotates, the more the twist increases, the greater the rotational displacement, and consequently the torque exerted by the torsion spring 30 increases.

That is, as the unwinding and developing lengths of the curtain member 20 increase, the number of rotations of the winding roller 10 also increases, and as the number of rotations increases, the magnitude of the torque applied in the opposite direction (winding direction) by the torsion spring 30 also increases. Further, as the deployed length of the curtain member 20 increases, the load applied to the winding roller 10 in the gravity direction (unwinding direction) also increases in proportion thereto, and therefore the unwinding-direction torque applied to the winding roller 10 by the weight member 21 and the winding-direction torque applied to the winding roller 10 by the torsion spring 30 increase or decrease in pairs depending on the length of the curtain member 20. With this configuration, the cordless blind apparatus 1 can appropriately fix the curtain member 20 at substantially any position. Although not shown in the drawings, a shaft structure or the like penetrating the inner side of the torsion spring 30 and connected with the first rotating block 31 and the first fixing block 32 may be formed, and the first rotating block 31 may be rotatably coupled to such a shaft structure.

However, such paired torques may not be able to achieve equilibrium tightly. As described above, the present invention connects the rotation converting module 420 and the driving motor 410 to the winding roller 10, generates resistance by the rotation of the winding roller 10, and maintains the balance of force by such resistance, thereby making the curtain member 20 stationary. That is, in a state where the driving motor 410 does not generate the driving force, the torque applied through the torsion spring 30, the torque applied through the weight member 21, and the resistance through the rotation conversion module 420 and the driving motor 410 are balanced, thereby maintaining the curtain member 20 in a stationary state. In this manner, by the resistance of the rotation conversion module 420 and the driving motor 410, the balance of the forces is achieved, and the curtain member 20 can be stopped at any position very effectively. In addition, the following advantages are provided: by reflecting the resistance of the rotation conversion module 420 and the driving motor 410 in the design as an element for achieving the balance of forces, the driving motor 410 is driven without adding a separate driving part in addition to the resistance body, and such a rotation resistance body is utilized just as a driving means for automatically operating the curtain member 20. The torque applied by the torsion spring 30 may be set to be greater than a resultant force of a frictional resistance of the rotation converting module 420 and a regenerative resistance of the driving motor 410 (referring to an electromagnetic resistance caused by an induced current or electromotive force generated due to the rotation of the motor), and when the equilibrium is broken and the rotation is started due to an external force, at least such resistance may be overcome and the rotation may be realized. However, such a resistance force may be set to a magnitude capable of offsetting a difference between a pair of a torque applied in the winding direction by the torsion spring 30 and a torque applied in the opposite direction by the weight member 21 in the unwinding direction, so that the force is equalized immediately after the external force is removed.

The structure, operation, and the like of the rotation conversion module 420 and the drive motor 410 will be described in more detail below.

As shown in fig. 3 and 4, the rotation conversion module 420 and the driving motor 410 may be combined with each other in a compact form through the case 43 and disposed inside the winding roller 10. The rotation conversion module 420, the driving motor 410, the second rotation block 41 connecting the rotation conversion module 420 and the winding roller 10, and the second fixing block 42 connected to the housing 42 to fix the driving motor 410 non-rotatably and connected to the frame 11 may form the rotation conversion driving part 40. That is, a structure that practically conforms to the following combined structure can be formed: the rotation converting driving part 40 has a second rotation block 41 formed at one end thereof, a second fixing block 42 formed at the other end thereof, a rotation ring 120 formed around the second fixing block 42 such that the first rotation block 31 is formed at one end of the torsion spring 30, a first fixing block 32 is formed at the other end thereof, and a rotation ring 110 formed around the first fixing block 32. By this configuration, in conjunction with the winding roller 10, it is possible to receive the transmission of rotation of the winding roller 10 or transmit the rotation to the winding roller 10. As shown in fig. 3, the second fixing block 42 may be formed with an inlet and outlet structure of a cable for supplying power to the driving motor 410 and the like, and the driving motor 410 may be connected to the rotation conversion module 420 at a front end formed with a rotation shaft, and a rear end combined with the encoder 411. The encoder 411 may be further connected to a control module 412 fixed to the inside of the second fixed block 42 so as to receive the supply of power and transmit and receive signals. The encoder 411 converts the rotation of a magnet connected to the shaft center of the drive motor 410 into an electric signal and receives the signal. As described above, with such an encoder 411 and a control module 412, etc., the driving motor 410 is operated at an appropriate point in time, and the apparatus can be operated semi-automatically or automatically. Such a control method will be described in more detail later.

As shown in fig. 5 and 6, the rotation conversion module 420 includes: a first rotating member 421 connected to the driving motor 410 and rotated together, a second rotating member 422 connected to the winding roller 10 and rotated, and a rotation intermediate unit 423 interposed between the first rotating member 421 and the second rotating member 422 and transmitting power. As shown in the figure, the rotation centers of the first rotating member 421 and the second rotating member 422 are located on the same axis, and the rotation intermediate unit 423 connects such first rotating member 421 and second rotating member 422. Specifically, the rotation intermediate unit 423 decelerates the rotation speed of the first rotating element 421 and transmits it to the second rotating element 422. The rotation conversion unit 420 may be formed of a plurality of gears as shown in the drawings. However, the present invention is not necessarily limited to the structure including the gear, and the rotation intermediate unit 423 may be formed by a plurality of types of rotation elements connected to the winding roller 10 to rotate together with the driving motor 410 and a plurality of types of intermediate structures interposed between the rotation elements and allowing power to be transmitted. In the present embodiment, the rotation intermediate unit 423 using gears will be explained.

As shown in fig. 5 and 6, the first rotating member 421 may include a first sun gear 421 a; the rotation intermediate unit 423 may include: a plurality of first planetary gears 423a revolving around the first sun gear 421a, a first rotating plate 423b to which a rotation shaft of the first planetary gears 423a is connected, and a second sun gear 423c connected to a reverse surface of the first rotating plate 423b to which the first planetary gears 423a are connected; the second rotating member 422 may include: a plurality of second planetary gears 422a revolving around the second sun gear 423c, and a second rotating plate 422b coupled to a rotation shaft of the second planetary gears 422 a. The first sun gear 421a is coupled to a shaft of the driving motor 410, and the first planetary gears 423a of the rotary intermediate unit 423 and the second planetary gears 422a of the second rotary element 422 are simultaneously inscribed in the ring gear 424a, wherein the ring gear 424a is formed on an inner circumferential surface of the ring gear portion 424, and the ring gear portion 424 accommodates these rotary elements therein. For example, on the second rotation plate 422b of the second rotation member 422, a protruding connection shaft 422c may be formed on the opposite surface to which the second planetary gear 422a is coupled, and the connection shaft 422c may be connected to the second rotation block (refer to 41 of fig. 3 and 4) through the shaft member 430. The shaft member 430 may function as a rotation shaft of the second rotation block 41. The shaft member 430 may be connected and fixed with a shaft coupling portion of the second rotation block 41 (refer to 41 of fig. 3). That is, as described above, the outer circumferential surface is coupled to the inside of the winding roll (refer to 10 of fig. 4) and rotates together, and the rotation shaft includes the rotation block coupled to the second rotation member 422 (i.e., the second rotation block 41), and can transmit rotation in both directions between the rotation conversion module 420 and the winding roll 10.

As shown, the second rotating element 422 and the rotation intermediate unit 423 respectively include planetary gears that revolve around the sun gear and change the rotation ratio. The first sun gear 421a of the first rotating member 421 is coupled to the shaft of the driving motor 410, and the second rotating plate 422b of the second rotating member 422 is coupled to the shaft member 430 through the connecting shaft 422c and rotates in synchronization with the second rotating block 41. In addition, the second rotating block 41 is coupled with the winding roller 10 through the coupling protrusion (refer to 41a of fig. 3) of the outer circumferential surface and rotates together with the winding roller 10 as described above, and finally, the rotation of the winding roller 10 is transmitted to the second rotating member 422 and mediated through the rotation intermediate unit 423 to be transmitted to the driving motor 410 coupled with the first rotating member 421. In addition, when the first rotating member 421 coupled to the driving motor 410 rotates, the rotation is mediated in the reverse direction by the rotation intermediate unit 423, thereby transmitting the rotation to the winding roller 10 connected to the second rotating member 422. In this manner, rotation is transmitted in both directions between the winding roller 10 and the driving motor 410 by the rotation conversion module 420. In addition, since the second rotating member 422, the rotation intermediate unit 423, and the first rotating member 421 have their centers of rotation on the same axis by the combination of the sun gear and the planetary gear, both directions of rotation can be transmitted very efficiently. In the second rotary element 422 and the rotation intermediate unit 423, the second planetary gear 422a and the first planetary gear 423a have double coupling via the second sun gear 423c, and the revolution ratio of the respective planetary gears is changed at least once to increase or decrease and transmit the rotation speed. The rotation ratio between the drive motor 410 and the winding roller 10 can thereby be adjusted very suitably. For example, the rotation ratio between the driving motor 410 and the winding roll 10 may be set to 12:1 or the like, and the rotation speed of the driving motor 410 may be reduced and transmitted to the winding roll 10.

Hereinafter, with reference to fig. 7 to 12, a specific operation process of the rotation conversion module, a control manner of the cordless blind apparatus by the control module and the encoder, etc., and an operation process of the cordless blind apparatus as a whole operated thereby will be described in more detail.

Fig. 7 is an exemplary view of an operation process of the rotation conversion module of fig. 3, fig. 8 is a pattern view of an example of a control manner of the cordless blind apparatus of fig. 1, and fig. 9 to 12 are exemplary views of an operation process of the cordless blind apparatus of fig. 1.

Referring to fig. 7, the rotation conversion module 420 can very effectively transmit two-directional rotation through a combination of a sun gear and a planetary gear. For example, as shown in fig. 7 (a), the driving force may be transmitted from the shaft member 430 to the direction (a direction) of the rotation conversion module 420. As shown in fig. 3 and 5, the shaft member 430 may be coupled with the second rotating block 41 through the first fixing part 431 and coupled with the coupling shaft 422c of the second rotating member 422 through the second fixing part 432, thereby transmitting the rotational force of the second rotating block 41 rotating together with the winding roller 10 to the rotation converting module 420 as the rotational shaft of the second rotating block 41. When the rotation is thus transmitted to the rotation conversion module 420, the second rotation plate 422b of the second rotation element 422 rotates in the same direction, thereby revolving the plurality of second planetary gears 422 a. The second planetary gears 422a move while engaging with the ring gear 424a formed on the inner peripheral surface of the ring gear portion 424, and therefore rotate in the reverse direction opposite to the revolving direction of the second rotating plate 422 b. Therefore, the second sun gear 423c meshed with the second planetary gear 422a rotates in the direction opposite to the rotation direction of the second planetary gear 422 a. Since the second sun gear 423c is integrally formed with the first rotating plate 423b, the first rotating plate 423b rotates in the same direction as the rotation direction of the second sun gear 423c, and the first planetary gears 423a revolve while the second planetary gears 422a engage with the ring gear 424a and move, and therefore, the rotation direction is reversed opposite to the revolution direction of the first rotating plate 423 b. As a result, the first sun gear 421a meshing with the first planetary gear 423a rotates in the reverse direction of the rotation direction of the first planetary gear 423a, and transmits the rotation to the drive motor 410.

As described above, the rotational driving force can be efficiently transmitted from the winding roller 10 to the direction (a direction) of the driving motor 410 via the second rotating member 422, the rotational intermediate unit 423, and the first rotating member 421. At this time, the rotation ratio can be changed at least once by the gear ratio of each planetary gear, the gear ratio of each sun gear, the gear ratio of the ring gear, and the like. Therefore, the rotational speed may be changed for transmission, and for example, the rotational speed of the driving motor 410 may be increased and driven at a rotation ratio more than the number of rotations of the shaft member 430.

On the one hand, as shown in fig. 7 (B), the driving force may be transmitted from the driving motor 410 to the rotation converting module 420 in a direction (B direction). By reversing the above-described rotation process, the driving force can be transmitted in the reverse direction very efficiently. When the driving motor 410 rotates, the first sun gear 421a rotates in the same direction, and the first planetary gears 423a engaged with the first sun gear 421a rotate in the same direction, so that the ring gear 424a revolves in the reverse direction to the rotation direction. Then, the first rotating plate 423b coupled to the first planetary gears 423a also rotates in the same direction as the revolving direction of the first planetary gears 423a, and thereby rotates the second sun gear 423 c. Since the second sun gear 423c meshes with the second planetary gears 422a, the second planetary gears 422a rotate in the reverse direction of the rotation direction of the second sun gear 423c, and the ring gear 424c is made to revolve in the reverse direction of the rotation direction. Then, the second rotary plate 422b coupled to the second planetary gear 422a rotates in the same direction as the revolution direction of the second planetary gear 422a, and the shaft member 430 connected to the second rotary plate 422b rotates. Through this process, the rotation in the same direction as the second rotation plate 422b is finally transmitted to the second rotation block 42 and the winding roller 10 of fig. 3 and 4 through the shaft member 430. As described above, the driving force can also be efficiently transmitted from the driving motor 410 to the direction (B direction) of the winding roller 10 via the first rotating member 421, the rotation intermediate unit 423, and the second rotating member 422. At this time, the rotation speed can be changed and transmitted by changing the gear ratio of each planetary gear, the gear ratio of each sun gear, the gear ratio of the ring gear, and the like at least once, and for example, the rotation speed of the winding roller 10 can be reduced at a rotation ratio smaller than the rotation number of the drive motor 410 and driven.

As described above, the rotation transmission in both directions of the rotation converting module 420 (i.e., the transmission of the rotational driving forces in the a and B directions) can be freely converted from the winding roll 10 to the driving motor 410, or from the driving motor 410 to the winding roll 10, and the rotational direction itself to be transmitted at the time of each driving force transmission is not distinguished as the direction in which the winding roll 10 unwinds or winds, and the rotation in any direction can be freely and effectively transmitted in the a direction or the B direction. As described above, with the rotation transfer operation of the rotation conversion module 420, it is very convenient to control the cordless blind apparatus to be automatically operated at an appropriate point of time.

Referring to (a) of fig. 8, by rotating the conversion module 420, the rotational force may be transmitted from the winding roll 10 to the driving motor 410. As described above, at this time, the user may apply an external force through the weight member (refer to 21 of fig. 1) or the like to release the force equalization, thereby rotating the winding roller 10. The rotation direction may be a direction in which the winding roll 10 winds or unwinds, and the rotation may be transmitted from the winding roll 10 to a direction (a direction) toward the driving motor 410 by the driving force transmission structure of the rotation conversion module 420 described above. As described above, when the rotational force is transmitted to the driving motor 410, the rotational motion of the driving motor 410 can be detected by the encoder 411. The encoder 411 transmits a detection signal of the rotational motion to the control module 412, and the control module can recognize the rotational motion by the detection signal of the encoder 411. When the rotation operation is recognized in this manner, the control module 412 transmits a control signal S to the drive motor 410 shown in fig. 8 (b), and drives the drive motor 410. Next, the driving motor 410 receives a driving force from the winding roll 10, and changes from a passive rotating body that is passively rotated to an active rotating body that is automatically rotated. At this time, the transmission direction of the driving force is reversed from the driving motor 410 to the direction (B direction) of the winding roll 10 by the above-described transmission structure of the rotation conversion module 420, and the rotation direction is the same as the direction in which the winding roll 10 is first rotated according to the driving force. Then, the winding roller 10 is rotated in the direction of the initial rotation by the driving force of the driving motor 410, and thus the curtain member (refer to 20 of fig. 1) is wound or unwound. In this way, the cordless blind apparatus can be controlled to automatically operate at an appropriate point of time.

That is, the cordless blind apparatus can be automatically controlled by the encoder 411 and the control module 412, wherein the encoder 411 detects the rotation of at least one of the winding roller 10 and the driving motor 410, and the control module 412 drives the driving motor 410 when the encoder 411 detects the rotation. In the embodiment of the present invention, the encoder 411 is connected to the driving motor 410 to detect the rotation of the driving motor 410, and an encoder for directly detecting the rotation of the winding roller 10 may be provided to detect the rotation of the winding roller 10 by the encoder to drive the driving motor 410. Even if the rotation ratios of the winding roll 10 and the driving motor 410 are different, they can be rotated together with each other, and when the rotation of at least one of the winding roll 10, the driving motor 410, or the rotating bodies (the rotation converting module 420, the second rotating block 41, the first rotating block 31, the shaft member 430, etc.) connected therebetween or rotated together is detected by an encoder, and an appropriate number of rotations is detected, the driving motor 410 is driven to automatically operate the apparatus. In this case, the control module 412 may stop driving the driving motor 410 when the load is momentarily increased in the operation of the driving motor 410. That is, when the curtain member 20 is completely unwound or completely wound and rotation is restricted, the load of the driving motor 410 is increased, and when such a load of the driving motor 410 is increased, control for stopping driving the driving motor 410 may be performed. When electromotive force is generated inside by the rotation of the driving motor 410 without using the encoder 411 or the like, the driving motor 410 can be driven and rotated as a signal. For example, the rotation speed of the drive motor 410 may be detected by a sensorless control method, and control may be performed such as operating the drive motor 410 or detecting an overload to stop the drive.

Thereby, the cordless blind apparatus 1 can be very conveniently operated in the manner as shown in fig. 9 to 12. As shown in fig. 9, the cordless blind apparatus 1 generates the torque T1 applied by the weight member 21 in the first direction in which the curtain member 20 is unwound and the torque T2 applied by the torsion spring 30 in the second direction in which the curtain member 20 is wound in pairs without an external force, whereby a certain degree of balance can be achieved. However, as described above, the torque pairs are increased and decreased in proportion to each other, and the magnitudes of the torque pairs may not completely coincide with each other, and the difference may be offset by the resistance of the rotation converting module 420 and the driving motor 410 connected to the winding roll 10, thereby maintaining the balance of the forces as a whole. That is, as described above, reflecting the resistance of the rotation conversion module 420 and the driving motor 410 in the design as an element to achieve the balance of the forces, the paired torques and resistances formed in the opposite directions to each other achieve the balance, whereby the stationary state of the curtain member 20 can be maintained.

In this state, as shown in fig. 10, an external force may be applied to the weight member 21 or the like to rotate the winding roller 10. Even a slight external force can release the equilibrium state of the forces, temporarily increasing the torque in one direction, and rotating the winding roller 10 in the direction corresponding to the torque. For example, as shown in the figure, the winding roller 10 can be simply rotated in the direction in which the curtain member 20 is wound by applying a lifting force to the weight member 21. As described above, the torque applied by the torsion spring 30 is set to be larger than the resultant force of the frictional resistance of the rotation converting module 420 (which may be mechanical frictional resistance including rotational contact of the above-described gears, etc.) and the regenerative resistance of the driving motor 410 (which refers to electromagnetic resistance caused by the induced current generated by the rotation of the motor), and when the balance is broken by the external force and the rotation is started as described above, it is possible to at least overcome such resistance and rotate it. However, since such resistance is set to a magnitude that can cancel the difference between the pair of the torque applied in the winding direction by the torsion spring 30 and the pair of the torques in the opposite directions to each other applied in the unwinding direction by the weight member 21, so that the force is equalized immediately if the external force is removed, it may be necessary to continuously provide even a small external force for winding the curtain member 20 to the tip end.

This problem is solved very effectively by the automatic control as described above. That is, as shown in fig. 10, when the winding roller 10 rotates, the rotation converting module 420 transmits a driving force in the direction (a direction) of the driving motor 410, and the encoder 411 can detect the rotation. Therefore, when the rotation operation is detected, the driving motor 410 is driven by the control module 412, and the transmission direction of the driving force can be reversed in the direction (B direction) toward the winding roll 10 by the driving motor 410 as shown in fig. 11. At this time, the rotation direction is maintained in the direction in which the winding roller 10 is initially rotated, and as shown in the drawing, the winding roller 10 is rotated in the originally predetermined direction by the driving force of the driving motor 410, so that the curtain member 2 of the cordless blind apparatus 1 can be automatically operated. That is, when the user applies a slight external force to start the winding roller 10 as shown in fig. 10, a driving force is transmitted to the driving motor 10, the control module 412 detected thereof operates the driving motor, and the curtain member 20 can be automatically wound by the rotational force of the driving motor 410 as shown in fig. 11. As described above, the automatically wound cordless blind apparatus 1 stops the driving motor 10 by detecting the control of the load of the driving motor 410 and the like when the curtain member is completely wound, and maintains the state in which the winding roller 10 is stationary at the corresponding position by equalizing the force again in the state in which the external force is removed, as shown in fig. 12.

In this way, the manual control of the user as an action signal can realize the automatic winding or unwinding control of the curtain member 20. By such automatic control, the cordless blind apparatus 1 can be operated more conveniently. Even if the battery or the like cannot be automatically operated over the lifetime, the balance of the force can be released by applying a slight external force, and the cordless blind apparatus 1 can be freely operated manually or semi-automatically. Further, if necessary, the driving motor 410 may be automatically operated from a remote place by a remote controller or the like, and the cordless blind apparatus 1 may be operated in a completely automatic manner even without a signal such as manual control or the like.

It is to be understood that although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may be embodied in other specific forms without departing from the technical spirit or essential characteristics thereof. It should be understood that the above-described embodiments are illustrative in all respects, not restrictive.

[ description of reference numerals ]

1: the cordless blind apparatus 10: winding roller

10 a: the guide projection 11: frame structure

11 a: horizontal frame 11 b: vertical frame

11 c: connecting part 12: battery box

20: the curtain member 21: counterweight rod

30: torsion spring 31: first rotating block

31 a: the coupling groove 32: first fixed block

40: rotation conversion drive unit 41: second rotating block

41 a: coupling protrusion 41 b: shaft coupling part

42: second fixing block 43: shell body

110. 120: the rotating ring 410: driving motor

411: the encoder 412: control module

420: rotation conversion module 421: first rotating element

421 a: first sun gear 422: second rotating element

422 a: second planetary gear 422 b: second rotating plate

422 c: connecting shaft 423: rotary intermediate unit

423 a: first planetary gear 423 b: first rotating plate

423 c: second sun gear 424: ring gear part

424 a: ring gear 430: shaft member

431: first fixing portion 432: second fixed part

A. B: driving force transmission direction

Possibility of industrial utilization

The cordless blind device of the present invention can be very conveniently operated without a cord, and has an advantage that the device can be operated by selecting various operation modes such as manual, semi-automatic, etc. as needed without a cord by using a driving structure implemented in the device. Therefore, according to the present invention, it is possible to easily operate the apparatus by solving the structural and functional problems and inconvenience in use, which are originally caused by the use of the cord, and it is also possible to appropriately operate the apparatus in various manners such as manual, semi-automatic, and automatic according to circumstances, and thus the industrial applicability of the present invention is very high.