Classifications

• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
  • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
  • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
  • E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
  • E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
  • E06B9/32—Operating, guiding, or securing devices therefor
  • E06B9/322—Details of operating devices, e.g. pulleys, brakes, spring drums, drives
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47H—FURNISHINGS FOR WINDOWS OR DOORS
  • A47H5/00—Devices for drawing draperies, curtains, or the like
  • A47H5/02—Devices for opening and closing curtains
  • A47H5/032—Devices with guiding means and draw cords
  • A47H5/0325—Devices with guiding means and draw cords using electrical or electronical drive, detecting or controlling means
• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
  • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
  • E06B9/68—Operating devices or mechanisms, e.g. with electric drive
  • E06B9/70—Operating devices or mechanisms, e.g. with electric drive comprising an electric motor positioned outside the roller
• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
  • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
  • E06B9/68—Operating devices or mechanisms, e.g. with electric drive
  • E06B9/74—Operating devices or mechanisms, e.g. with electric drive adapted for selective electrical or manual operation
• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
  • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
  • E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
  • E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
  • E06B9/84—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic against dropping

Definitions

• the present application relates to the technical field of household goods, and in particular, to a driving device for an electric curtain, and an electric curtain having the driving device.
• Electric curtains such as electric window curtains
• An electric curtain generally uses an electric drive system to control up and down movement of a curtain, that is, uses a motor to drive a driven wheel to rotate, and drive movement of a pulling rope through rotation of the driven wheel, thereby achieving up and down movement of the curtain.
• electric curtains generally only have an electric drive function, that is, the curtains can only be driven to rise up and fall down by motors.
• the electric curtain cannot meet the requirements. If a user wants to manually pull a pulling rope to move at this time, the pulling rope, when moving, needs to drive gears, motors, and so on in the electric drive system to move together. This process requires applying a very large pulling force to the rope, which not only has poor use experience but may also cause damage to the electric drive system.
• traditional electric curtain structures generally lack anti-drop designs and tension designs for pulling ropes, which are prone to cause adverse effects on use experience.
• a main purpose of the present application is to provide a driving device for an electric curtain, which can realize free switching between driving a curtain by a motor and manually driving a curtain, and does not need to drive a driving motor and a transmission assembly to move synchronously when manually driving the curtain; not only can manually driving the curtain be easily realized, thereby saving time and work, but also damage of driving mechanisms will not be caused.
• Another aspect of purpose of the present application is to provide anti-drop design and tension design for pulling ropes for electric curtains, thereby improving use experience.
• an embodiment of one aspect of the present application provides a driving device comprising: a driven wheel configured to connect a pulling rope; a driving mechanism configured to drive the driven wheel to rotate, wherein the driving mechanism comprises a driving motor, an output shaft, and a transmission assembly, the transmission assembly is connected between the driving motor and the output shaft, and the output shaft is connected to the driven wheel; the output shaft has preset first and second states, when the output shaft is in the first state, the output shaft is coupled to the driven wheel and the transmission assembly respectively, so that the output shaft is connected to the driven wheel and the transmission assembly in a transmission way respectively; when the output shaft is in the second state, the output shaft is decoupled from the driven wheel and/or the transmission assembly, so that there is no transmission connection between the output shaft and the driven wheel and/or the transmission assembly.
• the transmission assembly comprises an output gear, the output gear is connected to a drive shaft of the driving motor in a transmission way, and the output gear is sleeved on the output shaft; the output shaft is capable of moving to extend and contract along its axial direction relative to the output gear, so that the output shaft is coupled with or decoupled from the output gear; when the output shaft is coupled with the output gear, the output shaft is fixed to the output gear along its circumference, so that the output shaft can rotate along with the output gear; when the output shaft is decoupled from the output gear, the output shaft can rotate along its circumference relative to the output gear, so that the output shaft does not rotate along with the output gear; and/or the driven wheel is sleeved on the output shaft, and the output shaft is capable of moving to extend and contract relative to the driven wheel along its axial direction; when the output shaft moves to extend and retract relative to the driven wheel, the output shaft remains being coupled with the driven wheel; and/or the output shaft comprises a second flat shaft, and the driven wheel is provided with
• the output shaft is provided with a first engagement structure
• the output gear is provided with a second engagement structure
• the first engagement structure when the output shaft moves to extend and retract relative to the output gear, the first engagement structure is capable of engaging with or disengaging from the second engagement structure to make the output shaft be coupled with or decoupled from the output gear; and/or the first engagement structure comprises one of a first flat shaft and a first flat hole that are adapted, and the second engagement structure comprises the other of the first flat shaft and the first flat hole that are adapted.
• the transmission assembly further comprises a transmission gear and an intermediate gear
• the drive shaft of the driving motor is provided with a motor gear
• the motor gear meshes with the transmission gear
• the transmission gear meshes with the intermediate gear
• the intermediate gear meshes with the output gear
• the transmission gear comprises a crown gear
• the intermediate gear comprises a flat gear
• the driving mechanism further comprises a clutch member connected to the output shaft; operating the clutch member is capable of making the output shaft be in the first state or the second state; and/or the driving mechanism further comprises a first elastic member, the first elastic member is connected to the output shaft, and the first elastic member is configured to drive the output shaft to transit from the second state to the first state through elastic force; and/or the clutch member and the first elastic member are respectively arranged at two opposite ends of the output shaft; pressing the clutch member is capable of pushing the output shaft to move towards a side close to the first elastic member and making the output shaft to transit from the first state to the second state; the first elastic member is capable of storing force under squeezing action of the output shaft at the same time, so that the first elastic member drives the output shaft to transit from the second state to the first state through elastic force after losing the squeezing action of the output shaft; and/or the clutch member is rotatably connected to an end of the output shaft, and the output shaft is rotatable relative to the clutch member.
• the electric curtain further comprises a curtain anti-drop device;
• the curtain anti-drop device comprises: an anti-drop structure comprising a clamping arm; a power structure comprising a front housing, wherein the driven wheel is rotatably connected to the front housing, the driven wheel is configured to mesh with the pulling rope and further used to drive the pulling rope to rotate; wherein the clamping arm is rotatably connected to the front housing, and the clamping arm is configured to press the pulling rope against the driven wheel.
• the number of clamping arm is at least two, and the at least two clamping arms are arranged on opposite sides of the driven wheel; or the number of clamping arm is one, and the clamping arm surrounds an outer side of the driven wheel; and/or the driven wheel defines multiple snap slots along a circumference thereof, the snap slots are configured to engage with the pull rope; and/or the clamping arm comprises a connection part and a clamping part that are connected to each other, the connection part is rotatably connected to the front housing, and the clamping part bends and extends towards a direction close to the driven wheel; and/or the clamping part is provided with a convex strip, the convex strip is arranged at a side of the clamping part near the driven wheel, and the convex strip is configured to press the pulling rope against the driven wheel; and/or the connection part is provided with a convex post, the convex post is arranged at a side of the connection part near the housing; the front housing is provided with a rotation groove, and the conve
• the electric curtain further comprises a tension adjusting device configured to tension the pulling rope
• the tension adjusting device comprises: an outer housing configured to fixed to a wall; a tension structure comprising a first wheel and a second wheel, wherein the first wheel is movably connected to the outer housing, the second wheel is connected to the outer housing, the first wheel and the second wheel are sequentially arranged along a length direction of the outer housing, and the first wheel and the second wheel are configured for winding the pulling rope; and a driving structure connected to the first wheel, wherein the driving structure is configured to drive the first wheel to move along a width direction of the outer housing.
• the number of second wheel is multiple; along a length direction of the outer housing, the multiple second wheels are respectively arranged at both two sides of the first wheel; along a width direction of the outer housing, the multiple second wheels are arranged at the same side of the first wheel; and/or the length direction and the width direction define a first plane, a projection center of the first wheel on the first plane is a first center, projection centers of the multiple second wheels on the first plane are second centers, along the length direction, an included angle between connection lines from the first center to the second centers at two sides thereof is ⁇ ; when the first wheel moves along the width direction of the outer housing, 160° ⁇ 250°; and/or a diameter of the first wheel is greater than a diameter of the second wheel; and/or an outer side of the first wheel recesses inward to form a first limiting slot, and/or an outer side of the second wheel recesses inward to form a second limiting slot; the first limiting slot and the second limiting slot are configured to limit the pulling rope; and/or the first wheel
• the output shaft since the output shaft has the first state and the second state, when the output shaft is in the first state, the output shaft is coupled with the driven wheel and the transmission assembly respectively, that is, the output shaft is connected to the driven wheel and the transmission assembly in a transmission way respectively; at this time, the driving motor can drive the driven wheel to rotate through the transmission assembly and the output shaft, thereby driving the pulling rope to move and realizing the function of driving the curtain by the motor; when the clutch member is operated so as to make the output shaft to transit from the first state to the second state, the output shaft is decoupled from the driven wheel and/or the transmission assembly, that is, there is no transmission between the output shaft and the driven wheel and/or the transmission assembly; when the pulling rope is manually pulled to move, the driven wheel will rotate along with the pulling rope, but the transmission assembly and the driving motor will not move synchronously, that is, the clutch function of the driving device is realized; at this time, the pulling rope can be easily pulled, and damage of the driving mechanism will not be caused.
• This driving device can realize free switching between driving a curtain by a motor and manually driving a curtain, and does not need to drive the driving motor and the transmission assembly to move synchronously when manually driving the curtain, not only can manually driving the curtain be easily realized, thereby saving time and work, but also damage of the driving mechanism can be avoided.
• the driving device can further include a curtain anti-drop device and a tension adjusting device for the pulling rope, thereby further improving use experience.
• a preferred embodiment of the present application provides a driving device suitable for an electric curtain, such as an electric window curtain.
• the driving device includes: a driven wheel 1 configured to connect a pulling rope 2, wherein the driven wheel 1 can move synchronously with the pulling rope 2, and the type of the pulling rope 2 is As an implementation a bead pulling rope; a driving mechanism 3 configured to drive the driven wheel 1 to rotate, wherein the driving mechanism 3 includes a driving motor 31, an output shaft 33, and a transmission assembly 32, the transmission assembly 32 is connected between the driving motor 31 and the output shaft 33, and the output shaft 33 is connected to the driven wheel 1.
• the output shaft 33 has a first state (i.e., a coupled state) and a second state (i.e., a decoupled state), and can switch between the two states; when the output shaft 33 is in the first state, the output shaft 33 is coupled to the driven wheel 1 and the transmission assembly 32 respectively, so that the output shaft 33 is connected to the driven wheel 1 and the transmission component 32 in a transmission way respectively; when the output shaft 33 is in the second state, the output shaft 33 is decoupled from the driven wheel 1 and/or the transmission assembly 32, so that there is no transmission between the output shaft 33 and the driven wheel 1 and/or the transmission assembly 32; and a clutch member 4 connected to the output shaft 33, wherein operating the clutch member 4 can make the output shaft 33 be in the first state or the second state.
• a first state i.e., a coupled state
• a second state i.e., a decoupled state
• the output shaft 33 can be transited from the first state to the second state; of course, in other embodiments, it is also possible to operate the clutch member 4 to make the output shaft 33 to transit from the second state to the first state; alternatively, by operating the clutch member 4, it is possible to make the output shaft 33 to be switched between the first state and the second state.
• This driving device can realize free switching between driving a curtain by a motor and manually driving a curtain, and does not need to drive the driving motor 31 and the transmission assembly 32 to move synchronously when manually driving the curtain; not only can manually driving the curtain be easily realized, thereby saving time and work, but also damage of the driving mechanism 3 can be avoided.
• the locking mechanism may be, for example, an engagement mechanism
• the locking mechanism may be, for example, an engagement mechanism
• Both the driven wheel 1 and the clutch assembly 4 are located outside the housing 35, the clutch member 4 is arranged at a distal end of the second end of the output shaft 33, the driven wheel 1 is sleeved on the output shaft 33, and the driven wheel 1 is located between the clutch member 4 and an outer wall of the housing 35; there is a gap between the driven wheel 1 and the outer wall of the housing 35.
• the housing 35 can provide good protection for the transmission assembly 32 to prevent damage occurs on the transmission assembly 32. Since the pulling rope 2 is connected to the driven wheel 1, and the driven wheel 1 is arranged outside the housing 35, the pulling rope 2 is also located outside the housing 35, so that the pulling rope 2 does not need to extend out from the housing 35, which simplifies the structural design and can ensure sealing of the housing 35. Since the clutch member 4 is located outside the housing 35, it is convenient for users to press the clutch member 4 by hands.
• the driving motor 31 is arranged outside the housing 35 (specifically, the driving motor 31 is arranged below the housing 35, and the driving motor 31 is fixedly connected to the bottom of the housing 35 through a second screw bolt 382).
• the driving shaft 310 of the driving motor 31 extends into the housing 35 and is connected to the transmission gear 322 in a transmission way through the motor gear 311.
• the driving motor 31 can also be provided inside the housing 35.
• a first accommodation groove 12 is provided at a position corresponding to the clutch member 4 on the driven wheel 1.
• the first accommodation groove 12 is configured to avoid the clutch member 4, so as to prevent the clutch assembly 4 from generating interference with the driven wheel 1 when it is pressed and moves towards the side close to the driven wheel 1 (that is, when pressing the clutch member 4, the clutch member 4 can move into the first accommodation groove 12).
• a second accommodation groove 353 is provided at a position corresponding to the output shaft 33 on the inner wall of the housing 35, two ends of the first elastic member 34 abut the output shaft 33 and the inner wall of the second accommodation groove 353 respectively.
• the second accommodation groove 353 can avoid the output shaft 33, so as to prevent the output shaft 33 from generating interference with the inner wall of the housing 35 when it is moves towards the side away from the clutch member 4 (that is, when the output shaft 33 moves towards the side away from the clutch member 4, an end of the output shaft 33 can be accommodated into the second accommodation groove 353).
• a gasket 37 is provided between the first elastic member 34 and the inner wall of the housing 35, the gasket 37 can avoid the first elastic member 34 from directly contacting the inner wall of the housing 35 and causing wearness of the housing 35.
• a sliding bearing 36 is sleeved on the output shaft 33, and the output shaft 33 is connected to the housing 35 through the sliding bearing 36, so that the output shaft 33 can move to extend and retract and rotate relative to the housing 35 more smoothly.
• the driving device further includes a base 5, the driving mechanism 3 is arranged inside the base 5, and the driving mechanism 3 is fixedly connected to the base 5.
• An outer wall of the base 5 is provided with an assembly groove 51, and both the driven wheel 1 and the clutch member 4 are located in the assembly groove 51; an end of output shaft 33 extends into the assembly groove 51 and is connected to driven wheel 1 and clutch member 4.
• the driving device has two modes: motor driving and manual driving.
• the working principles of the two modes are as follows:
• the output shaft 33 is in the first state, that is, the output shaft 33 is coupled with the driven wheel 1 and the output gear 321 at the same time.
• the driving motor 31 can drive the driven wheel 1 to rotate through the transmission assembly 32 and the output shaft 33, and then drive the pulling rope 2 to move, thereby achieving the function of driving the curtain to raise up and fall down by the motor.
• the pulling rope 2 is a bead pulling rope
• the driven wheel 1 is a sprocket.
• the pulling rope 2 is wound on the driven wheel 1, and the pulling rope 2 meshes with the driven wheel 1 (i.e. the beads of the pulling rope 2 are stuck between the teeth of the driven wheel 1).
• the structures and the coordination relationship of the pulling rope 2 and the driven wheel 1 can refer to existing technology and will not be elaborated here. Of course, in other embodiments, the pulling rope 2 and the driven wheel 1 can also have other structures.
• the driving device 10 includes a transmission part, the transmission part is connected to the curtain body.
• the transmission part includes the transmission assembly 32 and the driven wheel 1, the driven wheel 1 is configured to wind the pulling rope 2, and the pulling rope 2 is connected to the curtain body.
• the curtain body can directly adopt structural types in the existing technology, and the specific structure of the curtain body is not elaborated here.
• the output shaft 33 of the driving device 10 is connected to the driven wheel 1 in a transmission way.
• the output shaft 33 of the driving device 10 drives the driven wheel 1 to rotate, and the driven wheel 1 drives the pulling rope 2 to move, thereby achieving opening and closing of the curtain body through the pulling rope 2.
• the pulling rope 2 is manually operated by a user; the pulling rope 2 drives the driven wheel 1 to rotate, and the driven wheel 1 reversely drives the output shaft 33 of the driving device 10 to rotate.
• the present application in the following embodiment, has improved other structures in the driving device 10 except the transmission assembly 32.
• the driving device 10 includes a housing 35, a transmission wheel assembly 200 (in this embodiment, the transmission wheel assembly 200 is equivalent to the transmission assembly 32), a clutch assembly 300, and a driving motor 31; the housing 35 is configured to accommodate the transmission wheel assembly 200 and the clutch assembly 300, and is further configured to fix the transmission wheel assembly 200.
• the transmission wheel assembly 200 is arranged inside the housing 35, and the transmission wheel assembly 200 includes a first transmission wheel group 210 and a second transmission wheel group, the driving motor is connected to the first transmission wheel group 202, the first transmission wheel group 210 meshes with the second transmission wheel group 202; the clutch assembly 300 movably meshes with the second transmission wheel group 202; the driving motor 31 is connected to the first transmission wheel group 210 and configured to drive the first transmission wheel group 210 to move; the output shaft 33 is connected to the second transmission wheel group 202, and the driven wheel 1 is connected to the output shaft 33 and configured to connect with an external pulling rope, such as the pulling rope 2.
• the second transmission wheel group 202 is switched between a first state and a second state in response to movement of the clutch assembly 300; in the second state, the second transmission wheel group 202 rotates in response to rotation of the driven wheel 1, so as to realize that the driven wheel 1 drives the curtain body to move under action of external manually driving force coming from the external pulling rope; in the first state, the second transmission wheel group 202 drives the driven wheel 1 in response to rotation of the first transmission wheel group 210, and thereby drives the curtain body to move.
• the first state and the second state in this embodiment are respectively equivalent to the first state and the second state in the aforesaid embodiment shown in FIG. 1 to FIG. 12b
• the clutch assembly 300 in this embodiment is another implementation of the clutch member 4 in the aforesaid embodiment shown in FIG. 1 to FIG. 12b , the two embodiments can realize similar technical effect.
• a user when manual driving of the curtain body is required, a user can move the clutch assembly 300 to make the second transmission wheel group 202 switch from the first state to the second state in response to the movement of the clutch assembly 300.
• the second transmission wheel group 202 rotates in response to rotation of the driven wheel 1, and the driven wheel 1 can drive the curtain body to move under action of the external manual driving force coming from the external pulling rope, thereby achieving manual opening and closing of the curtain body.
• the clutch assembly 300 can be reset, so that the second transmission wheel group 202 switches from the second state to the first state in response to the movement of the clutch component 300.
• the driving motor 31 can drive the first transmission wheel group 210 to move, and the second transmission wheel group 202 responds to rotation of the first transmission wheel group 210 to drive the driven wheel 1, thereby driving the curtain body to move and achieving electric opening and closing of the curtain body. Therefore, the above electric curtain has two curtain body operation working modes of electrically driving the curtain body to operate and manually driving the curtain body to operate, and manually driving the curtain body is convenient and labor-saving in operation, with low failure rate and good user experience.
• the second transmission wheel group 202 includes a planetary wheel group 220, an annular gear 230, and a planet carrier 240
• the planetary wheel group 220 is located inside the annular gear 230
• the planetary wheel group 220 meshes with the annular gear 230
• the planetary wheel group 220 further meshes with the first transmission wheel group 210
• the planetary carrier 240 is connected with the first transmission wheel group 210
• the planetary carrier 240 is further connected with the planetary wheel group 220
• the planetary carrier 240 forms the output shaft 33, and the output shaft 33 is connected with the driven wheel 1.
• the clutch assembly 300 is arranged between an outer wall of the annular gear 230 and the housing 35, and the clutch assembly 300 can move between the annular gear 230 and the housing 35.
• the driving motor 31 is connected to the first transmission wheel group 210, and the driving motor 31 is configured to drive the first transmission wheel group 210 to move.
• the driving device 10 has the first state and the second state, and the annular gear 230 switches between the first state and the second state in response to movement of the clutch assembly 300; in the second state, the annular gear 230 is rotatable relative to the housing 35, so that the driven wheel 1, the planetary carrier 240, the annular gear 230, and the planetary wheel group 220 form a power system, the annular gear 230 rotates in response to rotation of the planetary carrier 240, the planetary wheel group 220 rotates under drive of the planetary carrier 240 at this time, so as to realize that the driven wheel 1 drives the curtain body to move under action of external manual driving force, wherein the external manual driving force can be manually pulling the curtain body by a user.
• the annular gear 230 is fixed to the housing 35, the driving motor 31, the first transmission wheel group 210, the planetary wheel group 220, the planetary carrier 240, and the driven wheel 1 form a power system, the planetary wheel group 220 rotates in response to rotation of the first transmission wheel group 210 , then the planetary wheel group 220 drives the planetary carrier 240 to move, thereby driving the curtain body to move through the driven wheel 1.
• the housing 35 includes a front housing 351, a rear housing 352, a partition plate 130, and a cover plate 140.
• the cover plate 140 is fixed to the rear housing 352 by multiple first screws 150, and the rear housing 352 is fixedly connected to the front housing 351 by multiple second screws 160 to form a storage space for the transmission wheel assembly 200 and the clutch assembly 300.
• the partition plate 130 is fixed to the rear housing 352 to separate the first transmission wheel group 210 from the planetary wheel group 220.
• an end of the planetary carrier 240 has a first shaft end 242 and multiple second shaft ends 243
• the planetary carrier 240 is mounted on the rear housing 352 through a first bearing 170 and a second bearing 180
• the multiple second shaft ends 243 surround an outer side of the first shaft end 242
• another end of the planetary carrier 240 forms the output shaft 33.
• the driving motor 31 can be a motor or a combination of a motor and a reduction mechanism to provide rotational power
• a distal end of the first transmission wheel group 210 is mounted on the front housing 351 through a third bearing 190 to facilitating rotatable mounting of the first transmission wheel group 210.
• the first transmission wheel group 210 has multiple kinds of structural types.
• the first transmission wheel group includes a worm wheel 211, a worm rod 212, a first gear 213, a second gear 214, and a sun gear 215.
• the worm rod 212 is connected to an output end of the driving motor 31, and the worm rod 212 meshes with the worm wheel 211.
• the first gear 213 is coaxially connected to the worm wheel 211 through a third rotation shaft 216, and the first gear 213 and the worm wheel 211 are mounted on the housing 35 through the third rotation shaft 216, the first gear 213 and the worm wheel 211 can rotate around an axis of the third shaft rotation 216 relative to the housing 35.
• the second gear 214 is mounted on the housing 35 through a fourth rotation shaft 217, and the second gear 214 is rotatable relative to the housing 35, the second gear 214 meshes with the first gear 213.
• the sun gear 215 has a large annular gear 2151 and a small annular gear 2152, the sun gear 215 is mounted on the first shaft end 242 of the planetary carrier 240 by means of embedding, key connection, etc., the large annular gear 151 of the sun gear 215 meshes with the second gear 214, and the small annular gear 2152 of the sun gear 215 meshes with the planetary gear group 220.
• the driving motor 31 inputs power, the power is transmitted through worm gear 211 and worm rod 212 to achieve a first stage of power transmission and direction change; the power continues to be transmitted through the first gear 213, the second gear 214, and the large annular gear 2151 to achieve second and third stages of transmission in the same direction; then the power is transmitted to planetary gear set 220 through the small annular gear 2152 to achieve a fourth stage of power transmission, so that the driving motor 31 can conveniently and reliably drive the planetary gear group 220.
• the planetary gear group 220 has multiple kinds of structural types. Specifically, referring to FIG. 3 and FIG. 4 , the planetary gear group 220 includes multiple planetary gears 221, the multiple planetary gears 221 are rotatably mounted on the second shaft ends 243 of the planet carrier 240 by means of embedding, key connection, etc.; the multiple planetary gears 221 are evenly distributed in the annular gear 230, and the multiple planetary gears 221 mesh with the annular gear 20 respectively; the multiple planetary gears 221 surround an outside the small annular gear 2152 of the sun gear 215, and the multiple planetary gears 221 mesh with the small annular gear 2152 of the sun gear 215 respectively.
• the planetary gears 221 also mesh with the inner side of the annular gear 230, and the annular gear 230 is fixed at this time, so the planetary gears 221 will revolve around the sun gear 215 inside the annular gear 230.
• the multiple planetary gears 221 are rotatably mounted on the second shaft ends 243 of the planetary carrier 240, when the multiple planetary gears 221 revolve around the sun gear 215, they will also drive the planetary carrier 240 and the output shaft 33 of the planetary carrier 240 to rotate together.
• the output shaft 33 of the planetary carrier 240 will also drive the driven wheel 1 to rotate together, so that the driven wheel 1 drives the pulling rope 2 to move, thereby driving the curtain body to open and close.
• manually pulling the the clutch assembly 300 can be always maintained, so that the clutch assembly 300 and the annular gear 230 are always in the second state.
• a limit piece that cooperates with the clutch assembly 300 can also be provided. After manually pulling the clutch assembly 300 once, the clutch assembly 300 cooperates with the limit piece to make the clutch assembly be kept in the second state. At this time, there is no need to keep manually pulling the clutch assembly 300, which can free up a palm of the user and make manually driving the pulling rope 2 be more convenient.
• connection part 111A further includes a rolling sleeve 116A, the rolling sleeve 116A is sleeved on an outer circumference of the rotation element 13A and located in the second mounting groove 115A.
• the rotation element 13A is inserted into the first mounting groove 211A of the front housing 351 first, the rolling sleeve 116A is placed in the second mounting groove 115A, and then both the rolling sleeve 116A and the connection part 111A are sleeved on the outer circumference of the rotation element 13A to finish the rotatable connection between the clamping arm 11A and the front housing 351; the arrangement of the rolling sleeve 116A can reduce wearness of the clamping arm 11A when it rotates relative to the rotation element 13A, thereby extending the mechanical life of the clamping arm 11A.
• the electric curtain further includes a rotation shaft and a curtain body arranged on the rotating shaft.
• the power member 3B includes a driven wheel 1 and a driving motor, and an output end of the driving motor is connected to the driven wheel 1.
• both the power member 3B and the tension adjusting device 1B can be fixed to a wall.
• An end of the pulling rope 2 is wound on the driven wheel 1 and meshes with the driven wheel 1, and another end is connected to the rotation shaft.
• the driving motor drives the driven wheel 1 to rotate, the driven wheel 1 drives the pulling rope 2 to rotate, and the pulling rope 2 drives the rotation shaft to rotate, thereby achieving opening and closing of the curtain body.
• the tension degree of the pulling rope 2 can be adjusted by the tension adjusting device 1B, so that the pulling rope 2 meshes with the driven wheel 1 again to ensure that the electric curtain meets its normal use function.
• the pulling rope 2 is usually a circular chain structure, with multiple beads or spheres connected in series on the chain; the driven wheel 1 is provided with multiple snap slots along its circumferential direction, the snap slots are configured to engage with the beads or spheres on the pulling rope 2 to achieve meshing between the pulling rope 2 and the driven wheel 1.
• the X direction represents a length direction
• the Y direction represents a width direction
• the outer housing 11B is fixed to a wall
• the first wheel 121B and the second wheel 122B are arranged on a side of the outer housing 11B facing away from the wall.
• the pulling rope 2 is sequentially wound around the first wheel 121B and the second wheel 122B, and meshes with the driven wheel 1. Since the first wheel 121B can move along the width direction of the outer housing 11B, a length of the pulling rope 2 wound around the first wheel 121B and the second wheel 122B can be adjusted by movement of the first wheel 121B.
• the pulling rope 2 When the pulling rope 2 is subjected to force, which causes its circumference to increase, the pulling rope 2 naturally falls under its own weight and disengages from the driven wheel 1; at this time, the first wheel 121B can be driven to move by the driving structure 13B, and the first wheel 121B tightens the pulling rope 2. Specifically, the first wheel 121B moves towards a direction away from the second wheel 122B, which makes the length of the pulling rope 2 wound around the first wheel 121B and the second wheel 122B become longer. In this way, a distance between the pulling rope 2 and the driven wheel 1 is shortened, and the pulling rope 2 meshes with the driven wheel 1 again, so that the driven wheel 1 can drive the pulling rope 2 to rotate and achieve the normal opening and closing function of the electric curtain.
• the tension adjusting device 1B of the present application drives the first wheel 121B to move through the driving structure 13B, so as to adjust the length of the pulling rope 2 wound around the first wheel 121B and the second wheel 122B, thereby playing the role of tensioning the pulling rope 2 and preventing the circumference of the pulling rope 2 from becoming longer and detaching from the driven wheel 1.
• the electric curtain using this tension adjusting device 1B is simpler in structure, and the tension adjusting device 1B and the power member 3B are independent of each other, their mounting and maintenance do not interfere with each other, thereby simplifying the overall structure of the electric curtain and facilitating assembly.
• the tension adjusting device 1B prevents the pulling rope 2 from detaching from the power member 3B, thereby ensuring the normal opening and closing function of the electric curtain.
• the number of second wheel 122B can be multiple; along a length direction of the outer housing 11B, the multiple second wheels 122B are respectively arranged at both two sides of the first wheel 121B; furthermore, in an initial state, along a width direction of the outer housing 11B, the multiple second wheels 122B are arranged at the same side of the first wheel 121B.
• the number of the second wheel 122B is at least one.
• the number of second wheel 122B is further set to be multiple, and the multiple second wheels 122B are respectively arranged at two sides of the first wheel 121B along the length direction, so that the first wheel 121B is located among the multiple second wheels 122B, the length of the pulling rope 2 wound between the first wheel 121B and the second wheel 122B is longer, so the length of the pulling rope 2 that can be adjusted by the tension adjusting device 1B is also larger.
• the driving structure 13B drives the first wheel 121B to move, the second wheels 122B located on both sides of the first wheel 121B are wound with the pulling rope 2.
• the multiple second wheels 122B can be symmetrically arranged at two sides of the first wheel 121B along the length direction, and the multiple second wheels 122B are located at the same straight line along the length direction, so that the tension force degrees of the first wheel 121B on the pulling rope 2 at two sides thereof are consistent, and the force applied on the pulling rope 2 is more balanced.
• the pulling rope 2 can just contact the first wheel 121B and the second wheels 122B, and will not be tensioned by the first wheel 121B and the second wheels 122B. At this time, the pulling rope 2 is in a natural hanging state, thereby avoiding the tension adjusting device 1B from affecting the normal operation of the pulling rope 2 in the initial state. Moreover, when it is necessary to tighten the pulling rope 2, a user can directly drive the first wheel 121B to move through the driving structure 13B, thereby achieving the function of tightening the pulling rope 2 and making the operation be more convenient.
• an outer side of the second wheel 122B can also recess inward to form a second limiting slot 1223B.
• the second limiting slot 1223B provides limiting function for the pulling rope 2 to prevent the pulling rope 2 from detaching from the second limiting slot 1223B during movement and thereby causing the pulling rope 2 to detach from the second wheel 122B.
• the pulling rope 2 is prevented from detaching from the first wheel 121B and the second 122B, thereby avoiding affecting the tension function of the tension adjusting device 1B for the pulling rope 2.
• the first wheel 121B includes a first limiting part 1211B and a first roller part 1212B, the first roller part 1212B is connected to the outer housing 11B, the first limiting part 1211B is connected to the top of the first roller part 1212B, and a projection of the first limiting part 1211B on the first plane covers a projection of the first roller 1212B part on the first plane.
• the first roller part 1212B can be provided with the first limiting slot 1213B, and the pulling rope 2 is wound around the first roller part 1212B and located inside the first limiting slot 1213B.
• a cross-section of the first limiting part 1211B is larger than a cross-section of the first roller part 1212B, and the first limiting part 1211B is located at the top of the first roller part 1212B.
• the first limiting part 1211B plays a limiting role on the pulling rope 2 to prevent the pulling rope 2 from coming out of the top of the first wheel 121B, and further limits the detachment of the pulling rope 2 from the first wheel 121B.
• the second wheel 122B can also include a second limiting part 1221B and a second roller part 1222B, the second limiting part 1221B is connected to the outer housing 11B, and the second limiting part 1221B is connected to the top of the second roller part 1222B; a projection of the second limiting part 1221B on the first plane covers a projection of the second roller part 1222B on the first plane.
• the second roller part 1222B can be provided with the second limiting slot 1223B, and the pulling rope 2 is wound around the second roller part 1222B and located inside the second limiting slot 1223B.
• the tension structure 12B further includes a first fixing post 123B corresponding to the first wheel 121B and at least one second post 124B corresponding to the second wheel 122B.
• the tension structure 12B can include multiple second fixing posts 124B corresponding to the multiple second wheels 122B, the first fixing post 123B is movably connected to the outer housing 11B and is connected to the driving structure 13B, the second fixing posts 124B are connected to the outer housing 11B; the first wheel 121B is sleeved on the first fixing post 123B, and the second wheels 122B are sleeved on the second fixing posts 124B; the first wheel 121B rotatably cooperates with the first fixing post 123B, and the second wheels 122B rotatably cooperate with the second fixing post 124B.
• the first fixing post 123B is movably connected to the outer housing 11B, and the driving structure 13B drives the first fixing post 123B to move along the width direction of the outer housing 11B.
• the first fixing post 123B drives the first wheel 121B to move along the width direction of the outer housing 11B to achieve the function of tensioning the pulling rope 2.
• the second fixing posts 124B are fixedly connected to the outer housing 11B, and the second wheels 122B are sleeved on the second fixing posts 124B to achieve the connection between the second wheels 122B and the outer housing 11B through the second fixing posts 124B.
• each second fixing member 126B is inserted in one of the second fixing posts 124B and connected to second fixing post 124B, and another end extends out of the second fixing post 124B to abut against one of the second wheels 122B.
• the second fixing members 126B restricts the detachment of the second wheels 122B from the second fixing posts 124B, thereby preventing the second wheels 122B from detaching from the outer housing 11B.
• the first fixing member 125B and the second fixing members 126B can adopt screw bolts or rivets.
• the driving structure 13B includes a rotation member 131B, the rotation member 131B is rotatably connected to the outer housing 11B.
• the outer housing 11B is provided with a moving slot 113B along its width direction.
• the tension structure 12B is slidably connected to the moving slot 113B and connected with the rotation member 131B by thread.
• the driving structure 13B of the present application uses the rotation member 131B to drive the first wheel 121B to move.
• the first wheel 121B is driven to move relative to the outer housing 11B.
• the rotation member 131B can be manually driven, which can accurately adjust a travel distance of the first wheel 121B and thus adjust the tightness degree of the pulling rope 2 more accurately.
• the driving structure 13B can also adopt other manners, such as electric telescopic rods, which are not limited in the present application.
• the driving structure 13B further includes a limiting member 133B, the limiting member 133B is arranged at an end of the rotation member 131B and configured to abut against the outer surface of the outer housing 11B to prevent the rotation member 131B from separating from the outer housing 11B.
• the first fixing post 123B is slidably connected to the moving slot 113B and connected with the rotation member 131B by thread.
• the first wheel 121B is sleeved on the first fixing post 123B.
• the rotation member 131B drives the first wheel 121B to move along the width direction of the outer housing 11B.
• the first fixing post 123B is driven to slide along the moving slot 113B, and then the first fixing post 123B drives the first wheel 121B to slide along the moving slot 113B, thereby achieving the effect of tensioning the pulling rope 2.
• the driving structure 13B further includes an operation member 132B, an end of the rotation member 131B extends from the outer housing 11B and is connected with the operation member 132B, and another end of the rotation member 131B is rotatably connected to the outer housing 11B.
• the operation member 132B is used for gripping. In practical use, a cross-sectional area of the operation member 132B is larger than a cross-sectional area of the rotation member 131B. Users hold the operation member 132B and drives the rotation member 131B to rotate by rotating the operation member 132B.
• the operation member 132B provides a position convenient for users to hold and apply force.
• an outer surface of the operation member 132B is provided with multiple anti-slip parts 1321B along its circumference.
• the anti-slip parts 1321B play a role in anti-slip to increase the friction force for users to rotate the operation member 132B and prevent slipping, thereby facilitating users to rotate the operation member 132B and thus drive the rotation member 131B to rotate.
• the outer housing 11B includes a first housing 111B and a second housing 112B.
• the first housing 111B is detachably connected with the second housing 112B.
• the first wheel 121B is movably connected to the second housing 112B, and the second wheels 122B are connected to the second housing 112B.
• the first housing 111B is configured to connect with a wall. Among them, a length of the first housing 111B is greater than a length of the second housing 112B, and/or a width of the first housing 111B is greater than a width of the second housing 112B.
• the first housing 111B is configured to fixedly connect with a wall
• the second housing 112B is configured for connection with the first wheel 121B and the second wheels 122B.
• a projection area of the second housing 112B is set to be smaller than a projection area of the first housing 111B, which is beneficial for mounting of the first shell 111B with the wall on one hand, and reduces the overall design size of the outer housing 11B by reducing the size of the second housing 112B on the other hand, thereby saving design cost.
• first housing 111B and the second housing 112B can be detachably connected using screw bolts and the like, this arrangement is convenient for repairing and mounting.

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• Structural Engineering (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Curtains And Furnishings For Windows Or Doors (AREA)

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• 2025
  • 2025-07-22 EP EP25190978.4A patent/EP4628697A3/de active Pending
  • 2025-07-22 US US19/276,023 patent/US20260020708A1/en active Pending

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