CN212261101U - Window curtain - Google Patents

Abstract

The utility model discloses a curtain, which comprises a curtain body, a transmission device and a speed reducer. The transmission device is connected with the curtain body, the speed reducer comprises a motor, a gear box and a PCB, the motor and the transmission device are in transmission connection with the gear box, and the PCB is electrically connected with the motor. The gear box comprises a gear set, the gear set comprises a sun gear, a planet gear and a support, the sun gear is meshed with the planet gear and is mounted on the support, and the support and the planet gear can rotate around a central shaft of the sun gear; the planetary gear has initial position and operating position, and the PCB board can control the motor and drive the planetary gear and switch between initial position and operating position, and when the planetary gear was located initial position, the planetary gear set up with the transmission interval, and when the planetary gear was located operating position, the planetary gear was connected with the transmission.

Description

Window curtain

Technical Field

The utility model relates to a mechanical transmission technical field especially relates to a (window) curtain.

Background

The gear box is widely used in daily production and life as a mechanical transmission device, and particularly has remarkable advantages in application scenes of accelerating and decelerating, changing transmission direction, changing rotating torque, realizing a clutch function or distributing power and the like.

With the development of curtains, it has become an indispensable indoor decoration for a living room with perfect combination of functionality and decoration. Under the large environment of the existing automatic control, the curtain has an automatic control mode, the curtain can be driven to lift or open and close by a motor through automatic control methods such as remote control and the like, at the moment, a speed reducer is required to adjust the transmission relation between the rotating speed of the motor and the speed of the curtain, but under the scene of power failure and the like requiring manual control of the curtain, the flexibility and the accuracy of manual control are influenced by the conventional speed reducer, and the transmission form of the speed reducer under the manual control needs to be adjusted manually.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a curtain, which can effectively solve the above problems.

The embodiment of the utility model provides a curtain, include:

a curtain body;

the transmission device is connected with the curtain body and is used for driving the curtain body to move;

the speed reducer comprises a motor, a gear box and a PCB (printed circuit board), wherein the motor and the transmission device are in transmission connection with the gear box, and the PCB is electrically connected with the motor;

wherein the gearbox comprises a gear set comprising a sun gear, planet gears and a carrier, the sun gear and the planet gears are meshed and both mounted on the carrier, and the carrier and the planet gears are rotatable about a central axis of the sun gear; the planet gear is provided with an initial position and a working position, and the PCB can control the motor to drive the planet gear to switch between the initial position and the working position; when the planetary gear is located at an initial position, the planetary gear and the transmission device are arranged at intervals, and when the planetary gear is located at a working position, the planetary gear is in transmission connection with the transmission device.

In the utility model provides an in the (window) curtain, the gear box still includes:

the first transmission piece is in transmission connection with the motor;

the second transmission piece is in transmission connection with the transmission device;

the first transmission piece is in transmission connection with the second transmission piece through the gear set.

In the curtain provided by the embodiment of the utility model, the gear box also comprises a magnetic part, and the PCB comprises a magnetic induction part; the magnetic part is connected with the second transmission part so that the movement of the magnetic part is synchronous with the movement of the second transmission part; the magnetic induction piece is used for inducing the magnetic piece so as to obtain the information of the second transmission piece.

In the utility model provides an in the (window) curtain, the gear train still includes:

the first gear is in transmission connection with the first transmission piece;

the second gear is in transmission connection with the sun gear;

the third gear is fixedly connected with the second transmission piece;

the first gear is in transmission connection with the second gear, the planetary gear is meshed with the third gear when in a working position, a central shaft of the first gear and a central shaft of the second gear are both parallel to a central shaft of the sun gear, and the central shaft of the third gear is superposed with the central shaft of the second transmission piece.

In the curtain provided by the embodiment of the utility model, the gear box also comprises a shell, and the gear sets are all arranged in the shell;

the shell further comprises a mounting seat, the mounting seat comprises a first mounting portion, a second mounting portion, a third mounting portion and a fourth mounting seat, the first gear is mounted on the first mounting portion, the second gear is mounted on the second mounting portion, the third gear is mounted on the third mounting portion, and the support is mounted on the fourth mounting portion.

An embodiment of the utility model provides an in the (window) curtain, the support includes sun installation department and planet installation department, sun gear installs on the sun installation department, planet gear installs on the planet installation department, sun gear's center pin with the center pin of third installation department all with the center pin coincidence of sun installation department.

In the utility model provides an in the (window) curtain, transmission includes transmission case and drive belt, the drive belt is at least partly located in the transmission case, the drive belt with this body coupling of (window) curtain.

In the utility model provides an in the (window) curtain, the transmission case includes box and drive wheel, the drive wheel is located in the box, just the drive belt with the gear box all with the drive wheel transmission is connected.

The embodiment of the utility model provides an in the (window) curtain, the speed reducer still includes the connecting piece, the connecting piece part is located in the speed reducer, be equipped with on the box with the connecting portion of connecting piece looks adaptation, the connecting piece with connecting portion cooperation installation is so that the speed reducer with the transmission case is connected.

In the utility model provides an in the (window) curtain, the connecting piece includes:

the assembling part is provided with an assembling hole and is connected with the shell;

the centers of the two buckling parts are symmetrically distributed on two sides of the connecting part, the buckling parts are perpendicular to the assembling part, the free ends of the buckling parts extend in a direction parallel to the assembling part, and the buckling parts are buckled and connected with the connecting part;

and the adjusting part and the assembling part are positioned on the same plane and are used for driving the assembling part and the two buckling parts to rotate around the central shaft of the assembling hole.

The embodiment of the utility model provides a technical scheme can include following beneficial effect: the utility model provides a curtain, which comprises a curtain body, a transmission device and a speed reducer. The transmission device is connected with the curtain body and is used for driving the curtain body to move; the speed reducer comprises a motor, a gear box and a PCB board, wherein the motor is used as a power source to drive a transmission device, the motor and the transmission device are in transmission connection with the gear box, the gear box is used for adjusting the transmission relation between the motor and the transmission device, and the PCB board is used for controlling the rotation state of the motor. The gear box comprises a gear set, the gear set comprises a sun gear, a planet gear and a support, the sun gear is meshed with the planet gear and is mounted on the support, and the support and the planet gear can rotate around a central shaft of the sun gear; the planetary gear has initial position and operating position, and the PCB board can control the motor and drive the planetary gear and switch between initial position and operating position, and when the planetary gear was located initial position, the planetary gear set up with the transmission interval, and the planetary gear is located operating position, and the planetary gear is connected with the transmission.

When the motor drives the load, the planetary gear is in the working position, the function of speed reduction can be realized through the gear box, and the faster rotating speed of the motor is adjusted to be suitable for the rotating speed of the transmission device, so that the automatic control motor drives the curtain body to move more conveniently; when the manual control curtain body moves, the planetary gear is located at the initial position, the movement of the curtain body is not influenced by the gear box and the motor, the manual control flexibility can be embodied, and the use experience of a user is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

Fig. 1 is an exploded schematic view of a window curtain according to an embodiment of the present invention;

FIG. 2 is an exploded view of the reducer of FIG. 1;

FIG. 3 is an exploded view of the gearbox, motor and PCB of FIG. 2;

FIG. 4 is a schematic structural view of the gearbox of FIG. 2 with the planetary gears in an initial position;

FIG. 5 is a schematic view of an alternate angle of the gear box of FIG. 2 with the planetary gears in the operating position;

FIG. 6 is a schematic view of the first gear of FIG. 2;

FIG. 7 is a schematic view of the second gear of FIG. 2;

FIG. 8 is a schematic structural view of the set of planet teeth of FIG. 2;

FIG. 9 is a schematic view of the combination of the third gear and the second transmission member of FIG. 2;

FIG. 10 is a schematic view of the mount of FIG. 2;

FIG. 11 is a schematic structural view of the transmission case of FIG. 1;

FIG. 12 is a schematic view of the structure of the connector of FIG. 2;

fig. 13 is a schematic structural view of the connection of the connecting member, the transmission case and the reducer in fig. 1.

Description of reference numerals:

1000. (ii) a curtain;

10. a speed reducer;

100. a gear case;

110. a gear set; 111. a first gear; 1111. a first passive part; 1112. a first active part; 112. a second gear; 1121. a second passive part; 1122. a second active part; 113. a third gear; 114. a planetary gear set; 1141. a sun gear; 11411. a third passive part; 11412. a third active part; 1142. a planetary gear; 1143. a support; 11431. a sun mounting section; 11432. a planet mounting portion; 120. a housing; 121. a mounting seat; 1211. a first mounting portion; 1212. a second mounting portion; 1213. a third mounting portion; 1214. a fourth mounting portion; 122. an input aperture; 123. an output aperture; 130. a first transmission member; 140. a second transmission member; 150. a magnetic member;

200. a motor;

300. a housing; 310. a base; 320. a cover plate; 321. a through hole; 322. a clamping hole; 323. an adjustment hole; 324. a positioning column;

400. a PCB board; 410. a magnetic induction member;

500. a connecting member; 510. an assembling portion; 520. a fastening part; 530. an adjustment section;

20. a transmission device; 21. a transmission case; 211. a box body; 2111. a drive bore; 2112. a connecting portion; 2114. positioning holes; 212. a driving wheel; 22. a transmission belt;

30. a curtain body.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Referring to fig. 1 and 2, an embodiment of the present invention provides a curtain 1000, where the curtain 1000 includes a curtain body 30, a transmission device 20, and a speed reducer 10. The transmission device 20 is connected to the curtain body 30 and is used for driving the curtain body 30 to move. The reduction gear includes a motor 200, a gear box 100, and a PCB 400. The motor 200 is used as a power source to drive the transmission 20; the motor 200 and the transmission device 20 are in transmission connection with the gearbox 100, and the gearbox 100 is used for adjusting the transmission relation between the motor 200 and the transmission device 20; the PCB 400 is electrically connected to the motor 200 for controlling a rotation state of the motor 200.

Wherein gearbox 100 includes gear set 110, gear set 110 includes planetary gear set 114, planetary gear set 114 includes sun gear 1141, planet gears 1142 and carrier 1143, sun gear 1141 is engaged with planet gears 1142 and both are mounted on carrier 1143, carrier 1143 and planet gears 1142 can rotate around the central axis of sun gear 1141; planetary gear 1142 has initial position and operating position, and PCB board 400 can control motor 200 and drive planetary gear 1142 and switch between initial position and operating position, and when planetary gear 1142 was located initial position, planetary gear 1142 set up with transmission 20 interval, and planetary gear 1142 was located operating position, and planetary gear 1142 is connected with transmission 20 transmission.

After the technical scheme is adopted, the rotation state of the motor 200 is controlled by the PCB 400, and the switching of the planetary gear 1142 between the initial position and the working position is realized, so that when the motor 200 drives the transmission device 20, the planetary gear 1142 is in the working position, the function of speed reduction can be realized through the gear box 100, the faster rotating speed of the motor 200 is adjusted to be suitable for the rotating speed of the transmission device 20, and the automatic control of the motor 200 to drive the transmission device 20 to move is more convenient; meanwhile, when the curtain body 30 is manually controlled to move, the planetary gear 1142 is in the initial position, and the movement of the curtain body 30 is not influenced by the gear box 100 and the motor 200, so that the flexibility of manual control can be better embodied, and the use experience of a user is improved.

Referring to fig. 2 to 5, in some embodiments, the gearbox 100 further includes a first transmission member 130 and a second transmission member 140, the first transmission member 130 is connected to the motor 200 in a transmission manner, and the second transmission member 140 is connected to the transmission device 20 in a transmission manner. The first transmission member 130 is in transmission connection with the second transmission member 140 through the gear set 110.

It is understood that the speed reducer 10 further includes a housing 300, and the motor 200, the PCB 400 and the gearbox 100 are all mounted in the housing 300. The housing 300 includes a base 310 and a cover 320, the cover 320 is provided with a through hole 321, and the second transmission member 140 passes through the through hole 321 to be in transmission connection with the transmission device 20.

It can be understood that, referring to fig. 2 and 3, in some embodiments, the gearbox 100 further includes a housing 120, the housing 120 is provided with an input hole 122 and an output hole 123, the first transmission member 130 is disposed in the input hole 122, the second transmission member 140 is disposed in the output hole 123, a central axis of the first transmission member 130 coincides with a central axis of the input hole 122, and a central axis of the second transmission member 140 coincides with a central axis of the output hole 123.

Referring to fig. 2 and 3, in some embodiments, the gearbox 100 further includes a magnetic member 150, and the PCB 400 includes a magnetic induction member 410. The magnetic member 150 is connected to the second transmission member 140 such that the movement of the magnetic member 150 is synchronized with the movement of the second transmission member 140. The magnetic induction element 410 is used for inducing the magnetic element 150 to obtain the information of the second transmission element 140.

It is understood that the PCB 400 may control the position reached by the curtain body 30 by controlling the motor 200 to preset motion parameters, such as a rotation speed, a rotation number or a rotation position. When the curtain body 30 reaches the preset position, the PCB 400 may obtain the motion parameter of the second transmission member 140 during the motion process by sensing the magnetic member 150, and after it is determined that the curtain body 30 reaches the preset position, the PCB 400 controls the motor 200 to rotate the planetary gear 1142 in the gear box 100 to the initial position, so as to prevent the gear box 100 and the motor 200 from restricting the motion of the curtain body 30 in the subsequent operation.

Referring to fig. 1 to 4, in some embodiments, the gear set 110 further includes a first gear 111, a second gear 112 and a third gear 113, the first gear 111 is in transmission connection with the first transmission member 130, the second gear 112 is in transmission connection with the sun gear 1141, and the third gear 113 is fixedly connected with the second transmission member 140.

Specifically, the first gear 111 is in transmission connection with the second gear 112, the planetary gear 1142 is meshed with the third gear 113 in the working position, the central axis of the first gear 111 and the central axis of the second gear 112 are both parallel to the central axis of the sun gear 1141, and the central axis of the third gear 113 coincides with the central axis of the second transmission member 140.

Referring to fig. 2 to 5, in some embodiments, the gear set 110 further includes a first gear 111 in transmission connection with the first transmission member 130 and a second gear 112 in transmission connection with the sun gear 1141. The first gear 111 is in transmission connection with the second gear 112, and a central axis of the first gear 111 and a central axis of the second gear 112 are both parallel to a central axis of the sun gear 1141.

Referring to fig. 6, in some embodiments, the first gear 111 includes a first driving portion 1112 and a first driven portion 1111, the first driving portion 1112 is engaged with the second gear 112, and the first driven portion 1111 is engaged with the first transmission member 130.

In a specific embodiment, the first transmission member 130 is a worm, and the motor 200 rotates around a first direction and drives the first gear 111 to rotate around a second direction, and a central axis of the first gear 111 is perpendicular to a central axis of the motor 200. It can be understood that, when the first transmission member 130 is a worm, the first passive portion 1111 engaged with the first transmission member 130 is shaped as a spiral so that the rotation of the first transmission member 130 about the first direction is converted into the rotation of the first gear 111 about the second direction. The first direction is an x-axis direction shown in fig. 1 and 2, the second direction is a y-axis direction shown in fig. 1 and 2, the x-axis direction is parallel to a central axis of the first transmission member 130, and the y-axis direction is parallel to a central axis of the first gear 111.

Specifically, the diameter of the first driving part 1112 is smaller than the diameter of the first driven part 1111, and the number of the gear teeth on the first driving part 130 is smaller than the number of the gear teeth on the first driven part 1111, so that the rotating speed of the first gear 111 is smaller than the rotating speed of the first driving part 130, and the first step of speed reduction effect of the gearbox 100 is achieved.

In an alternative embodiment, the first active portion 1112 and the first passive portion 1111 may be integrally formed, or the first active portion 1112 and the first passive portion 1111 may be separately formed. When the first active portion 1112 and the first passive portion 1111 are formed separately, the connection mode between the first active portion 1112 and the first passive portion 1111 may be welding, riveting, screwing, glue connection or snap connection, etc., which is not limited in the present invention.

It can be understood that, when the first driving portion 1112 and the first driven portion 1111 are integrally formed, the manufacturing process of the first gear 111 is more convenient, the process flow is less, and the large-scale commercial manufacturing is more convenient; when the first driving part 1112 and the first driven part 1111 are formed separately, when any one of the first driving part 1112 and the first driven part 1111 is damaged and needs to be replaced, only the damaged part needs to be replaced, and the cost is further saved.

Referring to fig. 7, in some embodiments, the second gear 112 includes a second driving portion 1122 and a second driven portion 1121, the second driving portion 1122 is engaged with the sun gear 1141, and the second driven portion 1121 is engaged with the first driving portion 1112.

In a specific embodiment, the central axis of the first gear 111 is parallel to the central axis of the second gear 112, and the first gear 111 rotates in the same direction as the second gear 112 and rotates around the second direction.

Specifically, the diameter of the second driving portion 1122 is smaller than the diameter of the second driven portion 1121, and the number of gear teeth on the first driving portion 1112 is smaller than the number of gear teeth on the second driven portion 1121, so that the rotation speed of the second gear 112 is smaller than the rotation speed of the first gear 111, and the second-step speed reduction effect of the gearbox 100 is achieved.

In an alternative embodiment, the second active portion 1122 and the second passive portion 1121 may be integrally formed, or the second active portion 1122 and the second passive portion 1121 may be separately formed. When the second active portion 1122 and the second passive portion 1121 are formed separately, the connection manner between the second active portion 1122 and the second passive portion 1121 may be welding, riveting, screwing, glue connection or snap connection, which is not limited in the present invention.

It can be understood that, when the second active portion 1122 and the second passive portion 1121 are integrally formed, the manufacturing process of the second gear 112 is more convenient, the process flow is less, and the large-scale commercial manufacturing is more convenient; when the second active portion 1122 and the second passive portion 1121 are formed separately, if any one of the second active portion 1122 and the second passive portion 1121 is damaged and needs to be replaced, only the damaged part needs to be replaced, which further saves the cost.

Referring to fig. 8, in some embodiments, the sun gear 1141 includes a third driving portion 11412 and a third driven portion 11411, the third driving portion 11412 is engaged with the planetary gear 1142, and the third driven portion 11411 is engaged with the second driving portion 1122.

In a specific embodiment, the central axis of the second gear 112 is parallel to the central axis of the sun gear 1141, and the second gear 112 rotates in the same direction as the sun gear 1141, and both rotate in the second direction.

Specifically, the diameter of the third driving part 11412 is smaller than the diameter of the third driven part 11411, and the number of the gear teeth on the second driving part 1122 is smaller than the number of the gear teeth on the third driven part 11411, so that the rotation speed of the sun gear 1141 is smaller than the rotation speed of the second gear 112, and the speed reduction effect of the third step of the gear box 100 is achieved.

In an alternative embodiment, the third active portion 11412 and the third passive portion 11411 may be integrally formed, and the third active portion 11412 and the third passive portion 11411 may be separately formed. When third initiative portion 11412 and third passive portion 11411 components of a whole that can function independently shaping, the connected mode of third initiative portion 11412 and third passive portion 11411 can be for welding, riveting, screw connection, glue connection or buckle connection etc. the utility model discloses in do not do the restriction.

It can be understood that, when the third driving portion 11412 and the third driven portion 11411 are integrally formed, the manufacturing process of the sun gear 1141 is more convenient, the process flow of steps is less, and the large-scale commercial manufacturing is more convenient; when the third driving portion 11412 and the third driven portion 11411 are formed separately, when any one of the third driving portion 11412 and the third driven portion 11411 is damaged and needs to be replaced, only the damaged part needs to be replaced, which saves cost.

Referring to fig. 9, in some embodiments, in an alternative embodiment, the third gear 113 and the second transmission member 140 may be integrally formed, and the third gear 113 and the second transmission member 140 may also be separately formed. When third gear 113 and second driving medium 140 components of a whole that can function independently shaping, the connected mode of third gear 113 and second driving medium 140 can be for welding, riveting, screw connection, glue connection or buckle connection etc. do not do the restriction in the utility model discloses.

It can be understood that, when the third gear 113 and the second transmission member 140 are integrally formed, the manufacturing process of the third gear 113 and the second transmission member 140 is more convenient, the process flow of steps is less, and the large-scale commercial manufacturing is more convenient; when the third gear 113 and the second transmission member 140 are formed separately, when any one of the third gear 113 and the second transmission member 140 is damaged and needs to be replaced, only the damaged part needs to be replaced, and the cost is further saved.

Referring to fig. 10, in some embodiments, the housing 120 includes a mounting base 121, the mounting base 121 includes a first mounting portion 1211, a second mounting portion 1212, a third mounting portion 1213, and a fourth mounting portion 1214, the first gear 111 is mounted on the first mounting portion 1211, the second gear 112 is mounted on the second mounting portion 1212, the third gear 113 is mounted on the third mounting portion 1213, and the bracket 1143 is mounted on the fourth mounting portion 1214.

Specifically, the bracket 1143 is rotatable about the central axis of the fourth mounting portion 1214, and the first mounting portion 1211 and the second mounting portion 1212 are both located outside the rotational range of the bracket 1143, preventing the rotation of the bracket 1143 from being restricted by the first mounting portion 1211 and the second mounting portion 1212.

Referring to fig. 8, in some embodiments, carrier 1143 includes a sun mount 11431 and a planet mount 11432, sun gear 1141 is mounted on sun mount 11431, planet gear 1142 is mounted on planet mount 11432, and the central axis of sun gear 1141 and the central axis of fourth mount 1214 are coincident with the central axis of sun mount 11431.

Specifically, when the central axis of the sun gear 1141 and the central axis of the fourth mounting portion 1214 are coincident with the central axis of the sun mounting portion 11431, the sun gear 1141 rotates around the central axis of the sun gear 1141, so as to drive the bracket 1143 to rotate around the central axis of the fourth mounting portion 1214, so that the motor 200 can adjust the planet gear 1142 to switch between the initial position and the working position through the sun gear 1141.

It can be understood that the diameter of the planetary gear 1142 may be larger than the diameter of the third driving portion 11412, may be equal to the diameter of the third driving portion 11412, or may be smaller than the diameter of the third driving portion 11412, which is not limited in the present invention. In a specific embodiment, the diameter of the planetary gear 1142 is equal to the diameter of the third driving part 11412, and the number of the gear teeth on the third driving part 11412 is equal to the number of the gear teeth on the planetary gear 1142, so that the rotation speeds of the sun gear 1141 and the planetary gear 1142 are synchronized, when the planetary gear 1142 revolves around the central axis of the sun gear 1141, the relative positions of the planetary gear 1142 and the sun gear 1141 are kept unchanged, and the stability between the planetary gear 1142 and the sun gear 1141 is improved.

Specifically, the diameter of the planetary gear 1142 is smaller than the diameter of the third gear 113, and the number of gear teeth on the planetary gear 1142 is smaller than the number of gear teeth on the third gear 113, so that the rotating speed of the third gear 113 is smaller than the rotating speed of the planetary gear 1142, and the speed reduction effect of the fourth step of the gearbox 100 is realized.

Referring to fig. 1, in some embodiments, the driving device 20 includes a driving box 21 and a belt 22, the belt 22 is at least partially disposed in the driving box 21, and the belt 22 is connected to the curtain body 30.

Specifically, referring to fig. 11, the transmission case 21 includes a case 211 and a transmission wheel 212, the transmission wheel 212 is located in the case 211, and the transmission belt 22 and the gear case 100 are both in transmission connection with the transmission wheel 212. In an alternative embodiment, the transmission wheel 212 is a transmission gear, the transmission belt 22 includes a flexible rack adapted to the transmission wheel 212, and the transmission device 20 drives the curtain body 30 to move more accurately through the cooperation of the transmission gear and the flexible rack, and the magnetic induction element 410 on the PCB 400 senses the position information of the curtain body 30 more accurately, so as to control the movement of the curtain body 30 more conveniently.

In an alternative embodiment, a guiding portion is provided inside the box 211, and the shape and size of the guiding portion are matched with those of the driving belt 22, so that the driving belt 22 is prevented from being separated from the preset track during the movement, and the assembly of the driving belt 22 and the transmission case 21 is more convenient. It is understood that the box 211 is further provided with a driving hole 2111, the driving hole 2111 is matched with the second driving member 140, and the second driving member 140 passes through the output hole 123 of the housing 120, the through hole 321 of the housing 300 and the driving hole 2111 of the box 211 to be connected with the driving wheel 212.

Referring to fig. 1, 2, 12 and 13, in some embodiments, the speed reducer 10 further includes a connecting member 500, the connecting member 500 is partially located in the speed reducer 10, the box body 211 is provided with a connecting portion 2112 adapted to the connecting member 500, and the connecting member 500 and the connecting portion 2112 are installed in a matching manner so that the speed reducer 10 is connected to the transmission case 21.

Referring to fig. 2 and 12, in an alternative embodiment, the connecting member 500 includes a mounting portion 510, an adjusting portion 530 and two locking portions 520. The fitting portion 510 is provided with a fitting hole, and the connecting portion 2112 is connected to the housing 120. The two buckling parts 520 are symmetrically distributed at the two sides of the assembling part 510, the buckling parts 520 are perpendicular to the assembling part 510, the free ends of the buckling parts 520 extend in the direction parallel to the assembling part 510, and the buckling parts 520 are connected with the box body 211. The adjusting portion 530 is located on the same plane as the assembling portion 510, and is used for driving the assembling portion 510 and the two fastening portions 520 to rotate around the central axis of the assembling hole. It can be understood that, after the connecting member 500 is assembled with the speed reducer 10, the central axis of the fitting hole coincides with the central axis of the second transmission member 140.

Specifically, the cover plate 320 is provided with a clamping hole 322 and an adjusting hole 323, the connecting portion 2112 is matched with the clamping hole 322, in the process of assembling the speed reducer 10 and the transmission case 21, the assembling portion 510 is matched with the third mounting seat 121 and the second transmission part 140, meanwhile, the clamping portion 520 penetrates through the clamping hole 322 and the connecting portion 2112, the adjusting portion 530 penetrates through the adjusting hole 323, the free end of the clamping portion 520 is located inside the transmission case 21 at the moment, and the clamping portion 520 is clamped with the connecting portion 2112 after rotating to a preset position around the central axis of the assembling hole by operating the adjusting portion 530 outside the adjusting hole 323.

Specifically, the cover plate 320 is further provided with a positioning column 324, the box body 211 is further provided with a positioning hole 2114 which is matched with the positioning column 324 in the direction, and in the process of assembling the speed reducer 10 and the transmission case 21, the positioning column 324 is matched with the positioning hole 2114, so that the speed reducer 10 and the transmission case 21 are assembled more conveniently. It can be understood that the positioning column 324 can also be disposed on the box 211, and the positioning hole 2114 can be disposed on the cover plate 320, as long as the positioning function can be played in the assembling process of the speed reducer 10 and the transmission case 21, the present invention is not limited thereto.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The above disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of the specific examples are described above. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

In the description of the present specification, reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A window covering, comprising:

a curtain body;

the transmission device is connected with the curtain body and is used for driving the curtain body to move;

the speed reducer comprises a motor, a gear box and a PCB (printed circuit board), wherein the motor and the transmission device are in transmission connection with the gear box, and the PCB is electrically connected with the motor;

wherein the gearbox comprises a gear set comprising a sun gear, planet gears and a carrier, the sun gear and the planet gears are meshed and both mounted on the carrier, and the carrier and the planet gears are rotatable about a central axis of the sun gear; the planet gear is provided with an initial position and a working position, and the PCB can control the motor to drive the planet gear to switch between the initial position and the working position; when the planetary gear is located at an initial position, the planetary gear and the transmission device are arranged at intervals, and when the planetary gear is located at a working position, the planetary gear is in transmission connection with the transmission device.

2. The window covering of claim 1, wherein the gear box further comprises:

the first transmission piece is in transmission connection with the motor;

the second transmission piece is in transmission connection with the transmission device;

the first transmission piece is in transmission connection with the second transmission piece through the gear set.

3. The window covering of claim 2, wherein the gear box further comprises magnetic elements, the PCB board comprises magnetic induction elements; the magnetic part is connected with the second transmission part so that the movement of the magnetic part is synchronous with the movement of the second transmission part; the magnetic induction piece is used for inducing the magnetic piece so as to obtain the information of the second transmission piece.

4. The window covering of claim 2, wherein the gear set further comprises:

the first gear is in transmission connection with the first transmission piece;

the second gear is in transmission connection with the sun gear;

the third gear is fixedly connected with the second transmission piece;

the first gear is in transmission connection with the second gear, the planetary gear is meshed with the third gear when in a working position, a central shaft of the first gear and a central shaft of the second gear are both parallel to a central shaft of the sun gear, and the central shaft of the third gear is superposed with the central shaft of the second transmission piece.

5. The window covering of claim 4, wherein the gearbox further comprises a housing, the gear sets each being mounted within the housing;

the shell further comprises a mounting seat, the mounting seat comprises a first mounting portion, a second mounting portion, a third mounting portion and a fourth mounting seat, the first gear is mounted on the first mounting portion, the second gear is mounted on the second mounting portion, the third gear is mounted on the third mounting portion, and the support is mounted on the fourth mounting portion.

6. The window covering of claim 5, wherein the bracket includes a sun mount and a planet mount, the sun gear being mounted on the sun mount, the planet gear being mounted on the planet mount, a central axis of the sun gear and a central axis of the third mount both coinciding with a central axis of the sun mount.

7. The window covering of claim 5, wherein the drive device includes a drive housing and a drive belt, the drive belt being at least partially disposed within the drive housing, the drive belt being coupled to the window covering body.

8. The window curtain of claim 7, wherein the transmission box comprises a box body and a transmission wheel, the transmission wheel is positioned in the box body, and the transmission belt and the gear box are in transmission connection with the transmission wheel.

9. The window curtain as claimed in claim 8, wherein the speed reducer further comprises a connecting member, the connecting member is partially located in the speed reducer, a connecting portion adapted to the connecting member is provided on the box body, and the connecting member is installed in cooperation with the connecting portion so that the speed reducer is connected to the transmission case.

10. The window covering of claim 9, wherein the connector comprises:

the assembling part is provided with an assembling hole and is connected with the shell;

the centers of the two buckling parts are symmetrically distributed on two sides of the connecting part, the buckling parts are perpendicular to the assembling part, the free ends of the buckling parts extend in a direction parallel to the assembling part, and the buckling parts are buckled and connected with the connecting part;

and the adjusting part and the assembling part are positioned on the same plane and are used for driving the assembling part and the two buckling parts to rotate around the central shaft of the assembling hole.

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