CN216130844U - Brake equipment and electric window curtain - Google Patents

Abstract

The application discloses a brake device and an electric curtain, which comprise a brake ring, a brake spring and a transmission shaft, wherein the brake spring is arranged in the brake ring; the transmission shaft comprises a driving shaft and a driven shaft, the driving shaft drives the driven shaft to rotate, the brake spring is sleeved on the transmission shaft, a first stop block is arranged on the driving shaft, and a second stop block is arranged on the driven shaft; the first stop block and the second stop block are positioned in the brake spring; when the driving shaft rotates, the first stop block is driven to rotate, so that the brake spring is driven to contract inwards to be separated from the brake ring; the driven shaft drives the second stop block to rotate when rotating, the outer surface of the brake spring is abutted to the inner wall of the brake ring, so that the brake spring is driven to expand outwards to be tightly matched with the brake ring, the original brake force of the motor is combined to achieve the effect of braking, the brake force of the curtain is increased, the situation that the position of the curtain cloth cannot be locked when the weight of the curtain cloth is too large is avoided, and the position of the curtain cloth is still lowered after the motor brakes.

Description

Brake equipment and electric window curtain

Technical Field

The application relates to the field of curtain control, in particular to a brake device and an electric curtain.

Background

The rolling curtain rolls the curtain cloth into a roller shape, and the curtain cloth is lifted or lowered through the pull rope or the zipper, so as to achieve the effects of isolating sunlight and isolating external sight.

The electric roller shutter is generally driven by a motor, and the motor is controlled to control the electric roller shutter to enable the curtain cloth to ascend or descend to reach a designated position so as to achieve the effects of isolating sunlight and isolating external sight.

SUMMERY OF THE UTILITY MODEL

The utility model provides a brake equipment and electric window curtain, through being equipped with brake ring and brake spring, brake spring and brake ring produce the brake power of friction in order to increase the motor, reunion motor original brake power to reach braking effect, when avoiding curtain cloth weight too big, unable locking curtain cloth and lead to the curtain cloth to descend, influence the result of use of electric roller shutter.

The application discloses a brake device, which comprises a brake ring, a brake spring and a transmission shaft; the brake spring is arranged in the brake ring; the transmission shaft comprises a driving shaft and a driven shaft, the driving shaft drives the driven shaft to rotate, the brake spring is sleeved on the transmission shaft, a first stop block is arranged on the driving shaft, and a second stop block is arranged on the driven shaft; the first stop block and the second stop block are positioned in the brake spring; when the driving shaft rotates, the first stop block is driven to rotate, so that the brake spring is driven to contract inwards to be separated from the brake ring; the driven shaft drives the second stop block to rotate when rotating, and the outer surface of the brake spring is abutted to the inner wall of the brake ring, so that the brake spring is driven to expand and is tightly matched with the brake ring.

Optionally, the brake ring is provided with two, the brake spring is provided with two, the transmission shaft is provided with two, two the transmission shaft is parallel and the slant sets up side by side, two the brake spring overlaps respectively to be established two on the transmission shaft and lie in two the brake ring is intra-annular.

Optionally, the brake device further comprises a first cover body and a second cover body, the first cover body is covered with the second cover body, a first through hole is formed in the first cover body, a second through hole is formed in the second cover body, the first through hole is provided with two, the second through hole is provided with two, the first through hole and the second through hole are correspondingly arranged, the transmission shaft penetrates through the first through hole and the second through hole respectively, and the distances from the transmission shaft to the same side of the first cover body are different.

Optionally, the brake device further comprises two bearing blocks, the two bearing blocks are respectively located on the driving shaft and the driven shaft, and the brake spring is located between the two bearing blocks.

Optionally, a first spacing space and a second spacing space are provided between the first stopper and the second stopper, and the first spacing space is formed by one end of the first stopper and the other end of the second stopper; the second spacing space is formed by the other end of the first stop block and one end of the second stop block, and the first stop block, the first spacing space, the second stop block and the second spacing space are connected end to end; one end of the brake spring is located in the first spacing space, and the other end of the brake spring is located in the second spacing space.

Optionally, the first stopper and the second stopper are arc-shaped protrusions, the arc length of the first stopper is greater than that of the second stopper, and the circle center and the radius of a circle taking the first stopper as an arc are the same as those of a circle taking the second stopper as an arc; the arc length of the outer ring of the first stop block is half of that of the second stop block.

Optionally, a connecting hole is formed in the driven shaft, an exhaust hole is formed in the side wall of the driven shaft, the exhaust hole is communicated with the connecting hole, and the brake spring is made of a metal material.

Optionally, the brake device further comprises a first cover body and a second cover body, the first cover body is covered by the second cover body, a first through hole is formed in the first cover body, a second through hole is formed in the second cover body, when the first cover body is covered by the second cover body, the first through hole is communicated with the second through hole, the driving shaft is matched with the first cover body, the bearing block on the driving shaft is abutted against the bottom of the hole of the first through hole so that the driving shaft is connected with the first cover body, the driven shaft is matched with the second cover body, and the bearing block on the driven shaft is abutted against the bottom of the hole of the second through hole so that the driven shaft is connected with the second cover body.

The application also discloses an electric curtain, which comprises the brake device, a transmission rod, a curtain cloth and a motor, wherein the transmission rod is connected with a driven shaft of the brake device; the curtain cloth is arranged on the transmission rod, and the transmission rod rotates to drive the curtain cloth to ascend or descend; and the output shaft of the motor is connected with the driving shaft of the brake device, and the motor is used for controlling the driving shaft of the brake device to rotate.

Optionally, the electric curtain further comprises a rope winder, a first rail, a second rail, a first winding and unwinding rope and a second winding and unwinding rope, wherein the rope winder is arranged on the transmission rod; the first track is arranged below the transmission rod; the second track is arranged below the first track; the first retractable rope is respectively connected with the rope winder and the first track; the second retractable rope is respectively connected with the rope winder and the second track; the curtain cloth comprises a day curtain and a night curtain, the day curtain is arranged between the transmission rod and the first rail, one end of the day curtain is connected with the transmission rod, the other end of the day curtain is connected with the first rail, the night curtain is arranged between the first rail and the second rail, one end of the night curtain is connected with the first rail, and the other end of the night curtain is connected with the second rail; the first cover body is provided with two first through holes, the second cover body is provided with two second through holes, the two first through holes and the two second through holes are correspondingly arranged, and the first through holes are communicated with the second through holes; the motor is a double-output motor, the double-output motor is provided with two output shafts which are obliquely arranged and correspond to the two first through holes; the two transmission rods are obliquely arranged corresponding to the two output shafts of the motor; the brake device is provided with two sets, the two sets of brake devices are respectively arranged at the two first through holes, two output shafts of the double-output motor are respectively connected with the two driving shafts, and the two driven shafts are respectively connected with the two transmission rods.

This application is through using brake equipment, brake equipment is provided with driving shaft and driven shaft, can drive the driven shaft when the driving shaft rotates and rotate, use with the motor cooperation, brake spring can expand when the driven shaft rotates, and produce the friction between the brake ring, thereby produce the braking power, the original braking power of reunion motor is in order to reach the effect of brake, the braking power of (window) curtain has been increased, avoid the position of the too big unable locking curtain cloth when the weight of curtain cloth, the curtain cloth position still descends after leading to the brake.

Drawings

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

fig. 1 is a schematic view of the overall structure of a brake device according to an embodiment of the present application;

fig. 2 is an exploded view of the overall structure of a brake apparatus according to an embodiment of the present application;

FIG. 3 is a schematic view of the structure of the transmission shaft and the brake spring in an embodiment of the present application;

FIG. 4 is a schematic structural view of a drive shaft according to an embodiment of the present application;

FIG. 5 is a front view of a drive shaft in an embodiment of the present application;

FIG. 6 is a sectional view taken at A-A in FIG. 5;

FIG. 7 is a schematic structural diagram of a first cover according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of a second cover according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram of a first cover, a brake spring and a driving shaft according to an embodiment of the present application;

FIG. 10 is a schematic structural view of a second cover, a brake spring and a follower shaft in an embodiment of the present application;

fig. 11 is an overall structural view of a motorized window treatment according to another embodiment of the present application;

fig. 12 is an exploded view of the overall structure of a motorized window treatment according to another embodiment of the present application.

100, a brake device; 120. a brake spring; 130. a drive shaft; 131. a drive shaft; 131a, a first stopper; 132. a driven shaft; 132a, a second stop; 132b, a connection hole; 132c, an exhaust hole; 133. a first compartment; 134. a second spaced-apart space; 140. a bearing block; 150. a first cover body; 151. a first through hole; 160. a second cover body; 161. a second through hole; 200. a transmission rod; 300. a cord fabric; 400. a motor; 500. a rope winder.

Detailed Description

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

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

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

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

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

Fig. 1 is a schematic view of an overall structure of a brake apparatus of the present application, fig. 2 is an exploded view of an overall structure of a brake apparatus of the present application, and fig. 3 is a schematic view of a structure of a transmission shaft 130 and a brake spring 120 of the present application, as shown in fig. 1, fig. 2 and fig. 3, which disclose a brake apparatus as a first embodiment of the present application, the brake apparatus including a brake ring, a brake spring 120 and a transmission shaft 130, the brake spring 120 being disposed in the brake ring, an outer circumferential surface of the brake spring 120 abutting against an inner wall of the brake ring; the transmission shaft 130 comprises a driving shaft 131 and a driven shaft 132, the driving shaft 131 drives the driven shaft 132 to rotate, the brake spring 120 is sleeved on the transmission shaft 130, a first stop block 131a is arranged on the driving shaft 131, a second stop block 132a is arranged on the driven shaft 132, and the driving shaft 131 drives the first stop block 131a to rotate when rotating, so that the brake spring 120 is driven to contract inwards to be separated from a brake ring; when the driven shaft 132 rotates, the driven shaft 132 drives the second stopper 132a to rotate, so as to drive the brake spring 120 to expand outward and tightly fit with a brake ring, wherein, as shown in fig. 3, the brake spring 120 is a right-handed spring, the driving shaft 131 is arranged at the right end of the brake spring 120, and the driven shaft 132 is arranged at the left end of the brake spring 120; on the contrary, if the brake spring 120 is a left-handed spring, the driving shaft 131 is disposed at the left end of the brake spring 120, and the driven shaft 132 is disposed at the right end of the brake spring 120, wherein the brake spring 120 is a cylindrical compression spring, and the circular contact surface is small compared with other springs when the cylindrical compression spring is used, but the friction force for braking can also be generated, in the present application, the brake spring 120 is not limited to be the cylindrical compression spring, and the brake spring 120 is not limited to be the left-handed spring or the right-handed spring, and only the brake spring 120 is described as a right-handed spring, and the brake spring 120 can be used according to actual requirements when in specific use;

when the brake device is used, one end of the driving shaft 131 rotates to drive the first stop block 131a to rotate, the first stop block 131a drives the spring end of the brake spring 120 to rotate, so that the diameter of the outer circumferential surface of the brake spring 120 is reduced, the outer circumferential surface of the brake spring 120 is separated from the inner wall of the brake ring, and no friction force is generated between the brake spring 120 and the brake ring, so that the driving shaft 131 can drive the driven shaft 132 to rotate, and the brake device cannot be driven under the influence of the friction force; on the contrary, one end of the driven shaft 132 rotates to drive the second stopper 132a to rotate, the second stopper 132a drives the spring end of the brake spring 120 to rotate, so as to drive the diameter of the outer circumferential surface of the brake spring 120 to expand, so that the outer circumferential surface of the brake spring 120 is tightly matched with the inner wall of the brake ring, and friction force is generated between the brake spring 120 and the brake ring to stop the driven shaft 132 from rotating, so that the driving shaft 131 cannot be driven to rotate;

this application is through using brake equipment, brake equipment is provided with driving shaft 131 and driven shaft 132, can drive driven shaft 132 when driving shaft 131 rotates and rotate, uses with the cooperation of motor 400, and then can produce frictional force when driven shaft 132 rotates, the effect of the original brake power of motor 400 in order to reach the brake is recombined, avoid when the weight of curtain cloth 300 is too big can't lock curtain cloth 300's position, lead to behind the motor 400 brake curtain cloth 300 position still decline, can't fix.

Fig. 5 is a front view of a transmission shaft 130 in the present application, fig. 6 is a cut-away view of a position a-a in fig. 5, as shown in fig. 5 and 6, a first spacing space 133 and a second spacing space 134 are provided between the first stopper 131a and the second stopper 132a, one end of the braking spring 120 is located in the first spacing space 133, and the other end of the braking spring 120 is located in the second spacing space 134, wherein the braking spring 120 is a cylindrical compression spring, two ends of the braking spring 120 are respectively bent toward an axial direction of the spring and the bent portions do not exceed two ends of the braking spring 120, the bent portions of two ends of the braking spring 120 are respectively located in the first spacing space 133 and the second spacing space 134, the first stopper 131a and the second stopper 132a are arc-shaped protrusions, an arc length of the first stopper 131a is greater than an arc length of the second stopper 132a, the first spacing space 133 and the second spacing space 134 are fan-shaped, and the size of the first stopper 131a and the second stopper 132a changes with the rotation of the driving shaft 131 and the driven shaft 132, and the first stopper 131a and the second stopper 132a may also be rectangular.

When the driving shaft 131 rotates, the first stopper 131a is driven to rotate towards the position of the second stopper 132a, the first spacing space 133 is reduced, the first stopper 131a continuously rotates, so that one end of the brake spring 120 located in the first spacing space 133 is respectively contacted with the first stopper 131a and the second stopper 132a, the brake spring 120 is in a retraction state, the outer circumferential surface of the brake spring 120 is separated from the inner wall of the brake ring, and the first stopper 131a drives the second stopper 132a to move, so that the driving shaft 131 drives the driven shaft 132 to move; on the contrary, when the driven shaft 132 rotates, the second stopper 132a is driven to rotate towards the first stopper 131a, the second spacing space 134 becomes smaller, the second stopper 132a continuously rotates, so that one end of the brake spring 120 located in the second spacing space 134 is respectively contacted with the first stopper 131a and the second stopper 132a, the brake spring 120 is in an outward expansion state, the outer circumferential surface of the brake spring 120 is tightly attached to the inner wall of the brake ring to generate a friction force, and a braking force is generated to brake the driven shaft 132 to stop rotating, thereby achieving the braking effect.

In this embodiment, the outer ring arc length of the first block 131a is half of the outer ring arc length of the second block 132a, so that the first spacing space 133 and the second spacing space 134 are not equal in size, and when the brake device is used, a dummy position is disposed between the first block 131a and the second block 132a, but the outer ring arc length of the first block 131a is not limited to be half of the outer ring arc length of the second block 132 a.

Fig. 4 is a schematic structural diagram of a transmission shaft 130 in the present application, as shown in fig. 4, as an improvement of the first embodiment of the present application, the braking device further includes two receiving blocks 140, the receiving blocks 140 are provided with two, one receiving block 140 is located on the driving shaft 131, the other receiving block 140 is located on the driven shaft 132, the braking spring 120 is located between the two receiving blocks 140, the two receiving blocks 140 are used for limiting the position of the braking spring 120, so that the braking spring is always located between the two receiving blocks 140 of the transmission shaft 130, and cannot be separated from the transmission shaft 130 due to other reasons such as movement, wherein the receiving block 140 may be a circular receiving block 140, the diameter of the receiving block 140 is greater than that of the braking ring, and the braking ring is also located between the two receiving blocks 140.

In this embodiment, the brake ring is made for the metal material, the extension the life of brake ring, and be the metal material, work as the brake ring with brake spring 120 can produce the heat when producing friction, and the brake ring of metal material can be convenient for dissipate the heat, the extension brake spring 120's life.

Fig. 7 is a schematic structural diagram of a first cover 150 in the present application, fig. 8 is a schematic structural diagram of a second cover 160 in the present application, as shown in fig. 7 and fig. 8, as an improvement of the first embodiment of the present application, the brake apparatus further includes the first cover 150 and the second cover 160, the first cover 150 and the second cover 160 are covered, the first cover 150 is provided with a first through hole 151, the second cover 160 is provided with a second through hole 161, when the first cover 150 and the second cover 160 are covered, the first through hole 151 is communicated with the second through hole 161, the driving shaft 131 is matched with the first cover 150, and a receiving block 140 on the driving shaft 131 is abutted against a hole bottom of the first through hole 151 to connect the driving shaft 131 with the first cover 150, the driven shaft 132 is matched with the second cover 160, and the receiving block 140 on the driven shaft 132 is abutted against a hole bottom of the second through hole 161 to connect the driven shaft 132 with the second cover 160 A connection, wherein the diameter of the receiving block 140 is larger than the diameters of the first through hole 151 and the second through hole 161, the driving shaft 131 extends out of the first cover 150 through the first through hole 151, and the driven shaft 132 extends out of the second cover 160 through the second through hole 161;

the driving shaft 131 is connected to the first cover body 150, the driven shaft 132 is connected to the second cover body 160, a mounting groove is formed in the first cover body 150, a mounting bar is arranged on the second cover body 160, the mounting bar is matched with the mounting groove, so that the first cover body 150 is conveniently matched with the second cover body 160, when the first cover body 150 is matched with the second cover body 160, the first cover body 150 is fixedly connected with the second cover body 160 through screws, so that the first cover body 150 and the second cover body 160 protect the brake device, the brake device is prevented from being damaged, when the brake device is used, only the driving shaft 131 and the driven shaft 132 need to be connected in an installing mode, and operation is convenient.

Fig. 9 is a schematic structural diagram of a first cover 150, a brake spring 120 and a driving shaft 131 in an embodiment of the present application, and fig. 10 is a schematic structural diagram of a second cover 160, a brake spring 120 and a driven shaft 132 in an embodiment of the present application, in a use process of the brake apparatus, as shown in fig. 9, when the driving shaft 131 rotates, the driving shaft 131 rotates clockwise or counterclockwise, which drives the brake spring 120 to roll inward, so that the brake spring 120 is separated from an inner wall of a metal ring, and no braking force is generated during rotation; as shown in fig. 10, when the driven shaft 132 rotates, the driven shaft 132 rotates clockwise or counterclockwise, and after passing through a section of virtual position, the driven shaft 132 drives the brake spring 120 to expand outward, so that the brake spring 120 supports the inner wall of the metal ring tightly, thereby generating braking force to prevent the output shaft from rotating continuously, and the larger the rotating force is, the stronger the braking force is.

As an improvement of the first embodiment of the present application, there are two first through holes 151, two second through holes 161, two transmission shafts 130, two first through holes 151 and two second through holes 161, two transmission shafts 130 respectively pass through the two first through holes 151 and the two second through holes 161, the distances from the two transmission shafts to the same side of the first cover are different, there are two brake springs 120 and two brake rings, the two transmission shafts are parallel and obliquely arranged in parallel, the two brake springs 120 and the two brake rings are respectively arranged on the two transmission shafts 130, and two transmission shafts 130 are arranged, so that the brake device can be conveniently used when the double-layer curtain fabric 300 is used without arranging a plurality of brake devices occupying installation space, wherein, the two first through holes 151 are parallel and obliquely arranged in parallel, and the two second through holes 161 are arranged corresponding to the two first through holes 151; after the installation is finished, the distances from the two transmission shafts to the ground are unequal, and the two transmission shafts are arranged in a high-low mode as shown in figure 1.

Further, be equipped with connecting hole 132b on the driven shaft 132, be equipped with exhaust hole 132c on the lateral wall of driven shaft 132, exhaust hole 132c with connecting hole 132b communicates with each other, when connecting driven shaft 132, will connect the transfer line 200 that uses and stretch into connecting hole 132b department on the driven shaft 132, because of be equipped with exhaust hole 132c on the lateral wall of driven shaft 132, transfer line 200 stretches into when connecting hole 132b department, the inside air of connecting hole 132b can be followed exhaust hole 132c department is discharged, and the transfer line 200 of being convenient for stretches into connecting hole 132b department and is connected with it, wherein, transfer line 200 with connecting hole 132 b's connection is closely matched.

Fig. 11 is an overall structural view of a motorized window treatment of the present application, and fig. 12 is an exploded view of an overall structure of a motorized window treatment of the present application, as shown in fig. 11 and 12, which discloses a motorized window treatment as a second embodiment of the present application, the motorized window treatment including a brake device 100, a transmission rod 200, a cord winder 500, a first rail, a second rail, a first retractable cord, a second retractable cord, a curtain cloth 300, and a motor 400 according to any one of the above embodiments, the transmission rod 200 being connected to a driven shaft 132 of the brake device 100; the rope winder 500 is arranged on the transmission rod 200; the first rail is disposed below the driving lever 200; the second track is arranged below the first track; the first retractable rope is respectively connected with the rope winder 500 and the first track; the second retractable rope is respectively connected with the rope winder 500 and the second track; the night curtain is arranged between the first rail and the second rail, one end of the night curtain is connected with the first rail, and the other end of the night curtain is connected with the second rail; an output shaft of the motor 400 is connected with a driving shaft 131 of the brake device 100, and the motor 400 is used for controlling the driving shaft 131 of the brake device 100 to rotate; when the motor 400 is started, the output shaft of the motor 400 rotates to rotate the driving shaft 131 of the brake device 100, so as to drive the transmission rod 200 to rotate, the transmission rod 200 rotates to drive the rope winder 500 to rotate, so as to drive the first retractable rope and the second retractable rope to retract or put down the ropes, so that the heights of the first track and the second track are changed, and the day curtain and the night curtain are put down or put down; when the electric curtain needs to be folded or unfolded, the motor 400 is started to drive the driving shaft 131 to rotate; after the motor 400 is stopped, if the driving rod 200 is driven to rotate by the day curtain and the night curtain due to the excessive weight, the driving rod 200 is connected with the driven shaft 132, and the brake device 100 is started to stop the driving rod 200 from rotating, so that the positions of the day curtain and the night curtain are not changed.

Further, two first through holes 151 are formed in the first cover 150, two second through holes 161 are formed in the second cover 160, the two first through holes 151 and the two second through holes 161 are correspondingly formed, and the first through holes 151 are communicated with the second through holes 161; the motor 400 is a dual-output motor 400, and the dual-output motor 400 is provided with two output shafts which are obliquely arranged and are arranged corresponding to the two first through holes 151; two transmission rods 200 are arranged, and the two transmission rods 200 are obliquely arranged corresponding to the two output shafts of the motor 400; the brake devices 100 are provided with two sets, two sets of the brake devices 100 are respectively provided at two first through holes 151, the output shaft of the motor 400 is connected with the driving shaft 131, the transmission rod 200 is connected with the driven shaft 132, wherein, in the embodiment, two brake rings are integrally formed with the second cover body 160 and are arranged at two positions corresponding to the output shaft of the motor 400, the two driving shafts 131 and the two driven shafts 132 are respectively located at two positions corresponding to the two brake rings, and the two brake springs 120 are respectively located at two positions corresponding to the two brake rings.

It should be noted that the inventive concept of the present application can form many embodiments, but the space of the application document is limited, and the application document cannot be listed one by one, so that on the premise of no conflict, the above-described embodiments or technical features can be combined arbitrarily to form a new embodiment, and after the embodiments or technical features are combined, the original technical effect will be enhanced.

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

Claims (10)

1. A brake apparatus, comprising:

a brake ring;

the brake spring is arranged in the brake ring; and

the transmission shaft comprises a driving shaft and a driven shaft, the driving shaft drives the driven shaft to rotate, the brake spring is sleeved on the transmission shaft, a first stop block is arranged on the driving shaft, and a second stop block is arranged on the driven shaft;

the first stop block and the second stop block are positioned in the brake spring; when the driving shaft rotates, the first stop block is driven to rotate, so that the brake spring is driven to contract inwards to be separated from the brake ring; the driven shaft drives the second stop block to rotate when rotating, and the outer surface of the brake spring is abutted to the inner wall of the brake ring, so that the brake spring is driven to expand and is tightly matched with the brake ring.

2. The brake apparatus as claimed in claim 1, wherein there are two said brake rings, two said brake springs, two said transmission shafts being parallel and diagonal, and two said brake springs being respectively fitted over two said transmission shafts and located in two said brake rings.

3. The brake device according to claim 2, further comprising a first cover and a second cover, wherein the first cover and the second cover are covered by the first cover, the first cover is provided with a first through hole, the second cover is provided with a second through hole, the number of the first through holes is two, the number of the second through holes is two, the two first through holes and the two second through holes are correspondingly arranged, the two transmission shafts respectively penetrate through the two first through holes and the two second through holes, and the distances from the two transmission shafts to the same side of the first cover are different.

4. The brake apparatus according to claim 1, further comprising two receiving blocks, wherein the two receiving blocks are respectively disposed on the driving shaft and the driven shaft, and the brake spring is disposed between the two receiving blocks.

5. The brake apparatus as claimed in claim 1, wherein a first space and a second space are defined between the first stopper and the second stopper, the first space being defined by one end of the first stopper and the other end of the second stopper; the second spacing space is formed by the other end of the first stop block and one end of the second stop block, and the first stop block, the first spacing space, the second stop block and the second spacing space are connected end to end; one end of the brake spring is located in the first spacing space, and the other end of the brake spring is located in the second spacing space.

6. The brake device according to claim 1, wherein the first stopper and the second stopper are arc-shaped protrusions, the arc length of the first stopper is greater than that of the second stopper, and the circle having the arc shape of the first stopper and the circle having the arc shape of the second stopper have the same center and radius;

the arc length of the outer ring of the first stop block is half of that of the second stop block.

7. The brake device according to claim 1, wherein the driven shaft is provided with a connecting hole, the side wall of the driven shaft is provided with an exhaust hole, the exhaust hole is communicated with the connecting hole, and the brake spring is made of metal.

8. The brake device according to claim 1, wherein the brake device further comprises a first cover body and a second cover body, the first cover body is covered with the second cover body, a first through hole is formed in the first cover body, a second through hole is formed in the second cover body, when the first cover body is covered with the second cover body, the first through hole is communicated with the second through hole, the driving shaft is matched with the first cover body, the bearing block on the driving shaft is abutted against the hole bottom of the first through hole to enable the driving shaft to be connected with the first cover body, the driven shaft is matched with the second cover body, and the bearing block on the driven shaft is abutted against the hole bottom of the second through hole to enable the driven shaft to be connected with the second cover body.

9. A motorized window treatment, comprising:

the brake device according to any one of claims 1 to 8;

the transmission rod is connected with a driven shaft of the brake device;

the curtain cloth is arranged on the transmission rod, and the transmission rod rotates to drive the curtain cloth to ascend or descend;

and the output shaft of the motor is connected with the driving shaft of the brake device, and the motor is used for controlling the driving shaft of the brake device to rotate.

10. The motorized window treatment of claim 9, further comprising:

the rope winder is arranged on the transmission rod;

the first track is arranged below the transmission rod;

a second rail disposed below the first rail;

the first rope winding and unwinding device is connected with the first rail;

the second rope winding and unwinding device is connected with the rope winder and the second rail respectively;

the curtain cloth comprises a day curtain and a night curtain, the day curtain is arranged between the transmission rod and the first rail, one end of the day curtain is connected with the transmission rod, the other end of the day curtain is connected with the first rail, the night curtain is arranged between the first rail and the second rail, one end of the night curtain is connected with the first rail, and the other end of the night curtain is connected with the second rail;

the first cover body is provided with two first through holes, the second cover body is provided with two second through holes, the two first through holes and the two second through holes are correspondingly arranged, and the first through holes are communicated with the second through holes;

the motor is a double-output motor, the double-output motor is provided with two output shafts which are obliquely arranged and correspond to the two first through holes;

the two transmission rods are obliquely arranged corresponding to the two output shafts of the motor;

the brake device is provided with two sets, the two sets of brake devices are respectively arranged at the two first through holes, two output shafts of the double-output motor are respectively connected with the two driving shafts, and the two driven shafts are respectively connected with the two transmission rods.

Images