Electric curtain capable of achieving variable-speed adjustment

Abstract

The utility model relates to the technical field of curtains, in particular to an electric curtain capable of realizing variable-speed adjustment, which comprises an electric curtain body, the electric curtain body comprises a motor, a transmission case and a track, the electric curtain further comprises a mounting frame, the lower end face of the mounting frame is an arc-shaped concave surface, and the electric curtain body is connected in the arc-shaped concave surface in a liftable manner through a pulley assembly. A clamping assembly for clamping the electric curtain body is further arranged in the arc-shaped concave surface, and a transmission shaft, a first gear, a first bevel gear, a second bevel gear and a friction plate are arranged in the transmission box; by arranging the mounting frame, lifting of the electric curtain body can be achieved through cooperation of the pulley assembly and the transmission box, and therefore curtain cloth can be replaced conveniently, and the electric curtain body can be repaired and maintained conveniently; according to the electric curtain, the clamping assembly is arranged and matched with the pulley assembly, so that the electric curtain body is clamped and fixed in the arc-shaped concave surface, and the electric curtain body is prevented from moving in the working process.

Description

TECHNICAL FIELD

[0001] The utility model relates to a window curtain technical field, specifically to a kind of electric window curtain that can realize variable speed regulation. BACKGROUND

[0002] Electric window curtain is moved in track by motor and transmission box cooperation, to drive transmission belt, to control the opening and closing of window curtain, greatly facilitate people's life.

[0003] Further improvement of existing electric window curtain, by motor and transmission box cooperation realizes variable speed regulation, to meet the different needs of users, but, existing variable speed regulation electric window curtain needs to climb work when replacing curtain cloth or maintaining electric window curtain, on the one hand, it is inconvenient, on the other hand, there is certain danger. SUMMARY

[0004] The utility model aims at providing a kind of electric window curtain that is lifted by pulley assembly, to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of electric window curtain that can realize variable speed regulation, including electric window curtain body, the electric window curtain body includes motor, transmission box and track, further including mounting bracket, the lower end surface of the mounting bracket is arc concave, the electric window curtain body is liftablely connected in the arc concave by pulley assembly, the arc concave is also provided with the clamping assembly of clamping the electric window curtain body.

[0007] Preferably, transmission shaft, first gear, first bevel gear and friction plate are provided in the transmission box, one end of the transmission shaft is fixedly connected to the output end of the motor, the first gear is rotatably connected with the transmission shaft and is in mesh with transmission belt, the first bevel gear is rotatably connected with the transmission shaft, the first bevel gear is in mesh with second bevel gear, and a line winder is coaxially provided with the second bevel gear, the friction plate is slidably connected with the transmission shaft, the friction plate is located between the first gear and the first bevel gear, an electromagnet is provided on the first bevel gear, and a first spring is provided between the first bevel gear and the friction plate.

[0008] Preferably, the pulley assembly includes first steel wire rope and second steel wire rope, one end of the first steel wire rope and the second steel wire rope is connected to the line winder, the other end of the first steel wire rope is sequentially fixedly connected to one end of the electric window curtain body after passing through first steering wheel, first pulley and second pulley, the other end of the second steel wire rope is sequentially fixedly connected to the other end of the electric window curtain body after passing through first steering wheel and first pulley.

[0009] Preferably, the first steel wire rope and the second steel wire rope are fixedly connected to a connecting portion of the electric window curtain body, the connecting portion has an isosceles triangular cross section, and the connecting portion is fixedly arranged on a top surface of the electric window curtain body close to an end surface.

[0010] Preferably, an upper end surface of the electric window curtain body is provided with a protrusion, the clamping assembly comprises a telescopic rack, the telescopic rack is a double-sided rack, the telescopic rack is slidably connected to the mounting frame, a second spring is arranged between one end of the telescopic rack and the mounting frame, two groups of tooth surfaces of the telescopic rack are respectively in meshing connection with a second gear and a third gear, a first winding disc and a second winding disc are coaxially arranged with the second gear and the third gear respectively, the first winding disc and the second winding disc are connected to an end surface of a clamping portion through a third steel wire rope, the clamping portion has an L shape as a whole, the clamping portion is slidably connected to the electric window curtain body, and a third spring is arranged between the clamping portion and the electric window curtain body.

[0011] Compared with the prior art, the electric window curtain body has the following beneficial effects:

[0012] 1. The mounting frame is arranged, the lifting of the electric window curtain body can be realized through cooperation of the pulley assembly and the transmission box, and therefore it is convenient to replace curtain cloth and maintain and repair the electric window curtain body.

[0013] 2. The clamping assembly is arranged and cooperates with the pulley assembly, so that the electric window curtain body is clamped and fixed in the arc-shaped concave surface, and movement of the electric window curtain body in the working process is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 The overall structure schematic view of the electric window curtain body is shown in the figure.

[0015] Fig. 2 The structure schematic view of the electric window curtain body after the mounting frame shell is disassembled is shown in the figure.

[0016] Fig. 3 The internal structure schematic view of the transmission box is shown in the figure.

[0017] Fig. 4 The partial structure exploded view of the clamping assembly is shown in the figure.

[0018] In the figure: 1, electric curtain body; 101, motor; 102, transmission box; 103, track; 2, mounting frame; 3, arc concave surface; 4, transmission shaft; 5, first gear; 6, first bevel gear; 7, second bevel gear; 8, friction plate; 9, wire reel; 10, first spring; 11, first steering wheel; 12, first pulley; 13, second pulley; 14, connecting part; 15, protruding block; 16, telescopic rack; 17, second spring; 18, second gear; 19, third gear; 20, first wire reel; 21, second wire reel; 22, clamping part; 23, third spring; 24, first steel wire rope; 25, second steel wire rope; 26, third steel wire rope; 27, second steering wheel. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0020] Please refer to Figs. 1 to 4 The utility model provides a technical scheme:

[0021] An electric curtain capable of realizing speed regulation, comprising an electric curtain body 1, the electric curtain body 1 comprising a motor 101, a transmission box 102 and a track 103, the side surface of the track 103 being an arc surface, further comprising a mounting frame 2, the lower end surface of the mounting frame 2 being an arc concave surface 3, the electric curtain body 1 being connected to the arc concave surface 3 in a liftable manner through a pulley assembly, and the arc concave surface 3 further being provided with a clamping assembly for clamping the electric curtain body 1.

[0022] The transmission box 102 is provided with a transmission shaft 4, a first gear 5, a first bevel gear 6 and a friction plate 8, one end of the transmission shaft 4 being fixedly connected to the output end of the motor 101, the first gear 5 being rotatably connected to the transmission shaft 4 and being in mesh with a transmission belt, the first bevel gear 6 being rotatably connected to the transmission shaft 4, the first bevel gear 6 being in mesh with the second bevel gear 7, the wire reel 9 being coaxially arranged with the second bevel gear 7, the friction plate 8 being slidably connected to the transmission shaft 4, the friction plate 8 being slidable along the transmission shaft 4, the friction plate 8 being located between the first gear 5 and the first bevel gear 6, an electromagnet (not shown in the figure) being embedded on the side of the first bevel gear 6 opposite to the friction plate 8, the first spring 10 being arranged between the first bevel gear 6 and the friction plate 8, part of the first spring 10 being located in the groove at one end of the first bevel gear 6, and the first spring 10 not being in contact with the first bevel gear 6.

[0023] The pulley assembly comprises a first steel wire 24 and a second steel wire 25, one end of the first steel wire 24 and the second steel wire 25 is connected to the winding device 9, the other end of the first steel wire 24 is sequentially connected to the first electric window curtain body 1 through the first steering wheel 11, the first pulley 12 and the second pulley 13, and the other end of the second steel wire 25 is sequentially connected to the other end of the first electric window curtain body 1 through the first steering wheel 11 and the first pulley 12; the winding device 9, the first steel wire 24, the second steel wire 25, the first steering wheel 11, the first pulley 12 and the second pulley 13 described in the application are common components of the hand-operated lifting clothes hanger in the prior art, and the specific structure of the winding device 9, the first pulley 12 and the second pulley 13 will not be repeated.

[0024] The first steel wire 24 and the second steel wire 25 are fixedly connected to the connecting part 14 of the first electric window curtain body 1, the cross section of the connecting part 14 is an isosceles triangle, the connecting part 14 is fixedly arranged on the top surface of the first electric window curtain body 1 close to the end surface, and the purpose of arranging the connecting part 14 is to increase the height difference between the connecting point and the gravity center of the first electric window curtain body 1, so that the first electric window curtain body 1 is more stable during lifting.

[0025] The upper end surface of the first electric window curtain body 1 is provided with a protrusion 15, and the clamping assembly acts on the protrusion 15 to clamp the first electric window curtain body 1; the clamping assembly comprises a telescopic rack 16, the telescopic rack 16 is a double-sided rack, the telescopic rack 16 is slidably connected to the mounting frame 2, a second spring 17 is arranged between the telescopic rack 16 and the mounting frame 2 opposite to the free end, the two groups of tooth surfaces of the telescopic rack 16 are respectively engaged with a second gear 18 and a third gear 19, coaxial with the second gear 18 and the third gear 19 are respectively provided with a first winding disc 20 and a second winding disc 21, the first winding disc 20 and the second winding disc 21 are respectively connected to a third steel wire 26, the other end of the third steel wire 26 is connected to the end surface of a clamping part 22 through a second steering wheel 27, the clamping part 22 is L-shaped as a whole, the clamping part 22 is slidably connected to the first electric window curtain body 1, a third spring 23 is arranged between the clamping part 22 and the first electric window curtain body 1, the distance between the two groups of clamping parts 22 is greater than the length of the protrusion as much as possible, so that the clamping will not fail due to small deviation during the process that the first electric window curtain body 1 rises into the arc-shaped concave surface 3. The first winding disc 20 and the second winding disc 21 are ordinary winding devices, which are different from the winding device 9 described in the pulley assembly in the application, and the first winding disc 20 and the second winding disc 21 are located on opposite sides of the telescopic rack 16.

[0026] When the novel is used, in normal use process, the curtain is controlled to open and close as the existing electric curtain, when the curtain cloth needs to be replaced or the electric curtain body 1 needs to be maintained, the electromagnet is controlled to be powered, the magnetic force overcomes the elastic force of the first spring 10 to make the friction plate 8 separate from the first gear 5 and tightly contact with the first bevel gear 6, the motor 101 rotates, the first bevel gear 6 is driven to rotate through the friction force, the second bevel gear 7 rotates, and then the winding device 9 rotates and gradually releases the first steel wire rope 24 and the second steel wire rope 25 in the winding device 9, the electric curtain body 1 loses the pulling force of the first steel wire rope 24 and the second steel wire rope 25, the convex block 15 cannot provide sufficient supporting force for the telescopic rack 16, under the action of gravity, the electric curtain body 1 moves downward, at the same time, the clamping assembly loses the clamping effect, the telescopic rack 16 slides downward under the action of the second spring 17 and drives the second gear 18 and the third gear 19 to rotate, and then the first winding disc 20 and the second winding disc 21 rotate and release the third steel wire rope 26, the clamping part 22 is opened and gradually resets under the action of the third spring 23, finally the electric curtain body 1 completely separates from the arc-shaped concave surface 3 and is lowered to a suitable height, which brings convenience for replacing the curtain cloth or maintaining the electric curtain body 1, after completion, the motor 101 is controlled to rotate reversely, the first steel wire rope 24 and the second steel wire rope 25 are wound by the winding device 9, the electric curtain body 1 rises, after entering the arc-shaped concave surface 3, the convex block 15 contacts the bottom surface of the telescopic rack 16 and extrudes the telescopic rack 16, the telescopic rack 16 moves upward against the elastic force of the second spring 17, in the moving process, the second gear 18 and the third gear 19 are driven to rotate, and then the two groups of clamping parts 22 are relatively moved through the third steel wire rope 26, when the electric curtain body 1 rises to the set position, the clamping part 22 clamps the convex block 15, so that the electric curtain body 1 is relatively stably fixed in the arc-shaped concave surface 3 of the mounting frame 2, the electromagnet circuit is controlled and cut off, the friction plate 8 separates from the first bevel gear 6 and tightly contacts the first gear 5 under the action of the first spring 10, the transmission connection with the first gear 5 is realized through the friction force, and then the opening and closing of the curtain can be controlled through the rotation of the motor 101.

[0027] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A motorized window treatment capable of variable speed adjustment, characterized by: The utility model provides an electric curtain body (1) comprising a motor (101), a transmission box (102) and a track (103), and a mounting rack (2), the lower end surface of the mounting rack (2) is an arc concave surface (3), the electric curtain body (1) is connected in the arc concave surface (3) through a pulley assembly and can be lifted, and a clamping assembly for clamping the electric curtain body (1) is arranged in the arc concave surface (3).

2. The motorized window treatment capable of variable speed adjustment of claim 1, wherein: The transmission box (102) is provided with a transmission shaft (4), a first gear (5), a first bevel gear (6) and a friction plate (8), one end of the transmission shaft (4) is fixedly connected to the output end of the motor (101), the first gear (5) is rotatably connected to the transmission shaft (4) and is in gear engagement with a transmission belt, the first bevel gear (6) is rotatably connected to the transmission shaft (4), the first bevel gear (6) is in gear engagement with a second bevel gear (7), a wire winder (9) is coaxially arranged on the second bevel gear (7), the friction plate (8) is slidably connected to the transmission shaft (4), the friction plate (8) is located between the first gear (5) and the first bevel gear (6), an electromagnet is arranged on the first bevel gear (6), and a first spring (10) is arranged between the first bevel gear (6) and the friction plate (8).

3. A motorized window treatment capable of variable speed adjustment according to claim 2, wherein: The pulley assembly comprises a first steel wire rope (24) and a second steel wire rope (25), one end of the first steel wire rope (24) and the second steel wire rope (25) is connected to the wire winder (9), the other end of the first steel wire rope (24) is fixedly connected to one end of the electric curtain body (1) in sequence through a first steering wheel (11), a first pulley (12) and a second pulley (13), and the other end of the second steel wire rope (25) is fixedly connected to the other end of the electric curtain body (1) in sequence through the first steering wheel (11) and the first pulley (12).

4. The motorized window treatment capable of variable speed adjustment of claim 3, wherein: The first steel wire rope (24) and the second steel wire rope (25) are fixedly connected to a connecting portion (14) of the electric curtain body (1), the connecting portion (14) has an isosceles triangular cross section, and the connecting portion (14) is fixedly arranged on the top surface of the electric curtain body (1) close to an end surface.

5. The motorized window treatment capable of variable speed adjustment of claim 1, wherein: The upper end surface of the electric curtain body (1) is provided with a protrusion (15); the clamping assembly comprises a telescopic rack (16), the telescopic rack (16) is a double-sided rack, the telescopic rack (16) is slidably connected with the mounting frame (2), a second spring (17) is arranged between one end of the telescopic rack (16) and the mounting frame (2), two groups of tooth surfaces of the telescopic rack (16) are respectively engaged with a second gear (18) and a third gear (19), coaxial with the second gear (18) and the third gear (19), a first winding disc (20) and a second winding disc (21) are respectively arranged, the first winding disc (20) and the second winding disc (21) are connected with the end surface of a clamping part (22) through a third steel wire rope (26), the clamping part (22) is L-shaped as a whole, the clamping part (22) is slidably connected with the electric curtain body (1), and a third spring (23) is arranged between the clamping part (22) and the electric curtain body (1).

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