Motor for electric curtain and electric curtain with motor

Abstract

The utility model relates to the field of curtains, in particular to a motor for an electric curtain and the electric curtain with the motor. The motor provided by the utility model comprises an upper cover, a lower cover and a connecting section for connecting the upper cover and the lower cover, wherein the connecting section is divided into a plurality of sections; an outer pipe is connected between the upper cover and the lower cover and covers the outer side of the connecting section, an elastic component is arranged between two sections of the connecting section, and the elastic component can vertically stretch out and draw back to adjust the distance between the two sections, so that the total size of the connecting section is adjusted to be matched with the total size of the outer pipe. The motor is not easily influenced by dimensional tolerance of parts during assembly, and is compact in structure and neat and attractive in appearance.

Description

Technical Field

[0001] This utility model relates to the field of curtains, and more particularly to a motor for electric curtains and an electric curtain having the motor. Background Technology

[0002] The opening and closing of electric curtains is achieved by a motor. Existing motors mainly consist of an upper cover and a lower cover, with multiple components between them forming a connecting section. This connecting section is divided into several segments. An outer tube connects the upper and lower covers, covering the connecting section and protecting it while also making the motor's overall appearance more neat and aesthetically pleasing. During manufacturing, these motor components are susceptible to dimensional tolerances due to variations in mold precision and processing equipment. As multiple components combine to form the connecting section, these dimensional tolerances accumulate, causing the total size of the connecting section to be larger or smaller than the design size. If the total size of the connecting section is larger than the outer tube, the distance between the upper and lower covers will be greater than the total size of the outer tube. This results in a gap at the connection point between the outer tube and the upper or lower cover during motor assembly, affecting the motor's appearance and allowing dust to enter the motor, impacting its performance and lifespan. Conversely, if the total size is smaller than the outer tube, the distance between the upper and lower covers will be less than the total size of the outer tube, preventing the outer tube from being properly installed between the upper and lower covers during motor assembly. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a motor for electric curtains and an electric curtain with the motor. The motor is not easily affected by the dimensional tolerance of its components during assembly, and has a compact structure and a neat and beautiful appearance.

[0004] To solve the above problems, this utility model provides an electric curtain motor, including an upper cover and a lower cover, and a connecting section connecting the upper cover and the lower cover. The connecting section is divided into multiple segments. An outer tube is connected between the upper cover and the lower cover, which covers the outside of the connecting section. An elastic component is provided between two segments of the connecting section, which can vertically extend and retract to adjust the distance between the two segments and thus adjust the overall size of the connecting section.

[0005] Furthermore, the motor's output shaft extends from the top cover, and / or its power cord extends from the bottom cover.

[0006] Furthermore, a wire hole is opened on the bottom surface of the lower cover, and the inner end of the power cord is horizontally pressed and installed on the inner side of the bottom surface of the lower cover, while the outer end passes through the wire hole with the outer end facing downward.

[0007] This utility model also provides an electric curtain, which has a horizontal track and a curtain body hanging on the horizontal track. The curtain body is driven by a motor to move along the horizontal track to open and close. The motor is specifically as described above.

[0008] Furthermore, a transmission box is installed on the transverse track, and the motor output shaft extends from the top surface of the cover and is inserted into the transmission box to drive the connecting curtain.

[0009] Furthermore, with the motor output shaft already inserted into the transmission box, the top surface of the motor cover and the bottom surface of the transmission box rotate relative to each other in a circumferential manner to achieve mutual engagement.

[0010] Furthermore, one of the two surfaces, the bottom surface of the transmission box and the top surface of the motor cover, is provided with an elastic limiting post, and the other surface is provided with an elastic limiting groove. The top surface of the motor cover and the bottom surface of the transmission box rotate relative to each other in a circumferential manner so that the elastic limiting post and the elastic limiting groove are aligned with each other. In this state, the elastic limiting post is inserted into the elastic limiting groove for circumferential limiting.

[0011] Furthermore, LED strips are installed on the sides of the transverse track; power supply contacts are provided on the top surface of the motor cover, and the motor's power cord is connected to the power supply contacts via internal wires; corresponding power take-off contacts are provided on the bottom surface of the transmission box, and the power take-off contacts are connected to the LED strips via internal wires to supply power to the LED strips; the top surface of the motor cover and the bottom surface of the transmission box rotate circumferentially to align the power supply contacts and the power take-off contacts to achieve electrical connection.

[0012] Furthermore, the power supply contact is located at the edge of the top surface of the motor cover, and the internal wires of the motor through which the power supply line of the motor connects to the power supply contact (1115) are specifically routed at the edge of the motor interior; the power take-off contact is located at the edge of the bottom surface of the transmission box, and the wires of the power take-off contact connecting to the light strip are specifically routed at the edge of the transmission box interior.

[0013] Beneficial effects: The motor of this electric curtain has a connecting section divided into multiple segments, with an elastic component between two segments. During assembly, if the total size of the connecting section is larger than the outer tube, the connecting section is squeezed to shorten the elastic component, thus shortening the distance between the two connecting segments with the elastic component. This reduces the actual size of the connecting section to match the outer tube, preventing gaps from forming at the connection between the outer tube and the upper or lower cover, and preventing dust from entering the motor and affecting its performance. If the total size of the connecting section is smaller than the outer tube, the connecting section is pulled to lengthen the elastic component, increasing the distance between the two connecting segments with the elastic component. This increases the total size of the connecting section to match the outer tube, allowing the outer tube to be smoothly installed between the upper and lower covers. Attached Figure Description

[0014] Figure 1 This is a simplified structural diagram of an electric curtain.

[0015] Figure 2 This is a simplified structural diagram of the motor (without the outer tube covering the connecting section).

[0016] Figure 3 This is a simplified structural diagram of the motor's lower cover.

[0017] Figure 4 This is a simplified structural diagram of the upper part of the motor.

[0018] Figure 5 This is a simplified schematic diagram of the transmission box from below.

[0019] Symbol explanation:

[0020] 1-Motor; 2-Rail; 3-Transmission box; 4-Power cord; 11-Upper cover; 12-Lower cover; 13-Outer tube; 14-U-shaped elastic connector; 15-Connecting section; 31-Bottom surface of transmission box; 41-Internal connection end of power cord; 42-External connection end of power cord; 111-Top surface of motor upper cover; 121-Wire hole; 151-First connecting section; 152-Second connecting section; 153-Third connecting section; 154-Fourth connecting section; 311-Circular protrusion; 312-Second locking block; 313-Elastic limiting post; 314-Driven wheel; 315-Power contact; 1111-Circular groove; 1112-First locking block; 1113-Elastic limiting groove; 1114-Output shaft; 1115-Power contact. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to specific embodiments.

[0022] Electric curtains, such as Figure 1 As shown, a horizontal track 2 and a curtain (not shown in the attached diagram) suspended on the horizontal track 2 are provided, which can move along the horizontal track 2 to open and close. A transmission box 3 is installed on the horizontal track 2, and the motor 1 is connected to the horizontal track 2 via the transmission box 3. See Figure 2Multiple components are arranged between the upper cover 11 and the lower cover 12 of the motor, forming a connecting section 15 that connects the upper cover 11 and the lower cover 12. The connecting section 15 is divided into four segments from top to bottom: the first connecting section 151 is a motor mount (containing the motor); the second connecting section 152 and the third connecting section 153 form a connecting seat; and the fourth connecting section 154 is a circuit board cover. An outer tube 13 connects the upper cover 11 and the lower cover 12, covering the outside of the connecting section 15. A U-shaped elastic connector 14 made of POM material serves as an elastic component between the second connecting section 152 and the third connecting section 153. Dimensional tolerances exist during component manufacturing; when multiple components form the connecting section 15, these dimensional tolerances accumulate, causing the total size of the connecting section 15 to be larger or smaller than the outer tube, affecting motor assembly. The U-shaped elastic connector 14 can extend and retract vertically to adjust the distance between the second connecting segment 152 and the third connecting segment 153, thereby adjusting the overall size of the connecting segment 15 and eliminating the effects of accumulated dimensional tolerances. Specifically: if the overall size of the connecting segment 15 is larger than that of the outer tube 13, the connecting segment 15 is squeezed during assembly to shorten the U-shaped elastic connector 14, that is, to shorten the distance between the second connecting segment 152 and the third connecting segment 153, so that the overall size of the connecting segment 15 is reduced to match the outer tube 13, and no gap will be generated at the connection between the outer tube 13 and the upper cover 11 or the lower cover 12; if the overall size of the connecting segment 15 is smaller than that of the outer tube 13, the connecting segment 15 is pulled during assembly to lengthen the U-shaped elastic connector 14, that is, to increase the distance between the second connecting segment 152 and the third connecting segment 153, so that the overall size of the connecting segment 15 is increased to match the outer tube 13, and the outer tube 13 can be smoothly installed between the upper cover 11 and the lower cover 12.

[0023] See Figure 3 The bottom surface of the motor cover 12 has a wire hole 121. After the power cord 4 is bent, its inner end 41 is horizontally pressed and fixed to the inner side of the bottom surface of the cover 12, while its outer end 42 passes vertically downward through the wire hole 121 and out to the outside of the motor 1 to connect to the power supply and provide power to the motor 1. Because the power cord 4 has been bent, it can better resist the pulling force when stretched and is not easy to detach from the motor cover 12.

[0024] See Figure 4 A circular groove 1111 is provided in the center of the top surface 111 of the motor cover. The output shaft 1114 of the motor 1 extends upward from the center of the bottom of the circular groove 1111. Three first locking blocks 1112 extending radially towards the center are arranged at intervals around the side wall of the groove opening of the circular groove 1111. See Figure 5The bottom surface 31 of the transmission box 3 extends toward the top surface 111 of the motor cover, with a circular protrusion 311 corresponding to the circular groove 1111. A driven wheel 314 is provided in the middle of the circular protrusion 311, which is connected to the curtain body. The external gear on the outer side wall of the output shaft 1114 can mesh with the internal gear on the inner side wall of the driven wheel 341. Three radially outwardly extending second locking blocks 312 are arranged at intervals around the top of the side wall of the circular protrusion 311.

[0025] The connection operation between the top surface 111 of the motor cover and the bottom surface 31 of the transmission box is as follows: See Figure 4 , 5 The output shaft 1114 of motor 1 is aligned and inserted into the driven wheel 314 of transmission box 3 until the first locking block 1112 on the top of motor 1 moves upward past the annular protrusion 311 of transmission box 3, and the elastic limiting post 313 on the bottom surface 31 of transmission box is retracted by the upward pressure of the top surface 111 of motor cover; then, motor 1 is slightly rotated circumferentially relative to transmission box 3, firstly to move the first locking block 1112 on motor 1 circumferentially to the second locking block 314 of annular protrusion 311. The 12 components are axially locked together. Secondly, the elastic limiting groove 1113 on the top surface 111 of the motor cover moves circumferentially to align with the elastic limiting post 313 on the bottom surface 31 of the transmission box. The elastic limiting post 313 then retracts and inserts into the elastic limiting groove 1113, circumferentially limiting the motor 1 and the transmission box 3. Thirdly, the four power supply contacts 1115 at the edge of the top surface 111 of the motor cover align with the four power take-off contacts 315 at the edge of the bottom surface 31 of the transmission box. A light strip (not shown in the attached diagram) is installed on the side of the transverse track 2. The external power supply terminal 42 connects to an external power source and supplies power to the internal power supply terminal 41. The internal power supply terminal 41 supplies power to the motor 1 to drive the output shaft 1114 to rotate. The rotation of the output shaft 1114 drives the driven wheel 314 to rotate, causing the curtain to move along the transverse track 2 to achieve opening and closing. On the other hand, it supplies power to the power supply contact 1115 through the internal wires of the motor 1. The power supply contact 315 draws power from this and supplies power to the light strip through the wire connected to the light strip at the inner edge of the transmission box 3 (the electrical connection between the power supply terminal and the output shaft and the light strip is existing technology and will not be described in detail here).

[0026] The above description is merely an embodiment of the present invention and does not limit the scope of patent protection. Any non-substantial changes or substitutions made by those skilled in the art based on the present invention will still fall within the scope of patent protection.

Claims

1. An electric curtain motor, comprising an upper cover (11) and a lower cover (12) and a connecting section connecting the upper cover (11) and the lower cover (12), the connecting section being divided into multiple segments; an outer tube (13) is connected between the upper cover (11) and the lower cover (12), which covers the outside of the connecting section, characterized in that: The connecting section has an elastic component between two sections, which can extend and retract vertically to adjust the distance between the two sections and thus adjust the overall size of the connecting section.

2. The motor as described in claim 1, characterized in that: Its output shaft (1114) extends out from the upper cover (11), and / or its power cord (4) extends out from the lower cover.

3. The motor as described in claim 2, characterized in that: The bottom surface of the lower cover (12) has a wire hole (121). The inner end (41) of the power cord (4) is horizontally pressed and installed on the inner side of the bottom surface of the lower cover (12), while the outer end (42) passes through the wire hole (121) downwards.

4. An electric curtain, comprising a horizontal track (2) and a curtain body suspended on the horizontal track (2), wherein the curtain body is provided with a motor (1) to drive the curtain body to move along the horizontal track (2) to achieve opening and closing, characterized in that: The motor (1) is specifically the motor as described in any one of claims 1 to 3.

5. The curtain as described in claim 4, characterized in that: A transmission box (3) is mounted on the transverse track (2). The motor output shaft (1114) extends from the top surface (111) of the upper cover and is inserted into the transmission box (3) to drive the connecting curtain body via the transmission box (3).

6. The curtain as described in claim 5, characterized in that: With the motor output shaft (1114) inserted into the transmission box (3), the top surface (111) of the motor cover and the bottom surface (31) of the transmission box rotate relative to each other to achieve mutual engagement.

7. The curtain as described in claim 6, characterized in that: One of the two surfaces, the bottom surface (31) of the transmission box and the top surface (111) of the motor cover, is provided with an elastic limiting post (313) and the other surface is provided with an elastic limiting groove (1113). The top surface (111) of the motor cover and the bottom surface (31) of the transmission box rotate relative to each other so that the elastic limiting post (313) and the elastic limiting groove (1113) are aligned with each other. In this state, the elastic limiting post (313) is inserted into the elastic limiting groove (1113) for circumferential limiting.

8. The curtain as described in claim 6, characterized in that: The transverse track (2) is equipped with a light strip on its side; the top surface (111) of the motor cover is provided with a power supply contact (1115), and the power line (4) of the motor (1) is connected to the power supply contact (1115) through the internal wire of the motor (1); the bottom surface (31) of the transmission box is correspondingly provided with a power take-off contact (315), and the power take-off contact (315) is connected to the light strip through the internal wire of the transmission box (3) to take power to supply the light strip; the top surface (111) of the motor cover and the bottom surface (31) of the transmission box rotate in the circumferential direction to make the power supply contact (1115) and the power take-off contact (315) align and make contact to achieve electrical connection.

9. The curtain as described in claim 8, characterized in that: The power supply contact (1115) is located at the edge of the top surface (111) of the motor cover. The power supply line (4) of the motor (1) is connected to the power supply contact (1115) through the internal wire of the motor (1) which is specifically routed at the internal edge of the motor (1). The power take-off contact (315) is located at the edge of the bottom surface (31) of the transmission box. The power take-off contact (315) is connected to the light strip through the internal edge of the transmission box (3).

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