A dual-head motor with high concentricity

Abstract

This utility model relates to a dual-head motor with high concentricity. It solves the technical problem of low concentricity in existing curtain motors. It includes a cylindrical motor housing with output shafts movably mounted at both ends. A motor body is housed within the housing, and a motor shaft rotatably mounts within it. One end of the motor shaft is connected to one of the output shafts via a first transmission assembly, and the other end is connected to a second transmission assembly via a drive shaft, which in turn connects to the remaining output shaft. The drive shaft is rotatably mounted within a circuit board cavity located inside the motor housing via a double-bearing mounting structure. A wire-passing hole communicating with the circuit board cavity is provided on the outside of the motor housing. The advantages are: the double-shaft mounting structure and rotating bearings provide support for the drive shaft and motor shaft, ensuring concentricity and improving transmission accuracy. The arc-shaped wiring plate and wire-holding groove facilitate the secure connection and fixing of power cords and other wire harnesses, ensuring effective wire harness installation.

Description

Technical Field

[0001] This utility model belongs to the technical field of curtain motor equipment, specifically relating to a double-headed motor with high concentricity. Background Technology

[0002] With the rapid development of smart homes, motorized curtains, as an important component, are also undergoing continuous innovation in their drive technology. In the current market, single-motor two-end drive and dual-motor two-end drive are two common curtain drive methods. Existing dual-motor two-end drive methods require two motors, resulting in higher costs and occupying more installation space. Single-motor two-end drive methods are relatively cheaper than dual-motor two-end drive methods; however, existing single-motor two-end drive methods have lower concentricity, which can easily lead to reduced motor load capacity and decreased transmission accuracy, affecting the user experience. Summary of the Invention

[0003] The purpose of this invention is to address the above-mentioned problems by providing a dual-head motor with high concentricity.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A dual-head motor with high concentricity includes a cylindrical motor housing. Output shafts are movably mounted at both ends of the motor housing. A motor body is housed within the motor housing. A motor shaft is rotatably mounted within the motor body, with both ends of the motor shaft passing through both ends of the motor body. One end of the motor shaft of the motor body is connected to one of the output shafts via a first transmission assembly. The other end of the motor shaft is connected to a second transmission assembly via a transmission shaft, and the second transmission assembly is connected to the remaining output shaft. The transmission shaft is rotatably mounted within a circuit board cavity located within the motor housing via a double-bearing mounting structure. A wire hole is provided on the outer side of the motor housing, communicating with the circuit board cavity. The first and second transmission assemblies facilitate the connection between the motor body and the output shafts for dual-end output. The double-bearing mounting structure provides support and lubrication for the transmission shaft, ensuring its transmission accuracy. The wire hole facilitates the connection of the power supply harness to the motor control circuit board within the circuit board cavity.

[0005] In the aforementioned high-concentricity dual-head motor, the motor housing is integrally formed from steel pipe, which can improve structural strength, ensure concentricity, and enhance the load capacity and transmission accuracy of the motor body.

[0006] In the aforementioned dual-head motor with high concentricity, both the first and second transmission components are planetary gear sets, which can improve the load capacity of the motor body and ensure transmission efficiency.

[0007] In the aforementioned high-concentricity dual-head motor, the motor body is housed in a motor mounting cylinder located inside the motor housing. One end of the motor mounting cylinder is connected to the first transmission housing via a connecting seat. The first transmission assembly is housed within the first transmission housing, with one of its output shafts rotatably positioned inside the end of the first transmission housing furthest from the motor mounting cylinder. The motor mounting cylinder provides protection for the motor body, and the first transmission housing facilitates the installation of the first transmission assembly while also providing protection.

[0008] In the aforementioned high concentricity dual-head motor, the motor shaft of the motor body extends through both ends of the motor mounting cylinder. Rotary bearings are respectively provided on the inner circumferential side of both ends of the motor mounting cylinder and between the motor shaft. The rotating bearings can support the motor shaft, ensuring the concentricity of the motor shaft and ensuring transmission accuracy.

[0009] In the aforementioned high-concentricity dual-head motor, the motor mounting cylinder at the end furthest from the connecting seat is coaxially connected to a circuit board mounting cylinder via a transmission seat, and the circuit board cavity is formed within the circuit board mounting cylinder. The transmission shaft passes sequentially through the transmission seat and the circuit board mounting cylinder. The circuit board mounting cylinder is connected to a second transmission housing. The second transmission assembly is disposed within the second transmission housing, and one of its output shafts is rotatably disposed on the inner side of the end of the second transmission housing furthest from the circuit board mounting cylinder. The circuit board mounting cylinder facilitates the placement of the motor control circuit board, and the second transmission housing provides protection for the second transmission assembly, thereby improving its service life.

[0010] In the aforementioned high concentricity dual-head motor, one end of the motor shaft is connected to the transmission shaft via a coupling located in the transmission seat. The transmission seat facilitates the installation and placement of the coupling, and the coupling can improve the transmission accuracy between the transmission shaft and the motor shaft.

[0011] In the aforementioned high concentricity dual-head motor, the dual-bearing mounting structure includes two oil-impregnated bearings disposed on the inner circumferential side of the circuit board mounting cylinder and sleeved on the outer circumferential side of the transmission shaft. The oil-impregnated bearings can support the transmission shaft, ensuring the concentricity of the transmission shaft and improving transmission accuracy.

[0012] In the aforementioned high-concentricity dual-head motor, the motor housing has an arc-shaped notch on its outer circumference. An arc-shaped terminal block is provided on the arc-shaped notch to close it, and the wire-passing hole is formed on the arc-shaped terminal block. The arc-shaped notch facilitates the assembly of power and signal lines, and the arc-shaped terminal block limits the movement of the power and signal lines and closes the arc-shaped notch, improving the protection of the motor control circuit board within the arc-shaped notch. Furthermore, the width of the arc-shaped terminal block is greater than the width of the arc-shaped notch, increasing the tolerance for left-right installation and ensuring installation consistency.

[0013] In the aforementioned dual-head motor with high concentricity, the wire hole is rectangular and one side of the wire hole is provided with several wire clamping grooves that communicate with the wire hole. The clamping grooves facilitate the clamping of power lines and signal lines, ensuring the stability of the wire harness clamping.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] 1. The dual-shaft mounting structure and rotating bearings can support the drive shaft and motor shaft, ensuring concentricity and improving transmission accuracy.

[0016] 2. The arc-shaped terminal block can easily close the arc-shaped notch, and the wire clamping groove can easily clamp and fix the power cord and other wire harnesses, ensuring the installation effect of the wire harness. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is an exploded view of the structure of this utility model.

[0019] Figure 3 This is a structural cross-sectional view of the present invention.

[0020] Figure 4 This is a cross-sectional view of the circuit board mounting cylinder in this utility model.

[0021] In the diagram: Motor housing 1, output shaft 11, circuit board cavity 12, wire hole 13, motor mounting cylinder 14, first transmission housing 15, transmission seat 16, circuit board mounting cylinder 17, second transmission housing 18, arc-shaped notch 19, motor body 2, motor shaft 21, first transmission assembly 3, transmission shaft 4, second transmission assembly 5, double bearing mounting structure 6, oil-impregnated bearing 61, connecting seat 7, rotating bearing 8, coupling 9, arc-shaped terminal block 10, wire clamping groove 101. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, this type of highly concentric dual-head motor includes a cylindrical motor housing 1. Output shafts 11 are movably mounted at both ends of the motor housing 1. A motor body 2 is housed inside the motor housing 1, and a motor shaft 21 is rotatably mounted inside the motor body 2, with both ends of the motor shaft 21 passing through both ends of the motor body 2. One end of the motor shaft 21 is connected to one of the output shafts 11 via a first transmission assembly 3, and the other end of the motor shaft 21 is connected to a second transmission assembly 5 via a transmission shaft 4. The second transmission assembly 5 is connected to the remaining output shaft 11. The transmission shaft 4 is connected via a double shaft... The mounting structure 6 is rotatably mounted in the circuit board cavity 12 located inside the motor housing 1. The circuit board cavity 12 facilitates the placement of the motor control circuit board. The outer side of the motor housing 1 is provided with a wire hole 13 that communicates with the circuit board cavity 12. The first transmission component 3 and the second transmission component 5 facilitate the transmission connection between the motor body 2 and the output shaft 11 for output at both ends. The double bearing mounting structure 6 supports and lubricates the transmission shaft 4 to ensure the transmission accuracy of the transmission shaft 4. The wire hole 13 facilitates the connection of the power cable harness to the motor control circuit board inside the circuit board cavity 12.

[0024] Specifically, the motor housing 1 is integrally formed from steel pipe, which can improve structural strength, ensure concentricity, and improve the load capacity and transmission accuracy of the motor body 2.

[0025] Both the first transmission component 3 and the second transmission component 5 are planetary gear sets, which can improve the load capacity of the motor body 2 and ensure transmission efficiency.

[0026] like Figure 1 , Figure 2 , Figure 3 As shown, the motor body 2 is installed inside the motor mounting cylinder 14 located inside the motor housing 1. One end of the motor mounting cylinder 14 is connected to the first transmission housing 15 via a connecting seat 7. The connecting seat 7 facilitates the placement of a coupling device to drive the output shaft 11 to the first transmission assembly 3. The first transmission assembly 3 is installed inside the first transmission housing 15, and one of its output shafts 11 is rotatably installed inside the end of the first transmission housing 15 away from the motor mounting cylinder 14. The motor mounting cylinder 14 can protect the motor body 2, and the first transmission housing 15 facilitates the installation of the first transmission assembly 3 and provides protection.

[0027] Furthermore, the two ends of the motor shaft 21 of the motor body 2 extend out of the two ends of the motor mounting cylinder 14 respectively. Rotary bearings 8 are respectively provided on the inner circumferential side of the two ends of the motor mounting cylinder 14 and between the motor shaft 21. The rotating bearings 8 can support the motor shaft 21, ensure the concentricity of the motor shaft 21, and ensure the transmission accuracy.

[0028] The motor mounting cylinder 14, at one end away from the connecting seat 7, is coaxially connected to the circuit board mounting cylinder 17 via the transmission seat 16. The circuit board cavity 12 is formed inside the circuit board mounting cylinder 17. The transmission shaft 4 passes through the transmission seat 16 and the circuit board mounting cylinder 17 in sequence. The circuit board mounting cylinder 17 is connected to the second transmission housing 18. The second transmission assembly 5 is disposed inside the second transmission housing 18, and one of its output shafts 11 is rotatably disposed inside the end of the second transmission housing 18 away from the circuit board mounting cylinder 17. The circuit board mounting cylinder 17 facilitates the placement of the motor control circuit board, and the second transmission housing 18 provides protection for the second transmission assembly 5, thereby improving the service life of the second transmission assembly 5.

[0029] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, one end of the motor shaft 21 is connected to the transmission shaft 4 through the coupling 9 located in the transmission seat 16. The transmission seat 16 facilitates the installation and placement of the coupling 16, and the coupling 9 can improve the transmission accuracy between the transmission shaft 4 and the motor shaft 21.

[0030] The dual-bearing mounting structure 6 includes two oil-impregnated bearings 61, which are set on the inner side of the circuit board mounting cylinder 17 and sleeved on the outer side of the transmission shaft 4. The oil-impregnated bearings 61 can support the transmission shaft 4, ensure the concentricity of the transmission shaft 4, and improve the transmission accuracy.

[0031] Specifically, the motor housing has an arc-shaped notch 19 extending outwards around its circumference. An arc-shaped terminal block 10 is provided on the arc-shaped notch 19 to close it, and a wire hole 13 is formed on the arc-shaped terminal block 10. The arc-shaped notch 19 facilitates the assembly of power cables and signal cables, and the arc-shaped terminal block 10 can limit the movement of the power cables and signal cables and close the arc-shaped notch 19, thus improving the protection of the motor control circuit board inside the arc-shaped notch 19. Furthermore, the width of the arc-shaped terminal block 10 is greater than the width of the arc-shaped notch 19, increasing the tolerance for misalignment during installation and ensuring installation consistency.

[0032] Combination Figure 1 , Figure 2As shown, the wire hole 13 is rectangular and the arc-shaped terminal block 10 has several wire clamping grooves 101 connected to the wire hole 13 on one side. The clamping grooves 131 can facilitate the clamping of power lines and signal lines, ensuring the stability of the wire harness clamping.

[0033] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0034] Although this document frequently uses terms such as motor housing 1, output shaft 11, circuit board cavity 12, wire hole 13, wire clamping groove 101, motor mounting cylinder 14, first transmission housing 15, transmission seat 16, circuit board mounting cylinder 17, second transmission housing 18, arc-shaped notch 19, motor body 2, motor shaft 21, first transmission assembly 3, transmission shaft 4, second transmission assembly 5, double bearing mounting structure 6, oil-impregnated bearing 61, connecting seat 7, rotating bearing 8, coupling 9, and arc-shaped terminal block 10, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A dual-head motor with high concentricity, comprising a cylindrical motor housing (1), wherein output shafts (11) are movably mounted at both ends of the motor housing (1), characterized in that, The motor housing (1) is provided with a motor body (2), and a motor shaft (21) is rotatably provided in the motor body (2), with both ends of the motor shaft (21) passing through both ends of the motor body (2). One end of the motor shaft (21) of the motor body (2) is connected to one of the output shafts (11) through a first transmission assembly (3), and the other end of the motor shaft (21) of the motor body (2) is connected to a second transmission assembly (5) through a transmission shaft (4), and the second transmission assembly (5) is connected to the remaining output shaft (11). The transmission shaft (4) is rotatably mounted in the circuit board cavity (12) located in the motor housing (1) through a double bearing mounting structure (6). The outside of the motor housing (1) is provided with a wire hole (13) that communicates with the circuit board cavity (12).

2. A double-headed motor with high concentricity according to claim 1, characterized in that, The motor housing (1) is integrally formed from a steel pipe.

3. A double-headed motor with high concentricity according to claim 1, characterized in that, Both the first transmission component (3) and the second transmission component (5) are planetary gear sets.

4. A double-headed motor with high concentricity according to claim 1, 2, or 3, characterized in that, The motor body (2) is located inside the motor mounting cylinder (14) inside the motor housing (1). One end of the motor mounting cylinder (14) is connected to the first transmission housing (15) via a connecting seat (7). The first transmission assembly (3) is located inside the first transmission housing (15), and one of its output shafts (11) is rotatably located inside the end of the first transmission housing (15) away from the motor mounting cylinder (14).

5. A double-headed motor with high concentricity according to claim 4, characterized in that, The motor shaft (21) of the motor body (2) extends through both ends of the motor mounting cylinder (14), and rotating bearings (8) are respectively provided between the inner circumferential sides of both ends of the motor mounting cylinder (14) and the motor shaft (21).

6. A double-headed motor with high concentricity according to claim 4, characterized in that, The motor mounting cylinder (14) is coaxially connected to the circuit board mounting cylinder (17) at one end away from the connecting seat (7) via the transmission seat (16), and the circuit board cavity (12) is formed inside the circuit board mounting cylinder (17). The transmission shaft (4) passes through the transmission seat (16) and the circuit board mounting cylinder (17) in sequence. The circuit board mounting cylinder (17) is connected to the second transmission housing (18). The second transmission assembly (5) is disposed inside the second transmission housing (18), and one of its output shafts (11) is rotatably disposed inside the end of the second transmission housing (18) away from the circuit board mounting cylinder (17).

7. A dual-head motor with high concentricity according to claim 6, characterized in that, One end of the motor shaft (21) is connected to the transmission shaft (4) via a coupling (9) located in the transmission seat (16).

8. A double-headed motor with high concentricity according to claim 6, characterized in that, The dual bearing mounting structure (6) includes two oil-impregnated bearings (61) which are disposed on the inner side of the circuit board mounting cylinder (17) and sleeved on the outer side of the drive shaft (4).

9. A double-headed motor with high concentricity according to claim 1, characterized in that, The motor housing (1) is provided with an arc-shaped notch (19) on its outer circumference. An arc-shaped terminal block (10) is provided on the arc-shaped notch (19) to close the arc-shaped notch (19), and the wire hole (13) is formed on the arc-shaped terminal block (10).

10. A dual-head motor with high concentricity according to claim 9, characterized in that, The wire hole (13) is rectangular and the arc-shaped terminal block (10) has several wire-holding grooves (101) on one side that are connected to the wire hole (13).

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