A motor and a roller shutter

Abstract

The utility model discloses a motor, include: casing, lid, speed reducer, motor and a plurality of circuit board, speed reducer and motor are connected, and motor is connected with at least one circuit board, and the burning through -hole is to the circuit board, and the plane of each circuit board is with the side of burning through -hole parallel, and the lid includes the cover plate department and the buckling portion who links up, and the cover plate department is arc board -like, and the buckling portion sets up in the side of cover plate department towards the accommodation cavity, and the bucking portion is connected with the casing, and the cover plate department is set up with lid hole, and the lid hole is communicated with the accommodation cavity. When needing to the circuit board is upgraded, the tool stick is inserted into the lid hole, and the lid is pried open upward, and the lid is removed, and the circuit board can be connected, and the burning is carried out through the burning hole, and the whole motor does not need to be disassembled, and the burning upgrade is convenient.

Description

Technical Field

[0001] This utility model relates to the field of electromechanical control technology, specifically to a motor and a roller shutter. Background Technology

[0002] Currently, the existing motor housing is a single unit. When programming is required, the motor needs to be disassembled to expose the PCB inside the housing for programming. The disassembly process is quite complicated and inconvenient for programming upgrades. Utility Model Content

[0003] To address the shortcomings of existing technologies, a motor and a roller shutter are provided.

[0004] To achieve the above objectives, this utility model provides a motor, comprising: a housing, a cover, a reducer, a motor, and several circuit boards. The housing is cylindrical and has a receiving cavity. The center line of the housing and the center line of the receiving cavity are collinear. A programming through hole is provided on the side wall of the receiving cavity. The reducer, the motor, and each of the circuit boards are respectively installed in the receiving cavity. The reducer and the motor are connected, and the motor is connected to at least one of the circuit boards. The programming through hole faces the circuit board, and the plane of each circuit board is parallel to the side of the programming through hole. The cover includes a cover plate portion and a fastening portion connected together. The cover plate portion is arc-shaped. The fastening portion is disposed on the side of the cover plate portion facing the receiving cavity and is engaged with the housing. The cover plate portion has a cover hole that communicates with the receiving cavity.

[0005] This utility model also provides a roller blind, including the above-mentioned motor, wherein the roller blind is driven by the motor described in any of the above embodiments.

[0006] The beneficial effects of this utility model are as follows: When installing the motor, the reducer, motor, and several circuit boards are installed along the extension direction of the center line of the accommodating cavity. The reducer and motor are connected, and the motor is connected to at least one circuit board. The position of the programming through-hole is pre-defined according to the position of the circuit board in the accommodating cavity, so that the circuit board in the accommodating cavity can be observed through the programming through-hole. With the center line of the accommodating cavity as the axis of rotation, the circuit board is rotated so that the plane of each circuit board is parallel to the side of the programming through-hole. The circuit boards are arranged in an orderly manner, which facilitates the observation of each circuit board and allows for the display of a larger area of ​​the circuit board through the programming through-hole, so as to program or observe the circuit board. With the fastening part of the cover facing the programming through-hole, the cover is pressed against the housing, and the fastening part is inserted into the accommodating cavity and engaged with the housing, completing the installation of the motor. When it is necessary to program and upgrade the circuit board later, a tool is inserted into the cover hole, the cover is pried open upwards, and the cover is removed. The circuit board can then be wired and programmed through the programming through-hole without disassembling the entire motor, which facilitates programming and upgrading. Attached Figure Description

[0007] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0008] Figure 1 This is a schematic diagram of the motor structure in the embodiment;

[0009] Figure 2 This is another structural schematic diagram of the motor in the embodiment;

[0010] Figure 3 This is another structural schematic diagram of the motor in the embodiment;

[0011] Figure 4 This is a schematic diagram of the debug trigger block in the embodiment;

[0012] Figure 5 This is another structural schematic diagram of the debug trigger block in the embodiment;

[0013] Figure 6 This is a schematic diagram of the cover structure in the embodiment;

[0014] Figure 7 This is another structural schematic diagram of the cover in the embodiment.

[0015] Explanation of reference numerals in the attached figures

[0016] 10. Motor; 100. Housing; 110. Burning through hole; 111. First side; 112. Second side; 113. Third side; 114. Fourth side; 200. Cover; 210. Cover plate; 211. Cover hole; 212. Limiting protrusion; 213. Notch; 214. Reinforcing rib; 220. Fastening part; 221. Fastening body; 222. Fastening protrusion; 300. Reducer; 400. Motor; 500. Circuit board; 500A. First circuit board; 500B. Second circuit board; 510. Adjustment button; 600. Adjustment trigger block; 610. Limiting part; 611. Circular groove; 612. Protrusion; 620. Pressing part; 630. Limiting piece. Detailed Implementation

[0017] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0018] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0019] Example 1

[0020] Please refer to Figures 1 to 3 This embodiment provides a motor 10, including: a housing 100, a cover 200, a reducer 300, a motor 400, and several circuit boards 500. The housing 100 is cylindrical and has a receiving cavity. The center line of the housing 100 and the center line of the receiving cavity are collinear. The side wall of the receiving cavity has a programming through hole 110. The reducer 300, the motor 400, and each of the circuit boards 500 are respectively installed in the receiving cavity. The reducer 300 and the motor 400 are connected. The housing 100 is connected to at least one of the circuit boards 500. The programming through hole 110 faces the circuit board 500. The plane of each circuit board 500 is parallel to one side of the programming through hole 110. The cover 200 includes a cover plate portion 210 and a fastening portion 220 connected to each other. The cover plate portion 210 is in the shape of an arc plate. The fastening portion 220 is disposed on the side of the cover plate portion 210 facing the accommodating cavity. The fastening portion 220 is engaged with the housing 100. The cover plate portion 210 has a cover hole 211, which communicates with the accommodating cavity.

[0021] In this embodiment, the accommodating cavity is formed along the extending direction of the housing 100. The housing 100 is cylindrical, and its centerline is a straight line passing through the centers of the circles on both sides of the housing 100. The accommodating cavity is also cylindrical, and its centerline is a straight line passing through the centers of the circles on both sides of the accommodating cavity. The centerline of the housing 100 and the centerline of the accommodating cavity are collinear, and the accommodating cavity is located at the center of the housing 100. A reducer 300, a motor 400, and various circuit boards 500 are sequentially installed within the accommodating cavity in the direction from the output end to the input end of the motor 10. The reducer 300 and the motor 400 are electrically connected, and the motor 400 is connected to at least one circuit board 500. A programming through-hole 110 is provided on the side wall of the accommodating cavity. The position of the programming through-hole 110 on the housing 100 is determined according to the position of the circuit boards 500, so that several circuit boards 500 can be observed through the programming through-hole 110. The size of the through-hole 110 on the housing 100 is determined based on the size of the circuit board 500 and the layout between the circuit boards 500. The length of the side of the through-hole 110 in the extending direction of the housing 100 is determined based on the length of the side of the circuit board 500 closest to the through-hole 110. For example, the length of the side of the through-hole 110 in the extending direction of the housing 100 is greater than 40% of the length of the side of the circuit board 500 closest to the through-hole 110. The chord length of the arc of the through-hole 110 in the circumferential direction of the housing 100 is determined based on the distance between two circuit boards 500. For example, the chord length of the arc of the through-hole 110 in the circumferential direction of the housing 100 is greater than the distance between two circuit boards 500. The two circuit boards 500 that determine the chord length of the through-hole 110 can be the two circuit boards 500 furthest apart, or they can be circuit boards 500 that need to communicate with external devices via wired connections or that need to be manually debugged.

[0022] In this embodiment, when installing the motor 10, the reducer 300, the motor 400, and several circuit boards 500 are installed along the extension direction of the center line of the accommodating cavity. The reducer 300 and the motor 400 are connected, and the motor 400 is connected to at least one circuit board 500. The position of the programming through hole 110 is pre-opened according to the position of the circuit board 500 in the accommodating cavity, so that the circuit board 500 in the accommodating cavity can be observed through the programming through hole 110. With the center line of the accommodating cavity as the axis of rotation, the position of the circuit board 500 is rotated and adjusted so that the plane of one circuit board 500 is parallel to one side of the programming through hole 110. The circuit boards 500 are arranged in an orderly manner, which facilitates the observation of each circuit board 500 and facilitates the display of a larger area of ​​the circuit board 500 through the programming hole, so as to program or observe the circuit board 500. With the fastening part 220 of the cover 200 facing the programming through hole 110, press the cover 200 against the housing 100. The fastening part 220 snaps into the receiving cavity, and the fastening part 220 engages with the housing 100, completing the installation of the motor 10. When it is necessary to program and upgrade the circuit board 500 later, insert a tool into the cover hole 211, pry open the cover 200 upwards, remove the cover 200, and then wire and program the circuit board 500 through the programming hole without disassembling the entire motor 10, which facilitates programming and upgrading.

[0023] refer to Figures 2 to 3 In one embodiment, the side of the programming via 110 includes a first side 111, a second side 112, a third side 113, and a fourth side 114 connected end to end. The first side 111, the second side 112, the third side 113, and the fourth side 114 form the programming via 110. The first side 111 and the third side 113 are parallel to the center line of the housing 100, and the second side 112 and the fourth side 114 extend circumferentially along the housing 100. The circuit board 500 includes a first circuit board 500A and a second circuit board 500B. One side of the first circuit board 500A is close to and parallel to the first side 111, and one side of the second circuit board 500B is close to and parallel to the third side 113.

[0024] In this embodiment, the lengths of the first side 111 and the third side 113 are equal. The first side 111 and the third side 113 of the burning through hole 110 are aligned and aligned with each other. The first side 111 and the third side 113 are straight. The distance between the first side 111 and the third side 113 is the chord length of the arc side of the burning through hole 110. There are two circuit boards 500. The surface of each circuit board 500 is perpendicular to the plane where the first side 111 and the third side 113 are located. The projection lines of the two circuit boards 500 on the plane where the first side 111 and the third side 113 are located are between the first side 111 and the third side 113, so that the two parallel circuit boards 500 can be observed through the burning through hole 110, and it is convenient to observe the circuit structure on the two opposite sides of the two circuit boards 500. The second side 112 and the fourth side 114 are both arc-shaped and are arranged circumferentially along the housing 100. The second side 112 and the fourth side 114 are of equal length and are aligned with each other. The programming through-hole 110 forms a rectangular programming through-hole 110. Two parallel circuit boards 500 can be observed through the programming through-hole 110. One circuit board 500 is close to the first side 111, and the other circuit board 500 is close to the third side 113. The distance between the two circuit boards 500 is relatively large, which facilitates the operation of the circuit boards 500.

[0025] refer to Figure 2 In one embodiment, the central angle of the arc corresponding to the burning through hole 110 in the circumferential direction of the housing 100 is less than 100 degrees.

[0026] In this embodiment, the through-hole 110 has a side extending in the circumferential direction of the housing 100, such as the second side 112 and the fourth side 114. The side extending in the circumferential direction of the housing 100 is an arc, and the center of the arc is on the center line of the housing 100. The central angle of the arc is set within 100 degrees to avoid the through-hole 110 being too large and affecting the stability of the housing 100.

[0027] refer to Figures 2 to 3 In one embodiment, the side of the first circuit board 500A facing the second circuit board 500B is provided with at least one of the following: a communication interface, an electronic button, a capacitor, a resistor, an inductor, a diode, a transistor, and a field-effect transistor; and / or, the side of the second circuit board 500B facing the first circuit board 500A is provided with at least one of the following: a communication interface, an electronic button, a capacitor, a resistor, an inductor, a diode, a transistor, and a field-effect transistor.

[0028] In this embodiment, the area between the side of the first circuit board 500A facing the second circuit board 500B and the side of the second circuit board 500B facing the first circuit board 500A is opposite to the programming via 110. The side of the first circuit board 500A facing the second circuit board 500B and the side of the second circuit board 500B facing the first circuit board 500A are easily observable through the programming via 110. Electronic components are arranged on the side of the first circuit board 500A facing the second circuit board 500B and / or on the side of the second circuit board 500B facing the first circuit board 500A, so that more electronic components are arranged at the programming via 110, facilitating observation and operation. The electronic components can be at least one of the following: communication interface, electronic button, capacitor, resistor, inductor, diode, transistor, and field-effect transistor. For example, an RS485 interface is provided on the first circuit board 500A, and a debugging button 510 for debugging the motor 10 is provided on the second circuit board 500B.

[0029] refer to Figures 4 to 6 In one embodiment, the motor 10 further includes a debugging trigger block 600, which includes a limiting part 610 and a pressing part 620 connected to each other. The width of the limiting part 610 is greater than the width of the pressing part 620. At least one of the circuit boards 500 is electrically connected to a debugging button 510, which is used to control the motor 10 to enter and / or exit the code pairing state. The cover plate 210 has a button hole. One side of the limiting part 610 faces the debugging button 510, and the other side of the limiting part 610 is located on the side of the cover plate 210 facing the receiving cavity. The pressing part 620 passes through the button hole.

[0030] In this embodiment, a debugging button 510 is electrically connected to the second circuit board 500B. Pressing the debugging button 510 controls the motor 10 to enter and / or exit the pairing state. The debugging button 510 is located on the side of the second circuit board 500B facing the first circuit board 500A, and the programming through hole 110 faces the debugging button 510. When the cover plate is placed on the programming through hole 110, the button hole is aligned with the debugging button 510. The pressing part 620 of the debugging trigger block 600 passes through the button hole. The side of the cover plate 210 facing the adjustment button 510 is arc-shaped, protruding outward from the motor 10. The side of the cover plate 210 facing the adjustment button 510 also forms a concave surface. The width of the limiting part 610 of the adjustment trigger block 600 is greater than the width of the pressing part 620, and the width of the limiting part 610 is greater than the diameter of the button hole. The limiting part 610 fits into the concave surface of the cover plate 210 facing the adjustment button 510. The limiting part 610 is positioned between the cover plate 210 and the adjustment button 510, and it contacts the adjustment button 510. Therefore, when the pressing part 620 is pressed, the limiting part 610 presses against the adjustment button 510, causing the motor 10 to enter and / or exit the pairing state.

[0031] refer to Figures 6 to 7 In one embodiment, the side of the limiting part 610 facing away from the debugging button 510 is an arc-shaped plate surface. The limiting part 610 is embedded in the cover plate part 210. A limiting strip 212 is provided on the side of the cover plate part 210 facing the debugging button 510. The limiting strip 212 is arranged along the circumference of the housing 100. The side of the limiting part 610 is in contact with the limiting strip 212.

[0032] In this embodiment, the side of the limiting part 610 facing away from the adjustment button 510 is an arc-shaped plate surface, that is, the side of the limiting part 610 that contacts the cover plate 210 is an arc-shaped plate surface. The center of the limiting part 610 and the center of the cover plate 210 are both on the center line of the housing 100, so that the limiting part 610 and the cover plate 210 fit together more closely. The limiting part 610 abuts against a fastening part 220 on the side near the first side 111, and abuts against another fastening part 220 on the side near the third side 113. The cover plate part 210 is provided with a limiting protrusion 212, which is arranged along the circumference of the housing 100. The limiting part 610 contacts the limiting protrusion 212, which restricts the position of the limiting part 610 and prevents it from shifting. At the same time, it increases the friction between the limiting protrusion 212 and the limiting part 610, making it less likely for the debugging trigger block 600 to fall off. The side of the limiting part 610 facing the debugging button 510 is parallel to the surface of the debugging button 510, increasing the contact area between the limiting part 610 and the debugging button 510, which is beneficial for the limiting part 610 to trigger the debugging button 510. Both the limiting part 610 and the pressing part 620 are made of rubber, which is beneficial for the deformation of the adjustment trigger block 600 to trigger the adjustment button 510.

[0033] refer to Figures 5 to 6 Furthermore, a limiting piece 630 is connected to the end of the pressing part 620 away from the limiting part 610. The width of the limiting piece 630 is greater than the diameter of the button hole, and the limiting piece 630 is made of rubber. In this embodiment, the outer periphery of the limiting piece 630 abuts against the side of the cover part 210 facing away from the adjustment button 510, which helps to stabilize the position of the adjustment trigger block 600. The limiting piece 630 is less than 1mm thick and is easily deformable, which helps to deform the adjustment trigger block 600 to trigger the adjustment button 510.

[0034] In one embodiment, the debugging trigger block 600 is a rubber block, and the limiting part 610 has an annular groove 611 on the side facing the debugging button 510, the annular groove 611 surrounding the debugging button 510.

[0035] In this embodiment, when the debugging trigger block 600 presses the debugging button 510, the limiting part 610 presses against the debugging button 510. The force point of the limiting part 610 is near the annular groove 611, causing the annular groove 611 to deform. This makes it easier for the limiting part 610, which is surrounded by the annular groove 611, to press against the debugging button 510, thus facilitating the triggering of the debugging button 510. The limiting part 610 is provided with a protrusion 612, which contacts the debugging button 510. The protrusion 612 is located at the center of the annular groove 611. When the debugging trigger block 600 is pressed, the force point of the limiting part 610 is concentrated at the protrusion 612, where the pressure is strong, which is beneficial for triggering the debugging button 510. The diameter of the inner ring of the annular groove 611 is larger than the width of the debugging button 510.

[0036] refer to Figure 7 Furthermore, a reinforcing rib 214 is provided on the side of the cover plate 210 facing the adjustment button 510, and the reinforcing rib 214 extends from the side near the first side 111 to the side near the third side 113.

[0037] In this embodiment, the reinforcing rib 214 is arranged along the circumference of the housing 100 to strengthen the strength of the cover plate portion 210 in the circumference of the housing 100 and prevent the cover 200 from breaking when the housing 100 is pried open.

[0038] refer to Figure 2 , Figure 6 and Figure 7 In one embodiment, the fastening part 220 includes a plurality of fastening protrusions 222 and two fastening bodies 221 disposed opposite to each other. The fastening bodies are connected to the side of the cover part 210 facing the receiving cavity. The extending direction of the fastening bodies is parallel to the center line of the housing 100. Each fastening body is provided with a plurality of fastening protrusions 222 on the side facing away from the other fastening body. Each of the fastening protrusions 222 on a single fastening body is on the same straight line.

[0039] In this embodiment, the fastening body 221 is plate-shaped. A first fastening body 221 is disposed on the side of the cover plate portion 210 near the first side 111 of the burning through hole 110, and a second fastening body 221 is disposed on the side of the cover plate portion 210 near the third side 113 of the burning through hole 110. The first and second fastening bodies 221 are disposed on the side of the cover plate portion 210 facing the receiving cavity. The plate surfaces of the first and second fastening bodies 221 are perpendicular to the planes containing the first and third sides 111 and 113, respectively. The first fastening body 221 is disposed along the extending direction of the first side 111, and the second fastening body 221 is disposed along the extending direction of the third side 113. Several fastening protrusions 222 protrude from the side of the first fastening body 221 facing the first side 111, and several fastening protrusions 222 protrude from the side of the second fastening body 221 facing the third side 113. (See also...) Figure 6The outer contour of the fastening protrusions 222 is an arc, and all the fastening protrusions 222 are located on the same plane. The first fastening body 221 is inserted into the burning through hole 110. At this time, the third side 113 abuts against each of the fastening protrusions 222 of the second fastening body 221, and the cover 200 is pressed against the burning through hole 110. Each of the fastening protrusions 222 of the second fastening body 221 slides over the third side 113 and enters the burning through hole 110. Each of the fastening protrusions 222 of the first fastening body 221 is stuck on the first side 111, and each of the fastening protrusions 222 of the second fastening body 221 is stuck on the third side 113. The cover 200 is fastened on the burning through hole 110.

[0040] refer to Figure 1 In one embodiment, the cover hole 211 extends circumferentially along the housing 100, and the cover plate portion 210 is provided with a notch 213 that communicates with the cover hole 211 and extends to the edge of the cover plate portion 210.

[0041] In this embodiment, a pry bar is passed through the cover hole 211. Since the cover hole 211 extends circumferentially along the housing 100, from the side near the first side 111 to the side near the third side 113, it is convenient to place the pry bar perpendicular to the center line of the housing 100. The resistance point of the pry bar abuts against the inner wall of the burning through hole 110 near the center line of the housing 100. The fulcrum of the pry bar is on the inner wall of the burning through hole 110 near the outside of the housing 100. The resistance point is near the first side 111 or the third side 113, and the fulcrum is near the third side 113 or the first side 111. The pry bar pries the cover 200 toward the outside of the housing 100 so as to pry open the housing 100.

[0042] Example 2

[0043] This embodiment provides a roller blind, which is driven by a motor as described in any of the above embodiments.

[0044] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. An electric motor, characterized in that, include: The system comprises a housing, a cover, a reducer, a motor, and several circuit boards. The housing is cylindrical and has a accommodating cavity. The centerline of the housing and the centerline of the accommodating cavity are collinear. A programming through-hole is provided on the side wall of the accommodating cavity. The reducer, the motor, and each of the circuit boards are respectively installed in the accommodating cavity. The reducer and the motor are connected, and the motor is connected to at least one of the circuit boards. The programming through-hole faces the circuit board, and the plane of each circuit board is parallel to one side of the programming through-hole. The cover includes a connected cover plate portion and a fastening portion. The cover plate portion is arc-shaped, and the fastening portion is located on the side of the cover plate portion facing the accommodating cavity. The fastening portion engages with the housing. The cover plate portion has a cover hole that communicates with the accommodating cavity.

2. The motor according to claim 1, characterized in that, The side of the programming via includes a first side, a second side, a third side, and a fourth side connected end to end. The first side, the second side, the third side, and the fourth side form the programming via. The first side and the third side are parallel to the center line of the housing, and the second side and the fourth side extend circumferentially along the housing. The circuit board includes a first circuit board and a second circuit board. One side of the first circuit board is close to the first side and parallel to the first side, and one side of the second circuit board is close to the third side and parallel to the third side.

3. The motor according to claim 2, characterized in that, The first circuit board has at least one of the following components on the side facing the second circuit board: a communication interface, an electronic button, a capacitor, a resistor, an inductor, a diode, a transistor, and a field-effect transistor; and / or the second circuit board has at least one of the following components on the side facing the first circuit board: a communication interface, an electronic button, a capacitor, a resistor, an inductor, a diode, a transistor, and a field-effect transistor.

4. The motor according to claim 1, characterized in that, The motor further includes a debugging trigger block, which includes a limiting part and a pressing part connected to each other. The width of the limiting part is greater than the width of the pressing part. At least one of the circuit boards is electrically connected to a debugging button. The debugging button is used to control the motor to enter and / or exit the code pairing state. The cover plate has a button hole. One side of the limiting part faces the debugging button, and the other side of the limiting part is located on the side of the cover plate facing the accommodating cavity. The pressing part passes through the button hole.

5. The motor according to claim 4, characterized in that, The side of the limiting part facing away from the adjustment button is an arc-shaped plate surface. The limiting part is embedded in the cover plate. The side of the cover plate facing the adjustment button is provided with a limiting strip. The limiting strip is arranged along the circumference of the housing. The side of the limiting part is in contact with the limiting strip.

6. The motor according to claim 4, characterized in that, The debugging trigger block is a rubber block, and the limiting part has an annular groove on the side facing the debugging button, the annular groove surrounding the debugging button.

7. The motor according to claim 1, characterized in that, The fastening part includes a plurality of fastening protrusions and two fastening bodies arranged opposite each other. The fastening bodies are connected to the side of the cover plate facing the receiving cavity. The extension direction of the fastening bodies is parallel to the center line of the housing. Each fastening body has a plurality of fastening protrusions on the side facing away from the other fastening body. The fastening protrusions on a single fastening body are on the same straight line.

8. The motor according to claim 1, characterized in that, The central angle corresponding to the arc of the programming through hole in the circumferential direction of the housing is less than 100 degrees.

9. The motor according to claim 1, characterized in that, The cover hole extends circumferentially along the housing, and the cover plate portion is provided with a notch that communicates with the cover hole and extends to the edge of the cover plate portion.

10. A roller blind, characterized in that, The roller shutter is driven by the motor described in any one of claims 1-9.

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