Motor-integrated roller, motor unit for motor-integrated roller, geared motor, method for manufacturing a motor unit for motor-integrated roller, and method for manufacturing a geared motor

Abstract

To provide a motor unit for a roller with a built-in motor that has a brake function.SOLUTION: A motor unit 10 for a roller with a built-in motor that is inserted into a separately prepared roller body 2 and constitutes the roller with the built-in motor includes an outer cylinder 20, a motor 12, a braking member 27, and a circuit board 18, and in the outer cylinder 20, the motor 12, the braking member 27, and the circuit board 18 are built-in, and inside the outer cylinder 20, the brake member 27 is positioned between the motor 12 and the circuit board 18, and inside the outer cylinder 20, the circuit board 18, the motor 12, and the brake member 27 are wired with each other.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a motor unit for a roller with a built-in motor that drives a roller body of the roller with a built-in motor. The present invention also relates to a method for manufacturing a motor unit for a roller with a built-in motor. Furthermore, the present invention relates to a roller with a built-in motor. Furthermore, the present invention relates to a guard motor and a method for manufacturing the guard motor.

Background Art

[0002] As a component of a roller conveyor device or the like, a roller with a built-in motor is known. A roller with a built-in motor has a motor and a speed reducer built into the roller body, and rotates the outer roller body by driving the internal motor. There are also roller with a built-in motor that do not have a speed reducer.

[0003] For some roller with a built-in motor, the drive unit such as the motor is unitized, and the unit is inserted into a separately prepared main body cylinder. Hereinafter, the motor unit for the roller with a built-in motor may be simply referred to as a motor unit. The motor unit is applicable to main body rollers of different lengths and has high versatility as a component. Also, by adopting the motor unit, the assembly of the roller with a built-in motor is easy. A motor unit with a circuit board built therein is disclosed in Patent Document 1. The motor unit has a structure similar to that of a guard motor.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Brake-equipped conveyor systems are known. In most cases, the brake is externally mounted to the motor-driven roller. While some motor-integrated rollers have brakes located within the roller body, in many cases, the motor unit is not used in this type of motor-integrated roller. A motor-integrated roller with a brake is difficult to assemble because it's hard to utilize the motor unit effectively.

[0006] The present invention aims to solve the above-mentioned problems and to provide a motor unit for a motor-integrated roller equipped with a braking function. Furthermore, the present invention aims to provide a geared motor equipped with a braking function. [Means for solving the problem]

[0007] An embodiment for solving the above-mentioned problems is a motor unit for a motor-integrated roller, which is inserted into a separately prepared roller body to constitute a motor-integrated roller, and comprises an outer cylinder, a motor, a brake member, and a circuit board, wherein the motor, the brake member, and the circuit board are housed inside the outer cylinder, the brake member is located between the motor and the circuit board inside the outer cylinder, and the circuit board, the motor, and the brake member are connected inside the outer cylinder.

[0008] The motor unit for a motor-integrated roller in this embodiment has a motor, a brake member, and a circuit board housed within an outer cylinder. In addition to the drive unit such as the motor and the circuit board, the motor unit for a motor-integrated roller in this embodiment also includes the brake member within the unit. Therefore, it is easy to use when manufacturing a motor-integrated roller with a brake, and the assembly of the motor-integrated roller with a brake is simplified. In the motor unit for a motor-integrated roller according to this embodiment, the brake member is located between the motor and the circuit board. Therefore, it is easy to configure a power transmission mechanism from the motor to the outside.

[0009] In the above-described embodiment, it is preferable that the motor has a rotor and a stator that surrounds the rotor, the stator being fixed to the outer cylinder, and an inner cylinder which is inserted into the outer cylinder, and the brake member and the circuit board being covered by the inner cylinder.

[0010] In the above-described embodiment, it is preferable that the motor has a rotor and a stator that surrounds the rotor, the stator is fixed to the outer cylinder, and has a pressing member, the pressing member is inserted into the outer cylinder, and the brake member and the circuit board are covered by the pressing member.

[0011] When adopting a configuration in which the motor, brake component, and circuit board are installed inside the outer cylinder, it is necessary to electrically connect the circuit board, the motor's stator, and the brake component. However, with the motor, brake components, and circuit board housed inside the outer casing, connecting them is difficult due to space limitations. Therefore, these components are connected externally before being inserted into the outer casing. In this case, the roller body of the motor-integrated roller is rotated by the motor inside the motor unit. On the other hand, the outer casing of the motor unit is fixed to the outside and does not rotate. A motor has a rotor and a stator. The rotor rotates, but the stator must not rotate. Therefore, in a motor unit, the stator must be mounted so as not to rotate relative to the outer cylinder. Therefore, in most cases, the motor stator is press-fitted into the outer casing. However, it is difficult to press-fit the stator while the motor, brake components, and circuit board are connected. In other words, the stator has enough rigidity to withstand the pressing force of the press-fit, but the brake component and the circuit board do not have such rigidity. Therefore, it is difficult to press-fit the stator by pressing the circuit board. This embodiment solves this problem. The motor unit for the motor-integrated roller in this embodiment has an inner cylinder and a pressing member, and the brake member and circuit board are covered by the inner cylinder and pressing member. According to this embodiment of the motor unit for a roller with an integrated motor, an external force can be applied to the inner cylinder and the pressing member, and the stator can be pressed into the roller body via the inner cylinder.

[0012] In the above-described embodiment, it is desirable that the inner cylinder is in direct or indirect contact with a part of the motor, and that when the inner cylinder is pressed in the axial direction, the motor moves integrally with the inner cylinder.

[0013] In the above-described embodiment, it is desirable that the pressing member is in direct or indirect contact with a part of the motor, and that when the pressing member is pressed in the axial direction, the motor moves integrally with the pressing member.

[0014] According to this embodiment, the stator can be easily pressed into the roller body by pressing it through the inner cylinder or pressing member.

[0015] In the above-described embodiment, it is desirable that the inner cylinder has an opening or notch, and that the brake member and the outer cylinder engage directly or through another member at the opening or notch.

[0016] In the above-described embodiment, it is desirable that the pressing member has an opening or notch, and that the brake member and the outer cylinder engage directly or through another member at the opening or notch.

[0017] Since the brake member needs to obtain a reaction force against rotation, a fixed and non-rotating part is required. As described above, since the outer cylinder is fixed to the outside and does not rotate, it is desirable to engage a part of the brake member with the outer cylinder. In the motor unit of this embodiment, there are openings or cutouts in the inner cylinder and the pressing member, and at the opening or cutout part, the brake member and the outer cylinder are engaged directly or through another member. Therefore, the brake member can obtain a reaction force against rotation.

[0018] In the above-described aspect, it is desirable that the brake member has a groove on its side surface, and a wiring connecting the motor and the circuit board is accommodated in the groove.

[0019] According to this aspect, when the device is put into the inner cylinder, the wiring is not easily damaged.

[0020] An aspect of the roller with a built-in motor is a roller with a built-in motor, characterized in that a motor unit for a roller with a built-in motor described in any of the above is inserted into the roller body.

[0021] The roller with a built-in motor of this aspect has high compatibility of parts and is easy to assemble.

[0022] An aspect of the manufacturing method of the motor unit for a roller with a built-in motor is a manufacturing method of a motor unit for a roller with a built-in motor that is inserted into a separately prepared roller body to form a roller with a built-in motor. The motor unit for a roller with a built-in motor has an outer cylinder, a motor, a brake member, and a circuit board. The outer cylinder has the motor, the brake member, and the circuit board inside. The circuit board, the motor, and the brake member are connected outside the outer cylinder. An inner cylinder is used, the circuit board and the brake member are inserted into the inner cylinder, and in a state where a part of the inner cylinder is in contact with a part of the motor, a press-fitting process of pressing the inner cylinder to press-fit the motor into the outer cylinder is included.

[0023] Another embodiment of the method for manufacturing a motor unit for a motor-integrated roller is a method for manufacturing a motor unit for a motor-integrated roller that is inserted into a separately prepared roller body to constitute a motor-integrated roller, wherein the motor unit for the motor-integrated roller comprises an outer cylinder, a motor, a brake member, and a circuit board, the motor, the brake member, and the circuit board are located inside the outer cylinder, and the method is characterized by a press-fitting step in which the circuit board, the motor, and the brake member are connected outside the outer cylinder, a pressing member is used to surround the circuit board and the brake member with the pressing member, and with a part of the pressing member in contact with a part of the motor, the pressing member is pressed to press-fit the motor into the outer cylinder.

[0024] Another embodiment for solving the aforementioned problems is a geared motor comprising an outer cylinder, a motor, a reduction gear, a brake member, and a circuit board, wherein the motor, the reduction gear, the brake member, and the circuit board are housed within the outer cylinder, the brake member is positioned between the motor and the circuit board within the outer cylinder, and the circuit board, the motor, and the brake member are connected within the outer cylinder, wherein the motor comprises a rotor and a stator covering the rotor, the stator is fixed to the outer cylinder, and has a pressing member, the pressing member is inserted into the outer cylinder, the brake member and the circuit board are covered by the pressing member, the pressing member is in direct or indirect contact with a part of the motor, and when the pressing member is pressed in the axial direction, the motor moves integrally with the pressing member.

[0025] Another embodiment for solving the aforementioned problems is a method for manufacturing a geared motor, wherein the geared motor comprises an outer cylinder, a motor, a reduction gear, a brake member, and a circuit board, and the motor, the reduction gear, the brake member, the circuit board, and a pressing member are located inside the outer cylinder, and the method for manufacturing a geared motor is characterized by a press-fitting step in which the circuit board, the motor, and the brake member are connected outside the outer cylinder, the pressing member is used to surround the circuit board and the brake member, and a part of the pressing member is in contact with a part of the motor, and the pressing member is pressed to press the motor into the outer cylinder. [Effects of the Invention]

[0026] The motor unit for a motor-integrated roller of the present invention has a braking member, and offers high parts interchangeability when manufacturing a motor-integrated roller equipped with a braking function. The geared motor of the present invention has a braking member and has a wide range of applications. [Brief explanation of the drawing]

[0027] [Figure 1] This is a front view of a motor-integrated roller according to an embodiment of the present invention. [Figure 2] Figure 1 is a cross-sectional view of a motor-integrated roller. [Figure 3] Figure 1 is an exploded perspective view of the motor-integrated roller. [Figure 4] (a) is a cross-sectional view of the motor unit (geared motor) for the motor-integrated roller built into the motor-integrated roller in Figure 1, and (b) is an enlarged view of the area within the circle. [Figure 5] Figure 4 is an exploded perspective view of the motor unit (geared motor) for the motor-integrated roller. [Figure 6] Figure 4 is an exploded perspective view of the inner cylinder section of the motor unit (geared motor) for the motor-integrated roller. [Figure 7] (a) through (f) are explanatory diagrams showing the manufacturing process of the motor unit (geared motor) for the motor-integrated roller shown in Figure 4. [Figure 8] (a) and (b) are perspective views showing modified examples of the pressing member. [Figure 9] This is an exploded perspective view of a motor unit (geared motor) for a motor-integrated roller according to another embodiment of the present invention. [Modes for carrying out the invention]

[0028] Embodiments of the present invention will be described below. First, the structure of the motor-integrated roller 1 will be briefly described. As shown in Figures 1 and 2, the motor-integrated roller 1 has a cylindrical, hollow roller body 2 and cover members 5 and 6, with a power transmission member 7 and a motor unit (motor unit for motor-integrated roller) 10 built inside.

[0029] The roller body 2 is a cylinder with open ends. Cover members 5 and 6 are attached to close both ends of the roller body 2. One of the lid members 5 (left side in Figure 2) is an integrated unit of a cylindrical roller body fitting member 11, a bearing 8, and a body-side shaft member 15, as shown in Figure 2. The other lid member 6 (right side in Figure 2) is an integrated unit of a roller body fitting member 16 and a bearing 17.

[0030] As shown in Figures 4 and 5, the motor unit (motor unit for roller with built-in motor) 10 has a cylindrical outer cylinder 20, and a motor 12, a reduction gear 13, and an inner cylinder 25 are built into the outer cylinder 20. Furthermore, the inner cylinder portion 25 has a brake member 27 and a circuit board 18 built inside the inner cylinder (pressing member) 26.

[0031] The motor 12 has a rotor 53 and a stator 51. The rotor 53 is located in the center, and the stator 51 surrounds it. Motor 12 is a Hall sensorless motor. A Hall sensorless motor, also called a DC Hall sensorless motor or brushless Hall sensorless motor, is a motor that detects the rotor position without using a Hall sensor. In a Hall sensorless motor, the rotation of the rotor is controlled without detecting the rotational position (angle) of the rotor. The reduction gear 13 has a planetary gear train. The output shaft of the reduction gear 13 is the drive shaft 31.

[0032] The brake component 27 is an electromagnetic brake. The brake component 27 consists of a main body 42 and a brake holder 40. The main body 42 houses a brake disc (not shown) attached to the rotating shaft 28 of the motor 12, a brake pad 35, a brake electromagnet 36, and a compression spring 37. The brake pad 35 is constantly pressed against the brake disc by the compression spring 37. The brake electromagnet 36 is located near the brake pad 35 and, when energized, attracts the brake pad 35, pulling it away from the brake disc. In this way, the brake component 27 constantly fixes the rotating shaft 28 of the motor in a non-rotatable state, and the rotating shaft 28 is released by energizing the brake electromagnet 36. The brake holder 40 is a component that covers the outside of the main body 42 and is integrally fixed to the main body 42 in the rotational direction.

[0033] The circuit board 18 is for controlling the operation of the motor 12 and the brake member 27, and includes an input circuit, a microcontroller, a motor drive circuit, and a brake control circuit (none of which are shown). It also has a communication function for communicating with the outside world.

[0034] The outer cylinder 20 is provided with a fixed shaft 30 that protrudes outward from one end in the axial direction and a drive shaft 31 that protrudes outward from the other end in the axial direction. The fixed shaft 30 is integrally attached to the outer cylinder 20, and the two do not rotate relative to each other.

[0035] The fixed shaft 30 is a shaft that is inserted into the bearing 17 of the other cover member 6 when the motor unit 10 is placed inside the roller body 2, and functions as one of the body-side shaft members of the roller body 2. The fixed shaft 30 is hollow, and signal wires and power wires are inserted inside it. These wires are connected to the circuit board 18. The drive shaft 31 (output shaft of the reduction gear 13) is the shaft connected to the power transmission member 7 when the motor unit 10 is placed inside the roller body 2, and is the rotating shaft that outputs the power of the motor 12 to the roller body 2. The drive shaft 31 is rotatably supported on the outer cylinder 20 via a bearing 41.

[0036] The motor-integrated roller 1 has a motor 12, a reduction gear 13, a brake member 27, and a circuit board 18 built into its roller body 2. Furthermore, the motor-integrated roller 1 has a main body-side shaft member 15 protruding from one end. Also, the fixed-side shaft 30 of the motor unit 10 protrudes from the other end of the motor-integrated roller 1. The motor-integrated roller 1 is supported by the main body side shaft members 15 protruding from both ends of a conveyor frame (not shown) and the fixed side shaft 30 of the motor unit 10 being fixed to it. The roller body 2 has a bearing 8 between it and the body-side shaft member 15, and a bearing 17 between it and the fixed-side shaft 30 of the motor unit 10, so it can rotate relative to a conveyor frame (not shown). In contrast, the motor unit 10 has its fixed shaft 30 fixed to the conveyor frame, and the fixed shaft 30 is integrally attached to the outer cylinder 20, so it cannot rotate relative to the conveyor frame.

[0037] The motor-integrated roller 1 is powered externally via wiring inserted through the fixed shaft 30. The motor 12 is powered by the circuit board 18. When the motor 12 rotates within the motor unit 10, its rotational force is reduced by the reduction gear 13 and output from the drive shaft 31. The drive shaft 31 is engaged with the power transmission member 7, and the rotational force is transmitted to the roller body 2 via the power transmission member 7. Furthermore, by driving the brake member 27, the roller body 2 is forcibly stopped.

[0038] Next, we will describe the characteristic configuration of the motor-integrated roller 1. In this embodiment, the motor-integrated roller 1 has not only a motor 12 and a reduction gear 13, but also a brake member 27 and a circuit board 18 built into the roller body 2. The motor 12 used in this embodiment has a rotor 53 in the center, surrounded by a stator 51. The motor 12 used in this embodiment has rotating shafts 23 and 28 protruding from both ends, with one rotating shaft 23 connected to a reduction gear 13 and the other rotating shaft 28 connected to a brake member 27. Therefore, the layout inside the outer cylinder 20 of the motor unit 10 is such that the reduction gear 13, brake member 27, and circuit board 18 are arranged in that order from the drive shaft 31 side. In this embodiment, by placing the brake member 27 between the motor 12 and the circuit board 18, the reduction gear 13 can be positioned in front of the motor 12, resulting in a configuration that has a braking function and allows for a linear arrangement of the power transmission path.

[0039] Next, we will describe the characteristic configuration of the motor unit 10. As described above, the motor unit 10 of this embodiment has a cylindrical outer cylinder 20, and the motor 12, reduction gear 13, and inner cylinder 25 are housed inside the outer cylinder 20. The inner cylinder 25 has a brake member 27 and a circuit board 18 housed inside the inner cylinder (pressing member) 26. In other words, the motor unit 10 has a double structure in which the inner cylinder 26 is arranged inside the outer cylinder 20. The internal gear 50, which forms the outer casing of the planetary gear train of the reduction gear 13, and the stator 51 of the motor 12 are integrally fixed to the inner surface of the outer cylinder 20.

[0040] The brake member 27 and the circuit board 18 are located inside the inner cylinder 26 (pressing member). In this embodiment, the brake member 27 and the circuit board 18 are entirely inserted into the inner cylinder 26, and the brake member 27 and the circuit board 18 are entirely surrounded and covered by the inner cylinder (pressing member) 26. The inner cylinder 26 is a cylinder with both ends open. Three notches 52 are provided at one end of the inner cylinder 26, as shown in Figures 4 and 5. The notches 52 extend axially, with the end of the inner cylinder 26 being the open end. The notch 52 extends to the area where the brake component 27 is housed.

[0041] As shown in Figure 6, the brake member 27 has a groove 55 extending axially on its outer casing. The groove 55 extends linearly across both the brake holder 40 and the main body 42. The circuit board 18 is held in a board holder 56. The board holder 56 is composed of two holder pieces 60 and 61. Both holder pieces 60 and 61 have semicircular inner cylinder inscribed portions 63 and 65 and planar board holding portions 66 and 67. The circuit board 18 is a rectangular plate and is sandwiched between the board holding portions 66 and 67 of two holder pieces 60 and 61.

[0042] The inner cylinder 26 is positioned inside the outer cylinder 20 with the brake member 27 and the circuit board 18 inserted inside. In this embodiment, as shown in Figure 4, the outer cylinder 20 is crimped in a portion corresponding to the notch 52 of the inner cylinder 26, and the concave portion 68 of the outer cylinder 20 engages with the brake holder 40 of the brake member 27. Therefore, the brake component 27 is integrally fixed to the outer cylinder 20.

[0043] Furthermore, the motor 12 and the circuit board 18 are connected by wiring 57 inside the outer cylinder 20. The wiring 57 connecting the motor 12 and the circuit board 18 is housed in the groove 55 of the brake member 27, as shown in Figure 6. Furthermore, within the outer cylinder 20, the brake member 27 and the circuit board 18 are also connected by wiring 58.

[0044] Next, the manufacturing method of the motor unit 10 will be described. As shown in Figure 7(a), the motor unit 10 first has the bearing 41 and the reduction gear 13 attached to the outer cylinder 20. On the other hand, as shown in Figure 7(a), the motor 12 and the circuit board 18 are connected by wiring 57 outside the outer cylinder 20. Furthermore, the signal lines and power lines between the brake member 27 and the circuit board 18 are connected by wiring 58. In this embodiment, since there is a brake member 27 between the motor 12 and the circuit board 18, the wiring 57 between the motor 12 and the circuit board 18 needs to cross over the brake member 27. In this embodiment, the brake holder 40 of the brake member 27 has a groove 55 that extends in the axial direction, and the wiring 57 between the motor 12 and the circuit board 18 is housed in the groove 55 of the brake member 27.

[0045] Next, as shown in Figure 7(b), the brake member 27 and the circuit board 18 are inserted into the inner cylinder 26. The brake member 27 is positioned in the notch 52 of the inner cylinder 26. The motor 12 is located outside the inner cylinder 26. Then, as shown in Figure 7(c), the motor 12 is pressed against the end of the outer cylinder 20. Next, the press device 100 pushes the inner cylinder 26 toward the outer cylinder 20. As a result, as shown in Figure 7(d), the motor 12 receives a pressing force through the inner cylinder 26 and is press-fitted into the outer cylinder 20. More specifically, the end of the inner cylinder 26 comes into contact with the stator 53 of the motor 12, pushing the inner cylinder 26 toward the outer cylinder 20, thereby press-fitting the motor 12 into the outer cylinder 20. It is also possible that something may be interposed between the inner cylinder 26 and the motor 12.

[0046] In other words, the inner cylinder 26 is in direct or indirect contact with a part of the motor 12, and by pressing the inner cylinder 26 in the axial direction, the motor 12 moves integrally with the inner cylinder 26 and is pressed into the outer cylinder 20. It is also possible that something may be interposed between the inner cylinder 26 and the motor 12. The press device 100 further pushes the inner cylinder 26, inserting the brake member 27 and the circuit board 18 into the outer cylinder 20 together with the inner cylinder 26 (press-fitting process). As a result, as shown in Figure 7(d), the rotating shaft 23 of the motor 12 engages with the reduction gear 13 inside the outer cylinder 20. The brake member 27 is also positioned in a predetermined location inside the outer cylinder 20. The stator 51 of the motor 12 is press-fitted into the outer cylinder 20 and fixed integrally.

[0047] Next, as shown in Figure 7(e), the outer cylinder 20 is struck from the outside to the portion of the inner cylinder 26 corresponding to the notch 52, causing it to dent and crimp. As a result, as shown in Figure 4(b), the dented portion 68 of the outer cylinder 20 extends beyond the notch 52 of the inner cylinder 26 to the brake member 27 and engages with a part of the brake member 27. As a result, the brake member 27 is integrally connected to the outer cylinder 20. In this embodiment, the inner cylinder 26 is provided with three notches 52, and there are recessed portions 68 at positions corresponding to each notch 52. However, the number of notches 52 and the number of recessed portions 68 are arbitrary, and the two numbers may be different.

[0048] As described above, the motor unit 10 has its fixed shaft 30 fixed to the conveyor frame, and the fixed shaft 30 is integrally attached to the outer cylinder 20, so it cannot rotate relative to the conveyor frame. Therefore, the outer cylinder 20 cannot rotate relative to the conveyor frame.

[0049] The brake member 27 needs a fixed, non-rotating portion in order to obtain a reaction force against rotation. In this embodiment, however, since the brake member 27 is integrally coupled to the non-rotating outer cylinder 20, a reaction force against rotation can be obtained.

[0050] In the embodiments described above, a notch 52 is provided in the inner cylinder 26, but an opening may be provided instead of a notch. In the embodiments described above, a Hall sensorless motor was used, but the structure of the motor 12 is not limited; it may be a brushless motor with a Hall sensor, or a brushed motor. It may also be an AC motor.

[0051] When manufacturing the motor-integrated roller 1, a separate cylinder is prepared to serve as the roller body 2, and the power transmission member 7 is fixed inside this cylinder. Furthermore, the motor unit 10 is inserted into the roller body 2, and the drive-side shaft 31 of the motor unit 10 is engaged with the power transmission member 7.

[0052] In the embodiment described above, the brake member 27 and the circuit board 18 are entirely inserted into the inner cylinder 26, and the brake member 27 and the circuit board 18 are entirely covered by the inner cylinder 26. However, parts of the brake member 27 and the circuit board 18 may be covered by the inner cylinder 26, while parts are exposed to the outside. Furthermore, a portion of the motor 12 may be covered by the inner cylinder 26.

[0053] In the embodiments described above, the outer cylinder 20 was crimped to directly engage a part of the brake member 27 with the recess of the outer cylinder 20. However, the brake member 27 and the outer cylinder 20 may also be connected by passing other members such as pins or rivets through the outer cylinder 20.

[0054] In the embodiment described above, the brake member 27 and the circuit board 18 are inserted into the inner cylinder 26, and the motor 12 is pressed into the outer cylinder 20 by pushing the inner cylinder 26 toward the outer cylinder 20 while the motor 12 is pressed against the end of the outer cylinder 20. The above-described embodiment uses the inner cylinder 26 as a pressing member. The pressing member (inner cylinder 26) in the above-described embodiment is cylindrical and surrounds the brake member 27 and the circuit board 18, almost completely enclosing and covering them. However, the shape of the pressing member is not limited to a cylindrical shape.

[0055] For example, it may be composed of half-shaped pressing member pieces 71a and 71b, such as the pressing member 70 shown in Figure 8(a). As shown in Figure 9, the pressing member 70 surrounds and covers the brake member 27 and the circuit board 18. In this embodiment, the gap between the pressing member pieces 71a and 71b is an opening 72, and the portion of the outer cylinder 20 corresponding to the opening 72 is crimped so that the concave portion 68 of the outer cylinder 20 engages with the brake holder 40 of the brake member 27.

[0056] Alternatively, a pin-shaped pressing member 73, as shown in Figure 8(b), can be used. The pressing member 73 consists of multiple pins 75 protruding from one side of an annular link 76. The pressing member 73 surrounds the brake member 27 and the circuit board 18. In this embodiment, the gap between the pins 75 is an opening 77, and the portion of the outer cylinder 20 corresponding to the opening 77 is crimped so that the concave portion 68 of the outer cylinder 20 engages with the brake holder 40 of the brake member 27. In the aforementioned press-fitting process, the tip of the pin 75 is brought into contact with a part of the motor 12, and the pressing member 73 is pressed in the axial direction, causing the motor 12 to move integrally with the inner cylinder 26 and be press-fitted into the outer cylinder 20.

[0057] The motor unit 10 described above was developed as a component of the motor-integrated roller 1, but it can also be used as a geared motor (80). As shown in Figure 4, the geared motor 80 has an outer cylinder 20, and the motor 12, reduction gear 13, and inner cylinder 25 are housed inside the outer cylinder 20. The inner cylinder 25 has an inner cylinder (pressing member) 26, and the brake member 27 and circuit board 18 are housed inside the inner cylinder 26. Inside the outer cylinder 20, the brake member 27 is positioned between the motor 12 and the circuit board 18, and the circuit board 18, motor 12, and brake member 27 are connected inside the outer cylinder 20. The motor 12 has a rotor 53 and a stator 51 that surrounds the rotor, with the stator 51 fixed to the outer cylinder 20. The inner cylinder (pressing member) 26 is inserted into the outer cylinder 20, and the brake member 27 and the circuit board 18 are covered by the inner cylinder 26. The inner cylinder (pressing member) 26 is in direct or indirect contact with a part of the motor 12, and when the inner cylinder (pressing member) 26 is pressed in the axial direction, the motor 12 moves integrally with the inner cylinder (pressing member) 26. [Explanation of symbols]

[0058] 1. Motor-integrated roller 2 Roller body 10. Motor Unit (Motor unit for roller with built-in motor) 12 motors 13 Reducer 18 Circuit boards 20 Outer cylinder 25 Inner cylinder 26 Inner cylinder (pressing member) 27 Brake components 40 Outer casing 51 Stator 52 Notches 53 Rotor 55 Groove 57 Wiring 68 Concave part 70, 73 Pressing members 72, 77 aperture 80 Geared Motor 100 Pressing device

Claims

1. A motor unit for a motor-integrated roller, which is inserted into a separately prepared roller body to constitute a motor-integrated roller, It has an outer cylinder, a motor, a brake member, and a circuit board. The motor, the brake member, and the circuit board are housed within the outer cylinder. Within the outer cylinder, the brake member is located between the motor and the circuit board. Inside the outer cylinder, the circuit board, the motor, and the brake member are connected. The roller body rotates due to the rotational force transmitted thereto from the drive shaft of the motor unit for the roller with a built-in motor, moreover, The motor has a rotor that generates the rotational force and a stator that surrounds the rotor, and the stator is fixed to the outer cylinder. A motor unit for a motor-integrated roller, characterized in that it has a pressing member, the pressing member is inserted into the outer cylinder, and the brake member and the circuit board are covered by the pressing member.

2. The motor unit for a motor-integrated roller according to claim 1, characterized in that the pressing member is in direct or indirect contact with a part of the motor, and when the pressing member is pressed in the axial direction, the motor moves integrally with the pressing member.

3. The motor unit for a motor-integrated roller according to claim 1 or 2, characterized in that the pressing member has an opening or notch, and the brake member and the outer cylinder are engaged directly or through another member at the opening or notch.

4. The motor unit for a motor-integrated roller according to any one of claims 1 to 3, characterized in that the pressing member is a cylinder.

5. The motor unit for a motor-integrated roller according to any one of claims 1 to 4, characterized in that the brake member has a groove on its side surface, and wiring connecting the motor and the circuit board is housed in the groove.

6. A motor-integrated roller characterized in that a motor unit for a motor-integrated roller according to any one of claims 1 to 5 is inserted into the roller body.

7. A method for manufacturing a motor unit for a motor-integrated roller, which is inserted into a separately prepared roller body to constitute a motor-integrated roller, The roller body rotates due to the rotational force transmitted to it by the drive shaft of the motor unit for the motor-integrated roller, The motor unit for the motor-integrated roller comprises an outer cylinder, a motor, a brake member, and a circuit board, with the motor, the brake member, and the circuit board located within the outer cylinder. The motor has a rotor that generates the rotational force and a stator that surrounds the rotor, and the stator is fixed to the outer cylinder. The circuit board, the motor, and the brake member are connected outside the outer cylinder. A method for manufacturing a motor unit for a motor-integrated roller, characterized by using a pressing member to surround the circuit board and the brake member with the pressing member, inserting the surrounding pressing member into the outer cylinder, and further pressing the pressing member while a part of the pressing member is in contact with a part of the motor to press-fit the motor into the outer cylinder.

8. A geared motor comprising an outer cylinder, a motor, a reduction gear, a brake member, and a circuit board, wherein the motor, the reduction gear, the brake member, and the circuit board are housed within the outer cylinder, the brake member is positioned between the motor and the circuit board within the outer cylinder, and the circuit board, the motor, and the brake member are connected within the outer cylinder. The motor has a rotor and a stator that surrounds the rotor, the stator is fixed to the outer cylinder, and the rotation of the rotor generates a rotational force on the drive shaft of the geared motor. It has a pressing member, the pressing member is inserted into the outer cylinder, and the brake member and the circuit board are covered by the pressing member. The geared motor is characterized in that the pressing member is in direct or indirect contact with a part of the motor, and when the pressing member is pressed in the axial direction, the motor moves integrally with the pressing member.

9. A method for manufacturing a geared motor, The geared motor has an outer cylinder, a motor, a reduction gear, a brake member, and a circuit board, and the motor, the reduction gear, the brake member, the circuit board, and a pressing member are located inside the outer cylinder. The motor has a rotor and a stator that surrounds the rotor, the stator is fixed to the outer cylinder, and the rotation of the rotor generates a rotational force on the drive shaft of the geared motor. The circuit board, the motor, and the brake member are connected outside the outer cylinder. A method for manufacturing a geared motor, characterized by using the pressing member, surrounding the circuit board and the brake member with the pressing member, inserting the surrounding pressing member into the outer cylinder, and further pressing the pressing member while a part of the pressing member is in contact with a part of the motor to press-fit the motor into the outer cylinder.

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