TWM620862U - Motor unit with positioning structure and motor-driven device thereof - Google Patents

Abstract

A motor with positioning structure and a motor-driven device are disclosed. The motor-driven device includes a body and a motor, wherein the body has a first slot and the motor is disposed in the first slot. The motor includes a housing and a positioning structure, wherein the positioning structure is disposed on a first region of the housing around the curved outer surface of the housing and is composed of a plurality of microstructures.

Description

Motor with positioning structure and motor drive device

The present invention relates to a motor and a motor drive device with a positioning structure, in particular to a motor and a motor drive device that can be quickly fixed and positioned at the same time during assembly.

In response to driving safety, most vehicles today are equipped with an anti-lock braking system (Anti-lock Braking System), which has the ability to control the braking action of the wheels, and can adjust the actuation force when driving encounters an emergency or poor road conditions This is to avoid losing control of the vehicle due to a locked or slipping tire.

Generally, the anti-lock braking system can adjust the actuation force through a combination of software (such as arithmetic program), hardware (such as a controller) and a transmission mechanism to enhance the maneuverability of the vehicle under various conditions. The use of hydraulic devices as the transmission mechanism in anti-lock braking systems is the current mainstream. However, the hydraulic devices used in anti-lock braking systems usually have multiple components, which require multiple processes during assembly and are effective in sealing. High standards are required, so welding is the usual method of fitting and sealing.

However, although welding is easy to construct on the complex joint surfaces of components, it is not resistant to vibrations and high temperatures. Hydraulic devices equipped with motors and pumps will generate vibration and hot air during operation. After a long time, the components in the hydraulic device There is a concern that the seal will gradually weaken, especially when driving in a situation where it is tight. Sudden braking, the vibration and high temperature generated by the hydraulic device under high-speed operation may also directly cause the welding components to break and separate, rendering the anti-lock braking system useless.

As the main force for driving the hydraulic device, the motor requires a lot of load, especially stress and vibration during operation, so it needs to be tightly arranged in the hydraulic device. The conventional assembling and fixing method is mainly to fix the motor in the hydraulic device by screw locking or welding after the motor is placed in the base. However, the screw locking is time-consuming and laborious due to the need to align the screw holes, and the welding quality is difficult. Control has an impact on manufacturing costs and product quality.

Therefore, in order to overcome the shortcomings of the conventional technology, the motor with positioning structure and the motor drive device of the present invention are provided with a positioning structure on the motor in the motor drive device, so that it can be easily integrated with the motor drive device. The body is combined, and the motor is sealed in the body by press-fitting. In this way, the use of welding to assemble the motor of the sealed motor drive device can be avoided, and the assembly time can be reduced. Furthermore, the positioning structure of the motor enables the combined area to have a higher coefficient of friction, which can be used to position the motor and limit the direction and rotational displacement of the motor at the same time to prevent the rotation or displacement of the motor during operation, thereby preventing the motor from rotating or moving. Other components cause impact.

Based on at least one of the foregoing objectives, an embodiment of the present invention provides a motor with a positioning structure, wherein the motor includes a motor assembly, a housing with an arc-shaped outer surface, and a positioning structure provided on the arc-shaped outer surface of the housing. The motor assembly is arranged in the housing. The arc-shaped outer surface is divided into a first area and a second area. The positioning structure is located in the first area and surrounds the arc-shaped outer surface, wherein the positioning structure is composed of a micro three-dimensional structure.

Optionally, the first area has a higher coefficient of friction than the second area.

Optionally, the first area is a rough surface and the second area is a smooth surface.

Optionally, the first area is a long area surrounding the arc-shaped outer surface, and the micro three-dimensional structure forms an irregular pattern on the first area and forms a positioning structure.

Optionally, the first area is a long area surrounding the arc-shaped outer surface, and the micro three-dimensional structure forms a regular pattern on the first area and forms a positioning structure.

Optionally, the area of the first area is smaller than the area of the second area and the first area is adjacent to the bottom of the housing.

Optionally, the positioning structure is integrally formed with the housing.

Optionally, the positioning structure is formed on the arc-shaped outer surface of the housing in a machining manner.

Optionally, a plurality of micro three-dimensional structures present specific characters or patterns.

Based on at least one of the foregoing objectives, an embodiment of the present invention provides a motor drive device with a positioning structure, which includes a body with a first arrangement groove and the motor as described above, wherein the motor is fixed in the first arrangement groove.

Optionally, the motor driving device further includes an actuating element fixed to the body and drivingly connected to the motor.

Optionally, the hardness of the body is less than the hardness of the outer shell of the motor.

Optionally, the arc-shaped outer surface of the housing of the motor closely fits the inner wall of the first setting groove of the main body.

Optionally, the motor driving device is an anti-lock braking device, and the actuating element is an oil return pump.

In short, the motor with positioning structure and the motor drive device provided by the embodiments of the present invention utilize the positioning structure of the motor itself to simplify the combination relationship with the body of the motor drive device, thereby reducing Reduce assembly procedures and avoid the use of welding for sealing. In this way, various markets (such as vehicle manufacturers, locomotive manufacturers, ABS manufacturers, etc.) that have demand for motor drive devices, such as anti-lock braking devices, have advantages.

In order to make the above and other objectives, features and advantages of the present invention more obvious and understandable, detailed descriptions are made as follows in conjunction with the accompanying drawings.

1: Motor drive device

10: body

11: The first setting slot

13: Second setting slot

17: The third setting slot

20: Motor

21: Shell

22: Positioning structure

23: shaft

25: Motor assembly

40: Actuating element

80: Rotating element

90: Bearing

100: Electronic control unit

110: upper cover

120: control panel

130: unit body

211: The first area

212: The second area

1011: upper surface

1012: first side

E: Electronic components

M: Mechanism component

Fig. 1 is a schematic diagram of a motor drive device according to an embodiment of the present invention.

Fig. 2 is another schematic diagram of the motor driving device according to the embodiment of the present invention.

Fig. 3 is an exploded view of the motor drive device of the embodiment of the present invention.

Fig. 4 is a cross-sectional view of the motor drive device of the embodiment of the present invention.

Fig. 5 is a schematic diagram of a motor according to an embodiment of the present invention.

Fig. 6 is a cross-sectional view of the motor of the embodiment of the present invention.

7A~D are schematic diagrams of the positioning structure of the embodiment of the present invention.

In order to fully understand the purpose, features and effects of the present invention, a detailed description of the present invention will be given with the following specific embodiments and accompanying drawings. The description is as follows.

The embodiment of the present invention provides a motor driving device, which includes a body, a motor, and an actuating element. The main body has a plurality of communicating grooves for respectively arranging the motor and the actuating element, wherein the motor has a positioning structure which can be combined with the installing groove in the body, and the actuating element is drivingly connected with the motor through the communicating groove. Since both the motor and the actuating element have a combined structure that matches with the groove of the body, After the assembly, the combination of the components and the body of the motor drive device is more stable, and the assembly process can also be simplified.

First, please refer to FIG. 1. FIG. 1 is a schematic diagram of a motor driving device according to an embodiment of the present invention. As shown in the figure, the motor drive device 1 of the embodiment of the present invention (for example, but not limited to, the anti-lock braking device) is roughly composed of an electronic component E and a mechanical component M. The overall appearance is approximately a hexahedron, in which the electronic component The length of E is slightly longer than that of the mechanism member M, so the upper half of the motor drive device 1 protrudes from the lower half (or the lower half is notched) on a side surface. 2 is a schematic diagram of the motor drive device of the embodiment of the present invention with the electronic component E removed. As shown in the figure, the mechanism member M includes a body 10, a motor 20, and an actuating element 40 (for example, but not limited to, an oil return pump).

Next, please refer to FIG. 3, which is an exploded view of the motor drive device according to the embodiment of the present invention. As shown in the figure, the electronic component E of the motor driving device 1 of the embodiment of the present invention can be an electronic control unit 100, wherein the electronic control unit 100 is electrically connected to the motor 20 to control the action of the motor 20. In one embodiment, the electronic control unit 100 is a microcontroller, and the motor 20 is a servo motor. However, the present invention does not limit the types of the electronic control unit 100 and the motor 20, nor does it limit the difference between the electronic control unit 100 and the motor 20. The connection relationship, as long as the actions can be controlled. The electronic control unit 100 includes an upper cover 110, a control board 120, and a unit body 130. The upper cover 110, the control board 120, and the unit body 130 are stacked and combined to form a slightly rectangular parallelepiped. The unit body 130 has a space for installation on the body 10. Then, the assembled motor 20 protruding from the main body 10 is covered and accommodated therein.

As shown in FIG. 3, the main body 10 is approximately a six-sided cuboid in appearance, and its upper surface 1011 has a first arrangement groove 11 for assembling the motor 20 therein. The first side surface 1012 of the main body 10 has a second disposing groove 13 for the actuating element 40 to be assembled therein, wherein the motor 20 has its axis perpendicular to the main body 10 The direction of the surface 1011 is arranged in the first setting groove 11, and the actuating element 40 is arranged in the second setting groove 13 with its axis parallel to the upper surface 1011 but perpendicular to the first side surface 1012. Therefore, the motor 20 The axis and the axis of the actuating element 40 are orthogonal to the direction line. This configuration can maximize the use of the space in the main body 10 while maintaining the functions of the individual components, and reduce the volume of the overall motor drive device.

Refer to FIG. 4 at the same time. FIG. 4 is a cross-sectional view of the motor driving device according to the embodiment of the present invention. As shown in the figure, the mechanism member M further includes a rotating element 80 and a bearing 90 assembled in the third setting groove 17 of the main body 10. The first setting groove 11 and the second setting groove 13 communicate through the third setting groove 17, that is, the third setting groove 17 is located between the first setting groove 11 and the second setting groove 13. The rotating element 80 is connected to the actuating element 40 arranged in the second arrangement groove 13 and the motor 20 arranged in the first arrangement groove 11, wherein the motor 20 drives the actuating element 40 to act by driving the rotating element 80. The bearing 90 is disposed between the rotating element 80 and the motor 20, and part of the bearing 90 is located in the first arrangement groove 11. In one embodiment, the rotating element 80 is an eccentric wheel, the bearing 90 is a ball bearing, and the bearing 90 is arranged in the third setting groove 17 in an interference configuration, and the bearing 90 is located on a part of the outer surface of the third setting groove 17 It closely fits the inner wall of the third setting groove 17, but the present invention does not limit the type and arrangement of the components according to this.

Please refer to FIG. 5 and FIG. 6, which are respectively a schematic diagram before and after assembly and a cross-sectional view after assembly of the motor of the embodiment of the present invention. The motor 20 is cylindrical and has a housing 21. The motor assembly 25 (including general motor circuits, stators and rotors, etc., the type of motor assembly is not used to limit the present invention) is arranged in the housing 21, and the outer surface of the housing 21 is divided into A region 211 and a second region 212. The first area 211 is provided with a positioning structure 22, wherein the positioning structure 22 is composed of a plurality of micro-three-dimensional structures and surrounds the outer surface of the housing 21. The positioning structure 22 surrounding the housing 21 uses the distribution of the micro three-dimensional structure to increase the friction system in the first region Count, when the motor 20 is engaged with the main body 10, the positioning structure 22 is fixed in the first installation groove 11, and the motor 20 is prevented from rotating and moving in the first installation groove 11 during operation.

Therefore, the friction coefficient of the first region 211 is higher than the friction coefficient of the second region 212, that is, relatively speaking, the first region 211 is a rough surface and the second region 212 is a smooth surface.

In one embodiment, the positioning structure 22 of the motor 20 uses a tool to form a micro three-dimensional structure, such as engraving, etching, brushing, etc., on the first area 211 on the outer surface of the housing 21 in a direct processing manner, thereby positioning the structure 22 has the same material as the housing 21 of the motor 20, but the present invention does not limit the material and the forming method of the positioning structure 22 according to this. The micro three-dimensional structure can be designed for fixing purposes, so it can present specific text or patterns as a commendation for the source of the product or the model of the motor. In other embodiments, the positioning structure 22 may be sandblasting or film sticking to attach the micro three-dimensional structure to the outer surface of the housing 21, and the sandblasting material or film material may be the same or different from the housing material.

In detail, the housing 21 of the motor 20 has an arc-shaped outer surface, the first area 211 is a long area surrounding the housing 21, and the plurality of micro three-dimensional structures of the positioning structure 22 cover the entire first area 211. In this embodiment, the first area 211 is adjacent to the bottom of the housing 21 so as to be combined with the first setting groove 11 of the main body 10, and only occupies a small part of the outer surface of the housing 21, and its area is smaller than the area of the second area 212. The positioning structure 22 is composed of a plurality of micro-three-dimensional structures in a continuous or discontinuous arrangement, which can present a pattern of their arrangement when viewed from above, and the pattern can be regular or irregular, as shown in FIGS. 7A to 7D. The pattern of FIG. 7A is a regular continuous mesh pattern with acute angles. The pattern in Fig. 7B is a regular discontinuous wave pattern without acute angles. Fig. 7C is an irregular discontinuous bump pattern, and Fig. 7D is an irregular continuous wrinkle pattern. However, the present invention does not limit the shape and type of the positioning structure 22 according to this, but it is preferably a non-directional diagram case. The plurality of micro three-dimensional structures of the positioning structure 22 may be uniformly covered or distributed in the first area 211 or unevenly distributed in the first area 211.

In addition, the first installation groove 11 of the main body 10 also has an arc-shaped inner wall for accommodating the motor 20, and the circumference or diameter of the inner wall of the first installation groove 11 is approximately equal to the circumference or diameter of the outer surface of the housing 21 of the motor 20. In this way, the outer surface of the housing 21 of the motor 20 can closely fit the inner wall of the first setting groove 11 of the body 10, and the high friction coefficient of the positioning structure 22 located in the first area 211 makes the outer surface of the housing 21 of the motor 20 not Will move relative to the inner wall of the first set groove 11. In this embodiment, the main body 10 only accommodates the lower part of the motor 20 to position the motor 20, but the present invention does not limit the accommodating space of the main body according to this.

Therefore, when assembling the motor 20 to the main body 10, it is only necessary to insert the motor 20 into the first slot 11, and then press-fit the motor 20 and the main body 10. It is preferable to use interference assembly or interference assembly to fix the motor. 20 is in the first setting groove 11. In one embodiment, the body 10 is an aluminum cavity and has a hardness less than that of the housing 21 of the motor 20. However, this embodiment does not limit the hardness and materials of the body 10 and the housing 21 accordingly.

As shown in FIG. 6, the third setting groove 17 is located below the first setting groove 11 and its diameter is also smaller than that of the first setting groove 11, and the rotating shaft 23 of the motor 20 penetrates the rotating element 80 and the bearing 90 located in the third setting groove 17 The rotating element 80 is actuated. As mentioned above, part of the bearing 90 is located in the third setting groove 17, and part of the bearing 90 is located in the first setting groove 11. The bearing 90 in the portion of the first setting groove 11 is substantially in contact with the lower surface of the motor 20 and It is contained in the housing 21 of the motor 20. In detail, the outer surface of the bearing 90 can be divided into an upper half and a lower half. The upper half is closely attached to the inner wall of the housing 21 of the motor 20, and the lower half is closely attached to the inner wall of the third groove 17 Fits tightly. The arrangement of the bearing 90 can disperse the load imposed on the rotating element 80 and the motor 20 during the operation of the motor drive device 1. In addition, the overall arrangement of the motor 20 and the main body 10 can also increase the heat dissipation effect.

Next, the assembly process of the motor drive device according to the embodiment of the present invention will be explained. First, the bearing and the rotating element are assembled in the third setting groove in the body provided with a plurality of communicating grooves. The bearing and the rotating element are arranged in the third setting groove in a coaxially laminated manner, and the bearing is located in the third setting groove of the rotating element. Above. Since the third arrangement groove is located below the first arrangement groove and communicates with the first arrangement groove and the second arrangement groove, and the bearing and the rotating element interact with the motor in structure and transmission function, therefore, in one embodiment, the bearing and the rotating The components are assembled on the motor first, and then placed in the setting groove of the body together with the motor, but the present invention is not limited to this.

Then, the motor is inserted into the first installation groove on the upper surface of the main body and press-fitted, so that the motor is fixed in the first installation groove of the main body by the positioning structure on the outer surface of the housing. Since the contour of the first setting groove is similar to the shape of the motor, the outer shell of the motor can closely fit the inner wall of the first setting groove.

Then, the actuating element is assembled in the second setting groove on the first side surface of the main body, wherein the second setting groove is communicated with the first setting groove, so the actuating element can be connected to the motor by transmission, and the transmission connection is the motor through and the actuation The component configuration between the components, such as but not limited to the bearing and the rotating component, drives the rotating component and indirectly drives the actuating component to act during operation.

Finally, the electronic control unit is assembled on the upper surface of the main body, covering the part of the motor protruding from the upper surface of the main body. In this way, the assembly of the motor drive device is completed.

In summary, compared with the prior art, the technical effects of the motor with positioning structure and the motor drive device described in the embodiment of the present invention are described as follows.

In the past known technology, multiple components of the motor drive device are fixed and sealed by welding or screw locking, but the quality of welding will directly affect the sealing of the components, and the welded joints are neither shock-resistant nor resistant. High temperature resistance makes safety concerns when operating the motor drive device, and screw locking will increase manufacturing time and cost. In contrast to the motor drive device described in the embodiment of the present invention, The structure of the components is used to simplify the combination relationship, and the required positioning and fixing can be achieved by press-fitting technology without welding or screw locking, ensuring that the components will not be damaged or broken due to vibration and high temperature caused by high-speed operation. The process of assembling to the main body can also be reduced, thereby increasing the efficiency of assembly.

The present invention has been disclosed in preferred embodiments above. However, those familiar with the art should understand that the above-mentioned embodiments are only used to describe the present invention and should not be interpreted as limiting the scope of the present invention. It should be noted that all changes and substitutions equivalent to the foregoing embodiments should be included in the scope of the present invention. Therefore, the scope of protection of this new model shall be subject to the scope of the patent application.

10: body

11: The first setting slot

17: The third setting slot

20: Motor

21: Shell

22: Positioning structure

40: Actuating element

80: Rotating element

90: Bearing

211: The first area

212: The second area

1011: upper surface

Claims (14)

A motor with a positioning structure includes: a housing with an arc-shaped outer surface, wherein the arc-shaped outer surface is divided into a first area and a second area; a motor assembly arranged in the housing; and a positioning in the first area The structure is arranged around the arc-shaped outer surface, and the positioning structure is composed of a plurality of micro-stereostructures. The motor according to claim 1, wherein the first area has a higher friction coefficient than the second area. The motor according to claim 2, wherein the first area is a rough surface and the second area is a smooth surface. The motor according to claim 1, wherein the first area is a long area surrounding the arc-shaped outer surface, and the plurality of micro three-dimensional structures form an irregular pattern on the first area and form the positioning structure. The motor according to claim 1, wherein the first area is a long area surrounding the arc-shaped outer surface, and the plurality of micro three-dimensional structures form a regular pattern on the first area and form the positioning structure. The motor according to claim 4 or 5, wherein the area of the first area is smaller than the area of the second area, and the first area is adjacent to the bottom of the housing. The motor according to claim 1, wherein the positioning structure and the housing are integrally formed. The motor according to claim 1, wherein the positioning structure is formed on the first area of the arc-shaped outer surface of the housing in a processing manner. The motor according to claim 1, wherein the plurality of micro three-dimensional structures present specific characters or patterns. A motor driving device with a positioning structure includes: a body with a first setting groove; and the motor according to any one of claims 1 to 5, fixed in the first setting groove. The motor drive device described in claim 10 further includes an actuating element fixed to the body and drivingly connected to the motor. The motor drive device according to claim 10, wherein the hardness of the body is less than the hardness of the housing of the motor. The motor drive device according to claim 10, wherein the arc-shaped outer surface of the housing of the motor closely fits the inner wall of the first arrangement groove of the body. The motor drive device according to claim 11, wherein the motor drive device is an anti-lock braking device, and the actuation element is an oil return pump.

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