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Drive unit

A drive unit and control unit technology, applied in the direction of connection with control/drive circuits, electrical components, electric components, etc., can solve problems such as difficult replacement of controllers, difficulty in combining and separating motor controllers, and improve the efficiency of production work Effect

Inactive Publication Date: 2012-11-14
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this configuration of the drive unit, coupling and decoupling of the motor and its controller can be difficult
Therefore, it is difficult to replace the controller, for example when the controller is broken
Thus, in order to repair the electric power steering, it may be necessary to replace the drive unit as a whole

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach ）

[0031] refer to Figure 1 to Figure 5 , the drive unit 10 is configured to be used in an electric power steering device 1 in a vehicle ( image 3 ). The drive unit 10 engages with a gear 3 of a gearbox arranged on the column 2 . The drive unit 10 rotates the motor 30 based on various signals such as a vehicle speed signal received through a controller area network (CAN), a torque signal from a torque sensor 5 that detects a steering torque of the steering wheel 4, and the like. Generates assist force for steering operations.

[0032] Such as figure 1 and figure 2 shown, where figure 1 provided as drive unit 10 along the figure 2 In the section of the line I-I, the driving unit 10 includes the motor housing 20, the motor 30, the controller housing 40, the controller 100 and the terminal holder 81, and other components.

[0033] The motor case 20 has a cylindrical portion 21 and a bottom 22, and may be formed of metal. The cylindrical portion 21 is basically formed in ...

no. 2 approach ）

[0087] Figure 6 and Figure 7A The drive unit 10 in the second embodiment of the present disclosure is shown in / 7B. In the second embodiment, the shape of the terminal holder and the shapes of the first terminal and the second terminal are different from the first embodiment.

[0088] refer to Figure 6, in the second embodiment, the terminal holder 82 is formed substantially in a rectangular shape. The outer surface 821 of the terminal holder 82 is formed as a curved surface, and the inner surface 822 of the terminal holder 82 is formed as a flat surface. Two terminal holders 82 are attached to the motor case 20 with the outer face 821 facing the radially outer side of the motor case 20 and the inner face 822 facing the radially inner side of the motor case 20 . In other words, the outer face 821 faces away from the shaft 33 and the inner face 822 faces the shaft 33 . Furthermore, one terminal holder 82 is attached at the first opening 25 and one terminal holder 82 is ...

no. 3 approach ）

[0097] refer to Figure 8 to Figure 1 1 describes a drive unit in a third embodiment of the present disclosure. In the third embodiment, the shape of the terminal holder is different from that of the terminal in the second embodiment.

[0098] refer to Figure 8 , The terminal holder 823 of the third embodiment is formed substantially in a rectangular shape, and the first face 831 and the second face 832 are respectively formed in a curved planar shape. The two terminal holders 83 are respectively arranged on the first openings 25 , 26 such that the first face 831 faces the radially outward direction of the motor case 20 and the second face 832 faces the radially inward direction of the motor case 20 . In other words, the first face 831 faces away from the shaft 33 and the second face 832 faces the shaft 33 . In addition, each of the terminal holders 83 closes these openings 25 and 26 .

[0099] refer to Figure 9A to Figure 9C , in this embodiment, the second opening 25...

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PUM

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Abstract

The present invention relates to a drive unit. In the drive unit, a motor (30) includes a stator (31) having a winding wire (34) wound thereon, a rotor (32), and a shaft (33). The motor is housed in a motor case (20), wherein the motor case has a cylinder part (21) and a bottom part (22). A first terminal (301) is disposed on the motor case, and has one end (39) coupled to an end of the winding wire, such that the wire (34) passes through a first opening (25, 26) on the bottom part. A controller case (40) is disposed detachably on the bottom part. The controller case has a controller (100) housed therein, and has a second terminal (701) that has one end electrically coupled to a power module (53, 54) and the other end engages with the first terminal (301) to electrically couple the motor and the controller (100). A terminal holder (81) is attached on the motor case to hold and support the first terminal.

Description

technical field [0001] The present disclosure generally relates to a drive unit having an integral motor and a controller to control rotation of the motor. Background technique [0002] Conventionally, there is known an electric power steering apparatus that uses an integrated motor and a controller as a drive unit. The drive unit disclosed in Japanese Patent Document No. 3,538,944 (JP'944) has an integrated motor and its control unit, and the motor-side terminal and the controller-side terminal are connected by welding by means of conductive members (ie, flexible wires). In this configuration of the drive unit, coupling and decoupling of the motor and its controller can be difficult. Therefore, it is difficult to replace the controller, for example, when the controller is broken. Thus, in order to repair the electric power steering device, it may be necessary to replace the drive unit as a whole. Contents of the invention [0003] The present disclosure provides a driv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K11/00H02K5/04
CPCH02K11/0073H02K5/225H02K11/33
Inventor 安部达也今井博史
Owner DENSO CORP