CN-122000752-A - Electrical apparatus

CN122000752ACN 122000752 ACN122000752 ACN 122000752ACN-122000752-A

Abstract

The application provides an electrical device. The housing of the electrical device according to the present specification is divided into a first housing and a second housing, and a plurality of terminals are provided on one side and a plurality of connectors are provided on the other side, so that a structure is provided that can alleviate abrupt changes in resistance when the second housing is coupled to the first housing. The first housing has a first terminal, and the second housing has a first connector. One of the first housing and the second housing is provided with a second terminal, and the other is provided with a second connector. When the second housing is brought close to the first housing, the first terminal is inserted into the first connector, and the second terminal is inserted into the second connector. The length of the first terminal inserted into the first connector, i.e., the first stroke, is longer than the length of the second terminal inserted into the second connector, i.e., the second stroke.

Inventors

TANAKA MASAHIRO
ISHIURA KAZUAKI
IWAMOTO MASATAKA
YAMANAKA KENSHI

Assignees

丰田自动车株式会社

Dates

Publication Date: 20260508
Application Date: 20251024
Priority Date: 20241108

Claims (3)

1. An electrical device is provided with: a first housing having an opening; a second housing coupled to the first housing to close the opening; a first terminal provided in the first housing and extending in a direction toward the first housing along the second housing when the second housing is coupled to the first housing; a first connector provided in the second housing and coupled to the first terminal; a second terminal provided in one of the first and second housings and extending parallel to the first terminal, and A second connector provided on the other of the first housing and the second housing and coupled to the second terminal, The length of the first terminal inserted into the first connector, i.e., the first stroke, is longer than the length of the second terminal inserted into the second connector, i.e., the second stroke.
2. The electrical device of claim 1, wherein, The resistance when inserting the first terminal into the first connector is smaller than the resistance when inserting the second terminal into the second connector.
3. The electrical device according to claim 1 or 2, wherein, One of the first housing and the second housing accommodates a motor, the other of the first housing and the second housing accommodates an inverter for driving the motor and a controller for controlling the inverter, The first terminal and the first connector connect a sensor associated with the motor to the controller, The second terminal and the second connector connect the motor and the inverter.

Description

Electrical apparatus Technical Field The technology disclosed in this specification relates to electrical devices. Background Japanese patent application laid-open No. 2016-139539 and Japanese patent application laid-open No. 2016-139540 disclose electrical devices in which a motor and an inverter are housed in a single housing. The housing is divided into a first housing in which the motor is housed and a second housing in which the inverter is housed. The first housing is provided with terminals, and the second housing is provided with a connector. When the second housing is combined with the first housing, the terminals are fitted with the connector. Disclosure of Invention When the first housing includes a plurality of terminals, if the plurality of terminals are simultaneously brought into contact with the connectors, resistance when the second housing is combined with the first housing abruptly changes. The present specification provides a structure capable of alleviating abrupt changes in resistance when a second housing is coupled to a first housing. The electrical device disclosed in the present specification includes a first case having an opening, a second case coupled to the first case to close the opening, a first terminal provided to the first case and extending in a direction toward the first case along the second case when the second case is coupled to the first case, a first connector provided to the second case and coupled to the first terminal, a second terminal provided to one of the first case and the second case and extending parallel to the first terminal, and a second connector provided to the other of the first case and the second case and coupled to the second terminal. In the electrical apparatus disclosed in the present specification, the length of the first terminal inserted into the first connector, that is, the first stroke, is longer than the length of the second terminal inserted into the second connector, that is, the second stroke. When the second housing is brought close to the first housing, the first terminal having a longer stroke is preferentially brought into contact with the connector (first connector) than the second terminal. After the first terminal is contacted with the connector, the second terminal is contacted with the connector (second connector). Since the first terminal and the second terminal are in contact with the connector in turn, a variation in resistance when the second housing is combined with the first housing is alleviated. The details and further improvements of the technology disclosed in this specification are described by the following "detailed description". Drawings Fig. 1 is a sectional view of an electric device (motor unit) of the embodiment. Fig. 2 is a sectional view of the electric apparatus (motor unit) of the embodiment (separating the second housing from the first housing). Fig. 3 is a sectional view of the electric device (motor unit) of the embodiment (the positioning pin is in contact with the positioning hole). Fig. 4 is a cross-sectional view of the electrical apparatus (motor unit) of the embodiment (first terminal is in contact with the first connector). Fig. 5 is a sectional view of the electric device (motor unit) of the embodiment (the second terminal is in contact with the second connector). Fig. 6 is a sectional view of the electric device (motor unit) of the embodiment (separating the second terminal block from the motor). Detailed Description An electrical apparatus of an embodiment is described with reference to the drawings. The electric apparatus of the embodiment is a motor unit 10 in which an electric motor and an inverter are accommodated in one housing. Fig. 1 shows a section of a motor unit 10. In the motor unit 10, the motor 130, the inverter 230, and the controller 240 are housed in one housing. For convenience of explanation, the "motor 130" will be hereinafter referred to as "motor 130". In the drawing, the motor 130, the inverter 230, and the controller 240 are not shown. The case is divided into a first case 100 and a second case 200. The first housing 100 has an opening 101, and the second housing 200 is combined with the first housing 100 to block the opening 101. The second housing 200 is fixed to the first housing 100 by bolts 109. The motor 130 is accommodated in the first housing 100. A gear set, not shown, is also housed in the first housing 100. The motor unit 10 is a power unit mounted on an electric vehicle, and a main shaft of the motor 130 is engaged with an input gear of a gear train, and an output gear of the gear train is engaged with an axle. In the drawings, the illustration of the components related to the electric vehicle is also omitted. The inverter 230 and the controller 240 are accommodated in the second housing 200. The controller 240 decides a target output of the motor 130 using information of a sensor (described later), and controls the inverter 230 based on the target output.