Motor-driven compressor

Patent metadata

Field	Value
Publication number	US-11588371-B2
Application number	US-202016829497-A
Country	US
Kind code	B2
Filing date	Mar 25, 2020
Priority date	Mar 27, 2019
Publication date	Feb 21, 2023
Grant date	Feb 21, 2023

Abstract

Connectors are each integrated with a holder in a state in which bus bars are projected. A first projection and a second projection of the holder are respectively inserted in a first insertion hole and a second insertion hole in a circuit substrate. This determines positions of the holder and the circuit substrate relative to each other. The holder has coil lead wire insertion holes, capacitor lead wire insertion holes, and element lead wire insertion holes. These insertion holes extend in the same direction as the direction in which the bus bars project from the holder.

First claim

What is claimed is:

1. A motor-driven compressor comprising:
a compression portion that compresses fluid;
an electric motor that drives the compression portion;
a motor controller that has a circuit substrate for driving the electric motor;
a housing that has an inverter accommodating chamber for accommodating the motor controller;
a connector that has a connecting terminal and a bus bar, the bus bar being provided to electrically connect the connecting terminal to the circuit substrate;
a terminal pin that is fixed to the housing and removably inserted in the connecting terminal, thereby electrically connecting the connector and the electric motor to each other;
an electronic component that is electrically connected to the circuit substrate; and
a holder made of plastic that holds the electronic component, the circuit substrate being fixed to the holder, wherein
the connector is integrated with the holder in a state in which the bus bar is electrically connected to the circuit substrate,
the holder has a holder circumferential wall that surrounds the connector and is arranged at an outer side of an outer circumferential edge of the circuit substrate,
the holder has a substrate mounting surface on which the circuit substrate is mounted, and
the holder circumferential wall extends from the substrate mounting surface in a direction in which the terminal pin is inserted in the connecting terminal.

2. The motor-driven compressor according to claim 1 , wherein
the holder and the circuit substrate each include a positioning portion for positioning the holder and the circuit substrate relative to each other,
the positioning portion of the holder includes a plurality of positioning projections that are disposed in the holder, and
the positioning portion of the circuit substrate includes a plurality of positioning holes that are provided in the circuit substrate, wherein the positioning projections are inserted into the corresponding positioning holes.

3. The motor-driven compressor according to claim 2 , wherein the electronic component is one of multiple electronic components that include a filter element and a switching element.

4. The motor-driven compressor according to claim 1 , wherein
the holder circumferential wall extends from an outer circumferential section of the substrate mounting surface,
the holder and the circuit substrate each include a positioning portion for positioning the holder and the circuit substrate relative to each other,
the positioning portion of the circuit substrate includes the outer circumferential edge of the circuit substrate that extends along an inner circumferential surface of the holder circumferential wall, and
the positioning portion of the holder includes the inner circumferential surface of the holder circumferential wall that the outer circumferential edge of the circuit substrate is allowed to contact.

5. The motor-driven compressor according to claim 4 , wherein the electronic component is one of multiple electronic components that include a filter element and a switching element.

6. The motor-driven compressor according to claim 1 , wherein
the holder has a plurality of tubular boss portions, wherein screw members are inserted into the corresponding boss portions to attach the holder to the housing,
the holder and the circuit substrate each include a positioning portion for positioning the holder and the circuit substrate relative to each other,
the positioning portion of the circuit substrate includes extending edges of the circuit substrate each of which extends along an outer circumferential surface of the corresponding one of the boss portions, and
the positioning portion of the holder includes the outer circumferential surfaces of the boss portions that the corresponding extending edges are allowed to contact.

7. The motor-driven compressor according to claim 6 , wherein the electronic component is one of multiple electronic components that include a filter element and a switching element.

8. The motor-driven compressor according to claim 1 , wherein the electronic component is one of multiple electronic components that include a filter element and a switching element.

9. A motor-driven compressor comprising:
a compression portion that compresses fluid;
an electric motor that drives the compression portion;
a motor controller that has a circuit substrate for driving the electric motor;
a housing that has an inverter accommodating chamber for accommodating the motor controller;
a connector that has a connecting terminal and a bus bar, the bus bar being provided to electrically connect the connecting terminal to the circuit substrate;
a terminal pin that is fixed to the housing and removably inserted in the connecting terminal, thereby electrically connecting the connector and the electric motor to each other;
an electronic component that is electrically connected to the circuit substrate; and
a holder made of plastic that holds the electronic component, the circuit substrate being fixed to the holder, wherein
the connector is integrated with the holder in a state in which the bus bar is electrically connected to the circuit substrate,
the holder has a holder circumferential wall that surrounds the connector and is arranged at an outer side of an outer circumferential edge of the circuit substrate,
the holder has a substrate mounting surface on which the circuit substrate is mounted,
the holder circumferential wall extends from an outer circumferential section of the substrate mounting surface,
the holder and the circuit substrate each include a positioning portion for positioning the holder and the circuit substrate relative to each other,
the positioning portion of the circuit board includes an outer circumferential edge of the circuit substrate that extends along an inner circumferential surface of the holder circumferential wall, and
the positioning portion of the holder includes the inner circumferential surface of the holder circumferential wall that the outer circumferential edge of the circuit substrate is allowed to contact.

10. The motor-driven compressor according to claim 9 , wherein the electronic component is one of multiple electronic components that include a filter element and a switching element.

11. A motor-driven compressor comprising:
a compression portion that compresses fluid;
an electric motor that drives the compression portion;
a motor controller that has a circuit substrate for driving the electric motor;
a housing that has an inverter accommodating chamber for accommodating the motor controller;
a connector that has a connecting terminal and a bus bar, the bus bar being provided to electrically connect the connecting terminal to the circuit substrate;
a terminal pin that is fixed to the housing and removably inserted in the connecting terminal, thereby electrically connecting the connector and the electric motor to each other;
an electronic component that is electrically connected to the circuit substrate; and
a holder made of plastic that holds the electronic component, the circuit substrate being fixed to the holder, wherein
the connector is integrated with the holder in a state in which the bus bar is electrically connected to the circuit substrate,
the holder has a holder circumferential wall that surrounds the connector and is arranged at an outer side of an outer circumferential edge of the circuit substrate,
the holder has a plurality of tubular boss portions, wherein screw members are inserted into the corresponding boss portions to attach the holder to the housing,
the holder and the circuit substrate each include a positioning portion for positioning

Assignees

• Toyota Jidoshokki Kk

Inventors

• Okochi Takeshi
• Kinoshita Yusuke
• Yano Junya
• Yamakage Shumpei

Classifications

• H02K11/33

  Drive circuits, e.g. power electronics (H02K11/38 takes precedence) · CPC title

• F04C29/0085

  Prime movers · CPC title

• F04C2240/803

  Electric connectors or cables; Fittings therefor · CPC title

• F04C2240/40

  Electric motor · CPC title

• H02K7/14 Primary

  Structural association with mechanical loads, e.g. with hand-held machine tools or fans (with fan or impeller for cooling the machine H02K9/06) · CPC title