Electric actuator

Abstract

The invention provides an electric actuator which can be in a stable and firm connection even though the inserting volume of a connecting terminal is deviated. The electric actuator includes a stator, combined with a three-phase terminal (8), of an electric motor, and a convertor substrate (13), electrically connected with the three-phase terminal, of a port type terminal (35), the three-phase terminal includes a tip end portion (8a) having a rectangular flat plate shape, the port type terminal includes tip end portions (35e, 35f) opposed to each other with a clearance, the clearance (C) having a width (W) between tip end surfaces (35g, 35h)of the tip end portions (35e, 35f) which is smaller than a width (W1) of the three-phase terminal (8). The tip end portions of the three-phase terminal overcomes the elastic force of the tip end portions of the port type terminal to insert into the clearance (C)so as to connect the tip end portions of the three-phase terminal with the port type terminal.

Description

technical field [0001] The present invention relates to an electric actuator used, for example, in an electric power steering device of a vehicle. Background technique [0002] As is well known, for example, in an electric power steering device for a vehicle, the rotational driving force of an electric motor, which is an electric actuator, is used to assist a driver in rotating the steering device. [0003] The electric motor rotates under the control of a control device including electronic equipment such as a relay circuit and a capacitor. In the control device, a plurality of circuits such as a power supply circuit and a control circuit are connected through connection terminals. [0004] As the connection terminal, for example, there is a connection terminal described in Patent Document 1 below. [0005] Briefly, the elongated plug-in web is molded on the first crimping member on the side of the socket-type terminal utilizing resin molding, and on the other hand, the se...

AI Technical Summary

Problems solved by technology

[0008] However, in the conventional terminal connection structure, when the fork-shaped front end is pushed into the plug-in web through the slot of the second crimping element, the fork-shaped front end is moved in the diameter-expanding direction. Press-fitting is carried out while plastically deforming, so the elastic force of the fork-shaped front end in crimping contact with the plug-in beam web is relatively small. Big holding power of abdomen

[0009] As a result, when the insertion amount of the fork-shaped front end is insufficient, the electrical connection between the first crimping element and the second crimping element may be reduced due to vibration or the like.

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