JPS6342486Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a door lock actuator, and more particularly to a door lock actuator that automatically locks and unlocks the doors of an automobile or the like using an electrically operated switch.

The door lock actuator previously proposed by the present inventor (see, for example, Utility Application No. 55-104728 filed by the present applicant) will be explained with reference to FIG.

Here, FIG. 1 is a longitudinal sectional front view of a door lock actuator previously proposed by the present inventor.

In the figure, 1 is a cylindrical yoke made of a soft magnetic member with an E-shaped end face in longitudinal section, and 2 and 2a are cylindrical electromagnetic coils, which are connected so that the same polarity occurs in adjacent parts. However, it is arranged inside the cylindrical yoke 1.

3 is a permanent magnet magnetized in the axial direction; 4, 4;
a has permanent magnets 3 at both ends of the permanent magnet 3, respectively.
The magnetic pole pieces 5, 5a fixed on both sides are sliding shafts fixed to the ends of the magnetic pole pieces 4, 4a, respectively, and the permanent magnet 3 and the magnetic pole pieces 4, 4a constitute a mover 6. It is something.

7 and 7a are bearings made of non-magnetic material attached to both ends of the cylindrical yoke 1, respectively, and are attached to the sliding shafts 5 and 7a.
By inserting the movable element 5a into the bearings 7, 7a, the movable element 6 is attached to the center of the cylindrical yoke 1 so as to be slidable in the axial direction.

Reference numerals 8 and 8a are impact sound absorbing members made of, for example, rubber and fixed to the bearings 7 and 7a, respectively.

In the above configuration, when the cylindrical electromagnetic coils 2 and 2a are energized so that an N pole is generated at both ends of the cylindrical yoke 1 and an S pole is generated at the center, the N pole at the end of the cylindrical yoke 1 and the magnetic pole piece 4a The magnetic pole N of the permanent magnet 3 is repelled via the magnetic pole piece 4, and the N pole of the other end is attracted to the S pole of the permanent magnet 3 via the magnetic pole piece 4, and the mover 6 slides in the direction of the arrow A. do.

Conversely, if the cylindrical electromagnetic coils 2 and 2a are energized so that an S pole is generated at both ends of the cylindrical yoke 1 and an N pole is generated at the center, the mover 6 , which slides in the direction of arrow B.

The above-mentioned structural disadvantage of the door lock actuator is that the impact sound absorbing members 8, 8a are connected to the bearing 7,
7a, respectively.

This is because the bearings 7, 7a are generally oil-impregnated bearings, which have the drawback of being difficult to bond.

The present invention eliminates the above-mentioned drawbacks and aims to provide an actuator for a door lock in which an impact sound absorbing member can be easily fixed by adhesion or press-fitting.

The feature of the present invention is that two cylindrical electromagnetic coils are arranged in a cylindrical yoke having an E-shaped longitudinal cross-sectional end face so that the same polarity occurs in adjacent parts, and the cylindrical yoke In a door lock actuator in which a mover is provided in the central part, the mover is made of a permanent magnet magnetized in the axial direction and has a magnetic pole piece at the axial end. This actuator for a door lock has an impact sound absorbing member provided in a recessed portion of a magnetic pole piece.

An embodiment of the present invention will be described below with reference to the drawings.

Here, FIG. 2 is a longitudinal sectional front view of a door lock actuator according to an embodiment of the present invention.

In the figure, the same symbols as in FIG. 1 indicate the same parts. 9, 9a are the recesses 1 of the magnetic pole pieces 4, 4a.
0 and 10a, respectively, are impact sound absorbing members fixed by adhesion or press fitting.

As explained above, the structure of the door lock actuator according to this embodiment is such that the impact sound absorbing members 9, 9a of the movable element 6 are fixed to the magnetic pole pieces 4, which are fixed to both ends of the permanent magnet 3, respectively, with the permanent magnet 3 sandwiched therebetween. ,4a
Since it is provided in the recesses 10 and 10a, it can be easily fixed by press-fitting.
Further, since the magnetic pole pieces 4 and 4a are free of oil, they can be easily fixed by adhesive.

As described above, the door lock actuator according to the present invention can be considered as a door lock actuator that can be easily fixed by adhesion or press-fitting, and can be said to be a device with excellent practical effects. .

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view of a door lock actuator previously proposed by the present inventor, and FIG. 2 is a longitudinal sectional front view of a door lock actuator according to an embodiment of the present invention. 1... Cylindrical yoke, 2, 2a... Cylindrical electromagnetic coil,
3... Permanent magnet, 4, 4a... Magnetic pole piece, 6... Mover,
9, 9a... Impact sound absorbing member, 10... Recessed portion.

Claims (1)

[Scope of utility model registration request] Two cylindrical electromagnetic coils are arranged in a cylindrical yoke having an E-shaped longitudinal cross-sectional end so that the same polarity occurs in adjacent parts. 1. An actuator for a door lock, comprising a movable member having a permanent magnet magnetized in a direction, a magnetic pole piece having a recess fixed to both ends thereof, and an impact sound absorbing member fixed to the recess.