JPS5852259U - Actuator for door lock - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

Fig. 1 is a sectional view of the electromagnetic solenoid, Fig. 2 is a thrust characteristic diagram of Fig. 1, and Fig. 3 is a longitudinal sectional view showing an embodiment of the present invention.
FIG. 4 is a thrust characteristic diagram of FIG. 3, FIG. 5 is a diagram for explaining the dimensional relationship of the device of the present invention, and FIG. 6 is an enlarged sectional view of the main part of FIG. 5 for explaining the tapered shape. It is. 6: Yoke, 13.13': Electromagnetic coil, 14: Mover, 15: Permanent magnet, 16.16': Magnetic pole piece, 1
7.17': Sound absorbing material, 18: Shaft. Correction 1984. 5.12 The scope of claims for utility model registration shall be amended as follows. O Utility Model Registration Claim 1 In an actuator for a device that automatically locks and unlocks a door using an electric operation switch, a yoke made of a soft magnetic material whose end face shape in longitudinal section in a plane including the shaft is formed into a substantially E shape. Two electromagnetic coils are arranged so that the same polarity occurs in adjacent parts, and in the center of the yoke, a permanent magnet magnetized in the axial direction is placed at both ends of the permanent magnet, which is almost the same as the permanent magnet. It consists of an annular part and a truncated conical part having an outer diameter of , and the taper angle of the truncated conical part is 5° to 25°.
A movable element holding a pair of magnetic pole pieces set within a range of An actuator for a door lock, comprising a reciprocating drive device formed of a reciprocating drive device. 2 Set the dimensional relationship between the yoke and mover as shown below,
2. The door lock actuator according to claim 1, further comprising a reciprocating drive device having a thrust characteristic in which the thrust in the first half of the operation is larger than the thrust at the end of the operation.

Claims (1)

[Claims for Utility Model Registration] 1. In an actuator for a device that automatically locks and unlocks a door using an electric operation switch, a yoke made of a soft magnetic material whose longitudinal cross-sectional end face in a plane including the shaft is formed into a substantially E shape. Two electromagnetic coils are arranged so that the same polarity occurs in adjacent parts, and in the hollow part of the yoke, a permanent magnet that is magnetized in the axial direction is placed at both ends of the permanent magnet, which is approximately the same as the permanent magnet. A movable element holding a magnetic pole piece consisting of an annular part and a truncated conical part having an outer shape is disposed so as to be movable in the axial direction, and inner circumferential surfaces on both sides of the yoke are shaped like a truncated conical part of the magnetic pole piece. What is claimed is: 1. A door lock actuator formed in a similar shape to the truncated conical portion, wherein the truncated conical portion has a taper angle of 5° to 25°. 2. A request for registration of a utility model characterized in that the dimensional relationship between the yoke and the mover is set as below, and the reciprocating drive device is equipped with a generated thrust characteristic such that the thrust at the start of operation is larger than the thrust at the end of operation. A door lock actuator according to item 1 of the scope of the invention. D, A>C B≧C≧lf However, A: Axial length between the end magnetic pole pieces of the E-type yoke B: Axial length of the center magnetic pole piece of the E-type yoke C: Axis between the end magnetic pole pieces on the outer peripheral surface of the mover Directional length D = Mover axial length lf: Gap between E-type yoke inner circumferential surface and mover outer circumferential surface