Manual Pulse Generator

Abstract

The present invention provides a manual pulse generator capable of detecting the rotation and the direction of rotation of a rotating body with high sensitivity and capable of appropriately outputting pulses. In the sensor unit (10) of the manual pulse generating device, when the rotating body (6) is rotated by manual operation, the rotation is detected by the sensor unit (8), and a pulse is generated according to the detection result. The sensor unit (8) has a permanent magnet (65) that rotates in conjunction with the rotating body (6), and detects the rotation of the permanent magnet (65) through a magnetoresistive element (57) held by a support (200). The sensor unit (8) is magnetically shielded on the rear side by a sensor case (52) formed of a magnetic material. On the other hand, the sensor cover (51) located on the operation surface side (L2) with respect to the sensor part (8) is made of resin.

Description

technical field [0001] The invention relates to a manual pulse generating device for generating pulses through manual operation. Background technique [0002] Manual pulse generators used to set machining conditions for numerically controlled machine tools such as machining centers or to check the operation of electronic equipment, etc., generate pulses corresponding to the rotation angle of the rotating body when rotating a rotating body such as a dial by manual operation. In such a manual pulse generator, it has been proposed to use an optical sensor when detecting the rotation of the rotating body (see Patent Document 1). [0003] Patent Document 1: Japanese Patent Application Publication No. 2-110817 [0004] However, when an optical sensor is used as in the structure described in Patent Document 1, there is a problem that false detection may occur if foreign matter such as oil adheres to the sensor. In particular, since the manual pulse generator is often used in an e...

AI Technical Summary

Problems solved by technology

[0004] However, when an optical sensor is used as in the structure described in Patent Document 1, there is a problem that false detection may occur if foreign matter such as oil adheres to the sensor.

In particular, since manual pulse generators are often used in environments with machining centers, etc., there is a high possibility of foreign matter such as oil adhering to them.

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