Photoelectric encoder coded disc, photoelectric detection device, photoelectric encoder and robot

Abstract

The invention discloses a photoelectric encoder coded disc, a photoelectric detection device, a photoelectric encoder and a robot, and belongs to the technical field of encoders. The photoelectric encoder coded disc comprises a gear-shaped disc body and a code reading plate which is perpendicularly connected with the gear-shaped disc body, and the whole photoelectric encoder coded disc is in the shape of a mouse cage. The photoelectric detection device comprises a light source transmitting unit, a light source receiving unit and a control circuit board, and when the photoelectric encoder coded disc is used with the photoelectric detection device, the code reading plate is inlaid between the light source transmitting unit and the light source receiving unit. By the mouse-cage-shaped structure of the photoelectric encoder coded disc, the light source transmitting unit and the light source receiving unit are not required to be placed on two sides of an end surface of the disc-shaped coded disc, so that a control circuit board can be stably connected with the light source transmitting unit and the light source receiving unit, photoelectric signals are transmitted well, the whole structure of the photoelectric encoder is stable, anti-noise performance in signal transmission is good, and the shock resistance is high.

Description

technical field [0001] The invention relates to the technical field of encoders, in particular to a photoelectric encoder code disc, a photoelectric detection device, a photoelectric encoder and a robot. Background technique [0002] A photoelectric encoder is a sensor that converts the mechanical geometric displacement on the output shaft into a pulse or digital quantity through the principle of photoelectric conversion, and is now mostly used to measure the speed of the motor. Such as figure 1 As shown, the photoelectric encoder in the prior art is composed of a photoelectric encoder code disc 1 (grating disc) and a photoelectric detection device 2, and the structure of the photoelectric encoder code disc 1 is mostly opened in equal parts on a circular plate with a specific diameter. A rectangular hole, the photoelectric detection device 2 includes a light source emitting unit, a light source receiving unit and a control circuit board, the photoelectric detection device 2...

AI Technical Summary

Problems solved by technology

In the existing design, the code disc of the photoelectric encoder is a disc structure, which must be placed in the groove of the photoelectric detection device, and the light source emitting unit and the light source receiving unit must also be connected with the control circuit board including the photoelectric conversion circuit and the photoelectric processing circuit. At this time, the light source emitting unit and the light source receiving unit need to be set above the control circuit board and ensure that they are electrically connected to the control circuit board. This design will not only cause unstable connection between the control circuit board and the light source emitting unit and light source receiving unit. It will also affect the transmission of photoelectric signals

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