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Waterproof encoder

A technology of encoders and knobs, applied in the field of encoders, can solve the problems of unsafe use and high cost, and achieve the effects of safe use, low cost and long service life

Active Publication Date: 2012-01-11
佛山市心静电磁科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is not safe to use on electrical appliances in some kitchens, bathrooms, etc.
[0005] Electromagnetic induction type: the switch is realized by the iron core and the inductance coil, and the cost is high

Method used

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Examples

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Embodiment Construction

[0023] refer to Figure 1-4 , the waterproof encoder, including:

[0024] A bottom shell 2, it has a flat plate 21, there is a cylindrical hollow protrusion 22 in the middle part above the flat plate 21, and the center of the top surface of the hollow protrusion 22 extends to the inside of the protrusion 22 to form a shaft seat 23, and the upper end surface of the shaft seat 23 has A concave cavity 24, a concave cavity 25 is formed on the lower end surface of the shaft seat 23, and two U-shaped grooves 26, 27 are arranged on the same circumference in the cylindrical hollow protrusion 22;

[0025] A knob 1, which includes a knob cover 11, a multi-pole magnetic ring 12 is fixed on the inner peripheral wall of the knob cover 11, and a shaft 13 is fixed inside the knob cover 11 at the center of the top surface of the knob cover 11, and the knob cover 11 is sleeved Outside the boss 22 of the bottom case 2, the shaft 13 on the knob cover 11 passes through the shaft seat 23 on the b...

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Abstract

The invention discloses a waterproof encoder comprising a bottom case, a knob, a control circuit board and two Hall elements. The bottom case is provided with a flat plate, a columnar hollow boss is arranged in the middle of the upper surface of the flat plate, the center of the top surface of the hollow boss extends towards the interior of the boss to form a shaft seat, the upper end surface andthe lower end surface of the shaft seat are respectively provided with a concave cavity, and the columnar hollow boss is internally provided with two U-shaped grooves. A multipolar magnetic ring is fixedly arranged on an inner peripheral wall of a knob cover, a shaft is fixedly arranged at the centre of the inner top surface of the knob cover, the knob cover covers outside the boss of the bottom shell, the shaft on the knob cover penetrates through the shaft seat on the bottom case and then is provided with a snap ring at the lower end, and the concave cavity of the lower end surface of the shaft seat is provided with a waterproof plug. The control circuit board is arranged in the hollow boss of the bottom shell. The two Hall elements are respectively arranged in the two U-shaped grooves of the bottom case and are connected with the control circuit board. The encoder can safely and stably work, has long service life even under a damp or water-sprayed environment, and has simple structure and low cost.

Description

technical field [0001] The present invention relates to encoders, in particular to encoders for converting angular displacements into coded digitized electrical signals. Background technique [0002] An encoder is a sensor device that converts angular displacement or linear displacement signals into encoded digital electrical signals. The former is called a code disc, and the latter is called a yardstick. According to the readout method, the encoder can be divided into two types: contact type and non-contact type. The contact type adopts the brush output, and the state of the code is "1" or "0" when the brush touches the conductive area or the insulating area; the non-contact type accepts the sensitive element is a photosensitive element or a magnetic sensitive element, and when the photosensitive element is used, the code is "1" or "0". The light-transmitting area and the opaque area indicate whether the state of the code is "1" or "0"; when the magnetic sensor is used, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D5/244G01D5/12
Inventor 丘守庆许申生马艳明刘春光吕真
Owner 佛山市心静电磁科技有限公司
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