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A scheme for compensating the effect of temperature changes on proximity sensors in elevator mechanical brakes

A mechanical brake, proximity sensor technology, used in elevators, electronic switches, electrical components, etc., to solve problems such as temperature changes

Active Publication Date: 2020-12-18
KONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, thermal expansion and switching point temperature drift together create problems, especially in application areas where the distance between the proximity sensor and the target is small and the temperature can change a lot

Method used

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  • A scheme for compensating the effect of temperature changes on proximity sensors in elevator mechanical brakes
  • A scheme for compensating the effect of temperature changes on proximity sensors in elevator mechanical brakes

Examples

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Embodiment Construction

[0021] The specific examples provided in the description given below should not be construed as limiting the scope and / or applicability of the invention. The list of examples and groups provided in the description below are not exhaustive unless expressly stated otherwise.

[0022] Next, at least some aspects of the invention are described with reference to an inductive proximity sensor implemented in an elevator brake. exist figure 1 Such an implementation is schematically disclosed in , where a proximity sensor is used to monitor the operating state of a mechanical brake. As shown, the mechanical brake includes an armature part 110 , a frame part 120 and a plurality of springs 130 arranged between the armature part 110 and the frame part 120 . The spring may be mounted to the armature part 110 or the frame part 120, or to both. The frame part 120 includes an electromagnet having a coil and a magnetic field may be generated by supplying a current to the coil of the electro...

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PUM

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Abstract

The present invention relates to a mechanical brake of an elevator, wherein the mechanical brake comprises: a frame part including an electromagnet, an armature part, and wherein the mechanical brake further comprises an inductive proximity sensor mounted indirectly to one of the following: the frame part, the An armature part, where the mechanical brake also includes for establishing indirect mounting: a temperature variation compensation device mounted between the inductive proximity sensor and one of the following: frame part, armature part. Some aspects relate to methods for compensating for variations in switching points of inductive proximity sensors.

Description

technical field [0001] The present invention generally relates to the technical field of elevators. More specifically, the invention relates to the compensation of the effects of temperature variations in mechanical brake solutions for elevators. [0002] technical background [0003] A proximity sensor is a sensor configured to monitor the presence or absence of a target within the sensor's operating range. There are different types of proximity sensors available. For example, the operation of a proximity sensor may be based on the capacitance between the sensor and target or the inductance between the sensor and target. Furthermore, photoelectric sensors can also be considered as proximity sensors, since the reflection of transmitted light can be monitored and analyzed in order to detect the presence or absence of a target. Other types of proximity sensors are also known. The choice of proximity sensor usually depends on the application area where the proximity sensor i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B5/00
CPCB66B5/0018B66B1/32H03K17/9502H03K2217/94026H03K2217/96038B66B5/00H03K17/95B66B1/36
Inventor H.瓦卡梅基J.罗西T.科尔霍宁Z.严
Owner KONE CORP