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Pressure sensors, safety devices and safety systems for emergency stop

By using a modified rubber or rubber composition intermediate layer in the emergency stop pressure sensor, the pressure detection sensitivity during contact is improved, the problem of detection delay in the existing technology is solved, and injuries caused by contact or collision are significantly reduced. risk.

Inactive Publication Date: 2021-03-16
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the sensor has low pressure detection sensitivity upon contact
Especially when using compressive fluids such as air, the detection is significantly reduced
The contact / collision state continues until the movable part stops driving, which makes it difficult to reduce damage

Method used

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  • Pressure sensors, safety devices and safety systems for emergency stop
  • Pressure sensors, safety devices and safety systems for emergency stop
  • Pressure sensors, safety devices and safety systems for emergency stop

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] Embodiments of the present invention will now be described with reference to the accompanying drawings. Figure 1-Figure 6 The first embodiment will be described below.

[0027] summary

[0028] figure 1 is a schematic cross-sectional view of an element according to the present embodiment. The element 1 has a first electrode 2 and a second electrode 3 facing each other and an intermediate layer 4 provided between the first and second electrodes and formed of rubber or a rubber composition.

[0029] detail

[0030] first electrode and second electrode

[0031] The material, shape, size, and structure of the first electrode and the second electrode are not particularly specified and may be selected as appropriate according to purposes. Materials, shapes, dimensions, and structures may or may not be shared between the first and second electrodes, although sharing is more preferred. Examples of materials for the first electrode and the second electrode include metals,...

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PUM

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Abstract

Emergency stop pressure sensors 17 are provided to both side surfaces of the movable bar 11 of the robot arm 14 of the assembly robot. When the operator S inadvertently approaches the rotation range Ra of the robot arm 14 and touches the emergency stop pressure sensor 17, a detection signal is sent to the control means 19, and the control means 19 blocks the transmission to the driving source for causing the robot arm to rotate. electricity supply. The emergency stop pressure sensor 17 has a first electrode and a second electrode constituting a pair of electrodes, and an intermediate layer formed of rubber or a rubber composition and provided between the pair of electrodes, the intermediate layer passing through the contacted body ( The contact of the operator) deforms to generate electricity. One stacking direction side of the intermediate layer is subjected to surface modification treatment and / or passivation treatment, so that the one side and the other side are deformed to different degrees by the same deformation imparting force.

Description

technical field [0001] The present invention relates to a pressure sensor for an emergency stop, a safety device, and a safety system. Background technique [0002] For example, if a worker inadvertently walks within the range of motion of a movable part of a robot that delivers products to an assembly location, it is possible for the worker to come into contact with the robot. The same thing happens when something is inadvertently placed within the range of motion of the movable part. In order to reduce or prevent injuries caused by sudden contact or collision, it is necessary to sense the contact immediately, turn off the driving power of the movable body as quickly as possible, and cause the movable body to move in the opposite direction to the contact direction. [0003] A safety device for a robot is devised that provides a hollow body on the surface of the movable part of the robot, senses a change in pressure inside the robot when the hollow body is pressed upon cont...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/16B25J19/02B25J19/06H10N30/30
CPCB25J19/06G01L1/16B25J13/081H10N30/302H10N30/04H10N30/857B25J19/02H10N30/308B25J19/028B25J19/063B32B15/06B32B25/20B32B2307/202G05B19/048G05B2219/50198
Inventor 名取润一郎近藤玄章菅原智明荒海麻由佳今井崇寻宫泽秀之小田切瑞树
Owner RICOH KK
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