KR20030025573A - A Safety Mat with Multiple Switchs - Google Patents

Abstract

PURPOSE: A safety mat having a switch is provided to protect a worker from an accident occurred by mechanical trouble and wrong operation. CONSTITUTION: A safety mat having a switch includes a body unit comprised of a check plate(110) forming the upper surface, and a base(120) forming the lower surface; a sensing unit comprised of a switch(210) installed inside the body unit, to sense pressure, a guide(220) to protect the switch and support the check plate, and a stopper(230) to protect breakage of the switch by pressure and protect droop of the check plate; and a controller(400) connected to the switch of the sensing unit through a cable(300), to analyze and control an electrical signal transmitted from the sensing unit. Thus, the safety mat is less restricted by environment, and breakage and wrong operation are prevented.

Description

Safety Mat with Multiple Switches

The present invention relates to a safety mat installed with a switch, and more particularly, a switch installed by a pressure-operated switch and connected to a controller to protect a worker from a safety accident caused by a malfunction or a malfunction of a machine at a work site. It is about safety mat.

In general, as the robots and automated machine tools increase due to the automation of factories, the danger area in the factories is increasing.In order to prevent accidental safety accidents that occur due to this, many safety devices are installed at the industrial sites. .

However, the various safety devices installed around the industrial machine are subject to a lot of restrictions in the installation place. Especially, it is difficult to install in places with poor environment, and most of the safety devices used are operated in close proximity by using optical sensors. This stationary proximity sensor was common.

Figure 1 shows a conventional safety mat for controlling the operation of the machine by detecting a constant pressure in the form of a mat of the above safety device.

The safety mat 10 is,

Sponge plate 4 having a plurality of through holes, sensing nets 2 and 3 attached to upper and lower front surfaces of the sponge plate 4, and outer surfaces of the sensing nets 2 and 3, respectively. Attached to the rubber mat (1) to protect the sensing network (2) (3) from the outside, the cable (5) connected to the sensing network (2) (3), and the controller (6) connected to the cable Consists of.

Referring to the operation of the safety mat 10 is as follows.

When the operator applies a pressure of more than a certain degree to the rubber mat 1, the sensing nets (2) (3) attached to the upper and lower surfaces of the sponge plate (4) is pressed in the direction of the load formed on the sponge plate (4) It passes through the through hole 7 and the upper sensing net 2 and the lower sensing net 3 are in contact with each other.

The contacting network (2) (3) thus contacted sends a signal to the controller (6) by a cable (5) connected to the end of the sensing network (2) (3) and the controller (6) stops the machine. Or to perform a specific action such as a risk warning.

However, the rubber mat 10 is made of a rubber material which is vulnerable to heat and oil, and is restricted in the installation place, and there is a problem such as deformation and breakage such as bending or tearing for a long time, and the thin copper plate The detection network is often damaged and adhered to the sponge, making it difficult to repair, and there are various problems that hinder smooth operation due to malfunction of the foreign matter.

The present invention is to improve the various problems of the related art as described above, the object of which is not limited to the installation place and environment, does not deform and break during long-term use, easy to maintain and prevent malfunctions to be smooth operation It is to provide a safety mat provided with a switch.

1 is an exploded perspective view showing a conventional safety mat;

Figure 2 is an exploded perspective view of a part of the safety mat is installed switch according to the present invention;

Figure 3a and 3b is a cross-sectional view taken along line A-A 'showing the state before and after the operation of the safety mat with the switch according to the present invention, respectively;

Figure 4 is an exploded perspective view showing a guide of the safety mat is installed switch according to the present invention;

Figure 5a and 5b is a cross-sectional view showing a state before and after the operation of the switch of the safety mat is equipped with a switch according to the present invention, respectively.

<Explanation of symbols for the main parts of the drawings>

100.Main Unit 220 ... Guide

110 ... check plate 230 ... stopper

120 ... base 300 ... cable

200 detector 400 controller

210 ... switch

The present invention as a technical configuration of the present invention for achieving the above object,

In the safety mat with the switch,

A body part comprising a check plate forming an upper surface and a base forming an lower surface;

A switch installed inside the main body to sense pressure, a guide that protects the switch and supports the check plate and operates smoothly, and a stopper which prevents damage to the switch and sag of the check plate due to pressure. Detection unit consisting of; And

A controller connected to the switch of the sensing unit through a cable to analyze and control an electrical signal transmitted from the sensing unit; including a switch that is operated by pressure and connected to the controller, thereby being damaged while being less restricted by the surrounding environment. To provide a safety mat with a switch, characterized in that less deformation and malfunction and easy maintenance.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is an exploded perspective view of a part of the safety mat is installed switch according to the present invention; Figures 3a and 3b is a cross-sectional view taken along line A-A 'showing the state before and after the operation of the safety mat is equipped with a switch according to the present invention; 4 is an exploded perspective view showing a guide of a safety mat installed with a switch according to the present invention; and FIGS. 5A and 5B are cross-sectional views showing states before and after operation of a switch of a safety mat provided with a switch according to the present invention, respectively. As an embodiment, the present invention includes a main body constituting the upper and lower parts, a sensing unit for sensing pressure transmitted through the main body, a cable connected to the sensing unit, and a controller for analyzing and controlling a signal sent from the cable.

2 to 3, the main body 100 is composed of a check plate 110 constituting an upper portion and a base 120 constituting a lower portion.

The check plate 110 is a flat plate made of a rigid material having a predetermined area, and a flange 111 is formed vertically toward the floor over the entire circumference.

The base 120 is a flat plate made of a hard material having a predetermined area, and the flange 121 is formed vertically upwards over the entire circumference, and the clearance is maintained while maintaining a predetermined interval inside the check plate 110. It is configured to be inserted.

On the other hand, the check plate 110 and the base 120 constituting the main body 100, it is preferable to use a material such as steel (Steel) to withstand high heat or oil and external impact.

The sensing unit 200 installed inside the main body 100 protects the switch 210 and the switch 210 which are fixed by bolts to both edges of the base 120 to sense pressure. While supporting the check plate 110, the guide 220 is installed in front of the switch so that the check plate 110 operates smoothly up and down, and breakage of the switch 210 due to excessive pressure and the It consists of a stopper 230 attached to the center of the base to prevent sagging of the check plate (110).

As shown in FIG. 5, the switch 210 is vertically inserted by an elastic member A 212 inserted into one side of the groove 215 formed on the upper portion of the switch body 216 and inserted into the groove 215. The switch body (211) which is installed to move to the, the conductive terminal A (214) attached to both lower sides of the switch lever 211, and the switch body in a state in contact with the upper surface of the conductive terminal A (214) ( 216 is fixed to the conductive terminal A (214) is moved to be made of the conductive terminal B (213) is installed so as to be separated and coupled to the base 120 and the bolt.

On the other hand, the switch body 216 is preferably composed of a bakelite material to withstand high heat and strong impact.

As shown in FIG. 4, the guide 220 installed at the front of the switch 210 includes a cylindrical support 221 having an upper and lower openings, and an elastic member B inserted into the support 221. 223 and a moving member 222 inserted into one side of the supporter 221 and installed up and down by the elastic member B 223 and the supporter 221 is a base 120. And fixed by welding or bonding.

On the other hand, the moving member 222 may not be fixed with the check plate 110, but the bolt after fixing the check plate 110 and processing the coupling hole 112 in the check plate to operate smoothly. 225).

The stopper 230 installed at the center of the base 110 is made of a hard material having the same height as the switch body so that the check plate 110 and the base 120 maintain a predetermined distance therebetween. Is fixed to 120.

The cable 300 for electrically transmitting the signal sensed by the sensing unit 200 is coated with a special material to withstand high heat, and is connected to the ends of the conducting terminal B 213 of the switch 210, respectively. It is connected to the controller 400.

Referring to the operation and effect of the present invention made of such a configuration as follows.

When the moving member 223 is assembled by inserting the check plate 110 fixed with the bolt 225 to the support 221 fixed to the base 120 to correspond to the moving member 223, the check plate 110. ) Is supported while maintaining a predetermined interval with the base 120, it is possible to move up and down by the elastic member 223 installed inside the support 221, the check plate 110 is removable. This makes it easy to maintain.

As shown in FIG. 3, when an operator applies a predetermined pressure or more by stepping on the check plate 110 or impacting a part of the body in the assembled state as described above, the guide 220 supports it. The check plate 110, which has been used, descends.

Here, the check plate 110 is prevented from falling below a certain pressure to prevent malfunction due to the fall of foreign matter.

In this case, the pressure degree may be adjusted by adjusting the elastic force of the elastic member 223 installed inside the guide 220 or by adjusting the height of the movable member 222 of the guide 220.

In addition, the check plate 110 is lowered by an instantaneous pressure to maintain a predetermined interval between the switch 210 installed in the base 120 and the check plate 110 to move the switch 210. Operation to prevent malfunction.

As shown in FIG. 5, when the predetermined pressure or more acts as described above, the check plate 110 is lowered and the switch lever 211 is pressed while pressing the switch lever 211 protruding from the upper portion of the switch 210. If it is lowered down the conductive terminal A (214) fixed to both sides to the switch lever 211 is also lowered to be in contact with the conductive terminal B (215).

Each of the separate terminals A and B 214 and 215 electrically transmits a signal to the controller 400 through the cable 300, and the controller 400 stops the operation of the machine or generates a warning sound, It will execute a specific action such as activating a warning light.

On the other hand, the stopper 230 prevents damage to the switch 210 and the guide 220 from the descending check plate 110, because the height of the stopper 230 to the switch 210 and the guide ( Install so that it is higher than 220).

When the pressure applied to the check plate 110 is removed, the guide 220 pushes the check plate 110 upward by the elastic member B 223 to return the check plate 110 to its original position. Accordingly, the switch lever 211 is also returned upward by the elastic member A 212 so that the energizing terminal A 214 and the energizing terminal B 215 are in contact with each other.

The cable 300 transmits the contact signal from the switch 210 to the controller 400 and the controller 400 restarts the machine or stops the operation of the warning sound and the warning light, respectively. The cable connected to the switch will monitor and warn of the malfunction of the detector.

In this way, the safety mat attached to the switch, the check plate is lowered by the pressure acting on the check plate by operating the switch installed inside the main body to transmit the detected signal to the controller through the cable, the controller is a variety of safety measures In particular, it is made of a material such as steel to withstand high heat, oil, and external shocks, so that the worker can be safe and smooth even in long-term use.

As described above, according to the safety mat provided with the switch,

By installing a switch operated by the pressure acting on the check plate, it prevents malfunction due to the dropping of impurities and prevents deformation and damage by constructing the body and sensing parts made of materials resistant to high temperature, oil, and external shock. Therefore, there is little damage and deformation even for long time use, and each component can be attached and detached, and thus there is an excellent effect of easy maintenance.

While the invention has been shown and described with respect to particular embodiments, it will be appreciated that the invention can be varied and modified without departing from the spirit or scope of the invention as set forth in the claims below. It will be appreciated that those skilled in the art can easily know.

Claims (3)

In the safety mat with a switch, A main body portion 100 including a check plate 110 forming an upper surface and a base 120 forming a lower surface; A switch 210 installed inside the main body 100 to sense pressure, a guide 220 for protecting the switch 210 and supporting the check plate 110, and the switch by pressure ( A detection unit 200 formed of a stopper 230 for preventing breakage of the 210 and sag of the check plate 110; And A controller 400 connected to the switch 210 of the sensing unit 200 through a cable 300 to analyze and control an electrical signal transmitted from the sensing unit 200; Safety Mat with switch installed, characterized in that less damage, deformation and malfunction, and easy maintenance, while installing the switch and connecting to the controller to be less restricted by the surrounding environment. The method of claim 1, wherein the switch 210, A switch lever 211 which is inserted into a groove 215 formed on an upper portion of the switch body 216 and moved up and down by an elastic member A 212 inserted into the groove 215; A conducting terminal A (214) attached to both lower sides of the switch lever 211; And It is fixed to the switch body 216 in contact with the upper surface of the conductive terminal A (214) and the conductive terminal B (215) is installed to be separated when moved below the conductive terminal A (214); Safety mat with switch. According to claim 1, The guide 220 is installed in front of the switch 210, Cylindrical support 222, the upper and lower open; An elastic member B 223 inserted into the support 222; And One side is inserted into the support 222, the movable member 222 is installed to move up and down by the elastic member B (223); Safety mat provided with a switch comprising a.