KR20020093399A - Electric mattress having dual safety apparatus - Google Patents

Abstract

PURPOSE: An electric mattress is provided to prevent fire accident caused due to overheat of heating wire by automatically breaking power being supplied to the heating wire even when the electric mattress is not in use, while reducing power consumption. CONSTITUTION: An electric mattress comprises a heating wire(108); and switch groups spaced apart from each other, wherein the heating wire is applied with power when both switch groups are turned on. The switch groups include first switching elements(140) arranged at the inner surface of the electric mattress and which are turned on/off by the press of an upper body part of user; and second switching elements(160) spaced apart from the first switching elements and which are turned on/off by the press of a lower body part of user. The power switching is performed by switching signals output from first and second switching elements, and a control unit for controlling power supply to the heating wire by judging the existence of switching signal within a predetermined delay time when the switching signal is turned off.

Description

Electric mattress having dual safety apparatus

The present invention relates to an electric mattress having a double safety device, and more particularly, the switch is provided in a position corresponding to a specific part of the human body to control the power supply differently according to the switching, when the power supply is not in use An electric mattress is provided with a double safety device to be blocked.

Residential or industrial boilers are used for heating at home or at work, where they heat the entire space. By the way, separately from the electric panel, electric blanket, electric mattress, etc. for the local heating may be conveniently heated by generating heat by using electricity.

By the way, there is an advantage that the heating effect is provided to the user quickly when heating using such electricity, but if handled carelessly it may cause a huge fire and electric shock.

Particularly, in case of local heating using heating wire, the resistance of the heating wire itself or the prolonged use of the heating wire increases resistance difference between wire connection parts, causing corrosion or overheating and causing fire. For example, when going out or leaving the heater with the power turned on, it is not only a cause of fire, but also a waste of power.

An object of the present invention, as described above, to provide an electric mattress with a double safety device for preventing the risk of power waste and fire caused by the careless user of the heater.

Another object of the present invention is to provide an electric mattress equipped with a double safety device for preventing power waste by supplying power only while using the heater.

Still another object of the present invention is to provide an electric mattress with a double safety device that provides convenience for use by supplying power for a set delay time even when the heater is not used in a normal posture.

1 is a view conceptually showing an electric mattress equipped with a double safety device according to the present invention.

2 is a view showing a detailed configuration of the mattress of FIG.

3 is a block diagram showing the electrical connection of FIG.

4 is a view for explaining an example of a state of use of the electric mattress according to the present invention.

5 is a diagram illustrating a switching operation of a switch according to the example of FIG. 4.

6 is a flowchart illustrating a control operation according to an embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

10: mattress 12: control box

14 first switching unit 16 second switching unit

108: heating wire 120: delay time setting unit

140: first switching device 160: second switching device

Electric mattress equipped with a double safety device of the present invention for achieving the above object, in the electric mattress equipped with a heating wire, each switch group is connected to a plurality of switches are connected in parallel, the switch group is All are characterized in that the power is supplied to the heating wire when the on (on) state is maintained.

Each of the switch groups is provided with a first switching unit on a predetermined portion of the inner surface of the electric mattress, and supplies a signal for driving on or off according to whether the upper body is pressed from the surface, and a predetermined distance from the first switching unit. The second switching unit which is installed while maintaining is characterized in that for supplying a switching signal driven on or off in accordance with the weight of the lower body pressed from the surface.

The interruption of the power supply may be configured to determine whether there is a switching signal supplied from the first switching unit and the second switching unit and another switching signal within a predetermined delay time when the switching signal is turned off, thereby controlling power supply to the heating wire. Characterized in that the control means.

The control means includes a delay time setting unit for counting a set delay time; A temperature setting unit for setting a temperature by heat generation; The controller may be configured to determine a switching signal of the first switching unit and the second switching unit and a count signal of the delay time setting unit to provide a control signal for supplying power to the heating wire.

The delay time is freely set and released, the set time is preferably set to a few seconds to several hours.

Hereinafter, embodiments of the present invention will be described in more detail with reference to FIGS. 1 to 6.

1 is a view briefly showing the configuration of an electric mattress equipped with a double safety device according to the present invention, the first switching unit 14 is installed in the upper center of the mattress 10, the lower portion 2 switching unit 16 is installed, the control box 12 to control the power supply to the heating wire provided in the mattress 10 is connected.

According to the embodiment of the present invention configured as described above, the second switching part 14 is located at the position where the upper body, for example, the back part, of the user who uses the electric mattress is closed, and the second body is closed at the lower body, for example, the buttocks. The switching unit 16 is configured to be installed. That is, to intercept the power supplied to the heating wire depending on whether the user is using the electric mattress.

FIG. 2 shows a detailed configuration example of the electric mattress 10 of FIG. 1, wherein the mattress 10 includes a first switching unit 14 and a second switching unit 16 between the upper plate 100 and the lower plate 106. Is provided with a switching plate 102 is installed is a heating plate 104 is installed heating element 108.

The first switch 14 is provided with a plurality of switches 140, these switches 140 may be a piezoelectric switch that generates an electrical signal by pressing. When the piezoelectric switches are connected in parallel to each other and the switching operation is performed from any one of the switches that are initially off, the switching state of the first switching unit 14 is turned on. A representative example of the piezoelectric switch is a keyboard of a computer, and a switch for performing such a switching operation may be used.

A plurality of switches 160 are also installed in the second switching unit 16 which is 25 to 70 cm apart from the first switching unit 14, and a switching operation is performed when a pressure of a predetermined value or more is applied. That is, the pressure pressed by the switch 160 by the buttocks may be configured to switch if the pressure is more than 10 ~ 20kg, this value can also be changed according to the setting. In addition, when sleeping in the longitudinal direction of the mattress 10 due to poor sleep habits and sleeps in the horizontal direction, a certain delay time is set so that the power is supplied during the delay time, and also initially set the general mattress 10 You will be able to set the mode to. Similarly, the switches 160 are also connected in parallel with each other.

An example of the configuration of the mattress 10 and the control box 12 connected thereto are shown in FIG. 3. That is, according to FIG. 3, in the internal configuration of the control box 12, a switching signal is supplied from the first switching unit 14 and the second switching unit 16 to the control unit, and the first switching unit 14 or the first switching unit 14 is provided. When the switching signal of any one of the two switching unit 16 is low, the desired time is set in advance, the delay time setting unit 120 is counted by the corresponding time, the temperature setting unit 124 to set the desired temperature and In addition, a temperature sensing unit 126 for detecting a temperature that is actually generated is connected to the control unit 122, and the control unit 122 includes the delay time setting unit 126, the temperature setting unit 124, and the temperature sensing unit 126. The power supply and the amount of power supplied to the heating wire 108 are determined by determining the input signal.

Detailed description for the power supply and the adjustment of the power supply amount refer to FIGS. 4 to 6.

For example, suppose that the user moved from A to B, the position lying on the mattress 10 as shown in FIG. In this case, it can be said that a change occurs in the switch switched in the first switching unit 14 and the switch switched in the second switching unit 16, respectively. It can be said that there is a time during which the switch of the first or second switching unit 14 or the second switching unit 16 does not maintain the on state and is turned off while the position is moved. That is, as shown in FIG. 5, the switch S1 of the first switching unit 14 is turned from on to off, the switch S2 is turned from off to on, and the switch of the second switching unit 16 SW1) turns on from off and switch SW2 turns off from on. In this case, it can be said that a short time occurs. The delay time may be set even when the switching state of any one or both of the first switching unit 14 and the second switching unit 16 remains off.

At this time, the control unit 122 receives an on / off signal having a delay time generated from the first switching unit 14 or the second switching unit 16. The controller 122 recognizes that a delay has occurred and sets the delay time setting unit 120. ), The set time is counted. At this time, the signal for stopping the power supply is not generated during the delay time, so that a certain amount of current is continuously supplied to the heating wire 108.

When the mattress 10 is not used while sitting and is sitting for a long time, a case in which all of the switches of the first switching unit 14 or the second switching unit 16 are all turned off is generated. At this time, if the delay time is not set in the delay time setting unit 120, the controller 122 will immediately turn off the power supplied to the heating wire 108. On the contrary, if the delay time is set, the delay time setting unit 120 counts the delay time, and the controller 122 recognizes that the switch is turned off during the delay time, and then the delay time is exceeded. The control unit 122 does not supply power to the mattress 10 by supplying a signal indicating the power supply cutoff to the heating wire 108.

6 is a flowchart showing an example of a delay time and control operations mainly focused on the first switch 140 and the second switch 160. When the temperature of the set mattress 10 is exceeded, the power supply is naturally stopped. I did not include anything about it.

First, the delay time and the temperature are set (S1), and it is checked whether the first switch 140 and the second switch 160 are off (S2, S3). If all the switches 140 and 160 are off, the delay time is checked (S4) and the power supply is stopped when the delay time is exceeded (S5). When at least one of the switches is turned off (S7, S8) it is determined whether the power supply by checking the delay time.

Although the user does not use the mattress 10 as described above, even if any one of the switch is turned on by a predetermined object there is an advantage that can prevent the mattress 10 from overheating because the power is not supplied. .

As described above, according to the present invention, by installing a double safety device in the mattress, even when not in use, the power supplied to the heating wire is automatically cut off, thereby preventing the occurrence of fire due to overheating of the heating wire.

Since the weight acting on the first and second switching means can be arbitrarily set, power is not supplied at a small weight which cannot be regarded as being in use, thereby preventing power waste.

The delay time can be set even if the posture used on the mattress is disturbed, so there is an advantage in that it can rest at a desired temperature condition for a predetermined time.

Claims (4)

In the electric mattress equipped with a heating wire, Each switch group is connected to a plurality of switches connected in parallel are spaced apart from each other, the electric mattress with a double safety device, characterized in that the power is supplied to the heating wire when the switch group is all on (on) state. The method of claim 1, wherein each switch group, A first switching unit installed at a predetermined portion of an inner surface of the electric mattress and driven on or off depending on whether the upper body is pressed from the surface; And, An electric mattress with a double safety device, which is installed while maintaining a predetermined distance from the first switching unit, and is a second switching unit driven on or off according to the weight of the lower body pressed from the surface. The method of claim 2, wherein the interruption of the power supply, The switching signal supplied from the first switching unit and the second switching unit, and control means for controlling the power supply to the heating wire by determining whether there is another switching signal within a predetermined delay time when the switching signal is turned off. Electric mattress with double safety device. The method of claim 3, wherein the control means, A delay time setting unit for counting a set delay time; A temperature setting unit for setting a temperature by heat generation; And, A control unit which determines a switching signal of the first switching unit and the second switching unit and a count signal of the delay time setting unit and provides a control signal regarding whether power is supplied to the heating wire; Electric mattress with a double safety device characterized in that it is provided.