JPS6310872B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric carpet that can also be used with an electric kotatsu.

In this type of electric carpet, the heat generating area of the carpet body is divided into the periphery of the carpet body and at least the central part of the carpet body, so that when an electric kotatsu is used in conjunction with the carpet, only the periphery of the carpet body generates heat. Yes, it was recently developed by the applicant and has already been filed.

The purpose of the present invention is to conveniently supply power to an electric kotatsu that is used together with the electric kotatsu.
To provide an electric carpet which can surely cut off electricity to a heater that heats the central part of a carpet body when used in combination with an electric kotatsu, and which can be used safely.

The present invention will be described below with reference to an embodiment shown in the drawings.

In the figure, 1 indicates a required shape such as a square, rectangle, or circle (note that this example shows the case of a square).
This is the main body of the carpet. This main body 1 houses a heater, etc., which will be described later.Although not shown in the drawings, upper and lower cushioning materials coated with or impregnated with adhesive are laminated on the lining, with the heater etc. The raised outer fabrics are laminated, the whole is heated and pressed, and the periphery of these laminates is sewn, welded, or attached with edge material as the edge measure 1a.

The carpet body 1 has a first heater 2 built in, for example, over the entire periphery, and a first temperature sensor 3 is built in along the first heater 2. Furthermore, a second heater 4 is installed inside the carpet body 1 at least in the center thereof, and a second temperature sensor 5 is installed along the second heater 4. Incidentally, for convenience of explanation, the temperature sensors 3 and 5 are not shown in FIG. 2. In addition, the second heater 4 and the second temperature sensor 5 are connected to the heat source B when an electric kotatsu A such as an electric yagura kotatsu or an electric table kotatsu is placed on the carpet body 1 as shown in FIG. They are not limited to being directly under the kotatsu futon C, but are disposed approximately equally within the area kept warm by the kotatsu futon C, but a portion may be disposed at a corner of the carpet body 1 if necessary.

For the first heater 2 and the second heater 4, a heating wire, a surface heater, or the like (this embodiment shows the case of a heating wire) is used. Further, in the case of this embodiment, the first temperature sensor 3 and the second temperature sensor 5 are each formed by sandwiching a heat-sensitive semiconductor D having negative resistance characteristics such as nylon between a signal line E and a leakage current detection line F. However, the present invention is not limited to this, and a sheet-like structure may also be used. The heaters 2 and 4 and the temperature sensors 3 and 5 are arranged in a suitable pattern such as a meandering pattern.

In addition, 6 in the figure is a power supply device that can control the heat generation of each of the heaters 2 and 4, and includes a connector receiver 7 attached to the side or corner of the carpet body 1, and a connector 8 detachably connected to the connector receiver 7. It is formed to include a controller 9 connected to this connector 8 and a power plug 10 connected to this controller 9. Note that the connector 8 and the controller 9 may be integrated. The connector receiver 7 is the third
As shown in detail in Figs.
1. Outlet 12 and plug insertion blocker 1
It is equipped with 3rd class. That is, 14 is a connector receiving body made of synthetic resin or the like, which is provided with a concave connector connecting portion 15 into which the connector 8 is inserted and removed, and a pair of adjacent window holes 16 and 17.
Inside this connector receiving body 14, a switch 11 is installed, for example, at a position facing the window hole 16, and an outlet 11 is installed facing the window hole 17.
2 is installed inside. The switch 11 is for turning on and off the power to the second heater 4, and is a micro switch or the like, and the outlet 12 is connected to a plug (not shown) connected to the heat source B when the electric kotatsu A is used in combination. This is for supplying power to the heat source B. In addition, the connector receiving body 14
are provided with guide parts 19, 19, and the plug insertion prevention body 1 is inserted along these guide parts 19, 19.
3 is provided so as to be movable and operable. This blocking body 13
is made of synthetic resin or the like, for example, the operation part 13a and
It has an insertion prevention part 13b, an engaging part 13c and a groove part 13d that slidably engage with the guide part 19. The operation part 13a is housed in the window hole 16, and the insertion prevention part 13a is placed in the window hole 16 on the opposite side of the window hole 17.
b opens the window hole 17 and is located on the window hole 17 side of the window hole 16, and the insertion prevention part 13
b closes the window hole 17. In addition, 20 in FIG. 4 and FIG. 5 is for positioning and holding the plug insertion prevention body 13 in the window hole 17 open position, that is, the plug insertion possible position and the window hole 17 closed position, that is, the plug insertion prevention position. The mechanism is shown. This holding mechanism 20 includes a fulcrum portion 21 that is integrated with the connector receiving body 14, and a fulcrum portion 21 that is integrated with the connector receiving body 14.
A seesaw plate 22 that moves around the seesaw plate 1, and an engaging member 2 that engages and disengages from recesses provided at both ends of the seesaw plate 22.
3 and a biasing body 24 that always brings this member 23 into contact with the seesaw plate 22, and the engaging member 23 is supported by the plug insertion prevention body 13. In addition, 25 in the figure is a switch interlocking member provided as necessary, which slides on other guide portions 26, 26 provided on the connector receiver body 14.
It has an engaging protrusion 25a that is loosely fitted into the recessed groove 13d, and is adapted to be moved in conjunction with the plug insertion prevention body 13. Furthermore, this switch interlocking member 25 includes a switch interlocking part 25b and other switch interlocking parts 25 provided as necessary.
c, and the operating lever 11a of the switch 11 is engaged with the switch interlocking portion 25b. In addition, 27 in the figure indicates a sensor circuit changeover switch, which is provided as necessary, and
The operation section 27a is the other switch interlocking section 25 mentioned above.
It is arranged so as to be linked to c. Also, 1 in the figure
4a is a projecting wall provided integrally with the connector receiving body 14, and is connected to the switches 11, 27 and the outlet 12.
It is used to fit and support etc. On the other hand, the controller 9 is used to independently control the temperature of the peripheral and central portions of the carpet body 1 using signals from the temperature sensors 4 and 5, and is configured using, for example, an electric blanket. The configuration is the same, and includes a temperature control circuit as shown by X in FIG. 8 as an example. Note that Y in FIG. 8 is a circuit on the carpet body 1 side, and a brief explanation of the temperature control circuit X shown in FIG. 8 is as follows. That is, when the main switch 28 is turned on, the thyristor 29 becomes conductive, so that
Since the relay 30 operates and its relay contact 30a is closed, when the electric carpet is used alone, the first heater 2 is energized and the switch 1 is turned on.
The second heater 4 is also energized via the second heater 1 and starts generating heat, and the relay 30 is self-maintained. In this case, the current from the signal lines E and E of the first and second temperature sensors 3 and 5 makes the thyristor 29 conductive to maintain the heat generation of each heater 2 and 4, and when the set temperature is reached, each Temperature sensor 3, 5
Current leaks through the heat-sensitive semiconductor D to the leakage current detection lines F and F, thereby making the thyristor 29 non-conductive, releasing the self-holding of the relay 30, and stopping the heat generation of each heater 2 and 4. Thereafter, when the temperature falls below the set temperature, the main switch 28 remains closed, so that each heater 2, 4 resumes generating heat, and temperature control is performed by repeating this process. Further, when the electric kotatsu A is used in combination, the switch 11 is opened and the sensor circuit changeover switch 27 is switched and the second temperature sensor 5 does not detect leakage current, so only the first heater 2 is activated. As the electricity is applied and heat is generated, the control circuit
controls the heat generation of the first heater 2 as described above.

Next, the operation of the electric carpet having the above structure will be explained. When using the electric carpet alone, first, manually move the plug insertion prevention member 13 via its operation part 13a to position it so that the insertion prevention part 13b closes the window hole 17. The state is such that the plug is prevented from being inserted into the outlet 12. Then, as the plug insertion prevention body 13 moves at this time, the switch 11 is closed via the switch interlocking member 25, and the sensor circuit changeover switch 27 is also operated. , 4 can be energized, and both the first and second temperature sensors 3 and 5 can detect leakage current.
Thereafter, by turning on the main switch 28, each of the heaters 2 and 4 generates heat to heat the entire area of the carpet body 1, so that the carpet can be used normally as an electric carpet. In this case, heat generation is controlled by each temperature sensor 3, 5.
Of course, this is done by turning on and off the power to each of the heaters 2 and 4 by the controller 9 based on the detection. Even if power is supplied to various electrical devices using the outlet 12 during this use, the plug insertion prevention portion 13 of the plug insertion prevention body 13
b prevents the plug from being inserted into the outlet 12, making it safe to use. In this embodiment, since the plug-in blocking portion 13b completely covers the outlet 12, there is an advantage that dust and the like can be prevented from entering the outlet 12.

In addition, when the electric kotatsu A is placed on the carpet main body 1 and used together with the electric kotatsu A, first manually move the plug insertion prevention body 13 via its operation part 13a, and then move the plug insertion prevention body 13 manually. 13b is positioned so as to open the window hole 17. Then, plug insertion prevention body 1 at that time
As the switch 3 moves, the switch 11 is opened via the switch interlocking member 25, and the sensor circuit changeover switch 27 is also operated. Only sensor 3 is in a state where it can detect leakage current. In this state, connect the electric kotatsu A by plugging it into the socket 12 facing the window hole 17.
While energizing the heat source B of the electric kotatsu A, the main switch 28 is turned on to heat only the peripheral portion of the carpet body 1 by the first heater 2. That is, in this state of use, the heat generated by the first heater 2 warms the buttocks of the user, which are located substantially outside the electric kotatsu A, and the electric kotatsu A warms the user's legs. Of course, the temperature control of the electric carpet in this case is performed by the signal current from the first temperature sensor 3, and the second temperature sensor 5 disposed at the center of the carpet body 1 heated by the electric kotatsu A. Since the sensor 5 is in a state where leakage current cannot be detected, the temperature control of the first heater 2 is not affected by the sensor 5.

As described above, when the plug insertion blocking body 13 is moved to enable the plug to be inserted into the outlet 12, the power to the second heater 4 is automatically cut off, and the plug is not inserted into the outlet 12. When the plug insertion blocking body 13 is moved to prevent this, the second heater 4 can be automatically energized. For this reason, there are problems in which the second heater 4 generates heat when the electric kotatsu A is used in combination, and
It is possible to prevent problems such as the temperature control of the first heater 2 being influenced by the heat generated by the electric kotatsu A via the temperature sensor 5. In addition, by providing the power outlet 12 in the power supply device 6, when an electric kotatsu A is used in combination, there is no need to find a power outlet for the electric kotatsu A separately from the power outlet for the electric carpet. It is extremely convenient for power supply because there is no electricity.

In addition, in the above embodiment, the plug insertion prevention body 1
Although the movement of 3 and the opening and closing of the switch 11 were indirectly linked via the switch linking member 25,
It is also possible to omit such an intermediate member and perform linear interlocking.

Further, although the plug insertion blocking body is moved laterally in the above embodiment, it may be moved vertically or rotated. Furthermore, the insertion prevention part 13b of the plug insertion prevention body
It is not necessary to completely cover the socket 12,
In short, any structure or shape may be used as long as it prevents or allows insertion of the plug into the socket 12. For example, it may be rod-shaped or plate-shaped, and does not necessarily need to be disposed on the front side of the socket 12.

Moreover, in the above-mentioned embodiment, the plug insertion preventing body is manually moved to prevent the plug from being inserted or to a position where the plug can be inserted, but the plug insertion preventing body is always prevented from being inserted by a spring or the like. The plug may be biased in the positional direction to enable insertion of the plug, and may be manually moved only when the second heater is to be turned off.

Further, in the above embodiment, the switch 11, the socket 12, the plug insertion blocker 13, etc. are provided in the outlet receptacle 7, but these may be provided in the controller 9.

In addition, in carrying out the present invention, unless it is contrary to the gist of the invention, the carpet main body, first heater, first temperature sensor, second heater, second temperature sensor, power supply device, switch, outlet, plug insertion blocker, etc. It goes without saying that the specific structure, shape, position, etc., are not limited to the one embodiment described above, and can be implemented in various configurations.

As described above, the present invention provides an electric carpet in which power can be conveniently supplied to the electric kotatsu since the power supply device is provided with an outlet and power is supplied to the electric kotatsu via the outlet.

The power feeding device is provided with a movably operable plug insertion blocking body that enables or disables the insertion of the plug into the outlet, and in conjunction with this movement, a second plug that heats at least the central portion of the carpet body. Since the switch for energizing and disconnecting the heater is opened and closed, the energization to the second heater is inevitably stopped when the electric kotatsu is used together, and it is possible to prevent the second heater from being used incorrectly to generate heat when the electric kotatsu is used together.

Furthermore, since the plug insertion blocking body prevents other electrical equipment from being plugged into the outlet during normal use, it is safe and the state of single use as an electric carpet is not inadvertently impaired.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a schematic sectional view when used in combination with an electric kotatsu, Fig. 2 is a schematic plan view with a part cut away, and Fig. 3 is an enlarged perspective view of the middle part of Fig. 2. , FIG. 4 is an enlarged sectional view along the line - in FIG. 3, and FIGS. 5 to 7 are respectively taken along the line - in FIG. 4.
8 is an electrical circuit diagram. 1... Carpet main body, 2... First heater, 3
...First temperature sensor, 4...Second heater, 5...
2nd temperature sensor, 6...Power supply device, 7...Connector receiver, 8...Connector, 9...Controller, 1
0...Power plug, 11...Switch, 12...
Outlet, 13...Plug insertion prevention body.

Claims (1)

[Claims] 1 A carpet main body, a first heater installed in the periphery of the main body, a first temperature sensor disposed along the first heater, a second heater installed in at least the center of the carpet main body, and a second temperature sensor installed along the heater. It consists of a second temperature sensor arranged along the
The power supply device is provided with a switch that turns on and off the power to the second heater, an outlet that supplies power to the heat source of this kotatsu when used in conjunction with an electric kotatsu, and is movably provided and opens and closes the switch by its movement. An electric carpet characterized in that it is formed with a plug insertion blocking body that prevents insertion of a plug into the outlet when the switch is closed.