JPS6032280A - Cloth heat collecting implement - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a cloth-like warming device.

Conventional Structure and Problems Conventionally, cloth-like warming devices such as electric blankets that use temperature-sensitive elements whose characteristics change when dry-cleaned have only been labeled as prohibiting dry-cleaning. However, cloth-like heating devices such as electric blankets are often dry-cleaned and then used as electric blankets around the neck. As a result, the control temperature for heating the fabric using the IUF element will naturally change, and there is a risk that the controlled aI temperature will become high and cause burns.

FIG. 1 shows the structure of an electric blanket, which is an example of a conventional cloth-like warming device.

Reference numeral 1 denotes a cloth main body', and a string-like heater 2 is disposed on the cloth main body 1. 3 connects a cord 4 extending from the controller 5 and a string-shaped heater 2 disposed on the cloth body 1. 6 is a power cord.

A fourteenth configuration of the string-shaped heater 2 is shown in FIG. 7 is a core thread, 8 is a temperature sensing electrode wire wound around the acid-filled core thread 7, and 9 is a temperature sensing element interposed between it and the heating element 10.

Reference numeral 11 is an outer sheath that provides insulation. This outer cover 11 does not have the ability to block the dry cleaning liquid, and the dry cleaning liquid melts the 471 barbs of the element 9 and changes the characteristics of the temperature sensing element 9.

FIG. 3 shows changes in the characteristics of the temperature sensing element 9 during cleaning f]
By cleaning in this way, the impedance increases by 2. This can be seen by assuming that the same impedance and temperature change from T1 to T2 by -1-11. In other words, is the control temperature higher by (T2-T1)? -1. This indicates "1!", which includes the risk of burns etc. due to dry cleaning.

Purpose of the invention No. 1 is to eliminate such conventional problems, and the dry-cleaned cloth heating device stops functioning as a heating device, is twisted, stops energizing the heating element, and is actively used. The first objective is to ensure safety.

8I] Structure In order to achieve this purpose, it is completely finished! Ii is provided with a dry cleaning detection section that detects whether or not dry cleaning has been performed, and a safety circuit that operates based on a signal from the dry cleaning detection section.

With this configuration, during dry cleaning, the dry cleaning detection section outputs a signal, and upon receiving the signal, the safety circuit can operate as desired and cut off the electricity to the heating element.

DESCRIPTION OF THE EMBODIMENT +yil Now, the first embodiment will be explained according to FIGS. 4 to 8. The same parts as in FIGS. 1 and 2 are the same parts.

FIG. 4 shows an yPI diagram of one embodiment of the first embodiment.

17 is an 11 degree fuse used as a safety circuit thermally coupled to the resistor 23. When the resistor 23 generates heat, the temperature fuse 17 melts, cutting off the power supply vAC and the circuit. The diode 18, resistor 19, and capacitor 20 constitute a control power source. The power control element 21 is connected in series with the heating element 10 and turns on and off. resistance, ft
is the gate resistance.

26 is a temperature detection transistor whose base is grounded. The transistor 26 is conductive when the power control element 21 is turned off, and a current flows through the base, emitter, resistor 23, temperature sensing electrode wire 8, temperature sensing element 9, and heating element 10, and the temperature sensing element 9 is turned on. The temperature detection current is determined by the impedance. A resistor 27 and a capacitor 28 connected to the collector of the transistor 26 convert the temperature sensing current into a voltage and generate a temperature sensing voltage across the capacitor 28. 25 is a base and emitter reverse voltage suppression diode of the transistor 26, and the transistor 26 and the resistor 27
, and the capacitor 28 constitute the ilA degree detection circuit 24.

The temperature detection voltage obtained by the temperature detection circuit 24 is input to the temperature control section 20a to control the power control element 21. The diode 29.3° is a diode for compensating for an open fault between the base and emitter of the transistor 26, and
When the dry cleaning detection section 31 housed at one end and one end of the temperature detection electrode wire 8 is operating, that is, when the switch section 320 in the circuit diagram is on, a large current flows through the resistor 23 when the power control element 21 is non-conducting. .

In order to ensure that the large current flows at this time, the Guio 129.3
0 is connected.

In this circuit, the resistor 23 may cause abnormal overheating of the heating element 10 due to a failure of the power control element 21, etc.
The impedance of element 9 may drop, or the temperature of element 9 may decrease.
Even if the heating element 10 and dl are short-circuited and the sensing electrode wire is short-circuited once, a large current flows through the resistor 23.
Fuse the fuse 17 once. This circuit combines the two effects of preventing use after dry cleaning and preventing abnormal overheating of the heating element 10 with a single resistor 23.

Alternatively, as shown in FIG. 5, the dry cleaning detection section 31 may be formed of a series circuit of a switch section 32 and a resistor 33 thermally coupled to the temperature fuse 17.

6 to 8, the +1°4 configuration of the switch section 32 of the dry cleaning detecting section 31 and its operation will be explained.

FIG. 6 shows an example of the switch section 32.

This example shows a switch section 32 of a dry cleaning detection section 31 provided in a connector 3 housed in a cloth body 1. 12 is a heating element electrode of the heating element 10, and 13 is a melting part made of, for example, styrene, polyolefin, or a copolymer thereof, which is melted by the temperature sensing type of the temperature sensing electrode wire 8.

Reference numeral 15 designates a fulcrum portion of a /ζi+J moving piece 16 made of a highly conductive 1'+4,1 material having spring properties. The operation will be explained with reference to FIG. FIG. 7a shows a dry cleaning snow heating element electrode 12, a temperature detection electrode wire electrode 13, and a melting part 14.
, support part 15, part of movable J=i' 16 1JIE
Figure 7 is a diagram after dry cleaning. Since the movable piece 16 has equal spring properties, the movable piece 16 uses the support part 15 as a fulcrum and pushes the melting part 14 with a force F toward the heating element electrode 12 and the temperature sensing electrode line electrode 13. When dry cleaning is performed, the melted portion 14 melts and disappears, so the 1" section 16 moves and the heating element electrode 1
2 and the electric AJj wire electric rod 13 are reliably electrically connected.

However, the dissolving part 14 and the supporting part 15 may be formed into a two-stage cylindrical shape as shown in FIGS. 8a and 8b so that the IJJ' moving piece 16 does not come off.

The cloth-like heating device described in [Failure of Effects of Invention] has a dry cleaning part that detects dry cleaning and a safety circuit that operates based on the feedback from the dry cleaning detection part, so it can be used after dry cleaning. When the power is turned on, the safety circuit is
7. Cut off the power supply and heating element. Therefore,
This helps to prevent the risk of burns and the like due to the use of cloth-like warming devices that have temperature-sensitive elements whose characteristics have changed due to dry cleaning.

[Brief explanation of the drawing]

Figure 1 is a 1+11□ composition diagram of a conventional cloth-like heating device, Figure 2 is a front view of the same string-shaped heater, Figure 3 is a temperature-impedance characteristic diagram of the same 16W+i' element, and Figure 4 Fig. 5 is a circuit diagram of the embodiment of the present invention 1, and Fig. 6 is a portion of the switch section in the dry cleaning detection section of the cloth-like warming device.
A cutaway perspective view, FIGS. 7a and 7b are front views of the operation of the switch section in the dry cleaning detection section of the same fabric 4; 111, and FIGS. 8 a and b are front views of the switch section in the same dry cleaning detection section. FIG. 1 is a front view and a side view of another actual Mfj example of the section. 1... Cloth body, 8... Temperature detection type 41
9< wire, 9... Heating element, 10... Temperature sensing element, 17... Fuku, 1 degree, - part (Security circuit l1
18), 21... power control element, 23...
・Resistance, 24...Temperature detection circuit, 31...
- Dry cleaning detection section, 32...switch section. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure/θ Figure 3 (Figure 4, Figure 5, Figure 6, Figure 7, Figure 8 (aJ

Claims (3)

[Claims] (1) A series circuit of a heating element and a power control element connected to a power supply via a safety circuit that turns off the current when a signal is received, and a series circuit of a heating element and a temperature sensing electrode wire in the vicinity of IfJ. a temperature detection circuit that detects the temperature of the heating element using the temperature sensing element, a temperature control section that uses the output of the temperature detection circuit as an input to control the trigger input to the power control element; A cloth-like heating device comprising a dry cleaning detection section that outputs a reliability signal to the safety circuit during later use. (2) The safety circuit consists of a temperature fuse.
'ii? + Cloth-like warming device described in item 1 of the scope of demand. vinegar (3) Dry Cleaning Detection Unit Consisting of a switch unit and a resistor, the switch unit is disposed on the cloth body and shorts one end of the heating element and one end of the temperature sensing electrode wire during dry cleaning to activate the security circuit. The scope of the patent claim is a structure in which a large current flows through a resistor that is thermally coupled to the resistor. i′: Cloth-like warming device described in item 1, ox, or 2. (brown dry cleaning detection part is switch part and 11 (
The switch portion is disposed on the cloth body and is configured to short-circuit one end of the heating element and one end of the temperature sensing electrode wire through the resistor thermally coupled to the safety circuit during dry cleaning. , Claim 2 (1) with a +4 configuration, Section 2j.