JPH0240906Y2 - - Google Patents

Description

[Detailed explanation of the idea]

Industrial Application Field The present invention relates to a heat-retaining device used to keep food, such as rice, warm. Conventional technology Temperature sensors are used in thermostats such as electronic jars to detect the temperature of the pot and control the energization of the heater. By doing so, the room temperature dependence of the temperature sensor is corrected. That is, with the above configuration, a portion of the lead wire is also affected by heat, and heat is prevented from flowing out from the sensor through the lead wire. Problems that the invention aims to solve By the way, in the past, a holding device such as adhesive tape or a nail was used to extend the lead wire over a certain length, and the lead wire was placed along the outer pot to achieve a predetermined purpose. The assembly work was troublesome and very time-consuming. The present invention takes into consideration the above-mentioned conventional problems and aims to provide a heat-retaining device in which a temperature sensor and lead wires can be easily assembled. Means for Solving the Problems The present invention consists of an outer pot equipped with a heater, an inner pot for storing objects to be kept warm that can be moved in and out of the outer pot, and a heater that detects the temperature of the inner pot. It is equipped with a temperature sensor that controls the energization, and a mounting base for attaching the temperature sensor to the outer pot, and the mounting base has a holding claw for drawing a lead wire led out from the temperature sensor in a U-shape. It is something. Function: With this configuration, the temperature dependence can be corrected without having to run the lead wire along the outer pot, making assembly easier. Embodiment The embodiment will be explained below based on FIGS. 1 to 3. The figure shows a jar rice cooker, in which a container body 2 whose upper part is opened and closed by a lid 1 includes an outer case 3, an outer pot 4 provided inside the outer case 3, and a space between the outer case 3 and the outer pot 4. It is made up of a heat insulating material 5. An inner pot 6 is detachably housed in the outer pot 4, and rice, which is an object to be kept warm, is placed in the inner pot 6. A rice cooking heater 7 is placed in contact with the outer bottom of the inner pot 6, and a rice cooker heater 7 is placed on the outer periphery of the upper portion of the outer pot 4.
A heat insulating heater 8 for heating the inner pot 6 is wrapped around the inner pot 6. Further, a temperature detection device 9 is attached to the outer pot 4 to detect the temperature of the inner pot 6 and control the heater energization. The temperature detection device 9 is constructed as shown in FIGS. 2 and 3. In other words, 10 is the outer pot 4
A heat-sensitive case is inserted through the hole, the tip of which touches the outer circumferential surface of the inner pot 6, and fixed by caulking its upper and lower projecting pieces 12 to the mounting plate 11 located on the outer circumferential surface side of the outer pot 4. has been done. Inside this heat-sensitive case 10, a temperature sensor 14 such as a thermistor covered with a protective tube 13 is installed in a presser 15.
It is held pressed through. Reference numeral 16 denotes a mounting base made of synthetic resin and is fixed to the outer peripheral surface of the outer pot 4 via a fixture 17. This fixing tool 17 penetrates the outer pot 4 from the inside to the outside, and is inserted into the hole 18 of the mounting base 16, and is fixed by press-fitting the push pin part 20 into the fixing cylinder 19 whose peripheral wall part is divided into a plurality of parts. The mount 16 is fixed to the outer pot 4 by expanding the peripheral wall of the cylinder 19, and the mount 11 equipped with the heat-sensitive case 10 and the temperature sensor 14 is fixed to the mount 16. The mounting base 16 has a pair of opposing holding claws 2.
Two sets of 1 are integrally formed in parallel. The lead wire 22 from the temperature sensor 14 is connected to this holding claw 21.
The lead wire 22 is reciprocated and locked so that the lead wire 22 forms a U-shape. A stopper 23 is crimped onto the lead wire 23 and touches the holding claw 21 to adjust the extension 25 of the lead wire 23. In the above configuration, the lead wire 23 extends 2
5, it is heated by the heat radiated from the outer pot 4 and the heat transmitted through the mount 16, and the so-called dependence of the temperature sensor 14 on changes in room temperature can be corrected. The table below shows actual measurement data dependent on room temperature.

[Table] According to the above table, according to the present example, it was possible to obtain room temperature dependence characteristics comparable to or higher than that of the case where the lead wire 23 was routed around the outer pot 4. Further, since the lead wire 23 does not need to be routed around the outer pot 4, assembly becomes easier. Effects of the invention As explained above, according to the invention, the dependence of the temperature sensor on room temperature changes can be corrected by heating the lead wires, increasing the heat retention effect, making it possible to create a sensor that is easy to assemble. It is possible to rationalize aspects.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view of a jar rice cooker according to an embodiment of the present invention, FIG. 2 is a perspective view of the essential parts of the jar rice cooker, and FIG. 3 is an exploded perspective view of the essential parts. 4...outer pot, 6...inner pot, 7...rice cooking heater,
14...Temperature sensor, 16...Mounting base, 21...
...Holding claw, 22...Lead wire.

Claims (1)

[Scope of utility model registration request] An outer pot equipped with a heater, an inner pot that can be moved in and out of the outer pot for storing items to be kept warm, a temperature sensor that detects the temperature of the inner pot and controls the energization of the heater, and this temperature sensor. A heat retaining appliance comprising a mounting base that is attached to an outer pot, a holding claw provided on the mounting base, and a lead wire led out from a temperature sensor being held in a U-shaped state by the holding claw.