JPH11264A - Rice cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the constitution for fixing parts to the inside of an outer lid. SOLUTION: An inner lid shaft 21 for holding an inner lid 20 is fixed onto the lower surface of an outer lid 10 by an outer lid shaft 11 and a lid heater cover 31. Then, a through hole 21a for fixing a lid thermistor 40 is axially formed at the center of this inner lid shaft 21, and the lid thermistor 40 is inserted from the upside of through hole 21a on the linner lid shaft 21 through an O ring 41 and fixed on the inner wall of through hole 21a in the state of exposing its temperature detection part 40a at the lower end of inner lid shaft 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a rice cooker.

[0002]

2. Description of the Related Art There has been known a rice cooker having a lid thermistor for detecting a temperature in a pot inside an outer lid. Generally, such a rice cooker is provided with a lid heater for heat retention and heating, and is stored and held by being covered with a lid heater cover inside the outer lid. The lid heater cover is suspended and fixed to an outer lid shaft penetrating the outer lid. The lid thermistor is often housed in the lid heater cover, but there is also known a structure in which the temperature detection portion of the lid thermistor is exposed inside the shuttle in order to prevent a decrease in temperature detection accuracy.
In such a structure, the lid thermistor forming the rod-shaped temperature detecting portion is fixed by penetrating the thermistor fixing resin,
The resin for fixing the thermistor is fixed to the upper surface of the lid heater cover with packing therebetween, and the lower end of the lid thermistor is exposed from the cylindrical inner lid shaft attached to the lower surface of the lid heater cover.

[0003]

However, the above-described structure has a problem that the number of parts increases and the manufacturing cost increases. In addition, since the outer lid shaft is provided through the outer lid, not only is it necessary to prevent water from entering from outside, but also the exposed part of the outer lid shaft is painted when painting the outer surface of the outer lid. And there is a problem that the manufacturing cost is increased. An object of the rice cooker of the present invention is to solve the above-mentioned problem and to simplify a configuration for fixing components inside the outer lid.

[0004]

According to a first aspect of the present invention, there is provided a rice cooker comprising: a rice cooker for storing rice and water;
An outer trunk that houses the kettle, and an outer lid that covers the outer trunk,
An inner lid that covers the hook, an inner lid holding shaft that is inserted into the center hole of the inner lid to hold the inner lid inside the outer lid, and a temperature detection element that detects the temperature inside the kettle. In the rice cooker provided, a gist is to form a through-hole penetrating the center of the inner lid holding shaft in the axial direction, and to fix the temperature detecting element to an inner wall of the through-hole.

According to a second aspect of the present invention, there is provided a rice cooker comprising a fixing member for fixing the inner lid holding shaft to the outer lid. The gist is that it is fixed to the lower surface of the outer lid.

[0006] The rice cooker according to the first aspect of the present invention having the above configuration has an inner lid holding shaft that is inserted into the center hole of the inner lid and holds the inner lid inside the outer lid. A through hole is formed in the center of the inner lid holding shaft in the axial direction, and a temperature detecting element for detecting the temperature in the shuttle is fixed to the inner wall of the through hole. In this manner, not only the inner lid is held by the inner lid holding shaft, but also the temperature detecting element is fixed.

In the rice cooker according to the second aspect of the present invention having the above structure, a fixing member for fixing the inner cover holding shaft to the outer cover is fixed to the lower surface of the outer cover. Therefore, the fixing member is not exposed to the outer surface of the outer lid. Note that the fixing member is not limited to one component, and may be configured by two or more components.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to further clarify the structure and operation of the present invention described above, a preferred embodiment of the rice cooker of the present invention will be described below. FIG. 1 is a sectional view showing a configuration of a lid portion of a rice cooker as one embodiment of the present invention.
The lid portion of the rice cooker opens and closes an upper portion of an outer trunk (not shown) forming a side casing, and an inner lid 2 serving as a lid of a pot 1 is provided inside an outer lid 10 forming a top casing.
0 is detachably provided, and a lid heater 3 is provided for keeping heat.
A lid thermistor 40 for detecting 0 and the temperature in the pot is provided.

At the center of the lower surface of the outer lid 10, an outer lid shaft 11 having a male screw is fixed by welding. As shown in FIG. 2, the outer lid shaft 11 has a ring-shaped projection 11a formed on the contact surface with the lower surface of the outer lid 10 and is fixed by projection welding, so that the welding operation is simple and the strength is low. high. Then, the lid heater cover 31 having the packing 31 a on the outer edge and holding the lid heater 30 on the upper surface is tightened and fixed to the outer lid shaft 11 with the nut 12. Further, a resin inner lid shaft 21 for holding the inner lid 20 is screwed and fixed to the lid heater cover 31 with the O-ring 32 interposed therebetween. Thus, the inner lid shaft 21 is fixed to the lower surface of the outer lid 10 by the outer lid shaft 11 and the lid heater cover 31. A through hole 21 a for fixing the lid thermistor 40 is formed in the center of the inner lid shaft 21 in the axial direction. Then, the lid thermistor 40 is turned O from above the through hole 21 a of the inner lid shaft 21.
It is inserted through a ring 41 and its temperature detecting portion 40a
Is fixed to the inner wall of the through-hole 21a in a state where it is exposed at the lower end of the inner lid shaft 21. Further, the inner lid 20 is detachably held on the inner lid shaft 21. The inner lid 20 has an inner lid rubber 20a at the inner edge of a center hole formed at the center, and engages with the outer step portion 21b of the inner lid shaft 21 due to the elastic change of the inner lid rubber 20a.

Since the outer cover shaft 11 is fixed from the lower surface of the outer cover 10 in this manner, a hole is not made in the outer surface of the outer cover 10 so that a structure for sealing against water dropped on the outer surface of the outer cover 10 is required. Absent. Also, since there are no parts exposed outside the outer lid 10, the outer lid 10 can be easily painted,
Manufacturing costs can be reduced. Furthermore, the inner lid 20
By fixing the lid thermistor 40 to the inner lid shaft 21 for holding the lid, there is no need to provide a dedicated component for fixing the position of the lid thermistor 40, so that the number of components can be reduced. In addition, since the temperature detection portion of the lid thermistor 40 is exposed in the pot 1 to detect the temperature in the pot, the accuracy of temperature detection can be increased.

The embodiments of the present invention have been described above.
The present invention is not limited to these embodiments at all, and it goes without saying that the present invention can be implemented in various modes without departing from the gist of the present invention.

[0012]

As described in detail above, claim 1 of the present invention
According to the described rice cooker, by fixing the temperature detecting element to the inner lid holding shaft for holding the inner lid, there is no need to provide a dedicated component for fixing the position of the temperature detecting element,
The number of parts can be reduced and the manufacturing cost can be reduced. Also, the lower end of the inner lid holding shaft is exposed inside the shuttle,
By fixing the temperature detecting element to a through-hole that penetrates the inner lid holding shaft in the axial direction, the temperature inside the shuttle can be directly detected, so that the accuracy of temperature detection can be increased.

Further, according to the rice cooker according to the second aspect of the present invention, the fixing member is not exposed to the outer surface of the outer lid.
Since no hole is made in the outer lid, there is no need for a structure to seal against water from the outer surface of the outer lid, and since there are no parts exposed outside the outer lid, the outer lid can be easily painted and the manufacturing cost can be reduced. it can.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a configuration of a lid portion of a rice cooker as one embodiment.

FIG. 2 is a sectional view of an outer lid shaft.

[Explanation of symbols]

10: outer lid, 11: outer lid shaft, 20: inner lid, 21 ...
Inner lid shaft, 30: lid heater, 31: lid heater cover,
40 ... lid thermistor

Claims (2)

[Claims] 1. A pot for storing rice and water, an outer shell for storing the pot, an outer lid for closing the outer shell, an inner lid for closing the pot, and a center hole of the inner lid. A rice cooker provided with an inner lid holding shaft inserted through the inner lid and holding the inner lid inside the outer lid, and a temperature detecting element for detecting the temperature in the pot, wherein the center of the inner lid holding shaft is axially A rice cooker, wherein a through-hole penetrating the through-hole is formed, and the temperature detecting element is fixed to an inner wall of the through-hole. 2. A rice cooker comprising a fixing member for fixing the inner lid holding shaft to the outer lid, wherein the fixing member is fixed to a lower surface of the outer lid.