JPH0533606B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a cooking appliance for general household use.

BACKGROUND ART A conventional cooking device of this type has a structure as shown in FIG.

That is, the heat shield plate 1 is attached by hooking the hole portion 2 to the mounting piece 4 provided on the bottom 3 of the cooking device main body, and then screwing it to the fixing boss 6 provided on the upper part of the circuit chamber 5. Ta.

Problems to be Solved by the Invention However, in such a conventional configuration, when attaching the heat shield plate 1 to the bottom part 3 of the cooking appliance main body,
Since it is necessary to attach the screws to the mounting piece 4 and then tighten them with screws, there is a problem in that the number of man-hours increases.

An object of the present invention is to provide a cooking appliance that solves these problems.

Means for Solving the Problems In order to solve the above problems, the present invention provides mounting pieces facing each other at the bottom of the cooker main body, and a notch in the heat shield plate corresponding to the mounting pieces. Further, a boss is provided at the bottom of the mounting pieces located near one of the mounting pieces facing each other, and a hole is provided in the heat shield plate corresponding to the boss. The amount of contact between the other mounting piece and the heat shield plate is greater than the amount of contact between one of the nearby mounting pieces and the heat shield plate.

Effect According to the above configuration, when the heat shield plate is attached to the bottom of the cooking device main body, the other notch of the heat shield plate is hooked to the other mounting piece that is far from the boss, and then the heat shield plate is attached to the boss. If you press one notch of the heat shield plate against one of the mounting pieces while aligning the holes in the plate, the one notch will be pressed against the other mounting piece due to the bending of one of the mounting pieces, and the shield will be damaged. The hot plate is securely fixed to the bottom of the cooker body. Further, since the amount of engagement between the other mounting piece farther from the boss and the heat shield plate is made larger than the amount of engagement between one of the attachment pieces and the heat shield plate, the engagement will not come off due to a difference in thermal expansion.
Furthermore, although there is little overlap between one mounting piece and the notch in the heat shield, the boss at the bottom penetrates the hole in the heat shield near the one mounting piece, so even if heat is Even if it is added, the distance between the hole and one of the mounting pieces is small, and the difference in thermal expansion is also small, so the engagement between the two will not come off.

Embodiment Hereinafter, an embodiment of the present invention will be described based on FIGS. 1 to 3. In the figure, reference numeral 11 denotes a cylindrical cooking device body, and a top opening of this body 11 is provided with a lid 12 that can be opened and closed. 13 is an outer pot attached to the inside of the main body 1, 14 is a heating element provided at the bottom of the outer pot 13, and 15 is an inner pot detachably placed on the heating element 14. 16 is a sensor that comes into contact with the bottom of the inner pot 15 to detect the temperature. A bottom part 17 is fixed to the bottom of the cooking device main body 11, and a bottom board 18 is fixed to a circuit chamber 19 of the bottom part 17. 20 is a bottom substrate cover that covers the bottom substrate 18, and 21 is a heat shield plate that blocks heat from the heating element 14.

The heat shield plate 21 has one notch 21a connected to one mounting piece 1 provided on the bottom 17 of the cooking device main body 1.
7a, and the other notch 21b is hooked to the other mounting piece 17b, respectively, and the boss 1 is provided on the bottom 17 located near the one mounting piece 17a.
The heat shield plate 21 is attached to the bottom part 17 of the cooking device main body 1 by penetrating the holes 21c of the heat shield plate 21 through the holes 21c of the heat shield plate 7c.

Here, the linear expansion coefficient β of the bottom 17 of the cooking device main body 1 ₁₇ The linear expansion coefficient β of the heat shield plate 21 ₂₁ The distance L between the boss 17c of the bottom 17 and the tip of the other mounting piece 17b ₁₇ The boss 17c of the bottom 17 and one side Distance _l from the tip of _the mounting piece _17a of The relationship is that when trying to raise the temperature of the bottom part 17 and heat shield plate 21 from room temperature t ₀ to t by the heat of the heating element 14, L ₂₁ −L ₁₇ >L ₂₁ {1+(t−t ₀ )β ₂₁ } −L ₁₇ {1+(t−t ₀ )β ₁₇ } …(a) l ₂₁ −l ₁₇ ＞l ₂₁ {1+(t−t ₀ )β ₂₁ } −l ₁₇ {1+(t−t ₀ ) β ₁₇ } ...(b) must be satisfied.

Since the bottom part 17 is made of resin and the heat shield plate 21 is made of metal, β ₁₇ > β ₂₁ For example, if the bottom part 17 is made of polypropylene, β ₁₇ ≈4 (10 ^-5 /°C) If the heat shield plate 21 is made of iron, β ₂₁ ≒1.1 (10 ^-5 /°C), but L ₂₁ −L ₁₇ (the other notch 21b of the heat shield plate 21
Equation (a) can be easily satisfied by designing a large overlapping distance between the mounting piece 17b and the other mounting piece 17b.

Also, one notch 21a of the heat shield plate 21 is attached to one mounting piece 17a.
7a, so l ₂₁ −l ₁₇ (the amount of contact between one notch 21a of the heat shield plate 21 and one mounting piece 17a) cannot be designed to be large, but the area near one mounting piece 17a Since the boss 21c penetrates the hole 21c of the heat shield plate 21, the change in the engagement between one notch 21a of the heat shield plate 21 and one mounting piece 17a due to thermal expansion is extremely small; Equation (b) can be easily satisfied.

Effects of the Invention As described above, according to the present invention, the heat shield plate can be easily attached to the bottom of the cooker body without using screws, and each component can be heated by the heat of the heating element. Even if it expands thermally, it will not separate, and as a result, it is possible to provide a cooker with good workability and good stability after assembly.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of a main part of a cooking device showing an embodiment of the present invention, Fig. 2 is a sectional view of the main part, Fig. 3 is a cutaway side view of the same cooking device, and Fig. 4 is a conventional cooking device. It is an exploded perspective view of the main part of a container. 17...bottom, 17a...one mounting piece, 17
b...Other mounting piece, 17c...Boss, 18...
Bottom board, 19... Circuit room, 21... Heat shield plate, 21
a... One notch, 21b... The other notch, 21c... Hole.

Claims (1)

[Claims] 1. A circuit chamber for storing a bottom board equipped with electronic components is provided at the bottom of the cooker body, and mounting pieces facing each other are provided at the bottom, and notches are provided in the heat shield plate to correspond to the mounting pieces. Further, a boss is provided at the bottom of the mounting pieces located near one of the mounting pieces facing each other, and a hole is provided in the heat shield plate corresponding to the boss. A cooking appliance in which the amount of contact between one mounting piece and the heat shield plate is greater than the amount of contact between one of the nearby mounting pieces and the heat shield plate.