JP2020192081A - rice cooker - Google Patents

Abstract

To provide a rice cooker whose appearance is hardly impaired.SOLUTION: A rice cooker 100 includes: "an inner pot 130," "an operation panel 117," "a shoulder member 111c having a main frame part Fr that forms an insertion port of the inner pot, and a panel frame part Ff arranged adjacent to the main frame part, in which the operation panel is placed on its upper side," and "a protective frame 111d having a flange part FP fastened to the lower side of the main frame part." The protective frame further includes a pair of support parts SU extending from the flange part to an operation panel arrangement side, and the support part is fastened to the lower side of the panel frame part.SELECTED DRAWING: Figure 6

Description

The present invention relates to a rice cooker.

In the past, "a rice cooker including a main body cover, a ratchet portion, and a protective frame" has been proposed (see, for example, Japanese Patent Application Laid-Open No. 2019-047872). In such a rice cooker, a flange is formed on the protective frame, and the deformation of the kata portion is suppressed by fastening the flange to the kata portion.

By the way, some rice cookers have an operation panel arranged on the upper side of the front portion of the Kata portion (see, for example, Japanese Patent Application Laid-Open No. 2007-000134).

Japanese Unexamined Patent Publication No. 2019-047872 JP-A-2007-000134

In the front part of the latter rice cooker, not only the operation panel but also parts such as a control board are arranged. For this reason, in the latter rice cooker, the front part of the kata portion is often relatively thin in order to secure as much space for accommodating parts as possible. However, if the rice cooker is made thinner, the rice cooker tends to warp or sag, and as a result, a gap or step is generated between the rice cooker and the operation panel, or the position of the operation panel is displaced in a relatively short period of time. The appearance of the rice cooker may be spoiled.

An object of the present invention is to provide a rice cooker whose appearance is not easily impaired.

The rice cooker according to the present invention
Inner pot and
Operation panel and
A shoulder member having a main frame portion forming the insertion port of the inner pot and a panel frame portion arranged adjacent to the main frame portion and on which the operation panel is placed on the upper side.
A protective frame having a flange portion to be fastened to the lower side of the main frame portion is provided.
The protective frame further has a pair of support portions extending from the flange portion toward the operation panel arrangement side in a plan view.
The support portion is fastened to the lower side of the panel frame portion.

According to the above configuration, even if the shoulder member has relatively low rigidity and is easily deformed, by fastening a protective frame made of a material having relatively high rigidity to the shoulder member, the shoulder member can be sagging or the like. Deformation can be suppressed. Further, the panel frame portion of the shoulder member is a portion that is easily deformed, but by fastening the support portion of the protective frame at that portion, the sagging of the panel frame portion is effectively suppressed. As a result, it is possible to suppress the formation of a gap between the shoulder member and the operation panel, and it is possible to prevent the appearance of the rice cooker from being spoiled.

In the present invention
A circuit board arranged under the operation panel and
A substrate support member for supporting the circuit board is further provided.
It is preferable that the substrate support member is fastened to the shoulder member together with the support portion in a state where a part of the substrate support member is located on the opposite side of the main frame portion from the support portion and faces the inner side surface of the panel frame portion. Is.

According to the above configuration, since the shoulder member, the protective frame, and the substrate support member are fastened together at the front part where deformation such as sagging is likely to occur, the shoulder member is deformed and the operation panel is operated. It is possible to suppress the formation of a gap between the shoulder member and the shoulder member.

In the present invention
It is preferable that the substrate support member has an overhanging rib that projects a portion of the panel frame portion on the opposite side of the main frame portion to the outside.

According to the above configuration, the overhanging rib makes it possible to apply tension to the portion of the panel frame portion on the opposite side of the main frame portion side, and it is possible to suppress the occurrence of poor appearance of the shoulder member.

It is a front view of the rice cooker which concerns on embodiment of this invention. FIG. 1 is a cross-sectional view taken along the line II of FIG. It is a partial cross-sectional view which cut only one side of the rice cooker which concerns on embodiment of this invention by line II-II of FIG. It is a left side view of the state which the side wall was removed from the housing of the main body of the rice cooker which concerns on embodiment of this invention. It is an upper perspective view of the state which the handle is inserted into the side wall which constitutes the rice cooker which concerns on embodiment of this invention. FIG. 5 is an upward exploded perspective view of an assembly including a shoulder member, a protective frame, and a substrate support member of a housing constituting the rice cooker according to the embodiment of the present invention. FIG. 5 is a downward exploded perspective view of an assembly including a shoulder member, a protective frame, and a substrate support member of a housing constituting the rice cooker according to the embodiment of the present invention. It is a plane contrast view of the protection frame constituting the rice cooker which concerns on embodiment of this invention, and the assembly of a shoulder member, protection frame, and an operation panel.

<Structure of Rice Cooker According to Embodiment of the Present Invention>
The rice cooker 100 according to the embodiment of the present invention is an induction heating type pressure rice cooker, and as shown in FIGS. 1 to 3, mainly the main body 110, the inner pot 130, the lid 140 and the hinge. It is composed of a mechanism 150. Hereinafter, these components will be described in detail.

1. 1. Main body As shown in FIGS. 1 to 3, the main body 110 mainly includes a housing 111, a handle 112, a heat insulating material (not shown), an induction heating coil 113, a ferrite core assembly 121, a thermistor 114, and a blower fan. It is composed of 115, a heat sink 116, an operation panel 117, a power supply circuit board 118, a control circuit board 119, and an automatic winding type power cord unit 120. Hereinafter, these components will be described in detail.

(1) Housing As shown in FIGS. 1 to 3, the housing 111 is mainly composed of a side wall 111a, a bottom wall 111b, a shoulder member 111c, a protective frame 111d, and a substrate support member 111e, and is heat-insulated. Contains materials (not shown), induction heating coil 113, ferrite core assembly 121, thermistor 114, blower fan 115, heat sink 116, power supply circuit board 118, control circuit board 119, self-winding power cord unit 120, etc. ing. Further, an operation panel 117 is arranged on the upper side of the front side of the shoulder member 111c. Hereinafter, each component of the housing 111 will be described in detail, and then the fastening structure of the shoulder member 111c, the protective frame 111d, and the substrate support member 111e will be described in detail.

The side wall 111a is an enclosure wall having a substantially rectangular shape in a plan view, and covers the side surface of the main body 110 as shown in FIGS. 1 and 2. Further, a handle 112 is rotatably attached to the side wall 111a as shown in FIG.

The bottom wall 111b is a substantially rectangular plate-like body, which is fitted under the side wall 111a as shown in FIGS. 1 and 2 and covers the opening under the side wall 111a. Then, as shown in FIG. 2, the bottom wall 111b has an intake port Os for sucking the air outside the housing 111 into the inside and an air intake port Os for discharging the air inside the housing 111 to the outside. An exhaust port (not shown) is formed. As shown in FIG. 2, a blower fan 115 is arranged directly above the intake port Os. When the blower fan 115 is driven, external air is sucked into the housing 111 through the intake port Os, and the heated air inside is discharged from the exhaust port to the outside of the system by the air flow generated thereby.

The shoulder member 111c is a substantially rectangular frame, which is fitted on the upper side of the side wall 111a as shown in FIGS. 1 and 2 and covers the edge of the opening on the upper side of the side wall 111a. Then, as shown in FIG. 2, a protective frame 111d is attached to the lower side of the shoulder member 111c. As shown in FIG. 2, the protective frame 111d is attached to the shoulder member 111c by the flange portion FP (described later), and the flange portion FP causes the shoulder member 111c to project outward.

The protective frame 111d is a member that protects the outer circumference of the inner pot 130 and holds the shape of the shoulder member 111c, and is made of a material such as polyethylene terephthalate (PET) resin that can easily maintain the shape. Then, as shown in FIGS. 2, 3 and 6 to 8, the protective frame 111d is mainly formed of the inner pot accommodating portion PA, the flange portion FP, and the support portion SU. The inner pot accommodating portion PA is a bowl-shaped portion that covers the outer circumference of the inner pot 130. As described above, the flange portion FP is arranged on the lower side of the shoulder member 111c, and the frame-shaped portion on the rear side of the shoulder member 111c is stretched outward to form the frame-shaped portion on the rear side of the shoulder member 111c. Holds the shape of. As shown in FIG. 8, the support portion SU is a portion extending from the flange portion FP toward the operation panel arrangement side, and the shoulder is formed by stretching the rear portion of the frame-shaped portion on the front side of the shoulder member 111c toward the outside. The shape of the rear part of the frame-shaped portion on the front side of the member 111c is maintained.

The substrate support member 111e is a member that supports the control circuit board 119 and also holds the shape of the front portion of the shoulder member 111c, and is formed of a material such as polyethylene terephthalate (PET) resin that easily retains the shape. ing.

(Fasting structure of shoulder member, protective frame and board support member)
As shown in FIGS. 6 and 7, when the shoulder member 111c, the protective frame 111d, and the substrate support member 111e are fitted together, the screw receiving column Cr of the shoulder member 111c passes through the screw penetration portion Pk of the substrate support member 111e. It reaches the screw receiving portion Pb of the protective frame 111d. Then, in this fitted state, the shoulder member 111c, the protective frame 111d, and the substrate support member 111e are fastened by screwing a screw (not shown) from the lower side of the screw receiving portion Pb of the protective frame 111d.

Hereinafter, for convenience of explaining the positional relationship of each part of the shoulder member 111c, the protective frame 111d, and the substrate support member 111e, a substantially half-moon-shaped frame provided on the front side of the shoulder member 111c as shown in FIGS. The shaped portion is referred to as a panel frame portion Ff, and the frame-shaped portion provided on the rear side of the shoulder member 111c, which is substantially square on the outside and circular on the inside, is referred to as the main frame portion Fr. As described above, the operation panel 117 is arranged on the upper side of the panel frame portion Ff, and the inner pot 130 is inserted through the opening of the main frame portion Fr (that is, this opening is the inner pot 130). It becomes the insertion port of.).

As is clear from FIG. 8, when the shoulder member 111c, the protective frame 111d, and the substrate support member 111e are fastened, the flange portion FP of the protective frame 111d is located below the main frame portion Fr, and the protective frame The support portions SU of 111d are located on both sides in the width direction on the main frame portion side of the panel frame portion Ff. That is, the flange portion FP of the protective frame 111d holds the shape of the main frame portion Fr of the shoulder member 111c, and the support portion SU holds the shape of the panel frame portion Ff of the shoulder member 111c on the main frame portion side. Further, as is clear from FIGS. 6 and 7, a part of the substrate support member 111e is located closer to the panel frame portion than the support portion SU of the protective frame 111d and faces the inner side surface of the panel frame portion Ff. In this state, it is fastened to the shoulder member 111c together with the support portion SU of the protective frame 111d. Further, the substrate support member 111e faces the front side portion of the panel frame portion Ff of the shoulder member 111c, and as shown in FIG. 6, the shoulder member 111c is provided with the overhanging rib Rb arranged on the front side. A portion on the front side of the panel frame portion Ff is projected to maintain the shape of that portion.

(2) Handle The handle 112 is a member provided for the user to carry the rice cooker 100 by hand, and is composed of a main body portion 112a and a shaft portion 112b as shown in FIG. The main body portion 112a has a substantially U-shape. The shaft portion 112b extends inward from both ends of the main body portion 112a as shown in FIGS. 3 and 5. In the rice cooker 100, the shaft portion 112b is formed in the protective frame 111d through the hole Px formed in the upper part of the center in the longitudinal direction of the side wall 111a, as shown in FIGS. 3 and 5. It is fitted to the fitting portion Cp.

(3) Insulation material The heat insulating material is wound around the side wall of the inner pot accommodating portion PA of the protective frame 111d and the outer periphery of the induction heating coil 113, and the heat generated from the inner pan 130 during rice cooking is generated outside the inner pot accommodating portion PA. It plays a role in suppressing the outflow to.

(4) Induction heating coil The induction heating coil 113 is an induction heating source for inductively heating the inner pot 130, and as shown in FIGS. 2 and 3, the bottom wall portion of the inner pot accommodating portion PA of the protective frame 111d and the bottom wall portion. It is arranged on the outside of the lower end of the side wall.

(5) Ferrite core assembly The ferrite core assembly 121 is arranged around the induction heating coil 113 as shown in FIGS. 3 and 4. The ferrite core plays a role of suppressing leakage of electromagnetic waves generated from the induction heating coil 113 when energized.

(6) Thermistor The thermistor 114 is a temperature sensor, and as shown in FIG. 2, faces upward through an opening formed in the central portion of the bottom wall portion of the inner pot accommodating portion PA of the protective frame 111d. Is protruding. The thermistor 114 is urged upward by an urging member such as a coil spring. That is, the thermistor 114 is in a state where it can freely appear and disappear along the vertical direction. Further, the thermistor 114 is incorporated in an inner pot detection sensor (not shown). The inner pot detection sensor is for determining whether or not the inner pot 130 exists in the rice cooker, and when the thermistor 114 is lowered to the lower end position, a detection signal is transmitted to the microcomputer of the control circuit board 119. To do. When the microcomputer receives the detection signal, it determines that the inner pot 130 exists in the rice cooker. If the microcomputer determines that the inner pot 130 does not exist in the rice cooker, the rice cooking operation is not started. By the way, the thermistor 114 is supported by a substantially disk-shaped cover member 127 as shown in FIG. The cover member 127 is screwed to the bottom wall of the inner pot accommodating portion PA of the protective frame 111d.

(7) Blower fan As described above, the blower fan 115 is arranged so that the rotation axis is substantially vertically along the intake port Os formed on the bottom wall 111b of the housing 111 (FIG. FIG. 2). That is, when the blower fan 115 is driven, the outside air is sucked from the intake port Os, flows into the housing, and is sent upward as it is. The external air sent upward is supplied to the power supply circuit board 118, the control circuit board 119, and the like through the heat sink 116 to cool the members and the like.

(8) Heat sink The heat sink 116 is a component that efficiently exchanges heat with external air.

(9) Operation panel The operation panel 117 is for determining and executing the operation method of the rice cooker 100, and as shown in FIGS. 1 to 3, mainly the panel main body 117a and the pressing button BT. And so on, and as described above, it is arranged above the panel frame portion Ff of the shoulder member 111c.

(10) Power Supply Circuit Board The power supply circuit board 118 is a board that constitutes a power supply circuit, and mounts some heat-generating components. As shown in FIG. 2, the power supply circuit board 118 is housed in the front space SPf of the housing 111 in the same manner as the control circuit board 119 described later.

(11) Control circuit board The control circuit board 119 is a board that constitutes a control circuit, and mounts electronic components such as a microcomputer. Then, as shown in FIG. 2, the control circuit board 119 is supported by the board support member 111e arranged above the heat sink 116 and below the operation panel 117 in the front space SPf of the housing 111. There is.

(12) Automatic winding type power cord unit The automatic winding type power cord unit 120 is composed of a power cord, an automatic winding mechanism (not shown), and the like, and is a housing 111 as shown in FIG. It is housed in the space on the rear side. The power cord consists of a plug (not shown) and an electrical wire (not shown). The plug is arranged at the tip of the electric wire. The electric wire is wound around an automatic winding mechanism so that it can be extended freely.

2. 2. Inner pot The inner pot 130 is a bowl-shaped pot that opens upward, is inserted through the opening of the shoulder member 111c, and is housed in the inner pot accommodating portion PA of the protective frame 111d with a predetermined gap. Here, the inner pot 130 is a multilayer body (clad material) of various aluminum alloys and stainless alloys, and can be induced and heated by the induction heating coil 113.

3. 3. Lid As shown in FIGS. 1 to 3, the lid 140 is mainly composed of an exterior body 141, an open / close button 142, a pressure adjusting mechanism 143, a reinforcing member 144, an inner lid 145, and a lever member 146. , It is rotatably attached to the main body 110 via the hinge mechanism 150.

As shown in FIGS. 1 and 2, the exterior body 141 is a substantially rectangular parallelepiped member, and houses an open / close button 142, a pressure adjusting mechanism 143, a lever member 146, and the like. Here, as shown in FIGS. 1 and 2, the open / close button 142 is arranged on the exterior body 141 so that the upper surface is exposed on the upper side of the exterior body 141. Further, here, the exterior body 141 is reinforced by a reinforcing member so as to be able to withstand the internal pressure during use. Further, an inner lid 145 is detachably arranged on the lower surface of the exterior body 141.

The open / close button 142 is a rectangular button with rounded corners for opening / closing the lid 140, and is arranged above the lever member 146. The open / close button 142 is urged upward by a coil spring (not shown).

The lever member 146 includes a contact plate portion (not shown), a pair of left and right extension plate portions (not shown) extending downward from the front side of the contact plate portion, and rearward from the lower portion of each extension plate portion. A metal plate member formed from a claw portion (not shown) extending toward the outside, which is pivotally supported by the exterior body 141 and is upwardly supported by a coil spring (not shown) at the rear end of the contact plate portion. Being urged towards. Here, when the open / close button 142 is pushed down by the user, the open / close button 142 comes into contact with a portion of the contact plate portion of the lever member 146 on the rear side of the rotation shaft.

Then, when the user intends to close the lid 140, the user does not need to operate the open / close button 142, and the lid 140 may be tilted toward the main body 110 as it is. At this time, the claw portion of the lever member 146 moves downward while contacting the inclined surface (not shown) formed on the shoulder member 111c. During this time, the lever member 146 rotates forward against the urging force of the coil spring. Then, when the claw portion reaches the claw receiving hole (not shown) formed in the shoulder member 111c, the claw portion is fitted into the claw receiving hole by the urging force of the coil spring. In this way, the lid 140 is closed. On the other hand, when the lid 140 is opened, the user pushes down the open / close button 142. Then, the lower end portion of the open / close button 142 abuts on the contact portion of the lever member 146, and the lever member 146 rotates forward against the urging force of the coil spring. At this time, the claw portion fitted in the claw receiving hole is pulled out from the claw receiving hole. Then, the lid 140 is lifted upward by the urging force of the hinge mechanism 150, and the lid 140 is opened.

The pressure adjusting mechanism 143 adjusts the pressure inside the inner pot 130 to 1.03 to 1.3 atm while the lid 140 is closed and the rice cooker is operated under pressure. Further, the pressure adjusting mechanism 143 regulates the rotation of the lever member 146 so that the lid 140 is not opened during the pressure rice cooking operation. In the present embodiment, the pressure adjusting mechanism is not particularly limited, and a conventional one may be adopted.

The reinforcing member is for increasing the strength of the lid 140. In the present embodiment, the reinforcing member is not particularly limited, and may be a metal plate itself or a metal plate having a complicated shape.

The inner lid 145 is a member for covering and sealing the upper part of the inner pot 130 as shown in FIG.

4. Hinge mechanism As described above, the hinge mechanism 150 attaches the lid 140 to the main body 110 so that the lid 140 is rotatable with respect to the main body 110. As described above, the hinge mechanism 150 urges the lid 140 toward the opening direction.

<Characteristics of Rice Cooker According to Embodiment of the Present Invention>
(1)
In the rice cooker 100 according to the embodiment of the present invention, the flange portion FP of the protective frame 111d stretches the main frame portion Fr of the shoulder member 111c toward the outside, thereby stretching the main frame portion Fr of the shoulder member 111c. The support portion SU of the protective frame 111d stretches the rear portion of the panel frame portion Ff of the shoulder member 111c toward the outside to maintain the shape of the rear portion of the panel frame portion Ff of the shoulder member 111c. Therefore, even if the shoulder member 111c has relatively low rigidity and is easily deformed, the deformation of the shoulder member 111c can be suppressed, and a gap or a step is generated between the shoulder member 111c and the operation panel 117. Not only can it be made difficult, but it is also possible to make it difficult for the operation panel 117 to be misaligned. Therefore, the appearance of the rice cooker 100 is not easily impaired.

(2)
In the rice cooker 100 according to the embodiment of the present invention, the substrate support member 111e faces the front portion of the panel frame portion Ff of the shoulder member 111c, and the shoulder member is provided by the overhanging rib Rb arranged on the front side. A portion on the front side of the panel frame portion Ff of 111c is projected to maintain the shape of that portion. Therefore, even if the portion of the shoulder member 111c on the front side of the panel frame portion Ff is relatively low in rigidity and easily deformed, the deformation of that portion can be suppressed, and the shoulder member 111c and the operation panel 117 It is possible to make it difficult for gaps and steps to occur between the two, and it is also possible to make it difficult for the operation panel 117 to be displaced. Therefore, the appearance of the rice cooker 100 is not easily impaired.

<Modification example>
(A)
In the rice cooker 100 according to the previous embodiment, the support portion SU of the protective frame 111d is a protrusion extending from both sides in the width direction on the tip end side of the flange portion FP toward the front, but the support portion has an arc shape. The support portion may play the same role as the substrate support member 111e.

(B)
In the rice cooker 100 according to the previous embodiment, the protective frame 111d and the substrate support member 111e are separate members, but the protective frame 111d and the substrate support member 111e may be integrally molded.

(C)
In the rice cooker 100 according to the above embodiment, the substrate support member 111e is sandwiched between the panel frame portion Fr of the shoulder member 111c and the support portion SU of the protection frame 111d, and the shoulder member 111c, the protection frame 111d and the substrate support member are sandwiched. Although the 111e is fastened together, the support portion SU of the protective frame 111d may be fastened to the panel frame portion Fr of the shoulder member 111c, and the substrate support member 111e may be fastened only to the panel frame portion Fr of the shoulder member 111c. ..

111c: Shoulder member 111d: Protective frame 111e: Board support member 117: Operation panel 119: Control circuit board (circuit board)
130: Inner pan Ff: Panel frame part Fr: Main frame part FP: Flange part SU: Support part Rb: Overhang rib

Claims (3)

Inner pot and
Operation panel and
A shoulder member having a main frame portion forming the insertion port of the inner pot and a panel frame portion arranged adjacent to the main frame portion and on which the operation panel is placed on the upper side.
A protective frame having a flange portion to be fastened to the lower side of the main frame portion is provided.
The protective frame further has a pair of support portions extending from the flange portion toward the operation panel arrangement side in a plan view.
The support portion is a rice cooker that is fastened to the lower side of the panel frame portion. A circuit board arranged under the operation panel and
The board supporting member for supporting the circuit board is further provided.
A claim that the substrate support member is fastened to the shoulder member together with the support portion in a state where a part of the substrate support member is located on the opposite side of the main frame portion from the support portion and faces the inner side surface of the panel frame portion. Item 1. The rice cooker according to item 1. The rice cooker according to claim 2, wherein the substrate support member has an overhanging rib that projects a portion of the panel frame portion opposite to the main frame portion side to the outside.

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