JP7356037B2 - pressure rice cooker - Google Patents

Description

The present invention relates to pressure rice cooker technology.

As a conventional technology related to pressure-type rice cookers, for example, Japanese Patent Application Laid-open No. 2017-42542 (Patent Document 1) states, ``A pressure-type rice cooker consists of a rice cooker body, a pot for storing food, and a rice cooker body. A protective frame provided inside to store the pot, an upper frame provided to cover between the upper opening of the protective frame and the upper opening of the rice cooker body in plan view, and an upper rear portion of the upper frame. The lid body is rotatably attached to the hinge part and covers the top opening of the rice cooker main body in a freely openable and closable manner by rotating around the hinge part. This is a pressure rice cooker that cooks rice under pressure, and includes a hinge reinforcing member for reinforcing the hinge part, and a hinge reinforcing member that extends along the inner surface of the upper frame from the hinge reinforcing member to the protective frame, and the upper frame is and an upper frame reinforcing member for reinforcing the upper frame."

JP 2014-223163A (Patent Document 2) states, ``The main body includes a vacuum container having a substantially cylindrical shape and made of an electrically conductive material with openings at the top and bottom, and a lower opening at the bottom of the vacuum container. It is equipped with a bottom container that almost closes the vacuum container, an inner pot that is removably stored through the upper opening above the vacuum container, a lid that covers the main body and the top of the inner pot, and a lid provided on the bottom side of the bottom container. It is equipped with a heating coil that heats the inner pot, a control means that controls the energization of the heating coil, a power cord equipped with a ground wire that supplies power from the outside to the control means, and a power cord that is connected to the ground wire on the vacuum container. A ground wire connecting fitting made of an electrically conductive material and having a plurality of connecting parts is welded and provided.''

JP 2013-235712A (Patent Document 3) states, ``The electrical product according to the present invention includes a non-charged metal part, a claw part, and a ground wire. A certain part, for example, an exterior part, a part exposed when the lid is opened, etc.The claw part is made of non-charged metal and protrudes from the non-charged metal part.The ground wire is It is disclosed that "the blade is connected to the claw part."

JP-A No. 7-265200 (Patent Document 4) states, ``The present invention provides a rice cooker with a grounding structure for an electrical system including a rice cooking heater and a heat-retaining heater provided in the main body. It is disclosed that a rice cooker is constructed in which a part of the conductive members of the electric parts are pressed together to form a ground connection of a ground structure.

JP-A-5-33610 (Patent Document 5) states, ``An integrally formed wear-resistant member is cast into the end pivot portion of the arm body, the valve contact portion, and a pair of arm portions. This significantly improves the wear resistance of the sliding contact surfaces of the pivot, engine valve, and roller fitted to the cylinder head.Therefore, even if the arm body is made of light alloy material, there will be no problems in terms of wear resistance. The rocker arm can be made lighter and the permissible engine speed can be increased.''

JP2017-42542A Japanese Patent Application Publication No. 2014-223163 Japanese Patent Application Publication No. 2013-235712 Japanese Patent Application Publication No. 7-265200 Japanese Patent Application Publication No. 5-33610

An object of the present invention is to efficiently ground each part of a pressure rice cooker.

One aspect of the present invention includes a lid body and a main body, and the main body is arranged on the back side of the main body, includes a back metal fitting for resisting pressure applied during rice cooking, and is connected to the ground via the back metal fitting. A pressure rice cooker is provided, which is configured as follows.

According to the above configuration, since the back metal fitting is grounded through the back metal fitting, the back metal fitting can be used for two purposes: for strength and grounding, and the number of parts of the pressure rice cooker can be reduced.

Preferably, the rear metal fitting is formed with a tab that enables fast connection as a connection part with the wiring.

According to the above configuration, since the shape of the connecting portion can be made thin, the space on the back side of the pressure rice cooker can be saved.

Preferably, the back metal fitting has a first connection part to which a grounding wire is connected, and a plurality of second connection parts to which wiring to each part is connected.

According to the above configuration, it is possible to reduce the possibility of connecting a plurality of wirings to one connection part or branching them out, so that assembly can be facilitated.

Preferably, the back metal fitting has a first connection part to which a grounding wire is connected, and second connection parts whose number is equal to or greater than the number of wires connected to each part.

According to the above configuration, one wiring can be connected to one connection part, so assembly can be facilitated.

Preferably, the lid includes a control board. The back metal fitting is attached at a position that avoids cables for connecting the control board and various parts on the main body side when viewed from the back.

According to the above configuration, interference with the cable can be prevented.

Preferably, the rear fitting includes two fittings, and the cable is disposed between the two fittings.

According to the above configuration, interference with the cable can be prevented.

Preferably, the upper end of the back metal fitting is fixed to the upper part of the main body, the lower end thereof is fixed to the lower part of the main body, and the center part is positioned with respect to the back of the main body.

According to the above configuration, the back metal fitting can be easily positioned during assembly, and the back metal fitting can be stably fixed during use.

It is a side view of the rice cooker concerning this embodiment. FIG. 2 is a side view of the rice cooker according to the present embodiment with the side cover of the main body removed. FIG. 2 is a rear view of the rice cooker according to the present embodiment with the side cover of the main body removed. 4 is a sectional view taken along line AA in FIG. 3. FIG. FIG. 3 is a bottom view of the bottom heat shield plate according to the present embodiment. FIG. 3 is a rear view of the power supply board according to the present embodiment. FIG. 3 is a rear view of the heat sink according to the present embodiment. It is a front perspective view of the back metal fitting concerning this embodiment. FIG. 2 is a rear view of the rice cooker with the FFC cable attached and the side cover removed from the main body according to the present embodiment. It is a back view of the rice cooker in a state in which the side cover of the main body according to the third embodiment is removed.

Embodiments of the present invention will be described below with reference to the drawings. In the following description, the same parts are given the same reference numerals. Their names and functions are also the same. Therefore, detailed descriptions thereof will not be repeated.
[First embodiment]
<Overall structure of rice cooker>

First, the overall structure of a rice cooker 100 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4. Note that, hereinafter, the left side of the page in FIG. 1 will be referred to as the front or front side of the rice cooker 100, the right side of the page in FIG. 1 will be referred to as the back or rear side of the rice cooker 100, and the front side of the page in FIG. 100, the back side of the paper in FIG. 1 is called the right side of the rice cooker 100, the upper side of the paper in FIG. 1 is called the upper side of the rice cooker 100, and the lower side of the paper in FIG. It is called the side.

The rice cooker 100 according to the present embodiment includes a main body 110 and a lid 120. The main body 110 and the lid 120 are configured to be openable and closable by a hinge 140. An inner pot 130 is housed in the main body 110 and can be taken out from above.

In this embodiment, the main body 110 mainly includes a side cover 111, a shoulder member 112, a protection frame 113, an induction heating coil 114, back metal fittings 150L, 150R, and the like. The main body 110 also includes a bottom heat shield plate 116 shown in FIG. 5, a power supply board 117 shown in FIG. 6, and the like. The main body 110 also includes various other members used in a normal pressure rice cooker, such as a heat insulating material, an induction heating coil, a ferrite core assembly, a thermistor, and a power cord. Any configuration can be used, and there is no particular limitation, and the description will not be repeated here.

Further, the lid body 120 mainly includes a top cover 121, an inner lid 122, an operation panel 123, a control circuit board 124, and the like. The lid 120 also includes a heat sink 125 shown in FIG. 7 and the like. The lid body 120 includes various other members used in normal pressure rice cookers, such as a blower fan and a pressure adjustment mechanism, but any known configuration can be used, and there are no particular limitations. It's not a thing, so I won't repeat the explanation here.

Since the rice cooker 100 according to the present embodiment is provided with an operation panel 123 and a control circuit board 124 on the lid 120, the control circuit board 124 of the lid 120 and the power supply board 117 of the main body 110 and other An FFC (Flexible Flat Cable) cable (see FIG. 9) for connecting the control target member is connected from the lid 120 to the main body 110 through the vicinity of the hinge 140 on the back side of the rice cooker 100.

Referring to FIGS. 1 and 4, rice cooker 100 according to the present embodiment is an induction heating pressure rice cooker. In other words, when cooking rice, a large force is applied to the lid 120 to try to open it upward due to steam pressure. More specifically, when pressure cooking is performed, the rice cooking space surrounded between the inside of the inner pot 130 and the bottom surface of the lid body 120 is in a pressurized state where steam pressure increases the pressure to exceed atmospheric pressure. As a result, a force is applied to the main body 110 in a direction in which the lid 120 tends to be lifted.

Therefore, the front side of the lid body 120 is configured so that it does not separate from the locking member at the front part of the main body 110 by a stopper 126 (see FIG. 7) during pressure cooking. Note that the stopper structure on the front side of the lid body 120 can utilize a known structure and is not particularly limited, and the description thereof will not be repeated here.

Regarding the rear side of the lid 120, during pressure cooking, the shoulder member 112 and the protective frame 113 are lifted upwards via the hinge 140 due to the force of the lid 120 lifting against the main body 110. It will be done. In order to resist this force, rear metal fittings 150L and 150R are attached to the rear part of the main body 110. More specifically, the lower parts of the back metal fittings 150L and 150R are directly or indirectly fixed to the lower part of the main body 110, and the upper parts are directly or indirectly fixed to the base or protection of the shoulder member 112 or the hinge 140. It is connected to the upper part of the frame 113. In this way, the hinge 140, the shoulder member 112, and the protective frame 113 are prevented from being lifted or damaged.
<Grounding structure of rice cooker>

Particularly regarding the rice cooker 100 according to the present embodiment, as shown in FIG. 3, each part of the rice cooker 100 is configured to be grounded via the back metal fitting 150L.

As shown in FIGS. 3 and 8, in this embodiment, two vertically elongated plate-shaped rear metal fittings 150L and 150R are attached to the back side of the main body 110 as the rear metal fitting 150. The back metal fitting 150L is fixed to the left side of the center of the main body 110 in the left and right directions when viewed from the back. The back metal fitting 150R is fixedly installed on the right side of the center of the main body 110 in the left and right directions when viewed from the back. The FFC cable 170 is preferably passed between the left back metal fitting 150L and the right back metal fitting 150R so as not to interfere with the back metal fittings 150L and 150R.

A tab 150A is formed at the bottom of the rear metal fitting 150L toward the left side so that a faston terminal 161 of a ground inlet wiring 160 can be connected thereto.

The rear metal fitting 150L has tabs 150B, 150C, and 150D formed above and toward the left side of the tab 150A so that the faston terminals 161 of the wirings 160B, 160C, and 160D directed to each part of the rice cooker 100 can be connected. Ru. For example, starting from the bottom, the other end of the wiring 160B is connected to the bottom heat shield plate 116 of the main body 110. The other end of the wiring 160C is connected to the power supply board 117. The other end of the wiring 160D is connected to the heat sink 125 inside the lid 120.

In this embodiment, since the configuration is such that three boards, units, parts, etc. of the rice cooker 100 are grounded, three wirings 160B, 160C, 160D directed to each part of the rice cooker 100 are connected to the rear metal fitting 150L. Three tabs 150B, 150C, and 150D are formed above the tab 150A in order to connect to different locations of the tab 150A. In other words, it is preferable that the rear metal fitting 150L has tabs, in addition to the inlet tabs 150A, formed in a number equal to or greater than the number of points to be grounded.

Further, it is preferable to use a metal that is not easily corroded by metals different from the terminals of the wirings 160A, 160B, 160C, and 160D as the metal used for the back metal fitting 150.

Further, it is preferable to select the material, thickness, etc. so that the resistance value of grounding through the back metal fitting 150 and the Faston terminal 161 is the same as the resistance value of grounding with ordinary screws and nuts.

A fixing hole 150X is formed at the upper end of the back metal fitting 150. The upper end of the back metal fitting 150 is fixed to the structure of the main body 110, such as the shoulder member 112, the protective frame 113, or the base of the hinge 140, indirectly or directly with a screw or the like through the fixing hole 150X. Ru.

A fixing hole 150Y is formed at the lower end of the back metal fitting 150. The lower end of the back metal fitting 150 is fixed to the lower structure of the main body 110 indirectly or directly with a screw or the like through the fixing hole 150Y.

Particularly in this embodiment, since the back metal fitting 150 is elongated in the vertical direction, the fitting adjustment hole 150Z is also formed in the substantially vertical center. The center portion of the back metal fitting 150 is positioned by a convex rib, screw, or the like formed on the structure side of the main body 110 via the fitting adjustment hole 150Z.

As described above, the rice cooker 100 according to the present embodiment is grounded via the back metal fitting 150 for resisting the pressure generated during rice cooking, so that the rice cooker 100 can be efficiently operated without increasing the number of parts. Each part can be grounded.
[Second embodiment]

In the above embodiment, the FFC cable 170 is passed between the left back metal fitting 150L and the right back metal fitting 150R. However, the FFC cable 170 may be passed further to the left of the left back metal fitting 150L, or may be passed further to the right of the right back metal fitting 150R.
[Third embodiment]

In the above embodiment, two reinforcing back metal fittings 150L and 150R are attached to the back of the main body 110 of the rice cooker 100. However, as shown in FIG. 11, only the left rear metal fitting 150L may be attached, and the FFC cable 170 may be disposed approximately in the center between the left and right sides.

Alternatively, the back metal fitting 150 is not limited to an elongated plate shape, but may be formed into a plate shape that is thick in the left-right direction, and a plurality of tags may be formed on the sides thereof. In this case, the FFC cable 170 is preferably placed on the side of the back metal fitting 150.

Alternatively, the back metal fitting 150 may be formed into a bar shape, and a plurality of tags may be formed on the sides.

Conversely, by attaching three or more back metal fittings to the back of the rice cooker 100, the shoulder member 112, the protection frame 113, and the base of the hinge 140 may be prevented from being lifted upward during pressure cooking. Each part of the rice cooker 100 may be grounded using a part or all of those back metal fittings.

The embodiments disclosed this time should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is indicated by the claims rather than the above description, and it is intended that all changes within the meaning and range equivalent to the claims are included. Furthermore, configurations obtained by combining configurations of different embodiments described in this specification are also included in the scope of the present invention.

100: Rice cooker 110: Main body 111: Side cover 112: Shoulder member 113: Protective frame 114: Induction heating coil 116: Bottom heat shield plate 117: Power supply board 120: Lid body 121: Top cover 122: Inner lid 123: Operation panel 124: Control circuit board 125: Heat sink 130: Inner pot 140: Hinge 150: Back metal fitting 150A: Tab 150B: Tab 150C: Tab 150D: Tab 150L: Back metal fitting 150R: Back metal fitting 150X: Fixing hole 150Y: Fixing hole 150Z: Fitting adjustment hole 160: Wiring 160A: Wiring 160B: Wiring 160C: Wiring 160D: Wiring 161: Faston terminal 170: FFC cable

Claims (7)

A pressure rice cooker,
A lid body;
Equipped with a main body,
The main body includes a back metal fitting arranged on the back side of the main body to resist pressure applied during rice cooking,
A pressure rice cooker configured to be grounded through the rear metal fitting. The pressure rice cooker according to claim 1, wherein the back metal fitting is formed with a tab that enables fast connection as a connection part with wiring. The pressure rice cooker according to claim 1 or 2, wherein the back metal fitting has a first connection part to which a grounding wire is connected, and a plurality of second connection parts to which wiring to each part is connected. vessel. The pressure rice cooker according to claim 1 or 2, wherein the back metal fitting has a first connection part to which a grounding wire is connected, and a number of second connection parts equal to or greater than the number of wires connected to each part. The lid body includes a control board,
The pressure rice cooker according to any one of claims 1 to 4, wherein the back metal fitting is attached at a position avoiding a cable for connecting the control board and the main body when viewed from the back. The back metal fitting includes two metal fittings,
The pressure rice cooker according to claim 5, wherein the cable is arranged between the two metal fittings. 7. The rear metal fitting according to claim 1, wherein an upper end thereof is fixed to the upper part of the main body, a lower end thereof is fixed to the lower part of the main body, and a central part thereof is positioned with respect to the back surface of the main body. The pressure rice cooker according to any one of the items above.

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