JP2011217769A

JP2011217769A - Rice cooker

Info

Publication number: JP2011217769A
Application number: JP2010086406A
Authority: JP
Inventors: Hiroshi Ando; 宏安藤; Ryosuke Abe; 亮輔安部; Teruo Nakamura; 輝男中村
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2010-04-02
Filing date: 2010-04-02
Publication date: 2011-11-04
Anticipated expiration: 2030-04-02
Also published as: JP5225316B2

Abstract

PROBLEM TO BE SOLVED: To provide a rice cooker provided with a reinforcing member that is lightweight and easy to fabricate wherein it is possible to prevent deformation of a lid body and the like without fail and reduce the cost thereof.SOLUTION: The rice cooker includes a rice cooker body 1 in which an inner pot 6 is housed, a lid body 10 whose rear end portion is attached to the rice cooker body 1 through a hinge portion 2 and which openably covers the upper part of the rice cooker body 1, and a reinforcing member 70 that is fixed in the lid body 10 in the direction of the front and rear of the lid body 10 and whose rear end portion is pivotally supported on the hinge portion 2. The reinforcing member 70 includes a vertical portion and a horizontal portion formed by nearly perpendicularly bending a metal strip in the direction of the short sides thereof at least once. The rice cooker further includes a substantially circumferential portion formed by nearly bending the metal plate bent in the direction of the short sides thereof in the direction of the long sides thereof and a pair of straight portions extended outward from both ends of the nearly circumferential portion substantially in parallel with each other. The vertical portions of the straight portions have a hole fit on the hinge portion 2 in positions opposed to each other. As a result, it is possible to enhance strength and prevent deformation of the lid body with less material.

Description

この発明は、炊飯器に関するものであり、特に圧力を高めて炊飯の調理を行う炊飯器における蓋の補強構造に関する。 The present invention relates to a rice cooker, and more particularly to a lid reinforcing structure in a rice cooker that cooks rice by increasing pressure.

米と水が入れられた内釜の圧力を高めて炊飯を行うことはよく知られているが、このような炊飯器（以下、圧力式炊飯器ということがある）においては、蓋体に大きな圧力が加わるため、合成樹脂製の蓋体が変形したり破損したりすることがある。 Although it is well known that rice is cooked by increasing the pressure of the inner pot with rice and water, in such a rice cooker (hereinafter sometimes referred to as a pressure-type rice cooker) Since pressure is applied, the lid made of synthetic resin may be deformed or damaged.

このような圧力式炊飯器に、内鍋を収容し一側にヒンジ部を有し他側にロック解除ボタンとストッパーを有する調理器本体と、合成樹脂からなり調理器本体のヒンジ部により開閉自在とした蓋体と、内鍋の上方開口を覆う内蓋と、蓋体の空間部内に配設され一側がヒンジ部に軸止され他側が係止装置に掛止した金属材料からなる補強板と、補強板の他側に軸支され蓋体の閉塞時にストッパーに係止する係止部を有する係止板とを備え、補強板により蓋体の変形を防止するようにしたものがある（例えば、特許文献１参照）。 Such a pressure rice cooker contains an inner pot, has a hinge part on one side and a lock release button and stopper on the other side, and is made of synthetic resin and can be opened and closed by the hinge part of the cooker body. A lid, an inner lid covering the upper opening of the inner pot, a reinforcing plate made of a metal material disposed in the space of the lid, one side pivoted to the hinge and the other side latched to the locking device And a locking plate that is pivotally supported on the other side of the reinforcing plate and has a locking portion that locks the stopper when the lid is closed, and prevents the lid from being deformed by the reinforcing plate (for example, , See Patent Document 1).

特許第２８６９３９０号公報（第３−４頁、第３図）Japanese Patent No. 2869390 (page 3-4, FIG. 3)

従来の一般の圧力式炊飯器においては、蓋体は後端部がヒンジ部に枢支され、前端部が係止装置に係止して調理器本体にロックされているため、前後方向の中央部付近が一番変形し易い。
特許文献１に記載の従来の炊飯器においては、補強板はヒンジ部から係止装置まで１枚の平板の金属材料を折り曲げ・プレス抜き加工することで形成されている。また、補強板の中央部に部品を載置するために、材料の中央部を切り捨てている。このため製作時に使用される材料の使用量に対して強度へ有効な活用ができていない。 In a conventional general pressure rice cooker, the lid is pivotally supported by the hinge at the rear end, and the front end is locked by the locking device and locked to the cooker body. Near the part is most easily deformed.
In the conventional rice cooker described in Patent Document 1, the reinforcing plate is formed by bending and pressing a single flat metal material from the hinge portion to the locking device. Moreover, in order to mount components in the center part of the reinforcing plate, the center part of the material is discarded. For this reason, it is not possible to effectively use the strength with respect to the amount of material used at the time of manufacture.

また、補強板は、全長にわたって中央部付近の圧力に抵抗しうる強度（板厚）の材料で形成しなければならないため、ヒンジ部側や係止装置側のほとんど変形するおそれのない部分も、中央部付近と同じ材料、板厚で形成することになるので、重量が大きくなるばかりでなく製造が面倒で、コストアップになるという問題もある。 In addition, since the reinforcing plate must be formed of a material having a strength (plate thickness) that can resist the pressure near the central portion over the entire length, the hinge portion side and the portion on the locking device side that are not likely to deform, Since it is formed with the same material and plate thickness as those in the vicinity of the central portion, there is a problem that not only the weight is increased, but also the manufacturing is troublesome and the cost is increased.

本発明は、上記の課題を解決するためになされたものであり、材料の無駄がなく必要な強度を確保し、軽量かつ製作が容易でコストを低減することのできる補強部材を備え、コンパクトな炊飯器を提供することを目的とするものである。 The present invention has been made in order to solve the above-described problems, and is provided with a reinforcing member that ensures the required strength without waste of materials, is lightweight, easy to manufacture, and can reduce costs, and is compact. The purpose is to provide a rice cooker.

本発明に係る炊飯器は、内部に内釜を収容し、後部側上部にヒンジ部を有する炊飯器本体と、後端部がヒンジ部を介して炊飯器本体に枢支され、この炊飯器本体の上部を開閉自在に覆う蓋体と、この蓋体に配設された補強部材と、を備え、補強部材は、略円周状に構成され、断面形状として少なくとも垂直部とこの垂直部の一端から略垂直に延設された水平部とを有する略円周部と、この略円周部の両端から外方へほぼ平行に延設され、断面形状として少なくとも垂直部とこの垂直部の一端から略垂直に延設された水平部とを有する一対の略直線部と、を備え、一対の略直線部の垂直部は対向する位置に前記ヒンジ部と嵌合する穴を有するものである。 A rice cooker according to the present invention accommodates an inner pot inside, a rice cooker body having a hinge part at the upper part on the rear side, and a rear end part pivotally supported by the rice cooker body via the hinge part. A lid that covers the upper part of the lid so as to be openable and closable, and a reinforcing member disposed on the lid. The reinforcing member has a substantially circumferential shape, and has at least a vertical portion and one end of the vertical portion as a cross-sectional shape. A substantially circumferential portion having a horizontal portion extending substantially vertically from, and extending substantially parallel to the outside from both ends of the substantially circumferential portion, and having at least a vertical portion and one end of the vertical portion as a cross-sectional shape. A pair of substantially straight portions having a horizontal portion extending substantially vertically, and the vertical portions of the pair of substantially straight portions have holes that fit into the hinge portions at opposing positions.

本発明によれば、補強部材の材料の無駄がなく必要な強度を確保でき、軽量でかつ簡単に製作することができ、コンパクトでコストを低減しつつ蓋体の変形などを確実に防止することができる。 According to the present invention, there is no waste of the material of the reinforcing member, the necessary strength can be secured, the light weight can be easily manufactured, and the deformation of the lid is reliably prevented while being compact and reducing the cost. Can do.

本発明の実施の形態１に係る炊飯器の外観斜視図である。It is an external appearance perspective view of the rice cooker which concerns on Embodiment 1 of this invention. 図１の炊飯器の縦断面図である。It is a longitudinal cross-sectional view of the rice cooker of FIG. 図１の炊飯器の中蓋の全体斜視図である。It is a whole perspective view of the inner cover of the rice cooker of FIG. 図１の蓋開閉ボタンの斜視図である。It is a perspective view of the lid | cover opening / closing button of FIG. 図１のスライド部材の斜視図である。It is a perspective view of the slide member of FIG. スライド部材にソレノイドを取付けた状態を示す平面図である。It is a top view which shows the state which attached the solenoid to the slide member. 図１のフックの斜視図である。It is a perspective view of the hook of FIG. 図２の補強部材の斜視図である。It is a perspective view of the reinforcement member of FIG. 図２の補強部材加工工程概略図である。It is the reinforcement member processing process schematic of FIG. スライド部材の作用説明図である。It is operation | movement explanatory drawing of a slide member. スライド部材と蓋開閉ボタンとの位置関係を示す説明図である。It is explanatory drawing which shows the positional relationship of a slide member and a lid | cover opening / closing button. 蓋開閉ボタンに対するスライド部材の作用説明図である。It is action | operation explanatory drawing of the slide member with respect to a lid | cover opening / closing button. 本発明の実施の形態２に係る炊飯器の補強部材の斜視図である。It is a perspective view of the reinforcement member of the rice cooker which concerns on Embodiment 2 of this invention. 本発明の実施の形態２に係る炊飯器の補強部材の加工工程概略図である。It is a processing-process schematic diagram of the reinforcement member of the rice cooker which concerns on Embodiment 2 of this invention. 本発明の実施の形態３に係る炊飯器の補強部材の斜視図である。It is a perspective view of the reinforcement member of the rice cooker which concerns on Embodiment 3 of this invention. 本発明の実施の形態４に係る炊飯器の補強部材の上面図および断面図である。It is the upper side figure and sectional drawing of the reinforcement member of the rice cooker which concerns on Embodiment 4 of this invention. 補強部材の断面図である。It is sectional drawing of a reinforcement member. 補強部材と内釜の位置関係を示す断面図である。It is sectional drawing which shows the positional relationship of a reinforcing member and an inner hook. 補強部材とフックの位置関係を示す上面図である。It is a top view which shows the positional relationship of a reinforcement member and a hook. 曲げ加工後の補強部材の寸法説明図である。It is dimension explanatory drawing of the reinforcement member after a bending process. 補強部材の円周径と縁部の幅の寸法説明図である。It is dimension explanatory drawing of the circumferential diameter of a reinforcement member, and the width | variety of an edge part. 補強部材の周囲に設けられた中蓋のリブとねじボス形状の説明図である。It is explanatory drawing of the rib of the inner cover provided in the circumference | surroundings of the reinforcement member, and the screw boss shape.

実施の形態１．
図１は本発明の実施の形態１に係る炊飯器の外観斜視図、図２は図１の炊飯器の縦断面図であり、図３は図１の中蓋の全体斜視図である。なお、図２において、図２（ａ）は補強部材を取り除いた状態の炊飯器の縦断面図であり、図２（ｂ）は補強部材を取り付けた場合の補強部材の配置を示す炊飯器の縦断面図であり、同図中斜線で示したものが補強部材７０である。 Embodiment 1 FIG.
1 is an external perspective view of a rice cooker according to Embodiment 1 of the present invention, FIG. 2 is a longitudinal sectional view of the rice cooker of FIG. 1, and FIG. 3 is an overall perspective view of the inner lid of FIG. In addition, in FIG. 2, Fig.2 (a) is a longitudinal cross-sectional view of the rice cooker of the state which removed the reinforcement member, FIG.2 (b) is a rice cooker which shows arrangement | positioning of the reinforcement member at the time of attaching a reinforcement member. The reinforcing member 70 is a longitudinal sectional view, and the hatched portion in FIG.

以下、炊飯器の構成を図１〜図３を用いて説明する。なお、この説明では、図２（ａ）または図２（ｂ）の左側を前（図の左側に立つ調理者から見て手前）、右側を後という。図１に示すように、炊飯器は、前部に操作部８を備えた炊飯器本体１と、この炊飯器本体１の上部に設けられた蓋体１０とから構成されている。蓋体１０は、上蓋１１を備え、この上蓋１１の凹部２１には蓋開閉ボタン２３が設けられており、凹部１５には蒸気口２０が形成されたカートリッジ１７が設けられている。
また、図２（ａ）に示すように蓋体１０は、上部が開口した炊飯器本体１の後部側上部に設けたヒンジ部２に一端が枢支され、一部に金属板を有する合成樹脂で構成されており、炊飯器本体１の上部開口部を開閉自在に覆うように設けられている。 Hereinafter, the structure of the rice cooker will be described with reference to FIGS. In this description, the left side of FIG. 2 (a) or 2 (b) is referred to as the front (in front of the cook standing on the left side of the figure), and the right side is referred to as the rear. As shown in FIG. 1, the rice cooker is comprised from the rice cooker main body 1 provided with the operation part 8 in the front part, and the cover body 10 provided in the upper part of this rice cooker main body 1. As shown in FIG. The lid body 10 includes an upper lid 11, a lid opening / closing button 23 is provided in a concave portion 21 of the upper lid 11, and a cartridge 17 in which a steam port 20 is formed is provided in the concave portion 15.
Moreover, as shown to Fig.2 (a), as for the cover body 10, the end is pivotally supported by the hinge part 2 provided in the rear side upper part of the rice cooker main body 1 with which the upper part opened, and the synthetic resin which has a metal plate in part. It is comprised by and it is provided so that the upper opening part of the rice cooker main body 1 may be opened and closed freely.

炊飯器本体１内の下方には、ほぼ深皿状のコイル台３が設置されており、その下面及びコーナ面には電磁誘導コイル４が配設されている。温度センサー５はコイル台３の底部中央部付近に設けられ、ばねに付勢されてコイル台３の底部から上方に突出している。 Below the inside of the rice cooker body 1, a substantially deep dish-shaped coil base 3 is installed, and an electromagnetic induction coil 4 is disposed on the lower surface and the corner surface thereof. The temperature sensor 5 is provided near the center of the bottom of the coil base 3 and is biased by a spring so as to protrude upward from the bottom of the coil base 3.

内釜６は上部開口部の外周に設けたフランジ６ａが炊飯器本体１に係止して炊飯器本体１内に収容され、その下部はコイル台３に近接して位置し、内釜６の底面にはばねに付勢された温度センサー５が当接する。 The inner pot 6 is accommodated in the rice cooker main body 1 with a flange 6a provided on the outer periphery of the upper opening and is held in the rice cooker main body 1. A temperature sensor 5 biased by a spring abuts on the bottom surface.

制御部７は炊飯器本体１内において前面側に設けられ、操作部８は炊飯器本体１の前面に設けられる。係合部９は炊飯器本体１の上部開口部の前面側に設けられ、後述の蓋体１０のフック５５が係止する。 The control unit 7 is provided on the front side in the rice cooker body 1, and the operation unit 8 is provided on the front surface of the rice cooker body 1. The engaging part 9 is provided in the front side of the upper opening part of the rice cooker main body 1, and the hook 55 of the cover body 10 mentioned later latches.

蓋体１０は、上蓋１１と、その下面に配設された中蓋１２と、中蓋１２の下面に着脱可能に装着されて内釜６の上部開口部を覆う金属板からなる内蓋１３とによって構成されており、中蓋１２の下面には金属板からなる中蓋中間部材１４が固定されている。 The lid 10 includes an upper lid 11, an inner lid 12 disposed on the lower surface thereof, an inner lid 13 made of a metal plate that is detachably attached to the lower surface of the inner lid 12 and covers the upper opening of the inner hook 6. An intermediate lid intermediate member 14 made of a metal plate is fixed to the lower surface of the intermediate lid 12.

上蓋１１の後部側には開口部１６を有し後端部が開口された凹部１５が設けられており、この凹部１５には、下部に有底の筒状部１８が設けられたカートリッジ１７が、筒状部１８を開口部１６に着脱可能に挿入することにより収容されている。なお、筒状部１８の底部には通気孔１９が設けられており、カートリッジ１７の上壁には蒸気口が設けられている。 A concave portion 15 having an opening 16 and having a rear end opened is provided on the rear side of the upper lid 11, and in this concave portion 15, a cartridge 17 having a bottomed tubular portion 18 is provided. The cylindrical portion 18 is accommodated by being detachably inserted into the opening portion 16. A vent hole 19 is provided at the bottom of the cylindrical portion 18, and a steam port is provided at the upper wall of the cartridge 17.

また、上蓋１１の前部側に設けられた横長の凹部２１内には、蓋開閉ボタン２３が配設されている。この蓋開閉ボタン２３は、図４の蓋開閉ボタン２３の拡大斜視図に示すように、周壁を有するほぼ楕円形状の本体部２４と、先端部に外方に向う係止爪を有し、長手方向の内壁に沿って立設された左右各一対の係止片２５と、長手方向の両端部近傍において天面から立設された一対のロック棒２６ａ，２６ｂと、中央部において天面から立設された押圧部２７とからなり、ロック棒２６ａ，２６ｂにはばね２８が介装されている。 In addition, a lid opening / closing button 23 is disposed in a horizontally long recess 21 provided on the front side of the upper lid 11. As shown in the enlarged perspective view of the lid opening / closing button 23 in FIG. 4, the lid opening / closing button 23 has a substantially elliptical main body portion 24 having a peripheral wall and a locking claw directed outward at the tip portion. A pair of left and right engaging pieces 25 erected along the inner wall in the direction, a pair of lock bars 26a and 26b erected from the top surface in the vicinity of both ends in the longitudinal direction, and a center portion standing from the top surface A spring 28 is interposed between the lock rods 26a and 26b.

この蓋開閉ボタン２３は上蓋１１の凹部２１内に挿入され、係止片２５が凹部２１の底部に設けた穴（図示せず）から突出してその係止爪が底面に係止し、ロック棒２６ａ，２６ｂは凹部２１の底部に設けた穴２２から突出し、また、押圧部２７は凹部２１の底部中央部近傍に設けた開口部（図示せず）の上方に位置する。そして、ロック棒２６ａ，２６ｂに設けたばね２８が凹部２１の底部と本体部２４の天面との間に介装され、蓋開閉ボタン２３を上方に付勢している。 The lid opening / closing button 23 is inserted into the recess 21 of the upper lid 11, the locking piece 25 protrudes from a hole (not shown) provided in the bottom of the recess 21, and the locking claw locks to the bottom surface. 26a and 26b protrude from the hole 22 provided in the bottom part of the recessed part 21, and the press part 27 is located above the opening part (not shown) provided in the bottom center part vicinity of the recessed part 21. FIG. A spring 28 provided on the lock rods 26a and 26b is interposed between the bottom of the recess 21 and the top surface of the main body 24 to urge the lid opening / closing button 23 upward.

中蓋１２の上面のほぼ中央部には、下部が開口し前面側に開口部３１を有するドーム状の弁室３０が設けられており、開口部３１は中央部に弾性体３３が設けられたリング状のシール部材３２により閉塞されている。弁室３０の下部とカートリッジ１７の通気孔１９は蒸気通路３４によって連通している。 Near the center of the upper surface of the inner lid 12, a dome-shaped valve chamber 30 having an opening at the bottom and an opening 31 on the front side is provided, and the opening 31 is provided with an elastic body 33 at the center. The ring-shaped sealing member 32 is closed. The lower part of the valve chamber 30 and the vent hole 19 of the cartridge 17 communicate with each other through a steam passage 34.

スライド部材４０は、図５のスライド部材４０の拡大斜視図に示すように、開口部４２を有する枠状の本体部４１と、本体部４１の前面側の両側に設けられたロック部４３ａ，４３ｂとによりほぼ品字状に形成されている。そして、本体部４１の後部側には上部が開口し先端部に円板４５を有する円筒部４４が設けられており、円板４５の後面側には突部４６が設けられている。本体部４１の両側下端部にはフランジ４７が設けられている。
このスライド部材４０は、フランジ４７及びロック部４３ａ，４３ｂの下面が、中蓋１２の上面に設けたガイド部３５上に、前後方向にスライド自在に配設されている。なお、図示してないが、ガイド部３５の側部には、スライド部材４０が横方向に移動するのを防止するために、複数のガイドが設けられている。 As shown in the enlarged perspective view of the slide member 40 in FIG. 5, the slide member 40 includes a frame-shaped main body portion 41 having an opening 42, and lock portions 43 a and 43 b provided on both sides of the front surface side of the main body portion 41. It is formed in a nearly letter shape. A cylindrical portion 44 having an opening at the top and a disc 45 at the tip is provided on the rear side of the main body 41, and a protrusion 46 is provided on the rear side of the disc 45. Flange 47 is provided at the lower ends on both sides of main body 41.
In the slide member 40, the flange 47 and the lower surfaces of the lock portions 43 a and 43 b are disposed on the guide portion 35 provided on the upper surface of the inner lid 12 so as to be slidable in the front-rear direction. Although not shown, a plurality of guides are provided on the side portion of the guide portion 35 in order to prevent the slide member 40 from moving in the lateral direction.

スライド部材４０の本体部４１の開口部４２内には、図６に示すように、ソレノイド５０が配設され、ねじ５１により中蓋１２に固定されている。そして、その可動鉄心５２は円筒部４４内においてスライド部材４０に固定されており、非通電状態においては、図６に示すようにソレノイド５０から突出した状態にあり、その先端部は円板４５に近接又は当接している。５３はソレノイド５０のケースとスライド部材４０の円板４５との間において、可動鉄心５２に介装された復帰ばねで、スライド部材４０を後部側に付勢している。 As shown in FIG. 6, a solenoid 50 is disposed in the opening 42 of the main body 41 of the slide member 40, and is fixed to the inner lid 12 by screws 51. The movable iron core 52 is fixed to the slide member 40 in the cylindrical portion 44. In the non-energized state, the movable iron core 52 protrudes from the solenoid 50 as shown in FIG. Proximity or contact. 53 is a return spring interposed in the movable iron core 52 between the case of the solenoid 50 and the disc 45 of the slide member 40, and biases the slide member 40 to the rear side.

中蓋１２の上面の前端部近傍にはほぼ断面形状がＬ字状のフック５５が設けられており、図７に示すように、垂直片５７の両側から軸挿通穴５９を有する支持腕５８ａ，５８ｂが、垂直片５７及び水平片５６の双方に垂直に延設されている。また、水平片５６の長手方向のほぼ中央部の後部側には、水平片５６より上方に位置し、蓋開閉ボタン２３の押圧部２７と対向する受け片６０が設けられている。また、垂直片５７の両端部近傍には、炊飯器本体１に設けた係止部９に係止する係止爪６２を備えた一対の係止片６１ａ，６１ｂが延設されている。 Near the front end portion of the upper surface of the inner lid 12, a hook 55 having a substantially L-shaped cross section is provided. As shown in FIG. 7, support arms 58a having shaft insertion holes 59 from both sides of the vertical piece 57, 58 b extends vertically to both the vertical piece 57 and the horizontal piece 56. In addition, a receiving piece 60 that is located above the horizontal piece 56 and faces the pressing portion 27 of the lid opening / closing button 23 is provided on the rear side of the central portion in the longitudinal direction of the horizontal piece 56. In addition, a pair of locking pieces 61 a and 61 b provided with locking claws 62 locked to the locking portions 9 provided in the rice cooker body 1 are extended in the vicinity of both ends of the vertical piece 57.

このフック５５の支持腕５８ａ，５８ｂの軸挿通穴５９には、図７に示すように支持軸６３が回動自在に嵌入され、支持軸６３は後述の補強部材７０の軸貫通用の穴７８，７８により、軸支され，補強部材７０が中蓋１２に固定される。６４は支持軸６３に介装され、一端が中蓋１２に、他端がフック５５に取付けられたばねであり、フック５５を図７の矢印方向に常時付勢する。 As shown in FIG. 7, a support shaft 63 is rotatably fitted in the shaft insertion holes 59 of the support arms 58a and 58b of the hook 55, and the support shaft 63 is a hole 78 for shaft penetration of the reinforcing member 70 described later. , 78, and the reinforcing member 70 is fixed to the inner lid 12. Reference numeral 64 is a spring interposed between the support shaft 63, one end attached to the inner lid 12, and the other end attached to the hook 55, and always urges the hook 55 in the direction of the arrow in FIG.

補強部材７０は、図８の補強部材７０の外観斜視図に示すように、中蓋１２の上面に設けられ、蓋体１０の変形などを抑制するものである。
次に、この補強部材７０の加工工程について説明する。図９（ａ）〜（ｄ）は、補強部材７０の加工工程概略図である。まず、図９（ａ）に示すように、帯状の金属板１００に、ヒンジ軸挿通穴７３を穿設する場所となる内側垂直部１２１やねじ挿通穴７４を穿設する場所となる水平部１２２やヒンジ軸挿通穴７３とフック５５の支持軸６３の挿通穴７８を穿設する場所となる外側垂直部１２３を決めるために折曲げ部１０３を決めておく。そして、ヒンジ軸挿通穴７３を内側垂直部１２１と外側垂直部１２３に、ねじ挿通穴７４を水平部１２２に、挿通穴７８を外側垂直部１２３に穿設し、さらに後述する垂直片１０２を切り起こすための切り込み線を外側垂直部１２３に切り込んでおく（図９（ｂ））。
次に、図９（ａ）にて決めておいた折曲げ部１０３の部分で折り曲げ加工して内側垂直部１２１と水平部１２２と外側垂直部１２３を形成する（図９（ｃ））。この時の折り曲げ方向は、内側垂直部１２１と外側垂直部１２３が平行且つ対向する断面略コの字状となるように同一方向にほぼ垂直に２回折り曲げる。また、ヒンジ軸挿通穴７３と両端のねじ挿通穴７４との間の水平部１２２に後端曲げ部１０１を決めておく。そして、図９（ｄ）に示すように水平部１２２を上向き、内側垂直部１２１を内側にした状態でベンド加工を施し、図示するような略円周状の形状（以下、略円周部７１と呼ぶ場合がある）を形成する。このとき、後端曲げ部１０１の部分で折り曲げ加工も行われ、ヒンジ取付垂直部１２５とヒンジ取付水平部１２６とで構成されるヒンジ取付部１２４を形成して、補強部材７０が完成する。このヒンジ取付部１２４は略直線部を構成する。
なお、このとき、垂直片１０２は、前方へ突出した状態になる。
また、略円周部７１の大きさは、中蓋１２の幅方向に近い大きさまたは内釜６の大きさと略同等にしても良い。 As shown in the external perspective view of the reinforcing member 70 in FIG. 8, the reinforcing member 70 is provided on the upper surface of the inner lid 12 and suppresses deformation of the lid body 10.
Next, a process for processing the reinforcing member 70 will be described. 9A to 9D are schematic diagrams of processing steps for the reinforcing member 70. FIG. First, as shown in FIG. 9A, an inner vertical portion 121 that becomes a place where a hinge shaft insertion hole 73 is made and a horizontal portion 122 that becomes a place where a screw insertion hole 74 is made, on the belt-shaped metal plate 100. In addition, the bent portion 103 is determined in order to determine the outer vertical portion 123 where the hinge shaft insertion hole 73 and the insertion hole 78 of the support shaft 63 of the hook 55 are formed. Then, the hinge shaft insertion hole 73 is drilled in the inner vertical portion 121 and the outer vertical portion 123, the screw insertion hole 74 is drilled in the horizontal portion 122, the insertion hole 78 is drilled in the outer vertical portion 123, and a vertical piece 102 described later is cut. A cut line for raising is cut into the outer vertical portion 123 (FIG. 9B).
Next, the inner vertical portion 121, the horizontal portion 122, and the outer vertical portion 123 are formed by bending at the bent portion 103 determined in FIG. 9A (FIG. 9C). The bending direction at this time is bent almost twice in the same direction so that the inner vertical portion 121 and the outer vertical portion 123 are parallel and face each other in a substantially U-shaped cross section. Further, the rear end bending portion 101 is determined in the horizontal portion 122 between the hinge shaft insertion hole 73 and the screw insertion holes 74 at both ends. Then, as shown in FIG. 9 (d), bending is performed with the horizontal portion 122 facing upward and the inner vertical portion 121 facing inward, and a substantially circumferential shape as shown (hereinafter referred to as a substantially circumferential portion 71). May be called). At this time, a bending process is also performed at the rear end bending portion 101 to form the hinge attachment portion 124 constituted by the hinge attachment vertical portion 125 and the hinge attachment horizontal portion 126, and the reinforcing member 70 is completed. The hinge attachment portion 124 constitutes a substantially straight portion.
At this time, the vertical piece 102 protrudes forward.
Further, the size of the substantially circumferential portion 71 may be substantially the same as the size of the inner lid 12 in the width direction or the size of the inner hook 6.

次に、上記のように構成した補強部材７０の中蓋１２への取付け手順の一例について図８と図９（ｄ）を用いて説明する。
まず、補強部材７０の前方の挿通穴７８にフック５５に設けた支持軸６３の両端部を挿入し、補強部材７０の後端部を中蓋１２の後端付近から外方に突出させて中蓋１２に載置し、ねじ挿通穴７４に挿通したねじ８０により中蓋１２に固定する。 Next, an example of a procedure for attaching the reinforcing member 70 configured as described above to the inner lid 12 will be described with reference to FIGS. 8 and 9D.
First, both end portions of the support shaft 63 provided in the hook 55 are inserted into the insertion holes 78 in front of the reinforcing member 70, and the rear end portion of the reinforcing member 70 protrudes outward from the vicinity of the rear end of the inner lid 12 so that the It is placed on the lid 12 and fixed to the inner lid 12 with a screw 80 inserted through the screw insertion hole 74.

内蓋１３の中蓋１２に設けた弁室３０の直下には開口部８５が設けられており、この開口部８５には有天円筒状で、その天面が弁室３０の上下方向のほぼ中間部に位置する内筒８６が装着されている。そして、内筒８６の下部開口部には中心部に蒸気通路８８を有する弾性体８７が装着されており、また、天板の中心部には弁孔８９が設けられ、天板の上面の弁孔８９の外周には、後部側が上方に傾斜した弁座９０が形成されている。９１は弁座９０上に位置する調圧ボールである。 An opening 85 is provided immediately below the valve chamber 30 provided in the inner lid 12 of the inner lid 13. The opening 85 has a cylindrical shape, and its top surface is substantially in the vertical direction of the valve chamber 30. An inner cylinder 86 located at the intermediate portion is attached. An elastic body 87 having a steam passage 88 at the center is attached to the lower opening of the inner cylinder 86, and a valve hole 89 is provided at the center of the top plate. A valve seat 90 whose rear side is inclined upward is formed on the outer periphery of the hole 89. A pressure adjusting ball 91 is located on the valve seat 90.

上記のように構成した蓋体１０は、中蓋１２の補強部材７０のヒンジ軸挿通穴７３がヒンジ部２のヒンジ軸２ａに嵌合されて炊飯器本体１に開閉自在に支持され、その上面には上蓋１１が結合され、下面には内蓋１３が着脱可能に装着される。 The lid body 10 configured as described above is supported by the rice cooker body 1 so that the hinge shaft insertion hole 73 of the reinforcing member 70 of the inner lid 12 is fitted to the hinge shaft 2a of the hinge portion 2 so as to be freely opened and closed. An upper lid 11 is coupled to the lower surface, and an inner lid 13 is detachably mounted on the lower surface.

次に、蓋体１０の動作について説明する。
中蓋１２に設けたソレノイド５０が非通電状態の場合は、図１０（ａ）に示すように、ソレノイド５０の可動鉄心５２は後退しており、可動鉄心５２と一体化されたスライド部材４０も後方へスライドし、その突部４６が弁室３０の開口部３１に設けた弾性体３３を押圧して弾性変形させ、調圧ボール９１を弁座９０の後部側に移動させて弁孔８９を開放している。 Next, the operation of the lid 10 will be described.
When the solenoid 50 provided in the inner lid 12 is in a non-energized state, as shown in FIG. 10A, the movable iron core 52 of the solenoid 50 is retracted, and the slide member 40 integrated with the movable iron core 52 is also included. The projection 46 slides backward, the elastic body 33 provided in the opening 31 of the valve chamber 30 is pressed and elastically deformed, and the pressure adjusting ball 91 is moved to the rear side of the valve seat 90 to open the valve hole 89. It is open.

この状態で蓋体１０を閉じると、フック５５の係止爪６２が炊飯器本体１の係止部９に係合し、炊飯器本体１の上部開口部を閉塞してロックする。このとき、蓋開閉ボタン２３の押圧部２７は図１０（ａ）、図１１に示すようにフック５５の受け片６０に当接又は近接して位置する。また、スライド部材４０のロック部４３ａ，４３ｂは、図１２（ａ）に示すように、蓋開閉ボタン２３のロック棒２６ａ，２６ｂより後部側に位置する。
そして、ユーザーが蓋開閉ボタン２３を圧下すると、押圧部２７が受け片６０を圧下してフック５５を回動させ、係止爪６２が係止部９から離脱するので、蓋体１０をヒンジ部２を軸に上方に回動することにより開放することができる。 When the lid body 10 is closed in this state, the engaging claw 62 of the hook 55 engages with the engaging portion 9 of the rice cooker body 1, and the upper opening of the rice cooker body 1 is closed and locked. At this time, the pressing portion 27 of the lid opening / closing button 23 is located in contact with or close to the receiving piece 60 of the hook 55 as shown in FIGS. Moreover, the lock parts 43a and 43b of the slide member 40 are located on the rear side of the lock bars 26a and 26b of the lid opening / closing button 23, as shown in FIG.
When the user lowers the lid opening / closing button 23, the pressing portion 27 lowers the receiving piece 60 to rotate the hook 55, and the locking claw 62 is detached from the locking portion 9. 2 can be opened by pivoting upward about the axis.

図１０（ａ）の状態でユーザーが操作部を操作することによりソレノイド５０に通電すると、図１０（ｂ）に示すように、可動鉄心５２が前進し、これに連結されたスライド部材４０が前部側に移動して弾性体３３は元の状態に戻り、調圧ボール９１は自重により移動して弁孔８９を閉じる。このとき、前部側に移動したスライド部材４０は、図１２（ｂ）に示すように、そのロック部４３ａ，４３ｂが蓋開閉ボタン２３のロック棒２６ａ，２６ｂの直下に移動し、蓋開閉ボタン２３をロックして下降を阻止する。これにより、蓋開閉ボタン２３を圧下することができないので、蓋体１０を開放することができない。 When the user operates the operation unit in the state of FIG. 10A and energizes the solenoid 50, the movable iron core 52 moves forward as shown in FIG. 10B, and the slide member 40 connected thereto moves forward. The elastic body 33 returns to its original state by moving to the part side, and the pressure adjusting ball 91 is moved by its own weight to close the valve hole 89. At this time, as shown in FIG. 12B, the slide member 40 moved to the front side moves its lock portions 43a, 43b directly below the lock bars 26a, 26b of the lid opening / closing button 23, and the lid opening / closing button. 23 is locked to prevent the descent. Thereby, since the lid opening / closing button 23 cannot be pressed down, the lid body 10 cannot be opened.

次に、上記のように構成した炊飯器により炊飯する場合について説明する。
ユーザーは、所定の米と水が入れられた内釜６を炊飯器本体１内にセットし、蓋体１０を閉じる。圧力をかけて炊飯する場合、ユーザーは、操作部８を操作する。これにより、ソレノイド５０に通電し、図１，図１０（ｂ）に示すように、調圧ボール９１により内筒８６の弁孔８９を閉鎖する。また、図１２（ｂ）に示すように、スライド部材４０により、蓋開閉ボタン２３をロックする。そして、ユーザーが操作部８を操作すると、電磁誘導コイル４等に通電し、炊飯を開始する。 Next, the case where it cooks with the rice cooker comprised as mentioned above is demonstrated.
The user sets the inner pot 6 containing predetermined rice and water in the rice cooker body 1 and closes the lid 10. When cooking rice by applying pressure, the user operates the operation unit 8. Thereby, the solenoid 50 is energized, and the valve hole 89 of the inner cylinder 86 is closed by the pressure adjusting ball 91 as shown in FIGS. Further, as shown in FIG. 12B, the lid opening / closing button 23 is locked by the slide member 40. And if a user operates the operation part 8, it will energize to the electromagnetic induction coil 4 grade | etc., And rice cooking will be started.

炊飯中は、内筒８６の弁孔８９が閉鎖されているため、内釜６内に発生した蒸気が漏れることがないので内釜６内の圧力が上昇し、高圧のもとで炊飯が行われる。内釜６内の圧力の上昇により蓋体１０にこれを押上げようとする力が作用するが、蓋体１０はその前後がフック５５とヒンジ部２により炊飯器本体１に固定されているため、蓋体１０の中央部付近に大きな圧力が作用する。 During cooking, since the valve hole 89 of the inner cylinder 86 is closed, the steam generated in the inner pot 6 does not leak, so the pressure in the inner pot 6 rises and rice cooking is performed under high pressure. Is called. Although the force which pushes up this acts on the cover body 10 by the rise in the pressure in the inner pot 6, the cover body 10 is fixed to the rice cooker body 1 by the hook 55 and the hinge part 2 at the front and rear. A large pressure acts near the center of the lid 10.

しかしながら、本発明においては、補強部材７０を、蓋体１０内に略円周状に形成したので、圧力によって蓋体１０が変形したり破損したりするのを確実に防止することができる。また、補強部材７０を帯状の金属板１００から形成したので、材料の無駄もなく、補強部材７０の略円周部７１の内側に弁室などの他の部品を自由に設置できるため、軽量、コンパクトな構成とすることができる。蓋体１０にひび割れなどを生じることがない。 However, in the present invention, since the reinforcing member 70 is formed in a substantially circumferential shape in the lid body 10, it is possible to reliably prevent the lid body 10 from being deformed or damaged by pressure. Further, since the reinforcing member 70 is formed from the band-shaped metal plate 100, there is no waste of material, and other parts such as a valve chamber can be freely installed inside the substantially circumferential portion 71 of the reinforcing member 70. It can be set as a compact structure. The lid 10 is not cracked.

炊飯が終るとソレノイド５０への通電がＯＦＦされて、可動鉄心５２及びスライド部材４０は図１０（ａ）の状態に戻って内筒８６の弁孔８９が開放されるので、内釜６内の高圧蒸気は、内筒８６の弁孔８９から弁室３０を通って、蒸気通路３４、カートリッジ１７の通気穴１９を経て蒸気口２０から外部に放出される。同時に、蓋開閉ボタン２３のロックが解除されるので、蓋体１０を開放することができる。 When rice cooking is finished, the energization to the solenoid 50 is turned off, and the movable iron core 52 and the slide member 40 return to the state of FIG. 10A and the valve hole 89 of the inner cylinder 86 is opened. High-pressure steam passes through the valve chamber 30 from the valve hole 89 of the inner cylinder 86, and is discharged to the outside through the steam passage 34 and the vent hole 19 of the cartridge 17. At the same time, since the lid opening / closing button 23 is unlocked, the lid 10 can be opened.

圧力をかけないで炊飯する場合は、ソレノイド５０に通電せず、図１０（ａ）の状態で電磁誘導コイル４等に通電すればよい。これにより、内釜６に発生した蒸気は、内筒８６の弁孔８９から弁室３０を通って、蒸気通路３４、カートリッジ１７の通気穴１９を経て蒸気口２０から放出され、炊飯される。 When cooking rice without applying pressure, the solenoid 50 may be energized without energizing the solenoid 50 in the state of FIG. Thereby, the steam generated in the inner pot 6 passes through the valve chamber 30 from the valve hole 89 of the inner cylinder 86, is discharged from the steam port 20 through the steam passage 34 and the vent hole 19 of the cartridge 17, and is cooked.

上記の説明では、補強部材７０の断面を略コの字状としているが、これに限る必要はなく、少なくとも一つの略水平面と一つの略垂直面を有していれば良い。例えば、図１７（ｂ）に示すように略Ｌ字状でも良いし、図１７（ｃ）に示すように数字の７のような形でも良いし、図１７（ｄ）に示すように略Ｚ字状でも良い。また図２０に示すように略水平部と略垂直部の曲げ加工は外側曲げ寸法をＲ１とし、板厚寸法をｔ１としたとき、「Ｒ１≧ｔ１」とすることで、曲げ部分の厚みを確保でき、強度を保てる。仮に「Ｒ１＜ｔ１」とすると、平板の曲げを行う際に、内Ｒが外Ｒよりも小さくなり、局所的に外側が大きく伸び、内側が縮むので、板厚が薄くなったり、不均一になり、よれが生じたり、ひびや切れが生じたりする場合がある。
また、補強部材７０を金属板１００から曲げ加工により上記の形状の断面を有するように構成しているが、元々上記断面が形成されているＬ字材やチャンネル材を補強部材７０として使用してもよい。
また、図１８に示すように補強部材７０の略円周部７１の直径は内釜６の直径と同等にするのが望ましい。これは、内釜６のシール６５の変形を防ぐことが蒸気モレを抑制するのに一番ふさわしいためである。即ち、図２（ｂ）に示すよう内釜６の上部開口部の外周にはほぼ水平の外向きにフランジ６ａが設けられている。この内釜６の開口部の上方は内蓋１３と中蓋１２によって覆われており、さらに弾性変形する合成樹脂製のシール６５が補強部材７０とフランジ６ａとの間に介在すると共にこのシール６５の一部がさらに内釜６の上部内壁にまで延在している。そして、調理者が蓋体１０を閉じると、ロック機構により蓋体１０が炊飯器本体１に係止するので、上蓋１１から補強部材７０を介して下方向の圧力が作用し、この圧力によりシール６５が少しだけ変形する。これにより、シール６５は、フランジ６ａを上から下に押す圧力だけでなく、変形によって内釜６の上部内壁を外周方向へ押す力が作用する。これにより、内釜６は内蓋１３と中蓋１２およびシール６５によって密閉された状態となる。
また、調理中に内釜６内の蒸気圧が作用することで蓋体１０が多少変形した場合、この変形により補強部材７０は多少前後左右に移動するが、蓋体１０のロック機構が機能しているため、上下方向の変形は殆どない。また、補強部材７０の前後左右の移動範囲も蓋体１０の変形により、補強部材７０とフランジ６ａとの間に摩擦力が作用するので、フランジ６ａの領域内に収まる。従って、補強部材７０はフランジ６ａの上に常時位置することになり、内釜６との密閉性を維持することができるため、蒸気漏れの問題は発生しない。 In the above description, the reinforcing member 70 has a substantially U-shaped cross section. However, the present invention is not limited to this, and the reinforcing member 70 may have at least one substantially horizontal plane and one substantially vertical plane. For example, it may be substantially L-shaped as shown in FIG. 17 (b), may be a shape like the numeral 7 as shown in FIG. 17 (c), or is substantially Z-shaped as shown in FIG. 17 (d). It may be letter-shaped. In addition, as shown in FIG. 20, the bending process of the substantially horizontal portion and the substantially vertical portion secures the thickness of the bent portion by setting “R1 ≧ t1” when the outer bend dimension is R1 and the plate thickness dimension is t1. Yes, you can keep the strength. Assuming that “R1 <t1”, when the flat plate is bent, the inner R becomes smaller than the outer R, the outer side expands locally, the inner side shrinks, and the inner side shrinks. May be kinked or cracked or cut.
In addition, the reinforcing member 70 is configured to have a cross section of the above shape by bending from the metal plate 100, but an L-shaped material or a channel material originally formed with the above cross section is used as the reinforcing member 70. Also good.
Further, as shown in FIG. 18, the diameter of the substantially circumferential portion 71 of the reinforcing member 70 is preferably equal to the diameter of the inner hook 6. This is because preventing deformation of the seal 65 of the inner hook 6 is most suitable for suppressing steam leakage. That is, as shown in FIG. 2B, a flange 6a is provided on the outer periphery of the upper opening of the inner hook 6 so as to be substantially horizontal outward. An upper portion of the opening portion of the inner hook 6 is covered with an inner lid 13 and an inner lid 12, and a synthetic resin seal 65 which is further elastically deformed is interposed between the reinforcing member 70 and the flange 6a. Is further extended to the upper inner wall of the inner hook 6. Then, when the cook closes the lid 10, the lid 10 is locked to the rice cooker main body 1 by the lock mechanism, so that a downward pressure acts from the upper lid 11 via the reinforcing member 70, and the pressure is sealed. 65 is slightly deformed. Thereby, not only the pressure which pushes the flange 6a down from the top but the force which pushes the upper inner wall of the inner hook 6 to an outer peripheral direction by a deformation | transformation acts on the seal 65. As a result, the inner hook 6 is sealed by the inner lid 13, the inner lid 12 and the seal 65.
In addition, when the lid 10 is slightly deformed due to the action of the vapor pressure in the inner pot 6 during cooking, the deformation causes the reinforcing member 70 to move somewhat back and forth and to the left and right, but the locking mechanism of the lid 10 functions. Therefore, there is almost no deformation in the vertical direction. Further, the front / rear / left / right movement range of the reinforcing member 70 is also within the region of the flange 6a because a frictional force acts between the reinforcing member 70 and the flange 6a due to the deformation of the lid 10. Accordingly, the reinforcing member 70 is always located on the flange 6a, and the sealing performance with the inner hook 6 can be maintained, so that the problem of steam leakage does not occur.

また、図１９に示すように蓋と本体を係止するロック機構は本体の前方に位置しており、フック５５は炊飯器の形態に合わせて、図１９（ｃ）に示すように本体の前側１箇所１０９に設けても良いし、本体の両側一対１１０に設けても良い。図１９（ｂ）に示すように両側一対にすることで、補強部材７０の略円周部７１と筐体の角部に設けられるので、コンパクトな構成とすることができる。また、図２１に示すように略円周状にベンド加工する半径Ｒ２は、断面水平面の幅Ｗ１に対して、Ｒ２≧４Ｗ１とすると、ベンド加工時の板材のよれや切れがなく、寸法の精度を確保できる。また、図２２に示すように円周状の補強部材７０の内周もしくは外周に略円周状のリブ１３１を中蓋１２に備えることにより補強部材７０の位置決めが容易なほか、蓋全体の剛性も無駄なスペースや無駄な材料を使用することなく仕上げることができる。特に内周側に一定のすきまｇをあけて設けることで、炊飯時の熱で熱膨張をおこし、金属製の補強部材７０と樹脂製の中蓋１２を密着させることができる。また外周側に設けることで、熱膨張差による力を受けにくくし、中蓋１２の損傷を防止することもできる。補強部材７０の水平部の下面には中蓋１２にねじを止めるボス１１１をリブ状に複数個設けることで、無駄なスペースを必要としないで、内釜６の圧力による変形を抑えることができる。また、補強部材７０を中蓋１２に取り付けるためのねじ挿通穴７４はねじよりもサイズの大きい穴や長穴（図示せず）とすることで、熱膨張の違いによる寸法変化を吸収することができる。
また、温度センサー５は底部中央部付近に設けられていると説明したが、内釜の底部外周付近とすれば炊飯器を更にコンパクトに構成できる。操作部８も本構成によりスペースが有効になった蓋体１０内（例えば上面）に設置できれば更にコンパクトとなるし、カートリッジ１７においても外側から挿入せずに、スペースが有効となった蓋体１０内に内側から挿入する形とすれば蓋体１０の天面の凹凸もなくすっきりとコンパクトな形に構成できる。蓋開閉ボタン２３も位置を炊飯器本体１の前面側に配置してもよいし、ボタン形状も楕円状に限らず、略四角形状や円状でも良い。弁室３０の位置も蓋体１０の中央部に限らず、内釜６の外径内であれば良く、弁室３０の開口部８５も前面側に固執することはない。 Moreover, as shown in FIG. 19, the lock mechanism which locks a lid | cover and a main body is located in the front of a main body, and the hook 55 is a front side of a main body as shown in FIG.19 (c) according to the form of a rice cooker. You may provide in one place 109 and may provide in the both-sides pair 110 of a main body. As shown in FIG. 19 (b), by providing a pair on both sides, the reinforcing member 70 is provided at the substantially circumferential portion 71 and the corner portion of the housing, so that a compact configuration can be achieved. Further, as shown in FIG. 21, when the radius R2 for bending in a substantially circumferential shape is R2 ≧ 4W1 with respect to the width W1 of the horizontal section, there is no twisting or cutting of the plate material during bending, and dimensional accuracy Can be secured. Further, as shown in FIG. 22, the inner lid 12 is provided with a substantially circumferential rib 131 on the inner periphery or outer periphery of the circumferential reinforcing member 70, so that the reinforcing member 70 can be easily positioned, and the rigidity of the entire lid is increased. Even finish without using wasted space and wasted materials. In particular, by providing a certain gap g on the inner peripheral side, thermal expansion can be caused by heat during rice cooking, and the metal reinforcing member 70 and the resin inner lid 12 can be brought into close contact with each other. Moreover, by providing in the outer peripheral side, it becomes difficult to receive the force by a thermal expansion difference, and the damage of the inner lid 12 can also be prevented. By providing a plurality of ribs bosses 111 for fastening screws to the inner lid 12 on the lower surface of the horizontal portion of the reinforcing member 70, it is possible to suppress deformation due to the pressure of the inner hook 6 without requiring useless space. . Moreover, the screw insertion hole 74 for attaching the reinforcing member 70 to the inner lid 12 is a hole or a long hole (not shown) having a size larger than that of the screw, so that a dimensional change due to a difference in thermal expansion can be absorbed. it can.
Moreover, although it demonstrated that the temperature sensor 5 was provided near the bottom center part, if it is set to the bottom outer periphery vicinity of an inner pot, a rice cooker can be comprised more compactly. If the operation unit 8 can be installed in the lid 10 (for example, the upper surface) in which space is enabled by this configuration, the operation unit 8 is further compacted, and the lid 10 in which the space is enabled without being inserted from the outside also in the cartridge 17. If the shape is inserted from the inside into the inside, the top surface of the lid body 10 can be formed into a clean and compact shape without unevenness. The position of the lid opening / closing button 23 may also be arranged on the front side of the rice cooker body 1, and the button shape is not limited to an elliptical shape, and may be a substantially square shape or a circular shape. The position of the valve chamber 30 is not limited to the central portion of the lid body 10 but may be within the outer diameter of the inner hook 6 and the opening 85 of the valve chamber 30 does not stick to the front side.

以上詳述したように、炊飯器に圧力をかけて炊飯する場合、蓋体１０の中央部付近に大きな変形となる力が作用するが、本実施の形態においては、蓋体１０内に略円周状の補強部材７０を構成することで、均一に変形させることができ、圧力による蓋体１０の変形や損傷などを確実に防止することができる。また、補強部材７０の断面を略コの字状あるいは略Ｌ字状に構成したので、補強部材７０を従来並みの強度を維持しながら、従来よりも比較的板厚の薄い金属板１００で形成することができる。このため、コストを低減できるばかりでなく、製造が容易でその上軽量化することができる。 As described above in detail, when rice is cooked by applying pressure to the rice cooker, a large deformation force acts near the center of the lid 10, but in the present embodiment, the lid 10 has a substantially circular shape. By configuring the circumferential reinforcing member 70, it can be uniformly deformed, and deformation or damage of the lid 10 due to pressure can be reliably prevented. In addition, since the cross section of the reinforcing member 70 is configured to be substantially U-shaped or substantially L-shaped, the reinforcing member 70 is formed of the metal plate 100 having a relatively thinner thickness than the conventional one while maintaining the same strength as the conventional one. can do. For this reason, not only can the cost be reduced, but also the manufacturing is easy and the weight can be reduced.

実施の形態２．
図１３、図１４は本発明の実施の形態２に係る炊飯器の補強部材の斜視図である。なお、実施の形態１の補強部材と同じ部分にはこれと同じ符号を付し、説明を省略する。
本実施の形態２では、補強部材７０は、図１３の補強部材７０の外観斜視図に示すように、中蓋１２の上面に設けられ、蓋体１０の変形などを抑制するようにしている。
次に、この補強部材７０の加工工程について説明する。図１４（ａ）〜（ｄ）は、補強部材７０の加工工程概略図である。まず、図１４（ａ）に示すように、帯状の金属板１００に、ヒンジ軸挿通穴７３とフック５５の支持軸６３の挿通穴７８を穿設する場所となる内側垂直部１２１やねじ挿通穴７４を穿設する場所となる水平部１２２を決めるために折曲げ部１０３を決めておく。そして、ヒンジ軸挿通穴７３と挿通穴７８を内側垂直部１２１に、ねじ挿通穴７４を水平部１２２に穿設しておく（図１４（ｂ））。
次に、図１４（ａ）にて決めておいた折曲げ部１０３部分で折り曲げ加工して内側垂直部１２１と水平部１２２を形成する（図１４（ｃ））。この時の折り曲げ方向は、内側垂直部１２１と水平部１２２がほぼ垂直になるような断面略Ｌ字状とする。また、ヒンジ軸挿通穴７３と両端のねじ挿通穴７４との間の水平部１２２に後端曲げ部１０１を決めておく。そして、図１４（ｄ）に示すように水平部１２２を上向き、内側垂直部１２１を内側にした状態でベンド加工を施し、図示するような略円周部７１を形成する。このとき、後端曲げ部１０１の部分で折り曲げ加工も行われ、ヒンジ取付垂直部１２５とヒンジ取付水平部１２６とで構成されるヒンジ取付部１２４を形成して、補強部材７０が完成する。
なお、略円周部７１の大きさは、中蓋１２の幅方向に近い大きさまたは内釜６の大きさと略同等にしても良い。 Embodiment 2. FIG.
13 and 14 are perspective views of the reinforcing member of the rice cooker according to Embodiment 2 of the present invention. In addition, the same code | symbol is attached | subjected to the same part as the reinforcement member of Embodiment 1, and description is abbreviate | omitted.
In the second embodiment, the reinforcing member 70 is provided on the upper surface of the inner lid 12 as shown in the external perspective view of the reinforcing member 70 in FIG. 13 to suppress deformation of the lid body 10.
Next, a process for processing the reinforcing member 70 will be described. 14A to 14D are schematic diagrams of processing steps for the reinforcing member 70. FIG. First, as shown in FIG. 14 (a), an inner vertical portion 121 or a screw insertion hole serving as a place where a hinge shaft insertion hole 73 and an insertion hole 78 of the support shaft 63 of the hook 55 are formed in the belt-shaped metal plate 100. The bent portion 103 is determined in order to determine the horizontal portion 122 that is a place to puncture 74. Then, the hinge shaft insertion hole 73 and the insertion hole 78 are formed in the inner vertical portion 121, and the screw insertion hole 74 is formed in the horizontal portion 122 (FIG. 14B).
Next, the inner vertical portion 121 and the horizontal portion 122 are formed by bending the bent portion 103 determined in FIG. 14A (FIG. 14C). The bending direction at this time is a substantially L-shaped cross section so that the inner vertical portion 121 and the horizontal portion 122 are substantially vertical. Further, the rear end bending portion 101 is determined in the horizontal portion 122 between the hinge shaft insertion hole 73 and the screw insertion holes 74 at both ends. Then, as shown in FIG. 14 (d), bending is performed with the horizontal portion 122 facing upward and the inner vertical portion 121 facing inward to form a substantially circumferential portion 71 as shown. At this time, a bending process is also performed at the rear end bending portion 101 to form the hinge attachment portion 124 constituted by the hinge attachment vertical portion 125 and the hinge attachment horizontal portion 126, and the reinforcing member 70 is completed.
Note that the size of the substantially circumferential portion 71 may be substantially the same as the size of the inner lid 12 in the width direction or the size of the inner hook 6.

このように構成したことにより、炊飯器の通電時には内圧の増加により蓋体１０の中央部付近に大きな変形となる力が作用するが、本実施の形態においては、蓋体１０内に略円周状の補強部材７０を構成することで、均一に変形させることができ、圧力による蓋体１０の変形や損傷などを確実に防止することができる。 With this configuration, a large deformation force acts near the center of the lid 10 due to an increase in internal pressure when the rice cooker is energized. In this embodiment, the circumference of the lid 10 is substantially By forming the reinforcing member 70 in the shape, it can be uniformly deformed, and deformation or damage of the lid 10 due to pressure can be reliably prevented.

実施の形態３．
図１５は本発明の実施の形態３に係る炊飯器の補強部材の斜視図である。なお、実施の形態１の補強部材７０と同じ部分にはこれと同じ符号を付し、説明を省略する。
本実施の形態では、補強部材７０後方の左右に分かれた部分の強度を補強するために、水平部１０４ａと垂直部１０４ｂとからなる断面形状が略Ｌ字状で長手方向を補強部材７０の略円周部７１とほぼ同心の円弧になるように曲げ加工した金属製の後部補強体１０４を設け、この後部補強体１０４の両端部の水平部１０４ａに前記補強部材７０の水平部１２２に設けたねじ挿通穴７４と共締めできるねじ挿通穴１０５を設け、互いを共締めしたものである。これにより、補強部材７０の左右に分かれた部分が塞がり、補強部材７０の形状は完全に閉じた略円周状の環となる。 Embodiment 3 FIG.
FIG. 15 is a perspective view of a reinforcing member of a rice cooker according to Embodiment 3 of the present invention. In addition, the same code | symbol is attached | subjected to the same part as the reinforcement member 70 of Embodiment 1, and description is abbreviate | omitted.
In the present embodiment, in order to reinforce the strength of the left and right divided portions behind the reinforcing member 70, the cross-sectional shape composed of the horizontal portion 104a and the vertical portion 104b is substantially L-shaped and the longitudinal direction is substantially the same as that of the reinforcing member 70. A metal rear reinforcing body 104 bent so as to form an arc substantially concentric with the circumferential portion 71 is provided, and the horizontal portion 104a at both ends of the rear reinforcing body 104 is provided in the horizontal portion 122 of the reinforcing member 70. A screw insertion hole 105 that can be fastened together with the screw insertion hole 74 is provided, and both are fastened together. As a result, the left and right parts of the reinforcing member 70 are closed, and the shape of the reinforcing member 70 is a substantially circular ring that is completely closed.

以上のように構成したことにより、無駄なスペースを使用することなく、完全に閉じた略円周状の補強部材７０で蓋体１０の強度を高めることができるので、通電調理時に内圧が高まり蓋体１０を変形させる力が作用しても、蓋体１０の左右、前後の強度バランスが確保でき、圧力による蓋体１０の変形や損傷などを確実に防止することができる。 With the above configuration, the strength of the lid body 10 can be increased by the substantially circumferential reinforcing member 70 that is completely closed without using a useless space. Even if a force for deforming the body 10 is applied, a balance of strength between the left and right and the front and rear of the lid 10 can be secured, and deformation and damage of the lid 10 due to pressure can be reliably prevented.

実施の形態４．
図１６は本発明の実施の形態４に係る炊飯器の補強部材の上面図である。なお、実施の形態１の補強部材と同じ部分にはこれと同じ符号を付し、説明を省略する。
実施の形態１では、補強部材７０は帯状の金属板１００を折り曲げ加工してコの字状の均一な断面形状を構成し，ベンド加工にて略円周状に形成したものである。
これに対して、本実施の形態に係る補強部材７０は、帯状の金属板１００の長手方向の一側面を波形１０６に切断し、その後折り曲げ加工によって構成したＬ字状の断面の水平部１２２を連続的に変化させたものである。 Embodiment 4 FIG.
FIG. 16 is a top view of the reinforcing member of the rice cooker according to Embodiment 4 of the present invention. In addition, the same code | symbol is attached | subjected to the same part as the reinforcement member of Embodiment 1, and description is abbreviate | omitted.
In the first embodiment, the reinforcing member 70 is formed by bending a band-shaped metal plate 100 to form a uniform U-shaped cross-section, and is formed in a substantially circumferential shape by bending.
On the other hand, the reinforcing member 70 according to the present embodiment cuts one side surface in the longitudinal direction of the belt-shaped metal plate 100 into a corrugated shape 106, and then forms an L-shaped cross-section horizontal portion 122 formed by bending. It is a continuous change.

次に、この補強部材７０の加工工程について説明する。図１６（ａ）〜（ｄ）は、補強部材７０の加工工程概略図である。まず、図１６（ａ）に示すように、帯状の金属板１００の長手方向の一側面を外側に２つの山を有する左右対称な波形１０６に切断し、その後波形１０６が形成された金属板１００に、ヒンジ軸挿通穴７３とフック５５の支持軸６３の挿通穴７８を穿設する場所となる内側垂直部１２１やねじ挿通穴７４を穿設する場所となる水平部１２２を決めるために折曲げ部１０３を決めておく。そして、ヒンジ軸挿通穴７３と挿通穴７８を内側垂直部１２１に、ねじ挿通穴７４を水平部１２２に穿設しておく（図１６（ｂ））。
次に、図１６（ａ）にて決めておいた折曲げ部１０３部分で折り曲げ加工して内側垂直部１２１と水平部１２２を形成する（図１６（ｃ））。この時の折り曲げ方向は、内側垂直部１２１と水平部１２２がほぼ垂直になるような断面略Ｌ字状とする。
また、ヒンジ軸挿通穴７３と隣りのねじ挿通穴７４との間の水平部１２２に後端曲げ部１０１を決めておく。そして、図１６（ｄ）に示すように水平部１２２を上向き、内側垂直部１２１を内側にした状態でベンド加工を施し、図示するような略円周部７１を形成する。このとき、後端曲げ部１０１部分で折り曲げ加工も行われ、ヒンジ取付垂直部１２５とヒンジ取付水平部１２６とで構成されるヒンジ取付部１２４を形成して、補強部材７０が完成する。この時、水平部の幅は図１６（ｄ）に示すように略円周部７１の前部及び後部から前後方向に連続的に増加していき、図１６（ｄ）のＢ−Ｂ断面図に示すように前部が狭いＷｂであり、図１６（ｄ）のＡ−Ａ断面図に示すように左右の部分が最大のＷａとなる。後部も狭い。
なお、略円周部７１の大きさは、中蓋１２の幅方向に近い大きさまたは内釜６の大きさと略同等にしても良い。 Next, a process for processing the reinforcing member 70 will be described. 16A to 16D are schematic diagrams of processing steps for the reinforcing member 70. FIG. First, as shown in FIG. 16A, one side surface in the longitudinal direction of the strip-shaped metal plate 100 is cut into a symmetrical waveform 106 having two peaks on the outside, and then the metal plate 100 on which the waveform 106 is formed. In addition, bending is performed to determine the inner vertical portion 121 where the hinge shaft insertion hole 73 and the insertion hole 78 of the support shaft 63 of the hook 55 are drilled, and the horizontal portion 122 where the screw insertion hole 74 is drilled. The part 103 is determined. Then, the hinge shaft insertion hole 73 and the insertion hole 78 are formed in the inner vertical portion 121, and the screw insertion hole 74 is formed in the horizontal portion 122 (FIG. 16B).
Next, the inner vertical portion 121 and the horizontal portion 122 are formed by bending the bent portion 103 determined in FIG. 16A (FIG. 16C). The bending direction at this time is a substantially L-shaped cross section so that the inner vertical portion 121 and the horizontal portion 122 are substantially vertical.
The rear end bent portion 101 is determined in the horizontal portion 122 between the hinge shaft insertion hole 73 and the adjacent screw insertion hole 74. Then, as shown in FIG. 16D, bend processing is performed with the horizontal portion 122 facing upward and the inner vertical portion 121 facing inward to form a substantially circumferential portion 71 as shown. At this time, bending processing is also performed at the rear end bending portion 101 portion, and the hinge attachment portion 124 configured by the hinge attachment vertical portion 125 and the hinge attachment horizontal portion 126 is formed, and the reinforcing member 70 is completed. At this time, the width of the horizontal portion continuously increases in the front-rear direction from the front portion and the rear portion of the substantially circumferential portion 71 as shown in FIG. 16D, and is a cross-sectional view taken along the line BB in FIG. As shown in FIG. 16, the front portion is narrow Wb, and the left and right portions are the largest Wa as shown in the AA sectional view of FIG. The rear part is also narrow.
Note that the size of the substantially circumferential portion 71 may be substantially the same as the size of the inner lid 12 in the width direction or the size of the inner hook 6.

本実施の形態に係る補強部材７０は事前に帯状の平板の長手方向の一側面を波形１０６に切断し、その後曲げ加工による断面を連続的に変化させる。この場合、ベンド加工をすることで、補強部材７０の前後方向の中間部１０７で幅が最大となり、変形の力が最も大きくかかる蓋体１０の中央部付近の幅や断面二次モーメントが前後の幅と比べ大きい構成となる。 In the reinforcing member 70 according to the present embodiment, one side surface in the longitudinal direction of the belt-shaped flat plate is cut into a corrugated shape 106 in advance, and then the cross section by bending is continuously changed. In this case, by bending, the width at the middle portion 107 in the front-rear direction of the reinforcing member 70 is maximized, and the width near the center portion of the lid 10 where the deformation force is the largest and the cross-sectional secondary moment are The structure is larger than the width.

このように構成したことにより、蓋体１０の中央部付近に大きな変形となる力が作用するが、本実施の形態においては、蓋体１０内に略円周状の補強部材７０を構成し、力の大きい中央部は変形をしにくくすることができ、圧力による蓋体１０の変形や損傷などを確実に防止することができる。 With such a configuration, a force that causes a large deformation acts near the center of the lid body 10, but in the present embodiment, a substantially circumferential reinforcing member 70 is configured in the lid body 10, The central portion having a large force can be made difficult to deform, and deformation or damage of the lid 10 due to pressure can be reliably prevented.

１炊飯器本体、２ヒンジ部、３コイル台、４電磁誘導コイル、５温度センサー、６内釜、６ａフランジ、７制御部、８操作部、９係止部、１０蓋体、１１上蓋、１２中蓋、１３内蓋、１４中蓋中間部材、１５凹部、１６開口部、１７カートリッジ、１８筒状部、１９通気穴、２０蒸気口、２１凹部、２２穴、２３蓋開閉ボタン、２４本体部、２５係止片、２６ａ，２６ｂロック棒、２７押圧部、２８ばね、３０弁室、３１開口部、３２シール部材、３３弾性体、３４蒸気通路、３５ガイド部、４０スライド部材、４１本体部、４２開口部、４３ａ，４３ｂロック部、４４円筒部、４５円板、４６突部、４７フランジ、５０ソレノイド、５１ねじ、５２可動鉄心、５３復帰ばね、５５フック、５６水平片、５７垂直片、５８ａ、５８ｂ支持腕、５９軸挿通穴、６０受け片、６１ａ、６１ｂ係止片、６２係止爪、６３支持軸、６４ばね、６５シール、７０補強部材、７１略円周部、７３ヒンジ軸挿通穴、７４ねじ挿通穴、７５ａ，７５ｂ前部補強体、７６折曲げ部、７８挿通穴、８０ねじ、８５開口部、８６内筒、８８蒸気通路、８９弁孔、９０弁座、９１調圧ボール、１００金属板、１０１後端曲げ部、１０２垂直片、１０３折曲げ部、１０４後部補強体、１０４ａ水平部、１０４ｂ垂直部、１０５ねじ挿通穴、１０６波形、１０７中間部、１１１ボス、１２１内側垂直部、１２２水平部、１２３外側垂直部、１２４ヒンジ取付部、１２５ヒンジ取付垂直部、１２６ヒンジ取付水平部、１３１リブ。 DESCRIPTION OF SYMBOLS 1 Rice cooker main body, 2 Hinge part, 3 Coil stand, 4 Electromagnetic induction coil, 5 Temperature sensor, 6 Inner hook, 6a Flange, 7 Control part, 8 Operation part, 9 Locking part, 10 Cover body, 11 Top cover, 12 Inner cover, 13 Inner cover, 14 Inner cover intermediate member, 15 Recessed part, 16 Opening part, 17 Cartridge, 18 Cylindrical part, 19 Vent hole, 20 Steam port, 21 Recessed part, 22 hole, 23 Lid opening / closing button, 24 Body part , 25 Locking piece, 26a, 26b Lock rod, 27 Pressing part, 28 Spring, 30 Valve chamber, 31 Opening part, 32 Seal member, 33 Elastic body, 34 Steam passage, 35 Guide part, 40 Slide member, 41 Body part 42 Opening, 43a, 43b Locking part, 44 Cylindrical part, 45 Disc, 46 Protruding part, 47 Flange, 50 Solenoid, 51 Screw, 52 Movable iron core, 53 , 55 hook, 56 horizontal piece, 57 vertical piece, 58a, 58b support arm, 59 shaft insertion hole, 60 receiving piece, 61a, 61b locking piece, 62 locking claw, 63 support shaft, 64 spring, 65 seal, 70 Reinforcing member, 71 Approximate circumference, 73 Hinge shaft insertion hole, 74 Screw insertion hole, 75a, 75b Front reinforcement, 76 Bending part, 78 Insertion hole, 80 Screw, 85 Opening, 86 Inner cylinder, 88 Steam passage, 89 valve hole, 90 valve seat, 91 pressure adjusting ball, 100 metal plate, 101 rear end bent portion, 102 vertical piece, 103 bent portion, 104 rear reinforcement, 104a horizontal portion, 104b vertical portion, 105 screw Insertion hole, 106 corrugated, 107 middle part, 111 boss, 121 inner vertical part, 122 horizontal part, 123 outer vertical part, 124 hinge mounting part, 125 hinge mounting vertical Part, 126 hinge mounting horizontal part, 131 rib.

Claims

内部に内釜を収容し、後部側上部にヒンジ部を有する炊飯器本体と、
後端部が前記ヒンジ部を介して前記炊飯器本体に枢支され、この炊飯器本体の上部を開閉自在に覆う蓋体と、
この蓋体に配設された補強部材と、を備え、
この補強部材は、略円周状に構成され、断面形状として少なくとも垂直部とこの垂直部の一端から略垂直に延設された水平部とを有する略円周部と、この略円周部の両端から外方へほぼ平行に延設され、断面形状として少なくとも垂直部とこの垂直部の一端から略垂直に延設された水平部とを有する一対の略直線部と、を備え、前記一対の略直線部の垂直部は対向する位置に前記ヒンジ部と嵌合する穴を有することを特徴とする炊飯器。 A rice cooker body that houses an inner pot inside and has a hinge on the upper part on the rear side,
A rear end is pivotally supported by the rice cooker body via the hinge part, and a lid that covers the upper part of the rice cooker body in an openable and closable manner,
A reinforcing member disposed on the lid,
The reinforcing member is configured in a substantially circumferential shape, and has a substantially circumferential portion having at least a vertical portion and a horizontal portion extending substantially vertically from one end of the vertical portion as a cross-sectional shape, and the substantially circumferential portion. A pair of substantially straight portions that extend substantially parallel to the outside from both ends and have at least a vertical portion and a horizontal portion that extends substantially perpendicularly from one end of the vertical portion as a cross-sectional shape, The vertical portion of the substantially straight portion has a hole that fits into the hinge portion at an opposing position.

前記補強部材の略円周部の両端を別体の補強部材で結合したことを特徴とする請求項１に記載の炊飯器。 The rice cooker according to claim 1, wherein both ends of the substantially circumferential portion of the reinforcing member are joined by separate reinforcing members.

前記補強部材の略円周部において、この略円周部が形成する略円周状の円の中心と前記略円周部の両端間の中心を結ぶ線とほぼ垂直を成す部分の水平部の幅または断面二次モーメントが他の部分の水平部のそれよりも大きくなるように形成されることを特徴とする請求項１または請求項２に記載の炊飯器。 In the substantially circumferential portion of the reinforcing member, the horizontal portion of the portion that is substantially perpendicular to the line connecting the center of the substantially circumferential circle formed by the approximately circumferential portion and the center between both ends of the approximately circumferential portion. The rice cooker according to claim 1 or 2, wherein a width or a cross-sectional second moment is formed to be larger than that of a horizontal portion of another portion.

前記補強部材の断面形状を略コの字状としたことを特徴とする請求項１乃至３のいずれかに記載の炊飯器。 The rice cooker according to any one of claims 1 to 3, wherein a cross-sectional shape of the reinforcing member is substantially U-shaped.

前記補強部材の断面形状を略Ｌの字状としたことを特徴とする請求項１乃至３のいずれかに記載の炊飯器。 The rice cooker according to any one of claims 1 to 3, wherein the reinforcing member has a substantially L-shaped cross section.

前記補強部材の断面は、コの字状の平行する片の一片がもう一片よりも短いことを特徴とする請求項１乃至３のいずれかに記載の炊飯器。 4. The rice cooker according to claim 1, wherein a cross-section of the reinforcing member is such that one of the U-shaped parallel pieces is shorter than the other piece. 5.

前記補強部材の外径が内釜の外径と略同等としたことを特徴とする請求項１乃至６のいずれかに記載の炊飯器。 The rice cooker according to any one of claims 1 to 6, wherein an outer diameter of the reinforcing member is substantially equal to an outer diameter of the inner pot.

前記補強部材の係止構造が釜の前後方向長さの中間よりも前方に位置したことを特徴とする請求項１乃至７のいずれかに記載の炊飯器。 The rice cooker according to any one of claims 1 to 7, wherein the reinforcing member locking structure is located in front of the middle of the longitudinal length of the hook.

前記補強部材の内部に圧力調整弁、圧力安全弁、カートリッジを位置したことを特徴とする請求項１乃至８のいずれかに記載の炊飯器。 The rice cooker according to any one of claims 1 to 8, wherein a pressure regulating valve, a pressure safety valve, and a cartridge are located inside the reinforcing member.

前記補強部材の断面曲げ部の外側Ｒを板厚よりも大きくしたことを特徴とする請求項１乃至９のいずれかに記載の炊飯器。 The rice cooker according to any one of claims 1 to 9, wherein an outer side R of a cross-sectional bent portion of the reinforcing member is made larger than a plate thickness.

前記補強部材の円周半径Ｒを断面幅Ｗに対してＲ≧４Ｗとしたことを特徴とする請求項１乃至１０のいずれかに記載の炊飯器。 11. The rice cooker according to claim 1, wherein a circumferential radius R of the reinforcing member is set to R ≧ 4 W with respect to a cross-sectional width W. 11.

前記補強部材に沿って中蓋に周方向のリブを形成したことを特徴とする請求項１乃至１１のいずれかに記載の炊飯器。 The rice cooker according to any one of claims 1 to 11, wherein a rib in the circumferential direction is formed on the inner lid along the reinforcing member.

前記補強部材の内周に沿って中蓋に周方向のリブを形成したことを特徴とする請求項１２のいずれかに記載の炊飯器。 The rice cooker according to any one of claims 12 to 13, wherein a circumferential rib is formed on the inner lid along the inner periphery of the reinforcing member.

前記補強部材の外周に沿って中蓋に周方向のリブを形成したことを特徴とする請求項１２に記載の炊飯器。 The rice cooker according to claim 12, wherein a rib in the circumferential direction is formed on the inner lid along the outer periphery of the reinforcing member.

前記補強部材の下部の中蓋に周方向のリブを形成し、リブ上に補強部材と、この補強部材を前記リブにとめるねじ取り付け部を設けたことを特徴とする請求項１２に記載の炊飯器。 The rice cooking according to claim 12, wherein a circumferential rib is formed on an inner lid at a lower portion of the reinforcing member, a reinforcing member is provided on the rib, and a screw attaching portion for fixing the reinforcing member to the rib is provided. vessel.