Pressure heating cooker

Abstract

To provide a pressure heating cooker having a high assembling yield by thickening a fitting claw in an opening and closing lid.SOLUTION: An opening and closing lid 200 of a rice cooker 10 includes an inner lid 210 that covers an inner pot C, a lid frame 220 to which the inner lid 210 is detachably attached, and an outer lid 230 attached to the lid frame 220. A lid opening and closing mechanism 300 includes a locking member 310 provided on the lid frame 220 of the opening and closing lid 200 that engages with a locked portion 110 provided on a rice cooker body 100, and an engagement release unit 320 that releases the engagement between the locking member 310 and the locked portion 110 of the rice cooker body 100. The engagement release unit 320 includes a support member 321 provided on the outer lid 230 for pressing the locking member 310, and an opening and closing button 322 that is exposed from the outer lid 230 and pressed. The support member 321 provided on the outer lid 230 includes a claw part 321d that is fitted to a fitted part 322a formed in the opening and closing button 322.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to a pressure cooking device, and more particularly to a pressure cooking device that applies pressure and heat to ingredients in an inner pot. [Background technology]

[0002] In a conventional pressure heating cooker that includes a cooker body that houses an inner pot and an opening / closing lid that engages with the cooker body to cover the inner pot so that it can be opened and closed freely, and that pressurizes and heats the ingredients in the inner pot, there is known a cooker in which a lid opening / closing button that pressurizes and opens the opening / closing lid has a locking claw that locks into the bottom surface of a recess formed in the upper lid of the opening / closing lid (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-75411 (see especially FIG. 4) Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the conventional pressure cookers described above, it is difficult to make the locking claws thick due to the arrangement of the lid opening / closing button relative to the surrounding components, and there is a risk that the locking claws will crack when attempting to engage the locking claws of the lid opening / closing button with the bottom surface of the recess formed in the upper lid during assembly of the pressure cooker, leaving room for further improvement in improving the yield of assembly with the lid opening / closing button when manufacturing the pressure cooker.

[0005] Therefore, the present invention solves the problems of the prior art as described above, and the object of the present invention is to provide a pressure cooking appliance having thick mating claws that engage with the opening and closing button of the opening and closing lid, thereby achieving a high assembly yield of the disengagement unit. [Means for solving the problem]

[0006] The invention of claim 1 relates to a pressure cooking cooker comprising a cooker body that houses an inner pot, an open / close lid that engages with the cooker body to cover the inner pot in an openable / closable manner, a lid opening / closing mechanism that opens and closes the open / close lid relative to the cooker body, and a pressure adjusting unit that is disposed within the open / close lid and adjusts the pressure within the cooking space formed by the inner pot and the open / close lid, wherein the open / close lid has an inner lid that covers the inner pot, a lid frame to which the inner lid is detachably attached, and an outer lid that is attached to the lid frame, and the lid opening / closing mechanism is attached to the cooker body. The above-mentioned problem is solved by having a locking member provided on the lid frame of the opening / closing lid that engages with a provided locking portion, and an engagement release unit that releases the engagement between the locking member and the locking portion, the engagement release unit having a rectangular plate-shaped support member provided on the outer lid that presses the locking member, and an opening / closing button that is assembled to the support member and can be freely pressed while exposed from the outer lid, and the support member provided on the outer lid has an engagement claw that engages with the engagement portion formed on the opening / closing button.

[0007] The invention of claim 2 solves the above-mentioned problem by, in addition to the configuration of the pressure cooking device described in claim 1, having a bending rigidity of the support member that is lower than the bending rigidity of the open / close button.

[0008] The invention of claim 3 further solves the above-mentioned problem by, in addition to the configuration of the pressure cooking device described in claim 1 or claim 2, coating the open / close button with a thin metal film.

[0009] The invention of claim 4 further solves the above-mentioned problem by, in addition to the configuration of the pressure cooking cooker described in claim 3, the support member being axially supported so as to be freely rotatable relative to the outer lid. [Effects of the Invention]

[0010] According to the pressure-cooker of the invention of claim 1, the support member provided on the outer lid has an engaging claw that engages with the engaging portion formed on the opening / closing button, so that the engaging claw is provided on the support member inside the opening / closing lid, which does not form the exterior, rather than on the opening / closing button, which forms the exterior.Therefore, compared to conventional cases where the opening / closing button has an engaging claw, the engaging claw that engages with the opening / closing button of the opening / closing lid can be made thicker, thereby improving the yield of assembling the disengagement unit when manufacturing the pressure-cooker.

[0011] According to the pressure cooking cooker of the invention of claim 2, in addition to the effects achieved by the pressure cooking cooker of the invention of claim 1, the bending rigidity of the support member is lower than the bending rigidity of the opening / closing button, so that the support member having the engaging claws is more susceptible to bending deformation than the opening / closing button having the mating portion, and therefore the engaging claws are less likely to crack due to bending deformation when they engage with the mating portion of the opening / closing button.

[0012] According to the pressure cooking device of the invention of claim 3, in addition to the effects achieved by the pressure cooking device of the invention of claim 1 or claim 2, the opening and closing button is coated with a thin metal film, which gives the opening and closing button a glossy appearance, thereby improving the appearance of the pressure cooking device while also improving the yield of assembly of the disengagement unit in the pressure cooking device.

[0013] According to the pressure cooking device of the invention of claim 4, in addition to the effects achieved by the pressure cooking device of the invention of claim 3, the open / close button is coated with a thin metal film and the support member is rotatably supported on the outer lid, so that the open / close button that is exposed to the outside (i.e., where aesthetics are desired) does not rotate relative to the outer lid, while the support member that is not exposed to the outside (i.e., where aesthetics are not desired) rotates relative to the outer lid.This gives the open / close button a glossy finish, improving the appearance of the pressure cooking device, while allowing the open / close button to be pressed smoothly against the open / close lid. [Brief explanation of the drawings]

[0014] [Figure 1]1 is a perspective view of a rice cooker 10 according to an embodiment of the present invention with an opening / closing lid 200 in an open state. [Figure 2] 1 is a perspective view of a rice cooker 10 according to an embodiment of the present invention with an opening / closing lid 200 closed. [Figure 3] FIG. 2 is an enlarged cross-sectional view of a main part of FIG. [Figure 4] 2 is a partially cutaway perspective view of the opening and closing lid 200 of the rice cooker 10 shown in FIG. [Figure 5] FIG. 5 is a perspective view of the locking member 310 shown in FIG. 4. [Figure 6] 3 is a partially cutaway perspective view of a top plate 232 in the rice cooker 10 shown in FIG. 2. [Figure 7] Cross-sectional view taken along line VII-VII in Figure 4. [Figure 8] FIG. 7 is an exploded perspective view of the disengagement unit 320 shown in FIG. 6. [Figure 9] FIG. 7 is a right side view of the disengagement unit 320 shown in FIG. 6. [Figure 10A] XA-XA cross section of Figure 8. [Figure 10B] XB-XB cross-sectional view of Figure 10A. [Figure 11] 10 is a cross-sectional view taken along the line XI-XI in FIG. 2 to explain the opening operation of the opening / closing cover. [Figure 12A] 1A is a cross-sectional view taken along the line XIIA-XIIA in FIG. 2, illustrating the opening operation of the opening / closing cover. [Figure 12B] 1B is a cross-sectional view of the opening and closing cover taken along the line XIIB-XIIB in FIG. 2, illustrating the opening operation of the opening and closing cover. DETAILED DESCRIPTION OF THE INVENTION

[0015] The pressure cooker of the present invention comprises a main body that houses an inner pot, an openable / closeable lid that engages with the main body to cover the inner pot in an openable / closable manner, a lid opening / closing mechanism that opens and closes the openable / closeable lid relative to the main body, and a pressure adjusting unit that is disposed within the openable / closeable lid and adjusts the pressure within the cooking space formed by the inner pot and the openable / closeable lid. The openable / closeable lid has an inner lid that covers the inner pot, a lid frame to which the inner lid is detachably attached, and an outer lid that is attached to the lid frame, and the lid opening / closing mechanism is disposed on the lid frame of the openable / closeable lid that engages with a locking portion provided on the cooker main body. The specific embodiment can be any as long as it has a locking member and a disengagement unit that releases the engagement between the locking member and the locked portion, the disengagement unit having a rectangular plate-shaped support member provided on the outer lid that presses the locking member, and an open / close button that is assembled to the support member and can be freely pressed while exposed from the outer lid, the support member provided on the outer lid has an engaging claw that engages with the engaging portion formed on the open / close button, and the engaging claw that engages with the open / close button on the open / close lid is thick so that the yield of assembly with the open / close button is high. [Example]

[0016] Hereinafter, a rice cooker 10, which is an induction heating type pressure cooking device according to one embodiment of the present invention, will be described with reference to Figs. 1 to 12B.

[0017] <1. Basic structure of pressure cooker> First, the basic configuration of the rice cooker 10 will be described with reference to FIGS. Figure 1 is an oblique view of a rice cooker 10 according to one embodiment of the present invention with the opening / closing lid 200 open, Figure 2 is an oblique view of a rice cooker 10 according to one embodiment of the present invention with the opening / closing lid 200 closed, and Figure 3 is an enlarged cross-sectional view of the essential parts of Figure 1.

[0018] The rice cooker 10 comprises a rice cooker body (cooking device body) 100 that houses an inner pot C, an open / close lid 200 that engages with the rice cooker body 100 and covers the inner pot C so that it can be opened and closed freely, and a pressure adjustment unit (not shown) that is arranged within the open / close lid 200 and that varies the pressure within the cooking space AC formed by the inner pot C and the open / close lid 200.

[0019] The rice cooker body 100 has a latched portion 110 that engages with the opening / closing lid 200, as shown in FIG.

[0020] <2. Opening and closing lid> Next, the opening / closing cover 200 will be described with reference to FIGS.

[0021] As shown in FIG. 1, the opening / closing lid 200 has an inner lid 210 that covers the inner pot C, a lid frame 220 to which the inner lid 210 is removably attached, and an outer lid 230 that is attached to the lid frame 220.

[0022] The lid frame 220 is provided with a pressure adjusting section (not shown).

[0023] As shown in FIG. 2, the outer lid 230 has an outer lid frame 231 attached to the lid frame 220, and a top plate 232 attached to the outer lid frame 231 to form the top surface of the outer lid 230.

[0024] A microcomputer unit (not shown) is built into the inside of the outer lid frame 231. The top plate 232 is formed with steam holes 232a for discharging steam generated in the inner pot C to the outside, an information display window 232b for displaying information about the rice cooker 10, and operation keys 232c for operating the rice cooker 10.

[0025] <3. Lid opening / closing mechanism> Next, the lid opening / closing mechanism 300 that opens and closes the opening / closing lid 200 relative to the rice cooker body 100 will be described with reference to FIGS. Figure 4 is a partially cutaway oblique view of the opening / closing lid 200 of the rice cooker 10 shown in Figure 1, Figure 5 is a partially cutaway oblique view of the locking member 310 shown in Figure 4, Figure 6 is a partially cutaway oblique view of the top plate 232 of the rice cooker 10 shown in Figure 2, and Figure 7 is a cross-sectional view taken along line VII-VII of Figure 4. In addition, the opening / closing cover 200 is not omitted in FIG.

[0026] As shown in Figures 4 and 6, the lid opening / closing mechanism 300 is composed of a locking member 310 (see Figure 4) provided on the lid frame 220 of the opening / closing lid 200 that engages with the locking portion 110 provided on the rice cooker main body 100, and a disengagement unit 320 (see Figure 6) that disengages the locking member 310 of the opening / closing lid 200 from the locking portion 110 of the rice cooker main body 100.

[0027] <3.1. Locking member> As shown in Figures 4 and 5, the locking member 310 has a bearing portion 311 through which the shaft S is inserted so as to be rotatable relative to the shaft S inserted into the support portion 221 of the lid frame 220, a pressure-receiving portion 312 (see Figure 4) located above the bearing portion 311 in side view and abutting the disengagement unit 320, and a locking portion 313 located below the bearing portion 311 in side view and engaging with the locked portion 110 of the rice cooker body 100.

[0028] As shown in FIG. 7, a torsion spring SP is inserted through the shaft S. As shown in FIG. 7, one end of this torsion spring SP abuts against the locking member 310 and the other end abuts against the lid frame 220. Therefore, even if the position of the locking member 310 changes due to the opening / closing button 322 described later being pressed, the torsion spring SP will restore the locking member 310 to the position shown in Figure 7, i.e., the position in which the locking portion 313 is approximately parallel to the bottom surface 231b of the outer lid frame body 231 of the outer lid 230.

[0029] <3.2. Disengagement unit> Next, the disengagement unit 320 will be described in detail with reference to FIGS. 6 and 8 to 10B. 8 is an oblique exploded view of the disengagement unit 320 shown in FIG. 4, FIG. 9 is a right side view of the disengagement unit 320 shown in FIG. 6, FIG. 10A is a cross-sectional view taken along XA-XA in FIG. 8, and FIG. 10B is a cross-sectional view taken along XB-XB in FIG. 10A.

[0030] As shown in Figure 8 etc., the disengagement unit 320 is composed of a support member 321 (see also Figure 6) suspended from a hanging portion 231a formed on the outer lid frame 231 of the outer lid 230 and axially supported so as to be freely rotatable relative to the outer lid 230, an opening / closing button 322 (see also Figure 2) exposed from the outer lid 230 and pressed down, two compression coil springs (elastic members) 323 arranged between the support member 321 and the opening / closing button 322, and a double torsion spring 324 inserted into the two cylindrical torsion spring support portions 321a of the support member 321.

[0031] The support member 321 is a rectangular plate-shaped resin member, and has lower bending rigidity than the open / close button 322 . As shown in FIG. 8, the support member 321 has a torsion spring support portion 321a that protrudes inward on the rear end side, and a rotation shaft portion 321b that protrudes outward. As shown in FIG. 6, this rotation shaft portion 321b is rotatably supported by a hanging portion 231a of the outer lid 230, and the front side of the support member 321 is vertically rotatable around this rotation shaft portion 321b.

[0032] As shown in FIG. 8, the support member 321 has a spring accommodating portion 321c for accommodating a compression coil spring 323 on the front end side. Furthermore, as shown in FIGS. 8 to 10A, the support member 321 has claw portions (engagement claws) 321d extending outward on both sides at the front end side. 10A, the support member 321 has a pressing portion 321e that comes into contact with the locking member 310 and presses the locking member 310. As shown in FIG.

[0033] The open / close button 322 is coated with a thin metal film. 9 and 10A, the open / close button 322 has rectangular hole-shaped fitted portions 322a formed on both sides thereof, into which the claw portions 321d of the support member 321 are fitted. Further, on the rear end side of the open / close button 322, a locking member abutment portion (rotation restricting rib) 322b extending in the vertical direction is formed.

[0034] When the open / close button 322 configured in this way is pressed down, the open / close button 322 comes into contact with a depression amount restriction member 330 of the lid opening / closing mechanism 300 provided on the lid frame 220 (see FIGS. 4, 6 and 7). Therefore, the range to which the open / close button 322 can be depressed is restricted by the depression amount restriction member 330 .

[0035] As shown in FIG. 10A, the compression coil spring 323 has an upper end that abuts against the open / close button 322 and a lower end that abuts against the support member 321. Therefore, the compression coil spring 323 biases the open / close button 322 in a direction away from the support member 321 .

[0036] The double torsion spring 324 has a spring constant smaller than that of the compression coil spring 323, and as shown in FIG.

[0037] <4. Opening operation of the opening and closing cover> Next, with reference to Figures 11 to 12B, the opening operation of the opening / closing lid 200, which opens the opening / closing lid 200 to place ingredients into the inner pot C from the state shown in Figure 2 before pressurizing and heating, will be described. Figure 11 is a diagram explaining the opening operation of the opening / closing cover using the XI-XI cross section of Figure 2, Figure 12A is a diagram explaining the opening operation of the opening / closing cover using the XIIA-XIIA cross section of Figure 2, and Figure 12B is a diagram explaining the opening operation of the opening / closing cover using the XIIB-XIIB cross section of Figure 2.

[0038] To open the opening / closing lid 200, the user of the rice cooker 10 applies force F to the opening / closing button 322 and presses down the opening / closing button 322 as shown in FIG. At this time, the open / close button 322, the compression coil spring 323, and the support member 321 sink together, and the pressing portion 321e of the support member 321 comes into contact with the pressure receiving portion 312 of the locking member 310.

[0039] When the open / close button 322 is further pressed down, the support member 321 rotates about the axis S so that the pressure-receiving portion 312 sinks, as shown in FIG. 12A. At this time, as shown in FIG. 12B, the engagement between the locking portion 313 of the locking member 310 and the locked portion 110 of the rice cooker body 100 is released, allowing the opening and closing lid 200 to be opened.

[0040] <5. Effects of Rice Cooker 10> According to the rice cooker 10 as a pressure-cooking cooker which is one embodiment of the present invention described above, the support member 321 provided on the outer lid 230 has a claw portion 321d which is a fitting claw that fits into the fitting portion 322a formed on the open / close button 322. As a result, the claw portion 321d is provided on the support member 321 inside the open / close lid 200 which does not form the exterior, rather than on the open / close button 322 which forms the exterior. Therefore, compared to when the open / close button has a claw portion as in the conventional case, the claw portion 321d can be made thicker to improve the yield of assembling the disengagement unit 320 when manufacturing the rice cooker 10.

[0041] Furthermore, since the bending rigidity of the support member 321 is lower than that of the open / close button 322, the support member 321 having the claw portion 321d is more susceptible to bending deformation than the open / close button 322 having the mating portion 322a, and therefore the claw portion 321d is less likely to crack due to bending deformation when mating with the mating portion 322a of the open / close button 322.

[0042] Furthermore, since the opening / closing button 322 is coated with a thin metal film, the opening / closing button 322 has a glossy appearance, which improves the appearance of the rice cooker 10 while also improving the assembly yield of the disengagement unit 320 in the rice cooker 10.

[0043] Furthermore, since the open / close button 322 is coated with a thin metal film and the support member 321 is rotatably supported relative to the outer lid 230, the open / close button 322 that is exposed to the outside (i.e., where an aesthetic appearance is desired) does not rotate relative to the outer lid 230, while the support member 321 that is not exposed to the outside (i.e., where an aesthetic appearance is not desired) rotates relative to the outer lid 230. This gives the open / close button 322 a glossy finish, improving the appearance of the rice cooker 10, while allowing the open / close button 322 to be pressed smoothly against the open / close lid 200.

[0044] <Modification> The rice cooker 10 as a pressure heating cooker according to one embodiment of the present invention has been described above, but the pressure heating cooker of the present invention is not limited to the rice cooker 10 of the above-described embodiment.

[0045] For example, in this embodiment, the support member 321 was pivotally supported so as to be freely rotatable relative to the outer lid 230, but the open / close button may be provided with a rotating shaft portion and hung from the outer lid, so that the open / close button is freely rotatable relative to the outer lid. [Explanation of symbols]

[0046] 10. Rice cooker (pressure cooker) 100 ··· Rice cooker body (cooker body) 110... Locked part 200 ··· Opening and closing lid 210 Inner lid 220 Lid frame 221... Support part 230 ··· Outer lid 231 Outer cover frame 231a··· Hanging part 231b... Bottom 232 ··· Top plate 232a Steam vent 232b Information display window 232c··· Operation key 300... Lid opening / closing mechanism 310... Locking member 311...Bearing section 312 Pressure receiving part 313 Locking portion 320 ··· Disengagement unit 321 Support member 321a Torsion spring support 321b Rotating shaft 321c··· Spring housing 321d··· Claw portion (fitting claw) 321e··· Pressing part 322 ··· Open / close button 322a... Mated part 322b Locking member contact portion (rotation restriction rib) 323 Compression coil spring (elastic member) 324 Double Torsion Spring 330 ··· Push-down amount control member C... Inner pot AC...Cooking space S...axis SP...torsion spring F...force

Claims

1. A pressure cooking device comprising a cooking device body that accommodates an inner pot, an opening / closing lid that engages with the cooking device body and covers the inner pot so as to be able to open and close freely, a lid opening / closing mechanism that opens and closes the opening / closing lid relative to the cooking device body, and a pressure adjusting unit that is disposed within the opening / closing lid and that varies the pressure within a cooking space formed by the inner pot and the opening / closing lid, The opening and closing lid has an inner lid that covers the inner pot, a lid frame to which the inner lid is detachably attached, and an outer lid that is attached to the lid frame, The lid opening / closing mechanism has a locking member provided on a lid frame of the opening / closing lid that engages with a locking portion provided on the cooking appliance body, and an engagement release unit that releases the engagement between the locking member and the locking portion, the disengagement unit includes a rectangular plate-shaped support member provided on the outer lid and pressing the locking member, and an open / close button assembled to the support member and operable to be freely depressed while exposed from the outer lid, A pressure cooking apparatus characterized in that a support member provided on the outer lid has a fitting claw that fits into a fitting portion formed on the open / close button.

2. 2. The pressure cooking device according to claim 1, wherein the bending rigidity of the support member is lower than the bending rigidity of the open / close button.

3. 3. The pressure cooking device according to claim 1, wherein the open / close button is coated with a thin metal film.

4. 4. The pressure cooking apparatus according to claim 3, wherein the support member is axially supported so as to be rotatable relative to the outer lid.

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