JP2017202147A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating cooker having sufficient rotation locking strength to lock a lid body rotated in an opening direction by a cooker body.SOLUTION: A heating cooker 1 includes a cooker body 10 for accommodating a pot 3, a lid body 11 configured in the cooker body so as to be rotated around a hinge pin 8, and a metal body reinforcing plate 50 constituting part of the cooker body. A metal hinge reinforcing part 70 disposed on the body reinforcing plate for pivotally supporting the hinge pin is formed with a rotation locking part 74, and a metal lid reinforcing plate 40 constituting part of the lid body is formed with a rotation locked part 48 so that when the lid body is rotated in an opening direction, the rotation locked part is locked by the rotation locking part.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a cooking device that heats and cooks a food set in a pan.

  For example, in patent document 1, the rice cooker which has the cooking appliance main body by which the accommodating part which accommodates a pan was provided inside, and the cover body which covers the upper surface of a pan is disclosed. The lid is configured to be openable and closable with respect to the cooker body.

JP2015-39516A

  In the rice cooker of patent document 1, the cover body is urged | biased by the hinge spring provided in the hinge part which pivotally supports a cover body in the open direction. When the opening operation of the lid is performed, the lid rotates in the opening direction by the biasing force of the hinge spring. The rotation of the biased lid is stopped when the pivoted locking portion on the lid side is locked to the rotation locking portion on the cooker main body side. For example, the lid-side rotated locking portion is provided on the lid reinforcing member, the cooker body-side rotating locking portion is provided on the cooker body shoulder member, and the lid-side rotated locking The portion is locked to the rotation locking portion on the cooker main body side.

  Since the reinforcing member of the lid is made of, for example, a metal material, there is no particular problem in strength. On the other hand, the shoulder member of the cooker main body is made of a synthetic resin material to be molded into a complicated shape, so that it cannot be said that the strength is sufficient. Therefore, conventionally, measures such as increasing the thickness of the stopper portion of the shoulder member and forming reinforcing ribs on the stopper portion of the shoulder member have been taken. However, since the stopper portion of the shoulder member is made of a synthetic resin material, there is a limit to improving its strength. Therefore, a significant increase in strength is desired in the rotation locking structure that locks the lid that is rotated in the opening direction.

  Therefore, the technical problem to be solved by the present invention is to provide a heating cooker having sufficient rotation locking strength to lock the lid rotated in the opening direction with the cooker body. .

  In order to solve the above technical problem, according to the present invention, the following cooking device is provided.

That is, the cooking device according to the present invention is
A cooker body containing a pan,
A lid configured to be pivotable to the cooker body around a hinge pin;
A metal trunk reinforcing plate constituting a part of the cooker body,
The metal hinge reinforcing portion that is disposed on the trunk reinforcing plate and pivotally supports the hinge pin is formed with a rotation locking portion, and a metal lid reinforcing plate that constitutes a part of the lid body Is formed with a pivoted locking portion,
When the lid is rotated in the opening direction, the rotation locking portion is locked by the rotation locking portion.

  In this invention, when the lid body is rotated in the opening direction, the rotation locking portion formed on the metal lid reinforcing plate is the rotation locking portion formed on the metal hinge reinforcing portion. Since it has a metal-to-metal rotation locking structure, sufficient rotation locking strength can be ensured. Therefore, the heating cooker has sufficient rotation locking strength to lock the lid that is rotated in the opening direction with the cooker body.

  It is preferable that the rotation locking portion is formed above a bearing hole that pivotally supports the hinge pin in the hinge reinforcing portion. In this way, the distance between the location of the lid reinforcing plate that contacts the rotation locking portion and the hinge pin that is the rotation axis can be ensured, so that the lid can be opened smoothly.

  It is preferable that a non-metallic engagement receiving portion is disposed between the rotation engagement portion and the rotation engagement portion. If it does in this way, it will prevent that the metal rotation latching | locking part collides with a metal rotation latching | locking part, and the collision sound of metals generate | occur | produces.

  It is preferable that the latch receiving portion is formed on a synthetic resin shoulder cover disposed above the hinge connection portion of the synthetic resin shoulder member. In this way, since the shoulder cover is a separate member from the hinge connection portion of the shoulder member, the hinge connection portion of the shoulder member made of synthetic resin prevents a decrease in strength and does not impair the moldability. .

  It is preferable that the shoulder cover has an inclined portion inclined obliquely downward toward the pan. In this way, even if the liquid adhering to the inner surface of the lid body drips when the lid body is opened, it is prevented from being introduced into the hinge connection structure by guiding it to the pan side, and the hinge connection structure Can be blindfolded.

  In the heating cooker according to the present invention, when the lid is rotated in the opening direction, the rotation locking portion formed on the metal lid reinforcing plate is the rotation formed on the metal hinge reinforcing portion. Since it is locked by the dynamic locking portion and has a metal-to-metal rotation locking structure, sufficient rotation locking strength can be ensured. Therefore, the heating cooker has sufficient rotation locking strength to lock the lid that is rotated in the opening direction with the cooker body.

The perspective view which shows the heating cooker which concerns on one Embodiment of this invention, and shows the open state of a cover body. The perspective view which shows the closed state of a cover body. The perspective view which shows the principal part of a cover body and a cooking appliance main body. The perspective view which shows the trunk | drum reinforcement board arrange | positioned in the cooking appliance main body. The expanded view of the trunk | drum reinforcement board shown in FIG. The perspective view which looked at the trunk | drum reinforcement board shown in FIG. 4 from back lower direction. The perspective view which expanded the principal part of FIG. The perspective view which looked at the rotation latching structure around a hinge pin from back. The perspective view which shows the principal part of the hinge pin which concerns on one Example. The perspective view which shows the principal part of the hinge pin which concerns on a modification.

  Below, the pressure type rice cooker 1 which concerns on one Embodiment of this invention is demonstrated, referring FIGS. 1-10.

  FIG. 1 is a perspective view showing a pressure rice cooker (heating cooker) 1 according to an embodiment and showing an open state of a lid 11. FIG. 2 is a perspective view showing the closed state of the lid 11.

  The pressure-type rice cooker 1 shown in FIG.1 and FIG.2 is the rice cooker main body (cooker main body) 10 which detachably accommodates the cooking pan 3 heated, for example by induction heating, and this rice cooker main body 10 And a lid 11 that is rotatably arranged.

  The rice cooker body 10 includes an exterior body having a cylindrical body 12, a bottom body 22 that closes a lower end opening of the body 12, and a shoulder member 32 that is attached to cover the upper end opening of the body 12. Yes. The upper portion of the shoulder member 32 is partially covered with a decorative cover 34. The upper part of the outer periphery of the shoulder member 32 is covered with a body decoration body 36. A heater (for example, an induction heating coil) for heating the lower portion of the pan 3 and a pan temperature sensor for detecting the temperature of the pan 3 are disposed below the shoulder member 32. On the rear side of the shoulder member 32, a hinge connection portion 21 for connecting the lid 11 so as to be rotatable is provided.

  A shoulder engaged portion 45 having a guide portion 46 and an engagement opening (engaged portion) 47 is provided on the front side of the shoulder member 32. The guide portion 46 is an inclined surface extending obliquely upward toward the rear side where the hinge pin 8 is located, and guides the engagement claw portion (engagement portion) 23 constituting one of the lock members to the engagement opening 47. The engagement opening 47 constituting the other side of the lock member is an opening that receives the engagement claw portion 23 and engages with the engagement claw portion 23. Thus, the engagement opening 47 is formed in the rice cooker body 10, and the engagement claw portion 23 is formed in the lid 11. A control board (not shown) is disposed in the rice cooker body 10. A handle (not shown) is attached to the side surface of the body 12.

  The lid 11 is attached so as to be rotatable about the hinge pin 8 of the hinge connection portion 21, and closes the opening of the rice cooker body 10 when closed with respect to the rice cooker body 10. The lid 11 includes an exterior body having an inner member 26 located on the side of the pan 3 in the closed state and an outer member 25 that covers the upper outer side of the inner member 26. The inner member 26 is provided with a heat radiating plate 18, a lid heater (not shown), and an inner lid (not shown) that is detachably attached. When the lid 11 is closed with respect to the rice cooker body 10, the inner lid of the lid 11 closes the upper end opening 4 of the pan 3. The inner lid is not limited to a configuration that can be attached to and detached from the lid 11, and a configuration in which the inner lid cannot be detached from the lid 11 may be used.

  As shown in FIG. 2, the lid body 11 has a steam discharge port 17 that is an outlet of the exhaust passage on the rear side of the outer member 25. Inside the lid body 11, a lid body temperature sensor (not shown) for detecting the temperature in the pan 3 is disposed. Further, an operation unit 19 having a plurality of input switches and a display unit 15 such as a liquid crystal display panel for displaying the operation status and the operation status are arranged on the front side of the upper panel 14. Heating (energization) by the heater is controlled by a microcomputer (control unit) mounted on the control board based on temperature measurement by the temperature sensor. The operation unit 19 and the display unit 15 are connected to a microcomputer, and data input / output is controlled by the microcomputer.

  The inner member 26 of the lid 11 is rotatably attached to a hinge connection portion 21 formed on the rear side of the rice cooker body 10. The lid 11 is urged in the opening direction by a hinge spring (not shown) inserted through the hinge pin 8. In addition, the lid 11 is configured to be slowly opened by a damper incorporated in the drive unit 7. A heat radiating plate 18 is disposed at a position where the inner member 26 faces the pan 3 in the closed state. A lid heater (not shown) for heating the inside of the pan 3 is disposed on the upper side surface of the heat radiating plate 18. A hinge cover 28 is attached to the rear side of the rice cooker body 10 to cover the portion where the lid 11 is attached by the hinge pins 8.

  An opening operation member 16 for opening the lid body 11 is disposed on the front side of the outer member 25 of the lid body 11. The opening operation member 16 includes, on the inner surface side thereof, a pressing portion for rotating the engagement claw portion 23 that is in an engagement lock state with respect to the engagement opening 47 in the release direction. The opening operation member 16 is biased upward by a kick spring (not shown). A closing operation member 13 that functions as a switch for automatically closing the lid 11 is disposed on the front side of the outer member 25. A drive unit 7 is provided on the rear side of the rice cooker body 10 and below the hinge connection portion 21. When the closing operation member 13 is pressed, the lid body 11 is rotationally driven in the closing direction by the electric motor built in the drive unit 7, and the lid body 11 is automatically closed. According to the said structure, the closing operation | movement of the cover body 11 can be performed automatically and smoothly.

  Next, a description will be given of the metal reinforcing portion disposed in the pressure rice cooker 1 in order to resist a large force caused by steam generated during cooking. The reinforcing portions are respectively disposed on the engaged portion 47 side and the hinge pin 8 side of the cooker body 10 and the lid body 11.

  When the inside of the pan 3 containing the ingredients (for example, brown rice) is heated in a closed state, a large force acts to push the lid 11 upward with the generated steam. This large force is supported on the engaged portion 47 side of the pressure rice cooker 1 by a lock member composed of the engagement claw portion 23 and the engagement opening 47, and a large force acts on the lock member. . A large force also acts on the rice cooker body 10 and the lid body 11. For this reason, a metal lid reinforcing plate 40 and a trunk reinforcing plate 50 that function as reinforcing members are usually disposed on the rice cooker body 10 and the lid 11 that are molded of a synthetic resin material. In the pressure rice cooker 1 of the present invention, a new reinforcing member and a reinforcing element for reinforcing a conventionally used reinforcing member are disposed as the reinforcing portion.

  First, the reinforcement part arrange | positioned at the cover body 11 is demonstrated, referring FIG.

  A reinforcing member for reinforcing the lid 11 has been conventionally used. The lid reinforcing plate 40 according to this embodiment constitutes a part of the lid 11 and has a plate-like lid reinforcing body 41 as shown in FIG. It has the side reinforcement part 41a and the front reinforcement part 41c and the back reinforcement part 41d which are connected with a pair of right and left side reinforcement parts 41a. In a space surrounded by the pair of left and right side reinforcing portions 41a, the front reinforcing portion 41c, and the rear reinforcing portion 41d, components necessary for the lid 11, such as a pressure adjusting device, a drive mechanism, and a steam unit are arranged. The

  The pair of left and right side reinforcing portions 41a extend in the front-rear direction from the engaging portion 23 side to the hinge pin 8 side, but the outer surface of the rear side portion 41j on the hinge pin 8 side is the outer surface of the front side portion 41h on the engaging portion 23 side. Further, the inner surface of the rear side portion 41j on the hinge pin 8 side has an irregular shape that is located on the outer side of the inner surface of the front side portion 41h on the engagement portion 23 side. That is, in the pair of left and right side reinforcing parts 41a, the engaging part 23 side is closer to the inner side, the hinge pin 8 side is closer to the outer side, and the middle part connecting the two has an irregular shape. Whereas the conventional side reinforcing portion extends linearly in the front-rear direction, the side reinforcing portion 41a in this embodiment extends irregularly in the front-rear direction. A pair of left and right side reinforcing bodies 42 made of metal having a shape similar to that of the pair of left and right side reinforcing portions 41a in plan view are mounted on the pair of left and right side reinforcing portions 41a. Also in the pair of left and right side reinforcing bodies 42, the outer surface of the rear side portion 42j on the hinge pin 8 side is located outward from the outer surface of the front side portion 42h on the engaging portion 23 side, and the rear side portion 42j on the hinge pin 8 side is located. The inner surface is located outward from the inner surface of the front side portion 42h on the engagement portion 23 side. The pair of left and right side reinforcing portions 41a and the side reinforcing body 42 are integrated by screwing.

  According to the said structure, since the space | interval of the rear side parts 41j and 42j by the side of the hinge pin 8 of a pair of right and left side reinforcement parts 41a and the side reinforcement body 42 expands, the drive unit for closing the cover body 11 automatically A large installation space for installing 7 can be secured. Moreover, since the space | interval of the front side part 41h and 42h by the side of the engaging part 23 of a pair of right and left side reinforcement part 41a and the side reinforcement body 42 is narrow, the strength fall around the to-be-engaged part 47 can be suppressed.

  In the pair of left and right side reinforcing portions 41a and the side reinforcing bodies 42, intermediate portions 41i and 42i positioned between the front side portions 41h and 42h and the rear side portions 41j and 42j are formed as front side portions 41h and 42h and a rear side portion. It is configured wider than 41j and 42j. According to the said structure, in the left-right paired side reinforcement part 41a, the intermediate parts 41i and 42i which are easy to deform | transform can be reinforced. Accordingly, the pair of left and right side reinforcing portions 41 a and the side reinforcing bodies 42 made of metal serve as reinforcing elements for reinforcing the lid reinforcing plate 40.

  As shown in FIG. 3, the lid reinforcing body 41 has a large opening. In the large opening of the lid reinforcing body 41, a steam unit 27 communicating with the steam discharge port 17, a boss projecting upward from the inner surface (upper surface) of the inner member 26, and the like are disposed. The large opening increases the degree of freedom in installing the steam unit 27 and the like. However, the large opening of the lid reinforcing body 41 acts in a disadvantageous direction in terms of strength. The front-rear direction from the engaging part 23 side to the hinge pin 8 side is reinforced by a pair of left and right side reinforcing parts 41a and side reinforcing bodies 42, but the plate-like front reinforcing part 41c and rear reinforcing part 41d are strong. Is insufficient. Therefore, the orthogonal direction (left-right direction) orthogonal to the pair of left and right side reinforcing portions 41 a and the side reinforcing bodies 42 is reinforced.

  The front reinforcing portion 41c is provided with a metal reinforcing pin extending linearly in an orthogonal direction orthogonal to the pair of left and right side reinforcing portions 41a. On the rear reinforcing portion 41d side, a non-linear metal reinforcing bar orthogonal to the pair of left and right side reinforcing portions 41a is disposed on the lid reinforcing plate 40. The non-linear reinforcing bar has a crank shape so as to avoid interference with the three-dimensional steam unit 27. The leg portion of the crank-shaped reinforcing bar is fixed to the bar mounting portion 49 of the lid reinforcing plate 40 with a screw. The orthogonal direction of the pair of left and right side reinforcing portions 41 a and the side reinforcing bodies 42 is reinforced in the lid reinforcing plate 40 by the reinforcing pins and the reinforcing bars. Therefore, the metal reinforcing pins and the reinforcing bars serve as reinforcing elements for reinforcing the lid reinforcing plate 40.

  In addition, a hinge receiving portion 43 is formed at each end of the pair of left and right side reinforcing portions 41a on the hinge pin 8 side, and a lid side engagement hole 44 is formed in each hinge receiving portion 43. The left and right lid side shaft portions 8b (shown in FIGS. 9 and 10) of the hinge pins 8 are fitted into the lid side engaging holes 44, respectively. On the inner surface of the rear side portion 41j on the hinge pin 8 side of the pair of left and right side reinforcing portions 41a, a rotation locking portion 48 is formed. Each of the rotated locking portions 48 extends in a plate shape in an orthogonal direction (left-right direction) orthogonal to the pair of left and right side reinforcing portions 41 a. Each pivotal locking portion 48 functions as a pivotal locking portion formed on the metal lid reinforcing plate 40. Each pivotal locking portion 48 is latched by a pivotal locking portion 74 of a hinge reinforcing body 70 described later when the lid body 11 is rotated to open, and the lid body 11 is rotated. Be regulated.

  Below, the reinforcement part arrange | positioned at the rice cooker main body 10 is demonstrated, referring FIGS. 4-6.

  A metal trunk reinforcing plate 50 shown in FIG. 4 is disposed below the shoulder member 32 made of synthetic resin shown in FIG. As shown in FIG. 3, the shoulder member 32 includes a plate-like shoulder body having a substantially ring shape, a cover portion formed at the front portion of the shoulder body, and a hinge connection portion 21 formed at the rear portion of the shoulder body. And have. The trunk reinforcing plate 50 serves as a reinforcing member that constitutes a part of the cooker body 10 and reinforces the rice cooker body 10, and as shown in FIG. Left and right side portions 52 extending downward from left and right side ends of the trunk reinforcing body 51. The trunk reinforcing plate 50 includes a front mounting portion 53 that extends upward from the front end of the trunk reinforcing main body 51, and a rear mounting portion 56 that extends upward from the rear end of the trunk reinforcing main body 51. The front attachment portion 53 and the rear attachment portion 56 have screw holes. A plurality of front locking holes 54 are formed in the front mounting portion 53.

  A metal hook receiving reinforcement 60, which is a separate body from the trunk reinforcement plate 50, is disposed in front of the trunk reinforcement plate 50, that is, on the engagement opening 47 side in FIG. 3. The hook receiving reinforcement 60 is bent into a crank shape and includes an upper plate portion 61, leg portions 62, left and right lower plate portions 63, and a front contact portion 64. Each of the leg portion 62 and the front contact portion 64 has a plurality of front locking projections 65 protruding forward. Each of the front locking projections 65 is inserted into a corresponding front locked hole (front locked portion) 54 in the front mounting portion 53, so that the hook receiving reinforcement 60 is attached to the front mounting portion of the trunk reinforcing plate 50. 53 is stably locked. In addition, the left and right lower plate portions 63 and upper plate portions 61 of the hook receiving reinforcement 60 are fixed to the front portion of the trunk reinforcing body 51 with screws. Further, the front abutting portion 64 of the hook receiving reinforcement 60 is fixed to the front mounting portion 53 of the trunk reinforcing plate 50 with a screw. Therefore, the hook receiving reinforcing body 60 is easily and reliably fixed to the trunk reinforcing plate 50.

  When a large force that pushes the engagement opening 47 side of the lid 11 upward is generated by steam generated during cooking, the large engagement force is resisted by the locking of the front locking protrusion 65 to the front locked hole 54. can do. In addition to the fixing structure with screws, the hook receiving reinforcement body 60 is attached to the trunk reinforcing plate 50 by the locking structure of the front locking protrusion 65 to the front locked hole 54.

  The hook receiving reinforcement 60 integrated with the shoulder member 32 constitutes a part of the engagement opening 47, and the upper plate portion 61 of the hook receiving reinforcement 60 is an engagement claw of the lid 11 in the engagement locked state. Engage with part 23. The engagement opening 47, that is, the engaged portion 47 side of the shoulder member 32 is reinforced by the hook receiving reinforcement 60. Therefore, the hook receiving reinforcement 60 functions as a reinforcing member for reinforcing the engagement opening 47 side of the cooker body 10. Further, the front locking hole 54 of the hook receiving reinforcement 60 functions as a reinforcing element for reinforcing the hook receiving reinforcement 60.

  As described above, the upper plate portion 61 of the hook receiving reinforcement 60 is fixed to the front portion of the trunk reinforcing body 51 with screws, but the upper plate portion 61 is positioned above the lower plate portion 63. A long connection screw for connecting the upper plate portion 61 and the front portion of the trunk reinforcing body 51 is used. The connection screw may be visually recognized in a side view and impairs the beauty around the engagement opening 47. Further, a through hole for screwing is formed in the front portion of the trunk reinforcing body 51, and there is a possibility that liquid may enter the inside of the cooker body 10 through the through hole. Therefore, the engaging opening 47 is provided with a blindfold that hides the connection screw. The blindfolded portion is a raised step portion having an insertion hole for inserting a connection screw, and is configured as a part of the shoulder member 32. The blindfold can be configured as a separate member from the shoulder member 32.

  Further, the body reinforcing plate 50 and the hook receiving reinforcement 60 are assembled to the shoulder member 32 by attaching the body reinforcing plate 50 to the shoulder body of the shoulder member 32 and inserting the hook receiving reinforcing body 60 into the covering portion of the shoulder member 32. The hook receiving reinforcement 60 is locked to the trunk reinforcing plate 50 and fixed with screws.

  A metal hinge reinforcement body (hinge reinforcement portion) 70, which is a separate body from the trunk reinforcement plate 50, is disposed behind the trunk reinforcement plate 50, that is, on the hinge pin 8 side. The hinge reinforcing body 70 functions as a reinforcing member for reinforcing the hinge pin 8 side of the cooker body 10. As shown in FIG. 5, the hinge reinforcing body 70 is bent into a crank shape and includes a main body portion 71, left and right shaft support portions 72, and left and right attachment portions 75. The main body 71 is U-shaped in plan view. The drive unit 7 is accommodated in a space surrounded by the main body 71 and the rear mounting portion 56. On both sides of the main body 71, plate-like attachment portions 75 extending in the left-right direction are formed. A plate-like shaft support portion 72 extending in the front-rear direction and the up-down direction is formed on the outside of each attachment portion 75.

  A plurality of through holes for screwing are formed in the left and right attachment portions 75, respectively. The left and right attachment portions 75 are screwed in a state where they are in contact with the rear attachment portion 56 of the trunk reinforcing plate 50. Rear locking projections 76 that protrude forward are formed at the lower ends of the left and right attachment portions 75, respectively. When the left and right attachment portions 75 are screwed to the rear attachment portion 56, each rear engagement protrusion 76 is configured to be engaged with the lower surface 51a (shown in FIG. 6) of the rear portion of the trunk reinforcing body 51. . According to this configuration, the upper and lower surfaces 51a of the rear locking projections 76 can be brought into contact with each other to be securely locked, and the processing of the rear locked portion in the trunk reinforcing plate 50 becomes unnecessary, thereby reducing the cost. Can be achieved.

  When a large force that pushes the hinge pin 8 side of the lid body 11 upward is generated by steam generated during cooking, the large force is resisted by the locking of the rear locking protrusion 76 to the lower surface 51a of the trunk reinforcing body 51. be able to. The lower surface 51a of the rear part of the trunk reinforcing body 51 serves as a rear locked part. In addition to the fixing structure using screws, the attachment of the hinge reinforcing body 70 to the trunk reinforcing plate 50 is reinforced by the locking structure of the rear locking projection 76 on the lower surface 51a of the trunk reinforcing body 51. Therefore, since the hinge pin 8 side of the shoulder member 32 is reinforced by the hinge reinforcing body 70, the rear locking projection 76 of the hinge reinforcing body 70 serves as a reinforcing element for reinforcing the hinge pin 8 side of the cooker body 10. .

  The rotation locking structure around the hinge pin 8 will be described with reference to FIG. FIG. 8 is a perspective view of the rotation locking structure around the hinge pin 8 as seen from the rear.

  On the upper portions of the left and right shaft support portions 72, rotation locking portions 74 are formed, respectively. The left and right shaft support portions 72 each have a bearing hole 73, and a rotation locking portion 74 is formed above each bearing hole 73. Each bearing hole 73 pivotally supports the main body side shaft portion 8c of the hinge pin 8 so as to be rotatable. According to this configuration, the distance between the location of the lid reinforcing plate 40 that contacts the rotation locking portion 74 (that is, the rotation locking portion 48) and the hinge pin 8 that is the rotation shaft can be secured. 11 can be opened smoothly.

  The rotation locking portion 74 of the hinge reinforcing body 70 locks the rotation locking portion 48 of the lid reinforcing plate 40 when the lid body 11 is rotated to open, and the rotation of the lid body 11 is performed. The movement is restricted to about 90 degrees. In this manner, each rotation locking portion 74 functions as a stopper portion that is attached to the metal trunk reinforcing plate 50 and formed on the metal hinge reinforcing body 70 that pivotally supports the hinge pin 8.

  A synthetic resin shoulder cover 29 is disposed above the hinge connection portion 21 of the shoulder member 32, and the shoulder cover 29 is screwed to the hinge connection portion 21. The shoulder cover 29 has an inclined portion 29a and left and right engagement receiving portions 29b. The inclined portion 29 a is formed at the center of the shoulder cover 29 and is inclined obliquely downward toward the pan 3. The inclined portion 29a of the shoulder cover 29 prevents the liquid adhering to the inner surface of the lid body 11 from dropping when the lid body 11 is opened, leading to the pan 3 side and entering the hinge connection structure. In addition, the hinge connection structure can be blinded.

  The left and right latch receiving portions 29b are formed at the left and right ends of the shoulder cover 29 and extend upward. By forming the left and right latch receiving portions 29b on the shoulder cover 29, which is a separate member from the hinge connecting portion 21 of the shoulder member 32, strength reduction is prevented in the hinge connecting portion 21 of the shoulder member 32 made of synthetic resin. There is no loss of moldability.

  A locking surface for locking the pivoted locking portion 48 of the lid reinforcing plate 40 is formed at the front portion of the left and right locking receiving portions 29b. In the rear part of the left and right latch receiving portions 29b, a recess for mounting the rotation latching portion 74 of the hinge reinforcing body 70 is formed. The rotation latching part 74 is attached to the recess of the latching receiving part 29b of the synthetic resin shoulder cover 29. In other words, a synthetic resin (non-metallic) latch receiving portion 29 b is disposed on the front surface of the metal rotation latch portion 74. According to the said structure, it prevents that the metal rotation latching | locking part 48 collides with the metal rotation latching | locking part 74, and the collision sound of metals generate | occur | produces. Therefore, the rotation locking portion 48 of the lid reinforcing plate 40 is locked to the rotation locking portion 74 of the hinge reinforcing body 70 via the locking receiving portion 29 b of the shoulder cover 29, and the rotation of the lid body 11. The movement is restricted to about 90 degrees.

  As shown in FIG. 8, the hinge pin 8 indicated by a broken line is inserted through the hinge bush 9. A hinge spring (not shown) is attached to the outside of the hinge bush 9, and the lid 11 is urged in the opening direction by the hinge spring.

  The hinge pin 8 extends in the orthogonal direction (left-right direction) orthogonal to the pair of left and right side reinforcing portions 41 a and the side reinforcing bodies 42 described above. For example, as shown in FIG. 9, the hinge pin 8 includes a shaft main body 8a, a lid side shaft portion 8b, a main body side shaft portion 8c, and a drive shaft portion 8d from the end side toward the center side. The lid-side shaft portion 8b has a non-circular track shape in cross-sectional view, and engages with a complementary-side lid-side engagement hole 44 formed in the lid reinforcing plate 40. The main body side shaft portion 8 c has a circular shape in a cross-sectional view, and is supported by a circular bearing hole 73 formed in the hinge reinforcing body 70. The drive shaft portion 8 d has a non-circular track shape in cross-sectional view, and engages with a drive output portion (not shown) configured in the drive unit 7.

  In the lid-side shaft portion 8b and the drive shaft portion 8d, the track shape is that the lid-side shaft portion 8b and the drive shaft portion 8d are composed of left and right cylindrical portions and upper and lower planar portions in a side view. It points to that. In the hinge pin 8 shown in FIG. 9, the planar portions of the lid-side shaft portion 8b and the drive shaft portion 8d extend in parallel.

  The force from the electric motor of the drive unit 7 is transmitted to the hinge pin 8 pivotally supported by the bearing hole 73 through the drive output portion and the drive shaft portion 8d. The force transmitted to the hinge pin 8 is transmitted to the lid reinforcing plate 40 of the lid body 11 through the lid side shaft portion 8b and the lid side engagement hole 44. By the force transmitted to the lid reinforcing plate 40 of the lid 11, the lid 11 is rotated in the closing direction, and the lid 11 is closed. As described above, the non-circular portion of the hinge pin 8 is used as an input portion that receives a force acting on the hinge pin 8 or an output portion that outputs force from the hinge pin 8 to the outside.

  FIG. 10 shows a modification of the hinge pin 8. Like the hinge pin 8 shown in FIG. 9, the hinge pin 8 of FIG. 10 extends in the orthogonal direction (left-right direction) perpendicular to the pair of left and right side reinforcing portions 41 a and the side reinforcing bodies 42, and extends from the end side to the center. A shaft main body 8a, a lid side shaft portion 8b, a main body side shaft portion 8c, and a drive shaft portion 8d are provided toward the side. The lid-side shaft portion 8 b has a non-circular track shape in cross-sectional view, and engages with a circular lid-side engagement hole 44 formed in the lid reinforcing plate 40. The main body side shaft portion 8 c has a circular shape in a cross-sectional view, and is supported by a circular bearing hole 73 formed in the hinge reinforcing body 70. The drive shaft portion 8 d has a non-circular track shape in cross-sectional view, and engages with a drive output portion (not shown) configured in the drive unit 7. In the hinge pin 8 shown in FIG. 10, the planar portions of the lid-side shaft portion 8b and the drive shaft portion 8d extend so as to be orthogonal to each other.

  As described above, in the pressure rice cooker 1, when the lid body 11 is rotated in the opening direction, the pivoted locking portion 48 formed on the metal lid reinforcing plate 40 has the metal hinge. Since it is locked by the rotation locking portion 74 formed on the reinforcing body 70 and has a metal-to-metal rotation locking structure, sufficient rotation locking strength can be ensured. Therefore, the heating cooker 1 has sufficient rotation locking strength to lock the lid body 11 rotated in the opening direction with the cooking device main body 10.

  In order to facilitate understanding of the present invention, the description has been made using specific configurations and numbers, but the present invention is not limited to the specific configurations and numbers of the above-described embodiments, Various modifications that can be considered without departing from the scope of the claims can be included.

  In the above-described embodiment, the hinge reinforcing portion 70 is configured as a metal hinge reinforcing body 70 that is separate from the trunk reinforcing plate 50. The hinge reinforcing part 70 is integrated with the metal cylinder reinforcing plate 50 by, for example, forming a predetermined hinge reinforcing shape by extending a part of the cylinder reinforcing body 51 or the rear mounting part 56 of the cylinder reinforcing plate 50 backward. It can also be set as the structure formed automatically.

  The latch receiving part 29b may be configured such that the shoulder cover 29 is integrated with the shoulder member 32 and formed on the left and right of the upper part of the hinge connecting part 21 of the integrated shoulder member 32. The latch receiving portion 29b is attached to the pivotal latching portion 74 of the hinge reinforcement 70 or the pivotal latching portion 48 of the lid reinforcing plate 40 as a cap-like separate member made of an elastic body such as an elastomer. Also, a configuration may be adopted in which the rotation locking portion 74 and the rotation locking portion 48 are disposed.

  The non-circular portion formed on the hinge pin 8 only needs to be in a shape that engages with a corresponding engagement hole or the like to transmit force, and in a cross-sectional view, a circular shape in which a key groove is formed, a regular hexagonal shape, Various shapes such as an elliptical shape and a regular polygonal shape can be used. The corresponding engagement holes and the like have a shape complementary to the non-circular portion formed in the hinge pin 8.

  The drive unit 7 can be disposed on the lid 11 side. Further, the hinge pin 8 has a shaft main body 8a, a main body side shaft portion 8c, a lid side shaft portion 8b, and a drive shaft portion 8d from the end side toward the center side, and the main body side shaft portion 8c and the drive shaft. The portion 8d may be configured from a non-circular portion in cross-sectional view, and the lid-side shaft portion 8b may be configured from a circular portion in cross-sectional view.

  In the gap between the upper end outer peripheral portion of the cooker body 10 and the lower end outer peripheral portion of the lid 11, for example, a polymer elastic body such as a rubber material such as silicone rubber, fluorine rubber, urethane rubber, or an elastomer material. A mode in which a flexible gap buffer constituted by: Since the gap buffer is bent flexibly and elastically, unintended interference of fingers with the cooker body 10 and the lid 11 can be prevented. Further, the gap buffer may be a detachable or non-removable fixed type. The present invention can be applied to a case where the lid body 11 is automatically closed by an electric motor or a case where the lid body 11 is manually closed.

  The present invention has been described by taking as an example the pressure-type rice cooker 1 that cooks brown rice or the like that is difficult to pass through as a heating cooker, but other cooking under high pressure (for example, shin meat, spare ribs, curry, stew) It can also be applied to pressure cookers that cook stewed dishes, cooked beans, grains and root vegetables. Moreover, this invention is applied also to the pressure-type or non-pressure-type rice cooker which cooks rice, and the heating cooker which heats and cooks other cooking products (for example, cake dough, bread, yogurt, steamed material). Is possible.

1 Pressure rice cooker (heating cooker)
3 Pan 4 Upper end opening 7 Drive unit 8 Hinge pin 8a Shaft body 8b Lid side shaft 8c Body side shaft 8d Drive shaft 9 Hinge bush 10 Rice cooker body (cooker body)
DESCRIPTION OF SYMBOLS 11 Cover body 12 Body 13 Closing operation member 14 Upper panel 15 Display part 16 Opening operation member 17 Steam discharge port 18 Heat sink 19 Operation part 21 Hinge connection part 22 Bottom body 23 Engagement claw part (engagement part)
25 Outer member 26 Inner member 28 Hinge cover 29 Shoulder cover 29a Inclined portion 29b Locking receiving portion 32 Shoulder member 34 Decorative cover 36 Body decoration body 40 Lid reinforcement plate 41 Lid reinforcement body 41a Side reinforcement part 41c Front reinforcement part 41d Rear reinforcement Portion 41h front side portion 41i intermediate portion 41j rear side portion 42 side reinforcement 42h front side portion 42i intermediate portion 42j rear side portion 43 hinge receiving portion 44 lid side engagement hole 45 shoulder engagement portion 46 guide portion 47 engagement opening ( Engaged part)
48 Rotating locking portion 49 Bar mounting portion 50 Cylinder reinforcing plate 51 Cylinder reinforcing main body 51a Lower surface (rear locked portion)
52 Side portion 53 Front mounting portion 54 Front locked hole (front locked portion)
56 Rear mounting portion 60 Hook receiving reinforcement 61 Upper plate portion 62 Leg portion 63 Lower plate portion 64 Front contact portion 65 Front locking projection 70 Hinge reinforcement body (hinge reinforcement portion)
71 Body portion 72 Shaft support portion 73 Bearing hole 74 Rotation locking portion 75 Mounting portion 76 Rear locking protrusion

Claims (5)

A cooker body containing a pan,
A lid configured to be pivotable to the cooker body around a hinge pin;
A metal trunk reinforcing plate constituting a part of the cooker body,
The metal hinge reinforcing portion that is disposed on the trunk reinforcing plate and pivotally supports the hinge pin is formed with a rotation locking portion, and a metal lid reinforcing plate that constitutes a part of the lid body Is formed with a pivoted locking portion,
A heating cooker in which the rotation locking portion is locked by the rotation locking portion when the lid is rotated in the opening direction.   The cooking device according to claim 1, wherein the rotation locking portion is formed above a bearing hole that pivotally supports the hinge pin in the hinge reinforcing portion.   The cooking device according to claim 1 or 2, wherein a non-metallic engagement receiving portion is disposed between the rotation engagement portion and the rotation engagement portion.   The cooking device according to claim 3, wherein the latch receiving portion is formed on a synthetic resin shoulder cover disposed above the hinge connection portion of the synthetic resin shoulder member.   The cooking device according to claim 4, wherein the shoulder cover has an inclined portion inclined obliquely downward toward the pan.

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