JP6683537B2 - Heating cooker - Google Patents

Description

  The present invention relates to a heating cooker that heats and cooks a food item set in a pan.

  For example, Patent Document 1 discloses a rice cooker including a cooker main body in which a storage section for storing a pan is provided, and a lid body that covers an upper surface of the pan. The lid is configured to be openable and closable with respect to the cooker body.

JP, 2015-39516, A

  In the rice cooker of Patent Document 1, the lid body is urged in the opening direction by the hinge spring provided in the hinge portion that pivotally supports the lid body. When the opening operation of the lid is performed, the lid is rotated in the opening direction by the biasing force of the hinge spring. The rotation-locked portion on the lid side is locked to the rotation-locked portion on the cooker body side, whereby the rotation of the biased lid body is stopped. For example, the rotation locked portion on the lid side is provided on the reinforcing member of the lid, the rotation locked portion on the cooker body side is provided on the shoulder member of the cooker body, and the rotation locked portion on the lid side is locked. The part is locked to the rotation locking part on the cooker body side.

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

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

  In order to solve the above technical problems, according to the present invention, the following heating cooker is provided.

That is, the heating cooker according to the present invention,
A cooker body that houses a pot,
A lid configured to be rotatable around the hinge pin about the cooker body;
A metal body reinforcing plate that constitutes a part of the cooker body,
The metal hinge reinforcing portion, which is disposed on the body reinforcing plate and axially supports the hinge pin, is formed with a rotation locking portion and constitutes a part of the lid body. Is formed with a rotation-locked portion,
When the lid is rotated in the opening direction, the rotation locking portion is locked by the rotation locking portion.

  According to the present invention, when the lid is rotated in the opening direction, the rotation locked portion formed on the metal lid reinforcing plate is the rotation locking portion formed on the metal hinge reinforcing portion. Since it is locked by means of a rotation locking structure of metals, a sufficient rotation locking strength can be secured. Therefore, the heating cooker has a rotation locking strength sufficient to lock the lid body rotated in the opening direction with the cooker body.

  It is preferable that the rotation locking portion is formed above the bearing hole that pivotally supports the hinge pin in the hinge reinforcing portion. With this configuration, a distance can be secured between the position of the lid reinforcing plate that comes into contact with the rotation locking portion and the hinge pin that is the rotation shaft, so that the lid can be opened smoothly.

  It is preferable that a non-metal lock receiving portion is provided between the rotation locking portion and the rotation locked portion. With this configuration, it is possible to prevent the rotation-locking portion made of metal from colliding with the rotation-locking portion made of metal and generating a collision sound between the metals.

  It is preferable that the lock receiving portion is formed on a synthetic resin shoulder cover disposed above the hinge connection portion of the synthetic resin shoulder member. With this configuration, since the shoulder cover is a separate member from the hinge connecting portion of the shoulder member, the hinge connecting portion of the synthetic resin shoulder member prevents strength deterioration and does not impair moldability. .

  It is preferable that the shoulder cover has an inclined portion that is inclined downward toward the pot. By doing this, even if the liquid that had adhered to the inner surface of the lid drips when the lid is opened, it can be guided to the pot side and not enter the hinge connection structure, and the hinge connection structure can be prevented. 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 formed on the metal hinge reinforcing portion. Since it is locked by the dynamic locking portion and has a rotation locking structure of metals, a sufficient rotation locking strength can be secured. Therefore, the heating cooker has a rotation locking strength sufficient to lock the lid body 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. The perspective view which shows the closed state of a lid. The perspective view which shows the principal part of a cover body, and a cooking device main body. The perspective view which shows the trunk | drum reinforcement plate arrange | positioned in the cooker main body. FIG. 5 is a development view of the body reinforcing plate shown in FIG. 4. The perspective view which looked at the trunk reinforcing plate shown in Drawing 4 from the back lower part. The perspective view which expanded the principal part of FIG. The perspective view which looked at the rotation locking structure around a hinge pin from the 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 type rice cooker (heating cooker) 1 according to one embodiment and showing an open state of a lid 11. FIG. 2 is a perspective view showing a closed state of the lid 11.

  The pressure type rice cooker 1 shown in FIGS. 1 and 2 includes a rice cooker main body (cooker main body) 10 that detachably accommodates a cooking pot 3 heated by induction heating, and the rice cooker main body 10 includes And a lid body 11 that is rotatably arranged.

  The rice cooker body 10 includes an exterior body having a tubular body 12, a bottom body 22 that closes the lower end opening of the body 12, and a shoulder member 32 that is attached so as to cover the upper end opening of the body 12. There is. The upper portion of the shoulder member 32 is partially covered with the decorative cover 34. The upper part of the outer periphery of the shoulder member 32 is covered with the body ornament 36. A heater (for example, an induction heating coil) that heats the lower portion of the pot 3 and a pot temperature sensor that detects the temperature of the pot 3 are provided below the shoulder member 32. A hinge connecting portion 21 for rotatably connecting the lid 11 is provided on the rear side of the shoulder member 32.

  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 that extends obliquely upward toward the rear side where the hinge pin 8 is provided, and guides the engaging claw portion (engaging portion) 23 that constitutes one of the lock members to the engaging opening 47. The engagement opening 47 that constitutes the other of the lock members 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 main body 10, and the engagement claw portion 23 is formed in the lid 11. A control board (not shown) is arranged in the rice cooker body 10. A handle (not shown) is attached to the side surface of the body 12.

  The lid body 11 is rotatably attached around 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 body 11 includes an outer body having an inner member 26 located on the pan 3 side in the closed state and an outer member 25 covering the upper outer side of the inner member 26. The inner member 26 is provided with a heat dissipation plate 18, a lid heater (not shown), and an inner lid (not shown) detachably attached. When the lid body 11 is closed with respect to the rice cooker body 10, the inner lid of the lid body 11 closes the upper end opening 4 of the pan 3. The configuration is not limited to the configuration in which the inner lid is attachable to and detachable from the lid body 11, and may be a configuration in which the inner lid cannot be removed from the lid body 11.

  As shown in FIG. 2, the lid 11 has a steam outlet 17 which is an outlet of an exhaust passage on the rear side of the outer member 25. Inside the lid body 11, a lid body temperature sensor (not shown) that detects the temperature inside the pan 3 is provided. Further, on the front side of the upper panel 14, an operation unit 19 including 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. A microcomputer (control unit) mounted on this control board controls heating (energization) by a heater based on temperature measurement by a temperature sensor. Further, the operation unit 19 and the display unit 15 are connected to a microcomputer, and the microcomputer controls input / output of data.

  The inner member 26 of the lid 11 is rotatably attached to the hinge connecting portion 21 formed on the rear side of the rice cooker body 10. The lid 11 is biased in the opening direction by a hinge spring (not shown) inserted through the hinge pin 8. The lid 11 is slowly opened by a damper incorporated in the drive unit 7. A heat radiating plate 18 is arranged at a position where the inner member 26 faces the pan 3 in the closed state. A lid heater (not shown) that heats the inside of the pan 3 is disposed on the upper surface of the heat dissipation 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 11 is provided on the front side of the outer member 25 of the lid 11. The opening operation member 16 is provided with a pressing portion on its inner surface side for rotating the engagement claw portion 23 in the engagement locked state with respect to the engagement opening 47 in the releasing direction. The opening operation member 16 is biased upward by a kick spring (not shown). On the front side of the outer member 25, a closing operation member 13 that serves as a switch for automatically closing the lid 11 is provided. The 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 pushed, the lid 11 is rotationally driven in the closing direction by the electric motor built in the drive unit 7, and the lid 11 is automatically closed. With this configuration, the closing operation of the lid 11 can be automatically and smoothly performed.

  Next, the metal reinforcing portion provided in the pressure type rice cooker 1 in order to withstand a large force caused by steam generated during cooking will be described. The reinforcing portion is provided on the engaged portion 47 side and the hinge pin 8 side of the cooker body 10 and the lid body 11, respectively.

  When the pot 3 containing food (eg brown rice) is heated in a closed state, a large force acts to push the lid 11 upward by the generated steam. On the engaged portion 47 side of the pressure type rice cooker 1, this large force is supported 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 11. Therefore, a lid reinforcing plate 40 and a body reinforcing plate 50 made of metal, which function as a reinforcing member, are provided on the rice cooker main body 10 and the lid body 11, which are usually molded with a synthetic resin material. In the pressure type rice cooker 1 of the present invention, a new reinforcing member and a reinforcing element for reinforcing the conventionally used reinforcing member are provided as the reinforcing portion.

  First, with reference to FIG. 3, the reinforcing portion arranged on the lid 11 will be described.

  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 body 11 and has a plate-shaped lid reinforcing main body 41 as shown in FIG. It has a lateral reinforcing portion 41a, and a front reinforcing portion 41c and a rear reinforcing portion 41d connected to the pair of left and right lateral reinforcing portions 41a. In the 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 body 11, such as a pressure regulator, a drive mechanism, and a steam unit, are arranged. It

  The pair of left and right side reinforcing portions 41a extends 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. The rear side portion 41j located on the outer side of the hinge pin 8 has an irregular shape in which the inner surface of the rear side portion 41j is positioned outward 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 portions 41a, the engaging portion 23 side is closer to the inner side, the hinge pin 8 side is closer to the outer side, and the intermediate portion connecting them has a wide shape. Whereas the conventional lateral reinforcing portion extends linearly in the front-rear direction, the lateral reinforcing portion 41a in the present embodiment extends in an irregular shape in the front-rear direction. Then, a pair of left and right side reinforcing bodies 42 made of metal and having a similar shape to the pair of left and right side reinforcing portions 41a in a plan view is mounted on the pair of left and right side reinforcing portions 41a. Also in the pair of left and right side reinforcements 42, the outer surface of the rear side portion 42j on the hinge pin 8 side is located outside the outer surface of the front side portion 42h on the engagement portion 23 side, and the rear side portion 42j of the hinge pin 8 side is positioned. The inner surface is located outside the inner surface of the front side portion 42h on the engaging 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 this configuration, the distance between the rear side portions 41j, 42j of the pair of left and right side reinforcing portions 41a and the side reinforcing body 42 on the hinge pin 8 side is enlarged, so that the drive unit for automatically closing the lid body 11 is formed. A large installation space for installing 7 can be secured. Further, since the interval between the front side portions 41h, 42h of the pair of left and right side reinforcement portions 41a and the side reinforcement body 42 on the engagement portion 23 side is narrow, it is possible to suppress a decrease in strength around the engaged portion 47.

  In the pair of left and right side reinforcements 41a and side reinforcements 42, the intermediate portions 41i, 42i located between the front side portions 41h, 42h and the rear side portions 41j, 42j are the front side portions 41h, 42h and the rear side portions. It is configured wider than 41j and 42j. According to this configuration, the pair of left and right lateral reinforcing portions 41a can reinforce the easily deformable intermediate portions 41i and 42i. Therefore, the pair of left and right metal side reinforcements 41 a and side reinforcements 42 function as reinforcement elements for reinforcing the lid reinforcement plate 40.

  As shown in FIG. 3, the lid reinforcing main body 41 has a large opening. A steam unit 27 communicating with the steam outlet 17 and a boss protruding upward from the inner surface (upper surface) of the inner member 26 are arranged in a large opening of the lid reinforcing main body 41. 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 main body 41 acts in a direction that is disadvantageous in terms of strength. The front-rear direction from the engaging portion 23 side to the hinge pin 8 side is reinforced by a pair of left and right side reinforcing portions 41a and side reinforcing bodies 42, but the plate-like front reinforcing portion 41c and rear reinforcing portion 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 body 42 is reinforced.

  The front reinforcing portion 41c is provided with a metal reinforcing pin extending linearly in a direction orthogonal to the pair of left and right side reinforcing portions 41a. On the side of the rear reinforcing portion 41d, a non-linear metal reinforcing bar orthogonal to the pair of left and right lateral reinforcing portions 41a is arranged on the lid reinforcing plate 40. The non-linear reinforcing bar has a crank shape so as to avoid interference with the steam unit 27 having a three-dimensional shape. 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 above-mentioned reinforcing pin and reinforcing bar reinforce the lid reinforcing plate 40 in a direction orthogonal to the pair of left and right side reinforcing portions 41 a and the side reinforcing body 42. Therefore, the reinforcing pin and the reinforcing bar made of metal act as a reinforcing element for reinforcing the lid reinforcing plate 40.

  Further, 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 engaging 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 pin 8 are fitted into the respective lid side engagement 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, the pivoted locking portions 48 are formed, respectively. Each of the rotated locking portions 48 extends in a plate shape in an orthogonal direction (horizontal direction) orthogonal to the pair of left and right side reinforcing portions 41a. Each rotation locked portion 48 functions as a rotation locked portion formed on the metal lid reinforcing plate 40. When the lid 11 is rotated to be in an open state, each of the rotation locking portions 48 is locked by a rotation locking portion 74 of a hinge reinforcing body 70, which will be described later, so that the rotation of the lid 11 is prevented. Regulated.

  Next, the reinforcing portion arranged in the rice cooker body 10 will be described with reference to FIGS. 4 to 6.

  Below the shoulder member 32 made of synthetic resin shown in FIG. 3, a metal body reinforcing plate 50 shown in FIG. 4 is arranged. As shown in FIG. 3, the shoulder member 32 includes a plate-like substantially ring-shaped shoulder body, a cover portion formed at a front portion of the shoulder body, and a hinge connection portion 21 formed at a rear portion of the shoulder body. Have and. The body reinforcing plate 50 functions 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. 5, a plate-like body-reinforcing body 51 having a substantially ring shape, The left and right side portions 52 extend downward from the left and right side ends of the body reinforcing body 51. The trunk reinforcing plate 50 has a front mounting portion 53 extending upward from the front end of the trunk reinforcing main body 51 and a rear mounting portion 56 extending upward from the rear end of the trunk reinforcing main body 51. The front mounting portion 53 and the rear mounting portion 56 have screw holes. A plurality of front locked holes 54 are formed in the front attachment portion 53.

  In front of the body reinforcing plate 50, that is, on the side of the engagement opening 47 in FIG. 3, a metal hook receiving reinforcement 60, which is a separate body from the body reinforcing plate 50, is disposed. The hook receiving reinforcing body 60 is bent into a crank shape and has an upper plate portion 61, leg portions 62, left and right lower plate portions 63, and a front contact portion 64. The leg portion 62 and the front contact portion 64 each include a plurality of front locking protrusions 65 protruding forward. By inserting each front locking protrusion 65 into the corresponding front locked hole (front locked portion) 54 in the front mounting portion 53, the hook receiving reinforcement 60 is attached to the front mounting portion of the body reinforcing plate 50. 53 is stably locked. Further, the left and right lower plate portions 63 and the upper plate portion 61 of the hook receiving reinforcing body 60 are respectively fixed to the front portion of the body reinforcing main body 51 with screws. Further, the front contact portion 64 of the hook receiving reinforcing body 60 is fixed to the front mounting portion 53 of the case reinforcing plate 50 with a screw. Therefore, the hook receiving reinforcing body 60 is easily and surely fixed to the body reinforcing plate 50.

  When a large force that pushes up the engagement opening 47 side of the lid body 11 is exerted by steam generated during heating and cooking, the front locking projection 65 is locked in the front locked hole 54 to resist the large force. can do. In addition to the fixing structure using screws, the hook receiving reinforcement body 60 is attached to the body reinforcing plate 50 by the locking structure of the front locking projection 65 in 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 in the engagement locked state is the engagement claw of the lid 11. Engage with section 23. The engagement opening 47, that is, the engaged portion 47 side of the shoulder member 32 is reinforced by the hook receiving reinforcing body 60. Therefore, the hook receiving reinforcing body 60 functions as a reinforcing member for reinforcing the engaging opening 47 side of the cooker body 10. Further, the front locked 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 reinforcing body 60 is fixed to the front portion of the trunk reinforcing main body 51 with screws, but the upper plate portion 61 is located above the lower plate portion 63. A long connecting screw is used for connecting the upper plate portion 61 and the front portion of the body reinforcing body 51. The connection screw may be visually recognized in a side view and impairs the aesthetic sense around the engagement opening 47. Further, a through hole for screwing is formed in the front part of the body reinforcing main body 51, and liquid may enter the inside of the cooker main body 10 through the through hole. Therefore, the engagement opening 47 is provided with a blind portion that hides the connection screw. The blindfold 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 portion may be configured as a member separate from the shoulder member 32.

  To assemble the body reinforcing plate 50 and the hook receiving reinforcing body 60 to the shoulder member 32, the body reinforcing plate 50 is attached to the shoulder body of the shoulder member 32, and the hook receiving reinforcing body 60 is inserted into the covering portion of the shoulder member 32. The hook receiving reinforcement 60 is locked to the body reinforcing plate 50 and fixed with screws.

  A metal hinge reinforcement body (hinge reinforcement portion) 70, which is a separate body from the body reinforcement plate 50, is disposed behind the body 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 has a main body portion 71, left and right shaft supporting portions 72, and left and right mounting portions 75. The main body 71 has a U-shape when seen in a plan view. The drive unit 7 is housed in the space surrounded by the main body portion 71 and the rear mounting portion 56. Plate-shaped attachment portions 75 extending in the left-right direction are formed on both sides of the main body portion 71, respectively. Plate-shaped shaft support portions 72 that extend in the front-rear direction and the vertical direction are formed on the outer sides of the mounting portions 75, respectively.

  Plural through holes for screwing are formed in the left and right mounting portions 75, respectively. The left and right mounting portions 75 are screwed in contact with the rear mounting portion 56 of the body reinforcing plate 50. Rear locking protrusions 76 protruding forward are formed at the lower ends of the left and right mounting portions 75, respectively. When the left and right mounting portions 75 are screwed to the rear mounting portion 56, the rear locking protrusions 76 are configured to lock with the lower surface 51a (illustrated in FIG. 6) of the rear portion of the trunk reinforcing body 51. . According to this configuration, the upper surface and the lower surface 51a of the rear locking protrusion 76 can be brought into contact with each other to reliably lock the rear locking projection 76, and the rear locked portion of the body reinforcing plate 50 does not need to be processed, resulting in cost reduction. Can be achieved.

  When a large force that pushes up the hinge pin 8 side of the lid 11 upward is applied by steam generated during heating and cooking, the rear locking protrusion 76 is locked to the lower surface 51a of the body reinforcing body 51 to resist the large force. be able to. The rear lower surface 51a of the body reinforcing body 51 functions as a rear locked portion. In addition to the fixing structure using screws, the attachment structure of the hinge reinforcement body 70 to the body reinforcement plate 50 is reinforced by the engagement structure of the rear engagement protrusions 76 on the lower surface 51a of the body reinforcement 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 protrusion 76 of the hinge reinforcing body 70 acts 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 viewed from the rear.

  Rotational locking portions 74 are formed on the left and right shaft support portions 72, 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. According to this configuration, a distance can be secured between the position of the lid reinforcing plate 40 that comes into contact with the rotation locking portion 74 (that is, the rotation locking portion 48) and the hinge pin 8 that is the rotation shaft. 11 can be opened smoothly.

  When the lid 11 is pivoted to the open state, the pivot locking portion 74 of the hinge reinforcing body 70 locks the pivot locking portion 48 of the lid reinforcing plate 40 to rotate the lid 11. The movement is regulated to about 90 degrees. As described above, each of the rotation locking portions 74 is attached to the metal body reinforcing plate 50 and functions as a stopper portion formed on the metal hinge reinforcing body 70 that pivotally supports the hinge pin 8.

  A synthetic resin shoulder cover 29 is provided above the hinge connecting portion 21 of the shoulder member 32, and the shoulder cover 29 is screwed to the hinge connecting portion 21. The shoulder cover 29 has an inclined portion 29a and left and right lock receiving portions 29b. The inclined portion 29a is formed in the central portion of the shoulder cover 29 and is inclined obliquely downward toward the pot 3. Due to the inclined portion 29a of the shoulder cover 29, even if the liquid adhering to the inner surface of the lid 11 drops when the lid 11 is opened, it is guided to the pot 3 side and prevented from entering the hinge connection structure. In addition, the hinge connection structure can be blindfolded.

  The left and right lock receiving portions 29b are formed on the left and right ends of the shoulder cover 29 and extend upward. By forming the left and right lock receiving portions 29b on the shoulder cover 29 which is a member different from the hinge connecting portion 21 of the shoulder member 32, strength reduction is prevented at the hinge connecting portion 21 of the synthetic resin shoulder member 32. Does not impair moldability.

  Locking surfaces for locking the pivoted locking portions 48 of the lid reinforcing plate 40 are formed at the front portions of the left and right locking receiving portions 29b. At the rear of the left and right lock receiving portions 29b, recesses for mounting the rotary lock portions 74 of the hinge reinforcing body 70 are formed. The rotation locking portion 74 is mounted in the recess of the locking receiving portion 29b of the shoulder cover 29 made of synthetic resin. That is, on the front surface of the metal rotation locking portion 74, the synthetic resin (non-metal) locking receiving portion 29b is provided. According to this configuration, it is possible to prevent the metal rotation-locked portion 48 from hitting the metal rotation-locked portion 74 to generate a collision noise between the metals. 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 29b of the shoulder cover 29, and the rotation of the lid body 11 is prevented. Movement is restricted to about 90 degrees.

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

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

  In the lid-side shaft portion 8b and the drive shaft portion 8d, the track shape means 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. Refers 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 via 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 via the lid side shaft portion 8b and the lid side engagement hole 44. The lid 11 is rotated in the closing direction by the force transmitted to the lid reinforcing plate 40 of the lid 11, and the lid 11 is closed. As described above, the non-circular portion of the hinge pin 8 is used as an input unit that receives a force acting on the hinge pin 8 or an output unit that outputs a 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) orthogonal to the pair of left and right side reinforcing portions 41a and the side reinforcing body 42, and extends from the end side to the center. The shaft main body 8a, the lid side shaft portion 8b, the main body side shaft portion 8c, and the drive shaft portion 8d face toward the side. The lid-side shaft portion 8b has a non-circular track shape in a 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 8c has a circular shape in a sectional view, and is axially supported by a circular bearing hole 73 formed in the hinge reinforcing body 70. The drive shaft portion 8d has a non-circular track shape in a sectional view, and engages with a drive output portion (not shown) formed 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 type rice cooker 1, when the lid body 11 is rotated in the opening direction, the pivotally locked 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 secured. Therefore, the heating cooker 1 has a rotation locking strength sufficient to lock the lid 11 that is rotated in the opening direction with the cooker body 10.

  It should be noted that, in order to facilitate understanding of the present invention, description has been given using specific configurations and numbers, but the present invention is not limited to the specific configurations and numbers of the above-described embodiments, It is possible to include various modifications that can be considered without departing from the content described in the claims.

  In the above-described embodiment, the hinge reinforcing portion 70 is configured as the metal hinge reinforcing body 70 that is separate from the body reinforcing plate 50. The hinge reinforcement portion 70 is integrated with the metal body reinforcement plate 50 by, for example, forming a predetermined hinge reinforcement shape by extending a part of the body reinforcement body 51 of the body reinforcement plate 50 or the rear attachment portion 56 rearward. It is also possible to adopt a configuration that is formed as a unit.

  The lock receiving portion 29b may be configured such that the shoulder cover 29 is integrated with the shoulder member 32 and formed on the left and right above the hinge connection portion 21 of the integrated shoulder member 32. The lock receiving portion 29b is attached to the rotation locking portion 74 of the hinge reinforcing body 70 or the rotation locked portion 48 of the lid reinforcing plate 40 as another cap-shaped member made of an elastic body such as an elastomer. Alternatively, it may be arranged between the rotation locking portion 74 and the rotation locking portion 48.

  The non-circular portion formed on the hinge pin 8 may have any shape as long as it engages with a corresponding engaging hole or the like to transmit a force, and has a circular shape with a key groove or a regular hexagonal shape in a cross-sectional view. It can have various shapes such as an elliptical shape and a regular polygonal shape. The corresponding engagement holes and the like have a shape complementary to the non-circular portion formed on the hinge pin 8.

  The drive unit 7 can be arranged 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 formed of a non-circular portion in a sectional view, and the lid side shaft portion 8b may be formed of a circular portion in a 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 body 11, for example, a rubber elastic material such as silicone rubber, fluorine rubber, urethane rubber, or a polymer elastic body such as an elastomer material is used. It is also possible to adopt a mode in which a flexible gap buffer composed of Since the gap buffer flexibly and elastically bends, it is possible to prevent unintended interference of fingers with the cooker main body 10 and the lid 11. Further, the gap buffer may be in a detachable form or a non-removable fixed form. The present invention can be applied to one in which the lid 11 is automatically closed by an electric motor and one in which the lid 11 is manually closed.

  The present invention has been described with reference to the pressure type rice cooker 1 which cooks brown rice which is hard to pass through as a heating cooker. However, heating cooking under other high pressure (for example, shank meat, spare ribs, curry or stew). It is also applicable to pressure cookers that cook stewed foods such as cooked beans, grains and root vegetables). The present invention is also applied to a pressure type or non-pressure type rice cooker that cooks rice, and a heating cooker that heats and cooks other cooked foods (for example, cake dough, bread, yogurt, steamed food). It 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 portion 8c Body side shaft portion 8d Drive shaft portion 9 Hinge bush 10 Rice cooker body (cooker body)
11 Lid 12 Body 13 Closing Operation Member 14 Upper Panel 15 Display 16 Opening Operation Member 17 Steam Discharge Port 18 Heat Sink 19 Operation Part 21 Hinge Connection Part 22 Bottom Body 23 Engaging Claw Part (Engaging Part)
25 Outer member 26 Inner member 28 Hinge cover 29 Shoulder cover 29a Inclined part 29b Lock receiving part 32 Shoulder member 34 Decorative cover 36 Body ornament 40 Lid reinforcing plate 41 Lid reinforcing main body 41a Side reinforced part 41c Front reinforced part 41d Rear reinforced Part 41h Front side part 41i Intermediate part 41j Rear side part 42 Side reinforcement 42h Front side part 42i Intermediate part 42j Rear side part 43 Hinge receiving part 44 Lid side engaging hole 45 Shoulder engaged part 46 Guide part 47 Engaging opening ( Engaged part)
48 Rotation Locked Part 49 Bar Attachment Part 50 Body Reinforcement Plate 51 Body Reinforcement Body 51a Lower Surface (Rear Locked Part)
52 Side portion 53 Front mounting portion 54 Front locked hole (front locked portion)
56 Rear mounting part 60 Hook receiving reinforcement 61 Upper plate 62 Leg 63 Lower plate 64 Front abutment 65 Front locking projection 70 Hinge reinforcement (hinge reinforcement)
71 Main Body 72 Shaft Support 73 Bearing Hole 74 Rotation Locking Part 75 Mounting Part 76 Rear Locking Protrusion

Claims (5)

A cooker body that houses a pot,
A lid configured to be rotatable around the hinge pin about the cooker body;
A metal body reinforcing plate that constitutes a part of the cooker body,
A metal-made hinge reinforcing portion, which is disposed on the body reinforcing plate and axially supports the hinge pin, is provided with a plate-like rotation locking portion extending in the front-rear direction and constitutes a part of the lid body. On the metal lid reinforcing plate to be
A heating cooker, wherein when the lid is rotated in the opening direction, the pivotally locked portion is locked by a plate thickness portion of the pivotal locking portion.   The cooking device according to claim 1, wherein the rotation locking portion is formed above the 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 provided between the rotation engagement portion and the rotation engagement portion.   The cooking device according to claim 3, wherein the engagement receiving portion is formed on a synthetic resin shoulder cover disposed above the hinge connecting portion of the synthetic resin shoulder member.   The cooking device according to claim 4, wherein the shoulder cover has an inclined portion that is inclined downward toward the pot.

Images