JP4055669B2 - rice cooker - Google Patents

Description

  The present invention relates to a rice cooker provided with a lid having a detachable steam cylinder.

  Conventionally, this type of rice cooker has been configured as shown in FIG. Hereinafter, the configuration will be described.

  As shown in FIG. 7, the rice cooker main body 21 is formed in a substantially cylindrical shape with an upper surface opened, and a protective frame 22 that is a pot storage portion is disposed inside the rice cooker main body 21, and this protective frame A pot 23 is detachably disposed in the inside 22. A lid 24 is attached to the upper portion of the rice cooker body 21 so as to be freely opened and closed. An inner lid 26 having a steam port 25 is disposed on the lower surface of the lid 24, and the upper portion communicates with the steam port 25. A steam passage 27 for discharging the steam inside the rice cooker body 21 is provided.

  Further, a steam cylinder 28 that is detachable from the lid 24 is disposed above the steam passage 27. A valve packing 30 is disposed at the fitting portion 29 between the steam cylinder 28 and the lid body 24 to seal the fitting portion 29 and prevent the steam from leaking from the fitting portion 29.

Further, the valve packing 30 is provided with a claw portion 31 that is convex in the outer peripheral direction, and the claw portion 31 maintains the fitting with the lid body 24 (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 10-201620

  However, in the configuration of the fitting portion of the conventional steam cylinder 28, there is a problem that the attachment / detachment force at the time of attaching / detaching the steam cylinder 28 is increased due to variations in parts, and the feeling of attachment / detachment is lowered. For example, when the gap dimension between the fitting portion of the steam tube 28 and the lid 24 has become small due to component variations, the attaching / detaching force of the steam tube 28 is increased, and the attachment / detachment feeling becomes hard.

  Also, if the attachment / detachment force is large when the steam cylinder 28 is attached, rice may be cooked in a state where the steam cylinder 28 is not completely inserted. Therefore, the seal between the steam cylinder 28 and the valve packing 30 is incomplete, and during rice cooking When steam is kept warm, the steam passage 27 is cooled to the outside air, which may cause local whitening of the rice under the steam port 25, which may deteriorate the performance of the rice cooker.

  The present invention solves the above-described conventional problems, and aims to stabilize the attachment and detachment force between the steam cylinder and the lid, improve the attachment / detachment feeling, and improve the usability of the rice cooker.

  To achieve the above object, the present invention detachably stores a pan in a rice cooker body, covers the top opening of the rice cooker body with a lid, and has a steam port on the bottom surface of the lid. A lid is provided, and a steam cylinder that relays between the steam port and the outside of the rice cooker body is detachably provided on the lid, and the steam cylinder has a cylindrical valve packing having a claw at a fitting portion with the lid, A groove portion is provided in a side contact portion with the valve packing of the steam cylinder.

  Thereby, it can stabilize to the attachment or detachment force of a steam cylinder and a cover body, makes a feeling of attachment / detachment favorable, and can improve the usability of a rice cooker.

  As described above, according to the first aspect of the present invention, the inner lid having the steam port is provided on the lower surface of the lid, and the steam cylinder that relays between the steam port and the outside of the rice cooker body is attached to and detached from the lid. Since the steam cylinder has a cylindrical valve packing having a claw at a fitting portion with the lid, and a groove at a side contact portion with the valve packing of the steam cylinder, the steam cylinder is a lid. When attaching to and detaching from the steam cylinder, the valve packing can be released into the groove of the steam cylinder, which can stabilize the attachment and detachment force aimed at the design of the steam cylinder and lid, improve the feeling of attachment and detachment, and improve the usability of the rice cooker. Can be improved.

  According to the second aspect of the present invention, the groove portion extends to the lower surface contact surface of the steam cylinder and the valve packing, and the valve packing includes the convex portion that contacts the side surface portion of the groove portion extending upward from the lower surface contact surface. Since there is a gap between the upper surface of the convex part and the upper surface of the groove part, the thickness of the valve packing can be partially increased, and when the steam cylinder is attached to and detached from the lid, the deflection of the valve packing is used. By doing so, it is possible to stabilize the attachment / detachment force intended for the design of the steam cylinder and the lid, and to improve the attachment / detachment feeling.

  According to the third aspect of the present invention, since the side surface abutting portion with the valve packing of the steam cylinder located on the back surface of the claw portion of the valve packing has the groove portion, when the steam cylinder is attached to and detached from the lid body, In addition, the valve packing in the vicinity of the claw portion can be partially released into the groove portion of the steam cylinder, and the attachment / detachment force intended for the design of the steam cylinder and the lid can be stabilized, and the attachment / detachment feeling can be improved.

According to the fourth aspect of the present invention, the gap between the upper surface of the claw portion of the valve packing and the surface of the valve packing facing the upper surface of the claw portion is based on the thickness of the fitting portion of the lid with the valve packing. Since it is configured to be small, the valve packing of the lid and the fitting part can be fixed by the gap between the upper surface of the claw part of the valve packing and the surface of the valve packing opposite to the upper surface of the claw part. Can be prevented.

  Invention of Claim 1 of this invention is a rice cooker main body, the pan accommodated in the said rice cooker main body so that attachment or detachment is possible, the cover body which covers the upper surface opening part of the said rice cooker main body so that opening and closing is possible, An inner lid having a steam port provided on a lower surface of the lid, and a steam cylinder that is detachably provided on the lid and relays between the steam port and the outside of the rice cooker body, wherein the steam cylinder includes the lid and Having a cylindrical valve packing having a claw portion in the fitting portion, and having a groove portion in a side contact portion with the valve packing of the steam tube, when attaching and detaching the steam tube to the lid, The valve packing can be escaped to the groove portion of the steam cylinder, and it can be stabilized to the detachment force intended for the design of the steam cylinder and the lid, the feeling of attachment / detachment is improved, and the usability of the rice cooker can be improved.

  According to a second aspect of the present invention, in the first aspect of the present invention, the groove portion extends to the lower surface contact surface of the steam cylinder and the valve packing, and the valve packing is connected to the upper surface of the groove portion. A convex portion that abuts the side surface portion, and a gap is provided between the upper surface of the convex portion and the upper surface of the groove portion, and the thickness of the valve packing can be partially increased; By using the deflection of the valve packing when attaching and detaching, the attachment and detachment force designed for the steam cylinder and the lid can be stabilized, and the attachment and detachment feeling can be improved.

  Invention of Claim 3 has a groove part in the side surface contact part with the valve packing of the steam cylinder located in the back surface of the nail | claw part of valve packing in the invention of the said Claim 1 or 2, When attaching / detaching the steam cylinder to / from the lid, the valve packing near the claw can be partly released in the groove of the steam cylinder, stabilizing the mounting force of the steam cylinder and the lid design target, and a good feeling of attachment / detachment Can be.

The invention according to claim 4 is the invention according to any one of claims 1 to 3 , wherein the gap between the upper surface of the claw portion of the valve packing and the surface of the valve packing facing the upper surface of the claw portion is the same as that of the lid. It is configured to be smaller than the thickness of the fitting portion with the valve packing, and the valve packing and fitting portion of the lid body are separated by a gap between the upper surface of the claw portion of the valve packing and the surface of the valve packing facing the upper surface of the claw portion. It can be fixed and can prevent rattling when the steam cylinder is mounted.

  Embodiments of the present invention will be described below with reference to the drawings.

Example 1
As shown in FIG. 1, the rice cooker main body 1 is formed in a substantially cylindrical shape with an upper surface opened, and a protective frame 2 that is a pot storage portion is disposed inside the rice cooker main body 1. A pan 3 having a water level line drawn on the inner peripheral surface is detachably disposed inside 2. The pot heating coil 4 heats the pot 3, and the pot 3 is electromagnetically heated by the pot heating coil 4 to perform rice cooking and heat insulation cooking. The heating control board 5 controls the high frequency power supplied to the pan heating coil 4. The bottom sensor 6 detects the temperature in the pan 3 during rice cooking and heat insulation, and sends a signal to the heating control board 5.

  The lid body 7 is attached to the upper portion of the rice cooker body 1 so as to be freely opened and closed. An inner lid 9 having a steam port 8 is disposed on the lower surface of the lid body 7, and the upper portion of the inner lid 9 communicates with the steam port 8. A steam passage 10 for discharging the steam in the cooker 3 to the outside of the rice cooker body 1 is provided. Further, a steam cylinder 11 detachable from the lid body 7 is disposed above the steam passage 10. A valve packing 12 is provided at the fitting portion between the steam cylinder 11 and the lid body 7 to seal the fitting portion, thereby preventing steam from leaking from the fitting portion. Further, the valve packing 12 is provided with a claw portion 13 that is convex in the outer peripheral direction, and the claw portion 13 maintains the fitting with the lid body 7. As shown in FIG. 2, the side surface abutting portion 14 of the steam cylinder 11 with the valve packing 12 has a groove portion 15.

  The operation of the above configuration will be described. The groove portion 15 allows part of the valve packing 12 to escape to the groove portion 15 when the valve packing 12 comes into contact with the fitting portion 16 of the lid body 7 with the valve packing 12 when the steam cylinder 11 is attached to and detached from the lid body 7. Playing a role. By allowing the valve packing 12 to escape to the groove portion 15, friction between the valve packing 12 and the fitting portion 16 of the lid body 7 with the valve packing 12 can be reduced, and the feeling of attachment / detachment during attachment / detachment can be improved. it can.

  Thus, according to the present embodiment, it is possible to improve the feeling of attachment / detachment at the time of attaching / detaching the steam cylinder 11 to / from the lid body 7, and at the same time, even if the attachment / detachment force varies in the dimensions of the components, Stable attachment and detachment force can be realized with a range of 10N.

(Example 2)
As shown in FIG. 3, the groove portion 15 is provided in the side surface contact portion 14 of the steam cylinder 11 with the valve packing 12, and the groove portion 15 continues to the lower surface contact surface 17 of the steam tube 11 and the valve packing 12. The valve packing 12 has a convex portion 18 that continues upward from a lower surface abutting surface 17 with the steam cylinder 11. Further, the convex portion 18 and the side surface portion of the groove portion 15 of the steam cylinder 11 are in contact with each other, and there is a gap between the upper surface of the convex portion 18 of the valve packing 12 and the upper surface of the groove portion 15 of the steam cylinder 11. Other configurations are the same as those of the first embodiment.

  The operation of the above configuration will be described. In the process of inserting the steam cylinder 11 into the lid body 7, first, the fitting portion 16 of the lid body 7 with the valve packing 12 comes into contact with the portion having the convex portion 18 of the valve packing 12. At this time, in particular, when the valve packing 12 is formed of rubber or elastomer, the valve packing 12 bends when contacting the fitting portion 16 of the lid 7 with the valve packing 12, and the steam cylinder 11 is made smooth. Can be inserted.

  Further, when the fitting portion 16 with the valve packing 12 of the lid body 7 comes into contact with the gap between the upper surface of the convex portion 18 of the valve packing 12 and the upper surface of the groove portion 15 of the steam cylinder 11, the valve packing 12 A part can escape to the gap, and the friction between the valve packing 12 and the fitting portion 16 of the valve packing 12 of the lid 7 can be reduced. This effect is the same in the process of removing the steam cylinder 11 from the lid 7.

  Thus, according to the present embodiment, it is possible to improve the feeling of attachment / detachment at the time of attaching / detaching the steam cylinder 11 to / from the lid body 7, and at the same time, even if the attachment / detachment force varies in the dimensions of the components, Stable attachment and detachment force can be realized with a range of 10N.

(Example 3)
As shown in FIG. 4, a groove portion 15 is provided in a side contact portion 14 with the valve packing 12 of the steam cylinder 11 located on the back surface of the claw portion 13 of the valve packing 12. Other configurations are the same as those of the first embodiment.

  The operation of the above configuration will be described. The claw portion 13 of the valve packing 12 is convex in the outer peripheral direction of the valve packing 12, and the claw portion 13 is fitted to the valve packing 12 of the lid body 7 in order to fix the steam cylinder 11 to the lid body 7. The configuration overlaps with the portion 16.

  In the process of inserting the steam cylinder 11 into the lid body 7, first, the fitting portion 16 of the lid body 7 with the valve packing 12 comes into contact with the portion having the convex portion 18 of the valve packing 12. At that time, in particular, when the valve packing 12 is formed of rubber or elastomer, the valve packing 12 is bent when the lid 7 comes into contact with the fitting portion 16 of the valve packing 12 and the steam cylinder 11 is smoothly formed. Inserted.

  Further, when the claw portion 13 of the valve packing 12 comes into contact with the fitting portion 16 of the lid body 7 with the valve packing 12, the claw portion 13 of the valve packing 12 is in contact with the valve packing 12 of the steam cylinder 11 located on the back surface thereof. The groove portion 15 in the side contact portion 14 can locally escape the vicinity of the claw portion 13 of the valve packing 12, and the friction of the fitting portion 16 between the valve packing 12 and the valve packing 12 of the lid 7 is reduced. be able to. This effect is the same in the process of removing the steam cylinder 11 from the lid 7.

  Thus, according to the present embodiment, it is possible to improve the feeling of attachment / detachment at the time of attaching / detaching the steam cylinder 11 to / from the lid body 7, and at the same time, even if the attachment / detachment force varies in the dimensions of the components, Stable attachment and detachment force can be realized with a range of 10N.

( Reference Example 1 )
As shown in FIG. 5, the side surface contact portion 14 of the valve packing 12 with the steam cylinder 11 has a groove portion 19. Here, the thickness of the part which becomes the side surface contact part 14 with the steam cylinder 11 of the valve packing 12 is configured to be thicker than that of the conventional valve packing 12. Other configurations are the same as those of the first embodiment.

  The operation of the above configuration will be described. In the process of inserting the steam cylinder 11 into the lid body 7, first, the fitting portion 16 of the lid body 7 with the valve packing 12 comes into contact with the lower portion of the valve packing 12. In particular, when the valve packing 12 is formed of rubber or elastomer, the lower portion of the valve packing 12 is thick, so there is a sufficient allowance for the valve packing 12, and the valve packing of the lid 7 is sufficient. The steam cylinder 11 is smoothly inserted while the valve packing 12 is deflected when coming into contact with the fitting part 16.

  Furthermore, when the fitting part 16 with the valve packing 12 of the lid 7 comes into contact with the groove part 20 of the valve packing 12 next, the bent valve packing 12 can be released into the gap between the groove part 20 and the steam cylinder 11, Friction between the valve packing 12 and the fitting portion 16 between the valve packing 12 of the lid 7 can be reduced. This effect is the same in the process of removing the steam cylinder 11 from the lid 7.

As described above, according to this reference example, it is possible to improve the feeling of attachment / detachment when attaching / detaching the steam cylinder 11 to / from the lid body 7, and at the same time, even if the attachment / detachment force varies in the dimensions of the component parts, Stable attachment and detachment force can be realized with a range of 10N.

(Example 4 )
As shown in FIG. 6, a gap 20 (a in the figure) between the upper surface of the claw portion 13 of the valve packing 12 and the surface of the valve packing 12 facing the upper surface of the claw portion 13 is fitted with the valve packing 12 of the lid 7. It is configured to be smaller than the thickness of the joint portion 16. Other configurations are the same as those of the first embodiment.

  The operation of the above configuration will be described. When the valve packing 12 is formed of rubber or elastomer, the valve packing 12 has a deflection. Therefore, the lid 7 is placed in a gap 20 (a in the drawing) between the upper surface of the claw portion 13 and the surface of the valve packing 12 facing the claw portion 13. The fitting part 16 with the valve packing 12 can be fixed so as to bite, and rattling when the steam cylinder 11 is mounted can be prevented.

Side view in which the rice cooker according to the first embodiment of the present invention is partially cut away. The principal part expanded sectional view of the state which attached and detached the steam pipe of the rice cooker to the lid. Main part sectional drawing of the state which attached and detached the steam pipe | tube of the rice cooker of 2nd Example of this invention to the cover body. Sectional drawing of the principal part of the state which attached and detached the steam pipe | tube of the rice cooker of the 3rd Example of this invention to the cover body. Sectional drawing of the principal part of the state which attached and detached the steam pipe | tube of the rice cooker of the 1st reference example of this invention to the cover body. Sectional drawing of the principal part of the state which attached and detached the steam pipe | tube of the rice cooker of the 4th Example of this invention to the cover body. Side view of a conventional rice cooker with a part cut away

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rice cooker main body 3 Pan 7 Lid body 8 Steam outlet 9 Inner lid 11 Steam cylinder 12 Valve packing 13 Claw part 14 Side surface contact part 15 Groove part 16 Fitting part

Claims (4)

A rice cooker body, a pan that is detachably stored in the rice cooker body, a lid that covers the upper surface opening of the rice cooker body so as to be openable and closable, and a steam port provided on the lower surface of the lid A lid, and a steam cylinder that is detachably provided on the lid body and relays the steam port and the outside of the rice cooker body, and the steam cylinder has a cylindrical shape having a claw portion at a fitting portion with the lid body. The rice cooker which has a valve packing and has a groove part in a side contact part with the valve packing of the steam pipe. The groove portion continues to the lower surface contact surface of the steam cylinder and the valve packing, and the valve packing has a convex portion that contacts the side surface portion of the groove portion that continues upward from the lower surface contact surface, and the upper surface of the convex portion and the groove portion The rice cooker of Claim 1 which has a clearance gap between the upper surfaces of. The rice cooker according to claim 1 or 2, wherein a groove portion is provided in a side contact portion with the valve packing of the steam cylinder located on the back surface of the claw portion of the valve packing. The gap between the upper surface and the upper surface and the surface opposing the valve packing of the pawl portion of the pawl portion of the valve packing, configuration and the claims 1-3 to be smaller than the thickness of the fitting portion between the valve gasket of the lid The rice cooker of any one of Claims.

Images