JPH0728807B2 - Rice cooker lid - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a structure of a lid portion of a rice cooker that is routinely used in homes and the like.

2. Description of the Related Art Recently, rice cookers are required to have many functions, their usability and excellent design. Therefore, the structure becomes complicated, and some problems remain in terms of strength.

As a conventional rice cooker provided with a hook lever capable of opening the lid body by one-touch operation on the rice cooker main body, one shown in FIG. 3 is known. That is, in FIG. 3, the rice cooker body 51 is a body 52.
And an inner frame 53 provided inside thereof and an upper frame 54 on the upper side. A heating element 55 for heating rice and a thermostat 56 for detecting the completion of rice cooking are provided on the inner bottom portion of the inner frame 53, and a removable rice cooking pot 57 is further provided. Reference numeral 58 denotes a lid, which is a box-shaped outer lid 58a, an outer lid cover 58b, and a seal packing.
The outer lid cover 58b is provided with an inner lid 59 held therein, and is hingedly supported by a hinge 61 on one side of the rice cooker main body 51 by a shaft 61. Also, the shaft 61
A spring 62 that always biases the lid 58 in the direction of opening in relation to
In addition, a damper 63 and a damper spring 64 are provided near the shaft 61 in order to reduce a shock when the lid 58 is opened.

On the other hand, inside the rice cooker main body 51 located on the side opposite to the side where the lid body 58 is rotatably supported, a hook lever 65 for engaging the lid body 58 in the open state is provided with a shaft 66 and a biasing spring 67. The hook lever 65 is exposed to the outside from the side wall of the rice cooker body 61 as an operating portion 68 for pressing a part of the hook lever 65. Further, the lid body 58 facing the hook lever 65 is provided with an engaging hook 69. By pushing the operation portion 68, the hook lever 65 and the hook 69 are disengaged, and the lid 58 is opened.

However, in the above-described conventional configuration, both the outer lid 58a and the outer lid cover 58b are formed of a thermoplastic resin, and the lid is warped during molding and the lid is heated due to a temperature rise during heating by heating the heating element 55. Due to the temporary thermal deformation of the body 58, a gap with the upper frame 54 was likely to occur. In this case, the hinge portion 60 is relatively firmly fixed, is hard to be deformed, and is deformed particularly on the hook lever 65 side. In order to prevent this gap, it is necessary to take measures by increasing the thickness of the lid 58 to increase the rigidity or to make it a shape that does not easily deform, for example, a round shape, and there are many restrictions in terms of design. There was a problem.

Also, the operation unit and the display unit (not shown) of the rice cooker are
As described above, the shape of the lid 58 is restricted, and for example,
When stored in the lid body 58, the thickness of the lid body 58 is further increased to cause a defect in appearance, and when the lid body 58 is housed in the side surface of the rice cooker body 51, there is a drawback that operability is deteriorated.

In addition, the rice cooker 57 and seal packing 58c are normally used.
Although the steam etc. generated from is blocked, if foreign matter such as rice grains adheres between the rice cooking pot 57 and the seal packing 58c,
There is a risk that the above-mentioned leakage will occur, dew condensation water will enter the rice cooker main body 51 from the hook 69 by hooking the hook lever 65, and will drip into the electric component (not shown) to enter the unsafe mode.

The present invention solves the above-mentioned conventional problems, and it is a first object of the present invention to provide a lid of a rice cooker that is rigid while reducing constraints on the external design.

The second purpose is to make the lid more rigid without further lifting the parts.

A third object is to seal the steam leaking from the pot, prevent the steam from entering the electric circuit and the like provided in the upper frame, and provide a safer lid.

Means for Solving the Problem A first means of the present invention for achieving the above-mentioned first object is a rice cooker body having an upper surface opened, an upper frame attached to the upper surface opening, and the upper surface opening. A lid that covers the openable and closable portion, a hinge that pivotally supports the lid on the one side of the rice cooker main body, and a hinge that is located substantially opposite to the hinge and provided on the upper frame. An outer lid that forms an outer surface of the lid body, an outer lid cover that forms an inner surface, and a heat dissipation plate that is attached to the outer lid cover. Then, at a position corresponding to the engaging means of the outer lid cover, a standing wall portion provided with a concave portion which is accommodated in the upper frame when closed and engages with the engaging means is provided.

A second means of the present invention for achieving the second object is to integrally mount and fix an outer lid, an outer lid cover, and a heat dissipation plate at least around the engaging means side.

A third means of the present invention for attaining the third object is that the engaging means is a hook lever rotatably supported by an upper frame, and an engaging claw of the hook lever is provided on a standing wall portion. Is provided with a recess for engaging with.

In the above first means, since the vertical wall portion provided on the outer lid cover is provided with the concave portion for engaging the engaging means, the depth can be greater than the concave portion to increase the mechanical strength and heat generation. Even if the lid is about to be thermally deformed when the body is energized and heated, the strength of the lid is maintained by the stand wall portion provided on the outer lid cover, and the deformation is prevented.

In the second means, the heat radiation plate is attached and fixed integrally with the lid, so that the strength is further increased.

In the third means, when steam or the like leaks out of the pot, it hits a recess provided in the stand wall to prevent the steam or the like from entering the main body.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1 and FIG. 2, reference numeral 1 denotes a rice cooker main body, a body 2 having an open upper surface, an inner frame 4 which is located inside the body 2 and constitutes a storage portion for a pan 3, and the body 2 The upper frame 5 is installed in the upper opening of the.

Reference numeral 7 denotes a lid body that covers the opening of the upper surface of the body 2 in an openable and closable manner. The lid body 7 is rotatably supported by a shaft 9 of a hinge portion 8.

Reference numeral 10 denotes an opening / closing spring which is wound around the shaft 9 and urges the lid 7 in a direction to open it.

A hook lever 11 is provided on the upper frame and is located substantially opposite to the hinge portion 8. The hook lever 11 is rotatably supported by the upper frame 5 by a hook lever shaft 14. .

Reference numeral 11a is a claw provided at the tip of the hook lever 11.

Reference numeral 11b is a spring provided on the opposite side of the claw 11a via the hook lever shaft 14 and biasing the hook lever 11 toward the lid 7.

The lid 7 includes an outer lid 15 forming an outer surface, an outer lid cover 16 forming an inner surface, and a heat radiating plate 17.

Reference numeral 18 denotes an inner lid provided on the lower surface of the heat dissipation plate 17.

Reference numeral 19 denotes a pan packing which is provided on the outer periphery of the heat dissipation plate 17 and is brought into pressure contact with the pan 3 when the lid 7 is closed.

Reference numeral 13 is an upper frame ring on which the pot 3 is placed.

Reference numeral 16a denotes a stand wall portion provided on the hook lever 11 side of the outer lid cover 16 and housed in the upper frame 5 when closed.
It is formed integrally with the outer cover 16.

Reference numeral 21 is a locking hole into which the locking claw 11a of the hook lever 11 is inserted when closed, and the locking hole 21 is formed with a recess at the corresponding position of the vertical wall portion 16a integrally with the vertical wall portion 16a. It is configured by

Reference numeral 20 denotes an operation unit which is provided on the lid body 7 and which operates the energization of the rice cooker body 1.

Reference numeral 12a is a display substrate including the display unit 12 provided on the front surface of the upper frame 5.

Reference numeral 22 is a heating element provided on the inner bottom of the rice cooker body 1 for heating rice.

Reference numeral 24 is a fixing screw that integrally attaches and fixes the outer lid 15, the outer lid cover 16, and the heat dissipation plate 17, and two places near the hinge portion 8,
Two places are provided near the hook lever 11 side on the opposite side.

23 is a thermostat that detects the completion of cooking rice.

The operation of the lid of the rice cooker configured as described above will be described below.

When the heating element 22 is electrically heated, the lid 7 tends to be thermally deformed, but the vertical wall portion 16a provided in the outer lid cover 16 maintains the strength and prevents the deformation.

In addition, when foreign matter adheres between the pan 3 and the pan packing 19 to deteriorate the sealing property and steam or the like leaks out of the pan 3,
It does not enter into the upper frame 5 through the hook lever 11 because it contacts the concave portion provided on the upright wall portion 16a and quickly dew on the upper frame 5 due to the temperature difference and drops onto the upper frame 5.

As described above, according to this embodiment, the rice cooker body 1 having an open upper surface, the upper frame 5 attached to the upper opening,
A lid 7 that covers the upper opening so as to be openable and closable, and the lid 7
On one side of the rice cooker main body 1, a hinge portion 8 that is pivotally supported in an openable and closable manner, and the rice cooker main body 1 and the above-mentioned rice cooker main body 1 that are located substantially opposite to the hinge portion 8 and provided on the upper frame 5. Lid 7
An outer lid 15 forming an outer surface of the lid body 7, and an outer lid cover 16 forming an inner surface thereof.
And a heat radiating plate 17 attached to the outer lid cover 16, which is housed in the upper frame 5 when closed to engage the engaging means at a position corresponding to the hook lever 11 of the outer lid cover 16. A stand wall portion 16a having a recess for fitting is provided, and the outer lid 15, the outer lid cover 16 and the heat dissipation plate 17 are provided around the hinge portion 8,
And, it is attached and fixed integrally around the hook lever 11 side,
The outer wall cover 16 is provided on the hook lever 11 side where the warp is likely to occur by providing a recess, of which the sealing wall 25 is a part, with which the engaging claw of the hook lever 11 engages with the standing wall portion 16a. Since the standing wall portion 16a is integrally provided on the lid, the warp strength of the lid body 7 becomes very strong.
Since it is housed on the back surface of the upper frame 5 when closed, it does not affect the appearance of the lid 7. Therefore, as the lid 7, the overall thickness can be reduced while maintaining rigidity, the number of electrical components is relatively small, and the frequently used operating section 20 can be housed in the lid 7.
In addition, the display portion 12 can be housed with an inclination provided on the upper frame 5, and the lid 7
Since the upper frame 5 and the upper frame 5 can be provided as a constant surface, both operability and appearance can be improved.

Further, since the outer lid 15, the outer lid cover 16 and the heat dissipation plate 17 are integrally attached and fixed, the outer lid 15 and the outer lid cover 16 are more firmly fixed, and the outer lid 15 and the outer lid are different due to the difference in heat shrinkage. cover
There is no gap in the fitting portion with 16, and the warp strength is stronger. Further, since the stop screw 24 which is conventionally used is shared, no additional parts are added and the external appearance is not adversely affected.

Furthermore, when foreign matter such as rice grains adheres between the pan 3 and the pan packing 19 and the steam in the pan 3 leaks out due to the deterioration of the sealing property, the sealing wall 25 causes the hook lever 11 to directly contact the hook lever 11. No steam hits. In this case, the leaked steam hits the inner wall of the upright wall portion 16a, and is quickly condensed due to the temperature difference and drips onto the upper frame 5, so that the hook lever 11 may penetrate and enter the upper frame 5. In addition, the internal display unit 12 and the like are not adversely affected.

EFFECTS OF THE INVENTION As described above, in the first means of the present invention, the rice cooker main body having an open upper surface, the upper frame attached to the upper surface opening portion, and the lid body that covers the upper surface opening portion openably and closably. , A hinge part that rotatably supports the lid body on one side of the rice cooker main body, and the rice cooker main body and the lid that are provided on the upper frame at a position substantially opposite to the hinge part. An outer lid forming an outer surface, an outer lid cover forming an inner surface, and a heat dissipation plate attached to the outer lid cover. A stand wall portion provided on the outer lid cover is provided at a position corresponding to the engaging means of the lid cover, by providing a standing wall portion having a recessed portion which is housed in the upper frame when closed and engages the engaging means. Since it is provided with a recess for engaging the engaging means, it has a depth greater than that of the recess. The mechanical strength can be increased, and even if the lid body is heated and deformed when the heating element is energized and heated, the strength of the lid body is maintained by the stand wall portion provided on the outer lid cover, and the deformation can be prevented. As a result, the lid body can be thinned without lowering its warp strength, restrictions on the shape can be reduced, and a design with a good appearance can be realized. Further, the operation section and the display section can be separated, and the operability is improved.

In the second means, the outer lid, the outer lid cover, and the heat dissipation plate are integrally attached and fixed at least at the periphery of the engaging means side, so that there is no additional component or deterioration in appearance, and thus the lid body is made stronger. It can be anything.

In the third means, the engaging means is a hook lever rotatably supported by the upper frame, and the standing wall portion is provided with a concave portion with which the engaging claw of the hook lever engages, so that from the inside of the pan. The leaked steam can be sealed, the steam can be prevented from entering the electric circuit, etc., and a safer lid can be provided.

[Brief description of drawings]

FIG. 1 is a sectional view showing the internal structure of the essential parts of the rice cooker in one embodiment of the present invention, FIG. 2 is a partial sectional view of the same, and FIG.
The figure is a partial cross-sectional view of a conventional rice cooker. 1 ... rice cooker body, 5 ... upper frame, 7 ... lid, 8 ... hinge part, 11 ... hook lever, 11a ... claw, 15 ... outer lid, 16 ... outer lid cover, 17 ...... Heat sink, 16a …… Stand wall, 24 …… Set screw, 21 …… Lock hole, 25 …… Sealing wall.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-3-66314 (JP, A) Actually open Sho 60-116923 (JP, U) Actually open Sho 63-117423 (JP, U)

Claims (3)

[Claims] 1. A rice cooker main body having an upper surface opened, an upper frame attached to the upper surface opening, a lid for opening and closing the upper surface opening, and the lid being one of the rice cooker main body. The lid body is provided with a hinge portion that is pivotally supported in an openable and closable manner, and an engaging means that is provided on the upper frame and that is located substantially opposite to the hinge portion and that engages the rice cooker body and the lid body. An outer lid that forms an outer surface, an outer lid cover that forms an inner surface, and a heat dissipation plate attached to the outer lid cover. The outer lid cover is positioned at a position corresponding to the engaging means, and the upper lid is closed. A lid of a rice cooker provided with a standing wall portion housed in a frame and provided with a recess for engaging the engaging means. 2. The lid of the rice cooker according to claim 1, wherein the outer lid, the outer lid cover and the heat radiating plate are integrally attached and fixed at least around the engaging means side. 3. The hook mechanism according to claim 1, wherein the engaging means is a hook lever rotatably supported by an upper frame, and the vertical wall portion is provided with a recess for engaging an engaging claw of the hook lever. The lid of the rice cooker.