JPH0265809A - Rice boiler - Google Patents

Abstract

PURPOSE:To prevent the deformation of a lid and to improve its work efficiency when the lid is connected with or disconnected from its main body by providing a reinforcing plate between the inner surface of the lid and the other end of a torsion spring which forms a spiral part on its axial part and fits one end of it on the side of main body of the rice boiler and the other end in the inner surface of the lid. CONSTITUTION:A torsion spring 17 has a spiral part 17a which is removably supported through a hollow shaft 12b, and one end 17b thereof is fitted on the side of main body 10 of a rice boiler and the other end 17c is fitted in the inner surface of a lid body 11 through a slot. A reinforcing plate 18 is formed by a metal plate fixed by screws 19 between the other end 17c of the torsion spring 17 and the inner surface of the lid body 11, and is curvedly fitted in being laid across a bending part 11a of the lid body 11 formed on the upper side of an axial part 12. The reinforcing plate 18 prevents the lid body 11 from being deformed by distributing the elastic force applied to the other end 17c of the torsion spring into several ribs formed on the inner surface of the lid body 11. It is also unnecessary to support the torsion spring 17 by hand when assembled, and it is possible to remove therefrom the lid body 11 without disassembling the lid body 11 even if the spring is damaged.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] This invention relates to an improvement in a rice cooker, particularly a rice cooker having an automatic opening lid mechanism.

[Conventional technology]

7 to 9 are cross-sectional views of a conventional rice cooker disclosed in, for example, Japanese Patent Application Laid-Open No. 59-232519.

Il+ is the rice cooker main body, (2) is the lid, (3) is the shaft, and the lid bearing (3a) is provided on the negative side of the lid (2).
A main body bearing (3b) is provided on one side of the rice cooker main body +11, a shaft (3c) is passed between the two bearings, and the lid body (2)
is rotatably supported on the rice cooker body (1). (4)
is the lock part provided on the other side of the rice cooker main body Il+, (5
) is a metal hook provided on the lid body (2) facing this lock part (4), and the lock part (4) is always held by a spring (6).
) is biased in the direction of engagement. (7) is the unlock button.

(8) is a torsion spring into which the spiral part (8a) of the shaft (5C) is fitted, one end of which is placed on the rice cooker main body side, and the other end is brought into contact with the inner surface of the lid (2). There is. (9) is a rib that supports the other end of the torsion spring.

Next, the operation will be explained. As shown in Figure 9, the lid body (
When 2) is in the closed state, the latch (5) is closed to the lock part (4).
) is engaged with. To open the lid (2), the lock release button (7) is pressed and the latch (5) is released from the lock part (4). At this time, the twisting spring (8) rebounds and the lid is released. Push up your body (2).

[Problem to be solved by the invention]

In the conventional rice cooker as described above, when the lid (2) is in the closed state, the elastic force of the torsion spring (8) is always applied to the lid (12).
There was a problem in that the damage was concentrated on the points 1 and 2, causing deformation or cracking of the lid body (2).

In addition, when the shaft (5c) is passed through the assembly time difference body (2) and engaged with the rice cooker main body 11, the other end of the twist spring (8) can be easily removed from the lid body (2) and cannot be twisted by hand ( Fit the shaft (5c) into the cylindrical part (7c) while supporting the lid bearing (3).
There was a problem in that workability was poor because it had to be guided to step a).

This invention was made to solve the above-mentioned problems, and aims to provide a rice cooker whose lid body is not deformed by the elastic force of the torsion spring.

Another object is to improve workability when engaging and disengaging the lid and the rice cooker main body during assembly or repair.

[Means to solve the problem]

The rice cooker according to the present invention includes, as a first means, a rice cooker body having an opening on the top surface, a lid body provided on the top opening of the rice cooker body, and a lid body provided on one side of the rice cooker body, and the lid body as described above. The rice cooker main body I is rotatably supported by a shaft portion, this shaft portion is provided with a spiral portion, one end is provided on the rice cooker main body side, and the other end is provided on the inner surface of the lid body, and this twisting spring is provided with a spiral portion. A reinforcing plate is provided between the other end of the spring and the inner surface of the lid. The second means is one in which, in addition to the first means, a reinforcing plate is provided across the curved inner surface of the lid. A third means, in addition to the first means, is to provide a bent portion on the torsion spring on the lid body side.

The reinforcing plate supports the torsion spring on the lid side.

The fourth means is a rice cooker main body having an opening on the top surface, and a lid provided on the top opening of the rice cooker main body.

It has a bearing provided on one side of the lid body, a shaft cylinder detachably attached to the bearing, a spiral portion supported by the shaft cylinder, one end of which is provided on the rice cooker main body side, and the other end of which is attached to the lid. It is equipped with a torsion spring installed inside the body. Fifth
This means includes, in addition to the fourth means, a reinforcing plate that is provided between the other end of the torsion spring and the inner surface of the lid and supports the torsion spring on the lid.

[For production]

The reinforcing plate in this invention receives the elastic force applied to the other end of the reinforcing plate by twisting and distributes it to the lid body. Further, the bent shape of the reinforcing plate prevents the bending stress applied to the lid body due to the elastic force of the torsion spring.

Further, the reinforcing plate supports the torsion spring on the lid body side provided with the bent portion. The shaft cylinder also supports the helical portion of the torsion spring. Further, the shaft cylinder supports the spiral portion of the torsion spring, and the reinforcing plate supports the torsion spring on the lid side.

〔Example〕

One embodiment of the present invention will be described with reference to FIGS. 1 to 3. In the figure, αQ is the rice cooker body, συ is the lid,
+13 is a shaft part which rotatably supports the lid body (Ill) on the rice cooker body 01.This shaft part is attached to a bearing (+2a) formed on one side of the lid body α1 and The shaft (+2b) is detachably provided, and the shaft (+2b) and the bearing (+2a) are fitted into each other to support the main body bearing (12c) formed on the negative side of the rice cooker main body α. It is made up of 12 pieces.

A3 is the lock part provided on the other side of the rice cooker body fi+.

The hook provided on the lid body (2) facing the lock part 0 is made of metal and is always biased by a spring αS in the direction of engagement with the lock part α3. αQ is a lock release button, and αη is a torsion spring having a spiral portion (+7c) that is supported and inserted into and removed from the shaft cylinder (+21).

One end (+7b) is supported by the rice cooker main body aQ side, and the other end (
17c) is provided on the inner surface of the lid body συ through the elongated hole (Na). 08 is a metal reinforcing plate fixed by a screw α9 between the other end (+7C) of the torsion spring aη and the inner surface of the lid αυ, and is attached to the lid αυ formed above the shaft portion a3.
It is bent and provided astride the bent part (++a) of. (186) is a protrusion that protrudes into a convex shape by pressing and bending at the bent corner of this reinforcing plate ae, ■ is an L-shaped bent part where the inner edge of the reinforcing plate side is bent into an L-shape, and υ is a This is an opening that is a support part provided across the corner of this L-shaped bent part, and has a pilot hole part (21) and a horizontal hole part (21b).
)have. The tip (17d) of the other end (+7c) of the twist spring ση is fitted into this opening Cυ. (2) is a plurality of ribs formed on the inner surface of the lid body αυ and supporting the reinforcing plate αa.

Next, the operation will be explained. When the lid body aυ is occluded.

A strong elastic force acts on the other end (+7c) of the twisting blade aη, and constantly transmits a strong elastic force to the inner surface of the lid body qυ. At this time, there is a reinforcing plate side between the other end (+7G) of this torsion spring and the inner surface of the lid body aυ, and this reinforcing plate side distributes the elastic force applied to the other end (17C) of the torsion spring to multiple ribs. Therefore, no local elastic force is applied to the lid body α, and deformation of the lid body aυ can be prevented. Furthermore, since the reinforcing plate side is provided across the bent part (+ + a) of the lid body συ, the bending stress that moves in the direction of opening the bent part (11ω) of the lid body aυ is suppressed, so that the bent part (11a) Deformation and cracking can be prevented.

Furthermore, as shown in Fig. 3, when fitting the shaft cylinder fb) to the bearing (12a), by fitting and supporting the spiral portion (17a), the torsion spring σD is supported by the lid body aυ. It does not fall off, and there is no need to support the torsion spring ση by hand during the assembly (this makes work easier, and when repairing a defective spring, the shaft (12d) can be removed).

Remove the shaft cylinder (12b) from the bearing (+2c), and remove the spiral part (1
The torsion spring αη can be easily removed from the lid qυ without disassembling the lid αυ by simply releasing the support 7a).

Also, twist the shaft cylinder (12b) into the spiral part (1) of the spring (17).
7ω, the other end (+7c) of the torsion spring αD is fitted into the opening Qυ of the reinforcing plate a8, so that the torsion spring αη does not fall off from the lid body συ.

Since there is no rotational vibration in the vertical direction, engagement between the lid body αυ and the rice cooker main body OI becomes very easy.

Furthermore, as shown in Fig. 4, the inner edge of the reinforcing plate side is bent into a U-shape, and the other end (+70) of the torsion spring αn is inserted therein. A similar effect can be achieved.

In addition, as shown in Figure 5, the twist αη other end (+70
) is bent at the tip (17d) (+7e
) is sandwiched between the side ribs (22a) from both sides, and a rib wall (22b) is provided flatly from the L-shaped bent part (■).When assembling, reinforcing plate o8 is fixed to the lid body (IB) with screw o9. Insert the bent part (17e) of the torsion spring αD into the pilot hole (21-) and slide it sideways to pass through the horizontal hole (21b) and into the opening Qυ.Then, insert the reinforcing plate side with the cover body συ. This bent part (+7e) is attached to the side rib (22a) and the wall lip (2).
2b) into the space formed by. As a result, the movement of the other end (17C) of the torsion spring αη is restricted from the top, bottom, right, left, and rear sides, so that the torsion spring αη is
Work efficiency during assembly is improved because it does not come off from υ and rotational wobbling can be prevented.

In addition, as shown in Fig. 6, the bent portion of the torsion spring αη (
If the reinforcing plate side is formed into a concave shape along line 17e), the same effect as the embodiment shown in FIG. 5 can be obtained.

In addition, the bent portion (+7e
) is bent at a nearly right angle, but by making this bend into a predetermined obtuse angle and pulling it with a predetermined pulling force, it comes off, and by pushing it in with a predetermined pushing force,
The deflection of the bent portion (+7e) allows for free attachment and detachment, improving workability during assembly and repair.

In addition, since the reinforcing plate α$ is made of metal, it will not soften or deteriorate due to heat even if exposed to high temperatures during rice cooking (it can withstand long-term use and has the rigidity to withstand strong elastic force). Therefore, the reinforcing plate αa itself will not be deformed.

Furthermore, when the lid body συ is opened, a stress opposite to that when it is closed acts on the other end σD, but the opening Qυ supports this stress.

No force is applied to parts such as the inner case (not shown) provided on the inner surface of the lid body αυ, so that parts such as the inner case can also be prevented from being deformed.

Further, in the above embodiment, metal is used for the reinforcing plate αe, but it goes without saying that the same effect can be achieved even if other materials with excellent rigidity are used.

〔Effect of the invention〕

As explained above, according to the present invention, the first effect is that by providing the reinforcing plate between the lid and the other end of the torsion spring, the reinforcing plate receives the elastic force applied to the other end of the torsion spring.
By dispersing this elastic force, local deformation and cracking of the lid can be prevented.

As a second effect, by providing a reinforcing plate across the bent inner surface of the lid, the reinforcing plate suppresses bending stress applied to the lid, thereby preventing changes and cracks in the bent portion of the lid.

The third effect is that the twist spring on the lid body side is provided with a bent portion to support the torsion spring on the lid body side, so that the torsion spring does not easily come off from the lid body.

There is no need to support the torsion spring by hand during assembly or repair, making work easier.

The fourth effect is that the helical part of the torsion spring is supported by the shaft cylinder which is removably provided with one bearing, so the torsion spring can be freely supported and released by simply attaching or removing the shaft cylinder from the bearing. 2. There is no need to support the torsion spring by hand during assembly or repair (this makes work easier.

As a fifth effect, in addition to the fourth effect, by providing a reinforcing plate that is provided between the other end of the torsion spring and the lid body and supporting the other end of the torsion spring, the shaft cylinder can be attached from the bearing. The effect is that the torsion spring does not rotate and the workability during assembly is further improved.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an embodiment of the present invention, Fig. 2 is an exploded perspective view of the shaft, Fig. 3 is an assembled perspective view of the shaft, and Figs.
FIG. 6 is a perspective view of main parts showing another embodiment, FIG. 1 is a sectional view showing a conventional rice cooker, FIG. 8 is a perspective view of the shaft, and FIG. 9 is an external view. In the figure, 0 [ is rice cooking 2/non-body, Ctυ is the lid, α
2 is the shaft part + 02a) is the bearing, (+2b) is the shaft cylinder, αη is the torsion spring, (17B) is the spiral part, (
17b) is one end 1 (i7C) is the other end + (" e
) is the bent part, and aS is the reinforcing plate. The same reference numerals in each figure indicate the same or corresponding parts. 3rd interval

Claims (5)

[Claims] (1) A rice cooker main body having an opening on the top surface, a lid provided on the top opening of the rice cooker main body, and a lid provided on one side of the lid that is rotatably supported by the rice cooker main body. a shaft portion, a helical portion provided on the shaft portion, a torsion spring having one end provided on the rice cooker main body side and the other end provided on the inner surface of the lid body; the other end of the torsion spring and the inner surface of the lid body; A rice cooker characterized by having a reinforcing plate provided between the rice cooker and the rice cooker. (2) The rice cooker according to claim 1, wherein the reinforcing plate is provided across the curved inner surface of the lid. (3) The rice cooker according to claim 1, wherein the torsion spring on the lid side is provided with a bent portion, and the reinforcing plate supports the torsion spring on the lid side. (4) a rice cooker main body having an opening on the top surface, a lid provided on the top opening of the rice cooker main body, a bearing provided on one side of the lid, a shaft cylinder detachably provided on the bearing; A rice cooker comprising a torsion spring having a spiral portion supported by the shaft cylinder, and having one end on the rice cooker main body side and the other end on the inner surface of the lid body. (5) The rice cooker according to claim 4, further comprising a reinforcing plate provided between the other end of the torsion spring and the inner surface of the lid and supporting the torsion spring on the lid side. .