JPH0265810A - Electric rice boiler - Google Patents

Abstract

PURPOSE:To make it possible to automatically open a lid with a simple operation and not to suddenly make the lid shut even if the open lid is touched by providing both a locking mechanism by which the lid is locked on a main body and torsion springs by which the lid is automatically opened when its lock is released. CONSTITUTION:When rice is served in a bowl after it has been boiled, for example, after a lock-releasing button 19 is pushed, a latch 22 is turned and released from a catching-part 10a catching a hole on the latch 22, and a stopper 24 is pushed up by the elastic force of a spring (C) 25, and then its lock is released since the latch 22 is not returned in place even if the lock-releasing button 19 is detached. After that, a lid 2 is opened revolving around the rotating shaft 39 by the elastic force of torsion springs (D) 28 and stopped in the position of an opening angle of 90 deg. to 95 deg.. Furthermore, the opening speed of the lid 2 is safely adjusted since a brake is applied by the friction between sliding heads 35 pushed up by compression springs (E) 34 and sliding faces 38.

Description

[Detailed description of the invention] [Industrial application field] This invention relates to an electric rice cooker.

[Conventional technology]

As a conventional electric rice cooker, there is one shown in FIG. Fig. 5 is a fragmented cross-sectional view showing the outline of the structure of a conventional electric rice cooker, and +11 in Fig. 1 indicates a handle.

+21 is the lid, (3) is the partition plate, (4) is the insulation lid, (5)
is the inner pot, (6) is the outer pot, and (7) is the inner pot (5) and outer pot 16.
), (8) is a heat shield cylinder, (9)
is the sensor, αQ is the support frame link, αυ is the outer case, 1
3 is the control panel.

(L3 is the code reel, αhiro is the bowl control board, α9 is the menu key, ae is the timer button, αD is the start button.

ae is a timer display section, and CI is a lock release button.

The detailed structure of the electric rice cooker is not directly related to this invention, so it will be omitted here, but an eccentric support frame ring G@ is installed on the top surface of the main body, and an outer pot is located near the inner periphery of the support frame ring G@. (6) and a heat shield cylinder (8) are fixed, and the outer periphery is continuous with the upper end of the outer case συ. Further, a control panel α is provided on the eccentric thick wall portion of the support frame ring α1.

Figure 6 is a diagram for explaining the opening and closing operations of the lid (2) when loading and unloading the inner pot (5) and when serving cooked rice on a tea tray in a conventional electric rice cooker. figure[
Press the lock release button a3 by hand as shown in A).
Release the lock that fixed fE121 and the main body,
Centering on the hinge part ■, pull up the handle 1 until it stops, and open Xl (21).
(2+ is the lid that is about to fall outward (22 balances itself with its own weight and comes to rest at the position shown in Figure 9 (81).

[Problem to be solved by the invention]

Since the conventional electric rice cooker 2: as described above is configured and operates as in 9 or above, there is a problem that the lid is difficult to open when in use. In other words, when serving cooked rice in a bowl, one must hold the rice scoop in the right hand and the bowl in the left, so both hands are occupied, and the lid must be opened first before serving. . Also with the lid open.

The lid only remains stationary due to the balance of gravity, so if you accidentally touch the lid while serving food, the balance will be lost and the lid will slam shut (could cause the lid to close, causing injury to your fingers, etc.) This impact applied impact force to the control board equipped with the microcomputer, causing it to malfunction.

This invention was made to solve this problem, and even if both hands are occupied, the lid can be opened smoothly and automatically by simply pressing the lock release button. The purpose is to obtain an electric rice cooker in which the lid will not suddenly close even if the lid is touched, and the υj control board installed inside the lid will not be affected.

[Means to solve the problem]

The electric rice cooker according to the present invention includes a control board with a built-in microcomputer provided inside the lid, a locking mechanism for locking the lid to the main body, and a hinge section connecting the lid and the main body that is unlocked. The lid is equipped with a twisting spring that automatically rotates and opens the lid using elastic force when the lid is opened.

[For production]

In this invention, a locking mechanism for locking a lid provided inside the control board to the main body.

The hinge connecting the lid and the main body is equipped with a twisting spring that automatically rotates and opens the lid using elastic force when the lock is released.

By pressing the lock release button, the lid can be opened automatically while applying braking, and the lid will not close even if you accidentally touch the open lid.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. 1st
The figure is a cross-sectional view showing the overall structure of the electric rice cooker according to the present invention. Part (2) differs in configuration from the conventional electric rice cooker, and other parts are the same as the conventional electric rice cooker, so they are omitted in Figure 9.

In FIG. 1, the same reference numerals as in FIG. 5 indicate the same or corresponding parts, and c! υ is a spring A built into the lock release button α9, +23 is a latch, and a hole is provided in which the engaging portion (+o6) formed integrally with the support frame ring recess engages. 4 is the spring B for urging the metal @, 241 is the stopper, (c) is the spring C, the stopper Q4 is attached to the support frame ring α, and is pushed up from below by the spring C4, The hook pushes up the end of the newsletter and securely fixes the hole provided in the metal plate and the engaging portion (10a). (
(to) is a holding plate of the stopper (2), which constitutes a locking mechanism.

Also, the cap is the lid bearing, (to) is the twisting spring O, Ca is the reinforcing plate A, (to) is the rotary cylinder, and G4) is the compression spring E, and these constitute the hinge part (2).

FIG. 2 is a partially enlarged view showing in detail the structure of the locking mechanism shown in FIG. 1, where the same reference numerals as in FIG.
The broken line at 3 indicates the position where the money (■) moves.

Fig. 3 is a perspective view showing the structure of each part assembling the hinge part (2) shown in Fig. 1. The same reference numerals as in Fig. 1 indicate the same parts. , (+ab) is the fixed part of the twist spring ■, ω is the reinforcing plate B, and Gυ is the fixed part (
28b) is fitted into the hole for preventing denting, 1 is the support frame bearing shaft, and 2 is the sliding surface provided on the compression spring EGJ.

(to) is the support frame ring α into which the compression spring EC34 is inserted.
[Upper cylindrical hole, 07+ is the drain hole provided in this cylindrical hole (to), (to) is the sliding surface provided on the lid bearing surface, C
33 is a rotating shaft, and the throat is a cover.

The lid bearing surface is provided on the hinge part (20) inside the lid (2).

Twisted springs D@ are attached to both sides.

This twisting spring D@ is composed of 28 arm parts (28) that lift up the lid (2) with elastic force and a fixing part (28b) inserted into the one-turn stopper hole Gυ, and the arm part (28a) of the twisting spring D@ ) and the fixing part (28b) come into direct contact with the resin and do not cause deformation, so there is a reinforcing plate A inside the lid (2).
and a reinforcing plate BCn for the support frame ring α are attached. The rotating cylinder (to) is attached to the inside of the twist spring D@, and a support frame receiving shaft (to) is formed integrally with the support frame ring O (l), and the rotating shaft (to) passes through the center of these. In addition, the compression spring E (foundation) has a sliding surface molded from plastic on its upper part, and is inserted into a cylindrical hole formed on the support frame ring [11]. The sliding surface (■) is in contact with the involute-shaped sliding surface (to) formed on the outer circumferential surface of the lid bearing (2).Furthermore, the cover jaw is attached after assembly, so that one rotation axis (to) ) to prevent omissions.

Next, the operation will be explained. When the rice is cooked in the electric rice cooker configured as described above and is to be served in a bowl, the metal hook rotates as shown in FIG. 2 by pressing the lock release button a9.

The engaging portion (IOa) of the hook that has been engaged with the remaining hole is disengaged, and the hook moves to the position where the remainder is indicated by the broken line Q'. When the hook Q rotates, the stopper (to) is pushed up by the elastic force of the spring C (c), and the remainder of the hook is fixed at the position indicated by the broken line (2)', and the finger is released from the lock release button α9. Even when released, the rest of the hook does not return to its original position.

The lock will be released.

When the lock is released, the lid (2) rotates around the rotation axis (to) and opens from the sixth elastic part of the twist panel O (to).

Stop at the opening angle of 90° to 95°.

The opening speed of the lid (2) is adjusted by applying a brake due to the friction between the sliding surface (9) and the sliding surface (9) pushed up by the compression spring E341 to avoid any danger. That is,
If the lid (2) is rotated using the elastic force of the twisting spring D@, the opening speed of the lid (2) will increase in terms of acceleration.
This is adjusted to ensure smooth movement.

Fig. 4 is a diagram explaining the operation for adjusting the opening speed of this lid (2).
(B) shows the position of the lid (2) and the sliding surface (to).
[b] is a diagram showing the positions of the sliding surface (toward) and the sliding surface (toward) of the lid bearing surface when the lid is almost completely opened.

As shown in the figure, the sliding head presses the sliding surface (to) of the lid holder shaft surface by the elastic force of the compression spring ε (b), and the lid holder shaft
This braking force is applied to the surface of the support frame ring QG and the sliding surface (to) when the lid (2) is starting to open, that is, the state shown in Fig. 2 (8). It is weak because there is an H interval between them, and the lid (2) is opened (this interval gradually becomes smaller, so the braking force gradually becomes stronger, eliminating the acceleration of the opening speed of the lid +21). This allows for quick opening and closing operations.

If this is shown in terms of the force relationship of each spring, when the lid (2) is just starting to open, the twisting spring O is the compression spring EG41,
When the lid (2) is fully opened, it becomes a twisting spring D (mostly) a compression spring E□□□. With the above structure, even if you accidentally touch the open lid (2), it will not close suddenly, and when you close the lid (2), the lid (2) will close.
If you press it with your hand to return it to its original position, it will automatically lock.

A large water draining surface is formed at the bottom of the cylindrical hole (to), and a water catcher (not shown) is installed below this, so even if water enters the cylindrical hole ( Water does not accumulate at the bottom of the tank.

〔Effect of the invention〕

As explained above, this invention allows the lid to be opened automatically by pressing the lock release button.

Furthermore, even if you accidentally touch an open lid, the lid will not suddenly close.

[Brief explanation of the drawing]

Fig. 1 is an electric rice cooker according to the present invention; a cross-sectional view showing the overall general configuration, Fig. 2 is a partially enlarged view showing the detailed structure of the locking mechanism, and Fig. 3 is a perspective view showing the structure of the hinge part. Figure 4 is a diagram explaining the operation for adjusting the opening speed of the lid, Figure 5 is a broken cross-sectional view showing the configuration of a conventional electric rice cooker, and Figure 6 is the opening and closing operation of the lid in a conventional electric rice cooker. Diagram for explaining. (2) is the lid, (5) is the inner pot, (7) is the heater, (8; is the heat shield tube. aO is the support frame ring, (joa) is the engaging part, αυ is the outer case, 041 is the control board , 09 is the lock release button, C!G is the hinge part, &ll is the spring A, ■ is the hook, 1.!31 is the spring B. t24 is the stopper, 4 is the spring C, QB is the press plate, and punishment is the lid Bearing, dew is twist spring D, 03 is rotating cylinder, cm is compression spring E, (to) is cylindrical hole, (to) is sliding head, (to) is sliding surface. ta is rotation axis. Note that in each figure The same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] A main body that cooks rice by heating an inner pot (5) with a heater (7) provided inside the main body, a lid (2) provided on the top surface of the main body and covering a hole into which the inner pot is inserted. , a control board (14) with a built-in microcomputer provided inside the lid, and a support frame ring (10) for locking the lid (2) in the rice cooking state.
), a lock release button (19) provided on the lid (2) to release the lock mechanism, and a lock release button (19) provided on the support frame ring (10) at a position opposite to the lock mechanism. a hinge part (20) for rotating the lid (2) about the rotary shaft (39) and pushing it upward to open a hole for inserting the inner pot; a locking mechanism by the lock release button (19); a twisting spring (28) provided on the hinge portion (20) to rotate the lid (2) with elastic force when the lid (2) is released;
An electric rice cooker characterized by being equipped with.