JPH0236816A - Electrical rice boiler - Google Patents

Abstract

PURPOSE:To make it possible to automatically open a lid when a lock release button is pushed and to prevent the lid from abruptly closing even though a human hand touches the lid which has been erroneously opened, by providing a lock mechanism between the lid and an electrical rice boiler body, and a torsion spring to automatically rotate and open the lid by means of its resilient force. CONSTITUTION:When a lock release button 19 is pushed, a latch 22 is rotated so that an engaging part 10 engaged in a hole in the latch 22 is released causing the latch 22 to move. When this latch 22 rotates, a spring C25 pushes up by its resilient force a stopper 24 which therefore secures the latch 22 so as to release the lock. When the lock is released, a torsion spring D28 rotates by its resilient force a lid 2 about a rotary shaft 39. The lid 2 comes to a stop at a position between 90deg. and 95deg. of opening angle. The opening speed of the lid 2 is regulated by a friction brake between a slidable head 35 pushed up by a compression spring E34 and a slide surface 38 so as to eliminate a risk. Further, the resilient force of the compression spring E can be adjusted suitably by an adjusting screw 43, thereby it is possible to open the lid automatically and smoothly.

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. Figure 5 is a fragmented cross-sectional view showing the outline of the configuration of a conventional electric rice cooker. In Figure 1, (1) is a rice cooker (2) is a lid,
3) is a partition plate, (4) is a heat-insulating lid, (5) is an inner pot, (6)
) is an outer pot, (7) is a heater installed between the inner pot (5) and outer pot (6), (8) is a heat shield cylinder, and (9) is a sensor.

(lO) is the support frame ring, (+1) is the outer case,
(12) is the control panel, (1, 3) is the code reel, (14) is the menu key, (15), (
16) is a timer button, (17) is a start button,
(18) is a timer display section, and (19) is a halloquet release button.

The detailed structure of the electric rice cooker is not directly related to this invention, so it will be omitted here, or an eccentrically formed support frame ring (10) is installed on the top surface of the main body, and near the inner periphery. The outer pot (6) and the heat shield tube (8) are fixed, and the outer periphery is continuous with the edge of the outer case (11). A control panel (12) is also provided on the eccentric thick wall portion of the support frame ring (10).

Figure 6 is a diagram for explaining the opening and closing operations of the lid (2) in a conventional electric rice cooker when inserting and removing the inner pot (5) and when serving cooked rice in a bowl. So 2
Press the lock release button (19) with your hand as shown in the figure (Δ) and ! (2) and the main body, and remove the handle (1) from the hinge (20).
Open the lid (2) by pulling it up until it stops. Furthermore, the opened lid (2) balances itself as the lid (2) tries to fall outward and comes to rest at the position shown in Figure 1 (B).

Problems to be Solved by the Invention C] Since the conventional electric rice cooker as described in 1- is configured and operates as described in I- below, there is a problem in that the lid is difficult to open during use. [Immediately, when cooking rice] When serving split rice in a bowl, I hold a rice scoop in my right hand and a bowl in my left, so my hands are full, so I have to open the lid beforehand before serving. must be carried out. In addition, when the lid is open, the lid is only static 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, causing your fingers to get caught. There was a risk of injury.

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, and can be opened accidentally. The purpose is to obtain an electric rice cooker in which the lid does not suddenly close even if the lid is touched.

[Means to solve the problem]

The electric rice cooker according to the present invention automatically rotates the lid by force when the locking mechanism for locking the lid to the main body and the hinge connecting the 1M and the main body are released. The lid is provided with a twisting mechanism for opening the lid, a braking mechanism for braking the rotation of the lid, and an adjusting member for adjusting the elastic force of the braking mechanism.

[Effect]

This invention includes a locking mechanism for locking the lid to the main body, and a twist lever for automatically rotating and opening the lid by elastic force when the hinge connecting the lid and the main body is unlocked. Unfortunately, we decided to include a braking mechanism to brake the rotation of this lid and an adjustment member to adjust the elastic force of the braking mechanism, so by pressing the lock release button, the lid can be automatically opened while applying appropriate braking. The lid can be opened automatically, and even if you accidentally touch an open lid, the lid will not close suddenly.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. 1st
The figure is a sectional view showing the general structure of the entire electric rice cooker according to the present invention, and the electric rice cooker in one embodiment of the present invention includes
The locking mechanism shown on the left side of Figure 1 (the entire mechanism is hooked) and the hinge part (2o) shown on the right side of Figure 1 are different in configuration from conventional electric rice cookers; Since it is similar to a rice cooker, it is omitted in the second drawing.

In Fig. 1, the same reference numerals as in Fig. 5 indicate the same or equivalent parts. (21) is the spring A built into the lock release button (19), (22) is the hook and the support frame ring ( 10) is provided with a hole into which an engaging portion (10a) formed integrally engages. (23) is a spring B for urging the hook (22), (24) is a stopper, (
25) is the spring C, and the stopper (24) is the support frame ring (
10), and is pushed up from below by a spring C (25), and the hook pushes the end of the metal (22) to one side.
The C hook securely fixes the hole provided in the metal (22) and the engaging portion (10a). (26) is a holding plate of the stopper (24), which constitutes a locking mechanism.

Also, (27) is the lid bearing, (28) is the twist spring D,
(29) is reinforcing plate A, (32) is rotating cylinder, (34
) are compression springs E, which allow the hinge part (20)
Fig. 2 is a partially enlarged view showing in detail the structure of the locking mechanism shown in Fig. 1, where the same symbols as in Fig. 1 indicate the same parts, and the broken line (22') indicates the latch (22'). 22) indicates the position to be moved.

FIG. 3 is a perspective view showing the structure of each part assembling the hinge part (2o) shown in FIG. Bafu (28)
The arm part of (28b) is the fixed part of Hifusuhafu (28) (
30) C reinforcing plate B, (3]) is support frame L) 7g (1
0) The anti-rotation hole (33) into which the fixing part (28b) provided in i and m is fitted is a support frame bearing, (35) is a compression spring E, (34) a sliding member provided in l-, (36
) is the support frame ring (
10) Upper cylindrical hole, (38) is a sliding surface provided on the lid bearing (27), (39) is a rotating shaft, and (40) is a cover. (42) is wa/ya, compression spring E (34
) is located below. (43) is the cylindrical hole (
By making the length of the compression spring E (34) inserted in the spring E (38) variable, the elastic force of the compression spring E (34) is changed and the elastic force is adjusted to an appropriate value.

The lid bearing (27) is provided on the inside hinge portion (2o) of the lid (2), and twist springs D (28) are attached to both sides thereof. This hinge lever D (28) is composed of an arm part (28a) that holds the lid (2) with elastic force, and a fixing part (28b) that is inserted into the second rotation stopper hole (31). Cage, arm part (28a) of twist spring D (28)
A reinforcing plate A (29) is attached to the inside of the lid (2) and a reinforcing plate B (30) is attached to the support frame ring (10) to prevent the fixing part (28b) from directly contacting the resin and causing deformation. . The rotating cylinder (32) has a twist spring D (2g)
A support frame bearing (33) is mounted inside the support frame ring (10) and is formed integrally with the support frame ring (10), and a rotating shaft (39) passes through the center of these. Also, compression spring E (3
4) is equipped with a sliding member (35) molded from plastic on its second part, which is inserted into a cylindrical hole (36) formed in the support frame ring (10), and the sliding member (35) is inserted into the cylindrical hole (36) formed in the support frame ring (10) 35)
is in contact with an involute-shaped sliding surface (38) formed on the outer peripheral surface of the lid bearing (27). Also cover (4
0) can be installed after the assembly is completed, resulting in 7 rotation axes (3
9) is prevented from coming off.

Next, the operation will be explained. When rice is cooked in an electric rice cooker configured as described in 1 above and served in a two-pot rice bowl, press the lock release button (19).
As shown in Figure 2, the hook (22) rotates;
The engaging part (]Oa) that was engaged with the hole 22) is disengaged, and the hook (22) moves to the position shown by the broken line (22').

When the hook (22) rotates, the stopper (24) is pushed up by the elastic force of the spring C (25), and the hook fixes the hook (22) at the position indicated by the broken line (22'), and then presses the lock release button. Even if you release your finger from (9), the hook (22) does not return to its original position and the two-way lock is released.

When the lock is released, the lid (2) opens by rotating around the rotating shaft (39) due to the elastic force of the hinge lever D (28), and stops at a position with an opening angle of 90° to 95°.

The opening speed of this M (2) is determined by the compression spring E (34) or the sliding member (35) that pushes up, and the sliding surface (
Brake is applied and adjusted by friction with 38). In other words, if the lid (2) is rotated using the elastic force of the spring D (28), the opening speed of the lid (2) will increase in terms of acceleration, so adjust this to ensure smooth movement. I try to make it possible. Furthermore, since the elastic force of the compression spring E can be appropriately adjusted using the adjustment screw (43), the lid (2) can be opened automatically and smoothly.

Figure 4 is a diagram illustrating the opening (speed adjustment) operation of the lid (2). In Figure 7, (A) is when the lid (2) has started to open, and (a) is the lid bearing at that time. (27) shows the position of the sliding surface (38) and the sliding member (35). B) shows the state when the lid (2) is almost finished opening, and (b) shows the position of the lid bearing (27) at that time. sliding surface (38) and sliding parts (35)
FIG. As shown in the figure, sliding parts (3
5) is the lid bearing (
The rotation of the lid bearing (27) is braked by pushing the sliding surface (38) of the lid (27), but this braking force is applied to the lid (
2) is starting to open, that is, the state shown in Figure 1(a), the lid ( As the lid (2) opens, this distance gradually becomes smaller, and therefore the braking force gradually increases, eliminating the accelerating acceleration of the opening speed of the lid (2) and ensuring smooth opening/closing operation. ing.

If this is shown in terms of the force relationship of each spring, when the lid (2) starts to open, the tension spring D (28) > the compression spring E (3
4), and in the state where 'rM(2) is fully opened, the following relationship holds: Hi-Fu-Suba-FDC28)<Compression Spring E (34). Even if this relationship were to be disrupted due to variations in spring manufacturing, this balance would be maintained because an adjustment screw (43) is provided to vary the length of compression spring No. 1 (34). Even if you accidentally touch the lid (2) while it is open, it will not close suddenly, and when you want to close the lid (2), push the lid (2) with your hand and return it to its original position.
1″81 It will be locked dynamically.

〔Effect of the invention〕

As explained below, this invention allows you to automatically open the lid without applying proper braking by pressing the four release buttons, and even if you accidentally touch the open lid, the lid will open suddenly. This has the effect of preventing it from closing.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing the general structure of the entire electric rice cooker according to an embodiment of the present invention, Fig. 2 is a partially enlarged view of the locking mechanism without showing its detailed structure, and Fig. 3 is a partially enlarged view of the hinge portion. Exploded perspective view showing the configuration, Figure 4 (Δ), (a) (B), (b
) is a diagram explaining the operation for adjusting the opening speed of the lid, 51:121 is a broken cross-sectional view showing the configuration of a conventional electric rice cooker, and Figures 6 (A) and (B) are diagrams of a conventional electric rice cooker. It is a figure for explaining the opening and closing operation of the lid of a container. In the figure, (2) is the lid, (5) is the inner pot, (7) is the heater (10) is the support frame ring, (11) is the outer case,
(19) is a lock release button, (20) is a hinge portion, (28) is a twist spring, (32) is a rotary cylinder, (34) is a braking mechanism, and (43) is an adjustment member. Note that the same reference numerals in each figure indicate the same or corresponding parts. Agent Masu Oiwa k14 (I2) Part ■ Figure Kugu Kugo C-C) 0 Procedural amendment (method) Contents of amendment November 18, 1985 (D)'' is corrected. In the drawings, Figure 4 is corrected as shown in the attached sheet. Above 2, Name of the invention Electric rice cooker 3 Person making the amendment Representative Shinoji 1 Kimoriya 5゜Date of amendment order October 25, 1988 (Shipping port)

Claims (1)

[Claims] A main body that cooks rice by heating an inner pot (5) with a heater (7) provided inside, the outer periphery is continuous with the upper end of the outer case (11) of the main body, and the inner periphery is Nearby is a support frame ring (10) to which the outer pot (6) is fixed.
), a lid (2) that engages with the support frame ring (10) during rice cooking and covers the hole into which the inner pot is inserted; and a lid (2) that locks the lid (2) in the state during rice cooking. )
A locking mechanism is provided on the lid (2), and a lock release button (19) is provided on the lid (2) to release the locking mechanism.
), a hole into which the inner pot is inserted by rotating the lid (2) using the rotating shaft (39) provided on the support frame ring (10) as a fulcrum at a position opposite to the locking mechanism and pushing it upward; A hinge part (20) for opening, and a hinge part (20) provided in the hinge part (20) to rotate the lid (2) with elastic force when the lock mechanism is released by the lock release button (19). Twisted spring (28), the above lid (2)
), a braking mechanism (34) provided to brake the rotational speed of this lid (2) according to the opening angle of the lid (2);
Adjustment member (34) provided to adjust the elastic force of
34).