JPH027913A - Electric rice-cooker - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

Prior Art] As a conventional electric rice cooker, there is one shown in FIG. Figure 5 is a fragmented sectional view showing the outline of the configuration of a conventional electric rice cooker. In the figure, (1) is the handle, (2) is the lid, (
3) is the partition plate, (4) is the heat-insulating lid, <5) is the inner pot, (6)
is the outer pot, (7) is the heater installed between the inner pot (5) and the outer pot (6), (8) is the heat shield cylinder, (9) is the sensor, (1
0) is the support frame ring, (11) is the outer case, (12) is the control panel, (13) is the cord reel, (14)
) is a menu key, (15) and (16) are timer buttons, (17) is a start button, (18) is a timer display section, and (19) 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 (lO) is installed on the top surface of the main body, and an outer ring is installed near the inner circumference of the electric rice cooker. The pot (6) and the heat shield tube (8) are fixed, and the outer periphery is continuous with the upper end of the outer case (11). Further, a control panel (12) is provided on the eccentric thick wall portion of the support frame ring (10).

Figure 6 is a diagram for explaining the opening/closing operation of M (2) in a conventional electric rice cooker when loading and unloading the inner pot (5) and when serving cooked rice in a bowl. (
As shown in A), press the lock release button (19) by hand to release the lock that secures the lid (2) and the main body.
Pull up the handle (1) around the hinge part (20) to the stopping position and open the lid (2). Furthermore, the opened lid (2) is balanced by the weight of M (2) itself, which is about to fall down, and comes to rest at the position shown in Figure (B).

[Problems to be Solved by the Invention] Since the conventional electric rice cooker as described above is configured and operates as described above, there is a problem in that the lid cannot be opened during use. In other words, when cooking rice and serving it in a bowl, you hold the rice scoop in your right hand and the bowl in your left, so both hands are occupied and you have to open the lid beforehand before serving. . In addition, when the lid is open, the lid 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, causing your fingers to get caught and causing injury. There is a risk of In addition, conventional electric rice cookers have a handle built into the lid in order to lift and open the lid, and for this reason, the control panel is placed on the side of the main unit, making the overall operation difficult. Ta.

This invention was made to solve this problem, and is easy to operate, and even when both hands are occupied, the lid can be opened smoothly and automatically by simply pressing the lock release button. The purpose of this invention is to obtain an electric rice cooker whose lid does not suddenly close even if the lid is accidentally touched.

[Means for Solving the Problems] The electric rice cooker according to the present invention includes a locking mechanism for locking the lid to the main body, and a hinge portion connecting the lid and the main body that has an elastic force when the lock is released. It is equipped with a twisting spring to automatically rotate and open the lid, and a braking mechanism to brake the rotation of the lid.

[Operation] In this invention, when the lock R side for locking the lid to the main body and the hinge part connecting the lid and the main body are unlocked, the lid is automatically rotated by elastic force. Since it is equipped with a twisting spring to open the lid and a braking mechanism to brake the rotation of the lid, it is possible to automatically open the lid while applying braking by pressing the lock release button. The control panel can be placed in this area since the lid will not suddenly close even if the lid is open and there is no need for a handle to lift the lid by hand.

[Example] Hereinafter, an example of the present invention will be described 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. 20) is different in configuration from a conventional electric rice cooker, and the pond part is the same as that of a conventional electric rice cooker, so it is omitted in the drawing.

In Fig. 1, the same reference numerals as in Fig. 5 indicate the same or equivalent parts, (21) is the spring A built in the lock release button (19), (22) is the hook, and the support frame ring ( 1
0) is provided with a hole into which the engaging portion (10a) integrally formed engages. (23) is a spring B for biasing the hook (22), (24) is a stopper, 25) is a spring C, and the stopper (24) is attached to the support frame sink (lO), and the bottom The hook is pushed up by a spring C (25), and the hook pushes up the end of the hook (22) and firmly fixes the hole provided in the hook (22) and the engaging part (10a). ing. (26) is a holding plate of the stopper (24), which constitutes a locking mechanism.

In addition, (27) is the opercular shaft bone, (28) is the flexural spring D, and (2
9) is a reinforcing plate A, (32) is a rotary cylinder, and (34) is a compression spring E, which constitute a hinge portion (20).

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 2') indicates the position to which the hook (22) moves.

FIG. 3 is a perspective view showing the structure of each part assembling the hinge part (20) shown in FIG. 1, where the same reference numerals as in FIG. part, (28b) is the fixing part of the twist spring (28), (30
) is a reinforcing plate B, (31) is a rotation prevention hole into which the fixing part (28b) provided on the support frame ring (10) is fitted,
(33) is the support frame bearing shaft, (35) is the compression spring E (34)
The sliding parts (36) installed on the top are compression springs E (34)
cylindrical hole on the support frame ring (1o) into which is inserted, <37
) is a drain hole provided in this cylindrical hole (36), (38
) is a sliding surface provided on the lid shaft bone (27), (39) is a rotating shaft, and (40) is a cover.

The lid shaft (27) is provided on the hinge part (2o) inside the lid (2), and twist springs D (28) are attached to both sides thereof. This twisting spring D (28) is composed of an arm part (28a) that lifts the lid (2) with elastic force, and a fixing part <28b) inserted into a rotation prevention hole <31). In order to prevent the arms (28a) and fixed parts (28b) of 28) from directly contacting the resin and causing deformation, a reinforcing plate A (29>) is installed inside the lid (2), and a reinforcing plate B is installed on the support frame link (10). (30) is attached to the rotary cylinder (32), which is attached to the inside of the twist spring D (28), and a support frame bearing shaft (33) is formed integrally with the support frame link (10). , a rotating shaft (39) passes through the center of these.The compression spring E (34) also has a sliding member (35) molded from plastic on its upper part.
is inserted into a cylindrical hole (36) formed on the support frame ring (10), and the sliding member (35) is an involute-shaped hole formed on the outer peripheral surface of the opercular shaft (27). It is in contact with the sliding surface (38). Further, the cover (40) is attached after the assembly is completed to prevent the rotating shaft (39) from coming off.

Next, the operation will be explained. When rice is cooked and placed in a bowl in the electric rice cooker configured as described above, by pressing the lock release button (19), the hook 22) rotates as shown in Figure 2. And the hook is gold (22)
The engaging part (LOA) that was engaged with the hole of
22) moves to the position shown by the broken line (22°). When the metal (22) rotates, the stopper (24) is pushed up by the elastic force of the spring C (25), and the metal 22 rotates.
) is fixed at the position indicated by the broken line (22'), and even if you release your finger from the lock release button (19), the hook (22) will not return to its original position and will be locked or released.

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

The opening speed of this lid (2) is determined by the sliding member (35) pushed up by the compression spring E (34) and the sliding surface (3
8) The brake is applied and adjusted by friction.

In other words, the elastic force of the twisting spring D (28) holds the lid (
When 2) is rotated, the opening speed of i(2> becomes faster in terms of acceleration, so this is adjusted to ensure smooth movement.

Figure 4 is a diagram explaining the operation for adjusting the opening speed of the lid (2). In the figure, (A) is the state where the lid (2) has begun to open, and (a) is the lid axis bone at that time. The position between the sliding surface 38〉 of (27) and the sliding member (35)) indicates U, and (B
) is the state when the lid (2) is almost finished opening, and (b) is the sliding surface of the lid shaft (27) (3g) and the sliding part (3g) at that time.
5) is a diagram showing the position of . As shown in the figure, the sliding member (35) pushes the sliding surface (38) of the lid receiving shaft (27) by the elastic force of the compression spring E (34), and the sliding member (35) pushes the sliding surface (38) of the lid receiving shaft (27)
However, when the lid (2) is just beginning to open, as shown in Figure (21), this flake brake is applied to the surface blood of the support frame ring (10) and the sliding surface (38).
Because there is an interval of H between the weak<, P? As the lid (2) opens, this gap gradually becomes smaller, and therefore the braking force gradually increases, eliminating the acceleration of the opening speed of the lid (2) and ensuring smooth opening/closing operation. I have to.

If this is shown by the force relationship of each spring, the lid (2) opens 1:;
In other words, twist spring D (28) > compression spring E (
34), and when fi(2> is fully opened, the tension spring D (2g) (compression spring E (34)) becomes.Since the structure is as described above, the open lid (2) may accidentally
), the lid will no longer close suddenly even if you touch it (2).
) To close the lid, press the lid (2) with your hand to return it to its original position, and the lid will close automatically.

Also, in the 4th U'A, (41) indicates the handle, and as mentioned above, the lid (2) can be opened automatically by simply pressing the lock release button (one), so it is similar to a conventional electric rice cooker. Therefore, it is no longer necessary to place the handle (1) on top of the lid (2), and the control panel (12) can be placed in this area.
You can make the operation easier by arranging the

In addition, a drain hole (37) is formed at the bottom of the cylindrical hole (36), and a drain tray (not shown) is installed under this hole, so even if water enters the cylindrical hole during rice cooking, it will not drain. Water does not accumulate at the bottom of the hole (36).

[Effect of the invention 1] As explained below, this invention allows the lid to be opened automatically while applying braking by pressing the lock release button, and even if the lid is touched by mistake, the lid will close suddenly. Moreover, since there is no need for a handle to lift the lid by hand, the control panel can be placed in this area, making the overall operation easier.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing the general structure of the entire electric rice cooker according to the present invention, FIG. 2 is a partially enlarged view showing the detailed structure of the locking mechanism, FIG. 3 is a perspective view showing the structure of the hinge part, and FIG. 4
The figure is a diagram explaining the operation for adjusting the opening speed of the lid, Figure 5 is a broken sectional view showing the configuration of a conventional electric rice cooker, and Figure 6 is a diagram explaining the opening and closing operation of the lid in a conventional electric rice cooker. Illustration for. (1) is the handle, (2) is the lid, (5) is the inner pot, (7)
is the heater, (8) is the heat shield cylinder, (1o) is the support frame ring,
(if)a) is the engagement part, (12) is the control panel, (11) is the outer case, (19) is the lock release button,
(2o) is the hinge part, (21> is the spring A, (22) is the hook, (23) is the spring B, (24) is the stopper, (25) is the
) is the spring (:, (26) is the press plate, (27) is the lid bearing,
(28) is a twist D, (32) is a rotating cylinder, (34)
is a compression spring E, (36) is a cylindrical hole, (35) is a sliding member,
(38) sliding surface, (39) rotating shaft, <41) handle. Note that the same reference numerals in each figure indicate the same or corresponding parts. Fig. 2 1C) ° Support angle, 1 nib

Claims (1)

[Scope of Claims] A main body that cooks rice by heating an inner pot (5) with a heater (7) provided inside the main body, a handle for movement provided on the side surface of an outer case (11) of this main body, the above main body The outer periphery is continuous with the upper end of the outer case (11) of the main body, and the outer pot (6) is provided near the inner periphery.
) and a heat shielding cylinder (8) provided surrounding the outer pot (6) are fixed to a support frame ring (10), which engages with the support frame ring (10) and inserts the inner pot when cooking rice. a control panel placed on the top surface of this lid (2) to control its operation; and the support frame ring (10) for locking the lid (2) in the rice cooking state. a locking mechanism provided on the support frame ring (10) at a position opposite to the locking mechanism, a lock release button (19) provided on the lid (2) to release the locking mechanism; a hinge part (20) for rotating the lid (2) about the rotary shaft (39) and opening a hole for inserting the inner pot; the locking mechanism is released by the lock release button (19); A twist spring (28) provided on the hinge portion (20) to rotate the lid (2) with elastic force when
An electric rice cooker characterized by being equipped with the following.