JPS6041870Y2 - thermal gear - Google Patents

Description

[Detailed description of the invention] This invention relates to a heat-retaining jar that has a heat-retaining function that either only keeps the rice warm or keeps the rice warm after cooking.

In order to keep cooked rice warm, conventionally, for example, referring to FIG. The rice bowl lid 6 is held and pressed downward by an elastic member such as a backing 5 around the circumference of the holding pin 4, and is crimped and sealed.

However, the pressing force acts on the center of the rice bowl lid 6, and the compression force is weakened by the overall elasticity of the thin rice bowl lid 6, and the rice bowl lid 6 and the rice bowl 2 are made of metal. Since it is a contact, the sealing of the rice bowl 2 by the pressure bonding cannot be said to be sufficient.

Therefore, some of the steam that fills the rice bowl 2 and is generated from the rice that is being kept warm flows out from the crimped portion between the rice bowl 2 and the rice bowl lid 6 together with the warm air inside the rice bowl 2. .

These outflows are heat loss due to heat retention, and the outflow of steam damages the moisture balance of rice that has been cooked to an appropriate moisture content over time, causing the rice to gradually become dry from the surface layer. This results in dryness or deterioration of quality, and the taste also deteriorates.

In order to solve this problem, it may be possible to seal the rice bowl 2 with a sealing member such as a backing between the rice bowl lid 3 and the rice bowl lid 6, but the temperature inside the rice bowl 2 may drop slightly while keeping warm. It is undeniable that the steam filling the rice bowl 2 may partially condense on the back surface of the rice bowl lid, etc., and as a result, the pressure inside the rice bowl 2 decreases and the lid 3 and A drawback is that the rice bowl lid 6 is stuck to the rice bowl 2, making it difficult to open them.

The purpose of this invention is to provide a warming jar that can sufficiently seal the rice bowl while keeping it warm, and also allows the lid of the bowl and the lid of the rice bowl to be opened as easily as before.

To explain the embodiment shown in FIGS. 1 to 3, the container body 1 and the container lid 3 have a built-in heat insulating material 7 and an electric heater 8 in a proper position. The rice in the rice bowl 2 is kept warm.

The container lid 3 is pivotally connected to the opening of the container 1 on one side by a shaft 9, and on the other side is secured to the container 1 side locking part 13 in the closed state to maintain the same state. Lock lever 1 held
It has 0.

Pivot connection by the shaft 9 is made at one end of a diametrical handle 14 provided on the upper surface of the container lid 3, and the lock lever 10 is pivotally connected to the other end of the handle 14 by a shaft 15, and is engaged with the lever 10. This is done by actuating the spring 17 which urges the stop portion 13 to engage.

The rice bowl 2 is placed with its outward flange 2a on the shoulder 1a of the bowl body 1, and the rice bowl lid 6 is pressed downward by the backing 5 between it and the back surface of the bowl lid 3, and the rice bowl 2 is It is crimped to the inner side of the mouth rim to close the rice bowl 2.

10a is an engaging part with the locking part 13 of the lock lever 10;
0b is a lock release operation part of the lock lever 10;
The operating portion 10b is made to protrude from the upper surface of the handle 14.

An annular backing 18 is provided on the back surface of the container lid 3 in contact with the rice bowl 2 side to seal the space between the rice bowl 2 and the lid 3, and the backing 18 can be opened by unlocking the lock lever 10. A portion is deformed or pulled away from the rice bowl 2 side to break the seal.

The backing 18 is fitted into the groove 20 formed on the lower surface of the back plate 19 of the container M3, and is attached with screws 22 with the upper end inward flange 18a sandwiched between the holding plate 21 and the back plate 19. It has an annular thick-walled solid portion 18b that protrudes to the back surface of the back plate 19 to press against the top surface of the flange 2a of the rice bowl 2 to perform the sealing, and the lock lever of the solid portion 18b
The portion facing the operating portion 10b is formed with an upwardly directed recess 18c and a thin walled portion 18d that protrudes downward with approximately half the width of the recess 18c and is easily bent inward on the lower surface of the recess 18c.
is a push protrusion 10c whose lower end is located in the recess 18c and faces above the outer peripheral side of the thin walled part 18d, and whose upper end faces into the handle 14 and is protruded from the lower surface of the lock lever 10 on the operation part 10b side. The intermediary bar 23 facing the holder is held movable up and down, and a spring 24 is used to provide upward movement.

With the above configuration, when the container lid 3 is closed, the lock lever
The engaging portion 10a of 10 engages with the container locking portion 13 to lock the container lid 3 in a closed state, and the annular backing 18 has an annular continuous solid portion 18b and a thin portion thereof. The portion 18d comes into pressure contact with the upper surface of the flange 2a of the rice bowl 2, and seals the space between the rice bowl 2 and the bowl lid 3 regardless of the presence or absence of the rice bowl lid 6.

Therefore, even if the steam or warm air inside the rice bowl 2 escapes from between the rice bowl 2 and the rice bowl lid 6, it is limited to the area that is sealed by the backing 18 on the back of the rice bowl lid 3, and the heat retention ability is reduced. This prevents the rice from becoming dry and dry.

If the temperature drops or the steam condenses while keeping warm, the rice bowl 2
Even if the internal pressure of the sealed space between the container lid 3 decreases and the rice container 2 and the container lid 3 are adsorbed through the backing 18,
In order to open the container lid 3, the operating part 10 of the lock lever 10 is pressed.
When b is pressed inward, the lock lever 10 is rotated clockwise in FIG. 1, and the retaining part lea is removed from the container locking part 13 to release the lock and the container lid 3 can be opened. At the same time, the lock lever pushing protrusion 10c pushes down the intermediate bar 23 against the spring 24, and the lower end of the intermediate lever 23 moves from the bottom of the recess 18c to the inside of the net 18.
By pressing down on the upper outer circumferential side of d, the inside of the net 18
d is bent inward from the state shown in FIGS. 1 and 2 to the state shown in FIG. and release the seal between the vessel lid 3.

Therefore, even if the container lid 3 and the rice bowl 2 are in the suction state, if the lock lever 10 is operated to release the lock, the lock will be released and the sealed suction state will be released at the same time, and the container lid 3 will be unlocked. Immediately upon operation, it can be opened easily like the conventional type without the sealing means.

The rice bowl lid 6 is not in a closed state where it sticks to the rice bowl 2, but is opened by easily following the opening of the bowl body lid 3 via the hanging pin 4.

The backing 18 is inside the network 1 when the lock is released.
8d is bent, in order to be able to reliably restore its shape, a mounting piece 18f is also formed on the outer periphery of the mouth edge of the recess 18c forming the inside 18d of the net, and the mounting piece 18f is attached to another presser piece 2.
5 and is fixed to the back plate 19 of the container lid 3 by screws 26.

Further, the upper bottom surface of the recess 18c is provided opposite to the outer circumferential side of the upper end of the inner mesh 18d, and the pressure by the lower end of the intermediary bar 23 is applied to the inner mesh 18.
A passive slope 18g is formed to cause the inside 18d of the net to bend inwardly against the intermediate bar 2.
The lower end of 3 is also connected to the pushing slope 2 in the same direction as the passive slope 18g.
It is set as 3a.

Reference numeral 23b is a piece of spring receiver that receives the spring 24 of the intermediate bar 23, and the spring 24 is a piece that acts between this spring receiver piece 23b and the back plate 19 of the container lid 3.

FIG. 4 shows that a notch 18h is formed at the corner of the outer peripheral side of the lower end of the inner mesh 18d. When the inner mesh 18d is bent inward as shown by the imaginary line when the waist lock is released, the upper surface of the flange 2a of the rice bowl 2 is formed. On the other hand, even if the inside of the net 18d does not separate, the sealing is reliably broken by the cut 18h.

Note that the lower end surface 18i of the inside of the net 18d is connected to the flange 2.
It is pressed by the container lid 3 to be crimped to the top surface, and its posture is stable, and it is not pulled into the posture of the imaginary line by the negative pressure during sealing, and there is no inconvenience such as the seal being released without the lock release operation. do not have.

In each of the embodiments shown in FIGS. 1 and 4, the intermediary bar 23 may be formed integrally with the lock lever 10, and the structure for pressing against the inside of the net 18d during the lock release operation is arbitrary.

The embodiment shown in FIG.
8b has a recess 18C that opens upward, and the recess 1
8c, the backing 1 between the rice bowl 2 and the lid 3
Communication holes 30 and 31 are formed to communicate the inside and outside of the sealed space according to No. 3, and the lower end portion of the vessel M3 is inserted into the recess 18c so as to be able to move up and down, and when moving downward, the communication holes 30 and 31 are communicated with each other, and when moving upward. At the time, the shutter plate 32 is held so as to be able to move up and down, and the shutter plate 32 is moved upwardly by a spring 33 acting between the spring receiving piece 32a and the back plate 19 of the container lid 3. The operation part 10b of the lock lever 10 can be adjusted by making the upper end face into the handle 14.
This is opposed to the push protrusion 10c formed on the lower side surface.

As a result, when the unlocking operation is performed, the shutter plate 32 is moved downward to make the communicating holes 30 and 31 communicate with each other, and the seal is released. Although the opening/closing mechanism using the shutter plate 32 may be modified in various ways, although the opening/closing mechanism by the shutter plate 32 has a communicating hole 32b that coincides and communicates them.

In the embodiment shown in FIG. 6, a mesh interior 18d formed in a part of the backing 18 is inserted into a pin 40.
and the engaging part 10a side of the lock lever 10 are connected via an intermediary bar 23, one end of which is connected to the lock lever 10 with a screw 41, and the other end connected to the hook part 23b. The connection is performed by securing the tip of the pin 40 to the connecting hole 40a of the pin 40.

As a result, when the unlock operation is performed, the network internal 18
d is bent outward as shown by the imaginary line and pulled away from the upper surface of the flange 2a of the rice bowl 2, thereby breaking the seal.

In this case as well, there is a communication notch 18h at the lower end of the inside of the net 18d.
If this is done, the seal will be released more reliably.

In addition, the figure shows the case of a rice-cooking and warming jar that also has a rice-cooking function, and a portion of the lid 3 and lid 6 of the rice cooker emits an appropriate amount of steam that rises during rice cooking. A pressure regulating means 42 is provided to regulate the internal pressure and moisture content of the rice.In the middle of the steam release passage 43 of the means 42, the passage 43 is opened with high steam pressure during rice cooking, and the passage 43 is opened when keeping rice warm. Valve 4 that closes 43
4, the sealing between the rice bowl 2 and the lid 3 by the backing 18 is not impaired in the heat-retaining state after rice cooking.

In the embodiment shown in FIG. 7, a part of the solid part of the backing 18 has a W-shaped cross section 18j that is open upward, and downward protrusions 1Bk and 181 on both sides of the W-shaped section 18j are formed on a part of the solid part of the backing 18. The upper end of the passive bar 50 inserted and connected to the central upward protrusion 18m is crimped onto the upper surface of the flange 2a to exhibit the sealing function, and the upper end of the passive bar 50 is vertically movably exposed inside the handle 14, and the shaft 51 is inserted into the handle 14. 53 connects the operating end of the bell crank type mediating lever 52 and the upper end of the passive bar 50, which are pivotally connected to each other.
Then, the passive end 52a of the intermediary lever 52 is connected to the lock lever 10.
The push protrusion 10c is opposed to the push protrusion 10c.

In this case, when the lock release operation is performed, the intermediate lever 5
2 rotates clockwise around the shaft 51 with its passive end 52a pushed by the pushing projection 10c, and pulls up the upward projection 18m of the backing 18 via the passive bar 50, and then 181 is pulled away from the upper surface of the flange 2a of the rice bowl 2 by the protrusion 18 to break the seal.

8 and 9 show a downward protrusion 18 with a W-shaped cross section 18j formed on a part of the backing 18, a notch 18h formed at the inner corner of the lower end of 181, and an upward protrusion 18m. When pressed downward by the movement of the intermediary bar 23 that is moved down by the unlocking operation, the ninth
As shown in the figure, it is pushed outward and the seal is released by communication through the notch 18h.

In FIG. 10, a backing 60 is provided on the outer periphery of the rice bowl lid 6 to be press-fitted to the upper surface of the flange 2a of the rice bowl 2, and the backing 18 is
The device is crimped onto the backing 60 as shown by the solid line or the upper surface of the outer periphery of the rice bowl lid 6 as shown in the imaginary line to seal the space between the rice bowl 2 and the lid 6, and the seal cannot be released. This is done in the same way as in FIG.

In addition, between the rice bowl lid 6 and the rice bowl 2, the backing 60
In order to prevent adsorption due to sealing caused by the backing 18.
A gap or a small hole is provided in the sealed space between the rice bowl 2 and the lid 3 of the rice bowl 60 to allow the front and back sides of the rice bowl lid 6 to communicate with each other.

According to this invention, an annular backing is provided on the back side of the lid, which contacts the rice bowl and seals the space between the rice bowl and the lid when the lid is closed. Not only does the heat retention ability decrease because hot air and warm air do not flow out of the sealed space, but also the rice becomes dry due to the steam leaking out, impairing the moisture balance and becoming dry. This solves the problem and allows rice to be kept delicious and warm for a long time without deterioration.

Moreover, the backing is deformed or pulled away from the rice bowl side to release the seal when the lid is unlocked from the container body in order to open the lid. Even if the internal pressure decreases and the lid of the container is adsorbed to the rice bowl side, this adsorption is released by releasing the seal, and the lid of the container does not have a conventional sealing structure at the same time as the unlocking operation. It exhibits the same easy-to-open feature.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of the upper half of the thermal jar showing one embodiment;
Fig. 2 is an enlarged sectional view of the main part, Fig. 3 is an enlarged sectional view of the main part showing the unsealed state, Fig. 4 is an enlarged sectional view of the main part showing a modified example, and Figs. FIG. 8 is an enlarged sectional view of the main part showing another embodiment; FIG. 9 is an enlarged sectional view of the main part showing the unsealed state;
FIG. 0 is an enlarged sectional view of a main part showing still another embodiment. 1... Body, 1a... Shoulder, 2...
...Rice bowl, 2a...Flange, 3...
・Vessel lid, 4... Hanging pin, 6... Rice bowl lid, 9... Shaft, 10... Lock lever-10a... ...Engagement part, 10b...Operation part, 10C...Pushing protrusion, 13...Locking part, 14...Handle, 18... ...Annular backing, 18b...Annular thick-walled solid part, 18c
...Concavity, 18d...Inside the mesh, 18h
... Cut, 18j ... W-shaped section, 18, 181 ... Downward protrusion, 18 m ...
...Upward protrusion, 23...Intermediate bar 24...
... Spring, 30, 31 ... Communication hole, 32.
...Shutter plate, 32b...Communication hole,
33...Spring, 40...Pin, 50...
... Passive bar, 51 ... Axis, 52 ...
...Mediation lever, 53...Connection, 60...
···backing.

Claims (8)

[Scope of utility model registration request] (1) A lock that is pivotally attached to the opening side of the vessel so that it can be opened and closed, and that is held in the closed state by being secured to a part of the vessel in a closed state on the other side opposite to the pivoting part. An annular backing is provided on the back surface of the container lid provided with the member, and the annular backing contacts the rice bowl side when the lid is closed to seal the space between the rice bowl and the lid. A heat-retaining jar characterized in that the seal is released by a lock release operation when opening the lid. (2) The annular backing releases the seal by being partially deformed by being pressed directly or indirectly by the unlocking operation of the locking member. Claim 1 of the Utility Model Registration Claim Thermal jar. (3) The member that presses a part of the annular backing is an operating rod that is integrally provided with a part of the lock member or is pushed by a part of the lock member. Thermal insulation jar described in item 2. (4) The annular backing has a communication hole that communicates the inside and outside of the space between the rice bowl and the lid of the container, and the communication hole is opened by unlocking the lock member. The heat-retaining jar according to item 1. (5) The heat-retaining jar according to claim 4, wherein the communication hole is opened and closed by a shutter plate operated directly or indirectly by a locking member. (6) The heat-retaining jar according to claim 1, wherein the annular backing releases the seal when a portion of the annular backing is separated from the rice bowl side by an unlocking operation of the locking member. (7) The heat-retaining jar according to claim 6, wherein a part of the annular backing that is connected to the locking member via the intermediary member can be separated from the rice bowl side. (8) A part of the annular backing is a lock lever.
The heat-retaining jar according to claim 6, which is connected to a lever rotated by a release operation via an intermediary member and is separated from the rice bowl.