JPH0331246Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a valve opening/closing device for a heat-insulating pot.

[Conventional technology and its problems]

If an insulated pot is filled with high-temperature hot water and then tightly fitted with a lid, there is a problem in that the lid becomes difficult to open because the internal pressure decreases as the internal temperature decreases.

This problem occurs not only in ordinary heat-retaining pots, but also when cooking using an insulated pot, for example. Cooking using an insulated pot involves first heating the ingredients together with an appropriate amount of water, or heating the ingredients and water separately, then filling the insulated pot with the pot and keeping it in an insulated state for the required time. It is used for cooking such as cooking rice and boiling.

In order to solve the above problems with insulated pots, it is possible to install a valve on the lid and open the valve before opening the lid, but opening the valve also requires considerable force. At the same time, such work becomes troublesome for the user of the heat insulating pot.

Therefore, the object of this invention is to provide a valve opening/closing device that solves the above problems by interlocking the lid locking device and the valve.

[Means for solving problems]

As a means to solve the above problems, this invention provides an insulating pot having a lid locking device in which a lock lever is provided on the periphery of the lid, and a lock claw that engages with the insulating pot body is rotatably attached to the lock lever. A guide is provided in a part of the lid to engage one end of the valve opening/closing member between the fulcrum of the lock lever and the operating end, and to slide the valve opening/closing member along the top surface of the lid. A stepped portion having a height difference in the sliding direction is provided, and an interlocking mechanism is provided in a part of the valve body to follow changes in the step of the stepped portion that occur as the valve opening/closing member slides.

[Effect]

In the locked state in which the lock lever is tilted toward the top surface of the lid, a part of the interlocking mechanism engages with the lower level of the stepped portion of the valve opening/closing member to maintain the valve in the closed state. When the lock lever is raised, the lock claw is released and the lid is unlocked, and the valve opening/closing member slides toward the outside of the lid, and the contact part of the interlocking mechanism moves upward to follow the movement of the step. As a result of the valve body rising, the valve becomes open.

〔Example〕

The embodiments shown in FIGS. 1 to 3 relate to an insulated pot used for the above-mentioned adiabatic cooking.
This heat-insulating pot consists of a pot body 1 and a heat-insulating lid 2, which are tightly fitted together by a sealing member 3 attached to the outer peripheral surface of the heat-insulating lid 2.

On the upper surface of the lid 2, locking devices 4 are provided at two centrally symmetrical locations.

This locking device 4 is conventionally known and includes:
A lock lever 6 is rotatably mounted by a fulcrum pin 5 provided parallel to the diameter direction of the outer peripheral edge of the lid 2. Further, a lock pawl 7 is attached to the lock lever 6 by its own shaft 8, and the lower end of the lock pawl 7 is engaged with the opening edge of the pot body 1.

The position of the shaft 8 is such that when the lock lever 6 is in the locked state on the top surface of the lid 2, the extension line of the line connecting the engagement point a of the lock pawl 7 and the fulcrum pin 5 (i.e., the thinking point) is on the lid 2 side. When the lock lever 6 is erected, it is set at a position beyond the above-mentioned extension line to the outside of the lid 2.

A mounting pin 9 is provided midway between the fulcrum pin 5 of the lock lever 6 and the operating end of the lock lever 6, and is made to protrude to one side of the lock lever 6.

A valve opening/closing member 10 is slidably placed along one side of the lock lever 6 from which the mounting pin 9 is projected. This member 10 has an elongated hole 11 in the vertical direction at one end thereof, and the mounting pin 9 is loosely fitted into the elongated hole 11. Further, in the middle of this member 10, an inclined stepped portion 12 is formed with a higher rear end portion, and the rear end portion is inserted into a guide groove 13 formed in the lid 2 and is provided in the guide groove 13. The bridge 14 prevents it from coming out upwards.

A recess 15 is formed on the upper surface of the stepped portion 12, and a protrusion 16 is formed on the lower surface of the lower end.

The valve body 17 is a valve seat 19 of a valve hole 18 provided in the lid 2.
The valve hole 18 communicates with a passage 20 provided in the lid 2. A valve shaft 21 that is integral with the valve body 17 passes through the valve hole 18 and projects into the passage 20 . A heat insulating block 22 made of a case filled with a heat insulating material is inserted into the passage 20 with some distance left between it and the surrounding wall, and this is attached to the lower end of the valve shaft 21. A coil spring 23 is interposed between the shoulder portion of the heat insulating block 22 and the upper wall of the passage 20, and the valve body 1 passes through the heat insulating block 22 and the valve shaft 21.
7 is urged to be in close contact with the valve seat 19 at all times.

Further, an annular portion 24 is formed in the upper part of the valve body 17, and the stepped portion 12 is passed through the annular portion 24, so that the inner peripheral surface of the annular portion 24 is engaged with the upper surface of the stepped portion 12.

The valve opening/closing device of the embodiment has the above configuration, and its operation will be explained next.

1 and 2 show the locking state in which the lock claw 7 is engaged with the outer periphery of the opening edge of the pot body 1 and the lock lever 6 is tilted down onto the top surface of the lid 2.

In this state, the valve opening/closing member 10 is in the most retracted position, and the annular portion 24 of the valve body 17 is engaged with the lower part of the stepped portion 12. Therefore, the protrusion 16
touches the upper surface of the valve body 17, pushes the valve body 17 down against the elasticity of the coil spring 23, and brings it into close contact with the valve seat 19.

When the lock lever 6 is raised from the above state, the mounting pin 9 integral with the lock lever 6 moves with a radius of rotation about the fulcrum pin 5, so that the valve opening/closing member 10 slides outward of the lid 2. At this time, the valve opening/closing member 10 is prevented from floating by the bridge 14 of the guide groove 13. When the valve opening/closing member 10 slides, the annular portion 24 of the valve body 17 is lifted by the inclined surface of the stepped portion 12, so that the valve body 17 separates from the valve seat 19 while compressing the coil spring 23, and the valve opening/closing member 10 moves away from the valve seat 19 while compressing the coil spring 23. When the slide reaches its maximum limit, the inner circumferential surface of the annular portion 24 fits into the recess 15 of the stepped portion 12, as shown in FIG. 3, and becomes stable.

When the valve is locked again from this state, the valve opening/closing member 1
0 retreats, the annular portion 24 slides on the inclined surface of the stepped portion 12, and the valve body 17 is lowered by the force of the coil spring 23, thereby closing the valve.

Next, another embodiment shown in FIG. 4 is similar to the above-mentioned embodiment except for a slight difference in the interlocking mechanism between the valve body 17 and the valve opening/closing member 10.

That is, the interlocking mechanism in this case includes a protrusion 25 formed on the upper surface of the valve body 17, a coil spring 26 interposed between the lower surface of the valve body 17 and the upper wall surface of the passage 20, and the valve body 17 directed upward. consisting of a energized configuration.

In the locked state shown in FIG. 4, the coil spring 26 is in a compressed state. At this time, the lifting of the valve opening/closing member 10 is caused by the mounting pin 9 and the elongated hole 1.
1 and the bridge 14 of the guide groove 13.

When the lock is released from this state, the valve opening/closing member 10 slides outward as in the case described above, so the protruding part 25 slides on the lower surface of the stepped part 12 and fits into the recess 27 at a high level, thereby establishing a stable state. Become.

When the valve is locked again, the valve is closed by the reverse operation.

Note that although the above description has been made regarding an insulated pot for adiabatic cooking, the same structure can be applied to a normal heat-retaining pot for the purpose of keeping warm.

〔effect〕

As described above, this invention converts the rotational movement of the lock lever into horizontal movement of the valve opening/closing member by engaging the valve opening/closing member with the lock lever.
Furthermore, by moving the valve body up and down via an interlocking mechanism that follows changes in the level difference of the step portion provided on the member, the opening and closing of the valve body can be linked to the operation of the lock device.

Therefore, the valve body can be automatically opened and closed simply by operating the locking device, which has the effect of simplifying the operation of opening and closing the lid of the heat insulating pot.

[Brief explanation of the drawing]

Fig. 1 is a partially omitted sectional view of the embodiment, Fig. 2 is a partially omitted plan view of the same as the above, Fig. 3 is a sectional view showing the same as the above in an unlocked state, and Fig. 4 is a part of another embodiment. It is an abbreviated sectional view. 1... Pot body, 2... Lid, 4... Lock device, 5... Fulcrum pin, 6... Lock lever, 7...
... Lock claw, 9 ... Mounting pin, 10 ... Valve opening/closing member, 11 ... Long hole, 12 ... Step portion, 13 ... Guide groove, 14 ... Bridge, 17 ... Valve body, 19
... Valve seat, 22 ... Insulation block.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A heat insulating pot having a lid locking device comprising a lock lever provided on the periphery of the lid and a lock claw that engages with the heat insulating pot body rotatably attached to the lock lever, the lock lever as described above. A part of the lid is provided with a guide that engages one end of the valve opening/closing member between the fulcrum and the operating end of the lid, and slides the valve opening/closing member along the top surface of the lid;
The valve opening/closing member is provided with a stepped portion having a height difference in the sliding direction, and a part of the valve body is provided with an interlocking mechanism that follows changes in the step of the stepped portion that occurs as the valve opening/closing member slides. A valve opening/closing device for an insulated pot. (2) Utility model registration claim 1, characterized in that the interlocking mechanism has a structure in which the inner circumferential surface of an annular portion formed on the upper part of the valve body is engaged with the upper surface of the stepped portion of the valve opening/closing member. A valve opening/closing device for an insulated pot described in . (3) The above-mentioned interlocking mechanism has a configuration in which the upper part of the valve body is in contact with the lower surface of the step of the valve opening/closing member, and the valve body is urged upward by an elastic body. The valve opening/closing device for the heat insulating pot according to item 1.