JPS62233117A - Lid body of electric pot - 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 Field of Industrial Application The present invention relates to a lid for an electric water heater with an air set that keeps the stored liquid warm after it has been heated. There has been a rapid increase in demand for boiling type electric water heaters, and there is a demand for a simplified lid structure that allows the steam generated during boiling to be released outside without passing through the bellows. Since the opening/closing mechanism of the bellows is complicated, there has been a strong desire to simplify the mechanism for preventing the lifting and lowering movement of the pushing body that suppresses the bellows.

Conventionally, the lid of an electric water heater that does not boil water has a bottom plate with a built-in bellows, as shown in, for example, Japanese Utility Model Application Publication No. 60-27829. A cylindrical body is provided upright, and a second cylindrical body is provided vertically on the lower surface of the pushing body that presses the bellows.
A vertical guide groove is provided on either one of the cylindrical bodies, and a vertical lip that engages with the guide groove is provided on the other side, and when the vertical lip and the guide groove match, the pushing body can move up and down,
When the position shifts, the pushing body is prevented from descending.

Problems to be Solved by the Invention In a boiling type electric water heater, when the steam generated in the container is discharged to the outside through the steam passage without passing through the bellows, the steam passage is It is necessary to switch the steam passage, but in the conventional configuration as described above, a cylinder body is provided in the center of the pusher body and the bottom plate so as to face the inside of the bellows, so a mechanism for switching the steam passage is provided. The problem was that it was extremely difficult to create a system, resulting in a complicated configuration.

An object of the present invention is to provide a lid for an electric water heater that solves these problems.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a lid body with a built-in bellows, an inner cylindrical part provided to hang down from the top of the lid body, and a cylindrical part inside the inner cylinder. It has a pushing body that can be raised and lowered freely and presses the bellows, and the reciprocating rotation of the pushing body causes a selective movement between the inner cylindrical portion and the pushing body. A blocking mechanism is provided on the upper surface of the bellows and the pushing body to prevent the pushing body from moving up and down, and a rotation regulating mechanism is provided on the upper surface of the bellows and the pushing body to restrict rotational movement of the pushing body when the pushing body moves up and down. According to the above configuration, the mechanism for selectively blocking the lifting and lowering movements of the pushing body and the rotation regulating mechanism of the pushing body are provided only by the inner cylindrical portion of the upper part of the lid body, the upper surface of the bellows, and the pushing body. Therefore, the configuration is very simple, and highly reliable and reliable operation is possible. In addition, since there is no structure inside the bellows, even when applied to boiling type electric water heaters, the opening/closing mechanism of the steam passage that allows steam to escape is almost not subject to shape restrictions, and the inside of the bellows is not subject to any shape restrictions. It becomes possible to set it up freely.

Embodiment Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings. In Figures 1 to 6, 1 is a cylindrical container with a bottom;
A heater 2 is attached to the bottom of the container 1 to boil the liquid contained therein and then keep it at a constant temperature, and the container 1 is housed within a main body 3 with a constant space. Reference numeral 4 denotes a lid body pivotally supported on the upper end opening of the container 2 so as to be freely openable and closable. A blocking mechanism (described later) that selectively prevents the pushing body 6 from moving up and down due to its movement, and a rotation regulating mechanism (described later) that restricts the rotational movement of the pushing body 6 itself when the pushing body 6 moves up and down. ), a steam passage 8 having an inflow lower communicating with the container 1 at one end and facing the outside of the lid body 4 at the other end; It has a built-in opening/closing mechanism (described later) that opens and closes the passage 8.

The pusher body 6 is rotatably and freely movable up and down in an inner cylinder part 9 provided to hang from the upper part of the lid body 4, and protrudes outward from the lower part of the circumferential side wall 1o. A plurality of outer flanges 11 are provided, a plurality of engagement claws 12 are provided at the lower end, and a plurality of lips 13 are provided in the vertical direction on the inner surface of the circumferential wall 1o. Further, a plurality of protruding pawls 14 are provided at the lower end of the inner cylindrical portion 9 of the lid body 4, and a plurality of fitting pawls 15 are provided on the outer peripheral portion of the inner cylindrical portion 9 so as to protrude outward. 16 is a stopper, and this stopper 16 is provided with a plurality of inner flanges 17 at the lower part of the cylindrical wall, and the inner flanges 17
A plurality of inclined pieces 19 each having a sloped portion are provided at the lower end of the cylindrical wall, and a plurality of fitting holes 20 are provided in the cylindrical wall. By being fitted, the stopper 16 is attached and fixed to the lid body 4.

Furthermore, a plurality of substantially inverted-shaped grooves 21 are formed by the inner cylindrical portion e of the lid body 4, the protruding pawls 14 provided on the inner cylindrical portion 9, and the inner flange 17 of the stopper 16. And this @2
1 and the outer flange 11 of the pushing body 6 constitute a blocking mechanism.

The open lower end portion of the bellows 5 is covered with a lid cover 22 that covers the lower surface of the lid body 4, and the open upper end portion is covered with a top plate 23, and these are each welded in an airtight state by ultrasonic welding or the like. . The upper plate 23 is always urged upward by a first coil spring 24, and its central portion protrudes so as to face inside the pushing body 6. Furthermore, a hole 26 is formed in this central portion, and a hole 26 is formed in the bracket hole 26. A check valve 27 with a seal packing 26 attached thereto is mounted so as to be able to rise and fall freely, and this check valve 27
The upper surface of is in contact with the pushing body 6, and the second coil spring 28
and is biased upward by the first coil spring 24. Further, the protruding portion 29 at the center of the upper plate 23 is formed with an abutting portion 30f corresponding to the rotational movement range of the lip 13 of the pusher 6, and a relief portion 31 having a relief portion 31 below the hole 25 at the center. , an inner cylinder 33 is formed which is notched at a plurality of places and has an inner circumferential wall 32 inside the lower end. Furthermore, on the bottom surface 34,
A plurality of recesses 36 are formed, and the recesses 36 and the engaging pawl 12 of the pusher 6 constitute a rotation restriction mechanism. Only when the lifting movement prevention mechanism of the pushing body e is released and the pushing body e moves up and down, the engaging claw 12 of the pushing body 6 engages with the recess 35, and the rotation of the pushing body 6 is restricted only during the lifting operation. The upper plate 23 is positionally regulated and is fixed to the lid cover 22 via the bellows 6 by welding or the like.

The steam passage 8 includes a first steam passage 37 whose one end faces the steam port 36 of the lid 4 and a second steam passage 38 whose one end communicates with the inside of the container 1, each of which is attached to the lid cover 22 by a gasket 39.
．． The first steam passage 37 is sandwiched between the lid body 4 and the lid cover 22, and the second steam passage 38 is sandwiched between the lid body 4 and the lid cover 22.
It is inserted into 2 and fixed with screws. Also the first
A ball 41 is built in the steam passage 37, and a seal hole 42 is formed which is opened and closed by the ball 41.
In addition, the inflow lower at the lowest end of the second steam passage 38 has a first
A lid gasket 43 is attached thereto, and a through hole 44 and an air port (not shown) are formed above the inflow lower.

The opening/closing mechanism for opening and closing the steam passage 8 is composed of a valve body 46 equipped with a second lid gasket 46 and an elevating shaft 47.
are inserted from below the lid cover 22, and furthermore, they are connected by a connecting claw 48 so that they can be raised and lowered freely, and the valve body 46 is biased downwardly by the second coil spring 28. has a cylindrical portion below the center, and first and second seal portions 49 are provided at the lower ends of the cylinder.
．． 50 is formed.

The operation of the above configuration will be explained next.

When injecting liquid, the pusher 6 is rotated until the rib 13 touches the abutment part 3o of the relief part 31 of the upper plate 23.

At this time, the outer flange 11 of the pusher body 6 comes off from the inner flange 17 of the stopper 160, allowing the pusher to move up and down. When the pushing body 6 is pressed in this state, the reverse valve 27 is lowered and the seal gasket 26 is pressed against the upper plate 23 because the second coil spring 28 is set to have a weaker load than the first coil spring 24. hole 2
At the same time, the engaging claw 12 of the pushing body 6 engages with the recess 35 of the upper plate 23 to restrict rotation of the pushing body 6. When the pusher 6 is further pressed, the upper plate 23
is pushed down, and the lifting shaft 47 and the valve body 46, which are urged downward by the second coil spring 28, begin to descend, and the tip seal portion 49,50 of the valve body 46 and the first lid gasket 4 are pressed down.
3, and the sealing surface 51 of the second steam passage 38 and the second lid gasket 46 are sealed almost simultaneously to close the steam passage 8. By further pressing the pusher 6, the air inside the bellows 5 passes through the pressure feed port 52 of the lid cover 22 and passes through the second
The liquid in the container 1 is forced into the container 1 through an air port (not shown) of the steam passage 38, and the liquid in the container 1 is caused to flow out from the discharge port 64 through the water conduit 63.

Next, when the pressing operation of the pushing body 6 is stopped and the pushing body 6 is raised, the upper plate 23 is raised by the reaction force of the first coil spring 24, and the bellows 5 is also extended. Next, the inner wall 32 of the inner cylinder 33 of the upper plate 23
The valve body 46 that had been in contact with the steam passage 8 and closed the steam passage 8 rises to open the steam passage 8, and as the pusher body 6 further rises, the upper surface of the second lid gasket 46 comes into contact with the lid cover 22. At the same time as the pressure feeding port 62 is closed, the valve body 46, the lifting shaft 47, and the upper plate 23 stop rising. When the pusher 6 further rises, the seal gasket 26 of the check valve 27 and the upper plate 2
The airtight seal with the hole 26 of No. 3 is released, and the pusher body 6 returns to its original position.

During this operation, the outer flange 11 of the pusher 6 separates from the stopper 16, but during this time the engaging claw 12 of the pusher 6 engages with the recess 36 of the upper plate 23, restricting the rotation of the pusher 6. Therefore, even if the pressing operation of the pusher 6 is stopped, the pusher 6 rises due to the reaction force of the spring, and the stopper 1
The inclined surface 18 of the inclined piece 19 of 6 acts on the outer flange 11 of the pusher 6 to ensure that the inner flange 1 of the stopper 160 returns to its original position, ensuring reliable and reliable operation. be able to.

On the other hand, when not injecting liquid, by rotating the pushing body 6 in the opposite direction, the outer flange 11 of the pushing body 6 is moved to the stopper 16.
Since the pushing body 6 is located on the inner flange 17, the downward movement of the pushing body 6 is prevented. As a result, the bellows S is no longer compressed, so that no liquid is injected.

In the above embodiment, the groove 21 for raising and lowering the pushing body 6 was formed by the inner cylinder part 9 of the lid body 4 and the stopper 16 due to the complexity of the molding die. The same effect can be obtained even if only the portion 9 is formed.

Further, in the above embodiment, the rotation of the pushing body 6 is restricted by the contact portion 30 between the rib 13 of the pushing body 6 and the relief portion 31 of the upper plate 23, and the engagement claw 12 of the pushing body 6 and the upper Although the explanation has been made regarding the implementation in both the recesses 36 of the plate 23, as shown in FIG. , when the check valve 2 is in contact with the hole 26 of the upper plate 23 to maintain an airtight state, the lower end of the rib 13 of the pusher 6 touches the stepped portion 67.
The same effect can be obtained even if the rotation of the pushing body 6 is restricted by engaging with the pushing body 6.

Further, a plurality of inclined pieces 58 are provided on the other side of the part of the stopper 16 where the inner flange 17 is not provided, so that only the engagement claw 12 of the pusher 6 and the recess 36 of the upper plate 23 are used to move the pusher 6 up and down. A similar effect can be obtained even if the rotation is restricted.

Effects of the Invention As is clear from the above embodiments, according to the present invention, there is a lid body with a built-in bellows, an inner cylindrical part provided to hang down from the upper part of the lid body, and a cylindrical part that can be raised and lowered into the inner cylindrical part. and a pushing body that presses the bellows, and a blocking mechanism is provided between the inner cylinder portion and the pushing body to selectively prevent the lifting and lowering movement of the pushing body by reciprocating rotational movement of the pushing body. , the upper surface of the bellows and the pushing body are provided with a rotation regulating mechanism that restricts the rotational movement of the pushing body when the pushing body moves up and down, so that the lifting movement of the pushing body is selectively inhibited. The mechanism for restricting the rotation of the pushing body and the rotation regulating mechanism for the pushing body can be constructed of only the inner cylinder part of the upper part of the lid body, the upper surface of the bellows, and the pushing body. Therefore, the structure is very simple and has high reliability. Highly reliable operation is possible. Moreover, since there is no structure inside the bellows, even when applied to a boiling type electric water heater as explained in the example, the opening/closing mechanism of the steam passage for releasing steam is also subject to most shape restrictions. It can be freely provided inside the bellows without any need for a bellows.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of the lid of an electric water heater showing an embodiment of the present invention, and FIG. 2 is a sectional view of the main parts of the lid of the water heater.
Figure 3 is a cutaway side view showing the overall configuration of the water heater;
The figure is a cross-sectional view of the main part showing the state when the prevention of the raising and lowering movement of the push body of the same water heater is released, and Figure 6 is the main part showing the state immediately before the return of the push body is completed when the lid of the water heater is raised and lowered. A cross-sectional view, FIG. 6 is a perspective view of the pushing body of the water heater seen from below, and FIG. 7 is a perspective view of the upper plate showing another embodiment. 4... Lid body, 6... Bellows, 6...
... Push body, 9 ... Inner cylinder part, 11 ...
...Outer flange, 12...Engagement claw, 16...
Stopper, 17... Inner tsuba % 23° peak, upper plate, 35... Concavity. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure 3 Figure 9- Inner cylinder part 11--Outer guard 12-1-I mist (Ishito\4 Figure 5

Claims (1)

[Claims] It has a lid body with a built-in bellows, an inner cylindrical part provided to hang down from the upper part of the lid body, and a push body installed in the inner cylindrical part so as to be able to rise and fall freely and press the bellows, A blocking mechanism is provided between the inner cylindrical portion and the pushing body to selectively prevent the lifting and lowering movement of the pushing body by the reciprocating rotational movement of the pushing body, and a blocking mechanism is provided between the upper surface of the bellows and the pushing body to prevent the lifting and lowering of the pushing body. A lid for an electric water heater, characterized in that it is provided with a rotation regulating mechanism that restricts the rotation of a pusher during operation.