JPH036259Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a lid device for an electric water heater equipped with a bellows that extracts liquid in a container using air pressure.

Conventional technology In conventional electric water heaters of this type, the operating part of the push plate that compresses the bellows installed inside the lid was generally circular, but in recent years, consumer needs have diversified. Along with this, as the shape of the main body of the device becomes more square, it has become necessary to make the operation parts of the lid body and the push plate more square. Therefore,
For example, as shown in Japanese Utility Model Application Laid-Open No. 59-141944, a structure as shown in FIGS. 4 to 7 has been proposed.

That is, a locking member 24 having a square frame shape in which a locking part 21 is provided at the lower part of a substantially rectangular push plate 20 and a lever 23 projecting to the outside of the lid body 22 is slid in the horizontal direction. By locking the pawl 25 and the locking portion 21, the push plate 20
is locked to prevent the pressing operation of the push plate 20 from being performed.

Problems to be Solved by the Invention However, in the conventional configuration described above, the lock member 24 has a square frame shape, so the strength of the lock member 24 is weak and the installation configuration within the lid body 22 is complicated. Therefore, as a matter of course, it is very difficult to assemble, and as a result, it takes time to assemble, which increases the cost, and also causes the lock member 24 to slide poorly, causing the lock member 24 to slide when the lever 23 is operated. If the push plate 20 is accidentally pushed due to the locking member 24 not being properly locked, hot water may be discharged outside the vessel, which may cause serious problems in terms of operation and safety. Ta. Further, since the locking member 24 is configured to slide horizontally, a space is required for the movement of the locking member 24, which poses a design problem.

This invention solves these problems,
It is an object of the present invention to provide a lid device for an electric water heater that allows a lock member to slide smoothly and has high operability and safety.

Means for Solving the Problems In order to solve the above problems, the present invention has a bellows inside the approximately rectangular lid body that extracts the liquid in the container by pumping air into the container built into the main body of the water heater. The lid is equipped with an inner cylinder in which a push plate having a substantially rectangular operating part for compressing the bellows is inserted vertically, and the lower part of the inner cylinder is provided with the lid. A circular locking member having a lever projecting to the outside and locking the push plate by movement of the lever is rotatably and slidably provided.

Function According to this configuration, since the lock member is circular and rotates and slides, the lever can be moved smoothly, resulting in extremely high operability and safety. Since no extra space is required for movement, the shape of the lid body can be made smaller, and its configuration can be simplified, resulting in easy design and low cost. What you get is what you get.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the accompanying drawings. In FIGS. 1 to 3, reference numeral 1 denotes a prismatic water heater body, and a bottomed cylindrical container 2 is housed inside the water heater body 1. As shown in FIGS.

3 is a spout fixed to the top of the water heater body 1;
Reference numeral 4 designates a prismatic lid provided on the top of the spout 3. This lid 4 has a substantially square-shaped inner cylinder 4a that extends downward from the inner circumferential edge of the upper surface. An inner flange 4b that protrudes inward is formed at the lower end.

Reference numeral 5 denotes a push plate that is housed in the inner cylinder 4a and is movable up and down.
A cylindrical peripheral wall part 5b vertically provided on the lower surface of the operating part 5a, and a plurality of protruding ribs 5c formed to protrude in the vertical direction on the upper part of the outer peripheral surface of the peripheral wall part 5b.
A plurality of protruding pieces 5d are located between the protruding ribs 5c and protrude from the lower part of the outer peripheral surface of the peripheral wall portion 5b.
It is equipped with

6 is a lock member that regulates the lifting and lowering of the push plate 5;
This locking member 6 is formed with a notch 6a for allowing the plurality of protruding pieces 5d to escape during assembly, and a groove 6b for allowing the protruding rib 5c to escape when the push plate 5 is raised and lowered. Reference numeral 6c denotes a lever integrally formed with the locking member 6. This lever 6c protrudes from a through hole 4d formed in the upper surface of the lid body 4, so that the locking member 6 can be manually operated. 7 is push plate 5
The bellows 7 is hermetically sealed by an upper bellows plate 8 at its upper end and a lid cover 9 at its lower end by ultrasonic welding or the like.

Reference numeral 10 denotes an intake valve provided at the upper end of the bellows upper plate 8, and this intake valve 10 is normally kept in an open state by a restoring spring 11. Reference numeral 12 denotes a spring for restoring the bellows 7, which is built into the bellows 7. 1
3 is a seal packing that seals the container 2 and the lid cover 9. 4e is the inner flange 4b of the inner cylinder 4a.
A support claw is provided on the inner circumferential wall of the lid body 4 at a lower position and holds the lock member 6;
After inserting the push plate 5 into the inner cylinder 4a from above the lid 4 and passing the inner flange 4b at the lower end of the inner cylinder 4a, a predetermined position on the peripheral wall 5b of the push plate 5 from below the lid 4, That is, by fitting the lock member 6 between the protruding rib 5c and the protruding piece 5d, and then press-fitting the peripheral edge of the lock member 6 into the support claw 4e, the lock member 6 is held rotatably. It's summery.

In the above configuration, when the lock member 6 is rotated with the lock knob 6c, the groove 6b of the lock member 6 and the protruding rib 5c of the push plate 5 match, and at the time of this match, the push plate 5 moves downward. is possible.

Effects of the Invention As is clear from the above embodiments, according to the present invention, the circular locking member that prevents the downward movement of the push plate is rotatably and slidably provided, so that its movement is extremely smooth. This eliminates the possibility of jamming or twisting when operating the lock member, and also eliminates the possibility of the lock becoming incomplete due to poor sliding.As a result, there is no risk of burns or contamination of the floor due to the unexpected discharge of hot water. It will never be the same. Furthermore, since the locking member rotates and slides, the required space is small, and conventional parts can be shared, and since the operation part of the approximately square push plate is located in the same approximately square inner cylinder, Even if a rotating lock member is provided, it will not move with the rotation of the lock member, and there is no need to provide a special rotation regulating member.As a result, operability and safety can be greatly improved, and costs can be reduced. It can also provide some advantageous benefits.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of the main parts of a lid device for an electric water heater showing an embodiment of the present invention, Fig. 2 is a perspective view of the main parts, Fig. 3 is a sectional view of the main parts, and Fig. 4 is a perspective view of the main parts. FIG. 5 is a sectional view showing a conventional lid device for an electric water heater, and FIG. 5 is an exploded perspective view of the same essential parts. DESCRIPTION OF SYMBOLS 1...Water boiler main body, 2...Container, 4...Lid, 4a...Inner tube, 5...Press plate, 6...Lock member, 6c...Lever, 7...Bellows.

Claims (1)

[Scope of utility model registration request] A substantially square-shaped lid body is equipped with a bellows that pumps air into a container built into the water heater body to extract the liquid in the container, and the lid body has a roughly square-shaped operating section that compresses the bellows. An inner cylinder is vertically provided with a push plate inserted therein so that it can be raised and lowered, and a lever is provided at the bottom of the inner cylinder that protrudes to the outside of the lid, and movement of this lever causes the push plate to be moved upwardly and downwardly. A lid device for an electric water heater, which is provided with a rotatable and slidable circular locking member.