JP4036188B2 - Electric water heater - Google Patents

Description

  The present invention relates to an electric water heater that covers an upper opening of a container containing a liquid and is provided with a lid so as to be rotatable.

Conventionally, in this type of electric water heater, in order to open the lid from the closed state, first, the opening / closing lever for ensuring safety is moved to release the restriction of the lid opening knob, and then the lid is opened. The lock is released by operating the opening knob, and the lid is opened. Furthermore, when the lid is closed from the open state, the opening / closing lever is moved again to move it to the original position that regulates the operation so that the lid opening knob is not inadvertently operated (for example, Patent Document 1).
JP-A-3-140126

  However, in the above conventional configuration, when the user opens the lid, the lid does not open unless the open / close lever is operated to the restriction release side of the lid opening knob. May forget to operate the opening / closing lever, and the operation of the lid opening knob may become unregulated. In that case, there is a problem that if the cover opening knob is inadvertently touched, the cover body is accidentally opened.

  The present invention solves the above-described conventional problems, and an object thereof is to provide an electric water heater that prevents an erroneous operation such as inadvertently operating a lid opening knob to open the lid in any state.

In order to solve the above-mentioned conventional problems, an electric water heater of the present invention contains a body constituting an outer shell, an upper frame placed on the upper part of the body, and a liquid placed on a central opening of the upper frame. A container that heats the liquid in the container, a lid that covers the upper opening of the container, is rotatable about the upper frame and is always urged in the opening direction, and the upper frame A lock lever that engages with the lid to close the lid, and a lid that is rotatably fixed to the upper frame and that operates the lock lever to release the engagement between the upper frame and the lid An opening knob and an opening / closing lever provided on the lid for restricting the release of the lock lever by the lid opening knob, and the opening / closing lever is always attached to a position for restricting the release of the lock lever. Operation of releasing the restriction of the lock lever The lid can be opened by being engaged with the lid, and when the lid is closed, the opening / closing lever is disengaged from the lid and the lock lever is disengaged. It is configured to return to the restricted position .

  As a result, when the lid is closed, the open / close lever automatically moves to a position that restricts the operation of the lid opening knob, preventing accidental operations such as inadvertently operating the lid opening knob to open the lid. can do.

  The electric water heater of the present invention automatically moves the opening / closing lever to a position where the operation of the lid opening knob is restricted when the lid is closed, and the lid opening knob is opened carelessly in any state. Can prevent misoperation.

According to a first aspect of the present invention, there is provided a body constituting an outer shell, an upper frame placed on an upper portion of the body, a container for storing a liquid placed in a central opening of the upper frame, and heating the liquid in the container A heating means that covers the upper opening of the container, is rotatable about the upper frame and is always biased in the opening direction, and engages with the upper frame to close the lid. lock lever and the lid release mechanism for releasing the engagement between the lid and the upper frame by operating the lock lever while being rotatably secured to the upper frame, the lock by the lid release mechanism for and a closing lever provided on the lid for regulating the disengagement of the lever, the opening lever is always with being biased to a position for restricting the disengagement of the locking lever, deregulation of the locking lever During the operation, the lid can be opened by being engaged with the lid. And then, the closing of the lid, said opening and closing lever, the engagement between the lid is released, by the structure and the electric kettle to return to a position for restricting the disengagement of the locking lever, the cover When the body is closed, the open / close lever automatically moves to a position that regulates the operation of the lid opening knob, and it is possible to prevent erroneous operations such as inadvertently operating the lid opening knob to open the lid body in any state. .

The open / close lever is engaged with the lid when the lock lever is released, and the lid can be opened. When the lid is closed, the engagement is released and the lock lever is released. By adopting the configuration of returning to the position, the opening / closing lever can be automatically returned automatically, and an erroneous operation such as opening of the lid can be prevented.

According to a second aspect of the present invention, in particular, in the first aspect of the invention, the opening / closing lever is provided with a protrusion on a part thereof, and the protrusion contacts the upper frame when the lid is closed to engage the opening / closing lever with the lock lever By adopting a configuration that returns to a position that restricts release, the opening and closing lever can be automatically and easily returned by abutment between the protrusion of the opening and closing lever and the upper frame. Can be prevented.

In a third aspect of the invention, in particular, in the first aspect of the invention, a convex portion is provided on the upper frame so as to face the opening / closing lever engaged with the lid when the lock lever is released, and the opening / closing lever is closed when the lid is closed. The opening / closing lever is automatically returned by the contact between the opening / closing lever and the protruding portion of the upper frame. Therefore, it is possible to prevent erroneous operations such as opening the lid.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 to 3 show an electric water heater according to Embodiment 1 of the present invention.

  As shown in the figure, the electric water heater in the present embodiment includes a body 1 constituting an outer shell, an upper frame 4 placed on the upper portion of the body 1, and a liquid 2 placed on the central opening of the upper frame 4. A bottomed cylindrical container 3, heating means 5 for heating the liquid 2 in the container 3, and a lid body 6 covering the upper opening of the container 3. The lid body 6 is rotatably fixed by a hinge portion 4a provided behind the upper frame 4, and a front lock lever 7 is detachably engaged with the upper frame 4 to close the lid body. . The lid 6 is provided with a hinge pin 8 that engages with a hinge portion 4 a provided at the rear of the upper frame 4. A hinge spring 9 is provided that is fixed to the cover 6 and always urges the lid 6 in the opening direction. The hinge spring 9 increases the load when the lid 6 is closed with respect to the container 3 and decreases the load when the lid is opened.

  A lid opening knob 10 for releasing the engagement between the hook portion 4b of the upper frame 4 and the engaging portion 7b of the lock lever 7 is fixed to the upper frame 4 by a shaft 10b. The lid opening knob 10 is at a position where the protruding portion 10 a faces the pressing portion 7 a of the lock lever 7, and the pressing portion is urged upward by the knob spring 11. The lock lever 7 is urged in the direction of engagement with the hook portion 4b by a lock spring 12, and is urged forward in the present embodiment.

  Further, the lid 6 is provided with an opening / closing lever 13 for restricting the release of the engagement of the lock lever 7 with the upper frame 4 by the lid opening knob 10, and the opening / closing lever 13 is always in a position for regulating the operation of the lock lever 7. It is biased by the opening / closing spring 14. In the present embodiment, it is biased leftward by the opening / closing spring 14 when viewed from the front of the machine body. Further, the opening / closing lever 13 can be operated in the left-right direction (arrow direction in FIG. 3) of the lid body 6 with the operation portion 13a, and at the position where the operation of the lock lever 7 by the opening / closing spring 14 is restricted, the restricting portion. 13b contacts the lock lever 7 to regulate the operation of the lock lever 7.

  The operation of the above configuration will be described. When the lid 6 is opened, the open / close lever 13 is moved in the open direction against the bias of the open / close spring 14 by an external operation. In this embodiment, the vehicle moves in the right direction when viewed from the front of the body. Thereafter, the lid opening knob 10 is pressed by an external operation to release the engagement between the engaging portion 7 b of the lock lever 7 and the hook portion 4 b of the upper frame 4. This is because when the lid opening knob 10 is rotated by a predetermined amount about the shaft 10b, the protruding portion 10a pushes the pressing portion 7a of the lock lever 7, and the engaging portion 7b of the lock lever 7 and the hook portion 4b. To the disengaged position. Since the lid 6 is free to rotate around the hinge pin 8 by releasing the engagement between the lock lever 7 and the hook portion 4b, the lid 6 is opened by the action of the hinge spring 9. Next, when the lid body 6 is closed from the opened state, the engaging portion 7b of the lock lever 7 is engaged with the hook portion 4b to return to the original state. At this time, the open / close lever 13 is automatically moved to a position where the operation of the lock lever 7 is restricted by the open / close spring 14. Therefore, even if the lid opening knob 10 is inadvertently touched, the lid body 6 is not accidentally opened.

  Here, the lid opening knob 10 is pressed vertically downward in the present embodiment, but there is no problem as long as the same effect can be obtained even if the lid opening knob 10 is operated upward or in the left-right direction. Further, the lid opening knob 10 may be attached to the upper frame 4 in any manner as long as it is rotatable, and may be slid linearly such as horizontally and vertically as well as pivoted. Alternatively, the lock lever 7 may be provided on the upper frame 4, and the hook portion 4 b may be provided on the lid body 6. Further, although the pressing portion 7a is provided on the lock lever 7, the pressing portion 7a may be an independent separate member engaged with the lock lever 7. In this case, the operation of the opening / closing lever 13 is restricted by the lock lever. 7 or the pressing portion 7a. Further, a hinge pin 8 may be provided on the upper frame 4 and a hinge spring 9 may be attached.

  As is apparent from the figure, the electric water heater in the present embodiment can be discharged out of the machine body by driving a pump when hot water in the container 3 is required. It has the same function as an electric water heater known from the company.

(Embodiment 2)
4 to 6 show an open / close lever-related configuration of the electric water heater in Embodiment 2 of the present invention. The same elements as those of the first embodiment are denoted by the same reference numerals and the description thereof is omitted.

  In the present embodiment, the opening / closing lever 13 is engaged with the lid body 6 when the lock lever 7 is operated to release the restriction so that the lid body 6 can be opened, and the engagement is released when the lid body 6 is closed. In this configuration, the lock lever 7 is returned to the position where the engagement release is restricted.

  As an example of a specific configuration, the opening / closing lever 13 is provided with a lock portion 6a provided on the lid body 6 and an engaging lever provided on the opening / closing lever 13 during the operation of releasing the restriction of the lock lever 7, that is, in the state shown in FIGS. The joining portion 13c is engaged, the contact between the restricting portion 13b and the lock lever 7 is released, and the lid body 6 can be opened. The opening / closing lever 13 is provided with a protruding portion 13d at a part thereof, and this protruding portion 13d contacts the upper frame 4 when the lid body 6 is closed, and the locking portion 6a of the lid body 6 and the opening / closing lever 13 are provided. The engagement portion 13c is disengaged, and the opening / closing lever 13 is returned to the position where the release of the lock lever 7 is restricted. The protrusion 13d is desirably as close as possible to the engaging portion 13c.

  The operation of the above configuration will be described. When the lid 6 is opened, the open / close lever 13 is moved in the opening direction against the bias of the open / close spring 14 by an external operation. In this embodiment, the vehicle moves in the right direction when viewed from the front of the body. The opening / closing lever 13 slides on the inclined surface 6b of the lid body 6, and the locking portion 6a provided on the end surface of the inclined surface 6b and the engaging portion 13c provided on the lid opening knob 10 are engaged at a predetermined position. At this time, the opening / closing spring 14 is in a compressed state.

  As a result, the restriction of the lid opening knob 10 is released, and the engagement between the engaging portion 7b of the lock lever 7 and the hook portion 4b of the upper frame 4 is released by an external operation. Since the rotation about the hinge pin 8 is free, the lid 6 is automatically opened by the action of the hinge spring 11. When the lid 6 is closed, the engaging portion 7b of the lock lever 7 is engaged with the hook portion 4b by pushing the lid 6 into the upper frame 4 by an external operation, so that the closed state is brought about. Immediately before or after the closed state, the locking portion 6a and the opening / closing lever 13 provided on the lid body 6 are pushed up by abutting and pushing up a part of the upper frame 4 on which the projection 13d of the opening / closing lever 13 faces. The engagement portion 13c provided on the engagement portion 13c is disengaged, and the opening / closing lever 13 automatically moves to a position where the lock lever 7 is regulated by the opening / closing spring 14.

  The lid 6 covers the opening of the container 3 with an elastic body such as packing. For this reason, the protrusion 13d comes into contact with a part of the upper frame 4 facing the protrusion 4d when the elastic body is strongly compressed when the cover is closed, and the protrusion 13c is opposed to the compressed state in the normal closed state. A part of the upper frame 4 is not in contact.

  As described above, when the lid 6 is closed, the opening / closing lever 13 is always in a position where the operation of the lid opening knob 10 is restricted, and the lid 6 is opened by inadvertently operating the lid opening knob 10 in any state. Incorrect operation can be prevented.

(Embodiment 3)
FIG. 7 shows an open / close lever-related configuration of the electric water heater according to Embodiment 3 of the present invention. The same elements as those of the first embodiment are denoted by the same reference numerals and the description thereof is omitted.

  In the present embodiment, a convex portion 4 c is provided on the upper frame 4 so as to face the opening / closing lever 13 that is engaged with the lid 6 when the lock lever 7 is deregulated, and the opening / closing lever 13 is closed when the lid 6 is closed. Is brought into contact with the convex portion 4c to return the opening / closing lever 13 to a position where the engagement release of the lock lever 7 is restricted.

  As an example of a specific configuration, a notch portion 6c is provided in a part of the lid body 6, and the notch portion 6c allows the opening / closing lever 13 in a position to release the regulation of the operation of the lock lever 7 to face, The upper frame 4 facing the notch 6c is provided with a protrusion 4c, and when the lid 6 is closed by an external operation or the like, the protrusion 4c of the upper frame 4 comes into contact with and presses the opening / closing lever 13 from the notch 6c. . By this pressing, the opening / closing lever 13 is pushed up, and the engagement between the locking portion 6 a provided on the lid 6 and the engaging portion 13 c provided on the opening / closing lever 13 is released, and the opening / closing lever 13 operates the lock lever 7 by the opening / closing spring 14. It automatically moves to the restricted position automatically.

  As described above, when the lid 6 is closed, the opening / closing lever 13 is always in a position for restricting the operation of the lid opening knob 10, and the lid opening knob 10 is carelessly operated in any state to open the lid 6 or the like. Incorrect operation can be prevented.

  As described above, the electric water heater according to the present invention automatically moves the opening / closing lever to the restricted position when the lid is closed, and inadvertently operates the lid opening knob in any state. Since it is possible to prevent erroneous operations such as opening the lid, it is useful as an electric water heater equipped with a lid.

Sectional drawing of the electric water heater in Embodiment 1 of this invention Sectional drawing of the principal part of the electric water heater A plan view showing a part of the electric water heater cut away. Sectional drawing by the FIG. 2A-A line which shows the state at the time of opening-and-closing lever operation of the electric water heater in Embodiment 2 of this invention Sectional drawing which shows the state at the time of the opening-and-closing lever engagement Sectional drawing by the line 3B-B of the electric water heater Sectional drawing of the principal part of the electric water heater in Embodiment 3 of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Body 2 Liquid 3 Container 4 Upper frame 4c Convex part 5 Heating means 6 Lid 7 Lock lever 10 Lid opening knob 13 Opening / closing lever 13d Protrusion 14 Opening / closing spring

Claims (3)

A body constituting the outer shell, an upper frame placed on the upper part of the body, a container containing the liquid placed in the central opening of the upper frame, a heating means for heating the liquid in the container, covering the upper opening of the container, the lid is biased freely in and always in the opening direction rotation to said upper frame, and a lock lever for the lid is closed and engaged with the upper frame, the a lid release mechanism for releasing the engagement by operating the lock lever while being rotatably fixed to the upper frame and the upper frame and the lid member, the disengagement of the locking lever by the lid release mechanism, and a closing lever provided on the lid for regulating the opening and closing lever, always with being biased to a position for restricting the disengagement of the locking lever, during operation of the deregulation of the locking lever, the cover Engaged with a body to allow opening of the lid, and the lid In the closed, said opening lever, the engagement of the lid is released, configured as the electric kettle to return to a position for restricting the disengagement of the locking lever. Closing lever is partially to provide a protrusion, claim wherein protrusions having a configuration which makes return to a position for restricting the disengagement of the upper frame and the abutting locking said closing lever lever closing of the lid The electric water heater according to 1 . A convex portion is provided on the upper frame so as to face the opening and closing lever to be engaged with the lid at the time of the deregulation of the locking lever, the closing of the lid, the opening lever the operating lever in contact with the convex portion electric kettle according to claim 1 which has a structure which makes return to a position for restricting the disengagement of the locking lever.

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