JPH06339427A - Electric water heater - Google Patents

Abstract

PURPOSE:To eliminate the possibility of imperfect locking so as to enhance safety by pressing a locking member into contact with the upper wall face of the recessed portion of a main body when closing a lid body, and allowing the locking member to slide against a pressure member, climb over the entrance of the recessed portion, and be locked. CONSTITUTION:A locking member 5 to be locked to a main body 1 while a lid body 3 covering the opening of a container 2 is in its closed position is provided to the lid body 3 in such a manner as to be freely slidable in a generally horizontal direction, and is pressed forward by a spring 6. The main body 1 has a recessed portion 7 formed in its portion opposite to the locking member 5. When the lid body 3 being open is turned and closed, the locking member 5 is brought close to the recessed portion 7 and pressed into contact with the upper inclined wall face 9 of the recessed portion 7 so that the locking member 5 is slid backwards against the spring 6, climbs over the entrance 10 of the recessed portion 7 and is locked. To unlock, the locking member 5 is slid backward by an unlocking member 8 and unlocked.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric water heater that heats and keeps the contained liquid and discharges it outside the container.

[0002]

2. Description of the Related Art A conventional electric water heater will be described below.

An example of a schematic configuration of a conventional electric water heater is as shown in FIGS. 9 to 10, and 40 is a main body and 41
Is a container with an upper opening disposed in the main body 40, and 42 is a container 4
A lid that covers the opening of 1 and a heating element 43 that heats the liquid in the container.

Reference numeral 44 denotes an electric pump which is a means for drawing out the liquid in the container 41 to the outside of the body, and sucks the liquid from the suction port 45, and the discharge port 46 of the pump 44 and the outlet 47 to the outside of the body. The liquid is led out of the body via a water pipe 48 that communicates with the.

The structure around the lid 42 is as shown in the figure.
A lid body 42 is attached to a hinge portion 49 provided on the main body 41 so as to freely rotate in an arc.

A lock member 50 for locking the main body at its closed position is slidably arranged in a substantially horizontal direction on the lid 42, and is biased forward by a spring 51, which is a biasing means. It is energized.

A recess 52 for fitting is formed in the main body 40 at a position facing the lock member 50, and the lid 42 is locked to the main body 40 at the closed position by fitting them.

Reference numeral 53 is arranged on the lid 42 so as to be freely rotatable in an arc.
It is a lock release member for sliding the lock member 50 against the biasing force of the spring 51 by an external operation.

One end of the lock release member 53 has a lock member 5
The lock member 50 slides rearward against the biasing force of the spring 51 by rotating the lock releasing member 53 in an arc.

During the closing operation of the lid 42, the lid 42
Is rotated in an arc from the open state to bring the lock member 50 arranged in the lid 42 closer to the recess 52 formed in the main body 40 for fitting with the lock member 50, and the upper portion of the recess 52 is inclined. By pressing the lock member 50 against the wall surface 54, the lock member 50 is slid backward against the urging force of the spring 51, and the entrance 55 of the recess 52 is crossed to reach the lock state.

When the lid 42 is closed, the lock releasing member 53 causes the lock member 50 to slide rearward,
The entrance 55 of the recess 52 is overcome and the lock is released.

Reference numeral 56 denotes a seal member attached to the lid 42, which is in close contact with the flange portion 57 of the container 41.
It prevents the liquid inside from leaking out of the body.

Reference numeral 58 is a steam passage for discharging the steam in the container 41 to the outside of the body.

[0014]

In such a conventional configuration, when the lid 42 is closed, as shown in FIG. 11, the locking member 50 is located near the moment when the locking member 50 gets over the entrance 54 of the recess 52 of the main body 40. , The tip 59 of the lock member 50
And the entrance 55 of the recess 52 are meshed with each other, or the upward biasing force of the seal member 55 and the forward biasing force of the spring 51 balance each other. Although the posture is in the closed state, the lock member 50 is provided with the inlet 5 of the recess 52 of the main body 40.
There was a case where the state remained at 4, resulting in incomplete lock.

In such a state, if the body is accidentally tumbled, the lid 42 is easily opened by the impact, and the liquid in the container 41 flows out of the body, and especially the liquid has a high temperature. There was a risk of burns.

The present invention is intended to solve such a conventional problem, and it is an object of the present invention to eliminate the possibility of an incompletely locked state and provide an electric water heater with excellent safety.

[0017]

In order to achieve this object, an electric water heater according to the present invention has a container having a top opening for containing a liquid in a main body, and a lid for covering the opening of the container is arced. A lock member that locks the lid body to the main body at the closed position is rotatably mounted, and a recess that fits the lock member is formed in the main body. The lock member can be slid in a substantially horizontal direction. The lock member is urged in a fixed direction by the urging means, and when the lid is closed, the lock member is pressed against the wall surface of the upper portion of the recess of the main body to resist the urging force of the urging means. Slide the lock member to get over the entrance of the recess to reach the lock.When the lid is opened, the lock member is slid against the biasing force by an external operation, and the lid is closed. In the same way as overcoming the entrance of the recess to unlock it , The lock member is fitted in the recess of the main body so that the central portion of the lock member is inclined so that the center of the lock member is convex in the horizontal direction rather than the left and right, and when the lid is closed, the operation is performed. From the middle of the process until just before the completion of the lock, only the limited central part of the lock member is in pressure contact with the wall surface of the main body.

Further, the fitting portion of the locking member with the concave portion of the main body is provided with an inclination such that the central portion thereof is convex upward in the vertical direction with respect to the concave portion, and the closing operation of the lid is performed. Sometimes
From the middle of the operation to immediately before the completion of locking, only the limited central portion of the lock member is in pressure contact with the wall surface of the main body.

Further, a convex portion is formed in the central portion of the fitting portion of the lock member with the concave portion of the main body, and when the lid is closed, the convex portion of the lock member is provided from the middle of the closing operation to immediately before the completion of locking. Only the part is in pressure contact with the wall surface of the main body.

Further, a convex portion is formed on the wall surface of the main body at a position facing the substantially central portion of the lock member, and during the closing operation of the lid, from the middle of the operation to immediately before the completion of the lock, the wall surface of the main body is closed. Only the convex portion is in pressure contact with the fitting portion of the lock member.

[0021]

With this configuration, during the closing operation of the lid body, from the middle of the operation to immediately before the completion of locking, the press-contact area between the fitting portion of the lock member with the concave portion of the main body and the wall surface of the upper portion of the concave portion of the main body. Therefore, even if there is rattling of the lock member, the chance that they will engage or balance will decrease dramatically, as if the lid body was in the closed position. The chances of an incomplete lock appearing locked are almost eliminated.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show an example of the structure of the lid of the electric water heater according to the present invention and its surroundings.
Is a container with an upper surface opening arranged in the main body 1, and 3 is a lid that covers the opening of the container 2.

The lid 3 is a hinge portion 4 provided on the main body 1.
In addition, it is attached so that it can be rotated around the center of the arc.

A lock member 5 for locking the main body at its closed position is slidably arranged in a substantially horizontal direction on the lid body 3 and is forwardly moved by a spring 6 which is a biasing means. Being energized.

A recess 7 for fitting is formed in the main body 1 at a position facing the lock member 5, and the lid 3 is locked to the main body 1 in the closed position by fitting them.

Reference numeral 8 is a lock releasing member which is arranged on the lid 3 so as to be freely rotatable in an arc, and which allows the lock member 5 to slide by an external operation against the biasing force of the spring.

One end of the lock releasing member 8 is in contact with the lock member 5, and by rotating the lock releasing member 8 in an arc, the lock member 5 slides rearward against the biasing force of the spring 6.

When the lid 3 is closed, the lid 3 is arc-rotated from the open state, and the lock member 5 disposed inside the lid 3 is rotated.
Is moved closer to the recess 7 formed in the main body 1 for fitting with the lock member 5, and the lock member 5 is pressed against the inclined wall surface 9 at the upper portion of the recess 7, thereby causing the lock member 5 to move to the spring 6. Slide backwards against the biasing force to form the recess 7
Overcome the entrance 10 to reach the lock.

When the lid 3 is closed, the locking member 5 is slid backward by the unlocking member 8 to form the recess 7
Overcome the entrance 10 to unlock.

Reference numeral 11 denotes a seal member attached to the lid 3, which is in close contact with the flange 12 of the container 2 to prevent the liquid in the container 2 from leaking to the outside of the container.

Here, the recess 7 of the main body 1 of the lock member 5
In the fitting portion 14 with, the central portion 15 is
An inclined surface 17 is formed so as to be convex in a substantially horizontal direction with respect to the concave portion 7 of the main body 1.

Therefore, when the lock member 5 is pressed against the inclined wall surface 9 of the main body 1 when the lid 3 is closed,
From the middle of the operation until just before the lock is completed, the central part 15
Only the body comes into pressure contact with the wall surface of the main body 1 and reaches the lock.

As a result, the pressure contact area between the fitting portion of the lock member 5 with the recess 7 of the main body 1 and the wall surface 9 at the upper portion of the recess 7 is reduced, and the pressure contact is made only between the substantially central portions of the two.
Even if there is rattling or the like of the lock member 5, the chances of the two engaging with each other or being in equilibrium is greatly reduced, and the occurrence of incomplete locking can be prevented.

FIGS. 3 to 4 show an embodiment of the second invention, in which the fitting portion 1 of the lock member 5 into the recess 7 of the main body 1 is shown.
4, the central portion 15 is formed with an inclined surface 18 that is convex upward in the vertical direction with respect to the concave portion 7 of the main body 1 rather than the left and right 16.

FIGS. 5 to 6 show an embodiment of the third invention, in which the fitting portion 1 of the lock member 5 with the recess 7 of the main body 1 is shown.
In No. 4, the convex portion 19 is formed on the central portion 15.

FIGS. 7 to 8 show an embodiment of the fourth aspect of the invention, which is a substantially central portion of an inclined wall surface 9 above a recess 7 for fitting with the lock member 5 formed in the main body 1. Convex 20
Is formed.

The operation of the second invention to the fourth invention is the same as that of the first invention, and the fitting portion of the lock member 5 with the concave portion 7 of the main body 1 and the upper wall surface 9 of the concave portion 7 are Even if there is rattling of the lock member 5, for example, by reducing the pressure contact area of the both and making the pressure contact only between the substantially central portions of the both,
The chances of the two becoming intermeshed or in equilibrium are dramatically reduced, and the occurrence of incomplete locking can be prevented.

[0039]

As described above, according to the present invention, at the time of the closing operation of the lid, from the middle of the operation to immediately before the completion of the lock, the fitting portion of the lock member with the concave portion of the main body and the body The area of pressure contact with the wall surface at the top of the recess is reduced, resulting in pressure contact only between the approximately center portions of both, and even if there is rattling of the lock member, the chances of both meshing or balancing are drastically reduced. However, it is possible to prevent the incomplete lock from appearing that the lid seems to be locked in the closed position, and even if you accidentally tip the instrument over, the lid will open and the hot water in the container will be outside the instrument. It is possible to provide a highly safe electric water heater that can prevent the risk of spillage into the water.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view of an essential part showing a configuration around a lid of an electric water heater according to a first invention.

FIG. 2 is an enlarged vertical sectional view of the same main part.

FIG. 3 is an enlarged cross-sectional view of an essential part showing the configuration around the lid of the electric water heater according to the second invention.

FIG. 4 is an enlarged vertical sectional view of the same main part.

FIG. 5 is an enlarged transverse cross-sectional view of a main part showing a configuration around a lid of an electric water heater according to a third invention.

FIG. 6 is an enlarged vertical sectional view of the same main part.

FIG. 7 is an enlarged transverse cross-sectional view of a main part showing a configuration around a lid of an electric water heater according to a fourth invention.

FIG. 8 is an enlarged vertical sectional view of the same main part.

FIG. 9 is a vertical sectional view showing the configuration of a conventional electric water heater.

FIG. 10 is a cross-sectional view showing the configuration of the electric water heater.

FIG. 11 is a longitudinal cross-sectional view of a main part showing a configuration around a lid of the electric water heater.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Container 3 Lid body 4 Hinge part 5 Lock member 6 Spring 7 Recessed portion 8 (formed on the main body) 8 Lock release member 9 Wall surface (on top of the recessed portion of main body) 10 (Recessed portion) 11 Seal member 12 (Container) Flange part 13 steam passage 14 fitting part (of locking member) 15 central part (of fitting part) of locking member 16 left and right (of fitting part) 17 of locking member (of first invention) of locking member Inclined surface 18 Inclined surface of lock member (of second invention) 19 Convex portion of lock member (of third invention) 20 Convex portion of main body (of fourth invention)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takayo Mori Takashi Kadoma 1006 Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Kaoru Maekawa 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co.

Claims (4)

[Claims] 1. A container having an upper surface opening for containing a liquid is disposed in the main body, a lid covering the opening of the container is attached so as to be rotatable in an arc, and the lid is locked to the main body at a closed position. A lock member is disposed inside the lid, a recess is formed in the main body for fitting with the lock member, the lock member is slidably mounted in a substantially horizontal direction, and the lock member is fixed by an urging means. Urging the lock member against the urging force of the urging means during the closing operation of the lid body by pressing the lock member against the upper wall surface of the concave portion of the main body. , Overcoming the entrance of the recess to reach the lock, and when the lid is opened, the lock member is slid against the biasing force by an external operation,
Similar to the closing operation, the lock is released by overcoming the entrance of the recess, and the fitting portion of the lock member with the recess of the main body is formed with respect to the recess rather than the left and right at the center. By providing a slope that is convex in a substantially horizontal direction, at the time of closing operation of the lid, from the middle of the operation to immediately before the completion of locking, only a limited part in the center of the locking member is the wall surface of the main body. An electric water heater with pressure contact. 2. A container having an upper surface opening for containing a liquid is disposed in the main body, a lid covering the opening of the container is attached so as to be capable of arc rotation, and the lid is locked to the main body at a closed position. A lock member is disposed inside the lid, a recess is formed in the main body for fitting with the lock member, the lock member is slidably mounted in a substantially horizontal direction, and the lock member is fixed by an urging means. Urging the lock member against the urging force of the urging means during the closing operation of the lid body by pressing the lock member against the upper wall surface of the concave portion of the main body. , Overcoming the entrance of the recess to reach the lock, and when the lid is opened, the lock member is slid against the biasing force by an external operation,
Similar to the closing operation, the lock is released by overcoming the entrance of the recess, and the fitting portion of the lock member with the recess of the main body is formed with respect to the recess rather than the left and right at the center. When the lid is closed, only a limited part in the center of the lock member and the wall surface of the main body are provided during the closing operation of the lid from the middle of the operation to just before the lock is completed. An electric water heater with pressure contact. 3. A container having an upper surface opening for containing a liquid is disposed in the main body, a lid covering the opening of the container is attached so as to be rotatable in an arc, and the lid is locked to the main body at a closed position. A lock member disposed inside the lid, a recess for fitting the lock member is formed in the main body, the lock member is slidably mounted in a substantially horizontal direction, and the lock member is fixed by an urging means. Urging the lock member against the urging force of the urging means during the closing operation of the lid body by pressing the lock member against the upper wall surface of the concave portion of the main body. , Overcoming the entrance of the recess to reach the lock, and when the lid is opened, the lock member is slid against the biasing force by an external operation,
Similar to the closing operation, the lock is released by overcoming the entrance of the recess, and a protrusion is formed in the central part of the fitting portion of the lock member with the recess of the main body to form the lid. An electric water heater in which only the convex portion of the lock member is in pressure contact with the wall surface of the main body during the closing operation from the middle of the operation to immediately before the completion of locking. 4. A container having an upper surface opening for containing a liquid is disposed in the main body, a lid covering the opening of the container is attached so as to be rotatable in an arc, and the lid is locked to the main body at a closed position. A lock member is disposed inside the lid, a recess is formed in the main body for fitting with the lock member, the lock member is slidably mounted in a substantially horizontal direction, and the lock member is fixed by an urging means. Urging the lock member against the urging force of the urging means during the closing operation of the lid body by pressing the lock member against the upper wall surface of the concave portion of the main body. , Overcoming the entrance of the recess to reach the lock, and when the lid is opened, the lock member is slid against the biasing force by an external operation,
Similar to the closing operation, the lock is released by overcoming the entrance of the concave portion, and a convex portion is formed on the wall surface of the main body at a location facing the substantially central portion of the lock member, and An electric water heater in which only a convex portion on a wall surface of the main body is in pressure contact with a fitting portion of the lock member during the closing operation from the middle of the operation to immediately before completion of locking.