JP2005204870A - Electric kettle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that when a lid is suddenly opened, the lid is sometimes opened. <P>SOLUTION: This electric kettle includes: a locking claw 9 functioned to fix a lid body 6 and an upper frame 4, and moved backward to press a lock switching member 12 mentioned later, thereby releasing engagement of a lock switching member 12; a locking spring 10 energizing the locking claw 9 forward; a locking assisting member 11 for transmitting the force for pushing the locking claw 9 backward; the locking switching member 12 disposed in the vicinity of the locking claw 9 to switch locking of opening and closing operation of the lid body 6 depending on the presence/absence of pressure contact with the locking assisting member 11; and a locking switching spring 13 energizing the locking switching member 12 upward, wherein in the upper frame 4, a lid opening button 14 acting to push the locking assisting member 11 backward is provided in a position adjacent to the locking assisting member 11, whereby the lid opening operation is locked interlocking with sliding of the locking claw 9 when the lid is opened and closed to prevent the sudden opeing operation of the lid. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an electric water heater having a basic performance of heating and maintaining a liquid contained in a container and leading it out of the main body and further opening a lid by the force of a spring.

  Conventionally, this type of electric water heater is as shown in FIGS. 8 and 9 (see, for example, Patent Document 1). The structure of a conventional electric water heater will be described in detail below. 8 and 9, the main body 101 includes a container 102 that stores a liquid. The lid 103 is attached to the hinge portion 104 of the main body 101 so as to be freely rotatable in an arc. The lock member 105 is disposed in the lid body 103 and is urged forward by the first spring 106, and the claw portion 107 formed in the front portion is formed in the main body 101 in the closed position of the lid body 103. The lid 103 is engaged with the claw receiving portion 108, and the lid 103 is locked to the main body 101 in this state. The unlocking knob 109 has an axis 112 that fits into a hole 111 of a column 110 formed inside the lid 103, and is an external operation member that is attached to the arc 112 so as to be rotatable around the axis 112. The protrusion 114 formed below the external operation unit 113 is substantially in contact with the slope 115 formed on the lock member 105. The second spring 116 urges the lid 103 in the opening direction.

  When the external operation portion 113 of the lock release knob 109 is pressed, the projection 114 comes into pressure contact with the slope 115 of the lock member 105, so that the lock member 105 moves backward against the bias of the first spring 106. To go. When the pressing operation is further continued, the protrusion 114 finally comes off the slope 115 of the lock member 105, and the side surface 117 of the protrusion 114 and the substantially vertical end 118 formed in front of the slope 115 are in contact with each other. Become. This state is set so as to be realized when the claw portion 107 of the lock member 105 is disengaged from the claw receiving portion 108 of the main body 101 or when it is further retracted to a predetermined position. Here, the urging force of the second spring 116 in the opening direction of the lid body 103 is made sufficiently larger than the frictional force between the side surface 117 of the protrusion 114 and the end portion 118 of the lock member 105, thereby releasing the lock release knob. The lid 103 is arc-turned in the opening direction by the amount of play further downward from the 109 state. In this state, the claw portion 107 of the lock member 105 does not fit into the claw receiving portion 108 again, so that the lid 103 is reliably opened.

  In addition, it can be determined at a glance that the lid body 103 has been unlocked by slightly lifting the lid body itself. Further, in this state, the corner portion 119 formed on the front portion of the unlocking knob 109 is brought into contact with the upper surface 120 of the claw receiving portion 108 of the main body 101, so that this state can be maintained regardless of the magnitude of the pressing operation force. realizable. When the pressing operation is stopped from this state and the hand is released, the cover body 102 is arc-turned to a predetermined position by the urging force of the second spring 116.

The stopper 121 is slidably attached to the lid 103 so that the arm portions 122a and 122b are positioned below the lock release knob 109 depending on the sliding position. When the arms 122a and 122b are not positioned below the unlocking knob 109, the lid 103 can be unlocked and rotated as described above. Since the arc rotation of the release knob 109 is stopped, the pressing operation force is not transmitted to the lock member 105. Therefore, the lid 103 does not open even if a pressing operation is performed by mistake. Further, even if the stopper 121 is operated with the lid 103 opened, the operation of the lock member 105 is not restricted. Therefore, by pressing the lid 103 against the main body 101 in the closing direction, the claw portion 107 of the lock member 105 Fits into the receiving part 108 and can be locked.
JP-A-3-140126

  However, in the above-described conventional configuration, the lid opening operation must be locked manually. If the locking operation is not performed after the lid body is closed, the lid opens when the lid opening operation is unexpectedly performed. There was a problem.

  In addition, the electric water heater of the present invention is configured such that the lid opening operation is automatically locked without locking when the lid is closed, preventing the unexpected lid opening operation, and a highly safe electric water heater. The purpose is to provide.

  In order to solve the above-described conventional problems, an electric water heater of the present invention includes a container for storing a liquid, an upper frame for holding the outer periphery of the upper opening of the container, a body positioned at the lower part of the upper frame, and the container A lid that covers the upper opening of the lid, a hinge spring at the rear of the lid that arcs and pivots the lid upward, and the lid that engages with a hook portion of the upper frame. And a lock claw that serves to release the engagement between the switching elastic portion of the lock switching member and the lower release hole provided in the inner lid by pushing the lock switching member described later when retreating. A lock spring that urges the claw forward, a lock auxiliary member that is adjacent to the lock claw and transmits a force pushing the lock claw backward, and a lid that is in the vicinity of the lock claw depending on whether there is pressure contact with the lock auxiliary member Lock that switches the body open / close operation lock A switching member and a lock switching spring that urges the lock switching member upward are provided, and the upper frame includes a lid opening button that functions to push the lock auxiliary member backward at a position adjacent to the lock auxiliary member. When the lid is opened and closed, the lock opening member is locked in contact with the lock auxiliary member and the lock switching member where the switching elastic part engages with the upper lock hole of the inner lid. The lid opening operation can be prevented and higher safety can be maintained.

  The electric water heater of the present invention automatically locks the lid opening operation immediately after opening and closing the lid, and the lid will not open unless the lock is released, thus preventing unexpected lid opening operation and maintaining higher safety. I can do things.

  The first invention includes a container for storing a liquid, an upper frame for holding the outer periphery of the upper opening of the container, a body positioned at the lower part of the upper frame, a lid for covering the upper opening of the container, A hinge spring at the rear part of the lid body that arcs and pivots the lid body upward, and the lid body and the upper frame are fixed to the lid body by engaging with a hook portion of the upper frame and retracted. Sometimes a lock claw that plays the role of releasing the engagement of the lock switching member by pushing the lock switching member described later, a lock spring that biases the lock claw forward, and a force that pushes the lock claw backward adjacent to the lock claw A lock assisting member that transmits a lock, a lock switching member that is in the vicinity of the lock pawl and that switches the lock of the lid opening / closing operation depending on whether there is pressure contact with the lock assisting member, and urges the lock switching member upward And a lock switching spring. Has a lid opening button that works to push the lock assisting member backward at a position adjacent to the lock assisting member, so that when the lid is closed, the lock claw is pushed back by the upper frame, and the lock is switched. By pushing the switching elastic part of the member, the switching elastic part and the lower release hole are disengaged, and the lock switching member moves to the upper locking position. As a result, the lock switching member prevents the lock assisting member from moving backward during the lid opening operation, and the lid opening operation is locked. When the lid is opened, the lid opening button pushes the lock assisting member, and both the lock assisting member and the lock pawl are retracted. At that time, the lock claw presses the switching elastic part of the lock switching member and the lock switching member tries to move upward, but the lock assisting member acts as a stopper and the lid opening operation is not locked. The opening automatic lock operation can be performed without obstructing the lid opening operation. As described above, when the lid is closed, the lid opening operation is automatically locked, and if the lock is not released, the lid will not open. Can do.

  In the second aspect of the invention, in particular, an inclined shape is provided in the lower part of the lock auxiliary member of the first invention and the lateral upper part of the lock switching member, and the lock switching member and the lock auxiliary member in the middle of opening the lid are pressed in the vertical direction. Thus, by adopting a configuration in which the lock switching member pushes the lock auxiliary member forward, it is possible to prevent the lock switching member and the lock auxiliary member from being stopped in an unlocked state when not locked immediately after the lid is opened.

(Embodiment 1)
FIG. 1 shows a sectional view of an electric water heater according to the first embodiment of the present invention.

  In FIG. 1, a body 1 constituting an outer shell contains a container 3 for storing a liquid 2. The upper frame 4 is placed on the upper part of the body, and the container 3 is placed on the central opening. The lid 6 covers the upper surface opening of the container 3. The lid 6 has a decorative frame 6a with a packing 6b attached to the entire periphery, an outer lid 6c constituting the outer shell, and the decorative frame 6a and the outer lid 6c. The pin 6e, the inner lid 7 provided with a hinge spring 6f for applying a force for rotating the lid upward about the pin 6e, and the lock mechanism portion 8 are configured.

  The lock mechanism 8 includes a lock claw 9, a lock spring 10, a lock auxiliary member 11, a lock switching member 12, and a lock switching spring 13. The lock claw 9 is engaged between the lid body 6 and the hook portion 4a of the upper frame 4 to fix both of them against the force of the hinge spring 6f. The lid body 6 is rotated upward by the force of the hinge spring 6f. The lock spring 10 biases the lock claw 9 and presses the lock claw 9 forward to give a force for maintaining the engagement between the lock claw 9 and the hook portion 4a. The lock assisting member 11 is located between the lid opening button 14 and the lock claw 9 when the lid is opened, and plays a role of transmitting force from the lid opening button 14 to the lock claw 9 (see FIG. 5). Contacting the switching member 12 (see FIG. 4) serves to stop the sliding of the lid opening button 14 and the lock claw 9. The lock switching member 12 has a switching elastic portion 12a and is positioned by engaging the switching elastic portion 12a with the upper lock hole 7a or the lower release hole 7b of the inner lid 7. When the switching elastic portion 12a is positioned in the upper lock hole 7a, the lock switching member 12 locks the lid opening operation by preventing the lock auxiliary member 11 from moving backward. When the switching elastic portion 12a is in the lower release hole 7b, the lock auxiliary member 11 slides back and forth, and the lock claw 9 is retracted to realize the lid opening operation.

  About the electric water heater comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, FIG. 2 shows an outline of the electric water heater body and the lock mechanism portion 8, and FIGS. 3 and 6 are cross-sectional views taken along the line AA in FIG. 2, and FIGS. 4 and 5 are BB in FIG. It is sectional drawing in a line. FIGS. 3 and 4 (a) to (c) show the lid closing operation. When the lid is closed from the unlocked state, the lock claw 9 is pushed backward by the hook portion 4a (FIG. 3B). The lock claw 9 slides backward to press the switching elastic portion 12a of the lock switching member 12, and the switching elastic portion 12a disengages from the lower release hole 7b, thereby pushing the lock switching spring 13 upward. Then, the lock spring 12 is stopped by moving upward and engaging the upper lock hole 7a and the switching elastic portion 12a (FIG. 3C). At that time, in the cross section taken along the line BB in FIG. 2, the lock switching member 12 is in a position that prevents the lock auxiliary member 11 from moving backward as shown in FIG. 4C. The force is not transmitted to the claw 9, and the lid opening operation is locked.

  Further, when the switching elastic portion 12a of the lock switching member 12 is already in the upper lock hole 7a when the lid is opened, the switching claw 9 does not act on the lock switching member 12 when the lid is closed, and the switching elastic portion 12a remains as it is in the upper lock hole. 7a remains engaged, and the lid opening operation is locked.

  FIGS. 5 and 6 (a) to (d) show the lid opening operation. When the lock switching member 12 is pushed downward from the state where the switching elastic portion 12a is engaged with the upper lock hole 7a as shown in FIGS. 5 (a) and 6 (a), the switching elastic portion 12a is shown in FIG. 6 (a). Therefore, it is pushed rearward by the inner lid 7, disengages from the upper lock hole 7 a, stops at the position where it engages with the lower release hole 7 b, and the lid opening operation is unlocked. Next, when the lid opening button 14 is pushed as shown in FIGS. 5B and 6B, the lock assisting member 11 is pushed back by the lid opening button 14 as shown in FIG. 5B. When the lock assisting member 11 moves backward as shown in FIG. 6B, the lock claw 9 also moves backward. When the lock claw 9 is retracted, the switching elastic portion 12a is pushed backward, the engagement with the lower release hole 7b is released, and the lock switching member 12 is moved upward by the force of the lock switching spring 13. However, as shown in FIG. 5 (c), the lock switching member 12 stops when it comes in contact with the lower part of the lock auxiliary member 11, so that the backward movement of the lock auxiliary member 11 is not locked, and the lid opening operation is continued. . At the same time, when the lock claw 9 is retracted, the engagement with the hook portion 4a is released, and the lid 6 is opened. After the cover is opened, as shown in FIG. 6D, the lock spring 10 pushes the lock claw 9 forward, so that the lock auxiliary member 11 is also moved forward, and the lock switching member 12 is movable upward. 12 moves to a position where the lock switching spring 12a engages with the upper lock hole 7a, and the lid opening operation is locked.

  As described above, in the present embodiment, the container 3 that stores the liquid 2, the upper frame 4 that holds the outer periphery of the upper opening of the container 3, the body 1 that is positioned below the upper frame 4, A lid 6 that covers the upper opening of the container 3, a hinge spring 6 f that is provided at the rear of the lid 6 and that pivots the lid 6 upwardly, and a hook 4 a of the upper frame 4 on the lid 6. A lock claw 9 that fixes the lid body 6 and the upper frame 4 by engaging with each other, and releases the engagement of the lock switching member 12 by pushing the lock switching member 12 described later when retreating, and a lock claw A lock spring 10 that urges 9 forward, a lock auxiliary member 11 that is adjacent to the lock claw 9 and transmits a force pushing the lock claw 9 backward, and the lock auxiliary member 11 that is in the vicinity of the lock claw 9 The lock of the opening / closing operation of the lid body 6 is switched depending on the presence or absence of pressure contact A lock switching member 12 and a lock switching spring 13 for urging the lock switching member 12 upward are provided, and the upper frame 4 functions to push the lock auxiliary member 11 backward to a position adjacent to the lock auxiliary member 11. With the configuration including the lid opening button 14 to be operated, the lock assisting member and the lock switching member are simultaneously engaged immediately after the lid opening / closing operation, and the lid opening operation is locked. Occurrence can be prevented and higher safety can be maintained.

  In this embodiment, the sliding direction of the lock switching member 12 is the vertical direction, but the biasing direction of the lock switching spring 13 is the left-right direction, the sliding direction of the lock switching member 12 is the left-right direction, and the upper direction. The same effect can be obtained even if the lock hole 7a and the lower release hole 7b are arranged side by side.

  The hinge spring 6f is a spring, but may be an elastic body such as resin.

(Embodiment 2)
FIG. 7 is a sectional view of an electric water heater according to the second embodiment of the present invention. As shown in FIG. 7, an inclination is provided in the back lower part 11a of the lock auxiliary member 11 and the horizontal upper part 12b of the lock switching member 12, and the lock switching member 12 and the lock auxiliary member 11 are pressed in the vertical direction while the lid is opened. By adopting a configuration in which the lock switching member 12 pushes the lock auxiliary member 11 forward, the lock auxiliary member 11 does not return to the front due to frictional force with the lock switching member 12 at the time of pressure contact between the lock claw 9 and the hook portion 4a. The situation of not engaging can be prevented.

  As mentioned above, since the electric water heater of this invention can prevent generation | occurrence | production of the unexpected lid opening operation | movement, it can apply to uses, such as a heating cooker which opens a lid | cover with the force of a spring.

Schematic sectional view of an electric water heater in Embodiment 1 of the present invention (A) Perspective view showing a general view of the main body of the electric water heater in Embodiment 1 of the present invention (b) Perspective view showing the lock mechanism portion (A) Cross-sectional view of the electric water heater according to Embodiment 1 of the present invention when the lid is opened along line AA in FIG. 2 (b) Cross-sectional view during closing of the lid (c) Cross-sectional view immediately after closing the lid (d) ) Cross-sectional view of the main part of the lock switching member (A) Cross-sectional view of the electric water heater according to Embodiment 1 of the present invention when the lid is opened along line BB in FIG. 2 (b) Cross-sectional view in the middle of closing the lid (c) Cross-sectional view immediately after closing the lid (A) Cross-sectional view of the electric water heater according to Embodiment 1 of the present invention in the middle of the unlocking operation along line BB in FIG. 2 (b) Cross-sectional view of the lid opening operation in progress (c) Cross-section of the lid opening operation in progress Figure (d) Sectional view immediately after opening the lid (A) Cross-sectional view of the electric water heater according to Embodiment 1 of the present invention in the middle of the unlocking operation along line AA in FIG. 2 (b) Cross-sectional view in the middle of the lid opening operation (c) Cross-section in the middle of the lid opening operation Figure (d) Sectional view immediately after opening the lid (A) Cross-sectional view of the electric water heater according to Embodiment 2 of the present invention in the middle of the lid opening operation along line BB in FIG. 2 (b) Cross-sectional view of the electric water heater in the middle of the lid opening operation Schematic diagram of a conventional electric water heater Schematic diagram of a conventional electric water heater

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Body 2 Liquid 3 Container 4 Upper frame 4a Hook part 6 Lid 6f Hinge spring 7 Middle lid 7a Upper lock hole 7b Lower release hole 9 Lock claw 10 Lock spring 11 Lock auxiliary member 11a Back lower part 12 Lock switching member 12a Switching elastic part 12b Horizontal upper part 13 Lock switching spring 14 Cover open button

Claims (2)

A container for storing liquid; an upper frame for holding the outer periphery of the upper opening of the container; a body located at a lower portion of the upper frame; a lid for covering the upper opening of the container; and a rear part of the lid There is a hinge spring that rotates the lid upward in an arc, and the lid is fixed to the upper frame by engaging with the hook of the upper frame. The lock claw that plays a role of releasing the engagement between the switching elastic portion of the lock switching member and the lower release hole provided in the inner lid, a lock spring that biases the lock claw forward, and adjacent to the lock claw, A lock auxiliary member for transmitting a force for pushing the lock claw backward, a lock switching member for switching the lock of the lid opening / closing operation depending on the presence or absence of pressure contact with the lock auxiliary member near the lock claw, and the lock switching Lock switching to urge the member upward The upper frame is provided with a lid opening button that functions to push the lock auxiliary member backward at a position adjacent to the lock auxiliary member, and the lock auxiliary member is interlocked with sliding of the lock claw when the lid is opened and closed. An electric water heater is characterized in that the lid opening operation is locked when the switching elastic member and the lock switching member engaged with the upper lock hole of the inner lid are pressed against each other. Inclination is provided in the lower part of the lock auxiliary member and the horizontal upper part of the lock switching member, and the lock switching member pushes the lock auxiliary member forward while the lock switching member and the lock auxiliary member are pressed in the vertical direction while the lid is open. The electric water heater according to claim 1.

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