JP2011244877A - Electric kettle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric kettle suppressing the occurrence of a trouble, such as an inner container falling out from a body and damaged, for further improving the safety.SOLUTION: The electric kettle includes: the resin-made cylindrical body; an inner container suspended in the body; a lid body removably mounted to close an upper opening of the body; a bottom body mounted to close a lower opening of the body; a heater for heating the bottom of the inner container; and a heat shield plate disposed between the heater and the bottom body and mounted to the body in a cantilever manner.

Description

  The present invention relates to an electric kettle.

  As a conventional electric kettle, for example, there is one disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 2009-136684).

  The electric kettle disclosed in Patent Document 1 includes a cylindrical body (also referred to as a kettle body), an inner container housed in the body, an aluminum brazing heater provided on the outer surface of the bottom of the inner container, and an outer surface of the bottom of the inner container. And a resin bottom body attached to the lower end of the body. A heat shield is provided between the aluminum brazing heater and the bottom so as to cover the lower part of the aluminum brazing heater. The heat shield plate is attached so as to be sandwiched between the attachment leg and the bottom body using a plurality of screws for attaching the bottom body to the attachment leg of the inner container.

  In the electric kettle of Patent Document 1, a heat shield plate is provided so as to cover the lower part of the aluminum brazing heater, so that the aluminum that melts and falls off from the aluminum brazing heater during abnormal heating such as air blowing is received by the heat shield plate. . This prevents problems such as melting of the molten and falling aluminum to the bottom made of resin and melting of the bottom.

JP 2009-136684 A

  In the conventional electric kettle as disclosed in Patent Document 1, the inner container is supported in the kettle body by supporting a flange portion provided around the upper end portion thereof with a protrusion provided on the inner peripheral surface of the kettle body. It is configured to be suspended. Moreover, in the conventional electric kettle, the whole kettle body is normally comprised with resin. For this reason, in a harsh environment, the protrusion of the resin kettle body deteriorates due to aging, etc., and when a liquid such as water is put into the inner container, it cannot withstand the weight of the inner container. The protrusion may be deformed or damaged. In this case, the weight of the inner container and the bottom body is concentrated on the attachment portion between the kettle body and the bottom body. As a result, the bottom body and the inner container fall out of the kettle body, and the liquid in the inner container is scattered. Failures such as breakage of the inner container may occur.

  Accordingly, an object of the present invention is to improve the above-described problem, and an electric kettle that can further improve safety by suppressing the occurrence of problems such as the inner container falling off the fuselage and damaging the inner container. Is to provide.

In order to achieve the above object, the present invention is configured as follows.
According to the first aspect of the present invention, a resin tubular body,
An inner container suspended in the body;
A lid that is detachably attached so as to close the upper opening of the body;
A bottom body attached to close the lower opening of the body;
A heater for heating the bottom of the inner container;
A heat shield disposed between the heater and the bottom body and attached to the body in a cantilever state;
Provide an electric kettle with

  According to the second aspect of the present invention, the inner container is suspended in the body by supporting a flange portion provided around the upper end portion by a protrusion provided on the inner peripheral surface of the body. An electric kettle according to the first aspect is provided.

  According to a third aspect of the present invention, there is provided the electric kettle according to the first or second aspect, wherein the heat shield plate is attached so as to have a gap with respect to the bottom body.

According to the fourth aspect of the present invention, a handle is attached to the body,
The heat shield is attached in the vicinity of the handle,
An electric kettle according to any one of the first to third aspects is provided.

  According to the electric kettle of the present invention, since the heat shield plate is attached to the fuselage, even if the protrusion on the inner peripheral surface of the fuselage is deformed or damaged without being able to withstand the weight of the inner container, the heat shield plate By this, the fall of the inner container can be received. Accordingly, it is possible to suppress the occurrence of problems such as the bottom body and the inner container falling off the body and damaging the inner container. Further, since the heat shield plate is attached to the body in a cantilever state, an increase in the number of parts can be minimized.

It is a perspective view of the electric kettle concerning the embodiment of the present invention. It is a disassembled perspective view of the electric kettle concerning the embodiment of the present invention. It is the perspective view partially shown in the cross section in order to show the internal structure of the kettle main body with which the electric kettle of FIG. 1 is provided, Comprising: It is a figure which shows the state which removed the inner container. It is the perspective view partially shown in the cross section in order to show the internal structure of the kettle main body with which the electric kettle of FIG. 1 is provided, Comprising: It is a figure which shows the state which attached the inner container. FIG. 2 is an exploded perspective view partially showing a cross section in order to show the internal structure of the kettle body included in the electric kettle of FIG. FIG. 2 is an exploded perspective view partially showing a cross section in order to show the internal structure of the kettle body included in the electric kettle of FIG. It is the top view which looked at the electric kettle concerning the embodiment of the present invention from the upper part. It is a perspective view which shows the structure of the bottom part of the cover body with which the electric kettle concerning embodiment of this invention is provided. FIG. 8 is a cross-sectional view taken along line A1-A1 of FIG. It is a side view which shows typically the structure of the kettle main body with which the electric kettle of FIG. 1 is provided. It is a side view which shows typically the modification of the kettle main body of FIG. It is a side view which shows typically the state which the projection part of the trunk | drum of the kettle main body concerning the modification of FIG. 11 deform | transformed, and the inner container fell. It is a side view which shows typically the state which the heat shield plate deform | transformed by the fall of the inner container shown in FIG. It is a side view which shows typically the state which the heat shield plate deform | transformed by the fall of the inner container shown in FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<Embodiment>
FIG. 1 is a perspective view of an electric kettle according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view thereof.

  As shown in FIG. 1, the electric kettle according to the present embodiment includes a power supply base 1 and a kettle main body 2 placed on the power supply base 1.

  As shown in FIG. 2, the power supply base 1 includes a substantially disk-shaped power supply base body 11, a substantially cylindrical electric connection terminal portion 12 that protrudes upward from the center of the upper surface of the power supply base body 11, and the power supply base body 11. And a power cord 13 housed in a detachable manner. By pulling out the power cord 13 from the power supply base body 11 and connecting the power cord 13 to a commercial power source or the like, the electrical connection terminal portion 12 can be fed.

  The kettle body 2 includes a cylindrical kettle body 3, a bottom body 4 attached so as to close the lower opening of the kettle body 3, and a lid 5 attached detachably so as to close the upper opening of the kettle body 3. And. The kettle body 3, the bottom body 4, and the lid 5 are each made of resin. A bottomed cylindrical inner container 6 into which a liquid such as water is placed is accommodated inside the kettle body 3.

  A part of the upper end portion of the kettle body 3 is formed so as to protrude outward, and a spout 7 for pouring out the liquid in the inner container 6 to the outside is provided in this portion. A handle 8 having a U-shaped cross section is attached to a side portion of the kettle body 3 opposite to the spout 7 across the central axis of the kettle body 3. By holding the handle 8 and tilting the kettle body 2 so that the spout 7 faces downward, the liquid in the inner container 6 can be poured out from the spout 7.

  3 and 4 are perspective views partially shown in cross section for showing the internal structure of the kettle body 2. FIG. 3 shows a state where the inner container 6 is removed, and FIG. 4 shows a state where the inner container 6 is attached.

  As shown in FIG. 3, an annular protrusion 3 a that protrudes inward is formed on the inner peripheral surface of the kettle body 3. As shown in FIG. 4, the inner container 6 is suspended in the kettle body 3 by supporting the flange portion 6 a provided around the upper end portion of the inner container 6 on the protrusion 3 a. In addition, the shape of the protrusion part 3a is not limited to an annular shape, and may be another shape.

  An annular aluminum brazing heater 9 is disposed on the outer surface of the bottom of the inner container 6 as an example of a heater. The aluminum brazing heater 9 is configured by fixing a sheathed heater to the bottom outer surface of the inner container 6 by aluminum welding.

  A heat shield plate 40 is disposed between the aluminum brazing heater 9 and the bottom body 4. The heat shield plate 40 receives aluminum that melts and falls off from the aluminum brazing heater 9 during abnormal heating due to air blow or the like. For this reason, it is preferable that the heat shield plate 40 is made of a metal having a melting point higher than that of aluminum, such as iron or stainless steel.

  The heat shield plate 40 is attached to the kettle body 3 in a cantilever state. Specifically, as shown in FIG. 3, the heat shield plate 40 includes a protruding piece 41 protruding upward, and a screw 51 penetrating the kettle body 3 is screwed into a screw hole 41 a provided in the protruding piece 41. Is attached to the kettle body 3.

  5 and 6 are exploded perspective views partially showing a cross section in order to show the internal structure of the kettle main body 2. FIG. 5 is a diagram of the kettle body 2 viewed from an obliquely lower side, and FIG. 6 is a diagram of the kettle body 2 viewed from an obliquely upper side.

  The aluminum brazing heater 9 is connected to an electrical connection terminal portion 9A that can be electrically connected to the electrical connection terminal portion 12 of the power supply base 1. The electrical connection terminal portion 9 </ b> A is disposed on the bottom outer surface of the inner container 6 and inside the annular aluminum brazing heater 9. A plurality of screw receiving portions 52 for screwing the bottom body 4 are provided on the outer surface of the bottom portion of the inner container 6.

  The bottom body 4 is formed with a plurality of screw holes 4a through which the shafts of the screws 53 can be inserted, and the heat shield plate 40 is formed with through holes 40a at positions corresponding to the screw holes 4a. The bottom body 4 is fitted with a lower end portion of the kettle body 3 in a step portion 4c provided on the outer peripheral portion thereof, and a screw 53 is screwed through the screw hole 4a of the bottom body 4 and the through hole 40a of the heat shield plate 40. By being screwed into the part 52, the kettle body 3 is attached. At this time, since the heat shield plate 40 is attached to the kettle body 3 in a cantilever state, it is not necessary to be supported by the bottom body 4. That is, the heat shield plate 40 may be attached so as to have a gap with respect to the bottom body 4. In this case, even if the temperature of the heat shield plate 40 rises due to the heat of the aluminum brazing heater 9, the gap between the bottom body 4 and the heat shield plate 40 becomes a heat insulating layer, and the resin bottom body 4 melts. This can be further prevented. In FIGS. 5 and 6, the screw 53 is shown as being composed of two parts, but the screw 53 may be composed of one part.

  The bottom body 4 and the heat shield plate 40 are formed with through holes 4b and 40b through which the electrical connection terminals 12 of the power supply base 1 can penetrate, respectively. With the power cord 13 connected to a commercial power source or the like, the kettle main body 2 is placed on the power supply stand 1, and the electrical connection terminal portion 12 is connected to the heater 9 through the through hole 4 b of the bottom body 4 and the through hole 40 b of the heat shield plate 40. By being connected to the electrical connection terminal portion 9A, power is supplied to the heater 9. Thereby, the heater 9 can heat the liquid in the inner container 6. Instructions for starting and stopping heating of the heater 9 can be switched by pressing an operation button 10 provided on the handle 8 as shown in FIG.

  FIG. 7 is a plan view of the kettle body 2 as viewed from above the lid 5, and FIG. 8 is a perspective view showing the structure on the bottom side of the lid 5.

  As shown in FIG. 7, the lid 5 has a pair of operation pieces 21 a configured to be movable in the X direction orthogonal to the Y direction in which a straight line connecting the spout 7 and the handle 8 extends in a plan view. , 21b. As shown in FIG. 8, the operation pieces 21 a and 21 b are coupled by a coil spring 22 and are urged away from each other in the X direction by the elastic force of the coil spring 22. As shown in FIG. 2 or FIG. 8, the end portions of the operation pieces 21a and 21b positioned on the peripheral wall 23 side of the lid 5 can protrude outward through the through holes 23a provided in the peripheral wall 23 of the lid 5. An engaging piece 24 is provided. As shown in FIG. 2, the engagement piece 24 is configured to be engageable with a locking recess 25 provided at the upper end portion of the inner peripheral surface of the kettle body 3.

  Attachment of the lid 5 to the kettle body 3 can be performed as follows. First, the operation pieces 21a and 21b are pressed against each other against the elastic force of the coil spring 22, and the respective engagement pieces 24 are retracted from the through holes 23a. In this state, the lid 5 is inserted into the upper end opening of the kettle body 3 and is aligned so that the through hole 23a and the locking recess 25 coincide. Thereafter, the pressure on the operation pieces 21a and 21b is released. As a result, the engagement piece 24 returns to the initial position protruding outward through the through hole 23 a by the elastic force of the coil spring 22 and engages with the locking recess 25. The lid 5 can be attached to the kettle body 3 as described above.

  In addition, the lid 5 is provided with a steam discharge port 26 for discharging the steam generated in the inner container 6 to the outside, and a steam passage 27 for communicating the inside of the inner container 6 with the steam discharge port 26. ing. The steam outlet 26 and the steam passage 27 are provided in a portion located on the handle 8 side when the lid 5 is attached to the kettle body 3. In order to prevent the liquid in the inner container 6 from being discharged from the vapor outlet 26 when the kettle body 2 falls, the vapor passage 27 is a conventionally known over-turn stop valve (see FIG. And a storage space (not shown).

  9 is a cross-sectional view taken along line A1-A1 of FIG. As shown in FIG. 9, the lid 5 has a pouring path 28 that allows the inside of the inner container 6 to communicate with the pouring outlet 7, a valve body 29 that can open and close the pouring path 28, and a closed position that blocks the pouring path 28. And an open / close lever 30 capable of moving the valve body 29 to an open position for opening the extraction passage 28. The pouring path 28, the valve body 29, and the opening / closing lever 30 are provided in a portion located on the pouring outlet 7 side when the lid body 5 is attached to the kettle body 3. In FIG. 9, the valve element 29 is located at the open position.

  Further, as shown in FIG. 9, the valve body 29 includes a disc-shaped valve body 29a and a shaft body 29b erected from the upper surface of the valve body 29a. The shaft body 29b is inserted into the cylindrical portion 5a penetrating the bottom wall of the lid body 5 in the thickness direction, and is guided by the cylindrical portion 5a so as to move in the thickness direction of the lid body 5. A coil spring 31 is attached around the shaft body 29b or the cylindrical portion 5a. The coil spring 31 urges a part of the shaft body 29 b so that the tip of the shaft body 29 b abuts on the opening / closing lever 30.

  As shown in FIG. 7, the opening / closing lever 30 is arranged in the X direction that intersects (orthogonal or substantially orthogonal) the moving direction of the valve body 29 along the oval guide hole 5 b provided in the top plate of the lid body 5. It is provided to be movable. In FIG. 7, when the open / close lever 30 is positioned at the right end of the guide hole 5b, the valve element 29 is positioned at the open position. At this time, the liquid in the inner container 6 can be poured out from the spout 7 through the spout 28. In this state, when the open / close lever 30 is moved to the left end portion of the guide hole 5b, the valve body 29 is moved to the closed position.

  According to the electric kettle according to the present embodiment, since the heat shield plate 40 is attached to the kettle body 3, even if the protrusion 3 a is deformed or damaged without being able to withstand the weight of the inner container 6, the heat shield plate. 40 can catch the fall of the inner container 6. Accordingly, it is possible to suppress the occurrence of problems such as the bottom body 4 and the inner container 6 falling off the kettle body 3 and the inner container 6 being damaged. Further, since the heat shield plate 40 is attached to the kettle body 3 in a cantilever state, the increase in the number of parts can be suppressed to only the screw 51.

  In addition, this invention is not limited to the said embodiment, It can implement in another various aspect. For example, in the above description, the screw receiving portion 52 is provided to attach the bottom body 4 to the inner container 6 as shown in FIG. 10, but the present invention is not limited to this. That is, as shown in FIG. 11, the screw receiving portion 52 may not be provided. In this case, as shown in FIG. 13, the protrusion 3a is deformed or damaged without being able to withstand the weight of the inner container 6, and the inner container 6 falls, and the bottom body 4 falls out of the kettle body 3 due to the drop impact. Can happen. On the other hand, according to this embodiment, since the heat shield plate 40 is attached to the kettle body 3, the heat shield plate 40 can catch the fall of the inner container 6 as shown in FIGS. According to this configuration, since the screws 53 and the like are not necessary, the number of parts can be reduced as compared with the conventional case, and the assemblability can be improved.

  In addition, it is preferable that the heat shield plate 40 has high rigidity so that the inner container 6 does not fall off from the kettle body 3. Further, the heat shield plate 40 is preferably attached to the kettle body 3 in the vicinity of the handle 8 as shown in FIGS. 14 and 15. Since the user uses the electric kettle with the handle 8, even if the heat shield 40 is excessively deformed by the drop impact of the inner container 6 and the inner container 6 falls out of the kettle body 3, the user It is possible to avoid the inner container 6 from hitting. Therefore, safety can be ensured.

  The electric kettle according to the present invention is useful for all electric kettles because it can further improve safety by suppressing the occurrence of problems such as the inner container falling off the body and damaging the inner container.

1 Power supply stand 2 Kettle body 3 Kettle fuselage (fuselage)
4 Bottom body 4a Screw hole 4b Through hole 4c Stepped portion 5 Lid 5a Tubular portion 5b Guide hole 6 Inner vessel 7 Outlet 8 Handle 10 Operation button 11 Power supply body 12 Electric connection terminal portion 21a, 21b Operation piece 22 Coil spring 23 Peripheral wall 23a Through hole 24 Engagement piece 25 Locking recess 26 Steam discharge port 27 Steam passage 28 Outlet passage 29 Valve body 29a Valve body 29b Shaft body 30 Opening / closing lever 31 Coil spring 40 Heat shield plate 40a, 40b Through hole 41 Projection piece 41a Screw Hole 51, 53 Screw 52 Screw receiving part

Claims (4)

A cylindrical body made of resin;
An inner container suspended in the body;
A lid that is detachably attached so as to close the upper opening of the body;
A bottom body attached to close the lower opening of the body;
A heater for heating the bottom of the inner container;
A heat shield disposed between the heater and the bottom body and attached to the body in a cantilever state;
Electric kettle with   2. The electric kettle according to claim 1, wherein the inner container is suspended in the body by a flange portion provided around the upper end portion being supported by a protrusion provided on an inner peripheral surface of the body. .   The electric kettle according to claim 1, wherein the heat shield plate is attached so as to have a gap with respect to the bottom body. A handle is attached to the body,
The heat shield is attached in the vicinity of the handle,
The electric kettle according to any one of claims 1 to 3.

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