JP4218648B2 - Electric pot - Google Patents

Description

  The present invention relates to the structure of the lid portion of the electric pot.

  In the case of a conventional electric pot, the cover portion is generally integrally formed by superimposing a single-piece outer cover panel and an inner cover panel of the same structure on top and bottom at a predetermined interval. The end is pivotably attached to the rear end of the shoulder on the main body side via a hinge mechanism, and the front end is detachably attached to the front end of the shoulder on the pot main body side via a lock and lock opening / closing mechanism. (See Patent Document 1).

JP 2003-310439 A (Specification 1-5, FIG. 1, FIG. 3-5)

  However, the structure of the lid portion of the conventional electric pot has the following problems.

  (1) Since both the outer cover panel and the inner cover panel have a single panel structure over the entire wide area, the torsional rigidity is low, and deformation due to heat during molding and after molding is likely to occur.

  In particular, when the electric pot is turned over, deformation is more likely to occur due to an increase in internal pressure caused by stirring hot water.

  (2) The heat insulation performance at the center of the lid corresponding to the inner container opening is not always sufficient.

  (3) Because of the integral molding, it is difficult to apply external decoration such as a two-tone color shape.

  (4) Since the lock opening / closing lever (its pivot shaft) of the lock opening / closing mechanism is fixed by the outer cover panel, a boundary rib is required around the opening / closing lever, and a step is generated between them. It was easy, and there was a possibility that a finger might get caught during the lid opening / closing operation. Further, the careability deteriorated as the gap increased.

  The present invention has been made in order to solve such problems. While the concave portion is provided in the lid panel body, the concave portion is fitted and integrated with the concave portion, and is closed between the concave portion on the lid panel body side. An object of the present invention is to provide an electric pot having a lid structure that has high strength against deformation and excellent heat insulation performance by providing an exterior member that forms the structure.

  In order to achieve the same object, the present invention is configured with the following problem solving means.

(1) Invention of Claim 1 The present invention comprises an electric pot body having an inner container and a heater, and a lid attached to the upper part of the electric pot body so as to open and close the opening of the upper part of the inner container , An electric pot in which an overturn stop water valve is provided in each of a front hot water supply passage at the upper part of the electric pot body and a steam passage on the rear side of the lid body, and the lid body includes a lid panel body provided with a recess on the upper surface side. The outer member is integrally fitted to the recess and forms a closed cross-section structure with the recess, and the inner cover panel is attached to the back side of the lid panel body and forms a steam passage. A concave groove portion is further provided in the concave portion of the lid panel body, and a vertical wall portion provided on the exterior member side is fitted and fixed .

In the above configuration, an electric pot main body having an inner container and a heater, and a lid attached to the upper part of the electric pot main body so as to open and close the opening of the upper part of the inner container are provided. In an electric pot in which a hot-water supply passage and a steam passage on the rear side of the lid body are provided with an overturn stop water valve, the lid body is fitted and integrated with the lid panel body provided with a recess on the upper surface side. And an inner cover panel that is attached to the back surface side of the lid panel body and forms a steam passage.

Therefore, the closed pot structure formed by the recessed portion formed in the lid panel body and the exterior member fitted and integrated in the recessed portion of the lid panel body has a high strength against deformation and excellent heat insulation performance. The lid structure can be realized easily and at low cost.

On the other hand, in the present invention, as described above, the front side hot water supply passage at the upper part of the electric pot main body and the steam passage at the rear side of the lid body are provided with overturn stop water valves, respectively, so that the water stop when the electric pot falls is stopped. To do. Therefore, when the electric pot falls, the internal pressure due to the hot water in the inner container tends to increase.

Therefore, in the present invention, a concave groove is further provided in the concave portion of the lid panel body, and the vertical wall provided on the exterior member side is fitted and fixed in the concave groove.

In this case, the strength of the closed cross-section structure having high strength formed by the concave portion of the lid panel body and the exterior member is further improved by the combination of the concave groove portion and the vertical wall portion, and the electric pot falls. Deformation when the internal pressure increases due to hot water at the time is also less likely to occur.

(2) Invention of Claim 2 The present invention comprises an electric pot body having an inner container and a heater, and a lid attached to the upper part of the electric pot body so as to open and close the opening of the upper part of the inner container. An electric pot, wherein the lid includes a lid panel body provided with a recess on the upper surface side, and an exterior member that is fitted and integrated with the recess to form a closed cross-section structure between the lid and the recess. The inner cover panel is attached to the back side of the lid panel body and forms a steam passage. The lid is provided between the exterior member and the lid panel body via a rotation shaft provided on the lid panel body side. It is characterized in that the open / close lever is pivotably attached .

According to such a configuration, in an electric pot comprising an electric pot main body having an inner container and a heater, and a lid attached to the upper portion of the electric pot main body so as to open and close the opening of the upper portion of the inner container. A lid panel body provided with a recess on the upper surface side; an exterior member that is fitted and integrated with the recess to form a closed cross-section structure; and a back surface of the lid panel body And an inner cover panel which is attached to the side and forms a steam passage.

Therefore, the closed pot structure formed by the recessed portion formed in the lid panel body and the exterior member fitted and integrated in the recessed portion of the lid panel body has a high strength against deformation and excellent heat insulation performance. The lid structure can be realized easily and at low cost.

Moreover, in this case, in this case, a lid opening / closing lever is pivotably attached between the exterior member and the lid panel body via a pivot shaft provided on the lid panel body side.

According to such a configuration, it is not necessary to provide boundary ribs around the lid opening / closing lever, and there are no steps around the lid opening / closing lever, thereby improving the operability and maintenance of the lid opening / closing lever.

(3) Invention of Claim 3 The present invention comprises an electric pot body having an inner container and a heater, and a lid attached to the upper part of the electric pot body so as to open and close the opening of the upper part of the inner container. An electric pot, wherein the lid includes a lid panel body provided with a recess on the upper surface side, and an exterior member that is fitted and integrated with the recess to form a closed cross-section structure between the lid and the recess. An inner cover panel that is attached to the back side of the lid panel body and forms a steam passage. The exterior member is provided from the front end side opening / closing lever portion of the lid body to the rear end side hinge portion. The part is formed in the hinge cover .

According to such a configuration, in an electric pot comprising an electric pot main body having an inner container and a heater, and a lid attached to the upper portion of the electric pot main body so as to open and close the opening of the upper portion of the inner container. A lid panel body provided with a recess on the upper surface side; an exterior member that is fitted and integrated with the recess to form a closed cross-section structure; and a back surface of the lid panel body And an inner cover panel which is attached to the side and forms a steam passage.

Therefore, the closed pot structure formed by the recessed portion formed in the lid panel body and the exterior member fitted and integrated in the recessed portion of the lid panel body has a high strength against deformation and excellent heat insulation performance. The lid structure can be realized easily and at low cost.

Moreover, in this case, in this case, the exterior member is provided from the front end side opening / closing lever portion of the lid body to the rear end side hinge portion, and the rear end portion is formed on the hinge cover.

According to such a configuration, the conventional hinge cover as a separate member can be eliminated, and the number of parts does not need to be increased.

  As a result, according to the present invention, it is possible to provide an electric pot that reliably solves the problems of the conventional electric pots described above.

  Hereinafter, the configuration and operation of an electric pot according to the best embodiment of the present invention will be described with reference to the accompanying drawings.

(Composition of the entire pot and main body)
1 and 2 show the configuration of the entire electric pot and the main body according to the best mode of the present invention.

  First, as shown in FIGS. 1 and 2, the electric pot includes a pot body 1 having a bottomed cylindrical inner container 3 having an open top, and a lid body for opening and closing the upper side opening of the pot body 1. 2, a water heater 4 A that is a heating means for heating the inner container 3 during boiling, a heat retaining heater 4 B that is a heating means for heating the inner container 3, and hot water in the inner container 3 are externally connected. A hot water supply passage 5 for supplying hot water and an electric hot water supply pump 6 for sending hot water in the inner container 3 to the outside through the hot water supply passage 5 in a state where an AC power source is connected.

  The pot body 1 is formed by integrally joining the cylindrical outer case 7 made of a synthetic resin constituting the outer side surface portion, the inner container 3 constituting the inner side surface portion, and the outer case 7 and the inner container 3 on the upper side. An annular shoulder member 8 made of synthetic resin to be fixed and a synthetic resin bottom member 9 which is fitted inside the bottom portion of the outer case 7 and constitutes the bottom portion of the outer case 7.

  The bottom portion 3a of the inner container 3 protrudes slightly upward except for a predetermined width portion on the outer peripheral side, and is formed into a cylindrical shape. On the lower surface side thereof, the water heater 4A and the heat retaining heater 4B (for example, a mica plate) are formed. Are made of mica heaters holding two sets of heating elements having different wattages.

  On the other hand, reference numeral 10 denotes a bottom sensor (hot water temperature sensor) that acts as a hot water temperature detecting means for detecting the temperature of the inner container 3 (in other words, the temperature of hot water in the inner container 3), and is composed of, for example, a thermistor. ing.

  Reference numeral 33 designates a portion 8b, 8c, 8d portion of the upper end side shoulder portion 8 of the front portion of the pot body 1 and an upper end side 7a portion of the outer case 7 extending forward by a predetermined dimension, and on the upper portion of the extension portion. It is a collar portion formed by engaging a predetermined cover member 27.

  At the center of the upper surface side of the flange portion 33, a concave portion 27b for fitting an operation panel provided with a switch, a liquid crystal display and the like is provided by denting the cover member 27.

  Of the extending portions 8b to 8c to 8d extending forward from the shoulder portion 8, the bowl-shaped step portions 8b to 8c along the opening of the inner container 3 are provided with a locking mechanism (engagement claw) of the lid 2 described later. On the other hand, the front end side portion having the engaging claw projecting and retracting mechanism is fitted and supported so as to be locked / unlockable. The rear end side flange-like edge 27a of the cover member 27 is engaged and fixed (see FIGS. 2 and 6).

  On the other hand, the lid 2 includes a synthetic resin-made lid panel body 11 made of synthetic resin, and a synthetic resin exterior member 14 fitted and integrated with the upper surface side recess 11a of the lid panel body 11. The inner cover panel 12 made of synthetic resin is attached to the back side of the lid panel main body 11 and forms steam passages 21a to 21g. The hinge receiver 8a provided at the rear end of the shoulder member 8 On the other hand, it is supported via a hinge pin 13 so that it can be opened and closed and detachable in the vertical direction (front-rear direction).

  In addition, a metal inner cover member 31 corresponding to the upper opening of the inner container 3 is fixed to the lower surface of the inner cover panel 12 in the lid body 2. A heat-resistant rubber seal packing 32 is provided that is pressed against the edge of the upper opening (water supply port) of the inner container 3 when the lid 2 is closed.

The steam passages 21a to 21g include steam introduction cylinders 29 fitted into lower openings of large-diameter steam pipes 12c and 12d, which are formed to stand upward at a substantially central portion of the inner cover panel 12, and steam The pipes 12 c and 12 d are formed by a bulging portion or the like on the lower side of the inner cover member 31, and communicate with each other in a detoured state from the lower side to the upper side of the lid body 2. Reference numeral 35 is a tipping water stop valve disposed on the steam outlet portion 21b side midway from the steam inlet 21a portion formed in the inner cover member 31 of the steam discharge passage 21a to 21g.

  A direct current type electric hot water pump 6 is provided at a position below the front side of the bottom 3a of the inner container 3 on the upstream end side of the hot water supply passage 5 via an inner container 3 side hot water introduction cylinder and a hot water pump side hot water inlet 5a. The hot water sucked through the hot water introduction cylinder and the hot water suction port 5a is discharged from the discharge port by the pumping action of the electric hot water supply pump 6, and the starting end side pipe portion of the hot water supply passage 5 is provided. 5b is led to the hot water pouring outlet 5c from the fall-off water valve 34 side connecting pipe to the outside.

(Configuration of the upper part of the lid)
By the way, the upper part of the lid body 2 composed of the lid panel body 11 and the exterior member 14 is configured as shown in FIGS.

  That is, first, the synthetic resin lid panel main body 11 serving as the base of the lid body 2 has a size and shape corresponding to the upper end side opening surface excluding the flange 33 portion on the pot main body 1 side. A hinge portion (hinge lever portion) 11c is integrally formed. The hinge portion 11c is formed in a U-shaped cross section in the vertical direction, and fitting insertion holes 24a, 24a for the pot body 1 side hinge shaft 13 are provided between the left and right side wall portions 24, 24 thereof.

  A concave portion 11a having a predetermined width extending from the front end 17 side to the rear end hinge portion 11c side is formed at the central portion in the left-right direction of the lid panel main body 11, and the concave portion 11a is formed with respect to the concave portion 11a. The exterior member 14 made of a synthetic resin having a size and a shape corresponding to the above is fitted and fixed via the connecting members 22, 22... And the connecting holes 23, 23. It has become.

  When the exterior member 14 is fitted into the concave portion 11a of the lid panel body 11, the exterior panel 14 is continuous with the convex panel portions 11b and 11b that are convex upward on the left and right sides of the lid panel body 11. Are formed in such a shape and structure as to be able to form a substantially identical surface or a slightly higher convex surface than the convex panel portions 11b, 11b, and on the left and right sides thereof, the bottom of the lid panel body 11 side concave portion 11a Side wall portions 14a of a vertical wall structure extending in a mountain shape (bow shape) in the front-rear direction and fitted in and fixed to recessed grooves 16, 16 extending in a mountain shape (bow shape) in the front-rear direction. 14a is provided extending downward. The exterior member 14 is fixed to the lid panel by fitting and fixing the side wall portions 14a and 14a of the vertical wall structure (the width in the vertical direction is wide at both front and rear ends) into the concave groove portions 16 and 16 of the concave portion 11a. It is securely fitted and integrated with the concave portion 11a of the main body 11, and has high strength against twisting and deformation between the concave portion 11a of the lid panel main body 11 as shown in FIGS. A closed cross-sectional structure with high is realized.

  That is, in the configuration of the present embodiment, first, the lid panel main body 11 is provided with the concave portion 11a extending in the longitudinal direction from the front end portion 17 to the hinge portion 11c at the rear end portion, and the concave groove portions 16 and 16 in the concave portion 11a. Are formed by changing the height position in the vertical direction, so that the two vertical wall portions by the formation of the recesses 11a and the recesses in the inner bottom of the recesses 11a are formed in the left-right width direction of the elliptical lid panel body 11 that is long in the front-rear direction. The rigidity and deformation strength in the front-rear torsional direction are greatly improved by the synergistic effect of the two vertical wall portions formed by the groove portions 16 and 16, the step portions formed between the respective vertical wall portions and steps having mutual steps, and the combination thereof. To up.

  In addition, in the above configuration, side walls 14a and 14a having a vertical wall structure extending in an arch shape in the front-rear direction are further provided on the left and right sides with respect to the concave portion 11a and the concave groove portions 16 and 16 of the lid panel body 11 having the same structure. The exterior member 14 having a generally curved shape but a generally box shape is fitted and integrated through the side wall portions 14a and 14a.

  Accordingly, the addition of the exterior member 14 results in a box-shaped double wall structure at the center of the lid panel, and two additional vertical wall portions are added by the side wall portions 14a, 14a. Will be further improved.

  Therefore, the lid panel is less likely to be deformed when the internal pressure is increased by hot water stirring when the electric pot falls.

  In addition, the exterior member 14 can be arbitrarily colored, and can be made to have a color that contrasts with the convex left and right convex panel portions 11b and 11b of the lid panel body 11, and the degree of freedom in design. Is greatly improved.

  Further, in this case, as is apparent from FIGS. 4 and 9, for example, the concave groove portions 16 and 16 are provided at positions shifted inward by a predetermined dimension d from the left and right side wall surfaces 11d and 11d of the concave portion 11a. On the other hand, the side wall portions 14a and 14a on the exterior member 14 side are also displaced inward by a predetermined dimension d from both side outer peripheral ends 14d and 14d correspondingly, and the wall thickness e is concave. The groove portions 16 and 16 are formed smaller than the width f by a predetermined dimension g.

  Therefore, when the exterior member 14 is fitted into the recess 11a of the lid panel main body 11, the outer peripheral ends 14d and 14d of the left and right sides of the exterior member 14 and the lower surface thereof, and the outer surfaces of the side wall portions 14a and 14a and the lower surface thereof. As shown in FIG. 9, the four surfaces are in contact with the left and right wall surfaces 11 d and 11 d of the lid panel body 11 side recess 11 a and the bottom surface thereof, and the outer surfaces of the recessed groove portions 16 and 16 and the four surfaces of the bottom surface without gaps. In addition, a heat insulating space a extending in the vertical direction is formed between the inner side surfaces of the side wall portions 14 a and 14 a of the exterior member 14 and the inner side surfaces of the recessed groove portions 16 and 16.

  Therefore, the fitting state between the exterior member 14 and the lid panel body 11 is reliable and stable, and the sealing performance is also improved. Moreover, heat insulation is also improved.

  Further, in the configuration of the present embodiment, for example, as shown in FIG. 6, a lid opening / closing lever 19 is attached so as to be sandwiched vertically between the exterior member 14 and the lid panel body 11.

  That is, in the center near the front end portion 17 of the lid panel main body 11, as shown in FIGS. 3 and 5, for example, a first opening 18 for rotatably installing the lid opening / closing lever 19 is also provided on the exterior member 14. In the center of the vicinity of the front end portion 14c, second openings 15 for forming the lid opening / closing lever 19 so as to be externally operated as shown in FIG. 1 are formed, respectively. And the first vertical ribs 41, 41 having U-shaped support shaft receiving portions 41a, 41a for receiving the rotation support shaft 20 of the lid opening / closing lever 19 provided by integral molding on the lower side. Rotating support shafts 20, 20 provided on both sides of the lid opening / closing lever 19 between the second vertical ribs 42, 42 having inverted U-shaped support shaft pressing portions 42 a, 42 a that can hold the cover from above. It is designed to be securely fixed so that it can rotate. .

  With this configuration, there is no need to provide a conventional boundary rib around the lid opening / closing lever 19, and there is no step around the lid opening / closing lever 19. Operability and maintainability are improved.

  In the above configuration, the exterior member 14 (or the recess 10) is provided from the front end 17 side lid opening / closing lever 19 installation portion to the rear end side hinge portion 11c of the lid panel body 11 (lid body 2). Yes.

  According to such a structure, the rear end part of the exterior member 14 can be formed in the hinge cover part 14b, and the hinge cover as another member like the past can be eliminated.

  Furthermore, in the above configuration, as is apparent from FIGS. 7 and 8, for example, the concave portion 11a is provided between the lid panel body 11 (the concave portion 10 surface) and the exterior member 14 (the convex portion surface) of the lid body 2. A heat insulating space (heat insulating air layer) A corresponding to the width W of the steam passages 21a to 21g of the lid 2 (wider than the width W) is provided using the step (depth). Moreover, a similar heat insulating space (heat insulating air layer) a is continuous with each other in the form extending vertically between the side wall portions 14a, 14a of the exterior member 14 and the inner side surfaces of the recessed groove portions 16, 16 as described above. Is formed.

  Therefore, according to such a structure, especially the circumference | surroundings of the vapor | steam passages 21a-21g of the cover body 2 where heat | fever escapes easily can be covered, the heat radiation amount to the exterior from the part is cut effectively, and heat retention performance is effective. Will improve.

  As a result, according to the above structure, the problems of the conventional electric pot can be surely substantially solved.

(Modification)
9 is a modification of FIG. 7, and the engagement claws 40, 40... As shown in the figure are formed on the front and rear ends and the center of the side wall portions 14a, 14a of the exterior member 14, while Engagement ports 40a and 40a are provided at the bottoms of the corresponding concave groove portions 16 and 16 for engagement.

  With such a configuration, the connection members 22, 22... And the connection holes 23, 23... Described above are not necessary for the connection between the exterior member 14 and the lid panel body 11.

It is the perspective view seen from the oblique line back of the electric pot which concerns on each best embodiment of this invention. It is the center longitudinal cross-sectional view cut | disconnected in the front-back direction in the horizontal direction center part of the same electric pot. It is a disassembled perspective view of the cover body part seen from the oblique line upper part of the electric pot. FIG. 4 is a cross-sectional view taken along line AA in FIG. 3 of the electric pot. It is a disassembled perspective view of the cover body part seen from the oblique line lower part of the electric pot. It is an expanded sectional view of the opening-and-closing lever part of the lid front part of the electric pot. It is the center longitudinal cross-sectional view cut | disconnected in the left-right direction in the front-back direction center part of the same electric pot upper part. It is sectional drawing which expands and shows the fitting structure of the exterior member fitting part of the same electric pot (In this figure, in order to make it intelligible, hatching is dared and shown.). It is the center longitudinal cross-sectional view cut | disconnected in the left-right direction in the front-back direction center part of the cover part in the modification of the same electric pot.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 is a pot main body, 2 is a lid body, 3 is an inner container, 4A is a hot water heater, 4B is a heat insulation heater, 6 is an electric hot water supply pump, 7 is an outer case, 9 is a bottom member, 11 is a lid panel main body, 11a is a recess 11b is a convex panel part on both the left and right sides of the lid panel body, 11c is a rear end hinge part on the lid panel body, 14 is an exterior member, 14a is a vertical wall part on both the left and right sides, 14b is a hinge cover part, 15 is A lid opening / closing lever fitting opening, 16 is a concave groove, and 20 is an opening / closing lever pivot.

Claims (3)

And an electric kettle body having an inner container and a heater, and a lid attached to an upper portion of the electric kettle body to open and close the opening of the inner container top, the electric kettle body upper portion of the front-side hot-water supply passage and the closure An electric pot in which a water stop valve is provided in each of the steam passages on the rear side of the body, wherein the lid body is fitted and integrated with a lid panel body provided with a recess on the upper surface side. It comprises an exterior member that forms a closed cross-section structure with the concave portion, and an inner cover panel that is attached to the back side of the lid panel body and forms a steam passage, and further includes a groove portion in the concave portion of the lid panel body. An electric pot characterized in that a vertical wall provided on the exterior member side is fitted and fixed . An electric pot comprising an electric pot main body having an inner container and a heater, and a lid attached to the upper part of the electric pot main body so as to open and close the opening of the upper part of the inner container, wherein the lid is an upper surface A lid panel body provided with a recess on the side; an exterior member that is fitted and integrated with the recess to form a closed cross-sectional structure; and a vapor passage that is attached to the back side of the lid panel body And a lid opening / closing lever is pivotally attached between the exterior member and the lid panel body via a pivot shaft provided on the lid panel body side. And electric pot. An electric pot comprising an electric pot main body having an inner container and a heater, and a lid attached to the upper part of the electric pot main body so as to open and close the opening of the upper part of the inner container, wherein the lid is an upper surface A lid panel body provided with a recess on the side, an exterior member that is fitted and integrated with the recess and forms a closed cross-sectional structure with the recess, and is attached to the back side of the lid panel body, and a steam passage The exterior cover is provided from the front end side opening / closing lever portion of the lid body to the rear end side hinge portion, and the rear end portion is formed on the hinge cover. Electric pot to be.

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