JPH0451724Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an electric pot that heats a liquid in an inner container using a heater.

<Prior art> Conventionally, an electric pot has a bottomed cylindrical inner container made of stainless steel, and a roughly D-shaped inward recessed part is provided in the center of the bottom wall of the inner container. Multiple angles for mounting the temperature controller are welded to approximately the center of the recessed part of the back plate, which fixes the heater around this recessed part, and a mounting angle for the bottom plate of the bottom plate that covers the bottom of the inner container. The angle and the insulator mounting angle of the insulator, which is equipped with a terminal fitting for connecting the lead wires, were each welded, and the approximately D-shaped recess at the bottom of the inner container was in contact with the bottom wall of the inner container, and the center was cut out. A flat heater is provided, a heat insulating material with a cutout in the center is provided covering the heater, a back plate is provided with a cut out in the center covering the heat insulating material, and the back plate is attached to a mounting angle for the back board at the bottom of the inner container. The heater and heat insulating material are fixed to the recessed part at the bottom of the inner container via the back plate, while the temperature inside the inner container is sensed through the notch in the center of the heater, heat insulating material and back plate. Insert the temperature regulator that controls the power supply to the heater, fix it with the temperature regulator mounting angle, fix the insulator with the insulator mounting angle, and attach the bottom plate mounting bracket with the bottom plate mounting angle. By joining the shoulder member to the upper end of the outer case surrounding the container, joining the bottom ring of the bottom member consisting of a bottom ring and a bottom plate to the lower end, and fixing the bottom plate to the bottom plate mounting bracket, the bottom member, the inner container, In addition to fixing the shoulder member and the outer case, a lid body that can be opened and closed is provided on the upper end of the shoulder member, and a heater heats the liquid in the inner container, but in this type of electric pot, a back plate is installed at the bottom of the inner container. Separate angles are provided for the mains, temperature regulator, insulator, and bottom plate, and the back plate, temperature regulator, insulator, and bottom plate must be attached to each angle in sequence, making the structure extremely complex. Moreover, the number of parts is large, the installation work is complicated, the number of assembly steps is large, the work efficiency is low, and the cost is significantly high.

<Purpose of the invention> The present invention was devised in view of the above points, and has an extremely simple structure, a small number of parts, easy assembly work, high work efficiency, and a large cost reduction. There is an electric kettle provided.

<Structure of the invention> According to the invention, mounting brackets for the bottom plate are attached to at least both diagonal angles of the plurality of angles at the bottom of the inner container, and mounting covers for the insulator and temperature controller are attached to the other angles of the back plate. The objective is to be achieved simply by tightening and fixing the flange piece together with screws.

<Embodiments of the invention> Hereinafter, embodiments of the invention will be described based on drawings of an electric pot using pneumatic pressure.

The electric pot 1 includes an inner container 3 surrounded by an outer case 2, and a shoulder member 4 connected to the upper end of the outer case 2.
, a lid body 6 incorporating a bellows pump 5, a discharge mechanism 7 for discharging the liquid in the inner container, a heater 8 for heating the liquid in the inner container, and sensing the temperature of the liquid in the inner container or the atmospheric air. and turn on the heater,
It consists of a temperature regulator 9 that turns off, and a bottom member 10 that covers the bottom inside the inner container.

The inner container 3 is formed of a metal material such as stainless steel into a cylindrical shape with a bottom, and has a wide mouth at the upper end, and a flange that expands outward is provided at the tip of the wide mouth. The flange portion of the inner container 3 is tightly joined to the lower surface of a peripheral wall forming a central opening of a receiving portion of a shoulder member 4, which will be described later, via a packing. As shown in FIG. 2, the inner container 3 has a peripheral edge part 11 on the bottom outer wall, and a central part 12 slightly higher than the peripheral edge part is provided in the center surrounded by the peripheral edge part. A lower opening for pouring out liquid is formed in the front peripheral end 11 of the inner container 3, and a lower pipe 13 formed in a short cylindrical shape made of a metal material such as stainless steel is welded to this lower opening. Peripheral end 11 of inner container 3
are four square-shaped angles 14, 14 spaced apart from each other at a predetermined interval so as not to contact the lower pipe 13.
are spot welded.

The exterior case 2 is made by rolling a thin metal plate, then folding the ends to form a substantially cylindrical shape, and folding the upper end of this cylindrical shape inward into steps.
Curl the bottom edge inward. This cylindrical exterior case 2 has a cutout on the front side, and a transparent plate is fitted into the cutout part, so that a liquid volume display tube of a discharge mechanism 7, which will be described later, can be visually observed through the transparent plate.

The shoulder member 4 is made of synthetic resin material and has an inner container 3 in the center.
An annular receiving portion 15 with an opening communicating with the wide opening of the
A hinge part 16 that hinges a lid body (described later) at the rear end of this receiving part, and a beak part 17 in front of this receiving part are integrally molded. The receiving portion 15 of the shoulder member 4 is provided with an annular flange portion on the peripheral wall forming the central opening, which abuts the flange portion of the inner container 3 from above via a packing. The beak 17 of the shoulder member 4 is once suspended above the front of the receiving part 15 and then hangs downward, forming an internal cavity upwardly inward from the bottom of the beak 17.

The tip of the free bottom surface of the beak 17 of the shoulder member is fixed to the inner wall of the lower end of the beak, and the rear end is attached to the decorative member 18 which is in contact with the lower end of the outer wall of the front part of the receiving part of the shoulder member at the upper end of the outer case. It is covered with This decorative member 18
A discharge pipe through hole 19 is bored through the tip of a discharge pipe (to be described later) hanging diagonally from the inside of the beak 17, and a front locking piece is attached to the tip to be hooked to the inner wall of the lower end of the beak 17. A plurality of rear locking pieces are provided at the rear end of the R shape of the front part of the outer case to be locked to the inner wall of the lower end of the front part of the receiving part 15 of the shoulder member at the front part of the upper end of the outer case 2. . The beak 17 of the shoulder member 4 has through holes equal to two pilot lamps for boiling water and heat-retaining pilot lamps at the top and bottom of the center of the front wall, and the tip of a lamp holding plate, which will be described later, is formed on the upper inner wall of the through holes. A groove for the retainer plate is provided to fit the retainer plate.

The lamp holding plate is made of a synthetic resin material and is formed into an elongated flat plate, with two upper and lower lamp grooves provided in the center of the flat plate, and an upper engaging plate that fits into the holding plate groove of the beak 17 at the tip. A stopper is provided, and a beak 17 is provided at the rear end.
A lower locking piece that is fixed to the lower end of the front wall is integrally molded. Reference numeral 20 denotes a lamp cover that is inserted from the outside toward the through hole of the beak portion 17 and is locked to the inner wall forming the through hole.

To install the pilot lamps, fit each pilot lamp into the lamp groove of the lamp holding plate, fit the upper locking piece of the lamp holding plate into the holding plate groove of the beak 17, and then attach the two pilot lamps. Insert the tip of the lamp into the through hole from the inside of the beak part 17 and contact the back surfaces of the lamp covers 20 and 20, respectively, and then screw the lower locking piece of the lamp holding plate to the lower end of the front wall of the beak part with a screw. are doing. Shoulder member 4
The beak portion 17 has a locking groove for a locking pawl for locking a locking device of the lid, which will be described later, on the side of the receiving portion that is vertically disposed above the front of the receiving portion 15.

The lid body 6 is swingably supported on the hinge portion 16 of the shoulder member 4, and is attached to the upper surface of the shoulder member so as to be openable and closable by a locking device, which will be described later. 21, and a push valve 2 that opens and closes the upper opening of the bellows pump.
2, an upper lid 24 incorporating a pushing body 23 that presses the push valve and force-feeds the air in the bellows pump into the inner container, and a lower lid 25 that covers the lower surface of the upper lid.
It consists of a rubber bush 26 fitted into the central opening of the lower lid 25, a cover plate 27 covering the lower surface of the lower lid, and a locking device 28 for locking the lid 6 to the shoulder member 4.

29 is a stopper member that restricts the vertical movement of the pushing body 23.

The upper lid 24 is made of a synthetic resin material and is approximately the same size as the mouth of the inner container 3, except for the rear part hinged to the hinge part of the shoulder member, and has an opening cylindrical part in the center that extends downwardly and passes through the upper and lower sides. ing. The upper cover 24 has a vertically elongated hole in the center of the front part for sliding an operating knob to operate a locking device, which will be described later, and between this elongated hole and the open cylindrical part restricts the vertical movement of the pusher 23 inside the open cylindrical part. A horizontally long hole for sliding the stopper member is provided.

The bellows pump 5 is provided with a bellows part, an air exhaust cylinder part communicating with the bellows part is provided at the lower center end of the bellows part, and an upper end plate is welded to the upper end of the bellows part with an opening in the center serving as an air supply port. There is. bellows pump 5
An annular protrusion is provided on the outer circumferential wall of the air exhaust cylinder to be fitted into and locked inside a rubber bushing, which will be described later. The push valve 22 has an upper flat plate portion and a plurality of claws that are vertically disposed below the lower surface of the flat plate portion and have their tips abutted against the lower surface of the peripheral wall forming the air supply port of the upper end plate of the bellows pump 5. It is integrally molded.

The spring 21 has its lower end in contact with the inner surface of the lower end inside the bellows pump 5, and its upper end in contact with the flat lower surface of the push valve 22 and the inner side of the claw, thereby inflating the bellows pump 5 at all times.

The pushing body 23 is formed in a cylindrical shape with a flange on the outer periphery of the lower end, and the upper part of the flange is vertically slidable inside the open cylindrical part of the upper lid 24, and the flange of this pushing body comes into contact with the lower end of the open cylindrical part. It touches and restricts upward jump.

The lower lid 25 is formed in the shape of a saucer having an outer wall and a bottom wall, and the upper end of the outer wall fits into the outer periphery of the lower end of the upper lid 24, and the air exhaust cylinder part of the bellows pump 5 is located in the center of the bottom wall. A central opening that penetrates vertically and communicates with each other is bored, and three
~4 bosses hang down. This lower lid 25 is provided with an annular short side wall extending upward at the outer peripheral end of the bottom wall, and a flat plate portion extending from the short side wall toward the outer wall, and this flat plate portion is provided between the bottom wall and the annular short side wall extending upward. Steps are formed through the short side walls.

A small annular rib is suspended from the outer circumferential end of the flat plate portion, which corresponds to the outer wall of the flat plate portion, to restrict outward expansion of the seal packing described later. The front part of the lower lid 25 has an outer side wall that once extends upward, and its tip extends forward to cover the upper wall that forms the locking groove for the lock pawl of the beak 17 of the shoulder member 4. A wall is provided, and a hole for the lock pawl is bored in the front outer wall in correspondence with the locking groove for the lock pawl, and a lower wall forming the hole for the lock pawl is extended inward to form a hole as described below. A guide wall is provided to guide the lock body. The lower lid 25 has a flat plate portion at the rear lower part of the guide wall extending from the front outer wall.
A locking hole for a lock body abutment plate, which will be described later, is formed vertically through this flat plate portion.

The cover plate 27 is made of stainless steel and is formed into a dish shape that covers the bottom wall of the lower cover 25, and has an opening in the center that communicates with the central opening of the lower cover 25.
A through side wall is provided on the outer circumferential wall and extends upward and abuts against the short side wall of the lower lid 25, and an outer flange portion is integrally formed extending outward from the upper part of this annular side wall.

Reference numeral 30 denotes a seal gasket, which is stretched over the outer peripheral end of the cover plate 27, and includes a contact portion sandwiched between the upper surface of the peripheral end of the cover plate 27 and the flat plate portion of the lower lid 25, and an outer peripheral end of this contact portion. The inner container 3 extends downwardly in a curved manner.
An annular tongue piece that comes into contact with the flange of the inner container 3 to prevent the air inside the inner container 3 from leaking upward is integrally molded.

The rubber bushing 26 is made of an elastic material and has an annular groove bored in its outer wall, and is formed into a cylindrical shape with an F-shaped vertical cross section with a contact portion protruding downward. An inner annular groove is bored into which the annular protrusion of the cylinder part is fitted. This rubber button 2
The contact portion 6 has a length longer than the distance between the center opening of the lower lid 25 and the opening of the cover plate 27. This rubber bush 26 is constructed by fitting the peripheral wall forming the central opening of the lower lid 25 into an annular groove in the outer wall, and inserting the air exhaust cylinder of the bellows pump 5 into the inner wall.
With the annular protrusion of the air exhaust cylinder part fitted into the inner annular groove, screw a screw into the boss part of the lower cover 25 from below the cover plate 27, and connect the flat plate part of the lower cover 25 to the cover plate 27. Seal packing 30 between the outer flange part of
The abutting part of the rubber bushing 26 is tightly sandwiched between the bellows pump 5 and the cover plate 27, and the abutting part of the rubber bushing 26 is tightly abutted against the peripheral wall forming the center opening of the cover plate 27.
It communicates with the opening of.

The lock device 28 that allows the lid 6 to be opened and closed on the upper surface of the shoulder member 4 includes a lock body 31 with a lock pawl, an operation knob 32 that horizontally moves the lock body, and a lock that restricts the rearward movement of the lock body. It consists of a body support plate 33 and a lock spring 34 that constantly presses the lock body forward.

The lock body 31 has a central locking part for a spring in the center, two locking pawls extending forward to the left and right sides of this central locking part, and a predetermined space extending upward from the rear end of the locking pawl. An operation plate abutment part connected above and separated from the main body is integrally molded. Lock body 3
The two lock pawls 1 slide back and forth along the guide wall of the lower cover 25, pass through the lock pawl holes, and are locked in the lock pawl locking grooves of the beak 17 of the shoulder member.

The lock body abutment plate 33 is formed into a flat plate shape, and is provided with locking claws on the left and right sides of the lower end. This lock body abutting plate 33 has a locking pawl that passes through a locking hole for the lock body abutment plate of the lower cover 25, and the locking pawl is fixed in contact with the lower wall of the peripheral wall forming each of the locking holes. There is. The spring 34 for the lock body has one end in contact with the central locking portion of the lock body 31 and the other end in contact with the lock body abutting plate 33, so that the lock pawl of the lock body 31 is always kept in contact with the beak 17 of the shoulder member 4. It is locked in the locking groove for the lock pawl. The operation knob 32 has an operation plate that comes into contact with the operation plate abutment part of the lock body 31, and
4. An operating contact portion that contacts the inner circumferential wall that forms a long hole for sliding the operation knob and slides in the longitudinal direction, and a knob whose tip penetrates the long hole and protrudes from the top cover and is movable through the long hole. are integrally molded. When this operating knob 32 is pushed upward and backward along the longitudinal direction of the elongated hole in the top cover 24, the lock body 31 moves backward against the spring 34 until it comes into contact with the lock body abutment plate 33, and at the same time, the lock body 31 The locking claw of
The beak portion 17 of the shoulder member 4 is disengaged from the locking groove for the lock pawl, and the lid body is released from the receiving portion of the shoulder member. Next, when the lid body 6 is pressed toward the receiving part 15 of the shoulder member, the lock body is moved forward by the spring 34, and the locking pawl is engaged in the locking groove for the locking pawl, and at the same time, the operating knob 32 is pressed. It is slid and pushed downward and forward along the longitudinal direction of the elongated hole of the upper cover 24.

The discharge mechanism 7 includes a pumping pipe 35 that also serves as a liquid volume display pipe, and a U-shaped first holder 36 that connects the pumping pipe 35 and the lower pipe 13 of the inner container 3.
, a discharge pipe 37 that discharges the liquid in the inner container 3 to the outside, an upper valve cylinder 38 that is located between the discharge pipe and the pumping pipe 35 and forms a valve chamber, a lower valve cylinder 39, and a valve chamber that forms a valve chamber. The valve body 40 and the lower valve cylinder 39
and a second holder 41 that connects the upper end of the pumping pipe 35. The pumping pipe 35 is made of a transparent material such as glass and is formed into a vertically elongated hollow tube.
It is displayed at the liquid level position shown inside and is visible from the front of the outer case. The discharge pipe 37 is installed in the internal hollow of the beak 17 of the shoulder member 4, has a rear end communicating with the upper valve cylinder 38, and has a tip connected to the decorative member 18 covering the lower end of the beak 17 of the shoulder member 4. It penetrates the discharge pipe through hole and projects its discharge port diagonally forward of the beak portion 17.

The first holder 36 and the second holder 41 are formed into hollow tubes made of heat-resistant and corrosion-resistant elastic material. The first holder 36 is formed as a hollow tube with a substantially U-shaped vertical section, and has a small diameter portion of this U shape and a diameter increased by horizontally moving the fulcrum of the small diameter portion at one end of the small diameter portion. The lower pipe 13 and the pumping pipe 35 are connected by fitting the small diameter part into the lower pipe 13 of the inner container 3 having a small diameter and fitting the large diameter part into the pumping pipe 35 having a large diameter. .

A narrow passage is formed between the outer periphery of the valve body 40 in the valve chamber and the lower valve cylinder 39 by ribs in the radial direction. The liquid in the container is forced into the lower valve cylinder 39 via the lower pipe 13, the first holder 36, the pumping pipe 35, and the second holder 41, and is passed through the narrow passage formed by the ribs in the lower valve cylinder to the valve. It passes through the chamber and is discharged from the discharge port of the discharge pipe 37.

On the other hand, when the electric pot falls over, the valve body 40
moves inside the valve chamber and closes the valve chamber side opening of the upper valve cylinder 38, thereby preventing a large amount of liquid in the inner container from leaking from the discharge port.

As shown in FIG. 2, the heater 8 is formed into a substantially disk shape, and its front surface is in contact with the bottom central portion 12 of the inner container 3, and its back surface is in contact with the heat insulating material 42. The terminals of this heater 8 are connected to a plug holder which will be described later. The heat insulating material 42 is formed of glass fiber or the like into a substantially disk shape having the same size and shape as the heater, and its back surface is in contact with the back plate 43.

As shown in FIG. 2, the back plate 43 is made of a metal material and is formed into a substantially cylindrical shape having the same size and shape as the heater, and has a plurality of flange pieces 44, 44 protruding at predetermined intervals on the outer peripheral edge. It is set up. Each flange piece 44 of this back plate 43 is attached to each angle 14, 14 at the bottom of the inner container 3 with each screw, together with a mounting bracket for a bottom member, a mounting cover for a temperature controller, an insulator equipped with a terminal bracket, etc., which will be described later. Being stopped,
A heater 8 and a heat insulating material 42 are fixed.

The pair of bottom member mounting brackets 45, 45 are made of a thin metal material in the shape of an elongated flat plate, and the lower ends thereof are bent in opposite directions to form a square shape.
They are screwed together with the flange piece 44 of the back plate 43 to two angles 14, 14 located diagonally on the bottom of the inner container 3, with their upper ends facing inward.

The temperature regulator mounting cover 46 is formed by bending a thin metal material into a horizontal part 46a and a vertical part 46b.The vertical part 46b has a through hole 46c into which a thermostat of the temperature regulator, which will be described later, is inserted and locked.
is installed. Mounting cover 4 for this temperature controller
6 has the center of the horizontal part 46a fixed to one angle 14 of the bottom of the inner container 3 with a screw together with the flange piece 44 of the back plate 43, and the vertical part 46b is fixed to the bottom of the inner container 3.
It is attached almost perpendicularly to the rear side wall of the bottom, and a thermostat, which will be described later, is brought into close contact with the rear side wall of the inner container 3.

The insulator 47 is provided with a terminal fitting 47a for connecting a lead wire of a heater or the like, and is screwed together with a flange piece 44 of the back plate 43 to one angle 14 at the bottom of the inner container 3.

The temperature regulator 9 is a small cylindrical thermostat, and the temperature regulator mounting cover 46 is in close contact with the rear side wall of the inner container 3, and its terminal is connected to the insulator 4.
It is connected to a plug receiver, which will be described later, via a terminal fitting 47a of No.7.

The bottom member 10 includes a ring-shaped bottom ring 48 that comes into contact with the lower end of the exterior case 2, and a bottom plate 4 that closes the opening of the bottom ring.
It consists of 9. The bottom plate 49 is formed of a metal material into a thin disk shape, and its outer periphery abuts the bottom ring 48 and is screwed onto the bottom member mounting bracket 45 fixed to the angle 14 of the inner container 3 with bottom screws. , bottom ring 48
Inner container 3 and outer case 2 between and shoulder member 4
is being tightened. The bottom ring 48 is made of a synthetic resin material and includes a horizontal ring part and a vertical ring part of a side wall extending upward from the outer end of the horizontal ring part. A plug receiving locking portion is provided, which is made up of a part of the upper wall of the ring portion. This plug receptacle locking part has a plug hole bored on the vertical ring part side for inserting a plug (not shown) to be brought into contact with the surface of the plug receptacle 50, and plug receptacles are formed on both sides of this plug hole. 5
A pair of guide pieces each having a guide groove for inserting and guiding 0 from above is provided. The plug receiving locking portion is provided vertically upward on the horizontal ring portion inside both guide pieces, and has a plug receiving claw member at its tip extending toward the lower end on the vertical ring portion side. The distance between this plug-receiving claw member and the inner wall of the vertical ring portion is approximately equal to the width of the plug receiver 50, and the distance between the plug-receiving claw member and the upper wall of the horizontal ring portion is the height of the plug receiver 50. Both claws of the plug receiving claw member are engaged with the upper end plane of the plug receiver 50 inserted into the plug receiver locking portion.

The plug receiver 50 has a flat upper end,
Two terminal fittings (not shown) are provided on the surface to be connected to the plug 50 (not shown), and these two terminal fittings pass through the plug receiver and connect with the two lead wire mounting fittings to lock the plug receiver. It is inserted well upward into both guide pieces of the section with the surface facing the vertical ring section.

<Effects of the invention> In this invention, at the same time a back plate is attached to the angle at the bottom of the inner container, a mounting cover for the temperature controller,
Since the insulator and bottom plate mounting brackets are fastened together with the back plate, the structure is extremely simple.
In addition, the number of parts is small and assembly work is easy, improving work efficiency and reducing costs.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, and FIG. 2 is an exploded perspective view showing the main parts of the present invention. 1...Electric pot, 2...Exterior case, 3...
Inner container, 4... Shoulder member, 5... Bellows pump,
6... Lid body, 7... Discharge mechanism, 8... Heater,
9...Temperature controller, 10...Bottom member, 11...Peripheral end, 12...Central part, 13...Lower pipe, 1
4,14...Angle, 42...Insulating material, 43...
... Back plate, 44, 44 ... Flange piece, 45, 45
...Mounting bracket for bottom member, 46...Mounting cover for temperature controller, 47...Insulator, 47a...Terminal metal fitting.

Claims (1)

[Scope of utility model registration request] A cylindrical stainless steel inner container with a bottom is provided, multiple angles are welded to the bottom of the inner container, a heater is installed to heat the liquid in the inner container, and the heater is activated by sensing the temperature of the liquid in the inner container. A temperature regulator is provided to control the inner container, a shoulder member is provided at the upper end of the outer case surrounding the inner container, a bottom member is provided at the lower end, a lid body for opening and closing the mouth of the inner container is provided in the center of the shoulder member, and the bottom of the inner container is provided with a lid member for opening and closing the mouth of the inner container. The above-mentioned heater is stretched over the heater, a heat insulating material is provided to cover the bottom surface of the heater, a back plate is provided to cover the heat insulating material, a plurality of flange pieces are provided protruding from the peripheral edge of the back plate, and flange pieces are attached to the angle of the inner container. An insulator equipped with a terminal fitting that fixes the heater in contact with the bottom of the inner container and connects the lead wire to the angle of the inner container, a mounting bracket for the bottom member to which the bottom member is attached, and a temperature controller mounting cover to which the temperature controller is attached. In the electric pot to which the inner container is fixed, attach the bottom member mounting brackets to at least diagonal angles of the plurality of angles at the bottom of the inner container, and attach the insulator and temperature regulator mounting covers to the other angles, respectively, to the back plate. An electric pot characterized by being fixed together with a flange piece using screws.