JPH0331235Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to the installation of a temperature controller in an electric pot.

<Conventional technology> Conventionally, electric pots have a cylindrical inner container with a bottom.
A draining member is coupled to the upper end of the outer case surrounding the inner container, a bottom member is coupled to the lower end, a lid body that can be opened and closed is provided at the upper end of the draining member, and the liquid in the inner container is heated around the lower outer periphery of the inner container. A heating element such as a band heater is installed, and a board is spot welded to the center of the lower surface of the bottom of the inner container, and a mounting bracket with a circular guide hole is also spot welded to the board. A thermos that is disc-shaped and has a plate-shaped main body and a disc-shaped temperature sensing part with a diameter slightly larger than the main body at the bottom of the main body, and that senses the temperature inside the inner container and controls the energization to the heating element. A temperature controller such as a thermostat and an elongated cylindrical temperature fuse is provided, a holding metal fitting for the thermostat and a holding fitting for the temperature fuse are respectively provided, and the thermostat is loaded into the guide hole of the mounting fitting, and the holding metal fitting is installed from the top surface. At the same time, press the temperature fuse with the holding metal fitting for the temperature fuse, fix the holding metal fitting to the board with screws, and install the temperature fuse. However, in this type of electric pot, the thermostat and temperature fuse of the temperature regulator were each attached separately to the bottom of the inner container, which resulted in a large number of parts and a complex structure, making assembly extremely complicated. It was becoming.

<Purpose of the invention> The present invention was made in view of the above points, and is an inexpensive electric pot with a very small number of parts, a simple structure, easy assembly, and a large cost. is to provide.

<Structure of the invention> According to the invention, the presser metal fitting is formed into a flat plate shape,
Two notches are provided inward from the tip of one side of a flat plate, and a central bent piece is bent downward between the center notches, and a letter-shaped bent piece is made by bending both outer ends of the notch into a letter shape. At the same time, a substantially arc-shaped cutout hole is provided inward from the tip of the other side, and a temperature fuse is sandwiched between the central bent piece and the letter-shaped bent piece of the holding fitting, and the temperature of the thermostat is adjusted. The upper circumferential edge of the sensing part is held in contact with the lower end of the circumferential wall forming the arc-shaped part of the notch hole, and the holding metal fitting is attached to the board, the center of the holding metal fitting is fixed to the board, and the inner container is inserted through the holding metal fitting. The purpose is to be achieved simply by having a temperature fuse and a thermostat pressed and locked on both the left and right sides of the bottom board.

<Example of idea> Embodiments of the present invention will be described below with reference to the drawings.

The electric pot 1 includes an inner container 3 surrounded by an outer case 2, and a drainage member 4 connected to the upper end of the outer case.
and an upper lid case 6 containing a built-in bellows pump 5.
, a discharge mechanism 7 that discharges the liquid in the inner container, a heating element 8 that heats and keeps the liquid in the inner container warm, and a temperature regulator that senses the temperature of the liquid in the inner container and turns the heating element on and off. 9, and a bottom member 1 that covers the bottom of the inner container.
It is composed of 2.

The outer case 2 is formed of a thin iron plate into a cylindrical shape, the upper end of which is bent inward and upward into a stepped shape, and the lower end of which is bent inward into a cylindrical shape to provide a gap between it and 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 inner container 3 has a lower opening for dispensing liquid in the lower part of the front wall, and a short cylindrical lower pipe made of a metal material such as stainless steel is welded to this lower opening. The flange of the inner container is covered with a heat-resistant and corrosion-resistant seal packing, and is closely joined to the upper surface of a peripheral wall that forms a central opening of a receiving portion of a draining member, which will be described later. The inner container has a substrate 10 spot welded to the bottom outer wall.

As shown in FIG. 3, the base plate 10 is spaced from the bottom of the inner container by a predetermined distance, and mounting angles 11 are screwed to both ends of the base plate 10, respectively.

The draining member 4 has a receiving part with a central opening in the center that communicates with the wide mouth of the inner container, a hinge part that hinges the upper lid case (described later) at the rear end of the receiving part, and a discharge pipe (described later) placed in front of the receiving part. It is connected to the beak. The opening of the receiving portion of the draining member supports the flange of the inner container from the lower surface of the flange through a seal packing. The flange of the draining member is provided with locking pieces for locking claws on the left and right sides for locking the locking device of the upper lid case, which will be described later.

The upper lid case 6 is swingably supported by a hinge member, and is attached to a draining member by a locking device 13 so as to be openable and closable, and includes a bellows pump 5, a spring 14 pushing up the bellows pump, and a bellows pump. a push valve 15 for opening and closing the upper opening of the
It has a built-in press operation member 16 that presses this push valve and force-feeds the air in the bellows pump into the inner container.The lower surface is covered with a lower lid 17, and an inner lid 18 is detachably attached to the lower part of the lower lid. are doing. Top lid case 6
is formed hollow inside, and has an elongated hole in its front upper surface through which a free end of an operating lever (to be described later) projects, and a steam vent 26 in its rear upper surface.

The bellows pump 5 is formed of a bellows part, and thick upper and lower plates at the upper and lower ends of the bellows part, with an opening for air supply provided in the center of the upper plate part, and an opening for air supply in the center of the bellows part. A hollow cylinder for air exhaust is provided in the center.

The push valve 15 is made up of an upper flat plate part and a plurality of claws which are vertically disposed below the lower surface of the flat plate part and whose tips abut against the lower surface of the peripheral wall forming the central opening of the upper plate part of the bellows pump 5. It is molded.

The spring 14 has its lower end in contact with the upper surface of the lower plate inside the bellows pump, and its upper end in contact with the inner side of the claw on the lower surface of the flat plate of the push valve.

The pressing operation member 16 includes a pressing lever 19 that presses the push valve, a pressing lever mounting member that locks the pressing lever, an operating lever 21, a transmission pin that transmits the vertical movement of the operating lever to the pressing lever, and a transmission pin that transmits the vertical movement of the operating lever to the pressing lever. It consists of a stopper member 23 that restricts the movement.

The push lever 19 is formed into a substantially thick plate shape and has shaft pins protruding from the left and right sides of the rear end, one end that contacts the push valve is a free end, and the other end is connected to the push lever mounting member via the shaft pin. It is centrally supported by

The operating lever 21 is formed in a substantially inverted L shape extending from the back to the upper surface, and has an insertion hole in which the upper surface integrates a through hole into which the pressing lever can be inserted and a through hole through which the pressing lever engagement piece described below passes. is installed. The operating lever 21 has pivot pins protruding from the lower left and right sides of the back surface, respectively, which pivot between the engaging portions of the lower lid, which will be described later. The operating lever has its rear end pivoted to the lower lid via a pivot pin, and its tip is a free end that projects upwardly from the front through a long hole in the upper lid case, allowing it to move up and down.

The transmission pin passes through and is fixed to the lower end of the side wall of the operation lever 21, and is always in contact with the upper surface of the pressing lever 19.

The pressure lever mounting member includes a flat plate part with a small hole that covers the steam vent of the upper lid case, and two locking claws that hang down from the front and rear ends of the lower surface of the flat plate part and lock on the inside of the upper surface of the upper lid case. , and press lever engaging pieces that hang downward from the left and right ends of the lower surface of the flat plate portion and engage the shaft pins of the press lever, respectively, are integrally molded.

The press lever engaging piece has a long groove formed diagonally downward from the front to the rear, and each shaft pin of the press lever is fitted and pivotally supported in the long groove downwardly.

The press lever mounting member passes through the locking pawl and the press lever engagement piece from the upper end of the steam vent of the upper lid case,
With the long groove of the press lever engagement piece facing forward and the flat plate portion installed on the top surface of the steam vent, the locking pawl is locked on the inside of the top surface of the upper lid case.

The outer periphery of the lower lid 17 fits into the inner periphery of the lower end of the upper lid case, and is formed in the shape of a step descending toward the center, and has symmetrical left and right engaging portions that protrude upward on the rear upper surface. , an opening for air exhaust is drilled in the center via a rubber push.

The engaging portions each have a longitudinal groove into which the pivot pin of the operating lever is inserted from above and engages with the engaging portion in a loose manner.

The inner lid 18, which opens and closes the opening of the inner container, is formed of a metal material such as stainless steel and has a substantially disc shape, and is opened at the center, and with this center opening aligned with the center opening of the lower lid 17, A rubber push-piece is fitted inside this central opening.

The discharge mechanism 7 includes a lift pipe 36 that also serves as a liquid level display tube, a first holder 37 that connects the lift pipe and the lower pipe of the inner container, and a discharge pipe that discharges the liquid in the inner container to an external receiver or the like. 38, and a second holder 39 that connects the discharge pipe and the pumping pipe.
and a cover body 40 that covers the front surface of the pumping pipe. The pumping pipe 36 is formed into a vertically elongated hollow tube made of transparent glass material, and the liquid level in the inner container is displayed at the liquid level indicated in the pumping pipe, and can be visually checked from the front of the cover body. It is possible.

The heating element 8 is stretched around the bottom outer periphery of the inner container by means of a band heater.

The temperature regulator 9 is an elongated cylindrical temperature fuse 2.
7, a cylindrical thermostat 28, and a presser fitting 29 for locking the temperature fuse and thermostat.
It is made up of.

As shown in FIG. 3, the cylindrical thermostat 28 has a cylindrical temperature sensing section 30 at the bottom, a contact inside which is opened and closed by reversing a disc-shaped bimetal, and a temperature sensing section at the top. A terminal connection part 31 having a diameter smaller than that of 30 is provided, and has a pair of terminals at its upper end electrically connected to contacts in the temperature sensing part.

The presser metal fitting 29 is formed of thin metal into a flat plate shape, and as shown in Figs. A central bent piece 32 is provided with a notch and is bent downward between the central notches, and two letter-shaped bent pieces 3 are formed by bending both outer ends of the notch into a letter shape.
3 and 33 are provided, and a substantially arc-shaped notch hole 34 is provided toward the inner side from the tip of the rear wall on the other side, and the central portion is made bulky, and a screw hole 35 is bored in the central portion. The notch hole 34 of this presser fitting is formed to have a diameter larger than the diameter of the terminal connection part and smaller than the diameter of the temperature sensing part.

When installing the temperature fuse 27 and thermostat 28 of the temperature regulator, first sandwich the temperature fuse 27 between the center bent piece 32 of the holding fitting 29 and the letter-shaped bent pieces 33, and then attach the thermostat 28. The upper peripheral end of the temperature sensing section 30 is brought into contact with the lower end of the peripheral wall forming the notch hole 34, and the presser metal fitting 29, which holds the temperature fuse 27 and the thermostat 28, is fixed to the board 10 with screws 41. A temperature fuse 27 and a thermostat 28 are press-locked to the bottom of the inner container at the front and rear, respectively.

The bottom member 12 includes a ring-shaped bottom ring 43 that contacts the lower end of the outer case, and a bottom plate 4 that closes the opening of the bottom ring.
It consists of 2.

The bottom plate 42 is formed into a disk shape, and its outer periphery is in contact with the bottom ring, and the mounting angle 1 of the inner container is fixed with screws.
1 to tighten the inner container and outer case between the bottom ring and the drainage member.

<Effects of the invention> In the present invention, by simply inserting the temperature fuse between the two "shaped bent pieces" and the center bent piece of the presser metal fitting, the border between the main body of the thermostat and the temperature sensing section can be The temperature fuse and thermostat can be clamped at the same time by simply inserting the outer peripheral edge of the clamp into the notch hole from below. Moreover, the clamping state before fixing the presser metal fitting to the board is easy and work is extremely easy. Also, since the holding bracket can be fixed to the board with the temperature fuse and thermostat clamped, there is no need to attach the temperature fuse and thermostat with separate holding fittings, and the structure is simple with fewer parts. Installation is very easy and assembly work is carried out smoothly.

Furthermore, the center of the presser fitting is fixed to the board, and the temperature fuse and thermostat can be pressed on both the left and right sides by sandwiching this board, so the narrow space at the bottom of the inner container can be used effectively, and the temperature fuse and thermostat can be pressed on both sides.
The thermostat can be securely locked at the same time, especially when the thermostat is securely in contact with the bottom of the inner container.
It can be operated effectively. Further, since the presser metal fitting is not directly attached to the bottom of the inner container, the thin inner container can be used satisfactorily without damaging the bottom of the inner container.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of an embodiment of the present invention, Fig. 2 is a perspective view showing a partially installed state of the embodiment of the present invention, and Fig. 3 is a longitudinal sectional view of an embodiment of the present invention.
The figure is an exploded perspective view showing the main parts of the present invention. 1...Electric pot, 2...Exterior case, 3...
Inner container, 4...Draining member, 8...Heating element, 9...
Temperature controller, 10... Board, 11... Mounting angle, 12... Bottom member, 29... Presser fitting, 32
...Central folded piece, 33..."Character-shaped folded piece, 34...Notched hole.

Claims (1)

[Scope of utility model registration request] A heating element that heats the liquid in the inner container is attached to the outer circumference of the lower part of the inner container, and a substrate that divides the bottom symmetrically is spot-welded to the center of the bottom of the inner container, and a disc-shaped main body and a lower part of the main body are attached to each other. A disc-shaped thermostat equipped with a disc-shaped temperature sensing part with a diameter slightly larger than the main body, which senses the temperature inside the inner container and controls the energization of the heating element, and a long, slender cylindrical temperature fuse. In an electric pot, in which a thermostat and a temperature fuse are fixed to the bottom of the inner container around the circuit board through holding metal fittings, the holding metal fittings are formed into a flat plate shape, and the holding metal fittings are formed into a flat plate shape, and the inner side of the tip of one side of the flat plate shape is formed. Two notches are provided toward the center, and a central bent piece is bent downward between the center notches, and a letter-shaped bent piece is provided with both outer ends of the notch bent into a letter shape. A substantially arc-shaped cutout hole is provided inward, and a temperature fuse is sandwiched between the central bent piece and the letter-shaped bent piece of the holding fitting.
The upper circumferential edge of the temperature sensing part of the thermostat is held in contact with the lower edge of the circumferential wall forming the arc-shaped part of the notch hole, and the center of the holding metal fitting is fixed to the substrate, and the substrate at the bottom of the inner container is held through the holding metal fitting. An electric pot characterized by a temperature fuse and a thermostat that are pressed into place on both the left and right sides.