JPS5823300Y2 - boiler - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a boiler with an improved attachment structure of the bottom plate to the outer frame.

Conventionally, the bottom plate that covers the lower surface of the outer frame of a boiler is attached separately to the lower edge of the outer frame, or to the lower edge of the inner frame outside or inside the outer frame, respectively, by caulking or screwing. It is attached to the fitting by screwing at three or more places to the fitting.

However, such a conventional structure has the following drawbacks: firstly, there are many screw-fastening points and the workability of assembly is poor, and secondly, in addition to requiring a large number of screws, a separate mounting bracket is also required, which makes parts difficult to assemble. It had the disadvantage of having a large number of points and being expensive.

Therefore, the present invention allows the bottom plate to be attached to the outer frame with fewer screws and without the need for separate mounting fittings, thereby improving the workability of assembly and reducing the cost. The object of the present invention is to provide a boiler with an extremely rational structure, which is capable of attaching a bottom plate to the outer frame and also attaching and fixing a decorative cover to the outside of the frame.

An embodiment of the present invention will be described below with reference to the drawings.

In the figure, reference numeral 1 denotes an outer frame, which has a vertical cylindrical shape with openings on both the upper and lower sides, and an inner frame 3 with a bottomed cylindrical shape is disposed inside the frame with a heat insulating material 2 in between. An annular electric heater 4 serving as a heat source is disposed above the inner bottom surface of the inner frame 3.

Reference numeral 5 denotes a pot which is housed in the outer frame 1, more specifically, in the inner frame 3 so as to be removable and removable, and is heated by the electric heater 4 for boiling food to be cooked, such as cooking rice. For this reason, a heat-sensitive actuating portion 7 of a well-known thermoswitch mechanism 6 is disposed from below the inner frame 3 to the outer bottom surface of the pot 5.

Reference numeral 8 denotes a switch base which is attached and fixed to the circumferential side of the lower corner of the outer frame 1 with screws 9, and a switch 10 which is included in the thermoswitch mechanism 6 and controls the supply of electricity to the electric heater 4 is mounted on this base. It is attached and supported by suitable means not shown.

Reference numeral 11 denotes a hole formed in a portion directly above the switch base 8 on the side surface of the outer frame 1, through which the operating lever 12 of the thermoswitch mechanism 6 passes through the outer frame 1 from the inside to the outside.

Reference numeral 13 denotes a decorative cover provided to cover a part of the circumferential side surface of the outer frame 1, and its best example (upper part in the figure) is attached to the circumferential side surface of the outer frame 1 with screws 14.

Here, the decorative cover 13 has a recess 15 for locking the lid below the screw 14, and below the recess 15 there are pilot lamps 16 for displaying rice cooking and keeping warm.
．． 17, and further below that, there is a recess 18 for operating the switch along with a hole 19 in the back wall thereof, and an operating knob 20 with this hole 19 attached to the tip of the operating lever 12. It is penetrated so that it can be moved up and down.

Thus, at the tip of the other side (lower part in the figure) of the decorative cover 13, a stepped portion 21 having an amount equivalent to the thickness of the bottom plate, which will be described later, is formed, and a hole 22 that opens upward from this stepped portion 21 is formed. ,
On the other hand, the switch base 8 is formed with a screw hole 23 in a lower part bent approximately horizontally, and extends upward to a certain extent around the periphery thereof, and the outer frame 1 is provided with a screw hole 23 at the upper edge and the outer frame 1. Inwardly curled portions 24 on both sides of the lower edge.
．． 25 is formed.

Now, reference numeral 26 denotes a bottom plate that covers the open lower surface of the outer frame 1.On one side of the bottom plate, which is the upper edge on the left side in the figure, only one place is shown, but for example, there are two claws 2 at two places separated by an angular range of 120°.
7, and on the other side, the right end in the figure, there is a bulge 2 for a recess 28 at an intermediate position with respect to both the claws 27.
9, a hollow boss portion 30 is provided to protrude upward.

Therefore, regarding such a bottom plate 26, the claw 2 on one side thereof
7 is engaged with the curled portion 25 of the lower edge of the outer frame 1, and the boss portion 30 on the other side is engaged with the hole 22 on the other side of the decorative cover 13.
The bulging portion 29 is inserted into the hole 22 by passing through the hole 22, and then the screw 31 inserted into the boss portion 30 from the recess 28 is screwed into the screw hole 23 of the switch base 8 and tightened.

As a result of the above, the bottom plate 26 of this embodiment is attached to the lower edge of the outer frame 1 at two places on one side by fastening, and at one place on the other side is fixed to the switch base 8 by screws. In other words, it is fixed except for the one screwed place, but compared to conventional products where everything was screwed, the number of troublesome screwed places can be reduced and the assembly process is easier. This can greatly improve performance.

Furthermore, one side of the bottom plate 26 is directly attached to the outer frame 1, and the other side is attached to the switch base 8 to support the switch 10, which is different from the conventional method. There is no need for separate mounting fittings, etc., and the number of screws used can be reduced as described above, and the workability of assembly can be further improved and the cost can be reduced.

Moreover, on the other side of the bottom plate 26, in addition to attaching it to the switch base 8, the other side of the decorative cover 13 is also fixed, so the fixing of the other side of the decorative cover 13 is particularly important. does not require special means and can be made even more rational than the above.

It should be noted that the present invention is not limited to the embodiments described above and shown in the drawings, but may be implemented by appropriately changing, for example, the specific shape of each part, etc., without departing from the spirit of the invention.

As described above, in the present invention, one side of the bottom plate covering the lower surface of the outer frame is attached to the lower edge of the outer frame by fastening, and the other side is screwed to the switch base together with the other side of the decorative cover. This allows the bottom plate to be attached to the outer frame with fewer screws and without the need for separate mounting fittings, thereby improving assembly work efficiency and lowering the price. Furthermore, it is possible to provide a boiler with an extremely rational structure, which is capable of attaching a bottom plate to the outer frame and also attaching and fixing a decorative cover to the outer frame.

[Brief explanation of the drawing]

The figure is a longitudinal cross-sectional view of the main parts of an embodiment of the present invention. In the figure, 1 is an outer frame, 4 is an electric heater, 5 is a pot, 8 is a switch base, 10 is a switch, 13 is a decorative cover, 22 is a hole, 23 is a screw hole, 25 is a curled part, 26 is a bottom plate, 27
29 is a protrusion, 30 is a boss, and 31 is a screw.

Claims (1)

[Scope of utility model registration request] An outer frame that houses a pot and has an electric heater that heats the housed pot and has a fixed switch base that supports a switch that controls energization of the electric heater, and a part of the peripheral side of the outer frame. a decorative cover that covers the outer frame and has one side attached to the circumferential side of the outer frame; and a decorative cover that covers the lower surface of the outer frame and has one side fixedly attached to the lower edge of the outer frame and the other side of the decorative cover. The boiler comprises a side plate and a bottom plate fixed to the switch base with screws.