JPH0742107Y2 - Liquid level indicator for liquid container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a liquid level display device for a liquid container, and more particularly to a mounting structure for a back plate arranged on the back side of a liquid level pipe.

(Prior Art) Conventionally, for example, a liquid level display device used in an electric pot has a heat shield plate as a liquid container for containing a liquid in a case as described in Japanese Utility Model Publication No. 59-25319. A transparent liquid level pipe that communicates with the upper and lower parts of the liquid container via a rubber joint pipe is provided outside the heat shield plate facing the inside of the display window of the case. A back plate is provided on the back side of the tank for concealing the internal structure and for visibility of the liquid in the liquid level pipe.

The back plate is formed in a substantially U-shaped cross-section surrounding the liquid level pipe, and at least one winding strip is formed on each of the upper and lower portions of the back plate. It is bent and attached so that it is wrapped around the joint pipe. Further, a projection is provided on the joint pipe, and the back plate is positioned by fitting a fitting hole provided in the back plate into the projection.

(Problems to be Solved by the Invention) As described above, in the mounting structure of the back plate in the conventional liquid level display device, since the winding strips at the upper and lower portions are wound around the joint pipes and attached, at least two portions are required at the upper and lower portions. It is necessary to bend and wind the wrapping strip at a certain location, there are many bending steps, the back plate is complicated to assemble, and a structure for positioning the back plate needs to be provided separately from the wrapping strip. It was

The present invention has been made in view of the above points, and provides a liquid level display device for a liquid container in which the number of bending steps can be reduced and the back plate can be easily assembled, and a separate positioning structure is not required. The purpose is to do.

[Constitution of device]

(Means for Solving Problems) In the present invention, a liquid container for containing a liquid is provided in a case by being surrounded by a heat shield plate, and a transparent liquid level pipe communicating with the upper and lower parts of the liquid container is provided in the case. In the liquid level display device of the liquid container provided outside the heat shield plate facing the inside of the liquid level window of the liquid level pipe, the back plate is provided on one of the upper and lower parts. An insertion locking claw that is inserted and locked in the locking hole of the heat shield plate is provided, and a bending coupling claw that is bent and coupled to the coupling groove of the heat shield plate is provided on the other side.

(Operation) In the liquid level display device of the liquid container of the present invention, the insertion locking claw of the back plate is inserted and locked in the locking hole of the heat shield plate, and the bent coupling claw of the back plate is fixed to the heat shield plate. The back plate is positioned and fixed to the heat shield plate by bending and connecting it to the connecting groove.

(Embodiment) Hereinafter, a configuration of an embodiment of the present invention will be described with reference to the drawings.

In the figure, 1 is an electric pot, and this electric pot 1 is
A liquid container 2 which is formed in a bottomed cylindrical shape having an opening on the upper surface and accommodates a liquid w such as water is provided. The liquid container 2 is accommodated inside a cylindrical case 3 forming an outer shell, and a lower part of the case 3 is accommodated. A leg frame 4 is attached, and a lid 5 having an inner lid for opening and closing the upper surface of the liquid container 2 on the upper part of the case 3 and an air pump mechanism for applying pressure to the liquid container 2 can be opened and closed. Further, a discharge port 6 is provided on the front surface of the case 3 and communicates with the lower portion of the liquid container 2 to discharge the liquid w in the liquid container 2 when the pump mechanism operates.

Further, a heater 7 is provided in the lower area of the outer periphery of the liquid container 2 to heat the liquid w contained in the liquid container 2 so as to boil or retain the heat. The heater 7 is provided on the outer periphery of the liquid container 2. Surrounds the liquid container 2 and the heater 7, and
A cylindrical heat shield plate 8 made of metal is provided to prevent heat from being transmitted and to prevent heat from being transferred to the outside such as the case 3.

Then, the liquid level display device 11 provided in the electric pot 1
Is provided with a transparent liquid level pipe 12 made of, for example, glass which is vertically disposed between the case 3 and the heat shield plate 8. The upper end of the liquid level pipe 12 is a liquid joint pipe 13 made of, for example, rubber. It is connected to the upper opening 2a of the container 2, while the liquid level pipe
The lower part of 12 is communicated with the lower port 2b of the liquid container 2 by a rubber joint pipe 14, for example, and the liquid w in the liquid container 2 is introduced into the liquid level pipe 12.

The case 3 facing the front of the liquid level pipe 12 is provided with a long liquid level window 15 along the up-down direction, and a transparent liquid level window cover 16 is attached to the liquid level window 15, and The level pipe 12 can be seen through this level window cover 16.

Further, a back plate 17 is provided on the back side of the liquid level pipe 12,
This back plate 17 is a back plate 18 located on the back of the liquid level pipe 12.
And both side plates 19 which are located on both side surfaces of the liquid level pipe 12 and open toward the front liquid level window 15, are formed in a substantially U-shaped cross section. Also, on the upper end of the back plate 18 of this back plate 17,
A substantially L-shaped insertion locking claw 20 which is inserted and locked in a locking hole 8a formed on the upper side of the heat shield plate 8 is integrally provided,
In addition, at the lower end of the back plate 18, a bent connecting claw that is bent and fitted into a connecting groove 8b formed by cutting out at the lower edge of the heat shield plate 8.
21 is integrally provided, and on the side surface of the rear plate 18 facing the heat shield plate 8, projections 22 that contact the outer surface of the heat shield plate 8 are formed in the upper and lower portions, respectively. The inner surface of the back plate 17 facing the liquid level pipe 12 is colored in a striped pattern that is inclined at a certain angle so that the liquid level of the liquid w introduced into the liquid level pipe 12 can be easily confirmed. There is.

Next, assembly of the back plate 17 will be described.

With the back plate 17 kept in a horizontal posture, the insertion locking claw 20 at the upper part of the back plate 17 is inserted into the locking hole 8a of the heat shield plate 8 and the tip region of the insertion locking claw 20 is locked. The back plate 17 is rotated downward while still inserted into the hole 8a, and the back plate 18 of the back plate 17 is aligned with the outer surface of the heat shield plate 8 so that the tip of the insertion locking claw 20 is shielded from heat. It is attached to the back surface of the plate 8 to prevent it from coming off.

In addition, the bent connecting claws 21 at the lower portion of the back plate 17 are bent and fitted into the connecting grooves 8b of the heat shield plate 8, and are caulked and joined to the back surface of the heat shield plate 8.

In this way, in the back plate 17, the protrusion 22 abuts on the outer surface of the heat shield plate 8 and the upper insertion locking claw 20 and the lower bent coupling claw 21 are connected to the heat shield plate 8 to provide heat shield. It is supported by the plate 8 in a state where it is positioned and prevented from rotating.

Further, in the above embodiment, the insertion locking claw 20 is provided on the upper part of the back plate 17 and the bending coupling claw 21 is provided on the lower part, but it may be upside down, and in this case, it is bent on the upper part of the heat shield plate 8. A coupling groove 8b into which the bending coupling claw 21 is bent and coupled is provided, and a hole-shaped locking hole 8a into which the insertion locking claw 20 is inserted and locked is provided in the lower portion.

[Effect of device]

According to the present invention, the back plate is attached to the heat shield plate by inserting and locking the insertion locking claws of the back plate into the heat shield plate and bendingly connecting the folding coupling claws to the heat shield plate. Only one bending step is required, the back plate can be easily assembled, and the back plate can be positioned with respect to the heat shield plate by attaching the insertion locking claws and the bending connection claws to the heat shield plate.

[Brief description of drawings]

1 is a partial sectional view of an electric pot showing an embodiment of a liquid level display device for a liquid container according to the present invention, FIG. 2 is a partial perspective view thereof, and FIG. 3 is a front view of the whole. . 2 ... Liquid container, 3 ... Case, 8 ... Heat shield, 8a ...
Locking hole, 8b ... Coupling groove, 12 ... Liquid level pipe, 15 ... Liquid level window, 17 ... Back plate, 20 ... Insertion locking claw, 21 ... Bending coupling claw.

Front page continued (72) Inventor Mikio Fujisaki 2570, Gosuda, Kamo City, Niigata Prefecture 1 within Toshiba Thermal Appliances Co., Ltd. (56) References JP, U)

Claims (1)

[Scope of utility model registration request] 1. A liquid container for containing a liquid is provided in a case by being surrounded by a heat shield plate, and a transparent liquid level pipe communicating with the upper and lower parts of the liquid container is exposed inside the liquid level window of the case. In a liquid level display device for a liquid container, which is provided on the outer side of a heat shield plate and provided with a back plate on the back side of the liquid level pipe, the back plate is provided at either one of the upper and lower parts with a locking hole of the heat shield plate. A liquid level display device for a liquid container, characterized in that an insertion locking claw for insertion locking is provided, and a bending coupling claw that is bent and coupled to a coupling groove of the heat shield plate is provided on the other side.