JPH0137553Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention measures the liquid level in a liquid container that cannot be seen from the outside.
Liquids in thermos flasks, electric pots, etc. that are configured to be detected by a capacitance type liquid level detection device or an energized liquid level detection device and displayed on a liquid level display section such as a liquid crystal display that can be viewed from the outside. This invention relates to a liquid container with a position detection device.

(Prior Art) This type of liquid container is already known from Japanese Patent Application Laid-open No. 162259/1983. However, there is no specific structure for mounting the display member, and it is difficult to implement.

On the other hand, as a specific example, there is also known a type having a pipe case surrounding a discharge pipe outside the liquid container, and having a display member provided on the pipe case. This product is installed by placing the display case containing the display member and the electronic circuit component onto the water conduit cover provided in the pipe case and fitted with the discharge pipe, and engaging the display member and the electronic circuit component with the holding claws. An electronic circuit component is sandwiched between them. Further, the display case is installed in the pipe case together with the water conduit cover, and its display part is fitted into a display window provided in the pipe case so that it can be directly viewed from the outside.

(Problem to be solved by the invention) However, in the above specific structure, the water pipe cover is in contact with something through which hot water passes, such as a discharge pipe, and the display case is directly attached to the water pipe cover, so the display case receives heat conduction from the hot water and tends to have a thermal effect on the display member and electronic circuit components inside the display case. Therefore, the durability of display members, particularly electronic circuit components, is poor. Furthermore, although the display case accommodates the display member and the electronic circuit components, the display section and the electronic circuit components cannot be stabilized only by attachment to another water conduit cover. In other words, the display case itself cannot be handled as an integrated member with the display member and the electronic circuit member, but must be handled separately until the above-mentioned attachment. Therefore, the handling and installation work until the display case is attached becomes complicated. Moreover, the display case cannot be used simply by attaching it to the water pipe cover; in addition to setting the water pipe cover inside the pipe case, it is also necessary to fit the display part of the display case into the display window of the pipe case. However, it is not easy to install it in a state where it can be easily seen from the outside and it takes time.

SUMMARY OF THE INVENTION An object of the present invention is to provide a liquid container with a liquid level detection device that can solve the above-mentioned problems by improving the assembly structure of the display case.

(Means for solving the problem) In order to achieve the above purpose, the present invention
A display window is provided in the pipe case that forms the exterior body surrounding the discharge pipe, and the inner surface of the display window opening part of the pipe case is placed against the display case that houses and holds the liquid level display member and the electronic circuit component. The present invention is characterized in that a display section including a position display member is fitted into the display window, and a display case is attached to the pipe case without contacting the discharge pipe.

(Function) Since the liquid level display member and the electronic circuit component are housed and held in the display case, they can be handled as a single unit. By applying it to the inner surface of the pipe case, the display part made of the liquid level display member of the display case fits into the display window of the pipe case so that it can be seen from the outside and is attached to the pipe case without contacting the discharge pipe. be able to.

(Example) The present invention will be specifically described below based on an example shown in the drawings.

In the first embodiment shown in FIGS. 1 and 2, a liquid container 5 made of a vacuum double glass bottle is placed inside a container body 4 mainly composed of an outer case 1, a bottom case 2, and a shoulder member 3. A lid 6 is pivotally attached to the upper end of the container body 4 so as to be openable and closable, and the liquid in the liquid container 5 is pumped through the liquid pumping pipe 8 and the inner stopper by the compression operation of a bellows pump 7 built into the lid 6. The present invention is implemented in a thermos flask configured such that the liquid is poured out to the outside through the liquid passage in the liquid passage 9, the liquid injection pipe 10, and the discharge pipe 11.

A synthetic resin pipe case 12 is attached to the upper front surface of the container body 4 so as to surround the discharge pipe 11. Further, a display window 13 is provided at the center of the front surface of the pipe case 12.

The liquid pumping pipe 8 is made of metal such as stainless steel, and is used as the first electrode A, while the liquid container 5
A metal foil 14 such as aluminum foil is arranged around the outer periphery of the liquid container 5 so as to surround the liquid container 5, and this is used as the second electrode B. The liquid level in the liquid container 5 is detected by paying attention to the fact that the liquid level changes as the temperature changes.

A liquid level display unit 18 is attached to the back surface of the pipe case 12 at a position where the liquid level display section 19 can be viewed from the outside through the display window 13.

As shown in FIG. 2, the liquid level display unit 18 of this embodiment includes a back-open case 20 made of transparent synthetic resin so that only the back side is open, a liquid level display member 15 made of liquid crystal, an LSI, 21 , oscillator 2
2. It mainly consists of an electronic circuit component 16 in which capacitors 23, 23, variable resistors 24, fixed resistors 25, 25, . . . are arranged on a printed circuit board 26, and a rubber cover 17.

A conductive rubber 27 is provided on the back surface of the liquid level display member 15.
is arranged, thereby electrically connecting the liquid level display member 15 and the electronic circuit component 16. 2
8 and 28 are rubber spacers. The electronic circuit component 16 has four lead wires 30, 31, 3.
2 and 33 are connected, and these are taken out rearward from a cylindrical lead wire takeout part 29 provided on the rubber cover 17. This lead wire extraction portion 29 is in a reduced diameter state due to the elasticity of the rubber, so the lead wire 3
0, 31..., there is almost no gap, and the dehumidifying effect is excellent.

Engaging protrusions 34 are provided on the upper and lower surfaces of the open back case 20, and a protruding display section 35 that fits into the display window 13 is provided on the front surface of the open back case 20.
(Figure 1) is provided. On the other hand, pipe case 1
2 are provided with hook-shaped engaging projections 36, 36 that engage with the aforementioned engaging projections 34, 34.

Thus, as shown in FIG.
6, etc. and assemble the liquid level display unit 18 by fitting a rubber cover 17 to the rear of the case 20 to cover the back of the case. By force-fitting the liquid level display unit 18 onto the back surface of the pipe case 12 so that the mating protrusions 34, 34 and the hook-shaped engaging protrusions 36, 36 engage with each other, the liquid level display unit 18 is attached to the pipe case 1.
2 and the discharge pipe 11 can be fixed in a non-contact state. Further, since the protruding display section 35 provided on the front surface of the back-open case 20 fits into the display window 13, the horizontal and vertical movements of the liquid level display unit 18 are restricted. Furthermore, the liquid level display section 19 of the liquid level display member 15 can be visually recognized from the outside through the display window 13 and the transparent protruding display section 35.

The liquid level display unit 18 connects the lead wire 3 to the first electrode A via the connecting member 37 and the lead wire 30.
1 to the second electrode B respectively, while 1
A power supply battery 38 is connected via a pair of lead wires 32 and 33.
It is connected to the.

In Fig. 1, 39 is a synthetic resin safety device;
40 is a handle, 41 is a reinforcing member, and 42 is a tightening ring.

In the second embodiment shown in FIG. 3, in order to prevent the liquid level display unit 18 from coming off, the discharge pipe 1
A pair of upper and lower ribs 44, 44 are provided protruding from a synthetic resin outer cylinder 43 which is fitted over the outer cylinder 1. Therefore, as in the case of the first embodiment, the liquid level display unit 18 is connected to the engaging protrusions 34, 34 and the hook-shaped engaging protrusions 36, 36.
If it is force-fitted onto the back surface of the pipe case 12 using the above-mentioned ribs 44, 44,
The liquid level display unit 18 is securely fixed in that position.

In this embodiment, a bell-shaped gasket 46 that expands upward is fitted near the upper end flange portion 45 of the discharge pipe 11, and this gasket 46 is elastically inserted into the pipe insertion hole 47 provided in the shoulder member 3. The discharge pipe 11 is fixed at a predetermined position by utilizing the impact on the peripheral wall. In addition, the shoulder pipe case 12 has its upper end locking portion 48 locked with the locking portion 49 of the shoulder member 3, and its lower end 50 is attached to the exterior case 1 with screws 51.
It is fixed in place by screwing it in.

In FIG. 3, common reference numerals are given to components and parts that are common to the first embodiment. Note that 52 is a protrusion provided on the outer cylinder 43, which restricts the downward movement of the outer cylinder 43.

The present invention can be configured in various ways other than those shown in the above embodiments. For example, the liquid level display unit 18 is not limited to that shown in the above embodiment, and may be of any type as long as it incorporates the liquid level display member 15 and the electronic circuit component 16. Further, in the above embodiment, the open back case 20 is integrally formed of transparent synthetic resin, but a separately formed transparent glass or transparent plastic plate is fitted to the front of the open back case 20 to form the display section 35. It is also possible to have such a configuration.

(Effect of the invention) The liquid level display member and the electronic circuit component are housed and held in the display case to form an integrally handled object, and the display part made of the liquid level display member of the display case is fitted into the display window of the pipe case, which is the exterior body. Additionally, it can be easily installed so that it can be seen directly from the outside. In particular, since this installation is done with the display case separated from the discharge pipe, the display case is cut off from heat conduction from the discharge pipe through which hot water passes, greatly reducing the effects of heat on the display member, especially its electronic circuit components. It can improve durability.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention; FIG. 1 is a partially cutaway side view of the first embodiment, FIG. 2 is an exploded perspective view of the main parts thereof, and FIG. FIG. 4 is a longitudinal sectional side view of the essential parts of the third embodiment, and FIG. 5 is a sectional view taken along the line -- in FIG. 4. 11...Discharge pipe, 12...Pipe case,
13...display window, 15...liquid level display member, 16...
...Electronic circuit component, 17...Rubber cover, 1
8...Liquid level display unit, 19...Liquid level display section,
20... back open case, 35... protruding display section.

Claims (1)

[Scope of utility model registration request] A display window is provided in the pipe case that forms the exterior body surrounding the discharge pipe, and the display case that houses and holds the liquid level display member and the electronic circuit component is placed on the inner surface of the display window opening of the pipe case. 1. A liquid container with a liquid level detection device, characterized in that a display portion made of a position display member is fitted into the display window, and a display case is attached to the pipe case without contacting the discharge pipe.