JPS6031624Y2 - thermos - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a thermos flask in which a fluid flow path is formed in the lid of the thermos flask, and an on-off valve is provided in this fluid flow path.

This type of thermos bottle normally closes the on-off valve to shut off the fluid flow path, but only opens the on-off valve to open the fluid flow path when pouring out tea, making it convenient as there is no need to open and close the lid when pouring tea. However, in order to be practical, it is necessary that the structure is simple and that opening and closing operations are easy.

This invention was made in response to such demands, and the object is to provide the thermos flask which has a simple structure and is easy to open and close.

This invention, in order to achieve this object distantly, interposes a stopper mounting member on the upper side and a substantially annular rotating member on the lower side between the upper cover and the lower cover. While biasing the member downward, a cam is formed between the stopper mounting member and the rotating member, and as the rotating member rotates, the stopper mounting member is raised against the biasing force of the spring. It is characterized by something that has been done to the best of its ability.

An embodiment of this invention will be described below in detail with reference to the drawings.

In the thermos flask shown in the drawing, reference numeral 1 denotes a thermos bottle, and a lid consisting of an upper lid 2 and a lower lid 3 is attached to an opening S of the thermos flask.

A stopper mounting member 5 for attaching a stopper 4 is interposed between the upper M2 and the lower cover 3, and the stopper mounting member 5
A rotating member 6, which will be described later, is interposed below.

The plug attachment member 5 has an annular shape, has a thread 7 on its inner circumferential surface, and is screwed into a screw 8 provided on the outer periphery of the plug 4. A spring 9 is provided between it and the top cover 2. The plug attachment member 5 is always urged downward by the spring 9.

The rotating member 6 is a substantially annular member with a notch on the side of the outlet 15. The rotating member 6 is placed on the lower M3 and rotates the lever 10 protruding outward to open the lower lid. It is designed to rotate at the top of 3.

A plurality of downwardly protruding cam surfaces 11 are provided at equal intervals on the bottom surface of the plug mounting member 5, and a plurality of cam surfaces 11 are provided on the top surface of the rotating member 6. A correspondingly downwardly recessed cam surface 12 is provided.

When the protruding cam portion 13 of the plug mounting member 5 is fitted into the concave cam 14 of the rotating member 6, the plug 4 screwed into the plug mounting member 5 closes the opening S of the heat retaining layer 1. It is composed of

At this time, the plug attachment member 5 is urged downward by the urging force of the spring 9 as described above, and therefore, the plug 4 screwed into the plug attachment member 5 is also pushed into the opening S of the heat insulating layer 1 by the urging force. Closely attached from above.

Note that 21 indicates a packing.

The lever 10 of the rotating member 6 is provided directly above the handle 20 of the thermos flask, and has a concave surface 22 on its surface as shown in FIG.
, and hold the handle 2 of the thermos with four fingers below the index finger.
0, the lever 10 can be rotated by placing the thumb on the concave surface 22 of the lever 10 and rotating the thumb left and right.

That is, the user is configured to be able to operate the handle 10 with his or her thumb while grasping the handle 20 of the thermos and drawing out tea.

At the top of the outlet 15 for pumping out the hot water from the lower lid 3, there is a
An opening/closing lid 16 is rotatably attached by a pin 17 provided on the upper side wall of the outlet 15.

A spring 1 with a pin 17 as a fulcrum is attached to the opening/closing lid 16.
8 is attached, one end of the spring 18 is locked in a locking hole 23 of the opening/closing lid 16, and the other end is locked in a locking hole 19 at the tip of the stopper attachment member 5.

Note that the spring 18 is slightly biased in the direction of lowering the opening/closing lid 16, so that the opening/closing lid 16 is normally closed.

The thermos flask constructed in this manner is operated as follows.

That is, when pouring hot water into the heat-retaining layer 1, the stopper 4 and the stopper mounting member 5 are screwed together with the stopper 4 closing the opening S of the heat-retaining layer 1 and the lid 16 of the outlet 15 closed. After untying and removing the stopper 4, hot water is poured into the opening of the heat-retaining layer 1, and after the injection is completed, the stopper 4 is screwed onto the stopper attachment member 5.

When pouring out hot tea, first grasp the handle 20 of the thermos with four fingers below the ring finger, place the thumb on the concave surface 22 of the lever 10 of the rotating member 6, and rotate the lever 10 in the opening direction of the thermos.

When the lever 10 is rotated, the rotating member 6 is rotated, and as a result, the cam 12 of the rotating member 6 pushes up the cam 11 of the stopper attachment member 5, and is screwed onto the stopper attachment member 5. The plug 4 thus moved also moves upward, and the opening S of the heat retaining layer 1 is opened.

At the same time, as the stopper mounting member 5 moves upward, the locking hole 19 of the stopper mounting member 5 also moves upward, and the spring 18, one end of which is engaged with the locking hole 19, rotates to the left about the pin 17. death,
The free end of the opening/closing lid 16 is lifted to open the outlet 15, and a flow path for hot tea from the opening S of the heat insulating layer to the outside of the outlet 15 is opened.

In this way, the opening S of the heat insulating layer 1 and the opening/closing lid 1 of the outlet 15 are
By tilting the thermos with 6 open,
The hot tea inside is poured out from the opening P of the front ball of the lower lid 3 through the outlet 15.

When the rotating member 6 is rotated in the opposite direction to the positive side of the thermos flask, the cams 11 and 12 are disengaged, the stopper attachment member 5 is moved downward, and the stopper 4 opens the opening S of the heat insulating layer 1. At the same time as closing, the opening/closing lid 16 of the outlet 15 is also closed.

In the above embodiment, the lever 10 extends to the side of the thermos flask, but it may also extend to the top surface, that is, the top surface of the top lid 2.

This invention has a simple structure because the stopper 4 itself, which is opened and closed when pouring hot tea, serves as an on-off valve, and no special valve is required to open and close the fluid flow path.

Furthermore, the stopper 4 can be opened and closed simply by rotating the lever 10 of the rotating member 6, and the opening and closing operations are easy.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway longitudinal sectional view showing the state with the stopper removed. FIG. 2 is a partially cutaway vertical sectional view when the stopper is closed. FIG. 3 is a partially cutaway vertical sectional view showing the stopper in an open state. FIG. 4 is a perspective view of a portion of the lever of the rotating member. 1. Heat insulation layer, 2. Upper lid, 3.
...Lower lid, 4...Bung, 5...Bung mounting member, 6...Rotating member, 9...Spring, 11, 12 ...Cam surface.

Claims (1)

[Scope of utility model registration request] A stopper mounting member is interposed above and a substantially annular rotating member is interposed below between the upper cover and the lower cover, and the stopper mounting member is biased downwardly, and the stopper mounting member is 1. A thermos flask, characterized in that the lid has a cam formed between the rotary members, and is configured to raise the stopper attachment member against the biasing force of the spring as the rotary members rotate.