JPS5925330Y2 - Liquid containers such as thermos flasks - Google Patents

Description

[Detailed description of the invention] The present invention comprises a valve seat provided around the inflow part of the liquid outlet, and a core having a valve body at the lower end that seats on the valve seat in the upward movement position and closes the inflow part. The present invention relates to a liquid container such as a thermos flask, which is configured to open and close the inflow portion by vertical movement of a core.

The present invention includes a valve seat provided in a liquid outlet passage, and a core having a valve body at a lower end that seats on the valve seat in an upper stop position and closes the liquid outlet passage, and the core is moved up and down to In a liquid container such as a thermos flask configured to open and close a liquid outlet, a core body and a core cover, which are formed separately, are screwed or force-fitted together to form the valve body, and the valve body is configured to open and close the liquid outlet, and the core body and the core cover are connected by screwing or force-fitting. The base of the packing provided with the annular tongue piece is sandwiched between the flange of the core body and the upper end surface of the core cover to seal the space between the core body and the core cover. At the same time,
The valve body is characterized in that the annular tongue piece and the valve seat are in close contact with each other in the upper stop position of the core so that the space between the valve body and the valve seat can be sealed.

The present invention will be explained in detail below based on embodiments shown in the drawings.

The first embodiment of the present invention, shown in FIGS. 1 and 2, relates to a thermos flask with a screw stopper.
A lower opening member 2 is fixed to the upper end portion, and an annular lid member 3 is force-fitted to the lower opening member 2 so as to cover this.

An opening 5 communicating with the inner container 4 housed in the outer case 1 is provided at the center of the lower opening member 2, and a structure 6 that projects forward (to the left in the figure) is formed at the front end.

A flap support member 7 that covers the structural portion 6 is attached to the front end of the annular lid member 3, and a flap 8 is attached to this support member 7.

Although the peripheral part 29 of the opening 5 of the lower mouth member 2 is formed flat, a side peripheral wall 9 that stands up is provided on the outer peripheral edge, and a plug body (screw plug) 11 is provided on the inner peripheral surface of this side peripheral wall 9. A female thread 10 for screwing is formed.

The plug body 11 forms a guide tube 14 for guiding the crown button 13 in the cap portion 12 at the upper portion thereof.

Further, a stepped cylindrical portion 15 with a bottom is provided below the cap portion 12, and a liquid path forming cylinder 16 is further provided below this.

A male screw 17 that is screwed into the female screw 10 is formed on the side circumferential surface of the bottomed stepped cylindrical portion 15 .

A plug internal liquid path 18 is formed in the liquid path forming cylinder 16,
The lower end opening (inflow part of the liquid outlet path) 19 communicates with the inner container 4, and the outflow part 2 provided on the side peripheral wall 20 of the liquid path forming cylinder 16
1 communicates with a frame external liquid path 22 formed between the lower mouth member 2 and the annular lid member 3.

The outflow portion 21 is provided with a rectifying rib 23 for regulating the flow of liquid during injection.

Further, a collar 24 having a larger diameter than the lower mouth member opening 5 is provided below the outflow portion 21 of the first side peripheral wall 20, and a small annular projection 25 is provided at the lower end of the side peripheral wall 20. A plug gasket 27 is fitted at its base 26 between the front collar 24 and the front collar 24.

The tip end 28 of the plug gasket 27 is open upward in a trumpet shape, but the screwing and tightening of the plug body 11 is sometimes done through the flange 24.
and the peripheral portion 29 of the lower mouth member opening 5, and acts to seal the gap between the two.

Incidentally, the lower surface of the small protrusion 25 serves as a valve seat 50 on which a peripheral portion of the upper surface of a valve body 33 described later is seated.

A crown button 13 is disposed within the guide tube 14 of the stopper 11 so as to be movable up and down but not rotatable, and an operating tube 30 is disposed within the button 13 so as to be movable up and down and rotatable.

Further, a core 32 is attached to the operating cylinder 30 using screws 31.

This core 32 consists of a synthetic resin valve stem 35 and a synthetic resin valve body 33 formed at its lower end.

The valve body 33 is formed by screwing a core cover 34 to a valve body top portion 36 integrally formed with a valve stem portion 35.

The valve body top portion 36 has an annular support portion 37 at its lower portion, and a peripheral portion of the top surface protrudes from the outer circumferential surface of the annular support portion 37 to form a flange portion 39 .

The core cover 34 is formed into a bowl shape, and has a female thread 40 formed on the inner surface of its side peripheral wall to be screwed into a male thread 38 provided on the outer peripheral surface of the annular support portion 37 .

Further, a heat insulating material 41 is housed within the valve body 33.

In this embodiment, the core body referred to in the present invention refers to the valve body top portion 36 (including the annular support portion 37).

A base (lower side) 43 of an annular packing 42 having a substantially U-shaped cross section is interposed at the joint between the core body (valve body top) 36 and the core cover 34 .

That is, by screwing and tightening the core cover 34 onto the core body 36, the lower side (base) 43 of the packing 42 is held under pressure between the lower surface of the flange 39 and the upper end surface 44 of the core cover 34. , the lower surface of the upper side portion 45 of the packing 42 is brought into contact with the upper surfaces of the three peripheral edge portions of the top surface.

Further, the periphery of the upper side portion 45 is an annular tongue piece 46 directed upward.

A ratchet pawl 47 is provided at the lower end of the annular support portion 37 of the core body 36, and ratchet teeth 48 are provided at a portion of the core cover 34 opposing the ratchet pawl 47, respectively.

The ratchet mechanism constituted by these provides almost no resistance when tightening the core cover 34, but provides resistance against loosening of the core cover 34 in the reverse screw direction, causing it to separate from the core body 36. It acts to prevent this.

In addition, if the core cover 34 is to be gripped and rotated in the reverse screw direction with a large force, the resistance of the ratchet mechanism is set to such an extent that the core cover 34 can be removed from the core body 36.

The operating cylinder 30 is urged upward by a biasing spring 49.

Further, a valve body position holding mechanism 51 is formed at the lower inner surface of the guide tube 14, the lower end of the crown button 13, and the lower outer surface of the actuating tube 30.
In addition, the valve body 33 is configured to sequentially and alternately stop at the closed position (upper stop position) or the open position (lower stop position) and maintain this state.

The valve stem portion 35 of the core 32 is connected to the bottomed cylindrical portion 15 of the plug body 11.
It passes through a hole 53 provided in the center of the bottom part 52 of.

A telescopic bellows-like packing 54 whose lower end is fixed to the valve stem 35 is disposed below the hole 53, and the upper end of the bellows-like packing 54 surrounds the hole 53 and is attached to the bottom 52. It is attached to the bottom surface.

The bellows-shaped gasket 54 configured in this manner functions to reliably prevent the liquid in the internal liquid path 18 from leaking into the upper internal space of the plug body 11.

A flap actuating protrusion 55 having a tapered surface is provided at one location on the lower outer peripheral surface of the coronal button 13, and an interlocking mechanism 56 is disposed between the actuating protrusion 55 and the flap 8, so that the coronal button 13 When the flap 8 is in the lower stop position, the restoring force of the torsion spring 57 attached to the flap 8 causes the flap 8 to
When the flap 8 is dynamically opened and the crown button 13 is in the upper stop position, the operating protrusion 55 prevents the movement of the interlocking mechanism 56 in the right direction in the figure, thereby maintaining the flap 8 in the closed state. are doing.

In FIG. 1, 58 is a handle, 59 is a gasket that seals the contact portion between the lower mouth member 2 and the inner container 4, and 60 is a tightening ring.

Next, the operation of this embodiment will be explained.

When the stopper 11 is screwed onto the lower mouth member 2 using the female and male threads 10.17, the lower mouth member opening 5 is closed by the stopper packing 27, and the frame external liquid path 22 and the stopper internal liquid path 1 are closed.
8 is formed.

The inflow portion 19 of this liquid spouting path is closed when the valve body 33 is in the upper stop position.

At this time, the gasket 4 attached to the valve body 33 as shown in FIG.
The second annular tongue piece 46 comes into close contact with the valve seat 50 due to its elastic force, and prevents the liquid in the inner container 4 from flowing into the inlet portion 19.

As shown in FIG. 2, since an upward annular tongue piece 46 is provided around the seal 42, even if there is an error in setting the distance between the valve seat 50 and the valve body 33, this error can be absorbed. It is suitable.

When the valve body 33 is in the lower stop position, a gap is formed between the upper side 45 and the valve seat 50, and the liquid in the inner container 4 is poured out through this gap and the liquid outlet path.

The second embodiment of the present invention shown in FIG. 3 is different from the first embodiment in the method of interposing a packing 42 at the joint between the core body 36 and the core cover 34.

In this embodiment, the flange 39 and the upper end surface 4 of the core cover
A cross-sectional gap 61 is formed between 4 and 4, and this gap 61
A base 43 of the packing 42 is interposed in a cross-sectional shape, and this base 43 is connected to the flange 39 and the upper end surface 44 of the core cover.
It is sandwiched between.

Further, an annular tongue piece 62 of the packing 42 is formed on an extension of the base portion 43.

A third embodiment of the present invention shown in FIGS. 4 and 5 is characterized in that a core body 36 and a core cover 34 are force-fitted together.

That is, a force-fitting convex portion 63 is formed on the outer circumferential side of the annular support portion 37 of the core body 36, and a force-fitting concave portion 64 is formed on the inner circumferential side of the core cover 34.
6, and the uneven portions 64 and 63 are fitted together.

A base portion 43 of an annular packing 42 having an annular tongue piece 46a that is open upward in a trumpet shape is inserted into the joint portion of the core body 36 and the core cover 34 to support it.

That is, the base 43 of the packing 42 is located between the lower surface of the flange 39 of the core body 36 and the upper end surface 44 of the core cover 34.
is held under pressure when force-fitting.

The plug seal 27a attached to the lower end of the plug body 11 is the first
In addition to having a base portion 26 and a tip portion 28 in the embodiment,
It has a cross section 66 that projects downward and inward.

When the valve body 33 is in the upper stop position, this cross-sectional section 66 is formed between the projection 25 and the top peripheral edge 39, as shown in FIG.
caught between.

Also, at this time, the annular tongue piece 46a of the gasket 42 attached to the valve body 33 comes into close contact with the lower surface of the curvilinear cross-sectional portion 66.

In this manner, when the valve body 33 is in the closed position (upper stop position), the valve body 33 and the inflow portion 19 are doubly sealed.

In this embodiment, the lower surface of the cross-sectional angled portion 66 constitutes the valve seat 50.

On the other hand, when the valve body 33 is in the open position (lower stop position),
As shown in FIG. 5, the cross-sectional portion 66 is separated from the lower surface of the small protrusion 25 due to elastic restoring force.

In this embodiment, the core 32 and the valve body 33 are connected to the slide actuator 6 attached to the cap portion 12a of the stopper 11.
It is caused to move up and down by the back and forth movement (left and right movement in the figure) of 8.

This slide actuator 68 has a pressing plate 7 with an inclined surface 69.
0, and is guided by the guide groove 71 of the cap portion 12a to move back and forth.

A spring receiver member 72 is attached to the upper end of the core 32 using screws 73.
The guide plate 74 has a guide plate 74 equipped with a guide plate 74 and is urged upward by a spring 75.

Further, a flap actuating member 76 is integrally provided at the front end of the pressing plate 70, and is interlocked with the flap 8 via an interlocking mechanism 56.

Further, the inclined surface 69 of the pressing plate 70 and the inclined surface 73 of the guide plate 74 are in contact with each other.

Thus, as shown in FIG. 4, when the slide actuator 68 is moved forward (to the left in the figure) by gripping its knob 77, the spring holder extends to the member 72, and the valve body 33 extends to the spring 75. The flap 8 is urged upward and held at the closed position, and the flap 8 automatically closes.

On the other hand, when the slide actuator 68 is moved rearward (to the right in the figure) as shown in FIG. 5, the spring receiver member 72 is pushed down by the pressing plate 70, and the valve body 33 is moved down to the open position. The flap 8 automatically opens while being held in place.

Further, in this embodiment, a donut plate-shaped packing 78 is fitted onto the valve stem portion 35 of the core 32, and is provided around the bottom hole 53 of the bottomed stepped cylindrical portion 15, as shown in FIG. Recess 7
9 and the gasket 78 are configured to be in close contact with each other for sealing.

Since the present invention has the above configuration, it can produce the following effects.

■ Since the joint between the core cover and the core body is sealed with a gasket, it is possible to prevent high temperature liquid from entering the inside of the valve body.

As a result, it is possible to prevent thermal deterioration of the heat insulating material arranged inside the valve body, and also to prevent the propagation of various bacteria within the heat insulating material.

This seal can also be used to seal between the valve body and the valve seat, reducing the number of parts (see Part 1).
Examples (Second Example), the seal can be more reliably achieved (Third Example).

■ Since the base of the packing is sandwiched between the flange of the core body and the upper end surface of the core cover, the packing is held securely and firmly. This can be done simultaneously when combining.

■ An upward-facing annular tongue is provided around the seal, so at the upper stop position of the core, the annular tongue sticks tightly to the valve seat due to its elasticity, ensuring a tight seal between the valve body and the valve seat. This makes it possible to improve sealing performance.

Further, the annular tongue bends when it comes into close contact with the valve seat, and even if there is a dimensional error in setting the distance between the valve seat and the valve body, this can be absorbed, which is advantageous in terms of design.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional side view of the first embodiment of the present invention, Fig. 2 is a longitudinal sectional side view of the main parts thereof, Fig. 3 is a longitudinal sectional side view of the second embodiment of the invention, Figs. The figure is a longitudinal sectional side view of a third embodiment of the present invention. 19... Inflow section, 32... Core, 33
... Valve body, 34 ... Core cover, 36
... Core body, 42 ... Packaging, 5
0... Valve seat, 39... Tsuba, 44...
...Top end surface, 46.46a, 62... Annular tongue piece.

Claims (1)

[Scope of utility model registration request] The liquid outlet includes a valve seat provided in the liquid outlet, and a core having a valve body that seats on the valve seat in an upper stop position to close the liquid outlet, and opens and closes the liquid outlet by vertical movement of the core. In a liquid container such as a thermos flask configured as above, the valve body is formed by screwing or force-fitting a separately formed core body and core cover together, and a gasket is provided with an upward annular tongue around the periphery. The base of the core is sandwiched between the flange of the core body and the upper end surface of the core cover to seal the space between the core body and the core cover, and A liquid container such as a thermos flask, characterized in that the annular tongue piece and the valve seat are in close contact with each other in a position such that the space between the valve body and the valve seat can be sealed.