JPS646754Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to the structure of a liquid container such as a thermos flask, and includes a stopper that fits tightly into a liquid supply port formed on a shoulder member at the top of the container body configured to store liquid inside. A liquid passage forming a part of the pouring passage that communicates between the inside and outside of the container body is formed in the stopper, and the stopper is driven in the vertical direction to open and close the liquid passage, and is normally closed by a valve spring. A valve body that is biased in the valve direction, and an operating member that is driven horizontally by manually operating an operating section and that converts the horizontal displacement into vertical displacement of the valve body via a cam mechanism. The object of the present invention is to propose a valve element operating mechanism that can smoothly and reliably open and close the valve element in a liquid container provided with the following.

In order to achieve the above object, the present invention has a cam mechanism between the valve body and the operating member in the liquid container as described above, which is formed at the upper end of the valve body, and the entire cam action part is in the shape of a convex arc. A cam portion consisting of a cam surface and a cam portion integrally formed on the lower surface of the operating member and having a concave arc-shaped cam surface on a part of the cam action portion are configured to engage or disengage, and When the cam portions are engaged, the valve element opens against the valve spring, and is held open by the convex-concave engagement of both the arcuate cam surfaces, while when the cam portions are disengaged, the valve body opens. The body closes the valve by the biasing force of the valve spring, and applies a biasing force to the operating member in a direction that resists the horizontal drive of the operating member when the valve is operated in the valve opening direction, and when the valve is operated in the valve closing direction, the operating member is operated. This is characterized by the addition of a return spring that applies a biasing force in a direction that promotes horizontal movement of the member.

Embodiments of the present invention will be described below with reference to FIGS. 1 and 2.

In the following description, a thermos flask is used as an example, but it goes without saying that the present invention can also be applied to electric pots for heating and keeping warm, or liquid containers such as cold containers.

In FIGS. 1 and 2, reference numeral 1 denotes the container body, 2 an outer case made of sheet metal that constitutes the outer circumferential surface of the container body 1, and 3 a liquid made of a vacuum double bottle that constitutes the inner circumferential surface of the container body 1. The container 4 is a shoulder member made of synthetic resin that constitutes the upper surface of the container body 1.

This container body 1 is for storing a liquid in a liquid container 3 and keeping it warm.

The shoulder member 4 includes a liquid supply port 6 leading into the liquid container 3 and a gutter-like liquid injection path 10 (which communicates between the inside and outside of the container body 1 (forming part of a series of pouring passages 9) and a handle 11 on the side opposite to the beak part.

A shoulder member cover 12 is attached to the upper surface of the shoulder member 4, and a screwed plug insertion hole 13 leading to the liquid supply port 6 is provided in the center of the shoulder member 4 and the shoulder member cover 12. It is formed.

A plug 14 for closing the liquid supply port 6 is removably screwed into the plug insertion hole 13.

The plug body 14 is formed with an upper space 15 and a lower liquid passage 17 (constituting a part of the series of pouring passages 9), which is partitioned from the space 15 by a partition wall 16. has been done. The liquid passageway 17 is continuous with the liquid injection passageway 10 on the side of the shoulder member 4 to form a series of pouring passageways 9.

The inlet side opening 17a of the liquid passage 17 is connected to the valve body 1.
8 to be opened and closed.

The valve stem 18a of the valve body 18 passes through a through hole 19 formed in the partition wall 16 and faces into the space 15, and is normally urged in the valve closing direction by a valve spring 20. ing. Reference numeral 21 is a spring receiver.

Further, an operating member 22 for directly opening and closing the valve body 18 is provided in the inner space 15 of the plug body.

The operating member 22 is configured in the shape of a long plate that slides horizontally along the lower surface of the top plate 14a of the plug body 14,
The operating portion 22a is integrally projected upward and is exposed upward through a window hole 23 formed in the top plate 14a of the plug body. The front part of the operating member 22 has an L-shaped part facing an opening 24 formed on the side surface of the beak side of the plug body 14 and forming a part of an interlocking mechanism 26 for opening and closing a flap 25, which will be described later. A linking portion 22b is integrally provided in a protruding manner.

Between the operating member 22 and the valve body 18, as the operating member 22 slides in the direction of arrow A, the upper end surface of the valve stem 18a of the valve body 18 is pressed, and the valve body 18 is moved in the valve opening direction ( In other words, a cam mechanism is provided for maintaining that state after being operated in the downward direction. Note that when operating the operating member 22 in the valve opening direction, a biasing force is applied in a direction that opposes the horizontal movement of the operating member 22, and when operating the operating member 22 in the valve closing direction, a biasing force is applied in a direction that promotes the horizontal driving of the operating member 22. A return spring 28 is attached to act on the force. Reference numerals 29 and 30 are guides.

The cam mechanism is formed at the upper end of the valve stem 18a of the valve body 18, and is integrally formed with a cam part 41 whose entire cam action part consists of a convex arc-shaped cam surface 41a, and the lower surface of the operating member 22, It is configured in combination with a cam portion 27 having a concave arc-shaped cam surface 27a on a part of the portion.

On the other hand, the beak portion 7 of the shoulder member 4 is provided with a gutter-like cavity 32 that is separated from the liquid injection path 10 by a partition member 31 .

A flap 25 for opening and closing the liquid injection port 8 is pivotally mounted in the gutter-like cavity 32 so as to be able to rotate freely in an arc.
The flap 25 is formed in a substantially U-shape and is always urged in the opening direction by a spring 33. The flap 25 is connected to the operating member 2 through an interlocking mechanism 26 consisting of a slider 34 that is slidably disposed behind the flap 33 in a gutter-like cavity 32 and a linking portion 22b of the operating member 22.
2 and is interlocked so as to be interlocked. That is, when the operating member 22 is operated to open the valve (sliding in the direction of arrow A), the slider 34 moves backward (moves to the right in FIG. 1), and the flap 25 is opened by the biasing force of the spring 33. Ru.

Next, the operation of the liquid container (thermos flask) of the illustrated embodiment will be explained.

First, in the state shown in FIG. 1, the valve body 18 is in an open state and the flap 25 is also in a closed state, making it impossible to dispense from the thermos bottle.

Therefore, the operating portion 22a of the operating member 22 is
When moved in the direction, the cam portion 27 and the cam portion 41
2, the valve body 18 is pushed down and the inlet side opening 17a of the liquid passage 17 is opened as shown in FIG. At the same time, the linking portion 22 of the operating member 22
b moves back against the spring 28, and the slider 3
4 becomes free, and the flap 25 is opened by the biasing force of the spring 33 as shown in FIG. Therefore, the thermos becomes ready for dispensing.

When the operating member 22 is driven horizontally as described above, the biasing force of the return spring 28 continues to act in a direction that opposes the horizontal drive, and when the cam parts 27 and 41 constituting the cam mechanism engage with the concave and convex portions, the valve is closed. The open state of the valve body 18 is to be maintained, and a certain amount of force is required to open the valve body 18. Therefore, inadvertent opening of the valve body 18 is prevented, and safety is greatly improved.

In the above case, the operating member 22 attempts to return to its original position due to the biasing force of the return spring 28, but the arcuate cam surfaces 41a and 27a of the cam portions 41 and 27 are engaged with each other. Therefore, the operating member 22 is held in position against the return spring 28, and the valve body 18 is held in the open state.

Thereafter, when the operating portion 22a is moved in the direction of arrow B, the dispensing state shown in FIG. 1 is restored.
At this time, the operating member 22
Since the valve is urged in a direction that promotes the valve-closing operation by the urging force of 8, it is automatically returned to its original position simply by releasing the engagement of the cam parts 27 and 41 with the projections and recesses.

In the above case, the operating member 22 is
When operating in direction B, the cam portion 27 on the operating member 22 side moves while abutting against the cam surface 41a of the cam portion 41, which has a convex arc-shaped cam surface 41a as a whole, so its movement is smooth. Moreover, when the top of the convex arc-shaped cam surface 41a and the concave arc-shaped cam surface 27a engage, the operating member 22 is reliably positioned, and the valve body 18 can be reliably held in the open state.

Next, to explain the effects of the present invention, the present invention:
A liquid passage constituting a part of a pouring passage that communicates between the inside and outside of the container body is provided in a stopper that is tightly fitted into a liquid supply port formed in a shoulder member on the upper part of the container body configured to accommodate liquid therein. At the same time, the stopper includes a valve body that is driven in the vertical direction to open and close the liquid passage and is always biased in the valve closing direction by a valve spring, and a valve body that is driven in the vertical direction to open and close the liquid passage and is normally biased in the valve closing direction by a valve spring. (1) A cam operating portion is provided at the upper end of the valve body 18; Since the cam portion 41 is formed with a convex arcuate surface 41a as a whole, and the cam portion 27 on the operating member 22 side slides in contact with the cam portion 41, the operating member 22 can be moved forward and backward smoothly.

(2) A biasing force is applied to the operating member 22 in a direction that resists the horizontal drive of the operating member 22 when the valve is operated in the valve opening direction, and a biasing force is applied to the operating member 22 when the operating member 22 is operated in the valve closing direction.
Since the return spring 28 is attached to apply a biasing force in a direction that promotes the horizontal drive of the valve body 18, the operation to open the valve body 18 is performed by a force that resists the biasing force of the return spring 28. The operation for opening the valve body 18 is facilitated by the biasing force of the return spring 28, so that inadvertent opening of the valve can be reliably prevented and the valve closing operation can be extremely facilitated.

(3) A part of the cam surface of the cam part 27 on the operating member 22 side is a concave arc-shaped cam surface 27a, and when the valve body 18 is opened, the concave arc-shaped cam surface 27a becomes a convex circular cam surface on the valve body side. 41a, even though the operating member 22 is urged in the cam disengagement direction by the return spring 28, the engaged state of both cam parts 41 and 27, that is, the valve body 18 can be reliably maintained in the open state.

(4) Moreover, when the valve body 18 is operated to close, the operating member 22 can be easily operated by the biasing force of the return spring 28.

There are other effects.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view of a main part of a liquid container according to an embodiment of the present invention in a valve closed state, and FIG. 2 is a longitudinal sectional view of a main part of the liquid container of FIG. 1 in a valve open state. DESCRIPTION OF SYMBOLS 1... Container body, 4... Shoulder member, 6... Liquid supply port, 8... Liquid injection port, 9... Output passage, 14... Stopper, 17... Liquid passage, 18... Valve Body, 20... Valve spring, 22... Operation member, 27... Cam portion, 27a... Concave arc-shaped cam surface, 28... Return spring, 41... Cam portion, 41a... Convex arc-shaped cam surface.

Claims (1)

[Scope of utility model registration request] Container body 1 configured to contain liquid inside
A liquid passageway 17 constituting a part of the pouring passageway 9 that communicates between the inside and outside of the container body 1 is formed in the stopper 14 that tightly fits into the liquid supply port 6 formed in the upper shoulder member 4. The stopper 14 includes a valve body 18 which is driven in the vertical direction to open and close the liquid passage 17 and is always biased in the valve closing direction by a valve spring 20, and a valve body 18 which is driven in the vertical direction to open and close the liquid passage 17 and which is normally biased in the valve closing direction by the valve spring 20. The liquid container is provided with an operation member 22 that is driven by a valve element 18 and has an operation member 22 that converts the horizontal displacement into an upward and downward displacement of the valve body 18 via a cam mechanism,
The cam mechanism between the valve body 18 and the operating member 22 is formed at the upper end of the valve body 18, and includes a cam portion 41 whose entire cam action portion is composed of a convex arc-shaped cam surface 41a.
and a cam portion 27 that is integrally formed on the lower surface of the operating member 22 and has a concave arc-shaped cam surface 27a on a part of the cam action portion. 41, 27, the valve body 18 opens against the biasing force of the valve spring 20, and both the arcuate cam surfaces 41a,
The valve body 18 is held open by the convex-concave engagement of the cam parts 27a, while the valve element 18 is held open by the valve spring 20 when the cam parts 41 and 27 are disengaged.
A biasing force is applied to the operating member 22 in a direction that resists the horizontal drive of the operating member 22 when the operating member 22 is operated in the valve opening direction, and a biasing force is applied to the operating member 22 in a direction that opposes the horizontal drive of the operating member 22 when operating the operating member 22 in the valve closing direction. A liquid container characterized in that a return spring 28 is attached that applies a biasing force in a direction that promotes horizontal movement of the member 22.