JPH0114287Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention can be used, for example, by operating a slide button on the stopper of a thermos flask.
This invention relates to a stopper opening/closing mechanism for a thermos flask configured to open and close a flap at the same time as opening and closing a valve body provided on the stopper.

(b) Prior art In order to enhance the heat-retaining and cold-retaining effects of the thermos flask, and to prevent the contents from spilling out in the event of an unexpected fall, a stopper equipped with a valve element is attached to the top end of the thermos flask, and the thermos flask is equipped with a stopper equipped with a valve element to prevent cockroaches, etc. In order to prevent the intrusion of pests and the adhesion of dust, the spout is equipped with a flap, but when in use, it is desirable to be able to open and close the valve body and the flap at the same time, and moreover, with a single touch.

However, the various mechanisms conventionally used have complicated interlocking mechanisms, have a high possibility of failure, and are expensive.

Furthermore, since the operation is performed from above the stopper, first press, slide or rotate the push button etc. from above to open the valve body and flap, then lift the thermos bottle by the handle and pour the liquid. This required an action of ``dosing'', and the liquid could not be injected with a single touch (see Japanese Utility Model Application No. 58-40036).

(C) Purpose of the invention This invention aims to reduce costs by simplifying the mechanism, and at the same time, to create a mechanism for opening and closing the stopper of a thermos flask, which has excellent operability and allows pouring with just one hand and pump operation. For the purpose of providing.

(d) Structure of the device This device includes a cap portion having a handle fixed to the upper end of the thermos bottle, and a stopper that is removably screwed onto the cap portion. A flapper is provided on the spout side so as to be openable and closable via a shaft, and a spring is provided on the spout side and biases the flap in a normally closed direction. a spout passage formed inside the body and communicating the spout and the bottle mouth of the thermos bottle; a valve body provided in the center of the stopper body to constantly close the spout passage; and a valve body provided inside the stopper body. a slide button which has one end slightly protruding from the plug body above the proximal end of the handle and is configured to be slidable back and forth by a push push mechanism; A tapered cam part that presses down the hemispherical top of the stopper, a rotating tool that is pivoted inside the stopper body and rotates downward when the slide button advances, and a free end of the rotating tool that is An actuating protrusion is provided which is located within the plug and is spaced apart from the flap, and which projects from the through hole of the plug when the slide button moves forward and presses down the inner pressing portion of the flap against the spring. The present invention is characterized in that it is a stopper opening/closing mechanism for a thermos flask configured to simultaneously open and close the valve body and the flap.

(e) Effects of the invention According to this invention, one end of the slide button protruding from the stopper can be pressed while grasping the handle of the thermos, so that the valve body and the flap can be opened and closed at the same time with a push button operation. Furthermore, the mechanism can be simplified and manufactured at low cost.

Furthermore, by adopting a push-up mechanism,
Once the slide button is pressed, the valve body and flap remain open even if the user releases the button, which has the effect of improving the workability of liquid injection work.

In addition, all the opening/closing mechanisms, except for the spout flap, are built into the stopper body, and the slide button is located at the top of the handle, so there is no protrusion on the back of the handle, which prevents rolling accidents caused by hooks, etc. Of course, this can be prevented, but the operating protrusion is located inside the plug body away from the flap in the normal state, and the flap and the operating protrusion are separated and have a non-contact structure in the normal state. The rotation operation for attaching and detaching the body is not hindered in any way, so when pouring water into the thermos bottle, water can be easily filled by simply rotating the stopper and removing it from the mouthpiece. It is convenient for use.

In addition, even if the stopper is removed from the mouthpiece, the spring biases the flap in the normally closed direction, so the flap does not open, making it easy to reattach the stopper and offering excellent operability. It has the effect of

(F) Embodiment of the invention An embodiment of the invention will be described below in detail based on the drawings.

The drawings show the stopper opening/closing mechanism of a thermos flask, and in FIGS. 1 to 3, this thermos flask has a container body 1,
It includes a heat insulating bottle 2, a mouthpiece 3, and a stopper 4.

The above-mentioned cap part 3 is formed into a cylindrical body with a bottom, and a handle 5 is integrally formed on one end of the outer peripheral surface of the cap part 3, and the liquid poured out from the spout hole 6 is placed in a thermos bottle at the other end. The outer circumferential wall and the bottom of the bottomed cylindrical body of the spout 7 are continuously and integrally protruded in order to lead out to the outside.

Furthermore, a flap 10 is attached to the upper part of the above-mentioned spout 7, and is rotatably supported by a shaft 8 on the side of the thermos bottle body, and is always urged in the closing direction by a spring 9. It is arranged at the upper end of 1.

The above-mentioned cap part 3 has the above-mentioned plug body 4 on its inner peripheral wall.
A spiral thread 11 is screwed onto the bottle, and a spout hole 6 communicating with the bottle opening 12 of the heat-insulating bottle 2 described above is formed at the bottom thereof.

The above-mentioned stopper 4 has a seal ring 13 attached to its lower periphery, and when the stopper 4 is rotated in the closing direction, the above-mentioned seal ring 13 comes into pressure contact with the periphery of the spout hole 6 of the mouthpiece 3. This forms a sealed space for the thermos bottle 2.

The above-mentioned plug body 4 has a spiral thread 14 screwed thereon substantially in the center thereof to be removably screwed into the spiral thread 11 of the above-mentioned cap part 3, and a part of this spiral thread 14 has the above-mentioned spiral thread 14 screwed thereon. A spout path 15 is located at a position corresponding to the spout 7.
is formed.

Furthermore, the upper flange portion 16 of the above-mentioned spouting passage 15 and the inner pressing portion 1 of the above-mentioned flap 10 are provided.
A through hole 18 is bored at a position corresponding to 7.

The above-mentioned plug body 4 has a plug cap 1 on its upper peripheral wall.
9 is fitted and fixed, and a space 20 is formed therein,
A slide button 21 is mounted at the center of this space 20 so as to be slidable in the front-rear direction and always urged rearward by a spring 22.

Here, the above-mentioned slide button 21 is attached to the stopper 4 with its rear end slightly protruding above the base end of the handle 5.
It is attached to the side.

The above-mentioned pouring path 15 partitioned off by the partition wall 23 is formed at the bottom of the above-mentioned space 20.

Further, an operating rod hole 24 is formed projecting from the rear side of the plug body 4, and an operating rod 25 is loosely fitted into this hole 24 so as to be freely rotatable in the horizontal direction.

Furthermore, a rotating tool 28 is plugged into the rear side of the above-mentioned operating rod hole 24 via a shaft 26, and the above-mentioned shaft 26
A spring 29 attached to the rotary tool 28 constantly biases the free end of the rotating tool 28 downward, and an operating projection 27 is integrally formed on the free end.

A protrusion 30 is provided above the partition wall 23 to prevent the slide button 21 from falling downward, and a cylinder 31 is provided in the center of the stopper 4 to prevent the slide button 21 from falling downward. It is integrally formed to hang down.

A valve hole 33 into which the valve body 32 is slidably inserted is bored in the bottom of the cylinder 31.
The above-mentioned valve body 32 is inserted upward.

The above-mentioned operating rod 25 has its fixed end loosely engaged with the operating rod hole 24, and its free end engaged with the above-mentioned slide button 2.
It comes into pressure contact with the bottom of the guide groove 34 of No. 1 and loosely fits into it.

Therefore, the operating rod 25 can freely rotate in the left-right and up-down directions due to the shape of the guide groove 34 described above.

The above-mentioned valve body 32 is vertically slidable, is always urged upward by a spring 35, and always closes the lower part of the above-mentioned spouting passage 15 by a seal ring 36 attached to the lower part thereof.

The above-mentioned slide button 21 has a pressing part 37 whose lower part is open and the above-mentioned guide groove 34 is formed on the upper end surface.
and a tapered cam portion 38 that vertically slides the hemispherical top at the upper end of the valve body 32, and a pressing portion 37 protrudes above the base end of the handle 5,
When in use, it can be operated without taking your hand off the handle 5.

A pin 40 is provided protrudingly on both sides of the slide button 21 at a position corresponding to the operating surface 39 of the rotating tool 28, and when the slide button 21 is at the backward limit, the protrusion 40 causes the above-mentioned operation to occur. The rotating tool 28 comes into contact with the surface 39 and rotates upward against the spring 29.

Therefore, in the normal state (the state shown in FIG. 1), the operating protrusion 27 at the free end of the rotating tool 28 is located inside the plug 4 spaced apart from the flapper 10.

By the way, as shown in FIG. 4, the aforementioned guide groove 34 forms an annular path that can be slid back and forth in stages based only on the push operation of the pressing portion 37 of the slide button 21, and the aforementioned operating rod 25 loosely engage.

Sawtooth protrusions 41 having appropriate heights are formed at the bottoms of the guide grooves 34 described above.
Therefore, the above-mentioned operating rod 25 rotates left and right under the control of the guide groove 34, and can only enter in the direction of the arrow, and reverse movement is prevented by the serrated ridge 41. 25 and the spring 22 constitute a push mechanism.

In the closed state of the thermos flask stopper opening/closing mechanism constructed as described above, the slide button 21 is retracted to the retracting limit as shown in FIG.

Therefore, as shown in FIG. 5, the engaging portion E of the guide groove 34 and the operating rod 25 are in a disengaged state, and the cam portion 38 and the valve body 32 are also in a disengaged state, and the valve body 32 is raised by the spring 35. The lower side of the spouting passage 15 of the stopper 4 is closed, and the pin 40
Due to the contact between the actuating surface 39 and the actuating surface 39, the actuating protrusion 27 of the rotating tool 28 is rotated upward against the spring 29, and is located inside the plug body 4.

Therefore, the flap 10 is rotated downward by the spring 9 to normally close the spout 7.

From this closed state, operate the stopper opening/closing mechanism to open the spouting passage 15, and when pouring liquid from the thermos, press the pressing part 37 of the slide button 21 against the spring 2.
2, the slide button 21 slides forward and rotates the operating rod 25 to the left on the slope A of the guide groove 34, and then to the right on the slope B of the guide groove 34. While rotating, the guide groove 34
It rides on the serrated protrusion 41 protruding from the bottom of the.

Due to the flexibility of its intermediate portion, the operating rod 25 moves downward in accordance with the height of the serrated ridge 41, climbs over it, and comes into pressure contact with the bottom of the guide groove 34 again, thereby preventing its reverse movement. At the same time, it comes into contact with the C portion of the guide groove 34 as shown in FIG.

Therefore, the slide button 21 stops sliding forward and does not move. In other words, it is in a state where it is pressed to the forward limit.

Therefore, if you release the pressure on the slide button 21,
The slide button 21 naturally slides backward due to the biasing force of the spring 22, and the operating rod 25 follows this sliding movement.
After rotating clockwise on the inclined surface D of the guide groove 34, the engaging portion E of the guide groove 34 is rotated as shown in FIG.
The rearward sliding of the slide button 21 is stopped, and the valve body 32 is pushed down by the cam portion 38 against the spring 35 to open the lower side of the spout passage 15, as shown in FIG. The rotating tool 28 is further rotated downward by the spring 29, and the operating protrusion 2
7 protrudes from the through hole 18 of the plug body 4 and the flap 10
The inner pressing part 17 is pressed, the flap 10 is rotated upward against the spring 9, and the spout 7 is opened to be in an open state where liquid can be poured from the thermos flask.

To change the thermos flask from the open state to the closed state, press the slide button 21 forward again against the spring 22. As the slide button 21 slides forward, the operating rod 25 is moved into the guide groove 34. While rotating clockwise on the inclined surface F, the guide groove 3
4 on the sawtooth-like protrusion 41 protruding from the bottom.

The operating rod 25 has a serrated protrusion 4 in the same manner as described above.
1 and press against the bottom of the guide groove 34 again.
At the same time as its backward movement is prevented, it comes into contact with the G section of the guide groove 34 as shown in FIG.

Therefore, the slide button 21 stops sliding forward and does not move. In other words, it is in a state where it is pressed to the forward limit.

Therefore, if you release the pressure on the slide button 21,
The slide button 21 naturally slides backward due to the biasing force of the spring 22, and the operating rod 2
5 is rotated to the left on the inclined surface H of the guide groove 34, and at the same time, it is caused to ride on the serrated ridge 41 protruding from the bottom of the guide groove 34.

The operating rod 25 has a serrated protrusion 4 in the same manner as described above.
1 and comes into pressure contact with the bottom of the guide groove 34 again to prevent the slide button 21 from moving backward, and at the same time, the slide button 21 is stopped from sliding in the rearward direction by the stopper piece 42. In other words, it is in a state where it has returned to the backward limit.

Therefore, as shown in FIGS. 1 and 5, the valve body 32
is engaged with and disengaged from the cam part 38 and pushed upward by the spring 35 to close the lower side of the spouting passage 15,
Further, due to the contact between the pin 40 and the operating surface 39, the operating protrusion 27 of the rotating tool 28 is rotated upward against the spring 29, and the inner pressing portion 1 of the flap 10 is rotated upwardly against the spring 29.
Release the pressure of 7.

Therefore, the flap 10 is rotated downward by the spring 9 to close the spout 7 and return to its original closed state.

In addition, in the above-mentioned embodiment, the serrated ridge 41 is formed in order to prevent the operating rod 25 from moving backward.
Other structures may be used as long as the operating rod 25 does not move backward.

As described above, the thermos bottle stopper opening/closing mechanism having the above structure has the following effects.

That is, when the slide button 21 is pressed down, the valve body 32 is opened via the cam portion 38, and at the same time, the operating protrusion 27 of the rotating tool 28 opens the through hole 18.
The flap 10 can be driven open by protruding from the flap.

In addition, the slide button 21 can be operated with the finger of the hand holding the handle 5, and the forward position of the slide button 21 is maintained by the push-push mechanism, which has the effect of greatly improving the operability of the liquid pouring operation.

Moreover, the flap 10 is not held in the normally closed position by the operating projection 27, but the flap 10 is held in the normally closed state by the spring 9, and the operating projection 27 in the normal state is spaced apart from the above-mentioned flap 10. , is located inside the plug body 4, so that the rotation of the plug body 4 to be attached and removed is not hindered in any way by a series of mechanisms that simultaneously open and close the valve body 32 and the flap 10.

Therefore, when pouring liquid into the thermos bottle 2, by simply rotating the stopper 4 and taking it out from the mouthpiece 3, you can easily pour the liquid, and the stopper 4 can be reused. It is also easy to install.

The above-described configuration has the advantage that a series of mechanisms for simultaneously opening and closing the valve body 32 and the flap 10 by one-push operation can be disposed within the plug body 4 without interfering with the attachment and detachment of the plug body 4 in any way. There is.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a top vertical sectional view showing the stopper opening/closing mechanism of a thermos flask in a closed state, Fig. 2 is a top longitudinal sectional view showing the same in an open state, and Fig. 3 is a top longitudinal sectional view showing the stopper opening/closing mechanism of a thermos flask in an open state. FIG. 4 is an explanatory diagram of the guide groove, and FIGS. 5 to 8 are schematic diagrams of the operation of the slide button and operating rod. 2... Warmth bottle, 3... Mouthpiece, 4... Stopper, 5
... Handle, 7 ... Spout, 8 ... Shaft, 9 ... Spring, 10 ... Flap, 12 ... Bottle mouth, 1
5... Output path, 17... Inner pressing part, 18... Through hole, 21... Slide button, 27... Operating protrusion, 2
8... Rotating tool, 32... Valve body, 38... Cam portion.

Claims (1)

[Scope of Claim for Utility Model Registration] A cap 3 having a handle 5 fixed to the upper end of the thermos bottle 2, and a stopper 4 removably screwed onto the cap 3, the cap 3 side being , a flapper 10 mounted on the spout 7 of the mouthpiece 3 via a shaft 8 so as to be openable and closable; and a flapper 10 provided on the mouthpiece 3 side.
0 in the normally closed direction, and a spring 9 is provided on the stopper 4 side, which is formed inside the stopper 4 to connect the spout 7 and the bottle opening 12 of the heat-retaining bottle 2. Communicating pouring path 15
and a spouting passage 15 provided at the center of the stopper 4.
a valve body 32 that always closes the valve; and a slide button 21 that is provided inside the plug body 4 and has one end slightly protruding from the plug body 4 to the upper part of the proximal end of the handle 5, and is configured to be slidable back and forth by a push-push mechanism. a tapered cam portion 38 which is provided on the slide button 21 and presses down the hemispherical top of the upper end of the valve body 32 when the slide button 21 moves forward; a rotating tool 28 that rotates downward when moving forward; and a rotating tool 28 formed at the free end of the rotating tool 28, which is located in the stopper 4 apart from the flap 10 in normal state;
An operating protrusion 27 is provided which protrudes from the through hole 18 of the stopper 4 and presses down the inner pressing portion 17 of the flap 10 against the spring 9 when the slide button 21 moves forward, and when the slide button 21 is pushed forward, the valve is closed. A thermos bottle stopper opening/closing mechanism configured to simultaneously open and close a body 32 and a flap 10.