JPH0220973Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application The present invention relates to the structure of a stopper for a liquid container such as a magic bottle, and in particular, a liquid flow path that opens on the bottom and side surfaces of the stopper body is formed. This invention relates to a plug structure in which a manually operated valve member is provided to close a lower opening of the liquid flow path, the opening is opened by moving the valve member downward, and the opening is closed by moving the valve member downward again. be.

BACKGROUND OF THE INVENTION Various types of plugs having the above-mentioned functions are known. One example is the one described in Japanese Patent Publication No. 43-25555.
In this device, an annular cam is carved into an operating rod for operating a valve member, a groove is formed in a support cylinder into which the operating rod is inserted, and a ball is inserted between the cam and the groove. By moving the operating rod up and down, the ball rolls within the cam, and the movement of the operating rod is controlled so that the valve member opens and closes the opening.

Problems to be Solved by the Invention However, with the structure described above, there is a possibility that the ball may not operate smoothly. In particular, when coffee, etc. is poured into a liquid container, some of the coffee, etc. may enter between the operating rod and the support cylinder due to capillary action, wetting the operating parts, or it may become concentrated and sticky. This caused the unit to become inoperable.

Other structures having similar functions are known, but they have more or less the same problems.

The present invention was developed in view of the above circumstances, and provides a stopper structure that prevents the operating part from getting wet due to liquid entering the liquid container and functions stably over a long period of time. The purpose is to

Means for Solving the Problems Accordingly, the present invention forms a liquid flow path opening on the bottom and side surfaces of the stopper, and provides a valve member for closing the bottom opening of the liquid flow path. An operating rod, which is integrally provided with the valve member, passes through the plug body and reaches the upper surface thereof, and a spring member urges the valve member in a direction to close the lower opening, and the valve member is inserted into the plug body on the side of the operating rod. A pair of cam members are provided which face each other and have annular recessed cam surfaces on opposing surfaces, and the recessed cam surfaces have stable positions at the lower edges of the upper and central projections and two preliminary positions at the lower part. and forming an inclined edge for guiding alternately between a stable position and a preliminary position, and both ends of a pin protruding from the side surface of the operating rod are fitted into the recessed cam surface. It is characterized by this.

The present invention will be explained below with reference to the drawings. FIG. 2 shows a state in which the stopper of the present invention is attached to a magic bottle, and the stopper 1 is screwed onto the shoulder body 3 of the magic bottle 2.

FIG. 1 shows the structure of the stopper of the present invention.
Reference numeral 4 denotes a stopper, which is composed of a stopper body 5 and a stopper cover 6. Openings 7 and 8 are formed on the bottom and side surfaces of the stopper main body 5, respectively, and the liquid flowing from the opening 7 to the opening 8 is A flow path 9 is formed, and the liquid content flowing out from the opening 7 via the liquid flow path 9 and the opening 8 is poured out from the spout 10 of the magic bottle 2, as shown in FIG.

Reference numeral 11 denotes a plate-shaped valve member for closing the lower opening 7, and an operating rod 12 is integrally provided on the upper surface of the valve member.
The plug cover 6 is slidably and rotatably passed through the plug cover 6 to reach the top surface of the plug cover 6, and an operating member 14 is fitted to the top end thereof. A pin 15 passes through the operating rod 12 slightly below the operating member 14, and a spring member 17 is interposed between the spring receiver 16 fitted below the pin 15 and the plug body 5. The valve member 11 is always urged upward by the elasticity of the spring member 17.

A pair of cam members 18 are provided facing each other on the plug body 5 on the sides of the operating rod 12,
An annular recessed cam surface 1 is provided on the opposing surface of the cam member 18.
9 is formed, and the tip of the pin 15 fits into the recessed cam surface 19. Note that this cam member 18 may be provided on the stopper cover 6. As shown in FIG. 4, the recessed cam surface 19 has a generally "F"-shaped central protrusion 20 formed at its center, and the entire recessed portion is approximately in the shape of an inverted heart.

The recessed cam surface 19 has stable positions 21 and 21, respectively, on the upper outer circumference and the lower surface of the central protrusion 20.
22 is formed, and two preliminary positions 23 and 24 are formed on the lower outer periphery, and the pin 15 is formed on the outer periphery of the recessed cam surface 19 and around the central protrusion 20.
terminals are in stable positions 21, 22 and preliminary positions 23, 2
A beveled edge is formed which guides the guide to move alternately between 4 and 4.

Function In the present invention, the solid line in FIG. 2 indicates the valve in a closed state. That is, the operating rod 12 is biased upward by the elasticity of the spring member 17,
Both ends of the pin 15 are connected to the recessed cam surface 1 of the cam member 18.
It is located in the upper stable position 21 at 9.
The valve member 11 also rises and closes the opening 7. In this state, the opening 7 is closed, so the liquid inside the magic bottle 2 cannot be poured out.

Next, when the operating member 14 is pushed down by hand, the operating rod 12 moves downward while compressing the spring member 17. As a result, the end of the pin 15 descends within the recessed cam surface 19 as shown by the chain line A in FIG.
5 and further along the end 2 of the central protrusion 20.
6 and slides along the lower inclined edge 27 of the outer periphery of the recessed cam surface 19 to reach one preliminary position 23. When the force pushing the operating member 14 is removed, the operating rod 12 is moved upward by the elasticity of the spring member 17.
The end of the pin 15 rises as shown by the chain line B in FIG.
reaches a stable position 22 on the lower surface of.

In this state, as shown by the chain line in FIG. 1, the valve member 11 is in the lowered position and is away from the opening 7, so the opening 7 is open. Therefore, by tilting the magic bottle 2, the liquid content flows from the opening 7 through the liquid flow path 9 and the opening 8, and then to the spout 10.
It is poured out from.

Next, when the operating member 14 is pushed down by hand again, the operating rod 12 moves downward against the elasticity of the spring member 17.
The tip of the pin 15 descends along the chain line C in FIG. A preliminary position 24 is reached. Here, if the force pushing the operating member 14 is removed again, the operating rod 12
is moved upward by the elasticity of the spring member 17, and the pin 15
The terminal rises as shown by the dashed line D in FIG. The upper stable position 21 is reached. Then, as shown by the solid line in FIG. 1, the valve member 11 closes the opening 7 again, making it impossible to pour out the liquid content.

Effects of the invention According to the invention, since the cam member 18 is provided at a distance to the side of the operating rod 12, a small amount of the liquid content enters into the stopper 1 from between the operating rod 12 and the support tube 13. Even if this occurs, the liquid content will not wet the recessed cam surface 19, and no malfunction will occur. In particular, as shown in FIG. 4, by providing a slight gap 32 between the lower edge of the cam member 18 and the bottom surface of the stopper body 5, the valve can operate reliably even if a considerable amount of liquid enters. is guaranteed.

Further, according to the present invention, both ends of the pin 15 attached to the operating rod 12 trace the pair of recessed cam surfaces 19 provided oppositely to control the opening and closing of the valve, so that the ball in the conventional example is not The pin 15 can be made thinner than that used, and the operation stroke of the operation member 14 can be made smaller. Furthermore, since the load applied to the pin 15 is borne equally on both ends thereof, the operation is reliable, and the operating parts have little wear and tear, making it possible to withstand long-term use.

[Brief explanation of the drawing]

FIG. 1 is a central vertical cross-sectional view of the stopper of the liquid container of the present invention, and FIG. 2 is a side view, partially shown in central vertical cross-section, of an example of a magic bottle using the stopper. be. FIG. 3 is a - sectional view in FIG. 1. FIG. 4 is a view taken along the - arrow in FIG. 1... Plug, 4... Plug body, 7, 8... Opening, 9...
...Liquid flow path, 11...Valve member, 12...Operation rod, 1
5... Pin, 17... Spring member, 18... Cam member, 19... Recessed cam surface, 20... Central protrusion, 2
1, 22... stable position, 23, 24... preliminary position, 25, 27, 28, 29, 31... inclined edge.

Claims (1)

[Scope of utility model registration request] The plug body 4 is provided with a valve member 11 that forms a liquid flow path 9 that opens on the lower surface and side surface thereof and closes the lower surface opening 7 of the liquid flow path 9, and an operation that is integrally provided on the valve member 11. The rod 12 is passed through the plug body 4 and reaches its upper surface, and the spring member 17 urges the valve member 11 in a direction to close the lower opening 7, so that the rod 12 is inserted into the plug body 4 on the side of the operating rod 12. A pair of cam members 18 are provided facing each other and having annular recessed cam surfaces 19 on opposing surfaces, the recessed cam surfaces 19 being at stable positions 21, 22 at the lower edges of the upper and central projections 20.
, has two preliminary positions 23 and 24 at the bottom,
and inclined edges 25, 27, 28 for guiding alternately between stable positions 21, 22 and preliminary positions 23, 24,
29 and 31, and both ends of the pin 15 protruding from the side surface of the operating rod 12 are connected to the recessed cam surface 19.
A stopper for a liquid container, characterized in that it is fitted with a stopper.