JPH0710273Y2 - Lid device for container - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is an optimum lid device used for fixing the tube to the mouth of the container when the liquid in the container is taken out through the tube. Regarding

[Conventional technology]

In various fields such as chemistry, pharmacy, medicine, and biology, various analytical devices have been used recently and have been successful, and various analytical devices use various chemicals. In particular, liquid chemicals are sucked up from a container such as a bottle by a pump or pushed up by gas pressure to be supplied to an analyzer. When the latter gas pressure is used, a special pressure vessel is required, but when the former pump is used, the tube is generally inserted directly into the reagent bottle in many cases. Particularly in liquid chromatography, which has made remarkable progress in recent years, it is generally practiced to suck up a mobile phase solvent by a pump and pump it.

In such various devices, when pumping the solvent with a pump, a tube of relatively hard material such as fluororesin (RTFE) is usually used from the viewpoint of chemical resistance and prevention of tube collapse due to negative pressure caused by suction. in use. Then, by inserting the tube into a container such as a bottle and covering the upper surface of this tube with aluminum foil or the like, it is generally possible to prevent the tube from coming off and to prevent the inflow of dust and the scattering of solvent vapor. It is being appreciated.

[Problems to be solved by the device]

However, the tubes such as RTEF are generally not flexible like rubber or vinyl tubes and have a strong restoring force, so they naturally float up from the bottom of the container with time, or the aluminum foil that holds the tube down. May be removed. The same thing happens when the tube is touched by mistake, and as a result, if the air is sucked into the pump, the results of experiments and analyzes will be adversely affected, and valuable samples and time will be wasted. I will leave. In addition, if the aluminum foil covering the mouth comes off, dust in the air will get into the solvent, reducing the function of the pump or clogging the piping, which will stop the experiment and analysis itself. The scattered solvent vapor adversely affects the body of the measurer.

In addition to this, the tube is often pulled by mistake and the solvent container is overturned. However, the aluminum foil or the like cannot prevent the internal liquid from spilling out.

In order to prevent this, rubber stoppers or caps may be used with holes. However, since it is absorbed by the pump, dust enters through the ventilation holes in addition to the holes through which the tubes pass. Also, if you fix the tube firmly,
There is a problem that the length of the tube cannot be easily adjusted, and in the case of a screw mouth, when the cap is rotated, the tube is twisted and becomes unwieldy.

In view of the above, the present invention firmly fixes the tube to a container such as a bottle, and does not have a negative pressure inside due to the suction of the liquid, and has a vent hole to prevent dust in the air from entering the container. In addition, it is an object of the present invention to provide a tube having a tube length that can be easily adjusted.

[Means for Solving the Problems]

In order to achieve the above object, in the container lid device of the present invention, a cap is attached to the head of the container with a slight gap between the inner peripheral surface of the cap and the outer peripheral surface of the mouth of the container. In the container lid device in which the tube reaching the inside of the container is inserted into the cap, an outer diameter slightly smaller than the inner diameter of the cap is provided between the mouth end surface of the container and the lower surface of the cap. A cylindrical ring having a cut portion at one position is provided at a lower position, a taper portion that abuts on the inner peripheral surface of the ring and has a gradually smaller diameter is provided downward, and a tube insertion hole is formed at the center in a radial direction. Further, a substantially cylindrical holder that can be opened and closed is sequentially interposed at an upper position.

[Action]

According to the present invention configured as described above, the holder is gradually closed by gradually fitting the ring into the tapered portion, and at the same time, the ring is relatively opened. Therefore, in this state, the tube inserted into the tube insertion hole of the holder has a certain degree of freedom. Then, when the ring is further fitted into the tapered portion of the holder,
The outer peripheral surface of the ring contacts the inner peripheral surface of the cap to restrict the opening, and as a result, only the holder is closed, so that the tube inserted in the tube insertion hole can be firmly fixed.

Moreover, in this state, the inside of the container communicates with the outside of the container through the gap between the rings and the slight gap between the inner peripheral surface of the cap and the outer peripheral surface of the container mouth.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

Inside the inside of the container 1 such as a bottle for filling a liquid such as a drug, a male screw portion 1a is provided, and a thin-walled substantially cylindrical shape that is attached to the head of the container 1 and has an opening on the upper surface. On the inner peripheral surface of the cap 2 provided with 2a, a female screw portion 2b that is screwed into the male screw portion 1a is engraved.

As described above, the cap 2 is attached to the head of the container 1 with a screw. Usually, in the case of screw connection, there is a slight gap between the two, and the gap is spiral and dust is not generated. Because it is difficult to enter, the inner surface of the cap 2 and the container 1
Other than screw connection, as long as it can be crowned with a slight gap between the outer surface of the mouth portion and the outer surface.

Between the mouth end surface 1b of the container 1 and the lower surface 2c of the cap 2, for example, a resin-made cylindrical ring 3 and a resin-made holder 4 are sequentially interposed, and a tube 5 is internally provided. It has been inserted.

The outer diameter D of the ring 3 is formed to be slightly smaller than the inner diameter d of the cap 2, and the ring 3 is provided with a cut portion 3a at one location. Is opened or closed by widening or narrowing, and the opening is regulated by contacting the outer peripheral surface with the inner peripheral surface of the cap 2.
By opening 3a, it is configured to communicate with each other in the vertical direction.

The holder 4 is configured to be openable and closable by making a pair of semicircular members 4 ', 4 "divided into two parts so that their dividing surfaces 4a face each other, and a tube for inserting a tube 5 in the center thereof. The insertion hole 4b is formed, and the lower surface is formed with a taper portion 4c having a diameter gradually decreasing downward.

Then, the tube 5 inserted into the tube insertion hole 4b is
The holder 4 is sandwiched and fixed, and this fixing is performed by fitting the tapered portion 4c into the inside of the ring 3.

In the case of the present embodiment, the holder 4 is configured to be openable and closable by a pair of constituent members 4 ', 4 "that are divided into two parts. With such a configuration, a tube having a filter or a joint is attached. If there is, it can be easily applied.

The holder may be partially connected and configured to be openable and closable.

Next, a usage example of the above embodiment will be described.

First, the tube 5 is passed through the opening 2a of the cap 2, and the holder 4 in which the tube 5 is sandwiched from the screw side of the cap 2 is inserted.
Insert. At this time, the holder 4 is inserted with the surface opposite to the tapered portion 4c facing the lower surface 2c of the cap 2. Further, the ring 3 is brought into contact with the tapered portion 4c of the holder 4. In this state, the tapered portion 4c of the holder 4 allows the ring 3 to enter only a certain depth, and does not strongly restrain the two constituent members 4 ', 4 "of the holder 4 divided into two parts. It is possible to move freely in any direction, and even in the direction of rotation.

Subsequently, when the cap 2 is tightened to the male screw portion 1a of the mouth of the container 1, the ring 3 is gradually pushed by the end face 1b of the mouth of the container 1 against the holder 4 which is in contact with the cap 1, and the holder 2 is composed of two parts. 4 is gradually moved toward the center. At the same time, since the ring 3 is provided with the cut portion 3a at one location, the cut portion 3a gradually expands and does not press the holder 4 with a force greater than a certain level. Therefore, the tube 5 is slightly free in this state, and the tube 5 will not be twisted even if the cap 2 is rotated for tightening.

When the cap 2 is further tightened, the ring 3 is further widened, but the outer peripheral surface of the ring 3 contacts the inner peripheral surface of the cap 2 to restrict the opening. Then, when the cap 2 is further tightened, the opening of the ring 3 is restricted and only the holder 4 is closed. As a result,
The holder 4 strongly clamps and restrains the tube 5. The split surface 4a of the holder 4 is also strongly pressed, leaving no gap, and the tube 5 is strongly restrained and fixed, and cannot be freely moved.

Further, in this state, the cut portion 3a of the ring 3 is slightly widened. As a result, the inside of the container 1 has a ring 3
The space between the cut portion 3a and the inner peripheral surface of the cap 2 and the outer peripheral surface of the mouth portion of the container 1 are communicated with the outside of the container 1 via a slight distance, that is, a screw portion. In this embodiment, a slight gap between the inner peripheral surface of the cap 2 and the outer peripheral surface of the mouth portion of the container 1 can be vented so that the inside of the container 1 is not depressurized when the liquid inside the container 1 is sucked out. However, it is preferable that the gap is such that the liquid in the container 1 does not easily flow out, and further that the liquid does not flow out.

Further, this gap is small, and a large amount of vapor of the liquid inside the container 1 is scattered, and the liquid is prevented from being lost when the liquid falls.

On the other hand, when the cap 2 is rotated in a direction to loosen the cap, the ring 3 is pushed out toward the lower surface of the cap 2 by the taper portion 4c of the holder 4 and the restoring force of the ring 3.
The ring 3 is separated from the inner wall of the cap 2, and the holder 4 is
The restraint force of the tube 5 is weakened because it is pressed only by the restoring force of the ring 3. As a result, the tube 5 is not twisted even when the cap 2 is rotated. Also, even if the cap 2 is completely removed, the ring 3 remains
The holder 4 holds the tube 5 to an appropriate degree without being caught by the threaded portion 2b of the above and easily falling.

[Effect of device]

Since the present invention is configured as described above, the tube can be fixed to the container such as a bottle relatively easily, and the handling and the adjustment of the length of the tube can be easily performed.

In addition, since the inside and outside of the container communicate with each other from below the cap through a slight gap in the ring and a spiral threaded portion, the inflow of dust is very small, and the solvent vapor is scattered and falls. There is an effect that the outflow of liquid can be suppressed as much as possible.

[Brief description of drawings]

1 is a sectional view showing an embodiment of the present invention, FIG. 2 is an exploded sectional view, FIG. 3 is a rear view of a cap, FIG. 4 is a rear view of a holder, and FIG. 5 is a ring. FIG. 1 ... container, 1a ... same male screw part, 1b ... end face of same mouth, 2
...... Cap, 2b ...... same female thread part, 2c ...... same bottom surface, 3 ...
… Ring, 3a… same cutting part, 4… holder, 4b… same tube insertion hole, 4c… same taper part, 5 …… tube.

Claims (1)

[Scope of utility model registration request] 1. A cap is attached to the head of a container with a slight gap between the inner peripheral surface of the cap and the outer peripheral surface of the mouth of the container, and a tube reaching the inside of the container is attached to the cap. In the container lid device adapted to be inserted and attached, an outer diameter slightly smaller than an inner diameter of the cap is provided between an end face of the container and a lower surface of the cap.
A cylindrical ring with a cutting part at the bottom is placed at the lower position, a taper part that abuts the inner peripheral surface of this ring and gradually decreases in diameter, and a tube insertion hole is formed in the center to open and close in the radial direction. A lid device for a container, wherein a substantially cylindrical holder is sequentially interposed at an upper position.