JPH0318376Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a lid with a dropper used for a container containing a liquid (for example, a medicinal solution or a cosmetic solution).

Conventionally, a lid for opening and closing the opening is removably attached to the opening of a container in which liquid is stored, and a dropper tube for extracting the liquid from the container is provided on the lid. .

By the way, as a lid equipped with this type of dropper tube, as disclosed in, for example, Japanese Utility Model Publication No. 56-5579, a dropper tube is screwed into the lid, and the upper part of the dropper tube has elasticity. A structure in which a pump piece is fitted and the liquid in the container is suctioned by fluctuations in air pressure in the dropper tube due to the operation of the pump piece, or
As disclosed in Publication No. 131949, etc.
There is a known structure in which when the lid is turned in the direction of removal, the sliding portion of the dropper tube slides within the suction chamber by the repulsive force of the spring, thereby sucking the liquid.

However, both so-called lids with a dropper equipped with such a dropper tube have a structure in which the base of the dropper tube is locked to the mouth of the container when the lid is screwed onto the mouth of the container. Therefore, the following problems arose.

First, due to variations in the wall thickness of the bottom of the container, when the lid is attached to the container, the dropper tube and the bottom of the container come into contact before both are completely attached. As a result, the sealability of the container is compromised.

Second, contrary to the above-mentioned problem, the tip of the dropper tube does not touch the bottom of the container, and the dropper tube cannot extract liquid due to the distance between the bottom of the container and the dropper tube. It is not possible to use the entire amount of liquid.

Third, if we try to solve the two problems mentioned above at the same time, we have to strictly control the mounting position of the dropper tube and lid and the wall thickness of the bottom of the container, which results in a decrease in product yield. This may lead to an increase in production costs.

This invention was made in consideration of the above-mentioned circumstances, and its purpose is to allow for variations in the wall thickness of the bottom of the container due to molding errors of the container.
To provide a lid with a dropper that allows the tip of the dropper tube to always come into contact with the bottom of the container and to suck almost the entire amount of liquid in the container.

This invention will be explained below with reference to the drawings.

Figures 1 to 3 show an embodiment of this invention, and a lid A with a dropper in this embodiment has a lid 3 screwed onto the opening 2 of a container body 1 in which liquid is stored. A through hole 4 is formed in the top plate portion 3a of the lid 3, and a push button 5 that can be operated from the outside and is slidable in the vertical direction is set in the through hole 4. A suction elastic body 7 that can be elastically deformed and restored by compression is provided, and the dropper tube 6 can be slid vertically with its base end fitted into the suction elastic body 7 in a liquid-tight manner. The length 1 of the dropper tube 6 is such that when the lid 3 is screwed on, the tip 6b of the dropper tube 6 comes into contact with the bottom 1a of the container body 1, and the base end 6a is inside the cylindrical portion 8. The length is set to the position.

The lid body 3 includes an outer lid 9 and an outer lid 9.
The outer cover 9 has the through hole 4 formed in its upper surface, that is, the top plate portion 3a of the cover body 3, and guides the push button 5. A cylindrical guide portion 11 extends downward, and the inner cover 10 is formed in a cylindrical shape passing through the upper and lower surfaces, and the inner cover 10 is formed on the inner peripheral surface thereof.
A support portion 12 protruding toward the center of the mouth portion 2 is integrally provided, and a female thread 14 that is screwed into the male thread 13 of the mouth portion 2 is formed on the lower inner circumferential surface of the support portion 12 .

Further, the push button 5 has a protruding part 5a extending downward at the center thereof, and a flange part 15 that is latched to the top plate part 3a of the lid body 3 is formed on the outer peripheral part of the protruding part 5a. is prevented from coming off from the through hole 4.

Furthermore, the dropper tube 6 is guided by a guide hole 12a surrounded by the support portion 12 and slides up and down, and its base end 6a is formed to have a large diameter.

Also, the large diameter base end 6a of the dropper tube 6
An annular stopper 18 that is secured by the support portion 12 is protruded from the outer peripheral surface of the lower side, and this stopper 18 restricts the upper limit position of the dropper tube 6. .

The suction elastic body 7 is made of an elastic material such as rubber, and includes a dome-shaped pressing portion 19 that is pressed by the push button 5, and a dropper tube that is continuous with the lower end of this pressing portion 19. proximal end of 6
A and a cylindrical portion 8 are fitted liquid-tightly and slidably in the axial direction. An annular flange 20 is integrally provided on the outer periphery of the suction elastic body 7 and is clamped between the cylindrical guide portion 11 of the outer lid 9 and the upper surface of the inner lid 10. . On the other hand, an annular rib 21 is provided on the inner peripheral surface of the cylindrical portion 8.
A plurality of protrusions are provided at equal intervals along the axial direction of the dropper tube 6, and are in close contact with the base end 6a of the dropper tube 6.

Further, numeral 22 in the figure indicates a gasket fitted into the inner lid 10 of the lid body 3.

Note that the push button 5 and the suction elastic body 7 are
They are not limited to being formed separately as in the embodiment, but may be formed integrally.

Therefore, the lid A with a dropper shown in this example
When attaching the dropper tube 6 to the container body 1, the large-diameter base end 6a of the dropper tube 6 is locked to the support portion 12 of the inner lid 10, and the lid body 3 is screwed onto the mouth portion 2. In this case, as the lid body 3 is gradually screwed into the mouth part 2 of the container body 1, the tip 6b of the dropper tube 6 comes into contact with the bottom part 1a of the container body 1, and the base end 6a of the dropper tube 6 comes into contact with the bottom part 1a of the container body 1. It slides upward in the axial direction within the cylindrical portion 8. When the dropper tube 6 is in the position where the lid 3 is attached, its base end 6a is clamped by the elasticity of the cylindrical portion 8, and its tip 6b is attached to the bottom of the container body 1.
It is fixed in contact with a.

That is, the length l of the dropper tube 6 is determined by the first
As shown in the figure, since the wall thickness t is set to be the thinnest, the tip 6b of the dropper tube 6 is always in contact with the bottom 1a of the container body 1, and the wall thickness t is the thinnest. As shown in the figure, in the case of the thickest case, when the lid 3 is screwed on, the tip 6b comes into contact with the bottom 1a, the base end 6a slides inside the cylindrical part 8, and the lid 3 is fixed in the installed position. It will be done. Therefore, without being affected by variations in the wall thickness at the bottom of the container body 1, variations can be tolerated to a large extent, and the yield of the product can be increased to reduce manufacturing costs.

Next, to explain how to use the lid A with a dropper configured in this way, when the push button 5 is pressed and released with the lid body 3 screwed together, the compression and restoring action of the elastic body 7 for suction will release the lid. Fluid is drawn into the syringe tube 6 due to air pressure fluctuations within the syringe tube 6.

Next, with the liquid stored in the dropper tube 6,
Turn the lid body to loosen the screw, remove the lid body 3 from the mouth of the container body 1, and insert the dropper tube 6 to the position where you want to drip the liquid.
Go with it.

To remove the aspirated liquid, press pushbutton 5
By pressing , the suction elastic body 7 is compressed, thereby allowing the liquid in the dropper tube 6 to be taken out to the outside.

In the above, an annular rib 21 is provided protrudingly on the inner peripheral surface of the cylindrical portion 8 of the suction elastic body 7, and the dropper tube 6 is provided with an annular rib 21.
This annular rib 2 is in close contact with the base end 6a of
1 acts as a so-called O-ring, and air does not leak when the suction elastic body 7 is compressed, resulting in good sealing.

Furthermore, when taking out the liquid from inside the dropper tube 6, even if the tip 6b of the dropper tube 6 is pressed inadvertently, the annular stopper 18 restricts the rise of the dropper tube 6 and stops it at a fixed position, so the absorption function is maintained. will not be damaged.

Furthermore, since the dropper tube 6 is fitted into the cylindrical portion 8 and fixed at a fixed position, the dropper tube 6 does not move during use, which is convenient when extracting liquid.

Further, according to the embodiment, the base end 6a of the dropper tube 6 is configured to be able to slide in the vertical direction while being in pressure contact with the annular rib 21 provided on the cylindrical portion 8 of the elastic body 7 for suction. Because of this, the dropper tube 6
When sliding, the dropper tube 6 moves up and down with its base end 6a supported by the annular rib 21, so even if the dropper tube 6 moves up and down, the base end 6a of the dropper tube 6 and the cylindrical portion 8 A liquid-tight state between the two is reliably maintained by the annular rib 21. Furthermore, in the embodiment, a dropper tube 6 is provided in the cylindrical portion 8 of the suction elastic body 7.
The proximal end 6a of the device is slidable to ensure its liquid-tightness, and it is constructed with a small number of parts, which has the advantage of reducing costs.

FIG. 4 shows another example of the suction elastic body 25 of this invention.
A cylindrical part 27 on which an annular rib 26 is formed is located on the upper part of the inner cover 9, and the thickness of the cylindrical part 27 can be increased to increase its elasticity. . Note that this embodiment can also provide the same effects as those of the above-mentioned embodiment.

As explained above, according to the lid with a dropper of this invention, the following excellent effects can be obtained.

By simply inserting the proximal end of the dropper tube into the cylindrical part, a suction chamber for sucking up liquid can be formed.
The work of installing the dropper tube becomes significantly easier, and workability can be improved and work costs can be reduced accordingly. Moreover, since the dropper tube is formed to such a length that its tip contacts the bottom of the container body and its base end is located within the cylindrical portion of the suction elastic body when the lid is screwed on, the proximal end of the dropper tube is With the dropper tube fitted into the cylindrical part and attached to the guide hole of the support part, the tip of the dropper tube can be brought into constant contact with the bottom of the container body, thereby allowing the suction elastic body and the dropper tube to The dropper tube can be held in contact with the bottom without intervening a spring or the like that urges them apart from each other, and the number of parts that make up the lid can be reduced. It is.

In this way, when the dropper tube is installed, its tip is in contact with the bottom of the container body, so the liquid can be dispensed with the dropper tube always in contact with the bottom of the container. As a result, the pourable level can be reliably lowered to the bottom of the container, and almost all of the liquid in the container can be aspirated.
In addition, this makes it possible to reliably tolerate variations in the mounting state of the dropper tube and lid and variations in the wall thickness of the bottom of the container while maintaining contact between the dropper tube and the bottom of the container, making the container airtight. can be done reliably. Therefore, since variations can be tolerated to a large extent, the yield of products can be increased and manufacturing costs can be reduced.

Furthermore, when focusing on the sealing performance of the suction chamber, in the present invention, a liquid-tight state is reliably maintained by the action of the annular rib protruding from the inner peripheral surface of the cylindrical part of the suction elastic body. Moreover, since the cylindrical part itself is made of the same material as the annular rib and exhibits elasticity in the same way as the annular rib, it is possible to improve the sealing performance of the annular rib and also to increase its durability. can be improved.
On the other hand, in the present invention, when attaching the lid, the tip of the dropper tube is in contact with the bottom of the container body.
The proximal end slides upward inside the cylindrical part of the suction elastic body, and the proximal end is fixed in the cylindrical part at the attachment position of the lid, but in this case, the proximal end of the dropper tube is Since it slides on the annular rib inside the cylindrical part, the annular rib reliably maintains the liquid-tight state between the proximal end of the syringe tube and the cylindrical part, and the syringe tube slides on the annular rib in the upward position. Since the dropper tube is supported by the annular rib while remaining stationary, the dropper tube does not fall down due to the elastic restoring force of the annular rib, and when the lid is attached, the lid itself is able to apply force in the axial direction of the dropper tube. Never happened.

In addition, especially in the present invention, an annular stopper is provided on the lower side of the support part of the dropper tube to engage with the support part and restrict the rise of the dropper tube, so when taking out liquid from inside the dropper tube, etc. Even if you inadvertently press the tip of the dropper tube against a container, etc. and lift the dropper tube itself, the annular stopper of the dropper tube will not touch the support part of the inner lid as the dropper tube rises. Because it hits and limits the rise of the dropper tube,
The proximal end of the dropper tube does not rise too high inside the suction elastic body, and the dropper tube does not come off the cylindrical part of the suction elastic body and lose its function as a dropper.

Taking these points into account, when using the lid, the dropper tube is clamped to the cylindrical part of the suction elastic body and fixed in a fixed position when the lid is attached. Because of the structure, liquid will not be sucked into the dropper tube unless the push button is pressed, and it is possible to accurately measure the liquid by pushing the button and pressing the button. Furthermore, even though the dropper tube is designed to be retracted into the cylindrical portion of the suction elastic body, the position at which the dropper tube can be retracted is limited by the annular stopper provided on the dropper tube. , even if you press the tip of the dropper tube against a container or the like to raise the dropper tube when dispensing liquid, the annular stopper of the dropper tube will not support the inner lid as the dropper tube rises. Since the rise of the dropper tube is restricted by hitting the upper part, the proximal end of the dropper tube will not rise too high inside the elastic body for suction, and the dropper tube will not come off the cylindrical part of the elastic body for suction and the dropper without impairing its functionality. In addition, since the base end of the dropper tube is fitted into the cylindrical part and clamped, the dropper tube does not shake during use, making it easy to use when dispensing liquid. There are also some advantages.

[Brief explanation of the drawing]

Figures 1 to 3 show one embodiment of this invention; Figures 1 and 2 are longitudinal sectional views;
The figure is an enlarged sectional view of the main part, and FIG. 4 is a longitudinal sectional view showing another example of the suction elastic body. A...Lid with dropper, 1...Container body, 1a
... Bottom, 3 ... Lid, 4 ... Through hole, 5 ... Push button, 6 ... Dropper tube, 6a ... Base end, 6
b... Tip, 7... Elastic body for suction, 8... Cylindrical part, l... Length, 18... Annular stopper, 21
... Annular rib, 25 ... Elastic body for suction, 26 ...
Annular rib, 27...cylindrical part.

Claims (1)

[Scope of utility model registration request] A through hole 4 is formed in the top plate 3a of the lid 3 which is screwed into the mouth 2 of the container body 1, and a support part 12 is provided with a guide hole 12a penetrating vertically inside the lid 3. A push button 5 which can be operated from the outside and is slidable in the vertical direction is set in the through hole 4, and an elastic body 7 for suction that can be compressed and restored is elastically deformed by the push button 5 inside the lid body 3. and a dropper tube 6 is provided in the guide hole 12a of the support part 12 of the lid body 3, and the dropper tube 6 is provided so as to be slidable in the vertical direction with its base end fitted in the suction elastic body 7 in a liquid-tight manner, The suction elastic body 7 has a cylindrical portion 8 into which the proximal end of the syringe tube 6 is fitted liquid-tightly and slidably in the axial direction, and has an inner peripheral surface of the cylindrical portion 8, A plurality of annular ribs 21 are provided that protrude along the axial direction of the cylindrical portion 8 and press against the outer circumferential surface of the proximal end of the dropper tube 6, and when the lid 3 is screwed on, the tip 6b of the dropper tube 6 is It is formed in such a length that it comes into contact with the bottom part 1a of the container body 1 and has a proximal end 6a located inside the cylindrical part 8 of the suction elastic body 7, and is located below the support part 12 in the dropper tube 6. A lid with a dropper, characterized in that an annular stopper 18 protruding from the side thereof engages with the support portion 12 and restricts the rise of the dropper tube 6.