JP6475003B2 - Liquid storage container - Google Patents

Description

The present invention relates to a liquid storage container, and more particularly, to a technique that can easily attach and detach an inner plug to and from the container mouth and can also keep the fitting strength in a suitable state.

  As the liquid storage container as described above, the applicant previously proposed Japanese Patent Application Laid-Open No. 2001-158456 (Patent Document 1). This relates to the liquid storage container and the refill container for the container, and the liquid storage container has the following contents.

  That is, the liquid storage container of Patent Document 1 includes a container main body, an inner stopper attached to the mouth of the container main body, and an outer cap that covers the inner stopper and is attached to the mouth of the container main body. , A screw is formed on the lower outer surface of the mouth portion of the container main body, a locking projection is provided on the upper outer surface, and a plurality of upward engaging projections are provided in the circumferential direction at the upper and lower boundary positions of the mouth portion. Each of the inner plugs is provided with a predetermined interval, the inner protrusion of the inner plug is provided with an engagement protrusion and an engagement protrusion to be engaged when the inner plug is mounted, and the lower end of the inner plug has the engagement protrusion. And when the inner plug is removed, the inner plug is rotated in the circumferential direction to ride on the engaging protrusion, and the inner plug is lifted to lock the both locking protrusions. An engaging protrusion to be released is provided, and an internal thread of the external cap is formed on the inner surface of the outer cap. A. And according to this liquid storage container, it can be easily removed by rotating the inner plug in the circumferential direction, and there is an effect that the stored liquid can be extracted and refilled more efficiently than in the past ( Paragraph 0012).

  By the way, in the liquid storage container, although the inner plug can be removed by rotating in the circumferential direction, the engagement protrusion of the inner plug is engaged with the container main body in order to release the locking of both locking protrusions. It took a considerable amount of force to turn the protrusion, and it was difficult to attach and detach. In addition, there is a problem that when the inner plug is attached or detached, the fitting strength between the inner plug fitted by the engagement of both engaging protrusions and the mouth of the container body is always constant, and the degree of freedom of the fitting strength does not work. It was.

JP 2001-158456 A

Therefore, in view of the above-described conventional problems, the present invention can easily attach and detach the inner plug and also has a degree of freedom in the fitting strength of the inner plug. It aims at providing the liquid storage container which can keep fitting with a part suitably.

In order to solve the above-mentioned problem, the invention according to claim 1 is a container body, an inner plug to be attached to the mouth portion of the container body, and an inner stopper that covers the inner stopper and is attached to the mouth portion of the container body. A liquid storage container, wherein a screw is formed on a lower outer surface of the mouth portion of the container body, and a female screw is formed on the inner surface of the outer cap. The mouth portion is composed of a large-diameter lower half portion on which the male screw is formed and a small-diameter upper half portion, and the lower half portion and the upper half portion are formed in an annular tapered surface inclined upward, and the upper portion A locking projection is provided on the outer surface of the half, and a plurality of upward engaging projections are provided in the circumferential direction at predetermined intervals on the lower outer surface serving as a boundary position with the lower half, The inner plug has an inner cylinder provided with a diameter that can be fitted from the outside to the upper half of the mouth of the container body, and the inner cylinder. And an outer cylinder that is concentrically provided with a gap between the inner cylinder and the inner cylinder. A plurality of mating protrusions are provided at predetermined intervals in the circumferential direction, and locking protrusions that are locked to the inner surface above the engaging protrusions when the container plug is attached and the inner stopper are attached. The inner plugs are rotated in the circumferential direction when the inner plugs are removed, and the engagement protrusions of the inner plugs are placed on the engagement protrusions of the container body to lift the inner plugs. locking has become a releasable, further comprising a part that the locking projection is provided in the inner cylinder, a predetermined slit up and down between the engaging projection and the engaging projections circumferentially adjacent The outer cylinder has a lower end that is in contact with the tapered surface of the container body when the inner plug is mounted, and moves upward along the tapered surface by pressing from the outside. , Wherein the engagement of both locking projection is in releasable.

According to a second aspect of the present invention, in the first aspect, a cylindrical cap boss portion is integrally provided at the center of the lower surface of the top wall of the outer cap, and an extraction port is provided at the central portion of the top wall of the inner plug. A cylindrical leak prevention portion is provided around the extraction port to be fitted with the cylindrical cap boss portion when the outer cap is mounted. The leak prevention portion has a shape in which the tip side is curved outwardly. It is formed with a tapered surface inclined so that the inner diameter gradually increases from the point of contact so that the inner peripheral surface of the base side contacts the vertical outer peripheral surface of the boss portion from the point of contact to the base end. It is characterized by being.

The invention described in claim 3 is characterized in that, in claim 2, knurls are formed on the outer surface of the outer cylinder.

This invention is as described above. According to the invention described in claim 1, the mouth portion of the container main body includes a lower half portion having a large diameter on which the male screw is formed and an upper half portion having a small diameter. The lower half and the upper half are formed in an upwardly inclined annular taper surface, the outer half of the upper half is provided with a locking projection, and the lower part serving as a boundary position with the lower half A plurality of upward engaging protrusions are provided on the outer surface in the circumferential direction at a predetermined interval, and the inner plug is provided with a diameter that can be fitted from the outside to the upper half of the mouth of the container body. An inner cylinder and an outer cylinder provided concentrically with a gap between the inner cylinder and an outer cylinder on the outer side of the inner cylinder. plurality engaging projection to be engaged when mounting the plug in the circumferential direction, with are provided at predetermined intervals, of the container body to the inner surface of the above engaging projection Kakaritome突A locking projection for locking when mounting the inner plug is provided, let ride the inside plug when the inner plug detachment the engaging projection of the plug in the rotated circumferentially engaging projection of the container body The locking projections of the inner cylinder can be released by lifting the inner plug and the locking projections of the inner cylinder are further provided, and the engaging projections are adjacent in the circumferential direction. A slit is formed vertically between the engaging projection and a predetermined length, and the outer cylinder has a lower end in contact with the tapered surface of the container body when the inner plug is mounted, and the outer surface is pressed against the tapered surface by pressing from the outside. Since the locking of both the locking projections can be released, when removing the inner plug, the inner plug is rotated in the circumferential direction so that the engagement protrusion of the inner plug is moved to the container main body. By moving over the engaging projection of the mouth portion, the locking projection of the inner plug and the locking projection of the container main body can be released. When the inner plug is rotated in the circumferential direction to cause the engagement protrusion of the inner plug to ride on the engagement protrusion of the container main body, the engagement protrusion is displaced radially outward by the slit. Even with a light force, it can go smoothly, and the locking of both locking projections can be released more easily without requiring the same force as the conventional one, so that the inner plug can be easily attached and detached. Moreover, even if the inner plug is not rotated as described above, by applying a pressing force from the outside of the inner plug, the lower end of the inner plug is moved up along the taper surface and lifted so as to be pulled out. There is an effect that the locking of the protrusion can be released.

According to the invention described in claim 2, a cylindrical cap boss portion is integrally provided at the center of the lower surface of the top wall of the outer cap, and an extraction port is provided at the center of the top wall of the inner plug. A cylindrical leak prevention portion is provided around the extraction port to be fitted to the cylindrical cap boss portion when the outer cap is attached. The leak prevention portion is formed in a shape whose front end is curved outward. In addition, since the inner peripheral surface of the base side is formed in a tapered surface inclined so that the inner diameter gradually increases from the point that contacts the vertical outer peripheral surface of the boss portion toward the base end, The contact resistance between the vertical outer surface of the boss part and the inner peripheral surface of the leak prevention part can be reduced, and when the outer cap is removed, it can be easily detached from the inner plug, and the base side is perpendicular to the boss part as before. The surface is in the same vertical inner surface as the outer peripheral surface, and is in surface contact. Inside plug there is an effect that there is no fact that deviate with Body to the outside cap.

  According to the third aspect of the present invention, since the knurl is formed on the outer surface of the outer cylinder, there is an effect that the inner plug can be easily grasped when the inner plug is removed, and the sliding can be stopped more easily.

It is a front view of the state which removed the inner stopper of the liquid storage container shown in one embodiment of this invention. It is a top view same as the above. It is the A section enlarged view of FIG. FIG. 4 is an enlarged partial front sectional view taken along line IV-IV in FIG. 2 in a state where an inner stopper is attached to the mouth of the liquid storage container same as above. It is an expansion front sectional view of an inside plug same as the above.

  Hereinafter, a liquid container according to an embodiment of the present invention will be described with reference to the drawings.

  1 to 3, reference numeral 1 denotes a liquid storage container made of a synthetic resin. The liquid storage container 1 includes a container main body 2 for storing a liquid such as a cosmetic liquid. The mouth 3 of the container body 2 is formed such that the upper half is thinner than the lower half, and an external thread 4 is formed on the outer surface of the lower half. A locking projection 5 is formed in an annular shape on the outer surface in the middle of the upper half. In addition, a plurality of engaging protrusions 6 are provided at predetermined intervals in the circumferential direction on the lower outer surface of the upper half that is the boundary position between the upper half of the small diameter and the lower half of the large diameter. . As shown in FIG. 1, these engaging projections 6 have a substantially triangular shape upward, and the upper end on the pointed end side is located in the vicinity of the locking projection 5 and the outer surface thereof is the lower half. The thickness does not protrude outward from the outer surface. Further, the outer surface between the lower half portion where the external thread 4 is formed and the upper half portion where the engaging protrusion 6 is formed is formed as an upwardly inclined annular taper surface 7. An inner stopper 11 is attached to the upper half of the mouth 3.

  As shown in FIGS. 4 and 5, the inner plug 11 is curved so that the lower end is slightly inwardly narrowed, and an inner cylinder 12 having a diameter that can be fitted to the mouth 3 of the container body 2 from the outside, and the inner cylinder The lower end is slightly longer, and an outer cylinder 13 provided concentrically on the outer side with a gap between the inner cylinder 12 and the lower surface of the top wall 14 is integrally provided. A locking projection 5 and a locking projection 15 that is locked when mounted are provided on the inner surface in the middle of the inner cylinder 12 so as to be annular, and are engaged with the lower end of the inner cylinder 12 below the locking projection. An engaging protrusion 16 is provided that fits and engages when the protrusion 6 and the inner plug 11 are attached. As shown in FIG. 5, the engaging protrusions 16 have a substantially triangular shape downward, and a plurality of engaging protrusions 16 are provided at predetermined intervals in the circumferential direction. It is possible to release the locking of the locking protrusions 5 and 15 by riding on the protrusion 6 and lifting the inner plug 11.

  It is a site | part in which the latching protrusion 15 of the inner cylinder 12 was provided, Comprising: Between the engagement protrusion 16 adjacent to the circumferential direction and the proximal end on the opposite side from the lower end of the engagement protrusion 16 on the opposite side, it is a circumference. A substantially rectangular slit 18 having a predetermined width in the direction is formed with a predetermined length in the vertical direction, and the engagement protrusion 16 that engages with the engagement protrusion 6 on the container main body 2 side is highly elastic in the radial direction. I have to. That is, by providing the slit 18, the engagement protrusion 16 can be elastically displaced in the radial direction, and can be easily engaged even with a light force in the engagement with the engagement protrusion 6. The fitting strength of the inner cylinder 12 with respect to the mouth portion 3 can be appropriately maintained. For this reason, when it is desired to increase the fitting strength of the inner cylinder 12 in product design, for example, to shorten the length of the slit 18 in the vertical direction, and conversely to weaken it, it is necessary to increase the length. It is possible to set the inner cylinder 12 to an appropriate fitting strength by adjusting the cut length of 18 well.

  The outer cylinder 13 has a straight shape with the lower end not curved inward like the inner cylinder 12, but when the inner plug 11 is mounted, the lower end is a taper of the container body 2 as shown in FIG. The corner is in contact with the lower portion of the surface 7. When pressed from the outside, the lower end of the inner plug 11 moves upward along the tapered surface 7 while being bent inward, so that the locking projections 5 and 15 can be released. That is, the taper surface 7 has a function of changing the pressing force from the outside to an upward force and making the locking projection 15 of the inner stopper 11 easily come off from the locking projection 5 of the container body 2.

  A small extraction port 20 is provided at the center of the top wall 14 so that the stored liquid does not come out vigorously. On the outer surface of the lower half portion of the outer cylinder 13, a vertical and flat knurled 21 is formed. The knurl 21 is provided for easy gripping when removing the inner plug 11 and for preventing slippage in the rotational direction. An outer cap 25 has an inner cylinder 26 and a lower end slightly longer than the inner cylinder, and an outer cylinder 27 provided on the outside with a gap between the inner cylinder 26 and the lower surface of the top wall 28. The screw 29 is fitted to the mouth portion 3 so as to cover the inner plug 11 when not in use and is provided on the inner surface of the inner cylinder 26, and is screwed with the male screw 4 provided on the mouth portion 3 of the container body 2. It is attached by. A cylindrical cap boss portion 30 is integrally provided at the center of the lower surface of the top wall 28, and a cylindrical leakage prevention portion 17 provided correspondingly around the extraction port 20 of the inner plug 11 is provided on the boss portion. The outer cap 25 is fitted when the outer cap 25 is mounted. The leak prevention portion 17 is formed in a shape in which the distal end side is curved outward in a round shape, and the proximal end from the point where the inner peripheral surface on the base portion side comes into point contact with the vertical outer peripheral surface of the boss portion 30. The tapered surface 17a is inclined so that the inner diameter gradually increases toward the end. As a result, the contact resistance between the vertical outer peripheral surface of the boss portion 30 and the inner peripheral surface of the leakage preventing portion 17 can be reduced, and when the outer cap 25 is removed, the inner plug 11 can be easily detached, as before. The base side becomes the same vertical inner peripheral surface as the vertical outer peripheral surface of the boss portion 30 and comes into surface contact, and the inner plug 11 does not get stuck to the outer cap 25 due to the contact resistance.

  As shown in FIG. 4, an engagement convex portion 31 is provided at a position opposite to each other in the circumferential direction at the lower end of the inner cylinder 26 of the outer cap 25, and is attached to the mouth portion 3 of the container body 2. At the stage where the screw 29 and the male screw 4 have been screwed together, it engages with an engaging recess 32 provided below the male screw 4 of the mouth. As shown in detail in FIGS. 2 and 3, the engaging concave portion 32 includes a small convex portion 32 a that can be engaged with the engaging convex portion 31 after the engagement of the female screw 29 and the male screw 4 is finished, and a circle. It is formed by large convex portions 32b that are arranged adjacent to each other in the circumferential direction and cannot be overcome.

  In the liquid container 1 having the above-described configuration, in order to use the stored liquid, the outer container 25 is rotated in the circumferential direction to disengage the engaging convex portion 31 and the engaging concave portion 32 from each other. In addition, the female screw 29 and the male screw 4 are unscrewed and removed. Then, since the mouth part 3 of the container main body 2 to which the inner plug 11 is attached appears, the liquid can be extracted from the extraction port 20 of the inner plug. After use, the outer cap 25 is put on the mouth portion 3 of the container body 2, the female screw 29 of the inner cylinder 26 is screwed into the male screw 4, and the engaging convex portion 31 is engaged with the engaging concave portion 32. When the engaging convex portion 31 and the engaging concave portion 32 are engaged, a clicking sound is generated, so that it can be seen that the screwing is completed, and the outer cap 25 again covers the inner plug 11 as in the original state. It will be in the state attached to the opening | mouth part 3 of the main body 2. FIG.

  When the stored liquid is exhausted and it is desired to remove the inner plug 11 for refilling, etc., with the outer cap 25 removed, place the inner plug 11 in the circumferential direction by placing a finger on the part where the knurl 21 is located. Move. By this rotation, the engaging protrusion 16 provided at the lower end of the inner cylinder 12 of the inner plug 11 is gradually provided along the inclined surface of the engaging protrusion 6 provided at the mouth 3 and engaged therewith. Then, the inner plug 11 is lifted and the locking projection 15 is disengaged from the locking projection 5. As a result, the inner plug 11 is disengaged from the mouth 3, and thereafter, the refilling liquid can be stored at any time from the upper end opening of the mouth 3.

  When the engaging protrusion 16 rides on the engaging protrusion 6, the slit 18 is formed in the inner tube 12 of the inner plug 11, so that the engaging protrusion 16 is displaced radially outward. Goes smoothly even with light force. Then, after the refilling is completed, the inner stopper 11 may be fitted again toward the mouth 3 of the container body 2, whereby the engaging protrusion 16 of the inner stopper 11 is engaged with the engaging protrusion 6 of the mouth 3. The engagement projections 6 are engaged and engaged, and the engagement projections 15 are engaged with the engagement projections 5 by this engagement, and the mounting is completed. After that, the outer cap 25 may be attached as described above.

  Further, when removing the inner plug 11, not only a method of rotating the inner plug 11 in the circumferential direction but also another method is possible. That is, the lower outer surface of the inner plug 11 is pressed from the outside. That is, as described above, a finger, for example, a thumb and a middle finger is applied to a portion where the knurl 21 is present and pressed from the outside. By this pressing, the lower end of the outer cylinder 13 arranged with a gap between it and the inner cylinder 12 is pushed up along the tapered surface 7 while being bent inward with the gap, and the locking projection 5 is engaged by this pushing up. It is released from the stop projection 15 and released. Thus, the inner plug 11 can be removed by pressing instead of turning.

  The liquid storage container 1 and the inner stopper 11 shown in this embodiment are only a preferable example, and it is needless to say that the design of details such as the shape and the number of the slits 18 can be changed as appropriate in the implementation. .

DESCRIPTION OF SYMBOLS 1 Liquid storage container 2 Container main body 3 Mouth part 4 Male screw 5,15 Locking protrusion 6,16 Engagement protrusion 11 Inner plug 12 Inner cylinder 13 Outer cylinder 14 Top wall 20 Extraction port 25 Outer cap 29 Female thread 31 Engagement Convex part 32 Engaging concave part

Claims (3)

A container main body, an inner stopper attached to the mouth of the container main body, and an outer cap that covers the inner stopper and is attached to the mouth of the container main body. In the liquid storage container in which a male screw is formed and a female screw is formed on the inner surface of the outer cap.
The mouth portion of the container body is formed of a large-diameter lower half portion on which the male screw is formed and a small-diameter upper half portion, and the lower half portion and the upper half portion are formed in an annular tapered surface inclined upward. In addition, a locking projection is provided on the outer surface of the upper half, and a plurality of upward engaging projections are provided at predetermined intervals in the circumferential direction on the lower outer surface serving as a boundary position with the lower half. And
The inner plug is concentrically provided with a gap between the inner cylinder provided with a diameter that can be fitted from the outside in the upper half of the mouth portion of the container body, and the inner cylinder on the outer side of the inner cylinder. An outer cylinder provided,
The inner cylinder has a plurality of engaging protrusions that are engaged with the engaging protrusions of the container main body and the inner stopper at the lower end in the circumferential direction at a predetermined interval. A locking protrusion for locking the container main body and the inner stopper when the inner stopper is attached is provided on the inner surface of the container, and when the inner stopper is removed, the inner stopper is rotated in the circumferential direction to engage the inner stopper. Is able to release the locking of both locking protrusions by lifting the inner stopper by riding on the engaging protrusion of the container body ,
Further, in the portion provided with the locking projection of the inner cylinder , a slit is formed with a predetermined length vertically between the engagement projection and the engagement projection adjacent in the circumferential direction,
The lower end of the outer cylinder is in contact with the tapered surface of the container body when the inner plug is mounted, and moves upward along the tapered surface by pressing from the outside, so that the locking of the locking protrusions can be released. A liquid container characterized by that. A cylindrical cap boss is integrally provided at the center of the lower surface of the top wall of the outer cap, an extraction port is provided at the center of the top wall of the inner plug, and an outer cap is mounted around the extraction port. A cylindrical leak prevention part is sometimes provided to be fitted with the cylindrical cap boss part, and the leak prevention part is formed in a shape in which the distal end side is curved outward and the inner peripheral surface on the base side is a boss. The liquid storage container according to claim 1, wherein the liquid storage container is formed in a tapered surface inclined so that the inner diameter gradually increases from a point of contact with the vertical outer peripheral surface of the portion toward the base end.   The liquid container according to claim 2, wherein a knurl is formed on an outer surface of the outer cylinder.

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