JP4811854B2 - Liquid ejector - Google Patents

Description

  The present invention relates to a liquid discharger, and more particularly, to a liquid discharger suitable for storing and discharging stored items that do not like contact with outside air and does not like contact with light.

  There has been proposed a liquid ejector that stores and discharges stored items while avoiding contact with outside air as much as possible (see, for example, Patent Document 1).

  The liquid ejector includes a container body having a movable bottom wall that is erected from a trunk portion through a shoulder portion through a shoulder portion, and has a peripheral portion slidably fitted to the inner circumferential bottom portion of the trunk portion, and the mouth A pump having a lower end cylinder suspended from the neck and mounted on the container body is provided, and the movable bottom wall rises as the liquid in the container body decreases due to the operation of the pump.

A container provided with a light-shielding layer has also been proposed in order to prevent the stored items from coming into contact with light (see, for example, Patent Document 2). As shown in the drawing, the container shown here has a light-shielding label formed by forming a light-shielding coating layer containing a coloring material on the outer periphery of a cup-shaped container. Or the same light-shielding label is affixed on the outer periphery of the trunk | drum of a bottle-shaped container.
JP 2004-1817 A JP-A-10-101149

  In the liquid ejector shown in Patent Document 1, the movable bottom wall rises as the liquid decreases, so that the storage chamber in the container can always be maintained in a state where the liquid is filled, and the contact with air can be prevented as much as possible. It has high performance. Some items stored in this type of dispenser not only dislike contact with the outside air, but also dislike light irradiation, and there is a possibility of deterioration or performance deterioration when exposed to light.

  In the present invention, the shape of the light-shielding layer formed by the light-shielding label or the like described in the above cited reference 2 is further improved, and the stored items are protected by reliably blocking light from the stored items in the container. In particular, the present invention proposes a liquid ejector that can completely block light from stored items before use, and can exhibit sufficient light-shielding properties even after use. In addition, the present invention proposes a liquid ejector that can prevent components from being transmitted from the container body before use in addition to light-shielding properties, and that can easily open the sealed container body housing portion.

  The liquid ejector of the present invention includes a container body and a pump.

  The container body has a shape in which the mouth and neck are erected from the cylindrical body through the shoulder, and a male screw is provided around the outer periphery of the mouth and neck. In addition, the inner bottom of the body is provided with a movable bottom wall fitted with a peripheral edge so as to be slidable and raised so that the movable bottom wall rises with a negative pressure when the liquid in the container decreases with discharge. Yes. Therefore, the inner circumference of the container body is formed to have the same diameter from top to bottom at least at the portion where the movable bottom wall slides. The container body is formed of a synthetic resin, and as its specific material, for example, a resin conventionally used in this type of discharger such as polyethylene, polypropylene, polyethylene terephthalate, etc. can be used, and it can be selected and used as appropriate. To do.

  The peripheral edge is fixed to the back of the shoulder of the container body, and the lower end opening of the mouth and neck is closed to provide the first light shielding layer. The first light-shielding layer has a light-shielding property that blocks external light, and the outer periphery is configured to cover at least the outer periphery of the shoulder so as to cover the entire back surface of the shoulder. Preferably, the outer peripheral edge is extended to the upper end of the body for the purpose of sufficiently supplementing the critical part with the second light shielding layer. Further, the central portion is a portion that is pressed and broken by the lower end of the pump in use, and a recess into which the lower end of the pump can be inserted is preferably formed in that portion.

  The first light-shielding layer is made of a material or thickness that has sufficient light-shielding properties and can be relatively easily pressed and broken. For example, a synthetic resin film in which a metal foil or a metal thin film layer is laminated, a light shielding film, or the like can be given. As a metal constituting the metal thin film layer, aluminum is typically suitable, but various materials such as iron, copper, nickel, and other alloys can be used in consideration of factors such as compatibility with the contents or presence or absence of toxicity. Can be adopted. As the light-shielding film, a material obtained by kneading and dispersing a black pigment, dye, or an inorganic substance such as iron oxide, which is excellent in light-shielding property, in the same kind of base resin as the resin forming the container body can be used. As a means for fixing the first light shielding layer to the container body, an appropriate fixing means such as welding, adhesion, transfer or the like can be adopted as the first light shielding layer formed in a predetermined shape. Preferably employed.

  Further, a second light shielding layer is also provided on the container body. The second light-shielding layer is also formed of the same material, form, and fixing means as the first light-shielding layer except that it can be broken relatively easily, but it does not need to be broken, so that the metal is directly deposited on the outer periphery of the body. It is also possible to employ a layer, and it is also possible to directly apply a resin composition containing the pigment and the like, and it is also possible to form an intermediate layer on the body portion. In addition, when giving decoration, a display of a brand name, description, etc. to the outer periphery of a trunk | drum, what is necessary is just to carry out to the surface of a 2nd light shielding layer by appropriate application means, such as printing directly via a protective layer.

  A third light shielding layer may be provided on the movable bottom wall. When the liquid ejector is placed in an upright state, the first and second light shielding layers can sufficiently block light to the container body storage portion. The presence of the third light shielding layer ensures that light can be blocked. The third light shielding layer can also be formed by the same material, form and fixing means as the second light shielding layer.

  In addition, when each said 1st thru | or 3rd light shielding layer uses the laminated structure of metal thin film layers, such as a metal vapor deposition layer and metal foil, or a metal thin film layer, and a synthetic resin layer, the component permeation | transmission prevention function is exhibited simultaneously. . This component permeation function is a function that prevents volatilization by passing through the wall of the container body when the stored item is a highly volatile liquid, and is generally called gas barrier property. This is effective when all the light-shielding layers 3 are formed of this metal thin film layer.

  The pump is attached to the container body with a mounting cap screwed to the outer periphery of the container body neck so that the lower end cylinder is suspended in the container body, and protrudes from the upper end of the cylinder. A press-down head is fitted to the upper end of the stem, and a known pump mechanism is built in which the liquid in the container is sucked up and discharged from the discharge port of the head by moving the press-down head up and down. There is no limitation on the type of built-in pump mechanism.

  In order to press and break the first light-shielding layer at its lower end, the pump is initially positioned above a predetermined position, is screwed down upon opening, and is configured to press-break the first light-shielding layer at its lower end. Yes. Therefore, it is preferable to provide a spacer for preventing the mounting cap from being lowered. The spacer may be interposed between the mounting cap and the container body or the pedestal on the container body so that the spacer is easily mounted.

As a first means for solving the above problems, the neck portion 4 is erected from the trunk portion 2 through the shoulder portion 3, and the peripheral portion is fitted to the inner peripheral bottom portion of the trunk portion 2 so as to be slidable. The container body A having the movable bottom wall 7 and the pump B attached to the upper end of the container body A by screwing the mounting cap 21 around the outer periphery of the mouth / neck 4 are provided. In the liquid ejector configured such that the movable bottom wall 7 rises as the liquid is reduced, the pump B is screwed to a position where it can be screwed down, and the first light shielding layer 10 and the second light shielding layer are attached to the container body A. The first light-shielding layer 10 covers the back surface of the shoulder portion 3 and closes the lower end opening of the mouth and neck portion 4. The first light shielding layer 10 has a recessed portion 13 into which the lower end portion of the pump B can be inserted. The second light-shielding layer 11 is provided so as to cover the body portion 2, and the cutting blade 2 provided at the lower end thereof by screwing down the pump B. Liquid dispenser for a more first light-shielding layer 10 is broken in the container body A and pump B is characterized by being composed as communicated to 7.

  As a second means, a third light shielding layer 12 is provided so as to cover the back surface of the movable bottom wall 7 in the first means.

  As a third means, in the second means, each of the first light shielding layer 10, the second light shielding layer 11 and the third light shielding layer 12 may be a single metal thin film layer or a metal thin film layer and a synthetic resin layer. It was comprised by lamination.

  The liquid discharger according to the present invention is suitable when the first light-shielding layer 10 and the second light-shielding layer 11 are provided on the container body A, so that external light can be blocked and the stored liquid is easily affected by light. . Further, since the liquid storage part of the container body A is closed at the upper end by the first light shielding layer 10, it is possible to reliably prevent contact with outside air before opening, and the movable bottom wall 7 reduces liquid even after opening. Therefore, there is no possibility that the outside air will enter the container body, and it is suitable for the storage of storage items that are inconvenient for contact with the outside air. Furthermore, when opening, the first light shielding layer 10 is broken by a simple operation of screwing down the mounting cap 21 of the pump and the inside of the container body A and the inside of the pump B are communicated, so that the handling operation is also easy.

  When the third light-shielding layer 12 is provided so as to cover the back surface of the movable bottom wall 7, even when the container is lifted during use and the bottom is exposed to external light, the light-shielding action on the stored liquid can be surely exhibited.

  When each of the first light-shielding layer 10, the second light-shielding layer 11, and the third light-shielding layer 12 is constituted by a single metal thin film layer or a laminate of a metal thin film layer and a synthetic resin layer, the gas barrier of the container body A Since the property is further strengthened, a more stable state of the stored liquid can be reliably maintained.

When the concave portion 13 into which the lower end portion of the pump B can be inserted by recessing the central portion of the first light shielding layer 10 is temporarily inconvenient for the first light shielding layer 10 when the first light shielding layer 10 is broken. Even if a crack occurs, it can remain in the recess 13 and the inconvenience such as impairing the light shielding property from above due to the first light shielding layer 10 can be prevented more reliably.

  When the cutting blade 27 is provided at the lower end of the pump B, the first light shielding layer 10 can be easily broken, the opening operation becomes smoother, and the thickness of the first light shielding layer 10 is required. Accordingly, even if it is thick, the opening operation is easy.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 3 show an example of the liquid ejector of the present invention. The liquid ejector 1 includes a container body A and a pump B. FIG.

  The container body A is made of a synthetic resin, and the mouth neck 4 is erected from the upper end of the cylindrical body 2 via the shoulder 3, and a male screw 5 is provided around the mouth neck 4. ing. In addition, the bottom lid 6 is fitted by closing the lower end opening of the body 2. The bottom lid 6 has a fitting tube portion 6b erected from the peripheral edge of the upper surface of the lid plate portion 6a that closes the lower end opening of the barrel portion 2 and is fitted to the lower end portion of the inner circumference of the barrel portion 2, and the upper surface of the lid plate portion 6a. A support cylinder 6c is erected integrally at the center. Further, a movable bottom wall 7 is provided on the inner bottom portion of the body portion 2 so that the peripheral edge portion is fitted so as to be slidable. The movable bottom wall 7 includes a sliding portion 7a fitted to the inner periphery of the body portion 2 so as to be slidable, and extends from the sliding portion 7a to the bottom plate portion 7b. The sliding portion 7a is configured by projecting an upper skirt and a lower skirt from the upper and lower sides of a cylindrical base portion, respectively. The bottom plate portion 7b is configured by protruding the peripheral portion upward in an annular shape. A pedestal 8 for supporting a spacer to be described later is fitted and fixed on the shoulder 3. The pedestal has a flange-like top wall 8b extending inwardly from the upper end of the peripheral wall 8a with the lower end abuttingly placed on the peripheral edge of the upper surface of the shoulder 3 and from the inner peripheral edge of the top wall 8b to the outer periphery of the mouth neck 4 An inner peripheral wall 8c fitted to the lower part of the projecting ridge 30 is suspended.

  The container body A is provided with three light shielding layers, a first light shielding layer 10, a second light shielding layer 11, and a third light shielding layer 12. The first light shielding layer 10 has a peripheral edge fixed to the back surface of the shoulder 3 and closes the lower end of the mouth / neck 4. In the illustrated example, the peripheral portion of the first light shielding layer 10 is extended to a portion reaching the upper end portion of the body portion 2 in order to reliably cover the critical portion with the second light shielding layer 11. Further, a concave portion 13 is provided in the central portion of the first light shielding layer 10, and a lower end portion of a cylinder, which will be described later, can be inserted into the concave portion 13. The second light-shielding layer 11 is provided so as to cover the outer periphery of the body portion, covers the entire liquid storage portion except the lower surface with the first light-shielding layer 10, and the liquid ejector 1 is placed on a placement site such as a desktop. In this state, the first and second light shielding layers are configured to block outside light. The third light shielding layer 12 is provided on the lower surface of the movable bottom wall 7 and is provided except for the lower skirt portion of the sliding portion 7a. The first light-shielding layer 10 to the third light-shielding layer 12 are formed of a synthetic resin film in which an aluminum thin film layer is laminated. The first light-shielding layer 10 and the second light-shielding layer 11 are each formed by insert molding when the container body 2 is formed. The third light shielding layer 12 is formed by insert molding when the movable bottom wall 7 is formed.

  The pump B has a known pump mechanism and pumps up and discharges the liquid in the container body A. The mounting cap 21 is provided with a female screw 20 which is screwed into the male screw 5 on the outer periphery of the mouth-and-neck portion 4 on the inner periphery. Are attached to the container A in a state where the lower end cylinder 22 is suspended in the mouth neck 4. Further, a push-down head 24 is fitted to the upper end of a stem 23 that protrudes from the upper end opening of the cylinder 22 so as to be pushed in an upward biased state, and the push-down head 24 is provided with a discharge port 25 that communicates with the inside of the container body A. Yes. Then, the liquid in the container body A is sucked up from the suction port 26 at the lower end of the cylinder 22 and discharged from the discharge port 25 through the stem 23 by the operation of the built-in pump mechanism by the vertical movement operation of the push-down head 24.

  An annular cutting blade 27 is suspended around the suction port 26 at the lower end of the cylinder 22. The cutting blade 27 is provided so as to protrude slightly downward from the bottom surface of the cylinder 22 and hangs down in the recess 13 of the first light shielding layer 10. Further, a spacer 28 is interposed between the mounting cap 21 and the pedestal 8 so that the mounting cap 21 cannot be further screwed down unless the spacer 28 is removed. The spacer 28 has an open ring shape and is configured to be detachable from the side of the mouth and neck 4. In the figure, 29 indicates packing.

  The liquid ejector 1 configured as described above is enlarged in FIG. 2 (b) when the mounting cap 21 is screwed down after the spacer 28 is removed from the state of FIG. 1 shown in the enlarged view of FIG. 2 (a). In the state shown in FIG. 3, the first light shielding layer 10 is cut by the cutting blade 27 at the lower end of the cylinder 22, and the inside of the container body A and the inside of the pump B are communicated. By moving the push-down head 24 up and down from this state, the liquid in the container body A is sucked up from the suction port 26 at the lower end of the cylinder 22 by the action of the built-in pump mechanism, and discharged from the discharge port 25 of the push-down head 24.

It is a half sectional view of the present invention liquid discharger. Example 1 It is explanatory drawing explaining the effect | action of this invention liquid discharger. Example 1 It is a half sectional view of the state after opening of the present invention liquid ejector. (Example 1).

Explanation of symbols

2 ... trunk, 3 ... shoulder, 4 ... mouth and neck, 7 ... movable bottom wall, 10 ... first light shielding layer,
11 ... 2nd light shielding layer, 12 ... 3rd light shielding layer, 13 ... Recessed part, 21 ... Mounting cap, 27 ... Cutting blade,
A ... container body, B ... pump,

Claims (3)

The mouth and neck (4) is erected from the trunk (2) through the shoulder (3), and the movable bottom wall (2) is fitted to the inner circumferential bottom of the trunk (2) so that the peripheral edge can be slid up. 7) and a pump (B) mounted on the upper end of the container body (A) by screwing a mounting cap (21) around the outer periphery of the mouth and neck (4). ), The pump (B) is screwed at a position where the pump (B) can be screwed down in the liquid discharger constructed so that the movable bottom wall (7) rises as the liquid in the container body (A) is reduced by the operation of At the same time, the container body (A) is provided with the first light shielding layer (10) and the second light shielding layer (11), and the first light shielding layer (10) covers the back surface of the shoulder (3) and the neck (4) ) The lower end opening is closed, the central part is recessed downward, and a recess (13) into which the lower end of the pump (B) can be inserted is provided. The second light shielding layer (11) Cover and provide Ri, and the inside pump more first light-shielding layer on the cutting edge having a (B) at its lower end by threadedly down (27) (10) is broken the container body (A) in the pump (B) A liquid ejector configured to communicate with each other.   The liquid ejector according to claim 1, wherein a third light shielding layer (12) is provided so as to cover the back surface of the movable bottom wall (7).   Each said 1st light shielding layer (10), 2nd light shielding layer (11), and 3rd light shielding layer (12) are comprised by the lamination | stacking of the single layer of a metal thin film layer, or a metal thin film layer, and a synthetic resin layer. 2. The liquid ejector according to 2.

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