JP5126838B2 - Liquid discharge container - Google Patents

Description

  The present invention relates to a liquid discharge container.

  Various types of liquid discharge containers are known in which a pump is attached to a container body. For example, the neck and neck are raised from the upper end edge of the cylindrical trunk having the same diameter on the inner circumference via the shoulder, and the circumference is fitted to the inner circumference bottom so as to be slidable and raised. A container body with a movable bottom wall that closes the lower end opening of the part and a cylinder at the lower end in the mouth-and-neck part are detachably attached to the container body, and can be moved up and down in an upward biased state from the upper end of the cylinder There is a type in which a pump having an ejection head is detachably mounted on the upper end of a protruding stem. These are configured so that the movable bottom wall rises when the liquid in the container is sucked and discharged by a pump, and can be used particularly effectively when the stored liquid does not like contact with air.

  Since this type of conventional liquid discharge container can be formed by mounting an existing pump on a container body with a movable bottom wall, it is easy to manufacture and is preferably used. A relatively large gap exists between the cylinder and air remains in the portion when the liquid is filled. That is, if liquid is injected into the trunk from above the container body and the pump is attached, air remains in the mouth and neck.

  Therefore, even if the amount is small, there is a disadvantage that the air contacts the liquid. In addition, in order to remove the air remaining in the pump when the container is used, a so-called priming operation is performed in which the ejection head is repeatedly moved up and down several times, but thereafter, the number of priming operations increases because air from the mouth and neck is drawn. In addition, there may be a problem that a liquid containing air is ejected. As a countermeasure, it is possible to prevent air from remaining by pre-injecting the liquid to the extent that the liquid is filled between the cylinder in the mouth and neck, but even if the movable bottom wall moves to the highest position, that part It is difficult to discharge the liquid, and there is a disadvantage that the liquid that is not discharged until the end remains and is wasted.

  The present applicant has already proposed a liquid discharge container in consideration of such points (see, for example, Patent Document 1). The liquid discharge container has a flange protruding from the outer periphery of the cylinder with a small gap from the inner peripheral surface of the mouth and neck, and an annular seal protrusion that protrudes from the outer peripheral edge of the flange to the lower end of the inner periphery of the mouth and neck. It is configured to be liquid-tightly engaged.

This liquid discharge container can isolate the air in the container body to the upper part of the flange, can eliminate the air in the part containing the liquid, can prevent mixing of the air into the jet liquid after the priming operation, The filled liquid in the barrel is excellent in that it can be discharged efficiently and has no waste.
JP 2004-001817 A

  The present invention further improves the above-described liquid discharge container, and more reliably separates the air in the upper part of the container from the liquid. As a result, it is possible to prevent the mixture of air in the jet liquid after the priming operation, The present invention proposes an excellent liquid discharge container that can prevent contact with air and can eliminate the presence of useless liquid that cannot be discharged in the mouth and neck.

The first means is configured as follows. That is, a container body A having a movable bottom wall A ₃ having a peripheral edge fitted to the inner peripheral bottom of the body 2 so as to be slidable and a cylinder B ₂ at the lower end in the container neck 4 are suspended. And a pump B mounted on the container body A, and a liquid discharge container configured such that the movable bottom wall A ₃ rises as the liquid in the container body A decreases due to the operation of the pump B.
A window hole 31 through which the cylinder B ₂ is inserted is provided at the center of a lid plate part 30 in which an inverted skirt-like part 33 constituting a peripheral part is slidably fitted to the inner peripheral upper part of the container body 2. A lid member A ₄ is provided which has a cylindrical portion 32 standing upright in the mouth and neck portion 4 from the peripheral lid plate portion 30 ;
A downward step portion 61 formed in the cylinder B _2, is brought into contact with an upward stepped portion 34 formed in the cylindrical portion 32 the inner surface configured to permit depression of the lid member A _4, the abutment surface, to seal the upper and lower seal As a part,
As the discharge mechanism for discharging the pressurized air between the cover plate part 30 and the liquid surface to the upper side of the cover plate part 30 when the inverted skirt-like part 33 is lowered by attaching the pump B to the container body A, A check valve v that unilaterally communicates from below to above the cover plate portion 30;
A discontinuous protrusion 35 for sliding the outer surface on the opposing surface is provided on either the inner surface of the mouth / neck portion 4 or the outer surface of the cylindrical portion 32, and a gap is provided between the opposing surface and the outer surface on either side. A projecting annular ridge 5 is provided and is used as a descent prevention means for preventing further descent at the descent position by mutual engagement .

The second means is configured as follows. That is, at the first hand stage was recessed a housing recess 22 for accommodating the lower end of the cylinder B ₂ mounted on the central portion of the movable bottom wall A _3.

According to the present invention, it is possible to reliably discharged to the upward pressurized air present in the lid member A ₄ downward when mounting the pump B in the presence of the lid member A _4, part accommodating the liquid Even if it is filled with liquid that does not like contact with air, it is possible to avoid inconvenience to the liquid as much as possible, and to reduce the number of priming operations, and in the ejected liquid after priming operation It is possible to prevent the air from mixing in. Furthermore, since the liquid in the filled body can be efficiently discharged, there is no waste, and since it can be formed by a simple structural change compared to the conventional product, there are various effects such as less increase in manufacturing cost. It is what has.

  When the discharge mechanism is configured as a check valve v that unilaterally communicates from the lower side to the upper side of the cover plate part 30, after the air is discharged after the pump B is mounted, the liquid and air in the discharge mechanism part There is an advantage that contact can be reliably prevented.

  When the check valve v is configured as the reverse skirt-shaped portion 33 that forms the peripheral edge of the lid plate portion 30, there is a manufacturing advantage that the check valve v can be formed integrally with the lid plate portion 30.

When the lid member A ₄ is constructed by standing up a cylindrical portion 32 that rises in the mouth and neck portion 4 from the lid plate portion 30 at the periphery of the window hole 31, the mouth and neck are lowered when the lid member A ₄ is lowered. Guided by the portion 4, it is possible to stably descend, and there is an advantage that the structure can be simplified by forming a descent preventing means and a pressing means using the cylindrical portion 32.

  When the lowering prevention means is constituted by a locking projection provided on the inner surface of the mouth-and-neck portion 4 and an engaging projection provided on the outer surface of the tube portion 32, the inner surface of the mouth-neck portion 4 and the outer surface of the tube portion 32 There is an advantage that the object can be achieved with a simple structure of forming each locking protrusion and engaging protrusion, and for example, an engaging plate constituting a lowering prevention means is suspended from the back surface of the shoulder portion 3 of the container body A. On the other hand, there is no need for a complicated structure such as erecting a locking plate that engages with the engagement plate from the upper surface of the lid plate portion 30.

Either one of the locking projection and the engagement projection is constituted by a discontinuous protrusion 35 that slides the outer surface on the opposing surface, and the other is provided with a gap between the opposing surface and the outer surface. In the case where the projecting annular ridge 5 is formed, the cylindrical portion 32 can slide and descend on the mouth-and-neck portion 4 to allow the lid member A ₄ to descend more stably. For this reason, when both are engaged, there is an advantage that the air discharged to the upper side of the cover plate portion 30 can be released further upward.

The downward step portion 61 formed on the cylinder B ₂ is brought into contact with the upward step portion 34 formed on the inner surface of the cylindrical portion 32 so that the lid member A ₄ can be pushed down, and the contact surface is sealed up and down. When configured as a seal portion, there is an advantage that the contact between the outside air and the liquid can be reliably prevented even in this portion.

When the storage recess 22 for storing the lower end of the cylinder B ₂ attached to the center of the movable bottom wall A ₃ is provided, regardless of the protruding width of the lower end of the cylinder B ₂ below the cover plate 30, There is an advantage that the stored liquid can be discharged without waste.

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

  1 to 3 show an example of a liquid discharge container 1, and the liquid discharge container 1 includes a container body A and a pump B.

The container body A is formed of a synthetic resin or the like, and is a main body configured such that the neck portion 4 is erected from the upper end edge of the cylindrical body portion 2 having the same diameter from the top to the bottom through the shoulder portion 3 from the top to the bottom. It consists of a part A ₁ and a bottom cap A ₂ fitted to the lower end of the main part A ₁ , and a movable bottom wall A ₃ is mounted inside. The bottom cap A ₂ extends from the lower end edge of the fitting tube portion 10 fitted to the lower end of the outer periphery of the body portion 2 to extend the bottom wall 11 that closes the lower end opening of the body portion. A supporting cylinder portion 12 is provided to support A ₃ at a predetermined position.

The movable bottom wall A ₃ has a shape in which a peripheral edge is fitted to the inner peripheral bottom of the body portion 2 so as to be slidable, and is attached to the peripheral edge of the bottom plate 20 in an upward and downward skirt shape. The formed cylindrical sliding portion 21 is extended. Further, the central portion of the bottom plate 20 is formed in a storage recess 22 in which the lower end of the cylinder can be stored with little clearance. Further, a short cylinder 23 is vertically suspended from the center of the bottom surface of the bottom plate 20 on the support cylinder portion 12 of the bottom cap.

The pump B is also made of synthetic resin or the like, and includes a mounting cap B ₁ , a cylinder B ₂ , and an operating member B ₃ . The mounting cap B ₁ is for mounting and fixing the pump B to the container body A. A flange-shaped top plate 51 is extended inward from the upper end of the peripheral wall 50 screwed to the outer periphery of the mouth neck portion 4. A guide tube 52 is erected on the peripheral edge of the upper surface 51. Then, a packing p is interposed between the top plate 51 and the mouth / neck portion 4 to achieve liquid-tightness at this portion, and the container body A is mounted.

Cylinder B ₂ has an upper end fitted into the inner surface of fitting cylinder 53 erected from the inner peripheral edge of top plate 51 of mounting cap B ₁ , and extends downward from the upper edge of fitting cylinder 53 and then descends downward. It is fixed by the locking part. And it hangs down in the mouth-neck part 4 with a gap between the inner surface of the mouth-neck part 4, and the lower end part projects from the upper part in the container body A. The cylinder B ₂ has an upper portion other than the fitting portion as a large-diameter portion 60 and a lower end portion formed in a small-diameter portion 62 having a reduced diameter via a downward stepped portion 61. The downward step portion 61 is for pushing down a lid member, which will be described later, and constitutes a part of a seal portion that blocks the top and bottom of the lid member.

The actuating member B ₃ is provided so as to be able to be pushed down in an upward biased state, and includes a stem 70 in which a piston (not shown) slidably fitted to the inner periphery of the cylinder B ₂ is connected to the lower part, A discharge head 71 is fitted on the upper end of the stem 70.

The pump B is provided with the respective members in addition the suction valve provided inside the cylinder B ₂ by (not shown) and the ejection valve provided on the stem 70 in the (not shown), the actuating member B ₃ vertically thereby discharging the liquid in the cylinder B ₂ from the discharge port 72 of the ejection head 71 by moving, and a known pump mechanism for sucking the liquid in the container body a in the cylinder B _2.

  The pump B in the above example is merely an example, and is not limited to the above example as long as the cylinder at the lower end is suspended in the mouth and neck and attached to the container body, and the liquid in the container body can be discharged. Various types can be adopted.

In such liquid discharge container described above, in the present invention is provided with the lid member A _4. The lid member A ₄ has a window hole 31 through which the cylinder B ₂ is inserted at the center of the lid plate part 30 whose peripheral part is slidably fitted in the upper part of the container body 2. A cylindrical portion 32 is erected from the upper surface of the peripheral lid plate portion 30 in the mouth-neck portion 4. The cover plate portion 30 has a donut plate shape, and is configured as a reverse skirt-like portion 33 having an outer peripheral edge recessed in a U-shape downwardly and extending its outer edge portion obliquely upward. The outer edge portion is slidably fitted into the inner surface of the container body portion 2.

The window hole 31 and the cylindrical portion 32 have a diameter through which a cylinder can be inserted, and the inner peripheral upper portion of the cylindrical portion 32 is increased in diameter through an upward step portion 34, and the cylinder is formed in a small diameter portion below the upward step portion 34. The small diameter portion 62 at the lower end of B ₂ can be inserted, and the large diameter portion 60 above the cylinder B ₂ can be inserted into the large diameter portion above the upward stepped portion 34. Further, when the pump B is mounted on the container body A, the upward step portion 34 of the lid member A ₄ and the downward step portion 61 of the cylinder B ₂ are engaged to push down the lid member A ₄ .

The lid member A ₄ is provided with a falling prevention means for preventing any further downward in the lowered position. When the lid member A ₄ is provided with a cylindrical portion 32, a locking projection on the neck inner surface, it may be configured as to engage both provided engaging projection in the cylindrical external surface. In this example, a pair of upper and lower discontinuous ridges 35 serving as engaging protrusions are provided on the outer peripheral upper portion of the cylindrical portion 32, and an annular shape serving as a locking protrusion that protrudes from the inner peripheral lower end of the mouth-and-neck portion 4. The protrusion 5 is configured to engage with the lowered position. The lower discontinuous ridge 35 is configured to get over the annular ridge 5 and sandwich the annular ridge 5 between the upper discontinuous ridge 35. Each discontinuous ridge 35 is configured to be slidable on the inner peripheral surface of the mouth-and-neck portion 4, and the annular ridge 5 protrudes from the outer peripheral surface of the cylinder B ₂ with a protruding width with a gap. Therefore, in the engaging portion between each discontinuous ridge 35 and the annular ridge 5, air is configured to be able to pass above and below. The lowering prevention means is not limited to the form of this example, and various forms can be adopted. For example, an engagement ridge may be provided on the outer surface of the cylindrical portion 32, and a locking ridge may be provided on the inner surface of the mouth and neck portion 4 to be engaged, and the lower surface of the shoulder 3 of the container body A may be engaged. The locking plate with the locking projection protruding is suspended, while the engagement plate with the engaging projection protruding from the upper surface of the lid plate portion 30 is erected, and when the lid member A ₄ is pushed down, You may comprise so that an engagement protrusion may engage.

Further, a discharge mechanism for discharging air upward between the liquid surface and the cover plate 30 is lowered by depression of the cylinder B ₂ during the pump mounting. As the discharge mechanism, a check valve v that unilaterally communicates from below to the upper side of the cover plate portion 30 can be employed. In this example, the reverse skirt-shaped portion 33 shown in FIG. 1 is employed as the check valve v. As the check valve v, in addition to the shape of the reverse skirt-like portion 33, various requirements can be adopted. For example, a valve hole drilled in the lid plate portion 30 is fitted to the outer surface of the cylindrical portion 32. An open / close valve type that can be opened and closed by an open / close valve plate connected to the mounted cylinder via a hinge can be used.

As the discharge mechanism, a discharge mechanism can be provided by providing a gap between the cylinder B ₂ and the cylindrical portion 32. In this case, since the upper and lower lid member A ₄ is large width of the gap after the pump mounting is not preferable becomes a communicating state, narrow preferably enough to the liquid in a state where the liquid in the gap is filled after the pump mounting does not move, for example, 0.1 to 0.2 mm can be preferably employed, and may be appropriately selected depending on the physical properties of the containing liquid such as viscosity. When this gap discharge mechanism is adopted, it is preferable to use it together with the check valve v.

In the liquid discharge container 1 configured as described above, when the pump B is mounted, the container body A in which the lid member A ₄ and the movable bottom wall A ₃ are mounted is previously filled with the stored liquid. As a filling method, for example, after the lid member A ₄ is fitted to the upper end of the main body A ₁ with the bottom cap A ₂ removed, the movable bottom wall A ₃ is moved to the lower part of the inner periphery of the main body A ₁ as shown in FIG. The movable bottom wall A ₃ is moved to a predetermined position by fitting the bottom cap A ₂ and pushing up the short cylinder 23 by the support cylinder portion 12. Next, liquid is filled from the mouth and neck 4. At this time, the lid member A ₄ is in its periphery highest position, not engaged in a respective discontinuous ridge 35 and the annular ridge 5. The accommodating liquid the liquid surface is as filled is positioned a little lower level than the cover member A _4.

Next, the pump B is mounted on the container body A. When threadedly lowering the peripheral wall 50 of the mounting cap B ₁ to neck 4 the outer periphery, a downward stepped portion 61 of the cylinder B ₂ pushes the lid member A ₄ engages the upwardly stepped portion 34 of the lid member A _4. Its communication of the upper and lower part of the case downward stepped portion 61 and an upward stepped portion 34 to be sealed, the inverted skirt-like portion 33 of the air remaining in the lid member A ₄ below as a check valve v pressurized It is discharged upward. At this time, it is also conceivable that a small amount of the liquid moves upward with the air. When the mounting cap B ₁ is screwed, the lower discontinuous protrusion 35 in the cylinder gets over the annular protrusion 5 of the mouth-neck portion 4, and the upper discontinuous protrusion 35 and the lower discontinuous protrusion 35. the annular ridge 5 engages between the lid member a ₄ is prevented from descending further by a negative pressure in the container body a by reduction of the liquid when the pump B operation. Further, the air discharged to the upper side of the cover plate portion 30 is discharged to the upper side through the engaging portion between each discontinuous protrusion 35 and the annular protrusion 5.

Then, in the lower portion of the lid member A _4, which is discharged in the air by mounting a pump B as shown in FIG. 1, a state in which only the liquid filled. If the pump B is operated from this state to discharge the stored liquid, the inside of the container body A below the lid member A ₄ becomes negative pressure, and the movable bottom wall A ₃ rises. At this time, the lid member A ₄ is not lowered by the lowering prevention means. When all the liquid has been discharged, the movable bottom wall A ₃ rises to a position where it abuts against the lid member A ₄ as shown in FIG. 3, and at this time, the cylinder B is placed in the storage recess 22 of the movable bottom wall A _{3. 2} protruding lower ends are accommodated, and liquid can be discharged without waste.

It is a partially cutaway side view of a liquid discharge container. Example 1 It is explanatory drawing at the time of mounting | wearing a container body with a pump. Example 1 FIG. 6 is a partially cutaway side view showing a state in which the stored liquid has been discharged. Example 1

Explanation of symbols

1 ... Liquid discharge container A ... Container body
A ₁ ... Body part 2 ... Body part, 3 ... Shoulder part, 4 ... Mouth and neck part, 5 ... Projection
A ₂ … Bottom cap
10 ... Fitting cylinder, 11 ... Bottom wall, 12 ... Support cylinder
A ₃ ... movable bottom wall
20 ... bottom plate, 21 ... sliding part, 22 ... receiving recess, 23 ... short tube
A ₄ ... Lid member
30 ... Cover plate part, 31 ... Window hole, 32 ... Cylinder part, 33 ... Reverse skirt-like part, 34 ... Upward stepped part,
35 ... Discontinuous ridge v ... Check valve B ... Pump
B ₁ … Installation cap
50 ... peripheral wall, 51 ... top plate, 52 ... guide tube, 53 ... fitting tube
B ₂ ... Cylinder
60 ... large diameter part, 61 ... downward stepped part, 62 ... small diameter part
B ₃ ... Actuating member
70 ... Stem, 71 ... Discharge head, 72 ... Discharge port p ... Packing

Claims (2)

Barrel (2) in the peripheral bottom container body having a sliding raisable fitted so a movable bottom wall of the peripheral portion (A ₃₎ in a (A), the lower end to the container body opening neck (4) in the cylinder (B ₂₎ and a pump mounted on the container body (a) and vertically with (B), a pump (B) decreases with a movable bottom wall of the liquid in the container body (a) by the operation of (a ₃ ) In a liquid discharge container configured to rise,
A window through which the cylinder (B ₂ ) is inserted into the center of the cover plate portion (30) in which the reverse skirt-like portion (33) constituting the peripheral portion is slidably fitted to the inner periphery of the container body (2) Provided with a lid member (A ₄ ) provided with a hole (31), and a cylindrical portion (32) that stands up in the mouth neck (4) from the lid plate portion (30) at the periphery of the window hole (31) ,
Downward stepped portion formed in the cylinder (B ₂₎ (61), the tubular portion (32) upwardly stepped portion formed on the inner surface is in contact with (34) and configured to permit depression of the lid member (A _4), The contact surface is configured as a seal part that seals the top and bottom,
When the inverted skirt-like part (33) is lowered by mounting the pump (B) on the container body (A), the pressurized air between the cover plate part (30) and the liquid surface is supplied to the cover plate part (30 ) As a discharge mechanism for discharging upward, the check plate (v) unilaterally communicates from below the lid plate (30) downward,
A discontinuous protrusion (35) for sliding the outer surface on the facing surface is provided on either the inner surface of the mouth / neck portion 4 or the outer surface of the tube portion (32). A liquid discharge container, characterized in that an annular ridge (5) projecting with a gap therebetween is projected and used as a descent prevention means for preventing further descent at the lowered position by mutual engagement . Movable bottom wall (A _Three ) Cylinder (B ₂ 2. A liquid discharge container according to claim 1, wherein a storage recess 22 for storing the lower end of the storage recess 22 is provided.

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