JP5808998B2 - Discharge tap - Google Patents

Description

  The present invention relates to a discharge stopper, and more particularly, to a discharge stopper suitable for a medicine (eye drop) container or the like.

  The eye drop container or the like is equipped with a discharge stopper for separating the liquid contained in the container body. (For example, see Patent Document 1)

  The discharge stopper mounted on the eye drop container described in Patent Document 1 has a cylindrical shape with a lower end closely fitted to the inner periphery of the container body neck and neck and a discharge hole at the tip.

  In the case of the conventional discharge plug as described in the above-mentioned Patent Document 1, there is a possibility that, for example, when germs or the like adhere to the tip spout, it may flow back into the container.

Japanese Patent Application Laid-Open No. 11-155828

  In the present invention, there is no risk of backflow into the container even when bacteria or the like adhere to the tip, and the structure of the structural members is simple and easy to assemble, and a solid structure can be maintained after the assembly. A simple discharge tap.

The first means is configured as follows. That is, the outer peripheral lower part is liquid-tightly fitted to the inner periphery of the mouth and neck part 41 of the container body B having the squeezable body part 40, and has a top-end cylindrical shape with the lower end opened, and the discharge port at the top part. The nozzle base A1 having an opening 18 and a flexible and elastic material fitted and fixed in the nozzle base A1 define a liquid passage p1 from the container body B to the discharge port 18, and the nozzle And a valve member A2 that defines an air passage p2 extending from the outside air introduction hole 17 formed in the peripheral wall 10 of the base A1 to the inside of the container body B. One side from the container body B to the discharge port 18 is provided in the middle of the liquid passage p1. A discharge valve provided with a discharge valve v1 that communicates with the intake valve v2 that communicates unilaterally from the outside into the container body B in the middle of the ventilation path p2 ,
The valve member A2 is fixed to the nozzle base A1 by fitting and fixing the peripheral edge of the fixed partition wall 33 projecting from the cylindrical part 30 having a crested cylindrical shape with a lower end opening on the inner periphery of the nozzle base A1. An intake valve v2 is formed on the inner surface of the peripheral wall 10 of the discharge valve body 32 and the nozzle base body A1 projecting from the upper end portion of the cylindrical portion 30. The discharge valve seat 13 and the discharge valve v1 are formed respectively, and the cylinder part is formed through a through hole 34 constituting a liquid passage p1 formed in the cylinder part 30 between the fixed partition wall 33 and the discharge valve body 32. The outside air introduction hole 17 which comprises the ventilation path p2 is drilled under the fixed division wall 33, and the inside and outside 30 communicate.

The second means is configured as follows. That is, in the first means, flange-like ribs 35 project from the outer periphery of the cylindrical portion 30 between the fixed partition wall 33 and the intake valve body 31 with a gap therebetween, The peripheral edge was fitted to the inner periphery of the peripheral wall 10 of the nozzle base A1, and the concave portion 15 constituting the air passage p2 was formed in the inner surface of the peripheral wall 10 of the nozzle base A1.

The third means was configured as follows. That is, in the first means or the second means , a locking means for fitting and locking the valve member A2 at a predetermined position in the nozzle base A1 is provided between the nozzle base A1 and the valve member A2. It was.

The fourth means is configured as follows. That is, in the third means, the locking means suspends the locking column 21 that contacts and locks the lower surface of the upper surface of the valve member A2 on the lower surface of the top of the nozzle base A1.

The fifth means is configured as follows. That is, in the third means or the fourth means, the locking means forms the lower end portion on the inner peripheral edge of the peripheral wall 10 of the nozzle base A1 at the large diameter portion 22, so that the locking means is formed at the upper end thereof. A flange-like portion provided with a stepped portion 23 and a lower portion of the outer periphery of the cylindrical portion 30 of the valve member A2, and abuttingly locked to the lower surface of the locking stepped portion 23 and provided with a vent hole 38 constituting the vent path p2. The locking plate portion 37 is used.

  According to the present invention, the liquid passage p1 extending from the container body B to the discharge port 18 is provided, and the air passage p2 extending from the outside air introduction hole 17 formed in the peripheral wall 10 of the nozzle base A1 to the container body B is provided. A discharge valve v1 that is unilaterally communicated from the container body B to the discharge port 18 in the middle of the liquid passage p1, and an intake valve v2 that is unilaterally communicated from the outside to the container body B in the middle of the ventilation path p2. In addition, since they are formed integrally with the valve member A2, even if germs or the like may adhere to the tip of the discharge stopper, there is no risk that they will be sucked into the container body, and the contained liquid is particularly eye drops In the case of an eye drop container such as the above, the presence of miscellaneous bacteria is not preferable, which is preferable. Further, a simple assembly operation of fitting the valve member A2 to the nozzle base A1 is possible, the structure is simple, and there is an advantage that it can be manufactured at low cost.

  The valve member A2 is fixed to the nozzle base A1 by fitting and fixing the peripheral edge of the fixed partition wall 33 projecting from the cylindrical part 30 having a crested cylindrical shape with a lower end opening on the inner periphery of the nozzle base A1. An intake valve v2 is formed on the inner surface of the peripheral wall 10 of the discharge valve body 32 and the nozzle base body A1 projecting from the upper end portion of the cylindrical portion 30. The discharge valve seat 13 and the discharge valve v1 are formed respectively, and the cylinder part is formed through a through hole 34 constituting a liquid passage p1 formed in the cylinder part 30 between the fixed partition wall 33 and the discharge valve body 32. When the outside air introduction hole 17 which communicates the inside and outside 30 and forms the ventilation path p2 below the fixed partition wall 33 is formed, the structure is extremely simple, the manufacture is easy, and the assembling operation is also easy.

  Flange-shaped ribs 35 project from the outer periphery of the cylindrical portion 30 between the fixed partition wall 33 and the intake valve body 31 at intervals, and the outer peripheral edge of each flange-shaped rib 35 is the inner periphery of the peripheral wall 10 of the nozzle base A1. When the concave portion 15 constituting the air passage p2 is provided in the inner surface of the peripheral wall 10 of the nozzle base A1, the valve member A2 is fixedly fixed to the nozzle base A1 in a stable state. In addition, there is an advantage that the valve member A2 can be easily assembled to the nozzle base A1.

  When a locking means for fitting and locking the valve member A2 at a predetermined position in the nozzle base A1 is provided between the nozzle base A1 and the valve member A2, the valve member A2 is positioned at an appropriate position with respect to the nozzle base A1. There is an advantage that it can be assembled easily and accurately.

  When a locking column 21 is provided on the lower surface of the top of the nozzle base A1 so as to contact and lock the lower surface of the upper surface of the valve member A2, the valve member A2 can be easily assembled at a predetermined position with respect to the nozzle base A1. In particular, there is an advantage that the upper surface of the cylindrical portion 30 can be locked at a predetermined position, and the discharge valve body 31 protruding from the upper end portion of the cylindrical portion 30 can be appropriately locked at the pressure contact position of the discharge valve seat 13. .

  The locking means forms the lower end portion of the inner periphery 10 of the peripheral wall 10 of the nozzle base A1 at the large diameter portion 22, so that it protrudes into the locking step portion 23 formed at the upper end of the nozzle base A1 and the lower outer periphery of the cylindrical portion 30 of the valve member A2. In the case of being configured with a flange-shaped locking plate portion 37 provided with a vent hole 38 that is in contact with and locked to the lower surface of the locking step portion 23 and that forms the ventilation path p2, the locking step With the presence of the portion 23 and the flange-like locking plate portion 37, the valve member A2 can be stably fitted and locked at a predetermined position of the nozzle base A1 with a wide contact area, and is made of a flexible and elastic material. For example, it is possible to reliably prevent the valve member A2 from being fitted and fixed in the nozzle base A1 in a state where the valve member A2 is slightly contracted by compression from below, for example. Therefore, it is possible to achieve good pressure contact of the discharge valve body 32 to the discharge valve seat 13 and good pressure contact of the intake valve body 31 to the intake valve seat 36. Further, by providing the upper locking means constituted by the locking pillars 21 together, the valve member A2 can be more securely fitted and fixed at the appropriate position, and the respective functions can be maintained well. .

It is a partially cutaway front view of an eye drop container equipped with a discharge stopper. (First embodiment) It is a top view of the eye drop container equipped with the discharge stopper. (First embodiment) It is a partially cutaway side view of an eye drop container equipped with a discharge stopper. (First embodiment) It is a principal part expanded sectional view of the eyedrop container equipped with the discharge stopper. (First embodiment) It is a principal part expanded sectional view of the eyedrop container equipped with the discharge stopper. (Second embodiment) It is a principal part expanded horizontal sectional view of the latching board part part of a stopper member. (Second embodiment)

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

  FIG. 1 shows a first embodiment of a discharge plug A. The discharge plug A is fitted to a container body B and includes a cap C, which is configured as an eye drop container as a whole.

  The container body B is configured by raising the mouth and neck portion 41 from the compressible trunk portion 40.

  The discharge plug A is composed of a nozzle base A1 and a valve member A2.

  The nozzle base A1 is formed of a synthetic resin or the like, has a top-bottomed cylindrical shape with the top wall 11 extending from the top edge of the peripheral wall 10, and the outer peripheral lower portion of the peripheral wall 10 extends to the inner periphery of the mouth neck portion 41 of the container body B. It is fitted in an airtight / liquidtight manner. The lower end of the inner periphery of the peripheral wall 10 is provided with an annular recess that is recessed in an annular shape. In the illustrated example, the flange 12 projecting at a predetermined position on the outer periphery of the peripheral wall 10 is brought into contact with and locked to the upper surface of the container body neck portion 41, and the lower peripheral wall 10 is fitted to the inner periphery of the container body neck portion 41. . Further, a discharge valve seat 13 in the form of an annular ridge is provided on the upper inner periphery of the peripheral wall 10, and a locking ridge 14 is provided on a predetermined position on the lower inner periphery of the discharge valve seat 13. doing. Further, a vertically long concave portion 15 constituting the air passage p2 is formed in the inner peripheral lower portion of the peripheral wall 10 below the locking protrusion 14. In addition, an outside air introduction hole 17 is formed in the peripheral wall 10 at the position of the upper end portion in the recess 15. A discharge port 18 is opened in the top wall 11. The discharge port 18 is opened in a discharge cylinder 19 having an upper end opened at the center of the top wall 11, and supports the locking column 21 via a plurality of circumferentially projecting support ribs 20 at the lower part of the discharge cylinder 19. Yes.

  The valve member A2 is formed of a flexible and elastic material such as an elastomer, and includes a cylindrical portion 30 having a top-bottomed cylindrical shape with a lower end opening, and has a flange shape outward from the lower end of the outer periphery of the cylindrical portion 30. An intake valve body 31 is integrally protruded, and a flange-like discharge valve body 32 is integrally protruded outward from the upper end of the outer periphery of the cylindrical portion 30. Further, a fixed partition wall 33 is provided so as to protrude from the upper outer periphery of the cylindrical portion 30 so that the outer peripheral edge is fitted and fixed to the inner periphery of the peripheral wall 10 of the nozzle base A1. A through hole 34 is formed in the cylindrical portion 30 between the fixed partition wall 33 and the discharge valve body 32 so that the inside of the cylindrical portion 30 communicates with the outside between the fixed partition wall 33 and the discharge valve body 32. ing. Further, a plurality of flange-like ribs 35 are provided protruding from the outer periphery of the cylindrical portion 30 below the fixed partition wall 33.

  Then, the discharge member A is formed by inserting and fitting the valve member A2 from the lower end opening of the nozzle base A1. In the discharge plug A, the fixed partition wall 33 climbs over and engages the upper surface of the locking protrusion 14 with the upper surface of the valve member A2 contacting the lower surface of the locking column 21, and the discharge valve body 32 discharges. A discharge valve v <b> 1 is configured in pressure contact with the upper surface of the valve seat 13. Further, the intake valve body 31 is in pressure contact with the intake valve seat 36 formed by the lower surface of the peripheral wall 10 of the nozzle base A1 to constitute the intake valve v2. Further, the outer peripheral edge of each flange-like rib 35 is in pressure contact with the inner surface of the peripheral wall 10 of the nozzle base A1 to assist the stable fitting of the cylindrical portion 30. Further, a fluid passage p1 is formed from the lower end opening of the cylindrical portion 30 through the cylindrical portion 30 to the discharge port 18 through the through hole 34 at the upper end of the cylindrical portion 30 and the discharge valve v1. An intake passage p2 is defined from the introduction hole 17 through the recess 15 to the container B via the intake valve v2.

  In the present invention, a locking means for fitting and locking the valve member A2 at a predetermined position in the nozzle base A1 is provided between the nozzle base A1 and the valve member A2. In this example, the valve member A2 The locking means is configured by bringing the upper surface into contact with the lower surface of the locking column 21.

Cap C is the neck 41 the outer circumference, it is screwed to the large-diameter portion 50a of the peripheral wall 50 bottom, upright the small diameter portion 50 c of the peripheral wall 50 through the flange 50b from the upper end of the large diameter portion 50a, a small diameter portion 50 The top wall 51 is extended from the upper end edge of c . Further, a rod plug 52 that is detachably fitted into the discharge cylinder 19 is provided from the center of the back surface of the top wall 51.

  In the case of using the eye drop container configured as described above, for example, if the cap C is unscrewed from the state shown in FIG. The discharge valve v <b> 1 is pushed open from the inside of the portion 30 through the through-hole 34 with hydraulic pressure, and discharged from the discharge port 18. When the squeezing of the body part 40 is released, the discharge valve v1 is closed, and the inside of the body part 40 is negatively pressurized by the elastic restoring force of the container body part 40, whereby the intake valve v2 is opened, and the air passage p2 from the outside air introduction hole 17 is opened. The outside air that has passed through is introduced into the container body B.

  FIG. 5 shows a second embodiment of the discharge plug A, and the discharge plug A is fitted to a container body B similar to that of the first embodiment and is configured as an eye drop container as a whole. Although not shown, the same cap as that of the first embodiment of FIG. 1 is mounted. Further, the discharge plug A is composed of a nozzle base A1 and a valve member A2 as in the first embodiment.

  The nozzle base A1 is formed of a synthetic resin or the like, has a top-bottomed cylindrical shape with the top wall 11 extending from the top edge of the peripheral wall 10, and the outer peripheral lower portion of the peripheral wall 10 extends to the inner periphery of the mouth neck portion 41 of the container body B. It is fitted in an airtight / liquidtight manner. In the illustrated example, the flange 12 projecting at a predetermined position on the outer periphery of the peripheral wall 10 is brought into contact with and locked to the upper surface of the container body neck portion 41, and the lower peripheral wall 10 is fitted to the inner periphery of the container body neck portion 41. .

  A large-diameter portion 22 that is recessed in an annular shape is provided at the inner peripheral lower end portion of the peripheral wall 10, and an annular locking step portion that locks the flange-shaped locking plate portion 37 of the valve member A 2 at the upper end of the large-diameter portion 22. 23 is formed. Further, a discharge valve seat 13 in the form of an annular ridge is provided on the upper inner periphery of the peripheral wall 10, and a locking ridge 14 is provided on a predetermined position on the lower inner periphery of the discharge valve seat 13. doing. Further, a vertically long concave portion 15 that forms a ventilation path p <b> 2 having a lower end reaching the locking step portion 23 is formed in the inner peripheral lower portion of the peripheral wall 10 below the locking protrusion 14. In addition, an outside air introduction hole 17 is formed in the peripheral wall 10 at the position of the upper end portion in the recess 15. A discharge port 18 is opened in the top wall 11. The discharge port 18 is opened in a discharge cylinder 19 having an upper end opened at the central portion of the top wall 11, and the engagement means constituting the locking means via support ribs 20 protruding in the circumferential direction at the lower part of the discharge cylinder 19. The stop column 21 is supported.

  The valve member A2 is formed of a flexible and elastic material such as an elastomer, and includes a cylindrical portion 30 having a cylindrical shape with a lower end opening. An intake valve element 31 extending downward and outward in a trumpet shape is integrally projected, and a discharge valve element 32 extending in a trumpet shape and extending outward from the top surface of the cylinder portion 30 is integrally projected. . Further, a fixed partition wall 33 is provided so as to protrude from the upper outer periphery of the cylindrical portion 30 so that the outer peripheral edge is fitted and fixed to the inner periphery of the peripheral wall 10 of the nozzle base A1. A through hole 34 is formed in the cylindrical portion 30 between the fixed partition wall 33 and the discharge valve body 32 so that the inside of the cylindrical portion 30 communicates with the outside between the fixed partition wall 33 and the discharge valve body 32. ing. Further, a plurality of flange-like ribs 35 are provided at intervals from the outer periphery of the cylindrical portion 30 below the fixed partition wall 33.

  Further, a flange-like locking plate portion 37 constituting a locking means for fitting and locking the valve member A2 at a predetermined position in the nozzle base A1 is projected from the outer peripheral lower end portion of the cylindrical portion 30. The locking plate portion 37 is brought into contact with and locked to the lower surface of the locking step portion 23, and the valve member A2 is fitted and locked at a predetermined position in the nozzle base A1. Further, the locking plate portion 37 is provided with a vent hole 38 that constitutes the vent path p2. In this example, as shown in FIG. 6, a plurality of circumferentially cutout vents 38 are provided. In this example, two locking means, that is, an upper locking means constituted by the locking pillar 21 and a lower locking means constituted by the locking step portion 23 and the locking plate portion 37 are provided simultaneously. However, even if the locking means is only the upper locking means or only the lower locking means, the valve member A2 can be fitted and fixed at an appropriate position. By using the means together, it is possible to easily fit and fix the valve member A2 made of a flexible and elastic material at a more appropriate position.

  Then, the discharge member A is formed by inserting and fitting the valve member A2 from the lower end opening of the nozzle base A1. In the discharge plug A, the fixed partition wall 33 climbs over and engages with the upper surface of the locking protrusion 14 in a state where the upper surface of the valve member A2 is in contact with the lower surface of the locking column 21, and the peripheral edge of the discharge valve body 32 The lower surface of the part presses against the upper surface of the discharge valve seat 13 to constitute the discharge valve v1. In addition, the upper surface of the peripheral portion of the intake valve body 31 is in pressure contact with the intake valve seat 36 formed by the lower surface of the peripheral wall 10 of the nozzle base A1 to configure the intake valve v2. Further, the outer peripheral edge of each flange-like rib 35 is in pressure contact with the inner surface of the peripheral wall 10 of the nozzle base A1 to assist the stable fitting of the cylindrical portion 30. Further, the locking plate portion 37 is locked to the lower surface of the locking step portion 23. Further, a fluid passage p1 is formed from the lower end opening of the cylindrical portion 30 through the cylindrical portion 30 to the discharge port 18 through the through hole 34 at the upper end of the cylindrical portion 30 and the discharge valve v1. An intake passage p2 is defined from the introduction hole 17 through the recess 15 and through the ventilation hole 38 to the container body B via the intake valve v2.

  In the case of using the eye drop container configured as described above, for example, if the container body is tilted from the state of FIG. Then, the discharge valve v <b> 1 is pushed open with a hydraulic pressure and discharged from the discharge port 18. When the squeezing of the body part 40 is released, the discharge valve v1 is closed, and the inside of the body part 40 is negatively pressurized by the elastic restoring force of the container body part 40, whereby the intake valve v2 is opened, and the air passage p2 from the outside air introduction hole 17 is opened. The outside air that has passed through is introduced into the container body B.

  In each of the above examples, one recess 15 and one outside air introduction hole 17 are provided. However, a plurality of each may be provided, and an annular recess is formed in the inner periphery of the peripheral wall 10 as a form of the air passage p1. It may be a form in which a plurality of longitudinal ribs in the circumferential direction are provided.

A: Discharge tap A1: Nozzle base 10 ... peripheral wall, 11 ... top wall, 12 ... flange, 13 ... discharge valve seat, 14 ... locking protrusion,
15 ... Recess, 17 ... Outside air introduction hole, 18 ... Discharge port, 19 ... Discharge cylinder,
DESCRIPTION OF SYMBOLS 20 ... Support rib, 21 ... Locking pillar, 22 ... Large diameter part, 23 ... Locking step part A2: Valve member 30 ... Cylindrical part, 31 ... Intake valve body, 32 ... Discharge valve body, 33 ... Fixed partition wall, 34 ... through hole,
35 ... Flange-shaped rib, 36 ... Intake valve seat, 37 ... Locking plate part, 38 ... Vent hole B: Container body 40 ... Body part, 41 ... Mouth and neck part C: Cap 50 ... Perimeter wall, 50a ... Large diameter part, 50b ... flange, 50c ... small diameter part, 51 ... top wall,
52 ... Stick plug p1: Fluid passage p2: Ventilation passage v1: Discharge valve v2: Intake valve

Claims (5)

A container body (B) having a squeezable body part (B) is fitted with the outer periphery lower part fitted in a liquid-tight manner to the inner periphery of the mouth and neck part (41), and has a top cylindrical shape with an open lower end, The nozzle base (A1) having a discharge port (18) opened at the top, and a flexible and elastic material fitted and fixed in the nozzle base (A1). The discharge port (18 ) To the container body (B) from the outside air introduction hole (17) drilled in the peripheral wall (10) of the nozzle base (A1). A discharge valve (v1) unilaterally communicating from the inside of the container body (B) to the discharge port (18) in the middle of the liquid flow path (p1), and a vent path (p2). In each of the discharge plugs provided with intake valves (v2) unilaterally communicating from the outside into the container body (B) on the way ,
The valve member (A2) is formed by fitting and fixing the periphery of a fixed partition wall (33) projecting from a cylindrical portion (30) having a top-end cylindrical shape with a lower end opening on the inner periphery of the nozzle base (A1). The intake valve (v2) is fixed to the cylindrical portion (30) by the intake valve body (31) fixed to the lower end of the cylindrical portion (30) and the intake valve seat (36) on the lower surface of the nozzle base (A1). The discharge valve body (32) projecting from the upper end and the discharge valve seat (13) formed on the inner wall (10) inner surface of the nozzle base (A1) form a discharge valve (v1), respectively. (33) and the discharge valve body (32) communicate with the inside and outside of the cylinder part (30) through a through hole (34) constituting a fluid passage (p1) formed in the cylinder part (30). A discharge plug in which an outside air introduction hole (17) constituting an air passage (p2) is formed below the fixed partition wall (33). A flange-shaped rib (35) is provided on the outer periphery of the cylindrical portion (30) between the fixed partition wall (33) and the intake valve body (31) at an interval, and the outer peripheral edge of each flange-shaped rib (35). and fitted into the inner periphery of the peripheral wall (10) of the nozzle base body (A1), according to claim 1 which is recessed a recess (15) constituting the peripheral wall (10) ventilation path on the inner surface (p2) of the nozzle base body (A1) Discharge tap according to. Between the nozzle base body (A1) and the valve member (A2), claim provided a locking means for the valve member (A2) hermetically fitted engagement at a predetermined position in the nozzle base body (A1) 1 or claim 2 Discharge tap according to. 4. The discharge plug according to claim 3 , wherein the locking means is provided with a locking column (21) that abuts and locks the lower surface of the upper surface of the valve member (A2) on the lower surface of the top of the nozzle base (A1). The locking means forms the lower end portion of the inner periphery of the peripheral wall (10) of the nozzle base (A1) in the large diameter portion (22), so that the locking step portion (23) formed at the upper end of the nozzle base (A1) and the valve member ( A flange projecting at the lower outer periphery of the cylindrical portion (30) of A2), being in contact with and locked to the lower surface of the locking step portion (23), and having a ventilation hole (38) that constitutes the ventilation path (p2) The discharge stopper according to claim 3 or 4 , comprising a locking plate portion (37) having a shape.