JP7431151B2 - Syringe type squirt container - Google Patents

Description

The present invention relates to a syringe-type ejection container.

The syringe-type ejection container includes a syringe member with a spout at the tip and a plunger member arranged so as to be pushed inside the syringe member.By pushing the plunger member toward the inside of the syringe member, the syringe member The structure is such that the contents filled inside can be spouted out.

Conventionally, such a syringe-type ejection container is provided with a stopper member such as a stick-shaped projection rotatably connected to a plunger member by a hinge, and the stopper surface of the stopper member is brought into contact with the rear end of the syringe member. In this way, the pushing operation of the plunger member is restricted, and the pushing operation of the plunger member is made possible by pushing the stopper member radially inward to release the engagement of the stopper surface with the rear end of the syringe member. A device configured as follows is known (for example, see Patent Document 1).

In addition, in such a syringe-type ejection container, by providing a plurality of stopper members arranged in the axial direction on the plunger member, it is possible to push the plunger member in stages, and the inside of the syringe member is filled. There is also known a device in which the contents can be spouted in small portions in predetermined amounts from the spout in multiple doses (see, for example, Patent Document 2).

Patent No. 3558723 Patent No. 3519166

However, in the above conventional syringe-type ejection container, when ejecting the contents, the stopper member is pushed radially inward to make it possible to enter the inside of the syringe member, and then this state is maintained. There is a problem in that it is necessary to push the plunger member into the syringe member while pushing the stopper member radially inward, which makes the operation complicated.

The present invention aims to solve these problems, and its purpose is to provide a syringe-type ejection container that allows the contents to be easily ejected.

The syringe-type ejection container of the present invention includes a syringe member having a spout at its tip, an operating rod, and a piston provided at the tip of the operating rod and disposed inside the syringe member. a plunger member, and a stopper surface facing the piston side, which is connected to the operating rod by a hinge, and is connected to the inside of the syringe member from an outer position where the stopper surface can abut against the rear end of the syringe member. a stopper member that is rotatable to an inner position that allows entry into the operating rod; and a stopper member that is provided on the operating rod and that engages with a locking portion provided on the stopper member when the stopper member is in the inner position. and a holding portion that holds the stopper member at the inner position.

In the syringe-type ejection container of the present invention, in the above configuration, it is preferable that the pair of stopper members are provided on the operating rod in point symmetry with respect to the axis of the operating rod.

In the syringe-type ejection container of the present invention, in the above configuration, it is preferable that the plurality of stopper members are arranged on the operating rod in an axial direction of the operating rod.

In the syringe-type ejection container of the present invention, in the above configuration, it is preferable that the hinge supports the stopper member rotatably about an axis parallel to the axial direction of the operating rod.

In the syringe-type ejection container of the present invention, in the above configuration, the holding portion has a convex shape protruding radially outward from the outer circumferential surface of the operating rod, and the stopper member has a concave shape and the locking portion has a concave shape. It is preferable that the outer peripheral surface is a curved surface having an arcuate cross-section and a smaller diameter than the inner peripheral surface of the syringe member.

According to the present invention, it is possible to provide a syringe-type ejection container that allows the contents to be easily ejected.

FIG. 2 is a side view, partially in cross section, showing a state before the plunger member of the syringe-type ejection container according to an embodiment of the present invention is pushed. 2 is a sectional view taken along line AA in FIG. 1. FIG. FIG. 2 is a side view, partially in section, showing a state in which the lower stopper members of the pair of syringe-type ejection containers shown in FIG. 1 are in inner positions. 4 is a sectional view taken along line BB in FIG. 3. FIG. FIG. 2 is a side view, partially in section, showing a state in which the plunger member of the syringe-type ejection container shown in FIG. 1 is pushed in;

EMBODIMENT OF THE INVENTION Hereinafter, the syringe type ejection container of the present invention will be illustrated in detail using embodiments with reference to the drawings.

A syringe-type ejection container 1 according to an embodiment of the present invention can be used, for example, for the purpose of spraying pharmaceuticals such as nasal drops.

As shown in FIG. 1, the syringe-type ejection container 1 includes a syringe member 10. As shown in FIG. The syringe member 10 can be filled with the content 2 inside, and is provided with a spout 11 at one end along the axis O (lower end in FIG. 1) for ejecting the content 2 to the outside. ing.

In this embodiment, the syringe member 10 is made of synthetic resin, and includes a cylindrical body 12, a distal end 13 integrally provided at the distal end of the body 12, and a distal end 13 integrally provided at the rear end of the body 12. A finger rest part 14 is provided. The tip portion 13 has a cylindrical shape with a smaller diameter than the body portion 12, and the spout 11 is opened at the tip. The finger hook part 14 has a flange shape that spreads outward in the radial direction from the rear end of the body part 12 around the axis O, and the surface facing the opposite side from the tip part 13 is connected to the body part 12. The rear end portion 15 of the syringe member 10 is integrally connected to the rear end and is perpendicular to the axis O.

Note that the syringe member 10 is not limited to being made of synthetic resin, and may be made of glass, for example. Further, the finger hook 14 may be formed separately from the body 12 and attached to the body 12.

Further, the syringe member 10 may have a configuration in which a cap 16 that closes the spout 11 is detachably attached to the distal end portion 13. The cap 16 is fitted onto the outer circumferential surface of the tip portion 13, and is removed by being pulled out from the spout 11 before spouting the contents 2.

The syringe-type ejection container 1 includes a plunger member 20. The plunger member 20 includes an operating rod 21 and a piston 22 provided at the tip of the operating rod 21 and disposed inside the syringe member 10, and can be pushed into the syringe member 10. .

In this embodiment, the operating rod 21 is formed of a synthetic resin material into a rod shape whose cross section perpendicular to the axis O has a substantially cross shape. The operating rod 21 is thinner than the inner diameter of the body 12 of the syringe member 10 and can enter inside the body 12 . The length of the operating rod 21 is such that even if the piston 22 reaches the tip of the body 12 of the syringe member 10 and moves to the stroke end position where it abuts the rear end of the tip 13, the rear end 15 of the syringe member 10 The length is set to such an extent that it protrudes from the outside.

The piston 22 is formed into a cylindrical shape with a triangular pyramid-shaped tip made of an elastic material such as synthetic rubber, and is slidable on the inner circumferential surface of the body 12 of the syringe member 10. The piston 22 is fixed to the operating rod 21 by being screwed to a threaded portion 21a provided at the tip of the operating rod 21.

The piston 22 forms a filling space inside the syringe member 10 in which the content 2 is filled. When the piston 22 is pushed into the syringe member 10 together with the operating rod 21, the contents 2 are ejected to the outside from the ejection port 11 provided at the distal end portion 13.

The plunger member 20 may also have a configuration in which a plate-shaped pressing portion 23 is integrally provided at the rear end of the operating rod 21. By providing the pressing portion 23, the plunger member 20 can be pushed in by placing the index finger and middle finger on the finger hook 14 and pressing the pressing portion 23 with the thumb, thereby allowing the pushing operation of the operating rod 21. can be easily performed.

A stopper member 30 is provided on the operating rod 21 of the plunger member 20 . The number of stopper members 30 is not limited to one, and a plurality of stopper members 30 can be provided.

In this embodiment, the operating rod 21 is provided with a pair of lower stopper members 30 symmetrically about the axis O of the operating rod 21. A pair of upper stopper members 30 that are different from the pair of upper stopper members 30 are spaced apart from each other in the axial direction (direction of the axis O) with respect to the pair of lower stopper members 30, and are aligned with each other at the axis of the operating rod 21. They are provided point-symmetrically with O as the center.

Each stopper member 30 includes a stopper surface 30a facing toward the piston 22, and is integrally connected to the operating rod 21 by a hinge 32. The hinge 32 is formed between the operating rod 21 and the stopper member 30 as a thin-walled portion extending parallel to the axis O. The structure is such that it is rotatably supported around an axis parallel to the direction. As a result, the pair of lower stopper members 30 are moved from the outer position where they can abut against the rear end portion 15 of the syringe member 10 on the stopper surface 30a, as shown in FIGS. 1 and 2, to the position shown in FIGS. As shown, it is rotatable to an inner position where it can enter the inside of the syringe member 10. The pair of upper stopper members 30 also have a similar configuration, and as shown in FIG. As shown, it is rotatable to an inner position where it can enter the inside of the syringe member 10.

As shown in FIGS. 2 and 4, when the stopper member 30 is in the inner position, the operating rod 21 engages with a locking portion 31 provided on the stopper member 30 to move the stopper member 30 inward. A holding part 24 is provided to hold it in position. Therefore, when the stopper member 30 rotates from the outer position to the inner position, it is held at the inner position and is prevented from returning toward the outer position.

In this embodiment, the holding portion 24 has a convex shape that projects radially outward from the outer peripheral surface of the operating rod 21. On the other hand, the stopper member 30 has a concave shape in which the locking part 31 can be engaged with the convex holding part 24, and the outer peripheral surface has an arcuate cross-section with a smaller diameter than the inner peripheral surface of the body part 12 of the syringe member 10. It has a curved surface 33. That is, the stopper member 30 has a substantially C-shaped cross section perpendicular to the axis O, and a uniform cross-sectional shape along the axis O. The edge portion of the concave locking portion 31 has a protrusion shape, and this protrusion portion engages with the convex holding portion 24 in an undercut inside the concave shape, so that the stopper is in the inner position. The member 30 is held by the operating rod 21.

Next, a method of using the syringe-type ejection container 1 of this embodiment having the above configuration will be explained.

In the syringe-type ejection container 1 filled with the contents 2 before use, the pair of lower stopper members 30 and the pair of upper stopper members 30 are respectively located at outer positions, and the pair of lower stopper members 30 is The stopper surfaces 30a are in contact with the rear end portion 15 of the syringe member 10, respectively.

First, the user removes the cap 16 from the syringe member 10 from the state shown in FIG. Hold. At this time, since the stopper surfaces 30a of the pair of lower stopper members 30 are in contact with the rear end portion 15 of the syringe member 10, the plunger member 20 cannot be pushed into the inside of the syringe member 10, The contents 2 are prevented from being spouted out unexpectedly.

Next, as shown in FIGS. 3 and 4, the user rotates the pair of lower stopper members 30 from the outer position to the inner position, and locks the locking portions 31 of these stopper members 30 onto the operating rod. 21 to hold the pair of lower stopper members 30 at the inner position. At this time, the pair of upper stopper members 30 remain in the outer position.

When the pair of lower stopper members 30 are placed in the inner position, each stopper surface 30a is shifted radially inward than the rear end 15 of the syringe member 10, and the engagement with the rear end 15 is released. The pair of lower stopper members 30 can enter the inside of the syringe member 10. Therefore, as shown in FIG. 5, the user points the tip 13 of the syringe-type ejection container 1 toward the target location, presses the pressing part 23, and pushes the plunger member 20 toward the inside of the syringe member 10. The contents 2 can be pressurized by the piston 22 inside the syringe member 10, and the contents 2 can be ejected from the spout 11 toward a target location.

Here, in the syringe-type ejection container 1 of the present embodiment, when the pair of lower stopper members 30 is rotated from the outer position to the inner position, the locking part 31 is attached to the holding part provided on the operating rod 21. 24 and held in the inner position, the user can insert the plunger member 20 into the syringe without holding the pair of lower stopper members 30 with their hands or the like to hold the plunger member 20 in the inner position. By pushing the member 10 toward the inside, the contents 2 can be squirted out.

As shown in FIG. 5, when the plunger member 20 is pushed into the syringe member 10 by a predetermined stroke, the stopper surface 30a of the pair of upper stopper members 30 comes into contact with the rear end 15 of the syringe member 10. , further pushing of the plunger member 20 is restricted. This completes the first pushing operation of the plunger member 20. Therefore, by setting the interval in the direction along the axis O between the stopper surface 30a of the pair of lower stopper members 30 and the stopper surface 30a of the pair of upper stopper members 30 to a desired interval, the plunger member By the first pushing operation 20, a predetermined amount of the contents 2 can be accurately ejected from the ejection port 11.

Next, from the state shown in FIG. 5, the pair of upper stopper members 30 are rotated from the outer position to the inner position, and the locking parts 31 of these stopper members 30 are attached to the holding part 24 provided on the operating rod 21. is engaged to hold the pair of upper stopper members 30 in the inner position.

When the pair of upper stopper members 30 are in the inner position, each stopper surface 30a shifts radially inward than the rear end 15 of the syringe member 10, and the engagement with the rear end 15 is released, and the pair The upper stopper member 30 can enter the inside of the syringe member 10. Therefore, the user points the tip 13 of the syringe-type ejection container 1 toward the target location again, presses the pressing part 23 to push the plunger member 20 toward the inside of the syringe member 10 , and the inside of the syringe member 10 is removed. By pressurizing the contents 2 with the piston 22, the contents 2 can be ejected from the spout 11 toward the target location.

When the plunger member 20 is pushed into the syringe member 10 by a predetermined stroke by the second pushing operation, the piston 22 comes into contact with the inner surface of the distal end portion 13 and reaches the stroke end, and the plunger member 20 is not pushed further. Regulated. This completes the second pushing operation of the plunger member 20. Therefore, the pair of upper stopper members 30 are arranged so that the remaining stroke amount of the piston 22 when the stopper surface 30a of the pair of upper stopper members 30 is in contact with the rear end portion 15 of the syringe member 10 becomes a desired stroke amount. By setting the position of the stopper surface 30a of the member 30, a predetermined amount of the contents 2 can be accurately ejected from the ejection port 11 by the second pushing operation of the plunger member 20.

In this embodiment, the amount of contents 2 spouted from the spout 11 by the first pushing operation of the plunger member 20 and the amount of contents 2 spouted from the spout 11 by the second pushing operation of the plunger member 20 are explained. The setting is such that the amount of With such settings, the syringe-type ejection container 1 of the present embodiment can accurately eject the same amount of content 2 into two doses.

As described above, according to the syringe-type ejection container 1 of the present embodiment, when ejecting the contents 2, the plunger member 20 can be moved into the syringe member without holding the stopper member 30 by hand or the like to hold it in the inner position. 10, the contents 2 can be easily ejected even if the stopper member 30 is provided.

Further, according to the syringe-type ejection container 1 of the present embodiment, since the pair of stopper members 30 are provided on the operating rod 21 point-symmetrically about the axis O of the operating rod 21, the pair of stopper members 30 The pair of stopper members 30 reliably stops the plunger member 20 at a prescribed position so that the stopper surface 30a of the stopper member 30 contacts the rear end portion 15 of the syringe member 10 on both sides of the axis O. be able to.

Furthermore, according to the syringe-type ejection container 1 of the present embodiment, the plurality of stopper members 30 are arranged on the operating rod 21 in the axial direction of the operating rod 21. The filled contents 2 can be ejected accurately in predetermined amounts in multiple batches.

Furthermore, according to the syringe-type ejection container 1 of the present embodiment, the hinge 32 is configured to support the stopper member 30 rotatably about an axis parallel to the axial direction of the operating rod 21, so that the plunger The stopper member 30 is prevented from rotating due to the pushing force applied to the member 20, and the pair of stopper members 30 can reliably stop the plunger member 20 at a prescribed position.

Furthermore, according to the syringe-type ejection container 1 of the present embodiment, the holding portion 24 has a convex shape that protrudes radially outward from the outer peripheral surface of the operating rod 21, and the stopper member 30 has a concave shape. Since the stopper member 31 is provided and the outer circumferential surface is a curved surface 33 having an arcuate cross section with a smaller diameter than the inner circumferential surface of the syringe member 10, the stopper member 30 can be made more compact and highly operable.

It goes without saying that the present invention is not limited to the embodiments described above, and can be modified in various ways without departing from the spirit thereof.

For example, in the embodiment described above, the initial state is a state in which the stopper surfaces 30a of the pair of lower stopper members 30 are in contact with the rear end portion 15 of the syringe member 10, as shown in FIG. The initial state may be such that the stopper surface 30a of the lower stopper member 30 is separated from the rear end portion 15 of the syringe member 10 by a predetermined distance in the direction of the axis O. Thereby, the syringe-type ejection container 1 can be configured to be able to eject the contents 2 in three parts. In this case, by setting the predetermined distance to a desired distance, a desired amount of the contents 2 can be ejected by the first pushing operation of the plunger member 20.

Further, in the embodiment described above, the stopper members 30 are arranged in two stages on the operating rod 21 in the axial direction of the operating rod 21, but the stopper members 30 are operated in three or more stages. You may make it arrange in the axial direction of the rod 21 and provide it.

Furthermore, in the embodiment described above, a plurality of stopper members 30 are arranged on the operating rod 21 in the axial direction of the operating rod 21, but it is also possible to have a configuration in which only one stopper member 30 is provided. . In this case, the initial state is such that the stopper surface 30a of the stopper member 30 is separated by a predetermined distance from the rear end portion 15 of the syringe member 10 in the direction of the axis O, so that the contents 2 can be accurately delivered in a predetermined amount. It can be ejected in two parts. It should be noted that the stopper member 30 may be used in such a manner that the contents 2 are ejected only once, with the stopper surface 30a of the stopper member 30 in contact with the rear end portion 15 of the syringe member 10 as an initial state.

Furthermore, in the embodiment described above, in the second pushing operation of the plunger member 20, the piston 22 comes into contact with the inner surface of the tip portion 13, thereby restricting further pushing of the plunger member 20. It may be configured such that further pushing of the plunger member 20 is restricted by the portion 23 coming into contact with the rear end portion 15 of the syringe member 10.

1 Syringe-type ejection container 2 Contents 10 Syringe member 11 Spout 12 Body 13 Tip portion 14 Finger hook 15 Rear end 16 Cap 20 Plunger member 21 Operating rod 21a Threaded portion 22 Piston 23 Pressing portion 24 Holding portion 30 Stopper Member 30a Stopper surface 31 Locking portion 32 Hinge 33 Curved surface O Axial center

Claims (5)

a syringe member with a spout at the tip;
a plunger member comprising an operating rod and a piston provided at the tip of the operating rod and disposed inside the syringe member;
It has a stopper surface facing the piston side, is connected to the operating rod by a hinge, and is capable of entering the inside of the syringe member from an outer position where it can come into contact with the rear end of the syringe member on the stopper surface. a stopper member rotatable to an inner position;
a holding part provided on the operating rod and engaging with a locking part provided on the stopper member to hold the stopper member in the inner position when the stopper member is in the inner position; A syringe-type ejection container characterized by having. The syringe-type ejection container according to claim 1, wherein the pair of stopper members are provided on the operating rod in point symmetry with respect to the axis of the operating rod. The syringe-type ejection container according to claim 1 or 2, wherein the plurality of stopper members are arranged on the operating rod in an axial direction of the operating rod. The syringe-type ejection container according to any one of claims 1 to 3, wherein the hinge supports the stopper member rotatably about an axis parallel to the axial direction of the operating rod. The holding portion has a convex shape that projects radially outward from the outer peripheral surface of the operating rod,
The stopper member includes the locking portion having a concave shape and has an outer circumferential surface that is a curved surface having an arcuate cross-section and a smaller diameter than the inner circumferential surface of the syringe member. syringe type squirt container.

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