JP6242682B2 - Syringe type ejection container - Google Patents

Description

  The present invention relates to a syringe-type ejection container that ejects content liquid by pressing a plunger.

  Conventionally, as a method for ejecting a liquid content such as a chemical solution, for example, as shown in Patent Document 1, an operation rod (plunger) is generally pushed into a syringe.

JP 7-213612 A

  By the way, depending on the content liquid, it may be desirable to divide a predetermined amount into smaller portions without ejecting all at once. However, in the syringe-type ejection container as described in Patent Document 1, it is necessary to eject a predetermined amount while looking at the scale shown on the syringe. It took time and effort.

  An object of the present invention is to solve such a conventional problem. The purpose of the present invention is to divide the content liquid into a predetermined amount and eject it in a predetermined amount. A new syringe-type spray container is proposed to be simplified.

The present invention includes a syringe that has a hollow shape and holds an ejection part filled with the content liquid on the distal end side, and a plunger that is inserted into the syringe and ejects the content liquid in the ejection part by pressing the operation part. A syringe-type ejection container,
The syringe includes a plunger guide grooves extending toward an end or et distal side after the syringe, the constriction grooves extending further toward the tip side of the syringe communicates with the said plunger guide grooves, A first pressing groove that communicates with the stenosis groove and extends from the stenosis groove toward the distal end side of the syringe, and is connected to the distal end portion of the first pressing groove and extends in a direction that goes around the axis of the syringe. A detour groove that extends and a second pressing groove that is connected to the detour groove and extends from the detour groove toward the distal end side of the syringe,
The plunger includes a protrusion that protrudes outward in the radial direction and is inserted into the groove.
The operation unit may have a recess to serve as takes a finger when rotating the plunger in the detour groove,
The narrowing groove is a syringe-type ejection container characterized in that a groove width is narrower than that of the plunger introduction groove and the first pressing groove .

  It is preferable to provide the recesses in a uniform arrangement in the circumferential direction with respect to the axis of the syringe.

  It is preferable that the second pressing groove has a rear end edge inclined toward the rear end side toward the first pressing groove.

  According to the present invention, by applying a pressing force to the operation portion of the plunger, the plunger can be moved to a position where the protrusion reaches the end point of the first pressing groove, and then the plunger is moved around the axis of the syringe. When the projection is moved to the second pressing groove by rotating the plunger, the plunger can be moved to a position where the projection reaches the end point of the second pressing groove. In other words, the content liquid can be ejected in at least two times as the projection moves in the first pressing groove and the movement in the second pressing groove. In addition, it is not necessary to use a scale or the like as a mark, and the concave portion provided in the operation portion functions as a finger hook when rotating the plunger, so that the operation when ejecting is simplified.

  In the case where the concave portion is provided in a uniform arrangement with respect to the axis of the syringe, a finger can be hung on any of the concave portions of the plunger, which improves usability.

  When a narrow groove with a narrower width than the first pressing groove is provided on the rear end side of the first pressing groove in the groove, even if force is applied in the direction of pulling out the plunger, the problem of the plunger falling out of the syringe is prevented. it can.

  When the second pressing groove is provided with a rear end edge that is inclined toward the rear end toward the first pressing groove, the plunger is smoothly pulled back when the plunger is returned to the ejection start position in replacing the new ejection portion. be able to.

It is the half cross section figure (a jet part is sectional drawing) in the front view which shows one Embodiment of the syringe-type jet container according to this invention, and the elements on larger scale of the jet part. 1A is a front view, a bottom view, and a cross-sectional view taken along A-A, and FIG. 1B is a side view of the syringe shown in FIG. It is the elements on larger scale of the groove part shown in FIG. It is a side view of the plunger shown in FIG.

  Hereinafter, an embodiment of the syringe-type ejection container of the present invention will be described with reference to the drawings. In addition, in this specification, a claim, an abstract, and drawing, a front-end | tip is a side in which an ejection part is located with respect to the syringe shown in FIG. 1, and a rear end is the opposite side.

  In FIG. 1, the code | symbol 10 shows one Embodiment of the syringe type ejection container of this invention. The syringe-type ejection container includes an ejection unit 20 filled with the content liquid F, a syringe 30 that holds the ejection unit 20, and a plunger 40 that is inserted into the syringe 30.

  The ejection part 20 includes a cylindrical pipe member 21. The pipe member 21 includes a small-diameter portion 21a provided on the distal end side and a large-diameter portion 21b connected to the small-diameter portion 21a. The pipe member 21 extends outward in the radial direction on the rear end side of the large-diameter portion 21b. An existing flange portion 21c is provided.

  A spin element 22 is provided in the small diameter portion 21a. The spin element 22 includes a cylindrical portion 22a that is fitted and held on the inner peripheral surface of the small diameter portion 21a. The cylindrical portion 22a has a notch 22b. Moreover, the top end side of the cylindrical part 22a is provided with a crested cylindrical enlarged diameter part 22c, and the connection part (step part) between the cylindrical part 22a and the enlarged diameter part 22c is the distal end of the small diameter part 21a. It is in contact with the edge. A plurality of openings 22d are formed in the peripheral wall of the enlarged diameter portion 22c so as to communicate with the inside of the cylindrical portion 22a and open toward the radially outer side. In addition, a groove portion that communicates the opening 22d with the ejection port 23c is provided on the outer peripheral surface on the distal end side of the enlarged diameter portion 22c, and a diameter is provided on the distal end surface of the enlarged diameter portion 22c with an interval in the circumferential direction. Concave ribs 22e (spin grooves) that extend in the direction and meet at the center are provided.

  On the outside of the spin element 22, a crested cylindrical nozzle 23 is provided. The nozzle 23 is fitted and held on the outer peripheral surface of the small-diameter portion 21a, and has a cylindrical peripheral wall portion 23a having a gap with the groove portion provided on the outer peripheral surface of the enlarged-diameter portion 22c, and the top of the enlarged-diameter portion 22c. A top wall portion 23b that comes into contact with the wall. Thereby, the inside of the pipe member 21 and the spout 23c are the inner passage T1 formed inside the cylindrical portion 22a, the branch passage T2 formed inside the opening 22d, and the outer peripheral surface of the enlarged diameter portion 22c. Formed between the groove T provided between the groove T and the inner peripheral surface of the peripheral wall 23a, and the concave rib 22e provided on the front end surface of the enlarged diameter portion 22c and the rear end surface of the top wall 23b. And a merging passage T4.

  On the outside of the nozzle 23, a cover 24 is provided that has a crested shape and is detachably held by the large diameter portion 21b. Thereby, the jet nozzle 23c can be covered until just before use.

  In addition, a piston 25 is provided inside the pipe member 21 so as to be slidable and liquid tight against the inner peripheral surface of the large diameter portion 21b. The content liquid F filled between the piston 25 and the spin element 22 can be ejected from the ejection port 23c by moving the piston 25 toward the distal end side.

  As shown in FIGS. 1 and 2, the syringe 30 includes a cylindrical body 31 having a hollow shape. On the distal end side of the trunk portion 31, a distal end cylindrical portion 32 having a smaller diameter than the trunk portion 31 and a mounting cylinder portion 33 surrounding the distal end cylindrical portion 32 are provided. A screw portion 33 a is provided on the inner peripheral surface of the mounting cylinder portion 33. As shown in FIG. 1, the front end cylinder part 32 is formed so as to be inserted into the pipe member 21 from the rear end side of the pipe member 21, and the mounting cylinder part 33 has the flange part 21c engaged with the screw part 33a. It is formed to do.

  A finger hook 34 for holding the syringe 30 when ejecting the contents is provided on the rear end side of the body portion 31. The finger hanging part 34 has a central part 34a having a diameter larger than that of the body part 31, a rear end side flange 34b extending from the central part 34a radially outward and curvedly extending from the outer edge toward the front end side, A front end side flange 34c is provided opposite to the rear end side flange 34b and extends radially outward from the central portion 34a.

  Further, the body portion 31 is provided with a groove portion 35 penetrating the body portion 31. As shown in FIG. 3, the groove portion 35 is provided in the center portion 34 a and extends from the rear end side of the syringe 30 toward the front end side (along the axis M of the syringe 30), A narrowing groove (first narrowing groove) 35b that is connected to the plunger introduction groove 35a and extends in the same direction as the plunger introduction groove 35a and is narrower than the plunger introduction groove 35a, and a first narrowing groove 35b An intermediate groove 35c that extends in the same direction as the first constriction groove 35b and has substantially the same groove width as the plunger introduction groove 35a, is connected to the intermediate groove 35c, and is inclined with respect to the axis M. An extending narrowing groove (second narrowing groove) 35d, a first pressing groove 35e connected to the second narrowing groove 35d, extending along the axis M and having substantially the same groove width as the plunger introduction groove 35a, First pressing groove 35 A detour groove 35g connected to the tip portion 35f and extending along the direction of circling the axis M, and connected to the detour groove 35g, extending along the axis M and substantially the same as the plunger introduction groove 35a. And a second pressing groove 35h having a groove width. Also, the rear ends of the first pressing groove 35e and the second pressing groove 35h are narrower than the first pressing groove 35e and the second pressing groove 35h (wider than the first narrowing groove 35b and the second narrowing groove 35d). ), A narrow portion 35i is provided. Moreover, the front-end | tip part 35f of the 1st press groove | channel 35e is provided with the folding | returning part 35j which protrudes toward a rear-end side from a front end side. The rear end edge 35k of the second pressing groove 35h is inclined toward the rear end side toward the first pressing groove 35e.

  As shown in FIGS. 1 and 4, the plunger 40 includes a cylindrical small-diameter shaft portion 41 provided on the distal end side, and a large-diameter shaft portion 42 connected to the small-diameter shaft portion 41, and the large-diameter shaft portion. On the rear end side of 42, a flat plate-like operation portion 43 is provided extending outward in the radial direction. The operation portion 43 is provided with a concave portion 43a that is concave toward the inside in the radial direction. Four recesses 43 a of the present embodiment are provided in an equal arrangement with respect to the axis M of the syringe 30. That is, the operation unit 43 has a substantially square shape in plan view. It is sufficient that at least one recess 43a is provided. When a plurality of recesses 43a are provided, a polygonal shape (preferably a regular polygonal shape) such as a substantially triangular shape or a substantially pentagonal shape in a plan view, etc. can do.

  The large-diameter shaft portion 42 is provided with a columnar protrusion 44 that protrudes outward in the radial direction. The outer diameter of the protrusion 44 is smaller than the groove width of the plunger introduction groove 35a shown in FIG. 3 (the groove width of the first pressing groove 35e and the second pressing groove 35h), but slightly smaller than the groove width of the narrow portion 35i. Is getting bigger. The protrusion 44 is provided with a flange portion 45 that is rectangular when viewed from the front. In this embodiment, the protrusion 44 and the large-diameter shaft portion 42 are integrally molded. However, a pin member is prepared by integrally connecting the protrusion 44 and the flange portion 45, and the large-diameter shaft portion 42 is provided with the pin member. On the other hand, a hole directed radially inward may be provided, and the projection 44 of the pin member may be fitted into this hole.

  In ejecting the content liquid F from the syringe-type ejection container configured as described above, the plunger 40 is inserted from the rear end side of the syringe 30 while the projection 44 is aligned with the plunger introduction groove 35a. 3, the plunger 40 is moved until the projection 44 enters the first pressing groove 35e (ejection start position). Note that, at this position, the small-diameter shaft portion 41 of the plunger 40 is formed such that its tip protrudes from the tip tube portion 32 of the syringe 30 as shown in FIG.

  Next, the pipe member 21 is rotated while being inserted into the distal end cylindrical portion 32, and the flange portion 21 c is engaged with the threaded portion 33 a of the mounting cylindrical portion 33, thereby holding the ejection portion 20 on the distal end side of the syringe 30. In this state, the piston 25 is in a state where its rear end is slightly spaced from the tip of the small diameter shaft portion 41 or is pushed by the small diameter shaft portion 41.

  Thereafter, the cover 24 is removed, and for example, the index finger and the middle finger are hung on the finger hooking portion 34 of the syringe 30 and the thumb is applied to the operation portion 43 of the plunger 40 to press the plunger 40 toward the distal end side. Here, as shown in FIG. 3, since the narrow portion 35i is provided on the rear end side of the first pressing groove 35e, the plunger 40 is slowly moved when the projection 44 moves through the narrow portion 35i. Although it moves, if the protrusion 44 passes this narrow part 35i, since the plunger 40 will move rapidly, the content liquid F can be ejected vigorously from the jet nozzle 23c. Further, since the protrusion 44 comes into contact with the distal end portion 35f of the first pressing groove 35e and the movement of the pushed plunger 40 is stopped, the content liquid F corresponding to the length of the first pressing groove 35e is stopped. Can be ejected in an accurate amount.

  Next, the plunger 40 is rotated around the axis M, and the protrusion 44 located at the tip portion 35f is moved to the second pressing groove 35h along the bypass groove 35g. As shown in FIG. 4, since the operation portion 43 is provided with a recess 43a, the plunger 40 can be rotated by using this recess 43a (a projection between adjacent recesses 43a) as a finger. Further, in the present embodiment, as shown in FIG. 3, since the folded portion 35j is provided at the distal end portion 35f and a resistance force can be applied when the plunger 40 is rotated, the plunger 40 is rotated carelessly. It won't let you.

  Then, the plunger 40 is pushed in by pressing the operation part 43 again (the projection 44 moves along the second pressing groove 35h), and the content liquid F corresponding to the length of the second pressing groove 35h is discharged. Can be ejected. Since the narrow portion 35i is also provided on the rear end side of the second pressing groove 35h, the content liquid F can be ejected vigorously from the ejection port 23c as in the first ejection. When the plunger 40 is pushed down to the end, even if the piston 25 comes into contact with the cylindrical portion 22a of the spin element 22 as shown in FIG. 1, the cylindrical portion 22a is provided with a notch 22b. Therefore, the internal passage T1 is never closed.

  Since the second constriction groove 35d is provided on the rear end side of the first pressing groove 35e, even if a force is applied in the direction of pulling out the plunger 40 before the first ejection, the projection 44 is The plunger 40 is clamped by the second constriction groove 35d and moves with a relatively strong resistance. Thereby, the malfunction that the plunger 40 falls out of the syringe 30 can be prevented. In particular, in this embodiment, since the extending direction of the second constricting groove 35d is inclined with respect to the axis M, the plunger 40 is rotated when the plunger 40 moves toward the rear end side. Since necessity also arises, the fall-off prevention of the plunger 40 becomes more reliable. Furthermore, since the intermediate groove 35c and the first narrowed groove 35b exist behind the second narrowed groove 35d, the plunger 40 is more reliably prevented from falling off. The intermediate groove 35c and the first narrowing groove 35b may not be provided.

  The ejection part 20 of this embodiment is detachably attached to the syringe 30, and after ejecting the content liquid F, the ejection part 20 is replaced with a new ejection part 20, whereby the syringe 30 and the plunger 40 are replaced. It can be reused (the ejection part 20 is used as a cartridge). In order to attach the new ejection part 20 to the syringe 30, it is necessary to pull out the plunger 40 to the rear end side and move the projection 44 from the second pressing groove 35h to the first pressing groove 35e. As shown, the rear end edge 35k of the second pressing groove 35h is inclined toward the rear end side toward the first pressing groove 35e, so that the projection 44 is not caught in the middle. For this reason, the plunger 40 can be pulled back smoothly.

  The syringe-type ejection container according to the present invention is not limited to this embodiment, and various modifications can be made within the scope according to the claims. For example, the ejection portion 20 is held by the screw portion 33a of the syringe 30, but an undercut may be provided instead of the screw portion 33a and engaged with the undercut. Further, by providing a mesh instead of the spin element 22 of the ejection part 20, the content liquid can be ejected in the form of foam. Further, in this embodiment, the content liquid is divided into two portions and ejected. However, by increasing the number of the first pressing grooves 35e and the bypass grooves 35g, the content liquid F is further subdivided and ejected. It is also possible to make it. Further, the narrow portion 35i and the folded portion 35j may not be provided.

  According to the present invention, it is possible to provide a novel syringe-type ejection container that can divide the content liquid into a predetermined amount and eject it in a predetermined amount and that can be ejected by a simple operation.

DESCRIPTION OF SYMBOLS 10 Syringe-type ejection container 20 Ejection part 21 Pipe member 21a Small diameter part 21b Large diameter part 21c Flange part 22 Spin element 22a Cylindrical part 22b Notch part 22c Large diameter part 22d Opening 22e Concave rib (spin groove)
23 nozzle 23a peripheral wall part 23b top wall part 23c jet outlet 24 cover 25 piston 30 syringe 31 body part 32 front end cylinder part 33 mounting cylinder part 33a screw part 34 finger hook part 34a center part 34b rear end side flange 34c front end side flange 35 groove part 35a Plunger introduction groove 35b Narrowing groove (first narrowing groove)
35c Intermediate groove 35d Narrowed groove (second narrowed groove)
35e First pressing groove 35f Tip portion 35g Detour groove 35h Second pressing groove 35i Narrow portion 35j Folding portion 35k Rear end edge of second pressing groove 40 Plunger 41 Small diameter shaft portion 42 Large diameter shaft portion 43 Operation portion 43a Concavity 44 Projection 45 Flange F Content liquid M Syringe axis T1 Internal passage T2 Branch passage T3 passage T4 Merge passage

Claims (3)

A syringe-type ejection container comprising a syringe that has a hollow shape and holds the ejection portion filled with the content liquid on the distal end side, and a plunger that is inserted into the syringe and ejects the content liquid in the ejection portion by pressing the operation portion Because
The syringe includes a plunger guide grooves extending toward an end or et distal side after the syringe, the constriction grooves extending further toward the tip side of the syringe communicates with the said plunger guide grooves, A first pressing groove that communicates with the stenosis groove and extends from the stenosis groove toward the distal end side of the syringe, and is connected to the distal end portion of the first pressing groove and extends in a direction that goes around the axis of the syringe. A detour groove that extends and a second pressing groove that is connected to the detour groove and extends from the detour groove toward the distal end side of the syringe,
The plunger includes a protrusion that protrudes outward in the radial direction and is inserted into the groove.
The operation unit may have a recess to serve as takes a finger when rotating the plunger in the detour groove,
The narrowed groove is formed with a narrower groove width than the plunger introduction groove and the first pressing groove .   The syringe-type ejection container according to claim 1, wherein the concave portions are provided in a circumferential arrangement with respect to the axis of the syringe. The syringe-type ejection container according to claim 1 or 2 , wherein the second pressing groove has a rear end edge inclined toward the rear end side toward the first pressing groove.

Images