JP5944310B2 - Syringe type ejection container - Google Patents

Description

  The present invention relates to a syringe-type ejection container capable of ejecting a content liquid in which a piston is pushed into a syringe and mixed with air to the outside.

  As a conventional syringe-type ejection container, there is known one that can spray a content liquid by attaching a spray nozzle with a built-in valve to a syringe (barrel) filled with the content liquid and pushing out the content liquid with a piston ( For example, see Patent Document 1).

JP 2001-137344 A

  However, since the conventional syringe-type ejection container is obtained by filling the operation liquid operated by the user with the content liquid, if the syringe is downsized for the purpose of spraying a small amount, the usability is deteriorated. For this reason, the conventional syringe-type ejection container is unsuitable for spraying a small amount of content liquid. In addition, the conventional syringe-type ejection container merely pressurizes the inner solution and ejects it, and does not mix the content liquid with air.

  An object of the present invention is to provide a novel syringe-type ejection container that can spray even a small amount of content liquid in a mixed state of air.

The syringe-type ejection container of the present invention includes an operation unit operated by a user, and an ejection unit from which a mixed liquid of air and content liquid is ejected,
The operation portion forms an annular gap between the syringe having the tip tube portion, the piston for pushing the air in the syringe to the tip tube portion, and the tip tube portion, and from the tip tube portion by the pressing force received from the piston. A protruding rod,
The ejection part includes an outer cylinder that has an ejection port and is attached to the distal end cylinder part, an inner cylinder that is disposed inside the outer cylinder, a plunger that pushes out the content liquid filled inside the inner cylinder, and a distal end pin In addition, a plurality of through holes are provided around the tip pin at intervals to be fixed to the tip of the inner cylinder, and there is an opening through which the tip pin passes, and the inner edge of the opening is connected to the tip pin. Equipped with an elastic cover that seals between
Between the inner cylinder and the outer cylinder, to which the elastic cover is fixed together with the stopper, there is a liquid passage through which the content liquid pushed out from the opening circulates to the jet outlet, and air through which the air pushed out from the annular gap flows. A merging portion for joining the passage, the air passage, and the liquid passage is formed.

  In this invention, at least 1 mesh can be arrange | positioned between the confluence | merging part of a liquid path and an air path, and a jet nozzle. The ejection part can be detachably attached to the operation part.

  In the syringe-type ejection container of the present invention, the rod that receives the pressing force from the piston protrudes from the distal end cylindrical portion of the syringe by pushing the piston of the operation portion. Next, the rod protruding from the distal end cylindrical part pushes the content liquid toward the elastic cover together with the plunger built in the inner cylinder of the ejection part. At this time, the inner edge of the opening of the elastic cover is not hermetically sealed with the tip pin of the plug until the liquid content reaches a certain pressure. For this reason, the content liquid is compressed between the elastic cover and the plunger until the space between the opening inner edge of the elastic cover and the tip pin is opened. In other words, the elastic cover seals between the tip pin by its own elastic force against the pressure of the content liquid, while if the pressure of the content liquid exceeds the elastic force, the elastic cover resists the elastic force. Open. When the space between the inner edge of the elastic cover and the distal end pin of the plug is opened by the pressure of the content liquid, the content liquid is pushed out to the liquid path formed between the elastic cover and the outer cylinder at once.

  On the other hand, by pushing in the piston of the operation part, the air in the syringe is pushed out to the ejection part through a gap formed between the tip cylinder part and the rod. The air pushed out to the ejection part joins the liquid passage through an air passage formed between the inner cylinder and the outer cylinder to which the elastic cover is fixed together with the stopper.

  As described above, in the present invention, by using the elastic cover, the content liquid filled in the ejection portion is compressed to a certain pressure, and then released at a stretch, so that the content liquid containing air is kept in a certain state. It can be ejected in the form of a mist while keeping.

  Moreover, in this invention, the operation part for ejecting the content liquid containing air can be made into another structure by filling a content liquid in an ejection part. For this reason, it is possible to reduce the size of only the ejection portion filled with the content liquid without reducing the size of the operation portion. Therefore, the present invention is effective when it is desired to spray only a small amount of the mixed liquid containing air without impairing operability.

It is principal part sectional drawing which shows the syringe type ejection container which is one Embodiment of this invention. (A) is an expanded sectional view which shows the same syringe type ejection container, (b) is an enlarged view of (a). It is an expanded sectional view which shows the state which sprayed the content liquid containing air from the syringe type ejection container.

  Hereinafter, an embodiment of a syringe-type ejection container according to the present invention will be described in detail with reference to the drawings.

  In FIG. 1, reference numeral 1 denotes a syringe-type ejection container (hereinafter referred to as “ejection container”), which is the first embodiment of the present invention. The ejection container 1 includes an operation unit 50 that is operated by a user and a ejection unit 10.

  The operation unit 50 includes a syringe 51 that is filled with air. The syringe 51 has an annular shoulder 51b formed at one end of a hollow body 51a. The syringe 51 is integrally provided with a distal end tube portion 51c having a smaller diameter than the body portion 51a via a shoulder portion 51b. An internal passage leading to a space formed inside the trunk portion 51a is formed inside the distal end cylinder portion 51c. Further, the syringe 51 is provided with a mounting cylinder part 51d surrounding the tip cylinder part 51c. Furthermore, the syringe 51 is provided with a finger hook syringe 51e.

The operation unit 50 has a piston 52. The piston 52 forms an air filling space S ₁ with the syringe 51. The piston 52 is slidably held inside the body portion 51a. Reference numeral 53 denotes an operation shaft to which the piston 52 is fixed. The operation shaft 53 includes a main body 53a to which the piston 52 is fixed and a pressing portion 53b that receives a pressing force from a user. Thus, the user is pushing the operating shaft 53 over a finger on the finger hook portion 51e of the syringe 51, can be pushed out the air in the filling space S ₁ to the distal tube portion 51c.

Further, a rod member 54 is disposed inside the syringe 51. The rod member 54 has a plunger rod 54a that is disposed inside the distal end cylinder portion 51c. Plunger rod 54a is provided between the distal cylindrical portion 51c, to form the first air path r _1. The plunger rod 54a is integrally provided with a plate 54b that receives the piston 52. Thereby, the plunger rod 54a can be protruded from the front end cylinder portion 51c by the pressing force received from the piston 52. The plate 54b is a plate-like member such as a disk. Furthermore, a plurality of notches 54c are formed on the outer edge of the plate 54b at intervals in the circumferential direction (around the axis O). As a result, the rod member 54 can be easily pushed out toward the distal end cylinder part 51c, and the air between the piston 52 and the plate 54b can also be pushed out to the distal end cylinder part 51c. However, according to the present invention, the notch 54c can be omitted. Alternatively, the piston 52 and the plunger rod 54a can be provided integrally.

  The operation unit 50 is configured as an operation instrument as described above, while the ejection unit 10 functions as an ejection nozzle.

  The ejection part 10 has the outer cylinder 11 with which the front-end | tip cylinder part 51c is mounted | worn. The outer cylinder 11 has a spout 1a at the tip. The rear end portion 11 e of the outer cylinder 11 is attached to the syringe 51. The rear end portion 11e of the outer cylinder 11 forms a flange portion. The rear end portion 11e of the outer cylinder 11 functions as a screw portion, and is detachably screwed into a screw portion 51s formed inside the mounting cylinder portion 51d. Thereby, the ejection part 10 can be attached to the operation part 50 by being screwed into the syringe 51 as shown in the figure. In addition, according to this invention, the connection of the outer cylinder 11 and the syringe 51 can select the existing means, such as undercut fitting by an unevenness | corrugation.

  Further, as shown in FIG. 2A, an annular convex portion 11 a that circulates around the axis O (circumferential direction) is provided inside the outer cylinder 11. A small-diameter portion 11a is formed on the inner side of the outer cylinder 11 adjacent to the jet port 1a (a position below the jet port 1a), and a plurality of protrusions 11b are formed at intervals in the circumferential direction. ing. Each of the protrusions 11b extends from the end portion of the small diameter portion 11a toward the rear end portion 11e of the outer cylinder 11.

Moreover, the ejection part 10 has the inner cylinder 13 arrange | positioned inside the outer cylinder 11, as shown to Fig.2 (a). The inner cylinder 13 has an open end. A plunger 14 is built in the rear end side of the inner cylinder 13. The plunger 14 can slide the inner peripheral surface of the inner cylinder 13 while being in a liquid-tight state. A stopper 15 is fixed to the tip of the inner cylinder 13. The plug body 15 is formed as a cylindrical member whose one end is closed by a partition wall portion 15a. An internal space r ₁₁ is formed inside the plug body 15.

The partition wall portion 15a is provided with a tip pin 15p that protrudes toward the ejection port 1a. Further the partition wall 15a, as shown in FIG. 2 (b), a plurality of through-holes r ₁₂ for providing communication with the internal space r ₁₁ to the outside is provided. Through hole r ₁₂ are spaced around the tip pin 15p. In the present embodiment, the through-hole r _12, as well as placing the center to the tip pin 15p of the opening formed in the partition wall portion 15a, a plurality of connecting pieces extending radially between the tip pin 15p and the partition section 15a It is formed by connecting via 15d.

  The plug 15 has an annular protrusion 15r that goes around the axis O. The annular protrusion 15r divides the plug 15 into a front barrel portion 15b and a rear barrel portion 15c. The outer peripheral surface of the rear trunk portion 15 c is held in a liquid-tight state on the inner peripheral surface of the inner cylinder 13. In particular, in this embodiment, as shown in FIG. 2B, an annular seal portion 13 p that circulates around the axis O is provided on the inner peripheral surface of the inner cylinder 13. Thereby, the contact part of the inner peripheral surface of the inner cylinder 13 and the outer peripheral surface of the stopper 15 is kept in a more liquid-tight state. An annular stepped surface formed between the annular protrusion 15r and the rear trunk 15c is in contact with the front end of the inner cylinder 13. Thereby, the front end side of the inner cylinder 13 is held in a liquid-tight state together with the outer peripheral surface of the rear barrel portion 15c.

  On the other hand, the front cylinder portion 15b is provided with an elastic cover 16 made of an elastic material that can be deformed and restored. The elastic cover 16 is formed as a cylindrical member whose one end is closed by a partition wall portion 16a. In the elastic cover 16, a cylindrical body portion 16b extending from the partition wall portion 16a is held in a liquid-tight state on the outer peripheral surface of the front body portion 15b. The rear end of the elastic cover 16 (cylindrical body portion 16b) contacts an annular step surface formed between the annular protrusion 15r and the front body portion 15b. Thereby, the rear end of the elastic cover 16 is held in a liquid-tight state together with the outer peripheral surface of the front body portion 15 b of the plug body 15.

When the elastic cover 16 is assembled to the plug body 15, the partition wall portion 16 a is disposed above the partition wall section 15 a of the plug body 15, so that the partition wall section 15 a of the plug body 15 and the partition wall section 16 a of the elastic cover 16 are arranged. to form a gap r ₁₃ between. In addition, the partition wall 16a of the elastic cover 16 is formed with an opening A through which the tip pin 15p passes. As shown in FIG. 2B, the inner edge 16e of the opening A normally contacts the tip pin 15p, thereby maintaining a liquid-tight state between the inner edge 16e of the elastic cover 16 and the tip pin 15p. When the internal pressure of the clearance r ₁₃ contrast increases, that is the inner edge 16e of the elastic cover 16 away from the distal end pin 15p, an annular opening gap r ₁₄ is formed between the inner edge 16e and the tip pin 15p (See FIG. 3). That is, in this embodiment, the inner edge 16e of the elastic cover 16 seals the space between the tip pin 15p so as to be openable.

In this way, when the elastic cover 16 is assembled together with the plug 15 to the inner cylinder 13 and the rear end side of the inner cylinder 13 is sealed by the plunger 14, the filling space S ₂ of the content liquid M sealed by the elastic cover 16 together with the plunger 14. At the same time, as shown in FIG. 2B, flow paths r _{11 to} r ₁₃ for the content liquid M are formed. As shown in FIG. 3, the flow paths r _{11 to} r ₁₃ allow the inner space 16 e of the elastic cover 16 to be separated from the tip pin ₁₅ p to form an opening gap r ₁₄ , thereby connecting the filling space S ₂ to the outside. . That is, in this embodiment, the ejection part 10 is comprised by the outer cylinder 11, the inner cylinder 13, the plunger 14, the plug body 15, and the elastic cover 16. FIG.

Further, the inner cylinder 13 is set such that when the inner cylinder 13 is assembled inside the outer cylinder 11, the elastic cover 16 forms a gap S ₁₀ between the inner cylinder 13 and the outer cylinder 11. In the present embodiment, as shown in FIG. 2A, the lower end portion (inner cylinder lower end portion) 13 b of the inner cylinder 13 is formed as a protrusion that goes around the axis O. In addition, a step (hereinafter referred to as “outer tube step”) 11 s that circulates around the axis O is formed inside the outer tube 11. The outer cylinder step 11s and the inner cylinder lower end 13b are in contact with each other, thereby limiting the amount of insertion of the inner cylinder 13 into the outer cylinder 11. Thereby, a gap S ₁₀ is formed between the outer cylinder 11 and the elastic cover 16.

In addition, the elastic cover 16 is fitted and held by a plurality of protrusions 11 b formed inside the outer cylinder 11. Accordingly, an annular gap r ₃ is formed between the inner peripheral surface of the outer cylinder 11 and the outer peripheral surface of the inner cylinder 13, and the annular protrusion 15 r of the plug body 15 and the inner peripheral surface of the outer cylinder 11. between the outer peripheral surface of an annular gap r ₄ leading to the gap r ₃ is formed. Further, a plurality of gaps r ₅ extending along the plurality of protrusions 11 b are formed between the inner peripheral surface of the outer cylinder 11 and the outer peripheral surface of the elastic cover 16. Each gap r _5, together with the leads into the gap S _10, leading to the annular gap r ₃ through the annular gap r _4.

Further, a plurality of grooves 13c are formed in the inner cylinder lower end portion 13b at intervals in the circumferential direction. For this reason, when the inner cylinder 13 is assembled inside the outer cylinder 11, the grooves 13 c lead to an annular gap r ₃ formed between the inner peripheral surface of the outer cylinder 11 and the outer peripheral surface of the inner cylinder 13. Opening r ₂ is formed.

  Next, with reference to FIGS. 1-3, the usage method of the ejection container 1 is demonstrated.

When the user attaches the ejection part 10 to the operation part 50, as shown in FIG. 1, the rear end of the plunger 14 functions as a pressing part that receives a pressing force from the front end of the plunger rod 54a. Thereby, when the operating shaft 53 is pushed in, the plunger 14 is pushed into the plunger rod 54 a, thereby pushing out the content liquid M in the filling space S ₂ toward the elastic cover 16. At this time, the sealing between the inner edge 16e of the elastic cover 16 and the tip pin 15p is not released until the content liquid M reaches a certain pressure, as shown in FIG. For this reason, the content liquid M is compressed until the sealing between the inner edge 16e and the tip pin 15p is released. The inner edge 16e of the elastic cover 16 seals between the tip pin 15p by its own elastic force against the pressure of the content liquid M, and resists the elastic force when the pressure of the content liquid M exceeds the elastic force. To open the tip pin 15p. If between the tip pins 15p of the inner edge 16e and the plug 15 of the elastic cover 16 is opened by the pressure of the liquid content M, as shown in the thin line arrows in FIG. 3, the content liquid M is the channel r ₁₁ ~ ₁₃ Through the opening gap r ₁₄ , it is pushed into the gap S ₁₀ formed between the outer cylinder 11 and the elastic cover 16 all at once.

Further, in the ejection portion 10, the inner cylinder 13 is assembled inside the outer cylinder 11, and the gap S ₁₀ forms a liquid path that allows the opening gap r ₁₄ of the elastic cover 16 to communicate with the ejection outlet 1 a. That is, by the user pushing the operating shaft 53 of the operation unit 50, the content liquid M from filling space S ₂ of the ejection portion 10, as indicated by thin line arrows in FIG. 3, spout through the gap S ₁₀ Extruded to 1a.

Further, as shown in FIG. 2A, the ejection portion 10 has the inner cylinder 13 assembled inside the outer cylinder 11, so that the grooves 13 c are respectively connected to the first air path r _1. r ₂ is formed, and a gap r ₃ between the inner peripheral surface of the outer cylinder 11 and the outer peripheral surface of the inner cylinder 13 forms a third air path r ₃ communicating with the second air path r ₂ . Further, a gap r ₄ between the inner peripheral surface of the outer cylinder 11 and the outer peripheral surface of the plug 15 forms a fourth air passage r ₄ that communicates with the third air passage r ₃ , and a plurality of protrusions 11 b. The plurality of gaps r ₅ formed along the line forms a fifth air path r ₅ that communicates with the fourth air path r ₄ . Further, the fifth air passage r ₅ leads to a gap S ₁₀ formed between the outer cylinder 11 and the elastic cover 16.

That is, when the user pushes in the operation shaft 53, the first air passage r formed between the distal end cylindrical portion 51c and the plunger rod 54a from the syringe 51 as shown by the broken line arrow in FIG. Filling air is pushed through the jetting part 10 through ₁ . As shown by the broken line arrows in the figure, this air passes through the air passages r _{2 to} r ₅ formed between the inner cylinder 13 and the outer cylinder 11 to which the elastic cover 16 is fixed together with the plug 15, and the clearance S ₁₀ Leads to Accordingly, the gap S ₁₀ forms a merging portion (hereinafter, “merging portion S ₁₀ ”) where the content liquid M from the opening gap r ₁₄ and the air from the air passage r ₄ merge.

The content liquid M pushed out from the opening gap r ₁₄ and the air pushed out from the air passage r ₅ are mixed in the merging portion S _{10 and} then pushed out to the jet outlet 1a. Thereby, the content liquid M containing air is ejected from the ejection port 1a in a mist state (including a state in which it is scattered by relatively large particles) while maintaining a constant state.

As described above, in the ejection container 1 according to the present invention, the elastic cover 16 is used to compress the content liquid M filled in the ejection portion 10 to a certain pressure, and then release it at a stroke, thereby including air. The content liquid M can be ejected in the form of a mist while maintaining a certain state. In particular, in this embodiment, since the filling space S ₂ is sealed with the plunger 14 and the elastic cover 16, it is possible to use a jet unit 10 as a cartridge.

  Moreover, in the ejection container 1 according to this invention, the operation part 50 for ejecting the content liquid M containing air can be made into another structure by filling the content liquid M in the ejection part 10. FIG. For this reason, only the ejection part 10 with which the content liquid M is filled can be reduced in size, without reducing the operation part 50 in size. Therefore, the ejection container 1 according to the present invention is effective when it is desired to spray a small amount of the content liquid M mixed with air without impairing operability.

  The ejection part 10 according to the present embodiment seals the lower end of the inner cylinder 13 with a plunger 14. For this reason, the inner cylinder 13 can be filled with the content liquid M from the upper side (plug body 15 side) of the inner cylinder 13 with the inner cylinder lower end 13b grounded. After filling the content liquid M, the ejection part 10 can be formed by assembling the stopper 15, the elastic cover 16 and the outer cylinder 11. For this reason, according to the ejection part 10 which concerns on this embodiment, filling of the content liquid M can be performed easily.

The above description only shows one embodiment of the present invention, and various modifications can be made within the scope of the claims. For example, according to the present invention, the ejection unit 10 can be configured not to be removable from the operation unit 50. In the present embodiment, the content liquid M is ejected in the form of a mist by directly connecting the joining portion S ₁₀ formed between the outer cylinder 11 and the elastic cover 16 to the ejection port 1a. By interposing a mesh ring between the elastic cover 16 and the elastic cover 16, the content liquid M can be ejected in the form of bubbles.

  The syringe-type ejection container of the present invention can be applied to various types as long as it is an ejection container for the purpose of ejecting the content liquid mixed with air. Also, the type of content liquid is not limited.

DESCRIPTION OF SYMBOLS 1 Syringe-type ejection container 1a Ejection port 10 Ejection part 11 Outer cylinder 13 Inner cylinder 13p Annular seal part 14 Plunger 15 Plug body 15a Partition part 15b Front side trunk | drum 15c Rear side trunk | drum 15d Connection piece 15p Tip pin 15r Annular protrusion 16 Elasticity cover 16a partition wall portion 16b tube-shaped body portion 16e elastic cover inner 50 operating portion 51 syringe 51a barrel 51b shoulder 51c tip tube portion 51d installation cylinder 52 the piston 53 operating the shaft 54 the rod member 54a plunger rod 54b plate A opening r ₁ 1st air path r ₂ 2nd air path r ₃ 3rd air path r ₄ 4th air path r ₅ 5th air path r ₁₁ flow path r ₁₂ flow path r ₁₃ flow path r ₁₄ opening gap S ₁₀ junction (gap) , Liquid channel)

Claims (3)

An operation unit operated by a user, and an ejection unit from which a mixed liquid of air and content liquid is ejected,
The operation portion forms an annular gap between the syringe having the tip tube portion, the piston for pushing the air in the syringe to the tip tube portion, and the tip tube portion, and from the tip tube portion by the pressing force received from the piston. A protruding rod,
The ejection part includes an outer cylinder that has an ejection port and is attached to the distal end cylinder part, an inner cylinder that is disposed inside the outer cylinder, a plunger that pushes out the content liquid filled inside the inner cylinder, and a distal end pin In addition, a plurality of through holes are provided around the tip pin at intervals to be fixed to the tip of the inner cylinder, and there is an opening through which the tip pin passes, and the inner edge of the opening is connected to the tip pin. Equipped with an elastic cover that seals between
Between the inner cylinder and the outer cylinder, to which the elastic cover is fixed together with the stopper, there is a liquid passage through which the content liquid pushed out from the opening circulates to the jet outlet, and air through which the air pushed out from the annular gap flows. A syringe-type ejection container in which a merging portion for joining a passage, the air passage, and the liquid passage is formed.   The syringe-type ejection container according to claim 1, wherein at least one mesh is disposed between the ejection port and the merging portion.   The syringe-type ejection container according to claim 1 or 2, wherein the ejection section is detachably attached to the operation section.

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