JP5972306B2 - Tube container - Google Patents

Description

  The present invention relates to a container containing a liquid, a paste-like product or the like as contents. In particular, the present invention relates to a structure of a tube container in which two kinds of contents at a certain ratio are separately stored and permit or block the outflow of the two kinds of contents through opening and closing of an opening / closing valve.

  Drugs, cosmetics, hair dyes, brush powders, medical ointments and other pasty or liquid articles are often contained in soft tubular containers. By pressing the container so as to be sandwiched from both sides, the contents in the container are pushed out. Conventionally, a typical example of such a container is a tube container having only one storage chamber and one mouth part in one container. Therefore, many types of tube containers have been used according to the type of contents, such as cosmetics, sunscreen milk, lipstick, and hair dye. It was inconvenient.

  Therefore, in recent years, it has an outer tube containing different contents and an inner tube arranged inside the outer tube, and includes one mouth part communicating with the respective storage chambers of the outer tube and the inner tube. A double-type dispenser that can simultaneously push out two types of contents from the mouth has been proposed (Patent Document 1).

JP 2007-137467 A

  However, the double-type dispenser as disclosed in Patent Document 1 is composed of a large number of parts having complicated shapes. As a result, the configuration of the dual-type dispenser becomes complicated, and the manufacturing cost of the double-type dispenser increases. Also, in a double-type dispenser, the elastic pressure generated when the contents are squeezed out may cause the contents in the vicinity of the mouth to be sucked into the tube and mixed, and if the contents are mixed If this is done, there is a risk that the contents stored separately in the inner pipe and the outer pipe may be contaminated and altered.

  The present invention has been made based on such a background, and an object of the present invention is to prevent the contents contained in the two pipes from flowing backward and mixing to prevent the contents from being contaminated and altered. Is to provide a container.

  (1) A tube container according to the present invention includes an outer cylindrical body and an outer head that is continuous with one end portion in the axial direction of the outer cylindrical body and has an opening formed on the side opposite to the outer cylindrical body. A pipe and an inner pipe are arranged coaxially with the outer pipe and are continuous with the inner cylindrical body and one end of the inner cylindrical body in the axial direction and at a position inside the opening of the outer head. An inner tube having an inner head in which an opening is formed; a lid that opens and closes the opening of the outer head and the opening of the inner head by being attached to and detached from the opening end of the outer head; and the inner head. An inner tube one-way valve having an inner valve seat formed with a valve hole for communicating the inner cylindrical body and the inner head, and an inner valve piece for opening and closing the valve hole, and an opening of the outer head Annular rectification provided on the side And an outer valve having an outer valve ring piece that is disposed inside the ring and the flow straightening ring and has a through hole that communicates with the opening of the inner head at the center. An annular outlet port is formed between the outer opening of the inner head and the inner opening of the outer head. A part of the outer periphery of the outer valve ring piece is connected to the rectifying ring, and a gap is formed between the outer periphery of the outer valve ring piece and the rectifying ring at the other part of the outer periphery. The outer valve ring piece is in contact with the opening side end portions of the outer head and the inner head to open and close the annular outlet liquid outlet.

  According to this configuration, the opening and closing of the inner tube one-way valve and the outer valve allows or prevents the two types of contents filled in the outer tube and the inner tube, respectively. Thereby, two types of contents flow backward, and contamination of the contents in the pipe is avoided.

  (2) The inner head and the inner pipe one-way valve are integrally formed of resin, and the integrally formed inner head and the inner pipe one-way valve are welded to the inner cylindrical body. It is preferable.

  (3) It is preferable that a one-way valve is formed by the opening-side end portion of the outer head, the outer valve, and the annular outlet liquid outlet.

  (4) The rectifying ring is formed with a convex rib protruding inward, and the convex rib is preferably fitted with an outer annular groove formed on the outer wall on the opening side of the outer head. .

  (5) On the outer wall of the inner head, a channel groove extending in the axial direction is formed, and an annular rib protruding outward at a position other than the channel groove is formed. It is preferable to be fitted with an inner annular groove formed in the inner wall of the outer head.

  (6) The outer tube is preferably formed by welding the outer cylindrical body and the outer head.

  (7) The lid includes a lid body and a connecting cover extending in the axial direction from the lid body toward the outer tube, and an inner screw or an inner convex rib is provided on an inner wall of the connecting cover. Preferably, the outer wall of the outer head is provided with an outer screw that can be screwed with the inner screw or an annular groove that can be fitted with the inner convex rib.

  (8) The outer shapes of the cross sections of the inner cylindrical body and the outer cylindrical body are preferably circular, elliptical, or polygonal.

  (9) The material of the inner cylindrical body and the outer cylindrical body is preferably a resin, a metal, or a composite material of a resin and a metal.

  According to this invention, it is prevented that the mixture flows back into the pipe and the contents in the pipe are contaminated.

FIG. 1 is an exploded perspective view of a tube container according to an embodiment of the present invention. FIG. 2 is an enlarged view of the outer valve 4. FIG. 3 is a plan view of the tube container. 4 is a cross-sectional view taken along the line IV-IV in FIG. FIG. 5 is a cross-sectional view of the tube container with the lid 5 removed and the contents not squeezed out. FIG. 6 is a cross-sectional view of the tube container with the contents being squeezed out.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings as appropriate. In addition, this Embodiment is only one aspect | mode of the tube container which concerns on this invention, and it cannot be overemphasized that an embodiment may be changed in the range which does not change the summary of this invention.

  1 to 6 show an outer tube 1, an inner tube 2, an inner tube one-way valve 3, an outer valve 4, a lid 5, and the like that are mainly provided in the tube container of the present embodiment.

  As shown in FIGS. 1 and 4, the outer tube 1 includes an outer cylindrical body 10 and an outer head 11. The outer head 11 includes a base 111 and a tube protrusion 112 that extends upward from the base 111. In the present embodiment, the vertical direction corresponds to the axial direction of the present invention. At least one inner annular groove 1121 is provided on the inner wall of the tube protrusion 112. An outer thread 1123 is provided on the outer wall of the tube protrusion 112. One outer annular groove 1122 is provided on the outer wall of the outlet end of the tube protrusion 112.

  As shown in FIGS. 1 and 4, the inner tube 2 includes an inner cylindrical body 20 and an inner head 21. The inner head 21 includes an inner base portion 211, a hollow mounting portion 212 provided on the inner base portion 211, and an inner tube protruding portion 213 extending from the mounting portion 212. At least one annular rib 2121 is provided on the outer wall of the mounting portion 212. Two flow channel grooves 2122 communicating with the inside of the outer tube 1 are provided on the outer wall of the mounting portion 212 symmetrically in the vertical direction with an interval therebetween.

  The inner tube 2 is disposed inside the outer tube 1. By fitting the annular rib 2121 into the inner annular groove 1121 of the outer head 11, the mounting portion 212 is tightened inside the tube protruding portion 112 of the outer head 11. As a result, as shown in FIG. 4, an annular outlet liquid outlet 1120 is formed between the upper end outer wall of the inner tube protruding portion 213 and the inside of the outlet of the tube protruding portion 112 of the outer head 11.

  As shown in FIGS. 1 and 4, the inner pipe one-way valve 3 is provided at the end of the lower opening of the inner pipe protrusion 213 of the inner head 21. The inner pipe one-way valve 3 is used for controlling the outflow of the contents of the inner pipe 2. The inner pipe one-way valve 3 includes a valve seat 31 having a valve hole 311 (corresponding to an “inner valve seat” recited in the claims), and a cover 32 extending upward from the periphery of the valve seat 31. And one inner valve piece 2131 covering the valve hole 311. The inner valve piece 2131 extends in the lateral direction from the lower opening of the inner pipe protrusion 213. A groove 321 is provided on the inner wall of the cover 32. On the other hand, one annular convex rib 2132 is provided on the outer wall of the lower opening end of the inner pipe protrusion 213. An annular convex rib 2132 is fitted in the groove 321. As a result, the valve seat 31 is fitted to the end of the lower opening of the inner pipe protrusion 213.

  As shown in FIGS. 1, 2, and 4, the outer valve 4 includes one rectifying ring 41 and an outer valve ring piece 42 in which a through hole 421 is formed in the center. The outer valve ring piece 42 is located inside the rectifying ring 41. The inner wall of the rectifying ring 41 is connected to the outer wall of the outer valve ring piece 42 through one narrow connecting portion 43. A uniform gap 422 is formed between the inner wall of the rectifying ring 41 excluding the connecting portion 43 and the outer wall of the outer valve ring piece 42. A convex rib 411 is provided inside the lower opening of the rectifying ring 41.

  The outer valve 4 is attached to the outlet end of the tube protrusion 112 of the outer head 11. The convex rib 411 is fitted in the outer annular groove 1122 of the tube protruding portion 112. The outer valve ring piece 42 covers the outside liquid outlet 1120 from above by coming into contact with the upper end of the tube projecting portion 112 and the upper end of the inner tube projecting portion 213. Thereby, the outer valve ring piece 42 controls the outflow of the contents of the outer tube 1. On the other hand, the through hole 421 of the outer valve ring piece 42 and the outlet of the inner pipe protrusion 213 are in communication from beginning to end.

  As shown in FIGS. 1, 3, and 4, the lid 5 includes a lid body 53, an outer wall 52 that extends downward from the periphery of the lower surface of the lid body 53, and a lower side from the inside than the periphery of the lower surface of the lid body 53. And an articulating cover 51 extending in the direction. An inner screw 511 is provided on the inner wall of the connecting cover 51. The inner screw 511 can be screwed with an outer screw 1123 provided on the outer wall of the tube protruding portion 112. The lid 5 is fixed to the outer tube 1 by the inner screw 511 and the outer screw 1123 being screwed together. In a state where the lid 5 is fixed to the outer tube 1, the lower surface of the lid 5 contacts the upper end portion 412 of the outer valve 4. On the outer wall of the connecting cover 51, reinforcing ribs 513 are provided vertically. As a result, the strength of the connecting cover 51 is increased.

  An inner convex rib (not shown) is provided on the inner wall of the connecting cover 51 of the lid 5 instead of the inner screw 511, and an annular groove is provided on the outer wall of the tube protruding portion 112 instead of the outer screw 1123. It may be. Then, the lid 5 is attached to the outer tube 1 by fitting the inner convex rib with the annular groove, and the lid 5 may be removed from the outer tube 1 by releasing the fitting. .

  The outlet end portion of the tube protruding portion 112 of the outer head 11 and the outer valve ring piece 42 of the outer valve component 4 cover the outlet liquid outlet 1120 and constitute one unidirectional outer valve.

  The inner head 21 and the inner valve piece 2131 are integrally formed of a resin such as a plastic material. During this molding, the inner cylindrical body 20 is welded. The outer tube 1 is formed by welding an outer cylindrical body 10 and an outer head 11. The inner tube 2 is coaxially arranged inside the outer tube 1 to form a tube container.

  As the material of the outer cylindrical body 10 of the outer tube 1 and the inner cylindrical body 20 of the inner tube 2, a resin material, a metal material, or a composite material of a resin material and a metal material is selected. For example, the outer cylindrical body 10 and the inner cylindrical body 20 are configured by a PE pipe, a PP pipe, a Co-ex pipe, an EVOH composite pipe, an aluminum pipe, a laminate pipe, a polytoil pipe, and the like. The outer cylindrical body 10 and the inner cylindrical body 20 may be filled with different contents. The outer shapes of the cross sections of the inner cylindrical body 20 and the outer cylindrical body 10 are circular, elliptical, polygonal, and the like.

  After the tube container is assembled, two kinds of contents are separately filled from behind (below) the outer tube 1 and the inner tube 2. Thereafter, the back of the outer tube 1 and the inner tube 2 is sealed. The two types of contents are paste or liquid, and are lipstick, ointment, hair dye and the like.

  As shown in FIG. 5, the outer valve ring piece 42 of the outer valve 4 covers the outlet liquid outlet 1120 when the tube container is not used. Thereby, the outflow of the first type contents in the outer tube 1 is prevented. Further, the inner valve piece 2131 covers the valve hole 311 of the inner valve seat 31, whereby the inner pipe one-way valve 3 closes the end of the lower opening of the inner pipe projecting portion 213. Thereby, the outflow of the second type contents in the inner pipe 2 is prevented.

  As shown in FIG. 6, when the tube container is used, when the lid 5 is opened and the outer cylindrical body 10 and the inner cylindrical body 20 are pressed by hand, the first type contents in the outer tube 1 are used. However, it flows through the flow channel 2122 by pushing the outer valve ring piece 42 from the outlet liquid outlet 1120.

  At the same time, the second type contents in the inner pipe 2 pass through the valve hole 311 to push open the inner valve piece 2131. As a result, the second type contents enter the inner tube protrusion 213 and flow out of the through hole 421 on the outer valve ring piece 42 through the outlet of the inner tube protrusion 213. As a result, the second type contents are mixed with the first type contents that have flowed out of the outer tube 1 and then flowed out of the tube container.

  When the pressing is stopped, the negative pressure of the inner pipe 2 is applied to the inner valve piece 2131 of the inner pipe one-way valve 3. Thereby, since the inner valve piece 2131 is closed, the backflow of two kinds of contents is prevented. As a result, a phenomenon in which the mixed contents flow backward and the contents of the inner pipe 2 and the outer pipe 1 are contaminated is avoided.

[Effect of the embodiment]

  According to this embodiment, the opening and closing of the inner tube one-way valve 3 and the outer valve 4 allow or block the flow of two types of contents filled in the outer tube 1 and the inner tube 2 respectively. Thereby, the backflow of two types of contents is prevented, and mixing and contamination of the contents are avoided.

1: Outer pipe 10: Outer cylindrical body 11: Outer head 111: Base 112: Pipe protrusion 1121: Inner annular groove 1122: Outer annular groove 1123: Outer screw 1120: Annular outlet liquid outlet 2: Inner pipe 20: Inner cylinder Shape 21: Inner head 211: Inner base 212: Mounting portion 2121: Annular rib 2122: Channel groove 213: Inner tube protrusion 2131: Inner valve piece 2132: Annular convex rib 3: Inner tube one-way valve 31: Inner valve Seat 311: Valve hole 32: Cover 321: Groove 4: Outer valve 41: Rectifying ring 411: Convex rib 412: Upper end 42: Outer valve ring piece 421: Through hole 422: Gap 43: Connection part 5: Lid 51: Connection Tube (joint cover)
511: Inner screw 513: Reinforcing rib 52: Outer wall 53: Lid body

Claims (9)

An outer tube having an outer head that is continuous with one end in the axial direction of the outer cylindrical body and the outer cylindrical body and has an opening formed on the opposite side of the outer cylindrical body;
It is arranged on the inner side of the outer tube and coaxially with the outer tube, and has an opening at a position that is continuous with the inner cylindrical body and one end of the inner cylindrical body in the axial direction and inside the opening of the outer head. An inner tube having an inner head formed;
A lid that opens and closes the opening of the outer head and the opening of the inner head by being attached to and detached from the opening side end of the outer head;
An inner tube one-way valve provided on the inner head and having an inner valve seat in which a valve hole for communicating the inner cylindrical body and the inner head is formed;
An annular rectifying ring provided on the opening side of the outer head, and an outer valve having an outer valve ring piece disposed inside the rectifying ring and having a through hole communicating with the opening of the inner head at the center. Prepared,
The inner head includes an inner valve piece for opening and closing the valve hole,
Between the opening outside of the inner head and the opening inside of the outer head, an annular outlet liquid outlet is formed,
A part of the outer periphery of the outer valve ring piece is connected to the rectifying ring, and a gap is formed between the outer rim and the rectifying ring in the remaining part of the outer periphery.
The outer valve ring piece is a tube container that abuts on an opening side end of the outer head and the inner head to open and close the annular outlet liquid outlet. The inner head and the inner pipe one-way valve are integrally formed of resin,
The tube container according to claim 1, wherein the inner head and the inner pipe one-way valve are welded to the inner cylindrical body.   The tube container according to claim 1 or 2, wherein a one-way valve is formed by an opening-side end portion of the outer head, the outer valve, and the annular outlet liquid outlet. A convex rib protruding inward is formed on the rectifying ring,
The tube container according to any one of claims 1 to 3, wherein the convex rib is fitted with an outer annular groove formed in an outer wall on the opening side of the outer head. On the outer wall of the inner head, a channel groove extending in the axial direction is formed, and an annular rib protruding outward at a position other than the channel groove is formed,
The tube container according to any one of claims 1 to 4, wherein the annular rib is fitted into an inner annular groove formed in an inner wall of the outer head.   The tube container according to any one of claims 1 to 5, wherein the outer tube is formed by welding the outer cylindrical body and the outer head. The lid is
A lid body, and a connecting cover extending in the axial direction from the lid body toward the outer tube,
Inner threads or inner convex ribs are provided on the inner wall of the connecting cover,
The tube container according to any one of claims 1 to 6, wherein an outer thread of the outer head is provided with an outer thread that can be screwed with the inner thread or an annular groove that can be fitted with the inner convex rib.   The tube container according to any one of claims 1 to 7, wherein an outer shape of a cross section of the inner cylindrical body and the outer cylindrical body is a circle, an ellipse, or a polygon.   The tube container according to any one of claims 1 to 8, wherein a material of the inner cylindrical body and the outer cylindrical body is resin, metal, or a composite material of resin and metal.

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