JP6655494B2 - Discharge container - Google Patents

Description

  The present invention relates to a discharge container.

  2. Description of the Related Art Conventionally, a syringe-shaped discharge container including a cylinder accommodating contents and having a discharge hole formed at an axial end portion, and a piston fitted movably in the axial direction in the cylinder. Is known (for example, see Patent Document 1 below). In this type of discharge container, the content is discharged through a discharge hole by pushing the piston toward the distal end in the axial direction with respect to the cylinder.

JP-A-2002-721

  By the way, in the conventional discharge container, in order to continuously discharge the contents, it is necessary to keep pushing the piston toward the distal end side in the axial direction. Therefore, in the conventional discharge container, there is still room for improvement in further improving the operability.

  Then, this invention is made | formed in view of the above-mentioned situation, and an object of this invention is to provide the discharge container which can improve operability.

In order to solve the above problems, the present invention proposes the following means.
The discharge container according to the present invention is configured such that a content is accommodated therein, and a storage cylinder in which a through-hole for the content is formed at an end portion in an axial direction, and the axially movable relative to the storage cylinder. A middle plate fitted in the storage tube, a first biasing member disposed in the storage tube, and biasing the middle plate toward the distal end in the axial direction; A valve body formed at a portion facing the base end in the axial direction, abuts on the base end in the axial direction so as to be releasable, and shuts off communication between the passage hole and the inside of the housing cylinder. The housing cylinder is accommodated movably in the axial direction, and a cover body having a discharge hole that communicates with the passage hole and discharges the contents is provided. When moving to the distal end side in the axial direction, the valve body is directed toward the proximal end side in the axial direction through the passage hole. Push protrusions are formed Komu to.

According to this configuration, when the housing cylinder moves to the distal end side in the axial direction, the push projection that pushes the valve body toward the base end side in the axial direction through the passage hole is formed on the cover body. Therefore, the valve body shifts to an open state in which the valve body is separated from the valve seat in accordance with the pushing operation of the housing cylinder during the discharging operation. Then, when the valve is opened, the inside of the housing cylinder and the discharge hole communicate with each other through the passage hole. At this time, since the inner plate is urged toward the distal end in the axial direction by the first urging member, the inner plate is moved toward the distal end in the axial direction by the urging force (restoring force) of the first urging member. Move towards. As a result, the inside of the housing cylinder is pressurized, and the content flows through the gap between the valve body and the valve seat in the housing cylinder toward the distal end in the axial direction. Thereafter, the content flows into the cover through the passage hole, and is discharged toward the discharge target portion through the discharge hole.
As described above, according to this aspect, since the inner plate is urged toward the distal end in the axial direction by the first urging member, the inner plate automatically moves to the distal end in the axial direction in the valve open state. . As a result, the contents can be continuously discharged only by maintaining the valve open state. Thereby, the operability can be improved as compared with the conventional case where the piston is continuously pushed in to continuously discharge the contents as in the related art.

In the discharge container according to the present invention, a second urging member that urges the valve body toward the valve seat may be provided in the housing cylinder.
According to this configuration, by moving the housing cylinder from the valve open state to the base end side in the axial direction, the pushing protrusion moves in the direction to retreat from the valve body (the distal end side in the axial direction). Then, the valve body is moved to the distal end side in the axial direction by the urging force of the second urging member, and is again seated on the valve seat. Thus, the discharge of the contents can be stopped, so that it is possible to prevent all the contents from flowing out by a single discharge operation. Therefore, for example, the contents can be repeatedly discharged from the discharge container in the same storage cylinder.

In the discharge container according to the aspect of the invention, in the cover body, in a state where the housing cylinder is housed in the cover body, the axial end of the housing cylinder is tightly fitted so as to be movable in the axial direction. May be formed.
According to this configuration, while guiding the axial movement of the housing cylinder with respect to the syringe body, the sealing property between the housing cylinder and the cover body can be ensured, and the content flowing out of the housing cylinder leaks into the cover body. Can be suppressed.

In the discharge container according to the present invention, a stopper that restricts movement of the inner plate toward the distal end side in the axial direction with respect to the storage cylinder by the urging force of the first urging member is detachably attached to the storage cylinder. It may be.
According to this structure, the movement of the inner plate toward the distal end in the axial direction with respect to the storage cylinder due to the urging force of the first urging member is regulated by the stopper, so that the contents are applied by the urging force of the first urging member. Pressing can be suppressed. For this reason, in the distribution stage, the storage stage, and the like, it is possible to prevent the contents from unexpectedly leaking from the housing cylinder through a seal portion, for example, between the valve body and the valve seat or between the inner plate and the housing cylinder.

In the discharge container according to the present invention, the housing cylinder, the inner plate, the first biasing member, and the valve body may constitute a cartridge that is detachable from the cover body.
According to this configuration, since the cartridge is configured to be detachable from the cover, the discharge container can be repeatedly used without changing the cover simply by replacing the used cartridge.

  According to the discharge container according to the present invention, operability can be improved.

It is a fragmentary sectional view showing the state at the time of distribution of the discharge container concerning an embodiment. It is an exploded sectional view of a discharge container concerning an embodiment. It is a fragmentary sectional view showing the state at the time of use of the discharge container concerning an embodiment. FIG. 10 is a partial cross-sectional view of a cartridge according to another configuration of the embodiment. FIG. 13 is a cross-sectional view of a cartridge according to another configuration of the embodiment. FIG. 10 is a partial cross-sectional view of a cartridge according to another configuration of the embodiment. FIG. 13 is a cross-sectional view of a cartridge according to another configuration of the embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the discharge container 1 of the present embodiment has a syringe shape. The discharge container 1 includes a cylindrical syringe main body 2 and a bottomed cylindrical cartridge 3 configured to be detachable from the syringe main body 2. The central axes of the syringe body 2 and the cartridge 3 are located on a common axis. Hereinafter, the common shaft is referred to as a container shaft O, and the side of the syringe body 2 in the axial direction along the container shaft O is referred to as a distal end side, and the side of the cartridge 3 is referred to as a proximal end side. Further, a direction orthogonal to the container axis O is referred to as a radial direction, and a direction around the container axis O is referred to as a circumferential direction.

The syringe main body 2 mainly includes a cover body 11, a discharge cylinder 12, and a finger hook 13. In the present embodiment, the syringe body 2 is formed integrally.
The cover body 11 is formed in a topped cylindrical shape. The cylindrical portion 11a of the cover body 11 is formed such that the inner diameter at the proximal end in the axial direction is larger than the inner diameter at the distal end. A cover projection 15 is formed at a base end portion in the axial direction of the cylindrical portion 11a so as to project inward in the radial direction.

  The top wall portion 11b of the cover body 11 closes an axial end opening of the cylindrical portion 11a. The top wall portion 11b of the present embodiment extends inclining toward the distal end in the axial direction as the outer peripheral portion goes inward in the radial direction, and the inner peripheral portion extends perpendicular to the container axis O. I have. However, the top wall portion 11b may be entirely orthogonal to the container axis O or may be entirely inclined with respect to the container axis O.

  A guide tube 21 is formed on the outer peripheral portion of the top wall portion 11b so as to extend in the cover body 11 toward the base end in the axial direction. A connecting cylinder 22 is formed on the inner peripheral portion of the top wall portion 11b so as to extend in the cover body 11 toward the base end in the axial direction. The proximal end of the connecting cylinder 22 in the axial direction is located closer to the distal end in the axial direction than the proximal end of the guide cylinder 21 in the axial direction.

At the center in the radial direction of the top wall 11b, a pushing projection 23 is formed which projects toward the base end in the axial direction. The pushing projection 23 is formed in a rod shape coaxial with the container axis O. The axial length of the pushing protrusion 23 is shorter than that of the connecting cylinder 22. Note that the pushing protrusion 23 does not have to be arranged coaxially with the container axis O.
Further, a discharge hole 24 is formed in a portion of the top wall portion 11b which is located radially inside the connecting cylinder 22 and around the pushing protrusion 23. The discharge hole 24 passes through the top wall 11b in the axial direction. The discharge holes 24 are formed at intervals in the circumferential direction. In addition, the shape and the number of the discharge holes 24 can be appropriately changed.

  The discharge cylinder 12 is provided so as to protrude from the top wall 11b toward the distal end in the axial direction. The discharge cylinder 12 surrounds the discharge hole 24 from the outside in the radial direction, and communicates with the inside of the cover body 11 through the discharge hole 24. The discharge cylinder 12 is removably fitted with a cap 26 for closing the axial opening of the discharge cylinder 12. The cap 26 prevents the discharge hole 24 from being opened through the discharge cylinder 12 in the flow stage of the discharge container 1. In the present embodiment, the cap 26 is screwed to the discharge cylinder 12. However, as long as the cap 26 is detachably attached to the discharge cylinder 12, the cap 26 may be attached by a method other than screwing (for example, undercut fitting).

  The finger hook 13 is provided so as to protrude radially outward from a base end edge in the axial direction of the cylindrical portion 11a. In the present embodiment, the finger hook 13 is formed in an annular shape surrounding the entire circumference of the cylindrical portion 11a. However, the finger hanging portion 13 may be configured so that a finger or the like can be hooked when the discharge container 1 is used. For example, the finger hook 13 may be formed only on a part of the cylindrical portion 11a in the circumferential direction. In addition, the finger hook 13 may be formed in a middle portion of the cylindrical portion 11a in the axial direction.

  The cartridge 3 is detachably attached to the syringe main body 2 by being inserted into the syringe main body 2 from the base end side in the axial direction. In the following description, the configuration of the cartridge 3 will be described based on a state in which the cartridge 3 is mounted in the syringe main body 2.

The cartridge 3 of the present embodiment mainly includes a storage tube 31, a bottom tube portion 32, a middle plate 33, and a pedestal portion 34.
The housing cylinder 31 is configured to be movable in the axial direction with respect to the syringe main body 2 in a state where the distal end portion in the axial direction is inserted into the syringe main body 2. The storage cylinder 31 is formed in a multi-stage cylindrical shape having a smaller diameter as it is positioned closer to the distal end in the axial direction. Specifically, in the housing cylinder 31, a large diameter portion 41, a medium diameter portion 42, and a small diameter portion 43 are connected in the axial direction via flange portions 44 and 45.

  A discharge projection 51 protruding outward in the radial direction is formed at a tip end in the axial direction of the large diameter portion 41. When the cartridge 3 is mounted in the syringe main body 2, the ejection projection 51 can be locked to the above-described cover projection 15 from the distal end side in the axial direction. This restricts the movement of the cartridge 3 toward the proximal end in the axial direction with respect to the syringe body 2. Note that as long as at least one of the ejection projections 51 and the cover projection 15 is formed over the entire circumference, the other projection may be formed intermittently in the circumferential direction.

  The middle diameter portion 42 is formed to have a smaller diameter than the above-described guide cylinder 21 of the syringe body 2. The middle diameter portion 42 has entered the guide cylinder 21 from the base end side in the axial direction. The first flange portion 44 that connects the large-diameter portion 41 and the middle-diameter portion 42 of the housing cylinder 31 faces the guide cylinder 21 in the axial direction.

  The small diameter portion 43 has an outer diameter smaller than that of the connecting cylinder 22 described above, and an inner diameter larger than that of the pushing protrusion 23. The small diameter portion 43 has entered the connecting cylinder 22 from the base end side in the axial direction. Further, the above-described pushing protrusion 23 enters the small diameter portion 43 from the distal end side in the axial direction. On the outer peripheral surface of the small diameter portion 43, regulating rings 52 and 53 projecting outward in the radial direction are formed. Two regulating rings 52 and 53 are provided at intervals in the axial direction. Each of the restriction rings 52 and 53 is formed over the entire circumference of the small diameter portion 43.

  An O-ring 54 is externally fitted to a portion of the small diameter portion 43 that is located between the above-described restriction rings 52 and 53. The O-ring 54 is in close contact with the outer peripheral surface of the small diameter portion 43 and the inner peripheral surface of the connecting cylinder 22. Thus, the small diameter portion 43 is closely fitted to the connecting cylinder 22 via the O-ring 54 so as to be movable in the axial direction with respect to the syringe main body 2. The opening at the distal end in the axial direction of the small-diameter portion 43 forms a passage hole 43a that can communicate with the inside and outside of the cartridge 3. The passage hole 43a can communicate with the outside of the syringe body 2 through the discharge hole 24 described above.

  Further, a valve seat 55 is formed at a connection portion between the base end portion in the axial direction of the small diameter portion 43 and the second flange portion 45 connecting between the small diameter portion 43 and the middle diameter portion 42. The valve seat 55 extends radially inward toward the distal end side in the axial direction. The inner surface of the valve seat 55 constitutes a valve seat surface facing radially inward and toward the base end in the axial direction. Note that the valve seat surface may be at least facing the base end side in the axial direction.

  In addition, the second flange portion 45 faces the connection tube 22 described above in the axial direction. The second flange portion 45 is configured to be able to abut the connecting cylinder 22 in the axial direction when the cartridge 3 is moved to the distal end side in the axial direction with respect to the syringe main body 2. That is, the connecting cylinder 22 regulates the movement of the cartridge 3 toward the distal end in the axial direction with respect to the syringe body 2. The movement of the cartridge 3 toward the distal end in the axial direction with respect to the syringe body 2 may be restricted by the axial contact between the first flange portion 44 and the guide cylinder 21.

The above-described bottom cylindrical portion 32 is formed in a bottomed cylindrical shape. The bottom cylindrical portion 32 is fitted to the axial base end of the housing cylinder 31 to close the axial base opening of the housing cylinder 31. An inner cylinder 61 extending toward the distal end in the axial direction is formed in a portion of the bottom wall 32a of the bottom cylinder 32 that is located radially inward of the housing cylinder 31. A rib 62 protruding radially inward is formed on the inner peripheral surface of the inner cylinder 61. The rib 62 has a base end in the axial direction connected to the bottom wall 32a. The plurality of ribs 62 are provided on the inner peripheral surface of the inner cylinder 61 at intervals in the circumferential direction.
A first guide column 64 extending toward the distal end side in the axial direction is formed in a portion of the bottom wall portion 32a located radially inward with respect to the inner cylinder 61. The first guide column 64 protrudes more toward the distal end side in the axial direction than the inner cylinder 61. In the illustrated example, a finger contact recess 65 that is recessed toward the distal end in the axial direction is formed on the base end surface in the axial direction of the bottom wall portion 32a.

  An air vent hole 66 is formed in a portion of the bottom wall portion 32a located radially outside of the first guide column 64. The air vent hole 66 passes through the bottom wall 32a in the axial direction. Thereby, the air vent hole 66 communicates the space defined by the inner plate 33 and the bottom cylindrical portion 32 in the cartridge 3 with the outside of the cartridge 3. The configuration of the interior of the cartridge 3 that allows the space defined by the inner plate 33 and the bottom cylindrical portion 32 to communicate with the outside of the cartridge 3 can be appropriately changed in design. For example, a communication groove or the like extending from the inner peripheral surface to the outer peripheral surface through the axial base end edge may be formed at the axial base end of the large diameter portion 41.

The inner tray 33 is fitted in the housing cylinder 31 so as to be movable in the axial direction with respect to the housing cylinder 31. The middle plate 33 has a middle plate main body 71 and a sliding cylinder 72.
The inner plate main body 71 is formed in a topped cylindrical shape. The inner plate main body 71 is externally inserted into the above-described first guide column 64 from the distal end side in the axial direction. In a state where the unused cartridge 3 is mounted on the syringe main body 2, the base end edge in the axial direction of the inner plate main body 71 approaches or contacts the rib 62 from the distal end side in the axial direction.

  The sliding cylinder 72 surrounds the inner plate main body 71 from the outside in the radial direction. The outer diameter of the sliding cylinder 72 is gradually reduced from both sides in the axial direction toward the center. The sliding cylinder 72 is connected to the peripheral wall of the inner plate main body 71 at the center in the axial direction. Both ends of the sliding cylinder 72 in the axial direction are slidably in close contact with the inner peripheral surface of the housing cylinder 31 (large-diameter portion 41).

  A first urging member 73 that urges the inner plate 33 toward the distal end side in the axial direction is interposed between the inner plate 33 and the bottom cylindrical portion 32. The first biasing member 73 is a coil spring such as a circle arranged coaxially with the container axis O. The first biasing member 73 is externally inserted into the first guide column 64 described above. As a result, the first urging member 73 is guided by the first guide column 64 in the axial direction while the radial movement of the first biasing member 73 with respect to the bottom cylindrical portion 32 is restricted by the first guide column 64. The distal end in the axial direction of the first biasing member 73 is in contact with the top of the inner plate main body 71 from the proximal end in the axial direction. An axial base end of the first urging member 73 is in contact with the bottom wall portion 32a of the bottom cylindrical portion 32 from the axial front end side. The first urging member 73 is interposed between the inner plate 33 and the bottom cylinder 32 in a state where the first urging member 73 is compressed in the axial direction.

  In the present embodiment, the contents are accommodated in a space (accommodation space C) located in the accommodation cylinder 31 on the tip side in the axial direction with respect to the inner tray 33. The contents may be filled from the large-diameter portion 41 side of the storage cylinder 31 or from the small-diameter portion 43 side.

  The pedestal portion 34 described above is formed in a bottomed cylindrical shape. The pedestal portion 34 is fixed in the housing cylinder 31 by fitting the peripheral wall portion into the above-described middle diameter portion 42 of the housing cylinder 31 from the base end side in the axial direction. A second guide column 76 is formed at the radially central portion of the bottom wall portion 34a of the pedestal portion 34 and extends toward the distal end in the axial direction. The distal end in the axial direction of the second guide column 76 is located closer to the proximal end in the axial direction than the valve seat 55 described above. A communication hole 77 that penetrates the bottom wall portion 34a in the axial direction is formed in a portion of the bottom wall portion 34a that is located outside the second guide column 76 in the radial direction. The communication hole 77 communicates the distal end portion and the proximal end portion in the axial direction with the pedestal portion 34 in the housing cylinder 31. In the present embodiment, the communication holes 77 are formed in the bottom wall portion 34a at intervals in the circumferential direction.

  Here, a valve body 81 is provided in the housing cylinder 31 so as to be separable from the valve seat surface of the valve seat 55 described above. The valve body 81 is formed in a spherical shape. The valve element 81 closes an axial base opening of the small-diameter portion 43 when the valve body 81 is seated on the valve seat surface. The valve body 81 faces the above-described pushing protrusion 23 in the axial direction. The valve body 81 is pushed in the housing cylinder 31 toward the proximal end in the axial direction by the pushing projection 23 as the cartridge 3 moves toward the distal end in the axial direction with respect to the syringe main body 2. The valve body 81 communicates the inside and outside of the cartridge 3 through the small diameter portion 43 (the passage hole 43a) in a valve-open state in which the valve body 81 is separated from the valve seat surface toward the base end in the axial direction by being pushed by the pushing protrusion 23.

  In addition, a second biasing member 82 that biases the valve body 81 toward the valve seat surface (the end in the axial direction) is interposed between the valve body 81 and the bottom wall portion 34a of the pedestal portion 34. The second biasing member 82 is externally inserted into the second guide column 76. Thus, the second biasing member 82 is guided by the second guide column 76 in the elastic deformation in the axial direction in a state where the movement in the radial direction with respect to the pedestal portion 34 is restricted by the second guide column 76. The distal end in the axial direction of the second biasing member 82 is in contact with the valve body 81 from the proximal end in the axial direction. The base end in the axial direction of the second biasing member 82 is in contact with the bottom wall 34 a of the pedestal 34 from the front end in the axial direction.

Next, a method of using the above-described discharge container 1 will be described.
First, a method of attaching the cartridge 3 to the syringe main body 2 will be described.
As shown in FIG. 2, in order to mount the cartridge 3 on the syringe main body 2, the small diameter portion 43 of the cartridge 3 is directed toward the distal end in the axial direction, and the cartridge 3 is inserted through the proximal opening in the axial direction of the syringe main body 2. 3 is inserted into the syringe body 2. Then, the ejection protrusion 51 of the cartridge 3 contacts the cover protrusion 15 from the base end side in the axial direction. In this state, when the cartridge 3 is further pushed into the distal end side in the axial direction, the ejection projection 51 passes over the cover projection 15 in the axial direction. Further, the middle diameter portion 42 of the storage tube 31 enters the guide tube 21, and the small diameter portion 43 is fitted into the connection tube 22 via the O-ring 54. Thereby, the cartridge 3 is mounted on the syringe main body 2.

  When removing the cartridge 3 from the syringe main body 2, the cartridge 3 is pulled out toward the proximal end side in the axial direction with respect to the syringe main body 2. Thereby, the cartridge 3 is detached from the syringe main body 2 by the operation opposite to the above-described mounting operation.

Subsequently, the discharge operation of the discharge container 1 will be described.
As shown in FIG. 1, in order to discharge the contents using the discharge container 1, first, the cap 26 is removed from the syringe body 2 (discharge tube 12).

Subsequently, as shown in FIG. 3, the discharge nozzle 100 is mounted on the discharge tube 12. The discharge nozzle 100 has a mounting cylinder 101 detachably attached to the discharge cylinder 12, and a nozzle cylinder 102 extending from the axial front edge of the mounting cylinder 101 to the axial front side. .
The nozzle cylinder 102 has a smaller diameter than the mounting cylinder 101. The nozzle cylinder 102 communicates with the inside of the syringe main body 2 through the discharge cylinder 12. The axial end opening of the nozzle cylinder 102 forms a nozzle hole 102a for discharging the contents. Note that the configuration of the discharge nozzle 100 can be changed as appropriate. For example, in the illustrated example, the nozzle cylinder 102 linearly extends with a uniform inner diameter, but may decrease in diameter toward the distal end in the axial direction, or may be bent in the axial direction. It does not matter.

  Subsequently, the discharge container 1 is gripped while the finger or the like is hooked on the finger hook 13 and the finger or the like is pressed against the finger holding recess 65. Then, with the nozzle cylinder 102 (nozzle hole 102a) facing a portion to be ejected (not shown), the cartridge 3 is pushed toward the front end side in the axial direction via the finger contact concave portion 65. As a result, the cartridge 3 moves toward the distal end in the axial direction with respect to the syringe body 2.

  When the cartridge 3 moves toward the distal end in the axial direction with respect to the syringe main body 2, the pushing protrusion 23 moves in the small diameter portion 43 toward the proximal end in the axial direction. Thereby, the pushing protrusion 23 comes into contact with the valve body 81 from the distal end side in the axial direction. In this state, when the cartridge 3 is further pushed into the distal end side in the axial direction, the valve body 81 is pushed by the pushing projection 23 toward the base end side in the axial direction (the direction against the urging force of the second urging member 82). As a result, the valve body 81 is in a valve-open state in which it is separated from the valve seat surface. In the present embodiment, the valve is set to be in the open state before the second flange portion 45 comes into contact with the connecting cylinder 22 in the axial direction. Therefore, at the time of discharging the contents, the valve can be reliably opened only by pushing the cartridge 3 until the second flange portion 45 abuts (engages) with the connecting cylinder 22 in the axial direction. In this case, the movement of the cartridge 3 toward the distal end side in the axial direction with respect to the syringe main body 2 is regulated, so that the valve opening state can be easily determined, so that the operability can be improved.

  When the cartridge 3 is opened, the inside of the housing cylinder 31 and the discharge hole 24 communicate with each other through the passage hole 43a. Then, the inner tray 33 is moved toward the distal end side in the axial direction in the housing cylinder 31 by the urging force (restoring force) of the first urging member 73. Thereby, the storage space C of the storage cylinder 31 is pressurized, and the contents flow into the small diameter portion 43 through the gap between the valve body 81 and the valve seat 55. The content that has flowed into the small diameter portion 43 flows into the connecting cylinder 22 of the syringe body 2 through the passage hole 43a, and then flows into the discharge cylinder 12 through the discharge hole 24. The content that has flowed into the discharge cylinder 12 is discharged through the discharge nozzle 100 from the nozzle hole 102a toward the discharge target portion.

  In the discharge container 1 of the present embodiment, since the inner plate 33 is urged toward the distal end in the axial direction by the first urging member 73, the inner plate 33 moves toward the distal end in the axial direction in the valve open state. Is continued. Therefore, the contents are continuously discharged from the nozzle hole 102a only by supporting the cartridge 3 from the base end side in the axial direction to such an extent that the valve opening state is maintained.

  In order to stop the discharge of the contents, for example, a finger or the like is released from the cartridge 3 (finger contact recess 65), and the support of the cartridge 3 from the base end side in the axial direction is released. Then, the valve body 81 is moved to the distal end side in the axial direction by the urging force (restoring force) of the second urging member 82. At this time, the valve body 81 moves to the distal end side in the axial direction while pushing the syringe main body 2 toward the distal end side in the axial direction with respect to the cartridge 3 via the pushing protrusion 23. Thereafter, the valve body 81 is seated on the valve seat surface, so that the valve is closed. When the valve is closed, communication between the inside and outside of the housing cylinder 31 through the passage hole 43a is blocked by the valve body 81.

As described above, in the present embodiment, as the cartridge 3 moves toward the distal end in the axial direction with respect to the syringe main body 2, the pushing protrusion 23 that pushes the valve body 81 toward the proximal end in the axial direction is formed on the syringe main body 2. Configuration.
According to this configuration, the valve element 81 can be moved to the valve-open state in accordance with the pushing operation of the cartridge 3. In the present embodiment, since the inner plate 33 is urged toward the distal end in the axial direction by the first urging member 73, the inner plate 33 automatically moves to the distal end in the axial direction in the valve-open state. . As a result, the contents can be continuously discharged only by maintaining the valve open state. Thereby, the operability can be improved as compared with the conventional case where the piston is continuously pushed in to continuously discharge the contents as in the related art.

In the present embodiment, the second urging member 82 for urging the valve body 81 toward the valve seat 55 is provided in the housing cylinder 31.
According to this configuration, by moving the cartridge 3 from the valve-opened state to the base end side in the axial direction, the pushing protrusion 23 moves in the direction to withdraw from the valve body 81. Then, the valve body 81 is moved to the distal end side in the axial direction by the urging force of the second urging member 82, so that it is seated again on the valve seat surface. Thus, the discharge of the contents can be stopped, so that it is possible to prevent all the contents from flowing out by a single discharge operation. Therefore, for example, the same cartridge 3 can repeatedly discharge the contents from the discharge container 1.

In the present embodiment, the connecting cylinder 22 in which the small-diameter portion 43 of the housing cylinder 31 is closely fitted movably in the axial direction is formed on the syringe body 2.
According to this configuration, while guiding the axial movement of the cartridge 3 with respect to the syringe main body 2, the sealing property between the cartridge 3 and the syringe main body 2 can be ensured, and the contents flowing out of the cartridge 3 can be removed from the syringe main body 2. It can be prevented from leaking into the inside.

  In the present embodiment, since the cartridge 3 is configured to be detachable from the syringe main body 2, it is possible to repeatedly use the discharge container 1 without changing the syringe main body 2 only by replacing the used cartridge 3. it can.

As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to the embodiments, and includes design changes and the like without departing from the gist of the present invention.
For example, in the above-described embodiment, a configuration in which the valve body 81 is urged toward the distal end in the axial direction by the second urging member 82 has been described. However, the second urging member 82 is not provided, and a single-use cartridge may be used. I do not care.
In the above-described embodiment, the configuration in which the cartridge 3 is detachable from the syringe main body 2 has been described. However, the configuration is not limited to this configuration. That is, the cartridge 3 may not be removable from the syringe body 2.
In the embodiment described above, the configuration in which the movement of the cartridge 3 toward the distal end in the axial direction in the valve open state is restricted by the connecting cylinder 22 has been described, but the present invention is not limited to this configuration.

In the above-described embodiment, the configuration in which the housing cylinder 31 is tightly fitted to the connection cylinder 22 has been described. However, the present invention is not limited to this configuration. Any configuration is acceptable.
In the above-described embodiment, the configuration in which the content is discharged through the discharge nozzle 100 mounted on the discharge cylinder 12 has been described. However, the present invention is not limited to this configuration, and the content may be directly passed through the discharge cylinder 12 (without attaching the discharge nozzle 100). An object may be discharged.

4 and 5, the stopper 200 may be removably mounted on the cartridge 3 during distribution. The stopper 200 is formed in a U-shape in plan view. The stopper 200 has an outer holding part 201 and a pair of inner holding parts 202.
The outer holding portion 201 extends in the circumferential direction along the outer peripheral surface of a portion of the large-diameter portion 41 of the storage tube 31 that is located closer to the base end in the axial direction than the sliding tube 72.

  Each of the inner holding portions 202 extends radially inward from both ends of the outer holding portion 201 in the circumferential direction. Each inner holding portion 202 enters the housing cylinder 31 through an insertion hole 210 formed in the large diameter portion 41. Each inner holding portion 202 radially clamps the peripheral wall of the inner plate main body 71 in the housing cylinder 31. Specifically, a regulating groove 211 that is depressed inward in the radial direction is formed on the peripheral wall of the inner plate main body 71. Each inner holding part 202 is housed in the regulating groove 211 in the housing cylinder 31. Thereby, each inner holding part 202 regulates the movement of the inner tray 33 in the axial direction with respect to the storage cylinder 31. In the illustrated example, the tip of each inner holding portion 202 is held in a holding hole 213 formed at a position facing the insertion hole 210 in the housing cylinder 31.

  When the discharge container 1 is used, the stopper 200 is pulled out in the radial direction with the outer holding portion 201 held. Thereby, the regulation of the inner tray 33 by the inner holding part 202 is released.

According to this configuration, in a state where the stopper 200 is mounted, the movement of the inner tray 33 to the distal end side in the axial direction with respect to the storage cylinder 31 is regulated, so that the contents are pushed by the urging force of the first urging member 73. Pressurization can be suppressed. Therefore, in the distribution stage, the storage stage, and the like, it is possible to prevent the contents from unexpectedly leaking from the cartridge 3 through a sealing portion such as between the valve body 81 and the valve seat 55 or between the inner plate 33 and the housing cylinder 31. Can be suppressed.
Further, according to the present embodiment, the contents can be filled from the small-diameter portion 43 side before the first urging member 73 and the bottom tube portion 32 are assembled to the housing tube 31. That is, after the contents are filled, the movement of the inner plate 33 is regulated by the stopper 200, so that when the first urging member 73 or the bottom cylinder part 32 is assembled thereafter, the urging force of the first urging member 73 is used. It is possible to restrict the movement of the inner plate 33 to the tip side in the axial direction. As a result, the filling pressure into the accommodation space C can be reduced as compared with the case where the contents are filled in a state where the first biasing member 73 is assembled, and the filling property can be improved.

6 and 7 includes a stopper main body 301 and an engagement portion 302.
The stopper main body 301 has entered the housing cylinder 31 through the insertion holes 305 and 306 formed in the large diameter portion 41. The insertion holes 305 and 306 are formed in the large diameter portion 41 at positions opposed to each other with the container axis O interposed therebetween so as to penetrate the large diameter portion 41 in the radial direction. However, the insertion holes 305 and 306 may be any shape as long as at least one of the insertion holes penetrates the large-diameter portion 41.

  The stopper main body 301 is formed in a plate shape extending in the radial direction with the axial direction as the thickness direction. The stopper main body 301 is disposed so as to divide the inside of the large-diameter portion 41 in the axial direction with both ends in the radial direction being supported in the respective insertion holes 305 and 306. In the present embodiment, the stopper body 301 is disposed between the inner plate 33 and the first urging member 73 in the large diameter portion 41, and separates the inner plate 33 and the first urging member 73 in the axial direction. Let me. In this case, the first urging member 73 is in contact with the stopper body 301 from the base end side in the axial direction. On the other hand, the peripheral wall portion of the inner plate main body 71 is in contact with the stopper main body 301 from the distal end side in the axial direction.

  In the present embodiment, the first guide column 64 is located closer to the base end in the axial direction than the above-described insertion holes 305 and 306. Further, a contact portion 310 extending toward the base end side in the axial direction is formed at the top of the inner plate main body 71. The contact portion 310 is formed in an X shape in a plan view as viewed from the axial direction. The outer peripheral edge of the contact portion 310 is continuous with the peripheral wall of the inner plate main body 71. In the illustrated example, the contact portion 310 faces the first urging member 73 with the stopper body 301 interposed therebetween.

  The engagement portion 302 protrudes from the portion of the stopper main body 301 located radially outside of the insertion hole 305 toward the distal end in the axial direction. The engagement portion 302 is configured to be able to engage with the opening edge of the insertion hole 305 in the radial direction. However, the engaging portion 302 may protrude in the base end side in the axial direction or in the circumferential direction. Further, the engagement portions may be formed at both ends in the radial direction of the stopper body 301.

  When the discharge container 1 is used, the stopper 300 is pulled out in the radial direction with the part of the stopper body 301 located radially outside the insertion hole 305 being grasped. As a result, the stopper 300 is removed from the cartridge 3. Then, the first urging member 73 is restored toward the distal end side in the axial direction, so that the first urging member 73 contacts the contact portion 310 of the inner tray 33 from the proximal end side in the axial direction. As a result, a state in which the ejection operation is possible is established.

According to this configuration, since the stopper 300 is disposed between the inner plate 33 and the first urging member 73, the first urging member of the inner plate 33 with respect to the storage cylinder 31 in a state where the stopper 300 is mounted. The movement to the tip side in the axial direction by the urging force of 73 is regulated. Thereby, it is possible to prevent the contents from unexpectedly flowing out of the cartridge 3 in the distribution stage.
In particular, according to the above-described configuration, the stopper main body 301 separates the inner plate 33 and the first urging member 73 in the axial direction, so that the first urging member 73 is The urging force does not act on the inner plate 33. Therefore, when filling the contents from the small diameter portion 43 side, the filling property can be improved regardless of before and after the first urging member 73 is assembled.

The stoppers 200 and 300 can be appropriately designed and modified as long as the movement of the inner tray 33 toward the distal end side in the axial direction with respect to the housing cylinder 31 due to the urging force of the first urging member 73 is restricted. .
In addition, in the discharge container 1 according to the present invention, as the content stored in the storage space C, one having a relatively high viscosity (cream, gel, paste, or the like) is suitably used. Such contents include cosmetics, adhesives, dental cement, and the like. However, the contents stored in the storage space C can be appropriately selected.

  As described above, the components in the above-described embodiment can be appropriately replaced with known components without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Discharge container 3 ... Cartridge 11 ... Cover body 22 ... Connection cylinder 23 ... Push-in protrusion 24 ... Discharge hole 33 ... Inner plate 43a ... Pass-through hole 55 ... Valve seat 73 ... 1st urging member 81 ... Valve body 82 ... 2nd Urging member 200, 300 ... stopper

Claims (5)

A storage cylinder in which the content is accommodated, and a passage hole for the content is formed at an axial end portion,
An inner plate fitted into the housing cylinder so as to be movable in the axial direction with respect to the housing cylinder,
A first urging member disposed in the housing cylinder and urging the inner plate toward the distal end in the axial direction;
A valve seat formed at a portion facing the base end side in the axial direction in the housing cylinder is abutted on the base end side in the axial direction so as to be releasable, and establishes communication between the passage hole and the inside of the storage tube. A valve body to shut off;
A cover body having a discharge hole that discharges the contents in communication with the passage hole while the storage cylinder is movably stored in the axial direction,
In the cover body, when the housing cylinder is moved to the distal end side in the axial direction, a push-in protrusion that pushes the valve body toward the base end side in the axial direction through the passage hole is formed. Discharge container characterized.   2. The discharge container according to claim 1, wherein a second biasing member that biases the valve body toward the valve seat is disposed in the housing cylinder. 3.   The cover body is formed with a connection cylinder in which the axial end of the housing cylinder is tightly fitted so as to be movable in the axial direction when the housing cylinder is housed in the cover body. The discharge container according to claim 1 or 2, wherein:   A stopper that restricts movement of the inner plate toward the distal end side in the axial direction with respect to the housing cylinder by the urging force of the first urging member is detachably attached to the housing cylinder. The discharge container according to any one of claims 1 to 3.   5. The cartridge according to claim 1, wherein the housing cylinder, the inner plate, the first biasing member, and the valve body form a cartridge that is detachable from the cover body. 6. The discharge container according to item 1.

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