JP2008296948A - Fluid discharge pump - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fluid discharge pump capable of preventing a fluid from leaking in spite of its simple structure. <P>SOLUTION: The fluid discharge pump 1 is equipped with a resin-made bellows member 6 that has a shape becoming concentrically broad from an flowing-out opening to a flowing-in opening and deforms from an expansion posture of accommodating a comparatively large amount of the fluid in the inside to a shrinkage posture of accommodating a comparatively small amount of the fluid in the inside by being pressed with a nozzle head 2, a flowing-in valve mechanism 4 connected to the flowing-out opening, and a connecting tube 5 that is connected to the nozzle head 2 to form a fluid passage in the inside and has a leakage prevention member at the lower end, the leakage prevention member coming into contact with the upward inner wall of the bellows member 6 via a protrusion to close the flowing-out opening and separating the protrusion to enable the flow of the fluid when the bellows member 6 deforms from the expansion posture to the shrinkage posture. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  This invention is for discharging the fluid stored in the fluid reservoir from the nozzle head by pressing the nozzle head disposed above the fluid container body forming the fluid reservoir in the interior. The present invention relates to a fluid discharge pump.

As such a fluid discharge pump, for example, as described in Patent Document 1, it has a nozzle head for discharging a fluid, a fluid storage portion for storing the fluid, and a bellows-like shape. A resin bellows member that is deformable between an expanded posture in which a relatively large amount of fluid is housed and a contracted posture in which a relatively small amount of fluid is housed; and a flow of the bellows member A fluid discharge pump having an inflow valve mechanism connected to an inlet and an outflow valve mechanism connected to an outlet of a bellows member has been proposed.
JP 2004-052001 A

  The fluid discharge pump described in Patent Document 1 is based on the pressure difference between the inside of the bellows member and the outside of the bellows member with respect to the inflow valve mechanism that occurs when the bellows member is deformed from the contracted posture to the expanded posture. The fluid stored in the storage portion passes through the inflow valve mechanism and flows into the bellows member. For this reason, when a large load is applied to the fluid reservoir, or when the fluid reservoir and the top of the fluid discharge pump are reversed, the fluid flows into the bellows member. As the fluid flows into the bellows member, the fluid flowing in causes the bellows member internal pressure to the outflow valve mechanism to be greater than the pressure outside the bellows member. As a result, there arises a problem that the fluid leaks from the outflow valve mechanism to the outside of the fluid discharge pump.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a fluid discharge pump that can prevent leakage of fluid while having a simple configuration.

  According to the first aspect of the present invention, the fluid stored in the fluid reservoir is obtained by pressing a nozzle head disposed above the fluid container body that forms the fluid reservoir in the interior. In the fluid discharge pump for discharging from the nozzle head, the fluid discharge pump has a concentrically wide shape from the outlet to the inlet, and is pressed by the nozzle head, so that a relatively large amount of the inside A resin bellows member that is deformed from an expanded posture for accommodating a fluid to a reduced posture for accommodating a relatively small amount of fluid therein, an inflow valve mechanism connected to the inlet, and a nozzle head A hollow fluid passage is formed in the interior, and the outlet is closed by contacting the upper inner wall of the bellows member via a convex portion, and a pressing force applied to the nozzle head. A connecting cylinder having a leakage preventing member that moves to a position in which the convex portion is separated from the upper inner wall of the bellows member and allows the fluid to flow when the bellows member is deformed from an expanded posture to a reduced posture by force; It is characterized by providing.

  According to a second aspect of the present invention, in the first aspect of the invention, after the pressing force to the nozzle head is released, the bellows member is moved from the contracted posture to the expanded posture by its own elastic force. And restore.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the nozzle head can be moved at a center thereof so as to cover the bellows member. A guide member for guiding the movement of the nozzle head is provided.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the inflow valve mechanism is formed with an opening for fluid inflow, and is formed in the mouth and neck of the container body. A valve seat member having a screwing portion to be screwed; and a valve member disposed in the vicinity of the opening.

  The invention according to claim 5 is the invention according to claim 4, wherein the valve seat member has a cylindrical shape in which the opening is formed at the bottom, and the valve member includes an annular support portion; It is comprised from the valve member which consists of the valve part which has a shape corresponding to the said opening part, and the some connection part which connects the said support part and a valve part.

  The invention according to claim 6 is the invention according to claim 4, wherein the valve seat member has a substantially inverted conical shape, and a plurality of the openings are formed on the inclined surface of the approximately inverted cone, The valve member includes a flexible valve portion corresponding to a substantially inverted conical shape of the valve seat member, an engaging portion that engages with the opening portion, and loosely fitted in the opening portion, and is engaged with the valve portion. It is comprised from the axial part which connects a stop part.

  According to the first aspect of the present invention, since the inflow valve mechanism connected to the inflow port of the bellows member and the leaking member that closes the outflow port in contact with the upper inner wall of the bellows member are provided. Although the configuration is simple, the fluid can be prevented from leaking, and the fluid discharge pump can be configured more simply.

  According to the invention described in claim 2, since the bellows member is restored from the contracted posture to the expanded posture by its own elastic force, the handling operation for discharging the fluid of the fluid discharge pump is easy. It becomes possible to.

  According to the third aspect of the present invention, since the guide member for guiding the movement of the nozzle head is provided, the nozzle pressing operation can be stably performed even when the bellows member is used.

  According to the fourth aspect of the present invention, since the valve seat member is screwed into the container body with the mouth neck portion, the fluid discharge pump can be made simpler.

  According to the fifth and sixth aspects of the present invention, in the state where the pressing force is not applied to the nozzle head, the inflow port can be reliably closed by the valve member. In addition, the flow rate of the fluid passing therethrough can be arbitrarily changed according to the pressure difference between the inflow side and the outflow side of the fluid in the inflow valve mechanism.

  Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a longitudinal sectional view of a fluid storage container to which a fluid discharge pump 1 according to a first embodiment of the present invention is applied. 2 to 4 are longitudinal sectional views showing the state of use.

  Of these drawings, FIG. 1 shows a state where the fluid discharge pump 1 is left without applying stress, FIG. 2 shows that the pressing portion 11 of the nozzle head 2 is pressed, and the bellows member 6 is reduced from the expanded posture. FIG. 3 shows a state in which the accordion member 6 is changing from the contracted posture to the expanded posture, and FIG. 4 shows a state in which the accordion member is in the initial expanded posture. The state has returned to.

  This fluid storage container is a gel generally referred to as a gel such as a hair gel or a cleansing gel used in the field of beauty, or a creamy product such as a nutritional cream or a massage cream, or a lotion. It is used as a container for cosmetics for storing liquids and the like. In addition, you may use this fluid storage container as containers, such as a general chemical | medical agent, a solvent, or a foodstuff.

  In this specification, a high-viscosity liquid, a semi-fluid, or a gel or cream-like substance obtained by solidifying a sol in a jelly form and a normal liquid are referred to as a fluid. However, the present invention is not limited to the above-described pump for the fluid, but can be applied to a fluid discharge pump for the entire fluid including gas.

  The fluid storage container includes a fluid discharge pump 1 having an inflow valve mechanism 4, a bellows member 6, and a connecting cylinder 5, a nozzle head 2 having a pressing portion 11 and a fluid discharge port 12, a cylinder 15, The container main body 10 which has the piston 16 and forms the fluid storage part 3 in the inside is comprised, and the guide member 8 which guides the movement of the nozzle head 2 is comprised.

  Here, the nozzle head 2 includes a pressing portion 11, a discharge port 12 for discharging a fluid, and a first coupling portion 13 and a second coupling portion 14 for coupling to the bellows member 6.

  The fluid reservoir 3 includes a cylindrical cylinder 15, a piston 16 that moves up and down in the cylinder 15, a bottom lid 18 in which a plurality of vent holes 17 are formed, and a piston 16 that is inscribed in the bottom lid 18. Has a support member 19 that supports the piston 16 when the cylinder is located at the lower limit in the cylinder 15.

  In this fluid storage container, the fluid stored in the fluid storage portion 3 is moved by the action of the fluid discharge pump 1 by pressing the pressing portion 11 in the nozzle head 2 and reciprocating in the vertical direction. The ink is discharged from the discharge port 12 in the nozzle head 2. The piston 16 moves in the cylinder 15 in the direction of the nozzle head 2 as the fluid stored in the fluid reservoir 3 decreases.

  In this specification, the vertical direction in FIGS. 1 to 4 is defined as the vertical direction in the fluid storage container. That is, in the fluid storage container according to the first embodiment of the present invention, the nozzle head 2 side shown in FIG. 1 is the upward direction, and the piston 16 side is the downward direction.

  Further, the guide member 8 is formed with a hole portion 21 in which the nozzle head 2 is movable at the center thereof, and engages with an upper convex portion 20 formed along the outer periphery of the container body 10 so as to cover the bellows member 6. It is a cover member connected in this way. For this reason, while carrying out the movement movement of the nozzle head 2 in the vertical direction stably, the user can easily grip the fluid storage container and prevent the bellows member 6 from being damaged by an external impact. it can.

  FIG. 5 is an explanatory view showing the bellows member 6 in the fluid discharge pump 1. 5A is a plan view of the bellows member 6, FIG. 5B is a cross-sectional view thereof, and FIG. 5C is a front view thereof.

  The bellows member 6 includes a bellows portion 601 formed by molding a resin having a predetermined elastic force into a bellows shape, and a cover portion that is formed below the bellows portion 601 and includes a coupling portion 602 that is coupled to the inflow valve mechanism 4. 603. Further, the bellows member 6 has a bellows portion 601 formed at its upper portion with a cylinder portion 510 for fixing a connecting cylinder 5 described in detail later, and a flange 512 connected to the first coupling portion 13 in the nozzle head 2. In addition, the bellows part 601, the cover part 603, the cylinder part 510, and the flange 512 which comprise this bellows member 6 may be formed integrally. By integrating these members, it is possible to reduce the assembly burden and reduce the manufacturing cost.

  The bellows portion 601 is formed by, for example, blow molding or injection molding. For this reason, the bellows member 6 has an extended posture in which a relatively large amount of fluid is accommodated as shown in FIG. 1, and a relatively small amount of fluid in the interior as shown in FIG. It is possible to deform between the reduced posture.

  Next, the configuration of the inflow valve mechanism 4 will be described. The inflow valve mechanism 4 includes a valve seat member 410 and a valve member 420. FIG. 6 is an explanatory view showing a valve seat member 410 constituting the inflow valve mechanism 4 in the fluid discharge pump 1. FIG. 7 is an explanatory view showing a valve member 420 constituting the inflow valve mechanism 4 in the fluid discharge pump 1. 6A is a plan view of the valve seat member 410, FIG. 6B is a side cross-sectional view of the valve seat member 410, FIG. 7A is a side view of the valve member 420, and FIG. A side cross section of the member 420, FIG.

  The inflow valve mechanism 4 allows passage of the fluid from the fluid reservoir 3 into the bellows member 6 and prevents backflow of the fluid from the bellows member 6 to the fluid reservoir 3. is there.

  As shown in FIG. 6, the valve seat member 410 has a substantially cylindrical valve seat portion 411 having a circular opening 412 formed at the bottom thereof, and a threaded portion that is screwed into the mouth neck portion 9 of the container body 10. 413. Further, the valve seat member 410 is provided with a first engagement portion 414 for engaging with the valve member 420 and a second engagement portion 415 for engaging with the engagement portion 602 of the bellows member 6. It is done.

  As shown in FIG. 7, the valve member 420 includes an annular support portion 421 disposed inside the valve seat member 410, a valve portion 422 having a shape corresponding to the opening 412 of the valve seat member 410, and a support portion. Four flexible connection parts 423 that connect the valve part 421 and the valve part 422 and a reinforcement part 425 for reinforcing the support part 421 are provided. An engagement portion 426 for engaging with the first engagement portion 414 of the valve seat member 410 is provided on the outer peripheral surface of the support portion 421. Each of the four connecting portions 423 has a pair of bent portions 424. In the valve member 420, due to the flexibility of the four connecting portions 423, the valve portion 422 is between a closed position where the opening 412 in the valve seat member 410 is closed and an open position where the opening 412 is opened. It is configured to be movable.

  The valve member 420 is inserted into the valve seat member 410, and the first engagement portion 414 of the valve member 420 and the engagement portion 426 of the valve seat member 410 are fitted to each other, so that the valve member 420 is It is fixed to the seat member 410. The valve seat member 410 and the valve member 420 are made of a material using, for example, a resin such as polyethylene or polypropylene, a synthetic rubber such as silicon rubber, or a mixture thereof.

  In the inflow valve mechanism 4 having such a configuration, as shown in FIG. 3, when the inside of the bellows member 6 is decompressed, the valve portion 422 in the valve member 420 is separated from the opening 412 in the valve seat member 410. Then, the opening 412 is moved to an open position. As a result, the fluid stored in the fluid storage unit 3 passes through the opening 412. On the other hand, when the inside of the bellows member 6 is not depressurized, the valve portion 422 of the valve member 420 is opened to the opening portion of the valve seat member 410 due to the flexibility of the four connecting portions 423 as shown in FIG. Move to the closed position to close 412.

  In the inflow valve mechanism 4, the support portion 421 and the valve portion 422 in the valve member 420 are connected by four connecting portions 423 as shown in FIG. For this reason, it is possible to prevent the occurrence of an inappropriate inclination generated in the valve portion 422. In order to effectively prevent the occurrence of an inappropriate inclination generated in the valve portion 422, the number of the connecting portions 423 is preferably three or more, and more preferably they are arranged equally.

  In the inflow valve mechanism 4, the connecting portion 423 is surrounded by the reinforcing portion 425. Therefore, when the valve portion 422 is moved from the closed position to the open position and the valve portion 422 is tilted inappropriately, the connecting portion 423 comes into contact with the reinforcing portion 425. Therefore, the valve part 422 does not incline further.

  Further, in the inflow valve mechanism 4, the four connecting portions 423 that connect the support portion 421 and the valve portion 422 each have a pair of bent portions 424. For this reason, each connection part 423 has appropriate elasticity, and it becomes possible for the valve part 422 to reciprocate smoothly between the closed position and the open position. In addition, it is preferable that the thickness of this connection part 423 shall be 1 mm or less, and it is more preferable to set it as 0.3 mm thru | or 0.5 mm.

  With the configuration of the inflow valve mechanism 4 as described above, in the fluid discharge pump 1 according to this embodiment, the backflow of the fluid can be reliably prevented while having a simple configuration, and the inflow valve mechanism 4, the flow rate of the fluid passing therethrough can be arbitrarily changed according to the pressure difference between the fluid inflow side and the outflow side.

  Next, the configuration of the connecting cylinder 5 will be described. 8A is a plan view of the connecting cylinder 5, FIG. 8B is a sectional view thereof, and FIG. 8C is a bottom view thereof.

  As shown in FIG. 8, the connecting cylinder 5 in the fluid discharge pump 1 according to the present invention has a fluid passage 155 formed therein, and the outer peripheral surface of the connecting cylinder 5 is fitted with the cylinder portion 510 of the bellows member 6. It is comprised from the cylinder part 151 in which the convex part 154 was formed, and the leak prevention member 152 arrange | positioned in the lower end part of the cylinder part 151. FIG. An inflow port 156 for allowing the fluid to flow into the fluid passage 155 is formed near the lower end of the cylindrical portion 151 and in the vicinity of the connection portion of the leakage preventing member 152.

  A cylindrical portion 151 in the connecting cylinder 5 is connected to a cylindrical portion 510 in the bellows member 6 via a convex portion 154 formed on the outer peripheral surface thereof, and a second coupling portion in which the upper portion is formed in a cylindrical shape in the nozzle head 2. 14 is fixed inside. Thereby, the moving path of the fluid from the bellows member 6 to the discharge port 12 in the nozzle head 2 is communicated.

  The leakage preventing member 152 has a shape in which an inclined surface corresponding to the inclined surface of the upper inner wall of the bellows portion 601 of the bellows member 601 in the expanded posture is provided on the upper portion in a state where no pressing force is applied to the nozzle head 2. And is arranged to be movable in the bellows portion 601 in conjunction with the pressing operation to the nozzle head 2. A convex portion 153 that abuts the upper inner wall surface of the bellows portion 601 is formed on the surface of the leak preventing member 152 corresponding to the upper inner wall surface of the bellows portion 601. The leakage preventing member 152 abuts the upper inner wall of the bellows portion 601 via the convex portion 153, thereby closing the inflow port 156 in the connecting cylinder 5 and preventing the fluid from leaking out of the container.

  In such a leakage prevention member 152, when the pressing portion 11 in the nozzle head 2 is pressed, the convex portion 153 is formed in the bellows portion 601 when the bellows member 6 is deformed from the expanded posture to the reduced posture as shown in FIG. Separated from the inner wall of the top. Thereby, the fluid can be distributed to the fluid passage 155 in the connecting cylinder 5.

  Next, the discharge operation of the fluid in the fluid storage container having the above-described configuration will be described with reference to FIGS. 2 to 4 again.

  First, as shown in FIG. 2, when the pressing portion 11 in the nozzle head 2 is pressed, the bellows member 6 is deformed to a reduced posture. At this time, the inclined shape of the upper inner wall surface of the bellows portion 601 changes to a horizontal shape in the sectional view, and the convex portion 153 formed on the leakage closing member 152 is the upper inner wall surface of the bellows portion 601 in the bellows member 6. Separate from. And a fluid is discharged from the discharge port 12 in the nozzle head 2, and the volume of the fluid which can be accommodated in the bellows member 6 decreases.

  Thereafter, when the pressure on the pressing portion 11 of the nozzle head 2 is released, the bellows member 6 is deformed to the expanded posture by the elastic force of the bellows member 6 as shown in FIG. When the inside of the bellows member 6 is depressurized along with this deformation, the valve portion 422 in the inflow valve mechanism 4 is separated from the opening 412 so that the fluid can flow into the bellows member 6. And a fluid flows in into the bellows member 6 from the fluid storage part 3 until the shape of the bellows member 6 becomes an extended posture before pressing.

  As described above, when the fluid is discharged, the fluid stored in the fluid reservoir 3 decreases, so that the piston 6 fitted to the container body 10 is matched with the volume of the fluid stored. To rise. As a result, the fluid always exists around the inflow valve mechanism 4 in the fluid reservoir 3.

  Further, when the shape of the bellows member 6 returns to the state before applying stress to the pressing portion 11 in the nozzle head 2, as shown in FIG. 4, the convex portion 153 of the leakage preventing member 152 and the upper inner wall surface of the bellows portion 601. And closely. As a result, the fluid stored in the space in the bellows member 6 partitioned between the valve seat member 420 and the leakage prevention member 152 passes through the leakage prevention member 152 to the outside of the container from the discharge port 12 in the nozzle head 2. There is no leakage.

  In this embodiment, the leakage preventing member 152 is provided with the convex portion 153 as shown in FIG. 8, but the convex portion 153 may be omitted. In this case, the discharge port 12 of the nozzle head 2 is brought into close contact with the upper inner wall of the bellows portion 601 by bringing an inclined surface corresponding to the inclined surface of the upper inner wall of the bellows portion 601 in the expanded posture of the leakage preventing member. It becomes the structure which closes the outflow port in the bellows member 6 which goes to. Further, by forming about 2 to 3 convex portions 153 and having the tips of the convex portions 153 abut on the upper inner wall surface of the bellows member 6 in a linear manner, it is possible to enhance the fluid leakage prevention effect. Good. In addition, as the cross-sectional shape of the convex portion 153, various shapes and sizes such as a substantially circular shape and a polygonal shape can be applied depending on the properties of the fluid.

  Next, 2nd Embodiment of this invention is described based on drawing.

  FIG. 9 is a longitudinal sectional view of a fluid storage container to which the fluid discharge pump 100 according to the second embodiment of the present invention is applied. 10 to 12 are enlarged views showing the state of use. In addition, about the member same as 1st Embodiment, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  Of these drawings, FIG. 9 shows a state in which the fluid discharge pump 100 is left without applying stress, and FIG. 10 shows that the pressing portion 11 of the nozzle head 2 is pressed, and the bellows member 6 is changed from the expanded posture to the reduced posture. FIG. 11 shows the state where the pressing portion 11 of the nozzle head 2 is released, FIG. 11 shows the state where the bellows member 6 is changing from the reduced posture to the extended posture, and FIG. 12 shows the bellows member 6 being in the initial extended posture. It shows the returned state.

  As shown in FIG. 9, the fluid discharge pump 100 according to the second embodiment employs an inflow valve mechanism 400 while the fluid discharge pump 1 according to the first embodiment includes the inflow valve mechanism 4. It is different in point.

  FIG. 13 is an explanatory view showing the valve seat member 430 constituting the inflow valve mechanism 400 according to the second embodiment of the present invention, and FIG. 14 is an explanatory view showing the valve member 450 constituting the inflow valve mechanism 400.

  Of these drawings, FIG. 13 (a) is a plan view of the valve seat member 430, FIG. 13 (b) is a cross-sectional view thereof, and FIG. 13 (c) is circled by a dashed line in FIG. 13 (b). It is an enlarged view which expands and shows a part. 14A is a plan view of the valve member 450, FIG. 14B is a sectional view thereof, and FIG. 14C is a bottom view thereof.

  As shown in FIG. 13, the valve seat member 430 includes a substantially conical valve seat portion 441 in which a circular hole portion 432 for locking the valve member 450 is formed at the bottom thereof, and a mouth and neck in the container body 10. It has the screwing part 433 screwed to the part 9 and the engaging part 436 for engaging with the bellows member 6. In the valve seat portion 441, three inflow ports 431 are formed at equal intervals around the hole 432 so as to allow fluid to flow between the fluid reservoir 3 and the inside of the bellows member 6. . Note that it is preferable to form about 1 to 4 inflow ports 431 depending on the shape and size of the holes.

  Further, in this embodiment, as shown in FIG. 13C, the valve seat portion 441 of the valve seat member 430 is provided with a contact convex portion 442 that linearly contacts a valve portion 451 of the valve member 450 described later. It is formed. The contact convex portion 442 is for enhancing the effect of closing the valve member 450, but may be omitted as long as it is difficult to leak as a property of the fluid.

  As shown in FIG. 14, the valve member 450 has a valve portion 451 having a shape corresponding to the wall surface of the substantially conical valve seat portion 441 in the valve seat member 430, and a valve member 450 in the hole portion 432 in the valve seat member 430. And a connecting portion 453 for connecting the valve portion 451 and the locking portion 452 to each other.

  The valve portion 451 in the inflow valve mechanism 400 is formed by thinly molding a flexible resin so as to be deformable. For this reason, when the fluid stored in the fluid reservoir 3 flows into the bellows member 6, the valve portion 451 is deformed and separated from the wall surface of the valve seat 441 in the valve seat member 430. The inlet 431 formed in 441 is opened. Thereby, the fluid can flow into the bellows member 6 from the fluid reservoir 3.

  The fluid discharge operation in the fluid storage container to which the fluid discharge pump 100 including the inflow valve mechanism 400 having the above-described configuration is applied will be described with reference to FIGS. 9 to 12 again.

  First, as shown in FIG. 10, when the pressing portion 11 in the nozzle head 2 is pressed, the bellows member 6 is deformed to a reduced posture, and the volume of the fluid that can be accommodated in the bellows member 6 is reduced. An amount of fluid corresponding to the reduced amount is discharged from the discharge port 12 of the nozzle head 2.

  Thereafter, when the pressure on the pressing portion 11 of the nozzle head 2 is released, the bellows member 6 is deformed to the expanded posture by the elastic force of the bellows member 6 as shown in FIG. By this deformation, the volume of the fluid that can be stored in the bellows member 6 increases. Thereby, the inside of the bellows member 6 is decompressed and the inflow valve mechanism 400 is opened. When the inflow valve mechanism 400 is opened, the fluid stored in the fluid storage unit 3 passes through the inflow valve mechanism 400 and flows into the bellows member 6. By the inflow of the fluid into the bellows member 6, the fluid stored in the fluid reservoir 3 is reduced, and the inside of the fluid reservoir 3 is decompressed. For this reason, the piston 16 moves in the container body 10 toward the fluid discharge pump 100, and the volume of the fluid reservoir 3 is reduced by the amount of fluid discharged. In the container body 10, air is taken into the space below the piston 16 from the outside through the vent hole 17, and deformation of the container due to pressure change is prevented.

  Further, when the bellows member 6 is further deformed and returned to the initial state, the convex portion 153 of the leakage preventing member 152 comes into close contact with the upper inner wall surface of the bellows portion 601. As a result, the fluid stored in the space partitioned between the valve seat member 420 and the leakage prevention member 152 does not leak from the discharge port 12 in the nozzle head 2.

  FIG. 15 is a longitudinal sectional view of a fluid storage container to which a fluid discharge pump 200 according to a third embodiment of the present invention is applied.

  As shown in FIG. 15, in the fluid storage container to which the fluid discharge pump 200 is applied, when the fluid is discharged to the outside of the container, the piston 216 is placed in the container main body 210 from the fluid discharge pump 1 side. It differs from the fluid storage container described above in that it descends toward the bottom of the main body 710.

  For this reason, this fluid storage container includes a pipe member 730 for communicating the fluid from the bottom of the container body 710 to the fluid discharge pump 1, and the pipe member 730 is slid on the piston 216 at the center of the piston 216. A hole for fitting is formed so as not to hinder. The piston 216 includes a pair of substantially bowl-shaped elastic portions 221, which are in liquid-tight contact with the inner wall surface of the cylindrical cylinder 215 of the container body 210 at the tip contact portion 222 of each elastic portion 221.

  In this fluid storage container, after the container body 210 is filled with the fluid, a piston 216 having an outer periphery substantially the same diameter as the inner diameter of the container body 210 is hermetically loaded into the container body 210 filled with the fluid. The upper part of the fluid storage container 210 main body is opened to the same diameter as the cylinder diameter of the container. Therefore, in the fluid discharge pump 200, the valve seat member is integrally formed with a lid portion 462 having a shape corresponding to the cylinder diameter of the container body 710 and a valve seat portion 461 in which the valve member 420 is disposed. A valve seat member 460 including an air inlet 463 and a pipe member connecting portion 464 for preventing deformation accompanying body discharge is employed. In addition, the lid 462 and the valve seat 461 are integrally molded in this manner, thereby reducing the number of parts. The fluid discharge pump 200 is connected to the container body 210 by fitting the lid 462 and the container body 710 to complete the fluid storage container.

  FIG. 16 is a longitudinal sectional view of another fluid storage container to which the fluid discharge pump 1 according to the first embodiment of the present invention is applied.

  Similar to the fluid storage container to which the fluid discharge pump 200 according to the third embodiment of the present invention described above is applied, this fluid storage container includes a piston 716 in the container body 710, and the fluid is outside the container. When discharged, the piston 716 descends from the fluid discharge pump 1 side toward the bottom of the container body 710 in the container body 710. The piston 716 loaded in the container main body 710 may be a piston 216 loaded in the container main body 210 of the fluid storage container to which the fluid discharge pump 200 according to the third embodiment of the present invention is applied. A variety of pistons can be employed and is not limited to this embodiment.

  In addition, the fluid container has a shape corresponding to the neck portion 709 of the fluid discharge pump 1 to be screwed with the screw lid 413 and the cylinder diameter of the container body 710 so that the fluid discharge pump 1 can be applied. A lid member 720 formed integrally with the lid member 720 is employed. Then, after the lid member 720 is connected to the fluid discharge pump 1 by screwing, the lid member 720 is fitted to the container main body 710 to complete the fluid storage container.

  In addition, in this fluid storage container, since it is necessary to connect the pipe member 730 to the inlet 412 of the valve seat member 420, the valve seat member 420 is modified to form the pipe member connection portion 764. It is also possible to apply the fluid discharge pump 1 as it is, for example, by providing a pipe member connecting portion on the member 730.

  As described above, the fluid discharge pump 1 according to the first embodiment is configured to be a fluid storage container, and does not depend on the shape of the container main body or the piston fitted to the container main body and is discharged. The present invention can be applied to any type of fluid storage container in which the body is supplied into the fluid discharge pump 1 from the upper part or the lower part of the fluid storage part 3 in the container body.

  Furthermore, the fluid discharge pump 1 according to the first embodiment is provided, for example, at the air inlet into the container body as described in JP-A-2005-218946 in the lid member 720 shown in FIG. The present invention is also applicable to a general fluid storage container that includes an inflow valve mechanism in which a valve member is disposed and does not include a piston inside the container body.

It is a longitudinal cross-sectional view of the fluid storage container to which the fluid discharge pump 1 which concerns on 1st Embodiment of this invention is applied. It is an enlarged view which shows the principal part of the fluid storage container to which the fluid discharge pump 1 which concerns on 1st Embodiment of this invention is applied. It is an enlarged view which shows the principal part of the fluid storage container to which the fluid discharge pump 1 which concerns on 1st Embodiment of this invention is applied. It is an enlarged view which shows the principal part of the fluid storage container to which the fluid discharge pump 1 which concerns on 1st Embodiment of this invention is applied. It is explanatory drawing which shows the bellows member 6 in the fluid discharge pump 1. FIG. It is explanatory drawing which shows the valve seat member 410 which comprises the inflow valve mechanism 4 in the fluid discharge pump 1. FIG. It is explanatory drawing which shows the valve member 420 which comprises the inflow valve mechanism 4 in the fluid discharge pump 1. FIG. It is explanatory drawing which shows the connection pipe | tube 5 in the fluid discharge pump 1. FIG. It is a longitudinal cross-sectional view of the fluid storage container to which the fluid discharge pump 100 which concerns on 2nd Embodiment of this invention is applied. It is an enlarged view which shows the principal part of the fluid storage container to which the fluid discharge pump 100 which concerns on 2nd Embodiment of this invention is applied. It is an enlarged view which shows the principal part of the fluid storage container to which the fluid discharge pump 100 which concerns on 2nd Embodiment of this invention is applied. It is an enlarged view which shows the principal part of the fluid storage container to which the fluid discharge pump 100 which concerns on 2nd Embodiment of this invention is applied. It is explanatory drawing which shows the valve seat member 430 which comprises the inflow valve mechanism 400 in the fluid discharge pump 100. FIG. It is explanatory drawing which shows the valve member 450 which comprises the inflow valve mechanism 400 in the fluid discharge pump 100. FIG. It is a longitudinal cross-sectional view of the fluid storage container to which the fluid discharge pump 200 which concerns on 3rd Embodiment of this invention is applied. It is a longitudinal cross-sectional view of the other fluid storage container to which the fluid discharge pump 1 which concerns on 1st Embodiment of this invention is applied.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fluid discharge pump 2 Nozzle head 3 Fluid storage part 4 Inflow valve mechanism 5 Connecting cylinder 6 Bellows member 8 Guide member 9 Mouth neck part 10 Container body 11 Press part 12 Discharge port 13 1st coupling part 14 2nd coupling part 15 Cylinder 16 Piston 17 Ventilation hole 18 Bottom cover 19 Support member 100 Fluid discharge pump 151 Tube portion 152 Leakage prevention member 153 Convex portion 154 Convex portion 155 Fluid flow passage 200 Fluid discharge pump 210 Container body 216 Piston 400 Inlet valve mechanism 410 Valve seat member 411 Valve seat portion 412 Opening portion 413 Screwing portion 414 First engagement portion 415 Second engagement portion 420 Valve member 421 Support portion 422 Valve portion 423 Connection portion 424 Bending portion 426 Engagement portion 427 Guide portion 430 Valve Seat member 431 Valve seat portion 432 Opening portion 433 Screwing portion 434 First engagement portion 436 Second engagement Portion 450 Valve member 451 Valve portion 452 Connection portion 453 Connection portion 460 Valve seat member 461 Valve seat portion 462 Lid portion 463 Air inflow port 464 Tube member connection portion 501 Valve seat member 502 Valve member 512 Flange 601 Bellows portion 602 Connection portion 710 Container Body 716 Piston 720 Lid member 730 Pipe member

Claims (6)

A flow for discharging the fluid stored in the fluid reservoir from the nozzle head by pressing the nozzle head disposed above the fluid container body forming the fluid reservoir in the interior. In body discharge pump,
It has a concentrically wide shape from the outflow port to the inflow port, and is pressed by the nozzle head, so that a relatively large amount of fluid is accommodated in the inside, and the inside is relatively A resin bellows member that is deformed into a reduced posture to store a small amount of fluid; and
An inflow valve mechanism connected to the inflow port;
It is connected to the nozzle head, forms a hollow fluid passage inside thereof, closes the outlet by contacting the upper inner wall of the bellows member via a convex portion, and is applied to the nozzle head. When the bellows member is deformed from the expanded position to the contracted position by the pressing force, the connecting cylinder has a leakage preventing member that moves away from the upper inner wall of the bellows member to a position where the fluid can flow. When,
A fluid discharge pump comprising: The fluid discharge pump according to claim 1,
The fluid discharge pump in which the bellows member is restored from the contracted posture to the extended posture by its own elastic force after the pressing force to the nozzle head is released. In the fluid discharge pump according to claim 1 or 2,
A fluid discharge pump comprising a guide member for guiding movement of the nozzle head by having a hole portion in the center of which the nozzle head can be moved and arranged so as to cover the bellows member. In the fluid discharge pump according to any one of claims 1 to 3,
The inflow valve mechanism is
An opening for fluid inflow, and a valve seat member having a threaded portion that is threadedly engaged with the neck of the container body;
A valve member disposed in the vicinity of the opening;
A fluid discharge pump comprising: In the fluid discharge pump according to claim 4,
The valve seat member has a cylindrical shape with the opening formed at the bottom,
The valve member includes an annular support portion, a valve portion having a shape corresponding to the opening, and a valve member including a plurality of connecting portions that connect the support portion and the valve portion,
Fluid discharge pump composed of In the fluid discharge pump according to claim 4,
The valve seat member has a substantially inverted conical shape, and a plurality of the openings are formed on the inclined surface of the approximately inverted cone.
The valve member includes a flexible valve portion corresponding to a substantially inverted conical shape of the valve seat member, a locking portion that is locked to the opening portion, and a loosely fitted fitting in the opening portion. A shaft portion connecting the locking portion;
Fluid discharge pump composed of