JP4208656B2 - Fluid discharge pump - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fluid discharge pump for discharging a fluid stored in the fluid reservoir from the nozzle head by pressing a nozzle head disposed above the fluid reservoir.
[0002]
[Prior art]
As such a fluid discharge pump, for example, as described in Patent Document 1, a nozzle head for discharging a fluid, a fluid reservoir for storing a fluid, and an upper portion of the fluid reservoir A cylinder disposed in the cylinder, a piston capable of reciprocating in the cylinder by pressing the nozzle head, and a fluid stored in the fluid reservoir for flowing into the cylinder as the piston moves up A mechanism provided with an inflow valve mechanism and an outflow valve mechanism for causing the fluid flowing into the cylinder to flow out to the nozzle head as the piston descends is used.
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2001-213465
[Problems to be solved by the invention]
However, the fluid pump described in Patent Literature 1 may leak the fluid once flowing into the nozzle head even after the pressure on the nozzle head is released. Such a phenomenon becomes a problem particularly when a resin valve mechanism is used to reduce the cost of the fluid discharge pump.
[0005]
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a fluid discharge pump that completely prevents leakage of fluid to the outside of the container.
[0006]
[Means for Solving the Problems]
The invention according to claim 1 is a fluid for discharging the fluid stored in the fluid reservoir from the nozzle head by pressing a nozzle head disposed above the fluid reservoir. The discharge pump has an inlet and an outlet, and is pressed by the nozzle head so that a relatively small amount of fluid is accommodated therein from an expanded posture in which a relatively large amount of fluid is accommodated therein. A resin bellows member that is deformed into a retracted posture, a resin inflow valve mechanism that is connected to the inlet of the bellows member, and an outlet of the bellows member that is relative to the nozzle head. A resin outflow valve mechanism movable to the nozzle head, a first support portion connected to the nozzle head, a second support portion connected to the outflow valve mechanism, and a bent portion to form the first Support portion and second support A tubular member having a tubular connecting part that connects the parts in a state of being biased in a direction away from each other, a coupling part having one end connected to the nozzle head and inserted through a bent part of the tubular member, An abutting member formed on the other end of the coupling portion and having a lid portion that abuts on the surface of the bent portion of the connecting portion of the tubular member, and the nozzle head descends with respect to the outflow valve mechanism Thus, the bent portion of the tubular member and the lid portion of the contact member are separated from each other to form a fluid flow path.
[0007]
According to a second aspect of the present invention, in the fluid discharge pump according to the first aspect, the inflow valve mechanism includes a valve seat member formed with a fluid inflow opening, an annular support portion, and the support. And a valve member having a valve portion connected via a plurality of connecting portions, and the outflow valve mechanism includes a valve seat member in which an opening for fluid outflow is formed, and an annular support portion And a valve member having the support portion and a valve portion connected via a plurality of connecting portions.
[0008]
According to a third aspect of the present invention, in the fluid discharge pump according to the first or second aspect, the nozzle head includes a stopper that limits a relative movement amount of the outflow valve mechanism.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 3 are longitudinal sectional views showing a fluid container to which a fluid discharge pump 10 according to a first embodiment of the present invention is applied. 1 shows a state in which the nozzle head 20 is left unstressed, FIG. 2 shows a state in which the nozzle head 20 is pressed, and FIG. 3 shows a state in which the pressure on the nozzle head 20 is released. Yes.
[0010]
This fluid container is a gel (gel) generally called a gel such as a hair gel or a cleansing gel used in the field of beauty, a cream-like product such as a nutritional cream or a massage cream, or a lotion. It is used as a cosmetic container for storing liquid or the like. In addition, you may use this fluid 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.
[0011]
The fluid container includes a fluid discharge pump 10 according to the present invention, a nozzle head 20, an outer lid 30, and a fluid reservoir 40 that stores fluid in the interior thereof.
[0012]
In this specification, the vertical direction in FIGS. 1 and 2 is defined as the vertical direction in the fluid container. That is, in the fluid container according to the present invention, the nozzle head 20 side shown in FIG. 1 is the upward direction, and the piston member 42 side is the downward direction.
[0013]
The nozzle head 20 includes a discharge portion 21 for discharging the fluid, a pressing portion 22 that is pressed when the fluid is discharged, a sliding region 23 that is slidably engaged with the outflow valve seat member 121, It has a coupling part 24 and a fixed part 25.
[0014]
Here, the outflow valve seat member 121 constitutes the outflow valve mechanism 12 described in detail later. The coupling portion 24 is for coupling with a tubular member 131 in the leakage prevention mechanism 13 described in detail later, and the fixed portion 25 is for fixing the contact member 132 in the leakage prevention mechanism 13. It is.
[0015]
An upper limit stopper 23a for restricting the upper limit of the relative movement of the outflow valve mechanism 12 with respect to the nozzle head 20 is provided at the upper limit of the sliding area 23, and an outflow with respect to the nozzle head 20 is provided at the lower limit of the sliding area 23. A lower limit stopper 23b for restricting the lower limit of the relative movement of the valve mechanism 12 is formed. Thereby, as will be described in detail later, an appropriate pressing force can be applied to the bellows member 16, and even when the urging force of the tubular member 131 is large, the nozzle head 20 and the outflow valve mechanism 12. Can be stopped at an appropriate position.
[0016]
The outer lid 30 is engaged with a screw portion formed at the upper end of the fluid reservoir 40 via a screw member.
[0017]
The fluid reservoir 40 includes a cylindrical cylinder member 41, a piston member 42 that moves in the cylinder member 41 in the vertical direction, an inner lid 43 in which a plurality of vent holes 43 a are formed, and an outer lid 44. Have. The cylinder member 41 and the fluid discharge pump 10 in the fluid reservoir 40 are connected in a liquid-tight state via the packing 17. Note that the packing 17 may be omitted when the inflow valve mechanism 11 connected to the cylinder member of the fluid discharge pump 10 has sufficient elasticity.
[0018]
The outer lid 44 is fitted to the lower part of the cylinder member 41 with the inner lid 43 sandwiched therebetween. The inner lid 43 is formed with a bottom upper portion 43b for positioning the lowest position of the piston member 42 in the fluid container. By changing the height of the bottom upper portion 43b, the amount of fluid that can be stored in the fluid container can be changed.
[0019]
A hole 44 a is formed in the central portion of the outer lid 44. For this reason, air can flow between the outside of the fluid container and the vent hole 43 a of the inner lid 43.
[0020]
As shown in FIGS. 1 to 3, in this fluid container, the fluid discharge pump 10, which will be described in detail later, is operated by pressing the pressing portion 22 in the nozzle head 20 and reciprocating in the vertical direction. The fluid stored in the fluid storage unit 40 is discharged from the discharge unit 21 in the nozzle head 20. As the fluid in the fluid reservoir 40 decreases, the piston member 42 moves in the cylinder member 41 toward the nozzle head 20.
[0021]
Next, the configuration of the fluid discharge pump 10 according to the first embodiment of the present invention will be described.
[0022]
The fluid discharge pump 10 includes a resin bellows member 16 having an inlet 16a and an outlet 16b (see FIG. 9), a resin inlet valve mechanism 11 fixed to the inlet 16a of the bellows member 16, A resin outflow valve mechanism 12 fixed to the outlet 16b of the bellows member 16 and a leak prevention mechanism 13 that opens only when the nozzle head 20 is pressed are provided.
[0023]
The inflow valve mechanism 11 is for causing the fluid stored in the fluid storage section 40 to flow into the fluid discharge pump 10 along with the expansion operation of the bellows member 16, and the outflow valve mechanism 12 The fluid that has flowed into the fluid discharge pump 10 is caused to flow out to the nozzle head 20 as the bellows member 16 is reduced. The leak prevention mechanism 13 is for opening the space between the fluid discharge pump 10 and the nozzle head 20 only when the pressing portion 22 of the nozzle head 20 is pressed.
[0024]
4A is a plan view showing an outflow valve seat member 111 constituting the inflow valve mechanism 11 in the fluid discharge pump 10, and FIG. 4B is a cross-sectional view showing a cross section taken along the line AA of FIG. 4A. FIG. 4C is a rear view thereof. FIG. 5A is a plan view showing an inflow valve seat member 112 constituting the inflow valve mechanism 11 in the fluid discharge pump 10, and FIG. 5B is a cross-sectional view showing the AA cross section of FIG. FIG. 5C is a rear view thereof.
[0025]
As shown in FIG. 4, the inflow valve seat member 111 includes an opening 111 a for allowing the fluid in the fluid reservoir 40 to flow in, and a coupling portion 111 b that is coupled to an inflow valve member 112 described later.
[0026]
As shown in FIG. 5, the inflow valve member 112 includes a valve body 112 a having a shape corresponding to the opening 111 a of the inflow valve seat member 111, a support portion 112 b that fixes the coupling portion 111 b of the inflow valve seat member 111, Four connection parts 112c which connect the valve body 112a and the support part 112b are provided. The four connecting portions 112c each have a pair of bent portions 112d, thereby providing more suitable flexibility.
[0027]
FIG. 6 is an explanatory view showing the outflow valve member 122 and the outflow valve seat member 121 that constitute the outflow valve mechanism 12 in the fluid discharge pump 10. 6A shows a state in which the outflow valve member 122 is viewed in plan, and FIG. 6B shows a state in which the outflow valve member 122 and the outflow valve seat member 121 are assembled. Moreover, in FIG.6 (b), the outflow valve member 122 has shown the side surface, and the outflow valve seat member 121 has shown the cross section.
[0028]
As shown in FIG. 6, the outflow valve seat member 121 has a circular opening 121a that functions as a valve seat at the bottom, a pair of protrusions 121b above the inner surface, and the movement of the nozzle head 20 above the outer surface. A convex guide part 121c for guiding is provided. Furthermore, a coupling portion 121d for coupling to a tubular member 131 that constitutes the leakage prevention mechanism 13, which will be described in detail later, is formed on the upper portion of the outflow valve mechanism 121.
[0029]
On the other hand, the outflow valve member 122 includes a valve body 122a having a shape corresponding to the circular opening 121a in the outflow valve seat member 121, an annular support portion 122b disposed inside the outflow valve seat member 121, and a support portion. It has four connection parts 122c which connect 122b and valve body 122a. Each of the four connecting portions 122c has a pair of bent portions 122d. In this outflow valve member 122, due to the flexibility of the four connecting portions 122c, the valve body 122a opens the closed position where the valve body 122a closes the opening 121a in the outflow valve seat member 121 and the opening 121a. It is configured to be able to move between the open positions.
[0030]
A pair of recesses 122e is formed on the outer peripheral surface of the support portion 122b in the outflow valve member 122. Therefore, when the outflow valve member 122 is inserted into the outflow valve seat member 121, the pair of convex portions 121b in the outflow valve seat member 121 and the pair of concave portions 122e in the outflow valve member 122 engage with each other, The outflow valve member 122 is fixed in the outflow valve seat member 121.
[0031]
FIG. 7A is a plan view showing a tubular member 131 constituting the leakage prevention mechanism 13 applied to the fluid container according to the first embodiment of the present invention, and FIG. 7 (c) is a side sectional view thereof. FIG. 8A is a plan view showing a contact member 132 constituting the leakage prevention mechanism 13 applied to the fluid container according to the first embodiment of the present invention, and FIG. FIG.
[0032]
As shown in FIG. 7, the tubular member 131 includes a first support portion 131 a that is coupled to the coupling portion 24 of the nozzle head 20, a second support portion b of the outflow valve seat member 121 that constitutes the outflow valve mechanism 12, And a tubular connecting part 131c in which a part 131d is formed. This connection part 131c urges | biases the 1st support part 131a and the 2nd support part 131b to mutually separate direction.
[0033]
As shown in FIG. 8, the contact member 132 includes a coupling portion 132a fixed to the fixing portion 25 of the nozzle head 20 and a lid portion 132b formed at the lower end of the coupling portion 132a.
[0034]
The tubular member 131 and the abutting member 132 are configured such that the coupling portion 132a of the abutting member 132 is inserted into the bent portion 131d of the tubular member 131 and the lid member 131 and the abutting member 132 are left without being loaded with respect to these members. The parts 132b are combined so as to come into contact with the surface of the bent part 131d in the connecting part 131c of the tubular member 131.
[0035]
The lid portion 132b has a shape that matches the shape in a state in which the lid portion 132b is left without applying a load to the connecting portion 131c of the tubular member 131. For this reason, sufficient liquid-tightness can be ensured to prevent leakage of the fluid.
[0036]
9 to 11 are longitudinal sectional views showing the fluid discharge pump 10 according to the first embodiment of the present invention together with the nozzle head 20. 9 shows a state in which the nozzle head 20 is left without applying stress, and FIG. 10 shows a state in which the bellows member 16 is relatively large in volume when the pressing portion 22 of the nozzle head 20 is pressed. FIG. 11 shows a state in which the nozzle head 20 is pressed against the pressing portion 22 in a state where the expanded posture in which the fluid is stored is deformed to a reduced posture in which a relatively small amount of fluid is stored. This shows a state in which the bellows member 16 is deforming from the contracted posture to the expanded posture again.
[0037]
As shown in FIG. 10, when the pressing portion 22 in the nozzle head 20 is pressed, the nozzle head 20 resists the urging force of the tubular member 131 against the outflow valve mechanism 11 constituting the fluid discharge pump 10. Move relatively downward. Thereby, the bending part 131d in the connection part 131c of the tubular member 131 and the lid part 132b in the contact member 132 constituting the leakage prevention mechanism 13 are separated from each other, thereby forming a flow path for the fluid.
[0038]
When the nozzle head 20 continues to move, the guide portion 121c of the outflow valve seat member 121 constituting the outflow valve mechanism 12 comes into contact with the upper limit stopper 23a in the nozzle head 20. After this contact, the nozzle head 20 and the outflow valve mechanism 12 move downward together.
[0039]
For this reason, the bellows member 16 is pressed, the volume in the bellows member 16 is reduced, and the inside of the fluid discharge pump 10 is pressurized. As a result, the valve body 112a of the inflow valve member 112 is disposed at a position where the valve body 112a contacts the opening 111a of the inflow valve seat member 111, the opening 111a is closed, and the valve body 122a of the outflow valve member 122 is It arrange | positions in the position spaced apart from the opening part 121a of the member 121, and the opening part 121a is open | released. For this reason, the fluid in the fluid discharge pump 10 flows out to the discharge part 21 of the nozzle head 20.
[0040]
Further, as shown in FIG. 11, when the pressure on the pressing portion 22 in the nozzle head 20 is released, the nozzle head 20 is configured so that the outflow valve mechanism 12 that constitutes the fluid discharge pump 10 by the urging force of the tubular member 131. Moves relatively upwards. And the guide part 121c of the outflow valve seat member 121 which comprises the outflow valve mechanism 12 contact | abuts the lower limit stopper 23b in the nozzle head 20. FIG. As a result, the lid portion 132b of the contact member 132 constituting the leakage prevention mechanism 13 comes into contact with the surface of the bent portion 131d of the connecting portion 131c of the tubular member 131 again, and the fluid is completely blocked from flowing out. .
[0041]
After the contact, the nozzle head 20 and the outflow valve mechanism 12 move upward together by the restoring force of the bellows member 16. For this reason, the volume in the bellows member 16 is expanded, and the inside of the fluid discharge pump 10 is decompressed. Thus, the valve body 112a of the inflow valve member 112 is disposed at a position separated from the opening 111a of the inflow valve seat member 111, and the valve body 122a of the outflow valve member 122 is separated from the opening 121a of the outflow valve seat member 121. It arrange | positions in the position which contact | abuts. For this reason, the fluid in the fluid reservoir 40 flows into the fluid discharge pump 10.
[0042]
Next, a fluid container according to a second embodiment of the present invention will be described with reference to the drawings. FIG. 12A is a plan view showing the contact member 133 in the leakage preventing mechanism 13 according to the second embodiment of the present invention, and FIG. 12B is a cross-sectional view taken along the line AA in FIG. It is sectional drawing shown.
[0043]
FIGS. 13 to 15 are longitudinal sectional views showing the fluid discharge pump 10 according to the second embodiment of the present invention together with the nozzle head 20. 13 shows a state in which the nozzle head 20 is left unstressed, and FIG. 14 shows a state in which the bellows member 16 is relatively placed inside the nozzle head 20 when the pressing portion 22 of the nozzle head 20 is pressed. FIG. 15 shows a state where the expanded posture in which a large amount of fluid is accommodated is deformed to a contracted posture in which a relatively small amount of fluid is accommodated therein. FIG. This shows a state in which the bellows member 16 is again deformed to the expanded posture. In FIGS. 13 to 15, the same members as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.
[0044]
As shown in FIG. 12, the contact member 133 includes a coupling portion 133a fixed to the fixing portion 25 of the nozzle head 20, and a lid portion 133b formed at the lower end of the coupling portion 133a.
[0045]
In the fluid container according to the first embodiment of the present invention, the leakage prevention mechanism 13 is composed of the tubular member 131 and the contact member 132, whereas the fluid container according to the second embodiment of the present invention is The leak prevention mechanism 13 is different in that it is composed of a tubular member 131 and a contact member 133. That is, the abutting member 132 has a shape in which the lid portion 132b matches the shape in the natural state of the connecting portion 131c of the tubular member 131, but the abutting member 133 has a lid portion 133b in which the connecting portion of the tubular member 131 is connected. It has a shape that abuts a part of the inner peripheral surface of 131c.
[0046]
For this reason, as shown in FIG. 14, when the flow path of the fluid of the leakage prevention mechanism 13 is formed, the flow path can be formed at a time, and the fluid can flow out smoothly.
[0047]
The upper limit stopper 23a and the lower limit stopper 23b described above are for limiting the relative movement amount between the nozzle head 20 and the outflow valve mechanism 12, and are formed in the sliding region 23 of the nozzle head 20. However, as long as it is a member that restricts relative movement between the nozzle head 20 and the outflow valve mechanism 12, it may have another shape or may be formed on another member. These upper limit stopper 23a and lower limit stopper 23b function as movement amount regulating means for restricting the relative movement amount between the nozzle head 20 and the outflow valve mechanism 12.
[0048]
【The invention's effect】
According to the first aspect of the present invention, the resin outflow valve mechanism movable relative to the nozzle head, the first support portion connected to the nozzle head, and the outflow valve mechanism are connected. A tubular member having a second support part and a tubular connection part that is formed with a bent part and connects the first support part and the second support part in a state of being biased in a direction away from each other; One end is connected to the nozzle head and has a coupling portion inserted into the bent portion of the tubular member, and a contact portion formed at the other end of the coupling portion and abutting against the surface of the bent portion in the connecting portion of the tubular member. And the nozzle head descends with respect to the outflow valve mechanism, whereby the bent portion of the tubular member and the lid portion of the contact member are separated from each other to form a fluid passage. It is possible to completely prevent leakage to the outside of the container. .
[0049]
According to the second aspect of the present invention, the inflow valve mechanism is connected via the valve seat member in which the fluid inflow opening is formed, the annular support portion, the support portion, and the plurality of connecting portions. The outflow valve mechanism is connected via a valve seat member in which an opening for fluid outflow is formed, an annular support portion, a support portion, and a plurality of connecting portions. Therefore, it is possible to completely prevent the fluid from leaking to the outside of the container with a simple configuration.
[0050]
According to the invention described in claim 3, since the nozzle head includes the stopper that limits the relative movement amount of the outflow valve mechanism, an appropriate pressing force can be applied to the bellows member. Even when the urging force of the tubular member is large, the relative movement between the nozzle head and the outflow valve mechanism can be stopped at an appropriate position.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a fluid container to which a fluid discharge pump 10 according to a first embodiment of the present invention is applied.
FIG. 2 is a longitudinal sectional view showing a fluid container to which the fluid discharge pump 10 according to the first embodiment of the present invention is applied.
FIG. 3 is a longitudinal sectional view showing a fluid container to which the fluid discharge pump 10 according to the first embodiment of the present invention is applied.
4 is an explanatory view showing an outflow valve seat member 111 constituting the inflow valve mechanism 11 in the fluid discharge pump 10. FIG.
5 is an explanatory view showing an inflow valve seat member 112 constituting the inflow valve mechanism 11 in the fluid discharge pump 10. FIG.
6 is an explanatory view showing an outflow valve member 122 and an outflow valve seat member 121 constituting the outflow valve mechanism 12 in the fluid discharge pump 10. FIG.
FIG. 7 is an explanatory view showing a tubular member 131 constituting the leakage prevention mechanism 13 applied to the fluid container according to the first embodiment of the present invention.
FIG. 8 is an explanatory view showing a contact member 132 constituting the leakage prevention mechanism 13 applied to the fluid container according to the first embodiment of the present invention.
9 is a longitudinal sectional view showing the fluid discharge pump 10 according to the first embodiment of the present invention together with the nozzle head 20. FIG.
10 is a longitudinal sectional view showing the fluid discharge pump 10 according to the first embodiment of the present invention together with the nozzle head 20. FIG.
11 is a longitudinal sectional view showing the fluid discharge pump 10 according to the first embodiment of the present invention together with the nozzle head 20. FIG.
FIG. 12 is an explanatory view showing a contact member 133 in the leakage prevention mechanism 13 according to the second embodiment of the present invention.
13 is a longitudinal sectional view showing a fluid discharge pump 10 according to a second embodiment of the present invention together with a nozzle head 20. FIG.
14 is a longitudinal sectional view showing a fluid discharge pump 10 according to a second embodiment of the present invention together with a nozzle head 20. FIG.
15 is a longitudinal sectional view showing a fluid discharge pump 10 according to a second embodiment of the present invention together with a nozzle head 20. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Fluid discharge pump 11 Inflow valve mechanism 12 Outflow valve mechanism 13 Leakage prevention mechanism 16 Bellows member 16a Inlet 16b Outlet 17 Packing 20 Nozzle head 21 Discharge part 22 Press part 23 Movement area 23a Upper limit stopper 23b Lower limit stopper 24 Joint part 25 Fixed part 30 Lid member 40 Fluid storage part 41 Cylinder member 42 Piston member 43 Inner lid 43a Vent hole 43b Bottom upper part 44 Outer cover 44a Hole 111 Inflow valve seat member 111a Opening part 111b Joint part 112 Inflow valve member 112a Valve body 112b Support portion 112c Connection portion 121 Outflow valve seat member 121a Opening portion 121b Protruding portion 121c Guide portion 121d Connection portion 122 Outflow valve member 122a Valve body 122b Support portion 122c Connection portion 122d Bending portion 122e Recess 131 Tubular member 131a First support portion 131b First 2 Support 131 c connecting portion 131d bent portion 132 abutting member 132a coupling portion 132b lid portion 133 abutting member 133a coupling portion 133b lid portion

Claims (3)

In the fluid discharge pump for discharging the fluid stored in the fluid reservoir from the nozzle head by pressing a nozzle head disposed above the fluid reservoir.
A reduced posture that has an inflow port and an outflow port, and that is pressed by the nozzle head to accommodate a relatively large amount of fluid therein, and that accommodates a relatively small amount of fluid therein. A resin bellows member that transforms into
A resin inflow valve mechanism connected to the inlet of the bellows member;
A resin outflow valve mechanism connected to the outlet of the bellows member and movable relative to the nozzle head;
A first support portion connected to the nozzle head, a second support portion connected to the outflow valve mechanism, a bent portion is formed, and the first support portion and the second support portion are connected to each other. A tubular member having a tubular coupling portion coupled in a state of being biased in a separating direction;
One end of which is connected to the nozzle head and is inserted into the bent portion of the tubular member, and a lid portion which is formed at the other end of the connected portion and contacts the surface of the bent portion of the connecting portion of the tubular member A contact member having
When the nozzle head descends with respect to the outflow valve mechanism, the bent portion of the tubular member and the lid portion of the abutting member are separated from each other to form a fluid passage. Discharge pump. The fluid discharge pump according to claim 1,
The inflow valve mechanism includes a valve seat member having an opening for fluid inflow, and a valve member having an annular support portion and a valve portion connected to the support portion via a plurality of connecting portions. Configured,
The outflow valve mechanism includes a valve seat member in which an opening for fluid outflow is formed, and a valve member having an annular support portion and a valve portion connected to the support portion via a plurality of connecting portions. Constructed fluid discharge pump. In the fluid discharge pump according to claim 1 or 2,
The fluid discharge pump, wherein the nozzle head includes a stopper that limits a relative movement amount of the outflow valve mechanism.

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