JP3667422B2 - pump - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pump, and more particularly, to a push-down head type pump that is fixed to a mouth and neck of a container body and ejects liquid in the container body into a liquid, mist, or foam.
[0002]
[Prior art]
As a pump for liquid dispensing, for example, a container body with a mounting cylinder in which a cylinder with a lower suction valve is inserted and fitted to the outer periphery of the mouth neck part inside a container body that stands up from the upper end of the trunk part In addition, the upper end of the stem that protrudes from the outer periphery of the lower end of the piston fitted to the cylinder is projected through the center of the mounting cylinder so that it can be moved up and down in the upward biased state above the neck of the container body mouth, It is known that a push-down head with a nozzle is fitted to the upper end of the stem. These pumps are constructed so that the liquid in the cylinder is ejected from the nozzle outlet through the stem by pushing down the head, and the liquid in the container is sucked into the cylinder through the suction valve when the head is raised. Yes.
[0003]
A stem having a cylinder for air and a cylinder for liquid inserted into the container body, the upper end thereof being fixed to the neck of the container body mouth, and protruding from the inside of the liquid cylinder to the top of the container body mouth neck The head is fitted to the upper end of the cylinder, and a jetting operation member is provided in which the lower part of the stem is linked to the piston in each cylinder. There is also known a foam ejection pump configured to be foamed and ejected from an ejection port of a nozzle.
[0004]
Generally, in these pumps, a discharge valve is provided at the upper end of the stem. As shown in FIG. 6, the discharge valve of this type of pump has a ball-shaped valve body 52 placed on a valve seat 51 protruding from the upper part of the stem 50, and the ball-shaped valve body 52 has a predetermined vertical movement. In order to regulate the stroke, for example, a locking projection 55 suspended from the inside of the vertical cylinder 54 of the head 53 is suspended above the ball-shaped valve body 52.
[0005]
[Problems to be solved by the invention]
In the conventional pump of this type, a ball-shaped valve body 52 is placed on the valve seat 51 and the head 53 is fitted from the upper side when the pump is assembled. At that time, especially when the assembly work is performed manually, the ball valve body is accidentally dropped by tilting the pump body other than the head, etc., and the head is removed without knowing that the small ball valve body has come off. There was a risk that it would fit.
[0006]
In consideration of such a point, the present invention has a possibility that the discharge valve once mounted does not come off even if the pump body is tilted, and the ball-shaped valve body does not come off and is lost at the time of assembly, and a smooth assembly operation can be performed. A pump is proposed.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the pump according to the first aspect of the present invention is a pump that closes and fixes the mouth-and-neck portion 3 of the container body 2, and the push-down head 5 with the jet nozzle 4 protruding from the upper end portion is connected to the upper end of the stem 6. A liquid ejecting pump configured to be able to move up and down in an upwardly biased state and to eject liquid from the ejection port by the up and down movement of the ejecting working member. In this case, the tubular member 8 is fixedly fitted to the upper part of the stem 6 and has a flange-like valve seat 11 protruding from the lower part of the inner surface and a locking protrusion 12 protruding from the upper part of the inner surface. The discharge valve 10 is constituted by a ball-shaped valve body 9 that is mounted on the valve seat 11 so as to be able to move up and down by forcibly moving over the locking projection 12 and configured as a liquid jet pump.
[0008]
The pump according to the second aspect of the present invention is a pump that closes and closes the mouth / neck portion 3 of the container body 2 and has a push-down head 5 with a spout 4 projecting at the upper end portion fitted to the upper end of the stem 6. In the foam jet pump, the jet actuating member 7 is configured to be movable up and down in an upward biased state, and the jet actuating member 7 is configured to eject the foam from the jet port by the vertical movement of the jet actuating member. 6 a cylindrical member 8 that is fixedly fitted to the upper part of the inner surface, has a flange-shaped valve seat 11 protruding from the lower part of the inner surface, and has a locking protrusion 12 protruding from the upper part of the inner surface, and the locking protrusion 12. A discharge valve 10 is configured by a ball-shaped valve body 9 that is forcibly overcome and placed on the valve seat 11 so as to be movable up and down.
[0009]
The pump according to the third aspect of the present invention is a pump that closes and closes the mouth and neck portion 3 of the container body 2 and has a push-down head 5 with a spout 4 projecting at the upper end portion fitted to the upper end of the stem 6. In the liquid jet pump, the jet actuating member 7 is configured to be movable up and down in an upward biased state, and the jet actuating member is configured to eject liquid from the jet port by the vertical movement of the jet actuating member. 6 is a fitting cylinder 24 in which a tubular valve seat 23 standing upward via a flange 22 projecting from the upper part of the inner part 6 and a valve plate 26 for closing the upper surface of the valve seat so as to be openable and closable are fitted to the inner surface of the stem 6. The discharge valve 10 is constituted by a pair of elastic rod-like hinges 25 protruding at a predetermined interval, and the discharge valve 10 is configured.
[0010]
According to a fourth aspect of the present invention, the pump according to the fourth aspect of the present invention is a pump that closes and closes the mouth-and-neck portion 3 of the container body 2, and has a push-down head 5 with a spout 4 protruding at the upper end portion fitted to the upper end of the stem 6. In the foam jet pump, the jet actuating member 7 is configured to be movable up and down in an upward biased state, and the jet actuating member 7 is configured to eject the foam from the jet port by the vertical movement of the jet actuating member. 6 is a fitting cylinder 24 in which a tubular valve seat 23 standing upward via a flange 22 projecting from the upper part of the inner part 6 and a valve plate 26 for closing the upper surface of the valve seat so as to be openable and closable are fitted to the inner surface of the stem 6. A foam jet pump characterized in that the discharge valve 10 is composed of a pair of elastic rod-like hinges 25 projecting at a predetermined interval and projecting through a valve member 27.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in the drawings, the pump 1 of the present invention closes and fixes the mouth-and-neck portion 3 of the container body 2 and presses the upper head with a push-down head 5 with a spout 4 projecting from the upper end portion so as to urge upward. The spray actuating member 7 is mounted so as to be movable up and down in a state, and the jet actuating member 7 is configured to eject liquid from the spout 4 by the up and down movement of the jet actuating member 7 or the jet actuating member 7 It is configured so that bubbles are ejected from the outlet 4.
[0012]
In the case of a pump that ejects liquid, it will be described without illustration, but for example, via a cylinder that has its upper end fixed to the container neck and suspended in the container and a suction valve provided at the lower end of the cylinder. The pipe that connects the inside of the cylinder and the bottom of the container and the piston that is slidably fitted in the cylinder protrudes from the lower outer surface of the stem, and a push-down head with a spout is fitted and fixed on the top of the stem. Examples include a jetting operation member that is mounted as possible, a coil spring that constantly urges the jetting operation member upward, and a discharge valve provided in the upper part of the stem.
[0013]
In addition, as a pump for jetting bubbles, for example, a cylinder member provided with a cylinder for air and a cylinder for liquid is suspended in the container body, and the upper end thereof is fixed to the neck of the container body and protrudes to the upper end part. A push-down head with a spout is fitted to the upper end of the stem so that it can move up and down in an upward biased state, and a spout operating member is provided in which the bottom of the stem is linked to the piston in each cylinder. The outside air is introduced into the cylinder for the liquid, the liquid in the container is introduced into the cylinder for the liquid, and the air and liquid in each cylinder are merged when the ejection operation member is pushed down, and the mesh is arranged downstream of the junction. The foaming layer is allowed to pass through to be foamed, and bubbles are ejected from the ejection port.
[0014]
The first and second aspects of the present invention are pumps having such a configuration, and are provided with a discharge valve 10 comprising a cylindrical member 8 and a ball-shaped valve element 9. The cylindrical member 8 is fitted and fixed to the upper part in the stem 6, has a flange-shaped valve seat 11 projecting from the inner surface lower part, and a locking projection 12 projecting from the upper inner surface. The ball-shaped valve element 9 is mounted on the valve seat 11 so as to be movable up and down by forcibly getting over the locking projection 12. In the example of FIG. 1, a flange-like valve seat 11 that inclines and descends inwardly protrudes, and a plurality of locking protrusions 12 that form a hemispherical shape protrude in the circumferential direction.
[0015]
Therefore, at the time of assembly, as shown in FIG. 2, the cylindrical member 8 to which the ball-shaped valve element 9 has been previously fitted is fitted to the upper end of the stem 6, and then the head 5 is fitted. There is no inconvenience such as the body 9 coming off due to vibration or tilting of the pump body, and there is no possibility of hindering the assembly work.
[0016]
The embodiment shown in FIG. 1 is an example of a pump that ejects bubbles, and the formation of the pump 1 is mainly made of a synthetic resin, and is formed partially using a metal, an elastomer, etc. as required. The mounting cylinder 13 is screwed onto the outer periphery of the container body neck 3 to be fixed to the container body 2. Further, a large-diameter cylinder 14 for air whose upper portion is fixed to the mounting cylinder 13 and a small-diameter cylinder 15 for liquid whose upper end is opened at the center of the bottom wall of the large-diameter cylinder 14 are inserted into the container body 2. A suction valve is arranged at the lower end of the small-diameter cylinder 15, and the upper end of the pipe 16 is fitted, and the lower end is suspended from the lower end of the container.
[0017]
The push-down head 5 has a lower end of a vertical cylinder 18 that is integrally suspended in the center of the outer case 17 having a cylindrical shape with a lower end opening. The lower end of the vertical cylinder 18 is fitted to the outer periphery of the upper end of the stem 6. A nozzle 19 is projected through the nozzle 17, the nozzle 4 is opened at the tip, and a foamed layer 20 made of mesh is horizontally installed in the vertical cylinder 18 above the stem fitting portion. An air passage 21 communicating the inside of the stem 6 and the inside of the large-diameter cylinder 14 is provided around the upper end.
[0018]
In the large-diameter cylinder 14 and the small-diameter cylinder 15, although not shown, a large-diameter piston, a small-diameter piston, and the like are arranged so as to be interlocked with the vertical movement of the stem 6. The outside air is introduced into the cylinder 14 and the liquid in the container body 2 is introduced into the small diameter cylinder 15 via the suction valve. When the ejection operation member 7 is pushed down, the air and liquid in each cylinder are And are foamed by the foaming layer 20 downstream of the joining point and discharged from the jet port 4.
[0019]
The invention described in claim 3 and claim 4 is a pump for ejecting liquid or foam as described above, and as shown in FIG. And a valve plate 26 for closing the upper surface of the cylindrical valve seat 23 through a hinge 25 from the inner surface of the fitting cylinder 24 fitted to the inner surface of the stem 6 around the valve seat. A discharge valve 10 is provided, which is composed of a valve member 27 that integrally projects. The valve member 27 is preferably formed of an elastic material such as synthetic resin or elastomer. In this embodiment, the valve plate 26 is integrally projected through a pair of elastic thin rod-like hinges 25 projecting from the inner surface of the fitting cylinder 24 at a predetermined interval. Since the other configuration is the same as that of the embodiment of FIG. 1, the same parts are denoted by the same reference numerals and description thereof is omitted.
Further, in the case of the above-described liquid jet pump, if a known mist forming mechanism is provided at the nozzle tip, mist can be jetted as it is.
[0020]
【The invention's effect】
As described above, the pump according to the present invention includes a jetting operation member formed by fitting a push-down head with a jetting port protruding from the upper end portion to the upper end of the stem so as to be movable up and down in an upwardly biased state. The pump is configured to eject liquid or bubbles from the jet port by movement, and is fitted and fixed to the upper part in the stem, and a flange-shaped valve seat is projected on the lower part of the inner surface, and a locking projection is formed on the upper part of the inner surface. Since a discharge valve consisting of a protruding cylindrical member and a ball-shaped valve body that is mounted on the valve seat so as to move over the locking projection forcibly is provided, the final pump assembly process At the time of head fitting, which is a stage, there is no risk that the head is fitted without being noticed while losing the ball-shaped valve body such as a conventional pump, and smooth and reliable assembly can be performed.
[0021]
In addition, a cylindrical valve seat erected upward via a flange projecting from the upper part of the stem, and a valve seat upper surface opened and closed via a hinge from the inner surface of the fitting cylinder fitted to the inner surface of the stem around the valve seat A device provided with a discharge valve composed of a valve member formed by protruding a valve plate that can be closed can be smoothly and reliably assembled. Further, when the valve member is fitted, a discharge valve can be formed regardless of whether the member is fitted from above or below. From this point, further smooth assembly can be performed.
[Brief description of the drawings]
FIG. 1 is a partially cutaway side view of an essential part showing an embodiment of the present invention.
FIG. 2 is an enlarged cross-sectional view of a main part of an upper end portion of a stem of the same embodiment.
FIG. 3 is a partially cutaway side view of the essential part showing another embodiment of the present invention.
FIG. 4 is an enlarged cross-sectional view of a main part of an upper end portion of a stem of the same embodiment.
FIG. 5 is a plan view of the valve member of the same embodiment.
FIG. 6 is a partially cutaway side view showing an example of a conventional pump before the head is fitted.
[Explanation of symbols]
2 ... container body, 3 ... mouth and neck, 4 ... spout, 5 ... push-down head, 6 ... stem,
7 ... Ejection actuating member, 8 ... Cylindrical member, 9 ... Ball valve body, 10 ... Discharge valve, 11 ... Valve seat,
12 ... Locking projection, 22 ... Flange, 23 ... Cylindrical valve seat, 24 ... Fitting cylinder, 25 ... Hinge,
26… Valve plate, 27… Valve member

Claims (4)

A pump that closes and fixes the mouth-and-neck portion 3 of the container body 2, and is an upwardly biased state of the ejection operating member 7 in which the push-down head 5 with the ejection port 4 protruding from the upper end portion is fitted to the upper end of the stem 6. In a liquid jet pump configured to be able to move up and down and ejecting liquid from the jet port by the vertical movement of the jetting operation member, the pump is fitted and fixed to the upper part in the stem 6; A tubular member 8 having a flange-like valve seat 11 projecting from the lower inner surface and a latching projection 12 projecting from the upper inner surface, and the latching projection 12 forcibly getting over the valve seat 11 A pump for discharging liquid, characterized in that a discharge valve 10 is constituted by a ball-shaped valve body 9 placed so as to be movable up and down. A pump that closes and fixes the mouth-and-neck portion 3 of the container body 2, and is an upwardly biased state of the ejection operating member 7 in which the push-down head 5 with the ejection port 4 protruding from the upper end portion is fitted to the upper end of the stem 6. In the foam jet pump constructed so as to be able to move up and down, and to blow out the foam from the jet outlet by the vertical movement of the jetting operation member, A tubular member 8 having a flange-like valve seat 11 projecting from the lower inner surface and a latching projection 12 projecting from the upper inner surface, and the latching projection 12 forcibly getting over the valve seat 11 A foam jet pump characterized in that a discharge valve 10 is constituted by a ball-shaped valve element 9 placed so as to be movable up and down. A pump that closes and fixes the mouth-and-neck portion 3 of the container body 2, and is an upwardly biased state of the ejection operating member 7 in which the push-down head 5 with the ejection port 4 protruding from the upper end portion is fitted to the upper end of the stem 6. In the liquid jet pump constructed so as to be able to move up and down, and to eject liquid from the jet outlet by the vertical movement of the jetting operation member, a flange 22 protruding from the upper part in the stem 6 is provided. A pair of a cylindrical valve seat 23 erected upward via a fitting cylinder 24 fitted to the inner surface of the stem 6 with a valve plate 26 that closes the upper surface of the valve seat so as to be openable and closable. A pump for discharging liquid, characterized in that the discharge valve 10 is constituted by a valve member 27 projecting through an elastic rod-like hinge 25 of the above-mentioned. A pump that closes and fixes the mouth-and-neck portion 3 of the container body 2, and is an upwardly biased state of the ejection operating member 7 in which the push-down head 5 with the ejection port 4 protruding from the upper end portion is fitted to the upper end of the stem 6. In the foam jet pump, which is configured so as to be able to move up and down, and the foam is ejected from the jet outlet by the vertical movement of the jet actuating member, a flange 22 protruding from the upper part in the stem 6 is provided. A pair of a cylindrical valve seat 23 erected upward via a fitting cylinder 24 fitted to the inner surface of the stem 6 with a valve plate 26 that closes the upper surface of the valve seat so as to be openable and closable. A foam jet pump characterized in that the discharge valve 10 is constituted by a valve member 27 protruding through an elastic rod-like hinge 25 of the above.

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