JP2000062871A - Ejector - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To ensure that the contents of a container can be used up to the end so that the nozzle of a button and the tip of a pipe always face the same direction. SOLUTION: An ejection pump 1 is provided at an opening 10a of a container 10.
Attach 2. The jet pump comprises a screw cap 21, pistons 17 and 22, a button 23, a nozzle 24, a cylinder 14, an urging member 16, an on-off valve 18, a check valve 15, and a pipe 26. The rotation of the button 23 is restricted by a screw cap 21 which is screwed to the mouth 10a. Further, the cylinder 14 is engaged with the screw cap 21 so as to rotate integrally. A pipe 26 is attached to the tip of the cylinder 14, and the tip 26 a of the pipe is extended to the vicinity of the bottom of the container 10 in the direction of the nozzle 24 of the button 23.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a container containing contents such as a soap solution, a shampoo and a rinse, and a jet pump attached to the mouth of the container. The present invention also relates to an ejector for washing, rinsing, cosmetics, medicine, etc., which sequentially sucks up contents in a container by pushing down a button of the ejecting pump by hand and ejects the contents from a nozzle provided on the button to the outside. 2. Description of the Related Art Conventionally, this type of ejector has been designed to push down a button by hand to push a piston against an urging force, thereby increasing the pressure in a pressurizing chamber of a cylinder and an outlet of the pressurizing chamber. The on-off valve provided on the side is opened, and the contents of the pressurizing chamber are ejected from the nozzle through the ejection passage in the piston to the outside through the ejection passage in the button. On the other hand, when the hand is released from the button after the ejection, the piston is pushed up based on the urging force, the on-off valve is closed, and the pressure in the pressurizing chamber is reduced to provide a check valve provided on the inlet side of the pressurizing chamber. The container is opened, and the contents in the container are sucked up into the pressurized chamber through a pipe that attaches the base end to the lower end of the cylinder. By the way, in such an ejector, when the tip 3a of the pipe 3 is extended to the vicinity of the bottom of the container 4 in the direction of the nozzle 2 of the button 1, as shown in FIG. If the nozzle 2 is tilted downward as shown in the figure when used, the contents 5 in the container 4 can be ejected to the end. [0005] For this reason, some conventional ejectors are constructed as shown in FIG. 7, for example, in which the tip 3a of the pipe 3 extends to the vicinity of the bottom of the container 4 in the direction of the nozzle 2 of the button 1. (See Japanese Utility Model Laid-Open No. 7-40505). [0007] In FIG. 7, the symbol “p” denotes an ejection pump, and the screw cap 6 is screwed to the mouth 4 a of the container 4 and attached to the container 4. The screw cap 6
The button 1 is attached while restricting the rotation around the axis. On the other hand, when screwing the screw cap 6,
Upper end flange 7 of direction regulating member 7 between mouth 4a and the entrance
The same-direction restricting member 7 is fixed with "a" interposed therebetween. The direction regulating member 7 connects the pipe 3 to the lower end, and the tip 3 of the pipe 3
a is extended to the vicinity of the bottom of the container 4 in the direction of the nozzle 2 of the button 1. However, in such a conventional ejector, first, the tip 3a of the pipe 3 is aligned with the direction of the nozzle 2 of the button 1, and the upper end flange 7a is inserted into the screw cap 6. Even when the direction regulating member 7 is attached, when the screw cap 6 is rotated when the ejection pump p is attached to the mouth 4a of the container 4, the rotation of the screw cap 6 is restricted by friction with the mouth 4a. In some cases, the member 7 did not follow, and the nozzle 2 and the tip of the pipe 3 were in different directions. When the content of the container 4 becomes low, the tip 3a of the pipe 3 faces upward, for example, as shown by a two-dot chain line in FIG. Therefore, there is a problem that the contents 5 in the container 4 cannot be spouted to the end. Therefore, an object of the present invention is to attach a jet pump to the mouth of a container, depress the button of the jet pump to sequentially suck up the contents in the container through a pipe, and then to the outside from the nozzle of the button. The object of the present invention is to ensure that the nozzle of the button and the tip of the pipe in the ejector always point in the same direction so that the contents in the container can be completely used up. [0011] Therefore, an ejector according to the present invention penetrates a screw cap 21 and a center of the screw cap 21 as in an embodiment described below with reference to the drawings, for example. Piston 1 that is reciprocally movable
7 and 22; a button 23 attached to the outer end of the piston 17 and 22 to restrict rotation by a screw cap 21; a nozzle 24 provided on the button 23;
a into the screw cap 21 and the screw cap 2
1 and coaxially engages with the screw cap 21 so as to rotate integrally therewith, while accommodating the pistons 17 and 22 and forming a pressurized chamber A therein; Urging member 16 for urging pistons 17 and 22 outward by pressing, cylinder 14 and piston 17
An open / close valve 18 provided between the valve 22 and the opening and closing of the outlet side of the pressurizing chamber A; a check valve 15 provided in the lower end of the cylinder 14 to open and close the inlet side of the pressurizing chamber A; The ejection pump 12 is constituted by a pipe 26 having a base end connected to the lower end of the cylinder 14 in accordance with the direction of the cylinder 24. Then, a container 1 for storing the contents to be ejected.
0, the cylinder 14 is put together with the pipe 26, the tip of the pipe 26 is extended to around the bottom of the container 10, and the screw cap 21 is screwed to the mouth 10a of the container 10,
The jet pump 12 is attached to the mouth 10a of the container 10 with the flange 14a interposed therebetween. When the button 23 is pressed down with a hand, the piston 1 is pressed against the urging force of the urging member 16.
7 and 22, the pressure in the pressurizing chamber A of the cylinder 14 is increased, and the on-off valve 18 is opened. The contents in the pressurizing chamber A are discharged from the discharge passage 22a in the pistons 17 and 22 into the ejection passage of the button 23. On the other hand, when the button 23 is released from the nozzle 24 through the nozzle 23 through the nozzle 23a, the pistons 17 and 22 are pushed up by the urging member 16, the on-off valve 18 is closed, and the pressure in the pressurizing chamber A is reduced. Open the check valve 15 and suck up the contents in the container 10 into the pressurizing chamber A through the pipe 26. When the ejection pump 12 is attached to the opening 10a of the container 10, when the screw cap 21 of the ejection pump 12 is rotated, the button 23 for restricting the rotation by the screw cap 21 is also rotated. The cylinder 14 engaged with the cylinder 21 also rotates integrally, and the pipe 26 connected thereto also rotates. Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a vertical cross section of an ejector according to the present invention. The illustrated ejector is used for hair washing, washing, cosmetics, medicinal use, and the like.
a is provided with a jet pump 12. Although not shown, contents such as a shampoo, a soap solution, a rinse, and a chemical solution are stored in the container 10. The ejection pump 12 is provided with a cylinder 14. As shown in FIG. 2, the cylinder 14 is cylindrical, has a flange 14a at the upper end, and
b, the second step portion 14c, and the tapered portion 14d are provided in this order and are sequentially formed to have a small diameter. A ventilation hole h penetrates radially below the first step portion 14b, and a plurality of upward step portions s are provided on the upper inner peripheral surface of the tapered portion 14d. On the upper surface of the flange 14a of such a cylinder 14, as shown in FIG. 3, a number of elongated ridges a are radially formed at regular intervals. As shown in FIG. 1, a ball-shaped check valve 15 is inserted from above and placed on the tapered portion 14d, and then a coil spring-shaped urging member 16 is inserted and placed on the upward step s. Then, the second piston 17 is put on the urging member 16 and the upper end of the second piston 17 projects upward from the cylinder 14. The second piston 17 is provided with a plurality of vertical grooves 17a on the upper outer periphery, a cylindrical portion 17b in the middle, and an annular portion 17d having a step 17c facing upward on the lower outer periphery.
Then, it is inserted into the center hole and placed on the upwardly-facing step portion 17c, and an on-off valve 18 is attached to the outer periphery of the cylindrical portion 17b. The on-off valve 18 has a plurality of longitudinal grooves 18 in its center hole.
a (see FIG. 6 to be described later), and elastic portions 18b and 18c that press against the inner peripheral surface of the cylinder 14 are formed at the upper and lower portions of the outer periphery. A ring-shaped packing 19 is fitted under the flange 14a of the cylinder 14, and the flange 14a
On top of the bottom surface. The jet pump 12 is also provided with a short cylindrical screw cover 20. The screw cap 21 is pressed into the screw cover 20. The screw cap 21 is shown in FIGS. 4A and 4B.
As shown in FIG.
To form Outside the top 21a, a concentric cylindrical portion 21c is provided standing upright from the top surface. Cylindrical part 2
1c is provided with a notch 21d having an angle α and a vertical split groove 21e at a position facing the notch 21d. On the other hand, inside the top portion 21a, a concentric guide tube portion 21f is formed projecting downward from the inner surface thereof, and two protrusions are formed radially on the inner surface of the top portion 21a with the guide tube portion 21f interposed therebetween. It forms the strip 21g. In addition, a protrusion 21h is provided on the inner peripheral surface of the screw cap 21. The first piston 22 is inserted into the guide cylinder 21f of the screw cap 21 from below. The first piston 22 has a discharge passage 22a in the center in the shape of a pipe, is provided so as to reciprocate through the center of the screw cap 21, and protrudes upward through the cylindrical portion 21c. When the flange 14a is inserted into the screw cap 21 from below, the guide cylinder portion 21f enters into the cylinder 14 from above, and a part of the second piston 17 and the opening / closing valve 18 is moved to the first piston 22a. In the lower end of When the flange 14a is further inserted, the protrusion 2
The flange 14a fits into the screw cap 21 over 1h, and the cylinder 14 is coaxially mounted on the screw cap 21. Then, the flange 14a is attached to the top 21
a on top of the ridge a of the flange 14a
21g in the radial direction of the
And the cylinder 14 is engaged with the screw cap 21 so as to rotate integrally with the screw cap 21. When the flange 14a fits into the screw cap 21, the distal end of the guide cylinder 21f pushes the elastic portion 18b on the upper outer periphery of the on-off valve 18 to push the second piston 17 against the biasing member 16. Push down. As shown in FIG. 1, a pressurizing chamber A is formed by partitioning the inside of the cylinder 14, and an opening / closing valve 18 is provided between the cylinder 14 and the second piston 17 to open and close the outlet side of the pressurizing chamber A. A check valve 15 is provided in the lower end of the cylinder 14 to open and close the inlet side of the pressurizing chamber A. Thereafter, the outer end of the first piston 22 is press-fitted into the center hole of the button 23, and the button 23 is attached to the tip of the first piston 22. The button 23 has an ejection passage 23 a communicating with the discharge passage 22 a of the first piston 22.
It is covered. As shown in FIG. 5, the button 23 has a pair of ribs 23c extending radially from the central cylindrical portion 23b forming the ejection passage 23a so as to sandwich the nozzle 24, and a diameter opposite to the nozzle 24. Rib 23 extending in the direction
d. When attaching the button 23 to the outer end of the first piston 22, the cylindrical portion 21 of the screw cap 21
A pair of ribs 23c is inserted into the notch 21d of c, and the rib 23d is inserted into the split groove 21e, thereby restricting the rotation of the button 23 with respect to the screw cap 21. Then, as shown in FIG.
The base end of the pipe 26 is press-fitted into the lower end of the cylinder 14 by aligning the tip 26a of the button 23 with the direction of the nozzle 24 of the button 23, and communicates and connects the inside of each other. The button 23 has an overcap 2
7 and the lower edge is fitted to the outer periphery of the screw cap 21. Then, together with the pipe 26, the cylinder 14
Is inserted into the container 10 through the mouth 10a, the tip 26a of the pipe 26 is extended to the vicinity of the bottom, and the mouth 10a is covered with the screw cap 21 and screwed. And the screw cap 21
The flange 14a of the cylinder 14 and the packing 19 are sandwiched between the opening 14a and the opening 10a. At this time, screw cap 2
Since both the cylinder 14 and the button 23 rotate together with the rotation of the cylinder 1, the nozzle 24 of the button 23 and the pipe 2
6 always have the same direction. Now, when using this ejector,
The overcap 27 is removed from the screw cap 21. Then, the user puts his hand down the button 23 to enter the recess 21b of the screw cap 21, pushes the first piston 22, and pushes the second piston 17 together against the urging force of the urging member 16. Then, at first, the on-off valve 18 does not move, and as shown in FIG.
7C, the on-off valve 18 is opened apart from the upward step 17c as shown in FIG.
The inside of the pressurizing chamber A of the cylinder 14 and the discharge passage 22a of the first piston 22 communicate with each other through the vertical groove 8a and the vertical groove 17a of the second piston 17. When the second piston 17 is pushed, the pressure in the pressurizing chamber A is increased, and the contents in the pressurizing chamber A are discharged from the discharge passage 22a in the first piston 22 to the button 23.
Is ejected from the nozzle 24 to the outside through the ejection passage 23a. At this time, as the first piston 22 is pushed in, the on-off valve 18 is also pushed down soon, and the elastic portion 18b on the upper outer periphery of the on-off valve 18 passes through the ventilation hole h as shown in FIG. 6C. . Then, the outside and the inside of the container 10 communicate with each other from the space between the button 23 and the screw cap 21 and between the screw cap 21 and the first piston 22 through the ventilation hole h, and the inside of the container 10 is set to the atmospheric pressure. When the hand is released from the button 23 after the ejection, the pistons 17 and 22 are pushed up by the urging member 16, and the on-off valve 18 is again moved upward as shown in FIG.
While closing on top, the pressure in the pressurizing chamber A is reduced, the check valve 15 is opened, and the content in the container 10 is
The water is sucked into the pressure chamber A through the inside. By repeating this operation, the contents in the container 10 are sequentially sucked up into the pressurizing chamber A by using the check valve 15, and the contents in the pressurizing chamber A are opened by opening the on-off valve 18 and the discharge passage 22 is opened.
a from the nozzle 23 of the button 23 through the ejection passage 23a.
Ejects from outside. In the above-described example, while the countless ridges a are formed on the upper surface of the flange 14a of the cylinder 14, the two ridges 2 are formed radially on the inner surface of the top 21a of the screw cap 21.
1 g, and the protrusions a and the protrusions 21 g were fitted to engage the cylinder 14 so as to rotate integrally with the screw cap 21. However, in the present invention, the ridge a
Needless to say, the number of the protrusions 21g is not limited to the example described above. In the above example, the screw cap 21
A pair of ribs 23c are inserted into the notches 21d of the cylindrical portion 21c, and the ribs 23d are inserted into the split grooves 21e to restrict the rotation of the button 23 with respect to the screw cap 21. However, in the present invention, the rotation of the button 23 is not limited to such a means, but may be the rotation of the button 23 so that the button 23 can reciprocate. According to the present invention, when the button is restricted in rotation by the screw cap, the cylinder is engaged with the screw cap so as to rotate integrally, and the ejection pump is attached to the mouth of the container. When the screw cap of the ejection pump is rotated, the cylinder rotates together with the button, and the pipe connected to it also rotates together with the cylinder. The content can be used up to the end.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view of an ejector according to the present invention. FIG. 2 is a longitudinal sectional view of a cylinder used in the jetting device. FIG. 3 is a plan view of the cylinder. FIG. 4 is a perspective view and FIG. 4B is a bottom view of a screw cap used in the ejector. FIG. 5 is a bottom view of a button used in the ejector. FIG. 6 is a partially enlarged view of the ejector showing a state of the on-off valve in use, wherein (A) shows a state before the button is pressed down, (B) shows a state immediately after the button is pressed down, and (C) shows a state where the button is pressed down to a certain extent. Show. FIG. 7 is a longitudinal sectional view of a conventional ejector. FIG. 8 is an explanatory diagram of a use state when the content is low. DESCRIPTION OF SYMBOLS 10 Container 10a Container mouth 12 Jet pump 14 Cylinder 14a Flange 15 Check valve 16 Biasing member 17 Second piston 18 Open / close valve 21 Screw cap 22 First piston 22a Discharge passage 23 Button 23a Discharge passage 24 Nozzle 26 Pipe 26a Pipe tip A Pressurizing chamber

Claims (1)

Claims: 1. A screw cap, a piston provided to reciprocate through a center of the screw cap, and a button attached to an outer end of the piston to restrict rotation by the screw cap. The nozzle provided on the button and the upper end flange are fitted into the screw cap and mounted coaxially with the screw cap, and engaged so as to rotate integrally with the screw cap, while the piston is housed inside. A cylinder that forms a pressurizing chamber, a biasing member that is housed in the cylinder and biases the piston outward, and that is provided between the cylinder and the piston to open and close the outlet side of the pressurizing chamber A check valve that is provided in the lower end of the cylinder and opens and closes the inlet side of the pressurizing chamber, and a base end is connected to the lower end of the cylinder with the tip aligned with the direction of the nozzle. And a cylinder for storing the content to be ejected, the cylinder is inserted together with the pipe, the tip of the pipe is extended to around the bottom of the container, and the screw is inserted into the mouth of the container. Attach the jet pump to the mouth of the container with the cap screwed in place with the flange in between, and when pushing down the hand with the button, push the piston against the urging force of the urging member, While increasing the pressure in the pressurized chamber of the cylinder and opening the on-off valve, the contents of the pressurized chamber are ejected from the nozzle through a discharge passage in the piston to the outside through the ejection passage of the button, while the button is ejected. When the hand is released, the piston is pushed up based on the urging member,
An ejector comprising: closing the on-off valve, reducing the pressure in the pressurized chamber, opening the check valve, and sucking up the contents in the container through the pipe into the pressurized chamber.