JP5186056B1 - Compressor / depressurizer, discharge device and suction / discharge device using the same - Google Patents

Abstract

A pump device that performs pressurization and pressure reduction suitable for a reusable discharge device. Also, a pump device that can be used as a pump device for a device that performs suction and discharge is obtained.
SOLUTION: A cylinder that can move linearly, a fixed piston that divides the cylinder into two in the direction in which the cylinder can move linearly, and a communication vent that can communicate pressure changes to the pressure receiving section by connecting to the pressurizing chamber or the decompression chamber. A switching mechanism for switching the connection to the pressurizing chamber or the decompression chamber, and a leak hole communicating with the pressurization chamber and a leak hole communicating with the decompression chamber.
[Selection] Figure 2

Description

  The present invention relates to an apparatus capable of pressurization and decompression, a discharge apparatus capable of discharging a liquid substance using the apparatus, and an apparatus capable of inhaling and discharging a liquid substance.

Devices capable of discharging liquid substances stored in containers using a pump mechanism are widely used in cosmetics, pharmaceuticals, insecticides, sprays for painting, seasonings and the like.
In particular, by depressing the operation part provided at the container head, the contents sucked into the pump suction chamber from the container are discharged to the outside and the air in the container is exhausted in conjunction with the suction. An airless container with a pump having a sliding bottom lid that slides upward is known.

  In this container, since the operation part is provided in the head part of the container, there is a merit that the operability is high and the operation part can be stably placed on a table or the like with the operation part at the top. Furthermore, it has the feature that it can be used up without leaving the contents in the container. However, in such a structure, since the sliding bottom cover is movable, there is a problem that liquid leakage occurs if the sealing property with the inner peripheral surface of the container cannot be secured.

  In order to improve the sealing performance between the sliding bottom lid and the container inner peripheral surface against this problem, an annular outer periphery that slides in a sealed state in pressure contact with the inner peripheral surface of the container around the sliding bottom lid body A surface portion is formed, and an annular outer peripheral surface portion has an upper outer peripheral surface portion and a lower outer peripheral surface portion formed from the periphery of the sliding bottom lid body to the upper side and the lower side, and a tip portion of the upper outer peripheral surface portion is directed upward. And an annular protrusion is formed on the upper end of the inclined surface, closer to the proximal end than the leading edge, and is formed on the upper surface of the container. The outer peripheral surface of the base end side region from the protruding portion in the outer peripheral surface portion is formed in an inclined surface shape that reduces the outer diameter so as to gradually become thinner toward the base end side, and also on the distal end portion of the lower outer peripheral surface portion. Proposed with an annular protrusion formed on the inner surface of the container (for example, , Patent Document 1).

JP 2003-212262 A

  However, in the airless container with a pump as described above, it is difficult to reuse the container because the sealing performance between the sliding bottom cover and the inner peripheral surface of the container is improved. That is, when the contents are used up, the sliding bottom lid is at the upper end of the container, and new contents cannot be filled unless this is pushed down to the container bottom.

  Therefore, after removing the pump mechanism provided at the head, it is necessary to push down the sliding bottom lid from the top of the container with a finger or the like. However, when pressed down with a finger or the like, it is difficult to apply a uniform force to the entire upper surface of the sliding bottom cover, and as a result, the sliding bottom cover may be tilted or the annular protrusion may be damaged. was there.

  Since the sliding bottom cover has a complicated structure as described above, thereby ensuring a certain sealing performance, once it is tilted or even a part of it is slightly damaged, the original sealing performance is restored. It was difficult.

  The present invention has been made to solve the above problem, and proposes a new pump mechanism capable of not only pressurization but also decompression, and by using this, a discharge device suitable for reuse. Propose.

The pressurizing and depressurizing device according to the present invention includes a piston, a cylinder that can move linearly relative to the piston, and the cylinder divided into two by the piston along a direction in which the cylinder can move relatively linearly. A pressure chamber, a decompression chamber, a communication vent passage that is connected to the pressurization chamber or the decompression chamber, and is capable of transmitting a pressure change to the pressure receiving portion, the transmission vent passage, and the pressurization chamber or A switching mechanism that switches connection with the decompression chamber, an elastic body that gives an elastic restoring force to the piston and the cylinder in the opposite direction along a direction in which the linear movement is possible, the piston and the cylinder, An operation unit that changes the relative position of the pressure chamber along the direction in which the linear movement is possible, and changes the volumes of the pressurization chamber and the decompression chamber in opposite phases. The cylinder has a pressurizing chamber communicating tube communicating with the pressurizing chamber, a pressurizing chamber leak hole provided at the other end different from the pressurizing chamber of the pressurizing chamber communicating tube, and a decompression communicating with the decompressing chamber. And a decompression chamber leak hole provided at the other end different from the decompression chamber of the decompression chamber communication tube. In the pressurization mode, the transmission mechanism and the pressurization chamber are The cylinder is moved relative to the piston while closing the pressurizing chamber leak hole, and in the decompression mode, the transmission air passage and the decompression chamber are communicated by the switching mechanism, and the decompression chamber the cylinder is characterized in the this to relative movement with respect to the piston while closing the leak hole.

  The pressurizing and depressurizing device according to the present invention is configured as described above, so that pressurization and depressurization can be performed by the same pressing operation. Therefore, a discharge device that can be easily reused, and suction as well as discharge are possible. It is possible to realize a simple suction / discharge device and the like.

1 is an external perspective view of a discharge device according to the present invention. It is a cross-sectional perspective view for demonstrating the structure of the discharge apparatus which concerns on this invention. It is sectional drawing for demonstrating operation | movement of the pressurization / decompression apparatus which concerns on this invention, and is a figure of the steady position in pressurization mode. It is sectional drawing for demonstrating operation | movement of the pressurization / decompression apparatus which concerns on this invention, and is a figure of the pressing-down position in pressurization mode. It is sectional drawing for demonstrating operation | movement of the pressure increase / decrease apparatus which concerns on this invention, and is a figure of the steady position in pressure reduction mode. It is sectional drawing for demonstrating operation | movement of the pressurization / decompression device which concerns on this invention, and is a figure of the pressing position in decompression mode. It is explanatory drawing for demonstrating the mode switching mechanism and stroke control mechanism of the pressurization / decompression device which concerns on this invention. It is explanatory drawing for demonstrating the mode switching mechanism and stroke control mechanism of the pressurization / decompression device which concerns on this invention. It is explanatory drawing for demonstrating one mechanism of the discharge part of the discharge device which concerns on this invention, and a suction discharge device. It is sectional drawing for demonstrating operation | movement of the pressurization / decompression apparatus which concerns on Embodiment 2 of this invention, and is a figure of the steady position in pressurization mode. It is sectional drawing for demonstrating operation | movement of the pressurization / decompression apparatus which concerns on Embodiment 3 of this invention, and is a figure of the steady position in pressurization mode. It is sectional drawing for demonstrating operation | movement of the pressure increase / decrease apparatus which concerns on Embodiment 4 of this invention, and is a figure of the steady position in pressurization mode.

Embodiment 1 FIG.
Hereinafter, embodiments of a pressure-intensifying / depressurizing device, a discharge device using the same, and a suction / discharge device according to the present invention will be described with reference to the drawings. The following embodiment is an example of the present invention, and the present invention is not particularly limited to this example.

First, with reference to FIGS. 1 and 2, the configuration of the pressure-intensifying / depressurizing device according to the present invention, a discharge device using the same, and a suction / discharge device will be described.
FIG. 1 is a configuration diagram of a discharge device according to the present invention. The suction and discharge device has the same configuration, which will be described later.

  The discharge device 1 includes a pressure increasing / decreasing device 10 and a liquid holding / discharge device 20. The pressure change generated by the pressure increasing / decreasing device 10 is transmitted to the liquid holding / discharging device 20 through the transmission air passage 16a.

First, the main configuration of the pressure increasing / decreasing device 10 will be described with reference to FIG. The pressurizing / depressurizing device 10 can operate in two types of modes, a pressurizing mode and a depressurizing mode, and FIG. 2 shows a configuration in the former mode.
In the following description, terms indicating directions such as “downward” and “upward” are used for convenience, and these correspond to the top, bottom, left and right of the drawings used for the description.

The fixed shaft 16 is fixed to the liquid holding / discharging device 20, and has a tubular transmission air passage 16a therein.
The movable cylinder 11 is a cylinder that is movable in the vertical direction with respect to the fixed shaft 16, and is provided rotatably around the central axis of the fixed shaft 16. Note that FIG. 2 shows the time when the movable cylinder 11 is at the upper limit of the movable range in the vertical direction.

  The movable cylinder 11 can be pushed down by pushing the movable cylinder operation part 11a corresponding to the uppermost part with a finger or the like. The movable cylinder operation portion 11a is provided with a pressurizing chamber vent 11d and a decompression chamber vent 11e communicating with pressurizing chambers 14a and 14b, which will be described later, and a decompression chamber 17, respectively.

  In the pressurizing mode, the pressurizing chamber vent 11d is provided on the right hand of the movable cylinder operating portion 11a, and when the movable cylinder operating portion 11a is pushed with a thumb or the like from the right side, the pressurizing chamber vent 11d is simultaneously opened. It is easy to close. In the decompression mode, the movable cylinder 11 rotates 180 °, and the decompression chamber vent 11e is in a position where it can be easily closed with a thumb or the like.

  A plate-like rotation synchronization plate 11 b is fixed to the inner wall of the movable cylinder 11 at the upper middle stage of the movable cylinder 11. The rotation synchronization plate 11b is provided with a hole through which the rotation synchronization shaft 15 described later is passed.

  Above the rotation synchronization plate 11b is a pressurizing chamber 14a that is a space surrounded by the movable cylinder operating portion 11a and the inner wall of the movable cylinder 11, and below the rotation synchronization plate 11b is a fixed piston 13 and There is a pressurizing chamber 14 b that is a space surrounded by the inner wall of the movable cylinder 11. The pressurizing chamber 14a and the pressurizing chamber 14b communicate with each other through a hole through which the rotation synchronization shaft 15 passes, and the pressurizing chamber 14 is formed by combining both chambers.

  The movable cylinder bottom portion 11 c forms the bottom portion of the movable cylinder 11. A space surrounded by the fixed piston 13 and the inner wall of the movable cylinder 11 constitutes a decompression chamber 17.

  An elastic member 12 such as a coil spring is provided below the movable cylinder bottom 11c, and exerts an upward pressure on the back surface of the movable cylinder bottom 11c to push up the entire movable cylinder 11.

The fixed piston 13 is rotatably fixed to the uppermost part of the fixed shaft 16. The rotation axis substantially coincides with the central axis of the fixed shaft 16.
Further, an air passage (not shown) is provided inside the fixed piston 13.

  Above the fixed piston 13, a rotation synchronization shaft 15 is fixed to the fixed piston 13, and a tubular pressurizing chamber connection path 15 a is provided inside the rotation synchronization shaft 15. In the pressurizing mode, the pressurizing chamber 14 and the transmission vent passage 16a are in communication with each other through the pressurizing chamber connecting passage 15a and the vent passage in the fixed piston 13.

  The rotation synchronization shaft 15 passes through a hole provided in the rotation synchronization plate 11b and passes through the pressure chamber 14a. Since the hole provided in the rotation synchronization plate 11b is opened so as to pass the rotation synchronization shaft 15 with a slight clearance, it rotates in synchronization with the rotation of the movable cylinder 11. Here, the rotation synchronizing shaft 15 is eccentric to the rotation shaft of the movable cylinder 11 and extends upward. In this way, when the movable cylinder 11 rotates, the rotation synchronization shaft 15 receives a moment around the rotation axis of the movable cylinder 11 via the rotation synchronization plate 11 b, and the movable cylinder 11 is moved together with the fixed piston 13. Can rotate synchronously.

In addition, if the shape of the rotation synchronizing shaft 15 is not a columnar shape but a quadrangular prism or the like, the rotation synchronization shaft 15 can be rotated without being eccentric with the rotation axis of the movable cylinder 11. However, in this case, since the rotational moment becomes small, it is desirable to provide the rotation synchronization shaft 15 at an eccentric position.
Further, since there is a slight gap in the opening provided in the rotation synchronization shaft 15 and the rotation synchronization plate 11b, the pressurization chamber 14a and the pressurization chamber 14b communicate with each other.

  However, the rotation synchronization shaft 15 and the opening provided in the rotation synchronization plate 11b may slide in an airtight manner. In this case, for example, the pressurizing chamber 14a and the pressurizing chamber 14b are brought into a communication state by configuring the pressurizing chamber connecting path 15a so as to pass through the inside of the rotation synchronization shaft 15 to the pressurizing chamber 14a. it can.

  The pressurizing chamber 14a secures a space for the rotation synchronization shaft 15 to escape when the movable cylinder 11 is pushed down. The reason why the pressurizing chamber 14a communicates with the pressurizing chamber 14b is that the movable cylinder 11 cannot be pushed down when the pressurizing chamber 14a becomes an independent airtight space.

  Although the rotation synchronization mechanism is formed in the pressurizing chamber 14 in FIG. 2, it can be formed on the decompression chamber 17 side. However, since there is the fixed shaft 16 and the elastic member 12 on the decompression chamber 17 side, it is necessary to consider the space distribution between these components and the components that control the rotation synchronization mechanism. A synchronization mechanism is provided on the chamber 14 side.

  A cylindrical decorative plate 18 is provided so as to surround the movable cylinder 11. For example, as shown in FIG. 1, the decorative plate 18 is fastened and fixed to the liquid holding and discharging device 20. The movable cylinder 11 slides up and down in the decorative plate 18. The movable cylinder 11 does not need to be airtightly slid with respect to the inner wall of the decorative plate 18 and may be slidable as a guide for the vertical movement of the movable cylinder 11.

  If the finger is released after the movable cylinder operating portion 11a is pushed down with the finger, the movable cylinder 11 is returned upward by the restoring force of the elastic member 12. However, in order to make this movement slow, the movable cylinder 11 is movable. The cylinder 11 may be slid in a substantially airtight manner with respect to the inner wall of the decorative plate 18.

Next, the configuration of the liquid holding / discharging device 20 will be described.
The liquid holding / discharging device 20 includes a discharge portion 21, a liquid holding space 22, a sliding bottom lid 23, and a pressure adjustment space 24.

The discharge part 21 is provided with a check valve 21a formed of a needle valve.
The check valve 21a opens only in the direction in which the contents are discharged from the inside of the liquid holding and discharging device 20 to the outside.
A ball valve or the like may be used as the check valve 21a. However, when a needle valve is used, there is an advantage that an elastic member such as a spring constituting the valve does not contact the contents. For example, when the content is a highly reactive liquid or the like, there is a concern that a spring or the like may be corroded and physical properties such as an elastic constant may be deteriorated. An elastic member such as a spring is a member accompanied by deformation of the member itself, unlike other constituent members. Therefore, characteristic deterioration is remarkable when corrosion or the like occurs, and processing for preventing corrosion is performed. However, since the member itself is deformed, there is also a problem that it is easy to take corrosion prevention processing.

The liquid holding space 22 is a space sandwiched between the discharge unit 21 and the sliding bottom lid 23.
The discharge part 21 and the liquid holding space 22 are detachably airtightly fixed. For example, it is fixed by screwing or the like.
The pressure adjustment space 24 is a sealed space provided below the sliding bottom lid 23, and when the pressure change generated by the pressure increasing / decreasing device 10 is transmitted through the transmission vent 16 a, the pressure adjusting space 24 is a sliding bottom. It is a space in which the volume changes so as to cancel the transmitted pressure change as the lid 23 moves up and down.

  For example, when the transmitted pressure is pressurization (positive pressure), the sliding bottom cover 23 is raised and the volume of the pressure adjustment space 24 is expanded to cancel the pressure change. Then, the sliding bottom cover 23 pushes out the contents from the discharge part 21 and discharges them.

Next, the operation of the pressure increasing / decreasing device 10 will be described with reference to FIGS.
3 to 6 are schematic diagrams for explaining the operation, and there are some differences in shape and the like from FIG. 2, but the operation principle can be considered in the same manner as in FIG.

First, the operation of the pressure increasing / decreasing device 10 in the pressurizing mode will be described with reference to FIGS. 3 and 4.
In the pressurizing mode, the movable cylinder operating portion 11a is pushed in while closing the pressurizing chamber vent hole 11d with a finger. By this operation, the movable cylinder 11 is pushed downward. The downward movement of the movable cylinder 11 decreases the volume of the pressurizing chamber 14 composed of the pressurizing chamber 14a and the pressurizing chamber 14b. At this time, the pressure in the pressurizing chamber 14 rises because the pressurizing chamber vent hole 11d is closed with a finger. As shown in FIG. 3, the pressurizing chamber 14 communicates with the transmission vent passage 16a through the pressurization chamber connection passage 15a and the vent passage inside the fixed piston 13, and is hermetically connected to the transmission vent passage 16a. Pressurize the pressure receiving part. For example, the pressure receiving part in the present embodiment is the sliding bottom cover 23 of the liquid holding and discharging device 20, and the sliding bottom cover 23 is raised to increase the volume of the pressure adjustment space 24.

  FIG. 4 shows a state in which the movable cylinder 11 is fully pushed downward in the pressurizing mode. Compared to FIG. 3, the volumes of the pressurizing chamber 14a and the pressurizing chamber 14b are reduced. The sliding bottom cover 23 moves upward so that the volume of the pressure adjustment space 24 increases by the decrease in volume, and the contents of the liquid holding / discharging device 20 can be discharged.

  Although not shown in FIG. 3, the liquid holding / discharging device 20 is on the left hand of the pressurizing / depressurizing device 10, and therefore, the operation of pushing the movable cylinder operating portion 11a is a natural operation to be performed from the right side in the drawing. . For example, the apparatus is held from the right side with four fingers other than the index finger and the palm, and the movable cylinder operation unit 11a is pushed in with the index finger. In this case, the pressurizing chamber vent 11d located on the right side of the movable cylinder operating portion 11a can be naturally closed with the index finger, but the decompression chamber vent 11e located on the left side of the movable cylinder operating portion 11a is blocked with the index finger. Is difficult in natural operation.

  Therefore, when the movable cylinder 11 is pushed downward in the pressurizing mode, the decompression chamber vent hole 11e is in an open state, so that the pressure in the decompression chamber 17 communicating with the movable cylinder 11 is reduced by the downward movement of the movable cylinder 11. Is also unchanged, the movable cylinder 11 can be pushed in easily.

  After the movable cylinder 11 has been pushed in, the index finger is released from the movable cylinder operating portion 11a to release the pressing force, and at the same time, the pressure chamber 14 has a pressure chamber if it can leak from the pressure chamber vent hole 11d. Air can flow in from the vent hole 11d, and the movable cylinder 11 returns to the state shown in FIG.

Next, the mechanism and operation used when switching from the pressure mode to the pressure reduction mode will be described with reference to FIGS.
A groove as shown in FIG. 7 is formed on the outer surface of the movable cylinder 11. The vertical groove shown in FIG. 7A is a pressure reduction mode guide groove 30 for guiding the movement of the movable cylinder 11 in the vertical direction and regulating the range in the pressure reduction mode. Further, a pressurization mode guide groove 31 which is a vertical groove shown in FIG. 7B is provided on the back side of the decompression mode guide groove 30, that is, at a position rotated by 180 ° about the rotation axis of the movable cylinder 11. Yes. Further, a mode switching guide groove 32 is provided so as to connect the decompression mode guide groove 30 and the pressurization mode guide groove 31 and turn around the outer surface of the movable cylinder 11.

  The three guide grooves 30, 31 and 32 shown above are fitted to the protruding guide pins 33 shown in FIG. The guide pin 33 is inserted and fixed so as to penetrate from the outer side surface of the decorative plate 18 to the inner side surface. With such a mechanism, the movable cylinder 11 can move up and down within a restricted range at two predetermined rotational positions that are 180 ° apart, and can be moved by turning between the two locations around the central axis. .

Note that the lower end of the decompression mode guide groove 30 and the lower end of the pressurization mode guide groove 31 are in the same position in the vertical position of FIG. Thereby, when the movable cylinder operation part 11a is not pressed, the position of the movable cylinder operation part 11a can be made the same position.
Further, the decompression mode guide groove 30 extends longer than the pressurization mode guide groove 31. In this way, in the decompression mode, the downward movement of the movable cylinder 11 can be performed with a longer stroke.

  In FIG. 7, two longitudinal grooves are provided at positions rotated 180 ° in the rotation direction of the movable cylinder 11, which are a pressurization mode and a decompression mode, respectively. In addition to these two longitudinal grooves, further longitudinal grooves may be provided. For example, another vertical groove having a different length is provided in the immediate vicinity of the pressure mode guide groove 31. Since this vertical groove is in the immediate vicinity of the pressurization mode guide groove 31, even if it switches to this new vertical groove, it remains in pressurization mode. And since the length of a groove | channel differs from the pressurization mode guide groove 31, the stroke amount changes and it can also obtain the pressurization mode of two types of strokes. That is, it is possible to change the discharge amount per stroke.

  Now, the mode can be switched from the pressurizing mode to the depressurizing mode by the mechanism shown in FIGS. More specifically, the movable cylinder 11 may be rotated 180 ° while grasping the periphery of the movable cylinder operation unit 11a while slightly pressing the movable cylinder operation unit 11a.

  The state after switching to the decompression mode in this way is shown in FIG. In FIG. 5, the decompression chamber vent hole 11e is in a position where it is easy to close with a finger, while the pressurization chamber vent hole 11d is in a position where it is difficult to close with a finger. Therefore, when the movable cylinder operation unit 11a is pushed down in the decompression mode, the decompression chamber vent hole 11e is blocked with a finger, while the pressurization chamber vent hole 11d is opened.

  Further, in synchronization with the rotation of the movable cylinder 11, the fixed piston 13 and the rotation synchronization shaft 15 also rotate 180 °. With this rotation, as shown in FIG. 5, the pressurizing chamber 14 is disconnected from the transmission air passage 16a, while the decompression chamber 17 is in communication with the transmission air passage 16a.

  When pushed into the movable cylinder 11 in this state, the volume of the decompression chamber 17 is increased and a reduced pressure (negative pressure) state is obtained. As shown in FIG. 5, the decompression chamber 17 communicates with the transmission air passage 16a and decompresses the pressure receiving portion that is airtightly connected to the transmission air passage 16a.

  FIG. 6 shows a state where the movable cylinder 11 is completely pushed in the decompression mode. As shown in FIG. 7, since the decompression mode guide groove 30 is longer than the pressurization mode guide groove 31, the movable cylinder 11 can be pushed further down than the state of FIG. 4.

Other operations are the same as those in the pressurizing mode, and thus description thereof is omitted.
Note that when the decompression mode is used and why the decompression mode guide groove 30 is lengthened will be described later.

Next, the operation of the liquid holding / discharging device 20 will be described.
In the pressurization mode, it is possible to push up the sliding bottom cover 23 by pushing in the movable cylinder operation unit 11a of the pressure increasing / decreasing device 10 and discharge the liquid content in the liquid holding space 22 from the discharge unit 21 as described above. As explained.

  The discharge amount at this time is the same as the volume reduction of the pressurizing chamber 14, and the discharge amount can be adjusted by adjusting the pushing amount of the movable cylinder operation portion 11a. In addition, by completely pushing the movable cylinder operation portion 11a, it is possible to always discharge a certain amount.

  When the finger is released after the movable cylinder operating portion 11a is pushed in, the pressure chamber vent hole 11d is opened, so that the upward pressure received by the sliding bottom lid 23 is lost, but the discharge portion 21 is reversed. Since the stop valve 21a is provided and the sliding bottom lid 23 is airtightly slid with the inner wall of the liquid holding space 22, no mixing of air or the like into the liquid holding space 22 from the outside occurs. The sliding bottom lid 23 can hold its position.

  Therefore, it is possible to always prevent air from entering the liquid holding space 22 and to prevent deterioration of the contents such as oxidation.

Here, a preferred structure of the check valve 21a will be described.
Fig.9 (a) is explanatory drawing at the time of using a needle valve as a non-return valve. The needle valve pressure receiving portion 21b has a disk shape, for example, and is slidable in contact with the inner wall of the discharge portion 21 in an airtight manner. An elastic member such as a coil spring is provided on the right hand of the needle valve pressure receiving portion 21b, and pressurizes the needle valve pressure receiving portion 21b in the direction in which the needle valve closes.

  When the sliding bottom lid 23 is pushed upward and the pressure of the liquid content becomes larger than the pressure from the elastic member, the needle valve pressure receiving portion 21b is slid to the right side in the drawing, the valve is opened, and the liquid content is discharged. Is done. By appropriately adjusting the pressure from the elastic member, it is possible to prevent liquid leakage from the discharge unit 21 when the movable cylinder operation unit 11a is lightly pressed by mistake.

  The rear end 21c of this needle valve protrudes from the discharge part 21 to the rear part. If the contents are curable, such as an adhesive, the tip of the discharge unit 21 may be clogged or the liquid may come out poorly. In this case, the needle valve rear end 21c is pinched. The clogging at the tip of the discharge unit 21 can be removed by turning the screw.

  FIG. 9B shows the appearance of the discharge unit 21. An oval cam connected to the needle is provided at the right end. By rotating the cam 90 ° around the cam shaft indicated by the two-dot chain line, the needle is moved in the right direction to force a check. The valve 21a can be opened.

In this open state, if the pressure increasing / decreasing device 10 is set to the pressure reducing mode, it can be used as a suction / discharge device capable of not only discharging but also suctioning.
For example, when a harmful chemical substance is accidentally poured into a groove in a factory, a certain amount of water in the groove is sucked and then discharged into a sample bottle. If this is done in grooves at various locations, the diffusion status of chemical substances can be grasped.

  Alternatively, the liquid product produced in large quantities can be used for the purpose of selling a small amount into small bottles.

  In addition, when using it for the purpose of suction from the beginning, it is possible not to provide the check valve 21a. Further, as shown in FIG. 1, the pressurizing and depressurizing device 10 and the liquid holding and discharging device 20 are not arranged in parallel, and the liquid holding and discharging device 20 in FIG. In other words, it may be used in the same form as a syringe.

Now, it returns to operation | movement of the discharge apparatus of Embodiment 1. FIG.
When the contents are used up, the discharge unit 21 can be removed from the liquid holding space 22, filled with the contents again, and reused as the discharge device 1. At this time, it is necessary to push down the sliding bottom lid 23 raised to the upper part to the lower end.

  However, when pressed down with a finger or the like, it is difficult to apply a uniform force to the entire upper surface of the sliding bottom lid 23. As a result, the sliding bottom lid 23 is provided to tilt or improve sealing performance. There is a risk of damage to the annular projection. In particular, the sliding bottom lid 23 has a dense structure in order to ensure sealing performance. Therefore, it is difficult to regain the original sealing property once it is tilted or even a part of it is damaged even slightly.

  In order to avoid such a concern, the decompression mode of the pressurization / decompression device 10 can be used. If the movable cylinder operation unit 11a is pushed in the decompression mode, the uniform decompression force is applied to the entire sliding bottom cover 23, so that the sliding bottom cover 23 is lowered to the lower end without fear of being tilted or damaged. Can do.

  Moreover, since the stroke amount of the movable cylinder in the decompression mode is moved greatly, the sliding bottom cover 23 can be lowered to the lower end more quickly.

The characteristics of the apparatus according to the first embodiment described above are summarized below.
First, the pressurizing / depressurizing device 10 can perform not only pressurization but also depressurization without using a check valve used in a normal airless pump.

  In the first place, even if a check valve is used, it is not easy to realize the two functions of pressurization and decompression. For example, in order to return the pushed-in movable cylinder to the original position, two check valves may be used instead of the pressurizing chamber vent 11d and the decompression chamber vent 11e. However, in the configuration using such a check valve, the check valve is obstructive in the first place, and the movable cylinder 11 cannot be pushed in. This is because, for example, in the pressurization mode, since there is a check valve used instead of the decompression chamber vent hole 11e, the decompression chamber 17 becomes a sealed isolated space. The same applies to the decompression mode.

  However, in the pressurizing / depressurizing device 10 according to the first embodiment, the two functions of pressurization and decompression can be realized only by devising the opening positions of the pressurizing chamber vent 11d and the decompression chamber vent 11e. It is. This is because the two opening positions are optimized by paying attention to the natural movements of human hands and fingers, which are the power of the pump.

  Further, the movable cylinder 11 is rotated by 180 ° so that the use modes of the two pressure chambers 14 and 17 are switched. By this rotation switching operation, the opening of the pressurizing chamber vent hole 11d and the decompression chamber vent hole 11e is opened. This is because one of the positions is switched from the difficult-to-seal position to the optimum position for sealing.

That is, the two functions of pressurization and depressurization can be realized with a simple configuration because a plurality of components of the pressurization / decompression device 10 according to the first embodiment are closely and organically linked.
Furthermore, by appropriately setting the length of the groove provided on the outer surface of the movable cylinder 11, it is possible to achieve the optimum discharge amount and suction amount according to the purpose of use.

  In addition, the discharge device 1 using the pressurizing and depressurizing device 10 can discharge until the content is used up, with no air mixed into the container, with minimal deterioration of the liquid content. Further, even if the discharge portion is directed downward, that is, upside down, discharge is possible.

  In addition, a check valve between the pump and the container is unnecessary as compared with a normal airless pump type, and the cost can be reduced. And since it is not necessary to temporarily store the contents in the cylinder in the pump, the elastic member of the check valve and the temporarily stored contents do not come into contact with each other, and there is no problem of deterioration of the elastic member. .

  In addition, it has the ease of use that the normal airless pump type has an upper surface operation and that the entire apparatus can be placed on a table or the like.

Then, by forcibly opening the check valve, not only discharge but also suction using the decompression mode, in particular, a certain amount of suction becomes possible.
Then, by using the decompression mode, it can move without fear of breaking the sliding bottom lid 23, so that the contents can be refilled and the apparatus can be reused.

Since the equipment can be reused, it has the effect of minimizing the environmental burden, and the use of the equipment for a long period of time leads to attachment.
Specific applications include foods (soy sauce, olive oil, white dashi, honey, vinegar, wine, etc.), chemicals (disinfectants such as alcohol, liquid pharmaceuticals), medical field, physics and chemistry field, industrial field (acetone, etc.) It can be expected to be used in many fields such as cleaning fluids and paints.

Embodiment 2. FIG.
The pressure-intensifying device according to the second embodiment will be described below with reference to FIG. Note that the description of the same configuration and operation as in the first embodiment will be omitted, and only the differences will be described.

FIG. 10 is a diagram schematically showing the configuration when the movable cylinder 11 is in the return position in the pressurization mode.
The hole provided in the rotation synchronization plate 11b is slidable with the rotation synchronization shaft 15 in an airtight state. Therefore, the rotation synchronization shaft movable space 44a that is the space above the rotation synchronization shaft 15 does not constitute a pressurizing chamber.

The pressurizing chamber 14b is the same space as the pressurizing chamber 14b in the first embodiment, but the cross-sectional area of the pressurizing chamber 14b is remarkably small because the cross-sectional area of the rotation synchronization shaft 15 is large.
Further, since the rotation synchronization shaft movable space leak hole 46 which is a small through hole is opened in the movable cylinder 11 on the back side of the drawing, the rotation synchronization shaft movable space 44a is not a sealed space above the rotation synchronization shaft movable space 44a. Therefore, the movable cylinder 11 can be pushed down.

And since the cross-sectional area of the pressurizing chamber 14b is remarkably small, the volume reduction of the pressurizing chamber 14b per pressing length of the movable cylinder 11 in the pressurizing mode becomes remarkably small.
On the other hand, the configuration of the decompression chamber 17 is the same as that of the first embodiment and has the same size.

  Therefore, when the discharge device is refilled with the contents, the sliding bottom cover can be quickly moved downward as in the first embodiment, and the discharge amount can be controlled very delicately during discharge.

Embodiment 3 FIG.
The pressure-intensifying device according to the third embodiment will be described below with reference to FIG. Note that the description of the same configuration and operation as in the first embodiment will be omitted, and only the differences will be described.

FIG. 11 is a diagram schematically showing the configuration in the pressurization mode corresponding to FIG.
In this embodiment, a new elastic member 34 is provided in the pressurizing chamber 14a, and the fixed piston 16 is moved in the vertical direction by moving the fixed shaft 16 in the vertical direction, so that the volumes of the pressurizing chamber 14 and the decompression chamber 17 are increased. Change.

  In the pressurizing mode, as shown in FIG. 11, the fixed shaft 16 is pushed up while closing the pressurizing chamber vent hole 11d with a finger. On the other hand, in the depressurizing mode, the fixed shaft 16 is closed while closing the decompression chamber vent hole 11e with a finger. If pushed up, it functions as a pressure increasing / decreasing device as in the first embodiment.

Embodiment 4 FIG.
The pressure-intensifying device according to the fourth embodiment will be described below with reference to FIG. Note that the description of the same configuration and operation as in the first embodiment will be omitted, and only the differences will be described.

FIG. 12 is a diagram schematically showing the configuration in the pressurization mode corresponding to FIG.
In this embodiment, the fixed shaft 16 is separated, and an airtight rotating mechanism 35 is provided in the middle so that the upper portion 16b of the fixed shaft 16 can rotate.

By doing so, it is possible to switch between the pressurizing mode and the depressurizing mode by rotating the upper portion 16 b of the fixed shaft 16.
Other methods are also conceivable for switching between the pressurizing mode and the depressurizing mode. For example, an electromagnetic valve that can be operated from the outside may be provided near the lower portion of the rotary piston 13 in the transmission air passage 16a.

Embodiment 5 FIG.
In the ejection device according to the fifth embodiment, the liquid holding space 22 and the sliding bottom lid 23 can be removed integrally. A container in which the liquid holding space 22 and the sliding bottom lid 23 are integrated can be attached and fixed to the pressure adjusting space 24 in a hermetic manner by screwing or the like at the lower part thereof. Further, it can be airtightly attached and fixed at the upper part of the container in the same manner as the discharge part 21.

That is, various merit arises by selling what filled the contents into the container which united the liquid holding space 22 and the sliding bottom cover 23. FIG.
For example, in pharmaceuticals and the like, “disposable” may be a merit because importance is placed on hygiene. In the case of such an application, the product is sold in a state where the contents are previously packed in a container in which the liquid holding space 22 and the sliding bottom lid 23 are integrated, and the sealing performance is improved by setting the product in the apparatus according to the present invention. Arbitrary quantity or fixed quantity discharge becomes possible with keeping.

In addition to hygiene, it is in line with the modern values of disposable culture and efficiency. On the other hand, the pressure regulator and the discharge section can be reused, so the environmental load is not high.
In particular, natural cosmetics (cosmetics) are prone to corruption, and are deteriorated by being stored in a warehouse or displayed for a long time, so they are not suitable for store sales and mass production. It was difficult.

  In addition, such products have a short use period (best-before period) after opening, which is also a cause of hindering the spread. Therefore, the liquid holding space 22 and the sliding bottom lid 23 are sold in a state in which the contents are packed in advance, and set in the apparatus according to the present invention, thereby extending the period of use after opening. It is also possible to promote the spread to the general public, promote cost reduction by mass production, and further spread and penetration can be expected.

DESCRIPTION OF SYMBOLS 10 Pressurization / decompression device 11 Movable cylinder 11a Movable cylinder operation part 11b Rotation synchronizing plate 11c Movable cylinder bottom part 11d Pressure chamber vent 11e Depressurization chamber vent 12 Elastic member 13 Fixed piston 14, 14a, 14b Pressure chamber 15 Rotation synchronization shaft DESCRIPTION OF SYMBOLS 15a Pressurization chamber connection path 16 Fixed shaft 16a Transmission ventilation path 17 Decompression chamber 17a Decompression chamber connection path 18 Decorative plate 20 Liquid holding discharge device 21 Discharge part 21a Check valve 21b Needle valve pressure receiving part 21c Needle valve rear end 22 Liquid retention space 23 Slide bottom cover 24 Pressure adjustment space 30 Pressure reduction mode guide groove 30 Pressure mode guide groove 30 Switching guide groove 33 Guide pin 44a Rotation synchronization axis movable space 46 Rotation synchronization axis movable space leak hole

Claims (12)

A piston,
A cylinder capable of linear movement relative to the piston;
A pressurizing chamber obtained by dividing the cylinder into two by the piston along the direction in which the cylinder can move linearly, and a decompression chamber;
A communication vent path connected to the pressurization chamber or the decompression chamber in communication and capable of transmitting a pressure change to the pressure receiving portion;
A switching mechanism for switching the connection between the transmission air passage and the pressurizing chamber or the decompression chamber;
An elastic body that gives elastic restoring force in the opposite direction along the relative linearly movable direction to the piston and the cylinder;
An operation unit that changes the relative position of the piston and the cylinder along the direction in which the relative linear movement is possible, and changes the volumes of the pressurization chamber and the decompression chamber in opposite phases;
A pressure-reducing device comprising:
In the above cylinder,
A pressurizing chamber communication pipe communicating with the pressurizing chamber;
A pressurizing chamber leak hole provided at the other end different from the pressurizing chamber of the pressurizing chamber communication pipe;
A decompression chamber communication pipe communicating with the decompression chamber;
A decompression chamber leak hole provided at the other end different from the decompression chamber of the decompression chamber communication pipe;
Equipped with a,
In the pressurization mode, the transmission mechanism is communicated with the pressurization chamber by the switching mechanism, and the cylinder is moved relative to the piston while closing the pressurization chamber leak hole,
In the decompression mode, the transmission mechanism and the decompression chamber communicate with each other by the switching mechanism, and the cylinder is moved relative to the piston while closing the decompression chamber leak hole.
Pressurization device comprising a call. A linearly movable cylinder,
A fixed piston that is divided into a pressurizing chamber and a decompression chamber in the linearly movable direction of the cylinder and is fixed in the linearly movable direction;
A communication vent path connected to the pressurization chamber or the decompression chamber in communication and capable of transmitting a pressure change to the pressure receiving portion;
A switching mechanism for switching the connection between the transmission air passage and the pressurizing chamber or the decompression chamber;
An elastic body that gives elastic restoring force to the cylinder in a predetermined direction along the movable direction;
A pressure-reducing device comprising:
In the above cylinder,
It is provided at one end along the linear movable shaft and can be pressed in a direction opposite to the elastic restoring force direction of the elastic body, and the pressurizing chamber and the depressurizing chamber as the cylinder moves by the pressing operation. An operation unit for changing the volume of the battery in an opposite phase;
A pressurizing chamber communication pipe communicating with the pressurizing chamber;
The other end different from the pressurizing chamber of the pressurizing chamber communication pipe, and a pressurizing chamber leak hole provided in the vicinity of the operation section;
A decompression chamber communication pipe communicating with the decompression chamber;
The other end different from the decompression chamber of the decompression chamber communication pipe, the decompression chamber leak hole provided in the vicinity of the operation unit,
The pressurizing / depressurizing device according to claim 1, comprising: The cross-sectional area orthogonal to the linearly movable direction of the cylinder of the pressurizing chamber is smaller than the cross-sectional area orthogonal to the linearly movable direction of the cylinder of the decompression chamber. Pressure-reducing device. The cylinder and the fixed piston can rotate synchronously around a rotation axis parallel to the linearly movable direction of the cylinder,
The cylinder is linearly movable at two rotational positions around the rotational axis,
The pressure-reducing device according to claim 2 or 3, wherein the switching mechanism performs a switching operation by selecting one of the two rotational positions. The pressurization chamber leak hole and the decompression chamber leak hole are in a perspective relationship from one end in a plane perpendicular to the linearly movable direction of the cylinder in the operation unit,
The pressure-reducing device according to any one of claims 2 to 4, wherein the perspective relationship is reversed by the switching operation. A mechanism for setting a linearly movable range of the cylinder for each state selected by the switching mechanism;
The position of the cylinder where the volume of the pressure chamber is maximized is the same position in the two selected states,
The linearly movable range when the transmission air passage is connected to the pressurizing chamber is different from the linearly movable range when the transmission air passage is connected to the decompression chamber. The pressurization / decompression device according to any one of claims 2 to 5.   The discharge apparatus which can discharge the liquid substance using the pressurization / decompression apparatus of any one of Claim 1 to 6. The bottom lid of the container that accumulates the contents has a sliding bottom lid that changes the inner volume of the container by sliding on the inner wall of the container,
The discharge device according to claim 7, wherein the sliding bottom cover is a pressure receiving portion that receives a pressure change transmitted from the pressure increasing / decreasing device via the transmission air passage. The discharge device according to claim 7 or 8, wherein the discharge portion includes a check valve. The discharge device according to claim 9, wherein the check valve is a needle valve.   A suction / discharge device capable of sucking and discharging a liquid material using the pressure-increasing / depressurizing device according to claim 1. The bottom lid of the container that accumulates the contents has a sliding bottom lid that changes the inner volume of the container by sliding on the inner wall of the container,
The suction / discharge device according to claim 11, wherein the sliding bottom cover is a pressure receiving portion that receives a pressure change transmitted from the pressure increasing / decreasing device via the transmission air passage.