JP2005022652A - Discharge flow velocity controlling container - Google Patents

Discharge flow velocity controlling container Download PDF

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Publication number
JP2005022652A
JP2005022652A JP2001242827A JP2001242827A JP2005022652A JP 2005022652 A JP2005022652 A JP 2005022652A JP 2001242827 A JP2001242827 A JP 2001242827A JP 2001242827 A JP2001242827 A JP 2001242827A JP 2005022652 A JP2005022652 A JP 2005022652A
Authority
JP
Japan
Prior art keywords
contents
discharge
flow rate
passage
rate control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2001242827A
Other languages
Japanese (ja)
Inventor
Tadashi Hagiwara
忠 萩原
Original Assignee
Tadashi Hagiwara
忠 萩原
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tadashi Hagiwara, 忠 萩原 filed Critical Tadashi Hagiwara
Priority to JP2001242827A priority Critical patent/JP2005022652A/en
Priority claimed from KR10-2004-7001953A external-priority patent/KR20040023734A/en
Publication of JP2005022652A publication Critical patent/JP2005022652A/en
Application status is Pending legal-status Critical

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Abstract

In spite of a simple structure, the flow rate control prevents inadvertent discharge and the contents in the discharge pipe are drawn into the container body, so that the contents stay in the pipe and solidify. Providing liquid containers without any problems.
In a liquid container having a discharge port for discharging the contents, the discharge path has an opening area that is sealed by the surface tension of the contents under normal pressure and has a flow velocity during discharge. It is equipped with a narrow passage that demonstrates the control function.
[Selection] Figure 1

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a liquid container that is pressed by pressurizing a container main body by hand when discharging contents (liquid) from the liquid container.
[0002]
[Prior art]
Conventionally, pump-type resin bottles have been widely used as liquid containers for detergents and the like. This is provided with a hand-pumped pump in the upper opening of the resin bottle container body, and when necessary, the pump is pushed by hand to discharge the contents.
[0003]
The pump is a so-called plunger pump. When the hand pushing part is pushed, the contents staying in the pump are pushed out from the discharge port, and when the hand is released, the hand pushing part is pushed back by the return spring and the contents from inside the container body. It is a structure that sucks up. Normally, a check ball is provided in the pump, and this serves as a check valve to prevent the contents once sucked into the pump from flowing back into the container body again. Also. A thin tube is provided at the lower end of the pump body, and the contents are sucked up from the bottom of the container body. This container is often used for relatively viscous liquids such as detergents and shampoos, and is an extremely popular container.
[0004]
[Problems to be solved by the invention]
However, although the pump is technically possible with a single material such as a return spring made of metal, it is not practical due to cost problems. However, as the awareness of environmental conservation increases socially, the problem of garbage cannot be ignored.
[0005]
In addition, since a check valve for preventing backflow is provided in the pump, the content stays in the pipe from the pump to the discharge port and solidifies, and the content solidified at the next discharge There was a problem of jumping out.
[0006]
Accordingly, the liquid container of the present invention solves the above-described conventional problems and can be formed of a single material and prevents inadvertent discharge by flow rate control despite a simple structure. At the same time, since the contents in the discharge pipe are drawn into the container main body, the liquid container is provided in which the contents do not stay and solidify in the pipe.
[0007]
[Means for Solving the Problems]
That is, the discharge flow rate control container of the present invention is a liquid container provided with a discharge path for discharging the contents, and the discharge path has an opening area to the extent that the contents are sealed by the surface tension of the contents under normal pressure. When the contents are discharged, the flow rate of the contents passing through the flow rate control path once becomes zero, and the main path of the discharge path provided on the outlet side of the flow rate control path is satisfied. After the discharge process is completed, the contents in the discharge path are sucked into the container body so that the contents do not stay in the discharge path under normal conditions. is there.
[0008]
In addition, the discharge flow rate control container of the present invention includes a cover member for isolating the flow rate control path in the container body between the flow rate control path and the container body, and has a desired capacity inside the cover member. A space is provided, and this space and the container main body are communicated only by a thin tube, and the liquid pressure in the container does not directly act on the flow rate control passage. It is also characterized by the fact that it does not extend to.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the discharge flow rate control container of the present invention will be described in detail.
[0010]
[Example 1]
FIG. 1 is a perspective view showing a discharge flow rate control container of the present invention. An upper part of the container body 1 is constituted by a discharge port cap 3 having a discharge port 2 and a pressing lid 4 for fixing a discharge pipe 5 in which the discharge port cap 3 is fitted to the container body 1.
[0011]
FIG. 2 is an enlarged cross-sectional view of a main part near the discharge port. There is an opening 6 at the top of the bottle-shaped container body 1 and a discharge pipe 5. The discharge pipe 5 has a collar 7 mounted on the end face of the opening 6 of the container body 1 and is fixed to the container body 1 by a presser lid 4 with a screw. The container body 1 is formed of a relatively flexible material that is flexible, such as a synthetic resin. More specifically, a synthetic resin material such as polypropylene, polyethylene, or a laminated tube is preferably used.
[0012]
A cover member 8 that covers a portion below the collar 6 of the discharge pipe 5 is provided so as to isolate the discharge pipe 5 within the container body, and a narrow tube 9 is inserted at the lower end thereof. . There is a space 10 having a desired capacity between the cover member 8 and the discharge pipe 5, and this space and the inside of the container body communicate with each other only by this thin tube 9. The lower end of the thin tube 9 reaches the bottom of the container body as shown in FIG. This is to suck up the contents from the bottom.
[0013]
With such a configuration, the liquid pressure in the container does not directly act on the micro passage 16 described later, and the container internal pressure is attenuated by the pipe line resistance of the thin tube 9 and the inner space 10 ( In the normal state, there is no retention of the contents), so that even if the container body 1 is inadvertently strongly pressed and the internal pressure suddenly rises, the contents will not be ejected from the discharge port 2. Further, even when the container body 1 is tumbled or laid down, the lower end of the thin tube 9 comes out above the liquid surface, so that the pressure of the contents does not apply to the minute passage 16, and neither ejection nor leakage occurs.
[0014]
As shown in FIG. 3 (a), the discharge pipe 5 is formed in a shape having a collar 7 so as to be adapted to the opening 6 of the container, and has a main passage (hereinafter referred to as a main passage) 11 in the center. It is a tubular member. As shown in FIG. 3, the main passage 11 does not penetrate the upper end, and the upper end has a discharge port 12 on the side surface, and the discharge port cap 3 is fitted therein. The discharge port cap 3 is rotatably fitted and can be adjusted to a position where the inlet 13 of the discharge passage and the discharge port 12 are adapted. Therefore, the discharge port cap 3 is rotated when not in use. It is possible to prevent the contents from appearing by canceling the adaptation of both. On the other hand, the lower end is closed by the bottom lid 14. A small cross-sectional hole (hereinafter referred to as a micro-passage) 16 is provided as a micro-passage in a direction perpendicular to the main passage 11 at the joint between the lower end surface 15 of the discharge pipe 5 and the bottom cover 14. The micro passage 16 is closed by the surface tension of the liquid to be stored, or is in a so-called vapor lock state when bubbles are mixed, and does not easily pass under normal pressure. Desirably, it is determined according to the surface tension and viscosity of the liquid, but a water-like low viscosity fluid is preferably 0.3 mm to 1.5 mm.
[0015]
And this micro channel | path 16 has the length for the thickness of the discharge pipe 5 in FIG. Moreover, the cross section can select freely, such as a circle, a triangle, and a square, and a shape is not limited.
[0016]
Although a method of drilling the micro passage 16 with a drill or the like is conceivable, it is technically difficult. In this embodiment, a groove 17 is formed on the lower end surface 15 of the discharge pipe 5 as shown in FIG. The bottom lid 14 is closed so as to form a tubular passage. With such a configuration, the minute groove 17 can be molded, which is convenient for processing.
[0017]
Moreover, the micro channel | path 16 is provided in the position which opposes, as shown in FIG.3 (b). As shown in FIG. 4, the content (liquid) discharged from the micro passage 16 into the main passage 11 collides with the center of the main passage 11 so that the discharge flow velocity once becomes 0 (zero). It is to do. By doing so, the contents are not discharged from the discharge port 2 at the same flow rate that passes through the micro passage 16.
[0018]
Furthermore, as the diameter of the micro passage 16 is reduced, the amount of contents passing through the micro passage 16 can be limited. This means that it takes time until the main passage 11 is filled with the contents. At the same time, it becomes insensitive to the external pressure applied to the container body 1 (the force pressed by the finger). That is, the adjustment of the contents discharged from the discharge port 2 depends on the length of the pressing time rather than the adjustment of the force for pressing the container body 1, and the discharge control is extremely easy. The discharge speed depends on the passage flow velocity of the micro passage 16 depending on the magnitude of the external pressure (force that presses the container body 1), but whether the emphasis is placed on the time or force for pressing the container body 1 is important for controlling the discharge. It can be changed by changing the effective opening area (hole diameter) of 16. By appropriately changing and balancing the size of the micro passage 16 according to the degree of flexibility of the container body 1, it is possible to finely adapt it according to the properties of the contents stored in the container and the discharge conditions.
[0019]
When using the liquid container of the first embodiment configured as described above, as shown in FIG. 5, if pressure is applied by pressing the container body 1 with a finger, the container internal pressure increases due to deformation of the container body 1. As shown in FIG. 6, the contents (liquid) enter the space 10 of the cover member 8 from the bottom of the container body 1 through the thin tube 9 and flow into the micro passage 16 as shown in FIG. While being pushed out from the passage 16 toward the center of the main passage 11, they are discharged and collide at the same speed, and the speed once becomes zero. Then, without discharging from the discharge port 2 suddenly, the discharge port overflows after filling the main passage 11 while filling the inner wall of the main passage 11 due to surface tension and gradually filling the main passage 11 as shown by the broken line in FIG. 2 is discharged.
[0020]
Since the discharge speed (flow velocity) once becomes 0 (zero) in front of the discharge port 2, the outflow of the contents from the discharge port 2 is extremely slow, and even if inadvertent external pressure is applied to the container body 1, There is no jet from the discharge port 2, and the fine adjustment of the discharge amount can be performed very easily.
[0021]
Although the number of the micro passages 16 can be one, it is preferable to provide a plurality of micro passages 16 at opposing positions. This is because as the distance from the micro passage 16 to the position where the flow velocity becomes 0 (zero) is shorter, the resistance becomes more resistance, and the ejection can be further prevented. When the number of the micro passages 16 is an odd number, it may be arranged radially so that the contents ejected from all the micro passages collide almost at the center.
[0022]
In addition, the micro channel | path 16 can also consider the form as shown in FIG. That is, when the velocity in the inflow direction from the microchannel 16 is lost (becomes zero), the content flowing in from the microchannel 16 collides with the wall and the content flowing in oppositely. This includes cases where you are forced to change direction. For example, in FIG. 7, (a) is a case where the contents flowing in from the minute passage 16 on the side wall 18 collide with the inner wall facing each other, (b) The content flows from the minute passage 16 on the side wall 18 in a direction sandwiching the collision wall 19 and collides with the collision wall 19, and (c) is from the minute passage 16 provided at the non-opposing position of the side wall 18. The inflowing contents collide with the inner wall facing each other at a non-perpendicular angle. In this case, the contents flow in a direction that changes along the inner wall of the main passage 11, so that a vortex is generated in the main passage 11. (D) is the same as (c) in the minute passage 16 except that the wall 20 on which the inflowed contents collide is provided in the front inner wall of the inflow destination. The numeral 1 attached to the figure number in the figure indicates a longitudinal sectional view, and 2 indicates a transverse sectional view at the position of the minute passage. (E) forms the micro channel | path 16 by providing a notch in the opposing position of the lower end angle | corner of the discharge pipe 3. FIG. In this case, as shown in (e) -2, the contents flow into the main passage 11 substantially along the bottom surface. (E) -3 is a cross-sectional view at the position of the minute passage. (F) is a case where the micro passage 16 is provided by shifting the position vertically from the opposite side wall, and (g) is a case where the micro passage 16 is provided by shifting the position vertically in the case of (b) above. (H) includes a minute passage 16 that flows obliquely from the side wall 18 toward the bottom corner of the main passage 11, and (I) illustrates a minute flow that obliquely flows from the sidewall 18 or the bottom surface toward the inner wall. The case where the channel | path 16 is provided is shown. In the case of (I), it is desirable to provide a collision wall 21 that prevents the contents from flowing upward when the contents collide with the inner wall as shown in the figure.
[0023]
And if discharge is completed, if a hand will be released from the container main body 1, the inside of a container main body will become a negative pressure with the restoring force by the elasticity of the container main body 1. FIG. Then, as shown in FIG. 8, the contents in all the passages from the discharge port 2 to the thin tube 9 are pulled back by the negative pressure and returned into the container body 1. Originally, if the tube has a diameter of about this minute passage, the liquid stays due to capillary action, but in this embodiment, the liquid is pulled back into the container body 1 without staying due to the negative pressure in the container body. Even in this case, exactly, the contents remain at the lower end of the narrow tube 9 by a capillary phenomenon according to a balanced state of the atmospheric pressure and the internal pressure of the container.
[0024]
As a result, since the contents are not normally retained in most of the discharge path from the discharge port 2 to the lower end of the thin tube 9, the contents in the container body 1 are discharged when the container body 1 is pushed by hand. Although it takes some time to reach the outlet 2, the contents do not spout against an inadvertent external pressure applied to the container body 1.
[0025]
In addition, since the contents remain in the discharge path and do not harden, the contents fixed to the discharge port 2 are not ejected even when the contents are used once and then used again. Furthermore, dripping can be prevented.
[0026]
The diameter of the discharge port 2 may be a diameter that allows the contents to remain under normal pressure and not drop by capillary action. For example, a water-like low-viscosity liquid is preferably about 1.5 mm to 3 mm. What is necessary is just to change suitably according to the property of the contents, and the purpose of use of the container.
[0027]
[Example 2]
FIG. 9A is a front longitudinal sectional view of the discharge pipe 5 showing a second embodiment of the discharge flow rate control container of the present invention, and FIG. 9B shows the bottom end face of the discharge pipe 5. The method for attaching the discharge pipe 5 to the upper opening 6 of the container body 1 is the same as in the first embodiment. In the first embodiment, the case where the micro passage 16 is tubular is shown, but this embodiment shows the case where the micro passage is a gap.
[0028]
As shown in FIG. 9A, the main passage 11 passes through, and a cap 22 is fitted into the bottom end face 15. On the bottom end face 15, a protrusion or a raised portion (hereinafter referred to as a protrusion) 24 having a height corresponding to the gap is formed so as to form a gap passage 23 that becomes a minute passage between the end face 15 and the inner bottom face of the cap 22. Yes. It is desirable that the height of the gap passage 23 is about a few microns and has a cross-sectional area equivalent to that of the micro passage 16 in the previous embodiment. The cap 22 is provided with a lateral hole 25 having an opening area larger than the opening area of the gap passage 23 at a position matching the gap passage 23 on the side surface thereof. The cap 22 is fitted so that the inner bottom surface thereof is in close contact with the projection 24 of the discharge pipe 5, and the contact portion is integrated by welding or bonding. Then, the contents flow into the main passage 11 so as to enter the gap passage 23 and ooze out from the lateral hole 25 of the cap 22. In this case, if the flow rate of the content passing through the gap passage 23 is high, the flow rate can be controlled by the configuration in which the content flowing in from the opposite position in the main passage 11 collides, and the jet from the discharge port 2 In addition, the fine adjustment of the dropping can be easily performed.
[0029]
In this case, when a plurality of gap passages 23 are provided in a radial pattern, the pairs of gap passages 23 have different cross-sectional areas (or widths) and the cap 22 is located at the bottom of the discharge pipe 5. When the cap 22 is rotated so as to be able to rotate without being welded or adhered to the end face (projection 24), it is possible to select the gap passage 23 that matches the lateral hole 25. And it can also be changed stepwise by the number of gap passage pairs.
[0030]
In addition, even when there is a pair of narrow (gap) passages, the cap 22 can be rotated so that the horizontal hole 25 can be moved to a position where there is no gap passage 23 so that the fit between the horizontal hole 25 and the gap passage 23 can be released. Thus, it can function as an inner plug that prohibits discharge. If the gap height of the gap passage 23 is varied in the width direction, the opening area can be arbitrarily changed according to the state of compatibility with the lateral hole 25, and discharge control can be performed steplessly.
[0031]
[Example 3]
FIG. 10 is a front longitudinal sectional view of the discharge pipe 5 showing a third embodiment of the discharge flow rate control container of the present invention. The method for attaching the discharge pipe 5 to the upper opening 6 of the container body 1 is the same as in the first embodiment.
[0032]
As shown in FIG. 10, the main passage 11 of the discharge pipe 5 penetrates the upper and lower ends, and the diameter of the main passage 11 is enlarged near the lower end. A plug 27 that fits into the enlarged portion 26 is provided. As shown in FIG. 11A, the stopper 27 is provided with a longitudinal groove 28 that forms a micro passage on its side surface. The plug 27 is dimensioned to have a slight gap when the upper end of the plug 27 abuts against the step of the enlarged portion 26 of the discharge pipe 5. In this case, it is desirable that the longitudinal groove 28 has substantially the same cross-sectional area as the cross-sectional area of the tubular microchannel 16 of the above-described embodiment.
[0033]
That is, the vertical groove, that is, the minute passage 28 is formed in parallel with the main passage 11 from the lower end of the discharge pipe 5 and then reaches the main passage 11 through the gap.
[0034]
In FIG. 11B, a vertical groove 28 is formed in the stopper 27, and a lateral groove 29 is further provided at the upper end. In this case, the transverse groove 29 may be a minute passage, and the cross-sectional area of the longitudinal groove 28 may be larger than that of the transverse groove 29. If strong pipe resistance is required, both the longitudinal groove 28 and the transverse groove 29 may be minute passages. Of course. In the figure, reference numeral 30 denotes a recess forming a liquid collision chamber. It is good to have this dent. Further, the present invention is applicable to all embodiments of the present invention.
[0035]
In use in the case of the above configuration, the content (liquid) pressurized by pushing the container body 1 flows into the vertical groove 28 as shown in FIG. 5, but the pipe resistance is large. In addition, the end of the longitudinal groove 28 is refracted at a right angle, so that the resistance is further increased. Further, since the gap from the same point to the main passage 11 is a gap or a minute path, further resistance is added. The liquid that has passed through the gap or / and the minute passage in this manner further collides in the main passage 11 and the flow velocity once becomes zero. And without discharging suddenly from the discharge port 2, the discharge port overflows after filling the inner wall of the main passage 11 due to surface tension and filling up gradually as shown by the broken line in the main passage 11 of FIG. 4. 2 is discharged.
[0036]
【The invention's effect】
According to the liquid container of the present invention configured as described above, any flexible liquid container can be applied to various containers, and the discharge amount of the contents can be adjusted without difficulty.
[0037]
Since the contents do not stay in the discharge path in the normal state, the contents are not discharged even if the container body is inadvertently pressurized.
[0038]
In addition, at the end of discharge, the contents in the discharge path are drawn into the container body due to the negative pressure in the container body caused by the resilience of the container body, so that the contents do not stay and stick to the discharge port, The fixed contents will not be ejected the next time it is discharged.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a discharge flow rate control container of the present invention.
FIG. 2 is an enlarged cross-sectional view of a main part in the vicinity of the discharge port.
3A is a longitudinal sectional view showing a discharge pipe, and FIG. 3B is a bottom view.
FIG. 4 is an enlarged cross-sectional view of a main part showing a minute passage.
FIG. 5 is a perspective view showing a use state.
FIG. 6 is a longitudinal sectional view of a main part showing a use (discharge) state.
FIG. 7 is a longitudinal sectional view of a main part showing a use (suction) state.
FIGS. 8A to 8I are cross-sectional views showing a configuration pattern of a micro passage. FIGS.
9A is a longitudinal sectional view and FIG. 9B is a bottom view showing a discharge pipe of a second embodiment.
FIG. 10 is a longitudinal sectional view of a discharge pipe showing a third embodiment.
FIGS. 11A and 11B are perspective views showing a configuration example of a stopper. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Container body 2 Discharge port 3 Discharge port cap 4 Holding lid 5 Discharge pipe 6 Opening part 7 Collar 8 Cover member 9 Narrow pipe 10 Space 11 Main passage 12 Discharge port 13 Passage inlet 14 Bottom lid 15 Bottom end surface 16 Micro passage 17 Groove 18 Side wall 19, 20, 21 Collision wall 22 Cap 23 Gap passage 24 Protrusion 25 Horizontal hole 26 Enlarged portion 27 Plug 28 Vertical groove 29 Horizontal groove 30 Dimple

Claims (2)

  1. In a liquid container equipped with a discharge path for discharging the contents, the discharge path is provided with a flow rate control passage having an opening area enough to block the contents by the surface tension of the contents under normal pressure. At the time of discharge, the flow rate in the direction of the passage of the contents that have passed through the flow rate control passage once becomes zero, and is discharged from the discharge port after filling the main passage of the discharge path provided on the outlet side of the flow rate control passage, A discharge flow rate control container characterized in that the contents do not stay in the discharge path in a normal state by sucking the contents in the discharge path into the container body after completion of the discharge process.
  2. A cover member is provided between the flow rate control passage and the container body to isolate the flow rate control passage within the container body, and a space having a desired capacity is provided inside the cover member. 2. The apparatus according to claim 1, wherein the fluid pressure in the container does not directly act on the flow rate control passage, and the internal pressure of the container body is attenuated by the internal resistance of the narrow tube and does not directly reach the flow rate control passage. Discharge flow rate control container.
JP2001242827A 2001-08-09 2001-08-09 Discharge flow velocity controlling container Pending JP2005022652A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001242827A JP2005022652A (en) 2001-08-09 2001-08-09 Discharge flow velocity controlling container

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP2001242827A JP2005022652A (en) 2001-08-09 2001-08-09 Discharge flow velocity controlling container
KR10-2004-7001953A KR20040023734A (en) 2001-08-09 2002-06-21 Container with discharge flow velocity mechanism
CNA028154045A CN1538923A (en) 2001-08-09 2002-06-21 Contaner with discharge flow velocity mechanism
US10/486,223 US20040245290A1 (en) 2001-08-09 2002-06-21 Container with discharge flow velocity mechanism
CA 2457350 CA2457350A1 (en) 2001-08-09 2002-06-21 Container with discharge flow velocity mechanism
EP20020736175 EP1426302A1 (en) 2001-08-09 2002-06-21 Container with discharge flow velocity mechanism
PCT/JP2002/006254 WO2003016163A1 (en) 2001-08-09 2002-06-21 Container with discharge flow velocity mechanism
TW91123334A TW573241B (en) 2001-08-09 2002-10-09 Container with discharge flow velocity mechanism

Publications (1)

Publication Number Publication Date
JP2005022652A true JP2005022652A (en) 2005-01-27

Family

ID=34179429

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001242827A Pending JP2005022652A (en) 2001-08-09 2001-08-09 Discharge flow velocity controlling container

Country Status (1)

Country Link
JP (1) JP2005022652A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012251440A (en) * 2011-05-31 2012-12-20 Yoshino Kogyosho Co Ltd Pump device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012251440A (en) * 2011-05-31 2012-12-20 Yoshino Kogyosho Co Ltd Pump device

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