WO2015143828A1 - 防松脱乳液泵 - Google Patents

防松脱乳液泵 Download PDF

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Publication number
WO2015143828A1
WO2015143828A1 PCT/CN2014/084889 CN2014084889W WO2015143828A1 WO 2015143828 A1 WO2015143828 A1 WO 2015143828A1 CN 2014084889 W CN2014084889 W CN 2014084889W WO 2015143828 A1 WO2015143828 A1 WO 2015143828A1
Authority
WO
WIPO (PCT)
Prior art keywords
vertical tooth
vertical
mouthpiece
tooth piece
indenter
Prior art date
Application number
PCT/CN2014/084889
Other languages
English (en)
French (fr)
Inventor
丁要武
Original Assignee
丁要武
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 丁要武 filed Critical 丁要武
Priority to DE112014006531.5T priority Critical patent/DE112014006531B4/de
Priority to JP2016559572A priority patent/JP6410837B2/ja
Priority to US15/127,171 priority patent/US10625287B2/en
Publication of WO2015143828A1 publication Critical patent/WO2015143828A1/zh

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005Components or details
    • B05B11/0089Dispensing tubes
    • B05B11/0091Dispensing tubes movable, e.g. articulated on the sprayer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001Piston pumps
    • B05B11/1023Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042Components or details
    • B05B11/1043Sealing or attachment arrangements between pump and container
    • B05B11/1046Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container
    • B05B11/1047Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container the pump being preassembled as an independent unit before being mounted on the container
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042Components or details
    • B05B11/1059Means for locking a pump or its actuation means in a fixed position
    • B05B11/106Means for locking a pump or its actuation means in a fixed position in a retracted position, e.g. in an end-of-dispensing-stroke position

Definitions

  • the present invention relates to an emulsion pump, and more particularly to an emulsion pump capable of preventing loosening.
  • the emulsion pump is in particular a push-type lotion pump. Background technique
  • a lotion pump is mounted on the container opening of a bottled product such as a body wash, shampoo, etc., and the user can pump the product in the container out of the container for use by pressing the lotion pump.
  • Figures 16a and 16b show a currently used lotion pump.
  • Fig. 16a is a cross-sectional view showing the internal configuration of the lotion pump.
  • the lotion pump 100 includes a ram 110 having an outlet, a mouthpiece 120, and a cylinder 130.
  • the mouthpiece 120 is threadedly coupled to the opening of the container (not shown) to thereby connect the lotion pump 100 to the container.
  • One end of the cylinder 130 is connected to the mouthpiece 120, and the other end extends into the interior of the container.
  • a piston rod 140 having one end fixedly coupled to the ram 120 and the other end extending into the interior of the cylinder 130.
  • the interior of the piston rod 140 is in fluid communication with the outlet of the ram 110.
  • a first spring seat 151 is disposed at a lower portion of the piston rod 140, and correspondingly, a second spring seat 152 is disposed in the cylinder 130, and the compression spring 150 is supported between the first spring seat and the second spring seat 152.
  • the compression spring 150 applies an upward biasing force to the piston rod 140.
  • the indenter 110 and the mouthpiece 120 are respectively provided with complementary inner and outer threads, and the indenter 110 can be fixed in the locked position by the engagement between the inner and outer threads.
  • the ram 110 By rotating the ram 110 in the opening direction (counterclockwise) as indicated by the arrow in Fig. 16b, the ram 110 can be transitioned from the locked position to the open position. In the open position, the piston rod 140 moves upwardly under the biasing force of the compression spring 150, thereby causing the ram 110 to move upward.
  • a first valve 160 is provided on the cylinder 130, and a piston head 170 is disposed at the bottom of the piston rod 140, which forms a one-way valve with the corresponding piston.
  • the first valve 160 is also a one-way valve and flows in the same direction as the one-way valve at the piston head 170.
  • the piston rod 140 moves upward together with the indenter 110 under the upward biasing force of the spring, and the space between the first valve 160 and the piston rod 140 expands.
  • the piston moves downward relative to the piston head 170, thereby closing the corresponding one-way valve.
  • the pressure between the first valve 160 and the piston rod 140 drops, and under the pressure difference, the first valve 160 is opened, so that the liquid in the container flows into the space between the first valve 160 and the piston rod 140. .
  • the existing lotion pump shows some problems. Specifically, in the process of transporting the bottled product by express delivery, the tubular nozzle of the lotion pump is subjected to the torque due to collision, dropping, etc., thereby rotating the indenter. If the ram is rotated in the counterclockwise opening direction, it is possible to cause the ram to be turned to the open position to bounce. At this time, if the indenter is subjected to downward pressure, the liquid in the container will be pumped out.
  • the thread connection direction between the mouthpiece and the container is the same as the thread connection direction between the pressure head and the mouthpiece, that is, when the pressure nozzle is subjected to the torque to rotate the pressure head in the counterclockwise opening direction, It may loosen the mouthpiece from the container opening, causing leakage of liquid from the container.
  • the nozzle has the risk of collisional breakage, whether it is counterclockwise or clockwise.
  • An object of the present invention is to provide a lotion pump which is capable of preventing loosening due to collision, dropping, and the like during transportation, and liquid leakage caused thereby, and capable of preventing breakage of the emulsion pumping nozzle.
  • an anti-looseening lotion pump comprising: an indenter, the indenter comprising a pressure nozzle; a mouthpiece, the mouthpiece being connected to an opening of a container in which the anti-loose emulsion pump is mounted;
  • the upper end of the cylinder is connected with the dental sleeve, and the other end of the cylinder extends into the container;
  • the piston rod, the upper end of the piston rod is connected with the pressure head, the lower end of the piston rod extends into the space inside the cylinder, and the inner hole of the piston rod and
  • the outlet of the pressure nozzle is in communication; at least one first vertical tooth piece, the first vertical tooth piece is disposed on one of an inner surface of the pressure head sleeve of the pressure head and an outer surface of the dental sleeve, and the first vertical tooth piece has: a guiding surface, the first guiding surface extends from one of the inner surface of the indenter sleeve and the outer surface of the braces in the opening direction
  • the anti-loose emulsion pump having the above structure, when the indenter rotates in the locking direction, the respective guide faces of the vertical block and the vertical tooth piece cooperate with each other, so that the indenter can continuously rotate in the locking direction, and when the indenter is opened When the direction is rotated, the respective blocking faces of the vertical and vertical blocks interact to prevent the rotation of the ram in the opening direction.
  • the anti-looseening lotion pump of the present invention can prevent the indenter from being opened by collision or the like, and can prevent the mouthpiece from coming loose from the opening of the container.
  • the height of the first smooth surface is greater than the height of the external thread, and the height of the second smooth surface is greater than the height of the internal thread.
  • the angle between the first guiding surface and the tangential direction of the indenter or the mouthpiece is smaller than the angle formed by the first blocking surface and the tangential direction of the indenter or the mouthpiece; and/or the second guiding surface and the indenter or the braces
  • the angle formed by the tangential direction is smaller than the angle formed by the second blocking surface and the tangential direction of the indenter or the mouthpiece.
  • a bevel or chamfer is provided on one end of the vertical block facing the vertical tooth.
  • the vertical ribs can smoothly slide over the vertical block along the chamfer or bevel on the vertical block.
  • the anti-loose emulsion pump comprises two or more first vertical tooth pieces and two or more first vertical tooth pieces, and the first vertical tooth piece and the first vertical tooth piece are arranged to be When one of the first vertical tooth pieces is in contact with one of the first vertical tooth pieces, at least one of the remaining one of the first vertical tooth pieces is not associated with any of the remaining ones of the vertical tooth pieces One is in contact. This ensures at least one vertical tooth It does not contact or overlap with any of the vertical tooth blocks, thereby reducing the risk of the vertical tooth pieces yielding deformation due to long-term compression.
  • At least one of the plurality of first vertical tooth pieces and the plurality of first vertical tooth pieces may be disposed to be arranged at irregular intervals, which may increase at least one of the first vertical tooth pieces without any first The probability of vertical block contact.
  • the angular displacement between one vertical tooth piece and an adjacent vertical tooth piece on one side thereof may be set to be larger than the angular displacement between adjacent vertical tooth pieces on the other side thereof, and the difference between the two is at least A single vertical tooth block occupies twice the range of angles.
  • the method is also applicable to a vertical tooth block, gp, which sets the angular displacement between a vertical tooth block and an adjacent vertical tooth block on one side thereof to be larger than between adjacent vertical tooth blocks on the other side thereof.
  • the angular displacement, and the difference between the two is at least twice the range of angles occupied by a single vertical block.
  • One of the at least one second vertical tooth piece and the at least one second vertical tooth piece may also be provided at the joint between the mouthpiece and the opening of the container, respectively.
  • the second vertical tooth piece and the second vertical tooth piece function in the same manner as the first vertical tooth piece and the first vertical tooth piece.
  • the second vertical tooth piece and the second vertical tooth piece are arranged such that the braces are removed from the container
  • the torque required to loosen the opening is greater than the torque required to release the indenter from the mouthpiece.
  • a specific way of realizing the above structure may be to arrange the second vertical tooth piece and the second vertical tooth piece between the mouthpiece and the container opening to have a thicker wall, a larger number and/or a larger interference, or in the field.
  • Other known ways may be to arrange the second vertical tooth piece and the second vertical tooth piece between the mouthpiece and the container opening to have a thicker wall, a larger number and/or a larger interference, or in the field.
  • the direction in which the mouthpiece is released from the opening of the container is opposite to the direction in which the indenter is opened from the mouthpiece. In this way, the anti-loose function can be better.
  • the lower surface of the flange edge of the cylinder extends downwardly out of the annular sealing plug, the outer diameter of the annular sealing plug being greater than the inner diameter of the opening of the container.
  • the gasket used in the prior art can be omitted, and the sealing can be ensured even if there is a certain looseness between the mouthpiece and the container opening.
  • the outer lower portion of the annular sealing plug is provided with a bevel or chamfer. By providing a bevel or chamfer, it can be helpful to insert a circular sealing plug into the opening of the container.
  • an elastic valve is mounted in the inner bore of the piston rod, and the elastic valve is mounted in the inner bore of the piston rod in an interference fit manner, the elastic valve is open at one end, and the other end is closed by a thin wall, thin There is a "cross" shaped slit on the wall.
  • the elastic valve can further ensure the sealing effect of the lotion pump.
  • the anti-loose lotion pump comprises: an indenter, the indenter comprises a pressure nozzle; a mouthpiece, the mouthpiece is connected to an opening of a container equipped with a anti-loose emulsion pump; the cylinder, the upper end of the cylinder and the mouthpiece Connected, the other end of the cylinder protrudes into the container; the piston rod, the upper end of the piston rod is connected with the pressure head, the lower end of the piston rod extends into the space inside the cylinder, and the inner hole of the piston rod and the pressure nozzle of the pressure head The outlet is in communication; wherein the pressure nozzle is movable relative to the body portion of the indenter.
  • the pressure nozzle By moving the pressure nozzle relative to the body of the indenter, the pressure nozzle can be moved to a position free from torque, thereby reducing the risk of loosening the emulsion pump and breaking the nozzle.
  • the pressure nozzle is telescopically mounted on the body portion of the ram.
  • a handle is provided on the pressure nozzle, and when the pressure nozzle is retracted into the body portion of the pressure head, the handle is at least partially exposed.
  • the pressure nozzle is foldably mounted on the body portion of the indenter. Wherein, the pressure nozzle is connected to the body portion of the indenter through a hinge.
  • the pressure nozzle is detachably mounted on the body portion of the ram.
  • Figures la and lb are cross-sectional views of the lotion pump of the present invention, wherein Figure la shows the locked state of the lotion pump and Figure lb shows the open state of the lotion pump.
  • Fig. 2a shows a cross-sectional view of the indenter of the lotion pump of the present invention
  • Fig. 2b shows a bottom view of the indenter
  • Fig. 2c shows a perspective view of the indenter.
  • Figure 3a shows a front view of the mouthpiece of the lotion pump of the present invention
  • Figure 3b shows a top view of the mouthpiece
  • Figure 3c shows a perspective view of the mouthpiece
  • Figure 3d shows a bottom perspective view of the mouthpiece.
  • Figures 4a to 4d show cross-sectional views at the junction of the indenter and the mouthpiece, schematically showing the fit between the vertical tooth in the indenter and the vertical block in the mouthpiece.
  • Figure 5 shows a cross-sectional view of the indenter showing the vertical teeth provided on the inner surface of the indenter sleeve.
  • Figures 6a and 6b show cross-sectional views of the mouthpiece, respectively shown on the outer surface of the mouthpiece. Two forms of vertical block.
  • Figure 7a shows a top view of the opening of the container and Figure 7b shows a perspective view of the opening of the container.
  • Fig. 8a is a cross-sectional view showing the state in which the emulsion pump is connected to the opening of the container, and
  • Fig. 8b is a cross-sectional view taken along line C-C in Fig. 8a.
  • Fig. 9a shows a cross-sectional view of a cylinder of the lotion pump of the present invention
  • Fig. 9b shows a perspective view of the cylinder
  • Fig. 10 shows a cross-sectional view of the lotion pump of the present invention, in which an elastic valve is provided in the inner bore of the piston rod.
  • Figure 11a shows a cross-sectional view of the elastomeric valve
  • Figure 1b shows a top view of the elastomeric valve.
  • Figures 12a and 12b show cross-sectional views of a ram having a telescopic nozzle.
  • Figures 13a to 14b show cross-sectional views of a ram having a folding press.
  • Figures 15a and 15b show cross-sectional views of a ram having a split nozzle.
  • Figure 16a is a cross-sectional view of a prior art lotion pump and Figure 16b is a top plan view of the lotion pump of Figure 16a. detailed description
  • the terms “upper” and “lower” as used herein are placed in a vertical orientation relative to the lotion pump (ie, the emulsion pump is set such that its axial direction is consistent with the vertical direction). ) and determined.
  • Figures la and lb show longitudinal cross-sectional views of the lotion pump 1 of the present invention.
  • Fig. la shows the lotion pump 1 in which the indenter 10 is in the locked position
  • Fig. 1b shows the lotion pump 1 in which the indenter 10 is in the open position.
  • the lotion pump 1 includes a ram 10, a mouthpiece 20, a cylinder 30, and a piston rod.
  • FIG. 8a The upper end of the cylinder 30 is connected to the mouthpiece 20, and the lower end projects into the container 2 (see Fig. 8a).
  • the upper end of the piston rod 40 is connected to the ram 10, the lower end projects into the space in the cylinder 30, and the inner space of the piston rod 40 communicates with the outlet of the pressure nipple 11 on the ram 10.
  • a spring 50 is disposed between the cylinder 30 and the piston rod 40, which applies an upward force to the piston rod 40.
  • 2a to 2c show the indenter 10 of the lotion pump 1 of the present invention, wherein Fig. 2a is a cross-sectional view, Fig. 2b is a bottom view, and Fig. 2c is a perspective view.
  • FIG. 3a to 3d show the dental mouthpiece 20 of the lotion pump 1 of the present invention, wherein Fig. 3a is a front view, Fig. 3b is a plan view, Fig. 3c is a perspective view, and Fig. 3d is a bottom perspective view.
  • the ram 10 includes a ram sleeve 12 and a pressure nozzle 12 extending from the ram sleeve.
  • An internal thread 13 and at least one vertical toothed piece 14 are provided on the inner surface of the indenter sleeve.
  • the vertical tooth piece 14 includes a guide surface 141 and a blocking surface 142.
  • the guide surface 141 extends from the inner surface of the indenter sleeve in the opening direction of the indenter 10 and at an angle to the tangential direction of the indenter 10.
  • the blocking surface 142 is disposed on the side of the vertical tooth piece 14 opposite to the guide surface 141. The angle formed by the guide surface 141 and the tangential direction of the ram 10 is smaller than the angle between the blocking surface 142 and the tangential direction of the ram 10.
  • an external thread 23 and at least one vertical block 24 are provided on the outer surface of the mouthpiece 20.
  • the vertical block 24 also includes a guide surface 241 and a blocking surface 242.
  • the guide surface 241 of the vertical block 24 extends from the outer surface of the mouthpiece in the locking direction of the indenter and at an angle to the tangential direction of the mouthpiece 20.
  • the blocking surface 242 of the vertical block 24 is disposed on the opposite side of the vertical block 24 from the guide surface 241. The angle formed by the guiding surface 241 and the tangential direction of the mouthpiece 20 is smaller than the angle formed by the blocking surface 242 and the tangential direction of the blocking mouthpiece 20.
  • the tangential direction of the ram 10 and the tangential direction of the mouthpiece 20 are also substantially uniform.
  • the inscribed circle 16 of the vertical toothed piece 14 of the indenter 10 is shown in dotted line in Figure 2b, and the circumscribed circle 26 of the vertical toothed block 24 of the mouthpiece 20 is shown in Figure 3b.
  • the radius of the inscribed circle 16 is smaller than the radius of the circumscribed circle 26.
  • the indenter 10 is subjected to a torque in the opening direction due to a collision or a drop during transportation, there will be a mutual blocking effect between the blocking surfaces 142 and 242, and the torque at this time is usually insufficient to damage the vertical tooth piece 14, so The indenter 10 can be prevented from opening.
  • the inner surface of the indenter sleeve 12 is further provided with a smooth surface 15, and a smooth surface 25 is provided on the outer surface of the mouthpiece 20.
  • the height of the smooth surface 15 is set to hl, and the height of the internal thread 13 is set to h2. Set the height of the external thread 23 to H1 and the height of the smooth surface 25 to H2.
  • the ram 10 can be idling relative to the mouthpiece 20 when subjected to torque in the locking direction.
  • the height hi of the smooth surface 15 on the ram 10 is set to be greater than or equal to the height H1 of the external thread 23 on the mouthpiece 20, and the height h2 of the internal thread 13 on the ram 10 is set to be less than or equal to the upper sleeve 20.
  • the height H2 of the smooth surface 25 is.
  • the internal thread 13 of the ram 10 is engaged with the external thread 23 of the mouthpiece 20.
  • the internal threads 13 will all enter the smooth surface 25 in the mouthpiece 20, while the external threads 23 will all enter the smooth surface 15 of the ram 10.
  • the ram 10 is allowed to continue to idle relative to the mouthpiece 20 in the locking direction.
  • the number of the vertical teeth 14 on the ram 10 is two or more.
  • the angular displacement between adjacent two vertical teeth can be appropriately selected such that when one vertical tooth piece 14 comes into contact with the vertical tooth piece 24 on the mouthpiece 20, at least one of the remaining vertical tooth pieces It will not touch any of the remaining vertical blocks.
  • the angular displacement ⁇ between adjacent two vertical teeth 14 (see Fig. 5) and the angular displacement ⁇ 2 between adjacent two vertical blocks 24 on the mouthpiece 20 (see Figures 6a and 6b) Set to be unequal, and the angle 04 is not equal to an integer multiple of the angle ⁇ 2 .
  • the angle range occupied by each of the vertical teeth 14 is set to 0 1 (Fig.
  • the angle range occupied by every vertical tooth block is set to ⁇ 2 (Fig. 5), and the above angle ⁇ should be larger than Angle ⁇ 2 , angle ⁇ 2 should be greater than angle ⁇ 1 ⁇
  • the effective contact angle between the vertical and vertical blocks is ⁇ , BP, so that there is at least part between the vertical and vertical blocks The angle of contact, then the angle ( ⁇ should be outside the range of angle ⁇ 2 ⁇ ⁇ .
  • at least one of the vertical toothed pieces 14 or the vertical toothed pieces 24 are distributed at irregular intervals, which also increases the probability that at least one of the vertical toothed pieces 14 does not contact any of the vertical toothed pieces 24.
  • the angular displacement between a vertical tooth piece and an adjacent vertical tooth piece on one side thereof may be greater than the angular displacement between adjacent vertical tooth pieces on the other side thereof, and the difference between the two is at least a single vertical tooth
  • the block occupies twice the range of angles, ie 2 ⁇ 2 .
  • the arrangement of the above vertical tooth piece 14 and the vertical tooth piece 24 is also interchangeable, gp, the description of the vertical tooth piece is applied to the vertical tooth piece, and the description of the vertical tooth piece is also applicable to the vertical tooth piece.
  • the blocking surface 242 of the vertical block 24 may extend in the radial direction of the mouthpiece 20 (Fig. 6a) or at an angle ⁇ of less than 90° to the radial direction of the mouthpiece 20 (Fig. 6b).
  • a chamfer or bevel 243 is provided on the upper end of the vertical block 24 of the mouthpiece 20, i.e., the end facing the vertical tooth piece 14, as shown in Fig. 3c.
  • a vertical tooth piece is provided on the ram 10, and a vertical tooth piece is provided on the mouthpiece 20.
  • the vertical and vertical tooth pieces can be interchanged, gP, a vertical tooth block is provided on the pressure head 10, and a vertical tooth piece is provided on the dental mouthpiece 20, and the above object of the present invention can also be achieved.
  • the vertical block 24 is provided on the mouthpiece 20, but it can also be disposed on the cylinder head of the cylinder 30.
  • At least one second vertical tooth piece 27 is provided at the bottom of the inner surface of the mouthpiece sleeve 21 of the mouthpiece 20.
  • a second vertical block 67 is provided on the opening of the container 2, as shown in Figs. 7a and 7b.
  • the connection structure between the mouthpiece 20 and the opening of the container 2 is shown in Figs. 8a and 8b, from which it can be seen that the arrangement and operation of the second vertical tooth piece 27 and the second vertical tooth piece 67 are the same as those of the vertical tooth piece described above. 14 and the vertical block 24 are substantially identical to prevent the mouthpiece 20 from being accidentally released from the opening of the container 2.
  • the torque required to retract the mouthpiece from the container opening is preferably greater than the torque required to open the indenter from the mouthpiece, thereby preventing the indenter from opening the braces and opening the container opening when the indenter is rotated. Open situation.
  • the vertical and vertical tooth pieces at the joint between the mouthpiece and the container opening are arranged as vertical teeth at the joint between the pressure head and the mouthpiece and
  • the vertical block has a thicker wall, a greater number and/or a greater interference.
  • other means known in the art can be employed.
  • the direction in which the mouthpiece is released from the container opening is set to be opposite to the direction in which the indenter is opened from the mouthpiece. For example, if the indenter is rotated from the mouthpiece and the head is rotated clockwise, rotating the braces counterclockwise will loosen the mouthpiece from the container opening. Conversely, if the opening direction of the indenter is counterclockwise, rotating the braces clockwise will cause The mouthpiece is released from the container opening.
  • the advantage of this arrangement is that the sealing of the container can be further ensured.
  • the principle is that when the ram 10 is rotated in the locking direction, it corresponds to the opening direction between the mouthpiece 20 and the container 2, but since the ram 10 can be idling relative to the mouthpiece 20, no torque is transmitted to the mouthpiece 20 and At the connection portion between the openings of the container 2. And if the ram 10 is rotated in the opening direction, it corresponds to the locking direction between the mouthpiece 20 and the container 2, at this time, although the torque is transmitted due to the blocking action between the vertical tooth piece 14 and the vertical tooth piece 24 The connection portion between the mouthpiece 20 and the opening of the container 2, but its function is to further tighten the mouthpiece 20 and the container 2, so that no leakage is caused.
  • Figures 9a and 9b show a cross-sectional view and a perspective view, respectively, of the cylinder 30.
  • an annular sealing plug 32 extends downwardly from the lower surface of the cylinder flange edge 3 1 .
  • the outer diameter of the annular sealing plug 32 is slightly larger than the diameter of the opening of the container 2.
  • a bevel or chamfer is provided at the lower portion of the outer side of the annular sealing plug 32 to facilitate fitting the annular sealing plug 32 into the container opening.
  • the gasket which acts as a seal can be omitted, thereby reducing the number of components. Moreover, since the sealing plug and the container opening are side-sealed and have a certain length, even if there is some looseness between the mouthpiece and the bottle mouth, leakage can be ensured.
  • an elastic valve 41 is provided in an upper portion of the inner bore of the piston rod 40.
  • the outer diameter of the elastic valve 41 is slightly larger than the diameter of the upper portion of the inner bore of the piston rod 40.
  • the elastic valve 41 is press-fitted into the inner bore of the piston rod 40.
  • the elastic valve 41 has a cylindrical shape, and its lower end is open, and the upper end is The thin wall 42 is closed.
  • the thin wall 42 at the upper end of the elastic valve 41 is provided with a "cross" shaped slit 43.
  • the "cross" shaped slit 43 is closed under normal conditions, and only when the pressure difference between the two sides of the thin wall 42 is large, the "cross" shaped slit 43 is opened, so that the liquid in the container can flow out.
  • the elastic valve 41 when the container is placed horizontally, since the pressure difference on both sides of the thin wall 42 of the elastic valve 41 is not large, the elastic valve does not open, thereby preventing leakage of the liquid in the container.
  • the inventors of the present invention also contemplate the technical problem of the anti-looseness of the present invention from the structure of the press nozzle 11 of the indenter 10.
  • the pressure nozzle 11 on the ram 10 is placed in a telescopic form. During transport, the pressure nozzle 11 can be retracted into the interior of the ram 10 as shown in Figure 12a. When in use, the pressure nozzle 11 can be pulled out and used.
  • a pull handle 111 may be provided at the front of the pressure nozzle 11, and when the presser is retracted into the press head 10, the pull handle 11 1 is partially exposed to facilitate the user to pull the pressure nozzle 11 out.
  • the pressure nozzle 1 1 can be arranged to be foldable, for example, folded up (Figs. 13a, 13b) or folded down (Figs. 14a, 14b).
  • the pressure nozzle 11 and the ram 10 are connected by a hinge 112.
  • the pressure nozzle 11 of the ram 10 can be set in a unitary manner. As shown in Fig. 15a, the pressure nozzle 11 can be separated from the ram 10 during transportation. When in use, the pressure nozzle 11 can be inserted into a corresponding hole provided in the ram 10 for use.
  • the above-described retractable, foldable and split type pressure nozzles 11 are designed such that the pressure nozzles are no longer subjected to torque during transportation, thereby reducing the risk of loosening of the pressure head 10 and the mouthpiece 20. Moreover, such an arrangement can also reduce the risk of breakage of the pressure nozzle 11.

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  • Closures For Containers (AREA)

Abstract

一种防松脱乳液泵,该防松脱乳液泵(1)包括:压头(10)、牙套(20)、汽缸(30)和活塞杆(40),其中在压头(10)和牙套(20)上分别设置有可相互作用的竖齿片(14)和竖齿块(24)。当压头(10)沿锁定方向旋转时,竖齿片(14)可越过竖齿块(24),当压头(10)沿打开方向旋转时,竖齿片(14)和竖齿块(24)相互作用,阻止压头的旋转。该防松脱乳液泵(1)的压头(20)还包括可相对运动的压嘴(11)。通过本防松脱乳液泵,防止压头因碰撞等原因而打开,并且可防止牙套从容器的开口松脱。

Description

防松脱乳液泵 技术领域
本发明涉及一种乳液泵, 更具体地说是涉及一种能够防松脱的乳液泵。 该乳 液泵特别地为按压式的乳液泵。 背景技术
通常, 在诸如沐浴液、 洗发水等瓶装产品的容器开口上安装有乳液泵, 使用 者可通过按压该乳液泵而将容器内的产品泵出容器, 以供使用。 图 16a和 16b示 出了一种目前常用的乳液泵。 其中图 16a是剖视图, 示出了乳液泵的内部构造。
如图 16a中所示,乳液泵 100包括具有出口的压头 110、牙套 120和汽缸 130。 牙套 120以螺纹连接的方式与容器 (未示出) 的开口相连, 由此将乳液泵 100连 接到容器中。 汽缸 130的一端与牙套 120相连, 另一端则伸入容器内部。 乳液泵 100中还设置有活塞杆 140, 活塞杆 140的一端与压头 120固定连接, 另一端则伸 入汽缸 130的内部。 活塞杆 140的内部与压头 110的出口流体连通。
在活塞杆 140的下部设置有第一弹簧座 151, 与之相对应地, 在汽缸 130中 设置有第二弹簧座 152, 压缩弹簧 150支承在第一弹簧座和第二弹簧座 152之间。 该压缩弹簧 150对活塞杆 140施加向上的偏置力。
如图 16a所示, 压头 110和牙套 120上分别设置有互补的内、 外螺纹, 通过 该内、 外螺纹之间的啮合, 可将压头 110固定在锁定位置上。 通过使压头 110沿 图 16b中的箭头所示的打开方向 (逆时针方向) 旋转, 可使压头 110从锁定位置 过渡到打开位置。 在打开位置, 活塞杆 140在压缩弹簧 150的偏置力作用下向上 运动, 进而使压头 110向上运动。
在汽缸 130上设有第一阀门 160, 在活塞杆 140的底部设置有活塞头 170, 其与对应的活塞形成单向阀。 第一阀门 160也是单向阀, 且其流向与活塞头 170 处的单向阀的流向相同。 当压头 110和活塞杆 140处于打开位置时, 使用人可抵 抗弹簧 150的偏置力向下按压压头 110。 此时, 第一阀门 160和活塞杆 140之间 的空间被压缩, 从而其中的压力上升, 在该压力作用下, 在第一阀门 160和活塞 杆 140之间的产品流入活塞杆 140内部, 并经压头 110的出口排出。 当使用人撤 除对压头 110的按压时, 活塞杆 140连同压头 110—起在弹簧的向上偏置力的作 用下向上运动, 此时第一阀门 160和活塞杆 140之间的空间膨胀, 在此过程中, 由于汽缸对活塞的摩擦力作用, 活塞相对于活塞头 170向下运动, 从而关闭相应 的单向阀。 此时, 第一阀门 160和活塞杆 140之间的压力下降, 在该压力差的作 用下, 第一阀门 160打开, 从而容器中的液体流入第一阀门 160和活塞杆 140之 间的空间中。
目前, 随着电子商务的快速发展, 现有的乳液泵显现出了一些问题。 具体来 说, 在将瓶装产品通过快递运送的过程中, 由于碰撞、 跌落等原因, 乳液泵的管 状压嘴会受到扭矩的作用, 从而使压头转动。 若压头朝逆时针的打开方向转动, 则有可能使压头转到打开位置, 从而弹起。 此时, 若压头受到向下的压力, 则容 器内的液体会被泵出。 而且, 牙套和容器之间的螺纹连接方向与压头和牙套之间 的螺纹连接方向是相同的, 也就是说, 当压嘴受到扭矩作用而使压头沿逆时针的 打开方向旋转时, 有可能会使牙套从容器开口松脱, 造成容器内液体的泄漏。 此 外, 无论是受逆时针方向还是顺时针方向的扭矩, 压嘴都有碰撞断裂的风险。
因此,需要提供一种新型的用于瓶装产品的乳液泵, 以克服以上所述的问题。 发明内容
本发明是基于上述现有技术的乳液泵所存在的问题而做出的。 本发明的目的 是提供一种乳液泵, 该乳液泵能够防止在运输过程中因碰撞、 跌落等原因而松脱 以及由此导致的液体泄漏, 并且能够防止乳液泵压嘴的断裂。
本发明的上述目的通过一种防松脱乳液泵, 该防松脱乳液泵包括: 压头, 压头包括压嘴;牙套,牙套与安装有防松脱乳液泵的容器的开口相连接;汽缸, 汽缸的上端与牙套相连接, 汽缸的另一端伸入容器中; 活塞杆, 活塞杆的上端 与压头相连接, 活塞杆的下端伸入汽缸内的空间中, 且活塞杆的内孔与压嘴的 出口相连通; 至少一个第一竖齿片, 第一竖齿片设置在压头的压头套管的内表 面和牙套的外表面中的一个上, 且第一竖齿片具有: 第一导向面, 第一导向面 从压头套管的内表面和牙套的外表面中的一个开始沿压头的打开方向延伸,且 与压头或牙套的切线方向成一定角度; 第一阻挡面, 第一阻挡面设置在第一竖 齿片的与第一导向面相反的一侧上, 且与压头或牙套的切线方向成一定角度; 以及至少一个第一竖齿块,第一竖齿片设置在压头的压头套管的内表面和牙套 的外表面中的另一个上, 且第一竖齿块具有: 第二导向面, 第二导向面从压头 套管的内表面和牙套的外表面中的另一个开始沿压头的锁定方向延伸,且与压 头或牙套的切线方向成一定角度; 第二阻挡面, 第二阻挡面设置在第一竖齿块 的与第一导向面相反的一侧上,且与压头或牙套的切线方向成一定角度;其中, 第一竖齿片的内接圆的半径小于第一竖齿块的外接圆的半径,从而第一竖齿片 与第一竖齿块之间为过盈配合; 以及, 在压头的压头套管的内表面上设置有内 螺纹和第一光滑表面; 在牙套的外表面上设置有外螺纹和第二光滑表面; 内螺 纹、 外螺纹、 第一光滑表面和第二光滑表面被设置成, 随着沿锁定方向相对于 牙套旋转压头, 内螺纹能够越过外螺纹, 从而内螺纹完全进入与第二光滑表面 相对应的位置, 而外螺纹则完全进入与第一光滑表面相对应的位置。
通过具有上述结构的防松脱乳液泵, 当压头沿锁定方向旋转时, 竖齿块 和竖齿片各自的导向面互相配合, 从而压头可沿锁定方向持续旋转, 而当压头 沿打开方向旋转时, 竖齿片和竖齿块各自的阻挡面互相作用, 从而阻止压头沿 打开方向的旋转。 由此, 本发明的防松脱乳液泵可防止压头因碰撞等原因而打 开, 并且可防止牙套从容器的开口松脱。
在一种具体结构中, 第一光滑表面的高度大于外螺纹的高度, 且第二光 滑表面的高度大于内螺纹的高度。
较佳地, 第一导向面与压头或牙套的切线方向所成的角度小于第一阻挡 面与压头或牙套的切线方向所成的角度; 和 /或第二导向面与压头或牙套的切 线方向所成的角度小于第二阻挡面与压头或牙套的切线方向所成的角度。
较佳地, 在竖齿块面向竖齿片的一端上设置有斜面或倒角。 这样, 在沿 锁定防线旋转压头且向下按压压头时,竖齿片能够顺着竖齿块上的倒角或斜面 顺利地滑过竖齿块。
较佳地, 防松脱乳液泵包括两个以上的第一竖齿片和两个以上的第一竖 齿块, 将所述第一竖齿片和所述第一竖齿块布置成, 当所述第一竖齿片中的一 个与所述第一竖齿块中的一个相接触时,其余的所述第一竖齿片中的至少一个 不与其余的所述竖齿块中的任意一个相接触。这样, 可确保至少有一个竖齿片 不与任何一个竖齿块相互接触或重叠,由此减少竖齿片因长期受压而屈服变形 的风险。
这可以至少通过如下方式中的一种地设置相邻第一竖齿片之间的角位移 αι与相邻第一竖齿块之间的角位移 α2之间的关系来实现: αι≠ηα2 ; α2≠ηαι ; α!>ηα2+θ α!<ηα2-θ; 以及 α^ηο^+θ或 α^ηο^-θ; 其中, η为自然数, θ为所 述第一竖齿片和所述第一竖齿块之间的有效重叠角度。
或者, 也可将多个第一竖齿片和多个第一竖齿块中的至少一种设置成以 不规则的间距布置,这至少可增加至少一个第一竖齿片不与任何第一竖齿块接 触的概率。
例如, 可以将一个竖齿片与其一侧上的相邻竖齿片之间的角位移设置成 大于与其另一侧上的相邻竖齿片之间的角位移,且两者之差至少为单个竖齿块 所占的角度范围的两倍。 或者, 该方式也适用于竖齿块, gp, 将一个竖齿块与 其一侧上的相邻竖齿块之间的角位移设置成大于与其另一侧上的相邻竖齿块 之间的角位移, 且两者之差至少为单个竖齿块所占的角度范围的两倍。
在牙套和容器的开口之间的连接处还可分别设置至少一个第二竖齿片和 至少一个第二竖齿块中的一种。此处的第二竖齿片和第二竖齿块的作用原理与 第一竖齿片和第一竖齿块相同。
较佳地, 为避免旋转压头的过程中压头未打开而牙套先从容器开口松脱 的现象发生, 将第二竖齿片和述第二竖齿块设置成, 使得将牙套从容器的开口 松脱所需的扭矩大于将压头从牙套松开所需的扭矩。
实现上述结构的具体方式可以是将牙套和容器开口之间的第二竖齿片和 第二竖齿块设置成壁厚更厚、 数量更多和 /或过盈量更大, 或者是本领域中其 它已知的方式。
较佳地, 将牙套从容器的开口松脱的方向与将压头从牙套打开的方向相 反。 这样, 可使防松脱的功能更佳。
在一个更佳的实施方式中, 汽缸的法兰边的下表面向下延伸出环形密封 塞, 环行密封塞的外直径大于容器的开口的内直径。 由此, 可省略现有技术中 使用的垫片, 并且在牙套和容器开口之间有一定的松脱的情况下仍能保证密 封。 较佳地, 环形密封塞的外侧下部设置有斜面或倒角。 通过设置斜面或倒 角, 可有助于将环行密封塞***容器的开口中。
在另一个更佳的实时方式中, 活塞杆的内孔中安装有弹性阀, 弹性阀以 过盈配合方式安装在活塞杆的内孔中, 弹性阀一端开口, 另一端由薄壁封闭, 薄壁上设有 "十字" 形切缝。 该弹性阀能够进一步保证乳液泵的密封效果。
根据本发明的另一方面, 该防松脱乳液泵包括: 压头, 压头包括压嘴; 牙套, 牙套与安装有防松脱乳液泵的容器的开口相连接; 汽缸, 汽缸的上端与 牙套相连接,汽缸的另一端伸入容器中;活塞杆,活塞杆的上端与压头相连接, 活塞杆的下端伸入汽缸内的空间中,且活塞杆的内孔与压头的压嘴的出口相连 通; 其中, 压嘴相对于压头的本体部分可运动。
通过使压嘴相对于压头的本体可运动, 可使压嘴运动到不受扭矩作用的 位置, 从而减少乳液泵松脱以及压嘴断裂的风险。
较佳地, 压嘴可伸缩地安装在压头的本体部分上。 其中, 在压嘴上设有 拉手, 当压嘴缩进压头的本体部分中时, 拉手至少部分地露出。
或者, 压嘴可折叠地安装在压头的本体部分上。 其中, 压嘴通过铰链与 压头的本体部分相连。
再例如, 压嘴可拆卸地安装在压头的本体部分上。 附图说明
图 la和 lb是本发明的乳液泵的截面图,其中图 la示出的是乳液泵的锁定状 态, 图 lb示出的是乳液泵的打开状态。
图 2a示出的是本发明的乳液泵的压头的截面图, 图 2b示出的是压头的仰视 图, 图 2c示出的是压头的立体图。
图 3a示出的是本发明的乳液泵的牙套的正视图, 图 3b示出的是牙套的俯视 图, 图 3c示出的是牙套的立体图, 图 3d示出的是牙套的仰视立体图。
图 4a〜4d示出的是压头和牙套的连接部处的截面图, 其中示意性地示出了 压头中的竖齿片和牙套中的竖齿块之间的配合。
图 5示出的是压头的截面图,其中示出了设置于压头套管内表面上的竖齿片。 图 6a和 6b示出的是牙套的截面图, 其中分别示出了设置于牙套外表面上的 竖齿块的两种形式。
图 7a示出了容器的开口处的俯视图, 图 7b示出了容器的开口处的立体图。 图 8a示出了乳液泵与容器的开口相连接状态下的截面图, 图 8b是沿图 8a 中的线 C-C得到的截面图。
图 9a示出了本发明的乳液泵的汽缸的截面图,图 9b示出了该汽缸的立体图。 图 10 示出了本发明的乳液泵的截面图, 其中, 在活塞杆的内孔中设置有弹 性阀。
图 11a示出了弹性阀的截面图, 图 l ib示出了该弹性阀的俯视图。
图 12a和 12b示出了具有伸缩式压嘴的压头的截面图。
图 13a〜 14b示出了具有折叠式压嘴的压头的截面图。
图 15a和 15b示出了具有分体式压嘴的压头的截面图。
图 16a是现有技术的乳液泵的截面图,图 16b是图 16a所示乳液泵的俯视图。 具体实施方式
下面将结合附图对本发明的具体实施方式进行详细说明。 应当了解, 附 图中所示的仅仅是本发明的较佳实施例, 其并不构成对本发明的范围的限制。 本领域的技术人员可以在附图所示的实施例的基础上对本发明进行各种显而 易见的修改、 变型、 等效替换, 这些都落在本发明的保护范围之内。
在此要说明的是,文中所使用的 "上"和"下"等关于方向的用语是相对于乳 液泵被放置成竖直取向(即乳液泵被设置成其轴线方向与竖直方向相一致)而 确定的。
图 la和 lb示出了本发明的乳液泵 1的纵向剖视图。 其中, 图 la示出的 是压头 10处于锁定位置的乳液泵 1, 图 lb示出的是压头 10处于打开位置的 乳液泵 1。
如图 la和 lb所示, 乳液泵 1包括压头 10、 牙套 20、 汽缸 30和活塞杆
40。 汽缸 30的上端与牙套 20相连接, 下端伸入容器 2 (见图 8a) 内。 活塞杆 40的上端与压头 10相连, 下端则伸入汽缸 30内的空间中, 且活塞杆 40的内 部空间与压头 10上的压嘴 11的出口相连通。汽缸 30和活塞杆 40之间设置有 弹簧 50, 该弹簧 50对活塞杆 40施加向上的力。 图 2a〜2c示出了本发明的乳液泵 1 的压头 10, 其中图 2a是截面图, 图 2b是仰视图, 图 2c是立体图。 图 3a〜3d示出了本发明的乳液泵 1的牙套 20, 其中图 3a是正视图, 图 3b是俯视图, 图 3c是立体图, 图 3d是仰视立体图。
如图 2a中所示, 压头 10包括压头套管 12和从压头套管延伸而出的压嘴 12。 在压头套管内表面上设有内螺纹 13 和至少一个竖齿片 14。 该竖齿片 14 包括导向面 141和阻挡面 142。导向面 141从压头套管的内表面开始沿压头 10 的打开方向延伸, 且与压头 10的切线方向呈一定角度。 阻挡面 142设置在竖 齿片 14的与导向面 141相反的一侧上。导向面 141与压头 10的切线方向所成 的角度小于阻挡面 142与压头 10的切线方向所成角度。
相对应地, 如图 3a所示, 在牙套 20的外表面上设有外螺纹 23和至少一 个竖齿块 24。该竖齿块 24也包括导向面 241和阻挡面 242。竖齿块 24的导向 面 241从牙套的外表面开始沿压头的锁定方向延伸, 且与牙套 20的切线方向 成一定角度。竖齿块 24的阻挡面 242设置在竖齿块 24的与导向面 241相反的 一侧上。 导向面 241与牙套 20的切线方向所成的角度小于阻挡面 242与阻挡 面牙套 20的切线方向所成的角度。
在此需要说明的是, 由于压头 10和牙套 20是大致同轴地安装的, 因此 压头 10的切线方向和牙套 20的切线方向也是大致一致的。
图 2b中以点划线示出了压头 10的竖齿片 14的内接圆 16, 在图 3b中则 示出了牙套 20的竖齿块 24的外接圆 26。 在本发明中, 内接圆 16的半径小于 外接圆 26的半径。 这样, 当压头 10相对于牙套 20转动到使竖齿片 14与竖 齿块 24相接触的位置时, 竖齿片 14与竖齿块 24之间将产生干涉配合。
如图 4a〜4d 中所示的, 通过根据上述结构而设置的竖齿片 14和竖齿块 24, 当沿锁定方向旋转压头 10时, 压头 10的竖齿片 14的导向面 141与牙套 20的竖齿块 24的导向面 241相向运动。 此时, 导向面 141和导向面 241之间 的相互作用将使竖齿片 14弹性形变, 从而使竖齿片 14能够越过竖齿块 24, 如图 4b〜4c 中所示的。 而当沿着打开方向旋转压头 10 时, 竖齿片的阻挡面 142和竖齿块的阻挡面 242相向运动, 两者互相干涉, 从而阻挡压头进一步旋 转, 如图 4a和 4d中所示的。 只有当向压头 10进一步施加足以破坏竖齿片 14 的更大扭矩时, 压头 10才能进一步旋转而打开。 因此, 在运输过程中, 若压头 10受到沿锁定方向的扭矩时, 导向面 141 和 241相向运动, 从而竖齿片 14能够越过竖齿块 24, 因此压头 10能够相对 于牙套 20空转。而若压头 10在运输过程中因碰撞或跌落而受到沿打开方向的 扭矩, 阻挡面 142和 242之间将存在相互阻挡的作用, 且此时的扭矩通常不足 以破坏竖齿片 14, 因此可防止压头 10打开。
如图 2a和 3a所示, 压头套管 12的内表面上还设有光滑表面 15, 在牙套 20的外表面上还设有光滑表面 25。 将该光滑表面 15的高度设为 hl, 内螺纹 13 的高度设为 h2。 将外螺纹 23 的高度设为 Hl, 将光滑表面 25 的高度设为 H2。
通过设置内螺纹 13、 外螺纹 23 以及光滑表面 15、 25的结构和尺寸, 使 压头 10在受到沿锁定方向的扭矩时能够相对于牙套 20空转。具体来说, 将压 头 10上的光滑表面 15的高度 hi设置成大于等于牙套 20上的外螺纹 23的高 度 Hl, 将压头 10上的内螺纹 13的高度 h2设置成小于等于牙套 20上的光滑 表面 25的高度 H2。 这样, 在压头 10和牙套 20之间形成"跳齿"结构。 具体来 说, 当向下按压压头 10并相对于牙套 20朝锁定方向旋转压头 10时, 压头 10 的内螺纹 13与牙套 20的外螺纹 23相啮合。 随着压头 10继续旋转, 内螺纹 13将全部进入到牙套 20中的光滑表面 25上, 而外螺纹 23则将全部进入到压 头 10 的光滑表面 15 中。 这样, 允许压头 10沿锁定方向继续相对于牙套 20 空转。
较佳地, 压头 10上的竖齿片 14的数量为两个或两个以上。 在此情况中, 可适当地选取相邻两个竖齿片之间的角位移, 使得当一个竖齿片 14与牙套 20 上的竖齿块 24相接触时, 其余竖齿片中的至少一个不会与其余竖齿块中的任 意一个相接触。 例如, 可将相邻两个竖齿片 14之间的角位移 αι (见图 5 ) 与 牙套 20上的相邻两个竖齿块 24之间的角位移 α2 (见图 6a和 6b)设置成不相 等, 并且角度04与角度 α2的整数倍也不相等。 此外, 若将每个竖齿片 14所占 的角度范围设为 01 (图 4) , 将每隔竖齿块所占的角度范围设为 β2 (图 5 ) , 则上述角度 αι应大于角度 β2, 角度 α2则应大于角度 β1 α 进一步地, 假设竖齿 片和竖齿块之间的有效接触角度为 θ, BP , 使得竖齿片和竖齿块之间有至少部 分的接触的角度, 则角度 (^应在角度 α2±θ的范围之外。 或者, 竖齿片 14或竖齿块 24 中的至少一个以不规则的间距分布, 这同 样可以增加至少一个竖齿片 14不与任何一个竖齿块 24相接触的概率。 例如, 一个竖齿片与其一侧上的相邻竖齿片之间的角位移可以大于与其另一侧上的 相邻竖齿片之间的角位移,且两者之差至少为单个竖齿块所占的角度范围的两 倍, 即 2β2
以上竖齿片 14和竖齿块 24 的布置方式也可互换, gp, 对竖齿片的描述 适用于竖齿块, 对竖齿块的描述也适用于竖齿片。
通过如此设置竖齿片 14和竖齿块 24的分布, 可保证至少一个竖齿片 14 不因长时间受竖齿块 24的压制而屈服变形, 以保证竖齿片 14的阻挡功能。
竖齿块 24的阻挡面 242可以沿牙套 20的径向延伸 (如图 6a) , 也可与 牙套 20的径向呈一个小于 90°的角度 γ (如图 6b ) 。
在将压头 10锁定到牙套 20上的过程中, 在水平旋转压头 10的同时, 需 要将压头 10沿轴线向下按压。 与压头 10的该向下运动相配合, 在牙套 20的 竖齿块 24的上端、 即面向竖齿片 14的那一端上设置倒角或斜面 243, 如图 3c 所示。通过该倒角或斜面 243,当压头的竖齿片 14与牙套的竖齿块 24接触时, 竖齿片能够顺着竖齿块上的倒角或斜面顺利地滑过竖齿块。
在以上所描述的结构中, 在压头 10上设置竖齿片, 在牙套 20上设置竖 齿块。 此处的竖齿片和竖齿块可以互换, gP, 在压头 10上设置竖齿块, 而在 牙套 20上设置竖齿片, 同样能够实现上述本发明的目的。
以上所述的结构中, 竖齿块 24设置在牙套 20上, 但其也能够设置在汽 缸 30的汽缸盖上。
进一步地, 如图 3d所示, 在牙套 20的牙套套管 21的内表面的底部设置 有至少一个第二竖齿片 27。 与之相对应地, 在容器 2的开口上设置有第二竖 齿块 67, 如图 7a和 7b所示。 牙套 20和容器 2的开口之间的连接结构显示在 图 8a和 8b中, 从中可以看到, 第二竖齿片 27和第二竖齿块 67的设置方式和 工作原理与上述的竖齿片 14和竖齿块 24基本相同, 可防止牙套 20从容器 2 的开口意外松脱。
以上对竖齿片 14和竖齿块 24所描述的结构和布置也适用于第二竖齿片 27和第二竖齿块 67。 进一步地, 将牙套从容器开口松退所需的扭矩较佳地大于将压头从牙套 打开所需的扭矩, 由此防止在旋转压头时, 出现压头还未打开牙套和容器开口 先松开的情况。 为此, 可以采取以下方式中的至少一种: 将牙套和容器开口之 间的连接部处的竖齿片和竖齿块设置成比压头和牙套之间的连接部处的竖齿 片和竖齿块壁厚更厚、 数量更多和 /或过盈量更大。 此外, 还可采取本领域中 已知的其它方式。
此外, 为了能够使密封效果更好, 将牙套从容器开口松脱的方向设置成 与压头从牙套打开的方向相反。例如,若将压头从牙套打开需顺时针旋转压头, 则逆时针旋转牙套将使牙套从容器开口松脱, 反之, 若压头的打开方向是逆时 针方向, 则顺时针旋转牙套将使牙套从容器开口松脱。
这样设置的好处是能够进一步保证容器的密封性。 其原理在于, 当压头 10沿锁定方向旋转时, 其对应于牙套 20和容器 2之间的打开方向, 但由于压 头 10能够相对于牙套 20空转, 因此不会有扭矩传递到牙套 20和容器 2的开 口之间的连接部分处。而若压头 10沿打开方向旋转时, 其对应于牙套 20和容 器 2之间的锁紧方向, 此时, 虽然由于竖齿片 14和竖齿块 24之间的阻挡作用 而将扭矩传递到牙套 20和容器 2的开口之间的连接部分处, 但其作用是进一 步拧紧牙套 20和容器 2, 因此不会造成泄漏。
图 9a和 9b分别示出了汽缸 30的截面图和立体图。如图 9a所示, 在汽缸 法兰边 3 1 的下表面向下延伸出环形密封塞 32。 该环形密封塞 32的外直径略 大于容器 2的开口的直径。这样, 当将连接在一起的牙套 20和汽缸 30安装到 容器开口上时, 环行密封塞 32***容器开口中, 并与容器开口过盈配合, 起 到密封容器的作用, 如图 8a中所示的。 此外, 在环形密封塞 32外侧的下部设 置斜面或倒角, 以有利于将环行密封塞 32配合到容器开口内。
通过设置环形密封塞 32, 可以省去起到密封作用的垫片, 从而减少部件 数量。 并且, 由于密封塞和容器开口之间是侧面密封, 且具有一定长度, 因此 即使牙套和瓶口之间有一些松退, 仍可保证不发生泄漏。
如图 10中所示, 在活塞杆 40的内孔上部中设置有弹性阀 41。 该弹性阀 41 的外直径略大于活塞杆 40 内孔上部的直径。 这样, 该弹性阀 41压配到活 塞杆 40的内孔中。 如图 1 1a所示, 弹性阀 41呈圆柱状, 其下端开口, 上端为 薄壁 42所闭合。 从图 l ib所示的俯视图可见, 弹性阀 41上端处的薄壁 42上 带有"十字"形切缝 43。 该"十字"形切缝 43在正常状态下是闭合的, 只有当薄 壁 42两侧的压力差很大时, 该"十字"形切缝 43才张开, 从而容器内的液体可 流出。
通过设置弹性阀 41, 在容器被横置时, 由于弹性阀 41的薄壁 42两侧上 的压力差不大, 因而弹性阀不会打开, 从而可防止容器内液体的泄漏。
本发明的发明人还设想从压头 10 的压嘴 11 的结构上来解决本发明的防 松脱的技术问题。
如图 12a和 12b所示,将压头 10上的压嘴 11设置成可伸缩的形式。在运 输过程中, 压嘴 11可缩到压头 10的内部, 如图 12a所示。 在使用时, 可直接 将压嘴 11拉出即可使用。 可以在压嘴 11的前部设置拉手 111, 在压嘴缩进压 头 10时, 拉手 11 1部分地露出, 以便于使用人将压嘴 11拉出。
如图 13a〜14b所示, 可将压嘴 1 1 设置成可折叠的, 例如向上翻折 (图 13a、 13b ) 或向下翻折 (图 14a、 14b ) 。 压嘴 11和压头 10之间通过铰链 112 相连。
如图 15a和 15b所示, 可将压头 10的压嘴 11设置成分体式的。 如图 15a 所示, 在运输过程中, 压嘴 11可与压头 10分离。 当使用时, 可将压嘴 11插 入压头 10上设置的对应孔, 以便使用。
上述可伸缩、 可折叠和分体式的压嘴 11的设计使得压嘴在运输过程中不 再会受到扭矩的作用, 因此可降低压头 10和牙套 20松脱的风险。 并且, 这样 的设置还可减少压嘴 11断裂的风险。

Claims

权利要求
1. 一种防松脱乳液泵, 其特征在于, 所述防松脱乳液泵包括:
压头, 所述压头包括压嘴;
牙套, 所述牙套与安装有所述防松脱乳液泵的容器的开口相连接; 汽缸, 所述汽缸的上端与所述牙套相连接, 所述汽缸的另一端伸入所述 容器中;
活塞杆, 所述活塞杆的上端与所述压头相连接, 所述活塞杆的下端伸入 所述汽缸内的空间中, 且所述活塞杆的内孔与所述压嘴的出口相连通;
至少一个第一竖齿片, 所述第一竖齿片设置在所述压头的压头套管的内 表面和所述牙套的外表面中的一个上, 且所述第一竖齿片具有: 第一导向面, 所述第一导向面从所述压头套管的所述内表面和所述牙套的所述外表面中的 所述一个开始沿所述压头的打开方向延伸,且与所述压头或所述牙套的切线方 向成一定角度; 第一阻挡面, 所述第一阻挡面设置在所述第一竖齿片的与所述 第一导向面相反的一侧上, 且与所述压头或所述牙套的切线方向成一定角度; 以及
至少一个第一竖齿块, 所述第一竖齿片设置在所述压头的压头套管的内 表面和所述牙套的外表面中的另一个上,且所述第一竖齿块具有:第二导向面, 所述第二导向面从所述压头套管的所述内表面和所述牙套的所述外表面中的 所述另一个开始沿所述压头的锁定方向延伸,且与所述压头或所述牙套的切线 方向成一定角度; 第二阻挡面, 所述第二阻挡面设置在所述第一竖齿块的与所 述第一导向面相反的一侧上, 且与所述压头或所述牙套的切线方向成一定角 度;
其中, 所述第一竖齿片的内接圆的半径小于所述第一竖齿块的外接圆的 半径, 从而所述第一竖齿片与所述第一竖齿块之间为过盈配合; 以及
其中, 在所述压头的压头套管的内表面上设置有内螺纹和第一光滑表面; 在所述牙套的外表面上设置有外螺纹和第二光滑表面; 所述内螺纹、所述外螺 纹、所述第一光滑表面和所述第二光滑表面被设置成, 随着沿锁定方向相对于 所述牙套旋转所述压头, 所述内螺纹能够越过所述外螺纹, 从而所述内螺纹完 全进入与所述第二光滑表面相对应的位置,而所述外螺纹则完全进入与所述第 一光滑表面相对应的位置。
2. 如权利要求 1所述的防松脱乳液泵, 其特征在于, 所述第一光滑表面 的高度大于所述外螺纹的高度,且所述第二光滑表面的高度大于所述内螺纹的 高度。
3. 如权利要求 1所述的防松脱乳液泵, 其特征在于, 所述第一导向面与 所述压头或所述牙套的切线方向所成的角度小于所述第一阻挡面与所述压头 或所述牙套的切线方向所成的角度; 和 /或所述第二导向面与所述压头或所述 牙套的切线方向所成的角度小于所述第二阻挡面与所述压头或所述牙套的切 线方向所成的角度。
4. 如权利要求 1所述的防松脱乳液泵, 其特征在于, 所述防松脱乳液泵 包括两个以上的所述第一竖齿片和两个以上的所述第一竖齿块,将所述第一竖 齿片和所述第一竖齿块布置成,当所述第一竖齿片中的一个与所述第一竖齿块 中的一个相接触时,其余的所述第一竖齿片中的至少一个不与其余的所述竖齿 块中的任意一个相接触。
5. 如权利要求 4所述的防松脱乳液泵, 其特征在于, 相邻的两个第一竖 齿片之间的角位移 04与相邻的两个第一竖齿块之间的角位移 α2满足如下关系 中的至少一种:
ai≠na2 ;
α2≠ηαι;
α^ιιο^+θ或 α^ηο^-θ ; 以及
ο^ιιο^+θ或 α2〈110^-6 ;
其中, η为自然数, Θ为所述第一竖齿片和所述第一竖齿块之间的有效重 叠角度。
6. 如权利要求 4所述的防松脱乳液泵, 其特征在于, 所述第一竖齿片和 所述第一竖齿块中的至少一个沿周向以不规则的间距布置。
7. 如权利要求 6所述的防松脱乳液泵, 其特征在于, 所述第一竖齿片中 的一个与其一侧上的相邻竖齿片之间的角位移和所述第一竖齿片中的所述一 个与其另一侧上的相邻竖齿片之间的角位移之间的差大于等于所述第一竖齿 块中的一个所占的角度范围的两倍; 和 /或
所述第一竖齿块中的一个与其一侧上的相邻竖齿块之间的角位移和所述 第一竖齿块中的所述一个与其另一侧上的相邻竖齿块之间的角位移之间的差 大于等于所述第一竖齿片中的一个所占的角度范围的两倍。
8. 如权利要求 1所述的防松脱乳液泵, 其特征在于, 在所述竖齿块面向 所述竖齿片的一端上设置有斜面或倒角。
9. 如权利要求 1〜8中任一项所述的防松脱乳液泵, 其特征在于, 所述牙 套上还设置有至少一个第二竖齿片和至少一个第二竖齿块中的一种,在所述容 器的开口处相对应地设置有至少一个第二竖齿片和至少一个第二竖齿块中的 另一种。
10. 如权利要求 9所述的防松脱乳液泵, 其特征在于, 将所述第二竖齿片 和所述第二竖齿块设置成,使得将所述牙套从所述容器的开口松脱所需的扭矩 大于将所述压头从所述牙套松开所需的扭矩。
11. 如权利要求 10所述的防松脱乳液泵, 其特征在于, 所述第一竖齿片、 所述第一竖齿块、所述第二竖齿片和所述第二竖齿块满足如下条件中的至少一 项:
所述第一竖齿片的壁厚小于所述第二竖齿片的壁厚, 和 /或所述第一竖齿 块的壁厚小于所述第二竖齿块的壁厚;
所述第一竖齿片的数量小于所述第二竖齿片的数量, 和 /或所述第一竖齿 块的数量小于所述第二竖齿块的数量; 以及
所述第一竖齿片与所述第一竖齿块之间的过盈配合的过盈量小于所述第 二竖齿片与所述第二竖齿块之间的过盈配合的过盈量。
12. 如权利要求 1所述的防松脱乳液泵, 其特征在于, 将所述牙套从所述 容器的所述开口松脱的方向与将所述压头从所述牙套打开的方向相反。
13. 如权利要求 9所述的防松脱乳液泵, 其特征在于, 将所述牙套从所述 容器的所述开口松脱的方向与将所述压头从所述牙套打开的方向相反。
14. 如权利要求 1所述的防松脱乳液泵, 其特征在于, 所述汽缸的法兰边 的下表面向下延伸出环形密封塞,所述环行密封塞的外直径大于所述容器的所 述开口的内直径。
15. 如权利要求 14所述的防松脱乳液泵, 其特征在于, 所述环形密封塞 的外侧下部设置有斜面或倒角。
16. 如权利要求 1所述的防松脱乳液泵, 其特征在于, 所述活塞杆的所述 内孔中安装有弹性阀,所述弹性阀以过盈配合方式安装在所述活塞杆的所述内 孔中, 所述弹性阀一端开口, 另一端由薄壁封闭, 所述薄壁上设有 "十字"形 切缝。
17. 一种防松脱乳液泵, 其特征在于, 所述防松脱乳液泵包括: 压头, 所述压头包括压嘴;
牙套, 所述牙套与安装有所述防松脱乳液泵的容器的开口相连接; 汽缸, 所述汽缸的上端与所述牙套相连接, 所述汽缸的另一端伸入所述 容器中;
活塞杆, 所述活塞杆的上端与所述压头相连接, 所述活塞杆的下端伸入 所述汽缸内的空间中, 且所述活塞杆的内孔与所述压头的压嘴的出口相连通; 其中, 所述压嘴相对于所述压头的本体部分可运动。
18. 如权利要求 17所述的防松脱乳液泵, 其特征在于, 所述压嘴可伸缩 地安装在所述压头的所述本体部分上。
19. 如权利要求 18所述的防松脱乳液泵, 其特征在于, 在所述压嘴上设 有拉手, 当所述压嘴缩进所述压头的所述本体部分中时, 所述拉手至少部分地 露出。
20. 如权利要求 17所述的防松脱乳液泵, 其特征在于, 所述压嘴可折叠 地安装在所述压头的所述本体部分上。
21. 如权利要求 20所述的防松脱乳液泵, 其特征在于, 所述压嘴通过铰 链与所述压头的所述本体部分相连。
22. 如权利要求 17所述的防松脱乳液泵, 其特征在于, 所述压嘴可拆卸地 安装在所述压头的所述本体部分上。
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