WO2020140513A1 - 乳液泵 - Google Patents

乳液泵 Download PDF

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Publication number
WO2020140513A1
WO2020140513A1 PCT/CN2019/108973 CN2019108973W WO2020140513A1 WO 2020140513 A1 WO2020140513 A1 WO 2020140513A1 CN 2019108973 W CN2019108973 W CN 2019108973W WO 2020140513 A1 WO2020140513 A1 WO 2020140513A1
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WO
WIPO (PCT)
Prior art keywords
piston rod
spring
emulsion pump
piston
reset mechanism
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.)
Ceased
Application number
PCT/CN2019/108973
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English (en)
French (fr)
Inventor
丁要武
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US17/420,167 priority Critical patent/US11638925B2/en
Priority to JP2021538988A priority patent/JP2022516184A/ja
Priority to BR112021013073-0A priority patent/BR112021013073B1/pt
Priority to KR1020217024221A priority patent/KR102785861B1/ko
Priority to EP19906831.3A priority patent/EP3907151B1/en
Publication of WO2020140513A1 publication Critical patent/WO2020140513A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-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
    • B05B11/10—Pump 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
    • B05B11/1042—Components or details
    • B05B11/1043—Sealing or attachment arrangements between pump and container
    • B05B11/1046—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container
    • B05B11/1047—Sealing 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-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
    • B05B11/10—Pump 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
    • B05B11/1001—Piston pumps
    • B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-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
    • B05B11/10—Pump 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
    • B05B11/1001—Piston pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-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
    • B05B11/10—Pump 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
    • B05B11/1042—Components or details
    • B05B11/1059—Means for locking a pump or its actuation means in a fixed position
    • B05B11/106—Means 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-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
    • B05B11/10—Pump 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
    • B05B11/1042—Components or details
    • B05B11/1073—Springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-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
    • B05B11/10—Pump 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
    • B05B11/1042—Components or details
    • B05B11/1073—Springs
    • B05B11/1074—Springs located outside pump chambers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-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
    • B05B11/10—Pump 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
    • B05B11/1042—Components or details
    • B05B11/1073—Springs
    • B05B11/1077—Springs characterised by a particular shape or material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
    • B65D47/24—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge with poppet valves or lift valves, i.e. valves opening or closing a passageway by a relative motion substantially perpendicular to the plane of the seat
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT; ACCESSORIES THEREFOR, e.g. TOILET ACCESSORIES
    • A47K5/00—Holders or dispensers for soap, toothpaste or the like
    • A47K5/06—Dispensers for soap
    • A47K5/12—Dispensers for soap for liquid or pasty soap
    • A47K5/1202—Dispensers for soap for liquid or pasty soap dispensing dosed volume
    • A47K5/1204—Dispensers for soap for liquid or pasty soap dispensing dosed volume by means of a rigid dispensing chamber and pistons
    • A47K5/1205—Dispensing from the top of the dispenser with a vertical piston
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-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
    • B05B11/10—Pump 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
    • B05B11/1042—Components or details
    • B05B11/1066—Pump inlet valves
    • B05B11/1067—Pump inlet valves actuated by pressure

Definitions

  • the invention relates to an emulsion pump, in particular to an all-plastic emulsion pump.
  • Emulsion pumps are widely used in daily chemical products such as hand sanitizers, shower gels, etc., for pumping products out of containers such as bottles for use.
  • Most of the lotion pumps currently on the market have metal springs. After the user presses the lotion pump to pump a certain amount of product from the container for use, the metal spring can reset the lotion pump for the next time. use.
  • plastic springs include plastic thread springs, plastic bow springs, bellows springs, and so on.
  • plastic springs there are some problems with plastic springs. For example, when the plastic springs are compressed for a long time, they will yield and deform, causing the elastic force of the plastic springs to decay until the spring action cannot be achieved.
  • one solution is to set the all-plastic emulsion pump in the form of an upper lock and make the plastic spring in a free and uncompressed state when the emulsion pump is not in use. .
  • FIG. 29 An exemplary emulsion pump with a plastic spring is shown in FIG. 29.
  • the emulsion pump 1 has a pressure head 10, a mouthpiece 20, a cylinder 30, and a piston rod 40.
  • One end of the spring 50 is connected to the piston 40, and the other end is connected to the cylinder 30.
  • the piston rod 40 moves downward accordingly, thereby compressing the spring 50, and when the pressure applied to the indenter 10 is removed, the indenter 10 is reset by the elastic force of the spring 50.
  • the emulsion pump 1 shown in FIG. 29 is an emulsion pump in the form of an upper lock.
  • the indenter 10 When it is in a non-use state, for example, during the transportation and display of the product, the indenter 10 is at the highest point of its stroke, so that The spring 50 is in a state where the compressive force is relatively small, so that the spring 50 will not be deformed due to compression when it is not in use, resulting in yield deformation and failure.
  • the above emulsion pump is an upper lock type emulsion pump.
  • the emulsion lock pump it is sometimes difficult to meet the packaging requirements of e-commerce transportation, and the emulsion lock pump of the upper lock has a relatively high height in the initial unused state, which also has a relatively high carton height, shelf height, etc. High demands.
  • the present invention is made to solve the above-mentioned problems of the prior art emulsion pump.
  • the purpose of the present invention is to provide an emulsion pump with an improved structure, which can ensure that the plastic spring of the emulsion pump will not be compressed and yield and deform in a non-used state, thereby having a longer service life, and at the same time, it can realize the lower lock , To meet the needs of e-commerce transportation.
  • the lotion pump of the present invention is used to install products on a container to dispense the container.
  • the lotion pump includes a movable portion and a fixed portion. In use, the movable portion can move relative to the container, and the fixed portion remains stationary relative to the container, wherein ,
  • the emulsion pump also includes:
  • An elastic reset mechanism one end of the elastic reset mechanism is in contact with or connected to the movable portion, and the other end of the elastic reset mechanism is fixed to the fixed portion;
  • the switching mechanism is arranged on the movable part or the fixed part, and the switching mechanism is arranged to cooperate with the elastic reset mechanism, so that when the movable part is rotated and/or moved upward in the first direction, one end of the elastic reset mechanism Move to the first position relative to the movable part, so that the elastic reset mechanism is loaded into the standby state, and when the movable part rotates and/or moves downward in the second direction opposite to the first direction, one end of the elastic reset mechanism is opposite When the movable part moves to the second position, the elastic reset mechanism enters a non-standby state.
  • the movement of the moving part such as the pressure head can switch the support base between the first position and the second position to selectively apply a compressive force to the elastic reset mechanism, Or reduce the compression force on the elastic reset mechanism, or even disengage the contact with the elastic reset mechanism. In this way, in the non-use state, the elastic reset mechanism can be compressed little or not.
  • This structure is particularly advantageous for plastic springs, which can extend its service life.
  • the emulsion pump of this structure can realize the form of a lower lock, which can meet the packaging requirements of e-commerce transportation in particular.
  • the switching mechanism is provided on the movable part. Further, the switching mechanism includes a first engaging portion, and a second engaging portion is formed on the elastic reset mechanism. When the movable portion moves relative to the container, the first engaging portion and the second engaging portion cooperate to make the elastic reset mechanism One end moves between the first position and the second position.
  • the elastic reset mechanism includes a spring and a spring support seat, the spring support seat is located at one end of the spring, and the second fitting portion is formed on the spring support seat.
  • one of the first fitting portion and the second fitting portion is a spiral convex strip
  • the other of the first fitting portion and the second fitting portion is a spiral groove
  • the spiral convex strip can be fitted to the spiral In the groove, so that when the movable part rotates, the interaction between the spiral groove and the spiral protrusion moves one end of the elastic reset mechanism between the first position and the second position.
  • the interaction between the spiral groove and the spiral protrusion can simultaneously allow the support base to enter the second Position to load the spring.
  • the spiral convex strip can be released from the spiral groove, and the sizes and relative positions of the spiral convex strip and the spiral groove are set such that as the movable part rotates, the lock Before the head block is aligned with the notch, the spiral convex strip comes out of the spiral groove. In this way, in the second position, the lower end of the protruding strip can abut the support seat, keeping it in the second position, and can prevent the helical groove from being undesired when pressing the pressure head of the emulsion pump Reenter the spiral ridge.
  • the movable part may include an indenter, a piston rod, and a piston, wherein the piston rod is connected to the lower part of the indenter, and a piston is provided on the piston rod, and the fixed part includes a mouthpiece and a cylinder, wherein the cylinder is connected with the mouthpiece, and the piston At least the portion of the rod where the piston is provided extends into the cylinder.
  • the movable part and the fixed part can also be arranged differently from the above manner, for example, the cylinder is the movable part, and the piston rod and the piston are the fixed part.
  • a lock block is formed on one side of the outer circumferential surface of the piston rod and the top of the mouthpiece, and a notch is formed on the other side of the outer circumferential surface of the piston rod and the top of the mouthpiece.
  • the helical convex strip can be released from the helical groove, and the size and relative position of the helical convex strip and the helical groove are set such that, as the piston rod rotates, the Before the lock block is aligned with the notch, the spiral convex strip comes out of the spiral groove.
  • the first mating portion includes a guide bar
  • the second mating portion includes a notch
  • the rotation of the piston rod aligns the guide bar with the notch, thereby allowing one end of the elastic reset mechanism to be in the first position and the second position Between movements.
  • an upper locking block is provided above the guide bar and/or a lower locking block is provided below the guide bar;
  • a stop block is formed above and/or below the second engaging portion, and the stop block cooperates with the upper locking block and/or the lower locking block so that the movable part can only be rotated in a predetermined direction.
  • the switching mechanism includes a first fitting portion, and a second fitting portion is formed on the elastic reset mechanism, wherein the first fitting portion is an inverted snap ring formed on the movable portion, and the movable member is pulled up by , The second mating portion can move over from the first position to the second position and be held in the second position by the top ring.
  • the fixed portion includes a mouthpiece and a cylinder, wherein the cylinder is connected to the mouthpiece, and at least the portion of the piston rod where the piston is provided extends into the interior of the cylinder, wherein one end of the elastic reset mechanism and one of the outer walls of the cylinder
  • the guide block is included, and a notch is formed on one end of the elastic reset mechanism and the other of the outer wall of the cylinder, and the guide block is at least partially accommodated in the notch.
  • the cooperation between the notch and the guide block can ensure that the movement of the support base is a linear movement along the longitudinal direction.
  • the movable portion includes an indenter, a piston rod, and a piston, wherein the piston rod is connected to the lower portion of the indenter, and a piston is provided on the piston rod, wherein the first fitting portion is formed on the piston rod and/or The outer peripheral surface of the piston.
  • the movable part includes an indenter, a piston rod, a piston, and a sleeve, wherein the piston rod is connected to the lower part of the indenter, and a piston is provided on the piston rod, wherein the sleeve is sleeved on the piston rod And/or the outer side of the piston, and a first fitting portion is formed on the outer surface of the sleeve.
  • the elastic reset mechanism includes at least one elastic strip.
  • the elastic reset mechanism further includes: an annular spring upper seat, the upper end of the elastic strip is connected to the spring upper seat, and/or an annular spring lower seat, and the lower end of the elastic strip is connected to the spring lower seat.
  • the elastic strip is connected to the spring upper seat and/or the spring lower seat through the pivoting part, wherein, when the elastic reset device is compressed, the pivoting part pivots and folds.
  • a first guide groove is formed on one of the inner side of the spring upper seat and the fixed portion, and a first guide bar, the first guide groove and the first The guide bar cooperates; and/or a second guide groove is formed on the inner side of the lower spring seat and one of the fixed parts, and a second guide bar is formed on the inner side of the lower spring seat and the other one of the fixed parts, The second guide groove and the second guide bar cooperate.
  • the movement of the elastic reset device can be guided to prevent the spring from deflecting when the emulsion pump is pressed down.
  • the lower part of the fixed portion is provided with a reversed part, and the reversed part fixes the spring lower seat of the spring.
  • the elastic strip when viewed in the axial direction of the emulsion pump, extends around at least a part of the outer periphery of the cylinder.
  • FIG. 1 is a side view of an emulsion pump of the first embodiment of the present invention.
  • FIG. 2 is a partial cross-sectional view of the emulsion pump shown in FIG. 1, showing the internal structure of the emulsion pump.
  • FIG. 3 is a partial perspective view of the emulsion pump shown in FIG. 1, which includes the piston rod, spring and support seat of the emulsion pump.
  • FIG. 4 shows a cross-sectional view of the emulsion pump shown in FIG. 1, wherein the emulsion pump is in a locked state.
  • FIG. 5 shows another cross-sectional view of the emulsion pump shown in FIG. 1, wherein the emulsion pump is in a standby state.
  • FIG. 6a to 6d show the support base of the emulsion pump shown in FIG. 1, wherein FIG. 6a is a cross-sectional view of the support base, FIG. 6b is another cross-sectional view of the support base, FIG. 6c is a top view of the support base, and FIG. 6d is the support base Perspective view.
  • FIG. 7a and 7b show the piston rod of the emulsion pump shown in FIG. 1, wherein FIG. 7a is a side view of the piston rod 150, and FIG. 7b is a front view of the piston rod.
  • Figures 8a to 8c show perspective views of the interaction of the bearing seat and the piston rod, wherein in Figure 8a, the bearing seat is in a first position relative to the piston rod, and in Figure 8b, the bearing seat is moved in a second position relative to the piston rod And in Fig. 8c, the support base has reached the second position.
  • FIG. 9a-9f show the spring of the emulsion pump shown in FIG. 1, wherein FIG. 9a is a front view of the spring, FIG. 9b is a perspective view of the spring, FIG. 9c is a top view of the spring, FIG. 9d is a bottom view of the spring, and FIG. 9e A schematic diagram of the state where the spring surrounds the cylinder is shown, and FIG. 9f shows a cross-sectional view taken along line AA in FIG. 9e.
  • FIG. 10 is a front view of the cylinder of the emulsion pump shown in FIG.
  • FIG. 11a and 11b show the mouthpiece of the lotion pump shown in FIG. 1, wherein FIG. 11a is a front view of the mouthpiece, and FIG. 11b is a top view of the mouthpiece.
  • FIG. 12a and 12b show cross-sectional views of an emulsion pump of a second embodiment of the present invention, where FIG. 12a shows the locked state of the emulsion pump and FIG. 12b shows the standby state of the emulsion pump.
  • FIGS. 12a and 12b show the support base of the emulsion pump shown in FIGS. 12a and 12b, wherein FIG. 13a is a top view of the support base, FIG. 13b is a cross-sectional view of the support base, FIG. 13c is another cross-sectional view of the support base, and FIG. 13d It is a perspective view of the support base.
  • FIGS. 12a and 12b show the piston rod of the emulsion pump shown in FIGS. 12a and 12b, wherein FIG. 14a is a front view of the piston rod and FIG. 14b is a perspective view of the piston rod.
  • Figures 15a and 15b show perspective views of the interaction of the bearing seat and the piston rod, where in Figure 15a the bearing seat is in a first position relative to the piston rod, and in Figure 15b the bearing seat is in a second position.
  • FIG. 16a and 16b show cross-sectional views of an emulsion pump of a third embodiment of the present invention, where FIG. 16a shows the locked state of the emulsion pump and FIG. 16b shows the standby state of the emulsion pump.
  • Fig. 17 is a partially enlarged view of part A in Fig. 16b.
  • Figure 18a shows a cross-sectional view of an emulsion pump of a fourth embodiment of the invention.
  • Fig. 18b shows a perspective view of the emulsion pump shown in Fig. 18a.
  • FIG. 19a and 19b show cross-sectional views of an emulsion pump of a fifth embodiment of the present invention, where FIG. 19a shows the locked state of the emulsion pump and FIG. 19b shows the standby state of the emulsion pump.
  • Fig. 20 shows a side view of the head of the emulsion pump in Figs. 19a and 19b.
  • Figure 21 shows a cross-sectional view of the piston rod of the emulsion pump of Figures 19a and 19b.
  • FIG. 22 shows a cross-sectional view of the piston of the emulsion pump of FIGS. 19a and 19b.
  • FIG. 23 shows a sectional view of the piston rod of FIG. 21 and the piston of FIG. 22 assembled together.
  • FIG. 24 shows a cross-sectional view of a piston rod in an emulsion pump with a modified structure.
  • Fig. 25a shows a top view of the sleeve in the emulsion pump of the deformed structure.
  • Figure 25b shows a cross-sectional view of the sleeve of Figure 25a.
  • FIG. 26 shows a cross-sectional view of the piston in the emulsion pump of this modified structure.
  • FIG. 27 shows a sectional view of the piston rod, the sleeve and the piston in FIGS. 24 to 26 assembled together.
  • FIG. 28a and 28b show cross-sectional views of an emulsion pump of a sixth embodiment of the present invention, where FIG. 28a shows the locked state of the emulsion pump and FIG. 28b shows the standby state of the emulsion pump.
  • Figure 29 shows a cross-sectional view of a prior art emulsion pump.
  • FIG. 1 to 11b show an emulsion pump 100 according to the first embodiment of the present invention.
  • the emulsion pump 100 is provided with a relaxation mechanism.
  • FIG. 1 shows a side view of the emulsion pump 100
  • FIG. 2 shows a partially cut perspective view of the emulsion pump 100, from which the internal structure of the emulsion pump 100 can be seen.
  • the lotion pump 100 includes an indenter 110, a mouthpiece 120, and a cylinder 130.
  • the cylinder 130 is connected to the mouthpiece 120, and an elastic reset mechanism such as a spring 140 is provided around the outer periphery of the cylinder 130 outside the cylinder 130.
  • the emulsion pump 100 further includes a piston rod 150. One end of the piston rod 150 is connected to the pressure head 110, and the other end is connected with a piston, and extends into the cylinder 130.
  • the emulsion pump 100 of the present invention further includes a support seat 160 which is disposed around the piston rod 150 in the cylinder 130, so that the upper end of the spring 140 is supported by the support seat 160, and the lower end is supported by the cylinder 130, Specifically, it is supported under the cylinder 130.
  • the pressure head 110 can drive the piston rod 150 to communicate with the piston on the piston rod 150 to move relative to the cylinder 130, the mouthpiece 120, etc.
  • the pressure head 110, the piston rod 150, and the piston on the piston rod 150 can be considered to constitute at least a part of the movable part of the emulsion pump 100, and correspondingly, the cylinder 130 and the mouthpiece 120 constitute the emulsion pump At least a portion of 100 is fixed.
  • FIG. 3 shows the connection relationship between related components that play a relaxing role in the emulsion pump 100 of the present invention.
  • 4 and 5 respectively show cross-sectional views of the emulsion pump 100 in an unused state and an open state.
  • each component of the emulsion pump 100 of the first embodiment will be described below, and on the basis of this, the interconnection and interaction between the components will be described in conjunction with FIGS. 3 to 5 to clearly describe the first The structure and operation principle of the emulsion pump 100 of the embodiment.
  • the function of the relaxation mechanism is realized through the interaction between the piston rod 150 and the support base 160.
  • the details are as follows.
  • FIGS. 6a to 6d show various views of the support base 160 of the emulsion pump 100 of the first embodiment, wherein FIGS. 6a and 6b are cross-sectional views of the support base 160 taken from different directions, and FIG. 6c is the support base 160. A top view, and FIG. 6d is a perspective view of the support base 160.
  • the shape of the support base 160 is substantially ring-shaped, which is disposed outside the piston rod 150 around the piston rod 150, or sleeved outside the piston rod 150 (see FIG. 2).
  • At least one, preferably a pair of opposed guide blocks 161 are provided on the outside of the support base 160.
  • the guide blocks 161 cooperate with the notch 131 in the cylinder 130 to limit the movement of the support base 160, which will This is described in more detail below.
  • At least one helical groove 162 is provided inside the annular body of the support base 160.
  • the support base 160 includes two spiral grooves 162 disposed oppositely.
  • on the outer peripheral surface of the piston rod 150 is provided at least one helical convex strip 151 that can match the helical groove 162, for example, as shown in FIGS. 7a and 7b Illustrated pair of spiral ridges 151.
  • an annular flange 153 is further provided above the helical convex strip 151.
  • the piston rod 150 is also provided with a lock block 152 which cooperates with a notch 121 formed on the mouthpiece 120, specifically on the top of the mouthpiece 120, to allow the indenter 110 to be in a locked state and a standby state Handover, as described in more detail below.
  • FIG. 8a to 8c are schematic perspective views showing the cooperation between the piston rod 150 and the support base 160.
  • the support base 160 can be opposite to the piston rod 150 Move down, as shown in Figure 8b.
  • the helical convex strip 151 of the piston rod 150 can be detached from the helical groove 162 of the support base 160, and the lower end surface of the helical convex strip 151 abuts on the support base 160 On the surface, as shown in Fig. 8c. In this way, the spring 140 can be brought into the compressed standby state from the non-standby state.
  • FIG. 9a-9d show various views of the spring 140, wherein FIG. 9a shows a front view of the spring 140, FIG. 9b shows a perspective view of the spring 140, FIG. 9c shows a top view of the spring 140, and 9d Then, a bottom view of the spring 140 is shown.
  • the spring 140 has a ring-shaped spring upper seat 141 and a ring-shaped spring lower seat 142, and two ends of at least one elastic bar 143 are respectively connected to the spring upper seat 141 and the spring lower seat 142.
  • the spring 140 shown in the figure includes two elastic strips 143, but those skilled in the art will know that any suitable number of elastic strips 143 may be provided as needed, for example, one elastic strip 143 or three or more elastic strips 143.
  • a pivot portion 146 may be preferably provided at the end of the elastic bar 143 connected to the upper spring seat 141 and/or the lower spring seat 142.
  • the pivoting portion 146 is in the shape of a sheet. When the spring 140 is compressed, the pivoting portion 146 can pivot and fold onto the spring upper seat 141/spring lower seat 142.
  • At least one guide groove 144 is formed inside the spring upper seat 141 of the spring 140, which cooperates with the spring guide bar 132 (see FIG. 10) formed on the outer circumferential surface of the cylinder 130, to The movement of the guide spring 140 is described in detail below.
  • a guide groove 145 may also be formed on the inner side of the spring lower seat 142 of the spring 140, so that the corresponding spring guide bar 132 on the cylinder 130 can be easily fitted.
  • the shape of the elastic strip 143 is set such that the projection of the elastic strip in the axial direction of the emulsion pump 100 is substantially arc-shaped.
  • the elastic strip 143 extends around at least a part of the outer periphery of the cylinder, as shown in FIGS. 9e and 9f. In this way, the structure of the lotion pump 100, especially the structure of the portion including the spring 140 below the mouthpiece 120 can be made more compact.
  • FIGS. 9a-9f show the preferred structure of the spring 140.
  • the structure can also be modified or some parts of the structure can be omitted.
  • the guide groove 144 and the guide groove 145 respectively provided in the spring upper seat 141 and the spring lower seat 142 may be omitted.
  • the spring 140 may not include a spring upper seat 141 and a spring lower seat 142, and each elastic bar 143 is fixed on the support seat 160 and the lower part of the cylinder 130, respectively.
  • FIG. 10 shows a front view of the cylinder 130.
  • a groove 131 is formed on the outer wall of the cylinder 130, and the guide block 161 of the support base 160 is slidably accommodated in the groove 131, so that the support base 160 can only move longitudinally relative to the cylinder 130 Without turning.
  • a spring guide bar 132 is also provided on the outer periphery of the cylinder 130, which cooperates with the guide groove 144 in the spring upper seat 141 of the spring 140 and/or the guide groove 145 in the spring lower seat 142 to guide The role of the spring 140.
  • the arrangement of the guide groove and the guide bar can also be interchanged, that is, the guide bar is formed on the spring upper seat 141/spring lower seat 142, and the guide groove is formed on the cylinder 130.
  • a bottom part 133 is formed at the bottom of the outer wall of the cylinder 130, which cooperates with the spring lower seat 142 of the spring 140 to fix the spring lower seat 142 and prevent the spring lower seat 142 from moving upward relative to the cylinder 130.
  • 11a and 11b show a front view and a top view of the mouthpiece 120, respectively.
  • a notch 121 is formed on the mouthpiece 120, especially on the top of the mouthpiece 120.
  • the emulsion pump 100 is in a locked state, which can be used for transportation and sales of the emulsion pump 100.
  • the support seat 160 in the emulsion pump 100 is located at the highest point of its stroke, and the spiral groove 162 of the support seat 160 cooperates with the spiral protrusion 151 in the piston rod 150.
  • the user rotates the indenter 110 in the opening direction to drive the piston rod 150 connected to the indenter 110 to rotate together.
  • the spiral protrusion 151 on the outer surface of the piston rod 150 interacts with the spiral groove 162 on the support base 160 to move the support base 160 downward relative to the piston rod 150, ie It moves in the direction toward the spring 140 until the helical convex strip 151 is disengaged from the helical groove 162.
  • the support base 160 applies a compressive force to the spring 140, and the compressive force gradually increases.
  • the lock block 152 With the rotation of the piston rod 150, the lock block 152 can also be moved to a position aligned with the notch 121 on the top of the mouthpiece 120. At this time, the lock block 152 can pass through the notch 121, so that the indenter 110 springs to a stand-by state.
  • the pressure head 110 is pressed down to the lowest point of its stroke, and then the pressure head 110 is rotated in the closing direction opposite to the opening direction.
  • the helical convex strip 151 of the piston rod 150 will refit into the helical concave groove 162 of the support base 160, and with the rotation of the piston rod 150, the helical convex strip 151 and the helical concave groove 162 As a result, the support base 160 is moved upward, that is, in the direction away from the spring 140, so that the compressive force applied to the spring 140 is reduced, so that the spring 140 returns to the non-standby state again.
  • the support base 160 can be released from contact with the spring 140.
  • the spiral protrusion 151 can switch the spring 140 between the non-standby state and the standby state, that is, it functions as a switching mechanism.
  • the helical convex strip 151 functions to separate the spring 140 from the movable part of the emulsion pump 100 through the support base 160.
  • the relative position and size of the helical convex strip 151 and the lock block 152 in the piston rod 150 are set so that before the lock block 152 is aligned with the notch 121 of the mouthpiece 120, the helical convex strip 151 is removed from the spiral The groove 162 comes out. In this way, it is possible to prevent the spiral protrusion 151 from entering the spiral groove 162 during the process of pressing the indenter 110 to pump the product.
  • the longitudinal length of the lock block 152 is preferably set such that during the process of pressing the indenter 110 to pump the product and the indenter 110 rebound, the lock block 152 always moves in the gap 121, so that, in During use, the spiral protrusion 151 can be prevented from entering the spiral groove 162 due to the rotation of the indenter 110.
  • the switching mechanism may also be formed on any part of the movable part of the emulsion pump 100 Other components and other positions are also within the scope of the disclosure.
  • the switching mechanism may also be formed on the fixed part of the emulsion pump 100, for example, a spiral ridge may be formed on the inner wall of the cylinder 130, and correspondingly, a spiral groove may be formed on the outer periphery of the support base 160.
  • the piston rod formed with spiral protrusions is the fixed part of the emulsion pump, and the cylinder is the movable part (this case will be explained in detail in the following examples). None of this goes beyond the disclosed scope of the present invention.
  • the lotion pump 200 includes an indenter 210, a mouthpiece 220, a cylinder 230, a spring 240, and a piston rod 250.
  • the cylinder 230 is provided with a support base 260.
  • a notch 231 is formed in the outer wall of the cylinder 230, and the guide block 261 of the supporting seat 260 is slidably accommodated in the notch 231 so that the supporting seat 260 can only be longitudinally relative to the piston rod 250 movement.
  • FIG. 13a to 13d show various views of the support base 260 in the emulsion pump 200 of the second embodiment, wherein FIG. 13a shows a top view of the support base 260, and FIG. 13b shows a cross-sectional view of the support base 260. 13c shows another cross-sectional view of the support base 260, and FIG. 13d shows a perspective view of the support base 260.
  • the support base 260 in the emulsion pump 200 of the second embodiment is also substantially ring-shaped, and has at least one guide block 261 (shown in the figure are two guide blocks 261 arranged oppositely). At least one, preferably a pair of opposed support seat notches 262 is formed inside the support seat 260. At least one support block 263 is also preferably formed on the inner side of the support base 260, and the support block 263 is preferably formed on the upper and lower parts of the inner side of the support base 260, respectively.
  • the guide bar 251 is formed on the outer periphery of the piston rod 250 corresponding to the support seat notch 262 provided in the support seat 260.
  • an upper lock block 252 and a lower lock block 253 are preferably formed on the upper and lower sides of the guide bar 251, respectively.
  • the upper locking block 252 and the lower locking block 253 cooperate with the support block 263, so that the piston rod 250 can only rotate in a preset direction.
  • the piston rod 250 and the support base 260 cooperate with each other as shown in FIGS. 15a and 15b.
  • the operation mode of the emulsion pump 200 of the second embodiment will be described below with reference to FIGS. 12a, 12b, 15a and 15b.
  • the support seat 260 is located above the guide bar 251 of the piston rod 250, and the support seat notch 262 is offset from the guide bar 251, thereby making the support seat 260 relative to the piston
  • the position of the rod 250 is fixed.
  • the indenter 210 When the emulsion pump 200 needs to be used, rotate the indenter 210 in the opening direction to align the support base notch 262 with the guide bar 251. At this time, the indenter 210 can be manually pulled up to the highest point of its stroke, the support base 260 It moves below the guide bar 251 relative to the piston rod 250. Then, the indenter 210 continues to be rotated, so that the support seat notch 262 is offset from the guide bar 251 again, so that the guide bar 251 restricts the support seat 260 to a position below it. At this time, the spring 240 is loaded so that the pumping operation can be performed by pressing the indenter 210.
  • the indenter 210 can be rotated in the reverse direction to align the support notch 262 with the guide bar 251 again, and then the indenter 210 can be manually pressed to its stroke The lowest point, and then continue to rotate the indenter 210, so that the support base notch 262 and the guide bar 251 are offset, so that the guide bar 251 keeps the support base 260 at a position above it.
  • the upper and lower locking blocks 252 and 253 and the supporting block stop 263 are provided in the supporting seat 260, the upper and lower locking blocks 252 and 253 and the supporting block stop 263 The interaction between them allows the user to rotate the indenter 210 in a predetermined direction.
  • 16a to 17 show the emulsion pump 300 of the third embodiment of the present invention.
  • the technical features that are the same as or similar to those of the first and second embodiments are not described in detail, and only the technologies that are not disclosed in the first and second embodiments of the emulsion pump 300 of the third embodiment are only described.
  • Features are described. Unless there is a contrary expression or a structural conflict, the technical features disclosed in the first and second embodiments are also applicable to the third embodiment.
  • the emulsion pump 300 includes a pressure head 310, a mouthpiece 320, a cylinder 330, a spring 340, and a piston rod 350, and the emulsion pump 300 also includes a support base 360.
  • an inverted ring 351 is formed on the piston rod 350, and the inverted ring 351 is formed with a first inclined surface 352 facing upward, and accordingly, a downward facing surface is formed on the support base 360 ⁇ 361.
  • the indenter 310 In the locked position shown in FIG. 16a, the indenter 310 is at the lowest point of its travel, and the support base 360 is above the reverse snap ring 351. After rotating the indenter 310 to the open position, the indenter 310 is pulled up to the highest point of its stroke, in the process, the reverse ring 351 passes over the support base 360 and reaches above the support base 360. At this time, the structure of the reverse ring 351 prevents the support base 360 from returning to the top of the reverse ring 351 again. Thus, the emulsion pump 300 is maintained in the standby state shown in FIG. 16b.
  • 18a and 18b show an emulsion pump 400 of the fourth embodiment of the present invention.
  • the technical features that are the same as or similar to those in the first to third embodiments are not described in detail, but only the technical features that are not disclosed in the first to third embodiments in the emulsion pump 400 of the fourth embodiment are performed. description. Unless there is a contrary expression or a structural conflict, the technical features disclosed in the first to third embodiments are also applicable to the fourth embodiment.
  • the emulsion pump 400 of the fourth embodiment is basically the same as the emulsion pump 100 of the first embodiment, except that the spring upper seat 141 and the spring lower seat 142 of the spring 140 are omitted.
  • the upper end of the elastic bar of the spring 440 is directly connected to the support base 460, and the lower end of the elastic bar is directly connected to the lower part of the cylinder 430.
  • 19 to 22 show an emulsion pump 500 of the fifth embodiment of the present application.
  • the technical features that are the same as or similar to those in the first to fourth embodiments are not described in detail, but only the technical features that are not disclosed in the first to fourth embodiments in the emulsion pump 500 of the fifth embodiment are performed. description. Unless there is a contrary expression or a structural conflict, the technical features disclosed in the first to fourth embodiments are also applicable to the fifth embodiment.
  • FIG. 19a shows a cross-sectional view of the emulsion pump 500 in the lower locked state
  • FIG. 19b shows a cross-sectional view of the emulsion pump 500 in the standby state.
  • the lower portion of the pressure head 510 of the emulsion pump 500 is provided with external threads, and is fixed at the locked position by a threaded connection with the mouthpiece 520.
  • the external thread 511 on the indenter 510 is more clearly shown in FIG. 20. Accordingly, an internal thread matching the external thread 511 is formed in the opening of the mouthpiece 520.
  • the piston rod 550 and the piston 580 of the emulsion pump 500 of the fifth embodiment are formed separately and connected together.
  • a spiral rib as a switching member may be formed on the outer surface of any one of the piston rod 550 and the piston 580, or a part on the outer surface of the piston rod 550, and the other part on the outer surface of the piston 580.
  • a spiral rib 581 is formed on the outer surface of the piston 580.
  • FIGS. 24 to 27 show the modification of the partial structure in the fifth embodiment.
  • the piston rod 650 and the piston 680 are also formed separately and then connected together.
  • a sleeve 670 is additionally provided, and a spiral protrusion 671 or other type is formed on the outer surface of the sleeve 670 Switching parts.
  • the sleeve 670 is sleeved on the outer surfaces of the piston rod 650 and the piston 680 connected together, as shown in FIG. 27.
  • a structure such as a convex portion 672 may also be preferably formed on the inner surface of the sleeve 670 to facilitate a tight fit with the outer surface of the piston rod 650 and/or piston 680.
  • FIG. 28a shows a cross-sectional view of the emulsion pump 700 in the lower lock state
  • FIG. 28b shows a cross-sectional view of the emulsion pump 700 in the standby state.
  • the emulsion pump 700 includes a pressure head 710, and a cylinder 730 is connected to the lower portion of the pressure head 710. Therefore, in the sixth embodiment, the movement of the pressure head 710 (for example, rotation or up and down movement) drives the air cylinder 730 to move together, so that the pressure head 710 and the air cylinder 730 constitute at least a part of the movable part of the emulsion pump.
  • a spring bracket 770 is connected to the mouthpiece 720, and one end of the spring 750 (specifically the lower end in FIGS. 28a and 28b) is supported on the spring bracket 770, and the other end of the spring 750 (Upper end in the figure) is supported on the spring support 760.
  • a piston rod 740 is also fixedly connected to the spring bracket 770, and the piston on one end of the piston rod 740 extends into the cylinder 730.
  • a first convex portion 731 and a second convex portion 732 are formed on the outer wall of the cylinder 730, and a groove 761 is formed on the inner surface of the spring support 760.
  • the groove 761 may be engaged with one of the first convex portion 731 and the second convex portion 732, respectively.
  • the spring 750 is in an unloaded state, and when the groove 761 is engaged with the second convex portion 732 located below, or even When located below the second convex portion 732, the spring 750 enters a loaded state.
  • the sixth embodiment it is the first convex portion 731 and the second convex portion 732 formed on the outer wall of the cylinder 730 that function as the switching mechanism.
  • the spiral convex strips, guide strips and other implementation structures mentioned in the above embodiments can also be applied to the sixth embodiment.

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Abstract

一种乳液泵(100、200、300、400、500、700)，包括活动部分和固定部分，在活动部分和固定部分上形成有切换机构，随着活动部分的旋转或上下运动，该切换机构能够使乳液泵(100、200、300、400、500、700)的弹性复位机构在备用状态和非备用状态之间切换。该乳液泵(100、200、300、400、500、700)的结构可防止弹簧(140、240、340、440、750)因长期压缩而屈服变形，同时又能够实现下位锁头的形式。

Description

乳液泵 技术领域
本发明涉及一种乳液泵，特别涉及一种全塑乳液泵。
背景技术
乳液泵广泛地应用于诸如洗手液、沐浴露之类的日化产品中，用于从诸如瓶子之类的容器中将产品泵送出来，以供使用。目前市场上销售的乳液泵大部分带有金属弹簧，使用人在对乳液泵进行按压以将一定量的产品从容器中泵出供使用之后，该金属弹簧能够使乳液泵复位，以备下一次使用。
近年来，随着对环保要求的提高，要求对乳液泵进行回收，以实现资源的可循环利用。为了方便乳液泵的回收再利用，在乳液泵制造领域中提出了用塑料弹簧代替金属弹簧，即全塑乳液泵。塑料弹簧通常的形式包括塑料螺纹弹簧、塑料弓形弹簧、波纹管式弹簧等等。不过，塑料弹簧存在一些问题，比如当塑料弹簧受到长时间压缩后，会发生屈服变形，使塑料弹簧的弹力衰减，直至无法实现弹簧作用。为避免塑料弹簧因受到长时间压缩而失效，一种解决方案是将全塑乳液泵设置成上位锁头形式，并使乳液泵在处于非使用状态时，塑料弹簧处于不受压迫的自由放松状态。
图29中示出了一种示例性的具有塑料弹簧的乳液泵。其中，乳液泵1具有压头10、牙套20、气缸30和活塞杆40，弹簧50的一端连接在活塞40上，另一端连接在气缸30上。当按压压头10时，活塞杆40随之向下运动，从而使弹簧50压缩，而当撤去施加在压头10上的压力时，在弹簧50的弹性力作用下，压头10复位。在图29中所示出的乳液泵1为上位锁头形式的乳液泵，在处于非使用状态时，例如在产品的运输和陈列售卖过程中，压头10处于其行程的最高点，从而使得弹簧50处于压缩力较小的状态，这样，可使弹簧50不会在非使用状态时因为受压缩，导致屈服变形而失效。
可以看到，上述乳液泵是上位锁头型的乳液泵。对于上位锁头的乳液泵来说，有时难以满足电商运输对包装的要求，而且上位锁头的乳液泵在初始的未使用状态中的高度比较高，从而对纸箱高度、货架高度等也有较高的要求。
因此，在乳液泵领域中，仍然需要进一步改进结构的带有塑料弹簧的乳液泵，其能够解决塑料弹簧弹力衰减的问题，同时又能够满足电商运输的需求。
发明内容
本发明是为解决以上所述的现有技术乳液泵所存在的问题而做出的。本发明的目的是提供一种改进结构的乳液泵，其能够确保乳液泵的塑料弹簧在非使用状态下不会受压而屈服变形，从而有更长的使用寿命，同时又能实现下位锁头，满足电商运输的需求。
本发明的乳液泵是用于安装在容器上以分配容器中的产品，该乳液泵包括活动部分和固定部分，在使用中，活动部分能够相对于容器运动，固定部分相对于容器保持静止，其中，该乳液泵还包括：
弹性复位机构，弹性复位机构的一端与活动部分相接触或相连接，而弹性复位机构的另一端固定于固定部分；以及
切换机构，切换机构设置在活动部分或固定部分上，且切换机构被设置成与弹性复位机构相配合，以使得当使活动部分沿第一方向转动和/或向上运动时，弹性复位机构的一端相对于活动部分运动到第一位置，从而使弹性复位机构加载而进入备用状态，而当活动部分沿与第一方向相反的第二方向转动和/或向下运动时，弹性复位机构的一端相对于活动部分运动到第二位置，使弹性复位机构进入非备用状态。
在上述结构的乳液泵中，通过设置切换机构，使得诸如压头之类的运动部件的运动能使支承座在第一位置和第二位置之间切换，以选择对弹性复位机构施加压缩力，或者减小对弹性复位机构的压缩力，甚至脱开与弹性复位机构的接触。这样，在非使用状态，可使弹性复位机构受压很小或不受压。这种结构对于塑料弹簧来说尤其有利，可延长其使用寿命。并且，可以看到该结构的乳液泵可实现下位锁头的形式，从而能够满足特别是电商运输对包装的要求。
在一种具体的形式中，切换机构设置在活动部分上。其中进一步地，切换机构包括第一配合部，在弹性复位机构上形成有第二配合部，当活动部分相对于容器运动时，第一配合部与第二配合部相协作，使弹性复位机构的一端在第一位置和第二位置之间运动。
较佳地，弹性复位机构包括弹簧和弹簧支承座，弹簧支承座位于弹簧的一端处，第二配合部形成在弹簧支承座上。
进一步较佳地，第一配合部和第二配合部中的一个为螺旋状凸条，第一配合部和第二配合部中的另一个为螺旋状凹槽，螺旋状凸条能够配合到螺旋状凹槽中，从而当活动部分旋转旋转时，螺旋状凹槽与螺旋状凸条之间的相互作用使弹性复位机构的一端在第一位置和第二位置之间运动。
对于上述这种具体结构，在旋转压头以使其从锁头状态转变为待用状态的过程中，通过螺旋状凹槽和螺旋状凸条之间的相互作用可同时使支承座进入第二位置，从而对弹簧加载。
进一步地，随着活动部分的旋转，螺旋状凸条能够从螺旋状凹槽脱出，并且螺旋状凸条和螺旋状凹槽的尺寸和相对位置被设置成，随着活动部分的旋转，在锁头块与缺口对准之前，螺旋状凸条从螺旋状凹槽脱出。这样，在第二位置中，凸条的下端可抵接住支承座，使其保持在第二位置上，并且可防止在按压乳液泵的压头时螺旋状凹槽在不期望的情况下又重新进入螺旋状凸条中。
具体地，活动部分可包括压头、活塞杆和活塞，其中活塞杆连接在压头的下部，且在活塞杆上设置有活塞，固定部分包括牙套和气缸，其中气缸与牙套相连接，且活塞杆中至少设置有活塞的部分延伸到气缸内部。
当然，活动部分和固定部分也可以与以上方式不同地设置，例如气缸为活动部分，而活塞杆和活塞为固定部分。
较佳地，在活塞杆的外周面和牙套的顶部的一方上形成有锁头块，而在活塞杆的外周面和牙套的顶部的另一方上形成有缺口，通过旋转活塞杆，能够使锁头块对准缺口，从而压头和活塞杆能够向上运动。
通过上/下锁定块以及支承座挡块的设置，可限制压头和活塞杆的旋转方向，防止误操作。
较佳地，随着活塞杆的旋转，螺旋状凸条能够从螺旋状凹槽脱出，并且螺旋状凸条和螺旋状凹槽的尺寸和相对位置被设置成，随着活塞杆的旋转，在锁头块与缺口对准之前，螺旋状凸条从螺旋状凹槽脱出。
进一步较佳地，第一配合部包括导向条，第二配合部包括缺口，通过活塞杆的旋转，使导向条与缺口对准，进而允许弹性复位机构的一端在第一位置 和第二位置之间运动。
此外，在导向条上方还设置有上锁定块和/或在导向条下方还设置有下锁定块；以及
在第二配合部的上方和/或下方形成有挡块，挡块与上锁定块和/或下锁定块相配合，使得只能沿预先设定的方向旋转活动部分。
在另一种具体结构中，切换机构包括第一配合部，在弹性复位机构上形成有第二配合部，其中，第一配合部是形成在活动部分上的倒扣环，通过上拉活动部件，第二配合部能够越过倒扣环而从第一位置运动到第二位置，并由倒扣环保持在第二位置。
在较佳的结构中，固定部分包括牙套和气缸，其中气缸与牙套相连接，且活塞杆中至少设置有活塞的部分延伸到气缸内部，其中在弹性复位机构的一端和气缸的外壁中的一方包括导向块，并且在弹性复位机构的一端和气缸的外壁中的另一方上形成有缺槽，导向块至少部分地容纳在缺槽中。
缺槽和导向块之间的相互配合可保证支承座运动是沿着纵向的直线运动。
在另一较佳结构中，活动部分包括压头、活塞杆和活塞，其中活塞杆连接在压头的下部，且在活塞杆上设置有活塞，其中第一配合部形成在活塞杆和/或活塞的外周面上。
在一种具体的方式中，活动部分包括压头、活塞杆、活塞和套管，其中活塞杆连接在压头的下部，且在活塞杆上设置有活塞，其中，套管套设在活塞杆和/或活塞的外侧，且在套管的外表面上形成第一配合部。
较佳地，弹性复位机构包括至少一个弹性条。
进一步较佳地，弹性复位机构还包括：环状的弹簧上座，弹性条的上端连接在弹簧上座上，和/或环状的弹簧下座，弹性条的下端连接在弹簧下座上。
其中，弹性条通过枢转部连接到弹簧上座和/或弹簧下座，其中，当弹性复位装置受到压缩时，枢转部枢转并折叠。
较佳地，在弹簧上座的内侧和固定部分中的一个上形成有第一导槽，在弹簧上座的内侧和固定部分中的另一个上形成有第一引导条，第一导槽和第一引导条相配合；和/或在弹簧下座的内侧和固定部分中的一个上形成有第二导槽，在弹簧下座的内侧和固定部分中的另一个上形成有第二引导条，第二导槽 和第二引导条相配合。
通过此处导槽和引导条之间的配合，可对弹性复位装置的运动起到引导作用，防止在对乳液泵进行下压操作时弹簧发生偏转。
在较佳的结构中，固定部分的下部设置有倒扣部，倒扣部固定弹簧的弹簧下座。
进一步地，当沿着乳液泵的轴向看时，弹性条围绕着气缸的外周的至少一部分延伸。
附图说明
在附图中：
图1是本发明的第一实施例的乳液泵的侧视图。
图2是图1所示乳液泵的局部剖切图，示出了该乳液泵内部的结构。
图3是图1所示乳液泵的部分立体图，其中包括乳液泵的活塞杆、弹簧和支承座。
图4示出了图1所示乳液泵的剖视图，其中该乳液泵处于锁定状态。
图5示出了图1所示乳液泵的另一种剖视图，其中该乳液泵处于待用状态。
图6a～6d示出了图1所示乳液泵的支承座，其中图6a是支承座的剖视图，图6b是支承座的另一剖视图，图6c是支承座的俯视图，而图6d是支承座的立体图。
图7a和7b示出了图1所示乳液泵的活塞杆，其中图7a是活塞杆150的侧视图，图7b是活塞杆的正视图。
图8a～8c示出了支承座和活塞杆相互作用的立体图，其中在图8a中，支承座相对于活塞杆处于第一位置，在图8b中，支承座相对于活塞杆向着第二位置运动，而在图8c中，支承座到达了第二位置。
图9a～9f示出了图1所示乳液泵的弹簧，其中图9a是弹簧的正视图，图9b是弹簧的立体图，图9c是弹簧的俯视图，图9d是弹簧的仰视图，图9e示出了弹簧围绕着气缸的状态的示意图，而图9f则示出了沿图9e中的线A-A得到的截面图。
图10是图1所示乳液泵的气缸的正视图。
图11a和11b示出了图1所示乳液泵的牙套，其中图11a是牙套的正视图，图11b是牙套的俯视图。
图12a和12b示出了本发明的第二实施例的乳液泵的剖视图，其中图12a示出了该乳液泵的锁定状态，图12b示出了该乳液泵的待用状态。
图13a～13d示出了图12a和12b所示乳液泵的支承座，其中，图13a是支承座的俯视图，图13b是支承座的剖视图，图13c是支承座的另一剖视图，而图13d是支承座的立体图。
图14a和14b示出了图12a和12b所示乳液泵的活塞杆，其中图14a是活塞杆的正视图，图14b是活塞杆的立体图。
图15a和15b示出了支承座和活塞杆相互作用的立体图，其中在图15a中，支承座相对于活塞杆处于第一位置，而在图15b中，支承座处于第二位置。
图16a和16b示出了本发明的第三实施例的乳液泵的剖视图，其中图16a示出了该乳液泵的锁定状态，图16b示出了该乳液泵的待用状态。
图17是图16b中的部分A的局部放大图。
图18a示出了本发明的第四实施例的乳液泵的剖视图。
图18b示出了图18a所示乳液泵的立体图。
图19a和19b示出了本发明的第五实施例的乳液泵的剖视图，其中图19a示出了该乳液泵的锁定状态，图19b示出了该乳液泵的待用状态。
图20示出了图19a和19b中的乳液泵的压头的侧视图。
图21示出了图19a和19b的乳液泵的活塞杆的剖视图。
图22示出了图19a和19b的乳液泵的活塞的剖视图。
图23示出了图21中的活塞杆和图22中的活塞组装在一起的剖视图。
图24示出了一种变形结构的乳液泵中的活塞杆的剖视图。
图25a示出了该变形结构的乳液泵中的套管的俯视图。
图25b示出了图25a中的套管的剖视图。
图26示出了该变形结构的乳液泵中的活塞的剖视图。
图27示出了图24～26中的活塞杆、套管和活塞组装在一起的剖视图。
图28a和28b示出了本发明的第六实施例的乳液泵的剖视图，其中图28a示出了该乳液泵的锁定状态，图28b示出了该乳液泵的待用状态。
图29示出了一种现有技术的乳液泵的剖视图。
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，并且，除非有相反的说明或者明显有矛盾，以下所述不同的具体实施例方式中的特征都可以任意地组合。这些都落在本发明的保护范围之内。
<第一实施例>
图1～11b示出了本发明的第一实施例的乳液泵100，该乳液泵100中设置有放松机构。其中，图1示出了乳液泵100的侧视图，图2示出了乳液泵100的局部剖切的立体图，从中可以看到乳液泵100的内部结构。
乳液泵100包括压头110、牙套120和气缸130。气缸130与牙套120相连接，在气缸130外侧围绕着气缸130的外周设置有诸如弹簧140之类的弹性复位机构。进一步地，如图2所示，乳液泵100还包括活塞杆150，活塞杆150一端连接于压头110，另一端上连接有活塞，并伸入到气缸130内部。并且，在本发明的乳液泵100中还包括支承座160，该支承座160在气缸130内围绕着活塞杆150设置，从而弹簧140的上端支承于该支承座160，下端则支承于气缸130、具体地是支承在气缸130的下部。
可以看到，在第一实施例的乳液泵100中，压头110能够带动活塞杆150连通活塞杆150上的活塞一起相对于气缸130、牙套120等运动，而气缸130、牙套120等部件在安装到容器上时，相对于该容器总是保持固定或静止的状态。因此，在该乳液泵100中，压头110、活塞杆150和活塞杆150上的活塞可以认为构成了乳液泵100的至少一部分活动部分，相对应地，气缸130和牙套120则构成了乳液泵100的至少一部分固定部分。
图3中示出了本发明的乳液泵100中起到放松作用的相关部件之间的连接关系。图4和5则分别示出了处于未使用状态和打开状态的乳液泵100的剖 视图。
下面将对第一实施例的乳液泵100的各部件的具体结构分别进行说明，并在此基础上结合图3～5来描述各部件之间的相互连接和作用关系，以清楚地描述第一实施例的乳液泵100的结构和动作原理。
支承座和活塞杆：
在本发明中，通过活塞杆150和支承座160之间的相互作用来实现放松机构的功能。具体如下所述。
图6a～6d示出了第一实施例的乳液泵100的支承座160的各视图，其中图6a和6b是从不同方向剖切而得到的支承座160的剖视图，图6c是支承座160的俯视图，而图6d则是支承座160的立体图。
从图中可以看到，支承座160的形状为大致环状，其围绕着活塞杆150设置在活塞杆150的外侧，或者说套设在活塞杆150的外侧(见图2)。在支承座160的外侧设置有至少一个、较佳地是一对相对设置的导向块161，该导向块161与气缸130中的缺槽131相互配合作用，以限制支承座160的运动，这将在下文中更加详细地描述。
在支承座160的环状本体的内侧设置有至少一个螺旋状凹槽162。在图6a～6d所示的较佳实施例中，支承座160包括两个相对设置的螺旋状凹槽162。与之相对应地，如图7a和7b所示的，在活塞杆150的外周面上设置有能够与螺旋状凹槽162相匹配的至少一个螺旋状凸条151，例如图7a和7b中所示的一对螺旋状凸条151。较佳地，在螺旋状凸条151的上方还设置有环形凸缘153，当支承座160处于其行程最高点的位置时，该环形凸缘153对支承座160起到止挡作用，防止支承座160继续向上运动而使螺旋状凹槽162与螺旋状凸条151脱开。
活塞杆150上还设置有锁头块152，其与形成在牙套120上的、具体是形成在牙套120的顶部上的缺口121相协作，以允许压头110能够在锁定状态和待用状态之间切换，如以下更详细地描述的。
图8a～8c中示出了活塞杆150和支承座160之间相配合的示意性立体图。具体来说，当旋转压头110进而使与之相连接的活塞杆150旋转时，在螺旋状凹槽162和螺旋状凸条151之间的相互作用下，支承座160能够相对于活塞杆 150向下运动，如图8b所示。并且，进一步地旋转活塞杆150，可使活塞杆150的螺旋状凸条151从支承座160的螺旋状凹槽162脱出，并使螺旋状凸条151的下端面抵接在支承座160的上表面上，如图8c所示的状态。这样，可使弹簧140从非备用状态进入到压缩的备用状态。
弹簧：
图9a～9d示出了弹簧140的各种视图，其中，图9a示出了弹簧140的正视图，图9b示出了弹簧140的立体图，图9c则示出了弹簧140的俯视图，而9d则示出了弹簧140的仰视图。
如图9a～9c所示，弹簧140具有呈环状的弹簧上座141和呈环状的弹簧下座142，至少一个弹性条143的两端分别连接在弹簧上座141和弹簧下座142上。在图中示出的弹簧140包括两个弹性条143，但本领域技术人员可知的是，可以根据需要设置任意合适数量的弹性条143，例如一个弹性条143或者三个或更多个弹性条143。
在弹性条143与弹簧上座141和/或弹簧下座142相连接的端部处，较佳地可设置有枢转部146。该枢转部146为片状，在弹簧140受压时，该片状的枢转部146能够枢转而折叠到弹簧上座141/弹簧下座142上。
较佳地，如图9c所示，在弹簧140的弹簧上座141的内侧形成有至少一个导槽144，其与气缸130的外周面上形成的弹簧引导条132(见图10)相配合，以引导弹簧140的运动，如将在下文中详细描述的。
如图9d所示，在弹簧140的弹簧下座142的内侧也可形成有导槽145，易于气缸130上对应的弹簧引导条132相配合。
另外较佳地，将弹性条143的形状设置成，该弹性条在乳液泵100的轴向上的投影呈大致弧形。换言之，当沿着乳液泵100的轴向看时，弹性条143围绕着所述气缸的外周的至少一部分延伸，如图9e和9f中所示的。这样，可使乳液泵100的结构、尤其是牙套120以下包括弹簧140的部分的结构更加紧凑。
当然，图9a～9f示出的是弹簧140的较佳结构。对于该结构也可进行修改或省略其中的一些结构部分。例如，可以省略分别设置在弹簧上座141和弹簧下座142中的导槽144和导槽145。进一步地，弹簧140也可不包括弹簧上 座141和弹簧下座142，各个弹性条143分别固定在支承座160上以及气缸130的下部。
气缸：
图10示出了气缸130的正视图。如图10所示，在气缸130的外壁上形成有缺槽131，支承座160的导向块161可滑动地容纳在该缺槽131中，从而使得支承座160只能相对于气缸130沿纵向运动，而无法转动。
较佳地，在气缸130的外周上还设置有弹簧引导条132，其与弹簧140的弹簧上座141中的导槽144和/或弹簧下座142中的导槽145相配合，以起到引导弹簧140的作用。
导槽和引导条的设置也可以互换，即，在弹簧上座141/弹簧下座142上形成引导条，而在气缸130上形成导槽。
另外较佳地，在气缸130外壁的底部形成有倒扣部133，其与弹簧140的弹簧下座142相配合，以固定弹簧下座142，防止弹簧下座142相对于气缸130向上运动。
牙套：
图11a和11b分别示出了牙套120的正视图和俯视图。如图所示，在牙套120上、尤其是在牙套120的顶部形成有缺口121。当活塞杆150被旋转而使锁头块152与该缺口121对准时，锁头块152可穿过该缺口121，使得活塞杆150及其所连接的压头110向上弹起，从而乳液泵100进入到待用状态。
乳液泵的操作：
以下将参照图4和5对第一实施例的乳液泵100的操作原理进行说明。
如图4所示，乳液泵100处于锁定状态，该状态可用于乳液泵100的运输、销售等场合。此时，乳液泵100中的支承座160位于其行程的最高点，且支承座160的螺旋状凹槽162与活塞杆150中的螺旋状凸条151相配合。在购买了产品之后要对乳液泵100进行操作以使用产品时，使用人沿打开方向旋转压头110，带动连接在压头110上的活塞杆150一起旋转。
在活塞杆150旋转的过程中，活塞杆150的外表面上的螺旋状凸条151与支承座160上的螺旋状凹槽162相互作用，使支承座160相对于活塞杆150向下运动，即沿朝着弹簧140的方向运动，直到螺旋状凸条151与螺旋状凹槽 162脱开。在此过程中，支承座160对弹簧140施加压缩力，且压缩力逐渐增大。在螺旋状凸条151与螺旋状凹槽162脱开之后，继续旋转活塞杆150，使螺旋状凹槽162与螺旋状凸条151偏移开，使得螺旋状凸条151的下端抵接在螺旋状凹槽162的上表面上。此时，弹簧140从自由非备用状态进入到备用状态。
随着活塞杆150的旋转，还可使锁头块152运动到与牙套120顶部的缺口121对准的位置。此时，锁头块152可穿过缺口121，从而使压头110弹起到待用状态。
在使用之后，若需要乳液泵100重新回到锁定状态，则将压头110下压到其行程的最低点，然后朝着与打开方向相反的关闭方向旋转压头110。在此过程中，活塞杆150的螺旋状凸条151会重新配合到支承座160的螺旋状凹槽162中，并随着活塞杆150的旋转，螺旋状凸条151与螺旋状凹槽162相互作用，使支承座160向上运动，即沿离开弹簧140的方向运动，使施加在弹簧140上的压缩力减小，从而弹簧140重新回到非备用状态。甚至，支承座160能够脱离与弹簧140的接触。在此，可以看到，螺旋状凸条151可使弹簧140在非备用状态和备用状态之间切换，即起到了切换机构的作用。此外，也可认为螺旋状凸条151起到了通过支承座160而使弹簧140与乳液泵100的活动部分相离合的作用。
较佳地，将活塞杆150中的螺旋状凸条151和锁头块152的相对位置和尺寸设置成，在锁头块152与牙套120的缺口121对准之前，螺旋状凸条151从螺旋状凹槽162中脱出。这样，可以防止在按压压头110来泵送产品的过程中，螺旋状凸条151又进入到螺旋状凹槽162中。
此外，锁头块152的纵向长度还较佳地被设置成，在按压压头110来泵送产品以及压头110回弹的过程中，锁头块152始终在缺口121中运动，这样，在使用过程中，可防止因压头110旋转而使螺旋状凸条151又进入到螺旋状凹槽162中。
在此要特别说明的是，虽然在以上所具体描述的结构中，起到切换机构作用的螺旋状凸条151形成在活塞杆上，不过切换机构也可形成在乳液泵100的活动部分的任何其它部件和其它位置上，这同样在本发明的公开范围之内。
进一步地，切换机构也可形成在乳液泵100的固定部分上，例如可在气缸130的内壁上形成螺旋状凸条，而对应地，可在支承座160的外周上形成螺旋凹槽。或者，在某些结构的乳液泵中，形成有螺旋状凸条的活塞杆为乳液泵的固定部分，而气缸为活动部分(该情况将在下面的实施例中详细解释)。这些也都没有超出本发明的公开范围。
<第二实施例>
图12a～15b示出了本发明的第二实施例的乳液泵200。其中，对于与第一实施例的乳液泵100相同或相似的技术特征不再作详细描述，而只对第二实施例的乳液泵200中未在第一实施例中公开的技术特征进行描述。除非有相反的表述或者结构上有冲突，第一实施例中所公开的技术特征也同样适用于第二实施例。
图12a和图12b分别示出了处于锁定状态的乳液泵200和处于待用状态的乳液泵200。乳液泵200包括压头210、牙套220、气缸230、弹簧240和活塞杆250。在气缸230中设置有支承座260。与第一实施例相同，在气缸230的外壁中形成有缺槽231，支承座260的导向块261可滑动地容纳在缺槽231中，以使支承座260只能相对于活塞杆250沿纵向运动。
图13a～13d示出了第二实施例的乳液泵200中的支承座260的各种视图，其中图13a示出了支承座260的俯视图，图13b示出了支承座260的截面图，图13c示出了支承座260的另一个截面图，而图13d则示出的是支承座260的立体图。
第二实施例的乳液泵200中的支承座260也大致呈环状，其具有至少一个导向块261(图中示出的是相对设置的两个导向块261)。在支承座260的内侧形成有至少一个、较佳地为图示的一对相对设置的支承座缺口262。在支承座260的内侧还较佳地形成有至少一个支承座挡块263，较佳地在支承座260的内侧的上部和下部分别形成支承座挡块263。
图14a和14b分别示出了活塞杆250的正视图和立体图。对应于设置在支承座260中的支承座缺口262，活塞杆250的外周上形成有导向条251。此外，在活塞杆250的外周上还较佳地形成有分别位于导向条251上侧和下侧的上锁 定块252和下锁定块253。上锁定块252和下锁定块253与支承座挡块263相配合，使活塞杆250只能沿着预先设定的方向旋转。
活塞杆250和支承座260如图15a和15b所示的那样相互配合。
下面将参照图12a、12b、15a和15b来描述第二实施例的乳液泵200的操作方式。
如图12a和15a所示，当乳液泵200处于锁定状态时，支承座260位于活塞杆250的导向条251的上方，且支承座缺口262与导向条251错开，从而使得支承座260相对于活塞杆250的位置固定。
在需要使用乳液泵200时，向打开方向旋转压头210，使支承座缺口262与导向条251对准，此时，可手动地将压头210向上拉到其行程的最高点，支承座260相对于活塞杆250运动到导向条251下方。然后继续旋转压头210，使支承座缺口262再度与导向条251错开，从而导向条251将支承座260限制在其下方的位置处。此时，弹簧240加载，从而可通过按压压头210来进行泵送动作。
在使用之后，若要乳液泵200重新回到锁定状态，则可沿反方向旋转压头210，使支承座缺口262与导向条251再次对准，然后可手动将压头210压到其行程的最低点，然后继续旋转压头210，使支承座缺口262与导向条251错开，从而由导向条251使支承座260保持在其上方的位置处。
较佳地，在活塞杆250上设置有上锁定块252和下锁定块253以及支承座260中设置有支承座挡块263的情形中，上、下锁定块252和253与支承座挡块263之间的相互作用使得使用人只能按照预先设定的方向旋转压头210。
<第三实施例>
图16a～17示出了本发明的第三实施例的乳液泵300。其中，对于与第一实施例和第二实施例相同或相似的技术特征不再作详细描述，而只对第三实施例的乳液泵300中未在第一和第二实施例中公开的技术特征进行描述。除非有相反的表述或者结构上有冲突，第一和第二实施例中所公开的技术特征也同样适用于第三实施例。
乳液泵300包括压头310、牙套320、气缸330、弹簧340和活塞杆350， 并且乳液泵300中也包括有支承座360。在第三实施例的乳液泵300中，在活塞杆350上形成有倒扣环351，该倒扣环351形成有面向上的第一斜面352，相应地，在支承座360上形成有面向下的第二斜面361。
在图16a所示的锁定位置中，压头310处于其行程的最低点，支承座360位于倒扣环351的上方。在将压头310旋转到打开位置之后，将压头310向上拉至其行程的最高点，在此过程中，倒扣环351向上越过支承座360而到达支承座360的上方。此时，倒扣环351的结构阻止支承座360再度回到倒扣环351的上方。由此，乳液泵300保持在图16b所示的待用状态。
<第四实施例>
图18a和18b示出了本发明的第四实施例的乳液泵400。其中，对于与第一至第三实施例相同或相似的技术特征不再作详细描述，而只对第四实施例的乳液泵400中未在第一至第三实施例中公开的技术特征进行描述。除非有相反的表述或者结构上有冲突，第一至第三实施例中所公开的技术特征也同样适用于第四实施例。
第四实施例的乳液泵400与第一实施例的乳液泵100基本上相同，区别仅在于省略了弹簧140的弹簧上座141和弹簧下座142。换言之，在乳液泵400中，弹簧440的弹性条上端直接连接在支承座460上，而弹性条的下端则直接连接在气缸430的下部。
<第五实施例>
如图19a～22示出了本申请的第五实施例的乳液泵500。其中，对于与第一至第四实施例相同或相似的技术特征不再作详细描述，而只对第五实施例的乳液泵500中未在第一至第四实施例中公开的技术特征进行描述。除非有相反的表述或者结构上有冲突，第一至第四实施例中所公开的技术特征也同样适用于第五实施例。
图19a示出了处于下位锁定状态的乳液泵500的剖视图，图19b示出了处于待用状态的乳液泵500的剖视图。从图19a和19b中可以看到，在第五实施例中，乳液泵500的压头510的下部设有外螺纹，并且通过与牙套520之间的 螺纹连接而固定在锁定位置处。图20中更加清楚地示出了压头510上的外螺纹511。相应地，在牙套520的开口中形成有与外螺纹511相匹配的内螺纹。
进一步地，如图21～23所示，第五实施例的乳液泵500的活塞杆550与活塞580分开形成，并连接在一起。作为切换部件的螺旋状凸条可以形成在活塞杆550和活塞580中的任意一个的外表面上，或者一部分形成在活塞杆550的外表面上，另一部分形成在活塞580的外表面上。在图中所示的结构中，在活塞580的外表面上形成有螺旋状凸条581。
当然，第三实施例中的倒扣环和斜面配合的结构也可应用于图21～23所示的活塞杆与活塞分开形成的情形中。
图24～27示出了第五实施例中部分结构的变形方式。其中，活塞杆650与活塞680也是分开形成，并随后连接在一起。与图21～23所示的结构不同的是，在图24～27所示的结构中，另外设置有套管670，在该套管670的外表面上形成有螺旋状凸条671或其它类型的切换部件。并且，该套管670套设在连接在一起的活塞杆650和活塞680的外表面上，如图27中所示的。在套管670的内表面上还可较佳地形成有诸如凸部672之类的结构，以有助于与活塞杆650和/或活塞680的外表面之间的紧密配合。
<第六实施例>
图28a和28b示出了本申请的第六实施例的乳液泵700。其中，对于与第一至第五实施例及其变形方式相同或相似的技术特征不再作详细描述，而只对第六实施例的乳液泵700特有的技术特征进行描述。而且，除非有相反的表述或者结构上相冲突，第一至第五实施例及其变形方式中所公开的技术特征也同样适用于第五实施例。
图28a示出了处于下位锁头状态的乳液泵700的截面图，图28b示出了处于待用状态的乳液泵700的截面图。从图中可见乳液泵700包括压头710，在压头710的下部连接有气缸730。因而，在第六实施例中，压头710的运动(例如旋转或上下运动)带动气缸730一起运动，从而压头710和气缸730构成了乳液泵的至少一部分活动部分。
此外，在第六实施例的乳液泵700中，在牙套720上连接有弹簧支架770， 弹簧750的一端(在图28a和28b中具体是下端)支承在弹簧支架770上，弹簧750的另一端(在图中为上端)支承在弹簧支承座760上。
在弹簧支架770上还固定连接有活塞杆740，该活塞杆740一端上的活塞伸入到气缸730中。
如图28a和28b所示，在气缸730的外壁上形成有第一凸部731和第二凸部732，而在弹簧支承座760的内表面上形成有凹槽761。随着压头710和气缸730的上下运动，凹槽761可分别与第一凸部731和第二凸部732中的一个相配合。例如，当凹槽761与位于上方的凸部731相配合时(如图28a的状态)，弹簧750处于非加载状态，而当凹槽761与位于下方的第二凸部732相配合，或者甚至位于第二凸部732下方时，弹簧750进入加载状态。
因此，在第六实施例中，起到切换机构作用的是形成在气缸730外壁上的第一凸部731和第二凸部732。当然，上述实施例中提到的螺旋状凸条、导向条等实施结构也可应用于第六实施例中。

Claims (20)

  1. 一种乳液泵，所述乳液泵用于安装在容器上以分配容器中的产品，所述乳液泵包括活动部分和固定部分，在使用中，所述活动部分能够相对于所述容器运动，所述固定部分相对于所述容器保持静止，其特征在于，所述乳液泵还包括：
    弹性复位机构，所述弹性复位机构的一端与所述活动部分相接触或相连接，而所述弹性复位机构的另一端固定于所述固定部分；以及
    切换机构，所述切换机构设置在所述活动部分或所述固定部分上，且所述切换机构被设置成与所述弹性复位机构相配合，以使得当使所述活动部分沿第一方向转动和/或向上运动时，所述弹性复位机构的所述一端相对于所述活动部分运动到第一位置，从而使所述弹性复位机构加载而进入备用状态，而当所述活动部分沿与第一方向相反的第二方向转动和/或向下运动时，所述弹性复位机构的所述一端相对于所述活动部分运动到第二位置，使所述弹性复位机构进入非备用状态。
  2. 如权利要求1所述的乳液泵，其特征在于，所述切换机构设置在所述活动部分上。
  3. 如权利要求2所述的乳液泵，其特征在于，所述切换机构包括第一配合部，在所述弹性复位机构上形成有第二配合部，当所述活动部分相对于所述容器运动时，所述第一配合部与所述第二配合部相协作，使所述弹性复位机构的所述一端在所述第一位置和所述第二位置之间运动。
  4. 如权利要求3所述的乳液泵，其特征在于，所述弹性复位机构包括弹簧和弹簧支承座，所述弹簧支承座位于所述弹簧的所述一端处，所述第二配合部形成在所述弹簧支承座上。
  5. 如权利要求4所述的乳液泵，其特征在于，所述第一配合部和所述第二配合部中的一个为螺旋状凸条，所述第一配合部和所述第二配合部中的另一个为螺旋状凹槽，所述螺旋状凸条能够配合到所述螺旋状凹槽中，从而当所述活动部分旋转时，所述螺旋状凹槽与所述螺旋状凸条之间的相互作用使所述弹性复位机构的所述一端在所述第一位置和所述第二位置之间运动。
  6. 如权利要求1所述的乳液泵，其特征在于，所述活动部分包括压头、活塞杆和活塞，其中所述活塞杆连接在所述压头的下部，且在所述活塞杆上设置有所述活塞，所述固定部分包括牙套和气缸，其中所述气缸与所述牙套相连接，且所述活塞杆中至少设置有所述活塞的部分延伸到所述气缸内部。
  7. 如权利要求6所述的乳液泵，其特征在于，在所述活塞杆的外周面和所述牙套的顶部的一方上形成有锁头块，而在所述活塞杆的外周面和所述牙套的所述顶部的另一方上形成有缺口，通过旋转所述活塞杆，能够使所述锁头块对准所述缺口，从而所述压头和所述活塞杆能够向上运动。
  8. 如权利要求7所述的乳液泵，其特征在于，所述切换机构包括第一配合部，在所述弹性复位机构上形成有第二配合部，所述第一配合部和所述第二配合部中的一个为螺旋状凸条，所述第一配合部和所述第二配合部中的另一个为螺旋状凹槽，随着所述活塞杆的旋转，所述螺旋状凸条能够从所述螺旋状凹槽脱出，并且所述螺旋状凸条和所述螺旋状凹槽的尺寸和相对位置被设置成，随着所述活塞杆的旋转，在所述锁头块与所述缺口对准之前，所述螺旋状凸条从所述螺旋状凹槽脱出。
  9. 如权利要求3所述的乳液泵，其特征在于，所述第一配合部包括导向条，所述第二配合部包括缺口，通过所述活动部分的旋转，使所述导向条与所述缺口对准，进而允许所述弹性复位机构的所述一端在第一位置和所述第二位置之间运动。
  10. 如权利要求9所述的乳液泵，其特征在于，在所述导向条上方还设置有上锁定块和/或在所述导向条下方还设置有下锁定块；以及
    在所述第二配合部的上方和/或下方形成有挡块，所述挡块与所述上锁定块和/或所述下锁定块相配合，使得只能沿预先设定的方向旋转所述活动部分。
  11. 如权利要求2所述的乳液泵，其特征在于，所述切换机构包括第一配合部，在所述弹性复位机构上形成有第二配合部，其中，所述第一配合部是形成在所述活动部分上的倒扣环，通过上拉所述活动部件，所述第二配合部能够越过所述倒扣环而从所述第一位置运动到所述第二位置，并由所述倒扣环保持在所述第二位置。
  12. 如权利要求5、9、或11所述的乳液泵，其特征在于，所述固定部分 包括牙套和气缸，所述活动部分包括压头和活塞杆，其中所述气缸与所述牙套相连接，且所述活塞杆中至少设置有所述活塞的部分延伸到所述气缸内部，其中在所述弹性复位机构的所述一端和所述气缸的外壁中的一方包括导向块，并且在所述弹性复位机构的所述一端和所述气缸的外壁中的另一方上形成有缺槽，所述导向块至少部分地容纳在所述缺槽中。
  13. 如权利要求5、9或11所述的乳液泵，其特征在于，所述活动部分包括压头、活塞杆和活塞，其中所述活塞杆连接在所述压头的下部，且在所述活塞杆上设置有所述活塞，其中所述第一配合部形成在所述活塞杆和/或所述活塞的外周面上。
  14. 如权利要求5、9或11所述的乳液泵，其特征在于，所述活动部分包括压头、活塞杆、活塞和套管，其中所述活塞杆连接在所述压头的下部，且在所述活塞杆上设置有所述活塞，其中，所述套管套设在所述活塞杆和/或所述活塞的外侧，且在所述套管的外表面上形成所述第一配合部。
  15. 如权利要求2所述的乳液泵，其特征在于，所述弹性复位机构包括至少一个弹性条。
  16. 如权利要求15所述的乳液泵，其特征在于，所述弹性复位机构还包括：
    环状的弹簧上座，所述弹性条的上端连接在所述弹簧上座上，和/或
    环状的弹簧下座，所述弹性条的下端连接在所述弹簧下座上。
  17. 如权利要求16所述的乳液泵，其特征在于，所述弹性条通过枢转部连接到所述弹簧上座和/或所述弹簧下座，其中，当所述弹性复位装置受到压缩时，所述枢转部枢转并折叠。
  18. 如权利要求16所述的乳液泵，其特征在于，在所述弹簧上座的内侧和所述固定部分中的一个上形成有第一导槽，在所述弹簧上座的内侧和所述固定部分中的另一个上形成有第一引导条，所述第一导槽和所述第一引导条相配合；和/或
    在所述弹簧下座的内侧和所述固定部分中的一个上形成有第二导槽，在所述弹簧下座的内侧和所述固定部分中的另一个上形成有第二引导条，所述第二导槽和所述第二引导条相配合。
  19. 如权利要求16～18中任一项所述的乳液泵，其特征在于，所述固定部分的下部设置有倒扣部，所述倒扣部固定所述弹簧的所述弹簧下座。
  20. 如权利要求15所述的乳液泵，其特征在于，当沿着所述乳液泵的轴向看时，所述弹性条围绕着所述乳液泵的气缸的外周的至少一部分延伸。
PCT/CN2019/108973 2019-01-03 2019-09-29 乳液泵 Ceased WO2020140513A1 (zh)

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US17/420,167 US11638925B2 (en) 2019-01-03 2019-09-29 Lotion pump
JP2021538988A JP2022516184A (ja) 2019-01-03 2019-09-29 ローションポンプ
BR112021013073-0A BR112021013073B1 (pt) 2019-01-03 2019-09-29 Bomba de loção
KR1020217024221A KR102785861B1 (ko) 2019-01-03 2019-09-29 로션 펌프
EP19906831.3A EP3907151B1 (en) 2019-01-03 2019-09-29 Lotion pump

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EP3907151A4 (en) 2022-09-28
EP3907151A1 (en) 2021-11-10
KR102785861B1 (ko) 2025-03-25
JP2022516184A (ja) 2022-02-24
CN120421139A (zh) 2025-08-05
US11638925B2 (en) 2023-05-02
KR20210134896A (ko) 2021-11-11

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