WO2018145511A1 - 按压泵 - Google Patents

按压泵 Download PDF

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Publication number
WO2018145511A1
WO2018145511A1 PCT/CN2017/115423 CN2017115423W WO2018145511A1 WO 2018145511 A1 WO2018145511 A1 WO 2018145511A1 CN 2017115423 W CN2017115423 W CN 2017115423W WO 2018145511 A1 WO2018145511 A1 WO 2018145511A1
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WO
WIPO (PCT)
Prior art keywords
spring
pressing
pump body
spring tube
pressure
Prior art date
Application number
PCT/CN2017/115423
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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 JP2019563658A priority Critical patent/JP7060620B2/ja
Priority to EP17896132.2A priority patent/EP3581518B1/en
Priority to US16/483,912 priority patent/US10926279B2/en
Publication of WO2018145511A1 publication Critical patent/WO2018145511A1/zh

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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
    • 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
    • B05B11/0005—Components or details
    • B05B11/0008—Sealing or attachment arrangements between sprayer and 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
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
    • B05B11/00442—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means the means being actuated by the difference between the atmospheric pressure and the pressure inside 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
    • B05B11/1015—Piston pumps actuated without substantial movement of the nozzle in the direction of the pressure stroke
    • 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
    • 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

Definitions

  • the present invention relates to a push pump which is especially installed in a container for accommodating a liquid product such as alcohol or mouthwash and for dispensing a product therefrom.
  • metal pressing springs are provided in such push pumps on the market, and the diameter, wire diameter, length and other parameters of the metal spring are set relatively large, so as to provide as much pumping as possible. ability.
  • an external spring is usually provided in such a push pump which is currently used on the market, and the external spring is arranged around the piston rod. Therefore, the diameter of the spring needs to be made relatively large. Accordingly, in order to ensure the spring force of the spring, the wire diameter of the spring needs to be made thicker, and the length of the spring needs to be set longer.
  • the spring is made of stainless steel, and the manufacturing cost increases as the size of the spring increases. Therefore, the cost of the spring in the push pump for pumping products such as alcohol and mouthwash is high.
  • the spring will come into contact with the product contained in the container such as alcohol or mouthwash.
  • these products have an effect on the spring, which may corrode the spring.
  • the spring will also pollute the product.
  • the contact with the stainless steel spring will change the taste of the wine, and for products such as mouthwash, the contact with the spring will also be The effect of mouthwash has a negative impact.
  • the present invention has been made to solve the technical problems of the above-described prior art push pump. It is an object of the present invention to provide a push pump that is capable of using a smaller sized spring to reduce the system Cause this. And further, the push pump can also avoid contact between the spring and the product contained in the container to solve the problem of mutual influence.
  • the pressure pump of the present invention comprises: a pump body, a spring tube is disposed in the pump body, a spring is accommodated in the spring tube; a cylinder head is mounted on the pump body and includes an inner hole; The pressure head includes a pressing portion and a rod portion, the rod portion is fitted in the inner hole of the cylinder head, and the lower portion of the rod portion is engaged with the spring, so that the spring applies an upward biasing force to the pressing head; and the piston, the piston and the pressure The heads are coupled and slidably sealingly engage the inner peripheral surface of the pump body.
  • a spring tube is provided in the pressing pump body to accommodate the spring, and thus the spring is built in.
  • the size including the cross-sectional diameter, the length, and the like can be reduced, and the wire diameter of the spring can be correspondingly reduced, but at the same time satisfying the requirements for alcohol and mouthwash. Large displacement requirements for products. Therefore, it is possible to save materials such as stainless steel for manufacturing springs, and to reduce manufacturing costs.
  • the use of a spring tube to accommodate the spring can, to a certain extent, separate the spring from the product contained in the container, preventing them from contacting each other, thereby avoiding adverse effects between them.
  • a spring tube mounting portion is disposed in the body of the pressing pump, and the spring tube is fixedly mounted in the spring tube mounting portion, wherein one of the outer circumferential surface of the spring tube and the inner circumferential surface of the spring tube mounting portion is disposed In cooperation with the groove, a fitting collar is provided on the other of the outer circumferential surface of the spring tube and the inner circumferential surface of the spring tube mounting portion.
  • the piston includes an inner ring and an outer ring, the inner ring is slidably sealingly fitted with the outer circumferential surface of the spring tube, and the outer ring is slidably sealingly fitted with the inner circumferential surface of the pressing pump body.
  • the spring can be further isolated from the product contained in the container by the sealing action of the inner and outer rings.
  • the stem of the indenter can include an inner sleeve and an outer sleeve, the inner sleeve abutting the spring and the piston being coupled to the outer sleeve.
  • an opening is provided in a lower portion of the pressing pump body, and an outlet conduit is connected to the opening, and the outlet conduit is integrally or detachably connected to the opening.
  • the liquid outlet conduit is disposed on the pressing pump body, so that the liquid outlet conduit can be kept stationary during the pressing of the pressure head, thereby facilitating the user to catch the pumping from the container with a vessel such as a cup. product.
  • At least one step portion is disposed on the inner hole of the cylinder head, and at least one protrusion is disposed on the outer peripheral surface of the pressure head, and the protrusion can be in contact with the step portion to limit the pressing stroke of the pressure head.
  • an air hole may be disposed on the pressing pump body, and an elastic piece is disposed on the inner side of the air hole, and the elastic piece covers the air hole, only when the pressure in the container in which the pressing pump is installed is smaller than the external environment pressure by a predetermined pressure value The elastic piece is bent under the action of external pressure to open the air hole.
  • Fig. 1a shows a cross-sectional view of a push pump of the present invention, wherein the push pump is in a state of being in a standby state.
  • Fig. 1b shows another sectional view of the pressure pump shown in Fig. 1a, wherein the pressure pump is in a lower pressing state.
  • Figure 2 shows a cross-sectional view of the spring tube in the push pump of Figures 1a and 1b.
  • Figure 3 shows a cross-sectional view of the push pump body in the push pump of Figures 1a and 1b.
  • Figure 4a shows a cross-sectional view of the cylinder head in the push pump of Figures 1a and 1b.
  • Figure 4b shows a top view of the cylinder head shown in Figure 4a.
  • Figure 5 shows a cross-sectional view of the indenter in the push pump of Figures 1a and 1b.
  • Figure 6 shows a cross-sectional view of the piston in the push pump of Figures 1a and 1b.
  • Fig. 7 shows a shrapnel provided in the pump body for controlling the opening and closing of the air vent in the pump body.
  • the terms “upper”, “lower” and the like used to indicate the direction or orientation are based on the drawings.
  • the orientation of the pump can be changed as needed.
  • the push pump may be at an angle to the horizontal direction during use, or even horizontally, rather than being placed in the up and down direction as shown in the figure.
  • FIG. 1a and 1b show cross-sectional views of the press pump 1 of the present invention in two different states, wherein the press pump 1 shown in Fig. 1a is in a state of upper standby, and the press pump 1 shown in Fig. 1b is in a lower press. status.
  • the push pump 1 can be used to hold a container (not shown) of a product such as alcohol, mouthwash or the like.
  • Pressing the pump 1 includes pressing the pump body 10, and a spring tube 20 is fixed in the pressing pump body 10.
  • the spring tube 20 and the pressing pump body 10 may be separately manufactured and then assembled together, or may be integrally formed in the pressing pump body 10.
  • the push pump body 10 and the spring tube 20 that are detachably mounted together are preferable in terms of flexibility and convenience in use and manufacture.
  • a spring 21 is housed in the spring tube 20.
  • the push pump 1 further includes a cylinder head 30 that covers the pump body 10.
  • the cylinder head 30 may be integrally formed with the pump body 10, or may be separately formed and assembled.
  • the cylinder head 30 includes an inner bore 31 in which the indenter 40 can be fitted, as will be described in detail below.
  • the indenter 40 can be fitted with a piston 50 that is at least slidably sealingly engaged with the inner surface of the pump body 10.
  • the structure of the push pump 1 shown in the drawing employs a spring tube 20 to accommodate the spring 21.
  • the spring 21 does not have to be disposed around a structure such as the stem portion 42 of the ram 40, so that the cross-sectional area of the spring 21 can be set relatively small, and accordingly, the length and wire diameter of the spring 21 can be correspondingly reduced. And the spring force of the spring 21 can be substantially unaffected.
  • the spring tube 20 serves to some extent to separate the spring 21 from the product contained in the container.
  • FIG. 2 shows a cross-sectional view of the spring tube
  • FIG. 3 shows a cross-sectional view of the pump body 10.
  • the pressing pump body 10 is provided with a spring tube mounting portion 13, on which an inner wall of the spring tube mounting portion 13 is formed with a fitting recess 14, and correspondingly, a lower portion of the spring tube 20 can be disposed.
  • the arrangement positions of the engaging convex ring and the fitting groove can be interchanged, that is, the fitting groove is provided on the spring tube 20, and the spring tube is mounted on the pump body 10 to be mounted.
  • the fitting 13 is provided on the portion 13, and the object of the present invention can also be achieved.
  • the upper end of the spring tube 20 is open for the spring 21 to be placed, and the bottom 23 of the spring tube 20 is closed for supporting the spring 21, and the spring tube 20 and other parts of the pump body 10 can be pressed. Separated.
  • both ends of the spring tube 20 are open, and a partition is formed in the spring tube mounting portion 13, and the spacer functions as the support spring 21 and the isolation spring tube 20.
  • an opening 11 may be provided in the lower portion of the pressing pump body 10, and the liquid outlet conduit 12 may be connected to the opening 11, as shown in Figs. 1a and 1b.
  • the liquid outlet conduit 12 may be detachably coupled to the opening 11, or may be integrally formed on the opening 11.
  • the opening can also be placed at other locations, such as on the ram 40, and a communication channel is provided between the ram 40 and the interior of the pump body 10.
  • FIGS. 4a and 4b show a cross-sectional view and a plan view, respectively, of the cylinder head 30 of the push pump 1, and Fig. 5 shows a cross-sectional view of the ram 40.
  • the cylinder head 30 is provided with an inner hole 31, and the ram 40 shown in Fig. 5 includes a pressing portion 41 and a rod portion 42 connected to the pressing portion 41 and extending downward.
  • the stem portion 42 of the head 40 can extend into the inner bore 31 of the cylinder head 30.
  • the stem portion 42 of the ram 40 includes an outer sleeve 43 and an inner sleeve 44.
  • 1A and 1b in the assembled state, the lower end of the inner sleeve 44 can be fitted to the spring 21 in the spring tube 20, so that the spring 21 passes through the inner sleeve 44.
  • the ram 40 applies an upward biasing force.
  • a piston is connected to the outer sleeve 43. The specific structure and arrangement of the piston will be described in detail below.
  • the stem portion 42 of the indenter 40 can also be Its form, for example, may comprise only one sleeve which cooperates with both the spring 21 and the piston.
  • At least one step portion 32 is formed on the inner wall of the inner bore 31 of the cylinder head 30, and the step portion 32 is preferably located at a lower portion of the cylinder head 30, more preferably near the cylinder.
  • the bottom end of the cover 30 is disposed.
  • at least one bump 45 is formed on the outer peripheral surface of the stem portion 42 of the ram 40.
  • the step portion 32 and the bump 45 can be provided in various ways.
  • shown in Fig. 4b are two step portions 32, correspondingly, two projections 45 are provided at positions on the outer circumferential surface of the stem portion 42 of the indenter 40 substantially aligned with the two step portions 32. .
  • at least one of the step portion 32 and the bump 45 may be formed in the form of a continuous convex ring.
  • the number of the step portion 32 and the bump 45 may be equal or different, as long as at least one step portion 32 and at least one bump 45 are ensured to be in contact with each other during the pressing of the indenter 40, that is, The effect of limiting the pressing stroke can be basically achieved.
  • FIG. 6 shows a cross-sectional view of the piston 50 in the push pump 1.
  • the piston 50 includes an outer ring 51, an inner ring 52, and a connecting portion 53 that connects the outer ring 51 and the inner ring 52.
  • the inner ring 52 is slidably in contact with the outer peripheral surface of the spring tube 20, and a seal is formed between the inner ring 52 and the outer peripheral surface of the spring tube 20;
  • the outer ring 51 is The inner peripheral surface of the pressing pump body 10 is slidably contacted, and a seal is formed between the outer ring 51 and the inner peripheral surface of the pressing pump body 10.
  • the spring tube 20 can be spaced apart from the space in which the product is housed in the pump body 10, thereby further effectively preventing the product from coming into contact with the spring 21 in the spring tube 20, the spring 21 and the product The adverse effects between each other.
  • the shape and structure of the connecting portion 53 may be set according to the structure of the specific pressing pump 1, and may be, for example, a structure with a curved portion as shown in FIG. 6 to match the shape of other components in the pressing pump 1. .
  • the connection portion 53 may be formed in a flat shape if the space in the pump 1 is allowed.
  • an air hole 15 (see Figs. 1a, 1b and 3) may be provided on the pressing pump body 10 for balancing the pressure in the container in which the above-described pressing pump 1 is mounted.
  • a spring piece 60 may be disposed on the pump body 10 for controlling the opening and closing of the air hole 15.
  • the elastic piece 60 includes a fixing portion 61 and an elastic portion 62 connected to the fixing portion 61.
  • the fixing portion 61 is fixedly coupled to the pressing pump body 10, and the elastic portion 62 covers the air hole 15 on the pump body 10.
  • the elastic portion 62 is disposed such that when the difference between the pressure in the container and the pressure of the external environment reaches a predetermined value, the pressure difference of the predetermined value causes the elastic portion 62 to be bent inward, thereby opening the air hole 15 to balance the container Internal pressure. On the other hand, if the difference between the pressure in the container and the pressure in the external environment does not reach a predetermined value, the elastic portion 62 abuts against the air hole 15 to close the air hole 15 to prevent outside air from entering. .
  • the force required to bend the elastic portion 62 can be set by selecting parameters such as the material, size, and the like of the elastic portion 62.

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  • Reciprocating Pumps (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Closures For Containers (AREA)

Abstract

一种按压泵（1），包括：按压泵本体（10），该按压泵本体（10）中设置有弹簧管（20），在弹簧管（20）中容纳有弹簧（21）；汽缸盖（30），该汽缸盖（30）安装在按压泵本体（10）上，并包括内孔（31）；压头（40），该压头（40）包括按压部（41）和杆部（42），杆部（42）配合在汽缸盖（30）的内孔（31）内，且杆部（42）的下部与弹簧（21）相配合，从而使弹簧（21）对压头（40）施加向上的偏置力；以及活塞（50），活塞（50）与压头（40）相连接，并且与按压泵本体（10）的内周面可滑动地密封配合。该按压泵（1）可使用较小尺寸的弹簧（21），同样能够满足大排量要求，从而降低制造成本，而且还能防止产品与弹簧（21）接触，避免它们之间互相的不利影响。

Description

按压泵 技术领域
本发明涉及一种按压泵，该按压泵尤其是安装在容纳酒类、漱口水等液态产品的容器中，并用于从该容器分配其中的产品。
背景技术
在酒类、漱口水等产品领域中，有些会采用带有按压泵的容器来包装此类产品，通过下压按压泵，将容器中的产品分配出来。由于酒类和漱口水的使用特性，用于泵送此类产品的按压泵需要具有较大的排量，以满足消费者的使用需求。
为满足这方面的需求，目前市场上的此类按压泵中都设置有金属弹簧，且该金属弹簧的直径、线径、长度等参数都设置得比较大，从而能够提供尽可能大的泵送能力。此外，目前市场上常用的此类按压泵中通常设置的是外置式弹簧，该外置式弹簧围绕活塞杆布置。因此，弹簧的直径需要做得比较大，相应地，为了保证弹簧的弹力，需要将弹簧的线径也做得更粗，弹簧的长度也需要设置得更长。
通常来说，用于弹簧是由不锈钢制成的，其制作成本随着弹簧尺寸的增加也随之增加。因此，现有技术中用于泵送酒类、漱口水之类产品的按压泵中的弹簧的成本较高。
除此之外，对于外置式弹簧的按压泵来说，其弹簧会与酒类、漱口水等容器内所容纳的产品相接触，一方面这些产品对弹簧会有影响，有可能腐蚀弹簧，另一方面弹簧也会对产品产生污染，例如在容器内盛放的产品是酒类时，与不锈钢弹簧的接触会改变酒类的口味，而对于漱口水之类的产品，与弹簧接触也会对漱口水的作用效果产生负面影响。
因此，需要对按压泵进行改进，以降低成本，并避免按压泵中的弹簧与产品之间互相影响。
发明内容
本发明是为了解决以上所述现有技术的按压泵所存在的技术问题而作出的。本发明的目的是提供一种按压泵，该按压泵能够使用较小尺寸的弹簧，以降低制 造成本。并且进一步地，该按压泵还能够避免弹簧与容器中所容纳的产品之间的接触，以解决两者互相影响的问题。
本发明的按压泵包括：按压泵本体，该按压泵本体中设置有弹簧管，在弹簧管中容纳有弹簧；汽缸盖，该汽缸盖安装在按压泵本体上，并包括内孔；压头，该压头包括按压部和杆部，杆部配合在汽缸盖的内孔内，且杆部的下部与弹簧相配合，从而使弹簧对压头施加向上的偏置力；以及活塞，活塞与压头相连接，并且与按压泵本体的内周面可滑动地密封配合。
在上述结构的按压泵中，在按压泵本体中设置弹簧管来容纳弹簧，因而将弹簧内置。这样，由于弹簧无需围绕诸如活塞杆之类的部件设置，因此包括其截面直径、长度等的尺寸可以缩小，弹簧的线径也可相应地缩小，但同时又能满足对于酒类、漱口水之类产品的大排量要求。因此可以节约制造弹簧的诸如不锈钢等材料，降低制造成本。而且，用弹簧管来容纳弹簧，可在一定程度上将弹簧与容器所容纳的产品互相分开，防止它们之间互相接触，从而避免它们之间互相的不利影响。
较佳地，在按压泵本体内设置有弹簧管安装部，弹簧管固定安装在弹簧管安装部中，其中，在弹簧管的外周面和弹簧管安装部的内周面中的一个上设置有配合凹槽，在弹簧管的外周面和弹簧管安装部的内周面中的另一个上设置有配合凸环。
较佳地，活塞包括内圈和外圈，内圈与弹簧管的外周面可滑动地密封配合，外圈与按压泵本体的内周面可滑动地密封配合。通过内圈和外圈的密封作用，可进一步地将弹簧与容器所容纳的产品隔绝开。
在一种实施方式中，压头的杆部可包括内套筒和外套筒，内套筒与弹簧相抵接，活塞连接在外套筒上。
较佳地，在按压泵本体的下部设置有开口，开口上连接有出液导管，出液导管一体地或可拆卸地连接在开口上。将出液导管设置在按压泵本体上，可使出液导管在压头被下压的过程中保持静止不动，由此便于使用者用诸如杯子之类的器皿接住从容器中泵出的产品。
较佳地，在汽缸盖的内孔上设置有至少一个台阶部，在压头的外周面上设置有至少一个凸块，凸块能够与台阶部相接触，以限制压头的下压行程。
作为压力平衡结构，在按压泵本体上可设置有气孔，在气孔的内侧设置有弹性片，弹性片覆盖气孔，仅当安装有按压泵的容器内的压力比外界环境压力小预定的压力值时，弹性片在外界压力的作用下弯曲，从而打开气孔。
附图说明
图1a示出了本发明的按压泵的截面图，其中该按压泵处于上位待用状态。
图1b示出了图1a所示的按压泵的另一截面图，其中该按压泵处于下位按压状态。
图2示出了图1a和1b所示按压泵中的弹簧管的截面图。
图3示出了图1a和1b所示按压泵中的按压泵本体的截面图。
图4a示出了图1a和1b所示按压泵中的汽缸盖的截面图。
图4b示出了图4a所示汽缸盖的俯视图。
图5示出了图1a和1b所示按压泵中的压头的截面图。
图6示出了图1a和1b所示按压泵中的活塞的截面图。
图7示出了设置在按压泵本体中用于控制按压泵本体中的气孔开闭的弹片。
具体实施方式
为便于理解本发明，以下将参考附图1a～7对本发明的具体实施例进行描述。但是，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，并且在不相矛盾的前提下，在所描述的实施例中的技术特征可以任意组合，而这些都落在本发明的保护范围之内。
在本发明的公开内容中，所使用的“上”、“下”等表示方向或朝向的用语都是以附图所示为基准的。在使用时，可以根据需要改变按压泵的朝向。例如，按压泵在使用过程中有可能与水平方向成一定的角度，甚至有可能是水平放置的，而不是如图中所示的沿上下方向放置。
<总体结构>
图1a和1b示出了本发明的按压泵1的两种不同状态下的截面图，其中，图1a所示的按压泵1处于上位待用状态，图1b所示的按压泵1处于下位按压状态。该按压泵1可用于容纳诸如酒类、漱口水之类的产品的容器(未示出)上。
按压泵1包括按压泵本体10，在按压泵本体10中固定有弹簧管20。弹簧管20和按压泵本体10可以是分别制造，然后再组装在一起，也可以是一体地形成在按压泵本体10中。不过，从使用和制造的灵活性和便利性来说，可拆卸地安装在一起的按压泵本体10和弹簧管20是较佳的。在弹簧管20中容纳有弹簧21。
按压泵1还包括汽缸盖30，该汽缸盖30覆盖在按压泵本体10上。同样地，汽缸盖30也可以是与按压泵本体10一体形成，也可以分别形成，再组装在一起。汽缸盖30包括内孔31，压头40可装配在该内孔31中，具体将在下文中进行描述。
压头40上可装配有活塞50，该活塞50至少与按压泵本体10的内表面可滑动地密封配合。
图中所示的按压泵1的结构采用了弹簧管20来容纳弹簧21。这样，弹簧21不必围绕着诸如压头40的杆部42之类的结构来设置，从而弹簧21的截面积可以设置得比较小，相应地，弹簧21的长度和线径也可相应地减小，而弹簧21的弹力可以基本不受影响。
而且，由于弹簧21是被容纳在弹簧管20中的，该弹簧管20在一定程度上起到了将弹簧21与容器中所盛放的产品分隔开。
下面将参照图2～7来描述按压泵1的各部件的具体结构。
<弹簧管和按压泵本体>
图2示出了弹簧管20的截面图，图3示出了按压泵本体10的截面图。如图3所示，按压泵本体10上设置有弹簧管安装部13，该弹簧管安装部13的内壁上形成有配合凹槽14，而与之相对应的，在弹簧管20的下部可设置有配合凸环22(如图2所示)。当将弹簧管20装配到汽缸盖30中时，配合凸环22卡配到配合凹槽14中，从而通过卡配的方式将弹簧管20装配到按压泵 本体10中。
当然，也可对上述结构进行任何显而易见的改变，例如，配合凸环和配合凹槽的设置位置可以互换，即，在弹簧管20上设置配合凹槽，在按压泵本体10的弹簧管安装部13上设置配合凸环，同样可以实现本发明的目的。
进一步地，如图2所示，弹簧管20上端开口，以供放置弹簧21，而弹簧管20的底部23闭合，用于支承弹簧21，并且可将弹簧管20与按压泵本体10的其它部分分隔开。对此，也可进行一些修改，例如，弹簧管20的两端都是开口的，在弹簧管安装部13中形成隔板，由该隔板起到支承弹簧21和隔离弹簧管20的作用。
此外，可以在按压泵本体10的下部设置有开口11，在该开口11上可连接出液导管12，如图1a和1b所示。出液导管12可以是可拆卸地连接在开口11上，也可一体形成在开口11上。
当然，也可将开口设置在其它位置，例如可设置在压头40上，并且在压头40和按压泵本体10的内部之间设置连通通道。不过，在按压泵本体10的下部设置开口11是较佳的，因为这样的话，在下压压头40以分配容器内的产品时，出液导管12不会随着压头40上下运动，而是保持静止，从而使用人可以方便地用杯子之类的器皿接住由按压泵1从容器中泵送出的产品。
<汽缸盖和压头>
图4a和4b分别示出了按压泵1的汽缸盖30的截面图和俯视图，图5则示出了压头40的截面图。如图4a和4b所示，汽缸盖30中设有内孔31，而在图5中所示的压头40则包括按压部41和与按压部41连接并向下延伸的杆部42，压头40的杆部42可伸入汽缸盖30的内孔31中。
较佳地，如图5所示，压头40的杆部42包括外套筒43和内套筒44。其中，参考图1a和1b所示的按压泵1在组装好的状态下的截面图可知，内套筒44的下端可配合于弹簧管20中的弹簧21，从而弹簧21通过内套筒44对压头40施加向上的偏置力。外套筒43上则连接有活塞。该活塞的具体结构和设置将在下文中详细描述。
当然除了外套筒和内套筒这样的结构之外，压头40的杆部42也可为其 它的形式，例如可以只包括一个套筒，该套筒既与弹簧21相配合，也安装有活塞。
此外，可选地如图4a和4b所示，在汽缸盖30的内孔31内壁上形成有至少一个台阶部32，该台阶部32较佳地位于汽缸盖30的下部，更佳地靠近汽缸盖30的底端设置。相应地，在压头40的杆部42的外周面上形成有至少一个凸块45。当下压压头40泵送产品时，凸块45会随着压头40一起向下运动，并最终与台阶部32接触，此时，台阶部32将阻止压头40进一步向下的运动，从而起到限制压头40的下压行程的作用。
可以以多种方式来设置台阶部32和凸块45。例如，图4b中示出的是两个台阶部32，相对应地，在压头40的杆部42的外周面上与这两个台阶部32大致对准的位置处设置两个凸块45。或者，台阶部32和凸块45中的至少一个可形成为连续的凸环形式。此外，台阶部32和凸块45的数量可以是相等的，也可以是不同的，只要确保至少一个台阶部32与至少一个凸块45在压头40被下压的过程中能够互相接触，即可基本实现限制下压行程的作用。
<活塞>
图6示出了按压泵1中的活塞50的截面图。如图6所示，活塞50包括外圈51、内圈52以及将外圈51和内圈52连接起来的连接部53。
在安装好的状态下，如图1a所示，内圈52与弹簧管20的外周面可滑动地接触，并且在内圈52和弹簧管20的外周面之间形成密封；外圈51则与按压泵本体10的内周面可滑动地接触，并且在外圈51和按压泵本体10的内周面之间形成密封。
通过图6中的活塞50的结构，可以使弹簧管20与按压泵本体10中容纳有产品的空间间隔开，从而进一步有效地防止产品与弹簧管20中的弹簧21相接触，弹簧21和产品之间互相的不利影响。
连接部53的形状和结构可以根据具体的按压泵1的结构来设置，例如可以是如图6中所示的带有弯曲部的结构，以与按压泵1中的其它部件的形状相适配。当然，若按压泵1中的空间允许，该连接部53也可形成为平坦的形状。
<弹片>
较佳地，在按压泵本体10上还可设置气孔15(见图1a、1b和3)，用于平衡安装有上述按压泵1的容器中的压力。进一步地，在按压泵本体10可设置弹片60，用于控制气孔15的开关。
图7中示出了弹片60的侧视图。该弹片60包括固定部61和连接在固定部61上的弹性部62。固定部61固定连接在按压泵本体10中，而弹性部62则覆盖着按压泵本体10上的气孔15。
弹性部62被设置成，当容器中的压力与外界环境的压力之间的差值达到预定的值时，该预定值的压力差使弹性部62向内弯曲，从而使气孔15打开，以平衡容器内部的压力。从另一方面来说，若容器中的压力与外界环境中的压力之间的差值未达到预定的值的话，则弹性部62紧贴在气孔15上，将气孔15关闭，防止外界空气进入。
可以通过选择弹性部62的材料、尺寸等参数来设定使弹性部62弯曲所需的力。

Claims (7)

  1. 一种按压泵，其特征在于，所述按压泵包括：
    按压泵本体，所述按压泵本体中设置有弹簧管，所述弹簧管中容纳有弹簧；
    汽缸盖，所述汽缸盖安装在所述按压泵本体上，并包括内孔；
    压头，所述压头包括按压部和杆部，所述杆部配合在所述汽缸盖的所述内孔内，且所述杆部的下部与所述弹簧相配合，从而使所述弹簧对所述压头施加向上的偏置力；以及
    活塞，所述活塞与所述压头相连接，并且与所述按压泵本体的内周面可滑动地密封配合。
  2. 如权利要求1所述的按压泵，其特征在于，所述按压泵本体内设置有弹簧管安装部，所述弹簧管固定安装在所述弹簧管安装部中，其中，在所述弹簧管的外周面和所述弹簧管安装部的内周面中的一个上设置有配合凹槽，在所述弹簧管的外周面和所述弹簧管安装部的内周面中的另一个上设置有配合凸环。
  3. 如权利要求1所述的按压泵，其特征在于，所述活塞包括内圈和外圈，所述内圈与所述弹簧管的外周面可滑动地密封配合，所述外圈与所述按压泵本体的内周面可滑动地密封配合。
  4. 如权利要求1所述的按压泵，其特征在于，所述压头的所述杆部包括内套筒和外套筒，所述内套筒与所述弹簧相抵接，所述活塞连接在所述外套筒上。
  5. 如权利要求1所述的按压泵，其特征在于，在所述按压泵本体的下部设置有开口，所述开口上连接有出液导管，所述出液导管一体地或可拆卸地连接在所述开口上。
  6. 如权利要求1所述的按压泵，其特征在于，在所述汽缸盖的内孔上设置有至少一个台阶部，在所述压头的外周面上设置有至少一个凸块，所述凸块能够与所述台阶部相接触，以限制所述压头的下压行程。
  7. 如权利要求1所述的按压泵，其特征在于，在所述按压泵本体上设置 有气孔，在所述气孔的内侧设置有弹性片，所述弹性片覆盖所述气孔，仅当安装有所述按压泵的容器内的压力比外界环境压力小预定的压力值时，所述弹性片在外界压力的作用下弯曲，从而打开所述气孔。
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US10926279B2 (en) 2021-02-23
CN108394638B (zh) 2019-04-26
JP2020507529A (ja) 2020-03-12
EP3581518A4 (en) 2020-09-30
US20200016616A1 (en) 2020-01-16
CN108394638A (zh) 2018-08-14

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