WO2022111176A1 - 按压式液体泵 - Google Patents

按压式液体泵 Download PDF

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Publication number
WO2022111176A1
WO2022111176A1 PCT/CN2021/125970 CN2021125970W WO2022111176A1 WO 2022111176 A1 WO2022111176 A1 WO 2022111176A1 CN 2021125970 W CN2021125970 W CN 2021125970W WO 2022111176 A1 WO2022111176 A1 WO 2022111176A1
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WO
WIPO (PCT)
Prior art keywords
elastic
liquid pump
elastic strip
type liquid
mouthpiece
Prior art date
Application number
PCT/CN2021/125970
Other languages
English (en)
French (fr)
Inventor
丁要武
Original Assignee
丁要武
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Publication date
Application filed by 丁要武 filed Critical 丁要武
Publication of WO2022111176A1 publication Critical patent/WO2022111176A1/zh

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042Components or details
    • B05B11/1073Springs
    • B05B11/1077Springs characterised by a particular shape or material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005Components or details
    • B05B11/0037Containers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042Components or details
    • B05B11/1059Means for locking a pump or its actuation means in a fixed position
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001Piston pumps
    • B05B11/1023Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042Components or details
    • B05B11/1066Pump inlet valves
    • B05B11/1067Pump inlet valves actuated by pressure

Definitions

  • the present invention relates to a liquid pump for pumping product from a container, in particular to a push-type liquid pump with an upper lock.
  • liquid pump On packaging containers of daily chemical products such as shampoos, shower gels, or the like, a liquid pump is often installed for pumping the product out of the container for consumer use.
  • the so-called “liquid pump” includes a pump mechanism that can pump any fluid or semi-fluid product, including liquids, emulsions, suspensions, and the like.
  • metal springs have some drawbacks, such as metal springs being susceptible to moisture or rusting from contact with liquid products in the container. Rusty springs can rust and break, preventing the liquid pump from working properly. Also, the rust of the rusted spring can contaminate the product liquid in the container. If the stainless steel spring is used to prevent the spring from rusting, the cost of the liquid pump will increase. When the liquid pump needs to be recycled, the spring needs to be disassembled and separated from other plastic parts of the liquid pump and recycled separately, thereby increasing the cost of recycling. The cost and difficulty of recycling liquid pumps.
  • plastic springs can take various forms, such as bellows type, spiral type, elastic strip type and so on. Compared with metal materials such as stainless steel, the performance of plastics is quite different, especially in terms of elasticity. Therefore, the size of plastic springs is often larger than that of metal springs to obtain elastic force equivalent to metal springs.
  • plastic springs exhibit some limitations. Specifically, first, the plastic spring is easy to yield and deform after being compressed for a long time, causing the elastic force of the spring to be degraded, which in turn causes the liquid pump to not work properly.
  • An object of the present invention is to provide a push-type liquid pump with an improved structure, which can alleviate or delay the problem of failure of the elastic return device due to yield deformation.
  • the pusher fluid pump provided can allow the indenter and brace to be made smaller in diameter, while allowing elastic return means such as a plastic spring to deform without the indenter and brace the limitations of the sleeve.
  • the pressing type liquid pump of the present invention comprises: a pressure head, a piston rod is arranged on the pressure head and can be rotated between a first position and a second position, and when the pressure head is in the first position, the pressing type liquid pump is in a locked state , and when the pressure head is in the second position, the liquid pump is in an open state;
  • the tooth sleeve is provided with a cylinder head part;
  • the cylinder, the cylinder is connected with the tooth sleeve, and one end of the piston rod is connected with the pressure head, and the other end extends into and an elastic reset device
  • the elastic reset device includes at least one elastic strip and a support portion, and is arranged between the indenter and the tooth sleeve to apply an upward biasing force to the indenter, and the lower end of the at least one elastic strip is connected to the support department.
  • a protruding part is provided on the tooth sleeve or the cylinder head part, the supporting part abuts on the protruding part, and a loosening structure is provided at the bottom of the supporting part, in the locked state, the loosening structure abuts against the protruding part, so that at least There is a first linear distance between two ends of one elastic strip, and in the open state, the relaxation structure is staggered from the protrusion, so that there is a second linear distance between the two ends of at least one elastic strip, wherein the first linear distance greater than the second straight-line distance.
  • the elastic reset device can be better accommodated in the process of product transportation, and in addition, the elastic reset device can be avoided or alleviated due to prolonged exposure to the elastic reset device.
  • the support portion is provided to be elastically deformable, and the support portion can be roughly divided into two parts, namely, a connecting portion connected to the lower end of the at least one elastic strip and the rest except the connecting portion. part, and the above-mentioned release structure is formed in the remaining part, in the locked state, the release structure abuts against the protrusion so that the support part is in the initial state, and in the open state, the release structure is staggered from the protrusion and connected The part abuts against the protrusion, so that the support part deforms.
  • the loosening structure is a hinge portion formed in a portion of the support portion other than the connecting portion.
  • the support portion is an elastically deformable sheet
  • the relaxation structure is constituted by the portion of the support portion in the form of a sheet other than the connecting portion.
  • the relaxation structure is a recessed portion formed in a portion of the support portion other than the connecting portion.
  • bumps are formed on the bottom of the support portion of the elastic restoring device, and the loosening structure is formed by the parts of the support portion other than the bumps.
  • a first deformation accommodating portion can also be provided on the indenter.
  • the elastic bar of the elastic reset device is deformed and bent, the elastic The strip enters at least partially into the first deformation receptacle.
  • the push-type liquid pump may include: a pressure head on which a piston rod is provided; a tooth sleeve; a cylinder, the cylinder is connected with the tooth sleeve, and one end of the piston rod is connected with the pressure head, and the other end extends into the cylinder;
  • a reset device the elastic reset device includes at least one elastic strip and is arranged between the indenter and the mouthpiece to apply an upward biasing force to the indenter, wherein a first deformation accommodating portion is provided on the indenter, when the elastic reset is performed When the elastic strip of the device is deformed and bent, the elastic strip at least partially enters the first deformation receiving portion.
  • the elastic reset device in the process of storage and transportation, the elastic reset device can be hidden in the pressure head and/or the mouthpiece, and during the pressing use, the deformation of the elastic reset device can be at least partially caused by the first received by the deformation accommodating portion. Therefore, the diameter of the pressure head can be allowed to be smaller, so that the overall appearance of the liquid pump is beautiful, and further raw materials can be saved.
  • the indenter includes an outer sleeve of the indenter
  • the first deformation accommodating portion includes at least one of the following structures formed on the outer sleeve of the indenter:
  • the first notch portion is aligned with a corresponding one of the elastic strips, and when the elastic strip is deformed, the elastic strip can partially pass through the first notch portion;
  • the first notch portion is aligned with a corresponding one of the elastic strips, and when the elastic strip is deformed, the elastic strip can partially pass through the first notch portion;
  • At least one enlarged portion wherein, in the use state, the enlarged portion is aligned with a corresponding one of the elastic strips, and when the elastic strip is deformed, the elastic strip can be at least partially received in the enlarged portion.
  • the mouthpiece includes a mouthpiece sleeve, and a second deformation accommodating portion is formed on the mouthpiece sleeve, and the second deformation accommodating portion is aligned with the first deformation accommodating portion.
  • the second deformation accommodating portion cooperates with the first deformation accommodating portion to accommodate the deformation of the elastic restoring device.
  • the second deformation accommodating portion includes at least one of the following structures formed on the mouthpiece sleeve:
  • the second notch is aligned with a corresponding one of the elastic strips, and when the elastic strip is deformed, the elastic strip can partially pass through the second notch;
  • At least one second window portion wherein, in the use state, the second window portion is aligned with a corresponding one of the elastic strips, and when the elastic strip is deformed, the elastic strip can partially pass through the second window portion.
  • the push-type liquid pump further includes a synchronous rotation mechanism, and the synchronous rotation mechanism is configured so that the elastic reset device can rotate relative to the mouthpiece together with the pressure head.
  • the indenter includes an inner sleeve of the indenter coaxially arranged on the inner side of the outer sleeve of the indenter, and the synchronous rotation mechanism includes:
  • At least one groove is formed on the elastic restoring device, and the groove is matched with the protruding strip.
  • the indenter includes an inner sleeve of the indenter that is coaxially arranged on the inner side of the outer sleeve of the indenter, and the synchronous rotation mechanism includes:
  • At least one protrusion is formed on the elastic return device, and the slot mates with the protrusion.
  • an alignment indicating structure is provided between the indenter and the mouthpiece to indicate that the first deformation accommodating portion and the second deformation accommodating portion are aligned with each other.
  • Figure 1a is a cross-sectional view of a liquid pump according to a first embodiment of the present invention.
  • Figure 1b is a partially cutaway perspective view of the liquid pump shown in Figure 1a.
  • Figure 2a is a cross-sectional view taken along line A-A in Figure 1a.
  • Figure 2b is a cross-sectional view taken along line B-B in Figure 1b.
  • Figures 3a and 3b are side and front views, respectively, showing the liquid pump of Figures 1a and 1b in a standby position.
  • Figures 4a and 4b are side and front views, respectively, showing the liquid pump of Figures 1a and 1b in a depressed position.
  • Figure 5a shows a front view of the elastic return device of the liquid pump shown in Figures 1a and 1b.
  • Fig. 5b shows a perspective view of the elastic restoring device shown in Fig. 5a, wherein the elastic restoring device 140 is in a relaxed state.
  • Fig. 5c shows a perspective view of the elastic restoring device shown in Fig. 5a, wherein the elastic restoring device 140 is in a compressed state.
  • Figure 6a shows a bottom view of the head of the liquid pump shown in Figures 1a and 1b.
  • Figure 6b shows a perspective view of the indenter shown in Figure 6a.
  • Figure 7a shows a cross-sectional view of the mouthpiece of the liquid pump shown in Figures 1a and 1b.
  • Figure 7b shows a perspective view of the mouthpiece shown in Figure 7a.
  • Figure 8a shows a front view of the head of the liquid pump of the second embodiment of the present invention.
  • Figure 8b shows a perspective view of the indenter shown in Figure 8a.
  • Figure 9a shows a cross-sectional view of the mouthpiece of the liquid pump according to the second embodiment of the present invention.
  • Figure 9b shows a perspective view of the mouthpiece shown in Figure 9a.
  • Figure 10a shows a bottom view of the head of the liquid pump of the third embodiment of the present invention.
  • Figure 10b shows a perspective view of the indenter shown in Figure 10a.
  • Figure 10c shows a perspective view of the indenter shown in Figure 10a from another angle.
  • FIG. 11 shows a cross-sectional view of a liquid pump of a fourth embodiment of the present invention.
  • FIG. 12 shows a cross-sectional view of the head of the liquid pump shown in FIG. 11 .
  • FIG. 13 shows a cross-sectional view of the piston rod of the liquid pump shown in FIG. 11 .
  • Figure 14 shows a front view of another elastic restoring device that can be used in the liquid pump of the present invention, wherein the elastic strips of the elastic restoring device are symmetrically arranged.
  • Figure 15a shows a cross-sectional view of the liquid pump of the fifth embodiment of the present invention, wherein the liquid pump is in a locked state.
  • Figure 15b shows another cross-sectional view of the liquid pump shown in Figure 15a, wherein the liquid pump is in an open state.
  • Fig. 16 is a perspective view showing a state in which the pressure head and the elastic return device in the liquid pump shown in Figs. 15a and 15b are installed together.
  • Figure 17a shows a perspective view of the elastic return means in the liquid pump shown in Figures 15a and 15b.
  • Figure 17b shows a front view of the elastic return device of Figure 17a.
  • Figure 18a shows a cross-sectional view of the mouthpiece in the liquid pump shown in Figures 15a and 15b.
  • Figure 18b shows a perspective cutaway view of the mouthpiece shown in Figure 18a.
  • Figure 19a shows a perspective view of an elastic restoring device with a deformed structure.
  • Fig. 19b is a schematic diagram showing the structural switching of the elastic restoring device shown in Fig. 19a between the open state and the locked state of the liquid pump.
  • Fig. 20 is a schematic diagram showing the structural switching between the open state and the locked state of the liquid pump of the elastic restoring device of another deformed structure.
  • Fig. 21 shows a front view of another elastic restoring device of a deformed structure.
  • FIGS 1-7b illustrate a liquid pump 100 of a first embodiment of the present invention.
  • the liquid pump 100 includes a pressure head 110 , a mouthpiece 120 , an air cylinder 130 and an elastic reset device 140 .
  • a piston rod 150 is provided on the ram 110 .
  • the tooth sleeve 120 and the cylinder 130 are connected together, one end of the piston rod 150 is connected to the lower part of the pressing head 110 , and the other end extends into the cylinder 130 .
  • the elastic reset device 140 is provided between the indenter 110 and the mouthpiece 120, and applies an upward biasing force to the indenter 110, so that when the user removes the pressing force, the indenter 110 can return to its stroke top dead center.
  • Figures 5a-5c show the elastic strip 141 in the liquid pump 100 of the first embodiment shown in Figures 1a and 1b.
  • the elastic restoring device 140 such as a plastic spring, has at least one, preferably a plurality of elastic strips 141 .
  • the elastic restoring device 140 may further include one or both of the upper fixing ring 143 and the lower fixing ring 144 .
  • the upper end of the elastic strip 141 is fixedly connected to the upper fixing ring 143
  • the lower end of the elastic strip 141 is fixedly connected to the lower fixing ring 144 .
  • the upper retaining ring 143 abuts on the indenter 110 and the lower retaining ring 144 abuts on the mouthpiece 120 , whereby the elastic restoring means 140 exerts a bias between the indenter 110 and the mouthpiece 120 Set the force.
  • a groove 142 is provided on the upper fixing ring 143 and/or the lower fixing ring 144, and the groove 142 cooperates with the protruding strips 114 to be described below to form a synchronous rotation mechanism.
  • the arrangement of the upper fixing ring 143 and the lower fixing ring 144 is optional, that is, the upper fixing ring 143 and the lower fixing ring 144 may be omitted.
  • the upper end of the elastic strip 141 can be connected to the indenter 110
  • the lower end of the elastic strip 141 can be connected to the mouthpiece 120 .
  • One of the connection between the upper end of the elastic strip 141 and the indenter 110 and the connection between the elastic strip 141 and the mouthpiece 120 is a fixed connection, and the other is a relatively movable contact.
  • the configuration of such an elastic return device 140 is also within the scope of the present invention.
  • the elastic restoring means 140 includes two elastic strips 141 arranged 180° apart from each other.
  • the two elastic strips 141 are arranged intersecting each other, ie, as can be seen more clearly in Figure 5a, and the two elastic strips 141 are deformed in two mutually parallel planes, as in Figures 5b and 5c shown.
  • the elastic restoring device 140 can also take other forms.
  • the elastic restoring device 140 can include two elastic strips 141 arranged symmetrically with each other, and the two elastic strips 141 can be deformed in the same plane.
  • the reset device 140 is as shown in FIG. 14 .
  • 6a and 6b respectively show a bottom view and a perspective view of the ram 110 of the liquid pump 100 of the first embodiment.
  • the indenter 110 includes an outer indenter sleeve 111 and an inner indenter sleeve 112 , and the above-mentioned piston rod 150 is connected to the indenter inner sleeve 112 (as shown in FIG. 1 a ).
  • the ram outer sleeve 111 and the ram inner sleeve 112 are preferably arranged substantially coaxially.
  • At least one first notch portion 113 is provided on the outer sleeve 111 of the indenter.
  • the number of the first notches 113 can be set according to actual needs.
  • the number of the first notches 113 corresponds to the number of the elastic bars 141 of the elastic restoring device 140 , for example, the number of the first notches 113 It is equal to or greater than the number of elastic strips 141 .
  • the setting position of the first notch portion 113 should also correspond to the position of the elastic strip 141 .
  • the elastic restoring device 140 shown in the figure includes two elastic strips 141 spaced apart by 180° from each other.
  • the outer sleeve 111 of the indenter head 110 is formed with two first gaps spaced apart by 180° from each other. part 113 , and each elastic strip 141 is aligned with the corresponding first notch part 113 .
  • protruding strips 114 are formed on the outer surface of the indenter inner sleeve 112 of the indenter 110 .
  • the grooves 142 on the elastic restoring device 140 are matched with each other. In this way, when the indenter 110 is rotated to switch the indenter 110 between the lock state and the use state, the elastic reset device 140 can rotate together with the indenter 110, so that the elastic strip 141 is always in contact with the corresponding first notch. 113 are aligned with each other.
  • FIG. 7a-7b respectively show a cross-sectional view and a perspective view of the mouthpiece 120 of the liquid pump 100 of the first embodiment.
  • the mouthpiece 120 includes a mouthpiece sleeve 121 , and at least one second notch 122 is formed on the mouthpiece sleeve 121 .
  • the specific number and arrangement position of the second notches 122 correspond to the first notches 113 on the indenter 110 .
  • the indenter outer sleeve 111 of the indenter 110 includes two first notches 113 spaced apart by 180° from each other. There are two second notches 122 spaced 180° apart from each other.
  • the first notch 113 of the pressure head 110 is aligned with the second notch 122 of the mouthpiece 120 , thereby allowing the elastic strip 141 of the elastic restoring device 140 to pass through the first notch when deformed 113 and the second notch portion 122 .
  • an alignment indicating structure (not shown) may be provided between the indenter 110 and the mouthpiece 120, such as a bump-dimple structure, the indenter 110 When rotated to a position where its first notch 113 is aligned with the second notch 122 of the mouthpiece 120, the bumps will engage with the dimples, and a slight "click" will usually sound to indicate the first The notch portion 113 and the second notch portion 122 have been aligned.
  • other common alignment indicating structures may also be adopted to indicate the alignment between the first notch portion 113 and the second notch portion 122 .
  • the operation of the liquid pump 100 of the present invention will be described below with reference to Figures 1a-4b.
  • the biasing force of the elastic restoring device 140 makes the indenter 110 at the position of the top dead center of its stroke, and at this time the elastic restoring device 140 is accommodated in the pressing force of the indenter 110. in the space enclosed by the outer sleeve 111 of the head.
  • the first notch portion 113 and the second notch portion 122 may be staggered from each other.
  • the indenter 110 is rotated so that the first notched part 113 of the indenter 110 is aligned with the second notched part 122 of the mouthpiece 120 , as shown in FIGS. 1 b and 2 b .
  • the pressing head 110 is pressed downward, so that the elastic strip 141 of the elastic restoring device 140 is deformed and bent.
  • the deformed curved elastic strip 141 can pass through the mutually aligned first notch 113 and second notch 122, as can be seen more clearly in Figures 4a and 4b.
  • the arrangement of the first notch portion 113 and the second notch portion 122 allows the elastic strip 141 of the elastic restoring device 140 located on the inner side of the ram outer sleeve 111 of the ram 110 to move outward when the ram 110 is pressed down.
  • the deformation will not be restricted by the pressure head 110 , and after use, the elastic strip 141 can restore its original shape and be hidden in the pressure head outer sleeve 111 , which will not affect the appearance of the liquid pump 100 .
  • Figures 8a-9b show the specific structures of the pressure head 210 and the mouthpiece 220 of the liquid pump according to the second embodiment of the present invention.
  • the technical features of the second embodiment that are different from the first embodiment will be mainly described, unless there is a contrary description in the following content or conflicts with other technical features, in the first embodiment
  • the described features are also applicable to the second embodiment and will not be described in detail here.
  • Figures 8a and 8b show the head 210 of the liquid pump of the second embodiment.
  • the indenter 210 includes an outer indenter sleeve 211 and an inner indenter sleeve 212 , and at least one first window portion 213 is provided on the outer indenter sleeve 211 .
  • two or more first window portions 213 spaced apart from each other are provided on the outer sleeve 211 of the indenter. These first window portions 213 are equally spaced from each other. Of course, the intervals between the first window portions 213 may also be unequal.
  • Figures 9a and 9b show the mouthpiece 220 of the liquid pump of the second embodiment.
  • At least one second window portion 222 is provided on the mouthpiece sleeve 221 of the mouthpiece 220 .
  • the number and arrangement positions of the second window portions 222 correspond to the first window portions 213 on the indenter 210 .
  • the number of the second window parts 222 can be equal to the number of the first window parts 213, and in the use state, each second window part 222 is aligned with its corresponding first window part 213, so as to deform the elastic restoring device
  • the elastic strip can pass through the first window part 213 and the second window part 222 , that is, it will not be restricted by the pressure head outer sleeve 211 of the pressure head 210 .
  • the pressure head 310 of the liquid pump includes a pressure head outer sleeve 311 and a pressure head inner sleeve 312, and at least one, preferably a pressure head outer sleeve 311 is formed on the pressure head outer sleeve 311.
  • Two or more enlarged portions 313 may be spaced equidistantly from each other.
  • two enlarged portions 313 spaced apart from each other by 180° are formed on the outer sleeve 311 of the indenter.
  • the intervals between the enlarged portions 313 may also be different, which is also within the scope of the present invention.
  • the mouthpiece of the liquid pump may be provided with the notch portion (eg, the second notch portion 122 ) and/or the window portion (eg, the second window portion 222 ) disclosed in the first embodiment above.
  • the number and location of the portions and/or window portions may correspond to the enlarged portions 313 on the indenter 310, with the notches and/or window portions aligned with the enlarged portions 313 in the use state.
  • the deformed elastic strip of the elastic restoring device can enter into the enlarged part 313 through the notch part and/or the window part on the mouthpiece.
  • 11 to 13 show a liquid pump 400 of a fourth embodiment of the present invention.
  • the technical features of the fourth embodiment that are different from the first to third embodiments will be mainly described, unless there is a contrary description in the following content or conflicts with other technical features, in the first
  • the features described in the third embodiment are also applicable to the fourth embodiment and will not be described in detail here.
  • the liquid pump 400 of the fourth embodiment includes a pressure head 410 , a mouthpiece 420 and an air cylinder 430 .
  • the ram 410 includes a ram outer sleeve 411 , and a piston rod 450 is mounted on the inner side of the ram outer sleeve 411 .
  • At least one notch portion 413 is formed on the outer sleeve 411 of the indenter, preferably including two or more notch portions 413 , the specific number and location of which correspond to the number and location of the elastic strips of the elastic restoring device 440 .
  • the mouthpiece 420 does not have a mouthpiece sleeve. Therefore, when the liquid pump 400 is in use, the notch portion 413 is aligned with the elastic strip of the elastic restoring device 440 .
  • a protruding strip 451 is formed on the piston rod 450 , which cooperates with the corresponding groove on the elastic reset device 440 and functions as a synchronous rotation mechanism.
  • Figures 15a-21 show a liquid pump 500 of a fifth embodiment of the present invention.
  • the technical features of the fifth embodiment that are different from the first to fourth embodiments will be mainly described, unless there is a contrary description in the following content or conflicts with other technical features, in the first
  • the features described in the fourth embodiment are also applicable to the fifth embodiment, and will not be described in detail here.
  • FIG. 15a shows a cross-sectional view of the liquid pump 500 of the fifth embodiment in a locked state. Similar to the previous embodiment, the liquid pump 500 includes a pressure head 510 , a mouthpiece 520 , an air cylinder 530 and an elastic reset device 540 . A piston rod 550 is connected below the ram 510 .
  • FIG. 15b shows the structure of the liquid pump 500 when it is switched to the open state.
  • the elastic restoring device 540 is sleeved on the piston rod 550 and rotates together with the pressing head 510 through the same or similar structure as the synchronous rotation mechanism described in the above embodiment.
  • the elastic reset device 540 includes at least one, preferably a plurality of elastic strips 541 (two elastic strips 541 are shown in the figure), and one end (the lower end in the figure) of the elastic strips 541 is connected On the support portion 542 , at least one projection 543 is provided at the bottom of the support portion 542 .
  • Figures 18a and 18b show the structure of the tooth sleeve 520, wherein a cylinder head part 521 is connected to the inner side of the tooth sleeve inner sleeve 522 of the tooth sleeve 520, and the cylinder head part 521 covers the cylinder 530 in the installed state, as shown in the figure 15a and 15b.
  • the cylinder head part 521 is integrally formed in the tooth sleeve inner sleeve 522 of the tooth sleeve 520, but those skilled in the art will know that a cylinder head part 521 separated from the tooth sleeve 520 may be provided, and the cylinder head part 521 is attached to mouthpiece 520 in various conventionally known manners.
  • a protrusion 523 is formed on the cylinder head portion 521 of the tooth sleeve 520 , the protrusion 523 preferably protrudes radially, but may also protrude in other ways, such as from the outer periphery of the upper surface of the cylinder head portion 521 The edge projects axially upward, and so on.
  • the protrusion cooperates with the bump 543 on the elastic return device 540 .
  • the linear distance between the two ends of the elastic strip 541 of the elastic reset device 540 is longer than the linear distance between the two ends in the open state shown in FIG. 15b, so that the elastic reset is performed.
  • the device 540 is released in the locked state of the liquid pump 500 .
  • the length difference of the linear distance between the two ends of the elastic strip 541 in the two states is H shown in FIG. 17b.
  • Figures 19a and 19b show an elastic restoring device 540 with a modified structure, which includes an elastic strip 541' and a supporting portion 542', and the supporting portion 542' is an elastically deformable component. Specifically, as shown in Fig. 19a, a hinge portion 543' is formed on the support portion 542'.
  • Figure 19b shows the structural change of the elastic return device 540' as the liquid pump 500 switches between the locked state and the open state. As shown on the left side of FIG.
  • Fig. 20 shows yet another modified structure of the elastic restoring device 540", wherein the switching of the elastic restoring device 540" between the preloaded state and the relaxed state is shown.
  • the support portion 542" is in the form of a sheet that is easily elastically deformed.
  • the support portion 542" is connected to the elastic strip 541" regardless of the In contact with the protrusion 523, the lower end of the elastic strip 541" is biased toward the upper end.
  • the liquid pump 500 is switched to the locked state, as shown on the right side of FIG.
  • the supporting part 542 ′′ returns to its relaxed initial state, wherein the supporting part 542 ′′ in the form of a sheet is bent as shown in the figure, so that the two ends of the elastic strip 541 ′′ are formed between the two ends of the elastic strip 541 ′′. Ann's straight-line distance increases.
  • Fig. 21 shows an elastic restoring device 540"' with another modified structure.
  • the supporting portion 542"' of the elastic restoring device 540"' includes a concave portion 543"', and the concave portion 543"' is formed in the supporting portion 543"'.
  • the portion of the portion 542"' that is connected to the lower end of the elastic strip 541"' is connected to the lower end of the elastic strip 541"'.
  • either the indenter and the mouthpiece are provided with a notch portion, or both are provided with a window portion.
  • the liquid pump can be provided with both notches and windows, as long as it is ensured that the elastic strip of the elastic restoring device can pass through the notches and windows when deformed.
  • a notch may be provided in the indenter, a window may be provided in the mouthpiece, or vice versa; alternatively, the indenter may include both a notch and a window, and the mouthpiece may similarly include both a notch and a window department.
  • the synchronous rotation mechanism includes the groove 142 provided on the elastic reset device 140 and the protruding strip 114 provided on the inner sleeve 112 of the indenter 110 .
  • the positions of the grooves 142 and the protruding strips 114 can be interchanged, that is, a protrusion can be provided on the elastic restoring device 140 and a slot can be provided on the inner sleeve 112 of the ram or the piston rod.
  • the structure of the piston rod 450 in the fourth embodiment can also be applied to the first to third embodiments by modification, for example, the length of the inner sleeve of the indenter in the first to third embodiments can be shortened , so that the piston rod installed on the ram extends into the inside of the ram, specifically, extends to the inside of the outer sleeve of the ram, and further, the protruding strip/slot structure as a synchronous rotation mechanism can be arranged in the piston on the rod.
  • a synchronous rotation mechanism is provided, so that the elastic reset device can rotate together with the indenter, so that the elastic strip of the elastic reset device is always aligned with the notch/window/enlarged part on the indenter.
  • the elastic restoring device it is also possible to set the elastic restoring device not to rotate relative to the mouthpiece, but to rotate the indenter to align the notch/window/enlarged part on the indenter.
  • a protrusion 523 is provided on the cylinder head portion 521 formed integrally or separately with the mouthpiece 520 for cooperating with the bearing portion 542 of the elastic restoring device 540 .
  • the protrusion 523 may be formed on other parts of the mouthpiece 520, such as on the inner wall of the mouthpiece inner sleeve 522 of the mouthpiece 520, and the like.

Landscapes

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

Abstract

一种按压式液体泵包括:压头,压头上设置有活塞杆;牙套;气缸,气缸与牙套相连接,且活塞杆的一端与压头相连接,另一端伸入气缸中;以及弹性复位装置,弹性复位装置包括至少一个弹性条,并设置在压头和牙套之间,以向压头施加向上的偏置力。弹性复位装置上可设置放松结构,使得在按压式液体泵的锁定状态下弹性条两端间的直线距离大于打开状态下的该直线距离。由此,可解决弹性复位装置屈服变形的问题。附加地或替代地,在压头上设置有第一变形容纳部,当弹性复位装置的弹性条变形弯曲时,弹性条至少部分地进入第一变形容纳部。该结构的按压式液体泵允许其压头/牙套的直径较小,使得外形美观,而且还可节省原料。

Description

按压式液体泵 技术领域
本发明涉及一种用于从容器泵送产品的液体泵,特别地涉及一种上位锁头的按压式液体泵。
背景技术
在诸如洗发水、沐浴乳之类的日化产品或类似产品的包装容器上,常常安装有液体泵,用于从容器中将产品泵送出来以供消费者使用。此处,所谓的“液体泵”包括可以泵送任何具有流动性或半流动性产品的泵机构,包括液体、乳液、悬浮液等。
目前市场上的按压式液体泵大多采用金属弹簧,以实现液体泵的复位。但是金属弹簧存在一些缺陷,例如金属弹簧容易受潮或因接触到容器中的液态产品而生锈。生锈的弹簧会锈断,导致液体泵无法正常工作。而且,生锈的弹簧的铁锈会污染容器中的产品料液。而若要防止弹簧生锈而采用不锈钢弹簧,则会导致液体泵的成本上升,而在需要回收该液体泵时,需要将弹簧与液体泵的其他塑料部件拆解分开,分别回收,从而增加了液体泵的回收成本和难度。
针对金属弹簧的上述缺陷,目前市场上出现了一些采用塑料弹簧的乳液泵,这些塑料弹簧可以采取多种形式,例如波纹管式、螺旋式、弹性条式等等。相比于不锈钢之类的金属材料,塑料的性能差异较大,尤其是弹力方面,因此塑料弹簧的尺寸往往要比金属弹簧大,以获得与金属弹簧相当的弹力。
在实际应用中,塑料弹簧表现出一些局限性。具体来说,首先,塑料弹簧在长时间受压之后容易屈服变形,造成弹簧的弹性力退化,进而导致液体泵不能正常的工作。
此外,受到容器瓶颈尺寸的限制,尺寸相对较大的塑料弹簧往往会设置在该液体泵的颈部。并且,即使设置在液体泵的颈部,为了适应塑料弹簧变形所需要的空间,塑料弹簧也只能裸露在液体泵颈部之外。这样的设置结构会影响液体泵的美观,而且在运输过程中,裸露在外的塑料弹簧也容易被损坏。而若用较大的套筒将塑料弹簧罩起来,则外观会显得臃肿,而且这样制造时的用料也比较多, 使得制造成本上升。
因此,在本领域中,存在对结构改进的液体泵的需求,以克服以上所述的至少一个技术问题。
发明内容
本发明是为了解决以上的现有技术中所存在的问题中的至少一个而作出的。本发明的目的是提供一种具有改进结构的按压式液体泵,该按压式液体泵能够减轻或延缓弹性复位装置因屈服变形而失效的问题。替代地或附加地,所提供的按压式液体泵能够允许将压头和牙套制做成较小的直径,同时又能允许诸如塑料弹簧之类的弹性复位装置在变形时不受压头和牙套的套筒的限制。
本发明的按压式液体泵包括:压头,压头上设置有活塞杆,并且能够在第一位置和第二位置之间转动,当压头处于第一位置时,按压式液体泵处于锁定状态,而当压头处于第二位置时,液体泵处于打开状态;牙套,牙套中设置有气缸盖部分;气缸,气缸与牙套相连接,且活塞杆的一端与压头相连接,另一端伸入气缸中;以及弹性复位装置,弹性复位装置包括至少一个弹性条和支承部,并设置在压头和牙套之间,以向压头施加向上的偏置力,至少一个弹性条的下端连接在支承部。其中,在牙套或气缸盖部分上设置有突出部,支承部抵靠在突出部上,并且,在支承部的底部设置有放松结构,在锁定状态中,放松结构抵靠于突出部,使得至少一个弹性条的两端之间呈第一直线距离,而在打开状态中,放松结构与突出部错开,使得至少一个弹性条的两端之间呈第二直线距离,其中第一直线距离大于第二直线距离。
通过如上所述结构的液体泵,特别是其中的弹性复位装置的结构设置,可以在产品运输的过程中更好地容纳弹性复位装置,此外,还能够避免或减轻该弹性复位装置因长时间受压而屈服变形的问题。
较佳地,将支承部设置为可弹性变形的,且该支承部可大致分成两部分,即,与所述至少一个弹性条的所述下端相连接的连接部分以及除了该连接部分以外的其余部分,而上述放松结构形成在该其余部分中,在锁定状态中,放松结构抵靠于突出部而使得所述支承部呈初始状态,而在打开状态中,放松结构与突出部错开,且连接部分抵靠于突出部,使得支承部变形。
具体地,放松结构为形成在支承部的除连接部分以外的部分中的铰链部。
或者,在另一种结构中,支承部为易弹性变形的薄片,且放松结构由该薄片形式的支承部的除连接部分以外的部分构成。
或者,在又一种结构中,放松结构为形成在支承部的除连接部分以外的部分中的凹陷部。
另外较佳地,在弹性复位装置的支承部的底部上形成有凸块,放松结构由支承部的除凸块之外的部分所形成。
另一个方面,作为对以上所述的弹性复位装置中的放松结构的附加或替代的结构,还可以在压头上设置有第一变形容纳部,当弹性复位装置的弹性条变形弯曲时,弹性条至少部分地进入第一变形容纳部。
此处,该变形容纳部的设置可与上述弹性复位装置的具体结构相结合地使用,或者两者也可互相独立地应用在不同的具体实施方式中。即,按压式液体泵可包括:压头,压头上设置有活塞杆;牙套;气缸,气缸与牙套相连接,且活塞杆的一端与压头相连接,另一端伸入气缸中;以及弹性复位装置,弹性复位装置包括至少一个弹性条,并设置在压头和牙套之间,以向压头施加向上的偏置力,其中,在压头上设置有第一变形容纳部,当弹性复位装置的弹性条变形弯曲时,弹性条至少部分地进入第一变形容纳部。
通过上述结构的按压式液体泵,在诸如储运等的过程中,弹性复位装置能够隐藏在压头和/或牙套中,而在按压使用时,弹性复位装置的变形能够至少部分地由第一变形容纳部所接纳。因此,可允许将压头做成较小的直径,这样该液体泵的整体外形美观,进而还可节省原料。
在具体的结构中,压头包括压头外套筒,并且,第一变形容纳部包括形成在压头外套筒上的如下结构中的至少一种:
至少一个第一缺口部,其中,在使用状态下,第一缺口部与弹性条中对应的一个对准,且当弹性条变形时,弹性条能够部分地穿过第一缺口部;
至少一个第一窗口部,其中,在使用状态下,第一缺口部与弹性条中对应的一个对准,且当弹性条变形时,弹性条能够部分地穿过第一缺口部;以及
至少一个扩大部,其中,在使用状态下,扩大部与弹性条中对应的一个对准,且当弹性条变形时,弹性条能够至少部分地容纳在扩大部中。
较佳地,牙套包括牙套套筒,而在牙套套筒上形成有第二变形容纳部,第二变形容纳部与第一变形容纳部相对准。该第二变形容纳部与第一变形容纳部相配合,来接纳弹性复位装置的变形。
在具体的结构中,第二变形容纳部包括形成在牙套套筒上的如下结构中的至少一种:
至少一个第二缺口部,其中,在使用状态下,第二缺口部与弹性条中对应的一个对准,且当弹性条变形时,弹性条能够部分地穿过第二缺口部;以及
至少一个第二窗口部,其中,在使用状态下,第二窗口部与弹性条中对应的一个对准,且当弹性条变形时,弹性条能够部分地穿过第二窗口部。
较佳地,按压式液体泵还包括同步转动机构,同步转动机构构造成,使得弹性复位装置能够随压头一起相对于牙套转动。
具体地,压头包括与压头外套筒同轴地设置在压头外套筒内侧的压头内套筒,该同步转动机构包括:
形成在压头内套筒或活塞杆的外表面上的至少一个凸条;以及
形成在弹性复位装置上的至少一个凹槽,凹槽与凸条相匹配。
或者,在另一种具体结构中,压头包括与压头外套筒同轴地设置在压头外套筒内侧的压头内套筒,同步转动机构包括:
形成在压头内套筒或活塞杆的外表面上的至少一个狭槽;以及
形成在弹性复位装置上的至少一个突部,狭槽与突部相匹配。
较佳地,在压头和牙套之间设置有对准指示结构,以指示第一变形容纳部与第二变形容纳部互相对准。
附图说明
附图中示出了本发明的非限制性的较佳实施结构,结合附图,可使本发明的特征和优点更加明显。其中:
图1a是本发明的第一实施例的液体泵的剖视图。
图1b是图1a所示的液体泵的局部剖切立体图。
图2a是沿图1a中的线A-A得到的剖视图。
图2b是沿图1b中的线B-B得到的剖视图。
图3a和3b分别是示出了处于待用位置的图1a和1b所示液体泵的侧视图和正视图。
图4a和4b分别是示出了处于下压位置的图1a和1b所示液体泵的侧视图和正视图。
图5a示出了图1a和1b所示的液体泵的弹性复位装置的正视图。
图5b示出了图5a所示的弹性复位装置的立体图,其中该弹性复位装置140处于放松状态。
图5c示出了图5a所示的弹性复位装置的立体图,其中该弹性复位装置140处于压缩状态。
图6a示出了图1a和1b所示的液体泵的压头的仰视图。
图6b示出了图6a所示的压头的立体图。
图7a示出了图1a和1b所示的液体泵的牙套的剖视图。
图7b示出了图7a所示的牙套的立体图。
图8a示出了本发明的第二实施例的液体泵的压头的正视图。
图8b示出了图8a所示压头的立体图。
图9a示出了本发明的第二实施例的液体泵的牙套的剖视图。
图9b示出了图9a所示牙套的立体图。
图10a示出了本发明的第三实施例的液体泵的压头的仰视图。
图10b示出了图10a所示压头的立体图。
图10c示出了图10a所示压头的从另一个角度看的立体图。
图11示出了本发明的第四实施例的液体泵的剖视图。
图12示出了图11所示的液体泵的压头的剖视图。
图13示出了图11所示的液体泵的活塞杆的剖视图。
图14示出了可用于本发明的液体泵的另一种弹性复位装置的正视图,其中该弹性复位装置的弹性条对称排布。
图15a示出了本发明的第五实施例的液体泵的剖视图,其中该液体泵处于锁定状态。
图15b示出了图15a所示的液体泵的另一个剖视图,其中该液体泵处于打开状态。
图16示出了图15a和15b所示的液体泵中的压头和弹性复位装置安装在一起的状态的立体图。
图17a示出了图15a和15b所示的液体泵中的弹性复位装置的立体图。
图17b示出了图17a的弹性复位装置的正视图。
图18a示出了图15a和15b所示的液体泵中的牙套的剖视图。
图18b示出了图18a所示的牙套的立体剖切图。
图19a示出了一种变形结构的弹性复位装置的立体图。
图19b示出了图19a所示的弹性复位装置在液体泵的打开状态和锁定状态之间的结构切换的示意图。
图20示出了另一种变形结构的弹性复位装置在液体泵的打开状态和锁定状态之间的结构切换的示意图。
图21示出了又一种变形结构的弹性复位装置的正视图。
具体实施方式
为了便于理解本发明,下面将结合附图对本发明的具体实施方式进行详细描述。应当理解,附图中所示的仅仅是本发明的较佳实施例,其不应理解为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,以下所描述的不同实施例中的技术特征可以互相任意地组合,而这些都落在本发明的范围之内。
在以下的对本发明的具体描述中,所使用的诸如“上”、“下”之类的表示方向和朝向的用语是以图中所示的液体泵的朝向为基准的。应理解,该液体泵的朝向有可能根据具体的应用场合而有所改变。
<第一实施例>
图1-7b示出了本发明的第一实施例的液体泵100。该液体泵100包括压头110、牙套120、气缸130和弹性复位装置140。在压头110上设置有活塞杆150。牙套120和气缸130连接在一起,活塞杆150的一端连接在压头110的下部,另一端伸入到气缸130之内。弹性复位装置140设置在压头110和牙 套120之间,对压头110施加向上的偏置力,使得当使用人撤去按压力时,压头110可回复到其行程上止点。
下面将对液体泵100的各个部件的结构进行具体描述。
<弹性复位装置>
图5a~5c显示了图1a和1b所示的第一实施例的液体泵100中的弹性条141。
如图所示,例如为塑料弹簧的弹性复位装置140具有至少一个、较佳地多个弹性条141。在图示的弹性复位装置140的较佳结构中,弹性复位装置140还可包括上固定圈143和下固定圈144中的一个或两个。弹性条141的上端固定连接在上固定圈143上,弹性条141的下端固定连接在下固定圈144上。如可从图1a中看出的,上固定圈143抵接在压头110上,下固定圈144抵接在牙套120上,由此弹性复位装置140在压头110和牙套120之间施加偏置力。
在进一步较佳的结构中,在上固定圈143和/或下固定圈144上设置有凹槽142,该凹槽142与将在下文中描述的凸条114相配合,构成同步转动机构。
当然,上固定圈143和下固定圈144的设置是可选的,即,可以省略上固定圈143和下固定圈144。此时,可将弹性条141的上端连接在压头110上,将弹性条141的下端连接在牙套120上。弹性条141的上端与压头110的连接以及弹性条141与牙套120的连接中的一方是固定连接,而另一方是可相对运动的接触。这样的弹性复位装置140的结构也在本发明的范围之内。
在图中所示的结构中,弹性复位装置140包括两个互相间隔开180°地设置的弹性条141。这两个弹性条141互相交叉地排布,即,如可从图5a中更清楚地看到的,并且该两个弹性条141在两个互相平行的平面中变形,如图5b和5c中所示的。
除此之外,弹性复位装置140还可采取其它形式,例如弹性复位装置140可包括两个互相对称地布置的弹性条141,且这两个弹性条141能够在同一个平面内变形,该弹性复位装置140如图14中所显示的。
<压头>
图6a和6b分别示出了第一实施例的液体泵100的压头110的仰视图和立体图。
压头110包括压头外套筒111和压头内套筒112,上述的活塞杆150连接在该压头内套筒112上(如图1a所示)。压头外套筒111和压头内套筒112较佳地是大致同轴地设置的。在压头外套筒111上设置有至少一个第一缺口部113。当然,第一缺口部113的数量可以根据实际需要来设置,特别地,该第一缺口部113的数量与弹性复位装置140的弹性条141的数量相对应,例如,第一缺口部113的数量等于或大于弹性条141的数量。
另外,第一缺口部113的设置位置也应与弹性条141的位置相对应。例如,图中所示的弹性复位装置140包括两个相互间隔开180°的弹性条141,相应地,压头110的压头外套筒111上形成两个互相间隔开180°的第一缺口部113,并且每个弹性条141与相应的第一缺口部113对准。
为了确保弹性条141与相应的第一缺口部113对准,较佳地,在压头110的压头内套筒112的外表面上形成有凸条114,该凸条114与以上所述的弹性复位装置140上的凹槽142相配合。这样,当转动压头110以使压头110在锁头状态和使用状态之间切换时,弹性复位装置140能够随着压头110一同旋转,从而使得弹性条141始终与对应的第一缺口部113互相对准。
<牙套>
图7a~7b分别示出了第一实施例的液体泵100的牙套120的剖视图和立体图。
该牙套120包括牙套套筒121,在牙套套筒121上形成有至少一个第二缺口部122。该第二缺口部122的具体数量和设置位置与压头110上的第一缺口部113相对应。
例如,在图中所示的结构中,压头110的压头外套筒111上包括两个互相间隔开180°的第一缺口部113,相应地,在牙套120的牙套套筒121上形成有两个互相间隔开180°的第二缺口部122。在液体泵100的使用状态下,压头110的第一缺口部113与牙套120的第二缺口部122对准,从而允许弹性复位装置140的弹性条141在变形时能够穿过第一缺口部113和第二缺口部122。
为了提示使用人第一缺口部113和第二缺口部122对准,可以在压头110和牙套120之间设置对准指示结构(未示出),例如凸点-凹坑结构,压头110 旋转到使得其第一缺口部113与牙套120的第二缺口部122相对准的位置处时,凸点将与凹坑相配合,并且通常会发出轻微的“咔嗒”声,以指示第一缺口部113和第二缺口部122已经对准。除此之外,还可采取其它的常用的对准指示结构,来指示第一缺口部113和第二缺口部122之间的对准。
<操作>
下面将结合图1a~4b描述本发明的液体泵100的操作。如图1a和2a所示,在初始状态中,弹性复位装置140的偏置力使压头110处于其行程上止点的位置处,此时弹性复位装置140被容纳在由压头110的压头外套筒111所围成的空间中。并且,如图3a和3b中更清楚地示出的,第一缺口部113和第二缺口部122可以互相错开。
接着,转动压头110,使得压头110的第一缺口部113与牙套120的第二缺口部122对准,如图1b和2b所示。接着,向下按压压头110,使得弹性复位装置140的弹性条141变形弯曲。变形弯曲的弹性条141能够穿过互相对准的第一缺口部113和第二缺口部122,如可从图4a和4b中更清楚地看出的。
因此,第一缺口部113和第二缺口部122的设置允许在压头110被向下按压时,位于该压头110的压头外套筒111内侧的弹性复位装置140的弹性条141向外变形而不会受到压头110的限制,而在使用完毕之后,弹性条141又能够恢复其原来的形状而隐藏到压头外套筒111内,不会影响液体泵100的外观。
<第二实施例>
图8a~9b示出了本发明的第二实施例的液体泵的压头210和牙套220的具体结构。在以下对第二实施例的描述中,将主要描述第二实施例与第一实施例不同的技术特征,除非在以下内容中有相反的描述或者与其他技术特征冲突,在第一实施例中描述的特征也都适用于第二实施例,在此不再作详细描述。
图8a和8b示出了第二实施例的液体泵的压头210。该压头210包括压头外套筒211和压头内套筒212,在压头外套筒211上设置有至少一个第一窗口部213。较佳地,在压头外套筒211上设置有互相间隔开地设置的两个或更多个第一窗口部213。这些第一窗口部213互相等距地间隔开。当然,各第一窗 口部213之间的间隔也可以是不相等的。
图9a和9b示出了第二实施例的液体泵的牙套220。在该牙套220的牙套套筒221上设置有至少一个第二窗口部222。第二窗口部222的数量和设置位置与压头210上的第一窗口部213相对应。例如,第二窗口部222的数量可以与第一窗口部213的数量相等,且在使用状态下,每一个第二窗口部222与其对应的第一窗口部213对准,从而变形的弹性复位装置的弹性条能够穿过第一窗口部213和第二窗口部222,即不会受到压头210的压头外套筒211的限制。
<第三实施例>
图10a~10c示出了本发明的第三实施例的液体泵的压头310的具体结构。在以下对第三实施例的描述中,将主要描述第三实施例与第一和第二实施例不同的技术特征,除非在以下内容中有相反的描述或者与其他技术特征冲突,在第一和第二实施例中描述的特征也都适用于第三实施例,在此不再作详细描述。
如图所示,在第三实施例中,液体泵的压头310包括压头外套筒311和压头内套筒312,在压头外套筒311上形成有至少一个、较佳地为两个或更多个扩大部313。这些扩大部313可以互相之间等距地间隔开,例如图中所示,在压头外套筒311上形成有互相间隔开180°的两个扩大部313。当然,各扩大部313之间的间隔也可以是不同的,这也在本发明的范围之内。
与扩大部313对应地,在液体泵的牙套上可以设置以上在第一实施例中公开的缺口部(例如第二缺口部122)和/或窗口部(例如第二窗口部222),这些缺口部和/或窗口部的数量和位置可与压头310上的扩大部313相对应,且在使用状态中,缺口部和/或窗口部与扩大部313对准。
这样,在使用状态下,当向下按压压头310时,弹性复位装置的变形的弹性条可穿过牙套上的缺口部和/或窗口部进入到扩大部313中。
<第四实施例>
图11~13示出了本发明的第四实施例的液体泵400。在以下对第四实施例的描述中,将主要描述第四实施例与第一至第三实施例不同的技术特征,除非在以下内容中有相反的描述或者与其他技术特征冲突,在第一至第三实施例 中描述的特征也都适用于第四实施例,在此不再作详细描述。
第四实施例的液体泵400包括压头410、牙套420和气缸430。压头410包括压头外套筒411,而在压头外套筒411的内侧安装有活塞杆450。在压头外套筒411上形成有至少一个缺口部413,较佳地包括两个或更多个缺口部413,其具体数量和位置对应于弹性复位装置440的弹性条的数量和位置。
另外,在图中所示的第四实施例的液体泵400的结构中,牙套420没有牙套套筒。由此,在液体泵400的使用状态下,缺口部413与弹性复位装置440的弹性条对准,当下压压头410时,弹性复位装置440的弹性条变形而穿过缺口部413。
另外,如图13所示的,在活塞杆450上形成有凸条451,其与弹性复位装置440上的对应凹槽相配合,起到同步转动机构的作用。
<第五实施例>
图15a~21示出了本发明的第五实施例的液体泵500。在以下对第五实施例的描述中,将主要描述第五实施例与第一至第四实施例不同的技术特征,除非在以下内容中有相反的描述或者与其他技术特征冲突,在第一至第四实施例中描述的特征也都适用于第五实施例,在此不再作详细描述。
图15a示出了处于锁定状态的第五实施例的液体泵500的剖视图。与之前的实施例类似,液体泵500包括压头510、牙套520、气缸530和弹性复位装置540。在压头510的下方连接有活塞杆550。图15b则示出了该液体泵500切换到打开状态时的结构。
如图16所示,弹性复位装置540套设在活塞杆550上,并通过与以上实施例中所描述的同步转动机构相同或相似的结构而随着压头510一起转动。
附图17a和17b所示,该弹性复位装置540包括至少一个,较佳地多个弹性条541(图中显示的是两个弹性条541),弹性条541的一端(图中的下端)连接在支承部542上,在支承部542的底部设置有至少一个凸块543。
图18a和18b示出了牙套520的结构,其中,在牙套520的牙套内套筒522内侧连接有气缸盖部分521,该气缸盖部分521在安装好的状态下将气缸530盖住,如图15a和15b所示。在图中所示的结构中,气缸盖部分521一体 形成在牙套520的牙套内套筒522中,不过本领域技术人员可知,可以设置与牙套520互相分离的气缸盖部分521,并且气缸盖部分521以各种常规的已知方式连接到牙套520上。
在牙套520的气缸盖部分521上形成有突出部523,该突出部523较佳地是从径向地突出的,但也可以是以其它方式突出,例如从气缸盖部分521的上表面的外周边缘沿轴向向上地突出,等等。该突出部与弹性复位装置540上的凸块543相协作。当液体泵500处于图15a所示的锁定状态时,凸块543与突出部523互相错开,而当液体泵500切换到图15b所示的打开状态(或称待用状态)时,凸块543与突出部523相对准,使得凸块543与突出部523互相抵接,进而使得弹性复位装置540的弹性条541的两端之间的直线距离减小。换言之,在图15a所示的锁定状态中,弹性复位装置540的弹性条541的两端之间的直线距离要比图15b所示的打开状态时的两端间直线距离要长,从而弹性复位装置540在液体泵500的锁定状态中被放松。弹性条541的两端间直线距离在两种状态下的长度差为图17b中所示的H。
图19a和19b示出了一种变型结构的弹性复位装置540,其包括弹性条541’和支承部542’,而支承部542’为可弹性变形的部件。具体地,如图19a所示,支承部542’上形成有铰链部543’。图19b则示出了随着液体泵500在锁定状态和打开状态之间切换而引起的弹性复位装置540’的结构改变。如图19b的左侧所示,当液体泵500处于打开状态时,支承部542’的与弹性条541’相连接的部分与牙套520(或者气缸盖部分521)中的突出部523相接触,引起支承部542’弹性变形,从而将弹性条541’的下端朝向上端偏置,使得弹性复位装置540’预加载。而当液体泵500切换到锁定状态时,如图19b的右侧所示,支承部542’的铰链部543’与突出部523相接触,进而支承部542’在弹性条541’的弹力作用下恢复到其未受偏置的初始状态,例如图中所示的在铰链部543’的位置处弯曲的状态,使得弹性条541’的两端之间的直线距离增加。这样,弹性复位装置540’放松。
图20示出了又一种变型结构的弹性复位装置540”,其中显示出该弹性复位装置540”在预加载状态和放松状态之间的切换。在该结构中,支承部542”为易弹性变形的薄片形式。如图20的左侧所示,当液体泵500处于打开状态 时,支承部542”的与弹性条541”相连接的不问与突出部523相接触,从而弹性条541”的下端朝向上端偏置。而当液体泵500切换到锁定状态时,如图20的右侧所示,支承部542”的未与弹性条541”相连接的部分与突出部523相接触。这样,在弹性条541”的弹力作用下,支承部542”恢复到其放松的初始状态,其中该薄片形式的支承部542”如图所示地弯曲,从而使得弹性条541”两端之间安的直线距离增加。
图21示出了又一种变型结构的弹性复位装置540”’。其中,该弹性复位装置540”’的支承部542”’中包括凹陷部543”’,该凹陷部543”’形成在支承部542”’的与弹性条541”’的下端相连接的部分之间的位置处。在液体泵500的锁定状态中,凹陷部543”’与突出部523相接触时,弹性条541”’两端之间的直线距离较大,而在液体泵500的使用状态中,凹陷部543”’与突出部523错开,使得突出部523对弹性条541”’的下端施加向上的偏置力,从而弹性条541”’两端之间的直线距离减小,弹性复位装置540”’被预加载。
<其它变型结构>
以上对本发明的具体实施例进行了描述。本领域技术人员可以在这些具体实施例的基础上作出一些显而易见的修改,这些修改也都在本发明的范围之内。
例如,在以上公开的实施例中,压头和牙套中或者都设置缺口部,或者都设置窗口部。本领域技术人员可知,在液体泵上,可以既设置缺口部又设置窗口部,只要确保弹性复位装置的弹性条在变形时能够穿过这些缺口部和窗口部即可。举例来说,可以在压头上设置缺口部,在牙套中设置窗口部,或者相反;或者,压头可以既包括缺口部又包括窗口部,且牙套同样地也可既包括缺口部又包括窗口部。
在上述实施例中,同步转动机构包括设置在弹性复位装置140上的凹槽142和设置在压头110的压头内套筒112上的凸条114。在此,凹槽142和凸条114的设置位置可以互换,即,可在弹性复位装置140上设置突部,而在压头内套筒112或活塞杆上设置狭槽。
另外,第四实施例中的活塞杆450的结构也可通过修改而应用到第一至 第三实施例中,例如可缩短第一~第三实施例中压头的压头内套筒的长度,使得安装在压头上的活塞杆伸入到压头内部,具体来说延伸到压头的压头外套筒内部,进而,作为同步转动机构的凸条/狭槽结构可设置在该活塞杆上。
在上述实施例中,设置有同步转动机构,使得弹性复位装置能够随着压头一起转动,从而弹性复位装置的弹性条始终与压头上的缺口部/窗口部/扩大部对准。不过,也可以将弹性复位装置设置成相对于牙套不转动,而通过旋转压头而使得压头上的缺口部/窗口部/扩大部对准。
在以上所述的第五实施例中,在与牙套520一体地或分别地形成的气缸盖部分521上设置突出部523,用于与弹性复位装置540的支承部542相配合。除了形成在气缸盖部分521上之外,该突出部523还可形成在牙套520的其它部分上,例如形成在牙套520的牙套内套筒522的内壁上,等等。

Claims (12)

  1. 一种按压式液体泵,所述按压式液体泵包括:
    压头,所述压头上设置有活塞杆,并且能够在第一位置和第二位置之间转动,当所述压头处于所述第一位置时,所述按压式液体泵处于锁定状态,而当所述压头处于所述第二位置时,所述液体泵处于打开状态;
    牙套,所述牙套中设置有气缸盖部分;
    气缸,所述气缸与所述牙套相连接,且所述活塞杆的一端与压头相连接,另一端伸入所述气缸中;以及
    弹性复位装置,所述弹性复位装置包括至少一个弹性条和支承部,并设置在所述压头和所述牙套之间,以向所述压头施加向上的偏置力,所述至少一个弹性条的下端连接在所述支承部,
    其特征在于,在所述牙套或所述气缸盖部分上设置有突出部,所述支承部抵靠在所述突出部上,并且,在所述支承部的底部设置有放松结构,在所述锁定状态中,所述放松结构抵靠于所述突出部,使得所述至少一个弹性条的两端之间呈第一直线距离,而在所述打开状态中,所述放松结构与所述突出部错开,使得所述至少一个弹性条的两端之间呈第二直线距离,其中所述第一直线距离大于所述第二直线距离。
  2. 如权利要求1所述的按压式液体泵,其特征在于,所述支承部为可弹性变形的,且包括与所述至少一个弹性条的所述下端相连接的连接部分,所述放松结构形成在所述支承部的除所述连接部分以外的部分中,在所述锁定状态中,所述放松结构抵靠于所述突出部,使得所述支承部呈初始状态,而在所述打开状态中,所述放松结构与所述突出部错开,且所述连接部分抵靠于所述突出部,使得所述支承部变形。
  3. 如权利要求2所述的按压式液体泵,其特征在于,所述放松结构为形成在所述支承部的除所述连接部分以外的部分中的铰链部。
  4. 如权利要求2所述的按压式液体泵,其特征在于,所述支承部为易弹性变形的薄片,且所述放松结构由所述支承部的除所述连接部分以外的部分构成。
  5. 如权利要求2所述的按压式液体泵,其特征在于,所述放松结构为形成在所述支承部的除所述连接部分以外的部分中的凹陷部。
  6. 如权利要求1所述的按压式液体泵,其特征在于,在所述弹性复位装置的所述支承部的所述底部上形成有凸块,所述放松结构由所述支承部的除所述凸块之外的部分所形成。
  7. 如权利要求1所述的液体泵,其特征在于,在所述压头上设置有第一变形容纳部,当所述弹性复位装置的所述弹性条变形弯曲时,所述弹性条至少部分地进入所述第一变形容纳部。
  8. 如权利要求7所述的按压式液体泵,其特征在于,所述压头包括压头外套筒,
    并且,所述第一变形容纳部包括形成在所述压头外套筒上的如下结构中的至少一种:
    至少一个第一缺口部,其中,在使用状态下,所述第一缺口部与所述弹性条中对应的一个对准,且当所述弹性条变形时,所述弹性条能够部分地穿过所述第一缺口部;
    至少一个第一窗口部,其中,在使用状态下,所述第一缺口部与所述弹性条中对应的一个对准,且当所述弹性条变形时,所述弹性条能够部分地穿过所述第一缺口部;以及
    至少一个扩大部,其中,在使用状态下,所述扩大部与所述弹性条中对应的一个对准,且当所述弹性条变形时,所述弹性条能够至少部分地容纳在所述扩大部中。
  9. 如权利要求7所述的按压式液体泵,其特征在于,所述牙套包括牙套套筒,在所述牙套套筒上形成有第二变形容纳部,所述第二变形容纳部与所述第一变形容纳部相对准。
  10. 如权利要求9所述的按压式液体泵,其特征在于,所述第二变形容纳部包括形成在所述牙套套筒上的如下结构中的至少一种:
    至少一个第二缺口部,其中,在使用状态下,所述第二缺口部与所述弹性条中对应的一个对准,且当所述弹性条变形时,所述弹性条能够部分地穿过所述第二缺口部;以及
    至少一个第二窗口部,其中,在使用状态下,所述第二窗口部与所述弹性条中对应的一个对准,且当所述弹性条变形时,所述弹性条能够部分地穿过所述第二窗口部。
  11. 如权利要求1~7中任一项所述的按压式液体泵,其特征在于,所述按压式液体泵还包括同步转动机构,所述同步转动机构构造成,使得所述弹性复位装置能够随所述压头一起相对于所述牙套转动。
  12. 如权利要求11所述的按压式液体泵,其特征在于,所述压头包括与所述压头外套筒同轴地设置在所述压头外套筒内侧的压头内套筒,所述同步转动机构包括:
    形成在所述压头内套筒或所述活塞杆的外表面上的至少一个凸条;以及
    形成在所述弹性复位装置上的至少一个凹槽,所述凹槽与所述凸条相匹配。
PCT/CN2021/125970 2020-11-26 2021-10-25 按压式液体泵 WO2022111176A1 (zh)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013086877A (ja) * 2011-10-17 2013-05-13 Jung Soo Kim ポンプ式ディスペンサー
CN105307948A (zh) * 2013-05-12 2016-02-03 佳尼雍株式会社 按压式分配器
CN107264970A (zh) * 2017-08-04 2017-10-20 中山市联昌喷雾泵有限公司 一种外置式弹性体塑胶弹簧按压泵
CN211811088U (zh) * 2019-11-12 2020-10-30 丁要武 囊式输送泵
CN213769721U (zh) * 2020-11-26 2021-07-23 丁要武 按压式液体泵

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204587605U (zh) * 2015-05-11 2015-08-26 邵晖 一种快速开启与闭合的容器塞

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013086877A (ja) * 2011-10-17 2013-05-13 Jung Soo Kim ポンプ式ディスペンサー
CN105307948A (zh) * 2013-05-12 2016-02-03 佳尼雍株式会社 按压式分配器
CN107264970A (zh) * 2017-08-04 2017-10-20 中山市联昌喷雾泵有限公司 一种外置式弹性体塑胶弹簧按压泵
CN211811088U (zh) * 2019-11-12 2020-10-30 丁要武 囊式输送泵
CN213769721U (zh) * 2020-11-26 2021-07-23 丁要武 按压式液体泵

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