CN111480963A - Pump head structure for cosmetic container and working method thereof - Google Patents
Pump head structure for cosmetic container and working method thereof Download PDFInfo
- Publication number
- CN111480963A CN111480963A CN202010502467.1A CN202010502467A CN111480963A CN 111480963 A CN111480963 A CN 111480963A CN 202010502467 A CN202010502467 A CN 202010502467A CN 111480963 A CN111480963 A CN 111480963A
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- China
- Prior art keywords
- pump
- rod
- elastic body
- head
- cosmetic container
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Classifications
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- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D34/00—Containers or accessories specially adapted for handling liquid toiletry or cosmetic substances, e.g. perfumes
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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
- B05B11/1028—Pumps having a pumping chamber with a deformable wall
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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
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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
- B05B11/1066—Pump inlet valves
- B05B11/1067—Pump inlet valves actuated by pressure
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- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D2200/00—Details not otherwise provided for in A45D
- A45D2200/05—Details of containers
- A45D2200/054—Means for supplying liquid to the outlet of the container
- A45D2200/056—Reciprocating pumps, i.e. with variable volume chamber wherein pressure and vacuum are alternately generated
Landscapes
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Closures For Containers (AREA)
Abstract
The invention provides a pump head structure for a cosmetic container, which comprises a press head, a pump assembly and a bottle cap, wherein the pump assembly comprises an elastic body, an anti-backflow rod and a pump shell, the elastic body is formed into an accommodating cavity with openings at two ends, the anti-backflow rod axially penetrates through the inside of the accommodating cavity and is in sealed connection with the openings at two ends of the accommodating cavity, one end of the elastic body is connected with the press head, and the other end of the elastic body is embedded into the pump shell. According to the invention, the pump assembly is simplified into three main components, namely the elastic body, the anti-reflux rod and the pump shell, the elastic body plays a role of a spring, and can be matched with the anti-reflux rod and the press head to generate negative pressure to play a role of extracting cosmetic liquid from a cosmetic container, and meanwhile, the accommodating cavity formed by the elastic body can also be used for temporarily storing and circulating the cosmetic liquid. The pump head structure of the invention adopts PP material, thus reducing the workload of the recovery link after the pump structure is used, and being suitable for large-scale popularization and application.
Description
Technical Field
The invention relates to the field of cosmetic containers, in particular to a pump head structure for a cosmetic container and a working method of the pump head structure.
Background
In the prior art, in order to prevent the cosmetic liquid or solution from being polluted by frequently opening a cosmetic container cover and to facilitate use, a pressing type pump head is provided in most cosmetic containers, and when the pressing type pump head is pressed, the emulsion or solution in the cosmetic container flows out from a nozzle. The existing pressing pump head on the market has the defects of complex structure, more parts and the like, for example, the prior patent with the publication number of CN110192705A discloses a cosmetic container, wherein the parts related to the pressing pump head comprise a pump body, a pressing head, a piston seat, a bottle piston, a connecting seat, an inner plug, a spring, a first sealing ring, a first sealing gasket, a second sealing gasket and the like, the assembling process is complex, and the production efficiency is low. In addition, the spring of the commonly used pressing pump head in the market is mostly metal material, and the structure is single thin usually, because the spring is used for supporting according to the head and resets, has the problem that the hysteresis of resetting easily after the spring that the structure is single thin is used for a long time, and it is not steady enough to appear the holding power easily, influences the stability that presses the head and remove. Meanwhile, when the metal spring is used and recycled, the metal spring and other plastic parts need to be detached and sorted, and the complexity of recycling work is increased. Therefore, simplifying the structure of the pump head and using plastic elastomer instead of metal spring are the technical problems to be solved in the art.
Disclosure of Invention
The technical problem solved by the invention is as follows: how to simplify the pump head structure and replace the use of metal springs.
In order to solve the technical problems, the technical scheme of the invention provides a pump head structure for a cosmetic container, which comprises a press head, a pump assembly and a bottle cap, and is characterized in that the pump assembly comprises an elastic body, an anti-backflow rod and a pump shell, the elastic body is formed into an accommodating cavity with openings at two ends, the anti-backflow rod axially penetrates through the accommodating cavity and is in sealed connection with the openings at two ends of the accommodating cavity, one end of the elastic body is connected with the press head, and the other end of the elastic body is embedded into the pump shell.
Preferably, the pressing head is formed with a pressing head connecting portion, a nozzle, and a first flow passage communicating the nozzle with the accommodating chamber, the elastic body is provided with a first connecting part connected with the press head connecting part, a liquid outlet hole communicated with the first flow channel and the accommodating cavity, and a second connecting part embedded in the pump shell, the anti-reflux rod comprises a top rod part positioned in the first flow channel, a sealing part used for sealing the liquid outlet hole, a rod body positioned in the accommodating cavity and a tailstock part hermetically connected with the second connecting part, the pump housing comprises a first cavity used for containing the elastic body and the tail seat part, a second cavity used for containing cosmetic liquid flowing from the liquid inlet hole, a liquid inlet hole formed in the bottom of the second cavity, and a second flow channel communicated with the second cavity through the liquid inlet hole.
Preferably, the first connection portion of the elastic body is formed in a groove shape having an inner side wall with an internal thread, the button head connection portion is formed with an external thread matching the internal thread of the first connection portion, and the first connection portion and the button head connection portion are fastened and connected with the external thread through the internal thread.
Preferably, the joint of the ejector rod part and the sealing part is formed in a step state that the cross-sectional diameter of the ejector rod part is larger than that of the sealing part, and the cross-sectional diameter of the rod body is smaller than that of the sealing part.
Preferably, a piston is formed at the end of the rod body, a piston hole axially penetrating through the tail seat part is formed at the central position of the tail seat part, a support axially penetrating through the piston hole is formed on the hole wall of the piston hole, and the piston is tightly attached to the top surface of the support and axially moves along the piston hole.
Preferably, a backflow prevention pad is installed on the bottom surface of the second cavity of the pump housing, and the backflow prevention pad is a one-way flow valve.
Preferably, the inner side wall of the first cavity is provided with an anti-slip indent along the circumferential direction, the outer side wall of the second connecting portion is provided with an anti-slip protrusion at a position corresponding to the anti-slip protrusion, and the protection protrusion of the second connecting portion embedded into the first cavity is located in the anti-slip indent.
Preferably, the pressing head is positioned in the first flow passage and protrudes outwards to form a top projection at a position corresponding to the top surface of the ejector rod part, and the distance between the surface of the top projection and the top surface of the ejector rod part is greater than the height of the sealing part.
Preferably, the top of the bottle cap is concave to form a movable groove for the press head to freely move up and down, the bottom surface of the movable groove forms a mounting hole for mounting the pump assembly, and the bottle cap is positioned below the mounting hole and forms a mounting interface for mounting the bottle cap on a cosmetic container.
In order to solve the technical problem, the technical scheme of the invention also provides a working method of the pump head for the cosmetic container, wherein the working method comprises the following steps:
mounting and fastening a pump head structure on a bottle mouth of the cosmetic container, and hermetically connecting the pump head with the cosmetic container;
pressing the press head, compressing the elastic body downwards through the press head connecting part by the press head, sliding a liquid outlet hole of the elastic body from a sealing part of the backflow prevention rod to the rod body in the compression process, and generating a gap between the liquid outlet hole and the rod body when the liquid outlet hole slides to the position of the rod body as the section diameter of the rod body is smaller than that of the sealing part, so that the cosmetic liquid in the accommodating cavity flows to the first flow channel from the gap;
continuously pressing the press head, enabling the top projection of the press head to be in contact with the top rod part of the anti-backflow rod and enabling the anti-backflow rod to move downwards along with the press head, further compressing the accommodating cavity, enabling the cosmetic liquid in the accommodating cavity to continuously flow to the first flow channel from the gap, and enabling the cosmetic liquid to flow to the nozzle from the first flow channel and flow out from the nozzle after the first flow channel is filled with the cosmetic liquid;
and when the press head is loosened, the elastic body rebounds, the liquid outlet hole of the elastic body rebounds from the rod body of the backflow prevention rod to the sealing part and forms sealing connection with the sealing part, rebounds continuously, rebounds to the step formed between the sealing part and the ejector rod part, and drives the backflow prevention rod to rebound towards the press head direction together.
In the rebounding process, the volume of the accommodating cavity is expanded to enable the accommodating cavity to generate negative pressure with the pressure lower than the internal pressure of the cosmetic container, the cosmetic liquid in the cosmetic container enters the second cavity in the pump shell through the one-way anti-backflow pad at the liquid inlet hole and rebounds continuously, and the cosmetic liquid in the second cavity enters the accommodating cavity through the piston hole of the tail seat part.
The technical scheme of the invention has the beneficial effects that:
according to the invention, the pump assembly is simplified into three main components, namely the elastic body, the anti-reflux rod and the pump shell, the elastic body plays a role of a spring, and can be matched with the anti-reflux rod and the press head to generate negative pressure to play a role of extracting cosmetic liquid from a cosmetic container, and meanwhile, the accommodating cavity formed by the elastic body can also be used for temporarily storing and circulating the cosmetic liquid. The pump head structure of the invention adopts PP material, thus reducing the workload of the recovery link after the pump structure is used, and being capable of being popularized and used in large scale.
Drawings
FIG. 1 is a schematic structural diagram of a pump head according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a button head according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of an elastomer in an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a backflow prevention rod in an embodiment of the present invention;
FIG. 5 is a bottom view of the backflow prevention rod in an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a pump housing in an embodiment of the invention.
Wherein, 1-press head; 2-a pump assembly; 3-bottle cap; 4-anti-reflux pad; 11-a press head connection; 12-a nozzle; 13-a first flow channel; 14-top convex; 15-a stabilizer; 21-an elastomer; 22-anti-reflux rod; 23-a pump housing; 31-a movable slot; 32-an installation interface; 151-a stopper; 152-bending part; 211-a containment chamber; 212-a first connection; 213-liquid outlet hole; 214-a second connection; 221-a stem portion; 222-a seal; 223-a rod body; 224-a tail seat portion; 231-a first cavity; 232-a second cavity; 233-liquid inlet hole; 234 — a second flow channel; 235-a flange; 2141-anti-slip protrusions; 2231-a piston; 2241-a piston bore; 2242-a support; 2311-antiskid and concave;
the specific implementation mode is as follows:
the invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
Referring to fig. 1, 2, 3, 4 and 6, a pump head structure for a cosmetic container according to the present invention is shown, which includes a push head 1, a pump assembly 2 and a bottle cap 3. The pump assembly 2 comprises an elastic body 21, a backflow prevention rod 22 and a pump shell 23, wherein the elastic body 21 comprises a first connecting part 212, a liquid outlet hole 213, a containing cavity 211 and a second connecting part 214 which are formed from top to bottom, the backflow prevention rod 22 comprises a top rod part 221, a sealing part 222, a rod body 223 and a tail seat part 224 which are formed from top to bottom, and the pump shell 23 is provided with a first cavity 231, a second cavity 232, a liquid inlet hole 233, a second flow channel 234 and a flange 235; the press head 1 includes a nozzle 12, a first flow path 13, a press head connecting portion 11, a top projection 14, and a stabilizing portion 15; the bottle cap 3 includes a movable groove 31, a mounting hole (not shown), a mounting interface 32, and a catching groove (not shown). In the embodiment of the invention, the press head 1, the bottle cap 3, the backflow prevention rod 22 and the pump shell 23 are made of hard PP materials, and the elastic body 21 is made of soft PP materials with rebound elasticity.
The assembly steps of the pump head structure of the embodiment of the invention are as follows:
the pump housing 23 is first snapped into the mounting hole (not shown) of the closure 3: the top edge of the pump housing 23 is provided with a flange 235, a clamping groove (not shown) is arranged at the position where the bottle cap 3 is clamped with the pump housing 23, the flange 235 of the pump housing 23 after installation is clamped into the clamping groove of the bottle cap 3, and the pump housing 23 is integrally positioned in a cavity formed by the installation interface 32 of the bottle cap 3. The mounting interface 32 of the bottle cap 3 in the embodiment of the invention is arranged for fastening the bottle cap 3 to a cosmetic container, and after the bottle cap 3 is fastened and connected with the cosmetic container, the pump shell 23 is arranged at the bottleneck of the cosmetic container;
the second connecting portion 214 of the elastic body 21 is then snapped into the first cavity 231 of the pump housing 23: the outer diameter of the second connecting portion 214 of the elastic body 21 is slightly larger than the inner diameter of the first cavity 231 of the pump housing 23, and the elastic body 21 made of soft PP material has certain ductility and elasticity, so the second connecting portion 214 of the elastic body 21 can be fastened in the first cavity 231 of the pump housing 23 by the elastic tension of the second connecting portion 214. The accommodating cavity 211 of the elastomer 21 after connection is positioned in the movable groove 31 of the bottle cap 3, and a space for the free up and down movement of the press head 1 is left between the outer wall of the accommodating cavity 211 of the elastomer 21 and the inner wall of the movable groove 31 of the bottle cap 3.
The backflow prevention rod 22 is then installed in the receiving cavity 211 of the elastic body 21: the sealing portion 222 of the installed backflow-preventing rod 22 is hermetically connected with the liquid outlet hole 213 of the elastic body 21, the tailstock portion 224 of the backflow-preventing rod 22 is hermetically connected with the second connecting portion 214 of the elastic body 21, the top rod portion 221 of the backflow-preventing rod 22 is located in the cavity formed by the first connecting portion 212 of the elastic body 21, and the rod body 223 of the backflow-preventing rod 22 is located in the accommodating cavity 211 of the elastic body 21. In the embodiment of the present invention, the diameter of the liquid outlet 213 is smaller than the cross-sectional diameter of the sealing portion 222, and the diameter of the inner cavity of the second connecting portion 214 of the elastic body 21 is smaller than the outer diameter of the tail portion 224, so that the liquid outlet 213 of the elastic body 21 is tightly sleeved on the sealing portion 222 of the backflow prevention rod 22 and the second connecting portion 214 of the elastic body 21 is tightly sleeved on the tail portion 224 of the backflow prevention rod 22 due to the elastic ductility of the elastic body 21. The stem part 221 and the sealing part 222 of the backflow prevention rod 22 are formed in a step shape in which the cross-sectional diameter of the stem part 221 is larger than that of the sealing part 222, so as to prevent the liquid outlet hole 213 of the elastic body 21 from moving from the sealing part 222 to the stem part 221, and as shown in fig. 1, the liquid outlet hole 213 is prevented from moving from the sealing part 222 to the stem part 221 at the step surface where the stem part 221 and the sealing part 222 are connected. Through the above arrangement, when the liquid outlet hole 213 of the elastic body 21 moves from the sealing portion 222 of the backflow prevention rod 22 to the rod body 223, a gap is formed between the edge of the liquid outlet hole 213 and the rod body 223, and the cosmetic liquid in the accommodating cavity 211 flows out of the liquid outlet hole 213 from the gap.
Finally, the button 1 is connected to the elastic body 21: the head connecting portion 11 of the head 1 is fastened to the first connecting portion 212 of the elastic body 21. In the embodiment of the present invention, the button head connecting portion 11 is formed with an external thread (not shown), the first connecting portion 212 of the elastic body 21 is formed with an internal thread (not shown) matching with the external thread, and the button head 1 and the elastic body 21 are connected by the external thread and the internal thread to realize a fastening connection. The first flow channel 13 of the connected press head 1 is communicated with the accommodating cavity 211 through the liquid outlet hole 213 of the elastic body 21, the stabilizing part 15 of the press head 1 is positioned in the space between the outer wall of the accommodating cavity 211 and the inner wall of the movable groove 31, and the top protrusion 14 of the press head 1 is positioned at the position opposite to the top surface of the top rod part 221 of the backflow preventing rod 22.
In particular, the assembly step is one of the assembly methods of the present invention, and the assembly step may be disturbed, so that the pump head structure can be finally assembled into a finished state.
In the embodiment of the invention, the tail end of the stabilizing part 15 of the press head 1 protrudes outwards towards one side of the bottle cap 3 to form the limiting part 151, and is bent towards one side of the elastic body 21 to form the bending part 152, in the process that the press head 1 moves up and down in the movable groove 31 of the bottle cap 3, the limiting part 151 is tightly attached to the inner side wall of the movable groove 31 of the bottle cap 3, the tail end of the bending part 152 is tightly attached to the outer side wall of the accommodating cavity 211 of the elastic body 21, the arrangement of the limiting part 151 and the bending part 152 ensures the stability of the press head 1 when moving up and down in the movable groove 31, the press head 1 can move vertically instead of obliquely when moving up and down, the abrasion of the press head 1 and the bottle cap 3 and the damage of the joint of the press head 1 and the elastic body 21.
In the embodiment of the present invention, the top protrusion 14 is formed to protrude toward the second flow path 234 at the inner side of the top of the button head 1, the top protrusion 14 is disposed to face the top surface of the top rod part 221 of the backflow preventing rod 22, the distance between the top protrusion 14 and the top surface of the top rod part 221 is greater than the height of the sealing part 222 of the backflow preventing rod 22, the purpose of the above arrangement is that when the press head 1 is pressed, the press head connecting part 11 pushes the liquid outlet hole 213 of the elastic body 21 from the sealing part 222 of the backflow preventing rod 22 to the rod body 223, the backflow preventing rod 22 is pressed by the top protrusion 14 of the button 1 and moves downward together with the button 1, if the distance between the boss 14 and the top surface of the top bar portion 221 is not set to be greater than the height of the sealing portion 222 of the backflow preventing rod 22, that is, when the liquid outlet hole 213 is not completely separated from the sealing portion 222, the backflow prevention rod 22 and the elastic body 21 move downward together with the press head 1, and the cosmetic liquid in the housing cavity 211 of the elastic body 21 cannot flow out from the liquid outlet hole 213.
In the embodiment of the present invention, the rod body 223 of the backflow prevention rod 22 is connected to the tail seat portion 224 by a piston 2231, the tail portion of the rod body 223 is formed with a piston 2231, the tail seat portion 224 is formed with a piston hole 2241 axially penetrating along the tail seat portion 224, a support 2242 is formed on the inner side wall of the piston hole 2241 axially protruding along the piston hole 2241, as shown in fig. 5, the piston 2231 abuts against the top surface of the protruding support 2242 and moves along the top surface of the support 2242, a passage for flowing cosmetic liquid is formed between the piston 2231, the support 2242 and the inner side wall of the piston hole 2241, and the passage communicates the accommodation chamber 211 of the elastic body 21 and the second cavity 232 of the pump housing 23.
In the embodiment of the present invention, the anti-slip recess 2311 is disposed on the inner side wall of the first cavity 231, the anti-slip protrusion 2141 is disposed on the outer side wall of the second connection portion 214, and when the second connection portion 214 of the elastic body 21 is inserted into the first cavity 231 of the pump housing 23, the anti-slip protrusion 2141 is located in the anti-slip recess 2311, and the combination manner of the anti-slip protrusion 2141 and the anti-slip recess 2311 increases the friction force between the second connection portion 214 of the elastic body 21 and the inner side wall of the first cavity 231 of the pump housing 23, so as to further increase the fastening stability of the elastic body 21 and the pump housing 23.
In the embodiment of the present invention, a liquid inlet 233 for allowing the cosmetic liquid to flow from the second flow channel 234 to the second cavity 232 is disposed between the second cavity 232 and the second flow channel 234 of the pump housing 23, and in order to control the one-way flow of the cosmetic liquid, that is, the cosmetic liquid can only flow from the second flow channel 234 to the second cavity 232, the anti-backflow pad 4 is installed between the bottom of the second cavity 232 and the liquid inlet 233, and the anti-backflow pad 4 selected in the present invention is a conventional one-way valve structure in the existing design, and is not described herein again.
In the present invention, the overall flow direction of the cosmetic liquid is: cosmetic liquid enters the second flow passage 234 from the cosmetic container, enters the second chamber 232 through the backflow prevention pad 4 of the liquid inlet hole 233, enters the accommodating chamber 211 from the second chamber 232 through the piston hole 2241 of the tail seat portion 224, then enters the first flow passage 13 from the accommodating chamber 211 through the liquid outlet hole 213, and finally flows out of the pump head from the second flow passage 234 through the nozzle 12.
The method for realizing the flowing of the cosmetic liquid comprises the following steps:
pressing the press head 1, compressing the elastic body 21 downwards by the press head 1 through the press head connecting part 11, sliding the liquid outlet hole 213 of the elastic body 21 from the sealing part 222 of the backflow prevention rod 22 to the rod body 223 in the compression process, generating a gap between the liquid outlet hole 213 and the rod body 223 when the liquid outlet hole 213 slides to the position of the rod body 223 because the cross-sectional diameter of the rod body 223 is smaller than that of the sealing part 222, and flowing the cosmetic liquid stored in the accommodating cavity 211 to the first flow channel 13 from the gap;
continuously pressing the press head 1, enabling the top protrusion 14 of the press head 1 to be in contact with the top rod part 221 of the backflow prevention rod 22 and enabling the backflow prevention rod 22 to move downwards along with the press head 1, further compressing the accommodating cavity 211, enabling the cosmetic liquid in the accommodating cavity 211 to continuously flow to the first flow channel 13 from the gap, and enabling the cosmetic liquid to flow to the nozzle 12 from the first flow channel 13 and flow out from the nozzle 12 after the first flow channel 13 is filled;
when the press head 1 is released, the elastic body 21 rebounds, the liquid outlet hole 213 of the elastic body 21 rebounds from the rod body 223 of the backflow prevention rod 22 to the sealing part 222 and forms a sealing connection with the sealing part 222, rebounds continuously, and the liquid outlet hole 213 rebounds to a step formed between the sealing part 222 and the top rod part 221 and drives the backflow prevention rod 22 to rebound towards the press head 1.
In the rebounding process, the volume of the accommodating cavity 211 is expanded to enable the pressure generated in the accommodating cavity 211 to be lower than the pressure inside the cosmetic container, namely, negative pressure is formed in the accommodating cavity 211 relative to the cosmetic container, the cosmetic liquid in the cosmetic container enters the second cavity 232 in the pump housing 23 through the backflow preventing pad 4 at the liquid inlet hole 233 to continue rebounding, and the cosmetic liquid in the second cavity 232 enters the accommodating cavity 211 through the piston hole 2241 of the tail seat part 224 to supplement the cosmetic liquid flowing out of the accommodating cavity 211.
In summary, the pump assembly is simplified into three main components, namely the elastic body, the backflow prevention rod and the pump shell, the elastic body plays a role of a spring, and can be matched with the backflow prevention rod and the press head to generate negative pressure to play a role of extracting the cosmetic liquid from the cosmetic container, and meanwhile, the accommodating cavity formed by the elastic body can also be used for temporarily storing and circulating the cosmetic liquid. The pump head structure of the invention adopts PP material, thus reducing the workload of the recovery link after the pump structure is used, and being capable of being popularized and used in large scale.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a pump head structure for cosmetic container, includes press head, pump assembly and bottle lid, its characterized in that, the pump assembly includes the elastomer, prevents against current pole and pump shell, the elastomer forms both ends open-ended and holds the chamber, prevent against current pole axial run through set up in hold the inside of chamber and with hold the both ends opening part sealing connection in chamber, the one end of elastomer with press the head to be connected, the other end embedding of elastomer the inside of pump shell.
2. A pump head structure for a cosmetic container as set forth in claim 1, wherein the push head is formed with a push head connecting portion, a nozzle, and a first flow path communicating the nozzle with the accommodating chamber, the elastic body is provided with a first connecting part connected with the press head connecting part, a liquid outlet hole communicated with the first flow channel and the accommodating cavity, and a second connecting part embedded in the pump shell, the anti-reflux rod comprises a top rod part positioned in the first flow channel, a sealing part used for sealing the liquid outlet hole, a rod body positioned in the accommodating cavity and a tailstock part hermetically connected with the second connecting part, the pump housing comprises a first cavity used for containing the elastic body and the tail seat part, a second cavity used for containing cosmetic liquid flowing from the liquid inlet hole, a liquid inlet hole formed in the bottom of the second cavity, and a second flow channel communicated with the second cavity through the liquid inlet hole.
3. A pump head structure for a cosmetic container according to claim 2, wherein the first connecting portion of the elastic body is formed in a groove shape having an internal thread on an inner side wall thereof, the push head connecting portion is formed with an external thread that matches the internal thread of the first connecting portion, and the first connecting portion and the push head connecting portion are fastened to the external thread through the internal thread.
4. A pump head structure for a cosmetic container as set forth in claim 2, wherein the connection of the stem portion and the seal portion is formed in a stepped state in which the cross-sectional diameter of the stem portion is larger than that of the seal portion, and the cross-sectional diameter of the stem portion is smaller than that of the seal portion.
5. A pump head structure for a cosmetic container as set forth in claim 2, wherein the rod body has a piston formed at an end thereof, the tail portion has a piston hole formed at a central position thereof and extending axially therethrough, and a support member is formed at a hole wall of the piston hole and extending axially therethrough, the piston abutting against a top surface of the support member and moving axially along the piston hole.
6. A pump head structure for a cosmetic container as set forth in claim 2, wherein a backflow prevention pad is installed at a bottom surface of the second chamber of the pump housing, the backflow prevention pad being a one-way flow valve.
7. A pump head structure for a cosmetic container according to claim 2, wherein an anti-slip recess is provided in an inner side wall of the first chamber in a circumferential direction, an anti-slip projection is provided at a position corresponding to the anti-slip projection on an outer side wall of the second connecting portion, and the protection projection of the second connecting portion fitted into the first chamber is located in the anti-slip recess.
8. A pumphead structure for a cosmetic container as set forth in claim 2, wherein the pressing head is formed to protrude outward in the first flow path at a position corresponding to the top surface of the plunger portion, and a surface of the protruding portion is spaced apart from the top surface of the plunger portion by a distance greater than a height of the seal portion.
9. A pump head structure for a cosmetic container as set forth in claim 1, wherein the top of the cap is recessed to form a movable groove for the pressing head to move freely up and down, a bottom surface of the movable groove forms a mounting hole for mounting the pump unit, and the cap is formed with a mounting port for mounting to a cosmetic container below the mounting hole.
10. A working method of a pump head for a cosmetic container is characterized by comprising the following steps:
mounting and fastening a pump head structure on a bottle mouth of the cosmetic container, and hermetically connecting the pump head with the cosmetic container;
pressing the press head, compressing the elastic body downwards through the press head connecting part by the press head, sliding a liquid outlet hole of the elastic body from a sealing part of the backflow prevention rod to the rod body in the compression process, and generating a gap between the liquid outlet hole and the rod body when the liquid outlet hole slides to the position of the rod body as the section diameter of the rod body is smaller than that of the sealing part, so that the cosmetic liquid in the accommodating cavity flows to the first flow channel from the gap;
continuously pressing the press head, enabling the top projection of the press head to be in contact with the top rod part of the anti-backflow rod and enabling the anti-backflow rod to move downwards along with the press head, further compressing the accommodating cavity, enabling the cosmetic liquid in the accommodating cavity to continuously flow to the first flow channel from the gap, and enabling the cosmetic liquid to flow to the nozzle from the first flow channel and flow out from the nozzle after the first flow channel is filled with the cosmetic liquid;
and when the press head is loosened, the elastic body rebounds, the liquid outlet hole of the elastic body rebounds from the rod body of the backflow prevention rod to the sealing part and forms sealing connection with the sealing part, rebounds continuously, rebounds to the step formed between the sealing part and the ejector rod part, and drives the backflow prevention rod to rebound towards the press head direction together.
In the rebounding process, the volume of the accommodating cavity is expanded to enable the accommodating cavity to generate negative pressure with the pressure lower than the internal pressure of the cosmetic container, the cosmetic liquid in the cosmetic container enters the second cavity in the pump shell through the one-way anti-backflow pad at the liquid inlet hole and rebounds continuously, and the cosmetic liquid in the second cavity enters the accommodating cavity through the piston hole of the tail seat part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010502467.1A CN111480963A (en) | 2020-06-05 | 2020-06-05 | Pump head structure for cosmetic container and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010502467.1A CN111480963A (en) | 2020-06-05 | 2020-06-05 | Pump head structure for cosmetic container and working method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111480963A true CN111480963A (en) | 2020-08-04 |
Family
ID=71810590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010502467.1A Pending CN111480963A (en) | 2020-06-05 | 2020-06-05 | Pump head structure for cosmetic container and working method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111480963A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022165995A1 (en) * | 2021-02-07 | 2022-08-11 | 余姚市丹丹喷雾器有限公司 | All-plastic pressure pump |
| WO2022233077A1 (en) * | 2021-05-06 | 2022-11-10 | 江门敬记塑胶厂有限公司 | All-plastic emulsion pump and distribution container |
-
2020
- 2020-06-05 CN CN202010502467.1A patent/CN111480963A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022165995A1 (en) * | 2021-02-07 | 2022-08-11 | 余姚市丹丹喷雾器有限公司 | All-plastic pressure pump |
| WO2022233077A1 (en) * | 2021-05-06 | 2022-11-10 | 江门敬记塑胶厂有限公司 | All-plastic emulsion pump and distribution container |
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