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WO2022135484A1 - 一种外置弹簧自锁式按压泵结构 - Google Patents

一种外置弹簧自锁式按压泵结构 Download PDF

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Publication number
WO2022135484A1
WO2022135484A1 PCT/CN2021/140523 CN2021140523W WO2022135484A1 WO 2022135484 A1 WO2022135484 A1 WO 2022135484A1 CN 2021140523 W CN2021140523 W CN 2021140523W WO 2022135484 A1 WO2022135484 A1 WO 2022135484A1
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WO
WIPO (PCT)
Prior art keywords
locking
pump
pump rod
chamber
boss
Prior art date
Application number
PCT/CN2021/140523
Other languages
English (en)
French (fr)
Inventor
梁配辉
朱茂勇
张永雷
梁金考
Original Assignee
中山市美捷时包装制品有限公司
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Application filed by 中山市美捷时包装制品有限公司 filed Critical 中山市美捷时包装制品有限公司
Publication of WO2022135484A1 publication Critical patent/WO2022135484A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1059—Means for locking a pump or its actuation means in a fixed position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1043—Sealing or attachment arrangements between pump and container
    • B05B11/1046—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container
    • B05B11/1047—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container the pump being preassembled as an independent unit before being mounted on the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1066—Pump inlet valves
    • B05B11/1067—Pump inlet valves actuated by pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1073—Springs
    • B05B11/1074—Springs located outside pump chambers

Definitions

  • the invention relates to an external spring self-locking type pressing pump structure.
  • the pressing pump is generally an integral structure, that is, the pump core, the lock bottle cap and the pressing head are assembled and fixed.
  • the lock bottle cap is fixed on the pump core through the outer lock cover, the inner lock cover, etc., which is not flexible enough to use.
  • the locking structure is usually inside the upper pump rod and the locking cover, resulting in high manufacturing cost of parts.
  • the present invention has been made based on this situation.
  • the purpose of the present invention is to overcome the deficiencies of the prior art and provide an external spring self-locking pressing pump structure, which has the characteristics of simple structure, sanitation and safety, flexible use and low manufacturing cost.
  • An external spring self-locking pressing pump structure comprises a pump body, a pressing head, an upper pump rod, a piston, a bottle lock cap and a locking cap, the pump body comprises an upper chamber and a lower chamber of a stepped structure, so the
  • the locking cover includes a snap-fit portion fixed to the lower portion of the upper chamber, a locking portion extending upward into the upper chamber and a limiting portion extending downward into the lower chamber.
  • the cover is hollow and the upper pump rod is located inside the locking cover. The upper end of the upper pump rod is connected with the pressing head through the locking cover, and the lower end is connected with the piston through the locking cover.
  • the outer side of the upper pump rod is sleeved with a spring, so
  • the spring is arranged in the locking cover, the lower part of the locking cover is provided with a support part that protrudes inwardly to support the spring, and the upper outer surface of the upper pump rod is provided with a pressing boss for the spring to press upward.
  • the pump body is provided with a one-way valve at the lower end of the lower chamber for the liquid to enter, and a locking device that can lock the pressing head so that it cannot be pressed is arranged between the locking cover and the pressing head.
  • the pressing head includes an inner cylinder and an outer cylinder, the inner cylinder is connected with the upper pump rod and can move up and down in the locking part, and the outer cylinder is sleeved.
  • the outer cylinder is sleeved.
  • a guide plate is arranged between the inner cylinder and the outer cylinder, and the locking part is provided with
  • the plate comes out of the locking step by itself and falls into the locking boss in the guide groove.
  • the locking step is located on the other side of the locking boss and is provided with a baffle plate for blocking the rotation of the guide plate.
  • the locking step, the locking boss, the baffle and the The guide plate constitutes a locking device to lock the pressing head on the locking cover.
  • an external spring self-locking press pump structure is provided with a guide angle between the locking step and the guide groove, and the piston is provided with an inner part that can be pressed against the bottom of the support part when the press head bounces up.
  • the guide plate slides into the locking step along the guide angle, and the inner sleeve is pressed against the bottom of the support part.
  • an external spring self-locking press pump structure the inner diameter of the upper chamber of the pump body is larger than the inner diameter of the lower chamber, and the lower part of the upper chamber is provided with an inwardly protruding annular boss , the bottom of the upper chamber is located below the boss and is provided with a laterally concave annular buckle groove, the boss and the buckle groove are connected up and down to form an "S"-shaped buckle structure, the clipping part is The outer side is provided with a snap ring that is snapped into the snap groove, and a concave ring for the boss to be snapped into.
  • the pump body is provided with a plurality of ribs that interfere with the locking cover along the circumferential direction above the boss. , used to prevent the locking cover and the pump body from rotating and loosening each other.
  • the upper pump rod is hollow and its lower end is closed, the lower part of the upper pump rod is provided with a side port that communicates with its interior, and the upper pump rod is An upper limit table and a lower limit table are arranged at the top and bottom of the side port, a movable sleeve that can move up and down between the upper limit table and the lower limit table is arranged on the piston, and a lower end of the movable sleeve is provided with The lower limit table cooperates with the sealing ring to realize the sealing connection.
  • the lower limit table When the lower limit table is pressed upward on the sealing ring, the communication between the inside of the upper pump rod and the lower chamber is cut off; when the upper pump rod moves downward, the lower limit table
  • the upper pump rod is connected to the lower chamber through the side port, and the upper limit table can be pressed down on the upper end of the movable sleeve after moving down for a certain distance to push the piston to move down together.
  • the two At the upper end of the movable sleeve, the two are connected in a sealed manner, and the upper end of the piston is provided with a convex ring that protrudes inwardly and is tightly connected with the outer side wall of the upper pump rod by interference fit.
  • the one-way valve comprises a ball.
  • a sealing gasket is arranged on the inner side of the locking bottle cap, and a suction pipe is connected to the lower end of the pump body.
  • the present invention has the following advantages:
  • the present invention has simple structure, few components, easy assembly and low manufacturing cost.
  • the structure of the pressing pump of the present invention is composed of a pump body, an upper pump rod, a piston, a locking cover, a spring and a one-way valve. And limited between the support part and the top pressure boss, the piston is sleeved on the upper pump rod and pressed against the bottom of the locking cover when the spring bounces the upper pump rod to prevent the upper pump rod and the spring from coming out, thus forming an independent pump rod.
  • the pump core stored and transported enables the pump core to be used as a standard component, so that in the subsequent production and assembly process, different press heads and lock bottle caps can be matched as required, to meet the needs of different customers and use occasions, and to increase the flexibility of use. Reduce product development and manufacturing costs.
  • the channel for conveying the material body is located inside the upper pump rod, and the spring is located outside the upper pump rod, which can avoid the contact between the spring and the material body, prevent the material body from being corroded and polluted, and also avoid metallic spring corrosion.
  • the pressing head includes an inner cylinder and an outer cylinder, the inner cylinder is connected with the upper pump rod and can move up and down in the locking part, the outer cylinder is sleeved outside the locking part, and the upper There is a gap for the outer cylinder to slide up and down between the inner wall of the chamber and the locking part, a guide plate is arranged between the inner cylinder and the outer cylinder, and the locking part is provided with a guide groove for the guide plate to move up and down, The upper end of the locking portion is provided with a locking step for the guide plate to be rotated and clamped to restrict the downward movement of the guide plate when the pressing head bounces up.
  • the locking boss, the locking step is located on the other side of the locking boss and is provided with a baffle for blocking the rotation of the guide plate, the locking step, the locking boss, the baffle and the guide plate form a locking device to lock the pressing head in the
  • the locking device is arranged on the upper end of the locking cover and the lower end of the pressing head, the structure is simple, the corresponding parts are easy to manufacture, and the cost is reduced.
  • FIG. 1 is an exploded view of a structure of an external spring self-locking pressing pump of the present invention
  • FIG. 2 is a sectional view of an external spring self-locking pressing pump structure of the present invention in a self-locking state
  • Fig. 3 is a sectional view along A-A in Fig. 2;
  • Fig. 4 is the structural representation of pressing head
  • FIG. 5 is a schematic view of the structure of the locking cover.
  • an external spring self-locking press pump structure includes a pump body 1, a pressing head 2, an upper pump rod 3, a piston 4, a bottle locking cap 5 and a locking cap 6.
  • the pump body 1 includes an upper chamber 11 and a lower chamber 12 with a stepped structure
  • the locking cover 6 includes a snap-fit portion 61 fixed to the lower portion of the upper chamber 11 and extending upward into the upper chamber 11
  • the locking portion 62 and the limiting portion 63 extending downward into the lower chamber 12, the locking cover 6 is hollow and the upper pump rod 3 is located inside the locking cover 6, and the upper end of the upper pump rod 3 passes through the lock
  • the tightening cover 6 is connected with the pressing head 2, the lower end is connected with the piston 4 through the locking cover 6, the outer side of the upper pump rod 3 is sleeved with a spring 7, and the spring 7 is arranged in the locking cover 6, and the locking
  • the lower part of the cover 6 is provided with a support portion 64 that protrudes inwardly to support the spring 7, and the upper outer surface
  • a one-way valve 8 is provided at the lower end of the lower chamber 12 for the liquid to enter.
  • the one-way valve 8 includes a ball 81, and between the locking cover 6 and the pressing head 2, there is a device for locking the pressing head 2.
  • a sealing gasket 9 is provided on the inner side of the bottle lock cap 5, and a suction pipe 10 is connected to the lower end of the pump body 1, which has a simple structure and is easy to manufacture.
  • the above-mentioned pressing pump structure is composed of a pump body 1, an upper pump rod 3, a piston 4, a locking cover 6, a spring 7, and a one-way valve 8.
  • the locking cover 6 is fixed with the pump body 1 through the clamping part 61, and the spring 7 is located in the locking cover 6 and is limited between the support portion 64 and the pressing boss 31, the piston 4 is sleeved on the upper pump rod 3 and pressed against the bottom of the locking cover 6 when the spring 7 bounces the upper pump rod 3
  • the upper pump rod 3 and the spring are prevented from coming out, so as to form a pump core that can be stored and transported independently, so that the pump core can be used as a standard component, so that in the subsequent production and assembly process, different press heads and lock bottle caps can be matched as required. Meet the needs of different customers and use cases, increase the flexibility of use, and reduce product development and manufacturing costs.
  • the channel for conveying the material body is located inside the upper pump rod 3, and the spring 7 is located outside the upper pump rod 3, which can avoid the contact between the spring 7 and the material body, can prevent the material body from being corroded and polluted, and can also avoid metallic spring corrosion. .
  • the pressing head 2 includes an inner cylinder 21 and an outer cylinder 22, the inner cylinder 21 is connected with the upper pump rod 3 and can move up and down in the locking portion 62, and the outer cylinder 22 is sleeved on the outside of the locking portion 62, A gap for the outer cylinder 22 to slide up and down is left between the inner wall of the upper chamber 11 and the locking portion 62 , a guide plate 23 is provided between the inner cylinder 21 and the outer cylinder 22 , and the locking portion 62 is provided with a guide plate 23 .
  • the locking step 622 is provided with a locking boss 623 to prevent the guide plate 23 from falling out of the locking step 622 and falling into the guide groove 621.
  • the locking step 622 is located on the other side of the locking boss 623.
  • the baffle 624, the locking step 622, the locking boss 623, the baffle 624 and the guide plate 23 form a locking device to lock the pressing head 2 on the locking cover 6, and the locking device is arranged on the upper end of the locking cover 6 and the lower end of the pressing head , the structure is simple, the corresponding parts are easy to manufacture, and the cost is reduced.
  • a guide angle 625 is provided between the locking step 622 and the guide groove 621, and the piston 4 is provided with an inner sleeve 41 that can press against the bottom of the support portion 64 when the pressing head 2 bounces up. Rotate, the guide plate 23 slides into the locking step 622 along the guide angle 625, the inner sleeve 41 is pressed against the bottom of the support part 64, so that after self-locking, the pressing head, the upper pump rod, the piston and the locking cover can be tightly locked together to improve the stability of the locked state.
  • the inner diameter of the upper chamber 11 of the pump body 1 is larger than the inner diameter of the lower chamber 12 , the lower part of the upper chamber 11 is provided with an inwardly protruding annular boss 14 , and the bottom of the upper chamber 11 is located in the convex
  • the bottom of the platform 14 is provided with a laterally concave annular buckle groove 13, the boss 14 and the buckle groove 13 are connected up and down to form an “S”-shaped buckle structure, and the outer side of the buckle portion 61 is provided with a buckle A snap ring 611 in the snap groove 13 and a concave ring 612 for the boss 14 to be snapped into.
  • the pump body 1 is provided with a plurality of interfering rings 612 interfering with the locking cover 6 at the upper part of the boss 14 in the circumferential direction.
  • the rib 15 has a simple structure and is firmly fixed, which can prevent the locking cover 6 and the pump body 1 from rotating and loosening each other.
  • the upper pump rod 3 is hollow and its lower end is closed, the lower part of the upper pump rod 3 is provided with a side port 32 that communicates with the inside thereof, and the upper pump rod 3 is provided with an upper limit table above and below the side port 32 33 and the lower limit stage 34, the piston 4 is provided with a movable sleeve 42 that can move up and down between the upper limit stage 33 and the lower limit stage 34, and the lower end of the movable sleeve 42 is provided with the lower limit stage 34.

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Abstract

本发明公开了一种外置弹簧自锁式按压泵结构，包括泵体、按头、上泵杆、活塞、锁瓶盖和锁紧盖，泵体包括阶梯结构的上腔室和下腔室，锁紧盖包括卡接固定在上腔室的下部的卡接部，以及向上伸入在上腔室中的锁紧部和向下伸入在下腔室中的限位部，锁紧盖中空且上泵杆位于锁紧盖内侧，上泵杆上端穿过锁紧盖与按头连接，下端穿过锁紧盖与活塞连接，上泵杆外侧套设有弹簧，弹簧设在锁紧盖内，锁紧盖下部设有向内凸出用以支撑弹簧的支撑部，上泵杆上部外侧面上设有供弹簧向上顶压的顶压凸台，泵体内位于下腔室的下端设有供液体进入的单向阀，锁紧盖和按头之间设有能将按头锁定使其无法按下的锁定装置，结构简单，泵芯可独立出来，使用灵活方便。

Description

一种外置弹簧自锁式按压泵结构
本申请要求于2020年12月23日提交中国专利局、申请号为202011537778.8、发明名称为“一种外置弹簧自锁式按压泵结构”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及一种外置弹簧自锁式按压泵结构。
背景技术
现有的按压泵结构多是采用内置弹簧的结构设计，金属弹簧直接接触料体，容易腐蚀金属弹簧，不够环保。而且按压泵一般都是整体结构，即泵芯、锁瓶盖和按头是组装固定的，在组装的时候通过外锁盖、内锁盖等将锁瓶盖固定在泵芯上，使用不够灵活。或者是按压泵整体组装时，其锁定结构通常是在上泵杆和锁紧盖的内部，造成零部件制造成本高。
本发明就是基于这种情况作出的。
发明内容
本发明目的是克服了现有技术的不足，提供一种外置弹簧自锁式按压泵结构，具有结构简单、卫生安全、使用灵活、制造成本低的特点。
本发明是通过以下技术方案实现的：
一种外置弹簧自锁式按压泵结构，包括泵体、按头、上泵杆、活塞、锁瓶盖和锁紧盖，所述泵体包括阶梯结构的上腔室和下腔室，所述锁紧盖包括卡接固定在上腔室的下部的卡接部，以及向上伸入在上腔室中的锁紧部和向下伸入在下腔室中的限位部，所述锁紧盖中空且上泵杆位于锁紧盖内侧，所述上泵杆上端穿过锁紧盖与按头连接，下端穿过锁紧盖与活塞连接，所述上泵杆外侧套设有弹簧,所述弹簧设在锁紧盖内，所述锁紧盖下部设有向内凸出用以支撑弹簧的支撑部，所述上泵杆上部外侧面上设有供弹簧向上顶压的顶压凸台，所述泵体内位于下腔室的下端设有供液体进入的单向阀，所述锁紧盖和按头之间设有能将按头锁定使其无法按下的锁定装 置。
如上所述的一种外置弹簧自锁式按压泵结构，所述按头包括内筒和外筒，所述内筒与上泵杆连接并能在锁紧部内上下活动，所述外筒套设在锁紧部外侧，所述上腔室内壁和锁紧部之间留有供外筒上下滑动的间隙，所述内筒和外筒之间设有导向板，所述锁紧部上设有供导向板上下活动的导向槽，所述锁紧部上端设有在按头弹起时供导向板旋转卡入而限制导向板向下运动的锁定台阶，所述锁定台阶上设有防止导向板自行脱出锁定台阶落入导向槽中的锁定凸台，所述锁定台阶位于锁定凸台的另一侧设有用于阻挡导向板旋转的挡板，所述锁定台阶、锁定凸台、挡板和导向板组成锁定装置将按头锁定在锁紧盖上。
如上所述的一种外置弹簧自锁式按压泵结构，所述锁定台阶和导向槽之间设有导向角，所述活塞设有在按头弹起时能够顶压在支撑部底部的内套，当按头弹起并旋转，导向板沿导向角滑入锁定台阶上，内套被压紧在支撑部的底部上。
如上所述的一种外置弹簧自锁式按压泵结构，所述泵体其上腔室的内径大于下腔室的内径，所述上腔室的下部设有向内凸出的环形凸台，所述上腔室的底部位于凸台的下方设有侧向内凹的环形扣槽，所述凸台和扣槽上下相接形成“S”形的扣接结构，所述卡接部的外侧设有扣入在扣槽中扣合环，以及供凸台卡入的凹环，所述泵体中位于凸台的上方沿圆周方向间隔设置有多个与锁紧盖干涉配合的筋条，用于防止锁紧盖和泵体两者之间相互转动及松脱。
如上所述的一种外置弹簧自锁式按压泵结构，所述上泵杆中空且其下端封闭，所述上泵杆的下部设有与其内部相连通的侧口，所述上泵杆上位于侧口的上下方设有上限位台和下限位台，所述活塞上设有能在上限位台和下限位台之间上下活动的活动套，所述活动套的下端上设有能够与下限位台相配合实现密封连接的密封环，当下限位台向上压在密封环上时切断所述上泵杆内部与下腔室的连通；当上泵杆向下运动，所述下限位台向下脱离密封环，并使所述上泵杆通过侧口与下腔室相连通，且上限位台在下移一段距离后能够压在活动套的上端推动活塞一起下移，当上限位台压在活动套的上端时，二者之间密封连接，所述活塞的上端设有向内凸出并与 上泵杆的外侧壁过盈配合而密封连接的凸环。
如上所述的一种外置弹簧自锁式按压泵结构，所述单向阀包括球珠。
如上所述的一种外置弹簧自锁式按压泵结构，所述锁瓶盖内侧设有密封垫片，所述泵体下端连接有吸管。
与现有技术相比，本发明有如下优点：
1、本发明结构简单，构件少，易于组装，制造成本低。
2、本发明的按压泵结构由泵体、上泵杆、活塞、锁紧盖、弹簧和单向阀组成的泵芯，锁紧盖通过卡接部与泵体固定，弹簧位于锁紧盖内并限定在支撑部和顶压凸台之间，活塞套在上泵杆上并在弹簧弹起上泵杆时顶压在锁紧盖底部而防止上泵杆和弹簧脱出，从而形成一个可以独立存储和运输的泵芯，使得泵芯能够作为一个标准组件，以便在后续生产组装过程中能够根据需要匹配不同按头和锁瓶盖，满足不同客户和使用场合的需求，增加使用的灵活性，降低产品开发和制造成本。
3、输送料体的通道位于上泵杆内部，而弹簧位于上泵杆外侧，能够避免弹簧和料体接触，能够避免料体被腐蚀、污染，也能避免金属性的弹簧锈蚀。
4、关于锁定装置，所述按头包括内筒和外筒，所述内筒与上泵杆连接并能在锁紧部内上下活动，所述外筒套设在锁紧部外侧，所述上腔室内壁和锁紧部之间留有供外筒上下滑动的间隙，所述内筒和外筒之间设有导向板，所述锁紧部上设有供导向板上下活动的导向槽，所述锁紧部上端设有在按头弹起时供导向板旋转卡入而限制导向板向下运动的锁定台阶，所述锁定台阶上设有防止导向板自行脱出锁定台阶落入导向槽中的锁定凸台，所述锁定台阶位于锁定凸台的另一侧设有用于阻挡导向板旋转的挡板，所述锁定台阶、锁定凸台、挡板和导向板组成锁定装置将按头锁定在锁紧盖上，锁定装置设置在锁紧盖上端和按头下端，结构简单，对应的零部件易于制造，降低成本。
附图说明
下面结合附图对本发明的具体实施方式作进一步详细说明，其中：
图1是本发明一种外置弹簧自锁式按压泵结构的爆炸图；
图2是本发明一种外置弹簧自锁式按压泵结构在自锁状态的剖视图；
图3是图2中沿A-A处的剖视图；
图4是按头的结构示意图；
图5是锁紧盖的结构示意图。
具体实施方式
下面结合附图对本发明作进一步描述：
如图1至图5所示，一种外置弹簧自锁式按压泵结构，包括泵体1、按头2、上泵杆3、活塞4、锁瓶盖5和锁紧盖6，所述泵体1包括阶梯结构的上腔室11和下腔室12，所述锁紧盖6包括卡接固定在上腔室11的下部的卡接部61，以及向上伸入在上腔室11中的锁紧部62和向下伸入在下腔室12中的限位部63，所述锁紧盖6中空且上泵杆3位于锁紧盖6内侧，所述上泵杆3上端穿过锁紧盖6与按头2连接，下端穿过锁紧盖6与活塞4连接，所述上泵杆3外侧套设有弹簧7，所述弹簧7设在锁紧盖6内，所述锁紧盖6下部设有向内凸出用以支撑弹簧7的支撑部64，所述上泵杆3上部外侧面上设有供弹簧7向上顶压的顶压凸台31，所述泵体1内位于下腔室12的下端设有供液体进入的单向阀8，所述单向阀8包括球珠81，所述锁紧盖6和按头2之间设有能将按头2锁定使其无法按下的锁定装置，所述锁瓶盖5内侧设有密封垫9，所述泵体1下端连接有吸管10，结构简单，易于生产制造。
上述按压泵结构由泵体1、上泵杆3、活塞4、锁紧盖6、弹簧7、单向阀8组成的泵芯，锁紧盖6通过卡接部61与泵体1固定，弹簧7位于锁紧盖6内并限定在支撑部64和顶压凸台31之间，活塞4套在上泵杆3上并在弹簧7弹起上泵杆3时顶压在锁紧盖6底部而防止上泵杆3和弹簧脱出，从而形成一个可以独立存储和运输的泵芯，使得泵芯能够作为一个标准组件，以便在后续生产组装过程中能够根据需要匹配不同按头和锁瓶盖，满足不同客户和使用场合的需求，增加使用的灵活性，降低产品开发和制造成本。
另外，输送料体的通道位于上泵杆3内部，而弹簧7位于上泵杆3外侧，能够避免弹簧7和料体接触，能够避免料体被腐蚀、污染，也能避免金属性的弹簧锈蚀。
所述按头2包括内筒21和外筒22，所述内筒21与上泵杆3连接并能在锁紧部62内上下活动，所述外筒22套设在锁紧部62外侧，所述上腔室11内壁和锁紧部62之间留有供外筒22上下滑动的间隙，所述内筒21和外筒22之间设有导向板23，所述锁紧部62上设有供导向板23上下活动的导向槽621，所述锁紧部62上端设有在按头2弹起时供导向板23旋转卡入而限制导向板23向下运动的锁定台阶622，所述锁定台阶622上设有防止导向板23自行脱出锁定台阶622落入导向槽621中的锁定凸台623，所述锁定台阶622位于锁定凸台623的另一侧设有用于阻挡导向板23旋转的挡板624，所述锁定台阶622、锁定凸台623、挡板624和导向板23组成锁定装置将按头2锁定在锁紧盖6上，锁定装置设置在锁紧盖6上端和按头下端，结构简单，对应的零部件易于制造，降低成本。
所述锁定台阶622和导向槽621之间设有导向角625，所述活塞4设有在按头2弹起时能够顶压在支撑部64底部的内套41，当按头2弹起并旋转，导向板23沿导向角625滑入锁定台阶622上，内套41被压紧在支撑部64的底部上，使得自锁后，按头、上泵杆、活塞和锁紧盖能够紧紧地锁定在一起，提高锁定状态的稳定性。
所述泵体1其上腔室11的内径大于下腔室12的内径，所述上腔室11的下部设有向内凸出的环形凸台14，所述上腔室11的底部位于凸台14的下方设有侧向内凹的环形扣槽13，所述凸台14和扣槽13上下相接形成“S”形的扣接结构，所述卡接部61的外侧设有扣入在扣槽13中扣合环611，以及供凸台14卡入的凹环612，所述泵体1中位于凸台14的上方沿圆周方向间隔设置有多个与锁紧盖6干涉配合的筋条15，结构简单，固定牢靠，可防止锁紧盖6和泵体1两者之间相互转动及松脱。
所述上泵杆3中空且其下端封闭，所述上泵杆3的下部设有与其内部相连通的侧口32，所述上泵杆3上位于侧口32的上下方设有上限位台33和下限位台34，所述活塞4上设有能在上限位台33和下限位台34之间上下活动的活动套42，所述活动套42的下端上设有能够与下限位台34相配 合实现密封连接的密封环43，当下限位台34向上压在密封环43上时切断所述上泵杆3内部与下腔室12的连通；当上泵杆3向下运动，所述下限位台34向下脱离密封环43，并使所述上泵杆3通过侧口32与下腔室12相连通，且上限位台33在下移一段距离后能够压在活动套42的上端推动活塞4一起下移，当上限位台33压在活动套42的上端时，二者之间密封连接，所述活塞4的上端设有向内凸出并与上泵杆3的外侧壁过盈配合而密封连接的凸环44，结构简单，省去下泵杆结构，构件少，组装方便，降低成本。

Claims (7)

  1. 一种外置弹簧自锁式按压泵结构，其特征在于：包括泵体(1)、按头(2)、上泵杆(3)、活塞(4)、锁瓶盖(5)和锁紧盖(6)，所述泵体(1)包括阶梯结构的上腔室(11)和下腔室(12)，所述锁紧盖(6)包括卡接固定在上腔室(11)的下部的卡接部(61)，以及向上伸入在上腔室(11)中的锁紧部(62)和向下伸入在下腔室(12)中的限位部(63)，所述锁紧盖(6)中空且上泵杆(3)位于锁紧盖(6)内侧，所述上泵杆(3)上端穿过锁紧盖(6)与按头(2)连接，下端穿过锁紧盖(6)与活塞(4)连接，所述上泵杆(3)外侧套设有弹簧(7)，所述弹簧(7)设在锁紧盖(6)内，所述锁紧盖(6)下部设有向内凸出用以支撑弹簧(7)的支撑部(64)，所述上泵杆(3)上部外侧面上设有供弹簧(7)向上顶压的顶压凸台(31)，所述泵体(1)内位于下腔室(12)的下端设有供液体进入的单向阀(8)，所述锁紧盖(6)和按头(2)之间设有能将按头(2)锁定使其无法按下的锁定装置。
  2. 根据权利要求1所述的一种外置弹簧自锁式按压泵结构，其特征在于：所述按头(2)包括内筒(21)和外筒(22)，所述内筒(21)与上泵杆(3)连接并能在锁紧部(62)内上下活动，所述外筒(22)套设在锁紧部(62)外侧，所述上腔室(11)内壁和锁紧部(62)之间留有供外筒(22)上下滑动的间隙，所述内筒(21)和外筒(22)之间设有导向板(23)，所述锁紧部(62)上设有供导向板(23)上下活动的导向槽(621)，所述锁紧部(62)上端设有在按头(2)弹起时供导向板(23)旋转卡入而限制导向板(23)向下运动的锁定台阶(622)，所述锁定台阶(622)上设有防止导向板(23)自行脱出锁定台阶(622)落入导向槽(621)中的锁定凸台(623)，所述锁定台阶(622)位于锁定凸台(623)的另一侧设有用于阻挡导向板(23)旋转的挡板(624)，所述锁定台阶(622)、锁定凸台(623)、挡板(624)和导向板(23)组成锁定装置将按头(2)锁定在锁紧盖(6)上。
  3. 根据权利要求2所述的一种外置弹簧自锁式按压泵结构，其特征在于：所述锁定台阶(622)和导向槽(621)之间设有导向角(625)，所述活塞(4)设有在按头(2)弹起时能够顶压在支撑部(64)底部的内套(41)， 当按头(2)弹起并旋转，导向板(23)沿导向角(625)滑入锁定台阶(622)上，内套(41)被压紧在支撑部(64)的底部上。
  4. 根据权利要求1所述的一种外置弹簧自锁式按压泵结构，其特征在于：所述泵体(1)其上腔室(11)的内径大于下腔室(12)的内径，所述上腔室(11)的下部设有向内凸出的环形凸台(14)，所述上腔室(11)的底部位于凸台(14)的下方设有侧向内凹的环形扣槽(13)，所述凸台(14)和扣槽(13)上下相接形成“S”形的扣接结构，所述卡接部(61)的外侧设有扣入在扣槽(13)中扣合环(611)，以及供凸台(14)卡入的凹环(612)，所述泵体(1)中位于凸台(14)的上方沿圆周方向间隔设置有多个与锁紧盖(6)干涉配合的筋条(15)，用于防止锁紧盖(6)和泵体(1)两者之间相互转动及松脱。
  5. 根据权利要求1所述的一种外置弹簧自锁式按压泵结构，其特征在于：所述上泵杆(3)中空且其下端封闭，所述上泵杆(3)的下部设有与其内部相连通的侧口(32)，所述上泵杆(3)上位于侧口(32)的上下方设有上限位台(33)和下限位台(34)，所述活塞(4)上设有能在上限位台(33)和下限位台(34)之间上下活动的活动套(42)，所述活动套(42)的下端上设有能够与下限位台(34)相配合实现密封连接的密封环(43)，当下限位台(34)向上压在密封环(43)上时切断所述上泵杆(3)内部与下腔室(12)的连通；当上泵杆(3)向下运动，所述下限位台(34)向下脱离密封环(43)，并使所述上泵杆(3)通过侧口(32)与下腔室(12)相连通，且上限位台(33)在下移一段距离后能够压在活动套(42)的上端推动活塞(4)一起下移，当上限位台(33)压在活动套(42)的上端时，二者之间密封连接，所述活塞(4)的上端设有向内凸出并与上泵杆(3)的外侧壁过盈配合而密封连接的凸环(44)。
  6. 根据权利要求1所述的一种外置弹簧自锁式按压泵结构，其特征在于：所述单向阀(8)包括球珠(81)。
  7. 根据权利要求1所述的一种外置弹簧自锁式按压泵结构，其特征在于：所述锁瓶盖(5)内侧设有密封垫片(9)，所述泵体(1)下端连接有吸管(10)。
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