WO2013143431A1 - 一种冲洗机构 - Google Patents

一种冲洗机构 Download PDF

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Publication number
WO2013143431A1
WO2013143431A1 PCT/CN2013/073137 CN2013073137W WO2013143431A1 WO 2013143431 A1 WO2013143431 A1 WO 2013143431A1 CN 2013073137 W CN2013073137 W CN 2013073137W WO 2013143431 A1 WO2013143431 A1 WO 2013143431A1
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WO
WIPO (PCT)
Prior art keywords
piston
valve sleeve
flushing mechanism
small
large valve
Prior art date
Application number
PCT/CN2013/073137
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English (en)
French (fr)
Inventor
李飞宇
江长发
Original Assignee
Li Feiyu
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN2012201316718U external-priority patent/CN202509593U/zh
Priority claimed from CN201210091790.XA external-priority patent/CN103362189B/zh
Application filed by Li Feiyu filed Critical Li Feiyu
Publication of WO2013143431A1 publication Critical patent/WO2013143431A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D3/00—Flushing devices operated by pressure of the water supply system flushing valves not connected to the water-supply main, also if air is blown in the water seal for a quick flushing
    • E03D3/10—Flushing devices with pressure-operated reservoir, e.g. air chamber

Definitions

  • the present invention relates to a flushing mechanism for flushing dirt and/or sewage, and more particularly to a flushing mechanism suitable for flushing sanitary equipment such as a flush toilet.
  • Chinese patent application CN200810091185.6 discloses a flushing mechanism, which is mainly characterized in that the second piston sealing assembly has a large sealing valve piece and a small sealing valve piece, the bottom of the second piston and the lower end portion of the casing define an outer lower chamber and an inner lower chamber.
  • the second piston loading spring cooperates to move the second piston upward, thereby opening the drain.
  • the structure of the second piston seal is not stable enough at the end of the drainage, which affects the function of the product.
  • a flushing mechanism disclosed in Chinese Patent Application No. CN201010252463.9 characterized in that it has a first piston and a second piston sealing assembly, the second piston sealing assembly comprising a large sealing ring at the outer periphery of the bottom portion thereof and a small seal ring of the central portion, the lower end of the first piston has an annular protrusion, the annular protrusion being capable of contacting a large seal ring of the second piston seal assembly, the ring being closed when the first piston slides downward
  • the protrusion can pre-compress and deform the large seal ring of the second piston seal assembly, and the large seal ring of the second piston seal assembly is sealed by the small seal ring of the second piston seal assembly due to the pre-compression bending deformation To achieve the functionality of this component.
  • the disadvantage of this structure is that the relative distance between the large sealing ring and the small sealing ring of the second piston sealing assembly is very strict, and the relative tolerance ranges such as relative hardness and elastic force of the two sealing rings are very high, resulting in the realization process.
  • the sealing order of the second piston sealing assembly is deviated sequentially, and the condition of unstable function is more likely to occur.
  • the present invention provides a flushing mechanism.
  • the flushing mechanism achieves relative movement of the large seal ring and the second piston (or a small seal ring on the second piston) during drainage.
  • the second piston continues to move down to contact the bottom of the tank to prepare for smooth drainage and to stabilize the drainage function.
  • the technical solution adopted by the present invention is to provide a flushing mechanism, comprising: a box body (1) having a box wall (1-1) and connected to the box wall (1-1) a bottom of the box (1-2), a water outlet for connecting the flushing line is opened at the bottom of the box (1-2); a first piston (3), the first piston (3) can be along the box in the box (1)
  • the wall (1-1) is sealed upward and downward, and the first piston (3) divides the inner chamber of the casing (1) into an upper chamber (1-3) and a lower chamber (1-4); a piston loading spring (4), the first piston loading spring (4) applies an elastic force to the first piston (3) to drive the first piston (3) to move downward;
  • a second piston (5) the The second piston (5) is slidable up and down in the casing (1), the second piston (5) is located between the first piston (3) and the bottom of the tank (1-2); a second piston loading spring (6)
  • the second piston loading spring (6) is for applying an elastic force to the second piston (5) to drive the second piston (5) to
  • the large valve sleeve (8) is disposed around the bottom of the second piston (5).
  • the annular small chamber (1-5) and the outlet The nozzle is connected, and the second piston (5) continues to move downward under the action of water pressure to seal the second piston (5) from the bottom of the tank (1-2).
  • the bottom of the second piston (5) is provided with a small sealing ring (9-1) for sealing against the bottom (1-2) of the tank.
  • the inner cavity of the second piston (5) is provided with a small valve sleeve (9) separated from the second piston (5), and the bottom side wall of the small valve sleeve (9) is provided.
  • a connecting member is provided between the second piston (5) and the large valve sleeve (8); when the second piston (5) moves upward, the second piston (5) ) Linkage with the large valve sleeve (8) through the connecting piece.
  • the linkage device includes a first hook (8-2) disposed on an inner wall of the large valve sleeve (8), and the second piston (5) is limited to the first hook (8-2) inside.
  • the linkage device includes a first active element (5-6) disposed on the second piston (5) and a second active element disposed on the large valve sleeve (8) (8-6), one of the first acting element (5-6) and the second acting element (8-6) is a magnetic material, and the other is a magnetic material or a metallic material.
  • the first active element and the second active element are attracted to effect linkage of the second piston (5) with the large valve sleeve (8).
  • the connecting member is a spring (8-7, 8-8), one end of the spring (8-7, 8-8) is fixed to the second piston (5), and the other end is fixed to the large The valve sleeve (8); the second piston (5) is linked with the large valve sleeve (8) by springs (8-7, 8-8).
  • the interlocking device includes a third hook (5-1) provided on the second piston (5), the large valve sleeve (8) and the third hook (5-1) The fit and the limit are located inside or outside the third hook (5-1).
  • a large valve sleeve is arranged on the outer peripheral wall of the second piston, and a large sealing ring is arranged on the large valve sleeve; when the first piston moves downward, and the large sealing ring and the bottom of the box are sealed, the annular small chamber is still connected with the water outlet, and the ring The water in the small chamber continues to be discharged through the water outlet; the second piston is further moved downward by the water pressure to achieve sealing with the bottom of the tank.
  • the degree of physical relationship between the large sealing ring and other sealing components (such as the second piston or small sealing ring) is reduced, and the tolerance range of the hardness and elastic force of the large sealing ring and the small sealing ring is greatly reduced. , thereby reducing the manufacturing and inspection costs of the parts and improving the stability of the mechanism.
  • a linkage device (such as a hook and a magnetic element) is disposed between the second piston and the large valve sleeve. , compression springs and tension springs, etc.), further enhancing the stability of the washing mechanism.
  • Figure 1 is a schematic cross-sectional view showing the flushing mechanism of the present invention in an initial state
  • Figure 2 is an enlarged schematic view of a portion A shown in Figure 1;
  • Figure 3 is an enlarged schematic view of a portion B shown in Figure 1;
  • Figure 4 is a schematic view of the flushing mechanism of the present invention in a state of water inlet and end;
  • Figure 5 is a schematic view showing the state when the control valve of the present invention is lifted
  • Figure 6 is a schematic view showing the flushing mechanism of the present invention in a drain state
  • Figure 7 is a schematic view showing a first embodiment of the flushing mechanism of the present invention.
  • Figure 8 is an enlarged schematic view of a portion C shown in Figure 7;
  • Figure 9 is a schematic view showing a second embodiment of the flushing mechanism of the present invention.
  • Figure 10 is an enlarged schematic view of a portion D shown in Figure 9;
  • Figure 11 is a schematic view showing a third embodiment of the rinsing mechanism of the present invention.
  • Figure 12 is a schematic view showing a third embodiment of the rinsing mechanism of the present invention provided with a connector.
  • the flushing mechanism of the present invention comprises a casing 1, a guide rod 2, a first piston 3, and a first piston loading spring 4; wherein the casing 1 has a box wall 1-1 connected to each other and The bottom 1-2, the box wall 1-1 is integrally formed or integrated with the bottom 1-2, and the box wall 1-1 defines a cylindrical structure surrounding an axis, preferably the axis is the box 1 a center line, a water outlet for connecting a flushing pipe (not shown) is provided around the axis 1-2; the guide rod 2 is axially fixed in the casing 1 along the axis.
  • the guide rod 2 comprises a screw and a sleeve, and the screw is disposed in the box body 1 in the longitudinal direction coincident with the center line of the box body 1.
  • the sleeve defines an axial screw hole into which the screw can be screwed; the first piston 3 can seal sliding on the guide rod 2 in the axial direction, and the first piston 3 divides the inner chamber of the casing 1 into an upper chamber 1-3 and a lower chamber 1-4, a lower chamber 1-4 contact the bottom 1-2 of the tank, and the upper chamber 1-3 is opposite to the lower chamber 1-4.
  • the first piston 3 is formed by connecting the upper part of the piston and the bottom of the piston.
  • the upper part of the piston extends upward in the direction of the axis and has a hollow cylindrical structure.
  • the upper part of the piston is mounted on the outer wall of the guide rod 2.
  • the outer diameter of the bottom of the piston is slightly smaller than the wall of the box.
  • the inner diameter of -1, the bottom of the piston can slide upward and downward along the inner wall of the tank wall 1-1; the first piston loading spring 4 is mounted around the guide rod 2, and an elastic force is applied to the first piston 3 to drive the first piston 3 toward Move down to reduce the volume of the lower chamber 1-4 and enlarge the volume of the upper chamber 1-3.
  • the flushing mechanism of the present invention further includes a second piston 5, a second piston loading spring 6, and a control valve 7; the second piston 5 can be sealingly slid on the guide rod 2 in the axial direction, the second
  • the piston 5 is located between the first piston 3 and the bottom 1-2 of the tank.
  • the second piston 5 also includes an upper portion of the piston and a bottom of the piston.
  • the upper portion of the piston has a hollow cylindrical structure and is sleeved on the outer peripheral wall of the guide rod 2.
  • the bottom of the piston is along the axis.
  • the direction is sealed and slid on the guide rod 2;
  • the second piston loading spring 6 is mounted around the guide rod 2, and is used to apply an elastic force to the second piston 5 to drive the second piston 5 to move upward;
  • the control valve 7 is used In the direction of controlling the water inlet of the inlet pipe.
  • a large valve sleeve 8 for sealing with the bottom 1-2 of the tank bottom 1-2 is arranged around the bottom of the second piston 5 , and the second piston 5 and the large valve sleeve 8 are mutually movable and sealed, and the large valve sleeve
  • the bottom of the 8 is provided with a large sealing ring 8-1, and a large small chamber 1-5 is arranged between the large valve sleeve 8, the large sealing ring 8-1, the second piston 5 and the bottom 1-2.
  • a first sealing member 5-3 is disposed at a contact portion between the bottom portion of the bottom portion of the second piston 5 and the large valve sleeve 8, and a second sealing member is disposed at a contact portion of the bottom portion of the second piston 5 with the small valve sleeve 9. 5-4;
  • the control valve 7 connects the annular small chamber 1-5 with the lower chamber 1-4 or a higher pressure water source, and the second piston loading spring 6 Under the action of the spring force and the water pressure, the second piston moves upward to realize the opening drainage.
  • the first piston 3 moves downward and the first piston 3 comes into contact with the large valve sleeve 8.
  • the second piston 5 is moved to the upper stop position relative to the large valve sleeve 8 by the action of the second piston loading spring 6.
  • the first piston 3 continues to descend, and the large sealing ring 8-1 is sealed with the bottom 1-2 of the tank.
  • the second piston 5 has not yet been sealed with the bottom 1-1 of the tank, and the annular small chamber 1-5 is connected with the water outlet.
  • the water in the small chambers 1-5 can be smoothly discharged through the water outlet.
  • the second piston 5 is continuously moved downward by the water pressure to seal the second piston 5 from the tank bottom 1-2.
  • the second piston 5 Since the sealing performance requirement of the second piston 5 is lower than that of the large sealing ring 8-1, the second piston 5 is directly sealed with the tank bottom 1-2, and the water inlet of the flushing mechanism according to the present invention can also be realized. drain.
  • the bottom side wall of the second piston 5 is provided with a small seal 9-1 for sealing against the tank bottom 1-2.
  • the inner chamber of the second piston 5 is provided with a small valve sleeve 9 which is separate from the second piston 5, that is to say a small valve sleeve 9 is provided separately on the inner side of the second piston 5.
  • a small seal 9-1 is provided on the bottom side wall of the small valve sleeve 9 for sealing against the bottom 1-2.
  • the small valve sleeve 9 is tightly coupled to the second piston 5.
  • the second piston 5 drives the small valve sleeve 9 to move downward, thereby realizing the gap between the small valve sleeve 9 and the second piston 5.
  • Linkage In order to achieve the sealing of the small valve sleeve 9 and the inner wall of the second piston 5, a third sealing member 5-5 is provided between the small valve sleeve 9 and the second piston 5.
  • the small valve sleeve 9 and the second piston 5 can be provided with an interference fit or a snap fit to achieve sealing and fastening.
  • the flushing mechanism is shown in an initial state.
  • the first piston 3 is located at the bottom 1-2 of the casing 1 due to its own gravity and the elastic force of the first piston loading spring 4, and the second piston 5 is biased upward by the second piston loading spring 6.
  • the second piston 5 is also located at the bottom 1-2 of the casing 1, and the first piston 3 is located above the second piston 5.
  • the annular small chamber 1-5 and the lower chamber 1-4 are sealed and sealed by the large sealing ring 8-1, the annular small chamber 1-5 is connected with the water outlet, and the internal pressure of the annular small chamber 1-5 is equal to the outside air. Air pressure.
  • FIG. 4 a schematic view of the flushing mechanism in the state of entering the water and ending is shown.
  • a portion of the water flow enters the lower chamber 1-4 of the tank 1 along the inlet pipe in the a direction shown in the drawing, and the other portion of the water flows into the trap of the toilet along the water supply pipe in the b direction shown in the drawing.
  • the first piston 3 has moved upward to reach the highest position, and the first piston 3 contacts the water level element 10 located on the tank 1, at which time the tank 1 stores water. Finished.
  • the second piston 5 continues to move downward by a large water pressure (the water pressure is greater than the upward elastic force of the second piston loading spring 6), and the small seal 9-1 makes the annular small chamber 1-5 and the lower The nozzle is sealed.
  • FIG. 5 a schematic view of the state when the control valve 7 is opened is shown.
  • the control valve 7 is opened, at this time, the water storage in the lower chamber 1-4 enters the annular small chamber 1-5 in the c direction shown in the drawing, so that the lower chamber 1-4 and the annular small chamber 1 - 5 achieved connectivity.
  • the flushing mechanism is shown in a drained state.
  • the second piston 5 receives the combined force of the water pressure and the upward movement of the second piston loading spring 6, the second piston 5 moves upward, and the large valve sleeve 8 interlocks with the second piston 5, and the lower chamber 1-4
  • the water is drained.
  • the first piston loading spring 4 pushes the first piston 3 downward.
  • the first piston 3 continues to move downward, and the first piston 3 comes into contact with the large valve sleeve 8 first.
  • the second piston 5 moves relative to the large valve sleeve 8 and is in the upper dead position.
  • the first piston 3 continues to descend, and the large sealing ring 8-1 and the bottom 1-2 of the tank are sealed, and at this time, the second piston 5 has not been sealed with the bottom 1-1 of the tank, and the water in the annular small chamber 1-5 can be smoothly
  • the water outlet is discharged to avoid the large water pressure of the annular small chamber 1-5 due to the water stored in the annular small chamber 1-5, thereby destroying the sealing performance of the large sealing ring 8-1 and the small sealing ring 9-1.
  • the linkage between the bottom of the second piston 5 and the large valve sleeve 8 is achieved by the friction between the two, as well as the interaction of water pressure, elastic force, and the like.
  • an interlocking device is arranged between the second piston 5 and the large valve sleeve 8; when the second piston 5 moves upward, the second piston 5 passes The connecting member is interlocked with the large valve sleeve 8.
  • FIG. 7 a first embodiment of a linkage is shown.
  • the linkage device includes an annular first hook 8-2 disposed on the inner wall of the large valve sleeve 8, and the second piston 5 is located inside the first hook 8-2.
  • the flushing mechanism drains, the second piston 5 is moved upward by the combined force of the water pressure and the second piston loading spring, and the large valve sleeve 8 is moved upward by the action of the first hook 8-2, followed by the second piston 5, the lower cavity
  • the water in chambers 1-4 is drained.
  • the first piston loading spring 4 pushes the first piston 3 downward.
  • the first piston 3 continues to move downward, and the first piston 3 comes into contact with the large valve sleeve 8 first.
  • the second piston loading spring 6 Actuated by the second piston loading spring 6, the second piston 5 moves upward relative to the large valve sleeve 8 and is in the upper stop position.
  • the first piston 3 continues to descend, and the large seal 8-1 and the bottom 1-2 are preferentially sealed.
  • the second piston 5 has not been sealed with the bottom 1-1 by the action of the second piston loading spring 6, and the water in the annular small chamber 1-5 can smoothly enter the water outlet to avoid the small chamber due to the ring.
  • the water stored in 1-5 causes the annular small chamber 1-5 to have a large water pressure to break the sealing performance of the large sealing ring 8-1 and the small sealing ring 9-1, and the storage of water as much as possible is achieved.
  • the second piston 5 continues to move downward by the water pressure to achieve the sealing of the second piston 5 and the bottom of the tank (1-2), thereby enhancing the stability of the flushing mechanism.
  • the linkage device comprises a first active element 5-6 disposed on the second piston 5 and a second active element 8-6 disposed on the large valve sleeve 8, the first active element 5-6 and the second active element 8 -6 phase suction to achieve linkage of the second piston 5 with the large valve sleeve 8.
  • the first active element 5-6 and the second active element 8-6 may be two elements of a magnetic material that are mutually attracted, or one of which is a magnetic material and the other metal. element.
  • the second piston 5 When the flushing mechanism drains, the second piston 5 is moved upward by the combined force of the water pressure and the second piston loading spring, and the large valve sleeve 8 is moved by the second piston 5 by the magnetic attraction force, and the lower chamber 1-4 is moved. The water is drained. As the water in the lower chamber 1-4 is discharged, the first piston loading spring 4 pushes the first piston 3 downward. The first piston 3 continues to move downward, and the first piston 3 comes into contact with the large valve sleeve 8 first. Actuated by the second piston loading spring 6, the second piston 5 moves upward relative to the large valve sleeve 8 and is in the upper stop position. The first piston 3 continues to descend, and the large seal 8-1 and the bottom 1-2 are preferentially sealed.
  • the second piston 5 is subjected to the action of the second piston loading spring 6 to overcome the magnetic attraction force so that the sealing with the bottom 1-1 has not yet been achieved, and the water in the annular small chamber 1-5 can smoothly enter the water outlet to avoid the ring.
  • Water is stored in the small chambers 1-5 to cause the annular small chambers 1-5 to have a large water pressure to break the sealing performance of the large sealing ring 8-1 and the small sealing ring 9-1, and to achieve as much storage as possible. water.
  • the second piston 5 continues to move downward by the water pressure to achieve the sealing of the second piston 5 and the bottom of the tank (1-2), thereby enhancing the stability of the flushing mechanism.
  • a third embodiment of the interlocking device is shown.
  • the connecting device is a tension spring 8-7, one end of the tension spring 8-7 is fixed to the lower end surface of the second piston 5, and the other end of the tension spring 8-7 is fixed to the upper end surface of the large valve sleeve 8;
  • the second piston 5 is moved upward by the tension spring 8-7 to achieve linkage with the large valve sleeve 8.
  • the linkage device is a compression spring 8-8, and the compression spring 8-8 One end of the pressure spring 8-8 is fixed to the lower end surface of the large valve sleeve 8, and the second piston 5 is moved upward through the compression spring 8-8 to realize the large valve sleeve 8. Linkage.
  • one end of the spring 8-7 or 8-8 is fixed to the second piston 5, and the other end is fixed to the large valve sleeve 8; through the spring 8-7 Or 8-8 realizes that the second piston 5 is interlocked with the large valve sleeve 8.
  • the linkage device includes a third hook 5-1 disposed on the second piston 5, and the large valve sleeve 8 cooperates with the third hook 5-1 and is located inside the third hook (5-1) or Outside.
  • the first hook 8-2 and the third hook 5-1 may be made of plastic or organic materials, and thus have a certain elastic deformation. Therefore, in all embodiments of the linkage device, the linkage between the second piston 5 and the large valve sleeve 8 is flexibly connected, thereby effectively protecting the second piston 5 and the large valve sleeve 8, extending the relationship between the two. The service life increases the stability of the mechanism.
  • the flushing mechanism of the invention reduces the degree of physical relationship between the large sealing ring and other sealing components (such as the second piston or the small sealing ring), and the tolerance range of the hardness and the elastic force of the large sealing ring and the small sealing ring Greatly reduced, which reduces the cost of manufacturing and inspection of parts and improves the stability of the mechanism.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sliding Valves (AREA)

Abstract

一种冲洗机构，包括箱体（1）、导杆（2）、第一活塞（3）、第一活塞加载弹簧（4）、第二活塞（5）、第二活塞加载弹簧（6）、控制阀（7），第二活塞相互活动密封地设有用于与箱底进行密封的大阀套（8），大阀套设有大密封圈（8-1）；大阀套、大密封圈、第二活塞及箱底之间有一环形小腔室（1-5）。采用上述方案，在排水过程中，减少了大密封圈与小密封圈的物性关联程度，对大密封圈与小密封圈的硬度和弹力的公差范围要求大大降低，从而降低了零件的制造和检验成本。

Description

一种冲洗机构 技术领域
本发明涉及一种用于冲洗污物和/或污水的冲洗机构，特别涉及一种适用于冲洗如抽水坐便器之类的卫浴设备的冲洗机构。
背景技术
中国专利申请CN200810091185.6公开一种冲洗机构，主要特征在于第二活塞密封组件具有大密封阀片和小密封阀片、第二活塞底部及箱体下端部限定出外下腔室和内下腔室，在排水阶段与第二活塞加载弹簧协同作用使第二活塞向上运动，从而开启排水口。该结构在排水结束时第二活塞密封不够稳定，影响产品功能。
中国专利申请CN201010252463.9公开的一种冲洗机构，主要特征在于具有第一活塞和第二活塞密封组件，所述第二活塞密封组件包括处在其底部的外侧周边的大密封圈和处在其中心部分的小密封圈，所述第一活塞的下端具有环形突起，所述环形突起能够接触所述第二活塞密封组件的大密封圈，在所述第一活塞向下滑动时，所述环形突起能够使所述第二活塞密封组件的大密封圈预压弯曲变形，所述第二活塞密封组件的大密封圈因预压弯曲变形优先于所述第二活塞密封组件的小密封圈实现密封，从而实现该组件的功能。该结构的缺陷在于，第二活塞密封组件的大密封圈和小密封圈的相对距离要求很严格，对该两种密封圈的相对硬度和弹力等相对公差范围要求很高，导致在实现过程中，第二活塞密封组件的密封先后顺序出现偏差，较容易出现功能不稳定的状况。
发明内容
为解决现有技术中存在的技术问题，本发明提供了一种冲洗机构。该冲洗机构在排水过程中，实现了大密封圈与第二活塞(或是第二活塞上的小密封圈)的相对移动。当大密封圈实现密封时，第二活塞继续往下移动才能接触箱底从而为实现顺利排水做好准备，使排水功能稳定。
本发明所采用的技术方案是：提供一种冲洗机构，包括，一箱体(1)，该箱体(1)具有箱壁(1-1)及与该箱壁(1-1)连接的箱底(1-2)，在箱底(1-2)开设用于连接冲水管路的出水口；一第一活塞(3)，该第一活塞(3)在箱体(1)内可沿箱壁(1-1)上下密封滑动，该第一活塞(3)将箱体(1)的内腔室分隔成上腔室(1-3)和下腔室(1-4))；一第一活塞加载弹簧(4)，该第一活塞加载弹簧(4)向第一活塞(3)施加弹性力以驱动第一活塞(3)趋于向下移动；一第二活塞(5)，该第二活塞(5)在箱体(1)内可上下滑动，该第二活塞(5)位于第一活塞(3)与箱底(1-2)之间；一第二活塞加载弹簧(6)，该第二活塞加载弹簧(6)用于对第二活塞(5)施加弹性力以驱动第二活塞(5)趋于向上移动；第二活塞(5)相互活动密封地设有用于与箱底(1-2)进行密封的大阀套(8)，大阀套(8)设有大密封圈(8-1)；大阀套(8)、大密封圈(8-1)、第二活塞(5)及箱底(1-2)之间有一环形小腔室(1-5)。
作为本发明的优选方案，所述大阀套(8)环绕设置于第二活塞(5)底部。
作为本发明的优选方案，在第一活塞(3)往下移动时，且大密封圈(8-1)与箱底(1-2)实现密封后，环形小腔室(1-5)与出水口连通，第二活塞(5)在水压作用下继续往下移动并实现第二活塞(5)与箱底(1-2)密封。
作为本发明的优选方案，第二活塞(5)的底部设有用于与箱底(1-2)密封的小密封圈(9-1)。
作为本发明的优选方案，所述第二活塞(5)的内腔设有与第二活塞(5)分体的小阀套(9)，该小阀套(9)的底部侧壁设有用于与箱底(1-2)密封的小密封圈(9-1)。
作为本发明的优选方案，在所述第二活塞(5)与所述大阀套(8)之间设有连接件；当第二活塞(5)向上移动时，所述第二活塞(5)通过该连接件与大阀套(8)实现联动。
作为本发明的优选方案，所述连动装置包括设于所述大阀套(8)内壁的第一卡钩(8-2)，所述第二活塞(5)限位于该第一卡钩(8-2)内侧。
作为本发明的优选方案，所述连动装置包括设置于所述第二活塞(5)上的第一作用元件(5-6)、及设置于大阀套(8)上的第二作用元件(8-6)，第一作用元件(5-6)与第二作用元件(8-6)之一为磁性材料，另一个为磁性材料或者金属材料。第一作用元件和第二作用元件相吸以实现第二活塞(5)与大阀套(8)联动。
作为本发明的优选方案，所述连接件为弹簧(8-7、8-8)，该弹簧(8-7、8-8)的一端固定于第二活塞(5)，另一端固定于大阀套(8)；通过弹簧(8-7、8-8)实现第二活塞(5)与大阀套(8)联动。
作为本发明的优选方案，连动装置包括设于所述第二活塞（5）的第三卡钩（5-1），所述大阀套(8)与第三卡钩（5-1）配合并限位于该第三卡钩(5-1)内侧或者外侧。
本发明的技术方案相对于现有技术，取得的有益效果是：
(1)本发明所述的冲洗机构, 第二活塞外周壁上设有大阀套，大阀套上设有大密封圈；在第一活塞往下移动，大密封圈与箱底实现密封时，环形小腔室仍与出水口连通，环形小腔室中的水继续通过出水口排出；第二活塞受水压作用继续往下移动才实现与箱底密封。在这一过程中，减少了大密封圈与其他密封组件(如第二活塞或小密封圈)在物性上的关联程度，对大密封圈与小密封圈的硬度和弹力的公差范围要求大大降低，从而降低了零件的制造和检验成本，提高了机构的稳定性能。
(2)在本发明所述的冲洗机构排水时，为了实现第二活塞与大阀套之间的联动，在第二活塞与大阀套之间设有连动装置(如卡钩、磁力元件、压簧及拉簧等)，进一步增强了冲洗机构的稳定性能。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本发明的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1 是本发明所述的冲洗机构处于初始状态下的剖面示意图；
图2是图1所示的A部分放大示意图；
图3是图1所示的B部分放大示意图；
图4是本发明所述的冲洗机构处于进水并结束状态下的示意图；
图5是本发明所述的控制阀被提起时的状态示意图；
图6是本发明所述的冲洗机构处于排水状态示意图；
图7是本发明所述的冲洗机构设有连接件的第一实施例示意图；
图8是图7所示的C部分放大示意图；
图9是本发明所述的冲洗机构设有连接件的第二实施例示意图；
图10是图9所示的D部分放大示意图；
图11本发明所述的冲洗机构设有连接件的第三实施例示意图；
图12本发明所述的冲洗机构设有连接件的第三实施例示意图。
附图标号说明：
1 箱体 7 控制阀
1-1 箱壁 8大阀套
1-2 箱底 8-1 大密封圈
1-3 上腔室 8-2 第一卡钩
1-4 下腔室 8-3第二卡钩
1-5 环形小腔室 8-6 第二作用元件
2 导杆 8-7拉簧
3 第一活塞 8-8 压簧
4第一活塞加载弹簧 9小阀套
5 第二活塞 9-1小密封圈
5-1 第三卡钩 9-2凸沿
5-3 第一密封件 10 水位元件
5-4 第二密封件 5-5 第三密封件
5-6 第一作用元件
6第二活塞加载弹簧
具体实施方式
为了使本发明所要解决的技术问题、技术方案及有益效果更加清楚、明白，以下结合附图和实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本发明，并不用于限定本发明。
如图1所示，本发明所述的冲洗机构，包括箱体1、导杆2、第一活塞3、第一活塞加载弹簧4；其中，箱体1具有相互连接的箱壁1-1和箱底1-2，箱壁1-1与箱底1-2一体成型或连成一体，该箱壁1-1限定一个环绕一条轴线的柱形结构，优选该轴线为箱体1 的中心线，在箱底1-2环绕该轴线开设一用于连接冲水管路(图中未示出)的出水口；导杆2顺着所述轴线在箱体1内沿轴向固定, 导杆2包括螺杆和套管，螺杆沿纵向与箱体1的中心线重合地设置于箱体1中，套管限定一个轴向螺孔，螺杆可旋入该轴向螺孔；第一活塞3可沿所述轴线方向在导杆2上密封滑动，且该第一活塞3将箱体1的内腔室分隔成一个上腔室1-3及一个下腔室1-4，下腔室1-4接触箱底1-2，上腔室1-3则与下腔室1-4相对。第一活塞3由活塞上部与活塞底部连接而成，活塞上部沿所述轴线方向向上延伸并呈中空圆柱状结构，活塞上部安装于导杆2的外壁，活塞底部的外径略小于箱壁1-1的内径，活塞底部可沿箱壁1-1的内壁上下密封滑动；第一活塞加载弹簧4环绕导杆2安装，且向第一活塞3施加弹性力以驱动第一活塞3趋于向下移动，从而缩小下腔室1-4的容积并扩大上腔室1-3的容积。
如图1所示，本发明所述的冲洗机构还包括第二活塞5、第二活塞加载弹簧6、控制阀7；第二活塞5可沿轴线方向在导杆2上密封滑动，该第二活塞5位于第一活塞3与箱底1-2之间，第二活塞5同样包括活塞上部与活塞底部，活塞上部呈中空的圆柱形结构且套设于导杆2的外周壁，活塞底部沿轴线方向在导杆2上密封滑动；第二活塞加载弹簧6环绕所述导杆2安装，且用于对第二活塞5施加弹性力以驱动第二活塞5趋于向上移动；控制阀7则用于控制进水管路进水的方向。
如图1、图2、图3所示，环绕第二活塞5底部设有用于与箱底1-2进行密封的大阀套8，第二活塞5与大阀套8相互活动密封，大阀套8的底部设有大密封圈8-1，大阀套8、大密封圈8-1、第二活塞5及箱底1-2之间有一环形小腔室1-5。
为了保证密封性能，第二活塞5底部周边与大阀套8接触部位设有第一密封件5-3，在第二活塞5底部周边与所述小阀套9接触部位设有第二密封件5-4；当本发明所述的冲洗机构需要排水时，控制阀7将环形小腔室1-5与下腔室1-4或者更高压强的水源接通，在第二活塞加载弹簧6的弹簧力与水压的作用下，第二活塞往上移动，实现开启排水。排水过程中，第一活塞3往下移动，第一活塞3与大阀套8接触。受第二活塞加载弹簧6的作用，第二活塞5移动至相对于大阀套8的上止位。第一活塞3继续下行，大密封圈8-1与箱底1-2实现密封，而此时第二活塞5还没有实现与箱底1-1密封，环形小腔室1-5与出水口连通，小腔室1-5中的水可以顺利流经出水口排出。然后，第二活塞5受水压作用继续下移动实现第二活塞5与箱底1-2密封。
由于第二活塞5的密封性能要求比大密封圈8-1的密封性能较低，因此，第二活塞5直接与箱底1-2密封，也可以实现本发明所述的冲洗机构的进水与排水。为了加强第二活塞5与箱底1-2的密封性，第二活塞5底部侧壁设有用于与箱底1-2密封的小密封圈9-1。
作为另一方案，第二活塞5的内腔设有与第二活塞5分体的小阀套9，也即是在第二活塞5的内侧分体式地单独设置一小阀套9。小密封圈9-1设置在小阀套9的底部侧壁，用于与箱底1-2密封。
如图1、图3所示，为了实现小阀套9与第二活塞5之间的联动，小阀套9紧固联接于第二活塞5。当大阀套8实现与箱底1-2实现密封，第二活塞5继续往下移动时，第二活塞5带动小阀套9往下移动，从而实现小阀套9与第二活塞5之间的联动。为了实现小阀套9与第二活塞5内壁的密封性，小阀套9与第二活塞5之间设有第三密封件5-5。自然地，小阀套9与第二活塞5可以设成过盈配合或者卡扣配合，从而实现密封和紧固。
采用上述结构，不仅可以使箱体1的环形小腔室1-5中的水排尽，避免环形小腔室1-5内储有较大水压，破坏密封性能。同时，对大密封圈8-1与小密封圈9-1之间的硬度及弹力的相对公差要求较低，提高了功能的稳定性能，并且使本发明所述的冲洗机构使用寿命延长。
下面结合附图1至图6说明本发明所述冲洗机构的进水、排水过程。
如图1所示，示出了冲洗机构处于初始状态。在该状态下，第一活塞3由于受自身重力及第一活塞加载弹簧4的弹力作用而位于箱体1的箱底1-2，第二活塞5虽受第二活塞加载弹簧6向上的弹力，但同时受自身重力及第一活塞3对其向下的压力，第二活塞5也位于箱体1的箱底1-2，并且第一活塞3位于第二活塞5之上。另外，环形小腔室1-5与下腔室1-4被大密封圈8-1密封隔离，环形小腔室1-5与出水口连通，环形小腔室1-5内部气压等于外界空气气压。
如图4所示，示出了冲洗机构处于进水并结束状态下的示意图。一部分水流沿进水管以图中所示的a方向进入箱体1的下腔室1-4，另一部分水流沿补水管以图中所示的b方向进入座便器的存水弯。当箱体1的下腔室1-4的水位储满时，第一活塞3已向上移动达到最高位置，第一活塞3接触位于箱体1上的水位元件10，此时箱体1储水完毕。第二活塞5由于受到较大的水压作用(水压大于第二活塞加载弹簧6向上的弹力)而继续往下移动一定距离，小密封圈9-1使环形小腔室1-5与下水口密封。
如图5所示，示出了控制阀7开启时的状态示意图。控制阀7开启，此时，下腔室1-4中的储水则沿图中所示的c方向进入环形小腔室1-5，从而下腔室1-4与环形小腔室1-5实现了连通。
如图6所示，示出了冲洗机构处于排水状态。在此状态下，由于第二活塞5受到水压及第二活塞加载弹簧6向上的合力，第二活塞5向上移动，大阀套8随着第二活塞5联动，下腔室1-4内的水被排出。随着下腔室1-4中水的排出，第一活塞加载弹簧4将第一活塞3向下推动。第一活塞3继续往下移动，第一活塞3与大阀套8先接触。受第二活塞加载弹簧6的作用，第二活塞5相对于大阀套8移动并处于上止位。第一活塞3继续下行，大密封圈8-1与箱底1-2实现密封，而此时第二活塞5还没有实现与箱底1-1密封，环形小腔室1-5中的水可以顺利进入出水口排出，避免由于环形小腔室1-5中储有水而使环形小腔室1-5有大水压而破坏大密封圈8-1与小密封圈9-1的密封性能，并且实现了尽可能排尽储水，增强了冲洗机构的稳定性能。
如上所述，第二活塞5的底部与大阀套8之间实现联动是通过两者之间的摩擦力，以及水压、弹性力等的相互作用实现。为了更好地实现第二活塞5与大阀套8之间的联动，第二活塞5与大阀套8之间设有连动装置；当第二活塞5向上移动时，第二活塞5通过该连接件与大阀套8实现联动。
如图7、图8 所示，示出了连动装置的第一实施例。该连动装置包括设于大阀套8内壁的环形的第一卡钩8-2，第二活塞5限位于该第一卡钩8-2内侧。当冲洗机构排水时，第二活塞5受水压及第二活塞加载弹簧向上的合力作用向上移动，大阀套8受第一卡钩8－2的作用跟着第二活塞5向上移动，下腔室1-4内的水被排出。随着下腔室1-4中水的排出，第一活塞加载弹簧4将第一活塞3向下推动。第一活塞3继续往下移动，第一活塞3与大阀套8先接触。受第二活塞加载弹簧6的作用，第二活塞5相对于大阀套8向上移动并处于上止位。第一活塞3继续下行，大密封圈8-1与箱底1-2优先实现密封。与此同时第二活塞5由于受第二活塞加载弹簧6的作用还没有实现与箱底1-1密封，环形小腔室1-5中的水可以顺利进入出水口排出，避免由于环形小腔室1-5中储有水而使环形小腔室1-5有大水压而破坏大密封圈8-1与小密封圈9-1的密封性能，并且实现了尽可能排尽储水。在进水过程中，第二活塞5受水压作用向下继续移动，实现第二活塞5与箱底（1－2）的密封，从而增强了冲洗机构的稳定性能。
如图9、图10所示，示出了连动装置的第二实施例。该连动装置包括设置于第二活塞5上的第一作用元件5-6及设置于大阀套8上的第二作用元件8-6，第一作用元件5-6与第二作用元件8-6相吸以实现第二活塞5与大阀套8联动。第一作用元件5-6与第二作用元件8-6可以是异极相吸的两个皆带有磁性材料的元件，也可以是其中之一为带有磁性材料的元件，另一为金属元件。当冲洗机构排水时，第二活塞5受水压及第二活塞加载弹簧向上的合力作用向上移动，大阀套8受磁吸力的作用跟着第二活塞5向上移动，下腔室1-4内的水被排出。随着下腔室1-4中水的排出，第一活塞加载弹簧4将第一活塞3向下推动。第一活塞3继续往下移动，第一活塞3与大阀套8先接触。受第二活塞加载弹簧6的作用，第二活塞5相对于大阀套8向上移动并处于上止位。第一活塞3继续下行，大密封圈8-1与箱底1-2优先实现密封。与此同时第二活塞5受第二活塞加载弹簧6的作用克服磁吸力以至还没有实现与箱底1-1密封，环形小腔室1-5中的水可以顺利进入出水口排出，避免由于环形小腔室1-5中储有水而使环形小腔室1-5有大水压而破坏大密封圈8-1与小密封圈9-1的密封性能，并且实现了尽可能排尽储水。在进水过程中，第二活塞5受水压作用向下继续移动，实现第二活塞5与箱底（1－2）的密封，从而增强了冲洗机构的稳定性能。
如图11所示，示出了连动装置的第三实施例。连动装置接件为一拉簧8-7，该拉簧8-7的一端固定于第二活塞5的下端面，该拉簧8-7的另一端固定于大阀套8的上端面；第二活塞5向上移动通过拉簧8-7实现与大阀套8的联动。
如图12所示，示出了连动装置的第四实施例。连动装置为一压簧8-8，该压簧8-8 的一端固定于第二活塞5的上端面，该压簧8-8 的另一端固定于大阀套8的下端面，；第二活塞5向上移动通过压簧8-8实现与大阀套8的联动。
如前所述，无论拉簧8-7还是压簧8-8，该弹簧8-7或8-8的一端固定于第二活塞5，另一端固定于大阀套8；通过弹簧8-7或8-8实现第二活塞5与大阀套8联动。
如图2所示，示出了连动装置的第五实施例。该连动装置包括设于所述第二活塞5的第三卡钩5-1，大阀套8与第三卡钩5-1配合并限位于该第三卡钩(5-1)内侧或者外侧。
由上可知，连动装置的第一、第五实施例中，第一卡钩8-2、第三卡钩5-1可以是由塑料或有机材料制成，因此有一定的弹性变形。因此，连动装置的所有实施例中，第二活塞5与大阀套8之间的联动通过柔性连接，从而有效于保护了第二活塞5与大阀套8，延长了两者之间的使用寿命，提高了机构的稳定性能。
上述说明示出并描述了本发明的优选实施例，如前所述，应当理解本发明并非局限于本文所披露的形式，不应看作是对其他实施例的排除，而可用于各种其他组合、修改和环境，并能够在本文所述发明构想范围内，通过上述教导或相关领域的技术或知识进行改动。而本领域人员所进行的改动和变化不脱离本发明的精神和范围，则都应在本发明所附权利要求的保护范围内。
工业实用性
本发明所述的冲洗机构,减少了大密封圈与其他密封组件(如第二活塞或小密封圈)在物性上的关联程度，对大密封圈与小密封圈的硬度和弹力的公差范围要求大大降低，从而降低了零件的制造和检验成本，提高了机构的稳定性能。

Claims (10)

  1. 一种冲洗机构，包括：
    一箱体(1)，该箱体(1)具有箱壁(1-1)及与该箱壁(1-1)连接的箱底(1-2)，在箱底(1-2)开设用于连接冲水管路的出水口；
    一第一活塞(3)，该第一活塞(3)在箱体(1)内可沿箱壁(1-1)上下密封滑动，该第一活塞(3)将箱体(1)的内腔室分隔成上腔室(1-3)和下腔室(1-4))；
    一第一活塞加载弹簧(4)，该第一活塞加载弹簧(4)向第一活塞(3)施加弹性力以驱动第一活塞(3)趋于向下移动；
    一第二活塞(5)，该第二活塞(5)在箱体(1)内可上下滑动，该第二活塞(5)位于第一活塞(3)与箱底(1-2)之间；
    一第二活塞加载弹簧(6)，该第二活塞加载弹簧(6)用于对第二活塞(5)施加弹性力以驱动第二活塞(5)趋于向上移动；
    其特征在于，
    第二活塞(5)相互活动密封地设有用于与箱底(1-2)进行密封的大阀套(8)，大阀套(8)设有大密封圈(8-1)；大阀套(8)、大密封圈(8-1)、第二活塞(5)及箱底(1-2)之间有一环形小腔室(1-5)。
  2. 根据权利要求1所述的一种冲洗机构，其特征在于，所述大阀套(8)环绕设置于第二活塞(5)底部。
  3. 根据权利要求1所述的一种冲洗机构，其特征在于，在第一活塞(3)往下移动时，且大密封圈(8-1)与箱底(1-2)实现密封后，环形小腔室(1-5)与出水口连通，第二活塞(5)在水压作用下继续往下移动并实现第二活塞(5)与箱底(1-2)密封。
  4. 根据权利要求1所述的一种冲洗机构，其特征在于，第二活塞(5)的底部侧壁设有用于与箱底(1-2)密封的小密封圈(9-1)。
  5. 根据权利要求1所述的一种冲洗机构，其特征在于，所述第二活塞(5)的内腔设有与第二活塞(5)分体的小阀套(9)，该小阀套(9)的底部设有用于与箱底(1-2)密封的小密封圈(9-1)。
  6. 根据权利要求1所述的一种冲洗机构，其特征在于，在所述第二活塞(5)与所述大阀套(8)之间设有连动装置；当第二活塞(5)向上移动时，所述第二活塞(5)通过该连接件与大阀套(8)实现联动。
  7. 根据权利要求6所述的一种冲洗机构，其特征在于，所述连动装置包括设于所述大阀套(8)内壁的第一卡钩(8-2)，所述第二活塞(5)限位于该第一卡钩(8-2)内侧。
  8. 根据权利要求6所述的一种冲洗机构，其特征在于，所述连动装置包括设置于所述第二活塞(5)上的第一作用元件(5-6)、及设置于大阀套(8)上的第二作用元件(8-6)，第一作用元件(5-6)与第二作用元件(8-6)之一为磁性材料，另一个为磁性材料或者金属材料。第一作用元件和第二作用元件相吸以实现第二活塞(5)与大阀套(8)联动。
  9. 根据权利要求6所述的一种冲洗机构，其特征在于，所述连动装置为弹簧(8-7、8-8)，该弹簧(8-7、8-8)的一端固定于第二活塞(5)，另一端固定于大阀套(8)；通过弹簧(8-7、8-8)实现第二活塞(5)与大阀套(8)联动。
  10. 根据权利要求6所述的一种冲洗机构，其特征在于，所述连动装置包括设于所述第二活塞（5）的第三卡钩（5-1），所述大阀套(8)与第三卡钩（5-1）配合并限位于该第三卡钩(5-1)内侧或者外侧。
PCT/CN2013/073137 2012-03-30 2013-03-25 一种冲洗机构 WO2013143431A1 (zh)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1368214A (en) * 1972-06-27 1974-09-25 Heyer W T Flush valve
US5553333A (en) * 1993-09-30 1996-09-10 Andersson; Sven E. Pressurized water closet flushing system
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JP2003227162A (ja) * 2002-02-04 2003-08-15 Jae Mo Lee トイレ用水洗洗浄ユニット
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CN202509592U (zh) * 2012-03-30 2012-10-31 李飞宇 一种排水机构

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