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CN-122014791-A - Flow regulating device and method

CN122014791ACN 122014791 ACN122014791 ACN 122014791ACN-122014791-A

Abstract

The invention discloses a flow regulating device which comprises a passive valve seat, a main valve seat and a leaf spring, wherein the passive valve seat is fixed at one end of the main valve seat, the leaf spring comprises a fixed ring and a movable piece, the fixed ring is fixed between the passive valve seat and the main valve seat, the movable piece is connected with the fixed ring through a plurality of arc-shaped cantilevers which are uniformly distributed at intervals in the circumferential direction, the movable piece is provided with a central hole and a surface small hole, and through-flow gaps are reserved among the arc-shaped cantilevers, the fixed ring and the movable piece. The invention replaces the traditional complex structure with the leaf spring, the surface small hole stably preflows when not electrified, the central hole and the through-flow gap realize main through-flow after the electrification, the nonlinearity and hysteresis problems of the low-working condition PQ characteristic are improved, the damping precision is ensured, the defects of the traditional structure function conflict and poor universality are solved, and the adaptability, the stability and the driving comfort of the valve system are improved.

Inventors

  • LIU HAIZHEN

Assignees

  • 上海迅铂科技有限公司

Dates

Publication Date
20260512
Application Date
20260312

Claims (10)

  1. 1. A flow regulating device is characterized by comprising a passive valve seat, a main valve seat and a leaf spring; The passive valve seat is fixed at one end of the main valve seat; The leaf spring can deform along the axial direction and is used for controlling and regulating the pressure of a main cavity, and comprises a fixed ring and a movable piece concentrically arranged on the inner side of the fixed ring, wherein the fixed ring is fixed between the passive valve seat and the main valve seat; When the damping valve is not electrified, the movable piece is pressed on the passive valve seat, the central hole and the through-flow gap are closed, and fluid flows into the main valve seat through the surface small hole for preflow; When the damping valve is electrified, the movable piece breaks away from the passive valve seat against the initial pretightening force and moves along the axial direction to form a preset stroke, the central hole and the through-flow gap are opened, and fluid flows into the main valve seat through the central hole or the through-flow gap and then flows out to the external low-pressure cavity.
  2. 2. The flow regulator of claim 1, further comprising a primary preload spacer, the primary preload spacer being pressed against the passive valve seat and the primary preload spacer being positioned between the passive valve seat and the leaf spring for providing an initial preload force to the leaf spring.
  3. 3. The flow regulating device of claim 2, wherein the primary preload spacer is one or more.
  4. 4. The flow regulator of claim 1, further comprising a primary fulcrum pad that engages an end surface of the leaf spring remote from the passive valve seat for limiting a maximum deformation travel of the leaf spring.
  5. 5. The flow regulating device of claim 1, wherein the stationary ring, the movable plate, and the arcuate cantilever are integrally formed.
  6. 6. The flow regulator of claim 1, wherein a first annular engagement groove is formed in an inner sidewall of one end of the main valve seat, and the passive valve seat is fixed in the first annular engagement groove by interference or riveting.
  7. 7. A flow regulating device as claimed in claim 1 or claim 6, wherein the outer side wall of the end of the main valve seat remote from the passive valve seat is provided with a second annular engagement groove.
  8. 8. The flow regulating device of claim 1, wherein there are a plurality of said surface apertures, and a plurality of said surface apertures are circumferentially uniformly spaced.
  9. 9. The flow regulating device of claim 1, wherein a plurality of said arcuate cantilevers are evenly spaced circumferentially.
  10. 10. A flow rate regulating method, characterized in that a flow rate regulating device according to any one of claims 1-9 is used.

Description

Flow regulating device and method Technical Field The invention relates to the technical field of automobile shock absorbers, in particular to a flow adjusting device and a flow adjusting method. Background In the field of automobile shock absorbers, an electric control shock absorber has become a core technology for improving the driving comfort and the control stability of a vehicle by virtue of the dynamic regulation characteristic of damping force. The electromagnetic valve is used as a key execution part of the electric control shock absorber, and the opening of the valve port is changed in real time by receiving the electric signal, so that the damping force is accurately regulated and controlled. The main-stage passive valve system is used as a core unit for fine control of damping force, and the combined structural design of a spiral spring and a plurality of flat valve plates is commonly adopted in the prior art, but the structure has the following remarkable defects in practical application: the structure is complex, the space occupation is large, a plurality of flat valve plates with different diameters and thicknesses are required to be stacked and assembled to match specific pressure-flow (PQ) characteristics, and a special spiral spring is matched, so that the number of integral parts is numerous, the axial size is larger, the assembly difficulty and the production cost are increased, and the design requirements of miniaturization and integration of modern electromagnetic valves are difficult to adapt; under the working conditions of low current drive and low flow circulation, the opening response of the traditional multi-disc valve plate stack has obvious nonlinear characteristics and action hysteresis, so that the initial stage of a PQ curve presents irregular fluctuation, the stable transition of damping force can not be realized, and the running stability and the driving comfort of a vehicle are directly influenced; the traditional structure depends on a throttling gasket with fixed size and a valve plate pre-opening to realize the pre-flow function, but once the size of the pre-opening is determined, the pre-opening cannot be adjusted, the pre-flow effect is ensured, meanwhile, the stiffness adjustment of different damping requirements cannot be flexibly adapted, the function is single, the universality is poor, and the dynamic damping adjustment and control requirements under complex road conditions are difficult to meet. Based on this, the present invention provides a flow rate adjusting device and method to solve the above-mentioned problems. Disclosure of Invention The invention aims to provide a flow regulating device and a flow regulating method, which ensure excellent damping characteristic and control precision of an electromagnetic valve under the working conditions of low current and small flow, and reduce structural complexity and assembly difficulty. The invention provides a flow regulating device which comprises a passive valve seat, a main valve seat and a leaf spring, wherein the passive valve seat is fixed at one end of the main valve seat, the leaf spring can deform along the axial direction and is used for controlling and regulating the pressure of a main cavity, the leaf spring comprises a fixed ring and a movable piece concentrically arranged on the inner side of the fixed ring, the fixed ring is fixed between the passive valve seat and the main valve seat, the movable piece is connected with the fixed ring through a plurality of arc cantilevers which are uniformly distributed at intervals along the circumferential direction, a center hole and a surface small hole are formed in the movable piece, through-flow gaps are reserved among the arc cantilevers, the fixed ring and the movable piece, when the damping valve is not electrified, the movable piece is pressed on the passive valve seat, the center hole and the through-flow gap are closed, fluid flows into the main valve seat through the surface small hole for preflow flow, when the damping valve is electrified, the movable piece breaks away from the passive valve seat along the axial direction to form a preset stroke, and the center hole and the through-flow gap is opened, and the fluid flows out of the main valve seat through the center hole or the through-flow gap to the outside after the damping valve is electrified. The flow regulating device further comprises a main-stage preload spacer, wherein the main-stage preload spacer is pressed on the passive valve seat, and the main-stage preload spacer is positioned between the passive valve seat and the leaf spring and is used for providing initial preload for the leaf spring. Further, the number of the main-stage preloading gaskets is one or more. The flow regulating device further comprises a main-stage fulcrum gasket, wherein the main-stage fulcrum gasket is attached to one end surface of the leaf spring, which is far away from the passive valve seat, and is used fo