Runner-variable semi-active mount

Abstract

The invention discloses a runner-variable semi-active mount. The runner-variable semi-active mount comprises a rubber main spring, an inner core, an outer framework, a base, a runner assembly, a decoupling film, a base bowl, a closed piece, a drive mechanism and a sealing piece. A containing space is defined by the rubber main spring, the inner core, the outer framework and the base. The runner assembly is arranged in the containing space. An upper liquid cavity is formed between the upper surface of the runner assembly and the rubber main spring. A connecting channel, a receiving space, first liquid holes, second liquid holes and a throttling hole penetrating the upper surface and the lower surface of the runner assembly are arranged on the runner assembly. The decoupling film is arranged in the receiving space and divides the receiving space into a first space and a second space. The first space communicates with the upper liquid cavity through the first liquid holes. The runner-variable semi-active mount is simple in structure, convenient to use and good in vibration isolation effect.

Description

technical field [0001] The invention relates to the technical field of semi-active mounts, in particular to a semi-active mount with variable flow channels. Background technique [0002] Today, the NVH problem of automobiles has always been a technical problem that plagues people. The vibration of automobiles affects the ride comfort and the life of the vehicle. The automobile engine is the main excitation source of the automobile, and its vibration can be transmitted to the cab through the chassis, causing the steering wheel and seat to vibrate, affecting the driver's operation, and deepening the driver's fatigue. A better solution is to install engine mounts to isolate vibrations. Therefore, it is particularly important to study mounts that are simple in process, low in price, and superior in performance. Although the ordinary pure rubber mount has simple processing technology and low price, its limitation is that the damping is low, and dynamic hardening is prone to occu...

AI Technical Summary

Problems solved by technology

Active mounts need to rely on external energy to offset the vibration, which consumes a lot of energy, but the key lies in the complex processing technology and high failure rate, which is difficult to achieve with the current technical level

There are currently several semi-active hydraulic mounts, the main implementation methods are: (1) The form of controlling the stiffness of the decoupling membrane, the decoupling membrane is formed into an air-tight cavity in the hydraulic cavity, and a small hole is opened on the suspension wall Make the air cavity communicate with the atmosphere, and set a solenoid valve to block or open the small hole to control the stiffness of the decoupling membrane. In this embodiment, the sealing of the air cavity is difficult. If there is leakage or gas, the semi-active Suspension failure

(2) The form of variable flow channel, for example, the Chinese patent literature discloses a semi-active hydraulic mount with variable flow channel [Application No.: 201410228440.2], which is characterized in that a variable flow channel is added to the side wall opening of the mount and the flow channel body Valve and the electronic control mechanism that drives the variable flow valve to rotate. This implementation requires high precision of electronic control, and the sealing is difficult, and the added sealing ring and O-ring also increase the cost.

(3) Electrorheological and magnetorheological forms, this embodiment changes the viscosity of the damping fluid by applying a current or a magnetic field, but its magnetic particles are easy to settle, resulting in poor suspension performance

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