Hydraulic parking execution assembly and transmission
A hydraulic parking technology, applied to components with teeth, belts/chains/gears, mechanical equipment, etc., can solve the problems of easy failure of electromagnets, and achieve the effect of not easy failure, low cost and simple structural design
Active Publication Date: 2019-11-08
NINGBO SHANGZHONGXIA AUTOMATIC TRANSMISSION +1
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Problems solved by technology
[0003] The purpose of the first aspect of the present invention is to provide a hydraulic parking actuator assembly, which solves the problem that the electromagnet used in the parking actuator in the prior art is prone to failure
Method used
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Embodiment Construction
[0050] figure 1 It is a schematic principle diagram of the electro-hydraulic control parking mechanism in the prior art. When parking, the electromagnetic proportional valve is unloaded, the electromagnet 10 is energized, and the lock bolt 20 is sucked out of the piston positioning groove 50, and the spring 30 pushes the piston and the parking actuator 60 to the parking position. To cancel the parking, the electromagnet 10 is energized, the lock bolt 20 is sucked out of the piston positioning groove 50, the solenoid valve supplies pressure oil to the oil cylinder 40, the piston moves leftward under the action of the pressure oil, and the parking actuator 60 is pulled out of the parking position. car location. The electromagnet in this electromagnetically operated parking mechanism is costly, prone to failure, and takes up space. In addition, software control is required, which has the problems of high development cost and relatively complicated control.
[0051] figure 2 i...
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The invention provides a hydraulic parking execution assembly and a transmission, and relates to the field of vehicles. The hydraulic parking execution assembly comprises a shell, a movable module, anexecution rod and a pressing mechanism. The shell defines an inner cavity in which a fluid can flow in and out. The movable module is axially arranged along the inner cavity and can be movably extended out of / into the inner cavity under the action of the fluid pressure, and a limiting part is arranged on the movable module. The execution rod is connected with the movable module and is driven through moving of the movable module to be switched between a parking state / a driving state. The pressing mechanism is provided with a high-position stroke and a low-position stroke, and is configured tobe switched between the high-position stroke / the low-position stroke under extruding caused through extending out of the inner cavity of the movable module, and when the movable module is in the innercavity, the pressing mechanism is in the low-position stroke, the execution rod is in the parking state. When the pressing mechanism is in the high-position stroke, the pressing mechanism is matchedwith the limiting part to enable the execution rod to be in the driving state. According to the hydraulic parking execution assembly, the structure design is simple, the occupied space is small, and the failure is not prone to occur.
Description
technical field [0001] The invention relates to the field of vehicles, in particular to a hydraulic parking actuator assembly and a transmission. Background technique [0002] The parking mechanism is an indispensable key component in the automatic transmission of an automobile, and has been controlled by the transmission shift lever for many years. With the development of computer electronic control technology, some automobile manufacturers have begun to adopt electronically controlled parking mechanisms in recent years. figure 1 It is a schematic diagram of the electro-hydraulic control parking mechanism in the prior art. When parking, the electromagnetic proportional valve is unloaded, the electromagnet is energized, and the lock bolt is sucked out of the piston positioning groove, and the spring pushes the piston and the parking actuator to the parking position. If the parking is canceled, the electromagnet is energized, and the lock bolt is sucked out of the piston po...
Claims
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IPC IPC(8): F16H63/34
CPCF16H63/3483F16H63/3475
Inventor 潘定翔林霄喆许正功
Owner NINGBO SHANGZHONGXIA AUTOMATIC TRANSMISSION