Automatic transmission parking mechanism
A technology of automatic transmission and parking mechanism, which is applied in the direction of mechanical equipment, transmission device control, and components with teeth, etc., can solve the problems of heavy parking device, inaccurate stroke calculation, large volume, etc., and achieve weight reduction, Simplified processing technology, small size effect
Pending Publication Date: 2019-09-17
SHAANXI FAST GEAR CO
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Problems solved by technology
[0004] The purpose of the present invention is to solve the problems of heavy weight, large volume and inaccurate stroke calculation of the current parking device, and provide a parking mechanism for automatic transmission, which can effectively reduce the weight of the parking device, save space, and simplify the processing steps , and make the calculation results of the itinerary clear
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[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0027] The parking mechanism of the automatic transmission of the present invention uses a parking lock to replace the common pawl structure. In the non-P state, the extrusion boss does not come into contact with the parking lock, and the parking lock is lifted by the return spring; In the P gear state, the driving device drives the parking jack to move, and the extrusion boss comes into contact with the parking lock, so that the extrusion boss squeezes the parking lock, and the parking lock will be squeezed by the parking jack. Under the action of force and the elastic force of the return spring, it moves down along the guide sleeve of the parking lock, and the front end of the parking lock will be stuck between the tooth grooves of the parking wheels, realizing the parking function in the P gear, thereby completing the transmission w...
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The invention relates to an automatic transmission parking mechanism. The problems that a current parking device is large in weight and large in size, and stroke calculation is not accurate are solved. The automatic transmission parking mechanism comprises a drive device, a sliding block cover plate, a parking ejector rod assembly, a parking lock, a return spring, a parking lock guide sleeve and a parking wheel, wherein the sliding block cover plate, the parking ejector rod assembly, the parking lock, the return spring, the parking lock guide sleeve and the parking wheel are sequentially arranged from top to bottom. The parking ejector rod assembly comprises a parking ejector rod and an extrusion boss, the parking ejector rod is driven by the drive device to move, and the extrusion boss is arranged on the parking ejector rod and located between the sliding block cover plate and the parking lock. The sliding block cover plate is fixedly arranged on a transmission shell, and an extrusion groove matched with the extrusion boss in shape is formed in the sliding block cover plate and used for pressing the extrusion boss. The parking lock guide sleeve is fixedly arranged on the transmission shell, the return spring is arranged in the parking lock guide sleeve and limited by a limiting block arranged in the parking lock guide sleeve, the parking lock penetrates through the return spring, and the lower end of the parking lock stretches out of the parking lock guide sleeve.
Description
technical field [0001] The invention relates to an automatic transmission, in particular to a parking mechanism of the automatic transmission. Background technique [0002] With the continuous improvement of living standards, the penetration rate of automobiles is also increasing year by year, and automobiles have become an indispensable means of transportation for people to travel. In order to pursue the comfort of travel, the technology of automatic transmissions is also constantly improving. For the automatic transmission, it is provided with a set of unique parking mechanism. When in the P gear, the parking pawl can lock the parking wheel connected to the transmission output shaft to prevent it from outputting speed. [0003] Parking requires a series of mechanisms to ensure its normal operation, and the direct completion of the parking function is to make the protrusion of the parking pawl stuck in the tooth groove of the parking wheel. However, the structure of the pa...
Claims
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CPCF16H63/3425
Inventor 严鉴铂刘义王亚锋聂幸福冯浩成王凯峰丁斌侯旭辉
Owner SHAANXI FAST GEAR CO