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Parking braking mechanism, parking braking system, automatic transmission and automobile

A braking mechanism and parking technology, which is applied in the direction of mechanical equipment, transmission control, and components with teeth, etc., can solve the problem of high cost of driving motors, and achieve the effect of reducing costs

Active Publication Date: 2018-05-29
SAIC MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The problem solved by the present invention is that the parking brake system in the prior art requires a drive motor with a relatively large torque when unlocking the locking gear, resulting in high cost of the drive motor

Method used

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  • Parking braking mechanism, parking braking system, automatic transmission and automobile
  • Parking braking mechanism, parking braking system, automatic transmission and automobile
  • Parking braking mechanism, parking braking system, automatic transmission and automobile

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Embodiment Construction

[0043] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0044] refer to figure 2 , the parking brake system includes a parking brake mechanism 100 , a locking gear 200 and a drive motor 300 . The parking brake mechanism 100 is disposed between the locking gear 200 and the driving motor 300 , and the driving motor 300 implements locking or unlocking of the locking gear 200 through the parking braking mechanism 100 .

[0045] Specifically, the locking gear 200 has gear teeth 210 distributed along its circumference, and a tooth groove 220 is formed between two adjacent teeth 210, and the locking gear 200 is fixedly connected to the output shaft 400 of the gearbox.

[0046] The parking brake mechanism 100 has a pawl 10 having two states, a locked state and an unlocked state. Under normal circumsta...

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Abstract

The invention discloses a parking braking mechanism, a parking braking system, an automatic transmission and an automobile. The parking braking mechanism is used for locking a locking gear and comprises a detent, a parking sliding block and a movable pressing pin, the parking sliding block can push the detent to move, so that the detent locks the locking gear; the movable pressing pin can move toa locking position and an unlocking position, when the pressing pin is located at the locking position, the pressing pin can clamp the parking sliding block, and when the pressing pin is located at the unlocking position, the pressing pin relieves clamping on the parking sliding block. Therefore, when the locking gear is required to be unlocked, the pressing pin moves to the unlocking position, the pressing pin relieves clamping on the parking sliding block, by this time, only a small action force is required to be applied to the parking sliding block, the parking sliding block and the detentcan be separated, unlocking is finished, therefore, a driving motor with relatively small torque is only required, and the cost is reduced accordingly.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a parking brake mechanism, a parking brake system, an automatic gearbox and an automobile. Background technique [0002] In automatic transmission models, the gear positions of the gearbox are divided into P gear, R gear, N gear, D gear and so on. Among them, the P gear is the parking gear, which corresponds to the parking brake system inside the gearbox; its function is to enable the automatic transmission model to limit the movement of the vehicle through the gear, just like the manual transmission model. [0003] refer to figure 1 , is a structural diagram of a parking brake system in the prior art, and the parking brake system includes a parking brake mechanism 90 , a locking gear 98 and a drive motor 99 . Wherein, the parking brake mechanism 90 includes a pawl 91 and a rocker arm 92 , the pawl 91 can move to lock the locking gear 98 ; the driving motor 99 can drive the...

Claims

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Application Information

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IPC IPC(8): F16H63/34
CPCF16H63/3425F16H63/3433F16H63/3466
Inventor 雷太奇姜超何小明
Owner SAIC MOTOR
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