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A dog-tooth parking mechanism, transmission, parking method and method for releasing parking

A technology of parking mechanism and transmission, which is applied in the direction of mechanical equipment, components with teeth, transmission device control, etc. It can solve the problems of insufficient mechanical braking force at the wheel, lowering the safety level of the whole vehicle, and long-term work of the hydraulic system. Achieve the effect of saving installation space, improving safety level and small size

Active Publication Date: 2021-11-05
NIO CO LTD
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AI Technical Summary

Problems solved by technology

When parking on a large slope, the mechanical braking force at the wheels may not be sufficient and hydraulic intervention is required, but the hydraulic system needs to work for a long time, which reduces the safety level of the vehicle

Method used

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  • A dog-tooth parking mechanism, transmission, parking method and method for releasing parking
  • A dog-tooth parking mechanism, transmission, parking method and method for releasing parking
  • A dog-tooth parking mechanism, transmission, parking method and method for releasing parking

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Embodiment Construction

[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0030] figure 1 It is an axial schematic diagram of the dog tooth parking mechanism provided by an embodiment of the present invention.

[0031] figure 2 yes figure 1 Schematic cross-section of the middle dog parking mechanism.

[0032] image 3 yes figure 2 Partial enlarged view of A in the center.

[0033] Figure 4 yes figure 1 The schematic diagram of the installation position of the parking dog in the tran...

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Abstract

A dog-tooth parking mechanism, a transmission, a parking method, and a parking release method. The dog-tooth parking mechanism is arranged in a transmission, and the transmission includes a housing and a planetary gear mechanism arranged in the housing. The dog-tooth parking mechanism includes a planetary gear mechanism Coaxially arranged dog sleeve, wet clutch, parking dog mounting seat and parking dog; the wet clutch is fixedly connected to the planet carrier of the planetary gear mechanism; the parking dog mounting seat is set on the housing; the parking dog is a ring Shaped structure, installed on the parking dog mounting seat, which is set to be stationary in the axial direction relative to the parking dog mounting seat, and can rotate a preset angle around its own axis; the dog tooth combination sleeve is slidingly sleeved on the planetary gear In terms of mechanism, it is set to be able to slide along the axial direction of the planetary gear mechanism to the junction of the wet clutch and the parking dog, and combine with the wet clutch and the parking dog at the same time to fix the planet carrier. The canine parking mechanism realizes the parking function of the transmission.

Description

technical field [0001] The invention relates to the technical field of vehicle parking brakes, in particular to a dog tooth parking mechanism, a transmission, a parking method and a parking release method. Background technique [0002] At present, most pure electric passenger vehicles use reducers, and some reducers are equipped with parking mechanisms. The parking mechanisms generally adopt electromechanical execution methods, resulting in complex structures of the parking mechanisms and occupying limited space in the powertrain. [0003] A small number of pure electric passenger vehicles use transmissions. Due to the limitation of installation space, most pure electric transmissions do not have a parking mechanism. [0004] With the integration and miniaturization of electric vehicle powertrain design, it is very difficult to arrange electromechanical actuator parking devices. As a result, many newly developed electric vehicle powertrains are forced to abandon the mechanic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H63/34
CPCF16H63/34
Inventor 刘怀远张铃陈运峰
Owner NIO CO LTD
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