Apparatus for auto shifting of vehicle

Patent metadata

Field	Value
Publication number	US-10415658-B2
Application number	US-201715823135-A
Country	US
Kind code	B2
Filing date	Nov 27, 2017
Priority date	Jul 28, 2017
Publication date	Sep 17, 2019
Grant date	Sep 17, 2019

Abstract

An apparatus for automatic shifting of a vehicle may include a rotation shaft connected to an output shaft to rotate together; first connecting members each having a first end portion to which a first link disposed on the rotation shaft is hinged and a second end portion to which a centrifugal weight is disposed, to pivot about the first end portions by centrifugal force; second connecting members each having a first end portion hinged to the middle portion of the first connecting member and a second end portion hinged to a second link disposed on the rotation shaft; a slider disposed on the rotation shaft to be coupled to any one of the first link and the second link and sliding in an axial direction of the rotation shaft; and a shift fork connected to the slider to engage a synchronizer with a shift stage gear.

First claim

What is claimed is:

1. An apparatus for automatic shifting of a vehicle, the apparatus comprising:
a rotation shaft connected to an output shaft to rotate together;
first connecting members each having a first end portion to which a first link disposed on the rotation shaft is hinged and a second end portion to which a centrifugal weight is disposed, to pivot about the first end portions by centrifugal force depending on a rotation speed of the rotation shaft;
second connecting members each having a first end portion hinged to a middle portion of the first connecting member and a second end portion hinged to a second link disposed on the rotation shaft;
a slider disposed on the rotation shaft to be coupled to one of the first link and the second link and sliding in an axial direction of the rotation shaft; and
a shift fork connected to the slider to engage a synchronizer with a shift stage gear, depending on a position of the slider.

2. The apparatus of claim 1 , wherein the one of the first link and the second link that is coupled to the slider slides in the axial direction of the rotation shaft and the other of the first link and the second link is fixed on the rotation shaft.

3. The apparatus of claim 1 , further including a compression elastic member disposed on the rotation shaft and having first and second end portions fixed to the first link and the second link, respectively, to apply a first elastic force.

4. The apparatus of claim 3 , further including diaphragm elastic members disposed on the rotation shaft and coupled to the slider to apply a second elastic force to a first side or a second side in the axial direction of the rotation shaft, depending on the position of the slider.

5. The apparatus of claim 4 , wherein the diaphragm elastic members change a direction in which the diaphragm elastic members apply the elastic force when the rotation speed of the rotation shaft reaches a predetermined speed, and
the shift fork is connected to the slider to start engaging the synchronizer with the shift stage gear at a point of time when the direction in which the diaphragm elastic members apply the elastic force is changed.

6. The apparatus of claim 1 , wherein the shift fork is fixed to the slider to slide with the slider.

7. The apparatus of claim 1 , wherein the shift fork is disposed to contact with an end portion of the slider, so the shift fork is pushed by a movement of the slider and is moved perpendicular to the slider to engage the synchronizer with the shift stage gear.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Eo Soon Ki
• Shin Yong Uk
• KANG Ma Ru

Classifications

• F16D43/06 Primary

  with centrifugal masses actuating axially a movable pressure ring or the like · CPC title

• F16H59/08 Primary

  Range selector apparatus · CPC title

• F16D23/02

  Arrangements for synchronisation, also for power-operated clutches (shape or mounting of interengaging parts of clutch members to facilitate engagement F16D11/08) · CPC title

• F16H63/3069

  Interrelationship between two or more final output mechanisms · CPC title

• F16D2023/141

  characterised by using a fork; Details of forks · CPC title