KR20120063339A

KR20120063339A - Compound planetary gear for automated manual transmission

Info

Publication number: KR20120063339A
Application number: KR1020100124462A
Authority: KR
Inventors: 장준우
Original assignee: 현대모비스 주식회사
Priority date: 2010-12-07
Filing date: 2010-12-07
Publication date: 2012-06-15

Abstract

The present invention discloses a composite planetary gear device for an automated manual transmission. Composite planetary gear device of the automatic manual transmission according to an aspect of the present invention, the motor; A ring gear integrally formed with the housing of the reducer; And a plurality of stages provided in the housing and combining a planetary gear, a sun gear, and a carrier. When the motor rotates, the plurality of stages are rotated by the ring gear and the drive shaft of the motor. And a compound planetary gear set which obtains a gear ratio doubled by a plurality of stages and moves the clutch lever at a thrust corresponding to the gear ratio.

Description

Compound Planetary Gear for Automated Manual Transmission

The present invention relates to a compound planetary gear device, and more particularly to a compound planetary gear device for an automated manual transmission that can double the gear ratio and thrust.

In recent years, the vehicle employs an Automated Manual Transmission that combines the advantages of a manual transmission and an automatic transmission.

The automated manual transmission is equipped with two clutches and actuators to perform gear shifting and clutch interruption under the control of the TCU.

Conventional automated manual transmission is composed of one gear device among sun gear, planetary gear, carrier, and ring gear, and has a large load on the gear teeth, and requires synchronization during shifting, so that power from the engine can be adjusted. It was only possible to change gears.

In addition, the conventional automatic manual transmission has a limited gear ratio that can be provided, so that there is a problem in that the installation space is increased to increase the rotational force.

An object of the present invention is to provide a compound planetary gear device for an automatic manual transmission, which is devised in the technical background as described above, which is composed of a plurality of stages and which can double thrust by the plurality of stages.

Composite planetary gear device of the automatic manual transmission according to an aspect of the present invention, the motor; A ring gear integrally formed with the housing of the reducer; And a plurality of stages provided in the housing and combining a planetary gear, a sun gear, and a carrier. When the motor rotates, the plurality of stages are rotated by the ring gear and the drive shaft of the motor. And a compound planetary gear set which obtains a gear ratio doubled by a plurality of stages and moves the clutch lever at a thrust corresponding to the gear ratio.

According to the present invention, the gear ratio and the thrust can be doubled by the plurality of stages even if the same rotational force is transmitted as a gear device composed of a plurality of stages, and a conventional single stage, and can be applied to a relatively small space.

In addition, the present invention uses a planetary gear that all the gears are always engaged so that the rotation is quiet and the rotational force is transmitted by several gear trains, so that the load received by each gear is not only small but also shiftable without synchronization. It has the advantage of shifting without interrupting power from the engine.

1 is a block diagram showing an automatic manual transmission in accordance with an embodiment of the present invention.
2 illustrates a composite planetary gear set according to an embodiment of the present invention.
3 is a view showing a housing provided with a ring gear according to an embodiment of the present invention.
4 illustrates a composite planetary gear set according to an embodiment of the present invention.
Figure 5 is a structural diagram showing a cross section of the composite planetary gear device according to an embodiment of the present invention.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the present embodiments are intended to complete the disclosure of the present invention, and the general knowledge in the art to which the present invention pertains. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. As used herein, the terms " comprises, " and / or "comprising" refer to the presence or absence of one or more other components, steps, operations, and / Or additions.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing an automatic manual transmission according to an embodiment of the present invention, Figure 2 is a view showing a composite planetary gear set according to an embodiment of the present invention, Figure 3 according to an embodiment of the present invention 4 is a view illustrating a housing having a ring gear, and FIG. 4 is a view illustrating a composite planetary gear set according to an exemplary embodiment of the present invention.

As shown in FIG. 1, the compound planetary gear device 20 according to the exemplary embodiment of the present invention is provided in the automated manual transmission 10, and as shown in FIG. 2, the motor 100 and the ring gear 320. ) And a composite planetary gear set 200.

The motor 100 rotates the drive shaft 500 of the reducer as it rotates, thereby rotating the composite planetary gear set 200.

As shown in FIG. 3, the ring gear 320 is integrally formed in the housing 310 and fixed to the housing 310, and meshes with the composite planetary gear set 200 to rotate the composite planetary gear set 200. And idle.

As shown in FIG. 4, the composite planetary gear set 200 includes a planetary gear 210, a sun gear 230, a carrier 220, and the like, and includes a plurality of stages.

Here, the stages of the composite planetary gear set 200 may be configured in various numbers, but the following description will be given by taking the case of the composite planetary gear set 200 having three stages as an example.

When the motor 100 rotates, the compound planetary gear set 200 obtains a gear ratio doubled by a plurality of stages as the plurality of stages are rotated by the ring gear 320, and the clutch is driven by a thrust corresponding to the gear ratio. Move the lever 400.

The sun gear 230 is connected to the drive shaft 500 of the motor 100 to rotate the composite planetary gear set 200 as a whole.

Four planetary gears 210 are provided at each stage, and engage and rotate with the sun gear 230 connected to the drive shaft 500 of the motor 100 and the ring gear 320 fixed to the housing 310.

The carrier 220 is configured in a disc shape having a hole in which the sun gear 230 is fitted in the center, and distinguishes each end of the composite planetary gear set 200.

The clutch lever 400 shifts gears in accordance with the thrust generated by the compound planetary gear set 200.

Hereinafter, the thrust of the composite planetary gear device according to the exemplary embodiment of the present invention will be described with reference to FIG. 5. 5 is a structural diagram showing a cross section of a composite planetary gear device according to an embodiment of the present invention.

As shown in FIG. 5, when the motor 100 rotates, the compound planetary gear device 20 generates gear ratios by the first to third stages, thereby providing a deceleration ratio.

That is, the reduction ratio of the compound planetary gear device 20 is calculated by multiplying the gear ratios of the respective stages, and may be calculated as in Equation 1 below.

The composite planetary gear device 20 may generate a thrust (see F: red arrow) calculated as in Equation 2 below and move the clutch lever 400 by using the generated thrust.

In Equation 2, μ is the efficiency of the compound planetary gear device 20, T is the torque of the motor, and R is the length of the clutch lever.

As described above, the present invention is composed of a plurality of stages, and even if the same rotational force is transmitted as a gear device composed of a conventional single stage, the gear ratio and thrust can be doubled by the plurality of stages, and can be applied to a relatively small space. .

In addition, the present invention uses a planetary gear in which all gears are always engaged so that rotation is quiet and rotational force is transmitted by several gear trains, so that the load received by each gear tooth is not only small but also synchronized. If it is not possible to shift, there is an advantage that can be shifted without interrupting the power coming from the engine.

While the present invention has been described in detail with reference to the accompanying drawings, it is to be understood that the invention is not limited to the above-described embodiments. Those skilled in the art will appreciate that various modifications, Of course, this is possible. Accordingly, the scope of protection of the present invention should not be limited to the above-described embodiments, but should be determined by the description of the following claims.

Claims

motor;
A ring gear integrally formed with the housing of the reducer; And
It is provided in the housing, and composed of a plurality of stages in combination with the planetary gear, sun gear, and carrier, and when the motor rotates, the plurality of stages are rotated by the ring gear and the drive shaft of the motor The composite planetary gear set which obtains the gear ratio doubled by the stage of and moves the clutch lever with the thrust corresponding to the gear ratio.
Compound planetary gear device of an automated manual transmission comprising a.

According to claim 1, The composite planetary gear set,
A planetary gear composed of the plurality of stages engaged with the ring gear fixed by the housing and revolving in rotation as the motor rotates; And a plurality of carriers positioned in the center of the plurality of stages and engaged with the planetary gears of the plurality of stages, and a plurality of carriers for separating the plurality of stages.

According to claim 1, The composite planetary gear set,
The planetary gear unit of the automated manual transmission comprising the plurality of stages, wherein the gear ratio is doubled by the product of the gear ratios of each of the plurality of stages.

The reduction ratio of the composite planetary gear set according to claim 1,
Compound planetary gear device of the automated manual transmission which is calculated as a product of the gear ratios of the plurality of stages.

The thrust by the composite planetary gear set according to claim 4,
And multiplying the reduction ratio by the efficiency of the compound planetary gear set and the torque of the motor to divide the length of the clutch lever.