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Vehicle transmission

A transmission and vehicle technology, which is applied to vehicle gearboxes, vehicle components, clutches, etc., can solve the problem of increasing the number of parts and achieve the effect of reducing the number

Active Publication Date: 2018-03-23
TOYOTA JIDOSHA KK +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a sensor needs to be provided for each dog clutch, and as a result, the number of parts may increase

Method used

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  • Vehicle transmission
  • Vehicle transmission
  • Vehicle transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] figure 1 It is a schematic diagram schematically showing the structure of a vehicle transmission 10 (hereinafter, referred to as the transmission 10 ) as an embodiment of the present invention. The transmission 10 is a multi-speed transmission provided on a power transmission path between the engine 12 and the drive wheels 14 and capable of eight forward speeds and one reverse speed.

[0038] The transmission 10 includes: an input shaft 18 that receives power from the engine 12 through a clutch 16; an output shaft 20 that is connected to the driving wheels 14 through a differential mechanism 19 and the like in a power-transmittable manner; The shaft 24 and the second shaft 26 are arranged on a power transmission path between the input shaft 18 and the output shaft 20 . The input shaft 18 and the output shaft 20 are arranged in series on the same axis C1. The first shaft 24 is arranged on an axis C2 parallel to the axis C1. The second shaft 26 is arranged on an axis C...

Embodiment 2

[0091] Figure 5 It is a schematic diagram of a vehicle transmission 100 (hereinafter, referred to as a transmission 100 ) corresponding to another embodiment of the present invention. The transmission 100 is provided on a power transmission path between the engine 12 and the driving wheels 14 . In the transmission 100 of the present embodiment, different from the transmission 10 of the foregoing embodiments, the first shaft 106 provided with the first drive gears (even-numbered drive gears) 118a to 118c constituting the even stages and the first shaft 106 provided with the first drive gears constituting the odd stages The second drive gears (odd-numbered drive gears) 122a and 122b differ in that the second shafts 108 are arranged on the common axis and are arranged at overlapping positions when viewed from the radially outer side. Hereinafter, description will focus on structures different from those of the transmission 10 of the aforementioned embodiment.

[0092] The transm...

Embodiment 3

[0108] Figure 6 It is an exploded perspective view showing a dog clutch 150 corresponding to still another embodiment of the present invention. The dog clutch 150 of this embodiment is used instead of the dog clutch 32 (transmission 10) or the dog clutch 114 (transmission 100) of the above-mentioned embodiment, for example. The jaw clutch 150 of this embodiment is composed of a hub 152 and a jaw ring 154 .

[0109] The dog clutch 150 includes a hub 152 , a dog ring 154 arranged on the outer peripheral side of the hub 152 , and dogs 160 formed on the first input gear 156 and the second input gear 158 . In addition, although the cog 160 of the 2nd input gear 158 is not shown in figure, the cog 160 similar to the cog 160 of the 1st input gear 156 is formed.

[0110] The hub 152 is formed in a cylindrical shape, and is relatively non-rotatably fitted to an input shaft (not shown). In addition, a plurality of fitting grooves 162 parallel to the axis C1 are formed on the outer p...

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PUM

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Abstract

The invention provides a vehicle transmission. Connection and disconnection of power transmission paths between an input shaft (18) and a first shaft, and between the input shaft and the second shaft(26) are switched by a jaw clutch (32); power transmission paths of odd stages and even states are connected and disconnected by a synchronization clutch (72a,72e); therefore, regardless of a number of a variable speed of a gearbox (18), only one jaw clutch (32) is provided; thus, a number of detectors for detecting rotation positions of the opposite jaw teeth forming the jaw clutch (32) cannot beincreased proportionally based on a variable speed number of the gearbox; and increase of part numbers can be prevented and multi-stage of the gearbox can be realized.

Description

technical field [0001] The present invention relates to a structure of a vehicle transmission provided with a dog clutch. Background technique [0002] There is known a transmission for a vehicle that includes a dog clutch and that shifts to a plurality of shift speeds by switching the dog clutch on and off. The transmission of Patent Document 1 is such a vehicle transmission. In the transmission of Patent Document 1, the first drive gear 41 to the fifth drive gear 45 are arranged on the input shaft 31 , and the first driven gear 51 to the fifth driven gear 55 are arranged on the output shaft 32 . In addition, between the first driven gear 51 and the second driven gear 52, there are devices for disconnecting the connection between the first driven gear 51 and the output shaft 32 and between the second driven gear 52 and the output shaft 32. The first selection mechanism 61 (jaw clutch). Between the third drive gear 43 and the fourth drive gear 44, a second selection mecha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/12F16H3/093F16D11/10
CPCF16D11/10F16H3/093F16H3/12F16H2200/2094F16H2200/0052F16H2200/006F16H2200/2043F16H2200/2048F16H61/688F16H3/006F16H2003/0811F16H2003/0931F16H3/097F16D21/04F16D11/14F16D23/02F16H63/30F16H2063/3093F16H2003/0933
Inventor 吉村知浩竹内伸一市川晶彦薮田润克莱门斯·波尔迈尔拉尔斯·范·莱文安德烈·米勒帕特里齐奥·阿戈斯蒂内利
Owner TOYOTA JIDOSHA KK
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