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transmission

A transmission and transmission housing technology, which is applied to transmission parts, belts/chains/gears, mechanical equipment, etc., can solve the problems of increased processing costs, complex transmission housing structure, large transmission housing, etc., and achieve reliable ventilation The effect of the function

Active Publication Date: 2016-09-21
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when a dedicated breather chamber is formed in the transmission case, there is a problem that the structure of the transmission case becomes complicated, the processing cost increases, or the transmission case increases in size.

Method used

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no. 1 Embodiment approach

[0030] Below, according to Figure 1 ~ Figure 4 The first embodiment of the present invention will be described.

[0031] Such as figure 1 and figure 2 As shown, an air pipe 12 bent in a crank shape is provided on an upper wall 11a of a transmission case 11 of an automotive transmission. An inlet opening 12 a communicating with the internal space 13 of the transmission case 11 is formed at the lower end of the breather pipe 12 penetrating the upper wall 11 a of the transmission case 11 from top to bottom. In addition, an outlet opening 12b communicating with the external space 14 of the transmission case 11 is formed at the upper end of the breather pipe 12, and the upper part of the outlet opening 12b is covered with a cap 15 for preventing foreign matter from entering.

[0032] The rotating shaft 16 arranged in the vertical direction is rotatably supported on the boss portion 11b formed on the upper wall 11a of the transmission case 11, and the lower end of the rotating ...

no. 2 Embodiment approach

[0048] Below, according to Figure 5 A second embodiment of the present invention will be described.

[0049] In the first embodiment described above, the oil adhering to the lock plate 17 is made to drop to the bottom of the transmission case 11 by inclining the upper surface of the lock plate 17, while in the second embodiment, the lock plate 17 is A plurality of oil discharge grooves 17b extending radially from the rotating shaft 16 are formed on the upper surface thereof to have a constant thickness. The oil discharge grooves 17b... are inclined downward so as to become deeper as the distance from the rotation shaft 16 increases, and the front ends of the oil discharge grooves 17b... reach the recesses a to f of the lock plate 17 .

[0050] According to this embodiment, the oil adhering to the upper surface of the lock plate 17 falls to the bottom of the transmission case 11 through the through hole 17a, or flows through the inclined oil discharge groove 17b... and falls ...

no. 3 Embodiment approach

[0053] Below, according to Figure 6 and Figure 7 A third embodiment of the present invention will be described.

[0054] The third embodiment has a rib 11d hanging down from the upper wall 11a of the transmission case 11 supporting the breather pipe 12 . One end of the rib 11d in the length direction is connected to the side wall 11c connected to the upper wall 11a of the transmission case 11, and the other end side in the length direction extends across the air pipe 12 and the rotating shaft 16. The lower end of the rib 11d is separated by The minute gap is opposed to the upper surface of the lock plate 17 .

[0055] A shaft end of a predetermined rotating shaft 33 of the continuously variable transmission T is supported via a ball bearing 32 on a shaft support portion 11 e protruding from a side wall 11 c of the transmission case 11 . The ball bearing 32 has an inner ring 32a fitted to the outer circumference of the rotating shaft 33, an outer ring 32b fitted to the inn...

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Abstract

The invention provides a speed changer. Function of a breather pipe can be ensured without a ventilation chamber being formed on a speed changer housing. Based on the shifts chosen by a driver, a locking plate (17) rotating around a rotating shaft (16) rotates to a position covering the lower part of an entrance opening (12a) of the breather pipe (12) in a shift out of a parking shift, so oil stirred up by variable gear of the speed changer is shielded by the locking plate (17) and is prevented from immersing into the entrance opening (2a) of the ventilation pipe (12). The locking plate (17) rotates to a position away from the lower part of the entrance opening (12a) in a parking shift where oil will not be stirred up, so the breather pipe (12) connects the inside and the outside of the speed changer housing (11) so that a ventilation function can be effectively performed.

Description

technical field [0001] The present invention relates to a transmission that has: a transmission case that stores oil at the bottom; a breather pipe that communicates the inside and outside of the transmission case; and a lock plate that is arranged inside the transmission case according to a gear selected by the driver to rotate about an axis of rotation; and a park lock mechanism connected to the lock plate to constrain the transmission shaft against rotation in the park gear. Background technique [0002] According to the following patent document 1, it is known that a plurality of deflection surfaces are formed on a lock plate for a parking lock mechanism arranged inside a transmission case, and the oil stirred up by the differential gear is aligned with the gear selected by the driver. The predetermined deflection surface of the lock plate rotated by the position collides, and the direction of the oil is deflected and supplied to the oil collection tank, thereby adjustin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H57/04
CPCF16H57/027F16H57/0452
Inventor 仓地忍宫田和典木村光男长滨慎治
Owner HONDA MOTOR CO LTD