OIL PASSAGE STRUCTURE FOR TRANSMISSION
First Claim
1. An oil passage structure for a transmission comprising:
- a transmission case;
a transmission housing chamber formed in the transmission case, the transmission housing chamber reserving oil and housing a transmission mechanism therein;
a valve housing chamber formed in the transmission case so as to be disposed above an oil level in the transmission housing chamber, the valve housing chamber reserving oil and housing a valve unit therein;
a drain port formed so as to communicate with the valve housing chamber and the transmission housing chamber; and
a drain plug detachably disposed in the drain port,wherein oil reserved in the valve housing chamber is drained therefrom by pulling the drain plug out of the drain port, guiding oil from the valve housing chamber to the transmission housing chamber, and reserving oil in the transmission case.
3 Assignments
0 Petitions
Accused Products
Abstract
An oil passage structure for a transmission includes a transmission case having a transmission housing chamber for reserving working oil and housing a continuously variable transmission mechanism therein, and a valve housing chamber for reserving the working oil and housing a valve unit therein. Further, the valve housing chamber housing the valve unit is disposed above an oil level in the transmission housing chamber. Furthermore, the valve housing chamber and the transmission housing chamber communicate with each other through a drain port closed with a drain plug. In demounting of the valve unit, the drain plug is pulled out to open the drain port. Hereby, the working oil can be transferred from the valve housing chamber to the transmission housing chamber, and the valve unit can be demounted without draining the working oil from the transmission case.
14 Citations
10 Claims
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1. An oil passage structure for a transmission comprising:
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a transmission case; a transmission housing chamber formed in the transmission case, the transmission housing chamber reserving oil and housing a transmission mechanism therein; a valve housing chamber formed in the transmission case so as to be disposed above an oil level in the transmission housing chamber, the valve housing chamber reserving oil and housing a valve unit therein; a drain port formed so as to communicate with the valve housing chamber and the transmission housing chamber; and a drain plug detachably disposed in the drain port, wherein oil reserved in the valve housing chamber is drained therefrom by pulling the drain plug out of the drain port, guiding oil from the valve housing chamber to the transmission housing chamber, and reserving oil in the transmission case. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification