JPS602374Y2 - Gear transmission lubrication mechanism - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a lubrication mechanism for a gear transmission in an automobile.
A lubrication mechanism in which a press-molded oil feeder installed between the extension housing and the intermediate plate (or the rear wall of the transmission case) supplies lubrication to parts that require lubrication, such as the extension housing rear push and/or speedometer gear. Regarding improvements.

Press-molded oil feeders have large manufacturing tolerances, so both ends of the oil feeder are attached to the extension housing and intermezzo plate (or rear wall of the transmission case).
If the oil pump is press-fitted into the mounting hole, the oil pump may bend.

In order to deal with this, it is conceivable to make at least one of the reattachment holes a blank hole, but if the attachment hole is made a blank hole, the oil feeder will vibrate and produce abnormal noise.

The present invention was devised in view of the above circumstances, and one embodiment thereof will be described below based on the drawings.

FIG. 1 shows the rear interior of a remote control type gear transmission 10, and shows the transmission case 11.
, an output shaft 21 equipped with transmission gears 21a, 21b, 21c, and 21d, and transmission gears 22a* 22b, 22c.
, 22d, and an idler gear shaft 23 including a reverse idler gear 23a are assembled.

Further, a speedometer drive gear 21e is attached to the output shaft 21, and a sleeve yoke 21f is spline-coupled.

The sleeve yoke 21f is the extension housing 1
3 and is supported by a pusher 14 so as to be rotatable and slidable in the axial direction.

Also, within the housing, as shown in FIGS. 1 and 2, an oil feeder 30 is installed that extends from the intermezoate plate 12 to the rear end of the extension housing 13.

The oil feeder 30 is a press-molded product, and a drop hole 30a is provided in a portion located above the speedometer drive gear 21e.
is drilled.

Therefore, in this embodiment, the rear end 30b of the oil feeder 30 is press-fitted into the mounting hole 13a provided in the extension housing 13, and the front end 30c is press-fitted into the mounting hole 13a provided in the extension housing 13. As shown in FIG.
It is fitted into the interior of the oil pump 30 via a rubber bush 31 (positioned by the tongue piece 30d of the oil feeder 30).

Although not shown in the drawings, the oil feeder 30 is prevented from rotating relative to the extension housing 13 by a clamper at its center.

In addition, the mounting hole 13a is connected to the extension housing 13.
and an oil reservoir 16 formed between the oil seal 15 and the oil seal 15.

In the lubrication mechanism with such a configuration, the lubricating oil scooped up by the speed change gears, particularly the speed change gears 21d and 22d enters the oil feeder 30 and flows backward through the oil feeder 30, and a portion of the oil is drawn up from the drop hole 30a. It falls onto the speedometer drive gear 21e to lubricate the speedometer gear part, and the remaining part enters the oil reservoir 16 from the rear end 30b of the oil feeder 30 through the attachment hole 13a to lubricate the rear bushing 14.

By the way, in this lubrication mechanism, the rear end 30b of the oil feeder 30 is press-fitted into the mounting hole 13a, and the front end 30c is connected to the tapered hole 12 through the rubber bush 31.
Since the structure is such that it fits inside the oil pump 30, vibration of the oil pump 30 can be suppressed and abnormal noise can be prevented.
Even if the oil pump 30 is manufactured with a large manufacturing error, the rubber bushing 31 and the tapered hole 12a absorb the manufacturing error, and the problem of bending of the oil feeder 30 does not occur.

Furthermore, since the front end 30c of the oil feeder 30 and the tapered hole 12a are sealed by the rubber bush 31, the lubricating oil that has entered the oil feeder 30 does not leak, and a large amount (appropriate amount ) lubricating oil is supplied.

In addition, this invention uses a press-molded oil feeder installed between the extension housing and the rear wall of the transmission case to transfer the lubricating oil scraped up by the transmission gear to the extension housing rear push and/or the speedometer gear, etc. that needs to be lubricated. The same can be applied to a lubricating mechanism that supplies the lubricant to the parts.

In summary, in the present invention, the rear end of the oil feeder in the lubrication mechanism is press-fitted into the mounting hole provided in the extension housing, and the front end is fitted into the intermezoate plate or the rear wall of the transmission case. Its structural feature lies in the fact that it is fitted into a tapered hole that expands to the rear via a cylindrical elastic body, which suppresses the vibration of the oil pump and prevents the generation of abnormal noise. It is also possible to prevent the oil pump from bending.

[Brief explanation of the drawing]

Figure 1 is a sectional view showing the rear interior of the gear transmission, Figure 2 is a plan view showing the relationship between the intermezzo plate, extension housing, and oil pump, and Figure 3 is an enlarged view of the main parts of Figure 2. It is. Explanation of symbols, 10... Gear transmission, 11...
... Transmission case, 12 ... Intermediate plate, 12a ... Tapered hole, 13 ... Extension housing, 1
3a...Mounting hole, 14...Rear bush, 21d, 22d...Transmission gear, 21e...
...Speedometer drive gear, 30...
・Oil pump, 30b... Rear end, 30c...
・Front end, 31...Rubber bush (cylindrical elastic body)
.

Claims (1)

[Scope of utility model registration request] The lubricating oil scraped up by the transmission gear is used to lubricate the extension housing rear push and/or speedometer gear etc. using a press-molded oil feeder installed between the extension housing and the intermezzo eight plate or the rear wall of the transmission case. In the gear transmission lubricating mechanism, the rear end of the oil feeder is press-fitted into a mounting hole provided in the extension housing, and the front end of the oil feeder is press-fitted into a mounting hole provided in the extension housing. A lubrication mechanism for a gear transmission, characterized in that the lubrication mechanism is installed by fitting through a cylindrical elastic body into a rearwardly expanding taper hole provided in a plate or a rear wall of a transmission case.