JP2605710Y2 - Transmission lubrication system - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a transmission lubrication device.

[0002]

2. Description of the Related Art In addition to a conventional type having a cover on the upper surface of a case as a vehicle transmission, a pot type case in which a case is divided into front and rear portions and a gear and the like are assembled in a rear case together with a front case from the front in a rear case. Is known.
No.).

[0003]

By the way, in such a pot type, since the weir for partitioning the case bottom from front to back is limited to a height that does not interfere with the gear at the time of assembly, the lubricating oil inside the case on an uphill road or the like is reduced. There was a concern that good lubrication performance would be impaired due to insufficient lubrication of the lubricating oil on the counter drive gear side due to easy concentration behind.

The purpose of the present invention is to provide an effective solution to such a problem.

[0005]

[Means for solving the problem] Therefore, the case is moved back and forth.
And a gear on the processing surface of the front case.
The gears etc. are attached from the front to the cylindrical rear
And attach the front case to the rear case
Assembled by, in transmission of the pot-shaped case, a gear on the processed surface of the front case
A dam that attaches a cover to cover the lower side of the counter drive gear and defines an oil reservoir that opens upward inside the counter drive gear, and a weir that partitions the bottom part back and forth on the inner surface of the rear case ;
A gutter that is positioned in front of the gutter and gently slopes down so as to capture the lubricating oil of the counter gear and guide the lubricating oil to above the gear case , and lubricate the lubricating oil from the outlet opening at the bottom of the gutter. A guide that receives and naturally flows into the oil sump extends to the gear cover.

[0006]

[Function] Partitions the bottom of the case back and forth in the case
The counter gear located in front of the weir (of course, the counter
The lubricating oil scooped up by the drive gear (including the drive gear) is caught by the gutter on the inner surface of the rear case, flows toward the counter drive gear, and flows down from the outlet of the gutter to the oil reservoir in the gear cover via the guide. Therefore, even on an uphill road or the like , a sufficient amount of oil is held in the gear cover, so that the peripheral portion of the counter drive gear can be satisfactorily lubricated with the scraping oil of the counter drive gear. The gutter is
Because it is located in front of the weir,
It hardly catches up lubricating oil, such as downhill roads
At the bottom of the case the lubricating oil runs short behind the weir
Can also be prevented.

[0007]

1 to 4, reference numeral 1 denotes a pot-type case transmission, and a case 2 is divided into a front part and a rear part. When assembly of gears and the like to the front case 3 is completed, the gears and the like are moved forward. From the front, and is integrated by connecting the front case 3 to the front surface thereof with bolts.

A gear cover 6 is provided on the front case 3 side as an oil reservoir that covers the lower side of the counter drive gear 5 and opens upward inside the counter drive gear 5. As shown in FIGS. 5 and 6, the gear cover 6 is formed in a semi-cylindrical shape with a lid 7 that closes on one side, and is bolted to the processing surface of the front case 3 at both ends of the side plate 8 via brackets 9 on the opening side. You. The plate 8 has a leg 10 formed substantially at the center of the lower surface thereof, and is sandwiched between the front case 3 and the rear case 4 to be supported away from the bottom of the case 2.

One end of the plate 8 receives a lubricating oil from a gutter 11 to be described later and naturally guides the oil into the oil reservoir.
Is extended. A flange-shaped opening edge 13 is formed on the front side of the plate 8, and a seal 1 for preventing the lubricating oil inside the cover 6 from flowing to the rear case 4 side is formed on the edge 13.
4 is attached.

On the inner surface of the rear case 4, there is provided a gutter 11 (which extends forward and backward facing the rotation direction of the counter gear), which catches the lubricating oil which is lifted up by the counter gear and gently slopes down above the gear cover 6. The gutter 11 is integrally formed at the time of casting the rear case 3, and a lubricating oil outlet 15 opening inside the guide 12 is provided at the lowermost portion. Reference numeral 16 denotes a weir that partitions the bottom of the case 2 back and forth, and reference numeral 17 denotes an oil pump for forced lubrication driven by rotation of a counter shaft. The lubricating oil is supplied to an oil gallery to a main gear that idles on the main shaft.

With such a configuration, the lubricating oil scooped up by the counter gear inside the case 2 is caught by the gutter 11 on the inner surface of the rear case 3 and flows to the counter drive gear 5 side. And flows down to the oil reservoir in the gear cover 6. Therefore, a sufficient amount of oil is always held in the gear cover 6, so that the surrounding area can be satisfactorily lubricated with the oil scraped up by the counter drive gear 5 even on an uphill road.

In this case, the gear cover 6 is attached to the front case 3 at the semi-cylindrical opening side, so that the leg piece 10 supporting the center of the lower surface of the cover 6 without being bothered by the interference with the counter drive gear 5 is also provided. Since it only has to be sandwiched between the front case 3 and the rear case 4, it can be easily assembled to the pot type case. The gear cover 6 itself is also supported by the leg pieces 10 so that the case 2
Since it is sufficient to use a simple semi-cylindrical shape instead of a complicated shape along the bottom portion, the processing cost is also advantageous.

[0013]

[Effect of the invention] In short, according to the invention, the case
And the front and rear surfaces of the front case
Gears etc., and the gears etc.
Put it in the rear case and connect the front case to the rear case.
Processed surface of front case in pot-type case transmission assembled by combining
A gear cover to cover the underside of the counter drive gear and define an oil reservoir that opens upward inside
While, partitioning around the bottom inside surface of the rear case
A weir and a gutter that is located in front of the gutter and gently slopes down so as to capture the lubricating oil of the counter gear and guide it upward of the gear case are provided . The gear cover has a guide that receives lubricating oil and naturally flows down to the oil sump, so that a sufficient amount of oil is always maintained in the gear cover. Lubrication can be performed well. Therefore, the case bottom
The height of the weir that separates the front and rear
The effect that reliability can be improved is obtained .

[Brief description of the drawings]

FIG. 1 is a partial sectional view of a transmission showing an embodiment of the present invention.

FIG. 2 is a mounting state diagram of a gear cover.

FIG. 3 is a partial front view of the rear case viewed from an opening side.

FIG. 4 is a sectional view taken along line AA of FIG.

FIG. 5 is a front view of the gear cover.

FIG. 6 is a sectional view taken along line BB of FIG.

[Explanation of symbols]

 2 Case 3 Front case 4 Rear case 5 Counter drive gear 6 Gear cover 8 Side plate 9 Bracket 10 Leg piece 11 Gutter 12 Guide 14 Seal 15 Outlet

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F16H 57/00-57/04

Claims (1)

(57) [Scope of request for utility model registration] The case is divided into front and rear parts, and
Attach gears to the machining surface of the
The front case into the cylindrical rear case from the front,
Is assembled by joining the
That, in the transmission of the pot-shaped case, off
While defining the sump opening upward the inner with the processing surface of Rontokesu attach the gear cover covering the lower side of the counter <br/> motor drive gear, its the inner surface of the rear case
Provided in the weir partitioning the bottom back and forth, the gutter is located to slowly to direct to capture Oyster raise lubricant counter <br/> Tagiya upward of the gear case down slope in front, respectively
That together, trough lubrication system for transmissions characterized by being extended in gear cover lubricating oil receiving and guide for natural flow to the sump from the outlet opening to the bottom of.