KR970007994B1 - T/m oil device - Google Patents

Abstract

An oil supply device of manual transmission input shaft having an induction means inducing oil scattered to a transmission housing in one place; a piston receiving the oil induced by said induction means; a cam driving means reciprocating said piston by using the rotation of input shaft to pump said received oil; an elastic member making said piston to continuously pump; a cylinder formed inside of a housing in a rear cover which said piston is inserted to; and a guide means being connected to the oil pass formed in said input shaft and guiding oil over a friction part mounted in periphery of said input shaft is disclosed. Thereby, it is possible to sufficiently supply oil to friction parts which various speed gears are mounted, to smoothly lubricate the friction parts.

Description

Oil supply unit of manual transmission input shaft

1 is a cross-sectional view of a manual transmission to which the present invention is applied.

FIG. 2 is a partial cross-sectional view showing the "M" part of FIG. 1 in detail.

3 is a perspective view showing a piston of an oil supply device applied to the present invention.

Figure 4 (a) is a perspective view showing the relationship between the oil guide rib and the piston applied to the present invention, (b) is a cross-sectional view taken along line III-III of FIG.

* Explanation of symbols for main parts of the drawings

1: Input shaft 3: Rear cover

5: oil passage 7: cam

9: cylinder 11: piston

13 elastic member 15 oil guide tube

21: bottom 23: side

25: inlet 27: outlet

29: oil guide rib c: eccentric amount

[Industrial use]

The present invention relates to a vehicle manual transmission, and more particularly, an oil supply apparatus of a manual transmission input shaft for smoothly supplying oil around a bearing equipped with an angular speed gear via an oil passage of an input shaft of a manual transmission. It is about.

[Prior art]

In general, a manual transmission includes an input shaft powered by an engine, and an output shaft which transmits the shifted power to the drive shaft inside the transmission housing, and the shafts are hollow.

The hollows formed on the input and output shafts of these manual transmissions are used as oil passages, and the oil flowing into these oil passages is supplied to the coupling portions of the angular speed gears supported and mounted as bearings on the input shafts and output shafts, forming a lubrication surface. By preventing the seizure of the ring portion, each of the speed gears of the rotating body can be smoothly rotated.

Since the output shaft is mounted in the lower portion of the housing of the transmission, it is always immersed in oil, so that no oil supply means is required to supply oil to the oil passage of the output shaft; Since the input shaft is not always submerged in oil, a separate oil supply means is required to supply oil to the oil passage of the input shaft.

For this purpose, the oil supply of the general manual transmission input shaft provides one end of the oil guide for supplying oil to the inlet of the hollow oil passage formed in the input shaft of the transmission, and the other end of the oil guide is mounted inside the rear cover. The guide collects the oil splashing as the speed gears in each speed rotate and feeds it to the oil passage inside the input shaft.

The oil guide configured as described above collects oil splashed by the rotation of each speed change gear by the rotation of the engine in one direction and also guides and supplies an oil passage formed inside the input shaft of the transmission.

[Problem to solve by the present invention]

However, the oil guide of the input shaft of the manual transmission configured as described above does not rotate the 5-speed gear located near the rear cover according to the number of revolutions of the engine, or when the engine is rotated at low speed, the amount of oil splashed is small. There is a possibility that sufficient oil may not be supplied into the formed oil passage so that lubrication around the bearings supporting each of the speed change gears may not be sufficiently lubricated, causing squeeze around the bearings.

The present invention has been made in order to solve the above problems, an object of the present invention is to smoothly rotate the speed gear of the rotating body by supplying sufficient oil to the friction portion supported by the respective speed gears to the input shaft of the transmission It is possible to provide an oil supply device of a manual transmission to prevent seizure of the friction part.

[Means to solve the problem]

In order to realize this, the oil supply apparatus of the manual transmission input shaft according to the present invention includes an induction means for guiding oil scattered in the transmission housing to one place; Piston which temporarily receives the oil guide | induced by this guide means; Cam drive means for pumping oil contained therein by reciprocating the piston using rotation of an input shaft; An elastic member for allowing the piston to be pumped by the cam drive means to be pumped continuously; A cylinder formed inside the housing of the rear cover into which the piston is inserted; And a guiding means for guiding oil so that the pumped oil can be supplied to the friction portion installed around the input shaft by connecting the oil passage formed on the input shaft.

The oil inducing means is characterized in that it is extended and bent in at least two or more outward directions.

The piston has a bottom face which is subjected to a linear reciprocating force to deliver oil by the force of the rotational force of the cam driving means and the grip force of the elastic member against it, and the piston to draw oil when the piston is withdrawn from the cylinder. It includes an inlet formed by cutting the side portion, and a discharge port formed in an open state facing the bottom surface to discharge oil.

[Action]

The oil supply device of the input shaft of the manual transmission configured as described above is configured to linearly reciprocate the piston built in the cylinder while the cam driving means mounted on the input shaft that rotates with the engine is driven into the outlet of the piston. It is fed to the inside of the oil passage, which is the hollow part of the input shaft, via the guide means, and is supplied to the friction part.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

EXAMPLE

FIG. 1 is a cross-sectional view of a transmission to which the present invention is applied and is adapted to an input shaft 1 that is rotated by a driving force of an engine (not shown), and to a shifting action of respective speed change subscriptions g under rotation of the input shaft 1. The output shaft 2 which produces the output shifted by this is mounted in the transmission housing h.

These input and output shafts 1 and 2 are isolated from the outside by a rear cover 3 provided at the side end of the transmission housing h. On one side of the rear cover 3, an oil passage 5 of the input shaft 1 is provided. An input shaft oil supply device (M) for supplying oil is provided.

FIG. 2 is a partial sectional view showing the input shaft oil supply device M in detail, and includes a cam driving means mounted to the input shaft 1 to rotate under the driving force of an engine (not shown).

The input shaft 1 is provided with a hollow oil passage 5, and a cam 7 of a cam driving means for pumping oil is mounted at a side end thereof so as to rotate together with the input shaft 1.

And the cylinder (9) for pumping the oil is provided on one side of the rear cover (3), and the piston (9) is built in the cylinder (9), the piston 11 is one end of the input shaft (1) The linear force due to the rotational force of the cam (7) mounted on the opposite side and provided by the holding force of the elastic member 13 built in the piston (11) is provided to be able to move straight reciprocating inside the cylinder (9).

The piston 11 is not detached from the cylinder 9 when drawn out of the cylinder 9 to the maximum, and the piston 11 reaches the maximum inside the cylinder 9 while receiving the holding force of the elastic member 13. The eccentric amount c of the cam 7 corresponds to the operable stroke length of the piston 11 relative to the cylinder 9 so that the cam 7 can rotate smoothly without interference with the piston 11 when inserted. Decide to make it possible.

As described above, the piston formed in the rear cover 3 has a piston 11 provided in the operating region of the cam 7 while the input shaft 1, which is driven by the engine, rotates together with the cam 7 mounted at one end thereof. The linear reciprocating operation inside 9) discharges the oil in the piston 11 out of the cylinder 9 and supplies it to the oil guide tube 15 of the guide means connected to the tip of the cylinder 9.

The front end of the cylinder (9) is fastening means and one end (15 ') of the oil guide pipe (15) for supplying the oil conveyed by the linear reciprocating motion of the piston (11) to the oil passage (5) of the input shaft (1) It is fastened in a sealed state by.

The fastening means can be fastened by various methods such as union or welding, but in this embodiment, the screw part 17 formed on the tip of the cylinder 9 and screwed thereto are easily connected to each other to facilitate disassembly and coupling. The cap nut 19 is illustrated.

The oil guide pipe 15 of the oil guide means, to which the one side 15 'is fixed by the cap nut 19, is piped out of the rear cover 3, and penetrates the other side 3' of the rear cover 3, Insert the other side 15 "into the oil passage 5 of the input shaft 1.

The other side 3 'of the rear cover 3, through which the oil guide tube 15 passes, provides a hollow bolt 19' so that the oil guide tube 15 can be stably fixed. The oil guide tube 15 penetrates into the hollow portion 19 '.

And the diameter (d) of the other side 15 "of the oil guide pipe 15 is formed smaller than the diameter (D) of the oil passage 5 of the input shaft (1), to the operation of the rotating input shaft (1) The oil guide tube 15 supplies oil smoothly without interference.

Thus, in this embodiment, the other side 15 "of the oil guide tube 15 is to supply oil only to the oil passage 5 of the input shaft 1, the other side 15 of the oil guide tube 15 May be fed to other shafts which branch off to form an oil passage (not shown) which is a hollow part.

As shown in FIG. 3, the piston 11 includes a bottom surface 21 and a side portion 23 formed perpendicular to the bottom surface 21. The bottom surface 21 is formed by the rotational force of the cam 7 and is opposed to the bottom surface 21. Under the force of the linear reciprocating motion to discharge oil by the holding force of the elastic member 13, the side portion 23 guides the reciprocating linear reciprocating operation of the piston 11 withdrawing and inserting from the cylinder 9.

In addition, the side portion 23 of the piston 11 has an inlet port 25 cut in such that oil splashed by rotation of a speed gear (not shown) and an oil in the piston 11 are opposed to the bottom surface 21. An outlet 27 is formed to be open to the oil guide pipe 15 so as to be discharged.

And when the piston 11 is pulled out from the cylinder 11, in order to guide the oil which splashes while the input / output shaft (1) of a transmission rotates to the inside of the piston 11, FIG. As shown in b), one side of the rear cover 3 is provided to provide an oil guiding rib 29 which is an oil guiding means upwardly of the inlet 25.

The oil guide rib 28 is preferably formed so as to secure an expanded space bent two or more times upwards on both sides of the inlet port 25 of the piston 11 in order to guide the oil more inflow. .

The oil guide rib 29 is preferably formed in a shape similar to that of the side 23 of the piston 11 so as to reliably guide the oil to be guided into the piston 11.

In the oil supply device of the manual transmission input shaft configured as described above, the cam 7 rotates in response to the rotational force of the engine, thereby being supported by the elastic member 13 in the cylinder 9 formed on one side of the rear cover 3. The built-in piston 11 is reciprocated linearly.

By the reciprocating linear operation of the piston 11, the oil guided by the oil guide rib 29 is supplied to the oil passage 5 of the input shaft 1 via the oil guide pipe 15, so that each speed change gear Are sufficiently supplied to the friction portion supported by the bearing.

[Effects of the Invention]

As described above, the oil supply device of the input shaft of the manual transmission according to the present invention pumps oil by a cam driving means and supplies oil into the oil passage, which is a hollow part of the input shaft, by means of a guide means, to the friction part equipped with the angular speed gear. Since sufficient oil can be supplied, the friction portion can be smoothly lubricated to prevent seizure of the friction portion.

Claims (3)

Guide means for guiding oil scattered on the transmission housing to one place; A piston for temporarily accommodating oil guided by the inducing means, comprising: cam driving means for pumping oil contained therein by reciprocating the piston using rotation of an input shaft; An elastic member allowing the piston to be pumped by the cam drive means to be pumped continuously; A cylinder formed inside the housing of the rear cover into which the piston is inserted; And a guiding means for guiding oil so that the pumped oil can be supplied to the friction portion installed around the input shaft by connecting the oil passage formed on the input shaft. The oil supply device of a manual transmission input shaft according to claim 1, wherein the induction means extends and bends outward at least two or more times. 2. The piston according to claim 1, wherein the piston has a bottom face which is subjected to a linear reciprocating force to discharge oil by a force of rotational force of the cam driving means and a gripping force of an elastic member opposed thereto, and oil when the piston is withdrawn from the cylinder. An oil supply apparatus of a manual transmission input shaft including an inlet formed by cutting the side of the piston so as to inflow, and an outlet configured to open oil to face the bottom.