KR0145679B1 - Transmission lubrication structure - Google Patents

Abstract

The receiving plate 22 extending to the vicinity of the ring gear 28 of the differential 27 in the oil passage 3 is provided, and the lubricant oil received from the upper surface of the receiving plate 22 is transferred to the passage 31 of the inclined passage 23. (32) is supplied to the first shaft (1) and the second shaft (2), while the lubricating oil received from the lower surface of the receiving plate (22) is the groove (33b) of the deflection plate (29) and the clutch case (33). In the transmission which guides the bearing 12 to the bearing 20 at the same time, and guides the bearing 12 to the inclined plate 33a provided in the clutch case 33, the oil level of the lubricating oil is lowered so that the first shaft 1 and Even if the amount of lubricating oil pulled up by the gear of the second shaft 2 is small, the amount of lubricating oil supplied to each part of the transmission can be sufficiently secured and the lubrication structure of the transmission can be smoothly lubricated.

Description

Lubrication Structure of Transmission

1 is a horizontal sectional view showing an internal structure of a transmission according to an embodiment of the present invention.

2 is a longitudinal sectional view showing the internal structure of the transmission.

3 is an arrow of FIG. 1 showing the internal structure of the transmission. Side view seen from the A direction.

4 is a cross-sectional view taken along the line B-B of FIG. 1 showing the shape of the lubrication flow path.

* Explanation of symbols for main parts of the drawings

1: Main axis (first axis) 2: Sub axis (second axis)

3: Oil passage (lubricating oil introduction means) 12: Bearing of the spindle

20: bearing of sub shaft 22: receiving part

27: differential 28: ring gear (differential gear)

29: deflection plate (deflection means) 30: partition portion

30a: Communication part 31, 32: Euro

31a, 31b, 32b: Supply port 33: Clutch case (case)

33a: sloped plate 33b: home

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubrication structure of a transmission in which lubricating oil pulled up by differential ring gears is directed to the transmission side to provide lubrication of the transmission.

In a transmission mounted on a vehicle, lubricating oil drawn by differential ring gears is usually drawn to the transmission side to perform lubrication.

For example, Japanese Patent Application Laid-Open No. 61-40552 discloses a configuration in which a lubricated oil is led to a bearing supporting a drive shaft by a lubrication flow passage.

According to this structure, the lubricating oil can be supplied also to the above-mentioned bearing which the lubricating oil pulled up by the transmission gear etc. does not directly catch.

In recent years, however, there is a tendency to reduce the amount of lubricating oil due to the fact that the lubricating oil becomes a resistance of gears and the like, and a driving loss occurs.

On the other hand, in the above-described conventional configuration, if the oil level of the lubricating oil is relatively high and the gear near the bearing is immersed in the lubricating oil to some extent, lubrication can be performed with the lubricating oil pulled up by the gear. When the oil level is lowered by reducing the amount of oil, the oil cannot be sufficiently obtained by the pulling up.

Moreover, in the above-described conventional configuration, there is a considerable amount of lubricant that cannot be received in the lubrication flow path because the lubrication flow path is slightly separated from the ring gear.

For this reason, as mentioned above, the quantity of the lubricating oil which the diesel oil lubrication flow path which the oil level of the lubricating oil lowered collect | reduces again becomes smaller, and there arises a problem that it cannot fully secure the flow volume required for lubrication.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and an object thereof is to collect as much lubricant oil as possible from the differential and to sufficiently lubricate even when the oil level of the lubricant oil is low.

The lubrication structure of the transmission according to the present invention is characterized by a differential ring gear toothed to the above-mentioned sub-shaft in a transmission having a main shaft connected to the output shaft of the engine and a sub-axis arranged in parallel with the main shaft to transmit the driving force of the main shaft. The following means are devised as a lubrication structure of a transmission having a lubricating oil introducing means for guiding the lubricating oil drawn up to the far end of the main shaft and the minor shaft.

That is, the lubrication structure of the transmission according to claim 1 extends to the vicinity of the differential ring gear described above in the lubricating oil introducing means, and is provided with a receiving portion receiving the lubricating oil pulled up by the ring gear and lower than the receiving portion. A deflection means is provided on the side to allow the lubricant received from the lower side to flow in the direction of the bearing portion supported by the differential side of the main and sub shafts, and on one side of the plurality of divided flow paths, a gear located between the vicinity of the differential and the end portion. The supply port for supplying lubricant is provided in the other flow path, and the other flow path is provided with a lubrication oil supply port located at an end portion of the flow path.

Moreover, the lubrication structure of the transmission which concerns on Claim 2 is a structure by which the said accommodating part is provided with the inlet opening facing the rotational direction of the differential ring gear.

The lubrication structure of the transmission according to claim 3 is a deflection plate in which the deflection means faces the differential ring gear and is inclined in a direction orthogonal to the axis of the main shaft so as to be integral with the lubrication oil introduction means.

Again, the lubrication structure of the transmission according to claim 4 extends in a direction orthogonal to the axis line of the main shaft at a position opposite to the deflection plate and the main shaft in the axial direction, and is pulled up by the differential ring gear, and by the deflection plate. The inclined plate which supplies the deflected lubricant to the bearing which supports the main shaft toward the differential from the upper surface is provided.

According to the structure of Claims 1, 2, and 3, the lubricating oil pulled up by the differential gear can be received by the receiving part and sent to the lubricating oil introducing means, and the flow rate provided to the lubrication can be increased. .

Therefore, even when the oil level of lubricating oil falls in a transmission, sufficient flow volume required for lubrication can be ensured.

And the lubricating oil which flows below the accommodating part flows toward the main and minor shaft support bearing part by a biasing means, and the flow volume supplied to the main and minor shaft support bearing part is fully ensured. In addition, since the deflection plate is formed integrally with the lubricating oil introducing means, the lubricating oil can be effectively used without increasing the number of parts.

In addition, according to the configuration of claim 4, the inclined plate is provided, and the lubricating oil pulled up by the differential ring gear and deflected by the deflecting plate also flows to the bearing portion supporting the main shaft on the upper surface, so that the lubricating oil can be used more reliably.

EXAMPLE

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. As shown in FIGS. 1 to 3, the transmission according to the present embodiment has a main shaft 1 which is a first axis directly connected to an output shaft (not shown) and a sub shaft 2 which is a second shaft provided in parallel with the main shaft 1. And an oil passage 3 for introducing lubricating oil into each of the transmissions.

The main shaft 1 is provided with a synchronous device 5, 6 at the end of the rear side and a substantially central portion of the transmission case 4, and at the same time, a plurality of gears 7-10 are fitted outside.

In addition, the lubricating oil supply passage 1a through which the lubricating oil flows is formed inside the main shaft 1, and a plurality of outflow passages 1b communicating with the outside from the lubricating oil supply passage 1a. Are installed at appropriate intervals.

The lubricating oil supply passage 1a is open to the rear side, and a panel 11 is attached to the opening.

The main shaft 1 constituted in this way is freely supported by the shaft bearings 12 and 13.

The secondary shaft 2, which is the second shaft, has a five gear 14, a four gear 15, a three gear 16, a second gear 17 and a first gear 18) is embedded from the outside.

In addition, a lubricating oil supply passage 2a through which lubricating oil flows is formed inside the auxiliary shaft 2, and a plurality of outflow passages 2b, which communicate with the outside from the lubricating oil supply passage 2a,. Are installed at appropriate intervals.

The lubricating oil supply passage 2a is open to the front side, and a panel 19 is attached to this opening.

The subshaft 2 comprised in this way is rotatably supported by the bearing 20,21.

The oil passage 3 as the lubricating oil introduction means has a receiving portion 22 and an inclined passage 23 and is fixed above the subshaft 2.

The accommodating part 22 consists of the reinforcement part 24, the introduction port 25, and the introduction passage 26, and is arrange | positioned in the vicinity of the upper end of the ring gear 28 of the differential 27. As shown in FIG.

The reinforcement part 24 is formed by ribs 24a and 24b which are assembled inclined with respect to the direction flowing from the ring gear 28 of the lubricating oil, and accommodates the violent rotation of the ring gear 28. The rigidity of the part 22 is secured.

The inlet port 25 is an inlet for receiving lubricating oil drawn up by the ring gear 28 and is formed to have a width substantially equal to the width of the ring gear 28.

The introduction passage 26 is provided along the side surface of the reinforcing portion 24 and guides the lubricant oil received from the introduction port 25 to the inclined passage 23.

On the lower end face of the receiving portion 2, a deflection plate 29 inclined with respect to the direction in which the lubricating oil flows to guide the lubricating oil pulled up by the ring gear 28 to the bearing 20 supporting the subshaft 2; Is attached.

The inclined passage 23 extends substantially in parallel with the secondary shaft 2 and is provided so as to be inclined downward from the front side to the rear side.

This inclined passage 23 is divided into two flow passages 31 and 32 by the partitioning portion 30 as shown in FIG.

One end portion of the flow path 31 is connected to the introduction passage 26 of the accommodation portion 22, while the other end portion is opened near the fourth gear 15 at the other end and at the same time, the three gears 16 and 2 Supply ports 31a and 31b are provided near the short-term fish 17, respectively.

In addition, the flow path 32 is opened at the end portion reaching the rear end of the transmission case 4, and a supply port 32a is provided in the vicinity of the fifth gear 14.

In the partitioning part 30, the communication part 30a is formed in the position which shifted slightly to the back side from the boundary part of the introduction passage 26 and the flow path 31. As shown in FIG.

This communication part 30a makes the lubricating oil which flowed into the flow path 31 also flow in the flow path 32. As shown in FIG.

Moreover, although the communicating part 30a may be formed other than the above-mentioned position, it is preferable to form in the position shifted from the said boundary part, in order to prevent lubricating oil from flowing into the direct flow path 32 from the introduction passage 26 by the force.

By the way, the transmission case 4 is formed with the communication path 4a which connects the opening part end part of the said flow path 31, and the lubricating oil supply path 1a of the main shaft 1. As shown in FIG.

In addition, the front side of the transmission is covered with the clutch case 33, and the bearing 12 for supporting the main shaft 1 from the vicinity of the upper end of the ring gear 28 is located at the portion of the clutch case 33 that leads to the differential 27. The inclined plate 33a reaching the vicinity is provided.

Said accommodating part 22 is extended to this inclination plate 33a side, and guides the lubricating oil which flows through the lower surface side of the accommodating part 22 to the inclination plate 33a side.

In addition, the clutch case 33 is provided with a groove 33b in the bearing 20 shaft, and the lubricating oil can be distributed.

In the above-described configuration, the lubricating oil pulled up by the ring gear 28 is accommodated in the upper surface side inlet 25 of the accommodating portion 22 and is also received in the lower surface side of the accommodating portion 22.

It flows into the flow paths 31 and 32 through the introduction passage 26 of the lubricating oil received from the inlet 25 of the accommodating part 22.

The lubricating oil flowing into the flow path 31 flows out from the supply ports 31a and 31b, is supplied to the third gear 16 and the second gear 17, and simultaneously flows out from the end of the opening to provide the bearing 21 and the fourth gear. Supplied to (15).

Moreover, the lubricating oil which flows into the flow path 32 flows out from the supply port 32a, is supplied to the 5th gear 14, and flows out from the end of an opening.

The lubricating oil flows into the lubricating oil supply passage 1a of the main shaft 1 through the communication passage 4a of the transmission case 4 and is provided on the main shaft 1 through the outflow passage 1b (5) ( 6) or gears (7)-(10) and bearings (13).

On the other hand, the direction in which the lubricating oil which flows to the lower surface side of the accommodating part 22 is changed by the deflection plate 29, and goes to the bearing 20 direction.

This lubricating oil flows along the groove 33b of the clutch case 33 and is supplied to the bearing 20, and is collected by the panel 19 and flows to the lubricating oil supply passage 2a of the secondary shaft 2, not shown. -2 month journal, etc.

In addition, the lubricating oil which has not been changed by the deflection plate 29 and flows from the accommodation portion 22 as it is is guided to the main shaft 1 along the inclined plate 33a and supplied to the bearing 12.

In addition, the lubricant flowing in the deflection plate 29 and the lubricant flowing straight from the receiving portion 22 are partially joined, but as shown in FIG. 3, the lubricant guided to the main shaft 1 side is lower than the inclined plate 33a. While the lubricant flows along the end face, the lubricating oil guided to the sub-shaft 2 side is in contact with the lower side of the deflection plate 29 so as to change the flow direction, and the influence of the above merging is small because the flow heights are different.

As described above, in the structure of this embodiment, the lubricating oil pulled up by the ring gear 28 of the differential 27 by the oil passage 3 having the accommodating portion 22 is received from the upper and lower surfaces of the accommodating portion 22. It is possible to collect lubricating oil that has been scattered conventionally.

In addition, the lubricant oil collected from the upper surface of the accommodating portion 22 is supplied to one end of the main shaft 1 and the sub shaft 2 by the flow paths 31 and 32, while the lubricant collected from the lower surface of the accommodating portion 22 is clutched. The inclined plate 34a or the groove 33b of the case 33 can also supply the other ends of the main shaft 1 and the sub shaft 2.

Thus, according to this embodiment, the lubricating oil can be supplied to the urea portions of the main shaft 1 and the sub shaft 2 so that the amount of lubricating oil can be reduced to ensure sufficient flow rate for lubrication of each part of the transmission even when the oil level is lowered. There is a number.

As described above, in the lubrication structure of the transmission according to Claims 1, 2 and 3 of the present invention, an accommodation portion receiving the lubricating oil extended by the ring gear and extending to the vicinity of the differential ring gear is provided in the lubricating oil introducing means. The lubricating oil drawn up by the above-mentioned ring gear can be sent to the lubricating oil introduction means in a large amount by the receiving portion, and the flow rate provided to the lubrication can be increased, and even if the oil level of the lubricating oil is reduced, The effect that it can fully ensure is shown. A supply port for supplying lubricant to a gear located between the differential and the end is provided on one side of the plurality of divided flow paths, and a lubricant supply port located on the other end of the flow path is located at the end of the flow path. Is installed so that lubricant can be effectively supplied to each gear.

In addition, a biasing means for flowing the lubricant oil received from the lower side of the accommodating portion toward the main and minor shaft bearing bearing portions supporting the main and minor shafts from the side close to the differential is provided. Since the amount of lubricating oil supplied to the bearing is sufficiently secured, even if the oil level decreases and the lubricating oil cannot be pulled up sufficiently, lubrication of the bearing for supporting the main and minor shafts can be performed smoothly. Since it is formed integrally with, the lubricating oil can be effectively used without increasing the number of parts.

Further, the lubrication structure of the transmission according to claim 4 extends in a direction orthogonal to the axis line of the main shaft at a position opposite to the deflection plate and the main shaft 1 in the axial direction, and is pulled up by the differential ring gear. It is a structure which provided the inclination plate which supplies the lubricating oil deflected by the deflection plate to the bearing which supports the main shaft in the upper side on the upper surface in the upper surface.

As a result, the lubricating oil received from the lower side of the accommodating part flows from the accommodating part along the casing of the transmission to the main shaft supporting bearing side, and the amount of lubricating oil is sufficiently secured.

In addition, when such a lubrication structure is adopted, the oil surface is lowered, and even if the gear of the main shaft cannot pull up the lubricating oil sufficiently, the bearing of the main shaft can be smoothly lubricated.

Claims (4)

In a transmission having a main shaft (1) connected to the output shaft of the engine and a sub shaft (2) disposed in parallel with the main shaft and transmitting a driving force of the main shaft, the differential (27) engaged with the sub shaft (2) is engaged. The differential introduction means (oil passage) 3 formed along the main shaft with the end side lowered so that the lubricating oil pulled by the ring gear 28 is led from the main shaft and the minor shaft differential 27 to the far end. And a receiving portion 22 and the lubricating oil introducing means which extend to the lubricating oil introducing means 3 to the ring gear 28 of the differential 27 and receive the lubricating oil drawn up by the ring gear on its upper surface. On the lower side of the diaphragm 30 and the accommodating portion 22 which are divided into a plurality of flow paths in a direction orthogonal to the main shaft from the lower side, the lubricant received from the lower side is different from the differential side of the main shaft or the minor shaft. A deflection means 29 is provided for inducing the base to flow in the direction of the bearing parts 12 and 19, and one side 31 of the plurality of divided flow paths is located between the differential and the end of the gear 15, Supply ports 31a and 31b for supplying lubricating oil are provided in the 16 and 17, and the other oil passage 32 is provided with a lubricating oil supply hole located closer to the end than the end of the one oil passage 31. Lubrication structure of the transmission, characterized in that. 2. The lubrication structure of a transmission according to claim 1, wherein said receiving portion (22) is provided with an inlet (25) which is opened facing the rotational direction of said differential ring gear. 2. The deflection plate (29) according to claim 1, wherein the deflection means (29) faces the ring gear of the differential and is inclined in a direction orthogonal to the axis of the main shaft (1) so as to be integral with the lubricating oil introduction means. Lubrication structure of the transmission, characterized in that. The deflection plate (29) according to claim 3, wherein the deflection plate (29) extends in a direction orthogonal to the axis line of the main axis at an opposite position in the axial direction of the main axis (1) and is pulled up by the differential ring gear to the deflection plate. The lubrication structure of the transmission characterized in that an inclined plate (33a) is provided for supplying the lubricating oil deflected by the upper surface to a bearing (12) supporting the main shaft (1) closer to the differential.