JPH0633246Y2 - Lubricant induction device for transfer - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a lubricating oil guide device for a transfer, and in particular, a sufficient amount of lubricating oil is provided in the inner part of the output shaft supporting body for supporting the output shaft of the transformer. The present invention relates to a lubricating oil induction device of a transfer capable of inducing.

[Conventional technology]

The transfer for distributing the driving force of the internal combustion engine is provided in the power transmission system as shown in FIG. 4, for example. The driving force of the internal combustion engine (not shown) is converted into a desired torque / rotational speed by the transmission 2 and taken out, and is transmitted to the drive axles 6 and 6 via the final reduction gear 4 to drive a front wheel (not shown). To do. Further, the driving force extracted from the transmission 2 is distributed by the transfer 8 and transmitted from the propulsion shaft 10 to the rear drive axles 14 and 14 via the rear final reduction gear 12 to drive a rear wheel (not shown).

As described above, the transfer 8 that distributes the driving force of the internal combustion engine pivotally supports the input shaft 18 and the output shaft 20 in the main body 16. The main body 16 includes an input shaft shaft support 22 and an output shaft support 24. The input shaft shaft support 22 pivotally supports the input shaft 18 by an input shaft first bearing 26 and an input shaft second bearing 28. Further, the output shaft shaft support 24 supports the output shaft 20 by the output shaft first bearing 30 and the output shaft second bearing 32. On the input shaft 18, a driven gear 36 that meshes with the front final reduction gear 34 of the front final reduction gear 4, which is a drive gear, is attached to one end side, and an input gear 38 is attached to the other end side. There is. An output gear 40 that meshes with the input gear 38 is attached to one end of the output shaft 20, and a connector 42 that connects the propulsion shaft 10 is attached to the other end of the output shaft 20 outside the output shaft support 24. Has been.

The output shaft first bearing 30 and the output shaft second bearing 3 of the output shaft support 24 that supports the output shaft 20 of the transfer 8 as described above.
To lubricate 2 and 2, the lubricating oil scraped up by the input gear 38 is guided to the inner part of the output shaft support 24,
Some lubricate the output shaft first bearing 30 and the output shaft second bearing 32.

In addition, as described above, the one that is lubricated by the lubricating oil scraped up by the gears is described in Japanese Utility Model Publication No. 33-12969.
There is one disclosed in the publication. The one disclosed in this publication is
A radial refueling rib is provided on one side face in the tooth width direction of the final reduction drive gear of the final reduction gear, and in the differential gear case in which this final reduction drive gear is mounted on the center side of the final reduction drive gear between the refueling ribs. Is provided with an oil supply hole communicating with. As a result, the lubricating oil scraped up by the oil supply ribs is guided into the differential gear case from the oil supply hole on the center side of the final reduction drive gear to lubricate the differential gear.

[Problems to be solved by the invention]

However, in the conventional lubricating oil guide device for the transfer 8, as described above, the lubricating oil scraped up by the input gear 38 is guided to the inner portion of the output shaft support 24, so that the output shaft first
If the bearing 30 and the output shaft second bearing 32 are lubricated,
Since the output shaft support 24 is located behind the output gear 40, there is a problem that a sufficient amount of lubricating oil cannot be guided to the inner part of the output shaft support 24.

For this reason, the output shaft first bearing 30 and the output shaft second bearing 32 cannot be sufficiently lubricated, and in particular, the output shaft 40 in the inner back portion on the side where the connector 42 for connecting the propulsion shaft 10 is mounted is supported. There is a disadvantage that the second output shaft bearing 32 cannot be satisfactorily lubricated.

[Purpose of device]

Therefore, the purpose of this invention is to guide a sufficient amount of lubricating oil to the inner part of the output shaft supporting the output shaft of the transfer. It is to realize a lubricating oil induction device for a transfer that can satisfactorily lubricate.

[Means for solving problems]

In order to achieve this object, the present invention relates to a lubricating oil guide device for a transfer, which guides lubricating oil to the inner part of an output shaft supporting body for supporting an output shaft of a transfer, and a gear for an output gear attached to the output shaft. A lubricating oil flow generator for generating a lubricating oil flow in the inner direction of the output shaft shaft support by rotation is provided on the back surface of the output gear facing the inner end face of the output shaft support, and the lubricating oil flow generator is provided. A lubricating oil guide portion for guiding the lubricating oil flow generated by the above to the output shaft bearing inside the output shaft support body is provided in the output shaft support body, and the lubricating oil guide portion faces the rear surface of the output gear. A lubricating oil introducing port provided on the inner end surface of the output shaft supporting body and a starting end communicating with the lubricating oil introducing port and a terminal communicating with the output shaft bearing through an annular groove on the inner peripheral surface of the output shaft supporting body. To communicate with the lubricating oil introduction groove and the starting end to this lubricating oil introduction groove The lubricating oil lead-out groove and the lubricating oil lead-out port provided at the inner end surface of the output shaft support body that communicates with the end of the lubricating oil lead-out groove, and the opening area of the lubricating oil lead-in port is It is characterized in that it is formed larger than the opening area.

[Action]

According to the configuration of the present invention, the lubricating oil flow generator provided on the back surface of the output gear causes a lubricating oil flow in the inner direction of the output shaft support body, and this lubricating oil flow is generated by the lubricating oil guide portion. Lubricating oil is introduced from the lubricating oil introduction port of the inner end surface of the support body to the output shaft bearing in the inner part of the output shaft support body through the annular groove of the inner peripheral surface for lubrication. The lubricating oil that lubricates the output shaft bearing flows out from the lubricating oil outlet through the lubricating oil outlet groove. As a result, the lubricating oil guide portion forms a flow of lubricating oil, so that a sufficient amount of lubricating oil can be guided to the inner part of the output shaft support body.

〔Example〕

 Next, an embodiment of the present invention will be described in detail with reference to the drawings.

1 to 3 show an embodiment of this invention.

As shown in FIG. 1, the transfer 8 for distributing the driving force
Supports an input shaft 18 and an output shaft 20 in the main body 16. The main body 16 includes an input shaft shaft support 22 and an output shaft shaft support 2
4 and. The input shaft shaft support 22 is the input shaft first bearing 2
The input shaft 18 is axially supported by 6 and the second input shaft bearing 28. Further, the output shaft shaft support 24 supports the output shaft 20 by the output shaft first bearing 30 and the output shaft second bearing 32. To the input shaft 18, a driven gear 36 that meshes with the front final reduction gear 34 of the front final reduction gear 4, which is a drive gear, is attached to one end side, and an input gear 38 is attached to the other end side. There is. An output gear 40 that meshes with the input gear 38 is attached to one end of the output shaft 20, and a connector 42 that connects the propulsion shaft 10 is attached to the other end of the output shaft 20 outside the output shaft support 24. Has been.

As a result, the transfer 8 causes the driven gear 36 that meshes with the front final reduction gear 34 of the front final reduction gear 4 as a drive gear.
The driving force extracted from the transmission 2 is distributed to the input shaft 18 and input, and is output from the input gear 38 to the output shaft 20 via the output gear 40. The driving force output from the output shaft 20 is transmitted from the propulsion shaft 10 connected by the connector 42 to the rear drive gears 14 and 14 via the rear final reduction gear 12, and drives the rear wheels (not shown).

The output shaft 2 of the transfer 6 for distributing the driving force in this way
As shown in FIGS. 1 and 2, the output gear 40 mounted at 0 is attached to the rear surface 48 facing the inner end surface 56 of the output shaft support 24, and is rotated to the inner rear side of the output shaft support 24. A lubricating oil flow generator 44 is provided to generate a lubricating oil flow in the partial direction. The lubricating oil flow generator 44 is formed in the shape of a dam with a trapezoidal cross section having an inclined surface 46 inclined with respect to the rotation direction A of the output shaft 20. The dam-like lubricating oil flow generator 44 having a trapezoidal cross section is bent along the annular flat surface portion 50 and the annular curved surface portion 52 of the back surface 48 of the output gear 40, and with respect to the rotation center C of the output shaft 20. Are arranged in the radial direction.

Lubricating oil that guides the lubricating oil flow generated by the lubricating oil flow generator 44 to the output shaft first bearing 30 and the output shaft second bearing 32, which are the output shaft bearings in the inner depth of the output shaft support 24. The guide portion 54 is provided on the output shaft support 24. As shown in FIG. 3, the lubricating oil guide portion 54 includes a lubricating oil introduction port 58 provided on the inner end surface 56 of the output shaft support 24 facing the rear surface 48 of the output gear 40, and the lubricating oil introduction port 58. Through the annular groove 62 in the inner peripheral surface 60 of the output shaft support 24, and the end communication between the output shaft first bearing 30 and the output shaft second bearing 32 in the inner depth of the output shaft support 24. A lubricating oil introduction groove 64,
A lubricating oil lead-out groove 66 communicating with the lubricating oil introduction groove 64 at the starting end
And a lubricating oil outlet port 68 provided on the inner end surface 56 of the output shaft support 24 communicating with the end of the lubricating oil outlet groove 66. The opening area of the lubricating oil introducing port 58 of the lubricating oil guiding portion 54 is formed larger than the opening area of the lubricating oil outlet port 68.

Next, the operation will be described.

The driving force of the internal combustion engine (not shown) is distributed and input to the input shaft 18 of the transfer 8 via the transmission 2 by the driven gear 36 that uses the front final reduction gear 34 of the front final reduction gear 4 as a driving gear. It is transmitted from the input gear 38 to the output shaft 20 via the output gear 40.

This driving force is transmitted to rotate the output gear 40, and the lubricating oil flow generator 44 provided on the rear surface 48 of the output gear 40.
Generates a lubricating oil flow in the direction of the inner depth of the output shaft support 24 (direction of arrow B). The lubricating oil flow in the inner depth direction (the direction of arrow B) of the output shaft shaft support 24 is caused by the lubricating oil guiding portion 54 to the output shaft first bearing 30 and the output shaft first position in the inner depth part of the output shaft shaft support 24. The two bearings 32 are guided.

That is, the lubricating oil flow generated by the lubricating oil flow generator 44 toward the inner back portion of the output shaft support 24 (direction of arrow B) flows toward the inner end surface 56 of the output shaft support 24. This lubricating oil flow flows into the lubricating oil introducing groove 64 from the lubricating oil introducing port 58 having an opening area larger than that of the lubricating oil introducing port 68 provided in the inner end surface 56 of the output shaft shaft support 24, and the output shaft shaft Branch 2
4 through the annular groove 62 of the inner peripheral surface 60 of the output shaft shaft support 24
Lubricate by being guided by the output shaft first bearing 30 and the output shaft second bearing 32 in the inner part of the.

The lubricating oil that lubricates the output shaft first bearing 30 and the output shaft second bearing 32 passes through the lubricating oil lead-out groove 66 and the lubricating oil lead-out port 68.
Drained from. As a result, the lubricating oil guide portion 50 forms a flow of lubricating oil from the lubricating oil introduction port 58 to the lubricating oil introduction groove 64, the annular groove 62, the lubricating oil discharge groove 66, and the lubricating oil discharge port 68.

In this way, the rear surface 48 of the output gear 40 of the transfer 8 is
By the lubricating oil flow generator 44 provided on the output shaft support 24
A lubricating oil flow is generated in the inner depth direction (arrow B direction) of the output shaft supporter 2 by the lubricating oil guide portion 54.
4, the output shaft first bearing 30 and the output shaft second bearing 32 in the inner part of 4
Since it is guided to the inner side of the output shaft support 24, a sufficient amount of lubricating oil can be guided to the inner rear part.

Therefore, the output shaft first bearing 30 and the output shaft second bearing 32 in the inner depth portion of the output shaft support 24 can be satisfactorily lubricated. In particular, the output shaft second bearing 32 on the inner back side has conventionally been problematic in that it cannot be satisfactorily lubricated due to a shortage of the amount of lubricating oil. B
Direction) to induce a lubricating oil flow in the output shaft first bearing 30 and the output shaft second bearing 32 by means of the lubricating oil guide portion 54, so that the output shaft second bearing 32 on the inner back side is also favorably formed. It can be lubricated.

In addition, in this embodiment, the induction of the lubricating oil of the transfer is illustrated, but the invention can be also applied to the transmission and the gear device.

[Effect of device]

Thus, according to the present invention, the lubricating oil guide device causes the lubricating oil flow generator provided on the back surface of the output gear of the transfer to generate the lubricating oil flow in the inner direction of the output shaft support. This lubricating oil flow is guided by the lubricating oil guide portion from the lubricating oil inlet provided on the inner end surface of the output shaft support body to the inner part of the output shaft support body through the annular groove on the inner peripheral surface by the lubricating oil introduction groove. Inducted and lubricates the output shaft bearing. The lubricating oil that lubricates the output shaft bearing flows out from the lubricating oil outlet through the lubricating oil outlet groove. In this way, the lubricating oil guide portion forms a flow of lubricating oil from the lubricating oil introduction port, through the lubricating oil introduction groove and the annular groove toward the lubricating oil discharge groove and the lubricating oil discharge port, and the inner part of the output shaft shaft support body A sufficient amount of lubricating oil can be guided to the output shaft bearing of the section. Therefore, this lubricating oil guide device can also satisfactorily lubricate the output shaft bearing in the inner part of the output shaft support.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 to 3 show an embodiment of the present invention, FIG. 1 is a schematic explanatory view of a transfer, FIG. 2 is a rear view of an output gear taken along the line II of FIG. FIG. 3 is an inner end view of the output shaft support member taken along the arrow III in FIG. FIG. 4 is a schematic explanatory diagram of a power transmission system. In the figure, 2 is a transmission, 4 is a front final reduction gear, 8 is a transfer, 10 is a propulsion shaft, 12 is a rear final reduction gear, 16 is a main body, 18 is an input shaft, 20 is an output shaft, 22 is an input shaft. Shaft support, 24 is output shaft support, 30 is output shaft first bearing, 32
Is an output shaft second bearing, 38 is an input gear, 40 is an output gear,
44 is a lubricating oil flow generator, 54 is a lubricating oil guiding portion, 58 is a lubricating oil introducing port, 64 is a lubricating oil introducing groove, 66 is a lubricating oil outlet groove, and 68 is a lubricating oil outlet port.

Claims (1)

[Scope of utility model registration request] 1. A lubricating oil guide device for a transfer, which guides lubricating oil to the inner part of an output shaft supporting body for supporting an output shaft of a transfer, wherein the output shaft is rotated by rotation of an output gear attached to the output shaft. A lubricating oil flow generator for generating a lubricating oil flow in the inner direction of the branch is provided on the back surface of the output gear facing the inner end surface of the output shaft support member, and the lubricating oil generated by the lubricating oil flow generator is provided. A lubricating oil guide portion for guiding the flow to the output shaft bearing at the inner part of the output shaft support body is provided in the output shaft support body, and the lubricating oil guide portion faces the rear surface of the output gear. A lubricating oil introducing port provided on the inner end surface of the body, and a lubricating oil introducing groove communicating with the lubricating oil introducing port at the starting end and through the annular groove on the inner peripheral surface of the output shaft supporting body to the end at the output shaft bearing. The lubricating oil lead-out groove that communicates with the lubricating oil introduction groove at the beginning and this lubricating And a lubricating oil outlet provided on the inner end surface of the output shaft support that communicates with the end of the outlet groove, and the opening area of the lubricating oil inlet is larger than the opening area of the lubricating oil outlet. A lubricating oil induction device for a transfer, which is characterized in that