JP2004052904A - Lubricating oil supply structure for vehicle transmission - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide lubrication supply structure of a transmission for a vehicle which has excellent lubricity, and is expectable for weight reduction of the transmission by reducing lubrication oil stored in the transmission case and reduction of agitation resistance. <P>SOLUTION: In the lubrication supply structure of the transmission for the vehicle, the lubrication oil stored in the transmission case 1 is scattered by a counter shaft 21, the scattered lubrication oil is collected by an oil guide 30 and the lubrication oil is induced to a lubricated part through a lubrication passage 11 provided on a main shaft 10 to lubricate the transmission. A lubrication replenish hole 45 is opened on a bottom part 32 of the oil receiving part 31 of the oil guide 30. The lubrication oil is replenished on the oil receiving part 31 from below through the lubrication replenish hole 45 even at the time of low speed rotation of the counter shaft 21, and sufficient amount of lubrication oil can be supplied into the lubricated part. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a lubricating oil supply structure for a vehicle transmission.
[0002]
[Prior art]
For example, a lubricating oil supply to each part of a manual transmission for a vehicle is performed by a rotating member provided on a counter shaft which is partially driven to rotate under the stationary oil level of the lubricating oil stored in a transmission case. The lubricating oil is scattered, and the scattered lubricating oil adheres to the lubricated parts of the respective parts.
[0003]
However, even if lubricating oil is scattered and supplied from the outer periphery to the lubricated part formed by the rotating body of the needle bearing or the synchromesh mechanism that supports the gear etc. on the main shaft, much lubrication occurs due to the centrifugal force of the rotating body. Oil may be bounced off and insufficient lubrication may be obtained.
[0004]
As a countermeasure, for example, as disclosed in Japanese Utility Model Application Laid-Open No. 5-90024, a gutter-shaped oil guide having an open upper portion is provided in an upper portion of a transmission case, and a rotating member provided on a counter shaft by the oil guide is used. It catches the lubricating oil that has jumped up, guides the collected lubricating oil to an oil reservoir formed between the bearing and the transmission case, and lubricates from the oil reservoir along the axis of the main shaft. There is a lubricating structure for supplying lubricating oil to each lubricated part via an oil passage.
[0005]
[Problems to be solved by the invention]
According to Japanese Utility Model Application Laid-Open No. 5-90024, lubricating oil jumped up by a rotating countershaft is collected by an oil guide and supplied from the inside to each part through a lubricating oil passage formed in a main shaft. In addition, a rotating object such as a needle bearing or a synchromesh mechanism can be efficiently lubricated.
[0006]
However, when the counter shaft rotates at a high speed, a sufficient amount of lubricating oil is scattered by a rotating member provided on the counter shaft, and a sufficient amount of lubricating oil can be collected by an oil guide. There is a concern that the rotation of the lubricating oil provided by the rotating member provided in the vehicle will decrease, and the amount of the lubricating oil collected by the oil guide will decrease due to a decrease in the amount of the lubricating oil.
[0007]
On the other hand, if the amount of lubricating oil in the transmission case is increased in order to ensure the amount of lubricating oil scattered by the rotating member provided on the countershaft, the weight of the vehicle body increases and the stirring resistance due to the lubricating oil around the countershaft etc. Increases, leading to deterioration of fuel efficiency. In addition, the oil temperature rises due to the agitation of the lubricating oil, which increases with high-speed rotation, which leads to deterioration of the lubricating oil, which causes wear and damage to components such as transmission gears. It becomes.
[0008]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention, which has been made in view of the above points, is to provide a vehicle transmission which is excellent in lubricity and can be expected to reduce the weight of the transmission and reduce the stirring resistance by reducing the amount of lubricating oil stored in the transmission case. It is to provide a lubricating oil supply structure.
[0009]
[Means for Solving the Problems]
The lubricating oil supply structure for a vehicle transmission according to claim 1, which achieves the above object, is scattered by a rotating member provided on a rotating shaft that partially rotates in a lubricating oil stored in a transmission case. In a lubricating oil supply structure for a vehicle transmission for collecting the lubricating oil collected by an oil guide and guiding the collected lubricating oil to a lubricated portion to lubricate the oil guide, the oil guide includes a bottom portion and a side edge of the bottom portion. An oil receiving portion having an open side having a side surface portion extending in a direction intersecting the rotation direction of the rotating shaft and projecting upward; and an oil receiving portion formed continuously at an edge of the oil receiving portion. An oil guiding path for guiding the lubricating oil collected in the portion to the lubricated portion, and a lubricating oil supply hole is formed in the bottom of the oil receiving portion.
[0010]
According to the first aspect of the present invention, when the rotating shaft is rotated at a relatively high speed, a sufficient amount of lubricating oil is scattered by the rotating member provided on the rotating shaft and a sufficient amount of the lubricating oil is supplied to the oil receiving portion of the oil guide. The lubricating oil is captured and collected, and a sufficient amount of lubricating oil can be guided to the lubricated portion by the oil guide path. On the other hand, when the rotating shaft is rotating at a relatively low speed, the amount of lubricating oil scattered by the rotating member provided on the rotating shaft is relatively small, and the amount of lubricating oil supplied from above to the oil receiving portion is reduced. Lubricating oil is also introduced from below through a lubricating oil supply hole that opens at the bottom of the receiving part, and is supplied to the oil receiving part. A sufficient amount of lubricating oil is collected in the oil receiving part and sufficient for the lubricated part. An appropriate amount of lubricating oil can be supplied.
[0011]
Therefore, good lubricity of the lubricated portion can be always ensured regardless of whether the rotating shaft is rotating at high speed or at low speed. Accordingly, the amount of lubricating oil stored in the transmission case can be suppressed, the weight of the vehicle body can be reduced, and the agitation resistance of the lubricating oil by the rotating shaft and the rotating member provided on the rotating shaft is reduced, thereby improving fuel efficiency. Can be expected.
[0012]
According to a second aspect of the present invention, in the vehicle lubricating oil supply structure of the first aspect, a plurality of guide ribs projecting along a direction intersecting a rotation direction of the rotation shaft on the bottom portion are provided side by side. A lubricating oil supply hole is provided between the guide ribs.
[0013]
According to the second aspect of the present invention, the lubricating oil collected in the oil receiving portion can be smoothly guided to the oil guiding path by the plurality of guiding ribs arranged in parallel on the bottom portion of the oil receiving portion, and the lubricating oil supply hole is formed. The lubricating oil introduced on the bottom from below can be captured well.
[0014]
According to a third aspect of the present invention, there is provided a lubricating oil supply structure for a vehicular transmission, wherein lubricating oil scattered by a rotating member provided on a countershaft that rotates while being partially submerged in the lubricating oil stored in the transmission case. For vehicles that collect oil by an oil guide and guide the collected lubricating oil to a lubricated part through a lubricating oil passage formed in a main shaft with a lubricating oil inlet opening at the shaft end. In the lubricating oil supply structure for a transmission, the oil guide has a bottom portion and a side portion extending along a side edge of the bottom portion and extending in a direction intersecting the rotation direction of the counter shaft and projecting upward. An oil receiving portion that is opened, a guide tube portion whose tip is inserted into the lubricating oil passage from the lubricating oil inlet and a lubricating oil supply hole is drilled, and is formed continuously with an end edge of the oil receiving portion. In the above oil receiving section The fit was lubricating oil and an oil guide path guiding the lubricating oil supply hole of the guide tube, the lubricant supply hole is characterized in that an opening formed in the bottom portion of the oil receiving portion.
[0015]
According to the third aspect of the present invention, when the counter shaft is rotated at a relatively high speed, such as during high-speed running, a sufficient amount of lubricating oil is scattered by the rotating member provided on the counter shaft, so that the oil guide is rotated. A sufficient amount of lubricating oil is captured and collected in the oil receiving section, and a sufficient amount of lubricating oil can be supplied from the guide pipe section to the lubricating oil passage of the main shaft through the oil guide path. Can be secured. On the other hand, when the counter shaft rotates at a low speed, the amount of lubricating oil scattered by the rotating member provided on the counter shaft is relatively small, and the amount of lubricating oil supplied from above to the oil receiving portion is reduced. It is also introduced from below through a lubricating oil supply hole that opens at the bottom and is replenished on the oil receiving part.A sufficient amount of lubricating oil is collected in the oil receiving part, and is guided from the guide line to the lubricating oil passage of the main shaft. The lubrication of the part to be lubricated can be ensured.
[0016]
Therefore, good lubricity of the lubricated portion can be always ensured regardless of the high speed rotation and the low speed rotation of the counter shaft, and the amount of lubricating oil stored in the transmission case can be reduced, and the weight of the vehicle body can be reduced. In addition, the stirring resistance of the lubricating oil by the countershaft and the rotating member provided on the countershaft is reduced, and an improvement in fuel efficiency can be expected.
[0017]
According to a fourth aspect of the present invention, in the vehicle lubricating oil supply structure according to the third aspect, a plurality of guide ribs projecting along a direction intersecting the rotation direction of the countershaft are provided in parallel on the bottom portion, and the lubrication oil is provided. An oil supply hole is provided between the guide ribs.
[0018]
According to the invention of claim 4, the lubricating oil collected in the oil receiving portion can be smoothly guided to the oil guiding path by the plurality of guiding ribs arranged in parallel on the bottom portion, and also from below through the lubricating oil supply hole. The lubricating oil introduced into the oil receiving portion can be satisfactorily captured.
[0019]
According to a fifth aspect of the present invention, in the vehicle lubricating oil supply structure according to any one of the first to fourth aspects, the oil guide path is a hanging surface portion continuously formed to a bottom edge of the oil receiving portion. And an oil guide portion formed so as to protrude along both side edges and a lower edge of the hanging lower surface portion and having a side edge portion whose leading end abuts against a wall surface of the transmission case and a lower edge portion continuous with the side edge portion. And the wall of the transmission case.
[0020]
According to the fifth aspect of the present invention, the oil guide portion is formed by the hanging surface, the side edge, and the lower edge, and the tip of the side edge and the lower edge contacts the wall surface of the transmission, so that the hollow oil is formed. A taxiway is formed. Therefore, the wall surface of the transmission case also functions as a part of the lubricating oil guide path, so that the oil guide can be made compact and the space occupied by the oil guide in the transmission case can be suppressed.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of a lubricating oil supply structure for a vehicle transmission according to the present invention will be described with reference to the drawings.
[0022]
FIG. 1 is a cross-sectional view of a manual transmission showing a main part of a lubricating oil supply structure. Reference numeral 1 denotes a transmission case in which a rotating shaft of a main shaft 10 and a counter shaft 21 extending in the vehicle longitudinal direction is rotatably supported by bearings 2 and 3 and the like, and is formed in a hollow shape. A drive shaft 22 is rotatably supported in the counter shaft 21 via a needle bearing 23. The countershaft 21 is partially lubricated with bath oil lubricating under the stationary oil level of the lubricating oil in the transmission case 1.
[0023]
The main shaft 10 has a lubricating oil passage 11 having a lubricating oil inlet 11a opened at an axial end thereof, and is formed along the axis thereof. In addition, an ejection hole 11b radially branched from the lubricating oil passage 11 in each part of the main shaft 10. Are drilled. A sleeve 13 is fitted near the rear end of the main shaft 10 in contact with the inner race 2a of the bearing 2, and an inner periphery 15a of a drive gear 15 is fitted around the outer periphery of the sleeve 13 via a needle bearing 14. A gear 15 is rotatably arranged. A lubricating oil passage 13a is formed in the sleeve 13 in correspondence with the spouting hole 11b radially branched from the lubricating oil passage 11 formed in the main shaft 10, and lubricating oil spouted from the spouting hole 11b is lubricated. Is supplied to the needle bearing 14.
[0024]
The drive gear 15 and the main shaft 10 are configured to be able to transmit via a synchromesh mechanism 16. The synchromesh mechanism 16 includes a synchro hub 17, a balk ring 18, a synchro sleeve 19, and the like, which are spline-fitted to the main shaft 10, and selectively extends the synchro sleeve 19 via a shifter fork (not shown). By moving along the direction, the main shaft 10 and the drive gear 15 are coupled so as to be able to transmit power synchronously, or the coupling is released. Since the detailed description of the synchromesh mechanism 16 is not directly related to the present invention, the detailed description is omitted.
[0025]
When the synchro hub 17 is pressed against the inner race 2a of the bearing 2 via the sleeve 13 by the lock nut 20 screwed to the end of the main shaft 10, the sleeve 13, the drive gear 15 and the synchromesh mechanism 16 become main. It is mounted on the shaft 10.
[0026]
On the other hand, a driven gear 25, which is a rotating member that meshes with the drive gear 15, is mounted on the counter shaft 21 while being prevented from rotating by a key 26, and is fixed by a lock nut 27 screwed to the counter shaft 21.
[0027]
Here, in a state where the connection between the main shaft 10 and the drive gear 15 is released by the synchromesh mechanism 17, even if the main shaft 10 is rotationally driven, power is not transmitted to the drive gear 15. On the other hand, when the main shaft 10 and the drive gear 15 are coupled so as to transmit power by the synchromesh mechanism 17, the driven gear 25 meshing with the drive gear 15 is driven to rotate, and the speed is changed according to the gear specifications of the drive gear 15 and the driven gear 25. Then, the counter shaft 21 is rotationally driven.
[0028]
At the shaft end of the main shaft 10, an oil guide 30 made of resin and integrally formed is disposed. As shown in FIG. 2, an overall perspective view, FIG. 3 shows a view taken in the direction of arrow A in FIG. 2, and FIG. 4 shows a sectional view taken along the line II in FIG. Has an arc-shaped cross-section that is gently curved so as to descend as it shifts to both sides, and crosses the rotation direction of the countershaft 21 along a substantially rectangular bottom portion 32 in plan view and both side edges of the bottom portion 32. The sides 33, 34 extending in the direction of movement, and preferably in the direction perpendicular to each other, have a substantially gutter-shaped oil receiving portion 31 projecting upward.
[0029]
A substantially fan-shaped or triangular hanging surface portion 36 hangs down from one end of the oil receiving portion 31, and an upper end extends along each side edge of the hanging surface portion 36, continuing to the ends of the side surfaces 33, 34. A gutter-shaped oil guiding portion 35 having side edge portions 37 and 38 protrudingly formed in the extending direction of the countershaft 21 is formed continuously with the oil receiving portion 31, and the lower ends of the side edge portions 37 and 38 hang down. The surfaces 36 are connected via an arc-shaped lower edge 39 projecting along the lower edge of the surface 36. At the side edge 38, a mounting portion 40 having a mounting hole 41 is formed.
[0030]
The base end of a hollow guiding tube portion 42 whose tip can be fitted into the lubricating oil passage 11 from a lubricating oil inlet 11 a opening at the shaft end of the main shaft 10 is formed continuously below the oil guiding portion 35. One end of the lubricating oil supply hole 43 pierced and penetrated through the guide tube portion 42 is opened through the hanging surface portion 36 and above the lower edge portion 39, and the other end is opened at the tip of the guide tube portion 42. ing.
[0031]
Further, on the upper surface of the bottom portion 32 of the oil receiving portion 31, a plurality of guide ribs 44a extending in a direction intersecting with the rotation direction of the countershaft 21 and preferably extending in a direction perpendicular to the countershaft 21, and in the present embodiment, four guide ribs 44a, 44b, 44c, 44d are juxtaposed, and the end of the relatively short guide rib 44c and the center of the guide rib 44b are formed by a guide rib 44e extending in a direction perpendicular to the guide ribs 44c, 44b and the like. Are linked.
[0032]
Further, a substantially rectangular lubricating oil supply hole 45 extending along the guide ribs 44b and 44c is opened and penetrates the bottom 32 of the oil receiving portion 31 between the guide ribs 44b and 44c.
[0033]
The oil guide 30 thus formed is inserted into the lubricating oil passage 11 from the lubricating oil inlet 11a opening at the shaft end of the main shaft 10, as shown in FIG. The oil receiving portion 31 is located above the synchro sleeve 19 of the synchromesh mechanism 17 with a gap between the synchro sleeve 19 and the upper portion of the transmission case 1, and the side edge portions 37, 38 and the lower edge portion of the oil guide portion 36. 39 are attached to the transmission case 1 with mounting bolts (not shown) inserted into the mounting holes 41 in a state where the respective tips of the 39 abut against the wall surface (not shown) of the transmission case 1 or the like. By attaching the oil guide 30 to the transmission case 1 in this manner, the end surface of the oil receiving portion 31 is formed by the hanging surface portion 36, the side edge portions 37 and 38, the lower edge portion 39 of the oil guide portion 35 and the wall surface of the transmission case 1. A hollow oil guide path 46 is formed from the oil passage to the lubricating oil supply hole 43 formed in the guide pipe portion 42.
[0034]
Since the transmission is housed in the engine room with the rear part protruding into a tunnel formed in the lower part of the passenger compartment, the rear part thereof is downward for the purpose of securing the livability in the passenger compartment. The main shaft 10, the counter shaft 21, the drive shaft 22, and the like are arranged so as to gradually descend as they move rearward.
[0035]
Next, the operation of the lubricating oil supply structure of the thus configured vehicle transmission will be described.
[0036]
When the countershaft 21 is driven to rotate by rotation of the main shaft 10 such as during running, the lubricating oil stored in the transmission case 1 is scraped up and scattered by gears such as a driven gear 25 provided on the countershaft 21, The scattered lubricating oil adheres to the lubricated parts of each part to lubricate.
[0037]
Further, when the counter shaft 21 is driven to rotate at a relatively high speed during high-speed running or the like, a sufficient amount of lubricating oil is scraped up and scattered by gears such as a driven gear 25 provided on the counter shaft 21, and In FIG. 5, a large amount of lubricating oil is scattered as shown by a solid arrow A in the enlarged cross-sectional view taken along the line II-II of FIG. 1 and is sufficiently supplied to the oil receiving portion 31 of the oil guide 30 from above. It is received and captured by the bottom surface 32 and the side surface portion 33 of the receiving portion 31 and collected. The lubricating oil collected in the oil receiving portion 31 is smoothly guided by the opposing side portions 33 and 34 and the respective guiding ribs 44a, 44b, 44c and 44d, and is formed by the oil guiding portion 35 and the wall surface of the transmission case 1. The oil is introduced into the oil guide path 46, and is supplied into the lubricating oil passage 11 formed in the main shaft 10 from the lubricating oil supply hole 43 formed in the guide pipe 42.
[0038]
The lubricating oil supplied into the lubricating oil passage 11 is spouted from the spout holes 11b to the respective parts by the centrifugal force generated in the rotating main shaft 10 to lubricate the lubricated parts. For example, the lubricating oil spouted from the spouting hole 11b lubricates the needle bearing 14, which is the lubricated part, through the lubricating oil passage 13a formed in the sleeve 13, and the lubricating oil lubricating the needle bearing 14 is the drive gear. The lubricating oil flows out from the end of the inner hole 15a and is scattered by the centrifugal force generated by the rotation of the drive gear 15, and further lubricates the balk ring 18 and the synchro sleeve 19 of the synchromesh mechanism 16, which are lubricated portions, from the inside.
[0039]
On the other hand, when the counter shaft 21 is driven to rotate at a relatively low speed during low-speed running or the like, the amount of lubricating oil that is scraped up and scattered by gears such as the driven gear 25 provided on the counter shaft 21 is relatively small. The amount of lubricating oil supplied from above to the oil receiving portion 31 of the oil guide 30 and captured on the oil receiving portion 31 is reduced, as shown by the broken line arrow B in FIG. The lubricating oil is also introduced from above from below through a lubricating oil supply hole 45 that opens in the bottom surface 32 of the base member, is caught by the guide rib 43d, the side surface portion 33, and the like, and is supplied onto the oil receiving portion 31.
[0040]
The lubricating oil collected in the oil receiving portion 31 is guided by the side portions 33 and 34 and the respective guide ribs 44a, 44b, 44c, 44d, and is formed by the oil guide portion 35 and the oil guide path 46 formed by the wall surface of the transmission case 1. And supplied to the lubricating oil passage 11 formed in the main shaft 10 from the lubricating oil supply hole 43 formed in the guide tube portion 42 in the same manner as described above, and the centrifugal force generated in the main shaft 10 causes The lubrication is performed by ejecting the gas from the ejection hole 11b to each part.
[0041]
Therefore, according to the present embodiment, when the counter shaft 21 is rotationally driven at a relatively high speed, such as during high-speed running, a sufficient amount of lubricating oil is scattered by gears such as the driven gear 25 provided on the counter shaft 21. Then, a sufficient amount of lubricating oil is supplied to the oil receiving portion 31 of the oil guide 30 from above, and a sufficient amount of lubricating oil is supplied from the guide pipe portion 42 to the lubricating oil passage 11 formed in the main shaft 10 so that the lubricity of each portion is improved. Can be secured. On the other hand, the countershaft 21 is rotated at a low speed during low-speed running, and the lubricating oil scooped up and scattered due to the decrease in the lubricating oil flowing along the countershaft 21 and gears such as the driven gear 25 provided on the countershaft 21 is reduced. Even when the amount is relatively small, in addition to the lubricating oil supplied to the oil receiving portion 31 of the oil guide 30 from above, the lubricating oil is also introduced from below through the lubricating oil supply hole 45 opened in the bottom portion 32 of the oil receiving portion 31. The lubricating oil supplied to the oil receiving portion 31 and collected on the oil receiving portion 31 is sufficiently secured, and is introduced into the sufficient lubricating oil passage 11 formed in the main shaft 10 from the guide pipe portion 42. The lubrication of each lubricated part can be ensured by supplying.
[0042]
Further, since the lubricating property of each part is sufficiently obtained even when the countershaft 21 rotates at a relatively low speed, the amount of the lubricating oil stored in the transmission case 1 can be reduced, the weight of the vehicle body can be reduced, and the countershaft can be reduced. The agitation resistance of the lubricating oil by the gears such as the driven gear 25 provided in the motor 21 is reduced, and an improvement in fuel efficiency can be expected. Further, with the reduction of the amount of stored lubricating oil in the transmission case 1, the agitation of the lubricating oil during high-speed rotation is reduced and the oil temperature is suppressed from rising, so that deterioration of the lubricating oil is suppressed and the transmission Wear and damage of each component such as the gear can be avoided.
[0043]
In addition, the oil guiding portion 35 is formed by the hanging surface portion 36, the side edge portions 37, 38, and the lower edge portion 39, and the front ends of the side edge portions 37, 38, and the lower edge portion 39 contact the wall surface of the transmission 1. Since the hollow oil guide path 46 is formed by this, the wall surface of the transmission case 1 also has a function as a part of the lubricating oil guide path 46, and the oil guide 30 can be made compact. The space occupied by the oil guide 30 in the inside can be suppressed.
[0044]
It should be noted that the present invention is not limited to the above-described embodiment, and can be variously modified without departing from the spirit of the invention. For example, in the above-described embodiment, the guide surface 42 is penetrated from the end of the oil receiving portion 31 by the hanging surface 36, the side edges 37, 38, the lower edge 39, and the wall of the transmission case 1 of the oil guide 35. A hollow oil guide path 46 extending to the provided lubricating oil hole 43 is formed, but as shown in FIG. 6, a drooping surface portion is provided between the side edge portions 37, 38 of the oil guide portion 35 and the lower end edge 39. By forming the hollow oil guide path 46 by integrally forming the closed surface portion 47 facing the 36, it becomes possible to arrange the oil guide 30 without being affected by the wall surface of the transmission case 1, Versatility is expanded.
[0045]
Further, in the above-described embodiment, the so-called vertical type vehicle transmission in which the main shaft 10 and the counter shaft 21 are arranged to extend in the vehicle front-rear direction has been described as an example. The present invention can also be applied to other transmissions such as a horizontal type transmission for a vehicle which is arranged to extend in the vehicle body width direction.
[0046]
【The invention's effect】
According to the present invention described above, when the rotating shaft such as the counter shaft is rotated at a relatively high speed, a sufficient amount of lubricating oil is scattered by the rotating member provided on the rotating shaft, and the oil receiving portion of the oil guide is A sufficient amount of lubricating oil is collected from above, and a sufficient amount of lubricating oil is supplied to the lubricated portion by the oil guide path, so that lubricity of the portion can be ensured. On the other hand, when the rotating shaft is rotating at a relatively low speed, the amount of lubricating oil scattered by the rotating member provided on the rotating shaft is relatively small, and the amount of lubricating oil supplied from above to the oil receiving portion is reduced. Lubricating oil is supplied to the oil receiving section through the lubricating oil supply hole that opens at the bottom of the receiving section, and a sufficient amount of lubricating oil is collected on the oil receiving section and a sufficient amount of lubrication is provided to the lubricated section. Excellent lubrication can be secured by supplying oil.
[0047]
Therefore, the lubrication of the part to be lubricated can be always ensured regardless of whether the rotating shaft is rotating at high speed or low speed, and the amount of lubricating oil stored in the transmission case can be reduced. The agitation resistance of the lubricating oil by the rotating member provided on the shaft is reduced, and an improvement in fuel efficiency can be expected.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a manual transmission showing an outline of an embodiment of a lubricating oil supply structure for a vehicle transmission according to the present invention.
FIG. 2 is an overall perspective view of an oil guide.
FIG. 3 is a view taken in the direction of arrow A in FIG. 2;
FIG. 4 is a sectional view taken along line II of FIG. 2;
FIG. 5 is an enlarged sectional view taken along the line II-II of FIG. 1, showing the operation of the oil guide.
FIG. 6 is a perspective view showing another embodiment of the oil guide.
[Explanation of symbols]
1 Transmission case 10 Main shaft (rotary axis)
11 lubricating oil passage 11b ejection hole 13 sleeve 13a lubricating oil passage 14 needle bearing (lubricated part)
15 Drive gear 15a Inner circumference 16 Synchromesh mechanism 17 Synchro hub (lubricated part)
18 Balk ring (lubricated part)
19 Synchro sleeve (lubricated part)
21 counter shaft 22 drive shaft 25 driven gear (rotating member)
30 oil guide 31 oil receiving portion 32 bottom portion 33, 34 side surface portion 35 oil guide portion 36 hanging surface portion 37, 38 side edge portion 39 lower end edge portion 42 guide tube portion 43 lubrication oil holes 44a, 44b, 44c, 44d, 44e guide Rib 45 Lubricating oil supply hole 46 Oil guideway

Claims (5)

The lubricating oil stored in the transmission case is scattered by a rotating member provided on a rotating shaft, the lubricating oil is collected by an oil guide, and the collected lubricating oil is guided to a lubricated portion to be lubricated. In a lubricating oil supply structure for a vehicle transmission,
The above oil guide
An upper-opened oil receiving portion having a bottom portion and a side portion extending along a side edge of the bottom portion and intersecting with the rotation direction of the rotation shaft and projecting upward;
An oil guide path that is formed continuously at the edge of the oil receiver and guides the lubricating oil collected in the oil receiver to the lubricated portion,
A lubricating oil supply structure for a vehicular transmission, wherein a lubricating oil supply hole is formed at the bottom of the oil receiving portion. A plurality of guide ribs projecting along a direction intersecting with the rotation direction of the rotation shaft are provided side by side on the bottom portion,
The vehicle lubricating oil supply structure according to claim 1, wherein the lubricating oil supply hole is disposed between the guide ribs. The lubricating oil is scattered by a rotating member provided on a counter shaft that rotates the lubricating oil stored in the transmission case, the lubricating oil is collected by an oil guide, and the collected lubricating oil is collected at a shaft end. In a lubricating oil supply structure for a vehicular transmission, an inlet is opened to guide and lubricate a lubricated portion through a lubricating oil passage formed in a main shaft,
The above oil guide
An oil receiving portion having an open top having a bottom portion and a side portion extending along a direction intersecting the rotation direction of the counter shaft along each side edge of the bottom portion and projecting upward; and A guide tube portion having a tip inserted into the lubricating oil passage and having a lubricating oil supply hole formed therein,
An oil guide path that is formed continuously at an edge of the oil receiver and guides the lubricating oil collected in the oil receiver to a lubricating oil supply hole of the guide tube;
A lubricating oil supply structure for a vehicular transmission, wherein a lubricating oil supply hole is formed at the bottom of the oil receiving portion. A plurality of guide ribs projecting along a direction intersecting with the rotation direction of the counter shaft are provided side by side on the bottom portion,
The vehicle lubricating oil supply structure according to claim 3, wherein the lubricating oil supply hole is disposed between the guide ribs. The oil taxiway,
A drooping surface portion continuously formed at a bottom edge of the oil receiving portion, and a side edge portion protrudingly formed along both side edges and a lower edge of the drooping surface portion, and having a tip abutting on a wall surface of the transmission case; An oil guiding portion having a lower edge continuous with the side edge,
The lubricating oil supply structure for a vehicle according to any one of claims 1 to 4, wherein the structure is formed by a wall surface of the transmission case.

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