JP3185507B2 - Transmission synchronization device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synchronizing device for a transmission, and more particularly, to a lubrication system for an outer synchronizer ring and an intermediate cone and an intermediate cone and an inner synchronizer ring, which can achieve good lubrication and equalize the degree of wear. The present invention relates to a transmission synchronizing device that can be made longer and can have a longer life.

[0002]

2. Description of the Related Art A vehicle is provided with a manual transmission, an automatic transmission, and the like in order to convert a driving force of an internal combustion engine as required according to a traveling condition and to extract the driving force. These transmissions include a gear type transmission and a belt type transmission, and a gear type transmission with small power transmission loss is often used.

A gear-type manual transmission has a plurality of speed change gear trains, and the driving force of the internal combustion engine is adjusted to a running condition by shifting the gear train by a shift lever and meshing the gears at each speed. They are converted as required and taken out.

[0004] Such a gear-type manual transmission is provided with a synchronizing device in order to quickly and easily perform a shift when changing the meshing state of the gears and shifting.

[0005] Such a transmission synchronizing device includes a hub provided on a rotating shaft, a sleeve that can move axially to the hub via a synchronizer key, an outer ring chamfer meshed with a sleeve chamfer of the sleeve, and a base. An outer synchronizer ring having an outer inner tapered portion formed at a portion, an intermediate outer cone portion facing the outer inner tapered portion of the outer synchronizer ring, and an intermediate inner cone portion substantially parallel to the intermediate outer cone portion are formed at a base portion. And an inner synchronizer ring having an inner outer tapered portion facing the intermediate inner cone portion.

As a synchronizing device for a transmission having such a double cone synchro mechanism, for example, Japanese Utility Model Laid-Open Publication No.
JP 188647, JP-A-2-136822,
Japanese Unexamined Utility Model Application Publication No. Hei 2-130432, Japanese Unexamined Utility Model Application Publication No. 4-53434, Japanese Unexamined Patent Application Publication No. H4-113029 and the like disclose such techniques.

Japanese Unexamined Utility Model Publication No. 62-188647 discloses a through-hole formed in an intermediate cone so as to face an inner peripheral surface of an outer synchronizer ring and an outer peripheral surface of an inner synchronizer ring. A through hole is provided so as to match the through hole.

[0008] Japanese Utility Model Laid-Open Publication No. Hei 2-136822 discloses a plurality of oil passage notches for allowing lubricating oil to flow inward in a radial direction on an annular side wall surface adjacent to a dog clutch side surface of an outer synchronizer ring. It was established.

Japanese Unexamined Utility Model Publication No. 2-130432 discloses an inner synchronizer ring having a connecting projection formed to a predetermined width in a circumferential direction, and an oil extending axially on an inner surface of the projection and an inner surface of the inner synchronizer ring. A groove is provided, and the protrusion is provided between the clutch hub and the gear, and is provided at an outer periphery of an oil groove in which the lubricating oil guided to the outer periphery from the inside of the rotation shaft flows radially outward.

[0010] Japanese Unexamined Utility Model Publication No. Hei 4-4534 discloses an inner synchronizer ring and a gear spline ring as oil supply means for supplying lubricating oil to a sliding surface where the inner synchronizer ring slides against the gear spline ring. A plurality of oil grooves are provided on the sliding surface of the thrust ring interposed therebetween, and a recess or a through hole is provided on the sliding surface of the inner synchronizer ring.

Japanese Patent Laying-Open No. 4-113029 discloses a lubricating oil supply means for supplying lubricating oil to a locking hole for locking an intermediate cone, and from this locking hole an inner synchronizer ring and an outer synchronizer. Lubricating oil is supplied between the ring and the intermediate cone. As a lubricating oil supplying means, a passage is formed through the gear and communicates with the locking hole, and this passage is reversed with respect to the rotation direction of the gear. The engaging hole is formed so as to be opposed to the meshing portion of the gear, and is further provided with a passage penetrating through the gear and communicating with the engaging hole. An oil path for supplying a lubricating oil to the opening of the oil tank is provided.

[0012]

However, in the conventional transmission synchronizing device provided with the double-cone synchronizer disclosed in the above publications, the lubricating oil is positively provided between the intermediate cone and the inner synchronizer ring. Is not supplied, the lubrication between the outer inner taper portion of the outer synchronizer ring and the intermediate outer cone portion of the intermediate cone, and between the intermediate inner cone portion of the intermediate cone and the inner outer taper portion of the inner synchronizer ring. There is a problem that lubrication is not performed well.

For this reason, in the conventional apparatus, the lubrication between the inner synchronizer ring and the outer synchronizer ring is insufficient, and the lubrication between the inner synchronizer ring and the inner synchronizer ring is insufficient. Therefore, the lubrication becomes uneven, and the inner synchronizer ring wears quickly. As a result, there is an inconvenience that the life of the outer synchronizer ring is different from that of the inner synchronizer ring.

[0014]

SUMMARY OF THE INVENTION In order to eliminate the above-mentioned disadvantages, the present invention provides a hub provided on a rotating shaft, a sleeve which can be moved axially to the hub via a synchronizer key, and An outer synchronizer ring having an outer inner tapered portion formed at an outer ring chamfer and a base portion where the sleeve chamfer of the sleeve meshes, and an intermediate outer cone portion and a base outer portion opposed to the outer inner tapered portion of the outer synchronizer ring. A shift provided with a double cone synchro mechanism including an intermediate cone having an intermediate inner cone portion substantially parallel to the cone portion and an inner synchronizer ring having an inner outer tapered portion facing the intermediate inner cone portion. A synchronization device for the outer synchronizer ring. An outer protrusion protruding toward the rotating shaft is formed at the outer end of the hub, and one end communicates with the shaft-side lubricating oil passage of the rotating shaft and the other end is connected to the outer. A synchro-side lubricating oil passage communicating with an inner taper portion and the intermediate outer cone portion is formed and provided at a hub-side intermediate end of the intermediate cone facing the hub, and projects into the synchro-side lubricating oil passage. A synchro which has one end communicating with the synchro-side lubricating oil passage and the other end communicating between the middle inner cone portion and the inner outer taper portion. The side branch lubricating oil passage is formed and provided.

[0015]

According to the structure of the present invention, the double-cone synchro mechanism provided in the synchronizing device is configured such that the outer protruding portion formed on the hub-side outer end of the outer synchronizer ring so as to protrude toward the rotary shaft side allows the rotary shaft to rotate. The shaft-side lubricating oil passage has one end communicating with the shaft-side lubricating oil passage and the other end communicating with the outer inner tapered portion and the intermediate outer cone portion. Lubricating oil can be supplied between the outer inner tapered portion of the outer synchronizer ring and the intermediate outer cone portion of the intermediate cone by the oil passage. The double cone synchro mechanism provided in this synchronizing device has an intermediate protruding portion formed at a hub-side intermediate end portion of the intermediate cone so as to protrude into the synchro-side lubricating oil passage. And a synchro-side branch lubricating oil passage communicating the other end side between the intermediate inner cone portion and the inner outer taper portion is provided, so that the intermediate inner cone portion of the intermediate cone and the inner synchronizer ring are formed. Lubricating oil can also be supplied between the inner outer tapered portion.

[0016]

An embodiment of the present invention will be described below with reference to the drawings. 1 to 5 show an embodiment of the present invention. In FIG. 5, reference numeral 2 denotes a manual transmission (hereinafter simply referred to as "transmission"), 4 denotes a gear unit, 6 denotes a differential unit, and 8 denotes a transmission case. The transmission case 8 of the transmission 2 includes a main shaft 10 as an input shaft to which a driving force from an internal combustion engine (not shown) is input via a clutch (not shown), and a main shaft 1.
A counter shaft 12 as an output shaft parallel to 0, and a main shaft 10
And a reverse idler shaft 14 parallel to the counter shaft 12
And are supported.

The main shaft 10 includes a first main shaft bearing 20 held on a first wall portion 18 of a first case 16 of the transmission case 8 and a second wall portion 2 of a second case 22 of the transmission case 8.
4 and is supported by the second main shaft bearing 26 held by the shaft 4. The counter shaft 12 includes a first counter shaft bearing 28 held on the first wall 18 of the first case 16 and a second counter shaft bearing 30 held on the second wall 24 of the second case 22. , Are pivoted. The reverse idler shaft 14 is supported by the first wall 18 and the second wall 24.

A first speed main gear 32 and reverse main gears 34 and 2 are sequentially mounted on the main shaft 10 from the internal combustion engine side.
Speed main gear 36 is fixedly provided, and
A fifth speed main gear 38, a fourth speed main gear 40, and a fifth speed main gear 44 are provided in a side case 42 of the transmission case 8 so as to be pivotally supported.

A final drive gear 48 constituting a final reduction mechanism 46 is fixedly provided on the counter shaft 12 sequentially from the internal combustion engine side.
A speed counter gear 52 is supported on the counter shaft 12 and a third speed counter gear 54, a fourth speed counter gear 56, and a fifth speed counter gear 58 are fixedly provided on the counter shaft 12.

The first-speed counter gear 50 and the second-speed counter gear 52 include a first-speed main gear 32 and a second-speed main gear 3, respectively.
6 and meshed. The third-speed counter gear 54 and the fourth-speed counter gear 56 are meshed with the third-speed main gear 38 and the fourth-speed main gear 40, respectively. The fifth speed counter gear 58
Meshed with the high speed main gear 44.

A reverse idler gear 6 having a reverse sleeve 60 formed integrally with the reverse idler shaft 14.
2 are pivotally provided. Reverse idler gear 62
Is removably provided to the reverse main gear 34 and a reverse counter gear 72 described later. The final drive gear 48 is meshed with a final driven gear 64 provided in the differential section 6.

A first-speed / second-speed hub 6 is mounted on the counter shaft 12 between the first-speed counter gear 50 and the second-speed counter gear 52.
6 are provided by spline connection. This 1st speed 2
A first-speed / second-speed synchronizer key 68 is provided on the speed hub 66 so as to be movable in the axial direction. A first-speed / second-speed sleeve 70 is provided via the first-speed / second-speed synchronizer key 68 so as to be movable in the axial direction. ing. The first-speed / second-speed sleeve 70 is integrally provided with a reverse counter gear 72.

A first-speed synchronizer 74 is provided between the first-speed / second-speed sleeve 70 and the first-speed counter gear 50. Also, a first speed / second speed sleeve 70 and a second speed counter 52
A second-speed synchronizing device 76 is provided between the two.

On the main shaft 10 between the third speed main gear 38 and the fourth speed main gear 40, a third speed / fourth speed hub 78 is provided in spline connection. A 3-speed / 4-speed synchronizer key 80 is provided on the 3-speed / 4-speed hub 78 so as to be movable in the axial direction. A 3-speed / 4-speed sleeve 82 is axially moved via the 3-speed / 4-speed synchronizer key 80. It is provided movably.

A third-speed synchronizer 84 is provided between the third-speed / fourth-speed sleeve 82 and the third-speed main gear 38.
A fourth-speed synchronizing device 86 is provided between the third-speed / fourth-speed sleeve 82 and the fourth-speed main gear 40.

On the main shaft 10 adjacent to the fifth speed main gear 44, a fifth speed hub 88 is provided in spline connection. The 5-speed hub 88 is provided with a 5-speed synchronizer key 90 movably in the axial direction, and a 5-speed sleeve 92 is provided via the 5-speed synchronizer key 90 so as to be movable in the axial direction. Between the fifth speed sleeve 92 and the fifth speed main gear 44, a fifth speed synchronizer 94 is provided.

The first-speed synchronizer 74 and the second-speed synchronizer 7
6 is provided with a double cone synchro mechanism. Since the double cone synchro mechanism of the first-speed synchronizer 74 and the double cone synchro mechanism of the second-speed synchronizer have the same configuration, the double cone synchro mechanism 96 of the first-speed synchronizer 74 will be described below.

As shown in FIG. 1, the double cone synchronizer 96 of the first speed synchronizer 74 has an outer synchronizer ring 98, an intermediate cone 100, and an inner synchronizer ring 102.

The outer synchronizer ring 98 is shown in FIG.
As shown in the figure, an outer ring main body 106 having an outer ring hole 104 formed therein, and an outer ring chamfer 11 which meshes with a first speed sleeve chamfer 108 of the first speed / second speed sleeve 70 at an outer edge portion of the outer ring main body 106.
0. A base portion of the outer ring main body 106 has an outer inner tapered portion 112 inclined at a predetermined angle.
Is provided.

As shown in FIG. 2, the intermediate cone 100 includes a cone body 116 having a cone hole 114 formed therein, and the outer inner tapered portion 1 formed at an outer peripheral portion of the cone body 116.
An intermediate outer cone portion 118 opposing the intermediate outer cone portion 12 and an intermediate inner cone portion 120 substantially parallel to the intermediate outer cone portion 118 are provided at a base portion of the cone main body 116. The cone main body 116 is provided with a plurality of cone protrusions 122 protruding toward the first-speed counter gear 50 side.

As shown in FIG. 1, the inner synchronizer ring 102 has an inner ring main body 126 having an inner ring hole 124 formed therein, and an inner outer taper opposed to the intermediate inner cone portion 120 at an outer peripheral portion of the inner ring main body 126. A portion 128. Further, a base portion of the inner ring main body 126 has an inner inner hole portion 130.
And an inner gear joint 132.

The outer inner taper portion 112 of the outer synchronizer ring 98, the intermediate outer cone portion 118 of the intermediate cone 100, the intermediate inner cone portion 120, and the inner outer taper portion 128 of the inner synchronizer ring 102.
Is provided at a predetermined inclination with respect to the axis of the counter shaft 12. That is, the outer inner tapered portion 112 and the intermediate outer cone portion 118 and the intermediate inner cone portion 120 and the inner outer tapered portion 128 move from the first speed / second speed hub 66 side to the first speed gear 50 side with respect to the axis of the counter shaft 12. It is formed in a tapered cone shape so that it gradually expands according to FIG.

The first-speed counter gear 50 includes a first-speed gear body 136 having a first-speed gear hole 134 formed therein, a first-speed gear tooth 138 provided on an outer peripheral portion of the first-speed gear body 136,
A first-speed gear chamfer 140 corresponding to the outer ring chamfer 110 and a plurality of 1-speed gear chamfers 140 provided on the first-speed gear end face 142.
The speed gear fitting hole 144 and the 1
And a speed gear connecting surface 148.

First speed gear end face 14 of first speed counter gear 50
2 in the first gear fitting hole 144.
Is loosely fitted. 1-speed gear counter 5
0, the first ring end face 142 has an inner ring main body 126.
Inner gear joint 132 contacts. The first-speed gear joining surface 148 of the first-speed gear counter 50 is provided with an inner ring main body 1.
26 inner inner holes 130 are in contact with each other.

The double cone synchro mechanism 96 includes the
The intermediate cone 10 is attached to the inner synchronizer ring 102 engaged with the speed counter gear 50 and the first speed / second speed hub 66.
0, and an outer synchronizer ring 98 is inserted into the intermediate cone 100.

Such a double cone synchro mechanism 96
1, the outer synchronizer ring 98 of the double cone synchro mechanism 96 has a hub-side outer end 150 facing the first-speed / second-speed hub 66, as shown in FIG. In addition, an outer protruding portion 152 protruding toward the counter shaft 12 serving as a rotation shaft is formed and provided.

The outer projecting portion 152 is provided with a first-speed / second-speed hub 6.
First outer protrusion 15 extended in the direction of 6 into a cylindrical shape
4 and the counter shaft 12 from the first outer protrusion 154.
Outer protruding portion 15 protruding in the shape of a circular plate in the direction of
And 6. The second outer protrusion 156 includes
An outer notch 158 is provided.

The outer projection 152 is provided on the intermediate cone 1.
1st speed, 2 of 00 and inner synchronizer ring 102
The hub-side intermediate end 160 and the hub-side inner end 162 facing the speed hub 66 are spaced apart from each other.
Hub-side lubricating oil passage 164 formed in high-speed / second-speed hub 66
Is formed so as to protrude toward the counter shaft 12 so that the tip is positioned near the counter shaft 12. The hub-side lubricating oil passage 164 of the first-speed / second-speed hub 66 communicates with an unillustrated shaft-side lubricating oil passage of the counter shaft 12 to supply lubricating oil.

The inner synchronizer ring 1
02 has a hub-side inner end 162 facing the first-speed / second-speed hub 66 and formed with an inner projection 166 protruding toward the first-speed / second-speed hub 66. The inner protrusion 166 is provided with an inner notch 168 so as to fit into the outer notch 158 of the second outer protrusion 156. The inner notch 168 is provided in the hub-side lubricating oil passage 1.
64 are provided.

Thus, the double cone synchro mechanism 9
6 is a shaft-side lubricating oil passage (not shown) of the counter shaft 12 between the hub-side intermediate end 160 and the hub-side inner end 162 via the hub-side lubricating oil passage 164 by the outer protrusion 156. ), One end side is formed and the other end side is formed and formed with a synchro-side lubricating oil passage 170 which communicates between the outer inner tapered portion 112 of the outer synchronizer ring 98 and the intermediate outer cone portion 118 of the intermediate cone 100. ing.

The first-speed / second-speed hub 6 of the intermediate cone 100
An intermediate protruding portion 172 protruding into the synchro-lubricating oil passage 170 is formed at the hub-side intermediate end 160 facing the hub 6. The intermediate projecting portion 172 is formed so as to project into the synchro-side lubricating oil passage 170 so as to be substantially parallel to the intermediate outer cone portion 118 and the intermediate inner cone portion 120.

Thus, the double cone synchro mechanism 9
6 is a synchro-side branched lubricating oil which has one end communicating with the synchro-lubricating oil passage 170 and the other end communicating between the intermediate inner cone portion 120 and the inner outer taper portion 128 by the intermediate projecting portion 172. A passage 174 is formed and provided.

In FIG. 1, reference numeral 176 denotes the counter shaft 12 and the first gear hub 14 of the first gear 50.
6 is a bearing for a first-speed counter gear interposed between the first and second gears.
The first speed counter gear 50 is supported by the counter shaft 12 by the first speed counter gear bearing 176. The lubricating oil in the shaft-side lubricating oil passage (not shown) is used for the first-speed counter gear bearing 1.
76, and after lubrication, flows into the hub-side lubricating oil passage 164.

Next, the operation of this embodiment will be described. In the first-speed synchronizer 74 provided with the double-cone synchronizer mechanism 96, the lubrication between the intermediate cone 100 and the inner synchronizer ring 102 is generally poor.

However, in the double-cone synchronizer mechanism 96 of the first-speed synchronizer 74 of this embodiment, the outer projection 1 formed on the hub-side outer end 150 of the outer synchronizer ring 98 so as to project toward the counter shaft 12.
52 connects one end to a shaft-side lubricating oil passage (not shown) of the counter shaft 12 via the hub-side lubricating oil passage 164, and connects the other end to the outer inner tapered portion 112 and the intermediate outer cone portion 118. A synchro-side lubricating oil passage 170 communicating therewith is formed and provided.

The synchro-lubricating oil passage 170 allows the lubricating oil to flow between the outer inner tapered portion 112 of the outer synchronizer ring 98 and the intermediate outer cone portion 118 of the intermediate cone 100, as shown by the broken line A in FIGS. Can be supplied. Therefore, the outer synchronizer ring 98 and the intermediate cone 100 can be sufficiently lubricated.

The double-cone synchro mechanism 96 provided in the first-speed synchronizer 74 has an intermediate projecting portion formed at the hub-side intermediate end 160 of the intermediate cone 100 so as to project into the synchro-lubricating oil passage 170. By 172,
The synchro-side branched lubricating oil passage 1 having one end communicating with the synchro-side lubricating oil passage 170 and the other end communicating between the intermediate inner cone portion 120 and the inner outer taper portion 128.
74 are provided.

As shown by the solid line B in FIGS.
Also, the lubricating oil can be positively supplied between the middle inner cone portion 120 and the inner outer tapered portion 128 of the inner synchronizer ring 102. Therefore, the space between the intermediate cone 100 and the inner synchronizer ring 102 can be positively lubricated.

For this reason, the double-cone synchronizer mechanism 96 of the first-speed synchronizer 74 is configured such that the outer inner tapered portion 112 of the outer synchronizer ring 98 and the intermediate cone 100
Lubrication between the middle inner cone portion 120 of the middle cone 100 and the middle outer cone portion 120 of the middle cone 100.
Lubrication between the outer synchronizer ring 98 and the intermediate cone 100 and between the outer synchronizer ring 98 and the intermediate cone 100 and between the intermediate corn 100 and the inner synchronizer ring 102. Can be satisfactorily performed, the degree of wear can be equalized, and the life can be prolonged.

Moreover, the double cone synchro mechanism 9
6 is an outer synchronizer ring 98 and an intermediate cone 1
1st speed 2 between 00 and inner synchronizer ring 102
By forming the synchro-side lubricating oil passage 170 and the synchro-side branch lubricating oil passage 174 on the speed hub 66 side,
Since the outer synchronizer ring 98, the intermediate cone 100, and the inner synchronizer ring 102 are formed in a tapered cone shape that gradually expands from the first speed / second speed hub 66 toward the first speed gear 50, the counter shaft 12 The lubricating oil can be fed from the first-speed / second-speed hub 66 to the first-side speed gear 50 by utilizing the action of the rotational force of the first rotation speed, and reliable lubrication can be achieved.

FIG. 4 shows another embodiment of the present invention. Also in this alternative embodiment, the outer shaft 152 of the outer synchronizer ring 98 is formed on the hub-side outer end 150 so as to protrude toward the counter shaft 12 via the hub-side lubricating oil passage 164.
2 is a synchro-side lubricating oil passage 1 having one end communicating with the shaft-side lubricating oil passage (not shown) and the other end communicating between the outer inner tapered portion 112 and the intermediate outer cone portion 118.
70 are formed and provided.

An intermediate projecting portion 172 formed at the hub-side intermediate end portion 160 of the intermediate cone 100 so as to project into the synchro-lubricating oil passage 170 connects one end to the synchro-lubricating oil passage 170 and connects the other end. The end side is provided with a synchro-side branched lubricating oil passage 174 communicating between the intermediate inner cone portion 120 and the inner outer tapered portion 128.

In this alternative embodiment, the intermediate cone 100 has an intermediate end 160 formed at the hub-side intermediate end 160 facing the first-speed / second-speed hub 66 so as to protrude into the synchro-lubricating oil passage 170. The lubricating oil of the synchro-side lubricating oil passage 170 is supplied to the protruding portion 172 with the intermediate inner cone portion 12.
A guiding projection 178 for guiding in the direction of 0 and the inner outer tapered portion 128 is formed and provided.

The guide projection 178 is located on the outer side of the hub-side intermediate end portion 160 so as to guide the lubricating oil in the synchro-side lubricating oil passage 170 toward the intermediate inner cone portion 120 and the inner outer tapered portion 128. The protrusion 156 is formed so as to protrude toward the counter shaft 12.

According to this alternative embodiment, as in the previous embodiment, the outer inner tapered portion 112 of the outer synchronizer ring 98 and the intermediate outer cone portion 1 of the intermediate cone 100 are provided.
18 and the lubrication between the intermediate inner cone portion 120 of the intermediate cone 100 and the inner outer tapered portion 128 of the inner synchronizer ring 102 can be satisfactorily performed, and the outer synchronizer ring 9 can be lubricated.
8 and the intermediate cone 100 and the intermediate cone 100 and the inner synchronizer ring 102 can be lubricated favorably, the degree of wear thereof can be equalized, and the life can be extended.

Further, according to this another embodiment, the lubricating oil in the synchro-side lubricating oil passage 170 is supplied to the intermediate inner cone portion on the synchro-side branch lubricating oil passage 174 side by the guide protrusion 178 provided in the intermediate protruding portion 172. By being able to be more positively guided in the direction between the outer synchronizer ring 120 and the inner outer taper portion 128, lubrication between the outer synchronizer ring 98 and the intermediate cone 100 can be favorably performed, and at the same time, the The lubrication between them can be performed more favorably, the lubrication can be performed more favorably, the degree of wear can be further equalized, and the life can be extended.

It should be noted that the present invention is not limited to the above-described embodiment, and various modifications can be made. For example,
As shown in FIGS. 1 and 4, the inner guiding recessed portion 180 for guiding lubricating oil may be formed by recessing a portion of the inner outer tapered portion 128 facing the intermediate projecting portion 172 of the inner synchronizer ring 102. The intermediate protrusion 1
72, the lubricating oil in the synchro-side lubricating oil passage 170 is supplied to the intermediate inner cone portion 1 on the synchro-side branch lubricating oil passage 174 side by the inducing operation of the inner guiding concave portion 180.
20 and the inner outer tapered portion 128 can be more positively guided, and the degree of wear of the outer synchronizer ring 98 and the intermediate cone 100 and the intermediate cone 100 and the inner synchronizer ring 102 can be further equalized. The service life can be extended.

[0058]

As described above, according to the present invention, the double-cone synchro mechanism of the synchronizer is provided with the synchro-side lubrication formed by the outer projecting portion formed so as to project from the hub-side outer end of the outer synchronizer ring. With the oil passage, the lubricating oil in the shaft-side lubricating oil passage of the rotating shaft can be supplied between the outer inner tapered portion of the outer synchronizer ring and the intermediate outer cone portion of the intermediate cone. Further, the double-cone synchro mechanism of this synchronizing device uses a lubricating oil in the synchro-side lubricating oil passage formed by a synchro-side branch lubricating oil passage formed by an intermediate protruding portion formed to protrude from the hub-side intermediate end of the intermediate cone. The lubricating oil can also be supplied between the intermediate inner cone portion of the intermediate cone and the inner outer tapered portion of the inner synchronizer ring.

For this reason, the double-cone synchronizer of this synchronizing device can positively supply lubricating oil between the intermediate corn and the inner synchronizer ring, so that the intermediate portion between the outer inner tapered portion of the outer synchronizer ring and the intermediate corn can be provided. Lubrication between the outer cone part and the inner cone part of the intermediate cone and the inner outer taper part of the inner synchronizer ring can be performed well, and as a result, the outer synchronizer ring Lubrication of each of the intermediate cone and the intermediate cone and the inner synchronizer ring can be satisfactorily performed, the degree of wear can be equalized, and the life can be extended.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view of a double-cone synchro mechanism of a first-speed synchronizer showing an embodiment of the present invention.

FIG. 2 is a front view of an intermediate cone.

FIG. 3 is a front view of an outer synchronizer ring.

FIG. 4 is an enlarged sectional view of a double cone synchro mechanism of a first-speed synchronizer showing another embodiment of the present invention.

FIG. 5 is a sectional view of a transmission.

[Explanation of symbols]

 2 Transmission 10 Main shaft 12 Counter shaft 50 First speed counter gear 66 First speed / second speed hub 68 First speed / second speed synchronizer key 70 First speed / second speed sleeve 74 First speed synchronizer 96 Double cone synchro mechanism 98 Outer synchronizer ring REFERENCE SIGNS LIST 100 intermediate cone 102 inner synchronizer ring 150 hub-side outer end 152 outer-side protrusion 160 hub-side middle end 162 hub-side inner end 164 hub-side lubrication oil passage 166 inner protrusion 170 synchro-side lubrication oil passage 172 intermediate protrusion 174 Synchro side branch lubrication oil passage

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shigeru Inoue 300, Takatsukacho, Hamamatsu-shi, Shizuoka Suzuki Co., Ltd. (56) References JP-A-5-71555 (JP, A) JP-A-7-63250 ( JP, A) Jpn. Sho 62-200842 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F16D 23/06 F16D 13/74 F16H 3/12

Claims (2)

(57) [Claims] 1. A hub provided on a rotating shaft, a sleeve axially movable on the hub via a synchronizer key, an outer ring chamfer meshed with a sleeve chamfer of the sleeve, and an outer inner tapered portion at a base portion. The formed outer synchronizer ring, an intermediate outer cone portion opposed to the outer inner tapered portion of the outer synchronizer ring, and an intermediate cone formed at a base portion with an intermediate inner cone portion substantially parallel to the intermediate outer cone portion, An inner synchronizer ring having an inner outer tapered portion facing the intermediate inner cone portion, wherein a hub-side outer of the outer synchronizer ring facing the hub is provided with a double-cone synchronizer mechanism. An outer projecting portion projecting toward the rotation shaft side is formed at an end portion. A synchro-side lubricating oil passage that communicates one end to the shaft-side lubricating oil passage of the rotary shaft and communicates the other end between the outer inner tapered portion and the intermediate outer cone portion by the outer protrusion. Formed at the hub-side middle end of the intermediate cone facing the hub, and formed and provided in the synchro-lubricating oil passage so as to protrude into the synchro-lubricating oil passage. A synchronization-side branched lubricating oil passage which communicates one end with the passage and communicates the other end between the intermediate inner cone portion and the inner outer taper portion, and is provided. apparatus. 2. A lubricating oil for the synchro-lubricating oil passage is formed on an intermediate protruding portion formed at a hub-side intermediate end of the intermediate cone facing the hub and protruding into the synchro-lubricating oil passage. The transmission synchronizing device according to claim 1, wherein a guide projection is formed and provided to guide in a direction of the intermediate inner cone portion and the inner outer taper portion.