JPH0768983B2 - Manual transmission synchronizer - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synchronizing device for a manual transmission, and more particularly to a synchronizing device having both forward and backward gear synchronization functions.

(Prior Art) Generally, a manual transmission is equipped with one or a plurality of synchronizers for a forward gear that synchronizes during a shift operation to a forward gear to perform a smooth shift operation. Some gears are equipped with a synchronizer for the reverse gear to prevent gear squeaking during a shift operation to the reverse gear. However,
In the former manual transmission, when a reverse gear synchronizer having the same structure as the forward gear synchronizer is newly installed, a new space for installing the synchronizer must be secured, and In order to secure such a space, it is necessary to lengthen both the input side shaft and the output side shaft, which increases the size and weight of the manual transmission.

In order to deal with such a problem, JP-A-60-129428 discloses.
A second taper cone and a synchronizer ring corresponding to the taper cone and the synchronizer ring of the same device are installed in the synchronizer for one forward stage, and the synchronizer performs not only the synchronizing action for the forward stage but also the synchronizing action for the reverse stage. An example is also given.

(Problems to be Solved by the Invention) However, even in the synchronizing device, since two taper cones are arranged in series in the axial direction, a large installation space must be secured in the axial direction, and the taper cone and the synchronizer ring can be secured. Since two cone clutches formed by and exist in series, the drag torque generated in the cone clutch also increases. Therefore,
The object of the present invention is to solve these problems.

(Means for Solving the Problems) The present invention is a synchronizing device for a manual transmission, which is slidable only in the axial direction on a clutch hub mounted integrally on a rotary shaft so as to be rotatable integrally. The assembled hub sleeve and the gear rotatably assembled to one side of the clutch hub on the rotation shaft are integrally rotatable and movable by a predetermined amount in the axial direction. The taper cone is located between the clutch hub and the gear, and is arranged on the outer circumference of the taper cone and is located on one side of the hub sleeve and is pushed in the axial direction by sliding to one side of the hub sleeve. A second synchronizer ring which is provided on the other side of the hub sleeve and is axially pushed by sliding on the other side of the hub sleeve, the synchronizer ring being in pressure contact with the tapered cone; A connecting member that connects the synchronizer ring and the tapered cone in the axial direction is provided.

(Operation and Effect of the Invention) In the synchronizer having such a configuration, the synchronizer ring is pushed to one side in the axial direction by being slid to one side of the hub sleeve and pressed against the tapered cone, whereby the hub sleeve and the gear are The hub sleeve smoothly meshes with the gear in synchronization with each other, and the gear and the rotating shaft are connected to complete the shift of one forward speed. Further, in the synchronizer, the second synchronizer ring is pushed to the other side in the axial direction by sliding to the other side of the hub sleeve, and the taper cone is pulled to the other side via the connecting member accordingly. . Therefore, the taper cone is pressed against the synchronizer ring, so that the rotary shaft is synchronized with the gear and with another rotary shaft which is integral with the gear meshing with the gear. One of these rotary shafts is the input rotary shaft and the other is the output rotary shaft.Therefore, the input rotary shaft that is rotating due to inertia during shift to the reverse gear is in the stopped state. The rotary shaft on the input side is in a slow speed or in a stopped state in synchronization with the rotary shaft on the side, and the shift to the reverse gear can be smoothly performed without causing gear noise.

As described above, the synchronizer has both a forward-direction synchronizing action and a reverse-stage synchronizing action, but both of the synchronizing actions are performed by using a taper cone arranged only on one side of the clutch hub. Therefore, the length in the axial direction is shortened as compared with the synchronizer in which the tapered cones are arranged in series in the axial direction on both sides of the clutch hub. Therefore, according to the synchronizer, it is not necessary to secure a large installation space in the axial direction, and both the rotary shafts on the input side and the output side are shortened, so that the transmission is prevented from increasing in size and weight. You can In addition, since the cone clutch is only on one side in the synchronizer, the drag torque generated by this is not large, the durability is high, the heat generation is low, the fuel consumption is good, and the shift operation of other forward gears is adversely affected. Nothing.

(Embodiment) The first embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 shows a synchronizer according to a first embodiment of the present invention,
2 to 7 show the respective constituent members of the synchronizing device. The synchronizing device operates at the time of the fifth gear shift and the reverse shift to perform a synchronizing action, and is used in the five-speed transmission for a vertical engine shown in FIG.

The transmission is rotatably supported by an input shaft 11 in a mission case, an output shaft 12 is rotatably supported in the mission case and is coaxially and rotatably connected to the input shaft 11, and is rotatable in a mission case. The counter shaft 13 is rotatably supported and arranged in parallel with the input shaft 11 and the output shaft 12, and the output shaft 12 fixedly supported by the mission case and arranged in parallel with the counter shaft 13 is provided with an idler shaft 14. In such a transmission, the gear 12 on the output shaft 12 and the counter shaft 13
a and 13a are first gear, gears 12b and 13b are second gear, gear 12
c and 13c form a third speed gear, gears 12d and 13d form a fifth speed gear, and gear 11a on the input shaft 11 forms a fourth speed gear. Also, the gear 12 on the output shaft 12, counter shaft 13 and idler shaft 14
e, 13e, 14a form a reverse gear. The fourth speed gear 11a of the input shaft 11 is the counter shaft 1
Input shaft that always meshes with counter gear 13f
The driving force of 11 is transmitted to the counter shaft 13, and the 1st speed gear 12a and the 2nd speed gear 12b of the output shaft 12 are connected to the shaft 12 by the hub sleeve of the first synchronizer 15 to transfer the driving force of the counter shaft 13. Output shaft 12 and 3 of output shaft 12
The high speed gear 12c and the fourth speed gear 11a of the input shaft 11 are coupled to the output shaft 12 by the hub sleeve of the second synchronizer 16, and the driving force of the counter shaft 13 or the input shaft 11 is transmitted to the output shaft 12. On the other hand, the fifth speed gear 13d of the counter shaft 13 is coupled to the shaft 13 by the hub sleeve of the synchronizer 20 according to the present invention, and the driving force of the shaft 13 is output to the output shaft.
12 and the reverse gears 12e and 13e of the output shaft 12 and the counter shaft 13 are meshed with the reverse gear 14a of the idler shaft 14 so that torque can be transmitted therebetween, and the driving force of the counter shaft 13 is reversed. Is transmitted to the output shaft 12.

It should be noted that the first and second synchronizers 15 and 16 shown in FIG. 8 are well-known BorgWarner type ones and are partially omitted, and the synchronizer 20 according to the present invention is also partially omitted. Although shown, the synchronizer 20 will be described in detail below.

FIG. 1 shows a cross section of the synchronizer 20. The synchronizer 20 includes a clutch hub 21, a hub sleeve 22, a first synchronizer ring 23, a second synchronizer ring 24,
Tear cone 25, connecting ring 26, shifting key 27,
It is composed of a key spring 28 and a spline piece 29.

The clutch hub 21 is integrally rotatably mounted on the counter shaft 13, is located on one side of the fifth speed gear 13d, and is provided with an outer spline portion 21a as shown in FIGS. 2 (a) and 2 (b). Grooves 21b are provided at three equal intervals on the outer circumference. Each groove 21b is open to the outer periphery and penetrates in the axial direction. An engaging recess 21c is formed at the center of the bottom of each groove 21b. The hub sleeve 22 has an inner spline portion 22a.
The inner spline portion 22a is provided with engaging recesses 22b at three positions in the circumferential direction at equal intervals, and is assembled to the outer spline portion 21a of the clutch hub 21 so as to be slidable in the axial direction. It is attached. As shown in FIGS. 3 (a) and 3 (b), the first synchronizer ring 23 is provided with an outer spline portion 23a, a tapered cone portion 23b on the inner periphery, and three inner circumferential ends at equal intervals. The engaging protrusions 23c are provided, and three places on the outer periphery are formed as recesses 23d, and the protrusions 23e are formed between the recesses 23d. Each convex portion 23e has an arc shape with a predetermined length at equal intervals in the circumferential direction, and each groove portion of the clutch hub 21.
It is formed to be slightly shorter than the circumferential length of 21b and to be fitted in each groove 21b in the axial direction. The first synchronizer ring 23 is loosely fitted on a taper cone portion 25a of a taper cone 25, which will be described later, and each convex portion 23e is fitted in each groove portion 21b of the clutch hub 21 so as to be slightly attached to the clutch hub 21. It is assembled so that relative rotation is possible. As shown in FIGS. 4 (a) and 4 (b), the taper cone 25 is provided with a taper cone portion 25a which engages and disengages with the taper cone portion 23b of the first synchronizer ring 23, and is provided at the outer end at three circumferential locations. Engaging protrusions 25b are provided at intervals, and an annular engaging recess 25c is provided on the inner periphery of the outer end side. The taper cone 25 is rotatably attached to the outer periphery of the connecting ring 26 described later, and the engagement protrusions 25b are provided in the engagement holes 29a of the spline piece 29 integrally rotatably attached to the boss portion of the fifth speed gear 13d. It has been inserted. Thereby, the taper cone 25 is connected to the spline peas 29 so as to be integrally rotatable.

The second synchronizer ring 24 is shown in FIGS.
As shown in (c), the outer end of the ring portion 24a has three circumferential portions.
Outward flange portion 24b extending in the axial direction at equal intervals,
An outer spline portion 24c is provided at the outer end of the flange portion 24b. The flange portion 24b and the spline portion 24c are formed in an arc shape in the circumferential direction, and a recess 24d is formed at the center of the flange portion 24b in the circumferential direction, and a recess 24e is formed at the bottom of the recess 24d. Also, on the outer circumference of the ring portion 24a, there are three
Engagement recesses 24f are formed at equal intervals at the locations, and engagement projections 24g are formed at three locations in the circumferential direction on the inner circumference at equal intervals. The second synchronizer ring 24 is rotatably assembled to the outer periphery of a connecting ring 26, which will be described later, and the flange portions 24b and the spline portions 24c are fitted into the groove portions 21b of the clutch hub 21 and the clutch hub 21. Slightly relative to each other, and each engaging recess 24f makes the first
It engages with the engaging protrusion 23c of the synchronizer ring 23, and is connected to the synchronizer ring 23 so as to be integrally rotatable.

As shown in FIGS. 6 (a) and 6 (b), the connecting ring 26 has an annular engaging protrusion 26b at one end of the tubular portion 26a, and engages at the other end at three positions in the circumferential direction at equal intervals. It is provided with a protrusion 26c and is attached to the boss portion of the clutch hub 21 and the fifth speed gear 13d. In this state, the coupling ring 26 engages the engagement protrusion 26b on one end side with the engagement recess 25c of the tapered cone 25, and the engagement protrusion 26c on the other end side with each engagement protrusion of the second synchronizer ring 24. The second is engaged with the compound protrusion 24g.
The synchronizer ring 24 and the taper cone 25 are connected in the axial direction. Further, as shown in FIG. 7, the coupling ring 26 is engaged with the engagement protrusions 26c in the engagement recesses 21c of the clutch hub 21 and is rotatable integrally with the clutch hub 21. Moreover, it is rotatable with respect to the fifth speed gear 13d.
In the second synchronizer ring 24, a shifting key 27 is fitted in each recess 24d and supported by a key spring 28. The shifting key 27 is engaged with the hub sleeve 22 by the urging force of the key spring 28. It is engaged with the recess 22b in a repulsive manner.

In the synchronizer 20, the clutch hub 21 and the hub sleeve 22 can rotate integrally with the counter shaft 13, and the synchronizer rings 23 and 24, the connecting ring 26, and the shifting key 27 are slightly opposed to the clutch hub 21. It is rotatable, while the taper cone 25 and the spline piece 29 are rotatable integrally with the fifth speed gear 13d and rotatable with respect to the counter shaft 13.

In the synchronizer 20 having such a structure, the hub sleeve 22 slides to the right in the drawing of FIG. 1 during the shift operation to the fifth speed,
Along with this, the shifting key 27 moves integrally with the hub sleeve 22 to push the first synchronizer ring 23, and the synchronizer ring 23 is pressed against the taper cone portion 25a of the taper cone 25. Therefore, the first synchronizer ring 23 rotates relative to the clutch hub 21 and the hub sleeve 22 by a predetermined amount, and the sliding of the hub sleeve 22 causes the shifting key 23 to be disengaged from the hub sleeve 22 and the spline of the hub sleeve 22. The chamfer of the portion 22a comes into contact with the chamfer of the spline portion 23a of the first synchronizer ring 23 to press the synchronizer ring 23 against the tapered cone 25 more strongly. This allows the hub sleeve 22, the first
The synchronizer ring 23 and the spline piece 29 are synchronized with each other, and the hub sleeve 22 smoothly meshes with the spline piece 29. As a result, the counter shaft 13 and the fifth speed gear 13d are connected to each other, and the shift operation to the fifth speed is completed.

On the other hand, in the synchronizing device 20, during reverse shift operation, the hub sleeve 22 slides to the left in the drawing of FIG. 1, and along with this, the shifting key 27 moves integrally with the hub sleeve 22 to move the second synchronizer ring 24. Push to the left in the figure. As a result, the connecting ring 26 moves in the axial direction integrally with the second synchronizer ring 24 to pull the tapered cone 25 in the same direction, and the tapered cone portion 25a of the tapered cone 25 is pressed against the tapered cone portion 23b of the first synchronizer ring 23. Therefore, the first synchronizer ring 23 and the second synchronizer ring 24 are the clutch hub 21 and the hub sleeve.
The hub sleeve 22
The sliding key 23 is disengaged from the hub sleeve 22, and the chamfer of the spline portion 22a of the hub sleeve 22 comes into contact with the chamfer of the spline portion 24c of the second synchronizer ring 24 to press the synchronizer ring 24 more strongly. As a result, the connecting ring 26 becomes a tapered cone 25.
Is more strongly pulled to press the taper cone 25 against the first synchronizer ring 23 more strongly. As a result, the hub sleeve 22, the second synchronizer ring 24, and the spline piece 29 are synchronized with each other, and the counter shaft 13 rotating by inertia after the clutch is disengaged from the stopped output shaft 12 to the fifth speed gear 12d. , 13d to stop synchronously. During this time, the idler reverse gear 14a on the idler shaft 14 is slid and meshes with the counter reverse gear 13e on the counter shaft 13 immediately before or after the rotation is stopped, and then meshes with the reverse gear 12e on the output shaft 12, thereby The reverse shift can be smoothly completed without causing gear noise. The hub sleeve 22 meshes with the second synchronizer ring 24 after synchronization.

By the way, although the synchronizing device 20 has both the synchronizing action for the fifth speed shift and the synchronizing action for the reverse shift, one taper cone 24 provided on one side of the clutch hub 21 has both the synchronizing actions. Since it is configured to be utilized, it is short in the axial direction, and it is not necessary to secure a large installation space in the axial direction. Therefore, it is not necessary to lengthen the counter shaft 13 in order to secure such a space, and it is possible to prevent the transmission from increasing in size and increasing its weight. Further, in the synchronizer 20, since the cone clutch constituted by the taper cone 25 is present only on one side of the clutch hub 21, the drag torque generated thereby is not large, the durability is high, and the heat generation is high. Is low, fuel consumption is good, and there is no adverse effect on the shift operation of other forward gears.

FIG. 9 shows a synchronizing device according to a second embodiment of the present invention, and FIGS. 10 to 17 show the respective constituent members of the synchronizing device. The synchronizing device 40 also operates at the time of the fifth speed shift and the reverse shift to perform the synchronizing action.
It is used in a 5-speed transmission for a horizontal engine as shown in Fig. 18. In the transmission, reference numeral 31 is an input shaft, reference numeral 32 is an output shaft, and the synchronizing device 40 according to the present invention is provided on one side of the fifth speed gear 33 rotatably mounted on the input shaft 31. Assembled on top.

As shown in FIG. 9, the synchronizer 40 includes a clutch hub 41, a hub sleeve 42, a first synchronizer ring 43, a second synchronizer ring 44, a taper cone 45, a connecting ring 46, a pair of key springs 47, 48 and a spline piece 49. It is configured.

The clutch hub 41 is integrally rotatably mounted on the input shaft 31, is located on one side of the fifth speed gear 33, and is provided with an outer spline 41a as shown in FIGS. The groove portions 41b are provided at equal intervals at three positions. Each groove 41b is open to the outer periphery and penetrates in the axial direction. As shown in FIGS. 11 (a) and 11 (b), the hub sleeve 42 is provided with inner spline portions 42a, and the protrusions 42b, which are shorter and wider than the splines of the spline portions 42a, are equally spaced at three locations on the inner circumference. Is equipped with. The hub sleeve 42 is attached to the outer spline portion 41a of the clutch hub 41 so as to be slidable in the axial direction.
It is located at a substantially central portion in the circumferential direction of each groove 41b.

As shown in FIGS. 12 (a) and 12 (b), the first synchronizer ring 43 has an outer spline portion at three equal intervals in the circumferential direction.
43a and a tapered cone portion 43b on the inner circumference,
Moreover, a groove portion 43c extending in the axial direction is provided on the outer periphery of the substantially central portion of the outer spline portion 43a, and a groove portion 43d extending in the radial direction is provided at the end portion. The first synchronizer ring 43 is loosely fitted on a taper cone portion 45a of a taper cone 45 described later, and each spline portion 43a is fitted into each groove portion 41b of the clutch hub 41 to slightly It is assembled so that it can rotate relative to it. In this state, the groove portions 43c of the first synchronizer ring 43 face the protrusion portions 42b of the hub sleeve 42. As shown in FIGS. 13 (a) and 13 (b), the taper cone 45 is provided with a pair of taper cone portions 45a and 45b on the inner and outer circumferences, and is provided with engaging protrusions 45c at four locations on the outer end in the circumferential direction at equal intervals. ing. The outer peripheral taper cone portion 45a is disengaged from the taper cone portion 43b of the first synchronizer ring 43, and the inner peripheral taper cone portion 45b is disengaged from the taper cone portion 46a of the connecting ring 46 described later. The taper cone 45 is loosely fitted on the taper cone portion 46a of the connecting ring 46,
The engagement protrusions 45c are fitted into the engagement holes 49a of the spline piece 49 that is integrally rotatably assembled to the fifth speed gear 33, and are connected to the spline piece 49 so as to be integrally rotatable.

As shown in FIGS. 14 (a) and 14 (b), the second synchronizer ring 44 includes outward flange portions 44b extending axially at equal intervals at three circumferential positions on the outer end of the ring portion 44a, and the same flange portion. An outer spline portion 44c is provided at the outer end of 44b. The flange portion 44b and the spline portion 44c are formed in an arc shape in the circumferential direction, and a recess 44d is formed at a substantially central portion of the spline portion 44c. Further, inward flange portions 44e extending radially inward at equal intervals are formed at three positions in the circumferential direction of the inner end of the ring portion 44a. The second synchronizer ring 44 is assembled in a state of being connected to a connecting ring 46 described later,
For the clutch hub 41, each spline portion 44c has each groove portion 4
It is fitted with 1b and can rotate slightly. Further, in this state, the recesses 44d are aligned with the protrusions 4 of the hub sleeve 42.
Facing 2b.

The connecting ring 46 is provided with a tapered cone portion 46b on the outer periphery of the ring portion 46a as shown in FIGS.
Notch portions 46c are provided at equal intervals at three circumferential positions on the inner end side of the ring portion 46a. The circumferential length of the notch portion 46c is formed to fit the inward flange portion 44e of the second synchronizer ring 44, and a snap ring fitting recess 46d is formed on the inner circumference of the inner end portion. Has been done. Connecting ring 46
Is each inward flange portion 44e of the second synchronizer ring 44.
Is fitted in each notch 46c, and the synchronizer ring 44 is retained by a snap ring 46e fitted in the fitting recess 46d, and is assembled integrally with the synchronizer ring 44. As a result, the connecting ring 46 connects the second synchronizer ring 44 and the taper cone 45 to both taper cone parts.
It is connected in the axial direction via 45a and 46b.

As shown in FIGS. 16 (a) and 16 (b), the right key spring 47 has three engaging claws 47b at equal intervals at three positions in the circumferential direction of the inner end of the C-shaped ring portion 47a. Book leg 47c
Is equipped with. The key spring 47 is reduced in diameter at the tip inner peripheral portion of the outer spline portion 41a of the clutch hub 41 and is elastically assembled. Each engaging claw 47b is engaged with the inner end of the first synchronizer ring 43 at the center of each groove 43d. Further, the leg portion 47c of the key spring 47 is inserted and positioned in a locking hole (not shown) of the clutch hub 41. In this state, the raised portions 42b of the hub sleeve 42 face the back portions of the engaging claws 47b. As shown in FIGS. 17 (a) and 17 (b), the left-side key spring 48 has three engaging claws 48b that are bent and extend toward the outer end of the C-shaped ring portion 48a.
And a single leg portion 48c. The engaging claws 48b are located at equal intervals in the circumferential direction. The key spring 48 has a reduced diameter and is elastically assembled to the intermediate inner peripheral portion of the outer spline portion 41a of the clutch hub 41.
48b is fitted into each recess 44d of the second synchronizer ring 44 from the outer peripheral side, and the ring portion 48a is brought into contact with the step portion of the flange portion 44b. Further, the leg portion 48c of the key spring 48 is inserted and positioned in a locking hole (not shown) of the clutch hub 41. In this state, the raised portions 42b of the hub sleeve 42 face the shoulders of the engaging claws 48b.

In the synchronizer 40 having such a configuration, the hub sleeve 42 slides to the right in the drawing of FIG. 9 during the shift operation to the fifth speed,
Along with this, the shoulder portion of the engaging claw 47b of the right key spring 47 of the hub sleeve 42 is pushed to move the first synchronizer ring 43.
By pushing the taper cone part of the synchronizer ring 43.
43b is pressed against the outer peripheral taper cone portion 45a of the taper cone 45. Therefore, the first synchronizer ring 43 relatively rotates with respect to the clutch hub 41 and the hub sleeve 42 by a predetermined amount, and the hub sleeve 42 slides thereafter to cause the hub sleeve 42 to slide.
The chamfer with the protrusion 42b of 42 is the first synchronizer ring 4
By contacting the chamfer of the spline portion 43a of 3, the synchronizer ring 43 is pressed against the tapered cone 45 more strongly. As a result, the hub sleeve 42, the first synchronizer ring 43, and the spline piece 49 are synchronized with each other, and the hub sleeve 42 smoothly meshes with the spline piece 49. As a result, the input shaft 31 and the fifth speed gear 33 are connected to each other, and the shift operation to the fifth speed is completed. When performing such a shift operation, the outer end side of the taper cone 45 is the spline piece.
The inner peripheral tapered cone portion 45b of the tapered cone 45 is not pressed into contact with the tapered cone portion 46a of the coupling ring 46 because the tapered cone 45 is abutted against the upper surface 49 and the further axial movement of the tapered cone 45 is restricted. The synchronizer 40 functions as a single taper cone clutch when shifting to the fifth speed.

On the other hand, in the synchronizing device 40, during reverse shift operation, the hub sleeve 42 slides to the left in the drawing of FIG. 9, and accordingly, the raised portion 42b of the hub sleeve 42 causes the shoulder claw 48b of the left key spring 48 to fall into the shoulder. By pushing the portion, the second synchronizer ring 44 is pushed to the left in the drawing. As a result, the connecting ring 46 moves axially integrally with the second synchronizer ring 44, the tapered cone portion 46a of the connecting ring 46 is pressed against the inner peripheral tapered cone portion 45b of the tapered cone 45, and the tapered cone 4
5 outer peripheral taper cone portion 45a is the first synchronizer ring
It is pressed against the taper cone portion 43b of 43. Therefore, the first
The synchronizer ring 43 and the second synchronizer ring 44 rotate relative to the clutch hub 41 and the hub sleeve 42 by a predetermined amount, and the subsequent sliding of the hub sleeve 42 causes the chamfer of the raised portion 42b of the hub sleeve 42 to become the second synchronizer ring. The synchronizer ring 44 is pressed more strongly by contacting the chamfer of the spline portion 44c of 44. As a result, the connecting ring 46 is pulled more strongly and pressed more strongly against the tapered cone 45, and the tapered cone 45 is pressed more strongly against the first synchronizer ring 43. As a result, the hub sleeve 42 and both synchronizer rings 4
3, 44 and spline piece 49 are in sync with each other, input shaft 31 rotating by inertia after disengagement of the clutch
5th gear 3 on output shaft 32
Synchronize via 3, 34 and stop. During this time, the idler reverse gear 36 on the idler shaft 35 slides as shown by the broken line in FIG. 18, meshes with the reverse gear 37 on the input shaft 31 immediately before or after the rotation is stopped, and then on the output shaft 32. The gear 38 meshes with the gear 38, whereby the reverse shift can be smoothly completed without causing the gear squeal. The hub sleeve 42 meshes with the second synchronizer ring 44 after synchronization.

As described above, the contact synchronizing device 40 also has the synchronizing action for the fifth speed shift and the synchronizing action for the reverse shift, but both the synchronizing actions are utilized by the taper cone 45 arranged on one side of the clutch hub 41. Since the configuration is performed as described above, the same operational effect as that of the first embodiment is obtained. Further, in the synchronizer 40, since it functions as a double taper cone clutch at the time of reverse shift, the synchronization capacity is large and the shift operation force at the time of reverse shift is reduced.

[Brief description of drawings]

FIG. 1 is a sectional view of a synchronizer according to a first embodiment of the present invention, FIG. 2 (a) is a front view of a clutch hub, and FIG.
Is a cross-sectional view taken along line II-II in FIG. 3A, FIG. 3A is a front view of the first synchronizer ring, and FIG. 3B is taken along line III-III in FIG. 4 (a) is a front view of the taper cone, FIG. 4 (b) is a sectional view taken along line IV-IV of FIG. 4 (a), and FIG. 5 (a) is a second synchronizer ring. A front view, the same figure (b) is a rear view of the same ring, the same figure (c) is a sectional view in the direction of arrow VV of the same figure (a), and FIG. 6 (a) is a front view of the connecting ring. FIG. 7B is a sectional view taken along line VI-VI in FIG.
1 is an enlarged sectional view taken along the line VII-VII in FIG. 1, FIG. 8 is a skeleton diagram of a transmission adopting the same device, and FIG. 9 is a sectional view of a synchronizing device according to a second embodiment of the present invention. 10 (a) is a front view of the clutch hub, FIG. 10 (b) is a sectional view taken along the line X-X of FIG. 11 (a), and FIG. 11 (a) is a front view of the hub sleeve. Figure (b) shows the arrow XI in Figure (a).
-XI line sectional drawing, FIG. 12 (a) is a front view of the 1st synchronizer ring, FIG. 12 (b) is the arrow XII of the same figure (a).
-XII line sectional view, FIG. 13 (a) is a front view of the taper cone, FIG. 13 (b) is a sectional view taken along the line XIII-XIII of FIG. 14 (a), and FIG. 2 Front view of the synchronizer ring, the same figure (b) is a sectional view in the direction of arrow XIV-XIV of the same figure (a), FIG. 15 (a) is a front view of the connecting ring, and the same figure (b) is the same figure 16A is a sectional view taken along line XV-XV in FIG.
(A) is a front view of the key spring, (b) is an enlarged cross-sectional view taken along the line XVI-XVI in FIG. (A), and (a) is a front view of the key spring (a). FIG. 18B is an enlarged sectional view taken along line XVII-XVII in FIG. 18A, and FIG. 18 is a skeleton diagram of a transmission adopting the same device. Explanation of symbols 11, 31 …… Input shaft, 12, 32 …… Output shaft, 13 …… Counter shaft, 14, 35 …… Idler shaft, 13d, 33 …… 5th gear, 12e, 13e, 14a,
36-38 …… Reverse gear, 20, 40 …… Synchronizer, 21, 41
...... Clutch hub, 22, 42 …… Hub sleeve, 23, 43…
… 1st synchronizer ring, 24, 44 …… 2nd synchronizer ring, 25, 45 …… Taper cone, 26, 46 …… Connecting ring, 27 …… Shifting key, 28, 47, 48 …… Key spring, 29, 49 …… Spline piece.

Claims (1)

[Claims] 1. A clutch hub mounted on a rotary shaft so as to be integrally rotatable, a hub sleeve mounted on the outer periphery of the clutch hub so as to be slidable only in the axial direction, and the clutch hub on the rotary shaft. To a gear rotatably attached to one side of the gear, the taper cone being attached to the gear so as to be movable by a predetermined amount in the axial direction and located between the gear and the clutch hub; and the taper cone between the clutch hub and the gear. A hub is provided on the outer circumference of the taper cone, is located on one side of the hub sleeve, and is equipped with a synchronizer ring that is axially pushed by sliding to the one side of the hub sleeve and presses against the taper cone. The second synchronizer ring located on the side and pushed in the axial direction by sliding to the other side of the hub sleeve, and the synchronizer ring and the tapered cone in the axial direction. Synchronization device for a manual transmission comprising a connecting member for binding.