JP4941145B2 - transmission - Google Patents

Description

  The present invention relates to a transmission, and more particularly to a transmission in which an input shaft and an output shaft (counter shaft) are arranged on separate axes.

  Conventionally, in a transmission that is disposed on the side of an engine that is horizontally disposed, an input shaft and an output shaft (counter shaft) are juxtaposed on separate axes, and the input shaft and the output shaft (counter shaft) In many cases, a so-called horizontal type transmission in which a plurality of transmission gear sets are arranged between the two is employed.

  Even in such a horizontal type transmission, it is required to increase the number of stages in order to improve drive feeling.

  However, when such a transmission is multistaged, the number of transmission gears increases, the total length of the engine / transmission combination (powertrain) becomes long, and it becomes difficult to lay out in the engine room.

  For this reason, in the transmission, it is required to make the total length of the transmission as short as possible while achieving multistage.

Therefore, in the following Patent Document 1, the following transmission is proposed.
In addition to the input shaft, this transmission has three shafts, the “first counter shaft”, “second counter shaft”, and “reverse shaft”, and a differential ring gear provided on the differential case on the drive shaft on each shaft. A plurality of differential drive gears (first to third output gears) for driving the (final ring gear) are provided, and the total length of the transmission is made as short as possible by sharing part of the torque transmission path. Yes.
Japanese National Patent Publication No. 10-502160

By the way, a transmission generally has a control rod that receives an operating force from a change lever or the like, a shift finger provided on the control rod, and a plurality of gears that engage with the shift finger in order to perform a gear change operation. includes a shift fork or the like, also moves the control rod in the axial direction by rotating, by controlling the shift fork, it is known to provide a shift operating mechanism for switching the speed change gears.

  Of these, the control rod needs to be laid out orthogonally to the input shaft, the counter shaft, etc. in the transmission, so that the size of the transmission varies greatly depending on how the control rod is arranged. Here, in order to make the transmission compact, it is desirable to dispose the control rod as close as possible to the input shaft and the counter shaft.

  However, the control rod is usually provided with a shift finger for operating the shift fork so as to extend toward the input shaft, etc., so it is necessary to secure a layout space for the shift finger between the control shaft and the control rod. There was a problem that the rod could not be sufficiently close to the input shaft and the transmission could not be made compact.

Therefore, in the present invention, in addition to the input shaft, the first counter shaft and the second counter shaft are provided, and in each transmission provided with a differential drive gear for driving the diff ring gear on each shaft, the control rod is used as the input shaft as much as possible. It aims at providing the transmission which can comprise a transmission compactly by arrange | positioning closely.

The transmission according to the present invention includes an input shaft for inputting a driving force from the engine, a first counter shaft and a second counter shaft arranged in parallel to one side of a virtual vertical line passing through the input shaft in a side view , It said first countershaft, the first differential drive gear that drives the differential ring gear on the second to the counter shaft is fixed each drive shaft, a second differential driving gearing, a plurality of shift provided on the input shaft A transmission comprising: a drive gear; and a plurality of shift driven gears provided on the first counter shaft and the second counter shaft that are always meshed with the shift drive gear, wherein the transmission passes through the input shaft. A control rod that is arranged perpendicular to the input shaft on the other side of the vertical line , moves in the axial direction by a select operation, and rotates by a shift operation, and a direction provided at a right angle on the control rod and away from the input shaft. Face And shift finger, an input shaft synchronizer provided on the input shaft, and an input shaft shift fork to operate the input shaft synchronizing apparatus, and controls the input shaft shift fork by said shift finger.

According to the said structure, the shift finger which controls an input shaft shift fork is provided on a control rod so that it may face the other side opposite to the arrangement position of an input shaft.
For this reason, it is not necessary to secure a space for the shift finger between the control rod and the input shaft, and the control rod can be disposed close to the input shaft.
The input shaft shift fork may be of any form, for example, the input shaft synchronizer is operated by sliding in the axial direction, or the input shaft synchronizer is operated via a reversing mechanism. Further, it may be one that operates the input shaft synchronizer via a link member.

According to another embodiment of the present invention, in the input shaft side of said control rod comprises a fork shaft which is parallel with the input shaft, so that the input shaft shift forks on the fork shaft moves in the axial direction The input shaft shift fork is provided with a gate portion that goes around the control rod and engages with the shift finger.
According to the above-described configuration, the fork shaft that supports the input shaft shift fork so as to be movable in the axial direction is disposed close to the input shaft on the input shaft side of the control rod.
For this reason, even if the shift finger that faces away from the input shaft is configured to control the input shaft shift fork, the input shaft shift fork is supported at a position close to the input shaft. There is no possibility that the input shaft shift fork is tilted and the input shaft shift fork can be operated smoothly.
Therefore, while the control rod is disposed close to the input shaft, the input shaft shift fork is reliably controlled by the shift finger, and the shift can be smoothly switched.

In one embodiment of the present invention, a second counter shaft sync device provided on the second counter shaft and having the same switching direction as the input shaft sync device, and a second counter for operating the second counter shaft sync device A counter shaft shift fork, and the shift finger controls the second counter shaft shift fork.
According to the said structure, a 2nd countershaft can also be arrange | positioned close to a control rod by controlling a 2nd countershaft shift fork with the shift finger which faces the direction away from the said input shaft .
Further, since the second counter shaft shift fork is also controlled by the shift finger for controlling the input shaft shift fork, the shift operation mechanism can be simplified.
Therefore, the transmission can be configured more compactly, and the shift operation mechanism can be configured simply.

In one embodiment of the present invention, the second counter shaft shift fork is set to move in the axial direction on the same fork shaft as the input shaft shift fork.
According to the above configuration, since the second counter shaft shift fork and the input shaft shift fork move in the axial direction on the same fork shaft, the fork shaft for each shift fork is placed on a separate shaft. It is not necessary to set.
Accordingly, the layout space of the fork shaft can be reduced, and the transmission can be configured compactly.

In one embodiment of the present invention, the installation position of the shift finger on the control rod is set to an intermediate position between the input shaft and the second counter shaft.
According to the above configuration, since the shift finger is disposed at an intermediate position between the input shaft and the second counter shaft, the operation load from the shift finger is applied to the input shaft synchronizer and the second counter shaft synchronizer. On the other hand, it can transmit equally.
Therefore, the shift operation load from the shift finger can be appropriately transmitted to each synchro device, and the shift switching of each synchro device can be surely caused.

In one embodiment of the present invention, the shift finger is set as a first shift finger, and is provided on a first counter shaft spaced from the second counter shaft from the control rod and has a switching direction with the input shaft synchronizer. A different first countershaft synchronizer and a first countershaft shift fork for operating the first countershaft synchronizer, and a second shift finger for controlling the first countershaft shift fork at right angles on the control rod Provided in a direction approaching the input shaft .
According to the above configuration, the first counter shaft synchronizer provided on the first counter shaft spaced from the control rod is controlled by the second shift finger provided at a right angle on the control rod and in a direction approaching the input shaft. Will do.
For this reason, it is not necessary to provide a protruding space for the second shift finger in a direction away from the input shaft, and the second shift finger is arranged by effectively using the space between the first counter shaft and the second shift finger. be able to.
Further, the operating force from the control rod can be transmitted to the first countershaft synchronizer having a switching direction different from that of the input shaft synchronizer without providing a reversing mechanism.
Therefore, the transmission can be configured compactly without requiring additional space for the second shift finger. Further, since a reversing mechanism is not required, the shift operation mechanism can be configured simply.

In one embodiment of the present invention, a reverse shaft is provided on one side of a virtual vertical line passing through the input shaft , the fork shaft is set as a first fork shaft, and the input shaft synchro is provided on the reverse shaft. A reverse shaft synchronizer having a switching direction different from that of the device, and a reverse shaft shift fork for operating the reverse shaft synchronizer, and the reverse shaft shift fork is controlled by the second shift finger.
According to the above configuration, the reverse shaft synchronizer is controlled by the second shift finger provided so as to face the input shaft side of the control rod.
For this reason, a reverse axis synchronizer can also be controlled using a 2nd shift finger.
Therefore, the first countershaft synchronizer and the reverse shaft synchronizer can be controlled by the second shift finger, and the shift operation mechanism can be simplified.

In one embodiment of the present invention, the first counter shaft shift fork and the reverse shaft shift fork are set so as to move in the axial direction on the same second fork shaft.
According to the above configuration, since the first counter shaft shift fork and the reverse shaft shift fork move in the axial direction on the same second fork shaft, the fork shafts for each shift fork are on different shafts. It is not necessary to set to.
Therefore, the layout space of the fork shaft can be reduced, and the transmission can be configured more compactly.

In one embodiment of the present invention, the reverse shaft is separated from the control rod from the first counter shaft, and the reverse shaft shift fork is added to the second fork shaft and on the third fork shaft. Is set to move in the axial direction.
According to the above configuration, even if the reverse shaft shift fork becomes longer due to the reverse shaft being separated from the control rod, the reverse shaft shift fork is rattled by being supported by the second fork shaft and the third fork shaft. Can suppress drowning.
Therefore, even in a transmission where the shaft increases and the distance from the control rod to the reverse shaft synchronizer becomes longer, it is possible to suppress the play of the reverse shaft shift fork and increase the transmission efficiency of the operating force from the control rod. it can.

According to the present invention, it is not necessary to secure a space for the shift finger between the control rod and the input shaft, and the control rod can be disposed close to the input shaft.
Therefore, in a transmission provided with a first counter shaft and a second counter shaft in addition to the input shaft, and provided with a differential drive gear for driving the diff ring gear on each shaft, the control rod can be disposed close to the input shaft or the like. Therefore, the transmission can be configured compactly.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

First, the gear train of the transmission of this embodiment will be described with reference to FIG.
FIG. 1 is a skeleton diagram of a gear train of a transmission according to the present embodiment. In the following description, the engine side of the transmission is referred to as the transmission front side, and the non-engine side of the transmission is referred to as the transmission rear side.

  The transmission TM of the present embodiment is a so-called horizontal type manual transmission having a plurality of shafts, and is a manual transmission that achieves six forward speeds and one reverse speed.

  This transmission TM includes a laterally extending input shaft 1 that receives rotational driving force from the engine E, a first counter shaft 2 that is arranged in parallel to the input shaft 1, and an opposite side of the first counter shaft 2. Are provided with a second counter shaft 3 disposed in parallel with the input shaft 1 and a reverse shaft 4 disposed in parallel with the input shaft 1 on the first counter shaft 2 side. Further, the rotational drive force finally shifted is configured to be transmitted to the drive shaft 5 having drive wheels (not shown) at the left and right ends via the final ring gear 6.

  The input shaft 1 described above is rotatably supported by bearing members 11 and 12 at two locations, a front end on the front side of the transmission and a rear end on the rear side of the transmission, and a plurality of transmission gears and a synchronizer are provided therebetween. Provided.

Transmission gear, in order from the transmission forward, and fourth speed drive gear 13, 1-speed drive gear 14, 2-speed and 3rd-speed drive gear 15, 6-speed drive gear 16, 5-speed drive gear 17 The drive gears (13 to 17) are provided in total. Among them, by fixed to the input shaft 1 beauty 3-speed drive gear 15 Oyo fourth speed drive gear 13, 1-speed drive gear 14, 2-speed, drive gear 6-speed 16,5-speed drive gear 17 is supported on the input shaft 1 for free rotation. The 6-speed drive gear 16 and the 5-speed drive gear 17 are configured to be connected to the input shaft 1 during a shift shift by a 5-6 synchronizer 18 provided therebetween.

  The above-mentioned first counter shaft 2 is also rotatably supported by bearing members 21 and 22 at two locations, the front end and the rear end, and a plurality of transmission gears and a synchronizer are provided therebetween.

  The transmission gears are arranged in order from the transmission front side, the first output gear 23, the first-speed driven gear 24, and the second-speed driven gear 25. Among these, the first output gear 23 is fixed to the first counter shaft 2, and the first-speed driven gear 24 and the second-speed driven gear 25 are idle-supported on the first counter shaft 2. The first-speed driven gear 24 and the second-speed driven gear 25 are also configured to be connected to the first counter shaft 2 at the time of a shift shift by a 1-2 synchronizer 26 provided therebetween. Yes.

  The second countershaft 3 described above is also rotatably supported by bearing members 31 and 32 at two locations, the front end and the rear end, and a plurality of transmission gears and a synchronizer are provided therebetween.

  The transmission gear is arranged in order from the transmission front side with the second output gear 33, the fourth speed driven gear 34, the third speed driven gear 35, the sixth speed driven gear 36, and the fifth speed driven gear 37. ing. Among these, the second output gear 33, the 6th speed driven gear 36, and the 5th speed driven gear 37 are fixed to the second counter shaft 3, and the 4th speed driven gear 34 and the 3rd speed driven gear 37 are driven. 35 is supported on the second countershaft 3 for free rotation. The fourth-speed driven gear 34 and the third-speed driven gear 35 are also configured to be connected to the second countershaft 3 at the time of a shift shift by a 3-4 synchronizer 38 provided therebetween. Yes.

Of these, the third-speed driven gear 35 is configured to always mesh with the second-speed and third-speed drive gear 15 that is the same as the second-speed driven gear 25 on the first counter shaft 2.
For this reason, the drive gear for the second speed and the drive gear for the third speed are shared by the single drive gear (15), and the drive gear on the input shaft 1 can be reduced by one.

  The above-described reverse shaft 4 is rotatably supported by bearing members 41 and 42 at two locations, a front end and a rear end, and a plurality of transmission gears and a synchronizer are provided therebetween.

  The transmission gear is arranged as a third output gear 43 and a reverse gear 44 from the transmission front side, and among these, the third output gear 43 is fixed to the reverse shaft 4. The reverse gear 44 is supported by the reverse shaft 4 so as to be connected to the reverse shaft 4 at the time of reverse shift by an adjacent R synchronization device 45.

  The reverse gear 44 is always meshed with the first-speed driven gear 24 that is idle-supported on the first countershaft 2, and the reverse gear train is utilized by using the first-speed transmission gears (14, 24). Has achieved. For this reason, since it is not necessary to provide the drive gear for the reverse gear 44 in the input shaft 1, the drive gear on the input shaft 1 can further be reduced.

  A differential device 51 is provided at the center of the drive shaft 5, and the final ring gear 6 is fixed to the outer periphery of the differential device 51.

  Thus, the drive gears and the driven gears arranged on the respective shafts (1 to 4) are configured to always mesh with each corresponding gear position, and the respective synchronizers (18, 26, 38, 45). ), The rotational driving force of the engine E is output to the drive shaft 5 through the respective gear positions.

  Next, the torque flow of the transmission TM configured as described above will be described.

  First, at the neutral time, not all the synchronizers (18, 26, 38, 45) of the respective transmission gears are shifted (slidably moved in the axial direction). ~ 4) Rotate above. For this reason, even if the input shaft 1 rotates, the rotational driving force is not transmitted to the final ring gear 6 of the drive shaft 5, and the drive shaft 5 does not rotate.

  Next, at the first speed, the first-speed driven gear 24 is connected to the first counter shaft 2 by shifting the 1-2 synchronization device 26 to the first-speed driven gear 24 side. For this reason, when the input shaft 1 rotates, the rotational driving force is transmitted in the order of the first speed driving gear 14 → the first speed driven gear 24 → the first counter shaft 2 → the first output gear 23 → the final ring gear 6. Thus, the rotational driving force of the engine E is most decelerated and output to the drive shaft 5.

At the second speed, the 1-2 speed driven gear 25 is connected to the first counter shaft 2 by shifting the 1-2 synchronizing device 26 to the second speed driven gear 25 side. Therefore, when the input shaft 1 rotates, the rotation in the flow of the second speed and the third speed drive gear 15 → second speed for the driven gear 25 → first countershaft 2 → first output gear 23 → final ring gear 6 The driving force is transmitted, and the rotational driving force of the engine E is decelerated to the drive shaft 5 and output.

At the third speed, the third-speed driven gear 35 is connected to the second counter shaft 3 by shifting the 3-4 synchronizer 38 to the third-speed driven gear side 35. Therefore, when the input shaft 1 rotates, the rotation in the flow of the second-speed and third speed drive gear 15 → third speed for the driven gear 35 → second countershaft 3 → the second output gear 33 → final ring gear 6 The driving force is transmitted, and the rotational driving force of the engine E is slightly decelerated to the drive shaft 5 and output.

  Further, at the time of the fourth speed, the 4th-speed driven gear 34 is connected to the second countershaft 3 by shifting the 3-4 synchronizer 38 to the fourth speed driven gear 34 side. For this reason, when the input shaft 1 rotates, the rotational driving force is transmitted in the flow of the fourth speed drive gear 13 → the fourth speed driven gear 34 → the second counter shaft 3 → the second output gear 33 → the final ring gear 6. Therefore, the rotational driving force of the engine E is output to the drive shaft 5 at substantially the same rotational speed.

  Further, at the time of the fifth speed, the fifth-speed driving gear 17 is connected to the input shaft 1 by shifting the 5-6 synchronizer 18 to the fifth-speed driving gear 17 side. For this reason, when the input shaft 1 rotates, the rotational driving force is transmitted in the flow of the fifth speed driving gear 17 → the fifth speed driven gear 37 → the second counter shaft 3 → the second output gear 33 → the final ring gear 6. Therefore, the rotational driving force of the engine E is slightly increased on the drive shaft 5 and output.

  Finally, at the sixth speed, the 6-6 speed drive gear 16 is connected to the input shaft 1 by shifting the 5-6 synchronizer 18 to the 6th speed drive gear side 16. For this reason, when the input shaft 1 rotates, the rotational driving force is transmitted in the flow of 6-speed driving gear 16 → 6-speed driven gear 36 → second counter shaft 3 → second output gear 33 → final ring gear 6. As a result, the rotational driving force of the engine E is accelerated to the drive shaft 5 and output.

  On the other hand, at the time of reverse, the reverse gear 44 is connected to the reverse shaft 4 by shifting the R synchronization device 45 to the reverse gear 44 side. Therefore, when the input shaft 1 rotates, the rotational driving force is generated by the flow of the first speed driving gear 14 → the first speed driven gear 24 → the reverse gear 44 → the reverse shaft 4 → the third output gear 43 → the final ring gear 6. As a result, the rotational driving force of the engine E is reversed and output to the drive shaft 5.

Through the series of torque flows described above, the transmission TM according to the present embodiment achieves the sixth forward speed and the first reverse speed.
Next, the detailed structure of the transmission of this embodiment will be described with reference to FIG.
FIG. 2 is a developed sectional view of the transmission. Descriptions of main components are omitted by using the same reference numerals as those in FIG.

  The transmission TM includes a transmission case 7 that supports three axes of the first counter shaft 2, the second counter shaft 3, and the reverse shaft 4 that are arranged in parallel with the input shaft 1 described above. The transmission case 7 includes a clutch housing 8 set on the front side of the transmission and a transmission casing 9 set on the rear side of the transmission.

  The clutch housing 8 has a clutch housing recess 81 for housing the clutch device C, a differential housing recess 82 for housing the differential device 51, and a through hole 83 through which the input shaft 1 is inserted in the axial direction. Front end support portions 84a, 84b, 84c that support the front end portions of the three axes (2, 3, 4) other than the input shaft 1 are formed on the side surfaces.

  On the other hand, the transmission case 9 is constituted by a bottomed cylindrical case body, houses each transmission gear in the interior 91, and supports the rear end portion of each shaft (1, 2, 3, 4). 92a, 92b, 92c, and 92d are formed on the inner side surface.

  The clutch housing 8 and the transmission casing 9 thus configured are combined at the peripheral mating surfaces, and are fastened and fixed by a plurality of fastening bolts 10 (only one is disclosed in FIG. 2), thereby constituting the transmission case 7. is doing.

  A clutch plate 20 of the clutch device C is fixed to a spline portion 19 formed at the front end of the input shaft 1 so that the clutch plate 20 receives the rotational driving force of the engine E from the flywheel F of the engine E. It is composed.

  A four-speed drive gear 13 is fitted and fixed to the input shaft 1 adjacent to the front bearing member 11 and firmly fixed, while the first-speed drive gear 14 and the second-speed and third-speed drive gear 15 are fixed. Is formed integrally with the input shaft 1. A needle bearing n is interposed between the 6-speed drive gear 16 and the 5th-speed drive gear 17 that are supported to idle and the input shaft 1.

As described above, the first-speed drive gear 14 and the second-speed and third-speed drive gear 15 are integrally formed with the input shaft 1, so that a low-speed drive gear (14, 15) on which a large drive torque acts. And the coupling strength between the input shaft 1 can be increased.
In particular, even beauty 3-speed drive gear 15 Oyo first-speed drive gear 14 is also the second speed, since the function as a driving gear of the two gear stages (first speed and reverse speed, second speed and third speed), the other It is necessary to increase the frequency of driving torque and to increase the coupling strength compared to the driving gear of this type, but in this embodiment, since it is formed integrally with the input shaft 1, an extra reinforcing structure is not adopted. In addition, the coupling strength with the input shaft 1 can be increased.

5-6 synchronizer 18, as in the known synchronizer clutch hub 18a, a sleeve 18b, includes a synchronizer unit 18c, or 6-speed drive gear 16 and the 5-speed drive gear 17, the input shaft 1 , And are configured to be linked in synchronization.

  The first countershaft 2 is integrally formed with a first output gear 23 adjacent to the front bearing member 21. A needle bearing n is interposed between the first-speed driven gear 24 and the second-speed driven gear 25 that are supported to idle.

1-2 synchronizer 26, as with the known synchronous device, clutch hub, sleeve, a synchronizer unit provided with a (not sign applying), the driven gear 24 or the driven gear 25 for the second-speed 1-speed The first counter shaft 2 is configured to be connected in synchronization.

  The second countershaft 3 is also integrally formed with a second output gear 33 adjacent to the front bearing member 31. Further, a needle bearing n is interposed between the fourth-speed driven gear 34 and the third-speed driven gear 35 that are supported for free rotation. At the rear, the 6th speed driven gear 36 and the 5th speed driven gear 37 are fixed by fitting.

Even 3-4 synchronizer 38, like other synchronizer, the clutch hub, sleeve, provided with a synchronizer unit (not sign applying), 4 driven gear 34 or for speed and 3rd-speed driven gear 35 The second counter shaft 3 is configured to be connected in synchronization.

  The reverse shaft 4 also integrally forms a third output gear 43 adjacent to the front bearing member 41. Further, a needle bearing n is interposed between the reverse gear 44 and the idle supported.

  The R synchronization device 45 also includes a clutch hub, a sleeve, and a synchronizer unit (not provided with a reference numeral), and is configured to connect the reverse gear 44 and the reverse shaft 4 in synchronization.

  The final ring gear 6 is fastened and fixed to the outer periphery of the differential casing 52 of the differential device 51 disposed on the drive shaft 5 by fastening bolts 53. The final ring gear 6 uses the first output gear 23, the second output gear 23, and the like. All the rotational driving forces from the second output gear 33 and the third output gear 43 are received.

  The differential casing 52 of the differential device 51 is supported by the clutch housing 8 and the transmission casing 9 via bearing members 54 and 55.

  As can be seen from FIG. 2, the lengths of the input shaft 1, the first counter shaft 2, the second counter shaft 3, and the reverse shaft 4 are changed depending on the number of transmission gears arranged.

  In particular, the first counter shaft 2 is configured to be shorter than the second counter shaft 3 because only the first gear driven gear 24 and the second gear driven gear 25 are provided. Also, the reverse shaft 4 is configured to be shorter because only the reverse gear 44 is provided.

  As described above, by configuring the first counter shaft 2 and the reverse shaft 4 to be short, the transmission TM of the present embodiment improves the mountability to the vehicle.

  Next, the structure of the shift operation mechanism of this embodiment will be described with reference to FIGS. 3 is a perspective side view of the shift operation mechanism including the positional relationship of each axis in the vehicle mounted state, FIG. 4 is an upper perspective view of the shift operation mechanism as viewed from the X direction in FIG. 3, and FIG. 6 is a cross-sectional view taken along line BB in FIG. 3, FIG. 7 is a cross-sectional view taken along line CC in FIG. 3, and FIG. 8 is a shift gate pattern diagram of the shift operation mechanism. FIG. 9 is an explanatory diagram of the shift finger switching state, where (a) is a state diagram in which the shift finger is engaged with the shift fork, and (b) is a state diagram in which the shift finger is not engaged with the shift fork. .

  As shown in FIG. 3, the shift operation mechanism 100 includes a control rod 101 arranged to extend in the vertical direction on the vehicle front side of the transmission TM, and a first shift provided at the vertical position of the control rod 101. A plurality of shift forks 104, 105, 106, 107 for operating a synchronization device installed on the input shaft or the like by engaging with the first shift finger 102 and the second shift finger 103; Is provided.

First, the control rod 101 is formed by a rod member of a round bar, the input shaft 1 and the second counter shaft 3 or the like vehicle front side than One or substantially with these axes 1, 2, 3, 4 It is installed so as to be orthogonal.

  At the upper end of the control rod 101, a shift / select operation from a change lever (not shown) operated by the driver is received via the cable G, and a counterweight 108 for improving the shift feeling is pinned. Yes.

  A lid-like case member 109 that partitions the inside and outside of the transmission case 7 is provided below the counterweight 108. A through hole 109a is formed in the center of the lid-like case member 109, and the control rod 101 is installed so as to penetrate vertically through the through hole 109a. Reference numeral 110 denotes a seal member. By the lid-like case member 109, the upper portion of the control rod 101 is pivotally supported.

On the other hand, the lower end of the control rod 101 is pivotally supported by a concave rod receiving portion 111 provided at the lower portion of the transmission case 7. Thus the control rod 101, at two positions of the upper and lower end, that is rotatably supported, when subjected to the shift and select operation from the shift lever, rotating in the rotational direction as shown and moving (shifting) one or constitute so as to move in the axial direction (select).

  A coil spring 112 is interposed below the control rod 101 in order to support the control rod 101 in a floating manner in the vertical direction. The control rod 101 is configured to move freely in the vertical direction by the balance between the coil spring 112 and the counterweight 108 in the vertical direction.

  The first shift finger 102 is configured by a substantially rectangular protruding piece that protrudes in a substantially perpendicular direction toward the opposite side of the input shaft 1, that is, the front side of the vehicle. And this 1st shift finger 102 is provided as one component of the lower finger unit 120 installed in the center lower part side of the control rod 101. FIG.

  Thus, it is necessary to set the installation space for the first shift finger 102 between the input shaft 1 and the second counter shaft 3 by providing the first shift finger 102 so as to protrude toward the front side of the vehicle. Therefore, the control rod 101 can be disposed close to the input shaft 1 and the second counter shaft 3.

  The lower finger unit 120 includes a deformed cylindrical portion 121 that forms the first shift finger 102, and a cylindrical upper fork locking portion 122 and a lower fork locking portion 123 provided at the upper and lower positions thereof, The lower finger unit 120 is configured by fixing these fork locking portions 122 and 123 to the modified cylindrical portion 121.

  And the lower finger unit 120 is being fixed to the control rod 101 by pin-fixing the unusual shape cylindrical part 121 (refer FIG. 4).

In addition, the operation state at the time of shift operation of the lower finger unit 120 is demonstrated with reference to FIG. 9 mentioned later.

  Contrary to the first shift finger 102, the second shift finger 103 is configured by a substantially rectangular protruding piece that protrudes in a substantially right angle direction toward the input shaft 1 side, that is, the vehicle rear side. And this 2nd shift finger 103 is provided as one component of the upper finger unit 130 installed in the center upper part side of the control rod 101. FIG.

  Thus, by providing the second shift finger 103 so as to protrude toward the vehicle rear side, a space can be secured on the vehicle front side. Therefore, the neutral switch 131 and the detent mechanism are provided on the transmission case 7 on the vehicle front side. 132 can be provided. Further, the transmission case 7 does not have to be formed with a protruding portion that protrudes toward the front side of the vehicle.

  The upper finger unit 130 includes a modified cylindrical unit upper 133 in which the second shift finger 103 is formed, and a modified cylindrical unit lower 134.

  As shown in FIG. 4, the unit upper 133 of the upper finger unit 130 includes, in addition to the second shift finger 103, a shift fork locking portion 135 formed in a curved surface shape, and a detent that generates a detent load in the shift direction. A mechanism 136, a guide pin 137 that engages and guides the position of the control rod 101 with the guide plate, and a neutral detection peak portion 138 that abuts against the neutral switch 131 (see FIG. 3) and detects the neutral position are arranged in the circumferential direction. Respectively.

  On the other hand, the unit lower 134 is in contact with a shift fork locking portion 139 formed in a semi-cylindrical shape on the rear side of the vehicle and a detent mechanism 132 (see FIG. 3) provided on the front side of the vehicle. A detent valley 140 that defines the position is provided.

  Thus, the upper finger unit 130 constituted by the unit upper 133 and the unit lower 134 including a plurality of components is fixed to the control rod 101 by pin-fixing the unit lower 134.

  As shown in FIG. 3, the plurality of shift forks operate a 5-6 shift fork 105 that operates the 5-6 synchronizer 18 on the input shaft 1 and a 3-4 synchronizer 38 on the second counter shaft 3. A 3-4 shift fork 104, a 1-2 shift fork 106 for operating the 1-2 synchronizer 26 on the first countershaft 2, and an R shift fork 107 for operating the R synchronizer 45 on the reverse shaft 4 Is provided.

  Among these, the 5-6 shift fork 105 and the 3-4 shift fork 104 are controlled by the first shift finger 102, and the 1-2 shift fork 106 and the R shift fork 107 are controlled by the second shift finger 103.

  First, the 5-6 shift fork 105 includes a bifurcated engagement fork portion 105A that engages with a sleeve 18b (see FIG. 2) of the 5-6 synchronizer 18 on the input shaft 1, and the engagement fork portion 105A. On the other hand, a transmission arm portion 105B extending in the vehicle front-rear direction for transmitting a shift operation force from the first shift finger 102 is provided.

  Also, the 3-4 shift fork 104 is engaged with the sleeve of the 3-4 synchronizer 38 on the second countershaft 3, and the fork portion 104A has a second shape with respect to the engagement fork portion 104A. A transmission arm portion 104 </ b> B extending in the vehicle front-rear direction for transmitting a shift operation force from one shift finger 102 is provided (see FIGS. 4 and 6).

Both the 5-6 shift fork 105 and the 3-4 shift fork 104 are supported on a first fork shaft 150 extending in parallel with the input shaft 1 and the like. The first fork shaft 150 is a vehicle rear side close to the control rod 101, One or, in the vertical direction, are disposed to the intermediate position between the input shaft 1 and the second counter shaft 3.

  In this way, by supporting the 5-6 shift fork 105 and the 3-4 shift fork 104 on the same shaft (150), it is possible to reduce the space for arranging the fork shafts, which is conventionally required, to one fork. This can be handled by the arrangement space of the shaft. Therefore, the space for arranging the fork shaft can be reduced.

  Further, since the first fork shaft 150 is installed on the vehicle rear side of the control rod 101, the 5-6 shift fork 105 and the 3-4 shift fork 104 are pivoted at positions close to the input shaft 1 and the second counter shaft 3. I can support it. Therefore, it is possible to prevent the 5-6 shift fork 105 and the 3-4 shift fork 104 from falling over and falling as much as possible.

  Further, since the first fork shaft 150 is installed at an intermediate position between the input shaft 1 and the second counter shaft 3, the operating force from the first shift finger 102 is almost equally distributed to the 5-6 shift forks 105 and 3. -4 shift fork 104 can be transmitted. Therefore, the operating force of each shift fork 104, 105 can be made uniform.

  As shown in FIG. 6, the transmission arm portion 105B of the 5-6 shift fork 105 extends to the front side of the vehicle so as to turn the control rod 101 from the left side of the drawing. A gate portion 105C with which the finger 102 is engaged is provided.

  On the other hand, the transmission arm portion 104B of the 3-4 shift fork 104 extends to the vehicle front side so as to turn the control rod 101 from the right side of the drawing, and the first shift finger 102 engages on the vehicle front side of the control rod 101. The gate portion 104 </ b> C is provided so as to overlap with the gate portion 105 </ b> C of the 5-6 shift fork 105.

  In addition, these gate parts 104C and 105C are shape | molded with the iron material in order to ensure the rigidity at the time of engaging with the 1st shift finger 102. FIG. Further, the other transmission arm portions 104B and 105B and the engaging fork portions 104A and 105A are formed of an aluminum alloy in order to reduce weight and improve wear resistance.

  As shown in FIG. 6, the first fork shaft 150 is fixed to the 3-4 shift fork 104 and extends parallel to the input shaft 1, and the 3-4 fork rod 104D is slidable on the 3-4 fork rod 104D. And a 5-6 shift fork tubular portion 105D supported by the shaft. The 3-4 fork rod 104D is pivotally supported at both ends by the bearing portions 151 and 152 of the transmission case 7 so as to be slidable.

  By configuring the first fork shaft 150 in this way, when the 3-4 shift fork 104 is moved in the shift direction, the 3-4 fork rod 104D slides on the bearing portions 151, 152 in the axial direction. When the 5-6 shift fork 105 is moved in the shift direction, the cylindrical portion 105D slides on the 3-4 fork rod 104D and moves in the axial direction.

  As shown in FIG. 5, the operation in the select direction is the first shift because the gate portion 104C of the 3-4 shift fork 104 and the gate portion 105C of the 5-6 shift fork 105 are overlapped in the vertical direction. This is performed by moving the finger 102 in the axial direction of the control rod 101.

  Next, as shown in FIG. 3, the 1-2 shift fork 106 includes a bifurcated engagement fork portion 106 </ b> A that engages with the sleeve of the 1-2 synchronizer 26 on the first counter shaft 2, and this engagement. A transmission arm portion 106B extending in the vehicle front-rear direction for transmitting a shift operation force from the second shift finger 103 to the combined fork portion 106A is provided.

  Further, the R shift fork 107 is also engaged with the sleeve of the R synchronizer 45 on the reverse shaft 4 and the fork portion 107A having a forked shape, and the second shift finger 103 from the engagement fork portion 107A. And a transmission arm portion 107B extending in the vehicle front-rear direction for transmitting the shift operation force.

Both the 1-2 shift fork 106 and the R shift fork 107 are also supported on a second fork shaft 160 extending parallel to the input shaft 1 and the like. The second fork shaft 160 is in an upper position than the first counter shaft 2, One or, are installed in the vehicle rear position than the input shaft 1.

  In this way, by setting the fork shafts of the 1-2 shift fork 106 and the R shift fork 107 on the same shaft (160), the space for arranging the fork shafts, which has conventionally been required, is reduced to one. it can.

  Further, the R shift fork 107 is also supported by a third fork shaft 170 installed on the vehicle rear side of the first counter shaft 2. This is because the support points are increased in order to prevent the R shift fork 107 from curling due to the long transmission arm portion 107B of the R shift fork 107.

  As shown in FIG. 7, the transmission arm portion 106 </ b> B of the 1-2 shift fork 106 extends in the vehicle front-rear direction, and a gate portion 106 </ b> C with which the second shift finger 103 engages is provided on the vehicle rear side of the control rod 101. Provided. The gate portion 106C is also formed of an iron material in the same manner as the 5-6 shift fork 105 described above to ensure strength.

  On the other hand, the transmission arm portion 107B of the R shift fork 107 also extends in the vehicle front-rear direction, and a gate portion 107C with which the second shift finger 103 is engaged is provided on the vehicle rear side of the control rod 101.

  However, in the transmission arm portion 107B of the R shift fork 107, not only the gate portion 107C but also the first arm member 107E extending to the position of the third fork shaft 170 is formed of an iron material. As a result, the rigidity of the transmission arm 107B extending to the position farthest from the control rod 101 is increased.

  The transmission arm portion 107B includes a first arm member 107E and a cylindrical second arm member 107F. A spherical joint 107G provided at the rear end of the first arm member 107E is connected to the first arm member 107E. The second arm member 107F is connected.

  In addition, 137A of FIG. 7 is a guide plate with which the guide pin 137 engages, 136A is a detent plate with which the detent mechanism 136 of a shift direction contacts.

  The second fork shaft 160 is pin-fixed to the R shift fork 107 (first arm member 107E), and is supported on an R1 fork rod 107H extending in parallel with the input shaft 1 and slidably supported on the R1 fork rod 107H. 1-2 shift fork cylindrical portion 106D. The R1 fork rod 107H is pivotally supported at both ends by the bearings 161 and 162 of the transmission case 7 so as to be slidable.

  In this way, by configuring the second fork shaft 160, also in this case, when the R shift fork 107 is moved in the shift direction, the R1 fork rod 107H slides on the bearing portions 161 and 162 and moves in the axial direction. Therefore, when the 1-2 shift fork 106 is moved in the shift direction, the cylindrical portion 106D slides on the R1 fork rod 107H and moves in the axial direction.

  The third fork shaft 170 is configured by an R2 fork rod 107I pin-fixed to the R shift fork 107 (second arm member 107F). The R2 fork rod 107I has both ends thereof at the bearing portion of the transmission case 7. 171 and 172 are slidably supported on the shaft.

  For this reason, the R shift fork 107 can be moved in the axial direction on the third fork shaft 170.

  Regarding the operation in the select direction, since the gate portion 107C of the R shift fork 107 and the gate portion 106C of the 1-2 shift fork 106 are overlapped in the vertical direction, the second shift finger 103 is moved to the control rod 101. This is done by moving in the axial direction.

  The shift operation mechanism 100 of the present embodiment configured as described above performs a shift / select operation with the shift gate pattern shown in FIG.

  That is, the R line 181 is set on the left side of the 1st-2nd speed line 180 and the 3rd-4th speed line 182 and the 5th-6th speed line 183 are set on the right side of the 1st-2nd speed line 180, respectively. Shift / select operation is performed according to the gate pattern.

Here, as shown in FIG. 1, with respect to the 3-4 synchronizer 38 and the 5-6 synchronizer 18, the 1-2 synchronizer 26 and the R synchronizer 45 reversely set the shift switching direction. ing.
Specifically, the upshift direction of the 3-4 synchronizer 38 and the 5-6 synchronizer 18 is the front side of the transmission, while the upshift direction of the 1-2 synchronizer 26 and the R synchronizer 45 is. (R synchronization device 45 is in the idling direction) is on the rear side of the transmission.

  The shift operation mechanism 100 according to the present embodiment is configured so that the shift switching direction is reversed, the first shift finger 102 that controls the 3-4 synchronizer 38 and the 5-6 synchronizer 18, and 1- Since the second shift finger 103 that controls the two synchronization device 26 and the R synchronization device 45 is provided so as to protrude in the opposite direction with respect to the control rod 101, the respective shift directions are reversed. .

  For this reason, in the present embodiment, the shift operation mechanism 100 can be configured without newly providing a reversing mechanism or the like in the shift fork or the like, so that the shift operation mechanism 100 can be configured compactly.

Next, the operation state at the time of the shift operation of the lower finger unit 120 will be described with reference to FIG.
As shown in (a), when the control rod 101 is rotated in the shift direction with the first shift finger 102 engaged with the gate groove 104C1 of the gate portion 104C of the 3-4 shift fork 104 (selected state). The 3-4 shift fork 104 (shown by a broken line) slides linearly in the shift direction. At this time, since the edge portions 121 a are formed on both sides of the first shift finger 102, the gate portion 104 </ b> C smoothly slides without interfering with the deformed cylindrical portion 121. Although not shown, the same applies when shifting to the opposite side.

On the other hand, as shown in (b), the first shift finger 102 does not engage with the gate groove 104C1 of the gate portion 104C of the 3-4 shift fork 104 , and the outer peripheral surface of the upper fork locking portion 122 is chamfered by the gate portion 104C. In the state of contact with the portion 104C2 (non-selected state), even if the control rod 101 is rotated in the shift direction, the upper fork locking portion 122 is always in contact with the chamfered portion 104C2 of the gate portion 104C. The position of the -4 shift fork 104 is always fixed.

That is, in this state, the 3-4 shift fork 104 will be in the shift direction position is fixed at the neutral position, the upper fork locking portion 122 is interlocked or will function as a stopper.

  Since the upper fork locking portion 122 has such a function, even if the 3-4 shift fork 104 and the 5-6 shift fork 105 are supported on the first fork shaft 150 on the same axis, the accompanying movement occurs. Therefore, the neutral position of each shift fork can be reliably held.

  In this way, the lower finger unit 120 is actuated during the shift operation.

  In addition, since the operation | movement at the time of shift operation of the upper finger unit 130 is the same as the operation | movement at the time of shift operation of the lower finger unit 120, detailed description is abbreviate | omitted.

Next, the effect of this embodiment comprised in this way is demonstrated.
The transmission TM of this embodiment includes a control rod 101 which is arranged orthogonally on the vehicle front side of the input shaft 1 and moves in the axial direction by a select operation and rotates by a shift operation, and a right angle on the control rod 101. A first shift finger 102 which is provided and faces the vehicle front side of the control rod 101, a 5-6 synchronizer 18 provided on the input shaft 1, and a 5-6 shift fork 105 which operates the 5-6 synchronizer 18 And the 5-6 shift fork 105 is controlled by the first shift finger 102.

Thus, the first shift finger 102 is provided on the control rod 101 so as to face the vehicle front side opposite to the arrangement position of the input shaft 1.
For this reason, it is not necessary to secure a space for the first shift finger 102 between the control rod 101 and the input shaft 1, and the control rod 101 can be disposed close to the input shaft 1.
Therefore, in addition to the input shaft 1, there are provided three shafts such as the first counter shaft 2, the second counter shaft 3, and the reverse shaft 4, and the first to third output gears 23, 33 for driving the final ring gear 6 on each shaft. , 43, the control rod 101 can be disposed close to the input shaft 1 and the transmission TM can be configured compactly.

Further, in this embodiment, a first fork shaft 150 disposed parallel to the input shaft 1 is provided on the vehicle rear side of the control rod 101, and the 5-6 shift fork 105 is axially disposed on the first fork shaft 150. The 5-6 shift fork 105 is set to move, and is provided with a gate portion 105C that goes around the control rod 101 and engages with the first shift finger 102 (see FIG. 6).
Accordingly, the first fork shaft 150 that supports the 5-6 shift fork 105 can be disposed close to the input shaft 1.
Therefore, even if the first shift finger 102 facing the vehicle front side of the control rod 101 is used to control the 5-6 shift fork 105, the 5-6 shift fork 105 is located at a position close to the input shaft 1. By being supported, there is no possibility that the 5-6 shift fork 105 is inclined and the 5-6 shift fork 105 operates smoothly.
Therefore, the control of the 5-6 shift fork 105 by the first shift finger 102 is reliably performed while the control rod 101 is disposed close to the input shaft 1, and the shift change can be performed smoothly.

In this embodiment, a 3-4 synchronizing device 38 provided on the second counter shaft 3 and having the same switching direction as the 5-6 synchronizing device 18 and a 3-4 operating the 3-4 synchronizing device 38 are provided. The shift fork 104 is provided, and the 3-4 shift fork 104 is controlled by the first shift finger 102.
Thus, the second countershaft 3 can also be disposed close to the control rod 101 by controlling the 3-4 shift fork 104 with the first shift finger 102 facing the vehicle front side of the control rod 101.
Further, the shift operation mechanism can be simplified by controlling the 3-4 shift fork 104 by the first shift finger 102 for controlling the 5-6 shift fork 105.
Therefore, the transmission TM can be configured more compactly, and the shift operation mechanism 100 can also be configured simply.

In this embodiment, the 3-4 shift fork 104 is set to move in the axial direction on the same first fork shaft 150 as the 5-6 shift fork 105.
Accordingly, since the 3-4 shift fork 104 and the 5-6 shift fork 105 move in the axial direction on the same fork shaft (150), the fork shaft for each shift fork 104, 105 is It is not necessary to set each on a different axis.
Therefore, the layout space of the fork shaft can be reduced, and the transmission TM can be configured compactly.

In this embodiment, the installation position of the first shift finger 102 on the control rod 101 is set to an intermediate position between the input shaft 1 and the second counter shaft 3.
As a result, the first shift finger 102 is disposed at an intermediate position between the input shaft 1 and the second counter shaft 3, so that the operating force from the first shift finger 102 is It can be transmitted equally to the 3-4 synchronizer 38.
Therefore, the shift operation force from the first shift finger 102 can be properly transmitted to the synchronization devices 18 and 38, and the shift switching of the synchronization devices 18 and 38 can be surely caused.

In this embodiment, in addition to the first shift finger 102, the 1-2 shift fork 106 that operates the 1-2 synchronizer 26 provided on the first countershaft 2 spaced from the control rod 101 is controlled. The second shift finger 103 is provided at a right angle so as to face the vehicle rear side of the control rod 101.
As a result, the 1-2 synchronizing device 26 provided on the first countershaft 2 spaced from the control rod 101 is controlled by the second shift finger 103.
For this reason, it is not necessary to provide a protruding space for the second shift finger 103 on the vehicle front side of the control rod 101, and the second shift finger can be used by effectively utilizing the space between the first counter shaft 2 and the second shift finger 103. 103 can be arranged.
Further, the operating force from the control rod 101 can be transmitted to the 1-2 synchronization device 26 having a switching direction different from that of the 5-6 synchronization device 18 without providing a separate reversing mechanism.
Therefore, the transmission TM can be configured in a compact manner without requiring a separate arrangement space for the second shift finger 103. Further, since a reversing mechanism is not required, the shift operation mechanism 100 can be configured simply.

In this embodiment, the second shift finger 103 controls the R shift fork 107 that operates the R synchronization device 45 whose switching direction is different from that of the 5-6 synchronization device 18.
Thereby, the R synchronizer 45 can also be controlled using the second shift finger 103.
Thus, the second shift finger 103 can control two of the 1-2 synchronizer 26 and the R synchronizer 45, and the shift operation mechanism 100 can be simplified.

In this embodiment, the 1-2 shift fork 106 and the R shift fork 107 are set to move in the axial direction on the same second fork shaft 160.
As a result, the 1-2 shift fork 106 and the R shift fork 107 move in the axial direction on the same second fork shaft 160. Therefore, the fork shafts for the shift forks 106 and 107 are separately provided. It does not have to be set on the axis.
Therefore, the layout space of the fork shaft can be reduced, and the transmission TM can be configured more compactly.

In this embodiment, the R shift fork 107 is set to move in the axial direction on the third fork shaft 170 in addition to the second fork shaft 160.
As a result, even if the reverse shaft 4 is separated from the control rod 101 and the R shift fork 107 becomes longer, it is supported by the second fork shaft 160 and the third fork shaft 170, so Can suppress drowning.
Therefore, even in the transmission TM in which the shaft is increased and the distance from the control rod 101 to the R synchronizer 45 is increased, rattling of the R shift fork 107 is suppressed and the transmission efficiency of the operation force from the control rod 101 is increased. Can do.

As described above, in the correspondence between the configuration of the present invention and the above-described embodiment,
The diff ring gear of the present invention corresponds to the final ring gear 6 of the embodiment,
Similarly,
The first differential drive gear corresponds to the first output gear 23,
The second differential drive gear corresponds to the second output gear 33 ,
The input shaft synchronizer corresponds to the 5-6 synchronizer 18,
The input shaft shift fork corresponds to the 5-6 shift fork 105,
The second counter shaft synchronizer corresponds to the 3-4 synchronizer 38,
The second countershaft shift fork corresponds to the 3-4 shift fork 104,
The first counter shaft synchronizer corresponds to the 1-2 synchronizer 26,
The first countershaft shift fork corresponds to the 1-2 shift fork 106,
The reverse axis synchronizer corresponds to the R synchronizer 45,
The reverse shaft shift fork corresponds to the R shift fork 107,
The present invention is not limited to the above-described embodiments, but includes embodiments applied to all transmissions.
The transmission is not limited to a manual transmission. For example, a control rod that operates a synchronization device may be applied to a transmission having an automatic transmission function that is operated by an electric motor, a hydraulic actuator, or the like.

Further, in this embodiment, since the arranged transversely to the transmission, but the control rod against the positional relationship has been described with reference to represent like "vehicle front side", the transmission is placed vertically, or arranged in the opposite direction If necessary, the expression may be changed as appropriate.

  In this embodiment, a plurality of shift fingers are provided. However, only the first shift finger 102 may constitute the shift finger of the control rod 101.

  Further, the present invention may be applied to a reverse lever type shift fork that operates the synchronizer on the input shaft 1 without providing the first fork shaft 150 and the like.

The skeleton figure of the gear train of the transmission of this embodiment. The expanded sectional view of a transmission. The see-through | perspective side view of the shift operation mechanism shown including the positional relationship of each axis | shaft in a vehicle mounting state. The upper perspective view which looked at the shift operation mechanism from the X direction of FIG. FIG. 4 is a cross-sectional view taken along line AA in FIG. 3. FIG. 4 is a cross-sectional view taken along line BB in FIG. 3. FIG. 4 is a cross-sectional view taken along line CC in FIG. 3. The shift gate pattern figure of a shift operation mechanism. It is explanatory drawing of the switching state of a shift finger, (a) is a state figure with which the shift finger was engaged with the shift fork, (b) is a state figure with which the shift finger is not engaged with the shift fork.

E ... Engine TM ... Transmission 1 ... Input shaft 2 ... First counter shaft 3 ... Second counter shaft 4 ... Reverse shaft 5 ... Drive shaft 6 ... Final ring gear (diff ring gear)
18 ... 5-6 synchronizer (input shaft synchronizer)
23 ... First output gear (first differential drive gear)
26... 1-2 synchronization device (first counter shaft synchronization device)
33 ... Second output gear (second differential drive gear)
38 ... 3-4 Synchronizer (second counter shaft synchronizer)
45 ... R synchronizer (reverse shaft synchronizer)
DESCRIPTION OF SYMBOLS 100 ... Shift operation mechanism 101 ... Control rod 102 ... 1st shift finger 103 ... 2nd shift finger 104 ... 3-4 shift fork (2nd countershaft shift fork)
105 ... 5-6 shift fork (input shaft shift fork)
106 ... 1-2 shift fork (first countershaft shift fork)
107 ... R shift fork (reverse shaft shift fork)
150 ... First fork shaft (fork shaft)

Claims (9)

An input shaft for inputting driving force from the engine, and a first counter shaft, a second counter shaft, a first counter shaft, a first counter shaft, and a first counter shaft arranged in parallel to one side of a virtual vertical line passing through the input shaft in a side view the first differential drive gear that drives the differential ring gear on the two-the counter shaft is fixed each drive shaft, a second differential driving gearing, and a plurality of variable speed drive gear provided on the input shaft, the speed-change driving A transmission comprising a plurality of shift driven gears provided on the first countershaft and on the second countershaft, which are always meshed with the gear;
A control rod that is arranged orthogonal to the input axis on the other side of the virtual vertical line passing through the input axis, moves in the axial direction by a select operation, and rotates by a shift operation;
A shift finger provided at a right angle on the control rod and facing away from the input shaft ;
An input shaft synchronizer provided on the input shaft;
An input shaft shift fork for operating the input shaft synchronizer,
A transmission for controlling the input shaft shift fork by the shift finger. In the input shaft side of said control rod comprises a fork shaft which is parallel with said input shaft,
Set the input shaft shift fork to move in the axial direction on the fork shaft,
The transmission according to claim 1, wherein the input shaft shift fork is provided with a gate portion that goes around the control rod and engages with the shift finger. A second counter shaft synchronizer provided on the second counter shaft and having the same switching direction as the input shaft synchronizer;
A second counter shaft shift fork for operating the second counter shaft synchronizer,
Transmission of claim 1 or 2, wherein controlling said second counter shaft shift fork by said shift finger. The transmission according to claim 3, wherein the second countershaft shift fork is set to move in the axial direction on the same fork shaft as the input shaft shift fork. The transmission according to claim 4, wherein an installation position of the shift finger on the control rod is set at an intermediate position between the input shaft and the second counter shaft. Set the shift finger as the first shift finger,
A first counter shaft sync device provided on a first counter shaft spaced from the second counter shaft from the control rod and having a switching direction different from that of the input shaft sync device;
A first counter shaft shift fork for operating the first counter shaft synchronizer;
A second shift finger for controlling said first counter shaft shift fork, the control rod on the provided at right angles to, transmission according to what Re one of claims 1 to 5 which is provided in a direction approaching to the input shaft . A reverse shaft is provided on one side of a virtual vertical line passing through the input shaft, a reverse shaft sync device provided on the reverse shaft and having a different switching direction from the input shaft sync device,
A reverse shaft shift fork for operating the reverse shaft synchronizer,
The transmission according to claim 6, wherein the reverse shaft shift fork is controlled by the second shift finger. The fork shaft is set as the first fork shaft,
The transmission according to claim 7, wherein the first counter shaft shift fork and the reverse shaft shift fork are set to move in the axial direction on the same second fork shaft. The reverse shaft is spaced from the control rod from the first counter shaft,
The transmission according to claim 8, wherein the reverse shaft shift fork is set to move in the axial direction on a third fork shaft in addition to the second fork shaft.

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