JP2019148309A - Speed change gear for saddle-riding type vehicle - Google Patents

Abstract

To provide a speed change gear for saddle-riding type vehicle that enables a driver to operate a restriction member to make a restricted/unrestricted choice on a shift drum.SOLUTION: A speed change gear for saddle-riding type vehicle comprises: an input shaft 10 to which power from a power source is input; a plurality of stages of gear trains which transmit the power input to the input shaft to an output shaft 20 through gear changing; a shift fork 35 which is supported slidably by a shift fork shaft 30, and slides through rotation of a shift drum 50 to sequentially change the plurality of stages of gear trains; and a restriction member 70 which restricts the rotation of the shift drum 50 to restrict the changing of the gear trains. A part 71 of the restriction member 70 is exposed from a speed change gear case 60 so that the part 71 constitutes an operated part (71) for driver, an inner periphery 61 of the speed change gear case 60 supports the restriction member 70 rotatably, and the restriction member 70 supports one end 31 of the shift fork shaft 30.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a transmission for a saddle-ride type vehicle. In particular, the present invention relates to a transmission for a saddle-ride type vehicle having a function of restricting shift change by restricting rotation of a shift drum.

Conventionally, as a transmission of a saddle-ride type vehicle, for example, as seen in Patent Document 1 (FIG. 1),
An input shaft 4 to which power from an engine as a power source is input;
A plurality of gear trains (7-1, 7-2, etc.) for shifting the power input to the input shaft 4 and transmitting it to the output shaft 6;
Shift forks 9-1 and 9-2 for sequentially switching the gear trains of the plurality of stages by sliding with the rotation of the shift drum 8,
A regulating member 19 (FIG. 3 etc.) for regulating the switching of the gear train by regulating the rotation of the shift drum 8;
A transmission case 1 for supporting the input shaft 4, the output shaft 6 and the shift drum 8, respectively;
There is known a transmission for a saddle-ride type vehicle equipped with

The transmission regulating member 19 is configured to regulate a predetermined rotation of the shift drum 8 so as to automatically prevent switching of a predetermined gear position when the vehicle is traveling.
Therefore, a predetermined inadvertent shift change (for example, switching from a high speed position to a low speed position without passing through a medium speed position) due to an erroneous operation by the driver during traveling is prevented.

  However, in the transmission of this saddle-ride type vehicle, since the regulating member 19 is automatically operated regardless of the driver's intention when the vehicle is traveling, the freedom of the driver's choice regarding restriction / non-regulation on the shift drum is impaired. There is a difficulty.

Japanese Utility Model Publication No. 62-12136

  The problem to be solved by the present invention is to provide a transmission for a saddle-ride type vehicle in which a driver can selectively operate restriction / non-regulation on a shift drum by a restriction member.

In order to solve the above problems, a transmission of a saddle-ride type vehicle according to the present invention is
An input shaft to which power from a power source is input;
A plurality of gear trains for shifting the power input to the input shaft and transmitting it to the output shaft;
A shift fork that is slidably supported on the shift fork shaft, and that sequentially shifts the gear train of the plurality of stages by sliding with the rotation of the shift drum; and
A regulating member that regulates switching of the gear train by regulating the rotation of the shift drum;
A transmission case that supports the input shaft, the output shaft, the shift fork shaft, and the shift drum, and
In the transmission of a saddle-ride type vehicle equipped with
A part of the restricting member is brought out of the transmission case to constitute an operated part by the driver, and the restricting member is rotatably supported on the inner periphery of the transmission case. One end of the shift fork shaft is supported by a member.

According to the transmission of this saddle-ride type vehicle,
A part of the regulating member that regulates the switching of the gear train by regulating the rotation of the shift drum is outside the transmission case, and the part to be operated by the driver is constituted by the part. When the driver operates the operated part, the driver can select / control the restriction / non-regulation of the shift drum by the restriction member.
When a part of the regulating member is taken out of the transmission case and the part to be operated by the driver is configured by the part, the size of the transmission may be increased depending on the configuration.
On the other hand, according to the present invention, the restriction member is rotatably supported on the inner periphery of the transmission case, and one end of the shift fork shaft is supported by the restriction member. Can be suppressed.
In other words, according to the transmission of the saddle-ride type vehicle, the driver can select / unregulate the restriction on the shift drum by the restriction member, and the size of the apparatus can be suppressed.

In this saddle-type vehicle transmission,
The restriction member has a cylindrical end portion that supports one end of the shift fork shaft, and an engaging portion that engages with the shift drum is provided on an outer periphery of the cylindrical end portion. Can do.
When configured in this way, one end of the shift fork shaft is supported by the cylindrical end portion of the restricting member, and the engaging portion that engages with the shift drum is provided on the outer periphery of the cylindrical end portion. The transmission can be downsized in the axial direction of the shift fork shaft.

In this saddle-type vehicle transmission,
The regulating member has a cylindrical end portion that supports one end of the shift fork shaft at one end portion, and is configured in a rod shape provided with a lever that is connected to a cable operated by a driver at the other end portion. And is rotatably supported by the transmission case,
A configuration in which an urging member that urges the regulating member in a regulating direction that regulates the rotation of the shift drum or a non-regulating direction that does not regulate the rotation of the shift drum is provided on the outer periphery of the regulating member. It can be.
If comprised in this way, the driver | operator can rotate a control member by operating (pulling) a cable, and can select control / non-control with respect to a shift drum by it.
The outer periphery of the restricting member is provided with an urging member for urging the restricting member in a restricting direction for restricting the rotation of the shift drum or in a non-regulating direction not restricting the rotation of the shift drum. The operability can be improved by eliminating the slack of the cable.

In this saddle-type vehicle transmission,
A cap member that covers the regulating member and is fixed to the transmission case is provided on the lever side of the regulating member, and a torsion spring as the biasing member is provided inside the cap member. It can be.
If comprised in this way, a torsion spring can be protected with a cap member, and operation durability can be improved.

In this saddle-type vehicle transmission,
Between the restricting member and the transmission case, the rotation range of the restricting member in the restricting direction is restricted, and the distance between the outer peripheral surface of the shift drum and the opposing surface of the restricting member with respect to the outer peripheral surface is maintained. It can be set as the structure by which the space | interval holding | maintenance part to perform is provided.
With this configuration, the gap between the outer peripheral surface of the shift drum and the opposing surface of the restricting member with respect to the outer peripheral surface is maintained, thereby eliminating the slack of the cable and at the same time preventing an increase in the rotational resistance of the shift drum. The operability can be improved.

In this saddle-type vehicle transmission,
The cable includes an outer tube and an inner cable inserted into the outer tube, and a side wall of the transmission case is provided with at least a cover member that covers the arm and the inner cable connected to the arm. It can be set as the structure which has.
If comprised in this way, the said arm and the inner cable connected to this arm can be protected by a cover member.

The left view which shows an example of the saddle type vehicle using embodiment of the transmission of the saddle type vehicle which concerns on this invention. The left view which shows embodiment of the transmission of the saddle-ride type vehicle which concerns on this invention. Similarly, a development view of the transmission. FIG. Sectional drawing of the principal part of a transmission. It is a figure which shows a control member, (a) is aa sectional drawing in FIG. (B), (b) is a left view. It is a figure which shows a shift drum, (a) is a left view, (b) is bb sectional drawing in figure (a). FIG. 4 is a development view of a transmission developed at a position different from FIG. 3. It is a figure which mainly shows a shift drum and a control member, (a) is a left side view, (b) is a view (right side view) of FIG. (A) as viewed from the case inner surface side, and (c) is a view (b). FIG. The left view which mainly shows the cover member 100. FIG. It is a figure which shows the operation lever 96, (a) is a top view, (b) is the perspective view seen from diagonally forward.

  Embodiments of a transmission for a saddle-ride type vehicle according to the present invention will be described below with reference to the drawings. It should be noted that the drawings are viewed in the direction of the reference numerals. In the following description, front and rear, left and right, and top and bottom are in accordance with the direction seen from the operator, and as necessary, the front of the vehicle is Fr, the rear is Rr, and the left is L, right side is R, upper side is U, and lower side is D. In each drawing, the same reference numerals are given to the same or corresponding parts.

FIG. 1 is a schematic side view showing only main components of a motorcycle which is an example of a saddle-ride type vehicle equipped with an embodiment of a transmission for a saddle-ride type vehicle according to the present invention.
As shown in the figure, the motorcycle includes a main frame MF, a front wheel WF provided in a front portion of the main frame MF so as to be steerable by a handle H, and a transmission TM mounted on the main frame MF. , An engine E as a power source, and a rear wheel WR supported by a rear portion of the main frame MF via a swing arm SA and driven by the engine E.

The driving method of the rear wheel WR may employ any appropriate method, but in this embodiment, the driving chain 3 is configured by connecting the driving sprocket 1 fixed to the output shaft 20 of the engine E and the driven sprocket 2 of the rear wheel WR. The rear wheel WR is driven.
T is a fuel tank, S is a seat on which a driver sits, ST is a step to put a foot on, and CP is a change pedal.

FIG. 2 is a schematic side view of the engine E and the transmission TM, and FIG. 3 is an enlarged development view of the transmission TM.
As shown in FIG. 2 and FIG. 3, the transmission TM of this embodiment is
An input shaft (main shaft) 10 to which power from the engine E as a power source is input;
A plurality of gear trains (see M1 to M6 and C1 to C6) for shifting the power input to the input shaft 10 and transmitting it to the output shaft (counter shaft) 20;
Shift forks 35 and 45 (L, R) that are slidably supported on the shift fork shafts 30 and 40 and that sequentially switch the gear train by sliding the shift drum 50, and
The input shaft 10, the output shaft 20, the shift fork shafts 30 and 40, and the transmission case 60 for supporting the shift drum 50, respectively.

  3 shows the center 50a of the shift drum 50, the center 30a of the shift fork shaft 30, the center 10a of the input shaft 10, the center 20a of the output shaft 20, the center 40a of the shift fork shaft 40, and the shift drum in FIG. It is the figure developed along 50 center 50a. The transmission case 60 is configured integrally with the crankcase CC (FIG. 2).

As shown in FIG. 5, the transmission TM of this embodiment includes a regulating member 70 that regulates the switching of the gear train by regulating the rotation of the shift drum 50.
A part 71 of the regulating member 70 protrudes outside the transmission case 60, and the part 71 constitutes an operated portion (71) by the driver. The regulating member 70 is rotatably supported on the inner periphery 61 of the transmission case 60, and the regulating member 70 supports one end 31 of the shift fork shaft 30.

  As shown in FIGS. 6 and 9, the restricting member 70 of this embodiment has a restricting arm 72 as an engaging portion, and a tip 72 c of the restricting arm 72 is provided on the shift drum 50. The rotation of the shift drum 50 is restricted by contacting the protrusion 52 (see FIGS. 5 and 7).

According to the transmission TM of the saddle-ride type vehicle, the following operational effects can be obtained.
A part 71 of the restricting member 70 that restricts the switching of the gear train by restricting the rotation of the shift drum 50 is outside the transmission case 60, and the part 71 that is operated by the driver ( 71) is configured, the driver can select / control the restriction / non-regulation of the shift drum 50 by the restriction member 70 when the driver operates the operated portion (71).

When a part 71 of the regulating member 70 is brought out of the transmission case 60 and the operated part (71) by the driver is constituted by the part 71, the size of the transmission may be increased depending on the configuration. .
On the other hand, according to the transmission TM of the saddle-ride type vehicle, the restriction member 70 is rotatably supported by the inner periphery 61 of the transmission case 60, and the one end 31 of the shift fork shaft 30 is supported by the restriction member 70. Therefore, it is possible to suppress an increase in size of the apparatus.

  That is, according to the transmission TM of this saddle-ride type vehicle, the driver can select / control the restriction / non-regulation of the shift drum 50 by the restriction member 70, and the size of the apparatus can be suppressed. Become.

  As shown in FIGS. 5 and 6, the regulating member 70 has a cylindrical end portion 73 that supports one end 31 of the shift fork shaft 30, and is engaged with the shift drum 50 on the outer periphery 73 c of the cylindrical end portion 73. The restriction arm 72 is provided as a mating engagement portion.

  If comprised in this way, the end 31 of the shift fork shaft 30 is supported by the cylindrical end part 73 of the control member 70, and also the engaging part (it engages with the shift drum 50) on the outer periphery 73c of the cylindrical end part 73 72), the transmission can be downsized in the axial direction of the shift fork shaft 30. In this embodiment, since the axial direction of the shift fork shaft 30 is the vehicle width direction, it is possible to improve the driver's straddling property and footing property by reducing the size in the vehicle width direction.

As shown in FIGS. 5 and 6, the regulating member 70 has the cylindrical end portion 73 at one end and a cable 80 operated by the driver at the other end 71 b (see FIGS. 1 and 9). It is configured in a rod shape provided with a lever 92 connected to the transmission case 60 and is rotatably supported by the transmission case 60. As shown in FIG. 5, a torsion spring 74 is provided on the outer periphery of the regulating member 70 as a biasing member that biases the regulating member 70 in a regulating direction that regulates the rotation of the shift drum 50.
In this embodiment, the urging member 74 is configured to urge the restricting member 70 in a restricting direction that restricts the rotation of the shift drum 50, but is not restricted so that the rotation of the shift drum 50 is not restricted. It is also possible to adopt a configuration for biasing in the direction.

If comprised in this way, the driver | operator can rotate the control member 70 by operating (pulling) the cable 80, and can select control / non-control with respect to the shift drum 50 by it.
A biasing member 74 that biases the regulating member 70 on the outer periphery of the regulating member 70 in a regulating direction that regulates the rotation of the shift drum 50 (or a non-regulating direction that does not regulate the rotation of the shift drum 50). Therefore, it is possible to improve the operability by eliminating the slack of the cable (inner cable).
An example of the cable operation structure will be described later.

  As shown in FIG. 5, a cap member 63 that covers the regulating member 70 and is fixed to the transmission case 60 is provided on the lever 92 side (the other end 71 b side) of the regulating member 70. The torsion spring 74 is provided inside.

If comprised in this way, the torsion spring 74 can be protected with the cap member 63, and operation | movement durability can be improved.
One end 74 b of the torsion spring 74 is engaged with an engaging portion 70 g provided on the regulating member 70, and the other end 74 c of the torsion spring 74 is engaged with an engaging portion 63 g provided on the cap member 63.

  An appropriate structure may be adopted as the mounting structure of the cap member 63, but in this embodiment, the cap member 63 covers the regulating member 70 and the torsion spring 74, and the cylindrical portion in which the distal end portion 63c enters the case 60. 63d and a flange portion 63f provided integrally on the outer periphery of the cylindrical portion 63d, and the flange portion 63f is fastened and fixed to the case 60 with a bolt 63b, thereby being attached to the case 60.

  In FIG. 5, 64 is a spacer interposed between the flange portion 63 f and the case 60, 65 a is a seal member provided between the outer peripheral surface of the regulating member 70 and the case inner surface, and 65 b is the cap member 63. A seal member 65 c provided between the outer peripheral surface and the case inner surface is a seal member provided between the outer peripheral surface of the sleeve 66 attached to the regulating member 70 and the inner peripheral surface of the cap member 63.

As the speed change mechanism in the transmission according to the present invention, a known appropriate speed change mechanism can be adopted.
Hereinafter, the speed change mechanism in the transmission TM of this embodiment will be described.
As shown in FIG. 3, the first-speed gear M1 is fixed to the input shaft (main shaft) 10 sequentially from the right side of FIG. 3, the third-speed gear M3 is splined, and the fifth-speed gear M5 is relative to the input shaft (main shaft). A 6-speed gear M6 is rotatably provided, a 4-speed gear M4 is spline-coupled, and a 2-speed gear M2 is spline-coupled. A shifter MS having dogs (5, 6) that can be individually engaged with the gears M5, M6 is splined between the gears M5, M6. The shifter MS is slid by the shift fork 35 toward the gear M5 or M6.

  On the other hand, with respect to the output shaft (counter shaft) 20, the first-speed gear C1 is provided so as to be relatively rotatable, and the third-speed gear C3 is provided so as to be relatively rotatable, starting from the right side in FIG. C5 is spline-coupled, sixth-speed gear C6 is spline-coupled, fourth-speed gear C4 is provided to be relatively rotatable, and second-speed gear C2 is provided to be rotatable. A shifter CSR having dogs (1, 3) that can be individually engaged with the gears C1, C3 is splined between the gears C1, C3, and the gears C4, C2 are individually connected with the gears C4, C2. A shifter CSL having dogs (4, 2) that can be engaged with each other is splined. The shifter CSR is slid toward the gear C1 or C3 by the shift fork 45R, and the shifter CSL is slid toward the gear C4 or C2 by the shift fork 45L.

  The shift forks 35 and 45 (L, R) operate as described later according to the rotation of the shift drum 50. The shift drum 50 rotates according to the rotation operation of the change pedal CP (see FIG. 1) by the driver (the driver's left foot in this embodiment).

  In FIG. 8, reference numeral 62 denotes a change spindle that is linked to the change pedal CP, and is connected to the change pedal CP via links L1 and L2, as shown in FIG. The rotation of the change spindle 62 intermittently rotates the shift drum 50 through a known interlocking mechanism 63.

  The shift method of this embodiment is a so-called bottom neutral method (pumping method). When the change pedal CP is depressed to the lowest position, it becomes neutral (N), and each time it is rotated upward (in the direction of the arrow U in FIG. 1), the shift drum 50 sequentially turns clockwise (in the direction of the arrow in FIG. 7A). Rotate a predetermined angle in the U direction) and shift up to 1st speed (1st), 2nd speed (2nd), 3rd speed (3rd), 4th speed (4th), 5th speed (5th), 6th speed (6th) .

  Further, when the change pedal CP is depressed (rotated in the direction of arrow D in FIG. 1) from an arbitrary position other than neutral (N), the shift drum 50 is moved counterclockwise (in the direction of arrow D) in FIG. Turn a predetermined angle and shift down.

Fig. 4 is a development view showing the cam groove of the shift drum 50 (a right direction in Fig. 7A (expanded view seen from the direction of arrow 4). In Fig. 4, arrows U and D indicate the rotation of the shift drum 50. The movement direction of the cam groove is shown by: U is the upshift direction, and D is the downshift direction.
As shown in FIGS. 3, 4, and 8, the shift drum 50 is provided with three cam grooves 51M, 51CL, and 51CR. The cam grooves 51M, 51CL, and 51CR are provided with a shift fork as a cam follower. Projections 35p and 45p (L and R) provided on the base portions 35b and 45b of 35 and 45 (L and R) are slidably inserted. Therefore, when the shift drum 50 rotates, the shift forks 35 and 45 (L, R) slide on the shift fork shafts 30 and 40 accordingly, and the fork portions 35f and 45f (L , R) slides the shifter shifter MS, CS (L, R) with which each fork is engaged.
Therefore, the basic operation of this transmission is as follows according to the rotational position of the shift drum 50.

<Neutral (N) position>
When the shift drum 50 is in the neutral (N) position, in FIG. 4, the protrusion 35p of the shift fork 35 (hereinafter, the protrusion is simply referred to as shift fork) is at the MN position of the cam groove 51M. 45 (L, R) are at the CN positions of the cam grooves 51CL and 51CR, respectively (see the black dots in the figure, the same applies hereinafter).
At this time, the shifters MS and CS (L and R) are also in the neutral position (neutral positions shown by thick lines in FIG. 3) and are not engaged with any gear.
Therefore, although the gears C1 to C6 on the counter shaft (output shaft 20) side are engaged with the gears M1 to M6 on the main shaft (input shaft 10) side, the input shaft 1 is idle with respect to the output shaft 20. .
Therefore, the power of the input shaft 10 is not transmitted to the output shaft 20.

<First speed (1st) position>
When the shift drum 50 is in the first speed (1st) position, in FIG. 4, the shift fork 35 is in the M-1st position of the cam groove 51M, but does not slide to the left or right with respect to the neutral position. The shift fork 45L is at the C-1st position of the cam groove 51CL, but does not slide to the left or right with respect to the neutral position. The shift fork 45R is at the C-1st position of the cam groove 51CR. This position is a position slid rightward from the neutral position, that is, the gear C1 side.
Therefore, in FIG. 3, the shifter CSR also slides to the gear C1 side and engages with the gear C1.
Therefore, the power of the input shaft 10 is transmitted to the output shaft 20 via the first-stage gear train = the gears M1, C1, and the shifter CSR.

<2nd (2nd) position>
When the shift drum 50 is in the second speed (2nd) position, in FIG. 4, the shift fork 35 is in the M-2nd position of the cam groove 51M, but does not slide to the left or right with respect to the neutral position. The shift fork 45R is located at the C-2nd position of the cam groove 51CR, but does not slide to the left or right with respect to the neutral position. The shift fork 45L is located at the C-2nd position of the cam groove 51CL. This position is a position slid leftward from the neutral position, that is, the gear C2 side.
Therefore, in FIG. 3, the shifter CSL also slides to the gear C2 side and engages with the gear C2.
Therefore, the power of the input shaft 10 is transmitted to the output shaft 20 at the second speed higher than the first speed through the second stage gear train = the gears M2, C2 and the shifter CSL.

<3rd (3rd) position>
When the shift drum 50 is in the third speed (3rd) position, in FIG. 4, the shift fork 35 is in the M-3rd position of the cam groove 51M, but does not slide to the left or right with respect to the neutral position. The shift fork 45L is at the C-3rd position of the cam groove 51CL, but does not slide to the left or right with respect to the neutral position. The shift fork 45R is at the C-3rd position of the cam groove 51CR. This position is a position slid leftward from the neutral position, that is, toward the gear C3.
Therefore, in FIG. 3, the shifter CSR also slides to the gear C3 side and engages with the gear C3.
Therefore, the power of the input shaft 10 is transmitted to the output shaft 20 at the third speed higher than the second speed through the third gear train = the gears M3, C3, and the shifter CSR.

<4th (4th) position>
When the shift drum 50 is in the fourth speed (4th) position, in FIG. 4, the shift fork 35 is in the M-4th position of the cam groove 51M, but does not slide to the left or right with respect to the neutral position. The shift fork 45R is at the C-4th position of the cam groove 51CR, but does not slide to the left or right with respect to the neutral position. The shift fork 45L is at the C-4th position of the cam groove 51CL. This position is a position slid rightward from the neutral position, that is, the gear C4 side.
Therefore, in FIG. 3, the shifter CSL also slides to the gear C4 side and engages with the gear C4.
Therefore, the power of the input shaft 10 is transmitted to the output shaft 20 at the fourth speed higher than the third speed through the fourth stage gear train = the gears M4, C4 and the shifter CSL.

<5th (5th) position>
When the shift drum 50 is at the fifth speed (5th) position, in FIG. 4, the shift fork 45 (L, R) is at the C-5th position of the cam groove 51C (L, R). It does not slide to the left or right.
The shift fork 35 is at the M-5th position of the cam groove 51M. This position is a position slid rightward from the neutral position, that is, the gear M5 side.
Therefore, in FIG. 3, the shifter MS also slides to the gear M5 side and engages with the gear M5.
Therefore, the power of the input shaft 10 is transmitted to the output shaft 20 at the fifth speed higher than the fourth speed via the fifth stage gear train = shifter MS and gears M5 and C5.

<6th (6th) position>
When the shift drum 50 is at the 6th speed (6th) position, in FIG. 4, the shift fork 45 (L, R) is at the C-5th position of the cam groove 51C (L, R). It does not slide to the left or right.
The shift fork 35 is at the M-6th position of the cam groove 51M. This position is a position slid leftward from the neutral position, that is, the gear M6 side.
Therefore, in FIG. 3, the shifter MS also slides to the gear M6 side and engages with the gear M6.
Therefore, the power of the input shaft 10 is transmitted to the output shaft 20 at the sixth speed higher than the fifth speed through the sixth stage gear train = shifter MS and gears M6 and C6.

  For example, in the transmission TM as described above, if no measures are taken, for example, when shifting down from the second speed to the first speed, the shift pedal CP is erroneously operated by the driver. The drum 50 may move to the neutral (N) position. If such a situation occurs, power is not transmitted from the input shaft 10 to the output shaft 20 against the will of the driver, and smooth running may not be possible.

  On the other hand, according to this embodiment, the driver can selectively operate the restriction / non-regulation of the shift drum 50 by the restriction member 70, so that the restriction member 70 is set to the restriction position as described above. Incorrect operation is prevented.

  As shown in FIGS. 9 and 10, one end 82 b of the cable 80 is connected to the lever 92. As shown in FIG. 10, the cable 80 includes an outer tube 81 and an inner cable 82 inserted into the outer tube. The lever 92 is connected to one end (tyco) 82 b of the inner cable 82.

  As shown in FIG. 11, the other end 82c of the cable 80 (the other end of the inner cable) is connected to an operation lever 96 pivotally supported by a bolt 96b on the front surface of the top bridge TB of the handle H. As shown in FIG. 1, the cable 80 is properly routed along the vehicle body.

  Therefore, when the driver rotates the operation lever 96 in the restriction release direction (unlock direction: arrow UL direction in FIG. 11B), in FIG. 9, the lever 92 and the restriction member 70 are also in the restriction release direction (arrow UL direction). ), And the restricting arm 72 is disengaged from the protrusion 52 of the shift drum 50 as shown by the phantom line in FIG. 9B, and the shift drum 50 can be rotated from the first speed position to the neutral position. It becomes.

When the driver releases the operating lever 96, the operating action of the torsion spring 74 causes the operating lever 96, the lever 92, and the regulating member 70 to rotate in the regulating direction (arrow L direction) and return to the original position, that is, the locked position. As a result, the restriction arm 72 can come into contact with the protrusion 52 of the shift drum 50, and the rotation of the shift drum 50 from the first speed position to the neutral position is restricted.
The installation location of the operation lever 96 can be set as appropriate. In this embodiment, the driver can operate the vehicle while straddling the vehicle, but is not erroneously operated in a normal driving operation. As described above, it was installed on the front surface of the top bridge TB.

  As shown in FIGS. 5 and 9B and 9C, the rotation range of the regulating member 70 in the regulating direction (L direction) is regulated and shifted between the regulating member 70 and the transmission case 60. An interval holding portion 75 that holds an interval C between the outer peripheral surface 50s of the drum 50 and the opposed surface 72s of the regulating member 70 with respect to the outer peripheral surface 50s is provided.

  If comprised in this way, the slack of the said cable (inner cable 82) will be eliminated by maintaining the space | interval C between the outer peripheral surface 50s of the shift drum 50, and the opposing surface 72s of the control member 70 with respect to this outer peripheral surface 50s. At the same time, an increase in the rotational resistance of the shift drum 50 can be prevented, and the operability can be improved.

The interval holding portion 75 of this embodiment is constituted by a projection 77 provided on the regulating member 70 and a recess 67 provided on the case 60 so as to be able to contact the projection 77.
As shown by a solid line in FIG. 9B, the gap 77 is maintained by the protrusion 77 abutting against one inner surface 67b of the recess 67, and the protrusion 77 contacts the other inner surface 67c of the recess 67 as indicated by the phantom line. By contacting, the amount of rotation of the regulating member 70 in the unlocking (UL) direction is regulated.

As shown in FIG. 10, a cover member 100 that covers at least the lever 92 and the inner cable 82 connected to the lever 92 is provided on the side surface of the transmission case 60.
If comprised in this way, the lever 92 and the inner cable 82 connected to the lever 92 can be protected by the cover member 100.

In FIG. 10, reference numeral 110 denotes a fixing member for the cable 80, which is fixed to the side surface of the case 60 with a bolt 111. A bolt 120 fixes the cover member 100 to the case 60.
In the region indicated by L1 and W1 in FIG. 4, the cam groove 51CL and the groove 50c forming the outer peripheral surface 50s of the shift drum 50, which is the surface facing the surface 72s of the regulating member 70, are over in the axial direction. Wrapping.
If comprised in this way, the axial direction length of a transmission can be reduced only by W1.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and can be appropriately modified within the scope of the gist of the present invention.

  E: power source, 10: input shaft, 20: output shaft, 30: shift fork shaft, 31: one end, 35: shift fork, 50: shift drum, 60: transmission case, 61: inner periphery, 63: cap member , 70: restriction member, 71: part (operated part), 72: engagement part, 73: cylindrical end part, 74: biasing member (torsion spring), 75: interval holding part, 80: cable, 81 : Outer tube, 82: inner cable, 92: lever, 100: cover member.

Claims (6)

An input shaft (10) to which power from a power source is input;
A plurality of gear trains for shifting the power input to the input shaft (10) and transmitting it to the output shaft (20);
A shift fork (35) that is slidably supported by the shift fork shaft (30) and that sequentially switches the gear train of the plurality of stages by sliding with the rotation of the shift drum (50);
A restricting member (70) for restricting switching of the gear train by restricting the rotation of the shift drum (50);
A transmission case (60) for supporting the input shaft (10), the output shaft (20), the shift fork shaft (30), and the shift drum (50);
In the transmission of a saddle-ride type vehicle equipped with
A part (71) of the restricting member (70) is taken out of the transmission case (60) to form an operated portion (71) by the driver with the part (71), and the transmission case (60 ), The restriction member (70) is rotatably supported by the inner periphery (61), and one end (31) of the shift fork shaft (30) is supported by the restriction member (70). Transmission for saddle-ride type vehicles. In claim 1,
The restricting member (70) has a cylindrical end (73) that supports one end (31) of the shift fork shaft (30), and the outer periphery (73c) of the cylindrical end (73) A transmission for a saddle-ride type vehicle, wherein an engagement portion (72) that engages with the shift drum (50) is provided. In claim 1 or 2,
The regulating member (70) has a cylindrical end (73) that supports one end (31) of the shift fork shaft (30) at one end, and is operated by the driver at the other end (71b). A lever (92) connected to the cable (80) is provided in a rod shape and is rotatably supported by the transmission case (60);
On the outer periphery of the restricting member (70), the restricting member (70) is placed in a restricting direction that restricts the rotation of the shift drum (50) or in a non-regulating direction that does not restrict the rotation of the shift drum (50). A transmission for a saddle-ride type vehicle, wherein a biasing member (74) for biasing is provided. In claim 3,
On the lever (92) side of the restricting member (70), a cap member (63) that covers the restricting member (70) and is fixed to the transmission case (60) is provided, and the cap member (63 ) Is provided with a torsion spring (74) as the biasing member (74). In claim 3 or 4,
Between the restriction member (70) and the transmission case (60), a rotation range of the restriction member (70) in the restriction direction is restricted, and an outer peripheral surface (50s) of the shift drum (50), Shifting of a saddle-ride type vehicle characterized in that an interval holding portion (75) for holding an interval (C) between the outer peripheral surface (50s) and the opposing surface (72s) of the regulating member (70) is provided. Machine. In any one of Claims 3-5,
The cable (80) includes an outer tube (81) and an inner cable (82) inserted into the outer tube (81), and at least the lever (80) is provided on a side surface of the transmission case (60). 92) and a cover member (100) that covers an inner cable (82) connected to the lever (92) is provided.

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