JP6380458B2 - Shifting mechanism for manual transmission - Google Patents

Shifting mechanism for manual transmission Download PDF

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JP6380458B2
JP6380458B2 JP2016105571A JP2016105571A JP6380458B2 JP 6380458 B2 JP6380458 B2 JP 6380458B2 JP 2016105571 A JP2016105571 A JP 2016105571A JP 2016105571 A JP2016105571 A JP 2016105571A JP 6380458 B2 JP6380458 B2 JP 6380458B2
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shift
reverse
engagement
control rod
finger
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JP2017211048A (en
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教秀 浦林
教秀 浦林
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マツダ株式会社
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  The present invention belongs to a technical field related to a shift operation mechanism of a manual transmission mounted on a vehicle.
  2. Description of the Related Art Conventionally, as shown in, for example, Patent Document 1, as a shift operation mechanism for a manual transmission, an axial center is interlocked with a select operation of a change lever by a vehicle occupant in a state where movement in the axial direction is restricted. A control rod that rotates around, and rotates around the axis of the control rod together with the control rod, and moves on the control rod in the axial direction of the control rod in conjunction with the shift operation of the change lever. A plurality of shift end members (1-2 shift end members for 3rd speed and 3rd shifts for 3rd speed) arranged such that the engaging members are arranged in the circumferential direction of the control rod around the control rod. End member, shift end member for 5-6 speed and shift end member for reverse) and the shift member The selecting operation Njireba, that a finger portion for selective engagement with the engaging end of one shift end member of the plurality of shift-end member is known. When the change lever is shifted while the finger is engaged with the engaging end of one shift end member, the shift end member moves in the axial direction of the control rod together with the shift member, thereby synchronizing. The device operates (when a selective sliding type reverse gear train is employed, a reverse synchronization device is not provided), and a shift to a desired gear stage is performed.
  In Patent Document 1, since the reverse select position of the change lever is located on the side opposite to the 3-4 speed select position with respect to the 1-2 speed select position, the engagement end portion of the reverse shift end member Corresponding to the reverse select position, on the opposite side of the engagement end of the shift end member for 1st to 2nd with respect to the engagement end of the shift end member for 3rd to 4th speed. positioned.
  In Patent Document 1, a selective sliding reverse gear train is employed, and the reverse idle gear needs to be moved in the axial direction of the control rod by a reverse shift operation of the change lever. Therefore, when the engagement end of the reverse shift end member engages with the finger portion and the reverse shift end member moves together with the shift member in the axial direction of the control rod, the reverse shift end member moves. The reverse idle gear connected to the other end of the reverse lever is connected to the other end of the reverse lever by rotating the reverse lever by transmitting to one end of the reverse lever supported by the transmission case in a rotatable manner. It is made to move in the axial direction.
JP 2014-137091 A
  Here, in Patent Document 1, two members, a reverse shift end member and a reverse lever, are used to move the reverse idle gear in the axial direction of the control rod in conjunction with the reverse shift operation of the change lever. . This is because, when viewed from the axial direction of the control rod, among the engagement end portions of the plurality of shift end members, the engagement end portion of the reverse shift end member is located farthest from the reverse lever, and there are a plurality of reverse levers. This is because the shift end member is located at a position shifted in the axial direction of the control rod with respect to the engagement end portion (including the shift end portion of the reverse shift end member). It is difficult to provide an engagement end portion that engages with the finger portion on the reverse lever.
  As described above, in Patent Document 1, since two members are used to move the reverse idle gear in the axial direction of the control rod, the operation force during the reverse shift operation of the change lever is used to move the reverse idle gear. There is a problem in that the conversion efficiency for converting to force is deteriorated, and as a result, the reverse shift operation of the change lever becomes heavy. Moreover, there is a problem that the cost and weight of the speed change operation mechanism are increased by using two members. In particular, since the engagement end portion located at one end of the reverse shift end member and the pressing portion for pressing the reverse lever located at the other end are displaced from each other in the axial direction of the control rod, the reverse shift end The member is distorted, and the reverse shift end member is difficult to move in the axial direction of the control rod, thereby further increasing the reverse shift operation of the change lever. If a bearing or the like is used to reliably move the reverse shift end member in the axial direction of the control rod, the cost and weight are further increased.
  The present invention has been made in view of such a point, and an object of the present invention is to improve the configuration in which the reverse idle gear is moved in the axial direction of the control rod in conjunction with the reverse shift operation of the change lever. Therefore, it is intended to reduce the cost and weight of the speed change operation mechanism and to reduce the operation force during the reverse shift operation.
In order to achieve the above object, according to the present invention, a change lever selection operation by a vehicle occupant is performed in a state where movement in an axial direction is restricted for a gear shift operation mechanism of a manual transmission mounted on a vehicle. And a control rod that rotates about the axis of the control rod in conjunction with the control rod, and rotates around the axis of the control rod together with the control rod, and on the control rod in conjunction with the shift operation of the change lever. A shift member that moves in the axial direction, a plurality of shift end members for forward shift stages that are arranged so that engagement ends are arranged in the circumferential direction of the control rod around the control rod, and the shift member One of the plurality of shift end members by a forward shift stage selection operation of the change lever. A first finger portion that selectively engages with an engagement end portion of the foot end member, a reverse lever that causes the manual transmission to be in a reverse state by a reverse shift operation of the change lever, and a reverse lever. A reverse engagement end located at a position offset in the axial direction of the control rod with respect to the engagement ends of the plurality of shift end members, and the control rod with respect to the first finger portion in the shift member The second finger portion engaged with the reverse engagement end portion by the reverse select operation of the change lever, and the first finger portion among the plurality of shift end members. When one of the shift end members is engaged with the engagement end portion, the other shift end member engages with the shift member. Both prevent the control rod from moving in the axial direction, and when the first finger portion is not engaged with the engagement end portion of any of the plurality of shift end members, the plurality of the plurality of shift end members. A first interlock means for preventing the engagement end portion of the shift end member from moving in the axial direction of the control rod together with the shift member, and the second finger portion engages with the reverse engagement end portion. A second interlocking means for preventing the reverse engagement end from moving in the axial direction of the control rod together with the shift member when the second interlocking means is not, A cylindrical portion fixed around the control rod, and protrudes radially outward from the cylindrical portion to prevent the reverse engagement end from moving. Preferably, the second finger portion and the engagement protrusion portion are engaged with the reverse engagement end portion, and the second finger portion and the engagement protrusion portion are formed by the reverse selection operation of the change lever. The engagement protrusion is engaged with the reverse engagement end and the engagement protrusion is disengaged from the reverse engagement end, and the engagement protrusion is reverse-engaged by a forward shift stage selection operation of the change lever. It was set as the structure arrange | positioned along with the circumferential direction of the said cylindrical part so that it might engage with an edge part and this 2nd finger part might become non-engagement with this reverse engagement edge part .
With the above configuration, the reverse engagement end portion provided on the reverse lever is located at a position shifted in the axial direction of the control rod with respect to the engagement end portions of the plurality of shift end members for the forward shift stage. The member is provided with a first finger portion and a second finger portion, and the second finger portion is provided at a position shifted in the axial direction of the control rod with respect to the first finger portion in the shift member, Since it is configured to engage with the reverse engagement end by reverse select operation of the change lever, the shift end member for reverse can be eliminated, and control of the shift member during reverse shift operation of the change lever is possible. By moving the rod in the axial direction, the reverse lever is moved directly by the second finger without using the reverse shift end member. Moving, it is possible to move the reverse idle gear in the axial direction of the control rod. Further, the reverse engagement end portion of the reverse lever and the connecting portion of the reverse lever with the reverse idle gear can be positioned at substantially the same position in the axial direction of the control rod, and as a result, the reverse lever is twisted. Can be prevented. Therefore, the cost and weight of the speed change operation mechanism can be reduced, and the operation force during the reverse shift operation of the change lever can be reduced. Moreover, only one of the plurality of shift end members and the reverse lever moves together with the shift member in the axial direction of the control rod by the first interlock means and the second interlock means, and so-called double shift is performed. Can be prevented. Further, the first interlock means and the second interlock means can be configured easily.
  In the shift operation mechanism of the manual transmission, the shift member is extended from the main body portion provided with the first finger portion to the reverse engagement end portion side in the axial direction of the control rod. It is preferable that the second finger portion is provided in the extended portion.
  Accordingly, even if the second finger portion is provided on the shift member, the shift member is not complicated, and a simple configuration can be maintained.
As described above, according to the shift operation mechanism of the manual transmission of the present invention, the reverse lever is provided with the reverse engagement end portion, and the reverse engagement end portion is connected to the engagement end portions of the plurality of shift end members. On the other hand, the shift member is provided with a first finger portion and a second finger portion that are shifted in the axial direction of the control rod. The second finger portion is selectively engaged with an engagement end portion of one shift end member among the plurality of shift end members, and the axial direction of the control rod with respect to the first finger portion in the shift member provided in the position displaced to, a reverse select operation of the selector lever, is configured to engage and the reverse engaging end further first interlock A step and a second interlock means, the second interlock means projecting from the tubular portion to the outside in the radial direction from the tubular portion and engageable with the reverse engagement end portion The second finger portion and the engagement protrusion are engaged with the reverse engagement end by reverse selection operation of a change lever, and the engagement protrusion is The engagement portion is disengaged from the reverse engagement end portion, and the engagement protrusion is engaged with the reverse engagement end portion by the forward shift speed selection operation of the change lever, and the second finger portion is reversely engaged. By arranging the cylindrical portions side by side so as to be disengaged from the end portions, the cost and weight of the speed change operation mechanism can be reduced, and the reverse shift operation of the change lever can be performed. Reduces operating force Rukoto can. Also, so-called double shift can be prevented by the first interlock means and the second interlock means, and furthermore, the first interlock means and the second interlock means can be simply configured.
It is a skeleton figure which shows the structure of the power transmission system of the manual transmission which concerns on embodiment of this invention. It is a figure which shows a shift pattern. It is the figure which looked at the control rod from the horizontal direction perpendicular | vertical with respect to a control rod (figure seen from the left side of FIG. 4). FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 3, showing a state where the change lever is located at the neutral position. FIG. 5 is a cross-sectional view taken along the line V-V in FIG. 3, showing a state where the change lever is located at the neutral position. FIG. 5 is a view corresponding to FIG. 4 and illustrating a state in which the reverse selection operation of the change lever is completed. FIG. 6 is a view corresponding to FIG. 5 and illustrating a state where the reverse selection operation of the change lever has been completed.
  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
  FIG. 1 shows a configuration of a power transmission system of a manual transmission 1 according to an embodiment of the present invention. The manual transmission 1 is a 6-speed forward and 1-reverse manual transmission mounted on a vehicle, and outputs the engine 2 via a clutch 4 that is turned off by a stepping operation of a passenger of the vehicle. A primary shaft 10 connected to a shaft 2a (crankshaft) and extending in the vehicle width direction, and a secondary shaft 20 disposed in parallel to the primary shaft 10 are provided. The primary shaft 10 and the secondary shaft 20 are rotatably supported by the transmission case in a transmission case (not shown). In FIG. 1, 6 is a bearing that rotatably supports the primary shaft 5, and 7 is a bearing that rotatably supports the secondary shaft 20.
  The secondary shaft 20 is connected to a driving wheel (not shown) (a front wheel in this embodiment) via a differential device 70. Specifically, an output gear 28 is provided at the end of the secondary shaft 20 on the engine 2 side, and the output gear 28 meshes with a diff ring gear 71 that is an input gear of the differential device 70. The differential ring gear 71 is provided in a differential case 73 that accommodates the differential mechanism 72 therein so as to rotate integrally with the differential case 73. The differential ring gear 71 and the differential case 73 are supported by bearings 74 so as to rotate coaxially with the left and right axles 75. Then, the rotation of the secondary shaft 20 is transmitted to each axle 75 via the differential ring gear 71 and the differential mechanism 72, and further transmitted from each axle 75 to the drive wheel connected to the axle 75.
  Between the primary shaft 10 and the secondary shaft 20, in order from the engine 2 side, a first gear train G1, a reverse gear train GR, a second gear train G2, a fifth gear train G5, and a sixth gear. A row G6, a 3rd speed gear train G3, and a 4th speed gear train G4 are arranged.
  The first-speed gear train G1 and the second-speed gear train G2 are respectively for the first-speed and second-speed primary gears 11 and 12 fixed to the primary shaft 10 and the first-speed gear train loosely fitted to the secondary shaft 20. And second-speed secondary gears 21 and 22. The 3rd to 6th speed gear trains G3 to G6 are respectively 3rd to 6th speed primary gears 13 to 16 loosely fitted to the primary shaft 10 and 3rd to 6th speed secondary gears fixed to the secondary shaft 20. It is comprised with the gears 23-26.
  A 1-2 speed synchronizer 40 is disposed between the first speed secondary gear 21 and the second speed secondary gear 22 on the secondary shaft 20. Further, a 3-4 speed synchronizer 50 is disposed between the 3rd speed primary gear 13 and the 4th speed primary gear 14 on the primary shaft 10, and the 5th speed primary gear on the primary shaft 10 is also provided. Between the 15 and the 6-speed primary gear 16, a 5-6 speed synchronizer 60 is disposed.
  When a shift operation to a forward shift stage is performed by a change lever (not shown) operated by a vehicle occupant, one of the synchronization devices 40, 50, 60 corresponding to the shift stage that has been shifted. Only the device is operated, so that only the gear train of the shift gear that has been shifted among the gear trains G1 to G6 for the forward gear is selectively placed in the power transmission state.
  For example, when a shift operation to the first speed or the second speed is performed by the change lever, the sleeve 41 of the first-second speed synchronizer 40 moves on the secondary shaft 20 on the engine 2 side (to the first speed). ) Or the counter-engine 2 side (during the shift operation to the second speed), and the loosely fitted gears (the first gear or the second gear secondary gears 21 and 22) are the secondary shaft 20. The gear train of the gear stage (first-speed or second-speed gear trains G1 and G2) that is fixed to and shifted is in the power transmission state.
  When the shift lever is operated to shift to the third speed or the fourth speed, the sleeve 51 of the 3-4 speed synchronizer 50 moves on the primary shaft 10 on the engine 2 side (to the third speed). When sliding to the opposite side of the engine 2 (during the shift operation to the fourth speed), the loosely engaged gears (the third gear or the fourth speed primary gears 13 and 14) on the primary shaft 10 The gear train of the fixed gear stage that has been fixed and shifted (3rd speed or 4th speed gear train G3, G4) is in the power transmission state.
  Further, when the shift lever is operated to shift to the fifth speed or the sixth speed, the sleeve 61 of the 5-6 speed synchronizer 60 moves on the primary shaft 10 on the engine 2 side (to the fifth speed). When sliding to the opposite side of the engine 2 (during shift operation to 6th speed), the loosely engaged gears (5-speed or 6-speed primary gears 15 and 16) on the primary shaft 10 The gear train (5-speed gear train G5, G6-speed gear train G5, G6) that is fixed and shifted is in the power transmission state.
  On the other hand, the reverse gear train GR is a selective sliding gear train, and includes a reverse primary gear 17 fixed to the primary shaft 10, a reverse secondary gear 27 fixed to the secondary shaft 20, the primary shaft 10 and A reverse idle gear 37 is fitted to a reverse idle shaft 30 extending parallel to the secondary shaft 20 so as to be slidable in the axial direction.
  The reverse secondary gear 27 is not directly fixed to the secondary shaft 20 and is provided on the sleeve 41 of the first-second speed synchronization device 40. The sleeve 41 is spline-fitted to a hub 42 fixed to the secondary shaft 20 in the synchronization device 40. Therefore, strictly speaking, the reverse secondary gear 27 provided in the sleeve 41 is fixed in the rotational direction with respect to the secondary shaft 20 but is movable in the axial direction.
  When the reverse shift operation of the change lever is performed, the reverse idle gear 37 is counteracted in the axial direction of the reverse idle shaft 30 from the neutral position where the reverse idle gear 37 is not engaged with the reverse primary gear 17 and the reverse secondary gear 27. It slides to the engine 2 side (refer to the reverse idle gear 37 shown by a two-dot chain line in FIG. 1), and moves to the meshing position where it meshes with the reverse primary gear 17 and the reverse secondary gear 27, whereby the reverse gear train GR enters a power transmission state. The reverse idle gear 37 is moved to the meshing position by a reverse lever 131 (see FIG. 4), as will be described in detail later. Thus, the reverse lever 131 is a lever for setting the manual transmission 1 in the reverse state by the reverse shift operation of the change lever. The positional relationship among the reverse idle gear 37, the reverse primary gear 17 and the reverse secondary gear 27 when viewed from the axial direction of the primary shaft 10 is as shown in FIG. It is located diagonally below the reverse primary gear 17 and to the side of the reverse secondary gear 27. In FIG. 4, the reverse idle gear 37 is located at the neutral position, which is the position on the far side of the paper surface of FIG. 4 with respect to the reverse primary gear 17 and the reverse secondary gear 27. The gear 27 is not meshed.
In the present embodiment, the change lever is operated along the shift pattern shown in FIG. This shift pattern has three rows of forward shift speed shift lanes (for 1-2 speeds in order from the left side of the vehicle) with the vehicle width direction (left-right direction in FIG. 2) as the select direction and parallel to each other at a predetermined interval. The shift lane r1, the 3-4 speed shift lane r2 and the 5-6 speed shift lane r3) and the left of the 1-2 speed shift lane r1 so as to be positioned at one end (left side) in the select direction. It is composed of a reverse speed shift lane r4 provided adjacent to the next. A direction along these shift lanes r1 to r4 is a shift direction, and an operation in the shift direction is a shift operation. In Figure 2, r5 is a neutral lane select operation for operating the change levers in the select direction is performed (also referred to as a select lane). The neutral position is on the intersection of the neutral lane r5 and the shift lane r2 for 3-4 speed. When the change lever is in a position deviating from the neutral position in the neutral lane r5, the change lever is biased so as to return to the neutral position by a biasing means (not shown), whereby the change lever performs a shift operation. In the absence, it is in the neutral position.
  Next, the shift operation mechanism 90 of the manual transmission 1 will be described with reference to FIGS. In FIG. 3, the left side is the engine 2 side, and the right side is the anti-engine side.
  The speed change operation mechanism 90 includes a control rod 100 that extends parallel to the primary shaft 10 and the secondary shaft 20 at a position above the primary shaft 10 in the transmission case. The control rod 100 is supported by the transmission case so as to be rotatable around the axis of the control rod 100 in a state where movement in the axial direction is restricted. Although a detailed configuration is omitted, the control rod 100 is configured to rotate around the axis of the control rod 100 in conjunction with the selection operation of the change lever by the vehicle occupant.
  A shift member 101 is provided on the control rod 100. The shift member 101 has a cylindrical main body 101 a provided around the control rod 100. The shift member 101 (main body 101a) rotates about the axis of the control rod 100 together with the control rod 100, and is slidable (movable) in the axial direction of the control rod 100 on the control rod 100. . Although a detailed configuration is omitted, the shift member 101 (main body 101a) is configured to move on the control rod 100 in the axial direction of the control rod 100 in conjunction with the shift operation of the change lever by the occupant. ing.
  At the height position between the control rod 100 and the primary shaft 10, the shift rod 105 for the 1st to 2nd speed, the shift rod 106 for the 4th speed and the shift rod 107 for the 5th to 6th speed are parallel to the control rod 100. It is arrange | positioned so that it may extend. The shift rods 105 to 107 are supported by the transmission case so as to be slidable in the axial direction of the shift rods 105 to 107.
  A 1-2 speed shift end member 110 is fixed to the 1-2 speed shift rod 105 by a bolt 115, and a 3-4 speed shift end member 111 is fixed to the bolt 3 by a 3-4 speed shift rod 106. The 5-6 speed shift end member 112 is fixed to the 5-6 speed shift rod 107 by a bolt 117. These three shift end members 110 to 112 are shift end members for forward shift speeds.
When the 1-2 speed shift rod 105 slides in the axial direction, a 1-2 speed synchronizer is provided via a 1-2 speed shift fork member (not shown) provided on the 1-2 speed shift rod 105. Forty sleeves 41 slide on the secondary shaft 20 to the engine 2 side or the counter-engine 2 side. When the 3-4 speed shift rod 106 slides in the axial direction, the 3-4 speed shift fork member (not shown) provided on the 3-4 speed shift rod 106 is used for 3-4 speed. The sleeve 51 of the synchronizing device 50 slides on the primary shaft 10 to the engine 2 side or the counter-engine 2 side. Further, when the 5-6 speed shift rod 107 slides in the axial direction, the 5-6 speed shift fork member (not shown) provided on the 5-6 speed shift rod 107 passes through the 5-6 speed shift fork member. The sleeve 61 of the synchronization device 60 slides on the primary shaft 10 to the engine 2 side or the counter-engine 2 side.
  Each of the shift end members 110 to 112 extends from the shift rods 105 to 107 to which the shift end members 110 to 112 are fixed toward the control rod 100, and a tip portion of the shift end members 110 to 112 branches into a bifurcated shape in the axial direction of the control rod 100. The engaging end portions 110a, 111a, and 112a are as follows. The engagement end portions 110a, 111a, and 112a of the three shift end members 110 to 112 are located at the same position in the axial direction of the control rod 100, and around the control rod 100 (in this embodiment, the shift member 101). Around the main body portion 101a) so as to be aligned in the circumferential direction of the control rod 100. That is, the engagement end portion 110a of the 1-2nd speed shift end member 110 and the engagement end portion 111a of the 3rd-4th speed shift end member 111 and the 5-6th speed shift end member in the clockwise order in FIG. 112 engagement end portions 112a are arranged side by side.
  A first finger portion 101b is provided on the main body 101a of the shift member 101 so as to protrude outward in the radial direction of the main body 101a. The first finger portion 101b is a shaft of the control rod 100 and the engagement end portions 110a, 111a, and 112a of the three shift end members 110 to 112 (specifically, between the engagement end portions 110a, 111a, and 112a). Located in the same position in the direction. The first finger portion 101b selectively engages with the engagement end portion of one shift end member among the three shift end members 110 to 112 by the forward shift speed selection operation of the change lever.
  Specifically, when the change lever is in the neutral position (when the 3rd speed or the 4th speed select operation of the change lever is performed), as shown in FIG. It engages with the engaging end 111a of the shift end member 111 for the fourth speed. When the first or second speed select operation of the change lever from the neutral position (select operation to the position of the shift lane r1 for the first or second speed) is performed, the shift member 101 together with the control rod 100 is shown in FIG. By rotating clockwise, the first finger portion 101b is engaged with the engagement end portion 110a of the first-second shift end member 110. Further, when the fifth or sixth speed select operation of the change lever from the neutral position (select operation to the position of the shift lane r3 for 5-6 speed) is performed, the shift member 101 together with the control rod 100 is shown in FIG. Thus, the first finger portion 101b is engaged with the engagement end portion 112a of the shift end member 112 for 5-6 speed.
  Thus, by the forward shift speed selection operation of the change lever, the first finger 101b is engaged with the engagement end of one of the three shift end members 110-112. After the forward shift stage selection operation, when the forward shift stage shift operation of the change lever is performed, the shift end member whose engagement end is engaged with the first finger part 101b is moved to the first finger part 101b. Is pressed in the axial direction of the control rod 100, whereby the shift rod to which the shift end member is fixed slides in the axial direction of the shift rod together with the shift end member. Of the three synchronizers 40, 50, 60, the synchronizer corresponding to the shift fork member provided on the shift rod is operated by the slide of the shift rod in the axial direction.
  The control rod 100 is provided with a first interlock member 121 that rotates around the axis of the control rod 100 together with the control rod 100 and the shift member 101. The first interlock member 121 is fixed to both sides of the control rod 100 in the axial direction of the control rod 100 with respect to the main body 101a of the shift member 101 in the control rod 100, and does not move in the axial direction of the control rod 100.
  The first interlock member 121 has restricting portions 121a located on both sides of the control rod 100 in the circumferential direction with respect to the first finger portion 101b. When the first finger portion 101b is engaged with the engagement end portion of one shift end member among the three shift end members 110 to 112, these restricting portions 121a are engaged with other shift end members. An end (and thus another shift end member) is prevented from moving in the axial direction of the control rod 100 together with the shift member 101, and the first finger portion 101b is one of the three shift end members 110 to 112. When the engagement end portions of the shift end members are not engaged, the engagement end portions 110a, 111a, and 112a (and thus the three shift end members 110 to 112) of the three shift end members 110 to 112 are shifted. 101 is prevented from moving in the axial direction of the control rod 100 together with 101. Accordingly, the first interlock member 121 constitutes a first interlock means.
  For example, as shown in FIG. 4, when the first finger portion 101b is engaged with the engagement end portion 111a of the shift end member 111 for 3-4 speed, the two restriction portions 121a are for 1-2 speed. The engagement end portions 110a and 5 of the shift end member 110 for the first to second speeds are respectively engaged with the engagement end portions 110a of the shift end member 110 and the engagement end portions 112a of the shift end member 112 for the fifth to sixth speeds. The engaging end portion 112a of the -6 speed shift end member 112 (and hence the 1-2 speed shift end member 110 and the 5-6 speed shift end member 112) moves together with the shift member 101 in the axial direction of the control rod. To stop doing. Further, when the shift member 101 is rotated counterclockwise from the state of FIG. 4 and the first finger portion 101b is engaged with the engagement end portion 110a of the shift end member 110 for 1-2 speed, One of the restricting portions 121a is engaged with the engaging end portion 111a of the 3-4 speed shift end member 111 and the engaging end portion 112a of the 5-6 speed shift end member 112, The engagement end portion 111a of the shift end member 111 for 3-4 speed and the engagement end portion 112a of the shift end member 112 for 5-6 speed (by extension, the shift end member 111 for 3-4 speed and 5-6 speed use) The shift end member 112) is prevented from moving in the axial direction of the control rod 100 together with the shift member 101.
  When the shift member 101 is further rotated counterclockwise in FIG. 4 and the first finger portion 101b is not engaged with the engagement end portion of any of the three shift end members 110 to 112 (see FIG. 6), that is, when the reverse selection operation of the change lever is performed, the one restricting portion 121a of the two restricting portions 121a is engaged with the engagement end portions 110a and 111a of the three shift end members 110 to 112. 112a and the engagement end portions 110a, 111a, 112a (and thus the three shift end members 110-112) of the three shift end members 110-112 are moved together with the shift member 101 in the axial direction of the control rod. Stop moving.
  The main body 101a is provided with a selector pin 101c that protrudes radially outward of the main body 101a at a position different from the first finger 101b in the circumferential direction. The selector pin 101 c is inserted into a guide hole 125 a formed in the guide plate 125. The guide plate 125 is supported by the control rod 100 at both ends thereof. However, even if the control rod 100 rotates about its axial center, the guide plate 125 does not rotate with the control rod 100, and the transmission plate is attached to the transmission case. It is fixed.
  The guide hole 125a has the same shape as the shift pattern. The selector pin 101c provided on the shift member 101 (main body 101a) moves within the guide hole 125a in response to the selection operation and shift operation of the change lever. At that time, the selector pin 101c is At each shift stage, the movement of the selector pin 101c is restricted by the side wall portion that forms the guide hole 125a so as to be positioned at predetermined positions in the axial direction and the circumferential direction of the control rod 100. Thereby, the position of the shift member 101 (main body portion 101a) in the axial direction and the circumferential direction of the control rod 100 is accurately determined at each shift speed.
  The reverse lever 131 is located at a position shifted in the axial direction of the control rod 100 with respect to the engagement end portions 110a, 111a, 112a and the first finger portion 101b of the three shift end members 110-112. The reverse lever 131 extends in a direction (vertical direction) perpendicular to the control rod 100 when viewed from the horizontal direction perpendicular to the control rod 100 (as viewed in FIG. 3). 3 shows only a reverse engagement end portion 131c (described later) provided at the upper end portion of the reverse lever 131 (the same applies to FIGS. 5 and 7).
  As shown in FIG. 4, the reverse lever 131 is rotatably supported by a support shaft 132 that is perpendicular to the control rod 100 and extends in the horizontal direction. The support shaft 132 is fixed to the transmission case via brackets 133 at both ends thereof. The reverse lever 131 has an upper extending portion 131a extending upward from a portion around the support shaft 132 and a lower extending portion 131b extending downward. The upper extending portion 131a extends from a portion around the support shaft 132 to a position on the side of the control rod 100, and a tip end portion (upper end portion) thereof is a reverse engagement end portion 131c. The reverse engagement end portion 131c is also bifurcated in the axial direction of the control rod 100, like the engagement end portions 110a, 111a, 112a of the three shift end members 110-112. The reverse engagement end portion 131c is located at a position shifted in the axial direction of the control rod 100 with respect to the engagement end portions 110a, 111a, 112a and the first finger portion 101b of the three shift end members 110-112. Become.
  The lower extending portion 131 b extends from a portion around the support shaft 132 to a position on the side of the reverse idle shaft 30 (side on the secondary shaft 20 side), and a tip portion thereof is at the center of the reverse idle gear 37. A gear engaging portion 131d is provided which is provided integrally with the rotation and is fitted in and engaged with a concave groove portion 38a formed over the entire outer periphery of the boss portion 38 through which the support shaft 132 passes.
  By the reverse shift operation of the change lever, the reverse engagement end portion 131c is moved to the engine 2 side in the axial direction of the control rod 100 (the back side of the paper surface in FIG. 4) by a second finger portion 101e described later. As a result, the reverse lever 131 rotates about the support shaft 132, and the gear engaging portion 131d moves to the side opposite to the engine 2 in the axial direction of the control rod 100 (the front side of the sheet of FIG. 4). Due to the movement of the gear engaging portion 131d, the reverse idle gear 37 slides from the neutral position toward the counter-engine 2 side in the axial direction of the reverse idle shaft 30, and meshes with the reverse primary gear 17 and the reverse secondary gear 27. It will move to a meshing position (manual transmission 1 will be in a reverse state).
  Here, when a reverse shift operation is performed immediately after the vehicle stops from a forward traveling state, noise called gear noise may occur. This is because when the clutch 4 is disengaged and stopped, the primary shaft 10 continues to rotate due to inertia immediately after the clutch 4 is disengaged, and the reverse idle gear 37 is connected to the reverse primary gear 17 rotating together with the primary shaft 10. This is because the teeth of these two gears interfere when trying to mesh. Since the secondary shaft 20 is always drivingly connected to the driving wheel (front wheel), the secondary shaft 20 is stopped together with the driving wheel in a stopped state.
  In the present embodiment, in order to prevent the gear squealing, a predetermined forward gear synchronizer (in this case, 5- A pre-boke mechanism for synchronizing the 6-speed synchronizer 60) is provided, and the operation of this pre-boke mechanism causes the sleeve 61 of the 5-6 speed synchronizer 60 on the primary shaft 10 on the engine 2 side (for the 5th speed). By sliding the gear train G5 to the power transmission state), the rotation due to the inertia of the primary shaft 10 is braked. As a result, before the reverse primary gear 17 meshes with the reverse primary gear 17 and the reverse secondary gear 27, When the primary shaft 10 and the reverse primary gear 17 stop rotating and mesh with each other, Sounds can be prevented.
  The specific configuration of the pre-boke mechanism is the same as that of the pre-boke mechanism disclosed in Patent Document 1, and is therefore omitted here. FIG. 4 shows only the pre-boke pin 141 and the torsion coil spring 142 which are components of the pre-boke mechanism. The pre-boke pin 141 is rotatably supported by the support shaft 132. Both ends of the torsion coil spring 142 are hooked on the pre-boke pin 141 and the reverse lever 131, respectively, and the torsion coil spring 142 causes the pre-boke pin 141 to rotate so that the reverse lever 131 moves the reverse idle gear 37 to the meshing position. It is urged to rotate in a direction opposite to the moving direction. The rotation of the pre-boke pin 141 by the torsion coil spring 142 is restricted by the pressing arm portion 141 a provided on the pre-boke pin 141 coming into contact with the restriction portion 131 e provided on the reverse lever 131. When the reverse lever 131 is rotated by the reverse shift operation of the change lever to move the reverse idle gear 37 to the meshing position, the pressing arm portion 141a is pressed against the restricting portion 131e, and the pre-boke pin 141 is reversed. It rotates around the support shaft 132 together with the lever 131. By rotation of the pre-boke pin 141, the sleeve 61 of the 5-6 speed synchronizer 60 slides on the primary shaft 10 to the engine 2 side, and the rotation due to the inertia of the primary shaft 10 is braked.
  The reverse lever 131 is located on the side opposite to the primary shaft 10 (the left side in FIG. 4) with respect to the pre-boke pin 141 in the direction in which the support shaft 132 extends. As a result, the bending amount of the upper extending portion 131a in the direction in which the support shaft 132 extends is made as small as possible. Further, the upper extending portion 131a and the lower extending portion 131b are hardly bent in the axial direction of the control rod 100.
  In addition to the main body 101a, the shift member 101 has an extending portion 101d extending from the main body 101a toward the reverse engagement end 131c in the axial direction of the control rod 100. A second finger portion 101e that engages with the reverse engagement end portion 131c by a reverse selection operation of the change lever is provided at the extension portion 101d (specifically, a tip portion of the extension portion 101d). That is, the second finger portion 101e is shifted to the position of the shift member 101 in the axial direction of the control rod 100 with respect to the first finger portion 101b (the same position as the reverse engagement end portion 131c in the axial direction of the control rod 100). Is provided.
  When the forward shift speed selection operation of the change lever is completed, as shown in FIGS. 4 and 5, the second finger portion 101e is not engaged with the reverse engagement end portion 131c, and the reverse engagement end portion 131c is not engaged. Located in the upper position. When the reverse selection operation of the change lever is performed, the shift member 101 rotates together with the control rod 100 counterclockwise in FIGS. 4 and 6 (clockwise in FIGS. 5 and 7) to perform reverse selection. When the operation is completed (when the change lever is positioned in the reverse speed shift lane r4), as shown in FIGS. 6 and 7, the second finger 101e is engaged with the reverse engagement end 131c. (Located between the two forks of the reverse engagement end 131c). When a reverse shift operation of the change lever is performed, the reverse lever 131 rotates around the support shaft 132 as described above, and the manual transmission 1 is in the reverse state.
  When the change lever is returned to the start position of the reverse shift operation from the reverse state, the reverse engagement end portion 131c is moved to the side opposite to the engine 2 in the axial direction of the control rod 100 by the second finger portion 101e. As a result, the reverse lever 131 rotates about the support shaft 132 in the direction opposite to that during the reverse shift operation, and the gear engaging portion 131d moves to the engine 2 side in the axial direction of the control rod 100. By the movement of the gear engaging portion 131d, the reverse idle gear 37 returns from the meshing position to the neutral position.
  At the same position as the reverse engagement end portion 131c and the second finger portion 101e in the axial direction of the control rod 100, when the second finger portion 101e is not engaged with the reverse engagement end portion 131c, the reverse engagement end Second interlock means for preventing the portion 131c from moving in the axial direction of the control rod 100 together with the shift member 101 (and thus preventing the reverse lever 131 from rotating about the support shaft 132). A second interlock member 151 is provided.
  Specifically, as shown in FIG. 5, the second interlock member 151 has a cylindrical portion 151a fixed around the control rod 100, and protrudes radially outward from the cylindrical portion 151a, and is connected to the reverse engagement member. An engagement protrusion 151b that can be engaged with the reverse engagement end 131c is provided to prevent the movement of the end portion 131c (the rotation of the reverse lever 131). Similar to the first interlock member 121, the cylindrical portion 151 a rotates around the axis of the control rod 100 together with the control rod 100 and the shift member 101, but does not move in the axial direction of the control rod 100. In the present embodiment, the cylindrical portion 151 a is integrally coupled with the first interlock member 121.
  The second finger portion 101e and the engagement protrusion 151b are configured so that the second finger portion 101e engages with the reverse engagement end portion 131c and the engagement protrusion 151b is the reverse engagement end by the reverse selection operation of the change lever. The engagement protrusion 151b is engaged with the reverse engagement end 131c and the second finger portion 101e is engaged with the reverse engagement end 131c. It arrange | positions along with the circumferential direction of the cylindrical part 151a so that it may become non-engagement.
  That is, as shown in FIGS. 4 and 5 by the forward shift speed selection operation of the change lever, the second finger portion 101e is disengaged from the reverse engagement end portion 131c and the engagement protrusion 151b is reversely engaged. Engage with the end 131c. Due to this engagement, the reverse engagement end portion 131 c cannot move in the axial direction of the control rod 100 together with the shift member 101 (that is, the reverse lever 131 does not rotate around the support shaft 132).
  On the other hand, as shown in FIGS. 6 and 7, by the reverse selection operation of the change lever, the engagement protrusion 151b is disengaged from the reverse engagement end 131c, and the second finger 101e is reverse engaged. It will be engaged with the end 131c. By this engagement, the reverse lever 131 rotates around the support shaft 132 by the reverse shift operation of the change lever, and the manual transmission 1 is in the reverse state.
  Therefore, in this embodiment, the reverse lever 131 is provided with the reverse engagement end portion 131c, and the reverse engagement end portion 131c corresponds to the engagement end portions 110a, 111a, and 112a of the three shift end members 110 to 112. The shift member 101 is provided with a first finger portion 101b and a second finger portion 101e, and the first finger portion 101b is a forward shift stage of the change lever. The select operation selectively engages with an engagement end portion of one shift end member among the three shift end members 110 to 112, and the second finger portion 101 e moves to the first finger portion 101 b in the shift member 101. The position of the control rod 100 shifted in the axial direction (in the axial direction of the control rod 100). Used at the same position as the reverse engagement end portion 131c) and is configured to engage with the reverse engagement end portion 131c by the reverse select operation of the change lever. The reverse shift end member as described above can be eliminated, and the shift member 101 during the reverse shift operation of the change lever moves in the axial direction of the control rod 100 without using the reverse shift end member. The reverse lever 131 can be directly moved by the second finger portion 101 e to move the reverse idle gear 37 in the axial direction of the control rod 100. Further, the reverse engagement end portion 131c and the gear engagement portion 131d of the reverse lever 131 can be positioned at substantially the same position in the axial direction of the control rod 100. As a result, the reverse lever 131 can be twisted. Can be prevented. Therefore, the cost and weight of the speed change operation mechanism 90 can be reduced, and the operation force during the reverse shift operation of the change lever can be reduced.
  In the present embodiment, in the shift member 101, it is necessary to provide the second finger portion 101e in addition to the first finger portion 101b. However, the second finger portion 101e extends from the main body portion 101a. By providing in the part 101d, it can be easily provided in a position shifted in the axial direction of the control rod 100 with respect to the first finger part 101b, and the shift member 101 is not complicated and maintains a simple configuration. be able to. Further, since the position of the second finger portion 101e in the axial direction of the control rod 100 can be freely changed in accordance with the position of the reverse lever 131, the degree of freedom of arrangement of the selective sliding reverse gear train Can be improved.
  The present invention is not limited to the embodiment described above, and can be substituted without departing from the spirit of the claims.
  The above-described embodiments are merely examples, and the scope of the present invention should not be interpreted in a limited manner. The scope of the present invention is defined by the scope of the claims, and all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.
  The present invention is useful for a shift operation mechanism of a manual transmission mounted on a vehicle.
DESCRIPTION OF SYMBOLS 1 Manual transmission 90 Shifting operation mechanism 100 Control rod 101 Shift member 101a Main body part 101b First finger part 101d Extension part 101e Second finger part 110 Shift end member for 1-2 speed (shift end member for forward shift stage)
110a Engagement end 111 3-4 speed shift end member (shift end member for forward speed)
111a Engagement end 112 Shift end member for 5-6 speed (shift end member for forward shift stage)
112a Engagement end 121 First interlock member (first interlock means)
131 reverse lever 131c reverse engagement end 151 second interlock member (second interlock means)
151a Tubular portion 151b Engaging protrusion

Claims (2)

  1. A shift operation mechanism for a manual transmission mounted on a vehicle,
    A control rod that rotates about an axis in conjunction with a select operation of a change lever by a vehicle occupant in a state in which movement in the axial direction is restricted;
    A shift member that rotates about the axis of the control rod together with the control rod, and that moves in the axial direction of the control rod on the control rod in conjunction with a shift operation of the change lever;
    A plurality of shift end members for forward shift speeds arranged so that the engagement ends are arranged in the circumferential direction of the control rod around the control rod;
    A first finger portion that is provided on the shift member and selectively engages with an engagement end portion of one shift end member of the plurality of shift end members by a forward shift speed selection operation of the change lever;
    A reverse lever for turning the manual transmission into a reverse state by a reverse shift operation of the change lever;
    A reverse engagement end provided on the reverse lever and positioned at a position shifted in the axial direction of the control rod with respect to the engagement ends of the plurality of shift end members;
    A second finger portion provided at a position shifted in the axial direction of the control rod with respect to the first finger portion in the shift member, and engaged with the reverse engagement end portion by a reverse select operation of the change lever; ,
    When the first finger portion is engaged with the engagement end portion of one shift end member of the plurality of shift end members, the engagement end portion of the other shift end member is the control member together with the shift member. The plurality of shift end members are prevented from moving in the axial direction of the rod, and when the first finger portion is not engaged with the engagement end portion of any of the plurality of shift end members. First interlocking means for preventing the engagement end of the shift rod member from moving in the axial direction of the control rod;
    When the second finger portion is not engaged with the reverse engagement end portion, a second interface for preventing the reverse engagement end portion from moving in the axial direction of the control rod together with the shift member. Locking means;
    Equipped with a,
    The second interlock means includes a cylindrical portion fixed around the control rod, and protrudes radially outward from the cylindrical portion so as to prevent the movement of the reverse engagement end portion. An engagement protrusion that can be engaged with the end portion;
    The second finger part and the engagement protrusion part are engaged with the reverse engagement end part by the reverse select operation of the change lever, and the engagement protrusion part is the reverse engagement end part. And the engagement protrusion is engaged with the reverse engagement end and the second finger is not engaged with the reverse engagement end. A shifting operation mechanism for a manual transmission, wherein the shifting operation mechanism is arranged side by side in the circumferential direction of the cylindrical portion .
  2. The shift operation mechanism for a manual transmission according to claim 1,
    The shift member includes a main body portion provided with the first finger portion, and an extending portion extending from the main body portion toward the reverse engagement end portion side in the axial direction of the control rod,
    The shift operation mechanism for a manual transmission, wherein the second finger portion is provided in the extended portion.
JP2016105571A 2016-05-26 2016-05-26 Shifting mechanism for manual transmission Active JP6380458B2 (en)

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Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009121656A (en) * 2007-11-19 2009-06-04 Aisin Ai Co Ltd Interlock structure of transmission having plurality of inner levers
JP2010031937A (en) * 2008-07-28 2010-02-12 Toyota Motor Corp Transmission
JP5874651B2 (en) * 2013-01-16 2016-03-02 マツダ株式会社 Manual transmission

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