JP4655844B2 - Shifting mechanism for manual transmission - Google Patents

Description

  The present invention relates to a shift operation mechanism of a manual transmission, and more particularly to an improved structure that reduces noise caused by vibration of a change lever.

  2. Description of the Related Art Conventionally, as a shift operation mechanism of a manual transmission, a mechanism including a first lever, a second lever, a return spring, a stopper pin, and a gate mechanism as in Patent Document 1, for example, has been put to practical use. In this speed change operation mechanism, the substantially spherical pivot portion of the first lever is swingably supported by the transmission, the lower end portion of the first lever is interlocked with the transmission, and the second lever is connected to the first lever. The exterior is movably movable in the axial direction. The second lever is provided between the inner cylinder and the outer cylinder, the inner cylinder that is slidably fitted to the first lever, the outer cylinder that has an operation knob attached to the upper end, and the inner cylinder and the outer cylinder. An annular elastic member fixed to the cylinder.

  A stopper pin is fixed to the upper end portion of the first lever so as to penetrate in the direction perpendicular to the axis, and a pair of guide slits are formed in the inner cylinder of the second lever, which are notched downward from the upper end. Both ends are engaged. The return lever biases the second lever upward with respect to the first lever, the lower ends of the pair of guide slits of the inner cylinder are locked in contact with both ends of the stopper pin, and the second lever It is held in the normal operating position.

  With the second lever held in the normal operating position, the change lever having the first and second levers can be selected over a plurality of forward shift lanes and shifted over a plurality of forward shift speeds. Can be operated. When the change lever is selected from the forward shift lane adjacent to the reverse shift lane (reverse lane) to the reverse lane, the selection operation is prohibited when the second lever is held at the normal operation position by the gate mechanism. However, the selection operation is permitted by depressing the operation knob and moving the second lever downward by a predetermined amount from the normal operation position, and the change lever can be shifted to the reverse gear.

JP 2005-75204 A

  In a shift operation mechanism of a manual transmission such as Patent Document 1, a lower end portion of a guide slit formed in a metal inner cylinder of a second lever abuts on a metal stopper pin fixed to the first lever. Since the second lever is held in the normal operation position, there is a risk that chattering may occur due to rattling of the contact portion between the lower end of the guide slit of the inner cylinder and the stopper pin due to vibration of the transmission. is there.

  The elastic member of the second lever has an effect of improving the operational feeling by reducing the vibration of the operation knob. However, in this elastic member, the first lever inputs to the second lever (inner cylinder) via the stopper pin. Therefore, the action of reducing the vibration of the inner cylinder of the second lever is difficult to obtain, and the contact portion between the lower end portion of the guide slit of the inner cylinder and the stopper pin is rattled due to resonance. There is a high risk that sound will be generated.

  The object of the present invention is to effectively use the elastic member fixed to the inner cylinder and the outer cylinder of the second lever, so that the stopper member can securely hold the second lever in the normal operation position by locking the elastic member. This elastic member directly reduces the vibration input from the first lever via the stopper member, and reliably suppresses rattling and chatter noise caused by holding the second lever in the normal operating position. It is an object of the present invention to provide a speed change operation mechanism for a manual transmission.

According to a first aspect of the present invention, there is provided a shift operation mechanism for a manual transmission which includes a first lever having a pivot portion that is swingably supported by the transmission, and is externally mounted on the first lever so as to be movable in the axial direction. A second lever to which a knob is attached; a return spring that urges the second lever toward the distal end in the axial direction relative to the first lever; and a second lever fixedly provided at the distal end portion of the first lever. A stopper pin that is locked from the front end in the direction and held at the normal operation position, and a guide slit that engages with the stopper pin and guides the second lever relative to the first lever so that the second lever cannot be rotated relative to the first lever. , when the select operation from the lane to the reverse lane adjacent the change lever to the reverse lane having a first, second lever, by a predetermined amount of movement of the second lever from the normal operating position in the axial direction base end side In the shift operation mechanism of the manual transmission including the gate mechanism that allows the select operation, the second lever has an inner cylinder that is slidably fitted to the first lever, and an operation knob. And an annular elastic member fixed to the inner cylinder and the outer cylinder, and the guide slit is formed at an upper end portion of the inner cylinder, and the second lever is in a normal operation position. A gap is formed between the stopper pin and a lower end portion of the guide slit, and the stopper pin engages a contact portion formed at a tip portion of the elastic member to bring the second lever into a normal operation position. It is characterized by holding.

In this speed change operation mechanism, the change lever has first and second levers, the pivot portion of the first lever is swingably supported by the transmission, and the second lever is movable in the axial direction by the first lever. It is exterior. The second lever includes an inner cylinder, an outer cylinder, an annular elastic member fixed to the inner cylinder and the outer cylinder, and a guide slit formed in an upper end portion of the inner cylinder. The lever is slidably fitted on the lever, and an operation knob is attached to the tip of the outer cylinder. The return lever biases the second lever toward the distal end in the axial direction with respect to the first lever, and a stopper pin fixedly provided at the distal end portion of the first lever is attached to the distal end portion of the elastic member of the second lever. The formed contact portion is locked from the front end side in the axial direction, and the second lever is held at the normal operation position. When the change lever is selected from the lane adjacent to the reverse lane to the reverse lane, the gate mechanism prohibits the select operation when the second lever is held at the normal operation position, and the second lever is moved from the normal operation position. The select operation is permitted by moving a predetermined amount toward the base end side in the axial direction.

As described above, the contact portion of the elastic member of the second lever is locked by the stopper pin , so that the second lever is securely held at the normal operation position, and the first member is held by the elastic member via the stopper member. The vibration input from the lever is directly and surely absorbed, thereby reducing the vibration of the inner cylinder of the second lever. Therefore, the rattling and chatter noise caused by holding the second lever in the normal operation position is prevented. Suppressed reliably.

Here, the following configuration can be adopted in the invention of claim 1.
A protruding portion that protrudes toward the distal end side is provided as a contact portion on the distal end side portion of the elastic member. The protruding portion is formed in an annular shape, and an annular member is disposed between the stopper pin and the protruding portion of the elastic member. A protrusion locking portion that protrudes toward the base end side is provided at the base end side portion of the stopper pin , and the protrusion locking portion locks the elastic member. An annular member is disposed between the protruding locking portion of the stopper pin and the elastic member. A protruding portion that protrudes toward the distal end side is provided as a contact portion on the distal end side portion of the elastic member, and the protruding locking portion of the stopper pin locks the protruding portion.

According to the shift operation mechanism of the manual transmission of claim 1, the change lever has the first and second levers, the second lever is slidably fitted on the first lever, and the operation cylinder is operated. The outer cylinder to which the knob is attached and an annular elastic member fixed to the inner cylinder and the outer cylinder are provided, and a stopper pin is fixedly provided at the tip side portion of the first lever, and the guide slit is the second When the lever is in the normal operation position, a gap is formed between the stopper pin and the lower end of the guide slit, and the stopper pin engages the contact portion formed at the tip of the elastic member to operate the second lever normally. Since the elastic member is held at the position, it is possible to reduce the vibration of the operation knob (the outer cylinder of the second lever) and improve the operational feeling .
Furthermore, by effectively using this elastic member, the second lever is securely held in the normal operating position, and the vibration input from the first lever via the stopper pin is directly and surely absorbed by this elastic member, As a result, the vibration of the inner cylinder of the second lever can be reduced, and as a result, rattling and chatter noise caused by holding the second lever in the normal operation position can be reliably suppressed.

According to the shift operation mechanism of the manual transmission of the second aspect, since the protruding portion that protrudes toward the distal end side is provided at the distal end portion of the elastic member as the abutting portion, the stopper pin reliably secures the protruding portion of the elastic member. The second lever can be held in the normal operation position by being locked.

According to the shift operation mechanism of the manual transmission of claim 3, since the projecting portion is formed in an annular shape and the annular member is disposed between the stopper pin and the projecting portion of the elastic member, the second lever is normally operated. While maintaining the position securely, the vibration input from the first lever via the stopper pin is dispersed in the elastic member, whereby the vibration absorbing action of the elastic member that absorbs this vibration can be enhanced.

According to the shift operation mechanism of the manual transmission of the fourth aspect, since the protrusion locking portion that protrudes toward the base end side is provided at the base end side portion of the stopper pin , the protrusion locking portion locks the elastic member. The abutment portion of the elastic member can be reliably locked by the protrusion locking portion of the stopper pin , and the second lever can be held at the normal operation position.

According to the shift operation mechanism of the manual transmission of the fifth aspect, since the annular member is disposed between the protrusion locking portion of the stopper pin and the elastic member, the second lever is securely held at the normal operation position. By dispersing the vibration input from the first lever through the stopper pin to the elastic member, the vibration absorbing action of the elastic member that absorbs this vibration can be enhanced.

According to the shift operation mechanism of the manual transmission of the sixth aspect, the protruding portion that protrudes toward the distal end side is provided as the abutting portion at the distal end side portion of the elastic member, and the protruding locking portion of the stopper pin engages the protruding portion. Since it stops, the protrusion latching | locking part of a stopper pin latches reliably the protrusion part of an elastic member, and can hold | maintain a 2nd lever in a normal operation position.

  The shift operation mechanism of the manual transmission according to the present invention is applied to a vehicle such as an automobile, and a change lever is disposed in a vertical posture on the side of the driver's seat, and the change lever is swingable to the transmission main body. A first lever that is supported; and a second lever that is externally mounted on the first lever so as to be movable in the axial direction, and has an operation knob attached to the tip. The second lever moves upward with respect to the first lever. The change lever can be selectively operated to the reverse lane by being biased and held in the normal operation position, and depressing the second lever from the normal operation position.

  As shown in FIGS. 1 to 3, the shift operation mechanism 1 of the manual transmission includes a change lever 2 that is swingably supported by a transmission main body 10 that is mounted on a vehicle and that is linked to the transmission main body 10. Have. A change lever support portion 11 is integrally formed on the upper portion of the housing of the transmission main body 10 so as to protrude upward, and an upper end portion of the change lever support portion 11 faces the inside of the vehicle. A lever assembly hole 11a is formed in the change lever support portion 11 so as to penetrate vertically, and a synthetic resin support member 12 is fitted into the lever assembly hole 11a.

  The change lever 2 is inserted into the lever assembly hole 11a (the support member 12), and the support member 12 is inserted into the lever assembly hole 11a by the substantially spherical pivot portion 20c in the middle of the lower portion of the change lever 2 in the length direction. The spherical portion 20e at the lower end of the change lever 2 is linked to the transmission main body 10 so that the change lever 2 can be manually shifted. It is configured to be operable along a shift pattern shown in FIG. 4 in which the gears of the machine are switched over to neutral, 1 to 6 and reverse gears.

  This shift pattern is composed of a plurality of forward shift lanes (in this embodiment, the first-second shift lane r1, the second-speed shift lane r1, which are parallel to each other in the select direction (vehicle width direction) and are arranged in parallel at a predetermined interval. 3-4 speed shift lane r2, 5-6 speed shift lane r3) and one end of the select direction (in this embodiment, the left adjacent to 1-2 speed shift lane r1) are provided independently in the shift direction. The rearward shift lane r4 (reverse lane r4) extends, and the neutral lane r5 extends in the select direction connecting the shift lanes r1 to r4.

  As shown in FIGS. 1 to 3, the change lever 2 includes a first lever 20 having the pivot portion 20 c and a spherical portion 20 e, and is externally mounted on the first lever 20 so as to be movable in the axial direction. A second lever 25 having the operation knob 3 attached to a portion (upper end portion), a return spring 30 for urging the second lever 25 toward the axial front end side (upper side) with respect to the first lever 20, and a first lever 20 has a stopper mechanism 35 unique to the present invention for holding the second lever 25 biased upward with respect to 20 in a predetermined normal operation position (position shown in FIG. 2).

  The first lever 20 is configured by integrally forming a connecting shaft portion 20a, an intermediate shaft portion 20b, a pivot portion 20c, a tapered shaft portion 20d, and a spherical portion 20e from above. The connecting shaft portion 20a has a length that is approximately half the total length of the first lever 20, and the connecting shaft portion 20a protrudes above the lever assembly hole 11a of the change lever support portion 11 and is connected to the connecting shaft portion 20a. 2 The lower part of the lever 25 is packaged.

  A control rod 13 that is long in the front-rear direction is supported on the transmission body 10 so as to be rotatable and movable in the axial direction, and a connecting member 14 is connected to the control rod 13. An intermediate member 15 made of synthetic resin is fitted into the recessed portion 14a opened on the upper side of the connecting member 14 so as to be slidable up and down, and the spherical portion 20e of the first lever 20 is inserted into the recessed portion 14a via the intermediate member 15. It is connected.

  When the change lever 2 is operated in the select direction in the neutral lane r5, the control rod 13 is rotated. When the change lever 2 is operated in the shift direction in each of the shift lanes r1 to r5, the control rod 13 is moved in the front-rear direction. Along with this, the gear stage of the manual transmission is switched over to the neutral, 1 to 6 gear stages, and the reverse gear stage.

  Overhanging portions 14b are provided at the upper end portion of the connecting member 14 so as to project to the left and right sides, and a pair of return rods 16 capable of pressing the overhanging portions 14b from below are provided. A return spring 17 that biases the projecting portion 14b is provided, so that the change lever 2 can cross a predetermined neutral position in the neutral lane r5 (for example, the 3-4 speed shift lane r2 and the neutral lane r5 intersect). Position).

  The second lever 25 includes an inner cylinder 26 slidably fitted on the connecting shaft portion 20 a of the first lever 20, an outer cylinder 27 to which the operation knob 3 is attached, and the inner cylinders 26 and 27. An annular elastic member 28 made of rubber (or made of synthetic resin) is disposed and fixed to the inner cylinder 26 and the outer cylinder 27. The inner cylinder 26 has substantially the same length as the connecting shaft portion 20 a of the first lever 20, and the lower end portion of the inner cylinder 26 is the upper end of the intermediate shaft portion 20 b having a larger diameter than the connecting shaft portion 20 a of the first lever 20. It can be locked at the part.

  The outer cylinder 27 includes a lower large-diameter cylindrical portion 27a, an intermediate tapered cylindrical portion 27b, and an upper small-diameter cylindrical portion 27c. The lower large-diameter cylindrical portion 27a has a diameter that is about twice that of the inner cylinder 26, and is disposed outside the inner cylinder 26. An elastic member 28 is interposed between the lower large-diameter cylindrical portion 27a and the inner cylinder 26. Is provided. The upper small diameter cylindrical portion 27c is inserted and screwed into the operation knob 3 from the lower side.

  The return spring 30 is formed of a compression coil spring and serves as a spring receiving portion. The flange portion 26a formed at the lower end portion of the inner cylinder 26 and the upper end of the pivot portion 20c having a larger diameter than the intermediate shaft portion 20b of the first lever 20 It is armored by the intermediate shaft part 20b between the two parts.

As shown in FIGS. 2, 3, 5, and 6, the locking mechanism 35 includes a stopper pin 40 , which is fixedly provided at a distal end portion of the first lever 20 (connection shaft portion 20 a) , and an elastic member 28. And an annular member 42 (for example, a washer 42) disposed between the stopper pin 40 and the contact portion 41 of the elastic member 28.

The stopper pin 40 is fixed to the first lever 20 in a penetrating manner so as to pass through its axis in the direction perpendicular to the axis, and both end portions of the stopper pin 40 protrude outward. A pair of guide slits 26b are formed symmetrically at the upper end portion of the inner cylinder 26 of the second lever 25 and cut downward by a predetermined length from the upper end, and both end portions of the stopper pin 40 are engaged with these guide slits 26b. the second lever 25 is non-rotatably and axially movably guided relative to the first lever 20.

  In the locking mechanism 35, both end portions of the stopper pin 40 protrude to the outside of the inner cylinder 26 and are positioned above the elastic member 28. An annular projecting portion 28 a projecting toward the distal end side is integrally provided as the contact portion 41 at the distal end side portion of the elastic member 28. This protrusion 28a is formed in an annular shape.

The annular member 42 is fitted on the inner cylinder 26 and has a diameter equal to or greater than the length of the stopper pin 40 and the diameter of the protruding portion 28a. Then, both end portions of the stopper pin 40 urge the contact portion 4 1 (projecting portion 28 a) of the elastic member 28 of the second lever 25 urged toward the tip end side in the axial direction by the return spring 30 via the annular member 42. The second lever 25 is held at the normal operation position by being locked from the front end side in the axial direction. The guide slit 26b is formed at the upper end portion of the inner cylinder 26 of the second lever 25, and when the second lever 25 is in the normal operation position , a slight gap is formed between the stopper pin 40 and the lower end portion of the guide slit 26b. It is formed as follows .

  As shown in FIGS. 2 and 3, the change lever 2 is provided with a detent mechanism 45 for imparting a moderation feeling to the push-down operation of the second lever 25 from the normal operation position. The detent mechanism 45 includes a through hole 46 formed in a direction orthogonal to the connecting shaft portion 20 a of the first lever 20, a pair of spheres 47 fitted in the through hole 46, and a pair of spheres 47 in the through hole 46. A compression coil spring 48 disposed between them and a pair of spheres 47 have a pair of sphere fitting holes 49 formed on the inner surface of the inner cylinder 26 of the second lever 25 so as to be engageable.

  As shown in FIGS. 1 to 3, in the shift operation mechanism 1 of the manual transmission, the change lever 2 is selected from the 1-2 speed shift lane r1 adjacent to the reverse shift lane r4 to the reverse shift lane r4. When the operation is performed, the selection operation is prohibited when the second lever 25 is held at the normal operation position, and the selection operation is performed by moving the second lever 25 from the normal operation position to the axial base end side by a predetermined amount. An allowable gate mechanism 50 is provided.

  The gate mechanism 50 is provided on a fixed gate portion 52 provided on a frame plate-like gate member 51 fixed to the upper end surface of the change lever support portion 11 with a bolt 51 a and a flange portion 26 a on the lower end portion of the inner cylinder 26. The movable gate portion 53 is provided. In a state where the second lever 25 is held at the normal operation position, the fixed gate portion 52 and the movable gate portion 53 are at the same height position, and the fixed gate portion 52 abuts on the movable gate portion 53 so that the selection operation is performed. Is prohibited.

  When the second lever 25 is moved by a predetermined amount from the normal operation position toward the axial base end side, the movable gate portion 53 is positioned below the fixed gate portion 52. In this state, the movable gate portion 53 is fixed gate. The selection operation is allowed by passing under the portion 52.

The operation and effect of the shift operation mechanism 1 of the manual transmission will be described.
The change lever 2 has first and second levers 20 and 25, the pivot portion 20c of the first lever 20 is supported by the transmission main body 10 so as to be swingable, and the spherical portion 20e is interlocked and connected to the transmission main body 10. The second lever 25 is externally mounted on the first lever 20 so as to be movable in the axial direction. The second lever 25 includes an inner cylinder 26, an outer cylinder 27, and an annular elastic member 28 fixed to the inner cylinder 26 and the outer cylinder 27, and the inner cylinder 26 is slidable on the first lever 20. The operation knob 3 is attached to the tip of the outer cylinder 27.

  The return lever 30 biases the second lever 25 toward the front end in the axial direction with respect to the first lever 20, and the stopper pin 40 fixedly provided at the front end portion of the first lever 20 by the locking mechanism 35. Both end portions engage the contact portion 41 formed at the distal end portion of the elastic member 28 of the second lever 25 from the distal end side in the axial direction via the annular member 42, so that the second lever 25 is brought into the normal operation position. Hold. When the change lever 2 is selected from the first-second speed shift lane r1 to the reverse shift lane r4, the selection operation is prohibited when the second lever 25 is held at the normal operation position by the gate mechanism 50. The select operation is allowed by moving the two levers 25 from the normal operation position to the base end side in the axial direction by a predetermined amount.

  Since the stopper pin 40 engages the contact portion 41 formed at the distal end portion of the elastic member 28 via the annular member 42 to hold the second lever 25 in the normal operation position, the elastic knob 28 has the operation knob 3. Although it is possible to improve the operational feeling by reducing the vibration of the (outer cylinder 27 of the second lever 25), the elastic member 28 is used effectively to ensure that the second lever 25 is in the normal operation position. The vibration input from the first lever 20 via the stopper pin 40 is directly and surely absorbed by the elastic member 28, whereby the vibration of the inner cylinder 26 of the second lever 25 can be reduced. .

Further, provided the protruding portion 28a that protrudes distally to the distal portion of the elastic member 28, wherein the abutting portion 4 1, further projections 28a so as to form the annular protrusion of the stopper pin 40 and the elastic member 28 Having arranged the annular member 4 2 between 28a, the stopper pin 40 is sealed securely engage the protrusion 28a of the elastic member 28, it is possible to hold the second lever 25 in the normal operating position, moreover By dispersing the vibration input from the first lever 20 through the stopper pin 40 to the elastic member 28, the vibration absorbing action of the elastic member 28 that absorbs this vibration can be enhanced. As a result, rattling and chatter noise caused by the stopper pin 40 engaging and holding the second lever 25 (elastic member 28) in the normal operation position can be reliably suppressed.

  In addition, about the protrusion part 28a, you may comprise by the some division | segmentation protrusion part arrange | positioned at an appropriate space | interval in the circumferential direction, without making it cyclic | annular. Further, the protruding portion 28 a may be integrally formed with the elastic member 28, or an elastic member corresponding to the protruding portion 28 a may be separately fixed to the elastic member 28. The annular member 42 may be formed of an elastic member.

  Next, modified embodiments in which the locking mechanism 35 of the first embodiment is changed will be described in the second to fifth embodiments. In addition, the same code | symbol is attached | subjected and demonstrated to the same thing as Example 1. FIG.

  As shown in FIG. 7, the locking mechanism 35 </ b> A is obtained by omitting the annular member 42 in the locking mechanism 35 of the first embodiment, and is provided with a stopper pin fixedly provided at a tip side portion of the first lever 20. 40. The elastic member 28 has a projecting portion 28a provided in an annular shape so as to project to the front end side, and the stopper pin 40 directly locks the projecting portion 28a of the elastic member 28 from the front end side in the axial direction. Thus, the second lever 25 is held at the normal operation position.

  In addition, about the protrusion part 28a, you may comprise by the some division | segmentation protrusion part arrange | positioned at an appropriate space | interval in the circumferential direction, without making it cyclic | annular. In this case, the protrusion 28 a is positioned below the stopper pin 40. Further, the protruding portion 28a may be integrally formed with the elastic member 28, or an elastic member corresponding to the protruding portion 28a may be separately fixed to the elastic member 28.

  As shown in FIG. 8, the locking mechanism 35 </ b> B is obtained by omitting the protruding portion 28 a of the elastic member 28 in the locking mechanism 35 of the first embodiment, and is fixedly provided at the tip side portion of the first lever 20. The stopper pin 40 and the contact member 41B provided in a flat ring shape without protruding toward the tip side at the tip end portion of the elastic member 28, and the annular member disposed between the stopper pin 40 and the contact portion 41B 42, the stopper pin 40 locks the contact portion 41B of the elastic member 28 from the tip end side in the axial direction via the annular member 42, and holds the second lever 25 in the normal operation position.

  The annular member 42 is omitted, and both end portions of the stopper pin 40 directly engage the contact portion 41B of the elastic member 28 from the front end side in the axial direction so as to hold the second lever 25 in the normal operation position. May be. In this case, the height position of the contact portion 41B of the elastic member 28 is set higher than the base end portion of the guide slit 26a.

  As shown in FIG. 9, the locking mechanism 35 </ b> C has a stopper pin 40 </ b> C fixedly provided at the distal end portion of the first lever 20 and a flat annular shape without protruding toward the distal end side at the distal end portion of the elastic member 28. 41C, an annular member 42 disposed between the stopper pin 40C and the contact portion 41C, and a pair of ring-shaped protruding locking portions 44 at both ends of the stopper pin 40C. It is fitted and fixed in a press-fit manner, and a lower end portion of the projecting locking portion 44 is provided so as to project to a proximal end side portion of the stopper pin 40C, and a pair of projecting locking portions 44 are annular members. The contact portion 41C of the elastic member 28 is locked from the front end side in the axial direction via 42, and the second lever 25 is held in the normal operation position. Since the protrusion locking portion 44 is annular, the lower end portion of the protrusion locking portion 44 protrudes toward the base end side of the stopper pin 40C even when the stopper pin 40C rotates.

  In addition, the protrusion latching | locking part 44 may be comprised with a metal, and may be comprised with members, such as elastic rubber or a synthetic resin. Further, the annular member 42 is omitted, and the projecting engagement portion 44 directly engages the contact portion 41C of the elastic member 28 from the front end side in the axial direction so as to hold the second lever 25 in the normal operation position. Also good.

  As shown in FIG. 10, the locking mechanism 35 </ b> D is provided in an annular shape so as to protrude to the distal end side of the stopper pin 40 </ b> D fixedly provided at the distal end side portion of the first lever 20 and the distal end side portion of the elastic member 28. And a ring-shaped member 42 disposed between the stopper pin 40D and the protruding portion 28a, and a pair of ring-shaped protruding engaging portions 44 are press-fitted on both ends of the stopper pin 40D. When fitted and fixed, the lower end portions of the projecting locking portions 44 are provided so as to project toward the proximal end side of the proximal end portion of the stopper pin 40D, and these projecting locking portions 44 are axially arranged via the annular member 42. The protrusion 28a of the elastic member 28 is locked from the distal end side, and the second lever 25 is held at the normal operation position.

  In addition, the present invention can be implemented with other modifications than those disclosed in the above-described embodiments, and the shift operation of a manual transmission installed in various automobiles and various vehicles other than automobiles. Applicable to mechanism.

It is a perspective view of the speed change operation mechanism of the manual transmission of Example 1. It is a longitudinal cross-sectional view of a speed change operation mechanism (normal time). It is a longitudinal cross-sectional view of a speed change operation mechanism (during reverse operation). It is a figure which shows a transmission pattern. It is a longitudinal cross-sectional view of a locking mechanism. FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 5. It is a longitudinal cross-sectional view of the locking mechanism of Example 2. 6 is a longitudinal sectional view of a locking mechanism according to Embodiment 3. FIG. FIG. 6 is a longitudinal sectional view of a locking mechanism according to a fourth embodiment. FIG. 10 is a longitudinal sectional view of a locking mechanism according to a fifth embodiment.

DESCRIPTION OF SYMBOLS 1 Transmission operation mechanism 2 Change lever 3 Operation knob 10 Transmission main body 20 1st lever 20c Pivot part 25 2nd lever 26 Inner cylinder 27 Outer cylinder 28 Elastic member 28a Projection part 30 Return springs 35, 35A-35D Locking mechanism 40, 40C, 40D Stopper pins 41, 41B, 41C Abutment portion 42 Annular member 44 Projection locking portion 50 Gate mechanism

Claims (6)

A first lever having a pivot portion that is swingably supported by the transmission; a second lever that is mounted on the first lever so as to be movable in the axial direction; A return spring that biases the second lever toward the distal end in the axial direction, and a second spring that is fixedly provided at the distal end portion of the first lever and is locked from the distal end side in the axial direction and held in the normal operating position. A stopper pin that engages with the stopper pin, a guide slit that guides the second lever relative to the first lever so that it cannot rotate relative to the first lever, and is movable in the axial direction, and a change lever having the first and second levers is reversed. When performing a select operation from the lane adjacent to the lane to the reverse lane, the gate allows the select operation by moving the second lever from the normal operation position to the axial base end side by a predetermined amount. In the transmission operating mechanism and a structure,
The second lever has an inner cylinder slidably fitted to the first lever, an outer cylinder to which an operation knob is attached, and an annular elastic member fixed to the inner cylinder and the outer cylinder. And
The guide slit is formed at the upper end portion of the inner cylinder and when the second lever is in a normal operation position, a gap is formed between the stopper pin and the lower end portion of the guide slit,
The stopper pin is a shift operation mechanism of a manual transmission, wherein the stopper pin holds a second lever at a normal operation position by engaging a contact portion formed at a tip portion of the elastic member.   The shift operation mechanism of the manual transmission according to claim 1, wherein a protruding portion that protrudes toward a distal end side is provided as a contact portion at a distal end side portion of the elastic member. The shift operation mechanism for a manual transmission according to claim 2, wherein the protrusion is formed in an annular shape, and an annular member is disposed between the stopper pin and the protrusion of the elastic member. The shift of the manual transmission according to claim 1, wherein a protrusion engagement portion protruding toward the proximal end is provided at a proximal end portion of the stopper pin , and the protrusion engagement portion engages an elastic member. Operation mechanism. The shift operation mechanism for a manual transmission according to claim 4, wherein an annular member is disposed between the protruding locking portion of the stopper pin and the elastic member. The protrusion part which protrudes to the front end side is provided in the front end side part of the said elastic member as the said contact part, The protrusion latching | locking part of the said stopper pin latches this projection part. Shifting mechanism for manual transmission.

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