JP2013039869A - Wrong operation prevention device of manual transmission - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the operational feeling at the operation and increase the part durability in a wrong operation prevention device when reverse of the manual transmission is selected.SOLUTION: The reverse inhibition mechanism that restricts the select operation to a reverse shift gate position of a shift lever that performs the gear shift operation of the manual transmission comprises a stopper 28, a lock piece 29, a return spring, a locking piece 31, and a restriction part. In the wrong operation prevention device of the manual transmission that includes a structure where a buffer member 33 is disposed between an end face 40 of the lock piece 29 and an end face 34 of the stopper 28, the shapes of the end face 40 of the lock piece 29 to which a buffer member 33 contacts and the end face 34 of the stopper 28 to which the buffer member 33 contacts are formed in the waveforms that curve to the axial direction of the shift lever respectively.

Description

  The present invention relates to a device for preventing erroneous operation of a manual transmission, and in particular, to improve the operational feeling during operation of a reverse inhibit mechanism that prevents the manual transmission from being erroneously operated in reverse while the vehicle is running. The present invention relates to an improved erroneous operation preventing device for a manual transmission.

In manual transmissions, the shift lever of the shift lever device is selected from the neutral position to each speed shift gate position along the select gate, and each speed shift gate is operated to shift to each speed position to change the speed to each speed. To do. For example, in the case of a 6-speed manual transmission, select the shift lever from the neutral position along the select gate to the 1st, 2nd, 6th or 6th, or reverse shift gate position. The first-speed / second-speed shift gate is shifted to the first speed by shifting to the first speed position.
The shift lever device includes an erroneous operation preventing device that prevents the manual transmission from being erroneously operated in reverse while the vehicle is running. Some erroneous operation preventing devices include a reverse inhibit mechanism that restricts a selection operation of a shift lever that performs a shift operation to a reverse shift gate position.

  In a conventional erroneous operation prevention device, as a reverse inhibit mechanism, a lock piece is arranged on the outer periphery of the shift lever so as to be slidable in the axial direction, a lock piece is provided on the lock piece, and the reverse of the shift lever is brought into contact with the lock piece. There is a method of providing a restricting portion that restricts a select operation to the shift gate position. If this misoperation prevention device does not go through the process of pulling up the lock piece of the reverse inhibit mechanism against the return spring, the lock piece stops at the position where it comes into contact with the restricting portion, and the shift lever is selectively operated to the reverse shift gate position. This prevents the reverse gear shifting operation. (Japanese Patent Laid-Open No. 2007-308082)

JP2007-308082

In the erroneous operation preventing device disclosed in the above publication, the lock piece of the reverse inhibit mechanism is usually provided on the shift lever by a return spring (when the shift lever is not operated or when the shift lever is operated to set the forward shift position). The stopper is pressed against the stopper and the lock piece is in a position where it comes into contact with the restricting portion.
When shifting the shift lever along the select gate to the reverse shift gate position in order to perform a reverse gear shifting operation, pull the lock piece away from the stopper and pull the lock piece from the position where it comes into contact with the restricting portion. The shift lever can be selected to the reverse shift gate position. The shift lever that has been selected to the reverse shift gate position can shift the manual transmission to reverse by shifting the reverse lever to the reverse position.
When the lock lever is shifted to the reverse position, when the lock piece is released, the lock piece moves toward the stopper by the urging force of the return spring, so that the lock piece presses against the sliding surface on the upper part of the restricting portion. ing. When the shift lever that has been shifted to the reverse position is returned from the reverse position to the neutral position, the lock piece does not need to slide on the sliding surface of the restricting part and the lock piece needs to be lifted. A reverse shift gate position that intersects with the select gate can be returned from the reverse position, and can be returned to the neutral position along the select gate.
At this time, the lock piece is pulled back to the stopper portion side by the urging force of the return spring from the height position at which the lock piece presses and contacts the upper sliding surface of the restricting portion, so that it faces the stopper portion of the lock piece. The end surface and the end surface facing the lock piece of the stopper portion collide with each other.
For this reason, when the shift lever is returned from the reverse position to the neutral position, a loud noise is generated due to the collision between the lock piece and the stopper, and the vibration due to the collision is transmitted to the hand operating the shift lever, thereby reducing the operational feeling. It will be. Normally, when operating from the reverse position to the neutral position, the vehicle is stopped at the time of parking, and it is in a quiet state, so that the generated sound is more conspicuous. Further, the collision between the lock piece and the stopper portion reduces the durability of the shift lever component.
As a countermeasure against this, in the erroneous operation preventing device, as shown in FIG. 9, the reverse inhibit mechanism 101 includes a stopper portion 107 disposed on the end surface 104 of the lock piece 103 provided with the lock piece 102 and the lever shaft 106 of the shift lever 105. Some have a structure in which a buffer member 109 is disposed between the end face 108 and the impact sound. However, since the end face 104 of the lock piece 103 and the end face 108 of the stopper 107 are formed as flat and parallel end faces, the flat end face 104 and the end face 108 are instantaneously contacted with each other at the time of collision. The impact due to the collision could not be sufficiently buffered.

  An object of the present invention is to improve the operational feeling during operation and improve the durability of parts in a device for preventing erroneous operation during reverse selection of a manual transmission.

  The present invention is a reverse inhibit mechanism that restricts a select operation to a reverse shift gate position of a shift lever that performs a shift operation of a manual transmission and prevents an erroneous shift operation to reverse during traveling of the vehicle, The reverse inhibit mechanism includes an annular stopper portion arranged on the shift lever, a lock piece arranged coaxially with the shift lever and arranged to be slidable in the axial direction of the shift lever, and the lock piece as a stopper A return spring urging toward the part, a lock piece provided on the lock piece, and the shift lever so as to restrict the selection operation of the shift lever to the reverse shift gate position in contact with the lock piece. A release knob installed on the upper part of the lock piece. When the lock piece is moved up from the position in contact with the restricting portion by pulling up by movement, the shift lever can be selected to the reverse shift gate position, and the shift lever is returned from the reverse shift gate position to the neutral position. The lock piece moves toward the stopper portion by the biasing force of the return spring and returns to a position where the lock piece comes into contact with the restricting portion, and a buffer member is interposed between the end surface of the lock piece and the end surface of the stopper portion. In the erroneous operation preventing device for a manual transmission having the arranged structure, the shape of the end face of the lock piece that contacts the buffer member and the end face of the stopper portion that contacts the buffer member is set in the axial direction of the shift lever, respectively. It is formed into a curved waveform.

  The erroneous operation preventing device for a manual transmission according to the present invention is configured so that the lock piece returning by the urging force of the return spring collides with the stopper portion by corrugating the end surfaces of the lock piece and the stopper portion that contact the buffer member. Impact can be mitigated. For this reason, the erroneous operation preventing device can reduce noise generated when the shift lever is returned from the reverse position to the neutral position, and can reduce vibrations to the driver's hand operating the shift lever. The operational feeling can be improved. Moreover, the durability of the shift lever component can be improved by reducing the impact.

1A is a front view of the shift lever device, FIG. 1B is a side view of the shift lever device, and FIG. 1C is a plan view of the shift lever device. (Example) FIG. 2 is an explanatory diagram of a shift pattern by the shift knob. (Example) FIG. 3 is a perspective view of the shift lever device. (Example) FIG. 4 is an enlarged perspective view of the shift lever. (Example) FIG. 5A is a front view of the shift lever when the reverse select operation is restricted by the reverse inhibit mechanism, and FIG. 5B is a front view of the shift lever when the reverse select operation restriction is released by the reverse inhibit mechanism. (Example) 6A is a cross-sectional view of the lock piece and the shift lever when the reverse-select operation is restricted by the reverse inhibit mechanism, and FIG. 5B is a cross-sectional view of the lock piece and the shift lever when the reverse-select operation restriction is released by the reverse inhibit mechanism. It is. (Example) 7A is an explanatory diagram of a shift pattern by the shift knob, FIG. 7B is a side view of the lock piece portion when the reverse select operation is restricted by the reverse inhibit mechanism, and FIG. 7C is a reverse select operation by the reverse inhibit mechanism. It is a side view of the lock piece part at the time of regulation cancellation | release. (Example) FIG. 8 is an enlarged side surface portion in a state where the lock piece and the stopper portion are in contact with each other via the buffer member. (Example) FIG. 9 is an enlarged side surface portion in a state where the lock piece and the stopper portion are in contact with each other via the buffer member. (Conventional example)

  Embodiments of the present invention will be described below with reference to the drawings.

1 to 8 show an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a shift lever device of a manual transmission mounted on a vehicle. The shift lever device 1 supports a shift lever 3 on a base member 2 so as to be selectable and shiftable.
The base member 2 includes two side walls 5 and 6 which are directed on the bottom wall 4 in the front-rear direction of the vehicle and are arranged in parallel in the left-right direction of the vehicle, and the upper wall 7 is provided above the two side walls 5 and 6. I have. A through hole 8 that penetrates the shift lever 3 is formed in the upper wall 7. The shift lever 3 is provided with a shift knob 10 attached to the upper end of the lever shaft 9, and the lower portion of the lever shaft 9 is disposed between the through hole 8 of the upper wall 7 and between the two side walls 5, 6. The lower end of each is pivotally supported by two side walls 5 and 6 by a pivotal support 11 so as to be rotatable in the shift direction and the select direction.
In the shift lever 3, a select shaft 12 that protrudes outward from the side wall 5 is attached to a lever shaft 9 that is above the shaft support portion 11. A support shaft 13 is attached to the outside of the side wall 5 so as to be positioned behind the select shaft 12. A select lever 15 is rotatably supported on the support shaft 13 with a spring 14 sandwiched between the support shaft 13 and the side wall. The select lever 15 is rotatably connected to the end portion on the front side of the support shaft 13, and one end of the select cable is connected to the lower end portion of the support shaft 13. The other end of the select cable is connected to the select mechanism of the manual transmission. The shift lever 3 has a shift arm 16 attached to the lower end of the lever shaft 9 so as to protrude downward from the shaft support portion 11. One end of the shift cable is connected to the lower end of the shift arm 16. The other end of the shift cable is connected to the shift mechanism of the manual transmission.

The manual transmission has a forward speed of 1st to 6th speed and a reverse speed of reverse. The shift lever device 1 has a shift pattern as shown in FIG. 2 in order to shift the manual transmission from 1st to 6th speed and reverse. The shift pattern includes a select gate 17 extending in the left-right direction centered on the neutral position: N, and a first-speed / second-speed shift gate 18 and a third-speed shift extending in the front-rear direction sequentially from the left end of the select gate 17 toward the right side. A 4-speed shift gate 19 and 5-speed / 6-speed shift gate 20 are arranged, and a reverse shift gate 21 extending rearward is arranged at the right end of the select gate 17.
In the shift pattern, the position at which the 1st and 2nd speed shift gate 18 communicates with the select gate 17 is the 1st and 2nd speed shift gate position 22, and the position at which the 3rd and 4th speed shift gate 19 communicates with the select gate 17 is 3. The speed / fourth speed shift gate position 23 (neutral position: N) is also set, and the position where the fifth speed / sixth speed shift gate 20 communicates with the select gate 17 is the fifth speed / sixth speed shift gate position 24, and the reverse shift gate 21 The position where the switch contacts the select gate 17 is set as a reverse shift gate position 25.
The first-speed / second-speed shift gate 18 has a first-speed position: 1 and a second-speed position: 2 at both ends with the first-speed / second-speed shift gate position 22 in between. The third-speed / fourth-speed shift gate 19 has a third-speed position: 3 and a fourth-speed position: 4 on both ends with the third-speed / four-speed shift gate position 23 interposed therebetween. The fifth-speed / sixth-speed shift gate 20 includes a fifth-speed position: 5 and a sixth-speed position: 6 on both ends with the fifth-speed / six-speed shift gate position 24 in between. The reverse shift gate 21 is provided with a reverse position: R at an end portion on the rear side of the reverse shift gate position 25.
The manual transmission selects the shift lever 3 of the shift lever device 1 from the neutral position: N (third speed / fourth speed shift gate position 23) along the select gate 17 to each speed shift gate position 22 to 25. In the speed shift gates 18 to 21, a shift operation is performed to each speed (1st to 6th speed, reverse) by shifting to each speed position: 1 to 6 and: R.

As shown in FIGS. 3 and 4, the shift lever device 1 is provided with an erroneous operation prevention device 26 that prevents the manual transmission from being erroneously operated in reverse while the vehicle is running. The erroneous operation prevention device 26 includes a reverse inhibit mechanism 27 that restricts the selection operation of the shift lever 3 that performs a shift operation to the reverse shift gate position 25.
The reverse inhibit mechanism 27 includes an annular stopper 28 disposed near the upper wall 7 of the lever shaft 9 of the shift lever 3, and is disposed coaxially with the lever shaft 9 of the shift lever 3. A lock piece 29 slidably disposed in the axial direction, a return spring 30 for urging the lock piece 29 toward the stopper portion 28, and a lock piece 31 provided on the right side of the lower part of the lock piece 29 A restricting portion 32 disposed on the upper wall 7 on the right side of the shift lever 3 so as to restrict the select operation of the shift lever 3 to the reverse shift gate position 25 in contact with the lock piece 31; 29 and a buffer member 33 for alleviating the collision between the stopper portion 28.
As shown in FIG. 6, the annular stopper portion 28 includes an end surface 34 at the upper end on one side in the axial direction, and includes a cylindrical fixing portion 35 extending from the end surface 34 in the axial direction. A protrusion 36 extending in the axial direction is provided on the outer periphery of the fixed portion 35. The stopper portion 28 is fixed by fitting the fixing portion 35 to the lever shaft 9.
The lock piece 29 includes a release knob 37 at the upper end on one side in the axial direction, and the return spring is compressed and deformed with respect to the shift knob 10 at the upper end of the lever shaft 9 in an annular housing space 38 in the release knob 37. 30 is arranged. The lock piece 29 includes a cylindrical sliding portion 39 that is slidably fitted to the fixing portion 35 of the stopper portion 28 at the lower portion on the other side in the axial direction, and the stopper portion 28 at the lower end on the other side in the axial direction. An end face 40 is provided to face the end face 34 of the first end. A groove portion 41 extending in the axial direction and slidably engaged with the protrusion 36 is provided on the inner periphery of the sliding portion 39. The lock piece 29 can slide in the axial direction on the lever shaft 9 of the shift lever 3 and cannot rotate in the circumferential direction by engaging the protrusion 36 of the stopper portion 28 with the groove portion 41 of the sliding portion 39. It is arranged and urged toward the stopper portion 28 by the return spring 30.
The lock piece 31 includes an extension 42 that protrudes downward on the outermost side on the right side. The extension 42 has a side surface 43 and a lower end surface 44. The restricting portion 32 includes a restricting surface 45 that comes into contact with the side surface 42 of the extension portion 42 of the lock piece 31 on the left side, and is slidably in contact with the lower end surface 44 of the extension portion 42 of the lock piece 31 at the upper portion. A surface 46 is provided.
The buffer member 33 is disposed between the end surface 40 of the lock piece 29 and the end surface 34 of the stopper portion 28. The shapes of the end surface 40 of the lock piece 29 that contacts the buffer member 33 and the end surface 34 of the stopper portion 28 that contacts the buffer member 33 are each formed in a waveform that curves in the axial direction of the shift lever 3.

As shown in FIGS. 5 (A) and 6 (A), the erroneous operation preventing device 26 holds the lock piece 29 by a biasing force of the return spring 30 of the reverse inhibit mechanism 27 in a state where the release knob 37 is released. The side face 43 of the extension part 42 of the lock piece 31 is moved to a position where it comes into contact with the restriction surface 45 of the restriction part 32.
The erroneous operation preventing device 26 can be selected even when the shift lever 3 is selected toward the reverse shift gate position 25 as shown in FIG. As shown in FIG. 7B, the lock piece 31 is brought into contact with the restricting portion 32 to restrict the movement of the shift lever 3 to the reverse shift gate position 25, so that an erroneous operation to the reverse position: R is prevented. Can do.

As shown in FIGS. 5 (B) and 6 (A), the erroneous operation preventing device 26 manually lifts the release knob 37 of the reverse inhibit mechanism 27 and moves the side surface 43 of the extension 42 of the lock piece 31 to the restricting portion 32. When it is separated from the position in contact with the regulating surface 45, the lower end surface 44 of the extension portion 42 of the lock piece 31 is moved to a position above the sliding surface 46 of the regulating portion 32.
As shown in FIG. 7B, the erroneous operation preventing device 26 raises the release knob 37 when the shift lever 3 is selected from the neutral position: N to the reverse shift gate position 25 along the select gate 17. Since the lock piece 31 is moved to a position where it does not come into contact with the restricting portion 32, the shift lever 3 can be selected to the reverse shift gate position 25. The shift lever 3 that has been selected to the reverse shift gate position 25 can be shifted to the reverse position: R along the reverse shift gate 21 to shift the manual transmission to reverse.

When the release lever 37 of the lock piece 29 is released in the state where the shift lever 3 is shifted to the reverse position: R, the erroneous operation preventing device 26 moves the lock piece 29 toward the stopper portion 28 by the urging force of the return spring 30. As a result, the lower end surface 44 of the extension portion 42 of the lock piece 31 is pressed against the sliding surface 46 on the upper portion of the restriction portion 32.
When the shift lever 3 that has been shifted to the reverse position: R is returned to the neutral position: N, the erroneous operation preventing device 26 has the lower end surface 44 of the lock piece 31 of the restricting portion 32 as shown in FIG. Since the sliding surface 46 is slid, it is not necessary to lift the lock piece 29 with the release knob 37. The shift lever 3 can return from the reverse position: R to the reverse shift gate position 25 along the reverse shift gate 21 and return to the neutral position: N along the select gate 17 without operating the release knob 37.
When the shift lever 3 is returned to the neutral position N, the lock piece 31 of the lock piece 29 comes out of contact with the sliding surface 46 of the restricting portion 32, and the lock piece 29 is moved to the stopper portion 28 side by the urging force of the return spring 30. It moves and returns to the position where the lock piece 31 comes into contact with the restricting portion 32.
At this time, the lock piece 29 is pulled back to the stopper portion 28 side by the urging force of the return spring 30 from the height position at which the lock piece 31 is pressed against the sliding surface 46 on the upper portion of the restricting portion 32. The end surface 40 of 29 and the end surface 34 of the stopper part 28 collide.

In the erroneous operation preventing device 26, the buffer member 33 is disposed between the end surface 40 of the lock piece 29 and the end surface 34 of the stopper portion 28, and the end surface 40 of the lock piece 29 and the buffer member 33 are in contact with the buffer member 33. The shape of the end surface 34 of the stopper portion 28 is formed in a waveform that curves in the axial direction of the shift lever 9.
As a result, the erroneous operation preventing device 26 corrugates the end surface 40 of the lock piece 29 and the end surface 34 of the stopper portion 28 that come into contact with the buffer member 33, so that the lock piece 29 that returns by the urging force of the return spring 30 is The impact at the time of collision with 28 can be reduced.
For this reason, the erroneous operation preventing device 26 can reduce noise generated when the shift lever 3 is returned from the reverse position: R to the neutral position: N, and vibration to the hand of the driver who operates the shift lever 3. The operational feeling can be improved. Moreover, the durability of the shift lever component can be improved by reducing the impact.
In the above-described embodiment, the lock lever 29 can be pulled up to the reverse shift gate position 25 by pulling up the lock piece 29 with the release knob 37, but the lock piece 29 is pushed in with the release knob 37. Thus, the shift lever 3 can be configured to be select-operated to the reverse shift gate position 25.

  This invention is intended to improve the operational feeling during operation and improve the durability of parts in the reverse operation selection device for manual transmission, but not only during reverse selection, but also prevents erroneous operation when selecting other gears. This device can also be applied to improve operational feeling during operation and to improve component durability.

DESCRIPTION OF SYMBOLS 1 Shift lever apparatus 2 Base member 3 Shift lever 16 Select gate 21 Reverse shift gate 25 Reverse shift gate position 26 Incorrect operation prevention device 27 Reverse inhibit mechanism 28 Stopper part 29 Lock piece 30 Return spring 31 Lock piece 32 Restriction part 33 Buffer member 34 Stopper End face 37 of part 28 Release knob 40 End face 42 of lock piece 29 Extension part 45 Restricting surface 46 Sliding surface

Claims (1)

  A reverse inhibit mechanism that restricts a select operation to a reverse shift gate position of a shift lever that performs a shift operation of a manual transmission and prevents an erroneous shift operation to reverse during traveling of the vehicle, the reverse inhibit mechanism Is an annular stopper portion arranged on the shift lever, a lock piece arranged coaxially with the shift lever and arranged to be slidable in the axial direction of the shift lever, and the lock piece toward the stopper portion. A return spring to be urged, a lock piece provided on the lock piece, and arranged on the side of the shift lever so as to contact the lock piece and restrict the selection operation of the shift lever to the reverse shift gate position. The release knob that is installed on the top of the lock piece is manually pulled up. By moving the lock piece from the position in contact with the restricting portion, the shift lever can be selected to the reverse shift gate position, and when the shift lever is returned from the reverse shift gate position to the neutral position, the return is performed. The lock piece is moved to the stopper portion side by the biasing force of the spring and returned to a position where the lock piece comes into contact with the restricting portion, and a buffer member is disposed between the end surface of the lock piece and the end surface of the stopper portion. In the erroneous operation preventing apparatus for a manual transmission having a structure, the shape of the end face of the lock piece that contacts the buffer member and the end face of the stopper portion that contacts the buffer member is curved in the axial direction of the shift lever, respectively. An apparatus for preventing erroneous operation of a manual transmission, characterized by being formed into a waveform.

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