Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16H—GEARING
  • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
  • F16H59/02—Selector apparatus
  • F16H59/04—Ratio selector apparatus
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16H—GEARING
  • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
  • F16H59/02—Selector apparatus
  • F16H59/04—Ratio selector apparatus
  • F16H2059/048—Ratio selector apparatus with means for unlocking select or shift movement to allow access to reverse gear position

Definitions

• the invention relates to a subset of a manual gearbox of a vehicle, including automotive.
• a manual subassembly comprising a gearshift lever housed in the passenger compartment of the vehicle and connected to a selection device and gearshift.
• the gearbox also includes a gearshift lever retainer in the reverse gear lane when the gear is engaged, which retainer has a trigger integral with the gearshift lever and an integral stop wall. of the vehicle body and likely to cooperate with each other to avoid the accidental passage or disengagement of the reverse ratio of the gearbox by the driver.
• EP 1 1 1276 such a device for retaining the shift lever in the corridor of the reverse gear when the report is engaged.
• the retaining device comprises a trigger secured to the shifting lever, a transverse projecting portion of which is arranged, during the passage of the reverse gear ratio by means of the shifting lever, to be introduced into a longitudinal slide formed in an abutment wall integral with the vehicle body.
• the invention provides a subset of a manual gearbox of a vehicle, including a motor vehicle, comprising a gearshift lever housed in the passenger compartment of the vehicle and connected to a device for selecting and shifting, a retaining device of the shift lever in the reverse gear lane and having a trigger secured to the shifting lever being axially movable along the lever and a fixed wall of stop comprising a slide defined between an outer side wall and an inner side wall located on the side of the shift lever and in which slide can be introduced a transverse projecting portion of the trigger during the passage of the reverse ratio, performed by the movement in a longitudinal direction to the vehicle of the shift lever, and which is characterized in that the oi internal of the slide has its inner side face, located opposite the outer wall of the slide, which is inclined from bottom to top of the inner wall to the outer wall, in that the projecting portion of the trigger has a groove substantially longitudinal in which is engaged the inner wall when the projecting portion is introduced into the slide and in that the lateral face of the groove located opposite the
• the outer wall of the slide has its outer upper edge having a radius of curvature greater than 3.2mm.
• the projecting portion of the trigger comprises an outer transverse protrusion and elastically deformable having a clearance relative to the inner face of the outer wall of the slide when the projecting portion is inserted into the slideway and likely to come into abutment. on this inner face when lateral movement to the outer wall of the shift lever to dampen this displacement.
• the height of the inner wall of the slide is such that it allows the support in abutment against one another of the two lateral faces of the groove of the projecting portion and the inner wall of the slide for a maximum travel of the trigger along the shift lever.
• the two lateral faces of the groove of the protruding portion of the trigger are parallel to the longitudinal direction of the shift lever.
• the bottom of the slide is formed by a portion of the upper inclined ramp of the abutment wall and on which the protruding portion of the trigger slides during the passage of the reverse speed ratio by means of the lever gearshift.
• the trigger is movable between a locking position in which the transverse projecting portion of the trigger is capable of abutting against the stop wall to prevent the selection of the reverse gear made by the displacement of the shift lever according to a direction transverse to the vehicle, and an authorization position in which the transverse projecting portion of the trigger passes over the abutment wall during the selection of the reverse ratio to allow the passage of the reverse gear made by the moving the shift lever in a longitudinal direction to the vehicle.
• the shift lever comprises a manually operable pull ring to allow movement of the transverse protrusion portion of the trigger from its locking position to its select position of the reverse gear ratio.
• the shift lever moves in a grid corridors configured candlestick, the reverse corridor being positioned to the left of the corridor of first and second speeds.
• FIG. 2 is an enlarged side view along the arrow II of Figure 1;
• FIG. 3 is a view similar to that of FIG. 1 and showing the shift lever in the reverse gear selection position;
• FIG. 4 is an enlarged side view along the arrow IV of Figure 3;
• FIG. 5 is a view similar to that of FIG. 1 and showing the shift lever at its position of engagement of the reverse ratio;
• - Figure 6 is an enlarged view along the arrow VI of Figure 5; and - Figure 7 is a reduced view similar to that of Figure 6 and showing a movable trigger of the shift lever occupying its maximum stroke position.
• the subassembly comprises a selection and shifting device (not shown) secured to the housing of the gearbox.
• This device comprises a speed selection lever and a shift lever, both pivotally movable under the action of a shift lever 1 in the passenger compartment of the vehicle via cables or control linkage.
• the subassembly also comprises a selection and shift axis for selection and passage of a speed via the gearshift lever 1 ensuring the pivoting of the selector lever and shift lever respectively. .
• the lever of gearshift 1 To avoid mishandling, for example the engagement of a reverse gear while the vehicle is moving forward, the lever of gearshift 1 must come into selection abutment against the gear ratio to engage, so that the shift lever 1 engages correctly in the desired gear ratio selection corridor to engage.
• the shift lever 1 can move in a grid corridors configured as a candlestick, with for example the reverse lane positioned to the left of the first and second speed lane. This restraint allows, depending on the direction of movement of the desired vehicle, either to ensure the engagement of the first speed or second speed without the risk of engaging the gear ratio, or to hold the gear lever 1 in the reverse gear lane when this gear is engaged in the gearbox.
• the retaining device comprises a trigger 2 secured to the shift lever 1 and mounted axially movable along the lever 1.
• the retaining device also comprises a stop wall 3 integral with the body C of the vehicle and capable of cooperating with the trigger 2 to prevent the accidental passage or disengagement of the reverse ratio of the gearbox by the driver.
• the shift lever 1 comprises an actuating means (not shown), for example a manually operable pull ring, for permitting axial movement along the shift lever 1 of the trigger 2 between a lock position and a reverse gear selection enable position.
• a transverse protruding part 4 in the form of curved beak towards the bottom of the trigger 2 abuts against the abutment wall 3 when the driver engages the shift lever 1 in the selection corridor of the first and second speeds, by moving the shift lever 1 in a direction transverse to the vehicle.
• the selection of the reverse gear ratio is prevented to allow engagement of the first gear or the second gear by moving the shift lever 1 in a longitudinal direction to the vehicle.
• the transverse projecting portion 4 in the form of bent beak of the trigger 2 is in a position such that, when the driver moves the shift lever 1 in a direction transverse to the vehicle symbolized by the stroke C2 in Figure 2, the protruding portion 4 of the trigger 2 passes over the abutment wall 3 and the shift lever 1 is then finds himself engaged in the selection corridor of the reverse gear.
• the projecting portion 4 of the trigger 2 then bears on the upper face 3a of the abutment wall 3, which is preferably inclined in a ramp, as shown in FIG. the reverse ratio is then achieved by moving the shift lever 1 in a longitudinal direction to the vehicle: the projecting portion 5 of the trigger 2 then slides along the upper face 3a of the abutment wall 3 during the passage reverse gear.
• the abutment wall 3 also comprises a substantially longitudinal slide 5 to the vehicle and wherein the transverse projecting portion 4 of the trigger 2 is introduced during the passage of the reverse gear ratio by the driver as shown in Figure 5.
• the bottom 6 of the slideway 5 is formed by a portion of the inclined upper face ramp 3a of the abutment wall 3.
• the slideway 5 is defined between an outer sidewall 7 projecting from the inclined upper face 3a of the stop wall 3 and an inner side wall 8 also projecting from the inclined upper face 3a and located on the side of the shift lever. speeds 1. Both outer and inner walls 7 and 7 are substantially parallel.
• the inner wall 8 of the slide 5 has its inner side face 9, located opposite the outer wall 7 of this slide, which is inclined from bottom to top of the inner wall 8 towards the wall
• the internal lateral face 9 diverges from bottom to top relative to the longitudinal axis A1-A2 lever considering 2 and 6.
• the angle of inclination has the face 9 side of the inner wall 8 relative to the upper inclined face ramp 3a from top to bottom of the inner wall 8 to the outer wall 7 may be 105 ° as shown in Figure 6, but this angle can have different values from when the face 9 is to be inclined as shown in this figure.
• the transverse protruding part 4 of the trigger 2 has a substantially longitudinal groove 10 U-shaped cross section open downwards and whose two side faces 10a are located in two parallel planes to the longitudinal direction A1 - A2 shift lever 1, one of the plans P passing through one of the lateral faces 10a of the groove 10 being shown in FIG. 2.
• the plane P extends substantially parallel to the longitudinal direction of the vehicle and substantially vertically.
• the trigger 2 has one of its flat walls 2a located opposite the abutment wall 3 which is parallel to the end planar face 4a of the beak-shaped projection 5, which faces 2a, 4a are parallel to the two lateral faces 10a of the groove 10.
• the projecting portion 4 of the trigger 2 comprises at the end of its beak-shaped portion an external protuberance 1 1 elastically deformable in the transverse direction and which has a transverse clearance relative to the inner face 7a of the outer wall 7 when the projecting portion 4 is introduced into the slideway 5 as shown in FIG. 6, the inner wall 8 then being housed in the groove 10.
• the outer wall 7 of the slide 5 has its outer upper edge 7b having a radius of curvature greater than 3.2 mm, which prevents contact with the inner wall 8 serving as an abutment.
• the inner wall 8 can be made independently of regulation R21 according to a desired geometry.
• the driver moves the trigger 2 upwardly along the shift lever 1 along a stroke C1 and then moves the lever 1 in a direction transverse to the vehicle to the abutment wall 3 as represented by the stroke C2 to select the reverse lane at the position shown in Figure 3 at which the end of the beak-shaped portion of the projecting portion 4 is above the inclined ramped face 3a of the wall 3.
• the stroke C1 may be between a minimum value of 8mm and a maximum value 1 1 mm according to the force applied by the driver to move the trigger 2 and the stroke C2 is calculated according to the travel of manual transmissions.
• the driver moves the shift lever 1 in a longitudinal direction causing the sliding of the lower end of the beak-shaped portion of the protruding portion 4 on the face 3a of the stop wall 3 for a stroke C1 of the trigger 2 of 8mm until the projecting portion 4 is introduced into the slide 5 as shown in FIG. 6 or, for a stroke C1 of the trigger of 1 1 mm, the lower end of the beak-shaped portion of the projecting portion 4 moves above the inclined face 3a of the stop wall 3 until the projecting portion 4 is engaged in the slideway 5 as shown in FIG.
• the protruding portion 4 of the trigger 2 engaged in the slide 5 against the outer wall 8 can withstand a shifting gear shift lever 1 greater than 50 newtons.
• the invention described above effectively secures the position of the shift lever to its reverse position and it allows the gearbox to improve reliability, quality and avoid encountering customer incidents. , even serious accidents.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
• Gear-Shifting Mechanisms (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=56855712

Family Applications (1)

Country Status (4)

Family Cites Families (9)

• 2016
  • 2016-07-04 FR FR1656364A patent/FR3053429B1/fr active Active
• 2017
  • 2017-06-13 CN CN201780041810.3A patent/CN109477567A/zh active Pending
  • 2017-06-13 WO PCT/FR2017/051516 patent/WO2018007700A1/fr unknown
  • 2017-06-13 EP EP17737625.8A patent/EP3478991A1/fr not_active Withdrawn

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