FR3053429A1 - SUBASSEMBLY OF A MANUAL GEARBOX OF A VEHICLE WITH MEANS FOR SECURING THE LEVER OF SPEED IN REVERSE POSITION - Google Patents

Abstract

The present invention relates to a subset of a manual gearbox of a vehicle with means for securing the shift lever in the reverse position. According to the invention, the inner wall (8) of the slide (5) has an inner lateral face (9), which is inclined from the bottom to the top of the inner wall (8) to the outer wall (7) and when the protruding part (4) of the trigger (2) is introduced into the slide (5), the lateral face (10a) of the groove (10) bears against the inner and inclined lateral face (9) to retain the projecting part (4) in the slide (5) and prevent lateral shifting of the shift lever (1) out of the reverse lane. The invention finds its application in the automotive field.

Description

Holder (s): PEUGEOT CITROEN AUTOMOBILES SA Société anonyme.

Extension request (s)

Agent (s): PEUGEOT CITROEN AUTOMOBILES SA Public limited company.

SUB-ASSEMBLY OF A MANUAL GEARBOX OF A VEHICLE WITH MEANS OF SECURING THE GEAR LEVER IN REVERSE POSITION.

FR 3 053 429 - A1

The present invention relates to a sub-assembly of a manual gearbox of a vehicle with means for securing the gear lever in the reverse position.

According to the invention, the internal wall (8) of the slide (5) has an internal lateral face (9), which is inclined from bottom to top of the internal wall (8) to the external wall (7) and when the protruding part (4) of the trigger (2) is introduced into the slide (5), the lateral face (10a) of the groove (10) is in abutment against the internal lateral face and inclined (9) to retain the protruding part (4) in the slide (5) and prevent lateral movement of the gear change lever (1) outside the reverse gear.

The invention finds its application in the automotive field.

SUB-ASSEMBLY OF A MANUAL GEARBOX OF A VEHICLE WITH MEANS FOR SECURING THE GEAR LEVER IN REVERSE POSITION [0001] The invention relates to a sub-assembly of a manual gearbox of a vehicle, especially automotive.

It is known such a manual sub-assembly comprising a gear change lever housed in the passenger compartment of the vehicle and connected to a gear selection and shifting device. The gearbox also comprises a device for retaining the gearshift lever in the corridor of the reverse gear when this gear is engaged, this retaining device comprising a trigger secured to the gearshift lever and an integral stop wall of the vehicle body and likely to cooperate with each other to avoid the accidental shift or disengagement of the reverse gear ratio of the gearbox by the driver.

[0003] Such a sub-assembly nevertheless has the drawback of not securing the engagement of the reverse gear. Indeed, a force applied transversely to the vehicle on the gearshift lever can induce the disengagement of the gearshift lever despite the presence of the lever retaining device. The driver then believes that the first gear is shifted, while the reverse gear remains engaged in the gearbox. This situation can lead to incidents or even serious accidents.

It is known from document EP 1111276 such a device for retaining the gearshift lever in the corridor of the reverse gear when this gear is engaged. The retaining device comprises a trigger secured to the gear shift lever, a transverse projecting part of which is arranged, when the reverse gear is shifted via the gear shift lever, to be introduced into a longitudinal slide formed in a stop wall secured to the vehicle body.

However, if a transverse force relative to the vehicle is applied to the gearshift lever suddenly, there remains a significant risk of disengagement of the gearshift lever despite the presence of the means for retaining this lever when the reverse gear is engaged. In addition, the designs of the U-shaped longitudinal slide and the protruding beak-shaped protrusion at right angles make it difficult to engage this protruding part in the slide when pivoting the shift lever. gears at its position for selecting and shifting from reverse.

The present invention aims to overcome the above drawbacks of the prior art.

To achieve this object, the invention provides a sub-assembly of a manual gearbox of a vehicle, in particular an automobile, comprising a gearshift lever housed in the passenger compartment of the vehicle and connected to a device. selection and shifting device, a device for retaining the gearshift lever in the corridor of the reverse gear and comprising a trigger secured to the gearshift lever while being axially movable along the lever and a fixed wall of stop comprising a slide delimited between an external side wall and an internal side wall situated on the side of the gear shift lever and into which slide can be introduced a transverse projecting part of the trigger when changing the reverse gear, produced by the displacement in a longitudinal direction to the vehicle of the gear shift lever, and which is characterized in that the internal oi of the slide has its internal lateral face, located opposite the external wall of the slide, which is inclined from bottom to top of the internal wall towards the external wall, in that the projecting part of the trigger has a groove substantially longitudinal in which the internal wall is engaged when the projecting part is introduced into the slide and in that the lateral face of the groove situated opposite the internal lateral face and inclined of the internal wall is in abutment against this internal lateral face and tilted to retain the protruding part in the slide and prevent lateral movement of the gear lever outside the reverse lane.

According to another feature of the invention, the outer wall of the slide has its outer upper edge having a radius of curvature greater than 3.2mm.

Advantageously, the projecting part of the trigger comprises an external transverse and elastically deformable protuberance having a transverse play relative to the internal face of the external wall of the slide when the projecting part is introduced into the slide and capable of coming to bear. on this internal face during a lateral movement towards the external wall of the gear change lever to dampen this displacement.

The height of the internal wall of the slide is such that it allows the support to be pressed against one another of the two lateral faces of the groove of the projection and of the internal wall of the slide for a maximum trigger travel along the shift lever.

Preferably, the two lateral faces of the groove of the projecting part of the trigger are parallel to the longitudinal direction of the gear change lever.

The bottom of the slide is formed by a part of the upper face inclined into a ramp of the abutment wall and on which the projecting part of the trigger slides during the passage of the reverse gear ratio via the lever shifting.

The trigger is movable between a locking position in which the transverse projecting part of the trigger is capable of abutting against the abutment wall to prevent the selection of the reverse gear ratio achieved by the movement of the gear shift lever according to a direction transverse to the vehicle, and an authorization position in which the transverse projecting part of the trigger passes above the abutment wall during the selection of the reverse gear ratio to allow the passage of the reverse gear ratio produced by the displacement of the gear shift lever in a longitudinal direction to the vehicle.

The gearshift lever includes a pull ring that can be actuated manually to allow the movement of the transverse projecting part of the trigger from its locked position to its position for authorizing selection of the reverse gear ratio.

The gear shift lever moves according to a grid of lanes configured in a stanchion, the reverse gear lane being positioned to the left of the first and second gear lane.

The invention relates to a motor vehicle comprising a sub-assembly of a manual gearbox as defined above.

The invention will be better understood, and other objects, characteristics, details and advantages thereof will appear more clearly in the explanatory description which follows, made with reference to the appended drawings given solely by way of example illustrating a embodiment of the invention and in which:

- Figure 1 is a partial perspective view of a gear shift lever of a motor vehicle in its neutral position and located near a device for retaining this lever in the corridor of the reverse gear ;

- Figure 2 is an enlarged side view along arrow II of Figure 1;

- Figure 3 is a view similar to that of Figure 1 and showing the gear shift lever in the position for selecting the reverse gear;

- Figure 4 is an enlarged side view along arrow IV of Figure 3;

- Figure 5 is a view similar to that of Figure 1 and showing the gear shift lever in its position of engagement of the reverse gear;

- Figure 6 is an enlarged view along 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 gear shift lever occupying its maximum stroke position.

With reference to Figures 1 to 7, a sub-assembly of a manual gearbox of a vehicle, in particular a motor vehicle, will now be described.

The sub-assembly includes a gear selection and shifting device (not shown) secured to the gearbox housing. This device comprises a gear selection lever and a gear shift lever, both of which are pivotally movable under the action of a gear shift lever 1 in the passenger compartment of the vehicle via cables or a control linkage. . The sub-assembly also includes a gear selection and shifting axis for selecting and shifting a gear by means of the gear shift lever 1 ensuring the pivoting of the gear selection and shifting levers respectively. .

To avoid mishandling, for example the engagement of a reverse gear while the vehicle is moving in forward gear, the gear shift lever 1 must come into selection stop facing the gear ratio to engage, so that the gear change lever 1 engages correctly in the lane for selecting the desired gear ratio to engage.

It is known to integrate into the vehicle cabin a gearshift lever retaining device 1 in the corridor of the reverse gear, the gearshift lever 1 being able to move along a grid of corridors configured as a stanchion, for example with the reverse corridor positioned to the left of the first and second speed corridor. This retaining device makes it possible, depending on the direction of movement of the desired vehicle, to either ensure the engagement of the first gear or second gear without risking engaging the reverse gear, or to retain the gear shift lever 1 in the reverse gear lane when this gear is engaged in the gearbox.

To do this, the retaining device comprises a trigger 2 secured to the gear shift lever 1 and mounted axially movable along the lever 1. The retaining device also includes a stop wall 3 secured to the body C of the vehicle and capable of cooperating with the trigger 2 to avoid the accidental passage or disengagement of the reverse gear ratio of the gearbox by the driver. In addition, the gear shift lever 1 comprises an actuating means (not shown), for example a pull ring operable manually, to allow axial movement along the gear shift lever 1 of the trigger 2 between a blocking position and an authorization position for selecting the reverse gear.

In the locking position of the trigger 2, a transverse protruding part 4 in the shape of a curved beak towards the bottom of the trigger 2 abuts against the stop wall 3 when the driver engages the gear shift lever 1 in the first and second gear selection lane, by moving the gear change lever 1 in a direction transverse to the vehicle. Thus, the selection of the reverse gear is prevented to allow engagement of the first gear or of the second gear, by displacement of the gear shift lever 1 in a longitudinal direction to the vehicle.

In the authorization position of the trigger 2 by axial movement of the trigger 2 symbolized by the stroke C1 in FIG. 2, the transverse projecting part 4 in the form of a curved beak of the trigger 2 is in a position such that, when the driver moves the gearshift lever 1 in a direction transverse to the vehicle symbolized by the stroke C2 in FIG. 2, the projecting part 4 of the trigger 2 passes over the stop wall 3 and the gearshift lever 1 is then engaged in the corridor for selecting the reverse gear. Once the traction ring has been released by the conductor, the projecting part 4 of the trigger 2 then comes to bear on the upper face 3a of the abutment wall 3, which is preferably inclined in a ramp, as shown in FIG. 3. The passage the reverse gear ratio is then achieved by moving the shift lever 1 in a longitudinal direction to the vehicle: the projecting part 5 of the trigger 2 then slides along the upper face 3a of the stop wall 3 during passage of the reverse gear.

The abutment wall 3 also comprises a slide 5 substantially longitudinal to the vehicle and in which the transverse projecting part 4 of the trigger 2 is introduced during the passage of the reverse gear ratio by the driver as shown in Figure 5. In addition , the bottom 6 of the slide 5 is formed by a part of the upper face inclined in a ramp 3a of the abutment wall 3.

The slide 5 is delimited between an external side wall 7 projecting from the inclined upper face 3a of the abutment wall 3 and an internal side wall 8 also projecting from the inclined upper face 3a and located on the side of the change lever 1. The two outer 7 and inner 8 walls are substantially parallel.

According to the invention, the internal wall 8 of the slide 5 has its internal lateral face 9, located opposite the external wall 7 of this slide, which is inclined from bottom to top of the internal wall 8 towards the wall external 7 In other words, the internal lateral face 9 diverges from bottom to top relative to the longitudinal axis A1-A2 of lever by considering Figures 2 and

6. By way of example, the angle of inclination a of the lateral face 9 of the internal wall 8 relative to the upper surface inclined in a ramp 3a from top to bottom of the internal wall 8 to the external wall 7 can be 105 ° as shown in Figure 6, but this angle can have different values when the face 9 must be inclined as shown in this figure.

The transverse projecting part 4 in the shape of a beak of the trigger 2 has a substantially longitudinal groove 10 with a U-shaped cross section open downwards and whose two lateral faces 10a are located in two planes parallel to the longitudinal direction A1 - A2 of the gearshift lever 1, one of the planes P passing through one of the lateral faces 10a of the groove 10 being shown in FIG. 2. In the neutral position of the gearshift lever 1, the plane P extends substantially parallel to the longitudinal direction of the vehicle and substantially vertically. In addition, the trigger 2 has one of its flat walls 2a situated opposite the abutment wall 3 which is parallel to the flat end face 4a of the beak-shaped projecting part 5, which faces 2a, 4a are parallel to the two lateral faces 10a of the groove 10.

The projecting part 4 of the trigger 2 comprises at the end of its beak-shaped part an external projection 11 elastically deformable in the transverse direction and which has a transverse clearance relative to the internal face 7a of the external wall 7 when the projecting part 4 is introduced into the slide 5 as shown in FIG. 6, the internal wall 8 then being housed in the groove 10.

Because the controls of the gearbox are made to be taken or installed on other vehicle platforms, it is necessary to comply with regulation R21 relating to the impact of the head of the driver or of a passenger of the vehicle on the gearshift lever and symbolized in FIG. 2 by a sphere with a diameter D of 165mm and which must not be in contact on projecting parts of all the components of the gearshift lever 1 having radii of curvature less than 3.2mm, regardless of the position of the gear shift lever in neutral or engagement of any gear ratio.

In the context of compliance with the regulation R21, the outer wall 7 of the slide 5 has its outer upper edge 7b having a radius of curvature greater than 3.2mm, which prevents contact with the inner wall 8 serving as a stop for the projecting part 4 housed in the slide 5 in the reverse gear engagement position of the gear change lever 1. In this way, the internal wall 8 can be produced independently of the regulation R21 according to a desired geometry.

To engage the vehicle in reverse, the driver moves the trigger 2 up along the gear shift lever 1 in a race C1 and then moves the lever 1 in a direction transverse to the vehicle towards the stop wall 3 as represented by the course C2 to select the reversing lane at the position represented in FIG. 3 at which the end of the beak-shaped part of the protruding part 4 is above the inclined ramped face 3a of the wall limit stop 3. The stroke C1 can be between a minimum value of 8mm and a maximum value of 11mm depending on the force applied by the driver to move the trigger 2 and the stroke C2 is calculated according to the strokes of the manual gearboxes.

Thus, when the trigger 2 is moved upwards along the minimum stroke C1 of 8mm to bring the lever 1 to its position for selecting reverse gear following the stroke C2, the lower end of the part in the form of beak of the protruding part 4 bears on the inclined face 3a of the abutment wall 3 and for a maximum stroke C1 of 11 mm, the lower end of the beak-shaped part of the protruding part 4 is located above of the inclined face 3a of the abutment wall 3 as shown in FIG. 4.

To engage the vehicle in reverse, the driver moves the gear shift lever 1 in a longitudinal direction causing the sliding of the lower end of the beak-shaped part of the projecting part 4 on the face 3a of the stop wall 3 for a stroke C1 of the trigger 2 of 8mm until the protruding part 4 is introduced into the slide 5 as shown in FIG. 6 or, for a stroke C1 of the trigger of 11mm, the lower end of the beak-shaped part of the projecting part 4 moves above the inclined face 3a of the abutment wall 3 until the projecting part 4 is engaged in the slide 5 as shown in the figure

7.

When the driver releases the trigger 2 in the position of engagement of the projecting part 4 in the slide 5, the lateral face 10a of the groove 10 naturally bears on the inclined lateral face 9 of the internal wall 8 of the stop wall 3 as shown in Figure 6 to prevent lateral movement of the gear shift lever 1 out of the slide 5 in the opposite direction to the outer wall 7 and, therefore, out of the reverse lane.

For example, the projecting part 4 of the trigger 2 engaged in the slide 5 against the outer wall 8 can withstand a lateral displacement force of the gear shift lever 1 greater than 50 newtons.

It happens that some drivers when reversing the vehicle manipulates the gear shift lever 1 by moving the trigger 2 upwards. To ensure that the lateral face 10a of the groove 10 of the protruding part 4 is held in abutment on the inclined face 9 of the internal wall 8, the height of the internal wall 8 must be such that it allows the abutment of the sides 10a and 9 for the entire stroke of trigger 2 between its two positions minimum of 8mm and maximum of 11mm in order to maintain the gear shift lever in the reverse gear. Maintaining the support of the faces 10a of the groove 10 on the inclined face 9 of the internal wall 8 at the maximum stroke C1 of 11 mm has been shown in FIG. 7.

In the engagement position of the protruding part 4 in the slide 5, it may happen that the gear shift lever 1 is moved laterally towards the outer wall

7. The transverse protuberance 11 then comes to bear elastically on the internal face 7a of the external wall 7 to dampen the movement of the lever 1.

The invention described above effectively secures the position of the gear change lever in its reverse position and it allows the gearbox to gain reliability, in quality and to avoid encountering customer incidents. or even serious accidents.

Claims (10)

1.  Control sub-assembly of a manual gearbox of a vehicle, in particular a motor vehicle, comprising a gear change lever (1) housed in the passenger compartment of the vehicle and connected to a gear selection and shifting device, a gearshift lever retainer (1) in the reverse gear passage and comprising a trigger (2) integral with the gearshift lever (1) being axially movable along the lever (1) and a fixed stop wall (3) comprising a slide (5) delimited between an external side wall (7) and an internal side wall (8) situated on the side of the gear change lever (1) and in which slide (5) a transverse projecting part (4) of the trigger (2) can be introduced during the shifting of the reverse gear, produced by the displacement in a longitudinal direction of the gearshift lever (1), characterized in that the internal wall (8) of the slide (5) has its internal lateral face, (9) situated opposite the external wall (7) of the slide 5), which is inclined from bottom to top of the internal wall (8 ) towards the external wall (7), in that the projecting part (4) of the trigger (2) has a substantially longitudinal groove (10) in which the internal wall (8) is engaged when the projecting part (4) is introduced into the slide (5) and in that the lateral face (10a) of the groove (10) situated opposite the internal and inclined lateral face (9) of the internal wall (8) is in abutment against this lateral face internal and inclined (9) to retain the projecting part (4) in the slide (5) and prevent lateral movement of the gear shift lever (1) outside the reverse lane. 2. Sub-assembly according to claim 1, characterized in that the external wall (7) of the slide has its upper external edge (7b) having a radius of curvature greater than 3.2 mm. 3. Sub-assembly according to claim 1 or 2, characterized in that the projecting part (4) of the trigger (2) has an external transversely protruding and elastically deformable (11) having a transverse clearance relative to the internal face (7a ) of the external wall (7) of the slide (5) when the projecting part (4) is introduced into the slide (5) and capable of coming to bear on this internal face during a lateral movement towards the external wall ( 7) of the gear change lever (1) to dampen this movement. 4. Subassembly one of claims 1 to 3, characterized in that the height of the internal wall (8) of the slide (5) is such that it allows the maintenance in support against one another of the two lateral faces (10a, 9) of the groove (10) of the projecting part (4) and of the internal wall (8) of the slide (5) for a maximum stroke of the trigger (2) along the lever gear change (1). 5. Subassembly according to one of claims 1 to 4, characterized in that the two lateral faces (10a) of the groove (10) of the projecting part (4) of the trigger (2) are parallel to the direction longitudinal (A1-A2) of the gear change lever (1). 6. Sub-assembly according to one of claims 1 to 5, characterized in that the bottom (6) of the slide (5) is formed by a part of the upper face inclined into a ramp (3a) of the abutment wall ( 3) and on which the projecting part (4) of the trigger (2) slides during the passage of the reverse gear ratio via the gear change lever (1). 7. Subassembly according to one of claims 1 to 6, characterized in that the trigger (2) is movable between a locking position in which the transverse projecting part (4) of the trigger (2) is capable of abutting against the abutment wall (3) to prevent the selection of the reverse gear ratio carried out by the movement of the gear change lever (1) in a direction transverse to the vehicle, and an authorization position in which the transverse protruding part ( 4) the trigger (2) passes over the stop wall (3) when selecting the reverse gear to allow the shift of the reverse gear achieved by the movement of the gear shift lever (1) in a longitudinal direction to the vehicle. 8. Subassembly according to claim 7, characterized in that the gear change lever (1) comprises a pull ring operable manually to allow movement of the transverse projecting part (4) of the trigger (2) from its locking position to its position for authorizing selection of the reverse gear. 9. Sub-assembly according to one of claims 1 to 8, characterized in that the gear change lever (1) moves according to a grid of lanes configured in stanchion, the reverse lane being positioned to the left of the lane first and second speed. 10. Motor vehicle comprising a sub-assembly of a manual gearbox according to any one of claims 1 to 9. 1/4 2/4 9 8 3/4 4/4 2a