JPH02199359A - Shift lever mechanism - Google Patents

Abstract

PURPOSE:To make it possible to prevent fatigue even though speed shift manipulation is repeated during a long distance drive, by providing a spring means which urges a shift lever to rotate in a direction in which the rotation of the shift lever is promoted with such a tendency of rotation that the shift lever is rotated from a neutral position toward any one of rotational ends. CONSTITUTION:When a shift lever is held at a neutral position 8, a ball 14 is pressed against the outer surface of a notch plate 11 at a center of a flat section 18 of the plate 11, that is the position 17 at which the locus 16 of movement of the ball crosses a line from the position 8. When the shift lever is subjected to such a tendency that it is rotated toward any one of rotational ends 6, 7 from the position 8, the ball 14 moves on the locus 16 toward a recess 20 or 19. When the ball 14 starts to enter into the recess 20, 19, shifting off from the flat section 18, the ball 14 tends to reach the rotational end 6, 7 at which the recess 20, 19 are deepest, being pressed by a compression coil spring 13. Accordingly, the shift lever can be surely pushed into the rotational end 6, 7 with a small force after the ball 14 shifting from the flat section 18.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a shift lever mechanism for changing gears of an automobile transmission.

[Prior Art] A shift lever that has been commonly used in the past is pivotally supported so as to be rotatable between one rotation end and the other rotation end, and the shift lever is rotated between the two rotation ends. When the shift lever is in either position of the moving end, the gear change gear of the transmission is in an engaged state, and when the shift lever is in a neutral position set at the center between the two rotating ends, the gear change gear is disengaged. .

When operating the shift lever to change the meshing of the transmission gears, if the shift lever is placed halfway between the neutral position and the end of rotation, the transmission gears will be in a partially meshed state and the car will run, so the gears may There is a risk of damage resulting in an accident. For this reason, the shift lever must be firmly pushed into one of its rotational ends.

By the way, in order to push the shift lever from the neutral position to one of the rotation ends, when the shift lever is rotated from the neutral position toward the rotation end, the shift lever is actively rotated in that direction. If the force is automatically generated, the force required to push the shift lever to its rotation end can be gradually reduced, making it possible to operate the shift lever extremely easily.

Inside the transmission, a notch is provided in the drive rod that operates the meshing of the gear group, and a small steel ball, etc. is pressed into this notch using the elasticity of a spring to ensure that the neutral position is maintained. Some did. In such a transmission, the shift lever is incidentally pulled toward the neutral position when the shift lever is returned to the neutral position, but the shift lever is rotated to the rotation end where the gears are in mesh. There was no push to do so.

In addition, providing notches, springs, steel balls, etc. used at the neutral position on the drive rod in the transmission at rotational ends other than the neutral position may weaken the drive rod or complicate the transmission. This was virtually impossible due to the large external size.

[Problem to be solved by the invention]

As explained above, in the conventional shift lever mechanism, when the shift lever is to be rotated to any rotation end, a biasing force is applied that actively rotates the shift lever toward the rotation end. There was nothing to do.

For this reason, if a shift operation in which the shift lever is reliably pushed into one of the operating ends is continuously and repeatedly performed during long-distance driving, the arm operating the shift lever becomes fatigued.

This invention provides a shift lever with a mechanism that generates a force that actively rotates the shift lever toward the rotation end when the shift lever begins to rotate toward one of the rotation ends.
It is an object of the present invention to provide a shift lever mechanism which is provided in a vehicle and can reliably push a shift lever to its rotation end without causing fatigue even if the shift operation is repeated during long-distance driving.

[Means for Solving the Problems] The shift lever mechanism of the present invention is pivotally supported so as to be rotatable between one rotation end and the other rotation end, and the shift lever mechanism is pivoted so as to be rotatable between one rotation end and the other rotation end, and the transmission a shift lever that engages the transmission gear and disengages the transmission gear at a neutral position set at the center between the two rotation ends; and a shift lever that disengages the transmission gear from the neutral position toward either rotation end. The shift lever is characterized by comprising a spring means that applies a rotational force to the shift lever in a direction that promotes the rotational tendency when the shift lever is given a rotational tendency.

[Operation co-movement] When the shift lever is given a tendency to rotate from the neutral position toward either end of rotation, the tendency of the shift lever to rotate is promoted by the spring means, and the shift lever can be rotated with a small operating force. can be pushed into the rotating end.

[Example〕 Embodiments of the present invention will be described below based on the drawings.

1 to 4 show a first embodiment of the present invention, and FIG. 2 is a perspective view showing the whole.

In FIG. 2, the lower part of the shift lever 1 has a bifurcated portion 2, and this bifurcated portion 2 is pivotally supported on a rolling frame 4 by a pin 3.

The bin 3 is located on the pivot center 5 of the shift lever 1, and the shift lever 1 is located between one pivot end 6 at the front and the other pivot end 7 at the rear. It can be rotated back and forth around 3. A neutral position 8 is set at the center between one rotation end 6 and the other rotation end 7.

The rolling frame 4 is supported on the floor of the automobile so as to be able to swing from side to side with respect to a rolling center 9 set in the longitudinal direction. The shift lever 1 swings from the neutral position 8 to an appropriate position to the left or right with reference to the rolling center 9, and then turns to one of the rotation ends 6, 7 and is pushed in. When the shift lever 1 is at the 221 tral position 8, the gear change gear of the transmission (not shown) is disengaged, and the shift lever 1 is at the rotation end 6.
7, the speed change gear becomes in mesh.

A cylindrical ball socket lO is fixed inwardly to the forked part 2 at a position below the bin 3 on the left side in FIG. On the side of 4, there is a notch plate 11
is fixed with a set screw 12 (see FIGS. 1 and 3).

A compression coil spring 13 and a ball 14 are inserted into the cylindrical ball socket IO as shown in FIGS. The ball 14 is pressed against the surface of the notch plate 11 with a force of 13. As mentioned above, when the shift lever 1 is rotated between the rotation ends 6 and 7 around the rotation center 5, the ball 1
4 is pressed against the notch plate 11 along an arcuate ball movement locus 16 (FIG. 3) centered around the rotation center 5 and whose radius is the distance between the center of the ball socket 10 and the rotation center 5. It will move between the rotation ends 6 and 7 in a state where it is held.

The surface of the notch plate 1■ has flat sections 18 on both sides of the point 17 where the ball 14 contacts when the shift lever 1 is in the neutral position 8, as shown in FIGS. 1 and 3. , on both sides of the flat section 18, recesses 19.20 centered on the ball movement locus 1B are provided toward the rotation end 6.7. When viewed from the front, the recess 19.20 has a teardrop shape as shown in FIG. It is the deepest.

In the apparatus shown in FIGS. 1 to 3 described above, when the shift lever 1 is placed at the neutral position 8, the bone 14 is located at the center of the flat section 18 of the notch plate 11, that is, between the ball movement trajectory 16 and the neutral position 8. It is pressed against the surface of the notch plate 11 at a point 17 where the lines intersect. When the shift lever 1 is given a tendency to rotate from the neutral position 8 to the rotation end 6.7, the ball 14 moves along the ball movement trajectory IB into the recess 20.
Or move towards 19. When the ball 14 leaves the flat section 18 and begins to enter the recess 20.19, the ball 14 is pushed by the compression coil spring 13 and reaches the rotation end 6.7 where the recess 20.19 is deepest. shall be. For this reason, a force is applied to the shift lever 1 to rotate it to the rotation end 6.7, so after the ball 14 leaves the flat section, a small operating force is required to move the shift lever 1 to the rotation end 6.7. 7 can be pushed in securely.

The recesses 19, 20 provided in the notch plate 11 may be in the form of vertical grooves that gradually become deeper as they move away from the flat section 18, as shown in FIG.
The four parts 19 and 20 may be directly provided at the corresponding positions of the rolling frame 4 by press molding.

5 to 7 show a second embodiment of the present invention, and the same parts as in FIG. 2 are designated by the same reference numerals.

As shown in Fig. 6, the bifurcated part 2 at the bottom of the shift lever 1 is short on the left side in Fig. 6 and long on the right side, both of which are pin 3.
It is pivotally supported on the rolling frame 4 by. The rolling frame 4 has set screws 22 at both ends of the leaf spring 21.
．． 22, and the shorter fork 12
The lower end surface 23 of is brought into contact with the intermediate portion of the plate spring 2[.

As shown in FIGS. 5 and 7, the leaf spring 21 is formed into a substantially U-shape when viewed from the side, and is provided with a protrusion 24 in the center that gently protrudes upward. Both sides have a gentle concave portion 25.2B. When the shift lever 1 is rotated between the rotation ends 6 and 7 around the rotation center 5, the lower end surface 23 of the bifurcated portion 2 is centered around the rotation center 5, and the lower end surface 23 and It moves between the rotation ends 6 and 7 along an arc-shaped lower end surface movement locus 27 whose radius is the distance between the rotation center 5 and the rotation center 5 while being pressed from below by the leaf spring 21 .

In the device shown in FIGS. 5 to 7, the shift lever
1 is placed in neutral position 8, the fifth
As shown in the figure, the lower end surface of the bifurcated portion 2 is pressed from below by the convex portion 24 of the leaf spring 21. When the shift lever 1 is given a tendency to rotate from the neutral position 8 to the rotation end 6.7, the lower end surface 23 of the bifurcated portion 2
moves toward the recess 2B or 25 along the lower end surface movement locus 27. When the lower end surface 23 comes off the convex portion 24 and begins to enter the concave portion 26.25, the leaf spring 21 is displaced upward by its own elasticity. Therefore, the inclined surface between the protrusion 24 and the recess 2B of the leaf spring 21 or the inclined surface between the protrusion 24 and the recess 25 presses the lower end surface 23 obliquely upward. Therefore, a force is applied to the shift lever 1 to rotate it to the rotation end 6.7,
The shift lever 1 can be reliably pushed into the rotation end 6.7 with a small operating force, and when the rotation end 6.7 is reached, the lower end surface 23 of the bifurcated portion 2 enters the recesses 2B and 25 of the leaf spring 21. Movement of the shift lever 1 becomes restricted.

8 to 10 show a third embodiment of the present invention, and the same parts as in FIGS. 5 and 6 are designated by the same reference numerals.

As shown in FIG. 9, the bifurcated portion 2 at the bottom of the shift lever 1 is
The left side in FIG. 9 is short and the right side is long, both of which are pivoted to the rolling frame 4 by the bin 3. The front and rear parts of the rolling frame 4, which sandwich the short forked part 2, have grooves 2 as shown in FIGS. 8 and 10.
The spring holder 29.29 with a set screw 30.3
The grooves 28 and 28 of the receiver are arranged to face each other, and both ends of the leaf spring 31 are fitted into the grooves 28 and 28, and the receiver is fixed to the lower side of the short fork 2. A leaf spring 31 is held. The leaf spring 31 is shown in FIGS. 8 and 10.
As shown in the figure, a convex portion 3 that gently protrudes upward in the center
2 is provided, and both sides of the convex portion 32 are sloped surfaces that are gently machined.

At the lower end of the shorter forked part 2, a pad 3 shown in FIG.
3 is attached to the pad 33 so that the convex portion 32 of the leaf spring 31 is released from the lower end surface 34 of the pad 33. When the shift lever 1 is rotated between the rotation ends 6 and 7 about the rotation center 5, the lower end surface 34 of the pad 33 is rotated as shown in FIG.
moves between the rotation ends 6 and 7 along a lower end surface movement locus 27 centered around the rotation center 5 and having a radius equal to the distance between the center of the lower end surface 34 and the rotation center 5.

In the apparatus shown in FIGS. 8 to 10, when the shift lever 1 is placed in the neutral position 8, the lower end surface 34 of the pad 33 is pressed against the leaf spring 3 as shown in FIG.
It is pressed downward by the convex portion 32 of No. 1. When the shift lever 1 is given a tendency to rotate in any direction from the neutral position 8 to the rotation end 6.7, the lower end surface 34 of the pad 33 moves along the lower end surface movement locus 27. When the lower end surface 34 comes off the convex portion 32 of the leaf spring 31, the leaf spring 31 is displaced upward by its own elasticity. Therefore, one of the gently descending slopes on both sides of the convex portion 32 of the leaf spring 31 presses the lower end surface 34 of the pad 33 obliquely upward, so that the shift lever 1 has a rotating end 6. 7 is applied, and the shift lever 1 can be reliably pushed into the rotation end 6.7 with a small operating force.

11 to 13 show a fourth embodiment of the present invention, and the same parts as in FIG. 2 are designated by the same reference numerals.

In the eleventh part, the lower part of the shift lever 1 has a bifurcated portion, and the bifurcated portion 2 is pivotally supported on the rolling frame 4 by a pin 3. A rocking pin 35 shown in FIG. 12 is fixed to the lower end of the forked section 2 on the near side in FIG. 11 in a state that projects inward of the forked section 2. A groove 36 is provided on the outer periphery of the protruding end of the swing bottle 35, and is adapted to lock the swing bin side bent end 38 of the clip spring 37.

As shown in FIG. 11, a fixed pin 39 is fixed in a protruding state on the surface of the rolling frame 4 on the near side slightly below the position where the rotation center 5 passes. A groove 40 is formed on the outer periphery of the protruding end of the fixed bottle 39 as shown in FIG.
is provided to lock the bent end 41 of the clip spring 37 on the fixed pin side. As is clear from FIG. 13, the swing bin 35 is located away from the center of rotation 5 of the shift lever 1, and the fixed bin 39 is located closer to the center of rotation 5 by a distance Ml. There is. Due to its elasticity, the clip spring 37 maintains a shape in which the swing pin side bent end 38 and the fixed pin side bent end 41 are separated from each other. When locking the ends of the clip spring 37 to the swing bottle 35 and the fixed pin 39, the swing bottle side bent end 38 and the fixed pin side bent end 4 resist the elasticity of the clip spring 37.
1 are brought close to each other, and each is locked to the swing pin 35 and the fixed pin 39 as shown in FIG. Therefore, due to the elasticity of the clip spring 37, a force is applied to the swinging bin 35 in the direction of separating it from the fixed bin 39, and a reaction force is applied to the fixed bin 39.

Move shift lever 1 from neutral position 8 to rotation end 6.7
When the swinging bin 35 is rotated toward the
The pin moves along an arcuate swing pin movement locus 42 centered around the center of rotation 5 and whose radius is the distance between the center of the swing bottle 35 and the center of rotation 5. Therefore, when the shift lever 1 is rotated from the neutral position 8 to the rotation end 6.7, the distance between the centers of the fixed bin 39 and the swing bin 35 is greater than that at the neutral position 8 by a distance difference Δg. become.

Since the clip spring 37 exerts a force on the swing pin 35 to separate it from the fixed pin 39, there is no tendency to rotate the shift lever 1 from the neutral position 8 towards either end of rotation 6.7. As the force is applied, the swinging pin 35 begins to move along the swinging pin movement locus 42, and a force is applied to the swinging pin 35 to encourage it to move away from the fixed bin 39. A force is applied from the pin 35 to the bifurcated portion 2 in a direction that promotes rotation, and the shift lever 1 can be reliably pushed into the rotation end 6.7 with a small operating force.

[Effects of the Invention] When performing a gear change operation, this invention provides a tendency to rotate the shift lever from the neutral position toward one of the rotational ends, and the spring promotes this tendency. The shift lever can be reliably pushed to the end of rotation by force, the transmission gear will not become partially engaged and break off, and even if the transmission is repeatedly operated over long distances, it will not become fatigued and the drive will be smooth. The rod will not lack strength.

[Brief explanation of the drawing]

1 to 4 show a first embodiment of the present invention, in which FIG. 1 is a sectional view taken along line II in FIG. 2, FIG. 2 is an overall perspective view, and FIG. 3 is a main part. FIG. 4 is a perspective view of another example of the notch plate, FIGS. 5 and 6 show a second embodiment of the invention, and FIG. 5 is a side view of the main parts. 6th
The figure is a perspective view of the whole, FIG. 7 is a perspective view of a leaf spring and a set screw, FIGS. 8 to 10 show a third embodiment of the present invention, and FIG. 8 is a side view of main parts. , FIG. 9 is an overall perspective view, FIG. 10 is a perspective view of main parts, and FIGS. 11 to 13 show a fourth embodiment of the present invention.
The figure is a perspective view of the whole, Figure 12 is a perspective view of main parts, and Figure 1 is a perspective view of the main parts.
FIG. 3 is an explanatory diagram of the operation. 1...Shift lever 2...Fork part, 3...Pin 4
...Rolling frame, 5...Rotation center 6.7.
... Rotating end, 8... Neutral position, 9... Rolling center, 1o... Ball socket, 11... Notch plate, 12... Set screw, ] 3... Compression coil spring,
14... Ball, 15... Cap nut, 16... Ball movement trajectory, 17... Point, 18... Flat section, 19.20... Concave portion, 21... Leaf spring, 22 ...
Set screw, 23...lower end surface, 24...convex portion, 25.
26... Concavity, 27... Lower end surface movement locus, 28...
・Receiver is groove, 29... Spring holder 30... Set screw, 31... Leaf spring, 32... Convex part, 33... Pad, 34... Lower end surface, 35... Rocker Bent end on moving bottle side,
36... Groove, 37... Clip spring, 38... Swinging bin side bent end, 39... Fixed bin, 4
0... Groove, 41... Fixed bottle side bent end, 42...
Swinging bottle movement trajectory, g...distance, 6g...distance difference.

Claims (1)

[Claims] It is pivoted so as to be able to rotate between one rotation end and the other rotation end, and the transmission gear is engaged with the two rotation ends, and is set at the center between the two rotation ends. a shift lever that disengages the transmission gear at a neutral position, and when the shift lever is given a tendency to rotate from the neutral position toward any rotation end;
A shift lever mechanism comprising a spring means for applying a rotational force to the shift lever in a direction that promotes the rotational tendency.