JPH0477176B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to an improvement of a shift device in a vehicle power transmission system.

[Prior Art] A shift device for shifting gears, etc. in a vehicle's power transmission system has a vertical shaft directly connected to a shift lever that swings two-dimensionally in the X-axis direction and the Y-axis direction, the so-called horizontal axis direction. The oscillating displacement between the shaft and the vertical axis changes the speed of the transmission gear, etc.

For positioning to distinguish each of these rocking movements, there is a method that uses a positioning device consisting of a check ball mechanism protruding from near the center of swing of the vertical shaft below the shift lever, and a position plate combined with this mechanism. .

In this case, the position plate has an H-shaped groove that is guided by pressing a check ball into contact with the plate surface, and enlarged recesses for positioning are provided at various locations in the groove as so-called click stop points. ing.

[Problems to be Solved by the Invention] Due to the structure described above, in order to perform accurate positioning with this position plate, the check ball mechanism, groove arrangement, groove width, etc. must be enlarged to a certain extent. This naturally requires a large space for the position plate device, which poses a difficulty in arranging the shift device.

This is because if the position plate, check ball mechanism, etc. are too small, each member lacks rigidity, reducing positioning accuracy and causing many troubles such as breakdowns. Wear and rattling in other parts easily affect positioning accuracy. In addition, it is necessary to increase the size because it is difficult to ensure machining accuracy such as groove arrangement.

[Purpose of the Invention] This invention was devised by focusing on the above-mentioned problems, and has a simple configuration that allows positioning operations to be performed reliably and accurately, and also allows the positioning member to be made sturdy without taking up much space. The purpose of the present invention is to provide a shift device that can increase the

[Structure of the Invention] In order to achieve the above object, the present invention includes a vertical shaft connected to the lower part of the shift lever, and a first rocking movement centering on the middle part of the vertical shaft, and a shift operation mechanism that performs a shift operation by performing a second swing in a direction orthogonal to the first swing with the first swing as a rotation center;
2. A shift device characterized in that it is provided with a guide member having positioning means for holding and positioning the lower end portion by contacting the lower end member of the vertical shaft during each swinging motion. be.

[Operation of the Invention] The shift device of the present invention has different centers of rotation for the first and second rocking movements in the shift operation mechanism, that is, for each of the vertical and horizontal rocking movements.
Highly accurate movement with little play or rattling is achieved, and since the guide member of the vertical shaft during rocking is narrow and elongated, it increases rigidity and improves guide accuracy without requiring much space. can be improved. As a result, a shift device that is small in size and capable of accurate shifting operations can be obtained.

[Example] Hereinafter, one example of the shift device of the present invention will be described as a first example.
This will be explained with reference to FIGS. 4 to 4.

A shift device 1 for shifting a transmission gear (not shown) of a vehicle is provided on a floor surface to the side of a driver's seat (not shown).

This shift device 1 has a vertical shaft 5 connected and extended below a shift lever 3, and a rectangular cylinder body 7 near the center of the vertical shaft 5 divides the vertical shaft 5 into upper and lower parts. has been done.

Inside the rectangular cylinder 7, a horizontal shaft 9 facing in the vehicle width direction is disposed to pass through the vertical shaft 5 at a substantially right angle, and is pivotally supported on the rectangular cylinder 7 by a pin 11.

Both ends of the horizontal shaft 9 extend through the left and right side walls of the bracket 13 of the shift device 1 fixed to the vehicle floor, and are supported by the side walls of the bracket 13 so as to be rotatable and slidable. .

Furthermore, several annular grooves 17 are cut into the outer periphery of one end 15 of the horizontal shaft 9, and a check ball mechanism 19 with a spring that engages with these annular grooves 17 is attached to the side wall of the bracket 13. These components constitute a lateral positioning device 21 for positioning the axial movement of the lateral shaft 9.

A vertical shaft 5 extending below the rectangular cylinder 7
A check ball 23 with a spring is also attached to the lower end of the holder. When the shift lever 3 is operated, the vertical shaft 5 undergoes a first oscillation about the middle part of the vertical shaft 5, that is, a oscillation along the vehicle traveling direction about the horizontal shaft 9, a so-called longitudinal oscillation. do.

At this time, the check ball 23 at the lower end of the vertical shaft 5 is abutted and guided by the arcuate groove 25, and is held in position only on the circular arc when the vertical shaft 5 swings vertically on the vertical plane. Ru.

Further, enlarged recesses 27a, b, and c for positioning are provided at the center and both ends of this arcuate groove 25 as positioning means.

Now, the lower end of the vertical shaft 5 is the center of rotation,
A second rocking motion in a direction perpendicular to the first rocking motion, that is, a horizontal rocking motion perpendicular to the vertical rocking motion can be performed.

A guide member 29 in which such an arcuate groove 25 with an enlarged recess 27 is carved is mounted below the case 13. The shift lever 3, the vertical shaft 5, each cylinder 7, the horizontal shaft 9, and the pivot pin 11
etc. constitute the shift operation mechanism.

The shift device of the present invention includes the shift operation mechanism and the guide member as described above, so that the first vertical swing and the second horizontal swing can be made by operating the shift lever 3. The center is different.
That is, the first rocking movement is centered on the horizontal shaft 9, and the second rocking movement is centered on the lower end of the vertical shaft 5. Each rocking motion is converted into a movement of the horizontal shaft 9, with the first rocking motion becoming a rotational displacement of the horizontal shaft 9, and the second rocking motion becoming an axial displacement of the horizontal shaft 9.

During this period, play, rattling, etc. occur at the pivot point of the pin 11 of the horizontal shaft 9, the side wall penetration of the case 13, and the guide member 29 via the check ball 23 at the lower end of the vertical shaft 5.
This is the contact portion with the groove 25.

However, since the relative momentum at each location is extremely small, wear and deformation are extremely rare.

Therefore, as long as you are careful when assembling, play and wobbling can be almost ignored. In this way, the first and second rocking motions of the shift lever 3 are divided into very clear displacement motions and positioned, and the gear shift drive mechanism (not shown) can be operated accurately.

Furthermore, since the guide member 29 that positions the vertical shaft 5 during the first swing and holds the position of the lower end is an elongated arc-shaped member having only one arc-shaped groove 25, For the purpose of high precision positioning, the groove 25 including the enlarged recess 27 and the surrounding members are increased in width, thickness, etc. to make them sturdy, and even if the number of composites is increased, there is almost no need to expand the installation space.

[Effects of the Invention] As is clear from the above description, according to the shift device of the present invention, by providing a mechanism and members with a simple structure, the rocking operation including positioning of the shift operation can be ensured and highly accurate. On the other hand, the guide member used for positioning and maintaining the position of the member can also be increased in rigidity without requiring a large installation space.

[Brief explanation of the drawing]

1 to 4 show a shift device according to an embodiment of the present invention, in which FIG. 1 is a partially cutaway explanatory front view, FIG. 2 is a partially cutaway side view,
FIG. 3 is an explanatory plan view showing the guide portion, and FIG. 4 is a front view of the same. 1...Shift device, 3...Shift lever (shift operation mechanism), 5...Vertical shaft (shift operation mechanism), 7...Square cylinder (shift operation mechanism), 9...Horizontal shaft (shift operation mechanism) , 11... Pin (shift operation mechanism), 23... Check ball (positioning means), 25... Arc-shaped groove (positioning means), 2
7a, b, c... Enlarged recess (positioning means), 2
9... Guide member.

Claims (1)

[Claims] 1. A vertical shaft connected to the lower part of the shift lever is provided, and a first swinging movement is made with the middle part of the vertical shaft as the center of rotation, and a swinging movement is perpendicular to the first swinging part with the bottom end of the vertical shaft being the turning center. a shift operation mechanism that performs a shift operation by performing a second swing in the direction;
A shift device comprising: a guide member having positioning means for holding and positioning the lower end portions by contacting the lower end members of the first and second vertical shafts during rocking.