JPS6228818A - Shifting device - Google Patents

Abstract

PURPOSE:To guide the motion of shifting operation due to the oscillation of a shift lever with a small guide plate by forming a guide mechanism consisting of a pin and a grooved plate. CONSTITUTION:The point 29 of a pin 11 supporting a horizontal shaft 9 pipotally is extended up to a position close to the front wall surface of a blacket 13. On the other hand, the grooved plate 33 is fitted to the inside of the inwall of a blacket 13. The vertical and horizontal oscillations of the shift lever 3 are divided/converted into displacement in the circumferential direction of the horizontal shaft 9 and that in the axial direction. Consequently, the movement of the horizontal shaft 9 is expanded and transmitted to the point 29 of the pin 11 and the pin point 29 is moved precisely correspondingly to the motion of the horizontal shaft 9. Since the pin point 29 is moved while being guided by the groove of the grooved plate 33, excess movement, movement causing malfunction, etc. can be precisely regulated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to improvements in shift devices in vehicle power transmission systems.

[Prior Art] A shift device for shifting a transmission gear, etc. in a vehicle's power transmission system has two types of swings: a shift lever that moves along the direction of vehicle travel, a so-called longitudinal swing, and a swing in a direction perpendicular to this. , so-called lateral rocking is transmitted to the vertical shaft directly connected to the shift lever.

Then, the rocking motion transmitted to the vertical shaft is regulated by the groove of the guide plate, which is fitted into the vertical shaft almost perpendicularly and is attached to the stationary side member, so that the transmission gear etc. below the shift can be arbitrarily selected. It is designed to perform switching.

In this case, in addition to the guide plate, on the vertical shaft itself,
Alternatively, another member connected below is usually provided with a positioning mechanism that combines a check ball and an engagement groove, and this positioning ensures that shifting to each gear is performed reliably. There is.

However, although this positioning mechanism has a positioning function, it does not restrict the gear shifting procedure.

For example, if the operation of switching to meshing with the adjacent 4th gear while remaining in mesh with the 2nd gear is performed without restriction, a failure will occur immediately.

Therefore, in order to prevent the above-mentioned troubles, a guide plate in which grooves are carved in an H-shape or in the shape of opposed comb teeth is required. Due to the presence of the guide plate having such a groove, a shift operation to engage other gears cannot be performed unless the state in which the gear is engaged with the second speed gear is returned to the -H neutral state.

In other words, since the vertical shaft is restricted by the groove, it is impossible to jump from one groove to another.

[Problems to be Solved by the Invention] The conventional shift device described above has a simple structure and is less likely to malfunction.

However, the vertical shaft itself cannot be made very thin in order to maintain strength and rigidity, and therefore the groove width of the guide plate has the same size, and the swing stroke of the shift 1 lever also becomes considerably large.

Also, in the case of a multi-stage transmission with 6 to 7 stages, such as a large truck, what is the groove shape of the guide plate? IIi+%
,Become. For these reasons, if the guide plate is made smaller, the grooves may come too close to each other or overlap, making it impossible to carve the grooves, so the guide plate must be made larger to some extent.

Therefore, the lower part of the shift lever is largely blocked, resulting in an inconvenient problem.

[Objective of the Invention 1] The present invention was devised in view of the above-mentioned problems, and an object of the present invention is to provide a compact shift device in which the movement of the shift operation caused by the swinging of the shift lever can be guided by an extremely small guide plate.

[Structure of the Invention] In order to achieve the above object, the present invention provides a shift lever.
A vertical shaft connected to the bottom of the shirt, a horizontal shaft mounted orthogonally to the shirt 1-, and a swinging displacement operation of the vertical shaft in the vertical and horizontal directions by the shift lever is performed in the circumferential direction of the horizontal shaft. a divided positioning means that performs positioning by dividing and converting displacement and axial displacement; a pin protruding from the vicinity of a horizontal shaft locking portion for the vertical shaft;
The gist of the shift device is characterized in that it is constituted by a guide mechanism that is provided in combination with a grooved plate that the pin engages with and that supplements and guides the operation of the shift lever.

[Operation of the Invention] The shift device of the present invention is constructed as described above, and each swinging motion of the shift lever in the vertical direction and the horizontal direction is performed at different swinging centers in the horizontal direction near the swinging center. Divided conversion into rotational displacement and axial displacement of the shaft results in compact and reliable operation.

The movement of the pin protruding from the horizontal shaft locking portion near the pivot center is similarly compact and reliable.

Further, since this pin projects from the locking portion of the horizontal shaft which is not directly involved in the shift operation, its diameter can be made very small.

Therefore, the guide mechanism combined with the grooved plate for regulating the movement of the pin can be significantly downsized, and the entire shift device can also be made compact.

[Embodiment] An embodiment of the shift device of the present invention will be described below with reference to the drawings of FIGS. 1 to 3.

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

The shift device 1 has an extended vertical shaft 5 connected to the lower part of the shift lever 3.
A short rectangular cylinder 7 is attached near the center of the vertical shaft 5 in the form of dividing it into upper and lower parts.

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

Both ends of the horizontal shaft 1-9 extend through the left and right side walls of the bracket 13 of the shift device a1 fixed to the floor of the vehicle, and are rotatable and slidable on both sides of the bracket 1-13. Supported.

Further, one end 15 of the horizontal shaft 9 has four annular grooves 17 carved close to each other on its outer periphery, and these annular grooves 1
A spring-loaded check ball mechanism 19 that engages 7 is mounted on the side wall of the bracket 13 and together constitutes a lateral positioning device 21 for axial movement of the transverse shaft 9.

A check ball 23 with a spring is also attached to the lower end of the vertical shaft 5 extending below the rectangular cylinder 7. In addition, the vertical shaft 5 swings along the vehicle traveling direction about the horizontal shaft 9 by operating the shift lever 3.
In other words, it swings vertically.

At that time, the check ball 23 at the lower end of the vertical shaft 5 is
It 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 a vertical plane.

Therefore, when the shift lever 3 is swung in the lateral direction, the check ball 23 is swung around the center of rotation.

Further, enlarged recesses are provided at the center and both ends of this arcuate groove 25 for each positioning purpose. is installed on.

Furthermore, a pin 1 that pivotally supports the horizontal shaft 9 in the rectangular cylinder body 7
The tip 29 of the bracket 1 extends to the vicinity of the front wall surface of the bracket 13, as shown in FIG.

Then, with the pin tip 29 engaged in response to the circumferential and axial displacements of the horizontal shaft 9, the comb teeth face each other from above and below, with a groove width approximately equal to the diameter of the pin tip 29, as shown in the figure. A grooved plate 33 having a groove 31 carved therein is attached to the inner surface of the front wall of the bracket 13.

In the shift device 1 configured as described above, the movement when the shift lever 3 is operated will be described.

First, move the shift lever 3 vertically (horizontal direction shown in Figure 2).
When it is swung, it oscillates around the horizontal shaft 9. The check ball 23 at the lower end of the vertical shaft 5 moves while being guided by the arcuate groove 25 of the longitudinal positioning plate 27, and is positioned in the enlarged recess in the arcuate groove 25.

Next, when the shift lever 3 is swung in the lateral direction (left-right direction in FIG. 1), the center of rotation at this time is the check ball 23 at the lower end of the vertical shaft 5. The horizontal shaft 9 in the middle of the vertical shaft 5 moves in the axial direction by a stroke that is a fraction of the amount of rocking of the shift lever 3, and the horizontal positioning device 21 controls the axial movement to 4 times during the axial movement stroke.
Positioned at a point.

In other words, each swinging operation in the vertical and horizontal directions by the shift lever 3 is divided into a circumferential displacement that involves three-point positioning of the horizontal shaft 9, and an axial displacement that involves four-point positioning. converted.

This divided positioning means is composed of the horizontal shaft 9, the horizontal positioning device 21, the vertical positioning plate 27, the check ball 23, and the like.

The movement of the horizontal shaft 9 that is divided and positioned in this way is as follows:
The signal is magnified and transmitted to the tip 29 of the pin 11, and the pin tip 29 moves in exact response to the movement of the horizontal shaft 9. Since the two tips of the pin move while being guided by the grooves of the grooved plate 33, excess movement, movement that could lead to malfunction, etc. can be reliably regulated.

That is, the pin 11 and the grooved plate 33 constitute a guide mechanism that compensates and guides the movement of the shift lever 3.

[Effects of the Invention] As is clear from the above description, according to the shift device configured according to the present invention, the movement of the shift operation due to the swinging of the shift lever can be accurately guided by an extremely small guide plate. The entire system can be made very compact, making it convenient for placement near the narrow area to the side of the driver's seat.

Furthermore, since the number of component parts of the shift device does not increase, there is no adverse effect on parts management, assembly man-hours, etc.

[Brief explanation of drawings]

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, and FIG. The figure is a plan view showing the guide plate, and FIG. 4 is a side view of the same. Explanation of main drawing symbols 1... Shift device, 3... Shift lever 15...
・Vertical shaft, 9...Horizontal shaft, (divided positioning means)
21... Lateral positioning device, (same as above) 27.
...Vertical positioning plate, (same as above) 23...
Check ball, (same as above) 11...pin,
(Guide mechanism) 33...Grooved tab 1 notebook, (same as above) Patent applicant Fuji Kiko Co., Ltd. Figure 1 Figure 2 Figure 3 Construction figure 4

Claims (1)

[Claims] A vertical shaft connected below the shift lever, a horizontal shaft installed orthogonally to the vertical shaft, and a circumference of the horizontal shaft that allows the shift lever to swing and displace the vertical shaft in the vertical and horizontal directions. A divided positioning means that performs positioning by dividing and converting directional displacement and axial displacement, a pin protruding from the vicinity of the horizontal shaft device with respect to the vertical shaft, and a grooved plate that is engaged with the pin are provided in combination. A shift device comprising a guide mechanism that supplements and guides the operation of the shift lever.