JPH0249936B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a column shift device for an automatic transmission provided in an automobile.

(Prior Art) As a conventional column shift device for an automatic transmission, the one described in, for example, Japanese Unexamined Patent Publication No. 141931/1983 is known.

In this conventional device, a control shaft is rotatably attached in parallel to one side of a jacket tube, a shift lever and an operating lever are attached to this control shaft, and a bell crank is attached to the same jacket as the control shaft. It is located on one side of the tube and is pivotally connected to the jacket tube, and one end of the bell crank and the swinging end of the operating lever are connected via a connecting rod, and the other end of the bell crank and the transmission are connected. The range lever was connected via a control cable.

In this structure, the bell crank is not attached to the vehicle body, but is pivoted to the jacket tube, so it is possible to increase the assembly accuracy when connecting the operating lever and the bell crank, and the bell crank is not attached to the vehicle body. It is possible to obtain the effect that the crank is not covered with muddy water and the operability is not deteriorated.

(Problems to be Solved by the Invention) However, in the above-mentioned conventional device, the control shaft with the actuating lever and the bell crank are attached to the same side of the jacket tube, and therefore the entire mechanism is connected to the jacket tube. It tended to lean toward one side of the tube.

Therefore, the shell cover that covers the shift device swells significantly on one side, resulting in an aesthetic problem in that it spoils the appearance.

In addition, since each component must be concentrated on one side, each component has its mounting position, shape,
This results in mutual constraints due to size, etc. For this reason, it is necessary to shorten the lengths of each component, especially the operating lever and the bell crank, which are subject to rotational movement, and also shorten the connecting rod that connects the operating lever and the bell crank. This results in a problem in that the degree of freedom in design is reduced, the degree of freedom in determining the lever ratio is greatly restricted, and the actual lever ratio changes greatly depending on the position, resulting in poor operating feel of the shift lever.

(Means for Solving the Problems) The present invention has been made to solve the above-mentioned conventional problems, and for this purpose, the column shift device of the present invention has a A control shaft is rotatably provided in parallel with the jacket tube, a shift lever and an operating lever are attached to the control shaft, a bell crank is located on the other side of the jacket tube and is pivotally connected to the jacket tube, One end of the bell crank and the swinging end of the operating lever are connected via a connecting rod provided across the jacket tube, and the other end of the bell crank is connected to a range lever of the transmission. The configuration is as follows.

(Function) In the column shift device of the present invention, a controller shaft having a shift lever and an operating lever and a bell crank are mounted on opposite sides with a jacket tube in between. Along with this, a connecting rod connecting the swinging end of the operating lever and the direction changing lever is installed across the jacket tube.

Therefore, since the entire mechanism is distributed on both sides of the jacket tube, the mechanism will not be biased to one side of the jacket tube, and each component, especially the actuating lever and bell crank that involve rotational movement, can be mounted at different locations. There is no need to limit each other in terms of shape, size (length), etc., and the degree of freedom in design increases.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.
As shown in FIGS. 1 and 2, the column shift device A of this embodiment is assembled to a steering column 1 of an automobile, and includes a control shaft 2, a shift lever 3, an operating lever 4, a bell crank 5, and a coupling. The main components include a rod 6 and a control cable 7.

The steering column 1 is a steering shaft 1 having a steering wheel 111 at its upper end.
1, and a jacket tube 12 for holding the steering shaft 11 inside, and a column bracket 12 provided on the jacket tube 12.
1, it is fixed to the vehicle body in an inclined state.

The control shaft 2 is located on the left side of the jacket tube 12 when viewed from the driver's seat, and is provided in parallel with the jacket tube 12.
In this case, the control shaft 2 is rotatably and axially slidably fitted at both ends to a guide rod 21 attached to the jacket tube 12 via brackets 211, 211.

Further, a shift lever 3, which is a gear shift operation lever for a transmission (not shown), is attached to the upper end of the control shaft 2 so as to extend to the left, and an operating lever 4 is attached to the lower end, which is a gear shift lever for a transmission (not shown). It is attached so as to extend upward from the upper end surface of the butt tube 12.

The bell crank 5 serves as a direction changing lever for changing the direction in which the operation of the operating lever 4 is easily transmitted to the transmission, and is formed in a substantially dogleg shape, with the jacket tube 12 in between. It is located on the opposite side (right side) of the control shaft 2 and is pivotally connected to the jacket tube 12 via a bracket 51 by a pin 52.

Further, the bell crank 5 and the operating lever 4 are connected via a connecting rod 6, and in this case,
A connecting rod 6 is passed between the swinging end 41 of the operating lever 4 and one end 53 of the bell crank 5 while straddling the upper part of the jacket tube 12.

The other end 54 of the bell crank 5 is connected to the base end of a control cable 7 made of a pet pull wire, and the tip of the control cable 7 is connected to a range lever (not shown) of the transmission. Note that 71 is a cable mount bracket.

Next, the operation of this embodiment will be explained.

When changing gears using the shift lever 3, the movement of the shift lever 3 is transmitted to the operating lever 4 by the control shaft 2 provided on the left side of the jacket tube 12, and from this operating lever 4 to the jacket via the connecting rod 6. tube 12
The signal is transmitted to the bell crank 5 provided on the right side of the transmission, and after being changed in direction by the bell crank 5, the signal is transmitted to the range lever of the transmission via the control cable 7, and the transmission operates the gear shift operation. will be done.

In this case, among the components of the column shift device A, the shift lever 3 and the control shaft 2
and the operating lever 4 are located on the left side of the jacket tube 12, and the bell crank 5 is located on the right side of the jacket tube 12,
A connecting rod 6 is disposed across the jacket tube 12.

Therefore, in the column shift device A, the entire mechanism is not biased to one side of the jacket tube 12, and each component, especially the actuating lever 4 and the bell crank 5, which rotate, Because they are located on opposite sides of the wall, there has never been a case where they restrict each other's mounting position, shape, size (length), etc.

Next, a second embodiment of the present invention will be described with reference to FIG.

This second embodiment is characterized in that a bell crank 50 serving as a direction changing lever is formed into a straight rod and is attached parallel to the jacket tube 12.

Therefore, the amount of overhang of the bell crank 50 from the jacket tube 12 is reduced, and the assembly can be made more compact.

In this second embodiment, the same components as in the first embodiment are denoted by the same reference numerals in the drawings, and the explanation thereof will be omitted, and since the operation is also the same as in the first embodiment, the explanation will be omitted.

Although the embodiments of the present invention have been described above with reference to the drawings, the specific configuration of the present invention is not limited to the above-described embodiments, and the present invention may be modified even if there is a design change within a range that does not depart from the gist of the invention. included.

For example, in the embodiment, the control shaft may be provided on the left side of the jacket tube, and the bell crank may be provided on the right side of the jacket tube.

Alternatively, the connecting rod may be provided so as to pass under the jacket tube.

(Effects of the Invention) As explained above, in the column shift device of the present invention, the component parts are distributed to the left and right sides of the jacket tube and are not biased to one side of the jacket tube, so that the shell cover covering the component parts is not biased toward one side of the jacket tube. It doesn't look as bad as it did when it expanded greatly on only one side.

In addition, since the operating lever and the bell crank are located on opposite sides with the jacket tube in between, and the connecting rod is installed across the jacket tube, the mounting position, shape, size ( Length), etc. are not mutually constrained, and a degree of freedom in design is obtained, which increases the degree of freedom in determining lever ratios. Since it is possible to form the shift lever for a long time, the change in the actual lever ratio at each position is reduced, and the effect of improving the operating feeling of the shift lever can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a column shift device according to a first embodiment of the present invention, FIG. 2 is a side view of the device according to the first embodiment, and FIG. 3 is a plan view showing a column shift device according to a second embodiment of the present invention. It is. A: Column shift device, 2: Control shaft, 3: Shift lever, 4: Operating lever, 5:
Bell crank, 6: Connection rod, 7: Control cable, 12: Jacket tube.

Claims (1)

[Claims] 1. A control shaft is rotatably provided on one side of the jacket tube in parallel with the jacket tube, a shift lever and an operating lever are attached to the control shaft, and the other side of the jacket tube is provided with a control shaft rotatably provided in parallel with the jacket tube. A bell crank is pivotally connected to the jacket tube, and one end of the bell crank and the swinging end of the operating lever are connected via a connecting rod provided across the jacket tube. A column shift device for an automatic transmission, characterized in that the other end of the crank is connected to a range lever of a transmission.