JPH08159256A - Automatic transmission operating device for vehicle - Google Patents

Abstract

PURPOSE: To simplify structure, reduce a cost, and to improve operability by a method wherein the central line of an activating lever and the axis in an operation direction of a push cable cross each other approximately at right angles in the vicinity of the rotation angle position of a detent plate coupled operably to a shift valve. CONSTITUTION: An actuating lever 16 is mounted on one end of the support shaft 18, on which a detent plate 24 is mounted, of an automatic transmission 14, and an angle θ of the central line O-O of the lever 16 with the axis in an actuating direction of a push cable 20 coupled to the free end part of the actuating lever 16 is specified. Namely, at the angle θ, a positioning member 32 to specify the shift position of the detent plate 24 is engaged with a recessed part 26p in a shift position P and setting is effected so that an angle is adjusted approximately to right angles in the vicinity of the rotation angle of the detent plate moving over an adjoining protrusion 28. This constitution converts a shift operation force, transmitted to the actuating lever 16 through the cable 20, to the rotation angle of the detent plate 24 with high efficiency, and improves shift operability.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic transmission operating device for vehicles such as automobiles.

[0002]

2. Description of the Related Art As an example of the configuration of a conventional automatic transmission operating device for a vehicle, for convenience sake, the schematic side view of FIG. 1 showing an embodiment of the present invention is used, and a side view of essential parts of FIG. This will be described with reference to the perspective view of the main part of FIG. First, in FIG. 1, reference numeral 10 is a shift lever for automatic transmission control, which is arranged at a proper position in a vehicle compartment, usually on a side of a driver's seat and pivotally supported by a pivot 12 for weekly movement, and 14 is a floor of a vehicle compartment. The automatic transmission 16 arranged on the lower side is arranged at an appropriate position of the automatic transmission 14,
For details, an operating lever fixed to one end of a support shaft 18 to which a detent plate in an automatic transmission, which will be described later, is fixed, and one end of which is pivotally attached to the shift lever 10 and the other end is the operating lever 16 Inner cable 20a pivotally attached to the free end of the
It is a push-pull cable including an outer cable 20b slidably accommodating a.

A second detent plate 22 is disposed adjacent to the shift lever 10 on the passenger compartment side. The shift lever 10 includes a detent pin (not shown) and the second detent plate 22 in cooperation. By the operation, one of the shift positions P, R, N, D, 2 and L is selectively selected. The rotation of the shift lever 10 is performed by the automatic transmission 14 via the push-pull cable 20.
Is transmitted to the actuating lever 16 and the supporting shaft 18 is rotated. As best shown in FIGS. 4 and 5, a detent plate 24 in a substantially fan-shaped automatic transmission is fixedly mounted on a support shaft 18 having an actuating lever 16 fixed to one end thereof. On the outer peripheral surface of 24, a plurality of recesses 26 _P , 26 _R, ... 26 _L for limiting the rotational angle positions of the detent plate corresponding to the shift positions P, R, ... L of the shift lever 10, respectively, adjacent recesses ₂₆ P _~2
6 _L is provided with a plurality of protrusions 26, and among these protrusions 28, the recess 26 _{P at the} P shift position is provided.
The projection 28 between the _R and the recess 26 _R at the R shift position is the largest projection, and is generally formed so that the height of the projection 28 decreases from the P shift position to the L shift position.

The recesses 26 _{P of the} detent plate 24
Positioning members such as balls 32 or equivalent pins or rollers that are constantly urged toward the outer peripheral surface of the detent plate 24 by a spring 30 are disposed on the outer side of 26 _{L in} the radial direction. As described above, since the protrusion 28 adjacent to the recess 26 _P that defines the P shift position has the highest height, the detent plate 24 moves from the N shift position to the P shift position and vice versa. The resistance when moving to the shift position, that is, the required operating force of the push-pull cable 20, in other words, the required operating force of the shift lever 10, is the largest. As shown in FIG. 5, when the detent plate 24 is in the P shift position, a parking pole (not shown) is engaged with the parking cam via the parking assist lever 34 and the parking rod. However, since these are not directly related to the present invention, detailed description will be omitted. Further, as is well known in the art, a pin member protruding downward from the detent plate 24 operates a shift valve (not shown) of the automatic transmission 14 to switch the hydraulic circuit and switch the shift speed. It has become.

In the conventional automatic transmission operating device, as shown in FIG. 4, when the detent plate 24 is in the P shift position, the same operation as the center line of the operating lever 16, that is, the inner cable 20a is performed. With respect to the line OO connecting the center of the pivot point with the lever 16 and the center of the support shaft 18,
Since the angle θ with the axis of the inner cable 20a is an acute angle, the driving force of the detent plate 24 based on the acting force of the inner cable 20a becomes small. on the other hand,
In a normal vehicle layout, push-pull cable 20
However, as shown in FIG. 1, the inner cable 20a must be arranged so as to extend toward the rear, then bend with a relatively small radius of curvature, and extend toward the front of the vehicle. The sliding resistance between the outer cable 20b and the outer cable 20b is fairly large, and due to the vehicle layout, the shift lever 10
If the length cannot be set sufficiently large,
Operating force diagram (the vertical axis shows the required operating force S of the shift lever 10 required to get over the adjacent protrusion 28 at each shift position of the detent plate 24, and the horizontal axis shows each shift position P to L. As shown by the dotted line in (shown), particularly when operating from the P shift position to the N position,
There is a problem that the practical limit operating force S _O is exceeded and the operability is significantly deteriorated.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances and provides a basic vehicle layout such as the length of the shift lever, the arrangement of the push-pull cable, and the structure and arrangement of the automatic transmission. There is no need to make any changes, effectively reducing the required operating force of the shift lever,
An object of the present invention is to provide an automatic transmission operating device for a vehicle, which has a simple structure and can improve operability and is inexpensive.

[0007]

In order to achieve the above object, the present invention provides a shift lever disposed near a driver's seat in a vehicle compartment and an operation gear shift valve provided in an automatic transmission. Between the detent plate connected to the detent plate, the actuating lever that is mounted on the support shaft of the detent plate and determines the shift position of the detent plate by its movement, and the plurality of protrusions that are formed on the outer peripheral portion of the detent plate and that limit the shift position. A positioning member such as a ball or a pin that selectively engages with the recess of the above, and a push-pull cable that operatively connects the shift lever and the operating lever. In the vicinity of the driving angle position of the same detent plate that exceeds the maximum protrusion adjacent to the recess that limits the P shift position, Serial and axial actuating direction of the push-pull cable, is to propose an automatic transmission operating apparatus for a vehicle, characterized in that it is configured substantially orthogonal.

[0008]

According to the present invention, when the detent plate of the automatic transmission exceeds the maximum projection adjacent to the recess defining the P shift position, the detent plate is located near the driving angle position of the detent plate and the center line of the operating lever. Since the axis of the push-pull cable in the operating direction is configured to be substantially orthogonal to each other, the action force of the push-pull cable provides the maximum detent plate driving force, and the operability of the shift lever is effective. To be improved.

[0009]

Embodiments of the present invention will be specifically described below with reference to FIGS. (Note that repetitive description is omitted for the matters already described in relation to the conventional automatic transmission operating device, and substantially the same or corresponding members and portions are denoted by the same reference numerals.) According to the present invention In particular, as well shown in the front view of the essential part of FIG. 2, the operating lever 16 fixed to one end of the support shaft 18 on which the detent plate 24 of the automatic transmission 14 is mounted.
The angle θ formed by the center line O-O and the axis of the push-pull cable 20 connected to the free end of the operating lever 16 in the operating direction defines the shift position of the detent plate 24, such as a ball. 32 engages with the recess 26 _P at the P shift position, and becomes approximately a right angle in the vicinity of the detent plate drive angle overcoming the largest adjacent protrusion 28.
The relative angular phase of the operating lever 16 and the detent plate 24 is determined, and the relative arrangement of the push-pull cable 20 is set.

According to the above construction, the operating force S applied to the shift lever 10 is transmitted to the operating lever 16 via the push-pull cable 20, and is converted into the driving force of the detent plate 24 with substantially the highest efficiency. Therefore, as indicated by the solid curve in the operation force diagram of FIG. 3, the required operation force at all shift positions P to L is changed to the limit operation force S.
It can be made _O or less, and the operability of the shift lever 10 can be effectively improved. Further, the above effect or advantage is an increase in the length of the shift lever 10 which may cause interference with other lever devices in the vicinity and other components in the vehicle interior.
Increasing the length of the operating lever 16 which requires a structural change of the automatic transmission 14, and the push-pull cable 2 which is extremely difficult in practice
The detent plate 24 and the actuating lever 16 do not require any change in the basic vehicle layout such as the change of the arrangement of 0.
Can be easily obtained only by the relative disposition of the push lever cable 20 and the disposition of the connecting end of the push-pull cable 20 with respect to the actuating lever 16. Therefore, the structure is complicated and the number of parts is increased. It can be implemented easily and easily without any problems such as increase.

[0011]

As described above, the automatic transmission operating device for a vehicle according to the present invention is provided with a shift lever disposed near a driver's seat in a vehicle compartment and a shift of the transmission provided in the automatic transmission. A detent plate operatively connected to the valve, an operating lever mounted on a support shaft of the detent plate to determine a shift position of the detent plate by its movement, and a shift position formed on an outer peripheral portion of the detent plate to limit the shift position. A ball that selectively engages the recess between the plurality of protrusions,
In a device including a positioning member such as a pin and a push-pull cable that operatively connects the shift lever and the actuating lever, the positioning member has a maximum size adjacent to the recess defining the P shift position of the detent plate. In the vicinity of the drive angle position of the detent plate beyond the protrusion, the center line of the operating lever and the axis line in the operating direction of the push-pull cable are configured so as to be substantially orthogonal to each other. There is an advantage that it is possible to provide this kind of operating device which is low in manufacturing cost and excellent in operability.

[Brief description of drawings]

FIG. 1 is a schematic side view showing one embodiment of the present invention.

FIG. 2 is a side view of a main part of a detent plate operating portion of the automatic transmission of FIG.

FIG. 3 is a diagram showing an operating force of a shift lever in FIG.

FIG. 4 is a side view of a main part of a detent plate operating portion of a conventional automatic transmission.

FIG. 5 is a perspective view showing a structure of a peripheral portion of a detent plate in a conventional automatic transmission.

[Explanation of symbols]

10 ... Shift lever, 14 ... Automatic transmission, 16 ... Actuating lever, 18 ... Support shaft, 20 ... Push-pull cable, 2
4 ... detent plate, ₂₆ P ~26 L _... recess, 28 ...
Projection, 30 ... Spring, 32 ... Ball (positioning member).

Claims (1)

[Claims] 1. A shift lever arranged near a driver's seat in a vehicle compartment, a detent plate provided in an automatic transmission and operatively connected to a shift valve of the transmission, and a support shaft of the detent plate. An operating lever that is mounted and determines the shift position of the detent plate by its path, and balls, pins, etc. that selectively engage in the recesses between the plurality of protrusions that are formed on the outer peripheral portion of the detent plate and that limit the shift position. A positioning member and a push-pull cable that operatively connects the shift lever and the actuating lever, wherein the positioning member has a maximum protrusion adjacent to a recess defining the P shift position of the detent plate. In the vicinity of the drive angle position of the same detent plate over which the center line of the operation lever and the axis line of the push-pull cable in the operation direction are substantially straight, An automatic transmission operating device for a vehicle, which is configured to intersect with each other.