JPH023733A - Shift lever device of automatic transmission - Google Patents

Abstract

PURPOSE:To carry out the operation in the two-dimensional direction lightly and securely by forming a main guide groove along the main operation direction of a shift lever and a subguide groove along the suboperation direction which crosses at tight angle with the main operation direction. CONSTITUTION:A main guide groove 40 along the main operation direction of a shift lever which is fitted onto a detent ball and a subguide groove 44H along the suboperation direction which crosses at right angle with the main operation direction at a specific shift position of the main guide groove are installed onto a detent engagement plate 34 installed onto a shift lever 14. Further, a switch lever 48 which is interlocked with the detent engagement plate 34 only at the shift position corresponding to the subguide groove 44H and can be moved in reciprocation in the suboperation direction is installed. Therefore, the operation which obstructs the main operation is prevented by the switch lever 40.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a shift lever device for an automatic transmission.

In particular, the present invention relates to an improvement in a shift lever device having a structure that allows shifting in two-dimensional directions.

[Conventional technology]

A shift lever device in an automatic transmission for an automobile is usually capable of shifting in one direction, and is configured to move intermittently to each shift position using a detent mechanism. In this type of shift lever device, the shift lever is operated in a separate direction from the main operating direction required for gear shifting in order to provide not only gear shifting operations but also accelerator/deceleration functions and additional functions for performing various operations required for the vehicle. A device that allows shifting in orthogonal directions has been proposed (Japanese Patent Publication No. 48-3966).

[Problem to be solved by the invention]

However, in conventional shift lever devices capable of shifting in two-dimensional directions, the shift lever and the auxiliary function operation switch lever are always directly connected, and even when the auxiliary function is not required, the shift lever is operated following the main operation. Therefore, there was a problem that the operability was poor and the operation became so-called heavy.

The present invention focuses on the above-mentioned conventional problems, and provides a shift lever device for an automatic transmission that can be operated in two-dimensional directions, and has a structure that allows operation in either direction easily and reliably. The purpose is to

[Means to solve the problem]

In order to achieve the above object, the shift lever device for an automatic transmission according to the present invention has a main guide groove along the main operation direction of the shift lever that fits the detent ball in a detent locking plate attached to the shift lever, and a main guide groove along the main operating direction of the shift lever that fits the detent ball. A sub-guide groove along a sub-operation direction orthogonal to the main operation direction is provided at a specific shift position of the guide groove to enable two-dimensional shifting of the shift lever.

The present invention also includes a switch lever that is connected to the detent locking plate only at a shift position corresponding to the auxiliary guide groove and is capable of reciprocating in the auxiliary operation direction.

[Effect]

With the above configuration, the switch lever and the detent locking plate are linked only at the position where the sub-operation is possible, so the switch lever does not interfere with the main operation during main operation, making it smooth and light even when ancillary functions are provided. This provides easy operability.

〔Example〕

Embodiments of a shift lever device for an automatic transmission according to the present invention will be described in detail below with reference to the drawings.

1 to 3 are a longitudinal cross-sectional view, a plan view, and a cross-sectional view showing a shift lever device according to an embodiment. As shown in the figure, this shift lever device includes a shift lever 14 in a casing formed by a base plate 1o and a top cover 12.
support 1 through the lower end of the lever 14 to the shift 1.
A bracket 18 erected on the base plate 10 is connected to the base plate 10 via a bracket 6 . The support 16 has two forked parts perpendicular to each other, and one of the forked parts is attached to the bracket 18.
The other two forks are connected to the lower end of the shift lever 14 via a sub-support pin 22. For this reason, both pins 20°22 are arranged orthogonally,
2 so that the shift lever 14 can be selectively swung around each pin 20, 22. In this case, the direction of the swinging force of the shift lever 14 about the main support pin 20 is the main operating direction of the automatic transmission, that is, the reverse direction shown in FIG.
R), neutral (N), drive (D), and hold (HOL D). The direction in which the shift lever 14 swings about the sub-support pin 22 is perpendicular to the main operation direction,
The structure is such that this direction is used as a sub-operation direction to perform ancillary functions, which will be described later.

In order to determine each shift position in the main operation direction, a pair of cam plates 24 are provided upright on the base plate 10 so as to sandwich the shift lever 14.
A cam pin 28 attached to the shift lever 14 is engaged with a cam hole 26 formed in the shift lever 14. Cam pin 28
The shift lever 14 can be engaged with and disengaged from the cam surface by operating a knob 32 provided on a handle 30 of the shift lever 14. In order to move the shift lever 14 intermittently to each shift position, the shift lever 14 is provided with a detent locking plate 34.
A detent guide plate 38 having a detent ball 36 is attached to the cam plate 24 to form a detent mechanism. A detent guide plate 38 is provided on each cam plate 24, and a detent ball 36 is attached to the guide plate 38 so as to be elastically biased against the lower surface of the detent locking plate 34.

These guide plate 38 and ball 36 are attached to fixed positions, but the detent locking plate 34, which moves together with the shift lever 14, has a detent ball 36 at the contact position of the detent ball 36 along the main operation direction. 36 main guide grooves 4o are formed.

That is, as shown in FIGS. 4 to 6, the detent locking plate 34 is a planar rectangular plate having a shift lever mounting hole 42 in the center, and is formed into a side arc with the main support pin 20 at the center. There is. Guide grooves 40 along the main operating direction are formed on both sides of the lower surface, which is an arcuate surface, and these serve as rolling paths for the detent ball 36.

The main guide groove 40 is provided at each shift position (R, N,
D.

Triangular groove 44 (44R144N,
44D, 44H) are formed, and when the ball 36 engages with each triangular groove 44, intermittent operation is obtained.

Here, the triangular groove 44H corresponding to the shift position of the rHoLDJ in the main operation direction is formed wide as shown in FIG. It has a movable structure, and the direction along the top ridgeline of this triangular groove 44H is a sub-guide groove. Therefore, when the detent ball 36 engages with the sub-guide groove (triangular groove) 44H, the shift lever 14 can swing about the sub-support pin 22.

Furthermore, a sub-guide groove 44 in the detent locking plate 34
A sub-operation protrusion 46 is provided at the center of the rear end surface on the side opposite to the H formation side. This protrusion 46 performs an additional function provided in the shift lever device, and the detent ball 3
At the auxiliary operation position, which is the engagement position between 6 and the auxiliary guide groove 44H, it is connected to a switch lever 48 that performs an additional M& function. As shown in FIG. 1 and FIGS. 7 to 9, the switch lever 48 is formed in an L-shape, and its tip is supported by a pin with its lower half along the base plate 10. It can be rotated. The other piece is a switch opening part 50 which is installed perpendicular to the base plate 10, and furthermore, the sub-operation protrusion 46 provided on the detent locking plate 34 can be inserted into the upper surface of this switch opening part 50. A projecting piece 54 having a forked portion 52 is provided. In order to maintain the switch lever 48 in a neutral position at all times, a guide is provided with a figure 7 surface 56 on the inner surface of the switch closing portion 50 and is attached to a guide block 58 that supports the lever 48 with a pin. The ball 60 is pressed into contact with the ball 60. guide ball 60
When the switch lever 48 is in a position away from the neutral position, the interaction between the biasing force and the figure 7 face 56 always generates an acting force that returns the switch lever 48 to the neutral direction, thereby maintaining the neutral position. Therefore, when the shift lever 14 is shifted to the hold position by main operation, the sub-operation protrusion 48 is inserted into the bifurcated portion 52 of the switch lever 48 and becomes connected, and only by sub-operating the shift lever 14 left and right. The switch lever 48 will be swung. A limit switch 62 is provided corresponding to the end of the swing movement of the switch lever 48 to perform, for example, acceleration, deceleration, or other incidental functions, and the switch closing portion 50
The ON-OFF operation of the incidental function can be performed with .

According to the shift lever device for an automatic transmission configured in this way, when the shift lever 14 shifts in the main operation direction and reaches the hold position, the sub-operation becomes possible, and only then does the switch lever perform the sub-operation. 48 and the shift lever 14 are in a linked state. Then, after finishing the sub-operation,
In the normal shift operation direction, the shift lever 14 and the switch lever 48 are not in a locked state, so the shift operation is performed extremely smoothly.

A small window 64 is provided at one corner of the top cover 12 of this shift lever device, and this small window 64 can be opened and closed by a slide cover 66. An inching switch 68 is attached inside the small window 64, and the switch 68 is exposed to the outside by sliding the cover 66. Inching switch 6
8 is connected to the accelerator system of the vehicle, for example, and allows the vehicle to be moved minutely without stepping on the accelerator pedal. This makes it possible to easily make slight movements such as when parking the vehicle.

〔Effect of the invention〕

As described above, according to the present invention, even when the shift lever device is provided with a function different from the normal shift operation, the operation section for the incidental function is configured independently from the normal shift lever. This has the excellent effect of allowing each operation to be performed smoothly and easily.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of the shift lever device of the embodiment, Fig. 2 is a plan view of the same, Fig. 3 is a sectional view of the same, Fig. 4 is a plan view of the detent locking plate, Fig. 5 is a side view of the same, Figure 6 is a bottom view of the same.
Figure 7 is a plan view of the switch lever, Figure 8 is a front view of the same,
FIG. 9 is a side view of the same. 14...Shift lever-124...Cam plate, 2
8...Cam pin, 32...knob, 34...detent locking plate, 36...detent ball, 40...
Main guide groove, 44... triangular groove, 44H... sub guide groove (
triangular groove). 46...Sub-operation protrusion, 48...Switch lever 62
···Limit switch.

Claims (1)

[Claims] (1) A main guide groove along the main operation direction of the shift lever where the detent ball fits into the detent locking plate attached to the shift lever, and a sub-operation direction perpendicular to the main operation direction at a specific shift position of the main guide groove. A sub-guide groove is provided along the shift lever to enable two-dimensional shifting of the shift lever, and the shift lever is linked with the detent locking plate only at a shift position corresponding to the sub-guide groove to enable reciprocating movement in the sub-operation direction. A shift lever device for an automatic transmission characterized by being equipped with a switch lever.