JPH03239865A - Automatic transmission operating device - Google Patents

Abstract

PURPOSE:To change transmission range even at the time of a fault by providing a clutch mechanism for connecting/disconnecting an output member connected to a transmission operating part to an actuator output part and a transmission route switching mechanism for disconnecting the clutch mechanism by an auxiliary shift lever connected to an auxiliary output member and engaging the output member with the auxiliary output member. CONSTITUTION:At the time of normal operation, a main shift lever 2 is operated to ON-operate a desired switch 19, whereby a drive signal according to the transmission signal of a switch unit 18 is outputted from a control part 13, and a transmission switching lever is rotated through an output lever 5 and a wire 6 by an electric motor 28 to change the range of an automatic transmission 7. At the time of abnormality such as disconnection, an auxiliary shift lever 9 is operated to disconnect the output lever 5 from the output shaft 4 and engage the output lever 5 with an auxiliary output lever 11 by a transmission route switching mechanism, and the auxiliary lever 9 is connected to a change lever 8 through the wire 6, the auxiliary output lever 11 and the output lever 5, whereby transmission range can be forcedly switched by the operation of the auxiliary shift lever 9.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an automatic transmission operating device, and particularly to a shift lever that operates an automatic transmission to change gears through an actuator, and a shift lever that operates an automatic transmission mechanically without an actuator. The present invention relates to an automatic gear shift operating device including an auxiliary shift lever for shifting gears.

[Prior art]

In general, as a gear shift operation device for operating a vehicle's automatic transmission, the shift lever is installed between the left and right front seats.
Widely adopted systems are those in which the gear range is changed by operating the gear shift operation section of an automatic transmission connected to the vehicle.

However, with this disguise operation device, the shift operation part of the automatic transmission must be manually operated via the shift lever and cable, so the shift lever operation is heavy and lacks operability, and the shift lever itself is large. This has become a major constraint on the layout.

Therefore, for example, Japanese Patent Publication No. 62-30509 discloses an automatic transmission system that converts the operation of the shift lever into an electric signal and drives an actuator based on this electric signal to operate the speed change operation section of the automatic transmission. The operating device is described.

(Problem to be Solved by the Invention) In the automatic transmission operating device described in the above publication, the shift lever
Since the operation of the shift lever is converted into an electrical signal, the shift lever operation can be made easier, and the shift lever itself can be made smaller, improving operability and layout. Therefore, from the viewpoint of fail-safety, it is preferable to provide an auxiliary shift lever that directly operates the shift operation section of the automatic transmission without using an actuator.

SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic shift operating device that can forcibly change the shift range by operating an auxiliary shift lever even in the event of a failure such as a wire breakage.

[Means for Solving the Problems] An automatic gear shift operating device according to the present invention converts the operation of a shift lever into an electric signal, transmits it to an actuator, and operates an automatic transmission to change gears via the actuator. , an output member connected to a speed change operation section of the automatic transmission, a clutch mechanism that connects and disconnects the output member and the output section of the actuator, and an auxiliary output member that can be engaged with the output member. and an auxiliary shift lever connected to the auxiliary output member, and a transmission path switching mechanism that disconnects the clutch mechanism and engages the output member and the auxiliary output member in conjunction with the operation of the auxiliary shift lever. It is something.

[Effect]

In the automatic transmission device according to the present invention, the operation of the shift lever is converted into an electric signal and transmitted to the actuator, and the automatic transmission is connected to the output member by the output member connected to the output part of the actuator via the clutch mechanism. By operating the shift operation section of the transmission, the shift range of the automatic transmission can be changed in accordance with the operation of the shift lever.

On the other hand, even if the shift range of the automatic transmission cannot be changed normally by operating the shift lever due to a malfunction such as a disconnection,
When the auxiliary shift lever is operated, the clutch mechanism is separated by the transmission path switching mechanism in conjunction with the auxiliary shift lever operation, and the auxiliary output member connected to the auxiliary shift lever and the output member are engaged, and the auxiliary shift lever is - and the shift operating section are mechanically connected via the auxiliary output member and the output member, and the shift range of the automatic transmission can be forcibly changed by operating the shift operating section using the auxiliary shift lever.

〔Effect of the invention〕

According to the automatic gear shift operating device according to the present invention, the above [effect]
As detailed in the section above, since the automatic transmission is equipped with an auxiliary shift lever that is mechanically connected to the shift operation section, it can be used even in abnormal situations where the shift range cannot be changed normally by operating the shift lever. By operating the auxiliary shift lever, the shift range of the automatic transmission can be forcibly changed.

Moreover, by providing a transmission path switching mechanism, by simply operating the auxiliary shift lever, the clutch mechanism can be separated to prevent adverse effects caused by actuator malfunction, and the auxiliary shift lever can be mechanically connected to the gear shift operation section. You can immediately change the gear range of the automatic transmission.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

In this embodiment, the present invention is applied to a gear shift operation device for an automobile equipped with an automatic transmission.

As shown in FIG. 1, this automatic gear shift operation device 1 converts the operation of a main shift lever 2 into an electric signal to
a main shift operating device that operates a switching lever 8 of an automatic transmission 7 that is connected to the output lever 5 via a wire 6 through an output lever 5 that is connected to the output shaft 4 of the drive unit 3; As a fail-safe in the event that the main shift operating device fails due to wire breakage, etc., the connection between the output shaft 4 and the output lever 5 is separated by operating the auxiliary shift lever 9, and the connection is connected to the auxiliary shift lever 9 via a wire 10. The auxiliary shift operating device engages the auxiliary output lever 11 and the output lever 5 and mechanically connects the auxiliary shift lever 9 and the switching lever 8 to perform a shift operation.

The main shift operating device is constructed of a main operating section 12, a control section 13, and a drive section 3 as follows.

As shown in FIGS. 1 to 4, the main operation section 12 is located on a dash board 1 near the steering handle 15.
6, a casing 17 rotatably supported via a support shaft 14 extending in the vehicle width direction, a switch unit 18 built into the casing 17, and a main shift extending upward from the switch unit 18 through the casing 17. lever
2, and the switch unit 18 has 5 keys corresponding to parking range 'PJ', 'N' retraction range 'R', neutral range 'N', forward 2nd gear range '2', and 1st forward gear range 'L', respectively, from the front side. one switch 19 is provided,
By operating the main shift lever 2 in the front-back direction to close the desired switch 19, the closed switch 1
A speed change signal corresponding to 9 is output to the control section 13.

As shown in FIG.
It is rotatably driven between a storage position shown by the imaginary line in the storage part 24 formed in the storage part 24 and a use position shown by the solid line rotated rearward.

To explain the drive section 3, as shown in FIGS. 3 to 6, an electric motor 28 is mounted on the upper surface near the front end of the shaft tunnel 26 below the air conditioner unit 25.
is fixed, and a gear case 27 is attached to the front of the electric motor 2B.
An electric motor 28 is fixed to the gear case 27 and extends into the gear case 27.
A worm gear 29 is fixed to the rotating shaft 28a, and an output shaft 4 facing perpendicular to the rotating shaft 28a is rotatably supported in the middle part of the gear case 27, and meshes with the worm gear 29 in the middle part of the output shaft 4. An output lever 5 is connected to the right end of the output shaft 4, to which the worm wheel 30 is fixed and extends outside the gear case 27, via a clutch mechanism to be described later, and the output lever 5 is connected to the switching lever of the automatic transmission 7 via a wire 6. 8 is connected.

The control unit 13 includes a CPU (central processing unit) and a ROM (
It is composed of a microcomputer mainly consisting of read-only memory (read-only memory) and RAM (random access memory), and when the ignition switch is turned on, the electric motor 22 is driven to rotate the main operation unit 12 to the use position. , is turned to the storage position by the OFF operation, and signals from various switches such as the accelerator switch, brake switch, parking brake switch, hazard switch, inhibitor switch, and switch unit 18, and various sensors such as the vehicle speed sensor and crank angle sensor are transmitted. Drives the electric motor 28 in response to signals from sensors,
The switching lever 8 is rotated via the output lever 5 and the wire 6 to change the speed of the automatic transmission 7. In addition, the above ROM
A control program for automatic shift control for shifting the automatic transmission is input and stored in advance, but since this automatic shift control is similar to a known one, a detailed explanation thereof will be omitted.

As shown in FIGS. 2 to 4, the auxiliary shift operating device connects an auxiliary operating section 33 provided at the front of a center console 31, an output lever 5, and an output shaft 4 so as to be connectable/disconnectable. an auxiliary output lever 11 that is connected to the auxiliary shift lever 9 of the auxiliary operating section 33 via a wire 10 and can be engaged with the output lever 5;
It is provided with a transmission path switching mechanism that disconnects the clutch mechanism and engages the output lever 5 and the auxiliary output lever 11 in conjunction with the rotational operation of the clutch mechanism.

The auxiliary operation section 33 has the same configuration as a normal speed change operation device, so to briefly explain it, as shown in FIGS. 1 and 4, a substantially U-shaped guide plate is provided on the upper surface of the shaft tunnel 26. 37 is fixed, and an auxiliary shift lever 9 is rotatably supported between the front and rear legs of the guide plate 37 via a shaft member 35 oriented in the left-right direction, and the hill half of the auxiliary shift lever 9 is connected to the center console 31. A guide slit 38 is formed in the guide plate 37 to restrict rotation of the auxiliary shift lever 9, and a bushing provided on the knob of the auxiliary shift lever 9 is housed in a housing portion 32 formed at the front of the auxiliary shift lever 9. After operating a switch (as shown) to release the engagement between the auxiliary shift lever 9 and the guide slit 38, the auxiliary shift lever 9 is rotated to a desired shift range to change gears.

To explain the clutch mechanism, as shown in FIGS. 7 to 9, an output lever 5 is rotatably attached to the left part of the output shaft 4 extending rightward from the gear case 27. A spline shaft portion 4a is formed near the right end of the output shaft 4, and a substantially cylindrical dog 39 is attached to the spline shaft portion 4a. A pair of engagement recesses 40 are formed at the right end of the boss portion 5a of the output lever 5, and a pair of engagement recesses 40 are formed at the left end of the dog 39 and are spline-fitted so as to be movable in a direction. A retaining convex portion 41 is formed, a substantially disc-shaped spring receiving plate 42 is fixed to the outer end of the output shaft 4, and a flange 39a formed at the right end of the dog 39 is connected to the spring receiving plate 42. is provided with a compression coil spring 43 that urges the dog 39 toward the output lever 5 side, and as shown in FIG. 8, when the engagement protrusion 41 is engaged with the engagement recess 40, the output lever 5 The dog 39 is connected to the output shaft 4 through the dog 39 in a relatively non-rotatable manner, and as shown in FIG. It is separated from the axis 4.

To explain the above-mentioned transmission path switching mechanism, as shown in FIGS. 6 to 9, the boss portion 5a of the output lever 5 and the outer diameter of the dog 39 are formed to have approximately the same diameter, and the output lever 5a is formed on the dog 39. Auxiliary output lever 1 movable to boss portion 5a of
The outer end of the auxiliary output lever 11 is connected to the middle part of the auxiliary shift lever 9 via a wire 10, and the auxiliary shift lever 9 is connected to the frontmost position (parking range) via a tension spring 44. A compression coil spring 49 is provided between the auxiliary output lever 11 and the spring receiving plate 42 for biasing the auxiliary output lever 11 toward the output lever 5 side.

The auxiliary output lever 11 is formed with a pair of retaining protrusions 45 that come into contact with the right end surface of the output lever 5, and the output lever 5 is formed with a retaining part 46 that can engage with the engaging protrusion 45. A pair of partially cylindrical cam portions 4 are provided on the right end surface of the auxiliary output lever 11.
7 is formed in a protruding shape toward the right, and L pairs of protrusions 48 are formed on the left end surface of the flange portion 39a that can come into contact with the cam portion 47, and the auxiliary shift lever 9 is held at the frontmost position. The protruding part 48 does not come into contact with the cam part 47 in this state, but when the auxiliary shift lever 9 is rotated, the protruding part 48 passes through the tapered surface 47a of the cam part 47 and rides on the cam part 47, as shown in FIG. As shown by the solid line in , the dog 39 moves to the right and the engagement protrusion 41 is disengaged from the engagement recess 40. When the dog 39 is rotated further, the engagement protrusion 45 engages with the engagement part 46. As shown by the imaginary line, the output lever 5 and the output shaft 4 are separated, and the output lever 5 and the auxiliary output lever 11 are connected so as not to be relatively rotatable.

Next, the operation of the automatic transmission operating device 1 will be explained.

During normal operation, by operating the main shift lever 2 in the longitudinal direction and turning on the desired switch 19,
A drive signal corresponding to the speed change signal from the switch unit 18 is output from the control unit 13 to the electric motor 28, and the electric motor 28 rotates the speed change lever via the output lever 5 and the wire 6, and the automatic transmission 7 The gear range of the main shift lever 2 can be changed, but due to a disconnection etc.
In the event of an abnormality in which the shift range cannot be changed even if the shift range is operated, by operating the auxiliary shift lever 9, the output lever 5 and the output shaft 4 are separated by the transmission path switching mechanism, and the output lever 5 and the auxiliary output lever are separated. The auxiliary shift lever 9 and the switching lever 8 are connected via the wire 6, the auxiliary output lever 11, and the output lever 5, and the shift range is changed according to the operation of the auxiliary shift lever 9. is forcibly switched.

As mentioned above, by providing the auxiliary gear shift operation device,
Even in the event of a failure of the main shift operating device due to a disconnection or the like, it is possible to forcibly operate the switching lever 8 and shift the automatic transmission 7 by operating the auxiliary shift lever 9. Moreover, by providing a simple clutch mechanism and a transmission path switching mechanism, the output lever 5 and the output shaft 4 can be rotated by rotating the auxiliary shift lever 9 during gear shifting operation.
By separating the output lever 5 and the auxiliary output lever 1, it is possible to prevent adverse effects caused by abnormal rotation of the electric motor 28.
1, the gear shifting operation can be started immediately.

Note that the main operation section 12 may be provided on the center console 31 of the left and right front seats.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is an overall configuration diagram of an automatic transmission operating device, FIG. 2 is a perspective view of main parts near the center console and dash board, and FIG. 3 is a view from the arrow ■ in FIG. 2. Figure 4 is a cross-sectional view taken along the line IV--IV in Figure 3, Figure 5 is a cross-sectional view of the drive section, Figure 6 is a cross-sectional view taken along the line ■-■ in Figure 5, and Figure 7 is a cross-sectional view taken along the line
The figure is a perspective view of the main parts of the clutch mechanism and transmission path switching mechanism.
FIG. 8 is a cross-sectional view of the clutch mechanism and transmission path switching mechanism, and FIG. 9 is an explanatory diagram of the operation of the clutch mechanism and transmission path switching mechanism. 1. Automatic gear shift operation device, 2. Main shift lever
3. Drive unit, 4. Output shaft, 5. Output lever 7. Automatic transmission, 8. Switching lever 9. Auxiliary shift lever 11. Auxiliary output lever b: Blade lever Fig. 3 ■ 2 ■ Figure 7 Figure 9

Claims (1)

[Claims] (1) In an automatic transmission operating device that converts shift lever operation into an electric signal and transmits it to an actuator to operate an automatic transmission to change gears, an output member connected to the transmission operation section of the automatic transmission. a clutch mechanism that connects and disconnects the output member and the output section of the actuator; an auxiliary output member that can be engaged with the output member; and an auxiliary shift lever connected to the auxiliary output member; An automatic transmission operating device comprising: a transmission path switching mechanism that disconnects a clutch mechanism and engages an output member and an auxiliary output member in conjunction with operation of an auxiliary shift lever.