JP3076170B2 - Shifting device for automatic transmission - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shift operating device used for an automatic transmission of a vehicle.

[0002]

2. Description of the Related Art An apparatus for shifting an automatic transmission of a vehicle is arranged on the floor of the vehicle and connected to the automatic transmission, and mechanically shifts the automatic transmission by selecting a lever. A shift lever device is generally used. Recently, the shift lever device is disposed near the steering wheel, electrically detects a shift position selected by the shift operation, and shifts the automatic transmission based on the detection signal. An operating device with a configuration is contemplated.

A shift operating device for an automatic transmission of this type includes an operation knob for performing a shift operation and a switch for detecting a shift position selected by the operation knob. The shift position of the operation knob corresponds to the P shift range, R shift range, N shift range, or D shift range of the automatic transmission. The shift position is detected by a switch, and the automatic shift is performed based on the detection signal. It is a configuration to shift the machine.

In such a shift operating device for an automatic transmission, it is not preferable that the automatic transmission can shift indefinitely irrespective of the running state of the vehicle. Therefore, the so-called shift operation is possible only under specific conditions. A shift lock mechanism is required.

In this case, a detection signal of a switch operated by operating the operation knob and a condition such as a running state of the vehicle set in a specific shift range are determined by a computer or the like. It is conceivable that the automatic transmission does not shift regardless of the operation (even when the switch is operated), but the control device and its software are complicated and expensive.

[0006]

SUMMARY OF THE INVENTION In consideration of the above fact, the present invention not only can detect the shift position selected by the shift operation electrically and can shift the automatic transmission based on the detected signal, but also can provide a simple transmission. It is an object of the present invention to provide a shift operation device for an automatic transmission that has a structure that can surely be in a shift lock state under predetermined conditions.

[0007]

A shift operating device for an automatic transmission according to the present invention is used for an automatic transmission having a P shift range, an R shift range, an N shift range, and one or more D shift ranges. The shift operation device is provided so as to be rotatable and axially movable with respect to the axis of the main body formed in a substantially cylindrical shape, and is rotated to a shift position provided corresponding to the N shift range and the D shift range. And the P shift range and R
An operation knob that is axially moved to a shift position provided corresponding to a shift range and is selectively operated; a switch unit that detects a selected shift position of the operation knob; and an operation knob that is disposed along an axis of the main body. A shaft that is connected to the operation knob and is interlocked with the axial movement of the operation knob, and is disposed so as to be able to engage with and disengage from the shaft;
A lock plate that prevents axial movement of the shaft in the engaged state; and a lock plate that is connected to the lock plate, and is in a stopped state when the operation knob is selected to the P shift range, thereby locking the lock plate. When the lock plate is disengaged from the shaft by being engaged with the shaft and operated by a predetermined brake operation, and when the operation knob is selected to the N shift range, the lock plate is in accordance with the N shift range. A solenoid that operates at a predetermined vehicle speed or less to disengage the lock plate from the shaft and is stopped at a predetermined vehicle speed or more to engage the lock plate with the shaft; The lock plate is connected to the lock plate and independent of the operation of the solenoid. It is characterized by a with a, and Rerizunobu capable of being released from the shaft.

[0008]

According to the shift operation device for an automatic transmission having the above-described structure,
By rotating the operation knob, a shift position provided corresponding to the N shift range or the D shift range is selected, and this is detected by the switch unit, and the automatic transmission is shifted. By moving the operation knob in the axial direction, a shift position provided corresponding to the P shift range or the R shift range is selected, and this is detected by the switch unit, and the automatic transmission is shifted.

Here, in a specific shift range,
The solenoid operates according to individually set conditions.

That is, when the operation knob is selected in the P shift range, the solenoid is thereby stopped. Therefore, in this state, the lock plate is engaged with the shaft, and the axial movement of the shaft is prevented. Therefore, the operation knob is prevented from moving in the axial direction, that is, moving to another shift range, and is brought into the shift locked state. Further, when a predetermined brake operation is performed in this state, the solenoid is operated and the lock plate is detached from the shaft. Thereby, the shaft can be moved in the axial direction, and the shift operation of the operation knob can be performed again.

As described above, when the operation knob is selected in the P shift range, a so-called P range shift lock in which the shift operation of the operation knob is prevented unless a predetermined brake operation is performed.

On the other hand, when the operating knob is selected in the N shift range, the solenoid operates at a predetermined vehicle speed or less set in accordance with the N shift range. Therefore, in this state, the lock plate is detached from the shaft, and the shaft can move in the axial direction. For this reason,
The operation knob can be rotated and moved in the axial direction, and can be shifted to each shift range.
On the other hand, when the vehicle speed is equal to or higher than the predetermined vehicle speed set in accordance with the N shift range, the solenoid is stopped. Therefore, in this state, the lock plate is engaged with the shaft, and the axial movement of the shaft is prevented. For this reason, the operation knob moves in the axial direction, that is, the R shift range and the P shift.
Movement to the shift range is prevented, and the shift lock state is set.

As described above, when the operation knob is selected in the N shift range, the shift operation of the operation knob to the R shift range and the P shift range is prevented unless the vehicle speed reaches a predetermined speed or less. Inhibit.

As described above, not only can the automatic transmission be shifted by detecting the shift position selected by the shift operation of the operation knob, but also the solenoid can be operated in accordance with the conditions set in a specific shift range. When actuated, the lock plate prevents axial movement of the shaft or operating knob, and the simple structure of a single solenoid and lock plate allows
The shift lock state can be established under predetermined conditions.

Further, when the release knob is operated,
The lock plate is disengaged from the shaft regardless of the operation of the solenoid. Therefore, even when the power supply is cut off, the shaft can be moved in the axial direction, that is, the operation knob can be operated, which is also effective in the case of maintenance work or the like.

[0016]

FIG. 1 is a front view of a shift operating device 10 of an automatic transmission according to the present invention, and FIG. 2 is a left side view of the shift operating device 10. FIG. 3 is a cross-sectional view of the shift operation device 10 along the line 3-3 in FIG. 1, and FIG. 4 is a cross-sectional view of the shift operation device 10 along the line 4-4 in FIG. It is shown. 5 and 6 are exploded perspective views of the shift operation device 10. FIG. In FIGS. 5 and 6, some components are shown in duplicate.

The shift operating device 10 is used in an automatic transmission having an R shift range, a P shift range, an N shift range, a D shift range, a 2 shift range, and an L shift range.

The shift operating device 10 includes a substantially cylindrical main body 1.
2 is provided. The main body 12 is fixed to a substrate 14 and is arranged near a steering wheel (not shown) of the vehicle. A pipe 16 is fixed to the substrate 14 along the axis of the main body 12. Here, the shift operation device 10 includes an operation unit 20, a switch unit 80, and a shift lock unit 100. Hereinafter, each part will be sequentially described.

In the operation section 20, an operation knob 22 is disposed at the tip of the main body 12. The operation knob 22 is formed in a substantially cylindrical shape corresponding to the main body 12, and movably enters the guide groove 18 of the main body 12. That is, the operation knob 22 is overlapped with the distal end of the main body 12, and can rotate around the axis and move along the axis with respect to the main body 12.

A holder 24 is arranged inside the operation knob 22 (the tip of the main body 12). The holder 24 is a substantially cylindrical block material, and is located corresponding to the tip of the main body 12. The holder 24 has a through hole 26 at its center.
Are formed, and the pipe 16 is inserted into the through hole 26.
And is integrally connected to an arm portion 28 extending from the operation knob 22. Thus, the holder 24 always rotates integrally with the operation knob 22 (the pipe 1).
6) and axially (along pipe 16).

A guide groove 30 in a pattern is formed on the peripheral surface of the holder 24. In the guide groove 30, the main body 12 is provided.
A pin 32 protruding and fixed inward from the tip end of the wire 32 enters. Thus, the holder 24, that is, the operation knob 22 is configured to be rotatable and axially movable within a range in which the pin 32 can move in the guide groove 30.

Here, the shift operation pattern of the operation knob 22 is “P”, “R”, “N”, “D”,
It is configured as shown in FIG. 1 corresponding to each shift range of “2” and “L”.
Are formed corresponding to the shift operation pattern of the operation knob 22. That is, the shift operation in the direction of arrow A in FIG. 1 is performed by turning the operation knob 22 (holder 24),
The shift operation in the direction of arrow B in FIG.
The guide groove 30 is for restricting the rotation and the axial movement of the holder 24, that is, the operation knob 22, in the guide groove 30.

The holder 24 has a pair of pieces 34.
Is incorporated. Each piece 34 is housed together with a spring 38 in a housing hole 36 formed in the holder 24, and is constantly urged in a protruding direction.

A pair of click mounts 40 are arranged between the holder 24 and the tip of the main body 12 so as to correspond to the pieces 34. The click mount 40 is formed in a gutter shape and is fixed to the inner peripheral surface of the main body 12, and further has an uneven portion 42 formed on the inner peripheral wall along the axial direction of the main body 12. The uneven portion 42 corresponds to the axial movement of the operation knob 22 (holder 24) (shift operation movement in the direction of arrow B in FIGS. 1 and 5).
4 gets over the uneven portion 42, the holder 2
4, that is, the movement of the operation knob 22 in the axial direction is performed with moderation.

The click mount 40 has a retracting portion 44 formed near the concave / convex portion 42, and the operation knob 2
The piece 34 moves in the retreating part 44 when the 2 (holder 24) rotates, which will be described later, so that the rotation of the operation knob 22 (holder 24) is not hindered.

A fitting groove 46 is provided at the center of the holder 24.
Are formed. As shown in FIG. 7, the fitting groove 46 includes a first groove 48 and a second groove 50 and an inclined surface 49 communicating these.
Thus, a pin 54 of a shaft 52 slidably housed in the pipe 16 enters the fitting groove 46. here,
The pattern shapes of the fitting grooves 46 (the first groove 48 and the second groove 50) are “R”, “P”, “N”,
It is formed corresponding to the shift operation patterns of “D”, “2”, and “L”. That is, the first groove 48 corresponds to each shift position of “R”, “P”, “N”, “D”, “2”, and when the operation knob 22 is selected to these shift positions. The pin 54 is located, while the second groove 50 corresponds to the “L” shift position, and the operation knob 22 is changed from the “2” shift position to the “L” shift position. In this case, the pin 54 can be relatively moved from the first groove 48 to the second groove 50. That is, the fitting grooves 46 are “R”, “P”, “N”,
Between the “D”, “2”, and “L” shift positions, the holder 24 (operation knob 22) with respect to the shaft 52
For enabling relative rotation.

On the other hand, an arm 56 extends from the rear part of the holder 24 (the side opposite to the operation knob 22), and its tip reaches a switch part 80 described later. A display pin 58 is fixed to the tip of the arm 56. Further, a pair of fitting grooves 60 are formed at a rear portion of the holder 24.
The fitting groove 60 is formed in parallel with the axis of the holder 24, and has an arm portion 64 of the rotor 62, which will be described in detail later, inserted therein.

A rotor 62 is arranged on the side of the holder 24. The rotor 62 is formed in a substantially disk shape, is rotatably attached to the outer periphery of the pipe 16, and is prevented from falling off by a C-ring 63 (that is, the rotor 62 moves in the axial direction with respect to the pipe 16). It is held in a state where it is blocked and only rotation is possible). Rotor 62
, A pair of arm portions 64 is formed on the side wall on the holder 24 side so as to protrude. The arm portion 64 is slidably inserted into the fitting groove 60 of the holder 24. Thus, the holder 24 can move relative to the rotor 62 only along the axial direction, and integrally rotates around the axis.

The rotor 62 incorporates a pair of rollers 66. Each roller 66 includes a roller holder 69 and a spring 70 in a housing portion 68 formed in the rotor 62.
And is always urged in the protruding direction.

A click mount 72 corresponding to the roller 66 is provided between the rotor 62 and the tip of the main body 12.
Is arranged. The click mount 72 is formed in a ring shape and is fixed to the inner peripheral surface of the main body 12. Further, a pair of concave and convex portions 74 are formed on the inner peripheral wall along the circumferential direction of the main body 12. The uneven portion 74 is rotated by the rotation of the operation knob 22 (holder 24) (see arrow A in FIG. 1 and FIG. 5).
(The shift operation movement in the direction), and when the roller 66 gets over the uneven portion 74, the rotation of the holder 24, that is, the operation knob 22 is performed with moderation.

As described above, in the operation unit 20, the operation knob 22 is provided so as to be rotatable and movable in the axial direction with respect to the axis of the main body 12 (the pipe 16).
Is rotated to the shift position provided corresponding to the shift range of "P" or "R", and is selected and operated axially to the shift position provided corresponding to the shift range of "P" or "R". Further, these movements are performed by the holder 24.
(Piece 34) and the rotor 62 (roller 66).

A switch section 80 is arranged on the side of the operation section 20. In the switch section 80, a contact plate 82 is fixed to the rear wall of the rotor 62,
A printed circuit board 84 is arranged facing the contact plate 82. The contact plate 82 has a contact 86 extending toward the printed circuit board 84, and the contact 86 is in contact with the printed circuit board 84.
Printed circuit board 84 has a pattern (ring)
When the contact position of the contact 86 is changed, a contact plate 82 is formed.
That is, the rotational position of the rotor 62 can be electrically detected. That is, the rotation position of the operation knob 22 that rotates around the axis together with the rotor 62, in other words, the shift position of the operation knob 22 out of the shift positions provided corresponding to the shift ranges of “N” and “D” described above. The selected position can be detected.

The print circuit board 84 is electrically connected to the automatic transmission via a control device (not shown), and shifts the automatic transmission based on the detection signal.

In this case, since the "N" shift position and the "P" shift position are at the same position in the rotation direction (around the axis) of the operation knob 22, the detection of the "P" shift position is not performed. Not performed by the contact plate 82 and the printed circuit board 84,
This detection is performed by the switch 148.

A display window 88 is provided on a side surface of the main body 12 corresponding to the switch section 80, and displays the shift operation pattern. Opposing this display window 88,
The display pin 58 fixed to the tip of the arm 56 of the holder 24 is located. As a result, the selected shift position of the holder 24, that is, the operation knob 22 is displayed on the display window 88.
This is the configuration shown in FIG.

The switch unit 80 is provided with an LED unit 90 and a light guide 92.
8 can be illuminated from inside.

A shift lock unit 100 is arranged beside the switch unit 80. In the shift lock unit 100,
The holding block 170 is arranged. Holding block 1
In 70, a through hole 172 is formed corresponding to the pipe 16, and the pipe 16 passes through the through hole 172. Further, a fixing hole 174 is formed in the holding block 170, and the support shaft 120 is fixed in a protruding state. Further, a fixing hole 176 is formed in the holding block 170, and the support shaft 142 is fixed in a protruding state.

The other end of the shaft 52 housed in the pipe 16 and connected to the holder 24 via the pin 54 reaches the end of the pipe 16 passing through the through hole 172 of the holding block 170. I have. A spring 102 is disposed between the shaft 52 and the substrate 14 in the pipe 16, and constantly biases the shaft 52 toward the operation knob 22. Note that the urging force of the spring 102 is smaller than the above-described force of the piece 34 going over the concave and convex portion 42 of the click mount 40. In other words, the urging force of the spring 102 prevents the holder 24 (the operation knob 22) from moving. Is set.

A detent pin 104 is fixed to the other end of the shaft 52 and protrudes from a long hole 106 formed in the pipe 16 to the outside.

The lock plate 10 is provided on the side of the pipe 16 (elongated hole 106) in correspondence with the detent pin 104.
8 are arranged. The lock plate 108 has a substantially rectangular plate shape, and is disposed so as to be movable in a direction in which the lock plate 108 comes into contact with and separates from the detent pin 104 (the long hole 106). Lock plate 1
08 is formed with a U-shaped engagement groove 110 on the side facing the detent pin 104.
When the lock plate 108 moves in a state where the lock plate 108 and the lock plate 108 face each other, the engagement grooves 110
The detent pin 104 can be inserted in the
In a state where the detent pin 104 is moved to the side of the substrate 14 most (a state where the operation knob 22 is selected in the “P” shift range), the lock plate 108 moves closer to the periphery of the lock plate 108 and the elongated hole 106. The detent pin 104 can be sandwiched between the wall and the wall. A state in which the detent pin 104 is fitted in the engagement groove 110,
When the detent pin 104 is sandwiched between the lock plate 108 and the peripheral wall of the long hole 106, the shaft 52 is prevented from moving in the axial direction.

A connecting groove 112 is formed on the side of the lock plate 108, and a lever 114 is connected to the connecting groove 112.

The lever 114 is formed in a substantially L-shape as a whole by an arm 116 and an arm 118.
The center of the shaft 1 is fixed to the holding block 170.
The arm 116 and the arm 118 are rotatably supported by the arm 20 and can rotate. A connecting portion 124 having a shaft 122 is formed at the tip of one arm 116, and the connecting portion 124 (shaft 122) enters the connecting groove 112 of the lock plate 108 and is connected.
Therefore, when the lever 114 (arm 116) rotates, the lock plate 108
04 (elongated hole 106).

On the other hand, the other arm 118 of the lever 114
A connecting portion 128 having a fitting groove 126 is formed at the tip of the connecting portion 128. The connecting portion 128 (the fitting groove 126)
A pin 134 fixed to the plunger 132 of the solenoid 130 enters and is connected. Solenoid 130
Are positioned and fixed in the storage section 178 of the holding block 170.

When the solenoid 130 is energized, the plunger 1
32, and when no power is supplied, the plunger 132 is pulled out by the urging force of the return spring 136 provided on the plunger 132. When the solenoid 130 is not energized, the lock plate 108 engages with the detent pin 104 (the elongated hole 106).
) Is set for each part. When the solenoid 130 is energized, the arm 118 is pulled by pulling the plunger 132 against the urging force of the return spring 136, the lever 114 rotates around the support shaft 120, and the lock plate 108 is detented. It is configured to be separated from the pin 104 (the elongated hole 106).

The solenoid 130 is energized and de-energized by electrical control according to the shift position of the operation knob 22 and the running state of the vehicle. Specifically, when the operation knob 22 is selected to the "P" shift position, the power is normally turned off, and the power is excited only when the brake is operated. Operation knob 2
2 is selected in each of the shift positions of “N”, “D”, “2”, and “L”, the vehicle is de-energized when the vehicle is running at a middle speed or higher, and the vehicle is running at a low speed. It is energized and energized only when it is in a state or stopped.

When the operation knob 22 is selected to each of the "D", "2", and "L" shift positions, the power is excited even when the vehicle is running at a low speed or stopped. In other words, the operation knob 22 is shifted from the “N” shift position to the “D”, “2”, and “L” shifts so that the current is excited only after the shift position is changed to the “N” shift position. This is controlled by a shift position detection signal of "N" or the like so that when the position is changed, the energization excitation is released even when the vehicle is running at a low speed or stopped.

A stopper 138 is arranged near the lock plate 108. The stopper 138 is made of rubber, and abuts against the lock plate 108 when the solenoid 130 operates to cushion the impact.

In the vicinity of one arm 116 of the lever 114, a release lever 140 is arranged. The release lever 140 is connected to a support shaft 142 fixed to the holding block 170.
And a connecting pin 144 formed at one end thereof is connected to the arm 116. Therefore, when the release lever 140 rotates around the support shaft 142, the lever 114 (arm 116) also rotates. A release knob 146 that protrudes from the main body 12 to the outside corresponds to the other end of the release lever 140. The release knob 146 can press the other end of the release lever 140 by being pressed, whereby the release lever 140 can be forcibly rotated around the support shaft 142. That is, the release knob 1
By pressing the 46, the lock plate 108 can be separated from the detent pin 104 (the elongated hole 106) by rotating the lever 114 irrespective of the operation of the solenoid 130.

The detent pins 104 (elongated holes 10)
A P switch 148 is arranged near 6). P
The switch 148 is in a state where the detection piece 150 can be engaged with the detent pin 104 and the detent pin 104 is moved to the side of the substrate 14 most (when the operation knob 22 is selected to the “P” shift range). , Detection piece 15
0 can be engaged with the detent pin 104 to detect this. That is, as described above, in the shift operation device 10, the “N” shift position and the “P” shift position
Since the operation knob 22 is located at the same position in the rotation direction (around the axis), the detection of the “P” shift position is not performed by the contact plate 82 and the print circuit board 84, but is performed by the P switch 148. ing.

Although not described in detail, an overdrive switch 160 is provided near the release knob 146.
Is attached.

Next, the operation of the shift operating device 10 having the above configuration will be described. In the shift operation device 10 having the above configuration, each shift position is selected by operating the operation knob 22.

That is, for example, between the respective shift positions of “N”, “D”, and “2”, by rotating the operation knob 22, “N”, “D”, and “2” are shifted. Each shift position is selected. In this case, since the operation knob 22, that is, the holder 24 and the rotor 62 rotate integrally, the rotation of the operation knob 22 causes the rotor 62 to rotate, and the contact 86 of the contact plate 82 fixed to the rotor 62 and the print 86. The contact position with the circuit board 84 is changed, and the contact plate 82 (the rotor 6
2) That is, the selected position of the operation knob 22 is detected. Thus, the automatic transmission is shifted based on the detection signal.

In this case, the pin 54 of the shaft 52 inserted into the fitting groove 46 is, as shown in FIG.
, The operation knob 22 can rotate without being hindered by the shaft 52, and the shaft 52 does not move.

The operation knob 2 is shifted from the shift position of "N".
By moving 2 and rotating it in the axial direction,
The "R" shift position is selected. In this case, the operation knob 22 and the rotor 62 are relatively movable along the axial direction and rotate integrally, so that the rotation of the operation knob 22 causes the rotor 62 to rotate, which is similar to the above. The automatic transmission is shifted by being detected by the switch unit 80.
In this case, since the pin 54 of the shaft 52 is inserted into the first groove 48 of the fitting groove 46, the shaft 52 also moves in the axial direction with the movement of the operation knob 22 in the axial direction as shown in FIG.

Further, by moving the operation knob 22 from the "N" shift position in the axial direction, the "P" shift position is selected. In this case, since the pin 54 of the shaft 52 is inserted into the first groove 48 of the fitting groove 46, the shaft 52 is also moved in the axial direction with the movement of the operation knob 22 (holder 24) in the axial direction as shown in FIG. Go to As a result, the detection piece 150 of the P switch 148 engages with the detent pin 104, and this is detected, and the automatic transmission is shifted.

Further, the operating knob 22 is axially moved and rotated from the shift position "2" to select the shift position "L", which is detected by the switch section 80 in the same manner as described above. The automatic transmission is shifted. In this case, as shown in FIG. 7, since the pin 54 of the shaft 52 that has entered the first groove 48 of the fitting groove 46 can relatively move from the first groove 48 to the second groove 50, the operation knob 22 (holder) Even if 24) moves in the axial direction, the shaft 52 is not moved. That is, the operation knob 2
When 2 is operated from the “2” shift position to the “L” shift position, the shaft 52 does not move even if the operation direction is the same axial direction as when selecting the “P” shift position ( In other words, when the shift position “P” is selected, the shaft 52 also moves in the axial direction.) Therefore, when the “L” shift position is selected by the operation knob 22, the detection piece 150 of the P switch 148 does not engage with the detent pin 104, and the P switch 148 does not needlessly operate.

On the other hand, the movement of the operation knob 22 is caused by the movement of the holder 24 (piece 34) and the rotor 62 (roller 66).
This is done with moderation. In this case, operation knob 2
The axial movement of the holder 2 is not transmitted to the rotor 62 but moves relative to each other, and only the rotation is transmitted to rotate integrally, and the axial movement of the operation knob 22 (holder 24) is performed. The rotation of the operation knob 22 (the holder 24 and the rotor 62) is performed by the roller 66 while the moderation is performed with the piece 34 and the click mount 40 (the uneven portion 42).
And the click mount 72 (concavo-convex portion 74) with moderation. In other words, the moderation mechanism for moving the operation knob 22 in the axial direction and the moderation mechanism for rotating the operation knob 22 are configured separately and independently from each other, so that the durability of each of the components constituting the moderation mechanism is greatly increased. In addition, the shape of each component can be simplified.

In the shift operating device 10, the solenoid 130 is operated in a specific shift range according to individually set conditions. The operation in this case will be sequentially described according to the shift position of the operation knob 22 and the traveling state of the vehicle.

When the operating knob 22 is selected to the "P" shift position (vehicle stopped state), the shaft 5 is inserted into the end of the first groove 48 of the fitting groove 46 of the holder 24 as shown in FIG.
In this state, the operation knob 22 is in the state of being pushed most toward the main body 12, and the detent pin 104 of the shaft 52 is
6 is located at the end on the substrate 14 side. In this state, since the solenoid 130 is in a non-energized state, the plunger 132 is pulled out by the urging force of the return spring 136 provided on the plunger 132. Therefore, the lock plate 108 connected via the lever 114 reaches the elongated hole 106, and the detent pin 104 is sandwiched between the lock plate 108 and the peripheral wall of the elongated hole 106.

Thus, the shaft 52 is prevented from moving in the axial direction, and the pin 54 is inserted into the first groove 48 of the fitting groove 46.
The operation knob 22 (holder 24) connected to the shaft 52 at the end of the shaft 52 is also prevented from moving in the axial direction. Further, the pin 32 inserted into a position corresponding to the “P” position of the guide groove 30 of the holder 24 causes the holder 24
That is, the rotation of the operation knob 22 is also prevented. Accordingly, the shift lock state (so-called “P”) in which the movement of the operation knob 22 from the “P” shift position to another shift position is prevented.
P range shift lock).

When the brake is operated, the solenoid 130 is energized and excited, whereby the plunger 132 is retracted against the urging force of the return spring 136, the arm 118 is pulled, and the lever 114 is pivoted. Rotating around 120, the lock plate 108 is separated from the detent pin 104 (the long hole 106). Therefore, the movement of the shaft 52 in the axial direction, that is, the operation knob 2
2 can be moved from the “P” shift position to the “N” shift position (P range shift lock is released).

On the other hand, when the operation knob 22 is selected to the "N" shift position, the solenoid 130 is energized and energized when the vehicle is stopped or running at a low speed, whereby the plunger 132 is retracted. Arm 11
8 is pulled, the lever 114 rotates around the support shaft 120, and the lock plate 108 is separated from the detent pin 104 (the elongated hole 106). Therefore, the shaft 52, that is, the operation knob 22 can be moved in the axial direction. Further, in this state, the holder 24, that is, the operation knob 22 is rotatable relative to the shaft 52 within a range in which the pin 54 can move in the fitting groove 46. Therefore, by rotating the operation knob 22 from the “N” shift position, it is possible to select and operate the “D” and “2” shift positions,
The operation knob 22 can be selectively moved to the “R” shift position by moving the operation knob 22 from the “N” shift position in the axial direction and rotating the operation knob 22. Further, the operation knob 22 can be moved in the axial direction from the “N” shift position. Thus, the selection operation can be performed to the shift position of “P”.

On the other hand, when the operating knob 22 is selected to the "N" shift position, the solenoid 130 is de-energized when the vehicle is running at a medium speed or higher. The plunger 132 is pulled out by the urging force of the spring 136, and the lever 1
The lock plate 108 connected via 14 moves closer to the detent pin 104, and the detent pin 104 fits into the engagement groove 110 as shown in FIG. Thereby, the shaft 52 is prevented from moving in the axial direction, and the pin 54 is located at the end of the first groove 48 of the fitting groove 46 and is connected to the operating knob 22 (holder 24).
Also, axial movement is prevented. Accordingly, a shift lock state (a so-called R inhibit) in which the movement of the operation knob 22 from the “N” shift position to the “R” shift position and the “P” shift position is prevented. This shift lock state is continued as long as the vehicle speed does not fall below a predetermined vehicle speed. In this case, since the pin 54 can move in the fitting groove 46, the operation knob 22 can move from the “N” shift position to the “D” shift position direction.

When the vehicle is in a running state at a middle speed or lower or in a stopped state, the solenoid 130 is energized and the shift lock is released.

When the operation knob 22 is selected to the shift position of "2" and the shift lock is released when the vehicle is running at a middle speed or less or stopped and the shift lock is released. Since the shaft 52 can be moved in the axial direction and the shaft 52 is biased in the direction of the operation knob 22 by the spring 102, the pin 54 that has entered the first groove 48 attempts to enter the direction of the second groove 50. I do. However, the first groove 48 and the second groove 5
0, the inclined surface 49 is formed. By rotating the operation knob 22 from the “2” shift position,
The pin 54 easily moves to the first groove 48 while sliding on the inclined surface 49, and the pin 54 can be reliably selected and operated to the "D" shift position.

When the shift lock at the "N" shift position is released and the operation knob 22 is selected at the "R" shift position, it is out of the shift lock target and the operation knob 22 (shaft 52) is not locked. Movement is possible.

On the other hand, when the operation knob 22 is selected to the "N" shift position and the shift lock state is established, as described above, the rotation of the operation knob 22, that is, the "N" shift position changes to "D". Can be moved in the direction of the shift position, but when the shift position is changed from the “N” shift position to the “2” shift position, the lock plate 108 is still moved.
The detent pin 104 is locked by the engaging groove 110, and the movement of the shaft 52 is prevented.

However, here, the pin 54 for connecting the operation knob 22 (holder 24) to the shaft 52 is inserted into the fitting groove 46 formed in a crank shape by the first groove 48 and the second groove 50. From the first groove 48 to the second groove 50
Because the pin 54 can move relatively to
As shown in FIG. 7, the pin 5 is moved from the first groove 48 to the second groove 50.
The holder 24 (operation knob 2)
2) can be operated and moved from the “2” shift position to the “L” shift position. That is, even if the shaft 52 is prevented from moving in the axial direction by the lock plate 108 at the shift position of “2”, the relative movement of the pin 54 from the first groove 48 to the second groove 50 causes the operation knob 22 (holder). 24) The shift operation can be performed. For this reason, even if the operation direction of the operation knob 22 when selecting the “L” shift position is the same axial direction as when selecting the “P” shift position, the shaft 52 does not move, so the P switch 148 Does not engage the detent pin 104, and the P switch 148 does not needlessly operate.

Further, in the shift operating device 10, the shift lock state can be released by manual operation regardless of the shift lock state due to the operation of the solenoid 130.

That is, since the release lever 140 is arranged near the lever 114 and the release knob 146 is provided correspondingly, the release knob 140 is pressed to move the lever 114 through the release lever 140. The lock plate 108 is forcibly rotated, whereby the lock plate 108 can be separated from the detent pin 104 (the elongated hole 106) (mechanical shift lock release).
Therefore, even when the power supply is cut off, the shaft 52 can be moved in the axial direction, that is, the operation knob 22 can be operated, which is also effective for maintenance work and the like.

By operating the solenoid 130 regardless of the shift position of the operation knob 22, the lock plate 108 is naturally connected to the detent pin 104 (elongated hole 10).
6) (electrical shift lock release).

As described above, in the shift lever device 10, not only can the shift position selected by the shift operation of the operation knob 22 be detected by the switch unit 80 (and the P switch 148), but also the automatic transmission can be shifted. "
The lock plate 1 is activated by operating the solenoids 130 at specific shift positions such as “R”, “N”, “D”, “2”, and “L” according to the individually set vehicle speed.
08, the shaft 52 can be restrained to prevent the shift operation of the operation knob 22, and the single solenoid 13
0 and the simple structure of the lock plate 108,
The shift lock state can be established under predetermined conditions. In addition, this shift lock state is the release knob 1
It can be arbitrarily released by the manual operation of 46.

[0073]

As described above, the shift operation device for an automatic transmission according to the present invention can electrically detect a shift position selected by a shift operation and shift the automatic transmission based on this detection signal. In addition, the simple structure has an excellent effect that the shift lock state can be reliably achieved under predetermined conditions.

[Brief description of the drawings]

FIG. 1 is a front view of a shift operation device of an automatic transmission according to the present invention.

FIG. 2 is a left side view of the shift operating device of the automatic transmission according to the present invention.

FIG. 3 is a cross-sectional view of the shift operation device taken along line 3-3 in FIG. 1;

FIG. 4 is a cross-sectional view of the shift operation device taken along line 4-4 in FIG. 2;

FIG. 5 is an exploded perspective view of a shift operating device of the automatic transmission according to the present invention.

FIG. 6 is an exploded perspective view of a shift operating device of the automatic transmission according to the present invention.

FIG. 7 shows a pin of a shift operation device at each shift position;
It is the schematic which shows the correspondence of an insertion groove, a lock plate, a detent pin, etc.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Shift operation device 20 Operation part 22 Operation knob 24 Holder 52 Shaft 62 Rotor 80 Switch part 100 Shift lock part 104 Detent pin 106 Slot 108 Lock plate 110 Engagement groove 114 Lever 130 Solenoid 140 Release lever 146 Release knob

──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Kazuyoshi Ishiguro No. 1, Noida, Toyota, Oguchi-cho, Niwa-gun, Aichi Prefecture Inside Tokai Rika Electric Works, Ltd. (72) Inventor Ryuji Ibaraki 1, Toyota-cho, Toyota-shi, Aichi Prefecture Toyota (72) Inventor Norihiro Kitamura 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation (72) Inventor Yoji Terazono 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation (72) Inventor Katsuyuki Ono 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Motor Corporation (56) References Japanese Utility Model 33-1253 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B60K 20/02 B60K 20/04 F16H 59/08

Claims (1)

(57) [Claims] 1. A shift operating device for use in an automatic transmission having a P shift range, an R shift range, an N shift range, and one or more D shift ranges, wherein a shift operation device is provided on an axis of a substantially cylindrical main body. On the other hand, it is provided so as to be rotatable and axially movable, and is turned to a shift position provided corresponding to the N shift range and the D shift range, and is selected and operated, and corresponds to the P shift range and the R shift range. An operation knob that is axially moved to a shift position provided for selection operation, a switch unit that detects the selected shift position of the operation knob, and the operation knob that is disposed along an axis of the main body and A shaft interlocked with the movement of the operation knob in the axial direction; and a shaft arranged to be engaged with and disengaged from the shaft. A lock plate for blocking axial movement, is connected to the lock plate, the operation knob is the P
When the shift range is selected, the lock plate is brought into a stopped state by bringing the lock plate into engagement with the shaft, and is actuated by a predetermined brake operation to detach the lock plate from the shaft, and When the operation knob is selected to the N shift range, the operation knob operates at a predetermined vehicle speed or less set in accordance with the N shift range to release the lock plate from the shaft and stop at a predetermined vehicle speed or more. A solenoid that is in a state where the lock plate is engaged with the shaft, and a release knob that is connected to the lock plate and that can release the lock plate from the shaft regardless of the operation of the solenoid. A shift operation device for an automatic transmission, comprising: