JPS6145093B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transmission drive device for a vehicle,
In particular, the present invention relates to a transmission drive device for a vehicle suitable for use in an automatic transmission.

Recently, automatic vehicles have been developed and put into practical use in automobiles, especially passenger cars. In such an automatic vehicle, for example, when the shift lever is shifted from the N range (neutral position) to the D range (drive position) in order to start the vehicle, the clutch is automatically turned off, and then the transmission is turned off. 1st gear is selected. When the accelerator pedal is depressed from this state, the amount of depression of the accelerator pedal is detected, the clutch is automatically turned on, and the vehicle starts moving. Furthermore, in such an automatic vehicle, gear shifting operations are performed automatically while the vehicle is running. That is, the electronic control unit built into the automatic vehicle stores automatic shift line patterns for the D range, first range, and second range of the shift lever. If an operating point enters each of the first, second, and third speed regions defined by the automatic shift line pattern from another region, this is detected and a shift operation is automatically performed. The automatic transmission for this type of automatic vehicle is a combination of an automatic clutch and an automatic transmission, and various types have been developed, but some are a combination of a torque converter and a planetary gear type transmission. are mainly used. However, planetary gear type transmissions have a complicated structure and require a lot of effort to assemble. Moreover, the structure of this planetary gear type transmission is different from the conventional manually operated parallel shaft gear type transmission.
The existing production line cannot be used, and a new production line must be used. Therefore, it has the disadvantage that it is more expensive than a parallel shaft gear type transmission.
There are also some parallel shaft gear type transmissions that are controlled by a fluid control system, but these have the drawbacks of being complicated and expensive in structure and not being easy to control.

Therefore, an object of the present invention is to provide a drive device for a transmission that can use a widely used parallel shaft gear type transmission in an automatic transmission, has a simple structure, is easy to control, and has high stopping accuracy. It is in.

Hereinafter, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a configuration diagram of an embodiment of the present invention, FIG. 2 is a configuration diagram of a parallel shaft gear type transmission used in the present invention, FIGS. 3 and 4 are perspective views of essential parts of the configuration shown in FIG. FIG. 5 is an explanatory diagram of the operation of the present invention.

In FIG. 1, reference numerals 1 and 1' indicate DC motors, which have a worm gear 11 at the tip of a shaft 10 surrounded by an armature 12, as shown in FIG. Gear boxes 2 and 2' are disposed adjacent to the motors 1 and 1', respectively; A worm gear that is supported and meshes with the worm 11, and has a movable contact 23 on the wheel surface,
The movable contact 23 is connected to the ground potential G by a fixed contact 24, while a neutral contact 27, a right position contact 29, and a left position contact are provided on the wall surface of the box 2 corresponding to the fixed position according to the rotation angle of the worm gear 21. A contact 28, a right plate contact 25, and a left plate contact 26 are provided. Returning to FIG. 1, 3 and 3' are arm mechanisms, and as shown in FIG.
The tip of the arm 31 (ball joint 3
2) performs circular arc motion. Reference numerals 4 and 4' designate connecting rods, and as shown in FIG. Pin 4
A U-shaped pin support 42 is provided. As shown in FIG. 1c, the coupling rod 4' has an engagement hole 41' that engages with the ball joint 32' of the arm mechanism 3' at one end, and a ball joint of the shift lever 6 at the other end. Engagement hole 4 that engages with 62
2', and a relay rod 5 is provided in the middle of the rod 4'. Incidentally, the rod 4' and the relay rod 5 may be integrated. As shown in the perspective view of FIG. 4, the relay rod 5 is provided with a pair of cylindrical L-shaped slide rods 52 and 53 in a tube 50, and springs are attached to the L-shaped engaging portions of the slide rods 52 and 53. 54 is provided to apply a force such that the slide rods 52, 53 repel each other. A rod 4' is screwed to the constricted portion of each slide rod 52, 53. In addition,
Snap rings 51 and 55 are attached to the slide rods 52 and 53, respectively, and the tube 5
This prevents 0 from missing.

Returning to FIG. 1, 6 is a shift lever, 7 is a transmission control box, and 8 is a select lever, the details of which are shown in FIG. 2. Figure 2 shows the configuration of the transmission mechanism of a well-known parallel shaft gear type transmission, in which the shift lever 6 has a ball joint 62 at its tip.
The other end is connected to the shift lever shaft 70. An internal lever 71 is attached to the shift lever shaft 70, and the internal lever 71 is connected to shift blocks 72, 7, which will be described later.
3,74. On the other hand, select lever 8
The middle part is attached to the rotating shaft 82, and the tip part 83 has the shift lever shaft 7 as shown in FIG. 2b.
A pin 84 is provided which engages with the groove 71 of 0. Further, shift blocks 72, 73, 74 that engage with the internal lever 71 are fixed to the three shift rods 75, 76, 77, respectively, and a shift fork 78 that engages with a clutch sleeve (not shown) is provided. . Other shift rods 7
The same applies to 5 and 76. In the shift pattern shown in FIG. 2c, the horizontal direction in the figure is the shift direction, the vertical direction is the selection direction, and the center is the neutral position "N". For example, to change gears to 1st gear position "1", it is only necessary to move 1 in the select L direction and 1 shift in the shift L direction, so the select lever 81 is rotated to the left and the shift lever 61 is rotated to the left. When the select lever 81 is moved, the pin 84 provided at the end 83 of the select lever 81 moves the shift lever shaft 70 in the axial direction, causing the internal lever 71 to engage with the shift block 74. The rotation of the shift lever 61 causes the shift lever shaft 70 to rotate, and therefore the internal lever 71
The shift block 74, which is engaged with the internal lever 71, moves in the axial direction of the shift rod 77. Therefore, the shift rod 77 is also moved, the shift fork 78 is moved, and the clutch sleeve (not shown) is moved to perform gear change.

In the transmission configured in this manner, 1 is a select drive motor for driving the select lever 8, and 1' is a shift drive motor for driving the shift lever 6. To explain the operation of the transmission with this configuration, when the transmission gear is determined according to the shift pattern as shown in Fig. 2c, a rotation command is issued depending on whether the selection direction is right or left, and the selection drive motor 1 rotates forward or backward. As a result, the worm gear 21 rotates via the worm gear 11 of the motor shaft 10, causing the arm 31 to move in an arc, and the ball joint 32 causes the rod 4 to move in a straight line. The arm 31 and the rod 4 constitute a rotational-linear motion conversion mechanism. Due to the straight movement of rod 4,
The select lever 81 rotates, and the select lever 8
1 pin 84 moves shift lever shaft 70 axially to engage internal lever 71 with a selected one of shift blocks 72, 73, and 74. On the other hand, similarly, a rotation command is generated depending on whether the shift direction is right or left, and the shift drive motor 1' rotates forward or backward. As a result, the worm gear 21' rotates through the worm 11' of the motor shaft 10', causing the arm 31' to move in an arc, and the ball joint 32' causes the rod 4' to move in a straight line. The arm 31' and the rod 4' constitute a rotational-linear motion conversion mechanism. Since the relay rod 5 is interposed in the rod 4', the linear force of the rod 4' is transmitted to the shift lever 6 via the spring 54 of the relay rod 5. Since this spring 54 is a buffer spring that acts in both directions, the load transmitted to the shift lever 6 side is regulated within a certain range, and unreasonable force is not applied to the clutch sleeve moved by the shift fork 78. This prevents the shift drive motor 1' from locking and burning due to the load of the shift lever 6.
Further, the relay rod 5 may be provided on the selection side rod 4. When the shift lever 61 rotates, the internal lever 71 rotates and the shift block 7
Since any one of the blocks 2, 73, and 74 moves in the axial direction of the shift rod, the shift arm is moved and the desired clutch sleeve is moved to complete the shift operation.

Now, in the rotation of the aforementioned motors 1 and 1',
It is necessary to control the rotation angle according to the required amount of rotation of each lever 6, 8. This is done by the contact mechanism shown in Figure 3b. This operation will be explained in conjunction with the explanatory diagram of FIG. The movable contact 23 has neutral, left, and right position contacts 27 and 2.
8 and 29, a left plate track 23b for the left plate contact 26, a right plate track 23c for the right plate contact 25, and a ground track 23d for the ground contact 24.
3a is one island, plate tracks 23b, 23
C has two islands, and the grounding track 23d has a single island-shaped conductive pattern spanning half the circumference, and these conductive patterns are connected together and are always grounded by a grounding contact 24. Figure 5a
are the fixed contacts 24, 25, 26, 27, 28, 29 when the select arm 8 is in the neutral state.
and the positional relationship of the movable contact 23, and also shows a non-driving state in which the motor 1 is not driven. That is, both terminals of motor 1 are grounded by relays RL1 and RL2. At this time, only the neutral contact 27 is on the conductive pattern of the movable contact 23, so the neutral contact 27 is grounded and the other fixed contacts 2
5, 26, 28, and 29 are not grounded. When a clockwise rotation command is given here, relay RL2
is turned on and the contact on the relay RL2 side of the motor 1 is connected to the power supply E, so the motor 1 rotates, the worm gear 21 rotates clockwise, and only the light position contact 29 as shown in FIG. 5b is connected to the movable contact 23. When it is on the conductive pattern, ie, only the write position contact 29 is grounded, it stops, and FIG. 5b shows the final position of clockwise rotation. Conversely, when a counterclockwise rotation command is given, relay RL1 is turned on and the relay RL1 side contact of motor 1 is connected to power supply E, so motor 1 rotates in the reverse direction and worm gear 21 rotates to the left.
As shown in FIG. 5c, the left position contact 28 stops at a position where only the left position contact 28 is on the conductive pattern of the movable contact 23, that is, only the left position contact 28 is grounded, and FIG. 5c shows the final position of left rotation. Indicates the status of

A drive circuit for such drive will be explained with reference to FIG. In the figure, LS is a switch for counterclockwise rotation command, NS is a switch for neutral position command,
RS indicates a switch for commanding clockwise rotation; 90,
Reference numerals 91 and 92 indicate command transmission circuits having the same configuration, and reference numerals 94 and 95 indicate relay drive circuits having the same configuration. 96 is a neutral holding circuit, 97
is a reset circuit. This operation will be explained based on the waveform diagram in FIG. It is assumed that the rotation is made from the right rotation position shown in FIG. 5b to the left rotation position shown in FIG. 5c. (See Figure 7a) When the counterclockwise rotation command switch LS is turned on, the transistor TR1 of the transmission circuit 90 is turned on, and the relay RL3 is turned on (attracted). Therefore, the contact _rl3 of relay RL3 switches as shown by the dotted line.

Therefore, voltage Ve applied from switch LS is applied to one end of relay RL1 via contact _rl3 of relay RL3.

On the other hand, the voltage Ve is also applied to the relay drive circuit 94 through the contact rl ₃ , and the transistor TR2 is turned on after a time delay determined by the time constant circuit of the resistors R ₁ and C ₁ has elapsed. Therefore, transistor TR2
As shown in the figure, the collector of transistor TR3, that is, the base of transistor _TR3 , is at a high level after rl3 is turned on until transistor TR2 is turned on. During this period, transistor TR3 is turned on, and relay RL is turned on.
1 is turned on, the wires are connected as shown in FIG. 5c, and the motor 1 rotates to the left.

When the motor 1 rotates, the worm gear 21,
That is, the movable contact also rotates, and therefore rotates counterclockwise from the state shown in FIG.
The potential of becomes the ground potential. Until the potential of this LG26 becomes the ground potential, the above-mentioned transistor
Since TR3 needs to be kept on, the time delay period of the time constant circuit described above is required until LG26 comes into contact with the conductive plate. By grounding LG26, the other end of relay RL1 is grounded, so even if transistor TR3 is turned off, current flows in the order of relay RL1 - LG26 - movable contact 23 - ground contact 24, so relay RL1 is driven. Leave it alone. Therefore, the motor 1 continues to rotate.

When the motor 1 rotates and approaches the neutral position shown in FIG.
Before coming off, the neutral contact (NP) 27 contacts the conductive pattern. Therefore, the ground potential of NP27 is transmitted to transistor TR6 via diode _D1 of holding circuit 96. This allows the contacts rl ₃ − diode D ₂ − transistor
Current flows through the route TR6 base - transistor TR6 emitter - diode D ₁ - NP27,
Turn on transistor TR6. By turning on transistor TR6, relay RL1 connects diode D ₃ , transistor TR6, diode D ₁ , NP
27 routes are secured.

Even if motor 1 rotates and LG26 is removed from the conductive pattern, the route of rl ₃ - RL1 - diode D ₃ - transistor TR6 - diode D ₁ - NP27 is maintained, so relay RL1 continues to be driven and motor 1 continues to rotate. here
The time during which NP27 is in contact with the conductive pattern (i.e. the width of the island of position track 23a) is LG2.
6 is greater than the time during which the conductive pattern is not in contact (ie, the width between the islands of the left plate track 23b).

Motor 1 rotates further and neutral contact 2
Even if 7 is removed from the conductive pattern or the route of is released, the left plate contact LG26 is connected to the conductive pattern, so the route of relay RL1-LG26-movable contact 23-ground contact 2
Route 4 is restored again, relay RL1 continues to be driven, and motor 1 continues to rotate.

As the motor 1 rotates further and approaches the left rotation position of FIG. 5c, the left position contact (LP) 28 engages the conductive pattern before the LG 26 is removed from the conductive pattern, and LP 28 is grounded.
As a result, the diode of the reset circuit 97
The emitter of transistor TR8 is also grounded via _D4 . On the other hand, the base current of transistor TR8 is supplied through the route of switch LS - resistor R ₂ - resistor R ₃ - base of transistor TR8, but when motor 1 is rotating, voltage E applied to motor 1 is relay RL1 or relay RL
Since the transistor TR10 is turned on through the diode _D5 or _D6 , the current flowing to the base of the transistor TR8 flows to the transistor TR10, and the transistor TR8 is turned off.

When the motor 1 further rotates and the LG 26 comes off the conductive pattern, the contact of the LG 26 is released and the corresponding route is also released, so the relay RL1 returns and the motor 1 stops. This position is shown in Figure 5c.

On the other hand, as relay RL1 returns,
Voltage E is no longer supplied to the base of transistor TR10, and transistor TR10 is turned off. As a result, current flows into the base of the transistor TR8 via the resistors R ₂ and R ₃ .
Transistor TR8 turns on. The collector of the transistor TR8 is connected to the resistor R ₄ of the transmission circuit 90,
Since it is connected to the midpoint of _R5 , transmission circuit 9
0, bypasses the base current of transistor TR1, turns off transistor TR1, and turns off the relay.
Restore RL3.

In the manner described above, the rotation from the right position in FIG. 5b to the left position in FIG. 5c is completed.

Conversely, for rotation from the left position in FIG. 5c to the right position in FIG. 5b, the right rotation command switch RS is turned on and the same operation is performed. That is, 'as mentioned above,
Similarly, turn on relay RL5 of transmission circuit 92,
Furthermore, transistor TR4 of relay drive circuit 95 is turned on, relay RL2 is turned on, and motor 1 is rotated clockwise. 'Next, the light plate (RG) 25 is grounded and the relay RL2-RG
25-movable contact 23-ground contact 24 route, relay RL2 is kept on, and motor 1 continues to rotate. 'Next, by the operation of the neutral contact (NP) 27 in the same way as , the contact rl ₅ - diode
D ₇ - Transistor TR6 - Diode D ₁ - NP27
Transistor TR6 turns on in the route of
Relay RL2 is kept on through the route RL2-diode _D8 -transistor TR6-diode _D1 -NP27. 'Relay RL2 again like next
-The holding route of RG25 is restored, and relay RL2 continues to be on. ’, the write position contact (RP) 29 is grounded, but the transistor TR9
is off, and RG25 is removed from the conductive pattern in the same way as before, and the grounding of RG25 is released, so that relay RL2 is restored and motor 1 is stopped, resulting in the position shown in FIG. 5b. 'Further, similarly to the above, the transistor TR10 is turned off, the transistor TR9 is turned on, the transistor of the transmission circuit 92 is turned off, and the relay RL5 is reset. In this way, the rotation from the left position in FIG. 5c to the right position in FIG. 5b is completed.

Next, the rotation from the right rotation position shown in FIG. 5b to the neutral position shown in FIG.
(see figure b). In this case, the rotation is counterclockwise, so turn on the counterclockwise rotation command switch LS and the neutral switch NS. When the switch LS is turned on, the above-mentioned operations are performed. On the other hand, since switch NS is on, relay RL is
4 is turned on, and transistor TR5 is turned on. For this reason, the transistor TR6 is always off, and the holding route of is not established. Therefore, without performing the following operations described above, the relay RL1 is grounded by releasing the grounding of LG26 at the neutral position shown in Figure 5a.
returns and motor 1 stops. Since NP27 is grounded in the neutral position of FIG. 5a, the emitter of transistor TR7 is grounded via diode _D10 . Here, switch NS is on, so transistor TR7 is on,
The emitter of transistor TR8 is also grounded. When relay RL1 returns, transistor TR10 turns off, transistor TR8 turns on, turns off transistor TR1 of transfer circuit 90, and returns relay RL3.

Conversely, from the neutral position in Figure 5a to Figure 5c
Since the rotation to the counterclockwise position requires counterclockwise rotation, turn on the counterclockwise rotation command switch LS and perform the above-mentioned ~
Perform the following actions. Since the next operation does not occur since it starts from the neutral position, it jumps to the operation , executes the operation , and stops at the counterclockwise rotation position.

To summarize the above, the transmission circuit 90 or 91 is operated according to the instruction from the left rotation or right rotation command switch LS or RS, and the relay RL1 or RL2 is set to rl ₃ -RL1-TR.
3 or rl _{5 -} Turns on at the first route of RL2 - TR4, rotates motor 1, and rotates motor 2 to turn on LG2.
6 or RG25 is grounded, rl ₃ −RL1−LG
26 or the second route of _RL5 -RL2-RG25, the relay RL1 or RL2 is kept on and the motor 1 is rotated. Additionally, for rotation across the neutral position, rl ₃ −RL1−TR at grounding of NP27.
6-NP27 or _rl5 -RL2-TR6-NP27, the relay RL1 or RL2 is kept on, and then the second route is returned to rotate the motor 1 further. Then, the second route is canceled by canceling the grounding of LG26 or RG25, and the motor 1 is stopped. At the same time, the reset circuit 97 is operated by grounding LP28 or RP29, and the relay RL3 or RL5 of the transmission circuit 90 or 92 is reset. To stop at the neutral position, contact NS is turned on, relay RL4 is operated, and operation of holding circuit 96 is prohibited to prevent the formation of the third route. Therefore, when LG26 or RG25 is grounded, the motor 1 stops at the neutral position, and when NP27 is grounded, transistor TR7 is turned on, transistor TR8 or TR9 is turned on, and transmission circuit 90 or 9 is turned on.
This is to restore the second relay RL3 or RL5.

In the above explanation, the motor 1 of the selector lever 8
The same applies to the motor 1' of the shift lever 6. However, the left and right position contacts 28' of the motor 1' of the shift lever 6,
If 29' is provided at a wide angle position of 90 degrees or more (preferably 120 degrees) with respect to the neutral position 27', in the final position, the shift lever 6 from the motor 1
The load on the clutch sleeve becomes zero, and there is no need to apply extra force to the clutch sleeve after gear engagement.

As explained above, according to the present invention, the shift lever and select lever of the transmission are driven by a motor via a rod, which not only simplifies the configuration, but also makes control easier, and also provides an inexpensive parallel shaft gear type transmission. A mechanism can be used. Furthermore, according to the present invention, a movable contact is provided on the gear for driving the motor,
In addition, a control plate contact is provided to operate the right and left drive circuits to drive and control the motor, making it possible to accurately stop and position the motor.
It also has an excellent practical effect of not requiring a complicated detection circuit.

Although the present invention has been explained using one example, the present invention is not limited to this example, and various modifications can be made within the scope of the gist of the present invention, and these are not excluded from the scope of the present invention. do not have.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of an embodiment of the present invention, FIG. 2 is an explanatory diagram of a transmission mechanism of a parallel shaft gear type transmission used in the present invention, and FIG. 3 is a configuration diagram of main parts of a motor of the embodiment shown in FIG. 1. , FIG. 4 is a configuration diagram of the relay rod of the embodiment shown in FIG. 1, FIG. 5 is an explanatory diagram of the operation of the present invention, FIG. 6 is a circuit diagram of an embodiment of the present invention, and FIG. 7 is a waveform of each part of FIG. 6. Show the diagram. In the figure, 1, 1'... motor, 2, 2'... gear box, 3, 3'... arm mechanism, 4, 4'... rod, 5... relay rod, 6... shift lever,
8... Select lever, 21, 21'... Worm gear, 23... Movable contact, 25, 26... Plate contact, 27... Neutral contact, 28, 2
9...Fixed position contact, 54...Buffer spring,
71...Internal lever, 72, 73, 74
...Shift block, 75, 76, 77...Shift rod, 78...Shift arm, 9...Drive circuit, 90,91,92...Transmission circuit, 94,95
...Relay drive circuit, 96...Holding circuit, 97...
...Reset circuit.

Claims (1)

[Scope of Claims] 1. A transmission drive device in which a rod is provided on each of a shift lever and a select lever that drive an internal lever of a transmission, and the rod is driven by a gear rotated by a motor. A movable contact is provided on the gear, a pair of plate fixed contacts contacting the movable contact, and a first plate contact that is connected to the one plate contact and rotates the motor clockwise in response to a clockwise rotation command. A second drive circuit is provided which is connected to the drive circuit and the other plate contact and rotates the motor in the left direction in response to a counterclockwise rotation command, and controls the drive of the motor in accordance with the output of the plate contact. Characteristic transmission drive device. 2. The transmission according to claim 1, wherein the movable contact is comprised of a conductive pattern, and the drive circuit drives the motor while the plate contact is in contact with the movable contact. Drive device. 3. A neutral position of the gear is set between a rightward rotation position and a leftward rotation position, and in the neutral position of the gear, the contact between the plate contact and the movable contact is released, and a separately provided neutral contact is set to the neutral position. configuring the conductive pattern to contact the movable contact at a position;
3. The transmission drive device according to claim 2, further comprising a holding circuit that holds the rotation of the motor by contact between the neutral contact and the movable contact in the neutral position. 4. The transmission drive device according to claim 3, further comprising neutral command generating means for prohibiting holding of the holding circuit. 5. Claim 2, further comprising a right-position fixed contact and a left-position fixed contact that contact the movable contact, and a reset circuit that resets the drive circuit with the output of the fixed contact. or third
The transmission drive device according to item 1 or 4.