JPS58134256A - Actuator for speed change gear - Google Patents

Abstract

PURPOSE:To obtain an actuator for a speed change gear having simple structure while easily controllable, where a parallel shaft gear type speed change gear can be employed in an automatic speed change gear. CONSTITUTION:The rotation of first motor 1 is converted to the rolling of an arm 3 by means of a gear box 2, to advance straight a rod 4 thus to operate a lever 8. While the rotation of second motor 1' is converted to the rolling of an arm 3' by means of the gear box 2 to advance straight a rod 4' thus to operate a shaft lever 6. A repeating rod 5 equipped with a buffer spring is arranged in the way of the rod 4' to smooth the shift.

Description

DETAILED DESCRIPTION OF THE INVENTION Takaaki Jin O. relates to a transmission drive system for a vehicle, and particularly to a transmission drive system for a vehicle suitable for use in an automatic transmission.
do.

Recently, automatic vehicles have been introduced and put into practical use in automobiles, especially passenger cars. In such an automatic F''-r tick 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 first gear of the transmission is selected.

When the accelerator pedal is depressed from this state, the amount of depression of the accelerator pedal O is detected, the clutch is automatically turned on, and the vehicle starts.

Furthermore, in automatic vehicles, gear shifting operations are performed automatically while the vehicle is running. That is, the electronic control device built into the automatic vehicle stores the automatic shift line patterns for the D range, 1st lunge, 2nd range, and K of the shift lever, respectively. And, 1 block divided by the automatic transmission line pattern! If an operating point enters each of the blocking and S suitable areas from the uncontrolled area, this will be detected and the gear shifting operation will be performed automatically. This Il automatic car 01kW II transmission gear is equipped with an automatic clutch and an automatic transmission OIIM.・In view of the gear type transmission, the main thing is the value Mil.
It is. However, planetary gear type transmissions have a complicated structure and require a lot of effort to assemble. Since the structure is different from that of a conventional transmission, the conventional 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. 119. There are some methods in which a parallel shaft gear type transmission is controlled by a fluid control system, but this has the disadvantage that the structure is complicated and expensive, and the control is not elegant.

Therefore, an object of the present invention is to provide an actuator for a transmission that can be used in an automatic transmission using a widely used parallel shaft gear type transmission, has a simple structure, and is easy to control.

Hereinafter, a detailed explanation will be given according to Figure i1 of this paper.

No. 1g is a block diagram of an example of the present invention; Fig. 2 is a block diagram of the parallel shaft gear type transmission used in the present invention 11; 1XIL#I4
The figure is a perspective view of the main part of the configuration shown in FIG. 1-1, and FIG. 5 is a detailed explanatory view of the present invention.

In Fig. 1, 1.1' is a DC motor, and as shown in Fig.
1. 2 and 2 are gear boxes disposed adjacent to the motors 1 and 1, respectively, and 21 and 21' are disposed within the gear boxes 2.2 and are rotatable about the rotation shaft 22. A worm gear is pivotally supported by the worm 11 and meshes with the worm 11, and a first gear is provided on the wheel surface of the worm gear. The first movable contact 28 has a second movable contact 28 , 25 , and a fixed contact 24 fixed to the wall surface of the box 2 is supplied with a voltage VB from an electric power source E. The movable contact 2B of 1s2 has
It is connected to the ground potential G, and on the other hand, a two-earl contact 26, a right contact 25, and a left contact 27 are provided on the wall surface of the box 2 at fixed positions corresponding to the rotation angle of the worm gear 210. Returning to Fig. 1, 3.3 is an arm mechanism (as shown in Fig. 3 (1), it is connected to the rotating shaft 22 of the worm gear 21, and includes an arm 31 with a ball joint 32 attached to its tip. Tip of 31 (ball joint 3
2) performs circular arc motion. 4, 4 is a connecting rod, the first
As shown in Figure (b) K, one end of the coupling rod 4 is ML.

At the other end, a bin 46 that engages with the select lever 8 and a U-shaped bin support 42 are provided. Connecting rod 4
' has a retaining hole 41 at one end that engages with the ball joint 32 of the arm mechanism 3, and the other end has a retaining hole 41 that engages with the ball joint intro 2 of the shift lever 6, as shown in FIG. An engagement hole 42 is provided between the legs, the mouth, and the rad 4', and a relay rod 5 is provided between the legs, the opening, and the rad 4', or even if it is integrated, the relay rod 5 is connected to the IsK shown in the perspective view of FIG. 4, and inside the chain 50. A pair of cylindrical L-shaped slide rods 5.2.5
3 are provided, and a spring 54 is provided in the L-shaped retaining portion of the slide rods 52, 55, so that the slide rods 52. A force is applied such that ~53 repel each other. The end of each slide rod '52.53 (is rod 4
are screwed together. In addition, the slide rods 52, 5
Snap rings 51 and 55 are tightly attached to each of the sleeves 5 to prevent the sleeve 50 from coming off.

Returning to FIG. 1, 6 is a shift lever, 17 is a miss control box, and 8 is a select lever, the details of which are shown in FIG. As shown in FIG. 2, the shift lever 6 has a ballge intro 2 at its tip, and is connected to a shift lever shaft 70 at the other end, as in the configuration of a known parallel shaft gear type transmission. An internal lever 71 is attached to the shift lever shaft 70, and the internal lever 71 is connected to a shift block 72.75°74 which will be described later.
On the other hand, the middle part of the select lever 8 is attached to the rotating shaft 82, and the tip part 83 has a t [Fig.
A pin 84 is provided which engages the groove 71 of the shift lever shaft 70 as shown in FIG. or.

The three shift rods 75, 76, and T27 each have shift blocks 72 and 75 that engage with the internal lever 71.
．． 74 is fixed, and a shift 7 oak 78 is provided which engages with a clutch sleeve (not shown). The same applies to the other shift rods 75 and 76. l [Figure 2 (C
), the horizontal direction in the figure is the shift direction, the vertical direction is the select direction, and the center is the neutral position rNJ. For example, when changing gears to the 1st gear position "1", it is only necessary to move -1 in the select direction and 11 in the shift direction, so the select lever ~ 81
When the shift lever 61 is rotated in the negative direction, the dowel 84 provided at the end 83 of the select lever 81 is rotated.
(shift lever shirt) 70 moves in the axial direction,
The internal lever 71 is engaged with the shift block 74. The shift lever shaft 7o rotates by the shift lever 61 (D times tlh, and therefore the internal lever 7
1 also rotates, so the shift block 74iE seat a engaged with the internal lever 71 moves in the axial direction of the door 7. This ninth shift)" Rmm rad foot move, shift 7* -77,8tq*l,,,,
(, (,, ji!!l @ L lk ii. 2 care.

-,.

Move one knob to change gears.

In the nine-speed transmission having such a busy configuration, a select drive motor is used to drive the single select lever 8, and 1' is a shift drive element for driving the shift lever 6. To explain the operation of a transmission with this configuration, when a gear is determined according to a shift pattern as shown in Fig. 2 (C), a rotation command is issued depending on whether the selection direction is positive or negative. , the select drive motor 1 rotates forward or backward. For this]
The worm gear 21 rotates through the worm gear →'11 of the motor shaft 10, causing the arm 31 to move in an arc, and the ballge l
The rod 4 moves in a straight line due to the India 52. Arm 31
and rod 4 constitute a rotational-linear motion conversion mechanism. The linear motion of the rod 4 rotates the select lever 81, and the pin 84 of the select lever 81 moves the shift lever shaft 70 in the axial direction, thereby shifting the internal looper 71.
is engaged with a selected block of shift blocks 72, 73, and 74. On the other hand, similarly, a rotation command is generated corresponding to whether the shift direction is positive or negative, and the shift drive motor 1' rotates forward or backward. As a result, the worm gear 21' rotates through the worm gear 111' of the P motor shaft 10', causing the arm 51' to move in an arc, and the ballge winding 52'
1 l rod moves in a straight line. Arm 81' and rod 4' constitute a rotational-linear motion conversion mechanism. Rod 4'
Since the relay rod 5 is interposed in
will be communicated to Party B. Since this spring 54 #i is a buffer spring that acts in both directions, the load transmitted to the shift lever 6 is regulated within a certain range, and the shift fork 1
This prevents excessive force from being applied to the clutch sleeve moved by the shift lever 8, and prevents the shift drive motor 1' from collapsing and burning out due to the load pressure of the shift lever 6. Alternatively, the relay rod 5 may be provided on the selector rod 4. When the shift lever 61 rotates, the internal lever 71 rotates and the shift block 72, 75, 7
Since one of the blocks No. 4 moves in the axial direction of the shift block, the shift arm is moved and the desired clutch sleeve is moved to complete the gear shifting operation.

Now, in the rotation of the motor 1' mentioned above, it is necessary to control the rotation angle according to the required rotation amount of each lever 6.8. This is done by the contact mechanism shown in the third opening-)K. This operation will be explained with reference to the explanatory diagram of FIG.

FIG. 5(a) is an explanatory diagram of the drive of the select drive motor, and it is assumed that the shift lever 8 is now in the neutral position. VE is given, and the second movable contact 2! I has a shape extending radially from the rotating shaft 22 of the gear 21, and the second movable contact 25 is always grounded. In the aforementioned neutral position, the neutral contact 26 is in contact with the second movable contact 23. On the other hand, the right contact 25 is fixed to the right rotation side of the neutral contact 26, the left contact 27 is fixed to the left side of the neutral contact, and is provided around the second movable contact 2s. And neutral contact 26 and light contact 2,5
, the rotation angle Fi with respect to the left contact 27 is set to 90'. Here, when a clockwise rotation command is issued, as shown by the dotted line, terminal B of the light contact 25 in the controller CT and one terminal E of the motor 1 are connected by a relay (not shown), and the The other terminal C and the ground terminal are connected by a relay (not shown). Therefore, power supply E - fixed contact 24 - first movable contact 2B - light contact 25 - B terminal -
Motor 1 via the route E terminal - motor 1 - C terminal - terminal
A current flows to rotate the motor 1 in the forward direction, and the worm gear 21
Rotate it to the right. Due to this rotation, the first movable contact 2B no longer contacts the light contact 25, and when the second movable contact 23 contacts the light contact 25Kg, the light contact 25, that is, the B terminal becomes the ground potential, and the motor 1 and other Terminal E4hm has ground potential to form a root circuit.
No current flows through the motor 1, and the motor 1 stops.

At this time, the electromagnetic brake is activated by the internal back electromotive force, and the rightward rotation is thus completed, and the lever 8tj is moved in the forward direction by a certain amount.

Next, when a counterclockwise rotation command is issued, the terminal of the left contact 27 in the controller (o-ra) CT and the other terminal C of the motor 1 are connected by a relay or the like (not shown), as shown by a chain link. Also, one terminal E of the terminal 1 and a ground terminal are connected by a relay (not shown).

Therefore, power supply E - fixed contact 24 - first movable contact 22 -
Left contact 27 - Input terminal - C terminal - Motor 1 - E terminal -
Current flows through the motor 1 through the route of the D terminal, causing the motor 1 to rotate in the reverse direction and the worm teeth -21 to rotate in the left direction. Due to this rotation, the -1 left contact 27, that is, the A terminal becomes ground potential, and therefore the C terminal of the motor 1 also becomes ground potential, so that no current flows through the motor 1, and the motor 1 stops.

In this way, the rotation to the left is completed, and the select lever 8
is rotated by a certain amount in the negative direction. Rod 4 - The applied load characteristics are as shown in No. 5 Fi1 (c) @1111%2.

To return to the neutral position, connect terminal C and neutral contact terminal F, and connect motor terminal E and ground terminal.
-(b) is an explanatory diagram of the drive of the shift drive motor 1', and its operation is the same as that of the selector drive motor 1, so the explanation will be omitted. However, light contact 2! s' and the left contact 27' are at the rotation angle α with respect to the neutral contact 2-6'.
is set to a wide angle of 90 degrees or more, for example, 1206 degrees. Therefore, since the worm gear 21' rotates more than 9011 degrees in the left-right direction and stops, the load characteristics on the rod l are as shown in FIG.
Therefore, after the gears are engaged by the shift lever 4, the load becomes zero.

Therefore, no load is applied to the clutch sleeve after the gears are engaged, so the shift fork, clutch sleeve, etc. of the transmission will not be damaged or worn out.

Of course, if the front layer is not required, the rotation angle α may be set to 90° as in the case of the worm gear 21 for the sereator.

As explained above, according to the present invention, since the lever is driven using an electric motor, the structure is simple and the control is easy (no harm), and in addition to the effect of an inexpensive structure, A conversion mechanism and motor that converts motion into linear motion7
Since it is provided corresponding to the trevor and select lever,
The advantage is that the transmission can be configured using an inexpensive parallel shaft gear type transmission.Furthermore, the rod of the conversion mechanism that engages with the shift lever is equipped with a relay rod having a buffer spring. This has practical effects in that the Jiff weight can be regulated within a certain range, smooth gear shifting is possible, and motor locking can be prevented.

However, the present invention is not limited to this embodiment, and various honeycomb shapes are possible within the scope of the present invention. These are not excluded.

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram of an embodiment of the present invention, and Fig. 2111 is an explanatory diagram of a transmission mechanism of a parallel shaft gear type transmission used in the present invention;
KSE is the motor main part configuration diagram of the 1st wA actual vagina example, and the 4th vA
1 is a configuration diagram of the i-joint rod of Example □ in FIG. FIG. 5 shows an explanatory diagram of the operation of the present invention. In the figure, 1.1'...Motor, 2.2'...Gear box, 5.5'...Arm*W, 4,4'...Rod, 5...Relay rod, 6...Shift lever 18
...Select Leno (-121,21'...Worm gear, 54...Buffer spring, 71...Internal lever, 72.75.74...Shift block,
75, 76.77...Shift rod, 78...Shift arm. Patent Applicant: Isuso Jidosha Co., Ltd., Patent Attorney: Tsuji, 2 people outside the office: 1::::. Figure 2 (a) (b) (c) -J attack-

Claims (4)

[Claims] (1) In an actuator for a transmission that changes gears by operating an internal lever (by creating a shift lever and a select lever), the first
A first conversion mechanism (one end of the DO rad is coupled to the select lever, and a second
one end of a rod of a second transfer mechanism for converting rotational motion of the motor into linear motion is coupled to a wrinkle shift lever;
11111120 41111 is an attachator for transversal transverse use in which the rod of the conversion mechanism is equipped with a medium rod having a buffer spring. (2) The first and second motors have gears driven by the motor shafts, and the other ends of the rods are connected to the first and second converting mechanisms, causing rotational movement of the scissor gears. An arc
The actuator for a transmission according to claim (1), characterized in that it has an arm that converts into a knee. (3) A movable contact is provided on the gear, and a fixed contact is provided at a required rotational angular position of the gear, and the movable contact and the fixed binding stop the movement of the gear that drives the gear. Claim 1! l The actuator for a transmission described in item (2). (4) The transmission actuator assembly according to claim (2), wherein the rotation angle of the gear connected to the second motor is set to 90 degrees or more.