JP2003042290A - Transmission operating device - Google Patents

Abstract

[PROBLEMS] To provide a shift operation device including a select actuator using an electromagnetic solenoid that can obtain a predetermined thrust even when a shift lever has many select positions and a long operation stroke is required. A shift operating device having a select actuator that operates a shift lever in a select direction and a shift actuator that operates a shift lever in a shift direction, wherein the select actuator slides in a cylindrical casing in an axial direction. A control shaft equipped with the shift lever, which is rotatably and rotatably supported, and a pair of electromagnetic solenoids disposed at both ends of the casing to operate the control shaft in an axial direction which is a select direction, The shift actuator causes the control shaft to rotate in the shift direction.

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 for performing a shift operation of a transmission mounted on a vehicle.

[0002]

2. Description of the Related Art A shift operating device for performing a shift operation of a transmission includes a select actuator that operates a shift lever of a transmission mechanism in a select direction, and a shift actuator that operates the shift lever in the shift direction.
As such a select actuator and a shift actuator, a fluid pressure cylinder using a fluid pressure such as air pressure or hydraulic pressure as an operation source is generally used. Select actuators and shift actuators that use this fluid pressure cylinder require pipes that connect the fluid pressure source and each actuator, and also need to provide an electromagnetic switching valve for switching the flow path of the working fluid. However, there is a problem that a space for arranging them is required and the weight of the entire device becomes heavy. Further, in recent years, as a shift operation device for a transmission mounted on a vehicle that does not have a compressed air source or a hydraulic pressure source, a select actuator and a shift actuator configured by an electric motor have been proposed. Select actuators and shift actuators configured by electric motors do not require piping or electromagnetic switching valves connected to a fluid pressure source unlike actuators using fluid pressure cylinders, so the entire device is compact and lightweight. be able to.

[0003]

An actuator using an electric motor requires a speed reduction mechanism to obtain a predetermined operating force. As the speed reducing mechanism, one using a ball screw mechanism and one using a gear mechanism have been proposed. An actuator using the ball screw mechanism and the gear mechanism is not always satisfactory in durability of the ball screw mechanism and the gear mechanism, durability of the electric motor, and operating speed.

The applicant of the present application filed for a gear shift operating device using an electromagnetic solenoid as a drive source of a select actuator and a shift actuator which can operate a shift lever in a shift direction and a select direction without using a reduction mechanism or the like. Proposed as 2001-183470.
Therefore, in the select actuator, it is necessary to surely position the shift lever at a plurality of select positions, which requires a considerably long operation stroke. On the other hand, the thrust of the electromagnetic solenoid is inversely proportional to the distance between the fixed iron core and the movable iron core,
As this distance decreases, it increases quadratically,
If the distance between the fixed core and the movable core is long, a large thrust cannot be obtained. That is, when an electromagnetic solenoid is used as a drive source of a select actuator that requires a considerably long operation stroke, the thrust generated at a position where the distance between the fixed iron core and the movable iron core is long is small. Therefore, in order to obtain a predetermined thrust at a position where the distance between the fixed iron core and the movable iron core is long, it is necessary to use a large capacity electromagnetic solenoid in order to increase the electric power supplied to the electromagnetic solenoid.

The present invention has been made in view of the above facts, and its main technical problem is to provide an electromagnetic solenoid capable of obtaining a predetermined thrust even when the shift lever has many select positions and a long operation stroke is required. An object of the present invention is to provide a gear shift operation device including the select actuator used.

[0006]

According to the present invention, in order to solve the above technical problems, a select actuator for operating a shift lever in a select direction and a shift actuator for operating the shift lever in a shift direction are provided. In the gear shift operation device, the select actuator includes a tubular casing, a control shaft that is axially slidably and rotatably supported in the casing and has the shift lever mounted thereon, and both ends of the casing. A shift operation, comprising: a pair of electromagnetic solenoids, which are arranged to operate the control shaft in an axial direction which is a select direction, and the shift actuator rotates the control shaft in a shift direction. A device is provided.

The select actuator is equipped with a select position restricting mechanism for restricting a plurality of operating positions of the shift lever in accordance with the thrust generated corresponding to the amount of electric power supplied to the electromagnetic coils of the pair of electromagnetic solenoids. Is desirable.

The shift actuator includes an operating lever mounted on the control shaft, and a pair of electromagnetic solenoids arranged so as to face the operating lever and rotating the control shaft in respective shift directions via the operating lever. It has and.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS In the following, a more detailed description will be given with reference to the accompanying drawings, which show preferred embodiments of a gear shift operating device constructed according to the present invention.

FIG. 1 is a sectional view showing an embodiment of a shift operating device constructed according to the present invention, and FIG. 2 is A in FIG.
-A line sectional view, FIG. 3 is a BB line sectional view in FIG. The gear shift operating device 2 in the illustrated embodiment includes a select actuator 3 and a shift actuator 7. The select actuator 3 in the illustrated embodiment includes two casings 31a and 31b formed in a cylindrical shape and connected to each other. Both ends of the left casing 31a are open, and an opening 311a is formed in the lower part of the central portion. Both ends of the right casing 31b are open, and the lower portion of the shift actuator mounting portion 311b is formed so as to project downward.
Is equipped with. This shift actuator mounting portion 311
b is disposed below one side of the right casing 31b laterally (right in FIGS. 1 and 2), and an opening 312b is formed in a direction perpendicular to the axial direction of the casing. In addition, the shift actuator mounting portion 311b
A space 313b that communicates the opening 312b with the inside of the casing 31b is provided in the.

A control shaft 32 is provided in each of the two casings 31a and 31b constructed as described above. The control shaft 32 includes bearing bushes 331, 332 made of synthetic resin having good slidability,
It is supported by 333 so as to be slidable and rotatable in the axial direction. An external tooth spline 321 is formed on the outer peripheral surface of the control shaft 32. A shift lever 34 is attached to the control shaft 32 configured as described above. This shift lever 34
Is composed of a tubular mounting portion 341 and a lever portion 342 formed so as to radially project from the mounting portion 341,
The mounting portion 341 is spline-fitted to the control shaft 32. In this way, the control shaft 32
The axial movement of the mounting portion 341 of the shift lever 34 mounted on the vehicle is restricted by snap rings 361 and 362 mounted on the control shaft 32 on both sides thereof. Therefore, the shift lever 34 operates integrally with the control shaft 32. The lever portion 342 of the shift lever 34 is arranged so as to pass through an opening 311a formed in the lower portion of the left casing 31a as shown in FIG. The tip portion of the lever portion 342 that constitutes the shift lever 34 has a first select position SP1,
Second select position SP2, third select position SP
3, a shift block 301 constituting a shift mechanism of a transmission (not shown) arranged at the fourth select position SP4,
It is adapted to properly engage with 302, 303, 304. In the illustrated embodiment, the first select position SP1 is the reverse-first speed select position, the second select position SP2 is the second-third speed select position, and the third select position SP3 is the fourth-speed position. The fifth speed select position and the fourth select position SP4 are set to the sixth speed select position.

A base portion of an operating lever 70, which constitutes a shift actuator 7, which will be described later, is spline-fitted to the control shaft 32 so as to be slidable in the axial direction between the bearing bushes 331 and 332. In addition,
The operating lever 70 is disposed in a space 313b formed in the shift actuator mounting portion 311b provided in the right casing 31b, and its tip (lower end) is formed in the opening 3 formed in the shift actuator mounting portion 311b.
It reaches the center of 12b.

The select actuator 3 in the illustrated embodiment includes a pair of electromagnetic valves arranged on the same axis as the control shaft 32 at both ends of a casing composed of the two left casings 31a and the right casing 31b. It is equipped with coils 4 and 5. The first electromagnetic solenoid 4 attached to the right end of the right casing 31b in FIGS. 1 and 2 includes a cylindrical case 41,
On the same axis as the electromagnetic coil 42 disposed inside the case 41, the fixed iron core 43 disposed inside the electromagnetic coil 42, and one end face (right end face in FIG. 1) of the fixed iron core 43. A movable iron core 44, an operating rod 45 attached to the movable iron core 43, and a cover 46 attached to one end (the right end in FIGS. 1 and 2) of the cylindrical case 41. There is.

The cylindrical case 41 has an end wall 411 having a hole 412 at the center at one end (right end in FIGS. 1 and 2) and the other end (left end in FIGS. 1 and 2). It is open. The electromagnetic coil 42 is wound around an annular bobbin 47 made of a non-magnetic material such as synthetic resin and arranged along the inner circumference of the case 41. The fixed iron core 43 is formed of a magnetic material, and has a flange portion 431 at the other end (left end in FIGS. 1 and 2), and the other end side of the case 41 (see FIG. 2 and the left end side in FIG. 2). The movable iron core 44 is made of a magnetic material, and is configured to be movable in and out of the fixed iron core 43 in the axial direction. The actuating rod 45 is made of a non-magnetic material such as stainless steel, and has a small diameter portion 451 at one end (the right end in FIGS. 1 and 2). The actuating rod 45 thus configured is attached to the movable iron core 44 by inserting the small diameter portion 451 into the hole 441 formed in the central portion of the movable iron core 44 and crimping one end thereof. The operating rod 45 mounted on the movable iron core 44 in this manner
Is arranged so that the other end thereof penetrates through a hole 432 formed in the central portion of the fixed iron core 43 and is slidable in the axial direction, and the other end surface (the left end surface in FIGS. 1 and 2) is the control shaft 32. It comes into contact with the right end surface of the. The cover 46 is attached to one end of the case 41 by a screw 48 and covers one end of the case 41 and one end of the movable iron core 44.

1 and 2 of the left casing 31a
The second electromagnetic solenoid 5 attached to the left end of
It has substantially the same configuration as the first electromagnetic solenoid 4 and is wound around a cylindrical case 51 and an annular bobbin 57 that is disposed in the case 51 and is made of a non-magnetic material such as synthetic resin. Electromagnetic coil 52, fixed iron core 53 formed in the electromagnetic coil 52 and formed of a magnetic material, and movable formed of a magnetic material that is arranged on the same axis facing the other end surface of the fixed iron core 53. An iron core 54 and a non-magnetic material such as stainless steel, one end of which is attached to the movable iron core 54 and one end of which penetrates a hole 531 formed in the central portion of the fixed iron core 53 and is slidable in the axial direction. The operating rod 55 and a cover 56 attached to the other end of the cylindrical case 51 with a screw 58. In the second electromagnetic solenoid 5 configured as described above, one end surface (the right end surface in FIGS. 1 and 2) of the actuation rod 55 contacts the left end surface of the control shaft 32.

The first constituting the select actuator 3
The electromagnetic solenoid 4 and the second electromagnetic solenoid 5 are configured as described above, and when the electromagnetic coil 42 of the first electromagnetic solenoid 4 is energized, the fixed iron core 43 is magnetized,
The movable iron core 44 is attracted to the fixed iron core 43 to move the movable iron core 44.
That is, the actuating rod 45 generates a thrust to the left in FIGS. 1 and 2. As a result, the control shaft 32 that is in contact with the operating rod 45 is moved to the left in FIGS. 1 and 2. On the other hand, when the electromagnetic coil 52 of the second electromagnetic solenoid 5 is energized, the fixed iron core 53 is magnetized, the movable iron core 54 is attracted to the fixed iron core 53, and the movable iron core 54, that is, the operating rod 55 is moved to the right in FIGS. Thrust is generated. As a result, the operating rod 5
The control shaft 32 which is in contact with 5 is moved to the right in FIGS. 1 and 2. The magnitude of the thrust generated on the movable iron cores 44 and 54 of the first electromagnetic solenoid 4 and the second electromagnetic solenoid 5, that is, the operating rods 45 and 55 is determined by the amount of electric power supplied to the electromagnetic coils 42 and 52.

The select actuator 3 in the illustrated embodiment has movable iron cores 44 and 54, that is, movable iron cores 44 and 54 corresponding to the amount of electric power supplied to the electromagnetic coil 42 of the first electromagnetic solenoid 4 and the electromagnetic coil 52 of the second electromagnetic solenoid 5. The shift lever 34 is moved to the first select position SP in cooperation with the magnitude of the thrust generated on the operating rods 45 and 55.
1, second select position SP2, third select position S
A select position restricting mechanism 6 for restricting the position at P3 and the fourth select position SP4 is provided. The select position regulating mechanism 6 includes a first select position regulating mechanism 61 arranged on the right side of the mounting portion 341 of the shift lever 34 and a second select position regulating mechanism arranged on the left side of the mounting portion 341 of the shift lever 34. It is composed of a regulation mechanism 62. The first select position regulation mechanism 61 includes the control shaft 32.
An annular moving ring 611 slidably arranged along
And an annular stopper 612 whose rightward movement is restricted in FIGS. 1 and 2 by a cylindrical spacer 37 arranged to the right of the moving ring 611 and between the bearing bush 332. A first compression coil spring 613 disposed between the moving ring 611 and the mounting portion 341 of the shift lever 34, the moving ring 611 and the stopper 6
And a second compression coil spring 614 disposed between the first compression coil spring 12 and the second compression coil spring 614. The spring force of the second compression coil spring 614 is set to be larger than that of the first compression coil spring 613.

The second select position restricting mechanism 62 includes an annular moving ring 621 slidably arranged along the control shaft 32 and the bearing bush 333 arranged to the left of the moving ring 621. 1 and 2
Stopper 6 whose movement to the left is restricted at
22, a first compression coil spring 623 disposed between the moving ring 621 and the mounting portion 341 of the shift lever 34.
And a second compression coil spring 624 disposed between the moving ring 621 and the stopper 622. The spring force of the second compression coil spring 624 is set to be larger than that of the first compression coil spring 623.

The select actuator 3 in the illustrated embodiment is configured as described above, and its operation will be described below with reference to FIG. The electromagnetic coil 42 of the first electromagnetic solenoid 4 and the electromagnetic coil 52 of the second electromagnetic solenoid 5 which configure the select actuator 3.
When power is not being supplied to the
First compression coil spring 613, second compression coil spring 614, and second
1 and 2 in which the spring forces of the first compression coil spring 623 and the second compression coil spring 624 forming the select position restricting means 62 are balanced.

From the state shown in FIGS. 1 and 2, to the electromagnetic coil 42 constituting the first electromagnetic solenoid 4, for example, 2.4.
When a voltage of V is applied, the fixed iron core 43 is excited and the movable iron core 44 is attracted to the fixed iron core 43, and a thrust force to the left in the figure is generated. As a result, as shown in FIG. 4A, the control rod 32 is mounted on the movable iron core 44, and the control shaft 32 constitutes the second select position restricting means 62.
It moves to the left in the figure against the spring force of the compression coil spring 624 of FIG. At this time, the second compression coil spring 624
Is set to be larger than the spring force of the first compression coil spring 623, the moving ring 621 is not displaced. Then, the control shaft 32 stops at the position where the left end of the mounting portion 341 of the shift lever 34 in the drawing abuts on the moving ring 621 that constitutes the second select position restricting mechanism 62. As a result, the shift lever 34 mounted on the control shaft 32 is positioned at the second operating position (P2) as shown in FIG.

Next, when a voltage of, for example, 4.8 V is applied to the electromagnetic coil 42 constituting the first electromagnetic solenoid 4,
The thrust to the left generated in the movable iron core 43, that is, the operating rod 45, increases. As a result, as shown in FIG. 4B, the control shaft 32 abutted on the operating rod 45.
The mounting portion 341 of the shift lever 34 is attached to the moving ring 62.
In the state of being in contact with No. 1, it moves to the left in the figure against the spring force of the second compression coil spring 624. Then, the moving ring 621 stops at the position where it abuts on the stopper 622. As a result, the shift lever 34 mounted on the control shaft 32 is positioned at the first operating position (P1) as shown in FIG.

Next, from the state shown in FIG. 1 and FIG.
When a voltage of 2.4 V, for example, is applied to the electromagnetic coil 52 of the electromagnetic solenoid 5, the fixed iron core 53 is excited and the movable iron core 54 is attracted to the fixed iron core 53, and a thrust force to the right in the figure is generated. As a result, as shown in FIG. 4C, the control shaft 32 is constituted by the operating rod 55 mounted on the movable iron core 54 so that the control shaft 32 constitutes the first select position restricting means 61. It moves to the right in the figure against the spring force of the compression coil spring 614. At this time, since the spring force of the second compression coil spring 614 is set to be larger than that of the first compression coil spring 413, the moving ring 611 is not displaced. In the control shaft 32, the right end of the mounting portion 341 of the shift lever 34 in the drawing constitutes a moving ring 611 that constitutes the first select position restricting mechanism 61.
Stop at the position where it abuts against. As a result, the shift lever 34 mounted on the control shaft 32 is positioned at the third operating position (P3) as shown in FIG. 4 (c).

Next, when a voltage of, for example, 4.8 V is applied to the electromagnetic coil 52 which constitutes the second electromagnetic solenoid 5,
The thrust to the left generated in the movable iron core 53, that is, the operating rod 55, increases. As a result, as shown in FIG. 4D, the control shaft 32 abutted on the operating rod 55.
The mounting portion 341 of the shift lever 34 is attached to the moving ring 61.
In the state of being in contact with No. 1, it moves to the right in the figure against the spring force of the second compression coil spring 614. Then, the moving ring 611 stops at the position where it abuts on the stopper 612. As a result, the shift lever 34 mounted on the control shaft 32 is positioned at the fourth operating position (P4) as shown in FIG.

As described above, since the select actuator 3 which constitutes the gear shift operating device 2 is provided with the pair of electromagnetic solenoids, that is, the first electromagnetic solenoid 4 and the second electromagnetic solenoid 5, as the drive source, each of them is provided. Since the actuation stroke of the electromagnetic solenoid can be shortened, the required thrust can be obtained without increasing the power supply even when there are many select positions.

Next, regarding the shift actuator 7,
The description will be given mainly with reference to FIG. The illustrated shift actuator 7 includes an operating lever 70 mounted on the control shaft 32, a first electromagnetic solenoid 8 and a second electromagnetic solenoid 9 for operating the operating lever 70. The first electromagnetic solenoid 8 and the second electromagnetic solenoid 9 correspond to the shift actuator mounting portion 311.
It is arranged on both side surfaces of b so as to face each other.

Next, the first electromagnetic solenoid 8 will be described. The first electromagnetic solenoid 8 has substantially the same structure as the first electromagnetic solenoid 4 and the second electromagnetic solenoid 5 that constitute the select actuator 3,
A cylindrical case 81, an electromagnetic coil 82 wound inside an annular bobbin 87 made of a non-magnetic material such as synthetic resin and arranged in the case 81, and a magnetic material arranged in the electromagnetic coil 82. The formed fixed iron core 83 and the fixed iron core 83
Of the movable iron core 84, which is arranged on the same axis so as to face one end surface of the movable core and is formed of a magnetic material, and one end of which is made of a non-magnetic material such as stainless steel is attached to the movable iron core 74 and the other end of which is a fixed iron core. It comprises an operating rod 85 penetrating through a hole 831 formed in the central portion of 83 and slidable in the axial direction, and a cover 86 attached to one end of the cylindrical case 81 by a screw 88. . The first electromagnetic solenoid 8 configured as described above is provided on the right side casing 31b.
The case 81 is attached to one side surface of the shift actuator attachment portion 311b provided in the above by an attachment bolt 89, and the tip of the operating rod 85 engages with the tip (lower end) of the operating lever 70. In the first electromagnetic solenoid 8 mounted on one side surface of the shift actuator mounting portion 311b in this manner, when the electromagnetic coil 82 is energized, the movable iron core 84 is attracted to the fixed iron core 83. As a result, the operating rod 8 mounted on the movable iron core 84
5 moves to the left in FIG. 3, and the tip thereof acts on the actuating lever 70 to rotate clockwise around the control shaft 32 in FIG. As a result, the control shaft 32 mounted with the operating lever 70 rotates, and the shift lever 34 mounted on the control shaft 32 is operated to shift in the first direction.

Next, the second electromagnetic solenoid 9 will be described. The second electromagnetic solenoid 9 is arranged so as to face the first electromagnetic solenoid 8 and is mounted on the other side surface of the shift actuator mounting portion 311b. Similarly to the first electromagnetic solenoid 8, the second electromagnetic solenoid 9 is also wound around a cylindrical case 91 and an annular bobbin 97 disposed in the case 91 and made of a non-magnetic material such as synthetic resin. Electromagnetic coil 92, fixed iron core 93 arranged in electromagnetic coil 92 and formed of magnetic material, and movable formed of magnetic material on the same axis facing one end surface of fixed iron core 93. The iron core 94 and a non-magnetic material such as stainless steel are attached to the movable iron core 94 at one end thereof and the other end of the iron core 94 is slidable in the axial direction through a hole 931 formed in the central portion of the fixed iron core 93. The operation rod 95 is arranged and includes a cover 96 attached to one end of the cylindrical case 91 by a screw 98. In the second electromagnetic solenoid 9 thus configured, the case 91 is mounted on the other side surface of the shift actuator mounting portion 311b by the mounting bolt 99, and the tip of the operating rod 95 is the tip portion (lower end portion) of the operating lever 70. ) Is engaged.
In the second electromagnetic solenoid 9 mounted on the other side surface of the shift actuator mounting portion 311b in this manner, when the electromagnetic coil 92 is energized, the movable iron core 94 is moved to the fixed iron core 93.
Is sucked into. As a result, the operating rod 995 attached to the movable iron core 94 moves to the right in FIG. 3, and its tip acts on the operating lever 70 to rotate counterclockwise about the control shaft 32 in FIG. To do. As a result, the control shaft 32 mounted with the actuating lever 70 rotates, so that the shift lever 34 mounted on the control shaft 32 shifts in the second direction.

[0028]

Since the shift operating device according to the present invention is constructed as described above, the following operational effects are achieved.

That is, according to the present invention, since the select actuator which constitutes the gear shift operating device is provided with the pair of electromagnetic solenoids as the drive source, the operating stroke of each electromagnetic solenoid can be shortened.
Even if there are a large number of select positions, the required thrust can be obtained without increasing the power supply.

[Brief description of drawings]

FIG. 1 is a first shift operating device constructed in accordance with the present invention.
Sectional drawing which shows the embodiment of FIG.

FIG. 2 is a sectional view taken along line AA in FIG.

3 is a sectional view taken along line BB in FIG.

FIG. 4 is an operation explanatory view of a select actuator which constitutes the shift operating device shown in FIG. 1.

[Explanation of symbols]

2: Gear change operation device 3: Select actuator 31a, 31b: casing 32: Control shaft 331, 332, 333: Bearing bush 34: shift lever 35: 4: First electromagnetic solenoid of select actuator 41: Cylindrical case 42: Electromagnetic coil 43: Fixed iron core 44: Movable iron core 45: Actuating rod 46: Cover 5: Second electromagnetic solenoid of select actuator 51: Cylindrical case 52: Electromagnetic coil 53: Fixed iron core 54: Movable iron core 55: Actuating rod 56: Cover 6: Select position regulation mechanism 61: First select position regulation mechanism 611: Moving ring 612: stopper 613: First compression coil spring 614: Second compression coil spring 62: Second select position regulation mechanism 621: moving ring 622: Stopper 623: First compression coil spring 624: Second compression coil spring 7: Shift actuator 70: Actuating lever 8: First electromagnetic solenoid 81: Case 82: Electromagnetic coil 83: Fixed iron core 84: Movable iron core 85: Actuating rod 86: Cover 9: Second electromagnetic solenoid 91: Case 92: Electromagnetic coil 93: Fixed iron core 94: Movable iron core 95: Actuating rod 96: Cover

Claims (3)

[Claims] 1. A shift operation device having a select actuator for actuating a shift lever in a select direction and a shift actuator for actuating the shift lever in the shift direction, wherein the select actuator comprises a cylindrical casing and an inside of the casing. A control shaft that is axially slidably and rotatably supported by the shift lever and a pair of electromagnetic solenoids that are disposed at both ends of the casing and that actuate the control shaft in the axial direction that is the select direction. And the shift actuator rotates the control shaft in a shift direction. 2. The select actuator includes a select position restricting mechanism for restricting a plurality of operating positions of the shift lever according to a thrust force corresponding to the amount of electric power supplied to the electromagnetic coils of the pair of electromagnetic solenoids. The gear shift operating device according to claim 1, wherein 3. The shift actuator comprises an operating lever mounted on the control shaft, and a pair arranged to face the operating lever and rotate the control shaft in respective shift directions via the operating lever. 2. The gear shift operation device according to claim 1, further comprising: