JP2005188625A - Speed change operation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a speed change operation device for quickly moving a shift lever into a neutral region. <P>SOLUTION: The speed change operation device 2 comprises a first solenoid 7 for moving the shift lever 35 to a preset shifting direction, a second solenoid 8 for moving the shift lever 35 to the opposite direction, and a control device 10 for controlling both solenoids 7, 8. When the shift lever 35 is moved from a preset gear stage into the neutral region, the control device 10 first operates one of the first and second solenoids 7, 8, and when the shift lever 35 is located in the neutral region, then it stores a control value for one of the first and second solenoids 7, 8 at the time, keeps the control value for one of the first and second solenoids 7, 8 at the stored value and operates the other of the first and second solenoids 7, 8 at a control value smaller than the stored value. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a shift operation device that automatically controls a shift operation of a transmission.

  In a transmission for a vehicle and the like, various shift operation devices for automatically moving a shift lever of the transmission, that is, a shift operation, have been proposed.

  For example, the shift operation devices described in Patent Documents 1 and 2 automatically move the shift lever using an air cylinder.

  This shift operating device is used as an actuator for moving the shift lever in the shift direction, in order to move the first air cylinder for moving the shift lever in a predetermined shift direction, and in the shift direction opposite to the first air cylinder. The second air cylinder.

Japanese Utility Model Publication No. 61-142948 Japanese Utility Model Publication No. 61-142949

  In such a speed change operation device, when the shift lever is moved from the state in which it is geared into a predetermined gear stage to the neutral region, first, a valve for supplying air to one air cylinder is fully opened to move the shift lever to the predetermined gear. When a predetermined time has passed after the gear is removed from the stage, the valve that supplies air to the other air cylinder is also fully opened to maintain the shift lever in the neutral region. In other words, the shift lever is positioned in the neutral region (neutral region) by pushing the shift lever with the maximum force from both sides in the shift direction (the force that can shift the shift lever in each shift direction).

  However, in such a conventional speed change operation device, 1) the shift lever is pushed from both sides with a force larger than the force required to move to the neutral region, and 2) the force that moves the shift lever in both shift directions. Since there is a time difference in the occurrence of shift, hunting of the shift lever (reciprocating movement across the neutral region) may occur, resulting in a prolonged shift operation.

  Accordingly, an object of the present invention is to solve the above-described problems and to provide a shift operation device that can quickly move a shift lever to a neutral region.

  In order to achieve the above object, the present invention provides a first electromagnetic solenoid for moving a shift lever of a transmission in a predetermined shift direction, and the shift lever is moved in a shift direction opposite to the first electromagnetic solenoid. A shift operation device comprising: a second electromagnetic solenoid for controlling the two solenoid solenoids; a control device for controlling both of the electromagnetic solenoids; and a detection means for detecting the position of the shift lever. When moving from the gear-in state to the neutral region to the neutral region, first, one of the first and second electromagnetic solenoids is operated to disengage the shift lever from the predetermined gear step, If the detecting means detects that the shift lever is positioned in the neutral region, the first and second electromagnetic solenoids at that time The control value for one is stored, the control value for one of the first and second electromagnetic solenoids is maintained at the stored control value, and the other of the first and second electromagnetic solenoids is set to be greater than the stored control value. It operates with a small control value.

  Furthermore, the present invention provides a first electromagnetic solenoid for moving a shift lever of a transmission in a predetermined shift direction, and a second electromagnetic for moving the shift lever in a shift direction opposite to the first electromagnetic solenoid. A shift operating device comprising a solenoid, a control device for controlling both of the electromagnetic solenoids, and a detecting means for detecting the position of the shift lever, wherein the control device moves the shift lever to a predetermined gear stage. When moving from the geared state to the neutral region, first, one of the first and second electromagnetic solenoids is operated to disengage the shift lever from the predetermined gear stage, and the shift lever is detected by the detecting means. Is detected in the neutral region, the control value for one of the first and second electromagnetic solenoids at that time Stored, both the first and second electromagnetic solenoid is intended to operate with a small control value than the control value the memory.

  Here, the control device performs duty control on energization of the first and second electromagnetic solenoids, and the control value may be a duty ratio.

  According to the present invention, the following excellent effects are exhibited.

  (1) According to the first aspect of the invention, after the shift lever moves to the neutral region, the control amount of the electromagnetic solenoid that moves the shift lever in the gear release direction is the control amount that moves the shift lever to the neutral region. In addition, since the control amount of the electromagnetic solenoid moved to the opposite side to the gear release direction is smaller than that, the shift lever is not hunted and can be quickly positioned in the neutral region.

  (2) According to the invention of claim 2, after the shift lever moves to the neutral region, the electromagnetic solenoid that moves the shift lever in the gear release direction and the control amount of the electromagnetic solenoid that moves the shift lever to the opposite side of the gear release direction However, since the amount of control is less than the control amount required to move the shift lever to the neutral region, the shift lever is not hunted and can be quickly positioned in the neutral region.

  (3) According to the invention of claim 3, it is possible to strictly control the position and moving speed of the shift lever by duty-controlling the first and second electromagnetic solenoids.

  Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

  1 is a plan sectional view of the speed change operation device of the present embodiment, FIG. 2 is a sectional view taken along the line II-II in FIG. 1, and FIG. 3 is a sectional view taken along the line III-III in FIG. The basic structure of the speed change operation device of this embodiment is the same as that described in Japanese Patent Application Laid-Open No. 2002-372147 filed earlier by the present applicant, and the shift lever of the transmission is an electromagnetic solenoid. It is moved by.

  The shift operating device 2 controls a select actuator 3 that moves a shift lever 35 of a transmission (not shown) in the select direction, a shift actuator 6 that moves the shift lever 35 in the shift direction, and controls these actuators 3 and 6. And a detecting means 13 and 14 for detecting the position of the shift lever 35.

  As shown in FIG. 2, in the present embodiment, there are four positions, the first select position SP1, the second select position SP2, the third select position SP3, and the fourth select position SP4, as the select position of the shift lever 35. The first select position SP1 is the reverse gear (R) and the first gear, the second select position SP2 is the second and third gear, and the third select position SP3 is the fourth and fifth gear. The fourth select position SP4 corresponds to the sixth gear.

  The select actuator 3 that moves the shift lever 35 in the select direction includes three casings 31a, 31b, and 31c that are formed in a substantially cylindrical shape and are connected to each other in the select direction (lateral direction in FIGS. 1 and 2). A control shaft 12 connected to the shift lever 35 is disposed in the casings 31a, 31b, 31c.

  The control shaft 12 is rotatable in the left end casing 31a and is movable in the axial direction (select direction), and is rotatable in the central casing 31b and the right end casing 31c but is not movable in the axial direction. The first and second shafts 32 and 33 are connected to each other through a spline 37 so as not to be relatively rotatable and to be relatively movable in the axial direction. That is, the first shaft 32 can move relative to the second shaft 33 in the axial direction in the left end casing 31a. The right end portion of the second shaft 33 is rotatably supported in the right end casing 31c via a bearing 34.

  The shift lever 35 extends into the left end casing 31a through an opening 311a (see FIG. 2) formed in the left end casing 31a, and is connected to the first shaft 32 through the spline 38 so as not to be relatively rotatable. Further, the shift lever 35 is restricted from moving in the axial direction by the shoulder portion 32 a provided on the first shaft 32 and the snap ring 36, and cannot be moved relative to the first shaft 32 in the axial direction. ing.

  The select actuator 3 further includes an electromagnetic solenoid 4 for moving the first shaft 32 and the shift lever 35 in the select direction. The electromagnetic solenoid 4 includes a cylindrical case 41 connected to the left end of the left end casing 31a, an electromagnetic coil 42 disposed in the case 41, and a cylindrical shape provided in the electromagnetic coil 42 so as not to move in the axial direction. The fixed iron core 43, a cylindrical movable iron core 44 provided on the left side of the fixed iron core 43 so as to be coaxial and axially movable, and connected to the movable iron core 44, pass through the hollow portion of the fixed iron core 43, and the left end casing 31a. An operating rod 45 extending inward and a cover 46 attached to the left end of the case 41 are provided. The distal end portion of the operating rod 45 contacts the left end of the first shaft 32.

  The electromagnetic coil 42 of the electromagnetic solenoid 4 is connected to the control device 10 so that the electromagnetic coil 42 can be energized by the control device 10. When the electromagnetic coil 42 is energized, the fixed iron core 43 is magnetized to a magnetic force corresponding to the energization amount, and the movable iron core 44 is attracted to the fixed iron core 43 side by the magnetic force. As a result, a thrust is generated that pushes the shift lever 35 to the right in the select direction via the movable iron core 44, the operating rod 45, and the first shaft 32.

  The select actuator 3 further includes a select position restricting mechanism 5 that biases the first shaft 32 and the shift lever 35 to the left in the select direction (that is, the direction opposite to the thrust generated by the electromagnetic solenoid 4).

  The select position restricting mechanism 5 includes a first moving ring 51 provided on the outer periphery of the first shaft 32 so as to be movable in the axial direction, and second and second parts provided on the outer periphery of the second shaft 33 so as to be movable in the axial direction. Three moving rings 52 and 53, and a fixed ring 59 provided on the outer periphery of the second shaft so as not to move in the axial direction.

  The first moving ring 51 is restricted from moving leftward by a snap ring 58 mounted on the inner surface of the left end casing 31a and a shoulder 322 formed on the outer surface of the first shaft 32. A first compression coil spring 54 is disposed between the first movement ring 51 and the second movement ring 52, and a second compression coil spring 55 is disposed between the second movement ring 52 and the fixed ring 59, A third compression coil spring 56 is disposed between the second movement ring 52 and the third movement ring 53, and a fourth compression coil spring 57 is disposed between the third movement ring 53 and the fixed ring 59. . Here, the spring force of the first compression coil spring 54 is set smaller than the total spring force of the second compression coil spring 55 and the third compression coil spring 56. The spring force of the fourth compression coil spring 57 is set to be larger than the total spring force of the second compression coil spring 55 and the third compression coil spring 56.

  In the select actuator 3, when power is not supplied to the electromagnetic coil 42 of the electromagnetic solenoid 4 (when no power is supplied), the first moving ring 51, the first shaft 32, and the shift lever 35 are in the first to first directions. 4 urged to the left in the select direction by the spring force of the compression coil springs 54, 55, 56, 57, and the left end of the first moving ring 51 is located at the left limit position where it engages with the snap ring 58 (FIGS. 1 and 2). reference). At this time, the shift lever 35 is located at the first select position SP1 described above.

  Next, when a current of a first voltage (for example, 2 V) set in advance is applied to the electromagnetic coil 42 of the electromagnetic solenoid 4, the fixed iron core 43 is excited, and the first shaft 32 is interposed via the movable iron core 44 and the operating rod 45. In addition, a thrust to the right in the select direction is applied to the shift lever 35. In the first voltage, the thrust applied to the first shaft 32 and the shift lever 35 is larger than the spring force of the first compression coil spring 54, and the total spring of the second compression coil spring 55 and the third compression coil spring 56. It is set to be smaller than the force. Therefore, in this case, as shown in FIG. 4A, the first shaft 32 and the shift lever 35 move to the right in the select direction until the right end of the first moving ring 51 comes into contact with the left end of the second moving ring 52. . The second and third moving rings 52 and 53 are not displaced. At this time, the shift lever 35 is located at the second select position SP2.

  Next, when a current of a preset second voltage (for example, 4 V) is applied to the electromagnetic coil 42 of the electromagnetic solenoid 4, a large thrust is applied to the first shaft 32 and the shift lever 35. The second voltage is such that the thrust applied to the first shaft 32 and the shift lever 35 is greater than the total spring force of the first to third compression coil springs 54, 55, 56, and the spring force of the fourth compression coil spring 57. It is set to be smaller than that. Therefore, in this case, as shown in FIG. 4B, the first shaft 32 and the shift lever 35 move to the right in the select direction until the right end of the second moving ring 52 contacts the left end of the third moving ring 53. . Note that the third moving ring 53 is not displaced. At this time, the shift lever 35 is located at the third select position SP3.

  Next, when a current of a preset third voltage (for example, 8 V) is applied to the electromagnetic coil 42 of the electromagnetic solenoid 4, a larger thrust is applied to the first shaft 32 and the shift lever 35. The third voltage is set so that the thrust applied to the first shaft 32 and the shift lever 35 is larger than the total spring force of the first to fourth compression coil springs 54, 55, 56, and 57. Therefore, in this case, as shown in FIG. 4C, the first shaft 32 and the shift lever 35 move to the right limit position where the right end of the third moving ring 53 contacts the left end of the fixed ring 59. At this time, the shift lever 35 is located at the fourth select position SP4.

  As described above, the control device 10 can control the energization amount (energization voltage) of the electromagnetic solenoid 4 to the electromagnetic coil 42 to control the select position of the shift lever 35.

  Next, the shift actuator 6 that moves the shift lever 35 in the shift direction will be described mainly with reference to FIG.

  The shift actuator 6 is an operation rod 60 that is connected to the second shaft 33 of the select actuator 3 so as not to rotate relative to the second actuator 33, and is disposed on both lower ends of the operation rod 60. The operation rod 60 and the second shaft connected thereto. First and second electromagnetic solenoids 7 and 8 for rotating the shift lever 35 in the shift direction by rotating the 33 and the first shaft 32 are provided.

  The first and second electromagnetic solenoids 7 and 8 are respectively cylindrical cases 71 and 81 connected to the side of the central casing 31b, electromagnetic coils 72 and 82 disposed in the cases 71 and 81, and electromagnetic Cylindrical fixed iron cores 73 and 83 that are immovable in the coils 72 and 82, and cylindrical movable irons that are coaxial with the fixed iron cores 73 and 83 and movable in the axial direction (left and right in FIG. 3). The iron cores 74 and 84 are connected to the movable iron cores 74 and 84, and are attached to the operation rods 75 and 85 that contact the operation rod 60 through the hollow portions of the fixed iron cores 73 and 83, and the sides of the cases 71 and 81. And covers 76 and 86.

  The electromagnetic coils 72 and 82 of the first and second electromagnetic solenoids 7 and 8 are connected to the control device 10 so that the control device 10 can energize the electromagnetic coils 72 and 82. When the electromagnetic coils 72 and 82 are energized, the fixed iron cores 73 and 83 are magnetized to a magnetic force corresponding to the energization amount, and the movable iron cores 74 and 84 and the operating rods 75 and 85 are moved to the fixed iron core 73 and 83 side (in FIG. 3). , Center side). As a result, the distal end portion of the operating rod 60 is pressed by the operating rods 75 and 85, and the operating rod 60 and the first and second shafts 32 and 33 are rotated. As a result, the shift lever 35 is moved in the shift direction.

  For example, when the electromagnetic coil 72 of the left first electromagnetic solenoid 7 in FIG. 3 is energized, the operating rod 60 rotates counterclockwise in FIG. 3, and the shift lever 35 moves to the right in the shift direction in FIG. Conversely, when the electromagnetic coil 82 of the second electromagnetic solenoid 8 is energized, the operating rod 60 rotates clockwise in FIG. 3, and the shift lever 35 moves to the left in the shift direction.

  The control device 10 controls the shift position of the shift lever 35 by duty-controlling the energization amount to the electromagnetic coils 72 and 82 of the first and second electromagnetic solenoids 7 and 8. That is, since a force for moving the shift lever 35 in the shift direction is generated substantially in proportion to the duty ratio of the first and second electromagnetic solenoids 7 and 8 to the electromagnetic coils 72 and 82, the duty ratio of the electromagnetic coils 72 and 82 is increased. By controlling the above, it is possible to control the force for moving the shift lever 35 in the shift direction and the position in the shift direction.

  Next, detection means for detecting the position of the shift lever 35 is provided in the left end casing 31a of the select actuator 3, and the select position detection sensor 13 for detecting the axial position of the shift lever 35, that is, the select position. (See FIGS. 1 and 2) and a shift position detection sensor 14 (FIG. 2) provided near the upper portion of the operating rod 60 of the shift actuator 6 and detecting the rotation angle of the operating rod 60, that is, the shift position of the shift lever 35. And FIG. 3). These sensors 13 and 14 are composed of position sensors, and the detected values are transmitted to the control device 10. The control device 10 determines the position of the shift lever 35 and the gear position of the transmission based on the detection values of the sensors 13 and 14.

  Now, in the shift operation device 2 of this embodiment having such a structure, when the shift lever 35 is moved from the state in which it is geared into a predetermined gear stage to the neutral region, the shift lever 35 is quickly moved to the neutral region. The device has been devised so that it can be positioned at. This will be described below.

  Here, a case will be described in which the shift lever 35 is moved from a state where it is geared in to the gear stage located on the left side in the shift direction in FIG. 3 to the neutral region (N region).

  When the shift lever 35 is geared in, both the electromagnetic coils 72 and 82 of the first and second electromagnetic solenoids 7 and 8 are not energized (duty ratio 0%).

  When the shift lever 35 is moved from the state to the neutral region, the control device 10 first energizes (actuates) the electromagnetic coil 72 of the first electromagnetic solenoid 7 to release the gear. At this time, the control device 10 performs feedback control (for example, PID control) on the duty ratio of the first electromagnetic solenoid 7 to the electromagnetic coil 72 based on the detection value of the shift position detection sensor 14. Thereby, the moving speed (gear release speed) of the shift lever 35 can be appropriately controlled, and an excessive load can be prevented from being applied to the synchronization mechanism of the transmission.

  If it is detected by the shift position detection sensor (detection means) 14 that the shift lever 35 is disengaged and positioned in a predetermined neutral region (N region) by energization of the electromagnetic coil 72 of the first electromagnetic solenoid 7, The control device 10 stores the control value (duty ratio) for the electromagnetic coil 72 of the first electromagnetic solenoid 7 at that time. That is, this control value is a value that generates a driving force necessary to move (position) the shift lever 35 to the neutral region.

  Thereafter, the control device 10 maintains the control value (duty ratio) for the electromagnetic coil 72 of the first electromagnetic solenoid 7 at the stored control value, and also stores the control value (duty) of the electromagnetic coil 82 of the second electromagnetic solenoid 8. Actuate (energize) with a control value smaller than the ratio.

  As a result, the shift lever 35 located in the neutral region is pushed from the first electromagnetic solenoid 7 with a force necessary to be located in the neutral region, and is pushed from the second electromagnetic solenoid 8 with a weaker force. Will be. As a result, the shift lever 35 is positioned in the neutral region.

  As described above, according to the speed change operating device 2 of the present embodiment, when the shift lever 35 is moved from the state in which the gear is engaged to a predetermined gear stage to the neutral region, the shift lever 35 exceeds the neutral region. Since a large force that moves to the opposite side in the shift direction is not applied, the shift lever 35 does not hunt across the neutral region. Therefore, the shift lever 35 can be quickly positioned in the neutral region, and the speed change operation can be performed quickly.

  In particular, the speed change operation device 2 according to the present embodiment uses the electromagnetic solenoids 7 and 8 as means for moving the shift lever 35 and controls the duty of the electromagnetic solenoids 7 and 8, so that the shift lever 35 is placed in the neutral region. It can be positioned accurately.

  By the way, the control value for the electromagnetic coil 82 of the second electromagnetic solenoid 8 that moves the shift lever 35 in the direction opposite to the gear release direction is a control value that generates a force necessary to position the shift lever 35 in the neutral region ( However, it is preferable that the control value is slightly smaller than the stored control value, and it is not necessary to make it extremely small. For example, this control value is such that when some external force is applied to the shift lever 35 located in the neutral region and the shift lever 35 attempts to move, the movement is restricted and the shift lever 35 is maintained in the neutral region. It is preferable to set it to a value that allows it.

  Of course, the same control as described above is performed when the shift lever 35 is moved to the neutral region from the state in which the shift lever 35 is geared to the right side in the shift direction in FIG.

  In the above embodiment, when the shift lever 35 is positioned in the neutral region, the control value at that time is stored, and then the control value for the electromagnetic solenoid that moves the shift lever 35 in the gear release direction is stored. However, the present invention is not limited in this respect, and if the shift lever 35 is located in the neutral region, the control value for the electromagnetic solenoid that moves the shift lever 35 in the gear release direction is reduced. The control value may be smaller than the stored control value. At this time, it is preferable to make the control value after the decrease equal to the control value for the other electromagnetic solenoid (the electromagnetic solenoid that moves the shift lever 35 to the side opposite to the gear release direction).

  In this case, a force smaller than the force required to position the shift lever 35 in the neutral region is applied from both sides in the shift direction, but the shift lever 35 is already positioned in the neutral region. As a result, the neutral region is maintained. In this case as well, naturally, a large force that moves the shift lever 35 beyond the neutral region to the opposite side in the shift direction is not applied, so that the shift lever 35 is not hunted.

  The operation (energization) of the electromagnetic solenoid moved in the direction opposite to the gear release direction and the control amount reduction for the electromagnetic solenoid moved in the gear release direction may be performed simultaneously, or on the opposite side of the gear release direction. After actuating the electromagnetic solenoid to be moved, the control amount for the other electromagnetic solenoid may be reduced.

  Here, it is also conceivable that a control value necessary for positioning the shift lever 35 in the neutral region is obtained in advance through experiments or the like and input to the control device 10. However, since the control value necessary for positioning the shift lever 35 in the neutral region may vary depending on the temperature of the lubricating oil, the wear state of each sliding portion of the transmission, etc., as described above, the shift lever It is preferable to store the control value every time when 35 is actually moved.

  In addition, the specific structure of the speed change operation apparatus 2 is shown as an example, and does not limit the present invention. For example, the invention can be applied to other types of speed change operation devices such as those described in Japanese Patent Application Laid-Open No. 2003-14105 filed earlier by the present applicant.

It is a plane sectional view of the speed change operation device concerning one embodiment of the present invention. It is the II-II sectional view taken on the line of FIG. It is the III-III sectional view taken on the line of FIG. (A) is a figure which shows the state in which the shift lever was located in the 2nd select position. (B) is a figure which shows the state which the shift lever was located in the 3rd select position. (C) is a figure which shows the state in which the shift lever was located in the 4th select position.

Explanation of symbols

2 shift operation device 3 select actuator 4 electromagnetic solenoid 5 select position restriction mechanism 6 shift actuator 7 first electromagnetic solenoid 8 second electromagnetic solenoid 10 control device 13 select position detection sensor 14 shift position detection sensor (detection means)
35 Shift lever 72 Electromagnetic coil 82 Electromagnetic coil

Claims (3)

A first electromagnetic solenoid for moving a shift lever of the transmission in a predetermined shift direction; a second electromagnetic solenoid for moving the shift lever in a shift direction opposite to the first electromagnetic solenoid; A speed change operation device comprising a control device for controlling an electromagnetic solenoid and a detection means for detecting the position of the shift lever,
When the control device moves the shift lever from a state in which it is geared into a predetermined gear stage to a neutral region, first, one of the first and second electromagnetic solenoids is operated to move the shift lever to the predetermined gear. If the detection means detects that the shift lever is located in the neutral region, the control value for one of the first and second electromagnetic solenoids at that time is stored, The control value for one of the first and second electromagnetic solenoids is maintained at the stored control value, and the other of the first and second electromagnetic solenoids is operated with a control value smaller than the stored control value. A shift operating device. A first electromagnetic solenoid for moving a shift lever of the transmission in a predetermined shift direction; a second electromagnetic solenoid for moving the shift lever in a shift direction opposite to the first electromagnetic solenoid; A speed change operation device comprising a control device for controlling an electromagnetic solenoid and a detection means for detecting the position of the shift lever,
When the control device moves the shift lever from a state in which it is geared into a predetermined gear stage to a neutral region, first, one of the first and second electromagnetic solenoids is operated to move the shift lever to the predetermined gear. If the detection means detects that the shift lever is positioned in the neutral region, the control value for one of the first and second electromagnetic solenoids at that time is stored, A speed change operation device, wherein both the first and second electromagnetic solenoids are operated with a control value smaller than the stored control value. The speed change operation device according to claim 1 or 2, wherein the control device performs duty control on energization of the first and second electromagnetic solenoids, and the control value is a duty ratio.

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