JP2004138142A - Operating actuator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a highly durable and low energy-consumable operating actuator. <P>SOLUTION: A locking means fixing motions of a transmitting passage is provided in the operating actuator, and fixing and releasing of the locking means is controlled on a location of the transmitting passage. The highly durable and low energy-consumable operating actuator can receive reaction force with the magnetic fluid fixing means while a starting clutch is maintained in an off state, can improve durability of a driving means by making operating force of the driving means into zero, and can save energy consumption. Further, reaction force given by the starting clutch is received by a locking mechanism, and output of the starting clutch is decreased to zero. Thus, the operating actuator is designed to prevent the driving means from generating heat, to improve durability, and to consume energy in a low level. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an actuator for operating a device of an automobile, and more particularly to an actuator for operating a starting clutch for an automobile.
[0002]
[Prior art]
An operation actuator of a start clutch for an automobile receives a large reaction force from the start clutch during operation. Therefore, it is necessary to maintain the output of the actuator in order to maintain the operation state. However, sustaining the output for a long time is not preferable from the viewpoint of durability of the driving means and energy consumption. For this reason, a method has been devised in which a power storage device is arranged on the transmission path of the driving force, the operating force of the driving means is reduced by the urging force of the power storage device, and the operation state is maintained with small energy.
[0003]
As a conventional example, Patent Document 1 discloses a device in which an actuator has a power storage device, the power storage device is coupled to an output portion of the actuator, and the operation force of the driving unit is reduced by the operation of the power storage device. ing.
[0004]
[Patent Document 1]
JP-A-9-207600
[Problems to be solved by the invention]
However, in the above-described configuration of the related art, the operation force of the driving unit is reduced only, and the operation force is not completely eliminated. Therefore, in view of the durability and energy saving of the driving means, sufficient consideration has not been given to the point that these performances are reduced.
An object of the present invention is to reduce the operating force of the drive unit to zero when maintaining the operation state, thereby increasing the durability of the drive unit and suppressing the energy consumption. To provide.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, an electrically controllable driving unit, a transmission path for transmitting a force of the driving unit to an operation target, and a movement of the transmission path are controlled by the driving unit and the operation target. Locking means for fixing to a base to be fixed or a member equivalent to the base.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a schematic structural view of an embodiment for operating a starting clutch of an automobile by using the operating actuator according to the present invention. The driving unit 1 is electrically controlled by a controller (not shown), generates a direct driving force, and is fixed to the base 5. The driving means may be, for example, a linear motion conversion mechanism using an electric motor, a speed reducer, and a rack and pinion, or a hydraulic source, a control valve, and a hydraulic cylinder. The output of the driving means 1 is connected to a transmission path 2, which is arranged to push a release bearing 3D of a starting clutch 3 to be operated. A moving hook 4A is rotatably attached to the transmission path 2 as a protrusion of a moving section for fixing the transmission path 2, and the moving hook 4A is held at a predetermined position by a position holding spring 4D. I have. A fixed hook 4B that engages with the moving hook when the starting clutch is disengaged is disposed as a projection of the fixed hook engaged with the fixed hook 4B. The fixed hook 4B is a position controller that controls the position of the fixed hook 4B. It is fixed to the base 5 via 4C. The movement of the transmission path 2 is input to the position controller 4C by the connecting member 4E. These moving key portion 4A, fixed key portion 4B, position controller 4C, position holding spring 4D, and connecting member 4E form a lock mechanism. Here, the start clutch is usually fixed to the engine, but this is simplified, and the start clutch is illustrated as being fixed to the base 5. Further, an input shaft and the like of the transmission connected to the starting clutch are not shown. When the release bearing 3D is pushed in, the starting clutch 3 is disengaged. FIG. 2 shows a state in which the release bearing 3D is pushed in and the clutch is disengaged. When the release bearing 3D is pushed in, the internal linkage operates, the pressing force between the flywheel 3A and the pressure plate 3B is lost, and the clutch disc 3C can rotate freely and the clutch is disengaged. Here, when the clutch is disengaged, the release bearing 3D receives a force to be pushed back by the reaction force of the spring mounted inside the clutch.
[0008]
FIG. 3 shows a state in which an operating force is generated by the driving means and the starting clutch 3 is disengaged. The transmission member 2 receives the reaction force F from the starting clutch, but the moving key portion 4A and the fixed key portion 4C of the lock mechanism are engaged with each other, and the reaction force F is held by the lock mechanism.
[0009]
FIG. 4 shows a state in which the release bearing 3D is further pushed in the direction to disengage the starting clutch from the state shown in FIG. The movement of the transmission member 2 is transmitted to the position controller 4C by the connecting member 4E, and the position controller 4C pulls the fixed key portion 4B in the direction of the arrow Y to engage the fixed key portion 4B with the moving key portion 4A. Has been released. FIG. 5 shows the relationship between the position of the transmission path 2 and the position of the fixed key portion 4B controlled by the position controller 4C. The position of the fixed key portion 4B has a characteristic that the trajectory is different between the case where the operation of disengaging the starting clutch and the case of performing the operation of connecting the starting clutch are performed with respect to the position of the transmission path 2.
[0010]
Now, the operation of the operation actuator having the above configuration will be described as follows.
When the operation of disengaging the starting clutch 3 is performed and the operation is to be maintained as it is, electric power is supplied to the driving means 1 from a controller (not shown) to generate driving force. The driving force is transmitted to the transmission path 2, which pushes the release bearing 3D of the starting clutch. A transmission key is attached to the transmission path 2 and moves along with the movement of the transmission path 2. When the transmission path advances to some extent, the moving key contacts the fixed key 4B. Here, the contact portion between the moving key portion and the fixed key portion has a slope, and the moving key portion is held by the position holding spring 4D and is rotatable. Run away. Further, when the transmission path 2 is advanced and the starting clutch is sufficiently disengaged, the projections of the movable hook portion 4A and the fixed hook portion 4B engage with each other, and shift to an engaged state (FIG. 3). In this state, even if the output of the driving means is reduced to zero, the reaction force F which the transmission path 2 receives from the starting clutch 3 is transmitted from the moving key portion to the fixed key portion and transmitted to the base 5. That is, the reaction force of the starting clutch 3 is taken over by the lock mechanism, and the state in which the starting clutch is disengaged can be maintained.
[0011]
Next, the operation of connecting the starting clutch will be described. From the state in which the starting clutch is disengaged and held as shown in FIG. 3, electric power is supplied from the controller (not shown) to the driving means 1 in the direction in which the starting clutch is disengaged, and a driving force is generated. When the transmission path 2 moves by the driving force, this movement is transmitted to the position controller 4C by the connecting member 4E. The position controller 4C is a mechanism for controlling the position of the fixed key portion 4B according to the position of the transmission path 2. When the position of the starting clutch is further advanced from the disengaged position to the disengaged direction, the fixed key portion 4B is moved in the direction of arrow Y. To release the engagement between the fixed key portion 4B and the movable key portion 4A (FIG. 4). When the output of the driving means is reduced from here, the reaction path F is pushed by the reaction force F of the starting clutch, and the transmission path 2 moves to the initial position. Here, the fixed key portion 4B is in the retracted state until returning to the initial position, the transmission mechanism is not restricted by the lock mechanism, and returns to the initial position, and the starting clutch is connected.
[0012]
As described above, according to the present embodiment, when the starting clutch is held in the disengaged state, the lock mechanism can take charge of the reaction force, and by reducing the operating force of the driving means to zero, the driving means , The energy consumption is suppressed, and an operation actuator with high durability and low energy consumption can be configured.
[0013]
Another embodiment of the present invention will be described with reference to FIGS.
FIG. 7 is a schematic structural view of another embodiment for operating a starting clutch of an automobile using the operating actuator according to the present invention. The driving unit 1 is electrically controlled by a controller (not shown), generates a driving force for rotation, and is fixed to the base 5. The driving means may be, for example, an electric motor and a reduction gear, or a hydraulic source, a control valve, and a hydraulic motor. The output of the driving means 1 is connected to the rotating link 6A, further connected to the connecting link 6B, and further connected to the transmission path 2. When the rotation link 6A rotates in the direction of the driving force T by the output of the driving means, the rotation is converted into the linear motion of the transmission path 2 through the connecting link 6B, and the transmission path 2 pushes the release bearing 3D of the starting clutch 3 to be operated. . The stopper 7 restricts the operation of the rotary link 6A at a position beyond the top dead center, and is arranged at a position restricting the rotation of the motor rotor. The starting clutch is usually fixed to the engine, but for simplicity, the starting clutch is illustrated as being fixed to the base 5. Further, an input shaft and the like of the transmission connected to the starting clutch are not shown. When the release bearing 3D is pushed in, the starting clutch 3 is disengaged. Here, when the clutch is disengaged, the release bearing 3D receives a force to be pushed back by the reaction force of the spring mounted inside the clutch.
[0014]
FIG. 7 shows a state where the driving force T is generated by the driving means and the starting clutch 3 is disengaged. The transmission member 2 receives the reaction force F from the starting clutch, but the reaction force F is not transmitted to the driving means 1 but is released to the base 5 through the stopper 7 due to the positional relationship between the rotation link 6A and the connecting link 6B. That is, the lock function is realized by the link mechanism and the stopper.
[0015]
The operation of the operation actuator having the above configuration will be described below.
When the operation of disengaging the starting clutch 3 is performed and the operation is to be maintained as it is, electric power is supplied to the driving unit 1 from a controller (not shown) to generate the driving force T. The driving force T is transmitted to the rotation link 6A and the connecting link 6B, converted to linear motion, and transmitted to the transmission path 2. The transmission path 2 pushes the release bearing 3D of the starting clutch to disengage the clutch. When the starting clutch is sufficiently disengaged, the rotating link 6A comes to a position where it contacts the stopper 7 (FIG. 7). At this position, the link mechanism is in a state exceeding the top dead center, so that the reaction force F from the starting clutch 3 is not transmitted to the driving means 1 but transmitted to the stopper 7. That is, the reaction force of the starting clutch 3 is received by the stopper 7, and the starting clutch 3 can be held in the disengaged state even when the output of the driving means 1 is set to zero.
[0016]
Next, the operation of connecting the starting clutch will be described. From the state in which the starting clutch shown in FIG. 7 is disengaged and held, electric power is supplied from a controller (not shown) to the driving means 1 in a direction in which the rotating link 6A is separated from the stopper 7 to generate a driving force. The transmission path 2 moves together with the rotation of the rotary link 6A, temporarily moves in a direction in which the starting clutch is disengaged, then reverses at the top dead center of the link, and moves in a direction for connecting the starting clutch. Thus, the transmission path 2 returns to the initial position, and the starting clutch is engaged.
[0017]
As described above, according to the present embodiment, when the starting clutch is held in the disengaged state, the reaction force can be received by the stopper provided in the link mechanism, and the operating force of the driving means can be reduced to zero. Accordingly, it is possible to increase the durability of the driving means, suppress the energy consumption, and configure the operation actuator with high durability and low energy consumption.
Another embodiment of the present invention will be described with reference to FIG.
[0018]
FIG. 8 is a schematic structural view of still another embodiment for operating a starting clutch of an automobile using the operating actuator according to the present invention. The driving unit 1 is electrically controlled by a controller (not shown) to generate a driving force, and is fixed to the base 5. The driving means may be, for example, an electric motor and a reduction gear, or a hydraulic source, a control valve, and a hydraulic cylinder. The output of the driving means 1 is connected to a transmission path 2, which is arranged to push a release bearing 3D of a starting clutch 3 to be operated. Magnetic fluid fixing means is connected to the transmission path 2. The magnetic fluid fixing means includes a fixed portion 8A, a moving portion 8C, and a magnetic fluid 8B sealed between the fixed portion 8A and the fixed portion 8C so as not to leak. The fixed portion 8A of the magnetic fluid fixing means is provided with an electromagnetic coil. When power is supplied from a controller (not shown), a magnetic field is generated in the magnetic fluid fixing means, and the magnetic fluid 8B is solidified and fixed to the moving portion 8C. The part 8A is locked. When the supply of power to the electromagnetic coil is stopped, the magnetic fluid liquefies again, and the moving unit 8C and the fixed unit 8A operate free. The starting clutch is usually fixed to the engine, but for simplicity, the starting clutch is illustrated as being fixed to the base 5. Further, an input shaft and the like of the transmission connected to the starting clutch are not shown. When the release bearing 3D is pushed in, the starting clutch 3 is disengaged. Here, when the clutch is disengaged, the release bearing 3D receives a force to be pushed back by the reaction force of the spring mounted inside the clutch.
[0019]
The operation of the operation actuator having the above configuration will be described below.
When the operation of disengaging the starting clutch 3 is performed and the operation is to be maintained as it is, electric power is supplied to the driving means 1 from a controller (not shown) to generate driving force. The driving force is transmitted to the transmission path 2, which pushes the release bearing 3D of the starting clutch. Electromagnetic fluid fixing means is attached to the transmission path 2. When the position of the transmission path 2 reaches a position where the starting clutch is sufficiently disengaged, this is detected by a sensor or the like (not shown) and the electromagnetic fluid fixing means is detected. The electromagnetic coil at the fixed part of the means is energized. The electromagnetic coil generates a magnetic field in the electromagnetic fluid fixing means, solidifies the magnetic fluid, and locks the moving unit 8C and the fixed unit 8A. In this state, even if the output of the driving means is reduced to zero, the reaction force F received by the transmission path 2 from the starting clutch 3 is transmitted to the base 5 by the electromagnetic fluid fixing means. That is, the reaction force of the starting clutch 3 is received by the magnetic fluid fixing means, and the state in which the starting clutch is disengaged can be maintained.
[0020]
Next, the operation of connecting the starting clutch will be described. In this case, the driving force of the driving means 1 is increased to a level that balances the reaction force F received from the starting clutch 3, and then the electric power supplied to the magnetic fluid fixing means is reduced to zero. The restraining force by the magnetic fluid fixing means is released, and the driving means receives the reaction force F. When the driving force is gradually reduced, the driving means moves in the direction for connecting the starting clutch. Thus, the transmission path 2 returns to the initial position, and the starting clutch is engaged.
[0021]
As described above, according to this embodiment, when the starting clutch is held in the disengaged state, the reaction force can be taken over by the magnetic fluid fixing means, and the operating force of the driving means is reduced to zero, It is possible to increase the durability of the driving means, suppress the energy consumption, and configure an operation actuator with high durability and low energy consumption.
[0022]
【The invention's effect】
According to the present invention, when the starting clutch is held in the disengaged state, the reaction force received from the starting clutch can be given to the lock mechanism, and the output of the driving means can be reduced to zero. As a result, it is possible to prevent the driving means from generating heat and the like, to increase the durability, and to provide an operation actuator with low energy consumption.
[Brief description of the drawings]
FIG. 1 is a diagram showing a schematic configuration diagram of an embodiment for operating a starting clutch of an automobile using an operation actuator according to the present invention.
FIG. 2 is a diagram showing an operation of a starting clutch to be operated.
FIG. 3 is a diagram showing a state in which the starting clutch is disengaged and held in an embodiment in which the starting clutch of the automobile is operated using the operating actuator according to the present invention.
FIG. 4 is a diagram showing a state in which a lock mechanism is released in an embodiment in which a starting clutch of an automobile is operated using the operation actuator according to the present invention.
FIG. 5 is a diagram showing position control of a fixed key portion by a position controller.
FIG. 6 is a diagram showing a schematic configuration diagram of another embodiment for operating a starting clutch of an automobile using the operation actuator according to the present invention.
FIG. 7 is a view showing a state in which the starting clutch is disengaged and held in another embodiment in which the starting clutch of the automobile is operated using the operating actuator according to the present invention.
FIG. 8 is a diagram showing a schematic configuration diagram of still another embodiment for operating a starting clutch of an automobile using the operation actuator according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Drive means, 2 ... Transmission path, 3 ... Start clutch, 3A ... Flywheel 3B ... Pressure plate, 3C ... Clutch disk, 3D ... Release bearing, 4A ... Moving key part, 4B ... Fixed key part, 4C ... Position control 4D: Position holding spring, 4E: Connecting member, 5: Base, 6A: Rotating link, 6B: Connecting link, 7: Stopper, 8A: Fixed part, 8B: Magnetic fluid, 8C: Moving part, T: Driving force , F ... reaction force.

Claims (5)

An electrically controllable driving means, a transmission path for transmitting the force of the driving means to the operation target, and a movement of the transmission system path being fixed to the driving means or the operation target to a fixed base or a member similar to the base. On the other hand, an operation actuator having a lock means for switching between fixation and release. 2. The operating actuator according to claim 1, wherein the locking means is formed by engaging a projection formed on the locking means fixing portion with a projection formed on the moving portion, and the engagement and release of the projection are fixed. An operation actuator characterized in that the position of a part, a moving part, or both protruding parts is moved and switched by operation of a transmission system path. 2. The operating actuator according to claim 1, wherein the lock means restricts rotation of the rotation shaft at a position beyond a dead point, wherein a transmission path by rotation of the shaft, a link mechanism connected to the rotation shaft, and the link mechanism exceed a dead center. An operation actuator comprising a stopper that performs a fixing function by receiving, by a stopper, a force to rotate the rotating shaft by a reaction force received from an operation target. 3. The operation actuator according to claim 2, wherein a slope is provided on the projection, and in a process in which the projection reaches the engagement, a force generated by the slope causes the projection of the fixed portion, the projection of the moving portion, or both. An operation actuator, wherein the projection moves and engages. 5. The operating actuator according to claim 1, wherein the locking unit moves the position at which the transmission path is fixed to the base or a member similar to the base in accordance with a change in the situation of the operation target. 6. Operational actuator characterized.

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