KR200242568Y1 - Driving structure of automated clutch system for manual transmission vehicles - Google Patents

Abstract

The present invention solves the overload applied to the drive motor by interposing a coil spring in the drive structure of the automated clutch drive motor for a manual transmission vehicle, thereby improving the quick and smooth drive signal response of the automated clutch drive. It relates to a drive structure of the drive unit.

In the drive structure of the automatic clutch drive unit for a manual transmission vehicle of the present invention, a cylindrical fixing portion 13B, into which a rotating shaft 12A of a clutch driving motor 12 is inserted and coupled, extends in a central portion of a drum body rear surface 13A, and a drum body. The outer peripheral surface 13C of the clutch drive drum 13 to which the connecting means 15 connected to the clutch pedal is attached, and the cylindrical fixing portion 13B formed at the center of the rear surface of the clutch drive drum 13A is inserted into the inner diameter. And straightened one end 14A is fixed to an insertion hole formed in the rear surface of the drum body 13A, and the other end 14C having a ring shape extends to the outer surface of the clutch drive motor 12 housing. The coil spring 14 is inserted into the outer circumferential surface and the clutch driving motor 12 is inserted into and coupled to the cylindrical fixing portion 13B and rotates the clutch driving drum 13.

The drive structure of the automatic clutch drive unit for a manual transmission vehicle of the present invention can smoothly operate the clutch pedal while using a small motor by using a coil spring, thereby eliminating the troublesome clutch pedal malfunction of the automation device of the conventional manual transmission vehicle. But its installation, maintenance and repair is easy and economical advantages.

Description

Driving structure of automated clutch drive for manual transmission vehicles

The present invention relates to a drive structure of an automatic clutch drive unit for a manual transmission vehicle, and more particularly, when a gear shift is required, such as when starting, starting, or accelerating and decelerating in a manual transmission vehicle, the driver should step directly on the clutch pedal. In order to solve the overload applied to the drive motor by interposing the coil spring in the drive structure of the automatic clutch drive motor which is automatically driven by detecting the position signal of the accelerator pedal and the electric signals output from the brake pedal and the vehicle speed signal generator. It relates to a drive structure of the automatic clutch drive unit for a manual transmission vehicle that improves the quick and smooth drive signal response of the clutch drive unit.

A vehicle moving by the rotational force of the engine converts the rotational force of the engine into a proper speed and force required by the vehicle, that is, a wheel, through a multi-stage gear system in order to effectively use the rotational force of the engine.

The multi-stage gear system currently consists of a gear system consisting of five gears, one gear and five gears, one reverse gear, and six gears in total, and gears for the engine speed of each of five forward gears. The ratio decreases as the gear shifts from the lower gear to the higher gear, and the gear ratio of the fifth gear, commonly referred to as the over drive gear, is less than 1.0.

In other words, when driving with the 5th gear, the wheel speed of the car is faster than the engine speed, so it consumes less fuel, but when the torque is needed, such as climbing the hill, it is difficult to climb the hill. do.

As described above, as the gear shifts from the lower gear to the higher gear, the gear rotation, that is, the rotation speed of the wheel, becomes faster and the rotation force becomes smaller in inverse proportion to the rotation speed. Therefore, the gears must be changed in accordance with the driving conditions of the vehicle, and in order to convert the gears, the gears must be temporarily interrupted to stop the rotation of the gears.

As described above, in order to temporarily stop the rotation of the gear, a power transmission / disengagement device is mounted between the engine and the gear system, and is largely classified into a manual transmission and an automatic transmission according to the power transmission / disconnection and the gear shifting method.

The automatic transmission consists of a torque converter, a planetary gear, a gear, and a hydraulic circuit, and the torque converter is a kind of closed chamber, which has two impellers adjacent to each other in close proximity to each other. ) Is sealed in a state filled with oil, one of the impellers (hereinafter referred to as 'drive impeller') is connected to the output side of the engine, the other (hereinafter referred to as 'manual impeller') is connected to the planetary gear.

In the transmission of engine power by the automatic transmission, rotational force is generated in the oil filling the torque converter by the driving impeller rotating together with the rotation of the engine, and the rotational force of the oil rotates the manual impeller to transmit power. Indirect delivery method.

In addition, the shaft of the manual impeller is to operate the hydraulic pump of the planetary gear unit and the hydraulic circuit unit bar, the required gear is selected according to the variable circuit through which the automatic gear oil flowing by the hydraulic pump flows, the planetary gear unit is the torque and speed of the gear It changes the back and transmits power to the wheel side.

The automatic transmission operating as described above ensures maximum operator convenience, but is not only expensive but the structure is very complicated including various precision gears with various sensors and hydraulic systems. Indirect power transmission by oil means that the engine power is always transmitted even when the vehicle is stopped.

In other words, the power transmitted from the engine is forcibly suppressed even when the vehicle is stopped, and the power transmission loss due to indirect power transmission by the fluid cannot be prevented even when the vehicle is in operation. This has a lot of drawbacks.

In particular, in spite of the convenience of driving operation, the indirect power transmission method by oil reduces the acceleration capability compared to the manual direct power transmission method by the clutch disc, and therefore, a vehicle or a sports car purchased by a younger person who enjoys a sense of speed and acceleration The manual transmission is still mainly applied to the back.

Unlike the automatic transmission, the structure is relatively simple and direct power transmission method, which requires less purchase and maintenance cost, and the fuel economy manual transmission is composed of two parts, the clutch part and the gear part. The direct power transmission system receives power by directly contacting one side of a disc-shaped fly wheel directly connected to the crankshaft of the engine. In order to convert gears, the clutch disc is separated from the contact surface of the flywheel to change the gear. The power transmitted from the drive must be temporarily interrupted and the driver must step on the clutch pedal which is connected to the clutch.

In addition, in order for the clutch disk to receive power without loss from the flywheel, slip that may occur at the mutual contact surface of the clutch disk and the flywheel should be prevented, since the mutual contact surface pressure between the clutch disk and the flywheel must be very large. Unlike a smoothly actuated accelerator pedal to remove the clutch disc from the flywheel, some force must be applied to move the clutch pedal.

Therefore, when the vehicle needs to be repeatedly used while standing, the driver may not only put pressure on the feet and legs, but also the driver who is inexperienced in clutch pedal operation may turn off the vehicle or change the vehicle. The shifting shock is applied to the vehicle so that the vehicle cannot proceed smoothly.

In addition, excessive use of the anti-clutch by frequent contact / disengagement of the clutch disc and the flywheel and immature clutch pedal operation may cause excessive slip between the clutch disc and the flywheel mutual contact surface, resulting in rapid wear of the clutch disc. This leads to a loss of power transmission, which leads to premature replacement of the clutch disc in the event of low or severe acceleration.

As mentioned above, in order to integrate only the advantages of automatic and manual transmissions, each of which has advantages and disadvantages, an automatic system of clutch pedal operation is attached to the manual transmission system to maintain high fuel economy, low maintenance cost and acceleration performance unique to the manual transmission. Similarly, automatic control systems for manual transmission clutches that can be switched manually without using a clutch pedal have been developed in various forms.

Among them, Korean Patent Publication No. 209496 discloses a device for driving a clutch system mechanically, in which power to operate the clutch is supplied by a small motor such as a vehicle wiper motor.

That is, the clutch pedal is automatically operated without the driver stepping by directly connecting the rotary shaft of the small motor such as the vehicle wiper motor and the clutch pedal with a connecting means such as a wire or a chain and controlling the forward / reverse rotation of the motor. Doing.

However, a manual transmission vehicle requires some force to fully press the clutch pedal. Although the hydraulic clutch operates with less force than the mechanical clutch, unlike the accelerator pedal, the clutch pedal requires proper force to operate the clutch pedal so that the driver's leg hurts when the clutch pedal is continuously pressed or repeatedly pressed.

Therefore, when the rotational force of such a small motor is used as a power source, a series of operations in which the torque of the motor is small and the clutch pedal is pressed by pulling wires connected to the clutch pedal is not smooth, so that the gear shifting is also appropriate. Will not be done in. In other words, there is a problem that the starting of the clutch is not matched and the timing of the shift timing does not coincide, so that the start is turned off or the shift shock is large.

And, in order to solve the above problems, there is a problem in that the manufacturing cost of the automated clutch drive unit increases when a high performance small motor having high torque is realized.

As described above, in order to solve the problem of the clutch drive unit of the conventional clutch transmission system of the manual transmission vehicle, the present invention uses a general small motor, such as a wiper motor, while still allowing a smooth clutch operation. It is an object of the present invention to provide a drive structure of.

1 is an exploded perspective view of a drive structure of the present invention.

Figure 2 is a side view of the combination of the drive structure of the present invention.

3 shows a concept of a coil spring mounting method,

(A) A perspective view of a coil spring without an external load applied thereto;

(B) is a perspective view of a coil spring in a state where a load is applied in the direction of unwinding the coil shape.

((Explanation of symbols for main part of drawing))

11. Casing 12. Clutch Drive Motor

13. Clutch driven drum 14. Coil spring

15. Connecting means of clutch pedal / clutch drive drum

The above object of the present invention is achieved by a coil spring having a suitable elastic force.

The coil is formed on the rear surface of the clutch drive drum used in the drive structure of the automatic clutch drive unit for a manual transmission vehicle of the present invention, and the cylindrical fixing portion to which the rotary shaft of the clutch drive motor is inserted and coupled is inserted into the inner diameter portion of the coil spring. One end of the spring is fixed to the housing of the clutch drive motor, and the other end is fixed to the clutch drive drum which is fixed while being fitted to the rotary shaft of the clutch drive motor.

That is, the coil spring used in the drive structure of the present invention serves to smoothly assist the rotation of the small motor for driving the clutch by transmitting the elastic force retained to the clutch drive drum.

In addition, since the coil does not act as a buffer for linear motion but as an auxiliary role for rotational force, the mounting method is different from the general coil spring mounting method.

That is, in a state where the clutch pedal is not depressed, the coil spring mounted between the clutch drive motor and the clutch drive drum is in an extended rotation state, and has a state of elastic rotation force to return to the original state.

As described above, mounting the initial mounting state of the coil spring in the extended rotational state, rather than the unloaded coil spring state, requires a lot of force to press the clutch pedal, and the pressed clutch pedal is not pressed. This is because the operation of returning to the initial state can be done with little force.

That is, when the clutch pedal is pressed, the torque of the clutch drive motor needs to be larger than that on the contrary.

Details of the technical configuration and specific characteristics of the drive structure of the automated clutch drive unit for a manual transmission vehicle of the present invention will be clearly understood by the following description with reference to the accompanying drawings.

1 is an exploded perspective view of the drive structure of the present invention, Figure 2 is an assembled side view.

As shown, the drive structure of the present invention, through the coupling hole (G) of the bottom surface of the casing 11 attached to the clutch position detection sensors (not shown) therein, and the rotary shaft of the clutch drive motor 12 ( A cylindrical fixing portion 13B, into which 12A is inserted and coupled, extends to the center portion of the drum body rear surface 13A, and is connected to the clutch pedal via a casing 11 side connection hole 11C on the outer peripheral surface 13C of the drum body. Clutch drive drum 13 to which the connecting means 15 are attached, and one end portion 14A that is straightened in a state where it is fitted in the outer peripheral surface of the cylindrical fixing part 13B formed at the center of the clutch drive drum back surface 13A is formed in a drum. The other end 14C having a ring shape is fitted to the outer circumferential surface of the fixing bracket 12B formed on the outer surface of the clutch drive motor 12, and is fixed to an insertion hole (not shown) formed on the main body rear surface 13A. Coil spring 14 fixed and upper Coupling is inserted into the fixing part (13B) of the cylinder inserted into the inside diameter portion of the coil spring, and is composed of a clutch drive motor 12 for rotating the clutch driving drum 13.

3 is a conceptual view of a spring installation method used in the present invention drive structure, when the spring is mounted on the clutch drive drum and the clutch drive motor, the rotational position of the clutch drive drum is not pressed, and the clutch pedal is not pressed. In the adjusted state, it is important to mount the coil spring 31 in the initial state without external load to the coil spring 31 'having one end rotated in the direction in which the coil form is released. Looking at how the drive structure of the automated clutch drive unit for a manual transmission vehicle constructed as described above is operated, the vehicle speed of the vehicle and the position of the accelerator pedal and the brake pedal of the vehicle in the clutch automation system of the manual transmission vehicle are automatically controlled by the converted electric signals. When the driven clutch drive motor is operated, the rotating shaft of the clutch drive motor The rotational motion of the motor is converted into linear motion by the coupling means for coupling the clutch pedal and the outer circumferential surface of the clutch drive drum, which is forward and reverse rotation, to automatically operate the clutch pedal. Since the clutch drive motor uses a small motor such as an automobile wiper motor, it is difficult to operate the clutch pedal because the torque of the motor is small, i.e., when the clutch pedal is returned to its original position, which is not pressed, the clutch pedal It is only necessary to remove the external force exerted on the clutch pedal. However, when the clutch pedal is pressed, considerable force must be applied to the clutch pedal because the clutch disc that is pressed against the surface of the flywheel must be removed. To reduce this force, the clutch pedal is equipped with a hydraulic system so that the clutch pedal can be operated with less force, but still requires some force. Therefore, the coil spring is released by applying a force within the elastic range. When both ends of the coil spring are fixed to the housing of the clutch drive drum and the clutch drive motor in which the cylindrical fixing part is inserted in the inner diameter of the coil spring in a state in which both ends are rotated in the direction to impart a resilient force to be elastically restored to its original state, The rotational force imparted to the coil spring becomes a rotational force for rotating the clutch drive drum, and the clutch drive motor when the clutch pedal is operated by matching the rotational direction of the rotational force with the rotational direction of the clutch drive motor required to press the clutch pedal. Torque by the coil spring to the torque of In addition, the clutch pedal can be operated smoothly.

That is, when the clutch drive drum and the coil spring and the clutch drive motor are assembled as described above, the clutch drive drum and the clutch drive motor are in a state in which a rotational elastic force that the coil spring is to return to the initial state is applied to. It reduces the rotational force of the clutch drive motor required to rotate the clutch to facilitate the operation of the clutch drive drum.

As described above, in order to automate a manual transmission vehicle, the automatic operation of the clutch pedal is essential. The drive structure of the automatic clutch drive unit for the manual transmission vehicle of the present invention uses a coil spring to operate the clutch pedal while using a conventional small motor. Since it can be operated smoothly, not only the troublesome clutch pedal malfunction of the automation apparatus of the conventional manual transmission vehicle is eliminated, but also it is very economical because it uses a relatively inexpensive coil spring.

In addition, the drive structure of the present invention has the advantage of easy installation, maintenance and repair because it uses a coil spring.

Claims (1)

In the automatic clutch device for the automatic transmission of the manual transmission vehicle, the rotary shaft 12A of the clutch drive motor 12 is inserted through the coupling hole (G) of the bottom of the casing (11) with the clutch position sensing sensors therein. The cylindrical fixing portion 13B to be coupled extends to the central portion of the drum body rear surface 13A, and the clutch drive drum 13 to which the connecting means 15 connected to the clutch pedal is attached to the outer peripheral surface 13C of the drum body. ; The cylindrical fixing portion 13B formed at the center of the clutch driving drum rear surface 13A is inserted into the inner diameter portion, and the straight end portion 14A is fixed to the insertion hole formed at the drum body rear surface 13A, and has a ring shape. The other end portion 14C of the coil spring 14 is fixed while being fitted to the outer circumferential surface of the fixed bracket 12B formed on the outer surface of the clutch drive motor 12; And a clutch driving motor 12 which is inserted into and fixed to the cylindrical fixing portion 13B on the rear surface of the clutch driving drum inserted into the inner diameter portion of the coil spring 14 and rotates the clutch driving drum 13. A drive structure of an automatic clutch drive unit for a manual transmission vehicle.