KR19980051910A - Electro-Hydraulic Clutch Using Planetary Gears - Google Patents

Abstract

The present invention relates to an electro-hydraulic clutch using a planetary gear, comprising a planetary gear device (11, 12, 13, 14) for receiving the power of the engine (E) to decelerate primarily, and any one of the planetary gear device It has a hydraulic control device that controls the element so that the engine power is transmitted to the transmission 1 through the planetary gear device or shuts off, and the power of the engine is interrupted only by operating the shift lever without any clutch operation. The automatic clutch function makes the operation easier.

Description

Electro-Hydraulic Clutch Using Planetary Gears

The present invention relates to an automobile clutch, and more particularly, to an electro-hydraulic clutch using a planetary gear that enables not only high efficiency and high precision clutch action using a planetary gear and a hydraulic control device but also smooth and smooth clutch operation. will be.

In general, the clutch used in a vehicle is installed between the engine and the input shaft of the transmission to control the power transmitted from the engine to the transmission as necessary, and to transmit power to the engine when starting the engine or shifting the gear of the transmission. When the engine is disconnected and the engine starts, the engine is gradually connected to the power of the engine.

The conventional clutch as described above may be classified into a friction clutch, a fluid clutch, or an electric clutch according to a structure, and may be classified into a pedal clutch or an automatic clutch according to an operation method. And dry / wet multi-plate clutches.

Here, the friction single plate clutch has a simple structure, easy maintenance and inspection, and is widely used for general automobiles. The friction single plate clutch is composed of a clutch body for controlling power and an operation mechanism for operating the clutch in the driver's seat. The main body consists of a clutch plate, a pressure plate, a clutch spring, a release lever, and the like, and is connected to a flywheel mounted on an engine output shaft, while the operation mechanism pedals the release bearing, the release fork, and the release fork. And a mechanism for transmitting the operating force of the clutch pedal to transmit the operating force of the clutch pedal to the clutch body.

8 is a schematic view of the conventional friction clutch as described above, that is, directly connected to or spaced apart from the flywheel 100 which is mounted on the output shaft of the engine and is driven to rotate the clutch shaft 101 The clutch disk 102 which transmits or cuts off), the pressure plate 103 which connects or releases the clutch disk 102 by applying pressure to the clutch disk 102 with the operating force of an operation mechanism, and this pressure plate 103 The diaphragm spring 104 which applies the force to the pressure plate 103 to always push the clutch disk 102, and receives the operating force of the pedal and presses the diaphragm spring 104 to press the clutch disk 102 to the flywheel 100. The hydraulic fork 105 is slidably mounted on the clutch shaft 101 and the pedal 106 is operated hydraulically so as to be spaced apart from the power supply. Now slide off the power to Oak 105 wihe has a structure with a release fork 105 and a release pedal cylinder 107 and master cylinder 108 is provided between (106).

However, in the friction type clutch having the structure as described above, the clutch disk is connected to the flywheel by the friction force between the clutch disk and the flywheel so that the engine power is transmitted. In addition, the operation of the clutch pedal is inconvenient, and the operation of the clutch pedal becomes inconvenient, and the sudden clutch operation of an inexperienced driver impairs the engine and shortens the service life.

Accordingly, the present invention has been made to solve all the drawbacks of the friction clutch described above, the high efficiency and high precision clutch using the planetary gear and the hydraulic control device, the clutch operation can be made smoothly and smoothly. The purpose is to provide an electro-hydraulic clutch using a planetary gear.

The present invention for achieving the above object, the planetary gear device for receiving the power of the engine primarily decelerating, and controlling any component of the planetary gear device power of the engine through the planetary gear device It is structured with hydraulic control device to be transmitted to or blocked from the transmission.

According to a preferred embodiment of the present invention, the hydraulic control device is a sun gear mounted so as to receive the power of the engine directly to the output shaft of the engine, and receives the power from the sun gear to rotate only around or at the same time the rotation of the sun gear A plurality of planetary gears meshed externally to the sun gear to revolve, a ring mounted to be selectively fixed by operation of the hydraulic control device while being inscribed with the planetary gear so as to be rotated by receiving power through the planetary gear. Gears and planetary gears connected to the transmission input shaft while integrally connecting the planetary gears to transfer the planetary gears to the transmission when a plurality of planetary gears are idled around the sun gear when the ring gears are fixed by the hydraulic control device. It has a structure with a carrier.

In addition, the ring gear is provided with a fixing means for selectively fixing the ring gear by receiving the operating hydraulic pressure of the hydraulic control device, the fixing means extends in a radial direction integrally to the outer peripheral surface of the ring gear in the circumferential direction Is equipped with a plurality of fixed brackets arranged at regular intervals, a compression rotating fan integrally formed at the tip of the fixing bracket, and a hole into which the compression rotating fan is inserted so as to be freely rotatable. A plurality of compression pistons having a hydraulic fixing device to hold the pressure of the hydraulic oil supplied from the control device, springs to elastically support the compression piston as the locking jaws are formed on the front and rear surfaces so that the compression pistons can be inserted and separated one by one It has a structure with a built-in compression cylinder.

In addition, the hydraulic fixing device receives the working pressure oil of the hydraulic control device on the inner surface of the hole formed in the compression piston through the flow passage and is pushed in the radial direction of the piston by the pressure to be integrally connected with the compression rotating fan to fix it. The compression holder is divided into two pieces and has an arc shape, and a tension spring that elastically supports the compression holder.

On the other hand, the hydraulic control device is such that the hydraulic oil discharged and supplied by the pump is supplied to the compression piston through a linear proportional control valve, the linear proportional control valve is controlled by the controller according to the signal of the shift detection means the pump The amount of pressurized oil supplied to the compressed piston is varied.

In addition, the pressure oil supply line is connected to the oil tank through the solenoid valve which is turned by the controller, when the clutch is dropped, the solenoid valve is operated by the controller to quickly drain the pressure oil supplied to the compression piston to the oil tank. It is meant to be given.

According to the present invention having the above structure, by detecting the operation of the shift lever by the controller to selectively fix the ring gear of the planetary gear device via the hydraulic control device to automatically control the power of the engine, smooth clutch operation This is achieved and the operation operation becomes convenient.

1 is a schematic configuration diagram of an electro-hydraulic clutch using a planetary gear according to the present invention,

2 is an exploded perspective view of the planetary gear device according to the present invention;

3 is a cross-sectional view taken along the line A-A of FIG.

4 is a cross-sectional view taken along line B-B of FIG. 3;

5 is a perspective view of a compression piston according to the present invention,

6 is a cross-sectional view taken along the line A-A of FIG.

7 is a hydraulic circuit diagram of a hydraulic control apparatus according to the present invention;

8 is a schematic cross-sectional view of a friction clutch according to the prior art.

Explanation of symbols on the main parts of the drawings

1-transmission 2-output shaft

3-clutch 11-sun gear

12- Planetary Gear 13-Ring Gear

14-Planetary Gear Carrier 20-Bracket

21-compression rotary fan 22-compression piston

22a-hole 22b-distribution path

23-compression cylinder 23a-locking jaw

23b-spring 24-compression holder

25-tension springs 26-housing

27-piston ring 30-oil tank

31-pump 32-controller

33-linear proportional control valve 34-solenoid valve

35-Relief Valve 36-Check Valve

37-check valve 38-relief valve

39-check valve 40-counter balance valve

L1-Supply Line L2-Drain Line

E-engine

1 is a schematic configuration diagram of an electro-hydraulic clutch using a planetary gear according to the present invention, that is, an output shaft 2 of the engine E to selectively supply the power of the engine E and supply it to the transmission 1. In addition, the clutch 3 is connected to receive power, and the output shaft 3a of the clutch 3 is connected to transmit power to the transmission 1.

Here, the clutch (3) according to the present invention is a planetary gear device that receives the power of the engine primarily deceleration, and controls any component of the planetary gear device so that the power of the engine is transmitted through the planetary gear device (1). It is composed of hydraulic control device to be delivered or blocked.

Figure 2 shows a planetary gear device according to the present invention, the sun gear 11 and the sun gear 11 is mounted so that the power of the engine can be directly transmitted to the output shaft (2) of the engine (E); A plurality of planetary gears 12, which are externally engaged with the sun gear 11 so as to rotate only by rotating power or rotate around the sun gear at the same time as the rotation, receive power from the planetary gears 12 as a medium. A ring gear 13 which is inscribed with the planetary gear 12 so as to be rotated, and which is selectively fixed by the operation of the hydraulic control device, the ring gear 13 being fixed by the hydraulic control device The planetary gear carrier 14 connected to the transmission input shaft while integrally connecting the planetary gears 12 to transfer the planetary gears 12 to the transmission 1 when the planetary gears 12 are idled around the sun gear 11. With structure .

In addition, the ring gear 13 is provided with a fixing means for selectively fixing the ring gear 13 by receiving the hydraulic pressure of the hydraulic control device, the fixing means is a cross-sectional view in FIGS. As shown in FIG. 3, the plurality of fixing brackets 20 are radially integrally extended to the outer circumferential surface of the ring gear 13 and arranged at regular intervals in the circumferential direction, as shown in FIGS. 3 and 4. As shown in detail in FIG. 5, a compression rotation fan 21 integrally formed at the distal end portion of each of the fixing brackets 20 and a hole into which the compression rotation fan 21 is inserted to be freely rotatable. 22a) and a plurality of compression pistons 22 having a hydraulic fixing device for holding the compression rotary fan 21 to the pressure of the hydraulic oil supplied from the hydraulic control device, and the compression pistons 22 are inserted and separated one by one. Not As the pawls (23a) are formed on front and rear surfaces so that there is a spring (23b) structure with a compression cylinder 23 with a built-in support for the compression piston 22 in the elastic.

The hydraulic fixing device receives the operating pressure oil of the hydraulic control device through the flow passage 22b on the inner surface of the hole 22a formed in the compression piston 22 as shown in detail in FIGS. 3 and 5. The compression holder 24 which is pushed in the radial direction of the piston by the pressure and is divided into three to be integrally connected and fixed to the compression rotation fan 21 and forms an arc shape, and the compression holder 24 elastically As shown in FIG. 6 to support the tension spring 25, the compression cylinder 23 is formed inside the ring-shaped housing 26 surrounding the compression piston 22. As shown in FIG. .

And the piston ring 27 is installed on the outer circumferential surface of both ends of the compression piston 22 to block the pressure oil flowing into the compression piston 22 so as not to enter the inner both front end spaces of the housing 26, The oil filled in both front end spaces of (26) is prevented from flowing into the compression piston (22).

Here, the hydraulic control device, as shown in Figure 7, the oil is stored in the oil tank 30, the pump 31 is connected to supply the pressure oil, the pressure oil pumped from the pump 31 is The compression piston 22 is supplied to the compression piston 22 through a linear proportional control valve 33 controlled by the controller 32 having a shift sensing means, and the compression piston 22 is controlled in the direction controlled by the controller 32. It is connected to the oil tank 30 through the solenoid valve 34.

In addition, a relief valve 35 is provided between the hydraulic oil supply line L1 and the drain line L2 to protect the circuit, and when the peak pressure occurs in the hydraulic oil supply line L1, the outlet of the pump 31 is discharged. The check valve 36 is installed in parallel with the linear proportional control valve 33 to circulate toward the other side, while the drain valve L2 is provided with a check valve 37 to prevent backflow.

In addition, oil is filled in the front and rear spaces of the compression piston 22 that performs the reciprocating piston movement inside the housing 26, and the left and right spaces of the housing 26 filled with the oil provide a counterbalance valve 40. The oil is circulated through the counter balance valve 40 to circulate the left and right spaces of the housing as the compression piston 22 performs the piston reciprocating motion in the housing 26. In addition to cushioning the shock caused by the piston movement of the piston 22, the compression piston 22 is to be stopped without changing the position in the fixed position.

Hereinafter, the operation and effects of the electrohydraulic clutch using the planetary gear according to the present invention will be described.

While the vehicle is traveling, the controller 32 detects that the controller 32 is running through the vehicle speed sensor and applies a predetermined control current to the linear proportional control valve 33. Thus, the linear proportional control valve 33 is predetermined. When the control current is applied, the flow path of the valve is opened, and thus, the pressure oil pumped from the pump 31 is supplied to the compression piston 22 through the linear proportional control valve 33. 31) When abnormal pressure is applied to the pressure oil supply line while the pressure oil is supplied, the pressure oil is drained to the tank 30 through the relief valve 35 or the check valve 36.

The pressure oil supplied to the compression piston 22 is introduced into the compression piston 22 through the flow passage 22b, and the compression holder 24 is pushed in the radial direction of the piston by the pressure, so that the ring gear 13 and By slip control or complete fixation control of the compression rotary fan 21 which is being rotated integrally, the ring gear 13 which was eventually rotating is fixed by the hydraulic fixing device.

At this time, if the compression rotary fan 21 is slip-controlled or completely fixed control, the compression piston 22 is a slide movement in the housing 26 integrally with the compression rotary plate 21, accordingly the housing ( The oil filled in the right end space of the right side 26 is pressurized to a predetermined pressure and when the oil reaches a predetermined pressure or more, the oil is introduced into the left end space of the housing 26 through the counter balance valve 40. It absorbs the shock in the hydraulic circuit due to the piston movement, and at the same time, the compression piston 22 is stopped in place or pushed without repulsion.

When the ring gear 13 is fixed by the hydraulic fixing device as described above, the rotational power of the sun gear 11 which is connected and rotated integrally with the engine is transmitted to the plurality of planetary gears 12 and the planetary gears 12 are The planetary gear carrier 14 which rotates while being engaged with the sun gear 11 and rotates around the sun gear 11 is connected to the planetary gear carrier 12. The rotation speed is relatively lower than the speed.

Therefore, since the planetary gear carrier 14 is integrally connected to the input shaft of the transmission, the transmission remains in a state in which the rotational power of the engine is transmitted through the planetary gear carrier 14, thereby shifting the transmission lever by the driver. In this state, the car runs.

On the other hand, when the driver operates the shift lever, the controller 31 senses this by means of a contact switch on a shift detection means, for example, a shift lever, and cuts off the control current applied to the linear proportional control valve 33 to provide a pump ( At the same time, the pressure oil pumped at 31 is not supplied to the compression piston 22, and at the same time, a predetermined control current is applied to the directional control solenoid valve 34 to open the valve so that the oil pressure in the compression piston 22 is increased. Drain quickly.

That is, when the pressure of the hydraulic oil is lowered because the pressure oil is no longer supplied to the compression holder 24 embedded in the compression piston 22, the compression holder 24 is in the original position by the elastic restoring force of the spring 25. While returning to the compression rotary fan 21 and spaced apart at the same time as the return movement of the compression holder 24, the pressure oil in the compression piston 22 is released from the compression piston 22 through the direction control solenoid valve 34 oil tank ( 30).

When the compression holder 24 is spaced apart from the compression rotation fan 21 as described above, the compression piston 22 is pushed to its original position by the elastic restoring force of the spring 25, and the compression rotation fan 21 is compressed. In addition to being freely rotatable as it is released from the holder 24, the ring gear 13 integrally connected with the compression rotary fan 21 is also freely rotatable.

Accordingly, when the sun gear 11 directly receiving the engine's power is rotated, the plurality of planetary gears 12 in which the sun gear 11 is externally engaged are also rotated by the rotational power of the sun gear 11. Since the planetary gears 12 are meshed with the ring gear 13 again, the planetary gears 12 are engaged between the sun gear 11 and the ring gear 13 as the ring gear 13 is also freely rotated. In this state, only the rotation is performed and no revolution is performed. Therefore, the planetary gear carrier 14 which integrally connects the planetary gears 12 does not receive any power and is not rotated. The power of the engine is not transmitted to the transmission configured to receive power from (14).

That is, since the power of the engine is cut off by the planetary gear device of the clutch and is not transmitted to the transmission, a smooth shift operation can be made when the driver shifts the shift via the shift lever.

Then, after the shift is made by the shift lever operation of the driver while the engine power is shut off by the planetary gear device as described above, the controller 32 again blocks the control current applied to the solenoid valve 34 so that the valve Is closed so that the hydraulic oil cannot be drained to the oil tank through the drain line, and at the same time, a predetermined control current is applied to the linear proportional control valve 33 to allow the clutch to be connected again in the above-described operation so that the engine power is applied to the clutch. Through the transmission.

As described above, the clutch according to the present invention does not perform a separate pedal operation, and the driver merely operates the shift lever to momentarily shut off the power of the engine at the moment of operation of the shift lever to achieve a smooth shift operation. By connecting the power of the engine again to be transmitted to the transmission to function as an automatic clutch, and to control the power of the engine is smoothly made by the planetary gear device and the hydraulic control device so as not to overload the engine, Since clutch operation is unnecessary, operation operation becomes convenient.

As described above, the electro-hydraulic clutch using the planetary gear according to the present invention includes a planetary gear device which is directly connected to the engine to control the engine power and a hydraulic control device that controls the planet gear device. Engine control is instantaneously interrupted only by shift lever operation, and smooth clutch operation is made automatically.

Claims (7)

The planetary gear unit that receives the power of the engine E and decelerates primarily, and any component of the planetary gear unit is controlled so that the engine power is transmitted to the transmission 1 through the planetary gear unit or shut off. Electro-hydraulic clutches using planetary gears with hydraulic controls. 2. The sun gear 11 according to claim 1, wherein the hydraulic control device is mounted on the output shaft 2 of the engine E so as to receive power directly from the engine, and rotates by receiving power from the sun gear 11. A plurality of planetary gears 12 externally engaged with the sun gear 11 so as to revolve around the sun gear at the same time as the rotation or rotation, and the planetary gears can be rotated by receiving power through the planetary gear 12. 12) a ring gear 13 mounted in such a manner as to be selectively fixed by operation of the hydraulic control device, the ring gear 13 is fixed by the hydraulic control device such that a plurality of planetary gears 12 are sun gears. (11) characterized in that the planetary gear carrier 14 is connected to the transmission input shaft while integrally connecting the planetary gears 12 so as to transfer the air power of these planetary gears to the transmission 1 when idled around. Planetary gear Using electro-hydraulic clutch. According to claim 2, wherein the ring gear 13 is provided with a fixing means for selectively fixing the ring gear 13 by receiving the hydraulic pressure of the hydraulic control device, the fixing means is the ring gear (13) A plurality of fixed brackets 20, which are integrally extended in the radial direction to the outer circumferential surface thereof and arranged at regular intervals in the circumferential direction, and a compression rotary fan 21 integrally formed at the distal end of the fixed bracket 20, A plurality of hydraulic fixing devices are provided with a hole 22a through which the compression rotary fan 21 is inserted to be freely rotatable, and to hold the compression rotary fan 21 to the pressure of the hydraulic oil supplied from the hydraulic controller. Compression piston 22, the engaging piston 23a is formed on the front and rear surfaces so that the compression piston 22 is inserted one by one so as not to be separated, the spring 23b is embedded to elastically support the compression piston 22 Compressed cylinder Electro-hydraulic clutch using a planetary gear, characterized in that the structure having a further (23). According to claim 3, wherein the hydraulic fixing device is supplied to the inner surface of the hole (22a) formed in the compression piston 22, the operating pressure oil of the hydraulic control device through the flow passage 22b is pushed in the radial direction of the piston at that pressure A structure having a compression holder 24 which is divided into three to form an arc and connected to the compression rotary fan 21 to form an arc, and a tension spring 25 that elastically supports the compression holder 24. Electro-hydraulic clutch using a planetary gear, characterized in that. The hydraulic oil pressure control device according to any one of claims 1 to 4, wherein the hydraulic control device is connected so that the pump 31 pumps the oil stored in the oil tank 30 to supply the pressure oil, and the pressure oil pumped by the pump 31. Is supplied to the compression piston 22 which is configured to reciprocate the piston movement in the housing 26 through a linear proportional control valve 33 controlled by a controller 32 having a shift sensing means, while the compression piston 22 Electro-hydraulic clutch using a planetary gear, characterized in that the pressure oil supplied to the drain to the oil tank 30 through the direction control solenoid valve 34 is controlled by the controller (32). 6. The relief valve (35) is installed between the hydraulic oil supply line (L1) and the drain line (L2) of the hydraulic control device to protect the hydraulic circuit, and the hydraulic oil supply line (L1) has a peak. A check valve 36 is installed in parallel with the linear proportional control valve 33 to circulate the pressurized oil to the outlet of the pump 31 when pressure is generated, and the drain line L2 is checked to prevent backflow. Electro-hydraulic clutch using a planetary gear, characterized in that the valve 37 is installed. According to claim 5, The front and rear end inner space portion of the housing 26 is filled with oil and the front and rear end inner space portion of the housing 26 is connected to the distribution path through the counter balance valve 40, The compression piston As the piston 22 reciprocates in the housing 26, the oil of the housing 26 flows into the inner space portion opposite to the housing 26 through the counterbalance valve 40. Electro-hydraulic clutch using planetary gear.