KR19980022231U - Clutch Disc Structure of Automatic Transmission Clutch - Google Patents

Abstract

The present invention relates to a clutch disk structure of an automatic transmission clutch, wherein a plurality of wave-like bends (2) are formed in the cross section of the core plate (1), and the core plate (1) in which the wave-like bends (2) are formed as described above. By providing the clutch disk structure of the automatic transmission clutch with the facing 3 on both sides of the), the wave-shaped bends 2 formed on the clutch disk can be gradually contacted and separated when the clutch disk and the clutch plate are contacted and spaced apart. By doing so, the shift shock is remarkably reduced and the impact force acting on the facing 3 can be excluded to improve the durability of the facing 3.

Description

Clutch Disc Structure of Automatic Transmission Clutch

The present invention relates to a clutch used in the automatic transmission, and more particularly, to the structure of the clutch disk of the clutch.

In general, an automatic transmission of a vehicle is composed of a torque converter, a transmission gear mechanism connected to the torque converter, and a hydraulic control circuit for selectively operating a gear of the transmission gear mechanism in accordance with the driving state of the vehicle.

Here, the transmission gear mechanism is a planetary gear device composed of a plurality of sun gears, ring gears and carriers, by appropriately controlling the rotation of the gears to convert the rotational force supplied from the turbine by the relative movement between the gears to an appropriate transmission ratio And is transmitted to the propulsion shaft, a plurality of clutches are used to control the rotation of the gears.

As shown in FIG. 1, the clutch 51 used in the automatic transmission has a width of an alternating arrangement of the clutch disc 52 and the clutch plate 53 in which the piston 51, which is provided with the hydraulic force and the elastic force of the spring 50, is disposed. The power is transmitted and interrupted by the contact friction force between the clutch disc 52 and the clutch plate 53 while being changed.

Here, looking at the structure of the clutch disk 52 as shown in Fig. 2 is a state in which a facing 55 is attached to both sides of the ring plate of the core plate 54 in contact with the clutch plate 53 to generate a friction force The face 55 is provided with a plurality of oil grooves 56 so that oil can be easily excluded during frictional contact.

The clutch disk 52 having the structure as described above has hydraulic pressure acting on the piston 51 to move the piston 51 while overcoming the force of the spring 50 supporting the piston 51. Power is connected by narrowing the distance between the clutch plate 53 and the clutch plate 53, and the hydraulic pressure that is applied is interrupted, and the piston 51 is returned by the force of the spring 50, and the distance between the clutch disc 52 and the clutch plate 53 is reduced. By this widening again, the power is cut off.

However, since the clutch plate 53 and the clutch disk 52 are in the form of a flat plate, the contact and separation of the power is instantaneous contact and separation, so that a shift shock is easily generated. There is a problem that breakage of the facing 55 occurs easily.

Therefore, the present invention has been devised to solve the above problems, and the contact and separation operation of the clutch disc and the clutch plate is in a state of gradually complete surface contact in line contact or point contact without instantaneous surface contact. The purpose of the present invention is to provide a clutch disc structure that can prevent shift shock and improve the durability of the facing.

1 is a structural diagram showing a typical automatic transmission clutch portion,

FIG. 2 illustrates the structure of a clutch disk used in FIG. 1.

2a is a plan view,

2b is a side view,

Figure 3 is a side view showing the structure of an automatic transmission clutch disk according to the present invention.

Explanation of symbols for main parts of the drawings

1: core plate

2: wavy bend

3: facing

The clutch disc structure of the automatic transmission according to the present invention for achieving the object as described above in the clutch disc structure of the automatic transmission in which the face is bonded to both sides of the core plate, the contact and spaced apart from the clutch plate on the cross section of the core plate It is characterized in that a plurality of wave-shaped bends that can provide elastic force when formed.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention.

3 is a view illustrating a clutch disc structure of an automatic transmission clutch according to the present invention, and a plurality of wave-shaped bends 2 are formed on a cross section of the core plate 1 to provide an elastic force when contacting and spaced apart from the clutch plate. As described above, the facing 3 is attached to both side surfaces of the core plate 1 on which the wave-like bends 2 are formed.

At this time, the facing 3 is bonded so that the wave-shaped bend 2 of the core plate 1 is exposed to the outside as it is, the wave-shaped bend 2 formed in the core plate 1 is the capacity of the clutch and It is to be adjusted to form according to the intended use.

Referring to the operation of the present invention configured as described above are as follows.

When the clutch is operated and hydraulic pressure is provided to the piston, the piston overcomes the force of the supporting spring and moves to narrow the gap between the clutch disc and the clutch plate.

At this time, the contact between the clutch disc and the clutch plate is narrowed as described above, and the contact between the clutch disc and the clutch plate is caused by the influence of the clutch disc formed such that the wave-shaped bend 2 is exposed to the outside of the pacing 3 as described above. Starting from the contact or the circumferential line contact, it gradually changes to the surface contact as the pressing force of the piston increases.

That is, the core plate (1) of the clutch disk is to provide an elastic force in parallel with the role of a leaf spring in a wave-like bend (2).

Therefore, the contact between the clutch disk and the clutch plate is not instantaneously brought into surface contact, but changes from point contact or line contact to progressive surface contact, so that the contact between the clutch disk and the clutch plate is completely absorbed during the shift. In this case, the shift shock is remarkably reduced, and the durability of the facing 3 is improved by reducing the instantaneous impact force acting on the facing 3.

Of course, even when the hydraulic pressure acting on the piston is released and the contact state between the clutch disc and the clutch plate is relaxed, the separation operation gradually changes from the surface contact state to the line contact and the contact point, so that smooth shift control is possible. do.

Therefore, the wave-shaped bend formed in the clutch disk as described above enables the progressive contact and separation when the clutch disk and the clutch plate are contacted and spaced, thereby significantly reducing the shifting shock and excluding the impact force acting on the pacing. There is an effect to improve the durability.

Claims (1)

In a clutch disc structure of an automatic transmission in which face surfaces are bonded to both sides of a core plate, an automatic transmission characterized in that a plurality of wave-shaped bends are formed on a cross section of the core plate to provide elastic force when contacting and spaced apart from the clutch plate. Clutch disc structure of the clutch.