KR200269000Y1 - the abrasion detection apparatus for clutch disc using torque sensor - Google Patents

Abstract

The present invention is to install the torque sensor 14 in order to measure the amount of wear of the clutch disk in the automatic transmission, and to measure the amount of wear with a certain groove between the hub (7) and the retainer (13).

In general, the clutch disc receives a constant friction force in each operation to smoothly perform the hydraulic control action for the operation of the manual valve for the hydraulic control of the automatic transmission.

Here, the torque sensor 14 is the force of the wear gap between the retainer 13 and the hub 7 according to the degree of wear of the clutch disk, the torque slippage phenomenon occurs, the degree of this force is measured here The degree of wear is measured to replace the clutch disk.

At this time, the torque sensor 14 measures the torque T generated in the retainer 13 and the force F generated in the hub 7 and provides it to the driver, thereby measuring the degree of wear of the clutch disk.

As oil entered through the oil hole of the input shaft rubs the piston, a torque sensor is installed between the retainer, which has a certain groove in the hub shaft where the clutch disk is mounted, and a groove which is grooved in a constant direction, so that the slippage of torque when the clutch disk wears If this occurs, the force F is measured to measure the degree of wear.

Description

The abrasion detection apparatus for clutch disc using torque sensor

The present invention relates to a disc wear detection device of a clutch using a torque sensor, in particular, when the torque sensor is installed between the hub and the retainer, and the difference in the rotational speed between the hub and the retainer due to the slip due to the wear of the disc, the rotation at this time The number difference is used to detect the wear of the disk.

In general, an automatic transmission uses a wet multi-plate clutch, and the wet multi-plate clutch supplies a constant hydraulic pressure determined by the hydraulic circuit of the valve body to the clutch. In the wet multi-plate clutch of the automatic transmission, torque is applied when the disc is worn. Slip phenomenon occurs, and it is difficult to check the wear of the disk, it is difficult to replace the disk at the appropriate time.

Therefore, the present invention has been devised in view of such a point, and if a torque sensor is installed between the hub and the retainer, and a slip phenomenon occurs due to the abrasion of the disk, the difference in rotation speed between the hub and the retainer at this time is determined. By measuring the degree of wear of the clutch disk by measuring, it is intended to know the disk replacement cycle.

1 is a cross-sectional view showing a part of the configuration of a typical clutch

2 is a cross-sectional view showing a partial configuration of a clutch including a disk wear detection device according to the present invention

3 is a detailed view of portion A of FIG.

<Explanation of symbols for main parts of the drawings>

1: wave spring 2: pressure plate

3: separator plate 4: snap ring

5: reaction plate 6: disc

7: hub 8: input shaft

9: oil hole 10: disc-shaped return spring

11: piston 12: seal

13: retainer 14: torque sensor

T: Torque F: Force

Hereinafter, a configuration of a disc wear detection device of a clutch using a torque sensor according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in Figure 2, the disk wear detection device of the clutch using a torque sensor according to the present invention is a wave spring (1), pressure plate (2), separator plate (3), snap ring (4), reaction plate ( 5), disk 6, hub 7, input shaft 8, oil hole 9, disk-type return spring 10, piston 11, seal 12, retainer 13, torque sensor ( 14).

Hereinafter, the operation and effects of the disc wear detection device of the clutch using the torque sensor according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a conventional technology, a general automatic transmission can be classified into a torque converter for converting rotational force, a planetary gear unit, a hydraulic control device for controlling a hydraulic line, and the planetary gear unit includes a planetary gear device, a multi-plate clutch, a brake, a circle. It consists of a one-way clutch, etc. The planetary gear device consists of sun gear, planetary gear, carrier, ring gear and brake band, and direct drive by fixing or driving one of sun gear, carrier and ring gear. ), Reduction, reverse, neutral, and over drive states.

The detailed structure of the planetary gear unit is as follows.

It consists of input shaft and ring gear, planetary pinion, multi-plate clutch, oil passage, annular piston, drum and sun gear, brake band, output shaft and planetary pinion carrier.

In order to operate this is a multi-plate clutch built into the drum, the other is to fix the drum using a brake, the other is a multi-plate clutch installed on the outside of the drum.

In addition, when the sun gear and the planetary pinion carrier are integrally fixed, a plate clutch is used between the carrier and the drum.

In addition, as in the case of the brake band and the servo, the clutch is operated using hydraulic pressure as in the case of the brake band and the servo, and when the piston moves to the left side, the clutch is compressed to integrate the sun gear and the planetary pinion carrier.

Therefore, the planetary gears are all integrated, and the input shaft and the output shaft have a gear ratio of 1: 1, and the disk of the clutch wears out due to this movement. .

In addition, the clutch disk is subjected to a constant friction force during each operation to smoothly perform the hydraulic control action for the operation of a manual valve for the hydraulic control of the automatic transmission.

Figure 3 is a detailed view showing the installation state of the torque sensor 14 according to the present invention, with a constant groove between the hub 7 and the retainer 13, the torque sensor 14 is installed here to The degree was measured.

The torque sensor 14 detects a difference in rotational speed at this time when a rotational speed difference occurs between the retainer 13 and the hub 7 due to slip phenomenon due to disk wear. By telling you the degree of disk wear, you will know when to change the disk.

At this time, the torque sensor 14 measures the torque T and the force F appearing due to the difference in the rotation speed between the retainer 13 and the hub 7 and provides it to the driver at a predetermined value, and the driver checks the indication value. You will be able to exchange the disk if necessary.

As described above, the present invention can detect the wear level of the disc using a torque sensor without the driver disassembling the clutch of the automatic transmission. It has an effect.

Claims (2)

A disc-shaped return spring for providing a compressive force to the disc, a reaction plate for supporting the disc by receiving a compressive force from the disc-shaped return spring, a disc for transmitting a force between the disc-shaped return spring and the reaction plate, and A clutch of an automatic transmission comprising a hub for supporting a disc and a retainer rotating with the hub, Disk wear detection device of the clutch using a torque sensor, characterized in that it is installed between the hub and the retainer and comprises a torque sensor for detecting the difference in rotational speed between the hub and the retainer when the slip of the torque caused by the disk wear . The disk wear detection apparatus of claim 1, wherein the torque sensor is installed to allow a sliding motion between the hub and the retainer when a torque slip occurs due to disk wear.