KR980008723U - Disc brake - Google Patents

Abstract

The present invention relates to a disc brake, and its purpose is to reduce the braking noise by improving the front and rear guide rods to slidably fasten the housing to the carrier.

Disc brake according to the present invention is the noise to the front rear guide rods (30, 30 ') to slidably fasten the housing (10) in which the piston (20) is installed on the carrier (40) on which the pad plates (50, 60) are installed. Bushes 31 and 31 'were formed to prevent their occurrence.

Therefore, the front rear guide rods 30 and 30 'friction on the inside of the rear rear fastening grooves 41 and 41' according to the rotational torque of the disk 70 during braking when the vehicle moves forward or backward. Soft bushes 31 and 31 'are provided in each of which has an advantage of reducing friction noise.

Description

Disc brake

The present invention relates to a disc brake, and more particularly, to a front rear guide rod for slidably fastening a carrier and a housing in which a piston plate is installed.

In general, a brake mounted on a vehicle is a device for decelerating, stopping or maintaining a stopped state of a vehicle while driving. The brake that functions as this is a method of converting the kinetic energy while driving into thermal energy by mechanical friction device to release its frictional heat into the air and braking. There are a drum hydraulic brake and a disk hydraulic brake. Instead, the disk-shaped disks that rotate together with the wheels are strongly pressed with pads on both sides to obtain braking force, as shown in FIG.

As shown in the drawing, a general disc brake is largely divided into a housing 10 in which a piston 20 is installed, and a carrier 40 in which pad plates 50 and 60 are installed and fixed to a vehicle body (not shown).

The housing 10 has a cylinder 11 formed therein, and the cylinder 11 is provided with a piston 20 that moves back and forth by hydraulic pressure transmitted through the inlet 12. The front and rear fastening holes 13 and 13 'are formed at both ends of the housing 10, respectively, for fastening with the carrier 40 to be described later. Reference numeral 21 is a seal for restoring the piston 20 when the hydraulic pressure is released to the cylinder 11.

In the carrier 40, an installation groove 42 is formed in the center thereof, and the installation grooves 42 are provided with pad plates 50 and 60 with a pair of pads 51 and 61 attached thereto. The pad plates 50 and 60 are spaced apart by a predetermined interval to move forward and backward within the installation groove 42. The inner pad plate 50 and the outer pad 61 having the inner pad 51 attached to one surface thereof are It is distinguished by an attached outer pad plate 60. At this time, the other surface of the inner pad plate 50 is configured to be in contact with the piston 20 moving forward and backward. In addition, a disk-like disk 70 is inserted between the pair of pads 51 and 61 so that a part of its outer circumference is inserted and rotates together with a wheel (not shown) with a predetermined gap with the pad.

On the other hand, the housing 10, the piston 20 is installed and the carrier 40, the pad plate (50, 60) is installed is slidably coupled, the coupling structure thereof is as follows.

First, as described above, the front and rear fastening holes 13 and 13 'are formed at both ends of the housing 10, respectively, and the front and rear fastening holes 13 and 13' of the carrier 40 are opposed to each other. Both ends also have a predetermined depth of the front fastening groove 41 and the rear fastening groove 41 '. Carriers 40 fixed to the vehicle body by fastening the front and rear fastening holes 13 and 13 'and the front and rear fastening grooves 41 and 41' by using the front and rear guide rods 30 and 30 ', respectively. The housing 10 is slidably coupled thereto.

That is, one end of the front guide rod 30 is fastened to the front fastening hole 13 of the housing 10, the other end is inserted into the front fastening groove 41 of the carrier 40, the front Retreat movement according to the braking action in the fastening groove (41). In addition, the rear guide rod 30 'also has one end thereof fixed to the rear fastening hole 13' with a bolt 14 'and the other end is inserted into the rear fastening groove 41' of the carrier 40 so that the rear fastening groove ( In the 41 ').

At this time, when braking in the forward (A direction) of the vehicle, the front guide rod 30 rubs in the front fastening groove 41 to generate a fluffy noise, and the front guide rod 30 to prevent this. The other end of the soft bush 31 is fitted.

When the brake pedal (not shown) is pressed in a state in which a vehicle having a disk brake configured as described above is running, hydraulic pressure is applied from the master cylinder, which is not shown, and the hydraulic pressure is continuously applied to the cylinder 11 through the inlet 12. Is delivered to.

Therefore, by advancing the piston 20 by this hydraulic pressure, the inner pad 51 attached to the inner pad plate 50 is pressed against the disk 70 instantly. In addition, since the hydraulic pressure remains in the cylinder 11, the housing 10 itself, which is slidably fastened to the carrier 40 through the rear guide rods 30 and 30 ', moves in the opposite direction, whereby the outer pad The outer pad 61 attached to the plate 60 is pressed against the disk 70 to brake.

When the brake pedal is released, the piston 20 is restored to its original position due to the elastic force of the seal 21, so that the disk 70 and the pads 51 and 61 are spaced apart at regular intervals, and the front and rear guide rods 30 and 30 'are separated. ) Is also inserted into the front and rear fastening grooves 41 and 41 '.

On the other hand, when braking in the case where the vehicle having such a disc brake moves forward (arrow A direction), as described above, the front fastening groove of the carrier 40 on the side of the forward rotation direction (A direction) of the rotating disk 70 ( 41, the other end of the front guide rod 30 coupled to vibrate inside the front fastening groove 41 by the rotational torque of the disk 70, there is a soft bush 31 is fitted with a soft sound This does not occur.

On the contrary, when the vehicle brakes in the reverse direction (arrow B direction), the rear guide rod 30 coupled to the rear fastening groove 41 ′ of the carrier 40 on the reverse direction (B direction) side of the rotating disk 70. The other end of ') is shaken inside the rear fastening groove 41' by the rotational torque of the disk 70, so that a fluttering noise is generated.

The present invention is to solve this problem, the purpose of the present invention is to install the front and rear guide rods by sliding the bushing to the other end of the front and rear guide rods to slidably fasten the housing in which the piston is installed, the front backward To provide a disc brake that attenuates the noise generated during braking in all cases.

1 is a plan sectional view showing a general disc brake.

2 is a plan sectional view schematically showing a disc brake according to the present invention.

* Explanation of symbols for the main parts of the drawings

10: housing 13, 13 ': front and rear fastening hole

20: Piston 30, 30 ': Front, rear guide rod

31, 31 ': Front, rear bushing 40: Carrier

41, 41 ': Front and rear fastening grooves 50, 60: Pad plate

70: disk

Disc brake according to the present invention for achieving this purpose, the disk brake housing, the piston is installed in the housing to move forward and backward, a pair of pad plate with a pad actuated by the piston, the pad plate is slidably installed A disk which is partially inserted and rotated between the carrier and the pad plate, one end of which is fixedly coupled to the housing, and the other end of which is inserted into and coupled to the front fastening groove formed on the carrier of the disk in the forward rotation direction, and one end of which is fixed to the housing The other end of which is inserted into the rear fastening groove formed in the carrier in the reverse rotational direction of the disc, and the rear guide rod slidably fastens the housing to the carrier, the soft front bushing provided at the other end of the front guide rod, and the rear guide rod. With a soft rear bushing provided at the other end of the The features.

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a plan sectional view schematically showing a disc brake according to the present invention. (Because the disc brake according to the present invention is the same as the conventional component except for the structure of the rear guide rod, the same components will be briefly described using the same names and the same reference numerals.)

Disc brake according to the present invention is largely composed of a housing 10 in which the piston 20 is installed to move forward and backward, and a carrier 40 in which a pair of pad plates 50 and 60 are installed. .

In the housing 10, the piston 20 moves forward and backward in the cylinder 11 by hydraulic pressure transmitted through the inlet 12. Reference numeral 13,130g denotes front and rear fastening holes formed at both ends of the housing, and 21 denotes a seal for restoring the piston.

In the installation grooves 42 of the carrier 40 fixed to the vehicle body, pad plates 50 and 60 with pads 51 and 61 are longitudinally installed at the center thereof, and the pad plates 50 and 60 are provided. The inner pad plate 50 in contact with the piston 20, the outer pad plate 60 is spaced apart by a predetermined interval is distinguished from the outer pad plate 60. A part of the disk 70 is inserted between the pair of pad plates 50 and 60 to rotate together with a wheel (not shown) of the vehicle.

Meanwhile, front fastening grooves 41 and rear fastening grooves 41 'are formed at both ends of the carrier 40, respectively, so that the front rear fastening holes 13 and 13' and the front rear fastening grooves ( 41 and 41 ', the housing 10 is slidably coupled to the carrier 40 fixed to a vehicle body (not shown) using the front rear guide rods 30 and 30', respectively.

That is, one end of the front guide rod 30 is fastened to the front fastening hole 13 of the housing 10, the bolt 14, the other end is formed in the forward rotation direction (arrow A direction) side of the disk 70 It is inserted into the front fastening groove 41, and one end of the rear guide rod 30 'is fastened to the rear fastening hole 13' of the housing 10 by a bolt 14 'and the other end of the disk 70. Is inserted into and coupled to the rear fastening groove 41 'formed at the reverse rotation direction (arrow B direction) of the other side, and the other end of the front rear guide rods 30 and 30' according to the braking action is the front rear fastening groove 41, 41 '), the housing 10 is slidably fastened to the carrier 40 by moving forward and backward.

At this time, when braking during forward or backward movement, the other end of the front rear guide rods 30 and 30 'is in contact with the inner circumferential surfaces of the fastening grooves 41 and 41' due to the friction between the disk 70 and the pads 51 and 61. Squeaky noise is generated by friction, and soft bushes 31 and 31 'are provided at the other ends of the front rear guide rods 30 and 30' to prevent them as characteristic elements of the present invention. The bushes 31 and 31 'are divided into a front bush 31 fitted to the other end of the front guide rod 30 and a rear bush 31' fitted to the other end of the rear guide rod 30 '. The friction noise is attenuated by the bushes 31 and 31 '.

The braking action of the disc brake according to the present invention is as follows.

When the driver steps on the brake pedal (not shown) when the vehicle moves forward, hydraulic pressure is transmitted from the master cylinder (not shown) into the cylinder 11 through the inlet 12, and the piston 20 moves forward. Therefore, the pair of pad plates 50 and 60 installed in the mounting groove 42 of the carrier 40 so as to move forward and backward are advanced inward, respectively, and the disks 70 to which the pads 51 and 61 attached thereto rotate. Braking action is achieved by friction with both sides of. On the other hand, the outer pad plate 60 is friction with the disk 70 by sliding the housing 10 in the opposite direction by the hydraulic pressure remaining in the cylinder 11, the housing 10 and the carrier 40 is front rear The guide rods 30 and 30 'are coupled and slidable.

At this time, the other ends of the front rear guide rods 30 and 30 'are inserted into and coupled to the fastening grooves 41 and 41' of the carrier 40, and bushes 31 and 31 'are provided respectively. Therefore, the other ends of the front rear guide rods 30 and 30 'according to the rotational torque of the disk 70 are rubbed in the fastening grooves 41 and 41', and the soft bush 31 is a characteristic action of the present invention. , 31 ') does not generate noise due to friction.

That is, in the case of moving forward (A direction), the other end of the front guide rod 30 rubs against the front fastening groove 41, and the front bush 31 is installed to prevent the occurrence of noise, and also to reverse (B direction). ), The other end of the rear guide rod 30 'is rubbed inside the rear fastening groove 41', and the rear bush 31 'is installed to prevent the occurrence of noise. As a result, the noise generated in all cases of forward and reverse of the vehicle is attenuated.

As described in detail above, the disc brake according to the present invention constituted a bush to prevent the occurrence of noise, respectively in the front rear guide rod to slidably fasten the housing in which the piston is installed to the carrier on which the pad plate is installed.

Therefore, the front rear guide rod rubs against the front rear fastening groove according to the rotational torque of the disk during braking in the case of forward or backward movement of the car, which has the advantage of reducing friction noise by installing soft bushes respectively.

Claims (1)

A pair of pad plates 50 and 60 having a housing 10 of a disc brake, a piston 20 installed in the housing 10 and moving forward and backward, and pads 51 and 61 operated by the piston 20. ), A carrier 40 in which the pad plates 50 and 60 are slidably installed, a disk 70 partially inserted and rotated between the pad plates 50 and 60, and one end thereof to the housing 10. The front guide rod 30 is fixedly coupled and the other end is inserted into the front fastening groove 41 formed in the carrier 40 on the forward rotation direction side of the disk 70, one end of which is fixed to the housing 10 And the other end thereof is inserted into and coupled to a rear fastening groove 41 ′ formed in the carrier 40 on the reverse rotational side of the disc 70 to slidably fasten the housing 10 to the carrier 40. The rear guide rod 30 ', provided at the other end of the front guide rod 30 And a soft front bush (31) provided at the other end of the rear guide rod (30 '). ※ Note: This is to be disclosed based on the first application.