JPS627002Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a jerk-back reduction mechanism for mechanical disc brakes used in agricultural tractors and the like.

Generally, as shown in Figure 1, the brakes of agricultural tractors, etc. are
It has a pair of actuator torque pawls 2, 2 that are engaged with a torque pin 1 fixed to the rotor, and presses and brakes the disc rotor via a toggle link 4 connected to a brake actuation rod 5 linked to a brake pedal 6. A mechanical wet disc brake B equipped with an actuator 3 for the purpose of In this case, a certain amount of assembly clearance 1 is required in the axial direction of the brake actuating rod 5 between the torque pin 1 and the actuator torque pawls 2, 2, but that clearance C allows the actuator 3 to Since the brake actuating rod 5 has a degree of freedom in the axial direction, it has been a factor in causing jerking and brake noise.

The present invention was made to eliminate such factors, and an elastic body such as a spring or a ring is interposed between the torque pin and the actuator torque pawl in the axial direction of the brake actuating rod. The actuator torque pawl is brought into elastic contact with the actuator to achieve the intended purpose.

Hereinafter, the present invention will be described with reference to embodiments shown in FIGS. 2 to 4 of the accompanying drawings. Incidentally, FIGS. 2 to 4 show partially enlarged views of the vicinity of the torque pin, respectively.

Embodiment 1 As shown in FIG. 2, a spring 7 is interposed between the torque pin 1 and the actuator torque pawls 2, 2 in the axial direction of the brake actuating rod 5, so that the torque pin 1 and the actuator 3 are elastically connected. It is brought into contact with the At this time, the spring 7 may be fixed to either the actuator side or the torque pin side.

Embodiment 2 As shown in FIG. 3, a ring 8 is fitted to the portion of the torque pin 1 that engages with the actuator torque pawls 2, 2, and the torque pin 1 and the actuator 3 are connected.
are brought into elastic contact. At this time, as shown in FIG. 4, the ring groove 9 of the torque pin 1 into which the ring 8 is fitted may be formed eccentrically in the direction of the brake actuating rod. can be prevented.

As described above, the jerk-back reduction mechanism for mechanical disc brakes of the present invention has a simple structure and can not only reduce the jerk-back, minute vibrations, and brake noise transmitted from the actuator during braking, but is also inexpensive and easy to assemble. It is extremely useful.

[Brief explanation of the drawing]

FIG. 1 is an explanatory view of a mechanical wet type disc brake, and FIGS. 2 to 4 are partially enlarged views showing the jerk back reduction mechanism for a disc brake according to the present invention. 1... Torque pin, 2... Actuator torque pawl, 3... Actuator, 4... Toggle link, 5... Brake actuation rod, 6... Brake pedal, 7... Spring, 8... Ring, 9...〇Ring groove.

Claims (1)

[Claims for Utility Model Registration] (1) 1 that is engaged with a torque pin fixed to the fuselage
In a mechanical disc brake having a pair of actuator torque pawls and an actuator for pressing and braking a disc rotor via a toggle link connected to a brake actuation rod, the torque pin and the actuator torque pawl are A jerk-back reduction mechanism for mechanical disc brakes characterized by a spring interposed in the axial direction of the brake actuating rod to elastically abut the torque pin and actuator. (2) 1 engaged with a torque pin fixed to the fuselage
In a mechanical disc brake having a pair of actuator torque pawls and an actuator for pressing and braking the disc rotor via a toggle link connected to a brake actuation rod, the actuator torque pawl of the torque pin engages. This mechanical disc brake jerk reduction mechanism is characterized by a ring fitted in the part where the torque pin and actuator come into contact with each other elastically. (3) For a mechanical disc brake according to claim (2) of the utility model registration claim, characterized in that the ring groove of the torque pin into which the ring is fitted is formed eccentrically in the direction of the brake actuation rod. Shock back reduction mechanism.