JPS5842374B2 - How to install a two-part disc rotor for vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a method for attaching a two-part disc rotor mainly used in large vehicles such as railway vehicles.

This type of disc rotor is usually assembled on the inside of the axle wheel, and the assembly is usually done by inserting the center opening from the end of the axle, so the disc rotor When replacing the wheel, it was necessary to remove the wheel.

However, the total weight of railway vehicles and the like is extremely large, and removal of the wheels has been difficult except in factories equipped with high-output suspension devices (cranes, etc.).

The present invention solves these problems by making the disc rotor a split type so that it can be attached to and detached from the axle without requiring the removal of the wheel. This prevents the decline.

In other words, the disc rotor is divided into two parts along a diameter line including the axis, and each of these two parts is connected by bolting through an auxiliary member (an annular retaining ring). The strength of the bolt fastened portion is ensured by ensuring that the auxiliary member, rather than the bolt, receives the force that tends to cause these divided pieces to separate to the opposite radial sides due to the centrifugal force that sometimes occurs. be.

The present invention will be explained based on the embodiments shown in the drawings.
In the figure and FIG. 2, 1 is a disc rotor,
A disk with a through hole 2 in the center is 2 along a diameter line including the axis.
It consists of divided pieces 3 and 4.

Further, each piece 3, 4 forming the disc rotor 1 is formed with a trapezoidal semicircular stepped thick wall portion 5, 6 having a somewhat larger diameter than the through hole 2, and these stepped wall thicknesses are Part 5
, 6 form a circular thick portion when the pieces 3 and 4 are combined.

Reference numeral 7 denotes a circular retaining ring having a U-shaped cross section and serving as an auxiliary member, and a through hole 8 having the same shape as the through hole 2 of the disc rotor 1 is formed in the center thereof.

This retaining ring 7 has an outer peripheral flange portion 9 that engages with the shoulder portions of the stepped thick portions 5 and 6 of each of the disk rotor pieces 3 and 4, and is secured to the disk rotor capacity 3 by bolts 10 and nuts 11 as shown. , 4 and the retaining ring 7 are connected in the axial direction.

12 is a rotation stopper for the bolt 10 and nut 11.

These bolts 10, nuts 11 and lock washers 12
A plurality of them are arranged at intervals around the circumference.

In such a configuration, the bolt 10 and the nut 11
Since the disc rotor 1, which has been divided into two parts, can be easily separated into the pieces 3 and 4 by removing the wheel, it is easy to attach and assemble only the disc rotor 1 from the axle without removing the wheel. The centrifugal force acting on each piece 3 or 4 when the attached disc rotor 1 rotates is transmitted to the other piece 4 or 3, respectively, via the retaining ring 7, and the bolt 10 is configured to absorb the centrifugal force. Since almost no locking force is applied, sufficient strength of the bolted portion is ensured.

As described above, according to the method for attaching a two-part disc rotor for vehicles according to the present invention, the disc rotor can be mounted in two parts.
The split type makes attachment and detachment from the axle extremely easy, and the effect of centrifugal force caused by the two-part type is reduced by the thick wall of the disc rotor and the retaining ring, which has a U-shaped cross section. The concave and convex fitting part of the rotor receives the centrifugal force so that it does not act on the bolt tightening part, and its durability is fully comparable to that of a conventional single disc rotor, and its practical benefits are unparalleled. It is something.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a partial plan view of a disc rotor, and FIG. 2 is a longitudinal sectional view. 1...Disc rotor, 2...Through hole, 3゜4...Each piece, 5, 6...Stepped thick part, 7... ... Retaining ring, 8 ... Through hole, 9 ... Flange section, 10 ... Bolt, 11 ... Nut, 12 ... ...Stopper washer.

Claims (1)

[Claims] 1. In a vehicle disc brake rotor that is divided into two parts along a radius line that includes the axis, a concentric circular stepped thick part is provided on the radially inner part of the disc rotor, and the two parts are divided with respect to the axle to which it is attached. After combining the disc rotor,
An annular circular retaining ring that is fitted onto the axle and has a circumferential flange on the outer periphery is fitted and supported on the stepped thick part of the disc rotor and its stepped outer periphery, and these discs are attached at the position of the thick part of the disc rotor. A method for installing a two-piece disc rotor for a vehicle, characterized by connecting the rotor and a circular retaining ring by tightening bolts.