JP2006037993A - Disc rotor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disc rotor having a less number of parts and lower cost by using the parts in common for vehicle models. <P>SOLUTION: The disc rotor 1 comprises a mounting part 2, a braking part 3 formed separately from the mounting part 2 and having a pair of approximately disc sliding plates 13, 14, and a plurality of bolts 4. The mounting part 2 has an approximately cylindrical peripheral wall portion 6 extending in parallel to the direction of the rotational axis of the disc rotor 1, and the peripheral wall portion is provided with a plurality of slender cutouts 9 extending in parallel to the axial direction. The braking part 3 is slidable relative to the peripheral wall portion 6 in the axial direction and fittable to the mounting part 2 with the axial direction set in any of two opposite directions. The bolts 4 are fastened via the cutouts 9 to assembling holes 19 of an assembling part 18 provided on one sliding plate 13 to adjust an axial relative position relationship between the mounting part 2 and each of the sliding plates 13, 14. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a disc rotor of a disc brake device used in a vehicle or the like.

  The disc rotor includes a disc-shaped braking portion having a braking surface for clamping with a brake pad, and an attachment portion for attachment to a vehicle. In general, the disk rotor is made of cast iron and is integrally formed.

In recent years, in order to reduce the weight, there is a structure in which the attachment portion is made of a lightweight material such as aluminum. In this case, the brake part needs to be made of cast iron in consideration of generation of frictional heat and the like, and therefore, the attachment part and the brake part are configured separately (for example, see Patent Document 1).
JP-T 8-505924

  By the way, the relative position in the disc rotor rotation axis direction between the vehicle-side component for mounting the mounting portion and the holding surface of the brake pad differs depending on the vehicle type. For this reason, the relative position in the axial direction between the mounting portion and the braking portion of the disk rotor also differs depending on the vehicle type.

  However, regardless of whether it is an integral type or a separate type as described above, the relative positional relationship in the axial direction between the mounting portion and the braking portion is uniformly determined, corresponding to the difference in the positional relationship for each vehicle type To do this, a dedicated disk rotor must be manufactured for each vehicle type. As a result, the number of manufactured parts and the cost may increase.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a disc rotor capable of sharing parts used between vehicle types, and thereby reducing the number of parts and cost. It is to be.

  In order to achieve the above object, in the invention according to claim 1 of the present application, a mounting portion and a brake portion including a pair of substantially disc-shaped sliding plates are a disk rotor fixed by a fastening member. The mounting portion includes a peripheral wall portion extending in parallel with the rotation axis direction of the mounting portion, and the braking portion includes an attachment portion fixed to the peripheral wall portion by the fastening portion, and the peripheral wall portion and the assembly The gist of the disk rotor is characterized in that the relative positional relationship in the axial direction with the attachment portion can be changed.

  According to the first aspect of the present invention, the attachment portion and the braking portion are configured separately, and the attachment portion is provided with the peripheral wall portion extending in parallel with the rotation axis direction. And this surrounding wall part and the assembly | attachment part provided in the braking part are fixed with a fastening member. In the present invention, since the relative positional relationship in the axial direction between the peripheral wall portion and the assembly portion can be changed, even if the same mounting portion and braking portion are used, only by adjusting the relative positional relationship, It is possible to easily obtain a disk rotor in which the mounting portion and the braking portion (sliding plate) have different relative positional relationships in the rotation axis direction. Therefore, unlike the prior art in which it is necessary to manufacture a disc rotor having a different relative positional relationship in the rotation axis direction for each vehicle type, a disc rotor corresponding to each vehicle type can be obtained using common parts. As a result, the number of parts and the cost can be reduced.

  According to a second aspect of the present invention, in the disk rotor according to the first aspect, the peripheral wall portion can be inserted through the fastening member, and the fastening position in the axial direction of the fastening member relative to itself can be changed. The gist of the present invention is to provide a notch or a long hole for the assembly, and the assembly portion includes an assembly hole for fastening the fastening member.

  According to the second aspect of the present invention, the fastening member is fastened to the assembly hole of the assembly part through the notch or the long hole provided in the peripheral wall part, so that the peripheral wall part and the assembly part are Is fixed. Due to the presence of such a notch or a long hole, the fastening position in the rotation axis direction with respect to the peripheral wall portion can be continuously changed. Can be easily changed, and in particular, fine adjustment can be easily performed.

  Furthermore, in the invention according to claim 3, in the disk rotor according to claim 1, the peripheral wall portion includes a plurality of mounting holes through which the fastening member can be inserted and the positions in the axial direction are different. The gist of the assembling part is that it comprises an assembling hole for fastening the fastening member.

  According to the third aspect of the present invention, the peripheral wall portion and the assembly portion are fixed by the fastening member being fastened by the assembly hole of the assembly portion via the mounting hole provided in the peripheral wall portion. Is done. Since the plurality of attachment holes are provided at different positions in the axial direction, the fastening position in the rotational axis direction can be changed by appropriately selecting an attachment hole through which the fastening member is inserted. That is, since a plurality of mounting holes are provided in advance, by making the mounting holes not misaligned, the relative positional relationship in the axial direction between the peripheral wall portion and the assembly portion can be easily and It can be changed with high accuracy.

  In addition, in the invention according to claim 4, in the disk rotor according to any one of claims 1 to 3, the assembly portion is provided on one of the pair of sliding plates. It is a summary.

  According to the fourth aspect of the present invention, the assembly portion is provided on one of the pair of sliding plates. As described above, in the disk rotor in which only one sliding plate is fixed to the mounting portion, when the braking portion becomes high temperature due to friction or the like generated in the sliding plate, the position closer to the mounting portion in the braking portion ( The outer peripheral side) tends to be deformed so as to incline toward the fixed sliding plate. Moreover, the said inclination amount in a braking part receives the influence of the bending of a surrounding wall part, and changes with the relative positions of the assembly | attachment part and a surrounding wall part in the axial direction. In this respect, in the invention described in claim 4, since the relative positional relationship in the axial direction between the assembly portion and the peripheral wall portion can be adjusted, the direction and amount of the inclination of the braking portion should be adjusted according to needs. Can do. As a result, it is possible to reduce the brake vibration caused by the inclination.

  In addition, in the invention according to claim 5, in the disk rotor according to any one of claims 1 to 4, the attachment may be performed even if the axial direction of the pair of sliding plates with respect to the attachment portion is reversed. The gist is that the part and the braking part are configured to be fixable.

  According to the fifth aspect of the present invention, the mounting portion and the braking portion can be fixed even if the axial direction of the pair of sliding plates with respect to the mounting portion is reversed. For this reason, for example, as in the invention described in claim 4, when the structure is such that only one sliding plate is fixed to the mounting portion, the sliding plate on the assembly portion side is provided outside the vehicle. Both the so-called “outer joint” to be fixed and the so-called “inner joint” in which the sliding plate on the assembly portion side is fixed to the inside of the vehicle can be realized. In addition, this makes it possible to remarkably expand the relative positional relationship in the axial direction between the mounting portion and the sliding plate and the adjustment range of the direction and amount of inclination of the braking portion.

  According to the present invention, it is possible to share the parts used between the vehicle types, and therefore, an excellent effect is achieved that the number of parts and the cost can be reduced.

  Hereinafter, an embodiment will be described with reference to the drawings.

  As shown in FIG. 2, the disc rotor 1 according to the present embodiment includes a mounting portion 2 for mounting on a vehicle, and a mounting portion 2 configured separately from the mounting portion 2, and for braking by friction, It consists of a plurality of bolts 4 as fastening members for connecting the mounting portion 2 and the braking portion 3.

  1 and 3, the configuration of the mounting portion 2 and the braking portion 3 will be described in detail. The mounting portion 2 is substantially orthogonal to the rotational axis direction of the disc rotor 1 and is attached to a vehicle-side hub (not shown). And a substantially cylindrical peripheral wall portion 6 extending in parallel to the axial direction from the periphery of the mounting wall portion 5. The mounting wall portion 5 is provided with a plurality of mounting holes 8 for attaching to the hub with bolts (not shown). The peripheral wall portion 6 is provided with a plurality of elongated notches 9 extending in parallel to the axial direction at equal intervals.

  The braking unit 3 includes a pair of substantially disc-shaped sliding plates 13 and 14 that are perpendicular to the rotational axis direction of the disc rotor 1 and have braking surfaces 11 and 12 that are sandwiched between brake pads (not shown). . The sliding plates 13 and 14 are arranged with a predetermined gap therebetween, and a plurality of fins 15 arranged radially are provided in the gap. By dividing the predetermined gap by the fins 15, a ventilation space for cooling the sliding plates 13 and 14 is configured.

  Holes 16 and 17 for fitting the peripheral wall portion 6 of the mounting portion 2 are formed at the center of the substantially circular plates of the sliding plates 13 and 14. On the inner side surface of the hole 16 of one sliding plate 13, assembly portions 18 that can substantially contact the outer peripheral surface of the peripheral wall portion 6 of the mounting portion 2 are provided at equal intervals. Is provided with an assembly hole (screw hole) 19 for assembly to the peripheral wall portion 6. Further, the inner surface of the hole 16 in the assembly portion 18 is formed in parallel to the rotational axis direction of the disk rotor 1. Thereby, the assembly | attachment part 18 can be slid to an axial direction with respect to the surrounding wall part 6. FIG.

  Furthermore, the size of the hole 17 is set so that a predetermined space is formed between the other sliding plate 14 and the outer peripheral surface of the peripheral wall portion 6. When the disk rotor 1 rotates, air enters from the predetermined space toward the ventilation space, and cooling of the sliding plates 13 and 14 is promoted.

  Furthermore, the brake part 3 is configured to be fitted into the attachment part 2 in either of the two opposite directions of the rotation direction of the disc rotor 1. That is, among the pair of sliding plates 13, 14, the sliding plate 13 provided with the mounting portion 18 is arranged on the mounting wall portion 5 side of the mounting portion 2, and the mounting portion 18 is not provided. The sliding plate 14 can be disposed on the mounting wall 5 side of the mounting portion 2.

  When the disc rotor 1 is configured by assembling the mounting portion 2 and the braking portion 3 with the bolts 4, the peripheral wall portion 6 is fitted into the holes 16 and 17 of the sliding plates 13 and 14. At this time, the direction of the rotating shaft direction of the disc rotor 1 of the braking portion 3 with respect to the mounting portion 2 may be any of the two directions, and is appropriately determined according to the vehicle type. By this fitting, the peripheral wall portion 6 comes into contact with the assembly portion 18.

  Then, the relative position in the rotation axis direction of the disc rotor 1 between the mounting portion 2 and the braking portion 3 is adjusted to a predetermined position. Further, the bolt 4 is fastened to each assembly hole 19 of the assembly portion 18 through each notch 9 of the peripheral wall portion 6. Thereby, the attachment part 2 and the braking part 3 will be fixed. In the present embodiment, the presence of the notch 9 makes it possible to continuously change the relative position in the rotational axis direction of the disc rotor 1 between the assembly portion 18 fixed by the bolt 4 and the peripheral wall portion 6. .

  As described above in detail, in the disc rotor 1 of the present embodiment, the mounting portion 2 and the braking portion 3 are configured separately, and the braking portion 3 is arranged in the rotational axis direction of the disc rotor 1 with respect to the mounting portion 2. It was configured to be slidable. In addition, an elongated notch 9 is formed in the peripheral wall portion 6 of the attachment portion 2 so that the relative position in the axial direction between the assembly portion 18 fixed by the bolt 4 and the peripheral wall portion 6 can be changed. For this reason, it is possible to easily obtain the disk rotor 1 in which the relative positions in the axial direction between the mounting portion 2 and the braking surfaces 11 and 12 are different by simply using common parts and adjusting the assembly position. Therefore, unlike the prior art that required manufacturing disk rotors having different axial relative positional relationships for each vehicle type, it is possible to obtain the disk rotor 1 corresponding to each vehicle type. As a result, the number of parts and cost can be reduced.

  Further, the brake unit 3 can be fitted regardless of the direction of the axial direction of the brake part 3 with respect to the attachment part 2, and the attachment part 2 and the brake part 3 can be fixed in the fitted state. Yes. That is, the axial direction of the braking portion 3 can be reversed and fixed with respect to the mounting portion 2. Therefore, as shown in FIG. 4, a so-called “outer joint” in which the sliding plate 13 on the assembly part 18 side is joined to the attachment wall part 5 side of the attachment part 2 that is generally on the vehicle exterior side as shown in FIG. 3. In general, it is possible to realize both joining modes of so-called “inner joining” in which the sliding plate 13 on the assembly part 18 side is joined to the free end side of the peripheral wall part 6 of the mounting part 2 on the vehicle inner side, You can secure what you need. Thereby, the adjustment range of the relative positional relationship in the axial direction between the mounting portion 2 and the braking surfaces 11 and 12 can be remarkably increased.

  Furthermore, the braking part 3 may become high temperature by the friction etc. which arise on the braking surfaces 11 and 12. FIG. In such a case, in the disc rotor 1 in which only one sliding plate 13 is fixed to the mounting portion 2, the outer peripheral side of the braking portion 3 tends to be deformed so as to be inclined toward the sliding plate 13. Further, the amount of inclination in the braking portion 3 is affected by the bending of the peripheral wall portion 6, and changes depending on the relative position in the axial direction between the assembly portion 18 and the peripheral wall portion 6. In this respect, in the present embodiment, the joining mode can be switched as described above, or the relative positional relationship in the axial direction between the assembly portion 18 and the peripheral wall portion 6 can be adjusted. Therefore, the direction and amount of the braking portion 3 can be adjusted according to needs. As a result, it is possible to reduce the brake vibration caused by the inclination.

  In addition, the presence of the notch 9 makes it possible to send air more actively from the inner peripheral side of the mounting portion 2 toward the ventilation space of the braking portion 3. For this reason, the cooling effect of the braking part 3 can be improved.

  In the embodiment described above, for example, a part of the configuration can be appropriately changed as follows. Of course, other modifications not exemplified below are also possible.

  (A) In the above embodiment, the notch 9 of the peripheral wall portion 6 is provided in parallel to the rotation axis direction of the disk rotor 1, but it is not necessarily required to be parallel. The assembly position of the bolt 4 only needs to be variable in the axial direction with respect to the peripheral wall 6, and may be inclined or curved, for example.

  (B) In place of the notch 9, a long hole may be provided in the peripheral wall portion. Furthermore, as shown in FIG. 5, it is good also as the surrounding wall part 23 which provided the several attachment hole 22 from which the position of the said axial direction differs. Of course, each of the plurality of attachment holes may be a long hole.

  (C) In the above embodiment, the bolt 4 is fastened to the assembly hole 19 of the braking portion 3 through the notch 9 of the mounting portion 2. However, the bolt is integrated instead of the assembly hole 19. The bolts of the brake part may be configured to be able to enter the notch 9 of the mounting part 2 and the bolts may be fastened with nuts on the inner surface side of the peripheral wall part 6.

  (D) In the above embodiment, the notch 9 is provided in the mounting part 2 and the assembly hole 19 is provided in the braking part 3, but a notch, a long hole or a plurality of mounting holes are provided on the braking part side. The structure which provided and provided the assembly hole in the attaching part side may be sufficient.

It is a disassembled perspective view which shows the component of a disk rotor. It is a perspective view which shows the disc rotor in one Embodiment. It is a partial cross section perspective view of a disk rotor. It is a fragmentary sectional view of the disk rotor which shows the case where a brake part is joined inside. It is a perspective view which shows the attachment part of another form.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Disc rotor, 2 ... Mounting part, 3 ... Braking part, 4 ... Bolt as a fastening member, 6 ... Perimeter wall part, 9 ... Notch, 13, 14 ... Sliding plate, 18 ... Assembly part, 19 ... Assembly Attached hole, 22 ... mounting hole, 23 ... peripheral wall.

Claims (5)

The mounting portion and a braking portion provided with a pair of substantially disc-shaped sliding plates are a disk rotor fixed by a fastening member,
The mounting portion includes a peripheral wall portion extending in parallel to the rotation axis direction of the mounting portion,
The braking portion includes an assembly portion fixed to the peripheral wall portion by the fastening portion,
A disc rotor configured to be capable of changing a relative positional relationship in the axial direction between the peripheral wall portion and the assembly portion. The peripheral wall portion includes a notch or a long hole through which the fastening member can be inserted and the fastening position of the fastening member relative to itself can be changed.
The disk rotor according to claim 1, wherein the assembly portion includes an assembly hole for fastening the fastening member. The peripheral wall portion includes a plurality of mounting holes through which the fastening member can be inserted and the positions in the axial direction are different,
The disk rotor according to claim 1, wherein the assembly portion includes an assembly hole for fastening the fastening member.   The disk rotor according to any one of claims 1 to 3, wherein the assembly portion is provided on one of the pair of sliding plates.   5. The structure according to claim 1, wherein the mounting portion and the braking portion can be fixed even when the axial direction of the pair of sliding plates with respect to the mounting portion is reversed. Crab disk rotor.

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