JP2007333039A - Brake disc - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a brake disc capable of surely preventing thermal fall even when casting conditions for additionally mounting the braking body vary, in the brake disc applying an unconstrained connecting structure between the braking body and a mounting member to prevent thermal fall of the braking body by frictional heat in braking. <P>SOLUTION: This brake disc comprises the annular braking body 10, the mounting member 20 at the center, and a plurality of slide guides 30 disposed between the braking body and the mounting member. A plurality of guide projecting portions 27 projecting outward in the radial direction are formed on an outer peripheral portion of the mounting member 20. Each slide guide 30 has an engagement recessed portion 33 to which the guide projecting portion 27 can be inserted. By engaging the engagement recessed portion 33 with each guide projecting portion 27, each slide guide 30 is mounted to each guide projecting portion 27 in a state of being displaceable in the radial direction. Further the plurality of slide guides 30 are integrated with the braking body 10 in a state of being casted to an inner peripheral portion 15 of the braking body 10. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a brake disc for a disc brake.

  A brake disc, which is a main component of a disc brake device, generally includes an annular braking body (also referred to as a braking member or a sliding member), and an attachment member for mounting on an axle provided in the central region of the braking body. It has. In such a brake disk, when the brake body thermally expands due to frictional heat at the time of braking, the annular brake body is firmly restrained by the mounting member. There is known a phenomenon in which a moment is generated and the braking body is deformed so as to be inclined in the axial direction (this phenomenon is referred to as “heat collapse”). The thermal collapse causes uneven wear on the brake disc, which in turn causes unstable braking torque and unpleasant brake vibration during braking. For this reason, various measures for preventing thermal collapse have been proposed.

  The brake disc of Patent Document 1 includes a disc rim 3 (corresponding to an annular braking body) and an internal pot-shaped portion 2 (corresponding to an attachment member). The disc rim 3 is formed by connecting two parallel wear rings by a plurality of webs 12, and each of the radially extending webs 12 has a radially inner end portion 11. On the other hand, the inner pot-like portion 2 has a support ring 7 formed in a flange shape, and a plurality of radial recesses 10 formed as grooves are provided on the outer peripheral portion of the support ring 7. Then, the inner end portions 11 in the radial direction of the web 12 of the disc rim 3 are engaged with the respective recesses (grooves) 10 of the support ring 7 of the inner pot-shaped portion 2, so that the inner pot shape in the disc rotation direction is obtained. A connection between the part 2 and the disc rim 3 is established. Further, in each recess (groove) 10 of the support ring 7, a gap (radial clearance) is secured between the bottom of the recess (groove) 10 and the inner end face of the radially inner end portion 11 of each web 12. Thus, each web 12 can be displaced in the radial direction in the recess (groove) 10. Thus, by adopting a non-restraining connection structure in the radial direction between the disc rim 3 and the inner pot-like portion 2, the relative heat between the disc rim 3 and the inner pot-like portion 2 can be increased. Compensates for expansion and prevents thermal collapse.

  In addition, regarding the manufacturing method of the brake disk having the above-mentioned structure, Patent Document 1 (Patent Publication), page 4, left column, lines 12 to 17 describes that “inner pot-shaped portion 2 is a casting for disc rim 3. The disc rim 3 is cast in a mold and in a so-called casting connection method, whereby the material of the disc rim reaches the radial recess 10 of the support ring 7 and thereby the support ring 7 and the disc. The web 12 of the rim 3 meshes like a tooth. "

Japanese Patent No. 2791191 (Claim 1 and Example)

  In order for the brake disk of Patent Document 1 to have the desired effect of preventing thermal collapse, in each of the plurality of recesses (grooves) 10 provided in the support ring 7 of the internal pot-shaped portion 2, each recess (groove) 10. Gap (radial clearance) is ensured between the bottom of each web 12 and the inner end surface of the inner end portion 11 in the radial direction of each web 12, and the length of each gap is sufficient for thermal expansion compensation. It will be necessary to ensure the length (described as 3 mm in the example of Patent Document 1).

  However, as described above, the brake disk disclosed in Patent Document 1 has an internal pot-shaped portion 2 having a support ring 7 having a plurality of recesses (grooves) 10 formed in advance, and the internal pot-shaped portion 2 is formed into a disc. After being set in a casting mold for the rim 3, a material (a molten metal) is poured into the casting mold, and the disc rim 3 is manufactured by a post-casting method by a casting and joining method. That is, with respect to the radially inner end portion 11 of each web 12 in the disc rim 3, it is expected that the material (molten metal) flows into the radial recess 10 of the support ring 7 and solidifies there to become meshing teeth. It is made with a technique.

  However, in the disk structure based on such direct casting connection, the bottom of the recess 10 and the radially inner end portion 11 of the web 12 are caused by variations in casting conditions in the post casting stage of the disc rim 3. It is difficult to accurately ensure a gap (radial clearance) between the inner end surface. In addition, it is expected that a situation in which the gap cannot be substantially secured frequently occurs. In Patent Document 1, various contrivances such as making the tensile strength different between the constituent material of the inner pot-shaped portion 2 and the constituent material of the disc rim 3 are made, but direct casting as disclosed in Patent Document 1 is performed. It is not an exaggeration to say that it is inherently impossible to secure a stable gap or clearance in each recess 10 as long as the bonding method is employed.

  Thus, in the brake disk of patent document 1, since the outer peripheral area of the support ring 7 of the inner pot-shaped part 2 is cast directly with respect to the inner peripheral part of the disc rim 3, the patent It is extremely difficult to manufacture a brake disk having a desired gap or clearance as in the idea shown in Document 1. For this reason, the brake disc that is actually commercialized may not be able to exhibit the desired heat fall prevention effect.

  An object of the present invention is a brake disc that employs a radially unconstrained connection structure between a braking body and a mounting member in order to prevent thermal collapse of the braking body due to frictional heat during braking. Even if there are variations in the post-casting conditions, it is an object of the present invention to provide a brake disc that can reliably prevent thermal collapse without losing the effect of thermal collapse.

  The present invention includes an annular braking body, a substantially cylindrical mounting member disposed at the center of the braking body, and a plurality of slide guides interposed between the braking body and the mounting member to connect the braking body and the mounting member. A brake disc provided with a plurality of guide protrusions projecting radially outwardly on an outer peripheral portion of the mounting member, and each of the plurality of slide guides includes a guide protrusion of the mounting member. A plurality of slide guides can be displaced in the radial direction by engaging the engagement recesses of the slide guide with the guide protrusions of the mounting member. The brake disc is mounted on the plurality of guide protrusions, and the plurality of slide guides are integrated into the brake body by being cast in the brake body.

  According to this configuration, the annular braking body is connected to the mounting member disposed at the center thereof via the plurality of slide guides cast and integrated in the braking body. That is, based on the engagement relationship between each guide protrusion protruding outward in the radial direction on the outer periphery of the attachment member and the engagement recess of each slide guide integrated with the brake body, the attachment member and the brake A brake disk is configured in which relative rotation between the body and the body is restricted, and both rotate together. Since each slide guide is mounted on each guide projection of the mounting member in a radially displaceable state (that is, in an unconstrained state), the brake body thermally expands due to frictional heat generated during braking of the brake disk. However, each slide guide is displaced in the radial direction following the thermally expanding braking body, and the mounting member does not restrain any thermal deformation of the braking body. Therefore, according to this brake disk, even during braking, the brake body is naturally allowed to thermally expand in the disk radial direction, so that no thermal collapse occurs.

  In the brake disk of the present invention, the slide guide interposed between the braking body and the mounting member is cast in the braking body, and each guide protrusion provided on the outer peripheral portion of the mounting member is the braking body. It is not directly cast in In other words, even when this brake disc is manufactured by a casting method according to the casting and joining method, the brake body is retrofitted to the place where the guide protrusion on the outer periphery of the mounting member is covered with the slide guide, and the slide is made. Only the guide will be cast in the brake body. Therefore, the clearance between the inner wall surface of the engaging recess of the slide guide and the outer surface of the guide protrusion of the mounting member is determined by setting the shape and size of the guide protrusion at the stage of forming the mounting member, and the slide guide. The shape of the concave portion corresponding to the guide protrusion of the mounting member at the stage of retrofitting the brake body as in the conventional example is determined in advance by setting the shape and dimensions of the engaging concave portion at the stage of forming The clearance is not determined incidentally when the two are simultaneously molded. As described above, according to the brake disc of the present invention, the clearance is not determined at the stage of retrofitting the brake body, so that the clearance can be set more accurately and reliably than in the prior art. Even if there are variations in the post-casting conditions, there is no immediate loss of heat fall prevention effect.

  In the brake disk of the present invention, the mounting member including the guide protrusion is formed of metal, and the slide guide is formed of heat-resistant resin, ceramic, or a metal different from the constituent metal of the mounting member. It is preferable.

  According to this configuration, the mounting member including the guide protrusion is made of metal, whereas the slide guide is made of a material different from the constituent metal of the mounting member (that is, plastic, ceramic, or mounting member). The metal is different from the constituent metal. For this reason, there is no risk of heat fusion between the inner wall portion of the engaging recess of the slide guide and the guide projection due to the heat generated when the slide guide is cast on the brake body, and after the brake body has been cast, In this case, the slide guide is not constrained by the mounting member, and the state in which the slide guide can be displaced in the radial direction is maintained. Further, by using a different material for the slide guide and the mounting member, the degree of freedom in designing the strength and natural frequency of the entire brake disc can be increased.

  In the brake disk according to the present invention, the brake body includes a bench formed by connecting a first annular disc portion and a second annular disc portion with a plurality of connecting ribs extending between the annular disc portions and extending in the radial direction. It is a rated type brake body, and the plurality of slide guides are casted on the inner peripheral portion of one of the first and second annular disc parts constituting the brake body. It is preferable that the brake body is integrated.

  According to this configuration, each slide guide is cast on one inner peripheral portion of the first and second annular disk portions constituting the braking body, so that the slide guide and the mounting member are The arrangement position of the guide protrusion is shifted from the center position in the thickness direction of the braking body. Therefore, the inner end opening of each of the air passages secured between the adjacent connecting ribs of the brake body is not blocked by the slide guide or the like. Therefore, the ventilation characteristics of the brake body are impaired by the slide guide or the like. No worries

[Additional remarks] Further preferable aspects and additional constituent elements of the present invention are listed below.
The plurality of guide protrusions are provided on the outer peripheral portion of the mounting member so as to be equiangularly spaced about the central axis (O) of the mounting member.
-The mounting member is a bottomed cylindrical mounting member obtained by press forming a steel plate.

  According to the brake disk of the present invention, the braking body is connected to the mounting member in a non-constraining manner in the radial direction through a plurality of slide guides that are cast and integrated into the annular braking body. Various clearances between the inner wall surface of the engaging recess of the slide guide and the outer surface of the guide protrusion of the mounting member are not affected even if there are variations in the casting conditions when the brake body is cast afterward. Can be determined accurately. Therefore, it is possible to reliably prevent thermal collapse regardless of variations in the retrofitting casting conditions of the braking body.

  Hereinafter, an embodiment in which the present invention is embodied in a ventilated brake disc will be described with reference to the drawings (FIGS. 1 to 5).

  As shown in FIG. 1, the brake disc includes an annular braking body 10, a mounting member 20 disposed at the center of the braking body 10, and a plurality of slide guides 30.

  As shown in FIGS. 1 and 2A, the annular braking body 10 includes a first annular disc portion 11 and a second annular disc portion 12 between the annular disc portions 11 and 12. A plurality of connecting ribs 13 extending radially in the radial direction are connected to each other, and a ventilating structure in which a radially extending air passage 14 is secured between adjacent connecting ribs 13 is provided. The outer side surfaces of the first and second annular disk portions 11 and 12 serve as braking surfaces (sliding surfaces) that make frictional contact with the brake caliper brake brake. Further, the inner peripheral portion 15 of the first annular disc portion 11 is stretched toward the inner side than the inner peripheral end 12a of the second annular disc portion 12 (that is, toward the central axis O of the braking body 10). The slide guide 30 is cast by the inner peripheral portion 15.

  As shown in FIGS. 3A and 3B, the mounting member 20 is formed into a substantially cylindrical shape (more specifically, a bottomed cylindrical shape) by press-forming a thin single-sheet rolled steel plate with a press machine. It is formed. The mounting member 20 has a substantially disc-shaped axle mounting flange 21 and the rear peripheral edge of the axle mounting flange 21 parallel to the central axis O of the mounting member 20 (rightward in FIG. 3B). And a cylindrical wall 22 having a short cylindrical shape and an outer peripheral flange portion 23 provided in a bowl shape at the end of the cylindrical wall 22. From another viewpoint, the mounting member 20 has a generally hat-shaped radial cross-sectional shape. Since the mounting member 20 is obtained by press-forming a single rolled steel plate, the thickness of each of the axle mounting flange 21, the cylindrical wall 22 and the outer peripheral flange portion 23 is in accordance with the thickness of the material steel plate. Are the same.

  The axle mounting flange 21 extends in a direction (that is, a radial direction) orthogonal to the central axis O common to the mounting member 20 and the braking body 10. The axle mounting flange 21 is formed with a large central hole 24 through which the axle passes at the center position, and a plurality of bolt insertion holes 25 (five in this example) at positions surrounding the center hole 24. They are arranged and formed at equal angular intervals (that is, at intervals of 72 ° with the central axis O as the center).

  The outer peripheral flange portion 23 of the mounting member 20 protrudes radially outward along the entire circumference of the rear end edge of the cylindrical wall 22. By forming a plurality of cutouts 26 at predetermined intervals along the circumferential direction with respect to the outer peripheral flange 23, the outer peripheral flange 23 has a plurality of guide protrusions 27 (eight in this example). ) Are provided at equiangular intervals (that is, 45 ° intervals with the center axis O as the center). These guide protrusions 27 are also formed at the same time as the main body portion of the mounting member 20 during press forming of the rolled steel sheet, and the thickness of the guide protrusions 27 conforms to the thickness of the material steel sheet. Thus, each guide protrusion 27 protrudes outward in the radial direction (that is, the direction orthogonal to the central axis O) from the root or base end of the outer peripheral flange 23. In the present embodiment, each guide protrusion 27 has a rectangular shape that is close to a rectangular shape when viewed from the front, and the outer peripheral edge of each guide protrusion 27 has an arc shape along a virtual circle centered on the central axis O. I am doing.

  As shown in FIGS. 4 and 5, the slide guide 30 is formed as a gently curved horizontally long block body, and the outer end side wall 31 and the inner end side wall 32 of the block-shaped slide guide 30 are Both are gently curved in an arc. The slide guide 30 is provided with an engagement recess 33 opened in the inner end side wall 32 thereof. As shown in FIG. 5, the engagement recess 33 of the slide guide 30 is formed in a shape and a size that can receive at least a portion near the tip of the guide protrusion 27 of the mounting member, and as a result, the guide of the mounting member. The protrusion 27 is a recess that can be inserted in a tight state. For this reason, the inner wall 33e located at the innermost part of the engaging recess 33 is curved in an arc shape along the circumferential direction so as to correspond to the arc shape of the outer peripheral edge of the guide protrusion 27.

  The slide guide 30 of this embodiment is formed by integrally forming a heat-resistant resin using a molding die. Examples of the heat-resistant resin include so-called engineering plastics such as polyacetal, polyamide, polycarbonate, and thermoplastic polyester. Instead of the heat resistant resin, the slide guide 30 may be formed using a ceramic or a metal different from the constituent metal of the mounting member 20.

  The slide guide 30 is a connecting member that is interposed between the brake body 10 and the mounting member 20 and indirectly connects the brake member 10 and the engaging recess of the slide guide 30 with respect to the guide protrusion 27 of the mounting member 20. 33 is used by engaging. Incidentally, in this embodiment, when the slide guide 30 is mounted on each guide protrusion 27 of the mounting member 20, three types of clearances (which can be formed between the engagement recess 33 of the slide guide 30 and the guide protrusion 27 ( The circumferential clearance C1, the axial clearance C2, and the radial clearance C3) are set as follows.

  As suggested in FIG. 5, the circumferential clearance C <b> 1 includes two inner walls 33 a and 33 b located at both ends in the circumferential direction of the engaging recess 33 and two circumferential ends at the guide protrusion 27 (two points in FIG. 5). The circumferential clearance C1 = C1a + C1b is set to 0.2 mm or less (but not zero).

  As shown in FIG. 2B, the axial clearance C <b> 2 is between the two inner walls 33 c and 33 d positioned at both axial ends of the engaging recess 33 and the two axial ends of the guide protrusion 27. The sum of two gaps C2c and C2d that can be generated, and this axial clearance C2 = C2c + C2d is set to 0.2 mm or less (but not zero).

  As shown in FIG. 2B, the radial clearance C3 refers to a gap C3 formed between the back wall 33e of the engaging recess 33 and the outer peripheral edge of the guide protrusion 27. The radial clearance C3 is , 0.5 mm or less (but not zero).

  In manufacturing the brake disk of the present embodiment, first, the mounting member 20 as shown in FIG. 3 and the slide guides 30 (eight in total) as shown in FIGS. 4 and 5 are prepared. Then, by engaging the engaging recesses 33 of the slide guides 30 with the guide protrusions 27 of the mounting member 20, the eight slide guides 30 are mounted on the eight guide protrusions 27, respectively. Subsequently, after the mounting member 10 with the slide guide 30 is set in a mold for casting a brake body (not shown), a molten cast iron is poured into the mold to retrofit the brake body 10 around the mounting member 20. . Then, as shown in FIG. 1 and FIGS. 2A and 2B, eight slide guides 30 are cast on the inner peripheral portion 15 of the first annular disc portion 11 of the braking body 10. However, the entire surface of each slide guide 30 is not buried in the braking body 10, and the inner end side wall 32 of the slide guide 30 is exposed. Therefore, the guide protrusions 27 are inserted and arranged in the engagement recesses 33 opened in the inner end side wall 32, so that the slide guide 30 cast in the inner peripheral portion 15 of the annular brake body 10 is used. The brake body 10 and the mounting member 20 are indirectly connected.

  According to the present embodiment, the attachment member 20 is based on the engagement relationship between the guide protrusions 27 on the outer periphery of the attachment member 20 and the engagement recesses 33 of the slide guides 30 integrated with the brake body 10. The brake disc is configured such that relative rotation between the brake 10 and the braking body 10 is restricted, and the two rotate together. Then, based on the mutual guide relationship between the guide protrusion 27 and the engaging recess 33, each slide guide 30 is mounted on each guide protrusion 27 of the mounting member 20 so as to be displaceable in the radial direction. For this reason, even if the brake body 10 is thermally expanded due to frictional heat generated during braking of the brake disk, each slide guide 30 is displaced in the radial direction following the thermally expanded brake body 10, and the mounting member 20 is The thermal deformation of the braking body 10 is not restrained at all. Therefore, according to this brake disc, even during braking, the brake body 10 is naturally allowed to thermally expand in the radial direction of the disc, so that no thermal collapse occurs.

  According to the present embodiment, the clearances C1, C2, and C3 between the inner wall surface of the engaging recess 33 of the slide guide 30 and the outer surface of the guide protrusion 27 of the mounting member 20 are the same as when the mounting member 20 is formed. It is uniquely determined in advance by setting the shape and size of the guide protrusion 27 and setting the shape and size of the engaging recess 33 when the slide guide 30 is formed. That is, in the present embodiment, the clearances C1, C2, and C3 are not determined at the stage of retrofitting casting of the brake body 10, so that the clearance setting can be made more accurate than before. Therefore, even if there is some variation in the retrofitting casting conditions of the brake body 10, the above-described effect of preventing the thermal collapse is not lost.

  In this embodiment, since the attachment member 20 is a press-formed product of a steel plate, the weight of the brake disk can be reduced as compared with the case where a general casting attachment member is used.

  In this embodiment, since the mounting member 20 is made of metal, the slide guide 30 is made of a heat-resistant resin made of a different material, so that the slide guide 30 is heated by the heat generated when the slide guide 30 is cast on the braking body 10. There is no fear of heat fusion between the inner wall portion of the 30 engaging recesses 33 and the guide projection 27. Therefore, even after the casting of the brake body 10 is completed, the slide guide 30 is not constrained by the mounting member 20, and a state in which the slide guide 30 can be displaced in the radial direction is maintained. In addition, since the slide guide 30 is formed of a heat resistant resin, no electrolytic corrosion (corrosion due to potential generation) occurs between the slide guide 30 and the steel plate mounting member 20. Furthermore, since the strength and specific gravity can be changed by making the slide guide 30 different from the brake body 10 and the mounting member 20, there is an advantage that the degree of freedom in designing the strength and natural frequency of the entire brake disc is increased. is there.

  In the present embodiment, all the slide guides 30 are cast on the inner peripheral portion 15 of the first annular disc portion 11 of the braking body 10, and as a result, the slide guide 30 and the guide projection 27 of the mounting member. Is shifted laterally from the central position in the thickness direction of the braking body 10 (see FIG. 2). Therefore, the inner end side opening of each air passage 14 of the braking body 10 is not blocked by the slide guide 30 or the like, and there is no fear that the ventilation characteristics of the braking body 10 are impaired by the slide guide 30 or the like.

[Example of change]
In the above embodiment, the front view shape of the guide protrusion 27 in the mounting member 20 is as shown in FIG. 3A, and the internal shape of the engagement recess 33 in the slide guide 30 is as shown in FIG. You may change the shape of the protrusion 27 and the corresponding engagement recessed part 33 like FIG. 6, FIG. 7, or FIG.

  FIG. 6 shows a first modification of the mounting member 20 and the slide guide 30. 6A has a rectangular shape when viewed from the front, and the outer peripheral edge of each guide projection 27 has a straight linear shape orthogonal to the radial direction. The engagement recess 33 in FIG. 6B has a straight back wall 33e corresponding to the outer peripheral edge of the tip of the guide protrusion 27 in FIG.

  FIG. 7 shows a second modification of the mounting member 20 and the slide guide 30. The guide projection 27 in FIG. 7A has a substantially semicircular shape when viewed from the front, and the outer peripheral edge of each guide projection 27 has an arcuate curved shape. The engagement recess 33 in FIG. 7B has a back wall 33e curved in an arc shape corresponding to the outer peripheral edge of the tip of the guide protrusion 27 in FIG.

  FIG. 8 shows a third modification of the attachment member 20 and the slide guide 30. The guide protrusion 27 in FIG. 8A has an isosceles triangle shape when viewed from the front, and the outer peripheral edge of each guide protrusion 27 has a triangular chevron shape. The engagement recess 33 in FIG. 8B has a back wall 33e that recedes in a triangular mountain shape corresponding to the outer peripheral edge of the tip of the guide protrusion 27 in FIG.

The front view of a brake disc. (A) is sectional drawing in the AO-A 'line | wire of FIG. 1, (B) is an expanded sectional view of the site | part enclosed by the round broken line of (A). (A) is a front view of an attachment member, (B) is sectional drawing in the BO-B 'line | wire of (A). The perspective view of a slide guide. The perspective view which shows the lower half when the slide guide of FIG. 4 is divided | segmented up and down along DD line. (A) is a front view showing a first modification of the mounting member, (B) is a perspective view corresponding to FIG. 5 showing a first modification of the slide guide corresponding to the mounting member. (A) is a front view showing a modification example 2 of the attachment member, (B) is a perspective view corresponding to FIG. 5 showing a modification example 2 of the slide guide corresponding to the attachment member. (A) is a front view which shows the modification 3 of an attachment member, (B) is a perspective view equivalent to FIG. 5 which shows the modification 3 of the slide guide corresponding to the attachment member.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Ring-shaped braking body, 11 ... 1st cyclic | annular disc part, 12 ... 2nd cyclic | annular disc part, 13 ... Connection rib, 14 ... Air flow path, 15 ... Inner peripheral part of 1st cyclic | annular disc part (Inner peripheral part of braking body), 20 ... mounting member, 21 ... flange for axle mounting, 22 ... cylindrical wall, 23 ... outer peripheral flange part, 27 ... guide protrusion of outer peripheral flange part, 30 ... slide guide, 33 ... engagement Joint recess.

Claims (3)

Brake disc comprising an annular brake body, a substantially cylindrical mounting member disposed at the center of the brake body, and a plurality of slide guides interposed between the brake body and the mounting member Because
A plurality of guide protrusions protruding outward in the radial direction are provided on the outer periphery of the mounting member,
Each of the plurality of slide guides has an engagement recess into which the guide protrusion of the mounting member can be inserted,
The plurality of slide guides are attached to the plurality of guide projections in a state displaceable in the radial direction by engaging the engagement recesses of the slide guide with the guide projections of the mounting member. The plurality of slide guides are integrated into the brake body by casting in the brake body. The mounting member including the guide protrusion is formed of metal,
The brake disk according to claim 1, wherein the slide guide is made of a heat-resistant resin, ceramic, or a metal different from a constituent metal of the mounting member. The brake body is a ventilated type brake body formed by connecting a first annular disc portion and a second annular disc portion with a plurality of connecting ribs extending in the radial direction between the annular disc portions. Yes,
The plurality of slide guides are integrated with the brake body by being cast in one of the inner peripheral portions of the first and second annular disk portions constituting the brake body. The brake disc according to claim 1 or 2, wherein

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