JPH0569425U - Disc brake rotor - Google Patents

Abstract

(57) [Summary] [Object] The present invention aims to provide a rotor for a disc brake having improved cooling performance. [Structure] A rotor body 1 including an outer disc 2a, an inner disc 2b and a mounting portion 3 is integrally formed by casting,
An inclined inner peripheral surface portion 7 inclined toward the inner peripheral surface of the mounting portion 3 is formed on the inner peripheral surface sides of the outer disk 2a and the inner disk 2b, and the outer disk 2a and the inner disk 2b are formed.
The ribs 5 are curved radially in the wall thickness of the rotor main body 1 in the rotational direction of the rotor body 1, and the inner end 5a of the rib 5 is formed into the inclined inner peripheral surface portion 7.
The ribs 5 and the ventilation holes 6 are formed between the ribs 5,
An inlet hole 6a communicating with the ventilation hole 6 is formed in the inclined inner peripheral surface portion 7 between the projecting inner ends 5a, and an outlet hole 6b communicating with the ventilation hole 6 is formed between the ribs 5 on the outer peripheral surface of the rotor body 1. It is characterized by the configuration.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a disc brake rotor for an automobile or the like.

[0002]

[Prior Art]

 In order to ensure the heat dissipation of the rotor of the disc brake, ribs are radially formed between the outer disc, which is the friction surface, and the inner disc work, and curved in the direction of rotation of the rotor, and air is ventilated between each rib. A hole is formed and air is ventilated by the rotation of the rotor for cooling. (For example, see Japanese Utility Model Laid-Open Nos. 58-11139, 59-85435, and 64-18641).

[0003]

[Problems to be solved by the device]

 The rotor of the conventional disc brake described above is formed on the inner peripheral surfaces of the outer disc and the inner disc toward the inner peripheral surface of the mounting portion, and has ribs protruding linearly on the inner peripheral surfaces of the outer disc and the inner disc that are thick. The disc brake rotor having the ventilation holes formed between the ribs has a difficulty in cooling.

An object of the present invention is to provide a disk breaker rotor that solves the conventional problems of cooling performance.

[0005]

[Means for Solving the Problems]

 To achieve the above object, the present invention is characterized in that a rotor body integrally formed with an outer disc, an inner disc and a mounting portion, an inner peripheral surface side of the outer disc and the inner disc of the rotor body. Is formed radially inside the inclined inner peripheral surface portion formed toward the inner peripheral surface of the mounting portion, the thickness of the outer disc and the inner disc, and is curved in the rotation direction of the rotor body, and the inner end is Ribs protruding from the inclined inner peripheral surface portion, ventilation holes formed between the ribs, inlet holes formed in the inclined inner peripheral surface portion between the protruding inner ends of the ribs and communicating with the ventilation holes, the rotor The outer peripheral surface of the main body is formed between the ribs and includes an outlet hole communicating with the ventilation hole.

[0006]

[Action]

 With the above configuration, the rotor of the disc brake having the heat dissipation structure is obtained, the air is scraped at the inner end of the rib, and the air is guided from the inner peripheral side to the outer peripheral side along the radial rib to improve the cooling property.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 and 2, reference numeral 1 is a rotor body of a disc brake. The rotor body 1 is formed by integrally forming an outer disc 2a, an inner disc 2b, and a mounting portion 3 having a bolt hole 4 by casting.

As shown in FIGS. 3 and 4, slant inner peripheral surface portions 7 are formed on the inner peripheral surface sides of the outer disk 2 a and the inner disk 2 b of the rotor body 1 toward the inner peripheral surface of the mounting portion 3. Has been done.

Ribs 5 are formed radially in the wall thickness of the outer disc 2a and the inner disc 2b and are curved in the rotational direction of the rotor body 1, and the inner ends 5a of the ribs 5 are inclined. It projects to the inner peripheral surface portion 7.

Vent holes 6 are formed in the thickness of the outer disc 2a and the inner disc 2b by the ribs 5 in a radial pattern along the shape of the ribs 5 and curved in the rotation direction of the rotor body 1. There is.

Further, an inlet hole 6a communicating with the ventilation hole 6 is formed in the inclined inner peripheral surface portion 7 between the protruding inner ends 5a of the ribs 5, and the ribs are formed on the outer peripheral surface of the rotor body 1. An outlet hole 6b communicating with the ventilation hole 6 is formed between the five.

According to the present invention, the entire rotor body 1 including the outer disc 2a, the inner disc 2b, the mounting portion 3 having the bolt holes 4, the ribs 5, and the ventilation holes 6 is formed by casting. As described above, the manufacturing and brazing work of each member is unnecessary, and the strength is improved.

Further, since the inlet hole 6a of the ventilation hole 6 is provided in the inclined inner peripheral surface portion 7 of the inner periphery of the outer disc 2a and the inner disc 2b, the air generated by the rotation of the rotor body 1 is in the inclined inner peripheral face portion 7. It flows along the peripheral surface portion 7 and easily enters the inlet hole 6a, and the projecting inner end 5a of the rib 5 serves to attract air into the inlet hole 6a, thereby allowing a large amount of air to flow through the ventilation hole 6 and cooling action. Is to improve.

[0014]

[Effect of the device]

 As described above, according to the present invention, the rotor body composed of the outer disc, the inner disc, and the mounting portion is integrally formed by casting, and is inclined toward the inner peripheral surface of the mounting portion on the inner peripheral surface side of the outer disc and the inner disk. The inclined inner peripheral surface portion is formed, and ribs are radially formed in the thicknesses of the outer disk and the inner disc and curved in the rotation direction of the rotor body, and the inner end thereof is projected to the inclined inner peripheral surface portion, Vent holes are formed between the ribs, an inlet hole communicating with the vent holes is formed in the inclined inner peripheral surface portion between the projecting inner ends of the ribs, and between the ribs on the outer peripheral surface of the rotor body. Since the outlet hole communicating with the ventilation hole is formed, it is possible to provide a disc brake rotor with significantly reduced manufacturing man-hours and improved strength and cooling performance.

[Brief description of drawings]

FIG. 1 is a partial plan view of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

3 is a sectional view taken along line BB of FIG.

FIG. 4 is a sectional view taken along line CC of FIG.

[Explanation of symbols]

 1 Rotor body 2a Outer disk 2b Inner disk 3 Mounting part 4 Bolt hole 5 Rib 5a Inner end 6 Vent hole 6a Inlet hole 6b Outlet hole 7 Inclined inner peripheral surface part

Claims (1)

[Scope of utility model registration request] 1. A rotor body in which an outer disc, an inner disc, and a mounting portion are integrally cast, and formed on the inner peripheral surfaces of the outer disc and the inner disk of the rotor body toward the inner peripheral surface of the mounting portion. A rib formed radially within the wall thickness of the inclined inner peripheral surface portion, the outer disk and the inner disk, and curved in the rotation direction of the rotor body, the inner end of which protrudes into the inclined inner peripheral surface portion, and between the ribs. A vent hole formed, an inlet hole formed in the inclined inner peripheral surface portion between the protruding inner ends of the ribs and communicating with the vent hole, and a vent hole formed between the ribs on the outer peripheral surface of the rotor body. Disc brake rotor composed of a through-outlet hole.