JPH04129937U - disk - Google Patents

Abstract

(57) [Summary] [Purpose] To efficiently dissipate the frictional heat generated in the disc during braking into the atmosphere and prevent thermal distortion or cracks from occurring. [Structure] After inserting the annular member 2 into the bottomed cylindrical body 1,
A fixing pin 3 connects the annular member 2 to the bottomed cylindrical body 1. A large number of radial ventilation holes 2d are provided in the annular member 2, the outer peripheral end of the ventilation hole 2d is curved toward the inner sliding surface 2e, and the outer peripheral opening of the ventilation hole 2d is directed toward the inner sliding surface 2e. Make it unevenly distributed. An appropriate number of through holes 4 are provided in the cylindrical portion 1a of the bottomed cylindrical body 1. When outside air flows into the disk, the inner and outer sliding surfaces 2e and 2f of the annular member 2 are forcedly cooled. At the same time, outside air flows into the vent hole 2d, and after forcedly cooling the surface of the vent hole 2d, it quickly flows out into the atmosphere from the outer opening of the vent hole 2d and the through hole 4 of the cylindrical portion 1a.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to the improvement of discs installed in disc brake devices. Yes, used in automobiles, industrial vehicles, etc.

0002

[Conventional technology]

There is a conventional disc as shown in Figure 3, which has a cast iron ring. It is formed from a shaped member 11 and a substantially annular steel plate support member 12, and the outer periphery of the support member 12 is It is a disc whose edge is integrally molded by casting around the outer edge of the annular member 11. 1 is accommodated in the support member 12 to increase the outer diameter of the annular member 11. (For example, Japanese Patent Laid-Open No. 61-41025).

0003

[Problem that the idea aims to solve]

Conventional discs can increase braking torque, heat dissipation area, and heat capacity. Nono, the frictional heat generated in the annular member 11 during braking is trapped in the disc, causing a large amount of heat. Due to poor dissipation into the air, thermal distortion and cracks may occur, reducing braking force. There are some problems. Therefore, this invention was devised to solve such problems. This provides a disk with a large cooling effect.

0004

[Means to solve the problem]

The present invention engages an annular member having a radial ventilation hole with an opening of a bottomed cylindrical body. When the disc is closed, the outer circumferential opening of the vent hole is connected to the inner sliding surface of the annular member. A disk that is unevenly distributed on the side and has an appropriate number of through holes in the cylindrical portion of the bottomed cylindrical body. It is.

[0005]

[Effect]

When outside air flows into the disk, it is forced to blow directly onto the sliding surface of the annular member. It flows into the ventilation hole, and a large amount flows from the outer peripheral opening of the ventilation hole and the through hole of the cylindrical part. It quickly flows out into the air and efficiently cools the annular member.

[0006]

【Example】

Figures 1 and 2 show a disc according to the present invention, and the bottomed cylindrical body 1 is made of steel plate or aluminum cast. The annular member 2 is made of cast iron or a lightweight material such as die-cast aluminum. The annular member 2 is fitted into the bottomed cylindrical body 1, and the bottomed cylindrical body 1 and the annular member 2 by a radial fixing pin 3. The bottomed cylindrical body 1 is formed from a cylindrical portion 1a and a bottom portion 1b. Six protrusions 1c are provided at equal intervals on the edge, and holes 1d are bored at the bases of the protrusions 1c. At the same time, an appropriate number of through holes 4 are provided in the main body of the cylindrical portion 1a. Further bottom 1 b is provided with a mounting hole (not shown) and a center hole 5; The disk is attached to a hub (not shown) via the center hole 5. The annular member 2 includes a pair of opposing inner and outer sliding members 2a, and a pair of opposing inner and outer sliding members 2a. It is formed from a large number of ribs 2b that connect the moving members 2a and six supporting members 2c. The ribs 2b extend radially from the inner circumferential side to the outer circumferential side of both sliding members 2a. do. A large number of radial ventilation holes 2d are formed by both the sliding members 2a and the ribs 2b. , the outer circumferential end of the ventilation hole 2d is curved toward the inner sliding surface 2e, and the outer edge of the ventilation hole 2d is curved toward the inner sliding surface 2e. The circumferential openings are unevenly distributed on the inner sliding surface 2e side. Near the outer opening in the ventilation hole 2d A support member 2c is provided in the support member 2c, six support members 2c are arranged at equal intervals, and the support member 2c is a cylindrical body with a bottom. The annular member 1 fitted into the cylindrical portion 1 is supported by the fixing pin 3 through the hole 1d of the cylindrical portion 1a. Connected to the bottomed cylindrical body 1 by being press-fitted into a hole (not shown) of the holding member 2c. be done.

[0007] When the annular member 2 is pinched by a pad (not shown) during braking, the friction Frictional heat is generated in the annular member 2, and a large flow of outside air flows into the disk and the annular member 2 is heated. The inner and outer sliding surfaces 2e and 2f of the shaped member 2 are forcedly air cooled. Also, at the same time The outside air flows into the vent hole 2d, and after forced air cooling the surface of the vent hole 2d, the outside air flows into the vent hole 2d. It quickly flows out into the atmosphere from the outer peripheral side opening and the through hole 4 of the cylindrical portion 1a. At this time , frictional heat is generated on the ventilation hole 2d surface of the annular member 2, the inner and outer sliding surfaces 2e, 2 f is dissipated into the atmosphere, and the disk is efficiently cooled.

[0008]

[Effect of the idea]

According to the present invention, the opening on the outer peripheral side of the ventilation hole is unevenly distributed on the inner sliding surface side of the annular member. At the same time, an appropriate number of through holes are provided in the cylindrical part of the bottomed cylindrical body, so that frictional heat is transferred to the atmosphere. Dissipates heat efficiently, does not cause thermal distortion or cracks, and has remarkable cooling and braking effects. Improve yourself. Also, since the engagement area between the bottomed cylindrical body and the annular member increases, assembly becomes easier. The strength of the disc increases.

[Brief explanation of drawings]

[Fig. 1] Side view showing a disk according to the present invention

[Figure 2] Cross-sectional view of the same disk

[Figure 3] Cross-sectional view showing a conventional disk

[Explanation of symbols]

1 Bottomed cylindrical body 1a Cylindrical part 2 Annular member 2c Support member 2d ventilation hole 2e Inner sliding surface 3 Fixed pin 4 Through hole

Claims (2)

[Scope of utility model registration request] Claim 1: In a disk in which an annular member having a radial ventilation hole is engaged with an opening of a bottomed cylindrical body, the opening on the outer peripheral side of the ventilation hole is unevenly located on the inner sliding surface side of the annular member. Additionally, a disk characterized in that a suitable number of through holes are provided in the cylindrical portion of the bottomed cylindrical body. 2. The disk according to claim 1, wherein the encircling member is connected to the bottomed cylinder by a fixing pin and a support member.