JPH0453470Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a ventilated disk for a vehicle brake system, and more specifically, to an improvement of a squeal-preventing ventilated disk. Used for industrial vehicles, etc.

(Prior Art) As a conventional noise-preventing ventilated disk, there is one as shown in Japanese Patent Publication No. 52-8952. In FIG. including the annular body 11,
The respective outer surfaces of 12 serve as braking surfaces, and both annular bodies 11, 12 are fixed to each other by integral radial ribs 13. Each rib 13 is angularly spaced, with radial ventilation holes 14 provided between adjacent ribs 13, and annular bodies 11,
It extends between the inner and outer edges of 12. A groove 15 with flat parallel side walls 16, 16 is connected to the annular body 1.
1 and 12. each side wall 16,
An annular recess 17, 17 is formed at the radial end of 16 and accommodates an annular string 18, 18 of asbestos. The strings 18, 18 are flat circumferential metal bands 1 having a width suitable for fitting into the grooves 15.
It is held in the recesses 17, 17 by damping elements consisting of 9. Band 19 has an aperture 20 which is aligned with the outer end of vent 14 in the disk.

(Problem to be solved by the invention) When the disk rotates, air flows in from the inner opening of the ventilation hole 14, and the string-like bodies 18, 1
After flowing through the band 19, it is discharged to the outside through the opening 20 of the band 19. Since the distance between the opposing string-like bodies 18, 18 is smaller than the axial distance between the ventilation holes 14, and the area of the opening 20 of the band 19 is smaller than the opening area of the ventilation hole 14,
There is a problem in that the air circulation is not sufficient and the desired cooling effect cannot be expected. Therefore, the present invention has been devised to solve such problems, and provides a noise-preventing ventilated disk that allows good air circulation into the ventilation holes by rotating the disk and has a good cooling effect. .

(Means for Solving the Problems) The present invention provides a groove in the circumferential direction in the center of the outer peripheral end surface of the rib, engages an annular member in the groove, and furthermore, It is a ventilated disk with a notch on the edge.

(Function) Since the present invention has the above-described configuration, when the disc rotates, the air that has flowed into the vent hole is quickly discharged from the outside opening of the vent hole, which has a notch, and the disc generated during braking is removed. The vibration of is damped by the annular member engaged with the groove.

(Embodiment) Figures 1 to 4 show an embodiment of a ventilated disk according to the present invention, in which an inner disk 2 and an outer disk 3 are connected by a large number of ribs 1, 1 extending in the radial direction. Both disks 2,
A large number of ventilation holes 4, 4 are provided by the outer disk 3 and the ribs 1, 1, and the outer disk 3 is connected to a bottomed cylindrical hat portion 5. Circumferential grooves 6, 6 are bored in the center of the outer peripheral end surfaces of the ribs 1, 1, and an annular member 7 made of wire or tube material is engaged with the grooves 6, 6. Opposing notches 8, 8 are provided on the axially side outer end edges of 4, 4, and the outer opening area is equal to or larger than the inner opening area.

When the ventilated disk is rotated, the air in the ventilation holes 4, 4 is rapidly exhausted to the outside through the outer openings having the notches 8, 8 due to centrifugal force, and new air flows in through the inner openings of the vents 4, 4. Then, both disks 2 and 3 are cooled down. In addition, the vibrations of the disks 2 and 3 that occur during braking are transmitted to the annular member 7, which absorbs the vibrations and quickly damps them.

(Effect of the invention) According to the invention, a groove in the circumferential direction is provided in the center of the outer peripheral end surface of the rib, an annular member is engaged with the groove, and the outer edge of the vent hole in the axial direction Since the notch is provided in the disc, air can circulate well into the ventilation hole as the disc rotates, and the cooling effect is good, so a stable braking effect can be obtained. Also, since the annular member is engaged with the groove, the disc Vibrations are quickly damped and squeals that occur during braking can be prevented.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the main part showing the peripheral part of the ventilated disk according to the present invention, Fig. 2 is a plan view showing the main part of Fig. 1, Fig. 3 is a sectional view of the same, and Fig. 4 is the FIG. 3 is a cross-sectional view showing the main part of the conventional ventilated disk, and FIG. 5 is a perspective view of the main part showing the peripheral part of the conventional ventilated disk. 1...Rib, 4...Vent hole, 6...Concave groove, 7...
...Annular member, 8...notch.

Claims (1)

[Claims for Utility Model Registration] (1) In a ventilated disk in which an annular member is provided around the outer peripheral end surface, a groove in the circumferential direction is provided in the center of the outer peripheral end surface of the rib, and the annular member is provided in the groove. A ventilated disk, characterized in that the ventilated disk is engaged with the vent hole, and further has a notch provided at the outer edge of the vent hole in the axial direction. (2) The ventilated disk according to claim 1, wherein the annular member is a wire or a tube.