JPS6040831A - Cooling device for disc brake - Google Patents

Abstract

PURPOSE:To improve the cooling effect of a disc plate, by a method wherein a running air is introduced into one side of the disc plate, and an air guide cover, which guides the running air to the opening of an air guide passage, is provided. CONSTITUTION:An air guide cover 26 is spaced from and positioned opposite to the outer side of a hub 8, the outer peripheral part thereof is positioned in the vicinity of the inner peripheral part of a disc rotor 19, i.e., the outside of an opening 22 on the inner periphery side of an air guide passage 21, and an air guide passage 31, through which a running air introduced through an introducing port 29 is guided in the direction of the inside of the air guide passage 21, is formed between the inside of the air guide passage 21, is formed between the air guide cover 26 and the hub 8. A running air is guided through the air guide passage 31 in the direction of the opening 22 on the inner periphery side of the air guide passage 21 in a disc plate 16. Since a duct part 28, connected to the introducing port 29, is gradually throttled, a running air is increased in velocity of the air, and is forcibly fed into the air guide passage 21 in the disc plate 16. This improves a cooling effect by the use of the necessary minimum gap between the disc rotors 18 and 19.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a disc brake used, for example, in a motorcycle, and more particularly, to a cooling device for cooling the disc plate thereof.

For example, as a disc brake for vehicles such as motorcycles,
In order to improve anti-fade performance, the disc plate is constructed by stacking multiple disc rotors, and an air guide path with a certain gap is formed between these rotors, and the vehicle travels through this air guide path. A so-called ventilated disc brake is known, which uses wind to enhance the cooling effect of the disc plate.

However, in this case, if the gap between the disc rotors is narrow, the flow of running air in the guide path will be poor, so it is not possible to expect a significant improvement in the cooling effect compared to a general solid disc. If the above-mentioned gap is widened to increase the passage area of the air guide path, the thickness of the disc plate will increase, causing problems such as an increase in the size of the disc brake.

The present invention was made based on these circumstances, and since it is an fc type, it is possible to improve the cooling effect without increasing the wall thickness of the disk plate, and it is possible to make the disk plate thinner and smaller. The purpose of the present invention is to provide a cooling device for a disc brake that can fully demonstrate its original performance.

That is, in order to achieve the above object, the present invention provides a wind guide cover on one side of the disc plate to take in the running wind and to guide the running wind toward the opening of the air guide path in the disc plate. The vehicle is characterized in that the traveling wind is forcibly blown into the air guide path.

An embodiment of the present invention will be described below based on drawings in which the present invention is applied to a front wheel of a motorcycle.

FIG. 1 shows a front wheel of a motorcycle. Reference numeral 1 denotes a frame, and a head pipe 2 of the frame has a front fork 4 pivotally supported by a handlebar 3 for steering operation. An axle 6 is installed between the lower ends of the left and right outer teeth 5, 5 constituting the front fork 4, and this axle 6 rotatably supports a front wheel 7. As shown in FIGS. 3 and 4, this front wheel 7 has a knob 8 and a rim 9.
and a plurality of spokes 10 connecting these two are integrally molded, for example, from an aluminum alloy, etc., and the axle 6 is placed inside the boss portion 1 of the hub 8.
2 and 12. A collar 13.13 is mounted on the outer periphery of the axle 6, located between the bearing 12.12 and the outer cheek +515.
A spacer 14 is interposed between the bearings 12 and 12.

By the way, a disc brake 15.15 for braking the front wheel 7 is attached to the stone-side side surface of the S brake 8 (above). Since these disc brakes 15 and 15 have the same structure, ``To explain one side as a representative, 16 is an annular disk plate, which is fastened to the side of the hoop 8 through screws 7. It rotates together with the front wheel 7. This disc plate 16 is constructed by stacking two disc rotors J8 and 19 in the thickness direction, and the abutment surface of the disc rotor 19 located on the outside has an involute curve shape. A large number of curved fins 20 are provided projecting at intervals in the circumferential direction.

And disc cloak Ig, 19 is mutually fin 20
... are spaced apart by the protruding height of the disk rotors 1B, 19, and the fins 20..., and air guides of a constant width opening at the inner peripheral end surface and the outer peripheral end surface of the disk plate 16 are provided between the disc rotors 1B, 19 and the fins 20. A path 21 is formed. Therefore, when the disc brake 16 is rotated together with the front wheel 7, its centrifugal action causes the inner opening 22 of the air guide path 21 to
Outside air is sucked in through the outer peripheral side opening part 2.
3 to the outside, so that outside air flows through the air guide path 21 from the inside in the radial direction of the disk plate 16 to the outside. Also, the above Narrator tube 5,5
On the rear surface, a caliper 2 is mounted across the disc plate 16.
4 is attached to 9. Uzf pads 25.25 are housed in the caliper 24, and these pads 25.2
By squeezing the disc plate 16 between the discs 5 and 5, frictional resistance is applied to the disc plate 16 and braking force is generated.

Therefore, on the outside of the hub 8, there is a disc plate 1.
An air guide cover 26 is attached to the inner circumferential side of the air conditioner 6. The air guide cover 26 has a disc shape, and the axle 6 passes through a through hole 27 formed in the center thereof, and the opening periphery of the through hole 27 is connected to the outer tube 5.5 and the collar 13. It is clamped and fixed between .13 and .13. The wind guide cover 26 is formed with a duct portion 28 that is located in front of the outer tubes 5, 5 and extends to the side. Nine wind takers form an inlet 29. As shown in FIG. 4, the outer wall 30 of the duct portion 28 is inclined toward the disk plate 16 as it goes rearward, and the passage within the duct portion 28 is gradually narrowed. In addition, the air guide cover 26 is connected to the hub 8.
The outer circumferential portion thereof is located close to the inner circumferential portion of the outer disk rotor 19, and the outer circumferential side of the inner circumferential opening 22 of the air guide passage 21. An air guide passage 3 is formed between the air guide cover 26 and the hub 8 to guide the traveling wind taken in from the introduction port 29 into the air guide passage 2.

According to such a configuration, the inlet 29 during running takes in the running wind around the front wheels 7 as shown in FIG. The air is guided through the air guide passage 31 between the air guide passage 26 and the hub 8 toward the inner peripheral side υ opening 22 of the air guide passage 21 in the disk plate 16 . At this time, since the duct portion 28 connected to the introduction p29 is gradually narrowed, the traveling wind is forcibly sent into the air guide path 2 in the disc plate 16 at an increased wind speed. .

Therefore, the flow of running air within the air guide path 2 is good, and there is no need to widen the gap between the disc rotors 1B and 19 in order to improve the flow of air as in the conventional case. As a result, the cooling effect of the disk plate 16 can be enhanced with the minimum necessary gap, and the inherent performance of the penteleate disk can be fully exhibited. Furthermore, the thickness of a conventional pentillate having equivalent cooling performance can be made thinner, and therefore the attachment to the hub 8 can be made narrower, making it possible to downsize.

By the way, the disc brake cooling device according to the present invention is not limited to m1 wheels of motorcycles, but can be applied to rear wheels as well, and can be applied not only to motorcycles but also to other vehicles. Applicable.

According to the present invention described in detail above, since the air guide cover forcibly guides the traveling wind into the air guide path in the disc plate, the flow of the traveling air in the air guide path becomes good, and the disc plate This increases the cooling performance of the rotor, making it possible to fully improve anti-fade performance.In addition, there is no need to widen the gap between the rotors to improve airflow, which is an advantage in that the disc plate can be made thinner and smaller. .

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which FIG. 1 is a side view of a front section 9 of a motorcycle, FIG. 2 is a side view, and FIG. 3 is a side view of a front section 9 of a motorcycle.
A sectional view taken along the line 1-111 in the figure, Figure 4 is a tv in Figure 2.
It is a sectional view along the -tv line. 7...Wheel (front wheel), 15...Disc brake,
16... Disk plate, 18.19... Disc rotor, 2... Air guide path, 26... Air guide cover. Applicant's agent (Takehiko Suzue Figure 1)

Claims (1)

[Claims] In a disc brake that rotates integrally with the wheel and is composed of a plurality of overlapping disc rotors, and an air guide path is formed between these disc rotors through which running air flows, one side of the disc plate is A cooling device for a disc brake, characterized in that a cooling device for a disc brake is provided, which is provided with a wind guide cover that takes in running wind and introduces the running wind into the air guide path.