JPS62261723A - Brake by-product deflector in assembly of wheel and disk brake - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] -3-1 The present invention relates to a wheel and disc brake assembly and a deflector plate used therein.

[Prior Art] One of the problems with disc brakes for automobiles, especially foreign cars, is that
During braking, a large amount of by-products are generated and adhere to the axially outer side of the wheels, forming a surface layer that spoils the appearance of the vehicle. Furthermore, overheating reduces braking efficiency,
Causes excessive friction.

Hibbard's U.S. Patent No. 2,8 titled "Wheel Structure"
The invention of No. 51,131 relates to an assembly of an automobile wheel and an annular cover having ventilation holes.

The vent has an alignment scoop and louvers for delivering cooling air to the brake structure.

The cover is essentially a modified external hubcap.

Hibbard's US Patent No. 2 entitled "Wheel Structure."
No. 940,555 (1981) relates to an assembly of a motor vehicle wheel and an improved toroidal cover having ventilation holes for delivering cooling air to a brake structure.
This is also essentially a modified external hubcap.

U.S. Patent No. 3.0 of Rion entitled “Wheel Structure”
The invention of No. 28.936 (1982) relates to an exterior cover for a motor vehicle wheel that is decorative and provides cooling air to a brake assembly.

Wheel covers of the press-on, pry-off type are provided with a circumferential air scoop for cooling the wheel structure having an opening. But it's also essentially a modified external hubcap.

U.S. Pat. No. 4,005,788 (19
1977) is called "Dust Shield for Disc Brakes," and this semicircular dust shield is designed to protect disc brakes from road dust or water. The shield has a hole with an annular lip that allows air to flow around the rotor to cool it. The shield is a semi-circumferential, two-layer device that is integrally mounted adjacent to the inner surface of the brake. However, this device does not include any elements to protect the wheels from brake by-products (scum).

Bottieri Canadian Patent No. 1,141,801 (1
983) entitled "Shield Plate in Wheel and Disc Brake Assembly", this invention relates to a thin metal deflector plate clamped between the wheel spider of an automobile and the rotor of the disc brake of that wheel. . This plate covers the axially inner side of the wheel spider and prevents by-products generated from the disc brake from adhering to the wheel and damaging its appearance. In this way, it is designed from the perspective of not being visible from the outside of the car.

Bottieri U.S. Patent No. 4,484.6137 (1
No. 984) entitled "Shield Plate in Wheel and Disc Brake Assembly", this invention relates to an improvement of Bottieri's Canadian Patent No. 1,141,801. This improvement has two features aimed at making it possible to more universally install the same deflector shield on the wheels of various motor vehicles. That is, the universal mounting hole pattern and the slit at the outer end -L allows the same dust shield to be mounted on several different wheels. This versatile mounting possibility prevents brake by-products from building up on the outside of the tire, while reducing price and consumer costs. This is also designed to be invisible from cars and the outside.

However, none of the above prior art teaches a practical byproduct deflector and cooling air scoop combination. The present invention is a dual function byproduct deflector and cooling system designed to be invisible from the exterior of the vehicle.

[Summary of the Invention] The present invention combines a deflector plate and an air scoop in a known manner to prevent by-products generated from the brakes from reaching the outside of the wheel and to direct cooling air toward the brakes. Concerning a brake by-product deflector that blows organisms off the wheels.

According to a preferred embodiment of the invention, the deflector plate is clamped between the brake rotor and the axially outer side of the wheel spider. This deflector plate is spaced axially outwardly from the brake disc and covers the inside of the wheel (inside the spider) to prevent by-products generated by braking from reaching the outside of the wheel spider. 4
Two or more slots are cut into the deflector plate and act as air scoops that deliver cooling air to the brakes and blow brake by-products away from the wheels.

The primary object of the present invention is to prevent brake by-products from adhering to the exterior of the wheels by blowing the brake by-products away from the wheels, and to provide an improved system having a novel structure for directing cooling air to the brakes. The purpose of the present invention is to provide a by-product deflector.

In a first embodiment of the invention, a motor vehicle wheel is provided having an annular tire support and a spider extending inwardly from the rim to the axle.

The spider has a plurality of holes spaced inwardly from the rim.

A disc brake having a caliper with brake pads is spaced axially inwardly from and facing the spider and is carried by a brake rotor clamped to the spider.

The brake disc generates brake byproducts on the side facing the spider due to friction generated between the brake pad and the brake disc during braking. An improvement of the invention is to have a deflector plate clamped between the wheel spider and the brake rotor axially outward from the brake caliper and disc brake. The deflector plate blocks the axially inner side of the wheel spider from the brake caliper and prevents brake by-products generated by friction from passing through the spider and from the brake to the wheel portion outside the spider.

Yet another improvement is to have more than four slots rotationally cut into the byproduct deflector. These slots act as air scoops as the vehicle moves forward, delivering cooling air to the brakes and blowing brake by-products away from the wheels.

A second embodiment is described in Bottieri U.S. Pat. No. 4.484.
, No. 687. This is a deflector plate with slits that extend inwardly from the deflector plate to provide flexible elastic fingers that provide a snug fit even for wheels that may have an inner diameter different from the nominal value. can fit. The deflector plate has holes therethrough for varying numbers of studs to be fitted with nuts for clamping the wheel and deflector plate to the brake rotor. The improvement is to cut four or more slots into the deflector plate that act as air scoops to deliver cooling air to the brakes and blow brake by-products away from the wheels.

Other objects of the invention will become apparent from the following description and claims, and with reference to the accompanying drawings, in which corresponding parts are designated by the same reference numerals.

[Examples] The present invention will be illustrated by the following examples, but it should be noted that the present invention is not limited to these specific examples and that other examples are also possible. Further, the terms used in this specification are for explaining the present invention, and are not intended to limit the invention.

Referring to FIG. 3, the assembly of the present invention includes wheels and conventionally shaped disc brakes. In FIG. 3, the right side is the axially outer side (visible side) of the wheel. The wheel has an annular rim lO supporting an inflatable tire (not shown) and a spider 11 fixed to the inside of the rim lO and extending generally radially inwardly therefrom. The wheel spider has a central opening 12 that extends spaced around a bub 13 of a brake rotor 14 . The wheel spider is also formed with a plurality of circumferentially spaced arcuate holes 11a for design and strength purposes. (Figure 2).

On the axially outer side of the wheel spider 11 (on the right side in FIG. 3), the brake rotor has a cap 15 that covers the end of the steering knuckle stub shaft (not shown).
The brake rotor is rotatably mounted on the stub shaft by an anti-friction bearing. The brake rotor 14 is located inside the central opening 1 in the axial direction (on the left side in FIG. 3) of the wheel spider ll.
It has a cylindrical side wall 1B with a diameter substantially larger than 2. This cylindrical side wall 16 is connected to the hub 1 of the brake rotor.
It is integrally connected to the knob 13 by a flat annular wall 17 extending radially between the two.

A plurality of circumferentially spaced threaded studs 18 project axially outwardly from the radial wall 17 of the brake rotor. These studs pass through corresponding holes 19 in the wheel spipe 11. A nut 20 is threaded onto the stud 18 to secure the brake rotor 14 to the wheel.

A brake disc 21 is fixed to a segment 22 having a slightly larger diameter and provided at the axially inner end of the cylindrical side wall 1B of the brake rotor 14.

Disc brake caliper 23 supports friction pads that engage brake disc 21 in a known manner. The brake caliper is attached to the vehicle body by suitable means so as not to rotate, while the brake caliper is attached to the vehicle body by suitable means, and the brake caliper is attached to the vehicle body by suitable means so as not to rotate.
Brake rotor 14 and brake disc 21 rotate together.

According to the invention, the disk-shaped deflector plate 24 shown in FIG.
is pressed between the spider 11 and the radial wall 17 of the brake rotor. Slot 40 in deflector plate 24
is formed, forming an air scoop that supplies cooling air to the brakes while the car is in motion. The air also blows brake byproducts away from the wheels. As shown in FIG. 3, the annular outer circumference 25 of this deflector plate engages the inner side of the annular outer circumference 11b of the spider 11, where the spider outer circumference 11b is connected to the rim IO. The deflector plate 24 is formed with a plurality of openings 2B that align with the openings 19 of the spider 11, and the studs 18 on the brake rotor pass through these openings. The deflector plate 24 also has a circumferential central opening 27 through which the hub 13 of the brake rotor passes.

As shown in FIG.
It extends completely along the inner surface of the

Otherwise, the spider 11 would be exposed to the wear debris produced when applying the disc brakes. The deflector plate prevents wear debris from scattering from the opening 11a of the spider and adhering to the wheel on the axially outer side of the spider.

FIG. 4 shows an enlarged view of the improvements of the present invention. Maximum depth approx. 1
Four or more /4 inch slots 40 are cut into the deflector plate to form scoops. The direction of the slot opening is such that the raised portion of the scoop faces outward in the direction of travel of the wheel.

Figure 5 is Bottieri's U.S. Patent No. 4.484, 6g7.
A second embodiment of the present invention is shown as an improvement of the above issue.

According to the invention, the outer segment 3B of the deflector plate
A slit 37 is formed in. The slit 37 extends inwardly from the circumferential outer end 38 of the outer segment 36 and provides a flexible to resilient arcuate finger 39. The fingers 39 facilitate the insertion of the deflector plate 25 into wheels whose diameter varies somewhat depending on the type.

Another important feature of this embodiment is that the seven holes 27-33 in the deflector plate have respective arcuate dimensions, making it possible to install the deflector plate on the wheels of several types of passenger cars. It is in a position where it is possible to do so. For example, as shown in FIG.
4 wheel studs 1 through ゜28, 30 and 32
8. Another type of wheel has two idle pins in addition to the four wheel studs. These guide bins are received in holes 29 and 33 in the deflector plate. FIG. 5 shows a further wheel with a deflector plate having five wheel studs spaced circumferentially at 72° intervals and passing through holes 27.2g, 29.31 and 32 in the deflector plate. Shows how it is attached.

As is apparent from FIG. 5, holes 28 and 82 are equally arcuately spaced on either side of hole 27, each having a sufficient arcuate distance to extend less than 90'' beyond 72@ from hole 27. Hole 29 is on the opposite side of hole 27 from hole 2B and is less than 72'' from hole 28. The relationship between hole 81 and hole 82 is also similar. Hole 30 is located diametrically opposite hole 27. Further, the hole 33 is located on the opposite side of the hole 29 in the diametrical direction.

An improvement of the present invention is that the deflector plates are cut into four scoops up to about 1/4 inch.
It is to have more than one slot 40. Further, the hole is oriented such that the raised portion of the scoop faces outward in the direction of travel of the wheel.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the deflector of the present invention, FIG. 2 is an external view of a wheel and disc brake assembly equipped with the deflector of the present invention, and FIG. 3 is a line 3-- 3
4 is a longitudinal cross-sectional view of this assembly along line 4--4 of FIG. 2 showing an enlarged view of the air slot.
FIG. 5 is a cross-sectional view along Bottieri's U.S. Patent No. 4.484.8g7.
FIG. 6 is a perspective view of a second embodiment of the present invention used with the universal heavy-duty dust shield of No. 1, and FIG. 6 is a partial longitudinal section showing a modified example of the wheel, disc brake, and deflector plate assembly of the present invention. It is a diagram. IO...Rim, ll...Spider, 13...Hub, 14...Brake rotor, 18...Stud, 21...Brake disc, 23...Caliper, 24...Deflector plate , 26...hole,
27-33...hole, 40...slot. Patent Application Agent Patent Attorney Shuta Sekine Procedural T7
J] Sansho (Method) August 25, 1986

Claims (5)

[Claims] (1) (a) a wheel having an annular tire support rim and a spider extending inwardly from the rim, the spider having a plurality of holes spaced inwardly from the rim; and (b)
An assembly having a caliper having a brake pad and a disc brake having a brake rotor clamped to the spider and carrying a brake disc facing the spider and spaced axially inwardly from the spider. , a deflector plate clamped between the spider and the brake rotor axially outward from the brake disc, the deflector plate being radially outward from the clamping position with the brake rotor, the deflector plate being axially outwardly of the spider; The deflector plate covers the inner side of the tire support rim, thereby preventing brake by-products generated by friction from escaping from the brake through the spider to a portion of the wheel outside the spider. a scoop having a circumferential outer end slidably engaging the inside of said wheel at said deflector plate and having four or more slots cut into said deflector plate to face the outside of the vehicle in the forward direction of the vehicle; forming an air flow through the slot and over the brake, thereby blowing by-products away from the wheel;
and having mounting holes that match the appropriate alignment of the wheel studs. (2) (a) a wheel having an annular tire support rim and a spider extending inwardly from the rim, the spider having a plurality of holes spaced inwardly from the rim; and (b)
) A by-product for use with a disc brake having a caliper with a brake pad and a brake rotor clamped to the spider and carrying a brake disc facing the spider and spaced axially inwardly from the spider. In a deflector, a central portion of the deflector is clamped to the spider and a brake rotor axially outwardly from the brake disc, and the deflector plate extends radially outwardly from the central portion to The deflector plate covers the inner side in the axial direction to prevent brake by-products generated by friction from adhering to the outer side in the axial direction of the spider, and the deflector plate is slidable on the inner side of the wheel at the position of the tire support rim. four or more slots are cut into said deflector plate having engaging circumferential outer ends to form a scoop facing outwardly of the vehicle in the direction of vehicle forward movement, such that air can pass through said slots; through and over the brakes, thereby blowing by-products away from the wheels;
and a by-product deflector having mounting holes that match the appropriate alignment of the wheel studs. (3) In the deflector plate according to claim 1 or 2, (a) four wheel studs protrude axially outward from the brake rotor in order to fix the spider to the brake rotor; A deflector plate having holes arranged to selectively pass through (b) five wheel studs, or (c) four wheel studs and two guide pins. (4) In the deflector plate according to claim 32, the holes are located at intervals of 72° on the circumference.
A deflector plate characterized in that it has two arcuate holes and two additional arcuate holes located diametrically opposite each of the twenty-five holes. (5) The deflector plate according to claim 1, wherein circumferentially spaced slits extend inwardly from the outer end, thereby allowing continuous flexibility along the circumference of the deflector plate. A deflector plate characterized in that it provides elastic fingers.