Disc brake assembly and motor vehicle comprising such an assembly

Abstract

Disc brake assembly and motor vehicle comprising such an assembly. The invention relates to a disc brake assembly (1) of a braking system of a motor vehicle, comprising a brake disc (3) fixed to a wheel hub of said vehicle and a brake caliper (7) supporting brake pads (13) mounted on either side of said brake disc (3). According to the invention, the disc brake assembly (1) comprises a protective film (15) for said brake disc (3) arranged between at least one of said brake pads (13) and said brake disc (3). The invention also relates to a motor vehicle comprising such a disc brake assembly (1). Figure 2

Description

Title of the invention: Disc brake assembly and motor vehicle comprising such an assembly technical field

[0001] The invention relates to the field of motor vehicles, and concerns a disc brake assembly of a braking system of a motor vehicle.

[0002] The invention also relates to a motor vehicle comprising such an assembly. Previous technique

[0003] A disc brake assembly of a motor vehicle braking system comprises a brake disc, fixed to a wheel hub of the vehicle, and a brake caliper supporting brake pads mounted on either side of the brake disc.

[0004] The brake pads are capable of being moved towards the brake disc by the action of a piston supplied by a hydraulic fluid from a hydraulic circuit of the braking system when braking is requested by a user.

[0005] Thus, when braking is requested by a user, the hydraulic fluid arrives under pressure in the piston, causing the brake pads to clamp against the brake disc.

[0006] In a vehicle equipped with a disc brake assembly on the rear axle of the vehicle, when the vehicle's parking brake is applied for a long period of time, for example when the vehicle is stored from the factory until it is put into service, the brake pads of the rear disc brake assemblies may stick to the brake discs, leaving marks on the brake discs.

[0007] This can generate unwanted noise when the vehicle is moving, which is annoying for the user.

[0008] Also, this can affect the performance of brake discs on which brake pads have left traces. Description of the invention

[0009] The present invention aims to overcome the aforementioned drawbacks, and for this purpose relates to a disc brake assembly of a braking system of a motor vehicle, comprising a brake disc, fixed on a hub of a wheel of said motor vehicle, and a brake caliper, supporting brake pads mounted on either side of said brake disc, notable in that it comprises a protective film of said brake disc arranged between at least one of said brake pads and said brake disc.

[0010] Thus, by providing for the equipping of a disc brake assembly with a protective film for the brake disc, arranged between at least one of the pads and the brake disc, the brake pads are no longer in direct contact with the brake disc.

[0011] This prevents the brake pads from sticking to the brake disc when the vehicle's parking brake is applied for a long time, for example when the vehicle is stored from the factory until it is put into circulation.

[0012] This prevents the formation of marks on the brake discs while allowing proper operation of the parking brake.

[0013] Thanks to the present invention, brake pads and discs are thus preserved in their new condition until the vehicle is put into circulation, which improves driving pleasure and makes braking performance optimal and durable.

[0014] According to optional features of the disc brake assembly according to the invention: - said protective film is fixed to said at least one of said brake pads; - said protective film includes a protective face of geometric shape complementary to that of at least one of said brake pads; - said protective face of said protective film is self-adhesive; - the thickness of said protective face of said protective film is between approximately 0.05m and approximately 0.15mm; - said protective film includes a removal tab extending prominently relative to said protective face.

[0015] The invention also relates to a motor vehicle comprising a braking system comprising at least one disc brake assembly, notable in that said disc brake assembly is according to the invention. Brief description of the drawings

[0016] Other features, purposes and advantages of the invention will become apparent from the following detailed description, for the understanding of which reference should be made to the accompanying drawings in which:

[0017] [Fig-1] is a perspective view of a disc brake assembly according to the invention.

[0018] [Fig.2] is a longitudinal cross-sectional view of the brake assembly shown in tight position.

[0019] [Fig.3] is a side view of the brake assembly. Description of the implementation methods

[0020] In the following description, elements having an identical structure or analogous functions are designated by the same reference.

[0021] Reference is made to [Fig.1] showing a disc brake assembly 1 seen in perspective and to [Fig.2] which is a longitudinal sectional view of the brake assembly 1, shown in the engaged position.

[0022] Brake assembly 1 is part of a braking system (not shown) of a motor vehicle (not shown).

[0023] Assembly 1 includes a brake disc 3, fixed to a hub 5 of a wheel (not shown) of the vehicle.

[0024] The disc brake assembly 1 is primarily intended to equip the rear axle of the motor vehicle, on which the parking brake is applied.

[0025] The disc brake assembly 1 includes a brake caliper 7 mounted on a steering knuckle 9 by means of a caliper bracket 11 fixed to the steering knuckle 9.

[0026] The brake caliper 7 supports brake pads 13, mounted on either side of the brake disc 3.

[0027] The brake pads 13 are capable of being moved towards the brake disc by the action of a piston (not shown) supplied by a hydraulic fluid from a hydraulic circuit (not shown) of the braking system when braking is requested by a user or when the vehicle's parking brake is activated.

[0028] Thus, when braking is requested by a user, the hydraulic fluid arrives under pressure in the piston, causing the brake pads 13 to clamp against the brake disc.

[0029] According to the invention, the brake assembly 1 comprises a protective film 15 of the brake disc 3, arranged between the brake pads 13 and the brake disc 3.

[0030] Thus, when the vehicle's parking brake is engaged for a long period of time, for example when the vehicle is stored from the factory until it is put into circulation, the brake pads 13 are no longer in direct contact with the brake disc 3.

[0031] In this way, the brake pads 13 are prevented from sticking to the corresponding brake disc 3.

[0032] This prevents the formation of traces on the brake discs 3 of such a disc brake assembly 1, while allowing proper operation of the parking brake.

[0033] Thanks to the present invention, the brake pads 13 and discs 3 are thus preserved in their new condition until the vehicle is put into service. Driving pleasure is therefore improved and braking performance is optimal and long-lasting.

[0034] In the embodiment illustrated in the figures, two protective films 15 are arranged between the brake pads 13 and the brake disc 3. However, the assembly 1 according to the invention may comprise only one protective film 15, arranged between one of the two brake pads 13 and the brake disc 3.

[0035] In one embodiment, the protective film 15 is fixed to the corresponding brake pad 13, for example by gluing.

[0036] In one embodiment, the protective film 15 comprises a protective face 17 of which Its geometric shape is essentially complementary to that of the corresponding brake pad 13.

[0037] In one embodiment, the protective face 17 of the protective film 15 can be self-adhesive, which allows for quick positioning of the protective film 15 between the brake pad 13 and the brake disc 3, for example on the corresponding brake pad 13.

[0038] In one embodiment, the material of the protective film 15 is designed to allow sufficient clamping of the brake pads 13 against the brake disc 3 to allow proper operation of the parking brake.

[0039] For example, the thickness of the protective face 17 of the protective film 15 is between about 0.05m and about 0.15mm, for example about 0.10mm.

[0040] Reference is made to [Fig.3] showing brake assembly 1 seen from the side.

[0041] The protective film 15 may include a removal tab 19.

[0042] The withdrawal tab 19 extends, for example, prominently relative to the protective face 17.

[0043] The protective film 15 can for example be positioned between the brake pads 13 and the brake disc 3 at the time of design of the brake assembly 1.

[0044] In particular, when the protective film 15 is fixed to the brake pads 13, the fixing of the protective film 15 can take place during the production of the brake pads 13.

[0045] The protective film 15 is removed before the vehicle is put into circulation, for example by a car dealer.

[0046] As will be understood, the present invention is not limited to the embodiments of this disc brake assembly of a motor vehicle braking system and of this motor vehicle comprising such a disc brake assembly, described above solely by way of illustrative examples, but on the contrary it encompasses all variants involving the technical equivalents of the means described as well as their combinations if these fall within the scope of the invention.

Claims

Demands

1. Assembly (1) of a disc brake of a motor vehicle braking system, comprising a brake disc (3), fixed on a hub (5) of a wheel of said motor vehicle, and a brake caliper (7), supporting brake pads (13) mounted on either side of said brake disc (3), characterized in that it comprises a protective film (15) of said brake disc (3) arranged between at least one of said brake pads (13) and said brake disc (3).

2. Assembly (1) of disc brake according to claim 1, characterized in that said protective film (15) is fixed on said at least one of said brake pads (13).

3. Assembly (1) of disc brake according to any one of claims 1 or 2, characterized in that said protective film (15) comprises a protective face (17) of geometric shape complementary to that of said at least one of said brake pads (13).

4. Assembly (1) of disc brake according to claim 3, characterized in that said protective face (17) of said protective film (15) is self-adhesive.

5. Assembly (1) of disc brake according to any one of claims 3 or 4, characterized in that the thickness of said protective face (17) of said protective film (15) is between about 0.05m and about 0.15mm.

6. Disc brake assembly (1) according to any one of claims 3 to 5, characterized in that said protective film (15) has a retraction tab (19) extending prominently relative to said protective face (17).

7. Motor vehicle comprising a braking system comprising at least one assembly (1) of disc brake, characterized in that said assembly (1) of disc brake is according to any one of claims 1 to 6.

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