Disc brake device comprising a passage for brake pads formed between a disc support ring and lateral supports

Abstract

The present invention relates to a braking device comprising an annular brake disc (1) and a support ring (2) for the brake disc (1). The support ring (2) is located on the outside of the brake disc (1), coaxial with the brake disc, and securely fastened to a lateral support (3). The braking device includes a brake caliper (8) that engages the brake disc (1) from the inside, wherein a brake pad (9) is inserted between the caliper (8) and the brake disc (1). The braking device includes a channel (15) for the brake pad (9) formed between the support ring (2) and the lateral support (3).

Description

Technical Field

[0001] This invention relates to a disc brake device.

[0002] The present invention also relates to a wheel motor equipped with such a braking device, and to a motor vehicle having such a wheel motor or such a braking device. Background Technology

[0003] Conventional disc brake systems have certain limitations, especially in terms of maintenance, particularly when replacing brake pads.

[0004] The main drawback of conventional systems where calipers engage the brake disc from the outside is the need to remove the caliper to access the brake pads. This process is not only time-consuming but also requires specific technical expertise, increasing maintenance costs for the end user. Furthermore, frequent caliper removal increases the risk of premature wear on its components, potentially impacting the vehicle's overall safety.

[0005] Furthermore, in configurations where the caliper engages the disc from the inside, it is typically necessary to remove the caliper, and in some cases, the brake disc itself. While the process differs slightly, it shares the same drawbacks in terms of complexity and intervention time, and has similar impacts in terms of cost and potential wear.

[0006] Furthermore, when conventional braking systems are associated with wheel motors, braking components, particularly the brake pads, are often difficult to access due to the presence of the wheel motor, making replacement more laborious and technically demanding, especially since it may potentially require the removal of the wheel motor. This increased complexity can lead to longer vehicle downtime, requires specialized technical skills, and thus increases maintenance costs. Summary of the Invention

[0007] To remedy the problems of the prior art, the object of the present invention is to provide a disc brake device that is used with a wheel motor and makes the brake pads easily accessible, thereby reducing the time required to replace or install the brake pads.

[0008] The present invention relates to a braking device comprising an annular brake disc and an outer support ring, the outer support ring being coaxial with the brake disc and securely fastened to a lateral support member.

[0009] The braking device further includes a brake caliper that engages the brake disc via the inside of the brake disc; and brake pads positioned between the caliper and the brake disc.

[0010] The braking device includes a brake pad channel formed between the support ring and the lateral support.

[0011] This configuration makes the brake pads easily accessible. Furthermore, when the braking system is associated with the wheel motor, this configuration further facilitates access to the brake pads because it eliminates the need to disconnect the wheel motor from the brake disc-caliper assembly, thus reducing the duration and cost of maintenance operations.

[0012] Preferably, the channel includes a notch formed on a first end face of the ring, the notch being axially arranged on the side facing the lateral support and extending over a predetermined angular sector of the circumference of the support ring. This configuration allows for control over the size, position, and shape of the channel.

[0013] According to one feature, the braking device includes a removable component for closing the channel. This braking device allows for controlled closure of the channel.

[0014] According to another feature, the removable shut-off device is positioned between the support ring and the lateral support.

[0015] Preferably, the removable closing device includes a rod that is fastened to a support ring and a lateral support.

[0016] Advantageously, the support ring is axially offset relative to the brake disc toward the lateral support. This configuration makes it easier to manufacture the braking device.

[0017] According to another advantageous feature, the support ring has a first set of secondary notches on its first end face. These secondary notches are spaced apart from each other on the circumference of the support ring and are axially arranged on the side facing the lateral support. This type of support ring benefits from weight reduction while improving ventilation of the disc.

[0018] According to its advantageous features, the support ring has a second set of secondary recesses on its second end face. These secondary recesses are spaced apart from each other on the circumference of the support ring and are axially arranged on the side facing the brake disc. This support ring further optimizes the weight of the ring and the ventilation of the disc.

[0019] According to another aspect, the present invention relates to a wheel motor for a motor vehicle having a braking device as defined above, wherein the lateral support is part of the rotor of the wheel motor.

[0020] According to another aspect, the present invention relates to a motor vehicle that includes at least one braking device as defined above or includes at least one wheel motor as defined above. Attached Figure Description

[0021] Other objects, features, and advantages of the invention will become clear from the following description, given only by way of non-limiting example and with reference to the accompanying drawings, in which:

[0022] [ Figure 1[Illustration 1] is a perspective view of a wheel motor equipped with a braking device according to an exemplary embodiment of the present invention;

[0023] [ Figure 2 ] is along Figure 1 The cross-sectional view taken by line II-II in the diagram;

[0024] [ Figure 3 ]yes Figure 1 A partial perspective view of the wheel motor in the image; and

[0025] [ Figure 4 ]yes Figure 1 A partial side view of the wheel motor in the image. Detailed Implementation

[0026] Figures 1 to 4 A wheel motor for an electrically traction motor vehicle is shown. A wheel motor is a component that incorporates an electric traction motor capable of propelling the vehicle.

[0027] The wheel motor includes a braking device, which includes an annular brake disc 1 and an outer support ring 2 coaxial with the brake disc 1.

[0028] The outer support ring 2 is securely fastened to the lateral support 3 and connected to the brake disc 1. In this case, the lateral support 3 is the rotor 4 of the wheel motor 5. In an embodiment not shown, the lateral support 3 may be part of the wheel rim.

[0029] The lateral support 3 is coaxial with the brake disc 1 and has an annular outer surface 3b, which is radially arranged at the same level as the outer surface 2c of the support ring 2. In other words, the outer surface 3b of the lateral support 3 is radially located on the outer side of the brake disc 1, and the brake disc 1 is supported from the outside by the support ring 2.

[0030] like Figure 2 As shown, the support ring 2 is connected to the brake disc 1 by means of a plurality of connecting elements 6 arranged on the circumference of the support ring 2 and extending in the radial direction. It should be noted that the same or similar elements have the same reference numerals in the various figures.

[0031] Each connecting element 6 is securely fastened to the support ring 2 and housed in the associated cavity 7 so as to be able to slide within the cavity.

[0032] Preferably, each connecting element 6 includes an anchoring portion embedded in the support ring 2 and a protrusion fixed to the anchoring portion and extending radially toward the brake disc 1. Each cavity 7 has a shape complementary to the shape of the radial protrusion of the associated connecting element 6 and is formed radially on the inner side of the brake disc 1. This configuration allows the disc to undergo unrestricted radial thermal deformation.

[0033] Preferably, the anchoring portion of the connecting element 6 is overmolded with the support ring 1, thereby securing them in place. The radial protrusion of the connecting element 6 includes a rod or tube intended to be received within the cavity 7.

[0034] As a variation, the support ring and brake disc can, of course, be secured together by any means known to those skilled in the art (e.g., by means of a nut and bolt assembly).

[0035] The braking device further includes: a brake caliper 8 that engages the brake disc 1 from the inside of the disc 1; and brake pads 9 positioned between the brake caliper 8 and the brake disc 1.

[0036] In this case, the brake disc is ventilated. As a variation, the brake disc can be solid and / or formed in one piece.

[0037] The brake disc 1 includes a first annular plate 1a and a second annular plate 1b that are coaxial and face each other. The first annular plate 1a includes an inner surface 10a that faces the inner surface 10b of the second annular plate 1b. Each annular plate 1a, 1b includes a plurality of ribs 11a, 11b on its inner surfaces 10a, 10b, which are spaced apart from each other in the circumferential direction and extend radially from the outer surface of each plate.

[0038] Ribs 11a of the first plate 1a and ribs 11b of the second plate 1b are arranged opposite each other. Ribs 11a and ribs 11b together form a cavity 7 for accommodating the connecting element 6.

[0039] For easier fastening, the support ring 2 is axially offset relative to the brake disc 1 toward the lateral support 3. The support ring 2 includes a first end face 2a that is axially in contact with the end face 3a of the lateral support 3. The support ring 2 is securely fastened to the lateral support 3 by fastening devices 12 (such as screws or bolts).

[0040] The support ring 2 also includes a second end face 2b facing the first end face 2a. The two end faces 2a and 2b define the axial thickness of the support ring 2.

[0041] In this configuration, the support ring 2 has a second set of secondary recesses 13 spaced apart from each other on its second end face 2b. The secondary recesses 13 are axially arranged on the side facing the brake disc to facilitate ventilation of the brake disc. Preferably, the secondary recesses 13 allow air to flow in and out of the interior of the brake disc 1.

[0042] In this configuration, the support ring 2 has a first set of secondary recesses 14 spaced apart from each other on its first end face 2a. The secondary recesses 14 are axially arranged on the side facing the lateral support member.

[0043] In the variant, it is not necessary to set the secondary notch 13 and / or the secondary notch 14.

[0044] For example, specifically in Figure 3 As can be seen, the braking device includes a channel 15 formed between the support ring 2 and the lateral support 3 and is designed to allow the brake pads 9 to pass through, especially during maintenance operations.

[0045] In this configuration, the channel 15 includes a notch 16 formed on the first end face 2a of the support ring 2. More specifically, the notch 16 is axially arranged on the side facing the lateral support 3 and extends over a predetermined angular sector α of the circumference of the support ring 2. The shape and size of the notch 16 allow the brake pad 9 to pass through the notch 16, and in particular, enable the brake pad to be radially removed from the braking device through the channel 15.

[0046] Preferably, the braking device includes a removable device 17 for closing the channel 15. In this case, the removable device 17 is arranged between the support ring 2 and the lateral support 3 and includes a tube 18 fastened to the support ring 2 and the lateral support 3 and extending axially through the channel 15. In a particular embodiment, the tube 18 is traversed by a screw housed in the hollow central region of the tube 18. Preferably, the removable device 17 participates in providing a connection and in maintaining a predetermined spacing between the support ring 2 and the lateral support 3. Figure 4 It can be seen particularly clearly that the tube 18 is centered on the notch 16 so as to divide the notch 16 into two parts of substantially equal length. In a variant, the tube 18 does not need to be centered on the notch 16. In this case, the notch 16 is divided into two parts of unequal length.

Claims

1. A braking device comprising an annular brake disc (1) and a support ring (2) for the brake disc (1), the support ring (2) being located on the outside of the brake disc (1), coaxial with the brake disc, and securely fastened to a lateral support (3), the braking device comprising a brake caliper (8) engaging the brake disc (1) from the inside of the brake disc (1), the braking device further comprising a brake pad (9) inserted between the caliper (8) and the brake disc (1), characterized in that the braking device comprises a channel (15) for the brake pad (9) formed between the support ring (2) and the lateral support (3).

2. The braking device as claimed in claim 1, wherein, The channel (15) includes a notch (16) formed on the first end face (2a) of the ring (2), the notch (16) being axially arranged on the side facing the lateral support (3) and extending in a predetermined angular sector (α) of the circumference of the support ring (2).

3. The braking device as claimed in claim 1 or 2, comprising a removable device (17) for closing the channel (15).

4. The braking device as claimed in claim 3, wherein, The removable closing device (17) is positioned between the support ring (2) and the lateral support (3).

5. The braking device as claimed in claim 4, wherein, The removable shut-off device (17) includes a tube (18) that is fastened to the support ring (2) and the lateral support (3).

6. The braking device as described in any one of claims 1 to 5, wherein, The support ring (2) is axially offset relative to the brake disc (1) toward the lateral support (3).

7. The braking device according to any one of claims 2 to 6, wherein, The support ring (2) has a first set of secondary recesses (14) on the first end face (2a). The first set of secondary recesses are spaced apart from each other on the circumference of the support ring (2) and are axially arranged on the side facing the lateral support (3).

8. The braking device as described in any one of claims 2 to 7, wherein, The support ring (2) has a second set of secondary recesses (13) on its second end face (2b). The second set of secondary recesses are spaced apart from each other on the circumference of the support ring (2) and are axially arranged on the side facing the brake disc (1).

9. A wheel motor for a motor vehicle, said wheel motor having a braking device as claimed in any one of claims 1 to 8, wherein, The lateral support (3) is part of the rotor (4) of the wheel motor.

10. A motor vehicle comprising at least one braking device as claimed in any one of claims 1 to 8 or comprising at least one wheel motor as claimed in claim 9.

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