Floating brake disc

Abstract

A floating brake disc (1), comprising: a brake ring (4) configured as an annular member capable of rotating about a central rotation axis, wherein the central rotation axis defines an axial direction (X-X), a radial direction (R-R) and a circumferential direction (C-C) of the floating brake disc; a disc cap (2) configured to have a top cover portion (22) and a skirt portion (24) extending substantially along the radial direction, wherein the skirt portion defines an annular outer peripheral surface (26) of the disc cap extending along the circumferential direction, and the disc cap is detachably attached to, via the annular outer peripheral surface, an annular inner ring (46) of the brake ring extending along the circumferential direction, and can move between an attaching position and a separating position relative to one side of the brake ring along the axial direction; and an annular elastic biasing member (6), wherein when the disc cap is located at the attaching position, the elastic biasing member is provided between the disc cap and the brake ring along the circumferential direction, abuts against the disc cap and applies biasing force to the brake ring along the axial direction. The stresses in the axial direction and the radial direction during the operation of the brake disc can be eliminated, so that the service life of the brake disc is prolonged.

Description

floating brake disc

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application number 202410013670.0, filed with the State Intellectual Property Office of China on January 4, 2024, and entitled “Floating Brake Disc,” the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to a floating brake disc used in the automotive and / or industrial fields and a clamping ring used in the floating brake disc. Background Art

[0004] As is well known, existing floating brake discs for vehicles consist of a disc body and a wheel hub, commonly known as a disc cap. The disc body and wheel hub are connected by a fixed connector. During braking, the heat generated by the braking action can cause radial and axial deformation of the disc. This can create corresponding stress between the disc body and the wheel hub, which can easily cause brake judder and even damage the disc.

[0005] In addition, in the current structure of the brake ring and the disc cap of the floating brake disc connected by a fixed connector, the fixed connector uses a large number of parts, which makes the assembly process of this type of structure more complicated and the cost higher.

[0006] The problem underlying the present application is therefore the need to provide a floating brake disc for automotive and / or industrial applications having satisfactory structural and functional characteristics while resolving the drawbacks described with reference to the prior art. Summary of the Invention

[0007] The purpose of the present application is to provide a floating brake disc, so as to at least solve the technical problems described above with reference to the prior art.

[0008] This object and other objects and advantages are achieved by the floating brake disc described and claimed herein.

[0009] In one embodiment, the present application provides a floating brake disc, wherein the floating brake disc comprises:

[0010] a brake ring configured as an annular member rotatable about a central rotation axis, wherein the central rotation axis defines an axial direction of the floating brake disc, the brake ring defining a radial direction orthogonal to the axial direction and a circumferential direction orthogonal to both the axial direction and the radial direction;

[0011] a disk cap, the disk cap being configured to have: a top cover portion extending substantially in the radial direction and a skirt portion extending from a peripheral edge of the top cover portion in the axial direction, the skirt portion defining an annular outer peripheral surface of the disk cap extending in the circumferential direction, the disk cap being detachably attached to an annular inner ring of the brake ring extending in the circumferential direction via the annular outer peripheral surface and being movable in the axial direction relative to one side of the brake ring between an attached position and a detached position, wherein in the attached position, the disk cap is received in the annular inner ring of the brake ring and coupled to the brake ring, and in the detached position, the disk cap is disengaged from the brake ring; and

[0012] An annular elastic biasing member is configured such that, when the disc cap is in the attached position, the elastic biasing member is disposed between the disc cap and the brake ring along the circumferential direction and applies a biasing force to the brake ring along the axial direction against the disc cap.

[0013] In some embodiments, a first engaging portion is formed on the annular outer circumferential surface of the disc cap, and a second engaging portion is formed on the annular inner ring of the brake ring, the disc cap and the brake ring are coupled to each other through engagement of the first engaging portion with the second engaging portion, and wherein the elastic biasing member is arranged between the first engaging portion and the second engaging portion and abuts against the first engaging portion to apply a biasing force to the second engaging portion in the axial direction.

[0014] In some embodiments, the first engaging portion includes a plurality of first teeth extending along the axial direction formed on the annular outer peripheral surface of the disc cap, and the second engaging portion includes a plurality of second teeth extending along the axial direction formed on the annular inner ring of the brake ring. When the disc cap is coupled to the brake ring, the first teeth engage with the second teeth so that each second tooth is inserted in a first recess formed between two adjacent first teeth, and each first tooth is inserted in a second recess formed between two adjacent second teeth.

[0015] In some embodiments, the first engaging portion of the disc cap further includes: a boss formed in the first recess at a position adjacent to the end of the first tooth on the first side in the axial direction, the boss extending radially outward from the bottom of the first recess along the radial direction, and wherein, when the disc cap is coupled to the brake ring, the end surface of the boss facing the second side opposite to the first side in the axial direction abuts the end surface of the second tooth of the brake ring on the first side.

[0016] In some embodiments, an annular receiving portion is provided on the other end of the disc cap along the axial direction opposite to the end on which the boss is provided, and the annular elastic biasing member is accommodated in the annular receiving portion, so that when the disc cap is in the attached position, the end surface of the second tooth of the brake ring on the first side abuts the boss, and the end surface of the second tooth of the brake ring on the second side abuts the elastic biasing member.

[0017] In some embodiments, the annular receiving portion includes an inner groove provided on the radial inner surface of the skirt of the disc cap, and the inner groove is configured such that: at the first tooth, the inner groove is recessed radially outward from the radial inner surface of the skirt and is not visible from the outside of the skirt, and at the first recessed portion, the inner groove is connected to the first recessed portion in the circumferential direction, so that when the annular elastic biasing member is arranged in the inner groove, the elastic biasing member is exposed from the first recessed portion and abuts against the end surface of the second tooth of the brake ring on the second side.

[0018] In some embodiments, the annular receiving portion includes an outer groove provided on the radial outer surface of the skirt of the disc cap, and the outer groove is configured to be recessed radially inward from the radial outer surface of the skirt at the first tooth, so that when the annular elastic biasing member is arranged in the outer groove, the elastic biasing member abuts against the end surface of the second tooth of the brake ring on the second side at the first recessed portion.

[0019] In some embodiments, the resilient biasing member comprises a collar.

[0020] In some embodiments, the collar is configured as a wave-shaped annular member having protrusions and recesses alternately provided in the circumferential direction.

[0021] In some embodiments, the collar is configured to have an opening formed in the circumferential direction.

[0022] In some embodiments, two opposite ends of the collar located at the opening are configured to have ear-shaped portions or hook-shaped portions.

[0023] In some embodiments, the elastic biasing member further comprises an additional washer, which is mounted in the annular receiving portion together with the collar to form a combined elastic device.

[0024] In some embodiments, the additional gasket is a flat gasket.

[0025] In some embodiments, the brake ring includes: a first brake plate arranged on a first side of the brake ring along the axial direction and a second brake plate arranged on a second side of the brake ring opposite to the first side along the axial direction, and wherein the disc cap is configured to be coupled to the first brake plate of the brake ring and is capable of moving between the attachment position and the detachment position relative to the first brake plate in the axial direction.

[0026] The floating brake disc and retaining ring provided by the embodiments of the present application provide the following beneficial technical effects: the disc cap is mated to the brake ring by press-fitting. In the attached position, the first teeth on the annular outer peripheral surface of the disc cap skirt engage with the second teeth on the annular inner ring of the brake ring. Furthermore, through the press-fitting process, the second teeth on the annular inner ring of the brake ring are engaged between the elastic biasing member in the annular receiving portion of the disc cap and the boss in the disc cap skirt. Therefore, during the braking action of the vehicle, the floating brake disc is in action, so that the floating brake disc provided by the embodiments of the present application can simultaneously eliminate radial and axial stresses that may be generated at the junction of the brake ring and the disc cap.

[0027] Specifically, it is well known that an outward centrifugal force is generated during the rotation of the wheel, and this centrifugal force causes the brake ring and the disc cap of the floating brake disc to be slightly deformed outward in the radial direction. Since the brake ring and the disc cap in the present application are in a meshing engagement, when both the disc cap and the brake ring are slightly deformed outward in the radial direction, the two will not cause compression or even wear on each other in the radial direction. At the same time, since the elastic biasing member is arranged between the disc cap and the brake ring along the circumferential direction, even if the disc cap and the brake ring produce relative movement in the circumferential direction, the elastic biasing member can also apply a biasing force to the brake ring along the axial direction against the disc cap, thereby offsetting the axial stress that may exist between the disc cap and the brake ring. The novel and simple structure of the floating brake disc provided by the embodiment of the present application eliminates the stress in the axial and radial directions during the operation of the brake disc, and prolongs the service life of the brake disc. In addition, this type of structure has a simple structure, a simplified manufacturing process, and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present application and its further advantageous and further embodiments are described and explained in more detail below with reference to the examples shown in the accompanying drawings. According to the present application, the features derived from the description and the drawings can be used alone or together in any combination. In the drawings:

[0029] 1 is a top view of a floating brake disc according to an embodiment of the present application, wherein the disc cap of the floating brake disc is in an attached position;

[0030] FIG2 is a bottom view of the floating brake disc according to FIG1 ;

[0031] FIG3 is an exploded perspective view of the floating brake disc according to FIG1 , wherein the disc cap of the floating brake disc is in a separated position;

[0032] FIG4 is a cross-sectional view of the floating brake disc according to FIG1 taken along line AA shown in FIG1 ;

[0033] 5 is a perspective view of a retaining ring used in a floating brake disc according to an embodiment of the present application;

[0034] 6 is a top view of a floating brake disc according to another embodiment of the present application, wherein the disc cap of the floating brake disc is in an attached position;

[0035] FIG7 is a bottom view of the floating brake disc according to FIG6;

[0036] FIG8 is an exploded perspective view of the floating brake disc according to FIG6 , wherein the disc cap of the floating brake disc is in a separated position; and

[0037] FIG. 9 is a cross-sectional view of the floating brake disc according to FIG. 6 , taken along line BB shown in FIG. 6 . DETAILED DESCRIPTION

[0038] The illustrations in the accompanying drawings are schematic. It should be noted that in different drawings, similar or identical elements or features are provided with the same reference numerals or reference numerals that differ from the corresponding reference numerals only in the first digit. To avoid unnecessary repetition, elements or features that have already been explained with respect to the preceding embodiments are not explained again at the subsequent description point.

[0039] In addition, spatially relative terms, such as "front" and "rear", "upper" and "lower", "left" and "right", etc., are used to describe the relationship of one element to another element as shown in the figures. In this way, spatially relative terms can apply to orientations in use that are different from the orientations depicted in the figures. Obviously, all such spatially relative terms refer to the orientations shown in the figures for ease of description only and are not necessarily limiting, as the device according to the embodiments of the present application can assume orientations different from those illustrated in the figures when in use. For example, the expressions "inner" and "outer" used in this application are relative positions relative to the rotation axis of the floating brake disc. For example, "annular inner ring of the brake ring" can refer to an annular inner surface of the brake ring that is closest to the rotation axis relative to the rotation axis, while "annular outer peripheral surface of the disc cap" can refer to the outer peripheral surface of the disc cap that is farthest from the rotation axis relative to the rotation axis. A person of ordinary skill in the art can easily understand the meaning of such expressions in conjunction with the description herein and the figures.

[0040] Furthermore, the terms “first,” “second,” and “third” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "coupled" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0042] The present application provides a floating brake disc 1 .

[0043] In the embodiment of the floating brake disc 1 as shown in, for example, FIG. 1 to FIG. 5 , the floating brake disc 1 may include a disc cap 2 , a brake ring 4 and an elastic brake member 6 .

[0044] The brake ring 4 can be configured as an annular member capable of rotating around a central rotation axis, wherein the central rotation axis can define an axial direction XX of the floating brake disc 1 , and the brake ring 4 defines: a radial direction RR orthogonal to the axial direction XX, and a circumferential direction CC orthogonal to both the axial direction XX and the radial direction RR.

[0045] In some embodiments, the brake ring 4 may include a first brake plate 42 arranged on a first side of the brake ring 4 in the axial direction XX and a second brake plate 44 arranged on a second side of the brake ring 4 opposite to the first side in the axial direction XX. In conjunction with Figure 4 , it will be appreciated that the first side indicated herein may be the left side shown in Figure 4 , i.e., a side close to the top of the disc cap 2 in the axial direction XX, and the second side indicated herein may be the right side shown in Figure 4 , i.e., a side away from the top of the disc cap 2 in the axial direction XX.

[0046] The first brake plate 42 and the second brake plate 44 are preferably both annular plates, with the central hollow area of ​​the first brake plate 42 being used to accommodate the disk cap 2. It will be understood that the first brake plate 42 and the second brake plate 44 may also be plates of other shapes, as long as a hollow portion for accommodating the disk cap 2 is retained in the central area of ​​one of the brake plates.

[0047] In some embodiments, the first brake plate 42 and the second brake plate 44 are arranged to face each other and may be joined to each other in the axial direction through elements for heat dissipation and connection.

[0048] The disc cap 2 can be configured to be coupled to the first brake plate 42 of the brake ring 4 and can be moved in the axial direction XX relative to the first brake plate 42 between the attached position and the detached position. It will be understood that in this embodiment, the coupling of the disc cap 2 and the first brake plate 42 is merely illustrative. In different embodiments, the disc cap 2 can also be coupled to the second brake plate 44 and move relative to the second brake plate 44 between the attached position and the detached position.

[0049] This disc cap 2 can be configured to have: the top cover portion 22 that extends roughly along the described radial direction RR, and the skirt 24 that extends along the described axial direction XX from the periphery of the described top cover portion 22.Described skirt 24 limits the annular outer peripheral surface 26 that extends along the described circumferential direction of described disc cap 2, and described disc cap 2 is attached to the annular inner ring 46 that extends along the described circumferential direction CC of described brake ring 4 in a detachable manner via the described annular outer peripheral surface 26, and can move between attachment position and detachment position relative to a side of described brake ring 4 in the described axial direction XX.In the attachment position as shown in Figure 1, described disc cap 2 is received in the described annular inner ring 46 of described brake ring 4 and is coupled with described brake ring 4, and in detachment position as shown in Figure 3, described disc cap 2 is disengaged from described brake ring 4.

[0050] In some embodiments, as shown in Figures 1 to 3, the skirt portion 24 can extend from the periphery of the top cover portion 22 along the axial direction XX along the entire periphery of the top cover portion 22 of the disc cap 2. In other embodiments, if manufacturing conditions and the specific application structure permit, the skirt portion 24 can extend over a portion of the periphery of the top cover portion 22, that is, the extension range of the skirt portion 24 is adjustable during the manufacturing process. For example, the skirt portion 24 can extend over 1 / 2 or 1 / 4 of the periphery of the top cover portion 22, and the extension method can be continuous or intermittent, as long as the normal engagement between the disc cap 2 and the brake ring 4 and the good operation of the brake disc can be ensured.

[0051] In some embodiments, a first engaging portion 262 may be formed on the annular outer circumferential surface 26 of the disc cap 2, and a second engaging portion 462 may be formed on the annular inner ring 46 of the brake ring 4, and the disc cap 2 and the brake ring 4 may be coupled to each other through the engagement of the first engaging portion 262 and the second engaging portion 462.

[0052] It is understood that the specific location and number of the first and second engaging portions 262, 462 disposed in the axial direction may be varied. For example, the first and second engaging portions 262, 462 may be disposed continuously in the circumferential direction, or a plurality of first and second engaging portions 262, 462 may be disposed spaced apart in the circumferential direction. However, it should be noted that the number of first and second engaging portions 262, 462 disposed must correspond to each other to ensure proper coupling between the disc cap 2 and the brake ring 4 through the cooperation between the first and second engaging portions 262, 462.

[0053] In some embodiments, the first engaging portion 262 may include a plurality of first teeth 2622 formed on the annular outer circumferential surface 26 of the disc cap 2 and extending along the axial direction XX, and the second engaging portion 462 may include a plurality of second teeth 4622 formed on the annular inner ring 46 of the brake ring 4 and extending along the axial direction XX. When the disc cap 2 is coupled to the brake ring 4, the first teeth 2622 mesh with the second teeth 4622 such that each second tooth 4622 is inserted into a first recess 2624 formed between two adjacent first teeth 2622, and each first tooth 2622 is inserted into a second recess 4624 formed between two adjacent second teeth 4622.

[0054] In some embodiments, the first teeth 2622 and the second teeth 4622 may be teeth with trapezoidal cross-sections, as shown in FIG3 . In other embodiments, the first teeth 2622 and the second teeth 4622 may also have other shapes, such as teeth with triangular cross-sections, teeth with semicircular cross-sections, teeth with arcuate cross-sections, etc., as long as the first teeth 2622 and the second teeth 4622 can be tightly meshed.

[0055] Furthermore, the placement and number of the first teeth 2622 and the second teeth 4622 can be customized based on the specific application, as long as the first teeth 2622 and the second teeth 4622 can correspond to and engage with each other. For example, as shown in Figures 1 to 3 , the first teeth 2622 can be arranged along the entire circumference of the skirt 24 of the disc cap 2, and the second teeth 4622 can be arranged along the entire circumference of the annular inner ring 46 of the first brake plate 42. Alternatively, the first teeth 2622 can be arranged along, for example, 1 / 2, 1 / 3, or 1 / 4 of the circumference of the skirt 24 of the disc cap 2. Such first teeth 2622 can be arranged equidistantly around the circumference or spaced apart in groups. The same arrangement applies to the second teeth 4622. That is, during the manufacturing process, the manufacturer can adjust the spacing between adjacent first teeth 2622 and, correspondingly, the spacing between the second teeth 4622 based on the specific application.

[0056] In some embodiments, the first engaging portion 262 of the disc cap 2 also includes: a boss 2626 formed in the first recessed portion 2624 at a position adjacent to the end on a first side in the axial direction XX of the first tooth 2622. It is understandable that the first side in the axial direction XX of the first tooth 2622 is indicated here as a side that is upwards in Fig. 3. In other words, as shown in Figure 3, boss 2626 is formed in the first recessed portion 2624 at a position adjacent to the end on a side in the axial direction XX of the first tooth 2622, and the boss 2626 extends radially outwards from the bottom of the first recessed portion 2624 along the radial direction RR. When the disc cap 2 is coupled to the brake ring 4, it is understandable that the boss 2626 is directed toward the second side opposite to the first side in the axial direction XX, and the end surface of the end face of the side that is downwards in Fig. 3 abuts against the end surface of the second tooth 4622 of the brake ring 4 on the first side.

[0057] In some embodiments, an annular receiving portion 2628 is provided on the other end of the disc cap 2 along the axial direction XX opposite to the end where the boss 2626 is provided, and the annular elastic biasing member 6 is accommodated in the annular receiving portion 2628, so that when the disc cap 2 is in the attached position, the end surface 4622a of the second tooth 4622 of the brake ring 4 on the first side abuts the boss 2626, and the end surface 4622b of the second tooth 4622 of the brake ring 4 on the second side (the lower side in Figure 3) abuts the elastic biasing member 6.

[0058] In some embodiments, the extent to which the boss 2626 extends radially outward from the bottom of the first recess 2624 along the radial direction RR may be equal to the depth of the first recess 2624. Alternatively, the extent to which the boss 2626 extends may be equal to, for example, 1 / 2, 1 / 3, or 1 / 4 of the depth of the first recess 2624.

[0059] In some embodiments, the end surface of the boss 2626 facing the second side may be a flat surface flush with the end surface 4622a on the first side of the second tooth 4622, as shown in the cross-sectional view of Figure 4. Alternatively, the end surface of the boss 2626 facing the second side may be a non-flat surface or an inclined surface with a slight slope, so as to achieve a snap connection with the end surface 4622a on the first side.

[0060] In some embodiments, as shown in the perspective view of FIG3 , a boss 2626 is formed in each first recess 2624. However, it is understood that the arrangement of the bosses 2626 can also be modified, for example, a boss 2626 can be provided in every two, three, four, or even five first recesses 2624.

[0061] In some embodiments, the annular receiving portion 2628 may include an inner groove 2628a provided on the radial inner surface of the skirt 24 of the disc cap 2, and the inner groove 2628a is configured as follows: at the first tooth 2622, the inner groove 2628a is recessed radially outward from the radial inner surface of the skirt 24 and is not visible from the outside of the skirt 24, and at the first recessed portion 2624, the inner groove 2628a is connected to the first recessed portion 2624 in the circumferential direction, so that when the annular elastic biasing member 6 is arranged in the inner groove 2628a, the elastic biasing member 6 is exposed from the first recessed portion 2624 and abuts against the end surface 4622b of the second tooth 4622 of the brake ring 4 on the second side.

[0062] The elastic biasing member 6 may be disposed between the first engagement portion 262 and the second engagement portion 462 and abut against the first engagement portion 262 to apply a biasing force to the second engagement portion 462 in the axial direction.

[0063] The annular elastic biasing member 6 can be configured such that when the disc cap 2 is in the attached position, the elastic biasing member 6 is arranged between the disc cap 2 and the brake ring 4 along the circumferential direction and applies a biasing force to the brake ring 4 along the axial direction against the disc cap 2.

[0064] In some embodiments, the height h between the end surface of the boss 2626 facing the second side and the bottom of the annular receiving portion 2628 located on the second side can be adjusted based on the thickness of the first brake plate 42 along the axial direction XX. For example, the height h can be less than or equal to the sum of the thickness of the first brake plate 42 and the height of the elastic biasing member 6 in the XX direction. When the height h is equal to the sum of the thickness of the first brake plate 42 and the height of the elastic biasing member 6, the elastic biasing member 6 is not compressed in the axial direction XX in the attached position. When the height h is less than the sum of the thickness of the first brake plate 42 and the height of the elastic biasing member 6, the elastic biasing member 6 is compressed in the axial direction XX in the attached position.

[0065] In some embodiments, the elastic biasing member 6 may include a collar.

[0066] In some embodiments, the collar may be configured as a wavy annular member having arcuate protrusions and arcuate recesses alternately arranged in the circumferential direction CC, as shown in FIG5 .

[0067] It is understood that the shape of the collar can be changed. In other embodiments, a bent ring member having rectangular, trapezoidal or substantially triangular protrusions and recesses can be used, which is not shown in the drawings.

[0068] In some embodiments, the collar may be configured to have an opening 62 formed in the circumferential direction CC, so that the collar can circumferentially contract when subjected to an external force and return to its original shape when the external force is removed. In this way, the collar can be easily installed in the annular receiving portion 2628.

[0069] In some embodiments, the two opposing ends of the collar located at the opening 62 may be configured with ears or hooks. This facilitates the operator's ability to circumferentially retract the collar, thereby facilitating placement of the collar into the inner groove 2628a or removal of the collar from 2628a. Furthermore, the ears or hooks may be provided with openings to facilitate insertion of tools for manipulation of the collar.

[0070] In some embodiments, the elastic biasing member 6 may further include an additional gasket, which together with the collar may be installed in the annular receiving portion 2628 to form a combined elastic device.

[0071] In some embodiments, the additional gasket may be a flat gasket.

[0072] In some embodiments, the additional gasket may also be a gasket having the same shape as the collar and capable of being tightly overlapped with the collar.

[0073] The operating principle of the floating brake disc 1 according to the embodiment shown in Figures 1 to 5 is as follows. An inner groove 2628a is pre-set on the annular outer circumferential surface 26 of the disc cap 2. After the disc cap 2 is assembled with the brake ring 4 by press-fitting, an operator or device places the elastic biasing member 6 into the inner groove 2628a, thereby completing the overall assembly of the floating brake disc. In the attached position, the first teeth 2622 on the annular outer circumferential surface 26 of the skirt 24 of the disc cap 2 mesh with the second teeth 4622 on the annular inner ring 46 of the brake ring 4. Furthermore, through the press-fitting process, the second teeth 4622 on the annular inner ring 46 of the brake ring 4 are engaged between the elastic biasing member 6 in the annular receiving portion 2628 of the disc cap 2 and the boss 2626 in the skirt 24 of the disc cap 2. Therefore, during the braking action of the vehicle, the floating brake disc 1 acts so that the floating brake disc 1 provided by the embodiment of the present application can simultaneously eliminate radial and axial stress and displacement that may be generated at the joint between the brake ring 4 and the disc cap 2.

[0074] Specifically, it is well known that during the rotation of the wheel, an outward centrifugal force is generated, and this centrifugal force causes the brake ring and the disc cap of the floating brake disc to be slightly deformed outward in the radial direction. Since the brake ring 4 and the disc cap 2 in the present application are in a meshing engagement, when both the disc cap 2 and the brake ring 4 are slightly deformed outward in the radial direction, the two will not cause compression or even wear on each other in the radial direction. At the same time, since the elastic biasing member 6 is arranged between the disc cap 2 and the brake ring 4 along the circumferential direction, even if the disc cap 2 and the brake ring 4 produce relative movement in the axial direction, the elastic biasing member 6 can also abut against the disc cap 2 to apply a biasing force to the brake ring 4 in the axial direction, thereby offsetting the axial stress that may exist between the disc cap 2 and the brake ring 4 through the elastic force of the elastic biasing member 6 itself. The novel and simple structure of the floating brake disc 1 provided by the embodiment of the present application eliminates the stress in the axial and radial directions during the operation of the brake disc 1, thereby extending the service life of the brake disc. In addition, this type of structure has a simple structure, a simplified manufacturing process, and reduces costs.

[0075] Figures 5 to 9 illustrate a floating brake disc 1' according to another embodiment of the present application. The floating brake disc 1' in this embodiment has partially identical or similar structures to the floating brake disc 1 shown in Figure 1 . The following will primarily describe the differences between this embodiment and the illustrated embodiment. Identical or similar structures are denoted by the same reference numerals and will not be described again. The difference between the floating brake disc 1 and the floating brake disc 1 lies in the location of the annular receiving portion 2628.

[0076] Specifically, in the present embodiment, the annular receiving portion 2628 may include an outer groove 2628b provided on the radial outer surface of the disk cap 2 on the skirt 24. The outer groove 2628b is configured to be recessed radially inward from the radial outer surface of the skirt 24 at the first tooth 2622, so that when the annular elastic biasing member 6 is arranged in the outer groove 2628b, the elastic biasing member 6 abuts against the end surface 4622b of the second tooth 4622 of the brake ring 4 on the second side at the first recessed portion 2624.

[0077] The end surface 4622b on the second side of the first brake plate 42 can be arranged in a concave transition portion extending outward in the radial direction along the circumferential direction at a position close to the elastic biasing member 6, so that after the disc cap 2 and the brake ring 4 are pressed together, the operator can place the elastic biasing member 6 from the concave transition portion into the outer groove 2628b of the annular outer peripheral surface 26 of the disc cap 2.

[0078] The operating principle of the floating brake disc 1' according to the embodiment shown in Figures 5 to 9 is as follows. The annular outer circumferential surface 26 of the disc cap 2 is pre-defined with an outer groove 2628b. After the disc cap 2 is assembled with the brake ring 4 by press-fitting, an operator or equipment places the elastic biasing member 6 into the inner groove 2628a via the recessed transition portion, thereby completing the overall assembly of the floating brake disc. In this embodiment, the disc cap 2 is also press-fitted to the brake ring 4. In the attached position, the first teeth 2622 on the annular outer circumferential surface 26 of the skirt 24 of the disc cap 2 mesh with the second teeth 4622 on the annular inner ring 46 of the brake ring 4. Furthermore, through the press-fitting process, the second teeth 4622 on the annular inner ring 46 of the brake ring 4 are engaged between the elastic biasing member 6 in the annular receiving portion 2628 of the disc cap 2 and the boss 2626 in the skirt 24 of the disc cap 2. Therefore, during the braking of the vehicle, the floating brake disc 1 ′ acts so that the floating brake disc 1 ′ provided by the embodiment of the present application can simultaneously eliminate radial and axial stresses that may be generated at the junction of the brake ring 4 and the disc cap 2 .

[0079] Furthermore, it is understood that the floating brake disc provided by the embodiments of the present application is reproducible and can be used in a variety of industrial applications, particularly in the automotive field.

[0080] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

[0081] List of reference numerals: 1, 1' floating brake disc; 2 disc cap; 22 top cover portion; 24 skirt portion; 262 first engaging portion; 2622 first tooth; 2624 first recess; 2626 boss; 2628 annular receiving portion; 2628a inner groove; 2628b outer groove; 4 brake ring; 42 first brake plate; 44 second brake plate; 46 annular inner ring; 462 second engaging portion; 4622 second tooth; 4622a end surface on the first side; 4622b end surface on the second side; 4624 second recess; 6 elastic biasing member; 62 opening. Industrial Applicability

[0082] An embodiment of the present application provides a floating brake disc, in which a disc cap is press-fitted to a brake ring. In the attached position, first teeth on the annular outer peripheral surface of the disc cap skirt engage with second teeth on the annular inner ring of the brake ring. Furthermore, through the press-fitting process, the second teeth on the annular inner ring of the brake ring are engaged between a resilient biasing member in the annular receiving portion of the disc cap and a boss in the disc cap skirt. Therefore, during a braking action of a vehicle, the floating brake disc is in action, so that the floating brake disc provided by the embodiment of the present application can simultaneously eliminate radial and axial stresses that may be generated at the junction of the brake ring and the disc cap.

[0083] Furthermore, it is understood that the floating brake disc provided by the embodiments of the present application is reproducible and can be used in a variety of industrial applications. For example, the floating brake disc provided by the embodiments of the present application can be used in the field of automobile technology.

Claims

1. A floating brake disc (1), wherein, The floating brake disc (1) includes: A brake ring (4), which is configured as an annular member capable of rotating around a central rotation axis that defines the axial direction (X-X) of the floating brake disc (1). The brake ring (4) defines a radial direction (R-R) orthogonal to the axial direction (X-X) and a circumferential direction (C-C) orthogonal to both the axial direction (X-X) and the radial direction (R-R); A disc cap (2), which is configured to have: a top cover portion (22) extending substantially along the radial direction (R-R) and a skirt portion (24) extending along the axial direction (X-X) from the periphery of the top cover portion (22). The skirt portion (24) defines an annular outer peripheral surface (26) of the disc cap (2) extending along the circumferential direction. The disc cap (2) is detachably attached to an annular inner ring (46) of the brake ring (4) extending along the circumferential direction (C-C) via the annular outer peripheral surface (26), and is capable of moving between an attached position and a separated position relative to one side of the brake ring (4) in the axial direction (X-X). Wherein, in the attached position, the disc cap (2) is received in the annular inner ring (46) of the brake ring (4) and is coupled to the brake ring (4), and in the separated position, the disc cap (2) is disengaged from the brake ring (4); and An annular elastic biasing member (6), which is arranged such that when the disc cap (2) is in the attached position, the elastic biasing member (6) is disposed between the disc cap (2) and the brake ring (4) along the circumferential direction, and applies a biasing force to the brake ring (4) along the axial direction against the disc cap (2).

2. The floating brake disc (1) according to claim 1, wherein, A first engaging portion (262) is formed on the annular outer peripheral surface (26) of the disc cap (2), and a second engaging portion (462) is formed on the annular inner ring (46) of the brake ring (4). The disc cap (2) and the brake ring (4) are coupled to each other through the engagement of the first engaging portion (262) and the second engaging portion (462), and wherein, the elastic biasing member (6) is arranged between the first engaging portion (262) and the second engaging portion (462) and applies a biasing force to the second engaging portion (462) along the axial direction against the first engaging portion (262).

3. The floating brake disc (1) according to claim 2, wherein, The first engaging portion (262) includes a plurality of first teeth (2622) extending along the axial direction (X-X) formed on the annular outer peripheral surface (26) of the disc cap (2), and the second engaging portion (462) includes a plurality of second teeth (4622) extending along the axial direction (X-X) formed on the annular inner ring (46) of the brake ring (4). When the disc cap (2) is coupled to the brake ring (4), the first teeth (2622) engage with the second teeth (4622) such that each second tooth (4622) is inserted into a first recess (2624) formed between two adjacent first teeth (2622), and each first tooth (2622) is inserted into a second recess (4624) formed between two adjacent second teeth (4622).

4. The floating brake disc (1) according to claim 3, wherein, The first engaging portion (262) of the disc cap (2) further includes a boss (2626) formed in the first recess (2624) at a position adjacent to an end of the first tooth (2622) on a first side in the axial direction (X-X). The boss (2626) extends radially outward from the bottom of the first recess (2624) in the radial direction (R-R). And wherein, when the disc cap (2) is coupled to the brake ring (4), an end face of the boss (2626) facing a second side opposite to the first side in the axial direction (X-X) abuts against an end surface of the second tooth (4622) of the brake ring (4) on the first side.

5. The floating brake disc (1) according to claim 4, wherein, An annular receiving portion (2628) is provided at the other end of the disc cap (2) opposite to the end provided with the boss (2626) in the axial direction (X-X). The annular elastic biasing member (6) is received in the annular receiving portion (2628) such that when the disc cap (2) is in the attached position, the end surface (4622a) of the second tooth (4622) of the brake ring (4) on the first side abuts against the boss (2626), and the end surface (4622b) of the second tooth (4622) of the brake ring (4) on the second side abuts against the elastic biasing member (6).

6. The floating brake disc (1) according to claim 5, wherein, The annular receiving portion (2628) includes an inner groove (2628a) provided on a radially inner surface of the skirt portion (24) of the disc cap (2). The inner groove (2628a) is configured such that at the first teeth (2622), the inner groove (2628a) recesses radially outward from the radially inner surface of the skirt portion (24) and is not visible from the outside of the skirt portion (24), and at the first recess (2624), the inner groove (2628a) communicates with the first recess (2624) in the circumferential direction. Such that when the annular elastic biasing member (6) is disposed in the inner groove (2628a), the elastic biasing member (6) is exposed from the first recess (2624) and abuts against the end surface (4622b) of the second tooth (4622) of the brake ring (4) on the second side.

7. The floating brake disc (1) according to claim 5, wherein, The annular receiving portion (2628) includes an outer groove (2628b) provided on a radially outer surface of the skirt portion (24) of the disc cap (2), and the outer groove (2628b) is configured to be recessed radially inwards from the radially outer surface of the skirt portion (24) at the first tooth (2622), such that when the annular elastic biasing member (6) is disposed in the outer groove (2628b), the elastic biasing member (6) abuts against an end surface (4622b) on the second side of the second tooth (4622) of the brake ring (4) at the first recess (2624).

8. The floating brake disc (1) according to claim 6 or 7, wherein, The elastic biasing member (6) includes a snap ring.

9. The floating brake disc (1) according to claim 8, wherein, The snap ring is configured as a wave-shaped annular member alternately provided with protrusions and recesses in the circumferential direction (C-C).

10. The floating brake disc (1) according to claim 9, wherein, The snap ring is configured to have an opening (62) formed in the circumferential direction (C-C).

11. The floating brake disc (1) according to claim 10, wherein, Two opposite ends of the snap ring located at the opening (62) are configured to have ear-like portions or hook-like portions.

12. The floating brake disc (1) according to claim 8, wherein, The elastic biasing member (6) further includes an additional gasket, and the additional gasket is installed together with the snap ring in the annular receiving portion (2628) to form a combined elastic device.

13. The floating brake disc (1) according to claim 12, wherein, The additional gasket is a flat gasket.

14. The floating brake disc (1) according to any one of claims 1 to 13, wherein, The brake ring (4) includes: a first brake plate (42) disposed on a first side of the brake ring (4) along the axial direction (X-X) and a second brake plate (44) disposed on a second side of the brake ring (4) opposite to the first side along the axial direction (X-X), and wherein the disc cap (2) is arranged to be coupled to the first brake plate (42) of the brake ring (4) and is movable relative to the first brake plate (42) between the attached position and the separated position in the axial direction (X-X).

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