Brake disc capable of improving thermal deformation

Abstract

The utility model relates to a brake disc capable of improving thermal deformation, which comprises a brake disc body, a brake disc mounting brim and a neck part, the brake disc body and the neck part are both of an annular structure, one axial end of the neck part is fixedly connected to the inner side edge of the brake disc body in the circumferential direction, and the other axial end of the neck part is fixedly connected to the inner side edge of the brake disc body. One end of the neck part is fixedly connected to the inner side of one end, in the axial direction, of the brake disc body, the other end of the neck part is fixedly connected to the end of the edge of the brake disc mounting brim in the circumferential direction, and a plurality of heat dissipation holes are formed in one end of the neck part in a penetrating mode and evenly distributed in the neck part in the circumferential direction. The brake disc can solve the technical problems that an existing brake disc is poor in heat dissipation effect, and the braking effect of the brake disc is affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile parts, in particular to a brake disc capable of improving thermal deformation. BACKGROUND

[0002] The brake disc is a friction pair of disc brake, which is connected with the brake disc mounting surface on the bearing unit through the brake disc mounting cap brim. During braking, a large amount of heat is generated by the friction between the brake disc and the brake disc, which causes the temperature of the brake disc to rise sharply, resulting in thermal expansion of the brake disc and warping deformation of the brake disc relative to the brake disc mounting surface, thereby increasing the end face runout value of the brake disc surface, leading to brake torque fluctuation and brake jitter, brake noise and even brake failure of the automobile, which seriously affects the ride comfort, handling stability and safety of the automobile. SUMMARY

[0003] The utility model discloses to the technical problem that the existing brake disc heat dissipation effect is not good, influence its braking effect, provide a brake disc capable of improving thermal deformation.

[0004] The utility model discloses a technical scheme that solves the above technical problem:

[0005] A brake disc capable of improving thermal deformation, comprising a brake disc body, a brake disc mounting cap brim and a neck, the brake disc body and the neck are both annular structures, one end of the neck is fixedly connected to the inner edge of the brake disc body in the circumferential direction and is fixedly connected to the inner side of one end of the brake disc body in the axial direction, the other end is fixedly connected to the edge end of the brake disc mounting cap brim in the circumferential direction, a plurality of heat dissipation holes are provided through one end of the neck, and the heat dissipation holes are uniformly distributed in the circumferential direction of the neck.

[0006] The utility model has the advantages that: in actual use, more air enters the back of the neck through the heat dissipation holes provided on the neck of the brake disc, is distributed in the direction of the other end of the brake disc body in the axial direction, carries away the heat of the brake disc body, speeds up the cooling of the brake disc, helps to improve the warping deformation of the brake disc body relative to the brake disc mounting cap brim caused by the sharp rise in the temperature of the brake disc, and the provision of the heat dissipation holes also has the effect of preventing thermal deformation of the brake disc, further avoids brake jitter, brake noise and brake failure caused by thermal taper deformation, and thus improves the controllability, safety and ride comfort of the automobile.

[0007] On the basis of the above technical scheme, the utility model can also be improved as follows.

[0008] Further, a plurality of air ducts are provided through the brake disc body in the radial direction, the air ducts are uniformly distributed in the axial direction of the brake disc body, and each heat dissipation hole is connected to a corresponding air duct.

[0009] The beneficial effect of the above further scheme is that: after the air enters the back of the neck through the heat dissipation holes, it can enter the air duct and take away the heat of the brake disc body, accelerating the cooling of the brake disc, and helping to improve the warping deformation of the brake disc body relative to the brake disc mounting hat due to the sharp rise in brake disc temperature.

[0010] Further, each of the heat dissipation holes is provided with an outer opening opening towards the direction of the brake disc mounting hat and an inner opening opening away from the direction of the brake disc mounting hat, and the inner opening is located in the opening direction of the corresponding air duct.

[0011] The beneficial effect of the above further scheme is that: in actual use, air enters the heat dissipation hole through the outer opening and is discharged from the inner opening, at this time, since the inner opening is located in the opening direction of the corresponding air duct, the amount of air entering the air duct can be relatively increased, and the heat dissipation effect on the brake disc can be improved.

[0012] Further, the outer opening and the inner opening are chamfered to form a rounded surface structure.

[0013] The beneficial effect of the above further scheme is that: by dispersing stress through the rounded surface structure, the anti-deformation ability of the entire brake disc is improved.

[0014] Further, the adjacent two air ducts form a heat dissipation rib, and each of the heat dissipation ribs and the corresponding air duct forms an arc surface structure.

[0015] The beneficial effect of the above further scheme is that: during the heat dissipation process, after the air enters the air duct, the air duct with an arc surface structure inner wall can ensure the normal circulation of the air, and the stress can be dispersed through the arc surface structure to improve the anti-deformation ability of the entire brake disc.

[0016] Further, the neck includes a connecting ring fixedly connected to the inner side edge of the brake disc body at one end and a mounting ring fixedly connected to the other end of the connecting ring at one end, and the other end of the mounting ring is fixedly connected to the edge end of the brake disc mounting hat, and each of the heat dissipation holes is circumferentially distributed on the connecting ring.

[0017] The beneficial effect of the above further scheme is that: by connecting the connecting ring and the mounting ring, the fixed connection of the brake disc body and the brake disc mounting hat is realized, and the mounting ring can be used as the bearing installation position during the installation of the brake disc, realizing the stable installation of the entire brake disc.

[0018] Further, the connecting ring comprises an inclined ring with one end fixedly connected to the inner side edge of the brake disc body in the circumferential direction and an arc-shaped ring with one end fixedly connected to the other end of the inclined ring in the circumferential direction, the other end of the arc-shaped ring is fixedly connected to one end of the mounting ring in the circumferential direction, and the one end of the inclined ring is closer to the brake disc mounting hat brim relative to the other end, the inclined ring and the arc-shaped ring jointly form an avoiding slot which is open towards the direction of the brake disc mounting hat brim, and each of the heat dissipation holes is arranged in the inclined ring or the arc-shaped ring.

[0019] The beneficial effect of the further scheme is that the avoiding slot is formed to avoid the bearing from being smoothly mounted on the outer side of the mounting ring.

[0020] Further, the heat dissipation holes are arranged in twelve and distributed on the neck.

[0021] The beneficial effect of the further scheme is that the air is smoothly passed through each of the heat dissipation holes to achieve the effective heat dissipation of the brake disc.

[0022] Further, the brake disc mounting hat brim is provided with a plurality of mounting holes which are uniformly distributed in the circumferential direction around the axis of the brake disc mounting hat brim.

[0023] The beneficial effect of the further scheme is that the whole brake disc is mounted and fixed through the mounting holes.

[0024] Further, the brake disc mounting hat brim is provided with a plurality of weight-reducing grooves on the outer side away from the brake disc body.

[0025] The beneficial effect of the further scheme is that the whole brake disc is reduced in weight through the weight-reducing grooves. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a first perspective structural view of the utility model;

[0027] Figure 2 It is a second perspective structural view of the utility model;

[0028] Figure 3 It is Figure 2 It is an enlarged view of the middle A part;

[0029] Figure 4 It is a partial sectional view of the utility model;

[0030] Figure 5 It is a sectional view of the utility model;

[0031] Figure 6 It is Figure 5 It is a partial enlarged view of

[0032] Figure 7 is a CAE analysis result diagram of the traditional brake disc being warped and deformed by heat;

[0033] Figure 8 is a CAE analysis result diagram of the brake disc being warped and deformed by heat.

[0034] In the drawings, the components represented by each reference numeral are listed as follows:

[0035] 1, brake disc body; 11, air duct; 12, heat dissipation rib; 13, air groove;

[0036] 2, brake disc mounting hat brim; 21, mounting hole; 22, weight reduction groove;

[0037] 3, neck; 31, connecting ring; 311, inclined ring; 312, arc-shaped ring; 313, avoiding groove; 32, mounting ring;

[0038] 4, heat dissipation hole; 41, outer opening; 42, inner opening. DETAILED DESCRIPTION

[0039] The principles and characteristics of the utility model are described below in combination with the drawings, and the examples are only used to explain the utility model and are not used to limit the scope of the utility model.

[0040] Example 1

[0041] As Figures 1 to 6 A brake disc capable of improving thermal deformation, comprising a brake disc body 1, a brake disc mounting hat brim 2 and a neck 3, the brake disc body 1 and the neck 3 are both annular structures, the neck 3 is fixedly connected to the inner side edge of the brake disc body 1 in the circumferential direction at one end in the axial direction, and is fixedly connected to the inner side of one end of the brake disc body 1 in the axial direction, and the other end is fixedly connected to the edge end of the brake disc mounting hat brim 2 in the circumferential direction, a plurality of heat dissipation holes 4 are provided through one end of the neck 3, and each heat dissipation hole 4 is distributed in the circumferential direction of the neck 3.

[0042] The beneficial effects of the embodiment are: in actual use, more air enters the back of the neck 3 through the plurality of heat dissipation holes 4 provided on the neck 3 of the brake disc, is distributed in the direction of the other end of the brake disc body 1 in the axial direction, and carries away the heat of the brake disc body 1, thereby accelerating the cooling of the brake disc, which helps to improve the warping deformation of the brake disc body 1 relative to the brake disc mounting hat brim 2 due to the sharp rise in the temperature of the brake disc, and the provision of the heat dissipation holes 4 also has the effect of preventing thermal deformation of the brake disc, further avoiding brake shaking, abnormal brake noise and brake failure caused by thermal cone deformation, thereby improving the controllability, safety and ride comfort of the automobile.

[0043] As a specific solution of the above embodiment, the specific number of the heat dissipation holes 4 can be two, three, four, five, six, and the like. Moreover, the brake disc body 1, the brake disc mounting cap brim 2, and the neck portion 3 are integrally formed.

[0044] Embodiment 2

[0045] As Figures 2 to 6 On the basis of Embodiment 1, the brake disc body 1 is provided with a plurality of air ducts 11 which are opened through the brake disc body 1 in the radial direction, and each of the air ducts 11 is uniformly distributed in the axial direction on the brake disc body 1, and each of the heat dissipation holes 4 is communicated with the corresponding air duct 11.

[0046] The beneficial effect of the preferred solution in the above embodiment is that after the air enters the back of the neck portion 3 through the heat dissipation hole 4, it can enter the air duct 11, take away the heat of the brake disc body, accelerate the cooling of the brake disc, and help to improve the warping deformation of the brake disc body relative to the brake disc mounting cap brim due to the sharp rise in the temperature of the brake disc.

[0047] Embodiment 3

[0048] As Figure 5 And Figure 6 On the basis of Embodiments 1 and 2, each of the heat dissipation holes 4 is provided with an outer opening 41 which is opened in the direction towards the brake disc mounting cap brim 2 and an inner opening 42 which is opened in the direction away from the brake disc mounting cap brim 2, and the inner opening 42 is located in the opening direction of the corresponding air duct 11.

[0049] The beneficial effect of the preferred solution in the above embodiment is that in actual use, the air enters the heat dissipation hole 4 through the outer opening 41 and is discharged from the inner opening 42, at this time, since the inner opening 42 is located in the opening direction of the corresponding air duct 11, the entering amount of the air into the air duct 11 can be relatively increased, and the heat dissipation effect on the brake disc can be improved.

[0050] Embodiment 4

[0051] As Figure 5 And Figure 6 On the basis of Embodiments 1-3, the outer opening 41 and the inner opening 42 are both chamfered to form a round surface structure.

[0052] The beneficial effect of the preferred solution in the above embodiment is to disperse stress through the round surface structure and improve the deformation resistance of the entire brake disc.

[0053] Embodiment 5

[0054] As Figure 5 And Figure 6 On the basis of Embodiments 1-4, a heat dissipation rib 12 is formed between the adjacent two air ducts 11, and each of the heat dissipation ribs 12 and the corresponding air duct 11 forms an arc surface structure.

[0055] The beneficial effect of the preferred solution in the above embodiment is that, in the heat dissipation process, the air entering into the air duct 11 can flow normally, and the stress can be dispersed by the arc surface structure, thereby improving the deformation resistance of the entire brake disc.

[0056] On the basis of the above embodiment, the air groove 13 is concave on the inner side and the outer side of the brake disc body 1, and the air groove 13 is connected to each air duct 11 to form a larger air containing space, so that the air discharged from the heat dissipation hole 4 can directly enter into the air groove 13 and then be discharged into the air duct 11, thereby improving the heat dissipation effect.

[0057] Embodiment 6

[0058] As Figures 2 to 6 On the basis of embodiments 1-5, the neck portion 3 includes a connecting ring 31 fixedly connected to the inner side edge of the brake disc body 1, and a mounting ring 32 fixedly connected to the other end of the connecting ring 31, and the other end of the mounting ring 32 is fixedly connected to the edge end of the brake disc mounting hat 2, and each heat dissipation hole 4 is circumferentially distributed on the connecting ring 31.

[0059] The beneficial effect of the preferred solution in the above embodiment is that the connecting ring 31 and the mounting ring 32 are connected to realize the fixed connection of the brake disc body 1 and the brake disc mounting hat, and the mounting ring 32 can be used as a bearing mounting position during the installation of the brake disc, thereby realizing the stable installation of the entire brake disc.

[0060] Embodiment 7

[0061] As Figures 2 to 6 On the basis of embodiments 1-6, the connecting ring 31 includes an inclined ring 311 fixedly connected to the inner side edge of the brake disc body 1, and an arc-shaped ring 312 fixedly connected to the other end of the inclined ring 311, and the other end of the arc-shaped ring 312 is fixedly connected to one end of the mounting ring 32, and the one end of the inclined ring 311 is closer to the brake disc mounting hat 2 than the other end, and the inclined ring 311 and the arc-shaped ring 312 jointly form an avoidance groove 313 opening in the direction of the brake disc mounting hat 2, and each heat dissipation hole 4 is formed in the inclined ring 311 or the arc-shaped ring 312.

[0062] The beneficial effect of the preferred solution in the above embodiment is that the avoidance groove 313 is formed to have an avoidance effect, so that the bearing can be smoothly installed on the outer side of the mounting ring 32, and the air can smoothly enter into the heat dissipation hole 4.

[0063] As one of the specific solutions of the above-mentioned embodiments, each heat dissipation hole 4 is arranged in the inclined ring 311, or in the arc-shaped ring 312, or respectively in the inclined ring 311 and the arc-shaped ring 312, and is opened along the axial direction of the connecting ring 31.

[0064] As the second specific solution of the above-mentioned embodiments, each heat dissipation hole 4 is arranged in the inclined ring 311 and is arranged along a direction perpendicular to the plane in which it is arranged, so that the hole direction of the heat dissipation hole 4 forms an acute angle with the axial direction of the inclined ring 311, and the inner opening 42 of the heat dissipation hole 4 is arranged towards the opening direction of the air duct 11, and the opening direction of the heat dissipation hole 4 forms an obtuse angle structure with the opening direction of the air duct 11, so that the air discharged from the inner opening 42 of the heat dissipation hole 4 can be maximized to enter the air groove 13 and then enter the air duct 11, thereby improving the heat dissipation effect on the brake disc.

[0065] Embodiment 8

[0066] As Figure 4 On the basis of embodiments 1-7, the heat dissipation hole 4 is arranged with twelve, and is distributed in the neck portion 3.

[0067] The beneficial effect of the preferred solution in the above-mentioned embodiments is to ensure that the air passes through each heat dissipation hole 4 smoothly, thereby achieving effective heat dissipation of the brake disc.

[0068] Embodiment 9

[0069] As Figure 1 And Figure 2 On the basis of embodiments 1-8, the brake disc mounting hat 2 is provided with a plurality of mounting holes 21, and each mounting hole 21 is uniformly and circumferentially distributed around the axis of the brake disc mounting hat 2.

[0070] The beneficial effect of the preferred solution in the above-mentioned embodiments is to realize the mounting and fixing of the entire brake disc through each mounting hole 21.

[0071] Embodiment 10

[0072] As Figure 1 And Figure 2 On the basis of embodiments 1-9, the brake disc mounting hat 2 is provided with a plurality of weight-reducing grooves 22 on the outer side away from the brake disc body 1.

[0073] The beneficial effect of the preferred solution in the above-mentioned embodiments is to realize the weight reduction of the entire brake disc through the arrangement of each weight-reducing groove 22.

[0074] In actual use, the brake disc neck 3 is provided with heat dissipation holes 4. More air enters the air duct 11 through the heat dissipation holes 4, which carries away the heat of the brake disc body 1 and accelerates the cooling of the brake disc. This helps to improve the warping deformation of the brake disc body 1 relative to the brake disc mounting cap 2 caused by the rapid increase in brake disc temperature. In addition, the heat dissipation holes 4 also serve to isolate the thermal deformation of the brake disc body 1, further avoiding brake vibration, brake noise, and brake failure caused by thermal cone deformation, thereby improving the vehicle's handling, safety, and ride comfort.

[0075] In CAE analysis, the heat-induced warping deformation of traditional brake discs exceeded 0.2 mm (e.g., Figure 7 Warping and deformation of the brake disc can lead to brake vibration, abnormal brake noise, and even brake failure, which reduces the vehicle's handling and ride comfort, increases braking energy consumption, and increases safety risks.

[0076] The heat-induced warping deformation of this invention is significantly reduced (e.g., Figure 8 It is significantly superior to traditional brake discs, effectively preventing problems such as brake vibration, abnormal brake noise, and brake failure caused by brake disc warping and deformation due to heat. This improves the vehicle's handling and ride comfort, reduces braking energy consumption, and lowers safety risks.

[0077] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0078] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0079] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can indirectly connect through intermediate medium, can be the communication of two element internals or the interaction of two elements, unless another definite limitation.For ordinary skilled in the art, can understand the specific meaning of the above terms in the utility model according to specific circumstances.

[0080] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can indirectly connect through intermediate medium, can be the communication of two element internals or the interaction of two elements, unless another definite limitation.For ordinary skilled in the art, can understand the specific meaning of the above terms in the utility model according to specific circumstances.

[0081] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0082] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and modify the above-mentioned embodiments within the scope of the utility model.

Claims

1. A brake disc which can improve heat distortion, characterized by, The brake disc body (1) and the neck (3) are both annular structures, one end of the neck (3) is fixedly connected to the inner side edge of the brake disc body (1) in the axial direction, and is fixedly connected to the inner side of one end of the brake disc body (1) in the axial direction, the other end is fixedly connected to the edge end of the brake disc mounting hat brim (2), a plurality of heat dissipation holes (4) are formed through one end of the neck (3), and the heat dissipation holes (4) are uniformly distributed in the circumferential direction of the neck (3).

2. The brake disc capable of improving thermal deformation according to claim 1, wherein The brake disc body (1) is provided with a plurality of air channels (11) formed through in the radial direction, the air channels (11) are uniformly distributed in the axial direction of the brake disc body (1), and the heat dissipation holes (4) are all connected to the corresponding air channels (11).

3. The brake disc capable of improving thermal deformation according to claim 2, wherein Each of the heat dissipation holes (4) is provided with an outer opening (41) opening in the direction of the brake disc mounting hat brim (2) and an inner opening (42) opening in the direction away from the brake disc mounting hat brim (2), and the inner opening (42) is located in the opening direction of the corresponding air channel (11).

4. The brake disc capable of improving thermal deformation according to claim 3, wherein The outer opening (41) and the inner opening (42) are both chamfered to form a round corner surface structure.

5. The brake disc capable of improving thermal deformation according to claim 2, wherein The heat dissipation ribs (12) are formed between adjacent two air channels (11), and each of the heat dissipation ribs (12) and the corresponding air channel (11) form an arc surface structure.

6. The brake disc capable of improving thermal deformation according to claim 1, wherein The neck (3) includes a connecting ring (31) fixedly connected to the inner side edge of the brake disc body (1) in the circumferential direction and a mounting ring (32) fixedly connected to the other end of the connecting ring (31) in the circumferential direction, and the other end of the mounting ring (32) is fixedly connected to the edge end of the brake disc mounting hat brim (2), and the heat dissipation holes (4) are uniformly distributed in the circumferential direction of the connecting ring (31).

7. The brake disc according to claim 6, wherein The connecting ring (31) includes an inclined ring (311) fixedly connected to the inner side edge of the brake disc body (1) in the circumferential direction and an arc-shaped ring (312) fixedly connected to the other end of the inclined ring (311) in the circumferential direction, and the other end of the arc-shaped ring (312) is fixedly connected to one end of the mounting ring (32), and one end of the inclined ring (311) is closer to the brake disc mounting hat brim (2) than the other end, and the inclined ring (311) and the arc-shaped ring (312) jointly form an avoidance groove (313) opening in the direction of the brake disc mounting hat brim (2), and the heat dissipation holes (4) are formed in the inclined ring (311) or the arc-shaped ring (312).

8. The brake disc capable of improving thermal deformation according to claim 1, wherein There are twelve heat dissipation holes (4) formed in the neck (3).

9. The brake disc according to any one of claims 1 to 8, wherein The brake disc mounting hat brim (2) is provided with a plurality of mounting holes (21) formed through, and the mounting holes (21) are uniformly and evenly distributed in the circumferential direction around the axis of the brake disc mounting hat brim (2).

10. The brake disc capable of improving thermal deformation according to any one of claims 1-8, characterized in that, The brake disc mounting hat brim (2) is provided with a plurality of weight reduction grooves (22) formed on the outer side away from the brake disc body (1).

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