Mounting structure between hub bearing and brake disc

Abstract

According to the installation structure between the hub bearing and the brake disc, the hub bearing comprises a flange inner ring and a flange outer ring, a bearing unit is arranged between the flange inner ring and the flange outer ring, the brake disc is fixed to the flange inner ring, and an assembly groove is formed in the center of the brake disc; the hub bearing penetrates through the assembling groove, the flange inner ring and the flange outer ring are located on the two sides of the brake disc respectively, a contact part is arranged on the brake disc in the direction facing the flange inner ring, the contact part is attached to the flange inner ring, and the flange inner ring is fixed to the brake disc through the contact part. The hub bearing assembly has the beneficial effects that the hub bearing penetrates through the assembly groove and is connected with the brake disc, so that the axial size after assembly can be reduced by fully utilizing the overlapped part of the assembly groove and the hub bearing; the problem of interference between the brake disc and the inner ring of the flange does not need to be considered, so that the radial size after assembly is reduced, and the overall structure is more compact after the hub bearing and the brake disc are installed.

Description

Technical Field

[0001] The utility model relates to a mounting structure, in particular to a mounting structure between a wheel hub bearing and a brake disc. Background Art

[0002] The mounting structure of the wheel hub bearing and the brake disc is designed to fit tightly, and the brake disc is usually fixed directly to the inner ring of the wheel hub bearing flange. This design allows the brake disc to rotate synchronously with the wheel, ensuring that stable braking force can be provided during braking. The precise fit of the bearing and the brake disc is crucial to reducing vibration and noise and improving braking efficiency.

[0003] like Figure 1 The invention provides a mounting structure between a brake disc and a wheel hub bearing which is currently commonly used in the market. The brake disc is mounted on the outer side of the inner ring of the flange and is fixed to the inner ring of the flange by fasteners. To prevent interference between other components of the wheel hub bearing and the brake disc, other components of the wheel hub bearing can only be arranged in a direction away from the inner ring of the flange, which will cause the outer diameter of the assembly of the brake disc and the wheel hub bearing to become larger in the axial direction after installation. Since the brake disc must be sleeved on the outer side of the inner ring of the flange, a protrusion for accommodating the inner ring of the flange must be provided at the center of the brake disc to prevent interference between the outer diameter of the inner ring of the flange and the brake disc, and the inner diameter of the protrusion must be larger than the outer diameter of the inner ring of the flange, which will cause the outer diameter of the wheel hub bearing in the radial direction to become larger after installation. In summary, it can be seen that the wheel hub bearing in the prior art becomes larger based on its axial and radial dimensions after installation, so its overall volume will also be too large, and if the assembly of the wheel hub bearing occupies too large a position in the tire, it will affect the dimensions of other components of the tire and thus affect the overall performance of the tire. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a more compact mounting structure between a wheel hub bearing and a brake disc.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is as follows: a mounting structure between a wheel hub bearing and a brake disc, the wheel hub bearing comprising a flange inner ring and a flange outer ring, a bearing unit being arranged between the flange inner ring and the flange outer ring, the brake disc being fixed to the flange inner ring, an assembly groove being arranged at the center of the brake disc, the wheel hub bearing passing through the assembly groove and the flange inner ring and the flange outer ring being arranged on both sides of the brake disc, a contact portion being arranged on the brake disc facing the flange inner ring, the contact portion being in contact with the flange inner ring and the flange inner ring being fixed to the brake disc through the contact portion.

[0006] The beneficial effects of the utility model are as follows: the wheel hub bearing is connected to the brake disc through the assembly groove, so that the overlapping part of the assembly groove and the wheel hub bearing can be fully utilized to reduce the axial size after assembly. On the other hand, since the inner ring of the flange is fixed on one side of the brake disc, the brake disc does not need to consider the interference problem with the inner ring of the flange, so as to reduce the radial size after assembly, thereby making the overall structure of the wheel hub bearing and the brake disc more compact after installation. In addition, since the brake disc and the inner ring of the flange are attached together through the contact part, the thickness of the inner ring of the flange on one side can be prevented from being too thick, thereby making the structures of the various components of the wheel hub bearing and the brake disc more reasonable.

[0007] Furthermore, the wheel hub bearing includes a mounting hole located at the center thereof, and the flange inner ring includes a fixing plate arranged outside the mounting hole, the fixing plate corresponds to the outer shape of the contact portion, and countersunk holes and fixing holes are respectively provided at corresponding positions of the fixing plate and the contact portion in the circumferential direction, and the fixing plate and the contact portion are fixed by inserting fasteners in the countersunk holes and the fixing holes, and the countersunk holes are used to hide the fasteners connecting the fixing plate and the contact portion.

[0008] The above arrangement ensures that the volume of the inner ring of the flange occupied by the fixing plate will not be too large, thereby effectively reducing the weight of the wheel hub bearing. At the same time, the corresponding and fitting shapes of the fixing plate and the contact portion can reduce the gap between the inner ring of the flange and the brake disc, thereby reducing the axial size; and the arrangement of the countersunk hole can hide the fastener therein, thereby making the structure of this solution more compact after assembly.

[0009] Furthermore, the flange inner ring also includes a fitting portion, the fitting portion is arranged corresponding to the number of countersunk holes and the countersunk holes are located on the fitting portion.

[0010] The outside of the fitting part on the outer surface of the inner ring of the flange corresponding to the brake disc can be hollowed out to further reduce its own weight, and several fitting parts can be arranged in the circumferential direction to strengthen the connection strength between the inner ring of the flange and the brake disc, thereby preventing relative rotation between the inner ring of the flange and the brake disc.

[0011] Furthermore, a heat dissipation groove is provided in the assembly groove, and the heat dissipation groove extends from the edge of the assembly groove toward the outer diameter direction of the brake disc.

[0012] The heat dissipation groove is hidden inside the assembly groove, that is, both sides of the heat dissipation groove are the outer shell of the brake disc, thereby further effectively utilizing the thickness of the brake disc itself, making the structure of this solution more compact after assembly.

[0013] Furthermore, the inner ring of the flange also includes an insertion portion, one end of which is connected to the fixing plate and extends toward the assembly groove, an elastic fixing piece is arranged on the outer peripheral surface of the insertion portion, and a positioning hole is arranged in the assembly groove corresponding to the elastic fixing piece.

[0014] The outer surface of the inserting portion provided with the elastic fixing piece can be inclined, and the side of the inclined outer surface connected to the fixing disc contacts the brake disc after assembly. The inclined outer surface can not only reduce the difficulty of installing the inner ring of the flange and the brake disc. Moreover, the elastic fixing piece rebounds after entering the assembly groove and cooperates with the positioning hole, which can not only strengthen the connection between the inner ring of the flange and the brake disc, but also provide a clamping force when the fixing bolt is loosened, so as to prevent the inner ring of the flange and the brake disc from rotating relative to each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the prior art;

[0016] Figure 2 It is an axonometric diagram of an embodiment of the utility model;

[0017] Figure 3 This is an axonometric view of a brake disc according to an embodiment of the utility model;

[0018] Figure 4 This is a partial enlarged view of the flange inner ring fixing plate of the embodiment of the utility model;

[0019] Figure 5 A cross-sectional view of an embodiment of the utility model;

[0020] Figure 6 It is a partial enlarged view of the insertion part of the embodiment of the utility model. DETAILED DESCRIPTION

[0021] The utility model embodiment provides a mounting structure between a wheel hub bearing and a brake disc as shown in FIG. Figure 1-6 As shown: it includes a wheel hub bearing 1 and a brake disc 2 connected thereto, the wheel hub bearing 1 includes a flange inner ring 11, a flange outer ring 12 and a bearing unit (not shown in the figure) located between the two, and the wheel hub bearing 1 is connected to the brake disc 2 via the flange inner ring 11.

[0022] The wheel hub bearing 1 also includes a mounting hole 13 located at the center thereof. The side of the flange inner ring 11 facing the brake disc 1 is a fixed disc 111, and the fixed disc 111 is provided with fitting portions 113 at intervals in the circumferential direction, and a countersunk hole 112 is provided at the center of each fitting portion 113. The flange inner ring 1 is also provided with an obliquely arranged inserting portion 114 facing the brake disc 2. One end of the inserting portion 114 is connected to the fixed disc 111, and the other end thereof is provided with a gradually decreasing outer diameter when extending toward the brake disc 2. An elastic fixing member 115 is provided on the inserting portion 114.

[0023] The brake disc 2 includes a mounting groove 21 located at the center thereof for the hub bearing 1 to pass through and a contact portion 22 disposed toward the flange inner ring 11. A fixing hole 221 is disposed on the contact portion 22 at a position corresponding to the countersunk hole 112. The countersunk hole 112 and the fixing hole 221 cooperate to allow the fastener 3 to pass through and fix the flange inner ring 11 and the brake disc 2. A heat dissipation groove 23 extending toward the edge of the brake disc 2 is disposed on the inner wall of the mounting groove 21 near the flange outer ring 12. A positioning hole 222 is disposed on the inner wall of the mounting groove 21 near the flange inner ring 11 corresponding to the elastic fixing member 115 to cooperate with the elastic fixing member 115 to form a strengthened fixation.

[0024] The following briefly describes the installation process between the flange inner ring 11 and the brake disc 2 of this embodiment: one side of the fixing disc 111 of the flange inner ring 11 is inserted into the assembly groove 21, at which time the elastic fixing member 115 cooperates with the positioning hole 222 to form a preliminary fixation, and then the countersunk hole 112 is aligned with the fixing hole 221 and the fastener 3 is inserted to complete the installation between the flange inner ring 11 and the brake disc 3.

[0025] The above embodiment is only one of the preferred specific embodiments of the present invention. Common changes and substitutions made by those skilled in the art within the technical solution of the present invention are all included in the protection scope of the present invention.

Claims

1. A mounting structure between a wheel hub bearing and a brake disc, wherein the wheel hub bearing comprises a flange inner ring and a flange outer ring, a bearing unit is provided between the flange inner ring and the flange outer ring, and the brake disc is fixed to the flange inner ring, characterized in that: A mounting groove is arranged at the center of the brake disc, the wheel hub bearing passes through the mounting groove and the flange inner ring and the flange outer ring are respectively located on both sides of the brake disc, and a contact portion is arranged on the brake disc toward the flange inner ring, the contact portion is in contact with the flange inner ring and the flange inner ring is fixed to the brake disc through the contact portion.

2. The mounting structure between the wheel hub bearing and the brake disc according to claim 1, characterized in that: The wheel hub bearing includes a mounting hole located at the center thereof, and the flange inner ring includes a fixing plate arranged outside the mounting hole, the fixing plate corresponds to the outer shape of the contact portion, and countersunk holes and fixing holes are respectively arranged at corresponding positions of the fixing plate and the contact portion in the circumferential direction, and the fixing plate and the contact portion are fixed by fasteners inserted into the countersunk holes and the fixing holes, and the countersunk holes are used to hide the fasteners connecting the fixing plate and the contact portion.

3. The mounting structure between the wheel hub bearing and the brake disc according to claim 2, characterized in that: The flange inner ring also includes a fitting portion, which is arranged corresponding to the number of countersunk holes and the countersunk holes are located on the fitting portion.

4. The mounting structure between the wheel hub bearing and the brake disc according to claim 1, characterized in that: A heat dissipation groove is also provided in the assembly groove, and the heat dissipation groove extends from the edge of the assembly groove toward the outer diameter direction of the brake disc.

5. The mounting structure between the wheel hub bearing and the brake disc according to claim 1, characterized in that: The inner ring of the flange also includes an inserting portion, one end of which is connected to the fixing plate and extends toward the assembly groove. An elastic fixing piece is arranged on the outer peripheral surface of the inserting portion, and a positioning hole is arranged in the assembly groove corresponding to the elastic fixing piece.

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