Hub bearing and automobile hub

Abstract

The invention relates to the technical field of hub bearings, and provides a hub bearing and an automobile hub, the hub bearing comprises an inner ring, an outer ring and a rolling body, the inner ring is provided with a bearing seat, the outer circumferential wall of the bearing seat is sleeved with the inner ring, the outer circumferential side of the inner ring is sleeved with the outer ring, and the rolling body is embedded between the inner ring and the outer ring; a positioning cylinder is arranged at one end of the bearing seat and used for being connected with an automobile hub in an inserted mode for positioning. A first flange plate used for being connected with an automobile hub is arranged on the peripheral wall of the bearing seat, a plurality of first connecting holes are formed in the first flange plate, and the first connecting holes are distributed around the central axis of the positioning cylinder at intervals. According to the hub bearing, the disassembly and assembly convenience between the hub bearing and the automobile hub can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of wheel hub bearings, and in particular to a wheel hub bearing and an automobile wheel hub. Background Art

[0002] The primary function of a wheel hub bearing is to bear weight and provide precise guidance for the rotation of the wheel hub. It bears both axial and radial loads and is therefore a crucial component. A wheel hub bearing primarily consists of an inner ring for connection to the vehicle's wheel hub, an outer ring for connection to the vehicle's steering knuckle, and rolling elements positioned between the inner and outer rings.

[0003] In the prior art, a common method for connecting the inner ring of a bearing to an automotive wheel hub is through an interference fit. This involves manufacturing the inner ring with a diameter slightly larger than the wheel hub's aperture. Pressure or temperature differentials are then used to create an interference fit between the inner ring and the wheel hub, achieving a secure connection. However, this method is cumbersome, time-consuming, and labor-intensive to disassemble, and can easily damage the bearing or wheel hub during the disassembly process. Therefore, further improvements are needed. Summary of the Invention

[0004] In order to improve the convenience of disassembly and assembly between a wheel hub bearing and an automobile wheel hub, the present application provides a wheel hub bearing and an automobile wheel hub.

[0005] In the first aspect, the present application provides a hub bearing adopting the following technical solution: A wheel hub bearing comprises an inner ring, an outer ring and rolling elements, wherein the inner ring is provided with a bearing seat, the inner ring is sleeved on the outer peripheral wall of the bearing seat, the outer ring is sleeved on the outer peripheral side of the inner ring, and the rolling elements are embedded between the inner ring and the outer ring; a positioning cylinder is provided at one end of the bearing seat, and the positioning cylinder is used for plugging and positioning with the automobile wheel hub; the outer peripheral wall of the bearing seat is provided with a first flange for connecting to the automobile wheel hub, the first flange is provided with a plurality of first connecting holes, and the plurality of first connecting holes are arranged at intervals around the central axis of the positioning cylinder.

[0006] By adopting the above technical solution, when the wheel hub bearing is installed on the automobile wheel hub, the positioning tube of the bearing seat is inserted and positioned with the automobile wheel hub, thereby quickly maintaining the automobile wheel hub and the wheel hub bearing coaxially. The first flange is then connected to the automobile wheel hub by bolting using the multiple first connection holes of the first flange, thereby quickly installing the automobile wheel hub on the inner ring bearing seat, greatly improving the convenience of assembly and disassembly between the wheel hub bearing and the automobile wheel hub.

[0007] In a second aspect, the present application provides an automobile wheel hub adopting the following technical solution: A car wheel hub, used to connect the above-mentioned wheel hub bearing, includes a rim, a spoke and a mounting seat, wherein the outer end of the spoke is connected to the rim, and the inner end of the spoke is connected to the mounting seat; the mounting seat is provided with a center hole for the positioning tube to be inserted and positioned, and the mounting seat is provided with a second connecting hole, and a plurality of second connecting holes are arranged at intervals around the central axis of the center hole, and the plurality of second connecting holes are arranged corresponding to the plurality of first connecting holes; the first flange is connected to a locking bolt, and the locking bolt passes through the first connecting hole and the second connecting hole in sequence, and a locking nut is provided in the second connecting hole, and the locking nut is sleeved on the locking bolt and threadedly connected to the locking bolt.

[0008] By adopting the above technical solution, when the wheel hub bearing is installed on the automobile wheel hub, the positioning cylinder of the bearing seat is inserted into the center hole of the mounting seat, thereby realizing rapid centering between the rim and the bearing seat, so that the rim and the bearing seat remain coaxial; then, locking nuts are sequentially installed in multiple second connecting holes, and the locking nuts are used to lock the locking bolts, thereby fixing the mounting seat to the bearing seat, thereby improving the convenience of disassembly and assembly of the overall structure.

[0009] Optionally, a mounting groove is provided in the mounting seat, and the mounting groove is annular around the central axis of the center hole, and the mounting groove is located on the side of the second connecting hole close to the first flange, and each of the second connecting holes is connected to the mounting groove; a mounting ring is slidably installed in the mounting groove, and the mounting ring is provided with a through hole for a locking bolt to pass through; the mounting groove has a first point position and a second point position, and the second point position is located on the side of the first point position close to the second connecting hole; a first spring is provided between the mounting ring and the mounting seat, and under normal circumstances, the first spring forces the mounting ring to slide to the second point position; when the locking nut is tightened with the locking bolt, the mounting ring slides to the first point position, and the first spring is deformed and has elastic force.

[0010] By adopting the above technical solution, under normal conditions, the mounting ring slides to the second point of the mounting groove under the action of the first spring, and the locking nut is rotated to lock the locking bolt. During the axial sliding of the locking nut along the locking bolt, it can push the mounting ring and force the mounting ring to slide to the first point of the mounting groove, thereby squeezing the first spring and forcing the first spring to contract to generate elastic force; this elastic force reacts on the locking nut, thereby keeping the locking nut tight, reducing the possibility of the locking nut rotating freely and falling off, and improving the stability of the overall structure.

[0011] Optionally, the mounting ring is provided with a plurality of docking blocks, and the plurality of docking blocks are provided corresponding to the plurality of locking nuts, and each of the docking blocks is slidably installed on the mounting ring so as to be able to slide radially along the mounting ring; the outer peripheral wall of the positioning cylinder is provided with a plurality of docking grooves, and the plurality of docking grooves are provided corresponding to the plurality of docking blocks; a second spring is provided between each of the docking blocks and the mounting ring, and when the mounting ring is located at the second point position, the second spring forces the docking block to partially extend into the center hole and be inserted into the docking groove corresponding to the positioning cylinder; each of the docking blocks is provided with an unlocking member, and when the locking nut abuts against the mounting ring, the unlocking member forces the corresponding docking block to disengage from the corresponding docking groove.

[0012] By adopting the above technical solution, when the positioning cylinder of the bearing seat is inserted into the center hole of the mounting seat, the docking block, under the action of the second spring, partially extends into the center hole and is inserted into the corresponding docking groove of the positioning cylinder, thereby achieving a clamping and fixing between the mounting ring and the positioning cylinder. Then, multiple locking nuts are rotated in sequence, forcing the locking nuts to abut against the mounting ring. At this time, the locking nuts force the corresponding docking blocks out of the corresponding docking grooves through the unlocking member. When all the locking nuts abut the mounting ring, all the docking blocks are forced out of the docking grooves, thereby releasing the retaining effect of the mounting ring. At this time, the multiple locking nuts are rotated in sequence again, so that the locking nuts can tighten the corresponding locking bolts. In this state, the mounting ring can be forced to slide from the second point to the first point.

[0013] The effect achieved is that the mounting ring is initially located at the second position and relatively fixed under the locking limit of the docking block and the docking groove, preventing the possibility of overtightening the locking nut at one time. The operator is forced to rotate all the locking nuts in sequence and force all the locking nuts to abut the mounting ring before unlocking the mounting ring and continuing to rotate the locking nuts to slide the mounting ring to the first position. This prevents the operator from overtightening a locking nut at one time when tightening the locking nuts, thereby improving the connection between the mounting base and the first flange.

[0014] In addition, the setting of the docking block and the docking groove adds a "safety" for the mounting seat and the bearing seat. Even if the locking nut accidentally disengages from the locking bolt, the mounting ring can be reset to the second point under the action of the first spring. At this time, the docking block can be embedded in the docking groove under the action of the second spring, reducing the possibility of direct separation between the mounting seat and the bearing seat due to the disengagement of the locking nut, thereby improving the safety of the overall structure.

[0015] Optionally, the unlocking member includes an unlocking rod, which is slidably installed in the mounting ring, and the docking block is provided with an unlocking slot for the unlocking rod to pass through. Under normal circumstances, the second spring forces one end of the unlocking rod to extend to the side of the mounting ring close to the locking nut through the unlocking slot of the docking block; when the mounting ring is located at the second point position and drives the locking nut to abut against the mounting ring, the locking nut pushes the unlocking slot of the docking block through the unlocking rod to force the docking block to disengage from the corresponding docking slot.

[0016] By adopting the above technical solution, under normal conditions (when the locking nut is not mounted on the locking bolt), the second spring forces one end of the unlocking rod to extend to the side of the mounting ring close to the locking nut through the unlocking slot of the docking block, allowing the locking nut to push. The locking nut is mounted on the locking bolt and rotated, causing the locking nut to slide toward the mounting ring. During this process, the locking nut can push one end of the unlocking rod, thereby pushing the docking block through the inner wall of the unlocking slot, forcing the docking block to disengage from the corresponding docking slot. After repeating the above action and rotating multiple locking nuts in sequence, the mounting ring can be completely unlocked; at this time, by tightening the multiple locking nuts one by one by rotating them diagonally, the mounting ring can be forced to slide from the second point to the first point, completing the connection between the mounting seat and the bearing seat, and improving the connection quality between the mounting seat and the bearing seat.

[0017] Optionally, the end of the positioning cylinder away from the bearing seat has a guide surface, and when the positioning cylinder is inserted into the center hole, the positioning cylinder forces the docking block to move out of the center hole through the guide surface.

[0018] By adopting the above technical solution and setting the guide surface, when the positioning cylinder of the bearing seat can be inserted into the center hole, the guide surface forces the docking block to move out of the center hole, thereby reducing the possibility that the docking block will block the center hole position and cause the positioning cylinder to be unable to be inserted into the center hole.

[0019] Optionally, a connecting sleeve is provided at one end of the center hole away from the bearing seat, a finishing block is provided in the connecting sleeve, and the finishing block is provided with a sealing component for sealing the docking groove.

[0020] By adopting the above technical solution, when the mounting seat and the bearing seat need to be forced to separate (that is, when the automobile wheel hub needs to be disassembled), the docking groove is blocked by the blocking assembly, and then all the locking nuts are removed in sequence. The mounting ring is reset to the second point under the action of the first spring. At this time, since the docking groove is blocked, the mounting seat can be pulled out, so that the mounting seat and the bearing seat are separated, thereby improving the operational convenience of the overall structure.

[0021] Optionally, the outer wall of the positioning cylinder is provided with multiple sliding grooves, and the multiple sliding grooves are corresponding to the multiple docking grooves, one end of each sliding groove is connected to the corresponding docking groove, and the other end passes through the end face of the positioning cylinder close to the decorative block; the blocking assembly includes a connecting ring, a blocking strip, a third spring and a limiter, the connecting ring is rotatably installed on the surface of the decorative block close to the positioning cylinder, the blocking strips are provided with multiple and corresponding to the multiple sliding grooves, one end of each blocking strip is connected to the connecting ring, and the other end is passed through the corresponding sliding groove and covers the docking groove corresponding to the sliding groove; the third spring is arranged between the connecting sleeve and the connecting ring, and under normal circumstances, the third spring forces the blocking strip to disengage from the docking groove; the limiter is arranged between the decorative block and the connecting sleeve to force the blocking strip to keep covering the docking groove.

[0022] By adopting the above technical solution, when the automobile wheel hub needs to be disassembled, the sealing strip is driven by the finishing block to slide toward the side close to the positioning cylinder, forcing the sealing strip to cover the docking groove. At this time, the sealing strip is forced to keep covering the docking groove by the limiter, and then the mounting seat can be disassembled by removing the locking nut, thereby improving the operational convenience of the overall structure.

[0023] Optionally, a movable groove is provided on the inner circumferential wall of the connecting sleeve, and the limiting member includes a limiting column, one end of the limiting column is connected to the outer circumferential wall of the finishing block, and the other end is slidably inserted in the movable groove; the movable groove includes a movable part and a rotating part, and the two ends of the movable part are extended along the central axis of the connecting sleeve, and the two ends of the movable part respectively form a third point position and a fourth point position, and the third point position is located on the side of the fourth point position close to the positioning cylinder; under normal circumstances, the third spring forces the limiting column of the finishing block to slide to the fourth point position, and the sealing strip disengages from the docking groove; the rotating part is annular around the central axis of the connecting sleeve and is connected to the third point position. When the limiting column is driven to slide to the third point position and turn into the rotating part, the end of the sealing strip away from the connecting ring covers the docking groove.

[0024] By adopting the above technical solution, when the automobile wheel hub is disassembled, the decorative block is pressed to force the limiting column of the decorative block to slide from the fourth point position to the third point position, thereby driving the blocking strip to slide and cover the docking groove; then the decorative block is rotated to force the limiting column of the decorative block to rotate into the rotating part of the movable groove, which can force the blocking block to remain covering the docking groove, so as to facilitate the separation between the mounting seat and the bearing seat, thereby greatly improving the operational convenience of the overall structure.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. Through the arrangement of the positioning cylinder and the first flange, when the wheel hub bearing is installed on the automobile wheel hub, the positioning cylinder of the bearing seat is inserted and positioned with the automobile wheel hub, thereby quickly maintaining the automobile hub and the wheel hub bearing coaxially. The first flange is then connected to the automobile wheel hub by bolts using the multiple first connection holes of the first flange, thereby quickly installing the automobile wheel hub on the inner ring bearing seat, greatly improving the convenience of assembly and disassembly between the wheel hub bearing and the automobile wheel hub. 2. Through the arrangement of the docking block and the docking groove, when the positioning cylinder of the bearing seat is inserted into the center hole of the mounting seat, the docking block, under the action of the second spring, partially extends into the center hole and is inserted into the corresponding docking groove of the positioning cylinder, thereby achieving a clamping and fixing between the mounting ring and the positioning cylinder. Then, multiple locking nuts are rotated in sequence, forcing the locking nuts to abut the mounting ring. At this time, the locking nuts force the corresponding docking blocks out of the corresponding docking grooves through the unlocking member; when all locking nuts abut the mounting ring, all docking blocks are forced out of the docking grooves, thereby releasing the retaining effect of the mounting ring; at this time, multiple locking nuts are rotated in sequence again, so that the locking nuts can tighten the corresponding locking bolts. In this state, the mounting ring can be forced to slide from the second point to the first point. The effect achieved is that the mounting ring is initially located at the second position and relatively fixed under the locking limit of the docking block and the docking groove, preventing the possibility of overtightening the locking nut at one time. The operator is forced to turn all the locking nuts in sequence and force all the locking nuts to abut the mounting ring before unlocking the mounting ring and continuing to turn the locking nuts to slide the mounting ring to the first position. This prevents the operator from overtightening a single locking nut at once when tightening the locking nuts, thereby improving the connection between the mounting base and the first flange. 3. Through the setting of the blocking component, when it is necessary to force the mounting seat and the bearing seat to separate (that is, when the automobile wheel hub needs to be removed), the blocking component is used to block the docking groove, and then all the locking nuts are removed in sequence. The mounting ring is reset to the second point under the action of the first spring. At this time, since the docking groove is blocked, the mounting seat can be pulled out to separate the mounting seat and the bearing seat, thereby improving the operational convenience of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of Example 1; Figure 2 This is a partial cross-sectional view of the rolling element of Example 1; Figure 3 This is a schematic structural diagram of the mounting base according to Example 2; Figure 4 is a partial cross-sectional view of a locking nut according to embodiment 2; Figure 5 is a partial cross-sectional view of the mounting groove of Example 3; Figure 6 is a partial cross-sectional view of a docking block according to embodiment 4; Figure 7 yes Figure 6 Enlarged view of point A in the middle; Figure 8 is a partial cross-sectional view of Example 4 showing the docking block being embedded in the docking groove; Figure 9 This is a schematic diagram of the structure of the sliding groove in Example 4; Figure 10 It is a partial cross-sectional view of the limiting column in embodiment 4.

[0027] Explanation of reference numerals: 1. Inner ring; 2. Outer ring; 21. Rolling element; 22. Cage; 23. Second flange; 231. Third connecting hole; 3. Bearing seat; 31. Positioning cylinder; 311. Docking groove; 312. Guide surface; 313. Sliding groove; 32. First flange; 321. First connecting hole; 33. Locking bolt; 4. Rim; 41. Spoke; 5. Mounting seat; 51. Center hole; 511. Countersunk groove; 52. Second connecting hole; 53. Locking nut; 54. Mounting groove; 541 , first point; 542, second point; 55, connecting sleeve; 551, moving part; 552, rotating part; 553, third point; 554, fourth point; 56, finishing block; 57, connecting groove; 6, mounting ring; 61, through hole; 62, first spring; 63, docking block; 631, second spring; 632, unlocking groove; 64, unlocking rod; 65, embedded groove; 651, unlocking hole; 7, blocking assembly; 71, connecting ring; 72, blocking strip; 73, third spring; 74, limiting column. DETAILED DESCRIPTION

[0028] The following combination Figures 1-10 This application is described in further detail.

[0029] Example 1: The embodiment of the present application discloses a wheel hub bearing.

[0030] Reference Figure 1 、 Figure 2 A wheel hub bearing includes an inner ring 1, an outer ring 2 and rolling elements 21. The inner ring 1 is connected to a bearing seat 3, and the inner ring 1 is sleeved on the outer peripheral wall of the bearing seat 3 and fixedly connected to the bearing seat 3. The outer ring 2 is sleeved on the outer peripheral side of the inner ring 1, and the rolling elements 21 are embedded between the inner ring 1 and the outer ring 2; the rolling elements 21 are balls, and multiple balls are arranged around the central axis of the inner ring 1; a retainer 22 is installed between the inner ring 1 and the outer ring 2, and the retainer 22 is used to limit the relative positions of multiple balls so that the multiple balls are evenly spaced around the central axis of the inner ring 1.

[0031] A positioning cylinder 31 is integrally formed at one end of the bearing seat 3, and the positioning cylinder 31 is coaxially arranged with the bearing seat 3, and the positioning cylinder 31 is used for plugging and positioning with the automobile wheel hub; a first flange 32 for connecting to the automobile wheel hub is fixedly installed on the outer peripheral wall of the bearing seat 3, and the first flange 32 is provided with a plurality of first connecting holes 321, and the plurality of first connecting holes 321 are arranged at intervals around the central axis of the positioning cylinder 31; a second flange 23 for connecting to the automobile steering knuckle is fixedly installed on the outer peripheral wall of the outer ring 2, and the second flange 23 is provided with a plurality of third connecting holes 231, and the plurality of third connecting holes 231 are arranged at intervals around the central axis of the positioning cylinder 31; in this embodiment, the number of the third connecting holes 231 is less than the number of the first connecting holes 321, and all the third connecting holes 231 and all the first connecting holes 321 are staggered around the central axis of the positioning cylinder 31.

[0032] The working principle of Example 1 of the present application is as follows: When the wheel hub bearing is installed on the automobile wheel hub, the positioning tube 31 of the bearing seat 3 is inserted and positioned with the automobile wheel hub to quickly maintain the automobile wheel hub and the wheel hub bearing coaxial. Then, the first flange 32 is connected to the automobile wheel hub by bolting using the multiple first connecting holes 321 of the first flange 32, thereby achieving rapid installation of the automobile wheel hub on the bearing seat 3 of the inner ring 1, greatly improving the convenience of assembly and disassembly between the wheel hub bearing and the automobile wheel hub.

[0033] Example 2: This example of the present application discloses an automobile wheel hub for connecting the wheel hub bearing of Example 1.

[0034] Reference Figure 3 、 Figure 4 A car wheel hub includes a rim 4, a spoke 41 and a mounting seat 5, wherein the outer end of the spoke 41 is fixedly connected to the inner circumferential wall of the rim 4, and the inner end of the spoke 41 is fixedly connected to the outer circumferential wall of the mounting seat 5. There are multiple spokes 41, and the multiple spokes 41 are arranged at intervals around the central axis of the mounting seat 5.

[0035] The mounting base 5 is provided with a central hole 51 for the positioning tube 31 to be inserted and positioned, and a second connecting hole 52 is provided on the end face of the mounting base 5. A plurality of second connecting holes 52 are arranged at intervals around the central axis of the central hole 51, and the plurality of second connecting holes 52 are arranged corresponding to the plurality of first connecting holes 321; the first flange 32 is connected to a locking bolt 33, and the locking bolt 33 passes through the first connecting hole 321 and the second connecting hole 52 in sequence, and a locking nut 53 is provided in the second connecting hole 52, and the locking nut 53 is sleeved on the locking bolt 33 and is threadedly connected to the locking bolt 33.

[0036] A finishing block 56 is installed in the center hole 51 of the mounting seat 5. The finishing block 56 is used to block the end of the center hole 51 away from the positioning tube 31. The finishing block 56 and the mounting seat 5 can be connected by a press-in interference fit or by a threaded connection. The surface of the finishing block 56 is used to install the car brand logo.

[0037] The implementation principle of Example 2 of the present application is as follows: when the wheel hub bearing is installed on the automobile wheel hub, the positioning cylinder 31 of the bearing seat 3 is inserted into the center hole 51 of the mounting seat 5, thereby realizing rapid centering between the rim 4 and the bearing seat 3, so that the rim 4 and the bearing seat 3 remain coaxial; then, the locking nuts 53 are sequentially installed in the multiple second connecting holes 52, so that the locking nuts 53 lock the locking bolts 33, thereby fixing the mounting seat 5 to the bearing seat 3, thereby improving the convenience of disassembly and assembly of the overall structure.

[0038] Example 3: This embodiment of the present application discloses an automobile wheel hub.

[0039] The difference between the automobile wheel hub disclosed in the embodiment of this application and embodiment 2 is that: Reference Figure 5 In this embodiment, a mounting groove 54 is provided in the mounting seat 5. The mounting groove 54 is annular around the central axis of the center hole 51. The mounting groove 54 is located on the side of the second connecting hole 52 close to the first flange 32. Each second connecting hole 52 is connected to the mounting groove 54. A mounting ring 6 is slidably installed in the mounting groove 54. The mounting ring 6 is annular around the central axis of the center hole 51. The mounting ring 6 is provided with a through hole 61 for the locking bolt 33 to pass through. A plurality of through holes 61 are provided and are corresponding to the plurality of locking bolts 33.

[0040] For ease of description, the side of the mounting groove 54 away from the second connecting hole 52 is defined as the first point 541, and the side of the mounting groove 54 close to the second connecting hole 52 is defined as the second point 542; a plurality of first springs 62 are installed between the mounting ring 6 and the inner wall of the mounting groove 54, and the plurality of first springs 62 are arranged at intervals around the central axis of the center hole 51. One end of the first spring 62 is fixedly connected to the mounting ring 6, and the other end is fixedly connected to the inner wall of the mounting groove 54. Under normal circumstances, the first spring 62 forces the mounting ring 6 to slide to the second point 542; when the locking nut 53 tightens the locking bolt 33, the locking nut 53 forces the mounting ring 6 to slide to the first point 541, and the first spring 62 is deformed and has elastic force.

[0041] The implementation principle of Example 3 of the present application is as follows: under normal conditions, the mounting ring 6 slides to the second point 542 of the mounting groove 54 under the action of the first spring 62, and the locking nut 53 is rotated to lock the locking bolt 33. During the axial sliding of the locking nut 53 along the locking bolt 33, it can push the mounting ring 6 and force the mounting ring 6 to slide from the second point 542 of the mounting groove 54 to the first point 541 of the mounting groove 54, thereby squeezing the first spring 62 and forcing the first spring 62 to contract to generate elastic force; this elastic force reacts to the locking nut 53, thereby keeping the locking nut 53 tight, reducing the possibility of the locking nut 53 rotating freely and causing the locking nut 53 to fall off, and improving the stability of the overall structure.

[0042] Example 4: This embodiment of the present application discloses an automobile wheel hub.

[0043] The difference between the automobile wheel hub disclosed in the embodiment of the present application and embodiment 3 is that: Reference Figure 6 、 Figure 7 In this embodiment, the outer wall of the mounting ring 6 is provided with a plurality of mounting grooves 65, which are corresponding to the plurality of locking nuts 53. A docking block 63 is slidably mounted in each mounting groove 65. The docking block 63 is slidably mounted to the mounting ring 6 via the mounting groove 65 so as to be able to slide radially along the mounting ring 6. The outer wall of the positioning cylinder 31 is provided with a plurality of docking grooves 311, which are corresponding to the plurality of docking blocks 63.

[0044] The inner wall of the mounting groove 54 is provided with a plurality of communicating grooves 57, and the plurality of communicating grooves 57 are arranged corresponding to the plurality of docking blocks 63. Each communicating groove 57 is connected to the central hole 51 of the mounting seat 5, and the communicating groove 57 is used for allowing the corresponding docking block 63 to pass through so that the corresponding docking block 63 can penetrate into the central hole 51; a second spring 631 is installed between each docking block 63 and the mounting ring 6, and one end of the first spring 62 is fixedly connected to the docking block 63, and the other end is fixedly connected to the inner wall of the embedding groove 65. When the mounting ring 6 is located at the second point position 542, the second spring 631 forces the docking block 63 to partially extend into the central hole 51 and be inserted into the docking groove 311 corresponding to the positioning cylinder 31.

[0045] Reference Figure 7 、 Figure 8Each docking block 63 is provided with an unlocking member. When the locking nut 53 abuts the mounting ring 6, the unlocking member forces the corresponding docking block 63 out of the corresponding docking slot 311. In this embodiment, the unlocking member is configured as an unlocking rod 64. An unlocking hole 651 is defined on the inner wall of the mounting groove 65 near the second connecting hole 52. The unlocking rod 64 is slidably mounted in the unlocking hole 651. An unlocking slot 632 is defined on the side wall of the docking block 63. One end of the unlocking rod 64 extends into the unlocking slot 632. In this embodiment, the unlocking rod 64 is arranged to be inclined from the end away from the second connecting hole 52 to the end near the second connecting hole 52, gradually toward the side near the center hole 51.

[0046] Normally, the second spring 631 forces one end of the unlocking lever 64 through the unlocking slot 632 of the docking block 63 to extend to the side of the mounting ring 6 near the locking nut 53, allowing the locking nut 53 to push against it. When the mounting ring 6 is at the second point 542 and the locking nut 53 is forced to abut against the mounting ring 6, the locking nut 53, through the unlocking lever 64, pushes the unlocking slot 632 of the docking block 63, forcing the docking block 63 out of the corresponding docking slot 311.

[0047] Reference Figure 7 、 Figure 9 In this embodiment, the end of the positioning cylinder 31 away from the bearing seat 3 has a guide surface 312. When the positioning cylinder 31 is inserted into the center hole 51, the positioning cylinder 31 forces the docking block 63 to move out of the center hole 51 through the guide surface 312; the inner wall of the end of the center hole 51 away from the bearing seat 3 is provided with a recessed groove 511, and a connecting sleeve 55 is embedded in the recessed groove 511. The central axis of the connecting sleeve 55 is arranged to coincide with the central axis of the center hole 51; the connecting sleeve 55 and the recessed groove 511 can be connected by a press-in interference fit or by a threaded connection.

[0048] Reference Figure 7 、 Figure 8 、 Figure 9 In this embodiment, the facing block 56 is installed within the connecting sleeve 55 and is equipped with a sealing assembly 7 for sealing the docking groove 311. The outer wall of the positioning tube 31 is provided with multiple sliding grooves 313, which correspond to the docking grooves 311. One end of each sliding groove 313 connects to the corresponding docking groove 311, and the other end extends through the end surface of the positioning tube 31 near the facing block 56. The sliding groove 313 and the corresponding docking groove 311 form a "T" shape. The sealing assembly 7 includes a connecting ring 71, a sealing strip 72, a third spring 73, and a stopper. The connecting ring 71 is rotatably mounted on the surface of the facing block 56 near the positioning tube 31 and is coaxial with the center hole 51.

[0049] There are multiple blocking strips 72 and they are arranged corresponding to the multiple sliding grooves 313. One end of each blocking strip 72 is fixedly connected to the connecting ring 71, and the other end is passed through the corresponding sliding groove 313 and covers the docking groove 311 corresponding to the sliding groove 313; one end of the third spring 73 is fixedly connected to the connecting sleeve 55, and the other end is fixedly connected to the connecting ring 71. Under normal circumstances, the third spring 73 forces the finishing block 56 to slide toward the side away from the positioning tube 31, so that the blocking strip 72 is separated from the docking groove 311.

[0050] Reference Figure 7 、 Figure 8 、 Figure 10 The cam 75 is in the process of being moved to the left of the locking cam 72 and the locking cam 73 is in the process of being moved to the left of the locking cam 72. When the cam 75 is in the process of being moved to the left of the locking cam 72, the locking cam 73 is in the process of being moved to the left of the locking cam 72.

[0051] The rotating portion 552 is annular around the central axis of the connecting sleeve 55 and communicates with the third point 553 . When the limiting post 74 is driven to slide to the third point 553 and rotate into the rotating portion 552 , the end of the sealing strip 72 away from the connecting ring 71 covers the docking groove 311 .

[0052] The implementation principle of Example 4 of the present application is as follows: when connecting the bearing seat 3 and the mounting seat 5, the positioning cylinder 31 is inserted into the center hole 51 of the mounting seat 5. The positioning cylinder 31 squeezes the docking block 63 through the guide surface 312. When the positioning cylinder 31 is fully inserted into the center hole 51, the docking block 63 is embedded in the docking groove 311 of the positioning cylinder 31 under the action of the second spring 631, thereby achieving the initial fixation between the bearing seat 3 and the mounting seat 5. Then, the locking nuts 53 are sequentially installed in the second connecting holes 52, and the locking nuts 53 are rotated to force multiple locking nuts 53 to abut against the mounting ring 6 one by one. During the process of the locking nuts 53 abutting against the mounting ring 6, the locking nuts 53 push the corresponding docking blocks 63 through the unlocking rod 64, forcing the docking blocks 63 to disengage from the corresponding docking grooves 311. After all the locking nuts 53 abut against the mounting ring 6, the mounting ring 6 and the positioning cylinder 31 are "separated". At this time, by sequentially rotating the locking nuts 53 , the corresponding locking bolts 33 can be tightened. That is, in this state, the mounting ring 6 can be forced to slide from the second point 542 to the first point 541 .

[0053] This design can achieve the following effects: in the initial state, the mounting ring 6 is located at the second point 542 and is relatively fixed under the engagement limit of the docking block 63 and the docking groove 311, thereby preventing the locking nut 53 from being overtightened at one time. The operator is forced to rotate all the locking nuts 53 in sequence and force all the locking nuts 53 to abut the mounting ring 6 before the mounting ring 6 can be unlocked and the locking nuts 53 can be further rotated to slide the mounting ring 6 to the first point 541. This prevents the operator from directly tightening a single locking nut 53 at once when tightening the locking nuts 53, thereby improving the connection between the mounting base 5 and the first flange 32.

[0054] In addition, the arrangement of the docking block 63 and the docking groove 311 adds a "safety" for the mounting seat 5 and the bearing seat 3. Even if the locking nut 53 accidentally disengages from the locking bolt 33, the mounting ring 6 can be reset to the second point 542 under the action of the first spring 62. At this time, the docking block 63 can be embedded in the docking groove 311 under the action of the second spring 631, reducing the possibility of direct separation between the mounting seat 5 and the bearing seat 3 due to the disengagement of the locking nut 53, thereby improving the safety of the overall structure.

[0055] The above are preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A wheel hub bearing, characterized in that: The invention comprises an inner ring (1), an outer ring (2) and a rolling body (21), wherein the inner ring (1) is provided with a bearing seat (3), the inner ring (1) is sleeved on the outer peripheral wall of the bearing seat (3), the outer ring (2) is sleeved on the outer peripheral side of the inner ring (1), and the rolling body (21) is embedded between the inner ring (1) and the outer ring (2); a positioning cylinder (31) is provided at one end of the bearing seat (3), and the positioning cylinder (31) is used for plugging and positioning with the automobile wheel hub; the outer peripheral wall of the bearing seat (3) is provided with a first flange (32) for connecting to the automobile wheel hub, and the first flange (32) is provided with a plurality of first connecting holes (321), and the plurality of first connecting holes (321) are arranged at intervals around the central axis of the positioning cylinder (31).

2. An automobile wheel hub for connecting the wheel hub bearing of claim 1, characterized in that: The invention comprises a rim (4), a spoke (41) and a mounting seat (5), wherein the outer end of the spoke (41) is connected to the rim (4), and the inner end of the spoke (41) is connected to the mounting seat (5); the mounting seat (5) is provided with a central hole (51) for the positioning tube (31) to be inserted and positioned, and the mounting seat (5) is provided with a second connecting hole (52), and a plurality of second connecting holes (52) are arranged at intervals around the central axis of the central hole (51), and the plurality of second connecting holes (52) are arranged corresponding to the plurality of first connecting holes (321); the first flange (32) is connected with a locking bolt (33), and the locking bolt (33) is passed through the first connecting hole (321) and the second connecting hole (52) in sequence, and a locking nut (53) is provided in the second connecting hole (52), and the locking nut (53) is sleeved on the locking bolt (33) and is threadedly connected to the locking bolt (33).

3. The automobile wheel hub according to claim 2, characterized in that: The mounting seat (5) is provided with a mounting groove (54), the mounting groove (54) is annular around the central axis of the center hole (51), the mounting groove (54) is located on the side of the second connecting hole (52) close to the first flange (32), and each of the second connecting holes (52) is connected to the mounting groove (54); a mounting ring (6) is slidably installed in the mounting groove (54), and the mounting ring (6) is provided with a through hole (61) for the locking bolt (33) to pass through; the mounting groove (54) has a first point (541 ) and a second point (542), the second point (542) being located on the side of the first point (541) close to the second connecting hole (52); a first spring (62) is provided between the mounting ring (6) and the mounting seat (5), and under normal conditions, the first spring (62) forces the mounting ring (6) to slide to the second point (542); when the locking nut (53) tightens the locking bolt (33), the mounting ring (6) slides to the first point (541), and the first spring (62) is deformed and has elastic force.

4. The automobile wheel hub according to claim 3, characterized in that: The mounting ring (6) is provided with a plurality of docking blocks (63), and the plurality of docking blocks (63) are correspondingly arranged with a plurality of locking nuts (53). Each of the docking blocks (63) is slidably installed on the mounting ring (6) so as to be able to slide along the radial direction of the mounting ring (6); the outer peripheral wall of the positioning cylinder (31) is provided with a plurality of docking grooves (311), and the plurality of docking grooves (311) are correspondingly arranged with the plurality of docking blocks (63); a second spring (631) is provided between each of the docking blocks (63) and the mounting ring (6), and when the mounting ring (6) is located at the second point position (542), the second spring (631) forces the docking block (63) to partially extend into the center hole (51) and be inserted into the corresponding docking groove (311) of the positioning cylinder (31); each of the docking blocks (63) is provided with an unlocking member, and when the locking nut (53) abuts against the mounting ring (6), the unlocking member forces the corresponding docking block (63) to disengage from the corresponding docking groove (311).

5. The automobile wheel hub according to claim 4, characterized in that: The unlocking member includes an unlocking rod (64), which is slidably installed in the mounting ring (6), and the docking block (63) is provided with an unlocking groove (632) for the unlocking rod (64) to pass through. Under normal circumstances, the second spring (631) forces one end of the unlocking rod (64) to extend to the side of the mounting ring (6) close to the locking nut (53) through the unlocking groove (632) of the docking block (63); when the mounting ring (6) is located at the second point (542) and drives the locking nut (53) to abut against the mounting ring (6), the locking nut (53) pushes the unlocking groove (632) of the docking block (63) through the unlocking rod (64) to force the docking block (63) to disengage from the corresponding docking groove (311).

6. The automobile wheel hub according to claim 4, characterized in that: The end of the positioning cylinder (31) away from the bearing seat (3) has a guide surface (312). When the positioning cylinder (31) is inserted into the center hole (51), the positioning cylinder (31) forces the docking block (63) to move out of the center hole (51) through the guide surface (312).

7. The automobile wheel hub according to claim 4, characterized in that: A connecting sleeve (55) is provided at one end of the center hole (51) away from the bearing seat (3), a finishing block (56) is provided inside the connecting sleeve (55), and a sealing component (7) is provided on the finishing block (56) for sealing the docking groove (311).

8. The automobile wheel hub according to claim 7, characterized in that: The outer peripheral wall of the positioning cylinder (31) is provided with a plurality of sliding grooves (313), and the plurality of sliding grooves (313) are arranged corresponding to the plurality of docking grooves (311). One end of each sliding groove (313) is connected to the corresponding docking groove (311), and the other end passes through the end surface of the positioning cylinder (31) close to the decorative block (56); the blocking assembly (7) comprises a connecting ring (71), a blocking strip (72), a third spring (73) and a limiting member. The connecting ring (71) is rotatably mounted on the surface of the decorative block (56) close to the positioning cylinder (31), and the blocking strip (72) is provided with a plurality of The plurality of sliding grooves (313) are arranged in correspondence with each other, one end of each of the blocking strips (72) is connected to the connecting ring (71), and the other end is passed through the corresponding sliding groove (313) and covers the corresponding docking groove (311) of the sliding groove (313); the third spring (73) is arranged between the connecting sleeve (55) and the connecting ring (71); under normal conditions, the third spring (73) forces the blocking strip (72) to disengage from the docking groove (311); the limiting member is arranged between the facing block (56) and the connecting sleeve (55) to force the blocking strip (72) to keep covering the docking groove (311).

9. The automobile wheel hub according to claim 8, characterized in that: The inner peripheral wall of the connecting sleeve (55) is provided with a movable groove, and the limiting member includes a limiting column (74), one end of the limiting column (74) is connected to the outer peripheral wall of the decorative block (56), and the other end is slidably inserted into the movable groove; the movable groove includes a moving part (551) and a rotating part (552), and the two ends of the moving part (551) are extended along the central axis of the connecting sleeve (55), and the two ends of the moving part (551) respectively form a third point (553) and a fourth point (554), and the third point (553) is located at the fourth point (554). ) is close to the side of the positioning cylinder (31); under normal conditions, the third spring (73) forces the limiting column (74) of the facing block (56) to slide to the fourth point (554), and the blocking strip (72) is separated from the docking groove (311); the rotating portion (552) is annular around the central axis of the connecting sleeve (55) and is connected to the third point (553). When the limiting column (74) is driven to slide to the third point (553) and rotate into the rotating portion (552), the end of the blocking strip (72) away from the connecting ring (71) covers the docking groove (311).

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