CN220973821U - Wheel core and wheel rim assembly of equation race - Google Patents

Abstract

The application relates to an equation racing car wheel core and a wheel rim assembly, wherein the equation racing car wheel core comprises: the wheel spindle is provided with a bearing installation part at one end and a hub installation part at the other end, and a first baffle ring and a second baffle ring are arranged on the peripheral wall of the wheel spindle; the bearing nut piece is used for being abutted to one end of the bearing, the first baffle ring is used for being abutted to the other end of the bearing, and the rotating direction of the bearing nut piece during assembly is opposite to the forward rotating direction of the wheel core shaft; and one end of the wheel spindle is provided with a second external thread in threaded connection with the wheel spindle, the wheel spindle is used for being abutted to one end of the wheel hub, the second baffle ring is used for being abutted to the other end of the wheel hub, and the rotating direction of the wheel spindle is opposite to the forward rotating direction of the wheel spindle during assembly of the wheel spindle. The application has the effect of convenient disassembly and assembly of the wheel core of the equation racing wheel and the bearing thereon.

Description

Wheel core and wheel rim assembly of equation race

Technical Field

The utility model relates to the technical field of wheel assemblies, in particular to an equation racing wheel core and wheel rim assembly.

Background

The wheel core of the formula car is a part for installing wheels and brake discs, and the rear wheel core also needs to transmit the torque output by the engine to the wheels through half shafts, so the rear wheel core also integrates the structure of a ball cage.

In the prior art, equation racing car wheel core includes axis body, retaining member and three bolt, the one end of axis body is equipped with bearing installation department, the middle part of axis body is equipped with the backing ring, the retaining member is including supporting tight cover and go-between, it locates bearing installation department and is used for the cooperation backing ring to press from both sides tight bearing inner circle to support tight cover, the go-between with support tight one end integrated into one piece of cover and butt on the terminal surface of axis body, three bolt pass behind the go-between with the screw hole threaded connection of axis body terminal surface, with the go-between be fixed in on the terminal surface of axis body one end terminal surface, make support tight cover and backing ring clamp bearing inner circle, realize the fixed of bearing inner circle.

However, when the bearing is fixed, the locking piece is sleeved and installed at one end of the shaft body, and then three bolts are sequentially installed at one end of the shaft body, so that the locking piece is driven to be matched with the baffle ring to clamp the fixed bearing; when dismantling the bearing, need pull down three bolt in proper order, just can pull down the bearing, lead to the bearing dismouting on the equation race axletree body loaded down with trivial details.

Disclosure of utility model

The application solves the problem that the bearing on the wheel core of the equation racing wheel is complicated to assemble and disassemble.

In order to solve the above problems, in a first aspect, the present application provides an equation racing car wheel core, which adopts the following technical scheme:

an equation racing car wheel core comprising:

The wheel comprises a wheel core shaft, a first baffle ring and a second baffle ring, wherein one end of the wheel core shaft is provided with a bearing installation part, the other end of the wheel core shaft is provided with a hub installation part, and the peripheral wall of the wheel core shaft is provided with the first baffle ring and the second baffle ring;

The bearing nut piece is used for abutting against one end of the bearing, the first baffle ring is used for abutting against the other end of the bearing, and the rotating direction of the bearing nut piece during assembly is opposite to the forward rotating direction of the wheel spindle; and

The wheel hub nut piece, the one end of wheel dabber be equipped with wheel hub nut piece threaded connection's second external screw thread, wheel hub nut piece is used for the butt in the one end of wheel hub, the second baffle ring is used for the butt in the other end of wheel hub, the direction of rotation when wheel hub nut piece is assembled with the forward direction of rotation of wheel dabber is opposite.

Through adopting above-mentioned structure, press from both sides tight fixed bearing through bearing nut spare cooperation first fender ring, only need screw the bearing nut spare when installing the bearing, only need pull down the bearing nut spare when dismantling the bearing for the epaxial bearing easy dismounting of wheel. The direction of rotation of the bearing nut piece during assembly is opposite to the forward rotation direction of the wheel spindle, so that the bearing nut piece is self-tightened in the normal running process of the racing car, and then the bearing nut piece and the first baffle ring are matched to keep clamping and fixing the bearing, and the bearing is kept stable in the running process of the racing car.

Optionally, the outer peripheral wall of the bearing nut member is provided with a plurality of protrusions uniformly distributed along the circumferential direction.

Optionally, one end of the hub nut member facing the second stop ring is provided with a guide surface, and the diameter of the guide surface gradually increases from one end of the wheel spindle to the other end.

Optionally, be equipped with the connecting plate on the wheel dabber periphery wall, the connecting plate is located first keep off between the ring with the second keeps off the ring and be close to the second keeps off the ring setting, be equipped with a plurality of edges on the connecting plate the circumference evenly distributed's of wheel dabber reference column, the reference column orientation hub nut spare sets up.

Optionally, be equipped with the brake block connection pad on the periphery wall of wheel dabber, the brake block connection pad is located first fender ring with between the second fender ring, the periphery wall of brake block connection pad has the external connection cambered surface, be equipped with a plurality of edges on the external connection cambered surface the first spread groove of the circumference evenly distributed of wheel dabber, first spread groove is followed the axial of wheel dabber runs through the both ends face of brake block connection pad.

Optionally, the number of the bearing installation parts is two, and the two bearing installation parts are arranged at intervals along the axial direction.

In a second aspect, the present application provides an equation racing car wheel core, which adopts the following technical scheme:

An equation racing rim assembly, comprising:

The equation wheel core as described above;

Bearings are sleeved and mounted on the two bearing mounting parts in a one-to-one correspondence manner;

the upright post is provided with a bearing mounting hole, and is sleeved and mounted on the outer side of the bearing;

The inner peripheral wall of the brake disc is provided with an inner connecting cambered surface which is abutted with the outer connecting cambered surface, the inner connecting cambered surface is provided with a plurality of second connecting grooves which are uniformly distributed along the circumferential direction, the second connecting grooves penetrate through the two end surfaces of the brake disc along the axial direction of the brake disc, and the second connecting grooves and the first connecting grooves are spliced to form perforations; and

And the connecting structure is arranged in the through hole in a penetrating way, and two ends of the connecting structure are respectively abutted against two ends of the brake pad connecting disc and the brake disc.

Optionally, the connecting structure includes:

the connecting sleeve is arranged in the perforation in a penetrating way;

The baffle ring is integrally formed at one end of the connecting sleeve and is abutted against one end of the brake plate connecting disc and one end of the brake disc; and

And the elastic check ring is arranged at the other end of the connecting sleeve and is abutted against the other ends of the brake plate connecting disc and the brake disc.

Optionally, at least one group of lightening holes is arranged on the brake disc, and each group of lightening holes comprises a plurality of lightening holes uniformly distributed along the circumferential direction of the brake disc.

Optionally, two limiting rings are arranged on the inner peripheral wall of the bearing mounting hole, the two limiting rings are arranged between the two bearings, and the two limiting rings are respectively abutted against the outer ring end surfaces of the two bearings.

Drawings

FIG. 1 is a schematic diagram of an equation wheel core according to embodiment 1 of the present application;

FIG. 2 is a cross-sectional view taken along the direction A-A in FIG. 1;

FIG. 3 is a schematic diagram of an edge assembly of an equation racing car according to the embodiment 2 of the present application;

FIG. 4 is a cross-sectional view taken along the direction B-B in FIG. 3;

fig. 5 is an exploded view showing a brake disc, a brake pad land and a connection structure according to embodiment 2 of the present application.

Reference numerals illustrate:

10. A wheel spindle; 11. a bearing mounting portion; 12. a first baffle ring; 13. a first external thread; 14. a hub mounting portion; 15. a second baffle ring; 16. a second external thread; 17. a connecting plate; 171. positioning columns; 18. a brake pad connection pad; 181. the outer part is connected with the cambered surface; 182. a first connection groove; 20. a bearing nut member; 21. a bump; 30. a hub nut member; 31. a guide surface; 40. a bearing; 50. a column; 51. bearing mounting holes; 52. a limiting ring; 60. a brake disc; 61. connecting the inner cambered surfaces; 62. a second connecting groove; 63. perforating; 64. a lightening hole; 65. an avoidance groove; 70. a connection structure; 71. connecting sleeves; 711. a ring groove; 72. a baffle ring; 73. and (5) a circlip.

Detailed Description

In describing embodiments of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; may be mechanically coupled, directly coupled, or indirectly coupled via an intermediate medium. The specific meaning of the above terms in embodiments of the present application will be understood in detail by those of ordinary skill in the art.

In embodiments of the application, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In order that the above objects, features and advantages of the present application will be readily understood, a more particular description of the application will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

Example 1

The embodiment of the application discloses an equation racing car wheel core. Referring to fig. 1 and 2, the equation race wheel core includes a wheel spindle 10 and a bearing nut member 20.

The wheel core shaft 10 is arranged in a sleeve shape, so that the mass of the wheel core is reduced, and the unsprung mass of the racing car is further reduced. One end of the wheel spindle 10 is provided with bearing mounting portions 11, the bearing mounting portions 11 are used for mounting bearings 40 so as to rotationally connect the wheel spindle 10 to the upright posts 50, the number of the bearing mounting portions 11 is two, the two bearing mounting portions 11 are axially arranged at intervals, and the diameter of the wheel spindle 10 between the two bearing mounting portions 11 is smaller than that of the bearing mounting portions 11 so as to facilitate mounting of the bearings 40 on the bearing mounting portions 11, and meanwhile, the weight of the wheel spindle 10 is reduced.

The outer peripheral wall of the wheel spindle 10 is integrally formed with a first stopper ring 12, and the first stopper ring 12 is provided toward the bearing mounting portion 11. One end of the wheel spindle 10 is provided with a first external thread 13, a bearing nut member 20 is in threaded connection with the first external thread 13, two bearing mounting portions 11 are located between the bearing 40 nuts and the first baffle ring 12, the two bearings 40 are kept at a fixed distance through the upright posts 50, and the bearing nut member 20 is matched with the first baffle ring 12 to fasten the inner ring clamps of the two bearings 40 on the wheel spindle 10. When the wheel spindle 10 rotates in the forward direction, the racing car moves forward, and the bearing nut member 20 is assembled in the opposite direction to the forward direction of the wheel spindle 10. When the racing car starts, the bearing nut piece 20 keeps static trend due to inertia, namely, the bearing nut piece 20 has rotating trend along the assembly direction relative to the wheel spindle 10, so that the self-tightening of the bearing nut piece 20 is realized, the bearing nut piece 20 is matched with the first baffle ring 12 to clamp the bearing 40, the bearing 40 on the wheel spindle 10 is kept stable, and the safety in the running process of the racing car is improved. Meanwhile, compared with the prior art that three bolts are required to be disassembled in sequence when the bearing 40 is disassembled, the bearing 40 on the wheel spindle 10 can be disassembled only by disassembling the bearing nut piece 20, so that the disassembly is convenient, and the assembly efficiency of the wheel spindle 10 and the upright post 50 is improved.

The outer peripheral wall of the bearing nut piece 20 is integrally formed with a plurality of protruding blocks 21, and the protruding blocks 21 are arranged at intervals along the circumferential direction of the bearing nut piece 20 so as to increase friction between a tool and the bearing nut piece 20 and facilitate the use of the tool to disassemble and assemble the bearing nut piece 20.

Further, the plurality of projections 21 are uniformly distributed along the circumferential direction of the bearing nut member 20 to cooperate with the wheel speed sensor to generate rectangular waves for detecting the wheel speed of the racing car.

The other end of the wheel spindle 10 is provided with a hub mounting portion 14, and the hub mounting portion 14 is used for sleeving and mounting a hub. The outer peripheral wall of the wheel spindle 10 is integrally formed with a second stopper ring 15, the second stopper ring 15 is disposed toward the hub mounting portion 14, and the second stopper ring 15 is disposed near the hub mounting portion 14. The other end of the wheel spindle 10 is provided with a second external thread 16, the wheel hub nut member 30 is in threaded connection with the second external thread 16, and the wheel hub nut member 30 and the second baffle ring 15 are respectively abutted against two ends of the wheel hub so as to fixedly mount the wheel hub on the wheel spindle 10, so that the wheel hub synchronously rotates along with the wheel spindle 10. The direction of rotation of the hub nut member 30 during assembly is opposite to the forward direction of rotation of the wheel spindle 10, and when the racing car is started, the hub nut member 30 keeps static trend due to inertia, namely, the hub nut member 30 has a direction of rotation along the assembly relative to the wheel spindle 10, so that the self-tightening of the hub nut member 30 is realized, the hub nut member 30 is matched with the second baffle ring 15 to clamp the hub, the wheel spindle 10 and the hub are kept consistent, and the safety in the racing car driving process is improved.

The outer peripheral wall of the wheel spindle 10 is integrally formed with a connecting plate 17, the connecting plate 17 is located between the first baffle ring 12 and the second baffle ring 15, the connecting plate 17 is arranged close to the second baffle ring 15, the axial projection of the connecting plate 17 along the wheel spindle 10 is a central symmetrical graph, the axis of the wheel spindle 10 passes through the symmetrical center of the connecting plate 17, the connecting plate 17 can be a circular plate or a four-angle plate, in the embodiment, the connecting plate 17 is described by taking the four-angle plate as an example, and four angles of the connecting plate 17 are uniformly distributed along the circumferential direction of the wheel spindle 10. Four positioning columns 171 are integrally formed on the connecting plate 17, the four positioning columns 171 are arranged in one-to-one correspondence with the four corners of the connecting plate 17, the positioning columns 171 are arranged towards the hub nut member 30 along the axial direction of the hub spindle 10, and the positioning columns 171 are used for being matched and positioned with positioning holes of the hub when the hub spindle 10 is assembled with the hub so as to facilitate the assembly of the hub on the hub spindle 10, and simultaneously enable the hub and the hub spindle 10 to synchronously rotate.

The end of the hub nut member 30 facing the second stop ring 15 is provided with a guide surface 31, the guide surface 31 being a truncated cone surface, the diameter of the guide surface 31 gradually decreasing in the direction from one end to the other end of the wheel spindle 10. When the hub is assembled with the wheel spindle 10, the hub sleeve is firstly arranged on the hub mounting part 14, the positioning column 171 is correspondingly inserted into the positioning hole of the hub, one end of the hub is abutted with the second baffle ring 15, the hub nut 30 is arranged, the guide surface 31 is abutted with the inner hole wall of the hub in the process of screwing the hub nut 30 to drive the hub and the wheel spindle 10 to coaxially arrange, and the coaxiality of the hub and the wheel spindle 10 is improved. In addition, the guide surface 31 increases the contact area between the hub nut member 30 and the hub compared to the end surface provided in a plane, so that the hub is less likely to shake.

The outer peripheral wall of the wheel spindle 10 is integrally formed with a brake plate connecting disc 18, the brake plate connecting disc 18 is located between the first baffle ring 12 and the second baffle ring 15, the brake plate connecting disc 18 is arranged close to the first baffle ring 12, the outer peripheral wall of the brake plate connecting disc 18 is provided with a plurality of outer connecting cambered surfaces 181, the outer connecting cambered surfaces 181 can be uniformly distributed in the circumferential direction and can also be a continuous torus, and in the embodiment, the outer connecting cambered surfaces 181 are a plurality of outer connecting cambered surfaces 181 and are uniformly distributed in the circumferential direction for example for introduction. The outer connection cambered surface 181 is adapted to abut with the inner connection cambered surface 61 of the brake disc 60 so that the brake disc 60 is fixed radially against the wheel spindle 10 when the brake disc 60 is mounted on the brake plate connecting disc 18. The outer connection cambered surface 181 is provided with a first connection groove 182, the first connection groove 182 penetrates through two end faces of the brake disc 60 along the axial direction of the wheel spindle 10, the first connection groove 182 and the second connection groove 62 of the brake disc 60 are spliced into a perforation 63, and the perforation 63 is a circular hole so as to conveniently fix the brake disc 60 and the brake plate connecting disc 18 together.

Compared with the prior art, the inner ring of the bearing 40 is fixedly arranged on the wheel spindle 10 by matching the bearing nut piece 20 with the first baffle ring 12, the bearing 40 can be disassembled and assembled only by disassembling the bearing nut piece 20, the disassembly and the assembly are convenient, and the assembly efficiency of the wheel spindle 10 and the upright column 50 is improved. The direction of rotation of the bearing nut member 20 during assembly is opposite to the direction of forward rotation of the wheel spindle 10, so that the bearing nut member 20 is self-tightened during normal running of the racing car, and further the bearing 40 on the wheel spindle 10 is kept stable, and safety during running of the racing car is improved.

Example 2

The embodiment of the application discloses an equation racing car wheel rim assembly. Referring to fig. 3 and 4, the equation wheel rim assembly includes the equation wheel core, the bearing 40, the column 50, the brake disc 60, and the connection structure 70 as described in embodiment 1.

The number of the bearings 40 is two, the two bearings 40 are sleeved and mounted on the two bearing mounting portions 11 in a one-to-one correspondence manner, and the inner diameter of each bearing 40 is matched with the outer diameter of each bearing mounting portion 11. The upright post 50 is provided with a bearing mounting hole 51, the inner diameter of the bearing mounting hole 51 is matched with the outer diameter of the bearing 40, the two bearings 40 are respectively and correspondingly mounted at two ends of the bearing mounting hole 51, the end face of the bearing 40 facing the outer side of the bearing mounting hole 51 is an outer end face, the end face of the bearing 40 facing the inner side of the bearing mounting hole 51 is an inner end face, and the outer end faces of the two bearings 40 are respectively flush with two end faces of the upright post 50. Two limiting rings 52 are integrally formed on the inner peripheral wall of the bearing mounting hole 51, the two limiting rings 52 are located between the two bearings 40, and the two limiting rings 52 are respectively abutted with the inner end surfaces of the outer rings of the two bearings 40, so that the two bearings 40 keep a fixed axial distance.

During installation, two bearings 40 are firstly installed at two ends of a bearing installation hole 51 respectively, inner end surfaces of the two bearings 40 are respectively abutted against two limiting rings 52, then an upright post 50 is sleeved on a wheel mandrel 10, so that the two bearings 40 are installed on a bearing installation part 11 in a one-to-one correspondence manner, then a bearing nut piece 20 is connected onto the wheel mandrel 10 in a threaded manner, the bearing nut piece 20, the first baffle ring 12 and the two limiting rings 52 are matched and clamp the two bearings 40, so that the upright post 50 is assembled on the wheel mandrel 10, and the wheel mandrel 10 is rotationally connected with the upright post 50.

Referring to fig. 4 and 5, the brake disc 60 is in a circular ring shape, a plurality of avoidance grooves 65 are formed in the inner peripheral wall of the brake disc 60, the plurality of avoidance grooves 65 are uniformly distributed along the circumferential direction of the brake disc 60, the avoidance grooves 65 penetrate through two end faces of the brake disc 60 along the axial direction of the brake disc 60, the avoidance grooves 65 are used for avoiding four corners of the connecting plate 17, so that the brake disc 60 can be sleeved from any end of the wheel spindle 10, and the brake disc 60 is more convenient to install. The brake disc 60 is provided with at least one set of lightening holes 64, and each set of lightening holes 64 comprises a plurality of lightening holes 64 uniformly distributed along the circumferential direction of the brake disc 60 so as to lighten the mass of the brake disc 60 and simultaneously make centrifugal forces cancel each other when the brake disc 60 rotates. The inner circumferential wall of the brake disc 60 has an inner connection cambered surface 61 that correspondingly abuts against the outer connection cambered surface 181 so that the brake disc 60 is fixed radially relative to the wheel spindle 10 when the brake disc 60 is mounted on the brake plate connecting disc 18. The inner connecting cambered surface 61 is provided with a second connecting groove 62, the second connecting groove 62 penetrates through two end surfaces of the brake disc 60 along the axial direction of the brake disc 60, the second connecting groove 62 and the first connecting groove 182 are spliced into a through hole 63, and the through hole 63 is circularly arranged.

The connecting structure 70 is disposed in the through hole 63 and abuts against two ends of the brake pad connecting disc 18 and the brake disc 60, and the connecting structure 70 includes a connecting sleeve 71, a baffle ring 72 and a circlip 73. Specifically, the connecting sleeve 71 is disposed in the through hole 63, and the outer diameter of the connecting sleeve 71 is adapted to the inner diameter of the through hole 63, so that the brake disc 60 is not easy to move circumferentially relative to the brake disc 60 mounting plate, and the braking performance of the racing car is improved. The baffle ring 72 is integrally formed at one end of the connecting sleeve 71, and the baffle ring 72 abuts against one end of the brake disc 60 and the brake disc 60 mounting plate. The outer peripheral wall of the connecting sleeve 71 is provided with a ring groove 711, a part of the elastic retainer 73 is embedded in the ring groove 711, and the part of the elastic retainer 73 exposed out of the ring groove 711 and the other end of the brake disc 60 and the brake disc 60 mounting plate are matched with the baffle ring 72 to clamp the brake disc 60 and the brake disc 60 mounting plate, so that the brake disc 60 is not easy to slide along the axial direction relative to the brake disc 60 mounting part, and the brake disc 60 mounting plate are fixed together.

In addition, the brake disc 60 and the brake disc 60 mounting plate can be fixed through bolts and nuts, namely, the studs of the bolts are penetrated in the through holes 63 and are matched with the diameters of the through holes 63, so that the brake disc 60 is not easy to move along the circumferential direction relative to the brake disc 60 mounting plate, and the brake performance of the racing car is improved; the nuts are connected with the studs of the bolts in a threaded manner, and the nuts are matched with the bolts to clamp the brake disc 60 and two ends of the brake disc 60 mounting plate.

When in installation, the brake disc 60 is sleeved on the outer side of the brake disc 60 mounting plate, so that the external arc surface and the internal arc surface are mutually abutted, and the first connecting groove 182 and the second connecting groove 62 are spliced into a perforation 63; the connecting sleeve 71 is penetrated into the perforation 63, so that the baffle ring 72 is abutted with the brake disc 60 and one end of the brake disc 60 mounting plate; finally, the circlip 73 is installed in the annular groove 711, and the circlip 73 and the baffle ring 72 are matched to clamp the brake disc 60 and the brake disc 60 mounting plate, so that the brake disc 60 and the brake disc 60 mounting plate are fixed together.

Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the invention.

Claims (10)

1. An equation wheel core, comprising:

A wheel core shaft (10), one end of which is provided with a bearing mounting part (11) and the other end of which is provided with a wheel hub mounting part (14), and the outer peripheral wall of the wheel core shaft (10) is provided with a first baffle ring (12) and a second baffle ring (15);

A bearing nut member (20), wherein one end of the wheel spindle (10) is provided with a first external thread (13) in threaded connection with the bearing nut member (20), the bearing nut member (20) is used for abutting against one end of a bearing (40), the first baffle ring (12) is used for abutting against the other end of the bearing (40), and the rotation direction of the bearing nut member (20) during assembly is opposite to the forward rotation direction of the wheel spindle (10); and

The wheel hub nut piece (30), the one end of wheel dabber (10) be equipped with wheel hub nut piece (30) threaded connection's second external screw thread (16), wheel hub nut piece (30) are used for the butt in the one end of wheel hub, second baffle ring (15) are used for the butt in the other end of wheel hub, the direction of rotation when wheel hub nut piece (30) assembly is opposite with the direction of corotation of wheel dabber (10).

2. The equation wheel core of claim 1, wherein: the outer peripheral wall of the bearing nut member (20) is provided with a plurality of projections (21) uniformly distributed in the circumferential direction.

3. The equation wheel core of claim 1, wherein: one end of the hub nut member (30) facing the second baffle ring (15) is provided with a guide surface (31), and the diameter of the guide surface (31) gradually increases from one end to the other end of the wheel spindle (10).

4. The equation wheel core of claim 1, wherein: the wheel spindle (10) is provided with a connecting plate (17) on the peripheral wall, the connecting plate (17) is arranged between the first baffle ring (12) and the second baffle ring (15) and is close to the second baffle ring (15), the connecting plate (17) is provided with a plurality of positioning columns (171) which are uniformly distributed along the circumferential direction of the wheel spindle (10), and the positioning columns (171) are arranged towards the hub nut piece (30).

5. The equation wheel core of any one of claims 1-4, wherein: be equipped with brake pad connection pad (18) on the periphery wall of wheel dabber (10), brake pad connection pad (18) are located first backing ring (12) with between second backing ring (15), the periphery wall of brake pad connection pad (18) has outer connection cambered surface (181), be equipped with a plurality of edges on outer connection cambered surface (181) first spread groove (182) of the circumference evenly distributed of wheel dabber (10), first spread groove (182) are followed the axial of wheel dabber (10) runs through the both ends face of brake pad connection pad (18).

6. The equation wheel core of claim 5, wherein: the number of the bearing mounting parts (11) is two, and the two bearing mounting parts (11) are arranged at intervals along the axial direction.

7. An equation racing rim assembly, comprising:

The equation wheel core of any one of claims 6;

Bearings (40) are sleeved and mounted on the two bearing mounting parts (11) in a one-to-one correspondence manner;

The upright post (50) is provided with a bearing mounting hole (51), and the upright post (50) is sleeved and mounted on the outer side of the bearing (40);

The inner peripheral wall of the brake disc (60) is provided with an inner connecting cambered surface (61) which is abutted against the outer connecting cambered surface (181), a plurality of second connecting grooves (62) which are uniformly distributed along the circumferential direction are formed in the inner connecting cambered surface (61), the second connecting grooves (62) penetrate through two end surfaces of the brake disc (60) along the axial direction of the brake disc (60), and the second connecting grooves (62) and the first connecting grooves (182) are spliced to form perforations (63); and

And a connecting structure (70) which is arranged in the through hole (63) in a penetrating way and the two ends of which are respectively abutted against the two ends of the brake plate connecting disc (18) and the brake disc (60).

8. The racing rim assembly as set forth in claim 7, wherein the connecting structure (70) includes:

the connecting sleeve (71) is arranged in the perforation (63) in a penetrating way;

A baffle ring (72) integrally formed at one end of the connecting sleeve (71) and abutted against one ends of the brake plate connecting disc (18) and the brake disc (60); and

And a circlip (73) which is arranged at the other end of the connecting sleeve (71) and is abutted against the other ends of the brake plate connecting disc (18) and the brake disc (60).

9. The racing rim assembly as set forth in claim 7, wherein the brake disc (60) is provided with at least one set of lightening holes (64), each set of lightening holes (64) including a plurality of lightening holes (64) uniformly distributed along a circumferential direction of the brake disc (60).

10. The equation racing rim assembly set forth in claim 7, wherein: two limiting rings (52) are arranged on the inner peripheral wall of the bearing mounting hole (51), the two limiting rings (52) are arranged between the two bearings (40), and the two limiting rings (52) are respectively abutted against the outer ring end faces of the two bearings (40).