Hub unit with brake structure

Abstract

The utility model relates to a hub unit with a brake structure, which belongs to the technical field of hub bearings and comprises a driving shaft, a hub bearing assembly is arranged at the front end of the driving shaft, the hub bearing assembly is fixedly connected with the driving shaft in a limiting and inserting manner, and a brake component is arranged on the driving shaft and fixedly connected with the driving shaft in a sliding and nesting manner. The hub bearing assembly comprises a hub flange plate, a spline hole connected with the driving shaft in an inserted mode is formed in the hub flange plate, a flange outer ring connected with the hub flange plate in a sleeved mode is arranged on the hub flange plate, and an inner ring fixedly connected with the hub flange plate in a clamped and embedded mode in a sleeved mode is arranged between the flange outer ring and the hub flange plate. The brake has the characteristics of simple structure, good brake stability and long service life. The problem of pause during braking of the automobile hub is solved. And the stability and the safety of vehicle braking are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel hub bearings, in particular to a wheel hub unit with a braking structure. Background Art

[0002] At present, the vehicle's brake system is only installed in the wheel hub, and the wheel hub unit is frictionally braked. But when the brake system fails, how to timely assist in controlling the vehicle speed to avoid the potential safety hazards of vehicle brake loss of control and rollover. At the same time, when the car wheel hub is braking, there is a phenomenon of brake frustration due to the fluctuation of oil pressure. Summary of the invention

[0003] The utility model mainly solves the deficiencies in the prior art and provides a wheel hub unit with a braking structure, which has the characteristics of simple structure, good braking stability and long service life. It solves the problem of setbacks in the wheel hub of an automobile during braking and improves the stability and safety of vehicle braking.

[0004] The above technical problems of the utility model are mainly solved by the following technical solutions:

[0005] A wheel hub unit with a brake structure comprises a drive shaft, the front end of the drive shaft is provided with a wheel hub bearing assembly which is fixedly connected with the drive shaft by inserting and locking, the drive shaft is provided with a brake assembly which is fixedly connected with the drive shaft by sliding nesting. The wheel hub bearing assembly comprises a wheel hub flange, the wheel hub flange is provided with a spline hole which is inserted with the drive shaft, the wheel hub flange is provided with a flange outer ring which is sleeved with the wheel hub flange, and an inner ring which is fixedly connected with the wheel hub flange by inserting and locking is provided between the flange outer ring and the wheel hub flange.

[0006] Preferably, a retaining frame is provided between both sides of the inner ring and the outer ring of the flange, the retaining frame is provided with a plurality of steel balls which are slidably engaged with the retaining frame, and the outer side of the retaining frame is provided with a multi-lip skeleton sealing ring which is respectively nested and fixed with the outer ring and the inner ring of the flange.

[0007] Preferably, the brake assembly comprises a shaft sleeve and a brake piston, and a brake friction plate is provided between the shaft sleeve and the brake piston.

[0008] Preferably, the shaft sleeve is provided with a plurality of positioning pins which are inserted and fixed with the brake friction pad in a limited position, the outer side of the brake friction pad is provided with a protective cover shell which is sleeved with the shaft sleeve, a pressure cover is provided between the brake piston and the protective cover shell, a gear ring shaft sleeve is provided between the pressure cover and the brake piston, and a disc spring which is inserted with the pressure cover is provided between the front end of the gear ring shaft sleeve and the brake piston.

[0009] Preferably, a clamping ring is provided between the outer ring of the brake piston and the inner hole of the gear ring sleeve, and a stop ring is provided at the rear end of the outer ring of the brake piston for movable limiting contact with the clamping ring. The stop ring is fixedly connected to the brake piston in a slot-type insert-nested manner.

[0010] Preferably, the clamping ring sleeve is provided with a plurality of steel balls distributed in an annular shape and through-connected with the clamping ring sleeve, and the gear ring sleeve is provided with a ring groove. When the clamping ring sleeve is in the process of braking and resetting the disc spring and the brake piston, the ring grooves on the brake piston and the gear ring sleeve are stopped respectively.

[0011] Preferably, a clamping ring is provided between the gland and the protective cover shell, which is embedded in the inner wall of the protective cover shell and sleeved with the outer ring of the brake piston.

[0012] Preferably, the drive shaft is fixedly connected to the brake piston by a key-type nesting connection, a bearing is provided between the drive shaft and the sleeve, and a pair of bearing retaining rings embedded with the drive shaft are provided at the rear end of the bearing.

[0013] Preferably, the wheel hub flange is provided with a plurality of wheel hub bolts plugged into the wheel hub flange.

[0014] The utility model can achieve the following effects:

[0015] The utility model provides a wheel hub unit with a braking structure, which has the characteristics of simple structure, good braking stability and long service life compared with the prior art, solves the problem of setbacks in the wheel hub of an automobile during braking, and improves the stability and safety of vehicle braking. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a structural schematic diagram of the wheel hub bearing assembly in the utility model.

[0018] Figure 3 It is a structural schematic diagram of the brake assembly in the utility model.

[0019] In the figure: brake assembly 1, drive shaft 2, wheel hub bearing assembly 3, flange outer ring 4, wheel hub flange 5, wheel hub bolt 6, spline hole 7, inner ring 8, multi-lip skeleton seal 9, steel ball 10, retainer 11, sleeve 12, locating pin 13, protective cover shell 14, brake friction pad 15, clamping ring 16, disc spring 17, pressure cover 18, gear ring sleeve 19, clamping ring sleeve 20, brake piston 21, stop retaining ring 22, steel ball 23, ring groove 24, bearing 25, bearing retaining ring 26. DETAILED DESCRIPTION

[0020] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0021] Example: Figure 1 , Figure 2 and Figure 3 As shown, a hub unit with a brake structure includes a drive shaft 2, a hub bearing assembly 3 is provided at the front end of the drive shaft 2 and is fixedly connected with the drive shaft 2 by inserting and inserting, and a brake assembly 1 is provided on the drive shaft 2 and is fixedly connected with the drive shaft 2 by sliding nesting. The hub bearing assembly 3 includes a hub flange 5, and the hub flange 5 is provided with 6 hub bolts 6 plugged with the hub flange 5. The hub flange 5 is provided with a spline hole 7 plugged with the drive shaft 2, and the hub flange 5 is provided with a flange outer ring 4 sleeved with the hub flange 5, and an inner ring 8 is provided between the flange outer ring 4 and the hub flange 5 and is fixedly connected with the hub flange 5 by inserting and inserting. A retainer 11 is provided between the two sides of the inner ring 8 and the flange outer ring 4, and the retainer 11 is provided with 8 steel balls 10 connected with the retainer 11 by sliding nesting, and the outer side of the retainer 11 is provided with a multi-lip skeleton sealing ring 9 respectively nested and connected with the flange outer ring 4 and the inner ring 8.

[0022] The brake assembly 1 includes a sleeve 12 and a brake piston 21. A brake friction pad 15 is provided between the sleeve 12 and the brake piston 21. The drive shaft 2 and the brake piston 21 are connected and fixed in a flat key-type nesting manner. A bearing 25 is provided between the drive shaft 2 and the sleeve 12. A pair of bearing clamps 26 are provided at the rear end of the bearing 25 and are clamped with the drive shaft 2. Six positioning pins 13 are provided on the sleeve 12 and are connected and fixed in an interlocking limited manner with the brake friction pad 15. A protective cover 14 is provided on the outer side of the brake friction pad 15 and is sleeved with the sleeve 12. A pressure cap 18 is provided between the brake piston 21 and the protective cover 14. A clamping ring 16 is provided between the pressure cap 18 and the protective cover 14 and is inserted into the inner wall of the protective cover 14 and sleeved with the outer ring of the brake piston 21. A gear ring sleeve 19 is provided between the pressure cap 18 and the brake piston 21. A disc spring 17 is provided between the front end of the gear ring sleeve 19 and the brake piston 21 and is inserted into the pressure cap 18. A clamping ring 20 is provided between the outer ring of the brake piston 21 and the inner hole of the gear ring sleeve 19. A stop ring 22 is provided at the rear end of the outer ring of the brake piston 21, which is in movable limited contact with the clamping ring 20. The stop ring 22 is fixedly connected with the brake piston 11 in a slot-type insertion and insertion manner. Six steel balls 23 are arranged in an annular distribution and are in a through-type sleeve with the clamping ring 20. An annular groove 24 is provided in the gear ring sleeve 19. When the clamping ring 20 is in the process of brake reset of the disc spring 17 and the brake piston 21, the annular groove 24 on the brake piston 21 and the gear ring sleeve 19 are stopped respectively.

[0023] In summary, the wheel hub unit with a braking structure has the characteristics of simple structure, good braking stability and long service life, solves the problem of setbacks in the braking of the automobile wheel hub, and improves the stability and safety of vehicle braking.

[0024] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

[0025] In summary, the above description is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are included in the patent scope of the present invention.

Claims

1. A wheel hub unit with a braking structure, characterized in that: The invention comprises a drive shaft (2), the front end of which is provided with a wheel hub bearing assembly (3) which is fixedly connected to the drive shaft (2) by inserting and locking, and the drive shaft (2) is provided with a brake assembly (1) which is fixedly connected to the drive shaft (2) by sliding insertion. The wheel hub bearing assembly (3) comprises a wheel hub flange (5), the wheel hub flange (5) is provided with a spline hole (7) which is inserted into the drive shaft (2), the wheel hub flange (5) is provided with a flange outer ring (4) which is sleeved with the wheel hub flange (5), and an inner ring (8) which is sleeved and fixedly connected to the wheel hub flange (5) by inserting and locking is provided between the flange outer ring (4) and the wheel hub flange (5).

2. A wheel hub unit with a braking structure according to claim 1, characterized in that: A retaining frame (11) is provided between both sides of the inner ring (8) and the flange outer ring (4), and a plurality of steel balls (10) are provided on the retaining frame (11) and are slidably engaged with the retaining frame (11). The outer side of the retaining frame (11) is provided with a multi-lip skeleton sealing ring (9) which is respectively nested and connected to the flange outer ring (4) and the inner ring (8).

3. The wheel hub unit with a braking structure according to claim 1, characterized in that: The brake assembly (1) comprises a shaft sleeve (12) and a brake piston (21), and a brake friction plate (15) is provided between the shaft sleeve (12) and the brake piston (21).

4. The wheel hub unit with a braking structure according to claim 3, characterized in that: The shaft sleeve (12) is provided with a plurality of positioning pins (13) which are inserted and fixedly connected with the brake friction plate (15); the outer side of the brake friction plate (15) is provided with a protective cover shell (14) which is sleeved with the shaft sleeve (12); a pressure cover (18) is provided between the brake piston (21) and the protective cover shell (14); a gear ring shaft sleeve (19) is provided between the pressure cover (18) and the brake piston (21); and a disc spring (17) which is inserted with the pressure cover (18) is provided between the front end of the gear ring shaft sleeve (19) and the brake piston (21).

5. The wheel hub unit with a braking structure according to claim 4, characterized in that: A clamping ring sleeve (20) is provided between the outer ring of the brake piston (21) and the inner hole of the gear ring sleeve (19), and a stop ring (22) is provided at the rear end of the outer ring of the brake piston (21) for movable limited contact with the clamping ring sleeve (20). The stop ring (22) is fixedly connected to the brake piston (21) in a slot-type insertion manner.

6. The wheel hub unit with a braking structure according to claim 5, characterized in that: The clamping ring sleeve (20) is provided with a plurality of steel balls (23) which are distributed in an annular shape and are connected to the clamping ring sleeve (20) in a through-type sleeve manner. The gear ring sleeve (19) is provided with a ring retaining groove (24). When the clamping ring sleeve (20) is in the process of braking and resetting the disc spring (17) and the brake piston (21), the ring retaining groove (24) on the brake piston (21) and the gear ring sleeve (19) is stopped respectively.

7. The wheel hub unit with a braking structure according to claim 4, characterized in that: A clamping ring (16) is provided between the pressure cover (18) and the protective cover shell (14), which is inserted into the inner wall of the protective cover shell (14) and sleeved with the outer ring of the brake piston (21).

8. The wheel hub unit with a braking structure according to claim 3, characterized in that: The drive shaft (2) and the brake piston (21) are connected and fixed in a flat key-type nested manner, a bearing (25) is provided between the drive shaft (2) and the shaft sleeve (12), and a pair of bearing retaining rings (26) that are embedded in the drive shaft (2) are provided at the rear end of the bearing (25).

9. The wheel hub unit with a braking structure according to claim 1, characterized in that: The wheel hub flange (5) is provided with a plurality of wheel hub bolts (6) which are plugged into the wheel hub flange (5).

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