CN209959761U

CN209959761U - Built-in brake system for hub motor

Info

Publication number: CN209959761U
Application number: CN201920713289.XU
Authority: CN
Inventors: 李岳
Original assignee: Shanghai Wisdom Power Technology Co Ltd
Current assignee: Shanghai Wisdom Power Technology Co Ltd
Priority date: 2019-05-18
Filing date: 2019-05-18
Publication date: 2020-01-17
Anticipated expiration: 2029-05-18

Abstract

A built-in brake system for a hub motor belongs to the technical field of hub motors and comprises a hub, an outer shell, a disc spring, a piston, an embedded block, an oil cavity, a left end plate of a clutch, a friction plate of the clutch, a steel sheet of the clutch and a right end plate of the clutch, wherein gaskets, the disc spring, the piston and the embedded block are all arranged in the outer shell; the piston and the surrounding parts form a liquid-filled brake oil cavity, a brake-releasing oil cavity and a standby oil cavity. In the utility model, when the parking brake is performed, only the disc spring drives the piston to move right, and all the oil cavities do not work; when the vehicle is braked, the liquid-filled brake oil cavity is filled with oil, and the liquid-filled brake oil cavity and the disc spring drive the piston to move right; when driving, the oil filling of the brake oil cavity is released, and the piston is pushed to move left. The utility model relates to a rationally, the structure is ingenious, and the braking is reliable, both saves space and can satisfy the high degree of difficulty technical indicator of line, the integration of parking double path again.

Description

Built-in brake system for hub motor

Technical Field

The utility model relates to a wheel hub motor technical field's braking system, especially a wheel hub motor that not only saves space but also can satisfy line, the integration of parking double path uses built-in braking system.

Background

The wheel hub motor technology is also called as the wheel built-in motor technology, and the most important characteristic of the wheel hub motor technology is that power, transmission and braking devices are integrated into a wheel hub, so that the mechanical part of an electric vehicle is greatly simplified. In the 70 s of the 20 th century, the technology is applied to the fields of mine transport vehicles and the like. For the hub motor used by passenger cars, the daily manufacturers develop the technology earlier and are in the leading position at present, and the international automobile huge heads including the universal and Toyota also contribute to the technology.

The research on the hub motor in China is mostly concentrated in colleges and universities, the products are all electric vehicles, but the research on the driving technology of the hub motor is not mature, and particularly, in the aspect of the development of the high-torque hub motor, certain gap is reserved between the high-torque hub motor and foreign advanced products, so that the research and development investment on the hub motor technology needs to be strengthened, the core competitiveness is improved, the gap is reduced, and the advanced level of the world is achieved. The hub motor has greatly increased unsprung mass and increased moment of inertia of the hub, which is disadvantageous to the handling performance of the vehicle. Meanwhile, in the vehicle driven by the hub motor, because the electric braking capacity of the hub motor system is small, the requirement of the braking performance of the whole vehicle cannot be met, a mechanical braking system is required to be added, the braking assistance is provided by an electric vacuum pump, the energy consumed by the braking system influences the endurance mileage of the electric vehicle, and the space required by the braking system is large.

Disclosure of Invention

The utility model discloses to prior art's not enough, provide a built-in braking system for wheel hub motor, the structure is ingenious, and the braking is reliable, both saves space and can satisfy the high degree of difficulty technical indicator volume of going, the integration of parking double track again.

The utility model discloses a realize through following technical scheme, the utility model discloses a wheel hub, the shell body, interior casing, first order reduction gear internal tooth, second grade reduction gear internal tooth, gasket, dish spring, piston, the abaculus, retaining ring, O type circle, liquid filling brake oil pocket, remove the brake oil pocket, reserve oil pocket, clutch left end board, clutch friction disc, clutch steel sheet, clutch right end board, the shell body, interior casing link together, first order reduction gear internal tooth, second grade reduction gear internal tooth equipartition are at the internal face of interior casing, first order reduction gear internal tooth is located the right-hand member of interior casing inboard, second grade reduction gear internal tooth is located the middle of interior casing inboard; the gasket, the disc spring, the piston, the embedded block and the check ring are all arranged in the outer shell, the gasket and the disc spring are sequentially arranged on the left side of the piston, the embedded block and the check ring are sequentially arranged on the right outer side of the piston, O-shaped rings are arranged on the inner outer sides of the piston and the embedded block, a cavity between the left outer side of the piston and the outer shell forms a liquid-filled braking oil cavity, a cavity between the right outer side of the piston and the embedded block forms a braking oil cavity, and a cavity between the piston and the disc spring forms a spare oil cavity; the clutch left end plate, the clutch friction plate, the clutch steel sheet and the clutch right end plate are arranged at the left end of the inner shell, and the clutch friction plate and the clutch steel sheet are arranged between the clutch left end plate and the clutch right end plate; gear teeth are uniformly distributed on the outer side edges of the left end plate, the steel sheet and the right end plate of the clutch, the gear teeth are distributed on the inner side edge of the friction plate of the clutch, inner teeth are also distributed on the left end of the inner side of the inner shell, and the gear teeth on the outer side edges of the left end plate, the steel sheet and the right end plate of the clutch are matched with the inner teeth on the left end of the inner side of the inner shell; the spline is arranged at the contact position of the hub, the clutch left end plate, the clutch friction plate, the clutch steel sheet and the clutch right end plate.

Further, the utility model discloses in, the longitudinal section of gasket, dish spring, piston, abaculus is the ring structure, and the cross section of piston is "native" style of calligraphy.

Furthermore, in the present invention, the clutch friction plate and the clutch steel plate are arranged at intervals.

Furthermore, in the present invention, the clutch is a wet clutch.

Further, the utility model discloses in, one-level reduction gear internal tooth, second reduction gear internal tooth respectively with one-level reduction gear assembly, second reduction gear assembly phase-match.

Compared with the prior art, the utility model discloses have following beneficial effect and do: the utility model discloses a hydraulic pressure full set wet brake, reasonable in design, the structure is ingenious, and the braking is reliable, both saves space and can satisfy the high degree of difficulty technical indicator of line, the integration of parking double path again.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

fig. 3 is an exploded view of an embodiment of the present invention;

FIG. 4 is a partial enlarged view of the left side of FIG. 3;

FIG. 5 is a partial enlarged view of the right side of FIG. 3;

wherein: 1. the brake device comprises a hub, 2, an outer shell, 3, an inner shell, 4, primary reducer internal teeth, 5, secondary reducer internal teeth, 6, a gasket, 7, a disc spring, 8, a piston, 9, an insert block, 10, a retainer ring, 11, an O-shaped ring, 12, a liquid-filled brake oil cavity, 13, a brake release oil cavity, 14, a spare oil cavity, 15, a clutch left end plate, 16, a clutch friction plate, 17, a clutch steel sheet, 18 and a clutch right end plate.

Detailed Description

The embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the embodiments of the present invention are based on the technical solution of the present invention and provide detailed embodiments and specific operation processes, but the scope of the present invention is not limited to the following embodiments.

Examples

Fig. 1 to 5 show specific embodiments, the present invention includes a wheel hub 1, an outer shell 2, an inner shell 3, primary reducer inner teeth 4, secondary reducer inner teeth 5, a gasket 6, a disc spring 7, a piston 8, an insert 9, a retainer ring 10, an O-ring 11, a liquid-filled brake oil cavity 12, a brake oil releasing cavity 13, a spare oil cavity 14, a clutch left end plate 15, a clutch friction plate 16, a clutch steel sheet 17, and a clutch right end plate 18, wherein the outer shell 2 and the inner shell 3 are connected together, the primary reducer inner teeth 4 and the secondary reducer inner teeth 5 are both arranged on the inner wall surface of the inner shell 3, the primary reducer inner teeth 4 are located at the right end of the inner shell 3, and the secondary reducer inner teeth 5 are located in the; the gasket 6, the disc spring 7, the piston 8, the insert block 9 and the check ring 10 are all arranged in the outer shell 2, the gasket 6 and the disc spring 7 are sequentially arranged on the left side of the piston 8, the insert block 9 and the check ring 10 are sequentially arranged on the right outer side of the piston 8, O-shaped rings 11 are arranged on the inner sides and the outer sides of the piston 8 and the insert block 9, a liquid-filled brake oil cavity 12 is formed by a cavity between the left outer side of the piston 8 and the outer shell 2, a brake releasing oil cavity 13 is formed by a cavity between the right outer side of the piston 8 and the insert block 9, and a spare oil cavity 14 is formed by a cavity between the; the clutch left end plate 15, the clutch friction plate 16, the clutch steel sheet 17 and the clutch right end plate 18 are arranged at the left end of the inner shell 3, and the clutch friction plate 16 and the clutch steel sheet 17 are arranged between the clutch left end plate 15 and the clutch right end plate 18; gear teeth are uniformly distributed on the outer side edges of the clutch left end plate 15, the clutch steel sheet 17 and the clutch right end plate 18, the gear teeth are distributed on the inner side edge of the clutch friction plate 16, inner teeth are also distributed on the left end of the inner side of the inner shell 3, and the gear teeth on the outer side edges of the clutch left end plate 15, the clutch steel sheet 17 and the clutch right end plate 18 are matched with the inner teeth on the left end of the inner side of the inner shell 3; splines are arranged at the contact positions of the hub 1, the clutch left end plate 15, the clutch friction plate 16, the clutch steel sheet 17 and the clutch right end plate 18; the clutch friction plate 16 and the clutch steel sheet 17 are arranged at intervals, the clutch is a wet clutch gasket 6, the longitudinal sections of the disc spring 7, the piston 8 and the embedded block 9 are all of a circular ring structure, and the cross section of the piston 8 is in a shape of Chinese character 'tu'.

In the utility model, the clutch is matched with the spline on the hub 1, and the brake of the hub 1 can be realized; the liquid-filled brake oil chamber 12, the brake-releasing oil chamber 13 and the spare oil chamber 14 are connected with related high-pressure oil paths.

In the implementation process of the utility model, when parking braking is carried out, only the disc spring 7 drives the piston 8 to move right, so as to realize braking on the hub 1, and the liquid-filled brake oil cavity 12, the brake-releasing oil cavity 13 and the standby oil cavity 14 do not work; during service braking, oil is filled in the liquid-filled brake oil cavity 12, the liquid-filled brake oil cavity 12 and the disc spring 7 drive the piston 8 to move right, braking on the hub 1 is realized, and the brake oil cavity 13 and the spare oil cavity 14 are released; during service braking, when the system judges that the disc spring 7 fails or the disc spring force is insufficient, oil is filled in the liquid-filled brake oil cavity 12 and the spare oil cavity 14, the liquid-filled brake oil cavity 12, the spare oil cavity 14 and the disc spring 7 drive the piston 8 to move right, braking on the hub 1 is achieved, and the brake oil cavity 13 is released from not working; when driving, oil is filled in the brake releasing oil cavity 13, and the force for pushing the piston 8 leftwards by the brake releasing oil cavity 13 is larger than the force for driving the piston 8 rightwards by the disc spring 7, so that the hub 1 is not restrained by braking force.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.

Claims

1. A built-in brake system for a hub motor comprises a hub (1), an outer shell (2) and an inner shell (3), wherein the outer shell (2) and the inner shell (3) are connected together, the hydraulic brake is characterized by further comprising primary reducer inner teeth (4), secondary reducer inner teeth (5), a gasket (6), a disc spring (7), a piston (8), an embedded block (9), a check ring (10), an O-shaped ring (11), a liquid filling brake oil cavity (12), a brake releasing oil cavity (13), a standby oil cavity (14), a clutch left end plate (15), a clutch friction plate (16), a clutch steel sheet (17) and a clutch right end plate (18), wherein the primary reducer inner teeth (4) and the secondary reducer inner teeth (5) are all arranged on the inner wall surface of the inner shell (3), the primary reducer inner teeth (4) are located at the right end of the inner shell (3), and the secondary reducer inner teeth (5) are located in the middle of the inner shell (3); the gasket (6), the disc spring (7), the piston (8), the embedded block (9) and the check ring (10) are all arranged in the outer shell (2), the gasket (6) and the disc spring (7) are sequentially arranged on the left side of the piston (8), the embedded block (9) and the check ring (10) are sequentially arranged on the right outer side of the piston (8), O-shaped rings (11) are respectively arranged on the inner outer sides of the piston (8) and the embedded block (9), a cavity between the left outer side of the piston (8) and the outer shell (2) forms a brake fluid-filled oil cavity (12), a cavity between the right outer side of the piston (8) and the embedded block (9) forms a brake fluid-filled oil cavity (13), and a cavity between the piston (8) and the disc spring (7) forms a spare oil cavity; the clutch left end plate (15), the clutch friction plate (16), the clutch steel sheet (17) and the clutch right end plate (18) are arranged at the left end of the inner shell (3), and the clutch friction plate (16) and the clutch steel sheet (17) are arranged between the clutch left end plate (15) and the clutch right end plate (18); gear teeth are uniformly distributed on the outer side edges of the clutch left end plate (15), the clutch steel sheet (17) and the clutch right end plate (18), the gear teeth are distributed on the inner side edge of the clutch friction plate (16), inner teeth are also distributed on the left end of the inner side of the inner shell (3), and the gear teeth on the outer side edges of the clutch left end plate (15), the clutch steel sheet (17) and the clutch right end plate (18) are matched with the inner teeth on the left end of the inner side of the inner shell (3); the contact positions of the hub (1) and the clutch left end plate (15), the clutch friction plate (16), the clutch steel sheet (17) and the clutch right end plate (18) are provided with splines.

2. The built-in brake system for the hub motor according to claim 1, wherein the longitudinal sections of the gasket (6), the disc spring (7), the piston (8) and the insert (9) are all in a circular ring structure, and the cross section of the piston (8) is in a shape of Chinese character 'tu'.

3. The built-in brake system for hub motor according to claim 2, wherein the clutch friction plate (16) and the clutch steel plate (17) are arranged at intervals.

4. The built-in brake system for a hub motor according to claim 3, wherein the clutch is a wet clutch.

5. The built-in brake system for the hub motor according to claim 4, wherein the primary reducer internal teeth (4) and the secondary reducer internal teeth (5) are respectively matched with the primary reducer assembly and the secondary reducer assembly.