CN211875039U - Wheel and hub motor reducer - Google Patents

Abstract

The utility model discloses a wheel hub motor reduction gear, back shaft including an organic whole setting, the both ends difference suit of back shaft is equipped with rather than the input shaft cover of normal running fit and rotates output, the input shaft cover with it is equipped with reduction gear group to rotate between the output. The utility model also discloses a wheel, include as above in-wheel motor reduction gear, in-wheel motor and rim, in-wheel motor drive the input shaft cover rotates, the rim with rotate the synchronous rotation of output. The wheel of the utility model has better rigidity and stronger bearing capacity of the supporting shaft which is integrally arranged; when the wheel receives the yawing force, whole reduction gear can be along with the back shaft synchronous deflection, can not take place relative displacement between the inside part of reduction gear, can guarantee the cooperation precision of reduction gear under various operating modes, reduces wearing and tearing, improves life.

Description

Wheel and hub motor reducer

Technical Field

The utility model relates to a reduction gear, specific be an in-wheel motor reduction gear and adopt this in-wheel motor reduction gear's wheel.

Background

Chinese patent publication No. CN201570941U discloses a speed reduction mechanism for an in-wheel motor of an electric bicycle or an electric motorcycle, which mainly comprises a wheel hub and a wheel hub supporting shaft, wherein rotors of direct current motors arranged in a left end cover and a right end cover are fixedly connected with a motor shaft, and a power output end of the motor shaft is provided with a pinion.

Although the speed reducing mechanism of the hub motor can meet the use requirement to a certain extent, the speed reducing mechanism still has the following defects:

1. in order to facilitate the installation of the wheel, the left support shaft and the right support shaft are respectively arranged at two ends of the motor shaft, and the left support shaft and the right support shaft are divided into two sections, when the vehicle runs normally, rotating shafts of the left support shaft and the right support shaft are coaxial, but when the vehicle is subjected to lateral force, the left support shaft and the right support shaft can deflect, namely the left support shaft and the right support shaft are not coaxial, so that a part of parts of the speed reducing mechanism can deflect along with the corresponding left support shaft or right support shaft, the abrasion between gears is increased, the service life is shortened, and even the speed reducing mechanism is failed in serious cases; in addition, the left support shaft and the right support shaft are arranged in two sections, so that the bearing capacity of the whole speed reducing mechanism is insufficient;

2. the gear set of the speed reducing mechanism adopts a duplicate gear to be respectively meshed with the pinion and the output gear, although a certain speed reducing effect can be achieved, the transmission ratio is limited, and a large speed reducing ratio is difficult to achieve in a narrow space such as a hub; that is, if the hub motor is a high-speed motor, the speed reduction mechanism cannot meet the use requirement of high speed reduction ratio.

Disclosure of Invention

In view of this, the utility model aims at providing a wheel and in-wheel motor reduction gear can effectively strengthen structural rigidity and bearing capacity to have small, longe-lived advantage.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model discloses at first provide an in-wheel motor reduction gear, back shaft including an organic whole setting, the both ends difference suit of back shaft is equipped with rather than the input shaft cover of normal running fit and rotates output, the input shaft cover with it is equipped with reduction gear group to rotate between the output.

Furthermore, the reduction gear set comprises a sun gear, a planet gear, a gear ring and a planet gear carrier, wherein the sun gear rotates synchronously with the input shaft sleeve, the planet gear is meshed with the sun gear, the gear ring is meshed with the planet gear, the planet gear carrier is used for mounting the planet gear, and the rotation output member rotates synchronously with the planet gear carrier.

Furthermore, an input end cover plate and an output end cover plate are respectively arranged on two sides of the gear ring, and the gear ring, the input end cover plate and the output end cover plate are fixedly connected.

Further, the planet wheel carrier comprises an input end planet carrier and an output end planet carrier; the input end planet carrier is positioned between the input end cover plate and the planet wheel, and the input end planet carrier and the input end cover plate are in running fit; the output end planet carrier is positioned between the output end cover plate and the planet wheel, and the output end planet carrier and the output end cover plate are in running fit; the planet wheel is arranged between the input end planet carrier and the output end planet carrier in a rotating fit mode.

Further, the rotation output piece and the output end planet carrier are fixedly connected, or the rotation output piece and the output end planet carrier are integrated.

Further, first seal rings are respectively arranged between the input end cover plate and the gear ring and between the output end cover plate and the gear ring; the supporting shaft is sleeved with a positioning sleeve positioned in the rotation output part, and at least one second sealing ring is arranged between the positioning sleeve and the supporting shaft; and a third sealing ring is arranged between the input end cover plate and the input shaft sleeve.

Further, the sun gear is disposed on the input shaft sleeve.

The utility model also provides a wheel, include as above in-wheel motor reduction gear, in-wheel motor and rim, in-wheel motor drive the input shaft cover rotates, the rim with rotate the synchronous rotation of output.

Further, the shell of the hub motor is fixedly connected with the input end cover plate.

Further, the rim is fixedly connected with the planet wheel carrier.

The beneficial effects of the utility model reside in that:

the utility model discloses an in-wheel motor reduction gear, through setting up the back shaft of integral type to suit input shaft cover and rotation output respectively at the both ends of back shaft, set up the reduction gear group between input shaft cover and rotation output, not only can realize speed reduction drive's technical purpose, and the rigidity of the back shaft of integrative setting is better, and bearing capacity is stronger moreover; in the operation process, the support shaft is always kept in a static state, and the support shaft and the wheel bottom fork are more convenient and reliable to assemble; when the wheel receives the yawing force, whole reduction gear can be along with the back shaft synchronous deflection, can not take place relative displacement between the inside part of reduction gear, can guarantee the cooperation precision of reduction gear under various operating modes, reduces wearing and tearing, improves life.

Through setting up reduction gear set to the planet sun gear drive who has sun gear, planet wheel and ring gear, can effectively guarantee that reduction gear set has sufficient speed reduction drive ratio, when in-wheel motor adopted high speed motor promptly, also can satisfy the operation requirement of high reduction ratio.

Drawings

In order to make the purpose, technical scheme and beneficial effect of the utility model clearer, the utility model provides a following figure explains:

fig. 1 is a schematic structural view of the wheel of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

fig. 3 is an exploded view of the wheel of the present embodiment.

Description of reference numerals:

1-supporting a shaft; 2-input shaft sleeve; 3-a rotation output; 4-a sun gear; 5-a planet wheel; 6-gear ring; 7-input end cover plate; 8-output end cover plate; 9-input end planet carrier; 10-output end planet carrier; 11-a first sealing ring; 12-a positioning sleeve; 13-a second sealing ring; 14-a third sealing ring; 15-a rim; 16-shell.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

As shown in fig. 1, the structure of the wheel of the present invention is schematically illustrated. The wheel of this embodiment includes an in-wheel motor reducer, an in-wheel motor, and a rim 15. The wheel hub motor reducer of this embodiment, including the back shaft 1 of integrative setting, the both ends of back shaft 1 suit respectively is equipped with rather than rotation complex input axle sleeve 2 and rotate output 3, is equipped with reduction gear group between input axle sleeve 2 and the rotation output 3. The hub motor drives the input sleeve 2 to rotate, and the rim 15 rotates synchronously with the rotation output member 3. The housing 16 of the in-wheel motor of the embodiment is fixedly connected with the input end cover plate 7. The rim of the embodiment is fixedly connected with the planet wheel carrier.

Further, the reduction gear set comprises a sun gear 4 rotating synchronously with the input shaft sleeve 2, a planet gear 5 meshed with the sun gear 4, a gear ring 6 meshed with the planet gear and a planet carrier used for mounting the planet gear 5, and the rotation output member 3 rotates synchronously with the planet carrier. Specifically, the rotation output member 3 and the output end planet carrier 10 are fixedly connected, or the rotation output member 3 and the output end planet carrier 10 are integrated. The rotation output member 3 of the present embodiment is integrated with the output carrier 10, and the structure can be simplified. The sun gear 4 of the present embodiment is provided on the input sleeve 2, and the structure can be simplified.

Furthermore, an input end cover plate 7 and an output end cover plate 8 are respectively arranged on two sides of the gear ring 6, and the gear ring 6, the input end cover plate 7 and the output end cover plate 8 are fixedly connected. The planet carrier comprises an input end planet carrier 9 and an output end planet carrier 10; the input end planet carrier 9 is positioned between the input end cover plate 7 and the planet wheel 5, and the input end planet carrier 9 is in running fit with the input end cover plate 7; the output end planet carrier 10 is positioned between the output end cover plate 8 and the planet wheel 5, and the output end planet carrier 10 is in running fit with the output end cover plate 8; the planet wheels 5 are mounted in a running fit between an input planet carrier 9 and an output planet carrier 10.

Further, in the present embodiment, first seal rings 11 are respectively disposed between the input end cover plate 7 and the gear ring 6 and between the output end cover plate 8 and the gear ring 6; the supporting shaft 1 is sleeved with a positioning sleeve 12 positioned in the rotation output part 3, and at least one second sealing ring 13 is arranged between the positioning sleeve 12 and the supporting shaft 1; a third sealing ring 14 is arranged between the input end cover plate 7 and the input shaft sleeve 2, and specifically, the third sealing ring 14 of the present embodiment is arranged between a shell 16 of the in-wheel motor and the input shaft sleeve 2. Through setting up seal structure, form the airtight space that surrounds reduction gear set, so can adopt lubricating oil to realize improving lubricated effect to reduction gear set's lubrication.

Of course, the reduction gear set can also be realized by adopting various existing gear set structures, for example, the chinese patent with the publication number CN201570941U discloses a reduction gear set recorded in a reduction mechanism of a hub motor for an electric bicycle or an electric motorcycle, and the description is not repeated.

The wheel of the embodiment can be used for electric bicycles, electric motorcycles and the like, and the description is not repeated.

According to the wheel, the integrated supporting shaft is arranged, the input shaft sleeve and the rotation output part are respectively sleeved at the two ends of the supporting shaft, and the reduction gear set is arranged between the input shaft sleeve and the rotation output part, so that the technical purpose of speed reduction transmission can be achieved, and the supporting shaft is better in rigidity and stronger in bearing capacity; in the operation process, the support shaft is always kept in a static state, and the support shaft and the wheel bottom fork are more convenient and reliable to assemble; when the wheel receives the yawing force, whole reduction gear can be along with the back shaft synchronous deflection, can not take place relative displacement between the inside part of reduction gear, can guarantee the cooperation precision of reduction gear under various operating modes, reduces wearing and tearing, improves life. Through setting up reduction gear set to the planet sun gear drive who has sun gear, planet wheel and ring gear, can effectively guarantee that reduction gear set has sufficient speed reduction drive ratio, when in-wheel motor adopted high speed motor promptly, also can satisfy the operation requirement of high reduction ratio.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims (10)

1. An in-wheel motor reduction gear which characterized in that: the automatic transmission mechanism comprises a supporting shaft (1) which is integrally arranged, wherein an input shaft sleeve (2) and a rotation output piece (3) which are matched with the supporting shaft in a rotating mode are respectively sleeved at two ends of the supporting shaft (1), and a reduction gear set is arranged between the input shaft sleeve (2) and the rotation output piece (3).

2. The in-wheel motor reducer of claim 1, wherein: the reduction gear set comprises a sun gear (4) rotating synchronously with the input shaft sleeve (2), a planet gear (5) meshed with the sun gear (4), a gear ring (6) meshed with the planet gear and a planet gear carrier used for mounting the planet gear (5), and the rotation output member (3) and the planet gear carrier rotate synchronously.

3. The in-wheel motor reducer of claim 2, wherein: and an input end cover plate (7) and an output end cover plate (8) are respectively arranged on two sides of the gear ring (6), and the gear ring (6), the input end cover plate (7) and the output end cover plate (8) are fixedly connected.

4. The in-wheel motor reducer of claim 3, wherein: the planet carrier comprises an input end planet carrier (9) and an output end planet carrier (10); the input end planet carrier (9) is positioned between the input end cover plate (7) and the planet wheel (5), and the input end planet carrier (9) is in running fit with the input end cover plate (7); the output end planet carrier (10) is positioned between the output end cover plate (8) and the planet wheel (5), and the output end planet carrier (10) is in running fit with the output end cover plate (8); the planet wheel (5) is arranged between the input end planet carrier (9) and the output end planet carrier (10) in a rotating fit mode.

5. The in-wheel motor reducer of claim 4, wherein: the rotary output member (3) is fixedly connected with the output end planet carrier (10), or the rotary output member (3) and the output end planet carrier (10) are integrated.

6. The in-wheel motor reducer of claim 3, wherein: first sealing rings (11) are respectively arranged between the input end cover plate (7) and the gear ring (6) and between the output end cover plate (8) and the gear ring (6); the supporting shaft (1) is sleeved with a positioning sleeve (12) positioned in the rotation output part (3), and at least one second sealing ring (13) is arranged between the positioning sleeve (12) and the supporting shaft (1); and a third sealing ring (14) is arranged between the input end cover plate (7) and the input shaft sleeve (2).

7. The in-wheel motor reducer of claim 2, wherein: the sun gear (4) is arranged on the input shaft sleeve (2).

8. A wheel, characterized by: comprising a hub motor reducer according to any one of claims 1-7, a hub motor driving the input hub (2) in rotation, and a rim (15) rotating synchronously with the rotation output member (3).

9. The wheel of claim 8, wherein: the reduction gear set comprises a sun gear (4) rotating synchronously with the input shaft sleeve (2), a planet gear (5) meshed with the sun gear (4), a gear ring (6) meshed with the planet gear and a planet gear carrier used for mounting the planet gear (5), and the rotation output member (3) rotates synchronously with the planet gear carrier; an input end cover plate (7) and an output end cover plate (8) are respectively arranged on two sides of the gear ring (6), and the gear ring (6), the input end cover plate (7) and the output end cover plate (8) are fixedly connected; and a shell (16) of the hub motor is fixedly connected with the input end cover plate (7).

10. A wheel according to claim 9, wherein: the rim is fixedly connected with the planet wheel carrier.

Images