CN212889685U

CN212889685U - Omnidirectional wheel and scooter with same

Info

Publication number: CN212889685U
Application number: CN202021675509.3U
Authority: CN
Inventors: 史修宇; 杨磊
Original assignee: Beijing Delta Robotics Technology Co ltd
Current assignee: Beijing Wujiang Technology Co ltd
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2021-04-06
Anticipated expiration: 2030-08-12

Abstract

The utility model provides an omniwheel and have car of riding instead of walk of omniwheel. The omni wheel includes: a hub; the supporting pieces are distributed on the hub in a circumferential manner, each supporting piece is provided with a first mounting surface and a second mounting surface which are arranged oppositely, a first mounting shaft is arranged on the first mounting surface, a second mounting shaft is arranged on the second mounting surface, a first axis of the first mounting shaft and a second axis of the second mounting shaft are parallel to each other, a plane formed by the first axis and the second axis is perpendicular to the rotation axis of the hub, and a first distance is reserved between the first axis of the first mounting shaft and the second axis of the second mounting shaft in the plane; each first mounting shaft is rotatably provided with at least one first roller; and each second mounting shaft is rotatably provided with at least one second roller. The omnidirectional wheel is simple in structure and convenient to assemble.

Description

Omnidirectional wheel and scooter with same

Technical Field

The embodiment of the utility model provides a relate to mechanical equipment technical field, especially relate to an omniwheel and have car of riding instead of walk of omniwheel.

Background

In the car of riding instead of walk now, in order to guarantee the use travelling comfort of the car of riding instead of walk, can adapt to more road conditions and use the scene, the car of riding instead of walk generally includes the omni wheel. The omnidirectional wheel is a wheel with lateral movement capability, can freely move laterally while providing circumferential driving force, and improves the movement flexibility of the scooter.

The existing omnidirectional wheel has some problems, for example, the existing omnidirectional wheel has a complex structure, so that the production cost is high, the installation is difficult, the installation efficiency is low, and further the production of the omnidirectional wheel and the scooter is difficult.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiment of the present invention provides an omni wheel and a scooter with the omni wheel, so as to solve some or all of the above problems.

The embodiment of the utility model provides an omni wheel, it includes: a hub; the supporting pieces are distributed on the hub in a circumferential manner, each supporting piece is provided with a first mounting surface and a second mounting surface which are arranged oppositely, a first mounting shaft is arranged on the first mounting surface, a second mounting shaft is arranged on the second mounting surface, a first axis of the first mounting shaft and a second axis of the second mounting shaft are parallel to each other, a plane formed by the first axis and the second axis is perpendicular to the rotation axis of the hub, and a first distance is reserved between the first axis of the first mounting shaft and the second axis of the second mounting shaft in the plane; each first mounting shaft is rotatably provided with at least one first roller; and each second mounting shaft is rotatably provided with at least one second roller.

Optionally, along the circumference of the distribution circumference of the plurality of supporting members, the plurality of first rollers are sequentially arranged at intervals, and a second roller is arranged between two adjacent first rollers.

Optionally, the first roller has a first large diameter end and a first small diameter end, the second roller has a second large diameter end and a second small diameter end, and the second small diameter end of the second roller is embedded into the accommodating hole formed in the first small diameter end of the adjacent first roller.

Optionally, the diameter of the first small diameter end of the first roller is larger than the diameter of the second large diameter end of the second roller.

Optionally, a plurality of grooves are formed in the hub, the grooves are sequentially arranged at intervals along the circumferential direction of the distribution circumference of the support pieces, the grooves and the support pieces are arranged in a one-to-one correspondence manner, each groove comprises a bottom mounting surface and two side mounting surfaces, and the two side mounting surfaces are arranged at intervals along the circumferential direction of the distribution circumference; the distance between the two side mounting surfaces of the at least one groove gradually decreases along the direction from the opening of the groove to the bottom surface, or the two side mounting surfaces of the at least one groove are perpendicular to the corresponding bottom mounting surface.

Optionally, the support member includes a base portion engaged with the groove, the base portion includes a base bottom surface and base side surfaces located at both sides of the base bottom surface, and a distance between the two base side surfaces is gradually reduced along a direction gradually approaching the base bottom surface, or, the two base side surfaces are perpendicular to the corresponding base bottom surface.

Optionally, the base portion is provided with a threaded bore, the axis of the threaded bore being directed towards the centre of the wheel hub.

Optionally, the bottom of the recess is provided with a through hole, which is concentric with the threaded hole on the corresponding base part when the base part of the support is inserted into the recess.

Optionally, the length of the first mounting shaft is greater than the length of the second mounting shaft.

According to another aspect of the present invention, there is provided a scooter, comprising a seat and an omni wheel, wherein the omni wheel is rotatably disposed at both sides of the seat, and the omni wheel is the above omni wheel.

As can be seen from the above, the hub of the omni wheel is used for mounting the support member, the first roller, the second roller, and the like. The supporting pieces are used for mounting the first idler wheels and the second idler wheels, and the supporting pieces are distributed on the hub in a circumferential manner, so that the first idler wheels and the second idler wheels are uniformly distributed along the circumferential direction of the hub. Because the first axis of the first mounting shaft and the second axis of the second mounting shaft on the support member are parallel to each other, the plane formed by the first axis and the second axis is perpendicular to the rotation axis of the hub, and a first distance is provided between the first axis of the first mounting shaft and the second axis of the second mounting shaft in the plane, that is, the first axis of the first mounting shaft and the second axis of the second mounting shaft are not coaxial, so that the roller can adapt to rollers with different diameters, that is, the diameters of the first roller and the second roller can be different. Therefore, the first idler wheel and the second idler wheel can be driven by the hub to rotate and can rotate relative to the hub, and omnidirectional movement is achieved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the embodiments of the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

Figure 1 shows a schematic perspective view of a first perspective of an omni wheel according to an embodiment of the present invention;

figure 2 shows a schematic perspective view of a second perspective of an omni wheel according to an embodiment of the present invention;

fig. 3 shows a schematic front view of an omni wheel according to an embodiment of the present invention;

fig. 4 is a schematic front view showing an omnidirectional wheel with a hub cover removed according to an embodiment of the present invention;

fig. 5 shows a left side view schematic structure diagram of an omni wheel according to an embodiment of the present invention;

fig. 6 shows a schematic perspective view of a hub cooperating with one of the support members according to an embodiment of the present invention;

fig. 7 shows a schematic perspective view of a wheel hub according to an embodiment of the present invention;

fig. 8 shows a schematic perspective view of a support member according to an embodiment of the present invention.

Description of reference numerals:

10. a hub; 11. a groove; 111. a bottom mounting surface; 112. a side mounting surface; 114. a through hole; 20. a support member; 21. a first mounting surface; 22. a second mounting surface; 232. a base side; 233. a threaded hole; 31. a first mounting shaft; 32. a second mounting shaft; 41. a first roller; 411. a first large diameter end; 412. a first small diameter end; 42. a second roller; 421. a second large diameter end; 422. a second small diameter end.

Detailed Description

Of course, it is not necessary for any particular embodiment of the invention to achieve all of the above advantages at the same time.

In order to make those skilled in the art better understand the technical solution of the embodiments of the present invention, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person having ordinary skill in the art should belong to the scope protected by the embodiments of the present invention.

The embodiment of the present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1-5, according to an embodiment of the present invention, there is provided an omni wheel, which includes a wheel hub 10, a plurality of supporting members 20, a first roller 41 and a second roller 42, wherein the plurality of supporting members 20 are circumferentially distributed on the wheel hub 10, each supporting member 20 has a first mounting surface 21 and a second mounting surface 22 which are oppositely arranged, the first mounting surface 21 is provided with a first mounting shaft 31, the second mounting surface 22 is provided with a second mounting shaft 32, a first axis of the first mounting shaft 31 and a second axis of the second mounting shaft 32 are parallel to each other, a plane formed by the first axis and the second axis is perpendicular to a rotation axis of the wheel hub 10, and a first distance L1 is provided between the first axis of the first mounting shaft 31 and the second axis of the second mounting shaft 32 in the plane; each first mounting shaft 31 is rotatably provided with at least one first roller 41; at least one second roller 42 is rotatably disposed on each second mounting axle 32.

The omni wheel hub 10 is used to mount the support member 20, the first roller 41, the second roller 42, and the like. The supporting member 20 is used for mounting the first roller 41 and the second roller 42, and the supporting member 20 is plural and is circumferentially distributed on the hub 10, so that the first roller 41 and the second roller 42 can be uniformly distributed along the circumference of the hub 10. Since the first axis of the first mounting shaft and the second axis of the second mounting shaft on the support member 20 are parallel to each other, and the plane formed by the first axis and the second axis is perpendicular to the rotation axis of the hub, and there is a first distance between the first axis of the first mounting shaft 31 and the second axis of the second mounting shaft 32 in the plane, that is, the first axis of the first mounting shaft 31 and the second axis of the second mounting shaft 32 are not coaxial, it is possible to accommodate rollers of different diameters, that is, it is possible to mount the first roller 41 and the second roller 42 of different diameters on the same support member 20. Therefore, the first roller 41 and the second roller 42 can be driven by the hub 10 to rotate, and can also rotate relative to the hub 10, so as to realize omnidirectional movement.

As shown in fig. 6 and 7, the hub 10 is provided with a plurality of grooves 11, the plurality of grooves 11 are sequentially arranged at intervals along the circumferential direction of the distribution circumference of the plurality of supporting members 20, the grooves 11 are arranged in one-to-one correspondence with the supporting members 20, each groove 11 includes a bottom mounting surface 111 and two side mounting surfaces 112, and the two side mounting surfaces 112 are arranged at intervals along the circumferential direction of the distribution circumference.

In one possible way, the distance between the two side mounting surfaces 112 of at least one recess 11 gradually decreases in the direction from the opening to the bottom surface of the recess 11. Thus, the two side mounting surfaces 112 of the groove 11 are inclined surfaces, so that the area of the opening of the groove 11 is larger than that of the bottom mounting surface, thereby positioning and guiding the support member 20 and facilitating the installation thereof.

In another possibility, the two side mounting surfaces 112 of at least one recess 11 are perpendicular to the corresponding bottom mounting surface 111. This provides for more convenient machining, helps to reduce production costs, and ensures reliable positioning of the support member 20.

In this embodiment, the bottom mounting surface 111 is planar for ease of manufacture and better support for the support member 20.

The hub 10 is further provided with a shaft hole for mounting the roller, and the axis of the shaft hole is the rotation axis of the hub. The center of the wheel hub 10 may be its center of mass, or an appropriate point on the rotational axis of the wheel hub 10 as the center of the wheel.

For cooperation with the hub, the support 20 comprises a base portion for cooperation with the recess 11, the base portion comprising a base bottom surface and base side surfaces 232 on both sides of the base bottom surface.

In one possible approach, the distance between the two base sides 232 decreases in a direction that gradually approaches the base bottom surface. The base portion is thus tapered to allow it to be easily inserted into the recess 11 and retained by the base side 232 and the side mounting surface 112. This tapered configuration also helps to center the support member 20 (i.e., the two base sides 232 are directed toward the center of the hub 10).

In another feasible way, the two base side surfaces 232 are disposed at the corresponding base bottom surfaces, and the base part of the structure can be well adapted to the grooves 11 of the side mounting surfaces 112 and the bottom mounting surfaces 111, which are perpendicular to each other, so that the installation is ensured to be stable, the processing and the production are more convenient, and the cost can be effectively reduced.

Alternatively, in order to enable the support member 20 to be reliably fixed to the hub 10 at the base portion, a screw hole 233 is provided, the axis of the screw hole 233 being directed toward the wheel center of the hub 10. The support member 20 may then be secured to the hub 10 by threaded fasteners (e.g., bolts, screws, etc.).

Optionally, the bottom of the recess 11 is provided with a through hole 114, the through hole 114 being concentric with the corresponding threaded hole 233 on the base portion when the base portion of the support member 20 is inserted into the recess 11. The through holes 114 are aligned with corresponding threaded holes 233 on the support member 20 so that threaded fasteners can be passed through the through holes from the interior of the hub 10 and engage the threaded holes 233 to lock the support member 20.

As shown in fig. 8, the support member 20 includes, in addition to a base portion for mounting the first and second mounting

shafts

31 and 32, a support portion integrally formed with the support portion for fitting with the groove 11 of the wheel hub 10, and for mounting the first and second mounting

shafts

31 and 32.

In the present embodiment, the second mounting surface 22 of the stay 20 is directed toward the center of the wheel hub 10 after the stay 20 is mounted to the wheel hub 10. The first axis of the first mounting shaft 31 and the second axis of the second mounting shaft 32 are parallel to each other, and the distances from the two axes to the wheel centers of the wheel hubs are different, so that after the first roller 41 is mounted on the first mounting shaft 31 and the second roller 42 is mounted on the second mounting shaft 32, the first roller 41 and the second roller 42 can rotate around the tangent line of the wheel hub 10 at the positions where the first roller 41 and the second roller 42 are located, and therefore, the first roller 41 and the second roller 42 can rotate laterally.

Optionally, the length of the first mounting shaft 31 is greater than the length of the second mounting shaft 32. This enables the second mounting shaft 32 to be retracted while ensuring support of the first roller 41 and the second roller 42.

As shown in fig. 1 to 4, along the circumferential direction of the distribution circumference of the plurality of supporting members 20, the plurality of first rollers 41 are sequentially arranged at intervals, and a second roller 42 is arranged between two adjacent first rollers 41.

In the present embodiment, the first small diameter end 412 of the first roller 41 has a diameter larger than the second large diameter end 421 of the second roller 42. In other words, the diameter of the first roller 41 is larger than the diameter of the second roller 42.

Because the first distance from the first axis of the first mounting shaft 31 to the wheel center of the wheel hub 10 is greater than the second distance from the second axis of the second mounting shaft 32 to the wheel center of the wheel hub 10, the second roller 42 with a smaller diameter is mounted at a position closer to the extension of the omni wheel, so that the heights of the first roller 41 and the second roller 42 are consistent at the position contacting with the ground, and the first roller 41 and the second roller 42 are ensured to be capable of contacting with the ground in the rolling process.

Alternatively, to avoid interference, the first roller 41 has a first large diameter end 411 and a first small diameter end 412, the second roller 42 has a second large diameter end 421 and a second small diameter end 422, and the second small diameter end 422 of the second roller 42 is inserted into the receiving hole provided in the first small diameter end 412 of the adjacent first roller 41. In this way, at least a portion of the second roller 42 can be embedded in the first roller 41, so that interference between the first roller 41 and the second roller 42 can be prevented, and relative rotation between the first roller 41 and the second roller 42 can be ensured.

The rollers with different diameters are alternately arranged in a circular manner and are respectively mounted on the mounting shafts on two sides of the support member 20 in pairs, and the second small-diameter end of the second roller 42 with the smaller diameter is embedded into the first small-diameter end of the first roller 41 with the larger diameter, so that the rollers can rotate, and mutual interference is avoided.

The base portion of the support member 20 has a threaded bore with its axis directed toward the wheel center for mounting on the wheel hub by a threaded fastener. The base bottom surface of the base portion is flat and the base side surface of the base portion is inclined to the vertical plane of the base bottom surface, thereby forming guiding and positioning. The axle is gone out to wheel hub center one end, and the circumference equipartition has can with support piece's base bottom surface and base side complex recess, and the screw hole that still has through-hole and support piece is coaxial, can pass the wheel hub through-hole with the bolt follow wheel center outside and twist support piece and fix both, and a plurality of support piece are installed with the same reason.

According to another aspect of the present invention, there is provided a scooter, comprising a seat and an omni wheel, wherein the omni wheel is rotatably disposed at both sides of the seat, and the omni wheel is the above omni wheel. This car of riding instead of walk disposes aforementioned omniwheel, and this omniwheel simple structure, preparation and installation cost are lower, and stability and parallelism in the time of can guaranteeing to move have better use and experience.

The omni wheel of the embodiment has the following beneficial effects:

the both sides of every support piece of omniwheel have first installation axle and second installation axle respectively, and the axis disalignment of first installation axle and second installation axle for can install the gyro wheel of different diameters.

The base part of omniwheel is provided with the screw hole, and the axis of screw hole is directional to the wheel center for can carry out reliable and stable fixed to support piece, guarantee support piece's steadiness.

The above embodiments are only used for illustrating the embodiments of the present invention, and are not intended to limit the embodiments of the present invention, and those skilled in the relevant art can make various changes and modifications without departing from the spirit and scope of the embodiments of the present invention, and therefore all equivalent technical solutions also belong to the scope of the embodiments of the present invention, and the scope of patent protection of the embodiments of the present invention should be defined by the claims.

Claims

1. An omni wheel, comprising:

a hub (10);

the supporting pieces (20) are distributed on the wheel hub (10) in a circumferential mode, each supporting piece (20) is provided with a first mounting surface (21) and a second mounting surface (22) which are arranged oppositely, a first mounting shaft (31) is arranged on each first mounting surface (21), a second mounting shaft (32) is arranged on each second mounting surface (22), a first axis of each first mounting shaft (31) and a second axis of each second mounting shaft (32) are parallel to each other, a plane formed by the first axis and the second axis is perpendicular to a rotating axis of the wheel hub (10), and a first distance is reserved between the first axis of each first mounting shaft (31) and the second axis of each second mounting shaft (32) in the plane;

a first roller (41), at least one first roller (41) being rotatably provided on each first mounting shaft (31);

and each second mounting shaft (32) is rotatably provided with at least one second roller (42).

2. An omni wheel according to claim 1, wherein a plurality of the first rollers (41) are sequentially spaced apart along a circumferential direction of a distribution circumference of the plurality of the support members (20), and one of the second rollers (42) is disposed between adjacent two of the first rollers (41).

3. An omni wheel according to claim 1 or 2, wherein the first roller (41) has a first large diameter end (411) and a first small diameter end (412), the second roller (42) has a second large diameter end (421) and a second small diameter end (422), and the second small diameter end (422) of the second roller (42) is inserted into a receiving hole provided adjacent to the first small diameter end (412) of the first roller (41).

4. An omni wheel according to claim 3, wherein the first small diameter end (412) of the first roller (41) has a diameter greater than the second large diameter end (421) of the second roller (42).

5. An omni wheel according to claim 1, wherein the hub (10) is provided with a plurality of grooves (11), the plurality of grooves (11) are sequentially arranged at intervals in the circumferential direction of the distribution circumference of the plurality of support members (20), the grooves (11) are arranged in one-to-one correspondence with the support members (20), each groove (11) comprises a bottom mounting surface (111) and two side mounting surfaces (112), and the two side mounting surfaces (112) are arranged at intervals in the circumferential direction of the distribution circumference;

the distance between two side mounting surfaces (112) of at least one groove (11) is gradually reduced along the direction from the opening to the bottom surface of the groove (11), or the two side mounting surfaces (112) of at least one groove (11) are perpendicular to the corresponding bottom mounting surface (111).

6. An omni wheel according to claim 5, wherein the support member (20) includes a base portion engaged with the groove (11), the base portion includes a base bottom surface and base side surfaces (232) at both sides of the base bottom surface, a distance between the two base side surfaces (232) is gradually decreased in a direction gradually approaching the base bottom surface, or the two base side surfaces (232) are perpendicular to the corresponding base bottom surface.

7. An omni wheel according to claim 6, wherein the base portion is provided with a threaded hole (233), the axis of the threaded hole (233) being directed to the wheel center of the wheel hub (10).

8. An omni wheel according to claim 7, wherein the bottom of the groove (11) is provided with a through hole (114), and when the base portion of the support member (20) is inserted into the groove (11), the through hole (114) is concentric with the corresponding threaded hole (233) of the base portion.

9. An omni wheel according to claim 1, wherein the length of the first mounting shaft (31) is greater than the length of the second mounting shaft (32).

10. A scooter comprising a seat and omni wheels rotatably provided on either side of the seat, the omni wheels being as claimed in any one of claims 1 to 9.