Patent Description:
A wheel structure of a scooter, a balance bike, a bicycle or other vehicles is designed in various forms, so as to improve the aesthetics and the user experience. In the related art, the wheel structure usually includes a tire, a hub, a spoke, and a central shaft, and various forms of spokes are connected to the hub, so as to obtain an expected appearance effect. However, due to the limitation of the spoke and other basic structures, the wheel in the related prior art has the problems of a complex structure and a lack of sense of science and technology.

<CIT> relates to a drive wheel and an electric scooter. The driving wheel includes an annular wheel body, a first wheel cover, a second wheel cover, a motor, a first gear, a second gear, a third gear, a transmission shaft, a first small bearing, a second small bearing and a large bearing. The inner ring of the annular wheel body is provided with annular teeth and an annular mounting groove. The first wheel cover and the second wheel cover are arranged on the left and right sides of the annular wheel body, respectively. The large bearing is sleeved in the annular mounting groove, and the motor is mounted on one of the wheel covers. The electric scooter includes a skateboard body, a front wheel and a rear wheel, and the rear wheel is a driving wheel with the above structure.

<CIT> relates to an electric scooter which is simple in structure, long in service life and convenient to fold. The electric scooter includes a pedal, a control rod, a front wheel and a rear wheel. The front wheel is connected to the lower end of the control rod, the control rod is connected with one end of the pedal through a folding mechanism, the rear wheel is connected to the other end of the pedal, a power-driven mechanism is arranged on the front wheel or rear wheel and includes a tire body and a supporting ring fixedly connected with the tire body. A magnetic steel, an iron core and a hub are sequentially arranged in the supporting ring from outside to inside, the magnetic steel is fixedly connected with the supporting ring, the hub is fixedly connected with the iron core, bearing caps are rotatably sleeved on two inner sides of the hub and are fixedly connected with the supporting ring, the magnetic steel can rotate relative to the iron core, the bearing caps and the hub are sealed by sealing rings or oil seals, and the bearing caps are rotatably connected with the hub through radial bearings.

<CIT> relates to a hollow wheel body and a vehicle. The hollow wheel body includes a hub and a tire body, the hub includes an inner hub and an outer hub, a bearing is arranged between the inner hub and the outer hub, the tire body covers the outer side of the outer hub and is fixedly connected with the outer hub, the outer hub is rotatably connected with the inner hub, and the inner hub is provided with a supporting element used for connecting with a vehicle body and is positioned on the lower part of the inner hub.

The present invention provides a wheel and a scooter, so as to simplify the structure arrangement of the wheel and improve the appearance effect and the sense of science and technology of the wheel and the scooter.

According to a first aspect of the present invention, a wheel for a scooter is provided, which is adapted to be assembled and fitted with a frame of the scooter. The wheel includes a bearing support, a hub and at least one bearing. The bearing support includes an inner surface facing towards a rotation center of the wheel. The inner surface defines a hollow area surrounded by the inner surface. Each bearing includes an outer ring and an inner ring, the outer ring is fixedly connected to the hub, the inner ring being fixedly connected to the bearing support, and the frame being fixedly connectable to the bearing support.

Optionally, the bearing support includes a supporting body and a connecting structure connected to the supporting body, the bearing is fitted with the supporting body, and the frame is fitted with the connecting structure.

Optionally, at least a part of the connecting structure protrudes beyond the hub.

Optionally, the bearing support includes two connecting structures arranged on two opposite sides of the supporting body respectively.

Optionally, a width of the supporting body in an axial direction of the wheel matches with a width of the hub in the axial direction of the wheel.

Optionally, the bearing support includes at least two support bodies, and the at least two support bodies are assembled and fitted with each other.

Optionally, the wheel includes at least two bearings, and the bearing support includes a left edge and a right edge arranged along an axial direction of the wheel, the inner ring of at least one of the at least two bearings is fitted with the left edge, and the inner ring of at least one bearing is fitted with the right edge.

According to the invention, the wheel further includes at least one bearing end cover, the bearing end cover is fixedly connected to the hub, and the bearing end cover is hermetically fitted with a side surface of the bearing.

The wheel further includes a sealing member arranged between the bearing end cover and the bearing, and the sealing member is hermetically fitted with the bearing end cover and the side surface of the bearing.

Optionally, a section of the hollow area perpendicular to an axial direction of the wheel has a circle shape or a rectangle shape.

According to a second aspect of the present invention, a scooter is provided. The scooter includes a main body, a frame connected to the main body and the wheel according to the first aspect of the present invention and the bearing support is fixedly connected to the frame.

Technical solutions provided by the embodiments of the present invention include the following beneficial effects.

The wheel of the present invention includes the bearing support, the bearing and the hub, and the outer ring of the bearing is fixedly connected to the hub, so that the hub can rotate relative to the frame based on a fixed connection between the bearing support and the frame. The inner ring of the bearing is fixedly connected to the bearing support, so as to realize a support function for the bearing and other structures around the bearing through the bearing support. Since the wheel further includes a hollow area surrounded by the inner surface of the bearing support, the wheel obtains a hollow appearance effect, thus simplifying the wheel structure, and improving the appearance effect and the sense of science and technology of the wheel and the scooter using the above wheel.

It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and do not limit the present invention.

The accompanying drawings incorporated into the specification and forming part of the specification, illustrate embodiments in accordance with the present invention, and are used with the specification to explain the principles of the present invention.

Exemplary embodiments will be described in detail, and examples of the embodiments will be shown in the accompanying drawings. When the following description relates to the accompanying drawings, the same numbers in different accompanying drawings represent the same or similar elements unless otherwise indicated.

The present invention provides a wheel which is adapted to be assembled and fitted with a frame, and the wheel includes a bearing support, a hub and at least one bearing. The bearing includes an outer ring and an inner ring, the outer ring is fixedly connected to the hub, and the inner ring and the frame are fixedly connected to the bearing support, respectively. The bearing support includes an inner surface facing towards a rotation center of the wheel, and the inner surface defines a hollow area surrounded by the inner surface.

Since the wheel includes the bearing support, the bearing and the hub, and the outer ring of the bearing is fixedly connected to the hub, the hub can rotate relative to the frame based on a fixed connection between the bearing support and the frame. The inner ring of the bearing is fixedly connected to the bearing support, to realize a support function for the bearing and other structures around the bearing through the bearing support. Since the wheel further includes the hollow area surrounded by the inner surface of the bearing support, the wheel obtains a hollow appearance effect, thus simplifying the wheel structure, and improving the appearance effect and the sense of science and technology of the wheel. Since the wheel structure is simplified, the material used for the wheel and the cost of the wheel are reduced, and the carbon emission is reduced.

According to the present invention, one, two or more bearings may be provided, which is not limited by the present invention. The wheel structure is exemplarily described below by taking an example in which the wheel includes two bearings.

<FIG> is a side view of the wheel and the frame fitted with each other in an exemplary embodiment of the present invention. <FIG> is a perspective view of the wheel and the frame fitted with each other in an exemplary embodiment of the present invention. <FIG> is a sectional view of the wheel and the frame fitted with each other in an exemplary embodiment of the present invention. As shown in <FIG> and <FIG>, a dash dotted line in <FIG> and <FIG> represents a rotation center axis of a wheel <NUM>. The wheel <NUM> is assembled and fitted with the frame <NUM>. The wheel <NUM> includes a bearing support <NUM>, a hub <NUM> and two bearings <NUM>. Each bearing <NUM> includes an outer ring <NUM> and an inner ring <NUM>, the outer ring <NUM> is fixedly connected to the hub <NUM>, and the inner ring <NUM> and the frame <NUM> are fixedly connected to the bearing support <NUM>, respectively. The bearing support <NUM> includes an inner surface <NUM> facing towards a rotation center of the wheel <NUM>, and the inner surface <NUM> defines a hollow area <NUM> surrounded by the inner surface <NUM>.

In some embodiments, a section of the hollow area <NUM> perpendicular to an axial direction of the wheel <NUM> has a circle shape, a polygon shape or other irregular shapes, which is not limited by the present invention. When the section of the hollow area <NUM> perpendicular to the axial direction of the wheel <NUM> has the circle shape, the overall aesthetics and the sense of science and technology of the wheel <NUM> can be improved. As shown in <FIG>, a characteristic dimension D1 of the hollow area can be greater than or equal to one-third of a contour diameter D2 of the wheel <NUM>, and less than or equal to two-thirds of the contour diameter D2 of the wheel <NUM>, so as to obtain a great appearance effect of a hollow wheel without affecting a structural arrangement of the wheel <NUM>. Or, the contour diameter D2 of the wheel <NUM> may also be another multiple of the characteristic dimension D1 of the hollow area, which is not limited by the present invention.

The characteristic dimension D1 of the hollow area can refer to a characteristic dimension that can reflect an overall shape of the hollow area. For example, when the hollow area has the circle shape, the characteristic dimension D1 of the hollow area can be a diameter of the circle. When the hollow area has the rectangle shape, the characteristic dimension D1 of the hollow area can be a diagonal length of the rectangle.

Since two bearings <NUM> are provided for the wheel <NUM>, the overall structural strength and the rotation stability of the wheel <NUM> are improved. Since the bearing support <NUM> is fixedly connected to the frame <NUM>, and the outer rings <NUM> of the two bearings <NUM> are fixedly connected to the hub <NUM>, respectively, the hub <NUM> can rotate relative to the frame <NUM>. The inner rings <NUM> of the two bearings <NUM> are fixedly connected to the bearing support <NUM>, respectively, so as to support the bearing <NUM> and other structures around the bearing <NUM> through the bearing support <NUM>, thus ensuring the overall structural strength of the wheel <NUM>. Since the wheel <NUM> further includes the hollow area <NUM> surrounded by the inner surface <NUM> of the bearing support <NUM>, the wheel <NUM> obtains a hollow appearance effect, thus simplifying the structure of the wheel <NUM>, and improving the appearance effect and the sense of science and technology of the wheel <NUM>.

It should be noted that the inner ring <NUM> of the bearing <NUM> can be fitted over the bearing support <NUM>, and a fixed connection can be realized by interference fit, clamping, threaded connection, welding, etc. The hub <NUM> can be fitted over the outer ring <NUM> of the bearing <NUM>, and a fixed connection can be realized by interference fit, clamping, threaded connection, welding, etc..

In some embodiments, the bearing support <NUM> may be a structural member formed by one support body <NUM>, or the bearing support <NUM> may also be a structural assembly formed by two or more support bodies <NUM> assembled and fitted with each other, which is not limited by the present invention.

When the bearing support <NUM> includes one support body <NUM>, as shown in <FIG> and <FIG>, the bearing support <NUM> may include a supporting body <NUM> and a connecting structure <NUM> connected to the supporting body <NUM>, the bearing <NUM> is fitted with the supporting body <NUM>, and the frame <NUM> is fitted with the connecting structure <NUM>. A support function for the structure of the wheel <NUM> is realized through the fit of the supporting body <NUM> and the bearing <NUM>, and a fixed connection with the frame <NUM> is realized through the connecting structure <NUM>, thus avoiding the structural and functional interferences between the supporting body <NUM> and the connecting structure <NUM> during assembling and use, and improving the reliability of the wheel <NUM>.

One, two or more connecting structures <NUM> may be provided, which is not limited by the present invention. In some embodiments, as shown in <FIG> and <FIG>, the bearing support <NUM> may include two connecting structures <NUM> arranged on two opposite sides of the supporting body <NUM>, respectively, so as to assemble the wheel <NUM> with the frame <NUM> through the fixed connection between the connecting structures <NUM> located on the two sides of the supporting body <NUM> and the frame <NUM>, thus improving the stability of the use of the wheel <NUM>.

When the bearing support <NUM> is the structural assembly formed by two or more support bodies <NUM> assembled and fitted with each other, as shown in <FIG>, the two or more support bodies <NUM> are assembled and fitted to form the bearing support <NUM>. Partial structures of the two or more support bodies <NUM> are assembled to form the supporting body <NUM>, and at least one support body <NUM> includes the connecting structure <NUM>. When the bearing <NUM> is fitted with a plurality of support bodies <NUM>, it is convenient to adjust and calibrate a position of the bearing <NUM> when assembling the plurality of support bodies <NUM>, thus improving the mounting accuracy of the bearing <NUM>. For example, the bearing support <NUM> includes two support bodies <NUM> and two bearings <NUM>. When the two support bodies <NUM> are assembled and fitted, adjacent main structures <NUM> at an inner side of the two support bodies <NUM> are spliced into the supporting body <NUM>, one bearing <NUM> is assembled on each support body <NUM>, and an outer side of the main structure <NUM> of each support body <NUM> is provided with the connecting structure <NUM>. The positions of the two bearings <NUM> can be adjusted and calibrated when assembling the plurality of support bodies <NUM>, thus improving the mounting accuracy of the bearing <NUM>.

It should be noted that a width of the supporting body <NUM> in a axial direction of the wheel <NUM> can match with a width of the hub <NUM> in the axial direction of the wheel <NUM>, the inner surface <NUM> of the bearing support <NUM> can refer to an inner surface of the supporting body <NUM>, and the hollow area <NUM> of the wheel <NUM> can be surrounded by the inner surface of the supporting body <NUM>, so that a width of the hollow area <NUM> in the axial direction of the wheel <NUM> matches with the width of the hub <NUM> in the axial direction of the wheel <NUM>, thus improving the overall aesthetics of the wheel <NUM>.

In some embodiments, at least a part of the connecting structure <NUM> protrudes beyond the hub <NUM> in the axial direction of the wheel <NUM>, so as to facilitate the assembling and fitting of the frame <NUM> and the connecting structure <NUM> and also to avoid the structural interference between the frame <NUM> and the wheel <NUM>.

It should be noted that the supporting body <NUM> and the connecting structure <NUM> can be integrally formed, and the connecting structure <NUM> can also be assembled to the supporting body <NUM> by means of threaded connection, clamping, welding, etc. The present invention is not limited to this.

In some embodiments, as shown in <FIG>, the dash dotted line in these figures represents the rotation center axis of the wheel <NUM>. The wheel <NUM> may include at least two bearings <NUM>, the bearing support <NUM> includes a left edge and a right edge arranged along the axial direction of the wheel <NUM>, the inner ring <NUM> of at least one of the at least two bearings <NUM> is fitted with the left edge, and the inner ring <NUM> of at least another one of the at least two bearings <NUM> is fitted with the right edge, so as to improve the rotation stability of the wheel <NUM> by increasing a number of the bearings <NUM> and optimizing distribution positions of the bearings <NUM>.

In other embodiments, the wheel <NUM> may also include one bearing <NUM> which matches with a width of the bearing support <NUM> in the axial direction of the wheel <NUM>, thus simplifying the structure and the cost of the wheel <NUM>.

It should be noted that the wheel <NUM> may include one or more bearings <NUM>, and the bearing support <NUM> may include one or more support bodies <NUM>, which is not limited by the present invention. In some embodiments, when the bearing support <NUM> includes one support body <NUM>, the wheel <NUM> may include one or more bearings <NUM>. In other embodiments, when the bearing support <NUM> includes a plurality of support bodies <NUM>, the wheel <NUM> may include one or more bearings <NUM>. In still other embodiments, a number of the bearings <NUM> of the wheel <NUM> can match with a number of the support bodies <NUM> of the bearing support <NUM>, and the bearings <NUM> can be correspondingly fitted with the support bodies <NUM> one to one, so as to adjust and calibrate the positions of the bearings <NUM> when assembling a plurality of support bodies <NUM>, thus improving the mounting accuracy of the bearings <NUM>.

In some embodiments, the wheel <NUM> further includes at least one bearing end cover <NUM>. The bearing end cover <NUM> is fixedly connected to the hub <NUM>, and hermetically fitted with a side surface of the bearing <NUM>. The bearing end cover <NUM> can be fitted with the hub <NUM> to limit and seal the bearing <NUM>, thus improving the dust-proof effect and the water-proof effect of the bearing <NUM>. For example, as shown in <FIG>, the wheel <NUM> includes two bearings <NUM> and one bearing end cover <NUM>. A side surface of one bearing <NUM> of the two bearings <NUM> can be limited and sealed through the structure of the hub <NUM>, and a side surface of the other bearing <NUM> of the two bearings <NUM> can be limited and sealed through the bearing end cover <NUM>, so as to simplify the assembling of the wheel <NUM> and improve the dust-proof effect and the water-proof effect of the bearing <NUM>.

The wheel <NUM> may further include a sealing member <NUM> arranged between the bearing end cover <NUM> and the bearing <NUM>, and the sealing member <NUM> is hermetically fitted with the bearing end cover <NUM> and the side surface of the bearing <NUM>. Since the sealing member <NUM> seals between the bearing end cover <NUM> and the bearing <NUM>, the sealing effect on the side surface of the bearing <NUM> is improved.

In some embodiments, the wheel <NUM> further includes a tire <NUM> assembled to an external side of the hub <NUM>, so that the wheel <NUM> obtains a damping effect.

It should be noted that the fixed connection between the bearing support <NUM> and the frame <NUM>, between two adjacent support bodies <NUM>, and between the bearing end cover <NUM> and the hub <NUM> can be realized by threaded connection, clamping, welding, etc., which is not limited by the present invention.

The present invention further provided a scooter including a main body, a frame <NUM> connected to the main body, and the above wheel <NUM>, and the bearing support <NUM> is fixedly connected to the frame <NUM>.

In the scooter according to embodiments of the present invention, the wheel <NUM> includes the bearing support <NUM>, the bearing <NUM> and the hub <NUM>, and the outer ring <NUM> of the bearing <NUM> is fixedly connected to the hub <NUM>, so that the hub <NUM> can rotate relative to the frame <NUM> based on the fixed connection between the bearing support <NUM> and the frame <NUM>. The inner ring <NUM> of the bearing <NUM> is fixedly connected to the bearing support <NUM>, so as to realize the support function for the bearing <NUM> and other structures around the bearing <NUM> through the bearing support <NUM>. Since the wheel <NUM> further includes the hollow area <NUM> surrounded by the inner surface <NUM> of the bearing support <NUM>, the wheel <NUM> obtains the hollow appearance effect, simplifying the structure of the wheel <NUM>, and improving the appearance effect and the sense of science and technology of the wheel <NUM> and the scooter using the above wheel <NUM>.

Claim 1:
A wheel (<NUM>) for a scooter, adapted to be assembled and fitted with a frame (<NUM>) of the scooter, and the wheel (<NUM>) comprising:
a bearing support (<NUM>) comprising an inner surface (<NUM>) facing towards a rotation center of the wheel (<NUM>), the inner surface (<NUM>) defining a hollow area (<NUM>) surrounded by the inner surface (<NUM>);
a hub (<NUM>); and
at least one bearing (<NUM>), each bearing (<NUM>) comprising an outer ring (<NUM>) and an inner ring (<NUM>), the outer ring (<NUM>) being fixedly connected to the hub (<NUM>), the inner ring (<NUM>) being fixedly connected to the bearing support (<NUM>), and the frame (<NUM>) being fixedly connectable to the bearing support (<NUM>),
characterized in that,
the wheel (<NUM>) further comprises:
at least one bearing end cover (<NUM>), wherein the bearing end cover (<NUM>) is fixedly connected to the hub (<NUM>), and the bearing end cover (<NUM>) is hermetically fitted with a side surface of the bearing (<NUM>); and
a sealing member (<NUM>) arranged between the bearing end cover (<NUM>) and the bearing (<NUM>), wherein the sealing member (<NUM>) is hermetically fitted with the bearing end cover (<NUM>) and the side surface of the bearing (<NUM>).