Patent ID: 12187375

DETAILED DESCRIPTION

Reference will be made in detail to embodiments of the present disclosure, and the examples of the embodiments are illustrated in the drawings. The embodiments described herein with reference to drawings are illustrative, and intended to explain the present disclosure. The embodiments shall not be construed to limit the present disclosure.

A frame100according to embodiments of the present disclosure is described below with reference toFIG.1.

The frame100according to the embodiments of the present disclosure includes a first longitudinal beam1, a second longitudinal beam2, a head tube3and a first cross beam4. A first end of the first longitudinal beams1and a first end of the second longitudinal beams2are both coupled to the head tube3. The first cross beam4has a first end coupled to the first longitudinal beam1and a second end coupled to the second longitudinal beam2. The first longitudinal beam1is divided into a first front tube section11and a first rear tube section12by the first cross beam4, the second longitudinal beam2is divided into a second front tube section21and a second rear tube section22by the first cross beam4, and the first and second rear tube sections12,22form a rear fork of a mobility scooter.

In the frame100according to the embodiments of the present disclosure, the first and second rear tube sections12,22in the first and second longitudinal beams1,2are arranged to form the rear fork of the mobility scooter; that is, a rear wheel of the mobility scooter may be directly mounted to the frame100, thereby omitting an assembly step of the rear fork during assembly of the mobility scooter, and achieving high assembly efficiency of the mobility scooter. Moreover, the first and second rear tube sections12,22forming the rear fork in the frame100are integrally formed with the first and second front tube sections11,21respectively, such that the frame100has high manufacturing precision and reliable strength.

For easy understanding, an arrow A inFIG.1shows a front-rear direction of the frame100according to the embodiments of the present disclosure, and an arrow B inFIG.1shows a left-right direction of the frame100according to the embodiments of the present disclosure.

In some embodiments, the first and second longitudinal beams1,2are each a bent tube.

In at least one embodiment, the first and second longitudinal beams1,2are each formed by bending a standard tube. The standard tube may also be referred to as a national standard steel tube, which is produced by piercing a steel ingot or a solid tube blank into a shell, and then undergoing hot rolling, cold rolling or cold drawing operations. The first and second longitudinal beams1,2thus produced have high strength.

In some embodiments, the first front tube section11includes a first horizontal tube section111, a first bent tube section112and a first inclined tube section113arranged sequentially, and the second front tube section21includes a second horizontal tube section211, a second bent tube section212and a second inclined tube section213arranged sequentially. The first and second horizontal tube sections111,211are parallel to each other, and the first and second inclined tube sections113,213form an angle and are both coupled to the head tube3. Thus, the first and second horizontal tube sections111,211serve as a main support for receiving a battery compartment assembly of a scooter.

As illustrated inFIG.1, the first and second horizontal tube sections111,211as well as the first and second inclined tube sections113,213are each a straight tube, the first and second horizontal tube sections111,211both extend in the front-rear direction, the first inclined tube section113extends upwards to the front left relative to the first horizontal tube section111, and the second inclined tube section213extends upwards to the front right relative to the second horizontal tube section211. An upper end of the first inclined tube section113and an upper end of the second inclined tube section213are close to each other in the left-right direction and are fixedly welded to an outer side wall of the head tube3.

In some embodiments, the frame100further includes a second cross beam5, and the second cross beam couples the first and second inclined tube sections113,213.

Thus, the first and second cross beams4,5as well as the head tube3jointly realize the coupling of the first and second longitudinal beams1,2, and the first and second longitudinal beams1,2in the frame100have higher and more reliable coupling strength.

In some embodiments, the first cross beam4has a first end welded to an inner side of the first longitudinal beam1and a second end welded to an inner side of the second longitudinal beam2.

By welding the first and second cross beams4,5between the first and second longitudinal beams1,2, the first and second cross beams4,5and the first and second longitudinal beams1,2have coupling positions easier to confirm, and the frame100has higher manufacturing precision.

In at least one embodiment, the first and second cross beams4,5are coupled to the first and second longitudinal beams1,2with a carbon-dioxide arc welding operation. As illustrated inFIG.1, on a projection plane perpendicular to the left-right direction, projections of the first and second cross beams4,5coincide with a projection of the first longitudinal beam1; that is, the first and second cross beams4,5are hidden between the first and second longitudinal beams1,2. Thus, the frame100has a compact structure and a higher aesthetic appearance.

In some embodiments, as illustrated inFIG.1, the first and second cross beams4,5are both made of round tubes which are standard steel tubes. Thus, the first and second cross beams4,5have stress strength which is basically consistent in all directions, with reliable strength.

In some embodiments, the first cross beam, the second cross beam as well as the first and second horizontal tube sections111,211are provided with mounting holes configured to mount a battery compartment assembly of the mobility scooter.

In at least one embodiment, welding nuts are welded on the first and second horizontal tube sections111,211as well as the first cross beam4, the mounting holes are configured as threaded holes in the welding nuts, and the mounting holes in the second cross beam5are configured as unthreaded holes. A rear end cover in the battery compartment assembly is coupled to the first cross beam4through the mounting holes in the first cross beam4, a battery compartment in the battery compartment assembly is coupled to the first and second longitudinal beams1,2through the mounting holes in the first and second horizontal tube sections111,211, and a front end cover in the battery compartment assembly is coupled to the second cross beam through the mounting holes in the second cross beam.

In some embodiments, the first front tube section11has a front end welded to the outer side wall of the head tube3, the second front tube section21has a front end welded to the outer side wall of the head tube3, and the first and second front tube sections11,21are symmetrically arranged relative to a vertical plane where an axis of the head tube3is located.

As illustrated inFIG.1, the head tube3is formed by a profile machining process, and has a cylindrical outer side wall. The front ends of the first and second front tube sections11,21are both coupled to the outer side wall of the head tube3with a carbon-dioxide arc welding operation, such that the first and second longitudinal beams1,2are conveniently coupled to the head tube3, and a junction thereof has high strength.

In some embodiments, the first and second front tube sections11,21are each a round tube, and the first and second rear tube sections12,22may each have a plate-like structures formed by pressing a round tube. Thus, the first and second front tube sections11,21have basically consistent stress strength in all directions, with reliable strength.

Or, the first and second front tube sections11,21may each be a square or rectangular tube.

As illustrate inFIG.2, a mobility scooter200according to embodiments of a second aspect of the present disclosure includes a frame100according to any of the above-mentioned embodiments.

The mobility scooter200according to the embodiments of the present disclosure has the same technical advantages as the frame100according to the above-mentioned embodiments, which are not repeated herein.

In some embodiments, the mobility scooter200may be configured as an electric scooter.

In the description of the present disclosure, it is to be understood that terms such as “center”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “anticlockwise”, “axial”, “radial”, and “circumferential” should be construed to refer to the orientation as illustrated in the drawings. These relative terms are for convenience of description and do not require that the present disclosure be constructed or operated in a particular orientation, thus cannot be construed to limit the present disclosure.

In addition, the terms such as “first” and “second” are used herein for purposes of description and are not intended to indicate or imply relative importance or significance or to imply the number of indicated technical features. Thus, the feature defined with “first” and “second” may include at least one of this feature explicitly or implicitly. In the description of the present disclosure, “a plurality of” means at least two, for example, two, three, or the like, unless specifically limited otherwise.

In the present disclosure, unless specified or limited otherwise, the terms “mounted”, “coupled”, “coupled”, and “fixed” and the like are used broadly, and may be, for example, fixed connections, detachable connections, or integral connections; may also be mechanical or electrical connections or communication with each other; may also be direct connections or indirect connections via intervening structures; may also be communication or an interaction relationship of two elements. The above terms can be understood by those skilled in the art according to specific situations.

In the present disclosure, unless specified or limited otherwise, a structure in which a first feature is “on” or “below” a second feature may include an embodiment in which the first feature is in direct contact with the second feature, and may also include an embodiment in which the first feature and the second feature are contacted via an additional feature formed therebetween. Furthermore, a first feature “on,” “above,” or “on top of” a second feature may include an embodiment in which the first feature is right or obliquely “on,” “above,” or “on top of” the second feature, or just means that the first feature is at a height higher than that of the second feature; while a first feature “below,” “under,” or “on bottom of” a second feature may include an embodiment in which the first feature is right or obliquely “below,” “under,” or “on bottom of” the second feature, or just means that the first feature is at a height lower than that of the second feature.

In the present disclosure, terms “an embodiment”, “some embodiments”, “example”, “specific example” or “some examples” means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In the specification, the schematic expressions to the above-mentioned terms are not necessarily referring to the same embodiment or example. Furthermore, the described particular features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples. Furthermore, those skilled in the art may combine different embodiments or examples and features in different embodiments or examples described in the specification, without mutual contradictions.

Although embodiments of the present disclosure have been shown and illustrated, it shall be understood that the above-mentioned embodiments are exemplary and not construed as limitations to the present disclosure. Various changes, modifications, alternatives and variants within the scope of the present disclosure may be made by those skilled in the art.