An electric balancing vehicle

Abstract

The technical field of electric balance vehicles of the present invention provides an electric balance vehicle, comprising a first vehicle body, a second vehicle body, and wheels arranged on the vehicle bodies, wherein a rotating mechanism is provided between the first vehicle body and the second vehicle body; the rotating mechanism comprises at least two columnar threaded fasteners, and a slide groove or movable hole provided on the vehicle body; the slide groove or movable hole has at least a circular arc surface; one end of the threaded fastener is connected to one of the vehicle bodies, and the other end of the threaded fastener is placed in the slide groove or movable hole on the other vehicle body; the first vehicle body and the second vehicle body are rotated by the circumferential movement of the threaded fastener along the circular arc surface; by adopting standard parts (threaded fasteners) to replace the rotating shaft, the production cost and maintenance cost can be reduced, and the service life can be extended.

Description

Technical Field

[0001] The present invention relates to the technical field of electric balancing vehicles, and in particular to an electric balancing vehicle using a standard rotating shaft mechanism. Background Art

[0002] Electric balancing scooters, also known as somatosensory scooters, thinking scooters, and position-sensing scooters, are primarily available on the market in two types: unicycles and two-wheelers. Their operating principle is based on a fundamental principle known as "dynamic stabilization." They utilize internal gyroscopes and accelerometers to detect changes in the scooter's posture. A servo control system precisely drives the motor to make corresponding adjustments to maintain balance. They are a new, environmentally friendly product used by modern people as a means of transportation and for leisure and entertainment.

[0003] Currently, two-wheeled self-balancing scooters on the market utilize two wheels fixed side by side. These two wheels are supported by batteries, driven by brushless motors, and controlled by a single-chip microcomputer. A posture sensor collects angular velocity and angle signals, which coordinately control the balance of the vehicle. Simply by shifting the body's center of gravity, the vehicle can start, accelerate, decelerate, and stop. For example, Chinese patent application number 2015204076029 discloses a self-balancing scooter whose two wheels are connected by a rotating mechanism consisting of a single bearing and a sleeve mounted on the bearing. Because a single bearing is used, the bearing's diameter is relatively large to ensure strength. This non-standard bearing requires a custom mold, which not only increases production costs but also, because there is only one bearing, the stress distribution between the sleeve and the bearing is concentrated on the contact surface. This leads to wear over time, making replacement and repair difficult and costly (as this is a non-standard component). Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defect that the rotating structure of the above-mentioned existing electric balancing vehicle uses non-standard parts, and to provide an electric balancing vehicle that uses standard parts as the rotating mechanism, which can reduce production costs and maintenance costs while extending service life.

[0005] To achieve the above-mentioned objectives, the present invention is implemented through the following technical solutions: an electric balancing vehicle, comprising a first vehicle body, a second vehicle body, and wheels provided on the vehicle bodies, a rotation mechanism is provided between the first vehicle body and the second vehicle body; the rotation mechanism comprises at least two columnar threaded fasteners, and a slide groove or movable hole provided on the vehicle body; the slide groove or movable hole has at least a circular arc surface; one end of the threaded fastener is connected to one of the vehicle bodies, and the other end of the threaded fastener is placed in the slide groove or movable hole on the other vehicle body; the first vehicle body and the second vehicle body are rotated by the circumferential movement of the threaded fastener along the circular arc surface.

[0006] A further preferred embodiment of the present invention is that: the first vehicle body and the second vehicle body are each provided with a connecting end; the threaded fastener is passed through the connecting end of one of the vehicle bodies, and the slide groove or movable hole is provided on the connecting end of the other vehicle body.

[0007] A further preferred solution of the present invention is that the threaded fastener passes through the connecting end of the first body, an annular slide groove is provided on the connecting end of the second body, and the arc surface is located on the annular inner wall and the annular outer wall of the slide groove.

[0008] A further preferred solution of the present invention is that the threaded fastener passes through the connecting end of the first body, and the connecting end of the second body is provided with an elongated arc-shaped movable hole, and the arc surface is located on the inner and outer walls of the movable hole.

[0009] A further preferred embodiment of the present invention is that: both the first body and the second body are provided with screw holes for installing threaded fasteners and long arc-shaped movable holes for allowing the threaded fasteners to move; the threaded fasteners are provided in two groups, one end of one group of threaded fasteners is connected to the screw holes on the first body, and the other end is placed in the movable holes on the second body, and the other end of the threaded fasteners in the other group is connected to the screw holes on the second body, and the other end is placed in the movable holes on the first body.

[0010] A further preferred embodiment of the present invention is as follows: on the same vehicle body, the movable holes include two groups, one group of movable holes corresponds to a larger radius, and the other group of movable holes corresponds to a smaller radius; the group of movable holes with a larger radius is distributed on the outer circumference, and the other group of movable holes with a smaller radius is distributed on the inner circumference.

[0011] A further preferred solution of the present invention is that the central axes corresponding to all the arc surfaces on the slide groove or the movable hole are collinear with the axis of the wheel.

[0012] A further preferred solution of the present invention is that a concave and convex portion for positioning is provided between the first vehicle body connecting end and the second vehicle body connecting end.

[0013] A further preferred solution of the present invention is that a convex portion is provided on the connecting end of the first vehicle body, and a concave portion is provided on the connecting end of the second vehicle body.

[0014] A further preferred solution of the present invention is that the other end of the threaded fastener is sleeved with a wear-resistant sleeve, and the threaded fastener is slidably connected to the arc surface through the wear-resistant sleeve.

[0015] In summary, the present invention has the following beneficial effects: Multiple standard components—threaded fasteners—are provided in conjunction with a slot or movable hole to replace the existing rotational connection method of a bearing and sleeve. The threaded fasteners in this solution achieve rotation between the two wheels by sliding circumferentially within the slot or movable hole. The use of standard components reduces production costs. Furthermore, the presence of multiple threaded fasteners evenly distributes the pressure applied to each threaded fastener, thereby reducing friction between contact surfaces and extending service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an exploded view of the balance vehicle described in Example 1.

[0017] Figure 2 It is a structural schematic diagram of the first vehicle body in Example 1.

[0018] Figure 3 It is a structural schematic diagram of the second vehicle body in Example 1.

[0019] Figure 4 It is a front view of the first vehicle body in Example 1 along the axis of the axle.

[0020] Figure 5 It is a front view of the second vehicle body in Example 1 along the axial direction of the axle.

[0021] Figure 6 This is a top view of the balance vehicle described in Example 1.

[0022] Figure 7 yes Figure 6 A cross-sectional view along the AA direction.

[0023] Figure 8 It is a structural schematic diagram of the second vehicle body in Example 2.

[0024] Figure 9 and Figure 10 These are front views of the first vehicle body and the second vehicle body in Example 3 along the axial direction of the axle.

[0025] Figure 11 and Figure 12 These are front views of the first vehicle body and the second vehicle body in Example 3 along the axial direction of the axle.

[0026] in:

[0027] 100, first vehicle body; 110, convex portion; 200, second vehicle body; 210, concave portion; 300, threaded fastener; 310, wear-resistant sleeve; 400, arc surface; 410, slide groove; 420, movable hole. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings.

[0029] This embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

[0030] Example 1:

[0031] like Figure 1-3 As shown, this embodiment provides an electric balancing vehicle, comprising a first vehicle body 100, a second vehicle body 200, and wheels provided on the vehicle bodies. A rotation mechanism is provided between the first vehicle body 100 and the second vehicle body 200, and the rotation mechanism comprises at least two columnar threaded fasteners 300, and a slide groove 410 or a movable hole 420 provided on the vehicle body. The slide groove 410 or the movable hole 420 has at least one arc surface 400, one end of the threaded fastener 300 is connected to one of the vehicle bodies, and the other end of the threaded fastener 300 is placed in the slide groove 410 or the movable hole 420 on the other vehicle body. The first vehicle body 100 and the second vehicle body 200 are rotated by the threaded fastener 300 moving (rolling or sliding) along the circumferential direction of the arc surface 400.

[0032] In this embodiment, the first body 100 and the second body 200 are connected together via a rotating mechanism, and the two can rotate relative to each other (within a certain angle). Each of the first body 100 and the second body 200 has a connecting end. A threaded fastener 300 extends through the connecting end of the first body 100, and a slide groove 410 or a movable hole 420 is provided on the connecting end of the second body 200. The first body 100 and the second body 200 are symmetrical in appearance. The body consists of an upper shell and a lower shell. The axle and wheels are mounted on one side of the body, and the connecting end is on the other side of the body. In this embodiment, the connecting end is provided on the upper shell and integrally formed with it. Alternatively, the connecting end can be provided on the lower shell; or provided on a connecting member that is connected to the upper or lower shell; or, in the case of a body with a frame, the connecting end can be provided on the frame and then enclosed by the upper and lower shells outside the frame. The connecting end can be flexibly arranged depending on the actual vehicle model, and this is merely an example.

[0033] The threaded fasteners 300 are bolts, screws, or studs. This embodiment uses three bolts as an example. The threaded fasteners 300 extend from the connecting end of the first vehicle body 100. An annular groove 410 is provided on the connecting end of the second vehicle body 200. Arc surfaces 400 are located on the inner and outer annular walls of the groove 410. In other words, within the annular groove 410, the inner and outer annular walls (which have concentric cross-sections) form the arc surfaces 400. Furthermore, the central axis corresponding to each arc surface 400 is collinear with the axis of the wheel.

[0034] In order to increase the connection strength between the bolt and the connection end without increasing the production cost, the connection end adopts a thin-walled structure of multi-layer plates and is provided with an internal thread column integrally formed therewith (see Figure 4 ), which can save materials while ensuring the connection strength.

[0035] To facilitate installation, the bolts can be accurately and quickly inserted through the screw holes of the first body 100 and into the annular groove 410 of the second body 200. A concave-convex portion 110 for positioning is provided between the connecting end of the first body 100 and the connecting end of the second body 200. Specifically, a convex portion 110 is provided on the end surface of the connecting end of the first body 100, and a concave portion 210 (or groove) is provided on the end surface of the connecting end of the second body 200. The convex portion 110 and the concave portion 210 are both circular and of matching size. Before installing the bolts, the connecting end of the first body 100 and the connecting end of the second body 200 are placed opposite each other, and the convex portion 110 and the concave portion 210 are aligned so that the convex portion 110 is inserted into the concave portion 210. In this way, after inserting the bolts, the annular groove 410 can be aligned to allow the bolts to be quickly inserted into the annular groove 410. In this embodiment, the concave portion 210 is located in the middle of the annular groove 410.

[0036] In order to reduce the friction resistance between the end of the bolt and the arc surface 400, a wear-resistant sleeve 310 is sleeved on the other end (i.e., the end) of the bolt. The bolt is slidingly connected to the arc surface 400 through the wear-resistant sleeve 310, and lubricating oil is applied on the arc surface 400 to reduce sliding friction resistance.

[0037] To prevent the bolt from disengaging from the annular slot 410 and to limit its range of motion within the slot 410, the slot 410 has an oblong, arcuate hole on its bottom wall for limiting the rotation of the threaded fastener 300. The end of the bolt passes through the oblong hole and is threadedly connected to a washer, which prevents the bolt from disengaging from the annular slot 410. (Alternatively, the bolt can be installed in reverse, with the nut head remaining in the second body 200 and the threaded end of the bolt threadedly connected to the connection end of the first body 100.)

[0038] Specifically, there are three long arc holes, which are evenly distributed around the bottom wall of the annular chute 410 (see Figure 5 ), each bolt is respectively provided with an elongated arc-shaped hole, and the end of each bolt is threadedly connected to the same (circular) gasket (with different screw holes thereon) to maintain the spacing between each threaded fastener 300.

[0039] Since the gasket rotates together with the bolt when it rotates, in order to ensure that the gasket can rotate with the center of the circle as the axis, a positioning bolt is provided on the connection end between the first body 100 and the second body 200. The positioning bolt passes through the convex portion 110 on the first body 100 and the concave portion 210 on the second body 200 in sequence (see FIG. Figure 7 ) and is threadedly connected to the screw hole at the center of the gasket, so that the gasket can drive the positioning bolt and make a circular motion with the axis of the positioning bolt as the center of the circle. At the same time, the positioning bolt can also provide a certain support for the annular slide groove 410. (The positioning screw can be replaced with a pin, and the pin is only partially embedded in the back of the recess 210)

[0040] Example 2:

[0041] like Figure 8 , Example 2 shows an electric balancing vehicle in another embodiment. The main difference between this embodiment and Example 1 is that: in this embodiment, an elongated arc-shaped movable hole 420 is provided on the connecting end of the second body 200, and the movable hole 420 passes through the shell wall of the connecting end, and the arc surface 400 is located on the inner and outer walls of the movable hole 420, that is, the inner and outer walls of the movable hole 420 form the arc surface 400. The threaded fastener 300 (bolt) is passed through the connecting end of the first body 100, and the end passes through the movable hole 420 and is connected to the gasket. The long arc-shaped movable hole 420 replaces the annular slide groove 410 and the long arc-shaped hole in Example 1, so that the connecting end of the second body 200 is stronger. The remaining structures and features are the same as those in Example 1 and will not be described in detail here.

[0042] Example 3:

[0043] like Figure 9 and 10As shown, Example 3 shows a third embodiment of an electric balancing vehicle. The main difference between this embodiment and Example 1 is that in this embodiment, both the first body 100 and the second body 200 are provided with screw holes for installing threaded fasteners 300 and long arc-shaped movable holes 420 for allowing the threaded fasteners 300 to move. There are two groups of threaded fasteners 300. One group of threaded fasteners 300 has one end connected to the screw holes on the first body 100 and the other end placed in the movable holes 420 on the second body 200. The other group of threaded fasteners 300 has one end connected to the screw holes on the second body 200 and the other end placed in the movable holes 420 on the first body 100. On the same body, the screw holes and movable holes 420 are arranged alternately. Correspondingly, a gasket is also provided. The remaining structures and features are the same as those in Example 2 and will not be described in detail here.

[0044] The movable holes 420 in Example 2 are only arranged on the second vehicle body 200. Compared with Example 2, the alternating arrangement of the screw holes and the movable holes 420 in Example 3 avoids the assembly errors of the screw holes or the movable holes 420 from being concentrated on the same vehicle body, can compensate for the assembly errors, balance the force, and extend the service life.

[0045] Example 4:

[0046] like Figure 11 and 12 As shown, Example 4 shows a fourth implementation scheme of an electric balancing vehicle. The main difference between this example and Example 3 is that: in this example, the movable holes 420 on the same vehicle body include two groups, one group of movable holes 420 corresponds to a large radius, and the other group of movable holes 420 corresponds to a small radius; the one group of movable holes 420 with a large radius is distributed on the outer circumference, and the other group of movable holes 420 with a small radius is distributed on the inner circumference.

[0047] The remaining structures and features are the same as those in Example 3 and will not be described in detail here.

[0048] This arrangement increases the number of screws, and a single screw bears less weight, so the friction becomes smaller, thereby reducing friction and extending the service life.

Claims

1. An electric balancing vehicle, comprising a first vehicle body, a second vehicle body, and wheels provided on the vehicle bodies, characterized in that: A rotation mechanism is provided between the first and second vehicle bodies. The rotation mechanism includes at least two columnar threaded fasteners and a slide groove or movable hole provided on the vehicle bodies. The slide groove or movable hole has at least one arc surface. One end of the threaded fastener is connected to one of the vehicle bodies, and the other end of the threaded fastener is placed in the slide groove or movable hole on the other vehicle body. The first vehicle body and the second vehicle body are connected together by a rotating mechanism, and the two can rotate relative to each other within a certain angle; The first vehicle body and the second vehicle body are rotated by the threaded fastener moving along the circumferential direction of the arc surface.

2. The electric balancing vehicle according to claim 1, characterized in that: The first vehicle body and the second vehicle body are both provided with a connecting end; the threaded fastener is provided through the connecting end of one of the vehicle bodies, and the slide groove or movable hole is provided on the connecting end of the other vehicle body.

3. The electric balancing vehicle according to claim 2, characterized in that: The threaded fastener is passed through the connecting end of the first body, and an annular sliding groove is provided on the connecting end of the second body. The arc surface is located on the annular inner wall and the annular outer wall of the sliding groove.

4. The electric balancing vehicle according to claim 2, characterized in that: The threaded fastener is passed through the connecting end of the first body, and a long arc-shaped movable hole is provided on the connecting end of the second body. The arc surface is located on the inner and outer walls of the movable hole.

5. The electric balancing vehicle according to claim 2, characterized in that: The first and second car bodies are both provided with screw holes for installing threaded fasteners and long arc-shaped movable holes for allowing the threaded fasteners to move; the threaded fasteners are provided in two groups, one end of one group of threaded fasteners is connected to the screw holes on the first car body, and the other end is placed in the movable holes on the second car body, and the other end of the threaded fasteners in the other group is connected to the screw holes on the second car body, and the other end is placed in the movable holes on the first car body.

6. The electric balancing vehicle according to claim 5, characterized in that: On the same vehicle body, the movable holes include two groups, one group of movable holes corresponds to a larger radius, and the other group of movable holes corresponds to a smaller radius; the group of movable holes with a larger radius is distributed on the outer circumference, and the other group of movable holes with a smaller radius is distributed on the inner circumference.

7. The electric balancing vehicle according to claim 1, characterized in that: The central axes corresponding to all the arc surfaces on the sliding groove or the movable hole are collinear with the axis of the wheel.

8. The electric balancing vehicle according to claim 2, characterized in that: A concave and convex portion for positioning is provided between the first vehicle body connecting end and the second vehicle body connecting end.

9. The electric balancing vehicle according to claim 8, characterized in that: A convex portion is provided on the connecting end of the first vehicle body, and a concave portion is provided on the connecting end of the second vehicle body.

10. The electric balancing vehicle according to claim 1, characterized in that: The other end of the threaded fastener is sleeved with a wear-resistant sleeve, and the threaded fastener is slidably connected to the arc surface through the wear-resistant sleeve.

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