Scooter frame

Abstract

The invention relates to the technical field of scooters, in particular to a scooter frame, which comprises a main frame used as a main support of a scooter; the front fork assembly is connected with the front end of the main frame and used for supporting a front wheel; the rear fork assembly is connected with the tail end of the main frame and used for supporting a rear wheel; the anti-rollover mechanism is arranged in the main frame and used for preventing the vehicle from rollover on a sharp turn or an uneven road surface, and the anti-rollover mechanism comprises a supporting frame connected with the main frame and used as a main support of the anti-rollover mechanism; the detection unit is used for detecting the vehicle body state; the adjusting unit is matched with the detection unit to adaptively adjust the state of the vehicle body and comprises a servo motor serving as a driving element of the adjusting unit; the two first lead screws are symmetrically distributed and rotationally arranged on the supporting frame, and balancing weights are arranged on the first lead screws in a threaded mode; the second lead screw is rotationally arranged on the supporting frame, and a sliding block is arranged on the second lead screw in a threaded mode; and the two groups of auxiliary supporting ball assemblies are symmetrically distributed.

Description

Technical Field

[0001] The present application relates to the technical field of mobility scooters, and in particular to a frame of a mobility scooter. Background Art

[0002] With the acceleration of urbanization and the growth of personal travel needs, electric scooters are becoming more and more popular as a convenient and environmentally friendly means of transportation. However, in actual use, especially when making sharp turns or driving on uneven roads, electric scooters are prone to rollover, which not only affects the driving experience, but also poses certain safety hazards.

[0003] In this regard, the present application proposes a scooter frame to solve the problem. Summary of the invention

[0004] The purpose of this application is to solve at least one of the technical deficiencies.

[0005] To this end, one purpose of the present application is to propose a scooter frame to solve the problems mentioned in the background technology and overcome the deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, an embodiment of one aspect of the present application provides a scooter frame, including: a main frame, used as the main support of the scooter; a front fork assembly, connected to the front end of the main frame, used to support the front wheel; a rear fork assembly, connected to the rear end of the main frame, used to support the rear wheel; an anti-rollover mechanism, arranged in the main frame, used to prevent the vehicle from rolling over in sharp turns or on uneven roads, including: a support frame, connected to the main frame, used as the main support of the anti-rollover mechanism; a detection unit, used to detect the state of the vehicle body; an adjustment unit, which cooperates with the detection unit to adaptively adjust the state of the vehicle body, including: a servo motor, used as a driving element of the adjustment unit; two symmetrically distributed first screws, both The rotatable arrangement is on the support frame, and the first screw rod is threadedly provided with a counterweight block; the second screw rod is rotatably arranged on the support frame, and the second screw rod is threadedly provided with a slider; two groups of symmetrically distributed auxiliary support ball assemblies are used to dynamically adjust the vehicle state, and a single group of the auxiliary support ball assemblies includes: a sliding block, which is arranged on one side of the slider; a return spring, one end of which is installed on the support frame, and the other end is connected to the sliding block to provide a return force for the sliding block; a rack, and a gear meshing with it, and the rack is installed at the bottom of the sliding block; a connecting frame, which is installed on the gear, and a universal support ball is installed on the connecting frame; a transmission assembly, which is used for transmission between the first screw rod, the second screw rod and the servo motor.

[0007] Preferably, any of the above schemes is that two reinforcement rods and two side rods are installed at the bottom of the support frame; a support block is installed on one of the side rods, and the servo motor is installed on the support block; a guide rod is installed on the other side rod; a positioning rod is installed between the two side rods, and the gear and the connecting frame are rotatably set on the positioning rod.

[0008] Preferably, any of the above schemes is that two symmetrically distributed first limit rods are installed on the support frame, and the two counterweights are respectively slidably set on the two first limit rods; two symmetrically distributed second limit rods are also installed on the support frame, the sliding block is slidably set on the second limit rods, and the sliding block is slidably set on the second limit rods.

[0009] Preferably, the detection unit comprises: a sliding rod installed on a support frame; a sliding block, wherein two through holes are provided on the sliding block, wherein one of the through holes is slidably set on the sliding rod, and the other of the through holes is slidably set on the guide rod; two first springs are respectively installed at both ends of the sliding block, and the first springs are also installed on the support frame; an infrared displacement sensor is installed at the bottom of the support frame; and a detection plate is installed on the sliding block for cooperating with the infrared sensor.

[0010] Preferably, any of the above schemes is that the transmission assembly includes: two symmetrically distributed transmission rods, both of which are rotatably set on a support frame; a first bevel gear, and a second bevel gear meshing therewith, the first bevel gear is installed at the output end of the servo motor, and the second bevel gear is installed on one of the transmission rods; two driving gears, and a driven gear meshing therewith, the two driving gears are respectively installed on the two transmission rods, and the two driven gears are respectively installed on the two first screw rods; two first pulleys, respectively installed on the two transmission rods; a second pulley, installed on the second screw rod; two synchronous belts, respectively sleeved on the first pulley and the two second pulleys.

[0011] Preferably, any of the above solutions includes: the anti-rollover mechanism further comprising a central control element for receiving a feedback signal from the infrared displacement sensor and issuing instructions to the servo motor.

[0012] Preferably, any of the above schemes further comprises: a seat rod installed on the main frame for supporting the seat; and a support rod connecting the main frame and the seat tube to increase the rigidity of the structure.

[0013] Preferably, any of the above schemes is that the front fork assembly includes: a front connecting frame installed at the front end of the main frame; a front suspension arranged in the front connecting frame; a front shock absorber arranged between the front suspension and the front connecting frame; the rear fork assembly includes: a rear connecting frame installed at the rear end of the main frame; a rear suspension arranged in the rear connecting frame; and a rear shock absorber arranged between the rear suspension and the rear connecting frame.

[0014] Compared with the prior art, the advantages and beneficial effects of this application are: The detection unit composed of infrared displacement sensors and detection boards can monitor the changes in the vehicle body posture in real time. When the vehicle is detected to have a tendency to roll, the central control unit will respond immediately and start the servo motor to drive the adjustment unit to quickly adjust the position of the counterweight block, while driving the auxiliary support ball assembly to extend to provide additional support force to prevent the vehicle from rolling over and offset the rollover torque.

[0015] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 It is a three-dimensional schematic diagram according to an embodiment of the present application; Figure 2 A front-end schematic diagram according to an embodiment of the present application; Figure 3 This is a schematic diagram of the tail end according to an embodiment of the present application; Figure 4 A schematic diagram of an anti-rollover mechanism according to an embodiment of the present application; Figure 5 It is a partial schematic diagram of the anti-rollover mechanism according to an embodiment of the present application; Figure 6 This is a schematic diagram of the connection of a servo motor according to an embodiment of the present application; Figure 7 A schematic diagram of a detection unit according to an embodiment of the present application; Figure 8 This is a schematic diagram of a single set of supporting ball components according to an embodiment of the present application; Fig. 9 Schematic diagram of a transmission assembly according to an embodiment of the present application.

[0017] In the figure: 1, main frame, 2, front fork assembly, 21, front connecting frame, 22, front suspension frame, 23, front shock absorber, 3, rear fork assembly, 31, rear connecting frame, 32, rear suspension, 33, rear shock absorber, 4, anti-rollover mechanism, 41, support frame, 4101, side rod, 4102, guide rod, 4103, positioning rod, 4104, first limit rod, 4105, second limit rod, 42, detection unit, 4201, sliding rod, 4202, sliding block, 4203, first spring, 4204, infrared displacement sensor, 4205, detection plate, 43, adjustment unit, 4301, Servo motor, 4302, first screw rod, 4303, counterweight, 4304, second screw rod, 4305, slider, 44, support ball assembly, 4401, slide block, 4402, return spring, 4403, rack, 4404, gear, 4405, connecting frame, 4406, universal support ball, 45, transmission assembly, 4501, transmission rod, 4502, first bevel gear, 4503, second bevel gear, 4504, driving gear, 4505, driven gear, 4506, first pulley, 4507, second pulley, 4508, synchronous belt, 5, seat rod, 6, support rod. DETAILED DESCRIPTION

[0018] like Figures 1 to 9 As shown, a frame of a scooter comprises a main frame 1, a front fork assembly 2, a rear fork assembly 3, an anti-rollover mechanism 4, a seat rod 5 and a support rod 6.

[0019] Furthermore, the main frame 1 is used as the main support of the scooter; The front fork assembly 2 is connected to the front end of the main frame 1 and is used to support the front wheel, including: A front connecting frame 21 is installed at the front end of the main frame 1; The front suspension 22 is arranged in the front connecting frame 21; A front shock absorber 23 is provided between the front suspension 22 and the front connecting frame 21; The rear fork assembly 3 is connected to the rear end of the main frame 1 and is used to support the rear wheel, including: A rear connecting frame 31 is installed at the rear end of the main frame 1; The rear suspension 32 is arranged in the rear connecting frame 31; The rear shock absorber 33 is arranged between the rear suspension 32 and the rear connecting frame 31; The seat post 5 is used to support the seat; The support rod 6 connects the main frame 1 and the seat tube to increase the rigidity of the structure.

[0020] Furthermore, the anti-rollover mechanism 4 is arranged in the main frame 1 to prevent the vehicle from rolling over in sharp turns or on uneven roads, and includes: A support frame 41, connected to the main frame 1, serving as a main support for the anti-rollover mechanism 4; A detection unit 42, used for detecting the state of the vehicle body; The adjustment unit 43 cooperates with the detection unit 42 to adaptively adjust the vehicle body state, including: A servo motor 4301, serving as a driving element of the adjustment unit 43; Two symmetrically distributed first screw rods 4302 are both rotatably arranged on the support frame 41, and a counterweight block 4303 is threadedly arranged on each of the first screw rods 4302; A second screw rod 4304 is rotatably disposed on the support frame 41, and a slider 4305 is threadedly disposed on the second screw rod 4304; Two groups of symmetrically distributed auxiliary support ball assemblies 44 are used to dynamically adjust the vehicle state. A single group of the auxiliary support ball assemblies 44 includes: A sliding block 4401 is provided on one side of the sliding block 4305; A return spring 4402, one end of which is mounted on the support frame 41, and the other end of which is connected to the slide block 4401, to provide a return force for the slide block 4401; A rack 4403 and a gear 4404 meshing therewith, wherein the rack 4403 is installed at the bottom of the sliding block 4401; A connecting frame 4405 is mounted on the gear 4404. A universal support ball 4406 is mounted on the connecting frame 4405. The universal support ball 4406 is configured so that it can rotate freely, that is, it does not affect the free movement of the scooter after being put down. The transmission assembly 45 is used for transmission between the first screw rod 4302, the second screw rod 4304 and the servo motor 4301; The bottom of the support frame 41 is equipped with two reinforcement rods and two side rods 4101; A support block is installed on one of the side rods 4101, and the servo motor 4301 is installed on the support block; A guide rod 4102 is installed on the other side rod 4101; A positioning rod 4103 is installed between the two side rods 4101, and the gear 4404 and the connecting frame 4405 are both rotatably arranged on the positioning rod 4103; Two symmetrically distributed first limit rods 4104 are installed on the support frame 41, and the two counterweight blocks 4303 are slidably arranged on the two first limit rods 4104 respectively; The support frame 41 is further provided with two symmetrically distributed second limiting rods 4105, the slider 4305 is slidably disposed on the second limiting rods 4105, and the slide block 4401 is slidably disposed on the second limiting rods 4105; The detection unit 42 includes: A sliding rod 4201 is mounted on the support frame 41; A sliding block 4202, wherein two through holes are provided on the sliding block 4202, wherein one of the through holes is slidably disposed on the sliding rod 4201, and the other through hole is slidably disposed on the guide rod 4102, and the guide rod 4102 limits the movement trajectory of the sliding block 4202; Two first springs 4203 are respectively mounted on the two ends of the sliding block 4202, and the first springs 4203 are also mounted on the support frame 41; Infrared displacement sensor 4204, mounted at the bottom of the support frame 41; A detection board 4205 is mounted on the sliding block 4202 and is used to cooperate with the infrared sensor; When the slide bar 4201 is tilted (the slide bar 4201 is in sync with the tilt state of the main frame 1): The sliding block 4202 is subjected to a component force of gravity along the rod direction, Fg =m⋅g⋅sin(θ), where m is the mass of the sliding block 4202, g is the acceleration of gravity, and θ is the angle between the sliding rod 4201 and the horizontal plane; This component force will cause the slider 4305 to slide down along the rod; When the sliding block 4202 slides down, the first spring 4203 will be stretched or compressed to generate a restoring force, Fs = k⋅x, where k is the spring constant and x is the deformation of the spring; If Fg is greater than Fs, the sliding block 4202 will continue to slide down; if Fg is less than or equal to Fs, the sliding block 4202 will stop at a certain position.

[0021] When the slide bar 4201 is horizontal: When the sliding rod 4201 is horizontal, the component force Fg of gravity along the direction of the sliding rod 4201 is 0. At this time, the position of the sliding block 4202 is mainly determined by the state of the first springs 4203 on both sides. The first springs 4203 are pre-set to have a certain pre-tightening force. Then, when the sliding rod 4201 is in a horizontal position, the restoring force Fs of the first spring 4203 will pull the sliding block 4202 back to the middle position.

[0022] Note: There is only one infrared displacement sensor 4204, so the output direction of the servo motor 4301 is controlled by the distance between the detection plate 4205 and the infrared displacement sensor 4204, with the initial distance between the detection plate 4205 and the infrared displacement sensor 4204 as the reference. If it is greater than this distance, it will tilt toward the other side where the infrared displacement sensor 4204 is installed, and if it is less than this distance, it will tilt toward the side where the infrared displacement sensor 4204 is installed.

[0023] Furthermore, the transmission assembly 45 includes: Two symmetrically distributed transmission rods 4501 are both rotatably arranged on the support frame 41; A first bevel gear 4502 and a second bevel gear 4503 meshing therewith, wherein the first bevel gear 4502 is mounted on the output end of the servo motor 4301, and the second bevel gear 4503 is mounted on one of the transmission rods 4501; Two driving gears 4504 and driven gears 4505 meshing therewith, the two driving gears 4504 are respectively mounted on the two transmission rods 4501, and the two driven gears 4505 are respectively mounted on the two first screw rods 4302; Two first pulleys 4506 are respectively mounted on the two transmission rods 4501; A second pulley 4507 is mounted on the second screw rod 4304; Two synchronous belts 4508 are respectively mounted on the first pulley 4506 and the two second pulleys 4507; The anti-rollover mechanism 4 also includes a central control element for receiving a feedback signal from the infrared displacement sensor 4204 and issuing instructions to the servo motor 4301 .

[0024] A walking vehicle frame, the working principle of which is as follows: When the scooter is tilted: The main frame 1 is tilted, and the sliding rod 4201 is in the same state as the main frame 1, and is also in a tilted state. At this time, the sliding block 4202 is affected by the component force of gravity along the rod direction, and moves toward the tilted end. The movement of the sliding block 4202 drives the detection plate 4205 installed thereon to move synchronously, thereby changing the distance between the infrared displacement sensor 4204 and the detection plate 4205; When the sliding block 4202 is stationary at a certain position on the sliding rod 4201, the displacement value is fed back to the central control element in real time through the infrared displacement sensor 4204, and the central control element issues instructions to the servo motor 4301; The first bevel gear 4502 is driven to rotate by the servo motor 4301, and the first bevel gear 4502 drives the second bevel gear 4503 meshing therewith to rotate, and then drives the transmission rod 4501 fixed therewith to rotate, and the other transmission rod 4501 and the second screw rod 4304 are driven to rotate through the mutual connection transmission between the first pulley 4506, the second pulley 4507 and the synchronous belt 4508, and the second screw rod 4304 has the same rotation direction as the transmission rod 4501. At the same time, the transmission rod 4501 drives the driving gear 4504 to rotate, and the driving gear 4504 drives the driven gear 4505 meshing therewith to rotate, thereby driving the first screw rod 4302 to rotate, and the rotation direction of the first screw rod 4302 is opposite to that of the transmission rod 4501. The counterweight 4303 is driven to move by the first screw rod 4302. Under the output direction of the servo motor 4301, the direction of movement of the counterweight 4303 is opposite to the inclination direction of the sliding rod 4201. When the first screw rod 4302 rotates, the second screw rod 4304 also rotates. The slider 4305 is driven to move by the second screw rod 4304. The movement direction of the slider 4305 is opposite to the movement direction of the counterweight 4303. The movement of the slider 4305 will drive the sliding block 4401 to move. The sliding block 4401 drives the rack 4403 installed at the bottom thereof to move. The rack 4403 drives the gear 4404 meshing therewith to rotate. The gear 4404 drives the connecting frame 4405 to make a circular motion, thereby driving the support ball to move so that the support ball contacts the ground. While balancing the center of gravity, auxiliary support is provided through the auxiliary support wheels. When the body of the contemporary scooter is stable and returns to normal, the sliding rod 4201 is in a horizontal state. At this time, under the action of the first spring 4203, the sliding block 4202 is driven to reset. Through the cooperation of the infrared displacement sensor 4204 and the detection plate 4205, feedback is given to the central control element, and the servo motor 4301 is instructed through the central control element to drive the sliding block 4305 and the counterweight block 4303 to reset. When the sliding block 4305 is reset, under the action of the reset spring 4402, the sliding block 4401 is driven to reset, and then the universal support ball 4406 is driven to reset.

Claims

1. A scooter frame, characterized in that: include: The main frame, which serves as the main support of the mobility scooter; A front fork assembly connected to the front end of the main frame and used to support the front wheel; A rear fork assembly, connected to the rear end of the main frame, for supporting the rear wheel; The anti-rollover mechanism is installed in the main frame to prevent the vehicle from rolling over in sharp turns or on uneven roads, including: A support frame, connected to the main frame, serves as the main support for the anti-rollover mechanism; A detection unit, used for detecting the state of the vehicle body; The adjustment unit cooperates with the detection unit to adaptively adjust the vehicle body state, including: A servo motor as a drive element for the regulating unit; Two symmetrically distributed first screw rods are both rotatably arranged on the support frame, and counterweight blocks are threadedly arranged on the first screw rods; A second screw rod is rotatably arranged on the support frame, and a slider is threadedly arranged on the second screw rod; Two groups of symmetrically distributed auxiliary support ball assemblies are used to dynamically adjust the vehicle state. A single group of the auxiliary support ball assemblies includes: A sliding block, arranged on one side of the slider; A return spring, one end of which is mounted on the support frame and the other end of which is connected to the slide block to provide a return force for the slide block; A rack and a gear meshing therewith, wherein the rack is mounted at the bottom of the sliding block; A connecting frame is mounted on the gear, and a universal support ball is mounted on the connecting frame; The transmission assembly is used for transmission between the first lead screw, the second lead screw and the servo motor.

2. The scooter frame according to claim 1, characterized in that: Two reinforcement bars and two side bars are installed at the bottom of the support frame; A support block is mounted on one of the side rods, and the servo motor is mounted on the support block; A guide rod is installed on the other side rod; A positioning rod is installed between the two side rods, and the gear and the connecting frame are both rotatably arranged on the positioning rod.

3. The scooter frame according to claim 2, characterized in that: Two symmetrically distributed first limit rods are installed on the support frame, and the two counterweight blocks are slidably arranged on the two first limit rods respectively; Two second limiting rods which are symmetrically distributed are also installed on the support frame, the sliding block is slidably arranged on the second limiting rods, and the sliding block is slidably arranged on the second limiting rods.

4. The scooter frame according to claim 3, characterized in that: The detection unit comprises: A sliding rod mounted on the support frame; A sliding block, wherein two through holes are provided on the sliding block, one of the through holes is slidably arranged on the sliding rod, and the other through hole is slidably arranged on the guide rod; Two first springs are respectively mounted on two ends of the sliding block, and the first springs are also mounted on the support frame; Infrared displacement sensor, installed at the bottom of the support frame; The detection plate is installed on the sliding block and is used to cooperate with the infrared sensor.

5. The scooter frame according to claim 3, characterized in that: The transmission assembly comprises: Two symmetrically distributed transmission rods are both rotatably arranged on the support frame; A first bevel gear and a second bevel gear meshing therewith, wherein the first bevel gear is mounted on the output end of the servo motor and the second bevel gear is mounted on one of the transmission rods; Two driving gears and driven gears meshing therewith, the two driving gears are respectively mounted on two transmission rods, and the two driven gears are respectively mounted on two first screw rods; Two first pulleys are respectively mounted on two transmission rods; A second pulley is mounted on the second screw rod; Two synchronous belts are respectively sleeved on the first pulley and the two second pulleys.

6. The scooter frame according to claim 1, characterized in that: The anti-rollover mechanism also includes a central control element for receiving feedback signals from the infrared displacement sensor and issuing instructions to the servo motor.

7. The scooter frame according to claim 1, characterized in that: Also includes: A seat post, mounted on the main frame, for supporting the seat; A support rod connects the main frame and the seat tube to increase the rigidity of the structure.

8. The scooter frame according to claim 1, characterized in that: The front fork assembly comprises: A front connecting frame, mounted on the front end of the main frame; Front suspension, located in the front connecting frame; Front shock absorber, located between the front suspension and the front connecting frame; The rear fork assembly comprises: The rear connecting frame is installed at the rear end of the main frame; The rear suspension is located in the rear connecting frame; The rear shock absorber is arranged between the rear suspension and the rear connecting frame.

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