Walking-instead-of-walk vehicle

Abstract

The scooter comprises a driving wheel assembly, a supporting wheel assembly and a longitudinal supporting beam, one end of the longitudinal supporting beam is connected with the driving wheel assembly, and the other end of the longitudinal supporting beam is connected with the supporting wheel assembly; the longitudinal supporting beam is constructed to be a chassis framework of the scooter, the driving wheel assembly and the supporting wheel assembly are located on the two sides of the transverse section of the longitudinal supporting beam respectively and connected and supported through a strip-shaped structure formed by the longitudinal supporting beam, and due to the design of the strip-shaped structure of the longitudinal supporting beam, the overall structure of the scooter is simplified; and the weight of the vehicle is effectively reduced. Compared with a traditional chassis framework, bloating and redundancy are avoided through the design, so that the vehicle is lighter and more convenient to carry and operate.

Description

Technical Field

[0001] The present application relates to a vehicle for commuting. Background Art

[0002] A mobility vehicle is a means of transportation designed to facilitate people's travel. It usually has the characteristics of easy operation, moderate speed, high safety, etc. In different environments and needs, the types and functions of mobility vehicles are also different.

[0003] In order to meet the needs of people of different heights, some mobility scooters for the elderly are equipped with a seat lifting function to facilitate users to get on and off the vehicle. In order to realize the seat lifting function, a lifting device with a folding function will be installed between the seat and the chassis of the mobility scooter. When this lifting device is actually used, there will be a problem of narrow available space under the seat during the seat lifting process, and the chassis of some mobility scooters generally adopt a plate structure. This plate-like chassis has the problems of heavy weight and bloated structure, and will also affect the space utilization on the pedal side of the mobility scooter. Summary of the invention

[0004] The present invention aims to provide a walking-replacing vehicle to solve the above-mentioned technical problems.

[0005] In view of this, the present invention provides a mobility vehicle, comprising: A driving wheel assembly and a supporting wheel assembly; a longitudinal support beam, one end of which is connected to the drive wheel assembly and the other end of which is connected to the support wheel assembly; The longitudinal support beam is constructed as a chassis frame of the walking vehicle, and the driving wheel assembly and the supporting wheel assembly are respectively located on both sides of the transverse section of the longitudinal support beam and are connected and supported by the strip structure formed by the longitudinal support beam; The longitudinal support beam comprises a support beam main body and a mounting portion, and the mounting portion is suitable for mounting a lifting structure; One end of the lifting structure is connected to the mounting portion, and the other end extends obliquely to just above the longitudinal support beam and is connected to the bearing seat. The lifting structure is located on one side of the space between the bearing seat and the longitudinal support beam, so that the other side of the space between the bearing seat and the longitudinal support beam forms a usable space.

[0006] Furthermore, a pedal is installed on one side of the main body of the support beam, and a seat is installed on the bearing seat. The available space is located on one side of the pedal, so that an open area is formed between the pedal and the bottom of the seat.

[0007] Furthermore, the lifting structure comprises: A posture adjustment arm, one end of which is hinged to the mounting portion and the other end of which is connected to the mounting seat; A lifting arm, one end of which is connected to the attitude adjustment arm through a mounting seat, and the other end of which is connected to the bearing seat; A displacement compensation arm, one end of which is hinged to the lifting arm, and the other end of which is hinged to the mounting portion; A lifting drive component is installed between the displacement compensation arm and the lifting arm. When the lifting drive component drives the displacement compensation arm and the lifting arm to relatively stretch or retract, the lifting arm drives the bearing seat to rise or fall; When the bearing seat is raised or lowered, the posture adjustment arm can adjust the tilt posture of the bearing seat during the lifting process so that the bearing seat remains horizontal; At the same time, the displacement compensation arm can compensate for the horizontal displacement of the bearing seat during the lifting process to reduce the horizontal movement amplitude of the bearing seat.

[0008] Furthermore, a first fixed shaft is passed through the displacement compensation arm, and a second fixed shaft is passed through the lifting arm. One of the first fixed shaft and the second fixed shaft is rotatably connected to the main body of the lifting drive component, and the other of the first fixed shaft and the second fixed shaft is rotatably connected to the driving rod of the lifting drive component.

[0009] Furthermore, the mounting seat is provided with a first mounting portion and a second mounting portion, the first mounting portion is provided with a first rotating shaft, and the second mounting portion is provided with a second rotating shaft; The ends of the lifting arm and the posture adjustment arm are hinged to the first rotating shaft, and the second rotating shaft runs through the lifting arm and is hinged to the displacement compensation arm, wherein the hinge points of the first rotating shaft and the second rotating shaft lifting arm do not overlap.

[0010] Furthermore, one end of the lifting arm away from the posture adjustment arm is hinged to the bearing seat, a third rotating shaft and a fourth rotating shaft are passed through the mounting portion, one end of the displacement compensation arm away from the lifting arm is hinged to the third rotating shaft, and one end of the posture adjustment arm away from the lifting arm is hinged to the fourth rotating shaft.

[0011] Furthermore, a first avoidance portion is provided on the posture adjustment arm, and a second avoidance portion is provided on the mounting portion, and the first avoidance portion and the second avoidance portion are configured to prevent the first fixed axis installed thereon from contacting the posture adjustment arm and the mounting portion during the swinging process of the displacement compensation arm.

[0012] Further, the driving wheel assembly comprises: A first support arm, which is disposed at one end of the mounting portion and is hinged to the mounting portion of the longitudinal support beam; A driving wheel disposed at one end of the first supporting arm; an electric motor configured to apply torque to at least one drive wheel; A first buffer link, one end of which is hinged to the avoidance frame on the longitudinal support beam, and the other end of which is hinged to the first support arm; Among them, the hinge point between the first support arm and the longitudinal support beam is the first hinge point, the hinge point between the first buffer link and the avoidance frame is the second hinge point, and the hinge point between the first buffer link and the first support arm is the third hinge point. The first hinge point, the second hinge point and the third hinge point are arranged in a triangle.

[0013] Further, the avoidance frame is fixed on the mounting portion, and the avoidance frame is constructed as a part of the mounting portion.

[0014] Furthermore, a first buffer spring and a first fastening sleeve are sleeved on the first buffer link, a first support block is provided at one end of the first buffer link, one end of the first buffer spring is in contact with the first support block, and the other end is in contact with the first fastening sleeve, and the first fastening sleeve can move on the first buffer link to control the compression force of the first buffer spring.

[0015] Further, the support wheel assembly comprises: A second support arm is disposed at one end of the longitudinal support beam and connected to the longitudinal support beam; A connecting arm, fixedly mounted on the second supporting arm; A suspension arm, one end of which is hinged to the connecting arm and the other end of which is rotatably connected to the supporting wheel; A second buffer link, one end of which is hinged to the connecting arm, and the other end of which is hinged to the suspension arm; Among them, the hinge point between the suspension arm and the connecting arm is the fourth hinge point, the hinge point between the second buffer link and the connecting arm is the fifth hinge point, the hinge point between the second buffer link and the suspension arm is the sixth hinge point, and the fourth hinge point, the fifth hinge point and the sixth hinge point are arranged in a triangle.

[0016] Furthermore, a second buffer spring and a second fastening sleeve are sleeved on the second buffer connecting rod, a second supporting block is provided at one end of the second buffer connecting rod, one end of the second buffer spring abuts against the second supporting block, and the other end abuts against the second fastening sleeve.

[0017] Compared with the prior art, the beneficial technical effect of the technical solution of the present invention is that the chassis frame of the mobility vehicle is formed by a simple longitudinal support beam, the longitudinal support beam adopts a strip structure, the two ends of the strip structure are respectively connected to the driving wheel assembly and the supporting wheel assembly, and the design of the longitudinal support beam can reduce the weight of the entire mobility vehicle, avoiding the problem of bloated chassis frame; Moreover, the longitudinal support beam includes a support beam main body and an installation portion, and a lifting structure is installed at the installation portion. One end of the lifting structure is connected to the installation portion, and the other end extends obliquely to the top of the longitudinal support beam and is connected to the bearing seat. The lifting structure is located on one side of the space between the bearing seat and the longitudinal support beam, so that the other side of the space between the bearing seat and the longitudinal support beam forms a usable space, which can improve the space utilization between the bearing seat and the longitudinal support beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the structure of the vehicle for transportation in this application; Figure 2 A schematic diagram of the partial structure of the mobility vehicle of this application; Figure 3 A side view of the mobility scooter for this application (the wheelchair is in the raised position); Figure 4 A side view of the mobility scooter for this application (the wheelchair is in the lowered state); Figure 5 A schematic diagram of the lifting structure (in the raised state) for this application; Figure 6 A schematic top view of the lifting structure of this application; Figure 7 for Figure 6 Schematic diagram of the cross section along line AA; Figure 8 This is a partial structural diagram of the lifting structure of this application; Fig. 9 This is a schematic diagram of the partial structure (from another angle) of the lifting structure of this application; Fig.10 This is a schematic diagram of the lifting structure of the present application in a folded state; Fig.11 This is a side schematic diagram of the lifting structure of the present application when it is in a raised state; Fig.12 This is a side schematic diagram of the lifting structure of the present application when it is in a folded state; Fig.13 A schematic diagram of the front-to-rear displacement change of the wheelchair during the lifting process of the mobility commuter vehicle of the present application; Fig.14 This is a schematic diagram of the structure of the driving wheel assembly of the present application; Fig.15 This is a schematic structural diagram of the driving wheel assembly of the present application from another angle; Fig.16 A schematic top view of the driving wheel assembly of the present application; Fig.17 for Fig.16 Schematic diagram of the cross section along line BB; Fig.18 This is a schematic diagram of the structure of the support wheel assembly of this application; Fig.19 This is a schematic diagram of the partial structure of the support wheel assembly of this application; Fig. 20 This is a top view schematic diagram of the support wheel assembly of this application; Fig.21 for Fig. 20 Schematic diagram of the cross section along the CC line. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Reference Figures 1 to 4 , a mobility vehicle 200, comprising a driving wheel assembly 20, a supporting wheel assembly 30 and a longitudinal support beam 40, wherein one end of the longitudinal support beam 40 is connected to the driving wheel assembly 20, and the other end is connected to the supporting wheel assembly 30; In this embodiment, the longitudinal support beam 40 is constructed as a chassis frame of the walking vehicle, and the driving wheel assembly 20 and the supporting wheel assembly 30 are respectively located on both sides of the transverse section of the longitudinal support beam 40, and are connected and supported by the strip structure formed by the longitudinal support beam 40. The strip structure design of the longitudinal support beam 40 not only simplifies the overall structure of the vehicle, but also effectively reduces the weight of the vehicle. Compared with the traditional chassis frame, this design avoids bloat and redundancy, making the vehicle lighter, easier to carry and operate.

[0022] The longitudinal support beam 40 includes a support beam main body 401 and a mounting portion 402 , and the mounting portion 402 is suitable for mounting the lifting structure 100 ; One end of the lifting structure 100 is connected to the mounting portion 402, and the other end is inclined to extend to the top of the longitudinal support beam 40 and connected to the bearing seat 11. The lifting structure 100 is located on one side of the space between the bearing seat 11 and the longitudinal support beam 40, so that the other side of the space between the bearing seat 11 and the longitudinal support beam 40 forms a usable space, which can improve the space utilization rate between the bearing seat 11 and the longitudinal support beam 40. In addition, a pedal 50 is installed on one side of the support beam main body 401, and a seat 60 is installed on the bearing seat 11. The usable space is located on one side of the pedal 50, so that an open area 200a is formed between the bottom of the pedal 50 and the seat 60, which not only increases the user's use space, but also, when the user is driving the mobility vehicle, the user's legs can be supported on the pedal 50, or retracted to the open area 200a, providing the user's legs with a movable space, thereby improving the riding comfort and convenience.

[0023] At the same time, the longitudinal support beam 40 is a core component connecting the driving wheel assembly 20 and the supporting wheel assembly 30. Its strip-shaped structure design not only reduces the weight, but also enhances the stability and support of the vehicle. This design makes the vehicle more stable during driving, reduces the bumpy feeling caused by uneven road surface or speed changes, and improves the user's driving experience.

[0024] Further, refer to Figures 5 to 12 The lifting structure 100 includes a posture adjustment arm 12, a lifting arm 13, a displacement compensation arm 14, and a lifting drive member 15; wherein the bearing seat 11 is arranged above the longitudinal support beam 40, one end of the posture adjustment arm 12 is connected to the mounting portion 402, and the other end is connected to the mounting seat 16, and the posture adjustment arm 12 is suitable for adjusting the tilt posture of the bearing seat 11 during the lifting process; One end of the lifting arm 13 is connected to the posture adjustment arm 12, and the other end is connected to the bearing seat 11; one end of the displacement compensation arm 14 is hinged to the lifting arm 13, and the other end is hinged to the mounting portion 402, and the displacement compensation arm 14 is suitable for compensating the horizontal displacement of the bearing seat 11 during the lifting process; The extension direction of the lifting arm 13 and the extension direction of the displacement compensation arm 14 form an intersecting angle, and the extension direction of the posture adjustment arm 12 and the extension direction of the lifting arm 13 form an intersecting angle.

[0025] The lifting drive member 15 is installed between the displacement compensation arm 14 and the lifting arm 13, and is used to control the lifting of one end of the lifting arm 13 close to the bearing seat 11, wherein the lifting drive member 15 is installed in an inclined manner for oblique pushing. The lifting drive member 15 is preferably an electric push rod. During actual installation, the inclination angle of the electric push rod relative to the horizontal is greater than the inclination angle of the lifting arm 13 relative to the horizontal plane. In this way, the pushing force of the electric push rod can be decomposed into the lifting force of the end of the lifting arm 13.

[0026] A first fixed shaft 17 is provided on the displacement compensation arm 14, and a second fixed shaft 18 is provided on the lifting arm 13. One of the first fixed shaft 17 and the second fixed shaft 14 is rotatably connected to the main body of the lifting drive member 15, and the other of the first fixed shaft 17 and the second fixed shaft 18 is rotatably connected to the driving rod of the lifting drive member 15. Specifically, in this embodiment, the lifting drive member 15 is preferably an electric push rod, the main body of the electric push rod is penetrated by the first fixed shaft 17, the main body of the electric push rod can rotate relative to the first fixed shaft 17, the end of the drive rod of the electric push rod is penetrated by the second fixed shaft 18, and the drive rod of the electric push rod can rotate relative to the second fixed shaft 18.

[0027] In addition, one end of the posture adjustment arm 12 is hinged to the mounting portion 402, and the other end is connected to the mounting seat 16 and hinged to the end of the lifting arm 13. When the lifting drive member 15 controls the lifting arm 13 to lift or lower, the posture adjustment arm 12 can adjust the swinging posture of the lifting arm 13 to ensure that the end of the lifting arm 13 close to the supporting seat 11 is always in a horizontal state. In this way, when the lifting arm drives the supporting seat to lift or lower, the supporting seat 11 is always in a horizontal state without tilting.

[0028] Furthermore, a first mounting portion 161 and a second mounting portion 162 are provided on the mounting seat 16, a first rotating shaft 163 is passed through the first mounting portion 161, and a second rotating shaft 164 is passed through the second mounting portion 162; the ends of the lifting arm 13 and the posture adjustment arm 12 are hinged to the first rotating shaft 163, and the lifting arm 13 and the displacement compensation arm 14 are hinged to the second rotating shaft 164, wherein the hinge points of the first rotating shaft 163 and the second rotating shaft 164 and the lifting arm 13 do not coincide with each other. In the present embodiment, the hinge point of the first rotating shaft 163 and the lifting arm 13 is located at the end of the lifting arm 13, and the hinge point of the second rotating shaft 164 and the lifting arm 13 is located between the end point and the center point of the lifting arm 13.

[0029] In addition, one end of the lifting arm 13 away from the posture adjustment arm 12 is hinged to the bearing seat 11, the third rotating shaft 101 and the fourth rotating shaft 102 are passed through the mounting portion 402, the one end of the displacement compensation arm 14 away from the lifting arm 13 is hinged to the third rotating shaft 101, and the one end of the posture adjustment arm 12 away from the lifting arm 13 is hinged to the fourth rotating shaft 102.

[0030] The lifting structure of the present application, when actually used, has the following specific principles: Reference Figures 10 to 12When the supporting seat 11 is rising, the driving rod of the lifting drive 15 is extended to control the lifting arm 13 to lift up the end close to the supporting seat 11, and the displacement compensation arm 14 and the posture adjustment arm 12 hinged thereto also swing along with it. During the operation, the supporting seat 11 is gradually lifted up in a continuous manner. Since the lifting drive 15 is pushed in an oblique push manner, from a mechanical point of view, the pushing force of the lifting drive 15 can be decomposed into horizontal thrust and longitudinal thrust. After the horizontal thrust is applied to the lifting arm 13, the lifting arm 13 will produce a horizontal extension displacement, which will inevitably drive the supporting seat 11 at the end of the lifting arm 13 to produce a horizontal displacement. At the same time, after the longitudinal thrust is applied to the lifting arm 13, the lifting arm 13 will produce a longitudinal lifting displacement, which will drive the lifting arm 1 The bearing seat 11 at the end of the 3rd part generates a lifting displacement, thereby realizing the lifting action of the bearing seat 11. In the process of the bearing seat 11 being lifted, in order to reduce the horizontal movement amplitude of the bearing seat 11, a displacement compensation arm 14 is hinged between the mounting portion 402 and the lifting arm 13. After the lifting drive member 15 is pushed out, the displacement compensation arm 14 hinged to the lifting arm 13 will swing. The swinging direction of the displacement compensation arm 14 is opposite to the horizontal movement direction of the lifting arm 13 and the bearing seat 11. During the swinging process of the displacement compensation arm 14 in the opposite direction, the horizontal displacement of the bearing seat 11 can be compensated, thereby reducing the horizontal movement amplitude of the bearing seat 11 during the lifting process. Similarly, when the lifting drive member 15 drives the bearing seat 11 to descend, the displacement compensation arm 14 can also play a role in horizontal displacement compensation. In addition, a first fixed shaft 17 is provided on the displacement compensation arm 14, and a second fixed shaft 18 is provided on the lifting arm 13. One of the first fixed shaft 17 and the second fixed shaft 14 is rotatably connected to the main body of the lifting drive member 15, and the other of the first fixed shaft 17 and the second fixed shaft 18 is rotatably connected to the driving rod of the lifting drive member 15. The first fixed shaft 17 and the second fixed shaft 18 are mainly used for the installation of the lifting drive member 15 (an electric push rod is used in this embodiment, which will not be repeated below). After the first fixed shaft 17 and the second fixed shaft 18 are connected to the two ends of the lifting drive member 15, the linkage between the displacement compensation arm 14 and the lifting arm 13 can be realized. Since the two ends of the lifting drive member 15 are respectively connected to the first fixed shaft 17 and the second fixed shaft 18, The fixed axis 18 is rotatably connected to facilitate the lifting drive member 15 to adjust its own installation angle. Specifically, after the lifting drive member 15 is pushed out, the displacement compensation arm 14 hinged to the lifting arm 13 will swing. The swinging direction of the displacement compensation arm 14 is opposite to the horizontal movement direction of the lifting arm 13 and the supporting seat 11. During the swinging of the displacement compensation arm 14 in the opposite direction, the lifting drive member 15 will be driven to swing in the opposite direction through the first fixed axis 17. The lifting drive member 15 drives the lifting arm 13 to swing in the direction of the displacement compensation arm 14 through the connected second fixed axis 18, thereby further realizing the horizontal displacement compensation function of the supporting seat 11 at the end of the lifting arm 13, thereby reducing the horizontal movement amplitude of the supporting seat 11 during the lifting process.

[0031] In this embodiment, the posture adjustment arm 12 ensures that the lifting arm 13 maintains a stable swinging posture during the lifting process through its unique connection method and structural design, so that the support seat 11 is always in a horizontal state. Specifically, one end of the posture adjustment arm 12 is hinged to the mounting portion 402, and the other end is hinged to the mounting seat 16, and is also hinged to the end of the lifting arm 13. This multi-hinged point design enables the posture adjustment arm 12 to fine-tune the swinging posture of the lifting arm 13 during the lifting process.

[0032] When the lifting drive 15 pushes the lifting arm 13 to rise or fall, the lifting arm 13 will swing around its hinge point. The posture adjustment arm 12 can sense the swing angle of the lifting arm 13 through its hinge point with the lifting arm 13, and adjust the posture of the lifting arm 13 by its own swing.

[0033] The swing direction of the posture adjustment arm 12 is opposite to that of the lifting arm 13. This reverse swing can offset the tilting tendency of the lifting arm 13 during the lifting process, thereby ensuring that the end of the lifting arm 13 close to the bearing seat 11 is always in a horizontal state.

[0034] When designing the present application, the length and angle of the posture adjustment arm 12 are precisely calculated to ensure that during the lifting process, no matter how the lifting arm 13 swings, the posture adjustment arm 12 can compensate for the tilt angle of the lifting arm 13 through its own swing, so that the support base 11 always remains horizontal. For example, when the lifting arm 13 has a certain tilt angle during the lifting process, the posture adjustment arm 12 will adjust the end position of the lifting arm 13 through its swing to restore it to a horizontal state.

[0035] In addition, a first avoidance portion 121 is provided on the posture adjustment arm 12 to avoid collision with other components (such as the first fixed shaft 17) during the swinging process, thereby ensuring that the posture adjustment arm 12 can be swung and adjusted smoothly.

[0036] Furthermore, the lifting drive member 15 (such as an electric push rod) drives the linkage of the lifting arm 13 and the displacement compensation arm 14 by an oblique pushing method. The specific principle is as follows: Decomposition of oblique thrust: The pushing force of the lifting drive member 15 can be decomposed into horizontal thrust and longitudinal thrust. The horizontal thrust pushes the lifting arm 13 to produce horizontal displacement, and the longitudinal thrust pushes the lifting arm 13 to produce longitudinal lifting displacement.

[0037] Linkage mechanism: The two ends of the lifting drive member 15 are respectively hinged with the displacement compensation arm 14 and the lifting arm 13. When the lifting drive member 15 is pushed out, the displacement compensation arm 14 and the lifting arm 13 swing at the same time to achieve the lifting and horizontal displacement compensation of the bearing seat 11.

[0038] The displacement compensation arm 14 compensates for the horizontal displacement of the bearing seat 11 by swinging in a direction opposite to the lifting arm 13. The specific principle is as follows: Swing compensation: When the lifting arm 13 generates horizontal displacement, the displacement compensation arm 14 offsets the horizontal displacement of the lifting arm 13 by swinging in the opposite direction, thereby reducing the horizontal movement amplitude of the supporting base 11, or even controlling the horizontal movement amplitude of the supporting base 11 to approach zero.

[0039] In addition, the displacement compensation arm 14 and the lifting arm 13 are hinged via the second rotating shaft 164 to ensure that the two swing synchronously during the lifting process, thereby improving the stability of the lifting structure.

[0040] Reference Fig.13 After the seat 60 of the mobility scooter 200 is lifted by the lifting structure 100, the central axis of the seat 60 is S1. After the seat 60 is lowered by the lifting structure 100, the central axis of the seat 60 is S2. By comparison, it is found that the value of the distance Δd between the central axis S1 and the central axis S2 is very small, indicating that the lifting structure 100 has a good horizontal displacement compensation effect in the process of controlling the lifting of the seat 60. The front and rear displacement difference of the seat 60 during the lifting process is very small, and the user experience is good.

[0041] Further, refer to Figure 8 , Fig. 9 There are multiple groups of lifting arms 13, and adjacent lifting arms 13 are hinged by first linkage rocking arms 131; there are multiple groups of displacement compensation arms 14, and adjacent displacement compensation arms 14 are hinged by second linkage rocking arms 141. When the lifting drive 15 controls the lifting and lowering of the supporting seat 11, the lifting arms 13 and the hinged displacement compensation arms 14 will also swing. The multiple groups of swinging lifting arms 13 are synchronously linked through the first linkage rocking arms 131, and the multiple groups of swinging displacement compensation arms 14 are synchronously linked through the second linkage rocking arms 141, so that the overall strength of the entire lifting structure can be improved.

[0042] It should be noted that, in the present embodiment, the lifting arm 13 and the displacement compensation arm 14 on one side below the support seat 11 are both in two groups, wherein one lifting arm 13 and the displacement compensation arm 14 are hinged via the second rotating shaft 164, and the free ends of the other lifting arm 13 and the displacement compensation arm 14 are freely hinged, and the hinge point can be detached from the second rotating shaft 164. The advantage of this design is that after being detached from the second rotating shaft 164, the other lifting arm 13 and the displacement compensation arm 14 that are hinged to each other have a greater degree of rotational freedom.

[0043] Moreover, the ends of the two sets of lifting arms 13 are hinged to the bearing seat 11 , and the two hinged positions are different, so that the bearing seat 11 can be stably supported at the ends of the lifting arms 13 .

[0044] Furthermore, a first avoidance portion 121 corresponding to the first fixed axis 17 is provided on the posture adjustment arm 12, and a second avoidance portion 402a is provided on the mounting portion 402. The first avoidance portion 121 and the second avoidance portion 402a are configured to prevent the posture adjustment arm 12 from colliding with the first fixed axis 17 during the rotation process. In this embodiment, the first avoidance portion 121 and the second avoidance portion 402a are designed as an arc-shaped opening structure. During the lifting and lowering process of the entire lifting structure, the displacement compensation arm 14 swings, and the first fixed axis 17 also swings therewith. The arc-shaped opening structure of the first avoidance portion 121 and the second avoidance portion 402a can form an avoidance space for the first fixed axis 17 to prevent the swinging first fixed axis 17 from touching the posture adjustment arm 12.

[0045] Furthermore, the lifting arms 13 are located on both sides of the lifting drive member 15, and each lifting arm 13 is equipped with a corresponding displacement compensation arm 14, which can improve the stability during the lifting process.

[0046] Reference Figures 14 to 17The driving wheel assembly 20 includes a support arm 211 provided at one end of the mounting portion 402 and hinged to the mounting portion 402, a driving wheel 212 provided at one end of the support arm 211, and a buffer link 213 having one end hinged to the mounting portion 402 and the other end hinged to the support arm 211, wherein at least one driving wheel 212 is provided with an electric motor 214, and the electric motor 214 applies torque to the driving wheel 212; Among them, the installation direction of the buffer link 213 is inclined relative to the installation surface where the support arm 211 is located, the hinge point between the support arm 211 and the mounting portion 402 is the first hinge point 215, the hinge point between the buffer link 213 and the mounting portion 402 is the second hinge point 216, and the hinge point between the buffer link 213 and the support arm 211 is the third hinge point 217. The first hinge point 215, the second hinge point 216 and the third hinge point 217 are arranged in a triangle. After the three hinge points are arranged in a triangle, when the support arm 211 shakes up and down relative to the plane where the mounting portion 402 is located, the buffer support force generated by the buffer link 213 on the support arm 211 will be more stable, thereby improving the stability of the support arm 211 during the shock absorption and buffering process.

[0047] In some embodiments, the support arm 211 is provided with a placement position groove 2110 corresponding to the electric motor 214. When the support arm 211 shakes up and down, the placement position groove 2110 can support the electric motor 214, providing greater support for the electric motor 214 and preventing the electric motor 214 from loosening during the up and down vibration.

[0048] Furthermore, a detachable avoidance frame 218 is provided at one end of the mounting portion 402, and the avoidance frame 218 can also be designed as a part of the mounting portion 402. One end of the buffer connecting rod 213 is hinged to the avoidance frame 218, and the avoidance frame 218 provides a hinge point for the buffer connecting rod 213. Under normal circumstances, the mounting portion 402 and the avoidance frame 218 can adopt an integrally formed structure. In some embodiments, considering the function of the avoidance frame 218 itself, in order to facilitate the disassembly and assembly of the avoidance frame 218, the avoidance frame 218 can be detachably installed on the mounting portion. On 402, since the design requires the first hinge point 215, the second hinge point 216 and the third hinge point 217 to be arranged in a triangle, the buffer link 213 is generally installed at an angle on one side of the mounting portion 402, and the first hinge point 215 and the third hinge point 217 are generally in the same plane, and the avoidance frame 218 cleverly provides a second hinge point 216 formed by the hinge of the mounting portion 402 and the buffer link 213, so that the first hinge point 215, the second hinge point 216 and the third hinge point 217 are arranged in a triangle.

[0049] Further, in order to improve the shock absorbing effect of the buffer link 213, a buffer spring 219 and a fastening sleeve 220 are sleeved on the buffer link 213, and a support block 221 is provided at one end of the buffer link 213. One end of the buffer spring 219 abuts against the support block 221, and the other end abuts against the fastening sleeve 220. The buffer link 213 is a telescopic rod, and the fastening sleeve 220 can move on the buffer link 213 to control the compression elastic force of the buffer spring 219. When the driving wheel 212 hits a ground obstacle during driving, the support arm 211 vibrates up and down relative to the plane where the mounting portion 402 is located. After the buffer spring 219 is installed, it can play a shock-absorbing role on the support arm 211.

[0050] Specifically, the fastening sleeve 220 is threadedly connected to the buffer connecting rod 213. After the fastening sleeve 220 rotates on the buffer connecting rod 213, the compression amount of the buffer spring 219 can be controlled, so as to achieve the purpose of adjusting the shock absorption strength of the buffer connecting rod 213.

[0051] In this embodiment, there are two support arms 211 , which are symmetrically installed on both sides of the installation portion 402 . A reinforcing rib 2111 is provided on one side of the support arm 211 , and the reinforcing rib 2111 can improve the overall strength of the support arm 211 .

[0052] Reference Figures 18 to 21 The support wheel assembly 30 includes a support arm 311 arranged at one end of the support beam main body 401 and fixedly connected to the support beam main body 401, a connecting arm 312 fixed to the end of the support arm 311, a suspension arm 313 hinged to the connecting arm 312, and a support wheel 314 rotatably connected to the end of the suspension arm 313, wherein a buffer link 315 is provided between the connecting arm 312 and the suspension arm 313, one end of the buffer link 315 is hinged to the connecting arm 312, and the other end is hinged to the suspension arm 313. Since the support wheels 314 are generally symmetrically installed on both sides of the support beam main body 401, the number of the support arms 311 is two, and the two support arms 311 are symmetrically installed on both sides of the support beam main body 401.

[0053] In this embodiment, the hinge point between the suspension arm 313 and the connecting arm 312 is the fourth hinge point 316, the hinge point between the buffer link 315 and the connecting arm 312 is the fifth hinge point 317, and the hinge point between the buffer link 315 and the suspension arm 313 is the sixth hinge point 318. The fourth hinge point 316, the fifth hinge point 317 and the sixth hinge point 318 are arranged in a triangle. After the three hinge points are arranged in a triangle, when the suspension arm 313 shakes up and down relative to the connecting arm 312, the buffer support force generated by the buffer link 315 on the suspension arm 313 will be more stable, thereby improving the stability of the suspension arm 313 during the shock absorption and buffering process.

[0054] In some embodiments, the buffer link 315 is a telescopic rod, and a buffer spring 319 and a fastening sleeve 320 are provided on the buffer link 315. A support block 321 is provided at one end of the buffer link 315. One end of the buffer spring 319 contacts the support block 321, and the other end contacts the fastening sleeve 320. When the support wheel 314 touches a ground obstacle during driving, the suspension arm 313 will shake. After the buffer spring 319 is installed, it can play a shock-absorbing role on the suspension arm 313. Since the buffer link 315 is a telescopic rod, when the suspension arm 313 shakes, the buffer link 315 that is impacted will undergo a telescopic change in length. During the telescopic change of the buffer link 315, the buffer spring 319 generates a corresponding elastic force to improve the shock-absorbing effect of the buffer link 315 on the suspension arm 313.

[0055] Furthermore, the fastening sleeve 320 can move on the buffer link 315 to control the compression force of the buffer spring 319. Preferably, the fastening sleeve 320 is threadedly connected to the buffer link 315. After the fastening sleeve 320 rotates on the buffer link 315, the compression amount of the buffer spring 319 can be controlled, thereby achieving the purpose of adjusting the shock absorbing strength of the buffer link 315.

[0056] Furthermore, a fixing plate 322 is provided at the end of the support arm 311, and the fixing plate 322 is fixedly connected to the connecting arm 312 through a fixing member (screw). Moreover, one of the support arm 311 and the connecting arm 312 is provided with a locking flange 323, and the other of the support arm 311 and the connecting arm 312 is provided with a locking groove 324 adapted to the locking flange 323. The support arm 311 and the connecting arm 312 are locked together through the locking flange 323 and the locking groove 324.

[0057] When designing, in order to facilitate disassembly and assembly, the support arm 311 and the connecting arm 312 are connected in a detachable manner. When connected, the fixing plate 322 at the end of the support arm 311 is connected to the connecting arm 312 through a fixing piece. In order to prevent the connection position of the support arm 311 and the connecting arm 312 from loosening during vibration, in addition, the splicing position of the support arm 311 and the connecting arm 312 is clamped by the clamping flange 323 and the clamping groove 324, so that the assembly of the support arm 311 and the connecting arm 312 can be ensured. In terms of firmness and stability, when designing the locking flange 323, the extension direction of the locking flange 323 intersects with the vibration direction of the support wheel 314, and the preferred intersection angle is 90 degrees. The advantage of this design is that when the support wheel 314 drives the connecting arm 312 to shake up and down, the force between the support arm 311 and the connecting arm 312 is directly driven by the locking flange 323, which can greatly reduce the load borne by the fixing parts on the fixing plate 322 and avoid the problem of looseness at the contact position between the fixing plate 322 and the connecting arm 312.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vehicle for commuting, comprising A driving wheel assembly and a supporting wheel assembly; a longitudinal support beam, one end of which is connected to the driving wheel assembly and the other end of which is connected to the supporting wheel assembly; It is characterized in that The longitudinal support beam is constructed as a chassis frame of the mobility scooter, the driving wheel assembly and the supporting wheel assembly are respectively located on both sides of a transverse cross section of the longitudinal support beam, and are connected and supported by a strip structure formed by the longitudinal support beam; The longitudinal support beam comprises a support beam main body and a mounting portion, and the mounting portion is suitable for mounting a lifting structure; One end of the lifting structure is connected to the mounting portion, and the other end extends obliquely to the top of the longitudinal support beam and is connected to the bearing seat. The lifting structure is located on one side of the space between the bearing seat and the longitudinal support beam, so that the other side of the space between the bearing seat and the longitudinal support beam forms a usable space.

2. The mobility vehicle according to claim 1, characterized in that: A pedal is installed on one side of the main body of the support beam, a seat is installed on the bearing seat, and the available space is located on one side of the pedal, so that an open area is formed between the pedal and the bottom of the seat.

3. The mobility vehicle according to claim 1, characterized in that: The lifting structure comprises: A posture adjustment arm, one end of which is hinged to the mounting portion and the other end of which is connected to the mounting seat; A lifting arm, one end of which is connected to the posture adjustment arm through the mounting seat, and the other end of which is connected to the bearing seat; A displacement compensation arm, one end of which is hinged to the lifting arm and the other end of which is hinged to the mounting portion; A lifting drive member, which is installed between the displacement compensation arm and the lifting arm. When the lifting drive member drives the displacement compensation arm and the lifting arm to relatively stretch or retract, the lifting arm drives the bearing seat to be lifted or lowered; When the bearing seat is raised and lowered, the posture adjustment arm can adjust the tilt posture of the bearing seat during the lifting process so that the bearing seat remains horizontal; At the same time, the displacement compensation arm can compensate for the horizontal displacement of the bearing seat during the lifting process to reduce the horizontal movement amplitude of the bearing seat.

4. The mobility vehicle according to claim 3, characterized in that: A first fixed shaft is passed through the displacement compensation arm, and a second fixed shaft is passed through the lifting arm. One of the first fixed shaft and the second fixed shaft is rotatably connected to the main body of the lifting drive member, and the other of the first fixed shaft and the second fixed shaft is rotatably connected to the driving rod of the lifting drive member.

5. The mobility vehicle according to claim 3, characterized in that: The mounting seat is provided with a first mounting portion and a second mounting portion, the first mounting portion is provided with a first rotating shaft, and the second mounting portion is provided with a second rotating shaft; The ends of the lifting arm and the posture adjustment arm are hinged to the first rotating shaft, and the second rotating shaft passes through the lifting arm and is hinged to the displacement compensation arm, wherein the hinge points of the lifting arm of the first rotating shaft and the second rotating shaft do not overlap.

6. The mobility vehicle according to claim 3, characterized in that: One end of the lifting arm away from the posture adjustment arm is hinged to the bearing seat, a third rotating shaft and a fourth rotating shaft are passed through the mounting portion, one end of the displacement compensation arm away from the lifting arm is hinged to the third rotating shaft, and one end of the posture adjustment arm away from the lifting arm is hinged to the fourth rotating shaft.

7. The mobility mobilization vehicle according to claim 4, characterized in that: A first avoidance portion is provided on the posture adjustment arm, and a second avoidance portion is provided on the mounting portion, and the first avoidance portion and the second avoidance portion are configured to prevent the first fixed shaft mounted thereon from contacting the posture adjustment arm and the mounting portion during the swinging process of the displacement compensation arm.

8. The mobility mobilization vehicle according to claim 1, characterized in that: The driving wheel assembly comprises: A first support arm, which is disposed at one end of the mounting portion and is hinged to the mounting portion of the longitudinal support beam; a driving wheel disposed at one end of the first supporting arm; an electric motor configured to apply torque to at least one of the drive wheels; A first buffer link, one end of which is hinged to the avoidance frame on the longitudinal support beam, and the other end of which is hinged to the first support arm; Among them, the hinge point between the first support arm and the longitudinal support beam is the first hinge point, the hinge point between the first buffer link and the avoidance frame is the second hinge point, the hinge point between the first buffer link and the first support arm is the third hinge point, and the first hinge point, the second hinge point and the third hinge point are arranged in a triangle.

9. The mobility mobilization vehicle according to claim 8, characterized in that: The avoidance frame is fixed on the mounting portion, and the avoidance frame is constructed as a part of the mounting portion.

10. The mobility mobilization vehicle according to claim 8, characterized in that: The first buffer link is provided with a first buffer spring and a first fastening sleeve, one end of the first buffer link is provided with a first support block, one end of the first buffer spring is in contact with the first support block, and the other end is in contact with the first fastening sleeve, and the first fastening sleeve can move on the first buffer link to control the compression elastic force of the first buffer spring.

11. The mobility vehicle according to claim 1, characterized in that: The support wheel assembly comprises: A second support arm is disposed at one end of the longitudinal support beam and connected to the longitudinal support beam; A connecting arm, fixedly mounted on the second supporting arm; A suspension arm, one end of which is hinged to the connecting arm and the other end of which is rotatably connected to the supporting wheel; A second buffer link, one end of which is hinged to the connecting arm, and the other end of which is hinged to the suspension arm; Among them, the hinge point between the suspension arm and the connecting arm is the fourth hinge point, the hinge point between the second buffer link and the connecting arm is the fifth hinge point, the hinge point between the second buffer link and the suspension arm is the sixth hinge point, and the fourth hinge point, the fifth hinge point and the sixth hinge point are arranged in a triangle.

12. The mobility vehicle according to claim 11, characterized in that: The second buffer connecting rod is sleeved with a second buffer spring and a second fastening sleeve, one end of the second buffer connecting rod is provided with a second supporting block, one end of the second buffer spring abuts against the second supporting block, and the other end abuts against the second fastening sleeve.

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