Framework and scooter

Abstract

The framework comprises a longitudinal supporting beam, one end of the longitudinal supporting beam is connected with a driving wheel assembly, and the other end of the longitudinal supporting beam is connected with a supporting wheel assembly; the longitudinal supporting beam is constructed as a chassis framework of the scooter, and 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 of the longitudinal supporting beam. A pedal is installed at one end of the longitudinal supporting beam, and an opening is formed in the end and communicated with an inner cavity of the longitudinal supporting beam. A battery pack is installed in the inner cavity of the longitudinal supporting beam, a user can bend down to face the opening while keeping a sitting posture, the battery pack is inserted into the inner cavity of the longitudinal supporting beam in the direction of the opening to complete assembly, or the battery pack is longitudinally pulled out of the inner cavity of the longitudinal supporting beam through the opening to achieve disassembly. A user can easily complete the replacement of the battery after bending down in a sitting posture.

Description

Technical Field

[0001] The present application relates to a frame and a vehicle for replacing travel. Background Art

[0002] With the acceleration of urbanization and the improvement of environmental awareness, mobility vehicles (such as electric scooters, electric balance bikes, etc.) have gradually become an important part of people's daily lives as a green and convenient means of short-distance travel. One of the core components of mobility vehicles is its skeleton structure, which not only needs to have sufficient strength and stability to support the overall weight of the vehicle, but also needs to take into account lightweight design to improve portability and energy efficiency. In addition, as the power source of mobility vehicles, the convenience of installation and removal of batteries directly affects the user experience.

[0003] Traditional scooter frame designs usually use complex frame structures, which increase the weight of the vehicle, and the battery installation and removal process is cumbersome. Users need to bend over or squat to operate, which is time-consuming and laborious, and is not friendly to users with inconvenient legs and feet. In addition, the installation position of the battery in existing designs is often separated from the overall structure of the vehicle, resulting in low space utilization and may affect the center of gravity distribution of the vehicle, thereby affecting driving stability. Summary of the invention

[0004] The purpose of at least one specific embodiment of the present invention is to solve the defects of the prior art and provide a frame and a vehicle for replacing travel.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A skeleton, comprising:

[0007] 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;

[0008] The longitudinal support beam is constructed as a chassis frame of the mobility 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 of the longitudinal support beam;

[0009] An opening is provided at the end of the longitudinal support beam, and the opening is communicated with the inner cavity of the longitudinal support beam;

[0010] The frame is connected to the seat via a lifting structure, and the lifting structure is suitable for driving the seat to rise and fall above the frame;

[0011] A battery pack is installed in the inner cavity of the longitudinal support beam. When the lifting structure drives the seat to the lowest position, the user can maintain a sitting position, bend over and face the opening, and insert the battery pack into the inner cavity of the longitudinal support beam along the direction of the opening to complete the assembly, or, pull the battery pack out longitudinally from the inner cavity of the longitudinal support beam through the opening to achieve disassembly.

[0012] Furthermore, a pedal is rotatably installed at one end of the longitudinal support beam. When the pedal is in an unfolded state, it can limit the withdrawal path of the battery pack. When the pedal is in a folded or semi-folded state, the limiting state of the withdrawal path of the battery pack is released.

[0013] Furthermore, the insertion path and the extraction path of the battery pack are both located on the central axis of the longitudinal support beam.

[0014] Further, the pedal comprises a pedal body, an articulated arm connected to the pedal body, an end of the articulated arm being articulated to the longitudinal support beam, wherein a hollow portion is provided on the pedal body;

[0015] When the pedal body is in the unfolded state, the surface of the pedal body intersects with the line where the battery pack extraction path is located, and the pedal body limits the battery pack extraction path;

[0016] When the pedal body is in a folded or semi-folded state, the hollow portion forms an escape space for the battery pack on the extraction path, and the limiting state of the pedal body on the extraction path of the battery pack is released.

[0017] Furthermore, a buckle assembly is installed on the battery pack, and after the battery pack is inserted into the inner cavity of the longitudinal support beam, the buckle assembly is suitable for positioning the battery pack.

[0018] Further, the buckle assembly includes:

[0019] A buckle body, which is slidably mounted inside the battery pack and has one end extending from the surface of the battery pack;

[0020] A first support spring, which is installed inside the battery pack, one end of which supports the buckle body and the other end of which is supported inside the battery pack;

[0021] An unlock button slidably mounted on the end of the battery pack;

[0022] a second support spring, one end of which supports the unlock button and the other end of which is supported inside the battery pack;

[0023] Among them, the buckle body has an inclined surface, and the inner side of the unlocking button is provided with an extrusion part, the end of the extrusion part is close to the inclined surface and contacts the inclined surface, when the unlocking button drives the extrusion part to squeeze the inclined surface, the end of the buckle body retracts from the surface of the battery pack.

[0024] Furthermore, the installation directions of the first support spring and the second support spring in the battery pack are perpendicular.

[0025] Furthermore, a protective cover is installed at the opening, and the protective cover is located on one side of the end of the battery pack.

[0026] The beneficial technical effects of the frame provided by the present application compared with the prior art are as follows: 1. The longitudinal support beam adopts a strip structure design, which reduces the overall weight of the frame, making the vehicle lighter, easier to carry and operate, and the design of the battery pack built into the longitudinal support beam optimizes the center of gravity distribution of the vehicle, reduces the risk of shaking and rollover of the vehicle during driving, and further improves driving stability and safety;

[0027] 2. The battery pack is integrated into the inner cavity of the longitudinal support beam, and the opening design enables plug-in installation and pull-out removal. Users can easily replace the battery by bending over in a sitting position. Users do not need to get off the vehicle and squat to replace the battery pack, which significantly improves the convenience and comfort of operation and is very friendly to users with inconvenient legs and feet;

[0028] 3. The battery pack is built into the inner cavity of the longitudinal support beam, making full use of the space above the frame and avoiding the space waste caused by the separation of the battery and the frame in the traditional design. This integrated design not only optimizes the overall layout of the vehicle, but also lowers the center of gravity of the vehicle and improves driving stability.

[0029] Another technical solution adopted by the present application is to provide a mobility assisted vehicle, which includes a driving wheel assembly, a supporting wheel assembly, and a frame as described above connected between the driving wheel assembly and the supporting wheel assembly.

[0030] Furthermore, a seat is installed above the frame, and the opening of the longitudinal support beam is located below the opening side of the seat. After the battery pack is inserted into the longitudinal support beam, the battery pack is located directly below the seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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.

[0032] Figure 1 This is a schematic diagram of the structure of the skeleton of this application.

[0033] Figure 2 This is a schematic diagram of the assembly of the skeleton and battery pack of this application.

[0034] Figure 3 This is a schematic diagram of the pedal from unfolding to folding process of this application.

[0035] Figure 4 This is a schematic diagram of the structure of the pedal after it is folded.

[0036] Figure 5This is a cross-sectional schematic diagram of the skeleton and battery pack after assembly in this application.

[0037] Figure 6 For this application Figure 5 Magnified view of area A in .

[0038] Figure 7 This is a front view of the battery pack of this application.

[0039] Figure 8 for Figure 7 Schematic diagram of the cross section along line BB.

[0040] Fig. 9 for Figure 7 Schematic diagram of the cross section along the CC line.

[0041] Fig.10 for Figure 8 Magnified view of area D in .

[0042] Fig.11 for Fig. 9 Magnified view of area E in .

[0043] Fig.12 It is a schematic diagram of the structure of a mobility assisted vehicle in a certain embodiment of the present application.

[0044] Fig.13 It is a schematic diagram of the lifting structure (in a raised state) of the present invention.

[0045] Fig.14 It is a top view schematic diagram of the lifting structure of the present invention.

[0046] Fig.15 for Fig.14 Schematic diagram of the cross section along line AA.

[0047] Fig.16 It is a partial structural schematic diagram of the lifting structure of the present invention.

[0048] Fig.17 It is a schematic diagram of the partial structure (from another angle) of the lifting structure of the present invention.

[0049] Fig.18 It is a schematic diagram of the lifting structure of the present invention in a folded state;

[0050] Fig.19 A side schematic diagram of the lifting structure of the present invention when it is in a raised state;

[0051] Fig. 20 It is a side schematic diagram of the lifting structure of the present invention when it is in a folded state. DETAILED DESCRIPTION

[0052] 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.

[0053] Reference Figure 1 , Figure 2 , Fig.12 , a skeleton 100, comprising a longitudinal support beam 10, one end of which is connected to a driving wheel assembly 20, and the other end of which is connected to a supporting wheel assembly 30;

[0054] The longitudinal support beam 10 is constructed as a chassis frame of a 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 10, and are connected and supported by the strip structure of the longitudinal support beam 10;

[0055] An opening 101a is provided at the end of the longitudinal support beam 10 , and the opening 101a is connected to the inner cavity of the longitudinal support beam 10 ; in addition, the frame 100 is connected to the seat 210 through the lifting structure 300 , and the lifting structure 300 can drive the seat 210 to rise and fall above the frame 100 .

[0056] In this embodiment, a battery pack 50 is installed in the inner cavity of the longitudinal support beam 10. When the lifting structure 300 drives the seat 210 to the lowest position, the user can maintain a sitting position, bend over and face the opening 101a, and insert the battery pack 50 into the inner cavity of the longitudinal support beam 10 along the direction of the opening 101a to complete the assembly, or, through the opening 101a, longitudinally pull the battery pack 50 out of the inner cavity of the longitudinal support beam 10 to achieve disassembly, wherein the insertion path and the extraction path of the battery pack 50 are both located on the central axis S of the longitudinal support beam 10.

[0057] In this embodiment, the longitudinal support beam 10 adopts a strip structure design, which reduces the overall weight of the frame, making the vehicle lighter, easier to carry and operate. In addition, the design of the battery pack 50 built into the longitudinal support beam 10 optimizes the center of gravity distribution of the vehicle, reduces the risk of shaking and rollover of the vehicle during driving, and further improves driving stability and safety.

[0058] The battery pack 50 is integrated into the inner cavity of the longitudinal support beam 10, and is designed to be installed by insertion and removed by pulling out through the opening 101a. The user can easily replace the battery by bending over in a sitting position. The user does not need to get off the vehicle and squat to replace the battery pack, which significantly improves the convenience and comfort of operation and is very friendly to users with inconvenient legs and feet.

[0059] The battery pack 50 is built into the inner cavity of the longitudinal support beam 10, making full use of the space above the frame 100 and avoiding the waste of space caused by the separation of the battery and the frame in the traditional design. This integrated design not only optimizes the overall layout of the vehicle, but also lowers the center of gravity of the vehicle and improves driving stability.

[0060] Further, refer to Figure 3 , Figure 4 A pedal 40 is installed at one end of the longitudinal support beam 10. The pedal 40 is installed at the end of the longitudinal support beam 10 by rotation. When the pedal 40 is in the unfolded state, it can limit the withdrawal path of the battery pack 50. When the pedal 40 is in the folded or semi-folded state, the limiting state of the withdrawal path of the battery pack 50 is released.

[0061] Specifically, the pedal 40 includes a pedal body 401, an articulated arm 402 connected to the pedal body 401, and an end of the articulated arm 402 is articulated to the longitudinal support beam 10, wherein a hollow portion 403 is provided on the pedal body 401;

[0062] When the pedal body 401 is in the unfolded state, the surface of the pedal body 401 intersects with the line of the extraction path of the battery pack 50, and the pedal body 401 limits the extraction path of the battery pack;

[0063] When the pedal body 401 is in a folded or semi-folded state, the hollow portion 403 is located on one side of the opening 101a and corresponds to the end of the battery pack 50. The hollow portion 403 forms an escape space for the battery pack 50 on the withdrawal path, and the limiting state of the pedal body 401 on the withdrawal path of the battery pack 50 is released.

[0064] Further, refer to Figures 5 to 11 A buckle assembly 60 is installed on the battery pack 50. After the battery pack 50 is inserted into the inner cavity of the longitudinal support beam 10, the buckle assembly 60 can position the battery pack 50.

[0065] The buckle assembly 60 includes:

[0066] The buckle body 601 is slidably mounted inside the battery pack 50 and one end of the buckle body extends from the surface of the battery pack 50, and the extended end is the buckle end 601a. ​​After the buckle body 601 is installed in the battery pack 50, it is axially limited and can only slide longitudinally in the battery pack 50;

[0067] A first support spring 602, which is installed inside the battery pack 50, with one end supporting the buckle body 601 and the other end supporting the inside of the battery pack 50;

[0068] An unlock button 603 slidably mounted on the end of the battery pack 50 ;

[0069] A second support spring 604, one end of which supports the unlocking button 603 and the other end of which is supported inside the battery pack 50;

[0070] The first support spring 602 and the second support spring 604 are installed perpendicularly in the battery pack 50, wherein the buckle body 601 has an inclined surface 601b, and the inner side of the unlocking button 603 is provided with an extrusion portion 603a, and the end of the extrusion portion 603a is preferably an arc-shaped end, and the end of the extrusion portion 603a is close to the inclined surface 601b and contacts the inclined surface 601b. When the first support spring 602 and the second support spring 604 are in a normal installation state, the buckle end 601a of the buckle body 601 extends from the surface of the battery pack 50 and contacts the longitudinal support spring 604. The inner wall of the support beam 10 is engaged to achieve locking. When the battery pack 50 needs to be removed, the locking state of the buckle assembly 60 needs to be released. During the release operation, a person manually presses the unlocking button 603, and the second support spring 604 is compressed. The unlocking button 603 drives the extrusion part 603a to squeeze the inclined surface 601b. After the inclined surface 601b is squeezed, the buckle body 601 will move downward in the battery pack 50, and the buckle end 601a of the buckle body 601 will retract from the surface of the battery pack 50. At this time, the locking state between the battery pack 50 and the longitudinal support beam 10 is released.

[0071] In some embodiments, a protective cover 70 is installed at the opening 101 a , and the protective cover 70 is located at one end of the battery pack 50 .

[0072] Therefore, after the battery pack 50 is installed in the inner cavity of the longitudinal support beam 10, the battery pack 50 is first locked and positioned by the buckle assembly 60, and then protected and limited by the protective cover 70 on one side thereof. Finally, the unfolded pedal 40 limits the withdrawal path of the battery pack 50. Even if the buckle assembly 60 fails or becomes loose, the installed battery pack 50 cannot be removed from the longitudinal support beam 10. The present application is equivalent to achieving a triple limiting effect on the installed battery pack 50 through the buckle assembly 60, the protective cover 70 and the pedal 40, which effectively avoids the problem of the battery pack 50 accidentally falling due to the failure or loosening of the positioning buckle.

[0073] Further, refer to Fig.12 The mobility vehicular vehicle 200 in which the skeleton 100 of the present application is located includes a driving wheel assembly 20, a supporting wheel assembly 30, and a skeleton 100 connected between the driving wheel assembly 20 and the supporting wheel assembly 30. A battery pack is installed inside the skeleton 100, and the structure of the skeleton 100 is as shown in the above embodiment.

[0074] A seat 210 is installed above the frame 100, and the frame 100 is connected to the seat 210 through a lifting structure 300. The opening 101a of the longitudinal support beam 100 is located below the opening side 210a of the seat 210. After the battery pack is inserted into the longitudinal support beam 100, the battery pack is located directly below the seat 210. The battery pack is built into the inner cavity of the longitudinal support beam 10, making full use of the space above the frame 100 and avoiding the space waste caused by the separation of the battery and the frame in the traditional design. This integrated design not only optimizes the overall layout of the vehicle, but also lowers the center of gravity of the vehicle and improves driving stability.

[0075] When the user bends over in a sitting position on the mobility scooter and faces the opening 101a, the user maintains the sitting position and can insert the battery pack into the inner cavity of the longitudinal support beam 10 through the opening 101a after bending over. Alternatively, the user maintains the sitting position and can remove the battery pack from the inner cavity of the longitudinal support beam 10 through the opening 101a after bending over, wherein the insertion path and the extraction path of the battery pack are both located on the central axis S of the longitudinal support beam 10.

[0076] Further, in order to explain the lifting principle of the seat 210 in detail, the lifting structure 300 is described below, specifically as follows:

[0077] Reference Figures 13 to 17 The lifting structure 300 includes a bearing seat 11, 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 10, one end of the posture adjustment arm 12 is connected to the longitudinal support beam 10, 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;

[0078] 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 longitudinal support beam 10, and the displacement compensation arm 14 is suitable for compensating the horizontal displacement of the bearing seat 11 during the lifting process;

[0079] The extension direction of the lifting arm 13 and the extension direction of the displacement compensation arm 14 form a cross angle, and the extension direction of the posture adjustment arm 12 and the extension direction of the lifting arm 13 form a cross angle.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] In addition, one end of the posture adjustment arm 12 is hinged to the longitudinal support beam 10, 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 bearing seat 11 is always in a horizontal state. In this way, when the lifting arm drives the bearing seat to lift or lower, the bearing seat 11 is always in a horizontal state without tilting.

[0084] Further, refer to Fig.13 , Fig.15 , Fig.16 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.

[0085] In addition, one end of the lifting arm 13 away from the posture adjustment arm 12 is hinged to the bearing seat 11, a third rotating shaft 101 and a fourth rotating shaft 102 are passed through the longitudinal support beam 10, one end of the displacement compensation arm 14 away from the lifting arm 13 is hinged to the third rotating shaft 101, and one end of the posture adjustment arm 12 away from the lifting arm 13 is hinged to the fourth rotating shaft 102.

[0086] The lifting structure of the present application, when actually used, has the following specific principles:

[0087] Reference Fig.13 , Figures 18 to 20 When 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 continuously. Since the lifting drive 15 is pushed in an oblique pushing 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 13 The bearing seat 11 at the end generates a lifting displacement, thereby realizing the lifting action of the bearing seat 11. During the lifting process of the bearing seat 11, in order to reduce the horizontal movement amplitude of the bearing seat 11, a displacement compensation arm 14 is hinged between the longitudinal support beam 10 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.

[0088] 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.

[0089] 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 bearing seat 11 is always in a horizontal state. Specifically, one end of the posture adjustment arm 12 is hinged to the longitudinal support beam 10, 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.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] In addition, the posture adjustment arm 12 is provided with an avoidance portion 121 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 swing and adjust smoothly.

[0094] 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:

[0095] 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.

[0096] 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.

[0097] 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:

[0098] 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.

[0099] 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.

[0100] Further, refer to Fig.16 , Fig.17There 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.

[0101] 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.

[0102] 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 .

[0103] Furthermore, the posture adjustment arm 12 is provided with an avoidance portion 121 corresponding to the first fixed axis 17, and the avoidance portion 121 is configured to prevent the posture adjustment arm 12 from touching the first fixed axis 17 during the rotation process. In the present embodiment, the avoidance portion 121 is designed as an arc-shaped opening structure. When the entire lifting structure is lifted or lowered, the displacement compensation arm 14 is swinging, and the first fixed axis 17 will also swing therewith. The arc-shaped opening structure of the avoidance portion 121 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.

[0104] 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.

[0105] Furthermore, the lifting structure of the present application is arranged at a single-side position below the bearing seat 11, so that the space between the longitudinal support beam 10 and the bearing seat 11 can be increased, and the space can be effectively utilized.

[0106] 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 with 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 skeleton comprising: 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; It is characterized in that the longitudinal support beam is constructed as a chassis frame of a 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 of the longitudinal support beam; An opening is provided at the end of the longitudinal support beam, and the opening is communicated with the inner cavity of the longitudinal support beam; The frame is connected to the seat via a lifting structure, and the lifting structure is suitable for driving the seat to rise and fall above the frame; A battery pack is installed in the inner cavity of the longitudinal support beam. When the lifting structure drives the seat to the lowest position, the user can maintain a sitting position, bend over and face the opening, and insert the battery pack into the inner cavity of the longitudinal support beam along the direction of the opening to complete the assembly, or, pull the battery pack out longitudinally from the inner cavity of the longitudinal support beam through the opening to achieve disassembly.

2. The skeleton according to claim 1, characterized in that A pedal is rotatably mounted on one end of the longitudinal support beam. When the pedal is in an unfolded state, it can limit the withdrawal path of the battery pack. When the pedal is in a folded or semi-folded state, the limiting state of the withdrawal path of the battery pack is released.

3. The skeleton according to claim 2, characterized in that: The insertion path and the extraction path of the battery pack are both located on the central axis of the longitudinal support beam.

4. The skeleton according to claim 2, characterized in that: The pedal comprises a pedal body, an articulated arm connected to the pedal body, an end of the articulated arm being articulated to the longitudinal support beam, wherein a hollow portion is provided on the pedal body; When the pedal body is in the unfolded state, the surface of the pedal body intersects with the line where the battery pack extraction path is located, and the pedal body limits the battery pack extraction path; When the pedal body is in a folded or semi-folded state, the hollow portion forms an escape space for the battery pack on the extraction path, and the limiting state of the extraction path of the battery pack by the pedal body is released.

5. The skeleton according to claim 1, characterized in that: A buckle assembly is installed on the battery pack, and after the battery pack is inserted into the inner cavity of the longitudinal support beam, the buckle assembly is suitable for positioning the battery pack.

6. The skeleton according to claim 5, characterized in that The buckle assembly comprises: A buckle body, which is slidably mounted inside the battery pack and has one end extending from a surface of the battery pack; A first support spring, which is installed inside the battery pack, one end of which supports the buckle body and the other end of which supports the inside of the battery pack; An unlocking button slidably mounted on an end of the battery pack; a second support spring, one end of which supports the unlocking button and the other end of which supports the interior of the battery pack; Among them, the buckle body has an inclined surface, and the inner side of the unlocking button is provided with an extrusion part, the end of the extrusion part is close to the inclined surface and contacts the inclined surface, and when the unlocking button drives the extrusion part to squeeze the inclined surface, the end of the buckle body retracts from the surface of the battery pack.

7. The skeleton according to claim 6, characterized in that The first support spring and the second support spring are installed in a perpendicular direction in the battery pack.

8. The skeleton according to claim 1, characterized in that A protective cover is installed at the opening, and the protective cover is located at one side of the end of the battery pack.

9. A vehicle for commuting, characterized in that: The invention comprises a driving wheel assembly, a supporting wheel assembly and a skeleton as claimed in claims 1 to 8 connected between the driving wheel assembly and the supporting wheel assembly.

10. The mobility mobilization vehicle according to claim 9, characterized in that: A seat is installed above the frame, and the opening of the longitudinal support beam is located below the opening side of the seat. After the battery pack is inserted into the longitudinal support beam, the battery pack is located directly below the seat.

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