Lifting structure and scooter

Abstract

The invention discloses a lifting structure and a scooter. The problems that in the prior art, in the lifting process of a seat of a scooter, the horizontal displacement amplitude is too large, and the seat is inclined are solved. The lifting structure comprises a framework, a bearing seat, a posture adjusting arm, a lifting arm, a displacement compensation arm and a lifting driving piece. Wherein the bearing seat is arranged above the framework, one end of the posture adjusting arm is connected with the framework, and the other end is connected with the mounting seat; one end of the lifting arm is connected with the posture adjusting arm, and the other end is connected with the bearing seat; and one end of the displacement compensation arm is hinged with the lifting arm and the other end is hinged with the framework. After the lifting driving piece is pushed out, the displacement compensation arm hinged to the lifting arm can swing, the swing direction of the displacement compensation arm is opposite to the horizontal movement direction of the lifting arm and the bearing seat, and in the reverse swing process of the displacement compensation arm, the horizontal displacement of the bearing seat can be compensated. And therefore, the horizontal movement amplitude of the bearing seat in the lifting process is reduced.

Description

Technical Field

[0001] The invention relates to a lifting structure and a walking-replacing vehicle. 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] For example, an electric scooter is a means of transportation designed specifically for the elderly. It usually has features such as a larger seat, a comfortable suspension system, and low-speed travel to meet the safety and comfort needs of the elderly when traveling.

[0004] 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 getting 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 problems during the seat lifting process: the available space under the seat is small, the horizontal displacement during the seat lifting process is too large, and the seat is tilted. Summary of the invention

[0005] The present invention aims to provide a lifting structure and a walking-replacing vehicle to solve the above technical problems.

[0006] In view of this, the present invention provides a lifting structure, comprising: skeleton; Bearing seat; The posture adjustment arm has one end connected to the frame and the other end connected to the mounting seat; the posture adjustment arm is suitable for adjusting the tilt posture of the bearing seat during the lifting process; A lifting arm, one end of which is connected to the attitude adjustment arm, 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 frame; the displacement compensation arm is suitable for compensating for the horizontal displacement of the bearing seat during the lifting process; A lifting drive member is installed between the displacement compensation arm and the lifting arm, and is used to control the lifting of one end of the lifting arm close to the bearing seat, wherein the lifting drive member is installed in an inclined manner for oblique pushing, and the lifting drive member 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 relative to the horizontal plane, so that the pushing force of the electric push rod can be decomposed into the lifting force of the end of the lifting arm; 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.

[0007] Through the above technical solution, when the bearing seat rises, the driving rod of the lifting drive extends out to control the lifting arm to lift up the end close to the bearing seat. Since the lifting drive adopts an oblique pushing method to push, from a mechanical point of view, the pushing force of the lifting drive is decomposed into horizontal thrust and longitudinal thrust. After the horizontal thrust is applied to the lifting arm, the lifting arm will produce a horizontal extension displacement, which will inevitably drive the bearing seat at the end of the lifting arm to produce a horizontal displacement. At the same time, after the longitudinal thrust is applied to the lifting arm, the lifting arm will produce a longitudinal lifting displacement, which will drive the bearing seat at the end of the lifting arm to produce a lifting displacement, thereby realizing the bearing The lifting action of the seat. During the lifting process of the bearing seat, in order to reduce the horizontal movement range of the bearing seat, a displacement compensation arm is hinged between the frame and the lifting arm. After the displacement compensation arm is installed and the lifting drive is pushed out, the displacement compensation arm hinged with the lifting arm will swing. The swinging direction of the displacement compensation arm is opposite to the horizontal movement direction of the lifting arm and the bearing seat. During the swinging process of the displacement compensation arm in the opposite direction, the horizontal displacement of the bearing seat can be compensated, thereby reducing the horizontal movement range of the bearing seat during the lifting process. Similarly, when the lifting drive drives the bearing seat to descend, the displacement compensation arm can also play a role in horizontal displacement compensation; In addition, one end of the posture adjustment arm is connected to the frame, and the other end is connected to the mounting seat and hinged to the end of the lifting arm. When the lifting drive controls the lifting arm to lift or lower, the posture adjustment arm can adjust the swinging posture of the lifting arm to ensure that the end of the lifting arm close to the bearing seat is always in a horizontal state. In this way, when the lifting arm drives the bearing seat to lift or lower, the bearing seat is always in a horizontal state without tilting.

[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] Through the above technical scheme, the first fixed shaft and the second fixed shaft are mainly used for the installation of the lifting drive member, and the linkage between the displacement compensation arm and the lifting arm is realized. At the same time, the two ends of the lifting drive member are rotatably connected to the first fixed shaft and the second fixed shaft respectively, so as to facilitate the self-adjustment of the installation angle of the lifting drive member itself. Specifically, after the lifting drive member is pushed out, the displacement compensation arm hinged to the lifting arm will swing, and the swinging direction of the displacement compensation arm is opposite to the horizontal movement direction of the lifting arm and the bearing seat. During the swinging of the displacement compensation arm in the opposite direction, the lifting drive member will be driven to swing in the opposite direction through the first fixed shaft. The lifting drive member drives the lifting arm to swing in the direction of the displacement compensation arm through the connected second fixed shaft, thereby further realizing the horizontal displacement compensation function of the bearing seat at the end of the lifting arm, thereby reducing the horizontal movement amplitude of the bearing seat during the lifting process.

[0010] Furthermore, when the lifting drive pushes the lifting arm to lift or lower, the lifting arm swings around its hinge point, and the posture adjustment arm can sense the swing angle of the lifting arm through its hinge point with the lifting arm, and adjust the posture of the lifting arm through its own swing; Among them, the swing direction of the attitude adjustment arm is opposite to the swing direction of the lifting arm. This reverse swing can offset the tilting tendency of the lifting arm during the lifting process.

[0011] Furthermore, when the lifting drive member pushes the lifting arm to lift or lower, the lifting arm swings around its hinge point, and when the lifting arm generates horizontal displacement, the displacement compensation arm offsets the horizontal displacement of the lifting arm by swinging in the opposite direction.

[0012] 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 lifting arm and the posture adjustment arm are hinged to the first rotating shaft, and the lifting arm and the displacement compensation arm are hinged to the second rotating shaft.

[0013] Furthermore, the ends of the lifting arm and the posture adjustment arm are hinged to the first rotating shaft, and the end of the displacement compensation arm is hinged to the second rotating shaft, wherein the hinge points of the first rotating shaft and the second rotating shaft with the lifting arm do not overlap.

[0014] 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 frame, 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.

[0015] Furthermore, there are multiple groups of lifting arms, and adjacent lifting arms are hinged via a first linkage rocker arm; A plurality of displacement compensation arms are provided, and adjacent displacement compensation arms are hinged via a second linkage rocker arm.

[0016] Through the above technical solution, when the lifting drive controls the lifting of the supporting seat, the lifting arm and the articulated displacement compensation arm will also swing. Multiple groups of swinging lifting arms are synchronized through the first coupling rocker arm, and multiple groups of swinging displacement compensation arms are synchronized through the second coupling rocker arm. This can improve the overall strength of the entire lifting structure.

[0017] Furthermore, the extension direction of the lifting arm forms an intersection angle with the extension direction of the displacement compensation arm, the extension direction of the posture adjustment arm forms an intersection angle with the extension direction of the lifting arm, and the posture adjustment arm is provided with an avoidance portion corresponding to the first fixed axis, and the avoidance portion is configured to prevent the posture adjustment arm from touching the first fixed axis during rotation.

[0018] Furthermore, the lifting arms are located on both sides of the lifting drive member, and each lifting arm is equipped with a corresponding displacement compensation arm.

[0019] Furthermore, the lifting structure is arranged at a single side position below the bearing seat.

[0020] Compared with the prior art, the beneficial technical effects of the technical solution of the present invention are: 1. The lifting structure is provided with a displacement compensation arm. After the lifting drive member is pushed out, the displacement compensation arm hinged to the lifting arm will swing. The swing direction of the displacement compensation arm is opposite to the horizontal movement direction of the lifting arm and the bearing seat. During the swinging in the opposite direction of the displacement compensation arm, the horizontal displacement of the bearing seat can be compensated, thereby reducing the horizontal movement amplitude of the bearing seat during the lifting process; 2. A first fixed shaft is provided on the displacement compensation arm of the lifting structure, and a second fixed shaft is provided on 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. During the reverse swinging of the displacement compensation arm, the lifting drive member is driven to swing in the reverse direction through the first fixed shaft. The lifting drive member drives the lifting arm to swing in the direction of the displacement compensation arm through the connected second fixed shaft, thereby further realizing the horizontal displacement compensation function of the bearing seat at the end of the lifting arm, thereby reducing the horizontal movement amplitude of the bearing seat during the lifting process; 3. The lifting structure is arranged at a single side position below the bearing seat, so that the space between the frame and the bearing seat can be increased and the space can be effectively utilized; 4. Since the lifting structure is installed at a single-side position below the bearing seat, in order to improve its supporting strength during the lifting process, the present application is provided with multiple groups of lifting arms, and adjacent lifting arms are hinged by a first linkage rocker arm, and multiple groups of displacement compensation arms are provided, and adjacent displacement compensation arms are hinged by a second linkage rocker arm. When the lifting drive member controls the lifting and lowering of the bearing seat, multiple groups of swinging lifting arms are synchronously linked through the first linkage rocker arm, and multiple groups of swinging displacement compensation arms are synchronously linked through the second linkage rocker arm, thereby improving the overall strength of the entire lifting structure; 5. The end of the lifting arm of the lifting structure is hinged with a posture adjustment arm. When the lifting drive controls the lifting arm to lift or lower, the posture adjustment arm can adjust the swing posture of the lifting arm to ensure that the end of the lifting arm close to the bearing seat is always in a horizontal state. In this way, when the lifting arm drives the bearing seat to lift or lower, the bearing seat is always in a horizontal state without tilting; 6. The lifting drive of the lifting structure adopts stepless speed regulation, the lifting continuity of the bearing seat is good, and the lifting speed can be adjusted.

[0021] In addition, the present invention provides a mobility mobilization vehicle, comprising the above-mentioned lifting structure.

[0022] Furthermore, a seat is installed on the supporting seat of the mobility mobilization vehicle, wheels are installed on the frame, and at least one wheel is equipped with an electric motor.

[0023] Compared with the prior art, the beneficial technical effects of the technical solution of the mobility mobilization vehicle with a lifting structure provided by the present invention are as described above and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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.

[0025] Figure 1 : Schematic diagram of the lifting structure (in the raised state) of the specific embodiment 1 of the present invention; Figure 2 : A schematic top view of a lifting structure of a specific embodiment 1 of the present invention; Figure 3 : Figure 2 Schematic diagram of the cross section along line AA; Figure 4 : A schematic diagram of the partial structure of the lifting structure of the specific embodiment 1 of the present invention; Figure 5: Schematic diagram of the partial structure (from another angle) of the lifting structure of the specific embodiment 1 of the present invention; Figure 6 : A schematic diagram of a lifting structure in a folded state in a specific embodiment 1 of the present invention; Figure 7 : A side view of the lifting structure of the specific embodiment 1 of the present invention when it is in a raised state; Figure 8 : A side view of the lifting structure of the first embodiment of the present invention when it is in a folded state; Fig. 9 : A schematic diagram of a mobility-replacement vehicle according to embodiment 2 of the present invention; Fig.10 : A side view of a mobility assisted vehicle (the wheelchair is in a raised state) according to a second specific embodiment of the present invention; Fig.11 : A side view of a mobility assisted vehicle (the wheelchair is in a falling state) according to a second specific embodiment of the present invention; Fig.12 : Schematic diagram of the front and rear displacement changes of the wheelchair of the walking-replacement vehicle during the lifting process of the specific embodiment 2 of the present invention.

[0026] Description of reference numerals: 100, lifting structure; 10, frame; 101, third rotating shaft; 102, fourth rotating shaft; 11, bearing seat; 12, posture adjustment arm; 121, avoidance portion; 13, lifting arm; 131, first linkage rocker arm; 14, displacement compensation arm; 141, second linkage rocker arm; 15, lifting drive member; 16, mounting seat; 161, first mounting portion; 162, second mounting portion; 163, first rotating shaft; 164, second rotating shaft; 17, first fixed shaft; 18, second fixed shaft; 200. Transportation vehicle; 20. Wheelchair; 21. Wheel; 22. Electric motor. DETAILED DESCRIPTION

[0027] 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. Example 1

[0028] Reference Figures 1 to 5 A lifting structure 100 includes a frame 10, 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 frame 10, one end of the posture adjustment arm 12 is connected to the frame 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; 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 frame 10, 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 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.

[0029] 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.

[0030] 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.

[0031] In addition, one end of the posture adjustment arm 12 is hinged to the frame 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 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.

[0032] Further, refer to Figure 1 , Figure 3 , Figure 4A 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.

[0033] 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 skeleton 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.

[0034] The lifting structure of the present application, when actually used, has the following specific principles: Reference Figure 1 , Figures 6 to 8 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 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 frame 10 and the lifting arm 13. After the lifting drive 15 is pushed out, the displacement compensation arm 14 hinged with 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 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.

[0035] 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 frame 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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 be swung and adjusted smoothly.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] Further, refer to Figure 4 , Figure 5There 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.

[0045] 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.

[0046] 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 .

[0047] 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.

[0048] 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.

[0049] 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 frame 10 and the bearing seat 11 can be increased and the space can be effectively utilized. Example 2

[0050] Reference Figures 9 to 11Based on the same technical concept, an embodiment of the present application provides a mobility vehicle 200. Similar to the existing mobility vehicles, the mobility vehicle 200 of this embodiment includes the lifting structure 100, seats 20 and wheels 21 in the above-mentioned embodiment 1, wherein at least one wheel 21 is equipped with an electric motor 22, the seat 20 is mounted on the bearing seat 11 of the lifting structure 100, and the wheel 21 is mounted on the frame 10 of the lifting structure 100.

[0051] Since the mobility commuter vehicle 200 in this embodiment is equipped with the above-mentioned lifting structure 100, it has the corresponding technical effect of the above-mentioned lifting structure 100. When the lifting structure 100 controls the lifting and lowering of the seat 20 of the mobility commuter vehicle 200, stepless speed regulation can be achieved, and the lifting and lowering are smooth without any jamming. In addition, during the lifting and lowering process of the seat 20, the mobility commuter vehicle 200 has the functions of front and rear displacement compensation and seat tilt posture adjustment. Moreover, the lifting structure 100 is installed in a single-sided position below the seat 20, and the available space below the seat 20 is relatively large.

[0052] Reference Fig.12 After the seat 20 of the mobility scooter 200 is lifted by the lifting structure 100, the central axis of the seat 20 is S1. After the seat 20 is lowered by the lifting structure 100, the central axis of the seat 20 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 20. The front and rear displacement difference of the seat 20 during the lifting process is very small, and the user experience is good.

[0053] In summary, the present application ensures that the support base 11 always remains horizontal during the lifting process through real-time adjustment of the posture adjustment arm 12; and reduces the horizontal movement amplitude of the support base 11 during the lifting process through the reverse swing of the displacement compensation arm 14.

[0054] Multiple groups of lifting arms 13 and displacement compensation arms 14 are synchronously linked by means of a linkage rocker arm, thereby improving the overall strength of the lifting structure.

[0055] The lifting structure 100 is arranged at a single side position below the bearing seat 11 to increase the available space between the frame 10 and the bearing seat 11; the lifting drive member 15 adopts stepless speed regulation, and the lifting process is continuous and stable.

[0056] 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 lifting structure, characterized in that: include: Skeleton (10); A bearing seat (11); A posture adjustment arm (12), one end of which is connected to the frame (10) and the other end of which is connected to a mounting seat (16); A lifting arm (13), one end of which is connected to the posture adjustment arm (12) through the mounting seat (16), and the other end of which is connected to the bearing seat (11); A displacement compensation arm (14), one end of which is hinged to the lifting arm (13), and the other end of which is hinged to the frame (10); A lifting drive member (15) is installed between the displacement compensation arm (14) and the lifting arm (13). When the lifting drive member (15) drives the displacement compensation arm (14) and the lifting arm (13) to relatively stretch or retract, the lifting arm (13) drives the bearing seat (11) to rise or fall; When the bearing seat (11) is raised and lowered, the posture adjustment arm (12) can adjust the tilting posture of the bearing seat (11) during the lifting process, so that the bearing seat (11) remains horizontal; At the same time, the displacement compensation arm (14) can compensate for the horizontal displacement of the support base (11) during the lifting process, so as to reduce the horizontal movement amplitude of the support base (11).

2. The lifting structure according to claim 1, characterized in that: A first fixed shaft (17) is passed through the displacement compensation arm (14), and a second fixed shaft (18) is passed through the lifting arm (13); one of the first fixed shaft (17) and the second fixed shaft (18) 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).

3. The lifting structure according to claim 2, characterized in that: When the lifting drive member (15) pushes the lifting arm (13) to lift or lower, the lifting arm (13) swings around its hinge point, and 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) through its own swing; The swing direction of the posture adjustment arm (12) is opposite to the swing direction of the lifting arm (13), and this reverse swing can offset the tilting tendency of the lifting arm (13) during the lifting process.

4. The lifting structure according to claim 2, characterized in that: When the lifting drive member (15) pushes the lifting arm (13) to lift or lower, the lifting arm (13) swings around its hinge point, and 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.

5. The lifting structure according to claim 1, characterized in that: The mounting seat (16) is provided with a first mounting portion (161) and a second mounting portion (162); 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 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).

6. The lifting structure according to claim 5, characterized in that: The ends of the lifting arm (13) and the posture adjustment arm (12) are hinged to the first rotating shaft (163), and the end of the displacement compensation arm (14) is 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 overlap.

7. The lifting structure according to claim 5, characterized in that: 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 provided on the frame (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).

8. The lifting structure according to any one of claims 1 to 7, characterized in that: The lifting arms (13) are provided in multiple groups, and adjacent lifting arms (13) are hingedly connected via a first linkage rocker arm (131); The displacement compensation arms (14) are provided in multiple groups, and adjacent displacement compensation arms (14) are hingedly connected via second linkage rocking arms (141).

9. The lifting structure according to claim 2, characterized in that: The extension direction of the lifting arm (13) forms an intersecting angle with the extension direction of the displacement compensation arm (14); the extension direction of the posture adjustment arm (12) forms an intersecting angle with the extension direction of the lifting arm (13); the posture adjustment arm (12) is provided with an avoidance portion (121) corresponding to the first fixed axis (17); the avoidance portion (121) is configured to prevent the posture adjustment arm (12) from contacting the first fixed axis (17) during rotation.

10. The lifting structure according to claim 1, characterized in that: The lifting arms (13) are located on both sides of the lifting drive member (15), and each of the lifting arms (13) is equipped with a corresponding displacement compensation arm (14).

11. A vehicle for commuting, characterized in that: The invention comprises the lifting structure according to any one of claims 1 to 10.

12. The mobility vehicle according to claim 11, characterized in that: A seat (20) is mounted on the support seat (11), wheels (21) are mounted on the frame (10), and at least one of the wheels (21) is equipped with an electric motor (22).

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