Wheelchair scooter motor supporting and buffering structure

Abstract

The utility model discloses a wheelchair scooter motor supporting and buffering structure, which belongs to the technical field of wheelchair scooter structures and comprises a rear axle component, driving components are arranged on two sides of the rear axle component, and a balancing frame is fixedly connected between the two driving components. An elastic assembly is further arranged on the driving assembly, and the elastic assembly is further connected to the frame body. According to the scheme, the two rear wheels are rigidly connected into a whole through the balancing frame, namely, the two rear wheels are located on the plane or line where the balancing frame is located, and when the wheels are suspended, the two rear wheels can swing relatively along the balancing frame, so that automatic leveling of the wheels of the wheelchair scooter is achieved, and it is guaranteed that the four wheels of the wheelchair scooter are all in the ground attaching state; wherein the elastic assembly plays a role in buffering the swing of the balancing frame or the rear wheels and plays a role in compensating the swing amplitude of the rear wheels, so that the stability of the wheels of the wheelchair scooter during automatic leveling is improved.

Description

Technical Field

[0001] The utility model relates to a wheelchair-replacement vehicle structure, and more specifically, to a motor support buffer structure of the wheelchair-replacement vehicle. Background Art

[0002] Existing wheelchairs have three-wheeled and four-wheeled models. In the four-wheeled wheelchair, the four wheels are often independent of each other, especially the rear wheel is driven by an independent driving mechanism. However, in normal use, due to manufacturing errors or uneven roads, only three wheels will be on the ground (the principle of three points determining a plane), while one wheel will be suspended (or in virtual contact with the ground). Since one wheel is suspended, the wheelchair is prone to strong bumps and poor stability.

[0003] For example: Chinese patent announcement number CN216124701U, announcement date March 25, 2022, the name of the utility model is wheelchair scooter and shock-absorbing assembly therefor, the application discloses a wheelchair scooter, including a frame, a shock-absorbing assembly and a front wheel assembly, the shock-absorbing assembly is connected and fixed between the frame and the front wheel assembly, and the shock-absorbing assembly is an elastic leaf spring. This scheme can avoid lateral displacement of the wheel due to the soft connection of the spring without setting a sliding assembly, but this scheme still cannot avoid the situation where the wheel of the wheelchair scooter is suspended, and its stability needs to be further improved. Utility Model Content

[0004] The utility model overcomes the problem of existing four-wheeled wheelchair scooters having wheels hanging in the air, causing the wheelchair scooter to be bumpy and unstable, and provides a motor support buffer structure for the wheelchair scooter. This solution can effectively prevent the wheels of the wheelchair scooter from hanging in the air, thereby improving the stability of the wheelchair scooter.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a motor support buffer structure for a wheelchair scooter, including a rear axle assembly, a driving assembly is arranged on both sides of the rear axle assembly, and a balance frame is fixedly connected between the two driving assemblies; an elastic assembly is also arranged on the driving assembly, and the elastic assembly is also connected to the frame body. In this solution, the driving assemblies on both sides of the rear axle assembly are respectively used to drive the two rear wheels of the wheelchair scooter, so that the two rear wheels are in a relatively independent state, and a balance frame is arranged between the two driving assemblies, so that the two rear wheels are rigidly connected into a whole, that is, the two rear wheels are on the plane or line where the balance frame is located, when the wheels are suspended, the two rear wheels will swing relatively along the balance frame, so as to realize the automatic leveling of the wheelchair scooter wheels, and ensure that the four wheels of the wheelchair scooter are in a ground-contacting state; wherein the elastic assembly has a buffering effect on the swing of the balance frame or the rear wheel, and has a compensating effect on the swing amplitude of the rear wheel, so as to improve the stability of the wheelchair scooter wheels when they are automatically leveled. At the same time, the balance frame connects the left and right drive components into a whole so that the drive wheels are always flush with the ground. Because the left and right drive wheels are on the same plane, the elastic deformation of the elastic component is limited to the deformation along the vehicle's forward direction, while the deformation in the left and right directions of the vehicle is very small, thus avoiding the left and right tilt of the vehicle.

[0006] Preferably, the drive assembly includes a housing, the housing includes a first mounting surface and a second mounting surface, and the first mounting surface and the second mounting surface are arranged at an angle. The first mounting surface and the second mounting surface of the housing of the drive assembly are designed to be angled, which can improve the strength of the housing and improve the connection strength of other components on the housing.

[0007] Preferably, the first mounting surface is arranged horizontally, and the balancing frame is fixedly connected to the first mounting surface. The first mounting surface is used to fix the balancing frame, and the first mounting surface is in a horizontal state, so that the balancing frame will also be in a horizontal state after being installed, which can ensure the leveling effect of the rear wheels on both sides.

[0008] Preferably, the second mounting surface is fixedly connected to the elastic component. When the first mounting surface is in a horizontal state, the second mounting surface is in an inclined state. The second mounting surface is used to support the frame body. The elastic component on the second mounting surface can provide shock absorption and buffering for the frame body on the one hand, and can also provide error compensation effect for leveling the two rear wheels on the other hand.

[0009] Preferably, the driving assembly is connected to a driving wheel, which drives the driving wheel to rotate and is a rear wheel structure of the wheelchair-assisted scooter.

[0010] Preferably, an auxiliary frame is provided on the balancing frame, and a power supply device is provided on the auxiliary frame. The balancing frame also has a supporting function. Specifically, the power supply device is provided in the middle of the balancing frame to support the power supply device, and then the auxiliary frame plays a role of fixing and limiting the power supply device.

[0011] Preferably, auxiliary wheels are arranged at the bottom of the auxiliary frame and near the rear side of the driving assembly. The auxiliary wheels are arranged at the rear side of the driving assembly to prevent the wheelchair from falling backwards. When the wheelchair has a tendency to fall backwards, the auxiliary wheels can further support and slide the wheelchair backwards to prevent the wheelchair from falling.

[0012] Preferably, the wheelchair further comprises a shell, which is arranged on the upper side of the auxiliary frame and the power supply device. The shell can cover the auxiliary frame and the power supply device on the balance frame, protect the balance frame and the power supply device, and improve the aesthetics of the wheelchair.

[0013] Preferably, the elastic component includes a base and an elastic block, and the elastic block is fixed on the base. The base is used to fix the elastic block, and the elastic effect of the elastic block can play a good buffering and shock absorbing role on the rear axle assembly and the whole vehicle, thereby improving the experience of the wheelchair scooter.

[0014] Preferably, the surface of the elastic block is also fixedly connected to the frame body. The elastic block is connected to the frame body, thereby supporting and buffering the frame body, thereby improving the user experience.

[0015] Compared with the prior art, the beneficial effects of the utility model are: (1) the wheels of the wheelchair scooter can realize the automatic leveling function, thereby improving the stability of the wheelchair scooter; (2) the wheelchair scooter has a good buffering effect, which can improve the user experience; (3) it has an anti-dumping structure to improve the safety of use; (4) it has a simple structure, low manufacturing cost, and higher cost performance and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a rear axonometric view of the whole vehicle of the utility model.

[0017] Figure 2 It is a bottom view of the whole vehicle of the utility model.

[0018] Figure 3 It is a partial exploded view of the rear axle assembly of the utility model.

[0019] Figure 4 This is a partial exploded view of the rear axle assembly of the utility model from another perspective.

[0020] Figure 5This is an exploded view of the rear axle assembly of the utility model.

[0021] Figure 6 This is a schematic diagram of the assembly of the balance frame and the drive assembly of the utility model.

[0022] Figure 7 This is an axonometric drawing of the entire vehicle of the present utility model.

[0023] In the figure: 1. rear axle assembly, 2. drive assembly, 2.1. housing, 2.2. drive motor, 2.3. drive wheel, 3. balance frame, 4. elastic component, 4.1. base, 4.2. elastic member, 4.3. connecting member, 5. first mounting surface, 6. second mounting surface, 6.1. slot, 7. auxiliary frame, 7.1. corner slot, 8. power supply device, 9. auxiliary wheel, 10. housing, 10.1. arc cover, 10.2. through hole, 10.3. notch, 10.3.1. housing fixing hole, 11. frame body, 12. fixed shaft. DETAILED DESCRIPTION

[0024] The technical solution of the utility model is further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0025] Example 1: Figure 1 and Figure 2 The motor support buffer structure of a wheelchair scooter shown in the figure includes a rear axle assembly 1, which is located at the rear side of the chassis of the wheelchair scooter. The rear axle assembly 1 includes a drive assembly 2. There are two drive assemblies 2, which are located on the left and right sides of the rear axle assembly 1 respectively. The drive assembly 2 includes a drive motor 2.2 and a drive wheel 2.3 connected to the drive motor 2.2. Each drive wheel 2.3 is individually equipped with a drive motor 2.2, so that the two drive wheels 2.3 are independent of each other. Figure 3 As shown, the drive assembly 2 also includes a shell 2.1, which is a metal frame structure. A horizontal first mounting surface 5 is arranged at the bottom of the shell 2.1, and an inclined second mounting surface 6 is arranged at the rear side of the shell 2.1 (relative to the orientation of the wheelchair vehicle). The first mounting surface 5 and the second mounting surface 6 form an angle design, and the driving motor 2.2 is located within the angle between the first mounting surface 5 and the second mounting surface 6, that is, a stable triangular structure is formed between the first mounting surface 5, the second mounting surface 6 and the driving motor 2.2, that is, the shell 2.1 has high strength and stability.

[0026] A balancing frame 3 is fixedly connected to the bottom of the first mounting surface 5 of the left and right shells 2.1. The two ends of the balancing frame 3 are respectively fixed to the first mounting surfaces 5 of the shells 2.1 on both sides. Specifically, the balancing frame 3 is a long strip plate structure. The two ends of the balancing frame 3 are provided with fixing holes. The first mounting surface 2 is also provided with fixing holes. The balancing frame 3 and the first mounting surface 5 are fixed together by fasteners such as screws, so as to obtain the following: Figure 6 The structure shown.

[0027] Specifically, a corrugated structure or a bending groove is provided on the balance frame 3 along its length direction, so that the balance frame has a certain structural strength in its width direction, and the balance frame 3 is not easy to bend.

[0028] An elastic component 4 is also arranged on the second mounting surface 6. The elastic component 4 includes a base 4.1 and an elastic member 4.2. Specifically, Figure 3 and Figure 6 As shown, a slot 6.1 structure is provided on the second mounting surface 6, the base 4.1 is snapped into the slot 6.1 of the second mounting surface 6, and the base 4.1 and the slot 6.1 are fixedly connected by fasteners such as screws to prevent the base 4.1 from falling off the slot 6.1, and an elastic member 4.2 is fixedly connected to the side of the base 4.1 away from the slot 6.1, and the elastic member 4.2 is a rubber block. Figure 7 As shown, the two rear support points of the frame body 11 directly abut against the left and right elastic members 4.2, and the frame body 11 is also fixedly connected to the elastic members 4.2 to prevent the frame body 11 and the elastic members 4.2 from falling off.

[0029] In this solution, a balance frame 3 is set between the two drive components 2, so that the two drive wheels 2.3 (rear wheels) are rigidly connected into a whole, that is, the two drive wheels 2.3 are on the surface or line where the balance frame 3 is located, so that the positional relationship of the two drive wheels 2.3 is related. When the wheels are suspended in the air, the two drive wheels 2.3 will swing relatively along the balance frame 3, thereby realizing the automatic leveling of the wheelchair wheels and ensuring that the four wheels of the wheelchair are in a ground-contacting state; wherein the elastic component 4 has a buffering effect on the swing of the balance frame 3 or the drive wheel 2.3, and has a compensating effect on the swing amplitude of the drive wheel 2.3, thereby improving the stability of the wheelchair wheels when they are automatically leveled. At the same time, when the vehicle is subjected to force (such as a person riding normally), the elastic member 4.2 undergoes elastic deformation, thereby forming the left and right elastic components 4 with different sizes, to actively adapt to the problem of the four wheels not landing at the same time due to manufacturing errors or uneven road surface.

[0030] Specifically, since three points can determine a plane, if there are manufacturing errors in the four wheels or other connecting structures of the wheelchair, three wheels may be on the ground and one wheel may be suspended in the air; among them, one wheel may be suspended in the air at the front side or the rear side.

[0031] Case 1: The suspended wheel is the front wheel (same for both left and right wheels). When the user sits on the wheelchair or due to the self-weight of the wheelchair, the frame body 11 exerts pressure on the two rear drive wheels 2.3 and the front wheel. Since the front wheel is an independent structure and in contact with the ground, and the two rear drive wheels 2.3 are associated structures, they can swing relative to each other under the action of the balance frame 3 and the elastic member 4.2. Therefore, the two rear drive wheels 2.3 can be adaptively adjusted, so that the suspended wheel on the front is in contact with the ground, that is, the four wheels can be in contact with the ground at the same time, which improves the stability of the wheelchair.

[0032] Case 2: The suspended wheel is the rear wheel (same for both left and right wheels). Since the two independent front wheels are already touching the ground, when the user sits on the wheelchair or due to the weight of the wheelchair, the two rear drive wheels 2.3 are subjected to different forces. The drive wheel touching the ground is subjected to force, while the suspended drive wheel is not subjected to force. Therefore, the drive wheel touching the ground swings upward, and the suspended drive wheel swings downward, so that the two rear drive wheels 2.3 can touch the ground at the same time, improving the stability of the wheelchair.

[0033] Example 2: Figure 1 and Figure 2 The motor support buffer structure of a wheelchair scooter shown in the figure includes a rear axle assembly 1, which is located at the rear side of the chassis of the wheelchair scooter. The rear axle assembly 1 includes a drive assembly 2. There are two drive assemblies 2, which are located on the left and right sides of the rear axle assembly 1 respectively. The drive assembly 2 includes a drive motor 2.2 and a drive wheel 2.3 connected to the drive motor 2.2. Each drive wheel 2.3 is individually equipped with a drive motor 2.2, so that the two drive wheels 2.3 are independent of each other. Figure 3 As shown, the drive assembly 2 also includes a shell 2.1, which is a metal frame structure. A horizontal first mounting surface 5 is arranged at the bottom of the shell 2.1, and an inclined second mounting surface 6 is arranged at the rear side of the shell 2.1 (relative to the orientation of the wheelchair vehicle). The first mounting surface 5 and the second mounting surface 6 form an angle design, and the driving motor 2.2 is located within the angle between the first mounting surface 5 and the second mounting surface 6, that is, a stable triangular structure is formed between the first mounting surface 5, the second mounting surface 6 and the driving motor 2.2, that is, the shell 2.1 has high strength and stability.

[0034] A balancing frame 3 is fixedly connected to the bottom of the first mounting surface 5 of the left and right shells 2.1. The two ends of the balancing frame 3 are respectively fixed to the first mounting surfaces 5 of the shells 2.1 on both sides. Specifically, the balancing frame 3 is a long strip plate structure. The two ends of the balancing frame 3 are provided with fixing holes. The first mounting surface 2 is also provided with fixing holes. The balancing frame 3 and the first mounting surface 5 are fixed together by fasteners such as screws, so as to obtain the following: Figure 6 The structure shown.

[0035] Specifically, a corrugated structure or a bending groove is provided on the balance frame 3 along its length direction, so that the balance frame has a certain structural strength in its width direction, and the balance frame 3 is not easy to bend.

[0036] An elastic component 4 is also arranged on the second mounting surface 6. The elastic component 4 includes a base 4.1 and an elastic member 4.2. Specifically, Figure 3 and Figure 6 As shown, a slot 6.1 structure is provided on the second mounting surface 6, the base 4.1 is snapped into the slot 6.1 of the second mounting surface 6, and the base 4.1 and the slot 6.1 are fixedly connected by fasteners such as screws to prevent the base 4.1 from falling off the slot 6.1, and an elastic member 4.2 is fixedly connected to the side of the base 4.1 away from the slot 6.1, and the elastic member 4.2 is a rubber block. Figure 7 As shown, the two rear support points of the frame body 11 directly abut against the left and right elastic members 4.2, and the frame body 11 is also fixedly connected to the elastic members 4.2 to prevent the frame body 11 and the elastic members 4.2 from falling off.

[0037] In this solution, a balance frame 3 is set between the two drive components 2, so that the two drive wheels 2.3 (rear wheels) are rigidly connected into a whole, that is, the two drive wheels 2.3 are on the surface or line where the balance frame 3 is located, so that the positional relationship of the two drive wheels 2.3 is related. When the wheels are suspended in the air, the two drive wheels 2.3 will swing relatively along the balance frame 3, thereby realizing the automatic leveling of the wheelchair wheels and ensuring that the four wheels of the wheelchair are in a ground-contacting state; wherein the elastic component 4 has a buffering effect on the swing of the balance frame 3 or the drive wheel 2.3, and has a compensating effect on the swing amplitude of the drive wheel 2.3, thereby improving the stability of the wheelchair wheels when they are automatically leveled. At the same time, when the vehicle is subjected to force (such as a person riding normally), the elastic member 4.2 undergoes elastic deformation, thereby forming the left and right elastic components 4 with different sizes, to actively adapt to the problem of the four wheels not landing at the same time due to manufacturing errors or uneven road surface.

[0038] Specifically, since three points can determine a plane, if there are manufacturing errors in the four wheels or other connecting structures of the wheelchair, three wheels may be on the ground and one wheel may be suspended in the air; among them, one wheel may be suspended in the air at the front side or the rear side.

[0039] Case 1: The suspended wheel is the front wheel (same for both left and right wheels). When the user sits on the wheelchair or due to the self-weight of the wheelchair, the frame body 11 exerts pressure on the two rear drive wheels 2.3 and the front wheel. Since the front wheel is an independent structure and in contact with the ground, and the two rear drive wheels 2.3 are associated structures, they can swing relative to each other under the action of the balance frame 3 and the elastic member 4.2. Therefore, the two rear drive wheels 2.3 can be adaptively adjusted, so that the suspended wheel on the front is in contact with the ground, that is, the four wheels can be in contact with the ground at the same time, which improves the stability of the wheelchair.

[0040] Case 2: The suspended wheel is the rear wheel (same for both left and right wheels). Since the two independent front wheels are already touching the ground, when the user sits on the wheelchair or due to the weight of the wheelchair, the two rear drive wheels 2.3 are subjected to different forces. The drive wheel touching the ground is subjected to force, while the suspended drive wheel is not subjected to force. Therefore, the drive wheel touching the ground swings upward, and the suspended drive wheel swings downward, so that the two rear drive wheels 2.3 can touch the ground at the same time, improving the stability of the wheelchair.

[0041] like Figures 3 to 5 As shown, an auxiliary frame 7 is also provided in the middle position of the balancing frame 3. The auxiliary frame 7 is formed by two identical brackets arranged in parallel. A horizontal groove is provided at the bottom of the auxiliary frame 7 to be able to be snap-fitted with the surface of the balancing frame 3, and fixing holes are provided at the connecting positions of the balancing frame 3 and the auxiliary frame 7. The auxiliary frame 7 and the balancing frame 3 can be completely fixed together by fasteners such as screws.

[0042] One side of the auxiliary frame 7 is fixedly connected to the balance frame 3, and the other side is arranged in an inclined manner. The two inclined sections of the auxiliary frame 7 are connected together by a fixed shaft 12, and an auxiliary wheel 9 is rotatably connected to each end of the fixed shaft 12. When the wheelchair scooter is in a horizontal state or a normal practical state, the auxiliary wheel 9 is suspended. The auxiliary wheel 9 is arranged on the rear side of the driving assembly 2 to prevent the wheelchair scooter from falling backward. When the wheelchair scooter has a tendency to fall backward, the auxiliary wheel 9 can further support and slide backward to prevent the wheelchair scooter from falling.

[0043] A V-shaped corner groove 7.1 structure is provided on the upper side of the two parallel brackets of the auxiliary frame 7 for placing the power supply device 8 of the wheelchair scooter. The corner groove 7.1 can play a good role in fixing and limiting the power supply device 8, and the auxiliary frame 7 and the power supply device 8 also need to be fixedly connected with fasteners such as screws.

[0044] Example 3: Figure 1 and Figure 2 The motor support buffer structure of a wheelchair scooter shown in the figure includes a rear axle assembly 1, which is located at the rear side of the chassis of the wheelchair scooter. The rear axle assembly 1 includes a drive assembly 2. There are two drive assemblies 2, which are located on the left and right sides of the rear axle assembly 1 respectively. The drive assembly 2 includes a drive motor 2.2 and a drive wheel 2.3 connected to the drive motor 2.2. Each drive wheel 2.3 is individually equipped with a drive motor 2.2, so that the two drive wheels 2.3 are independent of each other. Figure 3 As shown, the drive assembly 2 also includes a shell 2.1, which is a metal frame structure. A horizontal first mounting surface 5 is arranged at the bottom of the shell 2.1, and an inclined second mounting surface 6 is arranged at the rear side of the shell 2.1 (relative to the orientation of the wheelchair vehicle). The first mounting surface 5 and the second mounting surface 6 form an angle design, and the driving motor 2.2 is located within the angle between the first mounting surface 5 and the second mounting surface 6, that is, a stable triangular structure is formed between the first mounting surface 5, the second mounting surface 6 and the driving motor 2.2, that is, the shell 2.1 has high strength and stability.

[0045] A balancing frame 3 is fixedly connected to the bottom of the first mounting surface 5 of the left and right shells 2.1. The two ends of the balancing frame 3 are respectively fixed to the first mounting surfaces 5 of the shells 2.1 on both sides. Specifically, the balancing frame 3 is a long strip plate structure. The two ends of the balancing frame 3 are provided with fixing holes. The first mounting surface 2 is also provided with fixing holes. The balancing frame 3 and the first mounting surface 5 are fixed together by fasteners such as screws, so as to obtain the following: Figure 6 The structure shown.

[0046] Specifically, a corrugated structure or a bending groove is provided on the balance frame 3 along its length direction, so that the balance frame has a certain structural strength in its width direction, and the balance frame 3 is not easy to bend.

[0047] An elastic component 4 is also arranged on the second mounting surface 6. The elastic component 4 includes a base 4.1 and an elastic member 4.2. Specifically, Figure 3 and Figure 6As shown, a slot 6.1 structure is provided on the second mounting surface 6, the base 4.1 is snapped into the slot 6.1 of the second mounting surface 6, and the base 4.1 and the slot 6.1 are fixedly connected by fasteners such as screws to prevent the base 4.1 from falling off the slot 6.1, and an elastic member 4.2 is fixedly connected to the side of the base 4.1 away from the slot 6.1, and the elastic member 4.2 is a rubber block. Figure 7 As shown, the two rear support points of the frame body 11 directly abut against the left and right elastic members 4.2, and the frame body 11 is also fixedly connected to the elastic members 4.2 to prevent the frame body 11 and the elastic members 4.2 from falling off.

[0048] In this solution, a balance frame 3 is set between the two drive components 2, so that the two drive wheels 2.3 (rear wheels) are rigidly connected into a whole, that is, the two drive wheels 2.3 are on the surface or line where the balance frame 3 is located, so that the positional relationship of the two drive wheels 2.3 is related. When the wheels are suspended in the air, the two drive wheels 2.3 will swing relatively along the balance frame 3, thereby realizing the automatic leveling of the wheelchair wheels and ensuring that the four wheels of the wheelchair are in a ground-contacting state; wherein the elastic component 4 has a buffering effect on the swing of the balance frame 3 or the drive wheel 2.3, and has a compensating effect on the swing amplitude of the drive wheel 2.3, thereby improving the stability of the wheelchair wheels when they are automatically leveled. At the same time, when the vehicle is subjected to force (such as a person riding normally), the elastic member 4.2 undergoes elastic deformation, thereby forming the left and right elastic components 4 with different sizes, to actively adapt to the problem of the four wheels not landing at the same time due to manufacturing errors or uneven road surface.

[0049] Specifically, since three points can determine a plane, if there are manufacturing errors in the four wheels or other connecting structures of the wheelchair, three wheels may be on the ground and one wheel may be suspended in the air; among them, one wheel may be suspended in the air at the front side or the rear side.

[0050] Case 1: The suspended wheel is the front wheel (same for both left and right wheels). When the user sits on the wheelchair or due to the self-weight of the wheelchair, the frame body 11 exerts pressure on the two rear drive wheels 2.3 and the front wheel. Since the front wheel is an independent structure and in contact with the ground, and the two rear drive wheels 2.3 are associated structures, they can swing relative to each other under the action of the balance frame 3 and the elastic member 4.2. Therefore, the two rear drive wheels 2.3 can be adaptively adjusted, so that the suspended wheel on the front is in contact with the ground, that is, the four wheels can be in contact with the ground at the same time, which improves the stability of the wheelchair.

[0051] Case 2: The suspended wheel is the rear wheel (same for both left and right wheels). Since the two independent front wheels are already touching the ground, when the user sits on the wheelchair or due to the weight of the wheelchair, the two rear drive wheels 2.3 are subjected to different forces. The drive wheel touching the ground is subjected to force, while the suspended drive wheel is not subjected to force. Therefore, the drive wheel touching the ground swings upward, and the suspended drive wheel swings downward, so that the two rear drive wheels 2.3 can touch the ground at the same time, improving the stability of the wheelchair.

[0052] like Figures 3 to 5 As shown, an auxiliary frame 7 is also provided in the middle position of the balancing frame 3. The auxiliary frame 7 is formed by two identical brackets arranged in parallel. A horizontal groove is provided at the bottom of the auxiliary frame 7 to be able to be snap-fitted with the surface of the balancing frame 3, and fixing holes are provided at the connecting positions of the balancing frame 3 and the auxiliary frame 7. The auxiliary frame 7 and the balancing frame 3 can be completely fixed together by fasteners such as screws.

[0053] One side of the auxiliary frame 7 is fixedly connected to the balance frame 3, and the other side is arranged in an inclined manner. The two inclined sections of the auxiliary frame 7 are connected together by a fixed shaft 12, and an auxiliary wheel 9 is rotatably connected to each end of the fixed shaft 12. When the wheelchair scooter is in a horizontal state or a normal practical state, the auxiliary wheel 9 is suspended. The auxiliary wheel 9 is arranged on the rear side of the driving assembly 2 to prevent the wheelchair scooter from falling backward. When the wheelchair scooter has a tendency to fall backward, the auxiliary wheel 9 can further support and slide backward to prevent the wheelchair scooter from falling.

[0054] A V-shaped corner groove 7.1 structure is provided on the upper side of the two parallel brackets of the auxiliary frame 7 for placing the power supply device 8 of the wheelchair scooter. The corner groove 7.1 can play a good role in fixing and limiting the power supply device 8, and the auxiliary frame 7 and the power supply device 8 also need to be fixedly connected with fasteners such as screws.

[0055] A shell 10 is arranged on the upper side of the auxiliary frame 7 and the power supply device 8, and two arc-shaped covers 10.1 are arranged on both sides of the shell 10. The two arc-shaped covers 10.1 can shield and protect the two driving wheels 2.3 of the wheelchair-assisted vehicle, and a through hole 10.2 is arranged in the middle position of the shell 10. The through hole 10.2 can expose part of the structure of the power supply device 8, such as: the power supply device shell, the hand-held handle and other structures; at the same time, the through hole 10.2 structure on the shell 10 can also fix and limit the power supply device 8 to a certain extent.

[0056] Two notches 10.3 are arranged on the two arc-shaped covers 10.1 and on a side away from the rear side of the wheelchair, and the positions of the notches 10.3 correspond to the positions of the elastic components 4. The two supporting points of the frame body 11 are fixedly connected to the elastic components 4 through the notches 10.3, and as shown in FIG. Figure 3As shown, a housing fixing hole 10.3.1 is also provided on the notch 10.3, and a connecting member 4.3 is provided on the base 4.1 of the elastic component 4. The connecting member 4.3 is a bent concave member, the concave portion of the connecting member 4.3 is fixedly connected to the base 4.1 by screws, and both sides of the connecting member 4.3 are fixedly connected to the housing fixing hole 10.3.1 by screws, so that the housing 10 can be fixed on the rear axle component 1.

Claims

1. A motor support buffer structure for a wheelchair scooter, comprising a rear axle assembly, characterized in that: Driving assemblies are arranged on both sides of the rear axle assembly, and a balancing frame is fixedly connected between the two driving assemblies; an elastic assembly is also arranged on the driving assembly, and the elastic assembly is also connected to the frame body.

2. The wheelchair-mobile vehicle motor support buffer structure according to claim 1, characterized in that: The driving assembly includes a housing, the housing includes a first mounting surface and a second mounting surface, and the first mounting surface and the second mounting surface are arranged at an angle.

3. The wheelchair-mobile vehicle motor support buffer structure according to claim 2, characterized in that: The first mounting surface is arranged horizontally, and the balancing frame is fixedly connected to the first mounting surface.

4. The wheelchair-mobile vehicle motor support buffer structure according to claim 3, characterized in that: The second mounting surface is fixedly connected to the elastic component.

5. A wheelchair-mobile vehicle motor support buffer structure according to any one of claims 1 to 4, characterized in that: The driving assembly is connected with a driving wheel.

6. A wheelchair-mobile vehicle motor support buffer structure according to any one of claims 1 to 4, characterized in that: An auxiliary frame is arranged on the balancing frame, and a power supply device is arranged on the auxiliary frame.

7. The wheelchair-mobile vehicle motor support buffer structure according to claim 6, characterized in that: Auxiliary wheels are arranged at the bottom of the auxiliary frame and close to the rear side of the driving assembly.

8. The wheelchair-mobile vehicle motor support buffer structure according to claim 6, characterized in that: It also includes a shell, which is arranged on the upper side of the auxiliary frame and the power supply device.

9. A wheelchair-mobile vehicle motor support buffer structure according to any one of claims 1 to 4, characterized in that: The elastic component comprises a base and an elastic member, and the elastic member is fixed on the base.

10. The wheelchair-mobile vehicle motor support buffer structure according to claim 9, characterized in that: The surface of the elastic member is also fixedly connected to the frame body.

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