Two-channel folding electric wheelchair

Abstract

The utility model provides a two-way folding electric wheelchair which comprises a seat part and a backrest part, the outer side wall of the backrest part is rotationally connected with the seat part, and the left side and the right side of the bottom of the backrest part are fixedly connected with a main frame body through bolts respectively; a supporting rod is welded between the two main frame bodies; a first supporting rod is rotationally connected to the outer side wall of the seat part, and a supporting rod is also welded to the inner side wall of the first supporting rod; a second supporting rod is rotationally connected between the supporting rod in the main frame body and the supporting rod in the first supporting rod; the bottom of the seat part is movably connected with front wheels; the left side and the right side of the main frame body are rotationally connected with rear wheels correspondingly. A locking mechanism is arranged between the seat part and the first supporting rod; armrests are rotationally connected to the left side and the right side of the backrest part respectively; a control assembly with a two-way circuit is arranged between the handrail and the two rear wheels.

Description

Technical Field

[0001] The utility model relates to the field of electric wheelchairs, in particular to a double-channel folding electric wheelchair. Background Art

[0002] As a mobility aid, electric wheelchairs are playing an increasingly important role in medical rehabilitation, daily life, and barrier-free travel. Powered by electricity, electric wheelchairs not only reduce the user's physical burden but also greatly increase freedom of movement and convenience. Their design incorporates advanced technologies from multiple fields, including mechanical engineering, electronic control, and battery technology, aiming to provide users with a safe, comfortable, and efficient travel experience.

[0003] Although the functions of electric wheelchairs in the existing technology are quite complete, there are still some limitations that cannot be ignored. Among them, one of the most significant problems is that most electric wheelchairs only use a single control circuit to manage the operation of the entire system. This design has certain advantages in simplifying the system structure and reducing costs, but it also brings potential risks. When this single control circuit fails, the entire electric wheelchair system will not work properly, causing the wheelchair to be unable to continue moving. For users who rely on electric wheelchairs for travel, this is undoubtedly a huge problem and may even endanger their safety. In addition, because the control circuit is closely connected to the battery management system, once the control circuit fails, it may also affect the normal charging and discharging of the battery, further exacerbating the severity of the problem.

[0004] On the other hand, when an electric wheelchair runs out of power, it also faces the problem of being unable to move. Although this seems to be a relatively intuitive and easy-to-understand problem, it is often overlooked in real applications. Especially when it is used for a long time or forgotten to charge, the power will run out frequently. In this case, the user can only rely on other means to move the wheelchair or seek help, which undoubtedly reduces the practicality and convenience of the electric wheelchair. Utility Model Content

[0005] In order to solve the problem that the electric wheelchair in the prior art has only a single control circuit, the utility model provides a dual-channel folding electric wheelchair;

[0006] The utility model provides a dual-channel folding electric wheelchair adopts the following technical solutions:

[0007] A dual-channel folding electric wheelchair comprises a seat portion and a backrest, wherein the outer side wall of the backrest is rotatably connected to the seat portion, and the left and right sides of the bottom of the backrest are respectively fixedly connected to the main frame by bolts; and a support rod is welded between the two main frames; the outer side wall of the seat portion is rotatably connected to the first support rod, and the inner side wall of the first support rod is also welded to the support rod; the support rod in the main frame is rotatably connected to the second support rod in the first support rod; the bottom of the seat portion is movably connected to the front wheel; the left and right sides of the main frame are respectively rotatably connected to the rear wheels; a locking mechanism is provided between the seat portion and the first support rod; the left and right sides of the backrest are respectively rotatably connected to the armrests; a control component with a two-way circuit is provided between the armrests and the two rear wheels;

[0008] Furthermore, the front wheels are universal wheels that can rotate 360°, and the rear wheels are rotating wheels that can rotate in a fixed direction;

[0009] Furthermore, the rotational connection between the armrest and the backrest is a damping connection;

[0010] Furthermore, the bottom of the first support rod is rotatably connected to a pedal;

[0011] Furthermore, a ground support wheel is mounted on the bottom of the main frame by bolts; the rotating wheel portion of the ground support wheel is located higher than the contact point of the rear wheel with the ground;

[0012] Furthermore, the control assembly includes a first controller, a second controller, a control center, a first battery pack, a second battery pack, a first motor, and a second motor. The first controller and the second controller are respectively mounted on the front side walls of the two armrests via bolts; the control center is mounted inside the main frame via bolts; the first battery pack and the second battery pack are also respectively connected inside the main frame via bolts; the first motor and the second motor for respectively controlling the two rear wheels are respectively connected inside the main frame via bolts;

[0013] Furthermore, the control center includes two independent control circuits, which are respectively connected to the first controller, the first battery pack, the first motor, the second motor, and the second controller, the second battery pack, the first motor, and the second motor;

[0014] Furthermore, the first controller and the second controller are respectively installed with circuit switches, and the two circuit switches can only be closed individually. When one switch is closed, the other will be actively disconnected.

[0015] In summary, the beneficial effects of the present invention are as follows:

[0016] The utility model adds a dual-channel control component, which improves the reliability and safety of the electric wheelchair. Even if one control circuit fails, the other circuit can still work normally, ensuring the basic driving function of the wheelchair. At the same time, the mutually exclusive closed circuit switch design prevents circuit conflicts caused by misoperation, further improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a bottom view schematic diagram of the overall structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the control circuit of the utility model;

[0020] Figure 4 This is a schematic diagram of the utility model in an expanded state;

[0021] Figure 5 This is a schematic diagram of the utility model in a folded state.

[0022] As shown in the figure: 1-seat part, 11-backrest, 12-main frame, 13-first support rod, 131-second support rod, 14-front wheel, 15-rear wheel, 16-ground wheel, 17-locking mechanism, 2-armrest, 21-first controller, 22-second controller, 23-control center, 24-first battery pack, 25-second battery pack, 26-first motor, 27-second motor, 3-pedal. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-5 The utility model is further described in detail:

[0024] The present invention discloses a dual-channel folding electric wheelchair. Figure 1As shown, it includes a seat portion 1 and a backrest 11. The outer side wall of the backrest 11 is rotatably connected to the seat portion 1, and the left and right sides of the bottom of the backrest 11 are respectively fixedly connected to the main frame 12 by bolts; and a support rod is welded between the two main frames 12; the outer side wall of the seat portion 1 is rotatably connected to the first support rod 13, and the inner side wall of the first support rod 13 is also welded to a support rod; the second support rod 131 is rotatably connected between the support rod in the main frame 12 and the support rod in the first support rod 13; the bottom of the seat portion 1 is movably connected to the front wheel 14; the left and right sides of the main frame 12 are respectively rotatably connected to the rear wheels 15; a locking mechanism 17 is provided between the seat portion 1 and the first support rod 13; the left and right sides of the backrest 11 are respectively rotatably connected to the armrests 2; a control component with a two-way circuit is provided between the armrests 2 and the two rear wheels 15; in this embodiment In the embodiment, the main frame 12 and the support rod: the two main frames 12 are fixed to the bottom of the backrest 11 by bolts, and support rods are welded to enhance the stability of the overall structure; this design ensures the stability of the wheelchair when carrying weight; the first support rod 13 is rotatably connected to the second support rod 131: the first support rod 13 is rotatably connected to the seat part 1, and is connected to the support rod in the main frame 12 through the second support rod 131 to form a folding mechanism; this design allows the wheelchair to be easily folded up when not in use, saving space; the overall structural design of the utility model is reasonable, which not only ensures the stability and load-bearing capacity of the wheelchair, but also is easy to fold and carry, thereby improving the convenience of use. The use of a control component with a dual-channel circuit can enable the utility model to switch to another circuit in time when a single circuit fails, and move to a safe position in time;

[0025] like Figure 1 、 2 As shown, the front wheels 14 are universal wheels that can rotate 360 ​​degrees, and the rear wheels 15 are swivel wheels that can rotate in a fixed direction. In this embodiment, the front wheels 14 are universal wheels that can rotate 360 ​​degrees, and the rear wheels 15 are swivel wheels that can rotate in a fixed direction. This configuration makes the wheelchair more flexible when turning, while the stable rotation of the rear wheels 15 ensures the stability of straight-line driving. This improves the controllability and driving stability of the wheelchair and enhances the user experience.

[0026] like Figure 1 、 2 As shown, the rotational connection between the armrest 2 and the backrest 11 is a damping connection; in this embodiment, the armrest 2 can be easily adjusted in angle through the damping connection, and the position of the secondary shaft can be fixed;

[0027] like Figure 1 、 2 As shown, the bottom of the first support rod 13 is rotatably connected to the pedal 3; In this embodiment, the bottom of the first support rod 13 is rotatably connected to the pedal 3, which is convenient for the user to place his feet and increases the riding comfort;

[0028] like Figure 1 、 2 As shown, a supporting wheel 16 is installed at the bottom of the main frame 12 by bolts; the rotating wheel portion of the supporting wheel 16 is located higher than the contact point of the rear wheel 15 with the ground; in this embodiment, the supporting wheel 16 installed at the bottom of the main frame 12 has a rotating wheel portion located higher than the contact point of the rear wheel 15 with the ground; this design plays a supporting role when the wheelchair is folded or tilted, preventing the wheelchair from accidentally tipping over; it increases the stability of the wheelchair, prevents accidental tipping over due to folding or tilting, and improves the safety of use.

[0029] like Figure 1 、 2 3, the control assembly includes a first controller 21, a second controller 22, a control center 23, a first battery pack 24, a second battery pack 25, a first motor 26, and a second motor. The front side walls of the two armrests 2 are respectively installed with the first controller 21 and the second controller 22 by bolts; the interior of the main frame 12 is installed with a control center 23 by bolts; the interior of the main frame 12 is also connected to the first battery pack 24 and the second battery pack 25 by bolts; the interior of the main frame 12 is connected to the first motor 26 and the second motor 27 for controlling the two rear wheels 15 respectively by bolts; the control center 23 includes two independent control circuits, which are respectively connected to the first controller 21, the first motor 26 and the second motor 27 of the first battery pack 24, and the second controller 22, the first motor 26 and the second motor 27 of the second battery pack 25; the first controller 21 and the second controller 22 are respectively installed with circuit switches. The two circuit switches can only be closed individually. When one switch is closed, the other will be actively disconnected. In this embodiment, it includes a first controller 21, a second controller 22, a control center 23, a first battery pack 24, a second battery pack 25, a first motor 26 and a second motor 27. The two armrests 2 are respectively installed with controllers, the control center 23 and the battery pack are installed in the main frame 12, and the motor is used to control the rear wheel 15. Two independent control circuits are provided in the control center 23, which respectively control the two controllers and the corresponding battery packs and motors. The circuit switch in the controller is designed to be mutually exclusive and closed to ensure that only one circuit works at the same time. The dual-channel circuit design improves the reliability and safety of the electric wheelchair. Even if one control circuit fails, the other circuit can still work normally, ensuring the basic driving function of the wheelchair. At the same time, the mutually exclusive closed circuit switch design prevents circuit conflicts caused by misoperation, further improving safety.

[0030] The implementation principle of the embodiment of the present utility model is:

[0031] like Figure 4 、 5As shown, the folding process of the utility model is simple. The user only needs to open the locking mechanism 17 to lift the seat portion 1, retract the first support rod 13, and realize folding by rotating the connecting rod mechanism of the second support rod 131. The handle of the backrest portion 11 can be pulled using the support wheels 16 and the rear wheels 15 as fulcrums to carry the chair. The locking mechanism mainly relies on a locking block and a spring. A locking bolt that cooperates with the block is provided inside the first support rod 13. When the utility model is opened, the locking block of the seat portion 1 will automatically lock the locking bolt under the action of the spring. The locking bolt is not shown in the figure and is already a prior art.

[0032] When riding the present invention, the movement can be controlled by using the first controller 21 or the second controller 22. When one of the circuits fails, the other circuit can be switched to continue traveling or escape from danger. Similarly, the second battery pack 25 or the first battery pack 24 can use smaller batteries as a backup power source for the present invention, providing it with a longer battery life.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. The various components mentioned in the present invention are common technologies in the existing field. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in this utility model is defined by the appended claims and their equivalents.

Claims

1. A dual-channel folding electric wheelchair, comprising a seat portion (1) and a backrest portion (11), wherein the outer side wall of the backrest portion (11) is rotatably connected to the seat portion (1), characterized in that: The left and right sides of the bottom of the backrest (11) are respectively fixedly connected to the main frame (12) by bolts; and a support rod is welded between the two main frames (12); the outer wall of the seat portion (1) is rotatably connected to the first support rod (13), and the inner wall of the first support rod (13) is also welded to a support rod; a second support rod (131) is rotatably connected between the support rod in the main frame (12) and the support rod in the first support rod (13); the bottom of the seat portion (1) is movably connected to the front wheel (14); the left and right sides of the main frame (12) are respectively rotatably connected to the rear wheel (15); a locking mechanism (17) is provided between the seat portion (1) and the first support rod (13); the left and right sides of the backrest (11) are respectively rotatably connected to the armrest (2); a control component with a double-pass circuit is provided between the armrest (2) and the two rear wheels (15).

2. A dual-channel folding electric wheelchair according to claim 1, characterized in that The front wheel (14) is a universal wheel that can rotate 360 ​​degrees, and the rear wheel (15) is a rotating wheel that can rotate in a directional manner.

3. A dual-channel folding electric wheelchair according to claim 1, characterized in that The rotational connection between the armrest (2) and the backrest (11) is a damping connection.

4. A dual-channel folding electric wheelchair according to claim 1, characterized in that The bottom of the first support rod (13) is rotatably connected to a pedal (3).

5. The dual-channel folding electric wheelchair according to claim 1, characterized in that A ground support wheel (16) is installed at the bottom of the main frame (12) via bolts; the rotating wheel portion of the ground support wheel (16) is positioned higher than the contact point of the rear wheel (15) from the ground.

6. A dual-channel folding electric wheelchair according to claim 1, characterized in that The control assembly comprises a first controller (21), a second controller (22), a control center (23), a first battery pack (24), a second battery pack (25), a first motor (26), and a second motor; the front side walls of the two armrests (2) are respectively mounted with the first controller (21) and the second controller (22) via bolts; the interior of the main frame (12) is mounted with the control center (23) via bolts; the interior of the main frame (12) is also respectively connected with the first battery pack (24) and the second battery pack (25) via bolts; the interior of the main frame (12) is respectively connected with the first motor (26) and the second motor (27) for respectively controlling the two rear wheels (15) via bolts.

7. A dual-channel folding electric wheelchair according to claim 6, characterized in that The control center (23) includes two independent control circuits, which are respectively connected to the first controller (21), the first battery pack (24), the first motor (26), and the second motor (27); and the second controller (22), the second battery pack (25), the first motor (26), and the second motor (27).

8. The dual-channel folding electric wheelchair according to claim 7, characterized in that The first controller (21) and the second controller (22) are respectively equipped with circuit switches, and the two circuit switches can only be closed individually. When one of the switches is closed, the other will be automatically opened.

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