Double-pedal electric wheelchair

Abstract

The utility model relates to a double-pedal electric wheelchair, which belongs to the technical field of electric wheelchairs and comprises a seat component, a driving component, a front wheel component, a rear wheel component and a quick release fastener. The rear wheel assembly is connected with the driving assembly, the front wheel assembly is detachably connected with the driving assembly, the electric wheelchair is quickly disassembled for the first time, the driving assembly is detachably connected with the seat assembly, and the electric wheelchair is quickly disassembled for the second time; the front wheel assembly comprises a universal wheel set and an omni-directional wheel set, the universal wheel set and the omni-directional wheel set are each provided with a clamping strip, the quick-release buckles are detachably connected with the clamping strips and used for quickly replacing the universal wheel set and the omni-directional wheel set, and the quick-release front wheel assembly can be replaced under different road conditions, so that the electric wheelchair can be used in multiple scenes; according to the wheelchair, the adaptability and convenience are improved, a user can quickly adjust the configuration of the wheelchair according to different requirements and environments, the user can quickly complete replacement work by himself / herself without depending on professionals or special tools, replacement is convenient, and operation is easy.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric wheelchairs, and in particular relates to a double-pedal electric wheelchair. Background Art

[0002] With the continuous advancement of science and technology and the arrival of an aging society, the design and function of electric wheelchairs, as the main tool to assist people with limited mobility, are increasingly attracting attention. Especially in multi-scenario applications, such as indoors, outdoors, on flat roads, ramps, etc., users have higher requirements for the flexibility and adaptability of electric wheelchairs. For this reason, dual-pedal electric wheelchairs with replaceable front wheel assemblies in multiple scenarios have emerged to meet the needs of use in different scenarios.

[0003] The front wheel components of traditional electric wheelchairs are mostly fixed designs and cannot be quickly replaced according to different road conditions. This design limits the application scenarios and flexibility of electric wheelchairs. For example, when driving on flat roads, more flexible front wheels are required to provide better control and comfort; when driving on slopes or uneven roads, more stable and durable front wheels are required to ensure safety.

[0004] Therefore, it is particularly urgent to develop an electric wheelchair that can be used in multiple scenarios. Utility Model Content

[0005] The utility model provides a double-pedal electric wheelchair, which solves the problem that the existing electric wheelchair has low applicability and cannot be switched according to the scene.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A double-pedal electric wheelchair, comprising a seat assembly, a drive assembly, a front wheel assembly, a rear wheel assembly and a quick-release buckle; the quick-release buckle is installed on the drive assembly, the rear wheel assembly is connected to the drive assembly, the front wheel assembly is detachably connected to the drive assembly, and the electric wheelchair is quickly released for the first time, and the drive assembly is detachably connected to the seat assembly, and the electric wheelchair is quickly released for the second time;

[0008] The front wheel assembly comprises a universal wheel set and an omnidirectional wheel set, both of which are provided with a snap-on strip, and the quick-release buckle is detachably connected to the snap-on strip for quickly replacing the universal wheel set and the omnidirectional wheel set.

[0009] Preferably, the universal wheel group includes a foot pedal, a bracket and two universal wheels; the two universal wheels are respectively hinged on both sides of the bracket, the foot pedal is hinged in the middle of the bracket, and the universal wheel is a single-sided support structure; a locking groove is provided on the side of the bracket away from the foot pedal; the locking groove is used for preliminary locking and positioning with the drive assembly.

[0010] Preferably, the omnidirectional wheel set includes an omnidirectional foot pedal, an omnidirectional bracket and two omnidirectional wheels; the two omnidirectional wheels are respectively arranged at two ends of the omnidirectional bracket, the omnidirectional foot pedal is connected to the omnidirectional bracket, and the omnidirectional foot pedal is located between the two omnidirectional wheels.

[0011] Preferably, the front wheel assembly is located at the front end of the driving assembly, the rear wheel assembly is located at the rear end of the driving assembly, and the rear wheel assembly is provided with a driving motor, and the driving motor is used to drive the rear wheel assembly to move.

[0012] Preferably, the seat assembly includes a seat cushion, a seat back and armrests; the seat cushion is connected to the driving assembly, the seat back is rotatably connected to the seat cushion, the seat back and the seat cushion are vertically arranged, and the armrests are arranged on both sides of the seat back.

[0013] Preferably, the drive assembly also includes a support member, a front electric push rod and a rear electric push rod; the support member is used to connect the front wheel assembly and the seat assembly, the front electric push rod is located at the front end of the support member, the fixed end is fixedly connected to the support member, and the telescopic end is connected to the seat cushion; the rear electric push rod is located at the rear end of the support member, the fixed end of the rear electric push rod is fixedly connected to the rear wheel assembly, and the telescopic end of the rear electric push rod is connected to the support member.

[0014] The beneficial effects of the utility model are:

[0015] 1. The quick-release front wheel assembly can be replaced under different road conditions, allowing the electric wheelchair to be used in multiple scenarios, improving adaptability and convenience, and allowing users to quickly adjust the configuration of the wheelchair according to different needs and environments. Users can quickly complete the replacement work by themselves without relying on professionals or special tools. It has a simple structure, easy replacement, and simple operation.

[0016] 2. The electric wheelchair has the function of adjusting the seat height through the drive component. The seat height can be adjusted according to the needs of different users, improving comfort, increasing freedom, promoting communication and interaction, and bringing convenience to the user's life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the structure of an electric wheelchair provided in one embodiment of the utility model;

[0019] Figure 2 It is a schematic cross-sectional structure diagram of an electric wheelchair provided in one embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the quick-release buckle in a snap-on state provided in one embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of a universal wheel set provided in one embodiment of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of an omnidirectional wheel set provided in one embodiment of the utility model;

[0023] Legend: 1. Seat assembly; 11. Cushion; 12. Backrest; 13. Armrest; 2. Drive assembly; 21. Support; 22. Front electric push rod; 23. Rear electric push rod; 3. Quick release buckle; 4. Rear wheel assembly; 5. Front wheel assembly; 51. Foot pedal; 52. Bracket; 521. Positioning slot; 53. Universal wheel; 7. Connecting strip; 8. Drive motor; 91. Omnidirectional foot pedal; 92. Omnidirectional bracket; 93. Two omnidirectional wheels. DETAILED DESCRIPTION

[0024] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0025] like Figure 1-Figure 5 As shown, a double-pedal electric wheelchair comprises a seat assembly 1, a drive assembly 2, a front wheel assembly 5, a rear wheel assembly 4 and a quick-release buckle 3; the front wheel assembly 5 is detachably connected to the drive assembly 2, and the electric wheelchair is quickly released for the first time, the rear wheel assembly 4 is rotatably connected to the drive assembly 2, the drive assembly 2 is detachably connected to the seat assembly 1, and the electric wheelchair is quickly released for the second time, and the electric wheelchair is split into three parts: the front wheel assembly 5, the rear wheel assembly 4, the drive assembly 2 and the seat assembly 1, so that the electric wheelchair can be carried and transported when going out, providing convenience for the user. It is not only convenient and practical at home, but also does not take up too much space when going out, and is easy to carry; at the same time, the seat assembly 1 can achieve height adjustment through the drive assembly 2, so that the user can easily reach items at high places, etc., providing convenience for the user;

[0026] According to different scenarios, such as when the road conditions are sandy, the omnidirectional wheel set is more practical than the universal wheel set. Therefore, when the front wheel assembly 5 needs to be replaced, the quick-release buckle 3 is rotated to release the fast-release buckle 3 from the snap-on strip 7, and then the universal wheel set is pulled out from the drive assembly 2. When installing, the omnidirectional wheel set is pushed inwardly of the wheelchair, and the snap-on groove 521 is snap-on with the drive assembly 2. During the inward pushing process, the quick-release buckle 3 is automatically snap-on with the snap-on strip 7, and the omnidirectional wheel set can be quickly installed and removed from the pedal assembly. If it is used on a flat cement ground, the omnidirectional wheel quick release can be replaced with the universal wheel set in the same way. The quick-replacement structure of the removal buckle 3 can significantly reduce the time for replacing the front wheel assembly 5. The user can quickly complete the replacement work by himself without relying on professionals or special tools. It has a simple structure, is easy to replace, and is easy to operate. The quick-release front wheel assembly 5 can be replaced under different road conditions, so that the electric wheelchair can be used in multiple scenarios, improves adaptability and convenience, and enables users to quickly adjust the configuration of the wheelchair according to different needs and environments. At the same time, the design of the quick-release buckle 3 also takes into account stability and safety to ensure that it will not loosen or fall off during the disassembly and installation process.

[0027] Furthermore, the electric wheelchair can also replace the front wheel assembly 5 to adapt to people with different needs; the quick-release buckle 3 is J-shaped, and the opening of the J-shaped quick-release buckle 3 is located at the top, and the buckle part wraps the clamping strip 7 from the bottom, conforming to the characteristics of the wheelchair when in use. When a person steps on the foot pedal 51, the foot pedal 51 is subjected to a downward force. At this time, the force is shared by the J-shaped quick-release buckle 3, so that during normal use, the foot pedal 51 will not easily separate from the drive assembly 2, thereby ensuring the safety of the electric wheelchair.

[0028] In summary, the wheelchair can be disassembled into three major parts during transportation, namely, the front wheel assembly 5, the rear wheel plus drive assembly 2, and the seat assembly 1, making it easy to carry and transport when going out; the quick replacement structure of the buckle can significantly reduce the time for replacing the front wheel assembly 5, and the user can quickly complete the replacement work by himself without relying on professionals or special tools.

[0029] In one embodiment, the universal wheel set includes a foot pedal 51, a bracket 52 and two universal wheels 53; the two universal wheels 53 are respectively hinged on both sides of the bracket 52, and the universal wheels 53 are connected to the bracket 52 by hinges. The universal wheels 53 can rotate 360° around the hinge. The foot pedal 51 is hinged at the middle of the bracket 52. The foot pedal 51 is horizontally arranged and located between the two universal wheels 53. The foot pedal 51 is rotatably connected to the bracket 52, which increases the range of movement of the wheelchair user's feet and when folded, the foot pedal 51 is retracted to reduce the space occupied by the folded wheelchair. The universal wheel 53 is a single-sided support structure, and the support structure is located on the inner side of the universal wheel 53, that is, the side close to the two universal wheels 53, so that when the wheelchair is moving forward, the side of the universal wheel 53 facing outward has no sharp protrusions, which can well avoid scratching door frames or walls when passing through narrow areas such as room doors, and also reduce the risk of scratching passers-by during driving.

[0030] In one embodiment, the omnidirectional wheel set includes an omnidirectional foot pedal 91, an omnidirectional bracket 92 and two omnidirectional wheels 93; the two omnidirectional wheels 93 are respectively arranged at the two ends of the omnidirectional bracket 92, the omnidirectional foot pedal 91 is connected to the omnidirectional bracket 92, and the omnidirectional foot pedal 91 is located between the two omnidirectional wheels 93. Compared with the universal wheel set, the omnidirectional wheel set is suitable for sandy or uneven terrain, and can run stably on uneven terrain.

[0031] Taking the universal wheel assembly as an example, a locking groove 521 is provided on the side of the bracket 52 away from the foot pedal 51. The locking groove 521 is a semi-open structure, and the opening direction is toward the side away from the foot pedal 51; the locking groove 521 is used to initially lock and position the bracket 52 and the driving assembly 2, and the locking groove 521 is used to realize the positioning and locking of the foot pedal 51, connect the foot pedal 51 to the driving assembly 2, and then lock the locking strip 7 to the quick-release buckle 3, and use the locking groove 521 and the locking strip 7 to realize two simple structures to connect the front wheel assembly 5 and the driving assembly 2, among which the quick release method of the omnidirectional wheel assembly and the quick release method of the universal wheel assembly and the structure involved in the quick release are consistent, and will not be repeated.

[0032] In one embodiment, the front wheel assembly 5 is located at the front end of the drive assembly 2, and the rear wheel assembly 4 is located at the rear end of the drive assembly 2. The rear wheel assembly 4 is provided with a drive motor 8, and the drive motor 8 is used to drive the rear wheel assembly 4 to move. The stability and traction are good, especially on uphill and complex outdoor terrains. The rear-wheel drive electric wheelchair runs more smoothly, is more comfortable, and has more flexible steering.

[0033] In one embodiment, the seat assembly 1 includes a seat cushion 11, a backrest 12 and an armrest 13; the seat cushion 11 is connected to the support 21, the backrest 12 is rotatably connected to the seat cushion 11, the backrest 12 and the seat cushion 11 are vertically arranged, and the armrest 13 is arranged on both sides of the backrest 12; the seat cushion 11 is made of high-density sponge, has a good sitting feeling, and provides users with long-term comfort; the bottom of the seat cushion 11 is slidably engaged with the support 21, so that the seat cushion 11 and the support 21 can be separated. The backrest 12 adopts a curved surface design, which is ergonomic and provides support for the neck and back. The backrest 12 is connected to the seat cushion 11 through a rotating shaft, so that the backrest 12 can rotate relative to the seat cushion 11, so that the seat cushion 11 and the backrest 12 can be folded, reducing the space after folding, facilitating transportation, and facilitating users to adjust the angle of the backrest 12 during normal use. The armrest 13 is arranged on both sides of the backrest 12, and is made of soft material to provide users with comfortable hand support.

[0034] In one embodiment, the drive assembly 2 also includes a support member 21, a front electric push rod 22 and a rear electric push rod 23; the support member 21 is used to connect the front wheel assembly 5 and the seat assembly 1, the front electric push rod 22 is located at the front end of the support member 21, the fixed end is fixedly connected to the support member 21, and the telescopic end is connected to the seat cushion 11; the rear electric push rod 23 is located at the rear end of the support member 21, the fixed end of the rear electric push rod 23 is fixedly connected to the rear wheel assembly 4, and the telescopic end of the rear electric push rod 23 is connected to the support member 21, and the seat height is adjusted by controlling the front and rear electric push rods to retract or extend; in addition, when the electric wheelchair is quickly disassembled, the rear wheel assembly 4 and the support member 21 seat are used as common non-detachable parts, and the front electric push rod 22 and the rear electric push rod 23 are retracted, so that the support member 21 is retracted to the rear wheel assembly 4 to complete the folding.

[0035] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A double-pedal electric wheelchair, characterized in that: It comprises a seat assembly, a drive assembly, a front wheel assembly, a rear wheel assembly and a quick-release buckle; the quick-release buckle is installed on the drive assembly, the rear wheel assembly is connected to the drive assembly, the front wheel assembly is detachably connected to the drive assembly for quick release of the electric wheelchair for the first time, and the drive assembly is detachably connected to the seat assembly for quick release of the electric wheelchair for the second time; The front wheel assembly comprises a universal wheel set and an omnidirectional wheel set, both of which are provided with a snap-on strip, and the quick-release buckle is detachably connected to the snap-on strip for quickly replacing the universal wheel set and the omnidirectional wheel set.

2. A double-pedal electric wheelchair according to claim 1, characterized in that: The universal wheel assembly includes a foot pedal, a bracket and two universal wheels; the two universal wheels are respectively hinged on both sides of the bracket, the foot pedal is hinged in the middle of the bracket, and the universal wheel is a single-sided support structure; a locking groove is provided on the side of the bracket away from the foot pedal; the locking groove is used for preliminary locking and positioning with the drive assembly.

3. A double-pedal electric wheelchair according to claim 1, characterized in that: The omnidirectional wheel set comprises an omnidirectional pedal, an omnidirectional bracket and two omnidirectional wheels; the two omnidirectional wheels are respectively arranged at two ends of the omnidirectional bracket, the omnidirectional pedal is connected to the omnidirectional bracket, and the omnidirectional pedal is located between the two omnidirectional wheels.

4. A double-pedal electric wheelchair according to claim 1, characterized in that: The front wheel assembly is located at the front end of the driving assembly, and the rear wheel assembly is located at the rear end of the driving assembly. The rear wheel assembly is provided with a driving motor, and the driving motor is used to drive the rear wheel assembly to move.

5. The double-pedal electric wheelchair according to claim 1, characterized in that: The seat assembly includes a seat cushion, a seat back and armrests; the seat cushion is connected to the driving assembly, the seat back is rotatably connected to the seat cushion, the seat back and the seat cushion are vertically arranged, and the armrests are arranged on both sides of the seat back.

6. A double-pedal electric wheelchair according to claim 5, characterized in that: The drive assembly also includes a support member, a front electric push rod and a rear electric push rod; the support member is used to connect the front wheel assembly and the seat assembly, the front electric push rod is located at the front end of the support member, the fixed end is fixedly connected to the support member, and the telescopic end is connected to the seat cushion; the rear electric push rod is located at the rear end of the support member, the fixed end of the rear electric push rod is fixedly connected to the rear wheel assembly, and the telescopic end of the rear electric push rod is connected to the support member.

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