A chassis mechanism of an electric wheelchair with a quick release system

Abstract

The utility model discloses a bottom chassis mechanism of electric wheelchair with quick detach system belongs to electric wheelchair field, including seat, leg support subassembly, support beam, rear wheel subassembly and front wheel subassembly, be provided with first hook and first elastic piece below seat, first hook articulates on seat, first elastic piece connects first hook and seat, leg support subassembly includes first connecting rod, and first connecting rod is detachably connected with first hook, and first elastic piece is used for driving first hook and hooks first connecting rod, and support beam is detachably connected below seat, and rear wheel subassembly includes the rear beam and rear wheel that are connected, and rear beam is connected in the rear of support beam, and front wheel subassembly includes the front beam and front wheel that are connected, and front beam is detachably connected in the front of support beam. The embodiment of the application, simple operation, can reduce the space occupation of electric wheelchair after dismounting, and the convenient carrying can improve the travel convenience.

Description

Technical Field

[0001] This utility model relates to the field of electric wheelchair technology, and in particular to a chassis mechanism for an electric wheelchair with a quick-release system. Background Technology

[0002] With the continuous advancement of technology and the arrival of an aging society, electric wheelchairs, as a primary tool for assisting people with mobility impairments, are receiving increasing attention for their design and functionality. Especially in multi-scenario applications, such as indoors, outdoors, on flat surfaces, and on ramps, users are placing higher demands on the flexibility and adaptability of electric wheelchairs. Currently, most electric wheelchairs on the market use a one-piece design, which has problems such as large space occupation, storage difficulties, and limited mobility. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a chassis mechanism for an electric wheelchair with a quick-release system, featuring multiple detachable chassis components, enabling rapid assembly and disassembly for easy transport and improving mobility.

[0004] A chassis mechanism for an electric wheelchair with a quick-release system according to an embodiment of the present invention includes:

[0005] A seat, wherein a first hook and a first elastic element are provided below the seat, the first hook is hinged to the seat, and the first elastic element connects the first hook and the seat;

[0006] The leg support assembly includes a first connecting rod, which is detachably connected to a first hook, and a first elastic element is used to drive the first hook to hook the first connecting rod.

[0007] A support beam is detachably connected to the underside of the seat;

[0008] The rear wheel assembly includes a connected rear beam and a rear wheel, the rear beam being connected behind the support beam;

[0009] The front wheel assembly includes a front beam and a front wheel connected together, the front beam being detachably connected to the front of the support beam.

[0010] The chassis mechanism of an electric wheelchair with a quick-release system according to an embodiment of the present invention has at least the following beneficial effects:

[0011] The first connecting rod in the leg rest assembly engages with the first hook, and the first elastic element drives the first hook to hook the first connecting rod, completing the connection between the leg rest assembly and the seat. When it is necessary to remove the leg rest assembly from the seat, pull the leg rest assembly away from the seat. The first hook overcomes the elastic force of the first elastic element, and the first hook releases the first connecting rod. The leg rest assembly is detachably connected to the seat, the support beam is detachably connected to the seat, and the front wheel assembly is detachably connected to the support beam. When it is necessary to disassemble the electric wheelchair, it can be quickly disassembled into the seat, leg rest assembly, support beam, and front wheel assembly. The rear wheel assembly is connected to the support beam. This mechanism has a quick assembly and disassembly function, is simple to operate, and reduces the space occupied by the electric wheelchair after disassembly, making it easier to transport and improving travel convenience.

[0012] According to some embodiments of the present invention, a first connector and a second connector are provided under the seat. The first connector is provided with a first slot for the first connecting rod to extend into. The leg support assembly includes a leg support bracket. The first connecting rod is disposed on the leg support bracket. The leg support bracket is provided with a connecting groove for the second connector to extend into.

[0013] According to some embodiments of the present invention, a second connecting rod is provided in the connecting groove, and a second slot is provided on the second connecting member for the second connecting rod to extend into.

[0014] According to some embodiments of the present invention, the leg support assembly further includes a pedal, which is installed below the leg support bracket. A support wheel is rotatably connected to the pedal. The leg support bracket includes a first telescopic tube and a second telescopic tube, with the first telescopic tube slidably passing through the second telescopic tube.

[0015] According to some embodiments of the present invention, a plug-in block is provided under the seat, and plug-in protrusions are provided on opposite sides of the plug-in block. A connecting seat is provided above the support beam, and a first slot with the open end facing forward for the plug-in block to extend into is provided on the connecting seat. A second slot for the plug-in protrusion to extend into is provided on the side wall of the first slot. A locking member is provided on the connecting seat to restrict the plug-in block within the first slot.

[0016] According to some embodiments of the present utility model, the plug block is provided with a baffle protruding downwards, the locking member includes a connecting part, a toggle part and a locking part, the connecting part is rotatably connected to the connecting seat, the locking part protrudes from an eccentric position at the rotation center of the connecting part, one end of the toggle part is connected to the connecting part, and the toggle part is used to drive the connecting part to rotate when it is toggleed.

[0017] The locking member has a locked position and an unfolded position. When the locking member is in the locked position, the end of the actuating part away from the connecting part is close to the seat, and the locking part abuts against the side of the baffle away from the first slot. When the locking member is in the unfolded position, the end of the actuating part away from the connecting part is away from the seat, the locking part is offset from the baffle, and both the actuating part and the locking part are located below the baffle.

[0018] According to some embodiments of the present invention, the chassis mechanism of the electric wheelchair with a quick-release system further includes an angle adjustment assembly, which includes a first electric push rod and a second electric push rod. The two ends of the first electric push rod are respectively hinged to the rear beam and the support beam, and the two ends of the second electric push rod are respectively hinged to the support beam and the connecting seat.

[0019] The connecting seat is hinged to the upper end of the support beam, and the rear beam is hinged to the lower end of the support beam. The connecting seat, the support beam, and the rear beam are arranged in a Z-shape.

[0020] According to some embodiments of the present invention, a third connecting rod and a third connecting member are provided on the front beam, a third slot is provided on the third connecting member, a fourth connecting rod, a second hook and a second elastic member are provided on the support beam, the second hook is hinged to the support beam, the second elastic member connects the second hook and the support beam, the second elastic member is used to drive the second hook to hook the third connecting rod, and the third slot is used for the fourth connecting rod to extend into.

[0021] According to some embodiments of the present invention, the front beam includes a front frame, a front swing arm, and a shock absorber. The front frame is detachably connected to the support beam. The front swing arm is hinged to the front frame. The two ends of the shock absorber are respectively hinged to the front frame and the front swing arm. The front wheel is an omnidirectional wheel and is rotatably connected to the front swing arm.

[0022] According to some embodiments of this utility model, the rear wheel is a drive rear wheel, a battery is detachably mounted on the rear beam, the battery is electrically connected to the drive rear wheel, a rear swing arm is provided protruding rearward from the rear beam, and an anti-roll wheel is rotatably connected to the rear swing arm.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0025] Figure 1This is a schematic diagram of the chassis mechanism of an electric wheelchair with a quick-release system according to an embodiment of the present invention.

[0026] Figure 2 This is a schematic diagram of the connection between the seat and leg support assembly of the chassis mechanism of an electric wheelchair with a quick-release system according to an embodiment of the present invention. Figure 1 ;

[0027] Figure 3 This is a schematic diagram of the connection between the seat and leg support assembly of the chassis mechanism of an electric wheelchair with a quick-release system according to an embodiment of the present invention. Figure 2 ;

[0028] Figure 4 This is a schematic diagram of the leg support assembly of the chassis mechanism of an electric wheelchair with a quick-release system according to an embodiment of the present invention.

[0029] Figure 5 This is a schematic diagram of the connecting seat of the chassis mechanism of an electric wheelchair with a quick-release system according to an embodiment of the present invention.

[0030] Figure 6 This is a schematic diagram of the connector block of the chassis mechanism of an electric wheelchair with a quick-release system according to an embodiment of the present invention.

[0031] Figure 7 This is a schematic diagram of the connection between the seat and the support beam of the chassis mechanism of an electric wheelchair with a quick-release system according to an embodiment of the present invention. Figure 1 ;

[0032] Figure 8 This is a schematic diagram of the connection between the seat and the support beam of the chassis mechanism of an electric wheelchair with a quick-release system according to an embodiment of the present invention. Figure 2 ;

[0033] Figure 9 This is a side view of the chassis mechanism of an electric wheelchair with a quick-release system according to an embodiment of the present invention.

[0034] Figure 10 This is a schematic diagram of the connection between the support beam and the front wheel assembly of the chassis mechanism of an electric wheelchair with a quick-release system according to an embodiment of the present invention.

[0035] Figure 11 This is a schematic diagram of the front wheel assembly of the chassis mechanism of an electric wheelchair with a quick-release system according to an embodiment of the present invention.

[0036] Figure 12 This is a schematic diagram of the rear wheel assembly of the chassis mechanism of an electric wheelchair with a quick-release system according to an embodiment of the present invention.

[0037] Icon labels:

[0038] 100. Seat; 110. First connector; 111. First slot; 120. First hook; 121. First elastic element; 130. Second connector; 131. Second slot; 140. Insertion block; 141. Insertion protrusion; 142. Baffle;

[0039] 200. Leg support assembly; 210. Leg support bracket; 211. First connecting rod; 212. Connecting groove; 2121. Second connecting rod; 213. First telescopic tube; 214. Second telescopic tube; 215. Adjustment button; 220. Pedal; 221. Support wheel;

[0040] 300, Support beam; 310, Connecting seat; 311, First slot; 3111, Second slot; 312, Locking element; 3121, Connecting part; 3122, Actuating part; 3123, Locking part; 320, Fourth connecting rod; 330, Second hook; 331, Second elastic element;

[0041] 400. Rear wheel assembly; 410. Rear beam; 411. Battery; 412. Rear control arm; 4121. Anti-roll wheel; 420. Rear wheel; 421. Rear fender;

[0042] 500. Front wheel assembly; 510. Front beam; 511. Third connecting rod; 512. Third connecting piece; 5121. Third slot; 513. Front frame; 514. Front control arm; 515. Shock absorber; 516. Front fender; 520. Front wheel;

[0043] 600, Angle adjustment assembly; 610, First electric actuator; 620, Second electric actuator. Detailed Implementation

[0044] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0045] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0046] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0047] Please see Figure 1 , Figure 2 and Figure 3 This utility model discloses a chassis mechanism for an electric wheelchair with a quick-release system, comprising a seat 100, a leg support assembly 200, a support beam 300, a rear wheel assembly 400, and a front wheel assembly 500. A first hook 120 and a first elastic element 121 are provided below the seat 100. The first hook 120 is hinged to the seat 100, and the first elastic element 121 connects the first hook 120 and the seat 100. The leg support assembly 200 includes a first connecting rod 211, which is detachably connected to the first hook 120. The first elastic element 121 is used to drive the first hook 120 to hook onto the first connecting rod 211. The support beam 300 is detachably connected below the seat 100. The rear wheel assembly 400 includes a connected rear beam 410 and a rear wheel 420, with the rear beam 410 connected to the rear of the support beam 300. The front wheel assembly 500 includes a front beam 510 and a front wheel 520 connected together, with the front beam 510 detachably connected to the front of the support beam 300.

[0048] In the leg support assembly 200, the first connecting rod 211 engages with the first hook 120. The first elastic element 121 drives the first hook 120 to hook the first connecting rod 211, thus completing the connection between the leg support assembly 200 and the seat 100. When it is necessary to remove the leg support assembly 200 from the seat 100, the leg support assembly 200 is pulled away from the seat 100. The first hook 120 overcomes the elastic force of the first elastic element 121, and the first hook 120 releases the first connecting rod 211. The leg support assembly 200 is detachably connected to the seat 100, the support beam 300 is detachably connected to the seat 100, and the front wheel assembly 500 is detachably connected to the support beam 300. When the electric wheelchair needs to be disassembled, it can be quickly disassembled into a seat 100, leg support assembly 200, support beam 300, and front wheel assembly 500. The rear wheel assembly 400 is connected to the support beam 300. This mechanism has a quick assembly and disassembly function, is easy to operate, and can reduce the space occupied by the electric wheelchair after disassembly, making it convenient to transport and improving travel convenience.

[0049] In some embodiments, see Figure 1 , Figure 2 and Figure 3 The seat 100 has a first connector 110 and a second connector 130 located below it. The first connector 110 has a first slot 111 into which a first connecting rod 211 extends. The first slot 111 limits the first connecting rod 211, preventing it from slipping off after being hooked by the first hook 120. The leg support assembly 200 includes a leg support bracket 210, with the first connecting rod 211 mounted on it. The leg support bracket 210 has a connecting groove 212 into which the second connector 130 extends. The two inner walls of the connecting groove 212 abut against the second connector 130, limiting its lateral movement and ensuring the stability of the connection between the leg support bracket 210 and the seat 100.

[0050] In some embodiments, see Figure 1 , Figure 2 and Figure 3 A second connecting rod 2121 is provided in the connecting groove 212, and a second slot 131 is provided on the second connecting member 130. The second connecting rod 2121 extends into the second slot 131, and the second slot 131 limits the second connecting rod 2121, so that the connection between the second connecting member 130 and the leg support bracket 210 is more stable.

[0051] The openings of the first slot 111 and the second slot 131 both face downwards at an angle. During installation, the leg support bracket 210 aligns with the seat 100 upwards and backwards. The first connecting rod 211 is inserted into the first slot 111, the second connecting piece 130 extends into the connecting groove 212, and the second connecting rod 2121 is inserted into the second slot 131. The first elastic member 121 drives the first hook 120 to hook the first connecting rod 211.

[0052] In some embodiments, see Figure 1 , Figure 2 and Figure 4 The leg support assembly 200 also includes a pedal 220, which is installed below the leg support bracket 210. A support wheel 221 is rotatably connected to the pedal 220. The leg support bracket 210 includes a first telescopic tube 213 and a second telescopic tube 214, with the first telescopic tube 213 slidably passing through the second telescopic tube 214. There are two of each of the first telescopic tube 213 and the second telescopic tube 214. The two ends of the first connecting rod 211 are respectively connected to the two second telescopic tubes 214. A crossbeam is connected between the two second telescopic tubes 214, and an adjustment button 215 is provided on the crossbeam to control the extension and retraction of the first telescopic tube 213.

[0053] The leg support bracket 210 is telescopic. When the leg support bracket 210 is extended, the support wheel 221 contacts the ground and supports the pedal 220. When the leg support bracket 210 is shortened, the pedal 220 is suspended from the ground. Users can adjust the length of the leg support bracket 210 according to their needs, making it highly adaptable.

[0054] In some embodiments, see Figure 5 , Figure 6 and Figure 7 A plug-in block 140 is provided below the seat 100, and plug-in protrusions 141 are provided on opposite sides of the plug-in block 140. A connecting seat 310 is provided above the support beam 300, and a first slot 311 is provided on the connecting seat 310. The open end of the first slot 311 faces forward and is used for the plug-in block 140 to extend into. A second slot 3111 is provided on the side wall of the first slot 311 and is used for the plug-in protrusions 141 to extend into. A locking member 312 is provided on the connecting seat 310 to restrict the plug-in block 140 within the first slot 311.

[0055] When the support beam 300 is installed with the seat 100, the plug block 140 is inserted into the first slot 311 backwards, and the plug protrusions 141 on both sides of the plug block 140 are inserted into the second slot 3111; when disassembling, the plug block 140 can be pulled forward, which is convenient for disassembly and assembly.

[0056] In some embodiments, see Figure 5 , Figure 6 and Figure 8The plug block 140 has a downwardly protruding baffle 142. The locking member 312 includes a connecting part 3121, a toggle part 3122, and a locking part 3123. The connecting part 3121 is rotatably connected to the connecting seat 310. The locking part 3123 protrudes from the center of rotation of the connecting part 3121 at an eccentric position. One end of the toggle part 3122 is connected to the connecting part 3121 and is used to drive the connecting part 3121 to rotate when it is toggleed. The locking member 312 has a locked position and an unfolded position. When the locking member 312 is in the locked position, the end of the toggle part 3122 away from the connecting part 3121 is close to the seat 100, and the locking part 3123 abuts against the side of the baffle 142 away from the first slot 311. When the locking member 312 is in the unfolded position, the end of the actuating part 3122 away from the connecting part 3121 is away from the seat 100, the locking part 3123 is offset from the baffle 142, and the actuating part 3122 and the locking part 3123 are located below the baffle 142.

[0057] When the locking member 312 is in the unfolded state, both the toggle part 3122 and the locking part 3123 are located below the baffle 142, allowing the baffle 142 to smoothly move backward with the plug-in block 140. After the plug-in block 140 extends into the first slot 311, the toggle part 3122 is toggled, causing the locking part 3123 to rotate. The locking part 3123 rotates to abut against the baffle 142 on the side away from the first slot 311, preventing the locking part 3123 from moving forward. Consequently, the plug-in block 140 cannot be dislodged from the first slot 311, and the locking member 312 is in the locked position.

[0058] In some embodiments, see Figure 1 and Figure 9 The chassis mechanism of the electric wheelchair with a quick-release system also includes an angle adjustment assembly 600. The angle adjustment assembly 600 includes a first electric push rod 610 and a second electric push rod 620. The two ends of the first electric push rod 610 are hinged to the rear beam 410 and the support beam 300, respectively. The two ends of the second electric push rod 620 are hinged to the support beam 300 and the connecting seat 310, respectively. The connecting seat 310 is hinged to the upper end of the support beam 300, and the rear beam 410 is hinged to the lower end of the support beam 300. The connecting seat 310, the support beam 300, and the rear beam 410 are arranged in a Z-shaped layout.

[0059] The first electric push rod 610 and the second electric push rod 620 can extend and retract, thereby adjusting the angle between the support beam 300 and the rear beam 410, and adjusting the angle between the support beam 300 and the connecting seat 310 (the connecting seat 310 is connected to the seat 100, indirectly adjusting the angle between the support beam 300 and the seat 100), so as to achieve the purpose of adjusting the angle of the seat 100.

[0060] In some embodiments, see Figure 1 and Figure 10The front beam 510 is provided with a third connecting rod 511 and a third connecting member 512, and the third connecting member 512 is provided with a third slot 5121. The support beam 300 is provided with a fourth connecting rod 320, a second hook 330 and a second elastic member 331. The second hook 330 is hinged to the support beam 300, and the second elastic member 331 connects the second hook 330 and the support beam 300. The second elastic member 331 is used to drive the second hook 330 to hook the third connecting rod 511, and the third slot 5121 is used for the fourth connecting rod 320 to extend into.

[0061] When the front beam 510 is installed with the support beam 300, the front beam 510 moves backward to mate with the support beam 300, the fourth connecting rod 320 extends into the third slot 5121, and the second elastic element 331 drives the second hook 330 to hook the third connecting rod 511; when disassembly is required, press the second hook 330, the second hook 330 overcomes the elastic force of the second elastic element 331, the second hook 330 releases the third connecting rod 511, and then the front beam 510 is pulled forward from the support beam 300.

[0062] In some embodiments, see Figure 1 , Figure 10 and Figure 11 The front beam 510 includes a front frame 513, a front control arm 514, and a shock absorber 515. The front frame 513 is detachably connected to the support beam 300, the front control arm 514 is hinged to the front frame 513, and the two ends of the shock absorber 515 are hinged to the front frame 513 and the front control arm 514, respectively. The front wheel 520 is an omnidirectional wheel, rotatably connected to the front control arm 514, and a front fender 516 is provided on the front control arm 514. The shock absorber 515 enables the front wheel assembly 500 to have a shock absorption function. The front wheel 520 is an omnidirectional wheel, capable of moving in any direction, and has high flexibility and maneuverability.

[0063] In some embodiments, see Figure 1 and Figure 12 The rear wheel 420 is the drive rear wheel, capable of self-driving movement. A rear mudguard 421 is mounted on the rear wheel 420. A battery 411, a removable lithium battery, is detachably mounted on the rear beam 410 and electrically connected to the drive rear wheel 420. A rear swing arm 412 protrudes rearward from the rear beam 410, and an anti-roll wheel 4121 is rotatably connected to the rear swing arm 412. The anti-roll wheel 4121 prevents the electric wheelchair from tipping backward, increasing its safety.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0065] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A chassis mechanism for an electric wheelchair with a quick-release system, characterized in that, include: A seat, wherein a first hook and a first elastic element are provided below the seat, the first hook is hinged to the seat, and the first elastic element connects the first hook and the seat; The leg support assembly includes a first connecting rod, which is detachably connected to a first hook, and a first elastic element is used to drive the first hook to hook the first connecting rod. A support beam is detachably connected to the underside of the seat; The rear wheel assembly includes a connected rear beam and a rear wheel, the rear beam being connected behind the support beam; The front wheel assembly includes a front beam and a front wheel connected together, the front beam being detachably connected to the front of the support beam.

2. The chassis mechanism of an electric wheelchair with a quick-release system according to claim 1, characterized in that, The seat is provided with a first connector and a second connector. The first connector is provided with a first slot for the first connecting rod to extend into. The leg support assembly includes a leg support bracket. The first connecting rod is provided on the leg support bracket. The leg support bracket is provided with a connecting slot for the second connector to extend into.

3. The chassis mechanism of an electric wheelchair with a quick-release system according to claim 2, characterized in that, A second connecting rod is provided in the connecting groove, and a second slot is provided on the second connector for the second connecting rod to extend into.

4. The chassis mechanism of an electric wheelchair with a quick-release system according to claim 2, characterized in that, The leg support assembly also includes a pedal, which is installed below the leg support bracket. A support wheel is rotatably connected to the pedal. The leg support bracket includes a first telescopic tube and a second telescopic tube, with the first telescopic tube slidably passing through the second telescopic tube.

5. The chassis mechanism of an electric wheelchair with a quick-release system according to claim 1, characterized in that, A plug-in block is provided under the seat, and plug-in protrusions are provided on opposite sides of the plug-in block. A connecting seat is provided above the support beam. The connecting seat is provided with a first slot with the open end facing forward for the plug-in block to extend into. A second slot is provided on the side wall of the first slot for the plug-in protrusions to extend into. A locking member is provided on the connecting seat to restrict the plug-in block within the first slot.

6. The chassis mechanism of an electric wheelchair with a quick-release system according to claim 5, characterized in that, The plug block has a baffle protruding downwards. The locking component includes a connecting part, a toggle part, and a locking part. The connecting part is rotatably connected to the connecting seat. The locking part protrudes from an eccentric position at the rotation center of the connecting part. One end of the toggle part is connected to the connecting part. The toggle part is used to drive the connecting part to rotate when it is toggleed. The locking member has a locked position and an unfolded position. When the locking member is in the locked position, the end of the actuating part away from the connecting part is close to the seat, and the locking part abuts against the side of the baffle away from the first slot. When the locking member is in the unfolded position, the end of the actuating part away from the connecting part is away from the seat, the locking part is offset from the baffle, and both the actuating part and the locking part are located below the baffle.

7. The chassis mechanism of an electric wheelchair with a quick-release system according to claim 5, characterized in that, It also includes an angle adjustment assembly, which includes a first electric push rod and a second electric push rod. The two ends of the first electric push rod are respectively hinged to the rear beam and the support beam, and the two ends of the second electric push rod are respectively hinged to the support beam and the connecting seat. The connecting seat is hinged to the upper end of the support beam, and the rear beam is hinged to the lower end of the support beam. The connecting seat, the support beam, and the rear beam are arranged in a Z-shape.

8. The chassis mechanism of an electric wheelchair with a quick-release system according to claim 1, characterized in that, The front beam is provided with a third connecting rod and a third connecting member. The third connecting member is provided with a third slot. The support beam is provided with a fourth connecting rod, a second hook and a second elastic member. The second hook is hinged to the support beam. The second elastic member connects the second hook and the support beam. The second elastic member is used to drive the second hook to hook the third connecting rod. The third slot is used for the fourth connecting rod to extend into.

9. The chassis mechanism of an electric wheelchair with a quick-release system according to claim 1, characterized in that, The front beam includes a front frame, a front control arm, and a shock absorber. The front frame is detachably connected to the support beam. The front control arm is hinged to the front frame. The two ends of the shock absorber are respectively hinged to the front frame and the front control arm. The front wheel is an omnidirectional wheel and is rotatably connected to the front control arm.

10. The chassis mechanism of an electric wheelchair with a quick-release system according to claim 1, characterized in that, The rear wheel is a drive rear wheel. A battery is detachably mounted on the rear beam and electrically connected to the drive rear wheel. A rear swing arm protrudes from the rear beam and is rotatably connected to the rear swing arm.

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