A foldable locking motorized walker

Abstract

The application adopts the following technical scheme: a foldable and locked electric walking aid, comprising a built-in special-shaped frame structure, a bidirectional folding locking mechanism, a foldable footrest structure and a full-thread fastening adjustment system; the built-in special-shaped frame structure comprises a left frame and a right frame, a battery cabin is arranged in the lower half of the left frame, a control cabin is arranged in the lower half of the right frame, the battery and the lower controller are arranged in a low position and are built-in, and wiring is arranged inside the frame; the bidirectional folding locking mechanism is arranged on the support frame of the scissors lever, a rigid truss lock is formed in an unfolded state, and the folded state has a reverse hook self-locking function to prevent accidental unfolding; the foldable footrest structure can be stored on the side of the support frame to reduce the folding size; and the full-thread fastening adjustment system is used for gapless fastening adjustment of the handrails and the backrest. The application provides an electric walking aid with portability, high rigidity, high safety and industrial aesthetics.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more particularly to a foldable and lockable electric walking aid. Background Technology

[0002] As the global population ages, the needs of the elderly for assisted mobility have shifted from traditional passive support to "active assistance," leading to the development of hybrid walking aids that integrate electric power assist and mobility functions. To adapt to urban living environments and transportation needs, walking aids must have a folding function. Current folding methods are mainly divided into front-to-back folding and side folding, with side folding being the ideal solution due to its extremely narrow width and high space compression rate after folding.

[0003] Currently available side-folding electric walking aids have the following core defects in terms of structure and integration: First, the lateral folding structure has an inherent mechanical disadvantage, with severely insufficient rigidity. Traditional X-type crossbar systems, after unfolding, typically rely solely on the geometric restraint of the seat plate or simple frictional damping to maintain their shape, which is a form of "soft locking." When the user applies an asymmetrical downward load or the motor outputs instantaneous torque, the frame is highly susceptible to torsional deformation. This elastic deformation causes dynamic changes in wheel alignment parameters, leading to "death sway."

[0004] Secondly, the low level of electromechanical integration poses safety hazards and results in a bulky appearance. Existing products are mostly "added" to the tubing of manual walkers, with the battery pack often suspended under the seat and the controller box mounted externally on the side of the armrest. This design not only leads to an excessively high and uneven center of gravity, increasing the risk of tipping over, but also exposes the connecting wiring harness, making it prone to fatigue breakage or snagging during folding.

[0005] Finally, existing armrest or backrest adjustments generally use a "pin-hole adjustment" structure, relying on the gap (usually 0.5-1mm) between the inner and outer tubes for sliding. This gap remains even after locking, causing noticeable wobbling and abnormal noises during use, failing to provide a solid sense of security for frail elderly people who rely on it for weight support.

[0006] In addition, existing products often lack an effective self-locking mechanism when folded, and are prone to accidentally unfolding due to vibration during handling, posing a risk of pinching fingers. Summary of the Invention

[0007] To address the aforementioned technical problems, this invention discloses a foldable and lockable electric walking aid that combines the advantages of high rigidity, high integration, high safety, ease of operation, and attractive design, perfectly meeting the travel assistance needs of the elderly and solving the technical problems existing in the background art.

[0008] This invention is achieved using the following technical solution: a foldable and lockable electric walking aid, comprising a concealed irregular frame structure, a two-way folding locking mechanism, a foldable foot pedal structure, and a fully threaded fastening and adjustment system; the concealed irregular frame structure includes a left frame and a right frame, with a battery compartment located in the lower half of the left frame and a control compartment located in the lower half of the right frame, the battery and lower controller being concealed in a low position, and wiring running inside the frame; the two-way folding locking mechanism is located on the support frame of the scissor lift, forming a rigid truss lock in the unfolded state, and having a hook self-locking mechanism in the folded state to prevent accidental unfolding; the foldable foot pedal structure can be stored to the side of the support frame to reduce the folded size; the fully threaded fastening and adjustment system is used for gapless fastening and adjustment of the armrests and backrest.

[0009] Preferably, the concealed irregular frame structure also includes a battery box and a battery lock; the battery box is inserted obliquely into the battery compartment, the battery box is provided with a locking slot, the battery lock cooperates with the locking slot to lock, and the key is used to unlock.

[0010] Preferably, the control cabin is provided with a controller fixing plate and a controller fixing seat that are mirror-symmetrical on the left and right sides; the controller fixing plate presses and fixes the bottom sides of the lower controller, and cooperates with the controller fixing seat to lock the lower controller in the control cabin.

[0011] Preferably, the bidirectional folding locking mechanism includes a locking plate, a return torsion spring, a locking column, a locking button, a spring, and an arc hook; the locking column moves through the right support frame, and a locking button is fixedly connected to the outer end of the locking column; the locking button is connected to the right support frame via a spring; and the locking plate is rotatably connected to the right support frame via the return torsion spring.

[0012] Preferably, in the unfolded state, the locking plate slides into the arc hook, and the reset torsion spring drives the locking plate to lock the locking pin, forming a rigid truss with the scissor bar; in the folded state, pressing the lock button pushes the lock column to rotate and unlock the locking plate, and after folding into place, the locking plate is locked into the folding lock groove of the left support frame with the hook slope.

[0013] Preferably, the foldable pedal structure includes a pedal, a pedal connecting block, a pedal rod, and a fork insert; the pedal connecting block is fixed to the upper end of the pedal, and the pedal connecting block and the fork insert are rotatably connected through the pedal rod.

[0014] Preferably, the front end of the foot pedal connecting block is provided with a limiting surface to restrict the foot pedal from rotating to 90°, and the rear end is provided with a rotation limiting structure that cooperates with the foot pedal rod groove to realize the rotation of the foot pedal angle; after folding, the foot pedal fits snugly and is stored on the side of the right support frame or the left support frame.

[0015] Preferably, the fully threaded fastening and adjustment system includes an armrest adjustment knob, an adjustment block, a locking bolt, and a backrest clamp; loosening the armrest adjustment knob adjusts the armrest height, and tightening it achieves gapless locking; the backrest is connected to the armrest via the backrest clamp, and an adjustment block is provided on the outside of the clamp, and the adjustment block independently adjusts the backrest position.

[0016] Preferably, a metal sheet is provided below the handrail, and a controller is installed thereon. The metal sheet is provided with an oblong hole, and a locking bolt is installed in the oblong hole and connected to the bottom of the handrail. The forward and backward adjustment can be achieved by loosening the locking bolt.

[0017] The specific beneficial effects of this invention are as follows: This invention addresses the shortcomings of existing side-folding electric walking aids by innovating the structure and optimizing integration. It combines high rigidity, high integration, high safety, ease of operation, and aesthetic appeal, perfectly meeting the mobility assistance needs of the elderly and achieving the following core beneficial effects: (1) The bidirectional mechanical locking mechanism of the present invention enables the X-type scissor bar to form a rigid truss after unfolding, which significantly resists torsion and prevents swaying, completely eliminates the risk of "death swaying", improves the rigidity and stability of the unfolded state, and ensures the overall driving safety during use.

[0018] (2) The built-in special-shaped frame of the present invention integrates the battery and controller into a low position, which lowers the center of gravity of the whole machine and improves the anti-rollover ability; the wiring harness is routed inside to avoid exposed wear and snagging, thus extending the product life.

[0019] (3) The foldable pedal structure of the present invention can be stored on the side of the frame, further reducing the size after folding. The folded state hook slope design can prevent accidental unfolding due to vibration during transportation, avoid the risk of pinching, and improve the safety of storage and carrying.

[0020] (4) The present invention uses a full thread fastening adjustment system to replace the traditional ball structure, so as to achieve gapless locking of the armrest and backrest, without shaking or abnormal noise, providing solid support for users and improving the user experience. Attached Figure Description

[0021] Figure 1 This is a structural diagram showing the rear view of the present invention; Figure 2 This is a frontal view structural illustration of the present invention; Figure 3 This is a diagram illustrating the installation structure of the controller according to the present invention; Figure 4 This is an enlarged view of the scissor lift structure of the present invention; Figure 5 This is a diagram showing the disassembled structure of the foot pedal connecting block and the foot pedal rod of the present invention; Figure 6 This is an enlarged view of the handrail and connecting structure of the present invention; Figure 7 This is a diagram illustrating the folding and storage process of the present invention.

[0022] Left frame; 1001, Battery box; 1002, Battery lock; 2000, Right frame; 2001, Controller mounting bracket; 2002, Controller mounting plate; 2003, Lower controller; 3000, Scissor fork lever; 3001, Lock plate body; 3002, Return torsion spring; 3003, Lock pin; 3004, Lock button; 3005, Spring; 3006, Arc hook; 3100, Right support frame; 3101, Left support frame; 4000, Foot pedal; 4001, Foot pedal connecting block; 4002, Foot pedal rod; 4003, Front fork insert; 5001, Armrest adjustment knob; 5002, Adjustment block; 5003, Locking bolt; 5004, Armrest; 5005, Backrest; 5006, Backrest clamp; 5007, Upper controller. Detailed Implementation

[0023] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and 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. Therefore, they should not be construed as limitations on this invention.

[0024] In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0027] Reference manual attached Figure 1-7This invention abandons the traditional round tube frame and external electromechanical layout. Through four core structures—an internal irregular frame, a two-way folding locking mechanism, a foldable pedal structure, and a fully threaded fastening and adjustment system—it achieves high rigidity, low center of gravity, no swaying, and prevention of accidental unfolding in a side-folding electric walker. It solves the technical problems of insufficient rigidity, high center of gravity, exposed wiring, swaying during adjustment, and easy pop-out when folded in existing products.

[0028] Example 1: Concealed irregular frame structure In this embodiment, the main body of the walking aid adopts an internal irregular frame, including a left frame 1000 and a right frame 2000. The frame is made of carbon fiber die casting, which has both structural strength and electrical protection shell functions.

[0029] Furthermore, regarding the battery compartment and battery installation: a battery compartment is located on the lower half of the left frame 1000. The battery box 1001 is installed in the battery compartment using an angled insertion method, making it easy to install and remove, and facilitating quick battery swapping. The outer wall of the battery box 1001 has a locking slot, and a battery lock 1002 is installed in the corresponding position. The battery lock 1002 engages with the locking slot to lock, and can be unlocked by a key, ensuring that the battery remains stable and does not loosen while driving.

[0030] The battery is positioned low to the ground, which significantly lowers the vehicle's center of gravity and improves its ability to resist rollover.

[0031] Furthermore, the control compartment and lower controller are installed as follows: The lower half of the right frame 2000 is the control compartment, which is equipped with left and right mirror-symmetrical controller fixing plates 2002. The controller fixing plates 2002 press and fix the lower controller 2003 from both sides of the bottom. Together with the controller fixing seat 2001 on the outside of the control compartment, the lower controller 2003 is firmly locked in the control compartment without loosening or displacement.

[0032] Furthermore, the wiring harness is concealed inside: both the left frame 1000 and the right frame 2000 have hollow, irregularly shaped structures, with all power and control cables running inside the frame, without any exposed cables. This avoids folding wear and hook breakage, while also improving the overall cleanliness and industrial aesthetics of the vehicle.

[0033] Example 2: Bidirectional Folding Locking Mechanism In this embodiment, the bidirectional folding locking mechanism is set on the right support frame 3100 of the scissor bar 3000, and an inlet surface and a folding lock groove are opened on the left support frame 3101 to realize rigid locking when unfolded and self-locking of the folding hook.

[0034] Furthermore, the mechanism includes: a locking plate 3001, a return torsion spring 3002, a locking post 3003, a locking button 3004, a spring 3005, and an arc hook 3006. The locking post 3003 movably passes through the right support frame 3100, and the locking button 3004 is fixed at its outer end; the inner wall of the locking button 3004 is connected to the outer wall of the right support frame 3100 through the spring 3005, which is in a spring-loaded state by default. The locking plate 3001 is rotatably connected to the right support frame 3100, and the return torsion spring 3002 connects the locking plate 3001 and the right support frame 3100, driving the locking plate 3001 to maintain its initial locking posture under normal conditions.

[0035] Among them, the unfolded state locking: when the walker is unfolded into place, the locking plate 3001 slides into the arc hook 3006 on the scissor bar 3000, and automatically resets and locks the locking pin under the action of the reset torsion spring 3002, so that the X-shaped scissor bar 3000 forms a rigid truss, which can resist torsional deformation and swaying, eliminating "death swaying" from the root.

[0036] Among them, the folding and folding self-locking: When folding is required, press the lock button 3004, push the lock column 3003 to move inward, push the lock plate 3001 to rotate and disengage from the arc hook 3006 limit, and unlock; after the frame is folded to the side, the hook of the lock plate 3001 automatically slides into the folding lock groove of the left support frame 3101. The lock groove is equipped with a barbed bevel, which will "hook" the vehicle when it is vibrated, preventing accidental unfolding and pinching, and improving the safety of storage and transportation.

[0037] When the lock button 3004 is released, the spring 3005 and the reset torsion spring 3002 reset synchronously, and the lock plate 3001 returns to the locked state.

[0038] Example 3: Foldable foot pedal structure In this embodiment, the foldable pedal structure is used to reduce the overall size of the vehicle after folding, and includes: pedal 4000, pedal connecting block 4001, pedal rod 4002, and front fork insert 4003. The pedal connecting block 4001 is fixed to the upper end of the pedal 4000; the front fork insert 4003 is fixed to the outside of the right support frame 3100 / left support frame 3101; the pedal connecting block 4001 and the front fork insert 4003 are rotatably connected through the pedal rod 4002, which can realize forward and backward flipping and left and right flipping.

[0039] Furthermore, the foot pedal connecting block 4001 has a limiting surface at the front end to restrict the foot pedal 4000 from rotating to a 90° position; the rear end has a rotation limiting structure that cooperates with the groove on the foot pedal rod 4002, so that the foot pedal 4000 can rotate within a set angle to avoid excessive rotation.

[0040] Furthermore, the folding and unfolding operation process is as follows: Folding: First, flip the foot pedal 4000 upwards to the limit position, then rotate it counterclockwise at a certain angle along the direction facing the pedal, and finally rotate the foot lever 4002 to fold the foot pedal 4000 against the side of the right support frame 3100 or the left support frame 3101 to complete the folding.

[0041] To reset the foot pedal 4000 to its working state, follow the reverse steps.

[0042] Example 4: Fully Threaded Fastening Adjustment System This embodiment uses full thread fastening to replace the traditional ball pin hole adjustment, completely eliminating adjustment gaps and wobbling, and is used for gapless locking of armrest 5004, backrest 5005, and upper controller 5007.

[0043] Furthermore, the handrail height is adjustable: the handrail 5004 is plugged into the upper part of the frame, and the handrail adjustment knob 5001 is set on the outside of the frame; loosen the handrail adjustment knob 5001, and the handrail 5004 can be raised and lowered; after adjusting to the appropriate height, tighten it, and it will be rigidly fixed without gaps under the action of the threaded locking force, without shaking or abnormal noise.

[0044] Furthermore, the backrest position adjustment: The backrest 5005 adopts a flexible fabric and PVC plastic composite structure, which can bend with the frame without disassembly; the backrest 5005 is connected to the armrest 5004 through the backrest clamp 5006, and the outside of the clamp is equipped with an adjustment block 5002, which can independently fine-tune the angle and position of the backrest 5005 to improve fit and comfort.

[0045] Furthermore, the upper controller is telescopically adjustable: a metal sheet is provided under the armrest 5004, and the upper controller 5007 is installed there. The metal sheet is provided with a waist-shaped hole, and the locking bolt 5003 is installed in the waist-shaped hole and connected to the lower part of the armrest 5004. The front and back adjustment can be achieved by loosening the locking bolt 5003 to adapt to the operating habits of different users; it can be retracted when folded and transported to avoid collision damage.

[0046] Finally, it should be added that the overall work and folding / storage process is as follows: Usage status: The bidirectional folding locking mechanism provides rigid locking, and the scissor bar forms a stable truss; the battery and controller are concealed in a low position, resulting in a low center of gravity and resistance to tipping over; the armrests and backrests are threaded and securely fastened without any wobbling; the foot pedals can be unfolded for use.

[0047] Folding and storage: Press the lock button to unlock the folding mechanism → fold the frame to the side → fold the foot pedals against the frame → the lock plate automatically engages with the folding lock slot to achieve self-locking → the upper controller retracts the slide rail to complete compact storage.

[0048] In the description of this invention, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to 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 invention.

Claims

1. A foldable and lockable electric walking aid, characterized in that, It includes a built-in irregular frame structure, a two-way folding locking mechanism, a foldable pedal structure, and a fully threaded fastening and adjustment system; The concealed irregular frame structure includes a left frame (1000) and a right frame (2000). The lower half of the left frame (1000) is equipped with a battery compartment, and the lower half of the right frame (2000) is equipped with a control compartment. The battery and the lower controller (2003) are concealed and installed in a low position, and the wiring is routed inside the frame. The bidirectional folding locking mechanism is mounted on the support frame of the scissor bar (3000). In the unfolded state, it forms a rigid truss locking mechanism, and in the folded state, it has a barb self-locking mechanism to prevent accidental unfolding. The foldable foot pedal structure can be stored to the side of the support frame to reduce the folded size; The fully threaded fastening adjustment system is used for gapless fastening adjustment of the armrest (5004) and backrest (5005).

2. The foldable and lockable electric walking aid according to claim 1, characterized in that, The concealed irregular frame structure also includes a battery box (1001) and a battery lock (1002). The battery box (1001) is inserted obliquely into the battery compartment. The battery box (1001) is provided with a latching groove. The battery lock (1002) cooperates with the latching groove to lock, and the key is used to unlock.

3. The foldable and lockable electric walking aid according to claim 1, characterized in that, The control cabin is equipped with a controller mounting plate (2002) and a controller mounting base (2001) that are mirror-symmetrical on the left and right sides. The controller mounting plate (2002) presses and fixes the bottom sides of the lower controller (2003), and together with the controller mounting base (2001), locks the lower controller (2003) into the control compartment.

4. The foldable and lockable electric walking aid according to claim 1, characterized in that, The bidirectional folding locking mechanism includes a locking plate (3001), a return torsion spring (3002), a locking column (3003), a locking button (3004), a spring (3005), and an arc hook (3006). The locking cylinder (3003) moves through the right support frame (3100), and a locking button (3004) is fixedly connected to the outer end of the locking cylinder (3003). The locking button (3004) is connected to the right support frame (3100) through a spring (3005), and the locking plate (3001) is rotatably connected to the right support frame (3100) through a reset torsion spring (3002).

5. A foldable and lockable electric walking aid according to claim 4, characterized in that, In the unfolded state, the locking plate (3001) slides into the arc hook (3006), and the reset torsion spring (3002) drives the locking plate (3001) to lock the locking pin, and the scissor bar (3000) forms a rigid truss; In the folded state, pressing the lock button (3004) pushes the lock cylinder (3003) to rotate the lock plate (3001) to unlock. After folding into place, the lock plate (3001) is engaged in the folding lock groove of the left support frame (3101) with a hook-shaped bevel.

6. A foldable and lockable electric walking aid according to claim 1, characterized in that, The foldable pedal structure includes a pedal (4000), a pedal connecting block (4001), a pedal rod (4002), and a fork insert (4003). The pedal connecting block (4001) is fixed to the upper end of the pedal (4000), and the pedal connecting block (4001) and the fork insert (4003) are rotatably connected through the pedal rod (4002).

7. A foldable and lockable electric walking aid according to claim 6, characterized in that, The foot pedal connecting block (4001) has a limiting surface at the front end to restrict the foot pedal (4000) from rotating to 90°, and a rotation limiting structure at the rear end to cooperate with the groove of the foot pedal rod (4002) to realize the rotation angle of the foot pedal (4000); After folding, the foot pedal (4000) is neatly stored on the side of the right support frame (3100) or the left support frame (3101).

8. A foldable and lockable electric walking aid according to claim 1, characterized in that, The fully threaded fastening and adjustment system includes an armrest adjustment knob (5001), an adjustment block (5002), a locking bolt (5003), and a backrest clamp (5006). Loosening the handrail adjustment knob (5001) adjusts the height of the handrail (5004), while tightening it achieves a gapless lock. The backrest (5005) is connected to the armrest (5004) via a backrest clamp (5006). An adjustment block (5002) is provided on the outside of the clamp (5006), and the adjustment block (5002) can independently adjust the position of the backrest (5005).

9. A foldable and lockable electric walking aid according to claim 8, characterized in that, The handrail (5004) is provided with a metal sheet below and the controller (5007) is installed on it. The metal sheet is provided with a waist-shaped hole, and the waist-shaped hole is used to install a locking bolt (5003) and connect to the bottom of the handrail (5004). The front and back adjustment can be achieved by loosening the locking bolt (5003).

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