A modular electric wheelchair battery compartment

Abstract

This utility model provides a modular electric wheelchair battery compartment, including a compartment body containing a battery module. The upper end of the compartment body is connected to a screw drive assembly via a quick-connect fitting. A handwheel is provided on one side of the screw drive assembly. The quick-connect fitting includes a first sliding block, a second sliding block, and a hinge positioning component. The first sliding block is connected to the screw in the screw drive assembly, and the hinge positioning component is fixedly connected to the compartment body. A hinge latch is also provided at the upper end of the hinge positioning component. The advantages of this utility model are: through the dual movement mechanism of screw drive and sliding pair, the compartment body can be pulled out step by step. The user can expose the charging port to the side of the wheelchair by turning the handwheel, without disassembling the battery module or requiring assistance from others, significantly improving the convenience of independent operation; the support design of the hinge latch prevents the compartment body from tipping over during movement, ensuring stability during use.

Description

Technical Field

[0001] This utility model mainly relates to the field of electric wheelchair technology, specifically to a modular electric wheelchair battery compartment. Background Technology

[0002] As an important medical assistive device to help people with mobility impairments and the elderly achieve independent mobility, electric wheelchairs have seen a significant increase in popularity and functional demand in recent years due to the aging society and the development of rehabilitation medical technology. Through the coordinated work of motor drive, control system and energy storage battery, they provide users with convenient short-distance travel capabilities and are a key tool for improving independence and quality of life.

[0003] During the actual implementation process, the inventors discovered the following defects:

[0004] Traditional electric wheelchairs typically use a rigid, fixed battery compartment that is directly installed under the wheelchair base or seat. While this design ensures battery stability, charging requires users to manually disassemble the battery module or rely on caregivers to pull out the compartment, which is cumbersome and demands a high level of user autonomy. Furthermore, the rigid connection between the battery compartment and the wheelchair frame prevents the battery compartment from being adjusted synchronously when folded for storage. This also makes the compartment prone to interfering with other components (such as leg rests and footrests), resulting in a large storage volume and inconvenient transport, which seriously affects the user's actual experience.

[0005] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art. Utility Model Content

[0006] 1. The technical problem to be solved by the utility model:

[0007] This invention provides a modular electric wheelchair battery compartment to solve the technical problems existing in the background art.

[0008] 2. Technical Solution:

[0009] To achieve the above objectives, the technical solution provided by this utility model is as follows: a modular electric wheelchair battery compartment, including a compartment body, a battery module disposed inside the compartment body, the upper end of the compartment body being connected to a screw drive assembly via a quick connector, a handwheel being disposed on one side of the screw drive assembly, the quick connector including a sliding block one, a sliding block two, and a hinge positioning component, the sliding block one being connected to the screw in the screw drive assembly, the hinge positioning component being fixedly connected to the compartment body, and a hinge buckle being disposed at the upper end of the hinge positioning component.

[0010] Furthermore, a belt buckle is provided on one side of the cabin, and heat dissipation holes are provided on the cabin. The cabin is fixedly connected to the hinge positioning component by locking bolts.

[0011] Furthermore, one end of the charging port of the battery module is located near the belt buckle, and the battery module is embedded in the cabin through the belt buckle.

[0012] Furthermore, the first sliding block has a dovetail groove, and the side of the first sliding block near the hinge buckle also has a slot. Limiting blocks are provided at both ends of the dovetail groove, and the second sliding block is slidably connected to the first sliding block through the dovetail groove.

[0013] Furthermore, the hinge latch includes a fixing part and a snap-fit ​​part. The fixing part is T-shaped and fixedly connected to the upper end face of the hinge positioning member, and the end of the snap-fit ​​part is embedded in the snap-fit ​​groove.

[0014] Furthermore, the lower end of the hinge positioning component is fixedly connected to the second sliding block, and one side of the hinge positioning component is an L-shaped plate, which is fixedly connected to the cabin body.

[0015] 3. Beneficial effects:

[0016] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0017] The cabin is pulled out in stages through a dual movement mechanism of screw drive and sliding pair. Users can expose the charging port on the side of the wheelchair by turning the handwheel, without disassembling the battery module or requiring assistance from others, which significantly improves the convenience of independent operation. The hinge buckle support design prevents the cabin from tipping over during movement, ensuring stability during use.

[0018] The rotatable structure of the hinge connector, combined with the release function of the hinge latch, allows the cabin to flip and fit snugly against the base when the wheelchair is folded, effectively reducing the storage volume, avoiding interference with other components, and improving the portability and storage flexibility of the wheelchair.

[0019] It should be noted that the structures not described in this utility model are the same as or can be implemented using existing technology, and will not be elaborated here, as they do not involve the design points and improvement directions of this utility model. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of this utility model from another angle;

[0022] Figure 3 This is a partial structural schematic diagram of the present invention;

[0023] Figure 4 This is a partial structural diagram of the present invention from another angle.

[0024] Figure label:

[0025] 1. Cabin; 2. Battery module; 3. Quick connector; 301. Sliding block one; 3011. Dovetail groove; 3012. Slot; 3013. Limiting block; 302. Sliding block two; 303. Hinge positioning component; 304. Hinge buckle; 3041. Fixing part; 3042. Snap-fit ​​part; 4. Screw drive assembly; 5. Handwheel; 6. Belt buckle; 7. Heat dissipation hole. Detailed Implementation

[0026] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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 utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" 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 according to the specific circumstances. Example

[0030] See attached document Figure 1-4 A modular electric wheelchair battery compartment includes a compartment body 1, a battery module 2 inside the compartment body 1, and a screw drive assembly 4 connected to the upper end of the compartment body 1 via a quick connector 3. A handwheel 5 is provided on one side of the screw drive assembly 4. The quick connector 3 includes a sliding block 301, a sliding block 302, and a hinge positioning component 303. The sliding block 301 is connected to the screw in the screw drive assembly 4, and the hinge positioning component 303 is fixedly connected to the compartment body 1. A hinge buckle 304 is also provided at the upper end of the hinge positioning component 303.

[0031] This modular electric wheelchair battery compartment is a movable energy storage unit for electric wheelchairs. Its core consists of a compartment body 1, a battery module 2, quick-connect fittings 3, a screw drive assembly 4, and a handwheel 5. The compartment body 1 serves as the main support for the battery module 2, and its upper end is movably connected to the screw drive assembly 4 via quick-connect fittings 3, forming a "power transmission-movement execution" linkage system. The screw drive assembly 4 is the power output structure, and the handwheel 5 on one side serves as the user operation interface. The handwheel 5 is located on the wheelchair armrest side, conforming to ergonomic operating habits; rotating the handwheel 5 drives the screw drive assembly 4. Quick-connect fittings... Component 3 is the core hub connecting the cabin 1 and the screw transmission assembly 4. It consists of sliding block 1 301, sliding block 2 302, and hinge positioning component 303. Sliding block 1 301 directly meshes with the screw of the screw transmission assembly 4, converting the rotational motion of the screw into linear motion. Sliding block 2 302 is connected to sliding block 1 301 through a sliding pair to achieve secondary movement. One end of hinge positioning component 303 is rigidly connected to cabin 1, and the other end is fixed to sliding block 2 302. At the same time, it is temporarily locked to sliding block 1 301 through the upper hinge buckle 304 to ensure the synchronization of cabin 1 and sliding block 1 301 during movement.

[0032] The cabin 1 serves as a protective and securing carrier for the battery module 2. The belt buckle 6 is located on one side of the cabin 1, close to the outer side of the wheelchair, and is the fixing mechanism for the battery module 2. It uses elastic clamping force to secure the battery module 2 inside the cabin 1, while also supporting manual pressing to unlock, enabling quick assembly and disassembly of the battery module. The heat dissipation holes 7 are opened on the side or top of the cabin 1 to provide a heat dissipation channel for the operation of the battery module 2, ensuring that the heat generated by the battery during charging and discharging can be dissipated in time, avoiding performance degradation or safety risks caused by heat accumulation.

[0033] The charging port of the battery module 2 is located near the buckle 6 of the cabin 1 (i.e., near the outside of the wheelchair). When the cabin 1 is pulled out, the charging port is naturally exposed on the side of the wheelchair. The user can directly insert the charging cable into the charging port to complete the charging without disassembling the battery module 2. The battery module 2 is embedded in the cabin 1 through the buckle 6 on one side of the cabin 1. The elastic claw of the buckle 6 can adapt to the outer contour of the battery module 2 and provide a stable clamping force. After pressing the unlock button of the buckle 6, the battery module 2 can be easily removed, realizing the need for quick replacement with one hand.

[0034] Sliding block 1 301 and sliding block 2 302 form a "main-secondary" sliding pair. The dovetail groove 3011 is opened on the lower surface of sliding block 1 301 to guide the movement of sliding block 2 302 and limit the degree of freedom of sliding block 2 302 in the non-moving direction (such as up and down swaying), ensuring the smoothness of the sliding process. The slot 3012 is located on the side of sliding block 1 301 near the hinge latch 304 and forms a "lock-on-lock" fit with the locking part 3042 of the hinge latch 304. The end of the locking part 3042 is embedded in the slot 3012 of sliding block 1 301. During the movement of the cabin 1 with sliding block 1 301, the supporting locking part 3042 provides lateral support to the hinge connector 303 through the slot 3012, ensuring that the hinge connector 303 remains horizontal and preventing the cabin 1 from tilting or jamming during movement.

[0035] When the electric wheelchair is in the unfolded state: the support latch 3042 of the hinge buckle 304 is embedded in the slot 3012 of the sliding block 1 301, and the rotational freedom of the hinge connector 303 is restricted by the supporting force to ensure that the hinge connector 303 remains in a horizontal state. The cabin 1 is fixed to the sliding block 2 302 through the hinge connector 303, and can be pulled out or reset as the sliding block 1 301 moves, with no risk of tipping over during the movement; when the electric wheelchair needs to be folded: the user manually removes the support latch 3042 of the hinge buckle 304 from the slot 3012 of the sliding block 1 301. At this time, the rotatable hinge point of the hinge connector 303 loses lateral support and restores its free rotation ability. As the bottom frame of the wheelchair seat is folded, the rotation direction of the hinge connector 303 is consistent with the folding direction of the wheelchair, causing the cabin 1 to flip synchronously. The bottom surface of the cabin 1 gradually fits towards the wheelchair base, reducing the overall storage volume of the wheelchair and making it easier to transport or store.

[0036] In this embodiment, the battery compartment achieves the core objective of allowing users to independently complete the charging operation through a dual movement mechanism of "screw drive + sliding pair". The specific operation steps are as follows:

[0037] Screw drive stage (initial pull-out): The user turns the handwheel 5 on the armrest side of the wheelchair, driving the screw of the screw drive assembly 4 to rotate. Since the sliding block 301 engages with the screw, the rotational motion of the screw is converted into the linear movement of the sliding block 301 (towards the outside of the wheelchair). At this time, the latching part 3042 of the hinge buckle 304 is embedded in the slot 3012 of the sliding block 301. The sliding block 301 drives the sliding block 302 and the cabin 1 to move synchronously through the hinge positioning part 303. When the sliding block 301 moves to the end of the screw (stopped by the limiting structure of the screw itself), the cabin 1 completes the initial pull-out.

[0038] Sliding pair fine-tuning stage (secondary pull-out): When sliding block 1 301 reaches the screw limit position, the user manually pulls the cabin 1 outward (the direction of force is the same as the direction of movement). Since sliding block 2 302 is slidably connected to sliding block 1 301 through dovetail groove 3011, sliding block 2 302 can continue to slide outward along dovetail groove 3011 (limited by the limit blocks 3013 at both ends of the dovetail groove), driving the cabin 1 to be pulled out further. The total pull-out distance = screw stroke + sliding pair stroke. At this time, the charging port of battery module 2 is fully exposed on the side of the wheelchair, and the user can directly insert the charging cable to complete the charging without disassembling battery module 2.

[0039] Reset and lock: After charging is complete, the user pushes the cabin 1 to move inward, and the second sliding block 302 resets to the initial position along the dovetail groove 3011. The handwheel 5 is rotated in the opposite direction to drive the first sliding block 301 to move inward along the screw. Finally, the cabin 1 is completely reset to the hidden position at the bottom of the seat, completing the entire process.

[0040] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A modular electric wheelchair battery compartment, characterized in that: The device includes a housing (1), which contains a battery module (2). The upper end of the housing (1) is connected to a screw drive assembly (4) via a quick connector (3). A handwheel (5) is provided on one side of the screw drive assembly (4). The quick connector (3) includes a sliding block one (301), a sliding block two (302), and a hinge positioning component (303). The sliding block one (301) is connected to the screw in the screw drive assembly (4). The hinge positioning component (303) is fixedly connected to the housing (1). The upper end of the hinge positioning component (303) is also provided with a hinge buckle (304).

2. A modular electric wheelchair battery compartment according to claim 1, characterized in that: The cabin (1) has a belt buckle (6) on one side and a heat dissipation hole (7) on the cabin (1). The cabin (1) is fixedly connected to the hinge positioning part (303) by a locking bolt.

3. A modular electric wheelchair battery compartment according to claim 2, wherein: The charging port of the battery module (2) is located near the belt buckle (6), and the battery module (2) is embedded in the cabin (1) through the belt buckle (6).

4. The modular electric wheelchair battery compartment of claim 1, wherein: The first sliding block (301) is provided with a dovetail groove (3011), and the first sliding block (301) is also provided with a slot (3012) on the side near the hinge buckle (304). The dovetail groove (3011) is provided with limit blocks (3013) at both ends. The second sliding block (302) is slidably connected to the first sliding block (301) through the dovetail groove (3011).

5. The modular electric wheelchair battery compartment of claim 4, wherein: The hinge latch (304) includes a fixing part (3041) and a snap-fit ​​part (3042). The fixing part (3041) is T-shaped and fixedly connected to the upper end face of the hinge positioning member (303). The end of the snap-fit ​​part (3042) is embedded in the slot (3012).

6. The modular electric wheelchair battery compartment of claim 1, wherein: The lower end of the hinge positioning component (303) is fixedly connected to the sliding block (302), and one side of the hinge positioning component (303) is an L-shaped plate, which is fixedly connected to the cabin body (1).

Images