Battery mounting structure of electric wheelchair

Abstract

The utility model relates to the technical field of medical instruments, and discloses an electric wheelchair battery installation structure, the back of a battery body is provided with a clamping groove which is clamped on a fixing seat in a sliding mode, the bottom of the clamping groove is provided with a positioning column, the fixing seat is provided with a positioning groove for the positioning column to be clamped in a sliding mode, and the side face of the positioning column is provided with a limiting piece in a telescopic mode. The side edge of the positioning groove is provided with a limiting groove used for being connected with the limiting piece in a clamped mode so that the positioning column can be prevented from moving in the sliding direction of the clamping groove and the fixing base. And the position of the battery body can be limited in two vertical directions at the same time, so that the mounting stability of the electromagnetic body is ensured. The locking mechanism and the unlocking mechanism can respectively complete rapid locking and unlocking of the battery body, so that the disassembly and assembly efficiency and convenience of the battery body are improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a battery mounting structure for an electric wheelchair. Background Technology

[0002] Electric wheelchairs are based on ordinary wheelchairs, with the addition of a motor, electronic control system, battery, and electric steering mechanism, allowing users to control the wheelchair's forward, backward, and directional movements via a joystick. Compared to traditional manual wheelchairs, this method is more labor-saving and convenient, significantly improving the user experience. A similar electric wheelchair is disclosed in utility model patent CN213607563U.

[0003] The aforementioned electric wheelchair has its battery fixedly installed on the wheelchair body. This means that the wheelchair cannot be used while charging, and the wheelchair's range is also limited by the limited battery capacity. In addition, the fixed installation structure makes it troublesome to replace the battery later. Therefore, improvements are needed. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies by providing a battery installation structure for electric wheelchairs, enabling rapid battery replacement and thus improving the efficiency and convenience of electric wheelchair use.

[0005] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method:

[0006] An electric wheelchair battery mounting structure includes a battery body and a mounting base disposed on the electric wheelchair body. The back of the battery body has a locking groove for sliding engagement with the mounting base. A positioning post is disposed at the bottom of the locking groove. The mounting base has a positioning groove for the positioning post to slide and engage. A limiting member is telescopically disposed on the side of the positioning post. A limiting groove is disposed on the side of the positioning groove for the limiting member to engage, preventing the positioning post from moving along the sliding direction between the locking groove and the mounting base. The positioning post has a locking member that keeps the limiting member extended at a first extreme position and allows the limiting member to retract at a second extreme position. The positioning post also has a locking mechanism that allows the locking member to maintain a tendency to stay at the first extreme position and an unlocking mechanism that responds to an external trigger to move the locking member to the second extreme position.

[0007] By employing the above-described scheme, the sliding engagement between the locking slot and the fixing base, and the locking engagement between the limiting component and the limiting slot, can simultaneously limit the position of the battery body in two vertical directions, thereby ensuring the stable installation of the electromagnetic body. The locking and unlocking mechanisms can respectively achieve quick locking and unlocking of the battery body, thus improving the efficiency and convenience of battery body installation and removal. This replaceable battery design allows for alternating battery use, thereby increasing the electric wheelchair's range and reducing the difficulty of later maintenance.

[0008] Preferably, the locking member is slidably disposed inside the positioning post, and an avoidance groove is provided on the outer side of the locking member near the tail end; when the locking member retracts to the first limit position, the outer wall of the locking member abuts against the limiting member to drive the limiting member to extend; when the locking member extends to the second limit position, the avoidance groove moves to the position of the limiting member to provide retraction space for the limiting member.

[0009] By adopting the above solution, the cooperation between the locking component and the clearance groove can quickly switch the extension and retraction state of the limiting component, further improving operational efficiency and convenience.

[0010] Preferably, the locking mechanism is a guide spring assembly connected to the locking member to provide elastic tension to the locking member for retraction.

[0011] Preferably, the guide spring assembly includes a guide sleeve disposed within the battery body, a guide rod that slides through the guide sleeve and is connected to the tail end of the locking member, and an elastic member disposed in the guide sleeve to give the guide rod a backward tendency.

[0012] By adopting the above scheme, the locking mechanism can provide a stable and directional elastic tension to the locking component, making the movement of the locking component more precise and efficient.

[0013] Preferably, the unlocking mechanism is a pressing member located at the end of the guide rod away from the locking member, with the pressing member exposed on the side of the battery body away from the latching groove.

[0014] Using the above solution, the pressing component is easy to operate, and it can quickly unlock the battery body and achieve one-handed disassembly of the battery.

[0015] Preferably, the elastic element is a compression spring sleeved on the guide sleeve, with one end of the compression spring pressing against the end of the guide sleeve near the locking element and the other end pressing against the pressing element.

[0016] The above solution features a simple compression spring structure, convenient installation, low cost, and provides stable and durable elastic support, thereby ensuring the elasticity of the guide spring assembly.

[0017] Preferably, the side of the battery body away from the slot has a through hole for the extension and retraction of the pressing member, and the outside of the pressing member is provided with an anti-dislodgement member to prevent the pressing member from dislodging from the through hole.

[0018] By adopting the above solution, the anti-detachment component can effectively prevent the pressing component from detaching from the battery body, thereby preventing its loss and making it more user-friendly.

[0019] Preferably, the limiting member is spherical, and the shape of the limiting groove is adapted to the spherical shape of the limiting member protruding from the positioning post.

[0020] By adopting the above solution, the spherical limiting member not only extends and retracts more smoothly, but its protruding arc surface can also play a guiding role, so that when the locking member is in the second limit position, the limiting member can automatically retract with the movement of the battery body on the fixed seat, further improving the efficiency of battery body disassembly and assembly.

[0021] Preferably, the two opposite sidewalls inside the snap-fit ​​groove are each arranged with several snap-fit ​​blocks along their own length direction. Both sides of the fixing seat are provided with snap-fit ​​strips for the two rows of snap-fit ​​blocks to slide and snap-fit. The snap-fit ​​strips are provided with slots for the snap-fit ​​blocks to enter the back of the snap-fit ​​strips or to disengage from the snap-fit ​​strips.

[0022] By adopting the above solution, the locking slot can be locked onto the fixed base along a sliding direction perpendicular to itself, thereby shortening the sliding and locking stroke of the locking slot and further improving operational efficiency and convenience.

[0023] Preferably, the mounting base is provided with a power input port that is electrically connected to the electric wheelchair body, and the battery body is provided with a power supply port. When the locking slot slides and engages with the mounting base and the positioning pin engages with the positioning slot, the power supply port and the power input port are connected, so that the battery body and the electric wheelchair body are electrically connected.

[0024] Using the above solution, when the slot on the battery body is aligned with the mounting base, the battery body can automatically establish an electrical connection with the electric wheelchair body. Furthermore, the engagement between the slot and the mounting base acts as a guide, ensuring that the power supply port can precisely align with the power take-off port, thereby further increasing operational efficiency and convenience.

[0025] This utility model, by adopting the above technical solutions, has significant technical advantages: the sliding engagement between the locking groove and the fixing base, and the locking engagement between the limiting member and the limiting groove, can simultaneously limit the position of the battery body in two vertical directions, thereby ensuring the stability of the electromagnetic body installation. The locking and unlocking mechanisms can respectively complete the quick locking and unlocking of the battery body, thereby improving the efficiency and convenience of battery body installation and removal. Thus, the replaceable design of the battery body allows for the alternating use of batteries, thereby increasing the electric wheelchair's range and reducing the difficulty of later maintenance. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this embodiment. Figure 1 ;

[0027] Figure 2 for Figure 1 An enlarged schematic diagram of part A shown;

[0028] Figure 3 This is a schematic diagram of the structure of this embodiment. Figure 2 ;

[0029] Figure 4 for Figure 3 An enlarged schematic diagram of part B is shown below;

[0030] Figure 5 This is a schematic diagram of the structure of this embodiment. Figure 3 ;

[0031] Figure 6 for Figure 5 An enlarged schematic diagram of section C is shown below;

[0032] Figure 7 This is a schematic diagram of the structure when the locking member is in the first extreme position in this embodiment;

[0033] Figure 8 for Figure 7 An enlarged schematic diagram of part D is shown below;

[0034] Figure 9 This is a schematic diagram of the structure when the locking member is in the second extreme position in this embodiment;

[0035] Figure 10 for Figure 9 An enlarged schematic diagram of part E shown;

[0036] Figure 11 This is a schematic diagram of the structure of this embodiment. Figure 4 ;

[0037] Figure 12 This is a circuit diagram of this embodiment.

[0038] The parts referred to by the numbers in the attached diagrams are as follows: 1. Battery body; 2. Electric wheelchair body; 3. Fixing base; 4. Snap-fit ​​groove; 5. Positioning post; 6. Positioning groove; 7. Limiting component; 8. Limiting groove; 9. Locking component; 10. Clearance groove; 12. Guide sleeve; 13. Guide rod; 14. Elastic component; 15. Pressing component; 16. Perforation; 17. Anti-detachment component; 18. Snap-fit ​​block; 19. Snap-fit ​​strip; 20. Slot; 21. Power input port; 22. Power supply port; 23. Mounting base; 24. Snap-fit ​​interval; 25. Telescopic groove; 26. First sliding channel; 27. Second sliding channel; 28. Mounting platform; 29. ​​Mounting groove; 30. Power control module; 31. Battery cell; 32. Guide slope; 33. Motor; 34. Screw. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0040] like Figures 1 to 12 As shown, this embodiment discloses an electric wheelchair battery mounting structure, including a battery body 1 and a fixing seat 3 disposed on the electric wheelchair body 2. The fixing seat 3 is a vertical strip, with rear mounting seats 23 integrally connected to both ends. The mounting seats 23 are fixed to the side of the electric wheelchair body 2 by screws 34, so that the fixing seat 3 protrudes forward, thereby facilitating the docking of the battery body 1. The back of the battery body 1 has a longitudinally formed locking groove 4 for sliding and engaging with the fixing seat 3. Specifically, two locking blocks 18 are arranged along the length of each of the two opposite sidewalls in the locking groove 4, and a locking gap 24 is maintained between the locking blocks 18 and the bottom of the locking groove 4. Both sides of the fixing seat 3 are provided with locking strips 19 for sliding and engaging with the two rows of locking blocks 18 respectively. The locking strips 19 have slots 20 for the locking blocks 18 to enter or disengage from the locking strips 19.

[0041] To lock or unlock the battery body 1, a positioning post 5 is vertically fixed at the bottom and top of the locking groove 4. A positioning groove 6 is provided on the fixing base 3 for the positioning post 5 to slide and engage after horizontal insertion. The positioning groove 6 is vertically elongated, with a width equal to or slightly larger than the width of the positioning post 5 to facilitate insertion. Laterally retractable limiting members 7 are provided on both sides of the positioning post 5. The limiting members 7 are spherical, and a telescopic groove 25 is provided on the side wall of the positioning post 5 for the sliding and telescopic movement of the limiting members 7. The outer opening of the telescopic groove 25 is smaller than the spherical diameter of the limiting member 7, thus preventing the limiting member 7 from disengaging from the telescopic groove 25. Limiting grooves 8 are provided on both sides of the positioning groove 6 for the two limiting members 7 to engage, preventing the positioning post 5 from moving along the sliding direction of the locking groove 4 and the fixing base 3. The shape of the limiting groove 8 is adapted to the spherical shape of the limiting member 7 protruding from the positioning post 5, i.e., it is a concave spherical arc surface. The positioning post 5 is provided with a locking member 9 that keeps the limiting member 7 in an extended state at a first extreme position and allows the limiting member 7 to have a retractable space at a second extreme position. The positioning post 5 is also provided with a locking mechanism that allows the locking member 9 to maintain a tendency to the first extreme position and an unlocking mechanism that responds to an external trigger to move the locking member 9 to the second extreme position.

[0042] Specifically, the locking member 9 is cylindrical, and a first sliding channel 26 is provided at the center of the end of the positioning post 5 for the locking member 9 to slide along the length of the positioning post 5. The first sliding channel 26 is connected to the telescopic groove 25. An avoidance groove 10 is provided around the outer side of the locking member 9 at the tail end. When the locking member 9 retracts to the first limit position, the outer wall of the locking member 9 abuts against the limiting member 7 to drive the limiting member 7 to extend. Conversely, when the locking member 9 extends to the second limit position, the avoidance groove 10 moves to the position of the limiting member 7 to provide retraction space for the limiting member 7. When the limiting member 7 retracts into the avoidance groove 10, the limiting member 7 will neither disengage from the corresponding telescopic groove 25 nor protrude from the outer wall of the positioning post 5, so as to facilitate the longitudinal movement of the positioning post 5 in the positioning groove 6, and at the same time allow the positioning post 5 to smoothly enter and exit the positioning groove 6. To facilitate the opening of the limiting member 7 by the locking member 9, a guide slope 32 is provided at the connection between the locking member 9 and the relief groove 10 to prevent jamming when the limiting member 7 is opened.

[0043] To achieve the locking function of the locking mechanism, the locking mechanism is a guide spring assembly connected to the locking member 9 to provide elastic tension for retraction. Specifically, the guide spring assembly includes a guide sleeve 12 disposed within the battery body 1, a guide rod 13 slidably passing through the guide sleeve 12 and fixedly connected to the tail end of the locking member 9, and an elastic member 14 disposed within the guide sleeve 12 to give the guide rod 13 a backward tendency. The guide sleeve 12 is horizontally disposed within the battery body 1 and integrally connected to the side wall of the snap-fit ​​groove 4. Furthermore, a second sliding channel 27 within the guide sleeve 12 through which the guide rod 13 slides is connected to a first sliding channel 26.

[0044] To enable the unlocking mechanism, it is a pressing member 15 fixed to the end of the guide rod 13 away from the locking member 9. The pressing member 15 is exposed on the side of the battery body 1 away from the locking groove 4, thus facilitating user operation. In this embodiment, the elastic member 14 is a compression spring sleeved on the guide sleeve 12. One end of the compression spring abuts against the side wall where the bottom of the locking groove 4 is located, and the other end abuts against the side of the pressing member 15 near the locking groove 4. A through hole 16 is provided on the side of the battery body 1 away from the locking groove 4 for the pressing member 15 to extend and retract. An anti-disengagement member 17 is provided on the outer side of the pressing member 15 to prevent the pressing member 15 from disengaging from the through hole 16. The anti-disengagement member 17 is annular, integrally ringed on the outer side of the pressing member 15, and its outer diameter is larger than the diameter of the through hole 16, thereby playing the role of preventing disengagement.

[0045] To achieve automatic electrical connection between the battery and the electric wheelchair, a mounting platform 28 is fixedly provided on the front and lower end of the mounting base 3. A mounting groove 29 is provided on the bottom of the battery body 1 for longitudinal insertion of the mounting platform 28. The cooperation between the mounting platform 28 and the mounting groove 29 allows for longitudinal pre-positioning of the battery body 1, making the installation of the battery body 1 more precise and efficient. The upper surface of the mounting platform 28 is provided with a power input port 21 electrically connected to the built-in power control module 30 of the electric wheelchair body 2. The lower side wall of the mounting groove 29 is provided with a power supply port 22 electrically connected to the built-in battery cell 31 of the battery body 1. The power input port 21 and the power supply port 22 are preferably paired power plug assemblies. When the snap-fit ​​groove 4 slides and snaps into the mounting base 3 and the positioning post 5 aligns with the positioning groove 6, the power supply port 22 aligns with the power input port 21, thus completing the electrical connection between the battery body 1 and the electric wheelchair body 2, enabling the battery body 1 to supply power to the electric wheelchair body 2.

[0046] The specific usage process is as follows:

[0047] When installing the battery body 1, first overcome the elasticity of the guide spring assembly and press down the pressing member 15 to drive the locking member 9 to extend to the second limit position, thereby creating space for the limiting member 7 to retract. Then, push the locking blocks 18 on both sides of the locking groove 4 on the battery body 1 laterally into the locking strips 19 on both sides of the fixing base 3 through the slot 20, so that the locking strips 19 laterally enter the locking interval 24. At the same time, the positioning pin 5 on the battery body 1 is inserted laterally into the positioning groove 6 on the fixing base 3, so that the limiting member 7 can automatically retract under the pressure of the side of the positioning groove 6. After the positioning pin 5 is fully inserted, release the pressing member 15, and then press down on the battery body 1 to push the locking interval 24 into the locking strips 19 on both sides of the fixing base 3, thereby completing the sliding locking of the locking groove 4 and the fixing base 3. When the mounting groove 29 aligns with the mounting platform 28, the power supply port 22 on the battery body 1 aligns with the power take-up port 21 on the mounting platform 28, thereby completing the electrical connection between the battery body 1 and the electric wheelchair body 2. At the same time, the positioning post 5 moves downward to the bottom of the positioning groove 6, and the locking member 9 can return to the first limit position under the elastic force of the guide spring assembly, thereby using its own outer wall to open the limiting members 7 on both sides, so that the limiting member 7 extends out of the positioning post 5 and is engaged in the corresponding limiting groove 8, thereby locking the battery body 1.

[0048] In this state, the battery body 1 can supply power to the power control module 30, and the power control module 30 distributes the electrical energy to the coupled motor 33 to drive the motor 33 to work, thereby driving the electric wheelchair body 2 to run.

[0049] When disassembling the battery body 1, first press the pressing member 15 to release the lock of the battery body 1, then push the battery body 1 upward so that the locking blocks 18 on both sides of the locking groove 4 rise to the position directly opposite the slot 20. Then push the battery body 1 horizontally away from the fixing base 3 so that the locking blocks 18 disengage from the locking strip 19 through the slot 20 and the positioning pin 5 disengages from the positioning groove 6, thereby completing the disassembly of the battery body 1.

Claims

1. A battery mounting structure for an electric wheelchair, characterized in that: Includes a battery body (1) and a mounting base (3) mounted on the electric wheelchair body (2). The back of the battery body (1) has a locking groove (4) that slides and engages with the mounting base (3). A positioning post (5) is provided at the bottom of the locking groove (4). The mounting base (3) has a positioning groove (6) for the positioning post (5) to slide and engage. A limiting member (7) is provided on the side of the positioning post (5). A limiting groove (8) is provided on the side of the positioning groove (6) for the limiting member (7) to engage. To prevent the positioning post (5) from moving along the sliding direction of the locking groove (4) and the fixed seat (3), the positioning post (5) is provided with a locking member (9) that keeps the limiting member (7) in an extended state at a first extreme position and allows the limiting member (7) to have a retraction space at a second extreme position. The positioning post (5) is also provided with a locking mechanism that allows the locking member (9) to maintain the tendency of the first extreme position and an unlocking mechanism that responds to external triggering to move the locking member (9) to the second extreme position.

2. The electric wheelchair battery mounting structure according to claim 1, characterized in that: The locking member (9) is slidably disposed inside the positioning post (5), and a relief groove (10) is provided on the outer side of the locking member (9) near the tail end; when the locking member (9) retracts to the first limit position, the outer wall of the locking member (9) abuts against the limiting member (7) to drive the limiting member (7) to extend; when the locking member (9) extends to the second limit position, the relief groove (10) moves to the position of the limiting member (7) to provide the limiting member (7) with retraction space.

3. The electric wheelchair battery mounting structure according to claim 2, characterized in that: The locking mechanism is a guide spring assembly connected to the locking member (9) to provide elastic tension to the locking member (9) for retraction.

4. The electric wheelchair battery mounting structure according to claim 3, characterized in that: The guide spring assembly includes a guide sleeve (12) disposed in the battery body (1), a guide rod (13) that slides through the guide sleeve (12) and is connected to the tail end of the locking member (9), and an elastic member (14) disposed in the guide sleeve (12) to give the guide rod (13) a backward tendency.

5. The electric wheelchair battery mounting structure according to claim 4, characterized in that: The unlocking mechanism is a pressing member (15) located at the end of the guide rod (13) away from the locking member (9), and the pressing member (15) is exposed on the side of the battery body (1) away from the latching groove (4).

6. The electric wheelchair battery mounting structure according to claim 5, characterized in that: The elastic element (14) is a compression spring sleeved on the guide sleeve (12). One end of the compression spring presses against the end of the guide sleeve (12) near the locking element (9), and the other end presses against the pressing element (15).

7. The electric wheelchair battery mounting structure according to claim 5, characterized in that: The battery body (1) has a through hole (16) on the side away from the snap-fit ​​groove (4) for the extension and retraction of the pressing member (15), and an anti-disengagement member (17) is provided on the outside of the pressing member (15) to prevent the pressing member (15) from disengaging from the through hole (16).

8. The electric wheelchair battery mounting structure according to claim 1, characterized in that: The limiting member (7) is spherical, and the shape of the limiting groove (8) is adapted to the spherical shape of the limiting member (7) protruding from the positioning post (5).

9. An electric wheelchair battery mounting structure according to any one of claims 1 to 8, characterized in that: The two opposite side walls of the snap-fit ​​groove (4) are each arranged with several snap-fit ​​blocks (18) along their own length direction. Both sides of the fixing seat (3) are provided with snap-fit ​​strips (19) for the two rows of snap-fit ​​blocks (18) to slide and snap-fit. The snap-fit ​​strips (19) are provided with slots (20) for the snap-fit ​​blocks (18) to enter the back of the snap-fit ​​strips (19) or to detach from the snap-fit ​​strips (19).

10. An electric wheelchair battery mounting structure according to any one of claims 1 to 8, characterized in that: The fixed base (3) is provided with a power outlet (21) that is electrically connected to the electric wheelchair body (2), and the battery body (1) is provided with a power supply outlet (22). When the snap-fit ​​groove (4) slides and snaps into the fixed base (3) and the positioning post (5) aligns with the positioning groove (6), the power supply outlet (22) aligns with the power outlet (21) so that the battery body (1) and the electric wheelchair body (2) are electrically connected.

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