Battery mounting structure of electric wheelchair

Abstract

The invention relates to the technical field of medical instruments, and discloses an electric wheelchair battery mounting structure, the back of a battery body is provided with a clamping groove slidably clamped to a fixed seat, the bottom of the clamping groove is provided with a positioning column, the fixed seat is provided with a positioning groove for slidably clamping the positioning column, and the side surface of the positioning column is telescopically provided with a limiting piece; 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] The present invention relates to the technical field of medical devices, and particularly to a battery installation structure for an electric wheelchair. Background Art

[0002] An electric wheelchair is based on an ordinary wheelchair, with a motor, an electric control, a battery, and an electric steering device added, enabling a user to control the forward, backward, and turning of the electric wheelchair through a rocker. Compared with the operation of a traditional manually pushed wheel, it is more labor-saving and convenient, greatly improving the user experience. For example, the utility model patent with the publication number CN213607563U discloses a similar electric wheelchair.

[0003] For the above-mentioned electric wheelchair, its battery is fixedly installed on the electric wheelchair body, which results in the inability to continue using the wheelchair during charging, and the battery life of the wheelchair is also limited by the limited battery capacity. At the same time, the fixed installation structure also makes the replacement of the battery in the later stage troublesome, so there is still room for improvement. Summary of the Invention

[0004] Aiming at the shortcomings of the prior art, the present invention provides a battery installation structure for an electric wheelchair, which can complete the rapid replacement of the battery on the electric wheelchair, thereby improving the use efficiency and convenience of the electric wheelchair.

[0005] To solve the above technical problems, the present invention is solved by the following technical solutions:

[0006] A battery installation structure for an electric wheelchair includes a battery body and a fixed seat arranged on the electric wheelchair body. A clamping groove for slidingly clamping with the fixed seat is formed on the back of the battery body. A positioning post is arranged at the bottom of the clamping groove, and a positioning groove for slidingly clamping the positioning post is formed on the fixed seat. A limiting member is telescopically arranged on the side of the positioning post, and a limiting groove for clamping the limiting member is formed on the side of the positioning groove to prevent the positioning post from moving along the sliding direction of the clamping groove and the fixed seat. A locking member is arranged on the positioning post to keep the limiting member in an extended state at a first extreme position and to provide a contraction space for the limiting member at a second extreme position. A locking mechanism for making the locking member tend to maintain the first extreme position and an unlocking mechanism for responding to an external trigger to move the locking member to the second extreme position are also arranged on the positioning post.

[0007] With the above scheme, the sliding clamping fit between the clamping groove and the fixed seat and the clamping fit between the limiting member and the limiting groove can limit the position of the battery body in two perpendicular directions at the same time, thereby ensuring the installation stability of the electromagnetic body. The locking mechanism and the unlocking mechanism can respectively complete the rapid locking and unlocking of the battery body, thereby improving the disassembly and assembly efficiency and convenience of the battery body. In this way, the detachable design of the battery body can realize the alternate use of the battery, thereby improving the battery life of the electric wheelchair and reducing the difficulty of later maintenance.

[0008] Preferably, the locking member is slidably disposed within 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 contracts to the first limit position, the outer wall of the locking member abuts against the limiting member to drive the limiting member to protrude; when the locking member extends to the second limit position, the avoidance groove moves to the position where the limiting member is located to provide a contraction space for the limiting member.

[0009] With the above solution, the cooperation between the locking member and the avoidance groove can complete the rapid switching of the telescopic state of the limiting member, further improving the operation efficiency and convenience.

[0010] Preferably, the locking mechanism is a guiding spring assembly connected to the locking member to provide an elastic pulling force for the locking member to contract.

[0011] Preferably, the guiding spring assembly includes a guiding sleeve disposed within the battery body, a guiding rod slidably passing through the guiding sleeve and connected to the tail end of the locking member, and an elastic member disposed within the guiding sleeve to give the guiding rod a tendency to retract.

[0012] With the above solution, the locking mechanism can provide a stable and directional elastic pulling force for the locking member, making the movement of the locking member more accurate and efficient.

[0013] Preferably, the unlocking mechanism is a pressing member disposed at the end of the guiding rod away from the locking member, and the pressing member is exposed on the side of the battery body away from the engaging groove.

[0014] With the above solution, the pressing member is convenient to operate, and it can quickly unlock the battery body and realize the one-handed disassembly of the battery.

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

[0016] With the above solution, the compression spring has a simple structure, is easy to install, has a low cost, and can provide a stable and lasting elastic supporting force, thus ensuring the elastic force of the guiding spring assembly.

[0017] Preferably, a through hole for the pressing member to telescopically move is provided on the side of the battery body away from the engaging groove, and an anti-disengagement member for preventing the pressing member from disengaging from the through hole is provided on the outer side of the pressing member.

[0018] With the above solution, the anti-disengagement member can effectively prevent the pressing member from disengaging from the battery body, thereby preventing it from being lost, which is 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] With the above solution, the spherical limiting member is not only smoother during telescoping, but also the arc surface when it protrudes can play a guiding role, so that when the locking member is in the second extreme position, the limiting member can automatically contract as the battery body moves on the fixing seat, further improving the disassembly and assembly efficiency of the battery body.

[0021] Preferably, a plurality of engaging blocks are arranged along the length direction of two opposite side walls in the engaging groove, and engaging strips for the two rows of engaging blocks to slide and engage are respectively arranged on both sides of the fixing seat. Slots are formed on the engaging strips for the engaging blocks to enter the rear of the engaging strips or disengage from the engaging strips.

[0022] With the above solution, the engaging groove can be engaged with the fixing seat along the sliding direction perpendicular to itself, thereby shortening the sliding and engaging stroke of the engaging groove, and further improving the operation efficiency and convenience.

[0023] Preferably, a power-taking port electrically connected to the electric wheelchair body is arranged on the fixing seat, and a power supply port is arranged on the battery body. When the engaging groove slides and engages with the fixing seat and the positioning post is docked with the positioning groove, the power supply port is docked with the power-taking port to complete the electrical connection between the battery body and the electric wheelchair body.

[0024] With the above solution, when the engaging groove on the battery body is docked with the fixing seat, the battery body can automatically complete the electrical connection with the electric wheelchair body, and the cooperation between the engaging groove and the fixing seat can play a guiding role, enabling the power supply port to be accurately docked with the power-taking port, further increasing the operation efficiency and convenience.

[0025] Due to the adoption of the above technical solutions, the present invention has remarkable technical effects: the sliding and engaging cooperation between the engaging groove and the fixing seat and the engaging cooperation between the limiting member and the limiting groove can limit the position of the battery body in two perpendicular directions at the same time, thereby ensuring the installation stability of the electromagnetic body. The locking mechanism and the unlocking mechanism can respectively complete the quick locking and unlocking of the battery body, thereby improving the disassembly and assembly efficiency and convenience of the battery body. In this way, the detachable design of the battery body can realize the alternating use of the battery, thereby improving the endurance of the electric wheelchair and reducing the difficulty of later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the structural schematic diagram of this embodiment Figure 1 ;

[0027] Figure 2 is Figure 1 the enlarged schematic diagram of part A shown in

[0028] Figure 3 is the structural schematic diagram of this embodiment Figure 2 ;

[0029] Figure 4 is Figure 3 an enlarged schematic view of part B shown;

[0030] Figure 5 is the structural schematic of this embodiment Figure 3 ;

[0031] Figure 6 is Figure 5 an enlarged schematic view of part C shown;

[0032] Figure 7 is the structural schematic of the locking member in the first extreme position in this embodiment;

[0033] Figure 8 is Figure 7 an enlarged schematic view of part D shown;

[0034] Figure 9 is the structural schematic of the locking member in the second extreme position in this embodiment;

[0035] Figure 10 is Figure 9 an enlarged schematic view of part E shown;

[0036] Figure 11 is the structural schematic of this embodiment Figure 4 ;

[0037] Figure 12 is the circuit schematic of this embodiment.

[0038] The names of the parts referred to by the respective numerical labels in the above drawings are as follows: 1. Battery body; 2. Electric wheelchair body; 3. Fixed seat; 4. Clamping groove; 5. Positioning post; 6. Positioning groove; 7. Limiting member; 8. Limiting groove; 9. Locking member; 10. Avoidance groove; 12. Guide sleeve; 13. Guide rod; 14. Elastic member; 15. Pressing member; 16. Perforation; 17. Anti-disengagement member; 18. Clamping block; 19. Clamping strip; 20. Slotted opening; 21. Power taking port; 22. Power supply port; 23. Mounting seat; 24. Clamping interval; 25. Telescopic groove; 26. First sliding channel; 27. Second sliding channel; 28. Mounting table; 29. Mounting groove; 30. Power control module; 31. Electric core; 32. Guiding inclined surface; 33. Motor; 34. Screw. Detailed implementation manners

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

[0040] As Figures 1 to 12As shown in the figure, a battery installation structure for an electric wheelchair disclosed in this embodiment includes a battery body 1 and a fixing seat 3 provided on the electric wheelchair body 2. The fixing seat 3 is in the shape of a vertical long strip, and rear-mounted mounting seats 23 are integrally connected to both ends thereof. 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 to facilitate the docking of the battery body 1. A clamping groove 4 for slidingly clamping to the fixing seat 3 is longitudinally formed on the back of the battery body 1. Specifically, two clamping blocks 18 are arranged along the length direction of the two opposite side walls in the clamping groove 4, and a clamping interval 24 is maintained between the clamping blocks 18 and the bottom of the clamping groove 4. Clamping strips 19 for slidingly clamping the two rows of clamping blocks 18 are respectively arranged on both sides of the fixing seat 3, and a slot 20 for the clamping blocks 18 to enter the rear of the clamping strip 19 or disengage from the clamping strip 19 is formed on the clamping strip 19.

[0041] In order to lock or unlock the battery body 1, a positioning column 5 is vertically fixed to the bottom of the clamping groove 4 at its upper end position. A positioning groove 6 for horizontally inserting the positioning column 5 and then slidingly clamping is formed on the fixing seat 3. The positioning groove 6 is in the shape of a vertical long waist, and its width is equal to or slightly larger than the width of the positioning column 5 to facilitate the insertion and cooperation of the positioning column 5. Limiting members 7 that can be horizontally telescoped are arranged on both sides of the positioning column 5. The limiting members 7 are spherical. A telescopic groove 25 for the limiting members 7 to slide and telescope is horizontally formed on the side wall of the positioning column 5. The outer opening of the telescopic groove 25 is smaller than the spherical diameter of the limiting member 7, so as to prevent the limiting member 7 from disengaging from the telescopic groove 25. Limiting grooves 8 for clamping the two limiting members 7 are respectively formed on both sides of the positioning groove 6 to prevent the positioning column 5 from moving along the sliding direction of the clamping groove 4 and the fixing seat 3. The shape of the limiting groove 8 is adapted to the spherical shape of the limiting member 7 protruding from the positioning column 5, that is, it is an inward concave spherical arc surface. A locking member 9 is arranged on the positioning column 5 to keep the limiting member 7 in the extended state at the first extreme position and to have a contraction space for the limiting member 7 at the second extreme position. A locking mechanism for making the locking member 9 tend to maintain the first extreme position and an unlocking mechanism for responding to an external trigger to make the locking member 9 move to the second extreme position are also arranged on the positioning column 5.

[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 column 5 for the locking member 9 to slide through along the length direction of the positioning column 5, and the first sliding channel 26 is connected to the telescopic slot 25. An avoidance slot 10 is provided on the outer side of the locking member 9 and at the tail end thereof. When the locking member 9 is retracted to the first extreme 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 extreme position, the avoidance slot 10 moves to the position of the limiting member 7 to provide a shrinking space for the limiting member 7. When the limiting member 7 is retracted into the avoidance slot 10, the limiting member 7 will neither be separated from the corresponding telescopic slot 25 nor protrude from the outer wall of the positioning column 5, so as to facilitate the longitudinal movement of the positioning column 5 in the positioning slot 6, and at the same time, the positioning column 5 can smoothly enter and exit the positioning slot 6. In order to facilitate the locking member 9 to open the limiting member 7, a guiding inclined surface 32 is provided at the transition between the locking member 9 and the avoidance groove 10, so as to prevent the limiting member 7 from getting stuck when being opened.

[0043] In order to realize 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 to the locking member 9 for contraction. Specifically, the guide spring assembly includes a guide sleeve 12 arranged in the battery body 1, a guide rod 13 slidably penetrated in the guide sleeve 12 and fixedly connected to the rear end of the locking member 9, and an elastic member 14 arranged in the guide sleeve 12 to make the guide rod 13 have a backward tendency. Among them, the guide sleeve 12 is horizontally arranged in the battery body 1, and is integrally connected to the side wall of the clamping groove 4, and the second sliding channel 27 in the guide sleeve 12 for the guide rod 13 to slide through is connected to the first sliding channel 26.

[0044] In order to realize the unlocking function of the unlocking mechanism, the unlocking mechanism 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 clamping groove 4, so as to facilitate 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 presses against the side wall where the bottom of the clamping groove 4 is located, and the other end presses against the side of the pressing member 15 close to the clamping groove 4. A through hole 16 for the pressing member 15 to extend and retract is provided on the side of the battery body 1 away from the clamping groove 4, and an anti-slip member 17 is provided on the outside of the pressing member 15 to prevent the pressing member 15 from escaping from the through hole 16. The anti-slip member 17 is annular, and is integrally arranged on the outside of the pressing member 15 and has an outer diameter greater than the aperture of the through hole 16, thereby playing an anti-slip effect.

[0045] To achieve the automatic electrical connection between the battery and the electric wheelchair, an installation platform 28 is fixedly arranged at the front of the fixed seat 3 and at its lower end position. An installation groove 29 for the longitudinal insertion of the installation platform 28 is provided at the bottom of the battery body 1. The cooperation between the installation platform 28 and the installation groove 29 can longitudinally pre-position the battery body 1, making the installation of the battery body 1 more accurate and efficient. A power take-off port 21 electrically connected to the built-in power control module 30 of the electric wheelchair body 2 is arranged on the upper surface of the installation platform 28, and a power supply port 22 electrically connected to the built-in battery cell 31 of the battery body 1 is arranged on the lower side wall of the installation groove 29. The power take-off port 21 and the power supply port 22 are preferably a pair of mutually mating power plug components. When the clamping groove 4 slides and clamps on the fixed seat 3 and the positioning post 5 is docked with the positioning groove 6, the power supply port 22 is docked with the power take-off port 21, so that the battery body 1 and the electric wheelchair body 2 are electrically connected, 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 press down the pressing member 15 against the elastic force of the guiding spring assembly to drive the locking member 9 to extend to the second limit position, thereby forming a space for the limiting member 7 to contract. Then, the clamping blocks 18 on both sides of the clamping groove 4 on the battery body 1 are horizontally pushed into the clamping strips 19 on both sides of the fixed seat 3 through the slotted openings 20, so that the clamping strips 19 horizontally enter the clamping interval 24. At the same time, the positioning post 5 on the battery body 1 is horizontally inserted into the positioning groove 6 on the fixed seat 3, enabling the limiting member 7 to automatically retract under the extrusion of the side of the positioning groove 6. After the positioning post 5 is completely inserted, release the pressing member 15, and then press down the battery body 1 to push the clamping interval 24 into the clamping strips 19 on both sides of the fixed seat 3, thus completing the sliding clamping of the clamping groove 4 and the fixed seat 3. When the installation groove 29 is docked with the installation platform 28, the power supply port 22 on the battery body 1 is docked with the power take-off port 21 on the installation platform 28, thereby completing the electrical connection between the battery body 1 and the electric wheelchair body 2. Meanwhile, 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 guiding spring assembly, thereby expanding the two-sided limiting members 7 by means of its outer side wall, enabling the limiting members 7 to extend out of the positioning post 5 and be clamped in the corresponding limiting grooves 8, thus 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, and then push the battery body 1 upward so that the engaging blocks 18 on both sides of the engaging groove 4 rise to a position opposite to the slot 20. Then, horizontally push the battery body 1 in a direction away from the fixing base 3 so that the engaging blocks 18 disengage from the engaging strip 19 through the slot 20, and the positioning posts 5 disengage from the positioning grooves 6, thereby completing the disassembly of the battery body 1.

Claims

1. An electric wheelchair battery installation structure, characterized in that: The invention comprises a battery body (1) and a fixing seat (3) arranged on an electric wheelchair body (2); a clamping groove (4) for slidingly clamping the fixing seat (3) is provided on the back of the battery body (1); a positioning column (5) is provided at the bottom of the clamping groove (4); a positioning groove (6) for slidingly clamping the positioning column (5) is provided on the fixing seat (3); a limiting member (7) is telescopically arranged on the side of the positioning column (5); a limiting groove (8) for clamping the limiting member (7) is provided on the side of the positioning groove (6); ) is used to prevent the positioning column (5) from moving along the sliding direction of the clamping groove (4) and the fixing seat (3); the positioning column (5) is provided with a locking member (9) which allows the limiting member (7) to maintain an extended state at a first extreme position and allows the limiting member (7) to have a contraction space at a second extreme position; the positioning column (5) is also provided with a locking mechanism which allows the locking member (9) to have a tendency to maintain the first extreme position and an unlocking mechanism which responds to an external trigger to allow the locking member (9) to move to the second extreme position.

2. The electric wheelchair battery installation structure according to claim 1, characterized in that: The locking member (9) is slidably arranged in the positioning column (5), and an avoidance groove (10) is arranged on the outer side of the locking member (9) and at a position close to the tail end; when the locking member (9) is retracted to a first extreme 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) is extended to a second extreme position, the avoidance groove (10) moves to the position where the limiting member (7) is located to provide a retracting space for the limiting member (7).

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

4. The battery installation structure for an electric wheelchair according to claim 3, characterized in that: The guide spring assembly comprises a guide sleeve (12) arranged in the battery body (1), a guide rod (13) slidably inserted into the guide sleeve (12) and connected to the rear end of the locking member (9), and an elastic member (14) arranged in the guide sleeve (12) so that the guide rod (13) has a backward tendency.

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

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

7. The battery installation structure for an electric wheelchair according to claim 5, characterized in that: A through hole (16) for the pressing piece (15) to extend and retract is provided on one side of the battery body (1) away from the clamping groove (4), and an anti-dropping piece (17) is provided on the outer side of the pressing piece (15) to prevent the pressing piece (15) from escaping from the through hole (16).

8. The battery installation structure for an electric wheelchair 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 column (5).

9. An electric wheelchair battery installation structure according to any one of claims 1 to 8, characterized in that: A plurality of clamping blocks (18) are arranged on two opposite side walls in the clamping groove (4) along the length direction thereof, and clamping strips (19) for slidingly clamping the two rows of clamping blocks (18) are arranged on both sides of the fixing seat (3), and slots (20) are provided on the clamping strips (19) for the clamping blocks (18) to enter the rear of the clamping strips (19) or to be separated from the clamping strips (19).

10. An electric wheelchair battery installation structure according to any one of claims 1 to 8, characterized in that: The fixing seat (3) is provided with a power supply port (21) electrically connected to the electric wheelchair body (2), and the battery body (1) is provided with a power supply port (22). When the clamping groove (4) is slidably clamped to the fixing seat (3) and the positioning column (5) is docked with the positioning groove (6), the power supply port (22) is docked with the power supply port (21), so that the battery body (1) and the electric wheelchair body (2) are electrically connected.

Images