A quick-release battery mechanism and an electric wheelchair

Abstract

This invention provides a quick-release battery mechanism, including a battery assembly, a mounting base, a locking mechanism, and a switching mechanism. The mounting base has a battery compartment suitable for accommodating the battery assembly. The locking mechanism includes a locking groove, a locking pin, a locking spring, and an operating part. The locking spring is adapted to drive the locking pin into the locking groove, and the locking mechanism is in a locked state. The operating part is adapted to drive the locking pin out of the locking groove, and the locking mechanism switches from the locked state to the unlocked state. The switching mechanism is adapted to limit the operating part, so that the locking pin remains out of the locking groove, that is, the locking mechanism remains in the unlocked state. One of the battery assembly and the mounting base includes the locking groove, and the other of the battery assembly and the mounting base includes the locking pin and the operating part. This invention, by setting up a locking mechanism and a switching mechanism, ensures the stable installation of the battery assembly on the mounting base, while allowing users to quickly and easily complete the installation and removal of the battery.

Description

Technical Field

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

[0002] In the field of electric equipment, such as electric wheelchairs, batteries are crucial power supply components, and the ease of installation and removal is vital for the use and maintenance of these devices. Traditional battery installation methods often present numerous inconveniences. For example, when batteries need to be replaced or recharged, the disassembly process is complex, time-consuming, and labor-intensive, which not only affects the user experience but also increases the difficulty of device maintenance. Furthermore, traditional battery locking mechanisms may not be robust enough; during device operation, the battery casing may loosen due to vibrations, affecting normal operation and potentially causing the battery to detach, leading to safety issues. Moreover, some existing battery installation structures may lack effective unlocking and locking mechanisms, making it difficult to maintain the required unlocked or locked state in specific operating scenarios, further reducing ease of use and reliability. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a quick-release battery mechanism and an electric wheelchair to meet the needs of users.

[0004] To achieve the above objectives, this utility model provides a quick-release battery mechanism, including...

[0005] Battery assembly;

[0006] Mounting base, which is formed with a battery compartment suitable for accommodating the battery assembly;

[0007] A locking mechanism includes a locking groove, a locking pin, a locking spring, and an operating part. The locking spring is adapted to drive the locking pin into the locking groove, and the locking mechanism is in a locked state. The operating part is adapted to drive the locking pin out of the locking groove, and the locking mechanism is switched from the locked state to the unlocked state.

[0008] A switching mechanism is adapted to limit the operation part, so that the locking pin remains out of the locking groove, that is, the locking mechanism remains in the unlocked state.

[0009] One of the battery assembly and the mounting base includes the locking groove, and the other of the battery assembly and the mounting base includes the locking pin and the operating part.

[0010] Preferably, the operating part includes a first active inclined surface and a first stop surface, and the locking pin includes a first driven inclined surface and a first mating surface. The first stop surface is disposed perpendicular to the locking pin, wherein: in the locked state, the first active inclined surface abuts against the first driven inclined surface; in the unlocked state, the first stop surface abuts against the first mating surface.

[0011] The operating part moves in a direction perpendicular to the locking pin, and the first active inclined surface and the first driven inclined surface slide together, which is suitable for driving the locking pin out of the locking groove and for guiding the first stop surface to abut against the first mating surface.

[0012] Preferably, the locking pin includes:

[0013] A pin portion adapted to be inserted into the locking groove;

[0014] The driving part includes a first driven inclined surface and a first mating surface, and the locking spring directly abuts against the driving part;

[0015] A first telescopic space is provided for the reciprocating telescopic movement of the operating part, and the driving part participates in enclosing and forming the first telescopic space, or the first telescopic space is connected to the driving part.

[0016] Preferably, the operating part includes a limiting groove, and the switching mechanism includes a limiting pin and a limiting spring. The limiting spring is adapted to drive the limiting pin to engage in the limiting groove, and the limiting pin and the operating part form a limiting position along their direction of movement.

[0017] Preferably, the switching mechanism further includes a switching part and a reset spring adapted to support the switching part. The switching part is adapted to drive the limiting pin to disengage from the operating part during the insertion of the battery assembly, thereby allowing the locking mechanism to switch from an unlocked state to a locked state.

[0018] Preferably, the operating part includes a second active inclined surface and a second stop surface, and the limiting pin includes a second driven inclined surface and a second mating surface. The second stop surface is arranged parallel to the locking pin, wherein: in the locked state, the second active inclined surface abuts against the second driven inclined surface; in the unlocked state, the second stop surface abuts against the second mating surface.

[0019] The operating part moves in a direction perpendicular to the locking pin, and the second active inclined surface and the second driven inclined surface slide together to guide the limiting groove and the limiting pin to align and engage.

[0020] Preferably, the locking mechanism includes a quick-release seat disposed on the mounting base, and the limiting pin includes...

[0021] The limiting part includes the second driven inclined surface and the second mating surface, and the limiting spring directly abuts against the limiting part;

[0022] A trigger portion adapted to extend from the quick-release seat, and a switching portion adapted to drive the limiting portion via the trigger portion;

[0023] The second telescopic space is adapted to allow the operating part to reciprocate and extend, and the limiting part participates in enclosing and forming the second telescopic space, or the second telescopic space is connected to the limiting part.

[0024] Preferably, the switching part includes a groove and a third stop surface, the limiting spring is adapted to drive the limiting part to reset to the locked state, and the trigger part extends into the groove, the groove includes a third active inclined surface, and the trigger part includes a third driven inclined surface.

[0025] When the battery assembly is removed, the triggering part slides in sequence with the third active inclined surface and the third stop surface; when the battery assembly is installed, the switching part slides in conjunction with the third driven inclined surface to drive the limiting part out of the limiting groove to release the lock of the unlocked state.

[0026] Preferably, the quick-release seat includes a first sliding area adapted to receive the locking pin and the locking spring, a second sliding area adapted to receive the limiting pin and the limiting spring, and an operating area adapted to receive the operating part, wherein the locking pin is arranged parallel to the limiting pin.

[0027] Preferably, the battery assembly includes a battery casing and a battery cell housed in the battery casing. The battery casing is provided with the locking groove and the switching part facing the quick-release seat, and the return spring abuts against the battery casing and the third stop surface.

[0028] It should be noted that during the process of removing the battery assembly, the battery case always abuts against the plug-in part to keep it contained in the first sliding area. Even if the trigger part is squeezed by the switching part and the limiting pin is separated from the limiting groove, the locking spring cannot drive the operating part to reset through the first active inclined surface and the first driven inclined surface.

[0029] Preferably, the battery casing includes two gripping areas that protrude outside the battery compartment, making it convenient for users to grip and install / remove the battery assembly.

[0030] Preferably, one of the battery compartment and the battery assembly is provided with a connector, and the other of the battery compartment and the battery assembly is provided with a socket adapted to mate with the connector, and the connector and the socket are electrically connected.

[0031] An electric wheelchair includes a frame and a drive assembly mounted on the frame, the drive assembly including a motor, a quick-release battery mechanism as described above, a set of front wheels and a set of rear wheels, the quick-release battery mechanism being adapted to power the motor.

[0032] Preferably, the frame is adapted to support the seat cushion assembly and the backrest assembly. The frame includes a set of parallel first longitudinal beams and a set of parallel second longitudinal beams. The first and second longitudinal beams are pivotally connected to the backrest assembly. The first longitudinal beam is adapted to connect to the front wheel. The second longitudinal beam is adapted to connect to the rear wheel. The quick-release battery mechanism is disposed between the two second longitudinal beams.

[0033] The beneficial effects of this utility model are:

[0034] First, a locking mechanism ensures the secure installation of the battery assembly on the mounting base. In the locked state, the locking pin inserts into the locking groove, and together with the locking spring, it effectively resists external forces such as vibration during equipment operation, preventing the battery from loosening or falling off, thus improving the safety and stability of equipment operation.

[0035] Second, the locking pin is driven out of the locking groove by the operating part to achieve unlocking. The operating part and the locking pin are engaged by a specific inclined surface and a stop surface. The switching between locking and unlocking can be achieved by moving in a direction perpendicular to the locking pin, which makes the installation and removal of batteries simple and quick, and greatly improves the convenience of use for users.

[0036] Third, the combination of the limit pin and the limit spring allows the operating part to remain in the unlocked state, thereby keeping the locking mechanism in the unlocked state for easy battery removal. Meanwhile, the design of the switching part and the return spring allows for easy release of the lock from the unlocked state when the battery is inserted, restoring the locking mechanism to the locked state and ensuring a secure battery installation. This reliable mechanism further enhances the performance and reliability of the quick-release battery mechanism. Attached Figure Description

[0037] Figure 1 is a structural schematic diagram of a quick-release battery mechanism provided by this utility model.

[0038] Figure 2 is an exploded view of a quick-release battery mechanism provided by this utility model.

[0039] Figure 3 is a cross-sectional schematic diagram of a quick-release battery mechanism provided by this utility model.

[0040] Figure 4 is a cross-sectional schematic diagram of a quick-release battery mechanism provided by this utility model in an explosion state.

[0041] Figure 5 is a magnified view of region A in Figure 4.

[0042] Figure 6 is a structural schematic diagram of an electric wheelchair provided by this utility model.

[0043] In the diagram: 1. Battery assembly; 11. Battery casing; 111. Grip area; 12. Battery cell.

[0044] 2. Mounting base; 21. Battery compartment; 211. Connector.

[0045] 31. Quick-release seat; 311. First sliding area; 312. Second sliding area; 313. Limiting area; 32. Locking groove; 33. Locking pin; 331. Insert pin part; 332. Drive part; 3321. First driven inclined surface; 3322. First mating surface; 34. Locking spring; 35. Operating part; 351. First driving inclined surface; 352. First stop surface; 353. Second driving inclined surface; 354. Limiting groove; 3541. Second stop surface; 355. Limiting part.

[0046] 41. Limiting pin; 411. Limiting part; 4111. Second driven inclined surface; 4112. Second mating surface; 412. Triggering part; 4121. Third driven inclined surface; 42. Limiting spring; 43. Switching part; 431. Groove; 4311. Third driving inclined surface; 432. Third stop surface; 44. Return spring.

[0047] 51. First longitudinal beam; 52. Second longitudinal beam; 53. Front wheel; 54. Rear wheel; 55. Seat cushion assembly; 56. Backrest assembly. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0049] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the mechanisms and / or processing steps closely related to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0050] Additionally, it should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] Example 1

[0052] like Figure 1-5The quick-release battery mechanism includes a battery assembly 1, a mounting base 2, a locking mechanism, and a switching mechanism. The mounting base 2 has a battery compartment 21 adapted to accommodate the battery assembly 1. The battery assembly 1 includes a battery case 11 and a battery cell 12 accommodated in the battery case 11. The locking mechanism includes a quick-release seat 31, a locking groove 32, a locking pin 33, a locking spring 34, and an operating part 35. The switching mechanism includes a limiting pin 41, a limiting spring 42, a switching part 43, and a return spring 44. The return spring 44 is adapted to support the switching part 43. The quick-release seat 31 is disposed on the mounting base 2. The locking mechanism includes the quick-release seat 31 disposed on the mounting base 2. The quick-release seat 31 includes a first sliding area 311 adapted to accommodate the locking pin 33 and the locking spring 34, a second sliding area 312 adapted to accommodate the limiting pin 41 and the locking spring 34, and an operating area adapted to accommodate the operating part 35. The locking pin 33 is disposed parallel to the limiting pin 41. Both the first sliding area 311 and the second sliding area 312 are connected to the battery compartment 21, and the operating area is connected to the external environment for user operation. The battery housing 11 is provided with a locking groove 32 and a switching part 43 facing the quick-release seat 31, and the return spring 44 abuts between the battery housing 11 and the switching part 43.

[0053] The operating part 35 is adapted to drive the locking pin 33 out of the locking groove 32, thereby switching the locking mechanism from the locked state to the unlocked state. The operating part 35 includes a limiting groove 354, and a limiting spring 42 is adapted to drive the limiting pin 41 into the limiting groove 354. The limiting pin 41 and the operating part 35 form a limit along their direction of movement, so that the locking pin 33 remains out of the locking groove 32, that is, the locking mechanism remains in the unlocked state, at which time the user can remove the battery assembly 1. The switching part 43 is adapted to drive the limiting pin 41 to disengage from the operating part 35 during the insertion of the battery assembly 1, and the locking spring 34 is adapted to drive the locking pin 33 into the locking groove 32, thereby allowing the locking mechanism to switch from the unlocked state to the locked state.

[0054] In this embodiment, the operating part 35 includes a first active inclined surface 351, a first stop surface 352, a second active inclined surface 353, and a second stop surface 3541. The first stop surface 352 is disposed perpendicular to the locking pin 33, and the second stop surface 3541 is disposed parallel to the locking pin 33. The operating part 35 moves in a direction perpendicular to the locking pin 33. The locking pin 33 includes a pin portion 331 adapted to be inserted into the locking groove 32, a driving part 332, and a first telescopic space adapted for the reciprocating telescopic movement of the operating part 35. The driving part 332 includes a first driven inclined surface 3321 and a first mating surface 3322. The locking spring 34 abuts between the driving part 332 and the first sliding area 311. The driving part 332 participates in enclosing and forming the first telescopic space. The limiting pin 41 includes a limiting part 411, a trigger part 412 adapted to extend from the quick-release seat 31, and a second telescopic space adapted for reciprocating telescopic movement of the operating part 35. The limiting part 411 participates in enclosing and forming the second telescopic space. The limiting spring 42 abuts against the limiting part 411 and the second sliding area 312. The switching part 43 includes a groove 431 and a third stop surface 432. The groove 431 includes a third active inclined surface 4311, and the trigger part 412 includes a third driven inclined surface 4121.

[0055] In this embodiment, in the locked state, the first active inclined surface 351 abuts against the first driven inclined surface 3321, and the second active inclined surface 353 abuts against the second driven inclined surface 4111. When the battery assembly 1 needs to be removed, the operating part 35 is pressed down. On the one hand, the first active inclined surface 351 and the first driven inclined surface 3321 slide to drive the locking pin 33 out of the locking groove 32 and guide the first stop surface 352 to abut against the first mating surface 3322. On the other hand, the second active inclined surface 353 and the second driven inclined surface 4111 slide to guide the limiting groove 354 to align with the limiting pin 41. The limiting spring 42 drives the limiting part 411 to insert into the limiting groove 354, and the locking mechanism switches from the locked state to the unlocked state. At this time, the first stop surface 352 abuts against the first mating surface 3322, the locking spring 34 is compressed and contracts, and the second stop surface 3541 abuts against the second mating surface 4112. During the removal of battery assembly 1, trigger part 412 slides in sequence with third active inclined surface 4311 and third stop surface 432. When battery assembly 1 is installed, switching part 43 slides in conjunction with third driven inclined surface 4121 to drive limiting part 411 out of limiting groove 354 to release the lock of the unlocked state. Locking spring 34 inserts into locking groove 32 through first active inclined surface 351 and first driven inclined surface 3321 pin part 331, and simultaneously drives operating part 35 to reset. First active inclined surface 351 abuts against first driven inclined surface 3321, limiting spring 42 drives second driven inclined surface 4111 of limiting part 411 to abut against second active inclined surface 353, and trigger part 412 then extends into groove 431.

[0056] It should be noted that during the process of removing the battery assembly 1, the battery case 11 always abuts against the plug-in part to keep it contained in the first sliding area 311. Even if the trigger part 412 is pushed apart from the limit pin 41 by the pressure of the switching part 43, the locking spring 34 cannot drive the operating part 35 to reset through the first active inclined surface 351 and the first driven inclined surface 3321.

[0057] Furthermore, the control unit 35 includes a travel limit block 355, and the quick-release seat 31 includes a travel limit area 313. The travel limit block 355 performs limited reciprocating motion within the travel limit area, which can limit the movement trajectory and range of the control unit 35.

[0058] In this embodiment, the battery casing 11 includes two gripping areas 111, which protrude outside the battery compartment 21, facilitating the user's gripping and disassembly of the battery assembly 1. The battery compartment 21 is provided with a connector 211, and the battery assembly is provided with a socket adapted to mate with the connector 211, and the connector 211 and the socket are electrically connected.

[0059] Example 2

[0060] like Figure 6 The electric wheelchair includes a frame and a drive assembly mounted on the frame. The drive assembly includes a motor, a quick-release battery mechanism as described above, a set of front wheels 53 and a set of rear wheels 54. The quick-release battery mechanism is adapted to power the motor.

[0061] In this embodiment, the frame is adapted to support the seat cushion assembly 55 and the backrest assembly 56. The frame includes a set of parallel first longitudinal beams 51 and a set of parallel second longitudinal beams 52. The first longitudinal beams 51 and the second longitudinal beams 52 are pivotally connected to the backrest assembly 56. The first longitudinal beam is adapted to connect to the front wheel 53. The second longitudinal beams 52 are adapted to connect to the rear wheel 54. A quick-release battery mechanism is disposed between the two second longitudinal beams 52.

[0062] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model.

Claims

1. A quick-release battery mechanism, characterized in that, include Battery assembly; Mounting base, which is formed with a battery compartment suitable for accommodating the battery assembly; A locking mechanism includes a locking groove, a locking pin, a locking spring, and an operating part. The locking spring is adapted to drive the locking pin into the locking groove, and the locking mechanism is in a locked state. The operating part is adapted to drive the locking pin out of the locking groove, and the locking mechanism is switched from the locked state to the unlocked state. A switching mechanism is adapted to limit the operation part, so that the locking pin remains out of the locking groove, that is, the locking mechanism remains in the unlocked state. One of the battery assembly and the mounting base includes the locking groove, and the other of the battery assembly and the mounting base includes the locking pin and the operating part.

2. The quick-release battery mechanism according to claim 1, characterized in that, The operating part includes a first active inclined surface and a first stop surface, and the locking pin includes a first driven inclined surface and a first mating surface. The first stop surface is perpendicular to the locking pin, wherein: in the locked state, the first active inclined surface abuts against the first driven inclined surface; in the unlocked state, the first stop surface abuts against the first mating surface. The operating part moves in a direction perpendicular to the locking pin, and the first active inclined surface and the first driven inclined surface slide together, which is suitable for driving the locking pin out of the locking groove and for guiding the first stop surface to abut against the first mating surface.

3. The quick-release battery mechanism according to claim 2, characterized in that, The locking pin includes A pin portion adapted to be inserted into the locking groove; The driving part includes a first driven inclined surface and a first mating surface, and the locking spring directly abuts against the driving part; A first telescopic space is provided for the reciprocating telescopic movement of the operating part, and the driving part participates in enclosing and forming the first telescopic space, or the first telescopic space is connected to the driving part.

4. A quick-release battery mechanism according to any one of claims 1-3, characterized in that, The operating part includes a limiting groove, and the switching mechanism includes a limiting pin and a limiting spring. The limiting spring is adapted to drive the limiting pin to engage in the limiting groove, and the limiting pin and the operating part form a limiting position along their direction of movement.

5. A quick-release battery mechanism according to claim 4, characterized in that, The switching mechanism further includes a switching part and a reset spring adapted to support the switching part. The switching part is adapted to drive the limiting pin to disengage from the operating part during the insertion of the battery assembly, thereby allowing the locking mechanism to switch from an unlocked state to a locked state.

6. A quick-release battery mechanism according to claim 5, characterized in that, The operating part includes a second active inclined surface and a second stop surface, and the limiting pin includes a second driven inclined surface and a second mating surface. The second stop surface is arranged parallel to the locking pin, wherein: in the locked state, the second active inclined surface abuts against the second driven inclined surface; in the unlocked state, the second stop surface abuts against the second mating surface. The operating part moves in a direction perpendicular to the locking pin, and the second active inclined surface and the second driven inclined surface slide together to guide the limiting groove and the limiting pin to align and engage.

7. A quick-release battery mechanism according to claim 6, characterized in that, The locking mechanism includes a quick-release seat disposed on the mounting base, and the limiting pin includes... The limiting part includes the second driven inclined surface and the second mating surface, and the limiting spring directly abuts against the limiting part; A trigger portion adapted to extend from the quick-release seat, and a switching portion adapted to drive the limiting portion via the trigger portion; The second telescopic space is adapted to allow the operating part to reciprocate and extend, and the limiting part participates in enclosing and forming the second telescopic space, or the second telescopic space is connected to the limiting part.

8. A quick-release battery mechanism according to claim 7, characterized in that, The switching part includes a groove and a third stop surface. The limiting spring is adapted to drive the limiting part to a locked state, and the trigger part extends into the groove. The groove includes a third active inclined surface, and the trigger part includes a third driven inclined surface, wherein: When the battery assembly is removed, the triggering part slides in sequence with the third active inclined surface and the third stop surface; when the battery assembly is installed, the switching part slides in conjunction with the third driven inclined surface to drive the limiting part out of the limiting groove to release the lock of the unlocked state.

9. A quick-release battery mechanism according to claim 8, characterized in that, The quick-release seat includes a first sliding area adapted to receive the locking pin and the locking spring, a second sliding area adapted to receive the limiting pin and the limiting spring, and an operating area adapted to receive the operating part, wherein the locking pin is arranged parallel to the limiting pin; The battery assembly includes a battery casing and battery cells housed in the battery casing. The battery casing is provided with the locking groove and the switching part facing the quick-release seat. The return spring abuts against the battery casing and the third stop surface.

10. An electric wheelchair, characterized in that, The vehicle includes a frame and a drive assembly mounted on the frame, the drive assembly including a motor, a quick-release battery mechanism as described in any one of claims 1-9, a set of front wheels and a set of rear wheels, the quick-release battery mechanism being adapted to power the motor.

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