Battery quick disassembly and assembly structure for electric wheelchair

Abstract

The utility model aims to provide a battery quick dismounting structure for an electric wheelchair, which comprises a chair frame and a dismounting structure, the dismounting structure comprises a battery box, an insertion block, a clamping block, a push block and a clamping spring, the insertion block is arranged on the chair frame, the clamping block is arranged on the battery box along the vertical direction in a sliding manner, the clamping spring is arranged on the clamping block, and the push block is arranged on the clamping block. The clamping spring pushes the clamping block to extend upwards relative to the battery box to be clamped with the inserting block, the pushing block is arranged on the battery box in a sliding mode in the transverse direction, the pushing block is provided with an inclined face part, the clamping block is provided with a protruding block, and the pushing block slides to be close to the clamping block under external force, so that the protruding block slides downwards along the inclined face part to be away from the inserting block. Therefore, the use efficiency and the emergency capability of the electrically powered wheelchair are improved while the battery disassembly and assembly difficulty is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of wheelchair manufacturing, and in particular to a quick-release battery structure for electric wheelchairs. Background Technology

[0002] Electric wheelchairs, as important medical assistive devices, provide great convenience for people with mobility impairments. The battery, as the core power source of electric wheelchairs, inevitably requires charging, replacement, and maintenance. Currently, electric wheelchair batteries are typically secured to the wheelchair with screws.

[0003] However, existing battery fixing methods for electric wheelchairs have the following shortcomings in practical use: Users must use specialized tools such as screwdrivers to unscrew multiple screws to remove the battery. For elderly users, people with disabilities, and other groups with limited mobility or strength, unscrewing these screws is difficult, making it hard to remove the battery independently and significantly impacting ease of use. Furthermore, the screw removal process is time-consuming, especially when the battery is depleted and urgently needs replacement. This cumbersome process prevents users from quickly providing power to the electric wheelchair, severely reducing its efficiency and emergency response capabilities. Therefore, this application proposes a quick-release battery mounting and dismounting structure for electric wheelchairs. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a quick-release battery structure for electric wheelchairs that can quickly disassemble and install batteries, thereby reducing the difficulty of battery disassembly and improving the efficiency and emergency response capabilities of electric wheelchairs.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A quick-release battery structure for an electric wheelchair includes:

[0007] Chair frame; and

[0008] The disassembly and assembly structure includes a battery box, a plug, a locking block, a push block, and a locking spring. The plug is disposed on the chair frame. The locking block is vertically slidably disposed on the battery box. The locking spring is disposed on the locking block and pushes the locking block upward relative to the battery box to engage with the plug. The push block is horizontally slidably disposed on the battery box and has an inclined surface. The locking block has a protrusion. When the push block is subjected to external force, it slides closer to the locking block, causing the protrusion to slide downward along the inclined surface to move away from the plug.

[0009] Optionally, the battery box has a groove, and the battery box is provided with a stand, the stand being located on the inner bottom wall of the groove, and the locking block sliding on the stand.

[0010] Optionally, a circular groove is provided on one end of the locking block, and the two ends of the locking spring abut against the inner bottom wall of the circular groove and the inner bottom wall of the recess, respectively, and the locking spring pushes the locking block to engage with the insert block.

[0011] Optionally, the insert block is provided with a locking angle, and the locking block is provided with an oblique angle, the locking angle and the oblique angle slidingly abutting against each other.

[0012] Optionally, the insert block has an inner groove, and the locking angle is located on the inner groove.

[0013] Optionally, the battery box is further provided with a sliding groove, which extends inward from one side of the battery box to the groove, and the sliding groove communicates with the groove, and the insert block slides in the sliding groove.

[0014] Optionally, the disassembly and assembly structure further includes a top column and a push spring. The insert block has a top groove, the top column slides in the top groove, and the two ends of the push spring abut against the inner bottom wall of the top groove and the top column, respectively. The push spring pushes the end of the top column away from the top groove to abut against one side wall of the sliding groove.

[0015] Optionally, the cross-sectional area of ​​at least a portion of the insert gradually decreases in the direction away from the chair frame.

[0016] Compared with the prior art, the present invention has at least the following advantages:

[0017] This utility model provides a quick-release battery structure for electric wheelchairs, which allows for rapid disassembly of the battery box by pressing the push block. This reduces the difficulty of battery disassembly and assembly while also improving the efficiency and emergency response capabilities of the electric wheelchair. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a quick-release battery structure for an electric wheelchair according to one embodiment of the present invention.

[0020] Figure 2This is a structural schematic diagram of the installation position of the bridge plate according to one embodiment of the present invention;

[0021] Figure 3 This is an exploded view of the disassembly and assembly structure of one embodiment of the present invention;

[0022] Figure 4 This is a rear exploded view of the disassembly and assembly structure of one embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the battery box according to one embodiment of the present invention;

[0024] Figure 6 This is a structural schematic diagram of the insertion block installation position according to one embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the card block according to one embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the pusher block according to one embodiment of the present invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Quick-release battery assembly / disassembly structure for electric wheelchairs; 10. Chair frame; 12. Bridge plate; 120. Perforation; 20. Assembly / disassembly structure; 21. Battery box; 210. Groove; 211. Stand block; 212. Slide groove; 213. Through hole; 214. Positioning block; 22. Insert block; 220. Corner locking; 221. Top groove; 23. Locking block; 230. Angled angle; 231. Protrusion; 24. Push block; 240. Angled surface; 25. Snap-fit ​​spring; 26. Pressure block; 27. Top column; 28. Push spring. Detailed Implementation

[0029] To facilitate understanding of this utility model, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model.

[0030] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0033] like Figures 1 to 4 As shown, in one embodiment, a quick-release battery structure 1 for an electric wheelchair includes a chair frame 10 and a disassembly / removal structure 20, including a battery box 21, a plug 22, a locking block 23, a push block 24, and a locking spring 25. The plug 22 is disposed on the chair frame 10. The locking block 23 is slidably disposed on the battery box 21 along the vertical direction. The locking spring 25 is disposed on the locking block 23. The locking spring 25 pushes the locking block 23 upward relative to the battery box 21 to engage with the plug 22. The push block 24 is slidably disposed on the battery box 21 along the horizontal direction. The push block 24 has an inclined surface 240. The locking block 23 has a protrusion 231. When the push block 24 is subjected to external force, it slides closer to the locking block 23, causing the protrusion 231 to slide downward along the inclined surface 240 to move away from the plug 22.

[0034] It should be noted that the chair frame 10 includes a frame body and a bridge plate 12. The bridge plate 12 tends to have a U-shaped structure, and both ends of the bridge plate 12 are connected to the frame body. For example, both ends of the bridge plate 12 are connected to both ends of the frame body by screws. One end of the insert block 22 is located on the inwardly recessed side surface of the bridge plate 12. Further, a groove 210 is formed on one end of the battery box 21. The adjacent sides of the groove 210 are connected to the battery and the adjacent two sides, so that the groove 210 has an L-shaped concave structure relative to the battery box 21. Further, a stand block 211 is provided on the battery box 21. For example, the stand block 211 and the battery box 21 are integrally formed. The stand block 211 is located on the inner bottom wall of the groove 210. Specifically, the stand block 211 is positioned in the middle of the inner bottom wall of the groove 210, so that there is a gap between the stand block 211 and the side wall of the groove 210. Furthermore, the stand block 211 has a T-shaped structure, and a T-shaped groove is provided on one side of the locking block 23. The T-shaped groove of the locking block 23 is slidably engaged with the stand block 211, and the other side of the locking block 23 is slidably abutted against the inner side wall of the groove 210. In this way, the locking block 23 can slide up and down relative to the battery box 21.

[0035] It should be noted that a circular groove is formed on the end of the locking block 23 near the groove 210. The two ends of the locking spring 25 abut against the inner bottom wall of the circular groove and the inner bottom wall of the groove 210, respectively, allowing the locking spring 25 to push the locking block 23 upwards relative to the groove 210. Furthermore, a sliding groove 212 is also formed on the battery box 21. The sliding groove 212 extends inwards from one side of the battery box 21, and the end of the sliding groove 212 away from the side of the battery box 21 communicates with the groove 210. For ease of description, the side of the battery box 21 near the bridge piece 12 is defined as the first side, and the side of the battery box 21 away from the bridge piece 12 is defined as the second side. Further, the battery box 21 includes a bottom shell and an outer shell, with the first side located on the bottom shell and the second side located on the outer shell. One end of the slide groove 212 is connected to the first side surface, and one side of the groove 210 is connected to the second side surface. The other ends of both the slide groove 212 and the groove 210 are connected to one end face of the battery box 21, thus allowing the slide groove 212 to communicate with the groove 210. Furthermore, the depth of the groove 210 relative to the end face of the battery box 21 is greater than the depth of the slide groove 212 relative to the end face of the battery box 21. This allows the locking block 23 to extend into the slide groove 212 when it extends upward relative to the groove 210, and the sliding direction of the locking block 23 is perpendicular to the opening direction of the slide groove 212. Furthermore, when the user brings the battery box 21 close to the bridge piece 12, the insert 22 is inserted into the slide groove 212 from the first side surface, and the end of the insert 22 away from the bridge piece 12 extends into the groove 210. Thus, when the locking spring 25 pushes the locking block 23 upward relative to the groove 210 and inserts into the slide groove 212 to engage with the insert block 22, the bridge plate 12 cannot drive the insert block 22 to slide out of the slide groove 212, thereby preventing the battery box 21 from detaching from the chair frame 10.

[0036] like Figures 3 to 4 , Figures 6 to 7 As shown, in one embodiment, the insert block 22 is provided with a locking angle 220, and the locking block 23 is provided with an oblique angle 230, and the locking angle 220 and the oblique angle 230 slide against each other.

[0037] It should be noted that the insert block 22 is provided with a retaining angle 220, and the retaining block 23 is provided with a chamfer 230. Both the retaining angle 220 and the chamfer 230 have inclined surfaces. For ease of description, the inclined surface on the retaining angle 220 is defined as the first inclined surface, and the inclined surface on the chamfer 230 is defined as the second inclined surface. Furthermore, the insert block 22 has an inner groove on the side facing the groove 210, and the retaining angle 220 is located on the end of the inner groove away from the bridge piece 12. Specifically, the retaining angle 220 tends to have a right-angled triangular structure, and the first inclined surface is located on the side of the retaining angle 220 away from the bridge piece 12. The angle 230 is located on the end of the locking block 23 away from the locking spring 25, and the angle 230 is also curved towards a right-angled triangle structure. The second inclined surface faces the first inclined surface, so that when the insert 22 is inserted into the slide groove 212, the first inclined surface will slide against the second inclined surface, thereby causing the locking angle 220 to push the locking block 23 downward to squeeze the locking spring 25 into the groove 210. When the insert 22 drives the locking angle 220 to slide past the angle 230, the locking spring 25 will push the locking block 23 to drive the angle 230 upward into the inner groove, so that the right-angled surface of the locking angle 220 and the right-angled surface of the angle 230 approach each other, thereby preventing the insert 22 from sliding out of the slide groove 212. In this way, the user can fix the battery box 21 on the chair frame 10 by inserting the insert 22 into the slide groove 212, thereby reducing the difficulty of battery installation and allowing the user to quickly install the battery for the electric wheelchair.

[0038] like Figures 3 to 4 , Figure 5 , Figure 8 As shown, in one embodiment, a pusher block 24 is slidably disposed on a battery box 21 along the lateral direction, and a beveled portion 240 is provided on the pusher block 24.

[0039] It should be noted that one end of the groove 210 is connected to the second side surface, and the push block 24 slides laterally within the groove 210 from the second side surface. Furthermore, the push block 24 tends to have a U-shaped structure. Since the upright block 211 is positioned in the middle relative to the bottom wall of the groove 210, there is a gap between the two sides of the upright block 211 and the two inner side walls of the groove 210 facing each other. When the push block 24 slides within the groove 210, the two ends of the push block 24 are located on both sides of the locking block 23 / upright block 211, respectively. Furthermore, protrusions 231 are provided on both sides of the locking block 23, and inclined surfaces 240 are provided on both ends of the push block 24, with the inclined surfaces 240 located on the side of the push block 24 closest to the bottom wall of the groove 210. Thus, when the push block 24 slides into the groove 210, the two inclined surfaces 240 on the push block 24 slide and push against the two protrusions 231 on both sides of the locking block 23. The two protrusions 231 move downwards along the two inclined surfaces 240, causing the locking block 23 to compress the locking spring 25. This causes the locking block 23 to move the inclined surfaces away from the inner groove, and the locking angle 220 loses the obstruction of the inclined angle 230. The insert block 22 can then drive the locking angle 220 to slide out of the slide groove 212, allowing the battery box 21 to quickly detach from the chair frame 10. This allows the user to quickly remove the battery box 21 from the chair frame 10 by pressing the push block 24, thereby reducing the difficulty of battery removal. When a user urgently needs to use an electric wheelchair after its battery has run out of power, the user can quickly install the battery box 21 by inserting the plug 22 into the slide 212, or quickly remove the battery box 21 by pressing the push block 24. This reduces the difficulty of battery installation and removal, while also improving the efficiency and emergency response capability of the electric wheelchair.

[0040] like Figure 1 , Figures 3 to 4 As shown, in one embodiment, the disassembly and assembly structure 20 further includes a pressure block 26, which tends to be L-shaped. The pressure block 26 is screwed onto the upright block 211 / battery box 21, and is located between the sliding groove 212 and the recess 210 to separate the sliding groove 212 and the recess 210. The pressure block 26 has an insertion hole for the locking block 23 to pass through. This prevents the locking spring 25 from pushing the locking block 23 off the battery box 21.

[0041] like Figures 3 to 4 As shown, in one embodiment, the disassembly structure 20 further includes a top post 27 and a push spring 28. A top groove 221 is provided on the insert block 22. The top post 27 slides in the top groove 221. The two ends of the push spring 28 abut against the inner bottom wall of the top groove 221 and the top post 27, respectively. The end of the push spring 28 that pushes the top post 27 away from the top groove 221 abuts against one side wall of the slide groove 212.

[0042] It should be noted that a top groove 221 is provided on the end face of the insert block 22 away from the bridge piece 12. The top post 27 slides in the top groove 221, and the push spring 28 is located in the top groove 221. The two ends of the push spring 28 abut against the inner bottom wall of the top groove 221 and one end of the top post 27, respectively, so that the push spring 28 can push the top post 27 out of the top groove 221. Thus, when the insert 22 is inserted into the slide groove 212, it causes the top post 27 to approach an inner wall of the slide groove 212. Since the insert 22 needs to drive the locking angle 220 to slide past the oblique angle 230 to position the oblique angle 230 in the inner groove to prevent the locking angle 220 from sliding out of the slide groove 212, this will cause the insert 22 and the locking angle 23 to be in an interference fit. When the user uses the electric wheelchair to travel on the road, the unevenness of the road surface will cause the electric wheelchair to sway, which will cause the bridge plate 12 and the battery box 21 to wobble. Therefore, when the insert 22 is inserted into the slide groove 212, the push spring 28 abuts the push top post 27 against an inner wall of the slide groove 212, so that the right angle surface of the locking angle 220 and the right angle surface of the oblique angle 230 are in close contact, thereby reducing the swaying of the battery box 21 relative to the chair frame 10.

[0043] like Figures 2 to 4 , Figure 6 As shown, in one embodiment, the bridge plate 12 has a through hole 120 for installing a wire connector, and the first side of the battery box 21 also has a through hole 213 for installing a wire connector, with the through hole 120 and the through hole 213 aligned. When the battery box 21 is installed on the bridge plate 12, the through hole 120 and the through hole 213 communicate. This allows the battery box 21 to be quickly installed on the bridge plate 12 while simultaneously being electrically connected to the electrical components of the electric wheelchair. For example, the wire connector installed on the through hole 120 is provided with a spring contact, and the wire connector installed on the battery box 21 is provided with an abutment guide plate. Thus, when the battery box 21 is quickly installed on the bridge plate 12, the abutment guide plate simultaneously contacts the spring contact to achieve electrical connection. Furthermore, the push spring 28 pushes the top post 27 to abut against the inner side wall of the slide groove 212 so that the right angle surface of the locking angle 220 and the right angle surface of the oblique angle 230 are tightly fitted together. At the same time, it also makes the abutting guide plate and the spring plate tightly fitted together. This can avoid the risk of intermittent contact between the abutting guide plate and the spring plate when the battery box 21 shakes relative to the chair frame 10, which would cause circuit instability and lead to battery failure.

[0044] like Figures 1 to 5 As shown, in one embodiment, the battery box 21 is still provided with a positioning block 214, which is located on the end of the battery box 21 away from the groove 210 and is close to the first side.

[0045] It should be noted that the frame structure is composed of several interconnected rods, tending towards a frame structure, while the two ends of the bridge plate 12 are connected to the rods facing the frame structure. Thus, when installing the battery box 21, the user first abuts the positioning block 214 against the rod at an angle, and then brings the slide groove 212 close to the insert block 22 on the bridge plate 12, so that the insert block 22 is inserted into the slide groove 212 and engages with the locking block 23, thereby fixing the battery box 21 to the chair frame 10.

[0046] like Figures 3 to 4 , Figure 6 As shown, in one embodiment, the cross-sectional area of ​​at least a portion of the structure of the insert 22 gradually decreases in the direction away from the chair frame 10.

[0047] It should be noted that the insert 22 is disposed on the bridge plate 12, for example, the insert 22 and the bridge plate 12 are integrally formed. The cross-sectional area of ​​the end of the insert 22 away from the chair frame 10 gradually decreases in the direction away from the chair frame 10. Since the battery box 21 needs to be installed on the chair frame 10 at an inclined angle so that the positioning block 214 abuts against the rod, an angle will also appear between the insert 22 and the slide groove 212, which makes it impossible for the insert 22 to be inserted into the slide groove 212. Thus, the cross-sectional area of ​​the end of the insert 22 away from the bridge plate 12 gradually decreases in the direction away from the bridge plate 12, so that the cross-sectional area of ​​the end of the insert 22 near the slide groove 212 is smaller than the cross-sectional area of ​​the slide groove 212. This allows the insert 22 to be inserted into the slide groove 212 at an inclined angle, thereby allowing the insert 22 to engage with the locking block 23.

[0048] like Figure 3 , Figure 5 As shown, in one embodiment, a lower retaining groove is formed on the inner bottom wall of the groove 210, and an upper retaining groove is formed on the side of the pressing block 26 near the push block 24. Limiting blocks are provided on both the upper and lower ends of the push block 24, and the two limiting blocks slide in the upper and lower retaining grooves respectively. In this way, the push block 24 can slide relative to the groove 210 and cannot slide out of the groove 210.

[0049] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the 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 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 quick-release battery structure for an electric wheelchair, characterized in that, include: Chair frame; and The disassembly and assembly structure includes a battery box, a plug, a locking block, a push block, and a locking spring. The plug is disposed on the chair frame. The locking block is vertically slidably disposed on the battery box. The locking spring is disposed on the locking block and pushes the locking block upward relative to the battery box to engage with the plug. The push block is horizontally slidably disposed on the battery box and has an inclined surface. The locking block has a protrusion. When the push block is subjected to external force, it slides closer to the locking block, causing the protrusion to slide downward along the inclined surface to move away from the plug.

2. The quick-release battery structure for electric wheelchairs according to claim 1, characterized in that, The battery box has a groove and a stand is provided. The stand is located on the inner bottom wall of the groove, and the locking block slides on the stand.

3. The quick-release battery structure for electric wheelchairs according to claim 2, characterized in that, A circular groove is provided on one end of the locking block, and the two ends of the locking spring abut against the inner bottom wall of the circular groove and the inner bottom wall of the groove, respectively. The locking spring pushes the locking block to engage with the insert block.

4. The quick-release battery structure for electric wheelchairs according to claim 3, characterized in that, The insert block is provided with a locking angle, and the locking block is provided with an angled angle, and the locking angle and the angled angle slide against each other.

5. The quick-release battery structure for electric wheelchairs according to claim 4, characterized in that, The insert block has an inner groove, and the locking angle is located on the inner groove.

6. The quick-release battery structure for electric wheelchairs according to claim 3, characterized in that, The battery box is also provided with a sliding groove, which extends inward from one side of the battery box to the groove, and the sliding groove is connected to the groove, and the insert block slides in the sliding groove.

7. The quick-release battery structure for electric wheelchairs according to claim 6, characterized in that, The disassembly and assembly structure also includes a top column and a push spring. The insert block has a top groove. The top column slides in the top groove. The two ends of the push spring abut against the inner bottom wall of the top groove and the top column, respectively. The push spring pushes the end of the top column away from the top groove to abut against one side wall of the sliding groove.

8. The quick-release battery structure for electric wheelchairs according to claim 7, characterized in that, The cross-sectional area of ​​at least a portion of the insert gradually decreases in the direction away from the chair frame.

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