An electrically powered luggage case having a waterproof rear cover

Abstract

The application relates to the technical field of electric suitcases, in particular to an electric suitcase with a waterproof rear cover, which comprises a box body and a rear cover assembly detachably arranged on the box body, a pull rod is arranged in the box body, the telescopic end of the pull rod penetrates through the rear cover assembly and can be extended outward, a battery is arranged in the rear cover assembly, the rear cover assembly comprises a pull rod mounting portion located at the top edge of the box body, a battery mounting portion located at the side of the box body and a control button mounting portion located below the battery mounting portion, an arc-shaped cover plate is rotatably arranged on the pull rod mounting portion, the arc-shaped cover plate is located above the telescopic end of the pull rod and can abut against the top surface of the pull rod mounting portion; the battery mounting portion is in the shape of a square shell with one open side, a rotating support is rotatably arranged in the battery mounting portion, the battery can be detachably connected in the rotating support, a side cover is detachably connected to the open side of the battery mounting portion, and a sealing track is arranged on the side of the open side of the battery mounting portion, and the side cover is slidably connected in the sealing track.

Description

Technical Field

[0001] This application relates to the field of electric luggage technology, and in particular to an electric luggage with a waterproof back cover. Background Technology

[0002] Electric suitcases integrate traditional suitcase technology, small-scale electric drive technology, and intelligent control technology. Through optimized structural design, lithium batteries, motors, and control modules are embedded within the suitcase. Furthermore, by integrating Bluetooth control and motor speed regulation technology, precise speed control and steering are achieved. Due to airline requirements, lithium batteries in electric suitcases, especially those exceeding 100Wh, must be carried on board and are prohibited from being checked in. Therefore, manufacturers typically place the lithium batteries externally at the rear of the suitcase. This external, detachable design allows users to quickly remove the batteries during security checks, avoiding baggage refusals or inspections due to battery issues, significantly improving travel efficiency.

[0003] However, externally mounted, detachable batteries pose risks of water ingress and impact damage. Because the battery interface is completely exposed and the battery compartment has gaps, the pull rod holes, wiring harness exit holes, and gaps along the cover edge are all major pathways for water ingress. Rainwater / accumulated water can form a weak electrolyte that seeps in along the seams and corrodes the BMS and cell connection points. Furthermore, externally mounted batteries lack a protective casing, leaving them directly exposed to the outside. During towing, handling, and security inspections, they are susceptible to impacts / squeezing, leading to casing deformation, internal tab breakage, and separator damage. In severe cases, this can cause internal short circuits and thermal runaway, resulting in fire and seriously compromising safety.

[0004] To address the aforementioned technical problems, Chinese patent document CN207199693U discloses a removable battery for an electric suitcase, comprising a battery compartment and a battery compartment cover hinged at one end, which are fastened together by a fastening structure at their free ends. The battery compartment has an open rectangular container structure, and the compartment wall has an installation structure along its outwardly extending edge. The battery compartment cover has a battery fixing structure for mounting the battery, and the battery is removable. The battery compartment and battery compartment cover also form a rotation guide structure and an elastic opening mechanism, which provides opening assistance to the battery compartment cover. This patent allows for a recessed, concealed installation structure from the outer wall of the suitcase, facilitating opening the cover from the outside and improving battery protection. However, this design makes it impossible to observe the battery level display, and the battery, directly connected to the battery compartment cover, has poor impact resistance, limited waterproofing, and also affects heat dissipation.

[0005] Therefore, it is necessary for those skilled in the art to provide an electric suitcase with a waterproof back cover to protect the external battery, improve the battery's waterproof and shockproof performance, and ensure heat dissipation. Summary of the Invention

[0006] The purpose of this application is to provide an electric suitcase with a waterproof back cover to solve the technical problem of poor waterproof and impact resistance of batteries placed on the outside of electric suitcases in the prior art.

[0007] The technical solution adopted by this application to solve its technical problem is as follows: an electric suitcase with a waterproof back cover, including a suitcase body and a back cover assembly detachably mounted on the suitcase body. A pull rod is provided inside the suitcase body, and the telescopic end of the pull rod passes through the back cover assembly and can extend outward. A battery is installed inside the back cover assembly. The back cover assembly includes a pull rod mounting part located at the top edge of the suitcase body, a battery mounting part located on the side of the suitcase body, and a control button mounting part located below the battery mounting part. An arc-shaped cover plate is rotatably provided on the pull rod mounting part, and the arc-shaped cover plate is located above the telescopic end of the pull rod and can abut against the top surface of the pull rod mounting part. The battery mounting part has a square shell structure with one open side. A rotating bracket is rotatably provided inside the battery mounting part. The battery is detachably connected to the rotating bracket. A side cover is detachably connected to the open surface of the battery mounting part. A sealing track is provided on the side of the open surface of the battery mounting part. The side cover is slidably connected to the sealing track. A locking part is also provided inside the back cover assembly to lock the rotating bracket to the battery mounting part.

[0008] Furthermore, a gap is left between the battery and the side cover; anti-slip protrusions are provided on the opposite side walls of the rotating bracket, the anti-slip protrusions abut against the side wall of the battery, and the anti-slip protrusions extend from the side wall of the battery to the edge of the side wall, and a gap is left between the inner wall of the rotating bracket and the side wall of the battery.

[0009] Furthermore, the battery mounting part has a snap-fit ​​part on the surface away from the opening, and the rotating bracket can be snap-fitted onto the snap-fit ​​part. There is a gap between the rotating bracket and the battery mounting part. The snap-fit ​​part is made of elastic material and is vertically arranged inside the battery mounting part.

[0010] Furthermore, the locking part includes a mounting rail, a push rod retractably disposed within the mounting rail, and a push head that abuts against the push rod and is retractably disposed within the mounting rail. The end of the push head can extend to the outside of the mounting rail and can be snapped into the rotating bracket. The push rod is vertically disposed within the mounting rail, and the push head is horizontally disposed within the mounting rail. The push rod can push the push head to move.

[0011] Furthermore, the end of the push head facing the rotating bracket is provided with a locking head. There are two locking heads arranged symmetrically. The locking heads are made of elastic material. A connecting hole is opened on the wall of the battery mounting part opposite to the locking part. The connecting hole penetrates the wall of the battery mounting part and connects to the mounting track. The connecting hole is directly opposite the locking head.

[0012] Furthermore, the rotating bracket is provided with a locking hole facing the connecting hole, and the battery is provided with an extension hole facing the locking hole. The locking head can pass through the connecting hole and the locking hole in sequence and extend into the extension hole. The locking head can be locked and connected in the locking hole.

[0013] Furthermore, a tightening portion is formed in the middle of the snap-fit ​​head, which can abut against the inner wall of the connecting hole, and the distance between the two tightening portions is greater than the width of the inner wall of the connecting hole; a snap-fit ​​portion is formed at the end of the snap-fit ​​head, which can be snapped into the snap-fit ​​hole, and the surface of the snap-fit ​​portion facing the snap-fit ​​hole is inclined, and the snap-fit ​​portion can extend into the extension hole.

[0014] Furthermore, the rotating bracket has a recessed groove at one end near the control button mounting part, and a rotating shaft is symmetrically provided on the side wall of the rotating bracket near the recessed groove. The rotating shaft is rotatably connected to the battery mounting part, and the axis of the rotating shaft passes through the recessed groove.

[0015] Furthermore, the area of ​​the side cover is larger than the opening of the battery mounting portion, and the side cover is made of a transparent material.

[0016] The beneficial effects of this application are as follows: This application uses an arc-shaped cover plate and side cover to cover the pull rod, battery and other components and their connecting gaps on the electric luggage box, thereby improving its waterproof performance. At the same time, the battery has a gap between the anti-slip protrusion and the rotating bracket, and the rotating bracket has a gap between the insert and the battery mounting part. There is also a gap between the battery and the side cover. By setting multiple gaps, the heat dissipation and impact resistance of the battery are improved. Furthermore, the anti-slip protrusion and insert made of elastic material can effectively improve the shock resistance of the battery, reduce the impact of the box inside the battery, and provide a cushioning effect for the battery to resist external impacts, thereby reducing bumps and collisions and comprehensively improving the safety and stability of battery use. Attached Figure Description

[0017] Figure 1 This is a perspective view of the electric suitcase with a waterproof back cover according to this application.

[0018] Figure 2 yes Figure 1 A diagram showing the battery assembly / disassembly status.

[0019] Figure 3 yes Figure 1 Exploded view.

[0020] Figure 4 This is a perspective view of the rear cover assembly of the electric luggage with a waterproof rear cover according to this application.

[0021] Figure 5 yes Figure 4 The main view.

[0022] Figure 6 yes Figure 5 Sectional view along the middle AA.

[0023] Figure 7 yes Figure 5 A cross-sectional view along the middle BB.

[0024] Figure 8 yes Figure 4 An explosion diagram.

[0025] Figure 9 yes Figure 8 A diagram from another direction.

[0026] Figure 10 This is a perspective view of the locking mechanism in the electric suitcase with a waterproof back cover according to this application.

[0027] The components in the attached diagram are labeled as follows: 10. Housing; 11. Internal storage cavity; 12. Mounting notch; 13. Pull rod; 14. Battery; 141. Extension hole; 20. Rear cover assembly; 21. Pull rod mounting part; 22. Battery mounting part; 221. Connecting hole; 23. Control button mounting part; 24. Rotating bracket; 241. Rotating shaft; 242. Retraction groove; 243. Anti-slip protrusion; 244. Snap-fit ​​hole; 25. Arc-shaped cover plate; 26. Side cover; 27. Locking part; 271. Mounting rail; 272. Push rod; 273. Push head; 274. Button; 275. Guide shaft; 276. Snap-fit ​​head; 277. Tightening part; 278. Snap-fit ​​part; 28. Sealing rail; 29. ​​Snap-fit ​​part. Detailed Implementation

[0028] The present application will now be described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present application, and therefore only show the components relevant to the present application.

[0029] Please see Figures 1-3 This application provides an electric suitcase with a waterproof back cover, including a suitcase body 10 and a back cover assembly 20 detachably mounted on the suitcase body 10. The suitcase body 10 has an inner storage cavity 11, and the suitcase body 10 has an installation notch 12. The back cover assembly 20 is installed in the installation notch 12, and the back cover assembly 20 and the installation notch 12 are sealed together.

[0030] The housing 10 is equipped with a pull rod 13, which includes a fixed end and a telescopic end. The fixed end of the pull rod 13 is installed in the inner storage cavity 11, and the telescopic end of the pull rod 13 passes through the rear cover assembly 20 and can extend outward. A battery 14 is detachably connected inside the rear cover assembly 20.

[0031] Understandably, the electric suitcase also has a handle, control components, speed control handle, telescopic rod and other equipment inside. For the specific structure, please refer to the electric suitcase disclosed in Chinese Patent CN109793327A, which will not be described in detail here.

[0032] Further, please refer to Figures 3-6 The rear cover assembly 20 includes a pull rod mounting part 21 located at the top edge of the housing 10, a battery mounting part 22 located on the side of the housing 10, and a control button mounting part 23 located below the battery mounting part 22.

[0033] The pull rod mounting part 21 is located at the adjacent edges of the top and side surfaces of the housing 10. The pull rod mounting part 21 has a triangular shell-like structure with one open side. The telescopic end of the pull rod 13 passes through the bottom surface of the pull rod mounting part 21 and extends upwards. The pull rod mounting part 21 is used to accommodate the pull rod 13. An arc-shaped cover plate 25 is also provided on the pull rod mounting part 21. The arc of the arc-shaped cover plate 25 matches the arc of the adjacent edges of the top and side surfaces of the housing 10. The arc-shaped cover plate 25 is rotatably mounted on the open surface of the pull rod mounting part 21, and is rotatably positioned above the telescopic end of the pull rod 13. The surface of the arc-shaped cover plate 25 facing the pull rod 13 can abut against the top surface of the pull rod mounting part 21. This covers the pull rod 13, preventing rainwater from flowing into the housing 10 from the pull rod 13, improving waterproof performance. Simultaneously, the arc-shaped cover plate 25 improves the overall flatness of the outer contour of the housing 10, enhancing its aesthetics.

[0034] In this embodiment, the area of ​​the arc-shaped cover plate 25 is larger than the area of ​​the opening surface of the pull rod mounting part 21, so as to ensure complete coverage of the opening surface of the pull rod mounting part 21 and prevent water accumulation; the part of the arc-shaped cover plate 25 that abuts against the pull rod mounting part 21 is provided with an adsorption component, such as a magnet, to prevent the arc-shaped cover plate 25 from shaking and to ensure stability during use.

[0035] In this embodiment, the pull rod 13 has an inverted U-shaped structure, and the fixed ends of the pull rod 13 are two and located on both sides of the battery mounting part 22, thereby ensuring the compactness of the structure.

[0036] The battery mounting part 22 is located below the pull rod mounting part 21. The battery mounting part 22 has a square shell structure with one open side. A rotating bracket 24 is rotatably provided inside the battery mounting part 22. The battery 14 is detachably connected to the rotating bracket 24, and a gap is left between the rotating bracket 24 and the battery mounting part 22. A snap-fit ​​part 29 is provided on the side of the battery mounting part 22 away from the opening. The rotating bracket 24 can be snapped into the snap-fit ​​part 29. The rear cover assembly 20 also has a locking part 27, which is located above the snap-fit ​​part 29. The locking part 27 is used to lock the rotating bracket 24 into the battery mounting part 22.

[0037] Please see Figure 5 , Figure 8 In this embodiment, the rotating bracket 24 is a square shell structure with openings on both sides. One opening of the rotating bracket 24 corresponds to the opening of the battery mounting part 22, so as to ensure that the rotating bracket 24 can be rotated to the outside from the opening of the battery mounting part 22. The other opening of the rotating bracket 24 is located at the top of the rotating bracket 24 and can be directly opposite the bottom surface of the pull rod mounting part 21. At the same time, a recessed groove 242 is provided on the rotating bracket 24 near the control button mounting part 23. A gap is left between the inner wall of the rotating bracket 24 and the side wall of the battery 14. In this way, the battery 14 can be pulled out from the opening of the rotating bracket 24. When in use, the battery 14 is inserted into the rotating bracket 24 through the top opening of the rotating bracket 24. Both sides of the battery 14 are exposed to the outside, which makes it easy for the user to observe the power level and ensures heat dissipation. When removing the battery 14, the user places his / her hand in the recessed groove 242 and pulls the battery 14 upward, so that the battery 14 is removed from the upper opening of the rotating bracket 24, realizing the installation and removal of the battery 14.

[0038] The rotating bracket 24 has anti-slip protrusions 243 on its opposite side walls. These protrusions abut against the side walls of the battery 14 and extend from the side walls to their edges. The anti-slip protrusions 243 reduce the shaking of the battery 14 within the rotating bracket 24 and create a gap between the side walls of the battery 14 and the rotating bracket 24 to ensure heat dissipation and reduce heat-induced deformation. The anti-slip protrusions 243 extending to the edge of the side walls form a C-shaped structure, creating a sliding track between two protrusions 243. The battery 14 is slidably connected within this sliding track, ensuring accurate installation and preventing it from coming loose.

[0039] In this embodiment, the rotating bracket 24 also has an electrical connector (not shown in the figure). One end of the electrical connector is located on the rotating bracket 24 and is electrically connected to the battery 14, and the other end of the electrical connector is located inside the housing 10 and is electrically connected to the control component, so as to realize the power supply to the electric luggage box.

[0040] The rotating bracket 24 has symmetrical rotating shafts 241 on its side wall near the retraction groove 242. The rotating shafts 241 are rotatably connected to the battery mounting part 22 by bearings, and the axis of the rotating shafts 241 passes through the retraction groove 242. In use, the bottom wall of the retraction groove 242 is pressed down, and the rotating bracket 24 rotates around the axis of the rotating shaft 241, so that the rotating bracket 24 is disengaged from the limit of the locking part 29, ensuring that the rotating bracket 24 can quickly rotate out of the battery mounting part 22.

[0041] In this embodiment, the snap-fit ​​part 29 is made of an elastic material, including but not limited to thermoplastic elastomers, elastic rubber, or modified plastics with elasticity. The snap-fit ​​part 29 is vertically disposed in the battery mounting part 22. One side of the rotating bracket 24 can be snap-fitted onto the snap-fit ​​part 29. Specifically, the snap-fit ​​part 29 has a protrusion (not shown in the figure), and the rotating bracket 24 has a groove that matches the protrusion. The snap-fit ​​part 29 snaps the rotating bracket 24 into the battery mounting part 22 to achieve pre-positioning of the rotating bracket 24, ensuring the stability and accuracy of the connection, preventing shaking or tilting, and leaving a gap between the rotating bracket 24 and the battery mounting part 22 to improve heat dissipation.

[0042] Please see Figures 6-10 The locking part 27 includes a mounting rail 271, a push rod 272 retractably disposed within the mounting rail 271, and a push head 273 that abuts against the push rod 272 and retractably disposed within the mounting rail 271. The end of the push head 273 can extend to the outside of the mounting rail 271 and can be snapped into the rotating bracket 24. The push rod 272 is vertically disposed within the mounting rail 271, and the push head 273 is horizontally disposed within the mounting rail 271. The push rod 272 can push the push head 273 to move.

[0043] Specifically, one end of the push rod 272 is provided with a button 274, and the other end of the push rod 272 pushes against the push head 273. A button spring (not shown in the figure) is provided between the button 274 and the mounting rail 271, which allows the push rod 272 to move vertically back and forth within the mounting rail 271. The surface of the push rod 272 facing the push head 273 is inclined, and the surface of the push head 273 that abuts against the push rod 272 is also inclined. Thus, when the push rod 272 is pressed, the push head 273 is pushed by the inclined surface and moves within the mounting rail 271.

[0044] The push head 273 has a guide shaft 275 at one end and a locking head 276 at the other end. The guide shaft 275 can be plugged into the mounting rail 271. A return spring (not shown in the figure) is sleeved on the guide shaft 275. One end of the return spring abuts against the inner wall of the mounting rail 271, and the other end of the return spring abuts against the push head 273. The return spring ensures that the push head 273 moves horizontally back and forth within the mounting rail 271.

[0045] Two locking heads 276 are provided and symmetrically arranged. The locking heads 276 are made of elastic material, including but not limited to thermoplastic elastomers, elastic rubber, or modified plastics with elasticity. A connecting hole 221 is provided on the wall of the battery mounting part 22 opposite to the locking part 27. The connecting hole 221 penetrates the wall of the battery mounting part 22 and connects to the mounting track 271. The connecting hole 221 is opposite to the locking head 276.

[0046] The rotating bracket 24 is provided with a locking hole 244, which penetrates the wall of the rotating bracket 24 and is directly opposite the connecting hole 221. The battery 14 is provided with an extension hole 141, which extends inward from the side of the battery 14 and is directly opposite the locking hole 244. The locking head 276 can pass through the connecting hole 221 and the locking hole 244 in sequence and extend into the extension hole 141. The locking head 276 can be locked and connected in the locking hole 244.

[0047] A tightening portion 277 is formed in the middle of the locking head 276. The tightening portion 277 can abut against the inner wall of the connecting hole 221, and the distance between the two tightening portions 277 is greater than the width of the inner wall of the connecting hole 221. Thus, when the tightening portion 277 moves into the connecting hole 221, the two locking heads 276 move closer to each other. A locking portion 278 is formed at the end of the locking head 276. The locking portion 278 can be locked onto the locking hole 244. The surface of the locking portion 278 facing the locking hole 244 is inclined, and the locking portion 278 can extend into the extension hole 141.

[0048] Please see Figure 7 , Figure 10 The locking part 27 is located on one side of the pull rod mounting part 21 and is isolated from the pull rod 13. The button 274 is located on one side of the arc-shaped cover plate 25, so as to reduce the impact of the pull rod 13 when the battery 14 is removed. The arc-shaped cover plate 25 is used to reduce daily splashes and rainwater from entering the pull rod 13 or entering the box 10 from the joint of the pull rod 13.

[0049] When it is necessary to manually pull the electric suitcase, the arc-shaped cover 25 can be flipped over and the telescopic end of the pull rod 13 can be pulled out to enable manual pulling of the electric suitcase.

[0050] When the battery is removed or installed, the arc-shaped cover 25 is closed. Pressing down button 274 moves the push rod 272 downward, pushing the push head 273 and retracting it backward. The locking head 276 retracts backward simultaneously. The tightening part 277 on the locking head 276 is squeezed by the inner wall of the connecting hole 221, causing the two locking heads 276 to move closer to each other. This causes the locking parts 278 to move closer to each other and disengage from the locking hole 244, thereby releasing the lock on the rotating bracket 24, allowing it to rotate freely and facilitating the removal of the battery 14. Releasing button 274 resets the push rod 272, and the push head 273 and locking head 276 reset simultaneously.

[0051] When locking the rotating bracket 24, simply push the rotating bracket 24 directly into the battery mounting part 22. The locking hole 244 on the rotating bracket 24 is aligned with the locking part 278 on the locking head 276. When the operator pushes the rotating bracket 24 inward, the push head 273 will move slightly backward, but the displacement is limited due to the obstruction of the tightening part 277. Then, under the elastic action of the return spring, the locking part 278 on the locking head 276 will pass through the locking hole 244 and extend into the extension hole 141, thereby achieving the locking and locking of the rotating bracket 24.

[0052] The tightening part 277 of this application not only achieves tightening control of the locking head 276, but also increases the resistance to the movement of the pushing head 273, thus preventing accidental contact during the installation and removal of the battery 14 and greatly improving its stability. Simultaneously, a gap is left between the battery 14 and the rotating bracket 24 using the anti-slip protrusion 243, and a gap is left between the rotating bracket 24 and the battery mounting part 22 using the locking part 29. By setting multiple such gaps, the heat dissipation effect of the battery 14 is improved. The anti-slip protrusion 243 and the locking part 29, made of elastic material, effectively improve the shock resistance of the battery 14, reduce the impact on the battery 14 from inside the housing 10, and provide a cushioning effect for the battery 14 to resist external impacts, thereby reducing bumps and improving the safety and stability of the battery 14.

[0053] Please see Figure 1 , Figure 2 In this embodiment, a sealing track 28 is provided on the side of the opening of the battery mounting part 22. A side cover 26 is detachably connected to the opening of the battery mounting part 22. The side cover 26 is slidably connected within the sealing track 28. The area of ​​the side cover 26 is larger than the opening of the battery mounting part 22. The side cover 26 is made of a transparent material, including but not limited to acrylic sheet. A gap is left between the battery 14 and the side cover 26 to provide cushioning for the battery 14, improving its waterproof and impact-resistant effect without obstructing the display of the battery 14. (See battery installation / removal state) Figure 2 First, remove the side cover 26, press down the recess 242 to make the rotating bracket 24 rotate out, and pull the battery out upward to realize the installation and removal of the battery.

[0054] In this embodiment, a rubber sealing gasket is provided inside the sealing track 28, and the side cover 26 is tightly fitted and connected to the sealing gasket. Multiple sealing tracks 28 are symmetrically arranged on the side of the opening of the battery mounting portion 22 to ensure the stability of the side cover 26 connection. Simultaneously, a rubber sealing gasket is also provided on the edge of the side cover 26 facing the battery 14 to improve the waterproof performance of the battery 14 portion of the electric luggage compartment, preventing everyday splashes and rain, and improving the safety of the device. If button 274 is accidentally pressed, the side cover 26 can also prevent the battery 14 from popping out, further improving safety.

[0055] In other embodiments, the side cover 26 is made of waterproof fabric, such as polyethylene tarpaulin, and is detachably connected to the opening of the battery mounting portion 22 by a zipper, thereby improving heat dissipation and breathability while ensuring waterproofing.

[0056] In this embodiment, a switch (not shown in the figure) is provided in the control button mounting part 23. The switch is electrically connected to the battery 14 and is used to control the start and stop of the electric luggage box.

[0057] This application uses an arc-shaped cover plate 25 and a side cover 26 to cover the pull rod 13, battery 14 and other components and their connecting gaps on the electric luggage case, thereby improving its waterproof performance. At the same time, the battery 14 has a gap between it and the rotating bracket 24 using the anti-slip protrusion 243, and the rotating bracket 24 has a gap between it and the battery mounting part 22 using the snap-fit ​​part 29. There is also a gap between the battery 14 and the side cover 26. By setting multiple gaps, the heat dissipation and impact resistance of the battery 14 are improved. Furthermore, the anti-slip protrusion 243 and the snap-fit ​​part 29, made of elastic material, can effectively improve the shock resistance of the battery 14, reduce the impact of the case 10 on the battery 14, and provide a cushioning effect for the battery 14 to resist external impacts, thereby reducing bumps and collisions and comprehensively improving the safety and stability of the battery 14.

[0058] It is understood that this application has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this application. Furthermore, based on the teachings of this application, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this application. Therefore, this application is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this application.

Claims

1. An electric suitcase with a waterproof back cover, comprising a suitcase body (10) and a back cover assembly (20) detachably mounted on the suitcase body (10), wherein a pull rod (13) is provided inside the suitcase body (10), the telescopic end of the pull rod (13) passes through the back cover assembly (20) and can extend outward, and a battery (14) is installed inside the back cover assembly (20), characterized in that, The rear cover assembly (20) includes a pull rod mounting part (21) located at the top edge of the housing (10), a battery mounting part (22) located on the side of the housing (10), and a control button mounting part (23) located below the battery mounting part (22). An arc-shaped cover plate (25) is rotatably provided on the pull rod mounting part (21). The arc-shaped cover plate (25) is located above the telescopic end of the pull rod (13) and can abut against the top surface of the pull rod mounting part (21). The battery mounting part (22) has a square shell structure with one open side. (22) is rotatably provided with a rotating bracket (24), the battery (14) is detachably connected to the rotating bracket (24), a side cover (26) is detachably connected to the opening surface of the battery mounting part (22), a sealing track (28) is provided on the side of the opening surface of the battery mounting part (22), the side cover (26) is slidably connected to the sealing track (28), and a locking part (27) is also provided in the rear cover assembly (20), the locking part (27) is used to lock the rotating bracket (24) to the battery mounting part (22).

2. The electric suitcase with a waterproof back cover according to claim 1, characterized in that, There is a gap between the battery (14) and the side cover (26); anti-slip protrusions (243) are provided on the opposite side walls of the rotating bracket (24), the anti-slip protrusions (243) abut against the side wall of the battery (14), and the anti-slip protrusions (243) extend from the side wall of the battery (14) to the edge of the side wall, and there is a gap between the inner wall of the rotating bracket (24) and the side wall of the battery (14).

3. The electric suitcase with a waterproof back cover according to claim 1, characterized in that, The battery mounting part (22) has a snap-fit ​​part (29) on the surface away from the opening. The rotating bracket (24) can be snap-fitted onto the snap-fit ​​part (29). There is a gap between the rotating bracket (24) and the battery mounting part (22). The snap-fit ​​part (29) is made of elastic material and is vertically arranged inside the battery mounting part (22).

4. The electric suitcase with a waterproof back cover according to claim 1, characterized in that, The locking part (27) includes a mounting rail (271), a push rod (272) retractably disposed in the mounting rail (271), and a push head (273) that abuts against the push rod (272) and retractably disposed in the mounting rail (271). The end of the push head (273) can extend to the outside of the mounting rail (271) and can be snapped into the rotating bracket (24). The push rod (272) is vertically disposed in the mounting rail (271), and the push head (273) is horizontally disposed in the mounting rail (271). The push rod (272) can push the push head (273) to move.

5. The electric suitcase with a waterproof back cover according to claim 4, characterized in that, The push head (273) has a locking head (276) at one end facing the rotating bracket (24). There are two locking heads (276) arranged symmetrically. The locking heads (276) are made of elastic material. A connecting hole (221) is opened on the wall of the battery mounting part (22) opposite to the locking part (27). The connecting hole (221) penetrates the wall of the battery mounting part (22) and connects to the mounting track (271). The connecting hole (221) is opposite to the locking head (276).

6. The electric suitcase with a waterproof back cover according to claim 5, characterized in that, The rotating bracket (24) is provided with a snap-fit ​​hole (244) facing the connecting hole (221), and the battery (14) is provided with an extension hole (141) facing the snap-fit ​​hole (244). The snap-fit ​​head (276) can pass through the connecting hole (221) and the snap-fit ​​hole (244) in sequence and extend into the extension hole (141). The snap-fit ​​head (276) can be snap-fitted into the snap-fit ​​hole (244).

7. The electric suitcase with a waterproof back cover according to claim 6, characterized in that, The middle part of the snap-fit ​​head (276) has a tightening part (277), which can abut against the inner wall of the connecting hole (221). At the same time, the distance between the two tightening parts (277) is greater than the width of the inner wall of the connecting hole (221). The end of the snap-fit ​​head (276) has a snap-fit ​​part (278), which can be snapped into the snap-fit ​​hole (244). The surface of the snap-fit ​​part (278) facing the snap-fit ​​hole (244) is inclined. The snap-fit ​​part (278) can extend into the extension hole (141).

8. The electric suitcase with a waterproof back cover according to claim 1, characterized in that, The rotating bracket (24) has a recessed groove (242) at one end near the control button mounting part (23). The rotating bracket (24) has symmetrical rotating shafts (241) on the side wall near the recessed groove (242). The rotating shafts (241) are rotatably connected to the battery mounting part (22), and the axis of the rotating shafts (241) passes through the recessed groove (242).

9. The electric suitcase with a waterproof back cover according to claim 1, characterized in that, The area of ​​the side cover (26) is larger than the opening of the battery mounting portion (22), and the side cover (26) is made of transparent material.

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