Electric luggage case

Abstract

The utility model relates to the technical field of luggage cases, in particular to an electric luggage case which comprises a case body, a front handle rod arranged outside the case body and a telescopic assembly arranged in the case body, and the telescopic assembly comprises a fixed seat, a fixed part and a lead screw which are arranged on the fixed seat, a sliding block arranged on the fixed part and the lead screw in a sleeving mode and a telescopic part arranged outside the fixed part in a sleeving mode. The lead screw drives the sliding block to slide in the extending direction of the fixing part, the telescopic part is connected with the sliding block, the telescopic part protrudes out of the box body and is connected with the front handle rod, a through groove and a matching hole are formed in the sliding block, the fixing part is inserted into the through groove in a matched mode, and the matching hole is in threaded connection with the lead screw. According to the electric luggage case, the structure of the telescopic assembly is optimized, part of the structure is made of light plastic, meanwhile, the fixing part and the telescopic part are both arranged to be of a hollow structure, the weight of the telescopic assembly is greatly reduced, then the overall weight of the electric luggage case is reduced, and the using effect is improved.

Description

Technical Field

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

[0002] With the fast pace of modern life, people are increasingly keen on traveling in their spare time. However, as people carry more and more items when traveling, traditional suitcases are revealing many problems in actual use. For example, when too many items are packed into a suitcase, it becomes extremely difficult to carry, especially during travel when it is necessary to frequently carry luggage or walk to the airport, often covering distances of several kilometers. This distance is too far for people dragging heavy suitcases, and walking the entire distance is too tiring and can also affect the efficiency of taking public transportation.

[0003] To address the aforementioned technical problems, Chinese patent document CN208550268U discloses an electric suitcase, comprising a suitcase body, a battery, a sleeve fixed inside the suitcase body, a telescopic rod installed inside the sleeve and protruding from the suitcase body that can slide relative to the sleeve, and two rear wheels located at the bottom of the suitcase body. The front end of the telescopic rod is connected to a front handlebar and the front wheels, and the suitcase body has a top for sitting. This patent solves the problem of carrying heavy items while traveling by using an electrically driven suitcase body, improving travel efficiency and enhancing the travel experience. However, the telescopic rod, sleeve, and motor driving the telescopic rod used in this patent are too heavy, resulting in a significant weight even before luggage is loaded into the suitcase, thus affecting its lifespan.

[0004] Therefore, it is necessary for those skilled in the art to provide an electric suitcase that reduces the weight of some of its structures and increases its service life. Utility Model Content

[0005] The purpose of this application is to provide an electric suitcase to solve the technical problem that the existing electric suitcases are too heavy, which affects the usage time.

[0006] The technical solution adopted by this application to solve its technical problem is: an electric suitcase, including a suitcase body, a front handle bar disposed outside the suitcase body, and a telescopic assembly disposed inside the suitcase body. The telescopic assembly includes a fixed base, a fixed part and a lead screw disposed on the fixed base, a slider sleeved on the fixed part and the lead screw, and a telescopic part sleeved outside the fixed part. The lead screw drives the slider to slide along the extension direction of the fixed part. The telescopic part is connected to the slider. The telescopic part protrudes out of the suitcase body and is connected to the front handle bar. The slider is provided with a through groove and a mating hole. The fixed part is mated and inserted into the through groove. The mating hole is threadedly connected to the lead screw.

[0007] Furthermore, the fixing part has a shell-like structure with one side open, and the lead screw is placed at the opening of the fixing part and is parallel to the fixing part.

[0008] Furthermore, the thickness of the slider near the mating hole is greater than the thickness near the through groove.

[0009] Furthermore, the through groove is provided with a U-shaped socket, which extends from one wall of the through groove toward the other wall, and the U-shaped socket divides the through groove into a receiving groove and a mating groove; the fixing part includes a first side wall and a second side wall located on adjacent sides of the opening surface, the first side wall being inserted into the receiving groove and the second side wall being inserted into the mating groove.

[0010] Furthermore, the inner wall of the fixing part is also provided with a plug, the plug is located between the first side wall and the second side wall, the plug is inserted into the U-shaped socket, and the plug and the U-shaped socket cooperate to separate the receiving groove and the mating groove.

[0011] Furthermore, a mounting strip is fitted inside the first side wall of the fixing part, and limit switches are respectively provided at both ends of the mounting strip. The slider is located between the two limit switches, and the limit switches are directly opposite the U-shaped socket. The side wall of the U-shaped socket can abut against the limit switches.

[0012] Furthermore, the telescopic part has an internally hollow shell structure, and a locking hole is provided on the telescopic part. A locking member is connected in the locking hole, and one end of the locking member penetrates the wall of the telescopic part and extends into the side wall of the slider.

[0013] Furthermore, the outer contours of the first sidewall and the second sidewall are irregular, the outer contour of the first sidewall is adapted to the inner wall contour of the receiving groove, and the outer contour of the second sidewall is adapted to the inner wall contour of the mating groove.

[0014] Furthermore, the fixing seat is disposed inside the housing and a drive motor is provided on the fixing seat. The lead screw is connected to the output shaft of the drive motor. The lead screw is located between the drive motor and the fixing part. A stop bar is provided on the side of the lead screw away from the fixing part. The stop bar faces the opening surface of the fixing part. The stop bar is made of plastic.

[0015] Furthermore, an end cap is plugged into the end of the fixing part away from the fixing seat, one end of the baffle is plugged into the fixing seat, and the other end of the baffle is plugged into the end cap.

[0016] Furthermore, the telescopic part has a concave surface on the side facing the drive motor, and there is a gap between the concave surface and the drive motor. The telescopic part encloses the fixing part, the lead screw, and the stop bar in the internal cavity of the telescopic part.

[0017] The beneficial effects of this application are as follows: By optimizing the structure of the telescopic component, this application uses lightweight plastic for some parts and makes both the fixing part and the telescopic part hollow. Compared with the heavier telescopic rods in the prior art, this application greatly reduces the weight of the telescopic component, thereby reducing the overall weight of the electric luggage and improving usability. Furthermore, by optimizing the structure of the slider within the telescopic component, this application improves the bonding strength between it and the fixing part, ensuring stability during use, improving resistance to deformation, and further reducing weight. Attached Figure Description

[0018] Figure 1 This is a perspective view of the electric suitcase of this application.

[0019] Figure 2 This is a perspective view of the electric luggage case with the front handle extended.

[0020] Figure 3 yes Figure 2 A schematic diagram with parts of the box omitted.

[0021] Figure 4 This is a perspective view of the telescopic component in the electric luggage case of this application.

[0022] Figure 5 This is an exploded view of the telescopic component in the electric luggage compartment of this application.

[0023] Figure 6 This is a perspective view of the slider in the electric luggage compartment of this application.

[0024] Figure 7 This is a front view of the telescopic component in the electric luggage case of this application.

[0025] Figure 8 yes Figure 7 Sectional view along the middle AA.

[0026] Figure 9 yes Figure 7 A cross-sectional view along the middle BB.

[0027] Figure 10 yes Figure 9 Schematic diagram of the isometric side.

[0028] Figure 11 yes Figure 8 A cross-sectional view along the center CC.

[0029] Figure 12 yes Figure 5 A magnified view of part D in the middle.

[0030] Figure 13 yes Figure 8 Schematic diagram of the isometric side.

[0031] Figure 14 This application provides a perspective view of the fixing part in an electric luggage case.

[0032] The components in the attached diagram are labeled as follows: 10. Housing; 11. Battery; 12. Controller; 13. Rear wheel; 14. Baffle; 141. Opening; 20. Telescopic assembly; 21. Fixing base; 22. Drive motor; 23. Fixing part; 231. First side wall; 232. Second side wall; 233. Insert strip; 234. Resettling strip; 235. Limit switch; 236. Stop bar; 24. Telescopic part; 241. Reinforcing rib; 242. Concave surface; 243. Locking hole; 244. Mating groove; 25. Slider; 251. Mating hole; 252. Through groove; 2521. Receiving groove; 2522. Mating groove; 253. U-shaped socket; 26. Lead screw; 28. End cap; 29. ​​Locking component; 30. Front handlebar; 31. Front wheel. Detailed Implementation

[0033] 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.

[0034] Please see Figure 1 , Figure 2 , Figure 3 This application provides an electric suitcase, including a suitcase body 10, a battery 11 and a controller 12 disposed on the suitcase body 10, a front handle bar 30 and a front wheel 31 disposed outside the suitcase body 10, and a telescopic assembly 20 disposed on the suitcase body 10. One end of the telescopic assembly 20 is connected to the suitcase body 10, and the other end of the telescopic assembly 20 is connected to the front handle bar 30. The telescopic assembly 20 is used to control the movement of the front handle bar 30 relative to the suitcase body 10.

[0035] In this embodiment, the housing 10 is equipped with a rear wheel 13, and the front wheel 31 and / or the rear wheel 13 are hub motor wheels used to drive the housing 10 to move. The front wheel 31 is rotatably mounted at the bottom of the front handlebar 30. By rotating the front handlebar 30, the front wheel 31 is driven to rotate synchronously, thereby achieving steering. The top of the front handlebar 30 is also equipped with a control component (such as a speed control handle, brake handle, etc.). The battery 11 is located outside the housing 10 for easy replacement, and the controller 12 is located inside the housing 10. The control component, battery 11, hub motor wheels, and telescopic component 20 are all connected to the controller 12. The specific structure and connection method of the control component can be found in the electric luggage box disclosed in Chinese Patent CN214776331 U, and the specific structure will not be described in detail here.

[0036] See riding mode. Figure 2The user can sit on the top of the suitcase 10. The telescopic component 20 drives the front handlebar 30 and the front wheel 31 to extend outward. The user can control the speed and direction of the suitcase 10 by operating the control component and the front handlebar 30, thereby realizing riding and greatly improving the convenience of carrying luggage. In the non-riding state, the telescopic component 20 drives the front handlebar 30 and the front wheel 31 to move towards the suitcase 10, thereby retracting and reducing the overall volume and improving the ease of use.

[0037] Please see Figure 3 , Figure 4 The telescopic assembly 20 includes a fixed part 23 and a telescopic part 24. The telescopic part 24 slidably protrudes beyond the fixed part 23, and a gap is left between the telescopic part 24 and the fixed part 23. This gap is used to ensure the stability of the sliding of the telescopic part 24 relative to the fixed part 23 and to prevent friction. The fixed part 23 is disposed inside the housing 10, and one end of the telescopic part 24 extends outside the housing 10 and is connected to the front handle bar 30. Thus, when the telescopic part 24 moves telescopically outside the fixed part 23, the front handle bar 30 can move back and forth relative to the housing 10 following the telescopic part 24.

[0038] In this embodiment, the box 10 is also provided with a baffle 14, and the baffle 14 has an opening 141. The opening 141 has a cylindrical structure and penetrates the wall of the baffle 14. The opening 141 connects the inside and outside of the box 10. The telescopic part 24 is inserted into the opening 141 and is slidably arranged. The inner contour of the opening 141 is adapted to the outer contour of the telescopic part 24. The opening 141, which has a cylindrical structure, provides support for the telescopic part 24, so that the telescopic part 24 can extend and retract stably and accurately.

[0039] Please see Figure 5 , Figure 7 , Figure 8 The telescopic part 24 has a hollow shell structure. Two matching grooves 244 are provided symmetrically on opposite side walls of the telescopic part 244. Meanwhile, the inner wall of the opening 141 has a protrusion (not shown in the figure) that matches the matching groove 244. By matching the matching groove 244 with the protrusion, the contact area between the telescopic part 24 and the baffle 14 is increased, ensuring stable movement.

[0040] In this embodiment, a reinforcing rib 241 is provided in the internal cavity of the telescopic part 24. The reinforcing rib 241 is horizontally arranged between two mating grooves 244 to ensure the structural strength of the telescopic part 24, optimize the contact stress points of the telescopic part 24, and ensure stability in use. At the same time, the reinforcing rib 241 divides the internal cavity of the telescopic part 24 into an upper cavity and a lower cavity (not shown in the figure). The upper cavity is used to insert wires for easy connection, and the fixing part 23 is arranged in the lower cavity. By setting the upper and lower cavities that are separated from each other, the standardization of wiring is improved and installation is facilitated.

[0041] Furthermore, the telescopic assembly 20 also includes a fixed base 21 mounted on the inner wall of the housing 10. The fixed base 21 is equipped with a drive motor 22 and a rotatably mounted lead screw 26. The lead screw 26 is connected to the output shaft of the drive motor 22, thereby driving the lead screw 26 to rotate using the drive motor 22. The end of the fixed part 23 is detachably connected to the fixed base 21 using fasteners such as bolts or screws. The fixed part 23 has a shell-like structure with one open side. The lead screw 26 is placed at the open side of the fixed part 23 and is parallel to the fixed part 23. A slider 25 is threadedly connected to the lead screw 26. The slider 25 is partially sleeved on the fixed part 23 and can be slidably arranged along the extension direction of the fixed part 23. The telescopic part 24 is detachably connected to the slider 25. Thus, when the lead screw 26 rotates, the slider 25 moves along the extension direction of the fixed part 23, thereby realizing the forward and backward extension of the telescopic part 24.

[0042] Specifically, please refer to Figure 5 , Figure 6 , Figure 8 The slider 25 has a through groove 252 that penetrates two opposite sides of the slider 25. The fixing part 23 is inserted into the through groove 252, so that the slider 25 can be fitted onto the fixing part 23 and slide along the extension direction of the fixing part 23. The wall of the slider 25 has a mating hole 251. The lead screw 26 is screwed into the mating hole 251 and threadedly connected to the slider 25. The thickness of the slider 25 near the mating hole 251 is greater than the thickness near the through groove 252. Thus, when the lead screw 26 rotates, it can drive the slider 25 to slide. The slider 25 has a U-shaped insertion port 253 located in the through groove 252. The U-shaped insertion port 253 extends from one wall of the through groove 252 to the other wall, dividing the through groove 252 into a receiving groove 2521 and a mating groove 2522.

[0043] Please see Figures 7-11The fixing part 23 includes a first sidewall 231 and a second sidewall 232 located on adjacent sides of the opening surface. The first sidewall 231 is inserted into the receiving groove 2521, and the second sidewall 232 is inserted into the mating groove 2522. Preferably, the outer contours of the first sidewall 231 and the second sidewall 232 are irregular. The outer contour of the first sidewall 231 is adapted to the inner wall contour of the receiving groove 2521, and the outer contour of the second sidewall 232 is adapted to the inner wall contour of the mating groove 2522. In this way, the pressure is dispersed by the irregular sidewalls on both sides, reducing the pressure on the contact surface, preventing movement and displacement, and improving the stability of use.

[0044] The inner wall of the fixing part 23 is also provided with an insert 233, which is located between the first side wall 231 and the second side wall 232. The insert 233 is inserted into the U-shaped socket 253, and the insertion 233 and the U-shaped socket 253 cooperate to separate the receiving groove 2521 and the mating groove 2522. At the same time, a gap is left between the first side wall 231 and the second side wall 232 and the insert 233 or the U-shaped socket 253.

[0045] In operation, when one side of the slider 25 is subjected to force, the slider 25 will press tightly against the first side wall 231 or the second side wall 232. Since the fixing part 23 has an open surface, the first side wall 231 and the second side wall 232 will approach each other under the action of external force, that is, they will be subjected to pressure and deform, resulting in increased friction. Therefore, in this application, the slider 25 is partially disposed at the open surface of the fixing part 23, and the insert 233 and the U-shaped insert 253 are used to make the receiving groove 2521 and the mating groove 2522 mutually... Independently, when either the receiving groove 2521 or the mating groove 2522 is subjected to force, the insertion strip 233 and the U-shaped insertion port 253 can reduce deformation transmission and play a buffering role. At the same time, the receiving groove 2521 and the mating groove 2522 also provide deformation space for the slider 25, preventing the contact area between the through groove 252 and the U-shaped insertion port 253 on the slider 25 and the fixing part 23 from increasing, and preventing the slider 25 from excessively pressing the fixing part 23, thereby reducing friction, reducing the impact of deformation, and improving the sliding effect.

[0046] Compared with the prior art, this application sets the fixing part 23 as a shell structure with one side open, thereby reducing the overall weight of the telescopic component 20. At the same time, the slider 25 is used to ensure the structural strength of the connection between the fixing part 23 and the telescopic part 24. In particular, the maximum diameter / thickness of the slider 25 is set at the opening of the fixing part 23. While retaining the deformation space, the structural strength of the fixing part 23 is improved, thereby improving the stability of the application.

[0047] Please see Figure 6 , Figure 8 , Figure 12 , Figure 13 , Figure 14 A mounting strip 234 is fitted inside the first sidewall 231 of the fixing part 23. Limit switches 235 are respectively provided at both ends of the mounting strip 234. The slider 25 is located between the two limit switches 235, with the limit switches 235 facing the U-shaped socket 253. The sidewall of the U-shaped socket 253 can abut against the contacts of the limit switches 235. In use, the limit switches 235 can be inserted into the receiving groove 2521 on the slider 25. The receiving groove 2521 provides a cavity for the limit switches 235 and other components, preventing interference. Simultaneously, the sidewall of the U-shaped socket 253 abuts against the contacts of the limit switches 235. By controlling the movement of the slider 25 between the two limit switches 235, precise control of the slider 25's stroke is achieved. In this embodiment, the U-shaped socket 253, located inside the through slot 252, not only separates the through slot 252 and reduces the impact of external forces on the slider 25 as a whole, but also, due to its internal location, has minimal deformation impact. Therefore, by using the side wall of the U-shaped socket 253 to push against the contact of the limit switch 235, the stroke of the slider 25 can be controlled more accurately. In use, when the side wall of the U-shaped socket 253 abuts against the contact of the limit switch 235, the drive motor 22 stops rotating, and the telescopic part 24 reaches its limit position.

[0048] Understandably, the contacts of the limit switch 235 are common micro switches that are triggered by impact to start and stop. When the side wall of the U-shaped socket 253 contacts (or separates from) the contacts of the limit switch 235, the micro switch is turned on (or off), thereby switching the circuit.

[0049] The telescopic part 24 is provided with a locking hole 243, and a locking member 29 is connected to the locking hole 243. One end of the locking member 29 penetrates the wall of the telescopic part 24 and extends into the side wall of the slider 25, thereby fixing the telescopic part 24 and the slider 25 together. This allows the telescopic part 24 to move synchronously with the slider 25. In this embodiment, the wall thickness of the slider 25 opposite to the locking hole 243 is greater than the wall thickness of the slider 25 away from the locking hole 243, thereby ensuring the stability of the connection of the locking member 29. Preferably, the locking member 29 is a bolt. The slider 25 is provided with a through hole (not shown in the figure) for engaging the locking member 29.

[0050] In use, the lead screw 26 rotates, and the slider 25 located on the lead screw 26 moves along the extension direction of the fixed part 23 under the constraint of the fixed part 23. When the lead screw 26 rotates clockwise, the slider 25 moves toward one end of the fixed part 23 and abuts against a limit switch 235. When the lead screw 26 rotates counterclockwise, the slider 25 moves toward the other end of the fixed part 23 and abuts against another limit switch 235, completing the reciprocating movement. During the movement of the slider 25, the telescopic part 24 moves accordingly, thereby realizing the control of the extension and retraction of the telescopic part 24.

[0051] In this embodiment, the slider 25 is made of nylon, which has self-lubricating properties and improves the sliding effect; at the same time, the lead screw 26 is a multi-start screw, which is used to increase the lead and further increase the moving speed of the slider 25.

[0052] Please refer to it again. Figure 5 , Figure 7 , Figure 8 , Figure 9 , Figure 12 The lead screw 26 is located between the drive motor 22 and the fixing part 23. A baffle 236 is provided on the side of the lead screw 26 away from the fixing part 23, facing the opening of the fixing part 23. The baffle 236 has an arc-shaped structure to collect lubricating oil or dust and prevent lubricating oil from overflowing. An end cap 28 is plugged into the end of the fixing part 23 away from the fixing seat 21. One end of the baffle 236 is plugged into the fixing seat 21, and the other end is plugged into the end cap 28 for easy replacement and maintenance. The baffle 236 is made of plastic to reduce weight. Furthermore, this application utilizes the hollow fixing part 23 and the telescopic part 24 to greatly reduce the weight of the telescopic assembly 20, thereby reducing the overall weight of the electric luggage and improving usability. The materials of the fixing part 23 and the telescopic part 24 include, but are not limited to, aluminum alloy and carbon fiber.

[0053] In this embodiment, the surface of the telescopic part 24 facing the drive motor 22 has a concave surface 242, and a gap is left between the concave surface 242 and the drive motor 22, thereby making the structure of the telescopic part 24 more compact and ensuring its stability in use. The concave surface 242 serves two purposes: firstly, it adapts to the shape and size of the drive motor 22 to avoid interference with the drive motor 22; secondly, it effectively avoids the avoidance gap design in the prior art to avoid the drive motor 22, improving the structural integrity of the telescopic part 24 and thus ensuring its structural strength.

[0054] In this embodiment, the drive motor 22 and the limit switch 235 are both connected to the controller 12 to achieve electric control.

[0055] In this embodiment, the telescopic part 24 encloses the fixing part 23, the lead screw 26, and the baffle 236 in the lower cavity to reduce dust from entering the interior of the fixing part 23, improve the stability of use, and further reduce the volume of the telescopic assembly 20.

[0056] The specific operation method of this application is as follows: The user can sit on the upper part of the housing 10, start the drive motor 22 to drive the lead screw 26 to rotate. When the lead screw 26 rotates forward, the slider 25 moves toward one end of the fixed part 23 and abuts against a limit switch 235. The telescopic part 24 moves accordingly to control the extension of the front handle bar 30. When the lead screw 26 rotates in reverse, the slider 25 moves toward the other end of the fixed part 23 and abuts against another limit switch 235. The telescopic part 24 moves accordingly to control the retraction of the front handle bar 30.

[0057] This application optimizes the structure of the telescopic component 20 by using lightweight plastic for some parts and making both the fixing part 23 and the telescopic part 24 hollow. Compared to the heavier telescopic rods in the prior art, this application significantly reduces the weight of the telescopic component 20, thereby reducing the overall weight of the electric luggage and improving usability. Furthermore, the structural optimization allows for a smaller overall size of the telescopic component 20, reducing the space it occupies inside the luggage body 10. This application also optimizes the structure of the slider 25 within the telescopic component 20, improving the connection strength between it and the fixing part 23, ensuring stability during use, enhancing resistance to deformation, and further reducing weight.

[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 trolley bag comprising a bag body, a front handle bar provided outside the bag body, and a telescopic assembly provided inside the bag body, characterized in that, The telescopic assembly comprises a fixed seat, a fixed part and a screw rod arranged on the fixed seat, a sliding block sleeved on the fixed part and the screw rod, and a telescopic part sleeved outside the fixed part, the screw rod drives the sliding block to slide along the extension direction of the fixed part, the telescopic part is connected with the sliding block, the telescopic part protrudes out of the box body and is connected with the front handle rod, a through slot and a matching hole are arranged on the sliding block, the fixed part is matched and inserted into the through slot, and the matching hole is threadedly connected with the screw rod.

2. The motorized luggage of claim 1, wherein, The fixed part is in a shell-shaped structure with one open face, and the screw rod is arranged at the open face of the fixed part and parallel to the fixed part.

3. The motorized luggage of claim 2, wherein, The thickness of the sliding block on the side close to the matching hole is greater than the thickness on the side close to the through slot.

4. The motorized luggage of claim 1, wherein, A U-shaped socket is arranged in the through slot, the U-shaped socket extends from one wall body of the through slot to the other wall body, and the U-shaped socket divides the through slot into a containing groove and a matching groove; the fixed part comprises first and second side walls located on two adjacent sides of the open face, the first side wall is matched and inserted into the containing groove, and the second side wall is matched and inserted into the matching groove.

5. The motorized luggage of claim 4, wherein, An insertion strip is further arranged on the inner wall of the fixed part, the insertion strip is located between the first and second side walls, the insertion strip is matched and inserted into the U-shaped socket, and the insertion strip cooperates with the U-shaped socket to separate the containing groove and the matching groove from each other.

6. The motorized luggage of claim 4, wherein, A placement strip is matched and connected in the first side wall of the fixed part, two ends of the placement strip are respectively provided with travel switches, the sliding block is located between the two travel switches, the travel switches are opposite to the U-shaped socket, and the side wall of the U-shaped socket can abut against the travel switches.

7. The motorized luggage of claim 1, wherein, The telescopic part is in a hollow shell-shaped structure, a locking hole is arranged on the telescopic part, a locking piece is matched and connected in the locking hole, and one end of the locking piece penetrates through the wall body of the telescopic part and extends into the side wall of the sliding block.

8. The motorized luggage of claim 4, wherein, The outer contour of the first and second side walls is irregular, the outer contour of the first side wall is matched with the inner wall contour of the containing groove, and the outer contour of the second side wall is matched with the inner wall contour of the matching groove.

9. The motorized luggage of claim 2, wherein, The fixed seat is arranged in the box body, a driving motor is arranged on the fixed seat, the screw rod is connected with the output shaft of the driving motor, the screw rod is located between the driving motor and the fixed part, one face of the screw rod away from the fixed part is provided with a blocking strip, the blocking strip is opposite to the open face of the fixed part, and the blocking strip is made of plastic.

10. The motorized luggage of claim 9, wherein, An end cover is plug-connected to one end of the fixed part away from the fixed seat, one end of the blocking strip is plug-connected to the fixed seat, and the other end of the blocking strip is plug-connected in the end cover.

11. The motorized luggage of claim 9, wherein, The face of the telescopic part facing the driving motor is formed with a concave face, a gap is left between the concave face and the driving motor, and the telescopic part wraps the fixed part, the screw rod and the blocking strip in the internal cavity of the telescopic part.

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