A universal wheel mechanism, a steering wheel assembly and an electric luggage

Abstract

The application provides a universal wheel mechanism, a steering wheel assembly and an electric luggage. The universal wheel mechanism comprises: a rotating shaft; a connecting shaft rotatably arranged at one end of the rotating shaft through a sleeve structure; an end surface of the sleeve structure comprises two symmetrical first guide surfaces, one end of the two first guide surfaces is connected to form a first positioning groove, and the other end is connected to form a first positioning protrusion; a positioning sleeve has a first position and a second position in the axial direction of the rotating shaft, one end of the positioning sleeve is formed with two symmetrical second guide surfaces, the shape of the second guide surface corresponds to that of the first guide surface, one end of the second guide surface is connected to form a second positioning groove, and the other end is connected to form a second positioning protrusion; when the positioning sleeve is located at the first position, the sleeve structure is prevented from rotating relative to the rotating shaft; when the positioning sleeve is located at the second position, the sleeve structure is freely rotatable relative to the rotating shaft, so that the wheel is switched between the directional wheel and the universal wheel. The stability during riding and pushing of the electric luggage and the flexibility during turning when pushing are ensured.

Description

Technical Field

[0001] This application relates to the field of luggage technology, and in particular to a universal wheel mechanism, a steering wheel assembly, and an electric luggage. Background Technology

[0002] Currently, electric suitcases can generally be ridden or pushed like regular suitcases. Regular suitcases, to ensure stability and maneuverability, typically have four wheels, all of which are swivel wheels. However, electric suitcases usually have drive wheels at the rear, so the two rear wheels are fixed wheels. The front wheel of an electric suitcase is generally connected to a handlebar to achieve steering; to ensure accurate steering control while riding, the front wheel is also a fixed wheel.

[0003] In the existing technology, some electric luggage boxes have two directional wheels on the front wheel to ensure stability when riding and pushing, but this affects the flexibility of turning when pushing; some electric luggage boxes have only one directional wheel on the front wheel to ensure flexibility of turning when pushing, but this affects the stability of riding and pushing the electric luggage box.

[0004] It is evident that the front wheels of existing electric luggage compartments cannot simultaneously achieve both stability and maneuverability when turning while pushing. Summary of the Invention

[0005] This application provides a universal wheel mechanism, a steering wheel assembly, and an electric luggage box to solve the technical problem in the prior art that the front wheels of electric luggage boxes cannot simultaneously achieve both stability and turning flexibility when pushing.

[0006] To address the aforementioned problems, this application provides a universal wheel mechanism. include: Shaft; A connecting shaft has one end for connecting a wheel and the other end for forming a sleeve structure, which is rotatably mounted on one end of the shaft. The end face of the sleeve structure includes two symmetrical first guide surfaces, each first guide surface including at least two helical surfaces. Adjacent helical surfaces are connected by an abutting plane, which extends along the axial direction of the connecting shaft. The two first guide surfaces are connected at one end to form a first positioning groove and at the other end to form a first positioning protrusion. A positioning sleeve is fitted onto the rotating shaft and has a first position and a second position in the axial direction of the rotating shaft. The end of the positioning sleeve facing the connecting shaft has two symmetrical second guide surfaces. The shape of the second guide surface corresponds to the first guide surface. One end of the second guide surface is connected to form a second positioning groove, and the other end is connected to form a second positioning protrusion. When the positioning sleeve is in the first position, the first positioning groove engages with the second positioning protrusion, and the first positioning protrusion engages with the second positioning groove to prevent the sleeve structure from rotating relative to the rotating shaft; When the positioning sleeve is in the second position, the second positioning protrusion is located on the side of the first positioning protrusion away from the first positioning groove in the axial direction of the rotating shaft.

[0007] In some embodiments, the first guide surface includes three helical surfaces and two abutment planes.

[0008] In some embodiments, the second guide surface is formed on the inner circumferential surface of the positioning sleeve; When the positioning sleeve is in the first position, it is fitted onto the outer periphery of the sleeve structure.

[0009] In some embodiments, a stop surface is formed on the inner circumference of the positioning sleeve, and the stop surface is disposed away from the second guide surface; The caster wheel mechanism also includes: A linear bearing is sleeved on the rotating shaft and disposed inside the positioning sleeve, with the abutting surface facing one end of the linear bearing; A stopper is disposed at the end of the linear bearing away from the stopper surface. The stopper surface and the stopper are used to restrict the position of the linear bearing relative to the positioning sleeve in the axial direction of the positioning sleeve.

[0010] In some embodiments, the abutment is located at one end of the positioning sleeve opposite to the connecting shaft; The caster wheel mechanism also includes: A planar bearing is sleeved on the rotating shaft, and one end face of the planar bearing abuts against the abutment; A positioning elastic element is sleeved on the rotating shaft to push the positioning sleeve to the first position, and the other end face of the planar bearing abuts against the positioning elastic element.

[0011] This application also provides a steering wheel assembly, including: Two of any of the omnidirectional wheel mechanisms described above are provided; The steering connecting rod is hinged at both ends to the positioning sleeves in the two universal wheel mechanisms. The steering connecting rod is used to drive the two positioning sleeves to rotate synchronously, so as to drive the wheels connected to the two universal wheel mechanisms to rotate synchronously.

[0012] In some embodiments, both ends of the steering connecting rod are provided with connecting holes, and a hinge rod is slidably connected in the connecting holes, the hinge rod being connected to the positioning sleeve.

[0013] In some embodiments, the steering wheel assembly further includes: The positioning connecting rod is rotatably connected to the two positioning sleeves at both ends, and is used to drive the two positioning sleeves to move synchronously between the first position and the second position.

[0014] This application also provides an electric suitcase, comprising: Box; Two drive wheels are provided and are located at the rear end of the box body along the driving direction of the electric luggage box; Any of the steering wheel assemblies described above is disposed at the front end of the box body along the travel direction of the electric luggage box.

[0015] The beneficial effects of the embodiments of this application are as follows: The universal wheel mechanism provided by this application forms a sleeve structure at one end of the connecting shaft, and forms a first positioning groove and a first positioning protrusion at one end of the sleeve structure. A positioning sleeve is also provided, and a second positioning protrusion and a second positioning groove that cooperate with the first positioning groove are formed on the positioning sleeve. Thus, when the first positioning groove and the second positioning protrusion cooperate, and simultaneously when the first positioning protrusion and the second positioning groove cooperate, the sleeve structure can be prevented from rotating relative to the shaft. After disengagement, the sleeve structure can rotate freely relative to the shaft, thereby realizing the switching between a fixed wheel and a universal wheel. This universal wheel mechanism can be used as the front wheel of an electric suitcase, and the electric suitcase has two front wheels. When the electric suitcase is in a rideable state, the two front wheels are fixed wheels; when the electric suitcase is in a normal suitcase state, the two front wheels are universal wheels. This ensures the stability of the electric suitcase when riding and pushing, while also ensuring the flexibility of turning when pushing. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the structure of an electric luggage box in a non-riding state according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of an electric luggage compartment with the steering lever extended, according to an embodiment of this application. Figure 3 This is a schematic diagram of the structure of an electric luggage box in a rideable state according to an embodiment of this application; Figure 4 This is a front view of the handle assembly provided in one embodiment of this application after the handle is folded relative to the mounting base; Figure 5 This is an exploded view of a handle assembly provided in one embodiment of this application; Figure 6 This is a schematic diagram of the structure of the positioning block and the drive button in the handle assembly provided in one embodiment of this application; Figure 7 This is a schematic diagram of the structure of the positioning block and the mounting base cooperating in a handle assembly according to an embodiment of this application; Figure 8 This is a schematic diagram of the structure of the drive button in a handle assembly provided in an embodiment of this application; Figure 9 This is a schematic diagram of the structure of a steering rod assembly provided in an embodiment of this application; Figure 10 This is an exploded view of a steering rod assembly provided in one embodiment of this application; Figure 11 This is a schematic diagram of the structure of the wedge block and the steering rod in a steering rod assembly provided in an embodiment of this application; Figure 12 This is a schematic diagram of the steering device provided in one embodiment of this application; Figure 13 This is a schematic diagram of the steering device provided in one embodiment of this application within the housing; Figure 14 yes Figure 13 Enlarged view of point A in the middle; Figure 15 This is a first-view structural schematic diagram of a steering wheel assembly provided in an embodiment of this application; Figure 16 This is a structural schematic diagram of a steering wheel assembly provided in an embodiment of this application from a second perspective; Figure 17 This is a schematic diagram of the structure of the universal wheel mechanism provided in an embodiment of this application when the positioning sleeve is in the first position; Figure 18 This is an exploded view of a universal wheel mechanism provided in an embodiment of this application; Figure 19 This is a cross-sectional view of the omnidirectional wheel mechanism provided in an embodiment of this application when the positioning sleeve is in the first position; Figure 20 This is a cross-sectional view of the omnidirectional wheel mechanism provided in an embodiment of this application when the positioning sleeve is in the second position; Figure 21 This is a schematic diagram of the connecting shaft in a universal wheel mechanism provided in an embodiment of this application; Figure 22 This is a cross-sectional view of a positioning sleeve provided in an embodiment of this application; Figure 23 This is a schematic diagram of the structure of the linkage assembly provided in one embodiment of the present application, in which the linkage rod cooperates with the steering rod and the positioning connecting rod; Figure 24 This is a schematic diagram of the linkage rod in a linkage assembly provided in an embodiment of this application; Figure 25 This is a schematic diagram of the foot pedal of an electric suitcase provided in one embodiment of this application; Figure 26 This is a schematic diagram of the foot pedal of an electric suitcase provided in another embodiment of this application; Figure 27 This is a partial cross-sectional view of a tie rod provided in another embodiment of this application.

[0017] In the picture: 100, electric suitcase; 10, suitcase body; 11, handle storage cavity; 12, opening; 13, rounded corners; 20. Handle assembly; 21. Handle; 211. Connecting end; 212. Positioning groove; 213. Arc-shaped guide surface; 22. Mounting base; 221. Filling surface; 23. Positioning block; 231. Positioning protrusion; 232. Guide slope; 233. Guide protrusion; 24. First elastic element; 25. Drive button; 251. Drive slope; 252. Guide groove; 30. Steering rod assembly; 31. Steering rod; 311. Wiring channel; 312. Guide rib; 32. Telescopic positioning mechanism; 321. Mounting block; 322. Positioning pin; 323. Wedge block; 323a. Notch groove; 323b. Arc-shaped guide edge; 324. Return spring; 325. Telescopic drive rod; 33. Telescopic button; 34. Extending elastic element; 35. Outer sleeve; 40. Steering wheel assembly; 41. Universal wheel mechanism; 411. Rotating shaft; 412. Connecting shaft; 412a. Sleeve structure; 412b. First guide surface; 412c. Helical surface; 412d. Abutting plane; 412e. First positioning groove; 412f. First positioning protrusion; 413. Positioning sleeve; 413a. Second guide surface; 413b. Second positioning groove; 413c. Second positioning protrusion; 413d. Abutting surface; 414. Linear bearing; 415. Abutting component; 416. Positioning elastic component; 417. Planar bearing; 418. Limiting flange; 42. Positioning connecting rod; 421. C-shaped engaging part; 43. Steering connecting rod; 431. Angle limiting structure; 44. Hinge rod; 45. Drive connecting component; 451. Hall sensor; 50. Linkage component; 51. Base; 52. Linkage rod; 521. Abutment surface; 522. Abutment post; 61. Foot pedal; 621. First rack; 622. Second rack; 623. Linkage gear; 631. First connecting rod; 632. Second connecting rod; 633. Intermediate connecting rod; 70. Pull rod; 71. Assist push button; 721. Spiral segment; 722. Straight segment; 81. Front wheel; 82. Rear wheel. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It is understood that the specific embodiments described herein are only for explaining this application and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings, not all structures. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0019] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. 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, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0022] like Figure 1 and Figure 12 As shown, this application embodiment provides an electric luggage case 100. It can be understood that the electric luggage case 100 generally includes a case body 10, a front wheel 81, a rear wheel 82, a handle assembly 20, and a steering lever assembly 30, with at least one of the front wheel 81 and the rear wheel 82 being a drive wheel. The front wheel 81 and the rear wheel 82 are respectively located at the front and rear ends of the bottom of the case body 10; one end of the steering lever assembly 30 is connected to the front wheel 81, and the other end is connected to the handle assembly 20, so that the user can control the steering lever assembly 30 to change the direction of travel by using the handle assembly 20 while riding. It should be noted that in this application embodiment, terms related to location such as front wheel 81, rear wheel 82, upper surface, and bottom are used to describe the electric luggage case 100 in its riding state. Furthermore, there are two front wheels 81 and two rear wheels 82, with the two front wheels 81 being steering wheels and the two rear wheels 82 being drive wheels.

[0023] like Figures 1 to 3 As shown, in some embodiments, the body 10 of the electric luggage case 100 forms a handle storage cavity 11. An opening 12 of the handle storage cavity 11 is formed on the surface of the body 10. A handle assembly 20 is retractably mounted on the body 10. The handle assembly 20 includes a mounting base 22 and two handles 21. The mounting base 22 has a filling surface 221, the edge contour of which matches the edge contour of the opening 12. The two handles 21 are respectively disposed at opposite ends of the mounting base 22, and both handles 21 are foldable relative to the mounting base 22. After folding relative to the mounting base 22, the orthographic projection of the handle 21 in the horizontal plane lies within the orthographic projection area of ​​the filling surface 221 in the horizontal plane, so that the handle assembly 20, after folding, can be inserted into the handle storage cavity 11 through the opening 12. After the handle assembly 20 is inserted into the handle storage cavity 11, the filling surface 221 smoothly connects with the surface of the body 10 at the edge of the opening 12 to fill the opening 12.

[0024] In the riding direction of the electric luggage case 100, the handle assembly 20 is located at the front end of the case body 10. For example, the handle assembly 20 can be retractably mounted on the front end of the upper side of the case body 10, in which case the handle assembly 20 can be retracted vertically; of course, the handle assembly 20 can also be retractably mounted on the upper end of the front side of the case body 10, in which case the handle assembly 20 can be retracted in the front-rear direction; however, the retractable mounting method of the handle assembly 20 on the case body 10 is not limited to these. Figure 2 and Figure 3As shown, in this embodiment, the handle assembly 20 is vertically extendable and retractable at the front end of the upper side of the housing 10. Correspondingly, the handle storage cavity 11 is a recessed groove formed at the front end of the upper side of the housing 10, and the opening 12 of the handle storage cavity 11 is formed on the upper surface of the housing 10. The cross-sectional shape of the storage cavity in the horizontal direction can correspond to the shape of the orthographic projection of the filling surface 221 in the horizontal plane. For example, the cross-sectional shape of the storage cavity in the horizontal direction can be rectangular, circular, or elliptical, but is not limited thereto; in this embodiment, a rectangle is used as an example.

[0025] like Figures 1 to 3 As shown, in some embodiments, the upper surface of the case 10 is connected to the side surface at opposite ends in the direction of movement of the electric luggage case 100 via rounded corner surfaces 13, that is, the front and rear ends of the upper surface of the case 10 have rounded corner surfaces 13 that connect with the corresponding side surfaces. The opening 12 of the handle storage cavity 11 is opened on the rounded corner surface 13 at the front end of the upper surface. Correspondingly, in order to ensure that the edge contour of the filling surface 221 matches the edge contour of the opening 12, and that after the handle assembly 20 is stored, the filling surface 221 and the surface of the case 10 at the edge of the opening 12 are smoothly connected, the filling surface 221 is an arc surface, and the radius of curvature of the filling surface 221 is the same as the radius of curvature of the rounded corner surface 13.

[0026] It is understandable that the front and rear ends of the upper surface of the box 10 have rounded corner surfaces 13 that connect with the corresponding sides, which can protect safety and improve the structural strength of the box 10. By opening the handle storage cavity 11 on the rounded corner surface 13 at the front end of the upper surface of the box 10, it is equivalent to moving the handle assembly 20, the steering rod assembly 30, and the front wheel 81 as far forward as possible. With the size of the box 10 unchanged, on the one hand, it can provide more space for the user to sit, and on the other hand, it can increase the wheelbase between the front wheel 81 and the rear wheel 82, ensuring the stability of the electric luggage box 100. In addition, the filling surface 221 of the mounting base 22 is also an arc surface. After the handle assembly 20 is stored, this arc surface can fill the opening 12. When the handle assembly 20 is used after extending from the handle storage cavity 11, this arc surface can be used to reduce the sharp edges of the mounting base 22.

[0027] like Figures 2 to 5 As shown, in some embodiments, the mounting base 22 can be a quarter-cylinder structure, but it is not limited to this. In this embodiment, the mounting base 22 is described as a quarter-cylinder structure. Along the axial direction of the arc surface, the mounting base 22 has two fan-shaped end faces perpendicular to the axis, and a rear side and a lower side parallel to the axis. Two handles 21 are foldable and disposed on the two fan-shaped end faces. The rear side of the mounting base 22 faces the rear end of the upper surface of the housing 10. The lower side of the mounting base 22 faces the handle storage cavity 11.

[0028] The edge contour of the filling surface 221 of the mounting base 22 in the handle assembly 20 matches the edge contour of the opening 12, and the handle storage cavity 11 extends vertically. Therefore, when the handle 21 is folded relative to the mounting base 22, its orthographic projection in the horizontal plane is located within the orthographic projection area of ​​the filling surface 221 in the horizontal plane. After the handle 21 is folded relative to the mounting base 22, the handle assembly 20 can be inserted into the handle storage cavity 11 from the opening 12.

[0029] The two handles 21 can be foldably disposed relative to the mounting base 22 in a manner that allows them to be rotatably disposed at opposite ends of the mounting base 22, or retractably disposed at opposite ends of the mounting base 22, but are not limited thereto. In some embodiments, the two handles 21 are respectively rotatably disposed at opposite ends of the mounting base 22, and the handles 21 have a first position and a second position relative to the mounting base 22. For example... Figure 3 As shown, when the handles are in the first position relative to the mounting base 22, the two handles are located on opposite sides of the mounting base 22; Figure 2 As shown, when the handlebars 21 are in the second position relative to the mounting base 22, both handlebars 21 are located on the side of the mounting base 22 facing the handlebar storage cavity 11. That is, when the user needs to ride, the handlebars 21 are rotated to the first position, at which time both handlebars 21 are in a horizontally extended state, as shown. Figure 3 As shown; when the handle assembly 20 needs to be stored, the handle 21 is rotated to the second position. At this time, both handles 21 are in a vertically extended state and located on one side of the lower side of the mounting base 22, as shown. Figure 2 As shown.

[0030] One end of the handle 21 that is rotatably connected to the mounting base 22 may be provided with a connecting end 211, which has a rotating shaft hole. The mounting base 22 is provided with a rotating shaft, so that the handle 21 is sleeved on the rotating shaft through the rotating shaft hole of the connecting end 211, thereby achieving a rotatable setting on the mounting base 22. However, the specific rotatable setting of the handle 21 on the mounting base 22 is not limited to this.

[0031] To ensure that handle 21 can be stably in the first position, such as Figure 5As shown, in some embodiments, two positioning blocks 23 are slidably disposed within the mounting base 22. Each positioning block 23 corresponds to a handle 21, and the positioning block 23 is used to position the handle 21 in a first position. One of the positioning blocks 23 and the handle 21 is provided with a positioning groove 212, and the other is provided with a positioning protrusion 231 that cooperates with the positioning groove 212. Taking the positioning block 23 having a positioning protrusion 231 and the handle 21 having a positioning groove 212 as an example, the positioning groove 212 can be provided at the handle connection end 211. For example, the positioning protrusion 231 can be a cylindrical protrusion, and correspondingly, the positioning groove 212 can be a cylindrical groove. The ends of the two positioning blocks 23 facing away from their corresponding handles 21 are each connected to a first elastic member 24, which is used to push the positioning blocks 23 toward the handle 21 so that the positioning groove 212 cooperates with the positioning protrusion 231. For example, the first elastic element 24 can be a spring or an elastic rubber element, but it is not limited to this. In this embodiment, the first elastic element 24 is a spring as an example for illustration.

[0032] The sliding direction of the two positioning blocks 23 within the mounting base 22 can be along the axial direction of the rotation of the handle 21 relative to the mounting base 22, or it can be perpendicular to the axial direction of the rotation of the handle 21 relative to the mounting base 22. For example, as Figures 5 to 7 As shown, in some embodiments, two positioning blocks 23 are arranged opposite each other at one end of their corresponding handle 21, and the opposite ends of the two positioning blocks 23 are connected by a first elastic member 24. At this time, the sliding direction of the two positioning blocks 23 is perpendicular to the axial direction of the rotation of the handle 21 relative to the mounting base 22, and is located between the connecting ends 211 of the two handles 21. The opposite ends of the two positioning blocks 23 are connected by the first elastic member 24, that is, the two positioning blocks 23 are respectively connected to both ends of the first elastic member 24. The relative sliding of the two positioning blocks 23 can disengage the positioning groove 212 from the positioning protrusion 231, while simultaneously compressing the first elastic member 24; the release of elastic potential energy by the first elastic member 24 can push the two positioning blocks 23 to slide back-to-back, thereby allowing the positioning protrusion 231 to engage with the positioning groove 212. By connecting the opposite ends of the two positioning blocks 23 through the first elastic member 24, compared to each positioning block 23 being connected to a first elastic member 24, the overall structure of the handle assembly 20 is simplified, and the functions of the components are fully utilized.

[0033] like Figure 5 As shown, in some embodiments, the connecting end 211 may also be provided with an arc-shaped guide surface 213, and the positioning groove 212 is provided on the arc-shaped guide surface 213. When it is necessary to rotate the handle 21 from the second position to the first position, the handle 21 is rotated upward, and the positioning protrusion 231 cooperates with the positioning groove 212 under the push of the first elastic member 24 and the guidance of the arc-shaped guide surface 213.

[0034] When it is necessary to fold the handle 2, the engagement between the positioning groove 212 and the positioning protrusion 231 must first be disengaged. This can be understood as simply moving the two positioning blocks 23 in opposite directions. Figures 5 to 8 As shown, in some embodiments, the positioning block 23 is provided with a guide slope 232. The inclination directions of the guide slopes 232 on the two positioning blocks 23 are symmetrically arranged. Meanwhile, the handle assembly 20 also includes a drive button 25. The drive button 25 is slidably disposed on the mounting base 22. The sliding direction of the drive button 25 on the mounting base 22 is perpendicular to the sliding direction of the positioning block 23 on the mounting base 22. Two drive slopes 251 are symmetrically arranged on the drive button 25. The two drive slopes 251 are used to cooperate with the two guide slopes 232 respectively to drive the two positioning blocks 23 to move towards each other, causing the positioning groove 212 and the positioning protrusion 231 to disengage. For example, as... Figure 5 As shown, the guide slope 232 can be located at the upper end of the side of the positioning block 23 facing away from the first elastic member 24, and the guide slope 232 is inclined towards the first elastic member 24. The drive button 25 can be slidably arranged in the vertical direction. To ensure the stability of the relative sliding of the drive slope 251 and the guide slope 232, the drive button 25 can also be provided with a guide groove 252, and the positioning block 23 is provided with a guide protrusion 233 that cooperates with the guide groove 252. When the guide slope 232 moves relative to the drive slope 251, the guide protrusion 233 slides relative to the guide groove 252.

[0035] It should be noted that, since there is friction between the rotating shaft hole and the rotating shaft, as well as between the arc-shaped guide surface 213 and the positioning protrusion 231, after the positioning protrusion 231 disengages from the positioning groove 212, in order to ensure that the handle 21 can rotate smoothly from the first position to the second position, a torsion spring can also be provided between the handle 21 and the mounting base 22. After the positioning protrusion 231 disengages from the positioning groove 212, the torsion spring can release its elastic potential energy to push the handle 21 to rotate to the second position.

[0036] The handle assembly 20 is retractably mounted on the housing 10, and is connected to the steering rod assembly 30, so that the extension and retraction of the steering rod 31 in the steering rod assembly 30 can drive the handle assembly 20 to extend and retract on the housing 10. Figure 9 , Figure 10 and Figure 12 As shown, in some embodiments, the steering lever assembly 30 includes a steering lever 31, a telescopic positioning mechanism 32, a telescopic button 33, and an extension elastic member 34.

[0037] One end of the steering rod 31 is connected to the mounting base 22, and the other end is slidably mounted on the housing 10 along the extension and retraction direction of the handle assembly 20, so that the handle assembly 20 can be retractably mounted on the housing 10. The steering rod 31 has a retracted position and an extended position relative to the housing 10. It can be understood that when the steering rod 31 slides relative to the housing 10 to the retracted position, the handle assembly 20 is embedded in the handle storage cavity 11, and the filling surface 221 can smoothly connect with the surface of the housing 10 at the edge of the opening 12; when the steering rod 31 slides relative to the housing 10 to the extended position, the handle assembly 20 is fully extended out of the handle storage cavity 11. The sliding arrangement of the steering rod 31 relative to the housing 10 can be achieved by providing a sliding cavity on the housing 10. For example, the sliding cavity can be provided by an outer sleeve 35 provided outside the steering rod 31. The outer sleeve 35 is fixed relative to the housing 10 in the axial direction. The steering rod 31 can be slidably arranged inside the outer sleeve 35. The bottom of the handle storage cavity 11 is provided with a through hole so that the steering rod 31 can be connected to the mounting base 22 through the through hole.

[0038] A telescopic positioning mechanism 32 is disposed within the steering rod 31 and is used to position the steering rod 31 in the retracted position. A telescopic button 33 is connected to the telescopic positioning mechanism 32 and is used to unlock the telescopic positioning mechanism 32 from positioning the steering rod 31. An extendable elastic element 34 is disposed within the housing 10 and is used to drive the steering rod 31 to extend to the extended position after the telescopic positioning mechanism 32 unlocks the steering rod 31. The extendable elastic element 34 can be a spring, but is not limited to this. In this embodiment, the telescopic positioning mechanism 32 between the steering rod 31 and the outer sleeve 35 is not limited. For example, the positioning of the steering rod 31 relative to the outer sleeve 35 can be achieved by a radially retractable positioning pin 322 along the steering rod 31 and the outer sleeve 35. The positioning pin 322 passes through a through hole in the side wall of the outer sleeve 35, fixing the steering rod 31 relative to the outer sleeve 35; when the positioning pin 322 is fully retracted into the outer sleeve 35, the steering rod 31 can slide relative to the outer sleeve 35. Figure 10As shown, in some embodiments, the telescopic positioning mechanism 32 may include a mounting block 321 fixed within the steering rod 31, a positioning pin 322 slidably disposed on the mounting block 321 along the radial direction of the steering rod 31, a wedge block 323 that drives the positioning pin 322 to retract into the outer sleeve 35, a return spring 324 that drives the positioning pin 322 to extend through the outer sleeve 35, and a telescopic drive rod 325 connecting the wedge block 323 and the telescopic button 33. The telescopic button 33 may be slidably disposed on the mounting base 22 in the vertical direction, so that pressing the telescopic button 33 downwards can push the telescopic drive rod 325 to move the wedge block 323 downwards. The downward movement of the wedge block 323 can push the positioning pin 322 to slide into the outer sleeve 35, thereby releasing the positioning of the steering rod 31 by the telescopic positioning mechanism 32. Then, the steering rod 31 extends under the action of the extending elastic member 34, and at the same time pushes the handle assembly 20 to extend from the handle storage cavity 11. When the steering rod 31 is pushed downwards until the positioning pin 322 on the steering rod 31 slides to the corresponding through hole position on the side wall of the outer sleeve 35, the positioning pin 322 extends out of the through hole under the action of the return spring 324, thereby positioning the steering rod 31. It can be understood that when the steering rod 31 is extended to the extended position, a through hole is also provided on the side wall of the outer sleeve 35 at the position corresponding to the positioning pin 322. At this time, the positioning pin 322 cooperates with this through hole to position the steering rod 31 in the extended position, ensuring riding safety.

[0039] It should be noted that the mounting base 22 of the handle 21 is generally also equipped with a start button for the control device connected to the drive wheel motor, and the start button is connected to the control device by a wire. Figure 11 As shown, in some embodiments, a wiring groove 311 is provided on the outer wall of the steering rod 31. After the wire passes through the steering rod 31, it can be embedded in the wiring groove 311 to prevent the wire from affecting the sliding relative to the outer sleeve 35. A guide rib 312 corresponding to the position of the wiring groove 311 is provided on the inner wall of the steering rod 31. The wedge block 323 in the telescopic positioning mechanism 32 has a notch 323a in its circumferential direction that mates with the guide rib 312. Simultaneously, on the other side of the wedge block 323 opposite to the notch 323a in the circumferential direction, an arc-shaped guide edge 323b mates with the inner wall of the steering rod 31. For example... Figure 11As shown, the guide rib 312 can be arc-shaped, and correspondingly, the notch 323a is an arc-shaped notch 323a. On the one hand, by setting the guide rib 312, the wall thickness of the steering rod 31 in the circumferential direction can be increased, thereby ensuring the depth of the wiring groove 311. On the other hand, by using the guide rib 312 and setting a matching notch 323a on the wedge block 323, the notch 323a can be made to cooperate with the guide rib 312. At the same time, the arc-shaped guide edge 323b on the wedge block 323 can cooperate with the inner wall of the steering rod 31, which can prevent the wedge block 323 and the telescopic drive rod 325 connecting the wedge block 323 and the telescopic button 33 from shaking during movement, thus ensuring the stability of the transmission between the telescopic button 33, the telescopic drive rod 325, and the wedge block 323.

[0040] Since both the drive button 25 and the telescopic button 33 can slide vertically on the mounting base 22, and the drive button 25 drives the two positioning blocks 23 to move closer to each other by moving downwards, thereby disengaging the positioning groove 212 and the positioning protrusion 231, and the telescopic button 33 also drives the telescopic positioning mechanism 32 to release the positioning of the steering rod 31 by moving downwards, so that the steering rod 31 can slide to the retracted position, thereby driving the handle assembly 20 to move into the storage cavity. In some embodiments, the telescopic button 33 can be the drive button 25, and the drive button 25 is configured to simultaneously unlock the telescopic positioning mechanism 32 from positioning the steering rod 31 when driving the two positioning blocks 23 to move closer to each other. Thus, the storage of the handle assembly 20 and the steering rod assembly 30 are integrated into a single drive button 25, simplifying the overall structure of the electric luggage box 100, and simplifying the storage operation of the handle assembly 20 and the steering rod assembly 30.

[0041] like Figures 12 to 14 As shown, it can be understood that both the handle assembly 20 and the steering lever assembly 30 belong to the steering mechanism of the electric luggage compartment 100. In some embodiments, the steering mechanism further includes a steering wheel assembly 40 and a linkage assembly 50.

[0042] like Figures 15 to 20As shown, the steering wheel assembly 40 includes two caster wheel mechanisms 41 and a positioning connecting rod 42. Each caster wheel mechanism 41 includes a rotating shaft 411, a connecting shaft 412, and a positioning sleeve 413. One end of the connecting shaft 412 is used to connect a wheel, and the other end is rotatably mounted on one end of the rotating shaft 411. The positioning sleeve 413 is sleeved on the rotating shaft 411 and has a first position and a second position in the axial direction of the rotating shaft 411. The positioning sleeve 413 is configured such that, when in the first position, it can lock the relative position of the connecting shaft 412 and the rotating shaft 411, and when in the second position, it can release the lock on the connecting shaft 412. Both ends of the positioning connecting rod 42 are rotatably connected to the two positioning sleeves 413, respectively, to drive the two positioning sleeves 413 to move synchronously between the first and second positions. It can be understood that the wheels connected to the connecting shaft 412 are the front wheels 81 of the electric luggage compartment 100; each front wheel 81 can be one wheel, or two wheels, but is not limited to these. Figure 19 As shown, when the positioning sleeve 413 is in the first position, it locks the relative positions of the connecting shaft 412 and the rotating shaft 411. That is, at this time, the connecting shaft 412 cannot rotate freely relative to the rotating shaft 411. The front wheel 81 is a directional wheel, and the rotation of the positioning sleeve 413 drives the front wheel 81 to turn. Figure 20 As shown, when the positioning sleeve 413 is in the second position, the connecting shaft 412 can rotate freely relative to the rotating shaft 411, that is, the front wheel 81 is a universal wheel at this time.

[0043] like Figure 12 and Figure 14 As shown, the linkage component 50 connects the steering rod 31 in the steering rod assembly 30 and the positioning connecting rod 42 in the steering wheel assembly 40. The linkage component 50 is used to drive the positioning sleeve 413 to move in the opposite direction along the axis of the shaft 411 when the steering rod 31 moves axially, so that: when the steering rod 31 is in the retracted position, the positioning sleeve 413 is in the second position; when the steering rod 31 is in the extended position, the positioning sleeve 413 is in the first position. That is, when the steering rod 31 is extended, the two front wheels 81 are directional wheels, and the electric luggage box 100 is in a rideable state, ensuring the accuracy of steering control of the front wheels 81 and the stability of riding when the electric luggage box 100 is being ridden; when the steering rod 31 is retracted into the box body 10, the front wheels 81 are omnidirectional wheels, and the electric luggage box 100 is in the state of a regular luggage box, ensuring the flexibility of steering when the electric luggage box 100 is being pushed as a regular luggage box, while the two front wheels 81 also ensure the stability of pushing the electric luggage box 100. This ensures that the steering wheel assembly 40 can guarantee the stability of the electric luggage box 100 when riding and pushing, while also ensuring the flexibility of turning when pushing.

[0044] like Figures 17 to 20As shown, one end of the connecting shaft 412 in the universal wheel mechanism 41 is connected to the front wheel 81. In this embodiment, the specific connection method is not limited. For example, the connection between the connecting shaft 412 and the front wheel 81 can be a threaded connection, a bolt connection, an interference fit, or a pin connection, but it is not limited to these.

[0045] The other end of the connecting shaft 412 is rotatably engaged with the rotating shaft 411, and also engages with the positioning sleeve 413, so that the positioning sleeve 413 can lock the relative rotation of the rotating shaft 411 and the connecting shaft 412. In this embodiment, the specific structure of the other end of the connecting shaft 412 and the positioning sleeve 413 is not limited. Figure 21 As shown, in some embodiments, a sleeve structure 412a may be formed at one end of the connecting shaft 412 rotatably connected to the rotating shaft 411. The sleeve structure 412a is rotatably disposed at one end of the rotating shaft 411, for example, the sleeve structure 412a is rotatably sleeved on one end of the rotating shaft 411, but is not limited thereto. The end face of the sleeve structure 412a includes two symmetrical first guide surfaces 412b. The first guide surface 412b includes at least two helical surfaces 412c. Adjacent helical surfaces 412c are connected by an abutment plane 412d. The abutment plane 412d extends along the axial direction of the connecting shaft 412, and one end of the two first guide surfaces 412b is connected to form a first positioning groove 412e, and the other end is connected to form a first positioning protrusion 412f.

[0046] Correspondingly, such as Figure 22 As shown, the positioning sleeve 413 has two symmetrical second guide surfaces 413a at one end facing the connecting shaft 412. The shape of the second guide surface 413a corresponds to that of the first guide surface 412b. It can be understood that the second guide surface 413a also includes at least two helical surfaces 412c. Adjacent helical surfaces 412c are connected by an abutment plane 412d, and the abutment plane 412d extends along the axial direction of the connecting shaft 412. One end of the second guide surface 413a is connected to form a second positioning groove 413b, and the other end is connected to form a second positioning protrusion 413c. When the positioning sleeve 413 is in the first position, the first positioning groove 412e engages with the second positioning protrusion 413c, and the first positioning protrusion 412f engages with the second positioning groove 413b, to prevent the sleeve structure 412a from rotating relative to the rotating shaft 411, thereby locking the relative positions of the connecting shaft 412 and the rotating shaft 411. When the positioning sleeve 413 is in the second position, in the axial direction of the rotating shaft 411, the second positioning protrusion 413c is located on the side of the first positioning protrusion 412f away from the first positioning groove 412e. At this time, the positioning sleeve 413 no longer restricts the rotation of the connecting shaft 412 relative to the rotating shaft 411, thereby releasing the locking of the relative positions of the connecting shaft 412 and the rotating shaft 411. The second guide surface 413a can be formed on the inner circumferential surface of the positioning sleeve 413. When the positioning sleeve 413 is in the first position, it is fitted onto the outer circumference of the sleeve structure 412a.

[0047] It should be noted that, since the sleeve structure 412a can rotate freely relative to the shaft 411 when the positioning sleeve 413 is in the second position, that is, when the positioning sleeve 413 moves downward from the second position to the first position, the relative positions of the first positioning groove 412e and the second positioning protrusion 413c, and the relative positions of the first positioning protrusion 412f and the second positioning groove 413b, are not necessarily directly corresponding in the circumferential direction of the shaft 411. During the process of the positioning sleeve 413 moving from the first position to the second position, the positioning sleeve 413 and the sleeve structure 412a move relative to each other in the axial direction of the shaft 411, and rotate relative to each other in the circumferential direction of the shaft 411. By making the first guide surface 412b and the second guide surface 413a include the helical surface 412c, the bolt surface can guide the first positioning groove 412e to engage with the second positioning protrusion 413c and the first positioning protrusion 412f to engage with the second positioning groove 413b in the vertical direction. Simultaneously, the helical surface 412c can also guide the sleeve structure 412a to rotate in the circumferential direction of the rotating shaft 411 towards the direction in which the first positioning groove 412e engages with the second positioning protrusion 413c and the first positioning protrusion 412f engages with the second positioning groove 413b. Thus, when riding is required, there is no need to manually position the front wheel 81 circumferentially to the position where the first positioning groove 412e and the second positioning protrusion 413c, and the first positioning protrusion 412f and the second positioning groove 413b can engage, simplifying the operation of converting the front wheel 81 from omnidirectional to directional.

[0048] Furthermore, by including abutment planes 412d on both the first guide surface 412b and the second guide surface 413a, when the positioning sleeve 413 is in the first position, the vertically extending abutment planes 412d on the first guide surface 412b and the vertically extending abutment planes 412d on the second guide surface 413a abut against each other. When the positioning sleeve 413 has a tendency to rotate relative to the sleeve structure 412a, the abutment of the abutment planes 412d can drive the sleeve structure 412a to rotate, thereby improving the circumferential force transmission effect between the positioning sleeve 413 and the sleeve structure 412a, and thus enabling the steering of the front wheel 81 in the directional wheel state.

[0049] like Figure 21 As shown, in some embodiments, the first guide surface 412b may include three helical surfaces 412c and two abutment surfaces 412d. It is understood that the second guide surface 413a also correspondingly includes three helical surfaces 412c and two abutment surfaces 412d. However, the number of helical surfaces 412c and abutment surfaces 412d in the first guide surface 412b and the second guide surface 413a is not limited to this. When the first guide surface 412b includes two abutment surfaces 412d, the stability of the circumferential transmission of the positioning sleeve 413 to the sleeve structure 412a is improved in the axial direction of the sleeve structure 412a.

[0050] It should be noted that, to ensure that the positioning sleeve 413 does not experience axial relative displacement when it rotates the sleeve structure 412a in the first position, in some embodiments, the universal wheel mechanism 41 further includes a positioning elastic element 416. The positioning elastic element 416 can be a spring, but is not limited to this. The positioning elastic element 416 is sleeved on the rotating shaft 411, located on the side of the positioning sleeve 413 away from the connecting shaft 412, thus the elastic force of the positioning elastic element 416 keeps the positioning sleeve 413 in the first position. When the positioning sleeve 413 needs to move from the second position to the first position, the positioning elastic element 416 can simultaneously be used to push the positioning sleeve 413 to the first position.

[0051] like Figures 19 to 20 ,as well as Figure 22 As shown, in one embodiment, the inner circumference of the positioning sleeve 413 may also have a stop surface 413d. The stop surface 413d is disposed away from the second guide surface 413a. For example, the stop surface 413d may be a stepped surface of the inner circumference of the positioning sleeve 413. The universal wheel mechanism 41 also includes a linear bearing 414 and a stop member 415. The linear bearing 414 is sleeved on the rotating shaft 411 and disposed inside the positioning sleeve 413, with the stop surface 413d disposed at one end facing the linear bearing 414. The stop member 415 is disposed at the end of the linear bearing 414 away from the stop surface 413d. The stop surface 413d and the stop member 415 are used to limit the position of the linear bearing 414 relative to the positioning sleeve 413 in the axial direction. The stop 415 can be a gasket fixed to the end of the positioning sleeve 413 away from the sleeve structure 412a. The gasket has a through hole fitted onto the rotating shaft 411, and the diameter of the through hole is smaller than the outer diameter of the linear bearing 414. By setting the linear bearing 414, the positioning sleeve 413 can be smoothly rotated and moved relative to the rotating shaft 411. It can be understood that the linear bearing 414 can be selected as a linear rotating bushing, or when the linear bearing 414 is selected as a general linear bearing that can only move linearly, a deep groove ball bearing can be set between the linear bearing 414 and the positioning sleeve 413 to allow the positioning sleeve 413 to rotate relative to the rotating shaft 411. However, the selection of the linear bearing 414 is not limited to these options.

[0052] like Figures 17 to 20As shown, in some embodiments, since the abutment 415 is located at the end of the positioning sleeve 413 facing away from the connecting shaft 412, and the abutment 415 rotates with the positioning sleeve 413, and the end of the positioning sleeve 413 facing away from the connecting shaft 412 is also provided with a positioning elastic element 416, to avoid direct contact between the abutment 415 and the positioning elastic element 416, the universal wheel mechanism 41 also includes a plane bearing 417. The plane bearing 417 is sleeved on the rotating shaft 411, with one end face of the plane bearing 417 abutting against the abutment 415 and the other end face abutting against the positioning elastic element 416. Thus, the plane bearing 417 can ensure that the positioning sleeve 413 rotates smoothly relative to the rotating shaft 411, thereby smoothly driving the front wheel 81 to turn.

[0053] In the steering wheel assembly 40, the positioning connecting rod 42 drives the two positioning sleeves 413 to move synchronously between a first position and a second position, thereby enabling the two front wheels 81 to switch synchronously between omnidirectional wheel and directional wheel states. Figure 15 and Figure 16 As shown, the positioning connecting rod 42 may be provided with C-shaped engaging parts at both ends. The C-shaped engaging parts engage with the outer periphery of the positioning sleeve 413 and can be rotated relative to the positioning sleeve 413. At the same time, the outer periphery of the positioning sleeve is provided with a limiting flange 418 for restricting the axial movement of the C-shaped engaging parts relative to the positioning sleeve 413.

[0054] like Figure 15 and Figure 16 As shown, in some embodiments, the steering wheel assembly 40 may further include a steering connecting rod 43. Both ends of the steering connecting rod 43 are hinged to positioning sleeves 413 in the two universal wheel mechanisms 41, respectively. The steering connecting rod 43 is used to drive the two positioning sleeves 413 to rotate synchronously, thereby driving the wheels connected to the two universal wheel mechanisms 41 to rotate synchronously. That is, the steering connecting rod 43 drives the two front wheels 81 to turn synchronously. In this application embodiment, the specific hinge method between the steering connecting rod 43 and the positioning sleeves 413 is not limited. For example, in some embodiments, both ends of the steering connecting rod 43 are provided with connecting holes, and a hinge rod 44 is slidably connected in the connecting holes, the hinge rod 44 connecting to the positioning sleeves 413. For example, the hinge rod 44 may be fixedly disposed along the axial direction of the positioning sleeve 413 in the circumferential direction.

[0055] The linkage component 50 enables the positioning sleeve 413 to be in the second position when the steering rod 31 is in the retracted position, and in the first position when the steering rod 31 is in the extended position, thus linking the extension and retraction of the steering rod 31 with the movement of the positioning sleeve 413. Figure 14 and Figure 23As shown, in some embodiments, the linkage assembly 50 may include a base 51 and a linkage rod 52. The base 51 may be fixed to the housing 10. The linkage rod 52 is rotatably mounted on the base 51, with one end connected to the steering rod 31 and the other end connected to the positioning connecting rod 42. For example, both ends of the linkage rod 52 abut against the steering rod 31 and the positioning connecting rod 42, respectively. When the positioning sleeve 413 moves downward to the first position under the push of the positioning elastic member 416, the positioning connecting rod 42 moves downward along with the positioning sleeve 413. The positioning connecting rod 42 pushes one end of the linkage rod 52 downward and the other end of the linkage rod 52 upward, so that the steering rod 31 can be pushed out after the telescopic positioning mechanism 32 releases the positioning of the steering rod 31. When the user pushes the steering rod 31 to the retracted position, the steering rod 31 pushes the end of the linkage rod 52 connected to it downward and the end of the linkage rod 52 abutting against the positioning connecting rod 42 upward, so that the positioning sleeve 413 can be pushed to press the positioning elastic member 416 upward to the second position. It can be understood that when the positioning elastic element 416 pushes the positioning sleeve 413 to the first position, it can simultaneously drive the steering rod 31 to extend to the extended position after the telescopic positioning mechanism 32 unlocks the positioning of the steering rod 31. Therefore, the positioning elastic element 416 is the same as the extension elastic element 34.

[0056] like Figure 24 As shown, in some embodiments, the end of the linkage rod 52 connected to the steering rod 31 is provided with an abutment surface 521, which abuts against the end of the steering rod 31 away from the handle 21. For example, the abutment surface 521 can be an arc surface. The end of the linkage rod 52 connected to the positioning connecting rod 42 is provided with an abutment post 522, which abuts against the end of the positioning connecting rod 42 away from the protruding elastic member 34. For example, the abutment post 522 is a cylinder.

[0057] like Figures 14 to 16 As shown, in some embodiments, the steering wheel assembly 40 may further include a drive connector 45. The two ends of the steering connecting rod 43 are respectively hinged to two positioning sleeves 413. The drive connector 45 is rotatably disposed on the steering connecting rod 43 and is connected to the steering rod 31. The drive connector 45 is used to drive the steering connecting rod 43 to drive the two positioning sleeves 413 to rotate synchronously when the steering rod 31 rotates.

[0058] It can be understood that the connection between the drive connector 45 and the steering rod 31 is a relatively fixed connection in the circumferential direction of the steering rod 31, so that the steering rod 31 can drive the drive connector 45 to swing when it rotates. Since the positioning pin 322 engages with the through hole on the outer sleeve 35 when the steering rod 31 is in the extended position, the steering rod 31 and the outer sleeve 35 are relatively fixed in the circumferential direction, which allows the outer sleeve 35 to be rotatably mounted on the housing 10, and the drive connector 45 to be fixed to the peripheral wall of the outer sleeve 35.

[0059] The drive connector 45 is rotatably mounted on the steering connecting rod 43. An angle limiting structure 431 can be provided on the steering connecting rod 43 to limit the rotation angle of the drive connector 45 relative to the steering connecting rod 43, that is, to limit the steering angle of the steering rod 31, thereby ensuring riding safety. In some embodiments, a Hall sensor 451 can also be provided on the drive connector 45. When turning, the drive connector 45 drives the Hall sensor 451 to swing, which can be used to detect the user's turning and thus automatically decelerate, ensuring riding safety.

[0060] like Figures 1 to 3 As shown, in some embodiments, the electric luggage compartment 100 also includes a foot pedal 61, which can be used by the user to place their feet while riding. To avoid the foot pedal 61 affecting the use of the electric luggage compartment 100 in non-riding mode, the foot pedal 61 can be retractably mounted on the compartment body 10. The specific method of retractable mounting of the foot pedal 61 on the compartment body 10 is not limited in this embodiment. Since the foot pedals 61 are generally located on opposite sides of the compartment body 10, both foot pedals 61 can be individually retractable relative to the compartment body 10, or a linkage mechanism can be provided between the two foot pedals 61 to synchronize the extension and retraction of the two foot pedals 61, simplifying the preparation operation for riding the electric luggage compartment 100. For example, the linkage mechanism can be a gear and rack mechanism, a lead screw and slider mechanism, or a linkage and slider mechanism, but is not limited to these. Figure 25 As shown, when the linkage mechanism is a gear and rack mechanism, it may include a linkage gear 623, a first rack 621, and a second rack 622. The first rack 621 is mounted on one of the pedals, and the second rack 622 is mounted on the other pedal. One side of the linkage gear 623 meshes with the first rack 621, and the other side meshes with the second rack 622, so that the linkage gear 623 can drive the other rack to move under the drive of either the first rack 621 or the second rack 622. Figure 26 As shown, when the linkage mechanism is a linkage slider mechanism, the linkage mechanism may include a rotatably configured intermediate linkage 633, a first linkage 631 and a second linkage 632 respectively hinged to both ends of the intermediate linkage 633, and two pedals respectively connected to the ends of the first linkage 631 and the second linkage 632 away from the intermediate linkage 633, so that the intermediate linkage 633 can drive the other one to move under the drive of one of the first linkage 631 and the second linkage 632.

[0061] like Figure 27As shown, in some embodiments, the electric luggage 100 also includes a pull rod 70. The pull rod 70 can also be telescopically mounted on the luggage body 10. The pull rod 70 is used to push the electric luggage 100 when it is not in a riding state. An assist push button 71 can be provided on the pull rod 70. The assist push button 71 is also connected to the control device of the drive wheel motor. When the user pushes the electric luggage 100 in a non-riding state, the motor can also provide a certain amount of power to the drive wheel to assist in pushing. It can be understood that the assist push button 71 can also be connected to the control device of the drive wheel motor through a wire. The pull rod 70 is generally composed of three sections of pull rod 70 sleeved together. In this case, the wire can include two spiral segments 721 and a straight segment 722 connecting the two spiral segments 721. One spiral segment 721 is located inside the innermost pull rod 70, and the other spiral segment 721 is located outside the outermost pull rod 70. When the intermediate layer tie rod 70 extends relative to the outermost layer tie rod 70, it stretches the spiral segment 721 outside the outermost layer tie rod 70; when the innermost layer tie rod 70 extends relative to the intermediate layer tie rod 70, it stretches the spiral segment 721 inside the innermost layer tie rod 70. This ensures both effective connection of the wires and stretching of the tie rod 70.

[0062] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A universal wheel mechanism, characterized in that, include: Shaft; A connecting shaft has one end for connecting a wheel and the other end for forming a sleeve structure, which is rotatably mounted on one end of the shaft. The end face of the sleeve structure includes two symmetrical first guide surfaces, each first guide surface including at least two helical surfaces. Adjacent helical surfaces are connected by an abutting plane, which extends along the axial direction of the connecting shaft. The two first guide surfaces are connected at one end to form a first positioning groove and at the other end to form a first positioning protrusion. A positioning sleeve is fitted onto the rotating shaft and has a first position and a second position in the axial direction of the rotating shaft. The end of the positioning sleeve facing the connecting shaft has two symmetrical second guide surfaces. The shape of the second guide surface corresponds to the first guide surface. One end of the second guide surface is connected to form a second positioning groove, and the other end is connected to form a second positioning protrusion. When the positioning sleeve is in the first position, the first positioning groove engages with the second positioning protrusion, and the first positioning protrusion engages with the second positioning groove to prevent the sleeve structure from rotating relative to the rotating shaft; When the positioning sleeve is in the second position, the second positioning protrusion is located on the side of the first positioning protrusion away from the first positioning groove in the axial direction of the rotating shaft.

2. The universal wheel mechanism according to claim 1, characterized in that, The first guide surface includes three spiral surfaces and two contact surfaces.

3. The universal wheel mechanism according to claim 1, characterized in that, The second guide surface is formed on the inner circumferential surface of the positioning sleeve; When the positioning sleeve is in the first position, it is fitted onto the outer periphery of the sleeve structure.

4. The caster wheel mechanism according to any one of claims 1-3, characterized in that, The positioning sleeve has a stop surface formed on its inner circumference, and the stop surface is disposed away from the second guide surface; The caster wheel mechanism also includes: A linear bearing is sleeved on the rotating shaft and disposed inside the positioning sleeve, with the abutting surface facing one end of the linear bearing; A stopper is disposed at the end of the linear bearing away from the stopper surface. The stopper surface and the stopper are used to restrict the position of the linear bearing relative to the positioning sleeve in the axial direction of the positioning sleeve.

5. The universal wheel mechanism according to claim 4, characterized in that, The stopper is located at the end of the positioning sleeve facing away from the connecting shaft; The caster wheel mechanism also includes: A planar bearing is sleeved on the rotating shaft, and one end face of the planar bearing abuts against the abutment; A positioning elastic element is sleeved on the rotating shaft to push the positioning sleeve to the first position, and the other end face of the planar bearing abuts against the positioning elastic element.

6. A steering wheel assembly, characterized in that, include: The caster wheel mechanism according to any one of claims 1-5 is provided in two forms; The steering connecting rod is hinged at both ends to the positioning sleeves in the two universal wheel mechanisms. The steering connecting rod is used to drive the two positioning sleeves to rotate synchronously, so as to drive the wheels connected to the two universal wheel mechanisms to rotate synchronously.

7. The steering wheel assembly according to claim 6, characterized in that, Both ends of the steering connecting rod are provided with connecting holes, and a hinge rod is slidably connected in the connecting holes. The hinge rod is connected to the positioning sleeve.

8. The steering wheel assembly according to claim 6 or 7, characterized in that, The steering wheel assembly also includes: The positioning connecting rod is rotatably connected to the two positioning sleeves at both ends, and is used to drive the two positioning sleeves to move synchronously between the first position and the second position.

9. An electric suitcase, characterized in that, include: Box; Two drive wheels are provided and are located at the rear end of the box body along the driving direction of the electric luggage box; The steering wheel assembly according to any one of claims 6-8 is disposed at the front end of the box body along the travel direction of the electric luggage box.

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