An electric trolley base and an electric trolley

Abstract

This application relates to the field of electric luggage technology, providing an electric luggage base and an electric luggage. The electric luggage base includes: a seat body with a mounting cavity; a telescopic drive mechanism disposed in the mounting cavity, including a drive rod and a slider; and a telescopic rod slidably disposed in the mounting cavity, with one end extending from the mounting cavity and the other end connected to the slider. The drive rod drives the slider to move the telescopic rod along the mounting cavity. In use, the electric luggage base provided in this application is placed on the bottom of the electric luggage body, and the front or rear wheel of the electric luggage is connected to the end of the telescopic rod extending from the mounting cavity. The telescopic rod then drives the front or rear wheel of the electric luggage to extend, thereby increasing the wheelbase between the front and rear wheels of the electric luggage and ensuring the stability of the electric luggage during riding.

Description

Technical Field

[0001] This application relates to the field of electric luggage technology, and more particularly to an electric luggage base and an electric luggage. Background Technology

[0002] Currently, some suitcases are designed as rideable electric suitcases. In this technology, the front and rear wheels of the electric suitcase are directly mounted on the bottom of the suitcase, and then a drive unit drives the front or rear wheels to rotate, allowing the user to ride the electric suitcase while sitting on it.

[0003] It is evident that the wheelbase between the front and rear wheels of the electric luggage in the relevant technology is limited by the size of the luggage body, resulting in poor stability when riding the electric luggage. Utility Model Content

[0004] This application provides an electric luggage base and an electric luggage box to solve the technical problem in the prior art where the wheelbase between the front and rear wheels of the electric luggage box is limited by the size of the box, resulting in poor stability when riding.

[0005] To address the aforementioned problems, this application provides an electric luggage base, comprising:

[0006] The base has an installation cavity;

[0007] A telescopic drive mechanism, disposed in the mounting cavity, includes a drive rod and a slider;

[0008] A telescopic rod is slidably disposed in the mounting cavity, with one end extending out of the mounting cavity and the other end connected to the slider. The drive rod is used to drive the slider to move the telescopic rod along the mounting cavity.

[0009] In some embodiments, the slider is threadedly engaged with the drive rod;

[0010] The telescopic rod has a receiving cavity, and the slider is located inside the receiving cavity.

[0011] In some embodiments, a first limiting portion is provided on the side wall of the mounting cavity, and a second limiting portion is provided on the telescopic rod. The first limiting portion is used to abut against the second limiting portion to prevent the telescopic rod from continuing to extend out of the mounting cavity.

[0012] In some embodiments, the first limiting portion includes a sleeve structure and a flange structure, the flange structure being formed at one end of the sleeve structure, the sleeve structure being embedded in the mounting cavity, and the flange structure abutting against the end face of the seat.

[0013] In some embodiments, the inner surface of the sleeve structure is in slidable contact with the telescopic rod.

[0014] In some embodiments, the outer surface of the sleeve structure is provided with a snap-fit ​​protrusion, and the seat is provided with a snap-fit ​​groove that engages with the snap-fit ​​protrusion.

[0015] In some embodiments, the second limiting portion includes a plurality of limiting blocks, which are distributed circumferentially along the telescopic rod.

[0016] In some embodiments, the side surface of the limiting block facing away from the telescopic rod is slidably in contact with the side wall of the mounting cavity.

[0017] In some embodiments, the seat body is further formed with a connecting plate for connecting the body of the electric luggage case.

[0018] This application also provides an electric suitcase, comprising:

[0019] Box;

[0020] Any of the electric luggage bases described above is disposed at the bottom of the luggage body;

[0021] The driving wheel assembly includes a front wheel and a rear wheel, one of which is disposed at one end of the telescopic rod extending from the mounting cavity, and the other is disposed in the housing.

[0022] The beneficial effects of this application's embodiments are as follows: This application provides an electric luggage base. By forming a mounting cavity on the base body, a telescopic drive mechanism and a telescopic rod are disposed in the mounting cavity. One end of the telescopic rod extends from the mounting cavity, and the other end is connected to the telescopic drive mechanism, thereby allowing the telescopic drive mechanism to drive the telescopic rod to extend from the mounting cavity. In use, one of the front and rear wheels of the electric luggage is connected to the end of the telescopic rod extending from the mounting cavity, while the other wheel is disposed on the luggage body. Thus, by driving the telescopic drive mechanism to extend the telescopic rod from the mounting cavity, the wheelbase between the front and rear wheels of the electric luggage can be increased, ensuring the stability of the electric luggage during riding. Furthermore, when the telescopic rod is connected to the front wheel of the electric luggage, by extending the front wheel, the user can place their legs between the luggage body and the front wheel while riding, improving riding comfort. In addition, the telescopic drive mechanism can adjust the length of the telescopic rod extending from the mounting cavity to adapt to the needs of different users.

[0023] By making the inner surface of the sleeve structure in the first limiting part slidably contact the telescopic rod, and making the limiting block in the second limiting part slidably contact the side wall of the mounting cavity, when the telescopic rod slides relative to the seat, at the positions of the first limiting part and the second limiting part, it is equivalent to the outer periphery of the telescopic rod abutting against the side wall of the mounting cavity, thereby increasing the stability of the telescopic rod sliding. Attached Figure Description

[0024] 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:

[0025] Figure 1 This is a schematic diagram of the structure of an electric luggage base provided in one embodiment of this application;

[0026] Figure 2 This is an exploded view of an embodiment of the electric luggage base provided in this application;

[0027] Figure 3 This is a schematic diagram of the internal structure of an electric luggage base provided in one embodiment of this application;

[0028] Figure 4 This is a partial internal structural diagram of the telescopic rod extending to its limit position in the base of an electric luggage box according to an embodiment of this application;

[0029] Figure 5 This is a schematic diagram of the structure of an electric suitcase provided in one embodiment of this application;

[0030] Figure 6 This is a schematic diagram of the structure of an electric luggage box provided in one embodiment of this application when it is ridden;

[0031] In the diagram: 100, base; 10, seat body; 11, mounting cavity; 12, first limiting part; 121, sleeve structure; 122, flange structure; 123, snap-fit ​​protrusion; 13, slot; 14, connecting plate; 20, telescopic drive mechanism; 21, drive rod; 22, slider; 30, telescopic rod; 31, accommodating cavity; 321, limiting block; 40, bearing seat; 200, housing; 300, running wheel assembly; 301, front wheel; 302, rear wheel. Detailed Implementation

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] Please see Figure 1 , Figure 5 and Figure 6 This application provides an electric luggage base 100, which can be applied to the bottom of the electric luggage body 200 for connecting the front wheel 301 or the rear wheel 302 of the electric luggage. It should be noted that the descriptions of the front wheel 301, rear wheel 302, and other aspects related to orientation in the embodiments of this application are all based on the orientation of the user riding the electric luggage. The following embodiments of this application use the connection of the base 100 to the front wheel 301 of the electric luggage as an example for illustration.

[0037] Please refer to the following: Figures 2 to 4The electric luggage base 100 provided in this application includes a seat 10, a telescopic drive mechanism 20, and a telescopic rod 30. The seat 10 has a mounting cavity 11. The telescopic drive mechanism 20 is disposed in the mounting cavity 11 and includes a drive rod 21 and a slider 22. The telescopic rod 30 is slidably disposed in the mounting cavity 11, with one end extending from the mounting cavity 11 and the other end connected to the slider 22 in the telescopic drive mechanism 20. When the drive rod 21 drives the slider 22 to slide within the mounting cavity 11, the slider 22 can cause the telescopic rod 30 to slide along the mounting cavity 11.

[0038] When the base 100 is disposed at the bottom of the housing 200, the seat 10 is used to connect with the housing 200 and also serves to support the housing 200. This application embodiment does not limit the specific shape and structure of the seat 10; for example, as... Figure 2 and Figure 3 As shown, the base 10 can be a rectangular profile, and the cavity of the profile forms the mounting cavity 11.

[0039] To facilitate the connection between the seat 10 and the housing 200, in some embodiments, a connecting plate 14 is also formed on the seat 10. The connecting plate 14 is used to connect the housing 200 of the electric luggage case. It is understood that the connecting plate 14 is formed on the outer surface of the seat 10. The specific location, shape, and extension dimensions of the connecting plate 14 on the seat 10 can be set according to the specific mating environment between the seat 10 and the housing 200. For example, as... Figure 1 and Figure 2 As shown, in some embodiments, the connecting plates 14 are distributed on the left and right sides of the base 10.

[0040] The telescopic drive mechanism 20 is used to drive the telescopic rod 30 to slide along the mounting cavity 11. It can be understood that the telescopic rod 30 sliding along the mounting cavity 11 means sliding along the extension direction of the mounting cavity 11. The telescopic drive mechanism 20 includes a drive rod 21 and a slider 22, with the drive rod 21 driving the slider 22 to move. It can be understood that the telescopic drive mechanism 20 is a linear drive mechanism; for example, it can be a cylinder, a rack and pinion mechanism, a worm gear and screw mechanism, a crank-slider mechanism, or a lead screw-slider mechanism, but it is not limited to these.

[0041] One end of the telescopic rod 30 extending from the mounting cavity 11 is connected to the front wheel 301 of the electric luggage box. When the slider 22 drives the telescopic rod 30 to extend from the mounting cavity 11, the wheelbase between the front wheel 301 and the rear wheel 302 can be increased.

[0042] In some embodiments, the slider 22 is threadedly engaged with the drive rod 21. For example... Figures 2 to 4As shown, the telescopic rod 30 forms a receiving cavity 31, and the slider 22 is located within the receiving cavity 31. The drive rod 21 includes a threaded rod, and the slider 22 includes a threaded sleeve that mates with the threaded rod. A motor drives the drive rod 21 to rotate, thereby causing the slider 22 to slide along the drive rod 21. When the slider 22 is threadedly engaged with the drive rod 21, the drive rod 21 can be positioned within the mounting cavity 11 along its extension direction, with one end of the drive rod 21 rotatably positioned within the mounting cavity 11. For example, a bearing seat 40 is provided at one end of the mounting cavity 11, and one end of the drive rod 21 is mounted on the bearing seat 40 via a bearing. The other end of the drive rod 21 is a free end that extends into the receiving cavity 31 of the telescopic rod 30. The telescopic rod 30 can also be a rectangular profile, with the profile's cavity forming the receiving cavity 31. By making the telescopic rod 30 form the receiving cavity 31, the slider 22 and the drive rod 21 can both be located in the receiving cavity 31. On the one hand, the telescopic rod 30 can be a profile with the cavity as the receiving cavity 31, ensuring the support strength of the telescopic rod 30. On the other hand, the space in the mounting cavity 11 in the transverse direction (perpendicular to the extension direction of the mounting cavity 11) and longitudinal direction (along the extension direction of the mounting cavity 11) can be maximized.

[0043] like Figures 2 to 4 As shown, in some embodiments, a first limiting part 12 is provided on the side wall of the mounting cavity 11, and a second limiting part is provided on the telescopic rod 30. The first limiting part 12 is used to abut against the second limiting part to prevent the telescopic rod 30 from continuing to extend out of the mounting cavity 11. It can be understood that the second limiting part is provided on the outer peripheral surface of the telescopic rod 30 and is located at the end where the telescopic rod 30 is connected to the slider 22. Correspondingly, the first limiting part 12 can be located near the end of the mounting cavity 11 where the telescopic rod 30 extends. During the process of the slider 22 driving the telescopic rod 30 to extend out of the mounting cavity 11, the second limiting part gradually moves closer to the first limiting part 12 until the second limiting part abuts against the first limiting part 12. Thus, through the cooperation of the first limiting part 12 and the second limiting part, the telescopic rod 30 is prevented from detaching from the mounting cavity 11, ensuring the stability and safety of the electric luggage case. In this embodiment, the specific structure of the first limiting part and the second limiting part is not limited. For example, the first limiting part and the second limiting part are protrusions formed on the side wall of the mounting cavity 11 and the outer peripheral surface of the telescopic rod 30, respectively.

[0044] like Figure 2 and Figure 4As shown, in some embodiments, the first limiting part 12 includes a sleeve structure 121 and a flange structure 122. The flange structure 122 is formed at one end of the sleeve structure 121. The sleeve structure 121 is embedded in the mounting cavity 11, and the flange structure 122 abuts against the end face of the seat body 10. It can be understood that the sleeve structure 121 is embedded in the end of the mounting cavity 11 where the telescopic rod 30 extends. By abutting against the end face of the seat body 10, the flange structure 122 can limit the embedded position of the sleeve structure 121 in the mounting cavity 11. At the same time, a threaded fastener can be provided at the flange structure 122 to fix the first limiting part 12 to the seat body 10, which facilitates the assembly and disassembly of the first limiting part 12.

[0045] Since the flange structure 122 is formed at one end of the sleeve structure 121, connecting the flange structure 122 to the base 10 is equivalent to only fixing one end of the sleeve structure 121 to the base 10. To further ensure the stability of the sleeve structure 121 within the mounting cavity 11, such as Figure 2 As shown, in some embodiments, the outer surface of the sleeve structure 121 may also be provided with a snap-fit ​​protrusion 123, and correspondingly, the seat body 10 is provided with a snap-fit ​​groove 13 that cooperates with the snap-fit ​​protrusion 123.

[0046] In some embodiments, the inner surface of the sleeve structure 121 can be slidably contacted with the telescopic rod 30. For example, the inner surface of the sleeve structure 121 can form a sliding track that cooperates with the telescopic rod 30, that is, the cross-sectional shape of the cavity of the sleeve structure 121 is the same as the cross-sectional shape of the telescopic rod 30. By making the inner surface of the sleeve structure 121 slidably contacted with the telescopic rod 30, the sleeve structure 121 can provide circumferential support for the telescopic rod 30, ensuring the stability of the telescopic rod 30 sliding within the mounting cavity 11. At the same time, after the telescopic rod 30 extends out of the mounting cavity 11, the first limiting part 12 can provide stable support for the end of the telescopic rod 30 away from the front wheel 301.

[0047] like Figure 2 and Figure 4 As shown, in some embodiments, the second limiting portion may include a plurality of limiting blocks 321, such that the plurality of limiting blocks 321 are distributed along the circumference of the telescopic rod 30. By dividing the second limiting portion into a plurality of limiting blocks 321 distributed along the circumference of the telescopic rod 30, the first limiting portion 12 can also be distributed along the circumference of the mounting cavity 11. When the first limiting portion 12 and the second limiting portion abut against each other, it is equivalent to limiting the telescopic rod 30 at multiple points along its circumference, ensuring the stability of the telescopic rod 30 when it extends to its limit position. In addition, it can simplify the structure of the second limiting portion.

[0048] In some embodiments, the side surface of the limiting block 321 facing away from the telescopic rod 30 can also be slidably contacted with the side wall of the mounting cavity 11. In this way, the limiting block 321 can also provide circumferential support for the telescopic rod 30, further ensuring the stability of the telescopic rod 30 sliding within the mounting cavity 11.

[0049] In some embodiments, to reduce the friction between the slidable contact surfaces of the sleeve structure 121 and the telescopic rod 30, and between the second limiting portion and the slidable contact surface of the mounting cavity 11, a plurality of arc-shaped protrusions can be formed on the inner surface of the sleeve structure 121 and on the side surface of the second limiting portion facing away from the telescopic rod 30. These arc-shaped protrusions are distributed circumferentially along the telescopic rod 30 and extend axially along the telescopic rod 30. This effectively transforms the surface contact between them into several line contacts, thus reducing relative sliding friction.

[0050] The electric luggage base 100 provided in the above embodiments of this application is used by installing the seat 10 on the bottom of the electric luggage body 200. When the seat 10 is provided with a connecting plate 14, the seat 10 and the luggage body 200 are fixedly connected through the connecting plate 14. One end of the telescopic rod 30 extending from the mounting cavity 11 is connected to the front wheel 301 of the electric luggage. When the electric luggage is not being ridden, the slider 22 is located in the mounting cavity 11 at the end near the rear wheel 302 on the luggage body 200. When riding is required, the motor in the electric luggage drives the drive rod 21 to rotate, and the slider 22 drives the telescopic rod 30 to extend out of the mounting cavity 11 at the end away from the rear wheel 302, thereby increasing the wheelbase between the front wheel 301 and the rear wheel 302. When the second limiting part on the telescopic rod 30 abuts against the first limiting part 12 on the side wall of the mounting cavity 11, the telescopic rod 30 extends to its limit position.

[0051] like Figure 5 and Figure 6 As shown, in some embodiments, this application also provides an electric suitcase, including a suitcase body 200, an electric suitcase base 100 as described in any of the above embodiments, and a running wheel assembly 300. The base 100 is disposed at the bottom of the suitcase body 200. The running wheel assembly 300 includes a front wheel 301 and a rear wheel 302, one of which is disposed at the end of the telescopic rod 30 extending from the mounting cavity 11, and the other is disposed on the suitcase body 200.

[0052] It is understandable that the electric luggage compartment also contains a motor, which can be positioned above the base 100, with the motor's output shaft parallel to the axis of the drive rod 21. The motor and the drive rod 21 can be connected by gear transmission, but this is not a limitation.

[0053] The electric luggage provided in this application adopts all the technical solutions of the electric luggage base 100 in the above embodiments, and therefore has at least all the beneficial effects brought about by the technical solutions of the above embodiments of the electric luggage base 100, which will not be repeated here.

[0054] 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. An electrically powered luggage base, characterized in that, The base includes: The base has an installation cavity; A telescopic drive mechanism, disposed in the mounting cavity, includes a drive rod and a slider; A telescopic rod is slidably disposed in the mounting cavity, with one end extending out of the mounting cavity and the other end connected to the slider. The drive rod is used to drive the slider to move the telescopic rod along the mounting cavity.

2. The motorized luggage base of claim 1, wherein, The slider is threadedly engaged with the drive rod; The telescopic rod has a receiving cavity, and the slider is located inside the receiving cavity.

3. The motorized luggage base of claim 1, wherein, A first limiting part is provided on the side wall of the mounting cavity, and a second limiting part is provided on the telescopic rod. The first limiting part is used to abut against the second limiting part to prevent the telescopic rod from continuing to extend out of the mounting cavity.

4. The motorized luggage base of claim 3, wherein, The first limiting part includes a sleeve structure and a raised edge structure. The raised edge structure is formed at one end of the sleeve structure. The sleeve structure is embedded in the mounting cavity, and the raised edge structure abuts against the end face of the seat.

5. The motorized luggage base of claim 4, wherein, The inner surface of the sleeve structure is in slidable contact with the telescopic rod.

6. The motorized luggage base of claim 4, wherein, The outer surface of the sleeve structure is provided with a snap-fit ​​protrusion, and the seat is provided with a snap-fit ​​groove that mates with the snap-fit ​​protrusion.

7. The motorized luggage base of any of claims 3-6, wherein, The second limiting part includes a plurality of limiting blocks, which are distributed circumferentially along the telescopic rod.

8. The motorized luggage base of claim 7, wherein, The side surface of the limiting block facing away from the telescopic rod can slide in contact with the side wall of the mounting cavity.

9. The motorized luggage base of claim 1, wherein, The seat also has a connecting plate for connecting the body of the electric luggage case.

10. An electrically powered luggage case characterized by, include: Box; The electric luggage base according to any one of claims 1-9 is disposed at the bottom of the luggage body; The driving wheel assembly includes a front wheel and a rear wheel, one of which is disposed at one end of the telescopic rod extending from the mounting cavity, and the other is disposed in the housing.

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