Universal wheel mechanism for electric luggage case

Abstract

The utility model discloses a universal wheel mechanism for an electric luggage case. The universal wheel mechanism comprises a connecting body, a rotating body and a wheel body, a driving structure is arranged on the rotating body, and the wheel body is connected to an output shaft of the driving structure; a positioning structure is further connected to the rotating body, a protruding block is arranged on one of the positioning structure and the connecting body, a groove is formed in the other one of the positioning structure and the connecting body, the protruding block can be embedded into the groove, and when the protruding block is embedded into the groove, the rotating body cannot rotate relative to the connecting body; through the rotating body, the wheel body can move in any direction in the horizontal direction, and the good moving capacity is ensured; a positioning structure is arranged between the rotating body and the connecting body, and the rotating body cannot rotate when the luggage case needs to move along a straight line through the matching of the convex block and the groove, so that the wheel bodies can roll along the straight line, the sliding friction between the wheel bodies and the ground caused by the swinging of the wheel bodies in the moving process is avoided, and a better moving effect is ensured; and the service life of the wheel body can be prolonged.

Description

Technical Field

[0001] This utility model relates to the field of electric luggage technology, specifically to a universal wheel mechanism for electric luggage. Background Technology

[0002] The electric suitcase includes a suitcase body, drive wheels, a battery, a motor to drive the drive wheels, a motor control device connected to the motor, and a controller connected to the motor control device. The user sits on the suitcase and can easily move it by operating the controller, saving physical effort. The suitcase has two drive wheels, and the difference in speed between the two wheels allows for steering.

[0003] To ensure the reliability of steering by speed difference and to prevent deviation from the moving path when moving in a straight line, existing electric suitcases usually have their drive wheels set to not rotate. However, this means that when the electric function is not used, the suitcase can only be dragged in a specific posture, which is inconvenient and results in a poor user experience.

[0004] Based on the above, this utility model proposes a universal wheel mechanism for electric luggage, which can effectively solve one or more of the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a universal wheel mechanism for electric suitcases.

[0006] This utility model is achieved through the following technical solution:

[0007] A universal wheel mechanism for an electric suitcase includes a connecting body, a rotating body rotatably connected to the connecting body, and a wheel rotatably connected to the rotating body. The rotating body is provided with a drive structure, and the wheel is connected to the output shaft of the drive structure. The rotating body is also connected with a positioning structure. One of the positioning structure and the connecting body is provided with a protrusion, and the other is provided with a groove. The protrusion can be embedded in the groove. When the protrusion is embedded in the groove, the rotating body cannot rotate relative to the connecting body.

[0008] Preferably, the positioning structure includes a positioning member and a pressing member. One end of the positioning member is rotatably connected to the rotating body, and the other end is provided with a protrusion or groove. The pressing member is located above the positioning member, and one end of it is rotatably connected to the rotating body, while the other end extends in a direction away from the positioning member. The bottom surface of the pressing member is provided with a pressing part that can drive the positioning member to rotate downward during the rotation of the pressing member. The pressing part is provided with a positioning surface. When the positioning surface is in contact with the top surface of the positioning member, the force applied by the positioning member to the positioning surface is directed towards the rotation axis of the pressing member.

[0009] Preferably, a reset member is connected to the positioning member, and the reset member is used to drive the positioning member to rotate upward.

[0010] Preferably, the rotating body includes a rotating part, and the positioning structure is located on one side of the rotating part; the connecting body is provided with a rotating cavity, at least a portion of the rotating part is embedded in the rotating cavity, and a gap is provided between the outer side wall of the rotating part and the inner side wall of the rotating cavity.

[0011] Preferably, one of the rotating part and the rotating cavity is provided with a convex ring, and the other is provided with an annular groove, and at least a portion of the convex ring is embedded in the annular groove, and the portion of the convex ring embedded in the annular groove abuts against the annular groove.

[0012] Preferably, the rotating body is connected to the connecting body by bolts; the connecting body is provided with a threaded hole, the rotating body is provided with a through hole, and the bolt passes through the through hole and engages with the threaded hole.

[0013] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0014] This utility model discloses a universal wheel mechanism for an electric suitcase. It features a simple structure and ease of use. Through a rotating body, the wheels can move in any direction horizontally, ensuring good mobility. A positioning structure is provided between the rotating body and the connecting body. Through the cooperation of protrusions and grooves, when the suitcase needs to move in a straight line, the rotating body will not rotate, allowing the wheels to roll in a straight line. This prevents the wheels from wobbling during movement and causing sliding friction between the wheels and the ground, ensuring better mobility and extending the wheel's lifespan. When the suitcase needs to turn using a speed difference, the rotation of the rotating body will not cause it to deviate from the path, ensuring better mobility and improving the user experience. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of the positioning component of this utility model when it is in the first position;

[0017] Figure 3 This is a cross-sectional structural diagram of the positioning element of this utility model when it is in the second position;

[0018] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. For better illustration of this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the drawings for those skilled in the art. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0020] Example 1:

[0021] like Figures 1 to 4 As shown, this utility model provides a universal wheel mechanism for an electric suitcase, comprising a connecting body 1, a rotating body 2 rotatably connected to the connecting body 1, and a wheel 3 rotatably connected to the rotating body 2; the rotating body 2 is provided with a drive structure 4, and the wheel 3 is connected to the output shaft of the drive structure 4; the rotating body 2 is also connected with a positioning structure 5, one of the positioning structure 5 and the connecting body 1 is provided with a protrusion 51, and the other is provided with a groove 11. The protrusion 51 can be embedded in the groove 11. When the protrusion 51 is embedded in the groove 11, the rotating body 2 cannot rotate relative to the connecting body 12.

[0022] The connecting body 1 is used to connect to the suitcase body, so the connecting body 1 is fixed. The rotating body 2, which is rotatably connected to the connecting body 1, can rotate relative to the connecting body 1 during the movement of the suitcase. The driving structure 4 drives the wheel 3 to rotate, thereby realizing the electric drive of the suitcase movement.

[0023] This application enables the wheel 3 to move in any direction horizontally via the rotating body 2, ensuring good mobility. Furthermore, a positioning structure 5 is provided between the rotating body 2 and the connecting body 1. Through the cooperation of the protrusion 51 and the groove 11, when the suitcase needs to move in a straight line, the rotating body 2 will not rotate, allowing the wheel 3 to roll in a straight line. This prevents the wheel 3 from wobbling during movement and causing sliding friction between the wheel 3 and the ground, ensuring better mobility and extending the service life of the wheel 3. When the suitcase needs to turn using a speed difference, it will not deviate from the route due to the rotation of the rotating body 2, ensuring better mobility and improving the user experience.

[0024] In this embodiment, the protrusion 51 is located on the positioning structure 5, and the groove 11 is located on the connecting body 1. The number of grooves 11 is not one, so as to ensure that the positioning structure 5 can restrict the rotation of the rotating body 2 in multiple positions. In other embodiments, the protrusion 51 may be located on the connecting body 1, and the groove 11 may be located on the positioning structure 5.

[0025] The positioning structure 5 includes a positioning member 52 and a pressing member 53. One end of the positioning member 52 is rotatably connected to the rotating body 2, and the other end is provided with a protrusion 51. The pressing member 53 is located above the positioning member 52, and one end of it is rotatably connected to the rotating body 2, while the other end extends in a direction away from the positioning member 52. The bottom surface of the pressing member 53 is provided with a pressing part 531 that can drive the positioning member 52 to rotate downward during the rotation of the pressing member 53. The pressing part 531 is provided with a positioning surface. When the positioning surface is in contact with the top surface of the positioning member 52, the force applied by the positioning member 52 to the positioning surface is directed towards the rotation axis of the pressing member 53.

[0026] like Figure 2 As shown, when the positioning member 52 is in the first position, the protrusion 51 is embedded in the groove 11. At this time, the rotating body 2 cannot rotate relative to the connecting body 1. The positioning structure 5 plays a good positioning role between the rotating body 2 and the connecting body 1.

[0027] like Figure 3 As shown, when the positioning member 52 is in the second position, the protrusion 51 disengages from the groove 11. At this time, the rotating body 2 can rotate relative to the connecting body 1. The positioning surface on the pressing member 53 is attached to the top surface of the positioning member 52. Since the force applied by the positioning member 52 to the positioning surface is directed towards the rotation axis of the pressing member 53, an interlock is formed between the pressing member 53 and the positioning member 52 without applying external force to the pressing member 53. This maintains the positioning member 52 in the second position, and thus the positioning member 52 will not rotate upward on its own after being in the second position. This ensures that the protrusion 51 will not be embedded in the groove 11, and that the rotating body 2 can rotate relative to the connecting body 1.

[0028] A reset component 54 is connected to the positioning component 52, and the reset component 54 is used to drive the positioning component 52 to rotate upward.

[0029] The reset member 54 provides an upward rotational force to the positioning member 52, ensuring that after the user rotates the pressing member 53 upward, the positioning member 52 can rotate from the second position to the first position to restrict the rotation of the rotating body 2, simplifying the operation and improving the convenience of the user.

[0030] In this embodiment, the reset member 54 is a spring located below the positioning member 52, with the top end of the spring connected to the positioning member 52 and the other end connected to the rotating body 2; in other embodiments, the reset member 54 may also be a torsion spring, which is sleeved on the shaft of the rotating body 2 and rotated on the positioning member 52, with one side of the torsion spring connected to the positioning member 52 and the other end connected to the rotating body 2.

[0031] The rotating body 2 includes a rotating part 21, and the positioning structure 5 is located on one side of the rotating part 21; the connecting body 1 is provided with a rotating cavity 12, at least part of the rotating part 21 is embedded in the rotating cavity 12, and there is a gap between the outer side wall of the rotating part 21 and the inner side wall of the rotating cavity 12.

[0032] By bringing the rotating part 21 into the rotating cavity 12, it is possible to ensure that the rotating part 21 will not wobble in the vertical direction. This not only improves the service life of the caster wheel, but also ensures that when the protrusion 51 is embedded in the groove 11, the protrusion 51 will not fall out of the groove 11 due to the wobble of the rotating body 2 relative to the connecting body 1. This ensures that the positioning structure 5 can better achieve the positioning function between the rotating body 2 and the connecting body 1.

[0033] One of the rotating part 21 and the rotating cavity 12 is provided with a protruding ring 22, and the other is provided with an annular groove 13. At least part of the protruding ring 22 is embedded in the annular groove 13, and the part of the protruding ring 22 embedded in the annular groove 13 abuts against the annular groove 13.

[0034] The cooperation between the convex ring 22 and the annular groove 13 ensures that the rotating body 2 will not move relative to the connecting body 1 in the horizontal direction, thus ensuring a high degree of coaxiality between the rotating part 21 and the rotating cavity 12. This better ensures that the protrusion 51 can be embedded in the groove 11, thereby improving the positioning reliability of the positioning structure 5.

[0035] The rotating body 2 is connected to the connecting body 1 by bolts 6; the connecting body 1 is provided with a threaded hole 14, and the rotating body 2 is provided with a through hole 23. The bolts 6 pass through the through hole 23 and engage with the threaded hole 14.

[0036] The rotating body 2 is connected to the connecting body 1 by bolt 6, and bolt 6 directly engages with the connecting body 1, which reduces the connection difficulty and simplifies the structure, reduces production costs, and only requires one bolt to achieve the connection, which also improves installation efficiency.

[0037] Based on the description and drawings of this utility model, those skilled in the art can easily manufacture or use the universal wheel mechanism for electric luggage of this utility model, and can produce the positive effects described in this utility model.

[0038] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0039] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A universal wheel mechanism for an electric suitcase, characterized in that: The assembly includes a connecting body (1), a rotating body (2) rotatably connected to the connecting body (1), and a wheel (3) rotatably connected to the rotating body (2). The rotating body (2) is provided with a driving structure (4), and the wheel (3) is connected to the output shaft of the driving structure (4). The rotating body (2) is also connected with a positioning structure (5). One of the positioning structure (5) and the connecting body (1) is provided with a protrusion (51), and the other is provided with a groove (11). The protrusion (51) can be embedded in the groove (11). When the protrusion (51) is embedded in the groove (11), the rotating body (2) cannot rotate relative to the connecting body (1).

2. The universal wheel mechanism for an electric suitcase according to claim 1, characterized in that: The positioning structure (5) includes a positioning member (52) and a pressing member (53). One end of the positioning member (52) is rotatably connected to the rotating body (2), and the other end is provided with a protrusion (51) or a groove (11). The pressing member (53) is located above the positioning member (52), and one end of it is rotatably connected to the rotating body (2), while the other end extends away from the positioning member (52). The bottom surface of the pressing member (53) is provided with a pressing part (531) that can drive the positioning member (52) to rotate downward during the rotation of the pressing member (53). The pressing part (531) is provided with a positioning surface. When the positioning surface is in contact with the top surface of the positioning member (52), the force applied by the positioning member (52) to the positioning surface is directed towards the rotation axis of the pressing member (53).

3. The universal wheel mechanism for an electric suitcase according to claim 2, characterized in that: A reset member (54) is connected to the positioning member (52), and the reset member (54) is used to drive the positioning member (52) to rotate upward.

4. The universal wheel mechanism for an electric suitcase according to claim 1, characterized in that: The rotating body (2) includes a rotating part (21), and the positioning structure (5) is located on one side of the rotating part (21); the connecting body (1) is provided with a rotating cavity (12), at least part of the rotating part (21) is embedded in the rotating cavity (12), and there is a gap between the outer side wall of the rotating part (21) and the inner side wall of the rotating cavity (12).

5. The universal wheel mechanism for an electric suitcase according to claim 4, characterized in that: One of the rotating part (21) and the rotating cavity (12) is provided with a convex ring (22), and the other is provided with an annular groove (13). At least part of the convex ring (22) is embedded in the annular groove (13), and the part of the convex ring (22) embedded in the annular groove (13) abuts against the annular groove (13).

6. The universal wheel mechanism for an electric suitcase according to claim 1, characterized in that: The rotating body (2) is connected to the connecting body (1) by bolts (6); the connecting body (1) is provided with a threaded hole (14), the rotating body (2) is provided with a through hole (23), and the bolt (6) passes through the through hole (23) and engages with the threaded hole (14).

Images