Gimbal wheel structure and mobile device

Abstract

The utility model relates to the technical field of universal wheel, disclose a universal wheel structure and mobile device, the universal wheel structure includes: mounting seat has accommodating cavity, bearing is inlayed in accommodating cavity, wheel board, its top is through the convex part adaptation and is connected in the inner ring of bearing, wheel sets up on wheel board for moving, limiting piece sets up at the bottom of mounting seat, and limiting piece at least partial extension reaches the below of wheel board for wheel board position limiting. Solveed how to reduce the height size problem of universal wheel.

Description

Technical Field

[0001] This utility model relates to the field of omnidirectional wheel technology, specifically to an omnidirectional wheel structure and a mobile device. Background Technology

[0002] In related technologies, in order to enable mobile devices to move in multiple directions and achieve omnidirectional rotation, omnidirectional wheels are usually installed on the mobile devices. However, the existing omnidirectional wheels have a large structural size, which significantly increases the overall height of the mobile devices equipped with omnidirectional wheels. This is not conducive to the miniaturization of mobile devices with omnidirectional rotation. Therefore, how to reduce the height of the omnidirectional wheels is an urgent problem to be solved. Utility Model Content

[0003] In view of this, the present invention provides a universal wheel structure and a mobile device to solve the problem of how to reduce the height of the universal wheel.

[0004] Firstly, this utility model provides a universal wheel structure, comprising: Mounting base with receiving cavity; The bearing is embedded in the receiving cavity; The wheel plate, the top of which is fitted into the inner ring of the bearing via a protrusion; Wheels, mounted on the wheel plate, are used for movement; A limiting member is disposed at the bottom of the mounting base, and the limiting member extends at least partially to the underside of the wheel plate, for limiting the wheel plate.

[0005] Beneficial effects: By embedding a bearing within the housing cavity of the mounting base, the wheel plate is engaged with the inner ring of the bearing via a protrusion during installation. This allows the wheel to rotate with the wheel plate through the bearing, enabling multi-directional movement. Simultaneously, a limiting component is provided on the mounting base to restrict the wheel plate from falling off. The overall structure is simple, facilitating the installation and removal of the wheel plate. Furthermore, the wheel plate can be entirely housed within the housing cavity, reducing the overall height and improving stability and space utilization. This is particularly beneficial when applied to external mobile devices, reducing their overall height and promoting the miniaturization of mobile devices with omnidirectional rotation capabilities.

[0006] In one alternative embodiment, the mounting base is a flange.

[0007] Beneficial effects: The mounting base uses a flange, which makes it easy to fix to external equipment for use.

[0008] In one optional embodiment, the protrusion includes a first annular portion and a second annular portion; the first annular portion is disposed on the top of the wheel plate, and the second annular portion is disposed on the top of the first annular portion; the outer diameter of the first annular portion is larger than the outer diameter of the second annular portion; the second annular portion is embedded in the inner ring of the bearing, and the outer periphery of the top of the first annular portion abuts against the bottom of the inner ring of the bearing.

[0009] Beneficial effects: The protrusion is formed by the first annular part and the second annular part being connected in sequence on the wheel plate to form a stepped structure. During installation, the second annular part is embedded in the inner ring of the bearing, while the top outer periphery of the first annular part abuts against the bottom of the inner ring of the bearing, forming a tight fit structure, improving stability, and preventing the outer ring of the bearing from contacting the wheel plate and increasing friction.

[0010] In one alternative embodiment, the second annular portion is interference-fitted with the inner ring of the bearing.

[0011] Beneficial effect: The second annular portion is interference-fitted with the inner ring of the bearing, which prevents the second annular portion from rotating relative to the inner ring of the bearing and improves stability.

[0012] In one alternative embodiment, the first annular portion, the second annular portion, and the wheel plate are integrally formed.

[0013] Beneficial effects: By integrally forming the first annular portion, the second annular portion, and the wheel plate, the overall structural strength is improved, thereby increasing the service life.

[0014] In one alternative embodiment, the limiting element is a screw that is threadedly connected to the mounting base, and the head of the screw extends at least partially below the wheel plate.

[0015] Beneficial effects: The limiting component uses screws, which are installed on the mounting base through threaded connection, and the head of the screw extends at least partially below the wheel plate to limit the wheel plate in the vertical direction, preventing the wheel plate from falling off. The screws are also easy to install and remove, facilitating assembly and maintenance.

[0016] In one optional embodiment, a plurality of limiting members are provided, and the plurality of limiting members are evenly spaced along the circumference of the mounting base.

[0017] Beneficial effects: By setting multiple limiting elements at even intervals around the circumference of the mounting base, stability is further improved.

[0018] In one alternative embodiment, the wheel is connected to the wheel plate via a bracket, and the wheel plate has a groove corresponding to the wheel.

[0019] Beneficial effects: The wheels are mounted on the wheel plate via brackets, and the top part of the wheels can be accommodated in the slots, which further reduces the overall height and improves stability.

[0020] In one alternative embodiment, the wheel is eccentrically disposed on the wheel plate.

[0021] Beneficial effects: By setting the wheels off-center on the wheel plate, that is, setting the wheels off-center from the wheel plate, when turning is required, the off-center setting will generate a frictional torque, which will "push" the wheel plane to automatically adjust to the same direction of movement, thus making turning very effortless and improving overall flexibility.

[0022] Secondly, this utility model also provides a mobile device, including the universal wheel structure as described in any of the first aspects. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of a universal wheel structure according to an embodiment of the present utility model from a first-view perspective. Figure 2 This is a schematic diagram of a universal wheel structure according to an embodiment of the present utility model from a second perspective. Figure 3 This is a schematic diagram of a universal wheel structure from a third perspective, according to an embodiment of the present utility model. Figure 4 for Figure 3 Sectional view at point AA.

[0025] Explanation of reference numerals in the attached figures: 1. Mounting base; 2. Receiving cavity; 3. Bearing; 4. Wheel plate; 5. Protrusion; 501. First annular part; 502. Second annular part; 6. Wheel; 7. Limiting element; 8. Bracket; 9. Slot. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 or an electrical 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 according to the specific circumstances.

[0029] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0030] The following is combined with Figures 1 to 4 The following describes embodiments of the present invention.

[0031] According to an embodiment of the present invention, one aspect provides a universal wheel structure, comprising: a mounting base 1 having a receiving cavity 2; a bearing 3 embedded in the receiving cavity 2; a wheel plate 4, the top of which is adapted to be snapped onto the inner ring of the bearing 3 via a protrusion 5; a wheel 6 disposed on the wheel plate 4 for movement; and a limiting member 7 disposed at the bottom of the mounting base 1, and the limiting member 7 at least partially extending below the wheel plate 4 for limiting the wheel plate 4.

[0032] It should be noted that the outer ring of bearing 3 is fixed to the inner wall of the receiving cavity 2.

[0033] In this embodiment, by embedding a bearing 3 in the receiving cavity 2 of the mounting base 1, the wheel plate 4 is engaged with the inner ring of the bearing 3 via the protrusion 5 during installation, so that the wheel 6 can rotate with the wheel plate 4 through the bearing 3 to achieve multi-directional movement. At the same time, a limiting member 7 is provided on the mounting base 1 to limit the bottom of the wheel plate 4 and prevent the wheel plate 4 from falling off. The overall structure is simple and facilitates the installation and removal of the wheel plate 4. In addition, the wheel plate 4 can be set entirely in the receiving cavity 2, thereby reducing the overall height and improving stability and space utilization. Especially when applied to external mobile devices, it can reduce the overall height of the external mobile device and facilitate the miniaturization of mobile devices with omnidirectional rotation function.

[0034] In one embodiment, such as Figures 1 to 3 As shown, mounting base 1 is a flange.

[0035] In this embodiment, the mounting base 1 adopts a flange, which facilitates fixing it to external equipment for use and improves strength.

[0036] In one embodiment, such as Figure 4 As shown, the protrusion 5 includes a first annular portion 501 and a second annular portion 502; the first annular portion 501 is disposed on the top of the wheel plate 4, and the second annular portion 502 is disposed on the top of the first annular portion 501; the outer diameter of the first annular portion 501 is larger than the outer diameter of the second annular portion 502; the second annular portion 502 is embedded in the inner ring of the bearing 3, and the outer periphery of the top of the first annular portion 501 abuts against the bottom of the inner ring of the bearing 3.

[0037] It should be noted that the inner diameters of the first annular portion 501 and the second annular portion 502 are the same.

[0038] In this embodiment, the protrusion 5 is formed by the first annular portion 501 and the second annular portion 502 connected sequentially on the wheel plate 4 to form a stepped structure. During installation, the second annular portion 502 is embedded in the inner ring of the bearing 3, while the top outer periphery of the first annular portion 501 abuts against the bottom of the inner ring of the bearing 3, forming a tightly fitted structure, improving stability, and preventing the outer ring of the bearing 3 from contacting the wheel plate 4 and increasing friction.

[0039] In one embodiment, the second annular portion 502 is interference-fitted with the inner ring of the bearing 3.

[0040] In this embodiment, the second annular portion 502 is interference-fitted with the inner ring of the bearing 3 to prevent relative rotation between the second annular portion 502 and the inner ring of the bearing 3, thereby improving stability.

[0041] In one embodiment, such as Figure 4 As shown, the first annular portion 501, the second annular portion 502, and the wheel plate 4 are integrally formed.

[0042] In this embodiment, the first annular portion 501, the second annular portion 502, and the wheel plate 4 are integrally formed, thereby improving the overall structural strength and service life.

[0043] In one embodiment, such as Figures 1 to 3 As shown, the limiting component 7 is a screw, which is threadedly connected to the mounting base 1, and the head of the screw extends at least partially below the wheel plate 4.

[0044] In this embodiment, the limiting component 7 is a screw, which is installed on the mounting base 1 by threaded connection, and the head of the screw extends at least partially below the wheel plate 4 to limit it in the vertical direction, preventing the wheel plate 4 from falling off. The screw is also easy to install and remove, and is convenient for assembly and maintenance.

[0045] Specifically, each screw in the mounting base 1 has a threaded hole at its bottom.

[0046] As an alternative implementation, one end of the limiting member 7 can be rotatably connected to the mounting base 1, and the other end can be a limiting end; the limiting end has a first position that rotates to the underside of the wheel plate 4 and a second position that rotates away from the underside of the wheel plate 4, which facilitates installation and disassembly and improves assembly efficiency.

[0047] In one embodiment, such as Figures 1 to 3 As shown, multiple limiting members 7 are provided, and the multiple limiting members 7 are evenly spaced along the circumference of the mounting base 1.

[0048] In this embodiment, stability is further improved by setting multiple limiting members 7 at even intervals around the mounting base 1.

[0049] In one embodiment, such as Figures 1 to 3 As shown, wheel 6 is connected to wheel plate 4 via bracket 8, and wheel plate 4 has a groove 9 corresponding to wheel 6.

[0050] In this embodiment, the wheel 6 is rotatably mounted on the wheel plate 4 via the bracket 8, and the top part of the wheel 6 can be accommodated in the slot 9, so as to further reduce the overall height and improve stability.

[0051] Specifically, the opening width of the slot 9 is greater than the width of the wheel 6, and there are two brackets 8 located on both sides of the slot 9, so that at least part of the top of the wheel 6 can be accommodated in the slot 9 during installation, thereby reducing the overall height.

[0052] In one embodiment, wheel 6 is eccentrically mounted on wheel plate 4.

[0053] In this embodiment, the wheel 6 is eccentrically set on the wheel plate 4, that is, the wheel 6 is set at a position off the axis of the wheel plate 4. When turning is required, a frictional torque is generated by the eccentric setting, which "pushes" the plane of the wheel 6 to automatically adjust to the same direction of movement, thereby making turning very effortless and improving the overall flexibility.

[0054] The specific installation and working principle of the universal wheel structure provided in this embodiment are as follows: During installation, firstly, the screws are removed, then the wheel plate 4 is embedded in the inner ring of the bearing 3 through the second annular part 502 with an interference fit, and the top of the first annular part 501 abuts against the bottom of the inner ring of the bearing 3. Then, the screw is connected to the threaded hole and the head of the screw extends to the bottom of the wheel plate to prevent the wheel plate 4 from falling off. Then, the wheel 6 is rotatably connected to the bracket 8 on the wheel plate 4, and the top part of the wheel 6 is located in the slot 9, further reducing the overall height, thereby completing the installation. It can be connected to the mobile device through the flange to realize the function of universal movement, so that the mobile device with this universal wheel structure is also relatively low in height.

[0055] According to an embodiment of the present invention, another aspect provides a mobile device including a caster wheel structure as described in any of the first aspects.

[0056] In this embodiment, the mobile device adopts the universal wheel structure of any embodiment of the first aspect. The specific structure of the universal wheel structure is the same as that of the universal wheel structure of any embodiment of the first aspect, so that the mobile device with the universal wheel structure has at least the same technical effect as the universal wheel structure described above. The specific principle is the same as that of any embodiment of the first aspect, and will not be described in detail here. The mobile device can move robots, material conveying equipment, etc.

[0057] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A universal wheel structure, characterized in that, include: Mounting base (1) has a receiving cavity (2); The bearing (3) is embedded in the receiving cavity (2); The wheel plate (4) has its top fitted into the inner ring of the bearing (3) via a protrusion (5); Wheels (6) are mounted on the wheel plate (4) for movement; A limiting member (7) is disposed at the bottom of the mounting base (1), and the limiting member (7) extends at least partially to the underside of the wheel plate (4) for limiting the wheel plate (4).

2. The universal wheel structure according to claim 1, characterized in that, The mounting base (1) is a flange.

3. The universal wheel structure according to claim 1, characterized in that, The protrusion (5) includes a first annular portion (501) and a second annular portion (502); the first annular portion (501) is disposed on the top of the wheel plate (4), and the second annular portion (502) is disposed on the top of the first annular portion (501); the outer diameter of the first annular portion (501) is larger than the outer diameter of the second annular portion (502); the second annular portion (502) is embedded in the inner ring of the bearing (3), and the outer periphery of the top of the first annular portion (501) abuts against the bottom of the inner ring of the bearing (3).

4. The universal wheel structure according to claim 3, characterized in that, The second annular portion (502) is interference-fitted with the inner ring of the bearing (3).

5. The universal wheel structure according to claim 3, characterized in that, The first annular portion (501), the second annular portion (502) and the wheel plate (4) are integrally formed.

6. The universal wheel structure according to claim 1, characterized in that, The limiting member (7) is a screw, which is threadedly connected to the mounting base (1), and the head of the screw extends at least partially below the wheel plate (4).

7. The universal wheel structure according to any one of claims 1 to 6, characterized in that, Multiple limiting members (7) are provided, and the multiple limiting members (7) are evenly spaced along the circumference of the mounting base (1).

8. The universal wheel structure according to claim 1, characterized in that, The wheel (6) is connected to the wheel plate (4) via a bracket (8), and the wheel plate (4) has a groove (9) corresponding to the wheel (6).

9. The universal wheel structure according to claim 1, characterized in that, The wheel (6) is eccentrically mounted on the wheel plate (4).

10. A mobile device, characterized in that, Includes the caster wheel structure as described in any one of claims 1 to 9.

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