Omnidirectional wheel

Abstract

The utility model provides an omnidirectional wheel which comprises a wheel framework, rolling wheels and a wheel hub cover, and the rolling wheels are evenly arranged on the periphery of the wheel framework. The wheel framework comprises two half frameworks, the two hub covers are arranged on the two sides of the wheel framework respectively, the hub covers and the two sides of the wheel framework are assembled in a positioning mode, the two half frameworks are arranged at the assembly position, the hub covers and the wheel framework are coaxially arranged, and a driving installation position is arranged between the hub covers and the wheel framework. According to the utility model, not only is the assembly stability of the two half frameworks ensured, but also the assembly and the maintenance are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of omnidirectional wheels, in particular to an omnidirectional wheel. Background Art

[0002] Omnidirectional wheels are a special wheel design that can move freely and directly in any specified direction on a plane. They are widely used in robots, carts and other fields.

[0003] The omnidirectional wheel has a number of rolling wheels evenly spaced around its circumference. These rolling wheels can independently roll sideways, allowing the omnidirectional wheel to roll instead of slide during both linear motion and cornering, significantly reducing friction. In one design, the rolling wheels include large and small interlaced wheels. The latest iteration of this approach redesigns the mounting framework for the rolling wheels, making it easier to assemble and maintain. This requires splitting the original framework into two symmetrical halves, which lack a connecting structure to securely connect the two halves. Utility Model Content

[0004] In order to solve the above problems in the prior art, the utility model provides an omnidirectional wheel that can achieve a stable connection between two half-frames.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] In a first aspect, the present invention provides an omnidirectional wheel, comprising a wheel frame, rolling wheels and a hub cover, wherein the rolling wheels are evenly arranged around the periphery of the wheel frame;

[0007] The wheel frame includes two half frames, and the hub cover is respectively provided with one on both sides of the wheel frame. The hub cover is positioned and assembled with both sides of the wheel frame and the assembly position includes two half frames. The hub cover is coaxially arranged with the wheel frame, and the middle is a drive installation position.

[0008] The beneficial effects of the present invention are that the detachable connection of the two half-frames is achieved through the positioning assembly of the hub cover and the wheel frame, the surface-fitting assembly method of the hub cover and the wheel frame ensures the assembly stability of the two half-frames, and assembly through both sides of the hub cover also facilitates assembly and maintenance.

[0009] Optionally, the wheel frame includes an annular portion located in the middle, the annular portion is provided with a plurality of first locking holes extending vertically therethrough, and the two hubcaps are respectively provided with second locking holes corresponding to the first locking holes;

[0010] There is at least one first locking hole on each half-frame. The hub cover is attached to the annular portion and is locked and connected to the annular portion through a locking member, the first locking hole and the second locking hole.

[0011] Optionally, the first locking holes are evenly distributed on the annular portion and there are multiple first locking holes on each half-skeleton.

[0012] Optionally, the wheel frame further comprises a plurality of U-shaped lateral portions uniformly extending outward from the periphery of the annular portion, and the rolling wheels are mounted on the lateral portions;

[0013] The first locking hole is located at the connection between the lateral portion and the annular portion.

[0014] As can be seen from the above description, the locking holes are arranged in an area of ​​the wheel frame with high mechanical strength to ensure the mechanical performance of the entire omnidirectional wheel.

[0015] Optionally, the locking accessory includes an operating member and a fastener, the operating member passes through the second locking hole on the hub cover on the first side, the first locking hole on the annular portion, and the second locking hole on the hub cover on the second side and is locked and connected to the fastener located on the outside of the hub cover on the second side.

[0016] Optionally, the hub cover is provided with mounting grooves for accommodating the operating member head and the fastener, respectively, and the second locking hole is provided through the mounting grooves.

[0017] As can be seen from the above description, the mounting groove accommodates the operating member head and the fastener, thereby ensuring that the surfaces on both sides of the omnidirectional wheel are flat.

[0018] Optionally, the fastener has an edge, and the mounting groove is engaged with the edge of the fastener.

[0019] As can be seen from the above description, the mounting groove is used to hold the fastener, so that only one tool is needed to achieve locking during assembly and disassembly, thereby further facilitating assembly and disassembly.

[0020] Optionally, a disassembly notch is provided at the position where the hub cover is attached to the annular portion.

[0021] As can be seen from the above description, the disassembly and assembly notch facilitates the insertion of a disassembly and assembly tool to lift the hub cover, thereby achieving rapid disassembly and assembly of the hub cover and the wheel frame.

[0022] Optionally, the hub cover is provided with a positioning protrusion corresponding to the first locking hole on the fitting surface with the wheel frame, the positioning protrusion is cooperatively connected with the first locking hole, and the second locking hole is provided through the positioning protrusion.

[0023] According to the above description, the hub cover and the wheel frame are pre-fixed by the cooperation and connection between the positioning protrusion and the first locking hole.

[0024] Optionally, the surface of the scroll wheel has patterns. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a disassembled schematic diagram of an omnidirectional wheel according to an embodiment of the present utility model;

[0026] Figure 2 for Figure 1 A magnified schematic diagram of area A in the middle;

[0027] Figure 3 A perspective schematic diagram of a wheel frame according to an embodiment of the present utility model;

[0028] Figure 4 This is a disassembled schematic diagram of a wheel frame according to an embodiment of the present utility model;

[0029] Figure 5 This is a disassembled schematic diagram of a wheel frame according to another embodiment of the present invention.

[0030] Description of reference numerals:

[0031] 1. Wheel frame; 11. Half frame; 12. Ring portion; 121. Drive mounting position; 122. First locking hole; 13. Side portion;

[0032] 2. Rolling wheel; 21. Large wheel; 22. Small wheel; 23. Pattern;

[0033] 3. Hub cover; 31. Second locking hole; 32. Mounting slot; 33. Disassembly notch; 34. Positioning protrusion.

[0034] 4. Lock accessories. DETAILED DESCRIPTION

[0035] To better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0036] Example 1

[0037] Please refer to Figures 1 to 4The present invention provides an omnidirectional wheel, comprising a wheel frame 1, rolling wheels 2, and a hubcap 3. The rolling wheels 2 are evenly arranged around the wheel frame 1. In this embodiment, the rolling wheels 2 include alternating large wheels 21 and small wheels 22. The number of large wheels 21 and small wheels 22 is six, respectively, to enable the omnidirectional wheel to achieve lateral rolling in any position. In other embodiments, the number of large wheels 21 and small wheels 22 may be determined based on the overall size of the omnidirectional wheel, such as five or eight of each.

[0038] like Figure 4 As shown, the wheel frame 1 includes two half frames 11. In this embodiment, the two half frames 11 are symmetrically arranged. Figure 1 As shown, a hub cover 3 is provided on each side of the wheel frame 1. The hub cover 3 is positioned and assembled with both sides of the wheel frame 1 and the assembly position includes two half-frames 11. Therefore, after the hub cover 3 and the wheel frame 1 are positioned and assembled, the assembly of the two half-frames 11 is realized, thereby realizing the detachable connection of the two half-frames 11.

[0039] The hub cover 3 is coaxially arranged with the wheel frame 1 , and the middle is a drive mounting position 121 for mounting relevant components that can drive the omnidirectional wheel to rotate, such as a mounting flange and the like.

[0040] Therefore, since no other installation components are required, the hub covers 3 on both sides are reused to assemble the two half skeletons 11, which reduces the number of parts, reduces the overall complexity and weight, and the hub cover 3 is located on the surface of the omnidirectional wheel, so the assembly is more convenient, and therefore it is also easy to assemble and maintain.

[0041] Example 2

[0042] Please refer to Figures 1 to 4 The present invention provides an omnidirectional wheel. Based on the above embodiment 1, the structure of the entire omnidirectional wheel is further defined as follows:

[0043] like Figure 3 It can be seen that the wheel frame 1 includes an annular portion 12 in the middle and a plurality of U-shaped lateral portions 13 extending uniformly outward from the periphery of the annular portion 12, and the rolling wheel 2 is mounted on the lateral portion 13. One implementation method is to form a position for mounting the small wheel 22 inside the U-shaped lateral portion 13, and to form a position for mounting the large wheel 21 between two adjacent lateral portions 13. For details, see Figure 1 It is known.

[0044] like Figure 3As shown, the annular portion 12 is provided with a plurality of first locking holes 122 running through it from top to bottom, and each half frame 11 has at least one first locking hole 122. In a preferred embodiment of this embodiment, the first locking holes 122 are evenly distributed on the annular portion 12 and each half frame 11 has a plurality of first locking holes 122, such as Figure 3 There are six first locking holes 122 in total, so as to ensure the assembly stability of the two half-frames 11.

[0045] Reference Figure 2 As can be seen, the two hubcaps 3 are each provided with a second locking hole 31 corresponding to the first locking hole 122. The hubcaps 3 are attached to the annular portion 12 and are locked to the annular portion 12 via the locking attachment 4, the first locking hole 122, and the second locking hole 31. Specifically, the locking attachment 4 includes an operating member and a fastener. The operating member passes through the second locking hole 31 on the hubcap 3 on the first side, the first locking hole 122 on the annular portion 12, and the second locking hole 31 on the hubcap 3 on the second side, and is locked to the fastener located on the outside of the hubcap 3 on the second side, thereby achieving the positioning and assembly of the two half-skeletons 11. The hubcaps 3 are each provided with mounting grooves 32 for accommodating the operating member head and the fastener. The second locking hole 31 is provided through the mounting grooves 32, ensuring that the surfaces on both sides of the omnidirectional wheel are flat. At the same time, a disassembly notch 33 is provided at the position where the hub cover 3 is attached to the annular portion 12, which facilitates the insertion of a disassembly tool to lift the hub cover 3, thereby realizing rapid disassembly and assembly of the hub cover 3 and the wheel frame 1.

[0046] The fastener has an edge, and the mounting groove 32 engages with the edge of the fastener. Thus, the fastener is fixed in the mounting groove 32, and during assembly and disassembly, only one tool is needed to control the head of the operating member to achieve locking. This eliminates the need for two tools to separately clamp the operating member and the fastener, further facilitating assembly and disassembly.

[0047] Therefore, in this embodiment, a specific example of a locking accessory 4 is provided: the operating part in the locking accessory 4 is a semi-polished bolt, the head of which is a round head with an inner hexagon, and the fastener is a hexagonal nut, which is located in the mounting groove 32 with a hexagonal countersunk groove on the second side hub cover 3. The semi-polished bolt passes through the second locking hole 31 on the first side of itself, the first locking hole 122 and the second locking hole 31 on the second side from the mounting groove 32 of the first side hub cover 3 and is locked with the hexagonal nut. After locking, the head of the semi-polished bolt is located in the mounting groove 32 of the other hub cover 3, thereby realizing the assembly of the hub cover 3 and the wheel frame 1.

[0048] like Figure 3 As shown, the first locking hole 122 is located at the connection between the lateral portion 13 and the annular portion 12 , where the surface area is large and the mechanical strength is high, and the opening design will not affect the mechanical performance of the omnidirectional wheel.

[0049] The surface of the rolling wheel 2 has a pattern 23, such as a wavy pattern arranged along the overall rotation direction of the omnidirectional wheel in this embodiment, which can reduce the vibration and noise during forward and lateral walking without affecting the grip of walking.

[0050] Example 3

[0051] Please refer to Figures 1 to 4 The present invention provides an omnidirectional wheel. Based on the above embodiment 2, the hub cover 3 is further limited as follows:

[0052] like Figure 2 As shown, the hubcap 3 is provided with a positioning protrusion 34 corresponding to the first locking hole 122 on the contact surface with the wheel frame 1. The positioning protrusion 34 is engaged with the first locking hole 122, and the second locking hole 31 is provided through the positioning protrusion 34. In conjunction with the second embodiment, it can be seen that at the position corresponding to the first locking hole 122 on the hubcap 3, there is an external mounting groove 32 and an internal positioning protrusion 34. The two are coaxial, and the second locking hole 31 passes through the positioning protrusion 34 from the mounting groove 32. Therefore, the hubcap 3 and the wheel frame 1 are pre-fixed through the interference fit between the positioning protrusion 34 and the first locking hole 122.

[0053] Example 4

[0054] Please refer to Figure 5 , the utility model provides an omnidirectional wheel, compared with Figures 1 to 4 For the omnidirectional wheel provided, the hub cover 3 in this embodiment is not provided with the positioning protrusion 34 , and the rest is referred to the relevant description in the above embodiments 1 to 2.

[0055] In summary, the omnidirectional wheel of the present invention not only achieves a stable connection between the two half-frames 11, but also facilitates assembly and maintenance.

[0056] In the description of this utility model, it should be understood that 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 the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0057] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0058] In the present invention, unless otherwise expressly specified or limited, when a first feature is “above” or “below” a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above,” “above,” or “above” a second feature, it may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is “below,” “below,” or “below” a second feature, it may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0059] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0060] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An omnidirectional wheel, characterized in that: It comprises a wheel frame, rolling wheels and a hub cover, wherein the rolling wheels are evenly arranged around the periphery of the wheel frame; The wheel frame includes two half frames, and the hub cover is respectively provided with one on both sides of the wheel frame. The hub cover is positioned and assembled with both sides of the wheel frame and the assembly position includes two half frames. The hub cover is coaxially arranged with the wheel frame, and the middle is a drive installation position.

2. The omnidirectional wheel according to claim 1, characterized in that: The wheel frame includes an annular portion located in the middle, the annular portion is provided with a plurality of first locking holes extending vertically therethrough, and the two hubcaps are respectively provided with second locking holes corresponding to the first locking holes; There is at least one first locking hole on each half-frame. The hub cover is attached to the annular portion and is locked and connected to the annular portion through a locking member, the first locking hole and the second locking hole.

3. The omnidirectional wheel according to claim 2, characterized in that: The first locking holes are evenly distributed on the annular portion and there are multiple first locking holes on each half-frame.

4. The omnidirectional wheel according to claim 3, characterized in that: The wheel frame further includes a plurality of U-shaped lateral portions uniformly extending outward from the periphery of the annular portion, and the rolling wheels are mounted on the lateral portions; The first locking hole is located at the connection between the lateral portion and the annular portion.

5. The omnidirectional wheel according to any one of claims 2 to 4, characterized in that: The locking accessory includes an operating member and a fastener. The operating member passes through the second locking hole on the hub cover on the first side, the first locking hole on the annular portion, and the second locking hole on the hub cover on the second side and is locked and connected to the fastener located on the outside of the hub cover on the second side.

6. The omnidirectional wheel according to claim 5, characterized in that: The hub cover is provided with mounting grooves for accommodating the operating member head and the fastener, respectively, and the second locking hole is provided through the mounting grooves.

7. The omnidirectional wheel according to claim 6, characterized in that: The fastener has an edge, and the mounting groove is clamped with the edge of the fastener.

8. The omnidirectional wheel according to any one of claims 2 to 4, characterized in that: A disassembly notch is provided at the position where the hub cover is attached to the annular portion.

9. The omnidirectional wheel according to any one of claims 2 to 4, characterized in that: The hub cover is provided with a positioning protrusion corresponding to the first locking hole on the fitting surface with the wheel frame. The positioning protrusion is matched with the first locking hole, and the second locking hole is provided through the positioning protrusion.

10. The omnidirectional wheel according to claim 1, characterized in that: The surface of the rolling wheel has patterns.

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