Novel sweeper universal wheel structure

Abstract

The utility model relates to a novel sweeper universal wheel structure which comprises a wheel body, an annular plane arranged in a closed mode is formed on the circumferential face of the wheel body, the annular plane is attached to the ground, and the annular plane is arranged on the circumferential face of the wheel body, so that when the universal wheel structure makes contact with the ground, point contact is changed into line contact, and when the universal wheel structure makes contact with the soft ground, line contact is changed into line contact. Therefore, the sweeping robot is kept in a horizontal state, and the sweeping is convenient.

Description

Technical Field

[0001] This utility model belongs to the field of sweeping robot technology, specifically relating to a novel sweeping robot universal wheel structure. Background Technology

[0002] Currently, most existing sweeping robots have spherical wheels with an arc-shaped contact surface with the ground, such as... Figure 1 As shown, the spherical casters make point contact with the ground, causing them to sink deeply when moving on soft surfaces such as carpets, making it difficult for the machine to maintain a level position. This hinders cleaning. To solve this problem, this solution was developed. Utility Model Content

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a new type of sweeper universal wheel structure, in which the universal wheel and the contact surface are in line contact.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a novel sweeper universal wheel structure, including a wheel body, wherein a closed annular plane is formed on the circumference of the wheel body, and the annular plane is in contact with the ground.

[0005] Furthermore, a convex ring is formed on the circumferential surface of the wheel body, and the annular plane is located on the surface of the convex ring.

[0006] Furthermore, a through-hole is formed in the middle of the wheel body.

[0007] Furthermore, the omnidirectional wheel structure also includes a rotating disk, the bottom surface of which has an installation notch, a rotating shaft is provided in the installation notch, the wheel body is located in the installation notch, and the rotating shaft passes through a shaft hole.

[0008] Furthermore, mounting grooves are formed at the two openings of the shaft hole, and a cover is provided in the mounting groove.

[0009] Furthermore, a rotating column is formed at the upper end of the rotating disk.

[0010] Furthermore, shaft end receiving grooves are formed on both sides of the mounting notch, and both ends of the rotating shaft are inserted into the two shaft end receiving grooves by interference fit.

[0011] Furthermore, multiple strip-shaped protrusions are formed on the side wall of the shaft end receiving groove, and the multiple strip-shaped protrusions are chamfered near the lower surface of the rotating disk.

[0012] Furthermore, the rotating disk includes a base, the mounting notch is located on the base, the mounting notch penetrates the lower surface of the base and one side wall of the base, a protrusion is formed on the upper surface of the base, and the rotating column is located on the upper surface of the protrusion.

[0013] Furthermore, the side of the mounting notch that contacts the annular plane of the wheel body is an arc surface.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This invention features an annular plane on the circumference of the wheel, which changes the contact between the omnidirectional wheel and the ground from point contact to line contact. This prevents the robot from sinking into soft surfaces, allowing it to remain horizontal and facilitating cleaning. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of the existing wheel body mentioned in the background art of this utility model;

[0017] Figure 2 This is a front view structural diagram of Embodiment 1 of the present utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of Embodiment 1 of the present utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the wheel body in Embodiment 1 of this utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the rotating disk in this utility model;

[0021] Figure 6 This is a three-dimensional structural diagram of the rotating disk in this utility model from another direction;

[0022] Figure 7 This is a front view structural diagram of Embodiment 2 of this utility model.

[0023] The markings in the diagram are: 1. Wheel body; 11. Annular plane; 12. Convex ring; 13. Shaft hole; 131. Mounting groove; 2. Rotating disk; 21. Mounting notch; 22. Shaft end receiving groove; 221. Strip protrusion; 23. Boss; 231. Rotating column; 24. Rotating shaft; 25. Cover. Detailed Implementation

[0024] To make the above-mentioned features and advantages of this utility model more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings for detailed explanation.

[0025] Example 1

[0026] like Figures 2-6 As shown, this embodiment provides a novel sweeper universal wheel structure, including a wheel body 1 and a rotating disk 2.

[0027] A raised ring 12 is formed on the circumference of the wheel body 1, and an annular plane 11 is located on the surface of the raised ring 12. A shaft hole 13 is formed in the middle of the wheel body 1, and mounting grooves 131 are formed at the two openings of the shaft hole 13.

[0028] The bottom surface of the rotating disk 2 has an installation notch 21, and a rotating shaft 24 is provided inside the installation notch 21. Specifically, the rotating disk 2 includes a base, the installation notch 21 is located on the base, the installation notch 21 penetrates the lower surface of the base and one side wall of the base, the wheel body 1 is located inside the installation notch 21, and the side of the installation notch 21 that contacts the annular plane 11 of the wheel body 1 is an arc surface to prevent foreign objects from entering. The rotating shaft 24 passes through the shaft hole 13, and the rotating shaft 24 is provided with a cover 25 on both sides of the shaft hole 13. The two covers 25 are respectively located in the mounting groove 131 to cover the opening of the shaft hole 13 and prevent dust from entering.

[0029] Preferably, shaft end receiving grooves 22 are formed on both sides of the mounting notch 21. The two ends of the rotating shaft 24 are inserted into the two shaft end receiving grooves 22 by interference fit. Multiple strip-shaped protrusions 221 are formed on the side wall of the shaft end receiving groove 22. The multiple strip-shaped protrusions 221 are chamfered near the lower surface of the rotating disk 2. Under the action of the gravity of the sweeping robot, the rotating shaft 24 will be tightly locked in the shaft end receiving groove 22.

[0030] A rotating column 231 is formed at the upper end of the rotating disk 2. Specifically, a boss 23 is formed on the upper surface of the base, and the rotating column 231 is located on the upper surface of the boss 23. The rotating column 231 is used to extend into and rotatably connect to the inside of the sweeping robot. A rotating wheel is provided at the upper end of the rotating column 231. The circumferential surface of the rotating wheel has an annular rotating groove. The rotating wheel is controlled to rotate by belt drive or other transmission methods, thereby realizing the rotation of the rotating disk 2 and the wheel body 1.

[0031] This solution involves setting a convex ring 12 on the circumference of the wheel body 1. The circumference of the convex ring 12 is an annular plane 11, which changes the contact between the omnidirectional wheel structure and the ground from point release to line contact. When in contact with soft ground, it will not sink in, allowing the sweeping robot to maintain a horizontal state for easy cleaning.

[0032] Example 2

[0033] like Figures 5-7 As shown, the difference between this embodiment and embodiment 1 is that the wheel body 1 does not have a convex ring 12, and the annular plane 11 is directly set in the middle of the circumference of the wheel body 1.

[0034] The foregoing has shown and described the basic principles and main features of this invention, as well as its advantages. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications can be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.

Claims

1. A novel omnidirectional wheel structure for a sweeping machine, characterized in that: The device includes a wheel body, the circumferential surface of which forms a closed annular plane that is in contact with the ground; the circumferential surface of the wheel body also forms a convex ring, and the annular plane is located on the surface of the convex ring.

2. The novel sweeper universal wheel structure according to claim 1, characterized in that: The wheel body has a through-hole formed in the middle.

3. The novel sweeper universal wheel structure according to claim 2, characterized in that: The omnidirectional wheel structure also includes a rotating disk, the bottom surface of which has an installation notch, a rotating shaft is provided in the installation notch, the wheel body is located in the installation notch, and the rotating shaft passes through a shaft hole.

4. The novel sweeper universal wheel structure according to claim 3, characterized in that: The shaft hole has two openings with mounting grooves, and a cover is provided in the mounting groove.

5. The novel sweeper universal wheel structure according to claim 3, characterized in that: A rotating column is formed at the upper end of the rotating disk.

6. The novel sweeper universal wheel structure according to claim 3, characterized in that: Shaft end receiving grooves are formed on both sides of the installation notch, and the two ends of the rotating shaft are inserted into the two shaft end receiving grooves by interference fit.

7. The novel sweeper universal wheel structure according to claim 6, characterized in that: Multiple strip-shaped protrusions are formed on the side wall of the shaft end receiving groove, and the multiple strip-shaped protrusions are chamfered near the lower surface of the rotating disk.

8. The novel sweeper universal wheel structure according to claim 5, characterized in that: The rotating disk includes a base, the mounting notch is located on the base, the mounting notch penetrates the lower surface of the base and one side wall of the base, a protrusion is formed on the upper surface of the base, and the rotating column is located on the upper surface of the protrusion.

9. A novel sweeper universal wheel structure according to claim 8, characterized in that: The side of the mounting notch that contacts the annular plane of the wheel is an arc surface.

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