Electric universal wheel

Abstract

The utility model discloses an electric universal wheel which comprises a fixing seat, a bearing seat is fixedly installed at the bottom of the fixing seat, a connecting frame is connected to the bottom of the bearing seat, a moving wheel is arranged on the inner side of the connecting frame, a first threaded groove is formed in the side wall of the moving wheel, a positioning bolt is arranged on the inner side of the first threaded groove, and a positioning groove is formed in the inner side of the positioning bolt. An annular groove is formed in the upper surface of the fixing base, and the bottom of the annular groove communicates with a through hole. Compared with an existing mode that steering of the whole universal wheel is achieved through manpower, the structure does not need manual operation any more, steering treatment of the universal wheel can be achieved through work of the motor, more convenience and rapidness are achieved, practicability is higher, and practicability is higher. When the motor works, the bearing seat rotates along with the motor, then rotation of the connecting frame can be achieved through rotation of the bearing seat, and then subsequent steering treatment of the universal wheel can be conveniently achieved.

Description

Technical Field

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

[0002] Casters include movable casters and fixed casters. Movable casters are so-called universal wheels, and their structure allows 360° rotation; fixed casters do not have a rotating structure and cannot rotate. These two types of casters are generally used together and are often used for cargo handling and transportation. Because universal wheels are flexible in rotation, safe and reliable, and have the properties of wear resistance, impact resistance, chemical corrosion resistance, low temperature resistance, high temperature resistance, no wheel marks when driving, floor protection, and low noise, they are mainly suitable for installation in furniture such as tables and chairs, beds, cabinets, sofas, and various trolleys, medical equipment, instruments, meters, intelligent production lines, intelligent robots, smart suitcases, and other daily life fields, and their applications are becoming more and more widespread;

[0003] For example, the utility model disclosed in the authorization announcement number CN211032032U directly drives the electric universal wheel with electric energy, eliminating the hydraulic transmission system and two sets of hydraulic motors, avoiding the disadvantage that the hydraulic system leaks and easily pollutes the environment, improving the transmission efficiency and energy utilization rate, and reducing the cost. It overcomes the shortcomings of the prior art and simplifies the electrical control. At present, most universal wheels are passively rotated when turning, that is, they can only be turned under the action of force, which leads to the need to control them manually, which is not only not practical, but also difficult to accurately control the turning of the universal wheel. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the utility model provides an electric universal wheel, which can solve the problem that the prior art universal wheel directly drives the electric universal wheel with electric energy, eliminates the hydraulic transmission system and two sets of hydraulic motors, avoids the disadvantage that the hydraulic system leaks out and easily pollutes the environment, improves the transmission efficiency and energy utilization rate, and reduces the cost. The shortcomings of the prior art are overcome, and the electrical control becomes simple. At present, most universal wheels are passively rotated when turning when they are in use, that is, they can only achieve the turning process under the action of force, which leads to the need to control them manually, which is not only not practical, but also difficult to accurately control the turning of the universal wheel.

[0005] To solve the above technical problems, the utility model provides the following technical solutions: an electric universal wheel, comprising a fixed seat, a bearing seat is fixedly installed on the bottom of the fixed seat, and the bottom of the bearing seat is connected to a connecting frame, a movable wheel is arranged on the inner side of the connecting frame, and a first thread groove is provided on the side wall of the movable wheel, a positioning bolt is provided on the inner side of the first thread groove, an annular groove is provided on the upper surface of the fixed seat, and a through hole is connected to the bottom of the annular groove, a connecting bolt passes through the inner side of the through hole, a protective shell is distributed above the fixed seat, a sponge pad is provided in the middle of the top end of the fixed seat, and a motor is provided on the inner side of the sponge pad, a second thread groove is provided on the bottom of the protective shell, and a connecting structure is provided on the top end of the protective shell.

[0006] As a preferred technical solution of the utility model, the connection structure includes a connection column and a convex ring. The connection column is fixedly installed in the middle of the top end of the protective shell, and the outer side of the top end of the connection column is sleeved with a convex ring.

[0007] As a preferred technical solution of the utility model, a reset spring is fixedly connected to the inner side wall of the connecting column, and the other end of the reset spring is fixedly connected to a locking block, and an auxiliary slide is sleeved on the outer side of one end of the locking block.

[0008] As a preferred technical solution of the utility model, a through hole is opened on one side of the bottom of the connection frame, and the inner diameter of the through hole is matched with the outer diameter of the positioning bolt.

[0009] As a preferred technical solution of the utility model, the through holes are equidistantly distributed along the center point of the fixing seat, and the through holes and the fixing seat form an integrated structure.

[0010] As a preferred technical solution of the present invention, the locking block is slidably connected to the connecting column via the reset spring, and the locking block is symmetrically distributed along the vertical center line of the connecting column.

[0011] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0012] 1. The combined use of the bearing seat, the connecting frame and the motor, compared with the existing method of manually realizing the steering of the entire universal wheel, this structure no longer requires manual operation, and the steering of the universal wheel can be realized by the operation of the motor, which is more convenient and faster, and has higher practicality. When the motor is working, the bearing seat will rotate accordingly, and then the rotation of the bearing seat can realize the rotation of the connecting frame, which can facilitate the subsequent steering of the universal wheel;

[0013] 2. The combined use of the connecting bolts, the protective shell and the bolt groove can facilitate the subsequent disassembly of the entire universal wheel structure, and facilitate the subsequent replacement of the entire universal wheel structure when it is damaged. It has higher practicality. When the protective shell is engaged with the top of the fixing seat, the connecting bolt will pass through the inner side of the through hole and extend the connecting bolt to the inner side of the second bolt groove, thereby realizing the quick connection between the protective shell and the fixing seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the electric universal wheel of the utility model;

[0015] Figure 2 This is a schematic diagram of the top view of the electric universal wheel fixing seat of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the protective shell of the electric universal wheel of the utility model when viewed from above;

[0017] Figure 4 This is a schematic diagram of the structure of the electric universal wheel moving wheel of the utility model;

[0018] Among them: 1. fixed seat; 2. bearing seat; 3. connecting frame; 4. moving wheel; 5. first thread groove; 6. positioning bolt; 7. annular groove; 8. through hole; 9. connecting bolt; 10. protective shell; 11. sponge pad; 12. motor; 13. second thread groove; 14. connecting column; 15. convex ring; 16. reset spring; 17. locking block; 18. auxiliary slide plate. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0020] Example

[0021] Please refer to Figure 1As shown, the utility model provides an electric universal wheel, including a fixed seat 1, a bearing seat 2 is fixedly installed at the bottom of the fixed seat 1, and a connecting frame 3 is connected to the bottom of the bearing seat 2, a through hole is opened on one side of the bottom of the connecting frame 3, and the inner diameter size of the through hole is matched with the outer diameter size of the positioning bolt 6, a moving wheel 4 is arranged on the inner side of the connecting frame 3, and a first thread groove 5 is opened on the side wall of the moving wheel 4, and a positioning bolt 6 is arranged on the inner side of the first thread groove 5, an annular groove 7 is opened on the upper surface of the fixed seat 1, and a through hole 8 is connected to the bottom of the annular groove 7, and a connecting bolt 9 is penetrated on the inner side of the through hole 8, a protective shell 10 is distributed above the fixed seat 1, a sponge pad 11 is arranged in the middle of the top end of the fixed seat 1, and a motor 12 is arranged on the inner side of the sponge pad 11, a second thread groove 13 is opened at the bottom of the protective shell 10, and a connecting structure is arranged on the top of the protective shell 10;

[0022] When in use, the entire structure is first fixedly connected to the device through the provided connecting column 14, and then the provided connecting bolts 9 are used to realize the quick connection between the protective shell 10 and the fixing seat 1. Then, when in use, the motor 12 can be used to realize the steering of the moving wheel 4, so that it is no longer necessary to perform the steering process manually, which is more practical.

[0023] As a further implementation of this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a moving wheel 4 is arranged on the inner side of the connecting frame 3, and a first thread groove 5 is provided on the side wall of the moving wheel 4, and a groove is provided on the surface of the moving wheel 4 for increasing friction, a positioning bolt 6 is arranged on the inner side of the first thread groove 5, an annular groove 7 is provided on the upper surface of the fixing seat 1, and a through hole 8 is connected to the bottom of the annular groove 7, the through holes 8 are equidistantly distributed along the center point of the fixing seat 1, and the through holes 8 and the fixing seat 1 form an integrated structure, a connecting bolt 9 passes through the inner side of the through hole 8, a protective shell 10 is distributed above the fixing seat 1, a sponge pad 11 is arranged in the middle of the top of the fixing seat 1, and a motor 12 is arranged on the inner side of the sponge pad 11, and the protective shell 10 A second thread groove 13 is provided at the bottom, a connecting structure is provided at the top of the protective shell 10, a connecting column 14 is fixedly installed at the middle of the top of the protective shell 10, and a convex ring 15 is sleeved on the outer side of the top of the connecting column 14, the connecting column 14 and the convex ring 15 form a connecting structure, and the connecting structure is provided at the top of the protective shell 10, a reset spring 16 is fixedly connected to the inner side wall of the connecting column 14, and a locking block 17 is fixedly connected to the other end of the reset spring 16, the locking block 17 is slidably connected to the connecting column 14 through the reset spring 16, and the locking blocks 17 are symmetrically distributed along the vertical center line of the connecting column 14, and an auxiliary slide plate 18 is sleeved on the outer side of one end of the locking block 17;

[0024] When the entire device needs to be installed, the protective shell 10 is engaged with the top of the fixing base 1. Since an annular groove 7 is provided on the periphery of the top of the fixing base 1, when the protective shell 10 is connected to the fixing base 1, the bottom of the protective shell 10 will be engaged with the inner cavity of the annular groove 7, and then the connecting bolt 9 passes through the inner side of the through hole 8 and extends to the inner side of the second thread groove 13. Then the connecting bolt 9 is rotated to achieve a quick connection between the protective shell 10 and the fixing base 1. The sponge pad 11 provided on the top of the fixing base 1 can effectively protect the motor 12, and at the same time, it can perform a certain effect of silencing the noise generated when the motor 12 is working. When the moving wheel 4 is connected to the connecting frame 3, the first thread groove 5 opened on one side of the moving wheel 4 is aligned with the through hole opened on one side of the bottom of the connecting frame 3, and then the positioning bolt 6 passes through the through groove and extends On the inner side of the first thread groove 5, and then rotate the positioning bolt 6, and then combine with the positioning bolts 6 symmetrically arranged on both sides to realize the quick connection between the moving wheel 4 and the connecting frame 3. Since the side walls of the moving wheel 4 are provided with bearing seats 2, the bearing seats 2 arranged on the side walls can play a role in assisting the rotation of the moving wheel 4. When the connecting column 14 arranged on the top of the protective shell 10 is input into the connecting hole reserved at the connection part of the instrument, the convex ring 15 arranged in combination can simply improve the stability of the connection between the two. Then, the reverse force generated by the deformation of the reset spring 16 will push the locking block 17 in the reverse direction, and then the locking block 17 slides outward, so that one end of it is input into the locking hole reserved on the other side, thereby realizing the quick connection between the entire universal wheel structure and the instrument, and the setting of the auxiliary slide plate 18 can improve the stability of the locking block 17 during the lateral movement.

[0025] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An electric universal wheel, comprising a fixing seat (1), characterized in that: A bearing seat (2) is fixedly mounted on the bottom of the fixed seat (1), and a connecting frame (3) is connected to the bottom of the bearing seat (2); a moving wheel (4) is arranged on the inner side of the connecting frame (3), and a first thread groove (5) is provided on the side wall of the moving wheel (4); a positioning bolt (6) is arranged on the inner side of the first thread groove (5); an annular groove (7) is provided on the upper surface of the fixed seat (1), and a through hole (8) is connected to the bottom of the annular groove (7); a connecting bolt (9) penetrates the inner side of the through hole (8); a protective shell (10) is distributed above the fixed seat (1); a sponge pad (11) is provided at the middle of the top end of the fixed seat (1), and a motor (12) is arranged on the inner side of the sponge pad (11); a second thread groove (13) is provided on the bottom of the protective shell (10), and a connecting structure is arranged at the top end of the protective shell (10).

2. The electric universal wheel according to claim 1, characterized in that: The connection structure comprises a connection column (14) and a convex ring (15); the connection column (14) is fixedly mounted at the middle of the top end of the protective shell (10), and the convex ring (15) is sleeved on the outer side of the top end of the connection column (14).

3. The electric universal wheel according to claim 2, characterized in that: The inner side wall of the connecting column (14) is fixedly connected to a return spring (16), and the other end of the return spring (16) is fixedly connected to a locking block (17), and an auxiliary sliding plate (18) is sleeved on the outer side of one end of the locking block (17).

4. The electric universal wheel according to claim 1, characterized in that: A through hole is provided on one side of the bottom of the connection frame (3), and the inner diameter of the through hole is matched to the outer diameter of the positioning bolt (6).

5. The electric universal wheel according to claim 1, characterized in that: The through holes (8) are distributed at equal distances along the center point of the fixing seat (1), and the through holes (8) and the fixing seat (1) form an integrated structure.

6. The electric universal wheel according to claim 3, characterized in that: The locking block (17) is slidably connected to the connecting column (14) via the return spring (16), and the locking block (17) is symmetrically distributed along the vertical center line of the connecting column (14).

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