A bearing structure, caster assembly and dolly

Abstract

The utility model discloses a bearing structure and trundle assembly. Bearing structure includes bearing, including bearing body cover shell, including first connecting cover and second connecting cover, first connecting cover install bearing body first side, second connecting cover install bearing body second side, bearing body's first side with bearing body's second side opposite setting. The utility model provides a kind of bearing structure, by setting cover shell, the connection strength between bearing and trundle assembly can be improved, reduce the risk that bearing is separated from trundle assembly, simple and compact structure.

Description

Technical Field

[0001] This utility model relates to the field of freight flatbed truck technology, and in particular to a bearing structure, caster assembly and flatbed truck. Background Technology

[0002] Flatbed trucks are generally used for short-distance cargo transport and are simple and convenient. However, during use, the ball bearings in flatbed trucks can easily detach from the caster assembly due to insufficient connection strength between the bearing and the caster components, affecting the lifespan of the caster assembly.

[0003] Therefore, there is an urgent need for a bearing structure to solve the above problems. Utility Model Content

[0004] This utility model aims to at least partially solve one of the problems existing in the prior art. To this end, this utility model proposes a bearing structure that, by setting a cover, can improve the connection strength between the bearing and the caster assembly, reduce the risk of the bearing coming off the caster assembly, and has a simple and compact structure.

[0005] The above objectives are achieved through the following technical solutions:

[0006] A bearing structure, comprising:

[0007] Bearings, including the bearing body;

[0008] The cover includes a first connecting cover and a second connecting cover. The first connecting cover is installed on a first side of the bearing body, and the second connecting cover is installed on a second side of the bearing body. The first side of the bearing body and the second side of the bearing body are arranged opposite to each other.

[0009] Optionally, the bearing further includes a plurality of balls, a first shielding cover and a second shielding cover. A ball groove is formed in the bearing body. The first shielding cover is installed on a first side of the bearing body, and the second shielding cover is installed on a second side of the bearing body. The plurality of balls are disposed in the ball groove and located between the first shielding cover and the second shielding cover. The first connecting cover is installed on the bearing body and located on the side of the first shielding cover opposite to the balls. The second shielding cover is installed on the bearing body and located on the side of the second shielding cover opposite to the balls.

[0010] Optionally, the cover further includes a connecting cover, a first end of which is connected to the first connecting cover, and a second end of which is connected to the second connecting cover, the connecting cover being disposed on the periphery of the bearing body.

[0011] Optionally, the cover is integrally formed.

[0012] Optionally, the cover is injection molded onto the bearing body.

[0013] Optionally, the connecting cover includes a first connecting segment and a second connecting segment, wherein the first connecting segment is connected to the first connecting cover to form a first connecting cover body, and the second connecting segment is connected to the second connecting cover to form a second connecting cover body.

[0014] Optionally, the first connecting cover is integrally formed; and / or the second connecting cover is integrally formed.

[0015] Optionally, both the first connecting cover and the second connecting cover are injection molded onto the bearing body.

[0016] Another aspect of this utility model provides a caster assembly, including the aforementioned bearing structure, and further comprising:

[0017] The support structure includes a support body, which is injection molded onto the outside of the bearing structure; and / or

[0018] A caster structure, including a caster body, which is injection molded onto the outside of the bearing structure.

[0019] In another aspect, this utility model provides a flatbed cart, including the caster assembly described above.

[0020] Compared with the prior art, the present invention has at least the following beneficial effects:

[0021] The bearing structure provided by this utility model includes a bearing and a cover. The bearing includes a bearing body. The cover includes a first connecting cover and a second connecting cover. The first connecting cover is installed on a first side of the bearing body, and the second connecting cover is installed on a second side of the bearing body, with the first side and the second side of the bearing body opposite to each other. By using the first and second connecting covers, the axial length of the outer part of the bearing structure is increased, thereby increasing the connection area between the bearing structure and the caster body or bracket body, and thus improving the connection strength between the bearing structure and the caster body or bracket body. This solves the problem of the bearing structure detaching from the caster assembly in the prior art. The structure is simple and compact, requiring only the installation of the first and second connecting covers on existing bearings without significant modifications to the existing bearings. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the bearing structure provided in a specific embodiment of this utility model;

[0023] Figure 2 yes Figure 1 Exploded view;

[0024] Figure 3 yes Figure 1 Side view;

[0025] Figure 4 yes Figure 3 Sectional view at point BB;

[0026] Figure 5 This is a three-dimensional structural diagram of the caster assembly provided in a specific embodiment of the present utility model;

[0027] Figure 6 yes Figure 5 Side view;

[0028] Figure 7 yes Figure 6 Sectional view at point DD;

[0029] Figure 8 Yes, yes Figure 6 Sectional view at CC;

[0030] Figure 9 This is a three-dimensional structural diagram of the bearing structure provided in the second specific embodiment of this utility model;

[0031] Figure 10 yes Figure 9 Exploded view;

[0032] Figure 11 yes Figure 9 Side view;

[0033] Figure 12 yes Figure 11 Sectional view at point AA.

[0034] In the picture:

[0035] 1. Cover shell; 11. Connecting cover; 111. First connecting section; 112. Second connecting section; 12. First connecting cover; 13. Second connecting cover;

[0036] 2. Bearing; 21. Bearing body; 22. Ball; 23. First shielding cover; 24. Second shielding cover; 25. Ball groove; 20. Shaft hole;

[0037] 3. Support structure; 31. Support body; 32. Bracket; 33. First rotating shaft;

[0038] 4. Caster wheel structure; 41. Inner tube; 42. Outer tire;

[0039] 5. Second rotating shaft;

[0040] 100. First connecting cover; 200. Second connecting cover. Detailed Implementation

[0041] The following embodiments illustrate the present invention, but the present invention is not limited to these embodiments. Modifications to the specific implementation of the present invention or equivalent substitutions for some technical features, without departing from the spirit of the present invention, should all be covered within the scope of the technical solution claimed by the present invention.

[0042] Example 1

[0043] Please refer to Figures 1-8 This utility model provides a caster assembly, including a bearing structure, a bracket structure 3, and a caster structure 4. The bracket structure 3 includes a bracket body 31 and / or the caster structure 4, the bracket body 31 being injection molded onto the outside of the bearing structure. The caster structure 4 includes a caster body, the caster body being injection molded onto the outside of the bearing structure. The bearing structure includes a bearing 2 and a cover 1. The bearing 2 includes a bearing body 21. The cover 1 includes a first connecting cover 12 and a second connecting cover 13, the first connecting cover 12 being installed on a first side of the bearing body 21, and the second connecting cover 13 being installed on a second side of the bearing body 21, the first side and the second side of the bearing body 21 being opposite to each other. The first connecting cover 12 and the second connecting cover 13 increase the axial length of the outer side of the bearing structure, thereby increasing the connection area between the bearing structure and the caster body or bracket body 31, and thus improving the connection strength between the bearing structure and the caster body or bracket body 31. This solves the problem of the bearing structure coming off the caster assembly in the prior art. The structure is simple and compact, and only the first connecting cover and the second connecting cover need to be set on the existing bearing. No major modifications to the existing bearing are required.

[0044] Optionally, the bearing also includes multiple balls 22, a first retaining cover 23, and a second retaining cover 24. A ball groove 25 is formed in the bearing body 21. The first retaining cover 23 is installed on the first side of the bearing body 21, and the second retaining cover 24 is installed on the second side of the bearing body 21. The multiple balls 22 are disposed in the ball groove 25 and located between the first retaining cover 23 and the second retaining cover 24. The cover 1 includes a first connecting cover 12 and a second connecting cover 13. The first connecting cover 12 is installed on the bearing body 21 and located on the side of the first retaining cover 23 opposite to the balls 22. The second retaining cover 24 is installed on the bearing body 21 and located on the side of the second retaining cover 24 opposite to the balls 22. Thus, the cover 1 also allows the first retaining cover 23 and the second retaining cover 24 to be confined within the bearing body 21, preventing them from detaching from the bearing body 21, achieving a good limiting effect, and resulting in a simple and compact structure.

[0045] Optionally, the cover 1 further includes a connecting cover 11, the first end of which is connected to the first connecting cover 12, and the second end of which is connected to the second connecting cover 13. The connecting cover 11 is disposed on the periphery of the bearing body 21. By providing the connecting cover 11, the connection strength between the cover 1 and the bearing body 21 is improved.

[0046] Optionally, the cover 1 is integrally molded, which can further improve the strength of the cover 1 and facilitate the production of the cover 1.

[0047] Optionally, the cover 1 is injection molded onto the bearing body 21 to facilitate the stable mounting of the cover 1 onto the bearing body 21.

[0048] Optionally, the support structure 3 also includes a bracket 32 ​​and a first rotating shaft 33. The bracket 32 ​​is installed on the upper side of the support body 31, and the first rotating shaft 33 is installed in the shaft hole 20 of the bearing structure located in the support structure 3.

[0049] Optionally, the caster structure 4 also includes a second pivot 5, which is installed in the shaft hole 20 of the bearing structure located in the caster structure 4.

[0050] Optionally, the lower end of the support body 31 is connected to the second rotating shaft 5, and the second rotating shaft 5 can rotate relative to the lower end of the support body 31.

[0051] Optionally, the caster body includes an inner tube 41 and an outer tube 42 disposed outside the inner tube 41, the inner tube 41 being installed on the outside of the bearing structure by injection molding.

[0052] Another aspect of this utility model provides a flatbed cart, including the caster assembly described above.

[0053] Example 2

[0054] Please refer to Figures 9-12 The difference between Embodiment 2 and Embodiment 1 is that the connecting cover 11 includes a first connecting segment 111 and a second connecting segment 112. The first connecting segment 111 is connected to the first connecting cover 12 to form a first connecting cover body 100, and the second connecting segment 112 is connected to the second connecting cover 13 to form a second connecting cover body 200.

[0055] Optionally, the first connecting cover 100 is integrally formed.

[0056] Optionally, the second connecting cover 200 is integrally formed.

[0057] Optionally, both the first connecting cover 100 and the second connecting cover 200 are injection molded onto the bearing body 21.

[0058] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A bearing structure, characterized in that, include: The bearing (2) includes the bearing body (21); The cover (1) includes a first connecting cover (12) and a second connecting cover (13). The first connecting cover (12) is installed on the first side of the bearing body (21), and the second connecting cover (13) is installed on the second side of the bearing body (21). The first side of the bearing body (21) and the second side of the bearing body (21) are arranged opposite to each other.

2. The bearing structure according to claim 1, characterized in that, The bearing (2) further includes a plurality of balls (22), a first cover (23) and a second cover (24). A ball groove (25) is provided in the bearing body (21). The first cover (23) is installed on the first side of the bearing body (21), and the second cover (24) is installed on the second side of the bearing body (21). The plurality of balls (22) are disposed in the ball groove (25) and located between the first cover (23) and the second cover (24). The first connecting cover (12) is installed on the bearing body (21) and located on the side of the first cover (23) opposite to the balls (22). The second connecting cover (13) is installed on the bearing body (21) and located on the side of the second cover (24) opposite to the balls (22).

3. The bearing structure according to claim 1 or 2, characterized in that, The cover (1) also includes a connecting cover (11), the first end of which is connected to the first connecting cover (12), and the second end of which is connected to the second connecting cover (13). The connecting cover (11) is disposed on the periphery of the bearing body (21).

4. The bearing structure according to claim 3, characterized in that, The cover (1) is integrally formed.

5. The bearing structure according to claim 4, characterized in that, The cover (1) is installed on the bearing body (21) by injection molding.

6. The bearing structure according to claim 3, characterized in that, The connecting cover (11) includes a first connecting segment (111) and a second connecting segment (112). The first connecting segment (111) is connected to the first connecting cover (12) to form a first connecting cover body (100), and the second connecting segment (112) is connected to the second connecting cover (13) to form a second connecting cover body (200).

7. The bearing structure according to claim 6, characterized in that, The first connecting cover (100) is integrally formed; and / or the second connecting cover (200) is integrally formed.

8. The bearing structure according to claim 7, characterized in that, Both the first connecting cover (100) and the second connecting cover (200) are injection molded onto the bearing body (21).

9. A caster assembly, characterized in that, Including the bearing structure according to any one of claims 1-8, it further includes: The support structure (3) includes a support body (31), which is installed on the outside of the bearing structure by injection molding; and / or The caster structure (4) includes a caster body, which is installed on the outside of the bearing structure by injection molding.

10. A flatbed cart, characterized in that, Includes the caster assembly as described in claim 9.

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