New material bearing sleeve cover trundle

Abstract

The utility model relates to the technical field of casters, and discloses a new material bearing sleeve cover caster which comprises a base, a support is arranged below the base, a wave disc is arranged at the bottom of the support, and a first bearing ball assembly and a second bearing ball assembly are arranged on the upper side and the lower side of the support respectively. A roller is rotatably mounted below the support, a rivet is arranged on the base, a gap is reserved between the bottom of the rivet and the base through the concave surface, the contact area of the rivet and the base is reduced, the rivet is mounted on the base, one end of the wave disc is mounted together with the rivet, and due to the fact that the concave surface is arranged outside the rivet, the contact area between the rivet and the base is reduced. In this way, even if the perpendicularity of the fitting face is poor in thread machining, the rivet can have a tiny self-adjusting space in the screwing process in the installation process of the wave disc and the rivet, and therefore the influence of perpendicularity deviation is reduced, the requirement for the perpendicularity of rivet threads is lowered, and large-batch production is easy to achieve.

Description

Technical Field

[0001] This utility model relates to the field of caster technology, and in particular to a new material bearing sleeve cover caster. Background Technology

[0002] Casters are small wheels installed on the bottom of equipment, machines, or furniture, primarily used to facilitate the movement of objects and improve mobility, flexibility, and load-bearing capacity. Casters are widely used in industrial, commercial, and domestic environments, such as for factory equipment, trolleys, medical equipment, and furniture. A caster typically consists of a wheel, a bracket, and connecting parts. Depending on the specific usage requirements, casters of different materials, sizes, and load-bearing capacities can be selected. Their core function is to enable easy movement of equipment or objects, reducing the burden of manual handling, while adapting to various movement scenarios.

[0003] In the existing technology, rivets are required in the process of installing caster bearings, and threaded holes need to be made in the rivets to install the pulsator in the corresponding position. However, it is difficult to guarantee the perpendicularity of the mating surface when machining the rivet threads, which is not conducive to the mass production of rivets. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art by proposing a new material bearing sleeve cover caster.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A new type of bearing sleeve cover caster includes a base, a bracket is provided below the base, a vortex is provided at the bottom of the bracket, a first bearing ball assembly and a second bearing ball assembly are respectively provided on the upper and lower sides of the bracket, a roller is rotatably mounted below the bracket, a rivet is provided on the base, the top of the vortex movably passes through the bracket and the base and is threadedly connected to the rivet, and the outer periphery of the rivet is provided with a concave surface, which creates a gap between the bottom of the rivet and the base, thereby reducing the contact area between the rivet and the base.

[0007] Preferably, the first bearing ball assembly includes a first upper cover plate, a first lower cover plate, and a plurality of first balls. The bottom of the base is provided with a first track, the first upper cover plate is disposed in the first track, the first lower cover plate is disposed above the bracket, and the plurality of first balls are rotatably disposed between the first upper cover plate and the first lower cover plate.

[0008] Preferably, the second bearing ball includes a bearing sleeve and a plurality of second balls, the bearing sleeve being disposed on the outer periphery of the pulsator, and the plurality of second balls being disposed between the bearing sleeve and the pulsator.

[0009] Preferably, the first upper cover plate, the first lower cover plate, and the bearing sleeve cover are integrally formed from stainless steel.

[0010] Preferably, the bottom of the rivet has a first threaded hole, and the top of the wave plate is threadedly connected to the first threaded hole.

[0011] Preferably, the top of the base is provided with a insertion groove for inserting a rivet into the groove to limit the rivet's position, and the insertion groove is adapted to the rivet.

[0012] Preferably, the insertion slot is provided with a convex surface, and the convex surface corresponds to the concave surface.

[0013] Preferably, the roller includes a roller body, a bolt, and a screw. The bolt movably passes through the support and the bearing on the roller body. A second threaded hole is provided on one side of the screw, and the thread on one side of the bolt is screwed into the second threaded hole.

[0014] Preferably, a washer is provided on both sides of the roller body and between the support, and the washer is located on the outer periphery of the bolt.

[0015] Preferably, the base is provided with a plurality of waist holes for mounting the base onto the corresponding equipment.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention, through the design of a base, allows the first bearing ball assembly to be installed between the bracket and the base, and the second bearing ball assembly to be installed between the bracket and the pulsator. By installing a rivet on the base and then attaching one end of the pulsator to the rivet, and because the rivet has a concave surface, even if the perpendicularity of the thread processing to the mating surface is poor, the rivet can have a slight self-adjustment space during the tightening process of the rivet and the pulsator, thereby reducing the impact of perpendicularity deviation. This reduces the perpendicularity requirement of the rivet thread and makes it easier to achieve mass production. Attached Figure Description

[0018] Figure 1 This is an overall schematic diagram of a new material bearing sleeve cover caster proposed in this utility model;

[0019] Figure 2 This utility model proposes a novel material for the insertion groove of a bearing sleeve cover caster.

[0020] Figure 3 This is a schematic diagram of the first and second balls of a new material bearing sleeve cover caster proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the roller body of a new material bearing sleeve cover caster proposed in this utility model;

[0022] Figure 5 This is a cross-sectional view of a new material bearing sleeve cover caster proposed in this utility model.

[0023] In the diagram: 1. Base; 2. Bracket; 3. Wave plate; 4. Rivet; 5. Concave surface; 6. First upper cover plate; 7. First lower cover plate; 8. First ball bearing; 9. First track; 10. Bearing sleeve cover; 11. Second ball bearing; 12. First threaded hole; 13. Insertion groove; 14. Convex surface; 15. Roller body; 16. Bolt; 17. Screw; 18. Second threaded hole; 19. Washer; 20. Waist hole; 21. Second track. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Reference Figures 1 to 5 A new type of bearing sleeve cover caster includes a base 1, a bracket 2 is provided below the base 1, a pulsator 3 is provided at the bottom of the bracket 2, a first bearing ball assembly and a second bearing ball assembly are respectively provided on the upper and lower sides of the bracket 2, a roller is rotatably installed below the bracket 2, a rivet 4 is provided on the base 1, the top of the pulsator 3 movably passes through the bracket 2 and the base 1 and is threadedly connected to the rivet 4, and a concave surface 5 is provided on the outer periphery of the rivet 4, which creates a gap between the bottom of the rivet 4 and the base 1, thereby reducing the contact area between the rivet 4 and the base 1.

[0026] In use, the first bearing ball assembly can be installed between the bracket 2 and the base 1, and the second bearing ball assembly can be installed between the bracket 2 and the pulsator 3. The rivet 4 is installed on the base 1, and then one end of the pulsator 3 is installed together with the rivet 4. Because the rivet 4 has a concave surface 5, even if the perpendicularity of the thread processing to the mating surface is poor, the rivet 4 can have a small self-adjustment space during the tightening process of the pulsator 3 and the rivet 4, thereby reducing the impact of perpendicularity deviation. In this way, the perpendicularity requirement of the rivet 4 thread is reduced, making it easy to achieve mass production.

[0027] Furthermore, the first bearing ball assembly includes a first upper cover plate 6, a first lower cover plate 7, and a plurality of first balls 8. The bottom of the base 1 is provided with a first track 9. The first upper cover plate 6 is disposed within the first track 9, and the first lower cover plate 7 is disposed within a second track 21 on the bracket 2. The plurality of first balls 8 are rotatably disposed between the first upper cover plate 6 and the first lower cover plate 7. The second bearing ball assembly includes a bearing sleeve cover 10 and a plurality of second balls 11. The bearing sleeve cover 10 is disposed on the outer periphery of the pulsator 3, and the plurality of second balls 11 are disposed between the bearing sleeve cover 10 and the pulsator 3. By placing the first balls 8 between the first upper cover plate 6 and the first lower cover plate 7, and then installing the first upper cover plate 6 and the first lower cover plate 7 between the bracket 2 and the base 1, the pulsator 3 can support the second balls 11 and bear the weight of the rollers. In this way, the friction between the first balls 8 and the second balls 11 replaces sliding friction, significantly reducing the coefficient of friction, reducing the energy loss of the bracket 2 during rotation, and making the bracket 2 operate more smoothly.

[0028] The first upper cover plate 6 is engaged in the first track 9, and the first lower cover plate 7 is engaged in the second track 21 on the bracket 2.

[0029] Furthermore, the first upper cover plate 6, the first lower cover plate 7, and the bearing sleeve cover 10 are integrally formed from stainless steel. Because the first upper cover plate 6, the first lower cover plate 7, and the bearing sleeve cover 10 are integrally formed from stainless steel, the surfaces of the first upper cover plate 6, the first lower cover plate 7, and the bearing sleeve cover 10 are smooth and have high hardness after forming, which improves the flatness and surface smoothness of the first upper cover plate 6, the first lower cover plate 7, and the bearing sleeve cover 10.

[0030] Furthermore, the bottom of the rivet 4 is provided with a first threaded hole 12, and the top of the wave plate 3 is threadedly connected to the first threaded hole 12. Through the first threaded hole 12, thread adhesive can be applied to the top of the wave plate, and then it can be threadedly connected to the first threaded hole 12 to install the wave plate 3 on the base 1.

[0031] Furthermore, the top of the base 1 is provided with a insertion groove 13 for inserting the rivet 4 into the insertion groove 13 to limit the rivet 4. The insertion groove 13 is adapted to the rivet 4. The rivet 4 can be inserted into the insertion groove 13 to install it on the base 1.

[0032] Furthermore, a convex surface 14 is provided in the insertion groove 13, and the convex surface 14 corresponds to the position of the concave surface 5. The convex surface 14 can prevent the gap between the concave surface 5 and the base 1 from being too large, which would affect the insertion effect of the rivet 4.

[0033] Furthermore, the roller includes a roller body 15, a bolt 16, and a screw 17. The bolt 16 movably passes through the support 2 and the bearing on the roller body 15. The screw 17 has a second threaded hole 18 on one side, and the bolt 16 is threaded into the second threaded hole 18 on one side. By setting the bolt 16 and the screw 17, the bolt 16 can pass through one side of the support 2 and the bearing on the roller body 15 to the other side of the support 2. Then, by locking the bolt 16 with the screw 17, the roller body 15 can be rotatably installed in the support 2.

[0034] Furthermore, gaskets 19 are provided on both sides of the roller body 15 and between the support 2, and the gaskets 19 are located on the outer periphery of the bolt 16. The gaskets 19 can fill the small gaps between the bearings on both sides of the roller body and the support 2, ensuring the sealing of the connection and preventing the leakage of liquids, gases or other substances.

[0035] Furthermore, the base 1 is provided with a plurality of waist holes 20 for mounting the base 1 onto the corresponding equipment. Through the plurality of waist holes 20, the bolts 16 can pass through the corresponding waist holes 20 to mount the base 1 and the rollers onto the corresponding equipment.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A new type of material bearing sleeve cover caster, comprising a base (1), a bracket (2) disposed below the base (1), a wave plate (3) disposed at the bottom of the bracket (2), a first bearing ball assembly and a second bearing ball assembly respectively disposed on the upper and lower sides of the bracket (2), and a roller rotatably mounted below the bracket (2), characterized in that: The base (1) is provided with a rivet (4). The top of the wave plate (3) is movably connected to the bracket (2) and the base (1) and threadedly connected to the rivet (4). The outer periphery of the rivet (4) is provided with a concave surface (5). The concave surface (5) creates a gap between the bottom of the rivet (4) and the base (1), reducing the contact area between the rivet (4) and the base (1).

2. The new material bearing sleeve cover caster according to claim 1, characterized in that: The first bearing ball assembly includes a first upper cover plate (6), a first lower cover plate (7) and a plurality of first balls (8). The bottom of the base (1) is provided with a first track (9). The first upper cover plate (6) is disposed in the first track (9). The first lower cover plate (7) is disposed above the bracket (2). The plurality of first balls (8) are rotatably disposed between the first upper cover plate (6) and the first lower cover plate (7).

3. The new material bearing sleeve cover caster according to claim 2, characterized in that: The second bearing ball includes a bearing sleeve (10) and a plurality of second balls (11). The bearing sleeve (10) is disposed on the outer periphery of the wave plate (3), and the plurality of second balls (11) are disposed between the bearing sleeve (10) and the wave plate (3).

4. The new material bearing sleeve cover caster according to claim 3, characterized in that: The first upper cover plate (6), the first lower cover plate (7) and the bearing sleeve cover (10) are integrally formed of stainless steel.

5. The new material bearing sleeve cover caster according to claim 4, characterized in that: The bottom of the rivet (4) is provided with a first threaded hole (12), and the top of the wave plate (3) is threadedly connected to the first threaded hole (12).

6. The new material bearing sleeve cover caster according to claim 5, characterized in that: The top of the base (1) is provided with a insertion groove (13) for inserting a rivet (4) into the insertion groove (13) to limit the rivet (4). The insertion groove (13) is adapted to the rivet (4).

7. The new material bearing sleeve cover caster according to claim 6, characterized in that: The insertion slot (13) is provided with a convex surface (14), and the convex surface (14) is positioned opposite to the concave surface (5).

8. The new material bearing sleeve cover caster according to claim 7, characterized in that: The roller includes a roller body (15), a bolt (16) and a screw (17). The bolt (16) passes through the bearing on the bracket (2) and the roller body (15). A second threaded hole (18) is provided on one side of the screw (17). The thread on one side of the bolt (16) is screwed into the second threaded hole (18) for rotating the roller body (15) on the bracket (2).

9. The new material bearing sleeve cover caster according to claim 8, characterized in that: Gaskets (19) are provided on both sides of the roller body (15) and between the bracket (2), and the gaskets (19) are located on the outer periphery of the bolt (16).

10. The new material bearing sleeve cover caster according to claim 9, characterized in that: The base (1) is provided with several waist holes (20) for mounting the base (1) onto the corresponding equipment.

Images