Inner core and bearing integrated universal wheel

Abstract

The utility model discloses an inner core and bearing integrated universal wheel, and relates to the technical field of trundle manufacturing, the inner core and bearing integrated universal wheel comprises a bearing and an inner core which are integrally formed, and a wheel seat used for mounting a bearing and inner core integrated structure, a wheel shaft is axially arranged on the inner side of the bearing in a penetrating manner, the inner core is arranged to be a rubber surface in the circumferential direction, and the top of the wheel seat is rotationally connected to an external vehicle body; the inner core is integrally formed with the wheel seat, a brake structure is arranged on the side portion of the wheel seat, the wheel shaft sequentially penetrates through the wheel seat, the bearing, the wheel seat and the brake structure in the axial direction and then is connected with a bolt, the brake structure is composed of a pedal and a brake plate, and the wheel shaft serves as a turnover shaft of the pedal. Meanwhile, the overall strength of the bearing and the inner core is improved, and the time for manually assembling the bearing is greatly shortened; the braking vane is arranged to be of a two-part structure of the same whole, so that the stability of vertical movement of the sliding plate and the bevel brake pad can be improved at the position of the U-shaped gap, and the braking effect of the universal wheel is improved.

Description

Technical Field

[0001] This application relates to the field of caster manufacturing technology, and in particular to a universal caster with an integrated inner core and bearing. Background Technology

[0002] With the rapid development of modern industry and logistics, the demand for convenient movement and flexible positioning of various equipment, furniture, and transportation vehicles is increasing. Casters, as key components for enabling convenient movement and fixation of objects, are widely used in many fields. Casters are mainly divided into three types: swivel casters, fixed casters, and swivel casters with brakes. Swivel casters can rotate freely 360 degrees and are suitable for scenarios requiring flexible changes in direction; fixed casters can only move in a straight line and are often used for equipment with specific requirements for the direction of movement; swivel casters with brakes combine free movement with reliable braking, providing effective protection when temporary fixation is required.

[0003] Traditional caster assembly processes have significant drawbacks. Existing casters require the separate procurement of multiple components, such as bearings and caster cores. This complex parts system not only increases supply chain management costs but also makes the assembly process lengthy and complicated. In particular, manually installing bearings onto both sides of the caster core requires significant manpower and time, and the assembly process demands extremely high precision. This assembly method poses a risk of bearing detachment during long-term use, affecting the normal operation of the caster. Therefore, there is an urgent need to optimize the design and assembly solutions through technological innovation. Summary of the Invention

[0004] This device provides a universal wheel with an integrated inner core and bearing, and the specific implementation method is as follows:

[0005] A universal wheel with an integrated inner core and bearing, comprising:

[0006] The bearing and inner core are integrally molded. The bearing has an axle that runs through its inner side axially, and the inner core has a rubber surface along its circumference.

[0007] Wheel mounts are used to install bearings and an integrated inner core structure. The top of the wheel mount is rotatably connected to the external vehicle body, and a brake structure is provided on the side of the wheel mount.

[0008] The wheel axle passes through the wheel seat, bearing, wheel seat and brake structure in sequence and is then connected to bolts. The brake structure consists of a pedal and a brake plate, and the wheel axle serves as the pedal's flipping axis.

[0009] Based on the above technical solution, by stamping the bearing and inner core as a single unit, the number of parts is simplified. The original two-sided bearings are replaced with a single bearing. The stamping process of the bearing and inner core is completed in the bearing factory. The caster manufacturer only needs to apply adhesive to the outside of the inner core and then assemble it with the wheel seat. This not only improves the overall strength of the bearing and inner core, but also greatly reduces the time for manual bearing assembly.

[0010] Preferably, the brake plate is divided into two parts, left and right. The left part includes a folded brake pad located inside the wheel seat, and the right part consists of a sliding plate that is vertically slidably located outside the wheel seat.

[0011] Preferably, a U-shaped gap is provided vertically between the left and right parts of the brake plate, and the U-shaped gap is slidably connected to the open side of the wheel seat.

[0012] Based on the above technical solutions, an integrated dual-structure design is adopted, optimizing the brake plate into two mutually cooperating parts. A U-shaped gap is formed in the middle of the brake plate, which provides dual guidance and limiting support for the vertical movement of the sliding plate and the angled brake pad. The inner wall of the U-shaped gap fits tightly with the open side of the wheel seat to form a track constraint, effectively avoiding lateral deviation during the movement process, and significantly improving the response speed and braking force of the omnidirectional wheel during braking.

[0013] Preferably, the pedal includes a board body, with the top of both ends of the board body being tread surfaces, and the middle part of the board body being roughly circular.

[0014] Preferably, the outer side of the sliding plate is provided with a limiting bottom point and a limiting top point, and the top of the plate body in the middle of the circle abuts against the limiting top point, and the bottom of the plate body in the middle of the circle is provided with a stepped groove, which acts on the limiting bottom point.

[0015] Preferably, a positioning block is provided on the outer side of the wheel seat, and a limiting groove is provided on the sliding plate, with the limiting groove sliding vertically connected to the positioning block.

[0016] Based on the above technical solution, by engaging the stepped groove of the plate with the limiting bottom point, and utilizing the linkage transmission mechanism between the top of the plate's circular center and the limiting apex, the pedal can be flexibly switched between the locked and unlocked positions. The stepped design of the stepped groove can gradually engage with the limiting bottom point. When the pedal is pressed down, the stepped groove slides along the limiting bottom point to the preset locking position, achieving stable positioning of the locked state through geometric engagement. When the pedal is pressed down on the other side, the top of the circular center slides along the arc trajectory of the limiting apex, releasing the locking relationship between the stepped groove and the limiting bottom point using the lever principle, allowing the pedal to smoothly return to the unlocked position.

[0017] Preferably, the inner side of the angled brake pad is configured as a brake surface that acts on the rubber surface, and an elastic guide rod is provided between the back of the angled brake pad and the top of the inner side of the wheel seat.

[0018] Preferably, the elastic guide rod has sliding seats at both ends, and the back of the brake pad and the top of the inner side of the wheel seat are provided with sliding grooves for the sliding seats to be guided in, and a locking pin is provided between the sliding seat and the sliding groove.

[0019] Based on the above technical solution, a slidable elastic guide rod structure is set between the back of the angled brake pad and the top of the inner side of the wheel seat. The elastic guide rod uses a slide rail and a spring, and can be quickly slid in for installation through a preset slot and guide groove. This effectively avoids the complex component assembly process of traditional casters, greatly improves assembly efficiency, and reduces labor costs. In actual use, the elastic buffering mechanism reduces the impact of shaking on the brake structure.

[0020] In summary, this application includes the following beneficial technical effects:

[0021] 1. This utility model simplifies the number of parts by integrally molding the bearing and the inner core, while also improving the overall strength of the bearing and the inner core, and greatly reducing the time required for manual assembly of the bearing.

[0022] 2. By designing the brake plate as a two-part structure of the same whole, the U-shaped gap can improve the stability of the vertical movement of the sliding plate and the angled brake pad, thereby improving the braking effect of the caster wheel.

[0023] 3. This utility model has a simple structure. By setting an elastic guide rod that can be slidably guided between the back of the angled brake pad and the top of the inner side of the wheel seat, it not only improves the stability of vertical braking, but also makes installation convenient. Attached Figure Description

[0024] Figure 1 This is an exploded structural diagram of a universal caster in the prior art;

[0025] Figure 2 This is a schematic diagram of the structure of this utility model;

[0026] Figure 3 This is an exploded structural diagram of the present invention;

[0027] Figure 4 This is a schematic diagram of the right-side structure of this utility model;

[0028] Figure 5 This is a front view structural diagram of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure after the application of this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Bearing, 2. Inner core, 3. Rubber surface, 4. Wheel seat, 5. Axle, 6. Pedal, 7. Brake plate, 8. Bolt, 9. Elastic guide rod, 10. Limit seat, 11. Original bearing, 12. Original inner core, 13. Original rubber surface.

[0032] 401. Positioning block; 601. Plate; 602. Stepped groove; 701. Sliding plate; 702. Limiting bottom point; 703. Limiting top point; 704. Limiting groove; 705. Angular brake pad. Detailed Implementation

[0033] The specific embodiments of this utility model are described below with reference to the accompanying drawings and examples:

[0034] It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0035] Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0036] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0037] This application discloses a universal wheel with an integrated inner core and bearing.

[0038] Comparative Example 1

[0039] Reference Figure 1 This embodiment discloses a universal wheel in the prior art, including an original inner core 12 sleeved on the wheel axle 5, and original bearings 11 are respectively provided between the inner sides of both ends of the original inner core 12 and the wheel axle 5, and a limiting seat 10 is added to the outer side of the original bearings 11, and an original rubber surface 13 is provided circumferentially on the outer side of the original inner core 12.

[0040] Example 1

[0041] Reference Figures 2 to 5This embodiment discloses an integrated universal wheel with an inner core and bearing, including an integrally formed bearing 1 and inner core 2, and a wheel seat 4 for mounting the integrated structure of bearing 1 and inner core 2. An axle 5 is axially provided through the inner side of bearing 1, and the inner core 2 is provided with a rubber surface 3 along its circumference. In this structure, the top of the wheel seat 4 is rotatably connected to the external vehicle body, and a brake structure is provided on the side of the wheel seat 4. The axle 5 passes through the wheel seat 4, bearing 1, wheel seat 4 and brake structure in sequence and is connected to a bolt 8. The brake structure consists of a pedal 6 and a brake plate 7, and the axle 5 serves as the flipping axis of the pedal 6.

[0042] The brake plate 7 is divided into two parts, left and right. The left part includes a folded brake pad 705 located inside the wheel seat 4, and the right part is composed of a sliding plate 701 that is vertically slidably located outside the wheel seat 4. In this structure, a U-shaped gap is vertically provided between the left and right parts of the brake plate 7, and the U-shaped gap is slidably connected to the open side of the wheel seat 4.

[0043] The pedal 6 includes a plate 601, with the top of both ends of the plate 601 serving as tread surfaces. The middle part of the plate 601 is roughly circular. The outer side of the sliding plate 701 is provided with a limiting bottom point 702 and a limiting top point 703. The top of the roughly circular middle part of the plate 601 abuts against the limiting top point 703. The bottom of the roughly circular middle part of the plate 601 is provided with a stepped groove 602, which acts on the limiting bottom point 702. In this structure, the outer side of the wheel seat 4 is provided with a positioning block 401. A limiting groove 704 is opened on the sliding plate 701, and the limiting groove 704 is vertically slidably connected to the positioning block 401.

[0044] The specific implementation process is as follows: When locking is required, press down on one side of the pedal 6, and the first step of the stepped groove 602 acts on the bottom limit point 702, causing the brake plate 7 to fall as a whole; during this time, the sliding plate 701 falls vertically downward along the positioning block 401, and the angled brake pad 705 acts on the rubber surface 3 to achieve the braking effect; when unlocking is required, press down on the other side of the pedal 6, and the second step of the stepped groove 602 abuts against the bottom limit point 702, and the top of the rounded middle part of the plate 601 acts on the limit vertex 703, forcing the brake plate 7 to rise as a whole, and the angled brake pad 705 moves away from the rubber surface 3 to achieve the unlocking effect.

[0045] Example 2

[0046] Reference Figure 6In addition to the above embodiments, this embodiment also discloses an integrated universal wheel with an inner core and bearing. The inner side of the angled brake pad 705 is set as a brake surface acting on the rubber surface 3. An elastic guide rod 9 is provided between the back of the angled brake pad 705 and the top inner side of the wheel seat 4. The elastic guide rod 9 includes a telescopic rod and a spring sleeved on the telescopic rod. Sliding seats are provided at both ends of the elastic guide rod 9. The back of the brake pad 705 and the top inner side of the wheel seat 4 are both provided with a sliding groove for the sliding seat to be guided. A locking pin is provided between the sliding seat and the sliding groove. The locking pin is a conventional sliding positioning component used to lock the installation position after the elastic guide rod 9 is guided in. The elastic guide rod 9 also improves the stability of the vertical movement of the angled brake pad 705. The lateral sliding of the elastic guide rod 9 also makes installation convenient. In this structure, the elastic guide rod 9 can be a model with high elasticity. That is, the pedal 6 is locked when pressed and automatically enters the unlocked position when the pedal 6 is released.

[0047] Many other changes and modifications can be made without departing from the concept and scope of this utility model. It should be understood that this utility model is not limited to the specific embodiments, and the scope of this utility model is defined by the appended claims.

Claims

1. A universal wheel with an integrated inner core and bearing, characterized in that, include: The bearing (1) and inner core (2) are integrally formed. The bearing (1) has an axle (5) axially extending through its inner side, and the inner core (2) has a rubber surface (3) along its circumference. A wheel seat (4) for mounting the bearing (1) and the inner core (2) as an integrated structure, the top of the wheel seat (4) is rotatably connected to the outer vehicle body, and the side of the wheel seat (4) is provided with a brake structure; The axle (5) passes through the wheel seat (4), the bearing (1), the wheel seat (4) and the brake structure in sequence and is connected to a bolt (8). The brake structure consists of a pedal (6) and a brake plate (7), and the axle (5) serves as the rotation axis of the pedal (6).

2. The universal wheel with an integrated inner core and bearing as described in claim 1, characterized in that, The brake plate (7) is divided into two parts, left and right. The left part includes a folded brake pad (705) located inside the wheel seat (4), and the right part is composed of a sliding plate (701) that is vertically slidably located outside the wheel seat (4).

3. A universal wheel with an integrated inner core and bearing as described in claim 2, characterized in that, The brake plate (7) has a vertical U-shaped gap between its left and right parts, and the U-shaped gap is slidably connected to the open side of the wheel seat (4).

4. A universal wheel with an integrated inner core and bearing as described in claim 3, characterized in that, The pedal (6) includes a plate (601), the top of both ends of the plate (601) are set as tread surfaces, and the middle part of the plate (601) is roughly circular.

5. A universal wheel with an integrated inner core and bearing as described in claim 4, characterized in that, The sliding plate (701) is provided with a limiting bottom point (702) and a limiting top point (703) on its outer side, and the top of the plate body (601) in the middle of the circle abuts against the limiting top point (703). The bottom of the plate body (601) in the middle of the circle is provided with a stepped groove (602), and the stepped groove (602) acts on the limiting bottom point (702).

6. A universal wheel with an integrated inner core and bearing as described in claim 5, characterized in that, The outer side of the wheel seat (4) is provided with a positioning block (401), and a limiting groove (704) is provided on the sliding plate (701), and the limiting groove (704) is vertically slidably connected to the positioning block (401).

7. A universal wheel with an integrated inner core and bearing as described in claim 2, characterized in that, The inner side of the angled brake pad (705) is configured as a brake surface that acts on the rubber surface (3), and an elastic guide rod (9) is provided between the back of the angled brake pad (705) and the top of the inner side of the wheel seat (4).

8. A universal wheel with an integrated inner core and bearing as described in claim 7, characterized in that, The elastic guide rod (9) has sliding seats at both ends. The back of the brake pad (705) and the top of the inner side of the wheel seat (4) are provided with sliding grooves for the sliding seats to be guided. A locking pin is provided between the sliding seat and the sliding groove.

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