Roller assembly suitable for draw-bar box

Abstract

The utility model relates to the technical field of luggage, in particular to a roller component suitable for a draw-bar box, which comprises a roller support, rollers arranged on two sides of the roller support and a box body bracket arranged on the roller support, a shock absorption cavity arranged along the vertical direction is arranged in the roller support, and a shock absorption block capable of sliding along the inner wall of the shock absorption cavity is arranged in the shock absorption cavity. The damping block is provided with a connecting hole connected with the idler wheel, the cavity wall of the damping cavity is provided with a kidney-shaped groove matched with the connecting hole, a damping spring is further arranged in the damping cavity, one end of the damping spring is connected with the top wall of the damping cavity, the other end of the damping spring is connected with the damping block in a sleeved mode, and an opening is formed in the bottom of the damping cavity. The assembly efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of luggage technology, specifically to a roller assembly suitable for trolley cases. Background Technology

[0002] When using a rolling suitcase, the contents may be subjected to varying degrees of bumps due to uneven road surfaces, potentially causing damage. Therefore, shock-absorbing wheels are designed to reduce the impact of vibrations on the rolling suitcase.

[0003] Utility model patent application CN202221114593.0 discloses a shock-absorbing roller assembly for suitcases, including a fixed bracket, a shock-absorbing bracket, and a suitcase support. Rollers are mounted on the shock-absorbing bracket, and a shock-absorbing spring is disposed between the shock-absorbing bracket and the fixed bracket. A first friction rod is mounted on the shock-absorbing bracket, and a second friction rod corresponding to the first friction rod is mounted on the fixed bracket. Friction surfaces are provided on the first and second friction rods, and the two friction surfaces abut against each other. The shock-absorbing spring is sleeved on the first and second friction rods. A support surface is provided on one side of each friction surface, and the two support surfaces respectively... Corresponding to the ends of the first friction rod and the second friction rod, the shock-absorbing bracket is provided with a sliding groove, a fixed block is slidably connected in the sliding groove, a telescopic spring is provided between the fixed block and the sliding groove, a fixed toothed ring is provided on the side of the roller near the shock-absorbing bracket, and fixed teeth corresponding to the fixed toothed ring are provided on both sides of the fixed block, a brake block is hinged to the end of the shock-absorbing bracket, the end of the brake block abuts against the fixed block, a fan-shaped baffle is provided on the shock-absorbing bracket, and the central angle of the fan-shaped baffle is greater than 180°, the fixed toothed ring is located in the fan-shaped baffle, and an arc-shaped pedal is provided on the brake block, the arc-shaped pedal is provided with anti-slip texture.

[0004] The shock-absorbing springs between the fixed bracket and the shock-absorbing bracket dampen the luggage during dragging. During the damping process, the first and second friction rods slide against each other through friction surfaces, providing frictional damping for the rotation of the shock-absorbing bracket. The heavier the luggage, the greater the rotation amplitude of the shock-absorbing bracket, the larger the contact area between the two friction surfaces, and the greater the frictional damping. This ensures that the shock-absorbing bracket can provide greater support while maintaining the damping effect. When the weight of the luggage is too large, the first and second friction rods will come into contact with their corresponding support surfaces, thus preventing the shock-absorbing springs from being over-compressed and reducing their service life.

[0005] However, in order to achieve the above-mentioned shock absorption function, the fixed bracket and the shock absorption bracket need to be set separately. This increases the number of parts processing steps and roller assembly steps, reducing production efficiency. Furthermore, since the fixed bracket and the shock absorption bracket are hinged, the processing accuracy of the fixed bracket and the shock absorption bracket must be ensured to match the two, which increases the production difficulty. Summary of the Invention

[0006] The technical problem to be solved by this utility model is to provide a roller assembly suitable for trolley cases, which has shock absorption and braking functions, reduces assembly steps, and improves assembly efficiency, in order to address the shortcomings of the prior art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a roller assembly suitable for a trolley case, comprising a roller bracket, rollers disposed on both sides of the roller bracket, and a case bracket disposed on the roller bracket. The roller bracket has a shock-absorbing cavity disposed vertically. The shock-absorbing cavity has a shock-absorbing block that can slide along the inner wall of the shock-absorbing cavity. The shock-absorbing block has a connection hole for connecting with the roller. The cavity wall of the shock-absorbing cavity has an oblong groove adapted to the connection hole. The shock-absorbing cavity also has a shock-absorbing spring. One end of the shock-absorbing spring is connected to the top wall of the shock-absorbing cavity, and the other end is sleeved with the shock-absorbing block. The bottom of the shock-absorbing cavity has an opening.

[0008] The present invention, possessing the above-mentioned features, simplifies the number of components in the roller assembly, integrates the shock-absorbing mechanism inside the roller bracket, reduces assembly steps, and improves assembly efficiency; utilizes the shock-absorbing spring and sliding shock-absorbing block within the shock-absorbing cavity to absorb and disperse the vibration and impact experienced during the movement of the suitcase, providing a good shock absorption effect, reducing roller damage, and extending roller service life; the waist-shaped groove limits the sliding range of the shock-absorbing block, preventing roller damage caused by excessive sliding of the shock-absorbing block.

[0009] A further feature of this invention is that the inner wall of the shock-absorbing cavity is provided with a cross-shaped protrusion, one end of the shock-absorbing spring is sleeved on the outside of the cross-shaped protrusion, and the end of the shock-absorbing block is provided with a cylindrical block that is sleeved on the shock-absorbing spring.

[0010] The present invention, which has the above-mentioned features, provides stable support points for the shock-absorbing spring by both the cross-shaped protrusion inside the shock-absorbing cavity and the cylindrical block on the shock-absorbing block. This helps the shock-absorbing spring avoid displacement or twisting when it is compressed or stretched, thus ensuring the stability of the shock absorption effect.

[0011] A further feature of this invention is that a brake frame is provided on the roller bracket, a brake function component and a toggle block are installed inside the brake frame, a brake spring is provided between the first end face of the brake function component away from the toggle block and the inner wall of the brake frame, teeth are provided on both sides of the first end face extending outside the brake frame, a fixed toothed ring that meshes with the teeth is provided on the side of the roller near the roller bracket, and the toggle block is hinged to the brake frame, with one end extending into the brake frame and linked with the brake function component, and the other end extending outside the brake frame.

[0012] The present invention, possessing the above-mentioned features, effectively prevents the suitcase from sliding on inclines, declines, and in moving subway or bus carriages by setting a braking structure; the brake frame is directly opened on the roller bracket, integrating the braking mechanism into the roller bracket, resulting in a compact structure; the braking function component maintains a certain preload with the inner wall of the brake frame through the brake spring, so that when braking is needed, the braking function component can quickly respond and apply braking force through the action of the actuating block; the meshing design of the teeth and the fixed toothed ring ensures the effective transmission of braking force, allowing the roller to stop rotating quickly.

[0013] A further feature of this invention is that the brake function component has a hemispherical groove on the second end face of the actuating block, and the actuating block has a hemispherical protrusion at its end that matches the hemispherical groove.

[0014] The present invention, which has the above-mentioned features, has a hemispherical groove and a hemispherical protrusion design that ensures that the actuating block can be accurately aligned with and push the brake function during operation. Compared with the contact method of a flat surface or a sharp edge, the combination of the hemispherical groove and the protrusion can reduce the direct contact area between the components, thereby reducing friction and wear, and improving stability and impact resistance.

[0015] A further feature of this invention is that the end of the actuating block located outside the brake frame is a V-shaped block, and an anti-slip strip is provided on the end face of the V-shaped block.

[0016] The present invention, which has the above features, has the following characteristics: the V-shaped block design makes it easier for users to find a stable grip point when operating the lever; the anti-slip strip further enhances the friction between the fingers and the lever, preventing accidental loosening due to slipping or improper operation.

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0019] Figure 2 This is a schematic diagram of the structure after removing the rollers in an embodiment of this utility model.

[0020] Figure 3 for Figure 2 A sectional view.

[0021] Figure 4 Explosion of the brake function component and the actuating block in an embodiment of this utility model Figure 1 .

[0022] Figure 5 Explosion of the brake function component and the actuating block in an embodiment of this utility model Figure 2 .

[0023] Figure 6 This is a bottom view of the roller bracket according to an embodiment of the present invention.

[0024] Figure 7 This is a schematic diagram of the structure of the roller, brake function component, and actuating block in an embodiment of this utility model. Detailed Implementation

[0025] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0026] like Figure 1-7 The roller assembly shown includes a roller bracket 1, rollers 2 disposed on both sides of the roller bracket 1, and a case bracket (not shown) disposed on the roller bracket 1. The roller bracket 1 has a vertically arranged shock-absorbing cavity 11. The shock-absorbing cavity 11 has a shock-absorbing block 3 that can slide along the inner wall of the shock-absorbing cavity 11. The shock-absorbing block 3 has a connection hole 31 that connects to the rollers 2. The cavity wall of the shock-absorbing cavity 11 has a waist-shaped groove 111 that matches the connection hole 31. The shock-absorbing cavity 11 also has a shock-absorbing spring 4. The inner wall of the shock-absorbing cavity 11 has a cross protrusion 112. One end of the shock-absorbing spring 4 is sleeved on the outside of the cross protrusion 112. The end of the shock-absorbing block 3 has a cylindrical block 32 that is sleeved on the shock-absorbing spring 4. The bottom of the shock-absorbing cavity 11 has an opening.

[0027] A brake frame 12 is provided on the roller bracket 1. A brake function component 5 and a toggle block 6 are installed inside the brake frame 12. A brake spring (not shown in the figure) is provided between the first end face 51 of the brake function component 5 away from the toggle block 6 and the inner wall of the brake frame 12. Both sides of the first end face 51 extending to the outside of the brake frame 12 are provided with teeth 52. A fixed toothed ring 21 that meshes with the teeth 52 is provided on the side of the roller 2 near the roller bracket 1. The toggle block 6 is hinged to the brake frame 12. One end of the toggle block 6 extends into the brake frame 12 and is linked with the brake function component 5. The other end extends to the outside of the brake frame 12. The second end face 52 of the brake function component 5 facing the toggle block 6 is provided with a hemispherical groove 53. The end of the toggle block 6 is provided with a hemispherical protrusion 61 that matches the hemispherical groove 53. The end of the toggle block 6 located outside the brake frame 12 is a V-shaped block 62. An anti-slip strip 63 is provided on the end face of the V-shaped block 62.

[0028] When the roller assembly rolls on bumpy roads, the shock-absorbing blocks and springs dampen the suitcase. During the damping process, the shock-absorbing blocks slide vertically relative to each other within the damping cavity, absorbing and buffering the impact of the bumpy road surface on the roller. The waist-shaped groove design within the damping cavity prevents the damping spring from being over-compressed, thus improving its service life. When going uphill, downhill, in moving subway cars, or in bus cars, to prevent the suitcase from sliding on its own, the actuating block is activated. The hemispherical protrusion on the actuating block pushes the braking component to move, causing the teeth on the braking component to engage with the fixed toothed ring on the roller, thereby achieving braking. Conversely, by activating the actuating block in the opposite direction, the actuating block disengages from the braking component, and the braking component, under the action of the brake spring, separates from the fixed toothed ring, allowing the roller to operate normally.

Claims

1. A roller assembly suitable for a suitcase, characterized in that: The device includes a roller bracket, rollers on both sides of the roller bracket, and a housing bracket mounted on the roller bracket. The roller bracket has a vertically oriented shock-absorbing cavity. The shock-absorbing cavity contains a shock-absorbing block that can slide along the inner wall of the shock-absorbing cavity. The shock-absorbing block has a connection hole for connecting to the roller. The cavity wall of the shock-absorbing cavity has an oblong groove that matches the connection hole. The shock-absorbing cavity also contains a shock-absorbing spring. One end of the shock-absorbing spring is connected to the top wall of the shock-absorbing cavity, and the other end is sleeved with the shock-absorbing block. The bottom of the shock-absorbing cavity has an opening.

2. The roller assembly for a suitcase according to claim 1, characterized in that: The inner wall of the damping cavity is provided with a cross-shaped protrusion, one end of the damping spring is sleeved on the outside of the cross-shaped protrusion, and the end of the damping block is provided with a cylindrical block that is sleeved with the damping spring.

3. A roller assembly suitable for a suitcase according to claim 1, characterized in that: A brake frame is provided on the roller bracket. A brake function component and a toggle block are installed inside the brake frame. A brake spring is provided between the first end face of the brake function component away from the toggle block and the inner wall of the brake frame. Teeth are provided on both sides of the first end face extending outside the brake frame. A fixed toothed ring that meshes with the teeth is provided on the side of the roller near the roller bracket. The toggle block is hinged to the brake frame, with one end extending into the brake frame and linked with the brake function component, and the other end extending outside the brake frame.

4. A roller assembly suitable for a suitcase according to claim 3, characterized in that: The brake function component has a hemispherical groove on the second end face facing the actuating block, and the actuating block has a hemispherical protrusion at the end that matches the hemispherical groove.

5. A roller assembly suitable for a suitcase according to claim 3, characterized in that: The actuating block is a V-shaped block located outside the brake frame, and an anti-slip strip is provided on the end face of the V-shaped block.

Images