A shock-absorbing roller and a trolley case using the same

Abstract

The utility model relates to the field of draw-bar box, disclose a shock absorbing gyro wheel and utilize the draw-bar box of gyro wheel. The shock absorbing gyro wheel, including several mounting frames, several mounting frames are arranged on several gyro body respectively, the top of several mounting frames all is equipped with L shaped board, the inside of several L shaped boards all are connected with the shaft through bearing, the top surface of several movable plates all are fixed with first spring, the threaded end of several screw rods all are connected with nut threadedly. In the utility model, through the cooperation of mounting frame, gyro body, L shaped board, shaft, mounting frame, movable plate, fixed plate, movable cylinder, screw rod, first spring and nut, the problem that the gyro body of traditional draw-bar box is poor in shock resistance can be solved, the stable and reliable shock absorbing effect is provided, the first spring design of adjustable can adapt to the requirement of shock absorbing effect under different weight, different road conditions, improve the applicability and practicality of the shock absorbing gyro wheel.

Description

Technical Field

[0001] This utility model relates to the technical field of trolley cases, specifically to a shock-absorbing roller and a trolley case using the roller. Background Technology

[0002] A rolling suitcase refers to a suitcase equipped with a pull handle and wheels. It is widely used due to its convenience. Rolling suitcases are further categorized by the pull handle: single-tube and double-tube handles. The handle tubes also come in square and round shapes to facilitate dragging and significantly reduce the burden of walking. The wheels are one of the main components of a rolling suitcase, and their performance significantly impacts the overall quality of the bag. During use, wheels are frequently subjected to bumps and knocks, and the connecting shaft is most susceptible to breakage during these impacts, causing wheel damage. Traditional rolling suitcase wheels lack cushioning and shock absorption capabilities.

[0003] The technical features of the shock-absorbing casters for a trolley case disclosed in Chinese Patent Publication No. CN212194937U are as follows: A mounting shell is included, with first springs fixedly connected to both sides of the top of the inner cavity of the mounting shell. A fixing block is fixedly connected to the bottom of the first springs, and the bottom of the fixing block extends to the outside of the mounting shell. A mounting bracket is fixedly connected to the bottom of the mounting shell, and a movable shaft is provided through the right side of the surface of the mounting bracket. A roller is fixedly connected to the surface of the movable shaft, and a limit rod is fixedly connected to the top of the fixing block.

[0004] In the above solution, the shock absorption effect of the suitcase roller is achieved by mounting the shell, the first spring, the fixing block, the mounting bracket and the movable shaft. However, this solution has the following drawback: the stiffness of the first spring is a fixed value, and the shock absorption effect cannot be adjusted according to the weight of the suitcase or the road conditions. Utility Model Content

[0005] The purpose of this invention is to provide a shock-absorbing roller and a trolley case using the roller, in order to solve the problem that the stiffness of the first spring is a fixed value and cannot be adjusted according to the load weight of the trolley case or the road conditions.

[0006] To achieve the aforementioned utility model objectives, the present utility model adopts the following technical solution: a shock-absorbing roller, comprising a plurality of mounting brackets, each mounting bracket being respectively disposed on a plurality of roller bodies; an L-shaped plate being provided above each mounting bracket; a rotating shaft being connected inside each L-shaped plate via bearings; a mounting frame being fixed to the bottom end of each rotating shaft; a movable plate being movably disposed inside each mounting frame; a fixed plate being fixed to the top surface of each mounting bracket; and a movable cylinder being fixed to the top surface of each fixed plate. Each of the mounting frames has a through hole on its inner bottom surface. Several movable cylinders are slidably inserted into the through holes of the mounting frames and are fixedly connected to the bottom surfaces of several movable plates. Each of the mounting frames has a screw fixed to its inner top surface. Each of the movable plates has a through hole on its top surface. Each of the movable plates has a first spring fixed to its top surface. Each of the first springs is wrapped around the screws. The top ends of each of the first springs are in contact with the bottom surfaces of several nuts. Nuts are threadedly connected to the threaded ends of the screws.

[0007] Preferably, the inner walls of the plurality of mounting frames are provided with sliding grooves on the left and right sides, and the movable plates are fixed with sliders on the left and right sides, and the two sliders are respectively slidably disposed in the two sliding grooves.

[0008] Preferably, sleeves are fixed to the outer sides of several mounting frames, and limit rods are fixed to the top surfaces of several mounting brackets. Several limit rods are slidably inserted into several sleeves. Second springs are fixed between several mounting brackets and several sleeves, and several second springs are respectively wrapped around several limit rods.

[0009] Preferably, a rubber ring is fixed to the outer wall of each of the nuts, and the outer wall of each of the rubber rings is provided with anti-slip texture.

[0010] Preferably, the outer walls of several of the roller bodies are fixed with shock-absorbing rubber coating.

[0011] This utility model also discloses a trolley case using the roller, including a trolley case body and the shock-absorbing roller. The outer wall of the trolley case body has a plurality of threaded grooves on the front and rear sides respectively. The plurality of threaded grooves are connected to the shock-absorbing roller through a plurality of L-shaped plates. The outer side of the plurality of L-shaped plates has two threaded holes respectively. Bolts are threaded into the two threaded holes respectively. The threaded end of the bolt is threaded into the inside of the threaded groove.

[0012] Compared with existing technologies, a shock-absorbing roller that adopts the above-mentioned technical solution has the following beneficial effects:

[0013] 1. In use, through the synergistic action of the mounting bracket, roller body, L-shaped plate, rotating shaft, mounting frame, movable plate, fixed plate, movable cylinder, screw, first spring and nut, the problem of poor shock resistance of the roller body of traditional trolley cases can be solved, providing a stable and reliable shock absorption effect. At the same time, the adjustable first spring design can adapt to the requirements of shock absorption effect under different weights and different road conditions, improving the applicability and practicality of the shock-absorbing roller.

[0014] Second, during use, the movable plate is designed to remain stable without shifting or wobbling during vertical movement. During sliding, the second spring surrounding the limit rod is compressed or stretched, absorbing and dissipating vibration energy through its elasticity, further reducing the impact of vibration on the pull-along case and enhancing its shock absorption capacity. This effectively reduces discomfort from friction between the hand and the nut, improving ease and comfort of operation. The anti-slip texture further enhances the anti-slip effect; during nut rotation, the anti-slip texture increases friction between the hand and the rubber ring, preventing inaccurate adjustments or operational errors due to slippage, thus improving safety and reliability.

[0015] Thirdly, during use, the shock-absorbing rubber coating can deform appropriately according to uneven ground conditions, absorbing and dispersing the vibration energy transmitted from the ground. This effectively reduces the impact of vibration on the roller body and the entire luggage case. Compared with ordinary rollers, the roller body with shock-absorbing rubber coating can improve the shock absorption effect, further enhancing the user experience. When maintenance or replacement of the shock-absorbing roller is required, simply unscrew the bolt in the reverse direction and remove it from the threaded hole and groove to remove the shock-absorbing roller. This makes the disassembly and assembly process of the shock-absorbing roller simple and quick, facilitating users to perform regular maintenance and component replacement of the luggage case. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of an embodiment.

[0017] Figure 2 This is a breakdown diagram of an embodiment.

[0018] Figure 3 This is a schematic diagram showing the disassembled mounting bracket and mounting frame in an embodiment.

[0019] Figure 4 For the example Figure 2 Enlarged diagram of point A in the middle.

[0020] In the diagram: 1. Mounting bracket; 2. Roller body; 3. L-shaped plate; 4. Rotating shaft; 5. Mounting frame; 6. Movable plate; 7. Fixed plate; 8. Movable cylinder; 9. Screw; 10. First spring; 11. Nut; 12. Slide groove; 13. Slider; 14. Sleeve; 15. Limiting rod; 16. Second spring; 17. Rubber ring; 18. Anti-slip texture; 19. Shock-absorbing rubber coating; 20. Pull rod housing; 21. Threaded groove; 22. Threaded hole; 23. Bolt. Detailed Implementation

[0021] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] Example 1

[0023] like Figures 1-4 As shown, a shock-absorbing roller includes several mounting brackets 1, which are respectively mounted on several roller bodies 2. Each mounting bracket 1 has an L-shaped plate 3 above it. Each L-shaped plate 3 has a rotating shaft 4 connected to its interior via bearings. Each rotating shaft 4 has a mounting frame 5 fixed to its bottom end. Each mounting frame 5 has a movable plate 6 movably mounted inside it. Each mounting bracket 1 has a fixed plate 7 fixed to its top surface. Each fixed plate 7 has a movable cylinder 8 fixed to its top surface. Each mounting frame 5 has a through-hole on its inner bottom surface. A number of movable cylinders 8 are slidably inserted into the through holes of a number of mounting frames 5 and fixedly connected to the bottom surfaces of a number of movable plates 6. A screw 9 is fixed to the top surface of each of the mounting frames 5. A through hole is opened on the top surface of each of the movable plates 6. A first spring 10 is fixed to the top surface of each of the movable plates 6. The first springs 10 are all wrapped around the screws 9. The top ends of the first springs 10 are in contact with the bottom surfaces of a number of nuts 11. Nuts 11 are threadedly connected to the threaded ends of the screws 9.

[0024] During use, when the user installs several mounting brackets 1, L-shaped plates 3, and roller bodies 2 on the pull rod case 20, the roller body 2 will vibrate up and down due to uneven ground and other factors during the movement of the pull rod case 20. At this time, the mounting brackets 1 on the roller body 2 will drive the fixed plate 7 to move up and down, thereby allowing the movable cylinder 8 fixed on the fixed plate 7 to move up and down flexibly in the through hole of the mounting frame 5. This movement drives the movable plate 6 to move up and down inside the mounting frame 5. During the up and down movement of the movable plate 6, the first spring 10 wrapped around the screw 9 will be compressed. The first spring 10, with its own elastic characteristics, can effectively absorb and disperse the energy generated by the vibration, thereby achieving the purpose of shock absorption and strengthening the support of the pull rod case 20, making the pull rod case 20 more stable during the movement.

[0025] Furthermore, users can flexibly adjust the stiffness of the first spring 10 according to actual needs. Simply rotate the nut 11 to move it downward along the screw 9, thereby compressing the first spring 10 and changing its initial compression. In this way, the elastic properties of the first spring 10 can be adjusted to meet the requirements of shock absorption under different weights and road conditions, thus improving the applicability and practicality of the shock-absorbing roller.

[0026] Through the coordinated action of mounting bracket 1, roller body 2, L-shaped plate 3, rotating shaft 4, mounting frame 5, movable plate 6, fixed plate 7, movable cylinder 8, screw 9, first spring 10 and nut 11, the problem of poor shock resistance of the roller body 2 of traditional suitcases can be solved, providing a stable and reliable shock absorption effect. At the same time, the adjustable first spring 10 design can adapt to the requirements of shock absorption effect under different weights and different road conditions, improving the applicability and practicality of the shock-absorbing roller.

[0027] like Figures 1-3 As shown, the inner walls of several mounting frames 5 are provided with sliding grooves 12 on the left and right sides, and the left and right sides of several movable plates 6 are fixed with sliders 13. The two sliders 13 are slidably arranged in the two sliding grooves 12 respectively. The outer sides of several mounting frames 5 are fixed with sleeves 14 respectively. The top surface of several mounting brackets 1 is fixed with limit rods 15. The limit rods 15 are slidably inserted into the sleeves 14 respectively. The mounting brackets 1 and the sleeves 14 are fixed with second springs 16 respectively. The second springs 16 are respectively wrapped around the limit rods 15.

[0028] During use, when the movable plate 6 moves up and down inside the mounting frame 5, the slider 13 slides inside the slide groove 12, ensuring that the movable plate 6 does not shift or wobble during the up and down movement, thus improving stability. When the pull rod case 20 encounters a large vibration or impact during movement, the sleeve 14, the limiting rod 15, and the second spring 16 work together to absorb shock. When the mounting frame 5 is subjected to vibration, it will shake to a certain extent. At this time, the sleeve 14 fixed to the outside of the mounting frame 5 will slide up and down along the limiting rod 15 fixed to the mounting bracket 1. During the sliding process, the second spring 16 surrounding the limiting rod 15 will be compressed or stretched. With its elastic force, it absorbs and dissipates vibration energy, further reducing the impact of vibration on the pull rod case 20, and further enhancing the shock absorption capability of the pull rod case 20.

[0029] like Figures 1-3 As shown, a number of nuts 11 are fixed with rubber rings 17 on their outer walls, and the outer walls of the rubber rings 17 are provided with anti-slip textures 18. The outer walls of the roller bodies 2 are fixed with shock-absorbing rubber coatings 19.

[0030] In use, when the user needs to rotate the nut 11 to adjust the stiffness of the first spring 10, the user can directly hold the rubber ring 17 by hand. Compared with direct contact with the metal nut 11, the feel is more comfortable and can effectively reduce the discomfort of friction between the hand and the nut 11, improving the convenience and comfort of operation. The anti-slip texture 18 further enhances the anti-slip effect. During the rotation of the nut 11, the anti-slip texture 18 can increase the friction between the hand and the rubber ring 17, avoiding inaccurate adjustment or operation errors due to slippage, thus improving the safety and reliability of use. The shock-absorbing rubber coating 19 is made of TPU. TPU material has excellent properties such as high elasticity, wear resistance, and oil resistance. When the trolley case 20 is moving, and the roller body 2 contacts and rolls with the ground, the shock-absorbing rubber coating 19 will first interact with the ground. Due to its good elasticity, the shock-absorbing rubber coating 19 can deform appropriately according to the unevenness of the ground, absorbing and dispersing the vibration energy transmitted from the ground, thereby effectively reducing the impact of vibration on the roller body 2 and the entire trolley case 20. Compared with ordinary rollers, the roller body 2 with shock-absorbing rubber coating 19 can improve the shock absorption effect and further enhance the user experience.

[0031] Example 2

[0032] like Figures 1-4 As shown, this utility model also discloses a trolley case using the roller, including a trolley case body 20 and a shock-absorbing roller. The trolley case body 20 is characterized in that: a plurality of threaded grooves 21 are respectively opened on the front and rear sides of the outer wall of the trolley case body 20. The plurality of threaded grooves 21 are respectively connected to the shock-absorbing roller through a plurality of L-shaped plates 3. Two threaded holes 22 are respectively opened on the outer side of the plurality of L-shaped plates 3. Bolts 23 are threadedly connected in the two threaded holes 22 respectively. The threaded end of the bolt 23 is threadedly connected to the inside of the threaded groove 21.

[0033] In use, when it is necessary to install the shock-absorbing roller onto the trolley case 20, the user only needs to align the L-shaped plate 3 with the threaded groove 21 opened on the front or rear side of the outer wall of the trolley case 20, so that the two threaded holes 22 opened on the outer side of the L-shaped plate 3 correspond to the positions of the threaded groove 21, and then screw the bolt 23 into the threaded hole 22 to securely install the shock-absorbing roller onto the trolley case. When maintenance or replacement of the shock-absorbing roller is required, simply unscrew the bolt 23 in the reverse direction and remove it from the threaded hole 22 and the threaded groove 21 to remove the shock-absorbing roller. This makes the disassembly and assembly process of the shock-absorbing roller simple and quick, and facilitates the user to perform regular maintenance and component replacement on the trolley case 20.

[0034] 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 shock-absorbing roller, comprising a plurality of mounting brackets (1), wherein the plurality of mounting brackets (1) are respectively disposed on a plurality of roller bodies (2), characterized in that, Each of the mounting brackets (1) has an L-shaped plate (3) on its top. Each of the L-shaped plates (3) has a rotating shaft (4) connected to its interior via bearings. Each of the rotating shafts (4) has a mounting frame (5) fixed to its bottom end. Each of the mounting frames (5) has a movable plate (6) movably mounted inside it. Each of the mounting brackets (1) has a fixed plate (7) fixed to its top surface. Each of the fixed plates (7) has a movable cylinder (8) fixed to its top surface. Each of the mounting frames (5) has a through hole on its bottom surface. Each of the movable cylinders (8) is slidably inserted into the mounting frame. The through holes of several mounting frames (5) are respectively fixedly connected to the bottom surface of several movable plates (6). The top surface of each of the mounting frames (5) is fixed with a screw (9). The top surface of each of the movable plates (6) is provided with a through hole. The top surface of each of the movable plates (6) is fixed with a first spring (10). The first spring (10) is wrapped around the screw (9). The top of each of the first spring (10) is in contact with the bottom surface of each of the nuts (11). The threaded end of each of the screw (9) is threaded with a nut (11).

2. The shock-absorbing roller according to claim 1, characterized in that: The inner walls of several mounting frames (5) are provided with sliding grooves (12) on the left and right sides, and the movable plates (6) are fixed with sliders (13) on the left and right sides, and the two sliders (13) are respectively slidably arranged in the two sliding grooves (12).

3. A shock-absorbing roller according to claim 2, characterized in that: A sleeve (14) is fixed to the outer side of each of the mounting frames (5), and a limit rod (15) is fixed to the top surface of each of the mounting brackets (1). The limit rods (15) are slidably inserted into the sleeves (14). A second spring (16) is fixed between each of the mounting brackets (1) and the sleeves (14). The second springs (16) are respectively wrapped around the limit rods (15).

4. A shock-absorbing roller according to claim 1, characterized in that: A rubber ring (17) is fixed to the outer wall of several nuts (11), and anti-slip texture (18) is provided on the outer wall of several rubber rings (17).

5. A shock-absorbing roller according to claim 4, characterized in that: The outer walls of several of the roller bodies (2) are fixed with shock-absorbing rubber coating (19).

6. A trolley case using the roller, comprising a trolley case body (20) and a shock-absorbing roller as described in any one of claims 1-5, characterized in that: The outer wall of the pull rod box (20) has several threaded grooves (21) on the front and rear sides respectively. The several threaded grooves (21) are connected to the shock-absorbing rollers through several L-shaped plates (3). Two threaded holes (22) are opened on the outer side of the several L-shaped plates (3). Bolts (23) are threaded into the two threaded holes (22) respectively. The threaded end of the bolt (23) is threaded into the threaded groove (21).

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