Support for draw-bar box wheels

Abstract

The utility model discloses a bracket for draw-bar box wheels, which comprises a bracket bottom plate, the top of the bracket bottom plate is fixedly connected with a bracket side plate, the bottom of the bracket bottom plate is fixedly connected with a U-shaped frame plate and a fixing strip, the bottom of the fixing strip is fixedly connected with two driven rollers, and the inner side of the U-shaped frame plate is fixedly connected with two buffer cylinders. Connecting columns are slidably connected between the inner walls of the two buffer cylinders, the bottoms of the connecting columns are rotatably connected with guide rollers, buffer structures are arranged in the buffer cylinders, a pull rod box is fixedly connected to one side of the support side plate, a pull rod is slidably connected to the top of the pull rod box, and a positioning structure is arranged in the pull rod. The positioning structure is used for limiting the pull rod. According to the utility model, the impact on the guide roller is buffered through the buffer structure, so that the guide roller is protected to a certain extent, the guide roller is prevented from being influenced by external factors such as a road surface and the like to damage the bracket, and the service life of the draw-bar box is further prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of trolley cases, in particular to a wheel bracket for a trolley case. Background Art

[0002] A trolley case is a suitcase with wheels and a stand, which makes it easy for travelers to move between airports and stations. The design of the trolley case makes travel more convenient as there is no need to carry heavy luggage back and forth.

[0003] There is a common problem with the current trolley case designs on the market: the wheel brackets at the bottom of the trolley case are usually fixed structures or fixedly connected to the case body. This design can cause severe vibrations to the items in the case when used on bumpy roads. It is also easy to damage the wheel brackets during use, and even cause serious consequences such as the wheels falling off. Utility Model Content

[0004] The utility model aims to provide a wheel bracket for a trolley case to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wheel bracket for a trolley case, comprising a bracket bottom plate, the top of the bracket bottom plate is fixedly connected to a bracket side plate, the bottom of the bracket bottom plate is fixedly connected to a U-shaped frame plate and a fixing strip, the bottom of the fixing strip is fixedly connected to two driven rollers, the inner side of the U-shaped frame plate is fixedly connected to two buffer cylinders, a connecting column is slidably connected between the inner walls of the two buffer cylinders, the bottom of the connecting column is rotatably connected to a guide roller, a buffer structure is arranged inside the buffer cylinder, a trolley box is fixedly connected to one side of the bracket side plate, a pulling rod is slidably connected to the top of the trolley box, a positioning structure is arranged inside the pulling rod, and the positioning structure is used to limit the pulling rod.

[0006] As a further preferred embodiment of the present technical solution, the buffer structure includes a connecting rod, the connecting rod is fixedly connected to the top of the connecting column, and a buffer spring is fixedly connected to the outside of the connecting rod and located between the connecting column and the inner wall of the buffer tube.

[0007] As a further preferred embodiment of the present technical solution, the positioning structure includes two slide grooves, both of which are opened on one side of the pull rod, a positioning block is slidably connected between the inner walls of the slide grooves, and a positioning spring is fixedly connected between the positioning block and the inner wall of the slide groove.

[0008] As a further preferred embodiment of the present technical solution, one end of the connecting rod extends to the outside of the buffer cylinder and is fixedly connected to a limiting plate.

[0009] As a further preferred embodiment of the present technical solution, limiting grooves are provided on both sides of the inner wall of the buffer cylinder, limiting blocks are fixedly connected to both sides of the connecting column, and the outer side of the limiting block is slidably connected to the inner wall of the limiting groove.

[0010] As a further preferred embodiment of the present technical solution, two rows of positioning holes are equidistantly formed on the outer side of the pull rod box, and the outer side of the positioning block is slidably connected to the inner wall of the positioning hole.

[0011] The utility model provides a wheel bracket for a trolley case, which has the following beneficial effects:

[0012] (1) The utility model uses a buffer structure to buffer the impact on the guide roller, thereby protecting the guide roller to a certain extent, preventing the guide roller from being damaged by external factors such as the road surface, thereby extending the service life of the suitcase.

[0013] (2) The utility model limits the moving position of the pull rod through the positioning structure, which facilitates the user to adjust the pull rod to a suitable height and improves the efficiency of transporting luggage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the buffer cylinder of the utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the pull rod of the utility model;

[0017] Figure 4 This is a schematic diagram of the guide roller connection structure of the utility model;

[0018] Figure 5 For the utility model Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0019] In the figure: 1. bracket bottom plate; 2. bracket side plate; 3. U-shaped frame plate; 4. fixing bar; 5. driven roller; 6. buffer cylinder; 7. guide roller; 8. pull rod box; 9. positioning hole; 10. pulling rod; 11. slide groove; 12. positioning block; 13. positioning spring; 14. connecting column; 15. limit block; 16. limit groove; 17. connecting rod; 18. buffer spring; 19. limit plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] The utility model provides a technical solution: Figure 1-Figure 5 As shown, in the present embodiment, a wheel bracket for a trolley case includes a bracket bottom plate 1, the top of the bracket bottom plate 1 is fixedly connected to a bracket side plate 2, the bottom of the bracket bottom plate 1 is fixedly connected to a U-shaped frame plate 3 and a fixing bar 4, the bottom of the fixing bar 4 is fixedly connected to two driven rollers 5, the inner side of the U-shaped frame plate 3 is fixedly connected to two buffer cylinders 6, a connecting column 14 is slidably connected between the inner walls of the two buffer cylinders 6, the bottom of the connecting column 14 is rotatably connected to a guide roller 7, a buffer structure is arranged inside the buffer cylinder 6, a trolley box 8 is fixedly connected to one side of the bracket side plate 2, a pulling rod 10 is slidably connected to the top of the trolley box 8, a positioning structure is arranged inside the pulling rod 10, and the positioning structure is used to limit the pulling rod 10.

[0022] When the trolley case is in use, the positioning structure is used to position the pulling rod 10 at a suitable height, and then the user manually pulls the pulling rod 10, and the pulling rod 10 cooperates with the two guide rollers 7 and the two driven rollers 5 to drive the trolley case to move and transport the luggage. During the transportation process, the guide rollers 7 are used to navigate the direction of transportation. At the same time, when dealing with bumpy roads, the buffer structure arranged inside the buffer cylinder 6 buffers the impact on the guide rollers 7, further reducing the impact force, protecting the guide rollers 7, the bracket bottom plate 1 and the driven rollers 5, and further extending the service life of the trolley case wheel bracket.

[0023] like Figure 1-Figure 5 As shown, the buffer structure includes a connecting rod 17, which is fixedly connected to the top of the connecting column 14. A buffer spring 18 is fixedly connected to the outer side of the connecting rod 17 and located between the connecting column 14 and the inner wall of the buffer tube 6. One end of the connecting rod 17 extends to the outer side of the buffer tube 6 and is fixedly connected to a limiting plate 19. Limiting grooves 16 are provided on both sides of the inner wall of the buffer tube 6. Limiting blocks 15 are fixedly connected on both sides of the connecting column 14. The outer side of the limiting block 15 is slidably connected to the inner wall of the limiting groove 16.

[0024] When the guide roller 7 is impacted, the connecting column 14 slides inside the buffer tube 6 with the cooperation of the limit block 15, the limit groove 16 and the limit plate 19, and compresses the buffer spring 18. The elastic force of the buffer spring 18 is used to buffer the impact, thereby further reducing the impact, alleviating the impact on the bracket, further protecting the bracket, and extending the service life of the trolley case.

[0025] like Figure 1-Figure 5As shown, the positioning structure includes two slide grooves 11, and the two slide grooves 11 are both opened on one side of the pull rod 10. A positioning block 12 is slidably connected between the inner walls of the slide grooves 11, and a positioning spring 13 is fixedly connected between the positioning block 12 and the inner wall of the slide groove 11. Two rows of positioning holes 9 are equidistantly opened on the outer side of the pull rod box 8, and the outer side of the positioning block 12 is slidably connected to the inner wall of the positioning hole 9.

[0026] The positioning block 12 is pressed according to actual usage requirements to move the positioning block 12 between the inner walls of the positioning hole 9. When the pull rod 10 moves to the required height, the positioning block 12 cooperates with the positioning hole 9 to position the pull rod 10, which is convenient for the user to adjust the pull rod 10 to an appropriate height, thereby improving the efficiency of transporting luggage.

[0027] The utility model provides a wheel bracket for a trolley case, and the specific working principle is as follows: when the trolley case is in use, the positioning block 12 is pressed according to actual use requirements, so that the positioning block 12 moves between the inner walls of the positioning hole 9, and when the pulling rod 10 moves to the required height, the positioning block 12 cooperates with the positioning hole 9 to position the pulling rod 10, so that the pulling rod 10 is fixed, and then the user manually pulls the pulling rod 10, so that the pulling rod 10 cooperates with two guide rollers 7 and two driven rollers 5 to drive the trolley case to move and transport the luggage. During the transportation process, the guide roller 7 is used to navigate the direction of transportation. When the guide roller 7 is impacted, the connecting column 14 will slide inside the buffer tube 6 under the cooperation of the limit block 15, the limit groove 16 and the limit plate 19, and the impact is buffered by compressing the buffer spring 18 and utilizing the elastic force of the buffer spring 18.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wheel support for a trolley case, comprising a support bottom plate (1), characterized in that: The top of the bracket bottom plate (1) is fixedly connected to the bracket side plate (2), the bottom of the bracket bottom plate (1) is fixedly connected to the U-shaped frame plate (3) and the fixing strip (4), the bottom of the fixing strip (4) is fixedly connected to two driven rollers (5), the inner side of the U-shaped frame plate (3) is fixedly connected to two buffer cylinders (6), the inner walls of the two buffer cylinders (6) are slidably connected with a connecting column (14), the bottom of the connecting column (14) is rotatably connected to a guide roller (7), the buffer cylinder (6) is provided with a buffer structure, one side of the bracket side plate (2) is fixedly connected to a pull rod box (8), the top of the pull rod box (8) is slidably connected to a pull rod (10), the pull rod (10) is provided with a positioning structure inside, and the positioning structure is used to limit the pull rod (10).

2. A wheel bracket for a trolley case according to claim 1, characterized in that: The buffer structure comprises a connecting rod (17), wherein the connecting rod (17) is fixedly connected to the top of the connecting column (14), and a buffer spring (18) is fixedly connected to the outside of the connecting rod (17) and located between the connecting column (14) and the inner wall of the buffer cylinder (6).

3. The wheel bracket for a trolley case according to claim 1, characterized in that: The positioning structure comprises two slide grooves (11), both of which are opened on one side of the pulling rod (10), a positioning block (12) is slidably connected between the inner walls of the slide grooves (11), and a positioning spring (13) is fixedly connected between the positioning block (12) and the inner wall of the slide groove (11).

4. The wheel bracket for a trolley case according to claim 2, characterized in that: One end of the connecting rod (17) extends to the outside of the buffer cylinder (6) and is fixedly connected to the limiting plate (19).

5. The wheel bracket for a trolley case according to claim 2, characterized in that: Limiting grooves (16) are provided on both sides of the inner wall of the buffer cylinder (6), and limiting blocks (15) are fixedly connected to both sides of the connecting column (14), and the outer side of the limiting block (15) is slidably connected to the inner wall of the limiting groove (16).

6. The wheel bracket for a trolley case according to claim 3, characterized in that: Two rows of positioning holes (9) are equidistantly provided on the outer side of the pull rod box (8), and the outer side of the positioning block (12) is slidably connected to the inner wall of the positioning hole (9).

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