A travel trolley case with easy replacement of wheels

Abstract

This utility model relates to a travel trolley case with easily replaceable wheels. The structure includes: a case body, a mounting base, a wheel body, a rotating shaft, a buckle seat, a buckle plate, a buckle hole, and a piston rod. The mounting base is symmetrically fixed to the bottom of the case body. Wheel bodies are located on both sides of the mounting base. A rotating shaft is symmetrically installed inside the mounting base, and the wheel body passes through the rotating shaft. A buckle seat is fixedly connected to the end of the rotating shaft away from the mounting base. A buckle plate is fitted onto the buckle seat. By installing the buckle seat, buckle plate, buckle hole, and piston rod, pulling the piston rod out of the buckle hole facilitates the separation of the buckle seat and buckle plate, allowing the wheel body to be removed for replacement. The buckle plate is brought close to the buckle seat, and the equilateral hexagonal buckle seat passes through the equilateral hexagonal hole in the buckle plate. The piston rod enters the buckle hole, securely connecting the buckle seat and buckle plate, facilitating quick assembly of the wheel body.

Description

Technical Field

[0001] This utility model relates to the field of trolley case technology, and in particular to a travel trolley case with easily replaceable wheels. Background Technology

[0002] Rolling suitcases are a common piece of equipment for modern travel, combining storage and portability. They typically consist of a body, a handle, and wheels. The body is made of various materials, including plastic, metal, and fabric, to meet different needs. Some are sturdy and durable, while others are lightweight and flexible. The handle is extendable, making it easy to adjust to different heights and usage scenarios, resulting in a more comfortable ride. The wheel design has been continuously optimized, with omnidirectional wheels allowing for flexible steering and easy movement on various surfaces. Rolling suitcases come in different sizes and often feature internal compartments and straps for easy organization of items, providing great convenience for people's travel, business trips, and other travel activities.

[0003] There is a standard procedure for replacing the wheels of a travel suitcase. First, the exact location of the damaged wheel must be accurately identified, which is the basis for subsequent operations. Next, the old wheel must be carefully removed with a screwdriver, taking care not to damage the suitcase or other parts. Then, the new wheel is installed in the corresponding position, and the screw is tightened to secure it. However, this replacement method has obvious drawbacks. Not only is the whole process cumbersome and time-consuming, but it also requires continuous force during the operation, which is very physically demanding, resulting in low replacement efficiency and inconvenience to the user.

[0004] Therefore, in response to the above problems, a new type of travel suitcase with easily replaceable wheels is proposed. Utility Model Content

[0005] To overcome the problems existing in related technologies, this utility model provides a travel suitcase with easy-to-replace rollers, which can quickly assemble the rollers using a snap-fit ​​structure, thereby improving the efficiency of replacing travel suitcase rollers.

[0006] To achieve the above objectives, the first aspect of this utility model provides a travel suitcase with easily replaceable wheels, comprising:

[0007] Box body, mounting base, roller body, rotating shaft, buckle seat, buckle plate, buckle hole and piston rod;

[0008] The bottom of the housing is symmetrically fixedly connected to an assembly base. Roller bodies are provided on both sides of the assembly base. Rotating shafts are symmetrically installed inside the assembly base. The roller bodies are connected to the rotating shafts. A buckle seat is fixedly connected to the end of the rotating shaft away from the assembly base. A buckle plate is fitted on the buckle seat. Buckle holes are symmetrically opened on the buckle seat. Piston rods that are connected to the buckle holes are symmetrically slidably installed inside the buckle plate.

[0009] Furthermore, the buckle seat is an equilateral hexagon.

[0010] Furthermore, an upper extrusion rod is symmetrically slidably installed inside the buckle plate, and a lower extrusion rod is symmetrically installed below the upper extrusion rod and slidably connected to the inside of the mounting base. Both the upper and lower extrusion rods are fixedly connected to the piston rod. A first synchronous rack is fixedly connected to the upper extrusion rod and slidably connected to the inner wall of the buckle plate. A second synchronous rack is fixedly connected to the lower extrusion rod and slidably connected to the inside of the mounting base. Synchronous gears are symmetrically rotatably connected inside the buckle plate, and both the first and second synchronous racks are meshed with the synchronous gears.

[0011] Furthermore, a first spring, which is fixedly connected to the upper extrusion rod, is symmetrically fixed to the inner wall of the buckle plate, and a second spring, which is fixedly connected to the inner wall of the buckle plate, is symmetrically installed below the first spring, with the top end of the second spring fixedly connected to the lower extrusion rod.

[0012] Furthermore, anti-slip strips are installed at equal intervals on the surface of the piston rod.

[0013] Furthermore, the assembly base is symmetrically rotatably connected to a first threaded rod that meshes with the inside of a rotating shaft, and a guide limiting block that is symmetrically fixedly connected to the rotating shaft and slidably connected to the inner wall of the assembly base.

[0014] Furthermore, the guide limit block is T-shaped.

[0015] Furthermore, a linkage slider is slidably installed inside the assembly base, and a linkage rack that is symmetrically fixedly connected to the linkage slider and slidably connected to the inside of the assembly base is provided. A second threaded rod that meshes with the linkage slider is rotatably connected to one side of the assembly base.

[0016] The technical solution provided by this utility model can include the following beneficial effects:

[0017] In this example, by installing the buckle seat, buckle plate, buckle hole, and piston rod, the piston rod is pulled out of the buckle hole, making it easy to separate the buckle seat and buckle plate. The roller body can then be removed for replacement. The buckle plate is brought close to the buckle seat, and the equilateral hexagonal buckle seat passes through the equilateral hexagonal hole of the buckle plate. The piston rod enters the buckle hole, firmly connecting the buckle seat and buckle plate, facilitating the quick assembly of the roller body.

[0018] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit the present invention. Attached Figure Description

[0019] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0020] Figure 1 This is a schematic diagram of the overall structure shown in an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the disassembled structure of the roller body shown in an embodiment of the present invention;

[0022] Figure 3 This is a schematic cross-sectional view of the buckle plate shown in an embodiment of the present invention;

[0023] Figure 4 This is a cross-sectional view of one of the angle mounting bases shown in an embodiment of the present invention;

[0024] Figure 5 This is a cross-sectional view of the mounting base from another angle, as shown in an embodiment of this utility model.

[0025] The correspondence between the labels and component names in the attached figures is as follows:

[0026] 1. Housing; 2. Mounting base; 3. Roller body; 4. Rotating shaft; 5. Snap-on seat; 6. Snap-on plate; 7. Snap-on hole; 8. Piston rod; 9. Upper extrusion rod; 10. Lower extrusion rod; 11. First synchronous rack; 12. Second synchronous rack; 13. Synchronous gear; 14. First spring; 15. Second spring; 16. Anti-slip strip; 17. First threaded rod; 18. Guide limit block; 19. Linkage slider; 20. Linkage rack; 21. Second threaded rod. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. The preferred embodiments of this utility model will now be described in more detail with reference to the accompanying drawings. Although the preferred embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this utility model more thorough and complete, and to fully convey the scope of this utility model to those skilled in the art.

[0028] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0029] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] Designing a travel suitcase with easily replaceable wheels is currently the primary technical problem that engineers need to solve.

[0031] To address the aforementioned problems, this utility model provides a travel suitcase with easily replaceable wheels. This structure utilizes a snap-fit ​​mechanism to quickly assemble the wheels, improving the efficiency of replacing travel suitcase wheels.

[0032] The technical solution of the present invention (Embodiment 1) is described in detail below with reference to the accompanying drawings.

[0033] Figure 1 This is a schematic diagram of the overall structure shown in an embodiment of the present invention; Figure 2 This is a schematic diagram of the disassembled structure of the roller body shown in an embodiment of the present invention; Figure 3 This is a schematic cross-sectional view of the buckle plate shown in an embodiment of the present invention; Figure 4 This is a cross-sectional view of one of the angle mounting bases shown in an embodiment of the present invention; Figure 5 This is a cross-sectional view of the mounting base from another angle, as shown in an embodiment of this utility model.

[0034] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 This travel suitcase with easily replaceable wheels specifically includes:

[0035] 1. Box body; 2. Assembly base; 3. Roller body; 4. Rotating shaft; 5. Snap fastener; 6. Snap fastener plate; 7. Snap fastener hole; and 8. Piston rod.

[0036] Four mounting bases 2 are symmetrically fixedly connected to the bottom of the housing 1. Roller bodies 3 are provided on both sides of the mounting base 2. Rotating shafts 4 are symmetrically installed inside the mounting base 2. The roller bodies 3 are connected to the rotating shafts 4. A buckle seat 5 is fixedly connected to the end of the rotating shaft 4 away from the mounting base 2. A buckle plate 6 is sleeved on the buckle seat 5. Six buckle holes 7 are symmetrically opened on the buckle seat 5. A piston rod 8 that passes through the buckle holes 7 is symmetrically slidably installed inside the buckle plate 6.

[0037] Specifically, the buckle seat 5 is an equilateral hexagon.

[0038] Specifically, an upper pressing rod 9 is symmetrically slidably installed inside the buckle plate 6, and a lower pressing rod 10 is symmetrically installed below the upper pressing rod 9 and slidably connected to the inside of the mounting base 2. Both the upper pressing rod 9 and the lower pressing rod 10 are fixedly connected to the piston rod 8. A first synchronous rack 11 is fixedly connected to the upper pressing rod 9 and slidably connected to the inner wall of the buckle plate 6. A second synchronous rack 12 is fixedly connected to the lower pressing rod 10 and slidably connected to the inside of the mounting base 2. A synchronous gear 13 is symmetrically rotatably connected inside the buckle plate 6, and both the first synchronous rack 11 and the second synchronous rack 12 are meshed with the synchronous gear 13.

[0039] Specifically, the inner wall of the buckle plate 6 is symmetrically and fixedly connected with a first spring 14 that is fixedly connected to the upper extrusion rod 9. Below the first spring 14, a second spring 15 that is fixedly connected to the inner wall of the buckle plate 6 is symmetrically installed. The top end of the second spring 15 is fixedly connected to the lower extrusion rod 10.

[0040] Specifically, anti-slip strips 16 are equidistantly installed on the surface of the piston rod 8.

[0041] Specifically, the assembly base 2 is symmetrically rotatably connected to a first threaded rod 17 that meshes with the inside of the rotating shaft 4. The rotating shaft 4 is symmetrically fixedly connected to a guide limiting block 18 that slides with the inner wall of the assembly base 2. One end of the first threaded rod 17 is fixedly connected to a flat gear.

[0042] Specifically, the guide limiting block 18 is T-shaped.

[0043] Specifically, a linkage slider 19 is slidably installed inside the assembly base 2. A linkage rack 20 is symmetrically fixedly connected to the linkage slider 19 and is slidably connected to the inside of the assembly base 2. The linkage rack 20 is meshed with a flat gear at one end of the first threaded rod 17. A second threaded rod 21 is rotatably connected to one side of the assembly base 2 and is meshed with the linkage slider 19. A handle is fixedly connected to one end of the second threaded rod 21.

[0044] In this embodiment, how to quickly assemble the roller body 3, combined with Figures 1 to 3 The specific implementation method is as follows: Pulling one of the piston rods 8 causes the upper extrusion rod 9 to compress the first spring 14 and retract it. The first synchronous rack 11 drives the synchronous gear 13 to rotate, and the second synchronous rack 12 controls the lower extrusion rod 10 to move downward. The lower extrusion rod 10 compresses the second spring 15 and retracts it. The piston rod 8 moves out of the buckle hole 7, making it easy to separate the buckle seat 5 and the buckle plate 6. The roller body 3 is then removed for replacement. The buckle plate 6 is brought close to the buckle seat 5. The equilateral hexagonal buckle seat 5 passes through the equilateral hexagonal hole of the buckle plate 6, allowing the buckle plate 6 to be installed from six positions. The first spring 14 and the second spring 15 are reset, causing the piston rod 8 to retract into the buckle plate 6. The piston rod 8 then enters the buckle hole 7, firmly connecting the buckle seat 5 and the buckle plate 6. By pulling one of the piston rods 8, the roller body 3 can be quickly assembled.

[0045] In this embodiment, how to improve the friction on the surface of the piston rod 8, combined with... Figure 3 The specific implementation method is as follows: At the same time, the anti-slip strip 16 can improve the surface friction of the piston rod 8, making it easier to lift.

[0046] In this embodiment, how to adapt to roller bodies 3 of different thicknesses, combined with Figure 4 and Figure 5 The specific implementation method is as follows: the linkage rack 20 moves to the left, controlling the first threaded rod 17 to rotate inside the rotating shaft 4, driving the rotating shaft 4 to be retracted into the assembly seat 2, and the guide limit block 18 slides along the inner wall of the assembly seat 2 to facilitate the assembly of the roller body 3 with a smaller thickness. The linkage rack 20 moves to the right, driving the rotating shaft 4 to move out of the assembly seat 2, and the guide limit block 18 slides along the inner wall of the assembly seat 2 and is limited, facilitating the assembly of the roller body 3 with a larger thickness.

[0047] In this embodiment, how to control the left and right movement of the linkage rack 20, combined with... Figure 5 The specific implementation method is as follows: rotate the handle of the second threaded rod 21, the second threaded rod 21 controls the connecting slider 19 to move to the left, the connecting slider 19 drives the connecting rack 20 to move to the left, and rotate the second threaded rod 21 in the opposite direction, driving the connecting slider 19 to move to the right.

[0048] The present invention has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to the present invention. Furthermore, it is understood that the steps in the method of the present invention embodiments can be adjusted, combined, and deleted according to actual needs, and the structure in the device of the present invention embodiments can be combined, divided, and deleted according to actual needs.

[0049] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A travel suitcase with easily replaceable wheels, characterized in that, include: Box body (1), mounting base (2), roller body (3), rotating shaft (4), buckle seat (5), buckle plate (6), buckle hole (7) and piston rod (8); The bottom of the box (1) is symmetrically fixedly connected to an assembly base (2). Roller bodies (3) are provided on both sides of the assembly base (2). Rotating shafts (4) are symmetrically installed inside the assembly base (2). The roller bodies (3) are connected to the rotating shafts (4). A buckle seat (5) is fixedly connected to one end of the rotating shaft (4) away from the assembly base (2). A buckle plate (6) is sleeved on the buckle seat (5). Buckle holes (7) are symmetrically opened on the buckle seat (5). A piston rod (8) that is connected to the buckle hole (7) is symmetrically slidably installed inside the buckle plate (6).

2. A travel suitcase with easily replaceable wheels according to claim 1, characterized in that: The buckle seat (5) is an equilateral hexagon.

3. A travel suitcase with easily replaceable wheels according to claim 1, characterized in that: The buckle plate (6) is symmetrically and slidably installed with an upper extrusion rod (9). Below the upper extrusion rod (9), a lower extrusion rod (10) is symmetrically installed and slidably connected to the inside of the mounting base (2). The upper extrusion rod (9) and the lower extrusion rod (10) are both fixedly connected to the piston rod (8). A first synchronous rack (11) is fixedly connected to the upper extrusion rod (9) and slidably connected to the inner wall of the buckle plate (6). A second synchronous rack (12) is fixedly connected to the lower extrusion rod (10) and slidably connected to the inside of the mounting base (2). A synchronous gear (13) is symmetrically and rotatably connected inside the buckle plate (6). The first synchronous rack (11) and the second synchronous rack (12) are both meshed with the synchronous gear (13).

4. A travel suitcase with easily replaceable wheels according to claim 3, characterized in that: The inner wall of the buckle plate (6) is symmetrically fixedly connected to a first spring (14) which is fixedly connected to the upper extrusion rod (9). Below the first spring (14), a second spring (15) is symmetrically installed and fixedly connected to the inner wall of the buckle plate (6). The top end of the second spring (15) is fixedly connected to the lower extrusion rod (10).

5. A travel suitcase with easily replaceable wheels according to claim 3, characterized in that: Anti-slip strips (16) are equidistantly installed on the surface of the piston rod (8).

6. A travel suitcase with easily replaceable wheels according to claim 1, characterized in that: The assembly base (2) is symmetrically rotatably connected to a first threaded rod (17) that meshes with the inside of the rotating shaft (4), and the rotating shaft (4) is symmetrically fixedly connected to a guide limiting block (18) that slides with the inner wall of the assembly base (2).

7. A travel suitcase with easily replaceable wheels according to claim 6, characterized in that: The guide limit block (18) is T-shaped.

8. A travel suitcase with easily replaceable wheels according to claim 7, characterized in that: The assembly base (2) has a sliding block (19) inside, and a sliding rack (20) is symmetrically fixedly connected to the sliding block (19) and is slidably connected to the sliding rack (20) inside the assembly base (2). A second threaded rod (21) is rotatably connected to one side of the assembly base (2) and meshes with the sliding block (19).

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