Five-roller luggage case

Abstract

The present invention relates to the field of luggage cases. Disclosed is a five-roller luggage case. The technical solution of the present invention comprises a luggage case body, wherein several rollers are provided at the bottom of the luggage case body by means of detachable structures, and the rollers comprise regular rollers and spare rollers. The spare rollers can normally play a role in bearing a load, and therefore the overall carrying capacity of the luggage case is improved; and each roller can bear less weight, and therefore the service life of the rollers can be prolonged. When a certain regular roller is damaged, the spare roller can be disassembled for replacement, which can ensure that the luggage case can still be normally pushed for use.

Description

A five-wheeled suitcase Technical Field

[0001] This invention relates to the field of luggage, and in particular to a five-wheeled luggage. Background Technology

[0002] When traditional four-wheeled suitcases are subjected to rough handling, accidental impacts, or long-term wear and tear that causes wheel malfunctions, such as damage or detachment of one wheel, the entire suitcase will lose its balance and become unable to stand upright or be pushed smoothly. Such situations will seriously affect the user's travel and usage experience. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a five-wheeled suitcase. The spare wheel serves as a load-bearing component during normal use, increasing the overall carrying capacity of the suitcase. Furthermore, each wheel bears a smaller weight, extending the lifespan of the wheels. If a commonly used wheel fails, the spare wheel can be removed and replaced, ensuring the suitcase can still be pushed and used normally.

[0004] The technical solution adopted by the present invention to solve its technical problem is: a five-wheeled suitcase, including a suitcase body, the bottom of the suitcase body is provided with a plurality of roller assemblies with a detachable structure, each roller assembly can be replaced with the other through the detachable structure, and the roller assembly includes a commonly used wheel and a spare wheel.

[0005] This design features a detachable structure with primary and spare wheels, with the spare wheel installed in the primary wheel's position. Under normal circumstances, the spare wheel functions the same as the primary wheel, bearing weight. By utilizing the spare wheel's weight, the overall carrying capacity of the suitcase is increased, and the weight distributed across each wheel is reduced, extending the wheel's lifespan. If a primary wheel fails, the spare wheel can be removed and installed in its place, ensuring the suitcase can still be pushed and used normally.

[0006] Preferably, the commonly used wheels are distributed around the spare wheels. Since the main load-bearing wheel is not the spare wheel under normal circumstances, it is placed in the middle to maintain an aesthetically pleasing appearance while ensuring that it can be easily replaced if other wheels are damaged.

[0007] Preferably, the commonly used wheels include four roller assemblies distributed at the four bottom corners or edges of the suitcase body, providing a more even distribution of load-bearing capacity.

[0008] Preferably, at least one spare wheel is included, and the spare wheel is located in the central area of ​​the bottom of the suitcase body. This ensures that it can provide auxiliary load-bearing capacity and can be replaced if the other wheels are damaged.

[0009] Preferably, the roller assembly includes a wheel seat, a wheel bracket, and a wheel body. The wheel seat is fixed to the suitcase body by multiple screws, and each wheel seat is riveted with a fixing post. The upper end of the wheel bracket is integrally injection molded with a fixing hole. The wheel body is connected to the fixing post by a buckle to form a detachable structure.

[0010] The roller can be quickly installed by inserting the fixing post into the fixing hole and then fixing it with a clip.

[0011] Preferably, the lower periphery of the fixing post is provided with an annular neck section. It is fixed in place by means of a snap fastener that fits into the annular neck section.

[0012] Preferably, a side window is provided on the side wall of the fixing hole corresponding to the annular neck section, and the buckle is provided on the outside of the side window. The buckle includes a control component, a limiting pin and a spring.

[0013] The front end of the control component is fixed with the limiting pin. A spring is provided between the control component and the wheel bracket. The spring pushes the control component to move so that the side wall of the limiting pin moves away from the side window. The upper surface of the wheel bracket is provided with a slot and a rear locking platform. The lower side of the control component is provided with a protrusion that is interference-fitted with the slot. The rear side of the control component is provided with a tail groove that is interference-fitted with the rear locking platform.

[0014] The spring provides the power to move the limiting pin away from the side window. The slot and protrusion at the front form a set of interference fit limiting and retaining structures, while the rear slot and tail slot at the rear form another set of interference fit limiting and retaining structures. The two sets of latches achieve double interference fit to limit the control component, so that the limiting pin is close to the side window, thus completing the limiting of the annular tapering section on the fixed column by the limiting pin. The double interference limit makes the limiting more stable and secure.

[0015] Operate the control components to move the card slot and rear card platform away from the protrusion and tail groove respectively. Under the push of the spring, the limit pin moves away from the side window (separating from the annular neck section), at which point the limitation of the fixing post in the fixing hole can be released.

[0016] Preferably, the front end of the control component is provided with connecting sections from both sides of the outer column forward. The two ends of the limiting pin are fixed to the ends of the connecting sections. The two ends of the spring abut against the outer column and the control component respectively. The outer column and the control component are each provided with guide posts that cooperate with the spring. The limiting pin on the control component restricts or unlocks the annular retractable neck section at the lower end of the fixed column through a side window; thereby realizing the fixing and disassembly of the roller. Using connecting sections fixed to the limiting pins from both sides of the outer column forward improves the stability of the control component and the limiting pins relative to the wheel seat.

[0017] The beneficial effects of this invention are:

[0018] The spare wheel serves as a load-bearing element, increasing the overall carrying capacity of the suitcase. Furthermore, the weight distributed among each wheel is smaller, extending their lifespan. If a commonly used wheel fails, the spare wheel can be removed and replaced, ensuring the suitcase can still be pushed and used normally. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only five of the drawings in this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 is a perspective view of an embodiment of the present invention;

[0021] Figure 2 is a schematic diagram of the rollers after they are separated from the suitcase body according to an embodiment of the present invention;

[0022] Figure 3 is one of the exploded views of the rollers and the suitcase body according to an embodiment of the present invention;

[0023] Figure 4 is a second exploded view of the rollers and the suitcase body according to an embodiment of the present invention;

[0024] Figure 5 is the third exploded view of the rollers and the suitcase body according to an embodiment of the present invention;

[0025] The components include: 1. Suitcase body; 2. Standard wheels; 3. Spare wheels; 4. Fixing post; 5. Wheel bracket; 6. Wheel body; 7. Annular neck section; 8. Side window; 9. Control components; 10. Limit pin; 11. Spring; 12. Connecting section; 13. Outer post; 14. Fixing hole; 15. Slot; 16. Rear locking platform; 17. Protrusion; 18. Tail groove; 19. Wheel seat. Detailed Implementation

[0026] To enhance understanding of the present invention, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. These embodiments are only used to explain the invention and do not limit the scope of protection of the invention.

[0027] Example

[0028] As shown in Figure 1, a five-wheeled suitcase includes a suitcase body 1. The bottom of the suitcase body 1 is provided with a number of roller assemblies with a detachable structure. Each roller assembly can be replaced with the other through the detachable structure. The roller assembly includes a commonly used wheel 2 and a spare wheel 3.

[0029] This design employs a detachable structure with a primary wheel (2) and a spare wheel (3). The spare wheel (3) can be installed in the position of the primary wheel (2). Normally, the spare wheel (3) functions the same as the primary wheel (2), bearing weight. By using the spare wheel (3) to support the weight, the overall carrying capacity of the suitcase is increased, and the weight distributed among each wheel is reduced, extending the lifespan of the wheels. If a primary wheel (2) is damaged, the spare wheel (3) can be removed and installed in the damaged wheel's position, ensuring the suitcase can still be pushed and used normally.

[0030] The commonly used wheels 2 are distributed around the spare wheels 3. Since the spare wheels 3 are not the main load-bearing wheels under normal circumstances, they are placed in the middle to maintain an aesthetically pleasing appearance while ensuring that they can be easily replaced if other wheels are damaged.

[0031] The commonly used wheels 2 include four roller assemblies distributed at the four corners or edges of the bottom of the suitcase body 1. This provides a more even distribution of load-bearing capacity.

[0032] At least one spare wheel 3 is included, and the spare wheel 3 is located in the bottom center area of ​​the luggage body 1. This ensures it can provide auxiliary load-bearing capacity and can be replaced if the other wheels are damaged.

[0033] The roller assembly includes a wheel seat 19, a wheel bracket 5, and a wheel body 6. The wheel seat 19 is fixed to the luggage body 1 by multiple screws, and a fixing post 4 is riveted to each wheel seat 19. The upper end of the wheel bracket 5 is integrally injection molded with a fixing hole 14. The wheel body 6 forms a detachable structure with the fixing post 4 by a buckle.

[0034] The roller can be quickly installed by inserting the fixing post 4 into the fixing hole 14 and then fixing it with a clip.

[0035] The lower periphery of the fixing post 4 is provided with an annular neck section 7. It is fixed by means of a buckle that fits into the annular neck section 7.

[0036] The side wall of the fixing hole 14 is provided with a side window 8 corresponding to the annular neck section 7. The buckle is provided on the outside of the side window 8. The buckle includes a control component 9, a limit pin 10 and a spring 11.

[0037] The front end of the control component 9 is fixed with the limiting pin 10. A spring 11 is provided between the control component 9 and the wheel bracket 5. The spring 11 pushes the control component 9 to move so that the side wall of the limiting pin 10 moves away from the side window 8. The upper surface of the wheel bracket 5 is provided with a slot 15 and a rear locking platform 16. The lower side of the control component 9 is provided with a protrusion 17 that is interference-fitted with the slot 15. The rear side of the control component 9 is provided with a tail groove 18 that is interference-fitted with the rear locking platform 16.

[0038] Spring 11 provides the power to move the limiting pin 10 away from the side window 8. The slot 15 and the protrusion 17 form a set of interference fit limiting and retaining structures in front, and the rear slot 16 and the tail slot 18 form another set of interference fit limiting and retaining structures in the rear. The two sets of latches achieve double interference fit, limiting the control component 9 so that the limiting pin 10 is close to the side window 8, that is, the limiting pin 10 is used to limit the annular tapering section on the fixed column 4. The double interference limit makes the limit more stable and firm.

[0039] Operate the control unit 9 to make the card slot 15 and the rear card platform 16 separate from the protrusion 17 and the tail groove 18 respectively. Under the push of the spring 11, the limit pin 10 moves away from the side window 8 (separates from the annular neck section 7). At this time, the limitation of the fixing post 4 in the fixing hole 14 can be released.

[0040] The front end of the control component 9 is provided with connecting sections 12 on both sides of the outer column 13. The two ends of the limiting pin 10 are fixed to the ends of the connecting sections 12. The two ends of the spring 11 abut against the outer column 13 and the control component 9 respectively. The outer column 13 and the control component 9 are respectively provided with guide posts that cooperate with the spring 11. The limiting pin 10 on the control component 9 restricts or unlocks the annular retractable neck section at the lower end of the fixed column 4 through the side window 8, thereby realizing the fixing and disassembly of the roller. By using connecting sections 12 to be fixed to the limiting pin 10 from both sides of the outer column 13, the stability of the control component 9 and the limiting pin 10 relative to the wheel seat 19 can be improved.

[0041] The fixing hole 14, outer column 13, guide column and other structures on the wheel bracket 5 are all integrally injection molded.

[0042] The beneficial effects of this invention are:

[0043] The spare wheel 3 normally serves to bear weight, increasing the overall carrying capacity of the suitcase. Furthermore, each wheel bears a smaller weight, extending its lifespan. If a commonly used wheel 2 fails, the spare wheel 3 can be removed and replaced, ensuring the suitcase can still be pushed and used normally. The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as these combinations of technical features are not contradictory, they should be considered within the scope of this specification.

[0044] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A five-wheeled suitcase, comprising a suitcase body (1), characterized in that, The bottom of the suitcase body (1) is provided with a detachable structure for several roller assemblies. Each roller assembly can be replaced by the detachable structure. The roller assembly includes a common wheel (2) and a spare wheel (3).

2. The five-wheel luggage case of claim 1, wherein: The commonly used wheels (2) are distributed around the spare wheels (3).

3. A five-wheeled luggage case according to claim 2, wherein: The common wheels (2) include four roller assemblies distributed at the four bottom corners or each bottom edge of the suitcase body (1).

4. A five-wheeled luggage case according to claim 3, wherein: The spare wheel (3) includes at least one, and the spare wheel (3) is located in the bottom middle area of ​​the suitcase body (1).

5. The five-wheel luggage case of claim 1, wherein: The roller assembly includes a wheel seat (19), a wheel bracket (5), and a wheel body (6). The wheel seat (19) is fixed to the suitcase body (1) by multiple screws, and a fixing post (4) is riveted to each wheel seat (19). The upper end of the wheel bracket (5) is integrally molded with a fixing hole (14). The wheel body (6) is connected to the fixing post (4) by a buckle to form a detachable structure.

6. A five-wheel luggage case according to claim 5, characterized in that: The lower periphery of the fixed column (4) is provided with an annular neck section (7).

7. A five-wheel luggage case according to claim 6, characterized in that: The side wall of the fixing hole (14) is provided with a side window (8) corresponding to the annular neck section (7), and the buckle is provided on the outside of the side window (8). The buckle includes a control element (9), a limiting pin (10) and a spring (11). The front end of the control component (9) is fixed with the limiting pin (10). A spring (11) is provided between the control component (9) and the wheel bracket (5). The spring (11) pushes the control component (9) to move so that the side wall of the limiting pin (10) moves away from the side window (8). The upper surface of the wheel bracket (5) is provided with a slot (15) and a rear locking platform (16). The lower side of the control component (9) is provided with a protrusion (17) that is interference-fitted with the slot (15). The rear side of the control component (9) is provided with a tail groove (18) that is interference-fitted with the rear locking platform (16).

8. A five-wheel luggage case according to claim 7, characterized in that: The front end of the control component (9) is provided with connecting sections (12) on both sides of the outer column (13). The two ends of the limiting pin (10) are fixed to the ends of the connecting sections (12). The two ends of the spring (11) abut against the outer column (13) and the control component (9) respectively. The outer column (13) and the control component (9) are respectively provided with guide posts that cooperate with the spring (11). The limiting pin (10) on the control component (9) restricts or unlocks the annular retractable neck section at the lower end of the fixing column (4) through the side window (8); thereby realizing the fixing and disassembly of the roller.

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