A wheel set suitable for a luggage case

Abstract

The application belongs to the technical field of luggage accessory structure, and particularly relates to a wheel set suitable for a luggage case, which comprises a rolling wheel, a mounting structure for mounting the rolling wheel, and a mounting seat for mounting at the bottom of an external luggage case, the mounting structure and the mounting seat are detachably mounted through a connecting column and a connecting structure, a damping spring is arranged in the mounting structure and is inclined relative to a horizontal line where the center of the rolling wheel is located, the connecting column is provided with a clamping groove which is arranged in a circumferential direction around the center of the connecting column, the connecting structure comprises a connecting plate which is arranged in matching with the mounting seat, a connecting groove formed on the surface of the connecting plate, and a moving assembly for the second limiting plate which is sequentially arranged from top to bottom in the connecting groove and comprises a first limiting plate and a second limiting plate which are arranged in correspondence with the connecting column and the clamping groove respectively.

Description

Technical Field

[0001] This application belongs to the technical field of luggage accessory structures, specifically relating to a wheel set suitable for suitcases. Background Technology

[0002] Early suitcases were made of wood or other heavy materials. With the popularization of air travel, suitcases tended to be made of lighter hard plastic or cloth. Most models also come with built-in wheels and can be easily pulled with a handle. After 2010, suitcases with four wheels also appeared, which can not only rotate 360 ​​degrees, but also can be easily pushed on flat ground.

[0003] Suitcase wheels, constantly in contact with the bottom surface and rolling, are prone to wear and tear, requiring replacement. Existing detachable wheel sets, such as the patented detachable suitcase caster, include a base (application number: CN202321042606.2), a caster assembly, and a locking assembly. The base includes a base body, a receiving cavity, a button limiting assembly, a button through hole, a spring limiting baffle, and a plug-in mounting through hole. The limiting assembly includes a threaded tube, a screw, and a washer. The caster assembly includes a caster frame, a pulley, a pulley locking assembly, and a caster connecting seat. The caster connecting seat includes a connecting seat body, a snap-fit ​​component, and a snap-fit ​​groove unit. The locking assembly includes a sliding snap-fit ​​component and a spring. The sliding snap-fit ​​component includes a drive rod, a limiting snap-fit ​​component, a spring receiving groove, and a mounting through hole. When the locking assembly is installed on the base, the threaded tube is inserted into the mounting through hole, the screw is screwed onto the threaded tube, and the washer abuts against one side of the sliding snap-fit ​​component. The detachable suitcase caster has a simple structure, is easy to disassemble and maintain, and enables flexible use of the caster. Although the above components can solve the disassembly problem, they are controlled by only a single part, which is prone to accidental activation. Moreover, most existing detachable wheel sets do not have shock absorption devices. There is an urgent need for a solution to the above problems. Utility Model Content

[0004] The purpose of this application is to address the shortcomings of existing technologies by providing a wheel set suitable for suitcases. In practical applications, the moving components can reduce accidental contact to a certain extent, and the tilted shock-absorbing springs can provide shock absorption.

[0005] To achieve the above objectives, this application adopts the following technical solution: A wheel set suitable for suitcases includes rollers, a mounting structure for mounting the rollers, and a mounting base for mounting on the bottom of an external suitcase. The mounting structure and the mounting base are detachably mounted via a connecting post and a connecting structure. The mounting structure contains a shock-absorbing spring inclined relative to the horizontal line where the center of the roller is located. The connecting post has a snap-fit ​​groove circumferentially arranged around its center. The connecting structure includes a connecting plate that matches the mounting base, a connecting groove formed on the surface of the connecting plate, and a first limiting plate, a second limiting plate, and a moving component for moving the second limiting plate, arranged sequentially from top to bottom within the connecting groove. The first limiting plate and the second limiting plate are respectively provided with a first limiting hole adapted to the connecting post and a second limiting hole adapted to the snap-fit ​​groove. The second limiting hole includes a third limiting hole and a fourth limiting hole that are connected. The structure of the third limiting hole is the same as that of the first limiting hole to allow the connecting post to pass smoothly through. The diameter of the fourth limiting hole is smaller than that of the first limiting hole and matches the snap-fit ​​groove to fix the connecting post.

[0006] As an improvement to the wheel set for suitcases described in this application, the moving assembly includes a moving block and a moving push button arranged sequentially from top to bottom. The second limiting plate is fixedly connected to the moving block. The moving block includes a block body connected to each other and a limiting block located below the block body. The moving push button includes a moving body connected to each other and a push block located below the moving body. The block body and the moving body are assembled perpendicularly to each other and each is provided with a limiting spring with one end connected to it and the other end abutting against the connecting groove.

[0007] As an improvement to the wheel set for suitcases described in this application, the limiting block includes a limiting body and a moving body connected to each other. The length of the end of the limiting body near the moving body is less than the length of the end away from the moving body to form a pointed structure. The moving body is provided with a limiting groove that matches the pointed structure.

[0008] As an improvement to the wheel set for suitcases described in this application, the cross-sectional shape of both the tip structure and the limiting groove is set as an isosceles trapezoid.

[0009] As an improvement to the wheel set for suitcases described in this application, the side of the block body away from the movable push button is provided with a mounting groove, the corresponding limiting spring portion is located in the mounting groove and abuts against an inner end face of the other end of the mounting groove away from the corresponding limiting spring, and the side of the block body in contact with the connecting groove is provided with an anti-slip protrusion.

[0010] As an improvement to the wheel set for suitcases described in this application, the moving body has a protruding post at the end away from the push block, and the corresponding limiting spring portion is sleeved on the protruding post.

[0011] As an improvement to the wheel set for suitcases described in this application, the connecting plate has a push-pull opening on the side near the roller, and the push block is partially exposed relative to the connecting plate through the push-pull opening.

[0012] As an improvement to the wheel set for suitcases described in this application, one end of the connecting post is provided in the first mounting hole of the mounting structure, and the other end of the connecting post is provided in the second mounting hole of the mounting base.

[0013] As an improvement to the wheel set for suitcases described in this application, the mounting structure includes a mounting body and a shock-absorbing support located in a mounting space opened in the mounting body. The first mounting hole is located in the mounting body. The shock-absorbing support has a mounting hole for mounting the roller axle and a protrusion extending towards the top of the mounting space. The protrusion is fitted with the shock-absorbing spring. The other end of the shock-absorbing spring abuts against the top of the mounting space. The mounting space, the support, and the shock-absorbing spring are all inclined relative to the horizontal line where the center of the roller is located.

[0014] The beneficial effects of this application are as follows: In actual use, the shock-absorbing spring in its mounting structure has better shock absorption function because it is tilted relative to the center of the roller; the position of the moving component can be changed by the human body, thereby changing the correspondence between the second limiting hole in the second limiting plate and the first limiting hole in the first limiting plate, thereby changing the detachable relationship between the connecting column and the mounting base, which is convenient and practical. Moreover, the relatively complex structure of the moving component can prevent accidental contact and allow the roller to pop out quickly, giving the user more reaction time when replacing the roller. Attached Figure Description

[0015] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0016] Figure 1 This is one of the structural schematic diagrams of an embodiment of this application.

[0017] Figure 2 This is a second structural schematic diagram of an embodiment of this application (without a mounting base).

[0018] Figure 3 This is a schematic diagram of the connection structure in the embodiment of this application (without the first limiting plate).

[0019] Figure 4This is a diagram showing the positional relationship between the movable block and the movable push button in the embodiments of this application.

[0020] Figure 5 This is a diagram showing the positional relationship between the installation structure and the connecting column in the embodiments of this application.

[0021] The reference numerals in the attached figures are explained as follows: 1. Rollers; 2. Installation structure; 21. Vibration damping spring; 22. Mounting body; 23. Installation space; 24. Vibration damping support; 241. Mounting hole; 242. Protrusion; 3. Mounting bracket; 4. Connecting post; 41. Snap-fit ​​groove; 5. Connecting structure; 51. Connecting plate; 52. Connecting groove; 53. First limiting plate; 531. First limiting hole; 54. Second limiting plate; 541. Second limiting hole; 542. Third limiting hole; 543. Fourth limiting hole; 55. Moving component; 551. Moving block; 552. Moving push button; 553. Block body; 554. Limiting block; 555. Moving body; 556. Push block; 557. Limiting spring; 558. Limiting body; 559. Moving body; 560. Limiting groove; 561. Mounting groove; 562. Protruding column; 563. Anti-slip protrusion; 56. Push-pull opening. Detailed Implementation

[0022] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "including but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error. Furthermore, terms such as "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0024] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] The following is in conjunction with the appendix Figures 1-5 The present application will be further described in detail with reference to specific implementation methods, but this is not intended to limit the present application.

[0026] Implementation A wheel set suitable for suitcases includes a roller 1, a mounting structure 2 for mounting the roller 1, and a mounting base 3 for mounting on the bottom of an external suitcase. The mounting structure 2 and the mounting base 3 are detachably mounted via a connecting post 4 and a connecting structure 5. One end of the connecting post 4 is located at a first mounting hole in the mounting structure 2, and the other end of the connecting post 4 is located at a second mounting hole in the mounting base 3. It can be understood that both the first and second mounting holes are mounting hole structures adapted to the shape of the connecting post 4, which increases the connection strength.

[0027] Specifically, the mounting structure 2 includes a mounting body 22 and a shock-absorbing support 24 located in the mounting space 23 opened in the mounting body 22. The first assembly hole is located in the mounting body 22. The shock-absorbing support 24 has a mounting hole 241 for mounting the shaft of the roller 1 and a protrusion 242 extending to the top of the mounting space 23. The protrusion 242 is fitted with a shock-absorbing spring 21. The other end of the shock-absorbing spring 21 abuts against the top of the mounting space 23. The mounting space 23, the support and the shock-absorbing spring 21 are all inclined relative to the horizontal line where the center of the roller 1 is located.

[0028] In this embodiment, the angle of inclination between the straight line containing the central axis of the shock-absorbing spring 21 and the straight line containing the center of the mounting hole 241 of the mounting roller 1 is 15° to 30°. The above-mentioned inclination angle setting can ensure the shock-absorbing effect of the shock-absorbing spring 21 without affecting the normal installation and use of the roller 1. Moreover, its structure is simple and its production cost is low.

[0029] Specifically, the connecting post 4 is provided with a snap-fit ​​groove 41 arranged circumferentially around the center of the connecting post 4. The connecting structure 5 includes a connecting plate 51 matched with the mounting base 3, a connecting groove 52 formed on the surface of the connecting plate 51, and a first limiting plate 53, a second limiting plate 54, and a moving component 55 arranged sequentially from top to bottom in the connecting groove 52 for moving the second limiting plate 54. The first limiting plate 53 and the second limiting plate 54 are respectively provided with a first limiting hole 531 adapted to the connecting post 4 and a second limiting hole 541 adapted to the snap-fit ​​groove 41. The second limiting hole 541 includes a third limiting hole 542 and a fourth limiting hole 543 that are connected. The structure of the third limiting hole 542 is the same as that of the first limiting hole 531 to allow the connecting post 4 to pass smoothly. The diameter of the fourth limiting hole 543 is smaller than that of the first limiting hole 531 and is matched with the snap-fit ​​groove 41 to fix the connecting post 4.

[0030] Specifically, the moving component 55 includes a moving block 551 and a moving push button 552 arranged sequentially from top to bottom. The second limiting plate 54 is fixedly connected to the moving block 551. The moving block 551 includes a block body 553 connected to each other and a limiting block 554 located below the block body 553. The moving push button 552 includes a moving body 555 connected to each other and a push block 556 located below the moving body 555. The block body 553 and the moving body 555 are assembled perpendicularly to each other and each is provided with a limiting spring 557 with one end connected to it and the other end abutting against the connecting groove 52.

[0031] Specifically, the limiting block 554 includes a limiting body 558 and a moving body 559 connected to each other. The length of the end of the limiting body 558 near the moving body 555 is less than the length of the end away from the moving body 555 to form a tip structure. The moving body 555 is provided with a limiting groove 560 that matches the tip structure.

[0032] In this embodiment, the cross-sectional shape of both the tip structure and the limiting groove 560 is set to an isosceles trapezoid, which can achieve better limiting effect and prevent the roller 1 from popping out directly when it is replaced. It is understood that it can also be replaced with other structures with a semi-elliptical cross-sectional shape that have the same function as the above setting.

[0033] Specifically, the movable body 555 has a protruding post 562 at the end away from the push block 556, and a corresponding limiting spring 557 is sleeved on the protruding post 562. The block body 553 has a mounting groove 561 on the side away from the movable push button 552, and the corresponding limiting spring 557 is located in the mounting groove 561 and abuts against an inner end face of the other end of the mounting groove 561 away from the corresponding limiting spring 557. The side of the block body 553 that contacts the connecting groove 52 has an anti-slip protrusion 563. The anti-slip protrusion 563 can increase the frictional resistance of the block body 553 movement, further prevent accidental touch and provide the user with a tactile feel for pushing the push block 556.

[0034] Specifically, the connecting plate 51 has a push-pull opening 56 on the side near the roller 1, and the push block 556 passes through the push-pull opening 56 and is partially exposed relative to the connecting plate 51, making it convenient for the user to use.

[0035] In this embodiment, to replace roller 1, the user needs to push the push block 556. The push block 556 moves the moving body 555, thereby changing the positional relationship between the limiting groove 560 and the limiting body 558. This causes the moving block 551 to retract, displacing the second limiting plate 54 and compressing the limiting spring 557 corresponding to the moving block 551. Consequently, the second limiting hole 541 is displaced, and the third limiting hole 542 is aligned with the first limiting hole 531. At this time, the connecting post 4 can be detached from the mounting base 3 and the connecting structure 5. After replacing the new component, the push block 556 is returned to its original position, thus changing the position of the roller 1. The positional relationship between the limiting groove 560 and the limiting body 558, the limiting spring 557 corresponding to the moving block 551 does work, so that the moving block 551 returns to its original position, and the second limiting plate 54 also returns to its original position, driving the second limiting hole 541 to move. The fourth limiting hole 543 and the first limiting hole 531 are aligned and set, and the fourth limiting hole 543 locks the locking groove 41. The connecting column 4 is fixedly connected to the mounting base 3 and the connecting structure 5. This embodiment can avoid the problem of the roller 1 being easily accidentally touched or the user having too little reaction time when the roller 1 is replaced due to the single setting of the fixed structure by setting the moving component 55.

[0036] Furthermore, all content not described in detail in this specification is prior art known to those skilled in the art. Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this application is not limited to the specific embodiments described above, and any obvious improvements, substitutions, or modifications made by those skilled in the art based on this application are within the scope of protection of this application. In addition, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this application.

Claims

1. A wheel set suitable for use in a luggage case, characterized in that, The package includes a roller (1), a mounting structure (2) for mounting the roller (1), and a mounting base (3) for mounting on the bottom of an external bag. The mounting structure (2) and the mounting base (3) are detachably mounted via a connecting post (4) and a connecting structure (5). The mounting structure (2) is provided with a shock-absorbing spring (21) inclined relative to the horizontal line where the center of the roller (1) is located. The connecting post (4) is provided with a snap-fit ​​groove (41) arranged circumferentially around the center of the connecting post (4). The connecting structure (5) includes a connecting plate (51) matched with the mounting base (3), a connecting groove (52) formed on the surface of the connecting plate (51), and a first limiting plate (53), a second limiting plate (54), and a third limiting plate (555), arranged sequentially from top to bottom within the connecting groove (52). Two limiting plates (54) and a moving component (55) for moving the second limiting plate (54). The first limiting plate (53) and the second limiting plate (54) are respectively provided with a first limiting hole (531) adapted to the connecting post (4) and a second limiting hole (541) adapted to the snap-fit ​​groove (41). The second limiting hole (541) includes a third limiting hole (542) and a fourth limiting hole (543) that are connected. The structure of the third limiting hole (542) is the same as that of the first limiting hole (531) to allow the connecting post (4) to pass through smoothly. The diameter of the fourth limiting hole (543) is smaller than that of the first limiting hole (531) and is matched with the snap-fit ​​groove (41) to fix the connecting post (4).

2. The wheel set for suitcases as described in claim 1, characterized in that, The moving component (55) includes a moving block (551) and a moving push button (552) arranged sequentially from top to bottom. The second limiting plate (54) is fixedly connected to the moving block (551). The moving block (551) includes a block body (553) connected to each other and a limiting block (554) located below the block body (553). The moving push button (552) includes a moving body (555) connected to each other and a push block (556) located below the moving body (555). The block body (553) and the moving body (555) are assembled perpendicularly to each other and each is provided with a limiting spring (557) with one end connected to it and the other end abutting against the connecting groove (52).

3. The wheel set for suitcases as described in claim 2, characterized in that, The limiting block (554) includes a limiting body (558) and a moving body (559) connected to each other. The length of the limiting body (558) near the moving body (555) is less than the length of the end away from the moving body (555) to form a tip structure. The moving body (555) is provided with a limiting groove (560) that matches the tip structure.

4. The wheel set for suitcases as described in claim 3, characterized in that, The cross-sectional shape of both the tip structure and the limiting groove (560) is set as an isosceles trapezoid.

5. The wheel set for suitcases as described in claim 3, characterized in that, The block body (553) has a mounting groove (561) on the side away from the movable push button (552). The corresponding limiting spring (557) is located in the mounting groove (561) and abuts against an inner end face of the mounting groove (561) away from the corresponding limiting spring (557). The side of the block body (553) that contacts the connecting groove (52) has an anti-slip protrusion (563).

6. The wheel set for a suitcase as described in claim 3, characterized in that, The movable body (555) has a protruding column (562) at one end away from the push block (556), and the corresponding limiting spring (557) is partially sleeved on the protruding column (562).

7. The wheel set for a suitcase as described in claim 2, characterized in that, The connecting plate (51) has a push-pull opening (56) on the side near the roller (1), and the push block (556) passes through the push-pull opening (56) and is partially exposed relative to the connecting plate (51).

8. The wheel set for a suitcase as described in claim 1, characterized in that, One end of the connecting column (4) is located at the first assembly hole of the mounting structure (2), and the other end of the connecting column (4) is located at the second assembly hole of the mounting base (3).

9. The wheel set for a suitcase as described in claim 8, characterized in that, The mounting structure (2) includes a mounting body (22) and a shock-absorbing support (24) located in the mounting space (23) opened in the mounting body (22). The first assembly hole is located in the mounting body (22). The shock-absorbing support (24) has a mounting hole (241) for mounting the shaft of the roller (1) and a protrusion (242) extending to the top of the mounting space (23). The protrusion (242) is fitted with the shock-absorbing spring (21). The other end of the shock-absorbing spring (21) abuts against the top of the mounting space (23). The mounting space (23), the support and the shock-absorbing spring (21) are all inclined relative to the horizontal line where the center of the roller (1) is located.

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