Detachable luggage case wheel assembly

Abstract

A detachable luggage case wheel assembly comprises a wheel frame and a roller which correspond to each other and are detachably and fixedly connected, the roller is correspondingly connected with a luggage case body through the wheel frame, the wheel frame comprises a seat plate installed corresponding to a luggage case, the seat plate is provided with a component cavity, the side wall of the component cavity is fixed to the upper surface of the seat plate, and a control assembly is arranged in the component cavity. The bottom face in the component cavity is provided with a vertically-through control hole and a polygonal mounting hole, a control button corresponding to the control assembly is arranged in the control hole, the control assembly slides front and back in the component cavity along with vertical movement of the control button in the control hole, and the mounting hole is formed in the side end, corresponding to the sliding direction of the control assembly, of the component cavity. The luggage case is simple in structure and convenient to operate, the idler wheels of the luggage case are flexible and convenient to disassemble and replace, the service life of the luggage case is prolonged, the application range of the luggage case is widened, and people can go out more easily and conveniently.

Description

Technical Field

[0001] The utility model belongs to the technical field of luggage cases, and in particular relates to a detachable luggage case wheel assembly. Background Art

[0002] A suitcase 3, also known as a travel case or a trolley case, is a box used to carry items when going out. Usually, the suitcase 3 is used to store clothes, personal care products and souvenirs needed for the journey. With the development of the times, more and more people go out to travel and work, and suitcases have gradually become a common tool for people to carry luggage when going out. With the increase in the frequency of use, the performance of the suitcase has also attracted more and more attention from users. During the use of the suitcase, the wheel assembly is the part that wears the most, and its performance has attracted more attention. The rollers and wheel frames on traditional suitcases are usually installed as a whole and cannot be disassembled at will. When the rollers are damaged, the wheel frames need to be removed together for replacement, which is inconvenient. Especially during the journey, when the rollers of the suitcase are damaged halfway, they cannot be replaced in time, which brings great inconvenience to people's travel. Utility Model Content

[0003] The utility model aims to provide a detachable luggage case wheel assembly to solve the technical problem that the existing luggage case wheels are difficult to disassemble and replace.

[0004] To achieve the above purpose, the specific technical solution of the utility model is as follows:

[0005] A detachable luggage case wheel assembly comprises a corresponding wheel frame and a roller, which are detachably fixedly connected with each other, the roller being correspondingly connected to a luggage case body through the wheel frame, the wheel frame comprising a seat plate installed corresponding to the luggage case, the seat plate being provided with a component cavity with side walls fixed on its upper surface, a control component being provided in the component cavity, a control hole and a polygonal mounting hole being through-through on the bottom surface of the component cavity, a control button corresponding to the control component being provided in the control hole, the control component sliding back and forth in the component cavity as the control button moves up and down in the control hole, the mounting hole being provided at one side end of the component cavity corresponding to the sliding direction of the control component, the roller being correspondingly installed with the wheel frame through the mounting hole, and a detachable fixed connection with the wheel frame is achieved through the cooperation of the control component and the mounting hole.

[0006] Further, the control assembly includes a control plate and a control spring, wherein the control plate is arranged in the component cavity above the control button, and its two ends respectively correspond to the mounting hole and the control spring, and the side surfaces of the control plate and the corresponding ends of the mounting hole are provided with an inwardly concave arc-shaped groove corresponding to the roller, and the distance between the distal side walls of the arc-shaped groove and the control hole is not greater than half of the sum of the inner diameter of the control hole and the inner diameter of the annular groove, and the roller is fixed to the wheel frame through the arc-shaped groove, and the control spring is arranged at the other end of the control plate opposite to the mounting hole, and the side surfaces of the control plate and the corresponding ends of the control spring are provided with a transverse convex extending toward the outside thereof, and the transverse convex extends from the corresponding end of the control spring into the inner circle thereof, and the control spring is The other end abuts against the side wall of the component cavity on the corresponding side, and a support platform with a lower end fixed to the bottom surface of the component cavity is provided on the lower side of the control spring abutting against the inner wall of the component cavity, and an inner groove corresponding to the control spring is provided on the upper end of the support platform. The control spring is always in a compressed state in the component cavity, and an inclined sliding block corresponding to the control button is provided on the lower side of the control board, and the top end of the inclined sliding block is fixedly connected to the control board, and an inclined lower slope is provided on its lower end surface, which is inclined along the sliding direction of the control board, and its end near the control spring is lower than the other end near the control hole, and an upper slope corresponding to the lower slope is provided on the upper end of the control button, and the length of the upper slope is shorter than the length of the lower slope.

[0007] Furthermore, the roller includes a wheel body, a mounting seat and a mounting shaft, and the roller is installed in cooperation with the wheel frame through the mounting shaft, wherein the mounting seat is arranged between the wheel body and the mounting shaft, and the wheel body is correspondingly installed at the lower end of the mounting seat, and the mounting shaft is arranged above the mounting seat, and its lower end is fixedly connected to the mounting seat, and an annular groove corresponding to the control board is provided on the upper part of the mounting shaft, and an end cap is provided above the annular groove, and the outer diameter of the end cap is not larger than the outer diameter of the mounting hole, and a reinforcing plate is provided between the mounting seat and the mounting shaft, and the distance from the lower surface of the annular groove to the upper surface of the reinforcing plate corresponds to the distance from the lower surface of the control board to the lower surface of the seat plate.

[0008] Furthermore, a downward annular bottom convex is provided on the lower surface of the seat plate, the upper end of the bottom convex is connected to the lower surface of the seat plate, the bottom convex is arranged around the periphery of the mounting hole, and its center is on the axis of the mounting hole, and the bottom convex corresponds to the reinforcing plate.

[0009] Furthermore, the upper end of the component cavity is open, the upper surface of the control plate is lower than the top end of the side wall of the component cavity, a corresponding end cover is provided at the upper port of the component cavity, the end cover and the side wall of the component cavity are detachably fixedly connected, a slide groove corresponding to the control spring is provided on the lower surface of the end cover, the slide groove is provided above the control spring, and is recessed upward from the lower surface of the end cover with an arc not less than the outer diameter of the control spring, the length of the slide groove is not shorter than the length of the control spring, and the top side of the control spring is against the top end of the slide groove.

[0010] Furthermore, a tube protrusion is provided on the upper surface of the seat plate, and the inner cavity of the tube protrusion is an extension of the mounting hole toward the upper side of the seat plate, and the upper end of the tube protrusion is correspondingly fitted with the lower surface of the control board.

[0011] Furthermore, reinforcing ribs are provided around the periphery of the tube convex, the lower end of which is fixedly connected to the seat plate, and the upper end of which is correspondingly fitted with the lower surface of the control plate, and the reinforcing ribs include warp ribs and ring ribs, wherein the ring ribs are provided around the periphery of the tube convex, and are in a ring shape with the mounting hole as the center, and a plurality of warp ribs are evenly distributed in a circumferential direction between the tube convex and the ring ribs, and the two ends of the warp ribs are respectively connected to the outer wall of the tube convex and the inner wall of the ring ribs.

[0012] Furthermore, the side surfaces of the seat plate extend upward to form corresponding side panels, the total number of which is no more than two, and the plurality of side panels are arranged on adjacent side surfaces of the seat plate near one end of the mounting hole, and the side panels are fixedly connected to the corresponding sides of the suitcase.

[0013] Furthermore, the control button is T-shaped, the lower end of which penetrates into the control hole from top to bottom, the upper end crossbeam is embedded in the component cavity, and an air hole is provided on the lower inclined surface of the control button.

[0014] Furthermore, the cross-section of the component cavity is cross-shaped, the control hole is arranged in the middle of the component cavity, the control plate is arranged in the vertical groove of the cross-shaped component cavity, the mounting hole is arranged at the rear end of the vertical groove of the cross-shaped component cavity, the upper end cross beam of the T-shaped control button is correspondingly embedded in the horizontal groove of the cross-shaped component cavity, the horizontal protrusion extends from the rear end of the control spring into its inner circle, the rear end of the control spring abuts on the front side wall of the control plate on both sides of the horizontal protrusion, and the front end of the control spring abuts on the front inner wall of the vertical groove of the component cavity.

[0015] The detachable luggage case wheel assembly of the utility model has a simple structure, and the rollers of the luggage case are changed from an integral body to a detachable one. The operation is simple and the detachable is convenient, and the detachable is applicable to rollers of various models and types. The user can flexibly replace the rollers at any time according to the needs at home or on the road, so that the detachment and replacement of the rollers of the luggage case becomes more flexible, more convenient and faster, and the service life and application range of the luggage case are increased, making people's travel more convenient, improving people's travel experience, and making people's travel more relaxed and more assured. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a wheel frame of a detachable luggage case wheel assembly of the utility model;

[0017] Figure 2 The utility model is a detachable luggage case wheel assembly along the Figure 1 Section view in AA direction;

[0018] Figure 3 The utility model is a detachable luggage wheel assembly Figure 1 Schematic diagram of the structure without end caps;

[0019] Figure 4This is a diagram showing the installation and use status of the detachable luggage case wheel assembly of the utility model;

[0020] Explanation of the marks in the figure: 1. wheel frame; 11. seat plate; 12. component cavity; 13. control hole; 14. mounting hole; 15. pipe convex; 16. bottom convex; 17. side plate; 2. roller; 21. wheel body; 22. mounting seat; 23. mounting shaft; 24. annular groove; 25. end cap; 26. reinforcement plate; 3. luggage compartment; 4. control button; 41. upper inclined surface; 5. control assembly; 51. control board; 52. control spring; 53. arc-shaped slot; 54. transverse convex; 55. inclined slider; 56. lower inclined surface; 6. support platform; 61. inner groove; 7. end cover; 71. slide groove; 8. reinforcement rib; 81. warp rib; 82. ring rib. DETAILED DESCRIPTION

[0021] In order to better understand the purpose, structure and function of the present invention, a detachable luggage case wheel assembly of the present invention is further described in detail below with reference to the accompanying drawings.

[0022] like Figure 1-4 As shown, the detachable luggage case wheel assembly of the utility model includes a wheel frame 1 and a roller 2, which are used in correspondence with each other, and the roller 2 is correspondingly connected to the luggage case 3 through the wheel frame 1. In order to better maintain the balance of the luggage case 3, multiple pairs of wheel assemblies can be installed at the bottom of the luggage case 3, wherein the wheel frame 1 is fixedly connected to the luggage case 3, and the roller 2 is installed on the wheel frame 1. The two are detachably fixedly connected, and the roller 2 can be flexibly disassembled from the luggage case 3 through the corresponding wheel frame 1. When the roller 2 is damaged, it is convenient to replace it in time, thereby avoiding further affecting the use of the luggage case 3.

[0023] The wheel frame 1 includes a seat plate 11, on which a control assembly 5 is provided. The wheel frame 1 is fixedly mounted on the corresponding luggage box 3 through the seat plate 11. In this embodiment, a plurality of assembly holes 14 are reserved on the seat plate 11, and the seat plate 11 is fixed to the corresponding surface of the luggage box 3 through the assembly holes 14 and corresponding screws. A component cavity 12 is provided on the upper surface of the seat plate 11. In this embodiment, the side wall of the component cavity 12 and the seat plate 11 are integrally formed, and the upper end of the component cavity 12 is open, and its cross-section is set to a cross shape. The control assembly 5 is arranged in the component cavity 12, and a control hole 13 penetrating downward is provided on the bottom surface of the middle part of the component cavity 12. A control button 4 corresponding to the control assembly 5 is provided in the control hole 13, and the control button 4 can move up and down in the control hole 13, and the control assembly 5 is driven to slide back and forth in the component cavity 12 as it moves up and down. The control button 4 in this embodiment is set to a T-shape, and the lower end of the T-shape penetrates into the control hole 13 from top to bottom, and the upper end of the T-shaped control button 4 The crossbeam is embedded in the cross groove of the cross-shaped component cavity 12, and the two correspond to each other. The T-shaped crossbeam can limit the downward movement distance of the control button 4. At the same time, the crossbeam can slide up and down in the cross groove of the component cavity 12. When the control button 4 moves up and down, the cooperation between the cross groove and the crossbeam provides a guiding effect for it. A mounting hole 14 is provided on the bottom surface of one side end of the component cavity 12 corresponding to the sliding direction of the control component 5. The mounting hole 14 is a polygonal through hole that passes through from top to bottom, and its inner diameter is smaller than the inner diameter of the component cavity 12 corresponding to its position. In this embodiment, the mounting hole 14 is a hexagonal through hole, which is provided on the bottom surface of the rear side end of the vertical groove of the cross-shaped component cavity 12. The roller 2 is installed corresponding to the wheel frame 1 through the mounting hole 14. The detachable fixed connection between the roller 2 and the wheel frame 1 is realized through the cooperation of the control component 5 and the mounting hole 14. The polygonal setting of the mounting hole 14 can prevent the relative rotation between the roller 2 and the wheel frame 1 during installation in the radial direction, thereby playing a radial fixing role for the roller 2.

[0024] The control assembly 5 includes a control board 51 and a control spring 52, wherein the control board 51 is arranged in the component cavity 12 above the control button 4, and its upper surface is lower than the top of the side wall of the component cavity 12. Under the action of the control button 4, the control board 51 can slide forward and backward in the component cavity 12 along the direction from the control hole 13 to the mounting hole 14. By moving the control board 51 and cooperating with the mounting hole 14, the roller 2 and the wheel frame 1 can be flexibly disassembled and installed. In this embodiment, the control board 51 is arranged in the vertical groove of the cross-shaped component cavity 12, and its width corresponds to the width of the vertical groove of the component cavity 12. The two ends of the control board 51 correspond to the mounting hole 14 and the control spring 52 respectively. The side surface of the end corresponding to the mounting hole 14 is provided with an inwardly concave arc-shaped card groove 53, and the arc-shaped card groove 53 is connected to the roller 2, the roller 2 is fixed on the wheel frame 1 through the arc-shaped groove 53, the control spring 52 is arranged on the other end of the control plate 51 opposite to the mounting hole 14, and its axis is on the extension line of the axis of the control plate 51. The side surfaces of the corresponding ends of the control plate 51 and the control spring 52 are provided with a transverse protrusion 54, the transverse protrusion 54 is an outer protrusion formed by the middle plate body of the corresponding side of the control plate 51 extending toward the outside along its upper and lower surfaces, the width of the transverse protrusion 54 corresponds to the inner diameter of the control spring 52, the transverse protrusion 54 extends from the corresponding end of the control spring 52 into its inner circle, the other end of the control spring 52 abuts against the side wall of the component cavity 12 on the corresponding side, and the control spring 52 is always in a compressed state in the component cavity 12. In this embodiment, the transverse protrusion 54 extends from the rear end of the control spring 52 into its inner circle, and the control spring The rear end of the spring 52 abuts against the front side walls of the control plate 51 on both sides of the transverse protrusion 54, and the front end of the control spring 52 abuts against the front inner wall of the vertical groove of the component cavity 12. A corresponding support platform 6 is provided on the lower side of the control spring 52 that abuts against the inner wall of the component cavity 12. The lower end of the support platform 6 is fixed to the bottom surface of the component cavity 12, and its outer side wall is in contact with the corresponding inner wall of the component cavity 12. Its upper end corresponds to the control spring 52. An inner groove 61 corresponding to the control spring 52 is provided at the upper end of the support platform 6. This inner groove 61 is an arc-shaped arc corresponding to the control spring 52. The lower side of the front end of the control spring 52 abuts against the inner groove 61. When the control spring 52 is extended and retracted, the inner groove 61 cooperates with the transverse protrusion 54 to guide it, and can also prevent the control spring 52 from popping out to its lower side. An inclined sliding block 55 corresponding to the control button 4 is provided on the lower side of the control plate 51. The inclined sliding block 55 is provided just above the control button 4. The top end of the inclined sliding block 55 is fixedly connected to the control plate 51, and an inclined lower inclined surface 56 is provided on its lower end surface. In this embodiment, an inclined plate formed by bending a plate in the front middle part of the control plate 51 downward serves as the inclined sliding block 55. The lower surface of the inclined plate is the lower inclined surface 56. The lower inclined surface 56 is inclined along the sliding direction of the control plate 51, and its end near the control spring 52 is lower than the other end near the control hole 13. An upper inclined surface 41 corresponding to the lower inclined surface 56 is provided on the upper end of the control button 4, and the two fit each other. The length of the upper inclined surface 41 is shorter than the length of the lower inclined surface 56. The position where the upper inclined surface 41 fits with the lower inclined surface 56 can be changed by moving the control button 4 up and down.Thus, the front and rear positions of the control board 51 in the component cavity 12 are changed, and the roller 2 can be removed or installed by changing the relative distance between the rear end of the control board 51 and the corresponding control hole 13 and the corresponding rear side wall of the component cavity 12.

[0025] Furthermore, air holes are provided on the lower inclined surface 56 of the control button 4. The provision of the air holes prevents the lower inclined surface 56 from being unable to separate from the upper inclined surface 41 when they are in contact with each other due to too high a vacuum degree, thereby affecting the relative sliding between the two and thus affecting the use of the wheel set.

[0026] There are many available styles of the roller 2, for example: a type with brakes, a type with shock absorption, etc. The user can flexibly choose according to his or her needs. In this embodiment, a roller 2 with a brake function is selected. The roller 2 includes a wheel body 21, a mounting seat 22 and a mounting shaft 23, wherein the mounting seat 22 is arranged between the wheel body 21 and the mounting shaft 23, the wheel body 21 is correspondingly mounted on the lower end of the mounting seat 22, and the two are rotatably connected. A corresponding brake device is provided in the middle of the wheel body 21, the mounting shaft 23 is arranged at the upper end of the mounting seat 22, and its lower end is fixedly connected to the mounting seat 22, and the axis of the mounting shaft 23 is on the upper extension line of the axis of the mounting seat 22. The roller 2 is connected to the wheel frame 1 through the mounting shaft 23. The upper part of the mounting shaft 23 is provided with an annular groove 24. The width of the annular groove 24 is not less than the thickness of the control plate 51, and its diameter is not greater than the bending diameter of the arc-shaped groove 53 of the control plate 51. When the control plate 51 is at the rearmost end of the component cavity 12 under the action of the control spring 52, the distance between the side wall of the arc-shaped groove 53 and the farthest side wall of the control hole 13 is not greater than half of the sum of the inner diameter of the control hole 13 and the inner diameter of the annular groove 24. The mounting shaft 23 cooperates with the arc-shaped groove 53 of the control plate 51 through the annular groove 24, thereby controlling the removal of the roller 2 from the wheel frame 1. Above the groove 24 is an end cap 25 of the mounting shaft 23. The outer diameter of the end cap 25 is larger than the outer diameter of the annular groove 24, but not larger than the outer diameter of the mounting hole. The arrangement of the end cap 25 prevents the roller 2 from falling off at will when it is fixed on the wheel frame 1, making the corresponding installation between the two more secure. A reinforcing plate 26 is provided between the mounting seat 22 of the roller 2 and the mounting shaft 23, the center of which is on the extended line of the axis of the mounting shaft 23. The outer diameter of the reinforcing plate 26 is larger than the outer diameter of the mounting shaft 23 and the mounting seat 22. In this embodiment, the outer diameter of the reinforcing plate 26 is not less than 1.5 times the outer diameter of the mounting seat 22, but smaller than the outer diameter of the mounting hole 1. 4 to the distance from the nearest edge of the seat plate 11, when the roller 2 and the wheel frame 1 are installed correspondingly, it is located below the seat plate 11, the reinforcing plate 26, the setting of the reinforcing plate 26 increases the contact area between the upper end of the roller 2 and the wheel frame 1, and the pressure transmitted to the roller 2 by the luggage box 3 through the wheel frame 1 is dispersed to a larger area, thereby improving the vertical bearing capacity of the wheel set, and the distance from the upper surface of the annular groove 24 to the upper surface of the reinforcing plate 26 corresponds to the distance from the upper surface of the control board 51 to the lower surface of the seat plate 11, so that the roller 2 will not slide up and down at will when it is installed correspondingly with the wheel frame 1, thereby making the corresponding luggage box 3 run more smoothly.

[0027] A corresponding end cover 7 is provided at the upper opening of the component cavity 12. The shape of the end cover 7 corresponds to the shape of the component cavity 12. There is no end cover 7 at the upper port of the component cavity 12 corresponding to the mounting hole 14. In this embodiment, it is a corresponding cross shape. The end cover 7 and the side wall of the component cavity 12 are detachably fixed. In this embodiment, the two are correspondingly installed through reserved threaded holes and corresponding bolts. A slide groove 71 is provided on the lower surface of the end cover 7. The position of the slide groove 71 corresponds to the control spring 52 and is provided above the control spring 52. The length of the slide groove 71 is not shorter than the length of the control spring 52. It is recessed upward from the lower surface of the end cover 7 with a certain curvature, and the curvature of the side wall of the slide groove 71 is not less than the curvature of the outer diameter of the control spring 52. After the end cover 7 is installed correspondingly to the component cavity 12, the top side of the control spring 52 is against the top of the slide groove 71. When the control spring 52 shrinks or rebounds as the control plate 51 moves forward and backward, its top side slides back and forth in the slide groove 71 accordingly. The end cover 7 can prevent it from popping out toward the upper end of the component cavity 12 when it is subjected to force, thereby preventing the pop-up of the control spring 52 from affecting the subsequent operation of the control component 5, and further preventing it from affecting the normal disassembly and use of the wheel set.

[0028] A tube protrusion 15 corresponding to the mounting hole 14 is provided on the upper surface of the seat plate 11. The tube protrusion 15 is a tubular boss, the upper end of which is lower than the upper opening of the component cavity 12 and corresponds to the lower surface of the control plate 51. The two fit each other, and the size and shape of the inner cavity are the same as the inner diameter of the mounting hole 14. It is an extension of the mounting hole 14 to the top of the seat plate 11. In this embodiment, its outer ring fits the inner wall of the component cavity 12 closest to the mounting hole 14. The seat plate 11, the tube protrusion 15 and the component cavity 12 are integrally formed. The tube protrusion 15 can make the assembly between the mounting shaft 23 of the roller 2 and the wheel frame 1 more secure. A reinforcing rib 8 is provided around the periphery of the tube protrusion 15, and the lower end of the reinforcing rib 8 is fixedly connected to the seat plate 11 and is connected to the seat The plate 11 is integrally formed, and its upper end corresponds to the lower surface of the control plate 51, and the two are fitted to each other. The tube protrusion 15 and the reinforcing ribs 8 together provide a certain support for the control plate 51. The reinforcing ribs 8 include warp ribs 81 and ring ribs 82, wherein the ring ribs 82 are arranged around the periphery of the tube protrusion 15, and are annular with the center of the mounting hole 14 as the center of the circle. The warp ribs 81 are arranged between the tube protrusion 15 and the ring ribs 82, and the two ends thereof are respectively connected to the outer wall of the tube protrusion 15 and the inner wall of the ring rib 82. A plurality of warp ribs 81 are evenly distributed around the circumferential direction between the tube protrusion 15 and the ring ribs 82. The arrangement of the tube protrusion 15 and the reinforcing ribs 8 enables the roller 2 to withstand a larger radial force transmitted by the suitcase 3 through the wheel frame 1 when in use.

[0029] A downward bottom convexity 16 is provided on the lower surface of the seat plate 11. The bottom convexity 16 is annular, and its upper end is connected to the lower surface of the seat plate 11. The two are integrally formed and arranged around the periphery of the mounting hole 14. Its center is on the axis of the mounting hole 14. The inner circle of the bottom convexity 16 corresponds to the outer diameter of the reinforcing plate 26, and its depth corresponds to the thickness of the reinforcing plate 26. In this embodiment, its depth is slightly greater than the thickness of the reinforcing plate 26, but its bottom end is much higher than the lower end of the control button 4. The setting of the bottom convexity 16 can prevent debris on the ground from entering the installation connection between the roller 2 and the wheel frame 1, and can better protect the corresponding installation of the two from interference and damage by external debris, thereby improving the service life of the wheel set.

[0030] A side panel 17 is added to the side of the seat plate 11. The side panel 17 is formed by extending upward from the corresponding side of the seat plate 11. Side panels 17 can be added to multiple side surfaces of the seat plate 11 at the same time. The total number of side panels 17 is not more than two. When the number of side panels 17 on the seat plate 11 is greater than one, the side panels 17 are arranged on the adjacent two side surfaces of the seat plate 11, and they are arranged at one end near the mounting hole 14. In this embodiment, the rear side end and the right side end upper surface of the seat plate 11 extend upward along the corresponding side surfaces to form corresponding rear side panels 17 and right side panels 17. The side panels 17 are provided with the same assembly holes 14 as the seat plate 11. When the wheel frame 1 is correspondingly installed with the corresponding luggage box 3, the side panels 17 are fixedly connected to the corresponding side surfaces of the luggage box 3 through the external screws of the assembly holes 14. The arrangement of the side panels 17 increases the force application area of ​​the luggage box 3 on the wheel frame 1, increases the firmness of the installation between the two, and enables the wheel frame 1 to bear a greater force transmitted by the luggage box 3 in multiple directions. Such a design provides support for the luggage box 3 to bear a greater force.

[0031] When in use, firstly, the wheel set is installed at the bottom of the suitcase 3 through the wheel frame 1. The number of wheel sets can be flexibly selected according to needs. In this embodiment, two pairs of wheel sets are fixedly installed at the bottom of the suitcase 3. Each pair of wheel sets is mirror-imaged along the center line of the corresponding surface of the suitcase 3. The control spring 52 is always in a rebound state. When the roller is not installed on the wheel frame 1, the control plate 51 is at the rearmost end of the vertical groove of the component cavity 12 under the action of the control spring 52. The distance between the side wall of the arc-shaped slot 53 and the farthest side wall of the control hole 13 is not greater than half of the sum of the inner diameter of the control hole 13 and the inner diameter of the annular groove 24. The upper inclined surface 41 Correspondingly fitted at the lower end of the lower inclined surface 56, the control button 4 is pressed at this time to apply an upward force to it, and the control button 4 transmits the force to the control board 51. Under the cooperation of the upper inclined surface 41 and the lower inclined surface 56, most of this force is converted into a lateral force, and this lateral force is the force that drives the control board 51 upward. When this force is greater than the elastic force of the control spring 52 on the control board 51, the control button 4 moves upward, and the fitting part of the upper inclined surface 41 and the lower inclined surface 56 moves synchronously to the upper part of the lower inclined surface 56, so that the inclined slider 55 drives the control board 51 to move toward the front end of the component cavity 12. When the arc-shaped slot 53 is aligned with the distal end When the distance between the side walls of the mounting hole 14 is greater than the inner diameter of the mounting hole 14, the mounting shaft 23 of the roller 2 can be inserted into the mounting hole 14 from the bottom of the seat plate 11. When the mounting shaft 23 is fully inserted into the mounting hole 14, the force applied to the control button 4 is released, and the control board 51 moves toward the rear end of the component cavity 12 under the elastic force of the control spring 52, and stops when it moves to the arc-shaped slot 53 and is engaged with the upper annular slot 24 of the mounting shaft 23. At this time, the control board 51 cooperates with the mounting hole 14 and the side walls of the component cavity 12 under the elastic force of the control spring 52 to fix the roller 2 on the wheel frame 1. The installation of the roller 2 is completed. If you want to replace the roller 2, press the control button 4 again, and the control board 51 in the component cavity 12 repeats the forward movement. When the control board 51 moves forward to the rear end and the arc groove 53 disengages from the annular groove 24, and the distal distance between the arc groove 53 and the mounting hole 14 is greater than the outer diameter of the end cap 25, the roller 2 can be removed from the wheel frame 1. When the distance between the arc groove 53 and the side wall of the distal mounting hole 14 is greater than the inner diameter of the mounting hole 14, install a new roller 2 and relax the force on the button. The disassembly and assembly between the roller 2 and the wheel frame 1 can be completed by pressing the button as above.

[0032] The detachable luggage wheel assembly of the utility model has a simple structure, and the wheel frame 1 and the roller 2 are flexibly disassembled and assembled through the control assembly 5, so that when the roller 2 of the luggage 3 is damaged, there is no need for a professional repair organization, and the user can flexibly replace the roller 2 at any time at home or on the road. The operation is simple, making the removal and replacement of the roller 2 of the luggage 3 more convenient and quick, and the utility model is suitable for a variety of different models and types of rollers 2, and the rollers 2 with different functions can be replaced for the luggage 3 according to the use needs, making it more convenient and labor-saving for people to carry luggage when traveling.

[0033] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A detachable luggage wheel assembly, characterized in that: The invention relates to a luggage case comprising a corresponding wheel frame (1) and a roller (2), which are detachably fixedly connected to each other. The wheel frame (1) comprises a seat plate (11) mounted corresponding to the luggage case (3). The seat plate (11) is provided with a component cavity (12) whose side wall is fixed on its upper surface. A control component (5) is arranged in the component cavity (12). A control hole (13) and a polygonal mounting hole (14) which penetrate from top to bottom are arranged on the bottom surface of the component cavity (12). A control button (4) corresponding to the control component (5) is arranged in the control hole (13). The control component (5) slides forward and backward in the component cavity (12) as the control button (4) moves up and down in the control hole (13). The mounting hole (14) is arranged at one side end of the component cavity (12) corresponding to the sliding direction of the control component (5). The roller (2) is mounted corresponding to the wheel frame (1) through the mounting hole (14). At the same time, the detachable fixed connection between the roller (2) and the wheel frame (1) is achieved through the cooperation between the control component (5) and the mounting hole (14).

2. The detachable luggage wheel assembly according to claim 1, characterized in that: The control assembly (5) comprises a control plate (51) and a control spring (52), wherein the control plate (51) is arranged in a component cavity (12) above the control button (4), and its two ends correspond to the mounting hole (14) and the control spring (52) respectively; an inwardly concave arc-shaped clamping groove (53) corresponding to the roller (2) is arranged on the side surface of the end of the control plate (51) corresponding to the mounting hole (14); the roller (2) is clamped on the wheel frame (1) through the arc-shaped clamping groove (53); the control spring (52) is arranged on the other end of the control plate (51) corresponding to the mounting hole (14); a transverse protrusion (54) extending toward the outside thereof is arranged on the side surface of the end of the control plate (51) corresponding to the control spring (52); the transverse protrusion (54) extends from the corresponding end of the control spring (52) into the inner circle thereof; the other end of the control spring (52) abuts against the component cavity on the corresponding side. On the side wall of the component cavity (12), a support platform (6) is provided at the lower side of the control spring (52) at the end abutting against the inner wall of the component cavity (12), and the lower end of the support platform (6) is fixed to the bottom surface of the component cavity (12); the upper end of the support platform (6) is provided with an inner groove (61) corresponding to the control spring (52); the control spring (52) is always in a compressed state in the component cavity (12); the lower side of the control plate (51) is provided with an inclined sliding block (55) corresponding to the control button (4); the top end of the inclined sliding block (55) is fixedly connected to the control plate (51); the lower end surface of the inclined sliding block (55) is provided with an inclined lower inclined surface (56); the lower inclined surface (56) is inclined along the sliding direction of the control plate (51); the end near the control spring (52) is lower than the other end near the control hole (13); the upper end of the control button (4) is provided with an upper inclined surface (41) corresponding to the lower inclined surface (56).

3. The detachable luggage wheel assembly according to claim 2, characterized in that: The roller (2) comprises a wheel body (21), a mounting seat (22) and a mounting shaft (23), wherein the roller (2) is mounted on the wheel frame (1) via the mounting shaft (23), wherein the mounting seat (22) is arranged between the wheel body (21) and the mounting shaft (23), the wheel body (21) is correspondingly mounted on the lower end of the mounting seat (22), the mounting shaft (23) is arranged above the mounting seat (22), and its lower end is fixedly connected to the mounting seat (22), an annular groove (24) corresponding to the control board (51) is arranged on the upper part of the mounting shaft (23), an end cap (25) is arranged above the annular groove (24), and a reinforcing plate (26) is arranged between the mounting seat (22) and the mounting shaft (23).

4. The detachable luggage wheel assembly according to claim 3, characterized in that: A downward annular bottom protrusion (16) is provided on the lower surface of the seat plate (11), the upper end of the bottom protrusion (16) is connected to the lower surface of the seat plate (11), the bottom protrusion (16) is arranged around the periphery of the mounting hole (14), and the bottom protrusion (16) corresponds to the reinforcing plate (26).

5. The detachable luggage wheel assembly according to claim 2, characterized in that: The upper end of the component cavity (12) is open, the upper surface of the control plate (51) is lower than the top of the side wall of the component cavity (12), a corresponding end cover (7) is provided at the upper end of the component cavity (12), the end cover (7) and the side wall of the component cavity (12) are detachably fixedly connected, a slide groove (71) corresponding to the control spring (52) is provided on the lower surface of the end cover (7), the slide groove (71) is provided above the control spring (52), and the top side of the control spring (52) abuts against the top of the slide groove (71).

6. The detachable luggage wheel assembly according to claim 2, wherein: A tube protrusion (15) is provided on the upper surface of the seat plate (11), the inner cavity of which is an extension of the mounting hole (14) toward the upper side of the seat plate (11), and the upper end of the tube protrusion (15) is correspondingly fitted with the lower surface of the control plate (51).

7. The detachable luggage wheel assembly according to claim 6, characterized in that: The outer periphery of the tube protrusion (15) is provided with reinforcing ribs (8), the lower end of which is fixedly connected to the seat plate (11), and the upper end of which is correspondingly fitted with the lower surface of the control plate (51), the reinforcing ribs (8) include warp ribs (81) and ring ribs (82), wherein the ring ribs (82) are arranged around the outer periphery of the tube protrusion (15) and are in a ring shape with the mounting hole (14) as the center, and a plurality of warp ribs (81) are evenly distributed in a circumferential direction between the tube protrusion (15) and the ring ribs (82), and the two ends of the warp ribs (81) are respectively connected to the outer side wall of the tube protrusion (15) and the inner side wall of the ring rib (82).

8. The detachable luggage wheel assembly according to claim 2, wherein: The side surface of the seat plate (11) extends upward to form a corresponding side plate (17), the total number of the side plates (17) is no more than two, and the plurality of side plates (17) are arranged on adjacent two side surfaces of one end of the seat plate (11) near the mounting hole (14), and the side plates (17) are fixedly connected to the corresponding side surfaces of the luggage box (3).

9. The detachable luggage wheel assembly according to claim 2, wherein: The control button (4) is T-shaped, with its lower end inserted into the control hole (13) from top to bottom, and its upper end crossbeam embedded in the component cavity (12). An air hole is provided on the lower inclined surface (56) of the control button (4).

10. The detachable luggage wheel assembly according to any one of claims 1 to 9, characterized in that: The cross section of the component cavity (12) is cross-shaped, the control hole (13) is arranged in the middle of the component cavity (12), the control plate (51) is arranged in the vertical groove of the cross-shaped component cavity (12), the mounting hole (14) is arranged at the rear side end of the vertical groove of the cross-shaped component cavity (12), the upper end cross beam of the T-shaped control button (4) is correspondingly embedded in the horizontal groove of the cross-shaped component cavity (12), the horizontal protrusion (54) extends from the rear end of the control spring (52) into its inner circle, the rear end of the control spring (52) abuts against the front side wall of the control plate (51) on both sides of the horizontal protrusion (54), and the front end of the control spring (52) abuts against the front side inner wall of the vertical groove of the component cavity (12).

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