Luggage wheel set with damping function

Abstract

The utility model discloses a luggage wheel set with a damping function, which comprises a connecting seat and a wheel seat rotatably connected with the connecting seat, rollers are rotatably arranged on two sides of the wheel seat, the wheel seat comprises a first wheel seat and a second wheel seat, the first wheel seat is rotatably connected and matched with the connecting seat through a vertical shaft, and the second wheel seat is rotatably connected and matched with the connecting seat through a vertical shaft. The first wheel seat and the second wheel seat are rotatably connected and matched through a first transverse shaft, a limiting structure for limiting the relative rotation angle range is arranged between the first wheel seat and the second wheel seat, the rolling wheel is rotatably connected to the second wheel seat through a second transverse shaft, and an elastic component is arranged between the first wheel seat and the second wheel seat in an abutting mode. And the second transverse shaft is at a deviated position relative to the vertical shaft in the horizontal direction. The luggage wheel set with the shock absorption function has a better shock absorption effect when being used for coping with complex road conditions.

Description

Luggage wheel sets with shock absorption function Technical Field

[0001] This utility model relates to a luggage wheel set with shock absorption function. Background Technology

[0002] With the increasing demand for travel, luggage has become an indispensable tool for people's travel and business activities. During the use of luggage, the shock absorption performance of the wheelset directly affects the smoothness of pushing the luggage, the comfort of riding, and the service life of the luggage.

[0003] Currently, most luggage wheel sets with shock absorption function on the market typically include a mounting base, a wheel seat rotatably connected to the mounting base, and a roller rotatably connected to the wheel seat. In order to achieve the shock absorption function, the wheel seat adopts a structure design that can move up and down, and a spring is set between the wheel seat and the mounting base. When traveling on uneven roads, the spring is used to absorb shock for the luggage.

[0004] The existing shock absorption structure of luggage wheel sets is vertical, which can only buffer in the vertical direction. The shock absorption effect is weak when dealing with complex road conditions. It is difficult to effectively disperse and absorb the impact force from the road surface when riding. Therefore, the shock absorption effect needs to be improved. Moreover, the components of the wheel set are usually made of plastic, which is prone to breakage and damage when riding on bumpy roads for a long time. Summary of the Invention

[0005] To address the shortcomings of the existing technology, this utility model provides a luggage wheel set with shock absorption function, which has a better shock absorption effect when dealing with complex road conditions.

[0006] This utility model provides a bag wheel set with shock absorption function, including a connecting seat and a wheel seat rotatably connected to the connecting seat. Rollers are rotatably arranged on both sides of the wheel seat. The wheel seat includes a first wheel seat and a second wheel seat. The first wheel seat and the connecting seat are rotatably connected by a vertical axis. The first wheel seat and the second wheel seat are rotatably connected by a first horizontal axis. A limiting structure restricting the relative rotation angle range is provided between the first wheel seat and the second wheel seat. The rollers are rotatably connected to the second wheel seat by a second horizontal axis. An elastic member is abutting between the first wheel seat and the second wheel seat. The second horizontal axis is offset from the vertical axis in the horizontal direction.

[0007] When the wheelset travels along the road, the wheel seat and roller automatically deflect to the rear opposite to the direction of travel along the vertical axis. When encountering a bumpy road, the roller is subjected to force, which causes the first wheel seat and the second wheel seat to rotate relative to each other along the first horizontal axis. This relative rotation trend forces the elastic component to compress, which can form a buffer. Compared with the straight up and down shock absorption method in the existing technology, it can effectively reduce the impact of the road, reduce the bumps of the luggage, reduce the rigid collision between the roller and the road, and extend the service life of the wheelset and luggage.

[0008] Furthermore, the first wheel seat has a protrusion, and the second wheel seat has a movable groove. The protrusion rotates in the movable groove as the first wheel seat and the second wheel seat rotate relative to each other, and forms a limiting fit with the inner wall of the movable groove. Through the limiting fit design between the protrusion and the movable groove, the relative rotation angle between the first wheel seat and the second wheel seat is limited, so that the elastic component can play a shock absorption role within a reasonable stroke range, effectively improving the stability of the wheel set under complex road conditions.

[0009] Furthermore, the elastic component is a first spring, the first wheel seat has a first spring positioning post, and the second wheel seat has a corresponding second spring positioning post. The two ends of the first spring are respectively sleeved and positioned on the first spring positioning post and the second spring positioning post, which facilitates the positioning and installation of the first spring. In addition, the limiting cooperation of the protrusion and the movable groove can also prevent the first spring from falling off the first spring positioning post and the second spring positioning post.

[0010] Furthermore, both the first spring positioning post and the second spring positioning post are semi-cylindrical in shape, which facilitates the disassembly and assembly of the first spring and also prevents the first spring positioning post and the second spring positioning post from interfering with each other when the first wheel seat and the second wheel seat rotate relative to each other, thereby increasing the rotation range of the first wheel seat and the second wheel seat.

[0011] Furthermore, the upper end of the first wheel seat is provided with a first connecting hole, and the lower end of the vertical shaft is rotatably inserted into the first connecting hole. The side of the first wheel seat is provided with a pin hole, in which a limit pin is inserted. The lower end of the vertical shaft is provided with a lower annular groove into which the limit pin can be inserted. During assembly, the lower end of the vertical shaft is inserted downward into the first connecting hole, and the limit pin is inserted along the pin hole on the side of the first wheel seat. The limit pin can cooperate with the lower annular groove to form an axial limit on the vertical shaft, preventing it from coming out of the first connecting hole. The vertical shaft can adopt a pluggable and detachable structure design, or the end of the limit pin can be riveted to lock the limit pin and the first wheel seat, so that the vertical shaft cannot be pulled out.

[0012] Furthermore, the bottom of the first connecting hole is provided with a rolling ball that cooperates with and supports the lower end of the vertical shaft. The rolling ball serves to support the vertical shaft and can reduce friction during rotation.

[0013] Furthermore, the lower end of the connecting seat is provided with a second connecting hole, and the upper end of the vertical shaft is detachably inserted into the second connecting hole. By pulling the vertical shaft out of the second connecting hole, the vertical shaft, rollers, wheel seats and other components can be removed from the connecting seat as a whole, which enriches the usage scenarios of the bag and also makes it convenient to replace the damaged parts.

[0014] Furthermore, the upper end of the vertical shaft has an upper annular groove, and a retainer that axially limits the vertical shaft by cooperating with the upper annular groove is laterally movably arranged on the connecting seat. One end of the retainer extends out of the connecting seat and can be pressed by hand. The connecting seat is provided with a second spring that pushes the retainer into the upper annular groove. In daily use, the retainer is in a position where it engages with the upper annular groove at the upper end of the vertical shaft to lock the vertical shaft under the action of the second spring. When the retainer is in this position, it can restrict the axial direction of the vertical shaft and prevent it from coming out of the second connecting hole. When disassembly is required, the retainer can be pressed from the outside of the connecting seat to make the retainer come out of the upper annular groove and unlock the vertical shaft, so that it can be pulled out of the second connecting hole. Disassembly and assembly are relatively convenient.

[0015] Furthermore, the roller includes a hub and a rim. The hub includes an inner ring, an outer ring, and multiple support ribs integrally connected between the outer circumferential surface of the inner ring and the inner circumferential surface of the outer ring. These support ribs are spaced apart circumferentially along the roller's axis, and there are perforated holes between adjacent circumferential support ribs. The rim is fitted and fixed to the outer side of the outer ring. The inner side of the inner ring has mounting holes, and a bearing is provided at the mounting holes. The bearing is used to connect to a second horizontal shaft, and a bearing connects the bearing and the second horizontal shaft. The hub is made of aluminum alloy. The perforated holes reduce the weight of the hub and lower production costs. The aluminum alloy hub has higher strength, improving the structural strength of the roller. The bearing reduces the friction between the second horizontal shaft and the bearing, making the roller rotate more smoothly.

[0016] Furthermore, the wheel base is made of aluminum alloy, which has higher strength and is not easily damaged or broken when traveling on bumpy roads. Attached Figure Description

[0017] Figure 1 is a structural diagram of an embodiment of the present utility model;

[0018] Figure 2 is a schematic diagram of the assembly of the roller in an embodiment of the present invention;

[0019] Figure 3 is a schematic diagram of the assembly of the wheel seat according to an embodiment of the present invention;

[0020] Figure 4 is a cross-sectional view of an embodiment of the present utility model;

[0021] Figure 5 is a schematic diagram of the assembly of the vertical shaft according to an embodiment of the present invention. Detailed Implementation

[0022] An embodiment of the shock-absorbing wheel set for bags of this utility model is shown in Figures 1-5. It includes a connecting seat 1 and a wheel seat rotatably connected to the connecting seat 1. The connecting seat 1 is used to cooperate with and fix the bag body. Rollers 2 are rotatably arranged on both sides of the wheel seat. The wheel seat includes a first wheel seat 3 and a second wheel seat 4. The first wheel seat 3 and the connecting seat 1 are rotatably connected by a vertical shaft 51. The first wheel seat 3 and the second wheel seat 4 are rotatably connected by a first horizontal shaft 52. There is a limiting structure between the first wheel seat 3 and the second wheel seat 4 to limit the relative rotation angle range between them. The roller 2 is rotatably connected to the second wheel seat 4 by a second horizontal shaft 53. An elastic member is abutting between the first wheel seat 3 and the second wheel seat 4. The second horizontal shaft 53 is offset from the vertical shaft 51 in the horizontal direction. The axes of the first horizontal shaft 52 and the second horizontal shaft 53 are parallel and perpendicular to the axis of the vertical shaft 51.

[0023] After the first horizontal shaft 52 is connected to the first wheel seat 3 and the second wheel seat 4, its end can be riveted to prevent it from coming off the first wheel seat 3 and the second wheel seat 4. After the second horizontal shaft 53 is connected to the two side rollers 2 and the second wheel seat 4, its end can be riveted to prevent it from coming off the rollers 2 and the second wheel seat 4. A bearing 54 is also provided between the second horizontal shaft 53 and the rollers 2 to reduce the friction when the rollers 2 roll.

[0024] The first wheel seat 3 has a protrusion 31, and the second wheel seat 4 has a movable groove 41. The protrusion 31 rotates in the movable groove 41 as the first wheel seat 3 and the second wheel seat 4 rotate relative to each other, and forms a limiting fit with the inner wall of the movable groove 41. Through the limiting fit design between the protrusion 31 and the movable groove 41, the relative rotation angle between the first wheel seat 3 and the second wheel seat 4 is limited, so that the elastic component can play a shock absorption role within a reasonable stroke range, effectively improving the stability of the wheel set under complex road conditions.

[0025] The elastic component is a first spring 61. The first wheel seat 3 has a first spring positioning post 32, and the second wheel seat 4 has a corresponding second spring positioning post 42. The two ends of the first spring 61 are respectively sleeved and positioned on the first spring positioning post 32 and the second spring positioning post 42, which facilitates the positioning and installation of the first spring 61. Furthermore, through the limiting cooperation of the protrusion 31 and the movable groove 41, when rotating in the direction corresponding to the relaxation of the first spring 61, the two ends of the first spring 61 are kept sleeved and positioned on the first spring positioning post 32 and the second spring positioning post 42, preventing the first spring 61 from falling off the first spring positioning post 32 and the second spring positioning post 42.

[0026] The first spring positioning post 32 and the second spring positioning post 42 are both semi-cylindrical in shape, which facilitates the disassembly and assembly of the first spring 61 and also prevents the first spring positioning post 32 and the second spring positioning post 42 from interfering when rotating in the compression direction of the corresponding first spring 61, thereby improving the rotation range of the first wheel seat 3 and the second wheel seat 4.

[0027] The upper end of the first wheel seat 3 is provided with a first connecting hole 30. The lower end of the vertical shaft 51 is rotatably inserted into the first connecting hole 30. The side of the first wheel seat 3 is provided with a pin hole, in which a limiting pin 55 is inserted. The lower end of the vertical shaft 51 is provided with a lower annular groove 511 into which the limiting pin 55 can be inserted. During assembly, the lower end of the vertical shaft 51 is inserted downward into the first connecting hole 30, and the limiting pin 55 is inserted along the pin hole on the side of the first wheel seat 3. The limiting pin 55 can cooperate with the lower annular groove 511 to form an axial limit on the vertical shaft 51, preventing it from coming out of the first connecting hole 30, as shown in Figure 4.

[0028] The end of the limiting pin 55 is locked to the first wheel seat 3 by riveting, so that the vertical shaft 51 is designed to be unable to be pulled out from the first connecting hole 30. In other embodiments, the vertical shaft 51 may also adopt a pluggable and detachable structure design.

[0029] As shown in Figure 4, the bottom of the first connecting hole 30 is provided with a rolling ball 7 that cooperates with and supports the lower end of the vertical shaft 51. The rolling ball 7 serves to support the vertical shaft 51 and can reduce friction during rotation.

[0030] The lower end of the connecting seat 1 is provided with a second connecting hole 10. The upper end of the vertical shaft 51 is detachably inserted into the second connecting hole 10. By pulling the vertical shaft 51 out of the second connecting hole 10, the vertical shaft 51, roller 2, wheel seat and other components can be removed from the connecting seat 1 as a whole, which enriches the usage scenarios of the bag. For example, it can reduce the weight of the bag and facilitate the replacement of damaged parts.

[0031] The upper end of the vertical shaft 51 has an upper annular groove 512. A retainer 8 is movably mounted on the connecting seat 1, which cooperates with the upper annular groove 512 to limit axial movement. One end of the retainer 8 extends out of the connecting seat 1 and can be pressed by hand. The connecting seat 1 is provided with a second spring 62 that pushes the retainer 81 into the upper annular groove 512. In normal use, the retainer 8 is in a position where it cooperates with the upper annular groove 512 at the upper end of the vertical shaft 51 to lock the vertical shaft 51 under the action of the second spring 62. When the retainer 8 is in this position, the retainer 81 can limit the axial movement of the vertical shaft 51 and prevent it from coming out of the second connecting hole 10. When disassembly is required, the retainer 8 can be pressed from the outside of the connecting seat 1 to make the retainer 81 of the retainer 8 come out horizontally from the upper annular groove 512, thereby unlocking the vertical shaft 51 and allowing it to be pulled out of the second connecting hole 10. Disassembly and assembly are relatively convenient.

[0032] The roller 2 includes a hub 21 and a rim 22 fitted on the outside of the hub 21. The rim 22 can be made of rubber or plastic and can also provide appropriate shock absorption. The hub 21 includes multiple support ribs 211 (equivalent to spokes) and hollow holes 212 formed between the multiple support ribs 211. The hub 21 is made of aluminum alloy. The hollow holes 212 can reduce the weight of the hub 21 and reduce production costs. The aluminum alloy hub 21 has higher strength and can improve the structural strength of the roller 2.

[0033] The hub 21 has a mounting hole at the axle center, and a bearing seat 23 is provided at the mounting hole. The bearing seat 23 is used to connect with the second horizontal shaft 53, and the bearing 54 acts between the bearing seat 23 and the second horizontal shaft 53.

[0034] The roller 2 includes a hub 21 and a rim 22. The hub 21 includes an inner ring, an outer ring, and multiple support ribs 211 integrally connected between the outer circumferential surface of the inner ring and the inner circumferential surface of the outer ring. The multiple support ribs 211 are distributed circumferentially along the axis of the roller, and there are hollow holes 212 between adjacent support ribs 211. The rim 22 is fitted and fixed on the outer side of the outer ring. The inner side of the inner ring has a mounting hole, and a bearing seat 23 is provided at the mounting hole. The bearing seat 23 is used to connect to the second horizontal shaft 53. The bearing 54 is connected between the bearing seat 23 and the second horizontal shaft 53. The hub is made of aluminum alloy. The hollow holes 212 can reduce the weight of the hub 21 and reduce production costs. The aluminum alloy hub 21 has higher strength, which can improve the structural strength of the roller. The bearing 54 can reduce the friction between the second horizontal shaft 53 and the bearing seat 23, making the rotation of the roller 2 smoother.

[0035] In this embodiment, except for the wheel hub 21 which is made of aluminum alloy, all horizontal shafts, vertical shafts, and wheel seats (including the first wheel seat 3 and the second wheel seat 4) are made of aluminum alloy, which has higher strength and is not easily damaged or broken when traveling on bumpy roads.

[0036] When the wheelset of this invention travels along the road surface, under the action of friction, the wheel seat and roller 2 automatically deflect to the rear opposite to the direction of travel along the vertical axis 51. When encountering a bumpy road surface, the roller 2 is subjected to force, which will drive the first wheel seat 3 and the second wheel seat 4 to rotate relative to each other along the first horizontal axis 52. This relative rotation trend will force the first spring 61 to compress, which can form a buffer. Compared with the straight up and down shock absorption method in the prior art, it can effectively reduce the impact of the road surface, reduce the bumps of the bag, reduce the rigid collision between the roller 2 and the road surface, and extend the service life of the wheelset and the bag.

[0037] The above embodiments are merely one preferred embodiment of the present utility model. Ordinary changes and substitutions made by those skilled in the art within the scope of the present utility model's technical solution are all included within the protection scope of the present utility model.

Claims

1. A luggage wheel set with shock absorption function, comprising a connecting seat, a wheel seat rotatably connected to the connecting seat, and rollers rotatably disposed on both sides of the wheel seat, characterized in that: The wheel seat includes a first wheel seat and a second wheel seat. The first wheel seat and the connecting seat are rotatably connected by a vertical axis. The first wheel seat and the second wheel seat are rotatably connected by a first horizontal axis. There is a limiting structure between the first wheel seat and the second wheel seat that limits the range of relative rotation angle. The roller is rotatably connected to the second wheel seat by a second horizontal axis. An elastic member is abutting between the first wheel seat and the second wheel seat. The second horizontal axis is offset from the vertical axis in the horizontal direction.

2. The luggage wheel set with shock absorption function according to claim 1, characterized in that: The first wheel seat has a protrusion, and the second wheel seat has a movable groove. The protrusion rotates in the movable groove as the first wheel seat and the second wheel seat rotate relative to each other, and forms a limiting fit with the inner wall of the movable groove.

3. The luggage wheel set with shock absorption function according to claim 1, characterized in that: The elastic component is a first spring. The first wheel seat has a first spring positioning post, and the second wheel seat has a corresponding second spring positioning post. The two ends of the first spring are respectively sleeved and positioned on the first spring positioning post and the second spring positioning post.

4. The luggage wheel set with shock absorption function according to claim 3, characterized in that: Both the first spring positioning post and the second spring positioning post are semi-cylindrical in shape.

5. The luggage wheel set with shock absorption function according to claim 1, characterized in that: The upper end of the first wheel seat is provided with a first connecting hole, and the lower end of the vertical shaft is rotatably inserted into the first connecting hole. The side of the first wheel seat is provided with a pin hole, in which a limit pin is inserted. The lower end of the vertical shaft is provided with a lower annular groove into which the limit pin can be inserted.

6. The luggage wheel set with shock absorption function according to claim 5, characterized in that: The bottom of the first connecting hole is provided with a rolling ball that cooperates with and supports the lower end of the vertical shaft.

7. The luggage wheel set with shock absorption function according to claim 1, characterized in that: The lower end of the connector is provided with a second connecting hole, and the upper end of the vertical shaft is detachably inserted into the second connecting hole.

8. The luggage wheel set with shock absorption function according to claim 7, characterized in that: The upper end of the vertical shaft has an upper annular groove. A retaining seat that is axially limited and movably arranged on the connecting seat is matched with the upper annular groove. One end of the retaining seat extends out of the outside of the connecting seat and can be pressed by hand. The connecting seat is provided with a second spring that can push the retaining seat into the upper annular groove.

9. The bag wheel set with shock absorption function according to any one of claims 1 to 8, characterized in that: The roller includes a hub and a rim. The hub includes an inner ring, an outer ring, and multiple support ribs integrally connected between the outer circumferential surface of the inner ring and the inner circumferential surface of the outer ring. The multiple support ribs are spaced apart along the circumferential axis of the roller, and there are hollow holes between adjacent support ribs. The rim is fitted and fixed on the outer side of the outer ring. The inner side of the inner ring has a mounting hole, and a bearing is provided at the mounting hole. The bearing is used to connect to a second horizontal shaft. A bearing is connected between the bearing and the second horizontal shaft. The hub is made of aluminum alloy.

10. The bag wheel set with shock absorption function according to any one of claims 1 to 8, characterized in that: The wheel base is made of aluminum alloy.

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