Luggage damping wheel and luggage

Abstract

The damping wheel comprises a mounting seat, supporting legs and a wheel set, the upper ends of the supporting legs are connected with the mounting seat, the lower ends of the supporting legs are connected with the wheel set, the mounting seat comprises a fixed part and a movable part, the upper ends of the supporting legs are connected with the movable part, and elastic spaces are arranged between the fixed part and the movable part at intervals. The movable part can move relative to the fixed part to expand and contract the elastic space, a pressure spring is arranged between the fixed part and the movable part to resist the movable part to compress the elastic space, an elastic piece is arranged between the fixed part and the movable part to resist the movable part to compress the elastic space, and the elastic piece comprises an elastic cushion block; when the wheel set bears external force, the external force is transmitted to the movable part through the supporting legs to compress the elastic space, and the end face of the elastic cushion block is stressed to elastically deform and resists the external force through elastic reset to release the elastic space. The end faces of the elastic cushion blocks are stressed, pressure is borne through surface contact, stress can be balanced, inclination or deformation caused by local uneven stress is effectively avoided, and the effects of balancing, buffering and damping are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bags, and in particular to a bag shock-absorbing wheel and the bag. Background Art

[0002] Currently, all travel bags on the market are equipped with wheels for towing, which greatly improves the convenience of carrying when going out. However, traditional ordinary bag wheels do not have the performance of buffering and shock absorption. When the bag encounters uneven potholes while towing, it will produce a large vibration, which not only has low comfort, but also easily causes damage to the bag itself or the items inside the bag, greatly affecting the user experience.

[0003] In response to the above problems, various luggage manufacturers have made improved designs for luggage wheel sets, and luggage rollers with shock-absorbing functions have been used. Most of them use the elastic characteristics of springs and combine them with the connection structure between the rollers and luggage to achieve shock-absorbing effects. However, the performance of springs will change after repeated use, which will affect the shock-absorbing effect. Therefore, using only springs to achieve the shock-absorbing effect of luggage wheels can no longer meet actual needs. Utility Model Content

[0004] The main purpose of the utility model is to provide a luggage shock-absorbing wheel to solve the problems raised by the background technology and achieve a stable and durable shock-absorbing effect.

[0005] To achieve the above-mentioned purpose, the utility model proposes a luggage shock-absorbing wheel, comprising a mounting seat, a support foot and a wheel group, the upper end of the support foot is connected to the mounting seat, the lower end of the support foot is connected to the wheel group, the mounting seat comprises a fixed part and a movable part, the upper end of the support foot is connected to the movable part, an elastic space is arranged between the fixed part and the movable part, the movable part can move relative to the fixed part to scale the elastic space, an elastic member is arranged between the fixed part and the movable part to resist the movable part from compressing the elastic space, the elastic member comprises an elastic pad, when the wheel group is subjected to external force, the force is transmitted to the movable part through the support foot to compress the elastic space, the end face of the elastic pad is subjected to force and elastically deforms and resists the external force through elastic resetting to release the elastic space.

[0006] Furthermore, the elastic member includes a compression spring, a compression spring is provided between the fixed part and the movable part to resist the movable part from compressing the elastic space, and an elastic pad is provided between the fixed part and the movable part to avoid the position of the compression spring. When the wheel assembly is subjected to external force, the force is transmitted to the movable part through the support foot to compress the elastic space, and the compression spring and / or the elastic pad resist the external force to release the elastic space.

[0007] Furthermore, the bottom surface of the fixed part is recessed upward to provide a groove, the groove is provided with the movable part adapted thereto, one end of the support leg is connected to the movable part, the movable part and the groove enclose the elastic space, the movable part can move along the groove to scale the size of the elastic space, the compression spring is provided in the elastic space, the upper end of the compression spring is abutted against the top surface of the groove, the lower end of the compression spring is abutted against the top surface of the movable part, and the elastic pad is provided in the elastic space to avoid the position of the compression spring.

[0008] Furthermore, the movable part is provided with a guide column extending upward, and a guide hole adapted to the guide column is provided through the fixed part, the guide column movably passes through the guide hole, the compression spring is sleeved on the outer wall of the guide column, and the elastic pad is provided in the elastic space to avoid the guide column and the compression spring.

[0009] Furthermore, a fastening screw is provided on the top of the guide column, and the outer diameter of the head of the fastening screw is larger than the inner diameter of the guide hole.

[0010] Furthermore, there are three guide posts, which are distributed in a triangle shape.

[0011] Furthermore, the support leg is connected to the mounting seat via a first rotating shaft, a first axial hole adapted to the lower end of the first rotating shaft is recessed in the middle of the top surface of the support leg, a circle of limiting concave ring grooves is provided at the lower part of the first rotating shaft, a through hole is provided from the side wall of the first axial hole to the outer wall of the support leg, a limiting pin is provided at the through hole, and the limiting pin passes through the through hole and acts on the limiting concave ring groove.

[0012] Furthermore, the support leg is hinged to the wheel group via a second rotating shaft, a second axial hole is provided at the lower end of the support leg, the wheel group includes rollers provided on both sides of the second axial hole, the second rotating shaft passes through the second axial hole, and both ends of the second rotating shaft are respectively connected to the rollers.

[0013] Furthermore, the support leg is provided with hollow holes on the peripheral side of the second axial hole.

[0014] Another aspect of the present invention further provides a bag, comprising a bag body and the above-mentioned bag shock-absorbing wheel, wherein the mounting seat is fixedly arranged at the bottom of the bag body.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. An elastic space is set between the fixed part and the movable part, and an elastic pad is set in the elastic space, and the elastic deformation and reset of the elastic pad are used to achieve a shock-absorbing effect;

[0017] 2. The elastic pad is subjected to force on its end face and bears pressure through surface contact, which can balance the force and effectively avoid tilting or deformation caused by local uneven force, and has the effect of balancing, buffering and shock absorption. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

[0020] Figure 2 This is a schematic cross-sectional view of the overall structure of Embodiment 1 of the present utility model;

[0021] Figure 3 This is a schematic diagram of the exploded structure of Embodiment 1 of the present utility model;

[0022] Figure 4 This is a schematic cross-sectional diagram of the exploded structure of Embodiment 1 of the present utility model;

[0023] Figure 5 This is a schematic diagram of the assembly structure of the compression spring and the elastic pad in Example 1 of the utility model;

[0024] Explanation of the accompanying figures: 1-mounting seat; 2-support foot; 3-wheel assembly; 4-fixed part; 5-movable part; 6-compression spring; 7-elastic pad; 8-groove; 9-guide column; 10-guide hole; 11-fastening screw; 12-first rotating shaft; 13-second rotating shaft; 14-first shaft hole; 15-limiting concave ring groove; 16-through hole; 17-limiting pin; 18-roller; 19-hollow hole; 20-buffer protrusion. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0028] Example 1: Reference Figures 1 to 5 , a luggage shock-absorbing wheel and luggage, comprising a luggage body (not shown in the figure) and a shock-absorbing wheel, the shock-absorbing wheel comprising a mounting seat 1, a support leg 2 and a wheel set 3, the mounting seat 1 is fixedly arranged at the bottom of the luggage body, the upper end of the support leg 2 is connected to the mounting seat 1, and the lower end of the support leg 2 is connected to the wheel set 3, the mounting seat 1 comprises a fixed part 4 and a movable part 5, the upper end of the support leg 2 is connected to the movable part 5, an elastic space is arranged between the fixed part 4 and the movable part 5, the movable part 5 can move relative to the fixed part 4 to scale the elastic space, a compression spring 6 is arranged between the fixed part 4 and the movable part 5 to resist the movable part 5 from compressing the elastic space, an elastic pad 7 is arranged between the fixed part 4 and the movable part 5 to avoid the compression spring 6, when the wheel set 3 is subjected to external force, it is transmitted to the movable part 5 through the support leg 2 to compress the elastic space, and the compression spring 6 and / or the elastic pad 7 resist the external force to release the elastic space. By setting an elastic space between the fixed part 4 and the movable part 5, and setting two elastic parts, the compression spring 6 and the elastic pad 7, in the elastic space, which cooperate and complement each other, and share the load when one of the elastic parts fails or exceeds the load, the shock absorption failure problem caused by the failure of a single elastic part can be effectively prevented, and the stability and durability of the shock absorption effect can be achieved. The elastic pad 7 is subjected to force on the end surface, and the pressure is borne by surface contact, which can balance the force, effectively avoid tilting or deformation caused by local uneven force, and has the effect of balanced buffering and shock absorption.

[0029] Specifically, the bottom surface of the fixed portion 4 is recessed upward to form a groove 8, and the movable portion 5 adapted thereto is provided at the groove 8, one end of the support leg 2 is connected to the movable portion 5, and the movable portion 5 and the groove 8 enclose the elastic space, and the movable portion 5 can move along the groove 8 to scale the size of the elastic space, and the compression spring 6 is provided in the elastic space, and the upper end of the compression spring 6 abuts against the top surface of the groove 8, and the lower end of the compression spring 6 abuts against the top surface of the movable portion 5, and the elastic pad 7 is provided in the elastic space to avoid the compression spring 6. The movable portion 5 is provided with a guide column 9 extending upward, and a guide hole 10 adapted to the guide column 9 is provided through the fixed portion 4, and the guide column 9 movably passes through the guide hole 10, and the compression spring 6 is sleeved on the outer wall of the guide column 9, and the elastic pad 7 is provided in the elastic space to avoid the guide column 9 and the compression spring 6. A fastening screw 11 is provided on the top of the guide column 9, and the outer diameter of the head of the fastening screw 11 is larger than the inner diameter of the guide hole 10. There are three guide columns 9, which are distributed in a triangular position, so that the force is more balanced, avoiding deformation and damage caused by excessive force on one side, and further improving the stability and durability of the structure.

[0030] More specifically, the support leg 2 is connected to the mounting seat 1 through a first rotating shaft 12, and the support leg 2 is hinged to the wheel set 3 through a second rotating shaft 13. A first axial hole 14 adapted to the lower end of the first rotating shaft 12 is provided in the middle of the top surface of the support leg 2, a circle of concave limiting annular groove 15 is provided at the lower part of the first rotating shaft 12, a through hole 16 is provided from the side wall of the first axial hole 14 to the outer wall of the support leg 2, a limiting pin 17 is provided at the through hole 16, and the limiting pin 17 penetrates the through hole 16 and acts on the limiting annular groove 15. A second axial hole is provided at the lower end of the support leg, and the wheel set 3 includes rollers 18 provided on both sides of the second axial hole, the second rotating shaft 13 penetrates the second axial hole, and the two ends of the second rotating shaft 13 are respectively connected to the rollers 18. The support leg 2 is provided with hollow holes 19 on the circumferential side of the second axial hole, so that it has a certain elastic deformation performance, further improving the shock absorption effect. The top surface of the elastic pad 7 is partially extended upward to be provided with a plurality of buffer protrusions 20, so that the elastic pad 7 has a double buffering and shock absorption effect. When the compression spring 66 is compressed and deformed to a certain extent, the buffer protrusion 20 plays a role first, providing a smaller support effect. When the compression spring 66 combined with the buffer protrusion 20 cannot obtain effective buffering and shock absorption, the elastic pad 7 plays a role as a whole, providing the maximum elastic support effect, and effectively preventing excessive elastic deformation.

[0031] The working principle of this embodiment:

[0032] When the luggage is moving, the shock-absorbing wheel directly acts on the ground. When the ground is uneven, the shock is applied to the roller 18. The roller 18 transmits the vibration to the movable part 5 through the support foot 2. The movable part 5 moves up and down. When the movable part 5 moves up, the guide column 9 moves up along the guide hole 10, and the compression spring 6 is deformed by pressure, providing a certain elastic support and playing a shock-absorbing role.

[0033] When encountering bumpy road conditions, the compression spring 6 deforms greatly. At this time, the buffer protrusion 20 on the top surface of the elastic pad 7 first acts on the top surface of the groove 8 and undergoes elastic deformation, cooperating with the compression spring 6 to provide a certain degree of elastic support.

[0034] When encountering very bumpy road conditions, the elastic deformation of the compression spring 6 and the buffer protrusion 20 can no longer provide sufficient elastic support. At this time, the elastic pad 7 plays a role as a whole, providing the maximum elastic support, effectively preventing the damage of the shock-absorbing wheel caused by the transitional elastic deformation. At the same time, the elastic deformation and reset of the elastic pad 7 are used to achieve a shock-absorbing effect. The end face of the elastic pad 7 is stressed, and the pressure is borne by surface contact, which can balance the force, effectively avoiding the tilt or deformation of the luggage body caused by local uneven force, and has a balanced buffering and shock-absorbing effect.

[0035] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A luggage shock-absorbing wheel, comprising a mounting seat, a support leg and a wheel set, wherein the upper end of the support leg is connected to the mounting seat, and the lower end of the support leg is connected to the wheel set, characterized in that: The mounting seat includes a fixed portion and a movable portion, the upper end of the support leg is connected to the movable portion, an elastic space is arranged between the fixed portion and the movable portion, the movable portion can move relative to the fixed portion to expand and contract the elastic space, an elastic member is arranged between the fixed portion and the movable portion to resist the movable portion from compressing the elastic space, the elastic member includes an elastic pad, when the wheel set is subjected to external force, the force is transmitted to the movable portion through the support leg to compress the elastic space, the end face of the elastic pad is subjected to elastic deformation and resists the external force through elastic resetting to release the elastic space.

2. The luggage shock-absorbing wheel according to claim 1, characterized in that: The elastic member includes a compression spring, a compression spring is arranged between the fixed part and the movable part to resist the movable part from compressing the elastic space, an elastic pad is arranged between the fixed part and the movable part to avoid the position of the compression spring, when the wheel assembly is acted upon by external force, the force is transmitted to the movable part through the supporting foot to compress the elastic space, and the compression spring and / or the elastic pad resist the external force to release the elastic space.

3. The luggage shock-absorbing wheel according to claim 2, characterized in that: The bottom surface of the fixed part is recessed upward to form a groove, and the movable part adapted thereto is provided at the groove, one end of the support leg is connected to the movable part, and the movable part and the groove enclose the elastic space, and the movable part can move along the groove to scale the size of the elastic space, and the compression spring is provided in the elastic space, the upper end of the compression spring is abutted against the top surface of the groove, and the lower end of the compression spring is abutted against the top surface of the movable part, and the elastic pad is provided in the elastic space to avoid the position of the compression spring.

4. The luggage shock-absorbing wheel according to claim 3, characterized in that: The movable part extends upwardly to be provided with a guide column, and the fixed part is penetrated by a guide hole adapted to the guide column. The guide column movably passes through the guide hole, the compression spring is sleeved on the outer wall of the guide column, and the elastic pad is provided in the elastic space avoiding the guide column and the compression spring.

5. The luggage shock-absorbing wheel according to claim 4, characterized in that: A fastening screw is arranged on the top of the guide column, and the outer diameter of the head of the fastening screw is larger than the inner diameter of the guide hole.

6. The luggage shock-absorbing wheel according to claim 4, characterized in that: There are three guide posts, which are distributed in a triangle shape.

7. The luggage shock-absorbing wheel according to claim 1, characterized in that: The support leg is connected to the mounting seat via a first rotating shaft, a first axial hole adapted to the lower end of the first rotating shaft is recessed in the middle of the top surface of the support leg, a circle of limiting concave annular groove is provided at the lower part of the first rotating shaft, a through hole is provided from the side wall of the first axial hole to the outer wall of the support leg, a limiting pin is provided at the through hole, and the limiting pin penetrates the through hole and acts on the limiting concave annular groove.

8. The luggage shock-absorbing wheel according to claim 1, characterized in that: The support leg is hinged to the wheel set via a second rotating shaft, a second axial hole is provided at the lower end of the support leg, the wheel set includes rollers provided on both sides of the second axial hole, the second rotating shaft passes through the second axial hole, and both ends of the second rotating shaft are respectively connected to the rollers.

9. The luggage shock-absorbing wheel according to claim 8, characterized in that: The support leg is provided with a hollow hole on the peripheral side of the second shaft hole.

10. A bag, comprising a bag body and a bag shock-absorbing wheel according to any one of claims 1 to 9, characterized in that: The mounting seat is fixedly arranged on the bottom of the bag body.

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