A caster with a shock-absorbing function

Abstract

The present invention discloses a caster with a shock-absorbing function, which comprises a fixed seat, a clamping seat, a clamping rod, a wheel seat, a shock-absorbing device and two wheels; the rear end of the clamping seat is rotatably connected to the fixed seat through the clamping rod; a first hollow structure penetrating through the upper and lower ends is arranged at the front end of the clamping seat; the lower end of the wheel seat is connected to the two wheels through a rotating shaft, the upper end of the wheel seat is slidably inserted into the first hollow structure, and a second hollow structure with an upper opening is arranged at the upper end of the wheel seat; the shock-absorbing device comprises an upper clamping part, a lower clamping part and an elastic body; the elastic body is made of rubber or TPE; the elastic body is installed in the second hollow structure; the upper end of the elastic body is fixedly connected to the upper end of the wheel seat through the upper clamping part, the lower end of the elastic body is connected to the wheel seat through the lower clamping part, strip-shaped sliding holes corresponding to the lower clamping part are arranged on both the left and right sides of the wheel seat, and both ends of the lower clamping part respectively penetrate through the two strip-shaped sliding holes and are fixedly connected to the clamping seat. The shock-absorbing effect of the present invention is good.

Description

Technical Field

[0001] The present invention relates to the technical field of casters, and more particularly to a caster with a shock-absorbing function. Background Art

[0002] Suitcases have long become essential luggage for people's short-term or long-term trips. Due to different sizes and capacities, the number or volume of items that a suitcase can hold varies. Since casters are generally provided on the suitcase, people can move the suitcase at any time by pushing or pulling.

[0003] Currently, many casters for installing on suitcases in the market have a shock-absorbing device. These shock-absorbing devices generally use the telescopic force of a spring (such as a metal spring) to achieve the shock-absorbing effect. However, such casters using springs to achieve the shock-absorbing effect still have certain disadvantages. For example: 1. The service life of the spring is not long enough, reducing the service life of the caster; 2. The shock-absorbing effect is not good enough.

[0004] Therefore, it is necessary to improve the existing technology. Summary of the Invention

[0005] Aiming at the above problems of the existing technology, the purpose of the present invention is to provide a caster with a shock-absorbing function, which has the advantages of simple and reasonable structure, good shock-absorbing effect, low noise, long service life, and simple maintenance.

[0006] To achieve the above purpose, the technical solution of the present invention is:

[0007] A caster with a shock-absorbing function includes a fixed seat, a clamping seat, a clamping rod, a wheel seat, a shock-absorbing device, and two wheels; the rear end of the clamping seat is rotatably connected to the fixed seat through the clamping rod; a first hollow structure penetrating through the upper and lower ends is provided at the front end of the clamping seat; the lower end of the wheel seat is connected to the two wheels through a rotating shaft, the upper end of the wheel seat is slidably inserted into the first hollow structure, and a second hollow structure with an open upper end is provided at the upper end of the wheel seat; the shock-absorbing device includes an upper clamping member, a lower clamping member, and an elastic body; the elastic body is made of rubber or TPE; the elastic body is installed in the second hollow structure; the upper end of the elastic body is fixedly connected to the upper end of the wheel seat through the upper clamping member, the lower end of the elastic body is connected to the wheel seat through the lower clamping member, strip-shaped sliding holes for the lower clamping member to slide up and down are provided on both the left and right sides of the wheel seat, and both ends of the lower clamping member respectively pass through the two strip-shaped sliding holes and are fixedly connected to the clamping seat.

[0008] As a specific embodiment, a vertically extending guiding groove is provided on the outer wall of the upper end of the wheel seat; a guiding strip corresponding to and cooperating with the guiding groove is provided at the edge of the first hollow structure.

[0009] Furthermore, there are two guiding grooves, and the two guiding grooves are symmetrically arranged; correspondingly, there are also two guiding bars.

[0010] As a specific embodiment, the wheel seat includes a connecting portion and a plugging portion connected in sequence from bottom to top. The connecting portion connects the two wheels through the rotating shaft. The plugging portion is slidably inserted into the first hollow structure, and the shape and size of the plugging portion match those of the first hollow structure; the second hollow structure is arranged on the plugging portion, and the strip-shaped sliding hole is also arranged on the plugging portion.

[0011] Furthermore, at the upper end of the elastic body, there is a first through hole for passing through the middle of the upper clamping member; on the left and right sides of the upper end of the plugging portion, there is respectively a second through hole for passing through the end of the upper clamping member; at the lower end of the elastic body, there is a third through hole for passing through the middle of the lower clamping member; on the left and right sides of the front end of the clamping seat, there is respectively a fourth through hole for passing through the end of the lower clamping member.

[0012] Furthermore, on the outer wall of the plugging portion, there are four rounded corners that are symmetrically arranged in pairs, and at the position of the edge of the first hollow structure corresponding to the rounded corners, there are arc-shaped portions corresponding to the rounded corners.

[0013] As a specific embodiment, the elastic body is solid.

[0014] As a specific embodiment, on the outer wall of the elastic body, there are reinforcing ribs integrally formed with the elastic body.

[0015] Furthermore, there are multiple reinforcing ribs, and the multiple reinforcing ribs are distributed on both sides of the elastic body.

[0016] As a specific embodiment, both the upper clamping member and the lower clamping member are pins.

[0017] The beneficial effects of the present invention are as follows:

[0018] (1) The structure of the present invention is simple and reasonable. By providing an elastomer made of rubber or TPE with good restorability, it can achieve good shock absorption effects. Moreover, the elastomer made of rubber or TPE has a long service life, which also improves the service life of the present invention. Since the upper end of the elastomer is connected to the upper clamping member, and the lower end is connected to the lower clamping member, and both ends of the lower clamping member are connected to the clamping seat, when the wheel seat slides upward, it can pull the elastomer to deform upward. When the elastomer returns to its original state, it drives the lower clamping member to reset, that is, through the stretching and contraction of the elastomer, good shock absorption effects can be achieved. At the same time, the overall structure of the present invention is simple. During use, the upper end of the wheel seat is slidably inserted into the first hollow structure, and combined with the use of the elastomer, the wheel seat has high stability during sliding, and the overall noise of the caster is small.

[0019] (2) By providing a guide groove and a guide bar, the present invention can improve the stability of the wheel seat during sliding and, to a certain extent, also improve the shock absorption effect.

[0020] (3) By dividing the wheel seat into a connecting part and a plugging part, the present invention makes it more convenient to install the wheel seat and the clamping seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is the overall structure schematic diagram of the present invention;

[0022] Figure 2 is the exploded view of the present invention;

[0023] Figure 3 is the longitudinal sectional view of the present invention;

[0024] Figure 4 is the partial structure schematic diagram of the present invention;

[0025] Figure 5 is the structure schematic diagram of the elastomer of the present invention.

[0026] REFERENCE NUMERALS:

[0027] 1. Fixed seat; 2. Clamping seat; 21. First hollow structure; 211. Guide bar; 3. Clamping rod; 4. Wheel seat; 5. Wheel; 6. Rotating shaft; 41. Connecting part; 42. Plugging part; 421. Second hollow structure; 422. Strip-shaped sliding hole; 423. Guide groove; 7. Upper clamping member; 8. Lower clamping member; 9. Elastomer; 10. First through hole; 11. Second through hole; 12. Third through hole; 13. Fourth through hole; 14. Rounded corner. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following further elaborates on the invention in combination with the drawings and specific embodiments. The following description is only exemplary and does not limit the protection scope of the invention.

[0029] As shown Figures 1 - 5 in the figure, a caster with a shock absorption function includes a fixed seat 1, a clamping seat 2, a clamping rod 3, a wheel seat 4, a shock absorption device and two wheels 5; the rear end of the clamping seat 2 is rotatably connected to the fixed seat 1 through the clamping rod 3, that is, both the clamping seat 2 and the fixed seat 1 are rotatable; a first hollow structure 21 penetrating through the upper and lower ends is provided at the front end of the clamping seat 2; the lower end of the wheel seat 4 is connected to the two wheels 5 through a rotating shaft 6, and the upper end of the wheel seat 4 is slidably inserted into the first hollow structure 21, and a second hollow structure 421 with an open upper end is provided at the upper end of the wheel seat 4; the shock absorption device includes an upper clamping member 7, a lower clamping member 8 and an elastic body 9; the elastic body 9 is made of rubber or TPE; the elastic body 9 is installed in the second hollow structure 421; the upper end of the elastic body 9 is fixedly connected to the upper end of the wheel seat 4 through the upper clamping member 7, the lower end of the elastic body 9 is connected to the wheel seat 4 through the lower clamping member 8, strip-shaped sliding holes 422 for the lower clamping member 8 to slide up and down are provided on both the left and right sides of the wheel seat 4, and both ends of the lower clamping member 8 respectively pass through the two strip-shaped sliding holes 422 and are fixedly connected to the clamping seat 2. Preferably, the elastic body 9 is solid, so as to ensure that the elastic body 9 is not easily damaged and can provide sufficient elastic force. The structure of the present invention is simple and reasonable. By setting the elastic body 9 made of rubber or TPE with good restorability, it can achieve a good shock absorption effect, and the elastic body 9 made of rubber or TPE has a long service life, which also improves the service life of the present invention; since the upper end of the elastic body 9 is connected to the upper clamping member 7 and the lower end is connected to the lower clamping member 8 and both ends of the lower clamping member 8 are connected to the clamping seat 2, when the wheel seat 4 slides upward, it can pull the elastic body 9 to deform upward, and when the elastic body 9 returns to its original state, it drives the lower clamping member 8 to reset, that is, a good shock absorption effect is achieved through the stretching and contraction of the elastic body 9; at the same time, the overall structure of the present invention is simple. During use, the upper end of the wheel seat 4 is slidably inserted into the first hollow structure 21, and combined with the use of the elastic body 9, the stability of the wheel seat 4 during sliding is high, and the overall noise of the caster is small.

[0030] Among them, as Figure 2 shown in the figure, a vertically extending guide groove 423 is provided on the outer wall of the upper end of the wheel seat 4; a guide strip 211 corresponding to the guide groove 423 is provided at the edge of the first hollow structure 21. By providing the guide groove 423 and the guide strip 211, it can well help the wheel seat 4 to slide, make the movement of the wheel seat 4 more stable, and not easily deviate from the preset route.

[0031] Preferably, two guide grooves 423 are provided and the two guide grooves 423 are symmetrically arranged; two corresponding guide strips 211 are also provided. Through the above settings, the stability of the wheel seat 4 during movement can be further improved.

[0032] As Figure 2As shown in the figure, the wheel seat 4 includes a connecting portion 41 and a plugging portion 42 connected successively from bottom to top. The connecting portion 41 connects two wheels 5 through a rotating shaft 6. The plugging portion 42 is slidably inserted into the first hollow structure 21, and the shape and size of the plugging portion 42 match those of the first hollow structure 21. A second hollow structure 421 is provided on the plugging portion 42, and a strip-shaped sliding hole 422 is also provided on the plugging portion 42. Specifically, the width of the connecting portion 41 is greater than that of the plugging portion 42. Specifically, the connecting portion 41 and the plugging portion 42 are integrally formed. Through the above settings, it is more convenient to slidably insert the plugging portion 42 into the first hollow structure 21 and the sliding stability of the wheel seat 4 is improved. At the same time, it is also easier to produce and install the present invention, that is, the assembly efficiency is improved.

[0033] As Figure 2 shown, a first through hole 10 for passing through the middle of the upper clip 7 is provided at the upper end of the elastomer 9; a second through hole 11 for passing through the ends of the upper clip 7 is provided on the left and right sides of the upper end of the plugging portion 42 respectively; a third through hole 12 for passing through the middle of the lower clip 8 is provided at the lower end of the elastomer 9; a fourth through hole 13 for passing through the ends of the lower clip 8 is provided on the left and right sides of the front end of the card seat 2 respectively. Through the above settings, it is convenient to install the upper clip 7, the lower clip 8 and the elastomer 9.

[0034] Four symmetrically arranged rounded corners 14 are provided on the outer wall of the plugging portion 42, and an arc portion corresponding to the rounded corners 14 is provided at the position of the first hollow structure 21 corresponding to the rounded corners 14. Through the above settings, the sliding stability of the plugging portion 42 is improved to a certain extent.

[0035] As Figure 5 shown, reinforcing ribs integrally formed with the elastomer 9 are provided on the outer wall of the elastomer 9. Specifically, there are multiple reinforcing ribs and the multiple reinforcing ribs are distributed on both sides of the elastomer 9. By providing the reinforcing ribs, the service life of the elastomer 9 can be improved and the elastic force of the elastomer 9 can be made large enough.

[0036] In this embodiment, both the upper clip 7 and the lower clip 8 are pins, so that the upper clip 7 and the lower clip 8 can be more easily installed and fixed. When fixing, only a fixing member needs to be connected to the free end of the pin.

[0037] During the use of the present invention, when the wheel 5 encounters bumps, it drives the wheel seat 4 to move upward, that is, the plugging portion 42 moves upward along the first hollow structure 21. Since both ends of the lower clip 8 are fixed to the card seat 2 and the lower clip 8 is inserted into the strip-shaped sliding hole 422, and both ends of the upper clip 7 are fixed to the plugging portion 42, therefore, during the upward sliding process of the plugging portion 42, the upper clip 7 is driven to slide, and the upper clip 7 drives the elastomer 9 to stretch upward; then when the elastomer 9 contracts, it drives the wheel seat 4 to reset, thus achieving the shock absorption effect.

[0038] In summary, the present invention has the advantages of simple and reasonable structure, good shock absorption effect, low noise, long service life, and simple inspection and maintenance.

[0039] The present invention is not limited to the above embodiments. If various modifications or deformations of the present invention do not depart from the spirit and scope of the present invention, and if these modifications and deformations fall within the scope of the claims of the present invention and equivalent technical scope, then the present invention also intends to include these modifications and deformations.

Claims

1. A caster with shock-absorbing function, characterized in that: It includes a fixed seat, a clamping seat, a clamping rod, a wheel seat, a shock-absorbing device and two wheels; the rear end of the clamping seat is rotatably connected to the fixed seat through the clamping rod; a first hollow structure penetrating the upper and lower ends is provided at the front end of the clamping seat; the lower end of the wheel seat is connected to the two wheels through a rotating shaft, and the upper end of the wheel seat is slidably inserted into the first hollow structure, and a second hollow structure with an upper opening is provided at the upper end of the wheel seat; the shock-absorbing device includes an upper clamping part, a lower clamping part and an elastic body; the elastic body is made of rubber or TPE; the elastic body is installed in the second hollow structure; the upper end of the elastic body is fixedly connected to the upper end of the wheel seat through the upper clamping part, the lower end of the elastic body is connected to the wheel seat through the lower clamping part, strip-shaped sliding holes for the lower clamping part to slide up and down are provided on both the left and right sides of the wheel seat, and the two ends of the lower clamping part respectively pass through the two strip-shaped sliding holes and are fixedly connected to the clamping seat; vertical guide grooves are provided on the outer wall of the upper end of the wheel seat; guide strips corresponding to the guide grooves are provided at the edge of the first hollow structure; two guide grooves are provided and the two guide grooves are symmetrically arranged; two corresponding guide strips are also provided; the wheel seat includes a connecting part and a plugging part connected in sequence from bottom to top, the connecting part is connected to the two wheels through the rotating shaft, the plugging part is slidably inserted into the first hollow structure, and the shape and size of the plugging part match the shape and size of the first hollow structure; the second hollow structure is arranged on the plugging part, and the strip-shaped sliding holes are also arranged on the plugging part; a first through hole for passing through the middle of the upper clamping part is provided at the upper end of the elastic body; a second through hole for passing through the end of the upper clamping part is respectively provided on the left and right sides of the upper end of the plugging part; a third through hole for passing through the middle of the lower clamping part is provided at the lower end of the elastic body; a fourth through hole for passing through the end of the lower clamping part is respectively provided on the left and right sides of the front end of the clamping seat; four pairwise symmetric rounded corners are provided on the outer wall of the plugging part, and arc-shaped parts corresponding to the rounded corners are provided at the edge of the first hollow structure corresponding to the rounded corners.

2. The caster with shock-absorbing function according to claim 1, characterized in that: The elastic body is solid.

3. The caster with shock-absorbing function according to claim 1, characterized in that: Reinforcing ribs integrally formed with the elastic body are provided on the outer wall of the elastic body.

4. The caster with shock-absorbing function according to claim 3, characterized in that: Multiple reinforcing ribs are provided and the multiple reinforcing ribs are distributed on both sides of the elastic body.

5. The caster with shock-absorbing function according to claim 1, characterized in that: Both the upper clamping part and the lower clamping part are pins.

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