Shock-proof caster of luggage

Abstract

The utility model relates to the technical field of luggage parts, and particularly discloses a luggage shock-proof trundle which comprises a trundle shell used for being connected with a luggage, a trundle frame connected to the bottom of the trundle shell and a rolling wheel rotationally connected with the trundle frame, and the trundle frame is connected with a rotating shaft allowing the rolling wheel to rotate. The rolling wheel comprises a rim, a wheel shaft block connected with the rotating shaft and at least two cushioning parts movably connected between the wheel shaft block and the rim, the cushioning parts are arranged at intervals in the circumferential direction of the axis of the rotating shaft, a spring is connected between every two adjacent cushioning parts in an abutting mode, one end of each spring is connected with the end of the corresponding cushioning part in an abutting mode, and the other end of each spring is connected with the other end of the corresponding cushioning part in an abutting mode. And the other end is propped against the middle part of the cushioning piece. The shock-proof caster of the luggage has the advantage that the shock-proof effect is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of luggage parts technology, in particular to a luggage shock-absorbing caster. BACKGROUND

[0002] In order to facilitate the movement of the luggage, the bottom of the existing luggage is provided with several casters. Although the traditional luggage caster can provide basic movement function, it often cannot effectively alleviate the vibration when facing uneven road surface, bumping or long time use, resulting in damage to the internal items of the luggage and poor user experience.

[0003] In the Chinese patent with publication number CN102579204A, a shock-absorbing caster is disclosed. The caster includes a wheel frame and a roller, the wheel frame is in the shape of a door, and the wheel shaft of the roller is installed at the lower end of the wheel frame. The top surface of the wheel frame is provided with a strip-shaped hole, and a shock-absorbing column passes through the strip-shaped hole; the lower end of the shock-absorbing column is provided with a shock-absorbing column shaft perpendicular to the shock-absorbing column, and the two ends of the shaft are respectively arranged on the two side surfaces of the wheel frame, and the shock-absorbing column shaft is located above the roller; the lower end of the shock-absorbing column is provided with a spring plate, and the plate surface of the spring plate maintains a set angle with the shock-absorbing column; a spring is arranged between the spring plate and the top surface of the wheel frame; the wheel shaft of the roller and the spring are respectively located on the two sides of the shock-absorbing column shaft.

[0004] The above-mentioned shock-absorbing caster can bring certain shock-absorbing effect, but the shock-absorbing effect still has a large room for improvement. UTILITY MODEL CONTENT

[0005] In order to improve the shock-absorbing performance, the present application provides a luggage shock-absorbing caster.

[0006] The present application provides a luggage shock-absorbing caster adopting the following technical scheme:

[0007] A luggage shock-absorbing caster, comprising a wheel shell for connecting with the luggage, a wheel frame connected to the bottom of the wheel shell, and a roller rotationally connected with the wheel frame, the wheel frame is connected with a rotation shaft for the rotation of the roller, the roller comprises a wheel rim, a wheel shaft block connected with the rotation shaft, and a shock-absorbing piece movably connected between the wheel shaft block and the wheel rim, at least two of the shock-absorbing pieces are circumferentially spaced apart around the axis of the rotation shaft, a spring is abutted between each two adjacent shock-absorbing pieces, one end of the spring is abutted with the end part of the shock-absorbing piece, and the other end is abutted with the middle part of the shock-absorbing piece.

[0008] By adopting the above technical scheme, when the caster passes through the bumpy road surface, the shock-absorbing assembly can effectively buffer the impact, the shock-absorbing piece helps to buffer and conduct the impact, and the spring can deform rapidly when subjected to impact, absorb the vibration energy, reduce the impact, and keep the whole system stable during movement, reduce the shaking and bumping of the luggage during movement, and improve the comfort and safety of the items.

[0009] Optionally, the shock-absorbing piece is provided with a fixed column at one end for spring sleeve connection, and a fixed groove is formed in the middle of the shock-absorbing piece for spring insertion, one end of the spring is sleeved on the fixed column, and the other end is inserted into the fixed groove of the adjacent shock-absorbing piece.

[0010] By adopting the above technical scheme, the fixed column and the fixed groove provide a stable mounting end point for the spring, so that the spring can be stably fixed between the shock-absorbing pieces, ensuring the stable connection between the adjacent shock-absorbing pieces, thereby effectively transmitting the force and achieving the overall shock-absorbing effect, and ensuring the continuity and stability of the entire system.

[0011] Optionally, the rim inner periphery is fixedly connected with a fixed seat, the shock-absorbing piece is provided with a groove for the fixed seat insertion, a through hole is formed in the side wall of the groove, a fixed pin is arranged in the through hole, and the fixed seat is provided with a first stroke hole for the fixed pin movement.

[0012] By adopting the above technical scheme, the shock-absorbing piece can rotate around the fixed pin, and when passing through a bumpy road, the shock-absorbing piece can better transmit the vibration received by the caster to the spring, and then disperse the impact through the elastic deformation of the spring, thereby realizing the shock-absorbing function and improving the shock-absorbing effect.

[0013] Optionally, a round corner is formed in the fixed seat near one end of the groove.

[0014] By adopting the above technical scheme, the round corner ensures that the shock-absorbing piece does not interfere with the groove on both sides of the fixed seat when rotating, so that the shock-absorbing piece has a larger rotation angle, thereby ensuring the shock-absorbing effect.

[0015] Optionally, a limiting hole is formed in the axle block, an axle connecting pin is arranged in the limiting hole, and a second stroke hole is formed in the shock-absorbing piece near one end of the fixed column for the axle connecting pin to pass through.

[0016] By adopting the above technical scheme, the limiting hole ensures the stable connection between the axle connecting pin and the axle block, thereby ensuring the normal operation of the roller, and the second stroke hole enables the shock-absorbing piece to move along the second stroke hole, thereby ensuring the compression of the spring under the extrusion of the shock-absorbing piece and improving the shock-absorbing capacity.

[0017] Optionally, a wheel cover is fixedly connected to the outer side of the roller.

[0018] By adopting the above technical scheme, the wheel cover can provide good friction and wear resistance during the movement of the roller, so that the roller can rotate smoothly and is not easy to wear during the movement, thereby prolonging the service life of the roller.

[0019] Optionally, the wheel cover is made of polyurethane material.

[0020] By adopting the technical scheme, the wheel cover made of polyurethane material has better wear resistance and elasticity, thereby adapting to different road surfaces, improving the shock absorption effect, and generating less noise during rolling, being more silent in use, adapting to different scenes, and having better applicability.

[0021] Optionally, the wheel rim comprises an inner wheel ring and an outer wheel ring, a plurality of connecting ribs are fixedly connected between the inner wheel ring and the outer wheel ring, and a plurality of through holes for fixing the wheel cover are formed between adjacent connecting ribs.

[0022] By adopting the technical scheme, the wheel cover is directly formed in a polyurethane pouring manner, and the through holes cooperate with the wheel cover to make the connection of the wheel cover on the outer side of the roller more compact, so as to prevent the wheel cover from being easily separated from the roller and ensure the stability in use.

[0023] Optionally, the width of the inner wheel ring is greater than the width of the outer wheel ring.

[0024] By adopting the technical scheme, the contact area between the inner wheel ring and the wheel cover is effectively increased, the bonding area between the wheel cover and the inner wheel ring is increased, the compact connection between the inner wheel ring and the wheel cover is ensured, the wheel cover is prevented from being easily separated, and the service life is prolonged.

[0025] Optionally, the wheel rim, the wheel shaft block and the shock absorbing piece are made of PA6 material.

[0026] By adopting the technical scheme, PA6 has high tensile strength and bending strength, so that the roller can still maintain structural integrity when bearing a large external force, has good toughness and impact resistance, prevents the parts of the roller from being easily damaged during operation, and ensures the stability in use.

[0027] In summary, the present application has the following beneficial effects:

[0028] 1. By arranging a plurality of fixing seats, shock absorbing pieces and springs in the roller, the impact is effectively conducted, and the impact is absorbed by the plurality of springs, so that the shock absorption effect is improved.

[0029] 2. By using the wheel cover made of polyurethane material, the roller is well protected, and is more wear-resistant and silent during use, so that the service life is effectively improved.

[0030] 3. By using the wheel rim, the wheel shaft block and the shock absorbing piece made of PA6 material, the structural strength of the internal parts is effectively improved, has good toughness and impact resistance, and prevents the parts of the roller from being easily damaged during operation. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a structure schematic view of a luggage shock absorbing caster of an embodiment of the present application;

[0032] Figure 2 is an exploded view of the luggage shockproof caster of the embodiment of the present application;

[0033] Figure 3 is a structural schematic view of the shock absorber of the embodiment of the present application;

[0034] Figure 4 is a sectional view of the luggage shockproof caster of the embodiment of the present application;

[0035] Figure 5 is a side view of the luggage shockproof caster of the embodiment of the present application;

[0036] Figure 6 is a structural schematic view of the wheel rim and the wheel cover of the embodiment of the present application.

[0037] Legend: 1, wheel shell; 2, wheel frame; 21, rotating shaft; 3, roller; 31, wheel shaft block; 311, limiting hole; 312, wheel shaft connecting pin; 32, shock absorber; 321, fixed column; 322, fixed groove; 323, groove; 3231, through hole; 3232, fixed pin; 324, second stroke hole; 33, spring; 34, fixed seat; 341, first stroke hole; 342, round corner; 35, wheel rim; 351, inner wheel ring; 352, outer wheel ring; 353, connecting rib; 354, perforation; 4, wheel cover. DETAILED DESCRIPTION

[0038] The following will be described in detail with reference to the accompanying drawings. Figures 1-6 The present application will be further described in detail.

[0039] The embodiment of the present application discloses a luggage shockproof caster. Referring to Figure 1 , the luggage shockproof caster comprises a wheel shell 1 fixedly connected with a luggage, a wheel frame 2 rotatably connected to the bottom of the wheel shell 1, and a roller 3 rotatably connected with the wheel frame 2, and the wheel frame 2 is provided with a rotating shaft 21 for the roller 3 to rotate. When in use, the wheel shell 1 is installed at the bottom of the four corners of the luggage, so that the roller 3 can rotate at the bottom of the luggage, thereby realizing the function of helping the luggage to move.

[0040] Referring to Figure 2 , Figure 3 and Figure 4 , the roller 3 comprises a wheel rim 35, a wheel shaft block 31 connected with the rotating shaft 21, and a shock absorber 32 movably connected between the wheel shaft block 31 and the wheel rim 35, and the shock absorber 32 is circumferentially and equidistantly provided with at least two along the axis of the transmission shaft, and the two shock absorbers 32 are abutted with springs 33, and the shock absorber 32 is provided with a fixed column 321 for the spring 33 to be sleeved at one end close to the wheel shaft block 31, and a fixed groove 322 is formed in the middle of the shock absorber 32 for the spring 33 to be inserted, and the springs 33 are circumferentially and equidistantly arranged around the axis of the rotating shaft 21, and one end of the spring 33 is sleeved with the fixed column 321, and the other end is inserted into the fixed groove 322 of the adjacent shock absorber 32.

[0041] When the caster moves on a bumpy road, the shock-absorbing piece 32 can help to buffer and conduct the impact to the spring 33 by rotating, and the fixed groove 322 and the fixed column 321 make the spring 33 not move, the shock-absorbing piece 32 rotates to press the spring 33, and the impact force received by the caster is converted into the compression of the spring 33, thereby achieving the effect of reducing vibration and effectively reducing shaking during the movement of the luggage, improving the comfort of use.

[0042] In the embodiments of the application, the shock-absorbing piece 32 and the spring 33 are both provided in three; in other embodiments, the number of shock-absorbing pieces 32 and springs 33 can also be two, four or even more. Compared with the above, the shock-absorbing piece 32 and the spring 33 are provided in three, so that the shock-absorbing piece 32 and the spring 33 can be staggered in a triangular shape, having better stability, and this staggered arrangement effectively improves the shock-absorbing effect.

[0043] Referring to Figure 3 , Figure 4 and Figure 5 , the inner periphery of the wheel rim 35 is fixedly connected with a plurality of fixed seats 34, the shock-absorbing piece 32 is provided with a groove 323 for inserting the fixed seat 34, the side wall of the groove 323 is provided with a through hole 3231, the through hole 3231 is rotatably connected with a fixed pin 3232, the fixed seat 34 is provided with a first stroke hole 341 for moving the fixed pin 3232, the outer wall of the fixed pin 3232 is attached to the inner wall of the through hole 3231, and the length of the first stroke hole 341 is greater than the diameter of the fixed pin 3232. When the caster rolls, the shock-absorbing piece 32 can rotate around the fixed pin 3232 and move along the first stroke hole 341, effectively pushing the spring 33 to shrink into the fixed groove 322, thereby improving the shock-absorbing capacity.

[0044] Referring to Figure 2 , Figure 3 and Figure 4 , the wheel shaft block 31 is provided with a limiting hole 311, the limiting hole 311 is provided with a wheel shaft connecting pin 312, the outer wall of the wheel shaft connecting pin 312 is attached to the inner wall of the limiting hole 311, and the shock-absorbing piece 32 is provided with a second stroke hole 324 near one end of the fixed column 321 for the wheel shaft connecting pin 312 to pass through, and the length of the second stroke hole 324 is greater than the diameter of the wheel shaft connecting pin 312. The stable connection between the limiting hole 311, the wheel shaft connecting pin 312 and the second stroke hole 324 ensures that the caster wheel 3 can rotate stably, and the second stroke hole 324 cooperates with the first stroke hole 341 to enable the shock-absorbing piece 32 to effectively move towards the side close to the spring 33, ensuring that the spring 33 is compressed by the shock-absorbing piece 32, thereby improving the shock-absorbing capacity.

[0045] Referring to Figure 4 , Figure 5The fixed seat 34 is provided with a round corner 342 near one end of the groove 323. When the damping member 32 rotates, the round corner 342 on the fixed seat 34 enables the damping member 32 to have more space to continue to rotate, and the two sides of the fixed seat 34 do not interfere with the inner wall of the groove 323, thereby affecting the rotation of the damping member 32, and ensuring the stable operation of the damping assembly.

[0046] With reference to Figure 6 The outer side of the wheel rim 35 is fixedly connected with a wheel cover 4, and the wheel cover 4 is made of polyurethane. The wheel cover 4 can provide good friction and wear resistance during the movement of the roller 3, and can effectively protect the roller 3, thereby prolonging the service life of the roller 3; the polyurethane material has better wear resistance and elasticity, and generates less noise when rolling, can adapt to different road surfaces, and improve the applicability of the caster.

[0047] With reference to Figure 6 The wheel rim 35 includes an inner ring 351 and an outer ring 352, and a plurality of connecting ribs 353 are fixedly connected between the inner ring 351 and the outer ring 352, and a plurality of through holes 354 for fixing the wheel cover 4 are formed between adjacent connecting ribs 353. The wheel cover 4 is directly formed on the surface of the roller 3 in a polyurethane pouring manner, and the through holes 354 enable the wheel covers 4 on both sides of the inner ring 351 to communicate through the through holes 354, so that the wheel cover 4 can effectively wrap the outer ring 352, and the connection is more compact, ensuring that the wheel cover 4 is not easy to fall off.

[0048] With reference to Figure 6 The width of the inner ring 351 is greater than the width of the outer ring 352. The contact area between the inner ring 351 and the wheel cover 4 is effectively increased, the adhesion area between the wheel cover 4 and the inner ring 351 is increased, thereby ensuring the close connection between the inner ring 351 and the wheel cover 4, the wheel cover 4 is not easy to fall off, and the service life is prolonged.

[0049] With reference to Figure 6 The wheel rim 35, the axle block 31 and the damping member 32 are all made of PA6 material. PA6 has high tensile strength and bending strength, so that the roller 3 can still maintain structural integrity when bearing a large external force, has good toughness and impact resistance, ensures that the damping assembly is not easy to be damaged during operation, and ensures the stability of use.

[0050] The implementation principle of the luggage damping caster is that when the caster passes through a bumpy road, the road impacts the caster, the damping member 32 moves along the first stroke hole 341 and the second stroke hole 324 and rotates, the damping member 32 transmits the impact to the spring 33, the spring 33 converts the kinetic energy brought by the impact into potential energy, so that the spring 33 is compressed to effectively absorb the vibration and reduce the impact. The wheel cover 4 made of polyurethane material effectively improves the wear resistance and silent effect of the roller 3, and prolongs the service life of the roller 3.

[0051] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A shock-absorbing caster for luggage, comprising a wheel housing (1) for connecting with the luggage, a wheel frame (2) connected to the bottom of the wheel housing (1), and a roller (3) rotatably connected with the wheel frame (2), characterized in that: The wheel frame (2) is connected with a rotating shaft (21) for rotating the roller (3), the roller (3) comprises a rim (35), a wheel shaft block (31) connected with the rotating shaft (21), and a shock absorbing element (32) movably connected between the wheel shaft block (31) and the rim (35), at least two of the shock absorbing element (32) are circumferentially spaced apart around the axis of the rotating shaft (21), and a spring (33) is abutted between each two adjacent shock absorbing elements (32), one end of the spring (33) is abutted with the end of the shock absorbing element (32), and the other end is abutted with the middle part of the shock absorbing element (32).

2. The luggage shock-absorbing caster according to claim 1, characterized in that: One end of the shock absorbing element (32) is provided with a fixed column (321) for sleeving the spring (33), the middle part of the shock absorbing element (32) is provided with a fixed slot (322) for inserting the spring (33), one end of the spring (33) is sleeved in the fixed column (321), and the other end is inserted into the fixed slot (322) of the adjacent shock absorbing element (32).

3. The luggage shock-absorbing caster according to claim 1, characterized in that: The inner periphery of the rim (35) is fixedly connected with a fixed seat (34), the shock absorbing element (32) is provided with a groove (323) for inserting the fixed seat (34), the side wall of the groove (323) is provided with a through hole (3231), the through hole (3231) is provided with a fixed pin (3232), and the fixed seat (34) is provided with a first stroke hole (341) for moving the fixed pin (3232).

4. The shock absorbing caster wheel of claim 3, wherein: One end of the fixed seat (34) close to the groove (323) is provided with a round corner (342).

5. The shock absorbing caster wheel of claim 1, wherein: The wheel shaft block (31) is provided with a limiting hole (311), the limiting hole (311) is provided with a wheel shaft connecting pin (312), and one end of the shock absorbing element (32) close to the fixed column (321) is provided with a second stroke hole (324) for passing through the wheel shaft connecting pin (312).

6. The shock absorbing caster wheel of claim 1, wherein: The outer side of the rim (35) is fixedly connected with a wheel skin (4).

7. The shock absorbing caster wheel of claim 6, wherein: The wheel skin (4) is made of polyurethane material.

8. The shock absorbing caster wheel of claim 7, wherein: The rim (35) comprises an inner ring (351) and an outer ring (352), a plurality of connecting ribs (353) are fixedly connected between the inner ring (351) and the outer ring (352), a plurality of through holes (354) for fixing the wheel skin (4) are formed between adjacent connecting ribs (353).

9. The luggage shock-absorbing caster according to claim 8, characterized in that: The width of the inner ring (351) is greater than the width of the outer ring (352).

10. The shock absorbing caster wheel of claim 1, wherein: The rim (35), the wheel shaft block (31) and the shock absorbing element (32) are all made of PA6 material.

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