CN218921929U

CN218921929U - Shock absorbing wheel set for luggage case

Info

Publication number: CN218921929U
Application number: CN202223402649.5U
Authority: CN
Inventors: 江汉辉
Original assignee: DONGGUAN JIANG SHUN SUITCASES AND HANDBAGS SPARE PARTS CO Ltd
Current assignee: DONGGUAN JIANG SHUN SUITCASES AND HANDBAGS SPARE PARTS CO Ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-04-28
Anticipated expiration: 2032-12-19

Abstract

The utility model relates to the field of shock absorbing wheel sets, in particular to a shock absorbing wheel set for a trunk, wherein a shock absorbing spring is arranged along the axial direction of a rivet shaft, so that shock absorption is directly carried out along the direction vertical to the ground, a shock absorbing shaft assembly is arranged at the lower part of the wheel set, compared with a common wheel set without a shock absorbing function, the upper part of a mounting seat combined with a case shell is unchanged, and when the case is required to be upgraded into the wheel set with the shock absorbing function, the case can be directly switched without changing the case shell. The shock-absorbing function range is wide, and the shock-absorbing effect is achieved from an empty box to the largest load of the box. In addition, the ultra-long shock absorption stroke enables the shock absorption to realize soft and gentle buffering. The thrust bearing structure is adopted, so that the rotation is light and flexible, and the load is large. Adopt wear-resisting structure, the part is difficult for wearing and tearing, guarantees that shock-absorbing structure has very long life. The shock absorbing spring is made of high-quality spring steel and has extremely long fatigue life.

Description

Shock absorbing wheel set for luggage case

Technical Field

The utility model relates to the field of shock absorbing wheel sets, in particular to a shock absorbing wheel set for a trunk.

Background

The luggage case pulley has no shock absorbing effect or has poor shock absorbing effect, articles in the luggage case can be scattered when road conditions jolt, and the pulley is easy to damage. Through design shock attenuation rubber on the wheel, can play certain shock attenuation effect, but rubber deformation range is limited, is difficult to eliminate impact force when the road conditions are complicated.

The wheels are hinged with the luggage case, the wheels are connected with the luggage case by the springs, the springs are mainly stressed to support the luggage case, the better shock absorbing effect than that of shock absorbing rubber can be achieved, but the springs are easy to fall off and the shock absorbing wheels are easy to damage when the luggage case is used on a bumpy road for a long time due to the fact that the two ends of the springs are fixedly connected with the wheels and the luggage case.

Disclosure of Invention

In order to solve the problems, the utility model provides the shock absorbing wheel set for the luggage case, which has wide shock absorbing function range and shock absorbing effect from an empty case to the maximum load of the case. In addition, the ultra-long shock absorption stroke enables the shock absorption to realize soft and gentle buffering; the thrust bearing structure is adopted, so that the rotation is light and flexible, and the load is large.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the shock absorbing wheel set for the trunk comprises a fixed seat and a wheel set bracket, wherein the fixed seat and the wheel set bracket are used for being connected with the trunk, the wheel set bracket is connected with the fixed seat through a shock absorbing shaft assembly, and the shock absorbing shaft assembly comprises a rivet shaft, a shaft sleeve sleeved on the rivet shaft, a shock absorbing spring sleeved on the rivet shaft and a thrust bearing sleeved on the rivet shaft; one end of the rivet shaft is fixedly connected with the fixed seat, the other end of the rivet shaft penetrates through the assembling groove in the wheel set bracket, the shaft sleeve is fixedly sleeved on one end of the rivet shaft, which is close to the fixed seat, the shock absorbing spring is sleeved on the rivet shaft and is positioned in the assembling groove, and the thrust bearing is sleeved on the rivet shaft and is positioned at the bottom of the assembling groove; one end of the shock absorbing spring is propped against the shaft sleeve, and the other end of the shock absorbing spring is propped against the thrust bearing.

Further, the outer side wall of one end of the rivet shaft, which is close to the fixed seat, is provided with a circle of limiting convex ring, and the top of the shaft sleeve is propped against the limiting convex ring under the action of the shock-absorbing spring.

Further, knurling patterns are formed in the positions, corresponding to the shaft sleeves, of the outer side walls of the rivet shafts.

Further, a bracket groove communicated with the assembling groove is further formed in the bottom of the wheel set bracket, and the tail end of the rivet shaft extends into the bracket groove from the assembling groove.

Further, the end of the rivet shaft extending into the bracket slot is fitted with a stop assembly by which the rivet shaft retains the rivet shaft end in the bracket slot.

Further, a first connecting hole and a second connecting hole are formed in the surface of the wheel set support, the first connecting hole is communicated with the opening position of the top of the assembling groove, the second connecting hole is communicated with the support groove, a first wear-resistant nail aligned with the shaft sleeve is assembled in the first connecting hole, and a second wear-resistant nail aligned with the tail end of the rivet shaft is assembled in the second connecting hole.

Further, a dust cover is covered at the opening of the bracket groove.

Further, the outer side wall of the dust cover is provided with a circle of annular flange, and the inner wall of the bracket groove is provided with a circle of annular groove, wherein the dust cover is arranged in the bracket groove, and the annular flange is assembled with the annular groove.

Further, the limiting assembly comprises a bolt and a first gasket, wherein the bolt sequentially penetrates through the first gasket and a screw hole preset by the rivet shaft, and a nut of the bolt abuts against the bottom of the bracket groove.

Further, the stop assembly includes an annular stop flange disposed at the outer edge of the rivet shaft end.

The utility model has the beneficial effects that:

1. the shock absorbing spring is installed along the axis direction of the rivet shaft, so that shock absorption is directly along the direction perpendicular to the ground, the shock absorbing shaft assembly is arranged at the lower part of the wheel set, and the upper part of the wheel set, which is combined with the box shell, is unchanged compared with a common wheel set without shock absorbing function.

2. The shock-absorbing function range is wide, and the shock-absorbing effect is achieved from an empty box to the largest load of the box. In addition, the ultra-long shock absorption stroke enables the shock absorption to realize soft and gentle buffering.

3. The thrust bearing structure is adopted, so that the rotation is light and flexible, and the load is large.

4. Adopt wear-resisting structure, the part is difficult for wearing and tearing, guarantees that shock-absorbing structure has very long life.

5. The shock absorbing spring is made of high-quality spring steel and has extremely long fatigue life.

Drawings

Fig. 1 is a schematic cross-sectional view of the present utility model in a compressed state.

Fig. 2 is a schematic cross-sectional view of the present utility model in an unloaded state.

Fig. 3 is a schematic cross-sectional structure of the wheel set bracket.

Fig. 4 is a schematic structural view of the rivet shaft.

Reference numerals illustrate: the wheel set comprises a fixed seat 1, a wheel set support 2, a fitting groove 20, a support groove 21, an annular groove 211, a first connecting hole 23, a second connecting hole 24, a rivet shaft 3, a limiting convex ring 31, a knurled pattern 32, an annular limiting flange 33, a shaft sleeve 4, a shock absorbing spring 5, a thrust bearing 6, a first wear-resistant nail 7, a second wear-resistant nail 8, a second gasket 12, a bolt 10, a dust cover 11 and a first gasket 9.

Detailed Description

Referring to fig. 1-4, the present utility model relates to a shock absorbing wheel set for a trunk, comprising a fixing seat 1 and a wheel set support 2 for connecting with the trunk, wherein the wheel set support 2 is connected with the fixing seat 1 through a shock absorbing shaft assembly, the shock absorbing shaft assembly comprises a rivet shaft 3, a shaft sleeve 4 sleeved on the rivet shaft 3, a shock absorbing spring 5 sleeved on the rivet shaft 3, and a thrust bearing 6 sleeved on the rivet shaft 3; one end of the rivet shaft 3 is fixedly connected with the fixed seat 1, the other end of the rivet shaft 3 passes through a fitting groove 20 in the wheel set bracket 2, the shaft sleeve 4 is fixedly sleeved on one end of the rivet shaft 3 close to the fixed seat 1, the shock absorbing spring 5 is sleeved on the rivet shaft 3 and positioned in the fitting groove 20, and the thrust bearing 6 is sleeved on the rivet shaft 3 and positioned at the bottom of the fitting groove 20; wherein one end of the shock-absorbing spring 5 is propped against the shaft sleeve 4, and the other end is propped against the thrust bearing 6.

The shock absorbing spring 5 is installed along the axis direction of the rivet shaft 3, so that shock absorption is directly along the direction perpendicular to the ground, the shock absorbing shaft assembly is arranged at the lower part of the wheel set, and the upper part of the wheel set, which is combined with the box shell, is unchanged compared with a common wheel set without shock absorption function.

The shock-absorbing function range is wide, and the shock-absorbing effect is achieved from an empty box to the largest load of the box. In addition, the ultra-long shock absorption stroke enables the shock absorption to realize soft and gentle buffering. The thrust bearing 6 structure is adopted, so that the rotation is light and flexible, and the load is large. Adopt wear-resisting structure, the part is difficult for wearing and tearing, guarantees that shock-absorbing structure has very long life. The shock-absorbing spring 5 is made of high-quality spring steel and has an ultra-long fatigue life.

The thrust bearing composed of the steel balls, the steel ball cover and the gaskets ensures that the bracket rotates lightly and bears larger load.

Further, in order to avoid the upward movement of the rivet shaft 3, a circle of limiting convex ring 31 is arranged on the outer side wall of one end, close to the fixed seat 1, of the rivet shaft 3 of the fixed seat 1, and the top of the shaft sleeve 4 abuts against the limiting convex ring 31 under the action of the shock-absorbing spring 5.

Further, knurling patterns 32 are formed on the outer side wall of the rivet shaft 3 at positions corresponding to the shaft sleeve 4. The region of the rivet shaft 3, which is matched with the shaft sleeve 4, is provided with surface knurling, so that the fastening connection of the shaft sleeve 4 and the rivet shaft 3 cannot loosen.

Further, a bracket groove 21 is formed at the bottom of the wheel set bracket 2 and is communicated with the fitting groove 20, wherein the tail end of the rivet shaft 3 extends from the fitting groove 20 into the bracket groove 21. Further, the end of the rivet shaft 3 extending into the bracket slot 21 is fitted with a stop assembly by which the rivet shaft 3 is passed such that the end of the rivet shaft 3 is held in the bracket slot 21.

Further, the bottom connection of the rivet shaft 3 may be a screw connection, for example, the limiting assembly includes a bolt 10 and a first washer 9, wherein the bolt 10 sequentially passes through the first washer 9 and a preset screw hole of the rivet shaft 3, and a nut of the bolt 10 abuts against the bottom of the bracket slot 21.

Referring to fig. 4, further, the bottom connection of the rivet shaft 3 may also adopt a flip rivet connection, and an annular limit flange 33 is disposed at the outer edge of the bottom end of the rivet shaft 3; i.e. the rivet shaft 3 is fixed in the bracket slot 21 by means of a flip rivet.

Referring to fig. 4, further, a second washer 12 is further included, wherein the top of the rivet shaft is also connected by a turning rivet, and the second washer 12 is pressed by a turning rivet structure corresponding to the top of the rivet shaft 3.

The bottom coupling of the rivet shaft 3 may also be an interference coupling (not shown), and the specific structure of the actual limiting assembly is not limited to the scope of the present utility model, and other specific structures that can keep the end of the rivet shaft 3 in the bracket slot 21 should fall within the protection scope of the present utility model as defined in the claims.

Further, a first connecting hole 23 and a second connecting hole 24 are formed in the surface of the wheel set bracket 2, wherein the first connecting hole 23 is communicated with the top opening position of the fitting groove 20, the second connecting hole 24 is communicated with the bracket groove 21, a first wear-resistant nail 7 aligned with the shaft sleeve 4 is assembled in the first connecting hole 23, and a second wear-resistant nail 8 aligned with the tail end of the rivet shaft 3 is assembled in the second connecting hole 24.

When the universal wheel set is stressed, the direction of the stress of the wheel set support 2 is always in the rolling direction of the wheel, and the maximum stress point of the wheel support is at the two positions of the first wear-resistant nail 7 and the second wear-resistant nail 8, when the wheel support moves up and down relative to the shaft sleeve 4, friction force can be generated, abrasion is caused, and steel wear-resistant nails (poor wear resistance of plastic) are added at the maximum stress position so as to reduce abrasion. Both the first wear resistant nail 7 and the second wear resistant nail 8 are steel material or the like, superior to the wear resistant life of plastic.

Further, a dust cover 11 is covered at the opening of the bracket slot 21, and the dust cover 11 ensures that dust, fiber wires and the like cannot enter the movable area (the bracket slot 21) of the rivet shaft 3.

Further, a circle of annular flange is arranged on the outer side wall of the dust cover 11, a circle of annular groove 211 is arranged on the inner wall of the bracket groove 21, wherein the dust cover 11 is arranged in the bracket groove 21, and the annular flange is assembled with the annular groove 211. In order to ensure a secure fitting of the dust cap 11 in the bracket slot 21, the dust cap 11 is fitted with the annular groove 211 by means of an annular flange, due to vibrations when the wheel set is pushed or pulled over a bumpy road surface.

The above embodiments are merely illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the design of the present utility model.

Claims

1. The utility model provides a suitcase is with wheelset of moving away to avoid possible earthquakes, is including fixing base and the wheelset support that is used for being connected with the suitcase, its characterized in that: the wheel set support is connected with the fixed seat through a shock-absorbing shaft assembly, and the shock-absorbing shaft assembly comprises a rivet shaft, a shaft sleeve sleeved on the rivet shaft, a shock-absorbing spring sleeved on the rivet shaft and a thrust bearing sleeved on the rivet shaft; one end of the rivet shaft is fixedly connected with the fixed seat, the other end of the rivet shaft penetrates through the assembling groove in the wheel set bracket, the shaft sleeve is fixedly sleeved on one end of the rivet shaft, which is close to the fixed seat, the shock absorbing spring is sleeved on the rivet shaft and is positioned in the assembling groove, and the thrust bearing is sleeved on the rivet shaft and is positioned at the bottom of the assembling groove; one end of the shock absorbing spring is propped against the shaft sleeve, and the other end of the shock absorbing spring is propped against the thrust bearing.

2. A shock absorbing wheelset for luggage as claimed in claim 1 wherein: the outer side wall of one end of the rivet shaft, which is close to the fixed seat, is provided with a circle of limiting convex ring, and the top of the shaft sleeve is propped against the limiting convex ring under the action of the shock-absorbing spring.

3. The shock absorbing wheelset for luggage as claimed in claim 1, wherein: the outer side wall of the rivet shaft is provided with knurling patterns at the position corresponding to the shaft sleeve.

4. The shock absorbing wheelset for luggage as claimed in claim 1, wherein: the bottom of the wheel set bracket is also provided with a bracket groove communicated with the assembling groove, wherein the tail end of the rivet shaft extends into the bracket groove from the assembling groove.

5. The shock absorbing wheelset for luggage as claimed in claim 1, wherein: the end of the rivet shaft extending into the bracket slot is fitted with a stop assembly by which the rivet shaft retains the rivet shaft end in the bracket slot.

6. The shock absorbing wheelset for a luggage case according to claim 5, wherein: the surface of the wheel set support is provided with a first connecting hole and a second connecting hole, the first connecting hole is communicated with the opening position of the top of the assembling groove, the second connecting hole is communicated with the support groove, a first wear-resistant nail aligned with the shaft sleeve is assembled in the first connecting hole, and a second wear-resistant nail aligned with the tail end of the rivet shaft is assembled in the second connecting hole.

7. The shock absorbing wheelset for a luggage case according to claim 4 wherein: a dust cover is covered at the opening of the bracket groove.

8. The shock absorbing wheelset for a luggage case according to claim 7, wherein: the outer side wall of the dust cover is provided with a circle of annular flange, the inner wall of the bracket groove is provided with a circle of annular groove, the dust cover is arranged in the bracket groove, and the annular flange is assembled with the annular groove.

9. The shock absorbing wheelset for a luggage case according to claim 5, wherein: the limiting assembly comprises a bolt and a first gasket, wherein the bolt sequentially penetrates through the first gasket and a screw hole preset by a rivet shaft, and a nut of the bolt abuts against the bottom of the bracket groove.

10. The shock absorbing wheelset for a luggage case according to claim 5, wherein: the limiting assembly comprises an annular limiting flange arranged at the outer edge of the tail end of the rivet shaft.