CN210478292U - Case and bag universal wheel - Google Patents

Abstract

The utility model provides a case and bag universal wheel, hold in the palm including the wheel, the universal shaft is inserted to the bottom that the wheel held in the palm, rolling bearing connects the binary wheel in the bottom of universal shaft, set up at least one screw post on the wheel holds in the palm, the binary wheel includes the single wheel of two symmetries, the single wheel includes wheel hub, wheel hub's periphery cup joints the wheel skin, set up a plurality of mounting grooves in the wheel hub, a plurality of mounting grooves are the annular array and lay, the mounting groove has open opening outwards, the spring is placed to the mounting groove from interior to exterior, the extensible member, the inner suppression spring of extensible member, the outer end is exposed by the opening of mounting groove and is formed flexible end, the surplus clearance between wheel skin and the wheel hub, the flexible end and the wheel skin counterbalance contact of. This case and bag universal wheel utilizes elastic deformation to absorb rigid impact through increasing elastic stretching structure on unsmooth road surface, avoids wheel skin damage, increase of service life. The stability of the box body is kept in the bumping and towing process so as to avoid the occurrence of side turning. The elastic buffer is utilized to play a certain mute effect.

Description

Case and bag universal wheel

Technical Field

The utility model belongs to the technical field of the case and bag, a wheel body structure is related to, especially a case and bag universal wheel.

Background

The existing luggage on the market generally comprises a luggage body, a pull rod and rollers. The bottom of the box body is provided with a bottom support as a connecting piece of the roller and the box body. The function of the pull rod is to pull the box to cause the box to move under the driving of the rollers. The box body is generally provided with a handle above the box body, so that the box body can be lifted through the handle on a road surface where the box is not convenient to push.

The prior wheel body structure has the following problems:

1. the connecting structure of the wheel body and the case is not firm enough, and the wheel body and the case are easy to fall off after being normally used for a period of time, so that the whole case is scrapped.

2. In the dragging process, the solid wheels are in hard contact with the ground, and if the wheels are dragged on an uneven road surface, the abrasion of the surfaces of the wheel bodies is easily caused, so that the service life is shortened.

3. When the tractor is dragged, walking jolts are easily caused on the hollow road surface, and the box body is easily turned over.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems in the prior art, the utility model provides an increase elastic telescopic structure in the wheel body interior to carry out the case and bag universal wheel of deformation buffering to the salient road surface.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a case and bag universal wheel, includes that the wheel holds in the palm, the universal shaft is inserted to the bottom that the wheel held in the palm, the bottom of universal shaft passes through rolling bearing and connects the binary wheel, set up at least one screw post on the wheel holds in the palm, the binary wheel includes the single wheel of two symmetries, the single wheel includes wheel hub, wheel hub's periphery cup joints the hub, set up a plurality of mounting grooves in the wheel hub, a plurality of the mounting groove is the annular array and lays, the mounting groove has the opening that opens outwards, spring, extensible member are placed to the mounting groove from inside to outside, the inner suppression of extensible member the spring, the outer end is exposed by the opening of mounting groove and forms flexible end, remain the clearance between wheel skin and the wheel hub, the flexible end of extensible member with wheel skin looks butt contact.

In this case and bag universal wheel, add the screw post in the wheel holds in the palm, can do benefit to the installation screw, can increase joint strength again. This case and bag universal wheel is rolling in dragging, if meet the uneven ground of pot hole, when the hub contacts convex stone, stone roof pressure hub, hub roof pressure extensible member, extensible member roof pressure spring and the internal contraction, allow hub indent deformation from this to the impact that the buffering stone brought, thereby realize the protection to the hub, play the shock attenuation effect simultaneously, promote the stationarity of dragging, avoid case and bag to turn on one's side, can also play certain silence effect.

In foretell case and bag universal wheel, the screw post includes the cylinder, set up the screw hole in the cylinder, the cylinder periphery is a plurality of strengthening ribs of radial setting. Through increasing a plurality of strengthening ribs to consolidate the screw post, further improve its holding capacity.

In the case universal wheel, the mounting groove is a trapezoidal groove, and the lower bottom of the trapezoidal groove is arranged outwards.

In the case universal wheel, the telescopic piece is a fan-shaped block, the inner end of the fan-shaped block is a plane, the plane is abutted to the spring, the outer end of the fan-shaped block is an arc surface, and the arc surface is abutted to the inner wall of the wheel hub. The outer end of the fan-shaped block body is a telescopic end head, the telescopic end head is arranged to be an arc surface, and the outer end of the fan-shaped block body is better attached to the radian of the wheel hub to provide good supporting performance.

In the case and bag universal wheel, set up on the opening of mounting groove and keep off the edge, set up annular retaining ring on the outer wall of extensible member, annular retaining ring forms spacing contact with keeping off the edge. When the telescopic piece extends to a certain degree, the annular check ring is abutted against the check edge after the outer moving stroke, so that the limiting constraint is formed, and the transition extension or falling of the telescopic piece is avoided.

In the case universal wheel, the wheel support is provided with a wrap angle cavity, and the wrap angle cavity is provided with an arc wrap angle edge. The wrap angle cavity of the wheel support can be used for attaching and coating the bottom angle of the case, so that powerful support and protection are provided.

In foretell case and bag universal wheel, the screw post is located in the cornerite cavity, the screw post is and erects the setting.

Compared with the prior art, this case and bag universal wheel has following advantage:

1. through increasing the screw post, can do benefit to the installation screw, can increase joint strength again to the life of whole case and bag of guarantee.

2. Through increasing elastic telescopic structure, utilize elastic deformation to absorb hard impact on the concave-convex road surface, avoid the damage to the wheel skin, increase of service life.

3. Through increasing elasticity extending structure, keep the stability of box in jolting and dragging to avoid turning on one's side the emergence.

4. The elastic buffer is utilized to play a certain mute effect.

Drawings

Fig. 1 is a schematic perspective view of the universal wheel of the luggage.

Fig. 2 is a schematic diagram of the internal structure of a single wheel in the universal wheel of the luggage.

In the figure, 1, a wheel support; 2. a screw post; 3. a cardan shaft; 4. a hub; 5. a wheel skin; 6. a spring; 7. a telescoping member; 8. annular retaining ring.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, this case and bag universal wheel, hold in the palm 1 including the wheel, universal shaft 3 is inserted to the bottom that the wheel held in the palm 1, the bottom of universal shaft 3 is passed through rolling bearing and is connected the binary wheel, set up at least one screw post 2 on the wheel holds in the palm 1, the binary wheel includes the single wheel of two symmetries, the single wheel includes wheel hub 4, wheel hub 4's periphery cup joints hub 5, set up a plurality of mounting grooves in wheel hub 4, a plurality of mounting grooves are the annular array and lay, the mounting groove has the opening that opens outwards, spring 6 is placed from inside to outside to the mounting groove, extensible member 7, the inner end suppression spring 6 of extensible member 7, the outer end is exposed by the opening of mounting groove and is formed flexible end, the remaining clearance between wheel skin 5 and wheel hub 4, extensible end and the contact of wheel skin 5.

In this case and bag universal wheel, add screw post 2 in wheel holds in the palm 1, can do benefit to the installation screw, can increase joint strength again. This case and bag universal wheel is rolling in dragging, if meet the uneven ground of pot hole, when wheel skin 5 contacts convex stone, stone roof pressure wheel skin 5, wheel skin 5 roof pressure extensible member 7, extensible member 7 roof pressure spring 6 and the internal contraction, allow wheel skin 5 indent deformation from this to the impact that the buffering stone brought, thereby realize the protection to wheel skin 5, play the shock attenuation effect simultaneously, promote the stationarity that drags, avoid case and bag to turn on one's side, can also play certain silence effect.

Screw post 2 includes the cylinder, sets up the screw hole in the cylinder, and the cylinder periphery is radial a plurality of strengthening ribs that set up. Through increasing a plurality of strengthening ribs to consolidate screw column 2, further improve its holding capacity.

The mounting groove is a trapezoidal groove, and the lower bottom of the trapezoidal groove is arranged outwards.

The extensible member 7 is fan-shaped block, and the inner of fan-shaped block is the plane, and the plane offsets with spring 6 and contacts, and the outer end of fan-shaped block is the cambered surface, and the cambered surface offsets with the inner wall of wheel skin 5 and contacts. The outer end of the fan-shaped block body is a telescopic end head, the telescopic end head is arranged to be an arc surface, and the outer end of the fan-shaped block body is better attached to the radian of the wheel hub 5 to provide good supporting performance.

Set up on the opening of mounting groove and keep off the edge, set up annular retaining ring 8 on the outer wall of extensible member 7, annular retaining ring 8 forms spacing contact with keeping off along. When the telescopic member 7 extends to a certain extent, the annular retainer ring 8 is abutted against the retaining edge after the outer moving stroke, so that the limiting constraint is formed, and the telescopic member 7 is prevented from extending outwards or falling off in transition.

The wheel support 1 is provided with a corner wrapping cavity which is provided with an arc-shaped corner wrapping edge. The wrap angle cavity of the wheel support 1 can be used for attaching and coating the bottom angle of the case, so that powerful support and protection are provided.

Screw post 2 is located cornerite cavity, and screw post 2 is and erects the setting.

Compared with the prior art, this case and bag universal wheel has following advantage:

1. through increasing screw post 2, can do benefit to the installation screw, can increase joint strength again to the life of whole case and bag of guarantee.

2. Through increasing elastic telescopic structure, utilize elastic deformation to absorb hard impact on the concave-convex road surface, avoid 5 damages to the wheel skin, increase of service life.

3. Through increasing elasticity extending structure, keep the stability of box in jolting and dragging to avoid turning on one's side the emergence.

4. The elastic buffer is utilized to play a certain mute effect.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the wheel holder 1 is used more herein; a screw post 2; a cardan shaft 3; a hub 4; a wheel skin 5; a spring 6; a telescopic member 7; annular collar 8, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (7)

1. The universal wheel for the luggage comprises a wheel support, wherein a universal shaft is inserted into the bottom of the wheel support, the bottom end of the universal shaft is connected with a double-body wheel through a rotating bearing, the universal wheel is characterized in that at least one screw column is arranged on the wheel support, the double-body wheel comprises two symmetrical single wheels, each single wheel comprises a wheel hub, a wheel skin is sleeved on the periphery of each wheel hub, a plurality of mounting grooves are formed in each wheel hub and are arranged in an annular array mode, each mounting groove is provided with an opening which is opened outwards, a spring and a telescopic piece are placed in each mounting groove from inside to outside, the inner end of each telescopic piece presses the spring, the outer end of each telescopic piece is exposed through the opening of each mounting groove to form a telescopic end, a gap is reserved between each wheel skin and the wheel hub, and the telescopic ends of the telescopic pieces are in abutting.

2. A luggage universal wheel according to claim 1, wherein the screw column comprises a cylinder, a threaded hole is formed in the cylinder, and a plurality of reinforcing ribs are radially arranged on the periphery of the cylinder.

3. A luggage castor according to claim 1, wherein said mounting groove is a trapezoidal groove, and the bottom of said trapezoidal groove is disposed outwardly.

4. A luggage universal wheel according to claim 1, wherein the retractable member is a sector block, the inner end of the sector block is a flat surface, the flat surface is in contact with the spring in an abutting manner, the outer end of the sector block is an arc surface, and the arc surface is in contact with the inner wall of the wheel hub in an abutting manner.

5. A luggage universal wheel according to claim 1, wherein a blocking edge is arranged on the through opening of the mounting groove, and an annular retaining ring is arranged on the outer wall of the telescopic member and is in limit contact with the blocking edge.

6. A luggage castor according to claim 1, wherein said wheel holder has a cornered cavity, said cornered cavity having an arcuate cornered edge.

7. A luggage universal wheel according to claim 6, wherein the screw post is located in the corner cavity, and the screw post is arranged vertically.

Images