CN110089818B

CN110089818B - Luggage case with retractable wheels

Info

Publication number: CN110089818B
Application number: CN201910296450.2A
Authority: CN
Inventors: 孙蓓蓓; 赵鹏; 周阳; 黄瑞
Original assignee: Southeast University
Current assignee: Southeast University
Priority date: 2019-04-13
Filing date: 2019-04-13
Publication date: 2021-06-11
Anticipated expiration: 2039-04-13
Also published as: CN110089818A

Abstract

The invention discloses a luggage case with wheels capable of being retracted and absorbing vibration, which comprises a case body, wherein a pull rod is arranged at the upper end of the case body, a wheel part is arranged at the lower end of the case body, the wheel part comprises an upper connecting rod, a lower connecting rod, a shaft and two wheels, the upper connecting rod is arranged above the lower connecting rod, the lower end surface of the upper connecting rod is tangent to the upper end surface of the lower connecting rod, mounting grooves which are arranged in a penetrating way are formed in the inner sides of the upper connecting rod and the lower connecting rod, the shaft is arranged in the mounting grooves, the upper end of the shaft is connected with the upper connecting; the upper connecting rod is provided with a shaft hole corresponding to the shaft, the outer side of the shaft is provided with a limiting bulge, the top end of the inner side of the lower connecting rod is provided with an inward limiting bulge, and the lower part of the lower connecting rod is connected with the two wheels through a bearing; the whole wheel component has compact structure, good anti-moving and vibration damping capabilities, and can safely and reliably work on uneven roads and moving vehicles.

Description

Luggage case with retractable wheels

Technical Field

The invention relates to the technical field of luggage cases, in particular to a luggage case with retractable wheels.

Background

Luggage, also known as traveling case and trolley case, is a type of luggage that is carried when going out for placing articles. Usually, the luggage case is used for placing clothes, personal care products and souvenirs required by the journey. The size of the luggage case on the market is generally specified as a standard according to the sizes of a carry-on case (carry-on luggage) and a consignment case (carry-out luggage) of an airline company (international air transport association).

However, the sliding rollers at the bottom of the traditional trunk are generally fixed on the surface of the trunk and cannot be stretched or retracted, the sliding rollers can easily slide on public transport means such as subways, and meanwhile, noise and vibration are large when the sliding rollers walk on blind roads or other uneven road surfaces on two sides of a road. The folding wheel in the prior invention patent has a complex structure, and the side surface of the luggage case is unfolded and can be used only by inclining the luggage case by a large angle; the suitcase with the wheels folded by the hinges is inconvenient to use, low in connection strength, large in occupied space and not attractive.

Disclosure of Invention

The invention aims to provide a luggage case which is suitable for being used in public transport means such as subways and the like and uneven roads, can be folded with wheels according to requirements to prevent the luggage case from moving, has the function of preventing vibration from being transmitted to a case body from the wheels, and is simple in structure.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a luggage case with wheels capable of being folded comprises a case body, wherein a pull rod is arranged at the upper end of the case body, a wheel part is arranged at the lower end of the case body, the wheel part comprises an upper connecting rod, a lower connecting rod, a shaft and two wheels, the upper connecting rod is arranged above the lower connecting rod, the lower end face of the upper connecting rod is tangent to the upper end face of the lower connecting rod, mounting grooves which are arranged in a penetrating mode are formed in the inner sides of the upper connecting rod and the lower connecting rod, the shaft is arranged in the mounting grooves, the upper end of the shaft is connected with the upper connecting rod through pins, and the lower end; the outer side of the shaft is provided with a limiting bulge, the top end of the inner side of the lower connecting rod is provided with an inward limiting bulge, and the lower part of the lower connecting rod is connected with the two wheels through a bearing; and the upper connecting rod is provided with a shaft hole corresponding to the shaft.

As an improvement of the invention, through holes corresponding to the pins are arranged on the shaft and the upper connecting rod, and the pins penetrate through the upper connecting rod and the shaft.

As an improvement of the invention, the outer side surface of the lower connecting rod is provided with a rubber pad, the rubber pad is arranged on the outer side of the lower connecting rod, and the shaft hole is arranged on the upper connecting rod.

As a modification of the present invention, the number of the limiting protrusions is at least 2.

As a modification of the present invention, the limit projection is provided at the lower half section of the shaft.

As an improvement of the invention, the outer shell of the box body is made of ABS plastic, and a sponge lining is arranged in the box body.

As a refinement of the invention, the wheel is a pneumatic rubber tire.

Compared with the prior art, the invention has the following beneficial effects because the technology is adopted:

the invention discloses a luggage case with retractable wheels, which can realize the adjustment of the positions of the wheels and can fold the wheels at any time so as to prevent the luggage case from moving when taking public transport means such as subways, buses and the like and ensure the riding safety; the whole wheel component has compact structure, good anti-moving and vibration damping capabilities, and can safely and reliably work on uneven roads and moving vehicles.

Drawings

FIG. 1 is a schematic diagram of a wheel stowable luggage case;

FIG. 2 is a schematic view of a rubber mat;

FIG. 3 is a schematic view of the wheel of the present invention when stowed;

FIG. 4 is a schematic view of the wheel of an embodiment of the present invention shown retracted;

figure 5 is a cross-sectional view of the wheel assembly;

FIG. 6 is a cross-sectional view A-A' of FIG. 5;

FIG. 7 is a schematic view of the construction of the shaft hole;

in the figure: 1. the device comprises a box body, 2, a pull rod, 3, a wheel component, 4, an upper connecting rod, 5, a rubber pad, 6, a pin, 7, a lower connecting rod, 8, a wheel, 9, a shaft, 10, an inward limiting bulge, 11, a limiting bulge, 12, a spring, 13, a shaft hole, 14, a mounting groove, 15, a through hole, 16 and a bearing.

Detailed Description

The following more detailed description, taken in conjunction with the accompanying drawings and specific embodiments, should be understood to be illustrative of the invention only and not limiting in scope, as various equivalent modifications of the invention will become apparent to those skilled in the art upon reading the present disclosure and are intended to fall within the scope of the appended claims.

A luggage case with wheels capable of being folded comprises a case body 1, wherein a pull rod 2 is arranged at the upper end of the case body 1, a wheel component 3 is arranged at the lower end of the case body 1, the wheel component 3 comprises an upper connecting rod 4, a lower connecting rod 7, a shaft 9 and two wheels 8, the upper connecting rod 4 is arranged above the lower connecting rod 7, the lower end face of the upper connecting rod 4 is tangent to the upper end face of the lower connecting rod 7, mounting grooves 14 penetrating through the upper connecting rod 4 and the lower connecting rod 7 are formed in the inner sides of the upper connecting rod 4 and the lower connecting rod 7, the shaft 9 is arranged in the mounting grooves 14, the upper end of the shaft 9 is connected with the upper connecting rod 4 through a pin 6, and; a limiting bulge 11 is arranged on the outer side of the shaft 9, an inward limiting bulge 10 is arranged at the top end of the inner side of the lower connecting rod 7, and the lower part of the lower connecting rod 7 is connected with the two wheels 8 through a bearing 16; the upper connecting rod 4 is provided with a shaft hole 13 corresponding to the shaft 9.

The shaft 9 and the upper connecting rod 4 are both provided with through holes 15 corresponding to the pins 6, and the pins 6 penetrate between the upper connecting rod 4 and the shaft 9.

The outer side face of the lower connecting rod 7 is provided with a rubber pad 5, and the rubber pad 5 is arranged on the lower connecting rod 7.

The number of the limiting protrusions 11 is at least 2.

The limiting protrusion 11 is arranged on the lower half section of the shaft 9.

The shell of the box body 1 is made of ABS plastic, and a sponge lining is arranged in the box body 1.

The wheel 8 is a pneumatic rubber tire.

As shown in fig. 5, in the luggage case with retractable wheels disclosed in the embodiments of the present invention, the spring 12 in the lower connecting rod 7 is always in a stretched state, and when the wheels 8 are not retracted, due to the limitation of the tangent planes of the upper connecting rod 4 and the lower connecting rod 7, the upper connecting rod 4 can be firmly connected with the lower connecting rod 7, so that the luggage case can safely and reliably travel.

As shown in fig. 3, when the wheels 8 need to be folded on the public transport means, the wheels 8 can be stepped on by feet, the trunk body 1 of the luggage case can be lifted upwards by hands, the upper connecting rod 4 and the lower connecting rod 7 can be separated, and because of the limiting bulge 11 on the shaft 9, when the distance between the upper connecting rod 4 and the lower connecting rod 7 is too large, the limiting bulge 11 will touch the inward limiting bulge 10 on the lower connecting rod 7, so that the wheels 8 can not be separated from the luggage case; at this point the luggage case is pushed forward by hand, the upper link 4 is rotated by the pin 6 and the shaft 9 is rotated in the shaft hole 13, the wheels 8 are turned to the side of the luggage case and the back rubber pad 5 is in contact with the floor of the vehicle. Because the friction coefficient between the rubber and the ground is larger, the luggage case only needs to arrange two wheels at one side with a handle into the wheel component 3 structure in the embodiment. Fig. 4 is a schematic view of the wheel after retraction.

The wheels 8 of the luggage case are inflatable rubber tires, so that vibration and noise generated when the traditional hard plastic wheels are in contact with the ground can be greatly reduced during use, meanwhile, the lower connecting rods 7 are made of rubber materials, the low-frequency large-amplitude vibration of the wheels can be prevented from being transmitted to the luggage case body 1, and meanwhile, objects in the luggage case are further protected by the sponge linings in the luggage case.

Claims

1. A luggage case with wheels capable of being retracted, characterized in that: the wheel type garbage bin comprises a bin body (1), wherein a pull rod (2) is arranged at the upper end of the bin body (1), a wheel part (3) is arranged at the lower end of the bin body (1), the wheel part (3) comprises an upper connecting rod (4), a lower connecting rod (7), a shaft (9) and two wheels (8), the upper connecting rod (4) is arranged above the lower connecting rod (7), the lower end face of the upper connecting rod (4) is tangent to the upper end face of the lower connecting rod (7), mounting grooves (14) which are arranged in a penetrating mode are formed in the inner sides of the upper connecting rod (4) and the lower connecting rod (7), the shaft (9) is arranged in the mounting grooves (14), the upper end of the shaft (9) is connected with the upper connecting rod (4) through a pin (6), and the lower end of the shaft (9); a limiting bulge (11) is arranged on the outer side of the shaft (9), an inward limiting bulge (10) is arranged at the top end of the inner side of the lower connecting rod (7), and the lower part of the lower connecting rod (7) is connected with the two wheels (8) through a bearing (16); and the upper connecting rod (4) is provided with a shaft hole (13) corresponding to the shaft (9).

2. A wheel-stowable luggage case according to claim 1, characterised in that: the shaft (9) and the upper connecting rod (4) are provided with through holes (15) corresponding to the pins (6), and the pins (6) penetrate between the upper connecting rod (4) and the shaft (9).

3. A wheel-stowable luggage case according to claim 1, characterised in that: and a rubber pad (5) is arranged on the outer side surface of the lower connecting rod (7).

4. The wheel-stowable luggage of claim 1, wherein: the number of the limiting bulges (11) arranged on the outer side of the shaft (9) is at least 2.

5. The wheel-stowable luggage of claim 1, wherein: the limiting bulge (11) arranged on the outer side of the shaft (9) is arranged on the lower half section of the shaft (9).

6. A wheel-stowable luggage case according to claim 1, characterised in that: the case (1) is made of ABS plastic, and a sponge lining is arranged in the case (1).

7. A wheel-stowable luggage case according to claim 1, characterised in that: the wheel (8) adopts a pneumatic rubber tire.