CN105286250B - A kind of portable stair climbing draw-bar box - Google Patents

Abstract

The present invention relates to a kind of draw-bar box of portable climbing stairs, including draw-bar box body（1）, the draw-bar box body（1）Side along its length is provided with telescopic pull bar（4）, the pull bar（4）Including two telescopic stretch rods（4‑1）And two stretch rods of connection（4‑1）Connecting rod（5）, in addition to it is arranged on draw-bar box body（1）The back side and pull bar（4）Bottom rotates the flat wheel plate connected to take turns linkage（2）；The flat wheel plate（2）On be laid with roller（14）；Using said structure, with simple and reasonable, the area that draw-bar box is contacted with stair is added by flat wheel plate; the relative motion of draw-bar box wheel and stair is changed into the slip of flat board and stair; therefore draw-bar box is made in stair activity, it is steady laborsaving, protect the article in case.Go upstairs and pack up flat wheel plate to casing recess after terminating, flat wheel plate is stuck in casing recess, and draw-bar box overall appearance will not destroy the attractive in appearance of the original design of case and bag without significant change.

Description

A portable trolley case for climbing stairs

technical field

The invention belongs to the field of trolley cases, in particular to a portable trolley case capable of climbing stairs.

Background technique

Trolley cases play an important role in everyday life, especially when traveling. The trolley case allows us to easily carry a large amount of daily necessities. On generally flat roads, the trolley case is easy to use and very labor-saving. However, in the process of going up and down the stairs, the trolley case is laborious to drag, and forced dragging will greatly shorten the life of the trolley case.

The common trolley case is provided with traveling wheels at the bottom, and has a retractable trolley to facilitate its walking on flat ground. However, when going up and down stairs or encountering obstacles, it is easy to rub the bottom of the trolley case against the stair steps or obstacles, thereby causing damage to the trolley case. At this time, manpower is still required to lift the trolley case, causing the trolley case to lose its portability and labor-saving effect, and it is impossible to effectively avoid obstacles or go up and down stairs while pulling the case. At present, many trolley cases that can climb stairs are also reported, but most of them are inconvenient to use, or the cost is too expensive, which greatly limits the application in the market.

For the above technical problems, it needs to be improved.

Contents of the invention

In view of the above situation, in order to overcome the defects of the prior art, the object of the present invention is to provide a portable stair-climbing trolley case, which can conveniently and labor-saving climb the stairs and slide the trolley case, and has higher stability and safety at the same time. The trolley case is simple and easy to go up and down stairs, saving time and effort.

In order to achieve the above object, the technical solution adopted by the present invention is: a portable trolley case for climbing stairs, including a trolley case body, and a telescopic pull rod is arranged on one side of the trolley case body along the length direction, and the pull rod includes two A stretchable stretch rod and a connecting rod connecting the two stretch rods also include a flat wheel plate arranged on the back of the trolley case body and connected to the bottom end of the pull rod by a wheel bar mechanism; the flat wheel plate is equipped with scroll wheel.

As a preferred solution of the present invention, the wheel lever mechanism includes a lever, a brake wheel, a guide rod shaft and a slide bar; one end of the lever is rigidly connected to the brake wheel, and the other end is connected to the guide rod shaft , the guide rod shaft is fixedly connected with the end of the stretch rod; the lever is fixed on the trolley case body through a lever pin, and the lever pin is located at the bottom end of the lever; the brake wheel is matched with the brake wheel shaft The slider moves inside, and the slider is fixed on the trolley case body; the slider is provided with a driven shaft and a driven wheel, the driven shaft is fixed on the trolley case body, and the driven wheel can rotate along the driven shaft. The driven wheel is connected with the flat wheel plate.

As a preferred solution of the present invention, a guide rod spring is provided inside the connecting rod of the lever, and the guide rod spring is used to control the opening and closing of the guide rod button.

As a preferred solution of the present invention, an accommodating cavity for placing flat wheel boards is formed in the middle of the back of the trolley case body; the accommodating cavity can accommodate rollers.

As a preferred solution of the present invention, the rollers are alternately arranged on the flat wheel board.

As a preferred solution of the present invention, the stretch rod is an elastic telescopic buffer rod.

As a preferred solution of the present invention, the pull rod and the lever are L-shaped.

As a preferred solution of the present invention, the rollers are flat rubber wheels.

Beneficial effects of the present invention: adopting the above-mentioned structure, the structure is simple and reasonable, the contact area between the trolley case and the stairs is increased through the flat wheel plate, and the relative movement between the wheels of the trolley case and the stairs is transformed into the sliding between the flat plate and the stairs, so that the trolley case When going up and down stairs, it is stable and labor-saving, and the items in the box are protected. After climbing the stairs, put away the flat wheel board to the recess of the box body, the flat wheel board is stuck in the recess of the box body, the overall appearance of the trolley case does not change significantly, and the original design of the bag will not be damaged.

Description of drawings

Fig. 1 is a schematic diagram of the specific implementation of the stair-climbing trolley case of the present invention.

Fig. 2 is the locking button mechanism of the present invention.

Fig. 3 is the flat wheel plate control mechanism of the present invention.

Fig. 4 is a structural diagram of the flat wheel plate of the present invention.

Fig. 5 is a schematic diagram of the trolley case after the flat wheel board is stowed according to the present invention.

Reference signs: trolley case body 1, flat wheel plate 2, stairs 3, pull rod 4, stretch rod 4-1, connecting rod 5, guide rod spring 6, guide rod button 7, accommodation chamber 8, guide rod shaft 9, Lever pin 10, lever 11, brake wheel shaft 12, brake wheel 13, roller 14, driven wheel 15, slide bar 16, driven wheel shaft 17.

detailed description

Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Embodiment: a portable trolley case for stair climbing as shown in Figures 1-5, comprising a trolley case body 1, and one side of the trolley case body 1 along the length direction is provided with a telescopic pull rod 4, and the pull rod 4 includes Two telescopic stretch rods 4-1 and the connecting rod 5 connecting the two stretch rods 4-1 also include a flat wheel arranged on the back of the trolley case body 1 and connected with the bottom end of the pull rod 4 in rotation by a wheel bar mechanism Plate 2; the flat wheel plate 2 is provided with a number of rollers 14 for the sliding of the trolley case body 1 . As shown in Figure 5; when going up the stairs, the person stands on the stairs and pulls the connecting rod 5 of the trolley case body 1, and at this moment, the trolley case body 1 and the steps of the stairs 3 present an angle. Press the guide rod button 7, the flat wheel board 2 will break away from the trolley case body 1 under its own gravity, and lay flat on the steps of the stairs 3; press the guide rod button 7 on the connecting rod 5, the flat wheel board 2 and the trolley case body 1 The angle is locked; when a person pulls the trolley case to move upwards, the trolley case is located on the flat wheel plate 2, and the flat wheel plate 2 rolls on the stairs 3 steps. After the stairs 3 have been walked, the flat wheel plate 2 is put away, and the guide rod button 7 is released. Under the action of the guide rod spring 6, the flat wheel plate 2 is fixed in the depression of the trolley case; the flat wheel plate controls the movement of the trolley case and the stairs. It is transformed into the relative motion of the flat wheel board and the stairs; due to the special structure of the flat wheel board 2, when the trolley case goes up the stairs, it is stable and labor-saving.

The wheel lever mechanism includes a lever 11, a brake wheel 13 rigidly connected to the end of the lever 11 and a guide shaft 9 connected to the pull rod 4; the lever 11 is fixed on the pull box body 1 by a lever pin 10; the lever The pin 10 is located at the bottom of the lever 11; it also includes a slide bar 16, and the brake wheel 13 moves in the slide bar 16 through the cooperation of the brake wheel shaft 12; the slide bar 16 is fixed on the trolley case body 1; The rod 16 is provided with a driven shaft 17; the driven wheel 15 rotates along the driven shaft 17; the driven wheel 15 is connected with the flat wheel plate 2; the driven shaft 17 is fixed on the trolley case body 1; the flat wheel After the board 2 was put down, it was tiled on the stair surface. After pressing the guide rod button 7, the stretch rod 4-1 was pulled up. The driven wheel 15 contacts; the driven wheel 15 cannot rotate, so the angle of the flat wheel plate 2 and the trolley case body 1 will be fixed, and the trolley case body 1 can slide on the stairs by relying on the flat wheel plate 2.

The connecting rod 5 is provided with a guide rod spring 6; the guide rod spring 6 is used to control the opening and closing of the guide rod button 7; after the guide rod button 7 is released, it can return to the previous state; the locking button 7 and the stretching The rod 4-1 is rigidly connected, and the flat wheel plate can be locked by pressing the button. In the initial state, under the elastic force of the guide rod spring 6, the button and the stretch rod 4-1 are located at the lowest end in the pull rod. After pressing the guide rod button 7, the guide rod is pulled up, and the flat wheel plate 2 is locked; loosen the guide rod button 7, and the guide rod button 7 returns to the lowest end under the action of the guide rod spring 6, and the flat wheel plate 2 is unlocked .

The middle part of the back of the trolley case body 1 is formed with an accommodation chamber 8 for placing the flat wheel board 2; The side distance at the accommodation chamber 8 is slightly smaller than the width of the flat wheel plate 2, so the flat wheel plate can be stuck in the recess without falling off. It only needs a little force to detach when going up stairs.

The rollers 14 are arranged alternately on the flat wheel plate 2; the diameters of the rollers 14 are small, and they are placed in a staggered manner; during the rolling process, the area in contact with the stairs 3 is increased, and the height difference between the wheels of the rollers 14 is small, the rolling is stable, and the vibration is small .

In order to increase the convenience of collecting and storing the portable trolley case for climbing stairs, the stretching rod 4-1 is an elastic telescopic buffer rod.

To facilitate the stability of the pull rod 4 and the human lever 11, the pull rod 4 and the lever 11 are L-shaped.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Although this paper uses the reference signs in the figure more often: trolley case body 1, flat wheel plate 2, stairs 3, pull rod 4, stretch rod 4-1, connecting rod 5, guide rod spring 6, guide rod button 7, Accommodating cavity 8, guide rod shaft 9, lever pin 10, lever 11, brake wheel shaft 12, brake wheel 13, roller 14, driven wheel 15, sliding rod 16, driven wheel shaft 17 and other terms, but do not exclude the use of other term possibility. These terms are used only for the purpose of describing and explaining the essence of the present invention more conveniently; interpreting them as any kind of additional limitation is against the spirit of the present invention.

Claims (7)

1. A portable stair-climbing trolley case, comprising a trolley case body (1), and a telescopic pull rod (4) is provided on one side of the trolley case body (1) along the length direction, and the pull rod (4) includes two A stretchable stretch rod (4-1) and a connecting rod (5) connecting the two stretch rods (4-1), is characterized in that: it also includes the back of the trolley case body (1) and the pull rod ( 4) The flat wheel plate (2) connected by the wheel lever mechanism at the bottom; the wheel (14) is arranged on the flat wheel plate (2); the wheel lever mechanism includes a lever (11), a brake wheel (13) ), the guide rod shaft (9) and the slide rod (16); the end of one end of the lever (11) is rigidly connected to the brake wheel (13), and the other end is connected to the guide rod shaft (9), the guide rod The shaft (9) is fixedly connected to the end of the stretch rod (4-1); the lever (11) is fixed on the trolley case body (1) through a lever pin (10), which is located at The bottom end of the lever (11); the brake wheel (13) moves in the slide bar (16) through the cooperation of the brake wheel shaft (12), and the slide bar (16) is fixed on the trolley case body (1); the The sliding rod (16) is provided with a driven shaft (17) and a driven wheel (15), the driven shaft (17) is fixed on the trolley case body (1), and the driven wheel (15) can move along the driven shaft ( 17) rotation, the driven wheel (15) is connected with the flat wheel plate (2). 2. A portable trolley case for climbing stairs according to claim 1, characterized in that: the connecting rod (5) of the lever (11) is provided with a guide spring (6), and the guide spring (6 ) is used to control the opening and closing of the guide button (7). 3. A portable trolley case for climbing stairs according to claim 1, characterized in that: the middle part of the back of the trolley case body (1) is formed with an accommodation chamber (8) for placing a flat wheel board (2); the accommodation chamber (8) The roller (14) can be placed. 4. A portable trolley case for climbing stairs according to claim 1 or 3, characterized in that: the rollers (14) are staggeredly arranged on the flat wheel board (2). 5. The portable trolley case for climbing stairs according to claim 1, characterized in that: the stretch rod (4-1) is an elastic telescopic buffer rod. 6. The portable trolley case for climbing stairs according to claim 2, characterized in that: the pull rod (4) and the lever (11) are L-shaped. 7. A portable trolley case for climbing stairs according to claim 1 or 3, characterized in that: the rollers (14) are flat rubber wheels.