KR200336772Y1 - Step moving apparatus for a hand carrier - Google Patents

Abstract

The present invention relates to a lifting device that can move up and down the jaw or stairs in a transport mechanism, such as a cart, baby carriage.

It is possible to disassemble and assembly, the lower one side is open and the casing 10 is divided into two compartments are provided, the roller shaft 21 is fixed to both side brackets 11 of the casing and the roller shaft is freely rotated A series of small rollers 22 form a group in a uniform shape, and the rubber layer 32 is doped to a predetermined thickness on both sides of the outside in the flexible and elastic fibrous layer 31, and the unevenness 33 is formed. One small belt-shaped wheel 20 is provided in which the belt 30 is coupled around the roller group of the type described above to enable free rotation.

In the above belt-shaped wheel 20, a series of roller groups 28 for freely rotating the belt are closely installed at the same time as a part of the straight line 26 at the ground contact, and a part of the belt is formed from the bottom of the casing. Is projected so that the casing is not in contact with the edge of the ground or stairs, the other parts of the roller group is configured to be spaced apart at predetermined intervals to form a curved shape (27). The rubber layer of the belt is provided with irregularities so as not to slip and at the same time there is a fine gap 34 to the outside at a predetermined interval to make it more flexible and elastic, so that it smoothly rotates around the rollers without pressing the rollers when mounted on the rollers. It becomes possible.

Arrangement of the belt-type wheels in two rows, but mutually alternating, so that the belt is continuously connected to the ground contact portion is a step lift device of the transfer mechanism, characterized in that it is possible to move as if sliding on the chin or stairs.

Description

Step moving apparatus for a hand carrier

In non-motorized transport mechanisms such as strollers and carts, wheels are usually small and pushed by human power, making it very difficult to get over the jaw and more difficult to use stairs.

In particular, if you go down the stairs with things in the cart, the wheels of the cart are small and suddenly fall off due to the step difference, there is a risk of damage.

In addition, because most of the floor using strollers are women, they had to give up using the stairs at all and had to move around with the stroller.

Radial three or four wheels as a conventional lifting member, a plurality of small wheels stacked in two rows, infinite wheels using a belt, etc. have been proposed, but it is inconvenient to use or the above problems. There were many shortcomings to solve. In addition, the wheel of the existing infinitely slack type is too long to be a belt or a chain, and because of the tension of the belt to press the roller not only smooth rotation, but also a large load had a problem that is difficult to support the belt.

The present invention is to solve the above problems,

By arranging small-sized belt-type wheels by combining belts around rollers with small rollers arranged in two rows, the belts are connected in the ground contact area so that each belt-type wheel maintains a constant tension while allowing free rotation. To solve the above problems, the belt-type wheels that can bear heavy loads are supported by the roller and the roller shaft at the ground contact part. It was. In addition, as in the case of arranging a small number of small wheels to provide a rattling-free lifting device caused by the wheel between the wheels.

In addition, when installed in the stroller is easy to use by simple operation and the baby is to provide a transport means that can pass the stairs while maintaining a safe and comfortable state (horizontal angle).

1 is a longitudinal cross-sectional view of a belt type wheel

2 is a longitudinal sectional view of the belt;

Figure 3 is a perspective view of the casing perforated roller shaft fixing holes

Figure 4 is a side view showing the structure of the roller group

Figure 5 is an excerpt of the straight portion of the roller shaft and the arrangement of the rollers

6 is a rear view showing the arrangement of the belt-type wheels

Figure 7 is a side view showing the arrangement of the belt-type wheel

8 is a baby carriage equipped with a lift device of the present invention

9 is another embodiment of the stroller equipped with the lifting device of the present invention

10 is a cart equipped with a lifting device of the present invention

11 is a travel bag equipped with a lifting device of the present invention

** Explanation of symbols on the main parts of the drawing **

10 casing 11: casing side bracket

12: opening of the casing 20: belt-type wheel

21: roller shaft 22: roller

25: roller shaft fixing hole 26: straight portion

27: curved portion 28: roller group of one unit

30 belt 31 fiber layer

32: rubber layer 33: uneven portion

34: outer clearance of rubber layer 35: ground contact

36: 1st row belt type wheel 37: 2nd row belt type wheel

40: lifting device combined with the first row and second row

50: stroller 51: stroller wheels

52: handle 53: frame

54: rotary joint 55: connecting rod

60: cart 61: cart wheel

70: suitcase 71: wheels

The present invention constitutes a plurality of small rollers 22 in a straight and curved form instead of the existing small wheels, and the belt 30 is freely rotated around the roller group 28 installed in the above shape to serve as one wheel. The small belt-shaped wheels 20 are arranged in the same manner to compensate for the shortcomings of the rattling phenomenon occurring in the case of the wheels when the stairs are moved in the part 35 in contact with the ground without bending.

Referring to the configuration and operation of the present invention in detail with reference to the drawings.

1, 3, and 4, the lower one side is opened, the roller shaft 21 is fixed, and the casing 10 is provided to accommodate the roller 22 and the belt 30 and to help smooth rotation while preventing the belt from being separated. . The casing is divided into two by a central bracket on the long side and is configured to be separated and assembled by a predetermined method. The roller shaft fixing holes 25 for supporting the rollers on both sides 11 of the casing are drilled at regular intervals and in a predetermined shape to mount the roller shaft 21, the roller 22, and the belt 30. The roller shaft 21 is fixed to the casing in a predetermined manner.

Each small roller is inserted into the roller shaft and freely rotated. One roller group 28 is composed of a straight portion 26 and a curved portion 27 so that the belt can be rotated smoothly when the belt is mounted. 26) is located at the bottom and becomes the ground contact portion 35, and the roller is spaced apart only to the extent that is rotatably installed.

FIG. 2 shows a rubber layer 32 with a predetermined thickness to maintain the flexibility of the belt in and out of the flexible and elastic fibrous layer 31 as the belt 30 coupled and rotated around the roller group 28. ) Is made by doping and at the same time to form the unevenness 33 to prevent slipping. In addition, when the entire rubber layer of the belt is molded in one piece, the curved portion 27 may not be flexed flexibly, and thus a tension may be applied to the roller. Thus, the outer part of the rubber layer may be minutely used to maximize the flexibility of the belt. Another feature is that it is molded into a cut form. In other words, the rubber layer is integrally molded to the fiber layer, but the gap 34 is finely formed as if cut at predetermined intervals, and when the belt is bent at the curved portion, the outer side of the rubber layer is flexed and bent flexibly so as not to press the roller. It is possible.

Therefore, in the belt as described above, the gap 34 is retracted in the straight portion, and the cushioning function is possible, and the curved portion flexes flexibly to enable smooth rotation, so that the thickness of the rubber layer can be adjusted as needed. In order to fully function as a wheel, the belt should be smoothly rotated while maintaining proper tension without tensioning the belt too much or pressing the roller.

The present invention is flexible and not elastic, the outside of the uneven belt is formed in contact with the staircase without slipping so that it can be rotated smoothly around the roller to act as a wheel by the combination of the roller 22 and the belt 30 In the "belt-type wheel 20" is called.

6 is a rear view of the belt-type wheels 20 arranged in two rows, and FIG. 7 is a side view.

The belt-type wheels 20 are arranged in the first row 36 at regular intervals, and the belt-type wheels in the second row 37 are arranged at the same intervals on the sides thereof, and the second row is disposed between the belt-type wheels and the wheels in the first row. The belt-shaped wheels are positioned so that the straight portion 26 of the belt-shaped wheels which are in contact with the ground is connected so that the belts are continuously contacted when passing through the stairs or the corners, so that the stairs can pass naturally.

The main body of the present invention is a series of roller group 28 made of a straight and curved as described above and the belt 30 is combined with a belt 30 doped with a rubber layer in an uneven shape so as to be flexible, elastic, non-slip and cushioning action. Alternately arranged belt-shaped wheels 20, which are smoothly rotatable around the 28, in two rows, so that each belt-shaped wheel rotates and slides when the belt touches the edge of the stairs at the ground contacting portion 35. It is a stairway elevating device characterized in that it is possible.

8 is an embodiment showing a state of use by mounting the lift device of the present invention to a baby carriage.

Stair elevating device 40 using the belt-type wheel 20 is fixed to the casing, the other end is connected to the frame of the stroller by using the connecting rod 55 and the hydraulic system is selectively applied to the connecting rod. It can be used as a shock absorber in the stair elevator 40.

In addition, when mounting the stairs lift device in the stroller when the stroller is placed on the ground, the angle with the ground should be installed at about 30 degrees, which is the inclination angle of the stairs, so that the stroller is horizontal when moving the stairs. This is somewhat different depending on the building, but it is generally considered that the inclination angle of the stairs is around 30 degrees.

When mounting the above-mentioned step elevator apparatus in the baby carriage, it is also possible to add a device that can be adjusted by a simple operation according to the user's needs without fixing at a constant angle.

In addition, the joint connection portion 54 that can be folded and released from the middle of the rear wheel frame of the stroller is provided so that it is located above the ground line of the stairs elevator, and when the inclined surface is moved, the rear wheel lower frame is folded around the joint connection portion and a predetermined method is provided. To lock the handle frame and move the stairs.

Therefore, when descending from the stairs with a stroller equipped with a lift device as described above, the rear wheels lean back and then grab the handle from the back, and when the climb is pulled up.

9 is a view showing another embodiment in which the stairs lift device of the present invention is mounted on a baby carriage. When the stairs lift device 40 is mounted in parallel to the rear wheel frame of the baby carriage, and operated in a predetermined method, the robot moves forward by a predetermined angle. It is bent and fixed. In order to realize this, a device capable of adjusting the rotation angle of the rear wheels in the rotary joint 54 and a device capable of one-touch operation of both rear wheel frames may be added.

10 is a use state diagram showing an example of moving the stairs by applying the stairs lift device 40 of the present invention to the cart, and when connected to the cart like a stroller is connected to the frame of the cart using a connecting rod and stairway means Make sure that the ground wire of the wheel and the ground wire of the cart wheel coincide with each other and the angle is approximately parallel to the wheelbarrow frame.

Figure 11 shows an embodiment of a method of using the stairs lifting device 40 of the present invention applied to a travel bag.

As described above, the use of the transport mechanism that allows the stairs lift device of the present invention to be smoothly passed through the stairs or the jaw by mounting the cart, stroller, and travel bag has been described.

A feature of the present invention is to provide a step-up device of a transfer mechanism that allows a belt-type wheel that can be rotated smoothly around a roller to be connected to a straight line at the ground contact portion and thus to move naturally without sliding in corners such as stairs. will be.

Until now, if you use a trolley or stroller, or where there are a lot of stairs or jaws, if you do not use it at all or inevitably meet with others, you should seek help.

In addition, even if not loaded with heavy items in the cart was very difficult to pass through the stairs or chin often suffered. In particular, women who use strollers are often unable to lift the stroller, but the stroller adopting the staircase passage member of the present invention can easily climb and descend the stairs with a simple operation, so that housewives with children can go freely anywhere. There is an advantage that you can work more comfortably.

It is also a useful design that can solve many difficulties in using the stairs in the industrial field or in many places using the cart.

Claims (2)

Casing (10) which is possible to be assembled and disassembled, the lower one side is opened and formed of two compartments by side brackets (11), The roller shaft fixing hole 25 is bored in a rounded square shape on the side bracket of the casing and the roller shaft 21 is fixed to the fixing hole, A series of roller groups 28 coupled to the roller shaft and freely rotating; Rubber belt 30 doped with a rubber layer on the outside of the fibrous layer, The rubber belt is coupled to the belt-type wheel 20 with an appropriate tension to enable a smooth rotation around the roller group, The belt elevating device of the transfer mechanism, characterized in that the wheels are alternately arranged in two rows and arranged so that the belts at the ground contact portion are continuously connected. The method of claim 1, The series of roller groups 28 are formed in a straight line at the ground contact part 35 and are closely installed and the other parts are curved. The rubber belt is provided with a fine gap 34 from the outside of the rubber layer to the inner fibrous layer so that the outer end of the belt is opened at the curved portion of the roller group, The step of elevating the device of the transfer mechanism, characterized in that the rubber belt protrudes from the end of the casing to use a belt-type wheel to contact the ground.