KR20160131363A - Mobility easy to moving from stairway - Google Patents

Mobility easy to moving from stairway Download PDF

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Publication number
KR20160131363A
KR20160131363A KR1020150063601A KR20150063601A KR20160131363A KR 20160131363 A KR20160131363 A KR 20160131363A KR 1020150063601 A KR1020150063601 A KR 1020150063601A KR 20150063601 A KR20150063601 A KR 20150063601A KR 20160131363 A KR20160131363 A KR 20160131363A
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KR
South Korea
Prior art keywords
sliding
moving means
front wheel
rear wheel
body frame
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Application number
KR1020150063601A
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Korean (ko)
Inventor
주진성
Original Assignee
주식회사 그린탑
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Application filed by 주식회사 그린탑 filed Critical 주식회사 그린탑
Priority to KR1020150063601A priority Critical patent/KR20160131363A/en
Publication of KR20160131363A publication Critical patent/KR20160131363A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B9/00—Accessories or details specially adapted for children's carriages or perambulators
    • B62B9/02—Accessories or details specially adapted for children's carriages or perambulators providing for travelling up or down a flight of stairs
    • B62B9/04—Accessories or details specially adapted for children's carriages or perambulators providing for travelling up or down a flight of stairs with runners, e.g. sledge runners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B5/00—Accessories or details specially adapted for hand carts
    • B62B5/02—Accessories or details specially adapted for hand carts providing for travelling up or down a flight of stairs
    • B62B5/025—Accessories or details specially adapted for hand carts providing for travelling up or down a flight of stairs with gliding elements, e.g. skids

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
  • Handcart (AREA)

Abstract

A moving means that facilitates step movement is disclosed. The moving means, which is easy to move in steps according to the embodiment of the present invention, has a supporting structure by the engagement of at least one frame, and a seat or loading part is formed on the upper part. At least one front wheel and rear wheel A curved surface portion extending from the front portion of the main body frame and protruding forward from the front wheel so as to be able to rise along a stepped edge which is touched by a user's pushing force, And a sliding portion formed between the front wheel and the rear wheel at a lower portion of the main body frame to extend in the running direction and to support the main body frame through a stepped edge.

Description

{Mobility easy to moving from stairway}

More particularly, the present invention relates to a moving means such as a stroller, a hand cart or the like that moves by a pushing force by a user. In the moving means, when the user moves the moving means by himself or herself So that the user can easily move the moving means even when there is an obstacle such as a staircase or a jaw by allowing the moving means to rise along the edge of the stairs naturally by using a force pushing the moving means It is about technical thought.

BACKGROUND ART [0002] In general, a variety of moving means such as a stroller for taking out an infant, a wheelchair for carrying the uncomfortable person, a cart for moving loads, a cart, and the like are widely used.

Such a moving means is normally operated by a pushing force of the user without any additional power, and there is no problem in traveling on a general road such as a flat road where there is no obstacle, but the moving means using a relatively small wheel There is a problem in that the movement is practically impossible in the topography such as the stairs and the jaws. Accordingly, for example, a user who carries an infant in a baby carriage often moves up and down the stairs while using the subway, or if the elevator is not provided when using the overpass or underground walkway, the moving means (baby carriage) If there is no help from the people around you, there may be situations where the stairs can not be moved.

Although a number of technical ideas for easily moving the step of the moving means have been known, the prior arts have provided separate auxiliary wheels such as a caterpillar so that the steps can be moved, thereby increasing the manufacturing cost, And the like.

Therefore, a technical idea is required to easily raise the moving means along the edge of the stair using only the pushing force of the user even with a simple structure.

In addition, it is also possible to provide a predetermined sliding portion (supporting member) which can slide along the edge of the stair to the moving means, thereby reducing the fluctuation that may occur when the moving means moves on the stairs, Is required.

In addition, it is required that such a sliding part (supporting member) provides a convenience of step movement and also prevents a technical problem from being obstructed even when traveling on a general flat surface.

Korea Patent Publication No. 10-2009-0107883, "Jaw lifting device for mobile means" Korea Patent Publication No. 10-2004-0110603, "Stair elevating device of conveying mechanism"

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a curved surface portion that protrudes from a front wheel on a front surface of a main body frame of a moving means such as a baby carriage so that the front wheel portion of the moving means can be raised So that the elevated moving means can be slid along the edge of the stairs so that the user can move the stairs naturally even if the user does not lift the moving means itself for stair movement.

In addition, since the sliding portion sliding along the edge of the step is normally folded inward of the moving means and is unfolded only when the moving means moves the stairs, And to provide a technical idea that can facilitate movement.

According to an aspect of the present invention, there is provided a moving means which is easy to move in a stepwise manner, the moving means being formed by a combination of at least one frame, a seat or a loading portion is formed on an upper portion thereof, A curved surface portion extending from a front portion of the main body frame and protruding frontward from the front wheel and rising along a stepped edge that is in contact with a user due to a pushing force, And a sliding portion connected to the curved surface portion through the connection portion and formed to be elongated in the traveling direction between the front wheel and the rear wheel at a lower portion of the main body frame and capable of supporting the main body frame through a stepped edge, .

In addition, the sliding portion maintains the folded state in which the sliding portion is folded inward in the moving direction of the moving means that is easy to move the step. When the predetermined pressure is applied to the curved portion, the sliding portion rotates toward the ground by a predetermined angle, And is changed.

The sliding portion may include a first sliding portion having one end connected to the shaft of the front wheel and the other end connected to the second sliding portion and a second sliding portion having one end connected to the shaft of the rear wheel, And the other end of the first sliding part is fitted into a groove formed by a predetermined length at the other end of the second sliding part so that the length of the sliding part can be adjusted along the groove .

The curved surface portion may further include a pressing portion protruding toward the front surface at least at a part of the front surface portion so as to be brought into contact with the edge of the step and being inserted into the connecting portion when pressure is applied to the step edge, And the sliding portion is changed from the folded state to the extended state when the pressing portion is inserted.

The connecting portion may further include a buffer for reducing the rotational speed of the sliding portion when the sliding portion rotates from the opened state to the folded state.

Further, the sliding portion may be formed to be longer than the front wheel and the rear wheel by a predetermined length toward the ground when the sliding portion is in the extended state.

Further, the sliding portion may be rotatably coupled to a rear wheel shaft connecting the rear wheels with the other end thereof.

Further, the main body frame may further include a height adjuster capable of adjusting at least one of a handle formed at an upper end or a height of the upper end.

According to another aspect of the present invention, there is provided a moving means for moving a stair according to another embodiment of the present invention. The moving means comprises a supporting structure formed by combining at least one frame, a seat or a loading portion is formed on the upper portion, A main body frame having at least one front wheel and a rear wheel formed thereon, a main frame coupled to the main frame and a front wheel support frame to which the front wheel is coupled, protruding forward from the front wheel and rising along a stepped edge, And one end connected to the curved surface portion through a connection portion and formed to be long in a running direction between the front wheel and the rear wheel at a lower portion of the main body frame so as to support the main body frame through a step edge As shown in Fig.

According to an aspect of the present invention, there is provided a curved surface portion protruding from a front wheel on a front surface portion of a main body frame of a moving means such as a baby carriage so that the front wheel portion of the moving means can be raised naturally along the edge of the stairs, So that the user can move the stairs naturally even if the user does not lift the moving means itself for the step movement.

In addition, since the sliding portion sliding along the edge of the step is normally folded inward of the moving means and is unfolded only when the moving means moves the stairs, There is an effect that movement can be facilitated.

BRIEF DESCRIPTION OF THE DRAWINGS A brief description of each drawing is provided to more fully understand the drawings recited in the description of the invention.
FIG. 1 shows a schematic view of a moving means which is easy to move in steps according to an embodiment of the present invention.
FIG. 2 shows an example in which a moving means, which is easy to move in steps, moves in a step according to an embodiment of the present invention.
FIG. 3 illustrates the operation of the sliding unit in a moving unit in which steps are easily moved according to an embodiment of the present invention.
FIG. 4 illustrates an embodiment of a sliding unit in a moving unit in which steps are easily moved according to an embodiment of the present invention.
5 shows an embodiment of a curved surface portion of a moving means which can be easily moved in steps according to an embodiment of the present invention.
FIG. 6 shows an embodiment of a curved surface portion in a moving means which is easy to move in steps according to another embodiment of the present invention.
FIG. 7 shows an embodiment of height adjustment of a moving means which can be easily moved in steps according to an embodiment of the present invention.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.

In the following description, well-known functions or constructions are omitted for clarity.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the preferred embodiments of the present invention with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

FIG. 1 shows a schematic view of a moving means for moving a step according to an embodiment of the present invention. FIG. 2 shows an example in which moving means for moving a step in a step according to an embodiment of the present invention moves a step .

Referring to FIG. 1, the moving means 100, which is easy to move in steps according to an embodiment of the present invention, has a supporting structure by the combination of at least one frame, a seat or a loading portion is formed on the upper portion, A curved surface portion 150 extending from a front portion of the main body frame 110 and protruding forward from the front wheel 120, the main body frame 110 having at least one front wheel 120 and a rear wheel 130, And a sliding portion 170 formed between the front wheel 120 and the rear wheel 130 of the main body frame 110 in the running direction.

Hereinafter, for convenience of description, the case where the moving means is embodied as a baby carriage will be described as an example, but the scope of the present invention is not limited thereto. In addition to the baby carriage shown in the drawings, the moving means can be implemented in various forms, such as a cart, a cart, a wheelchair, and the like, regardless of its use as long as it can be carried by a person or a person.

According to an embodiment of the present invention, the moving means 100, which is easy to move in steps, includes a height adjusting portion 140 for adjusting the height of the upper end of the main body frame 110 and / A predetermined storage portion 160 may be further formed.

The curved surface portion 150 is integrally extended from the front portion of the main body frame 110 and protrudes forward from the front wheel 120. For example, Side front wheels 120 of the moving means 100, which are easy to move in steps.

However, the curved surface portion 150 is formed at a relatively low height close to the ground surface of the vehicle, so that the moving means 100, which is easy to move the step, May be formed so as to contact the obstacle (e.g., the stairs) first. The front surface of the curved surface portion 150, that is, the surface contacting with the step, is curved so that the moving means 100, which is easy to move stepwise, naturally moves along the edge of the step The front wheel 120 of the moving means 100, which is easy to move in steps, can be lifted up.

As shown in FIG. 2, when the front wheel 120 reaches the upper surface of one step by the curved surface portion 150, the sliding portion (not shown) formed between the front wheel 120 and the rear wheel 130 170 can contact the edge of the stairs to support the moving means 100 which facilitates the step movement. When the stairs are continuous, the sliding part 170 continuously slides in contact with the corners of the stairs so that the moving unit 100, which is easy to move the stairs, can easily move the stairs. Even if the width of the step is wide, the moving means 100, in which the step is easy to move, raises one step as described above, and then the same process is performed in the next step, The front wheels 120 of the moving means 100 that are easy to move can be lifted and the steps can be moved while repeating the process of the sliding portion 170 moving along the edge of the stairs.

One end of the sliding part 170 is engaged with the rear surface of the curved surface part 150 or the axis of the front wheel 120 or the front wheel support part to which the front wheel 120 and the main body frame 110 are coupled . The other end may be coupled with the shaft of the rear wheel 130 and fixed.

When the housing part 160 is formed under the main body frame 110 of the moving means 100 which can be easily moved in the stepwise manner as will be described later, the other end of the sliding part 170 At least a part of the sliding portion 170 may be coupled to the lower portion of the receiving portion 160, instead of being coupled with the shaft of the rear wheel 130. [

In any case, the sliding portion 170 is formed to be long in the running direction between the front wheel 120 and the rear wheel 130, so that when the moving means 100, which is easy to move in steps, moves in the step, As shown in FIG.

The sliding portion 170 may be formed at the lower end of the center of the moving means 100 which is easy to move in the step. Preferably, the sliding portion 170 may be formed on the same side as the front wheel 120 and the rear wheel 130, Or may be formed on inner surfaces spaced apart from each other by a predetermined distance. That is, the sliding part 170 slides through the step edge to support the moving unit 100 which is easy to move in the step. At this time, the user can easily adjust the balance of the moving unit 100, It is advantageous that the sliding portion 170 is formed so as to have a width similar to that of each wheel on both sides rather than one at the center portion.

According to an embodiment of the present invention, when only one front wheel 120 is provided on the moving means 100, the sliding portion 170 may be moved by the moving means 100, It may be preferable that only one is formed at the center of the opening.

On the other hand, the general stairways are non-slip, ie, non-slip, on the edge of the stairs to prevent slippage of the pedestrian. Accordingly, it is preferable that the sliding portion 170 is formed of a material that can smoothly slide even in the non-slip portions of the stairs, but also has sufficient durability to withstand direct friction with objects such as the edge of the stairs.

The sliding portion 170 may be formed in various shapes. Although the sliding part 170 is formed as a rectangular thin plate or a thin concavo-convex shape, the scope of the present invention is not limited thereto, and the sliding part 170 may be a cylinder, , A rectangular parallelepiped or the like, or may be further provided with components such as an endless track, a wheel and the like as necessary. In any case, the sliding portion 170 is formed to be long in the running direction of the moving means 100, which facilitates the stepwise movement, so that the sliding means 170 can support the moving means 100, .

On the other hand, it is preferable that the sliding part 170 is formed as close to the ground as possible. That is, as the sliding part 170 is formed higher than the ground, the moving part 100, which is easily moved by the curved surface part 150, is lifted from the edge of the stair, and then the sliding part 170 is moved There is no choice but to make a drop in contact. This may cause an unnecessary impact to the moving means 100, which is easy to move step by step, whenever the one moving step is performed, so that there is a problem in the durability of the moving means 100 itself, This is because there is a risk that a problem due to an impact may occur on an infant or an object which is carried or loaded on the moving means 100 which is easy to move in a step. Particularly, when the moving means 100, which is easy to move in steps, is implemented as a baby carriage, it can be difficult for the infant to ride.

As a result, the sliding portion 170 may be preferable as the height from the ground is lower. However, in this case, if the moving means 100, which facilitates the step movement, travels a general flat rather than a step, There is a problem that it may interfere with traveling of the moving means 100. For example, the sliding portion 170, which is formed at a height very close to the ground surface, may have a smaller size than the front wheel 120 and / or the rear wheel 130 when there is an obstacle that does not significantly affect general running, There is a risk that the user may be disturbed by the traveling of the moving means 100, which is easy to move the step.

Therefore, according to the technical idea of the present invention, the moving unit 100, which is easy to move the step, has a height equal to or more than a predetermined height so that the sliding unit 170 does not interfere with running on a general flat surface, The sliding portion 170 can have a height close to the ground surface or a height that allows the sliding portion 170 to touch the ground surface only when the movable means 100 is movable in the step. The configuration, function and operation of the sliding unit 170 according to the embodiment of the present invention will be described in detail with reference to FIG. 3 to FIG.

FIG. 3 is a view illustrating an operation of the sliding unit in a moving unit that can be easily moved in a step according to an embodiment of the present invention. FIG. 4 shows an embodiment of a sliding unit of the moving unit, 5 shows an embodiment of a curved surface portion of a moving means which can be easily moved in steps according to an embodiment of the present invention.

3A, when the moving means 100, which is easy to move in steps, travels on a general flat surface according to the embodiment of the present invention, the sliding portion 170 moves in a stepwise manner as shown in FIG. 3A, It is possible to maintain the folded state inside the moving means 100 with ease. As shown in FIG. 3B, the curved surface portion 150 formed on the moving means 100, which is easy to move in the step, contacts the stepped portion during running, and the user continues to move the moving means 100, 3A, the sliding portion 170 is folded as shown in FIG. 3B. As described above, the sliding portion 170 is slid through the edge of the stepped portion, as described above, And so on.

Although the sliding portion 170 is shown separately in the space between the front wheel 120 and the rear wheel 130 in the following description, One end (a) of the sliding part 170 and the other end (b) of the sliding part 170 are connected to the axis of the front wheel 120 and / And may be connected to a rear surface of the rear wheel 150 and an axis of the rear wheel 130.

This configuration can be equally applied to the respective sliding portions 170 when the sliding portions 170 are formed on both sides as described above. For example, when the curved surface portion 150 is pressurized, the sliding portion 170, which is folded inward in the moving direction of the moving means 100 formed on both sides of the moving means 100, .

For this, a pressing part 151 may be formed on the front surface of the curved surface part 150 as shown in FIG. 5A, the pressing part 151 may protrude from the front surface of the curved surface part 150. When the curved surface part 150 comes into contact with an obstacle such as a step or the like, And can be operated by being inserted into the curved surface portion 150 when pressure is applied.

The pusher 151 may be implemented in various forms. 5B, the pressing portion 151 may be formed to extend along the running direction on the entire surface of the curved surface portion 150. In addition, In this case, the contact point of the curved surface portion 150 moves as the moving means 100, which is the first contact of the curved surface portion 150 with the step and is easily moved by the user's pushing force, The pressure can be applied to the pressing portion 151 for a relatively long period of time.

In addition, although it is shown in the figure that two pushing portions 151 are formed and connected to the sliding portion 170 formed on both sides of the moving means 100 which is easy to move in the step, It goes without saying that the shape and / or the number of the unit 151 may be variously implemented as needed.

In this case, one end of the sliding portion 170 may be connected to the pressing portion 151 through a connecting portion (not shown) at the rear surface of the curved portion 150, and the pressing portion 151 may be connected to the pressing portion 151 The sliding portion 170 folded inward of the moving means 100, which is easy to move by the step, can be rotated by a predetermined angle (for example, 90 degrees) while being operated by the pressure.

In addition, although the curved surface portion 150 is shown as a curved surface plate having a thin thickness, the shape of the curved surface portion 150 is not limited thereto, and the curved surface portion 150 may have various thicknesses Of course.

The connecting portion (not shown) rotates the sliding portion 170 according to whether the pushing portion 151 is inserted inward by the pressure applied to the curved portion 150 to change the folding / Can be implemented. That is, when the pushing part 151 is pressed to the inside of the curved surface part 150 by the pressure, the inserted pushing part 151 is moved to one end of the sliding part 170 (The front portion of one moving means 100) to rotate the sliding portion 170.

The curved surface portion 150, the connecting portion (not shown), and the sliding portion 170 may be separately formed to be coupled to each other. However, according to an embodiment, And the sliding portion 170 may be formed integrally with the lower portion of the moving means 100 that facilitates the stepwise movement.

When the other end of the sliding part 170 is coupled to the shaft of the rear wheel 130 as described above, And a connecting portion (not shown) for connecting the shaft and the other end of the sliding portion 170 so that the sliding portion 170 can be rotated is provided on the rear wheel 130 through the connecting portion Axis and the other end of the sliding portion 170 may be connected.

When the pressure applied to the curved surface portion 150 is released, that is, when the curved surface portion 150 is no longer in contact with an obstacle such as a step, the sliding portion 170 moves It can be rotated back into the inner direction of the means 100 and return to the folded state.

At this time, if the user moves to a place having a relatively large number of stairs such as an underground walkway, a subway station, a pedestrian overpass, etc., or a case where the width of a stairway is relatively narrow, Even if no pressure is applied to the sliding portion 170, the sliding portion 170 pushes the edge of the step by the weight of the moving means 100, which is easy to move the step, so that the sliding state of the sliding portion 170 can be maintained have.

According to an embodiment, a fixing unit (not shown) may be provided to prevent the sliding unit 170 from being folded again when a predetermined pressure is applied to a surface of the sliding unit 170, have. That is, when pressure is applied to the fixing portion (not shown) while the sliding portion 170 slides on the edge of the step, the fixing portion (not shown) fixes the sliding portion 170 in the unfolded state . For example, the fixing portion (not shown) may be formed in a shape similar to the pressing portion 151 formed on the curved surface portion 150 on the side where the sliding portion 170 contacts the step edge.

However, if the width of the stairs is relatively wide or there is a mid-level landing, no pressure may be applied to the curved portion 150 and / or the sliding portion 170 for a short time. In this case, the folded state and the unfolded state of the sliding portion 170 can be repeatedly changed within a relatively short time period. This is because the user feels uncomfortable, or the durability of the moving means 100, It can be a danger to give.

Therefore, according to the embodiment of the present invention, a predetermined buffer (not shown) is provided in the connection part (not shown) where the sliding part 170 and the curved surface part 150 are connected to delay the folding of the sliding part 170 (Not shown) may be provided. For example, when the curved surface portion 150 is first brought into contact with the step and the pressure is applied to the pushing portion 151 in order for the user to climb the step, the sliding portion 170 is preferably deployed as soon as possible . When the sliding part 170 is folded again due to no further pressure being applied to the curved part 150 and / or the sliding part 170, the sliding part (not shown) The rotation speed of the sliding part 170 may be slowed down so that the extended state of the sliding part 170 can be maintained for a relatively long time. The buffer unit (not shown) may be a conventional buffer unit such as a pneumatic / hydraulic spring, a shock absorber, or a stay.

According to another embodiment of the present invention, when the sliding portion 170 is switched to the extended state by the pushing portion 151, the sliding portion 170 may be positioned between the front wheel 120 and the rear wheel 130, May be implemented to be longer toward the ground. That is, when the moving unit 100, which is easy to move in steps, moves in a step, the sliding unit 170 may be unfolded such that the front wheel 120 and the rear wheel 130 do not contact with the edge of the step. In this case, when the sliding portion 170 moves in the stepped state, a part of the front wheel 120 and / or the rear wheel 130 bumps against the edge of the step, There is a movable effect. When the sliding portion 170 travels on a flat surface as described above, the sliding portion 170 maintains the folded state, so that the sliding portion 170 can be rotated in the extended state, Even if the rear wheel 130 has a longer length toward the ground than the rear wheel 130, it may not interfere with traveling of the moving means 100, which facilitates the stepwise movement.

On the other hand, in the case of a moving means such as a baby carriage which is widely used in general, the moving means itself is often folded for easy carrying. At this time, there is no problem even if the sliding portion 170 is present when the moving means is folded about the traveling direction (that is, both sides of the moving means are close to each other). However, The sliding portion 170 may be disturbed. As described above, when the sliding portion 170 is coupled to the lower portion of the receiving portion 160 so as to correspond to the length of the receiving portion 160, there is no great inconvenience when the moving means is folded, When the other end of the sliding portion 170 is engaged with the shaft of the rear wheel 130 as described above, there is a problem that the effect of the sliding portion 170 may be insufficient even if the moving means is not folded or the moving means is folded.

In addition, according to an embodiment, as described later with reference to FIG. 7, when the moving means 100, which is easy to move in steps, moves through the stairs, Even if the height of the handle 110 formed on the upper end of the main body frame 110 is adjusted, it is possible to adjust the height of the front wheel < RTI ID = 0.0 > The distance between the rear wheel 120 and the rear wheel 130 may be reduced by a predetermined distance. Even in this case, there is a risk that the function is not smoothly performed due to the sliding portion 170.

Therefore, according to the technical idea of the present invention, since the sliding part 170 is realized by the combination of the first sliding part 170-1 and the second sliding part 170-2, The front wheel 120 and the rear wheel 130 may be spaced apart from each other. An embodiment of the sliding part 170 for this is shown in FIG.

Referring to FIG. 4A, the sliding unit 170 may be implemented by a combination of the first sliding unit 170-1 and the second sliding unit 170-2, as described above. One end (a) of the first sliding part 170-1 and one end (b) of the second sliding part 170-2 are connected to an axis of the front wheel 120 or a rear end of the rear wheel 130 Axis.

One end a of the first sliding portion 170-1 is not a shaft of the front wheel 120 but a support for connecting the main body frame 110 and the front wheel 120, (Not shown). One end b of the second sliding portion 170-2 may be connected to a fixing bolt for fixing the rear wheel 130 to the outside of the axis of the rear wheel 130. [

Meanwhile, the moving unit 100, which is easy to move in steps, can be realized such that the distance between the two front wheels 120 is narrower than the distance between the two rear wheels 130. In this case, the first sliding unit 170- 1) and one end (b) of the second sliding portion 170-2 are connected to the fixing bolts of the front wheel 120 and the fixing bolts of the rear wheel 130, respectively, The portion 170 may not be parallel with the running direction but may extend rearward, which may be inconvenient for movement. In this case, one end b of the second sliding portion 170-2 is parallel to the axis of the rear wheel 130 and the first end a of the first slidable portion 170-1 It may be desirable to be connected to a position where it can be achieved.

In addition, as shown in the drawing, the engaging portion to which the first sliding portion 170-1 and the second sliding portion 170-2 are connected is formed at a predetermined interval, that is, The distance between the front wheel 120 and the rear wheel 130 can be reduced by the adjustment of the height of the means 100. To this end, the other end of the second sliding portion 170-2, that is, the portion coupled with the first sliding portion 170-1, may be formed with the grooves as shown in the figure, And the other end of the first sliding part 170-1 may be coupled to the formed groove.

On the other hand, referring to FIG. 4B, when the moving unit 100, which is easy to move in steps, is folded for carrying, the sliding unit 170 is also folded as shown in the drawing, .

FIG. 6 shows an embodiment of a curved surface portion in a moving means which is easy to move in steps according to another embodiment of the present invention.

Referring to FIG. 6, the moving means 100, which is easy to move in steps according to another embodiment of the present invention, has the same configuration as the above-described configuration in FIG. 1, and its shape can be partially realized similarly. However, the curved surface portion 150 that lifts the moving means 100, which is the first to come into contact with the step and is easy to move the step by step, through the pushing force of the user, is not formed integrally with the main body frame 110 A front wheel support frame for coupling the front wheel 120 and the main body frame 110, or integrally extending from the front wheel support frame.

In this case, when the body frame 110 and the curved surface portion 150 are difficult to be formed integrally according to the use or the embodiment of the moving means 100, There is an effect that the technical idea of the present invention can be implemented more easily when only one is provided at the center portion instead of one pair.

According to the embodiment of the present invention, the moving means 100, which is easy to move in steps, adjusts a part of the main body frame 110 to adjust the height of the handle formed at the upper end of the main body frame 110 and / And a height adjuster 140 for adjusting the angle of the seat. An example of this is shown in Fig.

FIG. 7 shows an embodiment of height adjustment of a moving means which can be easily moved in steps according to an embodiment of the present invention.

Referring to FIG. 7, the moving unit 100, which is easy to move in steps, may include the height adjusting unit 140 at a predetermined position of the main body frame 110.

When the moving means 100, which is easy to move stepwise, moves up or down the step, the moving means 100, which is easy to move the step, is forced to be inclined by an angle formed by the step. Accordingly, when the user pushes the moving means 100 which is easy to move the step, the user can easily apply the force due to the change of the center of gravity. Further, if the moving means 100, which is easy to move in steps, is inclined according to the inclination angle of the stairs, there is a danger that the infant or the loaded object may slip out to the outside.

Therefore, according to the present invention, the height adjusting unit 140 is formed at a predetermined position of the main body frame 110, so that the moving unit 100, which is easy to move in steps, It can be implemented so as to maintain an angle close to the horizontal similarly to the relatively flat even if it is inclined. According to an exemplary embodiment, the predetermined position, that is, the position of the height adjuster 140 may be a portion connecting the handle or the rear wheel 130 with the axis of the rear wheel 130. However, The scope is not limited thereto.

In this way, even when the moving means 100, which is easy to move step by step, moves the step by the height adjusting portion 140, the infant or the loaded object on the moving means 100, And the user pushing the moving means 100, which is easy to move the step, can also apply the force more stably and easily.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

Claims (9)

A body frame having a support structure formed by engagement of at least one frame and having a seat or a load part formed on an upper part thereof and at least one front wheel and a rear wheel formed along a running direction at a lower part thereof;
A curved surface portion extending from a front portion of the main body frame and protruding frontward from the front wheel so as to be able to rise along a stepped edge which is touched by a pushing force of a user; And
And a sliding part connected to the curved surface part through a connection part and formed to be elongated in the traveling direction between the front wheel and the rear wheel on the lower part of the main body frame and capable of supporting the main body frame through a step edge, Moving means that is easy to move.
The sliding device according to claim 1,
The folded state is maintained in a folded state in the inner direction of the moving means which is easy to move the step, and when the predetermined pressure is applied to the curved face portion, the folded state is rotated toward the ground by a predetermined angle, Moving means with easy step movement.
The sliding device according to claim 1,
A first sliding part connected to the shaft of the front wheel at one end and coupled to the second sliding part at the other end; And
And a second sliding portion coupled to the shaft of the rear wheel, the other end of the second sliding portion being coupled to the first sliding portion,
And the other end of the first sliding part is fitted into a groove formed by a predetermined length at the other end of the second sliding part so that the length of the sliding part can be adjusted along the groove.
The apparatus according to claim 2,
Further comprising a pushing portion protruding toward the front face at least at a part of the front portion so as to be brought into contact with the edge of the step and being inserted into the connection portion when the pressure is applied to the step edge,
The sliding portion includes:
Wherein the folded state is changed from the folded state to the extended state when the push portion is inserted.
The connector according to claim 2,
Further comprising a buffer for reducing the rotational speed when the sliding portion rotates from the opened state to the folded state.
[3] The apparatus of claim 2,
And the rear wheel is formed to be longer than the front wheel and the rear wheel by a predetermined length toward the ground when the vehicle is in the extended state.
The sliding device according to claim 1,
And the other end is rotatably coupled with a rear wheel shaft connecting between the rear wheels.
The apparatus according to claim 1,
Further comprising a height adjuster capable of adjusting at least one of a handle formed at an upper portion and a height of the upper portion.
A body frame having a support structure formed by engagement of at least one frame and having a seat or a load part formed on an upper part thereof and at least one front wheel and a rear wheel formed along a running direction at a lower part thereof;
A curved surface portion coupled to the main frame and a front wheel support frame to which the front wheel is coupled and protruding forward from the front wheel and rising along a stepped edge that is contacted by a pushing force of a user; And
And a sliding part connected to the curved surface part through a connection part and formed to be elongated in the traveling direction between the front wheel and the rear wheel on the lower part of the main body frame and capable of supporting the main body frame through a step edge, Moving means that is easy to move.



KR1020150063601A 2015-05-07 2015-05-07 Mobility easy to moving from stairway KR20160131363A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020046106A1 (en) * 2018-08-27 2020-03-05 Lim Sau Kong Mechanism of smooth stair climbing for hand truck/trolley

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040110603A (en) 2003-06-19 2004-12-31 동 현 이 Stairs elevating device of a transfer mechanism with two rows of a belt-type wheels formed by combining a belt around rollers arranged densely
KR20090107883A (en) 2008-04-10 2009-10-14 주식회사 글로벌모터스 Elevated Place Lift Apparatus for Transfer Means

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040110603A (en) 2003-06-19 2004-12-31 동 현 이 Stairs elevating device of a transfer mechanism with two rows of a belt-type wheels formed by combining a belt around rollers arranged densely
KR20090107883A (en) 2008-04-10 2009-10-14 주식회사 글로벌모터스 Elevated Place Lift Apparatus for Transfer Means

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020046106A1 (en) * 2018-08-27 2020-03-05 Lim Sau Kong Mechanism of smooth stair climbing for hand truck/trolley

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