KR200488592Y1 - Cart - Google Patents

Abstract

The present invention relates to a cart, which can be folded or unfolded in a simple manner, and is intended to be able to greatly reduce its size when folded.
The cart according to the present invention is characterized in that the cart includes brackets including four brackets arranged at intervals in the front, rear, left and right directions and wheels provided under the brackets; A vertical bar portion provided at an upper portion of the bracket portion; A link portion rotatably coupled between the bracket portions and connecting the bracket portions diagonally, the link portions forming a bottom by arranging four link members in an X shape; And a side portion which is rotatably coupled between the bracket portion and connects the bracket portion to the outside of the link portion to form an edge of the bottom portion, and the link portion and the side portion are rotated by the rotation operation, The side portion is folded or unfolded, and the link member and the side portion are folded or unfolded, and the bracket portion and the vertical bar portion are gathered or separated in one place.

Description

Cart {CART}

The present invention relates to a cart, and more particularly, to a cart which can be moved with a person or an object, and which can be easily folded or unfolded.

Generally, a baby carriage is constituted by a wheel rolling on the ground, a frame extending upward from the wheel, and a seat portion coupled to the frame and capable of carrying infants.

And, the handle is provided in the frame, and the protector can hold the handle and push or pull the infant in the seat portion, so that the baby carriage can be moved forward or backward.

However, such a baby carriage has a problem that it is difficult to load other kinds of loads other than infants and to use it for various other purposes.

In addition, the conventional baby carriage has a complicated structure and can not be easily folded or unfolded.

In addition, since the conventional stroller can not be reduced in size when it is folded, the stroller can not be easily carried when it is stored in a trunk or a warehouse of a vehicle.

Patent Registration No. 1161855 (June 26, 2012) Patent Registration No. 1735537 (Aug.

It is an object of the present invention to provide a cart which can be folded or unfolded in a simple manner and which can be greatly reduced in size when folded.

The cart according to the present invention includes: a bracket portion including four brackets disposed at intervals in front, rear, left, and right directions; and a wheel installed at a lower portion of each of the brackets; A vertical bar portion provided at an upper portion of the bracket portion; A link portion rotatably coupled between the bracket portions and connecting the bracket portions diagonally, the link portions forming a bottom by arranging four link members in an X shape; And a side portion which is rotatably coupled between the bracket portion and connects the bracket portion to the outside of the link portion to form an edge of the bottom portion, and the link portion and the side portion are rotated by the rotation operation, The side portion is folded or unfolded, and the link member and the side portion are folded or unfolded, and the bracket portion and the vertical bar portion are gathered or separated in one place.

The vertical bar portion may include a pair of front vertical bars and rear vertical bars respectively installed on the brackets positioned in front of and behind the link portion, a lift bar installed to be vertically movable in the front vertical bar and the rear vertical bar, And a lifting portion mounted on the lifting bar, the lifting portion being rotatably connected to the guard portion and being lifted and lowered together with the lifting bar when the guard portion is folded or unfolded.

Further, the cart is disposed on front, rear, left, and right sides of the cart, and is rotatably coupled between the bracket portion and the vertical bar portion, and a guard portion that is folded in cooperation with the rotation operation of the link member Wherein the guard portion can be folded or unfolded at the same time as the link member and the side portion are folded or unfolded.

The cart may further include a hinge coupling portion hinged to the bracket portion so that one side thereof is rotatable, and a hinge coupling portion hinged to the link member such that a portion of the end portion of the linkage member is vertically rotatable.

The cart may further include a support portion for supporting a bottom surface of the link portion, wherein the support portion is horizontally disposed at an interval between the both guard portions located on the left and right sides, and two A support member; An additional hinge coupling portion hinged to a lower side of a guard portion located on the left and right sides and hinged to one end of the support member so that one end of the support member is rotatable; And a joint portion rotatably coupled to the opposite end of the support member to allow the support member to be folded or unfolded when the bracket and the vertical bar are brought close to or away from each other.

The support portion may further include a fixing portion formed on the upper surface of the joint portion at predetermined intervals to fix the center of the link portion when the support member is unfolded.

The guard portion may be formed on both sides of the additional hinge coupling portion to define a stopper that limits the rotation range of the additional hinge coupling portion.

The cart according to the present invention can be folded or unfolded in a convenient manner and the various components such as the bracket portion, the link portion, the vertical bar portion, the side portion, and the guard portion spread in all directions can be folded together so that they can be folded together. There is an effect that the size can be greatly reduced.

Since the cart according to the present invention can be greatly reduced in size when folded, it can be easily stored in a storage place such as a trunk or a warehouse of a vehicle, thereby maximizing the utilization of space in a storage place, It is also possible to enter branches in a restaurant or a house, thereby preventing a stolen accident, and it is easy to carry.

1 and 2 are perspective views showing a cart according to the present invention.
3 is a side view showing the cart according to the present invention;
4 is a front view showing the cart according to the present invention;
5 is a plan view showing the cart according to the present invention;
6 and 7 are perspective views showing a process of folding carts according to the present invention.
Fig. 8 is a perspective view showing the arrangement relationship of the additional hinge engaging part and the stopper applied to the cart according to the present invention; Fig.
Fig. 9 is a front view showing the arrangement relationship of the additional hinge engaging part and the stopper applied to the cart according to the present invention; Fig.
10 and 11 are front views showing an operating state of the additional hinge engaging part applied to the cart according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings.

It should be understood, however, that the present invention is not limited to the embodiments disclosed herein but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, To the person having the invention, and this invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, the present invention will be described with reference to the drawings for explaining a cart according to embodiments of the present invention.

3 is a side view showing a cart according to the present invention, FIG. 4 is a front view showing a cart according to the present invention, and FIG. 5 is a front view showing the cart according to the present invention 6 and 7 are perspective views showing a process of folding the cart according to the present invention, and FIG. 8 is a plan view showing the arrangement relationship of the additional hinge engaging part and the stopper applied to the cart according to the present invention 9 is a front view showing an arrangement relationship of the additional hinge engaging part and the stopper applied to the cart according to the present invention and Figs. 10 and 11 are views showing the operation state of the additional hinge engaging part applied to the cart according to the present invention Fig.

The present invention is a cart 1 on which a person can be loaded or loaded, can be easily folded or unfolded, and can be easily stored in a storage place such as a trunk or a warehouse of a vehicle, , So that it is easy to carry.

To this end, the cart 1 according to the present invention includes a plurality of bracket parts 10, a vertical bar part 20 provided on the upper part of the bracket part 10, a link part 20 connecting the bracket part 10 diagonally, And a guard portion 50 which includes a side portion connecting the bracket portion 10 from the outside and further prevents falling of the occupant or the load.

The link portion 30 is rotatably coupled between the bracket portions 10 and connects the bracket portions 10 diagonally by combining the four link members 31 in the shape of an 'X' 1) is formed in an 'X' shape. The link portion 30 includes four link members 31 arranged in an 'X' shape and connecting the bracket portions 10 diagonally, and a pair of link members 31, And a link joint 40 that hinges the link members 31 to allow the four link members 31 to be gathered together or unfolded into an 'X' character.

The side part is rotatably coupled between the bracket parts 10 and connects the bracket parts 10 with the bracket parts 10 as apexes. The side part forms the bottom edge of the cart 1. The side portions connect the bracket portions 10 to each other outside the link portion 30, and the four side portions form a quadrangle when viewed from above. These side portions include two side members 70 connecting the bracket portions 10 and a joint portion 80 connecting the two side members 70 at the center. The joint portion 80 can hinge-connect the opposite ends of the side members 70 at the center from the center so that the two side members 70 can be gathered together or unfolded in a straight line.

The link portion 30 and the side portion can be folded or unfolded by the rotation operation of the link portion 30 and the side portion. The link part 30 and the side part are folded or unfolded, and at the same time, the bracket part 10 and the vertical bar part 20 are gathered or separated in one place, so that the cart 1 according to the present invention is completely folded or unfolded .

The bracket portion 10 may include four brackets 11 arranged at intervals in the front, rear, left and right directions, and a wheel 12 installed at a lower portion of each bracket.

The bracket 11 is connected to various components such as the vertical bar portion 20, the link portion 30, the handle 26, the guard portion 50, and the side portion constituting the present invention. So as to form the vertexes of the bottom portion of the cart 1.

In the present invention, the brackets 11 are applicable to a total of four, and are disposed at the vertexes of the bottom portion of the cart 1 at intervals in the front, back, left and right directions.

That is, the two brackets 11 are positioned in front of the cart 1, and the remaining two brackets 11 are positioned behind the cart 1.

The rear of the cart 1 may be one side on which the handle 26 is installed and the front side may be the other side where the handle 26 is not provided. Although the handle 26 is illustrated as being installed on one side of the cart 1, it may be provided both forward and rearward.

The bracket 11 may be formed in a 'C' shape in cross section so as to be suitable for mounting the above-described structures.

In the present invention, the shape of the bracket 11 is not limited to the 'B' shape, and it can be modified into various shapes as long as the structure described above can be easily combined.

An insertion groove is formed in the upper surface of the central portion of the bracket 11 to insert and fix the vertical bar portion 20 and an insertion groove to which the guard portion 50 is inserted and fixed at both ends of the ' The guard portion 50 is connected to the bracket 11 by a hinge in the insertion groove, and is rotated in the vertical direction, and can be folded or unfolded. Further, the side members 70 are hingedly connected to the bracket 11, so that the side members 70 are rotated in the vertical direction, and the side portions can be folded or unfolded.

A pair of brackets 11 located behind the cart 1 are formed with a rectangular pipe-shaped fastener 111 to which the lower side of the handle support frame 261 constituting the handle 26 is fixed.

A wheel 12 is installed under the bracket 11 so that the cart 1 can be easily moved to a desired position.

Two wheels 12 positioned in front of the cart 1 are rotatably coupled to the bracket 11 so that the cart 1 can be selectively moved forward and backward.

The vertical bar portion 20 includes two front vertical bars 21 positioned in front of the cart 1, two rear vertical bars 22 located behind the cart 1, And a lift part 24 mounted on the elevation bar 23 and capable of folding or unfolding the guard part 50 .

The front vertical bar 21 and the rear vertical bar 22 are connected to the bracket 11 in a one-to-one relationship to form a skeleton of the cart 1 together with the link portion 30 and the guard portion 50.

Therefore, the front vertical bar 21 and the rear vertical bar 22 may be made of metal, stainless steel, or aluminum material having excellent rigidity and durability.

The front vertical bar 21 and the rear vertical bar 22 are formed in the shape of a circular pipe or a polygonal pipe having an open upper surface and an empty space formed therein and the elevating bar 23 can be inserted therein, Can be fixed through a fixing device such as a bolt and a nut in a state of being inserted into the insertion groove of the body 11.

The elevating bar 23 is inserted into the inner space of the front vertical bar 21 and the rear vertical bar 22 so that its outer diameter is slightly larger than the inner diameters of the front vertical bar 21 and the rear vertical bar 22 And can be freely lifted and lowered from the front vertical bar 21 and the rear vertical bar 22.

Each of the elevating bars 23 protrudes upward from the front vertical bars 21 and the rear vertical bars 22 and the extended and folded operations of the guard portions 50 are provided on the protruding portions. And an elevating portion 24 for guiding is mounted.

At this time, the upper side of the lifting bar 23 also protrudes to the upper side of the elevating part 24, and a spiral may be formed on the outer circumference of the protruding part. Since the elevating bar 23 and the vertical bars 21 and 22 are formed with empty spaces therein, a lid supporting bar (not shown) for inserting a fabric or a vinyl lid can be inserted into the upper portion of the cart, A separation prevention cap 25 for supporting the weight of the lid can be mounted by preventing the lid support bar (not shown) from being raised and lowered by disengagement and screwing.

Grooves for inserting the guard portions 50 may be formed on both sides of the elevating portion 24. [

At this time, the grooves are opened to the side and the bottom, and the guard portion 50 is hinged in the downward direction of the elevating portion 24.

An elevating unit 241 is integrally formed on the pair of elevating portions 24 located at the rear of the cart 1 so as to be vertically mounted on the outer periphery of the handle supporting frame 261.

When the guard portion 50 is opened by this structure, the elevating bar 23 and the elevating portion 24 descend together. On the contrary, when the guard portion 50 is folded, the elevating bar 23 and the elevating portion 24 are raised together.

The elevating portion 24 is provided with a vertical bar portion 20 and a guard portion 50 so as to be able to rotate one end of the guard portion 50. Similarly to the bracket 11 forming a part of the bottom portion, But may be formed in the form of a bracket having a hinge.

The link portion 30 is rotatably coupled between the brackets 11, and a plurality of link members are combined in an X-shape to form a bottom portion. The link portion 30 has a function of supporting a load of a loaded object or a passenger .

Therefore, the link portion 30 may be made of a metal material (steel, aluminum, or the like) or stainless steel material excellent in rigidity and durability so as not to be broken by a load or other external force of an occupant or an object, have.

In addition, the link portion 30 connects the four brackets 11 in a diagonal direction and collects or separates the bracket 11 and the vertical bar portion 20 in one place through an upward / , And folds or unfolds the cart 1 according to the present invention.

Specifically, the link portion 30 may be formed by combining four link members 31 formed in a bar shape in an X-shape.

The link members 31 are hinge-coupled to the link joint 40 in such a manner that one ends thereof facing each other are rotatable upward and downward while being separated from each other, and the other end thereof is coupled to the bracket 11, Can be hingedly folded or unfolded so as to be rotatable in the upward and downward directions.

The link joints 40 connect the ends of the link members 31 so that the link members 31 are rotatable and the bracket 10 and the vertical bar 20 are rotated by the rotation of the link members 31 Let them gather in one place or separate. The link joint 40 includes four engaging pieces 42 surrounding the top and both sides of one end of each link member 31 and may further include a body 41. Here, the body portion 41 is formed in a substantially rectangular block shape. The engaging pieces 42 extend from the four corners of the body 41 so as to have a predetermined inclination angle so as to cover the upper surface and both sides of the one end of the link member 31. The engaging piece 42 is formed in a substantially U-shaped cross section of a portion to be engaged with the link member 31 so as to enclose the upper surface and both side surfaces of the one end of the link member 31, An empty space is formed. The opposite ends of the link members 31 are hingedly coupled to the respective engaging pieces 42 with the bottom surface being opened so that the respective link members 31 are rotated and unfolded into the X- The link joint portion 40 may be centered so that the link joint portion 40 can be assembled with each other. When the link joint portion 40 is pushed downwardly and unfolded, all of the opposite ends of the link member 31 rotate in a state of being drawn into the link joint portion 40 and come in contact with the sealed upper surface of the engagement piece 42 It is possible to support the load of the occupant or the object because it is unfolded in the 'X' direction without any further rotation.

Each of the hinge-engaging portions 60 is coupled to be rotatable about an engaging hole 112 included in each of the brackets 11.

More concretely, the coupling holes 112 are formed in the 'b' shape of the bracket 11 toward the central portion side of the plane on which the four brackets 11 arranged at intervals are arranged in the front, rear, left, And may be formed to protrude from the central portion of the folded inner edge.

One side of each hinge coupling part 60 is hinged to the bracket part 10 so as to be rotatable about the coupling hole 112, and the other side is formed to extend toward the inner center part side.

At this time, an end portion of the link member 31 is coupled to the other side of each hinge coupling portion 60 so as to be vertically rotatable.

At this time, a bent portion may be formed between one side of the hinge coupling portion 60 and the other side.

That is, the hinge coupling part 60 is formed to extend from one side of the hinge coupling part 60, which is rotatably coupled to the coupling hole 112, toward the inner center part, and the hinge coupling part 60 is bent An additional portion may be formed.

The bending portion is for allowing the link member 31 to smoothly move (e.g., rotate or pivot) between the hinge coupling portion 60 and the link joint portion 40.

That is, the hinge engaging portion 60 performs the joint function with respect to the link member 31 by the rotational operation of the hinge engaging portion 60 itself and the turning operation of the link member 31. [

The hinge engaging portion 60 performing the joint function may be formed in various shapes. For example, the hinge engaging portion 60 is formed in a substantially 'C' -shaped shape so that one side of the hinge engaging portion 60 is rotatably coupled to the coupling hole 112 in a closed form, And can be hinged to be opened so as to be vertically pivotable.

The hinge coupling portion 60 is rotatable about the coupling hole 112 and is hinged to the hinge coupling portion 60 such that the link member 31 is pivotally movable in the up and down direction so that the link member 31 is not subjected to resistance or interference So that the coupling member 112 can be rotated about the axis and can be folded or unfolded while rotating smoothly in the vertical direction.

Since the link member 31 is rotatably coupled to the hinge engaging portion 60 and the link joint portion 40 as described above, when the link member 31 is rotated in the upward direction, the link member 31 is folded while being close to each other, It unfolds as it moves away.

Particularly, when the link members 31 are lifted upwards, the four link members 31 are pivoted and folded into a close shape so that four brackets (not shown) 10, the two front vertical bars 21 and the two rear vertical bars 22 are interlocked and gathered in one place.

Therefore, when the cart 1 according to the present invention is folded, its overall size is significantly reduced compared to a conventional cart, which can provide advantages of easy storage and carrying.

The cart 1 according to the present invention includes the bracket portion 10 in the horizontal direction and the side portion supporting the load of the occupant or the object together with the link portion 30. [

Therefore, the side portion may also be made of a metal material (such as iron or aluminum) or stainless steel material excellent in rigidity and durability.

Two side members 70 are horizontally disposed on the side portions of the bracket 11 and spaced from each other between the brackets 11 while the side portions are positioned at the edge of the link portion 30, And the guard portion 50 at the same time.

Referring to FIG. 1, side members 70 are disposed in pairs on front, rear, left, and right sides of the cart. One end of each side member 70 in each direction of the cart is connected to the bracket 11 by a hinge shaft And the other opposite ends of the side members 70 are hingedly coupled to each other via the joint 80 in a state where the opposite ends of the side members 70 are spaced apart from each other by a predetermined distance.

The joint part 80 is formed in a substantially 'C' shape in cross section so that both sides and the bottom face are opened and a hollow space is formed therein, and the opposite ends of the side member 70 are simultaneously wound. These joint portions 80 are disposed at the center of the two side members 70 and serve to pivot the side members 70 so that the side members 70 are gathered together to be completely folded and spaced apart from each other.

The other end facing each side member 70 is hinged to the joint part 80 in a state of being pulled into the joint part 80 and can be rotated in the upward and downward directions.

Therefore, when the brackets 11 and the vertical bar portions 20 are brought close to each other as the link portion 30 is folded, the side member 70 is folded while the joint portion 80 is simultaneously pushed upward When the bracket 11 and the four vertical bars are separated from each other, the joint member 80 is simultaneously pushed downward to unfold the side member 70 as the link unit 30 is unfolded. When the joint 80 is pushed downward, the opposite end of the side member 70 is pivoted in a state of being drawn into the joint 80 and is brought into contact with the closed upper surface of the joint 80, So that the load of the passenger or the object can be supported together with the link portion 30. [

The guard portion 50 is rotatably coupled between the bracket and the vertical bar portion, and is interlocked with the rotation operation of the link member 31 to be folded. The guard portion 50 is disposed in the front, rear, left, and right four sides of the cart 1 in order to prevent the occupant or the loaded object from dropping to the outside. The front and rear guard portions 51, And a side guard portion 52.

The front and rear guard portions 51 are respectively arranged forward and rearward, and are disposed between the front vertical bars 21 and between the rear vertical bars 22, respectively. The side guard portions 52 are also formed on the left and right sides in pairs, and are disposed between the front vertical bar 21 and the rear vertical bar 22 on the left and right sides, respectively.

The front and rear guard portions 51 are arranged so that their central portions are intersected with each other, and their intersection points are fixed through one axis.

Therefore, the front and rear guard portions 51 can perform the spreading operation and the folding operation like the known scissors.

The upper and lower sides of the front and rear guard portions 51 may be hinged to the grooves of the elevating and lowering portions 24 and the insertion grooves of the brackets 11 so as to be pivoted up and down.

The front and rear guard portions 51 are folded or unfolded while the link member 31 is folded or unfolded so that the bracket 11 and the vertical bar are brought close to or apart from each other. And the elevating bars 23 and 24 are gathered or spaced from each other.

On the other hand, the side guard portion 52 includes a first guard member 521 whose upper side is rotatably hinged to the elevation portion 24 located in front of the cart 1, A second guard member 522 rotatably hinged to the bracket 11 located at the rear of the cart 1 and intersecting with the first guard member 521, A third guard member 523 hinged to the lower side of the first guard member 521 so as to be pivotally hinged to the lower side of the first guard member 521 and a bracket 11 located on the rear side of the cart 1, And a fourth guard member 524 hinged to the upper side of the third guard member 523 in such a manner as to be pivotally hinged and intersecting with the third guard member 523, have.

The intersection of the first guard member 521 and the second guard member 522 and the intersection of the third guard member 523 and the fourth guard member 524 are fixed through one axis.

The contact portion between the first guard member 521 and the third guard member 523 is rotatably coupled through a hinge shaft and a portion of the second guard member 522 contacting the fourth guard member 524 So that the side guard portion 52 can perform a spreading operation and a folding operation like a known scissors.

Accordingly, when the link portion 30 is folded or unfolded to close or separate the bracket 11 and the vertical bar portion 20, the side guard portion 52 and the front and rear guard portions 51 are folded or unfolded, The elevating bar 23 and the elevating portion 24 are interlocked and elevated.

Although the center portions of the front and rear guard portions 51 are shown as being arranged so as to intersect with the X-axis along the axis of the front and rear guard portions 51, the front and rear guard portions 51 are not limited to this, and may be of a straight connection The pivoting members may be disposed at the lower portion and the upper portion, respectively. That is, when the link portion 30 is folded or unfolded to close or separate the bracket 11 and the vertical bar portion 20, the front and rear guard portions 51 are folded or unfolded while the lifting bar 23 and the elevation portion 24 Can be interlocked and elevated. The side guard portion 52 is not limited to the structure of the drawing and the lateral guard portion 52 may be formed by folding or unfolding the link portion 30 to close or separate the bracket 11 and the vertical bar portion 20, The elevating bar 23 and the elevating portion 24 may be interlocked with each other and moved up and down.

In addition, the cart 1 according to the present invention may further include a support portion 90 for supporting the bottom surface of the link joint portion 40. The support portion 90 serves to prevent the link portion 30 and the link joint portion 40 from being bent or bent downward due to the load of the passenger or the object.

The support portion 90 may include a support member 91, an additional hinge coupling portion 92, and a joint portion 93.

The support member 91 is disposed at a lower portion of the link joint 40 between the side guard portions 52 located on the side of the support member 91, with two supports spaced from each other. More specifically, the two supports are connected to each other such that the first guard member 521 and the third guard member 523 are in contact with each other across the left and right width of the cart 1 And is disposed at a lower portion of the link joint portion 40 located at the center portion of the link portion 30. [ One end of the support member 91 is connected to the side guard portion 52 through an additional hinge engaging portion 92 to be described later and the other end of the support member 91 facing each other is supported by a joint portion 93 .

8, the additional hinge coupling portion 92 connects the support member 91 to the first guard member 521 at a portion where the first guard member 521 and the third guard member 523 are in contact with each other Sectional shape viewed from the plane is formed in a substantially " C " shape.

One side of the additional hinge engaging portion 92 engaged with the lower side of the side guard portion 52 is rotatable and the other side is hinged to the supporting member 91 so that the supporting member 91 is vertically rotatable.

More specifically, each of the additional hinge engaging portions 92 is disposed on each of the left and right side guard portions 52, and a portion where the first guard member 521 and the third guard member 523 are in contact with each other is defined as an axis And is hinged to the side guard portion 52 so as to be rotatable. The additional hinge coupling portion 92 is hingedly coupled to the support member 91 so as to be pivotable in the upward and downward directions while one side of the support member 91 is inserted into the internal space.

Accordingly, the support portion 90 can rotate with the additional hinge coupling portion 92 and can be rotated up and down.

8 to 11, when the cart 1 is folded or unfolded, the supporting hinge unit 92 is rotated smoothly in the upward and downward directions without any resistance or interference The first guard member 521 and the third guard member 523 are rotatably coupled to a hinge shaft for pivotally connecting the first guard member 521 and the third guard member 523 so as to be folded or unfolded.

When the additional hinge engaging portion 92 is engaged with the first guard member 521 so as not to rotate with respect to the first guard member 521 in the folding or unfolding operation of the cart 1, 1 so that breakage may occur at the connection portion between the first guard member 521 of the side guard portion 52 and the additional hinge coupling portion 92. [

However, as described above, the additional hinge coupling portion 92 is rotatably coupled to the side guard portion 52, so that the auxiliary hinge coupling portion 92 is naturally rotated in the process of folding or unfolding the cart 1, .

The additional hinge coupling portion 92 that performs the joint function may be formed in various shapes. For example, the additional hinge engaging portion 92 is formed in a substantially 'C' shape, and is rotatably coupled to the side guard portion 52 on one side in a closed form, May be hinged to be opened and rotated to be vertically rotated.

A stopper 5211 may be integrally formed on the lower side of the side guard 52 to limit the rotation range of the additional hinge engaging part 92 at a portion where the additional hinge engaging part 92 is engaged.

Specifically, the stopper 5211 is disposed at one side and the other side of the additional hinge engaging portion 92 at each of the first guard members 521 with an interval therebetween. In the process of folding or unfolding the cart 1, The supporting member 91 can be rotated only within a certain angular range between the guard member 50 and the collapsed link member 31 by supporting the additional hinge engaging part 92 to rotate only within a certain range .

On the other hand, the joint portion 93 is formed in a substantially 'C' shape in cross section, and both sides and the bottom surface are opened and an empty space is formed therein. These joint portions 93 are disposed at the center of the support member 91 and serve to pivot the support members 91 together to be completely folded and spaced apart from each other and straightened.

The other side of the support member 91 facing each other is hinged to the joint part 93 and is rotated in the upward and downward directions .

When the bracket 11 and the vertical bar portion 20 are brought close to each other as the link portion 30 is folded, the support member 91 is folded together as the joint portion 93 is pushed upward All. On the contrary, when the bracket 11 and the vertical bar are spaced apart as the link portion 30 is extended, the support member 91 is unfolded while the joint portion 93 is pushed downward. The other side of the support member 91 that is facing the other side of the support member 91 is pivoted while being pulled into the joint part 80 and is brought into contact with the upper surface of the closed part of the joint part 80, So that the load of the passenger or the object can be supported together with the link portion 30. [

When the link portion 30 and the support member 91 are extended, the upper surface of the joint portion 93 is stably fixed to the link joint portion 40, So that the link portion 30 can be prevented from being bent or bent downward due to the load of the passenger or the object.

A fixing portion 931 for fixing the center of the link portion 30 may be formed on both sides of the upper surface of the joint portion 93 when the support member 91 and the link portion 30 are extended. Specifically, the fixing portion 931 may be integrally formed with the joint portion 93 in such a shape as to cover and fix both sides of the body portion 41 of the link joint portion 40.

That is, the fixing portion 931 forms a groove in which the body portion 41 is received and fixed on the upper surface of the joint portion 93, so that the upward movement of the link portion 30 is suppressed, So that the cart 1 can be kept in a unfolded state according to the design.

Next, the operation of the cart according to the present invention and the unique effects appearing in the process will be described.

6, when the user sequentially lifts the link joint portion 40 and the joint portions 80 and 93 to a predetermined height as shown in FIG. 1, the link member 31, the side member 70, and the support member 91 are rotated in the upward direction by a predetermined angle so that they can be easily folded. In this case, the front and rear guard portions 51 and the side guard portions 52 are folded while rotating in conjunction with the operation of the link member 31, the side member 70, and the support member 91.

7, the link member 31, the side member 70, the support member 91, the front and rear guard portions (front and rear), and the rear vertical bar 22 51 and the side guard portion 52 are completely folded.

That is, in the cart 1 according to the present invention, when the link member 31, the side member 70, the support member 91, the front and rear guard portions 51 and the side guard portions 52 are interlocked and folded, Since the bracket 11 and the vertical bars 21 and 22 coupled to the bracket 11 are assembled together with reference to the link joint portion 40, it is possible to provide a merit of collapsing the width and length together .

Moreover, since the present invention can be folded to a size of about 20% to 30% or less of the size when the cart 1 is unfolded, it can be easily stored in a storage place such as a trunk or a warehouse of a vehicle, It is possible to maximize the utilization and to enter the restaurant or the house where the space is narrow, thereby preventing the theft, and it is also possible to provide an advantage that the user can carry it easily.

When the cart 1 is folded, the link member 31, the side member 70, the support member 91, and the link member 31 are pressed downward only by pressing the link joint portion 40 and the joint portions 80 and 93 downwardly. The front and rear guard portions 51 and the side guard portions 52 are unfolded so that the infant or the elderly can easily spread or fold the cart 1 as well as a general adult.

Although not shown in the drawing, the present invention may further include one-touch folding means (not shown) for folding the cart in one-touch fashion.

The one-touch folding means may include a handle (not shown) and an elastic portion (not shown).

The handle may be formed of a string and may be coupled to the body 41.

The elastic portion may be formed of a known coil spring or leaf spring, and may be bent or folded at a predetermined angle.

The elastic portion is composed of three pairs. The two elastic portions are connected to the side member 70 and the joint portion 80 positioned in front of and behind the cart 1, respectively, so that the side member 70 is kept folded at a predetermined angle.

One elastic portion is connected to the support member 91 and the joint portion 93 so that the support member 91 is kept folded at a predetermined angle.

When the person is boarded or loaded on the cart 1, the elastic portion, the side member 70 and the support member 91 are unfolded by a load of a person or an object.

On the contrary, when the person or the object is removed from the cart 1, the elastic part is elastically restored to its original shape, and the side member 70 and the support member 91 positioned at the front and rear of the cart 1 are moved back at a predetermined angle Folded state.

In this state, when the handle is held and lifted up, the link joint part 40 is lifted up so that the front vertical bar 21 and the rear vertical bar 22 are gathered at the center of the cart 1, The side member 70, the support member 91, the front and rear guard portions 51, and the side guard portion 52 are completely folded.

Those skilled in the art will appreciate that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than by the foregoing description, and all changes or modifications derived from the meaning and scope of the claims and equivalents thereof are included in the scope of the present invention Should be interpreted.

1: Cart 10: Bracket part
11: bracket 111: fastener
12: Wheel 13: Coupling port
20: vertical bar 21: forward vertical bar
22: rear vertical bar 23: lift bar
24: elevating part 25: handle
30: link portion 31: link member
40: Link joint part 41: Body part
42: coupling piece 50: guard part
51: front and rear guard portions 52: side guard portions
521: first guard member 5211: stopper
522: second guard member 523: third guard member
524: fourth guard member 60: hinge coupling part
70: side member
80,93: joint 90: support
91: Support member 92: Additional hinge coupling part
931:

Claims (7)

A bracket unit including four brackets arranged at intervals in front, back, left, and right directions, and a wheel installed below the brackets;
A vertical bar portion provided at an upper portion of the bracket portion;
A link portion rotatably coupled between the bracket portions and connecting the bracket portions diagonally, the link portions forming a bottom by arranging four link members in an X shape;
A side portion rotatably coupled between the bracket portions and connecting the bracket portions to the outside of the link portion to form corners of the bottom;
A guard portion disposed on front, rear, left, and right sides of the cart, rotatably coupled between the bracket portion and the vertical bar portion, and folded in cooperation with the rotation operation of the link member;
And a support portion for supporting a bottom surface of the link portion,
The link portion and the side portion are folded or unfolded by the rotation operation of the link member and the side portion, and the link member and the side portion are folded or unfolded while the bracket portion and the vertical bar portion are gathered or spaced in one place,
Wherein the guard portion is folded or unfolded while the link member and the side portion are folded or unfolded,
The support portion
Two support members disposed horizontally with an interval therebetween between left and right side guards and positioned below the link portion;
An additional hinge coupling portion hinged to a lower side of a guard portion located on the left and right sides and hinged to one end of the support member so that one end of the support member is rotatable; And
And a joint portion pivotally coupled to the other opposite end of the support member such that the bracket and the vertical bar can be folded or unfolded when the bracket and the vertical bar are brought close to or away from each other.
delete 2. The cart according to claim 1,
Wherein the link member is hinged to the bracket portion so that one side is rotatable, and the other side further comprises a hinge engaging portion hinged to the link member so that a part of the end portion of the link member is vertically rotatable.
delete The apparatus according to claim 1,
Further comprising a fixing portion formed at an upper surface of the joint portion at predetermined intervals to fix a center of the link portion when the support member is unfolded.
The method according to claim 1,
Wherein the guard portion is located at both sides of the additional hinge engagement portion and has a stopper for limiting a rotation range of the additional hinge engagement portion.
The method according to claim 1,
The vertical bar portion
A pair of front vertical bars and rear vertical bars respectively installed on the brackets positioned forward and rearward of the link portion;
A lifting bar vertically installed on the front vertical bar and the rear vertical bar; And
And a lifting portion mounted on the lifting bar and connected to the guard portion so as to be pivotable so that the guard portion is lifted and lowered together with the lifting bar when folding or unfolding the guard portion.

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