KR101731069B1 - Handcart reducing burden of weight - Google Patents

Abstract

The present invention relates to a pedestal in which objects are loaded on an upper surface thereof; A vertical support vertically formed at the center of the pedestal; And a first wheel coupled to the first wheel support coupled to the vertical support, the brake pad contacting the ground before the pedestal when the angle between the pedestal and the ground is reduced; And a second wheel assembly positioned below the pedestal and capable of adjusting the angle with respect to the ground.

Description

HANDCART REDUCING BURDEN OF WEIGHT}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a cart that reduces weight.

Generally, carts or carts are mainly used to transport goods from a vehicle to a nearby location. Such carts or carts typically comprise a pair of wheels and a pedestal on which the cargo is loaded in front of the wheels, and a vertical support for supporting the cargo loaded behind it. The vertical support is substantially perpendicular to the pedestal, and a handle is provided at an upper end of the vertical support so that the user can easily grasp and move the cart. In particular, the store operator uses various types of shopping carts to facilitate shopping for customers. For example, Korean Patent Laid-Open Publication No. 2013-24447 discloses that a backrest for a child seat is prevented from being bent excessively, Shopping carts were also developed to prevent infant injuries.

Also, the carts or carts are typically made in the form of a metal frame to withstand the weight of the article. Carts or carts are useful when transporting heavy loads of goods. The weight of the cart itself must be light enough to make it easy for the user to carry or use, and the need for carts that can easily be loaded with heavy luggage is increasing.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a hand cart which is easy to carry and has a reduced weight.

Hereinafter, various embodiments described herein will be described with reference to the drawings. In the following description, for purposes of complete understanding of the present invention, various specific details are set forth, such as specific forms, compositions and processes, and the like. However, certain embodiments may not be practiced with one or more of these specific details together, or may be practiced in conjunction with other known methods and forms. In other instances, well-known processes and techniques of manufacture are not described in any detail, in order not to unnecessarily obscure the present invention. Reference throughout this specification to "one embodiment" or "embodiment" means that a particular feature, form, composition, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. Accordingly, the appearances of the phrase " in one embodiment "or" an embodiment "in various places throughout this specification are not necessarily indicative of the same embodiment of the present invention. In addition, a particular feature, form, composition, or characteristic may be combined in any suitable manner in one or more embodiments.

Unless defined otherwise in the specification, all scientific and technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

According to an aspect of the present invention, there is provided a portable terminal including: a pedestal on which an object is placed; A vertical support vertically formed at the center of the pedestal; And a first wheel coupled to the first wheel support coupled to the vertical support, the brake pad contacting the ground before the pedestal when the angle between the pedestal and the ground is reduced; And a second wheel assembly positioned below the pedestal and capable of adjusting the angle with respect to the ground. In one embodiment of the present invention, the brake pad is connected to the vertical support in an upper direction at a lower end of the vertical support, has an inclined surface to face the curvature of the first wheel, . The second wheel assembly includes an angle adjusting hole that is engaged with a distal end of a first screw retainer, and the second wheel assembly includes a rotating shaft that is connected to the pedestal and rotates to adjust an angle, The two-wheel assembly includes a support bar having a guide hole on one side thereof and a guide hole on the other side thereof, and having a first retainer inserted therein and passing through the angle adjustment hole. In addition, the support bar may further include a spring provided in the guide hole, and the first retainer may include a washer at a position spaced apart from the distal end, and can be operated up and down in the guide hole. In one embodiment of the present invention, a third wheel assembly including a guide rail, a first connecting shaft, a second connecting shaft, a connecting member, and a third wheel is additionally provided to the vertical support horizontally, Wherein the guide rail is connected to the vertical support, the first connection shaft and the second connection shaft slide on the guide rail, and the connecting member adjusts an angle between the first connection axis and the second connection axis, And the third wheel engages with the connecting member and rotates on the ground. The guide rail includes a guide wheel that rotates on the guide rail, and an elastic control unit that connects the guide wheel with the first connection shaft or the second connection shaft. The guide rail includes a plurality of fixing holes spaced apart from each other, And a second retainer extending from the elastic control portion is inserted into the fixing hole to fix the position of the first connection shaft or the second connection shaft on the guide rail. Further, the elastic control portion includes a spring inside to insert or pull out the second retainer from the fixing hole. In an embodiment of the present invention, the second wheel assembly includes a lock lever which rotates by turning on a handle; A control lever which is located on the upper portion of the lock lever and rotates about a rotation axis of one side by the lock lever and whose other side is formed in a sawtooth shape; A spring retracted by the rotation of the control lever and located at an upper portion of the control lever; A toothed wheel that engages with a saw tooth shape of the control lever and whose rotational motion is controlled; And a second wheel sharing a rotational axis of the toothed wheel. As the knob is pivoted clockwise or counterclockwise, the lock lever further includes a pivot for controlling rotation. In addition, the brake pad further includes a spring, a fourth wheel support, and a fourth wheel. When the wheelbarrow is vertically erected, the spring is completely contracted, and the fourth wheel is inserted into the brake pad. The brake pad is brought into contact with the ground to generate frictional force, and when the wheelbarrow is tilted, the spring relaxes and exposes the fourth wheel to the outside of the brake pad, and rotates on the ground.

In order to achieve the above object, the present invention provides a method of manufacturing a brake pedal, comprising the steps of: providing a vertical support vertically to one side edge of a pedestal, combining the vertical support and the first wheel, And a step of forming the second wheel assembly so as to adjust the angle between the second wheel assembly and the ground on the lower side of the pedestal. In an embodiment of the present invention, the guide rail is connected to the vertical support, and the first connection shaft and the second connection shaft slide on the guide rail. The angle of the first connection shaft and the second connection axis And a third wheel coupled to the connecting member and rotating on the ground.

In order to accomplish the above object, the present invention provides a method for adjusting the angle of the second wheel assembly so that the second wheel assembly is tilted and fixed on the ground when the cart is tilted according to the present invention, the angle of the third wheel assembly is adjusted so as to touch the ground, Provides a method of using the cart to be stopped by the brake pads when the cart is raised vertically.

The cart having reduced weight according to an embodiment of the present invention has an effect that it can be easily stopped by including a brake pad that touches the ground before the pedestal when the angle between the pedestal and the ground becomes small.

The hand wheel of which weight burden is reduced according to an embodiment of the present invention includes a second wheel assembly disposed below the pedestal using an angle adjusting hole and a retainer and capable of adjusting the angle with the ground, It has the effect of reducing the load burden.

The hand cart with reduced weight load according to an embodiment of the present invention includes a third wheel assembly that can support the vertical wheel from a vertical support, thereby reducing the load burden on the vertical support.

The hand barrel according to another embodiment of the present invention includes a second wheel assembly which is positioned below the pedestal and adjusts the angle with respect to the ground using a toothed wheel and a lever so that the load of the object on the pedestal It has the effect of reducing the burden.

The cart according to another embodiment of the present invention includes a brake pad that contacts the ground before the pedestal is lowered when the angle between the pedestal and the ground becomes smaller, There is an effect of weight dispersion by providing wheels.

1 is a schematic side view showing a cart 100 according to an embodiment of the present invention.
FIG. 2 is a schematic side view illustrating the rotation and fixing of the second wheel angle adjusting unit 120 of the hand bag 100 according to an embodiment of the present invention.
3 is a partial cross-sectional view illustrating a second wheel angle adjusting portion 120, a support bar 130, and a first retainer 140 of the cart 100 according to an embodiment of the present invention.
4 is a schematic side view showing a third wheel adjusting part 150 of the cart 100 according to an embodiment of the present invention.
5 is a schematic side view illustrating the folding of the third wheel adjuster 150 of the hand bag 100 according to an embodiment of the present invention.
6 is a perspective view depicting a third wheel adjuster 150 of the hand bag 100 according to an embodiment of the present invention.
7 is a partial cross-sectional view illustrating a driving method of the third wheel adjusting part 150 of the hand bag 100 according to an embodiment of the present invention.
8 is a schematic side view showing a second wheel angle adjusting unit 220 of the hand bag 200 according to another embodiment of the present invention.
9 is a partial cross-sectional view illustrating a driving method of the brake pad 310 of the handbar 300 according to another embodiment of the present invention.
10 is a partial side view depicting a brake pad 410 of a cart 400 according to another embodiment of the present invention.

Hereinafter, the present invention will be described in more detail with reference to Examples. It will be apparent to those skilled in the art that these embodiments are only for describing the present invention in more detail and that the scope of the present invention is not limited by these embodiments in accordance with the gist of the present invention .

It is also an object of the present invention to provide a hand cart which is easy to carry and has a reduced weight burden.

Example  1: weight bearing Abated  Carts (100)

First, the cart 100 having reduced weight load according to an embodiment of the present invention will be described.

1 is a schematic side view showing a cart 100 according to an embodiment of the present invention. FIG. 2 is a schematic side view illustrating the rotation and fixing of the second wheel angle adjusting unit 120 of the hand bag 100 according to an embodiment of the present invention. 3 is a partial cross-sectional view illustrating a second wheel angle adjusting portion 120, a support bar 130, and a first retainer 140 of the cart 100 according to an embodiment of the present invention. 4 is a schematic side view showing a third wheel adjusting part 150 of the cart 100 according to an embodiment of the present invention. 5 is a schematic side view illustrating the folding of the third wheel adjuster 150 of the hand bag 100 according to an embodiment of the present invention. 6 is a perspective view depicting a third wheel adjuster 150 of the hand bag 100 according to an embodiment of the present invention.

The hand wheel 100 according to an embodiment of the present invention includes a vertical support 10, a pedestal 20, a first wheel support 30, a first wheel 40, a brake pad 110, A support bar 130, a first retainer 140, and a third wheel adjuster 150. The first wheel retainer 120, the support bar 130, the first retainer 140,

The cart (100) according to an embodiment of the present invention includes a pedestal (20) on which an object is placed on an upper surface; A vertical support (10) formed in a direction perpendicular to the center of the pedestal (20); And a first wheel 40 coupled with a first wheel support 30 connecting to the pedestal 20.

The brake pad 110 is connected to the vertical support 10 in the upper direction at the lower end of the vertical support 10 and has an inclined surface facing the curvature of the first wheel 40, And is perpendicular to the lower surface of the support table 10. When the angle formed by the pedestal 20 and the ground becomes smaller, the brake pad 110 touches the ground before the pedestal 20. Accordingly, the brake pad 110 supports the cart 100 in a vertically erect state according to an embodiment of the present invention. The brake pads 110 are provided with a vertical support frame 10 vertically installed in a state where a heavy object is loaded, so that when the wheelbarrow 100 is stopped, frictional force with the ground acts on the brake pads 110, .

The second wheel angle adjusting unit 120 includes an adjusting case 121, a rotating shaft 122, an angle adjusting hole 123, a second wheel support 124, and a second wheel 125. The second wheel angle adjuster 120 may be connected to the pedestal 20 to pivot. Since the center of gravity is inclined toward the vertical support table 10 by the second wheel angle adjustment unit 220 when the vertical support table 10 is vertically erected on the pedestal 20 and the article is placed on the pedestal 20, (10) the risk of spillage of material out. In addition, since the second wheel angle adjuster 120 can support the pedestal 20, it is possible to reduce the load burden of the hand bag 200 felt by the user.

The adjustment case 121 is formed in a fan shape, and a hole is formed at a central angle portion of the fan shape so as to be connected to the rotation shaft 122. The adjustment case 121 includes an angle adjustment hole 123 formed to be spaced apart from each other along the arc. The adjustment case 121 can rotate about the rotation axis 122 and change the angle formed between the pedestal 20 and the second wheel angle adjustment unit 120. The rotation shaft 122 is inserted into a hole of a central angle portion of the adjustment case 121 to connect the pedestal 20 and the second wheel angle adjustment unit 120. The angle adjusting hole 123 is a plurality of holes formed on the adjusting case 121 and spaced apart from each other and formed along the arc of the adjusting case 121. The angle adjusting hole 123 is formed to adjust and fix the angle of the second wheel angle adjusting part 120 with respect to the pedestal 20. The first retainer 140 is inserted into the angle adjusting hole 123.

The second wheel support 124 is connected to the control case 121 at one end and coupled to the second wheel 125 at the other end. The second wheel support 124 is formed in a bar shape and can be moved up and down along the rotation axis 122 on the side of the pedestal 20. Alternatively, the second wheel support 124 may be formed in a plate-like shape, and may be positioned at the center of the lower surface of the pedestal 20 and move up and down along the rotation axis 122, but the present invention is not limited thereto. The second wheel support 124 may be formed to be rotatable with respect to the second wheel 125 so that the second wheel 125 can be folded when the wheelbarrow 100 stops.

The second wheel 125 may extend horizontally from the second wheel support 124 or may be vertically connected to one side of the second wheel support 124.

The supporting bar 130 is inserted into the second wheel angle adjusting part 120 and the supporting bar 130 at the same time so that the first retainer 140 is inserted into the second wheel angle adjusting part 120 and the supporting bar 130 at an angle to be adjusted with respect to the rotation of the second wheel angle adjusting part 120 Respectively. The supporting bar 130 is formed with a hole at one side thereof, and a fixing screw 133 is screwed on the pedestal 20 through the hole. The support bar 130 includes a guide hole 131 on the other side thereof. The support bar 130 is formed such that the first retainer 140 passes through the guide hole 131 and the angle adjusting hole 123. The supporting bar 130 is formed in a bar shape so that one side is engaged with the fixing screw 133 and the other side is in contact with the pedestal 20 and the other upper side is in contact with the second wheel angle adjusting part 120 . Alternatively, the supporting bar 130 may be formed in a curved rod shape, and one side of the supporting bar 130 may be engaged with the fixing screw 133, and the other side of the supporting bar 130 may be in contact with the second wheel angle adjusting unit 120 contacting the pedestal 20 (See FIG. 3). The guide hole 131 is a hole that penetrates the support bar 130 vertically and has an inner side stepped portion to prevent the first retainer 140 having the washer 141 from falling off. The guide hole 131 is not limited to the above-described shape, and it is preferable that the guide hole 131 can prevent the first retainer 140 provided with the washer 141 from falling off.

The first retainer 140 is formed in a threaded shape so that one end of the first retainer 140 can be easily pulled by a hand so as to be fastened to the hole and is prevented from being detached from the guide hole 131 in the vertical direction on the inner side of the guide hole 131 141). The first retainer 140 includes a support spring 132 on a circumferential surface passing through the guide hole 131. The support spring 132 provides an elastic force when the first retainer 140 is vertically operated to be inserted or drawn into the angle adjusting hole 123. It is preferable that the washer 141 is formed on a side surface of the first retainer 140 so as to be positioned in the guide hole 131 and formed in a lower direction of the support spring 132.

Further, an operation lever which can be operated by the user can be mounted on the upper portion of the vertical support 10. It is also possible to connect the wire or the rod to the first retainer 140 to operate the first retainer 140 through the operation lever.

The third wheel adjuster 150 includes a guide rail 151, a first connecting shaft 152, a second connecting shaft 153, a connecting member 154, a third wheel 155, a guide wheel 156, An elasticity control portion 157, a second retainer 158, and a fixing hole 159. [ The third wheel adjuster 150 is installed horizontally with the vertical support 10. The third wheel adjusting part 150 can support the vertical support 10 when the vertical bar 10 is inclined to move the barrel 100 to reduce the load on the barrel 100 felt by the user. .

The guide rails 151 are connected to the vertical support rods 10 to be horizontal. The guide rail 151 is formed in a rectangular shape having a hollow interior and has a rail groove on one side thereof. The guide rails 151 may receive the guide wheels 156 and move up and down along the guide rails 151. The guide rails 151 are provided with a plurality of fixing holes 159 on opposite sides of the rail grooves.

The fixing hole 159 is formed on the side surface of the guide rail 151 opposite to the rail groove. The plurality of fixing holes 159 are formed so as to be spaced apart from each other.

The guide wheels 156 are formed of one pair or two pairs and are connected to the first connection shaft 152 or the second connection shaft 153, respectively. The first connecting shaft 152 and the second connecting shaft 153 are fixed to one end of the guide rail 151 so that the first connecting shaft 152 and the second connecting shaft 153 are fixed to one end of the guide rail 151, Only the connection axis 152 is movable. The guide shaft 156 may be connected to the first connection shaft 152 and the second connection shaft 153 so that the first connection shaft 152 and the second connection shaft 152 The connection shaft 153 is movable. The first connecting shaft 152 and the second connecting shaft 153 are slid on the guide rail 151 through the guide wheels 156. And a guide wheel 156 that rotates and moves on the guide rail 151.

The first connection shaft 152 is formed in a rod shape and has one end connected to the guide wheel 156 and the other end connected to the connection member 154. The second connecting shaft 153 is formed in a rod shape and has one end connected to the guide wheel 156 or fixed to one end of the guide rail 151 and the other end connected to the connecting member 154 do. The first connection shaft 152 and the second connection shaft 153 form a triangular shape together with the guide rail 151 so as to contact the ground when the cart 100 is tilted. This can reduce the load on the user.

The connecting member 154 is coupled to one end of the first connecting shaft 152 and the second connecting shaft 153 and includes a first connecting shaft 152 and a second connecting shaft 153, So that it can act like a hinge. The connecting member 154 is coupled to the third wheel 155 on the other side. The connecting member 154 may further include a locking device for adjusting and fixing the angles of the first connecting shaft 152 and the second connecting shaft 153 therein.

The third wheel 155 is coupled to the connecting member 154 and is rotatable on the ground.

The elastic control unit 157 connects the guide wheel 156 to the first connection shaft 152 or the second connection shaft 153. The elastic control unit 157 may be configured to rotate by acting as a hinge with the first connection shaft 152 and the second connection shaft 153 facing each other with the connecting member 154 as a rotation axis. The elastic control unit 157 is connected to an inner side surface of the guide wheel 156 with a disc-shaped member which can rotate separately from the guide wheel 156, and a quadrangular groove is formed inside the disc- . And a part of the spring and elasticity control part 157 is inserted into the square-shaped groove. The elastic control unit 157 may include a spring inward to allow the second retainer 158 to be inserted or withdrawn from the fixing hole 159 by an elastic force.

The second retainer 158 extends from the elastic control unit 157 and is inserted into the fixing hole 159 of the guide rail 151 so that the first connecting shaft 152 or the second connecting shaft 153, To fix the position of. The second retainer 158 pulls the first connecting shaft 152 or the second connecting shaft 153 in the direction of the connecting member 154 and moves the fixing hole 159 when the spring of the elasticity controlling unit 157 is completely contracted. As shown in FIG.

Example  2: weight bearing Abated  Carts (200)

The hand-held bar 200 in which the weight load according to the embodiment of the present invention is reduced will be described.

8 is a schematic side view showing a second wheel angle adjusting unit 220 of the hand bag 200 according to another embodiment of the present invention.

1 to 7, a cart 200 according to another embodiment of the present invention includes a vertical support 10, a pedestal 20, a first wheel support 30, a first wheel 40, A second wheel angle adjusting unit 220, and a third wheel adjusting unit 150. The second wheel angle adjusting unit 220 and the third wheel angle adjusting unit 150 may be formed as a single unit. The handlebar 200 according to another embodiment of the present invention has different structures of the hand wheel 100 and the second wheel angle adjuster 220 according to the first to seventh embodiments. Therefore, the hand wheel 200 according to another embodiment of the present invention will be described below with reference to the second wheel angle adjusting unit 220. Further, parts of the cart 200 that are the same as or similar to those of the cart 100 according to Figs. 1 to 7 are denoted by the same reference numerals, and detailed description thereof is omitted herein.

The second wheel angle adjuster 220 includes an adjustment case 221, a first gear 222, a second gear 223, a control lever 224, a lock lever 225, a pivot 226, And a spring 227. The second wheel angle adjuster 220 may be connected to the pedestal 20 to pivot. The center of gravity is tilted toward the vertical support 10 by the second wheel angle adjusting unit 220 when the vertical support 10 stands upright to the ground and stops at the vertical support 10 ) Can reduce the risk of spillage outside. In addition, the second wheel angle adjuster 220 can support the pedestal 20, thereby reducing the load burden of the hand bag 200 felt by the user. The second wheel angle adjusting unit 220 includes a second gear 223 that rotates the knob 225a and is capable of multi-step control on the rotation shaft 223a. The second wheel 223 is engaged with the second gear 223, A control lever 224 that controls the gear 223 in one direction and controls it in the opposite direction and a lock lever 225 that prevents the control lever 224 from engaging or disengaging the second gear 223, .

The handle 225a is formed to extend from the lock lever 225 so as to protrude from the outer surface of the control case 221. [ Further, the handle 225a is preferably formed to be biased toward the 'C' in the center of the upper surface of the lock lever 225. The handle 225a is formed so as to rotate in the 'A' or 'B' direction. Accordingly, the lock lever 225 is also formed so as to rotate in the 'A' or 'B' direction.

The lock lever 225 is formed to be fixed to the adjustment case 221. When the lock lever 225 is rotated in the clockwise direction, the lock lever 225 is formed to pivot the control lever 224 in the 'A' direction.

The pivot 226 is installed in the adjustment case 221 and serves to support the lock lever 225 so that it is no longer pushed in the 'B' direction.

One side of the control lever 224 is formed in the same sawtooth shape as the second toothed wheel 223 and meshed with the second toothed wheel 223 and the other side of the control lever 224 is connected to the rotation axis 224a of the control lever 224 In the 'A' or 'B' direction. The control lever 224 is always configured to receive a force in the 'B' direction due to the tension of the spring 227 positioned in the 'A' direction.

When the knob 225a rotates in the 'A' direction, the lock lever 225 rotates clockwise to rotate the control lever 224 in the 'A' direction. Then, the control lever 224 is separated from the second toothed wheel 223, so that the rotation of the second toothed wheel 223 is free.

The second gear 223 is rotated in the 'A' direction or the 'B' direction by the rotation of the knob 225a provided on the adjustment case 221. [ When the knob 225a is pulled in the 'B' direction, the second gear 223 in contact with the control lever 224 is rotated in the 'A' direction. On the contrary, when the knob 225a of the brake lever 13 is placed, the knob rotates in the 'A' direction and the second gear 223 in contact with the control lever 224 rotates in the 'B' direction.

One end of the second wheel support 124 is coupled to the rotation axis 222a of the first toothed wheel 222. The first toothed wheel 222 is formed to engage with the second toothed wheel 223.

Alternatively, the first gear 222 may be coupled to one end of the second wheel support 124 without the second gear 222 being connected to the rotation axis 223a of the second gear 223.

Example  3: Weight bearing Abated  Carts (300)

The cart 300 with reduced weight burden according to an embodiment of the present invention will be described.

9 is a partial cross-sectional view illustrating a driving method of the brake pad 310 of the handbar 300 according to another embodiment of the present invention.

1 to 7, the hand cart 300 according to another embodiment of the present invention includes a vertical support 10, a pedestal 20, a first wheel support 30, a first wheel 40, A pad 310, a second wheel angle adjusting unit 120, and a third wheel adjusting unit 150. [ In the hand cart 300 according to another embodiment of the present invention, the structures of the hand bag 100 and the brake pads 310 according to FIGS. 1 to 7 are formed differently. Accordingly, the hand cart 300 according to still another embodiment of the present invention will be described with reference to the brake pad 310. FIG. In addition, the cart 300 uses the same reference numerals as those of the cart 100 according to Figs. 1 to 7 and the cart 200 according to Fig. 8, and a detailed description thereof will be omitted.

The brake pad 310 includes a spring 311, a fourth wheel support 312, and a fourth wheel 313 therein.

The brake pad 310 is connected to the vertical support 10 in the upper direction from the lower end of the vertical support 10 and has an inclined surface facing the curvature of the first wheel 40, And is perpendicular to the lower surface of the support table 10. When the angle between the pedestal 20 and the ground becomes smaller, the brake pad 310 touches the ground before the pedestal 20. Accordingly, the brake pad 310 supports the cart 300 in a vertically erect state according to an embodiment of the present invention. The brake pads 310 are formed such that when the angle between the pedestal 20 and the ground increases, the fourth wheel housed in the brake portion 310 is exposed and can rotate on the ground. The brake pads 310 can easily stop the cart 300 when the cart 300 is stopped by setting the tilted vertical support 10 vertically with the heavy object loaded thereon, .

When the hand wheel 300 is vertically stopped, the spring 311 is completely contracted and the fourth wheel 313 is received in the brake pad 310, so that the brake pad 310 touches the ground, Occurs.

The spring 311 is relaxed and the fourth wheel 313 is exposed to the outside of the brake pad 310 to reduce the load imposed on the first wheel 40 have.

Example  4: weight bearing Abated  Carts (400)

The cart 400 having a reduced weight burden according to an embodiment of the present invention will be described.

10 is a partial cross-sectional view illustrating a driving method of the brake pad 410 of the handbar 400 according to another embodiment of the present invention.

1 to 7, the hand cart 400 according to another embodiment of the present invention includes a vertical support 10, a pedestal 20, a first wheel support 30, a first wheel 40, A second wheel angle adjusting unit 120, and a third wheel adjusting unit 150. The first wheel angle adjusting unit 120, the second wheel angle adjusting unit 120, The hand cart 400 according to another embodiment of the present invention has different structures of the hand bag 100 and the break part 410 according to FIGS. 1 to 7. Therefore, the cart 400 according to another embodiment of the present invention will now be described with reference to the brake portion 410. In addition, the cart 400 uses the same reference numerals as those of the cart 100 according to Figs. 1 to 7 and the cart 200 according to Fig. 8, and a detailed description thereof will be omitted.

The brake unit 410 is connected to the vertical support 10 in the upper direction at the lower end of the vertical support 10 and has an inclined surface facing the curvature of the first wheel 40, And is perpendicular to the lower surface of the support table 10. When the angle between the pedestal 20 and the ground becomes smaller, the brake unit 410 touches the ground before the pedestal 20. Accordingly, the brake unit 410 supports the cart 400 in a vertically erect state according to an embodiment of the present invention. When the angle between the pedestal 20 and the ground becomes large, the brake unit 410 is formed so that the fourth wheel 414 accommodated in the brake unit 410 is exposed and can rotate on the ground. The brake unit 410 can stop the cart 400 with a frictional force with the ground when stopping the cart 400 by vertically setting the tilted vertical support 10 in a state where a heavy object is loaded, .

The brake portion 410 includes a support pad 411, a fixing portion 412, a first wheel brake 413, a fourth wheel 414, and a spring 415.

The support pad 411 is connected to the vertical support 10 in a direction from a lower end of the vertical support 10 to an upper direction. When the angle between the pedestal 20 and the paper surface becomes small, the support pad 411 touches the paper surface before the pedestal 20. Accordingly, the support pads 411 support the cart 400 in a vertically erect state according to an embodiment of the present invention. The support pads 411 are formed in a hole at the center of the upper surface, and the holes are formed at a certain depth from the upper surface, and can receive the first wheel brakes 413. In addition, the support pad 411 is formed in a hole shape at the center of the lower surface, and the hole is formed up to a certain height from the lower surface, and the fourth wheel 414 can be received. The support pads 411 are formed in the shape of a diaphragm in which the hole at the center of the upper surface and the hole at the center of the lower surface are not connected to each other but the inside is blocked. A hole having a diameter smaller than that of the holes may be formed so that the first wheel brake 413 passes through the center of the diaphragm.

The fixing portion 412 may be screwed to engage the vertical support 10 and the supporting pad 411, but is not limited thereto.

The first wheel brake 413 is formed in a stepped shape such that the upper portion of the first wheel brake 413 faces the curvature of the first wheel 40 and the center circumferential surface of the first wheel brake 413 is received in the support pad 411, Like shape. The first wheel brake 413 is coupled to the fourth wheel 414 at the lower end.

The fourth wheel 414 is coupled to the lower end of the first wheel brake 413 and the diameter of the fourth wheel 414 may be smaller than the diameter of the lower center hole of the support pad 411. The fourth wheel 414 may be configured such that when the wheelbarrow 400 according to the present invention is vertically erected and stopped, the fourth wheel 414 is received in the support pad 411 so that the support pad 411 contacts the ground Frictional force is generated. The fourth wheel 414 is exposed to the outside of the support pad 411 when the wheelbarrow 400 according to the present invention is tilted and the fourth wheel 414 is exposed to the outside of the support pad 411, The load can be reduced.

The spring 415 surrounds the lower circumference of the first wheel brake 413 and is located at the upper portion of the fourth wheel 414. [ The spring 415 is located between the spring 415 and the fourth wheel 414 so as not to interfere with the rotation of the fourth wheel 414 when the wheelbar 400 according to the present invention is running, A disc-shaped bracket projecting from the brake 413 may be further included. The spring 415 allows the fourth wheel 414 to be accommodated in the support pad 411 or exposed to the outside by an elastic force.

The wheelbarrow 400 according to the present embodiment has the effect of enhancing the frictional force with the ground surface by including the brake portion 410 and also functioning as a brake by directly contacting the first wheel 40. [

10: vertical support 20: pedestal
30: first wheel support 40: first wheel
110, 310: Brake pad 120, 220: Second wheel angle adjusting section
130: support bar 140: first retainer
150: third wheel regulating portion

Claims (17)

A pedestal on which objects are placed on the upper surface;
A vertical support vertically formed at the center of the pedestal; And
And a first wheel coupled to a first wheel support coupled to the vertical support,
A brake pad that touches the ground before the pedestal when the angle between the pedestal and the ground is small; And
A second wheel assembly positioned below the pedestal and capable of adjusting an angle with the ground,
And the second wheel assembly includes a rotation shaft connected to the pedestal and rotated to adjust an angle. The method according to claim 1,
Wherein the brake pad is connected to the vertical support in an upper direction at a lower end of the vertical support and has an inclined surface facing the curvature of the first wheel and the lower surface is perpendicular to a lower surface of the vertical support. The method according to claim 1,
Wherein the second wheel assembly has an angle adjusting hole that is engaged with a distal end of a first retainer having a screw shape, and one side of the second wheel assembly is screw-engaged with the pedestal. delete The method of claim 3,
Wherein the second wheel assembly includes a support bar having a guide hole on the other side thereof, the support bar having the first retainer inserted therein and passing through the angle adjustment hole. 6. The method of claim 5,
Wherein the support bar further comprises a spring provided in the guide hole, the first retainer including a washer at a position spaced apart from the distal end, the handle being vertically movable within the guide hole. The method according to claim 1,
A third wheel assembly including a guide rail, a first connecting shaft, a second connecting shaft, a connecting member, and a third wheel is further provided on the vertical support in a horizontal direction,
Wherein the guide rail is connected to the vertical support, the first connection shaft and the second connection shaft slide on the guide rail, and the connection member adjusts an angle formed by the first connection axis and the second connection axis And the third wheel engages with the connecting member and rotates on the ground. 8. The method of claim 7,
And a elastic control part having a guide wheel that rotates on the guide rail and connects the guide wheel to the first connection shaft or the second connection shaft. 9. The method of claim 8,
And a second retainer extending from the elastic control portion is inserted into the fixing hole to guide the first connection shaft or the second connection shaft on the guide rail, A cart fixed in position. 10. The method of claim 9,
Wherein the elastic control portion includes a spring inwardly to insert or withdraw the second retainer from the fixing hole. The method according to claim 1,
The second wheel assembly
A lock lever which rotates by turning on a handle;
A control lever which is located on the upper portion of the lock lever and rotates about a rotation axis of one side by the lock lever and whose other side is formed in a sawtooth shape;
A spring retracted by the rotation of the control lever and located at an upper portion of the control lever;
A toothed wheel that engages with a saw tooth shape of the control lever and whose rotational motion is controlled; And
And a second wheel sharing a rotation axis of the cog wheel. 12. The method of claim 11,
Wherein the lock lever further comprises a pivot for controlling rotation as the handle is rotated clockwise or counterclockwise. 3. The method of claim 2,
The brake pad further includes a fourth wheel support, a spring, and a fourth wheel therein,
When the wheelbarrow is vertically erected, the spring is completely contracted, the fourth wheel is received in the brake pad, the brake pad hits the ground to generate frictional force, and when the wheelbarrow tilts, And the fourth wheel is exposed to the outside of the brake pad, and is rotated on the ground. 3. The method of claim 2,
The brake pad is coupled to the vertical support. The support pad having the lower surface perpendicular to the lower surface of the vertical support has an inclined surface such that the upper surface thereof is opposed to the curvature of the first wheel, and the center peripheral surface is received in the support pad. A fourth wheel coupled to a lower end of the first wheel brake, and a spring disposed on a lower portion of the first wheel brake and an upper portion of the fourth wheel,
Wherein the first wheel brake is formed to be able to move up and down within the support pad, and the first wheel can be further stopped. delete delete The second wheel assembly is tilted and fixed so as to touch the ground when the cart is tilted,
The third wheel assembly is angled and fixed so as to touch the ground,
When the cart is raised vertically, it is stopped by the brake pads,
The method as claimed in claim 1, wherein the second wheel assembly includes a rotation shaft connected to the pedestal and rotated to adjust an angle.

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