KR20160017554A - Hand cart having transfomation-type wheel for possibility setting of adjustable width - Google Patents

Hand cart having transfomation-type wheel for possibility setting of adjustable width Download PDF

Info

Publication number
KR20160017554A
KR20160017554A KR1020140101276A KR20140101276A KR20160017554A KR 20160017554 A KR20160017554 A KR 20160017554A KR 1020140101276 A KR1020140101276 A KR 1020140101276A KR 20140101276 A KR20140101276 A KR 20140101276A KR 20160017554 A KR20160017554 A KR 20160017554A
Authority
KR
South Korea
Prior art keywords
wheels
pair
frame
width
wheel
Prior art date
Application number
KR1020140101276A
Other languages
Korean (ko)
Inventor
김만중
Original Assignee
김만중
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 김만중 filed Critical 김만중
Priority to KR1020140101276A priority Critical patent/KR20160017554A/en
Publication of KR20160017554A publication Critical patent/KR20160017554A/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B1/00—Hand carts having only one axis carrying one or more transport wheels; Equipment therefor
    • B62B1/18—Hand carts having only one axis carrying one or more transport wheels; Equipment therefor in which the load is disposed between the wheel axis and the handles, e.g. wheelbarrows
    • B62B1/20—Hand carts having only one axis carrying one or more transport wheels; Equipment therefor in which the load is disposed between the wheel axis and the handles, e.g. wheelbarrows involving parts being collapsible, attachable, detachable or convertible

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Handcart (AREA)

Abstract

The present invention relates to a hand cart having transformable wheels capable of adjusting width and, more specifically, to a hand cart having transformable wheels capable of adjusting width which is provided with the transformable wheels movable in the width direction of a rotation support shaft for supporting a pair of the wheels to be able to rotate, and can move the transformable wheels in the width direction to be narrower or wider via the simple operation of an operating lever installed around handles, thereby preventing the cart from being overturned toward one side in the case of maintaining the pair of the wheels to have a wide width in the state that the cart carries a heavy load, and being conveniently used for multiple purposes according to a state of a road surface by rapidly moving the pair of the wheels to have a narrow width in a narrow road such as a furrow, a ridge and a salt pond path. The present invention provides the hand cart having the transformable wheels capable of adjusting the width, which is provided with a storage part and the handles in a frame for carrying the load and installs the pair of the wheels in the lower part of the frame, comprising: the rotation support shaft supporting the pair of the wheels to be able to rotate; an elastic support unit elastically supporting the pair of the wheels in the direction for getting the gap between the pair of the wheels narrower or wider; and a gap adjustment unit moving the pair of the wheels to have a regular gap by a user′s operation.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a wheelbarrow having a variable-

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a wheelbarrow having a variable wheel capable of adjusting its width, and more particularly to a wheelbarrow having a variable wheel capable of moving along a width direction of a rotation support shaft for rotatably supporting a pair of wheels, The movable wheel can be moved in the width direction to be narrowed or widened by the simple operation of the installed operating lever so that the cart can be prevented from being rolled up laterally when the pair of wheels are kept to have a wide width while the heavy load is loaded The present invention relates to a wheelbarrow having a variable wheel which can be used conveniently and versatily according to the situation of a road surface by moving a pair of wheels quickly so as to have a narrow width in a narrowing such as a trough,

Generally, a conventional unicycle wagon having a front wheel and two rear stools is convenient for moving a narrow passage such as a house, a furrow, a farmhouse, and the like. However, if the load is large and heavy, or if the type of load is fluid like water, when the carriage travels, the load on the carriage is shifted to one side when the road passes through an uneven passage or obstacle. It is often difficult to keep the load box from falling sideways.

Accordingly, in the Korean Utility Model Registration No. 20-2011-0010052 (registered on Oct. 29, 2012), the "narrow-type barrow structure" is used in narrow corners such as houses or fields, narrow corners, And the center of gravity of the wheel axle is varied and used.

Referring to FIG. 1, the horizontal frame, in which both ends of the bucket front fixing bar 111 are supported at a predetermined angle so that the front bottom of the bucket 110 is seated, And the bucket assembly assembly is fixed to both sides of the handle 112. The bucket assembly assembly is fixed to both the wheel frame assembly assembly and the bucket assembly assembly by a pair of support legs 115, In which the grip bracket is fixed in a diagonal position below the handle and the support leg,

Shaped frame bent at a width of the bucket front fixing bar 111 is bent at 135 ° so that both ends of the wheel frame 117 are fixed to the right and left ends of the main frame part and the bucket front fixing bar 111, The wheel frame rest 118 is fixed to both lower sides of the bucket front fixing bar 111 and the upper side of the wheel frame 117 on the upper side of the banding portion and the lower end of the wheel frame 117 And two wheels 120 are assembled to be connected to each other by a wheel shaft having both ends threadedly connected to each other between the wheel shaft 119 and the wheel frame 117 ) Is formed on one side of the outer casing storage box 124 for storing the outer casings.

However, in order to make the center of gravity of the wheel shaft different according to the situation of the ground, it is necessary that the above-mentioned conventional "narrow-band type handrail structure" It is inconvenient to use it because it is necessary to assemble and install the tires 119. It is necessary to move the center axis of the wheel 120 according to the weight of the load and to use a wide width wheel such as a wide tire, There is still a fear of overturning when used in the same narrowing as the conventional technique.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a variable-diameter wheel capable of moving along a width direction of a rotary support shaft for rotatably supporting a pair of wheels, It is possible to move the variable wheel to be narrowed or widened in the width direction, so that when the pair of wheels are maintained to have a wide width in a state of carrying heavy loads, it is possible to prevent the wheelbarrow from being overturned sideways, The present invention is to provide a variable wheel which can be used conveniently and versatily according to the situation of a road surface by rapidly moving a pair of wheels so as to have a narrow width at a narrowed road such as a road.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not intended to limit the invention to the precise form disclosed. There will be.

In order to accomplish the above object, according to the present invention, there is provided a cart having a variable-width wheel capable of adjusting the width thereof, comprising: a frame having a loading part and a handle for transporting the load; A rotation support shaft for rotatably supporting the pair of wheels; Elastic supporting means for elastically supporting the pair of wheels in a direction in which the pair of wheels are narrowed or widened; A spacing adjusting means for moving the pair of wheels at predetermined intervals by an operation of a user; .

In the wheelbarrow having the adjustable wheel capable of adjusting the width according to the present invention, the elastic support means includes an inner wire having one end connected to each of the pair of wheels and elongated in a predetermined length, And an elastic body which is connected to the other end of the frame and is supported on one side of the frame at the other end thereof to tension the pair of wheels in a direction to narrow each other.

In the wheelbarrow having the adjustable wheel capable of adjusting the width according to the present invention, the distance adjusting means may include an adjusting lever provided around the handle, a wire extension member provided at both end portions of the rotation support shaft, And an outer wire connected to the one end of the wire support member and the other end connected to the pair of wheels, the outer wire being hooked and supported to extend through the wire extension member by a predetermined length in the width direction along the rotation support shaft.

In addition, the cart having the adjustable wheels capable of adjusting the width according to the present invention includes: a caster disposed at a predetermined distance behind the pair of wheels; And further comprising:

In addition, the cart having the adjustable wheels capable of adjusting the width according to the present invention includes: a seat belt disposed around the handle of the frame; And further comprising:

According to another aspect of the present invention, there is provided a wheelbarrow having a variable wheel capable of adjusting the width of the wheel according to the present invention is provided with a variable wheel capable of moving along a width direction of a rotary support shaft for rotatably supporting a pair of wheels, The pair of variable wheels can be moved in the width direction so as to be narrowed or widened by the simple operation of the installed operation lever so that when the pair of wheels are maintained to have a wide width in the state of carrying heavy loads, And can be conveniently used in a versatile manner according to the situation of the road surface by moving quickly so that a pair of wheels have a narrow width in a narrowing such as a trough, a slab, and a trough.

1 is a perspective view showing a structure of a barrow for a narrowing according to a conventional example.
FIG. 2 is a perspective view illustrating a barrel having a variable wheel capable of adjusting its width according to an embodiment of the present invention; FIG.
3 is a side view of a cart having a variable wheel capable of adjusting its width according to an embodiment of the present invention;
FIG. 4 is a plan view schematically illustrating an operating state of a wheelbarrow having a variable wheel capable of width adjustment according to an embodiment of the present invention; FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a wheelbarrow (hereinafter referred to as a "cart") having a variable wheel capable of adjusting the width according to the present invention will be described in detail with reference to the embodiments shown in the drawings.

FIG. 2 is a perspective view illustrating a wheelbarrow having a variable wheel capable of adjusting the width thereof according to an embodiment of the present invention. FIG. 3 is a perspective view illustrating a wheelbarrow having a variable wheel capable of width adjustment according to an embodiment of the present invention. 4 is a plan view schematically illustrating an operating state of a wheelbarrow having a variable wheel capable of width adjustment according to an embodiment of the present invention.

Referring to the drawings, a cart 1 according to an embodiment of the present invention includes a loading unit 11 and a handle 12 on a frame 10 to carry a load, In a cart having a pair of wheels 20,

A rotation support shaft 30, an elastic support means 40, and a separation adjusting means 50. [

That is, the structure of the hand cart 10 of the present invention is largely composed of the frame 10, which is structurally rigid and is provided with a loading section 11 on the upper side and a handle 12 on the rear side, The rotation support shaft 30 extending in the width direction by a support bracket 13 vertically extending from the front lower portion of the rotary support shaft 30 and the pair of wheels 20 The elastic supporting means 40 and the spacing adjusting means 50 are configured such that the pair of wheels 20 are movable in the width direction along the rotation support shaft 30.

The hand wheel 1 according to an embodiment of the present invention is configured such that the pair of wheels 20 are guided along the width direction of the rotation support shaft 30 and the interval between the pair of wheels 20 is And is configured to be adjustable so as to be narrowed or widened.

The elastic support means 40 is configured to elastically support the pair of wheels 20 in a direction in which the interval between the pair of wheels 20 is narrowed or widened. An inner wire 41, and an elastic body 42, as shown in Fig.

Therefore, in the embodiment of the present invention, the elastic support means (40) is configured to apply elasticity in a direction in which the interval between the pair of wheels (20) is narrowed.

2 and 3, one end of the inner wire 41 is connected to each of the pair of wheels 20, and the inner wire 41 is elongated to a predetermined length.

The elastic body 42 is preferably a coil tension spring which is inexpensive, easy to purchase, and easy to install.

The other end of the elastic body 42 is supported on one side of the frame 10 in a state where one end of the elastic body 42 is connected to the other end of the inner wire 41 and is pulled in a direction in which the intervals of the pair of wheels 20 are narrowed It plays a role.

That is, the elastic body 42 is connected to the inner wire 41 in a state where the other end is fixed to one end of the central frame 14, do.

Since the center frame 14 is positioned between the handle 12 positioned at the rear of the frame 10 and the pair of wheels 20, the inner wire 41 and the elastic body 42 And extends in the front-rear direction at the central portion of the frame 10.

4, the inner wire 41 is connected to the inner side of each of the pair of wheels 20, and the other end of the inner wire 41 is connected to the elastic member 42, A pair of inner wires 41 connected to one end of the pair of wheels 20 and a pair of inner wires 41 connected to one end of the pair of wheels 20. In another embodiment, It is also possible that one end of the elastic body 42 is connected to the elastic body 42.

A first support member 41a protruding toward the rear of the frame 10 is provided at a central portion of the rotation support shaft 30, And each of the pair of inner wires 41 is hooked and supported so as to extend to a central portion along the width direction of the rotation support shaft 20. [

The pair of inner wires 41 are passed through the through hole of the first support member 41a in a state where one end is connected to each of the pair of wheels 20 and then the other end is connected to the elastic member 42, When the elastic force of the elastic body 42 is transmitted to the inner wire 41, the pair of wheels 20 are connected to the center of the rotation support shaft 30 provided with the first support member 41a, And is elastically supported.

That is, the elastic support means 40 may include the pair of wheels 20 and the elastic body 41 in a state in which the inner wire 41 is hooked on the first support member 41a, And the elastic body (42) is fixed to the central frame (14) so as to tension the inner wire (41) so that the pair of wheels (20) Thereby supporting the wheel 20 of the vehicle.

Meanwhile, the elastic support means 40 may be constructed such that the pair of wheels 20 are widened as described above.

An elastic member (not shown) having the same construction as that of the elastic body 42 of the elastic support means 40 is attached to each of the pair of wheels 20 on both sides of the rotation support shaft 30 That is, in a direction in which the mutual spacing of the pair of wheels 20 is widened.

In addition, the cart (1) according to an embodiment of the present invention includes a pair of wheels (20) elastically supported by the elastic support means (40) (50).

The distance adjusting means 50 includes a control lever 51, a wire extension member 52, and an outer wire 53. The control lever 51 is configured to move the pair of wheels 20 by a user's operation, As shown in FIG.

4, one end of the control lever 51 is hingedly connected to a fixing bracket 15 having a predetermined length so as to be positioned around the handle 12 and protruding to a lower portion of the frame 10, And is rotatable around the shaft 51a.

A pair of wire extension members 52 are provided at both ends of the rotation support shaft 30, and the wire extension member 52 may be a dowland.

The outer wire 53 has one end connected to one end of the control lever 51 and the other end connected to the pair of wheels 20, And extend and extend through the wire extension member 52.

That is, the wire extension member 52 is extended by a predetermined length so that the pair of wheels 20 can move in the width direction of the rotation support shaft 30, And extends the remaining length toward the direction in which the control lever 51 is positioned.

When the adjustment lever 51 is pulled in the direction of the knob 12 by the user's operation, the outer wire 53 is pulled backward along the adjustment lever 51 to the frame 10, The pair of wheels 20 resiliently supported by the elastic support means 40 so as to be mutually narrowed are moved along the width direction of the rotary support shaft 30 by the movement of the outer wires 53 Thereby moving in a mutually widening direction.

Therefore, when the control lever 51 is artificially pulled by the user's operation, the gap between the pair of wheels 20 is moved in a direction to widen mutually, and when the control lever 51 is not externally pressurized , The elastic support means (40) is in an initial state in which the intervals of the pair of wheels (20) move in a direction to narrow each other.

The frame 10 is provided with a second support member 16 provided between the control lever 51 and the wire extension member 52 to support the outer wire 53 in an unclamped manner.

4, the second support member 16 may be formed in an annular shape, and the outer wire 53, one end of which is connected to the control lever 51, may extend along the direction in which the frame 10 is formed And the second support member 16 installed in this way is operated by the user so as to be able to act on the outer wire 53 when the control lever 51 is pulled by the user So that the outer wire 53 can be stably moved along with the movement of the control lever 51. The outer wire 53 is supported by the outer wire 53 in a tensioned state.

The frame 10 is provided with a spacer 51b for supporting the control lever 51 in a state in which the control lever 51 is spaced apart from the frame 10 by a predetermined distance.

The spacer 51b is in an initial state in which the outer wire 53 is pulled by the elastic force of the elastic support means 40 so as to maintain the pair of wheels 20 in a mutually narrowed state The handle portion of the control lever 51 is spaced apart from the frame 10 so that the control lever 51 can be easily pulled out when the user desires to operate the control lever 51. [

At this time, when the gap between the pair of wheels 20 is pulled so as to move in the mutually widening direction, the control lever 51 may be stopped at the lower end of the knob 12 to stop the rotation. That is, the handle 12 serves as a stopper for restricting the turning operation of the adjusting lever 51, and at the same time, the adjusting lever 51 is arranged around the knob 12, (51) can be quickly operated.

4, when the control lever 51 is rotated by the external force about the hinge shaft 51a in the direction of the handle 12, the outer wire 53 is rotated by the second support member The control lever 51 reaches the rotation range? 1 over which the elastic force of the elastic body 42 is overcome, that is, The control lever 51 is urged to rotate in the direction of the handle 12 by the elastic body 42. At this time, the other end of the control lever 51 is moved to the lower end of the handle 12 It is fixed by hanging.

Therefore, the handlebar 10 of the present invention is positioned such that the gap between the pair of wheels 20 is kept narrowed by the elastic force of the elastic support means 40 in the initial state, And is spaced apart from the frame 10 in a state of being rotated forward.

When the user wishes to widen the gap between the pair of wheels 20, the user can easily set the control lever 51 to be fixed to the handle 12 while pulling the control lever 51 in the direction of the handle 12, The intervals between the pair of wheels 20 can be maintained to be widened through the operation.

The wheelbarrow 1 according to an embodiment of the present invention further includes a caster 60 spaced apart from the rear of the pair of wheels 20.

The caster 60 is installed to be freely rotatable on both sides of the frame 10, that is, the lower end of the center frame 14, so that the load applied to the front of the frame 10 when the cart 100 is driven So that the center of gravity can be stably maintained while the running is stopped. Further, the caster 60 has an effect of enabling easy rotation even in the state where the hand bag 1 is stopped.

The cart 1 according to an embodiment of the present invention further includes a seat belt 70 disposed around the handle 12 of the frame 10.

The seat belt 70 may be installed in a state of being sagged between the pair of grips 12 so as to support the body of the user when the cart 1 runs on a slope or an uphill slope. , So that the front of the body is directed toward the handle (12) of the hand-held handle (1) while the user is in the inside of the frame (10) so as to drag the hand-handle (1) backward.

At this time, when the load is loaded on the loading unit 11, the caster 60 plays a role of supporting the load applied to the frame 10 on the ground, and at the same time, helping to change the running direction freely.

The wheelbarrow having the variable width wheels described above and shown in the drawings is only one embodiment for carrying out the present invention and should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is defined only by the matters set forth in the following claims, and the embodiments improved and changed without departing from the gist of the present invention are obvious to those having ordinary skill in the art to which the present invention belongs It will be understood that the invention is not limited thereto.

1 cart 10 frames
11 Loading part 12 Handle
20 one pair of wheels 30 rotation support shaft
40 elastic support means 41 inner wire
42 elastic body 50 spacing adjusting means
51 control lever 52 wire extension member
53 outer wire 60 casters
70 seat belt

Claims (5)

1. A hand cart comprising a frame and a handle for carrying a load and a pair of wheels at a lower portion of the frame,
A rotation support shaft for rotatably supporting the pair of wheels;
Elastic supporting means for elastically supporting the pair of wheels in a direction in which the pair of wheels are narrowed or widened;
A spacing adjusting means for moving the pair of wheels at predetermined intervals by an operation of a user; Wherein the wheel is provided with a variable width adjustable wheel. The method according to claim 1,
The elastic supporting means comprises:
An inner wire having one end connected to each of the pair of wheels and elongated in a predetermined length,
And an elastic body which is supported on one side of the frame so that one end thereof is connected to the other end of the inner wire and the other end of the elastic wire is tensioned in a direction in which the pair of wheels are spaced apart from each other. . The method according to claim 1,
The spacing adjusting means comprises:
An adjustment lever provided around the handle,
A wire extension member provided at both side end portions of the rotation support shaft,
And an outer wire connected to one end of the control lever at one end and connected to the pair of wheels at the other end, the outer wire being hooked and supported to extend through the wire extension member by a predetermined length in the width direction along the rotation support shaft Features a cart with adjustable width adjustable wheels. 4. The method according to any one of claims 1 to 3,
A caster disposed at a predetermined distance behind the pair of wheels; Wherein the wheel is provided with a variable width adjustable wheel. 4. The method according to any one of claims 1 to 3,
A seat belt disposed around the handle of the frame; Wherein the wheel is provided with a variable width adjustable wheel.
KR1020140101276A 2014-08-06 2014-08-06 Hand cart having transfomation-type wheel for possibility setting of adjustable width KR20160017554A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140101276A KR20160017554A (en) 2014-08-06 2014-08-06 Hand cart having transfomation-type wheel for possibility setting of adjustable width

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140101276A KR20160017554A (en) 2014-08-06 2014-08-06 Hand cart having transfomation-type wheel for possibility setting of adjustable width

Publications (1)

Publication Number Publication Date
KR20160017554A true KR20160017554A (en) 2016-02-16

Family

ID=55448017

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020140101276A KR20160017554A (en) 2014-08-06 2014-08-06 Hand cart having transfomation-type wheel for possibility setting of adjustable width

Country Status (1)

Country Link
KR (1) KR20160017554A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170133828A (en) * 2016-05-26 2017-12-06 두산중공업 주식회사 Steel Scrap Cleaning Apparatus Having Wheel
KR102023083B1 (en) * 2019-04-30 2019-09-19 한태원 One-touch disassembly and assembly possible wheelbarrow

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170133828A (en) * 2016-05-26 2017-12-06 두산중공업 주식회사 Steel Scrap Cleaning Apparatus Having Wheel
KR102023083B1 (en) * 2019-04-30 2019-09-19 한태원 One-touch disassembly and assembly possible wheelbarrow

Similar Documents

Publication Publication Date Title
AU2018204399B2 (en) Child Transporter
US6827364B1 (en) Personal utility cart
AU2022200335B2 (en) Weight training sled
US2935331A (en) Cart
US20170008544A1 (en) Collapsible wheeled support or carrier
US9381128B2 (en) Mobile treatment table
US20060208440A1 (en) Utility cart
US2308626A (en) Baby walker
US10112638B2 (en) Self-adjusting balanced multi-purpose transport carrier
US6296260B1 (en) Supplemental wheel for a golf bag cart
KR20160017554A (en) Hand cart having transfomation-type wheel for possibility setting of adjustable width
GB2483873A (en) A stair climbing attachment unit for a pram
KR101183971B1 (en) Handcart having three wheel
WO2012005666A1 (en) Cart
KR20170060707A (en) The wheel structure of pesticide applicator
US20090267319A1 (en) Device for pulling bicycle or tricycle
US20220227407A1 (en) Vehicle combination
US9409584B2 (en) Expedition carts and associated systems and methods
US6293369B1 (en) Shopping cart locking system
US2763489A (en) Hand truck provided with track type treads
US20130257127A1 (en) Field work vehicle with seat apparatus
EP2895374B1 (en) Shopping trolley with platform for a child
JP2020050236A (en) Shopping cart
US20230347960A1 (en) Child Standing Platform for a Shopping Cart
KR101107026B1 (en) Handcart having three wheel

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right