KR200482444Y1

KR200482444Y1 - Automatic variable length handtruck

Info

Publication number: KR200482444Y1
Application number: KR2020150004477U
Authority: KR
Inventors: 김우중
Original assignee: 김우중
Priority date: 2015-07-03
Filing date: 2015-07-03
Publication date: 2017-01-24
Also published as: JP3216807U; WO2017007106A1; CN208085745U; KR20170000158U

Abstract

The present invention relates to an automatic length variable type hand cart, and more particularly, to an automatic length variable type hand cart capable of adjusting a cargo loading space to facilitate loading of a volume, particularly a load having a large load. One embodiment of the present invention includes a first frame, a second frame and a third frame provided respectively at one end and the other end of the first frame, a lower frame provided below the first frame and the third frame, And a pair of actuating portions provided below the second frame and the third frame for operating the guide portion, wherein, when the actuating portion is operated, a gap between the corresponding frame and the first frame And the distance is automatically adjusted.

Description

{AUTOMATIC VARIABLE LENGTH HANDTRUCK}

The present invention relates to an automatic length variable type hand cart, and more particularly, to an automatic length variable type hand cart capable of adjusting a cargo loading space to facilitate loading of a volume, particularly a load having a large load.

In general, a cart is a means of transportation used to conveniently transport heavy or bulky items to a person.

The carts are made in various forms depending on the size and volume of the cargo to be loaded.

Particularly, hand carts, which are mainly used for moving light cargo in the room, are usually composed of a horizontal frame and a handle made of a vertical frame.

These carts mainly contain cargoes in boxes or baskets, and then move the boxes or baskets on top of the horizontal frame.

However, when the conventional cart is loaded with a bulky cargo, the cargo loading space on the horizontal frame is narrowed, and the cargo is broken on the ground, or a part of the cargo is attracted to the ground. That is, there was a problem that the cargo was damaged.

In addition, the conventional cart has a problem that it is difficult to transfer a bulky object because the loading space is narrow, and in particular, when the number of cargo to be transferred is large, it must be transported several times in a divided manner.

In addition, the conventional hand cart is mainly used in the room, and when a corner of the hand cart hits the wall, there is a problem that the building is damaged.

Accordingly, there is a need for an automatic length-variable hand truck that can selectively expand the cargo space and adjust the degree of expansion.

Registration Utility Model Bulletin No. 20-0290212 (September 11, 2002)

In order to solve the above problems, the technical object of the present invention is to provide an automatic length variable type hand cart which can easily adjust a cargo loading space.

According to an aspect of the present invention, there is provided a display device including a first frame, a second frame and a third frame provided at one end and the other end of the first frame, And a pair of actuating parts provided below the second frame and the third frame to operate the guide part, wherein the actuating part is provided at the lower part of the second frame and the third frame, Wherein the distance between the first frame and the first frame is automatically adjusted.

In one embodiment of the present invention, ribs are provided under the first frame to the third frame, and button holes are further formed in the second frame and the third frame.

In one embodiment of the present invention, the length adjuster includes a first rod inserted into both ends of the first frame and one end of the second frame and the third frame, and the first rod has a plurality of Hole units are provided.

In one embodiment of the present invention, the extending portion includes a second rod inserted into both ends of the first frame and one end of the second frame and the third frame, the second rod being formed outside the first rod, And a pressing unit which is inserted in the second rod, one end of which is fixed to the rib and the other end is fixed to one end of the spring, and the spring is inserted into the second rod And is compressed by the wall provided and the pressing unit.

According to an embodiment of the present invention, the operation unit includes a housing forming a body, a button unit extending from an upper end of the housing, the button unit having a size corresponding to the buttonhole, A protruding unit protruding upward from the guide groove, the protruding unit having a size corresponding to the hole unit, an elastic member inserted and coupled to the groove provided in the lower portion of the housing, A lid unit coupled to the lower portion of the housing, and an escape prevention unit extending upward from the lid unit and sized to be inserted into the elastic member.

According to an embodiment of the present invention, the distance between the corresponding frame and the first frame may be adjusted according to the position where the protruding unit and the hole unit are coupled to each other.

In one embodiment of the present invention, a stopper may be provided at both ends of the first rod and the second rod.

In one embodiment of the present invention, a guide rail is provided at a lower end of the first frame to the third frame, and is provided at a position corresponding to the first rod and the second rod. have.

In one embodiment of the present invention, a guide roller may be provided at both edges of the second frame and the third frame.

In one embodiment of the present invention, a sub-wheel may be further provided at the lower end of the first frame.

According to an embodiment of the present invention, the first frame, the second frame, and the third frame are separately extended in the longitudinal direction so that the space in which the cargo can be loaded can be expanded.

In addition, the automatic length variable hand cart is convenient because it is possible to adjust the distance between each frame according to the volume or transport path of the cargo.

Further, an elastic member is provided in the operation part, so that it is convenient to adjust the frame interval.

Further, the guide portion can move each of the frames in a straight line.

Further, the guide rollers are provided at both side edges of the second frame and the third frame, so that the cargo can be transferred safely. Specifically, when the edge of the automatic length adjustable hand cart hits the wall in the process of moving the cargo in the building, the guide roller can prevent the building or hand cart from being damaged by buffering action.

Further, the guide portion can strengthen the connection between the frames and support the load caused by the cargo to be evenly distributed to each frame. In addition, the guide portion constitutes the skeleton of the first frame to the third frame, so that even when a heavy load such as a bolt, a metal mold, and a machine component is loaded on each frame, each frame can be stably supported. In other words, stable cargo transportation is possible.

In addition, a spring is provided inside the rod located outside, so that the second frame and the third frame can be moved easily.

Further, a load applied to the first frame can be dispersed when a load with a large load is selectively provided on the lower portion of the first frame.

It should be understood that the effect of the present invention is not limited to the effects described above, but includes all effects that can be deduced from the detailed description of the present invention or the composition of the invention described in the claims of utility model registration claims.

1 is a perspective view of an automatic length variable hand cart according to an embodiment of the present invention.
FIG. 2 is a perspective view illustrating an automatic length variable hand truck according to an embodiment of the present invention when extended. FIG.
FIG. 3 is a perspective view showing a lower structure of an automatic length variable type hand bar according to an embodiment of the present invention.
FIG. 4 is a perspective view showing a lower structure of an automatic length variable type hand cart according to an embodiment of the present invention in an extended state. FIG.
5 is a perspective view schematically illustrating operation of an extension according to one embodiment of the present invention.
6 is an exploded perspective view of an operating portion according to an embodiment of the present invention.
FIG. 7 is a perspective view showing an automatic variable-length type hand cart provided with auxiliary wheels under the first frame according to another embodiment of the present invention; FIG.

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be embodied in many different forms and therefore is not limited to the embodiments described herein. In the drawings, the same reference numerals are used throughout the specification to refer to the same or like parts.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "indirectly connected" . Also, when an element is referred to as "comprising ", it means that it can include other elements, not excluding other elements unless specifically stated otherwise.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of an automatic length variable hand cart according to an embodiment of the present invention, and FIG. 2 is a perspective view illustrating an automatic length variable hand cart according to an embodiment of the present invention when extended.

1 and 2, the automatic length-variable hand truck 1000 includes a first frame 100, a second frame 200, a third frame 300, a guide unit 500, and an operation unit 600 ).

The second frame 200 and the third frame 300 may be respectively provided at one end and the other end of the first frame 100. The first frame 100, The cargo can be loaded on the upper surface of the door 300.

Two wheels 400 may be symmetrically arranged on the lower ends of the second frame 200 and the third frame 300, respectively. At this time, the number of wheels 400 is not limited to the above embodiment.

The guide unit 500 is provided at the lower ends of the first frame 100, the second frame 200 and the third frame 300 and includes a length adjusting unit 510 and an extending unit 520.

The actuating part 600 may be provided under the second frame 200 and the third frame 300 and may be provided between the corresponding frame and the first frame 100 according to the operation of the actuating part 600. [ The spacing can be adjusted.

Specifically, when the actuating part 600 under the second frame 200 is operated, the distance between the corresponding second frame 200 and the first frame 100 can be adjusted, and the distance between the third frame 300 The interval between the corresponding third frame 300 and the first frame 100 can be adjusted.

Hereinafter, each configuration of the automatic length variation type hand-held car 1000 will be described in more detail.

The non-skid unit 30 may be formed on the upper surface of the first frame 100 to the third frame 300. Here, the anti-slip unit 30 may have a protrusion shape, and more preferably, a protrusion made of a material having a large frictional force may be formed.

The automatic variable-length type hand cart 1000 may further include feed through holes 120 formed to be spaced apart from both sides of the first frame 100 by predetermined intervals. In the second and third frames, The feed through hole 120 may be further spaced from the side surface by a predetermined interval. At this time, the through hole 120 for transfer may be included in an embodiment in any size and shape so that a human hand can easily enter. As described above, by using the feed through hole 120, the automatic length-variable hand-held basket 1000 can be easily transported even in a place where there is a step.

Further, guide rollers 50 may be further provided on both side edges of the second frame 200 and the third frame 300. The guide roller 50 can prevent the second frame 200 from being damaged by colliding with the inner wall of the building while the second frame 200 is moving.

A shock absorber (not shown) such as a sponge may be provided instead of the guide roller 50 in order to prevent impacts of both sides of the second frame 200 and the third frame 300 from colliding against the inner wall of the building have.

Further, by using the through hole 120 for conveyance and the guide roller 50, it is convenient to easily carry the automatic length variable type hand cart 1000. Specifically, when the operator puts his / her hand into the through hole 120 for conveying the automatic length-variable hand cart 1000, the guide roller 50 can be brought into contact with the bottom surface. That is, the operator can push the automatic length-variable handkerchief 1000 through the guide roller 50, thereby enabling convenient transportation.

FIG. 3 is a perspective view illustrating a lower structure of an automatic length variable hand cart according to an embodiment of the present invention, and FIG. 4 is a perspective view illustrating a lower structure of an automatic length variable hand cart according to an embodiment of the present invention in an extended state.

3 to 4, ribs 110 may be provided under the first frame 100, the second frame 200, and the third frame 300. Specifically, the ribs 110 may be formed in the lower part of the first frame 100 to the third frame 300 in a plurality of lengthwise and widthwise directions.

The ribs 110 may be included in an embodiment as long as the load applied to the first frame 100 to the third frame 300 can be distributed evenly throughout the respective frames. The ribs 110 provided as described above can support the respective frames to safely load heavy cargo.

Button holes 625 may be formed in the second frame 200 and the third frame 300. Details of the button hole 625 will be described later.

The guide part 500 includes a length adjusting part 510 and an extension part 520.

The length adjuster 510 includes a first rod 511. The first rod 511 is connected to both ends of the first frame 100 and one end of the second frame 200 and the third frame 300 So that the second frame 200 and the third frame 300 can be moved in a straight line by supporting the first frame 100 to the third frame 300.

Referring to Fig. 4A, a plurality of hole units 516 are provided at both ends of the first rod 511. Fig. At this time, the interval between the respective hole units 516 may be provided in consideration of an interval at which each frame is extended.

In one embodiment, the length adjusting portions 510 are formed as a pair, but the position and the number of the length adjusting portions 510 are not limited to the embodiment.

Hereinafter, the extension 520 will be described with reference to FIG.

5 is a perspective view schematically illustrating operation of an extension according to one embodiment of the present invention.

As shown in FIG. 5, the extension 520 includes a second rod 521, a spring 523, and a pressurizing unit 526.

The second rod 521 is inserted through both ends of the first frame 100 and one end of the second frame 200 and the third frame 300 to support the first frame 100 to the third frame 300 The second frame 200 and the third frame 300 can be moved on a straight line.

In addition, a pair of walls 528 to which one end of the spring 523 is to be fixed may be formed inside the second rod 521. Although the position of the wall 528 corresponds to both ends of the first frame 100 in one embodiment, the position of the wall 528 is not limited thereto, and if the spring 523 is in a position where the elastic force of the spring 523 can be sufficiently maintained, Are included in one embodiment.

The spring 523 is provided inside the second rod 521 so that one end of the spring 523 is fixed to the pressing unit 526 and the other end is fixed to the wall 528 provided inside the second rod 521 A pair of springs 523 can be provided on one of the second rods 521.

At this time, the spring 523 may be provided so as to maintain the compressed state even when the automatic length variable handheld device 1000 is maximally extended.

The pressurizing unit 526 is provided in such a size as to be insertable into the second rod 521. At this time, one end of the pressing unit 526 is fixed to the rib 110 located at one end of the second rod 521, and the spring 523 is fixed at the other end.

The lengths of the first rod 511 and the second rod 521 are set such that the lengths of the first and second rods 511 and 521 of the first frame 100, the second frame 200, As shown in FIG.

The guide rails 540 are provided at the lower ends of the first frame 100 to the third frame 300 and are provided at positions corresponding to the first rod 511 and the second rod 521, 511 and the second rod 521 are not separated from the predetermined positions.

A stopper 530 is further provided at both ends of the first rod 511 and the second rod 521 so that the first frame 100 and the second frame 200 and the first frame 100, (300) may be spaced apart by a predetermined maximum interval. More specifically, when the protruding unit 614 is inserted into the hole unit 516 located at the outermost side of the first rod 511, the stopper 530 is fixed to the first rod 511 so as to be caught at one end of the rib 110, The first rod 511 and the second rod 521.

The stopper 530 thus formed is configured such that the interval between the first frame 100 and the second frame 200 or the interval between the first frame 100 and the third frame 300 is extended The second frame 200 and the third frame 300 can be prevented from being detached from the guide unit 500. [

The first rod 511 and the second rod 521 are formed with fixing holes 513 at a central portion in the longitudinal direction and fixed to the fixing unit 513 at a position corresponding to the fixing holes 513. [ 535 are further provided so that the fixing hole 513 and the fixing unit 535 can be coupled and fixed to each other. That is, the first rod 511 and the second rod 521 are fixed to the first frame 100 and the second frame 200 and the third frame 300, As shown in Fig.

More specifically, Fig. 5 (a) is a perspective view schematically showing an extension part in which the automatic length variable hand cart is not extended, and Fig. 5 (b) is a schematic perspective view of an extension part in which the automatic length- Perspective view.

5 (a), when the automatic length-variable hand cart 1000 is in an unlonged state, the spring 523 is kept compressed by the pressure unit 526 and the wall 528 .

5 (b), when the automatic variable-length type hand-held truck 1000 is extended, the spring 523 pushes the pressing unit 526 and at the same time, the pressing unit 526 presses the fixed frame Tensile pushing.

Further, the guide part 500 provided as described above strengthens the connection between the frames and allows the load due to the cargo to be evenly distributed to each frame. In addition, the guide portion 500 may form the skeleton of the first frame 100 to the third frame 300, thereby increasing the weight of the maximum loadable cargo in the automatic length-variable hand truck 1000. That is, even when a heavy weight cargo such as a bolt, a metal mold, a machine part, or the like is loaded on the first frame 100 to the third frame 300, the cargo can be stably transported through the automatic length- Figure 6 is an exploded perspective view of an operating portion according to one embodiment of the present invention.

6, the actuating part 600 is provided in the second frame 200 and the third frame 300 and includes a housing 610, a button unit 620, a guide groove 612, An elastic member 630, a lid unit 640, and an escape prevention unit 645. The elastic member 630 may be an elastic member.

Hereinafter, each configuration of the operation unit 600 will be described in detail.

The housing 610 forms the body of the actuating part 600.

The button unit 620 is extended from the upper end of the housing 610 and may have a size corresponding to the button hole 625. That is, the button unit 620 may be formed to be insertable into the button hole 625. [ Preferably, when the button unit 620 is inserted into the button hole 625, the button unit 620 is not protruded from the upper surface of the frame.

Although not shown, a sealing unit (not shown) may be further formed in the space between the button unit 620 and the button hole 625 so that foreign matter may not enter the space between the button unit 620 and the button hole 625 . At this time, the sealing unit may be made of a material such as a sponge so that the button unit 620 is not disturbed from movement.

The guide groove 612 may be formed on both sides of the upper end of the housing 610 and may correspond to the shape of the first rod 511. More specifically, the guide groove 612 may be provided so that the surface of the guide groove 612 is in contact with the first rod 511 when the protruding unit 614 is inserted and fixed in the hole unit 516.

The protruding unit 614 protrudes upward from the guide groove 612 and may be formed to have a size corresponding to the hole unit 516. That is, the protruding unit 614 may be inserted and fixed to the hole unit 516.

The elastic member 630 may be inserted into a groove (not shown) provided under the housing 610 and coupled thereto. At this time, the groove provided under the housing 610 may be provided in a size and shape corresponding to the outer diameter of the elastic member 630 so that the elastic member 630 can only be moved up and down when the elastic member 630 is inserted. At this time, one or more elastic members 630 may be provided, and grooves provided under the housing 610 may be provided in the same number as the elastic members 630.

The cover unit 640 is coupled to the lower portion of the housing 610 to protect the inside of the operation unit 600.

The detachment prevention unit 645 may be formed to extend upward from the lid unit 640 and be sized to be inserted into the elastic member 630. That is, the release preventing unit 645 can protect the lower end of the elastic member 630 from being detached in the lateral direction.

The upper end of the elastic member 630 may be in contact with the groove provided in the lower portion of the housing 610 and the lower end of the elastic member 630 may be in contact with the upper surface of the lid unit 640. At this time, the elastic member 630 may be provided in a compressed state.

Hereinafter, a process of adjusting the interval between the first frame 100 and the second frame 200 using the operation unit 600 will be described.

First, when the button unit 620 is pressed on the upper surface of the second frame 200, the housing 610 is lowered together with the button unit 620 and the protruding unit 614 is released from the hole unit 516.

Next, the spring 623 is stretched by the restoring force and pushes the second frame 200, so that the first frame 100 and the second frame 200 are spaced apart from each other. That is, the second frame 200 is automatically extended by the spring 623.

The protruding unit 614 and the first rod 511 are slid while the second frame 200 is being moved and the protruding unit 614 is inserted and fixed in the hole unit 516 in a clicking sense.

The button unit 620 is moved to a position before being pressed by the restoring force of the elastic member 630 at the same time that the protruding unit 614 is inserted into the hole unit 516. [

That is, when the button unit 620 is pressed, the second frame 200 can be extended from the first frame 100 automatically.

When the number of the hole units 516 is three or more, the positions where the protruding units 614 and the hole units 516 are coupled with each other are changed according to the number of times the button unit 620 is pressed, The interval between the first frame 200 and the second frame 200 can be variously adjusted.

The distance between the first frame 100 and the second frame 200 and the distance between the first frame 100 and the third frame 300 of the automatic length variable hand cart 1000 can be easily adjusted .

The automatic length variable hand cart 1000 provided as described above is convenient because the length can be easily adjusted according to the volume of the cargo to be loaded.

FIG. 7 is a perspective view showing an automatic variable-length type hand cart provided with auxiliary wheels under the first frame according to another embodiment of the present invention; FIG.

As shown in FIG. 7, a wheel may be further provided under the first frame 100. At this time, the number and shape of the wheels are not limited to the embodiments, and may be embodied in various forms.

For example, the auxiliary frame 450 may be further provided at the center of the lower portion of the first frame 100. At this time, the auxiliary wheels 450 may be smaller than the wheels 400. Specifically, the auxiliary wheels 450 may be provided so as not to touch the floor when the general cargo is loaded on the first frame 100. However, when the automatic length-variable hand cart 1000 is used in an extended form, if the weight of the cargo loaded on the first frame 100 is large, the first frame 100 may be deformed. At this time, when the first frame 100 is deformed, the auxiliary wheels 450 may be arranged to be in contact with the floor. That is, the auxiliary wheel 450 can distribute the load of the cargo loaded on the first frame 100, and stably load and carry the cargo.

Alternatively, a pair of wheels 400 may be provided below the first frame 100, and may be provided so as to be aligned with the wheels 400 provided on the second frame 200 and the third frame 300 .

Also, although not shown, a handle frame (not shown) may be provided on one side of the upper surface of the second frame 200 or the third frame 300. Specifically, the handle frame can be manufactured to have a rigidity that is not damaged when the handle frame is extended to the upper side of the second frame 200 or the third frame 300 and is pushed and pulled on the automatic variable-length-type hand- have. In this case, any shape that allows a person to easily move the automatic length-variable hand-held bar 1000 is included in one embodiment.

It will be understood by those of ordinary skill in the art that the foregoing description of the present invention has been presented for purposes of illustration and that those skilled in the art will readily understand that various changes in form and details may be made therein without departing from the spirit and scope of the invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the claims of utility model registration described below, and all changes or modifications derived from the meaning and scope of claims of utility model registration claims and equivalents thereof are to be construed as being included in the scope of the present invention do.

30: Slip prevention unit 50: Guide roller
100: first frame 110: rib
120: through hole for conveying 200: second frame
300: third frame 400: wheel
450: Auxiliary wheel 500: Guide section
510: length adjusting portion 513: fixing hole
516: Hall unit 520:
523: spring 526: pressure unit
528: wall 530: stopper
535: Fixing unit 540: Guide rail
600: operating part 610: housing
612: Guide groove 614: Projection unit
620: Button unit 625: Button hole
630: elastic member 640: lid unit
645: Disengagement prevention unit 1000: Automatic length variable type cart

Claims

A first frame;
A second frame and a third frame provided at one end and the other end of the first frame, respectively;
A guide unit provided at the first frame to the third frame and including a length adjusting unit and an extension unit; And
And a pair of actuating parts provided below the second frame and the third frame to operate the guide part,
Wherein a gap is automatically adjusted between a corresponding frame and the first frame as the operation unit is operated, a rib is provided under the first frame to the third frame, and a button hole is provided in the second frame and the third frame, And the length adjuster includes a first rod inserted into both ends of the first frame and one end of the second frame and the third frame, and the first rod has a plurality of hole units at both ends thereof And the extension portion includes a second rod inserted into both ends of the first frame and one end of the second frame and the third frame and formed outside the first rod, a spring provided inside the second rod, And a pressing unit inserted in the second rod, one end of which is fixed to the rib and the other end is fixed to one end of the spring,
Wherein the spring is compressed by a wall provided in the second rod and the pressing unit.

delete

The method according to claim 1,
Wherein,
A housing defining a body;
A button unit extending from the upper end of the housing and having a size corresponding to the buttonhole;
A guide groove provided on both sides of the upper end of the housing to correspond to shapes of the first rod and the second rod;
A protruding unit protruding upward from the guide groove, the protruding unit having a size corresponding to the hole unit;
An elastic member inserted and coupled to a groove provided in the lower portion of the housing;
A lid unit coupled to the lower portion of the housing; And
And an escape prevention unit extending upward from the lid unit and sized to be inserted into the elastic member.

6. The method of claim 5,
Wherein the distance between the corresponding frame and the first frame is adjusted according to the position where the protruding unit and the hole unit are coupled.

The method according to claim 1,
And a stopper is provided at both ends of the first rod and the second rod.

The method according to claim 1,
And a guide rail provided at a lower end of the first frame to the third frame, the guide rail being provided at a position corresponding to the first rod and the second rod.

The method according to claim 1,
And a guide roller is provided at both side edges of the second frame and the third frame.

The method according to claim 1,
And a second wheel is further provided at a lower end of the first frame.