Foldable handcart having adjustable loading height

Abstract

The present invention relates to a foldable handcart having an adjustable loading height, the foldable handcart comprising: a main plate coupled with moving wheels; a handle portion rotatably coupled to one side of the main plate; and a loading plate disposed on one surface of the main plate and coupled to be height-adjustable. With this configuration, the loading plate is height-adjustably coupled to the main plate of the handcart, whereby the position of tools may be adjusted according to a working environment to reduce working time, and the tools may be replaced and used without bending the waist.

Description

Foldable handcart with adjustable loading height

[0001] The present invention relates to a foldable handcart with adjustable loading height, and more specifically, to a foldable handcart with adjustable loading height used to move or load tools or materials at a work site.

[0002] Generally, handcarts were used to facilitate the easy transport of cargo, featuring one or more pairs of wheels and a vertically elongated frame connected to it, with a loading platform horizontally fixed to the frame to transport items stacked on the platform.

[0003] These handcarts are designed for convenient movement, as cargo such as boxes or goods is placed on the loading platform and moved to the unloading area by pulling or pushing.

[0004] Conventional handcarts can only be used to transport goods, and when the shelves are multi-tiered, their large size poses a problem in that other items cannot be loaded onto a vehicle due to the bulk.

[0005] In addition, due to the low position of the stacking plate, workers have to bend over to grasp items when placing them on the plate, which not only increases the movement path but also puts strain on the back.

[0006] Prior art documents in the technical field to which the present invention belongs include Korean Registered Patent Publication No. 10-1632379, Korean Registered Patent Publication No. 10-1358012, Korean Registered Patent Publication No. 10-0746301, and Korean Registered Utility Model Publication No. 20-0358296.

[0007] The present invention was devised to solve the aforementioned problems and aims to enable the movement and loading of tools and materials at the work site, as well as to increase the transport volume or adjust the loading height.

[0008] To achieve the above objectives, a foldable handcart with adjustable loading height according to a preferred embodiment of the present invention comprises: a main plate coupled with a wheel to move; a handle portion rotatably coupled to one side of the main plate; and a loading plate positioned on one surface of the main plate and coupled to be height-adjustable.

[0009] In addition, at least one crossbar is coupled to the handle portion, and a hook is formed on one side of the loading plate to be secured by hooking onto an adjacent crossbar.

[0010] In addition, the loading plate is characterized by having a height adjustment part coupled thereto so as to be rotatable in a position facing the main plate, and the height of the loading plate is adjusted according to the rotation of the height adjustment part.

[0011] In addition, the tool box is coupled to one side of the main plate so that an inlet hole is formed to allow for insertion and removal.

[0012] In addition, a support member is attached to one side of the tool box so as to be rotatable by its own weight, and the support member is characterized by being rotatable so as to be pushed against the end of the inlet hole when the tool box is inserted into the inlet hole and to be in close contact with one side of the tool box by its own weight when it is withdrawn, and being rotatable so as to be supported on the ground when it is withdrawn.

[0013] According to the foldable handcart with adjustable loading height according to the present invention, a loading plate is height-adjustably coupled to the main plate of the handcart, thereby allowing the position of the tool to be adjusted according to the work environment to shorten working time, and enabling the tool to be replaced and used without bending the waist.

[0014] In addition, a tool box is attached to one side of the main plate so that it can be inserted and removed, allowing one to easily store one's own tools, materials including simple screws or silicone, and personal items such as notebooks or mobile phones at the workplace, thereby minimizing the risk of loss.

[0015] As a result, the site is kept tidy, which effectively prevents safety accidents caused by stepping on small materials or tools lying on the floor.

[0016] FIG. 1 is a drawing showing a foldable handcart with adjustable loading height according to a first embodiment of the present invention.

[0017] FIG. 2 is an operation diagram of a foldable handcart with adjustable loading height according to the first embodiment of the present invention.

[0018] FIG. 3 is an operation diagram of a foldable handcart with adjustable loading height according to the first embodiment of the present invention.

[0019] FIG. 4 is an illustrative diagram showing another embodiment of a tool box according to the first embodiment of the present invention.

[0020] FIG. 5 is a drawing showing a foldable handcart with adjustable loading height according to a second embodiment of the present invention.

[0021] FIG. 6 is a drawing showing a main plate according to a second embodiment of the present invention.

[0022] FIG. 7 is an operation diagram of a main plate according to a second embodiment of the present invention.

[0023] FIG. 8 is a schematic plan view of a driving unit according to a second embodiment of the present invention.

[0024] FIG. 9 is a schematic side view of a driving unit according to a second embodiment of the present invention.

[0025] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described in detail below together with the accompanying drawings.

[0026] However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Throughout the specification, the same reference numerals refer to the same components.

[0027] Hereinafter, the present invention will be described with reference to the drawings illustrating a foldable handcart capable of adjusting the loading height according to embodiments of the present invention.

[0028] FIG. 1 is a drawing showing a foldable handcart with adjustable loading height according to a first embodiment of the present invention, FIG. 2 is an operation diagram of a foldable handcart with adjustable loading height according to a first embodiment of the present invention, FIG. 3 is an operation diagram of a foldable handcart with adjustable loading height according to a first embodiment of the present invention, and FIG. 4 is an illustrative diagram showing another embodiment of a tool box according to a first embodiment of the present invention.

[0029] Referring to these drawings, the foldable handcart with adjustable loading height according to the present embodiment has the feature that the height of the loading plate can be adjusted, allowing the position and loading height of tools to be adjusted according to the working environment.

[0030] A foldable handcart (100) with adjustable loading height according to the present embodiment, capable of providing such effects, includes a main plate (110), a handle (120), and a loading plate (130).

[0031] The main plate (110) is a square plate having a predetermined thickness, and at least one movable wheel (111) is attached to the lower surface. It is preferable that a pair be attached in each of the front and rear directions.

[0032] A first inlet hole (112) is formed on one side of the main plate (110). A tool box (113) with a storage space formed therein is connected to the first inlet hole (112) of the main plate (110) so that it can be inserted and removed.

[0033] For example, the main plate (110) may be formed of lightweight and durable aluminum, strong and capable of withstanding heavy loads steel, stainless steel with excellent corrosion resistance that can be used in environments resistant to chemicals or moisture, or lightweight and inexpensive plastic.

[0034] The handle (120) is for pushing and moving the main plate (110), and a vertical bar (122) is rotatably connected to one side of the main plate (110). The vertical bar (122) is arranged in the longitudinal direction. The lower end of the vertical bar (122) is rotatably connected to a pivot shaft (121) connected to the main plate (110).

[0035] The vertical bar (122) is rotated inward by the pivot axis (121) so as to be folded parallel to the main plate (110), or rotated outward so as to be unfolded perpendicular to the main plate (110).

[0036] The upper part of the vertical bar (122) is bent outward to facilitate the worker's grip. Of course, the vertical bar (122) may be formed in a straight line or bent in multiple ways.

[0037] Meanwhile, it is preferable that the pivot axis (121) be positioned above the loading plate (130) so that it does not interfere with the loading plate (130), which will be described later, when the vertical bar (122) is rotated parallel to the main plate (110).

[0038] A pair of vertical bars (122) are arranged on both sides of the main plate (110), and at least one horizontal bar (123) is connected between the vertical bars (122). The horizontal bars (123) are arranged in a transverse direction. At least one horizontal bar (123) is formed at the top of the vertical bar (122) so that a worker can grip it, and below it, they can be spaced apart at regular intervals along the length direction of the vertical bar (122).

[0039] The loading plate (130) is a rectangular plate identical to the main plate (110), is arranged parallel to the main plate (110), and is vertically raised and lowered to adjust its height. A third inlet hole (131) is formed on the lower surface of the loading plate (130), and a height adjustment part (132) is connected to the third inlet hole (131).

[0040] The height adjustment unit (132) is positioned on both sides of the main plate (110) to stably support the loading plate (130). A first adjustment bar (132a) is connected to the height adjustment unit (132) so that its lower end can rotate on the other side of the upper surface of the main plate (110), and a second adjustment bar (132b) is connected to the upper end of the first adjustment bar (132a) so that it can rotate. The upper end of the second adjustment bar (132b) is connected to the inside of the third inlet hole (131) so that it can rotate.

[0041] The height of the loading plate (130) is adjusted according to the rotation of the first adjustment bar (132a) and the second adjustment bar (132b). When the first adjustment bar (132a) and the second adjustment bar (132b) rotate inward so that they overlap each other, the loading plate (130) is positioned at the bottom as it is inserted into the third inlet hole (131), and when they rotate vertically so that they are positioned in a straight line with each other, the loading plate (130) is positioned at the top.

[0042] Here, the first adjustment bar (132a) and the second adjustment bar (132b) may have a locking part, such as a protrusion, formed at an adjacent position so as not to rotate outward.

[0043] A hook (133) is attached to one side of the loading plate (130) at a position facing the horizontal bar (123). When the loading plate (130) is positioned at the top, it is secured by being hooked onto the adjacent horizontal bar (123).

[0044] The height adjustment part (132) is not limited to being height-adjustable according to the rotation of the first adjustment bar (132a) and the second adjustment bar (132b), and can be height-adjustable in other forms such as a cylinder or bellows.

[0045] Accordingly, one side of the loading plate (130) is supported by the handle (120) by the hook (133), and the other side is supported by the height adjustment part (132).

[0046] Meanwhile, at least one loading plate (130) can be combined so as to be stackable with each other.

[0047] Additionally, a locking device for fixing the rotation angle is attached to the vertical bar (122) or the height adjustment part (132) of the handle (120). The locking device is omitted as it is a well-known technology.

[0048] Additionally, a pocket is attached to the handle (120) so that the hook (133) that is hooked and fixed is not exposed to the outside. This is to prevent the exposed hook (133) from being damaged by external impact or the worker's clothing from getting caught.

[0049] For example, the loading plate (130) may be formed of lightweight and durable aluminum, strong and capable of withstanding heavy loads steel, stainless steel with excellent corrosion resistance that can be used in environments resistant to chemicals or moisture, or lightweight and inexpensive plastic.

[0050] Referring to FIG. 4, the tool box may be formed in a shape that is open upward or can be opened and closed upward, rather than in a drawer shape that is inserted sideways into the main plate.

[0051] FIG. 5 is a drawing showing a foldable handcart with adjustable loading height according to a second embodiment of the present invention, FIG. 6 is a drawing showing a main plate according to a second embodiment of the present invention, FIG. 7 is an operation diagram of the main plate according to a second embodiment of the present invention, FIG. 8 is a schematic plan view of a driving unit according to a second embodiment of the present invention, and FIG. 9 is a schematic side view of a driving unit according to a second embodiment of the present invention.

[0052] A foldable handcart (200) with adjustable loading height according to the present embodiment, capable of providing such effects, includes a main plate (210), a handle (220) and a loading plate (230).

[0053] The main plate (210) is a square plate having a predetermined thickness, and at least one movable wheel (211) is attached to the lower surface. It is preferable that a pair be attached in each of the front and rear directions.

[0054] A first inlet hole (212) is formed on one side of the main plate (210). A first magnetic body (212a) is attached to the outermost lower end of the first inlet hole (212). The first magnetic body (212a) has a first pole, and the first pole can be formed as either an N pole or a S pole.

[0055] A tool box (213) having a storage space is connected to the first inlet hole (212) of the main plate (210) so as to be inserted and removed. A second inlet hole (213a) is formed on the lower surface of the tool box (213), and a second magnetic body (213b) having the same pole as the first magnetic body (212a) is connected to the inside of the second inlet hole (213a).

[0056] A support member (213c) is coupled to one side of the second inlet hole (213a) so that it can be inserted and removed according to rotation. On both sides of the support member (213c), a third magnetic body (213d) having the same pole as the first magnetic body (212a) and the second magnetic body (213b) is coupled at a position facing the first magnetic body (212a) and the second magnetic body (213b).

[0057] The support member (213c) rotates due to its own weight and magnetism. When the tool box (213) is pulled out, it moves downward due to its own weight and the repulsive force between it and the second magnetic body (213b) to be supported on the ground, or when the tool box (213) is pulled in, it comes into contact with the end of the first insertion hole (212) and is pushed, while simultaneously rotating upward due to the repulsive force between it and the first magnetic body (212a).

[0058] For example, the main plate (210) may be formed of lightweight and durable aluminum, strong and capable of withstanding heavy loads steel, stainless steel with excellent corrosion resistance that can be used in environments resistant to chemicals or moisture, or lightweight and inexpensive plastic.

[0059] The handle (220) is for pushing and moving the main plate (210), and a vertical bar (222) is rotatably connected to one side of the main plate (210). The vertical bar (222) is arranged in the longitudinal direction. The lower end of the vertical bar (222) is rotatably connected to a pivot shaft (221) connected to the main plate (210).

[0060] The vertical bar (222) is rotated inward by the pivot axis (221) so as to be folded parallel to the main plate (210), or rotated outward so as to be unfolded perpendicular to the main plate (210).

[0061] The upper part of the vertical bar (222) is bent outward to facilitate the worker's grip. Of course, the vertical bar (222) may be formed in a straight line or bent in multiple ways.

[0062] Meanwhile, it is preferable that the pivot axis (221) be positioned above the loading plate (230) so that it does not interfere with the loading plate (230), which will be described later, when the vertical bar (222) is rotated parallel to the main plate (210).

[0063] Vertical bars (222) are arranged in pairs on both sides of the main plate (210), and at least one horizontal bar (223) is connected between the vertical bars (222). The horizontal bars (223) are arranged in a transverse direction. At least one horizontal bar (223) is formed at the top of the vertical bar (222) so that a worker can grip it, and below it, they can be arranged spaced apart at regular intervals along the length direction of the vertical bar (222).

[0064] The loading plate (230) is a rectangular plate identical to the main plate (210), is arranged parallel to the main plate (210), and is vertically raised and lowered to adjust its height. A third inlet hole (231) is formed on the lower surface of the loading plate (230), and a height adjustment part (232) is connected to the third inlet hole (231).

[0065] The height adjustment unit (232) is positioned on both sides of the main plate (210) to stably support the loading plate (230). A first adjustment bar (232a) is connected to the height adjustment unit (232) so that its lower end can rotate on the other side of the upper surface of the main plate (210), and a second adjustment bar (232b) is connected to the upper end of the first adjustment bar (232a) so that it can rotate. The upper end of the second adjustment bar (232b) is connected to the inside of the third inlet hole (231) so that it can rotate.

[0066] The height of the loading plate (230) is adjusted according to the rotation of the first adjustment bar (232a) and the second adjustment bar (232b). When the first adjustment bar (232a) and the second adjustment bar (232b) rotate inward so that they overlap each other, the loading plate (230) is positioned at the lowest point as it is inserted into the third inlet hole (231), and when they rotate vertically so that they are positioned in a straight line with each other, the loading plate (230) is positioned at the highest point.

[0067] Here, the first adjustment bar (232a) and the second adjustment bar (232b) may have a locking part, such as a protrusion, formed at an adjacent position so as not to rotate outward.

[0068] A hook (233) is attached to one side of the loading plate (230) at a position facing the horizontal bar (223). When the loading plate (230) is positioned at the top, it is secured by being hooked onto the adjacent horizontal bar (223).

[0069] The height adjustment part (232) is not limited to being height-adjustable according to the rotation of the first adjustment bar (232a) and the second adjustment bar (232b), and can be height-adjustable in other forms such as a cylinder or bellows.

[0070] Accordingly, one side of the loading plate (230) is supported by the handle (220) by the hook (233), and the other side is supported by the height adjustment part (232).

[0071] For example, the loading plate (230) may be formed of lightweight and durable aluminum, strong and capable of withstanding heavy loads steel, stainless steel with excellent corrosion resistance that can be used in environments resistant to chemicals or moisture, or lightweight and inexpensive plastic.

[0072] Furthermore, the loading plate (230) can be raised and lowered by the driving unit (240).

[0073] Specifically, a drive motor (241) is coupled to one side of the handle (220) of the drive unit (240), and a drive shaft (242) is coupled to the drive motor (241) so as to rotate according to the drive, and an interlocking gear (243) is coupled to the end of the drive shaft (242). For example, the interlocking gear (243) is formed as a bevel gear.

[0074] An interlocking shaft (244) is connected to both sides of the interlocking gear (243) to engage with the interlocking gear (243). A winding drum (245) is connected to each outer part of the interlocking shaft (244). A wire (246) is connected to the winding drum (245) so as to be wound according to the rotation of the interlocking shaft (244). One end of the wire (246) is connected to an adjacent loading plate (230), and the loading plate (230) is raised and lowered according to the winding.

[0075] Here, it is preferable that the winding drum (245) is positioned adjacent to the vertical bar (222) of the handle (220) and that the wire (246) is connected to both sides of the loading plate (230).

[0076] Additionally, at least one auxiliary roller (247) for guiding an adjacent wire (246) along the longitudinal direction may be attached to the vertical bar (222).

[0077] Furthermore, a cushioning material (234) made of sponge or rubber is attached to the lower surface of the loading plate (230). This is to mitigate the impact between the loading plate (230) and the main plate (210) when the loading plate (230) is lowered, or to prevent damage to the items loaded on the main plate (210).

[0078] In addition to the cushioning material (234), a spring may also be additionally attached to the lower surface of the loading plate (230).

[0079] At this time, the spring is arranged in series or parallel with the cushioning material.

[0080] Meanwhile, at least one loading plate (230) can be combined so as to be stackable with each other.

[0081] Additionally, a locking device for fixing the rotation angle is attached to the vertical bar (222) or the height adjustment part (232) of the handle (220). The locking device is omitted as it is a well-known technology.

[0082] Additionally, a pocket is attached to the handle (220) so that the hook (233) that is hooked and fixed is not exposed to the outside. This is to prevent the exposed hook (233) from being damaged by external impact or the worker's clothing from getting caught.

[0083] According to the foldable handcart with adjustable loading height according to the present invention, a loading plate is height-adjustably coupled to the main plate of the handcart, thereby allowing the position of the tool to be adjusted according to the work environment to shorten working time, and enabling the tool to be replaced and used without bending the waist.

[0084] In addition, a tool box is attached to one side of the main plate so that it can be inserted and removed, allowing one to easily store one's own tools, materials including simple screws or silicone, and personal items such as notebooks or mobile phones at the workplace, thereby minimizing the risk of loss.

[0085] As a result, the site is kept tidy, which effectively prevents safety accidents caused by stepping on small materials or tools lying on the floor.

[0086] A person skilled in the art to which the present invention pertains will understand that the present invention may be implemented in other specific forms without altering its technical concept or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. The scope of the present invention is defined by the claims set forth below rather than by the detailed description above, and all modifications or variations derived from the meaning and scope of the claims and equivalent concepts should be interpreted as being included within the scope of the present invention.

[0087] *Explanation of symbols*

[0088] 100: Folding handcart

[0089] 110: Main Plate 111: Wheels

[0090] 112: 1st Inlet 113: Tool Box

[0091] 120: Handle 121: Rotating shaft

[0092] 122: Vertical bar 123: Horizontal bar

[0093] 130: Loading plate 131: Third inlet hole

[0094] 132: Height adjustment section 132a: First adjustment bar

[0095] 132b: Second adjustment bar 133: Hook

[0096] 212a: First magnetic body 213a: Second inlet hole

[0097] 213b: Secondary magnetic material 213c: Support

[0098] 213d: Third magnetic material 234: Buffer material

[0099] 240: Drive unit 241: Drive motor

[0100] 242: Drive shaft 243: Interlocking gear

[0101] 244: Interlocking shaft 245: Winding drum

[0102] 246: Wire 247: Auxiliary roller

Claims

1. Main plate with attached wheels; A handle portion rotatably coupled to one side of the main plate; and A foldable handcart with adjustable loading height comprising: a loading plate positioned on one side of the main plate and coupled in a height-adjustable manner.

2. In Paragraph 1, At least one horizontal bar is connected to the handle portion, and A foldable handcart with adjustable loading height, characterized in that a hook is formed on one side of the loading plate to be fixed by hooking onto an adjacent crossbar.

3. In Paragraph 1, A foldable handcart capable of adjusting loading height, characterized in that a height adjustment part is coupled to the loading plate so as to be rotatable in a position facing the main plate, and the height of the loading plate is adjusted according to the rotation of the height adjustment part.

4. In Paragraph 1, A foldable handcart with adjustable loading height, characterized by having an inlet hole formed on one side of the main plate to allow for the insertion and removal of a tool box.

5. In Paragraph 4, A foldable handcart with adjustable loading height, characterized in that a support member is attached to one side of the tool box so as to be rotatable by its own weight, and the support member rotates to be pressed against the end of the inlet hole when the tool box is inserted into the inlet hole, and rotates by its own weight so as to be supported on the ground when withdrawn.

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