JP2001341649A - Carrier truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lightweight and difficult-to-rust carrier truck allowing an easy wash in water, having sufficient strength. SOLUTION: This carrier truck 1 has a square frame 10 comprising four elongate edge plates 11A-11D, and four wheels 21 provided in four corners of the frame 10. Each the edge plate 11A-11D has a horizontal part 12 and a vertical part 13 extending from an outside edge of the horizontal part 12, and is made of a cross-sectionally L-shaped aluminum extrusion mold material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carriage.

[0002]

2. Description of the Related Art For example, a trolley for loading and transporting a tray containing foods includes a square frame-shaped or plate-shaped trolley;
Wheels provided at the four corners of the table. The stand is
Due to hygienic requirements, it is made of stainless steel that can be easily washed with water and is resistant to rust.

[0003]

However, the base made of stainless steel has a problem that it is heavy and requires a force for transportation. The present invention has been made in view of the above circumstances, and can be easily washed with water, and is not easily rusted.
An object of the present invention is to provide a transport cart that is lightweight, easy to transport, and has sufficient strength.

[0004]

According to a first aspect of the present invention, there is provided a rectangular frame having four elongated edge plates, and wheels provided at four corners of the frame. The plate has a horizontal portion and a vertical portion connected to an outer edge of the horizontal portion, and is made of an extruded aluminum material having a substantially L-shaped cross section.

[0005] In a second aspect based on the first aspect, the horizontal portions of the four edge plates are located on the same horizontal plane, and the vertical portion of one edge plate is located below the horizontal portion. The vertical portions of the other three edge plates are protruded upward from the horizontal portions.

According to a third aspect, in the second aspect, the extruded members forming the frame include first and second two extruded members, and the first extruded member is the one edge plate. The second extruded section is provided with a right-angled triangular notch at two locations of the horizontal portion, and the vertical portion is bent at a right angle so that both edges of each notch are abutted, It is formed in a U-shape and provided as the other three edge plates.

According to a fourth aspect of the present invention, in any one of the first to third aspects, an aluminum corner is provided at four corners of the frame so as to be bridged between lower surfaces of horizontal portions of two edge plates. A plate is provided, and the wheels are provided on a lower surface of the corner plate, and a locking portion for wheels of another transporting truck stacked on the upper surface of the corner plate is formed. Features.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a carrier 1 according to an embodiment of the present invention. Carriage 1
Has a rectangular frame 10 and four casters 20 provided at four corners of the frame 10.

The frame 10 has four elongated edge plates 11A to 11A.
D. The edge plates 11A to 11D are connected to the horizontal portion 1
2 and a vertical portion 13 connected to the outer edge of the horizontal portion 12 to form an L-shaped cross section. Four edge plates 11
The horizontal parts 12 of A to 11D are located on the same horizontal plane. The front side (lower in FIG. 1) edge plate 11A is
A vertical portion 13 protrudes downward from the horizontal portion 12. The other three edge plates 11 </ b> B to 11 </ b> D have vertical portions 13 projecting upward from the horizontal portions 12.

The above-mentioned frame 10, that is, four edge plates 11A-
11D is composed of two aluminum extrusions. One of them is provided as a front edge plate 11A, and the other is provided as remaining three edge plates 11B to 11D. That is, these three edge plates 11B
11D are integrated by connecting the vertical portions 13 to each other.

Here, a method of manufacturing the edge plates 11A to 11D will be described. First, an aluminum section having an L-shaped cross section extending straight is extruded. This is cut to obtain an edge plate 11A (first extruded shape) and, as shown in FIG. 4, a second extruded shape 11 'having a total length of three edge plates 11B to 11D. A right-angled isosceles triangular notch 12a is formed at two locations on the horizontal portion 12 'of the molding 11'. The back end of the notch 12a reaches the vertical portion 13 'of the shape 11'. The vertical portion 13 'is bent at a right angle around the back end of the notch 12a, and the notch 12a is bent.
Butt the both edges. As a result, the shape member 11 'becomes U-shaped, and the edge plates 11B to 11D are formed.

At the four corners of the frame 10, horizontal portions 1 of two edge plates are provided.
A right angle isosceles triangular corner plate 14 (base plate) is disposed so as to be bridged between the lower surfaces of the two.
This corner plate 14 is also made of aluminum. The corner plate 14 and the horizontal portion 12 are connected by spot welding. The welding location is indicated by the symbol w in FIG. The casters 20 are attached to the lower surface of each corner plate 14 by rivets 22.

A corner plate 14 arranged at the left rear corner of the frame 10 has a pair of cut-and-raised portions 14a projecting upward.
(Locking part) is formed. A pair of cut and raised 14a
Are opposed to each other in the front-rear direction, and the interval is substantially the same as the width of the wheel 21 of the caster 20. Similarly, the corner plate 1 disposed at the right rear corner of the frame 10
4 also has a pair of cut-and-raised portions 14a.

The operation will be described. Since the frame 10 and the corner plate 14 are made of aluminum, the carrier 1 can be easily washed with water and can be kept clean. Besides, it is hard to rust. In addition, it is lightweight. For example, the weight is one-third that of a case formed of stainless steel. Therefore, the transport operation becomes easy. Also, recycling is easy.
The edge plates 11A to 11D have a high strength because their cross-sectional shapes are L-shaped. Further, since it is formed of an extruded die, it can be easily processed and can be made inexpensive.

As shown in FIG. 2 and FIG. 3, a tray T containing, for example, food can be loaded on the transport cart 1 and transported. At this time, the tray T is placed on the three edge plates 11B to 11B.
D can be locked at the vertical portion 13 so as not to protrude from the carriage 1. Further, since the vertical portion 13 of the front edge plate 11A is directed downward, the tray T can be slid from the front side of the frame 10 to be taken in and out, which facilitates unloading.

As shown in FIG. 5, when a plurality of transport vehicles 1 are used, the transport vehicles 1 can be stacked and transported together to a clearing place after use. At this time, a pair of cut-and-raised portions 14 of the lower transporting cart 1
By sandwiching the wheels 21 of the upper transport trolley 1 between “a”, the upper transport trolley 1 can be prevented from rolling down.

The present invention is not limited to the above embodiment,
Various modifications are possible. For example, instead of four corner plates, one is provided on the horizontal portion 12 of the edge plates 11A to 11D.
An aluminum bottom plate (base plate) may be attached, wheels may be provided at four corners of the bottom plate, and a locking portion may be formed as necessary.

[0018]

As described above, in the first invention,
The transport trolley can be easily washed with water, is less likely to rust, and can be made lighter. In addition, the strength of the edge plate can be sufficiently ensured, and molding can be easily performed. According to the second aspect of the present invention, a loading object such as a tray can be transported in a stable state, and can be easily slid in and out when unloading. In the third aspect, the three edge plates can be easily formed in a U-shape by bending the second extruded shape. According to the fourth aspect, a plurality of transport vehicles can be stacked and transported so that the transport vehicles stacked thereon do not roll down. Further, since the corner plate is also made of aluminum, it is possible to maintain a light weight.

[Brief description of the drawings]

FIG. 1 is a plan view of a transport vehicle according to an embodiment of the present invention.

FIG. 2 is a front view taken along the line II-II of FIG. 1, showing the transport cart in a state in which a plurality of trays are stacked.

FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 1, showing the transport cart in a state where trays are stacked.

FIG. 4 is a plan view of a second extruded die before being formed into a U-shape.

FIG. 5 is a cross-sectional view of a state where a plurality of transport vehicles are stacked.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conveyor cart 10 Frame 11A-11D Edge plate 11 '2nd extrusion-shaped material 12 Horizontal part 13 Vertical part 14 Corner plate 14a Cut-and-raised (locking part) 21 Wheel

Claims (4)

[Claims] 1. A rectangular frame comprising four elongated edge plates, and wheels provided at four corners of the frame, wherein the edge plate is a horizontal portion and a vertical portion connected to an outer edge of the horizontal portion. Wherein the carrier is made of an extruded aluminum member having a substantially L-shaped cross section. 2. The horizontal portions of the four edge plates are located on the same horizontal plane, and the vertical portion of one edge plate projects downward from the horizontal portion, and the other three edge plates have 2. The vertical part projects upward from the horizontal part.
The transport trolley described in the above. 3. The extruded material constituting the frame is a first,
A second extruded profile, wherein the first extruded profile is provided as the one edge plate, and wherein the second extruded profile has right-angled triangular cutouts at two locations on a horizontal portion thereof. The vertical portion is bent at a right angle so that both end edges of each notch abut against each other so as to be formed in a U-shape and provided as the other three edge plates. 3. The transport trolley according to 2. 4. A corner plate made of aluminum is provided at four corners of the frame so as to be bridged between lower surfaces of horizontal portions of the two edge plates, and the wheel is provided on a lower surface of the corner plate. The transporting vehicle according to any one of claims 1 to 3, wherein a locking portion for a wheel of another transporting vehicle stacked thereon is formed on an upper surface of the corner plate. .