JPH10217970A - Assembly type cart - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide such an assembly type cart that has the same size as a main body and becomes thin and very compact when it is not used by attaching each member such as a handle, a leg, a load carrier, and a back rest freely and fixing the leg and the load carrier to a fixing plate of the back rest for use. SOLUTION: A back rest 1 is provided with a pair of horizontal pipes 1b between a pair of vertical pipes 1a and a mounting plate 1c between the horizontal pipes 1b. A handle 2 consists of a pair of vertical part 2a and a horizontal part 2b which van be inserted into the vertical pipe 1a of the back rest 1. A leg 3 is constituted by attaching a wheel 3f to an L-shaped pipe 3a which can be inserted into the vertical pipes 1a of the back rest 1, and a load carrier 4 is constituted by a U-shaped pipe which can be inserted into a horizontal part 3c of the leg 3. A spring pin 5 is provided in the handle 2, the leg 3, and the load carrier 4 in such a manner that it can protrude freely, and a locking hole 6 is provided in the back rest 1 and the leg 3 corresponding to the spring pin 5. When this cart is not used, the handle 2 is pressed downward so that it is stored in the vertical pipe 1a of the back rest 1, and the leg 3 and the load carrier 4 are disassembled and fixed to a fixing plate 1c of the back rest 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembling cart which can be compactly carried by disassembling members such as handles and wheels when not in use.

[0002]

2. Description of the Related Art Conventionally, a so-called foldable cart is known as a cart used for carrying small parcels, in which a handle, a pallet, and wheels are foldably attached to a cart body as a backrest portion. The folding cart is characterized in that it is compact by folding each part such as a handle to the cart body when not in use, is convenient to carry, and does not take up much storage space.

[0003]

By the way, if this kind of cart is pursued to be compact when not in use, it will be as small as possible and as small as the cart body which is the largest member when folded. Is preferred. But,
Most of the conventional folding carts have a structure in which only one of the carrier and the wheels can be folded, so that the folded state is not necessarily compact. In the case of a cart where only the wheels can be folded, for example, the wheels must be small or the cart itself must be large so that the wheels do not overlap when folded. There is a drawback in that the use of the wheels reduces the loading capacity of the cart, while in the latter case, there is a drawback in that the cart itself becomes large and thus cannot be compact as a whole.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and its object is to reduce the thickness of a cart body when not in use without sacrificing the loading capacity. Another object of the present invention is to provide a cart that can be made extremely compact.

[0005]

According to the present invention, there is provided a backrest having a pair of upper and lower horizontal pipes fixed between a pair of left and right vertical pipes, and a backrest which can be inserted from above the vertical pipes. A handlebar having a pair of right and left vertical parts, a connecting rod extending in a direction opposite to the horizontal part of the L-shaped pipe at a vertical part of the L-shaped pipe insertable from below the vertical pipe, and a right angle to the connecting rod. And two pairs of legs each having wheels attached thereto via an axle provided in the L-shaped pipe, and a U-shaped carrier having a pair of left and right bent portions insertable into the horizontal portion of the L-shaped pipe. Spring pins are provided on the vertical portion of the handle, the vertical portion of the L-shaped pipe on the legs, and the bent portion of the carrier, so that the spring pins can protrude freely. Each of the L-shaped pipes is provided with a locking hole for the spring pin in a horizontal portion thereof so that these members can be attached freely, and a back surface is fixed between the horizontal pipes in the backrest with a semicircular arc on one side of the horizontal pipe. A narrow mounting plate is erected so that the L-shaped pipe of the legs and the cargo bed can be fixed to the back surface of the mounting plate along a surface formed by the vertical pipe and the horizontal pipe of the backrest. Was used.

According to the above construction, the legs and the bed are attached to the backrest by the spring pins, so that the legs and the bed can be easily disassembled and assembled. In addition, when the cart is not used, the handle is housed in the vertical pipe of the backrest, so that the size of the handle as a whole is the same as that of the backrest, and the compactness is achieved. On the other hand, the legs and carrier separated from the backrest are fixed to the mounting plate of the backrest,
At this time, since the thickness of the legs and the bed are absorbed by the vertical pipe of the backrest, the total thickness is the sum of the width of the vertical pipe and the width of the wheel, and can be extremely compact.

Further, in the above means, the handle may be
A means of selectively connecting horizontal portions of a set of L-shaped pipes with a connecting pipe was used. According to this means, the distance between the vertical portions of the handle can be adjusted depending on how the L-shaped pipe is inserted into the connecting pipe. Therefore, by this adjustment, the vertical portion of the handle can be securely accommodated in the vertical pipe of the backrest.

[0008]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an exploded perspective view showing one embodiment of an assembling cart according to the present invention. In the drawing, reference numeral 1 denotes a pair of upper and lower horizontal pipes 1b, 1b welded between a pair of left and right vertical pipes 1a, 1a. A vertical pipe 1a and a horizontal pipe 1b
Consists of, for example, a steel pipe. Also, the horizontal pipe 1b
· Between 1b, mounting plate 1c made of, for example, a narrow steel plate
Is installed parallel to the vertical pipe 1a and by welding or the like to a substantially half circumferential surface on one side (the front side in FIG. 1) of the horizontal pipe 1b.

Reference numeral 2 denotes a handle, which comprises a pair of vertical portions 2a and 2a and a horizontal portion 2b which can be inserted into the vertical pipe 1a of the backrest 1 from above. By the way, as will be described later, the handle 2 is stored in the vertical pipes 1a of the backrest 1 when the cart is not used, but in order to securely store the handle 2,
The distance between the vertical portions 2a of the handle 2 must substantially correspond to the distance between the vertical pipes 1a of the backrest 1. However, matching the dimensions of the two is troublesome and difficult in terms of molding. Therefore, in the present embodiment, FIG.
As shown in FIG. 2, a pair of symmetric L-shaped pipes is prepared, and the horizontal portions 2b are connected to each other by a connecting pipe 2c. According to the handle 2 having the above configuration, the distance between the vertical portions 2a and 2a can be surely matched with the backrest 1 by adjusting the degree of insertion of the horizontal portions 2b and 2b into the connection pipe 2c. Therefore, the molding of the handle 2 is easy and the handle 2
Can be reliably accommodated in the vertical pipes 1 a of the backrest 1. When the connecting portion 2c is formed of a rubber tube, the connecting portion 2c can, of course, function as a non-slip grip. However, these configurations relating to the handle 2 are examples in the present invention, and for example, the backrest 1 is provided between the vertical portions 2a of the handle 2 at the molding stage.
If it can be matched with between the vertical pipes 1a
One steel pipe is formed into a U-shape etc. and handle 2
Can also be configured.

Reference numeral 3.3 denotes a leg, and each of the legs 3.3 is an L-shaped pipe formed by bending a steel pipe or the like having a diameter insertable into the vertical pipe 1a of the backrest 1 into an L-shape. A connecting rod 3d extending in a direction opposite to the horizontal part 3c is welded in the middle of the vertical part 3b of the base 3a, and an axle 3e is provided at right angles to the connecting rod 3d outwardly. 3f is rotatably mounted. 4 is a horizontal portion 3c · 3 of the leg 3
c is a U-shaped carrier that can be inserted from the horizontal direction and has bent portions 4a, 4a formed by bending the left and right sides of the pipe.

A description will be given of the structure of assembling the cart with the members having the above-described structure.
Spring pins 5... Urged from the inside of the pipe to the outside are provided protrudingly in the vicinity of the upper end of the body 4 and in the vicinity of both ends of the bent portions 4 a of the loading platform 4. Corresponding to the above, locking holes 6... 6 are formed in the vicinity of the upper and lower ends of the vertical pipes 1a in the backrest 1 and in the vicinity of the front ends of the horizontal portions 3c in the legs 3 respectively. I have. Here, in the present embodiment, the spring pins 5.5 in the handle 2 and the corresponding upper locking holes 6.6 of the backrest 1 are located inside the pipe, while the spring pins 5 in the legs 3.3 and the bed 4. 5 and the lower side locking holes 6.6 of the backrest 1 corresponding to these spring pins 5.
6 is formed outside the pipe. This is mainly for the purpose of securing the ease of the work of removing the legs 3.3 and preventing the locking between the spring pins 5.5 of the handle 2 and the locking holes 5.5 for the legs 3.3. However, the positions where the spring pins and the locking holes are formed may be appropriately changed.

The specific configuration of the spring pin 5 is shown in FIG.
As shown in (2), the projection 5a is biased to the outside of the pipe by a bent linear spring 5b. According to this configuration, each member can be detachably attached by the locking action between the spring pin 5 and the locking hole 6. Then, while inserting the handle 2 and the leg 3 into the vertical pipe 1a of the backrest 1, and inserting the loading platform 4 into the horizontal portion 3c of the L-shaped pipe 3a of the leg 3, these are connected to the spring pin 5 and the locking hole 6. As shown in FIG. 4, the L-shaped assembling cart is completed as a result of the connection by the locking action. The assembling cart of this form adopts a usage method of placing the load N on the loading bed 4 and pushing out or towing with the handle 2, but otherwise the same as the conventionally known folding cart, , Detailed explanation is omitted.

Next, a mode of compacting the above-mentioned assembling cart when not in use will be described with reference to FIGS. First, as shown in FIG. 5, the handle 2 is pushed down while pressing the spring pin 5 provided on the handle 2, thereby accommodating the handle 2 in the vertical pipes 1 a of the backrest 1. On the other hand, the legs 3 are disassembled by pulling out the backrest 1 while pressing the spring pin 5. In addition, the bed 4 is disassembled from the legs 3 in the same manner.

Subsequently, the disassembled legs 3.3 and the bed 4
Is fixed to the mounting plate 1c of the backrest 1. As the specific fixing means, in this embodiment, as is clear from FIG. 5, three mounting screws 7... 7 are prepared on the upper side horizontal pipe 2a of the backrest 1, and three upper and lower portions of the mounting plate 1c are provided. Screw holes 8... 8 of the mounting screws 7. Screw holes 9 are also provided in the middle of the vertical portion 3b of the L-shaped pipe 3a of the legs 3 and near the tip of one bent portion 4a of the carrier 4.

The legs 3, 3 are attached to the mounting plate 1 of the backrest 1.
c, the legs 3 are connected to the vertical pipes 1a and 1a and the horizontal pipes 1b and 1b of the backrest 1 as shown in FIG.
1b, along the forming surface M, and both legs 3.3
Are arranged so as to fit in the formation surface M, and the L-shaped pipes 3a of the legs 3.3 are positioned on the back side of the mounting plate 1c (welding side to the horizontal pipe 1b).
The screw holes 9 of the V-shaped pipe 3a and the screw holes 8 of the mounting plate 1c are aligned with each other and fixed with the mounting screws 7 (see FIG. 6). At this time, the wheel 3f of the leg 3 is located in front of the mounting plate 1c, in other words, the mounting plate 1c is sandwiched between the wheel 1f and the L-shaped pipe 3a via the axle 1e.

On the other hand, as shown in FIG. 7, the loading platform 4 is also arranged along the formation surface M of the backrest 1 and on the back side of the mounting plate 1c while avoiding interference with the L-shaped pipe 3a. Then, the screw holes 8 of the mounting plate 1c are aligned with each other and fixed by the mounting screws 7.

As described above, when the assembling type cart is not used, the handle 2 has the vertical pipe 1a of the backrest 1.
Since the legs 3 and 3 and the carrier 4 are accommodated in the frame (formation surface M) of the backrest 1, the size can be substantially equal to the size of the backrest 1 in a front view (see FIG. 7). . In addition, the inner surface of the vertical pipe 1a
A concave three-dimensional space is formed by the inner side surfaces of b and 1b and the back surface of the mounting plate 1c, and this space functions as a storage space for the legs 3 and the cargo bed 4. Therefore, the thickness (diameter) of the legs 3 and the bed 4 is absorbed by the thickness (diameter) of the vertical pipe 1a of the backrest 1, as shown in FIG. Vertical pipe 1a
Approximately equals to the sum of the width W of the wheel 1f and the width H of the wheel 1f,
An extremely compact state can be achieved as compared with the conventional folding cart. Therefore, it is easy to transport and does not take up space for display and storage.

In the above-described embodiment, as means for fixing the legs 3 and the carrier 4 to the mounting plate 1c of the backrest 1,
Although the case of using the mounting screw 7 has been described, this is an example of the present invention, and other well-known fastening means such as a bolt or a clip may be used. The present invention requires that the leg 3
And fixing means capable of appropriately removing the carrier 4 from the mounting plate 1c. In fixing, the legs and the carrier are installed and fixed in the surface of the backrest 1 while avoiding mutual interference. .

[0019]

As described above, according to the assembled cart of the present invention, the members such as the legs and the bed are connected by the spring pins, so that the assembly and disassembly are easy. Also, when not in use, the handle is stored in the backrest, so the overall size is the same as the backrest,
It is compact. Further, the legs and the carrier are fixed to the mounting plate of the backrest, and at this time, the thickness of the legs and the carrier is absorbed by the vertical pipe of the backrest, so that the total thickness is the sum of the thickness of the vertical pipe and the width of the wheels. The condition when not in use is extremely compact as compared with the conventional folding cart.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a knockdown cart according to the present invention.

FIG. 2 is a front view showing a specific configuration of a handle in the embodiment.

FIG. 3 is a partially cutaway view showing a specific configuration of the spring pin.

FIG. 4 is a perspective view showing a use state of the assembled cart.

FIG. 5 is an exploded view showing the first state when the assembled cart is not used.

FIG. 6 is an exploded view showing a second state when the assembled cart is not used.

FIG. 7 is a front view showing a state where the assembled cart is not used.

8 is a sectional view of the assembling cart in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Backrest 1a Vertical pipe 1b Horizontal pipe 1c Mounting plate 2 Handle 2a Vertical part of handle 2b Horizontal part of handle 2c Connecting part 3 Leg 3a L-shaped pipe 3b Vertical part of L-shaped pipe 3c Horizontal part of L-shaped pipe 3d Connecting rod 3e Axle 3f Wheel 4 Loading bed 4a Bending part 5 Spring pin 5a Projection 5b Wire spring 6 Locking hole 7 Mounting screw 8.9 Screw hole

Claims (2)

[Claims] 1. A backrest having a pair of upper and lower horizontal pipes fixed between a pair of left and right vertical pipes, a handle having a pair of left and right vertical parts insertable from above the vertical pipe, and a lower part of the vertical pipe. A leg 2 having a connecting rod extending in a direction opposite to the horizontal part of the L-shaped pipe inserted into the vertical part of the L-shaped pipe insertable from the side, and wheels mounted via an axle provided at right angles to the connecting rod. A pair of members, and a U-shaped carrier having a pair of left and right bent portions insertable into a horizontal portion of the L-shaped pipe, wherein a vertical portion of the handle and a vertical portion of the L-shaped pipe at the leg are provided. Further, a spring pin is provided on the bent portion of the loading platform so as to be freely protruded, and the spring pin is engaged with two upper and lower portions of each of the vertical pipes on the backrest and a horizontal portion of each of the L-shaped pipes on the leg. Holes are provided so that these members can be attached freely, and a narrow mounting plate is installed between the horizontal pipes in the backrest so that the back surface is fixed to a semicircular arc on one side of the horizontal pipe. The L-shaped pipe and the carrier can be fixed to the back surface of the mounting plate along a surface formed by the vertical pipe and the horizontal pipe of the backrest. 2. The assembling cart according to claim 1, wherein the handle is formed by connecting horizontal portions of two sets of L-shaped pipes with a connecting pipe.