JP2997870B2 - Manufacturing method of shopping cart basket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a shopping cart basket used in a supermarket or the like, and a shopping cart basket.

[0002]

2. Description of the Related Art Conventionally, there is, for example, a shopping cart having a configuration as shown in FIG. This shopping cart 1 is a cart 3 having a plurality of casters 2
And a basket 10 protruding forward on the cart 3, and a gate-shaped push frame 5 provided at the rear of the basket 10. In addition, a seat frame 7 for a foldable infant seat is pivotally attached to the push frame 5 in a suspended manner.

The basket 10 is composed of a large number of vertical wires 11 and a large number of horizontal wires in a lattice shape, and a front surface 10b and both side surfaces 10c, 10d are provided with a plurality of U-shaped reinforcing frames 20.
Was welded and reinforced.

[0004] Such a method of manufacturing the cage 10 is generally performed as follows.

[0005] First, as shown in FIG.
1 and a large number of horizontal wires 13, the jigs (not shown) are used to superimpose the bottom surface forming portions 11 a, 13 a in a grid pattern, and the intersections of the two are fixed by spot welding, and the bottom surface 10 a is fixed. Form. At this time, a front face forming part 11b and side face forming parts 13c, 13d are formed outside the bottom face forming parts 11a, 13a.

Next, the front face forming part 11b and the side face forming part 1
3c and 13d are bent upright with respect to the bottom surface 10a,
A front surface 10b and left and right side surfaces 10c and 10d are formed (see FIG. 9).

Next, a plurality of U-shaped reinforcing frames 20 are prepared as shown in FIG. 10, which are made of a wire thicker than the vertical wire 11 and the horizontal wire 13.

Subsequently, as shown in FIG.
Front part 20b on the front side 10b and side parts 20c and 20d.
Are superimposed on the side surfaces 10c and 10d, respectively, and the intersections in the form of a grid are rotated for each of the surfaces 10b, 10c and 10d in a state where they are positioned by a separate jig.
The reinforcing frame 20 was fixed by spot welding.

[0009]

However, in such a conventional method for manufacturing a basket for a shopping cart, the reinforcing frame 2 is required.
In the welding process of No. 0, the jig is attached, and the heavily bent cage 10 is spot-welded on each surface while changing the direction by hand. Therefore, the welding operation is troublesome and requires great arm strength.

In addition, when spot welding the longitudinal end of the basket 10, the basket 10 must be supported in a state where the weight is left and right unbalanced, so that the work is difficult and the work accuracy may not be stable.

In the three-dimensional basket 10, the movement of the electrode for spot welding is restricted at the corner of the basket 10. Generally, in the spot welding, a plurality of intersections are simultaneously welded using a flat electrode. Therefore, at the corners of the basket 10, there is a possibility that the portions in contact with the plate-shaped electrodes may overlap. This overlapping spot welding has a problem that the welding force at the welding point is reduced.

[0012] Further, in the shopping cart 1, the front portion of the basket 10 may come into contact with a display shelf or the like during traveling by hand pushing. The basket 10 formed as described above has only one vertical wire 11 at its front corner, that is, the side edge extending in the left-right and up-down directions of the front surface 10b. Therefore, basket 1
When the front corner portion of the wire contacts the display stand or the like, the vertical wire 11
However, there was a problem that it was deformed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above, and has been made in consideration of the above problems, and has the following effects. The purpose is to provide.

[0014]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, and a method of manufacturing a basket for a shopping cart according to the present invention comprises: a plurality of vertical wire members forming a bottom surface and a front surface; Numerous horizontal wires forming a bottom surface and left and right side surfaces, a front reinforcing frame formed planarly and having left and right side edges, and a pair of left and right side reinforcing frames formed planarly and each having a front edge And, using a large number of the vertical wire members and a large number of the horizontal wire members to form the bottom surface and superimpose them in a lattice shape, and superimpose a large number of the front wire forming portions of the vertical wire materials and the front reinforcing frame in a lattice shape. And, the left and right side surface forming portions of a large number of the horizontal wires and a pair of the side reinforcing frames are respectively overlapped in a lattice shape, and the vertical wires and the horizontal wires mutually, and the vertical wires and the front reinforcing frames mutually, and the horizontal Wire and a pair of side reinforcing frames A welding step of welding each space between them to form a basket that is spread out in a plane, a bending step of bending the front surface forming portion and the left and right side forming portions of the basket that is spread out in a vertical shape, and bending. Forming a pair of protection pillars by welding the left and right side edges of the front reinforcement frame and the left and right front reinforcement edges of the left and right side reinforcement frames in the formed front formation part and side formation part, respectively. A method for manufacturing a shopping cart basket, characterized in that:

Further, the shopping cart basket has a large number of vertical wires forming a bottom surface and a front surface, and a large number of horizontal wires forming a bottom surface and left and right side surfaces so as to be superposed on the vertical wire materials in a lattice pattern. And a front reinforcing frame which has side edges on the left and right, respectively, and is welded in a grid pattern to the front surface forming portions of the plurality of vertical wire members, and a left and right side surface forming portion of a large number of the horizontal wire members having a front edge, A pair of side reinforcing frames welded in a lattice shape, wherein left and right side edges of the front reinforcing frame and front ends of the left and right side reinforcing frames are welded to each other, and left and right side edges of the front surface. And a pair of protection columns extending vertically.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. In the following description, components that are the same as or equivalent to those in the conventional example will be assigned the same reference numerals, and descriptions thereof will be omitted.

FIG. 1 shows a main structure of a shopping cart 1, wherein a cart 3 having a plurality of casters 2 and a cart 3 are provided.
The basket 10 includes a basket 10 protruding upward and a hand pushing frame 5 provided at a rear portion of the basket 10.

As shown in FIGS. 6 and 7, the basket 10 according to the present embodiment has a large number of vertical wires 11 and a large number of horizontal wires 13.
It consists of a front reinforcing frame 15 and left and right side reinforcing frames 17, 17, and has a bottom surface 10a, a front surface 10b, and left and right side surfaces 10c, 1.
0d. Protective columns 19, 19 extending vertically are formed on the left and right side edges of the front surface 10b.
An opening 10e is formed on the rear side.

A push frame 5 having a grip (not shown) is fixed to the rear ends of the left and right side surfaces 10c and 10d. The push frame 5 includes a seat frame 7 for an infant.
The upper end is pivotally connected to open and close the opening 10e like a door.

Next, a method of manufacturing the above-described basket 10 will be described.

First, in the welding step, as shown in FIG. 2, a number of vertical wires 11 and a number of horizontal wires 13 are prepared. Each of the wires 11 and 13 is, for example, a steel wire having a diameter of about 3 mm, and the vertical wire 11 is formed of a bottom forming portion 11a and a front forming portion 11.
The horizontal wire 13 has a length that forms the bottom surface forming portion 13a and the left and right side surface forming portions 13c and 13d.
Each has been disconnected.

The front reinforcing frame 15 is, for example, a steel wire having a diameter of about 6 mm, and as shown in FIG. 3, an upper edge 15a having the same length as the front width of the basket 10, and extends vertically to face each other. A thing formed in the shape of a day having both ends 15b, 15b is prepared.

The pair of left and right side reinforcing frames 17 is made of, for example, a steel wire having a diameter of about 6 mm, and as shown in FIG.
A horizontally long Japanese character having an upper edge 17a and a front edge 17b having the same length as the length in the front-rear direction is prepared. In the illustrated example, the front reinforcing frame 15 and the side reinforcing frame 17 have the shape of the sun, but they may have a mouth shape, an E shape, a U shape, or the like.

Each member prepared in this manner is arranged in a planar lattice using a jig (not shown) as shown in FIG. That is, a large number of vertical wires 11 and a large number of horizontal wires 13 are arranged at predetermined intervals, and the bottom surface forming portion 11a of the vertical wire 11 and the bottom surface forming portion 13a of the horizontal wire 13 are overlapped in a grid pattern. At this time, the front face forming part 11b is formed outside the bottom face forming part 11a, and the bottom face forming part 13a is formed.
The side surface forming portions 13c and 13d are formed outward.

The front reinforcing frame 1 is provided on the front forming portion 11b.
5 are superimposed in a lattice shape, and the side surface forming portions 13c, 13d
Next, the side reinforcing frames 17, 17 are superimposed in a grid pattern. At this time, the upper end edge 15a of the front reinforcing frame 15 abuts on the distal ends of the numerous vertical wires 11, and the upper edge 17a of each side reinforcing frame 17 has one of the distal ends of the horizontal wires 13 and the other. Abutment with the tip, and the side surface forming part 1
When 3c, 13d is bent, its front edge 17b,
17b is a side edge 15b, 1 of the upright front reinforcing frame 15.
5b are positioned so as to abut each other in parallel.

In this state, each vertical wire 11 and each horizontal wire 13
Each of the vertical wires 11 and the front reinforcing frames 15 and each of the horizontal wires 13 and the side reinforcing frames 17 and 17 are welded to each other by spot welding to form the cage 10 which is developed in a plane.

In the spot welding, a flat electrode is used, and a plurality of welding points are simultaneously welded. At this time, since the entire surface of the object to be spot-welded is developed in a plane, even if the flat electrode arrives at the end or the corner, its movement is not restricted, and the overlapping spot welding is performed. Can be avoided. Further, the welding of the reinforcing frames 15, 17, 17 can be performed on a single plane, so that a large force is not required for the welding work, and the work can be performed easily, efficiently, and with high work precision. it can.

Next, in the bending step, the cage 10 developed in a plane is bent by a press machine as shown in FIG.

That is, the bottom surface forming portions 11a and 13a are used as the bottom surface 10a, and the front surface forming portion 11b and the side surface forming portions 13c and 13d are bent upright to form the front surface 10b and the side surfaces 10c and 10d. At this time, the reinforcing frames 15, 17, 17 are located outside the vertical wire 11 and the horizontal wire 13, respectively.

As a result, the upper edge 15a of the front reinforcing frame 15 on the front surface 10b and the upper edges 17a, 17a of the side reinforcing frames 17, 17 on the side surfaces 10c, 10d are aligned on the same plane, and are on the left and right sides. Edge 15b, 15b
Are in contact with the front edges 17b, 17b, respectively.

Subsequently, in the protection pillar forming step, the side edge 15b and the front edge 17b that are in contact with each other are welded to each other to form the protection pillar 19.
And the front reinforcing frame 15 and the side reinforcing frames 17 and 17 are integrated to form the basket 10.

The welding of the side edge 15b and the front edge 17b can be performed with the longitudinal direction of the basket 10 turned up and down.
The welding operation can be easily performed. In addition, protection pillar 19
Is located on the front side 10b of the basket 10 so as to extend in the vertical direction on both left and right front corners, and prevents deformation of the vertical wire 11 (or the front row of horizontal wire 13) due to contact with a protruding object such as a display shelf. In addition, the entire basket 10 is made strong.

The basket 10 formed in this manner is the upper edge 1
A decorative frame (not shown) is fixed to the upper part 5a and the upper edges 17a, 17a, and a hand-push frame 5 and a seat frame 7 are attached to the rear part, and the shopping cart 1 is completed by mounting it on the trolley 3. .

[0034]

As described above, according to the method of manufacturing a basket for a shopping cart of the present invention, since the welding operation of the reinforcing frame is performed in a state where the vertical and horizontal wires are developed in a plane, a large force is applied. It is not necessary, and the work can be performed easily and efficiently, and the work accuracy can be improved.

Further, since the reinforcing frames are welded in a plane state, even if the flat electrode of spot welding reaches the end or the corner, the movement is not restricted, and therefore, the conventional example is not used. As described above, appropriate welding can be performed while avoiding overlapping spot welding.

Further, since the shopping cart basket according to the present invention is provided with a pair of protection columns extending vertically in the front left and right side edges of the basket, the basket is deformed by contact with a protruding object such as a display shelf. The effect which can prevent is produced.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing an example of a shopping cart.

FIG. 2 is a perspective view showing a vertical wire and a horizontal wire used in the method of manufacturing a basket for a shopping cart according to the present invention.

FIG. 3 is a perspective view showing a front reinforcing frame.

FIG. 4 is a perspective view showing a side reinforcing frame.

FIG. 5 is a perspective view showing a state in which a vertical wire, a horizontal wire, a front reinforcing frame, and a side reinforcing frame are planarly overlapped in a welding step.

FIG. 6 is a perspective view showing a bent state in a bending step.

FIG. 7 is a partially enlarged view of the front surface in FIG. 6;

FIG. 8 is a perspective view showing a state in which vertical wires and horizontal wires are overlapped in a conventional method for manufacturing a shopping cart basket.

FIG. 9 is a perspective view showing a state of being bent from the state of FIG. 8;

FIG. 10 is a perspective view of a conventional reinforcing frame.

FIG. 11 is a perspective view showing a state where a reinforcing frame is welded to FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shopping cart 10 Basket 10a Bottom surface 10b Front surface 10c, 10d Side surface 11 Vertical wire material 13 Horizontal wire material 15 Front reinforcement frame 15b Side edge 17 Side reinforcement frame 17b Front edge 19 Protection column

Claims (2)

(57) [Claims] A plurality of vertical wires forming a bottom surface and a front surface, a plurality of horizontal wires forming a bottom surface and left and right side surfaces,
A large number of the vertical wire members and a large number of the horizontal wire members, using a front reinforcing frame formed in a plane and having left and right side edges, and a pair of left and right side reinforcing frames formed in a plane and having a front edge respectively. While forming the bottom surface and stacking them in a grid, a large number of the front side forming portions of the vertical wire members and the front reinforcing frame are stacked in a grid shape, and a pair of left and right side forming portions of the horizontal wire members. The side reinforcing frames are overlapped with each other in a grid pattern, and the vertical wires and the horizontal wires are mutually welded, and the vertical wires and the front reinforcing frames are mutually welded, and the horizontal wire and the pair of side reinforcing frames are welded, respectively. A welding step of forming a basket that has been developed in a plane; a bending step of bending the front forming section and the left and right side forming sections of the basket that has been spread in a plane, respectively; Said in the part A protective column forming step of welding the left and right side edges of the surface reinforcing frame and the front edges of the left and right side reinforcing frames to form a pair of protective columns, respectively. Method. 2. A large number of vertical wires forming a bottom surface and a front surface, a large number of horizontal wires stacked in a lattice pattern on the large number of the vertical wires to form a bottom surface and left and right side surfaces, and left and right sides. A front reinforcing frame having an edge and welded in a lattice shape to the front surface forming portions of a large number of the vertical wires, and a front edge and being welded in a grid shape to the left and right side surface forming portions of a large number of the horizontal wires, respectively. A pair of side reinforcing frames, wherein the left and right side edges of the front reinforcing frame and the front edges of the left and right side reinforcing frames are welded to each other and extend vertically to the left and right side edges of the front surface. A basket for a shopping cart, comprising a protective pillar of (1).