JPH0986416A - Truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the manufacturing work of the entire truck by constructing a box-like stand opened upward by means of aluminum extruded angular material-made stand main body with an approximately U-letter shape sectional surface and end plates fixed to both ends of the stand main body and forming plural grooves extending in the length directions on the bottom plate surface of the stand main body. SOLUTION: A truck is composed of an oblong box-like stand 1 opened upward and four caster 2 attached to the lower surface rectangle parts of the stand 1. The stand 1 is formed of an aluminum excluded angular material-made stand main body 5 having approximately U-letter shape sectional surface and composed of an oblong bottom plate 3 and side plates 4 erected on both left and right side edges, and two aluminum-made end plates 6 fixed to both front and rear ends of the stand main body 5. Further, on the lower surface of the bottom plate 3, inside expanded shape groove 8 housing the heads of hexagonal bolts 7 are formed in every two lines with an interval in left and right directions in the parts shifted to both left and right sides. In the case of casters 2, shaft part 7b of each hexagonal bolt 7 is inserted in each through hole 14 in this substrate 13 and a nut 15 is screw fitted to this tip end so as to be fixed to the stand 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carriage for carrying, for example, a plastic container or the like.

[0002] In this specification, the term "aluminum" shall include aluminum alloys in addition to pure aluminum.

[0003]

2. Description of the Related Art Conventionally, as a dolly of this type, as shown in FIG. 4, four long and short lengths of a total of four aluminum extruded profile side members (20) (21) having an L-shaped cross section are made of four plastics. A frame-shaped stand (23) having a rectangular shape in plan view formed by connecting the corner members (22), and each corner member of the stand (23)
It is known to consist of four casters (24) mounted on the underside of (22). Each side member (20) (21) of the stand (23) is
Place both ends on the corner member (22) and set the side members (20) (21).
It is fixed to the corner member (22) by screwing a flat head screw (25) penetrating the horizontal wall parts (20a) (21a) of the above from above into a screw hole (26) formed in the corner member (22). There is. Casters
(24) is a bolt (27) having a countersunk head that penetrates the side members (20) (21) and the corner member (22) from above, and the corner member (22).
It is attached to the corner member (22) by using a bolt (28) having a countersunk head penetrating from above only. Side member (20)
The bolt (27) penetrating the (21) and the corner member (22) also functions to connect the side members (20) and (21) to the corner member (22). Then, in order to make the upper surface of the base (23) a flat surface, both end portions of the horizontal wall portions (20a) (21a) of the side members (20) (21) have their upper surfaces as the upper surfaces of the corner members (22). It is fitted in a recess (22a) formed in the upper surface of the corner member (22) so as to be flush. Further, the holes (29) (30) through which the countersunk screws (25) and the bolts (27) having a countersunk head of the side members (20) (21) pass are formed in a dish shape. Further, the upper end of the hole (31) through which the bolt (28) having a countersunk head in the corner member (22) penetrates is also dish-shaped.

[0004]

However, in the conventional truck, the platform (23) is composed of four side members (20) (21) and four corner members (22), which are screw (25). And bolts (27)
Since they are connected by (28), it takes time to assemble them.
Further, since it is necessary to form countersinks (29) (30) in the side members (20) (21), the work takes time. Therefore, there is a problem that the manufacturing work of the entire carriage is troublesome.

An object of the present invention is to provide a carriage that solves the above problems.

[0006]

A trolley according to the present invention comprises:
It consists of a box-shaped base that opens upward and a plurality of casters attached to the bottom surface of the base. The base crosses a square base plate and side plates that are integrally provided on both side edges of the base plate in a rising manner. It is composed of a base body made of aluminum extruded profile with a substantially U-shaped surface, and two end plates fixed to both ends of the base body. The bottom plate of the base body extends in the length direction and opens downward. , And a plurality of grooves are formed so that the head or the square nut of the square bolt does not rotate and does not fall off. It is attached to the base body by using the square nut that is housed.

According to the above trolley, since the pedestal comprises the pedestal body and the end plate fixed to the pedestal body, the pedestal can be assembled by a simple operation of fixing the end plate to the pedestal body. In addition, on the lower surface of the bottom plate of the base body, there is formed a groove that extends in the lengthwise direction and opens downward, and that can accommodate the head of the square bolt or the square nut so that it does not rotate and does not fall off. However, since it is attached to the base body using the square bolt whose head is housed in the groove or the square nut which is housed in the groove, the head or nut of the bolt for mounting the caster is mounted on the base body. Does not project onto the upper surface of the bottom plate, and the work of preventing these from projecting onto the upper surface of the bottom plate in order to make the upper surface of the bottom plate flat becomes unnecessary.

In the above truck, a plurality of tapping screw screw fitting grooves extending in the lengthwise direction are formed in the base body, and tapping screws penetrating the end plate from the outside are screwed into both ends of the tapping screw screw fitting groove. As a result, the end plate may be fixed to the base body. In this case, the tapping screw screw fitting groove can be formed at the time of extrusion molding of the base main body, and it is not necessary to form a screw hole in the base main body or fix a nut, which saves labor. Therefore, the manufacturing work of the entire carriage is simplified. Fix the end plate to the base body by fitting the screw that penetrates the end plate from the outside into the screw hole formed in the base body, or screw the screw that penetrates the end plate from the outside to the nut fixed to the base body. When fixing the end plate to the base body by fitting it,
Since it is necessary to form screw holes in the base body and fix the nuts, which is troublesome, the manufacturing work of the entire carriage becomes troublesome.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.
This will be described with reference to the drawings. In the following description,
The left and right sides of FIGS. 2 and 3 are referred to as left and right, the front side of the paper of FIGS. 2 and 3 is referred to as the front, and the opposite side is referred to as the rear.

Referring to FIGS. 1 to 3, a trolley comprises a box-shaped base (1) having a rectangular shape in plan view, which is open upward, and a bottom surface of the base (1).
It consists of four casters (2) mounted on the corners.

The base (1) is a rectangular bottom plate (3) and a bottom plate.
(3) A base body (5) made of aluminum extruded profile with a substantially U-shaped cross section consisting of side plates (4) integrally provided on the left and right side edges of the base body (5), and at the front and rear ends of the base body (5). It is formed by two fixed aluminum end plates (6).

On the lower surface of the bottom plate (3) of the base body (5), an internally enlarged groove (which extends in the longitudinal direction (front-rear direction) and opens downward and which accommodates the head of the hexagon bolt (7) ( 8) has been formed. Two grooves (8) are formed in the left and right edges of the groove at intervals in the left-right direction. Each groove (8) includes a pair of hanging walls (9) integrally provided on the lower surface of the bottom plate (3) at a predetermined interval in the left-right direction, and each hanging wall (9).
And a horizontal projecting wall (10) that is integrally provided on the lower edge of the projecting part and projects toward the hanging wall (9) side of each other. The space between the hanging walls (9) in each groove (8) is a hexagon bolt.
The head (7a) of (7) is wider than the width across flats and smaller than the diagonal distance so that the head (7a) of the hexagon bolt (7) does not rotate. The distance between the tips of the horizontally projecting walls (10) in each groove (8) is smaller than the width across flats of the head (7a) of the hexagon bolt (7) and smaller than the outer diameter of the shaft (7b). It is made larger, which allows the head (7
Make sure that a) does not fall out of the groove (8). The head (7a) of the hexagon bolt (7) is fitted into the groove (8) from both front and rear ends of the groove (8).

Further, the inner portion of the base (1) at the upper edge of the side plate (4) of the base body (5), the inner portion of the base (1) at the connecting portion between the side plate (4) and the bottom plate (3), and the bottom plate. (3) and 2 on the central side
A groove (11) for fitting a tapping screw extending in the lengthwise direction is formed in each of the grooves (8) outside the groove (8) at the connecting portion with the hanging wall (9) on the inner side in the left-right direction.

The end plate (6) has a rectangular shape having a length equal to the width of the base body (5) in the left-right direction and a width equal to the height of the side plate (4), and the lower edge thereof has an intermediate portion in the left-right direction. On, groove (8)
Strip downward projection having a width equal to the height of the depending wall (9) of the
(6a) is provided integrally. The length of the downward projecting part (6a) is the hanging wall inside the two grooves (8) on the center side in the left-right direction.
(9) The space between them is almost equal to each other, and the lower protrusion (6a) allows the bottom plate (3) and the two grooves (8) on the center side to be formed.
Groove (8) at the connecting part with the hanging wall (9) on the inner side of
Grooves for tapping screws (11) formed on the outer part
Only the openings at the front and rear ends of the groove are closed, and the openings at the front and rear ends of the groove (8) are not closed so as not to interfere with the fitting of the head (7a) of the hexagon bolt (7) into the groove (8). There is. And the end plate
(6) is fixed to the base body (5) by screwing tapping screws (12) penetrating the end plate (6) from the outside in the front-rear direction to both ends of the tapping screw screw fitting groove (11). .
The end plate (6) may be fixed to the base body (5) by an adhesive, partial welding or brazing instead of the above method. In this case, naturally, the tapping screw screw fitting groove (11) of the base body (5) is not required, and the downward projecting portion (6a) of the end plate (6) is not required.

In the caster (2), the shaft portion (7b) of the hexagonal bolt (7) is passed through the through hole (14) formed in the base plate (13), and the nut (15) is screwed into the tip thereof. It is fixed to the base (1) by. In the above, 6 for fixing the casters (2)
Square bolts (7) are used, but square bolts may be used instead. Also, to fix the casters (2),
Instead of using the square bolt that (7a) is housed in the groove (8),
Square nuts such as hexagon nuts and square nuts housed in the groove (8) may be used. In this case, the substrate (13) of the caster (2)
The caster (2) is mounted on the base by screwing the tip of a bolt, which is inserted from below into the through hole (14) formed in the
It is fixed to (1). Also, in this case, the distance between the hanging walls (9) in each groove (8) must be at least the width across flats of the square nut head and smaller than the diagonal distance, so that the square nut does not rotate. In addition, the distance between the tips of the horizontally projecting walls (10) in each groove (8) is set to be smaller than the width across flats of the square nut and larger than the outer diameter of the screw hole. Make sure it does not fall out of the groove (8).

[0016]

According to the trolley of claim 1 of the present invention, as described above, the assembling work of the pedestal is simplified, and the heads or nuts of the bolts for mounting the casters are prevented from protruding above the bottom plate. Since the work for doing so is unnecessary, the work for manufacturing the entire trolley is simplified.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a partially enlarged front view of the same.

FIG. 3 is a partially enlarged transverse sectional view of the base body.

FIG. 4 is an exploded plan view showing a conventional example.

[Explanation of symbols]

 (1) Stand (2) Casters (3) Bottom plate (4) Side plate (5) Stand body (6) End plate (7) Hexagon bolt (7a) Head (8) Groove

Claims (2)

[Claims] 1. A box-shaped base that opens upward and a plurality of casters attached to the bottom surface of the base. The base is integrally provided in a rectangular shape on the bottom plate and on both side edges of the bottom plate in a rising shape. It is composed of a base body made of extruded aluminum with a substantially U-shaped cross section and two end plates fixed to both ends of the base body, and extends in the length direction on the lower surface of the bottom plate of the base body. The caster is formed with a plurality of grooves that are opened downwards and that can accommodate the head or the square nut of the square bolt so as not to rotate and fall off, and the caster has the square bolt with the head accommodated in the groove. , Or a dolly attached to the base body using a square nut housed in the groove. 2. A plurality of tapping screw screw fitting grooves extending in the length direction are formed in the base body, and tapping screws penetrating the end plate from the outside are screwed into both ends of the tapping screw screw fitting groove. The trolley according to claim 1, wherein the end plate is fixed to the pedestal body.