JP2529273Y2 - Bogie based corner joint - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a cart-based corner joint such as a hand cart, a shelf frame cart, a frame box cart, and a flat cart.

[Conventional technology]

Conventionally, a corner joint of this type is made of a synthetic resin molded product or a metal processed product having a square shape, and provided with an inverted U-shaped rising portion at an outer peripheral edge which is adjacent to and at a right angle, and has a vertical, A receiving plate that forms an insertion groove of a back surface opening that allows insertion of a flange or a web of an angle material serving as a horizontal frame, and through which a number of mounting holes are penetrated along each rising portion, and that connects both rising portions. There has been known a corner member of a container truck in which bolt holes for attaching a turning wheel and a fixed wheel are formed in a rectangular shape so as to form a rectangular shape.
-18256 (Japanese Utility Model Application Laid-Open No. 61-134481)).

Thus, this corner member has a turning plate or a fixed ring attached to the receiving plate, and a number of holes to be attached to the web or the flange, which are appropriately separated in the longitudinal direction, and a plurality of holes to be attached are provided.
A flange or a web of an angle material serving as a horizontal frame is inserted into each of the insertion grooves, and a bolt is inserted into the selected mounting hole and the mounting hole to constitute a bogie base whose dimensions can be arbitrarily changed.

[Problems to be solved by the invention]

However, the conventional bogie-based corner joint requires two types for the left and right, because the bolt holes for attaching the turning wheel and the fixed wheel, which are provided in the receiving plate, have directionality.

In view of the above, an object of the present invention is to provide a bogie-based corner joint that can be used for both left and right types in a single type.

[Means for solving the problem]

In order to solve the above problems, the bogie-based corner joint of the present invention is a bogie-based corner joint that connects frame pipes in a square shape, and connects one pipe and two parallel pipes in two perpendicular directions. Three U-shaped pipe insertion cylinders to be connected, and a projection fitting cylinder provided at a crossing portion of the two pipe insertion cylinders in the two perpendicular directions so as to penetrate them at right angles; A caster mounting portion extending at the middle of the height of each tube portion so as to connect each pipe insertion tube portion at a corner portion surrounded by the three pipe insertion tube portions in the two perpendicular directions. is there.

[Action]

 In the above means, the front surface and the back surface are symmetrical.

〔Example〕

 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an exploded perspective view of a main part of a bogie base using a corner joint according to the present invention.

This bogie base 1 has four corner joints 2
And 1 on both sides in the depth direction (upward left in the figure).
A double pipe 3 used as a frame pipe which is used two by two in the front and rear directions in the frontage direction (downward left direction in the figure), and is joined together in a rectangular frame shape which can be disassembled by the corner joints 2; And a caster 4 detachably attached to the lower part of the truck 2, and is standardized to a size determined from the size of the truck bed.

The corner joint 2 is formed by injection molding an engineering plastic such as PET (polyethylene terephthalate), and has one B-shaped pipe insertion hole (not shown) into which the double pipe 3 in the depth direction can be inserted. A pipe insertion tube portion 5 and a B-shaped pipe insertion hole 6 into which the double pipe 3 in a frontage direction perpendicular to the pipe insertion portion 5 can be inserted;
Two frontage pipe insertion cylinders 7 joined at right angles to the distal end (left end in the figure) and the base end (right end in the figure) of the depth pipe insertion cylinder 5 and provided in parallel with each other;
At the intersection of the base end of the depth pipe insertion tube part 5 and the base end of the outside (lower side in the figure) frontage pipe insertion tube part 7, they are provided at right angles to penetrate them. It is surrounded by a protrusion fitting tube portion 9 having a vertically extending hole 8 through which the protrusion portion is fitted and disengaged, and the three pipe insertion tube portions 5 and 7 having a U-shape in two perpendicular directions. The caster mounting portion 10 extends at the middle of the height of each tube portion so as to connect the pipe insertion tube portions 5 and 7 at the corner portion, and has the same shape on the front and back. And in each pipe insertion tube part 5,7,
As will be described later, screw or bolt insertion holes 11 for fixing the double pipe 3 are provided at appropriate intervals in the longitudinal direction, while the caster mounting portion 10 is provided so as not to lose the same front and back. A plurality of bolt holes 12 for caster mounting bolts are located in the middle in the depth direction and are appropriately separated in the frontage direction, and ribs 13 are appropriately provided on both front and back surfaces. By providing the caster mounting portion 10 at a position intermediate between the heights of the pipe insertion tube portions 5 and 7 in this manner, the corner joint 2 has a symmetrical shape on both sides.
The left and right can be shared by one type.

The double pipe 3 has AA on the outer circumference of a steel pipe with an outer diameter of 28 to 32 mm.
Two types of resin-coated steel pipes 3a and 3b, which are made by bonding and coating a synthetic resin such as S, and forming one and two ridges in the longitudinal direction with the same synthetic resin as the coating resin, are combined by ridges. The corner joint 2 is joined to the double pipe 3 in the depth direction and the frontage direction by inserting a part of the plate nut 15 into a nut hole 14 appropriately penetrating the ridge of the double pipe 3 and inserting the depth pipe. The double pipe 3 is inserted into the tube portion 5 and the frontage pipe insertion tube portion 7, respectively, and each plate nut is inserted.
The screw 15 or the bolt 16 is screwed into the insertion hole 11 so as to be disassembled.

The caster 4 is made of the same engineering plastic or the like as the corner joint 2, has a pair of turning wheels and a fixed wheel, and is inserted into the caster mounting portion 10 of the corner joint 2 through an appropriate bolt hole 12. It is provided detachably by the bolt 17 and other fasteners.

Although the bolt hole 12 of the caster mounting portion 10 in the corner joint 2 is shown as a straight hole in FIG. 1, a stepped hole provided at both ends with a bolt head accommodating step portion capable of burying the bolt head. In this way, when only the cart bases 1 are stacked for storage or transportation, the casters 4 do not rattle on the bolt heads.

Therefore, when the corner joint 2, the double pipe 3, or the caster 4 is damaged, the bogie base 1 can be easily replaced and repaired. When changing the size of the bogie base 1, the bogie base 1 has a double pipe having a required size. The change is facilitated by exchanging with 3.

As shown in FIG. 2, a shelf frame 18 is
Are provided so as to be separable and connectable.

Shelf frame 18 is a resin-coated steel pipe 19a, 19b of various lengths in which a synthetic resin such as AAS is adhesively coated on the outer periphery of a steel pipe having an outer diameter of about 28 to 32 mm.
19c, 19d are joined by various resin joints 20a, 20b, 20c made of the same synthetic resin as the covering resin, and are framed in a rectangular parallelepiped shape having an occupied area substantially equal to the occupied area of the bogie base 1, and pillars at four corners. The lower end portion of the resin-coated steel pipe 19a protrudes from the hole 8 of the bogie base 1 as a protruding portion 191a that can be inserted and removed. In order to form a shelf on which the article W is placed, a frame between the upper and lower resin-coated steel pipes 19b on both sides in the depth direction (rightward in the figure) is formed by a resin joint 20c.
Are connected by a plurality of resin-coated steel pipes 19e in the up and down direction through the resin-coated steel pipes 19e on both sides and are connected in multiple stages by a plurality of resin-coated steel pipes 19f in the horizontal direction through the resin joint 20c. In addition, in order to prevent the placed article W from coming out in the depth direction, the upper and lower resin-coated steel pipes 19c in the frontage direction (downward right in the figure) on the rear side are connected via the resin joint 20c. They are connected by a plurality of resin-coated steel pipes 19g in the vertical direction.

The frame provided on the carriage base 1 is not limited to the above-described shelf frame 18, but may be another type of shelf frame, box frame, handle frame, or the like. Also, the trolley is not limited to the frame trolley,
The corner fitting 21 indicated by a two-dot chain line in FIG. 1 may be attached to the carriage base 1 to form a flat carriage on which a container or the like is directly mounted.

The shelf frame 18 has a protrusion 191a and a hole 8 in the bogie base 1.
The fasteners 22 are mounted on the trolley base 1 through the bosses and are attached to the four corners of the trolley base 1 as shown in FIG.
Thus, it is provided so as to be fastened to the bogie base 1.

The fastening metal fitting 22 is a double pipe 3 on the outside of the bogie base 1 in the frontage direction and a resin-coated steel pipe 19 on the lower side in the frontage direction of the shelf frame 18.
c, can be fastened, as shown in FIG. 3, the hoop material is bent into a U-shape that can be engaged with the double pipe 3, and the curved portion is flexibly connected by a hinge pin, and A double-pipe winding section 23 that is bent at one end at a right angle and provided so as to be engageable with the other end and wound around the double pipe 3.
Is connected to the other end of the double pipe winding portion 23 via a hinge pin so as to be freely bent, and the middle is further connected via a hinge pin so as to be freely bent and provided with a resin-coated steel pipe 19c.
Steel pipe engaging portion having an arc portion engageable with the upper half of the steel pipe
24, and a lever 26 which is rotatably attached to one end of the double pipe winding portion 23 and has a latch 25 which is engaged with and disengaged from the tip end of the coated steel pipe engaging portion 24. Then, after the lever 26 is turned upward to release the latch 25, the coated steel pipe engaging portion 24 is removed.
Is bent as shown by a two-dot chain line and removed from the resin-coated steel pipe 19C, whereby the shelf frame 18 can be separated from the bogie base 1.

 In FIGS. 1 and 2, reference numeral 27 denotes a stacking bracket.

Note that, in the above-described embodiment, the case where the corner joint 2 is formed of engineering plastic has been described. However, the corner joint 2 may be formed of AAS or the like similar to the coating resin of the resin-coated steel pipes 19a to 19g. The double pipe 3 and the resin-coated steel pipe 19a can be joined by bonding.

Further, the frame pipe is not limited to the double pipe 3, but may be the same as the resin-coated steel pipes 19a to 19g of the shelf frame 18.

[Effect of the invention]

As described above, according to the present invention, the front surface and the back surface are symmetrical, so that one type can share both the left and right types, thereby achieving cost reduction, and, in turn, making the corner joint inexpensive. Can be provided.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, FIG. 1 is an exploded perspective view of a main part of a bogie base using a corner joint according to the present invention, and FIG. 2 is a part of a shelf bogie using the bogie base. FIG. 3 is an exploded perspective view with illustration omitted, and FIG. 3 is a perspective view of a fastener. 1 ... Bogie base, 2 ... Corner joint, 3 ...
Double pipe, 3a, 3b: resin-coated steel pipe, 5: depth pipe insertion cylinder, 6: pipe insertion hole, 7: frontage pipe insertion cylinder, 10: caster mounting part, 12: bolt hole,
13 ... Rib.

Claims (1)

(57) [Scope of request for utility model registration] 1. A bogie-based corner joint for connecting frame pipes in a square shape, wherein one pipe and two
Three U-shaped pipe insertion cylinders for connecting two parallel pipes in two right angles and a right angle penetrating through the intersection of the two pipe insertion cylinders in the two right angles. The protrusion fitting cylinder portion and the corner portion surrounded by the three pipe insertion cylinder portions in the two right angles extend at an intermediate height of the respective tube insertion portions so as to connect the pipe insertion tube portions. A trolley-based corner joint comprising a caster mounting portion.