JPS621950Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a brace installed along a vertical plane between the pillars in order to reinforce the shelf body in a double pillar shelf.

Conventional technology: Conventionally, vertical braces have included turnbuckles and round steel materials with steel plates welded to the joints with columns,
Although various other methods have been used, the most common method is to drill bolt holes in both ends of commercially available strip material and bolt it to the posts. This method has the advantages of being easy to process, low manufacturing costs, and not interfering with items being stored or taken out because the cross section is flat and the thickness of the plate is thin.

However, since bolt holes are drilled in the strip material, in order to obtain a predetermined strength, the effective cross-sectional area excluding the bolt holes must be greater than a certain value. Therefore, the width of the strip material needs to be at least as wide as the effective cross-sectional area excluding the bolt holes. When the vertical brace is attached to a column, it is necessary to provide a fairly long notch for penetrating the brace because the width of the vertical brace is large. This was a factor that reduced the strength of the support. Furthermore, in order to attach the vertical brace to the column, bolt holes must be provided in the column, and the bolt holes are close to the notch, which also reduces the strength of the column.

Problems to be Solved by the Invention In order to improve this, there was a vertical brace a with a ladle-shaped notch at both ends as shown in Figure 1, but a press as shown in Figure 2 was used. When processing by punching, the notches b (portions indicated by hatching in Fig. 2) are distributed on both sides of the strip material, so the notches b are narrow, and when punching, the end face It was easy to curve and burr easily.

Even if the vertical brace a is attached to the column, the length of the notch for penetrating the brace in the column can be shortened, but since the notch b is distributed on both sides, the bolt hole of the column and the notch can be shortened. It was not possible to get a sufficient distance from the chip.

Also, a vertical brace c as shown in Figure 3
However, as shown in Fig. 4, in the vertical brace c, the notch d is wide and the workability is good, but since the notch d exists only on one side, it is difficult to process during press punching. The resulting reaction force along the surface of the strip material was directed toward the side opposite to the notch d, and there was a risk that the strip material would bounce in that direction.

When the same vertical brace c is attached to a post, the notch d is in the same direction, so the notch for passing through the brace on one of the posts can be separated from the bolt hole on the post, but the notch for passing through the brace on the other post The notch has the disadvantage of being close to the bolt hole.

Means and Effects for Solving the Problems This proposal relates to an improvement of vertical braces for double-column shelves that eliminates the above-mentioned drawbacks. In a vertical brace made of a single plate-like material, both end portions of the brace that are in contact with the column through-holes are separated from each other by leaving a cross section that is approximately equal to the effective cross section of the bolt joint with the column web portion at both ends of the brace, excluding the bolt holes. For joining a vertical brace to a column by deflecting it to the left and right opposite sides and having a predetermined length notch, placing the upper deflection notch of the brace upwardly and arranging the lower deflecting notch of the brace downwardly. Since the distance between the bolt hole provided in the column and the column through-hole can be set sufficiently, stress concentration can be avoided and a decrease in the strength of the column can be prevented.

Embodiment An embodiment of the present invention illustrated in FIGS. 5 to 9 will be described below.

1 is a double column type double shelf;
As shown in FIG. 5, several sets of outer pillars 3a, middle pillars 3b, and outer pillars 3c are erected on the horizontal frame 2, a top plate 4 is attached to the top of the pillars 3, and A frame is constructed by attaching side plates 5 to pillars 3. The double-column type compound shelf 1 is completed by further attaching shelf boards, shelf supports, back plates, partition plates, etc. (not shown) to the frame shown in FIG. 5.

In order to reinforce the pillars 3, two vertical braces 6 are attached to the adjacent middle pillars 3b so as to cross each other.

As shown in FIG. 6, the vertical brace 6 is formed by pressing a single thin-walled flat strip-like material, and bolt holes 6a are formed at both ends, and bolt holes 6a are formed in the vicinity of the bolt holes 6a. The cutout portion 6b is formed to be deflected to opposite left and right sides. The effective cross-sectional area of the portion excluding the bolt holes 6a at both ends and the portion excluding the notch portion 6b are equal.

The vertical braces 6 are formed by press working, as shown in FIG. (portions indicated by hatching in FIG. 7) are formed, and one vertical brace 6
is cut and the production is completed. Next, a predetermined length of strip material is fed in and the punching operation is performed again to produce the next vertical brace 6. In this way, continuous stamping is performed.

The vertical brace 6 thus formed is attached to the column 3 as shown in FIGS. 8-9.

That is, two vertical brace mounting members 7 are fixed to a U-shaped column 3 made of steel at a predetermined interval above and below, and the left and right flanges 3d of the column 3 are attached at positions slightly above or below the mounting members 7. An elongated vertical brace through hole 3e is formed in the vertical direction. Further, in the left and right flanges 3d of the pillar 3, a large number of vertically elongated locking holes 3f are provided in two rows at regular intervals in the vertical direction, and a shelf board (not shown) is locked by the locking holes 3f. It is becoming more and more common.

Furthermore, the web 3g of the pillar 3 and the mounting member 7
Bolt holes 3h and 7a are formed through them.

Vertical braces 6 are inserted into the left and right vertical brace through holes 3e, overlapped on the mounting member 7, and fastened together with bolts 8 and nuts 9. In the vertical plane brace 6, the upper notch 6b is arranged above, and the lower notch 6b is arranged below.

Since the embodiments shown in FIGS. 5 to 9 are configured as described above, the width of the vertical brace 6 is reduced by the notch 6b formed in the vertical brace 6, so that the width of the vertical brace 6 is reduced. The size of the vertical brace through hole 3e formed in the column 3 can be reduced, and the strength of the column 3 can be maintained sufficiently.

Furthermore, in this embodiment, when attaching the vertical brace 6 to the column 3, the upper notch 6b is placed upward and the lower notch 6b is placed downward, so that the end of the vertical brace through hole 3e and the bolt hole It is possible to keep a sufficient distance from the center of 3h,
A decrease in the strength of the pillar 3 can be avoided.

Furthermore, in this embodiment, the vertical brace 6
When punching by press working, the notch 6b is sufficiently wide, so the end face of the vertical brace 6 does not curve, there are few burrs, and workability is good, and furthermore, the vertical brace 6 can be continuously formed. If you do,
Two vertical braces 6 are created by one punching operation.
Bolt holes 6a and notches 6b are formed at the ends of the brace 6, and one vertical brace 6 is cut at the same time, making it particularly suitable for mass production.

Furthermore, in this embodiment, the vertical brace 6
Since the cutout portions 6b are provided by deflecting the right and left opposite sides of both ends, when punching is performed by press working, no eccentric load is applied to the press, and the vertical brace 6 is not biased to one side, resulting in good processing accuracy.

Furthermore, in this embodiment, the punching length is shorter than that of the ladle-like vertical brace, so the press load is reduced.

Effects of the invention As described above, in this invention, when punching a thin flat strip-shaped single member into a vertical brace by pressing, the border between the ends of adjacent vertical braces is the center of symmetry. Since the notches are arranged in centrally symmetrical positions, the reaction force along the plane that acts on the strip-shaped single material during punching is not directed toward one width direction of the strip-shaped single material. , acting in opposite directions to the strip-shaped single material so that both reaction forces cancel each other out, and this strip-shaped single material can stably hold its position, and as a result, Machining accuracy is high, and workpieces do not bounce sideways, resulting in good workability.

In addition, in the present invention, both end portions of the vertical brace are deflected to the left and right opposite sides and notched at a predetermined length, the upper deflection notch of the brace is placed upward, and the lower deflection notch of the brace is placed downward. Therefore, it is possible to increase the distance in the vertical direction between the bolt hole in the column web portion and the brace through hole in the flange portion of the column, prevent a local reduction in the cross-sectional area of the column, and avoid a decrease in the strength of the column.

[Brief explanation of the drawing]

1 is a side view of a conventional vertical brace, 2 is a production drawing thereof, 3 is a side view of another vertical brace, 4 is a production drawing thereof, and 5 is a vertical brace according to the present invention. A side view illustrating an embodiment of a double-post type compound shelf using surface braces, FIG. 6 is a side view of a vertical surface brace of the same embodiment, FIG. 7 is a manufacturing drawing thereof, and FIG.
The figure is an enlarged side view of a main part showing the vertical brace of the same embodiment in an attached state, and FIG. 9 is a front view thereof. 1...Double column type compound shelf, 2...Horizontal frame, 3...Column, 4...Top plate, 5...Side plate, 6...Vertical brace, 7...Vertical brace mounting member, 8...Bolt, 9...Nut.

Claims (1)

[Scope of utility model registration request] In a thin-walled, flat, strip-like, single-material vertical brace for a double-column double-shelf using columns with an open cross section, the effective cross section excluding the bolt holes of the bolt joints with the column web portions at both ends of the brace. Both end portions of the brace in contact with the column through hole are deflected to left and right opposite sides, leaving a cross section approximately equal to , and a predetermined length is cut out. A vertical brace for a multi-column shelf characterized by having the notch placed downward.