JPH0211558Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention relates to a joint structure for a crosspiece joint for civil engineering and construction.

Here, a crosspiece joint for civil engineering and construction is a crosspiece assembly formed by connecting at least one horizontal beam and one vertical beam at a right angle or at an angle to each other, and is attached to the inside or outside of a building. It is installed around building sites, parks, playgrounds, factories, etc., and areas are installed along roads, rivers, etc., such as window rails, stair rails, balcony handrails, bridge handrails, etc. Handrails, window lattices, lattices, partition lattices, etc., pastures, farms, flower beds, lawns, roads, rivers,
This includes fences such as partitions or protective fences of ponds, lakes, etc., walls of building exteriors, hedges, etc.

[Prior art] In conventional joint structures, two members such as the horizontal frame and the vertical frame are fixed with screws or rivets, but with this method, the cost of fixing members such as screws increases, and , the fixing work was time-consuming and labor-intensive, and the cost was high.

Therefore, after the horizontal frame and the vertical frame are fitted and joined, a part of the horizontal frame is forcefully deformed to protrude into a flat shape, and this deformed protrusion is engaged with the receiving hole of the vertical frame to prevent the vertical frame from being pulled out. Fixation was suggested.

[Problems to be solved by the invention] This caulking fixing method does not particularly require fixing members such as screws, so the material cost is low, and the fixing work does not require much time and effort. The plating and paint on the parts were considerably damaged, leading to rust and corrosion at the joints.

Therefore, the purpose of this invention is to fit and fix the product without hitting the product surface at all, so there is no rust or corrosion of the joint due to damage to the plating or paint, and the joint strength is maintained high over a long period of time. To provide a joining structure for a jointed crosspiece for civil engineering and construction, which requires no fixing members, has low material costs, and requires little time and effort for fixing work.

[Means for Solving the Problems] Hereinafter, it will be explained using the reference numerals in the attached drawings. In the joint structure of the civil engineering construction crosspiece joint of the present invention, two members 1 and 4 are joined in a cross-sectional manner. A protruding piece 2 is provided on one member 1, and the protruding piece 2 includes:
A vertical groove 3a opening in the tip end surface 2a of the protruding piece, a lateral groove 3b continuous to the side of the proximal end of the vertical groove 3a, and a lateral protrusion 3c arranged between the tip end surface 2a of the protruding piece and the lateral groove 3b are provided.

Further, the protruding piece 2 has a horizontal groove 3 with respect to the vertical groove 3a, with an interval equal to the width between the pair of side walls 4a, 4b of the other member 4 between the protruding piece 2 and the innermost end of the horizontal groove 3b.
A horizontally long cut and raised piece 7 that slopes upward toward the horizontal groove 3b is provided on the opposite side of the horizontal groove 3b.

The side wall 4a of the member 4 that is fitted into the vertical groove 3a of the protruding piece 2 has a vertical groove 6 whose depth is equal to the height of the protruding piece 2.
A is provided, and the vertical groove 6a is separated from a groove portion 6c that opens in the base end surface 4c of the member by a partition wall portion 6b that is continuous with the main body portion of the side wall 4a.

A vertical groove 5 into which the protruding piece 2 is fitted is provided in the side wall 4b of the member 4 facing the side wall 4a, and the depth of the vertical groove 5 is made equal to the height of the protruding piece 2. Fit the partition wall 6b of the member 4 into the horizontal groove 3b, fit the horizontal protrusion 3c of the protruding piece 2 into the vertical groove 6a of the member 4, and fit the tip end surface 7a of the cut and raised piece 7 into the side wall 4b of the member 4. bring it into contact.

[Function] In this joining structure, while fitting the vertical groove 3a of the protruding piece 2 into the side wall 4a of the member 4, the vertical groove 5 of the member 4 is fitted.
Fit into the protruding piece 2. Thereafter, by laterally moving the member 4 along the protruding piece 2, the partition wall portion 6b of the member 4 is fitted into the lateral groove 3b of the protruding piece 2, as shown in FIGS. 3 and 4. at the same time,
The horizontal protrusion 3c of the protruding piece 2 is fitted into the vertical groove 6a of the member 4. When this member 4 is moved laterally, the edge of the vertical groove 5 comes into sliding contact with the inclined front surface of the cut and raised piece 7 and presses the cut and raised piece 7 toward the main body of the protruding piece 2.
The cut and raised piece 7 which has been elastically deformed so as to be bent back passes through the vertical groove 5 of the member 4. After passing through the vertical groove 5,
The cut and raised piece 7 again protrudes from the main body of the protruding piece, and its tip surface 7a abuts the outer surface of the side wall 4b.

Thus, the movement of the member 4 to separate from the member 1 in the direction perpendicular to the member 1 is caused by the engagement between the horizontal groove 3b of the protruding piece 2 and the partition wall portion 6b of the member 4, and the engagement between the horizontal protrusion 3c of the protruding piece 2 and the member. This is prevented by fitting with the vertical groove 6a of No.4. Also, member 4 is member 1
The movement along the side wall 4 of the member 4
This is prevented by the contact between b and the cut and raised end surface 7a. That is, member 1 and member 4 are interconnected,
It has sufficient joint strength as a crosspiece joint such as a handrail.

[Effects of the invention] As described above, the joint structure of the invention has the following advantages:
A connection method that utilizes the prevention of slippage by fitting the horizontal protrusion 3c of the protruding piece 2 into the vertical groove 6a of the member 4, and by abutting the side wall 4b of the member 4 with the tip surface 7a of the cut-and-raised piece 7. Since the surface of the product is not hit hard, there is no damage to plating or painting, and the joint strength can be maintained over a long period of time. Additionally, since no fixing members such as screws or rivets are used, material costs can be reduced, and since all the joining work is a simple mating operation, the work can be done more efficiently with less labor, reducing joining costs. is possible.

[Brief explanation of the drawing]

The drawings show a joining structure according to an embodiment of the present invention, in which FIG. 1 is a perspective view of both members before they are joined, and FIG. 2 is a perspective view of both members after they are joined. Figure 3 is a sectional view taken along line A-A' in Figure 2, and Figure 4 is a cross-sectional view of Figure 2.
5 is a sectional view taken along the line B-B' in the figure, and FIG. 5 is a sectional view taken along the line CC' in FIG. 1... Member, 2... Protruding piece, 3a... Vertical groove, 3
b...Horizontal groove, 3c...Horizontal protrusion, 4...Member,
5... Vertical groove, 6a... Vertical groove, 6b... Partition wall part,
7...Cut and raised piece.

Claims (1)

[Scope of utility model registration request] A protruding piece 2 is provided on one member 1 of the two members 1 and 4 that are joined in a cross-sectional manner, and the protruding piece 2 has a vertical groove 3a that is open to the distal end surface 2a of the protruding piece;
A continuous lateral groove 3b on the side of the proximal end of a, and a lateral protrusion 3 arranged between the protruding piece distal end surface 2a and the lateral groove 3b.
A horizontal groove 3b is provided with respect to the vertical groove 3a, and an interval equal to the width between the pair of side walls 4a, 4b of the other member 4 is provided between the innermost end of the horizontal groove 3b.
A horizontally long cut-and-raised piece 7 is provided on the opposite side to the horizontal groove 3b and slopes upward toward the horizontal groove 3b.
A vertical groove 6a having a height equal to the height of The side wall 4b of the member 4 is provided with a vertical groove 5 into which the protruding piece 2 is fitted, and the depth of the vertical groove 5 is made equal to the height of the protruding piece 2.
The partition wall portion 6b of the member 4 is fitted into the horizontal groove 3b of the member 4, and the horizontal protrusion 3c of the protruding piece 2 is fitted into the vertical groove 6a of the member 4, and the tip surface 7a of the cut and raised piece 7 is fitted into the vertical groove 6a of the member 4. A joint structure of a crosspiece joint for civil engineering and construction that is brought into contact with a side wall 4b.