JPH09100516A - Upper cover mounting method of buffer stop fence post - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mount an upper cover on the upper end of a buffer stop fence post and eliminate the need for a grinding device or the like which grinds welding equipment or welding burning. SOLUTION: The upper end 12 of a buffer stop fence post 11 is expanded with press work, thereby forming an expanded area. The upper cover of the buffer stop fence post 11 is covered over the upper part of this fence post. The upper side plate 62 around this upper cover is bendingly mounted on the outer peripheral expanded area of the upper end of the expanded fence post 1, thereby winding the bent upper cover side plate 62 around the outside surface of the expanded area of the upper end of the fence post 1 by press work.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for attaching an upper lid of a vehicle stop fence to an upper end of the fence by press working.

[0002]

2. Description of the Related Art Conventionally, the upper lid of this type of car stop fence is attached to the upper end of the car stop fence by welding.

[0003]

Since the upper lid of the conventional car stop fence is attached to the upper end of the fence by welding, welding burn occurs on the fence and the upper lid after welding, and this kind of car stop fence is also used. Since it is mainly made of stainless steel and is used without coating, it has a drawback that it is unsightly.

Further, there is a drawback in that the welding equipment for performing the welding and the labor for polishing the weld burn itself are expensive.

According to the present invention, there is no need for welding equipment for attaching an upper lid to the upper end of a car stop fence pillar by press working, welding equipment for performing welding, and a grinding device for grinding weld burn, and the car stop fence can be manufactured at low cost. An object of the present invention is to provide a method for attaching an upper lid to a pillar.

[0006]

In order to solve this problem, according to the present invention, the upper end of the car stop fence is expanded by pressing to form an enlarged portion, and the upper lid of the car stop fence is placed on the upper end of the fence. Cover.

The folded upper lid side plate of the upper lid is attached to the outer periphery of the enlarged portion of the upper end of the fence pillar that is pushed out, and the folded upper lid side plate is wound around the outer surface of the enlarged portion of the upper end of the fence pillar by press working. did.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION A detailed description will be given below with reference to the accompanying drawings showing an example of an embodiment of a method of attaching an upper lid to a car stop fence of the present invention.

FIG. 1 shows a car stop fence post with a handle pulled out, FIG. 2 is a plan view of the car stop fence post, and FIG. 3 is an A of FIG.
FIG. 4 is a cross-sectional view taken along a line A. 4 to 6 show a procedure for attaching an upper lid to the upper end of the car stop fence by press working.

The car stop fence 1 is mainly made of a stainless steel pipe 11. A hole 21 into which the pipe 11 is inserted is provided, a tapered portion 22 that extends outward from the upper end of the hole 21 is formed, and a taper portion 23 is formed in the opposite direction from the tip of the tapered portion 22. The female mold 2 is provided.

Further, a convex portion 31 which is inserted into the pipe 11 is formed, and a taper portion 32 which is equal to the taper portion 22 outward from the base end of the convex portion 31 and a reverse direction which is connected to the tip of the taper portion 32, A male pipe working die 3 including a tapered portion 23 and a tapered portion 33 is provided.

Then, the pipe 11 of the car stop fence 1 is inserted into the female die 2 for pipe processing, the upper end 12 of the car stop fence 1 is slightly projected from the female die 2, and the pipe work is made on the upper end 12. Insert the convex portion 31 of the male mold 3 into the male mold 3 and insert the male mold 3 into the female mold 2.
Press to press. And this car stop fence post 1
The upper end portion 12 of the pipe 11 is formed as an enlarged portion 4 which is expanded outward in a mountain shape by the male and female dies 2 and 3 for pipe processing.

Further, a hole 51 into which the pipe 11 is inserted is provided, and a large diameter portion 52 into which the mountain-shaped enlarged portion 4 is inserted is formed at the upper end of the hole 51. From the inner bottom surface 53 of the large diameter portion 52. A female mold 5 for winding around the upper lid is provided with the inner surface extending to the outer wall 54 as an R portion 55.

The upper lid 6 of the car stop fence 1 which is produced by press work in advance has a concave fitting portion 61 in which the upper surface of the central portion is recessed from the periphery, and the periphery is bent downward to form an upper lid side plate 62. is there.

Further, a U-shaped handle 7 for pulling up the car stop fence 1 from the road surface or the like is provided in the concave fitting portion 61. Therefore, the grip portion 71 of the handle 7 is attached to the concave fitting portion 61 of the upper lid 6.
Insertion holes 63, 63 for inserting the hanging parts 72, 72 are formed. Then, the hanging parts 72, 72 of the handle 7 are fitted into the insertion holes 63, 63 from the upper surface, and the hanging parts 72, 7 are
The lower end of 2 is fixed by a connecting rod 73 so that it cannot be pulled out. Further, when the handle 7 is not pulled up, the grip portion 71 of the handle 7 has a recessed fitting portion 61 in which the upper surface of the central portion of the upper lid 6 is recessed.
The upper lid 6 does not protrude from the upper surface of the central portion of the upper lid 6.

Further, a convex portion 81 to be inserted into the concave fitting portion 61 of the upper lid 6 is provided at the central portion so as to form an outer peripheral portion 82 into which the upper surface 64 of the upper lid 6 is fitted from the base end of the convex portion 81 to the outer periphery. A male mold 8 is provided.

Then, the upper end 12 is expanded outwardly, the pipe 11 which is the enlarged portion 4 is inserted into the female die 5 for winding the upper lid and the upper lid 6 fitted in the male die 8 for winding is inserted into the female die 5. It is pressed against the mold 5 by a press machine, and the tip of the upper lid side plate 62 is attached to the R part 5
Fold inward at 5.

Then, the upper lid side plate 62 bent downward around the periphery is wound around the outer surface of the enlarged portion 4 and attached to the outer surface of the enlarged portion 4 at the upper end 12 of the car stop fence 1. That is, the upper lid side plate 62 of the upper lid 6 is wound around the outer surface of the enlarged portion 4.

Next, a hole 91 for inserting the pipe 11 is provided, a taper portion 92 equal to the taper portions 22 and 32 is provided outside the upper end of the hole 91, and the taper portion 2 is provided at the tip of the taper portion 92.
The female mold 9 for winding is provided with a reverse tapered portion 93 equal to 3, 33.

On the female mold 9 for winding, the upper lid side plate 6 of the upper lid 6 is attached.
Insert the pipe 11 in which 2 is wound on the outer surface of the enlarged portion 4, press the upper surface of the upper lid 6 with the male mold 8 for winding around the upper lid, and attach it to the outer surface of the enlarged portion 4 of the upper end 12 of the car stop fence 1. Then, the upper lid side plate 62 is wound and fixed.

Further, reference numeral 10 shown in FIGS. 1 and 2 denotes a rubber edge fitted into the outer peripheral surface of the upper lid 6 for storing the car stop fence post 1 in the insertion hole when the car stop fence post 1 is provided on the road surface. A buffer is provided between the upper lid 6 and the insertion hole to prevent the upper lid 6 of the car stop fence 1 from being damaged.

[0022]

The upper lid 6 of the car stop fence 1 of the present invention can be caulked to the outer surface of the enlarged portion 4 at the upper end 12 of the pipe 11 of the car stop fence 1 by pressing.

Further, since no welding is performed, there is no need for a post-treatment such as a welding machine and polishing, and it is possible to manufacture only with an inexpensive die, which enables cost reduction.

[Brief description of the drawings]

FIG. 1 is a side view of a main part of a car stop fence with a handle pulled out.

FIG. 2 is a plan view of a car stop fence post.

FIG. 3 is a sectional view of a main part taken along line AA of FIG. 2;

FIG. 4 shows a procedure of attaching the upper lid to the upper end of the car stop fence of the upper lid by pressing, and is a central longitudinal sectional view of a main part when the upper end of the pipe is processed.

FIG. 5 shows a procedure of attaching the upper lid to the upper end portion of the car stop fence of the upper lid by pressing, and is a central longitudinal cross-sectional view of a main part immediately before the upper lid is pushed into the processed portion at the upper end of the pipe.

FIG. 6 shows a procedure for mounting the upper lid by pressing on the upper end of the car stop fence pillar of the upper lid, showing a central longitudinal cross-sectional view of a main part immediately before winding the upper cover wrapped around the upper end of the pipe. Is.

[Explanation of symbols]

 1 Car stop fence post 1 11 Stainless steel pipe 12 Upper end 2 Female part 21 for pipe processing 21 Hole 22 Tapered part 23 Reversed taper part 3 Male part for pipe processing 31 Convex part 32 Tapered part 33 Reversed taper part 4 Enlarged part 5 Female type for surrounding the upper lid 51 Hole 52 Large diameter part 53 Inner bottom surface 54 Outer wall 55 R part 6 Upper lid 61 Recessed fitting portion 62 Upper lid side plate 63 Insertion hole 7 U-shaped handle 71 Grip portion 72 Hanging portion 73 Connection rod 8 Male for winding 81 Convex portion 82 Outer peripheral portion 9 Female for tightening winding 91 Hole 92 Tapered portion 93 Tapered portion

Claims (1)

[Claims] 1. A fence in which an upper end of a car stop fence pillar is expanded by pressing to form an enlarged portion, an upper lid of the car stop fence pillar is covered on the upper end of the fence pillar, and a bent upper lid side plate of the upper lid is expanded. A method of attaching an upper lid to a car stop fence pillar, which is attached to the outer circumference of the enlarged upper end of the pillar, and the folded upper lid side plate is wound around the outer surface of the enlarged upper end of the fence pillar by press working.