JPS6040623A - Fixing method of metallic pipe - Google Patents

Abstract

PURPOSE:To form two bulge parts of a hole on the upper part of a member to be fixed, too, and to fix a metallic pipe to the member to be fixed by both the bulge parts, by inserting the metallic pipe on which the first bulge part is formed, into a hole of the member to be fixed, making a die contact by pressing to the lower face of the bulge part, inserting a punch into the metallic pipe, and pressing it strongly. CONSTITUTION:A metallic pipe 1 on which the first bulge part 3 is formed near the end part is inserted into a through-port 7 of a member 2 to be fixed so that the bulge part 3 contacts by pressing to the flower face. Subsequently, a die 8 is fixed so as to contact by pressing to the lower face of the first bulge part 3. Next, a fitting-in part 11 of a punch provided with the fitting-in part 11 going into the metallic pipe 1 and a recessed groove 12 for forming the second bulge part is fitted into the metallic pipe 1, pressed strongly, the end part of the metallic pipe 1 is bent in the recessed groove 12, and the second bulge part 10 is formed. The metallic pipe 1 is fixed to the member 2 to be fixed by these first and second bulge parts 3, 10. Since welding is not used, as for the member 2 to be fixed, a material by a synthetic resin, etc. except a metal is also available.

Description

DETAILED DESCRIPTION OF THE INVENTION This pronunciation ψ relates to the lj method that makes the remaining 9 na ・ hard to the part of the song.

Conventionally, methods for fixing a metal tube to a member such as a substrate include a method using a welding agent and a method using welding.
：What is there?

However, the adhesive method has a weak adhesive strength, and the adhesive has a weak 1liiJ heat 1) 1mm; There was a problem in that it was unsuitable for fixing the portion 4J used in the l1ij state.

In addition, in the welding method, the fixed part 4A to the metal bone
There is an old clause 11 that states that the material of 4i4 must be metal, and that it cannot be applied when the corrugated part A9 is made of synthetic resin or the like.

Therefore, this invention is a source of adhesive strength! t <, and it is fixed to all materials regardless of the material of the member to be fixed. f
To provide an efficient method for fixing metal pipes. purpose.

In order to achieve the above object, the present invention forms a through hole in a member to be fixed, inserts a metal tube into the through hole, and forms a bulging deformation part in the metal tube with +l'I- inserted into the through hole. '' is formed on both sides of the second corrugated part h part a, and the bulging deformed part is pressed to the periphery of the through hole of the corrugated part i and rli material.

As described above, the fixing method of the present invention allows the fixing method to be applied to the bulging deformed portion formed in the metal tube. Since it is fixed by sandwiching the 'i1 attachment part 44, the adhesion strength between the 'i1 t' and the member to be fixed is strong, and the
Regardless of the material of J, 111 made of metal or synthetic resin;
It has the effect of being able to hold the shrine (hard) I4.

Below, the embodiment of this invention is shown on i-+, 1λ1 plane with i,
・(Al1 will be revealed next.

＞I's Figures 1 and 2 show that metal and
Focus on waves on i'r 1, 1. The metal plate 2, which is January 9th, was attached at the same time.

First, (as shown in Figure 13, a first
1i September 11 Form the deformed part 3. The means for forming the first bulging deformation, il + 3, on the defunct tube 1 is 1: [As shown in Figures 33 and 4, +r of metal '1ffi' 1
r:+s The circumference 1nf is fixed to the toe mold 4, and the gold fixed to the upper mold 4 is 11.J≦.i'i' 1? '1
Formation of bulging deformed part 3 on surface 4, 1; identified as 2-type 5, leaving medium-sized 6 inside metal 'iji' 1, while 17 people ,J-Note 1-Mold 5 and C mold 4 are brought into pressure contact.
) i, J +6j -・IWB

Next, 1' [jllJ, hole 7 of the gold nottle tube 1 is attached to the metal plate 2.
can be formed. Thereafter, the upper mold 9 is used to press the metal tube 1 onto the periphery of the through hole 7 of the metal plate 2 . "-" On the lower surface of the second mold 9, there is a fitting part 11 that fits into the inner hole of the metal tube 1, and a groove 12 for forming the second bulging deformation part 10 on the outer periphery of the first end of the fitting part 11. It is formed.

As above, attach the metal plate 2 to the bone 1 and the circumference j1f.
can do.

Incidentally, in "Embodiment 1" 3, a circular metal frame 1 was used, but the metal tube 1 may have a rectangular cylindrical shape.
Of course, it is also possible to use a Taber tube whose diameter gradually increases in the axial direction.

[Brief explanation of the drawing]

ε('S Figure 1 is a perspective view 1 showing an example of implementing this invention.
Nu1, Figure 2 is the same partially cut-out IIV? i/ijI
'll, ε153 diagram is metal 't5t'i'i'! 1
742. What are the cross-sectional views of the shape 3 rivers with the bulging deformations i and l (formed)? 742 It is an explanatory view showing a means for forming a bulging deformation part. 1... Metal tube, 2... Limb fixation part 44.3.10...
・Bulging deformation part, 7...I'I-through hole 9.1' allowance 1□, knee'' 1 person Tomoe Kin LSC Kogyo Co., Ltd. Same agent Sickle 114 Sentence 2

Claims (1)

[Claims] Form the bottom of the li' jii hole τ in the first skin area L'1
A metal tube is inserted into the through hole, and bulging deformed portions are formed in the metal tube inserted into the through hole on both sides of the corrugated member 111, and the bulging deformed portions are formed on the periphery of the through hole of the fixed portion 4iJ. A method for fixing metal tubes in which the sign is 'I', :I', where the pressure is 'fl!'.