JPS62151612A - Member connecting structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a member fastening structure that transmits a load between a plurality of strength members, and particularly relates to a member fastening structure that transmits loads between a plurality of strength members, and particularly relates to a structure in which the strength members (e) are fastened by overlapping each other. The present invention relates to a suitable member fastening structure.

[Background of the invention]

In the conventional fastening structure, as shown in FIGS. 7 and 8, each root member 1 to 3 to be fastened is placed together, and a bolt 4 passing through the plate members 1 to 3 is screwed into the bolt 4. The conclusion was concluded by Natsuto. (Tokuko 1977
-15568 Publication) In this way, the strength members are fastened using the bolts 4 that pass through the members. At this time, the stress generated in the members due to the load transmitted by the bolts 4 is as shown in figure fi9. Near bolt holes: Stress concentration occurs here. Therefore, since its strength is determined by the maximum stress σ3 due to the stress concentration, it is necessary to increase the thickness of each strength member 1 to 3, which may result in increased weight or cost. .

[Purpose of the invention]

An object of the present invention is to provide a member fastening structure that prevents stress concentration in a plurality of member fastening structures and achieves uniform stress distribution.

[Summary of the invention]

Kimiakiaki fastens the fastening members by surface contact, 161
There is a patent which is characterized in that the fastening is performed after processing to produce a notch effect in the fastening member.

[Embodiments of the invention]

Hereinafter, one embodiment and other embodiments of the fastening structure according to the present invention will be described with reference to FIGS. 1 to 6. 1 to 4 show an embodiment according to the present invention. In the same figure, 2a is a strong L'l rsiI material on one side of the fastening gap;
7, 8, 9.10f, tfi connection, the other 0)) is a strength member. The strength members 7, 8.9 are the strength members 2a listed on the first side.
It is formed so as to surround the opening and closing part with a predetermined interval between the opening and closing part. 6 is the NU strength member 2a and the strength members 7.8, 9.
A pressure bonding pad made of resin or the like having elasticity is provided in the gap between the reinforcing member 2a and the strength member 2a, and is arranged on two opposing sides of the strength member 2a, and is not arranged adjacently on the two adjacent sides. 4a is a bolt for fixing each of the strength members 7, 8, 9, and 10, and 5a is a nut that is screwed into the bolt 4a.20 is a bolt 4a and a nut that are tightening members. 5a said strength members 7, 8.9.t.

Adjacent parts are fixed to each other, and the reinforcing member 2a is bonded to the strength member 2a through a pressure bonding pad.

According to such a configuration, when transmitting a load between the strength member 2a and the strength members 7, 8, 9.10, the load is transmitted throughout the strength member 2a, so the stress distribution state is As shown in FIG. 4, it acts almost uniformly on the cross section. Furthermore, in this stress distribution state, the maximum stress σ3 occurs almost throughout the entire structure, so that a large load can be transmitted as a whole. Further, since the coefficient of friction between the strength member 2a, strength member 7°8.9.10 and the pressure bonding pad 6 is larger than that between the strength members, there is no problem with load transmission.

According to such a configuration, the stress acting on the strength member 2a during load transmission can be made almost uniform, so that a large load can be transmitted, and when transmitting the same load, the strength member 23 etc. can be made thin and have a large eaves. Further, according to the above-mentioned configuration, since no through holes etc. are provided in the strength member 2a, there is no part corresponding to the notch (there is no stress concentration due to straining, and furthermore, the strength is improved. It is something that

Next, FIGS. 5 and 6 show another embodiment according to the present invention. In the same figure, the same reference numerals as those in the bait example embodiment indicate the same members. This embodiment differs from the embodiment described in IW in that the strength members 1 and 12 are of a two-part type corresponding to the outer shape of the strength member 2a.

According to the second configuration, it has the same effect as the first embodiment, and the strength members 11 and 12 are connected to the strength member 2a. ν matching is possible, and the number of parts can be reduced.

Further, even if the bolts 4a and the bolts 5a1 are stuck, the number of bolts 4a and 5a1 can be reduced.

〔Effect of the invention〕

As explained above, according to the present invention, the strength of >tl number
: In the member fastening structure that fastens members, the stress distribution can be made uniform, the strength is improved, and the -
Solidification and eaves formation are expected.

Lit theory 1j (Fig. 1 is a part by Akira Ki'iζ
! Figure 2 is A of Figure 1 below.
A section view, Figure 3 is a sectional view of section B-B in Figure 2, 15
4 is a stress distribution diagram of the strength member 2a in FIG. 1, and FIG.
The drawings are a side view showing another embodiment of the member fastening structure according to the present invention, FIG. 6 is a sectional view taken along the line C-C in FIG. 5, and FIG. Figure 8 is D- in Figure 7.
The sectional view of section D and FIG. 9 are stress distribution diagrams of the strength member 2 in FIG. 7.

2,+, ? , 8. 'l, 10...Strength member, 4a...Example/Reduction Figure 3 Figure 4 A Figure 6

Claims (1)

[Claims] 1. One strength member that transmits a load, the other strength member that transmits a load that corresponds to the outer shape of the strength member through a gap and surrounds the outer periphery, and an elastic member that is arranged in the gap between each of the strength members. 1. A member fastening structure comprising: a pressure bonding pad having a pressure bonding pad; and a tightening member that tightens one strength member via the pressure bonding pad by the other strength member.