JPS603934A - Pin - Google Patents

Abstract

PURPOSE:To connect easily and safely members by using a pin which is less larger in diameter than the hole of the members while the crystal structure is of a martensite phase and grows larger in diameter than the hole when the crystal structure is converted to an austenite phase by heating. CONSTITUTION:A pin is manufactured of a thermoelastic type martensite alloy with the intention of inserting the same into a hole in such a way that the pin is equal to or smaller in diameter than the hole of the member to be inserted while the crystal structure thereof is of a martensite phase and grows larger in diameter than the hole to be inserted when the crystal structure is converted to an austenite phase by heating. Such pin is inserted into the holes of members and is heated, by which the members are connected to each other. The pin can be taken out of the holes to disconnect the members if the crystal structure is subjected to the phase transition by cooling the pin inserted into the holes.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to the application of bolts to pins, and more particularly to insertion into holes.
Open 1 to the missed pin. .

excellence of advanced skill Conventionally, for example, you can connect one member to another! .

The methods used include bolting, welding, brazing, and using adhesive. However, each of these connection methods has drawbacks as described below. In other words, when attempting to tighten bolts (for example, it is necessary to thread the hole that receives the bolt, which is troublesome. Also, depending on the material used, the threading process may be difficult). There are some things that are impossible to do.

Furthermore, if connections are made by welding, brazing, etc., a dedicated IR specialist is required, which is disadvantageous in terms of cost. Furthermore, since high heat is applied to the T4 material during connection work, it is not possible to use a material that would cause bad performance due to high heat. Furthermore, not only is the connection work troublesome, but it also brings disadvantages such as making the operator's eyes flash. In addition, there is also the disadvantage that if a leakage connection is made by welding or brazing, the connection cannot be easily released.

Connection methods using adhesives have the disadvantage that, for example, the materials that can be used are limited, and that once they have been bonded, the bond cannot be easily released.

Purpose of the Invention Therefore, the present invention was made in order to eliminate the above-mentioned drawbacks, and its main purpose is, for example, when connecting two members, without being limited to a specific material. Connections can be made easily and safely,
Furthermore, it is possible to realize and remove the connection if necessary.

Structure and Effects of the Invention The bottle according to the invention is made from a thermoelastic martensitic base and is intended to be inserted into a hole. Therefore, when the crystal structure is martensite 1 to phase, its diameter is the same as or smaller than the diameter of the hole to be inserted, and when the crystal structure becomes austenite phase by heating, the diameter is It is made larger than the diameter of the hole into which it is to be inserted.

Therefore, for example, if it is intended to connect the 1st member and the 2nd member, holes for receiving the above-mentioned bottles are formed at corresponding positions in the 18th and 2nd members, respectively. Then, a bottle having a martensite crystal structure is inserted into the hole, and then the bottle is heated, for example, by a dryer. In response to this heating, when the crystalline structure of the bottle exceeds the Is degree of the thermally active martensitic alloy, its crystal structure undergoes a phase transition from the martensite phase to the A-stenite phase. The bottle is mMltP
j M t 2 y t () Ql(7) J: e
E L"11" Since it is made to be larger than the diameter of 1 hole, the bottle and hole and 1. T, ,? ffi, the first member and the member w12 will be connected by this mutual pressing force. As a result of this invention, +-, 1:, the connection between the VC and VC has become very convenient, and it is also much simpler (in order to realize the connection). death/
j gatsu[1,''su! -So, 6 and 6 go, ta, f'rl! Since it is not necessary to perform θ work to eliminate any negative effects on the Ff right side, this is advantageous in terms of work safety.

In addition, in order to realize the connection between a certain ζ member and a certain ζ21 member as in the past, processing such as thread cutting is required (°), and furthermore, 1J
Since heat i 4 and 5 are tK, can we apply this invention to 2 materials with and Δ? , Moko(- is possible.

15. According to the present invention, the connection can be released by using the pin.

In other words, if a bottle fixed in a hole is cooled and the crystal structure undergoes a phase transition to martensitic phase,
The bottle becomes soft so that it can be removed from the hole. If the bottle is removed from the hole in this state, the connection is broken. In order to facilitate the removal of the bottle from the hole, it is preferable that a protrusion is formed on the bottle by heading processing, and this protrusion is used as a knob during the removal operation.

The bottle according to the invention can also be easily manufactured by, for example, cold drawing a wire having a diameter larger than the diameter of the hole into which it is to be inserted until it has a diameter equal to or smaller than the diameter of the hole. can be obtained.

The thermoelastic martensite I-alloy used as the material for the bottle according to the present invention is preferably used at its wake*
The thirst level is above room temperature and below 80°C. This is because if the wake aSS is below room wA (20℃),
This is because the diameter (am) becomes smaller, and therefore it is difficult to obtain a fixing force between the bottle and the hole unless the dimensions of the bottle or hole are made accurate.

Alternatively, C occurs because the crystal structure of the bottle has already undergone a phase transition to the austenite phase before the bottle is heated using, for example, a dryer. Also, if the reverse transformation temperature exceeds 80°C, even if the temperature of the bottle is transferred to A-Sudepui-IJ due to the heat, if you remove the heating and place it under the room temperature. There is C because the IeIl^1 constant force required for connection becomes weaker.

1 example 1. Referring to Figure 1, intermediate annealing N155 double voice 96,
Direct a consisting of the remainder 1-1! 3.4mm wire rod 1 (wake F
I! ! (Dirty degree: 60℃), using two dies 2 and 3 with wetness below 60'C, the diameter d is 3IllIll
Naka1'a7JI+ was constructed so that The wire-drawn cotton material 1 is shown in FIG. 2 (a>), and as shown in (1)),
A bottle 1a was prepared by cutting the material 1 so that the length was 10rR1!l.The bottle 1 shown in Fig. 2(b)
When a was heated for 8 o'clock with a dryer, the length of J: 3.111L was 9.41111W as shown in FIG. 2(c). If we show this with a symbol, [)
>d, L<, e.

Referring to Fig. 1g3 (+1 >), a 5isN plate 4 with a thickness of 5I!1lll and a plus deck plate 5 with a thickness of 51!llT were prepared.Both plates 4 and 5 were placed in their corresponding positions. Insert the bottle 1a in the state shown in Fig. 2(b) into this hole 6.Insert the bottle 1a in the state shown in Fig. 3(b)). When heated by a dryer (Fig. 3 (C)), the bottle 1a
The diameter of the hole 6 was increased, and the bottle 1a was fixed in the hole 6. When several combinations of this bottle 1a and hole 6 were provided, S
t s N4 [and the plastic plate 5 were firmly connected.

Example 2: Qu-23,0%7n-5,4 with a reverse transformation temperature of 30°C
% Au alloy wire was thermally extruded and quenched from 700°C. After that, this was added in a cold oven to a diameter of 51IIIl.
It was made into a wire rod. This camphor tree was cut to a length of 20!1 lll to make a bottle 1b, and then, as shown in Fig. 4, a protrusion 7 was formed near one end surface by heading processing.
was formed.

Referring to FIG. 5, W! Holes 10 with a diameter of 51111P are formed in the corresponding positions of 8 and gold Fl plate 9, respectively [1
Oita. Then, the bottle 1 shown in FIG. 4 is inserted into this hole 10.
When the bottle 1b was inserted as shown in Figure M5 and the bottle 1b was heated by the dryer, the number 1b no longer came out of the hole 10. It was firmly fixed at !8.

Next, hold the protrusion 7 of the bottle Ib with pliers and
When pulled in one direction, the bottle 1b could be pulled out of the hole 10. In this way, the connection between the gold steam plate 9 and the wall 8 could be released.

Also, when it was only 1 full fl liter to pull out the bottle 1b from the hole 1o, when I cooled the bottle 1b (from the protruding part 7) using ice, I was able to pull it out easily.

[Brief explanation of drawings]

Figures 1 to 3 show the cabinet used in Example 1. Fig. 2(a) shows the wire rod processed into 1ItI wire. Fig. 1 and Fig. 2(b) show the state in which this N material is cut to a predetermined length. Figure 2 (0) is a diagram showing a practical example of a heated bottle. Figure 2 (0) is a diagram showing the state when the bottle is heated.
, (b) 13 Yohi (C) LJ, 1% 2 This is a diagram showing the sequential state of connecting 12 attacks (4) using the bins shown in Figure 4 and (b). The fifth factor is Example 2
FIG. 4 is a diagram used to explain another embodiment of the bottle according to the present invention, and FIG. It is 10. Inside l13, 1 is wire, 'l a and 1b are bi;
, 6 is a hole, 7 is a protrusion, 10 is a hole 7r, (. Patent ¥1 Applicant: Sumitomo Iki Industries Co., Ltd. Agent Patent attorney: Ri Kaji, Kube (and 2 others)

Claims (4)

[Claims] (1) J! I? It is a pin made from a 1-type martensite alloy and designed to be pushed into a hole. . A pin whose diameter becomes larger than the size of the hole when the crystal structure changes to an austainer-it-phase by heating. (2) The pin according to claim 1 TR, wherein the pin is obtained by cold stretching a shaft member having a diameter larger than the diameter of the hole. (3) The pin is made by heading process 1 and has an IC protrusion, or *I2
Pin described in rR. (4) The reverse transformation of the thermoelastic martenite alloy is above room temperature and below 80°C! 1l
Ik! in any of lW11th to 311th terms. Eave pin.