JPH0817733B2 - Metal parts for clothes hangers - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to metal parts such as hooks and springs for clips in clothes hangers.

[0002]

2. Description of the Related Art Conventionally, the main body of clothing hangers, clips, and the like have been mainly made of synthetic resin, but hooks and springs for clips are still made of metal.

By the way, when sewing clothes with a sewing machine, the sewing needle may be broken, but if the sewing needle remains in the clothes, it may be pierced by the wearer's body. There is a risk of causing a serious accident that threatens human life. The same applies when the gusset needle remains on the clothing.

For this reason, in recent years, there have been provided magnetic induction type and electromagnetic induction type needle detectors, and it is necessary to pass the clothes through the needle detectors before shipping to make sure that a small piece of metal such as a sewing machine folding needle or a gusset needle is not forgotten. , We have a preliminary check.

Such a meter reading is generally performed in two steps. In other words, the first needle inspection is performed after attaching relatively small accessories such as fasteners, front rings, snaps, etc. attached to the sewing machine in the sewing process, and then examining whether the sewing machine needle remains. (For convenience, referred to as high-sensitivity meter reading). In the second meter reading, after attaching a relatively large accessory such as a metal button, it is checked whether the user has forgotten to remove the needle (for convenience, referred to as a low-sensitivity meter reading).

[0006] For example, according to a conveyor type meter detector provided by Sankou Electronic Research Institute Co., Ltd. (1677, Kusue, Takatsu-ku, Kawasaki City), the sensitivity level (detection ability)
Is provided with A sensitivity for the high sensitivity meter reading and B sensitivity for the low sensitivity meter reading.

In order to detect a sewing machine broken needle, the A sensitivity has a detection ability equivalent to an iron ball equivalent of 1.2 mmφ. Therefore, in order for the fasteners, front rings, snaps, etc. attached to the clothes to be probed with the A sensitivity, to have the A sensitivity cleared, the iron ball equivalent must be 1.1 mmφ or less.

In order to detect the town needle, the B sensitivity is
It has a detection capability equivalent to that of a 2.5 mmφ iron ball. Therefore,
In order to clear the B sensitivity, the metal buttons attached to the clothes that are to be probed with the B sensitivity must have an iron ball equivalent of 2.4 mmφ or less.

[0009]

In recent years, when a garment after sewing is folded and stored in a packed state, it not only causes wrinkles, but also requires a labor for unpacking at a retail store or the like and hanging it on the hanger from the beginning. It is stored in a suspended state. Even when shipping from a garment factory, many hangers covered with clothes are hung and stored in a container and transported in this state.

By the way, recently, the transfer using such a hanger has been thoroughly carried out, and in a sewing factory,
The garment being sewn is fitted with the relatively small clothing accessory as described above, and then a high-sensitivity meter reading with A sensitivity is performed to search for the presence or absence of a broken needle. After the sewing is completed by mounting a relatively large accessory such as clothes, it is desired to hang the clothes on a hanger. Therefore, in order to meet this demand, the clothes are hung on the hanger and transferred to the needle detector by the conveyor, and the clothes and the hanger are allowed to pass through the needle detector without being separated. A low-sensitivity meter reading due to the B sensitivity will be received.

However, in the conventional hanger, the hanger body is made of synthetic resin or wood, but has metal parts such as springs for hooks and clips. In each case, an abnormal signal is emitted from the meter reading device, which poses a problem of making the desired meter reading work impossible. That is, these metal parts greatly exceed the iron ball equivalent of 3.0 mmφ, and even if the mass is reduced by thinning or thinning, the iron ball equivalent of 2.5 mmφ detected with the B sensitivity of the low sensitivity meter. Cannot be less than

In this respect, there are clothes hangers in which the entire hanger including hooks and springs for clips are molded of synthetic resin. However, the hooks cannot withstand the load of the clothes hung on the hangers and are broken. However, there are many problems such as the elasticity of the spring is not sufficient and the clip does not function and the clothes fall off.

On the other hand, for example, it is conceivable to clear the needle detector by making the hook of the hanger made of aluminum, but there is still a problem that it cannot withstand relatively heavy load clothes. In particular, aluminum is relatively easily plastically deformed, so that the hook has a weak point of being easily bent. Needless to say, the clip spring cannot be formed of aluminum because it lacks elastic restoring force.

[0014]

SUMMARY OF THE INVENTION The present inventors have proposed a conventional hanger in which the hanger body is made of synthetic resin or wood, while the hook and clip springs are made of metal having toughness. It has been found that it should be formed of austenitic stainless steel in order to make it nonmagnetic with an iron ball equivalent of 1.5 mmφ or less that can clear the above B sensitivity. This is because austenitic stainless steel is generally considered to be non-magnetic.

However, when a hook and clip spring made of austenitic stainless steel available on the market was prototyped and passed through the needle detector, it was found that the B sensitivity of the current needle detector cannot be cleared.

That is, among the austenitic stainless steels available on the market, the wire diameter of about 3.
When a hook having a length of 8 mm, a total length of about 15.5 mm and a weight of about 13 g was prototyped and tested, it was found to be 3.0 mmφ in terms of an iron ball, and the B sensitivity could not be cleared at all.

This means that austenitic stainless steel is generally considered to be non-magnetic, but in terms of sensitivity at a severe level like a needle detector, it is presumed that the reaction has a slight magnetism. . Alternatively, even if it is non-magnetic, it is theoretically known that it is magnetic depending on its chemical composition and cold working rate, and in the case of a hanger hook, cold working is required, It is speculated that a part of the austenite was transformed into martensite and was magnetized, resulting in the above results.

The metal parts of the clothes hanger according to the present invention are excellent in toughness and do not require plating treatment. Therefore, even though they are formed of stainless steel, they are particularly non-magnetic in order to solve the above problems. It is characterized by the fact that it is made of austenitic stainless steel that has been converted to austenite.

The metal component of the clothes hanger according to the present invention preferably has a chemical composition of at least N of 0.1.
It is characterized in that it is formed of austenitic stainless steel containing at least 100%.

Further, the metal part of the clothes hanger according to the present invention is preferably characterized in that it is made of austenitic stainless steel which is particularly non-magnetized and contains Cu.

In the best mode of the present invention, the hook adopted as the metal part has a chemical composition of C.
01 to 0.05%, Si 1.0% or less, Mn 3.0 to 7.0%, Ni 5.0 to 6.0%,
Cr is 17.0 to 19.0%, Cu is 1.0 to 4.0%, Nb is 0.2% or less, and N is 0.1 to 0.
It is formed of 3% austenitic stainless steel.

In another best mode of the present invention, the clip spring used as the metal part has a chemical composition of 0.07 to 0.10% C, and 1.
0% or less, Mn of 9.0 to 10.0%, and Ni of 5.
0 to 6.0%, Cr 17.5 to 18.5%,
It is made of austenitic stainless steel with N of 0.25 to 0.35%.

[0023]

Embodiments of the present invention will be described in detail below with reference to the drawings.

As shown in FIG. 1A, the hanger body 1
Is made of synthetic resin or wood and has a hook 2 for hanging. If necessary, the hanger body 1 is provided with a suspension bar 3 made of synthetic resin, and clips 4 and 4 made of synthetic resin are attached to the suspension bar 3, and a spring is attached to the clip 4. 5 is installed. The spring 5
Shows a leaf spring in the case of the example, but a coil spring may be used. The mechanical structure of such a hanger is similar to that of a conventionally known hanger, and only the hook 2 and the clip springs 5 and 5 are made of metal to form a metal part of the hanger.

As shown in FIG. 1 (B), the hook 2 has an upright portion 7 having a nodular groove 6 which is inserted into the hanger body 1.
The bent hook portion 8 is extended to form a bulging ball portion 9 at the free end of the hook portion 8 by cold working a round wire of austenitic stainless steel as described below. It is manufactured.

As described above, austenitic stainless steel is generally considered to be non-magnetic, but SUS
304, SUS305, SUS310, SUS316,
In addition, in the case where the hook 2 is trial-produced by a commercially available one, since it is 3.0 mmφ or more in terms of an iron ball that cannot completely clear the B sensitivity of the needle detector, the austenitic type is required to achieve the object of the present invention. Among stainless steels, particularly non-magnetized stainless steel is used.

In particular, in the metal parts of the hanger formed by cold working such as the hook 2 and the clip spring 5, the austenitic stainless steel has a chemical composition of at least 0.1% N. Use what is contained.

According to the knowledge of the inventors of the present invention, normally, the structure of austenitic stainless steel at room temperature is an austenite phase, but when cold working, a part or most of austenite is transformed into martensite and magnetized. Will take on. However, when N, which is considered to be an austenite-forming element, is included, the tendency to transform into martensite becomes weak, and the magnetic properties of the metal parts of the hanger intended for the hook 2 and the clip spring 5, as in the present invention, are detected by a needle detector. In order to demagnetize to a value lower than the B sensitivity (2.5 mmφ in terms of iron ball) of No. 1, good results were obtained by adding N in an amount of 0.1% or more.

Further, in order to facilitate the cold working of a metal part such as the hook 2, the above-mentioned particularly non-magnetized austenitic stainless steel containing Cu as a chemical component is used. It is better to include it. According to the findings of the present inventors, the inclusion of Cu facilitates plastic deformation during cold working. Moreover, Cu is considered to form an austenite-forming element, similar to N, and contributes to weakening the transformation tendency to martensite by cold working, and has an effect of two birds with one stone.

Next, an embodiment considered as the best mode of the present invention will be introduced.

Example 1 A hook 2 having the shape shown in FIG. 1B and having the following specifications was manufactured by cold working a round wire of austenitic stainless steel having the following chemical composition. . The chemical composition of steel is 0.04 C
%, Si 0.40%, Mn 5.15%, P 0.0
30%, S 0.000%, Ni 5.55%, Cr 18.21%, Cu 2.47%, Nb 0.09%,
N is 0.193%. The hook has a wire diameter of 3.8 mm,
The total length is about 15.5 mm and the weight is about 13 g.

The hook of Example 1 is a test center of Japan Spinning Inspection Association (18-18 Kamimachi, Chuo-ku, Osaka City)
No. 15) was subjected to the functional test of the meter, and it was confirmed as equivalent to 1.2 mmφ in terms of iron ball. Therefore, the B sensitivity of the needle detector (manufactured by Sankou Denshi Kenkyusho Co., Ltd.) could be cleared without any problem.

By the way, in the needle detector function test, the chemical components are 0.01 to 0.05% of C and 1.
0% or less, Mn is 3.0 to 7.0%, and Ni is 5.0
To 6.0%, Cr is 17.0 to 19.0%, C
Several prototypes of hooks having different u in the range of 1.0 to 4.0%, Nb in the range of 0.2% or less, and N in the range of 0.1 to 0.3% were provided for the tests. It was certified as 1.3mmφ or less in terms of iron ball.

Regarding the constitution of chemical components, conventional SU
S304, SUS305, SUS310, SUS316
Etc. all make Mn 2.00% or less,
In the above embodiment, Mn is set to 3.0% or more,
Forms an austenite-forming element and contributes to weakening the tendency to transform into martensite by cold working.

Example 2 By cold working a flat wire of austenitic stainless steel having the following chemical composition, a leaf spring having a shape as shown in FIG. 1C and having the following specifications was obtained. The clip spring 5 was manufactured. The chemical composition of steel is 0.07% C, 0.53% Si,
Mn 9.85%, P 0.020%, S 0.000
%, Ni is 5.62%, Cr is 18.08%, N is 0.
298%. The spring has a plate thickness of about 0.9 mm, a width of about 8.0 mm, a total length of about 27.0 mm, and a weight of about 2.5 g.

As a result of subjecting the two springs as a set to the needle detector functional test of the above-mentioned Japan Spinning Inspection Association Testing Center, it was recognized as equivalent to 1.1 mmφ in terms of iron ball. Therefore, the B sensitivity of the needle detector (manufactured by Sankou Denshi Kenkyusho Co., Ltd.) could be cleared without any problem.

By the way, in the needle detector function test, the chemical components are 0.07 to 0.10% for C and 1.
0% or less, Mn is 9.0 to 10.0%, and Ni is 5.
0 to 6.0%, Cr is 17.5 to 18.5%,
Several prototypes of leaf springs for clip springs with N changed in the range of 0.25 to 0.35% were made and subjected to tests. In each case, two were used as a set and converted into iron balls.
It was certified to be 1 mmφ or less.

Also in this example, as compared with the conventional SUS series, Mn was contained in a large amount of 9.0% or more,
It is recognized that Mn forms an austenite forming element and contributes to weakening the tendency to transform into martensite by cold working.

(Embodiment 3) A coil for a clip as shown in FIG. 1 (D) is obtained by cold working a round wire of austenitic stainless steel whose chemical composition is within the same range as in the above-mentioned Embodiment 2. The spring 5a was prototyped, and two springs as a set were subjected to the needle detector function test of the Japan Spinning Inspection Association Testing Center.
Certified as φ or less.

As shown in the above embodiment, as a result of the function test of the needle detector, the number of hooks 2 is 1.3 mmφ or less in terms of iron balls, and the number of springs 5 is 2 for both leaf springs and coil springs. It is 1.1 mmφ or less in terms of iron balls as a set.

For example, in the needle detector manufactured by Sankou Denshi Kenkyusho Co., Ltd., the B sensitivity is equivalent to an iron ball equivalent of 2.5 mmφ, and in order to search for the town needle, the metal parts of the hanger clear the B sensitivity. Is theoretically 2.4 mmφ or less in terms of iron ball, but 1.5 mmφ or less in terms of iron ball is desirable in order to ensure a reliable clearing.

In this regard, a hanger as shown in FIG. 1A, in which one hook and two springs are arranged separately, is a needle detector (manufactured by Sankou Denshi Kenkyusho Co., Ltd.).
Sensitivity to react when passing through the iron ball equivalent 1.4mmφ
It was the following, and in 10 out of 10 tests, the B sensitivity (2.5 mmφ in iron ball conversion) of the company's meter was cleared.

The above-mentioned non-magnetized austenitic stainless steel has a gloss comparable to that of conventional hard chrome plated products, has high corrosion resistance, and has sufficient rigidity as a hanger part. ing.

Since the above Example 1 contains Cu, the cold working of the hook 2 is easy, while the above Examples 2 and 3 are necessary and sufficient to strongly repel the clip 4. It has elasticity.

[0045]

According to the present invention as set forth in claim 1, when the hook 2 and the clip springs 5 and 5 are made of austenitic stainless steel which is conventionally available on the market, the B sensitivity of the meter cannot be cleared. On the other hand,
In particular, since non-magnetized austenitic stainless steel is used, this can be cleared. As a result, when clothes are sewn, a relatively large accessory such as a metal button is attached, and after the sewing is completed, the clothes are immediately hung on a hanger and hung and transferred to the needle detector by the conveyor in the suspended state. However, there is an effect that it is possible to perform low-sensitivity meter reading by the B sensitivity while allowing the clothing and the hanger to be integrated and passing through the meter reading device.

Further, the metal parts of the hook 2 and / or the clip springs 5, 5 have a gloss comparable to that of the conventional hard chrome plated product and have high corrosion resistance, so that plating is unnecessary. Sufficient rigidity as a hanger part.

According to the second aspect of the present invention, since the content of N is 0.1% or more, it is possible to prevent the metal parts from being magnetized during the cold working and to ensure the above effect.

According to the present invention as set forth in claim 3, in addition to the above effects, since Cu is contained, cold working of the metal part is easy, and at the same time, it is possible to prevent magnetization during the working. It has the effect of contributing.

According to the present invention described in claim 4, it is possible to provide the hook 2 which can best achieve the intended purpose.

According to the present invention described in claim 5, it is possible to provide the clip spring 5 which can best achieve the intended purpose.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, (A) is a perspective view of the entire hanger, (B) is a side view of a hook, and (C) is a leaf spring constituting one embodiment of a clip spring. FIG. 3D is a perspective view of a coil spring that constitutes another embodiment of the clip spring.

[Explanation of symbols]

 2 Hook 5 Clip spring (leaf spring) 5a Clip spring (coil spring)

Claims (5)

[Claims] 1. A metal part for a clothes hanger, which is an austenitic stainless steel, particularly made of non-magnetized stainless steel. 2. A metal part of a clothes hanger characterized in that it is made of austenitic stainless steel having a chemical composition of at least 0.1% N. 3. A metal part for a clothes hanger, which is made of austenitic stainless steel, in particular made of non-magnetized and Cu-containing stainless steel. 4. The metal hook of the clothes hanger is austenitic stainless steel, and the
C is 0.01 to 0.05%, Si is 1.0% or less,
Mn is 3.0 to 7.0% and Ni is 5.0 to 6.
0%, Cr 17.0 to 19.0%, Cu 1.0
To 4.0%, Nb 0.2% or less, N 0.1 to 0.3%, made of stainless steel, The metal of the clothes hanger according to claim 1, 2 or 3. parts. 5. A spring for a clip of a clothes hanger is an austenitic stainless steel, wherein C is 0.07 to 0.10% and Si is 1.0.
% Or less, Mn of 9.0 to 10.0%, Ni of 5.0
To 6.0%, Cr 17.5 to 18.5%, N
The metal part of the clothes hanger according to claim 1 or 2, characterized in that the metal part is made of stainless steel whose content is 0.25 to 0.35%.