WO2000042107A1 - Commutateur - Google Patents

Commutateur Download PDF

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Publication number
WO2000042107A1
WO2000042107A1 PCT/JP1999/000121 JP9900121W WO0042107A1 WO 2000042107 A1 WO2000042107 A1 WO 2000042107A1 JP 9900121 W JP9900121 W JP 9900121W WO 0042107 A1 WO0042107 A1 WO 0042107A1
Authority
WO
WIPO (PCT)
Prior art keywords
nylon
weight
magnesium hydroxide
molding
molded article
Prior art date
Application number
PCT/JP1999/000121
Other languages
English (en)
Japanese (ja)
Inventor
Shunichi Katsube
Kazunori Fukuya
Original Assignee
Mitsubishi Denki Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Denki Kabushiki Kaisha filed Critical Mitsubishi Denki Kabushiki Kaisha
Priority to CNB998040916A priority Critical patent/CN1158353C/zh
Priority to EP99900330A priority patent/EP1083203A1/fr
Priority to PCT/JP1999/000121 priority patent/WO2000042107A1/fr
Priority to KR1020007010269A priority patent/KR20010106098A/ko
Publication of WO2000042107A1 publication Critical patent/WO2000042107A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/18—Means for extinguishing or suppressing arc
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/025—Constructional details of housings or casings not concerning the mounting or assembly of the different internal parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/025—Constructional details of housings or casings not concerning the mounting or assembly of the different internal parts
    • H01H71/0257—Strength considerations

Definitions

  • the present invention relates to a switch part of which is constituted by a molded article of an insulating component. More specifically, the molded product has high rigidity and high strength, maintains insulation after switching off the switch, provides flame retardancy, has little distortion of the molded product, has good surface gloss, and has scratches. For things that are difficult to attach. Background art
  • Japanese Patent Application Laid-Open No. Hei 8-117487 discloses that 45% to 80% by weight of nylon 6, 15% to 50% by weight of magnesium hydroxide, and 5% to 40% by weight of glass fiber.
  • a switch using a molded article containing the composition by weight is described.
  • a switch using a molded article containing the above composition provides the required stiffness, strength, required creep, insulation after switching off the switch, flame retardancy, etc. The problem is that the production failure rate increases, and the rigidity of the obtained molded product decreases (however, the required rigidity is satisfied even after the decrease).
  • the molded product immediately after molding absorbs moisture in the atmosphere and changes its dimensions.
  • the rate of change of this dimensional change depends on the storage condition of the molded product, external factors such as season, etc. Different.
  • the molded product used for the molding is performed at a place separated from the molding of the molded product and the assembling of the switch, and is usually used for assembly several hours to several weeks after the molding to improve work efficiency. Therefore, if the external dimensions of the molded product change significantly within a short period of several hours to several weeks after molding, especially if it changes outside the allowable dimensions, the molded product can be used as a part for assembly. This will affect the production failure rate due to the switch assembly efficiency.
  • the present invention has been made in order to solve the above-mentioned problems, and has a specific ratio of nylon 6 or nylon 6-based alloy, a reinforcing material, and magnesium hydroxide contained in an organic-inorganic composite composition.
  • switches with high insulation after shut-off, small dimensional changes after molding, and a low production defect rate can be used.
  • the dimensional change after molding is small, the production failure rate is low, and the rigidity after molding is low.
  • An object of the present invention is to provide a switch in which a part of a molded article of an insulating component that is high and has excellent creep resistance is formed.
  • the present invention specifically specifies nylon 6 or nylon 6-based alloy contained in the organic-inorganic composite composition, a reinforcing material, magnesium hydroxide, and an inorganic material having an effect of suppressing the orientation of the reinforcing material.
  • Still another object of the present invention is to provide a switch part of which is formed by a molded article of an insulating component which has a good surface gloss and is not easily damaged. Disclosure of the invention
  • the switch according to the present invention comprises 35-50% by weight of nylon 6 or nylon 6 series alloy, 15-25% by weight of reinforcing material, and 30-40% by weight of water. Since a part of the molded product is composed of an organic-inorganic composite composition containing magnesium oxide, the insulating property after interruption is high, the dimensional change after molding is small, and the production failure rate is low.
  • Nylon 6 or Nylon 6 alloy is 45 to 50% by weight
  • reinforcing material is 20 to 25% by weight
  • magnesium hydroxide is 30 to 35% by weight.
  • Wide range of molding conditions such as molten resin temperature and mold temperature, enables easy molding and less precipitation of reinforcing material and magnesium hydroxide on the surface.
  • Nylon 6 or Nylon 6 alloy is 35 to 45% by weight
  • reinforcing material is 15 to 25% by weight
  • magnesium hydroxide is 30 to 40% by weight. The dimensional change after molding is smaller and the production defect rate is lower.
  • Nylon 6 or Nylon 6 alloy is 35 to 40% by weight
  • reinforcing material is 15 to 25% by weight
  • magnesium hydroxide is 30 to 40% by weight. Very small dimensional change after molding and low production failure rate.
  • the molded product is a housing, it is one of the largest components of the circuit breaker, and contributes effectively to the reduction of the defective production rate. Also, 35 to 45% by weight of nylon 6 or a nylon 6 series alloy, 15 to 25% by weight of a reinforcing material, 30 to 40% by weight of magnesium hydroxide, and 5 to 15% A part of the product is composed of a molded product of an organic-inorganic composite composition containing an inorganic material having a low orientation by weight, so that the insulation is high after interruption and the dimensional change after molding is small. Low defect rate.
  • the inorganic substance is calcined clay and / or wollastonite, the molded article is hardly damaged.
  • the molded product is a housing, it is the largest component of the circuit breaker components. It is one of the most important components and contributes effectively to the reduction of the production failure rate. Furthermore, since the molded article is the base of the housing, the surface gloss and the surface are not easily scratched, and thus are preferable.
  • FIG. 1 is a perspective view showing a base of a case of a circuit breaker according to one embodiment of the present invention.
  • FIG. 2 is a perspective view showing a cover of a circuit breaker housing according to another embodiment of the present invention.
  • FIG. 3 is a front view of the cover shown in FIG. BEST MODE FOR CARRYING OUT THE INVENTION
  • the molded article of the insulating component constituting a part of the switch according to the present embodiment is composed of 35 to 50% by weight of nylon 6 or nylon 6 series alloy, and 15 to 25% by weight of nylon. It can be obtained by injection molding an organic-inorganic composite composition containing a reinforcing material and 30 to 40% by weight of magnesium hydroxide into a mold. When molding a black molded article, for example, a black dye or a black pigment is added to the organic-inorganic composite composition.
  • Nylon 6 series alloys include Nylon 6 and Nylon 66, Nylon 6 and Acrylonitrile 'butadiene copolymer (ABS), Nylon 6 and modified polyphenylene oxide ( (Modified PPO), Nylon 6 and MXD 6, Nylon 6 and Nylon 66 and MXD 6, etc., all of which have a lower resin melting temperature during molding than magnesium hydroxide dehydration temperature . Therefore, when kneading the nylon 6 or nylon 6 alloy with magnesium hydroxide and when molding the material obtained by kneading, magnesium hydroxide is dehydrated. And almost no.
  • the reinforcement is one or more selected from the group consisting of glass fibers or ceramic fibers.
  • the diameter of the glass fiber it is preferable that the aspect ratio is 1 to 15 1 or more from the viewpoint of rigidity and strength.
  • FIG. 1 is a perspective view showing a base (90 mm width ⁇ 155 mm length ⁇ 40 mm height) of a circuit breaker housing.
  • a indicates the external dimension in the width direction, and the allowable dimension is 89.5 to 90.0 mm.
  • Comparative Example 1 has a composition comprising 70% by weight of nylon 6, 20% by weight of magnesium hydroxide, and 10% by weight of glass fiber as a reinforcing material. A molded product was used.
  • Table 1 shows the test results.
  • X indicates unacceptable
  • ⁇ indicates pass
  • ⁇ indicates that the dimensional difference ⁇ a is very small
  • dimensional a belongs to the approximate center of the allowable dimension range. Means what is preferred.
  • Nye B emissions 6 or Nai b greater the ratio of the emission 6 based Aroi becomes small is Ku
  • force 5 tends dimensional change after moisture absorption is Naru rather small
  • Nye B emissions 6 It was also found that when the content of nylon 6 series alloy was less than 35% by weight, the kneading of the reinforcing material and magnesium hydroxide tended to be difficult when kneading the materials.
  • Nylon 6 or Nylon 6-based alloy exceeds 50% by weight, the moisture absorption of the molded article comprising the organic-inorganic composite composition increases, and the dimensional change after molding tends to increase. It was found that the rigidity of the molded article tended to decrease, and the creep performance tended to decrease.
  • Nylon 6 or Nylon 6 alloy is 35 to 50% by weight.
  • the amount of the reinforcing material is less than 15% by weight, the strength of the molded article made of the organic-inorganic composite composition tends to decrease. Conversely, if the amount is 25% by weight or more, the orientation of the reinforcing material becomes large. In other words, it was found that the distortion of the molded article tended to increase. Therefore, 0 have then preferred that reinforcement is 1 5 to 2 5% by weight
  • the content of magnesium hydroxide is less than 30% by weight, insulation performance after interruption may be reduced. If the content is more than 40% by weight, brittleness, rigidity and mechanical strength are reduced. It turned out that there was a tendency. Therefore, the content of magnesium hydroxide is preferably 30 to 40% by weight.
  • nylon 6 or nylon 6 alloy is 45 to 50% by weight
  • reinforcing material is 20 to 25% by weight
  • magnesium hydroxide is 30 to 35% by weight
  • samples 1 and 2 that is, 45 to 50% by weight of nylon 6 or nylon 6 series alloy, 20% by weight of reinforcing material, and 30 to 3% of magnesium hydroxide.
  • the molding conditions such as the temperature of the molten resin and the mold temperature are wide, and the reinforcing material and water are added after molding. There was little precipitation of magnesium oxide on the surface of the molded article.
  • the range of molding conditions such as the temperature of the molten resin and the temperature of the mold, is wide, so that it is easy to obtain a complex case base and cover, especially a complex base shape, compared to a handle. It is possible.
  • the base and cover of the housing are larger than parts such as the handle and the crossbar, a large temperature gradient occurs before and after molding.However, a composition with a wide range of molding conditions, such as molten resin temperature and mold temperature, is used. This will increase the degree of freedom in molding conditions such as temperature control, and contribute to the production efficiency of the base and base.
  • Nylon 6 or Nylon 6 alloy is 35 to 45% by weight, reinforcing material is 15 to 25% by weight, and magnesium hydroxide is 30 to 40% by weight, More preferably, for samples 2 to 4, that is, 35 to 45% by weight of nylon 6 or nylon 6 series alloy, 20 to 25% by weight of reinforcing material, and 35 to 45% by weight of magnesium hydroxide At 40% by weight, the dimensional change after molding is smaller, the dimensional change after molding is small, and the production defect rate is low. In particular, when nylon 6 or nylon 6 alloy is 35 to 40% by weight, reinforcing material is 15 to 25% by weight, and magnesium hydroxide is 30 to 40% by weight, it is more preferable.
  • Nylon 6 As Nylon 6 or Nylon 6 series alloy was described, but the dimensions after molding were also used in the case of Nylon 6 series alloy. In terms of change It was a fruit.
  • Nylon 6 and Nylon 6 series alloys are described because of their unique features. Since Nylon 6 alloy is an alloy of a material having a lower hygroscopicity than Nylon 6, it was more effective than Nylon 6 in dimensional change after moisture absorption. On the other hand, the alloys of Nylon 6 and Nylon 6 with Nylon 66 are more insulated after shutting down than Nylon 6 series alloys (excluding Nalloon 6 and Nylon 66 alloy). It turned out that the performance was good.
  • the switch partially constituted by the molded article made of the organic-inorganic composition according to the present embodiment is made of Nylon 6 or Nylon contained in the organic-inorganic composite composition.
  • 6 series alloy, reinforcing material, and magnesium hydroxide are distributed at a specific ratio, so they have high insulation after switching off the switch, provide flame retardancy, and have small dimensional changes after molding. Low defect rate, high rigidity after molding, and excellent cleaving resistance.
  • this molded article does not use a halogen-based phosphorus-based additive as a flame-retardant imparting material, there is no doubt that dioxin or phosphine will be generated during combustion, and it is non-toxic.
  • Nylon 6 or Nylon 6-based alloy itself has a relatively high decomposition temperature as a resin, it contributes to an improvement in insulation performance after interruption.
  • the compositions of Samples 1 and 2 are more preferable in terms of productivity and appearance because they have a wide range of molding conditions, such as the temperature of the molten resin and the mold temperature, and the precipitation of the reinforcing material and magnesium hydroxide on the surface is small.
  • compositions of Samples 3 and 4 are more preferable for the dimensional change after moisture absorption because the dimensional difference ⁇ a is very small and the dimensional a belongs to the approximate center of the dimensional allowable range.
  • the pace of the circuit breaker housing has been described as a molded product, other components such as a power pad, a handle, a cross pad, and the like may be used.
  • Power Since the housing composed of the base, base, cover and base is one of the components with the largest overall length among the components of the switch, a molded product with the composition of this embodiment is used. This is preferable because the effect of dimensional change after molding is reduced and the production defect rate can be reduced efficiently.
  • part of the molded product is fixed by other parts by assembling, and the dimensional change that affects the performance of the switch is added. Rarely.
  • the molded article of the insulating component constituting a part of the switch according to the present embodiment is composed of 35 to 45% by weight of nylon 6 or nylon 6 series alloy, and 15 to 25% by weight of nylon.
  • An organic-inorganic composite composition containing a reinforcing material, 30 to 40% by weight of magnesium hydroxide, and 5 to 15% by weight of an inorganic material having a low orientation is obtained by injection molding into a mold.
  • Examples of the inorganic substance having a low orientation include alumina, calcined clay, unfired clay, silica, calcium silicate, magnesium oxide, calcium carbonate, magnesium carbonate, talc, myric acid, and wallacetonite. One or more of these inorganic substances may be used.
  • calcined clay, silica, calcium carbonate, and wallacetonite are preferred because of the good surface gloss of the molded product. Furthermore, baked crepe and wallacetonite are preferred because they are hardly damaged.
  • FIG. 2 is a perspective view of a cover (90 mm width ⁇ 155 mm length ⁇ 28 mm height) of the circuit breaker housing.
  • FIG. 3 is a view of the cover shown in FIG. 2 viewed from the direction A in FIG. FIG. In FIG. 3, b indicates the amount of distortion.
  • the molded article is molded (width dimension a immediately after molding is 89.5 mm to 89.6 mm), and then left at room temperature and humidity for 24 hours. Was measured.
  • the distortion amount of a total of 100 molded articles was measured for each sample (including the comparative example). If 97 or more molded products have a distortion amount within 0.5 mm, the test is passed. If it is 96 or less, the test is rejected. In Table 2 below, X is unacceptable, ⁇ , ⁇ is acceptable, and ⁇ is very preferable because the variation in the amount of distortion is extremely small (the standard deviation of the amount of distortion is small).
  • Example 2 a molded article having a composition comprising 50% by weight of nylon 6, 25% by weight of magnesium hydroxide, and 25% by weight of glass fiber as a reinforcing material was compared.
  • Example 3 a molded article having a composition comprising 50% by weight of nylon 6, 40% by weight of magnesium hydroxide, and 10% by weight of glass fiber as a reinforcing material was used.
  • Table 2 below, X indicates failure, ⁇ , ⁇ indicates pass, and ⁇ indicates a case where the defect rate is very good (the defect rate is 0.6% or less).
  • Table 2 shows the test results.
  • the molded article of Comparative Example 2 has a good defect rate at the time of component transport, but has a large amount of distortion.
  • the molded article of Comparative Example 3 has a small distortion amount and is good, but the defective rate at the time of component transport. Is out of the allowable range.
  • the distortion amount was within the allowable maximum value of 0.5 mm, and the defect rate during component transportation was 1.0% or less, which was a good result.
  • sample 78 that is, 35 to 40% by weight of nylon 6 or nylon 6 series alloy, approximately 15% by weight of glass fiber (reinforcing material), and 30 to 35% by weight of water
  • Magnesium oxide and approximately 15% by weight of wollastonite were found to be extremely excellent in terms of the amount of distortion and the rejection rate during part transport.
  • the molded articles according to Samples 5 to 8 of the present embodiment having an inorganic material having a low orientation in the composition all have a dimensional difference ⁇ a in the dimensional change test after molding described in the above-described embodiment. It was very small and the dimension a belonged to the approximate center of the dimension tolerance, which was a more favorable result with respect to the dimensional change.
  • the switch partially constituted by the molded article made of the organic-inorganic composition according to the present embodiment is used for the nylon 6 or nylon 6-based switch contained in the organic-inorganic composite composition.
  • Alloy, reinforcing material, magnesium hydroxide, and inorganic material with low orientation are distributed in a specific ratio, so that they have high insulation properties after switching off the switch, provide flame retardancy, and after molding
  • the dimensional change is extremely small and the production failure rate is low, the rigidity is high after molding and the creep resistance is excellent, and the failure rate when transporting parts is small.
  • the molded article of the present embodiment is significantly superior in terms of the amount of distortion and the defective rate at the time of parts transport, and the production defective rate Has been dramatically reduced.
  • the surface gloss of the molded product is good.
  • the use of calcined clay and wallacetonite makes it less likely that the molded product will be damaged. Therefore, the molded article of the present embodiment is significantly superior to the molded article of the above-described embodiment in which an inorganic material having a low orientation is not used, in that the surface gloss and scratch resistance are low.
  • the cover of the case of the circuit breaker has been described as a molded product, other components such as a base, a handle, a cross pad, etc. may be used.
  • the casing such as the cover and the base is a part having the largest overall length
  • the use of the molded article having the composition of the present embodiment can reduce distortion and efficiently reduce the defective production rate. It is preferable because it can be reduced to a minimum.
  • the housing cover It is preferable to use a molded article having the composition of the present embodiment because the surface is less likely to be scratched. Industrial applicability
  • the switch according to the present invention can be applied to a small switch having a high breaking capacity.

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  • Compositions Of Macromolecular Compounds (AREA)

Abstract

L'invention concerne un commutateur qui se compose d'une structure moulée isolante faisant office de boîtier, structure formée d'une composition organique/inorganique renfermant entre 35 et 50 % en poids de nylon 6 ou d'un alliage de nylon 6, entre 15 et 25 % en poids de renforcement et entre 30 et 40 % en poids d'hydroxyde de magnésium. La composition peut également contenir entre 35 et 45 % en poids de nylon 6 ou d'un alliage de nylon 6, entre 15 et 25 % en poids de renforcement, entre 30 et 40 % en poids d'hydroxyde de magnésium et entre 5 et 15 % en poids d'une substance inorganique. Cette dernière peut être une argile ou une wollastonite calcinée. La structure moulée est réduite en termes de dimensions et de contrainte et fait preuve d'une résistance améliorée à la rigidité et au fluage. Elle présente une surface brillante et est moins encline à être déparée.
PCT/JP1999/000121 1999-01-18 1999-01-18 Commutateur WO2000042107A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CNB998040916A CN1158353C (zh) 1999-01-18 1999-01-18 开关装置
EP99900330A EP1083203A1 (fr) 1999-01-18 1999-01-18 Commutateur
PCT/JP1999/000121 WO2000042107A1 (fr) 1999-01-18 1999-01-18 Commutateur
KR1020007010269A KR20010106098A (ko) 1999-01-18 1999-01-18 개폐기

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1999/000121 WO2000042107A1 (fr) 1999-01-18 1999-01-18 Commutateur

Publications (1)

Publication Number Publication Date
WO2000042107A1 true WO2000042107A1 (fr) 2000-07-20

Family

ID=14234723

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1999/000121 WO2000042107A1 (fr) 1999-01-18 1999-01-18 Commutateur

Country Status (4)

Country Link
EP (1) EP1083203A1 (fr)
KR (1) KR20010106098A (fr)
CN (1) CN1158353C (fr)
WO (1) WO2000042107A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1244128A2 (fr) * 2001-03-23 2002-09-25 Mitsubishi Denki Kabushiki Kaisha Disjoncteur

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100434936C (zh) * 2006-11-07 2008-11-19 西安交通大学 一种光开关低温有机-无机复合薄膜材料的制备方法
KR100924922B1 (ko) * 2009-06-05 2009-11-05 주식회사 비츠로테크 일체형 전원절환개폐기
CN111171563A (zh) * 2020-03-06 2020-05-19 广州华新科智造技术有限公司 聚酰胺材料及制备方法
KR102389730B1 (ko) * 2020-04-02 2022-04-22 엘에스일렉트릭(주) 아크 소호 조립체 및 이를 포함하는 차단기

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06234913A (ja) * 1993-01-07 1994-08-23 Bayer Ag 難燃性ポリアミド成形用組成物
JPH06290637A (ja) * 1993-03-30 1994-10-18 Hitachi Cable Ltd 難燃性電気絶縁組成物，及びそれを用いた絶縁電線
JPH073152A (ja) * 1993-03-11 1995-01-06 Basf Ag 防炎加工熱可塑性成形材料
JPH08171847A (ja) * 1994-12-19 1996-07-02 Mitsubishi Electric Corp 有機無機複合組成物及びそれを用いた開閉器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06234913A (ja) * 1993-01-07 1994-08-23 Bayer Ag 難燃性ポリアミド成形用組成物
JPH06240135A (ja) * 1993-01-07 1994-08-30 Bayer Ag 高度に難燃性のポリアミド系成形用組成物
JPH073152A (ja) * 1993-03-11 1995-01-06 Basf Ag 防炎加工熱可塑性成形材料
JPH06290637A (ja) * 1993-03-30 1994-10-18 Hitachi Cable Ltd 難燃性電気絶縁組成物，及びそれを用いた絶縁電線
JPH08171847A (ja) * 1994-12-19 1996-07-02 Mitsubishi Electric Corp 有機無機複合組成物及びそれを用いた開閉器

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1244128A2 (fr) * 2001-03-23 2002-09-25 Mitsubishi Denki Kabushiki Kaisha Disjoncteur
EP1244128A3 (fr) * 2001-03-23 2004-04-14 Mitsubishi Denki Kabushiki Kaisha Disjoncteur

Also Published As

Publication number Publication date
KR20010106098A (ko) 2001-11-29
CN1158353C (zh) 2004-07-21
EP1083203A1 (fr) 2001-03-14
CN1293699A (zh) 2001-05-02

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