CN1293699A - Switch - Google Patents
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- CN1293699A CN1293699A CN99804091A CN99804091A CN1293699A CN 1293699 A CN1293699 A CN 1293699A CN 99804091 A CN99804091 A CN 99804091A CN 99804091 A CN99804091 A CN 99804091A CN 1293699 A CN1293699 A CN 1293699A
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- Prior art keywords
- nylon
- weight
- molding
- magnesium hydroxide
- mixture
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- 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
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- 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
Abstract
A switch containing as a housing an insulating molded structure made of an organic/inorganic composition comprising 35 to 50 wt.% nylon 6 or nylon 6 alloy, 15 to 25 wt.% reinforcement, and 30 to 50 wt.% magnesium hydroxide. The composition may comprise 35 to 45 wt.% nylon 6 or nylon 6 alloy, 15 to 25 wt.% reinforcement, 30 to 40 wt.% magnesium hydroxide, and 5 to 15 wt.% inorganic substance. The inorganic substance may be calcined clay or wollastonite. The molded structure as a component of the switch is reduced in dimensional change and has improved rigidity and creep resistance. It is reduced in strain, has a satisfactory surface gloss, and is less apt to be marred.
Description
Technical field
The present invention relates to constitute the switching arrangement of one portion by the molding of insulation system thing.Relate in particular to molding and have high rigidity, high strength, insulativity, flame retardancy after energy maintained switch device opens circuit, molding is out of shape less, good, the not vulnerable switching arrangement of surface luster.
Background technology
Open the spy and to disclose a kind of switching arrangement that uses molding in the flat 8-171847 communique, comprise the composition of glass fibre of magnesium hydroxide, 5～40 weight % of nylon 6,15～50 weight % of 45～80 weight %.
Though used the switching arrangement of the molding that contains mentioned component to have insulativity after required rigidity, intensity and required creep properties, switching arrangement open circuit, flame retardancy etc., but still the back dimensional change that exist to be shaped, product percent of pass molding rigidity low, that obtain low (though low, but still can satisfy above-mentioned required rigidity.), be difficult to realize the problem of the more small-sized and slimming of this molding and the molding creep properties that obtains poor (though poor, but still can satisfy above-mentioned required creep properties).Cause this dimensional change, rigidity is low and the major cause of creep properties difference estimates it is because nylon 6 is hygroscopicity resins, the back that is shaped has absorbed moisture etc. from atmosphere.
Molding after the known firm shaping absorbs the moisture in the atmosphere etc. and causes dimensional change, and external causes such as the keeping state of the variation ratio of this dimensional change and molding and season are relevant.In addition, when switching arrangement is made in assembling used molding its be shaped and the assembling of switching arrangement is carried out in different places, in order to improve operating efficiency, normally in several hrs after the shaping～be used for after several weeks assembling.Thereby, in the short period of time in several hrs after shaping～several weeks, if bigger variation takes place in the physical dimension of molding, especially when this changes above allowed band, the parts that this molding just can not be re-used as assembling usefulness use, and the production fraction defective that can cause the packaging efficiency owing to switching arrangement impacts.
The present invention is just in order to address the above problem, purpose is by being combined into nylon contained in the branch 6 with specific proportional distribution organic-inorganic or nylon 6 is mixture, strengthening material, magnesium hydroxide, provide a kind of by the insulativity height after opening circuit, dimensional change after the shaping is little, produce the molding that the low insulation of fraction defective constitutes thing and constitute its a part of switching arrangement, its purpose also is to provide a kind of and has insulativity and flame retardancy after being opened circuit by switching arrangement, the molding that the good insulation of back rigidity height and creep resistant that is shaped simultaneously constitutes thing constitutes its a part of switching arrangement.
The present invention also aims to by be combined into nylon contained in the branch 6 or nylon 6 with specific proportional distribution organic-inorganic is mixture, strengthening material, magnesium hydroxide and the inorganics that can suppress the strengthening material orientation, provides a kind of molding littler by the dimensional change after being shaped, that the production fraction defective is lower, the back rigidity that is shaped insulation higher and that creep resistant is better constitutes thing to constitute its a part of switching arrangement.
The present invention also aims to, provide a kind of molding that constitutes thing by good, the not vulnerable insulation of surface luster to constitute its a part of switching arrangement.
Disclosure of an invention
Switching arrangement of the present invention is that the molding that the organic-inorganic of magnesium hydroxide of strengthening material, 30～40 weight % of mixture, 15～25 weight % is combined into branch constitutes its part by nylon 6 that contains 35～50 weight % or nylon 6, so the insulativity height after opening circuit, the dimensional change after being shaped are little, to produce fraction defective low.Again because nylon 6 or nylon 6 are that mixture is that 45～50 weight %, strengthening material are that 20～25 weight %, magnesium hydroxide are 30～35 weight %, molding conditions such as molten resin temperature and metal pattern temperature are looser, be shaped easily, strengthening material and magnesium hydroxide are less to separating out of surface simultaneously.
Because nylon 6 or nylon 6 are that mixture is that 35～45 weight %, strengthening material are that 15～25 weight %, magnesium hydroxide are 30～40 weight %, and the dimensional change after the shaping is littler, it is lower to produce fraction defective again.
Because nylon 6 or nylon 6 are that mixture is that 35～40 weight %, strengthening material are that 15～25 weight %, magnesium hydroxide are 30～40 weight %, and the dimensional change after the shaping is minimum, it is extremely low to produce fraction defective again.
Because molding is a shell,, can reduce the production fraction defective effectively again so be one of component parts maximum in the circuit-breaker component parts.
Again owing to be to be that the molding that the organic-inorganic of the few inorganics of the directional property of magnesium hydroxide, 5～15 weight % of strengthening material, 30～40 weight % of mixture, 15～25 weight % is combined into branchs constitutes its part, so the dimensional change behind the insulativity height after opening circuit, shaping is littler, the production fraction defective is lower by nylon 6 that contains 35～45 weight % or nylon 6.
Again because inorganics is sintered clay and wollastonite or wherein a kind of, so that molding is difficult for is injured.
Because molding is a shell,, can reduce the production fraction defective effectively again so be one of component parts maximum in the isolating switch component parts.
Have, molding is the pedestal of shell again, so surface luster is good, the surface is difficult for injured.
Simple declaration to accompanying drawing
Fig. 1 is the stereographic map of pedestal of the case for circuit breaker of the present invention's one example.
Fig. 2 is the stereographic map of loam cake of the case for circuit breaker of the another example of the present invention.
Fig. 3 is the front view of loam cake shown in Figure 2.
The optimal morphology that carries out an invention
Example of the present invention below is described.
The molding that the insulation that constitutes this example switching arrangement part constitutes thing is that the organic-inorganic that will contain the magnesium hydroxide of the nylon 6 of 35～50 weight % or strengthening material that nylon 6 is mixture, 15～25 weight % and 30～40 weight % is combined into branch and obtains behind the injection forming in metal pattern.When the molding with black system forms, be combined at organic-inorganic and add for example dyestuff and the black carbon of black system in the branch.
Nylon 6 is that mixture is nylon 6 and nylon 66, nylon 6 and acrylonitrile butadiene copolymer (ABS), nylon 6 and sex change polyhenylene oxidation thing (sex change PPO), nylon 6 and MXD6, nylon 6 and nylon 66 and MXD6 etc., and the resin melt temperature during shaping all is lower than the dehydration temperaturre of magnesium hydroxide.Thereby, with nylon 6 or nylon 6 being mixture and magnesium hydroxide when mixing and the material that obtains after mixing when forming, the phenomenon of magnesium hydroxide dehydration takes place hardly.This means to utilize containedly in the above-mentioned molding to apply gas, be combined into the free family that produces and insulate effectively of grading from constituting case for circuit breaker and inner organic composition, organic-inorganic during to electrode (not shown) switch of isolating switch from constituting distillation metal that contact and inner metal parts (electrode contact, tripping mechanism etc.) produce and the molten metal bath that splashes in about insulativity that magnesium hydroxide produced of carrying out dehydration reaction more than 250 ℃.
Strengthening material is to select more than a kind from the group who is made up of glass fibre or ceramic fiber.The diameter of glass fibre is preferably 1～15 μ m, and aspect ratio is more than 10, can improve rigidity and intensity like this.
Following dimensional change after the shaping that causes of the partition rate of explanation organic-inorganic thing.
[the dimensional change test after the shaping]
At first explanation is tested and is used molding.Fig. 1 is the stereographic map of the pedestal (90mm wide * 115mm length * 40mm height) of case for circuit breaker.In Fig. 1, a represents width physical dimension, and the size allowed band is 89.5～90.0mm.
(the width physical dimension a0 after just being shaped is 89.5～89.6mm), keeps 240 hours in the constant temperature and humidity cabinet that keeps 30 ℃-humidity 90% in back that this molding is shaped.After the constant temperature and humidity cabinet taking-up, measure width physical dimension a, if size a is qualified in above-mentioned size allowed band, otherwise be defective.In other words, (0～0.4mm) then is qualified to scale error △ a (=size a-size a0), and this scale error is the smaller the better in the scope of regulation.
Comparative Examples 1 adopts by the magnesium hydroxide of nylon 6, the 20 weight % of 70 weight % and the molding formed as the glass fibre of 10 weight % of strengthening material.
Table 1 expression test-results.In the table * be defective, zero, ◎ is qualified, ◎ represents that scale error △ a is minimum, and size a the size allowed band roughly in the middle of, be the optimum regime of dimensional change.
Table 1
| Project | Form | Back dimensional change test is shaped | ||
| Nylon 6 or nylon 6 are mixture | Magnesium hydroxide | Strengthening material | ||
| Comparative Examples 1 | Nylon 6 (70 weight %) | Magnesium hydroxide (20 weight %) | Glass fibre (10 weight %) | Defective * (89.86～90.06) |
| Sample 1 | Nylon 6 (50 weight %) | Magnesium hydroxide (30 weight %) | Glass fibre (20 weight %) | Qualified zero (89.75～89.95) |
| Sample 2 | Nylon 6 (45 weight %) | Magnesium hydroxide (35 weight %) | Glass fibre (20 weight %) | Qualified zero (89.72～89.92) |
| Sample 3 | Nylon 6 (40 weight %) | Magnesium hydroxide (40 weight %) | Glass fibre (20 weight %) | Qualified ◎ (89.70～89.90) |
| Sample 4 | Nylon 6 (35 weight %) | Magnesium hydroxide (40 weight %) | Glass fibre (25 weight %) | Qualified ◎ (89.67～89.87) |
As shown in table 1, the molding size a of Comparative Examples 1 has surpassed allowed band, and the size a of sample 1～4 is all in the size allowed band, and the dimensional change after the moisture absorption is good.
But, even the molding of Comparative Examples 1, if after just being shaped, be used for the assembled switch device immediately, then also can normally assemble, but (the scape technology of passing away) as mentioned above, the back even can not (test is 240 hours) deposit in the short period of time in several hrs～several weeks of being shaped is not easy to produce.
According to the result of above-mentioned test, nylon 6 or nylon 6 are that the ratio of mixture is more little, and the dimensional change after the moisture absorption is more little, but when nylon 6 or nylon 6 are the discontented 35 weight % of mixture, are carrying out material when mixing, and strengthening material and magnesium hydroxide are difficult to mix.And when nylon 6 or nylon 6 be mixture when surpassing 50 weight %, the rate of moisture absorption that is combined into the molding that branch constitutes by this organic-inorganic rises, the dimensional change after the shaping is big, the molding rigidity reduces, creep property reduces.
Thereby nylon 6 or nylon 6 are preferably 35～50 weight % of mixture.
In addition, when strengthening material is discontented with 15 weight %, be combined into the molding intensity reduction that branch constitutes by this organic-inorganic, on the contrary, when surpassing 25 weight %, the orientation of strengthening material increases, and the distortion of molding increases.Thereby strengthening material is preferably 15～25 weight %.
In addition,, the back insulating property that open circuit are reduced, and when surpassing 40 weight %, may become fragile, rigidity and physical strength are descended when magnesium hydroxide during less than 30 weight %.Thereby magnesium hydroxide is 30～40 weight % preferably.
In addition, nylon 6 or nylon 6 be mixture be 45～50 weight %, strengthening material be 20～25 weight %, when magnesium hydroxide is 30～35 weight %, preferably sample 1 and 2 o'clock, be nylon 6 or nylon 6 be mixture be 45～50 weight %, strengthening material be 20 weight %, when magnesium hydroxide is 30～35 weight %, organic-inorganic is being combined into after branch mixes, when this thing that mixes is carried out injection forming, molding conditions such as molten resin temperature and metal pattern temperature are loose, and be shaped simultaneously back strengthening material and magnesium hydroxide are few to separating out of molding surface.Thereby molding is shaped easily, can obtain ganoid molding simultaneously.In addition, be combined in the branch at organic-inorganic and add black dyes and can obtain the black molding, form like this if organic-inorganic is combined into branchs, then strengthening material and magnesium hydroxide lack to just separating out of molding surface, so can reduce the albefaction of molding, obtain the good molding of outward appearance.Especially, the outward appearance of shell is very important, so be applicable to very much this shell.Have again, because molding conditions such as molten resin temperature and metal pattern temperature are loose, so obtain the pedestal and the loam cake of the shell of texture ratio handle complexity easily, especially complex-shaped pedestal.In addition, the pedestal and the loam cake of shell are bigger than parts such as handle, cross bars, so can before and after being shaped, produce thermograde, and when if molding conditions such as molten resin temperature and metal pattern temperature are loose, then the handiness on molding conditions such as temperature control is just higher, helps to improve the production efficiency of this pedestal and loam cake.
In addition, nylon 6 or nylon 6 be mixture be 35～45 weight %, strengthening material be 15～25 weight %, when magnesium hydroxide is 30～40 weight %, preferably in sample 2～4 o'clock, be nylon 6 or nylon 6 be mixture be 35～45 weight %, strengthening material be 20～25 weight %, when magnesium hydroxide is 35～40 weight %, dimensional change after the shaping is littler, and it is low to produce fraction defective.Especially nylon 6 or nylon 6 be mixture be 35～40 weight %, strengthening material be 15～25 weight %, when magnesium hydroxide is 30～40 weight %, preferably sample 3 and 4 o'clock, be nylon 6 or nylon 6 be mixture be 35～40 weight %, strengthening material be 20～25 weight %, when magnesium hydroxide is 40 weight %, dimensional change after the shaping is minimum, and it is extremely low to produce fraction defective.
In the sample 1～4 of above-mentioned test, be mixture as nylon 6 or nylon 6, usefulness be nylon 6, and when adopting nylon 6 to be mixture, can obtain equal above result about the dimensional change after being shaped.Here illustrate that nylon 6 and nylon 6 are mixture feature separately.Nylon 6 is that mixture is compared with nylon 6, the mixtures of material lower with water absorbability, thus compare with nylon 6, more effective aspect the dimensional change after moisture absorption.And being mixture (except the mixture of nylon 6 and nylon 66), the mixture of nylon 6 and nylon 6 and nylon 66 and nylon 6 compares the good insulating after opening circuit.
As mentioned above, it is mixture, strengthening material and magnesium hydroxide that the switching arrangement that the molding that constitutes with the organic-inorganic thing of this example constitutes one portion distributes nylon 6 contained in organic inorganic compounding composition or nylon 6 with specific ratio, so have very high insulativity and flame retardancy after switching arrangement opens circuit, dimensional change after the shaping is little, the production fraction defective is low, and be shaped back rigidity height and creep resistant are good.In addition, this molding applies material without the interpolation material of halogen system and phosphorus system as flame retardancy and uses, so can not produce dioxane and phosphuret-(t)ed hydrogen PH when burning
3, thereby nontoxic.
In addition, nylon 6 or nylon 6 be mixture self as resin, its decomposition temperature is higher, so help to improve the insulating property after opening circuit.
When adopting the composition of sample 1,2, molding conditions such as molten resin temperature and metal pattern temperature are looser, and strengthening material and magnesium hydroxide are less to separating out of surface simultaneously, so manufacturability is good, outward appearance is good.
When adopting the composition of sample 3,4, scale error △ a is minimum, and size a is in the substantial middle of size allowed band, so more can deal with the dimensional change after the moisture absorption.
More than Shuo Ming molding is the pedestal of case for circuit breaker, certainly also is applicable to other parts, such as loam cake, handle, cross bar etc.Loam cake, pedestal, and the shell that constitutes by loam cake and pedestal be one of parts the longest in the parts of switching arrangement, so use the molding of this example to alleviate to be shaped the influence of back dimensional change, reduce the production fraction defective effectively.
About the molding dimensional change after the assembling, molding is by assembling, and not only its part is fixed by miscellaneous part, and the dimensional change of the switching arrangement performance that can make a difference hardly.
Other examples of the present invention below are described.
Nylon 6 or the organic-inorganic of the directional property of the magnesium hydroxide of nylon 6 strengthening material that be mixture, 15～25 weight %s, 30～40 weight %s, 5～15 weight %s few inorganics of the molding that the insulation that constitutes this example switching arrangement part constitutes thing by will containing 35～45 weight % is combined into branch and carries out injection forming obtain in metal pattern.
The few inorganics of qualitative property has aluminum oxide, sintered clay, not sintered clay, silica, Calucium Silicate powder, magnesium oxide, lime carbonate, magnesiumcarbonate, talcum, mica, wollastonite etc.These inorganicss use and get final product more than a kind.
Wherein, from the angle of utilizing pool, molding surface, the most handy sintered clay, silica, lime carbonate, wollastonite are arranged.Never vulnerable angle is set out the most handy sintered clay, wollastonite.
Below the explanation organic-inorganic is combined into the molding deflection that the partition rate of branch causes, the fraction defective when parts transport.
[molding deflection mensuration]
At first the molding of usefulness is tested in explanation.Fig. 2 is the stereographic map of the loam cake (90mm wide * 155mm length * 28mm height) of case for circuit breaker.Fig. 3 is that the A direction from Fig. 2 is seen the loam cake among this Fig. 2, i.e. its front view.B among Fig. 3 represents deflection.
This molding is formed (the width physical dimension a after just being shaped
0For 89.5mm～89.6mm) placed 24 hours then, measure the deflection of molding then under ambient temperature and moisture.Each sample (containing Comparative Examples) is measured the deflection of 100 molding.When deflection is qualified, be lower than 96 then for defective when 0.5mm surpasses 97 with interior molding.In the following table 2 * be defective, zero, ◎ is qualified, ◎ represents scale error amount minimum (deviant deflection is little), is optimum regime.
[fraction defective when parts transport]
The operation of molding being taken out and place operation on the travelling belt through automatic knockout machine, molding with the operation of the vanning of the molding on the travelling belt, after will case transports from metal pattern, with containerised molding from the case taking-up for these ordinary production operations of operation of assembling after, appearance surfaces to molding (parts) checks, and the fraction defective when calculating parts and transporting.In Fig. 2, when having 3 above length to surpass the scar of 2mm on the appearance surfaces (design face), be defective, if this scar 2 with next be qualified.So-called appearance surfaces is meant and can 1., 2. reaches the face that 3. upper side is seen in the side from Fig. 2.Fraction defective when in addition, each sample (containing Comparative Examples) being measured transporting of 1000 molding.
Comparative Examples 2 is used by the magnesium hydroxide of nylon 6, the 25 weight % of 50 weight % and the molding formed as the glass fibre of 25 weight % of strengthening material, and Comparative Examples 3 uses are by the magnesium hydroxide of nylon 6, the 40 weight % of 50 weight % and the molding formed as the glass fibre of 10 weight % of strengthening material.In the table 2 * and be defective, zero, ◎ is qualified, ◎ represents fraction defective extremely low (fraction defective is lower than 0.6%).
Table 2 expression test-results.
Table 2
| Form | Deflection is measured | Fraction defective when parts transport (%) | ||||
| Nylon 6 or nylon 6 are mixture | Magnesium hydroxide | Strengthening material | Inorganics | |||
| Comparative Examples 2 (weight %) | Nylon 6 (50) | Magnesium hydroxide (25) | Glass fibre (25) | ????-- | Defective * | Qualified ◎ (0.6) |
| Comparative Examples 3 (weight %) | Nylon 6 (50) | Magnesium hydroxide (40) | Glass fibre (10) | ????-- | Qualified ◎ | Defective * (4.5) |
| Sample 5 (weight %) | Nylon 6 (45) | Magnesium hydroxide (30) | Glass fibre (20) | Wollastonite (5) | Qualified zero | Qualified zero (0.8) |
| Sample 6 (weight %) | Nylon 6 (45) | Magnesium hydroxide (30) | Glass fibre (15) | Wollastonite (10) | Qualified zero | Qualified ◎ (0.5) |
| Sample 7 (weight %) | Nylon 6 (40) | Magnesium hydroxide (30) | Glass fibre (15) | Wollastonite (15) | Qualified ◎ | Qualified ◎ (0.3) |
| Sample 8 (weight %) | Nylon 6 (35) | Magnesium hydroxide (35) | Glass fibre (15) | Wollastonite (15) | Qualified ◎ | Qualified ◎ (0.4) |
As shown in table 2, though the fraction defective when the molding parts of Comparative Examples 2 transport is lower, deflection increases, though the molding deflection of Comparative Examples 3 is less, the fraction defective when parts transport is higher, exceeds allowed band.
And sample 5～8 obtains good result, and all in maximum permissible value 05mm, the fraction defective when parts transport also is lower than 1.0% to deflection.Use sample 7 and at 8 o'clock, promptly, use the nylon 6 of 35～40 weight % or nylon be mixture, roughly the glass fibre of 15 weight % (strengthening material), 30～35 weight % magnesium hydroxide, roughly during the wollastonite of 15 weight % (inorganics that directional property is few), fraction defective was all extremely low when deflection and parts transported.
In addition, when this organic-inorganic was combined into inorganics used in the branch less than 5 weight %, the minimizing of molding distortion was just abundant inadequately, on the contrary, when surpassing 15 weight %, the trend that the molding that obtains has physical strength to reduce.But, in table 2,, also can obtain the result roughly the same with wollastonite if make inorganics with sintered clay.
As for the molding of the sample 5～8 of this example, be to contain dimensional change test after the shaping of molding of the few inorganics of directional property in the composition, all scale error △ a are minimum, and size a is in the substantial middle of allowed band, dimensional change is littler.
As mentioned above, a part of switching arrangement is combined into nylon contained in the branch 6 with specific proportional distribution organic-inorganic or nylon 6 is the few inorganics of mixture, strengthening material, magnesium hydroxide and directional property owing to constitute with the molding that is made of the organic-inorganic composition of this example, so after switching arrangement opens circuit very high insulativity and flame retardancy are arranged, dimensional change after being shaped simultaneously is minimum, the production fraction defective is low, be shaped back rigidity height and creep resistant is strong, and the fraction defective of parts when transporting is low.Especially compare with the molding of the few inorganics of the directional property of not using above-mentioned example, the fraction defective when molding deflection of this example and parts transport all reduces greatly, produces fraction defective and descends significantly.
In addition, as inorganics, if use sintered clay, silica, lime carbonate, wollastonite, the then good luster on molding surface.And if use sintered clay, wollastonite, then molding is difficult for injured.Thereby, to compare with the molding of the few inorganics of the directional property of not using above-mentioned example, the molding of this example is surface luster and be difficult for very big advantage being arranged aspect injured.
More than Shuo Ming molding is the loam cake of case for circuit breaker, also is applicable to miscellaneous part certainly, such as pedestal, handle, cross bar etc.Shell such as loam cake and pedestal is the longest parts of total length, and the molding of the composition of this example can reduce deflection, effectively reduces and produces fraction defective, so be particularly useful for these parts.And if cover the molding of the composition that uses this example on shell, then the surface is difficult for injured.
The possibility of industrial utilization
As mentioned above, switching device of the present invention is applicable to switching device small-sized and that breaking capacity is high.
Claims (9)
1. a switching arrangement is characterized in that, is that the molding that the organic-inorganic of magnesium hydroxide of strengthening material, 30～40 weight % of mixture, 15～25 weight % is combined into branch constitutes its part by nylon 6 that contains 35～50 weight % or nylon 6.
2. switching arrangement according to claim 1 is characterized in that, nylon 6 or nylon 6 are that mixture is 45～50 weight %, and strengthening material is 20～25 weight %, and magnesium hydroxide is 30～35 weight %.
3. switching arrangement according to claim 1 is characterized in that, nylon 6 or nylon 6 are that mixture is 35～45 weight %, and strengthening material is 15～25 weight %, and magnesium hydroxide is 30～40 weight %.
4. switching arrangement according to claim 1 is characterized in that, nylon 6 or nylon 6 are that mixture is 35～40 weight %, and strengthening material is 15～25 weight %, and magnesium hydroxide is 30～40 weight %.
5. switching arrangement according to claim 3 is characterized in that, molding is a shell.
6. switching arrangement, it is characterized in that, be that the molding that the organic-inorganic of the few inorganics of the directional property of magnesium hydroxide, 5～15 weight % of strengthening material, 30～40 weight % of mixture, 15～25 weight % is combined into branch constitutes its part by nylon 6 that contains 35～45 weight % or nylon 6.
7. switching arrangement according to claim 6 is characterized in that, inorganics be sintered clay and wollastonite or wherein any.
8. switching arrangement according to claim 6 is characterized in that molding is a shell.
9. switching arrangement according to claim 8 is characterized in that, molding is the pedestal of shell.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP1999/000121 WO2000042107A1 (en) | 1999-01-18 | 1999-01-18 | Switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1293699A true CN1293699A (en) | 2001-05-02 |
| CN1158353C CN1158353C (en) | 2004-07-21 |
Family
ID=14234723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB998040916A Expired - Fee Related CN1158353C (en) | 1999-01-18 | 1999-01-18 | Switch |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1083203A1 (en) |
| KR (1) | KR20010106098A (en) |
| CN (1) | CN1158353C (en) |
| WO (1) | WO2000042107A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100434936C (en) * | 2006-11-07 | 2008-11-19 | 西安交通大学 | Process of preparing low temp. organic inorganic composite film material for light switch |
| CN111171563A (en) * | 2020-03-06 | 2020-05-19 | 广州华新科智造技术有限公司 | Polyamide material and preparation method thereof |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002289083A (en) * | 2001-03-23 | 2002-10-04 | Mitsubishi Electric Corp | Circuit breaker |
| KR100924922B1 (en) * | 2009-06-05 | 2009-11-05 | 주식회사 비츠로테크 | Power transfer switch of one body type |
| KR102389730B1 (en) * | 2020-04-02 | 2022-04-22 | 엘에스일렉트릭(주) | Arc extinguishing assembly and circuit breaker having the same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0605863A3 (en) * | 1993-01-07 | 1995-05-17 | Bayer Ag | Flame retardant polyamide moulding compositions. |
| DE4307682A1 (en) * | 1993-03-11 | 1994-09-15 | Basf Ag | Halogen free flame retardant thermoplastic polyamide molding compounds |
| JPH06290637A (en) * | 1993-03-30 | 1994-10-18 | Hitachi Cable Ltd | Flame-resistant electric insulating composite and insulated wire using the composite |
| JP3016344B2 (en) * | 1994-12-19 | 2000-03-06 | 三菱電機株式会社 | Switch |
-
1999
- 1999-01-18 EP EP99900330A patent/EP1083203A1/en not_active Withdrawn
- 1999-01-18 CN CNB998040916A patent/CN1158353C/en not_active Expired - Fee Related
- 1999-01-18 KR KR1020007010269A patent/KR20010106098A/en not_active Application Discontinuation
- 1999-01-18 WO PCT/JP1999/000121 patent/WO2000042107A1/en not_active Application Discontinuation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100434936C (en) * | 2006-11-07 | 2008-11-19 | 西安交通大学 | Process of preparing low temp. organic inorganic composite film material for light switch |
| CN111171563A (en) * | 2020-03-06 | 2020-05-19 | 广州华新科智造技术有限公司 | Polyamide material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1158353C (en) | 2004-07-21 |
| WO2000042107A1 (en) | 2000-07-20 |
| EP1083203A1 (en) | 2001-03-14 |
| KR20010106098A (en) | 2001-11-29 |
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