Abstract

The present invention reduces the risk of malfunction occurrence in the event of an accidental flow of large current.　A protection element 14 has a case 42, a thermal fuse element 34, and a current fuse element 36. The thermal fuse element 34 is accommodated in the case 42. The current fuse element 36 is accommodated in the case 42. The current fuse element 36 has a melting point higher than that of the thermal fuse element 34. The thermal fuse element 34 and the current fuse element 36 are connected in parallel.

IPC Classes  ?

• H01H 37/76 - Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
• H01H 85/02 - Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive Details
• H01H 85/10 - Fusible members characterised by the shape or form of the fusible member with constriction for localised fusing
• H01H 85/12 - Two or more separate fusible members in parallel
• H01H 85/18 - Casing fillings, e.g. powder
• H01H 85/38 - Means for extinguishing or suppressing arc

Abstract

A lead-free solder contains 93.0 mass % or more and 98.95 mass % or less of indium, 1.0 mass % or more and 4.0 mass % or less of tin, and an addition metal. The addition metal contains at least one of silver, antimony, copper, or nickel. The addition metal is neither indium nor tin. The total of mass percentage of the addition metal is 0.05 mass % or more and 6.0 mass % or less. The sum of the total mass percentage of the addition metal, the mass percentage of indium, and the mass percentage of tin is 100 mass % or less.

IPC Classes  ?

• B23K 35/26 - Selection of soldering or welding materials proper with the principal constituent melting at less than 400°C
• C22C 28/00 - Alloys based on a metal not provided for in groups

Abstract

Provided is a protective element wherein malfunctions do not readily occur despite the magnitude of the current that may flow therethrough. This protective element 10 comprises a positive electrode 22, a negative electrode 24, an inter-electrode conductor 26, a joining material 28, a compression coil spring, a thermal energy supplying part 32, and a holding body 34. The inter-electrode conductor 26 is disposed spanning across the positive electrode 22 and the negative electrode 24. The joining material 28 joins the inter-electrode conductor 26 to each of the positive electrode 22 and the negative electrode 24. The compression coil spring applies a separation force onto the inter-electrode conductor 26. The thermal energy supplying part 32 supplies thermal energy to the joining material 28. One end 60 of one plate-shaped part 50 of the positive electrode 22 protrudes to the exterior of the holding body 34. The one plate-shaped part 50 is plate shaped. One end 64 of another plate-shaped part 54 of the negative electrode 24 protrudes to the exterior of the holding body 34 in a different direction from that of the one plate-shaped part 50. The other plate-shaped part 54 is disposed on the same plane as the one plate-shaped part 50. The other plate-shaped part 54 is plate shaped.

IPC Classes  ?

• H01H 37/76 - Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material

Abstract

The invention reduces the size of a protective element. The protective element comprises a conductor 54 and a case 12. The conductor 54 fuses when the integrated Joule heating value reaches a predetermined value or greater. The case 12 houses the conductor 54. The case 12 comprises an external shell portion 30 and a reinforcement portion 32. The conductor is housed in the external shell portion 30. When a force is applied onto the external shell portion 30, the reinforcement portion 32 restricts the deformation of the external shell portion 30. If the case 12 comprises the external shell portion 30 and the reinforcement portion 32, the risk that the case 12 becomes damaged is reduced even if the capacity of the case 12 has not been increased proportionally to the volume of the object to be housed therein. In this manner, a reduction in size becomes possible relative to a protective element whereof the capacity of the case 12 has been increased proportionally to the volume of the object to be housed therein.

IPC Classes  ?

• H01H 85/175 - Casings characterised by the casing shape or form
• H01H 85/045 - General constructions or structure of low voltage fuses, i.e. below 1,000 V, or of fuses where the applicable voltage is not specified cartridge type

Abstract

Provided is a protective device which has large rated voltage and rated current and is able to sufficiently suppress the occurrence of arc during operation and fully open a circuit. A protective device is characterized by comprising: (i) a protective element which comprises a first temperature fuse and a resistor, and in which the resistor generates heat by the passage of an electric current through the resistor when abnormality occurs, and the first temperature fuse operates by this heat and interrupts an electric current; (ii) a PTC element; and (iii) a second temperature fuse, and in that the second temperature fuse is electrically connected in series with the PTC element, the first temperature fuse of the protective element is electrically connected in parallel with the PTC element and the second temperature fuse, and when the abnormality occurs, the PTC element trips and generates heat by operating the protective element, and the second temperature fuse is blown by this heat.

IPC Classes  ?

• H01H 37/76 - Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
• H01C 7/02 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient

Abstract

A glazing is disclosed comprising at least one ply of glass having an electrically conductive component on at least one surface, and an electrical connector electrically connected to the electrically conductive component through a soldered joint, the solder of the joint having a composition comprising 0.5 wt% or more indium, wherein the electrical connector comprises a nickel plated contact for contacting the solder. Also disclosed are solders having a composition comprising 14 to 75 wt% In, 14 to 75 wt% Sn, to 5 wt% Ag, to 5 wt% Ni, and less than 0.1 wt% Pb. Also disclosed is use of a solder having a composition comprising 0.5 wt% or more indium to solder a nickel plated electrical connector to an electrically conductive component on the surface of a ply of glass. The aspects of the invention improve the durability of electrical connections on glazing.

IPC Classes  ?

• B23K 35/26 - Selection of soldering or welding materials proper with the principal constituent melting at less than 400°C
• C03C 27/04 - Joining glass to metal by means of an interlayer
• B32B 17/10 - Layered products essentially comprising sheet glass, or fibres of glass, slag or the like comprising glass as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin

Goods & Services

Thermal Fuses

Goods & Services

Thermal Fuses