摘要:
An air atomizing electrostatic coating gun which atomizers a liquid paint by using air flows and thereafter applying atomized liquid paint to an object to be coated by using an electrostatic force. In this coating gun, all of a rod valve, a driving piston, an air cylinder and valve support members of a needle valve device are made of insulating materials having good insulating properties, and an electrode for charging paint particles is attached to the valve. A nozzle-needle valve assembly which is integrally constructed by attaching a paint nozzle to a cylindrical extension of the air cylinder which is formed at a front end portion thereof, is inserted and fitted into a generally cylindrical cavity in a front end portion of the gun body from the front side thereof. An integral molded body incorporating a direct current high-voltage power source is formed by molding a synthetic resin having good insulating properties to embed therein a boosting high-voltage transformer, a rectifier type direct current high-voltage generator and a spiral-wound flat high-resistance element, and this integral molded body is detachably attached and fixed inside of the gun body by inserting it into a cavity formed in a rear end portion of the gun body from the rear side thereof.
摘要:
An electrostatic painting gun for painting minute places which are hard to reach is disclosed. The electrostatic painting gun includes a bent rod-shaped gun and a bracket which are arranged so as to form a trapezoid-like pocket space. The trapezoid-like pocket space serves to provide the electrostatic painting gun with better accessibility to the minute places.
摘要:
A throttle device for applying a back pressure to a high viscosity point in an airless paint supply system. The throttle device comprises a tube member having an inner through hole and an elongated core member inserted in the tube member and extending along the length of the tube member. A support means supports the core member relative to the tube member and a clearance is provided between the tube member and the core member to constitute a passage for the paint, the clearance being equal to or larger than 1.5 millimeters, and the length of the tube member being selected in relation to the clearance so as to cause a required loss of pressure.
摘要:
A condenser for a power module combines a plurality of aluminum materials to form a casing equipped with a channel for coolant therein, thus making it possible to keep material costs low. Moreover, thanks to the excellent workability of the aluminum materials, it is possible to adopt a configuration with a complex concave-convex configuration for a superior heat radiation performance. A channel for coolant with high heat radiation performance can also be structured inside the casing. The relatively thick bottom plate secures the rigidity required by the casing, while the relatively thin top plate can have a rigidity intentionally structured lower. In this manner, stress generated on joining surfaces of the condenser and an insulative substrate can be mitigated due to active deformation of the top plate.
摘要:
A condenser for a power module combines a plurality of aluminum materials to form a casing equipped with a channel for coolant therein, thus making it possible to keep material costs low. Moreover, thanks to the excellent workability of the aluminum materials, it is possible to adopt a configuration with a complex concave-convex configuration for a superior heat radiation performance. A channel for coolant with high heat radiation performance can also be structured inside the casing. The relatively thick bottom plate secures the rigidity required by the casing, while the relatively thin top plate can have a rigidity intentionally structured lower. In this manner, stress generated on joining surfaces of the condenser and an insulative substrate can be mitigated due to active deformation of the top plate.
摘要:
An insulating circuit board includes an insulating plate, a circuit board joined to a first surface of the insulating plate, and a metal plate joined to a second surface of the insulating plate. The circuit board is formed from an Al alloy having a purity of 99.98% or more or pure Al, and the metal plate is formed from an Al alloy having a purity of 98.00% or more and 99.90% or less. The thickness (a) of the circuit board is 0.2 mm or more and 0.8 mm or less, the thickness (b) of the metal plate is 0.6 mm or more and 1.5 mm or less, and the thicknesses satisfy the expression of a/b≦1. An insulating circuit board having a cooling sink includes cooling sink joined via a second solder layer. The second solder layer contains Sn as its main component, and has a Young's modulus, 35 GPa or more, a 0.2% proof stress of, 30 MPa or more, and a tensile strength of, 40 MPa or more. The cooling sink is formed from, pure Al or an Al alloy.
摘要翻译:绝缘电路板包括绝缘板,连接到绝缘板的第一表面的电路板和连接到绝缘板的第二表面的金属板。 电路板由纯度为99.98%以上的Al合金或纯Al形成,金属板由纯度为98.00%以上且99.90%以下的Al合金形成。 电路板的厚度(a)为0.2mm以上且0.8mm以下,金属板的厚度(b)为0.6mm以上且1.5mm以下,厚度满足a / b <= 1。 具有冷却槽的绝缘电路板包括通过第二焊料层接合的冷却水槽。 第二焊料层含有Sn作为其主要成分,杨氏模量为35GPa以上,0.2%屈服应力为30MPa以上,拉伸强度为40MPa以上。 冷却槽由纯Al或Al合金形成。