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    • 77. 发明公开
    • A motor controller, particularly for an automotive fan
    • Motorregler,inbesonderefüreinGebläseeines Kraftfahrzeuges。
    • EP0573265A1
    • 1993-12-08
    • EP93304254.1
    • 1993-06-01
    • INTERNATIONAL RESISTIVE CO., INC.
    • Morris, Thomas M.
    • B60H1/00H01C7/00
    • B60H1/00828H01H37/761H01H2037/763
    • A vehicle fan motor controller includes a simple planar ceramic base (66) providing a plurality of printed resistors (46, 48, 50). The resistors include electrically conducive paths (68) printed on the ceramic overcoated with a thick resistive film (74). The thick film (74) substantially covers the base (66) to promote heat transfer to air moving in the fan duct (18) in which the controller is placed in use. The thick film resistors (46, 48, 50) are on both sides of the base (66) to reduce overall size and improve heat transfer. A thermal fuse (75, 76, 78) comprising a spring metal member (80) held in a normally closed position by a meltable material (82) opens in response to a predetermined high temperature.
    • 车载风扇电机控制器包括提供多个印刷电阻器(46,48,50)的简单平面陶瓷基座(66)。 电阻器包括印刷在用厚电阻膜(74)覆盖的陶瓷上的导电路径(68)。 厚膜(74)基本上覆盖基座(66),以促进热量传递到风扇管道(18)中移动的空气,在风扇管道(18)中控制器被放置在使用中。 厚膜电阻器(46,48,50)位于基座(66)的两侧,以减小总体尺寸并改善传热。 包括由可熔材料(82)保持在常闭位置的弹簧金属构件(80)的热熔丝(75,76,78)响应于预定的高温而打开。
    • 79. 发明公开
    • Screen-printed cylindrical resistors and method of making it
    • Durch Siebdruck hergestellter zylindrischer Widerstand。
    • EP0536895A1
    • 1993-04-14
    • EP92308115.2
    • 1992-09-08
    • CADDOCK ELECTRONICS, INC.
    • Caddock, Richard E., Jr.
    • H01C17/06H01C7/00
    • H01C17/065H01C7/003Y10T29/49099
    • A thick-film screen-printed elongate cylindrical resistor, comprises:

      (a) an elongate cylindrical substrate (10) having a diameter in the range of about 1/10 inch (2.5 mm) to about 1/2 inch (12.5 mm),
      (b) a V-serpentine screen-printed pattern (11) of thickfilm resistive material adherently applied onto said substrate (10) in such orientation that the two rows of apexes (14, 15) of said pattern (11) are generally along lines that are generally parallel to each other and to the axis of said substrate, said rows (14, 15) being spaced apart circumferentially of said pattern (11), to thereby form a space (16) between said rows (14, 15), said pattern (11) having line sections (12, 13) of adjacent lines that are not parallel to each other but instead are at small acute angles to each other, the gaps (16) between said apexes (14, 15) in each of said rows, at the open ends of the V-serpentine loops, and determined in a direction longitudinal to said substrate, being sufficiently large to cause said resistor to have a high voltage and/or power rating, said gaps (G) at said open ends of said loops being substantially larger than are the gaps (g) at the closed ends of said loops, said pattern (11) having end portions (20) that extend to the vicinities of the ends of said substrate (10),
      (c) cup-shaped metal end caps (22, 23) press-fit on the ends of said substrate (10) and electrically connected, respectively, to said end portions (20),
      (d) leads (24, 25) connected to said end caps (22, 23), and
      (e) an environmentally-protective insulating coating provided over said pattern. The apexes (14, 15) of the V-serpentine pattern (11) may each have an outer edge (17), closest to said space (16) between said rows, that is convex and rounded. The ratio of the width of said gaps (G) between apexes of said pattern at the open ends of said loops, to the line width of said pattern (11) at angularly-related sections (12, 13) thereof, may be in the range of 1.2 to 1, to 3 to 1. In a method of making such a resistor the height of the pattern (11) and the diameter of the substrate (10) is chosen to provide the desired low voltage coeffecient.
    • 厚膜丝网印刷细长圆柱形电阻器包括:(a)直径在约1/10英寸(2.5mm)至约1/2英寸(12.5mm)范围内的细长圆柱形基底(10) (b)以这样的取向粘附施加到所述基底(10)上的厚膜电阻材料的V蛇纹丝网印刷图案(11),使得所述图案(11)的两排顶点(14,15)通常沿着线 它们大致彼此平行并且与所述基板的轴线平行,所述列(14,15)在所述图案(11)的周向间隔开,从而在所述行(14,15)之间形成空间(16) 所述图案(11)具有彼此不平行的相邻线的线段(12,13),而是彼此处于小锐角处,每个中的所述顶点(14,15)之间的间隙(16) 所述行在V-蛇形环的开口端处,并且沿着与所述衬底纵向的方向确定,足够大以致 所述电阻器具有高电压和/或额定功率,所述环路的所述开口端处的所述间隙(G)基本上大于所述环路的封闭端处的间隙(g),所述模式(11)具有端部 延伸到所述基板(10)的端部附近的部分(20),(c)压配在所述基板(10)的端部上并分别电连接的杯状金属端盖(22,23) ,连接到所述端盖(22,23)的所述端部(20),(d)引线(24,25),和(e)设置在所述图案上的环境保护绝缘涂层。 V-蛇形图案(11)的顶点(14,15)可以各自具有最靠近所述行之间的所述空间(16)的外边缘(17),其为凸形和圆形。 在所述环的开口端处的所述图案的顶点之间的所述间隙(G)的宽度与所述图案(11)在其角度相关部分(12,13)处的线宽度的比率可以在 范围为1.2:1至3:1。在制造这种电阻器的方法中,选择图案(11)的高度和衬底(10)的直径以提供所需的低电压系数。