초록 ▼

An electromagnetic switch apparatus incorporating a pair of stationary contacts and a movable contact at the rear end of a magnetic path core, wherein the stationary contacts are respectively composed of a contact part and a conductive part aligned in L-shape, wherein the conductive part at axial-di

An electromagnetic switch apparatus incorporating a pair of stationary contacts and a movable contact at the rear end of a magnetic path core, wherein the stationary contacts are respectively composed of a contact part and a conductive part aligned in L-shape, wherein the conductive part at axial-directional side extends to the external circumference of an exciting coil, and wherein a terminal member is connected to an end of this conductive part and extends in the radial direction. A pair of stationary contacts are respectively molded in a pair of insulating members or in an insulating member secured to the rear end of the magnetic path core. An O-ring is secured to the external circumference of the insulating member. A case enveloping the exciting coil and a cover member enveloping those stationary and movable contacts respectively sandwich the O-ring in the axial direction to generate water-proof sealing effect. The intermediate region of a hollow rod which is secured to a movable core and has the front end extended to hollow region of an armature rotating shaft is held inside the internal circumferential region of a stationary core accross minimal gap which narrowly allows the hollow rod to slidably move in the axial direction therein.

대표청구항 ▼

A starter which starts up operation of an engine comprising; a DC motor which incorporates a hollow armature rotating shaft; an output rotary shaft whose one end is held inside of said hollow armature rotating shaft and the other end is provided with a pinion which is engageable with a ring gear of

A starter which starts up operation of an engine comprising; a DC motor which incorporates a hollow armature rotating shaft; an output rotary shaft whose one end is held inside of said hollow armature rotating shaft and the other end is provided with a pinion which is engageable with a ring gear of said engine by the movement thereof; and an electromagnetic switch apparatus including the following; an exciting coil which is wound on a bobbin; a first stationary core which covers an end of said exciting coil and holds an end portion of said armature rotating shaft through a bearing unit; a second stationary core which envelops the other end and external circumference of said exciting coil and is coupled with said first stationary core; a pair of stationary contacts which are respectively secured to said second stationary core with an insulating member intervened; a movable core which is movably held at the internal circumference said of said bobbin with facing to said first stationary core and moves by excitation; a movable contact which is electrically insulated from said movable core, is held thereby with facing to said pair of stationary contacts, and closes said pair of stationary contacts by the movement of said movable core; a hollow rod which is secured to said movable core and extends into hollow region of said armature rotating shaft; and a push rod, which is held in said hollow rod, and of which one end is pressed against the end of said output rotary shaft through a steel ball; the intermediate region of said hollow rod being held in said first stationary core across a minimal gap narrowly allowing said hollow rod to slidably move therein.