摘要:
An electromagnetic switch has a magnetic core having a base member and a disc member. The disc member is made of plates laminated along a pulling direction and has an inner hole. The base member has both a first portion and a second portion having a groove on its outer surface and disposed in the hole. An inner portion of a particular plate among the plates is disposed in the groove so as to fasten the particular plate to the base member. When the core is magnetized in response to excitation of a coil, a plunger is moved toward the first portion of the core along the pulling direction, a movable contact moved with the plunger comes in contact with a fixed contact electrically connected with a motor, and electric power is supplied to the motor through the fixed and movable contacts.
摘要:
The electric rotating machine includes a casing having first and second frames joined to each other at their opening ends in an axial direction, the first frame being formed with a fitting hole having an opened cross-sectional shape which opens to the opening end of the first frame. The electric rotating machine further includes a drain member made of rubber and fitted into the fitting hole. The drain member includes a fitting section having a neck portion through which a drain hole penetrates, and inner and outer collar portions facing with each other across from the neck portion. The drain member is installed on the first frame in such a state that the inner and outer collar portions abut against inner and outer wall surfaces of the first frame, respectively, by inserting the neck portion into the fitting hole from a side of the opening end of the first frame.
摘要:
A starter includes a magnetic switch, a motor, and a terminal. The terminal fixed to both the magnetic switch and the motor and has two end portions in the longitudinal direction of the terminal. An end portion of the terminal confronts a movable contact within the magnetic switch. The other end portion of the terminal is connected to an electric circuitry of the motor therewithin.
摘要:
The electric rotating machine includes a casing having first and second frames joined to each other at their opening ends in an axial direction, the first frame being formed with a fitting hole having an opened cross-sectional shape which opens to the opening end of the first frame. The electric rotating machine further includes a drain member made of rubber and fitted into the fitting hole. The drain member includes a fitting section having a neck portion through which a drain hole penetrates, and inner and outer collar portions facing with each other across from the neck portion. The drain member is installed on the first frame in such a state that the inner and outer collar portions abut against inner and outer wall surfaces of the first frame, respectively, by inserting the neck portion into the fitting hole from a side of the opening end of the first frame.
摘要:
An electromagnetic switch for use in actuating a starter for automotive vehicles is provided. The switch includes fixed contacts, a moving contact, and a plunger shaft. The moving contact is joined to a plunger shaft through an insulator. The plunger shaft is to be moved magnetically to bring the moving contact into abutment with the fixed contact to establish electric communication between the fixed contact. The switch also includes a rotation holder working to hold the moving contact and the insulator from rotating relative to each other. Use of the rotation holder results in a decrease in wear of the insulator. This eliminates the need for the insulator to have an additional thickness which would be worn down, thus permitting the insulator to be reduced in thickness to shorten the overall length of the switch.
摘要:
A starting apparatus includes a drive motor and a reduction gear having a planetary gear for starting an engine by the drive motor via the reduction gear. An internal gear of the reduction gear includes a locking projection projecting in an axial direction. A rotation restricting member is formed with a guide groove in which the locking projection is loosely received and guided in a circumferential direction. A shock absorbing member is held in the guide groove in a state of being elastically in close contact with the locking projection in the circumferential direction. Thus, shock load to the internal gear is alleviated from the start.
摘要:
A starting apparatus includes a drive motor and a reduction gear having a planetary gear for starting an engine by the drive motor via the reduction gear. An internal gear of the reduction gear includes a locking projection projecting in an axial direction. A rotation restricting member is formed with a guide groove in which the locking projection is loosely received and guided in a circumferential direction. A shock absorbing member is held in the guide groove in a state of being elastically in close contact with the locking projection in the circumferential direction. Thus, shock load to the internal gear is alleviated from the start.
摘要:
Terminal-bolts and a fixed contact are formed with different kinds of metals, and fixed to a fixing hole formed in the fixed contact by press fitting one end of the terminal-bolts. A plurality of concavo-convex parts is provided on a surface of the fixed contact that faces the movable contact. A plurality of concavo-convex portions is provided on another surface of the fixed contact that faces an anti movable-contact side. The concavo-convex portions are arranged so that positions of concave parts of the concavo-convex portions match positions of convex parts of the concavo-convex portions provided in the opposite surface of the fixed contact. The concavo-convex parts are at least partly curved, and have the same height and project in a height direction from the fixed contact.
摘要:
A starter for an engine is equipped with a planetary gear speed reducer, a restraining mechanism, and a shock absorber which is made up of a rotary disc, a stationary disc, a case, and a load applying mechanism. The load applying mechanism applies a load to the stationary and rotary discs to develop a given degree of friction therebetween. When an excessive torque acts on the rotary disc through the internal gear, the shock absorber induces the rotary disc to rotate against the given degree of friction to absorb the torque to eliminate a physical impact to be exerted on the planetary gear speed reducer. The restraining mechanism restrains the load applying mechanism from moving in a radius direction of the internal thread to avoid undesirable engagement of the load applying mechanism with the internal thread, thereby ensuring the stability in applying the load to the stationary and rotary discs.