Prime-mover dynamo plants – Electric control – Electric-starting motor
Reexamination Certificate
2000-03-20
2001-03-13
Ramirez, Nestor (Department: 2834)
Prime-mover dynamo plants
Electric control
Electric-starting motor
C290S048000
Reexamination Certificate
active
06201311
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a starter for starting an engine and, particularly, to a connection structure between the motor side fixed contact point and excitation coil of an electromagnetic switch placed in an internal space surrounded by the housing of a starter.
2. Description of the Prior Art
FIG. 7
is a partial cutaway side view of a connection structure between the terminal and excitation coil of an electromagnetic switch for a prior art starter. A similar structure is disclosed by Japanese Patent No. 57-54118. In
FIG. 7
, reference numeral
100
denotes a housing,
101
an excitation coil stored in the housing
100
,
102
a suction coil which is one element of the excitation coil
101
,
103
the lead wire of the suction coil
102
,
104
a holding coil which is the other element of the excitation coil
101
,
105
the lead wire of the holding coil
104
,
106
a terminal housing fixed in the opening of the housing
100
,
107
an external terminal provided for the terminal housing
106
, and
108
solder for connecting the lead wire
105
of the holding coil
104
to the external terminal
107
.
SUMMARY OF THE INVENTION
To reduce the size and weight of a starter, there is employed such a structure that an output shaft connected to a motor, the excitation coil of an electromagnetic switch, an overrunning clutch and a pinion gear are stored in an internal space surrounded by a housing, and the excitation coil, overrunning clutch and pinion clutch are arranged coaxial to the output shaft. In this case, the contact point portion of the electromagnetic switch is installed in the housing in such a manner that it extends from the inside to the outside of the housing, and the motor side fixed contact point of the contact point portion and the lead wire of the excitation coil are connected to each other in the internal space surrounded by the housing. Therefore, when the above structure that the external terminal
107
is connected to the suction coil
102
by solder
108
on the exterior side of the housing
100
and the terminal housing
106
is employed as the connection structure between the motor side fixed contact point and excitation coil of the electromagnetic switch placed in the internal space surrounded by the housing of the starter, a soldering iron must be placed in the narrow internal space, thereby reducing work efficiency. To improve soldering work efficiency, the lead wire of the excitation coil must be made long. When the lead wire of the excitation coil is made long, vibration resistance deteriorates. Further, solder must be molten for maintenance which requires the disassembly of the starter.
It is an object of the present invention which has been made to solve the above problems to provide a starter having a connection structure between the motor side fixed contact point and excitation coil of an electromagnetic switch stored in the housing, which provides high work efficiency.
According to a first aspect of the present invention, there is provided a starter in which an output shaft connected to a motor and the excitation coil of an electromagnetic switch arranged coaxial to the output shaft are stored in an internal space surrounded by a housing, the contact point portion of the electromagnetic switch is installed in the housing in such a manner that it extends from the inside to the outside of the housing, and the motor side fixed contact point of the contact point portion and the excitation coil are connected to each other in the internal space, characterized in that a terminal is each provided for the motor side fixed contact point and the excitation coil separately, and the terminal of the motor side fixed contact point and the terminal of the excitation coil are of a snap-on type.
According to a second aspect of the present invention, there is provided a starter, wherein the terminal of the motor side fixed contact point is male and the terminal of the excitation coil is female.
According to a third aspect of the present invention, there is provided a starter in which an output shaft connected to a motor and the excitation coil of an electromagnetic switch arranged coaxial to the output shaft are stored in an internal space surrounded by a housing, the contact point portion of the electromagnetic switch is installed in the housing in such a manner that it extends from the inside to the outside of the housing, and the motor side fixed contact point of the contact point portion and the excitation coil are connected to each other in the internal space, characterized in that a terminal is each provided for the motor side fixed contact point and the excitation coil separately, the terminal of the motor side fixed contact point and the terminal of the excitation coil are placed one upon the other, a working hole is formed in the housing at a position corresponding to a position where the terminal of the motor side fixed contact point and the terminal of the excitation coil are placed one upon the other, and the terminal of the motor side fixed contact point and the terminal of the excitation coil which are placed one upon the other are fixed by a screw through the working hole from the outside of the housing.
According to a fourth aspect of the present invention, there is provided a starter, wherein the terminal of the motor side fixed contact point is caulked to the motor side fixed contact point.
The above and other objects, features and advantages of the invention will become more apparent from the following description when taken in conjunction with the accompanying drawings.
REFERENCES:
patent: 4366385 (1982-12-01), Williams
patent: 4907464 (1990-03-01), Isozumi
patent: 4924126 (1990-05-01), Isozumi
patent: 5760487 (1998-06-01), Kimura et al.
patent: 5789821 (1998-08-01), Shiga et al.
patent: 5818118 (1998-10-01), Kimura et al.
patent: 5877575 (1999-03-01), Nara et al.
patent: 0485372A2 (1992-05-01), None
patent: 2488041 (1982-02-01), None
patent: 57-54188 (1982-11-01), None
patent: 10-30534 (1998-02-01), None
Hisamoto Motoi
Kamei Koichiro
Katayama Hidekazu
Kobayashi Takehiro
Kuragaki Akira
Mitsubishi Denki & Kabushiki Kaisha
Ramirez Nestor
Sughrue Mion Zinn Macpeak & Seas, PLLC
Waks Joseph
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