Starter solenoid switch with improved arrangement of resistor

A technology of electromagnetic switch and resistance, which is used in the starting of the engine, the starting of the motor for the engine, the electromagnetic relay, etc., can solve the problems of increasing the weight of the electromagnetic coil and the electromagnetic switch.

Active Publication Date: 2009-08-26
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this will increase the weight of the solenoid coil and make it difficult to minimize the solenoid switch

Method used

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  • Starter solenoid switch with improved arrangement of resistor
  • Starter solenoid switch with improved arrangement of resistor
  • Starter solenoid switch with improved arrangement of resistor

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0034] figure 1 The overall structure of a starter 1 for starting an internal combustion engine of a motor vehicle is shown, which includes a solenoid switch 10 according to a first embodiment of the invention. figure 2 The electrical circuit of the starter 1 is shown.

[0035] The starter 1 includes: a housing 2 mounted on an engine (not shown), a motor 4 fixed to the housing 2 by a plurality of through bolts 3, a ring gear 5 configured to communicate with the engine (see figure 2 ) in order to transmit the torque generated by the motor 4 to the pinion 6 of the engine (see figure 2 ), a lever 7 configured to move the pinion 6 in the axial direction of the starter 1 to engage or disengage the pinion 6 with the ring gear 5 (see figure 2 ), an electromagnetic switch 8 as a main switch of the starter 1, a resistor 9 that limits current supplied from the battery 12 to the motor 4 during a starting operation, and an electromagnetic switch 10 as a sub switch of the starter 1 a...

no. 2 approach

[0091] This embodiment describes the method of bonding the resistor 9 to the terminal bolts 32 and 33 .

[0092] refer to Image 6 , In this embodiment, the end bolt 32 has a hole 32a having a predetermined depth on its front end face. The terminal bolt 32 also has two grooves 32 b formed on the side surface of the terminal bolt 32 and facing each other in the radial direction of the terminal bolt 32 sandwiching the hole 32 a therebetween. Similarly, the terminal bolt 33 has a hole 33a of predetermined depth formed in its front end face. The terminal bolt 33 also has two grooves 33b formed on the side surface of the terminal bolt 33 and facing each other in the radial direction of the terminal bolt 33, sandwiching the hole 33a therebetween. It should be noted that in Image 6 In , the anterior direction and the posterior direction are introduced for the convenience of explanation.

[0093] The first end 9 a of the resistor 9 is inserted into the hole 32 a of the terminal b...

no. 3 approach

[0101] This embodiment describes another way of incorporating the resistor 9 to the terminal bolts 32 and 33 .

[0102] refer to Figure 7 , in the present embodiment, the end bolt 32 has a protrusion 32c protruding from the front end surface of the end bolt 32 and protruding from the front end surface by a predetermined height. In addition, if Figure 8 As shown, protrusion 32c has a rectangular bottom and tapers towards its top to have a trapezoidal cross-section. Similarly, the terminal bolt 33 has a protrusion 33c protruding from the front end face of the end bolt 33 by a predetermined height from the front end face. In addition, if Figure 8 As shown, protrusion 33c has a rectangular bottom and tapers towards its top to have a trapezoidal cross-section.

[0103] The first end 9a and the second end 9b of the resistor 9 are respectively arranged on the top ends of the protrusions 32c and 33c of the end bolts 32 and 33, and are respectively joined to the top ends of the ...

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PUM

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Abstract

In a solenoid switch according to the invention, a magnetic plate is disposed on one side of a solenoid coil in an axial direction of the solenoid coil. A contact cover is arranged with the magnetic plate interposed between the contact cover and the solenoid coil in the axial direction. First and second fixed contacts are received in the contact cover and respectively electrically connected to first and second terminals that are to be electrically connected to an electric circuit. A resistor is electrically connected between the first and second terminals to limit current flowing through the electric circuit when the first and second fixed contacts are electrically disconnected by a movable contact. The resistor is received in the contact cover and interposed between the magnetic plate and the first and second fixed contacts in the axial direction.

Description

technical field [0001] The present invention generally relates to an electromagnetic switch (or solenoid switch) for controlling the power supply to a starter motor. In particular, the present invention relates to an electromagnetic switch having an improved arrangement of resistors for limiting the current supplied to a starter motor. Background technique [0002] Japanese Patent No. 3767550, whose English counterpart is US Patent No. 6,923,152 B2, discloses a starter for starting an internal combustion engine, which includes a motor and an electromagnetic switch for driving the motor in two stages. [0003] More specifically, the electromagnetic switch includes a pair of main contacts, a pair of auxiliary contacts and a resistor. The main contact is connected in parallel with the auxiliary contact in a starter circuit that supplies electric power from the battery to the motor. A resistor is connected in series with the secondary contact in the circuit. [0004] During a...

Claims

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Application Information

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IPC IPC(8): F02N11/00F02N11/08H01H50/16H01H50/54
Inventor 新美正巳
Owner DENSO CORP
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