CN113851353A - Electromagnetic switch for starter - Google Patents

Electromagnetic switch for starter Download PDF

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Publication number
CN113851353A
CN113851353A CN202110666992.1A CN202110666992A CN113851353A CN 113851353 A CN113851353 A CN 113851353A CN 202110666992 A CN202110666992 A CN 202110666992A CN 113851353 A CN113851353 A CN 113851353A
Authority
CN
China
Prior art keywords
side terminal
motor
starter
switch
battery
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202110666992.1A
Other languages
Chinese (zh)
Inventor
山根靖之
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of CN113851353A publication Critical patent/CN113851353A/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
    • F02N15/04—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears
    • F02N15/06—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the toothed gears being moved by axial displacement
    • F02N15/067—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the toothed gears being moved by axial displacement the starter comprising an electro-magnetically actuated lever
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F02N11/087—Details of the switching means in starting circuits, e.g. relays or electronic switches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F02N15/006—Assembling or mounting of starting devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F02N11/087—Details of the switching means in starting circuits, e.g. relays or electronic switches
    • F02N2011/0874—Details of the switching means in starting circuits, e.g. relays or electronic switches characterised by said switch being an electronic switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H2050/028—Means to improve the overall withstanding voltage, e.g. creepage distances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/026—Details concerning isolation between driving and switching circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/14—Terminal arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/44—Magnetic coils or windings
    • H01H50/443—Connections to coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
    • H01H51/065—Relays having a pair of normally open contacts rigidly fixed to a magnetic core movable along the axis of a solenoid, e.g. relays for starting automobiles

Abstract

A partition wall (70) formed on the outer surface of a switch cover (7) in a protruding manner in the axial direction is arranged between a battery-side terminal (8) and a motor-side terminal (11), a motor-side terminal outlet (18) and a solenoid-side terminal outlet (17), and both end portions (70a, 70b) of the wall surface extend to the edge portion in the radial direction of the switch cover (7), so that the creepage distance between the battery-side terminal (8) and other terminals (11, 15) due to the wall surface effect of the partition wall (70) can be ensured, and the formation of a leakage circuit between the terminal-side terminals can be suppressed even if the switch cover (7) is immersed in water.

Description

Electromagnetic switch for starter
Technical Field
The present application relates to an electromagnetic switch for a starter.
Background
In general, a starter for starting an engine includes: a starter motor generating a rotational force; a reduction gear using a planetary gear that reduces and outputs rotation of a rotor of the starter motor; the overrunning clutch is arranged on an output shaft of the planetary speed reducer; a pinion gear provided to be slidable on the output shaft integrally with the overrunning clutch; and a switching lever that slides the overrunning clutch and the pinion gear on the output shaft in the axial direction.
Further, a starter electromagnetic switch is integrally provided at the starter. The electromagnetic switch for a starter includes: an electromagnetic coil that applies force when a key switch of a vehicle is turned on; a plunger that moves by being driven by electromagnetic force of the electromagnetic switch when the electromagnetic switch is energized, and that moves an overrunning clutch and a pinion toward a ring gear of an engine via a switching lever; a pair of fixed contacts connected to the battery and the starter motor, respectively, and separated from each other; and a movable contact point which is driven by the movement of the plunger to contact the pair of fixed contact points, thereby closing the pair of fixed contact points.
The pair of fixed contacts and the movable contact are housed inside a switch cover made of an insulating material. The pair of fixed contacts are connected to a battery-side terminal that penetrates the switch cover from the inside toward the outside of the switch cover, and a motor-side terminal that also penetrates the switch cover from the inside toward the outside of the switch cover. The switch cover is configured to include a partition wall on an outer surface of a closed end in an axial direction thereof, the partition wall being disposed between the battery-side terminal and the motor-side terminal, and a creepage distance between the battery-side terminal and the motor-side terminal being secured by the partition wall (see, for example, patent document 1).
In the conventional electromagnetic switch for a starter, the battery-side terminal 8 and the motor-side terminal 11 are fixed to the switch cover 7 by penetrating a closed portion, which is one end portion in the axial direction of the switch cover 7 formed in a cylindrical shape. The battery terminal 9 connected to the battery cable 10 and the motor terminal 13 connected to the motor lead 14 are connected to the battery side terminal 8 and the motor side terminal 11, respectively, outside the switch cover 7. The battery side fixed contact 8a and the motor side fixed contact 11a are fixed and electrically connected to the end of the battery side terminal 8 and the end of the motor side terminal 11, respectively, inside the switch cover 7.
Here, the partition wall 70 formed at the outer surface of the closed end of the switch cover 7 is located between the battery-side terminal 8 and the motor-side terminal 11, ensuring a creepage distance between the battery-side terminal 8 and the motor-side terminal 11.
Documents of the prior art
Patent document
Patent document 1: japanese patent application laid-open No. 2010-101241
However, in the conventional electromagnetic switch for a starter according to patent document 1, the partition wall 70 of the switch cover 7 is disposed only between the battery-side terminal 8 and the motor-side terminal 11, and there is no partition wall between the electromagnetic-coil-side terminal outlet port portion 17 and the motor-side terminal outlet port portion 18 and the battery-side terminal 8, and therefore, there is a problem that a leak circuit is easily formed between the battery-side terminal 8 and each electromagnetic-coil outlet port portion in a severe environment such as intermittent flooding for a long time.
Disclosure of Invention
The present application discloses a technique for solving the above-described problems, and an object thereof is to provide an electromagnetic switch for a starter, which can prevent a problem caused by a leak circuit formed between a battery side terminal and a ground portion even when the switch is immersed in water.
The electromagnetic switch for a starter disclosed in the present application is characterized by comprising: an electromagnetic coil that applies a force by an ON operation of a key switch; a plunger driven by the electromagnetic coil to move in a predetermined direction; a pair of fixed contacts configured to be separated from each other; a movable contact that moves based on movement of the plunger to close between a pair of the fixed contacts; a switch cover that accommodates the pair of fixed contacts and the movable contact therein; a battery-side terminal connected to one of the pair of fixed contacts and disposed outside the switch cover; a motor-side terminal connected to the other of the pair of fixed contacts and arranged outside the switch cover, and a motor-side terminal outlet connected to the motor-side terminal; an electromagnetic coil side terminal connected to the electromagnetic coil and disposed outside the switch cover, and an electromagnetic coil side terminal outlet connected to the electromagnetic coil side terminal; and a partition wall protruding between the battery-side terminal and the motor-side terminal, the motor-side terminal outlet port, the electromagnetic coil-side terminal, and the electromagnetic coil-side terminal outlet port on an outer surface of the switch case, and extending to an edge portion in a radial direction of the switch case.
According to the electromagnetic switch for a starter disclosed in the present application, since the partition wall is provided on the outer surface of the switch case, the partition wall protrudes between the battery-side terminal and the motor-side terminal and the electromagnetic coil-side terminal outlet portion, and extends to the edge portion in the radial direction of the switch case, even if the switch case is immersed in water, the partition wall can prevent a malfunction of the starter, such as a malfunction of the starter caused by a leak circuit formed between the battery-side terminal and the motor-side terminal.
Drawings
Fig. 1 is a schematic cross-sectional view showing a structure of a starter equipped with an electromagnetic switch for a starter according to embodiment 1.
Fig. 2 is a front view of a terminal portion of a starter of an electromagnetic switch for a starter according to embodiment 1.
Fig. 3 is a schematic circuit diagram of a starter using the electromagnetic switch for a starter according to embodiment 1.
Fig. 4 is a front view of a terminal portion of an electromagnetic switch for a starter according to embodiment 2.
Fig. 5 is a rear view of a terminal portion of an electromagnetic switch for a starter according to embodiment 2.
Fig. 6 is a rear view of a terminal portion of an electromagnetic switch for a starter according to embodiment 3.
Fig. 7 is a sectional view of a section along the line B-B of fig. 6, as viewed from the direction of the arrow B.
(symbol description)
100 a starter;
101 a front bracket;
1, gear ring;
2 a pinion gear;
4 a starter motor;
5 a speed reduction part;
6 a contact chamber;
7, a switch cover;
an 8-battery-side terminal;
8a battery-side fixed contact;
9 a battery terminal;
10 a battery cable;
11 motor side terminal;
11a motor-side fixed contact;
12 a movable contact;
13 motor terminals;
14 motor leads;
15 an electromagnetic coil side terminal;
16 a switch lever;
a 161 fulcrum portion;
17 an electromagnetic coil side terminal outlet portion;
an 18-motor-side terminal outlet port portion;
19 a connector;
200 electromagnetic switch for starter;
25 an overrunning clutch;
31 a plunger;
32 a suction coil;
33 a hollow frame body;
34 holding the coil;
35 a core part;
351 eaves-shaped portion;
352 a cylindrical portion;
36 a frame;
37 a return spring;
38 rods;
40 contact pressure spring;
51 an output shaft;
70a partition wall;
70a, 70b wall surface;
300 batteries;
a 400 key switch;
500 starter relay;
501 relay coil;
502. 503 relay fixed contacts;
504 relay movable contacts.
Detailed Description
Embodiment mode 1
Fig. 1 is a schematic cross-sectional view showing a structure of a starter equipped with an electromagnetic switch for a starter according to embodiment 1. Fig. 2 is a front view of a terminal portion of a starter of an electromagnetic switch for a starter according to embodiment 1. Fig. 3 is a schematic circuit diagram of a starter using the electromagnetic switch for a starter according to embodiment 1.
Next, a structure of a starter equipped with the electromagnetic switch for a starter according to embodiment 1 will be described with reference to fig. 1.
The starter 100 includes: a starter motor 4, the starter motor 4 generating a rotational force; a speed reduction unit 5, the speed reduction unit 5 being configured by a planetary gear mechanism that reduces and outputs rotation of a rotor of the starter motor 4; an overrunning clutch 25 spline-coupled to the output shaft 51 of the reduction unit 5 and provided to be movable in the axial direction of the output shaft 51; and a pinion gear 2 provided so as to be slidable on the output shaft 51 in the axial direction thereof integrally with the overrunning clutch 25 and to be capable of meshing with the ring gear 1 of the engine. A later-described electromagnetic switch 200 for a starter is integrally fixed to the front bracket 101 of the starter 100.
The switching lever 16 is attached to be rotatable about a fulcrum 161 in the middle thereof, and has one end 162 engaged with the overrunning clutch 25 and the other end 163 connected to one end of the plunger 31 of the starter electromagnetic switch 200. The switching lever 16 and the overrunning clutch 25 are disposed in the front bracket 101.
Next, the starter electromagnetic switch 200 will be described. The starter electromagnetic switch 200 is located above the outer peripheral portions of the starter motor 4 and the speed reducer 5, and is disposed such that the central axis thereof is substantially parallel to the axis of the output shaft 51 of the starter 100. The suction coil 32 formed in a cylindrical shape is fixed to an outer peripheral portion of a hollow frame 33 made of an insulator. The holding coil 34 formed in a cylindrical shape is disposed concentrically with the attraction coil 32 on the outer peripheral portion of the attraction coil 32.
The core 35 formed of a magnetic material includes an eave portion 351 and a cylindrical portion 352, the eave portion 351 faces one end portion in the axial direction of the attraction coil 32 and the holding coil 34 with the hollow frame 33 interposed therebetween, and the cylindrical portion 352 is inserted into the hollow portion of the hollow frame 33. The frame 36 surrounding the outer periphery of the holding coil 34 is made of a magnetic material, and one end portion in the axial direction thereof is bent inward in the radial direction, surrounds the outer peripheral edge portion of the overhang portion 351 of the core 35, and integrally fixes the core 35 together with the hollow frame 33. The frame 36 constitutes a part of the magnetic circuit of the attraction coil 32 and the holding coil 34 together with the core 35. The plunger 31 formed of a magnetic body is provided so as to be slidable in the axial direction in the hollow portion of the hollow frame 33, and the attraction coil 32 and the holding coil 34 are attracted toward the core portion 35 by the electromagnetic force and move when excited.
A return spring 37 made of a compression spring is disposed between the other end portion in the axial direction of the frame 36 and one end portion in the axial direction of the plunger 31, and biases the plunger 31 in a direction to separate from the core 35 at all times. The movable contact 12 is fixed to the other end portion in the axial direction of the plunger, is attached to a rod 38 that is movable in the axial direction, and is always biased in a direction of separating from the plunger 31 by a contact pressure spring 40 made of a compression spring.
One axial end of the switch cover 7 formed of an insulator such as synthetic resin is open, and the other axial end is closed. The open annular end surface of the switch cover 7 is in contact with one axial end of the frame 36 and is fixed to the frame 36. The movable contact 12 is housed inside the switch cover 7 fixed to the frame 36.
As shown in fig. 1 and 2, the battery-side terminal 8 and the motor-side terminal 11 each axially penetrate the closed end of the switch cover 7 and are fixed to the switch cover 7. When the starter 100 is mounted on the vehicle, the battery-side terminal 8 is positioned vertically above the motor-side terminal 11. The battery side fixed contact 8a and the motor side fixed contact 11a are fixed and electrically connected to an end of the battery side terminal 8 and an end of the motor side terminal 11, respectively, inside the switch cover 7. The battery terminal 9 connected to the battery cable 10 and the motor terminal 13 connected to the motor lead 14 are connected to the battery side terminal 8 and the motor side terminal 11, respectively, outside the switch cover 7.
The partition wall 70 formed on the outer surface of the closed end of the switch cover 7 is for securing creepage distances between the battery-side terminal 8 and the motor-side terminal 11, the motor-side terminal outlet port 18, and the solenoid-side terminal outlet port 17, and the partition wall 70 is projected in the direction of the axis of the switch cover 7 and is arranged between the battery-side terminal 8 and the motor-side terminal 11, the motor-side terminal outlet port 18, and the solenoid-side terminal outlet port 17 connected to the solenoid-side terminal 15. Both end portions 70a, 70b of the wall surface of the partition wall 70 extend to the edge in the radial direction of the switch cover 7.
Next, as shown in fig. 3, which is a schematic circuit diagram of the starter 100, the battery-side fixed contact 8a of the electromagnetic switch 200 for a starter is connected to the positive-side terminal of the battery 300 mounted on the vehicle. The starter relay 500 includes a relay coil 501, and one end of the relay coil 501 is connected to the positive-side terminal of the battery 300 via the key switch 400. Further, the starter relay 500 includes a pair of relay fixed contacts 502, 503 and a relay movable contact 504, and the relay movable contact 504 is moved by being excited by a relay coil 501 so as to be brought into contact with the pair of relay fixed contacts 502, 503.
One relay fixed contact 502 of the starter relay 500 is connected to the battery side fixed contact 8a of the electromagnetic switch for starter 200, and the other relay fixed contact 503 is connected to one end of the attraction coil 32 and one end of the holding coil 34 of the electromagnetic switch for motor 200. The motor-side fixed contact 11a of the electromagnetic switch 200 for a starter is connected to the other end of the attraction coil 32 and one end of the armature coil of the starter motor 4.
In fig. 1 and 3, when the key switch 400 is turned on, the relay coil 501 in the starter relay 500 is excited, whereby the relay movable contact 504 is moved to contact the pair of relay fixed contacts 502 and 503, and the pair of relay fixed contacts 502 and 503 are closed. As a result, current flows to the attraction coil 32 and the holding coil 34 in the starter electromagnetic switch 200, a magnetic circuit is formed by the attraction coil 32 and the holding coil 34 constituting the electromagnetic coil, the frame 36, the eaves portion 351 and the cylindrical portion 352 of the core portion 35, and the plunger 31 is attracted toward the core portion 35. Thereby, the plunger 31 moves toward the core 35 against the urging force of the return spring 37.
The switching lever 16 rotates counterclockwise in fig. 1 about the fulcrum 161 as a rotation center in accordance with the movement of the plunger 31. By the rotation of the switching lever 16, one end 162 thereof comes into contact with the overrunning clutch 25, and the overrunning clutch 25 and the pinion 2 are moved in the right direction in fig. 1. Thereby, the end face of the pinion 2 abuts against the end face of the ring gear 1, and at this time, the movement of the pinion 2 is temporarily stopped. On the other hand, since a small current is caused to flow to the armature coil of the starter motor 4 via the relay fixed contact 502, the relay movable contact 504, the relay fixed contact 503 of the starter relay 500 and the attraction coil 32 of the electromagnetic switch for starter 200, and the starter motor 4 is rotated at a low speed, the rotation of the starter motor 4 is transmitted to the pinion gear 2 via the speed reduction unit 5 and the overrunning clutch 25, and the pinion gear 2 is rotated.
In this way, the pinion 2 is rotated, and the pinion 2 is meshed with the ring gear 1. At the time when the pinion 2 is substantially meshed with the ring gear 1, the movable contact 12 is closed between the battery side fixed contact 8a and the motor side fixed contact 11a, which are a pair of fixed contacts of the electromagnetic switch 200 for a starter, a large current flows from the battery 300 to the starter motor 4, the high-speed rotation of the starter motor 4 is transmitted to the pinion 2 via the speed reduction unit 5 and the overrunning clutch 25, and the pinion 2 rotates at high speed, so that the engine is cranked via the ring gear 1.
As described above, the partition wall 70 provided in the switch case 7 is provided so as to protrude between the battery-side terminal 8 and the motor-side terminal 11, the solenoid-side terminal outlet port 17, and the motor-side terminal outlet port 18. Further, since the both end portions 70a, 70b of the wall surface of the partition wall 70 are extended to the edge portion in the radial direction of the switch cover 7 and the width of the both end portions 70a, 70b of the wall surface is set to be larger than the distance between the solenoid-side terminal outlet port portion 17 and the motor-side terminal outlet port portion 18, the creepage distance to the battery-side terminal 8 can be secured, and therefore, even when the terminal portion of the electromagnetic switch 200 for a starter is immersed in water, the formation of a leak circuit with the battery-side terminal 8 can be suppressed.
As described above, in the electromagnetic switch for a starter according to embodiment 1, by providing the partition wall having the wall surface extending to the edge of the switch cover between the battery-side terminal and the other terminal including the motor-side terminal, the creepage distance between the battery-side terminal and the other terminal due to the wall surface effect of the partition wall can be secured, and even if the terminal portion of the electromagnetic switch for a starter is immersed in water, the formation of the leak circuit between the battery-side terminal and the other terminal can be suppressed, and the occurrence of the malfunction such as the malfunction of the starter can be prevented.
Embodiment mode 2
Fig. 4 is a front view of a terminal portion of a starter of an electromagnetic switch for a starter according to embodiment 2. Fig. 5 is a rear view of the terminal portion of fig. 4 as viewed from the contact chamber side on the back side. A point of difference from the front view of the terminal portion of the electromagnetic switch for a starter according to embodiment 1 of fig. 2 is that a connector 19 for connecting the motor-side terminal 11 and the motor-side terminal outlet portion 18 is located in the contact chamber 6 inside the switch cover 7.
Next, the structure of the electromagnetic switch for a starter according to embodiment 2 will be described. As shown in fig. 4 and 5, the connector 19 connecting the motor-side terminal 11 and the motor-side terminal outlet portion 18 is provided so as to be positioned in the contact chamber 6 of the switch cover 7. By positioning the connector 19 in the contact chamber 6, even if the outer surface of the switch cover 7 is soaked with water, the formation of a leak circuit between the battery-side terminal 8 and the connector 19 can be suppressed, and occurrence of a trouble can be prevented.
In this way, in the electromagnetic switch for a starter according to embodiment 2, by further providing a connector for connecting the motor-side terminal and the motor-side terminal lead-out port portion in the contact chamber of the switch case, it is possible to suppress the formation of a leak circuit between the motor-side terminal and the battery-side terminal even if the terminal portion of the electromagnetic switch for a starter is immersed in water while securing the creepage distance between the battery-side terminal and the other terminal due to the wall surface effect of the partition wall according to embodiment 1, and it is possible to prevent the occurrence of a malfunction.
Embodiment 3
Fig. 6 is a rear view of a terminal portion of an electromagnetic switch for a starter according to embodiment 3. Fig. 7 is a sectional view of a section along the line B-B of fig. 6, as viewed from the direction of the arrow B. The present invention is different from the terminal portion of the electromagnetic switch for a starter according to embodiment 1 in that a connector 19 for connecting the motor-side terminal 11 and the motor-side terminal outlet portion 18 is formed integrally with the switch cover 7 and is not exposed on the outer surface.
Next, the structure of the electromagnetic switch for a starter according to embodiment 3 will be described. In fig. 6 and 7, the connector 19 connecting the motor-side terminal 11 and the motor-side terminal outlet portion 18 is configured to be formed integrally with the switch cover 7 without being exposed on the outer surface. In addition, the contact chamber 6 is configured to be separated from the motor-side terminal lead-out portion 18. Thus, even if the outer surface of the switch cover 7 is immersed in water, the formation of a leak circuit between the battery-side terminal 8 and the connector 19 can be suppressed, and occurrence of a failure can be prevented.
In this way, in the electromagnetic switch for a starter according to embodiment 3, by further configuring the connector connecting the motor-side terminal and the motor-side terminal coil lead-out portion so as to be formed integrally with the switch case without being exposed on the outer surface and so as to have the contact chamber separated from the motor-side terminal coil lead-out portion, the creeping distance between the battery-side terminal and the other terminals due to the wall surface effect of the partition wall according to embodiment 1 is ensured, and even if the terminal portion of the electromagnetic switch for a starter is immersed in water, the formation of the leak circuit between the motor-side terminal and the battery-side terminal can be suppressed, and the occurrence of a malfunction can be prevented.
In addition, although the present application describes various exemplary embodiments and examples, various features, modes, and functions described in one or more embodiments are not limited to the application to specific embodiments, and can be applied to the embodiments alone or in various combinations.
Therefore, numerous modifications not illustrated are contemplated within the technical scope disclosed in the present specification. For example, the case where at least one component is modified, added, or omitted is included, and the case where at least one component is extracted and combined with the components of the other embodiments is also included.
In the drawings, the same reference numerals denote the same or corresponding parts.

Claims (3)

1. An electromagnetic switch for a starter, comprising:
an electromagnetic coil that applies a force by an ON operation of a key switch;
a plunger driven by the electromagnetic coil to move in a predetermined direction;
a pair of fixed contacts configured to be separated from each other;
a movable contact that moves based on movement of the plunger to close between a pair of the fixed contacts;
a switch cover that accommodates the pair of fixed contacts and the movable contact therein;
a battery-side terminal connected to one of the pair of fixed contacts and disposed outside the switch cover;
a motor-side terminal connected to the other of the pair of fixed contacts and arranged outside the switch cover, and a motor-side terminal outlet connected to the motor-side terminal;
an electromagnetic coil side terminal connected to the electromagnetic coil and disposed outside the switch cover, and an electromagnetic coil side terminal outlet connected to the electromagnetic coil side terminal; and
a partition wall protruding between the battery-side terminal and the motor-side terminal, the motor-side terminal outlet port, the electromagnetic coil-side terminal, and the electromagnetic coil-side terminal outlet port on an outer surface of the switch cover, and extending to an edge portion in a radial direction of the switch cover.
2. The electromagnetic switch for a starter according to claim 1,
the connector for connecting the motor side terminal and the motor side terminal outlet is disposed in the contact chamber inside the switch cover.
3. The electromagnetic switch for a starter according to claim 1,
the connector connecting the motor-side terminal and the motor-side terminal outlet portion is formed by being integrally molded with the switch cover, and the contact chamber inside the switch cover is separated from the motor-side terminal outlet portion.
CN202110666992.1A 2020-06-25 2021-06-16 Electromagnetic switch for starter Withdrawn CN113851353A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020109268A JP6972240B1 (en) 2020-06-25 2020-06-25 Electromagnetic switch for starter
JP2020-109268 2020-06-25

Publications (1)

Publication Number Publication Date
CN113851353A true CN113851353A (en) 2021-12-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110666992.1A Withdrawn CN113851353A (en) 2020-06-25 2021-06-16 Electromagnetic switch for starter

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JP (1) JP6972240B1 (en)
CN (1) CN113851353A (en)
DE (1) DE102021204287B4 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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JP4161066B2 (en) 2002-07-16 2008-10-08 三菱電機株式会社 Auxiliary rotary starter
JP4772098B2 (en) 2008-10-23 2011-09-14 三菱電機株式会社 Electromagnetic switch for starter
WO2017187493A1 (en) 2016-04-26 2017-11-02 三菱電機株式会社 Electromagnetic switch device for starter

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Application publication date: 20211228