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Solenoid device and starter

A solenoid and bobbin technology, applied in the field of solenoid devices and starters, can solve problems such as large surge voltage and damage to the contacts of relay devices

Inactive Publication Date: 2022-06-07
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] It is well known that in the case of a relay device connected to an inductive load such as a coil and supplies current to the inductive load, a large surge voltage is generated at the contact portion of the relay device due to a sudden change in current when the current is interrupted. , the contact part of the relay device may be damaged

Method used

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  • Solenoid device and starter
  • Solenoid device and starter
  • Solenoid device and starter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0032] figure 1 It is a circuit diagram of a starter for starting an engine including the solenoid device of the first embodiment. The solenoid device 1 is electrically connected to the battery 3 via the relay device 2 . The relay device 1 includes: a coil 5; a plunger 6 driven by the coil 5; a solenoid switch 7; a diode 9 as a surge absorbing element; The coil 5 is wound around the bobbin 10 .

[0033] The solenoid switch 7 includes: a first fixed contact 711, which is connected to the motor 8; a second fixed contact 712, which is connected to the positive pole of the battery 3; and The movable contact 72 is in contact with or away from the first fixed contact 711 and the second fixed contact 712 . The first coil terminal 131 of the coil 5 is connected to the positive electrode of the battery 3 via the relay device 2 , and the second coil terminal 132 is connected to the ground potential portion. In the diode 9 serving as a surge absorbing element, the anode terminal 9 a ...

Embodiment approach 2

[0060] Next, the solenoid device of Embodiment 2 will be described. Figure 7 It is a plan view showing the electrical connection between the surge absorbing element and the connection terminal portion in the solenoid device of Embodiment 2, Figure 8 It is a perspective view which shows the connection terminal part in the solenoid device of Embodiment 2. FIG. In Embodiment 2, the diode serving as the absorbing element is electrically connected to the first connection terminal part of the positive electrode terminal and the second connection terminal part of the negative electrode terminal using the elastic force of the coil spring. It is the same as the solenoid device of Embodiment 1 except for the structure described below.

[0061] exist Figure 7 and Figure 8 Among them, the second extension portion 11b of the positive terminal 11 includes a bent portion 11b2 and a first connection terminal portion 11b3. The bent portion 11b2 is bent from the second extension portion...

Embodiment approach 3

[0069] Next, the solenoid device of Embodiment 3 will be described. Figure 9 It is a plan view showing the electrical connection between the surge absorbing element and the connection terminal portion in the solenoid device according to the third embodiment, Figure 10 It is a perspective view which shows the connection terminal part in the solenoid device of Embodiment 3. FIG. The solenoid device of the third embodiment uses the elastic force of the leaf spring to electrically connect the diode serving as the surge absorbing element to the first connection terminal of the positive terminal and the second connection terminal of the negative terminal. It is the same as the solenoid device of Embodiment 1 except for the structure described below.

[0070] exist Figure 9 and Figure 10 Among them, the second extension portion 11b of the positive terminal 11 includes a bent portion 11b2 and a first connection terminal portion 11b3. The bent portion 11b2 is bent from the seco...

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Abstract

A solenoid device in which a flange portion (102) of a bobbin (10) is provided with a fixed wall (15) and a support wall (14) having a protruding portion (14a), a surge absorbing element (9) is held in a space between the support wall (14) and the fixed wall (15), and the surge absorbing element (9) is pressed by the protruding portion (14a), and a starter including the solenoid device.

Description

technical field [0001] The present application relates to a solenoid device and a starter. Background technique [0002] It is well known that in the case of a relay device that is connected to an inductive load such as a coil and supplies current to the inductive load, a large surge voltage is generated at the contact portion of the relay device due to a sudden change in current when the current is interrupted. , the contact part of the relay device may be damaged. Therefore, for example, a solenoid device of a starter for starting an engine installed in a vehicle such as an automobile generally includes a surge absorbing element connected between two terminals of a coil for suppressing the occurrence of the aforementioned surge voltage. structure in between. [0003] Patent Document 1 discloses an electromagnetic relay including a solenoid device. The solenoid device in the electromagnetic relay disclosed in Patent Document 1 is configured such that a mounting wall of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H47/00H01H50/44
CPCH01H2050/446H01F2007/062H01F27/29H01F27/325H01F5/02H01F5/04F02N11/087H01F7/081
Inventor 小野拓磨龟井光一郎
Owner MITSUBISHI ELECTRIC CORP