JP2006138658A - Energization checker for solenoid valve coil - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simply determine whether a solenoid valve coil is energized or not. <P>SOLUTION: A detector 12 is moved by magnetic force set up by energizing the solenoid valve coil to turn a light source 14 on and off. Whether the valve coil is energized or not can be determined, based on whether the light source 14 is on or off. With the valve coil not energized, a compression spring 40 holds a movable contact 30 and a light source contact 32 at a position of a non-contacting state to keep the light source 14 off. This off-state can show that the valve coil is not energized. With the valve coil energized, the detector 12 is moved away from a case body 10 by magnetic force set up by an electric current through the valve coil. The compression spring 40 is thereby compressed to cause the movable contact 30 to make contact with the source contact 32, thereby turning the light source 14 on. This on-state can show that the valve coil is energized. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an improvement of an energization checker for a solenoid valve coil.

  Conventionally, the energization state of the solenoid valve coil has been checked using a measuring tool or the like. FIG. 5 is a diagram showing a conventional method for checking the energized state (excited or de-energized state) of a solenoid valve coil.

  As shown in FIG. 5, the solenoid valve 50 includes a plunger 52 inside and a solenoid valve coil 54 wound around the solenoid valve 50, and the plunger 52 is moved up and down by a magnetic force generated by energization of the solenoid valve coil 54. The valve is opened and closed.

  In order to check the energization state of the solenoid valve coil 54, for example, the presence or absence of energization, for example, a driver's tip or an iron clip is brought close to the solenoid valve 50, and the presence or absence of energization can be determined by its movement.

  Further, the lead wire 56 of the solenoid valve coil 54 is connected to the clamp meter 58, and the current of the lead wire 56 is measured by the clamp meter 58 to determine the energization state of the solenoid valve coil 54.

  As a reference technique, a checker for a mobile machine is disclosed in Patent Document 1 below.

No. 6-033045

  The method for determining whether or not the solenoid valve coil 54 is energized with a driver tip or an iron clip is such that the driver tip or the like does not move or the motion is weak when the current of the solenoid valve coil 54 is weak. Therefore, there is a problem that it is difficult to determine the presence or absence of energization from the movement.

  In the measurement by the clamp meter 58, if the current value changes or the current is weak due to the characteristics of the electromagnetic valve coil 54, the measured value by the clamp meter 58 falls within the error range, and the electromagnetic valve coil. It may be difficult to determine the energized state of 54.

  When the lead wire 56 is covered with a protective cover or the like, the lead wire 56 cannot be set on the clamp meter 58, and current measurement may not be possible.

  The present invention has been made to solve the above-described problems, and an object thereof is to easily determine whether or not a solenoid valve coil is energized.

  The solenoid valve coil energization checker according to the present invention is a solenoid valve coil energization checker for notifying whether or not the solenoid valve coil is energized, and is provided with a case main body and movable relative to the case main body, and is made of a magnetic material. A detector, a light source provided on the case main body so as to be visible from the outside and notifying whether the coil of the solenoid valve is energized, a slide light provided in the case main body, and a power source of the light source based on the movement of the detector And a compression spring provided between the detector and the movable contact. When the solenoid valve coil is not energized, the compression spring has a movable contact at a position where the light source is turned off. When the solenoid valve coil is energized, the detector moves due to the magnetic force, the compression spring is compressed, and the movable contact moves to the position where the light source is turned on to light the light source. It is characterized in.

  In the energization checker for the solenoid valve coil according to the present invention, the case main body is a pen-type housing, and a battery serving as a power source for the light source is built in the pen-type housing.

  Since the power source of the light source is turned on / off by the magnetic force generated by energization of the solenoid valve coil, the energization state of the solenoid valve coil can be easily determined.

  Hereinafter, modes for carrying out the invention (hereinafter referred to as embodiments) will be described with reference to the drawings.

  FIG. 1 is a diagram showing an overall configuration of an electromagnetic valve coil energization checker according to the present embodiment. As shown in FIG. 1, the energization checker 1 for a solenoid valve coil is roughly divided into a case main body 10, a detector 12 made of a magnetic material, which is provided so as to be movable with respect to the case main body 10, and the case main body 10. The light source 14 is provided so as to be visible from the outside, and notifies whether or not the solenoid valve coil is energized based on the movement of the detector 12. In the present embodiment, the light source 14 is disposed on one end (front end) side of the case main body 10, and the detector 12 is disposed on the other end (rear end) side, and the power source of the light source 14, a lighting circuit, and the like are built in the case main body 10. Is done.

  The detector 12 is moved by the magnetic force generated by energization of the solenoid valve coil, and turns on and off the movable contact. That is, in checking whether the solenoid valve coil is energized or not, as shown in FIG. 1A, in a state where the solenoid valve coil is not energized, the detector 12 does not move from the case body 10 and the light source 14 And the power source 14 is turned off and the light source 14 is turned off. On the other hand, in a state where the solenoid valve coil is energized, as shown in FIG. 1B, the detector 12 is separated from the case body 10 by a magnetic force, whereby the movable contact is turned on, and the light source 14 And the power supply are electrically connected to light up. Thereby, it can be determined whether or not the solenoid valve coil is energized (energized state). Details will be described below.

  2 and 3 are diagrams showing an internal structure of the solenoid valve coil energization checker of the present embodiment, FIG. 2 is a diagram showing a case where a non-energized state of the solenoid valve coil is detected, and FIG. It is a figure which shows the case where the energization state of a solenoid valve coil is detected.

  In the present embodiment, the case main body 10 is composed of a pen-type housing, and has a shape that is easy to grasp and handle with a hand. The case main body 10 has a cylindrical portion 10a in which a power source and the like are accommodated. A light source 14 is disposed at a distal end portion 10b of the cylindrical portion 10a, and a detector is disposed outside a rear end lid 10c of the cylindrical portion 10a. 12 is arranged.

  The distal end portion 10b has a flat dome shape made of a transparent resin such as acrylic resin or polycarbonate. A light source stator 16 is provided on the tip portion 10b side of the cylindrical portion 10a. The light source 14 has a base portion fixed to the light source stator 16 and a light emitting portion located in the tip portion 10b. Therefore, the light source 14 is visible from the outside through the tip portion 10b. In addition, since the user visually recognizes the lighting state of the light source 14 through the tip portion 10b, the tip portion 10b is subjected to a rough surface treatment or a multi-faced cut process or a material of the tip portion 10b so that light can be diffused. It is preferable that a diffusing material such as an aluminum film is contained in the transparent resin, or the resin itself is whitened so that it is easy to see.

  In the present embodiment, the light source 14 is configured by an LED. Moreover, you may comprise with a miniature light bulb etc. instead of LED. The lead wires 18 and 20 of the light source 14 are passed through the light source stator 16 and are electrically connected to a power source described later.

  In the present embodiment, a battery 22 serving as a power source is accommodated in the cylindrical portion 10a. The battery 22 is disposed between the light source stator 16 and the battery stator 24 disposed in the middle of the cylindrical portion 10a, and the battery contact 26 on the light source stator 16 side and the battery contact 28 on the battery stator 24 side. However, the battery 22 is fixedly held in the cylindrical portion 10a in contact with the anode terminal 22a and the cathode terminal 22b of the battery 22. In addition, it is good also as a structure connected to an external power supply, without incorporating a power supply like this embodiment.

  The lead wire 18 of the light source 14 is connected to the battery contact 26 and is electrically connected to the anode terminal 22 a of the battery 22. On the other hand, the lead wire 20 of the light source 14 is connected to a light source contact 32 fixed to the rear of the battery 22 along or inside the light source stator 16 and the cylindrical portion 10a. On the other hand, the battery contact 26 is connected to the movable contact 30 by an electrical lead wire 34. That is, the electric lead wire 34 extends from the electric contact 34 through the inside of the battery stator 24 and is connected to the movable contact 30 in a coil shape that can be extended thereafter. Therefore, when the movable contact 30 slides in the cylindrical portion 10a and contacts the light source contact 32, the cathode terminal 22b of the battery 22 and the lead wire 20 of the light source 14 are conducted, and the light source 14 and the battery 22 are electrically connected. The light source 14 is turned on.

  The movable contact 30 is connected to the detector 12 as described below, and slides in the cylindrical portion 10a following the movement. Hereinafter, the configuration related to this will be described.

  The detector 12 is made of a magnetic material such as iron and has a disk shape as a whole, and is disposed outside the case body 10 so as to face the rear end cover 10c of the cylindrical portion 10a. The shaft 36 extends from the back surface side of the detector 12, that is, the surface facing the rear end cover 10c, and extends through the rear end cover 10c and the light source contact 32 into the cylindrical portion 10a. A piston 38 is slidably disposed with respect to the cylindrical portion 10 a in the middle of the shaft 36, that is, behind the light source contact 32, and the movable contact 30 is fixed to the tip of the shaft 36. A compression spring 40 is disposed between the rear end cover 10 c and the piston 38. The compression spring 40 normally presses the piston 38 against the light source contact 32 side and biases the movable contact 30 to a position where it does not contact the light source contact 32. Here, when the detector 12 moves relative to the case body 10, the compression spring 40 is compressed, and the movable contact 30 slides toward the light source contact 32. Finally, when the movable contact 30 contacts the light source contact 32, the light source 14 and the battery 22 are electrically connected, and the light source 14 is turned on.

  Here, the operation of the detector 12 and the light source 14 when determining whether or not the solenoid valve coil is energized will be described.

  When determining whether the solenoid valve coil is energized, the solenoid valve coil energization checker is brought close to the solenoid valve coil. In a state where the solenoid valve coil is not energized, as shown in FIG. 1, the compression spring 40 biases the piston 38 toward the light source contact 32, and the movable contact 30 and the light source contact 32 are not in contact with each other. Is held in the position. That is, the compression spring 40 urges the movable contact 30 to a position where the light source 14 is turned off. In this state, since the light source 14 is turned off, this turning off indicates that the solenoid valve coil is not energized.

  In a state where the solenoid valve coil is energized, the detector 12 is attracted to the solenoid valve by the magnetic force generated by the current of the solenoid valve coil, as shown in FIG. Accordingly, the detector 12 moves in a direction away from the case body 10. As a result, the piston 38 moves toward the rear end cover 10c against the force of the compression spring 40, and the movable contact 30 slides toward the light source contact 32. Finally, the movable contact 30 moves to a position where it contacts the light source contact 32, that is, a position where the battery 22 of the light source 14 is turned on, and the light source 14 is turned on. The lighting of the light source 14 indicates that the solenoid valve coil is energized.

  As described above, the light source 14 is turned on / off by the action of the compression spring 40 to notify the presence / absence of energization of the solenoid valve coil. Therefore, when the strength of the compression spring 40 is adjusted according to the current value of the solenoid valve coil. Is preferred. In addition, the position of the light source contact 32 can be adjusted.

  Next, the overall flow for determining whether or not the solenoid valve coil is energized will be described. FIG. 4 is a diagram showing how to determine whether or not the solenoid valve coil is energized. In addition, since the structure of a solenoid valve coil is the same as that of what was demonstrated by background art, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  For example, the measurer holds the cylindrical portion 10 a of the electromagnetic valve coil checker and holds it above the electromagnetic valve 50. In a state where no electricity flows through the solenoid valve coil, the detector 12 is in a position in contact with the case body 10 as indicated by a dotted line, and the light source 14 is turned off. By turning off the light source 14, the operator can visually recognize that the solenoid valve coil is not energized. From this state, when the solenoid valve coil electricity is supplied and the solenoid valve coil is energized, the detector 12 moves away from the case body 10 by the magnetic force generated by the current of the solenoid valve coil. In FIG. 4, the detector 12 moves to a position where it contacts the electromagnetic valve 50. As the detector 12 moves, the light source 14 is turned on. By turning on the light source 14, the operator can recognize that the solenoid valve coil is energized.

  As described above, whether or not the solenoid valve coil 54 is energized is determined by moving the detector 12 by the magnetic force generated by the energization to turn the light source 14 on and off. It can be easily determined.

It is a figure which shows the whole structure of the electricity supply checker for solenoid valve coils of embodiment. It is a figure which shows the internal structure of the electricity supply checker for solenoid valve coils of embodiment. It is a figure which shows the internal structure of the electricity supply checker for solenoid valve coils of embodiment. It is a figure which shows the mode of the determination of the presence or absence of electricity supply of a solenoid valve coil. It is a figure which shows the method of checking the electricity supply state of the conventional solenoid valve coil.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 Case main body, 10a Cylindrical part, 10b Tip part, 10c Rear end cover, 12 Detector, 14 Light source, 16 Light source stator, 18, 20 Lead wire, 22 Battery, 24 Battery stator, 26 Battery contact, 28 Battery Contact, 30 movable contact, 32 light source contact, 34 electrical lead, 36 axis, 38 piston, 40 compression spring.

Claims (2)

A solenoid valve coil energization checker for informing whether or not a solenoid valve coil is energized,
The case body,
A detector made of a magnetic material provided to be movable with respect to the case body;
A light source that is provided on the case body so as to be visible from the outside, and that informs the presence or absence of energization of the solenoid valve coil;
A movable contact that is slidably provided in the case body, and that turns on and off an electrical connection with the power source of the light source based on the movement of the detector;
A compression spring provided between the detector and the movable contact;
With
In a state where the solenoid valve coil is not energized, the compression spring urges the movable contact to a position where the light source is turned off. In a state where the solenoid valve coil is energized, the detector is moved by magnetic force and the compression spring is moved. A solenoid valve coil energization checker that compresses and moves the movable contact to a position where the power source of the light source is turned on to light the light source. An energization checker for a solenoid valve coil according to claim 1,
The case body is a pen-type housing,
An energization checker for a solenoid valve coil, wherein a battery serving as a power source for the light source is built in the pen-shaped housing.

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