JPH0239091Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a fixing structure for wiring for an indicator light of a solenoid valve.

[Background technology] In a solenoid valve that switches the flow direction of fluid such as air and the opening and closing of a flow path, the operating status of the solenoid valve can be visually confirmed from the outside using an operation indicator such as a light emitting diode connected to the solenoid. I'm starting to be able to do it. Here, depending on the mounting direction of the solenoid valve, it may be desirable to arrange an indicator light on the front side of the solenoid valve.

By the way, when installing an indicator light on the front side of a solenoid valve based on the above request, the lead wire must be connected from the circuit section inside the terminal box installed on the back side to the inside of the valve body, that is, along the back side of the cap. It is necessary to route the wiring and establish electrical continuity with the indicator light on the front.

However, when the lead wire is routed inside the valve body as described above, if the lead wire is not secured sufficiently, the lead wire will get in the way and make it difficult to properly assemble the valve body. In addition, the lead wire may become an obstacle to the operation of the plunger during operation, and stable operation may not be possible.

Regarding this point, it is possible to securely fix the lead wire by attaching a separate lead wire fixing member inside the valve body or on the back side of the cap, but this increases the number of parts and manufacturing costs. be.

[Purpose of the invention] The purpose of the invention is to provide a structure for fixing the wiring for the indicator light of a solenoid valve, which securely fixes the wiring for the indicator light at low cost, has good assemblability, and has high operational reliability. It is in.

[Summary of the invention] This invention is a solenoid valve with a terminal box on the back and an indicator light on the front. By fixing the indicator light wiring to the solenoid valve, the indicator light wiring can be securely fixed without the need for a separate fixing member, and this allows for easy assembly and highly reliable operation. It provides structure.

[Example] Fig. 1 is a view of the cap of a solenoid valve according to an embodiment of the present invention seen from the back side, Fig. 2 is an overall front view partially shown in section of the solenoid valve according to the present invention, and Fig. FIG. 3 is an enlarged partial sectional view showing a state in which the lead wiring is fixed by a manual operation button.

The solenoid valve 1 in this embodiment consists of a solenoid part 2 which is an electromagnetic force generating part and a switching valve part 3 which switches fluid.A solenoid coil 5 is wound around the inside of a frame 4 of the solenoid part 2. A bobbin 6 is attached. This bobbin 6 has a hole 7 formed along its central axis.
Inside there is a cylindrical plunger 8 and a fixed iron core 9.
The plunger 8 is attached so as to be movable in the length direction of the hole 7.

A space 8a is formed inside the plunger 8, and a spring 10 is accommodated in the space. A spring stopper 11 having approximately the same diameter as the plunger is attached to the outer end of the plunger 8. The plunger 8 also has a plunger pin 12 having a nail-shaped pin head 12a on one end side.
is attached in a state where it is biased and locked in the direction of the fixed iron core 9 by the spring 10 described above.

The plunger pin 12 is inserted into a hole 9a formed along the central axis of the fixed iron core 9 so as to be freely movable in the length direction, and the other end of the plunger pin 12 is inserted into the inside of the switching valve section 3. This plunger pin 12 is brought into contact with a spool (not shown), etc.
The fluid is switched within the switching valve section 3 by the displacement operation.

On the other hand, a cap 13 is attached to the end of the solenoid section 2 opposite to the switching valve section 3 so as to cover the outer end of the plunger 8, and a manual operation button 14 is attached to the center of the cap 13. ing.

In this embodiment, the manual operation button 14 is made of synthetic rubber or the like, and has flange portions 16 and 17 having a two-tiered upper and lower structure around a pressing portion 15 that is approximately disk-shaped.
was formed. Among the two upper and lower flange parts 16 and 17, the lower flange part 17
As shown in FIG. 1, a lead wire fixing portion 17a extending horizontally is formed in a part thereof. The manual operation button 14 is attached to the cap 13 by fixing a part of the cap 13 between the flanges 16 and 17, and the lead wiring fixing part 17a.
Only the part where is formed is the lead wiring fixing part 17a.
A space is formed between the cap 13 and the cap 13, and a part of the lead wiring 18 is housed in the space. Note that one end of the lead wire 18 is connected to an operation indicator light 19 made of a light emitting diode (LED) etc. attached to the front surface of the cap 13, and the other end side is attached to the back side of the solenoid valve 1. It is connected to an indicator light lighting circuit (not shown) inside the terminal box 20.

The cap 13 and the solenoid section 2 are fixed to the switching valve section 3 by an assembly screw 21 passing through these members.

As described above, according to this embodiment, the lead wire 18 from the terminal box 20 on the back side of the solenoid valve 1 is fixed to the back side of the cap 13 by the lead wire fixing part 17a, which is the flange part of the manual operation button 14. Therefore, the lead wiring 18 can be securely fixed without using a separate fixing member. Therefore, when assembling the electromagnetic valve 1, the lead wiring 18 does not get in the way and the assembly can be carried out smoothly.Furthermore, since the lead wiring 18 can be securely fixed, even during operation. The lead wiring 18 does not hinder the movement of the plunger 8, and high operational reliability can be maintained.

Although the present invention has been specifically explained above based on examples, the present invention is not limited to the above-mentioned examples, and can be modified without departing from the gist thereof.

For example, although the electrical lead wiring 18 has been described as the wiring for the indicator light, the present invention is not limited to this, and wiring such as an optical fiber cable for transmitting light from the light emitting section to the display section may be used.

[Effects] (1) In a solenoid valve with the terminal box on the back and the indicator light on the front, the wiring from the terminal box to the indicator light is fixed to the back side of the cap using the flange of the manual operation button. The indicator light wiring can be reliably fixed without requiring a separate fixing member.

(2) According to (1) above, it is possible to provide a solenoid valve that is easy to assemble without the indicator light wiring getting in the way.

(3) According to the above (1), it is possible to provide a solenoid valve with high operational reliability without the indicator light wiring getting in the way.

(4) According to the above (1), there is no need for a separate member for fixing the indicator light wiring, so miniaturization and cost reduction can be achieved.

[Brief explanation of the drawing]

Fig. 1 is a view of the cap of a solenoid valve according to an embodiment of the present invention as seen from the back side, Fig. 2 is an overall front view showing a partial cross section of the solenoid valve of this embodiment, and Fig. 3 is a manual operation FIG. 3 is an enlarged partial cross-sectional view showing a state in which the lead wiring is fixed with a button. 1...Solenoid valve, 2...Solenoid part, 3...Switching valve part, 8...Plunger, 9...Fixed iron core, 1
2... Plunger pin, 13... Cap, 14
...Manual operation button, 15...Press portion, 16,
17...Flange part, 17a...Lead wiring fixing part, 18...Lead wiring, 19...Operation indicator light,
20...Terminal box, 21...Assembling screw.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A solenoid valve with a terminal box on the back and an indicator light on the front, in which the wiring from the terminal box to the indicator light is capped by the flange of the manual operation button. A fixed structure for the wiring for the indicator light of the solenoid valve, which is fixed to the back side of the solenoid valve. (2) A fixing structure for wiring for an indicator light of a solenoid valve according to claim 1 of the utility model registration, characterized in that the indicator light is a light emitting diode.