JPS59540Y2 - lamp power solenoid - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a solenoid having a built-in lamp for indicating power supply or energization in the housing.

Conventionally, a lamp mounting plate having a contact on the bottom surface is superimposed on the terminal plate of the valve body, and the lamp is energized through the contact to indicate whether or not the terminal on the terminal plate is energized by blinking. (For example, see Japanese Utility Model Publication No. 48-43624).

However, this type of device had the following drawbacks and lacked practicality.

(1) During the circuit from the above terminal board to the solenoid, even if there is a poor contact between the receptacle contact on the valve side and the plug pin on the solenoid side, the above lamp will light up and hide the above bad contact accident. , causing a major accident.

(2) When relocating the entire hydraulic system on-site, connecting and disconnecting the electric wires to the terminal board is often done by the on-site hydraulic technician (
Handled by a machine shop.

In this case, after connecting the electric wires to the terminal plate, the machine shop is reluctant to further restore the lamp mounting plate to proper alignment.

Sometimes I forget to install the small lamp mounting plate.

In that case, the lamp will not light up, so the appearance will be after the accident.

13) When the lamp malfunctions, the transparent cover must be removed and the interior inspected.

At that point, voltage may be applied to the terminals of the terminal board.

In this case, even if the lamp is in a malfunction state, various parts on the lamp mounting plate are in a live state.

If you touch the lamp when you think it is off, you will receive an electric shock.

Furthermore, there is also a device that improves a part of the above structure by connecting a lead wire to the terminal portion of the pump mounting plate (see, for example, Japanese Utility Model Publication No. 47-40723).

However, such a configuration is based on the above-mentioned Utility Model Publication No. 48-43624
As stated in the publication, it requires a lot of effort to connect, and in addition, the lighting device becomes complicated and large.Furthermore, the above-mentioned drawbacks (1) to (3) remain unimproved. There are also some drawbacks.

We have also considered placing the lamp inside the solenoid housing, but even if we simply put the lamp inside the housing, the inside of the housing is small and there is a problem in that it is difficult to mount and fix the lamp.

Therefore, the present invention aims to solve the above-mentioned problems and, in addition, to provide a solenoid for a solenoid valve with a lamp that provides the convenience described below. It has a housing consisting of a concave housing body which is open on the side to be worn, and a bottom plate that can be opened and closed and is attached to the opening of the housing body, and an electromagnet is attached to the inside of the housing. In the solenoid for a solenoid valve, a concave cutout is formed in a part of the side wall in contact with the opening of the housing body, and a lamp holder holding a lamp remains in the cutout. A plug holder is integrally attached to the inside of the housing of the lamp holder to hold a plug pin that protrudes toward the contact on the bulb body side, and the plug pin is inserted into the bottom plate from inside the housing. is passed through and protrudes toward the bulb body side, and a part of the bottom plate is placed over the lamp holder on the bulb body side of the lamp holder, which remains in the above-mentioned cutout. The present invention provides a solenoid for a solenoid valve with a lamp, which is characterized by:

The drawings showing the embodiments of the present application will be described below.

In the solenoid A, 1 is a housing, 2 is a bottom plate facing the opening 1a of the housing 1 and attached detachably, 3 is a gasket, 4 is a fixed core, 5 is a coil, 6 is a lead wire, and 7 is a movable The iron core and 8 indicate the bush pins, respectively.

Next, the lamp portion provided near the opening 1a of the housing 1 will be explained.

Reference numeral 9 denotes a lamp holder, which is made of a transparent material such as resin or glass fiber.

In this lamp holder 9, reference numeral 10 denotes a display window, which is formed thin to allow light to pass through easily, as clearly shown in FIG.

Note that the lamp holder 9 may be formed of a non-transparent material, and only the display window portion 10 may be formed of a translucent material, or may be formed thin so as to be translucent.

11 is a mounting groove, 12 is a printed board, and 13 is a lamp, in which commonly known current/light conversion elements such as neon bulbs, filament bulbs, and light emitting diodes are used.

14 is a protective resistor for the lamp 13, and the lamp 13 and the resistor 14 are connected to the printed board 12 to form a circuit for causing the lamp 13 to emit light.

Reference numeral 15 denotes a connection spring, which is made of a resilient material such as phosphor bronze, and one end of which is in contact with the printed board 12 with low electrical resistance.

16 is a plug pin contact extending from the other end of the connection spring 15.

17 is a filler which prevents horse oil from entering by eliminating the space between the display window 10 and the lamp 13;
This is to prevent poor light transmission.

Note that 18 is a gasket which is inserted so that there is no gap between the housing 1 and the lamp holder 9.

Next, 19 is a plug holder formed integrally with the lamp holder 9, 20 is a plug pin that is inserted into and out of the plug holder 19, and 21 is placed over the holder 19 so as to cover the head 20a of the plug pin 20. The attached presser piece 22 is its fixing pin.

Next, in the valve B, 23 is a valve body, 24 is a valve pin, and 25 is a receptacle housing, which is made of an insulating material such as synthetic resin.

26 is a receptacle contact, and 27 is a terminal screw, which is provided so that a conducting wire can be connected to the contact 26.

2B is a conductor introduction hole drilled in the body 23, 29 is a lid,
30 is a locking screw for fixing solenoid A to valve B.

Next, the assembly of the solenoid A having the above structure will be explained.

First, the lamp 13 and the resistor 14 are attached to the printed board 12, and then the printed board 12 is slid into the mounting groove 11 of the lamp holder 9 as shown by the arrow in FIG.

At this time, the connection spring 15 is also pushed in as shown in FIG.

Next, a filler 17 is filled to fix the lamp 13, resistor 14, etc.

The lead wire 6 is connected to the head 20a of the plug pin 20 by a connecting means such as brazing or welding.

Next, when the plug pin 20 is inserted into the plug holder 19, the contact 16 comes into contact with the plug pin 20, and the connection from the plug pin 20 to the lamp 13 is established.

Next, the presser piece 21 is put on, and the set screw 22 is further tightened to fix the plug pin 20.

Next, assemble an electromagnet with the fixed core 4, coil 5, movable core 7, etc., and install it inside the housing 1.
Attach the lamp holder 9 to the housing 1 through the packing 1B.
The assembly is completed by attaching the base plate 2 to the base plate 2 and covering it with the bottom plate 2.

As described above, in the present invention, the lamp holder 9 is located on the side of the solenoid housing 1, so for example, the entire hydraulic system may need to be rearranged at the site, and the electric wire of the terminal to the contactor 26 on the valve body side must be changed. Even when performing work such as removing or connecting electric wires, the lamp holder is protected from being touched by a worker, and has the practical advantage of not being damaged by the worker.

On the other hand, this has the effect that the operator is not required to perform the two tasks of connecting electric wires and connecting the lamp as in the past, and can omit all of the work related to the lamp.

This is a practical effect that is especially welcome when the operator is a machine shop worker.

Furthermore, in this invention, the function is not only to indicate whether or not the power has reached the contact on the electric valve body side.
Even if there is a poor contact between the contact on the valve body side and the plug pin, the condition is immediately displayed with a blinking display, so even if the power supply is normal, there will be an accident where there is poor continuity between the plug pin and the contact. It also has a practical effect that allows you to discover things immediately.

Furthermore, if the lamp does not light up properly, it is necessary to check this.

In this case, although the housing according to the present invention has an opening on the valve body side, the plug pin must first be removed from the contactor on the valve body side, and then the bottom plate must be opened for inspection.

In this case, even if voltage is applied to the contacts, no voltage is applied to the plug pins.

Therefore, no voltage is applied to the lamp holder, which has the effect of preventing accidents such as electrocution.

Furthermore, the present invention has the advantage that in the above case, when the bottom plate 2 is opened, the lamp holder 9 can be naturally removed from the missing part of the recess, so that it can be easily taken out and inspection work can be performed in a wide area. be able to.

Conversely, when installing the lamp holder 9 after repair, if the lamp holder 9 is left in the above-mentioned missing part and then the opening of the housing is installed with the bottom plate 2, the lamp holder 9 will be recessed. It also has the advantage of being unable to fly out from the defective part and being easily established.

Furthermore, in this case, the lamp holder 9 is arranged to compensate for the missing part of the side wall, and the plug holder 19 is attached and integrated inside the lamp holder, so both occupy the inside of the housing. The volume of the plug holder 19 is extremely small, and there is no need for a structure for fixing the plug holder 19 to the housing, so the housing 1 is narrow.
In addition to the above-mentioned plug holder 19, the lamp holder 9 can also be used together, which is an epoch-making effect.

[Brief explanation of drawings]

The drawings show an embodiment of the present application. Fig. 1 is a plan view showing a state in which the solenoid is attached to a valve, Fig. 2 is a partially cutaway front view of the same, and Fig. 3 is a lamp holder and a plug taken along line III-III. FIG. 4 is a partially broken right side view showing the lamp holder, plug holder and presser piece; FIG. 5 is a bottom view of the same. DESCRIPTION OF SYMBOLS 1... Housing, 2... Bottom plate, 9... Lamp holder, 13... Lamp, 19... Plug holder, 20... Plug pin.

Claims (1)

[Scope of utility model registration request] It has a housing consisting of a concave housing body that is open on the side that faces the valve body, and a bottom plate that can be opened and closed and faces the opening of the housing body, and an electromagnet is installed inside the housing. In a solenoid for a solenoid valve, a part of the side wall in contact with the opening of the housing body has a concave cutout, and a lamp is held in the cutout. A lamp holder is provided, and a plug holder is integrally attached to the inside of the housing of the lamp holder to hold a plug pin that protrudes toward the contact on the bulb body side. The plug pin passes through the bottom plate from inside the housing and protrudes toward the bulb body side.Furthermore, on the bulb body side of the lamp holder that remains in the above-mentioned cutout, a part of the bottom plate is attached to the lamp holder. A solenoid for a solenoid valve with a lamp, characterized in that the covering is arranged in a shape.