JPH0453209A - Electromagnet - Google Patents

Abstract

PURPOSE:To facilitate the assembling of the title electromagnet by a method wherein a pipe member C is attached to a valve main body B, a coil body D is placed thereon, and a cap E is attached to the pipe body C. CONSTITUTION:First, a pipe body C is attached in the state wherein the pipe body C, a coil body D and a cap E are separated with one another. In this case, the movable core 24 in the pipe body is prevented by a stopper 20 from unexpected coming off from the pipe body. Then, the coil body D is attached to the circumference of the pipe body C, and then the cap E is attached to the pipe body C. The aperture part of the pipe body C is closed by the above-mentioned cap E, and at the same time, the coming off of the coil body D is prevented. In an assembled electromagnet, when a push-pin is pushed, the movable core 24 is moved by the push-pin 46. The push pin 46 is returned by the return spring provided between the stopper 20, used as a spring seat, and the push-pin 46.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electromagnet having a structure in which a movable iron core is housed in the width of a vibrator that guides the movement of the electromagnet in its forward and backward directions.

[Conventional technology]

It has a pipe body with a hollow part inside which allows a movable iron core to freely move back and forth, and at one end of the vibrator body,
A handle 44 is provided to connect the valve body to the valve body, and a ring-shaped coil body is disposed around the pipe body so as to be freely inserted and removed, and a movable iron core is reciprocated in the hollow part 1- in the pipe body It is movably provided at the other end of the pipe body, and is attached to the other end of the pipe body to close the opening thereof and to prevent the coil body from being removed from the periphery of the pipe body. An electromagnet is known that is removably covered with a cap formed to have a diameter larger than that of the magnet.

[Problem to be solved by the invention]

This conventional electromagnet C has, for example, an electromagnet attached to the valve body.
When installing, separate the pipe body, coil body, and cap, and then attach the pipe body to the valve body.
Cover the pipe body with the 2-il body and finally attach the cap to the pipe body.
, (=lI is possible.I, However, when assembling the above pipe body, the open LI part ζJ oven should be closed with a cap, so if the opening is turned downward by mistake, the movable iron core inside There was a problem that the parts would fall off and get scratched, making them unusable and being left unused.

The present invention was made to solve the problems (technical problems) of the prior art described in 2. When assembling an electromagnet, the pipe body, coil body, and cap are separated and assembled in order. In addition, the movable iron core inside the pipe body can be assembled into the pipe body by mistake. The purpose is to provide an electromagnet that can be
There is.

[Means to solve problems]

In order to achieve the above object, the electromagnet in the present invention is
It has a pipe body with a hollow part in which a movable iron core can be freely reciprocated, and 1. One end of the pipe body is provided with a mounting part for connecting it to the valve body, An annular coil body is disposed around the pipe body so that it can be freely inserted and removed, and a movable iron core is installed in the hollow part of the pipe body so as to be able to reciprocate, and at the other end of the pipe body, It is installed there and closes the opening there, and the above-mentioned Bye! In order to prevent the coil body from being pulled out from around the body, a cap having an outer diameter larger than the inner diameter of the coil body is removably attached, and the movable iron core is attached to the axial center of the cap. The electromagnet is equipped with a bushing that can move forward and backward for manual operation of the CS.The inner peripheral surface of the other end of the above-mentioned vibrator body is designed to prevent the movable iron core inside the vibrator body from coming out of the opening at the other end. In order to prevent this, a stopper is provided that protrudes toward the axis of the pipe body, and one end of a return spring is attached to the bushbin to bias it in the backward direction. , the other end of the return spring is brought into contact with the strike bar.

[Effect]

When assembling the electromagnet, the pipe body is first attached with the pipe body, coil body, and cap separated. In this case, the movable core in the vibrator body is prevented from accidentally falling off from the pipe body by the stopper. Next, a coil body is attached around the pipe body, and then a cap is attached to the pipe body. This cap closes the opening of the pipe body and prevents the coil body from being removed. When you push the pushbin in the assembled electromagnet, the pushbin does not push the movable iron core.

Punonoyupin uses springs 1 and 11 as the above stoppers, and
It is returned to its original position by a return spring interposed between the scoop and Butshubin.

〔Example〕

Examples of the present application are shown below! 1-Describe the drawings.

In FIGS. 1 and 2, the five solenoid valves of this example are attached to a well-known valve body B to form a proportional control solenoid valve.

The electromagnet A is called a tube-shaped electromagnet because it has a pipe body C and a movable iron core inside. The electromagnet is composed of the pipe body C, an annular coil body disposed around the pipe body C so as to be freely inserted and removed, and a cap E for closing the opening of the pipe body C and fixing the coil body. It has been done.

The vibrator body C will be explained below. 7 is pipe body C
The fixed core is made of magnetic material such as pure iron or low carbon steel. 8 is a vibrator integrated with the fixed core 7,
This is a part for storing the movable iron core, and is made of a magnetic material i4 such as pure iron or low carbon steel. It is integrally connected to the horizontal characteristic forming portion 7h of the fixed iron core 7. Reference numeral 12 denotes a recessed part provided in the fixed iron core 7 in a -H formation, and around it is a male thread 1 for screwing into the valve body ■3.
3 is formed. 14 is for preventing residual magnetism of Svage C1, and is made of non-magnetic material (for example, non-magnetic stainless steel,
Brass). Next, reference numeral 15 indicates a male thread for connection provided on the circumference of the vibrator 8 at a portion facing the cap E. Reference numeral 17 denotes a retaining collar attached to the opening 1'' portion 8a of the vibrator 8, and is made of a resin material. Reference numeral 18 denotes a main body attached to the carnow, which is formed into a cylindrical shape and placed inside the pipe B. As shown in FIG. 4, a plurality of press-contact parts 19 are formed on the outer peripheral surface of the main body 18 in a bulging shape as means for fixing the vibrator 8 to the vibrator 8. As shown in FIG. Reference numeral 20 denotes a stopper provided at the tip of the main body 18, which is located on the inner peripheral surface of the vibrator 8 so as to protrude toward the axis of the vibrator 8, and its Mi1 surface is used to prevent the movable core from slipping out. It serves as a locking portion 20a, and the rear surface serves as a spring receiver 20b for receiving a return spring, which will be described later. 2] is an air relief part, and as shown in FIG. 5, its wall surface 21a is formed on a slope. Next, reference numeral 24 denotes a movable iron core provided inside the vibrator, which is made of a magnetic material such as pure iron or low carbon steel, and is made of a non-magnetic material '+4 (
A bottle 25 for transmitting operating force made of, for example, non-magnetic stainless steel is attached (press-fitted or glued). 24a is an adult flow hole. The bottle 25 passes through a through hole 7a formed in the fixed iron core 7, and is adapted to mate with a well-known spool provided in the valve body B.

Next, the coil body will be explained. Reference numeral 627 indicates a coil body, which is constructed by winding a coil winding 29 around a bobbin 28. 30 indicates a lead wire. 31 and 32 are yokes provided along one end and the other end of the main body 27, both of which are made of magnetic materials such as pure iron and low carbon steel. Magnetically connected by a yoke. These yokes constitute the external magnetic circuit. 34 is the main body 27, yoke 3], 32.
This molded body also serves as a case, and is made of well-known thermosetting or thermoplastic casting resin with high heat resistance.

Additionally, glass powder may be mixed in to increase mechanical strength. A bushing 35 is used to protect the lead wire 30.

Next, cap (3) will be explained. The cap E has a larger outer diameter than the inside of the noil body and is formed in a concave shape. 37 indicates the circumferential side wall, and 38 indicates the bottom wall. 39 indicates the inner side of the circumferential side wall 37. A female thread is provided on the circumferential surface 37a at a portion facing the vibrator body, and the male thread 1
It is formed in correspondence with 5. Reference numeral 37b denotes a coil body pressing portion, which is constituted by the tip of the circumferential wall 37. 40 is a gasket for preventing liquid leakage, and an O-ring is used. Reference numeral 41 designates a hole through the bottom wall 38, which is closed by a stopper 42 that can be opened and closed. Reference numeral 46 designates a well-known push bottle for manual operation.
7, it can be inserted and retracted freely. 48 is a through hole 47
This is an O-ring for sealing between the and Bushbin 46. Reference numeral 49 represents a spring attachment portion formed on the bushing bin 46. Reference numeral 50 designates a return spring, for example a conical coil spring as shown in the figure, whose end 50a is fixed to the spring attachment part 49, and the other end 50b is brought into contact with the spring receiver 20b. 1′! It is.

Next, how to use the above electromagnet will be explained. 1- Distribution magnet A
The electromagnet manufacturer is offering a first product in which a coil body is placed on pipe body C, and Yayanop IE is connected to pipe body C.
It is shipped in the state shown in the figure.

When a consumer of the electromagnet A connects it to the valve body B, the cap E is removed from the pipe body C, as shown in FIG. 2, and the coil body is separated from the pipe body C. In this state, the pipe body C is attached to the valve body B. To install it, screw the male thread 13 of the mounting part [2] into the female thread for mounting of the valve body B. Then, the opening of the through hole 7a, which is the opening of the pipe body C, communicates with the liquid path of the valve body.

Next, a coil body is placed around the pipe body C. Next, the cap E is attached to the pipe body C using the male thread I5 and the female thread 39 for connection as shown in FIG. 1, and the cap E is tightened. Due to this tightening, the coil body is pressed against the coil body pressing portion 37b and becomes in a fixed state.

Next, in the valve body B, the liquid path is filled with liquid (generally oil controlled by the valve). The liquid is through hole 7a
It also flows into the pipe body C through the pipe body C. In this state, the air remaining inside the pipe body C is removed by loosening the plug 42 in a well-known manner. in this case,
An air release part 21 is formed at the tip of the retaining collar 17, and the upper wall surface 21a thereof is sloped, so that the air inside the pipe body C smoothly reaches the air release hole 41, and the air inside the pipe body C flows smoothly. can be removed without leaving any air behind.

Next, the operation of the above-mentioned solenoid valve is as follows. When the coil winding 29 is energized through the lead wire 30, the magnetic flux generated is transmitted to the movable core 24, the fixed core 7, the yoke 31, and so on.
, 32, passes through the path of Vibe 8. As a result, the movable iron core 2
4 is subjected to an attractive force toward the fixed iron core 7. This suction force causes it to move toward the fixed iron core 7 side. The moving force of the movable core 24 is not transmitted to the spool of the valve body via the pin 25, but moves it. On the other hand, the above coil winding 2
When the energization to 9 is cut off, the magnetic flux 1- is extinguished, so that the movable core 24 is returned via the pin 25 by the force of the well-known return spring in which the spool is provided in the valve body.

Next, FIG. 6 showing a different embodiment of the present application will be described. This figure shows different examples of the structure of the stopper and return spring provided in the pipe body (e).

In this example, a C ring is used as the stopper 20e, and is fitted into a fitting groove 52 provided around the inner peripheral surface of the vibrator 8e. A normal coil spring is used as the return spring 50e, one end of which is fixed to a spring seat 53 provided on the bushing bin 46e.

Reference numeral 54 designates a stopper for preventing movement of the spring seat 53, for example, a C ring (an E ring may also be used), which is fitted into a fitting I455 provided around the bushing pin 46e.

It should be noted that the parts that can be considered to have the same or equivalent structure as those in the previous figure in terms of function are given the same reference numerals as in the previous figure with an alpha suffix e added thereto, and redundant explanations are omitted.

〔Effect of the invention〕

As described above, in the present invention, when assembling the electromagnet A to the valve body B, the pipe body C is attached to the valve body B in a state where the pipe body C, the coil body, and the 4-+ knob E are separated.
It has the advantage of being easy to assemble by attaching the coil body to the pipe body C, and finally attaching the cap E to the pipe body C.

Moreover, when the vibrator C is assembled, the cap E is not attached, but in that case, the opening 8a of the pipe C
Even if the movable core 24 is accidentally turned downward, the stopper 20 prevents the movable core 24 from coming off from the pipe body C, thereby preventing accidents such as the movable core 24 falling out onto the floor and causing damage to it. It has a preventive effect.

Furthermore, if you wish to perform a test with the electromagnet A attached as described above, you can manually hold the movable core 24 still by pushing the bushing 46 with your hand, even if the electrical connection has not yet been made. There is an option to perform a mechanical operation test.

Second, the stopper 2 is provided on the inner peripheral surface of the pipe body C.
0 is disposed in a protruding manner, the return spring 50 can be easily interposed between it and the bushbin 46 using the stopper 20, and the bushbin 46 can be automatically returned with a simple configuration. There is also the effect of

[Brief explanation of drawings]

The drawings show an embodiment of the present application, and FIG. 1 is a longitudinal sectional view of the electromagnet, FIG. 2 is an exploded view, FIG. 3 is a plan view of the retaining collar, FIG. 4 is a horizontal sectional view of the retaining collar, and FIG. 5 is a sectional view taken along the line ■-v in FIG. 2, and FIG. 6 is an exploded view (partial view) showing a different embodiment. C...pipe body, D...coil body, E...cap, 20...stopper, 24...movable iron core, 46...
・Butshubin, 50...Return spring.

Claims (1)

[Claims] It has a pipe body that has a hollow part in which a movable iron core can freely move back and forth, and at one end of the pipe body,
A mounting part is provided to connect it to the valve body, and a ring-shaped coil body is arranged around the pipe body so that it can be inserted and removed freely.
A movable iron core is provided in the hollow part of the pipe body so as to be able to reciprocate, and the movable iron core is attached to the other end of the pipe body to close the opening thereof, and the coil from around the pipe body. In order to prevent the coil body from coming off, a cap with an outer diameter larger than the inner diameter of the coil body is removably attached, and at the axial center of the cap there is a cap for manually operating the movable core. In an electromagnet in which a push pin is provided to move forward and backward, an inner circumferential surface of the other end of the pipe body is provided with a push pin to prevent the movable core in the pipe body from coming out of the opening at the other end. A stopper is provided that protrudes toward the axis, and one end of a return spring for biasing the push pin in the backward direction is fixed to the push pin. An electromagnet characterized in that an end is brought into contact with the stopper.