JPH0118942Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention uses a moving coil type linear motor to
This invention relates to improvements in electromagnetic flow control valve devices that control the opening and closing actions of valves.

Conventionally, in this type of flow control valve, the valve drive coil itself moves, and a valve biasing spring is used as an energizing electrode. Furthermore, since a control window was provided between the electromagnetic coil on the bobbin holder and the spring connection terminal, which served as a fluid passage between the inlet port and the outlet port, the molding area was divided between the spring connection terminal and the electromagnetic coil.
There were some problems.

Further, between the electromagnetic coil and the spring connection terminal, an unmolded lead wire ran across the control window without being fixed anywhere. For this reason, the lead wires are susceptible to vibrations caused by movement of the slide valve and heat generated by the coil, resulting in problems such as poor insulation and disconnection of the lead wires.

Therefore, the first object of the present invention is to enable the spring connection terminal and the electromagnetic coil portion to be integrally molded.

A second purpose of the present invention is to protect the lead wires from the effects of vibrations and heat generated by the coil when the slide valve moves.

The first and second objects of the invention are achieved by providing a control window between the spring connection terminal and the spring holder arranged on the opposite side of the electromagnetic coil via the connection terminal.

Since the control window is provided between the spring connection terminal and the spring holder, the electromagnetic coil and the spring connection terminal can be integrally molded. Also, since the lead wire between the electromagnetic coil and the spring connection terminal is also molded during this molding, the lead wire can be protected from vibrations when the slide valve moves and from the effects of heat generated by the coil. I can do it.

By adopting the above configuration, conventionally there were two molding parts, the spring connection terminal and the electromagnetic coil part, but in the present invention, there is only one molding part.
This has the effect of improving the workability of molding work.

Next, one embodiment of the electromagnetic flow control valve device according to the present invention will be described based on the drawings.

The flow control valve device 10 includes an inlet port 10
A cover 21 made of a magnetic material is attached to a yoke 20 that houses a linear motor section 30, and a hanging 41 that houses springs 40a and 40b.

A moving coil type linear motor 30 housed in the yoke 20 includes a magnetic core 31 and a magnetic core 3.
1, a bobbin holder 33 inserted into the right end of the slide valve 32, a bobbin part 34 composed of the bobbin holder 33 and the slide valve 32,
It is composed of an electromagnetic coil 35 wound on the bobbin 34, and a pair of permanent magnets 36a and 36b fixed to the yoke 20 so that magnetic flux passes approximately at right angles to the winding of the electromagnetic coil 35. A movable part in the linear motor 30, that is, a slide valve 32,
The electromagnetic coil 35 and the bobbin holder 33 are always urged toward the left in the drawing by springs 40a and 40 disposed between the spring holder 33a and the retainer 42.

Therefore, the left end of the slide valve 32 is connected to the core 31.
The sleeve 37 is inserted into the left end of the sleeve 37. The springs 40a and 40b are also used as power supply lines to the electromagnetic coil 35 on the slide valve 32, one end of the spring 40a is connected to an anode lead wire 43, and one end of the spring 40b is connected to a cathode lead wire (not shown). ).

The bobbin holder 33 is a cylindrical body made of insulating synthetic resin fixed to the outer periphery of the slide valve 32, and supports one end of the electromagnetic coil 35 at its left end.

Further, the bobbin holder 33 has the spring holder 33a and the spring connection terminal 33b. An eyelet 38 is fitted into the spring connecting terminal 33b, and by caulking the eyelet 38, one ends of the springs 40a and 40b are fixed to the spring rig connecting terminal 33b.

Lead wire 3 drawn out by electromagnetic coil 35
9 is wrapped around the upper end of the eyelet 38 and the spring connection terminal 33b and then soldered. Thereafter, the electromagnetic coil 35 and the eyelet 38 are integrally molded 54.

Furthermore, the bobbin holder 33 is a spring holder 3.
A control window 50 is provided between the spring connection terminal 3a and the spring connection terminal 33b, and the control window 50 is aligned with a communication hole 51 provided in the slide valve 32.

A first passage _P1 communicating with the first outlet port 10b is provided at the left end of the magnetic core 31, and a plurality of first valve holes 52 are provided in the middle of the first passage _P1 . A second passage _P2 communicating with the second outlet port 10c is provided at the right end of the valve 31, and a plurality of second valve holes 53 are provided in the middle of this passage.

A communication hole 20a is provided above the bobbin holder 33 of the yoke 20, and communicates the chamber _R1 between the yoke 20, the housing 41, and the magnetic core 31 with the inlet port 10a.

The first valve hole 52 constitutes a first control valve _V1 with an annular first valve body 32a provided integrally on the left inner circumference of the slide valve 32, and is connected to the inlet port 10a and the first passage. The communication between _{P1 and} P1 is proportionally controlled according to the operation of the linear motor 30. On the other hand, the second valve hole 53 constitutes a second control valve V ₂ together with a control window 50 provided in the bobbin holder 33 and a communication hole 51 provided in a slide valve that is aligned with the control window 50. Therefore, when the second valve hole 53 and the control window 50 of the bobbin holder 33 are aligned, the inlet port 10a and the second passage, that is, the second outlet port 10c, communicate proportionally.

In this embodiment, when the electromagnetic coil 35 is assisted, the bobbin holder 33 and the electromagnetic coil 35 are pushed to the left, the left end of the slide valve 32 comes into contact with the sleeve 37, and the first valve hole 52 and the second valve hole 53 are completely closed. It is considered closed. Therefore, both the communication between the inlet port 10a and the first outlet port 10b and the communication between the inlet port 10a and the second outlet port 10c are cut off. Next, when the electromagnetic coil 33 is energized, the slide valve 32 and bobbin holder 33 slide to the right against the urging force of the springs 40a and 40b. Therefore, the first control valve V ₁ and the second control valve
The control valves V ₂ each simultaneously open in a direction in which the opening area increases proportionally.

In this way, fluid such as air flowing in from the inlet port 10a is transferred to the first control valve V ₁ and the first passage P _{1 .}
It is supplied to the first outlet port 10b through the second control valve V ₂ and the second passage P ₂ to the second outlet port 10c.

As described above, according to the device of this embodiment, since the control window 50 is provided between the spring connection terminal 33b and the spring holder 33a, the electromagnetic coil 35 and the spring connection terminal 33b are connected independently of the control window 50. molding 54 integrally with
can do. Also, when molding 54, the electromagnetic coil 35 and the spring connection terminal 33b are
Since the lead wires 39 between them are also molded 54, the lead wires 39 can be protected from vibrations when the slide valve 32 moves and from the effects of heat generated by the electromagnetic coil 35.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the electromagnetic flow control valve device of the present invention. In particular, the magnetic core 31, slide valve 32, and bobbin holder 33 are shown in the sectional view taken along the line A-A in FIG. 2 is a side view showing the electromagnetic core 31, slide valve 32, and bobbin holder 33 of FIG. 1. FIG. 10a... Inlet port, 10b... Outlet port (first outlet port),
10c...Outlet port (second outlet port), 20...Yoke, 30...Linear motor, 31...Magnetic core, 32...Slide valve, 33...Bobbin holder, 33a...Spring holder, 33b... Spring connection terminal,
34... Bobbin, 35... Electromagnetic coil, 36a,
36b... Permanent magnet, 39... Lead wire, 40
a, 40b...Spring, 50...Fluid passage control window, 52...Valve hole (first valve hole), 53...
Valve hole (second valve hole), 54... Molding.

Claims (1)

[Scope of utility model registration request] In an electromagnetic flow control valve device that has an inlet port and first and second outlet ports, and controls the flow rate of fluid flowing between the inlet port and the first and second outlet ports. , a magnetic core, a slide valve slidably disposed on the magnetic core, a bobbin holder inserted onto the slide valve and forming a bobbin together with the slide valve, and a bobbin wound on the bobbin. A moving coil type linear motor comprising permanent magnets arranged so that magnetic flux passes at right angles to the windings of an electromagnetic coil, and a yoke that forms a magnetic circuit of the permanent magnets together with the magnetic core; a first valve hole formed on the core and communicating with the first outlet port; a second valve hole formed on the magnetic core and communicating with the second outlet port; and the slide valve. and a spring that biases the bobbin holder in one direction and supplies power to the electromagnetic coil, a spring connection terminal that is formed on the outer peripheral surface of the cylinder of the bobbin holder and engages a power supply terminal that is drawn out from the spring, and a spring that is drawn out from the electromagnetic coil. A lead wire connected to the spring connection terminal, a spring holder provided on the other side of the electromagnetic coil on the cylindrical outer periphery of the bobbin holder via the spring connection terminal, and a connection between the spring holder and the spring connection terminal. An electromagnetic flow control valve device having a fluid passage control window provided therebetween and integrally molding the coil and the spring connection terminal.