JPH07310846A - Solenoid valve - Google Patents

Abstract

PURPOSE:To simply and reliably protect a female coupler and to prevent the occurrence of defective contact through suppression of the generation of vibration of a lead wire by a method wherein a protection cylinder with which the female coupler is surrounded is formed at a valve body and a holding piece to hold the lead wire of a male coupler is formed at a valve body. CONSTITUTION:A solenoid valve 1 consists of a linear solenoid part S and a valve part V. In the linear solenoid part S, a female coupler 11f protruded from the release end of a housing 2 is connected to one end of a cover 4 through a neck part 12 and a coupler terminal 13 connected to a coil 5 is embedded in the neck part 12. Meanwhile, in the valve part V, the neck part 12 is fitted in the notch part 18 of a vale body 15 through a seal member 19. A male coupler 11m is removably mounted on the female coupler 11f to form a coupler 11. In this case, a protection cylinder 20 with which the outer periphery of the female coupler 11f is surrounded is formed at the valve body 15. Further, a holding piece 23 to hold the lead wire 21 of the male coupler 11m is formed at the valve body 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solenoid valve in which a valve body of a valve portion is connected to a housing of a solenoid portion having a female coupler.

[0002]

2. Description of the Related Art Such a solenoid valve is disclosed in, for example, Japanese Patent Laid-Open No.
It is already known as disclosed in Japanese Patent Publication No. 129475.

[0003]

In the conventional solenoid valve, since the female coupler made of synthetic resin is exposed to the outside, there is a possibility that it may be damaged by collision of other objects during its handling. . Further, when the male coupler is attached to or detached from the female coupler, damage may be caused even when a bending load is applied to the female coupler.

The present invention has been made in view of the above problems, and an object thereof is to provide a solenoid valve capable of protecting a female coupler from a collision and a bending load of another object.

[0005]

In order to achieve the above object, the present invention has a first feature that a protective cylinder surrounding a female coupler is integrally formed with a valve body.

In addition to the above features, the present invention has a second feature that a holding piece for holding the lead wire of the male coupler coupled to the female coupler is integrally formed on the valve body.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

First, in FIG. 1, a solenoid valve 1 for hydraulic control comprises a linear solenoid section S and a valve section V. The linear solenoid part S includes a cylindrical housing 2 whose one end is opened by a magnetic material, a coil 5 mounted on the housing 2 with its inner and outer peripheral surfaces covered with a synthetic resin bobbin 3 and a cover 4, and a bobbin 3 The fixed core 6 and the movable core 7 disposed in the hollow portion of the. A flange-shaped yoke 8 that fits into the open end portion of the housing 2 is integrally provided on the outer periphery of the fixed core 6, and a bearing 9 is provided at the center of the fixed core 6 and slides on the bearing 9. A freely supported actuating rod 10 is caulked to the fixed core 6.

A female coupler 11f projecting from the open end of the housing 2 to the valve portion V side is provided at one end of the cover 4 on the neck portion 12.
And the coil 5 is attached to the neck 12 thereof.
The coupler terminal 19 connected to is embedded.

Along with this, the female coupler 11f has a coupler 1
The male coupler 11m (see FIG. 2) constituting the first component 1 is detachably mounted, and when the coil 5 is energized via these, an electromagnetic thrust proportional to the current value is generated in the movable core 7. You can

On the other hand, the valve body 15 of the valve portion V has a plate shape as shown in FIGS. 3 and 4, and mounting bosses 16 are formed at four corners thereof. Referring again to FIG. 1, a flange 17 is integrally formed at one end of the valve body 15 so as to be overlapped with the yoke 8 and fitted between the open ends of the housing 2. The yoke 8 and the flange 17 are provided with a series of notches 18, and the neck portion 12 of the female coupler 11f is fitted into the notches 18 via a seal member 19 covering the outer periphery thereof. Opening edge 2 of housing 2
The part a is crimped inwardly so that the housing 2, the yoke 8 and the flange 17 are joined together.

The valve body 15 is composed of the female coupler 11 described above.
The protection cylinder 20 surrounding the outer periphery of f is integrally formed.

As shown in FIG. 2, the lead wire 21 of the male coupler 11m extends rearward of the valve body 15, and a holding piece 23 for holding an intermediate portion thereof through a grommet 22 projects integrally with the valve body 15. Set up. As shown in FIGS. 2 and 5, one side of the grommet 22 is provided with a slit 24 that allows the lead wire 21 to be inserted from the side, and the holding piece 23 holds the grommet 22. Hole 25
And the notch 26 that allows the lead wire 21 to be inserted from the side.
Is provided.

Referring again to FIG. 1, the valve hole 28 of the valve body 15 is formed coaxially with the bearing 9, and the spool valve 29 that abuts against the operating rod 10 is fitted therein. The spool valve 29 is actuated by a valve spring 30.
An adjusting screw 31 that is biased in the contact direction with 0 and adjusts the set load of the valve spring 30 is screwed to the valve body 15.

The valve body 15 includes a linear solenoid portion S.
The first to sixth ports P _{1 to} P ₆ are provided in order from the side. First
The port P ₁ is formed so as to accommodate the contact portion between the operating rod 10 and the spool valve 29, and is open to the oil sump as indicated by the cross mark. The second to fifth ports P _{2 to} P ₅ are formed so as to surround the outer circumference of the spool valve 29. The fourth port P ₄ is connected to the high-pressure oil passage 33 connected to the hydraulic power source 32, and the third port P ₃ is connected to the hydraulic operating unit 3.
4 is connected to the control oil passage 35, and the second and fifth ports P ₂ and P ₅ are opened to the oil sump as indicated by the mark X. Further, the sixth port P ₆ is formed so as to communicate with the reaction force chamber 36 which the outer end of the spool valve 29 faces, and the orifice 37 is connected in the middle of the control oil passage 35.

Thus, the spool valve 29 has a third port P
_{When 3} is displaced to the left in the figure from the neutral position where it does not communicate with both the second and fourth ports P ₂ and P ₄ , the 3rd port P
_{When 3} is communicated with the 4th port P ₄ and it is displaced to the right, it becomes the 3rd port.
The port P ₃ is adapted to communicate with the second port P ₂ . Therefore, when the linear solenoid portion S is energized, when the spool valve 29 is displaced leftward against the repulsive force of the valve spring 30 by the electromagnetic thrust acting on the operating rod 10 from the movable core 7, the second and third ports P ₂ , P ₃ is cut off, the third and fourth ports P ₃ , P ₄ are electrically connected, and hydraulic pressure is supplied from the high pressure oil passage 33 to the control oil passage 35. Then, the hydraulic pressure is immediately supplied to the hydraulic operating unit 34,
It is also transmitted to the reaction force chamber 36 through the orifice 37, and the pressing force due to the hydraulic pressure thereof and the repulsive force of the valve spring 30 act on the spool valve 29 as a reaction force, and press it toward the operating rod 10. As a result, the spool valve 29 moves left and right so as to balance the electromagnetic thrust of the operating rod 10 with the reaction force, and the hydraulic pressure operating portion 34 is supplied with hydraulic pressure proportional to the current value flowing through the linear solenoid portion S. can do.

Next, the operation of this embodiment will be described.

When using the linear solenoid valve S,
As shown in FIG. 2, the male coupler 11m is attached to the female coupler 11f. The coupler 11 configured in this way is used in the protective cylinder 2
Because it is covered by 0, it is protected from collision with other objects. Also, when attaching and detaching the male coupler 11m, the female coupler 11
Even if a bending load is applied to f, the female coupler 11f immediately comes into contact with the inner surface of the protection cylinder 20, so that the bending deformation of the neck portion 12 can be suppressed to be small and the damage can be prevented.

Moreover, since the protective cylinder 20 is formed integrally with the valve body 15, it is not necessary to increase the number of parts.

Further, since the lead wire 21 of the male coupler 11m is held by the holding piece 23 via the grommet 22, unnecessary vibration of the lead wire 21 is suppressed, and the coupler 1 caused by the vibration is suppressed.
The contact failure of No. 1 can be prevented. Since the holding piece 23 is also formed integrally with the valve body 15, the number of parts is not increased.

In the above embodiment, various design changes can be made without departing from the gist of the present invention. For example, the solenoid valve can be configured to be an open / close type.

[0022]

As described above, according to the present invention, since the protective cylinder surrounding the female coupler is formed integrally with the valve body,
The female sleeve of the coupler can be protected from the collision and bending load of other objects by the protective cylinder, and since the protective cylinder is integrated with the valve body, there is no increase in the number of parts and therefore a significant cost increase. Will not invite.

According to the second aspect of the present invention, the valve body is integrally formed with a holding piece for holding the lead wire of the male coupler coupled to the female coupler. Can be suppressed by the holding piece, and contact failure of the coupler due to the vibration can be prevented.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a solenoid valve according to an embodiment of the present invention.

FIG. 2 is a vertical sectional side view showing the solenoid valve in a connected state of a coupler.

FIG. 3 is a view taken in the direction of arrow 3 in FIG.

4 is a sectional view taken along line 4-4 of FIG.

FIG. 5 is an exploded perspective view of the lead wire holding structure of the male coupler.

[Explanation of symbols]

 S Linear solenoid part V Valve part 1 Solenoid valve 2 Housing 11 Coupler 11f Female coupler 11m Male coupler 15 Valve body 20 Protective cylinder 21 Lead wire 23 Holding piece

Claims (2)

[Claims] 1. A solenoid valve in which a valve body (15) of a valve section (V) is connected to a housing (2) of a solenoid section (S) having a female coupler (11f). A solenoid valve in which a surrounding protection cylinder (20) is integrally formed with a valve body (15). 2. The valve body (15) according to claim 1, further comprising a holding piece (23) for holding a lead wire (21) of a male coupler (11m) coupled to the female coupler (11f). Solenoid valve characterized by being integrally formed.