JPH0138384Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention provides a solenoid valve, particularly a bobbin having a cylindrical part in the center and around which a solenoid is wound, and a bobbin having a socket part for electrical connection with the solenoid. a cover to cover, a fixed core that is inserted and fixed into the cylindrical portion, and a movable core that is movably inserted into the cylindrical portion to be actuated and biased by the fixed core, and has a valve body portion on the opposite side of the fixed core. ,
an electromagnetic actuation unit including a spring interposed between a fixed iron core and a movable iron core, and a metal frame surrounding the bobbin and the cover to form a magnetic path across the inside and outside of the bobbin; and a passage member having a passage that can be opened and closed and connected to an end between the movable iron cores of the electromagnetic actuating unit.

In such electromagnetic valves, the passage member generally has a passage pipe section projecting therein to communicate with the passage inside the passage member to form an inlet and an outlet, and the cover of the electromagnetic actuating unit has a passage pipe section that communicates with the passage inside the passage member to form an inlet and an outlet. Since a socket part is provided for obtaining electrical connection, when installing the solenoid valve in equipment such as a carburetor used in an internal combustion engine or an exhaust gas control device, it is necessary to use the socket part and each passage pipe in the electromagnetically actuated unit. There may be restrictions on the direction in which parts are arranged.

Therefore, as disclosed in Japanese Utility Model Application No. 58-50379, there is a prior art technique in which the electromagnetic actuation unit and the passage member are connected by making it possible to change the relative position of the socket part and the passage pipe part. By the way, the above publication does not disclose the structure for attaching the solenoid valve to the equipment, etc., and it is not clear which side of the electromagnetic actuation unit or the passage member should be attached to the equipment, etc., but in any case, the solenoid valve is attached to the equipment, etc. The relative position of the socket portion is constant with respect to the mounting position, or the relative position of the passage tube portion is constant, and restrictions on the mounting position still remain.

The present invention was developed in view of the above circumstances, and it is possible to change the relative positions of the socket part and the passage pipe part with respect to the mounting position, thereby increasing the degree of freedom in arrangement and making it applicable to various types of devices. In addition, it is an object of the present invention to provide a solenoid valve that is easy to assemble.

In order to achieve such an object, according to the present invention, a flange portion is provided at the end of the passage member on the electromagnetically actuated unit side, and the metal frame is fitted into the cover from the side opposite to the passage member. a U-shaped body formed into a substantially U-shape having a pair of mutually parallel parallel plates, and a bracket portion extending outward from the cover at a base sandwiched between the cover and the flange portion of the passage member. a pair of clamping pieces for connecting the passage member to the electromagnetic actuation unit are provided at the tips of each of the parallel plates, and the base of the end plate and the passage On the flange portion of the member, clamped portions that can be engaged with the two pairs of clamping pieces are respectively provided at four locations shifted by 90 degrees in the circumferential direction.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. First, in FIGS. 1 to 3, this solenoid valve is used for controlling air flow rate included in a carburetor or exhaust gas control device used in an internal combustion engine, for example. , an electromagnetic actuating unit 1 and a passage member 4 having two passage pipe parts 2 and 3 are combined,
By the action of the electromagnetic actuating unit 1, communication and disconnection between the two passage pipe sections 2 and 3 are switched.

The electromagnetic actuation unit 1 includes a synthetic resin bobbin 7 having a cylindrical portion 5 in the center and around which a solenoid 6 is wound, and a synthetic resin cover 10 that covers the bobbin 7 by molding to cover the solenoid 6.
and a fixed core 8 inserted and fixed into the cylindrical portion 5.
The fixed core 8 is movably inserted into the cylindrical portion 5 to be actuated and biased by the fixed core 8.
The movable core 9 has a valve body portion 37 on the opposite side.
, a spring 36 interposed between the fixed iron core 8 and the movable iron core 9, and a metal frame 13 surrounding the cover 10 to form a magnetic path inside and outside the bobbin 7.

The cover 10 and the bobbin 7 have annular seal grooves 25, 2 around the cylindrical portion 5 at both axial ends thereof.
7 and are joined together. Each seal groove 2
5 and 27 are formed in a pentagonal cross section expanding outward in the axial direction, and each seal groove 25, 2
Seal members 26 and 28 are inserted into 7, respectively. These seal members 26 and 28 contact the bobbin 7 and the cover 10, respectively, and also contact the end plates 11 and 12, which constitute a part of the metal frame 13, respectively. Therefore, the seal member 2
6 and 28 are in seal contact with the bobbin 7, the cover 10, and the metal frame 13, respectively, and the bobbin 7
and performs a sealing function at the joint of the cover 10.

A socket portion 16 projecting radially outward is integrally provided at one end of the cover 10. A plug (not shown) is fitted into the socket portion 16 to establish electrical connection with the solenoid 6.

The metal frame 13 has a substantially U-shape formed by connecting one ends of a pair of mutually parallel parallel plates 29 and 30 with an end plate 11 so as to be fitted into the cover 10 from the side opposite to the passage member 4. The character-shaped body 31 and the end plate 12, which also functions as a bracket, are substantially integrated. Further, a short cylindrical portion 32 communicating with the inside of the cylindrical portion 5 of the bobbin 7 is provided on the end plate 11 and protrudes concentrically with the cylindrical portion 5 .

One end of the fixed iron core 8 is connected to the short cylindrical portion 3 of the metal frame 13.
2 and inserted into the cylindrical portion 5 of the bobbin 7. The amount of insertion of the fixed core 8 into the cylindrical portion 5 is set in accordance with the operating stroke of the movable core 9. On the other hand, the movable core 9 is movably inserted into the other end of the cylindrical portion 5, and a spring 36 is interposed between the movable core 9 and a receiving member 35 provided at the other end of the fixed core 9. equipped. The spring force of the spring 36 urges the movable core 9 in a direction in which the valve body portion 37 thereof protrudes from the cylindrical portion 5 .

Referring also to FIG. 4, the passage member 4 includes a small-diameter cylindrical portion 46 and a large-diameter cylindrical portion 47 that are concentrically connected, and the end of the large-diameter cylindrical portion 47 on the electromagnetically actuated unit 1 side A square flange portion 48 is integrally provided. At the end of the small-diameter cylindrical portion 46 on the large-diameter cylindrical portion 47 side, there is a support cylindrical portion 4 that protrudes concentrically into the large-diameter cylindrical portion 47 .
9 are integrally connected, and a passage 50 communicating with the support cylinder part 49 is bored in the small diameter cylinder part 46.
An annular passage 51 is defined between the inner surface of the large diameter cylindrical portion 47 and the outer surface of the support cylindrical portion 49 . Support cylinder part 49
Inside, a cylindrical valve seat member 38 is inserted from the free end side.
is press-fitted, the valve body portion 37 is seated on the valve seat member 38, and the valve body portion 3 is removed from the valve seat member 38.
7, the communicating state and the blocking state between both passages 50 and 51 are switched.

The passage pipe part 2 communicating with the passage 50 is integrally provided on the small diameter cylinder part 46 of the passage member 4, and the passage pipe part 3 communicating with the passage 51 is integrally provided on the large diameter cylinder part 47. be done. These passage pipe portions 2 and 3 extend in a direction perpendicular to one end side of the flange portion 48.

Further, 4 in the flange portion 48 of the passage member 4
On each edge, at positions shifted by 90 degrees in the circumferential direction,
Trapezoidal clamped portion 52 that expands outward
55 are each integrally provided. That is, each of the held parts 52 to 55 has a pair of side edges 56 and 5 that are inclined so as to separate from each other as they go outward.
7 each. Also, those side edges 56,5
7 are curved so as to approach each other as they go toward the large diameter cylindrical portion 47 side.

In FIG. 5, the end plate 12 constituting a part of the metal frame 13 is formed in the same square shape as the flange portion 48 of the passage member 4.
8 and the cover 10, and a pair of flatket parts 59 extending from the base 58 to the outside of the cover 10 are integrated. Rectangular clamped parts 62 to 65 having a pair of mutually parallel side edges 60 and 61 are protruded from four end sides of the base 58, and the pair of bracket parts 59
extends outward from a pair of mutually parallel end sides to be held, for example, 62 and 64, and is formed in a substantially C-shape that opens outward.

In the metal frame 13, clamping pieces 29a, 2 are provided at both ends of the parallel plates 29, 30 in the width direction.
9b, 30a, and 30b are provided in pairs, respectively. That is, the metal frame 13 is provided with two sets of clamping pieces 29a, 29b, 30a, and 30b spaced apart by 180 degrees in the circumferential direction of the electromagnetic actuation unit 1.

The U-shaped body 31 of the metal frame 13 has the end plate 11 in contact with the bobbin 7 and the cover 10 at one end of the electromagnetic actuation unit 1, and both parallel plates 29,
The cover 10 is fitted into the electromagnetic actuation unit 1 so that the cover 30 comes into contact with the outer surface of the cover 10. On the other hand, at the other end of the electromagnetic actuating unit 1, the base 58 of the end plate 12 is brought into contact with the bobbin 7 and the cover 10. Further, the flange portion 48 of the passage member 4 is brought into contact with the end plate 12 via the seal member 34 .
In this state, the two sets of clamping pieces 29 of the U-shaped body 31
a, 29b, 30a, 30b are a pair of held parts of the end plate 12 and the passage member 4, for example, 62, 5
2, 64, and 54 are held between them, and the pair of holding pieces 29a, 29b, 30a, and 30b are bent and swaged in a direction toward each other. As a result, the clamping pieces 29a, 29b, 30a, 30b engage with the clamped parts 62, 52, 64, 54,
The end plate 12 and the passage member 4 are sandwiched. As a result, the U-shaped body 31 and the end plate 12 are substantially integrated, and the passage member 4 and the electromagnetic actuation unit 1 are integrally connected. Moreover, both end plates 11 and 12 of the metal frame 13 are pressed against both end surfaces of the bobbin 7 and the cover 10, and the seal members 26 and 2
8 is obtained.

The solenoid valve configured in this manner is fixed to a carburetor, an exhaust gas control device, etc. (not shown) by both bracket portions 59 of the end plate 12.

Next, to explain the operation of this embodiment, by energizing the solenoid 6, the fixed iron core 8,
A magnetic path returning to the fixed core 8 is formed via the metal frame 13, the movable core 9, and the spring 36, and the movable core 9 is attracted to the fixed core 8 against the force of the spring 36. As a result, the valve body portion 37 separates from the valve seat member 38, and the passages 50 and 51, that is, the passage pipe portions 2 and 3 are communicated with each other.

When the solenoid 6 is demagnetized, the magnetic path is not formed and the movable core 9 is moved away from the fixed core 8 by the spring 36. Therefore, the valve body portion 37 is seated on the valve seat member 38, and the passage tube portions 2 and 3 are cut off.

In such a solenoid valve, the circumferential relative position of the passage member 4 with respect to the electromagnetically actuated unit 1 can be arbitrarily selected every 90 degrees. That is, the passage member 4
The four clamped parts 52 in the flange part 48 of
55, hold any two of them between the holding pieces 29a, 29.
The position of the passage member 4 in the circumferential direction can be adjusted depending on whether the passage member 4 is held between the members b, 30a, and 30b. The end plate 1 also functions as a bracket.
2, the relative position in the circumferential direction with respect to the cover 10 can be arbitrarily selected every 90 degrees. That is, the circumferential position of the end plate 12 can be adjusted depending on which two of the four clamped parts 62 to 65 of the end plate 12 are clamped by the clamping pieces 29a, 29b, 30a, and 30b. can. Therefore, the relative position of the socket part 16 in the electromagnetic actuation unit 1 with respect to the end plate 12 can be changed in four ways, and the relative position of the passage tube parts 2 and 3 in the passage member 4 with respect to the end plate 12 can be changed in four ways. The combinations of the relative positions of the cover 10, the end plate 12, and the passage member 4 can be simply changed in 16 4×4 combinations. As a result, the socket part 16 is
Furthermore, the relative positions of the passage pipe parts 2 and 3 can be adjusted to increase the degree of freedom in arrangement.

In addition, the four held parts 52 to 55 of the passage member 4
, the side edges 56, 57 are inclined so as to separate from each other as they go outward, so that the pair of clamping pieces 29a, 29b, 30a,
30b are biased toward the bases of the clamped parts 52 to 55 so as to approach each other during caulking. This allows the clamping piece 29 to be attached to the corresponding end of the flange portion 48.
a, 29b, 30a, and 30b come into pressure contact, and a reliable clamping state is obtained. Furthermore, since each side edge 56, 57 is formed in a curved manner, the clamping pieces 29b, 2
When caulking 9b, 30a, 30b, caulking force effectively acts on each side edge 56, 57.

As described above, according to the present invention, the flange portion is provided at the end of the passage member on the electromagnetically actuated unit side, and the metal frame body is parallel to each other so as to be fitted to the cover from the opposite side to the passage member. A U-shaped body formed in a substantially U-shape having a pair of parallel plates, and a bracket portion extending outward from the cover are integrally connected to the base sandwiched between the cover and the flange portion of the passage member. and a pair of clamping pieces for connecting the passage member to the electromagnetic actuating unit are provided at the tips of each of the parallel plates, and a pair of clamping pieces for connecting the passage member to the electromagnetic actuating unit are provided at the base of the end plate and a flange portion of the passage member. Since the clamped portions that can be engaged with the two sets of clamping pieces are provided at four locations shifted by 90 degrees in the circumferential direction, the passage member and the electromagnetic actuation unit can be connected extremely easily. In addition, it is possible to set the relative positions of the socket portion and the passage member with respect to the mounting position of the solenoid valve to positions that do not cause any trouble in arrangement, and it is possible to adapt to various types of devices of different types.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and Fig. 1 is an overall front view, Fig. 2 is a left side view of Fig. 1, and Fig. 3 is a left side view of Fig. 1.
2, FIG. 4 is a bottom view of FIG. 1, and FIG. 5 is a sectional view taken along the line -- of FIG. 1. 1... Electromagnetic actuation unit, 4... Passage member, 5
... Cylinder, 6 ... Solenoid, 7 ... Bobbin, 8
... Fixed iron core, 9 ... Movable iron core, 10 ... Cover, 12 ... End plate, 13 ... Metal frame, 16 ...
Socket part, 29, 30...Parallel plate, 29a, 2
9b, 30a, 30b... clamping piece, 36... spring, 37... valve body part, 48... flange part, 5
0, 51...Aisle, 52-55, 62-65...
Clamped part, 58...base, 59...bracket part.

Claims (1)

[Scope of utility model registration request] A bobbin having a cylindrical portion in the center and around which the solenoid is wound, a cover having a socket portion for electrical connection with the solenoid and covering the bobbin, a fixed core inserted and fixed into the cylindrical portion, a movable core that is movably inserted into the cylindrical portion to be actuated and biased by the fixed core and has a valve body portion on the opposite side of the fixed core; a spring interposed between the fixed core and the movable core; Of the bobbins,
an electromagnetically actuated unit including a metal frame surrounding a bobbin and a cover to form a magnetic path to the outside; and a movable core side of the electromagnetically actuated unit having a passage that can be opened and closed by the valve body portion; a passage member coupled to an end of the electromagnetic valve; a flange portion is provided at the end of the passage member on the electromagnetically actuated unit side; and the metal frame is fitted into the cover from the side opposite to the passage member. A U-shaped body formed into a substantially U-shape having a pair of mutually parallel parallel plates to be fitted together, and a base sandwiched between the cover and the flange portion of the passage member, and a base portion extending outwardly from the cover. and an end plate formed by integrally continuous extending bracket portions, and a pair of clamping pieces for connecting the passage member to the electromagnetic actuation unit are provided at the tips of each of the parallel plates, and The base portion and the flange portion of the passage member have four clamped portions that can be engaged with the two pairs of clamping pieces and are shifted by 90 degrees in the circumferential direction.
A solenoid valve characterized by being provided at each location.