JP2005344804A - Solenoid valve device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solenoid valve device having high durability, and reducing cost and noise. <P>SOLUTION: The shaft directional one end side of a fixed core 20 is fitted to a fitting hole 15 of a housing 12. A movable core 30 is opposed to the fixed core 20 on the other end in the shaft direction of the fixed core 20. A coil 40 and a bobbin 42 are secondarily molded by a resin cover 44, and a connector 47 is integrally molded in the resin cover 44, and a terminal 46 is molded by the resin cover while being fixed to the bobbin 42 as it is. The terminal 46 is electrically connected to the coil 40. A vibration absorbing member 80 is a disk shape, and a hole 80a is formed for penetrating the fixed core 20 and a nonmagnetic member 32. The vibration absorbing member 80 is sandwiched between the resin cover 44 and a flange member 18. A valve member 50 is joined to the movable core 30, and is reciprocatably stored in a valve body 60 together with the movable core 30. An abutting part 52 of the valve member 50 can be seated on a valve seat 62 formed in the valve body 60. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a solenoid valve device.

  Conventionally, in the electromagnetic valve device configured as shown in Patent Document 1, for example, in FIG. 18, the valve body 160 of the electromagnetic valve device 100 vibrates due to an impact or the like when the valve member 150 is seated on the valve seat 162. The vibration of the valve body 160 is transmitted to the electrical connector 147 through the flange member 118 and the cover 112. When the electrical connector 147 vibrates, noise is emitted from the trumpet-shaped recess 147a of the electrical connector 147. Even if it is a solenoid valve device that does not have a trumpet-shaped recess in the electrical connector, if the external electrical connector that fits into the electrical connector of the solenoid valve device has a trumpet-shaped recess, the external electrical connector Noise is emitted from the side. In addition, since the external electrical connector that fits into the electrical connector 147 is fixed, there is a possibility that the terminal provided on the external electrical connector and fitted to the terminal 146 and the terminal 146 of the electrical connector 147 may be worn due to mutual friction. is there.

  Noise generated by vibration of the electrical connector can be reduced by changing the electrical connector to a harness type. Specifically, since the electrical connector 247 of the electromagnetic valve device 200 as shown in FIG. 19 does not have a trumpet-like structure, noise generated by vibration of the electrical connector 247 can be reduced. Further, since the electrical connector 247 of the electromagnetic valve device 200 and the external electrical connector 202 are connected by the wire harness 204, vibration of the electrical connector 247 is not transmitted to the external electrical connector 202. Therefore, noise is not radiated from the external electrical connector 202. Further, since the electrical connector 247 of the electromagnetic valve device 200 is joined to the connector portion 205 of the wire harness 204 that is not fixed, friction between the terminals of the electrical connector 247 and the terminals provided in the connector portion 205 can be reduced. That is, wear of the terminals of the electrical connector 247 and the connector portion 205 can be suppressed.

  On the other hand, Patent Document 2 discloses an electromagnetic valve device in which a housing of an electromagnetic valve device is supported by an external housing via a vibration absorbing member and is hermetically isolated from the outside by the external housing. . According to the electromagnetic valve device described in Patent Document 2, the vibration of the housing is attenuated by the vibration absorbing member, and the noise generated by the vibration is attenuated by the external housing.

JP 2001-304446 A JP 2001-336664 A

However, when the electrical connector is changed to the harness type as shown in FIG. 19, there is a problem that the workability of the assembly work of the electromagnetic valve device to the apparatus main body is deteriorated.
On the other hand, in the electromagnetic valve device described in Patent Document 2, it is necessary to provide an external housing that hermetically isolates the inside of the electromagnetic valve device from the outside, so that the manufacturing process of the electromagnetic valve device is complicated, and the electromagnetic valve There is a problem that the manufacturing cost of the apparatus increases.

  The present invention has been made to solve the above problems, and an object thereof is to provide an electromagnetic valve device having high durability, low cost and low noise.

According to the first to seventh aspects of the present invention, since the vibration absorbing member is held between the connector portion and the housing, the housing vibrates due to an impact or the like when the valve member is seated on the valve seat. In addition, vibration transmitted from the housing to the connector portion can be attenuated by the vibration absorbing member. Therefore, not only the noise due to the vibration of the connector part can be reduced, but also the wear of the terminals can be suppressed.
Moreover, since it is only necessary to provide the vibration absorbing member, there is no need to provide an external housing unlike the electromagnetic valve device described in Patent Document 2, for example, and the electromagnetic valve device can be manufactured at low cost.

  According to the invention described in claims 4 to 7, the vibration absorbing member is positioned with respect to the housing or the connector portion by fitting the fitting portion of the vibration absorbing member into the connector portion or the housing. According to the seventh aspect of the present invention, the vibration absorbing member is fitted and positioned in the concave portion of the connector portion or the housing. Therefore, the assembly of the electromagnetic valve device is facilitated. Further, it is possible to prevent the vibration absorbing member from being displaced from the arrangement position after the electromagnetic valve device is assembled.

Hereinafter, a plurality of embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 1 shows a solenoid valve device 10 according to a first embodiment of the present invention. The solenoid valve device 10 is used as a fuel metering valve of a high-pressure supply pump for a gasoline cylinder direct injection engine, for example.

  The electromagnetic valve device 10 includes a cover 12, a flange member 18, a fixed core 20, a movable core 30, a nonmagnetic member 32, a coil 40, a vibration absorbing member 80, a valve member 50, a valve body 60, and the like. The cover 12, the flange member 18, the fixed core 20, and the movable core 30 are made of a magnetic material and constitute a magnetic circuit. The fixed core 20, the movable core 30, and the coil 40 correspond to the electromagnetic drive unit described in the claims, and the cover 12, the flange member 18, and the valve body 60 correspond to the housing described in the claims.

  The cover 12 has a disc portion 13 and leg portions 16. The disc portion 13 has a notch 14 formed on the outer periphery on the opposite side of the radial direction from the position where the leg portion 16 is formed. A protrusion 48 of a resin cover 44 described later is fitted in the notch 14. A circular fitting hole 15 is formed at the center of the disc portion 13, and one end side of the fixed core 20 in the axial direction is fitted into the fitting hole 15. The leg portion 16 has an arc shape in cross section, and extends from the disc portion 13 to the flange member 18 side at a right angle to the disc portion 13. The bent portion 16a obtained by bending the end portion of the leg portion 16 on the flange member 18 side outward is coupled to the flange member 18 by welding or the like.

The fixed core 20 has a small diameter portion 21, a large diameter portion 22, and a small diameter portion 23 in this order from one end side in the axial direction exposed from the fitting hole 15 of the cover 12. The outer diameters of the small-diameter portion 21 and the small-diameter portion 23 are substantially equal and slightly larger than the inner diameter of the fitting hole 15. The small diameter portion 21 is press-fitted into the fitting hole 15 and fitted into the fitting hole 15.
The movable core 30 faces the fixed core 20 on the other end side in the axial direction of the fixed core 20. The nonmagnetic member 32 is formed of a nonmagnetic material into a thin cylindrical shape and covers the periphery of the fixed core 20 and the movable core 30. The nonmagnetic member 32 is sandwiched between the flange member 18 and the small diameter portion 23 side of the large diameter portion 22 of the fixed core 20. The nonmagnetic member 32 prevents the magnetic flux from being short-circuited between the flange member 18 and the fixed core 20. The coil spring 34 urges the movable core 30 in a direction in which the movable core 30 is separated from the fixed core 20, that is, in a direction in which a contact portion 52 of the valve member 50 is separated from a valve seat 62 described later.

  The coil 40 is wound around a bobbin 42 and covers the outer periphery of the fixed core 20 and the nonmagnetic member 32. The coil 40 and the bobbin 42 are secondarily formed by the resin cover 44. In the secondary molding, the connector 47 is integrally molded with the resin cover 44, the terminal 46 as a terminal is fixed to the bobbin 42, and the resin cover 44 is molded into an electrical connector shape. The terminal 46 is electrically connected to the coil 40. The resin cover 44, the connector 47, and the terminal 46 correspond to the connector portion described in the claims.

The vibration absorbing member 80 is formed in a disk shape from a resin such as rubber. The vibration absorbing member 80 is formed with a hole 80a through which the fixed core 20 and the nonmagnetic member 32 pass (see FIG. 2). The vibration absorbing member 80 is held between the resin cover 44 and the flange member 18. The arrangement of the vibration absorbing member 80 is not limited to the illustrated arrangement. For example, you may arrange | position like 3rd Embodiment to 5th Embodiment mentioned later.
The valve member 50 is coupled to the movable core 30 and reciprocates together with the movable core 30. The valve member 50 is accommodated in the valve body 60 so as to be reciprocally movable. The contact portion 52 of the valve member 50 can be seated on a valve seat 62 formed on the valve body 60.

The valve body 60 has an inflow port 64 that opens in the axial direction, and an outflow port 66 that opens in a direction orthogonal to the axis. When the contact portion 52 of the valve member 50 is seated on the valve seat 62, the communication between the inlet 64 and the outlet 66 is blocked. When the contact portion 52 of the valve member 50 is separated from the valve seat 62, the inflow port 64 and the outflow port 66 communicate with each other.
The stopper plate 70 is assembled to the valve body 60 and defines the lift amount of the valve member 50. A part of the outer peripheral edge portion of the stopper plate 70 is notched, and a communication path 72 is formed by this notch. When the contact portion 52 of the valve member 50 is separated from the valve seat 62, the inflow port 64 and the outflow port 66 communicate with each other through the communication path 72.

When the energization of the coil 40 is interrupted, the contact portion 52 of the valve member 50 is separated from the valve seat 62 by the urging force of the coil spring 34 received in the direction in which the movable core 30 is separated from the fixed core 20. And the outlet 66 communicate with each other via a communication path 72.
When the coil 40 is energized, the movable core 30 is attracted toward the fixed core 20 against the biasing force of the coil spring 34, and the contact portion 52 of the valve member 50 is seated on the valve seat 62. Thereby, the communication between the inflow port 64 and the outflow port 66 is blocked. At this time, the valve body 60 vibrates due to an impact when the contact portion 52 of the valve member 50 is seated on the valve seat 62. The vibration of the valve body 60 is transmitted to the flange member 18 and the cover 12. When this vibration is transmitted to the resin cover 44 as it is, noise is radiated from the trumpet-shaped recess 47 a of the connector 47 formed integrally with the resin cover 44. However, since the vibration absorbing member 80 is held between the resin cover 44 and the flange member 18, vibration transmitted to the resin cover 44 is attenuated by the vibration absorbing member 80. Therefore, noise radiated from the trumpet-shaped recess 47a of the connector 47 can be reduced. Further, it is possible to reduce friction between the terminal 46 provided on an external connector (not shown) fitted to the connector 47 and the terminal 46 fitted to the terminal 46. That is, wear of the terminal 46 and the terminal fitted to the terminal 46 can be suppressed.

  FIG. 3 is a graph showing the analysis result of the operation sound of the electromagnetic valve devices 10 and 100 by 1/3 octave analysis. This graph represents the relationship between the frequency of the operating sound of the solenoid valve devices 10 and 100 and the sound pressure level of the operating sound. The graph 90 represents the operation sound of the conventional solenoid valve device 100, and the graph 91 represents the operation sound of the solenoid valve device 10 according to the first embodiment. Comparing the graph 90 and the graph 91, it can be seen that the operation noise in the high frequency region can be reduced by arranging the vibration absorbing member 80 between the resin cover 44 and the flange member 18. This high-frequency operating sound corresponds to noise radiated from the trumpet-shaped recess 47 a of the connector 47.

(Second Embodiment)
A second embodiment of the present invention will be described with reference to FIG. In the second embodiment, parts that are substantially the same as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.
In the second embodiment, the flange member 18 and the valve body 60 are integrally formed as one member.

(Third to fifth embodiments)
Third to fifth embodiments of the present invention will be described with reference to FIGS. In the third to fifth embodiments, the arrangement of the vibration absorbing member 80 is different from that of the first embodiment, and other configurations are substantially the same as those of the first embodiment.
In the third embodiment, as shown in FIG. 5, a vibration absorbing member 80 is disposed between the upper surface of the resin cover 44 and the cover 12.
In the fourth embodiment, as shown in FIG. 6, vibration absorbing members 80 are disposed between the upper surface of the resin cover 44 and the cover 12 and between the lower surface of the resin cover 44 and the flange member 18.
In the fifth embodiment, as shown in FIG. 7, the vibration absorbing member 80 is disposed between the resin cover 44 and the cover 12 and the flange member 18 so as to cover the resin cover 44.

(Sixth to eleventh embodiments)
Sixth to eleventh embodiments of the present invention will be described with reference to FIGS. The sixth to eleventh embodiments are substantially the same as the first embodiment except that the shapes of the vibration absorbing member 80 and the flange member 18 are different from those of the first embodiment.

In the sixth embodiment, as shown in FIGS. 8 and 9, the vibration absorbing member 80 has a recess 81 (see FIG. 9) as a fitting portion, and the flange member 18 has a protrusion 181. By fitting the recess 81 of the vibration absorbing member 80 and the protrusion 181 of the flange member 18, the vibration absorbing member 80 can be positioned with respect to the flange member 18.
In the seventh embodiment, as shown in FIG. 10, the vibration absorbing member 80 has a recess 82 as a fitting portion, and the resin cover 44 has a protrusion 441. By fitting the concave portion 82 of the vibration absorbing member 80 and the protrusion 441 of the resin cover 44, the vibration absorbing member 80 can be positioned with respect to the resin cover 44.

In the eighth embodiment, as shown in FIGS. 11 and 12, the vibration absorbing member 80 has a protrusion 83 (see FIG. 12) as a fitting portion, and the flange member 18 has a recess 182. By fitting the protrusion 83 of the vibration absorbing member 80 and the recess 182 of the flange member 18, the vibration absorbing member 80 can be positioned with respect to the flange member 18.
In the ninth embodiment, as shown in FIG. 13, the vibration absorbing member 80 has a protrusion 84 as a fitting portion, and the resin cover 44 has a recess 442. By fitting the protrusion 84 of the vibration absorbing member 80 and the recess 442 of the resin cover 44, the vibration absorbing member 80 can be positioned with respect to the resin cover 44.

In the tenth embodiment, as shown in FIG. 14, the flange member 18 has a recess 183. The vibration absorbing member 80 can be positioned with respect to the flange member 18 by fitting the vibration absorbing member 80 into the recess 183 of the flange member 18.
In the eleventh embodiment, as shown in FIG. 15, the resin cover 44 has a recess 443. The vibration absorbing member 80 can be positioned with respect to the resin cover 44 by fitting the vibration absorbing member 80 into the recess 443 of the resin cover 44.
The recess 183 of the flange member 18 and the recess 443 of the resin cover 44 correspond to “a recess into which the vibration absorbing member is fitted” described in the claims.

(Twelfth and thirteenth embodiments)
The twelfth and thirteenth embodiments of the present invention will be described with reference to FIGS. 16 and 17. The twelfth to thirteenth embodiments are substantially the same as the first embodiment except that the shape of the vibration absorbing member 80 is different from that of the first embodiment.
In the twelfth embodiment, as shown in FIG. 16, a plurality of protrusions 87 are provided on one or both surfaces of the vibration absorbing member 80.
In the thirteenth embodiment, as shown in FIG. 17, the vibration absorbing member 80 is formed in an annular shape instead of a planar shape.

In the plurality of embodiments of the present invention described above, the vibration of the valve body 60 is transmitted to the flange member 18 and the cover 12, but the vibration transmitted from the flange member 18 and the cover 12 to the resin cover 44 is attenuated by the vibration absorbing member 80. The Therefore, noise radiated from the trumpet-shaped recess 47a of the connector 47 formed integrally with the resin cover 44 can be reduced, and wear of the terminal 46 can be suppressed.
In the second to fourth embodiments, since the vibration absorbing member 80 is positioned with respect to the flange member 18, the assembly of the electromagnetic valve device 10 is facilitated. Further, the vibration absorbing member 80 is not displaced by the vibration of the valve body 60.

(Other embodiments)
In the above embodiments, the vibration absorbing member 80 has been described as being a resin such as rubber. However, the vibration absorbing member 80 may be a synthetic resin, a damping steel plate, a damping alloy, or the like.
Moreover, although the shape of the vibration absorbing member 80 has been described as a disk shape, an annular shape, or a disk shape having a plurality of protrusions 87 in the above embodiments, the shape of the vibration absorbing member 80 is not limited to these.
In the sixth to eleventh embodiments, the structure for positioning the vibration absorbing member 80 is formed on the vibration absorbing member 80 and the flange member 18 or the resin cover 44. However, the structure is formed by combining these structures. May be.

It is typical sectional drawing showing the solenoid valve apparatus by 1st Embodiment of this invention. 1 is a perspective view of a vibration absorbing member according to a first embodiment of the present invention. It is a graph which shows the characteristic of the sound pressure level with respect to the vibration frequency of the solenoid valve apparatus by 1st Embodiment of this invention. It is typical sectional drawing showing the solenoid valve apparatus by 2nd Embodiment of this invention. It is typical sectional drawing showing the solenoid valve apparatus by 3rd Embodiment of this invention. It is typical sectional drawing showing the solenoid valve apparatus by 4th Embodiment of this invention. It is typical sectional drawing showing the solenoid valve apparatus by 5th Embodiment of this invention. It is typical sectional drawing showing the solenoid valve apparatus by 6th Embodiment of this invention. (A) is a top view of a vibration absorbing member according to a sixth embodiment of the present invention. (B) is A1-A1 sectional view taken on the line. It is typical sectional drawing showing the solenoid valve apparatus by 7th Embodiment of this invention. It is typical sectional drawing showing the solenoid valve apparatus by 8th Embodiment of this invention. (A) is a top view of the vibration-absorbing member according to the eighth embodiment of the present invention. (B) is A2-A2 sectional view. It is typical sectional drawing showing the solenoid valve apparatus by 9th Embodiment of this invention. It is typical sectional drawing showing the solenoid valve apparatus by 10th Embodiment of this invention. It is typical sectional drawing showing the solenoid valve apparatus by 11th Embodiment of this invention. It is typical sectional drawing showing the solenoid valve apparatus by 12th Embodiment of this invention. It is typical sectional drawing showing the solenoid valve apparatus by 13th Embodiment of this invention. It is typical sectional drawing showing the conventional solenoid valve apparatus. It is typical sectional drawing showing the conventional solenoid valve apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Solenoid valve apparatus, 12 Cover (housing), 18 Flange member (housing), 20 Fixed core (electromagnetic drive part), 30 Movable core (electromagnetic drive part), 40 Coil (electromagnetic drive part), 44 Resin cover (connector part) ), 46 Terminal (connector part), 47 Connector (connector part), 50 Valve member, 60 Valve body (housing), 80 Vibration absorbing member, 81, 82 Recessed part (fitting part), 83, 84 Projection part (fitting) Part), 181 protrusion (protrusion part that fits into the recess of the fitting part), 182 recess part (concave part that fits into the protrusion part of the fitting part), 183 recess part (concave part into which the vibration absorbing member is fitted), 441 protrusion Part (protrusion part that fits into the concave part of the fitting part), 442 concave part (concave part that fits into the convex part of the fitting part), 443 concave part (concave part into which the vibration absorbing member is fitted)

Claims (7)

An electromagnetic drive;
A valve member reciprocally driven in the axial direction by the electromagnetic drive unit;
A connector portion having terminals electrically connected to the electromagnetic drive portion;
A housing containing the valve member and having a valve seat on which the valve member is seated;
A vibration absorbing member sandwiched between the connector portion and the housing;
An electromagnetic valve device comprising:   The electromagnetic valve device according to claim 1, wherein the vibration absorbing member is disposed on one end side or the other end side of the connector portion in the axial direction.   The electromagnetic valve device according to claim 1, wherein the vibration absorbing member is disposed on a side surface side of the connector portion.   The said vibration absorption member has a fitting part, and when the said fitting part fits into the said connector part or the said housing, it positions with respect to the said connector part or the said housing. The electromagnetic valve device according to any one of 1 to 3. The fitting portion of the vibration absorbing member has a recess,
The electromagnetic valve device according to claim 4, wherein the connector part or the housing has a protrusion that fits into the concave part of the fitting part. The fitting portion of the vibration absorbing member has a protrusion,
The solenoid valve device according to claim 4 or 5, wherein the connector part or the housing has a recess that fits into the protrusion of the fitting part.   The electromagnetic valve device according to any one of claims 1 to 6, wherein the connector portion or the housing has a concave portion into which the vibration absorbing member is fitted.

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