CN112081985A - Electromagnetic coil and valve device - Google Patents
Electromagnetic coil and valve device Download PDFInfo
- Publication number
- CN112081985A CN112081985A CN202010489193.7A CN202010489193A CN112081985A CN 112081985 A CN112081985 A CN 112081985A CN 202010489193 A CN202010489193 A CN 202010489193A CN 112081985 A CN112081985 A CN 112081985A
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- China
- Prior art keywords
- insertion hole
- attractor
- electromagnetic coil
- operating portion
- pad
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0603—Multiple-way valves
- F16K31/0624—Lift valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/029—Electromagnetically actuated valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
Abstract
The invention provides an electromagnetic coil and a valve device, which prevent the pad component from falling off and losing in the electromagnetic coil using the pad component for magnetically connecting the action part of a valve main body part and the shell of the electromagnetic coil. The electromagnetic coil is constituted by a molded coil (13) and a housing (11), and the molded coil (13) is formed with an operating part insertion hole (13A) through which the operating part (3) of the valve body part (20) is inserted. A gasket fitting hole (13B) is formed in the end of an operation portion insertion hole (13A) of the molded coil (13). A pad member (4) is fitted into the pad fitting hole (13B). A spacer member (4) is provided between the attractor (33) of the operating section (3) and the substrate section (11a) of the housing (11). The attractor (33) and the substrate section (11a) are magnetically connected by a spacer member (4). The contact part (131) between the action part insertion hole (13A) and the gasket fitting hole (13B) prevents the gasket member (4) from falling off.
Description
Technical Field
The present invention relates to an electromagnetic coil for actuating a plunger or the like in an actuating portion of a valve device, and a valve device including the electromagnetic coil.
Background
Conventionally, such a solenoid and a valve device are disclosed in, for example, Japanese unexamined patent publication No. 59-86477 (patent document 1). This conventional valve device is an electromagnetic valve, in which a plunger facing an attractor through a plunger spring is inserted into a plunger tube, and a solenoid (coil) is disposed on the outer periphery of the plunger tube. Then, the plunger is driven by the electromagnetic force of the solenoid to operate the valve body. That is, the plunger tube, the attractor, and the plunger constitute a cylindrical operating portion that operates the valve body on the valve body side, and the solenoid and its housing constitute an electromagnetic coil. The operating unit is inserted and arranged in the center of the electromagnetic coil.
Documents of the prior art
Patent document
Patent document 1: japanese Kokai publication Sho 59-86477
Disclosure of Invention
Problems to be solved by the invention
As described above, the solenoid valve (valve device) has a structure in which the operating portion of the valve main body is inserted into the solenoid, but many solenoid valves have the solenoid detachable from the operating portion. The solenoid coil attached to the operating portion as it is can be appropriately changed by the valve body portion according to the specification of the solenoid valve.
However, even when the valve main body portion (operating portion) is not changed, there may be a difference between the length of the operating portion and the length of the electromagnetic coil. For example, when the length of the electromagnetic coil is longer (larger) than the length of the operating portion, it is conceivable to use a spacer member made of a magnetic material as shown in fig. 2 of patent document 1, for example, to magnetically connect the operating portion (attractor) of the valve main body portion and the housing of the electromagnetic coil, and to dispose the spacer member between the attractor of the operating portion and the housing of the electromagnetic coil. However, in such a case, the spacer member may come off from the electromagnetic coil during the replacement operation of the electromagnetic coil, and the spacer member may be lost.
The present invention addresses the problem of providing an electromagnetic coil that uses a spacer member that magnetically connects an operating portion (attractor) of a valve body portion and a housing of the electromagnetic coil, and that can prevent the spacer member from coming off and becoming lost, and a valve device that uses the electromagnetic coil.
Means for solving the problems
The electromagnetic coil according to claim 1 is an electromagnetic coil mounted on a valve body unit, the valve body unit having an operating unit in which a plunger is inserted into a cylindrical plunger housing, and an attractor is fixed to an end of the plunger housing, the valve body unit causing a valve element to operate in conjunction with the plunger of the operating unit, the electromagnetic coil comprising: a molded coil in which an operating portion insertion hole for inserting the operating portion is formed; a housing having a substrate portion facing the operation portion insertion hole of the mold coil; and a spacer member that magnetically connects the attractor and the substrate portion of the housing between the attractor of the operating portion and the substrate portion, and includes a coming-off prevention structure that prevents the spacer member from coming off from the operating portion insertion hole of the mold coil to a side opposite to the substrate portion.
In this case, it is preferable that at least a part of the pad member has an outer diameter larger than an inner diameter of the operating portion insertion hole, and the larger outer diameter part constitutes a part of the retaining structure.
In addition, it is preferable that the pad member is mounted on the operating portion in a state before the pad member is mounted on the operating portion, and the portion of the pad member constituting a portion of the retaining structure is loosely fitted between the base plate portion of the housing and the operating portion insertion hole so as to be movable in an axial direction of the operating portion insertion hole.
Preferably, the spacer member has a case side bonding surface that contacts the substrate portion of the case and an attractor side bonding surface that contacts the attractor, and the attractor side bonding surface contacts the entire surface of the attractor that faces the attractor side bonding surface, and the case side bonding surface contacts the substrate portion over a larger area than the entire surface of the facing surface.
In this case, it is preferable that the operation portion insertion hole has a pad fitting hole on the base plate side, the pad fitting hole has an inner diameter larger than that of the operation portion insertion hole, the pad member is fitted in the pad fitting hole, and an end portion of the pad member abuts against a stepped portion of the pad fitting hole with respect to the operation portion insertion hole, thereby constituting the coming-off prevention structure.
Further, it is preferable that the pad member has a flange portion formed on an outer periphery thereof, the flange portion having a diameter larger than that of the operating portion insertion hole, and the flange portion abuts against an opening peripheral portion of the operating portion insertion hole on the base plate side, thereby forming the retaining structure.
Preferably, the operation portion insertion hole has a gasket fitting hole on the base plate side, the gasket fitting hole has a tapered surface whose diameter increases with distance from the operation portion insertion hole, the gasket member is fitted in the gasket fitting hole, and an outer peripheral surface of the gasket member abuts against the tapered surface, thereby constituting the coming-off prevention structure.
The valve device of the present invention is characterized in that the solenoid coil is provided to the operating portion of the valve main body.
Effects of the invention
According to the electromagnetic coil of the present invention, the molded coil can be prevented from coming off from the operating portion insertion hole to the opposite side of the base plate portion of the spacer member by the coming-off prevention structure, and therefore, the spacer member can be prevented from coming off and being lost.
Further, according to the valve device of the present invention, the spacer member can be prevented from coming off and being lost when the solenoid coil is attached and detached.
Drawings
Fig. 1 is a longitudinal sectional view of a valve device according to a first embodiment of the present invention when not energized.
Fig. 2 is a main-part enlarged sectional view showing a state before the solenoid coil of the first embodiment is attached to the valve main body.
Fig. 3 is a main-part enlarged cross-sectional view showing a state after the electromagnetic coil according to the first embodiment is attached to the operating portion.
Fig. 4 is a main-part enlarged sectional view showing a state before the solenoid coil according to the second embodiment of the present invention is attached to the valve body portion.
Fig. 5 is a main-part enlarged sectional view showing a state after the electromagnetic coil according to the second embodiment is attached to the operating portion.
Fig. 6 is a main-part enlarged cross-sectional view showing a state after the solenoid coil according to the third embodiment of the present invention is attached to the operating portion.
Fig. 7 is a main-part enlarged cross-sectional view showing a state after the solenoid coil according to the fourth embodiment of the present invention is attached to the operating portion.
Fig. 8 is a main-part enlarged cross-sectional view showing a state after the solenoid coil according to the fifth embodiment of the present invention is attached to the operating portion.
Fig. 9 is a main-part enlarged cross-sectional view showing a state after the solenoid coil according to the sixth embodiment of the present invention is attached to the operating portion.
In the figure:
10-an electromagnetic coil, 11-a case, 11A-a base plate portion, 12-a fixing plate, 13-a molded coil, 13A-an operation portion insertion hole, 13B-a gasket fitting hole, 13C-a gasket fitting hole, 13D-a gasket fitting hole, 13A-a molded resin, 13B-a coil bobbin, 13C-a coil, 131-a contact portion (coming-off preventing structure), 20-a valve main body portion, 21-a valve case, 21A-a joint portion, 21B-a cylinder tube portion, 21A-a primary side joint, 21B-a secondary side joint, 21C-a retainer portion, 22-a piston valve, 3-an operation portion, 31-a plunger tube, 32-a plunger, 32a pilot valve, 33-an attractor, 33A gasket side plane, 34-a plunger spring, 4-a gasket member, 41-an outer peripheral portion (coming-off preventing structure), 4A-a case side joint surface, 4B-an attractor side joint surface, 5-a gasket member, 51-a protruding edge portion (structure), 5A-case side joint surface, 5B-attractor side joint surface, 132-taper portion (opening periphery portion, retaining structure), 13C-spacer fitting hole (retaining structure), 6-spacer member, 61-outer periphery (retaining structure), 6A-case side joint surface, 6B-attractor side joint surface, 13D-spacer fitting hole, 133-abutting portion (retaining structure), 7-spacer member, 71-flange portion, 7A-case side joint surface, 7B-attractor side joint surface, 7A-step portion (retaining structure), 11a '-base plate portion, 111-recess portion, 8-spacer member, 81-outer periphery portion (retaining structure), 8A-case side joint surface, 8B-attractor side joint surface, 13B' -bobbin, 134-opening periphery portion (retaining structure), 9-spacer member, 91-flange portion (retaining structure), 9A-case side joint surface, 9B-attractor side interface, L-axis.
Detailed Description
Next, an embodiment of the solenoid and the valve device according to the present invention will be described with reference to the drawings. The valve device of each embodiment described below is an example of a pilot-operated solenoid valve. Fig. 1 is a longitudinal sectional view of the valve device of the first embodiment when not energized. Note that the concept of "up and down" in the following description corresponds to the up and down of the drawing of fig. 1. The valve device of the first embodiment is composed of an electromagnetic coil 10 and a valve main body 20. The symbol "L" in the drawing is an axis line which becomes the center of the plunger tube 31 and the operating portion insertion hole 13A described later.
The electromagnetic coil 10 includes a case 11, a fixing plate 12, a mold coil 13, and a spacer member 4, and the fixing plate 12 is provided integrally with the mold coil 13 by insert molding with a mold resin 13a of the mold coil 13. The housing 11, the fixed plate 12, and the pad member 4 are each made of a magnetic material. The case 11 has a configuration of "コ" shape integrally including a substrate portion 11a fitted to an end portion of the molded coil 13 on the opposite side of the fixed plate 12, and a pair of side plate portions 11b (shown by broken lines) extending in the same direction from the substrate portion 11a in parallel with the axis L. The substrate portion 11a is positioned so as to intersect an operating portion insertion hole 13A of the motor coil 13, which will be described later. The pair of side plate portions 11b are positioned on the side periphery of the mold coil 13, and are fixed to the fixed plate 12 (and the mold coil 13) by caulking or the like by sandwiching the fixed plate 12 between the end portions on the opposite side to the base plate portion 11 a.
The molded coil 13 is formed by winding a cylindrical coil 13c around a bobbin 13b and integrally molding the same with a molding resin 13 a. The bobbin 13B has a substantially cylindrical hole at the center, and thus the molded coil 13 is formed with an operating portion insertion hole 13A and a spacer fitting hole 13B with the axis L as the center line. The pad fitting hole 13B communicates with the operating portion insertion hole 13A and opens on the base plate portion 11a side of the housing 11, and the inner diameter of the pad fitting hole 13B is larger than the inner diameter of the operating portion insertion hole 13A. A columnar spacer member 4 is fitted into the spacer fitting hole 13B, an attractor 33 of the operating unit 3 and a plunger tube 31, which will be described later, are inserted into the operating unit insertion hole 13A, and the spacer member 4 is interposed between the attractor 33 and the substrate portion 11a of the housing 11. The electromagnetic coil 10 is fixed to the attractor 33 of the operating portion 3 by a screw N via the screw hole 11c of the base plate portion 11a and the center hole 14a of the spacer member 4. The details of the pad member 4 will be described later.
The valve body 20 includes a valve housing 21 and the operating portion 3 provided in the valve housing 21, and the valve housing 21 is composed of a metal joint portion 21A and a cylinder portion 21B. The joint portion 21A has: a high-pressure primary side joint 21a into which a fluid such as a refrigerant flows; a secondary side joint 21b for flowing out of the fluid; and a holder portion 21c having an axis L orthogonal to the primary side joint 21a and the secondary side joint 21b as a central axis. The cylinder portion 21B is screwed into the holder portion 21c and fixed coaxially with the holder portion 21 c.
Further, in the joint part 21A, a partition wall 21d is formed between the primary side joint 21A and the secondary side joint 21b, and a main valve seat 21e is formed on the holder part 21c side of the partition wall 21 d. A main valve port 21f forming a circular opening is formed in the main valve seat 21e, and a thin circular valve chamber 21g is formed around the main valve seat 21 e. The cylinder portion 21B extends from the holder portion 21c toward the operating portion 3, and a cylindrical guide hole 21h is formed in the cylinder portion 21c, and the piston valve 22 is inserted into the guide hole 21 h. A filter 21i is disposed in the primary side connector 21 a. The filter 21i is attached to the plug 21j and is attached to the end of the primary side joint 21a together with the plug 21 j.
The piston valve 22 has a substantially cylindrical outer shape, and is formed integrally by press-fitting a metal piston portion 22a covering the outside and a resin seal portion 22b disposed inside the piston portion, and bending and caulking the upper portion of the piston portion 22a inwardly. The piston valve 22 is disposed to face the main valve port 21f, and a substantially truncated cone-shaped valve opening spring 22c is disposed in compression between the bottom of the valve chamber 21g and the piston valve 22. The piston valve 22 is biased in a direction (valve opening direction) away from the main valve seat 21e by the elastic force of the valve opening spring 22 c. Then, when the piston valve 22 is seated on the main valve seat 21e, the seal portion 22b closes the main valve port 21 f.
Further, a pilot port 22d and a communication passage 22e are formed in the center of the seal portion 22b, and the pilot port 22d communicates with the secondary side joint 21b via the communication passage 22e and the main valve port 21 f. Further, a gap is provided between the piston valve 22 and the guide hole 21h of the cylinder portion 21B, and the fluid on the primary side joint 21a side can flow into the back space of the piston valve 22 through the gap.
The operation unit 3 includes: a cylindrical plunger tube 31 centered on the axis L, a plunger 32 inserted in the plunger tube 31 and made of a magnetic material, an attractor 33 fixed to an upper end of the plunger tube 31 and made of a magnetic material, and a plunger spring 34 disposed between the plunger 32 and the attractor 33.
The plunger tube 31 is fitted coaxially with the guide hole 21h with respect to the cylinder portion 21B, and the periphery of the end portions of the plunger tube 31 and the cylinder portion 21B is fixed by brazing or the like. The plunger 32 is disposed in the plunger tube 31 so as to be slidable in the direction of the axis L (vertical direction). A conical pilot valve 32a is formed at the lower end of the plunger 32, and the pilot valve 32a opens and closes the pilot port 22d of the piston valve 22.
With the above configuration, the valve device of the embodiment is provided in the refrigeration cycle, and the high-pressure refrigerant flows in from the primary-side joint 21a and the refrigerant flows out from the secondary-side joint 21 b. When the electromagnetic coil 10 is not energized (non-energized), the state is shown in fig. 1, and the plunger 32 is positioned apart from the attractor 33 by the biasing force of the plunger spring 34 and the weight of the plunger 32. At this time, the pilot valve 32a closes the pilot port 22 d. The piston valve 22 descends together with the plunger 32 (pilot valve 32a), and closes the main valve port 21f, thereby blocking the refrigerant passage. At this time, the back space of the piston valve 22 becomes high pressure, and the closed state by the piston valve 22 can be reliably maintained.
When the electromagnetic coil 10 is energized, a suction force is generated between the attractor 33 and the plunger 32, the plunger 32 rises, and the pilot valve 32a is separated from the pilot port 22 d. Thereby, the back space of the piston valve 22 is communicated with the secondary side joint 21b to become low pressure. Thus, the piston valve 22 is separated from the main valve port 22f to be in an open state by a lift force generated by a pressure difference between the back space of the piston valve 22 and the inside of the primary side joint 21a and an elastic force of the valve opening spring 22c, and the refrigerant flows from the primary side joint 21a to the secondary side joint 21 b.
Fig. 2 is a main-part enlarged cross-sectional view showing a state before the solenoid coil 10 of the first embodiment is attached to the valve body portion 20, and fig. 3 is a main-part enlarged cross-sectional view showing a state after the solenoid coil 10 of the first embodiment is attached to the operating portion 3 (valve body portion 20). As shown in fig. 2, the outer periphery of the spacer member 4 has a diameter larger than the inner diameter of the operating portion insertion hole 13A. The operation portion insertion hole 13A and the step portion of the gasket fitting hole 13B are formed as an abutting portion 131 forming an annular flat surface, and the outer peripheral portion 41 of the lower end surface of the gasket member 4 can abut against the abutting portion 131 in a state before the electromagnetic coil 10 is attached to the operation portion 3. That is, the distance from the contact portion 131 to the inner surface of the substrate portion 11a of the housing 11 is greater than the height (length in the direction of the axis L) of the pad member 4, and in a state where the outer peripheral portion 41 is in contact with the contact portion 131, there is a gap between the inner surface of the substrate portion 11a and the upper surface of the pad member 4.
In this way, in the state before the electromagnetic coil 10 is attached to the operating portion 3, the spacer member 4 is loosely fitted between the base plate portion 11a of the case 11 and the operating portion insertion hole 13A so as to be movable in the axial line L direction of the operating portion insertion hole 13A. Therefore, for example, even if a force is applied to the pad member 4 from the substrate portion 11a side of the case 11, the pad member 4 does not press the contact portion 131 (the coil bobbin 13b), and breakage or the like of the coil bobbin 13b can be prevented.
Further, since the pad member 4 abuts on the abutting portion 131, the pad member 4 is not inserted into the operation portion insertion hole 13A, and the pad member 4 is prevented from coming off from the operation portion insertion hole 13A to the side opposite to the substrate portion 11 a. Thus, the outer peripheral portion 41 of the pad member 4 and the contact portion 131 form a "coming-off preventing structure". In a state where the electromagnetic coil 10 is attached to the valve body portion 20 as shown in fig. 3, the attractor 33 abuts against the lower surface of the cushion member 4, and the upper surface of the cushion member 4 abuts against the inner surface of the substrate portion 11 a. Thereby, the backing member 4 magnetically connects the substrate portion 11a and the attractor 33. Here, the spacer member 4 has a case-side bonding surface 4A that contacts the substrate portion 11a of the case 11 and an attractor-side bonding surface 4B that contacts the attractor 33. The attractor-side bonding surface 4B is in contact with the entire surface of the pad-side flat surface 33A of the attractor 33 facing the attractor-side bonding surface 4B. Further, the shell-side bonding surface 4A contacts the substrate portion 11a over an area larger than the entire surface of the pad-side flat surface 33A (facing surface) of the attractor 33. With this structure, since the case-side bonding surface 4A of the spacer member 4 is wide, the magnetic path area between the spacer member 4 and the case 11 (the substrate portion 11a) can be increased, and the magnetic efficiency can be improved.
Fig. 4 is a main part enlarged cross-sectional view showing a state before the solenoid coil 10 of the second embodiment is attached to the valve body portion 20, and fig. 5 is a main part enlarged cross-sectional view showing a state after the solenoid coil 10 of the second embodiment is attached to the operating portion 3 (valve body portion 20). In the following second to sixth embodiments, the point of difference from the first embodiment is mainly the "anti-slip structure", and the structure around the pad member will be described. The other structures are the same as those of the first embodiment, the same components as those of the first embodiment in the drawings of the respective embodiments are denoted by the same reference numerals as those of fig. 1 to 3, overlapping descriptions are omitted as appropriate, and the description of the first embodiment is referred to as appropriate.
In the second embodiment of fig. 5, the gasket fitting hole 13B of the first embodiment is eliminated, and the operating portion insertion hole 13A is extended to the substrate portion 11a side of the housing 11. Further, the spacer member 5 has a flange portion 51 formed on the outer periphery of the end portion facing the base plate portion 11a of the housing 11, and a part (almost all) of the spacer member 5 is inserted into the operating portion insertion hole 13A. Further, a mortar-shaped tapered portion 132 is formed in the opening periphery of the operating portion insertion hole 13A on the substrate portion 11a side, and the brim portion 51 of the spacer member 5 is disposed so as to face the tapered portion 132. The outer periphery of the collar 51 has a diameter larger than the inner diameter of the operating portion insertion hole 13A.
In this way, in the state before the electromagnetic coil 10 is attached to the operating portion 3, the flange portion 51 of the spacer member 5 is loosely fitted between the base plate portion 11a of the case 11 and the operating portion insertion hole 13A (or the tapered portion 132) so as to be movable in the direction of the axis L of the operating portion insertion hole 13A. Therefore, for example, even if a force is applied to the spacer member 5 from the substrate portion 11a side of the case 11, the flange portion 51 of the spacer member 5 does not press the tapered portion 132 (the bobbin 13b), and breakage of the bobbin 13b and the like can be prevented.
Further, with the above configuration, the brim portion 51 of the cushion member 5 can abut against the tapered portion 132 (opening peripheral portion). Therefore, even in a state before the electromagnetic coil 10 is attached to the operating portion 3, the spacer member 5 is prevented from coming off from the operating portion insertion hole 13A to the side opposite to the substrate portion 11 a. Thus, the brim portion 51 and the tapered portion 132 of the cushion member 5 have a "slip-off preventing structure". In a state where the electromagnetic coil 10 is attached to the valve body portion 20 as shown in fig. 5, the attractor 33 abuts against the lower surface of the spacer member 5, and the upper surface of the spacer member 5 abuts against the inner surface of the substrate portion 11 a. Thereby, the backing member 5 magnetically connects the substrate portion 11a and the attractor 33. In the second embodiment, the spacer member 5 also has a case-side bonding surface 5A that contacts the substrate portion 11a and an attractor-side bonding surface 5B that contacts the attractor 33, and the attractor-side bonding surface 5B contacts the entire surface of the spacer-side plane 33A of the attractor 33 that faces the attractor-side bonding surface 5B. Further, the shell-side bonding surface 5A contacts the substrate portion 11a over an area larger than the entire surface of the pad-side flat surface 33A (facing surface) of the attractor 33. Accordingly, since the case-side bonding surface 5A of the spacer member 5 is wide, the magnetic path area between the spacer member 5 and the case 11 (the substrate portion 11a) can be increased, and the magnetic efficiency can be improved.
Fig. 6 is a main-part enlarged sectional view showing a state after the solenoid coil 10 of the third embodiment is attached to the operating portion 3 (valve main body portion 20). In the third embodiment, the shape of the gasket fitting hole 13B of the first embodiment is deformed, and a gasket fitting hole 13C having a truncated cone shape is formed on the base plate portion 11a side of the operating portion insertion hole 13A, and the gasket fitting hole 13C has a tapered surface whose diameter increases with distance from the operating portion insertion hole 13A. The packing member 6 is formed in a truncated cone shape that is integrated with the packing fitting hole 13C. That is, the outer periphery 61 of the spacer member 6 has an outer diameter larger toward the substrate portion 11a than an inner diameter of the operating portion insertion hole 13A.
In this way, in a state before the electromagnetic coil 10 is attached to the operating portion 3, the outer periphery 61 of the spacer member 6 is loosely fitted between the base plate portion 11a of the case 11 and the operating portion insertion hole 13A (or the spacer fitting hole 13C) so as to be movable in the axis L direction of the operating portion insertion hole 13A. Therefore, for example, even if a force is applied to the spacer member 6 from the substrate portion 11a side of the case 11, the spacer member 6 does not press the spacer fitting hole 13C (the bobbin 13b), and breakage or the like of the bobbin 13b can be prevented.
Further, with the above configuration, the outer periphery 61 of the pad member 6 can be brought into contact with the inner surface of the pad fitting hole 13C. Therefore, even in a state before the electromagnetic coil 10 is attached to the operating portion 3, the spacer member 6 is prevented from coming off from the operating portion insertion hole 13A to the side opposite to the substrate portion 11 a. Thus, the outer periphery 61 of the packing member 6 and the conical packing fitting hole 13C have a "slip-off preventing structure". In a state where the electromagnetic coil 10 is attached to the operation portion 3 as shown in fig. 6, the attractor 33 abuts on the lower surface of the cushion member 6, and the upper surface of the cushion member 6 abuts on the inner surface of the substrate portion 11 a. Thereby, the backing member 6 magnetically connects the substrate portion 11a and the attractor 33. In the third embodiment, the spacer member 6 also has a case-side bonding surface 6A that contacts the substrate portion 11a and an attractor-side bonding surface 6B that contacts the attractor 33, and the attractor-side bonding surface 6B contacts the entire surface of the spacer-side plane 33A of the attractor 33 that faces the attractor-side bonding surface 6B. Further, the shell-side bonding surface 6A contacts the substrate portion 11a over an area larger than the entire surface of the pad-side flat surface 33A (facing surface) of the attractor 33. Accordingly, since the case-side coupling surface 6A of the spacer member 6 is wide, the magnetic path area between the spacer member 6 and the case 11 (the substrate portion 11a) can be increased, and the magnetic efficiency can be improved.
Fig. 7 is a main-part enlarged sectional view showing a state after the solenoid coil 10 of the fourth embodiment is attached to the operation portion 3 (valve main body portion 20). In the fourth embodiment, the gasket fitting hole 13B of the first embodiment is formed to have a smaller depth, and the gasket fitting hole 13D having an inner diameter larger than the inner diameter of the operation portion insertion hole 13A is formed, and the stepped portion between the operation portion insertion hole 13A and the gasket fitting hole 13D is formed as the contact portion 133 constituting an annular flat surface. Further, the pad member 7 is formed in the following shape: a collar portion 71 having an outer diameter larger than the inner diameter of the operating portion insertion hole 13A is formed on the outer periphery of the end portion facing the base plate portion 11a of the housing 11, and a stepped portion 7a that is integrated with the gasket fitting hole 13D and the operating portion insertion hole 13A is provided between the collar portion 71 and the portion of the gasket member 7 where the collar portion 71 is not formed.
Further, as shown in fig. 7, a gap is generated between the contact portion 133 and the stepped portion 7a of the spacer member 7, and it is understood that, in a state before the electromagnetic coil 10 is attached to the operating portion 3, the flange portion 71 of the spacer member 7 is loosely fitted between the base plate portion 11a of the housing 11 and the contact portion 133 so as to be movable in the axial line L direction of the operating portion insertion hole 13A. Therefore, for example, even if a force is applied to the pad member 7 from the substrate portion 11a side of the case 11, the pad member 7 does not press the contact portion 133 (the coil bobbin 13b), and breakage or the like of the coil bobbin 13b can be prevented.
Thus, in a state where a part of the pad member 7 is inserted into the operating portion insertion hole 13A, the step portion 7a of the pad member 7 can abut against the abutting portion 133 even before the electromagnetic coil 10 is mounted on the operating portion 3. Therefore, even in a state before the electromagnetic coil 10 is attached to the operating portion 3, the spacer member 7 is prevented from coming off from the operating portion insertion hole 13A to the side opposite to the substrate portion 11 a. Thus, the step portion 7a and the contact portion 133 of the pad member 7 form a "coming-off preventing structure". In a state where the electromagnetic coil 10 is attached to the operation portion 3 as shown in fig. 7, the attractor 33 abuts on the lower surface of the cushion member 7, and the upper surface of the cushion member 7 abuts on the inner surface of the substrate portion 11 a. Thereby, the backing member 7 magnetically connects the substrate portion 11a and the attractor 33. In the fourth embodiment, the spacer member 7 also has a case-side bonding surface 7A that contacts the substrate portion 11a and an attractor-side bonding surface 7B that contacts the attractor 33, and the attractor-side bonding surface 7B contacts the entire surface of the spacer-side plane 33A of the attractor 33 that faces the attractor-side bonding surface 7B. Further, the shell-side bonding surface 7A contacts the substrate portion 11a over an area larger than the entire surface of the pad-side flat surface 33A (facing surface) of the attractor 33. Accordingly, since the case-side coupling surface 7A of the spacer member 7 is wide, the magnetic path area between the spacer member 7 and the case 11 (the substrate portion 11a) can be increased, and the magnetic efficiency can be improved.
Fig. 8 is a main-part enlarged sectional view showing a state after the solenoid coil 10 of the fifth embodiment is attached to the operating portion 3 (valve main body portion 20). In the fifth embodiment, the length of the pad member 8 is longer than that of the pad member 4 in the first embodiment, and accordingly, the concave portion 111 is provided in the substrate portion 11 a' of the housing 11.
Further, as in the first embodiment, the outer periphery of the spacer member 8 has a diameter larger than the inner diameter of the operating portion insertion hole 13A, and the outer periphery 81 of the lower end surface of the spacer member 8 can abut against the abutting portion 131 in a state before the electromagnetic coil 10 is attached to the operating portion 3. Further, as shown in fig. 8, since a gap is generated between the contact portion 131 and the outer peripheral portion 81 of the lower end surface of the spacer member 8, it is understood that the outer peripheral portion 81 of the lower end surface of the spacer member 8 is loosely fitted between the substrate portion 11a of the housing 11 and the operation portion insertion hole 13A (contact portion 131) so as to be movable in the axial line L direction of the operation portion insertion hole 13A in a state before the electromagnetic coil 10 is attached to the operation portion 3. Therefore, for example, even if a force is applied to the pad member 8 from the substrate portion 11a side of the case 11, the pad member 8 does not press the contact portion 133 (the coil bobbin 13b), and breakage or the like of the coil bobbin 13b can be prevented.
Further, since the pad member 8 abuts on the abutting portion 131, the pad member 8 is not inserted into the operating portion insertion hole 13A, and the pad member 8 is prevented from coming off from the operating portion insertion hole 13A to the side opposite to the substrate portion 11 a'. Thus, the outer peripheral portion 81 and the abutting portion 131 of the pad member 8 have the "coming-off preventing structure". In a state where the electromagnetic coil 10 is attached to the operation portion 3 as shown in fig. 8, the attractor 33 abuts on the lower surface of the cushion member 8, and the upper surface of the cushion member 8 abuts on the inner surface of the concave portion 111 of the substrate portion 11 a'. Thereby, the backing member 8 magnetically connects the substrate portion 11a and the attractor 33. In the fifth embodiment, the spacer member 8 also has a case-side bonding surface 8A that contacts the substrate portion 11a and an attractor-side bonding surface 8B that contacts the attractor 33, and the attractor-side bonding surface 8B contacts the entire surface of the spacer-side plane 33A of the attractor 33 that faces the attractor-side bonding surface 8B. Further, the shell-side bonding surface 8A contacts the substrate portion 11a over an area larger than the entire surface of the pad-side flat surface 33A (facing surface) of the attractor 33. Accordingly, since the case-side coupling surface 8A of the spacer member 8 is wide, the magnetic path area between the spacer member 8 and the case 11 (the substrate portion 11a) can be increased, and the magnetic efficiency can be improved.
Fig. 9 is a main-part enlarged sectional view showing a state after the solenoid coil 10 of the sixth embodiment is attached to the operating portion 3 (valve main body portion 20). In the sixth embodiment, the gasket fitting hole 13B of the first embodiment is eliminated. Further, in the spacer member 9, a collar portion 91 is formed on the outer periphery of the end portion facing the substrate portion 11a of the housing 11, a part (almost all) of the spacer member 9 is inserted into the operating portion insertion hole 13A, and the collar portion 91 is disposed between the bobbin 13 b' and the substrate portion 11a so that the collar portion 91 faces the opening peripheral portion 134 of the operating portion insertion hole 13A on the substrate portion 11a side. That is, the opening peripheral portion 134 constitutes an abutting portion with respect to the brim portion 91. The outer periphery of the collar 91 has a diameter larger than the inner diameter of the operating portion insertion hole 13A.
Further, as shown in fig. 9, since a gap is generated between the opening peripheral portion 134 (abutting portion) of the operating portion insertion hole 13A and the collar portion 91 of the spacer member 9, it is understood that the collar portion 91 of the spacer member 9 is loosely fitted between the base plate portion 11a of the case 11 and the opening peripheral portion 134 (abutting portion) so as to be movable in the axis L direction of the operating portion insertion hole 13A in a state before the electromagnetic coil 10 is attached to the operating portion 3. Therefore, for example, even if a force is applied to the spacer member 9 from the substrate portion 11a side of the case 11, the spacer member 9 does not press the opening periphery portion 134 (the bobbin 13b), and breakage or the like of the bobbin 13b can be prevented.
Further, with the above configuration, the flange portion 91 of the spacer member 9 can be brought into contact with the opening peripheral portion 134 (contact portion) of the operation portion insertion hole 13A. Thus, even in a state before the electromagnetic coil 10 is attached to the operating portion 3, the spacer member 9 is prevented from coming off from the operating portion insertion hole 13A to the side opposite to the substrate portion 11 a. Thus, the brim 91 and the opening peripheral portion 134 of the pad member 9 have a "slip-off preventing structure". In a state where the electromagnetic coil 10 is attached to the operation portion 3 as shown in fig. 9, the attractor 33 abuts on the lower surface of the cushion member 9, and the upper surface of the cushion member 9 abuts on the inner surface of the substrate portion 11 a. Thereby, the backing member 9 magnetically connects the substrate portion 11a and the attractor 33. In the sixth embodiment, the spacer member 9 also has a case-side bonding surface 9A that contacts the substrate portion 11a and an attractor-side bonding surface 9B that contacts the attractor 33, and the attractor-side bonding surface 9B contacts the entire surface of the spacer-side plane 33A of the attractor 33 that faces the attractor-side bonding surface 9B. Further, the shell-side bonding surface 9A contacts the substrate portion 11a over an area larger than the entire surface of the pad-side flat surface 33A (facing surface) of the attractor 33. Accordingly, since the case-side bonding surface 9A of the spacer member 9 is wide, the magnetic path area between the spacer member 9 and the case 11 (the substrate portion 11a) can be increased, and the magnetic efficiency can be improved.
As described above, according to the present invention, the spacer member is not detached from the operating portion insertion hole, and therefore, the spacer member can be prevented from being lost due to detachment. Further, the valve main body portion can be made common, and a large-sized electromagnetic coil can be mounted on a small-sized valve main body portion. For example, since the DC drive electromagnetic coil is larger than the AC drive electromagnetic coil, the valve body portion can be shared between the AC drive and the DC drive by using the spacer member made of a magnetic material as in the present invention.
The stopper structure is not limited to the above embodiments, and may be any structure as long as the pad member is locked to the operation portion insertion hole. For example, in the present embodiment, the spacer member has a substantially cylindrical shape, but may be a prism such as a triangular prism or a quadrangular prism. The beads 51, 71, and 91 may not be formed over the entire circumference, or may be formed partially around the circumference.
The solenoid according to the present invention is applied to a valve device in which a solenoid is mounted to a valve main body having an operating portion in which a plunger is inserted into a cylindrical plunger housing and an attractor is fixed to an end portion of the plunger housing, and the valve main body causes a valve element to operate in conjunction with the plunger of the operating portion. In the above embodiments, the description has been given taking as an example the case where the valve device is an electromagnetic valve having one each of the primary-side joint and the secondary-side joint, but it may be a valve device such as a flow path switching valve that selectively flows a fluid to a plurality of secondary-side joints.
The embodiments of the present invention have been described in detail with reference to the drawings, and the specific configurations are not limited to these embodiments, and modifications of design and the like without departing from the scope of the present invention are included in the present invention.
Claims (8)
1. An electromagnetic coil which is attached to a valve body portion having an operating portion in which a plunger is inserted into a cylindrical plunger housing and an attractor is fixed to an end portion of the plunger housing, the electromagnetic coil being characterized in that the valve body portion operates a valve body in conjunction with the plunger of the operating portion, the electromagnetic coil comprising:
a molded coil in which an operating portion insertion hole for inserting the operating portion is formed;
a housing having a substrate portion facing the operation portion insertion hole of the mold coil; and
a pad member that magnetically connects the attractor and the substrate portion of the housing between the attractor of the operating portion and the substrate portion,
the coil device is provided with a retaining structure for preventing the pad member from being removed from the operating portion insertion hole of the molded coil to the side opposite to the substrate portion.
2. The electromagnetic coil of claim 1,
at least a part of the spacer member has an outer diameter larger than an inner diameter of the operating portion insertion hole, and the larger outer diameter part constitutes a part of the retaining structure.
3. The electromagnetic coil of claim 2,
in a state before being attached to the operating portion, the part of the pad member constituting a part of the retaining structure is loosely fitted between the base plate portion of the housing and the operating portion insertion hole so as to be movable in an axial direction of the operating portion insertion hole.
4. The electromagnetic coil according to any one of claims 1 to 3,
the spacer member has a case-side bonding surface that contacts the substrate portion of the case and an attractor-side bonding surface that contacts the attractor, and is configured such that the attractor-side bonding surface contacts the entire surface of the attractor that faces the attractor-side bonding surface, and the case-side bonding surface contacts the substrate portion over a larger area than the entire surface of the facing surface.
5. The electromagnetic coil according to any one of claims 1 to 4,
the operation portion insertion hole has a pad fitting hole on the base plate side, the pad fitting hole has an inner diameter larger than that of the operation portion insertion hole, the pad member is fitted in the pad fitting hole, and an end portion of the pad member abuts against a stepped portion of the pad fitting hole with respect to the operation portion insertion hole, thereby constituting the coming-off prevention structure.
6. The electromagnetic coil according to any one of claims 1 to 4,
the stopper structure is configured such that a collar portion having a larger diameter than the operating portion insertion hole is formed on the outer periphery of the pad member, and the collar portion abuts against the opening peripheral portion of the operating portion insertion hole on the base plate side.
7. The electromagnetic coil according to any one of claims 1 to 4,
the operation portion insertion hole has a gasket fitting hole on the base plate side, the gasket fitting hole has a tapered surface whose diameter increases as the distance from the operation portion insertion hole increases, the gasket member is fitted in the gasket fitting hole, and the outer peripheral surface of the gasket member abuts against the tapered surface, thereby constituting the anti-slip structure.
8. A valve device, characterized in that,
the electromagnetic coil according to any one of claims 1 to 7 is provided to the operating portion of the valve main body.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019110566A JP7130601B2 (en) | 2019-06-13 | 2019-06-13 | Electromagnetic coil and valve device |
| JP2019-110566 | 2019-06-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112081985A true CN112081985A (en) | 2020-12-15 |
| CN112081985B CN112081985B (en) | 2023-01-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010489193.7A Active CN112081985B (en) | 2019-06-13 | 2020-06-02 | Electromagnetic coil and valve device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7130601B2 (en) |
| CN (1) | CN112081985B (en) |
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| US20060011878A1 (en) * | 2004-07-15 | 2006-01-19 | Ford Motor Company | A control method and controller for a solenoid-operated electrohydraulic control valve |
| CN102629510A (en) * | 2011-02-04 | 2012-08-08 | 株式会社鹭宫制作所 | Molded coil and solenoid controlled valve using the same |
| CN202884193U (en) * | 2012-10-09 | 2013-04-17 | 中国航空工业集团公司上海航空测控技术研究所 | Three-way electromagnetic valve applied to airplane oxygen concentrator system |
| JP2013182914A (en) * | 2012-02-29 | 2013-09-12 | Saginomiya Seisakusho Inc | Mold coil, electromagnetic valve using mold coil, and manufacturing method of mold coil |
| CN204716439U (en) * | 2012-10-30 | 2015-10-21 | 德尔福国际运营卢森堡有限公司 | High pressure valve and the co-rail diesel fuel injection system comprising high pressure valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5986477B2 (en) * | 2012-10-18 | 2016-09-06 | 住友精化株式会社 | Paraffin manufacturing method and manufacturing apparatus |
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2019
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|---|---|---|---|---|
| GB1453333A (en) * | 1973-10-25 | 1976-10-20 | Saunier Duval | Solenoid valve for controlling the supply of gas to a burner |
| JPS58142910U (en) * | 1982-03-23 | 1983-09-27 | 高橋電機株式会社 | Magnetizing/demagnetizing self-holding solenoid |
| JPS5986477U (en) * | 1982-12-02 | 1984-06-11 | 株式会社鷺宮製作所 | Reversible proportional expansion valve |
| US5626165A (en) * | 1994-10-17 | 1997-05-06 | Hadsys, Inc. | Valve for re-circulating exhaust gas |
| JP2002250457A (en) * | 2001-02-23 | 2002-09-06 | Saginomiya Seisakusho Inc | Latch-type electromagnetic valve and four-way valve, and latch type electromagnetic coil therefor |
| US20060011878A1 (en) * | 2004-07-15 | 2006-01-19 | Ford Motor Company | A control method and controller for a solenoid-operated electrohydraulic control valve |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN112081985B (en) | 2023-01-03 |
| JP2020200938A (en) | 2020-12-17 |
| JP7130601B2 (en) | 2022-09-05 |
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