TW201716714A - Solenoid valve for more firmly ensuring ground connection - Google Patents

Abstract

The present invention provides a solenoid valve for more firmly ensuring the ground connection. The solenoid valve of the present invention is characterized by comprising: a valve main body 2 having a valve body 22 and a housing 21 for accommodating the valve body 22; a molding member 4 having a bobbin 41 formed as a cylinder, an electromagnetic coil 42 wound on the bobbin 41, a power plug 43 connected to an external power source, and an insulation molding resin 44, wherein the bobbin 41, the electromagnetic coil 42 and a portion of the power plug 43 are molded with the insulation molding resin 44; an insertion member 6 having a movable iron core 62, a cylindrical fixed iron core 61, and a rod body 621, wherein the movable iron core 62 is movable relative to the molding member 4 along the insertion direction for insertion of the molding member 4, the fixed iron core 61 is inserted into the molding member 4 without moving relative to the molding member 4 along the insertion direction and may attach the movable iron core 62 by electrifying the electromagnetic coil 42, the rod body 621 is inserted into the fixed iron core 61, and has one end connected to the movable iron core 62 and the other end connected to the valve body 22; and a yoke member 5 having a cylindrical portion allowing the insertion of the molding member 4, and a bottom portion formed at both ends of the cylindrical portion and formed with a hole allowing the insertion of the insertion member; wherein the power plug 43 is provided with a ground terminal 432 connected to the ground wire of the external power source, and the ground terminal 432 is electrically connected to the yoke member 5.

Description

The electromagnetic valve

The present invention relates to a solenoid valve that linearly moves a movable iron core.

Previously, there has been known a solenoid valve including an electromagnetic solenoid and a valve body that utilizes a coil to energize a fixed iron core, thereby linearly moving the movable iron core, and by a movable iron core To drive the valve of the valve body. Moreover, in recent years, the safety of the solenoid valve is required, and as a criterion for this safety, it is required to ensure that the grounding of the electromagnetic solenoid is conducted.

As a method of grounding the electromagnetic valve, a method of grounding conduction via a yoke member is exemplified. Here, a description will be given of a conventional electromagnetic valve that is grounded via a yoke member. Fig. 12 is a schematic cross-sectional view showing the configuration of a conventional electromagnetic valve. Fig. 13 is a front elevational view showing the configuration of a conventional molding member.

As shown in FIGS. 12 and 13, the prior solenoid valve is provided with a valve body 8 having a housing 81 and a valve body 82 built in the housing 81; and an electromagnetic solenoid 9, which The valve body 82 is driven. The electromagnetic solenoid 9 is constituted by a molding member 9a that is inserted through the molding member 9a and an insertion member 9b that is connected to the valve body 82 at one end. The insertion member 9b has a movable iron core 91 and a fixed iron core 92. The molding member 9a has a bobbin 93 formed into a cylindrical shape, the bobbin 93 allowing the insertion member 9b to be inserted, an electromagnetic coil 94 wound on the bobbin 93, and a yoke member 95 cooperating with the electromagnetic coil 94. The function constitutes a magnetic circuit; a molding resin 96 which molds the bobbin 93, the electromagnetic coil 94 and the yoke member 95; and a power plug 97 which is disposed outside the molding resin 96. The power plug 97 has two power supply terminals 971a and 971b connected to an external power source, and a ground terminal 972 connected to a ground line of an external power source. The power supply terminals 971a and 971b are electrically connected to the electromagnetic coil 94 via the wires 973a and 973b, and the ground terminal 972 is electrically connected to the conductive yoke member 95 via the wire 974. Further, the wires 973a, 973b and the wires 974 are molded together with the bobbin 93, the electromagnetic coil 94, and the yoke member 95 by molding the resin 96.

The yoke member 95 is formed in a cylindrical shape in the inside of the molded resin 96 so that the insertion member 9b can be inserted and surrounded around the electromagnetic coil 94. On the two bottom surfaces of the yoke member 95, insertion holes 951 through which the insertion member 9b is inserted are formed, and as shown in Fig. 13, the bottom surface on the valve body 8 side among the two bottom surfaces is exposed to the mold. The exterior of the resin 96 is made. In a state where the insertion member 9b is inserted into the electromagnetic solenoid 9, the movable iron core 91 contacts the edge portion of the insertion hole 951 such that the ground terminal 972 passes through the wire 974, the yoke member 95, and the movable iron core 91. It is electrically connected to the housing 81, and therefore, the housing of the solenoid valve is grounded.

Further, as a related art, a solenoid valve (see Patent Document 1) is known, and includes a metal valve body and an electromagnetic device that abuts against the valve body and operates the valve body. The electromagnetic device is a plunger block. And a coil assembly in which a connection member connected to the electric coil and a connection member for grounding are protruded upward, and the coil assembly and the magnetic circuit constituent member are made of resin. The molded component is electrically connected to the magnetic circuit constituting member, and the magnetic circuit constituting member is electrically connected to the valve body so as to expose the end portion on the contact surface.

[Prior Art Document] (Patent Document) Patent Document 1: Japanese Patent Laid-Open No. Hei 10-47525

[Problem to be Solved by the Invention] However, according to the previous solenoid valve shown in Figs. 12 and 13, when the electromagnetic coil 94 and the yoke member 95 are molded by molding the resin 96, molding is performed. The resin 96 wraps around to the edge portion of the insertion hole 951 of the yoke member 95, so that both the yoke member 95 and the movable iron core 91 are electrically insulated, and sufficient ground conduction is not ensured. Further, in the valve body in which an insulating coating material is applied to the surface to prevent corrosion or the like, it is difficult to ensure that the end portion of the magnetic path constituent member abuts against the valve body to ensure ground conduction.

The embodiment of the present invention has been developed to solve the above problems, and an object thereof is to provide an electromagnetic valve capable of more reliably ensuring ground conduction.

[Means for Solving the Problems] In order to solve the above problems, a solenoid valve according to the present embodiment includes a conductive valve body having a valve body and a casing accommodating the valve body, and a molded member having a cylindrical bobbin, an electromagnetic coil wound around the bobbin, a power plug connected to an external power source, and an insulating mold resin, wherein the insulating mold resin has the bobbin, the electromagnetic coil, and a part of the power plug is molded; the insertion member has a movable iron core, a cylindrical fixed iron core, and a rod body, and the movable iron core is movable in the insertion direction relative to the molding member to insert the mold a fixing member that inserts the molding member in such a manner that it cannot move in the insertion direction with respect to the molding member, and adsorbs the movable iron core by energizing the electromagnetic coil, the rod body being inserted into the fixed iron core One end is connected to the aforementioned movable iron core and the other end thereof is connected to the aforementioned valve body; and a yoke member having a cylindrical portion through which the aforementioned molding member can be inserted, Formed at both ends of the tubular portion and formed with a bottom portion of a hole through which the insertion member can be inserted; wherein the power plug has a ground terminal connected to a grounding wire of the external power source, the ground terminal and the foregoing The yoke members are electrically connected.

Further, the solenoid valve of the present embodiment includes a conductive valve body having a valve body and a casing that houses the valve body, and a molding member having a bobbin formed in a cylindrical shape and wound An electromagnetic coil on the bobbin, a power plug connected to an external power source, and an insulating molding resin, the insulating molding resin molding the bobbin, the electromagnetic coil, and a part of the power plug; And an insertion member having a movable iron core, a cylindrical fixed iron core, and a rod body, wherein the movable iron core is movable in the insertion direction relative to the molding member to be inserted into the molding member, and the fixed iron core cannot Inserting the molding member in a manner of moving in the insertion direction relative to the molding member and adsorbing the movable iron core by energization of the electromagnetic coil, the rod body being inserted into the fixed iron core, one end of which is connected to the movable body a core and the other end thereof is connected to the aforementioned valve body; wherein the power plug has a ground terminal connected to a ground line of the external power source, the ground terminal and Disposed in the inner peripheral wall of the bobbin is electrically connected to the contact terminal is inserted through the abutment member.

[Effects of the Invention] According to the embodiment of the present invention, it is possible to ensure the grounding conduction more reliably.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the valve body side in the moving direction of the movable iron core is referred to as the front side, and the connection terminal (power supply plug) side in the vertical direction orthogonal to the moving direction of the movable iron core is referred to as the upper side.

(First Embodiment) First, the overall configuration of a solenoid valve according to a first embodiment will be described. Fig. 1 is a schematic cross-sectional view showing the configuration of a solenoid valve according to a first embodiment. Fig. 2 is an exploded perspective view showing the configuration of the solenoid valve of the first embodiment. In addition, in the first figure, the electromagnetic valve is a state viewed from a side surface orthogonal to the moving direction and the vertical direction of the movable iron core, and a part of the first drawing is a cross-sectional view or a perspective view.

As shown in FIG. 1 and FIG. 2, the solenoid valve 1 of the present embodiment is a direction switching valve that controls the movement direction of the hydraulic actuator, the forward movement, the stop, and the like, and includes an electromagnetic solenoid 3 that is provided with an electromagnetic solenoid. The tube 3 has a conductive valve body 2 including a valve body 22, a housing 21 that houses the valve body 22, a molding member 4, a yoke member 5, a insertion member 6, and a nut member 7. Further, in the present embodiment, the casing 21 and the valve body 22 are made of metal, and an insulating coating material is applied to the outer wall surface of the casing 21.

The molding member 4 is provided with a bobbin 41 which is formed in a cylindrical shape into which the insertion member 6 can be inserted, an electromagnetic coil 42 which is wound around the bobbin 41, a power plug 43, and an insulating molding resin. 44, which molds the bobbin 41, the electromagnetic coil 42, and a portion of the power plug 43. Further, in the molding member 4, the power plug 43 is provided to protrude toward the outer diameter direction of the molding member 4. Further, the bobbin 41 is formed in a shape having a cylindrical portion formed into a cylinder, and a flange formed at both ends of the tubular portion so as to protrude toward the outer circumferential direction of the tubular portion.

The yoke member 5 is a magnetic path constituting member, and is formed into a cylindrical member that can accommodate the molding member 4 and can be inserted into the insertion member 6, and the yoke member 5 is a first yoke member 5a made of metal. And the second yoke member 5b. The first yoke member 5a is a member formed into a cylindrical shape having a bottom portion on the bottom surface on the rear side in the moving direction of the movable iron core and opening on the front bottom surface, and forming a portion in which the power plug 43 is exposed to the outside. A part of the molded member 4 is exposed. The second yoke member 5b is a member formed to open the bottom surface of the yoke member 5 at the opening of the first yoke member 5a, and is formed with a hole through which the insertion member 6 can be inserted. In the assembly of the solenoid valve 1, after the molding member 4 is inserted into the first yoke member 5a, the second yoke member 5b is fitted on the opening of the first yoke member 5a. At this time, the inner peripheral wall in the vicinity of the opening of the first yoke member 5a is in close contact with the edge portion of the second yoke member 5b to be electrically connected. Further, the molding member 4 inserted into the yoke member 5 is in close contact with the inner wall of the yoke member 5 except for the place where the power plug 43 is provided.

The insertion member 6 includes a fixed iron core 61, a movable iron core 62, a tubular member 63, and an end plug member 64. The fixed iron core 61 is provided at the forefront of the insertion member 6, and is a member that sucks the movable iron core 62 by energization of the electromagnetic coil 42. The tubular member 63 is a tubular member that is open at the front end and is connected to the fixed iron core 61, and is separated from the fixed iron core 61 by the internal space. Further, in the state in which the insertion member 6 is inserted into the molding member 4 and the yoke member 5, a part of the rear end portion side of the tubular member 63 protrudes from the molding member 4 and the yoke member 5. The movable iron core 62 is inserted into the tubular member 63, and is moved toward the valve body 22 side in the internal space by being adsorbed by the fixed iron core 61. Further, a rod body 621 extending forward is provided at a front end portion of the movable iron core 62. The rod body 621 is inserted into the fixed iron core 61 and connected to the rear end portion of the valve body 22. The plug member 64 closes the internal space by being inserted into a hole formed in the rear bottom surface of the tubular member 63. Further, in a state in which the insertion member 6 is inserted into the molding member 4 and the yoke member 5, the outer peripheral wall of the fixed core 61 abuts against the edge portion of the hole of the second yoke member 5b. Further, since the fixed core 61 has a part of the front side inserted into the casing 21, a part of the outer circumference thereof is in electrical contact with the inner wall of the casing 21. Further, the fixed iron core 61 may be configured to be in electrical contact with the casing 21 via the valve body 22.

The nut member 7 is a cylindrical member through which a part of the tubular member 63 is inserted, and is screwed to the outer wall of the rear side bottom surface of the first yoke member 5a on the front side, and is screwed to the cylindrical member 63 at the rear side. A part of the cylindrical member 63 protrudes from the molded member 4 and the yoke member 5 at the rear side end portion. By these screwing, the insertion member 6 is fixed to the yoke member 5 and the molding member 4 inserted into the yoke member 5.

Next, the power plug 43 and the contact terminal will be described. Fig. 3 is a side cross-sectional view showing the configuration of a molding member and a yoke member according to the first embodiment. Fig. 4 is a view showing the configuration of a leaf spring terminal. Fig. 5 is a view showing the configuration of a spike terminal. Fig. 6 is a view showing the configuration of a spring terminal. Fig. 7 is a view showing the configuration of a screw terminal. Fig. 8 is a view showing the configuration of the push-in pin terminal.

As shown in Fig. 3, the power plug 43 has two power supply terminals 431a and 431b connected to an external power supply, and a ground terminal 432 connected to a ground line of an external power supply. The power supply terminals 431a and 431b are electrically connected to the electromagnetic coil 42 via the conductive members 433a and 433b, respectively; the ground terminal 432 is electrically connected to the leaf spring terminal 45 as a contact terminal in contact with the yoke member 5 via the conductive member 434. . The leaf spring terminal 45 is provided at the front end portion of the bobbin 41, specifically, the surface of the front side flange of the bobbin 41 that faces the second yoke member 5b. The conductive members 433a, 433b and the conductive member 434 are molded together with the bobbin 41 and the electromagnetic coil 42 by molding the resin 44. The leaf spring terminal 45 is molded by molding the resin 44 so that at least a portion thereof is exposed to the outside of the abutment portion of the second yoke member 5b.

As shown in Fig. 4, the leaf spring terminal 45 is a member formed by bending a thin plate-shaped and conductive metal piece so as to be pressed against the contact target surface in contact with the contact object, and the leaf spring is used. The terminal 45, when molded into the molded resin 44, is molded, except at least the abutting surface and the pressing abutting surface to generate elasticity.

Thus, the leaf spring terminal 45 that has been electrically connected to the ground terminal 432 abuts against the second yoke member 5b, and the second yoke member 5b abuts against the fixed core 61, whereby the ground terminal 432 passes through the conductive member 434, the leaf spring The terminal 45, the second yoke member 5b, and the fixed iron core 61 are electrically connected to the casing 21. Therefore, the housing of the solenoid valve 1 is grounded.

Further, other contact terminals may be used instead of the leaf spring terminal 45. For example, as the contact terminal, a pointed terminal 45a as shown in Fig. 5, a spring terminal 45b as shown in Fig. 6, a screw terminal 45c as shown in Fig. 7, and a screw terminal 45c as shown in Fig. 8 may be used. The pin terminal 45d is pressed. The pointed terminal 45a is an electroconductive member having a sharp portion facing the direction of the contact object. The spring terminal 45b is a conductive compression coil spring having a pressing force toward the direction in which the object is contacted. The screw terminal 45c is a conductive screw member having a head portion and a screw portion, and the screw portion is inserted into the flange portion of the bobbin 41 so that the head portion abuts against the contact object, thereby functioning as a contact terminal. The press-in pin terminal 45d is a conductive pin member having a pressing portion and a press-fitting portion, and the pressing portion is pressed to bring the pressing portion into contact with the contact object, and the press-in portion is pressed into the set bobbin 41. The press-fitting hole in the flange portion functions as a contact terminal.

(Second embodiment) Next, a configuration of a solenoid valve according to a second embodiment will be described. With respect to the solenoid valve of the first embodiment described above, the contact terminals of the solenoid valve of the second embodiment are provided at different positions. Hereinafter, the configuration similar to that of the first embodiment will be omitted, and the position of the contact terminal different from the first embodiment will be described. Fig. 9 is a side cross-sectional view showing the configuration of a molding member and a yoke member according to the second embodiment.

As shown in Fig. 9, in the second embodiment, the leaf spring terminal 45 as the contact terminal is provided with the rear end surface of the bobbin 41, specifically, the rear side flange of the bobbin 41 is provided. The bottom surface of a yoke member 5a faces the surface. The leaf spring terminal 45 is molded by molding the resin 44 so that at least a portion thereof abuts against the first yoke member 5a to be exposed to the outside. Further, the leaf spring terminal 45 may be provided on the outer wall surface of the molding member 4 facing the inner wall of the cylindrical portion of the first yoke member 5a. Further, in the second embodiment, instead of the leaf spring terminal 45, a pointed terminal 45a, a spring terminal 45b, a screw terminal 45c, or a press-in pin terminal 45d may be used as the contact terminal.

Thus, the leaf spring terminal 45 that has been electrically connected to the ground terminal 432 abuts against the first yoke member 5a, and the second yoke member 5b that has been fitted to the first yoke member 5a abuts against the fixed iron core 61, thereby grounding The terminal 432 is electrically connected to the casing 21 via the conductive member 434, the leaf spring terminal 45, the first yoke member 5a, the second yoke member 5b, and the fixed iron core 61. Therefore, the housing of the solenoid valve 1 is grounded.

(Third Embodiment) Next, a configuration of a solenoid valve according to a third embodiment will be described. The contact terminals of the solenoid valve of the third embodiment are provided at different positions with respect to the solenoid valves of the first embodiment and the second embodiment. Hereinafter, the configurations similar to those of the first embodiment and the second embodiment will be omitted, and the positions of the contact terminals different from the first embodiment and the second embodiment will be described. Fig. 10 is a side cross-sectional view showing the configuration of a molding member and a yoke member according to a third embodiment.

As shown in Fig. 10, in the third embodiment, the leaf spring terminal 45 as the contact terminal is provided with the inner peripheral wall surface of the bobbin 41, that is, the insertion hole to be inserted by the insertion member 6. The inner peripheral wall of the hole. Further, the leaf spring terminal 45 is provided at a position on the inner peripheral wall surface at a position where the fixed iron core 61 is disposed when the insertion member 6 is inserted and fixed to the nut member 7. Therefore, one end thereof is connected to the conductive member 434 of the ground terminal 432, and a part thereof is along the inner peripheral wall surface of the bobbin 41 or the cylindrical portion of the bobbin 41, and the other end is connected to the leaf spring terminal 45. Further, when the tubular member 63 has electrical conductivity, the position at which the leaf spring terminal 45 is provided may be any place as long as it is the inner peripheral wall surface of the bobbin 41. Further, in the third embodiment, instead of the leaf spring terminal 45, the pointed terminal 45a, the spring terminal 45b, the screw terminal 45c, or the press-in pin terminal 45d may be used as the contact terminal as long as the insertion member 6 is not hindered. It is sufficient for the insertion of the molded member 4.

Thus, the leaf spring terminal 45 that has been electrically connected to the ground terminal 432 abuts against the fixed iron core 61, whereby the ground terminal 432 is electrically connected to the housing via the conductive member 434, the leaf spring terminal 45, and the fixed iron core 61. twenty one. Therefore, the housing of the solenoid valve 1 is grounded.

(Fourth embodiment) Next, a configuration of a solenoid valve according to a fourth embodiment will be described. The solenoid valve of the fourth embodiment differs from the solenoid valves of the first to third embodiments described above in that grounding is performed without passing through the contact terminals. Hereinafter, the configuration similar to that of the first to third embodiments will be omitted, and the configuration different from the first to third embodiments will be described. Fig. 11 is a side cross-sectional view showing the configuration of a molding member and a yoke member according to a fourth embodiment.

As shown in Fig. 11, in the fourth embodiment, one end is connected to the conductive member 434 of the ground terminal 432, and the other end thereof is exposed from the yoke member 5 in the molded member 4 to the external space, specifically, The other end of the conductive member 434 is exposed to the outside of the molded member 4 from the vicinity of the place where the power plug 43 is disposed. Further, the exposed other end is connected to the outer peripheral wall surface of the yoke member 5. Specifically, the exposed other end is directly soldered to the outer wall surface of the cylindrical portion of the first yoke member 5a to be joined. Here, the connection position of the other end is preferably in the vicinity of the power plug 43.

Thus, the conductive member 434 has one end electrically connected to the ground terminal 432 and the other end connected to the first yoke member 5a, whereby the ground terminal 432, via the conductive member 434, the first yoke member 5a, the second yoke The member 5b and the fixed core 61 are electrically connected to the housing 21. Therefore, the housing of the solenoid valve 1 is grounded.

According to the solenoid valve described above, for the conductive member whose one end is electrically connected to the ground terminal 432, the other end of the conductive member or the contact terminal connected to the other end is directly or indirectly electrically connected to the fixed iron core. Thereby, the grounding conduction can be ensured without being electrically connected to the outer wall surface of the housing. Even in the case of a case in which an insulating coating is applied to the outer wall to prevent corrosion, and the conductivity of the outer wall of the case is lowered due to corrosion, the grounding conduction can be surely ensured. Further, by electrically connecting the ground terminal to the case via the insertion member, the degree of freedom in the position at which the other end of the conductive member is exposed can be raised for the conductive member whose one end is electrically connected to the ground terminal. Even improve the design freedom of the solenoid valve.

The embodiments of the present invention are all examples and are not intended to limit the scope of the invention. The present invention can be implemented in various other forms, and various omissions, substitutions and changes can be made without departing from the scope of the invention. The scope of the invention and the scope of the invention are intended to be included in the scope of the invention and the scope of the invention.

1‧‧‧ solenoid valve
2, 8‧‧‧ valve body
3, 9‧‧‧Electromagnetic solenoid
4, 9a‧‧‧Molded components
5, 95‧‧‧ yoke members
5a‧‧‧First yoke member
5b‧‧‧second yoke member
6, 9b‧‧‧ plug-in components
7‧‧‧ Nut components
21, 81‧‧‧ shell
22, 82‧‧‧ valve body
41, 93‧‧‧ spool
42, 94‧‧ ‧ electromagnetic coil
43, 97‧‧‧Power plug
44, 96‧‧·Molded resin
45‧‧‧ plate spring terminal
45a‧‧‧ pointed terminal
45b‧‧‧Spring Terminal
45c‧‧‧ screw terminal
45d‧‧‧Indented pin terminal
61, 91‧‧‧ movable iron core
62, 92‧‧‧ Fixed iron core
63‧‧‧Cylinder members
64‧‧‧End plug components
431a, 431b, 971a, 971b‧‧‧ power terminals
432, 972‧‧‧ grounding terminal
433a, 433b, 434‧‧‧ conductive members
621‧‧‧ rod body
951‧‧‧ inserted through hole
973a, 973b, 974‧‧‧ wires

Fig. 1 is a schematic cross-sectional view showing the configuration of a solenoid valve according to a first embodiment. Fig. 2 is an exploded perspective view showing the configuration of the solenoid valve of the first embodiment. Fig. 3 is a side cross-sectional view showing the configuration of a molding member and a yoke member according to the first embodiment. Fig. 4 is a view showing the configuration of a leaf spring terminal. Fig. 5 is a view showing the configuration of a pointed terminal. Fig. 6 is a view showing the configuration of a spring terminal. Fig. 7 is a view showing the configuration of a screw terminal. Fig. 8 is a view showing the configuration of the push-in pin terminal. Fig. 9 is a side cross-sectional view showing the configuration of a molding member and a yoke member according to the second embodiment. Fig. 10 is a side cross-sectional view showing the configuration of a molding member and a yoke member according to a third embodiment. Fig. 11 is a side cross-sectional view showing the configuration of a molding member and a yoke member according to a fourth embodiment. Fig. 12 is a schematic cross-sectional view showing the configuration of a conventional electromagnetic valve. Fig. 13 is a front elevational view showing the configuration of a conventional molding member.

Domestic deposit information (please note according to the order of the depository, date, number)

Foreign deposit information (please note in the order of country, organization, date, number)

(Please change the page separately) No

1‧‧‧ solenoid valve

2‧‧‧ valve body

3‧‧‧Electromagnetic solenoid

4‧‧‧Molded components

5a‧‧‧First yoke member

5b‧‧‧second yoke member

6‧‧‧Plug-in components

7‧‧‧ Nut components

21‧‧‧ housing

22‧‧‧ valve body

41‧‧‧ spool

42‧‧‧Electromagnetic coil

43‧‧‧Power plug

44‧‧‧Molded resin

45‧‧‧ plate spring terminal

61‧‧‧ movable iron core

62‧‧‧Fixed core

63‧‧‧Cylinder members

64‧‧‧End plug components

431a, 431b‧‧‧ power terminals

432‧‧‧ Grounding terminal

433a, 433b, 434‧‧‧ conductive members

621‧‧‧ rod body

Claims (6)

A solenoid valve comprising: a valve body having conductivity; a valve body; and a housing for housing the valve body; and a molding member having a bobbin formed in a cylindrical shape and wound around the bobbin An electromagnetic coil, a power plug connected to an external power source, and an insulating molding resin, the insulating mold resin molding the bobbin, the electromagnetic coil, and a part of the power plug; a plug-in member a movable iron core, a cylindrical fixed iron core, and a rod body, wherein the movable iron core is movable in the insertion direction relative to the molding member to be inserted through the molding member, and the fixed iron core is incapable of being aligned in the insertion direction The molding member is inserted into the molding member and is attracted by the electromagnetic coil to attract the movable iron core. The rod body is inserted into the fixed iron core, one end of which is connected to the movable iron core and the other end of which is connected. a valve body; and a yoke member having a tubular portion through which the molding member can be inserted, and a both ends formed at the tubular portion and formed with the insertion member a bottom of the hole through which the plug can be inserted; wherein the power plug has a ground terminal connected to a ground line of the external power source, and the ground terminal is electrically connected to the yoke member. The solenoid valve according to claim 1, wherein the ground terminal is electrically connected to a contact terminal provided on an outer wall of the mold member, and the contact terminal abuts against an inner wall of the yoke member. The solenoid valve according to claim 2, wherein the contact terminal is disposed at a position opposed to a bottom of the yoke member. The solenoid valve according to claim 2, wherein the contact terminal is provided at a position facing the cylindrical portion of the yoke member. The solenoid valve of claim 1, wherein the ground terminal is electrically connected to an outer wall of the yoke member. A solenoid valve comprising: a valve body having conductivity; a valve body; and a housing for housing the valve body; and a molding member having a bobbin formed in a cylindrical shape and wound around the bobbin An electromagnetic coil, a power plug connected to an external power source, and an insulating molding resin molding the bobbin, the electromagnetic coil, and a part of the power plug; and a plug-in member And a movable iron core, a cylindrical fixed iron core, and a rod body, wherein the movable iron core is movable in the insertion direction relative to the molding member to be inserted through the molding member, and the fixed iron core is not in the insertion direction Inserting the molded member with respect to the movement of the molding member and adsorbing the movable iron core by energizing the electromagnetic coil, the rod body is inserted into the fixed iron core, one end of which is connected to the movable iron core and the other end thereof Connected to the aforementioned valve body; wherein the power plug has a ground terminal connected to a ground line of the external power source, and the ground terminal is disposed in the foregoing The inner peripheral wall of the bobbin is electrically connected to the contact terminal abutting the insertion member.