JPH0541106U - solenoid - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a solenoid equipped with a terminal block so as to obtain sufficient strength against external force without being affected by the size of the solenoid itself. A terminal member 26 including a pedestal portion 28 and a case portion 27 is formed by fixing one end of a fixed iron core 16 to the valve body 15 and protruding the other end from the coil block 11 to form a protrusion.
The case portion 27 of the coil block 11 via the protruding shaft portion.
It is externally fitted to the terminal member 2 and fixed with the fastening member 40.
A terminal block 29 having male electrode metal fittings 30A and 30B and a grounding metal fitting 32 provided upright is provided on the pedestal portion 28 of 6, and the external force applied to the terminal block 29 is received by the fixed iron core 16 and supported by the valve body 15.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a solenoid for a solenoid valve equipped with a terminal block on which a male electrode fitting for guiding electricity to a coil is provided upright.

[0002]

[Prior Art]

 Conventionally, as this type of solenoid, there is one disclosed in Japanese Patent Publication No. 61-32534. This product uses a coil wound around a bobbin, a yoke that wraps around the outer circumference of the coil and bobbin, a male electrode fitting that guides electricity to the coil, and a terminal block that stands on a grounding fitting made of synthetic resin. To form a coil block by integrally molding into a coil block, insert a pipe into the cylindrical hole of the bobbin that composes this coil block, and insert and fix a fixed iron core with an axial through hole at one end of this pipe. There is shown a solenoid in which a movable iron core is inserted so as to advance and retreat toward a fixed iron core, and an open end of a pipe into which the movable iron core is inserted is sealed with a lid member that is fixed to a coil block. To drive the solenoid, power can be supplied to the coil by inserting a plug with a female electrode fitting into the male electrode fitting on the terminal block, simplifying the electrical wiring when mounting the valve to the device. Have to get.

[0003]

[Problems to be solved by the device]

 However, in such a configuration, the coil block and the terminal block are integrally provided by the synthetic resin that molds the coil block, and when implementing it for a small solenoid, the thickness of the synthetic resin layer of the coil block is thin. Therefore, there is a problem that sufficient strength for fixing the terminal block to the coil block cannot be obtained against the external force applied to the terminal block.

The present invention solves such a problem, and provides a solenoid equipped with a terminal block, which has sufficient strength against external force without being affected by the size of the solenoid itself. The purpose is to do.

[0005]

[Means for Solving the Problems]

 For this reason, the present invention provides a fixed core whose one end can be fixedly attached to the valve body, a coil block which is wound around a coil and can be fitted onto the outer periphery of the fixed core, and a fixed core protruding from the side surface of the coil block. And a fastening member that integrally fastens the coil block to the fixed iron core by screwing it onto the projecting shaft of the fixed core, and the projecting shaft of the fixed iron is externally fitted to one end of the coil block for feeding power. A terminal member is provided, and the terminal member is made of an insulating material and has a case part that fits over one end of the coil block and a pedestal part for electrical connection.The pedestal part has a lead wire from the coil. A plurality of male electrode fittings to be connected and a grounding fitting are erected on the terminal block, and the case portion of the terminal member is fastened to one end of the coil block by a fastening member.

[0006]

[Action]

 According to the structure of the present invention, a terminal member formed of an insulating material is provided separately from the coil block, and has a case portion fitted to enclose one end portion of the coil block and a pedestal portion for electrical connection. Since the case of this terminal member is fastened to one end of the coil block by a fastening member that is screwed onto the protruding shaft of the fixed iron core that can be fixedly attached to the valve body, it is attached to the base of the terminal member. External force applied to the fixed terminal block can be applied to the fixed iron core to support it on the valve body side, and the terminal block can be fixed to the solenoid with sufficient strength without being affected by the size of the solenoid itself. ..

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 show a solenoid provided in a pneumatic direction switching valve, 1 is a coil, which is wound around a bobbin 2 made of a non-magnetic material. A cylindrical yoke 3 is made of a magnetic material and is fitted on the coil 1. The plate yokes 4A and 4B are arranged on both sides of the bobbin 2, and the bobbin 2 is sandwiched by the cylindrical yokes 3 to form a magnetic circuit. A packing 5 is made of an elastic material and is attached to the collar 6 on the right side of the bobbin 2 to seal the coil 1. A guide member 7 is provided on the collar 8 on the left side of the bobbin 2 and guides the lead wires 9 and 10 from the coil 1 to the outside. The coil 1, the bobbin 2, the yokes 3, 4A, 4B, and the packing 5 thus configured are integrally molded with synthetic resin to form a coil block 11. Reference numeral 12 denotes a pipe, which is made of a magnetic material and on which the bobbin 2 can be fitted. Reference numeral 13 denotes a flange, which is fitted onto one end of the pipe 12 and fixed to the pipe 12 by welding. A screw 14 is formed on the outer circumference of the flange 13 so that the pipe 12 can be screwed onto the valve body 15. Reference numeral 16 denotes a fixed iron core, which is made of a magnetic material, has one end fitted into and fixed to the pipe 12, a screw 17 is formed on the outer periphery of the other end, and an exhaust hole 18 and a subsequently reduced valve hole 19 are provided on the center axis. There is. A movable iron core 20 is made of a magnetic material, and is fitted into the pipe 12 by providing an exhaust passage 21 in the axial direction on the outer circumference. Inside the movable iron core 20, valve portions 22 and 23 made of an elastic material are provided so as to be exposed on both side surfaces thereof. The valve portion 22 is fixed to the movable iron core 20 by a pin, and the valve portion 23 is provided. Is urged to the left by the elastic force of the spring 24, and is movable in the axial direction when it comes into contact with the opening of the valve hole 19 as the movable iron core 20 moves. The pipe 12, the fixed iron core 16 and the movable iron core 20 configured as described above are fixed to the valve body 15 by the pipe 12 and the fixed iron core 16 with the screw 14 of the flange 13, and the movable iron core 20 is elasticized by the return spring 47. The valve portion 22 is urged to the right by a force so that the valve portion 22 can come into contact with the opening of the supply valve hole 25 provided in the valve body 15. A coil block 11 is fitted onto the pipe 12 and a shaft portion of the fixed iron core 16 on which a screw 17 is formed is projected to the outside.

Reference numeral 26 denotes a terminal member, which is made of an insulating member, and which can be externally fitted to one end of the coil block 11 from which the protruding shaft portion of the fixed iron core 16 projects, as shown in FIGS. 4 and 5, and a case portion 27 and a pedestal portion. It consists of 28 and. The case portion 27 of the terminal member 26 is provided so as to be fitted externally so as to wrap one end portion of the coil block 11, and the pedestal portion 28 is provided by opening the upper surface to form a hollow central portion and burying female screw members 31 at four corners. ing. A terminal block 29 is provided with two male electrode metal fittings 30A and 30B made of a conductive material and a ground metal fitting 32 made of the same material, which are erected from one end surface. It is arranged on the upper surface and is fixed to the female screw member 31 by a screw 33 which is screwed. The two male electrode fittings 30A and 30B are soldered to the lead wires 9 and 10 from the coil 1 inside the terminal block 29. Further, the ground metal fitting 32 has a screw 34 screwed therein, and the tip of the screw 34 is provided so as to protrude from the side surface of the terminal base 29 which is in contact with the base portion 28. Further, a female screw member 44 is provided at the central portion of the terminal block 29 and is fixed to a socket 43 that is opened on the upper surface and is connected to a wiring from the power source side. Reference numeral 35 denotes a grounding metal fitting, which is made of a conductive material in the form of a plate, has a disk shape with a hole 37 formed in a base portion 36 as shown in FIGS. The portion is bent in the lateral direction to form the terminal 39. Then, the grounding metal fitting 35 fits the hole 37 of the base portion 36 with the projecting shaft portion of the fixed iron core 16 to sandwich it between the coil block 11 and the case portion 27 of the terminal member 26, and to fix it to the screw 17 of the fixed iron core 16. It is fastened by a fastening member 40 that is screwed. With this configuration, the rotation of the grounding metal fitting 35 is firmly regulated by the frictional force caused by the teeth 38 formed on the outer periphery of the base portion 36, and the screw 34 that is screwed into the grounding metal fitting 32 is tightened to the tip of the screw 34. Comes into contact with the terminal 39 of the earth connecting fitting 35 and is grounded. 41 is a cap member included in the fastening member 40, and is provided so as to exhaust the air flowing through the plurality of through holes 42 to the exhaust hole 18 of the fixed iron core 16 to the outside. Reference numerals 45 and 46 are an air supply port and a load port provided in the valve body 15.

Next, the operation of this configuration will be described. In the rest state shown in FIG. 1, when the opening / closing switch (not shown) provided on the socket 43 side of the terminal block 29 of the terminal member 26 is closed, the exciting current is generated by the male electrode fittings 30A, 30B. Power is supplied to the coil 1 through the lead wires 9 and 10. The exciting current passes through a magnetic circuit composed of the yokes 3, 4A, 4B, the fixed iron core 16 and the movable iron core 20, and the movable iron core 20 is attracted to the fixed iron core 16 against the elastic force of the return spring 47. .. At this time, the valve portion 22 of the movable iron core 20 is separated from the supply valve hole 25 opening of the valve body 15 to communicate between the air supply port 45 and the load port 46, and the valve portion 23 is the valve hole 19 of the fixed iron core 16. It blocks the flow of air flowing through the exhaust passage 21 to the exhaust hole 18 by abutting the opening, and moves relative to the movable iron core 20 against the elastic force of the spring 24 so that the valve hole 19 abuts the opening. Has eased. Further, when the exciting current to the coil 1 is cut off in this operating state, the attraction force of the movable iron core 20 to the fixed iron core 16 disappears, and the movable iron core 20 is returned to the original position shown by the elastic force of the return spring 47. Returning, the valve part 22 abuts the opening of the supply valve hole 25 of the valve body 15 to block the communication between the air supply port 45 and the load port 46, and the valve part 23 separates from the opening of the valve hole 19 to open the exhaust passage 21. The flowing air is discharged to the outside through the exhaust hole 18 and the through hole 42 of the cap member 41. Furthermore, when a leakage current is generated in the coil block 11 during feeding of the exciting current, the leakage current is conducted through the fixed iron core 16 to be guided to the ground connection fitting 35, and the ground fitting connected by the screw 34. 32 is led to the outside.

In this operation, the terminal member 26 is attached to one end of the coil block 11 by the fastening member 40 that is screwed into the case portion 27 with the screw 17 of the protruding shaft portion protruding from the side surface of the coil block 11 of the fixed iron core 16. Since they are fastened, the external force acting on the terminal block 29 acts on the fixed iron core 16 and is supported on the valve body 15 side via the flange 13 of the pipe 12. Therefore, the strength against the external force applied to the terminal block 29 can be obtained without being influenced by the thickness of the synthetic resin that molds the coil block 11, and the strength is not affected by the size of the solenoid itself. It is possible to provide a solenoid equipped with the terminal block 29. Further, since the terminal member 26 has the case portion 27 fitted onto one end of the coil block 11 and is fastened by the fastening member 40, it can be properly installed in the existing solenoid by appropriately changing the shape of the case portion 27. Is. In one embodiment, the ground metal fitting 32 and the ground connection metal fitting 35 are connected to each other by abutting the terminal 39 at the tip thereof by tightening the screw 34. Of course, it may be provided so as to be fastened.

[0011]

[Effect of the device]

 As described above, according to the present invention, the fixed iron core having one end fixedly attached to the valve body, the coil block wound around the coil so as to be fitted onto the outer circumference of the fixed iron core, and protruding from the side surface of the coil block. And a fastening member for integrally fastening the coil block to the fixed iron core by screwing onto the projecting shaft portion of the fixed iron core, which is externally fitted to one end of the coil block from which the projecting shaft portion of the fixed iron core projects. Is provided with a terminal member for power supply, and the terminal member has a case part that fits over one end of the coil block and a pedestal part for electrical connection, and is molded from an insulating material. A plurality of male type electrode fittings for connecting the lead wires of and the grounding fittings are fixedly provided on the terminal block, and the case portion of the terminal member is fastened to one end of the coil block by a fastening member, so that the solenoid Influences the size of itself Without being possible to provide a mounting of the solenoid terminal block with no such sufficient strength can be obtained against an external force. Also, the terminal member is composed of a case and a pedestal, and the case is externally fitted to the coil block and fastened to one end of the coil block by a fastening member. And, it has the effect that it is possible to install the terminal block with the grounding metal installed upright.

[Brief description of drawings]

1 is a longitudinal sectional view taken along the line AA of FIG. 2 showing an embodiment of the present invention.

FIG. 2 is a plan view of a solenoid showing an embodiment of the present invention.

3 is a vertical cross-sectional view taken along the line BB of FIG.

FIG. 4 is a plan view of a terminal member of a solenoid showing an embodiment of the present invention.

5 is a vertical cross-sectional view taken along the line CC of FIG.

FIG. 6 is an enlarged front view of the grounding metal fitting of the present invention.

FIG. 7 is a view on arrow D in FIG.

FIG. 8 is a plan view of FIG.

[Explanation of symbols]

 15 valve body 16 fixed iron core 1 coil 11 coil block 40 fastening member 26 terminal member 27 case portion 28 pedestal portion 9, 10 lead wire 30A, 30B male electrode metal fitting 32 ground metal fitting

Claims (1)

[Scope of utility model registration request] 1. A fixed iron core having one end fixed to a valve body, a coil block wound around a coil so as to be fitted onto the outer periphery of the fixed iron core, and a fixed iron core projecting from a side surface of the coil block. A terminal member for power feeding, which has a fastening member that is screwed to the protruding shaft portion and integrally fastens the coil block to the fixed iron core, and is externally fitted to one end portion of the coil block where the protruding shaft portion of the fixed iron core projects. The terminal member is formed of an insulating material having a case portion that fits over one end of the coil block and a pedestal portion for electrical connection, and a lead wire from the coil is connected to the pedestal portion. A solenoid in which a plurality of male electrode fittings and a grounding fitting are provided so as to be fixedly provided, and a case portion of the terminal member is fastened to one end portion of a coil block by a fastening member.