JP2005026183A - Electromagnetic switching device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stabilize a contact point of each movable contact and each fixed contact by stably attaching and detaching a pair of movable contacts to a pair of fixed contacts. <P>SOLUTION: In this electromagnetic switching device, provided with an electromagnet device comprising a solenoid coil, a movable iron core, a yoke 23 and another yoke, a pair of fixed terminals, a movable contact 4, a shaft 5, and a container body housing them, a pair of movable contacts are brought into contact with or separated from the pair of fixed contacts through the shaft respectively by advancing/retreating the movable iron core along an axis by the electromagnet device. Fitting parts 231, 511 fitting together all the while the shaft 5 is moving along the axis are provided in the yoke 23 and a holding part 51 of the shaft 5 respectively. The fitting parts 231, 511 are formed in a shape having an angle in a view from one end or the other end of the axis. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to, for example, an electromagnetic switching device used for opening and closing an electric circuit in a moving body that runs on electric power.

Conventionally, various electromagnetic switchgears of this type have been proposed and are commercially available. For example, Patent Document 1 includes a holder portion that holds an intermediate portion of a movable contact at one end portion and a connecting shaft portion that is fixed to the movable iron core while being inserted into the movable iron core at the other end portion. An electromagnetic device in which an electromagnet device and a contact mechanism are coupled via a contact holder, and a damper made of an elastic material is provided between an engaging portion provided at an intermediate portion of the contact holder and an inner bottom surface of the guide tube. A switchgear (contact device) is described.
JP 2002-42628 A

  However, like the above-described conventional electromagnetic switching device, the movement of the movable iron core is transmitted by a shaft such as a contact holder, and the pair of movable contacts of the movable contact is brought into and out of contact with the pair of fixed contacts. In the configuration, the contact point may be shifted when the pair of movable contacts of the movable contactor is in contact with or separated from the pair of fixed contacts.

  This invention is made | formed in view of the said situation, a pair of movable contact is made to contact / separate stably with respect to a pair of fixed contact, and the contact point of each movable contact and each fixed contact is stabilized. An object of the present invention is to provide an electromagnetic switchgear that can be used.

  Each of the inventions according to claims 1 to 8 is a solenoid coil wound around one axis and having a hollow part on one axis, and a movable iron provided in the hollow part so as to be movable along the one axis. A core, a first yoke provided on one end face side of the solenoid coil facing the one end side of the one shaft and having an insertion hole on the one shaft, and the solenoid coil facing the other end side of the one shaft An electromagnet device comprising a second yoke provided on the other end surface side, and a pair of fixed terminals each having a connection portion on one end side of the one shaft and a fixed contact on the other end side of the one shaft; A movable contact having a pair of movable contacts at both ends respectively contacting and separating with respect to the fixed contacts of the pair of fixed terminals, a holding unit for holding the movable contact, and other than the one shaft from the holding unit Extending to the end side and inserting the first yoke A shaft having a connecting shaft that is fixed to the movable iron core, and the fixed contact side of the pair of fixed terminals in the state where the connection portions are exposed to the outside, and the movable contact, A housing for housing the shaft and the electromagnet device therein, and moving the movable iron core forward and backward along the one axis by the electromagnet device, thereby moving the pair of movable contacts through the shaft. It is an electromagnetic switching device that contacts and separates from the pair of fixed contacts.

  In the first aspect of the present invention, each of the first yoke and the holding portion has a fitting portion that fits with each other while the shaft moves along the one axis. Each of these fitting portions is formed in a shape having a corner when viewed from one end side or the other end side of the one shaft. In this configuration, since the corners of the holding portion and the fitting portion of the first yoke are engaged with each other, the shaft can be prevented from rotating around one axis, so the pair of movable contacts are fixed to the pair. The contact point between each movable contact and each fixed contact can be stabilized by stably contacting and separating the contact. In addition, since the insertion hole of the first yoke is closed by both fitting portions, it is possible to prevent intrusion of metal powder generated at the contact point in the electromagnet device.

  According to a second aspect of the present invention, the movable contact is formed in a shape extending in a direction perpendicular to the one axis, and the movable contact is being moved while the shaft is moving along the one axis. An insulating enclosing member surrounding at least both sides along the longitudinal direction is housed inside the vessel body, and a plurality of protrusions close to the enclosing member are provided on both sides along the longitudinal direction of the movable contact. To do. In this configuration, the protrusions provided on both sides along the longitudinal direction of the movable contactor can prevent the movable contactor from rotating about one axis by being close to or in contact with the surrounding member. The pair of movable contacts can be stably brought into contact with and separated from the pair of fixed contacts, and the contact point between each movable contact and each fixed contact can be stabilized. In addition, since the movable contact itself is prevented from rotating around one axis, the stability of the contact point between each movable contact and each fixed contact is greatly improved.

  According to a third aspect of the present invention, the movable contact is formed in a shape extending in a direction perpendicular to the one axis, and an insulating member is provided between the movable contact and the first yoke. In addition, while the shaft is moving along the one axis, a plurality of sandwiching portions that are close to both sides along the longitudinal direction of the movable contact are formed. In this configuration, each sandwiched portion formed on the insulating member approaches or abuts on both sides along the longitudinal direction of the movable contact so that the movable contact rotates about one axis while ensuring an insulating function. Therefore, the pair of movable contacts can be stably brought into contact with and separated from the pair of fixed contacts, and the contact point between each movable contact and each fixed contact can be stabilized.

  A fourth aspect of the present invention is the electromagnetic switching device according to any one of the first to third aspects, wherein the electromagnetic switching device is formed in a box shape having an opening on one end side of the one shaft, and on the one shaft at the bottom. An insulating member provided between the movable contact and the first yoke is held by a plurality of elastic holding members, and each of the plurality of elastic holding members is provided with an insertion hole for inserting the shaft. The insulating member is supported by the inner surface of the cylindrical member surrounding the side peripheral portion from the outside and the surface of the first yoke on one end side of the one shaft. In this configuration, the position of the insulating member inside the container can be stabilized.

  According to a fifth aspect of the present invention, in the electromagnetic switching device according to any one of the first to third aspects of the present invention, the electromagnetic switching device is formed in a box shape having an opening on one end side of the one shaft, and on the one shaft at the bottom. An insertion hole for inserting the shaft is provided, and a dowel or spring property is imparted to the edge side of the opening in the insulating member provided between the movable contact and the first yoke, It is formed in a box shape having an opening on the other end side of the shaft, and has an insertion hole for inserting each fixed contact side of the pair of fixed terminals at the bottom, and the opening of the surrounding member surrounding the movable contact The edge side of the opening of the insulating member is in contact with the edge side. In this configuration, since the edge side of the opening of the insulating member can be held on the edge side of the opening of the surrounding member, the insulating member can be held with respect to the surrounding member through which each fixed contact side of the pair of fixed terminals is inserted. The position can be stabilized.

  A sixth aspect of the present invention is the electromagnetic switching device according to any one of the first to fifth aspects, wherein the electromagnetic switching device is formed in a box shape having an opening on one end side of the one shaft, and on the one shaft at the bottom. A pair of magnets or magnetic bodies are arranged oppositely in the vicinity of each movable contact in an insulating member provided between the movable contact and the first yoke, and having an insertion hole for inserting the shaft. It is characterized by becoming. In this configuration, for example, in the case of a configuration in which a pair of magnets are opposed to each other so as to sandwich the movable contact (also a fixed contact) in order to extend the arc, a pair of magnets or magnetic bodies are provided in the vicinity of each movable contact in the insulating member. The arc-extinguishing magnetic field can be strengthened by arranging them in opposition.

  According to a seventh aspect of the present invention, in the electromagnetic switching device according to the sixth aspect of the present invention, the pair of magnets or magnetic bodies arranged opposite to each other in the vicinity of the movable contacts in the insulating member is imparted with a spring property. Formed in a box shape having an opening on the other end side of the shaft, and has an insertion hole for inserting each fixed contact side of the pair of fixed terminals at the bottom, and the opening in the surrounding member surrounding the movable contact The magnet or the magnetic material is in contact with the edge side of the magnetic material. In this configuration, since the edge side of the opening of the insulating member can be held on the edge side of the opening of the surrounding member, the insulating member is in contrast to the surrounding member through which each fixed contact side of the pair of fixed terminals is inserted. The position of can be stabilized.

  The invention according to claim 8 is the electromagnetic switching device according to any one of claims 1 to 5, wherein the electromagnetic switch is formed in a box shape having an opening on one end side of the one shaft, and on the one shaft at the bottom. A pair of magnets and a pair of magnets on both ends of the insulating member provided between the movable contact and the first yoke are provided on both sides of the outer peripheral surface of the insulating member. Two sets of holding yokes are arranged. In this configuration, the arc extinguishing magnetic field can be enhanced by arranging the magnet on the movable contact side while ensuring the insulating function.

  A ninth aspect of the present invention is the electromagnetic switching device according to any one of the first to eighth aspects, wherein the pair of fixed terminals, the first yoke, and each fixed contact side of the pair of fixed terminals at the bottom. A surrounding member that surrounds the movable contact, a cylindrical member interposed between an edge of the surrounding member and the first yoke, and one end of the one shaft A guide cylinder that is formed in a bottomed cylinder shape having an opening on the side, and that closes the insertion hole of the first yoke from the other end side of the one shaft in a state where the movable iron core is housed in the hollow portion. Are hermetically bonded to form an airtight space, and hydrogen or a gas mainly containing hydrogen is hermetically sealed in the airtight space. With this configuration, the arc extinguishing function can be improved, the arc extinguishing space can be reduced, and the effect of enabling miniaturization can be achieved.

  ADVANTAGE OF THE INVENTION According to this invention, a pair of movable contact can be made to contact / separate stably with respect to a pair of fixed contact, and the contact point of each movable contact and each fixed contact can be stabilized.

(Embodiment 1)
FIG. 1 is a partial cross-sectional view of an electromagnetic switch according to Embodiment 1 of the present invention, and FIG. 2 is a basic configuration diagram of the electromagnetic switch of each embodiment according to the present invention.

  First, a basic configuration common to the first embodiment and each embodiment described later will be described.

  As shown in FIG. 2, the electromagnetic switching device of each embodiment includes a resin container 1, an electromagnet device 2, a pair of fixed terminals 3, 3, a movable contact 4, a shaft 5, a surrounding member 6, and an insulating member 7. And a cylindrical member 8 or the like, and is used, for example, to open and close an electric circuit in a moving body that runs on electric power.

  The body 1 has a body 10 formed in a box shape having an opening (facing the front in the figure) and a cover (not shown) formed in a box shape having an opening facing the back side and closing the opening of the body 10. And the stationary contacts 31 and 31 side of the pair of fixed terminals 3 and 3 are housed inside and the electromagnet is exposed in a state where the connection portions 30 of the pair of fixed terminals 3 and 3 are exposed to the outside. The device 2, the movable contact 4, the shaft 5, the surrounding member 6, the insulating member 7, the cylindrical member 8, and the like are housed inside.

  The electromagnet device 2 includes a bobbin 20 which is formed in a cylindrical shape and has a pair of outward flanges at both ends, a solenoid coil 21 wound around the outer peripheral surface of the bobbin 20 around the one axis, and a single shaft. A movable iron core 22 provided in the hollow portion of the bobbin 20 so as to be movable along the axis, and one end face side of the solenoid coil 21 facing one end side (upper side in the figure) of one shaft, and is inserted on one shaft. A yoke 23 having a hole 23a, a yoke 24 provided on the other end face side of the solenoid coil 21 facing the other end side (lower side) of one shaft, and one end side of one shaft of the movable iron core 22 are formed. A spring 25 that is interposed between the recess 22a and the yoke 23 and biases the movable iron core 22 toward the other end of one shaft, and is formed in a cylindrical shape having a bottom at the other end of the one shaft. Guide tube for storing the movable iron core 22 movably along one axis It is composed of six.

  The yoke 23 is formed in a flat plate shape. On the other hand, the yoke 24 has a bottom portion 240 having a hole 24a in the center, an inner wall portion 241 standing on the inner peripheral edge of the bottom portion 240 toward one end of one shaft, and a single shaft on the outer peripheral edge of the bottom portion 240. It is formed in a shape that integrally has an outer wall portion 242 that stands up toward one end side. A pair of lead wires connected to both ends of the solenoid coil 21 are not shown.

  The fixed terminal 3 is formed in the shape of a bolt, and a connecting portion 30 of a screw portion is arranged on one end side of one shaft, and a fixed contact 31 is provided on the tip of the head on the other end side of the one shaft. A nut N is screwed to the connection portion 30 of the screw portion via a washer W.

  The movable contact 4 is formed of a flat rectangular conductive plate, and has a recess 40a that opens to the other end of one shaft in the central portion 40, and also fixes a pair of fixed terminals 3 and 3. A pair of movable contacts 41 and 41 that come in contact with and separate from the contacts 31 and 31 are provided at both ends.

  The shaft 5 is configured so that the central portion 40 of the movable contact 4 can be moved along one axis in a state where the pair of movable contacts 41 and 41 are biased toward the pair of fixed contacts 31 and 31 by a spring 50. A holding part 51 to be held and a connecting shaft 52 extending from the holding part 51 to the other end side of one shaft and passing through the insertion hole 23a of the yoke 23 and fixed to the movable iron core 22 are integrally formed. ing.

  The surrounding member 6 is formed in a box shape having an opening 6a on the other end side of one shaft, for example, of ceramic, and an insertion hole 60a for inserting the fixed contact 31 side of the pair of fixed terminals 3 and 3 into the bottom portion 60. have.

  The insulating member 7 is formed in a box shape having an opening 7a on one end side of one shaft by an insulating material, has an insertion hole 70a for inserting the shaft 5 on one shaft of the bottom portion 70, and is a movable contact. 4 and the yoke 23.

  The tubular member 8 is made of, for example, metal, and is interposed between the opening edge 611 of the surrounding member 6 and the yoke 23 (the upper surface thereof) so as to surround the side peripheral portion 71 of the insulating member 7 from the outside. Yes. An outward flange 81 is formed at the opening edge of the cylindrical member 8 on the other end side of one shaft.

  When the electromagnetic switchgear having the above configuration is used in, for example, an electric vehicle, when the movable iron core 22 is moved back and forth along one axis by the electromagnet device 2, a pair of movable contactors 4 are connected via the shaft 5. The movable contacts 41, 41 contact and separate from the fixed contacts 31, 31 of the pair of fixed terminals 3, 3, respectively. That is, when the pair of lead wires are energized and the movable iron core 22 is advanced along one axis, the pair of movable contacts 41 and 41 are respectively connected to the fixed contacts 31 and 31 of the pair of fixed terminals 3 and 3. Contact. On the other hand, when the energization is stopped and the movable iron core 22 is retracted along one axis by the spring 25 of the electromagnet device 2, the pair of movable contacts 41, 41 are fixed contacts 31 of the pair of fixed terminals 3, 3. , 31 from each other. Thereby, between the connection parts 30 and 30 of a pair of fixed terminals 3 and 3 is electrically opened and closed via the movable contact 4, and an electric circuit is opened and closed.

  Next, the characteristic part of the first embodiment will be described. As shown in FIG. 1, the electromagnetic switching device of the first embodiment is such that the yoke 23 and the holding portion 51 of the shaft 5 are moved along one axis. The fitting parts 231 and 511 are fitted to each other during the operation, and the fitting parts 231 and 511 are formed in a shape having a corner when viewed from one end side or the other end side of one shaft. Has been. In FIG. 1, the fitting portion 231 is a convex portion projecting from a surface (upper surface) on one end side of one shaft in the yoke 23, and the shape seen from one end side (upper side) of one shaft is shown. It is rectangular. On the other hand, the fitting part 511 is a concave part that fits into the fitting part 231, and the shape viewed from the other end side (lower side) of one shaft is rectangular.

  In Embodiment 1 of the said structure, since each corner | angular of the fitting parts 231 and 511 of the yoke 23 and the holding | maintenance part 51 engages, it can prevent that the shaft 5 rotates around one axis | shaft. The pair of movable contacts 41, 41 can be stably brought into and out of contact with the pair of fixed contacts 31, 31, and the contact point between each movable contact 41 and each fixed contact 31 can be stabilized.

  Further, since the insertion hole 23a of the yoke 23 is closed by the fitting portions 231 and 511, the metal powder generated at the contact point in the electromagnet device 2 can be prevented from entering.

(Embodiment 2)
FIG. 3 is a partial cross-sectional view of the electromagnetic switch according to Embodiment 2 of the present invention.

  As shown in FIG. 3, the electromagnetic switching device according to the second embodiment is configured such that the movable contact 4 is formed in a shape extending in a direction orthogonal to one axis (the left-right direction in the figure), and the shaft 5 extends along one axis. During the movement, the insulating enclosure member 6 that surrounds both sides of the movable contact 4 along the longitudinal direction is housed in the body 1.

  As a feature of the second embodiment, a plurality of protrusions 42 close to the inner surface 61 a of the side peripheral portion 61 of the surrounding member 6 are provided on both sides along the longitudinal direction of the movable contact 4. In FIG. 3, protrusions 42 are provided in the vicinity of each corner of the central portion 40 of the movable contact 4.

  In the second embodiment having the above-described configuration, the protrusions 42 provided on both sides along the longitudinal direction of the movable contact 4 approach or abut against the inner surface 61a of the side peripheral portion 61 of the surrounding member 6, thereby moving the movable contact 4. Can be prevented from rotating around one axis, so that the pair of movable contacts 41, 41 can be stably brought into and out of contact with the pair of fixed contacts 31, 31 so that each movable contact 41 and each fixed contact can be separated. The contact point with 31 can be stabilized. In addition, since the movable contact 4 itself is prevented from rotating around one axis, the stability of the contact point between each movable contact 41 and each fixed contact 31 becomes very good.

(Embodiment 3)
FIG. 4 is a partial cross-sectional view of an electromagnetic switch according to Embodiment 3 of the present invention.

  As shown in FIG. 4, the electromagnetic switching device according to the third embodiment forms the movable contact 4 in a shape extending in a direction orthogonal to one axis, and the insulating member 7 is provided between the movable contact 4 and the yoke 23. It has a basic configuration.

  As a feature of the third embodiment, while the shaft 5 moves along one axis, a plurality of sandwiching portions 712 that are close to both sides along the longitudinal direction of the movable contact 4 are formed in the insulating member 7. It is configured. In FIG. 4, each sandwiching portion 712 is integrally extended from the opening edge portion 711 of the insulating member 7 toward one end side of one shaft so as to be close to both sides along the longitudinal direction of the movable contact 4. Yes.

  In Embodiment 3 of the said structure, each pinching part 712 formed in the insulating member 7 approaches or contacts both sides along the longitudinal direction of the movable contact 4, so that the movable contact 4 is secured while ensuring an insulating function. Since rotation about one axis can be prevented, the pair of movable contacts 41, 41 is stably brought into contact with and separated from the pair of fixed contacts 31, 31. The contact point with can be stabilized.

(Embodiment 4)
FIG. 5 is a partial cross-sectional view of an electromagnetic switch according to Embodiment 4 of the present invention.

  As shown in FIG. 5, the electromagnetic switching device according to the fourth embodiment includes a cylindrical member 8 that surrounds the side peripheral portion 71 of the insulating member 7 from the outside, and an opening edge 611 of the surrounding member 6 and a single shaft in the yoke 23. It has a basic configuration interposed between the one end side surface.

  As a feature of the fourth embodiment, the insulating member 7 provided between the movable contact 4 and the yoke 23 is held by a plurality of metal elastic holding members 72 having a U-shaped cross section and having spring properties. Each of the plurality of elastic holding members 72 is supported by the inner surface of the cylindrical member 8 that surrounds the side peripheral portion 71 of the insulating member 7 from the outside and the surface of one end of one shaft of the yoke 23. Yes.

  In Embodiment 4 of the said structure, the position of the insulating member 7 in the inside of the container 1 can be stabilized.

(Embodiment 5)
FIG. 6 is a partial cross-sectional view of an electromagnetic switch according to Embodiment 5 of the present invention.

  As shown in FIG. 6, the electromagnetic switching device of the fifth embodiment is formed in a box shape having an opening 7 a on one end side of one shaft, and an insertion hole for inserting the shaft 5 on one shaft of the bottom portion 70. 70a, and a dowel or spring property (the dowel 711a in the figure) is given to the outside of the opening edge 711 in the insulating member 7 provided between the movable contact 4 and the yoke 23, and the other end of one shaft In the surrounding member 6 which is formed in a box shape having an opening 6 a on the side, has an insertion hole 60 a for inserting each fixed contact 31 side of the pair of fixed terminals 3, 3 in the bottom portion 60, and surrounds the movable contact 4. A feature is that the outside of the opening edge 711 of the insulating member 7 is in contact with the inside of the opening edge 611.

  In Embodiment 5 having the above-described configuration, the opening edge 711 side of the insulating member 7 can be held on the opening edge 611 side of the surrounding member 6, so that each fixed contact 31 side of the pair of fixed terminals 3 and 3 is inserted. The position of the insulating member 7 can be stabilized with respect to the surrounding member 6.

(Embodiment 6)
FIG. 7 is a partial sectional view of an electromagnetic switch according to Embodiment 6 of the present invention.

  As shown in FIG. 7, the electromagnetic switching device of the sixth embodiment is formed in a box shape having an opening 7 a on one end side of one shaft, and an insertion hole for inserting the shaft 5 on one shaft of the bottom portion 70. A pair of magnets (permanent magnets) or magnetic bodies (in the drawing) that sandwich the movable contacts 41 in the vicinity of the movable contacts 41 in the insulating member 7 provided between the movable contacts 4 and the yoke 23. A pair of magnets 73 and 73) are arranged to face each other.

  In the sixth embodiment, the pair of magnets 62 and 62 which are opposed to each other with the side contact portion 61 of the surrounding member 6 sandwiched from the outside and the movable contact 41 sandwiched therebetween, and the pair of magnets 62 and 62 at both ends. Two sets of yokes 63 each having a U-shaped cross section are provided.

  A pair of magnets or magnetic bodies (a pair of magnets 73 and 73 in the sixth embodiment) arranged opposite to each other with the movable contacts 41 interposed therebetween is a pair of magnets 62 arranged opposite to each other with the movable contacts 41 interposed therebetween. , 62 are provided.

  As described above, in order to extend the arc, the pair of magnets 62 and 62 are arranged to face each other so as to sandwich the movable contact 41 (also the fixed contact 31), and in the vicinity of each movable contact 41 in the insulating member 7, The arc-extinguishing magnetic field can be strengthened by arranging the magnets or magnetic bodies facing each other.

(Embodiment 7)
FIG. 8 is a partial cross-sectional view of an electromagnetic switch according to Embodiment 7 of the present invention.

  As shown in FIG. 8, the electromagnetic switching device according to the seventh embodiment includes a pair of magnets or magnetic bodies (magnets 73 in the figure) disposed in the vicinity of the movable contacts 41 in the insulating member 7 as shown in FIG. And is formed in a box shape having an opening 6a on the other end side of one shaft, and has an insertion hole 60a for inserting each fixed contact 31 side of the pair of fixed terminals 3 and 3 in the bottom portion 60. The magnet or magnetic material is in contact with the inner side of the opening edge 611 of the surrounding member 6 surrounding the movable contact 4.

  In Embodiment 7 having the above-described configuration, the opening edge 711 side of the insulating member 7 can be held on the opening edge 611 side of the surrounding member 6, so that each fixed contact 31 side of the pair of fixed terminals 3, 3 is The position of the insulating member 7 can be stabilized with respect to the surrounding surrounding member 6 inserted.

(Embodiment 8)
FIG. 9 is a partial cross-sectional view of an electromagnetic switch according to Embodiment 8 of the present invention.

  As shown in FIG. 9, the electromagnetic switching device of the eighth embodiment is formed in a box shape having an opening 7 a on one end side of one shaft, and an insertion hole for inserting the shaft 5 on one shaft of the bottom portion 70. A pair of magnets 73, 73 that are disposed opposite to each other so as to sandwich the movable contact 41 on the outside of the side peripheral portion 71 of the insulating member 7 provided between the movable contact 7 and the yoke 23. Two pairs of yokes 74 having a U-shaped cross section for holding the pair of magnets 73 and 73 at both ends are provided.

  In the eighth embodiment, as in the sixth embodiment, in order to extend the arc, in the case of a configuration in which the pair of magnets 62 and 62 are arranged so as to sandwich the movable contact 41 (also the fixed contact 31), the insulating member 7, a pair of magnets 73, 73 and two yokes 74 that hold the pair of magnets 73, 73 at both ends are arranged on the outside of the side peripheral portion 71, thereby enhancing the arc-extinguishing magnetic field. it can.

  In each of the above embodiments, the pair of fixed terminals 3 and 3, the yoke 23, and the bottom portion 60 have insertion holes 60 a for inserting the fixed contacts 31 of the pair of fixed terminals 3 and 3, and are movable. Formed in a bottomed cylindrical shape having a surrounding member 6 surrounding the contact 4, a cylindrical member 8 interposed between the opening edge of the surrounding member 6 and the yoke 23, and an opening on one end side of one shaft. The airtight space is formed by airtightly joining the guide tube 26 that closes the insertion hole 23a of the yoke 23 from the other end side of one shaft in a state where the movable iron core 22 is housed in the hollow portion, Hydrogen or a gas mainly composed of hydrogen may be hermetically sealed in this hermetic space. According to this configuration, the arc extinguishing function can be improved, the arc extinguishing space can be reduced, and the effect of enabling miniaturization can be achieved.

It is a partial cross section figure of the electromagnetic switching device of Embodiment 1 by this invention. 1 is a basic configuration diagram of an electromagnetic switch according to each embodiment of the present invention. It is a partial cross section figure of the electromagnetic switching device of Embodiment 2 by this invention. It is a partial cross section figure of the electromagnetic switching device of Embodiment 3 by this invention. It is a partial cross section figure of the electromagnetic switching device of Embodiment 4 by this invention. It is a partial cross section figure of the electromagnetic switching device of Embodiment 5 by this invention. It is a partial cross section figure of the electromagnetic switching device of Embodiment 6 by this invention. It is a partial cross section figure of the electromagnetic switching device of Embodiment 7 by this invention. It is a partial cross section figure of the electromagnetic switching device of Embodiment 8 by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Body 10 Body 2 Electromagnet apparatus 20 Bobbin 21 Solenoid coil 22 Movable iron core 23, 24 Yoke 25 Spring 26 Guide cylinder 3 Fixed terminal 31 Fixed contact 4 Movable contact 41 Movable contact 5 Shaft 51 Holding part 52 Connection shaft 6 Enclosing member 60 Bottom 61 Side circumference 7 Insulating member 70 Bottom 71 Side circumference 8 Cylindrical member

Claims (9)

A solenoid coil wound around one axis and having a hollow part on one axis, a movable iron core provided in the hollow part so as to be movable along the one axis, and facing the one end side of the one axis A first yoke provided on one end face side of the solenoid coil and having an insertion hole on the one axis; and a second yoke provided on the other end face side of the solenoid coil facing the other end side of the one axis. An electromagnet device, a pair of fixed terminals each having a connecting portion on one end side of the one shaft and a fixed contact on the other end side of the one shaft, and a fixed contact of the pair of fixed terminals A movable contact having a pair of movable contacts at both ends respectively contacting and separating, a holding portion for holding the movable contact, and an insertion hole of the first yoke extending from the holding portion to the other end of the one shaft Fixed to the movable iron core A shaft having a connecting shaft and the fixed contact side of the pair of fixed terminals are housed inside with the connection portions exposed to the outside, and the movable contactor, the shaft, and the electromagnet device are housed inside. And the pair of movable contacts are connected to the pair of fixed contacts via the shaft by moving the movable iron core forward and backward along the one axis by the electromagnet device. An electromagnetic switchgear device
Each of the first yoke and the holding portion has a fitting portion that fits with each other while the shaft moves along the one axis. An electromagnetic switching device characterized in that it is formed in a shape having a corner when viewed from one end side or the other end side of the shaft. A solenoid coil wound around one axis and having a hollow part on one axis, a movable iron core provided in the hollow part so as to be movable along the one axis, and facing the one end side of the one axis A first yoke provided on one end face side of the solenoid coil and having an insertion hole on the one axis; and a second yoke provided on the other end face side of the solenoid coil facing the other end side of the one axis. An electromagnet device, a pair of fixed terminals each having a connecting portion on one end side of the one shaft and a fixed contact on the other end side of the one shaft, and a fixed contact of the pair of fixed terminals A movable contact having a pair of movable contacts at both ends respectively contacting and separating, a holding portion for holding the movable contact, and an insertion hole of the first yoke extending from the holding portion to the other end of the one shaft Fixed to the movable iron core A shaft having a connecting shaft and the fixed contact side of the pair of fixed terminals are housed inside with the connection portions exposed to the outside, and the movable contactor, the shaft, and the electromagnet device are housed inside. And the pair of movable contacts are connected to the pair of fixed contacts via the shaft by moving the movable iron core forward and backward along the one axis by the electromagnet device. An electromagnetic switchgear device
The movable contact is formed in a shape extending in a direction perpendicular to the one axis, and at least surrounds both sides along the longitudinal direction of the movable contact while the shaft is moving along the one axis. An electromagnetic switch comprising: an insulating enclosing member housed in the container; and a plurality of protrusions close to the enclosing member provided on both sides along the longitudinal direction of the movable contact. A solenoid coil wound around one axis and having a hollow part on one axis, a movable iron core provided in the hollow part so as to be movable along the one axis, and facing the one end side of the one axis A first yoke provided on one end face side of the solenoid coil and having an insertion hole on the one axis; and a second yoke provided on the other end face side of the solenoid coil facing the other end side of the one axis. An electromagnet device, a pair of fixed terminals each having a connecting portion on one end side of the one shaft and a fixed contact on the other end side of the one shaft, and a fixed contact of the pair of fixed terminals A movable contact having a pair of movable contacts at both ends respectively contacting and separating, a holding portion for holding the movable contact, and an insertion hole of the first yoke extending from the holding portion to the other end of the one shaft Fixed to the movable iron core A shaft having a connecting shaft and the fixed contact side of the pair of fixed terminals are housed inside with the connection portions exposed to the outside, and the movable contactor, the shaft, and the electromagnet device are housed inside. And the pair of movable contacts are connected to the pair of fixed contacts via the shaft by moving the movable iron core forward and backward along the one axis by the electromagnet device. An electromagnetic switchgear device
The movable contact is formed in a shape extending in a direction orthogonal to the one axis, and an insulating member is provided between the movable contact and the first yoke, and the shaft is connected to the one axis. A plurality of sandwiching portions adjacent to both sides along the longitudinal direction of the movable contact are formed while moving along the electromagnetic contactor.   It is formed in a box shape having an opening on one end side of the one shaft, and has an insertion hole for inserting the shaft on the one shaft at the bottom, and between the movable contact and the first yoke An insulating member provided on the inner surface of the cylindrical member that surrounds a side peripheral portion of the insulating member from the outside and the one of the first yoke in the first yoke. The electromagnetic switching device according to claim 1, wherein the electromagnetic switching device is supported by a surface on one end side of the shaft.   It is formed in a box shape having an opening on one end side of the one shaft, and has an insertion hole for inserting the shaft on the one shaft at the bottom, and between the movable contact and the first yoke The dowel or spring property is imparted to the edge side of the opening in the insulating member provided in the box, and is formed in a box shape having an opening on the other end side of the one shaft, and each of the pair of fixed terminals is fixed to the bottom. An opening hole for inserting the contact side is provided, and the edge side of the opening of the insulating member is brought into contact with the edge side of the opening of the surrounding member surrounding the movable contact. Item 4. The electromagnetic switching device according to any one of Items 1 to 3.   It is formed in a box shape having an opening on one end side of the one shaft, and has an insertion hole for inserting the shaft on the one shaft at the bottom, and between the movable contact and the first yoke 6. The electromagnetic switching device according to claim 1, wherein a pair of magnets or magnetic bodies are arranged opposite to each other in the vicinity of each movable contact in the insulating member provided in the electromagnetic member.   The pair of magnets or magnetic bodies arranged opposite to each other in the vicinity of each movable contact in the insulating member is provided with a spring property, and is formed in a box shape having an opening on the other end side of the one shaft, It has an insertion hole for inserting each fixed contact side of a pair of fixed terminals, and the magnet or magnetic body is in contact with the edge side of the opening in the surrounding member surrounding the movable contact. The electromagnetic switching device according to claim 6.   It is formed in a box shape having an opening on one end side of the one shaft, and has an insertion hole for inserting the shaft on the one shaft at the bottom, and between the movable contact and the first yoke 6. Two sets of a pair of magnets and yokes that respectively hold the pair of magnets at both ends are arranged on the outer surface of the side peripheral portion of the insulating member provided on the base member. The electromagnetic switchgear described.   An enclosing member that has an insertion hole for inserting the fixed contact side of the pair of fixed terminals at the bottom, the enclosing member surrounding the movable contact, and the enclosing member A cylindrical member interposed between an edge portion and the first yoke; and a bottomed cylindrical shape having an opening on one end side of the one shaft; and the movable iron core provided in the hollow portion In the housed state, the insertion hole of the first yoke is hermetically joined to a guide cylinder that closes the other end of the one shaft to form an airtight space, and hydrogen or a gas mainly composed of hydrogen is formed in the airtight space. The electromagnetic switch according to any one of claims 1 to 8, wherein the electromagnetic switch is hermetically sealed.

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