JP4458064B2 - Electromagnetic switchgear - Google Patents

Description

  The present invention relates to an electromagnetic switching device in which an electromagnet device having an exciting winding and a contact device that opens and closes in conjunction with the operation of the electromagnet device are housed in a case.

  Conventionally, as this type of electromagnetic switching device, as shown in FIG. 8, an internal unit A provided with an electromagnet device 1 and a contact device 2 is provided in a case X made of an insulating material such as a synthetic resin. Has been.

  The electromagnet apparatus 1 shown in FIG. 8 has a fixing member having an exciting winding 3 and a fixed iron core 6 that forms a part of a magnetic path through which a magnetic flux generated by the exciting winding 3 passes. A movable member having a movable iron core 7 movable between a contact position and a position away from the fixed iron core 6, and energization of the excitation winding 3 is turned on and off to turn the fixed iron core 6 The movable iron core 7 touches and separates. Here, the movable iron core 7 is provided with a movable contact 33 provided with a pair of movable contacts 34 so that the contact device 2 is opened and closed in conjunction with the movement of the movable iron core 7. 19 are connected.

  A fixed contact 31 is disposed opposite to each movable contact 34. When the movable iron core 7 is in contact with the fixed iron core 6, the contact device 2 composed of the movable contact 34 and the fixed contact 31 is closed. Made. On the other hand, the contact device 2 is opened when the movable iron core 7 is separated from the fixed iron core 6 by the spring force of the return spring 13 provided between the fixed iron core 6 and the movable iron core 7. The electromagnetic switching device shown in FIG. 8 is a so-called sealed contact device in which the contact device 2, the fixed iron core 6, and the movable iron core 7 are accommodated in an airtight space (see, for example, Patent Document 1).

  By the way, in the electromagnetic switching device described above, when the movable iron core 7 located away from the fixed iron core 6 is brought into contact with the fixed iron core 6, the movable iron core 7 collides with the fixed iron core 6, thereby causing an electromagnet. Vibration occurs in the device 1. When this vibration is propagated to the case X, the case X itself vibrates. For example, the case X may come into contact with another member and cause a sound.

  Therefore, as shown in FIG. 9, the fixed iron core 6 and the movable iron core 7 are accommodated in the cylindrical coil bobbin 4 around which the excitation winding 3 is wound, and the coil bobbin 4 is supported by the case X, It is considered that the vibration generated in the electromagnet device 1 is less likely to be propagated to the case X by providing a buffer member 50 made of synthetic rubber between the case X and the coil bobbin 4. In other words, even if vibration is generated in the electromagnet device 1, the shock transmitted from the electromagnet device 1 to the case X is absorbed by the buffer member 50 by compressing the buffer member 50.

Further, in this type of electromagnetic switching device, the case X is provided with a connection terminal 40 penetrating the side wall, and the coil terminal 41 provided integrally with the electromagnet device 1 is coupled to the connection terminal 40, whereby the case X The excitation winding 3 can be energized from the outside via the connection terminal 40.
JP-A-11-232986 (page 3-4, FIG. 1)

  However, since the buffer member 50 is compressed when vibration is generated in the electromagnet device 1 in the electromagnetic switching device of FIG. 9, the electromagnet device 1 moves in the case X by the amount of compression of the buffer member 50. Therefore, when excessive vibration is applied to the case X or the electromagnet device 1, the electromagnet device 1 moves greatly within the case X, and the connection held by the case X and the coil terminal 41 provided integrally with the electromagnet device 1. There is a possibility that a displacement occurs between the terminal 40 and the terminal 40.

  The present invention has been made in view of the above-described reason, and it is possible to prevent a positional deviation between the coil terminal and the connection terminal while preventing the vibration generated in the electromagnet device from propagating to the case. An object is to provide an electromagnetic switchgear that is not.

  According to the first aspect of the present invention, the cylindrical coil bobbin in which the excitation windings are wound in multiple layers, the fixed iron core disposed inside the coil bobbin, and the fixed iron core are aligned in the axial direction of the coil bobbin. An electromagnet device that is arranged inside and has a movable iron core that moves in the axial direction of the coil bobbin by being attracted to the fixed iron core in response to turning on and off of the excitation winding, and linked to the movement of the movable iron core And a contact device having a contact for opening and closing in a box-like case, the case holds a connection terminal coupled to a coil terminal provided integrally with the electromagnet device, and the inner peripheral surface of the case A part of is provided with a support member that supports the electromagnet device by sandwiching the exciting winding in a plane orthogonal to the axial direction of the coil bobbin.

  According to this configuration, the support member for supporting the electromagnet device is provided on a part of the inner peripheral surface of the case by sandwiching the exciting winding in a plane orthogonal to the axial direction of the coil bobbin. The device is supported in the case by the excitation winding being sandwiched between the support members. Since the exciting winding is a multi-layered electric wire, there are many regions other than the metal separated by the electric wire in the exciting winding, and the vibration generated in the electromagnet device is It is propagated while being reduced between the electric wires in the exciting winding, and is difficult to propagate to the support member. As a result, the vibration generated in the electromagnet device is prevented from being propagated to the case. In addition, since the electromagnet device is supported in the case, the electromagnet device does not move in the case, and there is no displacement between the coil terminal and the connection terminal. Furthermore, since the heat generated in the excitation winding when the excitation winding is energized is dissipated from the case through the support member, the temperature rise of the excitation winding can be suppressed. Play.

  The invention of claim 2 is characterized in that, in the invention of claim 1, the support member is a member different from the case, and is made of a material having higher thermal conductivity than the case.

  According to this configuration, since the thermal conductivity of the support member is higher than that of the case, the heat generated in the excitation winding is easily radiated from the case through the support member, and the temperature rise of the excitation winding is further suppressed. it can.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the support member is extended in the winding direction of the excitation winding so as to surround the excitation winding and is used as the excitation winding. It has the holding part which contacts.

  According to this configuration, since the support member has the holding portion, the contact area between the exciting winding and the support member is widened by the holding portion as compared with the configuration without the holding portion, and the electromagnet device in the case Can be firmly supported. Further, since the heat generated in the exciting winding is easily conducted to the support member, the temperature rise of the exciting winding can be further suppressed.

  The invention of claim 4 is characterized in that, in the invention of claim 3, the case has an arm portion that protrudes from an inner peripheral surface and presses the holding portion against the exciting winding.

According to this configuration, the holding portion and the excitation winding can be brought into close contact with each other when the arm portion presses the holding portion against the excitation winding, so that the electromagnet in the case is compared with the configuration without the arm portion. The apparatus can be firmly supported. Further, the heat generated in the exciting winding is easily conducted to the support member, and the temperature rise of the exciting winding can be further suppressed.
The invention of claim 5 is the invention of claim 1 or claim 2, wherein the case is configured by combining two members of a body and a cover, and the support member is attached to either the body or the cover. On the other hand, the electromagnet device is fixed.
According to this configuration, since the body and the cover can be combined in a state where the electromagnet device is fixed to the one of the body and the cover by the support member, the operation of assembling the electromagnet device into the case when the case is assembled Becomes easier.

Plurality invention of claim 6 is the invention of any one of claims 1 to claim 5, wherein the support member, the contact portion between the exciting winding, along the winding direction of the exciting winding It is characterized in that a groove of a book is formed.

  According to this configuration, since the plurality of grooves are formed along the winding direction of the excitation winding at the contact portion of the support member with the excitation winding, the unevenness on the outer peripheral surface of the excitation winding By being caught in the groove, it is possible to reliably prevent the electromagnet device from moving in the direction crossing the groove. Further, since the support member and the excitation winding can be brought into close contact with each other, heat is easily conducted from the excitation winding to the support member, and the temperature rise of the excitation winding can be further suppressed.

According to a seventh aspect of the present invention, in any one of the first to sixth aspects, the support member is bonded to the exciting winding.

  According to this configuration, since the support member is bonded to the exciting winding, the electromagnet device can be firmly supported in the case. Further, since the support member and the excitation winding can be brought into close contact with each other, heat is easily conducted from the excitation winding to the support member, and the temperature rise of the excitation winding can be further prevented.

  In the present invention, a support member that supports the electromagnet device by sandwiching the excitation winding in a plane orthogonal to the axial direction of the coil bobbin is provided on a part of the inner peripheral surface of the case. The excitation winding is supported in the case by being sandwiched between the support members. Since the exciting winding is a multi-layered electric wire, there are many regions other than the metal separated by the electric wire in the exciting winding, and the vibration generated in the electromagnet device is It is propagated while being reduced between the electric wires in the exciting winding, and is difficult to propagate to the support member. As a result, the vibration generated in the electromagnet device is prevented from being propagated to the case. In addition, since the electromagnet device is supported in the case, the electromagnet device does not move in the case, and there is no displacement between the coil terminal and the connection terminal. Furthermore, since the heat generated in the excitation winding when the excitation winding is energized is dissipated from the case via the support member, there is an advantage that the temperature rise of the excitation winding can be suppressed. is there.

  In the following embodiments, a sealed contact device in which a contact device, a fixed iron core, and a movable iron core are housed in an airtight space in the same manner as described as a conventional configuration will be described as an example of an electromagnetic switching device. Therefore, the contact device, the fixed iron core, and the movable iron core need not be sealed.

(Embodiment 1)
The electromagnetic switching device of the present embodiment is one in which an inner unit A provided with an electromagnet device 1 and a contact device 2 is housed in a synthetic resin case X, and the basic configuration of the inner unit A is shown in FIG. Therefore, in the following, the configuration of each part of the inner unit A will be described in more detail than the conventional configuration, with reference to FIG.

  The electromagnet device 1 includes a fixed member that includes the exciting winding 3 and a movable member that is disposed to face the fixed member. In addition to the exciting winding 3, the fixing member is made of synthetic resin and has a cylindrical coil bobbin 4 in which the exciting winding 3 is wound in multiple layers, and a yoke that is made of a magnetic metal material and surrounds the coil bobbin 4. 5 and a fixed iron core 6 disposed inside the coil bobbin 4. The movable member includes a movable iron core 7 that is arranged alongside the fixed iron core 6 in the vertical direction that is the axial direction of the coil bobbin 4 inside the coil bobbin 4. The fixed iron core 6 and the movable iron core 7 together with the yoke 5 form a magnetic path through which the magnetic flux generated by the exciting winding 3 passes. The coil bobbin 4 has a pair of flanges 8 facing in the vertical direction on both the upper and lower sides of the excitation winding 3.

  The yoke 5 includes a yoke upper plate 9 that contacts the upper end surface of the coil bobbin 4, a yoke lower plate 10 that contacts the lower end surface of the coil bobbin 4, and left and right ends of the yoke upper plate 9 and the yoke lower plate 10. It is comprised with a pair of yoke side plate 11 which connects each edge, and is open | released in the front-back direction (direction orthogonal to a paper surface in FIG. 8). The yoke lower plate 10 and the pair of yoke side plates 11 are integrally formed by bending one plate.

  Further, the fixed member has a guide cylinder 12 made of a nonmagnetic material and formed in a bottomed cylindrical shape with an upper surface opening between the fixed iron core 6 and the movable iron core 7 and the coil bobbin 4. In other words, the fixed iron core 6 and the movable iron core 7 are accommodated in the guide cylinder 12 provided inside the coil bobbin 4. The fixed iron core 6 is disposed on the opening side of the guide cylinder 12. Furthermore, the fixed iron core 6 and the movable iron core 7 are each formed in a cylindrical shape whose outer diameter is approximately the same as the inner diameter of the guide cylinder 12, and the movable iron core 7 can move straight in the axial direction of the guide cylinder 12. ing. The moving range of the movable iron core 7 is set between an initial position away from the fixed iron core 6 and a contact position where the movable iron core 7 contacts the fixed iron core 6. Between the fixed iron core 6 and the movable iron core 7, a return spring 13 made of a coil spring and having a spring force for returning the movable iron core 7 to the initial position is interposed.

  Further, a fitting hole 14 into which the upper end portion of the fixed iron core 6 is fitted is provided at the center of the yoke upper plate 9 so that the fixed iron core 6 is fixed to the yoke upper plate 9. Further, the guide cylinder 12 has an opening peripheral portion fixed to the periphery of the fitting hole 14 on the lower surface of the yoke upper plate 9 and a lower end portion in the holding hole 23 provided in the central portion of the yoke lower plate 10. Is inserted. Here, the movable iron core 7 housed in the lower portion of the guide tube 12 is magnetically coupled to the peripheral portion of the holding hole 23 in the yoke lower plate 10.

  According to the configuration described above, when the excitation winding 3 is energized, the opposed surface of the fixed iron core 6 to the movable iron core 7 and the peripheral portion of the holding hole 23 in the yoke lower plate 10 are a pair of magnetic pole portions. Will be magnetized with different polarities. Therefore, when the exciting winding 3 is energized, the movable iron core 7 and the fixed iron core 6 magnetically coupled to the periphery of the holding hole 23 in the yoke lower plate 10 have different polarities, and the movable iron core 7 is It is attracted to the fixed iron core 6 and moves to the contact position. On the other hand, when the energization of the exciting winding 3 is stopped, the movable iron core 7 returns to the initial position by the return spring 13. A part of the return spring 13 is housed in a spring housing recess 24 provided in the fixed iron core 6, and when the movable iron core 7 moves to the contact position, the return spring 13 is compressed and the entire return spring 13 is housed in the spring. The return spring 13 does not prevent the movable iron core 7 from coming into contact with the fixed iron core 6 because it fits in the recess 24.

  In addition, above the electromagnet device 1, a base block 28 formed in a box shape whose lower surface is opened by a heat-resistant material is provided, and terminal holes 29 are provided at two locations on the bottom of the base block 28. Each terminal hole 29 is inserted with a fixed terminal block 30 formed in a cylindrical shape from a copper-based material. A fixed contact 31 is fixed to the lower end surface of each fixed terminal block 30. A casing 32 is provided at the upper end of each fixed terminal block 30 so as to protrude from the entire circumference of the peripheral surface, and the casing 32 is brazed to the base block 28.

  In the base block 28, a flat plate-shaped movable contact 33 made of a conductive material is provided so as to straddle between the two fixed contacts 31, and each portion facing the fixed contact 31 on the upper surface of the movable contact 33 is provided. A movable contact 34 constituting the contact device 2 together with the fixed contact 31 is provided. A shaft hole through which one end of the shaft 19 that connects the movable contact 33 to the movable iron core 7 is inserted is provided at the center of the movable contact 33.

  The shaft 19 is formed in a round bar shape, and is prevented from being detached from the movable contact 33 by a portion protruding upward from the movable contact 33. Further, a contact pressure spring 35 comprising a coil spring through which the shaft 19 is inserted is provided below the movable contact 33, and the movable contact 33 is pressed upward by the spring force of the contact pressure spring 35. It is held at the upper end of the shaft 19. Further, the lower end portion of the shaft 19 is inserted into the fixed iron core 6 and coupled to the movable iron core 7. With this configuration, the movable contact 33 moves in the vertical direction in conjunction with the movement of the movable iron core 7.

  Here, when the movable iron core 7 is in the initial position, the movable contact 34 and the fixed contact 31 are separated from each other (that is, the contact device 2 is opened). On the other hand, when the movable iron core 7 is in the contact position, the movable contact 34. And the fixed contact 31 are in contact (that is, the contact device 2 is closed), and the positional relationship between the movable iron core 7 and the movable contact 33 is set. In short, when the excitation winding 3 is not energized, the contact device 2 is opened to insulate the fixed terminal blocks 30 from each other, and during the period when the excitation winding 3 is energized, the contact device 2. As a result of closing, both the fixed terminal blocks 30 become conductive. The contact pressure between the movable contact 34 and the fixed contact 31 is ensured by the contact pressure spring 35.

  In addition, a cylindrical connecting body 39 that covers the gap between the base block 28 and the yoke upper plate 9 is provided so that the contact device 2, the fixed iron core 6, and the movable iron core 7 are accommodated in the airtight space, and The base block 28, the fixed terminal block 30, the yoke upper plate 9, the guide cylinder 12, and the connecting body 39 are hermetically joined, thereby connecting the base block 28, the fixed terminal block 30, the yoke upper plate 9, and the guide cylinder 12. The space surrounded by the body 39 is an airtight space.

  Further, in the electromagnetic switching device of the present embodiment, as shown in FIG. 1A, the case X is provided with a connection terminal 40 that penetrates the side wall, and is provided integrally with the electromagnet device 1 and is used for excitation winding. By connecting the coil terminal 41 connected to the connection terminal 40 to the connection terminal 40, the excitation winding 3 can be energized from the outside of the case X through the connection terminal 40.

  By the way, in this embodiment, it is prevented that a position shift arises between the coil terminal 41 and the connection terminal 40 by employ | adopting the structure demonstrated below.

That is, on a part of the inner peripheral surface of the case X, as shown in FIG.
A support member 42 is provided to support the electromagnet device 1 by sandwiching the exciting winding 3 in a plane orthogonal to the axial direction of the coil bobbin 4, and the case X is supported by supporting the electromagnet device 1 by the support member 42. On the other hand, the inner unit A is fixed, and the movement of the inner unit A in the case X is prohibited. Here, the support member 42 protrudes from the front and rear side walls facing the excitation winding 3 through the open portion of the yoke 5 in the electromagnet device 1 on the inner peripheral surface of the case X, and the excitation winding 3 and the case X It is provided in a form that fills the gap. That is, a pair of support members 42 are provided so as to sandwich the exciting winding 3 from both sides in the front-rear direction (left-right direction in FIG. 1A). As shown in FIG. 1B, the contact surface 42a of the support member 42 that contacts the excitation winding 3 is formed in a curved surface curved along the outer peripheral surface of the excitation winding 3, and The winding 3 is fixed in the case X by being sandwiched between the pair of support members 42.

  Here, the case X of the present embodiment is configured by combining two members of a body 43 and a cover 44 that can be divided into front and rear, and the body 43 that holds the connection terminal 40 has a fixed terminal block 30 respectively. A pair of through-holes 45 are inserted therethrough. An insulating wall 46 is erected between the through holes 45. The support member 42 is provided on each of the body 43 and the cover 44. Thus, when the body 43 and the cover 44 are combined, the electromagnet device 1 can be sandwiched between the pair of support members 42 in the case X by sandwiching the excitation winding 3 between the pair of support members 42. it can.

  According to the configuration described above, since the electromagnet device 1 can be fixed in the case X by the support member 42, the electromagnet device moves in the case X even if excessive vibration is applied to the case X or the electromagnet device 1. No displacement occurs between the coil terminal 41 provided integrally with the electromagnet device 1 and the connection terminal 40 held by the case X. In addition, since the exciting winding 3 is a coil bobbin 4 in which wires are wound in layers, the exciting winding 3 has a region other than the metal separated by the wires (for example, an insulating coating of synthetic resin, There are a large number of air chambers), and the vibration generated when the movable iron core 7 collides with the fixed iron core 6 in the coil bobbin 4 is reduced between the wires in the exciting winding 3. However, it is attenuated with relatively high efficiency. Therefore, the vibration generated in the electromagnet device 1 is prevented from being propagated to the case X. When the insulating tape is wound around the outer periphery of the exciting winding 3, the vibration generated in the electromagnet device 1 is buffered by the insulating tape, and the vibration is more difficult to propagate to the support member 42 and the case X.

  Further, when the excitation winding 3 is energized, heat is generated in the excitation winding 3, but with the above configuration in which the excitation winding 3 is sandwiched by the support member 42, the heat generated in the excitation winding 3. Is conducted to the case X through the support member 42 and is radiated from the case X, so that there is an advantage that the temperature rise of the exciting winding 3 can be suppressed. The upper limit of the ambient temperature range in which the electromagnetic switching device can be used continuously (hereinafter referred to as the operating temperature range) is the temperature obtained by adding the ambient temperature of the electromagnetic switching device to the rising temperature when the excitation winding 3 is energized. Since the temperature is set to be equal to or lower than the predetermined temperature, when the temperature rise during energization of the exciting winding 3 is reduced, the upper limit value of the operating temperature range can be set higher and the operating temperature range can be set wider.

  As shown in FIG. 2, the contact portion of the support member 42 with the excitation winding 3 employs a configuration in which a plurality of grooves 42 b are formed along the winding direction of the excitation winding 3. Thereby, the movement of the electromagnet apparatus 1 to the direction which crosses the groove | channel 42b can be firmly prohibited because the outermost electric wire of the winding 3 for excitation fits in the groove | channel 42b. In addition, since the exciting winding 3 and the support member 42 can be brought into close contact with each other by providing the groove 42b, heat is easily conducted from the exciting winding 3 to the supporting member 42. The temperature rise of the winding 3 is further suppressed.

  The support member 42 may be formed integrally with the case X so as to protrude from the inner peripheral surface of the case X as shown in FIG. 1B, but as shown in FIG. May be a separate body and disposed between the case X and the exciting winding 3. When the case X and the support member 42 are separated, the support member 42 is formed of a material having a higher thermal conductivity than that of the case X, so that the heat of the excitation winding 3 is passed through the support member 42. It is desirable to facilitate propagation to case X.

  Furthermore, the body 43 shown in FIG. 1A sandwiches a buffer sheet 47 that reduces vibration propagated from the electromagnet device 1 to the case X between the upper surface of the base block 28 and the inner unit A. The inner device A is prevented from moving up and down by being pressed downward. However, when the contact surface 42a of the support member 42 and the exciting winding 3 are bonded, the inner unit A can be firmly supported in the case X, so the buffer sheet 47 is omitted as shown in FIG. It is also possible to do. When the support member 42 and the excitation winding 3 are bonded, the support member 42 and the excitation winding 3 can be brought into close contact with each other, so that heat is conducted from the excitation winding 3 to the support member 42. As a result, the temperature rise of the exciting winding 3 can be further suppressed.

(Embodiment 2)
The electromagnetic switching device of the present embodiment is different from the electromagnetic switching device of the first embodiment in that the electromagnet device 1 is supported in the case X. Other configurations and functions are the same as those of the first embodiment.

  The support member 42 of the present embodiment is separate from the case X as shown in FIG. 5 (b), and one support member 42 (on the cover 44 side) is as shown in FIG. 5 (a). A pair of holding portions 42 c extended along the outer peripheral surface of the exciting winding 3 to a position between the exciting winding 3 and the yoke side plate 11. That is, the pair of holding portions 42 c come into contact with both side surfaces (left and right side surfaces) along the front-rear direction of the excitation winding 3. With this configuration, the support member 42 comes into contact with the excitation winding 3 from four directions (front and rear, left and right) orthogonal to the axial direction of the coil bobbin 4, and the excitation winding 3 is compared with the configuration without the holding portion 42 c. The contact area becomes larger. Therefore, the support of the electromagnet device 1 by the support member 42 becomes stronger. Further, since the heat generated in the exciting winding 3 is easily conducted to the support member 42, there is an effect that the temperature rise of the exciting winding 3 can be further suppressed.

  Further, as shown in FIG. 6B, an arm portion 48 that protrudes from the inner peripheral surface of the case X and presses the holding portion 42 c against the excitation winding 3 may be provided. The arm portion 48 protrudes from both sides of the support member 42 on the rear wall of the cover 44, and the tip portion is formed so as to be inserted between the holding portion 42 c and the yoke side plate 11. In the present embodiment, a pair of arm portions 48 sandwiching the exciting winding 3 is taken as one set, and two sets of arm portions 48 are provided in the vertical direction as shown in FIG. In addition, a pressing protrusion 49 that protrudes toward the holding portion 42 c is provided at the tip of each arm portion 48.

  By providing the arm portion 48 in the case X in this manner, the holding portion 42c and the exciting winding 3 are in close contact with each other, and the electromagnet device 1 is firmly supported in the case X as compared with the configuration without the arm portion 48. can do. In addition, the heat generated in the exciting winding 3 is easily conducted to the holding portion 42c, and the temperature rise of the exciting winding 3 can be further suppressed.

  In the present embodiment, the holding portion 42c is provided only on one of the support members 42, but the holding portion 42c may be provided on both support members 42.

(Embodiment 3)
The electromagnetic switching device of the present embodiment is different from the electromagnetic switching device of the first embodiment in that the electromagnet device 1 is supported in the case X. Other configurations and functions are the same as those of the first embodiment.

  In the present embodiment, as shown in FIG. 7B, the support member 42 (hereinafter referred to as a first support member) formed integrally with the body 43, and the body 43 and the cover 44 are formed separately. The electromagnet device 1 is supported by sandwiching the exciting winding 3 from both sides in the front-rear direction with the support member 42 ′ (hereinafter referred to as a second support member). The second support member 42 ′ is provided with a locking portion 42d extending between the exciting winding 3 and the yoke side plate 11, and a first support member is provided at the tip of the locking portion 42d. Locking claws 42f that fit into locking holes 42e formed on the left and right side surfaces of 42 are projected. In the present embodiment, a pair of locking portions 42d sandwiching the first support member 42 is taken as a set, and two sets of locking portions 42d are provided in the upper direction as shown in FIG. 7A.

  According to the configuration described above, the electromagnet device 1 is fixed to the body 43 by the first support member 42 and the second support member 42 ′. Accordingly, since the body 43 and the cover 44 can be combined after the electromagnet device 1 is fixed in advance to the body 43 with the support members 42 and 42 ′, the electromagnet device 1 is incorporated into the case X when the case X is assembled. There is an advantage that work is simplified.

  In addition, in this embodiment, although the structure which fixes the electromagnet apparatus 1 with respect to the body 43 was shown, it is good also as a structure which fixes the electromagnet apparatus 1 with respect to the cover 44. FIG.

The structure of Embodiment 1 of this invention is shown, (a) is a longitudinal cross-sectional view, (b) is a cross-sectional view. It is a perspective view which shows a supporting member same as the above. It is a cross-sectional view which shows another structure same as the above. It is a longitudinal cross-sectional view which shows another structure same as the above. The structure of Embodiment 2 of this invention is shown, (a) is a longitudinal cross-sectional view, (b) is a cross-sectional view. The other structure same as the above is shown, (a) is a longitudinal sectional view, and (b) is a transverse sectional view. The structure of Embodiment 3 of this invention is shown, (a) is a longitudinal cross-sectional view, (b) is a cross-sectional view. It is sectional drawing which shows a prior art example. It is sectional drawing which shows another prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electromagnet apparatus 2 Contact apparatus 3 Winding for excitation 4 Coil bobbin 6 Fixed iron core 7 Movable iron core 40 Connection terminal 41 Coil terminal 42,42 'Support member 48 Arm part X Case 42b Groove 42c Holding part

Claims (7)

  A cylindrical coil bobbin with multiple windings for excitation, a fixed iron core arranged inside the coil bobbin, and a fixed iron core are arranged inside the coil bobbin along the axial direction of the coil bobbin. An electromagnet device having a movable iron core that is attracted to the fixed iron core and moves in the axial direction of the coil bobbin in response to turning on and off of the winding, and a contact that opens and closes in conjunction with the movement of the movable iron core. The contact device is provided in a box-shaped case, the case holds a connection terminal coupled to a coil terminal provided integrally with the electromagnet device, and a coil bobbin is provided on a part of the inner peripheral surface of the case. An electromagnetic switch comprising a support member for supporting an electromagnet device by sandwiching an excitation winding in a plane perpendicular to the axial direction of the magnet.   The electromagnetic switch according to claim 1, wherein the support member is a member different from the case, and is made of a material having higher thermal conductivity than the case.   The support member includes a holding portion that extends in a winding direction of the excitation winding so as to surround the excitation winding and contacts the excitation winding. The electromagnetic switchgear described in 1.   4. The electromagnetic switch according to claim 3, wherein the case has an arm portion protruding from an inner peripheral surface and pressing the holding portion against the exciting winding. The said case is comprised combining 2 members, a body and a cover, The said supporting member fixes the said electromagnet apparatus with respect to either one of a body and a cover, The Claim 1 or Claim characterized by the above-mentioned. Item 3. The electromagnetic switching device according to Item 2 . The support member, the contact portion between the exciting winding, claims 1, wherein a plurality of grooves along the winding direction of the excitation winding is formed of claim 5 The electromagnetic switching device according to any one of claims. The electromagnetic switch according to any one of claims 1 to 6, wherein the support member is bonded to the exciting winding .

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