JP5566517B2 - Manufacturing method of electromagnet - Google Patents

Description

The present invention relates to a process for the preparation of an electromagnet used in the polarized electromagnetic relay.

  In a polarized electromagnetic relay, an electromagnet device including an electromagnet and a permanent magnet and a contact portion including a plurality of contact members are insulated from each other and assembled to the base, and the operation of the electromagnet device is between the electromagnet device and the contact portion. It is known that a force transmission member is installed that moves by moving the contact member to open and close the contact member of the contact portion. For example, Patent Document 1 is a polarized electromagnetic relay of this type, in which an electromagnet device includes a magnetic movable body (referred to as an electrode contact portion) in which a permanent magnet is sandwiched between a pair of iron plates. A polarized electromagnetic relay configured to linearly move in the direction parallel to the central axis of the coil by exciting the coil is disclosed. The configuration of such an electromagnet device generally has an outer dimension of the electromagnetic relay in the coil radial direction as compared to a configuration in which a magnetic movable body including a permanent magnet is linearly moved in a direction perpendicular to the coil center axis by excitation of the electromagnet. It has the advantage that it can be effectively reduced.

  In the polarized electromagnetic relay disclosed in Patent Document 1, two large and small U-shaped iron plates are combined by sandwiching a magnet in the magnetization direction between the central portions thereof, whereby the length of the magnetic movable body is increased. At each end in the direction, end portions of both iron plates each having a magnetic pole formed by a magnet are arranged opposite to each other. Similarly, the iron core of the electromagnet is a U-shaped member, and both end portions in the longitudinal direction extend outward in the radial direction of the coil. At each end in the longitudinal direction of the magnetic movable body, the end portion of the iron core of the electromagnet is inserted between the end portions of a pair of iron plates on which different magnetic poles are formed. The magnetic movable body is integrated into the force transmission member, which is a molded part, and the electromagnet operates under the above-mentioned relative arrangement, so that the force transmission member moves linearly with the magnetic movable body to open and close the contact portion. Let

  In the polarized electromagnetic relay, the electromagnet includes a winding frame around which a conducting wire forming a coil is wound, and three or more coil terminals that are fixedly supported on the winding frame and connect the coil conducting wire to each other. It is known (see, for example, Patent Document 2). In this type of polarized electromagnetic relay, the coil is configured with two excitation circuits each including a terminal pair consisting of any two of the three or more coil terminals, so that the operating state (that is, the make-up) It is possible to quickly switch between the contact closed state) and the return state (that is, the break contact closed state), and it is possible to obtain an advantage that the contact portion can be stably maintained in the contact closed state in any state.

JP 58-181227 A JP 2005-243367 A

  In the polarized electromagnetic relay disclosed in Patent Document 1 described above, the pair of U-shaped iron plates constituting the magnetic movable body has a length corresponding to the entire length of the U-shaped iron core of the electromagnet, so that the movable including the force transmission member is included. There is a risk that the size and weight of the part become relatively large, and as a result, the response (that is, the operation time) and the external dimensions of the relay are affected. In addition, since the U-shaped iron core of the electromagnet and the both U-shaped iron plates of the magnetic movable body simultaneously exert magnetic action at both longitudinal ends, each component can be reduced in order to reduce variation in operating performance. It is necessary to improve the dimensional accuracy, and as a result, there is a concern that the manufacturing cost increases.

  Further, as described in Patent Document 2 described above, in a polarized electromagnetic relay having an electromagnet having three or more coil terminals, a conductive wire is connected to each of the coil terminals to form a coil on the winding frame. The issue is to implement automatic winding work safely and accurately.

The purpose of the present invention, in the electromagnet used in the polarized electromagnetic relay, three automatic winding process for forming a coil of conductive wire by connecting bobbin on the respective coil terminals, safely and accurately performed An object of the present invention is to provide an electromagnet manufacturing method that can be used.

In order to achieve the above object, an invention according to claim 1 is a method for producing an electromagnet comprising a winding frame for holding a coil and three coil terminals fixed to the winding frame. The first coil terminal, the second coil terminal, and the third coil terminal are aligned in the first direction orthogonal to the central axis of the coil formed on the body portion at an extension portion of one end in the longitudinal direction of the winding frame having the portion. In addition, the binding portions of the first coil terminal and the second coil terminal at both ends in the alignment direction protrude from the extension portion in the second direction orthogonal to both the central axis and the first direction. In addition, the tie portion of the third coil terminal at the center in the alignment direction is installed so as to protrude from the extended portion in a third direction parallel to the central axis, and the conducting wire is connected to the first coil terminal and the third coil. Tangled with each of the coiled portions of the coil terminals The first coil terminal and the third coil terminal are wound around the body portion to form a first coil portion constituting a first excitation circuit, and a conducting wire is connected to the second coil terminal and the second coil terminal. A second coil portion that wraps around each of the three coil terminals and wraps around the body portion between the second coil terminal and the third coil terminal to constitute a second excitation circuit. The core portion is inserted into the body portion from the side of the extended portion, and the entangled portion of the third coil terminal entangled with the conductive wire is connected to the entangled portion of the first and second coil terminals. Provided is a manufacturing method of bending to a parallel position .

The first coil portion and the second coil portion can be formed by a single continuous wire .

Alternatively, the first coil portion can be formed by one conductive wire, and the second coil portion can be formed by another single conductive wire .

According to the present invention, it is possible to safely and accurately carry out an automatic winding operation in which a conductive wire is connected to each of the three coil terminals to form a coil on the winding frame .

It is a disassembled perspective view which shows the polarized electromagnetic relay by the related technique of this invention. It is sectional drawing which shows typically the main component of the polarized electromagnetic relay of FIG. 1 in order to demonstrate the function. It is an end view of the base used in the polarized electromagnetic relay of FIG. It is a perspective view of the force transmission member used with the polarized electromagnetic relay of FIG. The perspective view which shows the main components of the polarized electromagnetic relay of FIG. 1 from the back surface side of a base, (a) The state before assembling an electromagnet to a base, (b) The state where an electromagnet was assembled to a base is shown, respectively. . It is a disassembled perspective view explaining the assembly work of the polarized electromagnetic relay of FIG. FIG. 2 is an end view of main components of the polarized electromagnetic relay of FIG. 1, showing (a) a state during coil wire-end binding work, and (b) a state after coil wire-end binding. It is a perspective view of the electromagnet by the modification which can be used with the polarized electromagnetic relay of this invention. It is a perspective view of the electromagnet by another modification. It is sectional drawing of the main components containing the electromagnet of FIG. 9, and is a figure corresponding to FIG. It is a figure which shows the coil assembly by the related technique of this invention, (a) The perspective view seen from upper direction, (b) The perspective view seen from the downward direction. It is a front view of the coil assembly of FIG. It is the (a) top view and (b) bottom view of the coil assembly of FIG. It is the (a) left side view of the coil assembly of FIG. 12, and the (b) right side view. It is a front view of the coil assembly by a modification. It is (a) top view and (b) bottom view of the coil assembly of FIG. It is the (a) left view of the coil assembly of FIG. 15, and the (b) right view. It is a front view of the coil assembly by other related technology of this invention. It is the (a) top view and (b) bottom view of the coil assembly of FIG. It is a figure which shows the assembly procedure of the electromagnet using the coil assembly of FIG. 11, (a) The state before iron core assembly | attachment, (b) The state after iron core assembly | attachment is shown.

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Corresponding components are denoted by common reference symbols throughout the drawings.
Referring to the drawings, FIG. 1 is a diagram showing a polarized electromagnetic relay 10 according to the related art of the present invention in an exploded state, and FIG. 2 shows the major components of the polarized electromagnetic relay 10. FIG. 2 is a diagram schematically illustrating the function. 3 and 4 show other main components of the polarized electromagnetic relay 10 alone.

  As shown in FIGS. 1 and 2, the polarized electromagnetic relay 10 includes a base portion 12, an electromagnet device 14 assembled to the base portion 12, a contact portion 16 insulated from the electromagnet device 14 and assembled to the base portion 12, and an electromagnet device. 14 and the contact portion 16, and a force transmission member 18 that moves by the action of the electromagnet device 14 to open and close the contact portion 16.

  The base 12 is made of an electrically insulating resin molded product, and integrally includes a first portion 20 where the electromagnet device 14 is installed and a second portion 22 where the contact portion 16 is installed (FIG. 1). The first portion 20 has a cylindrical wall 24 that partially surrounds the electromagnet device 14 (FIG. 3). The second portion 22 has a plurality of attachment holes (not shown) for individually attaching a plurality of contact members described later of the contact portion 16. The cylindrical wall 24 of the first portion 20 is interposed between the electromagnet device 14 and the contact portion 16 to ensure electrical insulation therebetween.

  The electromagnet device 14 includes an electromagnet 26, an armature 28 driven by the electromagnet 26, and a permanent magnet 30 carried on the armature 28. As shown in FIG. 2, the electromagnet 26 is connected to the winding frame 32, a coil 34 supported around the winding frame 32 and having a central axis 34 a, an iron core 36 received in the winding frame 32, and the iron core 36. And a yoke 38 extending outside the coil 34. The winding frame 32 is an electrically insulating resin molded product, and has a hollow cylindrical body 40 having a predetermined length, and annular flat plate-like first and second flanges provided at both longitudinal ends of the body 40. 42, 44. The coil 34 is formed by tightly winding a required length portion of a conducting wire around the body portion 40 of the winding frame 32, and is fixedly held between both flange portions 42 and 44 of the winding frame 32.

  The iron core 36 is a columnar member made of, for example, magnetic steel, and is arranged along the central axis 34 a of the coil 34 and is accommodated in the body portion 40 of the winding frame 32, and the shaft portion 46. And a flat plate-like head portion 48 that extends outward in the radial direction of the coil 34 from one end in the axial direction (FIG. 2). The head portion 48 of the iron core 36 is disposed so as to be exposed on the outer surface of the first flange portion 42 of the winding frame 32, and the outer edge region 48 a slightly protrudes outward in the coil radial direction from the first flange portion 42.

Yoke 38 is, for example, an L-shaped member formed of magnetic steel, the shaft portion 46 of the iron core 3 6, the axial end 46a opposite the head 48, for example, fixedly by caulking Connected to form a magnetic path around the coil 34 (FIG. 2). The yoke 38 is connected to the shaft portion 46 of the iron core 36 and is arranged along the second flange portion 44 of the winding frame 32, the short connecting portion 50 and the connecting portion 50. And a long main portion 52 that is spaced apart from one side and extends substantially parallel to the coil center axis 34a. Terminal region 52a of the main portion 52 of the yoke 38, at the side near the first flange portion 42 of the bobbin 32, against the outer edge region 48a of the head 48 of the iron core 3 6 disposed opposite at a predetermined distance The

  The armature 28 includes first and second conductive plate elements 54 and 56 each having the same shape and each formed of, for example, magnetic steel. The permanent magnet 30 has a rectangular parallelepiped shape, and an N pole and an S pole are formed on a pair of side surfaces including the longest edge, respectively. The first and second conductive plate elements 54 and 56 are arranged to face each other with a space therebetween, and the permanent magnet 30 is fixedly sandwiched between them in the magnetization direction (the direction of the magnetic field between the NS poles shown). At the same time, this magnetization direction is oriented parallel to the central axis 34a of the coil 34, and is disposed in the vicinity of the side of the first flange portion 42 of the winding frame 32 (FIG. 2).

  The armature 28 (first and second conductive plate elements 54, 56) constitutes a magnetic movable body that moves by excitation of the electromagnet 26 in cooperation with the permanent magnet 30. This magnetic movable body has a portion (lower half portion in the figure) 54a of the first conductive plate element 54 between the outer edge region 48a of the head portion 48 of the iron core 36 and the end region 52a of the main portion 52 of the yoke 38. In the state of being inserted into the coil, it is installed so as to be capable of linear reciprocation in a direction parallel to the coil center axis 34a (the direction of arrow α in FIG. 2). Therefore, the range of reciprocation of the armature 28 is such that the lower half portion 54a of the first conductive plate element 54 has an outer edge region 48a of the head portion 48 of the iron core 36 and an end region 52a of the main portion 52 of the yoke 38, respectively. Is defined as a movement limit point at both front and rear ends.

  As shown in FIG. 2, the contact portion 16 is disposed so as to be separated from and opposed to a movable contact spring member 60 that carries a movable contact 58 that interlocks with the force transmission member 18, and one surface of the movable contact spring member 60. A first fixed contact member 64 carrying a make fixed contact 62 that is opposed to the movable contact 58 so as to be able to come into contact with the other surface of the movable contact spring member 60 on the opposite side of the first fixed contact member 64 and spaced apart from the other surface. And a second fixed contact member 68 that carries a break fixed contact 66 that faces the movable contact 58 so as to come into contact therewith. The movable contact spring member 60 is formed, for example, by punching from a thin plate of phosphor bronze for spring, and exhibits a required spring biasing force according to the force received from the force transmission member 18. The contact portion 16 including these three contact members 60, 64, and 68 has a second fixed contact member 68 disposed on the side close to the electromagnet 26 via the cylindrical wall 24 (FIG. 1) of the base portion 12. The contacts 58, 62, 66 are arranged so as to be aligned in a direction parallel to the central axis 34 a of the coil 34 of the electromagnet 26.

  The movable contact 58 carried by the movable contact spring member 60 corresponds to the above-described linear movement operation of the magnetic movable body (the armature 28 and the permanent magnet 30) above the second portion 22 (FIG. 1) of the base 12. The contacts can be opened and closed alternately with respect to the make fixed contact 62 and the break fixed contact 66 which are displaced in a swinging manner and face each other in the swinging direction. The movable contact 58 includes a make movable contact element 58a that contacts the make fixed contact 62 and a break movable contact element 58b that contacts the break fixed contact 66 (FIG. 2).

As shown in FIG. 4, the force transmission member 18 is a substantially rectangular frame-like member in plan view, and is integrally formed from, for example, a resin material. The force transmitting member 18, the long axis of the rectangular outline, arranged in a direction parallel to the center axis 34a of the coil 34 of the electromagnet 26, the upper end portion 70 of the cylindrical wall 24 of the base 1 2 (3), It is supported so as to be slidable in the longitudinal direction. One end of the force transmission member 18 in the longitudinal direction is provided with a pair of applied points 72 that engage with the movable contact spring member 60 of the contact portion 16. Further, the armature 28 is fixedly connected to the other end region in the longitudinal direction of the force transmission member 18 with the permanent magnet 30 sandwiched between the first and second conductive plate elements 54 and 56. . In the illustrated configuration , a space 74 (FIG. 1) that receives the armature 28 and the permanent magnet 30 in a fixed manner is formed in the other end region in the longitudinal direction of the force transmission member 18. The magnet 30 is fixed by press-fitting or using an adhesive, for example. When the force transmission member 18 in which the armature 28 and the permanent magnet 30 are properly fixed is properly attached to the cylindrical wall 24 of the base portion 12 and the movable contact spring member 60 of the contact portion 16, the armature 28, the permanent magnet 30 and the electromagnet. 26 are positioned in the above-described relative arrangement.

  The force transmission member 18 is linearly moved in the direction parallel to the coil center axis 34a in accordance with the linear movement of the armature 28 in the direction parallel to the coil center axis 34a by the driving of the electromagnet 26. 28 is transmitted to the movable contact spring member 60 of the contact portion 16, thereby opening and closing the contact portion 16. Here, the movable contact spring member 60 elastically biases the movable contact 58 in a direction away from the make fixed contact 62 of the first fixed contact member 64 by its own spring action, and in a state where no external force is received, The movable contact 58 (break movable contact element 58b) is configured to be pressed against the break fixed contact 66 of the second fixed contact member 68 (FIG. 2).

  Therefore, when the electromagnet 26 is at rest (non-excitation), the armature 28 is under the spring biasing force of the movable contact spring member 60 transmitted via the force transmission member 18 and the lower half of the first conductive plate element 54. The portion 54 a is placed in a rest position that is spaced from the end region 52 a of the main portion 52 of the yoke 38 and abuts against the outer edge region 48 a of the head 48 of the iron core 36. At this time, a magnetic attractive force by the permanent magnet 30 acts between the first conductive plate element 54 and the head portion 48 of the iron core 36, whereby the movable contact 58 of the contact portion 16 becomes a break fixed contact 66. It is held stationary at the break contact closed position where it makes conductive contact.

  When the electromagnet 26 is actuated (excited) in the make contact closing direction at this resting position, the armature 28 has the first conductive property due to the magnetic attractive force acting synergistically between the electromagnet 26 and the permanent magnet 30. The lower half portion 54a of the plate element 54 is in contact with the end region 52a of the main portion 52 of the yoke 38, and the lower half portion 56a of the second conductive plate element 56 is the outer edge region 48a of the head 48 of the iron core 36. It displaces to the 1st operation position contacted with (FIG. 2). This linear displacement operation of the armature 28 is transmitted to the movable contact spring member 60 of the contact portion 16 by the force transmission member 18 that linearly moves integrally with the armature 28. In the first operating position, the synergism by the electromagnet 26 and the permanent magnet 30 is between the first conductive plate element 54 and the yoke main part 52 and between the second conductive plate element 56 and the core 48. The magnetic attraction force acts, so that the contact portion 16 is stabilized at the make contact closed position where the movable contact 58 is in conductive contact with the make fixed contact 62 against the spring biasing force of the movable contact spring member 60. And is held stationary.

  When the excitation of the electromagnet is stopped at the first operating position described above, the armature 28 is held at the first operating position by the action of the permanent magnet 30, and therefore the contact portion 16 is also held stationary at the make contact closed position. The Therefore, when the electromagnet 26 is actuated (excited) in the break contact closing direction, the armature 28 has the lower half portion of the first conductive plate element 54 due to the magnetic repulsion between the electromagnet 26 and the permanent magnet 30. 54 a is moved away from the end region 52 a of the main portion 52 of the yoke 38 to the second operating position where it abuts on the outer edge region 48 a of the head 48 of the iron core 36. During this displacement operation, the force transmission member 18 also acts to transmit the spring biasing force of the movable contact spring member 60 of the contact portion 16 to the armature 28. In the second operating position, a synergistic magnetic attractive force by the electromagnet 26 and the permanent magnet 30 acts between the first conductive plate element 54 and the iron core head 48, whereby the contact portion 16 is moved to the movable contact. 58 is stably held stationary at the break contact closed position where the 58 is in conductive contact with the break fixed contact 66.

  In the polarized electromagnetic relay 10 having the above configuration, the electromagnet device 14 linearly moves the armature 28 and the permanent magnet 30 which are magnetic movable bodies in a direction parallel to the central axis 34 a of the coil 34 by the operation of the electromagnet 26. Therefore, there is an advantage that the outer dimensions in the coil radial direction of the entire relay can be effectively reduced. In addition, the first and second conductive plate elements 54 and 56 constituting the armature 28 are configured to sandwich the permanent magnet 30 in the magnetization direction and to direct the magnetization direction parallel to the coil center axis 34a. Therefore, the structure of the magnetic movable body composed of the armature 28 and the permanent magnet 30 can be simplified and miniaturized. Furthermore, the outer edge region of the head portion 48 of the iron core 36 of the electromagnet 26 is placed at a desired position around the coil by using a yoke 38 that can form a desired magnetic path outside the coil as a member separate from the iron core 36. 48a and the end region 52a of the main portion 52 of the yoke 38 can be easily secured with an armature drive space disposed opposite to and spaced from each other, so that the relative arrangement of the electromagnet 26 and the armature 28 can be ensured. The degree of freedom is improved. Since the armature 28 is installed so as to be linearly movable in a direction parallel to the coil center axis 34a in a state where the portion 54a of the first conductive plate element 54 is inserted into the armature drive space, mainly the armature 28 is installed. By optimizing the shape and size of the first conductive plate element 54, the operation accuracy of the armature 28 can be ensured. As described above, in the polarized electromagnetic relay 10, the moving direction of the magnetic movable body including the armature 28 and the permanent magnet 30, the magnetization direction of the permanent magnet 30, and the moving direction of the force transmission member 18 are all in the coil center. By adopting the direction parallel to the axis 34a, the structure of the magnetic movable body and the drive configuration thereof are simplified, thereby improving the responsiveness (operation time) of the polarized electromagnetic relay 10 and improving the external dimensions and Manufacturing costs are effectively reduced.

  Further, in the polarized electromagnetic relay 10 having the above configuration, the armature 28 is fixed to the force transmission member 18 with the permanent magnet 30 sandwiched between the first and second conductive plate elements 54 and 56. Since they are connected, the force transmission member 18 can transmit the linear movement operation of the armature 28 to the contact portion 16 efficiently and accurately. In addition, the force transmission member 18 has a rectangular contour in which a long axis is arranged in a direction parallel to the coil center axis 34 a, and has a force application point 72 to the contact portion 16 at one end in the longitudinal direction and the other end in the longitudinal direction. Since the armature 28 is fixed to the region (the space 74), the magnetic movable body including the armature 28 and the permanent magnet 30 and the contact portion 16 are sufficiently separated from each other, Magnetic influence can be reduced as much as possible.

In the polarized electromagnetic relay 10, as shown in FIG. 2, the coil 34 of the electromagnet 26 includes a first outer circumferential region 34b adjacent to the main portion 52 of the yoke 38, the base 12 a second adjacent (FIG. 1) Outer peripheral region 34c. And the force transmission member 18 is arrange | positioned so that the movement along the main part 52 of the yoke 38 is carried out in the vicinity of the 1st outer peripheral area | region 34b of the coil 34. As shown in FIG. According to such a configuration, from the viewpoint of the space dimension occupied by the polarized electromagnetic relay 10, the installation space of the force transmission member 18 as the installation space of the yoke 38 that forms a magnetic path around the coil 34 of the electromagnet 26. In addition, the idle space formed between the cylindrical wall 24 and the coil 34 inside the cylindrical wall 24 of the base 12 can be reduced as much as possible. As a result, the number of turns of the coil 34 can be increased without increasing the outer dimensions of the polarized electromagnetic relay 10, and as a result, the electrical performance of the polarized electromagnetic relay 10 can be improved.

  As shown in FIG. 3, the cylindrical wall 24 of the base 12 has a cylindrical inner peripheral surface 24 a corresponding to the cylindrical contour of the coil 34 of the electromagnet 26. With such a configuration, the idle space formed between the cylindrical wall 24 of the base portion 12 and the coil 34 can be further effectively reduced. As shown in the figure, a rectangular space 76 that can accommodate the main portion 52 of the yoke 38 of the electromagnet 26 is formed in the upper end portion 70 of the cylindrical wall 24 of the base portion 12. Further, a pair of guide grooves 80 slidably engaged with protrusions 78 (FIG. 4) provided on the force transmission member 18 adjacent to the lower side of the upper end portion 70 on the cylindrical wall 24 of the base portion 12. Is formed. The guide grooves 80 guide the force transmission member 18 in a direction parallel to the coil center axis 34a when the electromagnet device 14 is operated.

  The polarized electromagnetic relay 10 further includes a case 82 that houses the electromagnet device 14, the contact portion 16, and the force transmission member 18 and is fixed to the base portion 12 (FIG. 1). The case 82 is made of an electrically insulating resin molded product having a rectangular parallelepiped outline, and an opening 84 for inserting the electromagnet device 14, the contact portion 16, and the force transmission member 18 into the portion corresponding to one surface of the rectangular parallelepiped outline is provided. Defined. On the other hand, the base 12 has a bottom wall 86 including a raised portion 86a that is exposed from the case 82 and protrudes outward when secured to the case 82 (FIG. 3). As shown in FIG. 5, the bottom wall 86 is integrally formed over both the first and second portions 20 and 22 of the base portion 12 and constitutes the lower end portion of the cylindrical wall 24. A substantially flat annular surface 86b surrounding the raised portion 86a is formed on the bottom wall 86 of the base portion 12, and an adhesive (not shown) for fixing the case 82 to the base portion 12 along the annular surface 86b. Is applied.

  Further, a recess 86c is formed in the bottom wall 86 of the base 12 on the opposite side of the raised portion 86a by a part of the cylindrical inner peripheral surface 24a of the cylindrical wall 24 (FIG. 3). The coil 34 of the electromagnet 26 is received in the recess 86c of the base bottom wall 86 in the second outer peripheral region 34c. According to such a configuration, the cylindrical portion of the cylindrical wall 24 can be effectively utilized by using the raised portion 86a inevitably provided in order to form the adhesive application surface (annular surface) 86b described above on the base portion 12. Since the recess 86c can be easily formed in the peripheral surface 24a, the reduction in the height of the polarized electromagnetic relay 10 can be promoted.

In the polarized electromagnetic relay 10, the bobbin 32 of the electromagnet 26 is further provided with an extension 88 (FIG. 1) extending from the first flange portion 42 (FIG. 2) outwardly. A coil terminal 90 to which a wire end portion of the coil 34 is connected is fixedly supported on the extension portion 88 of the winding frame 32 . Coils 34 has two conductors (not shown), for connecting the line ends thereof lead to each of three coil terminals 90, aligned in a direction orthogonal to the coil center axis 34a, the winding It is supported by the extended portion 88 of the frame 32. With this configuration, the polarized electromagnetic relay 10 is a two-winding type that can quickly switch the excitation direction of the electromagnet 26 between the make contact closing direction and the break contact closing direction. Note that an assembly including the winding frame 32, the coil 34, and the coil terminal 90 (that is, the iron core 36 and the yoke 38 removed from the electromagnet 26) is referred to as “coil assembly” in the present application.

  As shown in FIG. 5, when the electromagnet device 14 is inserted into the cylindrical wall 24 of the base 12 and properly assembled to the base 12, the reel 32 of the electromagnet 26 has a predetermined area 88 a of the extension 88. In cooperation with the annular surface 86b of the twelve bottom walls 86, the above-described adhesive application surface for fixing the case 82 to the base 12 is formed. According to such a configuration, since the winding frame 32 of the electromagnet 26 can be simultaneously fixed to the base 12 in the adhesive application process for fixing the case 82 to the base 12, the polarized electromagnetic relay 10 is not increased without increasing the number of manufacturing steps. The structural stability of can be improved. As shown in FIG. 5, at the predetermined position of the bottom wall 86 of the base portion 12, there are three attachment holes 92 to which the contact members 60, 64, 68 of the contact portion 16 are individually attached, and coil terminals 90, respectively. And three support holes 94 are formed.

  When the electromagnet 26 is assembled, the polarized electromagnetic relay 10 having the above-described configuration is connected by connecting a coil end 90 to a coil terminal 90 by installing a coil 34 on a winding frame 32 as shown in FIG. After that, the shaft portion 46 of the iron core 36 is inserted into the body portion 40 from the first flange portion 42 side of the winding frame 32. In order to enable such an assembling operation, when the conducting wire of the coil 34 is entangled with the coil terminal 90, the entangled portions 90a of the three coil terminals 90 are substantially upright to easily perform the entanglement operation. It arrange | positions to a position (FIG. 7 (a)). Then, after the binding work is completed, before attaching the iron core 36 to the winding frame 32, one central binding portion 90 a of the three coil terminals 90 is placed on the extension portion 88 of the winding frame 32. Bend into a shape that does not interfere with the shaft 46 (FIG. 7B). Thereby, the shaft portion 46 of the iron core 36 can be inserted into the body portion 40 of the winding frame 32.

Figure 8 shows the electromagnet 96 according to a modification to be installed in a polarized electromagnetic relay. The electromagnet 96 is obtained by partially changing the structure of the yoke 38 in the electromagnet 26 of the polarized electromagnetic relay 10 described above, and corresponding components are denoted by common reference numerals and description thereof is omitted.

The electromagnet 96 is a magnetic movable body in which the end region 52a of the main portion 52 of the yoke 38 has the permanent magnet 30 sandwiched between the first and second conductive plate elements 54 and 56 of the armature 28. It has the structure formed as the cyclic | annular part 98 enclosed through the clearance gap. In this configuration, a portion 54a, 56a (FIG. 2) of each of the first and second conductive plate elements 54, 56 is on both sides of the head 48 of the iron core 36, and an outer edge region 48a (FIG. 2) of the head 48. And the annular portion 98 of the end region 52a. In this state, the armature 28 can be linearly moved in the direction parallel to the central axis 34 a of the coil 34 by the operation of the electromagnet 96 as described above. According to this structure, since both the magnetic action of the electromagnet 9 6 and the permanent magnet 30 becomes to work equally to both the first and second electrically conductive plate elements 54, 56 of the armature 28, the contacts The linear movement form of the armature 28 for opening and closing the part 16 is balanced in the make contact closing direction and the break contact closing direction. As a result, the reliability and accuracy of the operation of the polarized electromagnetic relay, particularly in signal switching applications, are improved.

9 and 10 show an electromagnet 100 according to another modification to be installed in a polarized electromagnetic relay. The electromagnet 100 is obtained by partially changing the structure of the yoke 38 in the electromagnet 26 of the polarized electromagnetic relay 10 described above, and corresponding constituent elements are denoted by common reference numerals and description thereof is omitted.

  In the electromagnet 100, the yoke 38 includes a main portion 52 disposed in the vicinity of the force transmission member 18 on one side of the coil 34, and the base 12 (see FIG. 1) and a sub-portion 102 that is arranged adjacent to the coil central axis 34a and extends substantially parallel to the coil central axis 34a. The secondary portion 102 of the yoke 38 is bent and extended in an L shape so that the end region 102 a is spaced apart and opposed to the outer side in the axial direction of the head portion 48 of the iron core 36. The armature 28 has a portion 54a of the first conductive plate element 54 inserted between the outer edge region 48a of the iron core head 48 and the terminal region 52a of the yoke main portion 52, and the second conductive plate. A portion 56 a of the element 56 is inserted between the outer edge region 48 a of the iron core head 48 and the end region 102 a of the yoke sub-portion 102. In this state, the armature 28 can linearly move in a direction parallel to the central axis 34a of the coil 34 by the operation of the electromagnet 100 as described above. Even with such a configuration, the linear movement form of the armature 28 for opening and closing the contact portion 16 can be balanced in the make contact closing direction and the break contact closing direction.

In each configuration described above, the end region 52a of the main portion 52 of the yoke 38 has a fracture surface 104 as a result of stamping the yoke 38 (FIGS. 1, 8, and 9). Then, at least one of the first and second conductive plate elements 54 and 56 of the armature 28 is configured to be opposed to the fracture surface 104 of the end region 52a so as to be in contact with each other at its part 54a and 56a. The With this configuration, the polarized electromagnetic relay is adapted to that particular external dimensions of the coil diameter direction of the entire relay can be more effectively reduced.

11 to 14 show the coil assembly 110 according to the related art can be used to polarized electromagnetic relay. In the polarized electromagnetic relay 10 described above, the coil assembly having electromagnet 26 includes a bobbin 32 which the coil 34 is wound, is supported by and fixed to the bobbin 32, conductors forming the coil 34 are connected to each Three coil terminals 90 are provided (FIG. 6). And by making the coil 34 constitute two excitation circuits each including a terminal pair consisting of any two coil terminals 90 of the three coil terminals 90, the polarized electromagnetic relay 10 is in an operating state (ie, It is possible to quickly switch between a make contact closed state) and a return state (that is, a break contact closed state), and in any state, the contact portion 16 can be stably held in the contact closed state. Yes.

The coil assembly 110 shown in FIGS. 11 to 14 has the same basic configuration as the coil assembly of the electromagnet 26 described above, and the operation of automatically connecting the coil conductors to each of the three coil terminals, The following characteristic configuration is provided to enable safe and accurate implementation. The coil assembly 110, in place of the coil assembly (Fig. 6) included in the electromagnet 26 of the polarized electromagnetic relay 10 described above, which can be incorporated into the electromagnet 26, whereby the perforated by other related art A pole electromagnetic relay (not shown) is provided.

  The coil assembly 110 includes a coil 112 having a central axis 112a, a winding frame 114 around which the coil 112 is wound, and three lead wires 116 that are fixedly supported by the winding frame 114 and are connected to the winding wire 114. Coil terminals 118, 120, and 122 are provided (FIG. 11). As with the above-described winding frame 32, the winding frame 114 includes a hollow cylindrical body portion 124, first and second flange portions 126 and 128 having annular flat plate shapes provided at both longitudinal ends of the body portion 124, An extension portion 130 extending outward from the first collar portion 126 is provided (FIG. 12). The coil 112 is formed by tightly winding a required length portion of the conducting wire 116 around the body portion 124 of the winding frame 114, and is fixedly held between both flange portions 126 and 128 of the winding frame 114.

  The coil 112 constitutes two excitation circuits each including a terminal pair composed of any two of the three coil terminals 118, 120, and 122. In the illustrated embodiment, three coil terminals 118, 120, 122 are arranged on the extended portion 130 of the winding frame 114 in a direction orthogonal to the coil center axis 112 a and arranged at substantially equal intervals. A coil power source 132 is switchably connected to the first and second coil terminals 118 and 120 at both ends in the alignment direction and the third coil terminal 122 at the center in the alignment direction as shown in the figure. The three coil terminals 118 and 122 constitute a terminal pair of one excitation circuit 134a, and the second and third coil terminals 120 and 122 constitute a terminal pair of another one excitation circuit 134b ( FIG. 11 (a)). Each of the excitation circuits 134a and 134b is a circuit for exciting the electromagnet having the coil assembly 110 in the make contact closing direction and the break contact closing direction. In the configuration shown in FIG. The excitation circuits 134a and 134b are also wound around the reel body 124 in the same direction W.

  Each of the three coil terminals 118, 120, 122 includes a binding portion 118a, 120a, 122a to which the conducting wire 116 is connected, and a terminal portion 118b, 120b, 122b spaced from the binding portion 118a, 120a, 122a. And the binding portions 118a, 120a, and 122a and the terminal portions 118b, 120b, and 122b are arranged to protrude outward from the reel 114 (FIGS. 13 and 14). In addition, the winding frame 114 is a binding portion (the binding portion 118a, in the drawing) of one coil terminal (first and second coil terminals 118, 120 in the drawing) in each pair of terminals of the two excitation circuits 134a, 134b. 120a) from which the first surface protrudes (in the figure, the first surface 130a of the extended portion 130) and the opposite side of the first surface, and the terminal portion of the one coil terminal (in the figure, the terminal portions 118b and 120b). ) Projecting side (in the figure, the second surface 130b of the extended portion 130).

  More specifically, in the illustrated embodiment, the first and second coil terminals 118 and 120 are at one end protruding in a direction substantially perpendicular to the coil center axis 112 a from the first surface 130 a of the extension portion 130 of the winding frame 114. The binding portions 118a and 120a and the other end portions 118b and 120b projecting from the second surface 130b of the extension portion 130 in a direction substantially orthogonal to the coil center axis 112a are respectively provided. And the terminal portions 118b and 120b are arranged in parallel to each other and installed on the extension portion 130. On the other hand, the third coil terminal 122 includes an end portion 122a protruding from the extension portion 130 of the winding frame 114 in a direction substantially parallel to the coil center axis 112a, and a coil center axis 112a from the second surface 130b of the extension portion 130. Terminal portion 122b at the other end projecting in a direction substantially orthogonal to the terminal portion 122b. The terminal portion 122b is disposed in parallel with the terminal portions 118b and 120b of the first and second coil terminals 118 and 120 and installed in the extension portion 130. Is done. With such a terminal configuration, an automatic winding operation described later using an existing winding machine can be smoothly performed.

  The conducting wire 116 of the coil 112 is a binding portion (the binding portion in the figure) of one coil terminal (the first and second coil terminals 118 and 120 in the figure) constituting each terminal pair of the two excitation circuits 134a and 134b. 118a, 120a) and a coil 112 and a pair of predetermined length portions (referred to as first lead portions in this application) 116a and the other coil terminal constituting the terminal pair (third coil terminal 122 in the figure). And a pair of predetermined length portions (referred to as second lead portions in the present application) 116b extending between the coil 112 and the coil 112. In the coil assembly 110, the conductive wire 116 of the coil 112 is the first surface of the winding frame 114 on the side close to the central axis 112a of the coil 112 at both first lead portions 116a (the first surface of the extension portion 130 in the figure). 130a), and along the second surface of the reel 114 on the side remote from the coil center axis 112a (in the figure, the second surface 130b of the extended portion 130) at both the second lead portions 116b. (FIGS. 13 and 14).

In the coil assembly 110 having the above structure, and a second lead portion 116b and a pair of first lead portion 116a of the wire 116 of the pair extending between the individual coil terminals 118, 120, 122 and the coil 11 2, cross each other Since it is laid along the first and second surfaces 130a and 130b of the extension portion 130 of the winding frame 114 without touching or contacting, for example, the first and second lead portions caused by friction between the conducting wires, for example. It is possible to prevent the occurrence of rare shorts due to disconnection of 116a and 116b or deterioration of the insulating film. Therefore, according to the coil assembly 110, the automatic winding operation of connecting the conductive wire 116 to each of the three coil terminals 118, 120, 122 to form the coil 112 on the winding frame 114 is performed safely and accurately. be able to. In addition, a polarized electromagnetic relay (for example, the polarized electromagnetic relay 10) having an electromagnet (for example, the electromagnet 26, 96, 100) incorporating the coil assembly 110 can perform such automatic winding work safely and accurately. It will be excellent in reliability.

  In the illustrated embodiment, the extension portion 130 of the winding frame 114 is adjacent to the protruding portions of the binding portions 118a and 120a of the first and second coil terminals 118 and 120, respectively, and is separated from the first surface 130a. A pair of guide grooves 136 is provided, and a pair of guide grooves 138 spaced apart from each other are formed on the second surface 130b adjacent to the protruding portions of the terminal portions 118b and 120b of the first and second coil terminals 118 and 120, respectively. Provided (FIGS. 13 and 14). These guide grooves 136, 138 receive the first and second lead portions 116a, 116b of the conductive wire 116 and hold them in a proper laying configuration without crossing or contacting each other. The accuracy and reliability of the automatic winding work can be improved.

  On the other hand, when the accuracy and reliability of the automatic winding work can be sufficiently ensured, the above-described guide grooves 136 and 138 of the winding frame 114 can be omitted. FIGS. 15 to 17 show a coil assembly 110 ′ according to a modification including a winding frame having no guide groove. The coil assembly 110 ′ according to the illustrated modification is substantially the same as the coil assembly 110 described above except that the guide groove for receiving the first and second lead portions 116 a and 116 b of the conducting wire 116 is not provided in the winding frame 114. Since it has a configuration, the corresponding components are denoted by common reference numerals, and individual descriptions are omitted.

  In the coil assemblies 110 and 110 ′ described above, the first to third coil terminals 118, 120, and 122 are arranged at substantially equal intervals in a direction orthogonal to the coil center axis 112 a, and the intermediate third coil terminal 122. However, since the entire coil 112 is formed by one continuous conducting wire 116 and both the conducting wires 116 are connected to the first and second coil terminals 118, 120. The end portions 116c can be connected to each other, and the intermediate portion 116d of the conducting wire 116 can be connected to the third coil terminal 122 (FIG. 11B). Also in this case, the first and third coil terminals 118 and 122 function as a terminal pair of one excitation circuit 134a, and the second and third coil terminals 120 and 122 function as a terminal pair of the other excitation circuit 134b. It functions (FIG. 11 (a)). According to such a configuration, the automatic winding operation of forming the coil 112 with the conductive wire 116 is further accelerated, and the coil assemblies 110 and 110 '(and the polarized electromagnetic relay using the coil assemblies 110 and 110') are manufactured. Cost is reduced. In addition, also in the electromagnets 26, 96, and 100 of the polarized electromagnetic relay 10 shown in FIGS. 1 to 10, the same effect can be ensured by forming the entire coil 34 by one continuous conducting wire.

  Here, in the coil assemblies 110 and 110 ', an example of the automatic winding operation of the conducting wire 116 when the entire coil 112 is formed by one continuous conducting wire 116 will be described with reference to FIGS. To do. As a preparatory work, a device in which three coil terminals 118, 120, 122 are fixed at predetermined positions of the winding frame 114 is prepared, and an automatic winding machine (not shown) is set in a work ready state. Note that the following plurality of work steps are all executed as automatic work by an automatic winding machine unless otherwise noted.

  First, the wire end portion 116 c of the conducting wire 116 is entangled with the entangled portion 118 a of the first coil terminal 118 and temporarily fixed. Next, the first lead portion 116a of the conducting wire 116 adjacent (following) the wire end portion 116c is moved along the first surface 130a (the guide groove 136 (FIG. 13) if present) of the extended portion 130 of the winding frame 114. While laying (arrow W1), a predetermined length portion of the conducting wire 116 adjacent (following) the first lead portion 116a is wound around the body portion 124 of the winding frame 114 (arrow W2). Then, after winding a predetermined length portion of the conductive wire 116 by the number of turns required for one excitation circuit 134a (FIG. 11), the second lead portion 116b of the conductive wire 116 adjacent (following) the predetermined length portion is A conductor 116 is laid along the second surface 130b (the guide groove 138 (FIG. 13), if present) of the extension portion 130 of the reel 114 (arrow W3), and is adjacent (following) the second lead portion 116b. The intermediate portion 116d of the third coil terminal 122 is entangled with the entangled portion 122a of the third coil terminal 122 and temporarily fixed. Thereby, the coil part which comprises one excitation circuit 134a is formed on the trunk | drum 124 of the winding frame 114, and is temporarily hold | maintained.

  Next, another second lead portion 116b of the conducting wire 116 adjacent (following) the intermediate portion 116d is moved in the direction toward the second coil terminal 120, and the second surface 130b (existing) of the extension portion 130 of the winding frame 114 exists. In this case, while laying along the guide groove 138 (FIG. 13) (arrow W4), another predetermined length portion of the conducting wire 116 adjacent (following) to the second lead portion 116b is connected to the body of the winding frame 114. The coil is further wound on the coil portion temporarily held on the portion 124 (arrow W2). Then, after winding a predetermined length portion of the conducting wire 116 by the number of turns required for the other exciting circuit 134b (FIG. 11), another first of the conducting wires 116 adjacent (following) the predetermined length portion. The lead portion 116a is laid (arrow W5) along the first surface 130a (the guide groove 136 (FIG. 13) if present) of the extension portion 130 of the reel 114, and further adjacent to the first lead portion 116a. Another wire end portion 116c of the (following) conducting wire 116 is entangled with the entangled portion 120a of the second coil terminal 120 and temporarily fixed. Thereby, the coil part which comprises the other one excitation circuit 134b is formed on the trunk | drum 124 of the winding frame 114, and is temporarily hold | maintained. Finally, the two wire end portions 116c and the intermediate portion 116d of the conductive wire 116 temporarily fixed to the binding portions 118a, 120a, 122a of the first to third coil terminals 118, 120, 122 are permanently fixed by welding or the like. Automatic winding work is completed.

  In the illustrated embodiment, the pair of second lead portions 116 b of the conducting wire 116 are viewed in the opposite directions toward the first and second coil terminals 118 and 120 when viewed from the binding portion 122 a of the third coil terminal 122. It extends. However, the configuration is not limited to such a configuration, and the pair of second lead portions 116b may be laid so as to extend in directions approximate to each other between the coil 112 and the binding portion 122a of the third coil terminal 122. Yes (especially when the guide groove 138 is not provided). However, also in this case, it is important from the viewpoint of preventing damage to the second lead portion 116b to lay the pair of second lead portions 116b so as not to contact each other.

  In the coil assemblies 110 and 110 ′, instead of forming the entire coil 112 by one continuous conductive wire 116, different conductive wires are used for the two excitation circuits 134a and 134b (FIG. 11), respectively. The coil 112 can also be formed. According to such a configuration, although there is a slight disadvantage from the viewpoint of manufacturing cost, for example, in the above-described automatic winding operation, for the excitation circuit 134a disposed radially inward on the body portion 124 of the winding frame 114 The coil portions for the exciting circuit 134b arranged on the outer side in the same radial direction are formed by conducting wires having different wire diameters, so that there is an advantage that the winding efficiency of both coil portions can be equalized. By making the winding efficiencies of the two excitation circuits 134a and 134b for exciting the electromagnet in the make contact closing direction and the break contact closing direction uniform, the make contact closing operation and the break contact closing operation in the contact portion are performed. Responsiveness and speed can be equalized.

  18 and 19 show a configuration in which the entire coil 112 is formed by one continuous conducting wire 116, and the winding efficiency of the coil portions for the two excitation circuits 134a and 134b can be equalized. FIG. 6 shows a coil assembly 140 according to another embodiment of the present invention. Since the coil assembly 140 according to the illustrated embodiment has substantially the same configuration as the coil assembly 110 described above except for the configuration of the winding frame 114 that supports the coil 112, the corresponding components are denoted by the same reference numerals. Thus, individual explanations are omitted.

  The winding frame 114 of the coil assembly 140 further includes an annular flat plate-shaped intermediate collar 142 that extends radially outward at the axial center of the trunk portion 124. The intermediate collar 142 is arranged in parallel to the first and second collars 126 and 128, and thereby the first region that supports the conductive wire 116 constituting one excitation circuit 134a (FIG. 11) on the reel 114. 114A and a second region 114B that supports the conducting wire 116 constituting another exciting circuit 134b (FIG. 11) are defined adjacent to each other in the direction along the central axis 112a of the coil 112.

  In the coil assembly 140 having the above-described configuration, the coil portion 112A for one excitation circuit 134a and the coil portion 112B for the other excitation circuit 134b are placed on the trunk portion 124 of the winding frame 114 by the intermediate flange 142. Each of the first region 114A and the second region 114B divided in the axial direction can be formed to have the same inner and outer diameter dimensions. Therefore, according to the coil assembly 140, even when the entire coil 112 is formed by one continuous conducting wire 116, the winding efficiencies of both the coil portions 112A and 112B can be easily equalized. In addition, in order to improve the precision and reliability of the automatic winding operation of the conducting wire 116 by the winding machine, the first and second lead portions 116a and 116b of the conducting wire 116 adjacent to the coil portion 112B are provided on the intermediate collar 142. A pair of receivable guide grooves 144 may be provided. Moreover, in FIG.18 and FIG.19, the installation procedure of the conducting wire 116 by automatic winding work is shown by the arrows W1-W5 described in FIGS.

In the coil assemblies 110, 110 ′, 140 having the above-described configuration, the binding portion 122 a of the third coil terminal 122 disposed in the center of the three coil terminals 118, 120, 122 is preliminarily provided as the extension portion 130 of the winding frame 114. 10 to protrude in a direction substantially parallel to the coil central axis 112a. For example , as an embodiment of the present invention, the electromagnet 26 shown in FIGS. , 96, 100, the shaft portion 46 of the iron core 36 is easily inserted into the body portion 124 from the first flange portion 126 side of the winding frame 114, as illustrated by the coil assembly 110 in FIG. (FIG. 20A). Thereafter, the binding portion 122a of the third coil terminal 122 is bent on the extension portion 130 of the winding frame 114 to a position substantially parallel to the binding portions 118a and 120a of the first and second coil terminals 118 and 120. The case 82 (FIG. 1) can be accommodated (FIG. 20B).

  As mentioned above, although preferred embodiment of the coil assembly which concerns on this invention was described, this invention is not limited to the said embodiment, Various other corrections are possible. For example, the coil assembly according to the present invention is not limited to a configuration including three coil terminals, and has two sets of terminal pairs that are independent of each other in two excitation circuits (that is, a total of four coil terminals). Applicable to configuration. In addition, the coil assembly according to the present invention is not limited to the polarized electromagnetic relay 10 in which the characteristic armature 28 shown in FIGS. 1 to 10 is incorporated in the electromagnet device 14, but has an electromagnet device having another general configuration. It can also be used with a pole electromagnetic relay. By including these configurations, the present invention can be expressed as follows.

  That is, the present invention includes a coil having a central axis, a winding frame around which the coil is wound, and three or more coil terminals that are fixedly supported by the winding frame and connected to the conductive wires forming the coil, respectively. In a coil assembly for a polarized electromagnetic relay, in which a coil constitutes two excitation circuits each including a terminal pair consisting of any two coil terminals among three or more coil terminals, the conductor is the terminal pair A first lead portion extending between one coil terminal and the coil, and is laid along one surface of the winding frame on the side close to the central axis of the coil, and between the other coil terminal and the coil of the terminal pair The coil assembly is characterized in that the second lead portion extending therebetween is laid along the other surface of the reel on the side remote from the central axis.

  The present invention also includes a base, an electromagnet device assembled to the base, a contact portion insulated from the electromagnet device and assembled to the base, and disposed between the electromagnet device and the contact portion, and moved by the action of the electromagnet device. A polarized electromagnetic relay comprising a force transmission member that opens and closes a contact portion, and the electromagnet device includes an electromagnet, an armature driven by the electromagnet, and a permanent magnet carried by the armature The electromagnet includes a coil having a central axis, a winding frame around which the coil is wound, and three or more coil terminals that are fixedly supported by the winding frame and to which the conductive wires that form the coil are respectively connected. The coil constitutes two excitation circuits each including a terminal pair composed of any two of the three or more coil terminals, and the conductive wire is connected to one coil terminal and the coil of the terminal pair. A first lead portion extending between the first lead portion and the second lead portion extending along one surface of the winding frame on the side close to the central axis of the coil and extending between the other coil terminal of the terminal pair and the coil The poled electromagnetic relay is characterized by being laid along the other surface of the reel on the side remote from the central axis.

DESCRIPTION OF SYMBOLS 10 Polarized electromagnetic relay 12 Base 14 Electromagnet apparatus 16 Contact part 18 Force transmission member 24 Cylindrical wall 26, 96, 100 Electromagnet 28 Armature 30 Permanent magnet 32 Winding frame 34 Coil 34a Center axis 34b 1st outer periphery area 34c 2nd Outer peripheral region 36 Iron core 38 yoke 40 trunk portion 46 shaft portion 48 head portion 48a outer edge region 52 main portion 52a end region 54 first conductive plate element 56 second conductive plate element 54a, 56a part 72 attaching point 82 case 86 Bottom wall 86a Raised portion 86c Recess 88 Extended portion 90 Coil terminal 98 Annular portion 102 Sub portion 102a End region 104 Fracture surface 110, 110 ', 140 Coil assembly 112 Coil 112a Center axis 114 Winding frame 114A First region 114B Second region 116 Conductor 116a First lead portion 116b First Lead portion 116c Wire end portion 116d Intermediate portion 118 First coil terminal 118a Tying portion 118b Terminal portion 120 Second coil terminal 120a Tying portion 120b Terminal portion 122 Third coil terminal 122a Tying portion 122b Terminal portion 130 Extension portion 130a First portion 1 surface 130b 2nd surface 134a, 134b Excitation circuit 142 Intermediate collar

Claims (3)

An electromagnet manufacturing method comprising a winding frame for holding a coil and three coil terminals fixed to the winding frame,
A first coil terminal, a second coil terminal, and a third coil terminal are provided at an extension of one end in the longitudinal direction of a winding frame having a hollow body, and a first axis orthogonal to a central axis of a coil formed on the body. A second portion of the first coil terminal and the second coil terminal at both ends of the alignment direction perpendicular to both the central axis and the first direction so as to be aligned in the direction. And the tangled portion of the third coil terminal in the center of the alignment direction is installed so as to protrude from the extended portion in a third direction parallel to the central axis,
A conductive wire is wound around the binding portion of each of the first coil terminal and the third coil terminal, and is wound around the body portion between the first coil terminal and the third coil terminal, Forming a first coil part constituting an excitation circuit;
A conductive wire is wound around the binding portion of each of the second coil terminal and the third coil terminal, and is wound around the trunk portion between the second coil terminal and the third coil terminal. Forming a second coil part constituting an excitation circuit;
Insert an iron core into the trunk from the side of the extension,
Bend the entangled portion of the third coil terminal entangled with the conducting wire to a position parallel to the entangled portion of the first and second coil terminals;
Manufacturing method . The manufacturing method according to claim 1, wherein the first coil portion and the second coil portion are formed by a single continuous wire . The manufacturing method according to claim 1 , wherein the first coil portion is formed by one of the conducting wires, and the second coil portion is formed by another one of the conducting wires .

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