JPWO2008129644A1 - Coil and coil manufacturing method - Google Patents

Abstract

The coil 1 includes a conducting wire 3, a bobbin 2 around which the conducting wire 3 is wound, and leads 6 and 7 wires having conductive portions 6 a and 7 a to which end portions 3 a and 3 b of the conducting wire 3 are connected on the distal end side. Yes. The bobbin 2 is formed with a flange portion 2d formed at an end portion in the axial direction of the bobbin 2, and lead wire storage holes 2f and 2g in which the conductive portions 6a and 7a side of the lead wires 6 and 7 are stored. And a lead wire storage portion 2e integrally formed on the outer peripheral surface of 2d. The lead wire housing holes 2f and 2g are formed in a direction toward the axial direction.

Description

  The present invention relates to a coil and a method for manufacturing the coil.

  Conventionally, a coil formed by winding a conducting wire around an insulating bobbin is known. As a method for manufacturing this type of coil, a method for manufacturing a coil capable of simplifying the manufacturing process has been proposed by the present inventor (see, for example, Patent Documents 1 and 2).

  In the method for manufacturing a coil described in Patent Document 1, first, the leading end portion of a conducting wire is wound around a pin protruding from a collar portion formed on a bobbin. Thereafter, the conducting wire is wound around the body portion of the bobbin, and when the winding to the body portion is completed, the rear end portion of the conducting wire is wound around another pin protruding from the collar portion. When the winding of the conducting wire is finished, the lead wire is fixed to the outer peripheral side of the conducting wire with a tape. After that, remove the tip and rear end of the lead from the flange pin (ie, the end of the lead), insert the end of this lead into the lead end where the insulation coating has been removed, and solder To do.

  In the coil manufacturing method described in Patent Document 2, first, a resin fixing member formed separately from a bobbin is fixed to a predetermined fixing jig together with the bobbin. In addition, the tip portions of the two lead wires from which the insulating coating has been removed and pre-soldered are respectively inserted into the two through holes formed in the fixing member. And the insertion part to the through-hole of a lead wire is fixed to a fixing member by heating and pressurizing the formation location of a through-hole. Moreover, the front-end | tip part of conducting wire is wound around the front-end | tip part which protrudes from a fixing member of one lead wire. Thereafter, the conductor is wound around the body of the bobbin while rotating the bobbin and the fixing member fixed to the fixing jig. When the winding of the body portion is completed, the rear end portion of the conducting wire is wound around the tip portion of the other lead wire protruding from the fixing member. Thereafter, the end portion of the conductive wire and the lead wire are soldered, and a fixing member is fixed to the outer peripheral side of the conductive wire that has been wound with a tape.

  Patent Document 2 also discloses a method for manufacturing a coil using a bar material inserted through two through holes formed in a fixing member. In this manufacturing method, first, a bar is inserted into each of the two through holes, and the leading end of the conducting wire is wound around one of the bars. Thereafter, while rotating the bobbin and the fixing member, the conducting wire is wound around the body portion of the bobbin, and then, the rear end portion of the conducting wire is wound around the other rod member. Thereafter, the bar is removed from the through hole, and the tip of the lead wire is inserted into the through hole. When the lead wire is inserted into the through hole, the end portion of the lead wire is inserted into the tip portion of the lead wire, and in this state, the tip portion of the lead wire and the end portion of the lead wire are soldered.

  Furthermore, Patent Document 2 also discloses a coil manufacturing method using a fixing member formed integrally with a bobbin collar. In this case, the fixing member is formed so as to rise from the flange portion of the bobbin toward the radially outer side of the bobbin. The through hole is formed in the substantially radial direction of the bobbin, and the lead wire is inserted into the through hole toward the outer side in the substantially radial direction of the bobbin. In addition, in order to reduce the size of the coil in the radial direction of the bobbin, when the winding of the conducting wire is finished and the soldering between the end portion of the conducting wire and the lead wire is finished, the fixing member is bent and taped to the outer peripheral side of the conducting wire Secure with.

Japanese Patent Publication No. 6-80619 JP-A-8-97031

  However, in the coil manufacturing method described in Patent Document 1, since the lead wire is fixed to the outer peripheral side of the conducting wire with tape, the operation of positioning and fixing the lead wire at a predetermined position becomes complicated. Further, in the coil manufacturing method described in Patent Document 2, the fixing member is fixed to the outer peripheral side of the conducting wire with a tape, so that the operation of positioning and fixing the fixing member at a predetermined position becomes complicated. Therefore, it is difficult to simplify the coil manufacturing process.

  Here, as described in Patent Document 2, when a fixing member formed integrally with the bobbin collar is used, the operation of positioning and fixing the fixing member at a predetermined position becomes relatively easy. However, since the fixing member needs to be bent, it is difficult to simplify the coil manufacturing process.

  Then, the subject of this invention is providing the coil provided with the structure which can simplify a manufacturing process. Moreover, the subject of this invention is providing the manufacturing method of the coil which can simplify a manufacturing process.

  In order to solve the above-described problem, the coil of the present invention includes a conducting wire, a bobbin around which the conducting wire is wound, and a lead wire having a conducting portion to which an end of the conducting wire is connected on the distal end side. A flange portion formed at the axial end portion of the bobbin, and a lead wire storage portion formed integrally with the outer peripheral surface of the flange portion while forming a lead wire storage hole for storing the conductive portion side of the lead wire. The lead wire receiving hole is formed in a direction perpendicular to the axial direction from the axial center of the bobbin toward the outer peripheral surface, or in the axial direction.

  In the coil of the present invention, the lead wire conducting portion side is housed in the lead wire housing hole of the lead wire housing portion formed integrally with the outer peripheral surface of the bobbin collar. Therefore, it is possible to easily position and fix the conductive portion side of the lead wire with respect to the bobbin in the lead wire storage portion. As a result, the coil manufacturing process can be simplified.

  Moreover, in the coil of this invention, the lead wire accommodation hole is formed toward the direction orthogonal to an axial direction from the axial center of a bobbin toward an outer peripheral surface, and an axial direction, or an axial direction. That is, the lead wire is inserted into the lead wire housing hole in a direction orthogonal to the direction from the axial center of the bobbin toward the outer peripheral surface and the axial direction, or in the axial direction. Therefore, it is possible to reduce the size of the lead wire storage portion in the direction from the center of the bobbin toward the outer peripheral surface. Therefore, it is possible to reduce the size of the coil in the direction from the center of the bobbin toward the outer peripheral surface without performing the bending operation described in Patent Document 2. That is, in the present invention, it is possible to eliminate the bending work, and as a result, it is possible to simplify the coil manufacturing process.

  In the present invention, it is preferable that a jig mounting portion to which a temporary fixing jig for temporarily fixing the end portion of the conductive wire before being connected to the conducting portion is attached to the lead wire storage portion or the flange portion. . If comprised in this way, the flexible response | compatibility according to a user's needs will be attained with a short delivery time. That is, the winding of the conductive wire around the bobbin is completed, and the one in which the leading end portion and the rear end portion of the conductive wire are temporarily fixed to the temporary fixing jig attached to the jig attaching portion is stored as an inventory. In accordance with an order from the user, a lead wire that meets the needs of the user can be selected and the subsequent steps can be performed. As a result, after the order from the user, only the steps after the attachment of the lead wire have to be performed, so that it is possible to respond flexibly to the user's needs with a short delivery time.

  In the present invention, the jig mounting part includes a jig mounting groove formed in the lead wire storage part, and a part of the lead wire is arranged in the jig mounting groove to route the lead wire. Is preferred. If comprised in this way, since a lead wire can be drawn around using a jig | tool attachment groove | channel, the structure of a coil can be simplified.

  In this invention, it is preferable that the soldering part formed by soldering the conduction | electrical_connection part and the edge part of conducting wire is accommodated in the lead wire accommodation hole. If comprised in this way, a soldering part can be arrange | positioned inside the lead wire accommodating part integrally formed in the insulating bobbin. Therefore, insulation between the soldered portion and the conductive wire can be reliably performed. That is, it is possible to prevent a short circuit between the soldered portion and the conductive wire.

  In the present invention, the lead wire housing hole is formed so as to penetrate the lead wire housing portion in the axial direction, and is formed so that the lead wire can be inserted into the lead wire housing hole in both axial directions. It is preferable. If comprised in this way, it will become possible to pull out a lead wire to both directions of the direction which goes to a bobbin, and the direction away from a bobbin. Therefore, the lead wire pull-out direction can be set according to the user's needs, and a flexible response becomes possible.

  Moreover, in order to solve said subject, this invention is a manufacturing method of a coil provided with a conducting wire, the bobbin around which a conducting wire is wound, and the lead wire which has the conduction | electrical_connection part to which the edge part of a conducting wire is connected to the front end side. , A temporary fixing jig attached to the bobbin or a temporary fixing step for temporarily fixing the bobbin to the bobbin, a winding step for winding the conductive wire around the bobbin, and a temporary fixing treatment for the rear end of the conductive wire A rear end temporary fixing step of temporarily fixing to a tool or a bobbin, a direction from the axial center of the bobbin toward the outer peripheral surface and an axial direction in a lead wire housing portion formed integrally with the outer peripheral surface of the flange formed on the bobbin; A lead wire insertion step for inserting a lead wire into a lead wire accommodation hole in which a lead wire conducting portion side is accommodated, and a temporary fixing jig or The end of the lead wire temporarily fixed to the bobbin Characterized in that it comprises a soldering process in which the lead end attachment step of attaching a conductive portion which is inserted into the lead wire accommodating hole, and an end portion of the conductive portion and the conductive wire is soldered.

  In the coil manufacturing method of the present invention, the lead wire conducting portion side is housed in the lead wire housing hole of the lead wire housing portion formed integrally with the outer peripheral surface of the bobbin collar in the lead wire insertion step. Therefore, it is possible to easily position and fix the conductive portion side of the lead wire with respect to the bobbin in the lead wire storage portion. Further, in the lead wire insertion step, the lead wire is inserted into a lead wire receiving hole formed in a direction orthogonal to the direction from the axial center of the bobbin toward the outer peripheral surface and the axial direction or in the axial direction. Therefore, it is possible to reduce the size of the coil in the direction from the center of the bobbin toward the outer peripheral surface without performing the bending operation described in Patent Document 2. That is, according to the present invention, it is possible to eliminate the bending work. As a result, the coil manufacturing process can be simplified.

  Further, in the coil manufacturing method of the present invention, the tip end portion of the conducting wire is temporarily fixed to the temporarily fixing jig or the bobbin attached to the bobbin in the tip end temporary fixing step, and the lead end portion is temporarily fixed in the rear end portion temporary fixing step. The end is temporarily fixed to a temporary fixing jig or bobbin. Therefore, it is possible to respond flexibly to the user's needs with a short delivery time. That is, after the rear end temporary fixing process is stored as stock, and then the lead wire according to the user's needs is selected according to the order from the user, and the process after the lead wire insertion process is performed. Can do. As a result, after the order from the user, the process after the lead wire insertion process may be performed, so that a flexible response according to the user's needs is possible with a short delivery time.

  The coil manufacturing method of the present invention preferably includes a storage step of storing the soldered portion formed in the soldering step in the lead wire storage hole. If comprised in this way, a soldering part can be arrange | positioned inside the lead wire accommodating part integrally formed in the insulating bobbin, and the insulation between a soldering part and a conducting wire can be performed reliably. .

  In the coil manufacturing method of the present invention, the end of the lead wire is temporarily fixed to the temporary fixing jig in the leading end temporary fixing step and the rear end temporary fixing step, and the temporary fixing jig is fixed to the lead wire storage portion. And a winding pin that is configured to be rotatable with respect to the fixed portion with the direction orthogonal to the axial direction as the direction of the rotation axis and the end of the conducting wire is wound and temporarily fixed, In the lead wire end attaching step, it is preferable to remove the end portion of the lead wire wound around the winding pin while rotating the winding pin and attach it to the conduction portion. If comprised in this way, removal of the edge part of the conducting wire temporarily fixed will become easy. That is, it is possible to simplify the work in the conductor end portion attaching step.

  As described above, in the coil and the coil manufacturing method of the present invention, the manufacturing process can be simplified.

It is a side view of the coil concerning Embodiment 1 of this invention. It is a top view of the coil shown in FIG. It is a figure which shows a bobbin from the EE direction of FIG. It is a figure for demonstrating the FF cross section of FIG. It is a flowchart which shows the manufacturing process of the coil shown in FIG. It is a perspective view for demonstrating the temporary fixing jig | tool attached to a bobbin at the jig | tool attachment process shown in FIG. It is a fragmentary top view which shows the state after the front-end | tip part temporary fixing process shown in FIG. It is a figure which shows the state after the lead wire insertion process shown in FIG. It is a figure which shows the state before the soldering process shown in FIG. It is a side view of the coil concerning Embodiment 2 of this invention. It is a top view of the coil shown in FIG. It is a figure which shows a bobbin from the GG direction of FIG. It is a figure for demonstrating the HH cross section of FIG. It is a figure for demonstrating a part of manufacturing process of the coil shown in FIG. It is an enlarged view which expands and shows the side surface of the lead wire accommodating part of the coil concerning other embodiment of this invention. It is a perspective view which shows the lead wire accommodating part concerning other embodiment of this invention.

Explanation of symbols

1,21 Coil 2,22 Bobbin 2d 2nd collar (buttock)
2e, 22e, 32e Lead wire storage portion 2f, 2g, 22f, 22g, 32f, 32g Lead wire storage hole 2k, 22k Jig mounting portion 2n, 22n Jig mounting groove 3 Lead wire 3a Tip (end portion)
3b Rear end (end)
6, 7 Lead wire 6a, 7a Conducting portion 12, 13 Soldering portion 16 Temporary fixing jig 17 Fixed portion 18 Winding pin S3 Tip portion temporary fixing step S4 Winding step S5 Rear end portion temporary fixing step S9 Lead wire insertion step S10 Conductor end mounting process S11 Soldering process S12 Storage process

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[Embodiment 1]
(Coil configuration)
FIG. 1 is a side view of a coil 1 according to a first embodiment of the present invention. FIG. 2 is a plan view of the coil 1 shown in FIG. FIG. 3 is a view showing the bobbin 2 from the EE direction of FIG. FIG. 4 is a view for explaining the FF cross section of FIG. 1. In the following description, the left in FIG. 1 is “left”, the right in FIG. 1 is “right”, the top in FIG. 1 is “up”, the bottom in FIG. 1 is “down”, and the front in FIG. The front side of FIG. 1 is defined as “rear (back)”.

  The coil 1 of Embodiment 1 is a coil with a bobbin formed by winding a conducting wire 3 around a bobbin 2 formed of an insulating resin material, as shown in FIGS. And used as a driving coil for a stepping motor or the like. In addition to the bobbin 2 and the conducting wire 3, the coil 1 is connected to a lead wire 6 to which the leading end portion 3 a of the conducting wire 3 is connected and a rear end portion 3 b of the conducting wire 3 as shown in FIGS. 1 to 4. A lead wire 7, a frame 8 for forming a magnetic circuit of the coil 1, and an exterior tape 10 covering the outer peripheral side of the conducting wire 3 are provided. In FIG. 1, the illustration of the frame 8 is omitted.

  The conducting wire 3 is a covered wire formed by covering a conductive wire such as copper with an insulating film. The conducting wire 3 is wound around a body portion 2 b described later that constitutes the bobbin 2. Moreover, the front-end | tip part 3a of the conducting wire 3 connected to the lead wire 6, and the rear-end part 3b of the conducting wire 3 connected to the lead wire 7 are pulled out from the right end side of the trunk | drum 2b. Hereinafter, when the front end portion 3a and the rear end portion 3b are collectively expressed, they are expressed as “end portions 3a, 3b”.

  The lead wires 6 and 7 are covered with an insulating film except for the tip side. The portions of the lead wires 6 and 7 from which the insulating coating on the tip side has been removed are conductive portions 6a and 7a where the core wires are exposed. As shown in FIG. 4, the leading end 3a is directly wound around the conducting portion 6a. The conducting portion 6 a and the tip portion 3 a are soldered, and the soldering portion 12 is formed at the tip portion of the lead wire 6. Further, the rear end 3b is directly wound around the conduction portion 7a. The conducting portion 7 a and the rear end portion 3 b are soldered, and a soldering portion 13 is formed at the leading end portion of the lead wire 7.

  As shown in FIG. 3 or the like, the bobbin 2 is a flanged cylindrical member in which a through hole 2a is formed. The bobbin 2 includes a cylindrical body 2b, a disk-shaped first flange 2c formed at one end (left end) in the axial direction of the body 2b, and the other end in the axial direction of the body 2b. A square plate-like second flange portion 2d formed at the portion (right end portion) and a lead wire storage portion 2e in which a part of the lead wires 6 and 7 is stored. That is, the body portion 2b, the first flange portion 2c, the second flange portion 2d, and the lead wire storage portion 2e are integrally formed of an insulating resin material. The shape of the bobbin 2 is not limited to a cylindrical shape, and may be a rectangular tube shape. Moreover, the 1st collar part 2c may be formed in square plate shape, and the 2nd collar part 2d may be formed in disk shape.

  The lead wire storage portion 2e is integrally formed on the outer peripheral surface of the second flange portion 2d. Specifically, a substantially rectangular parallelepiped lead wire storage portion 2e is integrally formed by resin molding at a substantially central portion of the upper side portion of the square plate-like second flange portion 2d. Further, the lead wire storage portion 2e is formed on the upper side portion of the second flange portion 2d so as to slightly protrude from the upper surface of the second flange portion 2d and to protrude to the opposite side (right side) of the body portion 2b. Is formed.

  The lead wire housing portion 2e has a lead wire housing hole 2f for housing the conducting portion 6a side of the lead wire 6, a lead wire housing hole 2g for housing the conducting portion 7a side of the lead wire 7, and a tip portion 3a of the conducting wire 3. A guide groove 2h for routing the side, a guide groove 2j for routing the rear end 3b side of the conductor 3, and an end 3a, 3b of the conductor 3 for temporarily fixing in the manufacturing process of the coil 1 described later. A jig attachment portion 2k to which the temporary fixing jig 16 (see FIG. 6) is attached is formed.

  The lead wire housing holes 2f and 2g are formed in a state where a predetermined interval is provided in the front-rear direction. The lead wire housing holes 2f and 2g are formed so as to penetrate the lead wire housing portion 2e in the left-right direction. In other words, the lead wire housing holes 2 f and 2 g are formed in a straight line so as to penetrate the lead wire housing portion 2 e in the axial direction of the bobbin 2. In this embodiment, as shown in FIG. 4, the lead wire receiving holes 2f and 2g are circular holes having a diameter slightly larger than the diameter of the lead wires 6 and 7 covered with the insulating coating, The lead wires 6 and 7 are formed so as to be inserted in both directions.

  The lead wire receiving holes 2f and 2g may be formed so that the lead wires 6 and 7 can be inserted only in one direction of the left direction or the right direction. In this case, for example, a stepped portion with which the end portion of the insulating coating comes into contact may be formed in the lead wire receiving holes 2f and 2g.

  In this embodiment, as shown in FIG. 2 and the like, the leading ends of the lead wires 6 and 7 are inserted into the lead wire receiving holes 2f and 2g in the right direction. That is, the lead wires 6 and 7 are inserted into the lead wire receiving holes 2f and 2g so that the conducting portions 6a and 7a are disposed on the right end surface side of the lead wire storing portion 2e. Note that the leading ends of the lead wires 6 and 7 may be inserted into the lead wire receiving holes 2f and 2g in the left direction. That is, the lead wires 6 and 7 may be inserted into the lead wire housing holes 2f and 2g so that the conducting portions 6a and 7a are disposed on the left end surface side of the lead wire housing portion 2e.

  Moreover, as shown in FIG. 4, the soldering parts 12 and 13 are arrange | positioned inside the lead wire accommodation holes 2f and 2g. Specifically, the soldering portions 12 and 13 are disposed inside the lead wire receiving holes 2f and 2g so that the tips of the lead wires 6 and 7 do not protrude from the right end surface of the lead wire receiving portion 2e.

  As shown in FIG. 3, the guide grooves 2h and 2j are formed so as to be recessed from the upper surface of the lead wire storage portion 2e. The guide grooves 2h and 2j are formed with a predetermined interval in the front-rear direction. Specifically, it is formed outside the lead wire receiving holes 2f, 2g in the front-rear direction. The guide grooves 2h and 2j are formed on the upper surface side of the lead wire storage portion 2e over the entire region in the left-right direction.

  A guide groove 2m for routing the tip 3a of the conducting wire 3 is formed on the left side surface of the second flange 2d. Specifically, as shown in FIG. 3 and the like, the guide groove 2m is formed so as to be recessed from the side surface of the body portion 2b upward and from the left side surface of the second flange portion 2d. The guide groove 2m is formed so as to be continuous with the guide groove 2h.

  The jig attachment portion 2k includes a jig attachment groove 2n formed so as to be recessed from the upper surface of the lead wire storage portion 2e, and two jig attachment pieces 2p formed so as to protrude above the jig attachment groove 2n. It consists of and.

  The jig mounting groove 2n is formed between the lead wire receiving holes 2f and 2g in the front-rear direction. Specifically, a jig mounting groove 2n is formed at a substantially central position in the front-rear direction of the lead wire storage portion 2e. The jig mounting groove 2n is formed on the upper surface side of the lead wire storage portion 2e over the entire region in the left-right direction. Furthermore, the jig mounting groove 2n is formed slightly above the lead wire accommodation holes 2f and 2g in the vertical direction. A temporary fixing jig 16 described later is inserted into the jig mounting groove 2n when the conductive wire 3 is wound around the bobbin 2 in the manufacturing process of the coil 1.

  Each of the two jig mounting pieces 2p is formed so as to protrude inward in the front-rear direction from the edge of the opening of the jig mounting groove 2n. The jig mounting piece 2p functions to hold the upper surface of the temporary fixing jig 16 inserted into the jig mounting groove 2n.

  As described above, when winding the conducting wire 3 around the bobbin 2 in the manufacturing process of the coil 1, the temporary fixing jig 16 is inserted into the jig mounting groove 2n. In addition, when the coil 1 is completed, as shown in FIG. 2 and the like, a part of the lead wires 6 and 7 is disposed in the jig mounting groove 2n in order to route the lead wires 6 and 7. That is, when the coil 1 is completed, the jig mounting groove 2n is used for routing the lead wires 6 and 7.

  In this embodiment, the lead wires 6 and 7 drawn leftward from the lead wire housing holes 2f and 2g are folded back to the left of the lead wire housing portion 2e. The lead wires 6 and 7 folded back on the left side of the lead wire storage portion 2e are routed (passed through) the jig mounting groove 2n and pulled out to the right. An insulating cloth tape (not shown) is wound around the lead wire storage portion 2e. With this cloth tape, the lead wires 6 and 7 that have passed through the jig mounting groove 2n are securely fixed to the lead wire storage portion 2e.

  When the leading ends of the lead wires 6 and 7 are inserted into the lead wire receiving holes 2f and 2g toward the left, the lead wires 6 and 7 are moved to the right from the lead wire receiving holes 2f and 2g. It is pulled out toward the right side of the lead wire storage portion 2e. In this case, the lead wires 6 and 7 folded back to the right of the lead wire storage portion 2e are drawn in the jig mounting groove 2n and drawn leftward. In this case, the lead wires 6 and 7 drawn leftward from the lead wire storage portion 2e are connected to the outer peripheral surface of the coil 3 (specifically, the surface of the exterior tape 10 by an insulating cloth tape or the like). ).

  As shown in FIG. 2, the frame 8 is a thin plate member made of a magnetic material, and is composed of a first frame 8a formed in a substantially groove shape and a second frame 8b formed in a flat plate shape. ing. The first frame 8a and the second frame 8b are fixed to each other by caulking. Specifically, the second frame 8b is in contact with the left side surface of the first flange portion 2c, and the first frame 8a and the second frame 8b are in contact with the right side surface of the second flange portion 2d. And are fixed to each other. Further, the frame 8 is fixed to the bobbin 2 by fixing the first frame 8 a and the second frame 8 b to each other. With this frame 8, a magnetic circuit is formed between the first flange 2c and the second flange 2d.

  The exterior tape 10 is a thin tape formed of an insulating material (for example, an insulating cloth). The exterior tape 10 is wound so as to cover the entire conductor 3 wound around the body 2b. The exterior tape 10 functions to prevent a short circuit between the lead wire 3 and a member outside the coil 1.

(Coil manufacturing method)
FIG. 5 is a flowchart showing manufacturing steps of the coil 1 shown in FIG. FIG. 6 is a perspective view for explaining the temporary fixing jig 16 attached to the bobbin 2 in the jig attaching step S1 shown in FIG. FIG. 7 is a partial plan view showing a state after the tip end portion temporary fixing step S3 shown in FIG. FIG. 8 is a diagram showing a state after the lead wire insertion step S9 shown in FIG. FIG. 9 is a diagram showing a state before the soldering step S11 shown in FIG. 8 and 9, a cross section corresponding to the cross section of the lead wire storage portion 2e shown in FIG. 4 is shown.

  In the manufacturing process of the coil 1 of this embodiment, the temporary fixing jig 16 is used when the conducting wire 3 is wound around the bobbin 2. As shown in FIG. 6, the temporary fixing jig 16 includes a fixing portion 17 fixed to the lead wire storage portion 2 e, a rotation portion held by the fixing portion 17, and end portions 3 a and 3 b of the conducting wire 3. A winding pin 18 that is wound and temporarily fixed is provided.

  The fixing portion 17 is a flat rectangular parallelepiped member. The fixing portion 17 is formed so that it can be inserted into the jig mounting groove 2n. The winding pin 18 is a rod-shaped member. The winding pin 18 includes a holding portion 18a that is held by the fixing portion 17, a tip winding portion 18b that is formed so as to be bent approximately 90 ° from one end of the holding portion 18a, and that is wound with the tip portion 3a of the conducting wire 3. The rear end winding portion 18c is formed so as to be bent approximately 90 ° from the other end of the holding portion 18a in the same direction as the front end winding portion 18b, and the rear end portion 3b of the conducting wire 3 is wound therearound. The winding pin 18 rotates with respect to the fixed portion 17 with the holding portion 18a as a rotation axis. Specifically, as shown in FIG. 7 and the like, in a state where the fixing portion 17 is inserted into the jig mounting groove 2n, the winding pin 18 is rotated with respect to the fixing portion 17 with the front-rear direction being the direction of the rotation axis. Move.

  Hereinafter, the manufacturing process of the coil 1 will be described.

  As shown in the flowchart of FIG. 5, first, the temporary fixing jig 16 is attached to the lead wire storage portion 2e (jig attachment step S1). Specifically, as shown in FIG. 7, the fixing portion 17 is inserted from the right side into the jig mounting groove 2n so that the winding pin 18 is disposed on the right side of the lead wire storage portion 2e. Further, the winding pin 18 is rotated so that the front end winding portion 18b and the rear end winding portion 18c face upward. After the jig mounting step S1, as shown in FIG. 7, the front end winding portion 18b is arranged on the right side of the guide groove 2h, and the rear end winding portion 18c is arranged on the right side of the guide groove 2j. .

  Thereafter, the bobbin 2 is fixed to a fixing jig of an automatic winding machine (not shown) (bobbin fixing step S2). Specifically, the bobbin 2 is fixed so that the lead wire storage portion 2e is disposed on the upper side. Then, as shown in FIG. 7, the front-end | tip part 3a of the conducting wire 3 is wound around the front-end | tip winding part 18b, and is temporarily fixed (front-end | tip part temporary fixing process S3). The winding of the distal end portion 3a around the distal end winding portion 18b is automatically performed by an automatic winding machine.

  Then, the conducting wire 3 is wound around the trunk | drum 2b of the bobbin 2 (winding process S4). In the winding step S4, the bobbin 2 rotates together with the fixing jig. Moreover, in winding process S4, winding of the conducting wire 3 to the trunk | drum 2b is automatically performed by an automatic winding machine. In addition, when winding the conducting wire 3 around the trunk | drum 2b, the conducting wire 3 is guided from the front end winding part 18b to the trunk | drum 2b using the guide grooves 2h and 2m.

  When the winding of the conducting wire 3 around the trunk portion 2b is completed, the rear end portion 3b of the conducting wire 3 is wound around the rear end winding portion 18c and temporarily fixed (rear end portion temporary fixing step S5). The winding of the rear end portion 3b around the rear end winding portion 18c is also automatically performed by an automatic winding machine. When the rear end portion 3b is wound around the rear end winding portion 18c, the rear end portion 3b is guided from the body portion 2b to the rear end winding portion 18c using the guide groove 2j.

  Thereafter, the bobbin 2 with the temporary fixing jig 16 attached is removed from the fixing jig of the automatic winding machine (bobbin removing step S6). Then, the exterior tape 10 is wound so that the whole outer peripheral surface of the conducting wire 3 wound by the trunk | drum 2b may be covered (exterior tape winding process S7). In this exterior tape winding step S7, the exterior tape 10 is automatically wound around the outer peripheral surface of the conducting wire 3 by an automatic machine.

  Thereafter, the frame 8 is fixed to the bobbin 2 (frame fixing step S8). Specifically, the first frame 8a is fitted into the bobbin 2 from the right side until the first frame 8a comes into contact with the right side surface of the second flange portion 2d, and then the second frame is placed on the left side surface of the first flange portion 2c. The first frame 8a and the second frame 8b are caulked and fixed with the 8b in contact. In the frame fixing step S8, the frame 8 is fixed to the bobbin 2 by an automatic machine.

  Thereafter, the lead wires 6 and 7 are inserted into the lead wire accommodation holes 2f and 2g (lead wire insertion step S8). Specifically, as shown in FIG. 8, the leading ends of the lead wires 6 and 7 are stored in the lead wires in the right direction so that the conducting portions 6a and 7a protrude from the right end surface of the lead wire storing portion 2e. The holes 2f and 2g are inserted.

  Thereafter, as shown in FIG. 9, the tip 3a wound around the tip winding portion 18b is detached from the tip winding portion 18b and attached to the conducting portion 6a of the lead wire 6, and wound around the rear end winding portion 18c. The rotated rear end portion 3b is removed from the rear end winding portion 18c and attached to the conducting portion 7a of the lead wire 7 (conductor end portion attaching step S10). In this conductor wire end mounting step S10, the fixing portion 17 inserted in the jig mounting groove 2n is pulled out to the right and the winding pin 18 is rotated counterclockwise in FIG. The tip part 3a is extracted from the tip end winding part 18b and the rear end part 3b is extracted from the rear end winding part 18c (while the winding part 18b and the rear end winding part 18c are tilted to the left). Moreover, after that, the front-end | tip part 3a is penetrated to the conduction | electrical_connection part 6a, and the rear-end part 3b is penetrated to the conduction | electrical_connection part 6a. In addition, the operation | work in conducting wire edge part attachment process S10 is performed manually. Further, in this embodiment, preliminary solder is applied to the conductive portions 6a and 7a in advance.

  Then, while soldering the front-end | tip part 3a and the conduction | electrical_connection part 6a, the rear-end part 3b and the conduction | electrical_connection part 7a are soldered (soldering process S11). In this soldering step S11, the soldering portions 12 and 13 are formed. Further, in this soldering step S11, the insulating film of the conducting wire 3 is broken, and the conducting wire 3 and the conducting portions 6a and 7a are electrically connected.

  Thereafter, the lead wires 6 and 7 are pulled to the left, and the soldered portions 12 and 13 are accommodated in the lead wire accommodating holes 2f and 2g (accommodating step S12). Specifically, as shown in FIG. 4, the soldered portions 12 and 13 are accommodated in the lead wire accommodating holes 2f and 2g so that the right ends of the lead wires 6 and 7 do not protrude from the right end of the lead wire accommodating portion 2e. .

  Thereafter, the lead wires 6 and 7 are routed (lead wire routing step S13). Specifically, the lead wires 6 and 7 drawn leftward from the lead wire housing holes 2f and 2g are folded back to the left of the lead wire housing portion 2e, and then placed in the jig mounting groove 2n. And pull it to the right. In the lead wire routing step S13, after the lead wires 6 and 7 are routed, an insulating cloth tape is wound around the lead wire storage portion 2e. When the winding of the cloth tape is finished, the manufacturing process of the coil 1 is finished.

(Main effects of this form)
As described above, in this embodiment, the conductive portions 6a and 7a of the lead wires 6 and 7 are connected to the lead wire storage holes 2f and 2g of the lead wire storage portion 2e integrally formed on the outer peripheral surface of the second flange portion 2d. The side is stored. Therefore, in the lead wire storage portion 2e, the conductive portions 6a and 7a side of the lead wires 6 and 7 can be easily positioned and fixed with respect to the bobbin 2. As a result, the manufacturing process of the coil 1 can be simplified.

  In this embodiment, the lead wire receiving holes 2f and 2g are formed in the axial direction of the bobbin 2 (that is, the left and right direction), and the lead wires 6 and 7 are stored in the lead wire toward the axial direction of the bobbin 2. The holes 2f and 2g are inserted. Therefore, the lead wire storage portion 2e can be downsized in the vertical direction. Therefore, the coil 1 can be downsized in the vertical direction without performing the bending work described in Patent Document 2 described above. That is, in this embodiment, the bending work is not necessary, and as a result, the manufacturing process of the coil 1 can be simplified.

  In this embodiment, a part of the lead wires 6 and 7 is disposed in the jig mounting groove 2n formed in the lead wire storage portion 2e in order to route the lead wires 6 and 7. Therefore, since the lead wires 6 and 7 can be routed using the jig mounting groove 2n without separately providing a configuration for routing the lead wires 6 and 7, the configuration of the coil 1 can be simplified. .

  In this embodiment, the soldering portions 12 and 13 are accommodated in the lead wire accommodating holes 2f and 2g formed with a predetermined interval in the front-rear direction. That is, the soldering portions 12 and 13 are disposed inside the lead wire housing portion 2e formed of an insulating resin material. Therefore, the insulation between the soldering part 12 and the soldering part 13 and the insulation between the soldering parts 12 and 13 and the conducting wire 3 can be reliably performed. That is, a short circuit between the soldering part 12 and the soldering part 13 and a short circuit between the soldering parts 12 and 13 and the conductor 3 can be prevented. In addition, the lead wire storage portion 2e can protect the soldering portions 12 and 13 from external impacts.

  In this embodiment, the jig mounting portion 2k to which the temporary fixing jig 16 for temporarily fixing the ends 3a and 3b of the conductive wire 3 before being connected to the conducting portions 6a and 7a is attached to the lead wire storage portion 2e. Is formed. Further, the leading end portion 3a of the conducting wire 3 is temporarily fixed to the temporarily fixing jig 16 in the leading end portion temporary fixing step S3, and the trailing end portion 3b of the conducting wire 3 is temporarily fixed in the trailing end portion temporary fixing step S5. Is temporarily fixed. Therefore, it is possible to respond flexibly to the user's needs with a short delivery time. That is, the post-frame fixing step S8 can be stored as an inventory, and then the lead wires 6 and 7 can be selected according to the order from the user, and the steps after the lead wire insertion step S9 can be performed. As a result, after the order from the user, the steps after the lead wire insertion step S9 may be performed, so that it is possible to respond flexibly to the user's needs with a short delivery time.

  In the present embodiment, the lead wire housing holes 2f and 2g are formed so as to penetrate the lead wire housing portion 2e in the left-right direction, and the lead wires 6 and 7 can be inserted in both the left and right directions. It is formed as follows. Therefore, as in this embodiment, the lead wires 6 and 7 can be pulled out in the right direction, and the lead wires 6 and 7 can be pulled out in the left direction. Therefore, it is possible to respond flexibly to the user's needs with a short delivery time. That is, the post-frame fixing step S8 is stored as stock, and then, according to the order from the user, it is determined whether the lead wires 6 and 7 are pulled out to the right or left, and the lead wire insertion step The process after S9 can be performed. As a result, after ordering from the user, it is only necessary to perform the steps after the lead wire insertion step S9, so that the coil 1 can be delivered with a short delivery time.

  Further, in this embodiment, the exterior tape 10 in a state where the end portions 3a and 3b of the conducting wire 3 are temporarily fixed to the temporary fixing jig 16 in the exterior tape winding process S7 which is a process prior to the lead wire insertion process S9. Is wound. That is, the exterior tape 10 is wound in a state where the lead wires 6 and 7 are not attached. Therefore, the lead wires 6 and 7 do not hinder the winding work of the exterior tape 10. Therefore, the winding work of the exterior tape 10 can be performed automatically, and the work efficiency of the winding work of the exterior tape 10 can be increased. In the frame fixing step S8, the frame 8 is fixed to the bobbin 2 without the lead wires 6 and 7 being attached. Therefore, the frame 8 can be fixed to the bobbin 2 automatically, and the work efficiency of the frame 8 fixing operation can be increased.

  In this embodiment, in the lead wire end attaching step S10, the tip end portion 3a is wound around the tip end while the fixing portion 17 inserted in the jig attaching groove 2n is pulled rightward and the winding pin 18 is rotated. The rear end portion 3b is extracted from the rear end winding portion 18c. Therefore, it becomes easy to remove the end portions 3a and 3b of the temporarily fixed conducting wire 3. That is, it is possible to simplify the work in the conductor wire end attaching step S10.

[Embodiment 2]
FIG. 10 is a side view of the coil 21 according to the second embodiment of the present invention. FIG. 11 is a plan view of the coil 21 shown in FIG. 12 is a diagram showing the bobbin 22 from the GG direction of FIG. FIG. 13 is a view for explaining the HH cross section of FIG. 10. FIG. 14 is a diagram for explaining a part of the manufacturing process of the coil 21 shown in FIG.

  In the coil 21 according to the second embodiment, the configuration of the bobbin 22 is different from the configuration of the bobbin 2 described above. Specifically, the configuration of the lead wire storage portion 22e is different from the configuration of the lead wire storage portion 2e described above. Therefore, hereinafter, the configuration of the coil 21 according to the second embodiment and the manufacturing method thereof will be described focusing on this difference. 10 to 14, the same reference numerals are given to the configurations that are common to the first embodiment. In the following description, the description of the configuration common to the first embodiment is simplified or omitted. In FIG. 10, the illustration of the frame 8 is omitted.

  The bobbin 22 of the second embodiment is a flanged cylindrical member in which a through hole 2a is formed, similar to the bobbin 2 described above. The bobbin 22 includes a body 2b, a first flange 2c formed at the left end of the body 2b, a second flange 2d formed at the right end of the body 2b, and lead wires 6 and 7. And a lead wire storage portion 22e for storing a part thereof. That is, the body portion 2b, the first flange portion 2c, the second flange portion 2d, and the lead wire storage portion 22e are integrally formed of an insulating resin material.

  The lead wire storage portion 22e is integrally formed on the outer peripheral surface of the second flange portion 2d. Specifically, a block-shaped lead wire storage portion 22e is integrally formed by resin molding at a substantially central portion of the upper side portion of the second flange portion 2d. As shown in FIG. 11, the lead wire storage portion 22e of this embodiment is formed so that the shape seen from the top-bottom direction is substantially T-shaped. Further, the lead wire storage portion 22e is formed on the upper side portion of the second flange portion 2d so as to protrude slightly from the upper surface of the second flange portion 2d and to protrude to the opposite side (right side) of the body portion 2b. Is formed.

  The lead wire housing portion 22e has a lead wire housing hole 22f for housing the conducting portion 6a side of the lead wire 6, a lead wire housing hole 22g for housing the conducting portion 7a side of the lead wire 7, and a distal end portion 3a of the conducting wire 3. A guide groove 22h for routing the side, a guide groove 22j for routing the rear end 3b side of the conducting wire 3, and a jig mounting portion 22k to which the temporary fixing jig 16 is mounted are formed. The jig mounting portion 22k includes a jig mounting groove 22n formed in the same manner as the above-described jig mounting groove 2n and a jig mounting piece 22p formed in the same manner as the above-described jig mounting piece 2p. Has been.

  As shown in FIG. 12 and the like, the lead wire housing hole 22f is formed so as to penetrate the lead wire housing portion 22e from the jig mounting groove 22n toward the rear end surface of the lead wire housing portion 22e. The lead wire housing hole 22g is formed so as to penetrate the lead wire housing portion 22e from the jig mounting groove 22n toward the front end surface of the lead wire housing portion 22e. That is, the lead wire receiving holes 22f and 22g are linear in the front-rear direction which is a direction orthogonal to the direction from the axial center of the bobbin 22 to the outer peripheral surface (that is, the radial direction of the bobbin 22) and the axial direction of the bobbin 22. Is formed. The lead wire storage holes 22f and 22g are formed on the left end side of the lead wire storage portion 22e. Similar to the lead wire housing holes 2f and 2g, the lead wire housing holes 22f and 22g are circular holes having a diameter slightly larger than the diameter of the lead wires 6 and 7 covered with the insulating coating.

  In this embodiment, as shown in FIG. 11 and the like, the leading end portion of the lead wire 6 is inserted into the lead wire housing hole 22f from the jig mounting groove 22n toward the rear end surface of the lead wire housing portion 22e. That is, the lead wire 6 is inserted into the lead wire housing hole 22f so that the conducting portion 6a is disposed on the rear end face side of the lead wire housing portion 22e. Further, the leading end portion of the lead wire 7 is inserted into the lead wire accommodating hole 22g from the jig mounting groove 22n toward the front end face of the lead wire accommodating portion 22e. That is, the lead wire 7 is inserted into the lead wire housing hole 22g so that the conducting portion 7a is disposed on the front end face side of the lead wire housing portion 22e.

  Moreover, as shown in FIG. 13, the soldering parts 12 and 13 are arrange | positioned inside the lead wire accommodation holes 22f and 22g. Specifically, the soldering portion 12 is disposed inside the lead wire housing hole 22f so that the tip of the lead wire 6 does not protrude from the rear end surface of the lead wire housing portion 22e, and the tip of the lead wire 7 is stored in the lead wire. The soldering portion 13 is disposed inside the lead wire accommodation hole 22g so as not to protrude from the front end surface of the portion 22e.

  The guide grooves 22h and 22j are formed so as to be recessed from the left end surface of the lead wire storage portion 22e. The guide grooves 22h and 22j are formed below the lead wire accommodation holes 22f and 22g. Further, the guide grooves 22h and 22j are respectively formed at end portions in the front-rear direction of the lead wire storage portion 22e. A guide groove 22m corresponding to the above-described guide groove 2m is formed on the left side surface of the second flange portion 2d. The guide groove 22m is formed to be continuous with the guide groove 22h.

  As in the first embodiment, when the coil 21 is completed, as shown in FIG. 11 and the like, a part of the lead wires 6 and 7 is disposed in the jig mounting groove 22n to route the lead wires 6 and 7. Has been. In this embodiment, the lead wire 6 drawn forward from the lead wire housing hole 22f is bent at approximately 90 ° rightward in the jig mounting groove 22n. Further, the lead wire 7 drawn rearward from the lead wire housing hole 22g is bent at approximately 90 ° rightward in the jig mounting groove 22n. The lead wires 6 and 7 bent at approximately 90 ° in the jig mounting groove 22n are routed in the jig mounting groove 2n and drawn rightward.

  In addition, the lead wires 6 and 7 drawn out from the lead wire housing holes 22f and 22g may be bent approximately 90 ° in the left direction in the jig mounting groove 22n and drawn out in the left direction. In this case, the lead wire housing holes 22f and 22g are preferably formed on the right end side of the lead wire housing portion 22e. Further, as in the first embodiment, an insulating cloth tape (not shown) is wound around the lead wire storage portion 22e, and the lead wire that has passed through the jig mounting groove 22n by this cloth tape. 6 and 7 are securely fixed to the lead wire storage portion 22e.

  The coil 21 configured as described above is manufactured through the same manufacturing process as the coil 1 of the first embodiment.

  That is, first, similarly to the first embodiment, the temporary fixing jig 16 is attached to the lead wire storage portion 22e (jig attachment step S1). After this jig mounting step S1, as shown in FIG. 14, the leading end winding portion 18b is disposed on the right side of the rear end surface of the lead wire storage portion 22e, and the rear end winding portion 18c is disposed on the lead wire storage portion 22e. It is arranged on the right side of the front end face. As shown in FIG. 14, in the second embodiment, the fixing portion 17 is inserted into the jig mounting groove 22n so that the fixing portion 17 does not block the lead wire receiving holes 22f and 22g.

  Thereafter, similarly to the first embodiment, the bobbin 22 is fixed to a fixing jig of the automatic winding machine (bobbin fixing step S2). Thereafter, the distal end portion 3a is wound around the distal end winding portion 18b and temporarily fixed (tip portion temporary fixing step S3), and the conductive wire 3 is wound around the body portion 2b (winding step S4). When the conducting wire 3 is wound around the trunk portion 2b, the conducting wire 3 is guided from the tip winding portion 18b to the trunk portion 2b using the guide grooves 22h and 22m. When the winding of the conducting wire 3 around the trunk portion 2b is completed, the rear end portion 3b is wound around the rear end winding portion 18c and temporarily fixed (rear end portion temporary fixing step S5). When the rear end portion 3b is wound around the rear end winding portion 18c, the rear end portion 3b is guided from the body portion 2b to the rear end winding portion 18c using the guide groove 22j.

  Thereafter, the bobbin 22 with the temporary fixing jig 16 attached thereto is removed from the fixing jig of the automatic winding machine (bobbin removing step S6), and the entire outer peripheral surface of the conducting wire 3 wound around the body 2b is covered. Thus, the exterior tape 10 is wound (exterior tape winding step S7). Thereafter, the frame 8 is fixed to the bobbin 22 (frame fixing step S8).

  Thereafter, the lead wires 6 and 7 are inserted into the lead wire accommodation holes 22f and 22g (lead wire insertion step S8). Specifically, as shown in FIG. 14, from the jig mounting groove 22n toward the rear end surface of the lead wire storage portion 22e, the conducting portion 6a of the lead wire 6 protrudes from the rear end surface of the lead wire storage portion 22e. Then, the leading end portion of the lead wire 6 is inserted into the lead wire housing hole 22f. Similarly, the leading end portion of the lead wire 7 is moved from the jig mounting groove 22n toward the front end surface of the lead wire storage portion 22e so that the conducting portion 7a of the lead wire 7 protrudes from the front end surface of the lead wire storage portion 22e. The lead wire is inserted into the lead hole 22g.

  Thereafter, as in the first embodiment, the distal end portion 3a wound around the distal end winding portion 18b is detached from the distal end winding portion 18b and attached to the conducting portion 6a, and is wound around the rear end winding portion 18c. The rear end portion 3b is detached from the rear end winding portion 18c and attached to the conducting portion 7a (conductor end attaching step S10).

  Then, while soldering the front-end | tip part 3a and the conduction | electrical_connection part 6a, the rear-end part 3b and the conduction | electrical_connection part 7a are soldered (soldering process S11). Thereafter, the lead wire 6 is pulled forward to store the soldered portion 12 in the lead wire receiving hole 22f, and the lead wire 7 is pulled rearward to store the soldered portion 13 in the lead wire receiving hole 22g (stored). Step S12). Specifically, as shown in FIG. 13, the tip of the lead wire 6 does not protrude from the rear end surface of the lead wire storage portion 22e, and the tip of the lead wire 7 protrudes from the front end surface of the lead wire storage portion 22e. In order to avoid this, the soldering portions 12 and 13 are accommodated in the lead wire accommodating holes 22f and 22g.

  Thereafter, the lead wires 6 and 7 are routed (lead wire routing step S13). Specifically, the lead wires 6 and 7 drawn out toward the jig mounting groove 22n are bent at approximately 90 ° toward the right, and then placed in the jig mounting groove 22n and pulled out to the right. . In the lead wire routing step S13, after the lead wires 6 and 7 are routed, an insulating cloth tape is wound around the lead wire storage portion 22e. When the winding of the cloth tape is finished, the manufacturing process of the coil 21 is finished.

  As described above, even the coil 21 according to the second embodiment can obtain the same effects as those of the coil 1 of the first embodiment. For example, in this embodiment, the following effects can be obtained as the main effects as in the first embodiment.

  In this embodiment, since the conducting portions 6a and 7a side of the lead wires 6 and 7 are accommodated in the lead wire accommodating holes 22f and 22g, the lead wires 6 and 7 are in the lead wire accommodating portion 22e with respect to the bobbin 22. The conducting portions 6a and 7a can be easily positioned and fixed. As a result, the manufacturing process of the coil 21 can be simplified. In this embodiment, the lead wire receiving holes 22f and 22g are formed linearly in the front-rear direction, and the lead wires 6 and 7 are inserted in the lead wire receiving holes 22f and 22g in the front and rear direction. Thus, the lead wire storage portion 22e can be reduced in size. Therefore, the coil 21 can be downsized in the vertical direction without performing the bending work described in Patent Document 2 described above. That is, in this embodiment, a bending operation is not necessary. As a result, the manufacturing process of the coil 21 can be simplified.

[Other embodiments]
In the first embodiment described above, the soldering portions 12 and 13 are accommodated in the lead wire accommodating holes 2f and 2g so that the tips of the lead wires 6 and 7 do not protrude from the right end surface of the lead wire accommodating portion 2e. In the second embodiment described above, the soldering portion 12 is stored in the lead wire storage hole 22f so that the tip of the lead wire 6 does not protrude from the rear end surface of the lead wire storage portion 22e, and the tip of the lead wire 7 is The soldering portion 13 is accommodated in the lead wire accommodating hole 22g so as not to protrude from the front end surface of the lead wire accommodating portion 22e. That is, the soldering portions 12 and 13 are completely stored in the lead wire storage holes 2f, 2g, 22f, and 22g. In addition, for example, part of the soldering portions 12 and 13 may not be stored in the lead wire storage holes 2f, 2g, 22f, and 22g.

  Further, in the above-described form, the soldering portions 12 and 13 are stored in the lead wire receiving holes 2f, 2g, 22f, and 22g, but the soldering portions 12 and 13 are connected to the lead wire storing holes 2f, 2g, 22f, It does not need to be stored in 22g. For example, as shown in FIG. 15, the soldering portion 13 may protrude from the left end surface of the lead wire storage portion 2e without being stored in the lead wire storage hole 2g. In this case, the storing step S12 can be omitted in the manufacturing process of the coils 1 and 21. In this case, in the lead wire routing step S13, a cloth tape may be wound around the lead wire storage portions 2e and 22e so that the soldering portions 12 and 13 are also covered with the insulating cloth tape.

  In the first embodiment described above, the soldered portions 12 and 13 are not accommodated in the lead wire accommodating holes 2f and 2g, and the lead wires 6 and 7 are located on the right side of the lead wire accommodating holes 2f and 2g. When the lead wire is pulled out in the direction, folded back to the right of the lead wire storage portion 2e, drawn around the jig mounting groove 2n and pulled out to the left, the conducting portions 6a and 7a are directed upward. It may be bent. In this case, the conductive portions 6a and 7a may protrude as they are toward the left side.

  In the first embodiment described above, the jig mounting groove 2n is formed slightly above the lead wire accommodation holes 2f and 2g in the vertical direction. In addition, for example, as shown in FIG. 15, the jig mounting groove 2n may be formed at the same position as the lead wire receiving holes 2f and 2g in the vertical direction. That is, the storage portions of the lead wires 6 and 7 in the lead wire storage holes 2f and 2g and the placement portions of the lead wires 6 and 7 in the jig mounting groove 2n may be arranged in parallel at the same height.

  In the embodiment described above, the end portions 3 a and 3 b are temporarily fixed to the temporary fixing jig 16. In addition, for example, the end portions 3a and 3b may be temporarily fixed directly to the lead wire storage portions 2e and 22e or the second flange portion 2d with a tape or the like. Alternatively, a temporary fixing pin may be attached to the lead wire storage portions 2e and 22e, and the end portions 3a and 3b may be wound around the pin and temporarily fixed. In this case, a pin insertion hole for inserting a pin for temporary fixing may be formed in the lead wire storage portions 2e, 22e, or a pin may be inserted in the lead wire storage holes 2f, 2g, 22f, 22g. good. When inserting pins into the lead wire housing holes 2f, 2g, 22f, 22g, the pins may be extracted from the lead wire housing holes 2f, 2g, 22f, 22g before the lead wire insertion step S9. In this case, in the second embodiment, one pin may be inserted into the lead wire receiving holes 22f and 22g.

  When the end portions 3a and 3b are wound around the temporarily fixing pin, the temporarily fixing pin and the conducting portions 6a and 7a of the lead wires 6 and 7 may be soldered. In other words, the temporary fixing pins and the conductive portions 6a and 7a may be soldered without removing the end portions 3a and 3b from the temporary fixing pins.

  In the embodiment described above, the jig attachment portions 2k and 22k are formed in the lead wire storage portions 2e and 22e. In addition to this, for example, a jig mounting portion may be formed at a predetermined location of the second flange portion 2d other than the location where the lead wire storage portions 2e and 22e are formed.

  In the embodiment described above, the frame fixing step S8 is performed before the lead wire insertion step S9. However, the frame fixing step S8 may be performed after the lead wire insertion step S9. For example, the frame fixing step S8 may be performed after the lead wire routing step S13.

  In the embodiment described above, the leading end 3a is automatically wound around the leading end winding portion 18b by the automatic winding machine in the leading end temporary fixing step S3, and the trailing end winding is performed in the trailing end temporary fixing step S5. The winding of the rear end portion 3b around the portion 18c is automatically performed by an automatic winding machine. In addition to this, for example, the winding of the front end portion 3a around the front end winding portion 18b and the winding of the rear end portion 3b around the rear end winding portion 18c may be performed manually.

  In the embodiment described above, the soldering portions 12 and 13 are stored in the lead wire storage holes 2f, 2g, 22f, and 22g as they are in the storage step S12. In addition, for example, in the storing step S12, an adhesive (for example, a resin-based adhesive) is applied to the soldering portions 12 and 13, and the soldering portions 12 and 13 are lead before the adhesive is cured. You may accommodate in the wire accommodation holes 2f, 2g, 22f, and 22g. In this case, since the adhesive is cured inside the lead wire housing holes 2f, 2g, 22f, and 22g, the strength of the lead wire housing portions 2e and 22e can be increased. Moreover, the pull-out strength of the lead wires 6 and 7 can be increased.

  In the second embodiment described above, the lead wire storage portion 22e is formed so that the shape seen from the top and bottom is substantially T-shaped as shown in FIG. 11, and a part of the lead wire storage portion 22e is formed. It protrudes to the right side of the second flange 2d. In addition to this, as shown in FIG. 16, for example, a lead wire storage portion 32e is composed of two substantially rectangular parallelepiped blocks formed on the upper surface of the second flange portion 2d and disposed on both sides in the front-rear direction of the groove portion 32n. May be. That is, the lead wire storage portion 32e may be formed so that a part of the lead wire storage portion 32e hardly protrudes to the right side of the second flange portion 2d (or does not protrude at all). In this case, the lead wire accommodating portion 32e is formed with a lead wire accommodating hole 32f for accommodating the conducting portion 6a side of the lead wire 6 and a lead wire accommodating hole 32g for accommodating the conducting portion 7a side of the lead wire 7. Yes. Further, the lead wires 6 and 7 are routed using the groove 32n. In this case, a temporary fixing pin is fixed to the lead wire receiving holes 32f and 32g without using the temporary fixing jig 16, and the end portions 3a and 3b are wound around the pin and temporarily fixed. Is preferred.

Claims (8)

A conductive wire, a bobbin around which the conductive wire is wound, and a lead wire having a conductive portion on the distal end side to which an end of the conductive wire is connected,
The bobbin is formed integrally with an outer peripheral surface of the flange and a flange formed at an end of the bobbin in the axial direction and a lead wire storage hole for storing the conductive portion side of the lead wire. A lead wire storage section,
The coil, wherein the lead wire housing hole is formed in a direction orthogonal to the axial direction from the axial center of the bobbin and the axial direction, or in the axial direction.   The lead wire storage portion or the flange portion is formed with a jig attachment portion to which a temporary fixing jig for temporarily fixing the end portion of the conducting wire before being connected to the conducting portion is attached. The coil according to claim 1. The jig mounting portion includes a jig mounting groove formed in the lead wire storage portion,
The coil according to claim 2, wherein a part of the lead wire is disposed in the jig mounting groove so as to route the lead wire.   The coil according to claim 1, wherein a soldered portion formed by soldering the conductive portion and an end portion of the conductive wire is accommodated in the lead wire accommodating hole.   The lead wire housing hole is formed so as to penetrate the lead wire housing portion in the axial direction, and the lead wire can be inserted into the lead wire housing hole in both axial directions. The coil according to claim 1, wherein the coil is formed. In a method of manufacturing a coil, comprising: a conducting wire; a bobbin around which the conducting wire is wound; and a lead wire having a conducting portion to which an end of the conducting wire is connected on the distal end side.
A tip part temporary fixing step of temporarily fixing the tip part of the conducting wire to the temporary fixing jig attached to the bobbin or the bobbin;
A winding step of winding the conductive wire around the bobbin;
A rear end temporary fixing step of temporarily fixing the rear end of the conducting wire to the temporary fixing jig or the bobbin;
A lead wire storage portion formed integrally with the outer peripheral surface of the flange portion formed on the bobbin is directed in a direction orthogonal to the axial direction from the axial center of the bobbin to the outer peripheral surface, or in the axial direction. A lead wire insertion step of inserting the lead wire into a lead wire accommodation hole in which the conductive portion side of the lead wire is accommodated, and
A lead end attaching step for attaching the end of the conducting wire temporarily fixed to the temporary fixing jig or the bobbin to the conducting portion inserted into the lead wire accommodation hole;
A method of manufacturing a coil, comprising: a soldering step of soldering the conductive portion and an end portion of the conductive wire.   The coil manufacturing method according to claim 6, further comprising a housing step of housing the soldered portion formed in the soldering step in the lead wire housing hole. In the front end portion temporary fixing step and the rear end portion temporary fixing step, the end portion of the conducting wire is temporarily fixed to the temporary fixing jig,
The temporary fixing jig is configured to be fixed to the lead wire storage portion, and to be rotatable with respect to the fixing portion with a direction orthogonal to the axial direction as a direction of a rotation axis. It has a winding pin on which the end is wound and temporarily fixed,
The said conducting wire end part attaching process removes the edge part of the said conducting wire wound by the said winding pin, rotating the said winding pin, and attaches it to the said conduction | electrical_connection part. Coil manufacturing method.

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