JP4966819B2 - Coil winding device - Google Patents

Description

  The present invention relates to a coil winding apparatus for producing a coil winding body without a winding core.

Coils used for electromagnetic actuators and motors are generally manufactured by winding them around the circumference of a core made of an insulator called a bobbin. In order to increase the number, a technique for eliminating the bobbin has been proposed (Patent Document 1).
JP 2007-67090 A

  By the way, in order to obtain a coil winding body without a winding core described in Patent Document 1, a wire (coil wire) is once wound around a claw body which is a winding core and can be expanded and contracted. It is necessary to produce.

  The present invention has been made in connection with the above proposal, and when obtaining a coil winding body without a winding core, the upper plate and the lower plate are stably disposed on the upper side and the lower side of the claw body. It is an object of the present invention to provide a coil winding device that can be used.

  As a result of intensive research, the inventors of the present application have arranged an upper plate and a lower plate spaced apart from each other by a predetermined interval in order to regulate the winding width of the wire, above and below the nail body that opens when the wire is wound, A coil is formed by winding a wire around the nail body between the upper plate and the lower plate, and the upper plate and the lower plate are restrained by an appropriate restraining means (in the embodiment described later, a curly line). It was found that a coil winding body having no winding core (bobbinless) can be obtained by extracting.

  Accordingly, the present invention is a coil winding apparatus for producing a coil winding body that includes a coil around which a wire is wound, an upper plate and a lower plate that sandwich the coil, and does not include a winding core. An upper jig on which the upper plate is mounted and a lower jig on which the lower plate is mounted, wherein the upper jig and the lower jig are provided relatively displaceably, The jig has a circumferential surface around which a wire is wound, a cylindrical claw body configured to include a plurality of claw pieces arranged in the circumferential direction and sliding in the radial direction, and the claw pieces in the radial direction. A coil winding device comprising: a first spring member that biases inward, and a second spring member that biases the claw body upward.

According to such a coil winding apparatus, for example, when the upper jig is displaced toward the lower jig and the upper jig is mounted toward the lower jig, the claw body is a spring of the first spring member. After sliding outward in the radial direction against the force, it slides downward in the axial direction against the spring force of the second spring member.
As a result, the lower surface of the nail body formed on the lower side of the nail body and the upper surface of the lower plate can be stably in contact with each other, and the lower plate can be stably disposed on the nail body. It becomes.
Thus, when the upper plate is located on the upper side of the nail body and the lower plate on the lower side of the nail body is stably placed at a predetermined position, for example, when a nail body that slides only radially outward is used. A problem that the outer peripheral surface of the claw body comes into contact with the inner peripheral surface of the lower plate is prevented.

  Moreover, it is a coil winding apparatus characterized by including an annular plate between the claw body and the second spring member.

  According to such a coil winding device, the second spring member can evenly bias the claw body upward via the annular plate. In other words, when the upper jig is displaced toward the lower jig and the upper jig is inserted into the hollow portion of the claw body, the load from the claw body is evenly distributed to the second spring member via the annular plate. The load can be suitably absorbed by the second spring member.

  The coil winding device is characterized in that a guide groove for guiding a wire is formed on a peripheral surface of at least one of the plurality of claw pieces.

  According to such a coil winding device, the winding of the wire can be guided by the guide groove, and the wire can be aligned in the axial direction.

  The coil winding device is characterized in that a peripheral surface of at least one claw piece among the plurality of claw pieces is a smooth curved surface.

  According to such a coil winding device, the wire can be smoothly transferred to the next row in the axial direction in the portion of the claw piece whose peripheral surface is a smooth curved surface.

  According to the present invention, a coil winding device capable of stably arranging an upper plate and a lower plate on an upper side and a lower side of a claw body when a coil winding body without a winding core is suitably obtained. Obtainable.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

≪Coil winding body≫
First, a coil winding body 100 manufactured by the coil winding apparatus 1 according to the present embodiment will be described with reference to FIGS. 1 to 4.
As shown in FIGS. 1 and 2, the coil winding body 100 is a bobbinless winding body that does not have a winding core. A circular upper plate 110 and a lower plate 120 made of resin are provided.

  A through hole 111 through which an upper jig A described later is inserted is formed at the center of the upper plate 110, and a through hole 121 through which the nail body 40 described later is inserted is formed at the center of the lower plate 120. ing. Then, the outer peripheral edge of the upper plate 110 and the outer peripheral edge of the lower plate 120 are alternately connected in the circumferential direction of the coil winding body 100 by a tangled wire 130, whereby the coil 102 formed by the upper plate 110 and the lower plate 120. Is maintained.

As shown in FIG. 3, a pin hole 113 into which a pin 12 (see FIG. 5) of the upper jig A described later is inserted is formed on the upper surface of the upper plate 110. Thereby, the upper plate 110 is positioned with respect to the upper jig A.
As shown in FIG. 4, a pin hole 123 into which a pin 54 (see FIG. 5) of the lower jig B described later is inserted is formed on the lower surface of the lower plate 120. Thereby, the lower plate 120 is positioned with respect to the lower jig B.
In addition, the pin holes 113 and 123 do not penetrate the upper plate 110 or the lower plate 120 and are blocked on the way. As a result, the outer surface of the coil 102 held between the upper plate 110 and the lower plate 120 is not damaged.

  A pair of winding portions 125 and 126 having a substantially L-shaped vertical cross section are formed on the front side of the lower plate 120. One winding portion 125 is a portion where the wire 101 is wound about twice in order to wind the wire 101 when starting to wind the wire 101 around the claw body 40. The other winding portion 126 is a portion around which the wire 101 is wound in order to wind the wire 101 when the wire 101 has been wound.

  Note that the bobbinless coil winding body 100 without such a winding core is, for example, resin-molded on the outer surface excluding the inner peripheral surface, and an active vibration-proof support device (Japanese Patent Laid-Open No. 2007-182955). , See JP-A-2007-85399).

≪Coil winding device≫
Next, the coil winding apparatus 1 will be specifically described with reference mainly to FIGS.
As shown in FIG. 5, the coil winding device 1 includes an upper jig A and a lower jig B. The lower jig B is configured to be rotatable by a driving device (not shown) such as a motor. The upper jig A is configured to be movable up and down (displaced) with respect to the lower jig B by an elevating mechanism (not shown), and is rotated integrally with the lower jig B in a state assembled to the lower jig B. It is configured.

<Upper jig>
As shown in FIG. 6, the upper jig A includes an upper jig body 10 and a tapered body 20.

The upper jig body 10 includes a mounting seat 11 and an insertion rod portion 15 that extends vertically downward from the mounting seat 11.
The mounting seat 11 is supported by an elevating mechanism (not shown) so as to be movable up and down, and is a portion on which the upper plate 110 is mounted, and is provided with a pin 12 for determining a relative position with the upper plate 110. The upper plate 110 is attached to the attachment seat 11 by an opening / closing claw 13 (see FIG. 9) that opens and closes in the radial direction.

The insertion rod portion 15 has a substantially columnar shape, and is a portion to be inserted into a claw body 40 described later of the lower jig B, and a lower end thereof is a tapered surface 16 so as to be easily inserted.
Further, a key groove 17 into which the key 31 (see FIGS. 10 and 11) of the lower jig B is fitted is formed in the lower direction of the insertion rod portion 15. Thereby, the relative position in the circumferential direction of the insertion rod part 15 (upper jig | tool A) and the lower jig | tool B is positioned.
Further, a rotating lock groove 18 is formed on the peripheral surface of the insertion rod portion 15, and when the upper jig A is inserted, the lock piece 32 of the lower jig B is the lock groove 18 (see FIG. 11). It is supposed to fit in. This prevents the upper jig A from being removed after the upper jig A is inserted.

The taper body 20 has a substantially inverted truncated cone, and after the lower portion of the insertion rod portion 15 is inserted into the claw body 40, the taper body 20 is subsequently inserted into the claw body 40 and has a taper surface on its circumferential surface. 21. Further, the taper body 20 has an insertion hole 22 penetrating on its axis, and the insertion rod portion 15 is inserted through the insertion hole 22.
Further, two screw rods 23, 23 are disposed above the tapered body 20, and the two screw rods 23, 23 are screwed into the two screw holes 14, 14 of the mounting seat 11. And the nut 24 is screwed at the upper end of each screw rod 23, and the lower end position of the two screw rods 23, 23 is set to a predetermined height by the nut 24 being locked to the mounting seat 11. It is possible. The lower ends of the screw rods 23, 23 abut on the upper surface of the taper body 20, and as a result, the taper body 20 has a predetermined height defined by the height of the screw rods 23, 23 with respect to the mounting seat 11. Set to The tapered body 20 is guided in a vertical direction with respect to the upper jig body 10 by a key (not shown) and is held so as not to fall off.

  A compression coil spring 25 is interposed between the taper body 20 and the mounting seat 11, and when the upper jig A is inserted into the claw body 40, the taper surface 21 of the taper body 20 corresponds to the claw body 40. The taper is preferably in contact with the tapered surface 40a.

<Lower jig>
The lower jig B includes a lower jig main body 30, a claw body 40 provided on the upper part of the lower jig main body 30, and three pieces for urging each claw piece 41 of the claw body 40 radially inward by a spring force. The radial spring 51 (first spring member), six thrust springs 65 (second spring members) that bias the claw body 40 upward by the spring force, and the thrust spring 65 and the claw body 40 are interposed between them. And an annular plate 61 mounted thereon.

  The lower jig body 30 is provided so as to be appropriately rotatable by a driving device (not shown) such as a motor. The lower jig body 30 is provided with a key 31 that fits into the key groove 17 of the upper jig A (see FIG. 11). The lower jig body 30 is provided with a lock piece 32 that fits into the lock groove 18 of the upper jig A (see FIG. 11).

The claw body 40 is a part that has a cylindrical shape in a closed state, and includes three claw pieces 41 that are divided in the circumferential direction and have an arc shape in a plan view.
Each claw piece 41 is slidably arranged in the radial direction and is urged (pressed) radially inward by a radial spring 51. That is, when the upper jig A is not inserted into the claw body 40, each claw piece 41 is pushed radially inward by the spring force of the radial spring 51, the claw body 40 is reduced in diameter, and the claw body 40 is closed. It has become. On the other hand, when the upper jig A is inserted into the claw body 40, each claw piece 41 moves radially outward against the spring force of the radial spring 51, the claw body 40 expands in diameter, and the claw body 40 It is supposed to open.
The wire 101 is wound around the outer peripheral surface of the open claw body 40.

  The inner peripheral surface of each claw piece 41 is a tapered surface 40a having a diameter reduced downward, and the lower portion is an inner peripheral surface 40b having a constant inner diameter (see FIG. 9).

  A circumferential groove 42 is formed on the outer peripheral surface of each claw piece 41 in the circumferential direction. Further, when viewed from the inside in the radial direction, the portion of each claw piece 41 where the circumferential groove 42 is formed is thin and a neck portion 47 is formed, and projections 52a and 52a, which will be described later, of the guide member 52 slide on the neck portion 47. They are sandwiched freely (see FIGS. 7, 8, and 14). Further, a spring hole 42a is formed in the bottom surface of the circumferential groove 42, and a radial spring 51 is inserted into the spring hole 42a so as to be positioned.

A first stepped portion 43 as the upper upper surface is formed on the upper side of the outer peripheral surface of each claw piece 41, and a second stepped portion 44 as a lower lower surface is formed on the lower side of the outer peripheral surface. The first step portion 43 and the second step portion 44 are arranged at a predetermined distance in the axial direction of the claw piece 41.
The first step portion 43 is a portion that comes into contact with the lower end surface 110b on the inner peripheral side of the upper plate 110 when the claw body 40 is opened (see FIG. 12).
The second stepped portion 44 is a portion that comes into contact with the inner circumferential upper end surface 120b of the lower plate 120 when the claw body 40 is opened (see FIG. 13).

  Further, an arcuate locking portion 45 is formed at the lower end of each claw piece 41 in a plan view. When the claw body 40 is closed, the locking portion 45 is locked to a raised portion 62 of the annular plate 61 described later (see FIG. 11).

  Furthermore, of the three claw pieces 41, for example, on the outer peripheral surface of the two claw pieces 41, a guide groove 46 that is configured by a plurality of grooves that are parallel in a substantially horizontal direction and that guides the wire 101 is formed. Has been. The outer peripheral surface of the remaining one claw piece 41 is a smooth curved surface.

The three radial springs 51 are attached to the upper surface of the lower jig main body 30 through the guide member 52 at regular intervals (120 ° intervals) in the circumferential direction in plan view (see FIG. 8). It is guided in the radial direction by 52.
A pair of projecting portions 52 a and 52 a projecting toward the claw piece 41 side is formed at one end portion along the axial direction of the guide member 52, and the pair of projecting portions 52 a and 52 a The projections 52a and 52a sandwich the neck portion 47 of each claw piece 41 in a slidable manner. Thereby, each claw piece 41 is provided on the upper part of the lower jig body 30 via the guide member 52 so as to be slidable in the radial direction.

  On the guide member 52, a ring-shaped mounting plate 53 to which the lower plate 120 is attached is fixed. A pin 54 for positioning the mounting plate 53 and the lower plate 120 is formed on the upper surface of the mounting plate 53.

  The six thrust springs 65 are composed of, for example, compression coil springs and the like, are attached to spring holes formed on the upper surface of the lower jig main body 30, and are arranged at equal intervals (60 ° intervals) in the circumferential direction. (See FIG. 8).

As shown in FIG. 7, the annular plate 61 is disposed on the six thrust springs 65 and is uniformly supported by the six thrust springs 65. A claw body 40 is disposed on the upper surface of the annular plate 61. That is, the six thrust springs 65 urge (press) the claw body 40 upward via the annular plate 61.
A thick raised portion 62 is formed on the inner peripheral portion of the annular plate 61. And when the upper jig | tool A is not inserted in the nail | claw body 40 and the nail | claw body 40 is closed, the latching | locking part 45 of each nail | claw piece 41 contact | abuts to the protruding part 62, and comes to be latched. Yes. That is, the raised portion 62 functions as a stopper for each claw piece 41 in the radial direction when the claw body 40 is closed.

≪Assembly of upper jig and lower jig≫
Next, with reference to FIG. 9 to FIG. 14, an assembly state of the upper jig A and the lower jig B will be described.
As shown in FIG. 9, the upper plate 110 is attached to the lower surface 11 a of the attachment seat 11 of the upper jig A while aligning the pins 12 and the pin holes 113. On the other hand, the lower plate 120 is attached to the upper surface 53a of the attachment plate 53 of the lower jig B while the pins 54 and the pin holes 123 are aligned.
Then, while aligning the key 31 of the lower jig B and the key groove 17 of the upper jig A, the upper jig A is lowered by a lifting mechanism (not shown), and the insertion rod portion 15 of the upper jig A is moved. And insert it into the nail body 40.

  Thereafter, when the insertion rod portion 15 contacts the inner peripheral surface 40b of each claw piece 41, each claw piece 41 slides radially outward against the spring force of the radial spring 51, and the claw body 40 is moved. Start to open.

Further, when the taper surface 21 of the taper body 20 is lowered while coming into contact with the taper surface 40a of each claw piece 41, each claw piece 41 further slides radially outward. Next, when each claw piece 41 abuts on the inner peripheral surface 53b of the mounting plate 53 (see FIG. 11), the sliding of each claw piece 41 outward in the radial direction stops.
Here, since each claw piece 41 is urged by each thrust spring 65 via the annular plate 61, it can be evenly urged upward, and below each claw piece 41. A gap G is formed between the second stepped portion 44 on the side and the inner peripheral upper end surface 120b of the lower plate 120 (see FIGS. 9 and 10).

When the upper jig A further descends and the lower surface 61a of the annular plate 61 contacts the upper surface 30a of the lower jig body 30 as shown in FIG. 11, the lowering of the upper jig A stops.
At this time, each claw piece 41 slides downward against the urging force of each thrust spring 65 as the upper jig A descends.

  Here, on the upper side P of each claw piece 41, the inner peripheral side lower end surface 110 b of the upper plate 110 abuts on the first step portion 43 on the upper side of the claw piece 41, as shown in FIG. 12. On the other hand, on the lower side Q of each claw piece 41, the inner peripheral side upper end surface 120 b of the lower plate 120 abuts on the second step portion 44 on the lower side of the claw piece 41 as shown in FIG. 13.

  In particular, on the lower side Q, each claw piece 41 is urged upward in advance by the spring force of the thrust spring 65 to form a gap G (see FIGS. 9 and 10). After the inner peripheral upper end surface 120b of the lower plate 120 is positioned directly below the lower second stepped portion 44, the lower second stepped portion 44 contacts the inner peripheral upper end surface 120b.

As a result, for example, the outer peripheral surface of each claw piece is the inner peripheral surface 122 of the lower plate 120 (see FIG. 2 and FIG. 13) as compared with each claw piece that does not have the thrust spring 65 and slides only radially outward. ) Is prevented.
As described above, the upper jig A is assembled to the lower jig B, and the lock piece 32 of the lower jig B is engaged with the lock groove 18 to be locked.

  In this state where the upper jig A is assembled to the lower jig B, as shown in FIG. 11, the lower surface 11a of the mounting seat 11 in the upper jig A and the upper surface 53a of the mounting plate 53 in the lower jig B. Is set to a predetermined value. Further, the outer peripheral position where each claw piece 41 is enlarged in diameter, that is, the radial length D is also set to a predetermined value.

  Here, each axial height position of the first stepped portion 43 as the upper surface on the upper side and the second stepped portion 44 as the lower surface formed on each claw piece 41 is the inner peripheral side of the upper plate 110. The lower end surface 110b and the inner peripheral side upper end surface 120b of the lower plate 120 are set at positions where a compressive load is applied.

  As a result, the upper plate 110 is between the lower surface 11a of the mounting seat 11 and the first step portion 43 of each claw piece 41, and the lower plate 120 is the second step between the upper surface 53a of the mounting plate 53 and each claw piece 41. It is pinched or constrained with the portion 44 at a predetermined position.

  More specifically, the upper plate 110 is provided with a pressing force A2 that presses the upper surface of the upper plate 110 vertically downward from the lower surface 11a of the mounting seat 11 (see FIG. 11). A compressive load (pressing force A3, see FIGS. 11 and 12) is applied from the first step portion 43 to press the inner peripheral side lower end surface 110b of the upper plate 110 upward in the axial direction.

  Further, a pressing force A6 that presses the lower surface of the lower plate 120 vertically upward from the upper surface 53a of the mounting plate 53 is applied to the lower plate 120 (see FIG. 11). At the same time, the second step of each claw piece 41 is applied. A compression load (pressing force A5, see FIGS. 11 and 13) is applied from the portion 44 to press the inner peripheral upper end surface 120b of the lower plate 120 downward in the axial direction. In the radial direction, a predetermined clearance is formed between each claw piece 41 and the inner peripheral surface 122 of the lower plate 120 (see FIG. 13).

  Thus, in a state where the upper jig A and the lower jig B are assembled, the upper plate 110 and the lower plate 120 are restrained at predetermined positions with respect to the opened claw body 40, and the upper plate 110 and the lower plate Between 120, it is set to a predetermined width. In other words, since the outer peripheral surface of the claw body 40 is a core part, the upper plate 110 is an upper flange part, and the lower plate 120 is a lower flange part, the same state as a bobbin having an upper flange part and a lower flange part, That is, a virtual bobbin can be formed, and the wire 101 can be easily wound. Thus, the wire 101 is wound between the upper plate 110 and the lower plate 120, and the winding shape is not disturbed, that is, the coil 102 in which the wire 101 is aligned in the axial direction can be obtained.

≪Rewinding of wire rod≫
Subsequently, a situation in which the wire 101 is wound around the coil winding apparatus 1 in which the upper jig A and the lower jig B are assembled in this manner will be described with reference to FIGS. 14 and 15.
After the wire 101 is locked to a wire rod locking portion (not shown) of the lower jig B and the wire 101 is wound around the winding portion 125 of the lower plate 120, the lower jig B and the upper jig A are integrated. While rotating, a nozzle (not shown) for feeding the wire 101 is reciprocated in the axial direction.

  Then, the wire 101 is wound around the circumferential surface of the claw body 40 that rotates while being opened. Here, among the three claw pieces 41 constituting the claw body 40, the guide grooves 46 are formed in the outer circumferential surface of the two claw pieces 41 in the circumferential direction. The wire 101 is wound along the guide groove 46.

Moreover, since the outer peripheral surface of one claw piece 41 of the three claw pieces 41 is a smooth curved surface in which the guide groove 46 is not formed, the wound wire rod 101 has a smooth outer peripheral surface. The portion of the claw piece 41 can smoothly shift to the next row without being restrained in the axial direction.
In the winding stage of the wire 101, the axial direction is the row direction of the wire 101, and the radial direction is the step direction.

  In the folded portion of the wire 101 in the vicinity of the upper plate 110, the position of the first-stage final row of the wire 101 with respect to the lower surface of the upper plate 110 is positioned by the guide groove 46 (see FIG. 15A). As a result, the winding progresses thereafter, and when the wire 101 moves from the first stage to the second stage, the distance between the second stage first row of the wire 101 and the second stage second row of the wire 101 is increased. It can be prevented from becoming large.

  Then, the winding of the wire 101 progresses thereafter, and the wire 101 that has shifted to the third stage can be prevented from falling into the gap formed between the wire 101 and the wire 101 in the second stage (FIG. 15B). reference). As a result, the wire 101 can be accurately wound, and the winding shape of the coil 102 is less likely to be disturbed.

  Then, after winding the wire 101 in a predetermined number of stages, the wire 101 is wound around the winding portion 126 of the lower plate 120, and the wire 101 is cut using a cutter means (not shown). Then, the coil winding body 100 is obtained.

As mentioned above, although one Embodiment of this invention was described, this invention is not limited to Embodiment, For example, it can change as follows in the range which does not deviate from the meaning of this invention.
In the above-described embodiment, the claw body 40 is configured to include the three claw pieces 41, but the number of claw pieces is not limited to this, and may be two or four or more. Further, the number of radial springs 51 (first spring members) and thrust springs 65 (second spring members) may be appropriately changed.

  In the above-described embodiment, the configuration in which the second spring member is the thrust spring 65 that is a compression coil spring is exemplified. However, for example, a rubber member formed of appropriate rubber may be used. The same applies to the first spring member.

  In the above-described embodiment, the upper jig A includes the tapered body 20 and the lower jig B includes the claw body 40. However, the functions of the upper jig A and the lower jig B are reversed. The upper jig A may include the claw body 40 and the lower jig B may include the tapered body 20.

It is a perspective view of the coil winding body concerning this embodiment. It is a longitudinal cross-sectional view of the coil winding body shown in FIG. It is the top view which looked at the upper plate concerning this embodiment from the upper part. It is the top view which looked at the lower plate which concerns on this embodiment from the downward direction. It is a perspective view of the coil winding apparatus concerning this embodiment. It is a disassembled perspective view of the upper jig which concerns on this embodiment. It is an exploded perspective view of the lower jig concerning this embodiment. It is a top view of the lower jig concerning this embodiment, and a base plate is omitted. It is a longitudinal cross-sectional view which shows before inserting the upper jig | tool which concerns on this embodiment in a lower jig | tool. It is a longitudinal cross-sectional view which shows the middle in which the upper jig | tool which concerns on this embodiment is inserted in the lower jig | tool. It is a longitudinal cross-sectional view which shows after inserting the upper jig | tool which concerns on this embodiment in a lower jig | tool. It is an enlarged view of the code | symbol P part of FIG. It is an enlarged view of the code | symbol Q part of FIG. In this embodiment, it is the figure which expand | deployed the condition which has wound the wire around the nail | claw body in the circumferential direction. (A), (b) is a longitudinal cross-sectional view which shows the condition where the wire is wound around the nail | claw body which concerns on this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Coil winding apparatus A Upper jig 10 Upper jig main body 11 Mounting seat 15 Inserting rod part 20 Tapered body B Lower jig 30 Lower jig main body 40 Claw body 41 Claw piece 46 Guide groove 51 Radial spring (1st spring Element)
61 Annular plate 65 Thrust spring (second spring member)
100 Coil Winding Body 101 Wire Material 102 Coil 110 Upper Plate 120 Lower Plate

Claims (4)

A coil winding device for producing a coil winding body that includes a coil around which a wire is wound, an upper plate and a lower plate that sandwich the coil, and does not include a winding core,
An upper jig to which the upper plate is mounted;
A lower jig to which the lower plate is mounted;
Including
The upper jig and the lower jig are relatively displaceable,
The lower jig is
A cylindrical nail body having a circumferential surface around which a wire is wound, and including a plurality of claw pieces arranged in the circumferential direction and sliding in the radial direction;
A first spring member for urging each claw piece radially inward;
A second spring member for urging the claw body upward;
A coil winding apparatus comprising: The coil winding device according to claim 1, further comprising an annular plate between the claw body and the second spring member. The coil winding device according to claim 1 or 2, wherein a guide groove for guiding a wire is formed on a peripheral surface of at least one claw piece of the plurality of claw pieces. The coil winding device according to claim 3, wherein a peripheral surface of at least one claw piece among the plurality of claw pieces is a smooth curved surface.

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