KR102051278B1 - Air core coil winding tool and manufacturing method of air core coil - Google Patents

Abstract

In the manufacture of air core coils it is possible to easily remove the coil from the air core coil winding tool. The core coil winding tool is an air core coil winding tool in which the core 3 is divided into two and the individual core component pieces 4 and 5 divided therein are contacted with each other, and the core core is constituted, and the surface of the core component is in contact with each other. The inclination 19 which converts the force which the coil wire 18 tightens the said core into the force of the direction which pulls out each said core component is provided.

Description

Air core coil winding tool and manufacturing method of air core coil

The present invention relates to an air core coil wire winding tool and a method for manufacturing an air core coil used in the manufacture of an air core coil.

In the manufacture of an air core coil, an air core coil manufacturing method has been proposed in which a magnetic fusion wire is wound around a core, and then the coil is self fused and fixed, and the coil fixed by self fusion is removed from the core. As a method of removing a coil from a core after winding using this air core coil manufacturing method, the method of extruding a coil to the plate which has a hole of the same shape as a core is proposed (refer patent document 1). However, it is difficult to remove the coil from the core because the force of tightening the core is applied to the core by winding the core of the self-sealing line. In order to facilitate the removal of the coil, a winding tool having a structure in which a winding core is divided into three and a slope is provided on a contact surface between the split core in the center and the split core on both the left and right sides of the split core in the center has been proposed. There is a method of shrinking the core diameter by removing the core and moving the divided cores on both the left and right sides to the center (see Patent Document 2).

Japanese Unexamined Patent Publication No. Hei 2-30107 Japanese public utility model publication small 57-078630

As described above, in the manufacture of an air core coil in which a coil is self-welded and removed from the core after winding the fusion wire to the core, the force of tightening the core of the coil wire is applied to the core by winding the coil wire in the core. It is difficult to remove from the core, and the winding tool also needs an operation of dividing the core and the winding width suppression plate and moving the core to the center to remove the coil, which takes time and facilitates the coil from the core. A measure for removing is a problem.

The present invention has been made to solve the above problems, and an object of the present invention is to make it easy to remove a coil from an air core coil winding tool in manufacturing an air core coil.

The air core coil winding tool according to the present invention is an air core coil winding tool in which the core is divided into two and the divided core components are contacted with each other to form the core core. The inclination which converts the force which tightens the said core into the force of the direction which pulls out each said core component is provided,
One of the winding core members of the divided core and one of the winding width suppressing plates corresponding to the winding core members and adjusting the coil width to a predetermined length are fixed and integrated with a stator,
The winding core restraining plate on the other side of the divided core and the other winding width suppressing plate corresponding to the other winding core member and adjusting the coil width to a predetermined length are fixed by a stator different from the stator and integrated. Become,
In each of the core component pieces and each of the winding width suppressing plate, a series of holes are provided for each of the core component and each of the winding width suppressing plate, and are fastened by a fastener penetrating the series of holes to wind the winding tool. It is maintaining the shape of.

According to the present invention, there is an air core coil winding tool in which the core is divided into two and the divided core components are contacted with each other, and the cores are constituted, and the force of the coil wires tightening the cores on the surfaces of the core components in contact with each other. Is inclined to convert each of the core components into a force in a direction to pull out, and the coil width is adjusted to a predetermined length in correspondence with one of the core components and the one core component of the divided core. One winding width suppressing plate is fixed by a stator and is integrated, and the other of the winding core member which is divided into two, and the winding core member of the other, which corresponds to the winding core component of the other, adjusts the coil width to a predetermined length. The winding width restraining plate is fixed and integrated with a stator different from the stator, and the winding core restraining piece is formed on each of the winding core restraints and the winding width restraining plate respectively. And a series of holes are provided for each of the winding width suppression plate and each of the winding width suppressing plates, and the fastening force penetrating through the series of holes maintains the shape of the winding tool. By converting in the direction perpendicular to the coil direction and moving the two core components along the inclination, a gap is created between the core and the coil, so that the coil can be easily removed from the core coil winding tool in manufacturing the core coil. have.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows Embodiment 1 of this invention, is an exploded perspective view of an example of an air core coil winding tool, and is a figure which shows the state before assembling a winding tool.
FIG. 2 is a diagram showing Embodiment 1 of the present invention, which is a cross-sectional view showing an example of a state in which a coil is wound around a winding tool to form a coil in a state after the air core coil winding tool is assembled.
FIG. 3 is a diagram showing Embodiment 1 of the present invention, which is a cross-sectional view illustrating one step of removing a coil after molding from the state of FIG. 2 from a winding tool, and is shown in a cross section different from FIG. 2.
4 is a diagram showing Embodiment 1 of the present invention, in which, after finishing winding of a coil wire by a winding machine, a step of removing the coil of the completed core from the core coil winding tool in a perspective view is illustrated.
FIG. 5 is a view showing Embodiment 4 of the present invention, (a) is a cross-sectional view showing a state after completion of assembly of the air core coil winding tool, and (b) is a coil removed from the winding tool from the state of (a). It is sectional drawing which illustrates one process to do, and is shown by the cross section different from (a).
FIG. 6 is a view showing Embodiment 5 of the present invention, which is another exploded perspective view of an air core coil winding tool, showing a state before assembling the winding tool. FIG.

Embodiment 1.

EMBODIMENT OF THE INVENTION Hereinafter, Embodiment 1 of this invention is described based on FIG. 1, FIG. 2, FIG. 3, FIG.

The winding core 3 divided into the winding width suppression plate 1 and the winding width suppression plate 2 is arrange | positioned, and this winding core 3 is the winding width suppression plate 1 and the winding width suppression plate 2 By the screws 10, 11, 12, 13, 26, and 27.

The screw 10 penetrates the through hole 31 of the winding width suppressing plate 1 in a loosely inserted state and is screwed into the screw hole 41 of the core component 5, and the screw 11 suppresses the winding width. The winding width suppressing plate 1 and the core constituent piece 5 are integrated by penetrating the through hole 33 of the plate 1 in a loosely inserted state and screwing into the screw hole 42 of the core constituent piece 5. The winding tool component 47 is then constructed.

The screw 12 penetrates the through hole 39 of the winding width suppressing plate 2 in a loosely inserted state and is screwed into the screw hole 43 of the core component 4, and the screw 13 suppresses the winding width. By penetrating the through hole 40 of the plate 2 in a loose insertion state and screwing into the screw hole 44 of the core piece 4, the winding width suppressing plate 2 and the core piece 4 are integrated. The winding tool component 48 is then constructed.

A screw 26 made of a bolt, which is a fastener, connects the through hole 32 of the winding width suppressing plate 1, the through hole 35 of the core member 5, and the through hole 37 of the core member 4. The through-hole 34 of the winding width restraining plate 1, the core structure is the screw 27 which consists of a bolt which is a fastener by screwing in the screw hole 45 of the winding width restraining plate 2, penetrating in the loose insertion state. The winding tool penetrates through the through hole 36 of the piece 5 and the through hole 38 of the core component 4 in a loosely inserted state and is screwed into the screw hole 46 of the winding width suppressing plate 2. The component piece 47 and the winding tool component piece 48 are integrated to complete the air core coil winding tool.
That is, in this way, in the state where the air core coil winding tool is completed, the holes 32, 35, 37, and 45 are the winding width suppressing plate 1, the core piece 4, the core piece 5, and the winding. It is a series of holes that span the width suppressing plate 2, and the fastener 26 penetrates through the series of holes 32, 35, 37, and 45, and the winding width suppressing plate 1 and the core component piece 4 are provided. , The core piece 5 and the winding width suppressing plate 2 are fastened, and similarly, the holes 34, 36, 38, and 46 have the winding width suppressing plate 1, the core piece 4, and the core piece (5) and a series of holes spanning the winding width suppressing plate 2, the fastener 27 passing through the series of holes 34, 36, 38, 46, the winding width suppressing plate 1, the core The constitution piece 4, the core constitution piece 5, and the winding width suppressing plate 2 are fastened, and the winding tool constitution piece 47 and the winding tool constitution piece 48 are integrated air coil winding tools.

The winding width suppressing plate 1 and the winding width suppressing plate 2 cooperate to restrain or restrict the width of the coil to a predetermined length when winding the coil wire 18 to the core 3. The relative distance between the winding width suppressing plate 1 and the winding width suppressing plate 2 is determined by the length of the winding core 3 supporting the winding width suppressing plates 1, 2. The coil wire 18 is wound around the winding core 3 by a predetermined number and is formed in a coil shape, and the coil wire 18 is distinguished from the coil wire 18.

The core 3 is a structure divided into the core components 4 and 5, and the core 3 is formed of these pairs of core components 4 and 5. The core pieces 4 and 5 are in surface contact with each other, and each of the relative contact surfaces is formed of an inclined surface 19 formed by providing an inclination at the same inclination angle on each of the core pieces 4 and 5.

The core 3 assumes the case of forming a square cylindrical coil in the example of this embodiment, and is made into the shape which becomes a square pillar by combining the two core components 4 and 5 together.

The core 3 has four corner parts 6, 7, 8, and 9 in the circumferential direction on the surface on which the coil is wound, that is, on the outer circumferential surface of the core 3. Each of the corner portions 6, 7, 8, and 9 is a circular arc having a radius of curvature of several mm.

The winding width suppressing plate 1 and the core constituent piece 4 are fixed and integrated with screws 10 and 11, which are stators, and the winding width suppressing plate 2 and the core constituent piece 5, which are stator screws ( 12 and 13) to be integrated. An integrated assembly (winding tool component 47) of these integrated winding width suppressing plate 1 and the core component 4, and an integrated assembly of the winding width suppressing plate 2 and the core component 5 (winding The tool component piece 48 is inserted from the through holes 32 and 34 of the winding width suppressing plate 1 and passes through the through holes 35, 36, 37 and 38 of the core piece pieces 4 and 5. The air core coil winding tool is a winding machine (illustrated in FIG. 2) by screws 26 and 27 made of bolts screwed into the screw holes 45 and 46 made of female threads of the winding width suppressing plate 2. Assembled in the assembled state attachable).

Through-holes 14, 28, 29, and 30 are provided in the centers of the winding width suppressing plates 1 and 2 and the core component pieces 4 and 5, respectively, and the winding machine shaft 15 passes through the through-holes ( By passing through 14, 28, 29, 30 and inserting into the bobbin fixing tool 16, the air core coil winding tool of the present invention is fixed to the winding machine.

The screws 10 to 13, 26, 27 need to be provided at a position away from the central axis of the winding core to avoid the winding machine shaft 15, but the screws 26, 27 hold the two winding cores 3 to suppress the winding width. In order to hold the shape of a tool through the board | plates 1 and 2, it is preferable to arrange | position it in the symmetrical position from the center axis of a core. Moreover, it is necessary to be a screw which can be fastened with sufficient force about the coil wire acting to push a winding core by winding, and the two winding cores move along a slope. The screws 10 to 13 need to be disposed at positions avoiding the screws 26 and 27 and the winding machine shaft 15, but are for fastening the winding width suppressing plates 1 and 2 and the core 3, respectively. It is preferable to fix at two or more places. Moreover, when a positioning mechanism is provided, the position shift by disassembly and assembly of a tool is prevented, and there exists an effect which prevents coiling disorder of a coil.

According to this mechanism, after winding the coil wire 18 to the core, the two core components 4 and 5 can be moved along the inclined surface 19. Since the coil wire 18 needs to be wound while tensioning the coil wire 18 during winding, a force is applied to the coil wire 18 to tighten the core, but by the inclined surfaces 19 of the core pieces 4 and 5, Part of the tightening force is converted into a force perpendicular to the coil direction and can easily move the two cores in a relatively distant direction. By moving the core component pieces 4 and 5 along the inclined surface 19 in the direction perpendicular to the coil direction, the dimension of the core core contracts, and a gap 20 can be provided between the coil inner side and the core core after winding. . Therefore, the coil 49 to which the tightening force is applied after winding can be easily removed. This tool is a mechanism independent of the winding machine, and since the mechanism for facilitating removal of the coil 49 has a structure that can be realized only by the tool, there is an advantage that no driving force is required.

After winding the coil wire on the winding tool with a winding machine to form a coil on the winding tool (see Fig. 4 (a)), as shown in Fig. 4 (b), the bobbin fixing tool 16 is removed to form a coil. The winding tool is pulled out from the winding machine shaft 15 (see Fig. 4 (c)), and then the screws 26 and 27 are loosened, and the winding tool component is pulled by the force of the coil wire tightening the winding core 3 at the time of winding. (47) (unified assembly consisting of winding width suppressing plate 1, winding core piece 5, screws 10, 11), and winding tool component piece 48 (winding width suppressing plate 2, winding structure The integral assembly consisting of the piece 4 and the screws 12 and 13 is pushed together, and an internal stress acts in a direction perpendicular to the inclined plane and in a direction along the inclined plane. At this time, the internal stress in the vertical direction with respect to the inclined surface is canceled in the core components 4 and 5, but the internal stress in the direction along the inclination is converted into a force for moving the core components 4 and 5 along the inclination. When the tightening force by the winding is F and the angle of inclination is θ, the force that the core members 4 and 5 try to move along the inclined surface is represented by Fsinθ, and the core components 4 and 5 are inclined along the slope. The state of FIG. 3 (the winding core moves in the direction away from each other along the centerline of the through-hole 14) by relatively moving in the direction which automatically reduces the diameter of the winding core 3 by moving. In the state of the previous stage for removing the winding width restraining plate 2 and the core constituent piece 5 so that the coil can be removed, and being wound from the winding tool for removing the coil 49. Pulling the core and shrinking the core diameter are performed during the same operation.

After removing the screws 26 and 27, the winding tool component 47 is first removed as illustrated in FIG. 4 (d), and then the coil 49 of the air core is illustrated as illustrated in FIG. 4 (e). ) Is removed from winding tool piece 48.

Moreover, since the structure of the winding tool of this embodiment can implement | achieve the mechanism which shrinks a core in order to make it easy to remove a core, only the shape of a core core can provide mechanisms, such as a spring which contracts a core in a core. no need. The winding tool of the present embodiment can be applied to a coil of small diameter in which the volume of the core is small and the mechanism for shrinking the core can not be provided inside the core, and the coil can be easily removed without selecting the size or shape of the core. It has an effect.

Since it is not necessary to remove the screws 10, 11, 12, 13 when removing the coil, the screws 10, 11, 12, 13, winding width suppressing plates 1, 2, and the core piece 4, It is not necessary to make the structure 5) relatively movable, and even a single body can shrink the core diameter. Although many of the structures for shrinking the core diameter need to provide a mechanism such as making the through hole of the screw a long hole in order to move the core component and the winding width restraining plate relatively, the tool of the present invention arranges the screw. It can also be applied to coils with small cross-sectional areas of winding cores that cannot be made.

Moreover, the recessed part 22, 23 of the same shape as the core 3 is provided in the surface which contact | connects the core components 4 and 5 of the winding width suppressing plate 1 and 2. As shown in FIG. When the core pieces 4 and 5 are combined so that the inclined surfaces are in contact with each other, the gap with the wall surfaces 21 and 22 of the recesses 22 and 23 of the winding width suppressing plates 1 and 2 is filled, thereby forming the core pieces. The core shape is suppressed by the pieces 4 and 5 coming into contact with the wall surfaces 24 and 25 of the recesses 22 and 23 of the winding width suppressing plates 1 and 2. According to such a structure, the core components 4 and 5 are positioned by touching the wall surface of the recessed portion, thereby facilitating positioning. Moreover, when removing the coil after winding, the diameter of the core 3 can be shrunk by removing the screws 26 and 27, and there exists an effect which makes assembly work easy. Moreover, since the position of a core component does not change by granulation, and the same core shape can be formed, it has an effect which makes the influence to winding small and stabilizes winding.

Moreover, the winding core 3 which provided the inclination and divided | divided into two can be combined together without a clearance by matching inclined surface. In the manufacture of the air core coil, it is necessary to apply heat to melt the self-melting layer of the self-fusion welding wire and fix the coil after winding the self-sealing wire around the core, but in order to close the wound coil wire, it may be pressurized from the outside. . If the core is divided without providing the inclination and the gaps are provided and combined, the coil wires inside the coils enter the gap between the cores when the coils are pressed from the outside, and the coils are deformed. At this time, damage to the coil wire of the core is caused.

The start and end of the inclination dividing the core 3 need to be provided on the surface where the core 3 is in contact with the winding width suppressing plates 1 and 2. Although the drawing provided the inclination in the short side of a coil as an example, it does not provide the inclination in the surface which needs to ensure insulation inside a coil according to a use, and sets it as the structure which inclines in the side in which insulation is not required. It is preferable.

According to the structure of the winding tool of this embodiment, since a gap does not arise between two winding cores, after winding a coil wire, even if it pressurizes from the outside for self fusion, a coil wire does not enter a clearance gap of a winding core, Coils without deformation can be produced.

According to the first embodiment, in the winding tool for manufacturing the air core coil, in order to facilitate the removal of the coil, the coil wire is wound by dividing the core into two and providing an inclination on the surface where the two cores contact each other. Since the tightening force of the core is converted into a force in the direction of pulling the core, the tightening force applied to the core by winding can be converted into a force that contracts the core, so that the coil can be easily removed. Moreover, since it can form without providing a space | interval between winding cores, the deformation | transformation of a coil by the coil wire being pinched in a space | interval can be prevented.

In addition, since the winding width suppressing plates 1 and 2 have an intaglio having the same shape as the core, positioning of the core becomes easy and the tool can be easily assembled.

As described above, in the air core coil winding tool according to the first embodiment, the core 3 is formed by contacting each of the core components 4 and 5 in which the core 3 is divided into two and divided. It is an air core coil winding tool, and the force F which the coil wire 18 tightens the said core 3 to the surface which mutually contacts the said core component 4, 5 carries out each said core component 4,5. An inclined surface 19 is provided which converts the force in the pulling direction to tighten each of the core components 4, 5 in the direction opposite to the force in the pulling direction. The winding core member (26, 27) is provided, the screw (fastening member) 26, 27 is released, and the coil core 18 is tightened by the force of tightening the winding core 3, thereby forming the winding core piece. Each of (4, 5) moves in the drawing direction (the direction in which each of the core components 4, 5 falls relatively).

Embodiment 2.

In addition, although the winding of a square coil was assumed in FIG. 1, the winding of a square shape was shown, but the shape of the winding may not be square. Even in the shape of cores other than squares, by tightening the cores by dividing the cores into two, and assembling the cores in contact with the inclined surface, the tightening force applied to the cores by winding can be converted into a force perpendicular to the coil direction. This makes it easier to move the core along the slope.

According to this structure, there exists an advantage that the structure which shrinks a core is applicable to various core shapes.

Embodiment 3.

Moreover, the winding core of this winding tool may manufacture a metal material as a raw material. After the core coil is wound around the core with a fusion line, it is necessary to heat it to melt the fusion layer to bond the coil lines together. At this time, although the coil and the core are thermally expanded, if a material having a smaller thermal expansion coefficient than that of the coil wire is used as the material of the core, the coil has a larger thermal expansion than the core and a gap is formed between the coil and the core to remove the coil after winding. There is an effect that facilitates.

Embodiment 4.

Hereinafter, Embodiment 4 of this invention is described based on FIG.

In the air core coil winding tool of the fourth embodiment, a groove is formed in the outer circumference of the core to form a coil wire, and at least one side wall of the side wall of the groove is gentler than the inclination angle of the inclination of the surface of the core constituent piece that is in contact with each other. It is characterized by being inclined at one inclination angle. Moreover, when the groove | channel for clamping a coil wire is provided in the core and the groove | channel is comprised by the inclination of two sides, at least one inclination angle is gentler than the inclination angle of the core, and the coil inserted in the groove can be removed after winding. It is a coil winding tool characterized by the structure.

You may provide the groove | channel for clamping a coil wire in the side surface 50, 51 or the corner part 6, 7, 8, 9 (refer FIG. 1) of the core part 4,5. In this case, in order to be able to remove the coil after the winding, the groove needs to be gentle inclined than the inclined surface 19 of the core component. For example, in FIGS. 5A and 5B, when the groove 523 of the shape in which the coil wire is sandwiched between the two inclined sides 52 and 53 adjacent to each other is assumed, at least the inclined 53 is It is necessary to be a straight line of the inclination angle which is equal to or slower than the inclination angle of the inclined surface 19 of the core component piece. However, the inclination angle of the inclined 52 on the opposite side may be the inclination angle of steep inclination than the inclination angle of the inclined surface 19 of the core component. That is, the shape of the side wall of the groove 523 may be asymmetrical.

According to this structure, it is difficult to shift the position of the coil by inserting the coil wire into the groove 523 of the core, it is possible to suppress the winding disturbance, and to remove the coil 49 from the core 3 after winding. have.

When the grooves 523 of the core component pieces 4 and 5 for sandwiching the coil wire have a structure in which the pitches of the grooves 523 are the same position after combining the left and right core component pieces 4 and 5, The coil which provided the cross point on the surface without inclination can be wound. After the winding core pieces 4 and 5 are combined, when the pitch of the groove 523 is in a position shifted by one pitch, the coil provided with the cross point can be wound on the inclined surface.

Embodiment 5.

Hereinafter, Embodiment 5 of this invention is described based on FIG.

In the core coil winding tool of the fourth embodiment, one core component piece is divided into a plurality of core components, and the other core component piece of the plurality of core components is mutually formed by the plurality of core component pieces. It is a wedge inserted in and in which the inclination corresponding to the inclination of the said wedge is provided in each of the said one plurality of said core components. It is characterized by the above-mentioned.

In Embodiment 1, although it was set as the winding tool of a 2 part structure, you may divide into 4 cores by the same structure. For example, as shown in FIG. 6, the core 3 is divided into four so that the inclination is provided in both a long side direction and a short side direction, and it is set as the structure which the core 3 consists of four winding frames 55, By providing the wedge 54 in which the inclination opposite to the winding frame 55 is provided in the center, when the wedge 54 is pushed in, the winding frame 55 of four corners will spread. That is, the four cores are moved to the center by arranging the warp cores in two directions by dividing them into four, maintaining the shape at the same dimension as the coil inner diameter, and pulling the wedge in the center of the cores after winding the coil. It is a coil winding tool that can remove a coil without damaging the insulation film inside the coil.

According to the winding tool of this structure, since the winding frame 55 of the core 3 moves to both the short side and the long side, a gap is formed between the core 3 and the coil 49. The coil 49 can be removed without impairing the insulation of the inner surface of the coil 49.

In addition, this invention exists in the scope of the invention, and each embodiment can be combined suitably, a deformation | transformation, and abbreviate | omitted.

In addition, in each drawing, the same code | symbol shows the same or equivalent part.

1: Winding Width Suppression Plate 2: Winding Width Suppression Plate
3: core 4, 5: core component
6, 7, 8, 9: Corner part of winding core 10, 11, 12, 13: Screw (stator)
14 through hole 15 winding machine shaft
16 bobbin fixing tool 18 coil wire
19: inclined surface of the core member 20: gap between the coil inner and the core
22, 23: recessed portion of the winding width restraining plate
24, 25: wall surface of the recessed portion of the winding width restraining plate
26, 27: screw (fastener)
28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40: through hole
41, 42, 43, 44, 45, 46: screw holes 47, 48: winding tool components
49: coil 50, 51: side of the core component
52, 53: slope of the groove 523: groove
54: wedge 55: winding frame

Claims (9)

An air core coil wire winding tool in which the core is divided into two parts and the divided core parts are brought into contact with each other to form the core.
On the surfaces in contact with each other of the core member, an inclination for converting the force of the coil wire tightening the core into a force in the direction of pulling the respective core members is provided,
One of the winding core members of the divided core and one of the winding width suppressing plates corresponding to the winding core members and adjusting the coil width to a predetermined length are fixed and integrated with a stator,
The winding core restraining plate on the other side of the divided core and the other winding width suppressing plate corresponding to the other winding core member and adjusting the coil width to a predetermined length are fixed by a stator different from the stator and integrated. Become,
In each of the core component pieces and each of the winding width suppressing plate, a series of holes are provided for each of the core component and each of the winding width suppressing plate, and are fastened by a fastener penetrating the series of holes to wind the winding tool. Air core coil winding tool, characterized in that to maintain the shape of.
The method of claim 1,
Under the relaxed state of the fastener, an air core coil winding tool, characterized in that each of the core components is movable in the pulling direction.
The method according to claim 1 or 2,
And the coil wire is a self-fusion line, and the coefficient of thermal expansion of the core is smaller than the coefficient of thermal expansion of the coil wire.
The method according to claim 1 or 2,
A groove for fitting a coil wire is formed on the outer circumference of the winding core, and at least one side wall of the side wall of the groove is inclined at a gentle inclination angle than the inclination angle of the inclination.
Each winding core is divided into two cores and the winding width restraining plate which suppresses the coil width is integrated by bolting,
On the surfaces in which the cores are brought into contact with each other and the cores are in contact with each other, the inclination is provided for converting the force that the coil wire tightens the cores into a force in the direction in which the respective cores are pulled out. ,
An air core coil having fasteners for tightening each of the core components in a direction opposite to the force in the pulling direction, wherein each of the core components is movable in the pulling direction under the relaxed state of the fastener; An air core coil manufacturing method of manufacturing an air core coil using a winding tool,
The coil wire is wound around the core formed by inserting and fastening the fastener so as to pass through a series of holes provided over each of the core components, and combining the two divided core components so as not to have a gap therebetween. Form an air core coil,
After the air core coil is formed, the fastener is released and each of the core component pieces of the core is moved in the drawing direction, and then the fasteners penetrating the series of holes of the respective core components are removed to remove the air core coil. A method for manufacturing an air core coil, which is removed from the core.
The method of claim 5,
In the case where the fastener penetrating the series of holes provided over each of the core components is removed, one of the core component pieces integrated with one of the winding width suppressing plates and the winding width suppressing plate of the other is integrated. And the other core piece is separated and the core coil is removed from the core.
The method according to claim 5 or 6,
And said coil wire is a self-sealing wire and is removed from said core after self-sealing said air core coil. delete delete

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