JP2007067280A - Coil winding method and coil winding member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coil winding method which can wind a coil at high speed and improve a productivity. <P>SOLUTION: The inside of a first flange in a coil winding area 14a of a first flange side 11 is set as a coil winding starting point 15, and a position apart from the first flange is set as a turning point 16. A coil 5 is wound on a winding shaft 13 on a outward trip from the coil winding starting point to the coil turning point to form a first layer 17 on the coil winding area, and returning at the coil turning point, a coil is wound on the coil of the first layer on a return trip toward the coil winding starting point to form a second layer 18. Returning at the coil winding starting point, a coil is again wound on the coil of the second layer on a return trip toward the coil turning point to form a third layer 19, and such a winding is repeated, then, a first winding layer 20 composed of a plurality of coil layers is formed on the coil winding area, and a coil is wound on a coil winding area 14b adjacent to the coil winding area formed of the first winding layer from the coil winding end of the first winding layer. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a coil winding method and a coil-wound component in which a coil is wound around a winding shaft such as a trigger coil used in optical devices such as cameras and small electronic devices.

  A trigger coil used for an optical device such as a camera or a small electronic device is stored in a limited narrow space of the optical device or the small electronic device, so that it is required to be small and thin.

  The trigger coil has hooks at both ends of the winding shaft, and the coil is bang-wound around the winding shaft, and both ends of the coil are tangled with terminals protruding from the hooks and soldered. In order to bank the coil around the winding axis, the winding is performed by winding the winding axis from the inside of one hook part, folding it back on the inside of the other hook part and overlappingly winding it on the first layer coil. It is a line.

  However, in the trigger coil, the induced electromotive force acts most on the one-layer coil closest to the winding axis, and the action of this induced electromotive force gradually decreases as the distance from the winding axis becomes two or three layers, Potential differences and distributed capacitance are generated between the windings, particularly between the layers.

Therefore, in order to reduce the potential difference and the distributed capacity as described above, for example, a section in which a triangular cross-section layer is formed by a coil inside the collar by reciprocating the winding pitch on a bobbin having a collar on both ends of the winding shaft. There is known a method of winding and winding the winding pitch in a reciprocating manner so that the winding is inclined so as to be along a diagonal side of the triangular section layer (for example, see Patent Documents 1 to 6).
Japanese Patent Application Laid-Open No. 60-107813 Japanese Patent Publication No. 2-18572 Japanese Utility Model Publication No. 54-164842 Japanese Patent Laid-Open No. 2-106910 Japanese Patent Publication No. 4-15603 Japanese Patent Publication No. 7-15854

  However, each of the above-mentioned patent documents employs a slide winding method in which the winding axis inside one collar is used as a coil winding start point, and winding is performed while being inclined with respect to the central axis of the winding axis. That is, by repeating the procedure of forming the first layer by winding the coil a plurality of times in the direction away from the collar and turning back halfway, the number of turns is reduced to the third. A layer, a fourth layer, etc. are formed to form a triangular cross-section layer inside the collar portion.

This slide winding method has a problem that winding collapse is likely to occur unless the coil pitch is accurately determined, accuracy is required for traverse control, and the pitch cannot be set arbitrarily. Since the slide winding is always wound on an inclined surface, there is a problem that the winding cannot be performed at a high speed.
Also, when trying to carry out multi-layer winding by the slide winding method, the winding is likely to be disturbed, especially when the coil wire diameter is thin, winding collapse is likely to occur, and the winding speed has to be reduced. There is a problem that productivity is bad.
The present invention has been made paying attention to the above circumstances, and the object of the present invention is to wind a coil without winding a special traverse control when winding the coil around a winding shaft, and to achieve high-speed winding. It is an object of the present invention to provide a coil winding method that can be wire and can improve productivity.

  Another object of the present invention is to provide a coil-wound component that can obtain high output characteristics and can be miniaturized.

In order to solve the above-mentioned object, according to the present invention, in the first aspect, the axial direction of the winding shaft having the first flange portion at one end in the axial direction and the second flange portion at the other end is divided into a plurality of coil winding areas. A coil winding method of winding a coil sequentially from the coil winding area on the first flange side toward the coil winding area on the second flange side,
The coil winding start point is the inner side of the first flange part in the coil winding area on the first flange part side, and the position away from the first flange part is the coil folding point, from the coil winding start point to the coil folding point. The coil is wound around the winding shaft to form a first layer in the coil winding area,
A second layer is formed by folding back at the coil folding point and returning to the coil winding start point on the first layer coil.
Folding back at the coil winding start point, rewinding on the second layer coil toward the coil folding point, and winding on the second layer coil to form the third layer, Forming a first winding layer comprising a plurality of coil layers in the coil winding area;
The coil is guided from the coil winding end point in the first winding layer in the direction of the winding axis of the coil winding area adjacent to the coil winding area forming the first winding layer, and in the coil winding area. The coil winding start point is the inner side of the first winding layer, the coil turn-off point is a position away from the first winding layer, and the coil is wound around the winding shaft from the coil winding start point toward the coil turn-up point. And repeatedly forming a second winding layer similar to the first winding layer of the coil winding section in the coil winding section,
A coil winding method is characterized in that a coil is wound around the winding shaft divided into a plurality of coil winding areas.

According to a second aspect of the present invention, the axial direction of a winding shaft having a first collar portion at one end in the axial direction and a second collar portion at the other end is divided into a plurality of coil winding areas, and the coil winding on the first collar side A coil winding method of winding a coil sequentially from the section toward the coil winding section on the second flange side,
The position of the winding shaft separated from the first collar in the coil winding area on the first collar side is a coil winding start point, the inner side of the first collar is a coil return point, and the coil winding start point is the coil winding point. A coil is wound around the winding shaft toward the turning point to form a first layer in the coil winding area,
A second layer is formed by folding back at the coil folding point and returning to the coil winding start point on the first layer coil.
Folding back at the coil winding start point, rewinding on the coil of the second layer toward the coil folding point, repeating the winding on the coil of the second layer to form the third layer, Forming a first winding layer comprising a plurality of coil layers in the coil winding area;
The coil is guided from the coil winding end point in the first winding layer in the direction of the winding axis in the coil winding area adjacent to the coil winding area forming the first winding layer, and in the coil winding area. The coil winding start point is the inner side of the first winding layer, the coil turnback point is a position away from the first winding layer, and the coil is wound around the winding shaft from the coil winding start point toward the coil turnback point. And repeatedly forming a second winding layer similar to the first winding layer of the coil winding section in the coil winding section,
A coil winding method is characterized in that a coil is wound around the winding shaft divided into a plurality of coil winding sections.

  According to a third aspect of the present invention, in each of the coil winding areas according to the first or second aspect, a coil is wound around the winding shaft, and the forward winding and the backward winding are repeatedly laminated with substantially the same span, and the laminated sectional shape is substantially rectangular. It is formed in a shape.

According to a fourth aspect of the present invention, the axial direction of a winding shaft having a first flange portion at one end in the axial direction and a second flange portion at the other end is divided into a plurality of coil winding areas, and the coil winding on the first flange side A coil-wound component in which a coil is wound sequentially from the area toward the coil winding area on the second flange side,
One end side in each of the coil winding sections is a coil winding start point, and the other end side is a coil folding point, and the coil is wound around the winding axis from the coil winding starting point to the coil folding point to wind the coil. A first coil layer formed in the wire section;
A second coil layer formed by folding back at the coil folding point and returning to the coil winding start point on the first coil layer;
At least three of the third coil layer formed by winding at the coil winding start point, winding again on the second coil layer toward the coil folding point, and winding on the second coil layer. The coil wound part is characterized in that a coil layer having a layer structure is formed, and a coil winding end and a coil winding start of the coil layer in each coil winding area are connected.

  According to the present invention, when winding a coil around a winding shaft, winding can be performed without requiring special traverse control, high-speed winding is possible, and productivity can be improved. In addition, high output characteristics can be obtained and the size can be reduced.

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

  1 to 4 show a first embodiment, FIG. 1 shows a trigger coil 1 as a coil winding part, (a) is a plan view, and (b) is a side view. The trigger coil 1 is provided with a low pressure side bobbin 2, a high pressure side bobbin 3, and a square bar-shaped core 4. A coil 5 is wound around the core 4 by a winding method, which will be described later. One end of the coil 5 is soldered to the binding terminal 6 of the low-voltage side bobbin 2, and the other end is soldered to the binding terminal 7 of the high-voltage side bobbin 3. It is connected with attachment.

Next, as shown in FIG. 2, the inner wall of the low-pressure side bobbin 2 is the first flange part 11, the inner wall of the high-pressure side bobbin 3 is the second flange part 12, and the rectangular bar-shaped core 4 is the winding shaft 13. A method for winding the coil 5 around the winding shaft 13 will be described.
Here, the winding shaft 13 is, for example, a rectangular cross-sectional shape of 1.3 mm × 1.0 mm, the length (winding width) is around 4 mm, and the thickness of the coil 5 is a coated copper wire of 20 to 30 μmφ. . The winding shaft 13 between the first flange portion 11 and the second flange portion 12 has a plurality of axial directions, and in this embodiment, is divided into first to fourth coil winding sections 14a to 14d having the same width. Has been. The coil 5 is section wound around the winding shaft 13 in the order of the first to fourth coil winding sections 14a to 14d.

  As shown in FIG. 2, the coil 5 is penetrated from the outside of the first flange 11 to the inside thereof, and positioned on the winding shaft 13 inside the first flange 11 in the first coil winding section 14a. Is the coil winding start point 15. Then, the winding shaft 13 is rotated about its axis, and the coil 5 is spirally closely wound around the outer peripheral surface of the winding shaft 13 to wind toward the coil turning point 16 in the first coil winding section 14a. Then, the first layer 17 is formed in the first coil winding area 14a.

  When the forward winding reaches the coil folding point 16 of the first coil winding area 14a, the spiral winding toward the first flange portion 11 is performed on the coil 5 of the first layer 17 folded at the coil folding point 16 and wound forward. Wind the return route closely. When the second layer 18 formed by the return winding reaches the coil winding start point 15, the second layer 18 is turned back here, and is wound again on the coil 5 of the second layer 18 toward the coil turning point 16, and the second layer 18 is wound. The third layer 19 is formed by winding on the 18 coils 5.

  As described above, the forward winding and the backward winding are repeated with substantially the same span between the coil winding start point 15 and the coil turn-back point 16 in the first coil winding zone 14a, whereby the first coil winding zone 14a. The first winding layer 20 having a substantially rectangular cross-sectional shape composed of a plurality of coil layers by section winding is formed. In the present embodiment, this is a case where the first winding layer 20 composed of seven (odd number) coil layers is formed in the first coil winding section 14 a, and the coil winding end point in the first winding layer 20. 21 is on the second coil winding section 14b side (the position farthest from the first flange 11).

  Next, the coil 5 is guided from the coil winding end point 21 in the first winding layer 20 toward the winding axis 13 of the second coil winding section 14b, and the first winding layer 20 in the second coil winding section 14b. The coil winding start point 22 is defined as the inside. Then, the position away from the first winding layer 20 is set as a coil turning point 23, and the coil 5 is wound around the winding shaft 13 from the coil winding start point 22 toward the coil turning point 23, and the second coil winding area A second winding layer 24 similar to the first winding layer 20 of the first coil winding section 14a is formed on 14b.

In this way, the coil 5 is all section-wound around the winding shaft 13 divided into the first to fourth coil winding sections 14 a to 14 d, and the terminal of the coil 5 is connected to the binding terminal 6 of the low-voltage side bobbin 2. The trigger coil 1 is completed by connecting to the binding terminal 7 of the high voltage | pressure side bobbin 3 by soldering, respectively.
Since the length (winding width) of the winding shaft 13 in this embodiment is 4 mm and is divided into first to fourth coil winding sections 14a to 14d, the winding of each coil winding section 14a to 14d is performed. The width is 1 mm. If the number of turns in each of the coil winding sections 14a to 14d is 280 Turn, the number of turns is 280 Turn × 4 = 1120.

Thus, by winding the coil 5 in each of the coil winding sections 14a to 14d in section, the traverse control is not required to be accurate as in the conventional slide winding method. In addition, unlike the slide winding, there is no need to always wind on an inclined surface, so there is no risk of collapse and winding can be performed at high speed, thereby improving productivity.
By the way, the thickness of the coil 5 is a coated copper wire having a diameter of 20 to 30 μm, and the first winding layer 20 and the second winding layer 24 each having a substantially rectangular cross-sectional shape are wound around each coil winding section 14a to 14d. .. (Even indicated by diagonal lines) is not partitioned by a partition wall (separator) for each coil winding section 14a to 14d. Therefore, after the first layer 17 is formed on the winding shaft 13, the coil 5 of the second layer 18 is accurately placed on the coil 5 of the first layer 17 and all the coils 5 of the first winding layer 20 are aligned. It is not always done.
FIG. 3 is an enlarged view of the boundary portion between the first winding layer 20 and the second winding layer 24 (shown by diagonal lines). In the process of forming the first winding layer 20, the second layer 18 The coil 5 of the third layer 19 is collapsed at the coil turn-back point 16. That is, the coils 5 of the second layer 18 and the third layer 19 protrude beyond the coil turn-back point 16 to the second coil winding section 14 b side and are wound around the winding shaft 13.
Therefore, the first winding layer 20 has a substantially trapezoidal cross section. Then, when the coil 5 is guided from the coil winding end point 21 in the first winding layer 20 toward the winding axis 13 of the second coil winding section 14b and wound around the second coil winding section 14b, the coil 5 Is wound on the second layer 18 or the third layer 19 forming the first winding layer 20.
For this reason, even if 280 Turns are wound around the first to fourth coil winding sections 14a to 14d, the boundary portions of the coil winding sections 14a to 14d (the first winding layer 20 and the second winding). The outer peripheral surface of the boundary portion with the layer 24 has a larger winding diameter than the other portions, and the winding state becomes uneven, but the thickness of the coil 5 is a copper wire of 20 to 30 μmφ and can be ignored. is there. On the other hand, since each coil winding area 14a-14d is not partitioned by a partition wall (separator), the axial length of the core 4 is shortened, and the trigger coil can be downsized.

Table 1 shows the relationship between the winding condition (Section) and the output voltage (Vout) in the trigger coil. As a conventional product, the output voltage of the trigger coil with slide winding and the trigger coil with section winding (2Section-6Section) is shown. Shows the difference. When Table 1 is shown in a graph, it becomes as shown in FIG.
FIG. 5 shows a second embodiment, and the same components are denoted by the same reference numerals and description thereof is omitted. In the present embodiment, the coil 5 passes along the axial direction of the winding shaft 13 through the first flange portion 11, and the position of the winding shaft 13 slightly separated from the first flange portion 11, in this embodiment, the first A coil winding start point 25 is defined between the coil winding section 14a and the second coil winding section 14b, and the coil 5 is spirally wound around the winding shaft 13 toward the first flange 11. The first layer 26 is formed by winding forward.

When the forward winding reaches the first flange portion 11, the inner side of the first flange portion 11 is set as the coil folding point 27, and the coil starts to be wound on the coil 5 of the first layer 26 folded at the coil folding point 27 and wound forward. Wind toward point 25. When the second layer 28 formed by the return winding reaches the coil winding start point 25, the second layer 28 is turned back again, and section winding is performed as in the first embodiment. Although six coil layers (even number layers) are provided in each of the coil winding sections 14a to 14d, odd number layers may be used.
Moreover, in the said embodiment, although the axial direction of the winding shaft 13 between the 1st collar part 11 and the 2nd collar part 12 was divided into four coil winding area 14a-14d of the same width, it is divided into the number of divisions. It is not limited and may be a combination of different widths even if they are not the same width.
The present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Moreover, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, the constituent elements over different embodiments may be combined.

The 1st Embodiment of this invention is shown, a trigger coil is shown, (a) is a top view, (b) is a side view. Explanatory drawing which shows the same embodiment and shows a section winding method. Explanatory drawing which expands and shows the section winding method which shows the same embodiment. The characteristic view which shows the same embodiment and shows the relationship between the winding conditions (Section) and output voltage (Vout) in a trigger coil. Explanatory drawing which shows 2nd Embodiment of this invention and shows the section winding method.

Explanation of symbols

DESCRIPTION OF SYMBOLS 5 ... Coil, 11 ... 1st collar part, 12 ... 2nd collar part, 13 ... Winding axis, 14a-14d ... Coil winding area, 15 ... Coil winding start point, 16 ... Coil folding point, 17 ... 1st layer 18 ... second layer, 19 ... third layer, 20 ... first winding layer

Claims (4)

An axial direction of a winding shaft having a first collar portion at one end in the axial direction and a second collar portion at the other end is divided into a plurality of coil winding sections, and the coil winding section on the first flange side is sequentially arranged. A coil winding method for winding a coil toward a coil winding area on the second collar side,
The coil winding start point is the inner side of the first flange part in the coil winding area on the first flange part side, and the position away from the first flange part is the coil folding point, from the coil winding start point to the coil folding point. The coil is wound around the winding shaft to form a first layer in the coil winding area,
A second layer is formed by folding back at the coil folding point and returning to the coil winding start point on the first layer coil.
Folding back at the coil winding start point, rewinding on the coil of the second layer toward the coil folding point, repeating the winding on the coil of the second layer to form the third layer, Forming a first winding layer comprising a plurality of coil layers in the coil winding area;
The coil is guided from the coil winding end point in the first winding layer in the direction of the winding axis in the coil winding area adjacent to the coil winding area forming the first winding layer, and in the coil winding area. The coil winding start point is the inner side of the first winding layer, the coil turnback point is a position away from the first winding layer, and the coil is wound around the winding shaft from the coil winding start point toward the coil turnback point. And repeatedly forming a second winding layer similar to the first winding layer of the coil winding section in the coil winding section,
A coil winding method comprising winding a coil on the winding shaft divided into a plurality of coil winding sections. An axial direction of a winding shaft having a first collar portion at one end in the axial direction and a second collar portion at the other end is divided into a plurality of coil winding sections, and the coil winding section on the first flange side is sequentially arranged. A coil winding method for winding a coil toward a coil winding area on the second collar side,
The position of the winding shaft separated from the first collar in the coil winding area on the first collar side is a coil winding start point, the inner side of the first collar is a coil return point, and the coil winding start point is the coil winding point. A coil is wound around the winding shaft toward the turning point to form a first layer in the coil winding area,
A second layer is formed by folding back at the coil folding point and returning to the coil winding start point on the first layer coil.
Folding back at the coil winding start point, rewinding on the coil of the second layer toward the coil folding point, repeating the winding on the coil of the second layer to form the third layer, Forming a first winding layer comprising a plurality of coil layers in the coil winding area;
The coil is guided from the coil winding end point in the first winding layer in the direction of the winding axis in the coil winding area adjacent to the coil winding area forming the first winding layer, and in the coil winding area. The coil winding start point is the inner side of the first winding layer, the coil turnback point is a position away from the first winding layer, and the coil is wound around the winding shaft from the coil winding start point toward the coil turnback point. And repeatedly forming a second winding layer similar to the first winding layer of the coil winding section in the coil winding section,
A coil winding method comprising winding a coil on the winding shaft divided into a plurality of coil winding sections. 2. A coil according to claim 1, wherein a coil is wound around the winding axis in each of the coil winding sections, and the forward winding and the backward winding are repeatedly laminated with substantially the same span to form a laminated sectional shape in a substantially rectangular shape. Or the coil winding method of 2. An axial direction of a winding shaft having a first collar portion at one end in the axial direction and a second collar portion at the other end is divided into a plurality of coil winding sections, and the coil winding section on the first flange side is sequentially arranged. A coil-wound component in which a coil is wound toward the coil winding area on the second rib side,
One end side in each of the coil winding sections is a coil winding start point, and the other end side is a coil folding point, and the coil is wound around the winding axis from the coil winding starting point to the coil folding point to wind the coil. A first coil layer formed in the wire section;
A second coil layer formed by folding back at the coil folding point and returning to the coil winding start point on the first coil layer;
At least three of the third coil layer formed by winding at the coil winding start point, winding again on the second coil layer toward the coil folding point, and winding on the second coil layer. A coil-wound component, wherein a coil layer having a layer structure is formed, and a coil winding end and a coil winding start of the coil layer in each coil winding area are connected.

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