Coil arrangement

Abstract

The coil device (1) has: a main bobbin (40), an auxiliary bobbin (60) disposed at a first end on one side along the axis of the main bobbin, and a first core (10) disposed between the first end of the main bobbin and the first end of the auxiliary bobbin. A continuous wire (90) is wound around the main bobbin (40) and the auxiliary bobbin (60). A connecting portion (43, 63) including a portion through which a middle portion (93) of the wire passes is disposed on a portion of the circumference of the first end of the main bobbin. In a state in which the wire is continuously wound around the main bobbin (40) and the auxiliary bobbin (60), the auxiliary bobbin (60) is configured to rotate relative to the main bobbin (40) with a portion of the middle portion (93) of the wire or the connecting portion (43, 63) as a rotation fulcrum, open an insertion hole of the main bobbin (40), and a leg portion (11) of the first core is capable of being inserted into the insertion hole.

Description

[0001] This application was filed on [date]. June 29, 2022 Application number is 202210748453.7 The invention is named coil assembly Place A divisional application of the patent application. Technical Field

[0002] The present invention relates to a coil device capable of arranging multiple cores along an axis. Background Technology

[0003] Patent document 1 disclosed below discloses a winding coil device in which three cores are arranged along the axis.

[0004] However, in the coil device shown in Patent Document 1, the spools with three cores arranged in series for winding the wire are completely divided into at least two parts. Therefore, it is necessary to wind a separate wire onto each spool, install the corresponding core onto each spool, and then combine the spools and cores, connecting the ends of the wires wound on each spool to each other on the outside of the cores.

[0005] In addition, the ends of the windings wound on each spool form a spool structure that cannot be connected after the core is installed, making the assembly of the coil device difficult and reducing its reliability.

[0006] Existing technical documents

[0007] Patent documents

[0008] Patent Document 1: Japanese Patent Application Publication No. 2012-54549 Summary of the Invention

[0009] The problem that the invention aims to solve

[0010] The present invention was developed in view of this actual situation, and its purpose is to provide a coil device that is easy to assemble and has excellent reliability even when it has multiple cores.

[0011] Technical solutions for solving the problem

[0012] To achieve the above objectives, the present invention provides a coil device comprising:

[0013] Main spindle;

[0014] An auxiliary spool, which is disposed at one end of a first portion along the axis of the main spool; and

[0015] The first core is disposed between the first end of the main spool and the first end of the auxiliary spool.

[0016] In the coil device

[0017] A continuous winding is wound on the main core portion of the main spool and the auxiliary core portion of the auxiliary spool.

[0018] A connecting portion is formed between the main spool and the auxiliary spool, including the portion through which the winding passes.

[0019] The connecting portion is disposed on a portion of the circumference of the first end of the main shaft.

[0020] With the main winding core and the auxiliary winding core continuously wound with the winding, the auxiliary spool is configured to rotate relative to the main spool, with the middle part of the winding or a part of the connecting part as the pivot point, and the insertion hole of the main winding core is opened, so that the foot of the first core can be inserted into the insertion hole.

[0021] In the coil device of the present invention, a connecting portion including the portion through which the winding passes is formed between the main spool and the auxiliary spool, and the connecting portion is disposed on a portion of the first end of the main spool in the circumferential direction. Therefore, in the coil device of the present invention, with the winding portion or a portion of the connecting portion as the pivot point, the auxiliary spool rotates relative to the main spool, opening the insertion hole of the main winding core, and the foot of the first core can be inserted into the insertion hole. As a result, after continuously winding a winding onto the main spool and the auxiliary spool, rotating the auxiliary spool relative to the main spool opens the insertion hole of the main winding core, allowing the foot of the first core to be inserted into the insertion hole.

[0022] After inserting the foot of the first core into the insertion hole, rotating the auxiliary spool in the opposite direction to the main spool allows the base of the first core to be clamped between the first end of the main spool and the first end of the auxiliary spool. Then, a second core can be installed onto the second end of the main spool, located opposite to the first end, and a third core can be installed onto the second end of the auxiliary spool, opposite to the first end, either before or simultaneously. The multiple cores, consisting of the first, second, and third cores, can be arranged to form a magnetic circuit along the spool core.

[0023] Thus, in the coil device of the present invention, even if the coil device has multiple cores, it is not necessary to connect the ends of the windings to each other after the cores are installed. The assembly of the coil device is extremely easy and the reliability of the coil device is improved.

[0024] Preferably, the connecting portion has:

[0025] A main shaft connecting portion, which is formed in the circumferential direction of a first main shaft flange at the first end of the main shaft; and

[0026] An auxiliary spool connecting portion is formed in the circumferential direction of a first auxiliary spool flange present at the first end of the auxiliary spool.

[0027] The main spindle connection and the auxiliary spindle connection can be configured to be separable, or they can be integrally formed and rotatably connected relative to each other via a thin-walled portion of a pivot point.

[0028] Preferably, the main spool connecting portion and the auxiliary spool connecting portion have connecting grooves formed at corresponding positions for the intermediate portion of the winding to pass through. Through these connecting grooves, a single winding can be used to continuously wind the winding in both the main core and the auxiliary core.

[0029] The connecting part may also have a combination of a detachable and rotatable pivot pin and a pivot support. When the main spool connecting part and the auxiliary spool connecting part are configured to be separable, the main spool connecting part can have either a pivot pin or a pivot support, while the auxiliary spool connecting part can have the other. With this configuration, the auxiliary spool can be rotated relative to the main spool using the pivot pin as a fulcrum, opening the insertion hole of the main core and inserting the foot of the first core into the insertion hole.

[0030] The connecting portion can also be formed by the intermediate portion of the winding itself, preferably disposed on a portion of the circumference of the first end of the main shaft. That is, the intermediate portion of the winding itself becomes the connecting portion, and the main shaft and the auxiliary shaft can be rotatably connected through the intermediate portion of the winding itself. In this case, the intermediate portion of the winding itself becomes the pivot point.

[0031] However, when the main spool and the auxiliary spool are rotatably connected via the winding section itself, it is preferable to use a clamp for temporarily fixing the auxiliary spool to the main spool during the winding operation. Alternatively, it is preferable that the main spool and / or the auxiliary spool have a fitting portion for temporarily fixing the main spool and the auxiliary spool.

[0032] For example, the connecting portion may also have a combination of a detachable and engageable fulcrum-side engaging protrusion and a fulcrum-side engaging recess. Alternatively, along a vertical axis perpendicular to the spindle core of the main spindle, a combination of a detachable and engageable anti-fulcrum-side engaging protrusion and an anti-fulcrum-side engaging recess may be provided between the main spindle and the auxiliary spindle on the opposite side of the connecting portion.

[0033] The coil assembly may also have a secondary auxiliary spool disposed at a second end of the main spool along the core of the secondary auxiliary spool. Alternatively, a separate continuous winding, different from the main winding, may be wound on the main core portion of the main spool and the secondary auxiliary spool. Furthermore, another connection portion, including the portion through which the intermediate part of the other winding passes, may be formed between the main spool and the secondary auxiliary spool.

[0034] Preferably, the other connecting portion is disposed on a portion of the circumference of the second end of the main spool. Furthermore, preferably, with the other winding continuously wound around the main core and the auxiliary core, the auxiliary spool rotates relative to the main spool, using the middle portion of the other winding or a portion of the other connecting portion as a pivot point. With this configuration, the insertion hole of the main core can be opened, allowing the leg of the second core, different from the first core, to be inserted into the insertion hole.

[0035] The other connection between the main spool and the auxiliary spool can adopt the same structure as the connection between the main spool and the auxiliary spool, and achieve the same effect.

[0036] After inserting, for example, the foot of the second core into the insertion hole, it can be rotated relative to the main wire axis in a closing direction opposite to the direction of opening the auxiliary spool, clamping the base of the second core between the second end of the main spool and the second end of the auxiliary spool. Simultaneously or before this, as described above, the first core can be installed between the main spool and the auxiliary spool. Furthermore, a third core can then be installed at the second end of the auxiliary spool, opposite to the first end, and a fourth core can be installed before and after this at the outer end of the auxiliary spool. The multiple cores, consisting of the first, second, third, and fourth cores, can be arranged in a manner that forms a magnetic circuit along the spool core. Attached Figure Description

[0037] Figure 1 This is an overall perspective view of a coil device according to an embodiment of the present invention.

[0038] Figure 2 yes Figure 1 An exploded perspective view of the coil assembly shown (with the auxiliary coil open relative to the main coil).

[0039] Figure 3A yes Figure 1 A top view of the coil assembly shown.

[0040] Figure 3B yes Figure 3A A top view of another embodiment of the coil device shown.

[0041] Figure 4A yes Figure 1 The diagram shows a cross-sectional view of the coil assembly with the IVA-IVA line.

[0042] Figure 4B yes Figure 4A A cross-sectional view of another embodiment of the coil device shown.

[0043] Figure 5 yes Figure 1 The coil device shown is a cross-sectional view of the VV line.

[0044] Figure 6 yes Figure 2 An exploded perspective view of the main and auxiliary spindles of the coil assembly shown.

[0045] Figure 7 yes Figure 6 An exploded perspective view of the main and auxiliary spindles of the coil assembly shown, viewed from another direction.

[0046] Figure 8A yes Figure 2 A side view of a portion of the coil assembly shown (with the auxiliary spool open relative to the main spool).

[0047] Figure 8B yes Figure 8A A side view of a portion of yet another embodiment of the coil device shown (with the auxiliary spool open relative to the main spool).

[0048] Figure 9 yes Figure 2 A perspective view of a portion of the coil assembly shown (with the auxiliary spool open relative to the main spool). Detailed Implementation

[0049] The present invention will now be described based on the embodiments shown in the accompanying drawings.

[0050] First Implementation Method

[0051] like Figure 1 As shown, the coil device 1 of the present invention is used, for example, as a vehicle-mounted charging transformer, a charging station transformer, or an ESS (Energy Storage System). Figure 2 As shown, the coil device 1 includes: a main spool 40, an auxiliary spool 60, a first core 10, a second core 20, a third core 30, a first winding 80, and a second winding 90. The first winding 80 and the second winding 90 are wound on the main spool 40, and the second winding 90 is wound on the auxiliary spool 60. Furthermore, in the accompanying drawings, the X-axis, Y-axis, and Z-axis are orthogonal to each other. In this embodiment, the directions away from the center of the coil device 1 with respect to the X-axis, Y-axis, and Z-axis are sometimes referred to as the outer side, and the directions closer to the center are sometimes referred to as the inner side.

[0052] like Figure 1 As shown, the main spool 40 and the auxiliary spool 60 are arranged along the X-axis. The first core 10 is disposed between one end of the main spool 40 along the X-axis and one end of the auxiliary spool 60 along the X-axis. The second core 20 is disposed at the other end of the main spool 40 along the X-axis. The third core 30 is disposed at the other end of the auxiliary spool 60 along the X-axis.

[0053] like Figure 2As shown, in this embodiment, the first core 10 has a shape symmetrical along the Z-axis and Y-axis. The first core 10 has a first base 13. The first base 13 has first outer legs 12, 12 protruding along the X-axis on both sides along the Y-axis. In addition, the first base 13 has a first insertion leg (middle leg) 11 protruding along the X-axis approximately in the middle of the first outer legs 12, 12. That is, the first core 10 is a so-called E-type core. Furthermore, the first core 10 is not limited to an E-type core, and may also be a U-type core, or may be in the form of... Figure 2 The double-dotted line combination shown represents two U-shaped cores.

[0054] like Figure 2 As shown, the first base 13 has a predetermined thickness in the X-axis direction and has a surface parallel to the YZ plane. The first base 13 has inclined surfaces above and below the Z-axis, extending from the ends of the first outer legs 12, 12 connected together toward the center of the Y-axis of the first base 13.

[0055] like Figure 2 As shown, the outer surfaces of the first outer legs 12, 12 along the Y-axis are planar. On the other hand, the inner surfaces of the first outer legs 12, 12 along the Y-axis are curved. Furthermore, the end faces of the first outer legs 12, 12 in the Z-axis direction are planes perpendicular to the Z-axis. In addition, the shape of the inner surfaces of the first outer legs 12, 12 is not limited, but preferably corresponds to the shape of the surface of the first main axis flange 42 of the main axis 40 perpendicular to the X-axis.

[0056] like Figure 2 As shown, the first insertion foot 11 has an outer periphery parallel to the X-axis. The cross-section of the first insertion foot 11 perpendicular to the X-axis forms a generally rounded quadrilateral shape, which corresponds to the shape of the main spindle insertion hole 51 of the main spindle 40.

[0057] like Figure 5 As shown, the X-axis end face of the first insertion foot 11 is formed to be on the same plane as the X-axis end faces of the first outer feet 12, 12. However, the position of the X-axis end face of the first insertion foot 11 is not limited to this. For example, the X-axis end face of the first insertion foot 11 may be formed closer to the first base 13 than the X-axis end faces of the first outer feet 12, 12, creating a step between it and the X-axis end faces of the first outer feet 12, 12.

[0058] like Figure 2As shown, in this embodiment, the second core 20 has a shape symmetrical along the Z-axis and Y-axis. The second core 20 has a second base 23. The second base 23 has second outer legs 22, 22 protruding along the X-axis on both sides along the Y-axis. Furthermore, the second base 23 has a second insertion leg (middle leg) 21 protruding along the X-axis approximately in the middle of the second outer legs 22, 22. That is, the second core 20 is a so-called E-type core. However, the second core 20 is not limited to an E-type core; it can also be a U-type core, or... Figure 2 The double-dotted line shown combines two U-shaped cores.

[0059] like Figure 2 As shown, the second base 23 has a predetermined thickness in the X-axis direction and has a surface parallel to the YZ plane. The second base 23 has inclined surfaces above and below the Z-axis, extending from the ends of the second outer legs 22, 22 connected together toward the center of the Y-axis of the second base 23.

[0060] like Figure 2 As shown, the outer surfaces of the second outer legs 22, 22 along the Y-axis are planar. On the other hand, the inner surfaces of the second outer legs 22, 22 along the Y-axis are curved. Furthermore, the end faces of the second outer legs 22, 22 in the Z-axis direction are planes perpendicular to the Z-axis. In addition, the shape of the inner surfaces of the second outer legs 22, 22 is not limited, but preferably corresponds to the shape of the surface of the second main axis flange 52 of the main axis 40 perpendicular to the X-axis.

[0061] like Figure 2 As shown, the second insertion foot 21 has an outer periphery parallel to the X-axis. The cross-section of the second insertion foot 21 perpendicular to the Z-axis forms a generally rounded quadrilateral shape, which corresponds to the shape of the main spindle insertion hole 51 of the main spindle 40.

[0062] like Figure 5 As shown, the X-axis end face of the second insertion leg 21 is formed to be on the same plane as the X-axis end faces of the second outer legs 22, 22. However, the position of the X-axis end face of the second insertion leg 21 is not limited to this. For example, the X-axis end face of the second insertion leg 21 may be formed closer to the second base 23 than the X-axis end faces of the second outer legs 22, 22, creating a step between it and the X-axis end faces of the second outer legs 22, 22.

[0063] like Figure 5As shown, the X-axis end face of the second insertion leg 21 contacts the X-axis end face of the first insertion leg 11, and the X-axis end faces of the second outer legs 22, 22 contact the X-axis end faces of the first outer legs 12, 12, but this is not a limitation. The X-axis lengths of the first insertion leg 11, the second insertion leg 21, the first outer legs 12, 12, and the second outer legs 22, 22 can also be adjusted to create gaps on their respective X-axis end faces.

[0064] like Figure 2 As shown, in this embodiment, the third core 30 has a shape symmetrical along the Z-axis and Y-axis. The third core 30 has a third base 33. The third base 33 has third outer legs 32, 32 protruding along the X-axis on both sides along the Y-axis. In addition, the third base 33 has a third insertion leg (middle leg) 31 protruding along the X-axis approximately in the middle of the third outer legs 32, 32. That is, the third core 30 is a so-called E-type core. Furthermore, the third core 30 is not limited to an E-type core, and may also be a U-type core, or may be in the form of... Figure 2 The double-dotted line combination shown represents two U-shaped cores.

[0065] like Figure 2 As shown, the third base 33 has a specified thickness in the X-axis direction and has a surface parallel to the YZ plane. The third base 33 has inclined surfaces above and below the Z-axis, extending from the ends of the third outer legs 32, 32 connected together toward the center of the Y-axis of the third base 33.

[0066] like Figure 2 As shown, the outer surfaces of the third outer legs 32, 32 along the Y-axis are planar. On the other hand, the inner surfaces of the third outer legs 32, 32 along the Y-axis are curved. Furthermore, the end faces of the third outer legs 32, 32 in the Z-axis direction are planes perpendicular to the Z-axis. In addition, the shape of the inner surfaces of the third outer legs 32, 32 is not limited, but is preferably a shape corresponding to the shape of the surface of the first auxiliary line shaft flange 72 of the auxiliary line shaft 60 perpendicular to the X-axis.

[0067] like Figure 2 As shown, the third insertion foot 31 has an outer periphery parallel to the X-axis. The cross-section of the third insertion foot 31 perpendicular to the X-axis forms a generally rounded quadrilateral shape, which corresponds to the shape of the auxiliary spool insertion hole 71 of the auxiliary spool 60.

[0068] like Figure 5As shown, the Z-axis end face of the third insertion leg 31 is formed to be on the same plane as the X-axis end face of the third outer legs 32, 32. However, the position of the X-axis end face of the third insertion leg 31 is not limited to this. For example, the X-axis end face of the third insertion leg 31 may be formed closer to the third base 33 than the X-axis end faces of the third outer legs 32, 32, creating a step between it and the X-axis end faces of the third outer legs 32, 32.

[0069] like Figure 5 As shown, the X-axis end face of the third insertion leg 31 and the X-axis end faces of the second outer legs 22, 22 are in contact with the first base 13, but this is not a limitation. The X-axis lengths of the third insertion leg 31 and the third outer legs 32, 32 can also be adjusted to form a gap on their respective X-axis end faces.

[0070] like Figure 6 As shown, the main spool 40 has a main spool body 50 (main winding core) extending along the X-axis. A main spool insertion hole 51 is formed on the main spool body 50 along the X-axis. Furthermore, the main spool 40 has a first main spool flange 42 at one end of the main spool body 50 in the X-axis direction and a second main spool flange 52 at the other end.

[0071] A main shaft connecting portion 43, which connects to the auxiliary shaft 60, is formed on the upper part of the first main shaft flange 42 along the Z-axis. Conical surfaces 43a, 43a inclined towards the center of the Y-axis are formed on the lower part of the main shaft connecting portion 43 along the Z-axis. The conical surfaces 43a, 43a are formed to... Figure 2 The first base 13 of the first core 10 shown is in contact with the inclined surface above the Z-axis. In addition, the main spool connecting portion 43 has an R-shaped curved surface from the surface on the auxiliary spool 60 side along the X-axis to the surface above the Z-axis.

[0072] like Figure 6 As shown, a main spindle connecting groove 45 is formed approximately at the center of the Y-axis of the main spindle connecting portion 43. The main spindle connecting groove 45 is cut out along the upper part of the Z-axis, and the bottom surface of the main spindle connecting groove 45 is approximately the same plane as the upper surface of the main spindle body 50 along the Z-axis.

[0073] like Figure 6 As shown, on the end face of the main shaft connecting part 43 along the X-axis on the side of the auxiliary shaft 60, a pair of main shaft side fitting parts 46a and 46b are formed along the Y-axis, clamping the main shaft connecting groove 45. The main shaft side fitting parts 46a and 46b are recessed in the X-axis direction.

[0074] like Figure 6As shown, fulcrum support portions 47a and 47b are formed at both ends of the main axis connection portion 43 along the Y-axis. The fulcrum support portions 47a and 47b protrude along the X-axis towards the auxiliary axis 60. The fulcrum support portions 47a and 47b have a retaining function... Figure 7 The holes for the pivot pins 67a and 67b are shown.

[0075] like Figure 6 As shown, a first main axis convex portion 44 is formed on the lower part of the first main axis flange 42 along the Z-axis, which contacts the first auxiliary axis flange 62 of the auxiliary axis 60. Conical surfaces 44a, 44a inclined towards the center of the Y-axis are formed on the upper part of the first main axis convex portion 44 along the Z-axis. The conical surfaces 44a, 44a are formed to... Figure 2 The first base 13 of the first core 10 shown is in contact with the inclined surface below the Z-axis.

[0076] like Figure 6 As shown, a main shaft-side fitting portion 46c is formed on the end face of the first main shaft convex portion 44 on the side of the auxiliary shaft 60 along the X-axis. The main shaft-side fitting portion 46c is disposed in the center along the Y-axis and is recessed in the X-axis direction.

[0077] like Figure 7 As shown, a lead wire guide plate 53 is formed above the second main axis flange 52 along the Z-axis. Below the lead wire guide plate 53 along the Z-axis, tapered surfaces 53a and 53a inclined towards the center of the Y-axis are formed. The tapered surfaces 53a and 53a are formed in accordance with… Figure 2 The second base 23 of the second core 20 shown is in contact with the inclined surface above the Z-axis.

[0078] On the lead lead plate 53, lead grooves 55a to 55d extending along the X-axis are arranged along the Y-axis. The lead grooves 55a to 55d are cut above the Z-axis, and the bottom surface of the lead grooves 55a to 55d is positioned higher than the upper surface of the main spindle body 50 along the Z-axis.

[0079] like Figure 7 As shown, a second main axis convex portion 54 is formed at the lower part of the second main axis flange 52 along the Z-axis. Conical surfaces 54a, 54a inclined towards the center of the Y-axis are formed above the second main axis convex portion 54 along the Z-axis. The conical surfaces 54a, 54a are formed in accordance with… Figure 2 The second base 23 of the second core 20 shown is in contact with the inclined surface below the Z-axis.

[0080] like Figure 7As shown, the auxiliary spool 60 has an auxiliary spool body 70 extending along the X-axis direction. An auxiliary spool insertion hole 71 is formed on the auxiliary spool body 70 along the X-axis. Furthermore, the auxiliary spool 60 has a first auxiliary spool flange 62 at one end of the auxiliary spool body 70 in the X-axis direction and a second auxiliary spool flange 72 at the other end.

[0081] An auxiliary spool connecting portion 63, which connects to the main spool 40, is formed on the upper part of the first auxiliary spool flange 62 along the Z-axis. Conical surfaces 63a, 63a inclined towards the center of the Y-axis are formed on the lower part of the auxiliary spool connecting portion 63 along the Z-axis. The conical surfaces 63a, 63a are formed to... Figure 2 The first base 13 of the first core 10 shown is in contact with the inclined surface above the Z-axis. In addition, the auxiliary spool connecting portion 63 has an R-shaped curved surface from the surface on the side of the main spool 40 along the X-axis to the surface above the Z-axis.

[0082] like Figure 7 As shown, an auxiliary spool-side connecting groove 65 is formed approximately at the center of the Y-axis of the auxiliary spool connecting portion 63. That is, as... Figure 1 As shown, the auxiliary spool side connecting groove 65 is positioned corresponding to the main spool connecting groove 45. Figure 7 As shown, the auxiliary spool side connecting groove 65 is cut out along the upper part of the Z-axis, and the bottom surface of the auxiliary spool side connecting groove 65 and the upper surface of the auxiliary spool body 70 along the Z-axis are approximately the same plane.

[0083] like Figure 7 As shown, on the end face of the auxiliary spool connecting portion 63 along the X-axis on the side of the main spool 40, a pair of auxiliary spool side fitting portions 66a and 66b are formed along the Y-axis, clamping the auxiliary spool side connecting groove 65. That is, the auxiliary spool side fitting portions 66a and 66b are positioned corresponding to the main spool side fitting portions of the main spool connecting portion. The auxiliary spool side fitting portions 66a and 66b protrude in the X-axis direction and can engage with… Figure 6 The main shaft side fitting parts 46a and 46b of the main shaft connecting part 43 shown are fitted together.

[0084] like Figure 7 As shown, pivot pins 67a and 67b are formed at both ends of the auxiliary spool connecting portion 63 along the Y-axis. The pivot pins 67a and 67b protrude outward along the Y-axis and can be inserted into the holes of the pivot support portions 47a and 47b.

[0085] like Figure 7As shown, an auxiliary spool-side fitting portion 66c is formed on the lower part of the first auxiliary spool flange 62 along the Z-axis. The auxiliary spool-side fitting portion 66c is positioned centrally along the Y-axis. That is, the auxiliary spool-side fitting portion 66c is positioned corresponding to the fitting portion of the first main spool convex portion 44. The auxiliary spool-side fitting portion 66c protrudes in the X-axis direction and can engage with… Figure 6 The main shaft side fitting portion 46c of the first main shaft convex portion 44 shown is fitted.

[0086] like Figure 6 As shown, an auxiliary spool convex portion 73 is formed above the second auxiliary spool flange 72 along the Z-axis. Conical surfaces 73a, 73a inclined towards the center of the Y-axis are formed below the auxiliary spool convex portion 73 along the Z-axis. The conical surfaces 73a, 73a are formed in accordance with… Figure 2 The third base 33 of the third core 30 shown is in contact with the inclined surface above the Z-axis.

[0087] like Figure 6 As shown, an auxiliary spool convex portion 74 is formed at the lower part of the second auxiliary spool flange 72 along the Z-axis. Above the auxiliary spool convex portion 74 along the Z-axis, tapered surfaces 74a, 74a inclined towards the center of the Y-axis are formed. The tapered surfaces 74a, 74a are formed in accordance with… Figure 2 The third base 33 of the third core 30 shown is in contact with the inclined surface below the Z-axis.

[0088] like Figure 4A As shown, the second winding 90 is wound across the main spool body 50 of the main spool and the auxiliary spool body 70 of the auxiliary spool. The main spool winding portion 92 and the auxiliary spool winding portion 94 of the second winding 90 are connected at the intermediate portion 93. The intermediate portion 93 is configured to pass through the main spool connecting groove 45 and the auxiliary spool side connecting groove 65.

[0089] like Figure 3A As shown, connection terminals 97 and 98 for connecting to an external substrate or the like are installed on the second lead portions 95 and 96 of the second winding 90. The second lead portions 95 and 96 are respectively led out from the main spool winding portion 92. The second lead portion 95 passes through the lead groove 55a and is led outward along the X-axis. The second lead portion 96 passes through the lead groove 55b and is led outward along the X-axis.

[0090] like Figure 4A As shown, a first winding 80 is wound on the main spool winding section 92. Additionally, as... Figure 3A As shown, connection terminals 87 and 88 for connecting to an external substrate are installed on the second lead portions 85 and 86 of the first winding 80. The first lead portion 85 passes through the lead groove 55c and extends outward along the X-axis. The first lead portion 86 passes through the lead groove 55d and extends outward along the X-axis.

[0091] The coil device 1 of this embodiment can be assembled in, for example, the following sequence.

[0092] First, in this embodiment, Figure 6 The pivot pins 67a and 67b of the auxiliary spool 60, as shown, pass through the holes in the pivot support portions 47a and 47b of the main spool 40, connecting the main spool 40 to the auxiliary spool 60. Additionally, the main spool side fitting portions 46a, 46b, and 46c of the main spool 40 are connected to... Figure 7 The auxiliary spool 60 shown has auxiliary spool side fitting portions 66a, 66b, and 66c fitted together, such that the first main spool flange 42 contacts the first auxiliary spool flange 62.

[0093] like Figure 4A As shown, the second winding 90 is wound onto the main spool 40 and the auxiliary spool 60. The winding can be performed using, for example, an automatic winding machine.

[0094] First, the second winding 90 is wound around the outer periphery of the main spool body 50. As shown in Figure 3, the second winding 90 wound around the main spool body 50 passes through the main spool connecting groove 45 and the auxiliary spool side connecting groove 65. Figure 4A As shown, the second winding 90, which passes through the auxiliary spool side connecting groove 65, is wound around the outer periphery of the auxiliary spool body 70. The second winding 90 wound on the auxiliary spool body 70 passes through the main spool connecting groove 45 and the auxiliary spool side connecting groove 65 again. The second winding 90 that passes through the main spool connecting groove 45 overlaps with the second winding 90 already wound on the main spool body 50. The first winding 80 overlaps and is wound on the main spool winding portion 92.

[0095] Next, as Figure 8A As shown, using the pivot pins 67a and 67b of the auxiliary spool connecting portion 63 as pivot points, the opposite side of the auxiliary spool connecting portion 63 of the first auxiliary spool flange 62 is rotated, causing it to separate from the first main spool flange 42. At this time, the auxiliary spool side fitting portions 66a, 66b, and 66c separate from the fitting portions of the first main spool flange 42. In this embodiment, the second winding 90 can be bent freely, allowing the auxiliary spool 60 to rotate while the main spool winding portion 92 and the auxiliary spool winding portion 94 are connected by the intermediate portion 93.

[0096] Next, Figure 2 The first core 10 shown is disposed on the main spindle 40. The first insertion foot 11 of the first core 10 is inserted into the main spindle insertion hole 51 from the side of the first main spindle flange 42. At this time, the inclined surface below and the inclined surface above the first base 13 along the Z-axis are respectively aligned with... Figure 6The tapered surface 43a of the connecting part and the tapered surface 44a of the convex part 44 of the first main shaft abut each other.

[0097] Next, return the auxiliary spool 60 to its initial position, so that... Figure 7 The auxiliary line shaft-side fitting parts 66a, 66b, and 66c shown are... Figure 6 The main shaft side fitting parts 46a, 46b, and 46c of the main shaft 40 shown are engaged. At this time... Figure 2 The inclined surface of the first base 13 above the Z-axis abuts against the tapered surface 63a of the first auxiliary line axis connection portion 63.

[0098] Next, Figure 2 The second core 20 shown is disposed on the main spindle 40. The second insertion foot 21 of the second core 20 is inserted into the main spindle insertion hole 51 from the side of the second main spindle flange 52. At this time, the inclined surface below and the inclined surface above the second base 23 along the Z-axis are respectively aligned with... Figure 7 The tapered surface 53a of the lead wire lead-out platform 53 and the tapered surface 54a of the second main shaft convex portion 54 abut against each other.

[0099] Next, Figure 2 The third core 30 shown is disposed on the auxiliary spool 60. The third insertion foot 31 of the third core 30 is inserted into the auxiliary spool insertion hole 71 from the side of the second auxiliary spool flange 72. At this time, the inclined surface below and the inclined surface above the third base 33 along the Z-axis respectively... Figure 6 The tapered surfaces 73a and 74a of the convex portions 73 and 74 of the auxiliary spool shown abut against each other.

[0100] like Figure 9 As shown, in the coil device 1 of this embodiment, the main spool connecting portion 43 is disposed above the Z-axis along a portion of the circumferential direction of the first main spool flange 42, which is a first end of the main spool 40. Additionally, the auxiliary spool connecting portion 63 is disposed above the Z-axis along a portion of the circumferential direction of the first auxiliary spool flange 62, which is a first end of the auxiliary spool 60. The middle portion 93 of the second winding 90 passes between the main spool connecting portion 43 and the auxiliary spool connecting portion 63. Therefore, in this embodiment, using the middle portion 93 or a portion of the connecting portion of the second winding 90 as a pivot point, the auxiliary spool 60 can rotate relative to the main spool 40, thereby opening the main spool body 50 (main winding core portion). Figure 6 The main spindle insertion hole 51 is used for the first core. Therefore, the lead of the first core can be inserted into the main spindle insertion hole 51.

[0101] The result, such as Figure 9As shown, after continuously winding a second winding 90 onto the main spool 40 and the auxiliary spool 60, the auxiliary spool 60 can be rotated relative to the main spool 40 to open the main spool insertion hole 51 of the main spool body 50, and the foot of the first core can be inserted into the main spool insertion hole 51.

[0102] After inserting the foot of the first core into the main spool insertion hole 51, rotating the auxiliary spool 60 relative to the main spool 40 in the opposite direction allows the base of the first core to be clamped between the first main spool flange 42 and the first auxiliary spool flange 62 of the main spool 40. Then, the second core can be installed at the second end of the main spool, located opposite the first main spool flange 42, namely the second main spool flange 52. Simultaneously or before / after this, the third core can be installed at the second end of the auxiliary spool 60, located opposite the first auxiliary spool flange 62, namely the second auxiliary spool flange 72. The multiple cores, consisting of the first, second, and third cores, can be arranged to form a magnetic circuit along the spool core.

[0103] Thus, in this embodiment, even if the coil device 1 has multiple cores, it is not necessary to connect the ends of the windings to each other after the cores are installed. The assembly of the coil device is extremely easy, and the reliability of the coil device is improved.

[0104] like Figure 5 As shown, in this embodiment, a first base 13 of the first core 10 is disposed between the first main spindle flange 42 and the auxiliary spindle flange 62. Furthermore, a second winding 90 is wound across the main spindle 40 and the auxiliary spindle 60. This configuration facilitates adjustment of leakage flux and allows for the easy integration of multiple components with different functions.

[0105] like Figure 9 As shown, the main spool connecting part 43 and the auxiliary spool connecting part 63 have connecting grooves 45 and 65 at corresponding positions (along the center of the Y-axis) through which the intermediate portion 93 of the winding 90 passes. Through the connecting grooves 45 and 65 through which the intermediate portion 93 of the winding passes, a single winding 90 can be continuously wound onto the main winding core and the auxiliary winding core.

[0106] like Figure 8AAs shown, in this embodiment, the auxiliary spool connecting part 63 has a pivot pin 67b (67a), and the main spool connecting part 43 has a pivot support part 47b (47a). By combining the pivot pin 67b (67a) and the pivot support part 47b (47a), the auxiliary spool 60 is supported by the main spool 40, and the main spool 40 and the auxiliary spool 60 can be detachably connected. Furthermore, it is possible to have either the pivot pin or the pivot support part in the main spool connecting part 43, and to use the other as the auxiliary spool connecting part 63. With this configuration, the auxiliary spool 60 can be rotated relative to the main spool 40 using the pivot pin as a pivot point, thus opening the main winding core part 50. Figure 6 Insert the first core into the insertion hole 51.

[0107] Alternatively, the main spindle 40 and the auxiliary spindle 60 may not be separable. For example, they may be integrally formed and connected relative to each other via a thin-walled portion that serves as a pivot point.

[0108] like Figure 6 As shown, in this embodiment, the main shaft 40 has main shaft-side fitting portions 46a and 46b that are detachably fitting recesses on the fulcrum side. Figure 7 As shown, the auxiliary spool 60 has auxiliary spool side fitting portions 66a and 66b that are detachably fitting protrusions on the fulcrum side.

[0109] In addition, such as Figure 6 As shown, the main shaft 40 has a reverse pivot-side fitting recess, namely the main shaft-side fitting portion 46c, which can be detachably fitted to the connecting portion 43 along the opposite side of the Z-axis. Additionally, as... Figure 7 As shown, the auxiliary spool 60 has an auxiliary spool side fitting protrusion, namely the auxiliary spool side fitting portion 66c, which can be detachably fitted to the connecting portion 63 along the opposite side of the Z-axis.

[0110] With this structure, in this embodiment, the main spool-side fitting portion and the auxiliary spool-side fitting portion fit together, temporarily fixing the main spool 40 and the auxiliary spool 60, thus facilitating the winding operation. Furthermore, by using a clamp for temporarily fixing the auxiliary spool 60 to the main spool 40, winding operations can be easily performed even without the fitting portion.

[0111] Second Implementation Method

[0112] like Figure 8B As shown, the coil device of this embodiment has the same structure as the coil device 1 of the first embodiment, except for the structure of the connecting part, and has the same effect. In the following description, repeated parts are omitted as much as possible, and the different parts are described in detail. In addition, common parts in the drawings are labeled with symbols for common parts.

[0113] like Figure 8B As shown, in this embodiment, the main spool 40 does not have a fulcrum support portion, and the auxiliary spool 60 does not have a swivel pin. That is, the auxiliary spool connecting portion 63 is not supported by the main spool connecting portion 43. Therefore, in this embodiment, the connecting portion is constituted by the winding midpoint 93 itself.

[0114] In this embodiment, the intermediate portion 93 of the winding, which serves as a connecting part, is positioned above the first main shaft flange 42, which is the first end of the main shaft 40, along the Z-axis in the circumferential direction. That is, the intermediate portion 93 of the winding itself serves as a connecting part, and the main shaft 40 and the auxiliary shaft 60 are rotatably connected through the intermediate portion 43 of the winding itself, and the intermediate portion 93 of the winding itself serves as a pivot point.

[0115] In this embodiment, it is particularly preferable to temporarily fix the auxiliary spool 60 to the main spool 40 during the winding operation. In this embodiment, the first main spool flange 42 and the first auxiliary spool flange 62 are provided with a fitting portion, which can temporarily fix the auxiliary spool 60 to the main spool 40.

[0116] Third Implementation Method

[0117] like Figure 4B As shown, the coil device 2 of this embodiment has the same structure and the same function as the coil device 1 of the first embodiment, except that it has the auxiliary auxiliary bobbin 160 and the fourth core 140. In the following description, repeated parts are omitted as much as possible, and different parts are described in detail. In addition, common parts in the drawings are marked with symbols for common parts.

[0118] In this embodiment, the fourth core 140 has the same shape as the third core 30. That is, the fourth core 140 has: a fourth base 143, a pair of fourth outer legs 142, 142 connected to the fourth base 143, and a fourth insertion leg 141 disposed between the fourth outer legs 142, 142.

[0119] like Figure 4B As shown, the end face of the fourth insertion foot 141 in the X-axis direction contacts the second base 23, but is not limited to this. Additionally, as... Figure 3B As shown, the end faces of the fourth outer legs 142, 142 in the X-axis direction contact the second base 23, but this is not a limitation. The lengths of the fourth insertion leg 141 and the fourth outer legs 142, 32 in the X-axis direction can also be adjusted to form a gap on their respective end faces in the X-axis direction.

[0120] like Figure 4BAs shown, the coil device 2 of this embodiment also has a secondary auxiliary spindle 160 along the axis (main spindle body 50) of the main spindle 40 on the side of the second main spindle flange 52, which is another second end.

[0121] In this embodiment, the second main axis flange 52 has a structure symmetrical to the first main axis flange 42 along the X-axis. That is, a main axis connecting portion 153 symmetrical to the main axis connecting portion 43 along the X-axis is formed on the upper part of the second main axis flange 52 along the Z-axis, and a second main axis convex portion 154 symmetrical to the first main axis convex portion 44 along the X-axis is formed on the lower part of the second main axis flange 52 along the Z-axis.

[0122] Furthermore, the main spool connector 153 is configured to connect with the auxiliary auxiliary spool connector 163 of the auxiliary auxiliary spool 160. For example... Figure 3B As shown, a main shaft connecting groove 155 is formed approximately at the center of the Y-axis of the main shaft connecting part 153.

[0123] like Figure 4B As shown, the auxiliary spool 160 has an auxiliary spool body 170 extending along the X-axis direction. An auxiliary spool insertion hole 171 is formed on the auxiliary spool body 170 along the X-axis. Furthermore, a first auxiliary spool flange 162 is provided at one end of the auxiliary spool body 170 in the X-axis direction, and a second auxiliary spool flange 172 is provided at the other end.

[0124] In this embodiment, the first auxiliary spool flange 162 has a structure symmetrical to the first auxiliary spool flange 62 along the X-axis. That is, an auxiliary auxiliary spool connecting portion 163, symmetrical to the auxiliary spool connecting portion 63 along the X-axis, is formed on the upper part of the first auxiliary auxiliary spool flange 162 along the Z-axis, and a first auxiliary auxiliary spool convex portion 164, symmetrical to the first auxiliary spool convex portion 64 along the X-axis, is formed on the lower part of the first auxiliary auxiliary spool flange 162 along the Z-axis.

[0125] Furthermore, the auxiliary spool connector 163 is configured to connect with the main spool connector 153 of the main spool 40. For example... Figure 3B As shown, a secondary auxiliary spool side connecting groove 165 is formed approximately at the center of the Y-axis of the secondary auxiliary spool connecting part 163.

[0126] The second auxiliary spool flange 172 has the same structure as the second main spool flange 52. That is, as... Figure 4B As shown, a lead wire lead-out platform 173 is formed above the second auxiliary spool flange 172 along the Z-axis. A tapered surface inclined towards the center of the Y-axis is formed below the lead wire lead-out platform 173 along the Z-axis. The tapered surface is formed to contact the inclined surface above the Z-axis of the fourth base 143 of the fourth core 140.

[0127] like Figure 3B As shown, lead grooves 175a to 175d extending along the X-axis are arranged along the Y-axis on the lead lead plate 173. The lead grooves 175a to 175d are cut out above the Z-axis, and the bottom surfaces of the lead grooves 175a to 175d are positioned at a point greater than... Figure 4B The auxiliary spool body 170 shown is positioned at a higher position on the upper surface along the Z-axis.

[0128] like Figure 4B As shown, a second auxiliary spool convex portion 174 is formed on the lower part of the second auxiliary spool flange 172 along the Z-axis. A tapered surface inclined towards the center of the Y-axis is formed on the upper part of the second auxiliary spool convex portion 174 along the Z-axis. The tapered surface is formed to contact the inclined surface of the lower part of the fourth base 143 of the fourth core 140 along the Z-axis.

[0129] like Figure 4B As shown, the second winding 90 is wound across the main spool body 50 of the main spool and the auxiliary spool body 70 of the auxiliary spool. The main spool winding portion 92 and the auxiliary spool winding portion 94 of the second winding 90 are connected at the intermediate portion 93. Figure 3B As shown, the intermediate section 93 is configured to pass through the main spool connecting groove 45 and the auxiliary spool side connecting groove 65.

[0130] like Figure 3B As shown, connection terminals 97 and 98 for connecting to an external substrate or the like are installed on the second lead portions 95 and 96 of the second winding 90. The second lead portions 95 and 96 are respectively led out from the main spool winding portion 92. The second lead portion 95 passes through the lead groove 175a and extends outward along the X-axis. The second lead portion 96 passes through the lead groove 175b and extends outward along the X-axis.

[0131] like Figure 4B As shown, the first winding 180 is wound across the main shaft body 50 of the main shaft and the auxiliary shaft body 170 of the auxiliary shaft. The main shaft winding portion 182 and the auxiliary shaft winding portion 184 of the first winding 180 are connected at the intermediate portion 183. Figure 3B As shown, the intermediate section 183 is configured to pass through the main spool connecting groove 155 and the auxiliary spool connecting groove 165.

[0132] like Figure 3B As shown, connection terminals 187 and 188 for connecting to an external substrate or the like are installed on the first lead portions 185 and 186 of the first winding 180. The first lead portions 185 and 186 are respectively led out from the auxiliary spool winding portion 184. The first lead portion 185 passes through the lead groove 175c and extends outward along the X-axis. The first lead portion 186 passes through the lead groove 175d and extends outward along the X-axis.

[0133] like Figure 4B As shown, in this embodiment, a continuous first winding 180, different from the second winding 90, is wound on the main spool body 50 (main core portion) of the main spool 40 and the auxiliary auxiliary spool body 170 (auxiliary core portion) of the auxiliary auxiliary spool 160. Furthermore, another connecting portion (main spool connecting portion 153 and auxiliary auxiliary spool connecting portion 163) is formed between the main spool 40 and the auxiliary auxiliary spool 160, including the portion through which the intermediate portion 183 of the first winding 180 passes.

[0134] In this embodiment, another connecting portion (main spool connecting portion 153 and auxiliary spool connecting portion 163) is disposed on a portion of the circumferential direction of the second main spool flange 52, which serves as the second end of the main spool 40. Furthermore, while the main winding core (main spool body 50) and the auxiliary winding core (auxiliary spool body 170) are continuously wound with the first winding 180, the auxiliary spool 160 rotates relative to the main spool 40 with a portion of the other connecting portion as its pivot point. With this configuration, the insertion hole 51 of the main winding core can be opened, and the foot 21 of the second core, which is different from the first core, can be inserted into the insertion hole 51. Moreover, the auxiliary spool connecting portion 163 may not be supported by the main spool connecting portion 153. For example, it may rotate with the middle portion 183 of the first winding 180 as its pivot point.

[0135] The other connection between the main spool 40 and the auxiliary spool 160 has the same structure as the connection between the main spool and the auxiliary spool described above, and achieves the same effect.

[0136] For example, after inserting the foot of the second core 20 into the insertion hole 51, the auxiliary spool 160 can be rotated relative to the main spool 40 in the closing direction opposite to the opening direction, allowing the base of the second core 20 to be clamped between the second main spool flange 52 of the main spool 40 and the second auxiliary spool flange 172, which is the second end of the auxiliary spool 170. Simultaneously or before this, as described above, the first core 10 can be installed between the first main spool flange 42 and the first auxiliary spool flange 62. Furthermore, the third core 20 can then be installed at the second end opposite to the first auxiliary spool flange 62, which is the first end of the auxiliary spool 60, and before and after this, the fourth core 140 can be installed at the second auxiliary spool flange 172, which is the outer end of the auxiliary spool 160. The multiple cores consisting of the first core 10, the second core 20, the third core 30, and the fourth core 140 can be arranged in a manner that forms a magnetic circuit along the spool core.

[0137] Furthermore, the present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the present invention.

[0138] In the above implementation methods, such as Figure 6As shown, a connecting groove 45 is formed approximately at the center of the first main shaft flange 42 along the Y-axis, above the Z-axis. Alternatively, this structure can be modified so that the connecting grooves are formed at multiple locations along the Y-axis above the first main shaft flange 42 along the Z-axis.

[0139] Corresponding to the position of the connecting groove formed on the first main spindle flange 42, multiple connecting grooves are also formed on the first auxiliary spindle flange 62, thereby allowing the intermediate portion of the winding to pass through each connecting groove. In this way, even if the intermediate portion of the winding passes through multiple connecting grooves, any intermediate portion is located above along the Z-axis. Therefore, the auxiliary spindle 60 can be rotated and the main spindle insertion hole 51 can be opened while the winding is wound onto the main spindle 40 and the auxiliary spindle 60.

[0140] Furthermore, in the above-described embodiments, such as Figure 6 As shown, the connecting groove 45 is formed above the first main shaft flange 42 along the Z-axis. Alternatively, this structure can be modified so that the connecting groove is formed on one side of the first main shaft flange 42 along the Y-axis.

[0141] Corresponding to the position of the connecting groove formed on the first main spindle flange 42, a connecting groove is also formed on the first auxiliary spindle flange 62, thereby allowing the intermediate portion of the winding to pass through each connecting groove. In this way, even if the intermediate portion of the winding passes along the side of the Y-axis, any intermediate portion is located along the Y-axis. Therefore, the auxiliary spindle 60 can be rotated and the main spindle insertion hole 51 can be opened while the winding is wound onto the main spindle 40 and the auxiliary spindle 60.

[0142] Symbol Explanation

[0143] 1, 2... Coil device

[0144] 10...First Chip

[0145] 11... First insertion foot

[0146] 12……First outer foot

[0147] 13……First base

[0148] 20, 120... second core

[0149] 21...Second insertion foot

[0150] 22……Second outer foot

[0151] 23……Second base

[0152] 30, 130... Third core

[0153] 31……Third insertion foot

[0154] 32……Third outer foot

[0155] 33……Third base

[0156] 40……Mainline axis

[0157] 42……First main axis flange

[0158] 43……Main shaft connection part (connection part)

[0159] 43a……conical surface

[0160] 44……First main axis convex part

[0161] 44a……conical surface

[0162] 45……Main spindle connecting groove (connecting groove)

[0163] 46a, 46b, 46c... Main axis side fitting part (fitting part)

[0164] 47a, 47b... Pivot Support

[0165] 50……Main spool body (main roll core)

[0166] 51……Main spindle insertion hole

[0167] 52, 152... Second main axis flange

[0168] 53...The fuse leads to the table.

[0169] 153……Main shaft connection (another connection)

[0170] 53a……conical surface

[0171] 54, 154... Second main axis convex part

[0172] 54a……conical surface

[0173] 55a, 55b, 55c, 55d... lead slots

[0174] 155……Main spindle connecting groove (connecting groove)

[0175] 156c……Mainline shaft side fitting part (fitting part)

[0176] 60……Auxiliary spool

[0177] 62……First auxiliary spool flange

[0178] 63……Auxiliary spool connection part

[0179] 65……Auxiliary line shaft side connecting groove

[0180] 66a, 66b, 66c... Auxiliary line spool side fitting part

[0181] 67a, 67b... Rotating pivot pin

[0182] 70……Auxiliary spool body (auxiliary core section)

[0183] 71……Auxiliary spool insertion hole

[0184] 72……Second auxiliary spool flange

[0185] 73, 74... Auxiliary spool convex part

[0186] 73a, 74a... conical surfaces

[0187] 80, 180... First winding

[0188] 182……Main spool winding section

[0189] 183... Midway

[0190] 184……Secondary auxiliary spool winding section

[0191] 85, 86, 185, 186... First lead section

[0192] 87, 88, 187, 188... connecting terminals

[0193] 90……Second winding

[0194] 92……Main spindle winding section

[0195] 93... Midway

[0196] 94……Auxiliary spool winding section

[0197] 95, 96... Second lead section

[0198] 97, 98... connecting terminals

[0199] 140... Fourth Core

[0200] 141……Fourth insertion foot

[0201] 142……Fourth outer foot

[0202] 143……Fourth base

[0203] 160……Secondary Auxiliary Spool

[0204] 162……First auxiliary spool flange

[0205] 163……Secondary auxiliary spool connecting part (another connecting part)

[0206] 165……Secondary auxiliary line shaft side connecting groove

[0207] 166c……Secondary auxiliary line shaft side fitting part

[0208] 170……Sub-auxiliary spool body

[0209] 171……Secondary auxiliary spool insertion hole

[0210] 172……Second auxiliary spool flange

[0211] 173... The fuse leads to the table.

[0212] 174……Convex part of auxiliary spool

[0213] 175a, 175b, 175c, 175d... lead wire slots

Claims

1. A coil device, wherein, have: Main spindle; An auxiliary spool, which is disposed at one end of a first portion along the axis of the main spool; and The first core is disposed between the first end of the main spool and the first end of the auxiliary spool. A continuous winding thread is wound in the main core section of the main spool and the auxiliary core section of the auxiliary spool. A connecting portion is formed between the main spool and the auxiliary spool, including the portion through which the winding passes. The connecting portion is disposed on a portion of the circumference of the first end of the main shaft. With the main winding core and the auxiliary winding core continuously wound with the yarn, and using a portion of the winding core's midpoint or connecting portion as a pivot point, the auxiliary spool is configured to rotate relative to the main spool. When the insertion hole of the main winding core is opened, the foot of the first core can be inserted into the insertion hole. The connecting part has a thin-walled portion that connects the main spindle and the auxiliary spindle in an integral form, thus becoming a pivot point for rotation.

2. The coil device according to claim 1, wherein, The connecting portion has: A main shaft connecting portion, which is formed on a circumferential portion of the first end of the main shaft; and An auxiliary spool connector is formed on a portion of the circumference of the first end of the auxiliary spool. The main spool connecting part and the auxiliary spool connecting part have connecting grooves formed at corresponding positions for the intermediate part of the winding to pass through.

3. The coil device according to claim 1 or 2, wherein, The connecting portion has a combination of a detachable and interlocking fulcrum-side fitting protrusion and a fulcrum-side fitting recess.

4. The coil device according to claim 1 or 2, wherein, Along a vertical axis perpendicular to the core of the main shaft, between the main shaft and the auxiliary shaft located on the opposite side of the connecting portion, there is a combination of a counter-pivot side fitting protrusion and a counter-pivot side fitting recess that can be detachably fitted.

5. The coil device according to claim 1 or 2, wherein, It also includes: a secondary auxiliary spool, which is disposed at a second end of the other side along the axis of the main spool. A different continuous winding, different from the winding itself, is wound on the main core portion of the main spool and the auxiliary core portion of the auxiliary spool. Between the main spool and the auxiliary spool, another connecting portion is formed, which includes the portion through which the intermediate part of the other winding passes. The other connecting portion is disposed on a portion of the circumference of the second end of the main shaft. With the other winding continuously wound around the main winding core and the auxiliary winding core, the auxiliary spool is configured to rotate relative to the main spool, using the middle part of the other winding or a part of the other connecting part as the pivot point. This opens the insertion hole of the main winding core, allowing the foot of the second core, which is different from the first core, to be inserted into the insertion hole.

6. The coil device according to claim 5, wherein, It also has: The third core is disposed along the axis at the second end opposite to the first end of the auxiliary spool; and The fourth core is disposed along the outer end of the secondary auxiliary spool.

7. The coil device according to claim 1 or 2, wherein, It also has: The second core is disposed along the axis core at the second end of the main shaft located on the opposite side of the first end; and The third core is disposed along the axis at the second end opposite to the first end of the auxiliary spool.

8. A spool, wherein, have: Main axis; and An auxiliary spool, which is disposed at one end of a first side along the axis of the main spool. A connecting portion is formed between the main spool and the auxiliary spool. The connecting portion is disposed on a portion of the circumference of the first end of the main shaft. Using a portion of the connecting part as a pivot point, the auxiliary spool is configured to rotate relative to the main spool, opening the insertion hole of the main winding core of the main spool. The connecting part has a thin-walled portion that connects the main spindle and the auxiliary spindle in an integral form, thus becoming a pivot point for rotation.

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