JP6902953B2 - Static inducer - Google Patents

Description

The present invention relates to a stationary inducer having a structure in which windings are arranged around an iron core.

The iron core of a stationary inducer may deteriorate in characteristics when compressed. In particular, in the case of a material that is sensitive to pressure, such as an iron core using an amorphous metal, the degree of deterioration in characteristics is remarkable. When the iron core of the stationary inducer is an amorphous metal, unlike the iron core of a normal electrical steel plate, the iron core itself is fragile, so that it cannot be used as a support column that suppresses deformation of the coil at the time of a short circuit. For this reason, a static induction device having an amorphous metal iron core needs to take measures to suppress the deformation of the coil.

As a measure for suppressing the deformation of the coils, it has been proposed to fix the relative positions of the coils so that the coils themselves are not crushed (Patent Documents 1 and 2).

Japanese Unexamined Patent Publication No. 2005-228927 Jikkai Sho 55-101031

The relative misalignment of the windings can put pressure on the iron core. When the iron core is compressed, it may lead to deterioration of the characteristics of the iron core.

The technique of Patent Document 1 has a structure in which a U-shaped positioning bracket is hooked on the inside of a bobbin so as to straddle between a plurality of bobbins. In this structure, the relative positions of the coils cannot be constrained in all directions, so that the position accuracy is limited. In particular, it is difficult to accurately maintain the positions of the coils with respect to the axial force of the coils. Further, Patent Document 1 states that the positioning bracket may be omitted by forming a flange by extending the end of the bobbin at a right angle, but there is no description or suggestion about restraint at the flange. The bobbin and windings are not fixed to each other.

In the technique of Patent Document 2, protrusions and notches are provided in a wound frame with a flange so that they can be hooked on each other. In this structure as well, since the coils are not firmly restrained in the fitting direction, it is difficult to accurately maintain the positions of the coils with respect to the axial force of the coils, as in the technique of Patent Document 1. is there. Further, since the technique of Patent Document 2 is intended for a transformer used for a printed circuit board or the like, it must withstand the mechanical force generated when a coil is short-circuited on the scale of a static inducer for distribution and support the load of the iron core. It is difficult.

The technique of Patent Document 1 and the technique of Patent Document 2 are premised on the connection by hooking the restraint between the bobbins or the winding frames. When it comes to the scale of a static inducer for power distribution, a steel material or a material having the same rigidity as the steel material is used, so a certain amount of play is required to fit the hooked portion. Therefore, it is difficult for the technique of Patent Document 1 and the technique of Patent Document 2 to accurately position the winding or coil in directions other than the axial direction, and the relative winding or coil is also used when assembling the stationary inducer. There is a possibility that the target position will shift. As a result, in the technique of Patent Document 1 and the technique of Patent Document 2, the characteristics of the iron core may deteriorate due to the compression of the iron core.

An object of the present invention is to suppress a relative misalignment of a winding and a member to which the winding is attached in a stationary induction device having a structure in which the winding is arranged around an iron core.

Stationary induction apparatus according to the present invention comprises a core, a plurality of frame members, a winding, and a fastener. The iron core has two yokes that are opposed to each other and a plurality of legs that are arranged side by side and connected to the yokes. The frame member includes a tubular member which legs are inserted, and a projecting portion projecting from both ends of the tubular member to the outer tubular member. The windings are arranged on the frame member. The fastener fixes adjacent frame members to each other. The plurality of frame members are fixed portions that are bent from the end of the overhanging portion and rise in the direction in which the tubular member extends and away from the tubular member, and are the overhanging portions of adjacent frame members. Each of the four corners has a fixing portion arranged so as to face the fixing portion, and each of the fixing portions has a hole into which a fastener is inserted, and the fixing portions of adjacent frame members face each other. The fixing portions of the adjacent frame members are fixed to each other by the fastener in the state of being in contact with each other .

The present invention has an effect that in a stationary induction device having a structure in which windings are arranged around an iron core, relative misalignment of the windings and members to which the windings are attached can be suppressed.

Perspective view of the stationary inducer according to the first embodiment The figure which shows the connecting part of the stationary inducer which concerns on Embodiment 1. Front view of the iron core of the stationary inducer according to the first embodiment Front view of the frame member included in the stationary inducer according to the first embodiment. Perspective view of the frame member included in the stationary inducer according to the first embodiment. The figure which shows the connection structure of the stationary inducer which concerns on Embodiment 1. The figure which shows the state which the frame member is connected as a winding type to the attachment jig of a winding device through the attachment part of the overhang part of the frame member which concerns on Embodiment 1. The figure which shows the state which wound up the winding with the frame member which concerns on Embodiment 1 as a winding type. The figure which shows the state which the iron core which concerns on Embodiment 1 is attached to a frame member The figure which shows the state of the outward force generated in the winding, and the state of the force generated accompanying the outward force when the winding of the stationary induction device which concerns on Embodiment 1 is short-circuited. The figure which shows the state of the inward force generated in the winding when the winding of the static induction device which concerns on Embodiment 1 is short-circuited. The figure which shows the state which the support supports the stationary inducer which concerns on Embodiment 1. The figure which shows the state of the load when the stationary inducer which concerns on Embodiment 1 is supported by a support through a fixture. The figure which shows the connection structure which concerns on the 1st modification of Embodiment 1. A perspective view showing a part of the frame member shown in FIG. The figure which shows the connection structure which concerns on the 2nd modification of Embodiment 1. A perspective view showing a part of the frame member shown in FIG. Front view of the frame member according to the second embodiment Perspective view of the frame member according to the second embodiment The figure which shows the connection structure which concerns on Embodiment 2. The figure which shows the state which the frame member is connected as a winding type to the attachment jig of a winding device through the attachment part of the overhang part of the frame member which concerns on Embodiment 2. Front view of the frame member according to the modified example of the second embodiment Perspective view of the frame member according to the modified example of the second embodiment The figure which shows the connection structure which concerns on the modification of Embodiment 2. The figure which shows the state which the frame member is connected as a winding type to the attachment jig of a winding device through the attachment part of the overhang part of the frame member which concerns on the modification of Embodiment 2.

Hereinafter, the stationary inducer according to the embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the following embodiments.

Embodiment 1.
FIG. 1 is a perspective view of the stationary inducer 100 according to the first embodiment. FIG. 2 is a diagram showing a connecting portion of the stationary inducer 100 according to the first embodiment. FIG. 3 is a front view of the iron core 1 included in the stationary inducer 100 according to the first embodiment. FIG. 4 is a front view of the frame member 3 included in the stationary inducer 100 according to the first embodiment. FIG. 5 is a perspective view of the frame member 3 included in the stationary inducer 100 according to the first embodiment. FIG. 6 is a diagram showing a connecting structure 101 of the stationary inducer 100 according to the first embodiment.

In the first embodiment, the static induction device 100 is a transformer. More specifically, the static induction device 100 is an amorphous transformer. Amorphous transformers are transformers in which amorphous metal is used as the material for the iron core. In the stationary inducer 100, the winding 2 is arranged around the iron core 1.

The stationary inducer 100 includes an iron core 1, a winding 2, a frame member 3, and a fixture 20. In the stationary inducer 100, the winding 2 is attached to the leg of the iron core 1 via the frame member 3. The stationary inducer 100 has a plurality of windings 2 and a plurality of frame members 3. In the first embodiment, the stationary inducer 100 has three windings 2 and three frame members 3, respectively, but may have at least two windings 2 and two frame members 3.

In the first embodiment, the iron core 1 is a wound iron core. As shown in FIG. 3, the iron core 1 has yokes 11 and 12 and a plurality of legs 13. In the first embodiment, the iron core 1 has three legs 13, but the number of legs 13 is not limited to three. The iron core 1 may have at least two legs 13. The plurality of legs 13 are arranged side by side in a row and are arranged between the two yokes 11 and 12. The ends of the plurality of legs 13 opposite to the yoke 11 are connected to each other to form the yoke 12. At least a magnetic circuit may be formed between the leg 13, the yoke 11, and the yoke 12.

Each leg 13 on the yoke 11 side is inserted into a frame member 3 in which the winding 2 is arranged. After that, the ends of each leg 13 on the opposite side of the yoke 11 are connected to form the yoke 12. In this way, the iron core 1 and the frame member 3 in which the winding 2 is arranged are combined.

The winding 2 is a conductor, and a copper wire is used in the first embodiment. The winding 2 is not limited to a copper wire as long as it is a conductor, and may be an aluminum wire or an aluminum alloy wire. Further, the winding 2 is not limited to an aluminum wire or an aluminum alloy wire.

As shown in FIGS. 4 and 5, the frame member 3 is a member having a tubular portion. Specifically, the frame member 3 has a body portion 3B and an overhanging portion 10. The frame member 3 has an overhanging portion 10 at both end portions 3T of the body portion 3B. The overhanging portion 10 is a portion that overhangs from both end portions 3T of the body portion 3B toward the outer ES of the body portion 3B. That is, the frame member 3 has an overhanging portion 10 at both end portions 3T, respectively. The overhanging portion 10 overhangs the entire circumference of the end portion 3T of the frame member 3.

The body 3B has four rectangular side plates 3S. In the four side plates 3S, adjacent side plates 3S are vertically combined with each other. The body portion 3B has a square pillar shape on the outside, and has a space 3I surrounded by four side plates 3S. The space 3I is open to both ends 3T of the body 3B. The shape of the portion where the space 3I opens is rectangular. The angle at which the adjacent side plates 3S of the four side plates 3S are combined is not limited to 90 degrees. That is, the shape of the portion where the space 3I opens does not have to be rectangular.

The body portion 3B is a tubular member. The legs 13 of the iron core 1 are inserted through the body portion 3B. Specifically, each leg 13 of the iron core 1 is inserted into each space 3I of the plurality of body portions 3B and arranged in the space 3I.

As shown in FIG. 5, the overhanging portion 10 is a plate-shaped member having an opening portion 10E. The outer shape of the overhanging portion 10 is rectangular. In the first embodiment, the shape of the opening 10E is rectangular, which is the same shape as the portion where the space 3I opens. The overhanging portion 10 has holes 10H at each of the four corner portions. The fastener 4 shown in FIGS. 1 and 2 is attached to the hole 10H.

In the first embodiment, the frame member 3 is made of metal. The body portion 3B and the two overhanging portions 10 are manufactured as separate members, and are connected by welding or other joining means. The two overhanging portions 10 may be formed by bending the body portion 3B. The frame member 3 is arranged around the leg 13 of the iron core 1.

As shown in FIGS. 1 and 2, the frame member 3 and the winding 2 wound around the frame member 3 are arranged in a row and attached to the iron core 1. Adjacent frame members 3 are connected by a fixture 20. Specifically, the fixture 20 fixes the adjacent frame member 3 by fixing the adjacent overhanging portions 10 to each other.

As shown in FIGS. 1, 2 and 6, the fixture 20 has a fastener 4 and a connecting member 5. In the first embodiment, the fastener 4 is a bolt 4B and a nut 4N screwed into the bolt 4B. The fastener is not limited to the bolt 4B and the nut 4N, and may be a rivet. As shown in FIG. 6, the bolt 4B penetrates the hole 10H of the overhanging portion 10 of the frame member 3 and the hole 5H of the connecting member 5. In this state, the nut 4N is screwed into the bolt 4B and tightened to fix the overhanging portion 10 and the connecting member 5.

In this way, the fixture 20 indirectly fixes the plurality of frame members 3 via the connecting member 5. The fixture 20 fixes a plurality of frame members 3 in both the axial direction of the frame member 3 and the direction orthogonal to the axial direction. Since the fixture 20 restrains the movement of the plurality of frame members 3 in both the axial direction and the direction orthogonal to the axial direction, relative misalignment is suppressed in both the axial direction and the direction orthogonal to the axial direction. Will be done. Similar to the frame member 3, the winding 2 wound around the frame member 3 also suppresses relative misalignment in both the axial direction and the direction orthogonal to the axial direction. As shown in FIG. 4, the axial direction Zf of the frame member 3 is a direction from one end 3T of the frame member 3 toward the other end 3T. As shown in FIG. 2, the axial direction Zc of the winding 2 is a direction that penetrates the portion surrounded by the winding 2.

The plurality of frame members 3 are integrated by being fixed by the fixture 20. As a result, the misalignment between the adjacent frame members 3 and the adjacent windings 2 is suppressed, so that the deterioration of the position accuracy is suppressed. Specifically, the decrease in accuracy of the distance between the adjacent frame members 3 and the adjacent windings 2 is suppressed, and the frame members 3 in the axial direction of the frame members 3 and the windings 2 in the axial direction of the windings 2 are suppressed. Deterioration of mutual position accuracy is suppressed.

By suppressing the relative misalignment of the windings 2 and the decrease in the position accuracy, the compression of the iron core 1 is suppressed. Therefore, the deterioration of the characteristics due to the compression of the iron core 1 is suppressed. Further, when assembling the stationary inducer 100, it is preferable that the iron core 1 can insert the plurality of frame members 3 through the plurality of legs 13 at the same time. Since the connecting structure 101 suppresses the positional deviation between the frame members 3 and the relative decrease in the positional accuracy, when the stationary inducer 100 is assembled, the legs 13 of the iron core 1 are placed in the space 3I of the frame member 3. Easy to insert.

FIG. 7 is a diagram showing a state in which the frame member 3 is connected as a winding type to the mounting jig 6 of the winding device via the mounting portion of the overhanging portion 10 of the frame member 3 according to the first embodiment. is there. FIG. 8 is a diagram showing a state in which the winding 2 is wound around the frame member 3 according to the first embodiment as a winding type. The winding 2 is manufactured by a winding device that manufactures the winding. Specifically, the winding device manufactures the winding 2 by winding a copper wire around a winding mold attached to the winding device via a mounting jig 6. The mounting jig 6 has a first connecting portion 6P attached to the winding mold and a second connecting portion 6S attached to the winding device.

As shown in FIG. 7, in the frame member 3, the bolt 6B is inserted into the hole 10H which is the mounting portion of the overhanging portion 10 and the hole 6H of the mounting jig 6, and the nut 6N is screwed into the bolt 6B. , Attached to the first connection portion 6P. In this state, the winding device winds the wire of the conductor directly around the frame member 3 to form the winding 2 on the frame member 3 as shown in FIG. The frame member 3 is directly attached to the attachment jig 6 of the winding device by using the hole 10H to which the fastener 4 shown in FIG. 5 is attached, and is used as a winding mold. Therefore, when the winding 2 is manufactured, the frame member 3 is used as a winding mold. There is an advantage that the winding mold is not required.

FIG. 9 is a diagram showing a state in which the iron core 1 according to the first embodiment is attached to the frame member 3. The plurality of frame members 3 around which the windings 2 are wound are fixed by the fasteners 4 and the connecting members 5. By the fastener 4 and the connecting member 5, the plurality of windings 2 and the frame member 3 are in both directions of the axial direction of the winding 2 and the frame member 3 and the direction orthogonal to the axial direction of the winding 2 and the frame member 3. Positioning is done.

With the plurality of windings 2 and the frame member 3 fixed, the legs 13 of the iron core 1 are inserted into the space 3I of the frame member 3. After that, the yoke 12 is formed by connecting the ends of the legs 13 opposite to the yoke 11, and the stationary inducer 100 shown in FIG. 1 is completed.

FIG. 10 shows the outward force Fe generated in the winding 2 and the force Ft generated in association with the outward force Fe when the winding 2 of the stationary inducer 100 according to the first embodiment is short-circuited. It is a figure which shows the state. FIG. 11 is a diagram showing a state of an inward force Fi generated in the winding 2 when the winding 2 of the stationary induction device 100 according to the first embodiment is short-circuited.

As shown in FIG. 10, when the winding 2 is short-circuited, the winding 2 swells outward, so that it acts to widen the distance between the adjacent winding 2 and the frame member 3. The outward force Fe is transmitted to the fixing tool 20, that is, the fastener 4 and the connecting member 5 that connect the adjacent frame members 3 to each other via the frame member 3.

The outward force Fe transmitted to the fixture 20 becomes a force Ft that pulls the fixture 20. That is, the force Ft is a force generated in association with the outward force Fe. Since the fixture 20 restrains the adjacent frame members 3 and receives the force Ft, it suppresses the widening of the distance between the adjacent windings 2 and the frame members 3. By this action, the fixture 20 can maintain the relative positional relationship between the plurality of windings 2 of the stationary inducer 100.

As shown in FIG. 11, when the winding 2 is short-circuited, not only an outward force Fe but also an inward force Fi that causes the winding 2 to collapse inward is generated. Since the frame member 3 receives the inward force Fi, the inward force Fi transmitted from the frame member 3 to the iron core 1 is reduced. As a result, the deterioration of the characteristics of the iron core 1 due to the compression of the iron core 1 is suppressed.

Since the frame member 3 has the overhanging portion 10, it is less likely to be deformed as compared with the frame member having no overhanging portion 10. Therefore, if the strength of the frame member 3 is about the same as that of the frame member having no overhanging portion 10, the thickness of the side plate 3S of the frame member 3 can be reduced, which has the effect of reducing the weight and the material of the frame member 3. Can also be obtained.

FIG. 12 is a diagram showing a state in which the support 14 supports the stationary inducer 100 according to the first embodiment. FIG. 13 is a diagram showing a state of load when the stationary inducer 100 according to the first embodiment is supported by the support 14 via the fixture 20. As shown in FIG. 12, the stationary inducer 100 is supported by the support 14. When the stationary inducer 100 is installed, the support 14 is installed in the direction in which gravity acts, that is, on the G side in the vertical direction, and supports the end 3T side of the frame member 3 on the G side in the vertical direction from the G side in the vertical direction. In this example, the support 14 supports the frame member 3 via the connecting member 5 of the fixture 20.

In the support 14, the installation portion 14B is installed on the installation surface. The support 14 is provided with a protrusion 14C on the opposite side of the installation portion 14B. The protrusion 14C is in contact with and supports the connecting member 5. Since the connecting member 5 is fixed to the overhanging portion 10 of the frame member 3 by the fastener 4, the load Fu from the plurality of frame members 3, the plurality of windings 2 and the iron core 1 is connected on the G side in the vertical direction. It is supported by the support 14 via the member 5. With such a support structure, the weight of the iron core 1 is transferred through the overhanging portion 10 of the frame member 3 on the yoke 11 side, the body portion 3B of the frame member 3, and the overhanging portion 10 of the frame member 3 on the yoke 12 side. It is supported by the connecting member 5 in contact with the protrusion 14C of the support 14 on the G side in the vertical direction.

Further, according to the support structure described above, in the iron core 1, the plurality of legs 13 shown in FIG. 3 and the yoke 12 on the vertical direction G side are lifted by the yoke 11 on the side opposite to the vertical direction G, and the load is supported. To. Therefore, the weight of the iron core 1 does not act on the legs 13 and the yoke 12 of the iron core 1. Therefore, the deterioration of the characteristics of the iron core 1 due to the pressure of the iron core 1 by its own weight is suppressed.

The support 14 supports the connecting member 5 on the vertical direction G side, but may support the connecting member 5 on the side opposite to the vertical direction G, that is, the connecting member 5 on the yoke 11 side of the iron core 1. The support 14 may support both the connecting member 5 on the G side in the vertical direction and the connecting member 5 on the yoke 11 side of the iron core 1. Further, the support body 14 may support the overhanging portion 10 of the frame member 3. In this case, the support 14 can support at least one of the overhanging portion 10 on the G side in the vertical direction and the overhanging portion 10 on the yoke 11 side of the iron core 1.

In the first embodiment, the bolt 4B constituting the fastener 4 may be attached in advance to the hole 10H of the overhanging portion 10, or may be directly attached to the overhanging portion 10 having no hole 10H. Good. When the bolt 4B is directly attached to the overhanging portion 10 having no hole 10H, the bolt 4B is joined to the overhanging portion 10 by welding or other joining means to the overhanging portion 10. FIGS. 1, 2 and 6 show a state in which the bolt 4B is pre-attached to the overhanging portion 10. In this state, if the connecting member 5 is attached to the bolt 4B between the adjacent frame members 3 and the nut 4N is screwed into the bolt 4B, the frame member 3 and the winding 2 are automatically screwed without using a jig and a scale. The relative positions of each other are accurately determined. As a result, the positioning of the frame member 3 and the winding 2 becomes easy, so that the workability when assembling the static induction device 100 is greatly improved. Further, since the plurality of frame members 3 and windings 2 are connected and integrated, material handling of the frame members 3 and windings 2 can be performed collectively. As a result, the work efficiency when assembling the stationary inducer 100 is improved.

First modification example.
FIG. 14 is a diagram showing a connecting structure 101a according to the first modification of the first embodiment. FIG. 15 is a perspective view showing a part of the frame member 3a shown in FIG. In the connecting structure 101 shown in FIG. 6, the fixing tool 20 fixed the overhanging portions 10 of the frame members 3 indirectly adjacent to each other via the connecting member 5 and the fastener 4. In the connecting structure 101a, the fasteners 4 which are the fixing tools directly fix the adjacent frame members 3a to each other, and more specifically, the overhanging portions 10a of the adjacent frame members 3a are directly fixed to each other.

The overhanging portion 10a has a fixing portion 21 for fixing the adjacent overhanging portions 10a to each other. The fixing portion 21 is a part of the overhanging portion 10a. In the first modification, the fixing portion 21 may extend along the direction CD parallel to the direction in which the body portion 3B, which is a tubular member, extends. In the first modification, parallelism includes a range of 0 degrees ± 5 degrees or 180 degrees ± 5 degrees. The direction in which the body portion 3B extends is the direction from one end portion 3Ta1 of the body portion 3B toward the other end portion 3Ta2, that is, the axial direction Zfa of the body portion 3B. That is, the direction CD is a direction parallel to the axial direction Zfa of the body portion 3B. In the first embodiment, the direction CD is orthogonal to the direction in which the overhanging portion 10a projects from the body portion 3B. The direction in which the fixed portion 21 extends does not have to be orthogonal to the direction in which the overhanging portion 10a projects from the body portion 3B, and may intersect. That is, the angle formed by the direction in which the fixing portion 21 extends and the direction in which the overhanging portion 10a projects from the body portion 3B may be other than 0 degrees or 180 degrees.

As shown in FIG. 15, the fixing portions 21 are provided at the four corners of the overhanging portion 10a. Each fixing portion 21 has a hole 22. When the overhanging portions 10a of the adjacent frame members 3a are fixed to each other, the fixing portions 21 of the adjacent overhanging portions 10a face each other, and the bolt 4B of the fastener 4 is inserted into the hole 22 of each fixing portion 21. It is inserted. Then, by screwing the nut 4N into the bolt 4B, the fixing portions 21 of the adjacent frame members 3a are fixed to each other. Fasteners 4 are bolts 4B and nuts 4N, but are not limited thereto. The fastener 4 may be a rivet.

The connecting structure 101a has an advantage that the number of parts can be reduced because the connecting member 5 is not required as compared with the connecting structure 101 shown in FIG.

Second modified example.
FIG. 16 is a diagram showing a connecting structure 101b according to a second modification of the first embodiment. FIG. 17 is a perspective view showing a part of the frame member 3b shown in FIG. Similar to the connecting structure 101a shown in FIG. 14, the connecting structure 101b directly fixes the adjacent frame members 3b to each other, and more specifically to the fixing portions 23 of the frame member 3b, but the form of the fixing portion 23 is different. Specifically, the fixing portion 23 of the connecting structure 101b extends along the direction in which the overhanging portion 10b projects from the frame member 3b, that is, in the direction toward the outer ES of the frame member 3b.

As shown in FIG. 17, fixing portions 23 for fixing adjacent overhanging portions 10b are provided at four corners of the overhanging portions 10b. The fixing portion 23 is a part of the overhanging portion 10b. Each fixing portion 23 has a hole 24. When the overhanging portions 10b of the adjacent frame members 3b are fixed to each other, as shown in FIG. 16, the fixing portions 23 of the adjacent overhanging portions 10b are overlapped with each other, and the holes of the respective fixing portions 23 are overlapped. The bolt 4B of the fastener 4 is inserted through the 24. Then, by screwing the nut 4N into the bolt 4B, the fixing portions 23 of the adjacent frame members 3b are fixed to each other.

Similar to the connecting structure 101a shown in FIG. 14, the connecting structure 101b does not require the connecting member 5 as compared with the connecting structure 101 shown in FIG. 6, so that there is an advantage that the number of parts can be reduced. Further, since the connecting structure 101b does not need to bend the fixing portion 23, there is an advantage that the manufacturing process of the frame member 3b can be simplified as compared with the connecting structure 101a.

As described above, in the first embodiment, the stationary inducer 100 indirectly fixes the plurality of frame members 3 by the fixture 20 having the fastener 4 and the connecting member 5. Further, in the above-described modification, the connecting structures 101a and 101b use the fastener 4 as a fixing tool to directly fix the plurality of frame members 3a or the plurality of frame members 3b. With such a structure, the relative positional deviation of the plurality of frame members 3, 3a, 3b and the relative positional deviation of the windings 2 attached to the plurality of frame members 3, 3a, 3b are suppressed. As a result, the pressure on the iron core 1 due to the displacement of the positions of the plurality of frame members 3, 3a, 3b and the plurality of windings 2 is suppressed, so that the deterioration of the characteristics of the iron core 1 is suppressed.

In the first embodiment and the modified example, even if the winding 2 bulges outward when the winding 2 is short-circuited, the fixture 20 and the fastener 4 as the fixture restrain the plurality of frame members 3, 3a, 3b. .. Therefore, it is possible to prevent the outward force Fe generated by the winding 2 bulging outward from acting on the iron core 1 and pressing the iron core 1. As a result, in the first embodiment and the modified example, it is possible to suppress the deterioration of the characteristics of the iron core 1 due to the deformation due to the short circuit of the winding 2, and also to suppress the deformation of the iron core 1.

In the first embodiment and the modified example, even if the winding 2 tries to be crushed inward when the winding 2 is short-circuited, the frame members 3, 3a and 3b suppress the winding 2 from being crushed inward. .. As a result, in the first embodiment and the modified example, it is possible to suppress the deterioration of the characteristics of the iron core 1 due to the deformation due to the short circuit of the winding 2, and also to suppress the deformation of the iron core 1. The frame members 3, 3a, 3b of the first embodiment and the modified example have overhanging portions 10, 10a, 10b extending to the outside of the body portion 3B at both ends of the body portion 3B, so that the strength is improved. There are also advantages.

As described above, in the first embodiment and the modified example, even if various forces act on the frame members 3, 3a, 3b, the frame members 3, 3a, 3b are formed by the fixture 20 or the fastener 4 used as the fixture. The accuracy of the relative positions of each other is guaranteed. Therefore, in the first embodiment and the modified example, the change in the characteristics of the iron core 1 can be suppressed by suppressing the pressure on the iron core 1. As a result, the first embodiment and the modified examples can provide the stationary inducer 100 of robust and stable quality. Further, in the first embodiment and the modified example, the accuracy of the relative positions of the frame members 3, 3a, 3b is guaranteed, so that the work of assembling the iron core 1 to the frame members 3, 3a, 3b becomes easy. It also has the advantage of improving productivity.

The first embodiment and the modified example can suppress the deterioration of the characteristics of the iron core 1, so that even if the iron core 1 is manufactured of a pressure-sensitive material such as an amorphous metal, a static inducer 100 of stable quality is provided. it can.

In the first embodiment and the modified example, the static induction device 100 is a transformer, but it may be a reactor. Further, the static induction device 100 is not limited to the transformer and the reactor. In the first embodiment, the static induction transformer 100 is an amorphous transformer, but the type of transformer is not limited. For example, the static induction device 100 may be a transformer having an iron core made of a silicon steel plate as a material.

In the first embodiment and the modified example, the frame members 3, 3a and 3b have a quadrangular prism shape, but the shape is not limited to this shape. The frame members 3, 3a and 3b may have a cylindrical shape or a hexagonal column shape. The shapes of the overhanging portions 10, 10a and 10b and the shapes of the portions of the frame members 3, 3a and 3b where the space 3I opens are not limited to the shapes disclosed in the first embodiment and the modified examples.

In the first embodiment and the modified example, the frame members 3, 3a and 3b are assumed to have overhanging portions 10, 10a and 10b at both ends, but the structure is not limited to such a structure. The frame members 3, 3a, 3b may have overhanging portions 10, 10a, 10b at one end. That is, the frame members 3, 3a, 3b may have overhanging portions 10, 10a, 10b at at least one end.

The configurations disclosed in the first embodiment and the modifications can be appropriately applied to the following embodiments. When applied to the following embodiments, the configurations disclosed in the first embodiment and the modified examples have the same actions and effects as those of the first embodiment and the modified examples.

Embodiment 2.
The second embodiment has a different structure of the fixture that connects the frame members 3 of the stationary inducer 100 of the first embodiment. Other structures are the same as in the first embodiment.

FIG. 18 is a front view of the frame member 3c according to the second embodiment. FIG. 19 is a perspective view of the frame member 3c according to the second embodiment. FIG. 20 is a diagram showing a connecting structure 101c according to the second embodiment.

As shown in FIGS. 18 and 19, the frame member 3c has bolts 4B attached to the overhanging portion 10. Specifically, the head 4BH of the bolt 4B is joined to the overhanging portion 10 by welding or other joining means.

As shown in FIG. 20, the fixture 20c has a fastener 4 and a connecting member 5. In the second embodiment, the fastener 4 is a bolt 4B and a nut 4N screwed into the bolt 4B. The fastener is not limited to the bolt 4B and the nut 4N, and may be a rivet. As shown in FIG. 20, the bolt 4B penetrates the hole 5H of the connecting member 5. In this state, the nut 4N is screwed into the bolt 4B and tightened to fix the overhanging portion 10 and the connecting member 5. In this way, the fixture 20c indirectly fixes the plurality of frame members 3 via the connecting member 5.

FIG. 21 is a diagram showing a state in which the frame member 3c is connected as a winding type to the mounting jig 6 of the winding device via the mounting portion of the overhanging portion 10 of the frame member 3c according to the second embodiment. is there. The frame member 3d is attached to the first connection portion 6P by inserting the bolt 4B, which is the attachment portion of the overhanging portion 10, into the hole 6H of the attachment jig 6, and screwing the nut 6N into the bolt 4B. In this state, the winding device winds the wire of the conductor directly around the frame member 3.

Modification example.
In the modified example of the second embodiment, the structure of the fixture is different from that of the second embodiment. Other structures are the same as in the second embodiment.

FIG. 22 is a front view of the frame member 3d according to the modified example of the second embodiment. FIG. 23 is a perspective view of the frame member 3d according to the modified example of the second embodiment. FIG. 24 is a diagram showing a connecting structure 101d according to a modified example of the second embodiment.

As shown in FIGS. 22 and 23, the frame member 3d has a nut 4N attached to the overhanging portion 10. The nut 4N is joined to the overhanging portion 10 by welding or other joining means. The positions of the screw holes of the nut 4N are aligned with the positions of the holes 10 formed in the frame member 3d.

As shown in FIG. 24, the fixture 20d has a fastener 4 and a connecting member 5. In the modified example of the second embodiment, the fastener 4 is a bolt 4B and a nut 4N screwed into the bolt 4B. The fastener is not limited to the bolt 4B and the nut 4N, and may be a rivet. As shown in FIG. 24, the bolt 4B penetrates the hole 5H of the connecting member 5. The bolt 4B penetrating the hole 5H is screwed into the nut 4N attached to the overhanging portion 10 and tightened to fix the overhanging portion 10 and the connecting member 5. In this way, the fixture 20d indirectly fixes the plurality of frame members 3 via the connecting member 5.

FIG. 25 shows a state in which the frame member 3d is connected as a winding type to the mounting jig 6 of the winding device via the mounting portion of the overhanging portion 10 of the frame member 3d according to the modified example of the second embodiment. It is a figure which shows. The frame member 3d is attached to the first connection portion 6P by screwing the bolt 6B inserted into the hole 6H of the attachment jig 6 into the nut 4N which is the attachment portion of the overhanging portion 10. In this state, the winding device winds the wire of the conductor directly around the frame member 3.

The configurations shown in the above embodiments and modifications show an example of the contents of the present invention, can be combined with other known techniques, and do not deviate from the gist of the present invention. It is also possible to omit or change a part of the configuration.

1 Iron core, 2 windings, 3, 3a, 3b, 3c, 3d frame member, 3B body, 3I space, 3S side plate, 3T end, 4 fasteners, 4B bolts, 4N nuts, 5 connecting members, 6 mounting fixtures Jigs, 10, 10a, 10b overhangs, 10E openings, 10H holes, 11,12 yokes, 13 legs, 14 supports, 14B installation parts, 14C protrusions, 20, 20c, 20d fixtures, 21,23 fixings Part, 100 stationary inducer, 101, 101a, 101b, 101c, 101d connected structure.

Claims (3)

Two yokes facing each other , and an iron core having a plurality of legs arranged side by side and connected to the yokes.
A plurality of frame members having a tubular member in which the leg is inserted, and a projecting portion projecting outwardly of the tubular member from both ends of the tubular member,
The windings arranged on the frame member and
Fasteners that fix adjacent frame members to each other,
Only including,
The plurality of frame members are fixed portions that are bent from the end of the overhanging portion and rise in a direction in which the tubular member extends and away from the tubular member, and are adjacent to the frame member. Each of the four corners has the fixing portion arranged so as to face the fixing portion of the overhanging portion.
Each of the fixing portions has a hole into which the fastener is inserted.
A stationary inducer in which the fixing portions of the adjacent frame members are fixed to each other by the fastener in a state where the fixing portions of the adjacent frame members are in contact with each other facing each other. Two yokes facing each other, and an iron core having a plurality of legs arranged side by side and connected to the yokes.
A plurality of frame members having a tubular member through which the legs are inserted and overhanging portions extending from both ends of the tubular member to the outside of the tubular member.
The windings arranged on the frame member and
Fasteners that fix adjacent frame members to each other,
Including
The plurality of frame members are fixed portions extending from the end portion of the overhanging portion toward the adjacent frame member, and are overlapped with the fixing portion of the overhanging portion of the adjacent frame member. The fixed portions to be arranged are provided at the four corners, respectively.
Each of the fixing portions has a hole into which the fastener is inserted.
A stationary inducer in which the fixing portions of the adjacent frame members are fixed to each other by the fastener in a state where the fixing portions of the adjacent frame members are overlapped with each other. Before Symbol iron core, the vertically lifted by the opposite side of the yoke, the load is supported, stationary induction apparatus according to claim 1 or 2.

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