JP2019160706A - Electrical connection unit material and electrical connection unit material set - Google Patents

Abstract

To provide an inexpensive electrical connection structure insulatable stably to the periphery.SOLUTION: An electrically connection unit material 51 includes a plurality of flat wires 1 and a connection terminal 11. The flat wire 1 has an elongated conductor 2 having a rectangular cross-sectional shape, and an isolation layer 3 for coating the periphery of the conductor 2. The connection terminal 11 is fixed to each conductor exposed part 4 of the plurality of flat wires 1 in the state where each conductor exposed part 4 in which the isolation layer 3 is partially removed and the conductor 2 is exposed to the periphery in each flat wire 1 is arranged in the mutually contacted or adjacent state.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a configuration for electrically connecting electrical components to each other, for example, in an automobile.

  Patent Document 1 discloses a bus bar that is connected to a power source and supplies electricity to an electrical component. This bus bar is provided with an insulating coating around it in order to prevent short circuit with other adjacent bus bars. In Patent Document 1, an insulating coating is formed by applying an insulating resin to a conductive member and then curing it.

JP 2006-066435 A

  In the configuration of Patent Document 1, since the thickness of the insulating layer changes depending on the shape of the bus bar, there is a possibility that a portion where the insulating performance is insufficient is generated. In addition, since a metal mold is required for processing to form the bus bar conductor, the manufacturing cost is increased.

  In addition, the structure which performs electrical connection using the wire harness which bundled the electric wire which has flexibility instead of the bus bar with insulation coating is also considered. However, when the electric wire is flexible, the electric wire bundle is greatly shaken by the vibration of the automobile or the like. Therefore, the wire harness may be damaged unless the electric wire is fixed at many places.

  The present invention has been made in view of the above circumstances, and an object thereof is to realize an inexpensive electrical connection structure that can be stably insulated from the surroundings.

Means and effects for solving the problems

  The problems to be solved by the present invention are as described above. Next, means for solving the problems and the effects thereof will be described.

  According to the 1st viewpoint of this invention, the electrical connection unit material of the following structures is provided. That is, the electrical connection unit material includes a plurality of rectangular wires and a conductive member. The rectangular wire has an elongated conductor having a rectangular cross-sectional shape and an insulating layer covering the periphery of the conductor. The conductive member is attached to a plurality of the rectangular wires. Each of the rectangular wires is formed with a conductor exposed portion where the conductor is exposed without being covered with the insulating layer in a part of the length in the longitudinal direction. The plurality of conductor exposed portions are fixed to the conductive member in a state where the conductor exposed portions of the plurality of rectangular wires are arranged in contact with or close to each other.

  Thereby, an electrical connection structure can be comprised at low cost by using a rectangular wire as a path | route through which an electric current flows. Even when a large current capacity is required, it can be easily handled by using a plurality of rectangular wires. In addition, by forming a flat wire insulating layer by extruding resin, the thickness of the insulating layer can be made uniform, and stable insulating performance can be realized.

  In the electrical connection unit material, it is preferable that the conductive member has a winding portion that is wound around a portion where the conductor exposed portions of the plurality of rectangular wires are bundled.

  Accordingly, the plurality of exposed conductor portions can be bundled and fixed in a compact manner, and electrical connection at that portion can be realized.

  In the electrical connection unit material, it is preferable that the conductive member has a flat portion that contacts a portion where the conductor exposed portions of the plurality of rectangular wires are arranged in series.

  Thereby, an electroconductive member can be connected with a simple structure with respect to a some conductor exposed part.

  In the electrical connection unit material, it is preferable that the conductive member is fixed to the conductor exposed portion in a state where it is in contact with the conductor exposed portions of all the rectangular wires to be electrically connected.

  Thereby, fixation and electrical connection of all conductor exposed portions to the conductive member can be reliably performed.

  In the electrical connection unit material, it is preferable that the conductive member is fixed to a side surface of the conductor.

  Thereby, the area which fixes a conductor exposed part and an electrically-conductive member is easily securable by removing an insulating layer over suitable length.

  The electrical connection unit material preferably has the following configuration. That is, the conductor exposed portion is formed at the longitudinal end portion of each rectangular wire. The conductive member is fixed to the conductor exposed portion so that a longitudinal end portion of the conductor does not stick out of the conductive member.

  Thereby, it is possible to prevent the exposed conductor from coming out of the conductive member.

  In the said electrical connection unit material, it is preferable that the said electrically-conductive member is being fixed to the end surface of the longitudinal direction of the said conductor.

  Thereby, even when many conductor exposed parts are bundled, each conductor exposed part can be easily electrically connected to a conductive member.

  The electrical connection unit material preferably has the following configuration. That is, the cross-sectional shapes of the conductors included in the plurality of rectangular wires coincide with each other. The conductor exposed portions of the plurality of rectangular wires are arranged one-dimensionally or two-dimensionally in a state where the cross-sectional directions of the conductors coincide with each other. The direction in which the conductor exposed portions are arranged is parallel to any side of a rectangle that is a cross-sectional shape of the conductor.

  Thereby, a some conductor exposed part can be arrange | positioned collectively and can be fixed to a conductive member.

  In the electrical connection unit material, it is preferable that the plurality of rectangular wires have the same length.

  Thereby, the length of the current path can be made uniform.

  The electrical connection unit material preferably has the following configuration. That is, the intermediate portions in the longitudinal direction of the plurality of flat wires are in contact with or close to each other to form a bundle. A first bent portion and a second bent portion are formed in the bundle portion. The first bent portion bends to one side. The second bent portion bends on the opposite side to the first bent portion.

  As a result, the difference in path length is canceled out by the first bent portion and the second bent portion, so that it becomes easy to reduce the difference in length of the plurality of rectangular wires.

  The electrical connection unit material preferably includes a spacer portion that is inserted between the longitudinal intermediate portions of the plurality of rectangular wires.

  Thereby, since a gap can be formed around the flat wire by the spacer portion, it can be satisfactorily cooled by heat radiation.

  The electrical connection unit material preferably has the following configuration. That is, the plurality of flat wires constitute a flat wire group by being arranged so as to contact or approach the portions covered by the insulating layer. In the covering portion by the insulating layer, the cross section of the flat wire group appearing perpendicularly to the longitudinal direction of the flat wire group is uniform.

  Thereby, a compact configuration of the electrical connection unit material can be realized, and wiring in a narrow space is easy.

  According to the 2nd viewpoint of this invention, the electrical connection unit material set comprised by bundling two or more said electrical connection unit materials is provided.

  Thereby, a plurality of independent current paths can be realized with a compact configuration. Moreover, handling is facilitated by collecting a plurality of electrical connection units.

  The electrical connection unit material set preferably has the following configuration. That is, in each of the electrical connection unit materials, a plurality of the rectangular wires are arranged so as to contact or approach the covering portions of the insulating layer to constitute a rectangular wire group. A plurality of the rectangular wire groups are bundled to form a rectangular wire group set. A cross section of the rectangular wire group set appearing perpendicular to the longitudinal direction of the rectangular wire group set is uniform.

  Thereby, the compact structure of the electrical connection unit material set can be realized, and wiring in a narrow space is facilitated.

  In the said electrical connection unit material set, it is preferable that the length of the said flat wire is mutually equal among all the said electrical connection unit materials.

  Thereby, the length can be made uniform among a plurality of independent current paths.

The perspective view which shows the whole structure of the electrical connection unit material set which concerns on one Embodiment of this invention. The perspective view which shows the conductor and insulation layer of a flat wire which comprise an electrical connection unit material in detail. The figure which shows a mode that the conductor exposed part of a flat wire is attached to a connection terminal. The perspective view which shows the electrical-connection unit material of a 1st modification. The perspective view which shows the electrical connection unit material of a 2nd modification.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an overall configuration of an electrical connection unit material set 60 according to an embodiment of the present invention. FIG. 2 is a perspective view showing in detail the conductor 2 and the insulating layer 3 of the flat wire 1 constituting the electrical connection unit material 51. FIG. 3 is a diagram illustrating a state in which the conductor exposed portion 4 of the flat wire 1 is attached to the connection terminal 11.

  An electrical connection unit material set 60 shown in FIG. 1 is for electrically connecting two electrical components included in an automobile. The electrical connection unit material set 60 is disposed, for example, in an electrical connection box (not shown) provided in the automobile.

  The electrical connection unit material set 60 of this embodiment is used to connect a three-phase motor of an electric vehicle and an inverter that controls the three-phase motor. However, the electrical connection unit material set 60 can be used by being connected to various electrical components other than the above.

  The electrical connection unit material set 60 includes three electrical connection unit materials 51. The electrical connection unit material 51 is connected to, for example, a power distribution system of 48 volts or more and 1 ampere or more.

  The three electrical connection unit materials 51 are provided corresponding to the terminals (U, V, W) on the three-phase motor side and the terminals (R, S, T) on the inverter side. A three-phase motor can be driven by supplying three-phase alternating current from the inverter via the electrical connection unit material set 60.

  Each electrical connection unit material 51 includes a rectangular wire 1 that is elongated and a connection terminal (conductive member) 11. A plurality (four) of flat wires 1 are provided for one electrical connection unit material 51. The electric current is distributed to the four rectangular wires 1 and flows in parallel. The connection terminal 11 is disposed at the end of the flat wire 1 on one side in the longitudinal direction.

  As shown in FIG. 2, each rectangular wire 1 includes an elongated conductor 2 and an insulating layer 3.

  The conductor 2 is formed of a good electrical conductor, for example, a metal such as copper. The conductor 2 is formed so that a cross section cut perpendicular to the longitudinal direction is rectangular. In all the rectangular wires 1 provided in the electrical connection unit material set 60, the cross-sectional shape of the conductor 2 is the same.

  Various methods of manufacturing the conductor 2 are conceivable. For example, the conductor 2 can be obtained by extrusion molding or rolling a round wire. The manufacturing cost of the conductor 2 can be reduced as compared with a bus bar that requires a mold for processing for each part.

  The size of the cross-sectional rectangle of the conductor 2 is arbitrary, but it is preferable that the width is 1 mm or more and the thickness is 0.5 mm or more. Thereby, since the bending of the flat wire 1 hardly occurs, even if the vibration of the passenger car is applied to the electrical connection unit material set 60, the flat wire 1 is not greatly shaken and the conductor 2 can be prevented from being damaged.

  The insulating layer 3 is formed in a quadrangular cylindrical shape and covers the periphery of the conductor 2. The thickness of the insulating layer 3 can be several tens to several hundreds μm, for example.

  The insulating layer 3 is preferably formed by extruding an electrically insulating resin. Thereby, compared with the case where an insulating layer is formed by application | coating, for example, the uniformity of the thickness of the insulating layer 3 can be improved significantly and stable insulation can be implement | achieved.

  At one end in the longitudinal direction of each flat wire 1, the insulating layer 3 is stripped over a part of the length, and the internal conductor 2 is exposed. In the following description, a portion where the insulating layer 3 of the rectangular wire 1 is removed and the internal conductor 2 is exposed may be referred to as a conductor exposed portion 4. As described above, since the cross-sectional shape of the conductor 2 is rectangular, the conductor 2 in the portion of the conductor exposed portion 4 has a quadrangular prism shape.

  For each electrical connection unit material 51, the four rectangular wires 1 are arranged in a 2 × 2 two-dimensional manner (in a matrix) and are arranged in parallel to each other. The four rectangular wires 1 constitute a rectangular wire group. In the portion where the flat wire 1 is covered with the insulating layer 3 (the middle portion in the longitudinal direction of the flat wire 1), the four flat wires 1 constituting the flat wire group are arranged while the surfaces of the insulating layer 3 are in contact with each other. And form a bundle. Thereby, the four rectangular wires 1 can be compactly wired in a narrow space.

  In the intermediate portion in the longitudinal direction of the flat wire 1 shown in FIG. 1, a bend is formed at an appropriate portion of the portion covered with the insulating layer 3, for example, as a first bent portion 7 and a second bent portion 8. . Thereby, wiring by a complicated route becomes possible. Since the four rectangular wires 1 are bent while being bundled at the same location, the state where the four rectangular wires 1 are gathered together without a gap is maintained. In other words, as long as it is a portion covered with the insulating layer 3, the cross section of the flat wire group (in other words, the set of cross sections of the flat wire 1) is uniform no matter where it is cut in the longitudinal direction. Therefore, it is possible to prevent the wiring path by the electrical connection unit material 51 from becoming thick.

  A bundling member 21 that bundles and holds the flat wire groups of the three electrical connection unit members 51 is attached to the middle portion of the flat wire 1 in the longitudinal direction. The binding member 21 is formed into an appropriate shape from a synthetic resin.

  The configuration of the binding member 21 is arbitrary, but for example, a configuration having a pair of arms that sandwich and fix a plurality of rectangular wires 1 is conceivable. Thereby, the 12 rectangular wires 1 which comprise the electrical connection unit material set 60 can be hold | maintained in the state put together in one place. In the following description, a group of three rectangular wire groups (12 rectangular wires 1) may be referred to as a “flat wire group set”.

  The four rectangular wires 1 constituting the rectangular wire group of the electrical connection unit material 51 are all equal in length. Thereby, it is possible to prevent variations in the length of the path through which the current flows. In connection with this, as shown in FIG. 1, the bending of the bundle of the rectangular wires 1 described above is a combination of a first bent portion 7 bent to one side and a second bent portion 8 bent in the opposite direction. Contains. Thereby, since the difference in path length is canceled, the lengths of the four rectangular wires 1 can be easily aligned.

  The conductor exposed portions 4 formed on each of the four rectangular wires 1 are arranged in a 2 × 2 two-dimensional manner (in a matrix), similarly to the portion covered with the insulating layer 3. In the portion of the conductor exposed portion 4, the exposed four conductors 2 all extend in a straight line and are arranged in parallel to each other. The four conductor exposed portions 4 are arranged in a state in which the cross-sectional directions thereof all coincide. The two directions in which the conductor exposed portions 4 are arranged are parallel to any side of the rectangle that is the cross-sectional shape of the conductor 2 in the conductor exposed portion 4. In other words, the conductor exposed portions 4 are arranged in a direction parallel to any side of the rectangle that is the cross section of the conductor 2 and also arranged in a direction parallel to the side adjacent to the side.

  The connection terminal 11 is configured as a plate-like member having an appropriate thickness by a good electrical conductor (for example, metal). The connection terminal 11 is formed with a through-hole for fixing to an electrical component to be connected with, for example, a bolt.

  A winding portion 12 is integrally formed on a part of the connection terminal 11. The winding portion 12 is bent into a rectangular tube shape so that the conductor exposed portions 4 of the four rectangular wires 1 are bundled. As a result, the winding portion 12 is wound around the four conductor exposed portions 4, and in each of the four conductor exposed portions 4, the surface facing the direction perpendicular to the longitudinal direction of the conductor 2 is the inner wall of the winding portion 12. Contact with.

  In this state, the conductor exposed portions 4 of the four flat wires 1 and the inner wall of the winding portion 12 are welded. Thereby, the four conductor exposed portions 4 are mechanically fixed to the connection terminal 11 and are electrically connected. In addition, fixation between the conductor exposed part 4 and the winding part 12 may be performed by methods other than welding, for example, soldering.

  Inside the winding part 12, the four conductor exposed parts 4 are arranged close to each other with a small gap. However, the winding portion 12 may be tightly wound so that the four conductor exposed portions 4 are tightened, and the conductor exposed portions 4 may be brought into contact with each other. Further, the adjacent conductor exposed portions 4 may be fixed to each other by an appropriate method such as welding.

  The number of conductor exposed portions 4 bundled by the winding portion 12 (in other words, the number of flat wires 1 constituting the electrical connection unit material 51) is arbitrary, and may be arranged one-dimensionally or two-dimensionally. May be. When the conductor exposed portions 4 are arranged in two dimensions of M × N (in a matrix), it is preferable that at least one of M and N is two. If M and N are both 3 or more, the bundled conductor exposed portion 4 located in the center does not come into direct contact with the inner wall of the winding portion 12 and is stably fixed to the winding portion 12. This is because it becomes difficult. In this respect, since the conductor exposed portions 4 are arranged in a 2 × 2 arrangement in this embodiment, the winding portions 12 of the connection terminals 11 are in contact with all the conductor exposed portions 4 to be bundled. It is fixed to the part 4. Accordingly, it is possible to ensure the fixing strength and the stability of the electrical connection.

  The tip of the bent winding portion 12 is fixed to the connection terminal 11 by welding or the like. Thereby, the mechanical strength of the winding part 12 can be raised.

  It should be noted that the tip of the conductor exposed portion 4 does not match between the four flat wires 1 due to the processing error of forming the bend in the flat wire 1 as described above, and the position of the tip varies. There is. In this case, the winding portion 12 is arranged so that the position of the end portion in the axial direction of the winding portion 12 formed in a quadrangular cylindrical shape is aligned with the most protruding tip portion of the tip portions of the four conductor exposed portions 4. Is fixed. Accordingly, the connection terminal 11 is fixed to the conductor exposed portion 4 so that the end portion in the longitudinal direction of the flat wire 1 is not exposed from the connection terminal 11 when viewed from the direction (side surface direction) perpendicular to the longitudinal direction of the flat wire 1. Is done. Thus, since the connection terminal 11 is fixed so that the conductor exposed part 4 does not come out, the conductor exposed part 4 is prevented from protruding unevenly from the connection terminal 11 (specifically, the winding part 12). be able to.

  The inverter that drives the three-phase motor operates at a PWM carrier frequency of, for example, several kHz. When such a high-frequency alternating current is passed through the conductor, the current is concentrated and flows near the surface of the conductor, so that the alternating current resistance increases (skin effect). In this respect, in the present embodiment, since most of the four rectangular wires 1 in the longitudinal direction are electrically insulated by the insulating layer 3, a large substantial surface area can be secured. Thereby, the increase in conductor resistance can be suppressed.

  Between the three electrical connection unit members 51 constituting the electrical connection unit material set 60, the length of the flat wire group (the length of the flat wire 1) is determined to be equal to each other. Thereby, since the length of an electric path can be equalized between three phases, a three-phase motor can be favorably controlled by an inverter.

  As described above, the electrical connection unit material 51 of the present embodiment includes the four rectangular wires 1 and the connection terminals 11. The flat wire 1 has an elongated conductor 2 having a rectangular cross-sectional shape and an insulating layer 3 covering the periphery of the conductor 2. The connection terminal 11 is attached to the plurality of rectangular wires 1. Each rectangular wire 1 is formed with a conductor exposed portion 4 where the conductor 2 is exposed without being covered with the insulating layer 3 in a part of the length in the longitudinal direction. The plurality of conductor exposed portions 4 are fixed to the connection terminal 11 in a state where the conductor exposed portions 4 of the plurality of rectangular wires 1 are arranged in contact with or close to each other.

  Thereby, by using the flat wire 1 as a path through which a current flows, the electrical connection structure can be configured at a lower cost than a bus bar or the like. Even when a large current capacity is required, it can be easily handled by using a plurality of rectangular wires 1. Further, by forming the insulating layer 3 of the flat wire 1 by extruding resin, the thickness of the insulating layer 3 can be made uniform, and stable insulating performance can be realized.

  Moreover, in the electrical connection unit material 51 of this embodiment, the connection terminal 11 has the winding part 12 wound around the part where the conductor exposed parts 4 of the four rectangular wires 1 are bundled.

  Accordingly, the four conductor exposed portions 4 can be compactly bundled and fixed, and electrical connection at the portions can be realized.

  Further, in the electrical connection unit material 51 of the present embodiment, the connection terminal 11 is fixed to the conductor exposed portion 4 in a state where it is in contact with the conductor exposed portions 4 of all four rectangular wires 1 that are electrically connected. The

  As a result, all the conductor exposed portions 4 can be fixed and electrically connected to the connection terminals 11 with certainty.

  In the electrical connection unit material 51 of the present embodiment, the connection terminal 11 is fixed to a surface (in other words, a side surface of the conductor 2) that faces in a direction perpendicular to the longitudinal direction of the conductor 2.

  Thereby, the area which fixes the conductor exposure part 4 and the connecting terminal 11 is easily securable by removing the insulating layer 3 over suitable length.

  Moreover, in the electrical connection unit material 51 of this embodiment, the conductor exposed part 4 is formed in the longitudinal direction edge part of each rectangular wire 1. FIG. The connection terminal 11 is fixed to the conductor exposed portion 4 so that the longitudinal end portion of the conductor 2 does not protrude from the connection terminal 11 (winding portion 12).

  Thereby, it can prevent that the conductor exposed part 4 sticks out from the connection terminal 11 unevenly.

  Moreover, in the electrical connection unit material 51 of this embodiment, the cross-sectional shapes of the conductors 2 included in the four rectangular wires 1 coincide with each other. The conductor exposed portions 4 of the plurality of rectangular wires 1 are two-dimensionally arranged in a state in which the cross-sectional directions of the conductors 2 coincide with each other. The direction in which the conductor exposed portions 4 are arranged is parallel to any side of the rectangle that is the cross-sectional shape of the conductor 2.

  Thereby, the plurality of conductor exposed portions 4 can be arranged in a small size and fixed to the connection terminal 11.

  Moreover, in the electrical connection unit material 51 of this embodiment, all the four flat wires 1 are equal in length.

  Thereby, the length of the current path can be made uniform.

  Further, in the electrical connection unit material 51 of the present embodiment, the middle portions in the longitudinal direction of the four rectangular wires 1 are in contact with each other to form a bundle. A first bent portion 7 and a second bent portion 8 are formed in the bundle portion. The first bent portion 7 bends to one side. The second bent portion 8 bends on the opposite side to the first bent portion 7.

  Thereby, since the difference in the path length of the flat wire 1 is canceled by the two bent portions, it becomes easy to match the lengths of the four flat wires 1.

  Note that a spacer portion having an appropriate shape that is inserted between the flat wires 1 may be formed in the binding member 21 of the electrical connection unit material 51. In this case, a gap corresponding to the size of the spacer portion is formed between the insulating layers 3 of the four flat wires 1. The four flat wires 1 are arranged close to each other with a gap.

  In this structure, since a gap can be formed around the rectangular wire 1 by the spacer portion, it can be cooled well by heat radiation.

  Further, in the electrical connection unit material 51 of the present embodiment, the four flat wires 1 are arranged so as to contact the covering portion of the insulating layer 3 to form a flat wire group. In the portion covered with the insulating layer 3, the cross section of the flat wire group appearing perpendicular to the longitudinal direction of the flat wire group is uniform.

  Thereby, the compact structure of the electrical connection unit material 51 is realizable, and it is easy to wire in a narrow space.

  Moreover, the electrical connection unit material set 60 of the present embodiment is configured by bundling a plurality of electrical connection unit materials 51.

  Thereby, the three current paths between the inverter and the three-phase motor can be realized with a compact configuration. Moreover, handling becomes easy by collecting the plurality of electrical connection unit members 51 together.

  Further, in the electrical connection unit material set 60 of the present embodiment, the flat wire group consisting of the four flat wires 1 is bundled by the binding member 21 to form a flat wire group set consisting of the 12 flat wires 1. ing. The cross section of the flat wire group set appearing perpendicularly to the longitudinal direction of the flat wire group set is uniform.

  Thereby, the compact structure of the electrical connection unit material set 60 is realizable, and it becomes easy to wire in a narrow space.

  Moreover, in the electrical connection unit material set 60 of this embodiment, the length of the flat wire 1 is equal among all the electrical connection unit materials 51.

  Thereby, the length can be made uniform among a plurality of independent current paths.

  Next, a modification of the above embodiment will be described. FIG. 4 is a perspective view showing an electrical connection unit material 51a of a first modification. FIG. 5 is a perspective view showing an electrical connection unit material 51b of a second modification. In the description of the first modification and the second modification, the same or similar members as those in the above-described embodiment may be denoted by the same reference numerals in the drawings, and description thereof may be omitted.

  The electrical connection unit material 51a of the first modification shown in FIG. 4 is different from the above-described embodiment in that the winding portion 12 is not formed on the connection terminal 11.

  In this electrical connection unit material 51 a, the surface on one side in the thickness direction of the connection terminal 11 is configured as a flat plane portion 13. A plurality of conductor exposed portions 4 of the flat wire 1 arranged in a one-dimensional direction are fixed to the flat portion 13 by welding or the like. The exposed conductors 4 arranged in series are close to each other with a small gap.

  In this modification, since the process for forming the winding part 12 can be omitted, the manufacturing cost of the connection terminal 11 can be reduced.

  The electrical connection unit material 51 b of the second modification shown in FIG. 5 also has no winding part 12 formed on the connection terminal 11. Further, the length of the conductor exposed portion 4 formed on the flat wire 1 is shorter than that of the above-described embodiment.

  The connection terminal 11 is formed with a bent portion 14 bent vertically. A surface on one side in the thickness direction of the bent portion 14 is fixed to an end surface on one side in the longitudinal direction of the conductor 2 exposed at the conductor exposed portion 4.

  In the second modification, the end face in the longitudinal direction of the conductor 2 is fixed to the connection terminal 11 in each conductor exposed portion 4. In FIG. 5, the conductor exposed portions 4 (rectangular wires 1) form a 2 × 5 two-dimensional array. However, even when this is a 3 × 3 two-dimensional array, for example, the exposed conductors located at the bundled center are exposed. The part 4 can be easily fixed to the connection terminal 11.

  As described above, in the electrical connection unit material 51a of the first modification shown in FIG. 4, the connection terminal 11 contacts the portion where the conductor exposed portions 4 of the plurality of rectangular wires 1 are arranged in series. A flat portion 13 is provided.

  Thereby, the electrical connection unit material 51a of a simple structure can be provided.

  Moreover, in the electrical connection unit material 51b of the 2nd modification shown in FIG. 5, the conductor exposed part 4 has exposed the end surface of the longitudinal direction of the conductor 2 in each rectangular wire 1. FIG. A connection terminal 11 is fixed to the end face of the conductor 2.

  Thereby, even when the conductor exposed portions 4 are variously arranged, the connection terminals 11 can be easily fixed to the conductor exposed portions 4.

  The preferred embodiments and modifications of the present invention have been described above, but the above configuration can be modified as follows, for example.

  The flat wire 1 may have a configuration in which an intermediate layer (for example, an enamel layer) is formed between the conductor 2 and the insulating layer 3.

  The number of the rectangular wires 1 constituting one electrical connection unit material 51 is arbitrary as long as it is plural, and may be any number. For example, in the electrical connection unit material 51 shown in FIG. 1, the three conductor exposed portions 4 are arranged one-dimensionally (in other words, in a line in series), and the winding portion 12 is wound around and fixed thereto. be able to. By increasing the number of the rectangular wires 1, the current capacity can be increased to easily cope with applications at high voltage / large current.

  The shape and size of the connection terminal 11 can be arbitrarily changed. For example, in the electrical connection unit material 51 shown in FIG. 1, a plurality of winding portions 12 may be formed on one connection terminal 11.

  A bent portion perpendicular to the connection terminal 11 is formed, and in the conductor exposed portion 4, both the surface facing the direction perpendicular to the longitudinal direction of the conductor 2 and the end surface in the longitudinal direction of the conductor 2 are fixed to the connection terminal 11. May be.

  In the second modification of FIG. 5, the conductor exposed portions 4 may be arranged and fixed not only on one side of the connection terminal 11 but also on both sides.

  The connection terminal 11 may be provided only at the end portion on one side in the longitudinal direction of the flat wire group including the plurality of flat wire wires 1 or may be provided at the end portions on both sides.

  The shape of the binding member 21 is arbitrary, and may be configured in a ring shape, for example. Further, for example, twelve rectangular wires 1 may be bound using an adhesive tape as a binding member.

  The electrical connection unit materials 51, 51a, 51b are not part of the electrical connection unit material set 60, and may be used alone.

  The electrical connection unit material set 60 may be configured by two or four or more electrical connection unit materials 51, 51a, 51b.

  A plurality of binding members 21 may be provided in the electrical connection unit material set 60. Further, one bundling member 21 may be provided for one electrical connection unit material 51 and may be configured to hold four rectangular wires 1.

  The electrical connection unit material 51 and the electrical connection unit material set 60 are not limited to an electric vehicle, and can be applied to, for example, a hybrid vehicle.

DESCRIPTION OF SYMBOLS 1 Flat wire 2 Conductor 3 Insulating layer 4 Conductor exposed part 11 Connection terminal (conductive member)
12 Winding part 13 Plane part 51 Electrical connection unit material 60 Electrical connection unit material set

Claims (15)

A plurality of rectangular wires having an elongated conductor having a rectangular cross-sectional shape and an insulating layer covering the periphery of the conductor;
A conductive member attached to the plurality of rectangular wires;
With
Each of the rectangular wires is formed with a conductor exposed portion where the conductor is exposed without being covered with the insulating layer in a part of the length in the longitudinal direction,
An electrical connection unit material, wherein a plurality of the conductor exposed portions are fixed to the conductive member in a state where the conductor exposed portions of the plurality of rectangular wires are arranged in contact with or close to each other. The electrical connection unit material according to claim 1,
The electrical connection unit material, wherein the conductive member has a winding portion wound around a portion where the conductor exposed portions of the plurality of rectangular wires are bundled. The electrical connection unit material according to claim 1,
The electrical connection unit material, wherein the conductive member has a flat portion that contacts a portion where the conductor exposed portions of the plurality of rectangular wires are arranged in series. The electrical connection unit material according to any one of claims 1 to 3,
The electrical connection unit material, wherein the conductive member is fixed to the conductor exposed portion in contact with the conductor exposed portions of all the rectangular wires to be electrically connected. The electrical connection unit material according to any one of claims 1 to 4,
The electrical connection unit material, wherein the conductive member is fixed to a side surface of the conductor. The electrical connection unit material according to claim 5,
The conductor exposed portion is formed at the longitudinal end of each of the rectangular wires,
The electrical connection unit material, wherein the conductive member is fixed to the conductor exposed portion such that a longitudinal end portion of the conductor does not protrude from the conductive member. The electrical connection unit material according to any one of claims 1 to 4,
The electrical connection unit material, wherein the conductive member is fixed to an end face in a longitudinal direction of the conductor. The electrical connection unit material according to any one of claims 1 to 7,
The cross-sectional shapes of the conductors that the plurality of rectangular wires have are identical to each other,
The conductor exposed portions of the plurality of rectangular wires are arranged one-dimensionally or two-dimensionally in a state where the cross-sectional orientations of the conductors coincide with each other,
The direction in which the conductor exposed portions are arranged is parallel to any side of a rectangle that is a cross-sectional shape of the conductor. The electrical connection unit material according to any one of claims 1 to 8,
The electrical connection unit material, wherein the plurality of rectangular wires are all equal in length. The electrical connection unit material according to any one of claims 1 to 9,
The longitudinal intermediate portions of the plurality of rectangular wires are in contact with each other or close to each other to form a bundle,
In the bundle part,
A first bend that bends to one side;
A second bent portion that bends opposite to the first bent portion;
An electrical connection unit material characterized in that is formed. The electrical connection unit material according to any one of claims 1 to 10,
An electrical connection unit material comprising a spacer portion inserted between the longitudinal intermediate portions of the plurality of flat wires. The electrical connection unit material according to any one of claims 1 to 11,
The plurality of flat wires constitute a flat wire group arranged so as to be in contact with or in close proximity to the portion covered by the insulating layer,
An electrical connection unit material characterized in that a cross section of the flat wire group appearing perpendicularly to a longitudinal direction of the flat wire group is uniform in a covering portion by the insulating layer.   An electrical connection unit material set comprising a plurality of electrical connection unit materials according to any one of claims 1 to 12 bundled together. The electrical connection unit material set according to claim 13,
In each of the electrical connection unit materials, the plurality of rectangular wires are arranged so as to contact or approach the covering portion by the insulating layer to constitute a rectangular wire group,
A plurality of the flat wire groups are bundled to form a flat wire group set,
An electrical connection unit material set characterized in that a cross section of the rectangular wire group set appearing perpendicularly to the longitudinal direction of the rectangular wire group set is uniform. The electrical connection unit material set according to claim 14,
The length of the flat wire is equal among all the electrical connection unit materials, the electrical connection unit material set.

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