JP2011187167A - Connection terminal for thin plate laminated conductor, connection structure for thin plate laminated conductor, and connection method for thin plate laminated conductor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection terminal for a thin plate laminated conductor, easily and surely connecting the thin-plate laminated conductor to equipment. <P>SOLUTION: A connection structure 1 for the thin plate laminated conductor includes a bus duct 10, a casing 20 connected to the bus duct 10 through a bus duct connection part 15, and a conductor connecting terminal 30 arranged in the casing 20, wherein a conductor 12 stored in the bus duct 10 is connected to the conductor connecting terminal 30. The conductor connecting terminal 30 includes a fixing part 33 provided with a hole part 35 into which a conductor part 14 is inserted, and pressure-fitting and fixing the conductor part 14 inserted into the hole part, and a connecting part 31 connecting the fixing part electrically to a connected conductor 23. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a connection terminal for a thin laminated conductor, a connection structure for a thin laminated conductor, and a connection method for a thin laminated conductor, and in particular, a connection terminal for a thin laminated conductor used in a connection portion between a thin laminated conductor and a switchboard, a transformer, etc. The present invention relates to a connection structure for a thin laminated conductor and a connection method for a thin laminated conductor.

  Conventionally, when connecting a bus duct to a switchboard or the like, a bus bar attached to the end of the bus duct is connected to a bus duct connection conductor provided in the switchboard. Also, when connecting bus ducts, the conductors of the two bus ducts are bent into male and female shapes, respectively, and the conductors are directly connected to each other, or bus bars are attached to the ends of the two bus ducts, respectively. The bus bars are connected directly or via other conductors (see, for example, Patent Documents 1 and 2).

  By the way, the conductor of the bus duct is usually composed of a long thick plate having a thickness of 6 to 10 mm, a width of 15 to 300 mm, and a length of 3 to 6 m, and is not flexible. Some bus ducts laid in a letter shape or an L shape have flexibility in a conductor (see, for example, Patent Document 2). In the future, in order to facilitate the laying operation of the bus duct or to cope with the diversification of the laying place, it is conceivable to further expand the flexible portion.

  As a configuration for imparting flexibility to the conductor of the bus duct, a thin plate laminated conductor in which a plurality of long thin plates are laminated can be considered. In this case, it is necessary to connect the thin plate laminated conductor to a switchboard or the like. Become.

JP 2006-121866 A JP 2002-233039 A JP 2006-149133 A

  When using a conventional thick-plate bus duct, the conductor is bent in advance or a bus bar is attached in advance to the end of the bus duct to perform connection work on site. However, when a flexible conductor is used, terminal processing at the site may be required due to diversification of laying locations. At this time, when attaching the bus bar to the terminal, on-site drilling or the like is required, and there is a problem that the work is complicated. In addition, when bending a conductor into a male or female shape, the bending process is performed at a very short distance. Therefore, in a bus duct having a thin laminated conductor, a thin plate positioned on the outside and an inner side Deviation occurs between the thin plates located. As a result, a cutting process for aligning the end faces of the thin laminated conductors becomes necessary, and the work is complicated. In order to solve this problem, a method of welding a thick bus bar that has been plated or drilled in advance to the thin laminated conductor is also conceivable, but there are many cases where there are restrictions on the welding work at the installation site. The method is not suitable for on-site connection work.

  An object of the present invention is to provide a thin laminated conductor connecting terminal, a thin laminated conductor connecting structure, and a thin laminated conductor connecting method capable of easily and reliably connecting a thin laminated conductor to an apparatus.

  In order to achieve the above object, a thin laminated conductor terminal according to the present invention is provided with a hole into which a plurality of laminated thin conductors are inserted, and the plurality of thin conductors inserted into the holes are crimped. And a connecting portion for electrically connecting the fixing portion to the conductor to be connected.

  Moreover, the said hole part is provided in multiple steps in the thickness direction of the said fixing | fixed part.

  In addition, a plurality of the hole portions are provided in the width direction of the fixed portion.

  Further, the fixing portion is formed integrally with the connection portion.

  Further, the thin laminated conductor terminal is composed of a plate-like conductor having a stepped shape including a thick plate portion and a thin plate portion, the thick plate portion is constituted by the fixed portion, and the thin plate portion is It is characterized by comprising a connection part.

  Moreover, the cross-sectional shape of the hole is a flat rectangle or a flat ellipse.

  In order to achieve the above object, a connection structure for thin plate laminated conductors according to the present invention comprises a plurality of laminated thin plate conductors and a conductor connection terminal to which the plurality of thin plate conductors are connected. The terminal is provided with a hole portion into which the plurality of thin plate conductors are inserted, and a fixing portion that crimps and fixes the plurality of thin plate conductors inserted into the hole portion, and the fixing portion is electrically connected to the connected conductor. And a connecting portion to be connected.

  The thin laminated conductor connection structure further includes a housing connected to the conductor housing portion, and the conductor connection terminals are housed in the housing.

  In addition, a compound is interposed between the plurality of thin plate conductors and the conductor connection terminals.

  In order to achieve the above object, a connection method for thin laminated conductors according to the present invention is a connection method for thin laminated conductors in which a plurality of laminated thin conductors are connected to a connected conductor, and the plurality of thin conductors are connected to each other. The conductor connection terminal is inserted into the hole provided in the conductor connection terminal, the conductor connection terminal is pressed in a state where the plurality of thin plate conductors are inserted into the hole, and the plurality of thin plate conductors are pressed into the conductor connection terminal. The conductor connection terminals are electrically connected to the conductors to be connected.

  Further, in the connection method for thin plate laminated conductors, a compound is applied to outer surfaces of the plurality of thin plate conductors, and the plurality of thin plate conductors coated with the compound are inserted into the hole portions.

  According to the connection terminal for thin plate laminated conductor and the connection structure for thin plate laminated conductor according to the present invention, the hole portion into which the plurality of laminated thin plate conductors are inserted is provided in the fixed portion, and the plurality of thin plates inserted into the hole portion The conductor is fixed by crimping at the fixing portion. And a fixed part is electrically connected to a to-be-connected conductor. Thereby, a thin laminated conductor can be connected to an apparatus easily and reliably.

  Moreover, according to the connection method for thin plate laminated conductors according to the present invention, the plurality of laminated thin plate conductors are inserted into holes provided in the connection terminals for conductors. Then, the conductor connection terminal is pressed in a state where the plurality of thin plate conductors are inserted into the hole, the plurality of thin plate conductors are crimped and fixed to the conductor connection terminal, and the conductor connection terminal is further connected to the outside of the housing. It is electrically connected to the conductor to be connected introduced from. Thereby, a thin laminated conductor can be connected to an apparatus easily and reliably.

It is a top view which shows roughly the connection structure for thin-plate laminated conductors concerning embodiment of this invention. It is a side view which shows roughly the connection structure for thin-plate laminated conductors of FIG. It is a figure which shows the connection terminal for conductors in FIG. 1, (a) is a perspective view which shows a structure, (b) is a perspective view which shows the state by which the conductor part was fixed to the connection terminal for conductors. FIGS. 3A and 3B are diagrams illustrating a configuration of the fixing portion, in which FIG. 3A is an example of a dimension of the fixing portion 33, and FIG. 3B is a cross-sectional view of the fixing portion 33 in a pressed state; It is a figure which shows the modification of the bus duct in FIG. It is a figure which shows the state by which the conductor part of the bus duct in FIG. 5 was connected to the connection terminal for conductors. It is a perspective view which shows the modification of the connection terminal for conductors of FIG. It is a figure which shows the state by which the conductor part was connected to the connection terminal for conductors of FIG. 7, (a) is the state where the conductor part in FIG. 3 was connected, (b) is the state where the conductor part in FIG. 6 was connected. Respectively. It is a perspective view which shows the other modification of the connection terminal for conductors of FIG.

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

  FIG. 1 is a plan view schematically showing a connection structure for thin laminated conductors according to an embodiment of the present invention, and FIG. 2 is a side view schematically showing the connection structure for thin laminated conductors of FIG. .

  1 and 2, the thin laminated conductor connection structure 1 includes a bus duct 10, a housing 20 connected to the bus duct 10 via a bus duct connection portion 15, a housing 20, and the bus duct 10. A conductor connection terminal (a thin laminated conductor terminal) 30 to which a later-described conductor portion 14 to be configured is connected is provided.

  The bus duct 10 includes a housing (conductor accommodating portion) 11 and a conductor 12 accommodated in the housing 11. The housing 11 is fixed to the bus duct connecting portion 15 by fixing bolts 16. The conductor 12 is composed of three parallel conductors corresponding to three phases (R, S, and T phases), and the three conductors extend in the housing 20 with a space therebetween. Each conductor has an insulating coating 13 and a conductor portion 14 that is inserted into a hole to be described later in an exposed state.

  The housing 20 includes a housing body 21 and a fixing bolt 22 that fixes the bus duct connection portion 15 to the housing body 21.

  The conductor portion 14 of the three-phase conductor 12 is composed of a plurality of laminated thin plate conductors (hereinafter referred to as “multiple thin plate conductors” or simply “conductor portions”), and one thin plate conductor is For example, the width is 150 mm and the thickness is 0.5 to 2.0 mm, preferably 0.5 to 1.0 mm or less, and is formed of a metal such as copper or aluminum. Preferably, each of the conductor portions 14 is composed of 2 to 10 thin plate conductors having a thickness of 1.0 mm, more preferably 2 to 3 sheets.

  3A and 3B are diagrams illustrating the conductor connection terminal 30 in FIG. 1. FIG. 3A is a perspective view illustrating the configuration of the conductor connection terminal 30, and FIG. 3B is a diagram illustrating the conductor 14 fixed to the conductor connection terminal 30. FIG.

  As shown in FIG. 3A, the conductor connection terminal 30 is provided with a hole portion 35 into which the conductor portion 14 is inserted, and a fixing portion 33 for fixing the conductor portion 14 inserted into the hole portion by pressure bonding. , And a connection portion 31 that electrically connects the fixed portion to the conductor to be connected 23. The conductor connection terminal 30 is composed of a plate-like conductor having a stepped shape including a thick plate portion and a thin plate portion, the thick plate portion is constituted by a fixed portion 33, and the thin plate portion is constituted by a connection portion 31. Has been. In the present embodiment, the fixing portion 33 is formed integrally with the connection portion 31, and is formed of a metal such as copper or aluminum, for example.

  The hole portion 35 is provided on the side surface 34 of the fixed portion 33, and the cross-sectional shape perpendicular to the direction in which the conductor portion 14 is inserted is a flat rectangle. Thereby, it becomes easy to insert the conductor part 14, and workability | operativity improves. The depth of the hole portion 35 is designed to have a dimension capable of ensuring a contact area that realizes good electrical connection with the conductor portion 14, and is, for example, 50 to 100 mm.

  The fixing portion 33 fixes the conductor portion 14 to the hole portion 35 by plastic deformation when the main surface is pressed from the outside. That is, the thickness of the periphery of the hole 35 in the fixed portion 33 is designed to a dimension that allows the plurality of thin plate conductors inserted into the hole 35 to be crimped to the fixed portion 33 by plastic deformation. 5 mm.

  Long holes 32 are formed in the connecting portion 31 at predetermined intervals. In the present embodiment, six long holes are formed in an arrangement of 2 × 3. The thickness of the connection part 31 is designed to a dimension suitable for the allowable current of the bus duct 10 and is, for example, 6 to 16 mm. The connecting portion 31 is joined to the connected conductor 23 by a joining member 24 including a fixing bolt, a washer, and a fixing nut through a long hole 32 and a hole (not shown) provided in the connected conductor 23.

  4A and 4B are diagrams illustrating the configuration of the fixing portion 33 in FIGS. 3A and 3B, in which FIG. 4A is an example of the dimensions of the fixing portion 33, and FIG. A cross-sectional view is shown.

  As shown in FIG. 4A, in the fixing portion 33, the outer methods A and B are 165 mm and 16 mm, respectively, and the inner methods a and b are 155 mm and 7.0 mm, respectively. At this time, the thickness around the hole 35 is 4.5 mm and 5.0 mm. When the fixing portion 33 is designed to have the above dimensions, for example, six thin plate conductors having a thickness of 1 mm are inserted into the hole portion 35.

  In a state where the conductor portion 14 is fixed to the conductor connection terminal 30, a substantially rectangular recess 36 is formed on the main surface of the fixing portion 33 (FIGS. 3B and 4B). The recess 36 is formed, for example, by pressing the main surface of the fixing portion 33 with a male-side protrusion while the conductor connection terminal 30 is placed on a female-side crimping die such as a crimping tool. When using a crimping tool having a projection having the same dimensions as the width and depth of the hole 35, the conductor 14 is crimped to the conductor connection terminal 30 by a single caulking operation. The conductor portion 14 may be crimped to the conductor connection terminal 30 by a plurality of caulking operations. By this so-called caulking, the entire main surface of the conductor portion 14 is pressed against the main surface of the fixing portion 33, and the conductor portion 14 is firmly fixed to the conductor connection terminal 30. Thereby, the tensile strength can be improved and water can be prevented from entering the hole 35.

  Next, a thin plate laminated conductor connection method executed using the conductor connection terminals 30 will be described.

  First, the bus duct connecting portion 15 is attached to the end portion of the bus duct 10, and the insulation coating 13 of each conductor in the conductor 12 is peeled off to expose a plurality of thin plate conductors (conductor portions 14). At this time, when the plurality of thin plate conductors are made of aluminum, the film removing compound is applied to the surface of each thin plate conductor, and then the plurality of thin plate conductors are laminated. At this time, the compound is interposed between two adjacent thin plate conductors. Thereby, it is possible to remove the oxide film formed on the surface of each thin plate conductor and to conduct electricity satisfactorily.

  Next, a plurality of thin plate conductors are inserted into the hole portions 35 of the conductor connection terminals 30. Then, with the plurality of thin plate conductors inserted into the holes 35, the conductor connection terminals 30 are pressed with a crimping tool, and the plurality of thin plate conductors are caulked and crimped to the conductor connection terminals 30 to be fixed. At this time, the compound is interposed between the conductor portion 14 and the conductor connection terminal 30, specifically, the pressure contact surface between the conductor portion 14 and the conductor connection terminal 30 by the coating process. As a result, the oxide film formed on the pressure contact surface can be removed and good current can be supplied.

  Thereafter, the main surface of the connected conductor is brought into contact with the main surface of the connecting portion 31, and the connecting portion 31 is joined to the connected conductor 23 by the joining member 24. Thus, the conductor connection terminal 30 is electrically connected to the connected conductor 23. If the connected conductor 23 is a terminal connected to a device such as a switchboard or a transformer, for example, a long hole suitable for the size of the hole provided in the device terminal is formed in the connection portion 31 in advance, After adjusting the lengths of the plurality of thin plate conductors, the connecting portion 31 is joined to the connected conductor 23. As a result, even when the bus duct is connected to a device such as a transformer that generates vibrations, the conductor portion 14 itself has flexibility, so there is no need to connect via another terminal having flexibility.

  After performing the joining process, the bus duct connecting portion 15 is fixed to the housing body 21 by the fixing bolt 22. As a result, the conductor portion 14, the conductor connection terminal 30, and the connected conductor 23 are accommodated in the housing body 21.

  As described above, according to the present embodiment, the hole portion 35 into which the conductor portion 14 is inserted is provided in the fixing portion 33, and the conductor portion 14 inserted into the hole portion 35 is crimped by the fixing portion 33. Fixed. Then, the connection portion 31 is electrically connected to the connected conductor 23. Thereby, the conductor part 14, ie, a thin laminated conductor, can be connected to an apparatus easily and reliably.

  FIG. 5 is a view showing a modification of the bus duct 10 in FIG. 1, and FIG. 6 is a view showing a state where the conductor portion of the bus duct in FIG. 5 is connected to the conductor connection terminal 30.

  As shown in FIG. 5, the bus duct 50 includes a first conductor 51 composed of three parallel conductor portions, a first conductor accommodating portion 54 that accommodates the first conductor 51, and three parallel conductor portions. A second conductor 52 configured by the second conductor 52, a second conductor accommodating portion 55 that accommodates the second conductor 52, and a housing 53 that couples the first and second conductor accommodating portions 54 and 55 to each other. The bus duct 50 has two conductor portions corresponding to each phase, and is used as a large-capacity bus duct. The first conductor 51 has an insulating coating 56 and a conductor portion 57 that is covered with the insulating coating 56 and has an end portion introduced into the housing 20. Similarly, the second conductor 52 includes an insulating coating 58 and a conductor portion 59 that is covered with the insulating coating and has an end portion introduced into the housing 20.

  When the bus duct 50 is connected, as shown in FIG. 6, the main surface of the fixing portion 33 is pressed in a state where the conductor portions 57 and 59 are inserted into the hole portions 35, and the A recess 36 is formed. Thereby, the entire main surfaces of the conductor portions 57 and 59 are pressed against the main surface of the fixing portion 33, and the conductor portions 57 and 59 are fixed to the conductor connection terminal 30. In this case, since the plurality of in-phase conductor portions are connected by one conductor connection terminal, the in-phase short circuit can be easily performed, and the load can be balanced.

  7 is a perspective view showing a modification of the conductor connection terminal 30 in FIG. 3, and FIG. 8 is a view showing a state in which a conductor portion is connected to the conductor connection terminal 70 in FIG. ) Shows a state where the conductor portion 14 in FIG. 3 is connected, and FIG. 6B shows a state where the conductor portions 57 and 59 in FIG. 6 are connected. 7 is basically the same in configuration as the conductor connection terminal in FIG. 3, and the same components are denoted by the same reference numerals and redundant description is omitted. The part will be explained.

  7 and 8A, the conductor connection terminal 70 is provided with holes 75 and 76 into which the conductor portions 14a and 14b are inserted, and the conductor portions 14a and 14b inserted into the holes are crimped. A fixing portion 73 for fixing is provided. The holes 75 and 76 are arranged side by side on the side surface 74 of the fixed portion 73, and each cross-sectional shape thereof is a flat rectangle. When the number of thin plate conductors constituting the conductor portion 14 is large, the conductor portion 14 is divided into a conductor portion 14a and a conductor portion 14b, and the conductor portions 14a and 14b are inserted into the hole portions 75 and 76, respectively, and crimped. To do. In a state where the conductor portions 14 a and 14 b are fixed to the conductor connection terminal 70, a substantially rectangular concave portion 77 is formed on the main surface of the fixing portion 73. Thereby, the conductor part 14 can be reliably crimped | fixed to the connection terminal for conductors.

  When the conductor portions 57 and 59 in FIG. 6 are connected, the conductor portion 57 is divided into a conductor portion 57a and a conductor portion 57b, and the conductor portions 57a and 57b are inserted into the hole portions 75 and 76, respectively, and crimped. To do. Further, the conductor portion 59 is divided into a conductor portion 59a and a conductor portion 59b, and the conductor portions 59a and 59b are inserted into the hole portions 75 and 76, respectively, and are crimped (FIG. 8B). As a result, when connecting a large capacity bus duct, the conductor portions 57 and 59 can be securely crimped and fixed to the conductor connection terminal 70.

  FIG. 9 is a perspective view showing another modification of the conductor connection terminal 30 of FIG.

  9, the conductor connection terminal 90 is provided with holes 95, 96, 97, 98 into which the conductors 57a, 57b, 59a, 59b are inserted, and the conductors 57a, 57b, 59a inserted into the holes. , 59b are fixed and fixed. The holes 95, 96, 97, and 98 are provided on the side surface 94 of the fixed portion 93, and each cross-sectional shape thereof is a flat rectangle. Thus, when connecting a large capacity bus duct, the conductor portions 57a, 57b, 59a, 59b can be securely crimped and fixed to the conductor connection terminal 70, and in addition to the holes 95, 96, 97, 98. Ingress of water can be prevented. In the conductor connection terminal 90, four holes are provided in the side surface 94 of the fixing portion 93 in a two-stage × two-row arrangement. A plurality of holes may be provided in other arrangements such as stages × 2 rows, 3 rows × 3 rows, and the like. Further, a plurality of holes may be provided in the thickness direction of the fixing portion 93, or a plurality of holes may be provided in the width direction of the fixing portion 93.

  In the present embodiment, the cross-sectional shape of the hole 35 is a flat rectangle, but is not limited to this, and may be a flat ellipse. Further, the hole 35 may have any cross-sectional shape as long as it has an opening area into which the inserted conductor 14 can be inserted.

  In the present embodiment, when a plurality of thin plate conductors are formed of aluminum, the film removing compound is applied to the surface of each thin plate conductor, but the present invention is not limited to this. After forming a conductor portion 14 by laminating a plurality of thin plate conductors, a compound may be applied to the outer surface of the conductor portion 14. As a result, the oxide film formed on the pressure contact surface between the conductor portion 14 and the conductor connection terminal 30 can be removed and the current can be satisfactorily supplied while simplifying the coating process.

  In the present embodiment, the structure in which the bus duct 10 is connected using the conductor connection terminal 30 has been described. However, since the conductor 12 has flexibility, the conductor 12 is placed at a place where a conventional cable is used. It is also possible to apply and use this connection structure for the connection part.

DESCRIPTION OF SYMBOLS 1 Connection structure for thin laminated conductors 10 Bus duct 12 Conductor 14 Conductor portion 15 Bus duct connection portion 20 Housing 23 Connected conductor 30 Conductor connection terminal 31 Connection portion 33 Fixing portion 35 Hole portion

Claims (11)

A hole portion into which a plurality of laminated thin plate conductors are inserted is provided, and a fixing portion that crimps and fixes the plurality of thin plate conductors inserted into the hole portions,
A thin laminated conductor terminal, comprising: a connecting portion that electrically connects the fixed portion to a conductor to be connected.   The thin hole laminated conductor terminal according to claim 1, wherein the hole is provided in a plurality of stages in the thickness direction of the fixed portion.   The thin plate laminated conductor terminal according to claim 1, wherein a plurality of the hole portions are provided in a width direction of the fixed portion.   4. The thin laminated conductor terminal according to claim 1, wherein the fixing portion is formed integrally with the connection portion. 5.   It is composed of a plate-like conductor having a stepped shape including a thick plate portion and a thin plate portion, the thick plate portion is constituted by the fixed portion, and the thin plate portion is constituted by the connecting portion. The thin-film laminated conductor terminal according to claim 4.   6. The thin laminated conductor terminal according to claim 1, wherein a shape of a cross section of the hole portion perpendicular to the insertion direction of the thin conductor is a flat rectangle or a flat ellipse. . A plurality of laminated thin plate conductors;
A conductor connection terminal to which the plurality of thin plate conductors are connected;
The conductor connection terminal includes a fixing portion that is provided with a hole portion into which the plurality of thin plate conductors are inserted, and that fixes the plurality of thin plate conductors inserted into the hole portion, and the fixing portion is connected to the conductor. A connection structure for a thin laminated conductor, comprising: a connection portion electrically connected to the substrate. A housing connected to the conductor housing;
The connection structure for a thin laminated conductor according to claim 7, wherein the conductor connection terminal is accommodated in the housing.   8. The thin laminated conductor connection structure according to claim 7, wherein a compound is interposed between the plurality of thin conductors and the conductor connection terminal. A connection method for thin laminated conductors, wherein a plurality of laminated thin conductors are connected to a connected conductor,
Insert a plurality of thin plate conductors into the hole provided in the conductor connection terminal,
The conductor connection terminal is pressed in a state where the plurality of thin plate conductors are inserted into the hole, and the plurality of thin plate conductors are crimped and fixed to the conductor connection terminals,
A connection method for a thin laminated conductor, wherein the conductor connection terminal is electrically connected to a conductor to be connected.   11. The connection method for thin plate laminated conductors according to claim 10, wherein a compound is applied to the outer surface of the plurality of thin plate conductors, and the plurality of thin plate conductors coated with the compound are inserted into the hole portions.

Images