JP2012185906A - Bushing terminal cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bushing terminal cover capable of preventing a leakage current from flowing through a case of an electric device if salt damage occurs.SOLUTION: First and second cover half parts 401 and 402 coupled to each other in a freely openable/closable manner via a hinge part 400 constitute a cover 403. The cover 403 integrally comprises: a cover main part 403a covering a terminal part 103a of a terminal conductor 103 of a bushing terminal 1 and a portion, which is close to the terminal part, of an electric wire 3 connected to the terminal part; an annular cover terminal part 403b which surrounds an outer periphery of a flange part 103b of the terminal conductor; a positioning part 403c which engages, for positioning, with an end face in an axial direction of the flange part 103b of the terminal conductor; and an electric wire coating part 403d which covers an outer periphery of the electric wire 3 led out from the cover main part 403a to the outside. A length in the axial direction of the cover terminal part is so set that a gap is formed between the cover terminal part 403b and an umbrella part 101a at a tip of a bushing.

Description

  The present invention relates to a bushing terminal cover that covers a charging part of a bushing terminal attached to a case of an electric device such as an automatic voltage regulator.

  In electrical equipment such as automatic voltage regulators, workers accidentally touched the charging part of the bushing terminal and caused an electric shock, or a bird or tree branch touched the charging part of the bushing terminal and a ground fault occurred. There is a risk of doing so. Therefore, as shown in Patent Document 1, a cover is attached to the bushing terminal so as to cover the charging part.

  FIG. 5 shows a conventional bushing terminal cover. In FIG. 5, reference numeral 1 denotes a bushing terminal having a rear end attached to a case 2 of an electric device, 3 denotes an insulation coated electric wire connected to the bushing terminal 1, 4 ′ Is a bushing terminal cover.

  The bushing terminal 1 has a plurality of umbrella portions 101a arranged in the axial direction on the outer periphery, and a tubular neck lower portion 101b provided at the rear end portion penetrates the case 2 of the electric device and is fixed to the case. , A central conductor 102 penetrating the axial center of the bushing 101, and a terminal conductor 103 connected to the tip of the central conductor 102. The terminal conductor 103 has a terminal portion 103 a to which the electric wire 3 is connected and a flange portion 103 b provided at the base portion of the terminal portion 103 a, and the flange portion 103 b is connected to the central conductor 102 at the distal end side of the bushing 101. Yes. A terminal fitting 5 is connected to one end of the core wire of the electric wire 3, and the terminal fitting 5 is connected to the terminal portion 103 a of the terminal conductor 103 by a bolt 6 and a nut 7. The other end of the core wire of the electric wire 3 is connected to a charging unit (not shown).

  The bushing terminal cover 4 ′ is a cylindrical shape formed so as to accommodate and cover the charging portion including the terminal conductor 103 of the bushing terminal and the connection portion between the electric wire 3 and the terminal conductor 103 together with a part of the electric wire 3. A diameter-reduced portion 4a 'having a diameter reduced so as to be fitted to the outer periphery of the flange portion 103b of the terminal conductor 103 is formed at one end in the axial direction, and is formed at the other end in the axial direction. Is formed with a wire covering portion 4 b ′ for covering the wire 3 drawn out from the terminal conductor 103 to the outside.

  This conventional bushing terminal cover 4 ′ is in a state in which the tip of the reduced diameter portion 4 a ′ provided at one end in the axial direction is in contact with the umbrella portion 101 a provided at the tip of the bushing 101 as shown in the figure. And positioned in the axial direction and attached to the bushing terminal 1. The bushing terminal cover 4 'is positioned in the axial direction of the bushing terminal by the reduced diameter portion 4a' being abutted against the umbrella portion 101a.

JP 2000-357438 A

  The conventional bushing terminal cover 4 ′ shown in FIG. 5 is attached to the bushing terminal 1 with the reduced diameter portion 4a ′ at one end thereof in contact with the umbrella portion 101a of the bushing. When a conductive film is formed on the outer surface of the bushing terminal cover 4 ′ and the outer surface of the bushing 101, the bushing terminal cover 4 ′ has a leakage current path that connects the outer surface of the wire 3 and the outer surface of the bushing 101. There is a possibility that it may be formed, which may reduce the insulation performance of the bushing terminal.

  For example, the case 2 shown in FIG. 5 is an automatic voltage regulator case, the bushing terminal 1 is connected to the automatic voltage regulator in the case, and the electric wire 3 drawn from the high-voltage distribution line is the bushing terminal 1. It is assumed that a bushing terminal cover 4 ′ shown in the figure is attached to the bushing terminal 1 in order to cover the charging portion of the bushing terminal 1 when connected to the terminal conductor 103. In this case, when a conductive film containing salt is formed on the outer surface of the insulation coating of the electric wire 3, the outer surface of the bushing terminal cover 4 ′, and the outer surface of the bushing 101 due to salt damage, the high voltage distribution line and the electric wire 3 are formed. A continuous leakage current path is formed from the connecting portion to the case 2 at the ground potential through the outer surface of the electric wire 3, the outer surface of the bushing terminal cover 4 ′, and the outer surface of the bushing 101. Will continue to flow. If such a state is left unattended, a ground fault may occur and a power failure may occur.

  In addition, the conventional bushing terminal cover does not have a means for draining water that has entered the inside thereof, so that water tends to accumulate in the terminal cover, which promotes the above phenomenon. There was a problem.

  An object of the present invention is to provide a bushing terminal cover that does not form a leakage current path between the outer surface of an electric wire and the outer surface of the bushing and does not cause a decrease in insulation performance of the bushing terminal.

  The present invention provides an insulating bushing having a plurality of umbrella parts arranged in the axial direction on the outer periphery and a rear end part attached to an electrical device, a central conductor passing through the axial center part of the bushing, and an electric wire connected The terminal conductor of the bushing terminal having a terminal portion to be connected to the center conductor on the distal end side of the bushing, and a flange portion provided at a base portion of the terminal portion. A bushing terminal cover that covers at least a part of an electric wire connected to a terminal portion of a terminal conductor as a covering portion is an object.

  The bushing terminal cover according to the present invention comprises first and second cover half parts made of insulating resin that are connected to each other by a hinge part so as to be openable and closable, and the first and second cover half parts are closed to face each other. In this case, a cylindrical cover is formed so as to accommodate and cover the covering portion inside. The first and second cover halves are provided with first and second coupling portions that are elastically coupled to each other and hold both cover halves closed.

  The cover formed when the first and second cover halves are closed is formed so as to cover the terminal portion of the terminal conductor and the portion near the terminal portion of the electric wire connected to the terminal portion. The cover main portion, the annular cover terminal portion arranged in a state surrounding the outer periphery of the flange portion of the terminal conductor, and the axial end surface on the terminal portion side of the flange portion of the terminal conductor are engaged to form a cylindrical shape. Positioning part for positioning the cover in the axial direction of the bushing, and fitting to the outer periphery of the insulation coating at a part further away from the terminal part than the part covered by the cover main part of the electric wire connected to the terminal part And an electric wire covering portion for covering.

  Further, the inner peripheral portion of the annular cover terminal portion is arranged in contact with the outer periphery of the flange portion of the terminal conductor, and between the convex portion that positions the cover terminal portion with respect to the flange portion and the outer periphery of the flange portion. The positioning portion is formed with a communication path that communicates the space inside the cover main portion with the gap formed between the cover terminal portion and the flange portion. Yes. Then, when the cover is covered with the cover and the cover is positioned in the axial direction by the positioning portion, the cover is continuous in the circumferential direction between the cover terminal portion and the umbrella portion of the bushing closest to the cover terminal portion. The axial length of the cover terminal part is set so that a gap is formed, and the cover terminal part is isolated from the bushing by the continuous gap formed between the cover terminal part and the umbrella part. (The cover terminal portion is configured not to contact the bushing).

  In the above bushing terminal cover, the first cover half part and the second cover half part are arranged on the side of the charging part of the bushing terminal to which the electric wire is connected, and the positioning part is applied to the end face of the flange part of the bushing terminal. By closing both cover halves in a bent state and elastically coupling the first and second coupling portions, the cover can be easily attached to the bushing terminal. The cover attached to the bushing terminal is positioned in the axial direction of the bushing by engaging the positioning portion with the end surface of the flange portion of the terminal conductor of the bushing terminal. Therefore, the cover is attached after the cover is attached to the bushing terminal. Even if an external force is applied to the cover, the cover terminal portion does not come into contact with the umbrella portion of the bushing.

  In the state where the bushing terminal cover is attached to the bushing terminal, a continuous gap is formed in the circumferential direction of the bushing between the cover terminal part and the umbrella part provided at the tip of the bushing, and the bushing terminal cover is separated from the bushing by this gap. Because it is isolated, when a conductive film is formed on the outer surface of the wire, the outer surface of the bushing terminal cover, and the outer surface of the bushing due to salt damage, etc., it passes through the outer surface of the wire, the outer surface of the cover, and the outer surface of the bushing. It is possible to prevent a continuous leakage current path from reaching the case of the electric device.

  Further, when configured as described above, the water that has entered the cover is discharged to the outside through the communication path provided in the positioning portion and the gap formed inside the cover terminal portion, so that the water accumulates in the cover. Can be prevented.

  In a preferred aspect of the present invention, the wire covering portion is composed of a plurality of sections having different inner diameters so as to be adapted to electric wires having different outer diameters, and the plurality of sections are arranged in descending order of inner diameter from the cover main portion side. It has the structure connected in the state of being arranged, and can cut | disconnect an electric wire coating | coated part in the boundary part between the adjacent sections of an electric wire coating | coated part.

  If the electric wire covering portion is configured as described above, it is possible to cope with the case where electric wires having various outer diameters are connected to the bushing terminal.

  According to the present invention, with the bushing terminal cover attached to the bushing terminal, a continuous gap in the circumferential direction of the bushing is formed between the cover terminal portion and the umbrella portion provided at the tip of the bushing. Therefore, when a conductive film is formed on the outer surface of the insulation coating of the wire, the outer surface of the bushing terminal cover, and the outer surface of the bushing due to salt damage, the outer surface of the bushing terminal cover and the outer surface of the bushing are passed from the outer surface of the wire. By preventing the formation of a continuous leakage current path leading to the electrical equipment case, it is possible to prevent leakage current from flowing through the electrical equipment case, and this state will continue to develop into a ground fault. Can be prevented.

  Further, the bushing terminal cover according to the present invention attached to the bushing terminal is positioned in the axial direction by the positioning portion engaging with the flange of the terminal conductor of the bushing terminal, so that the cover attached to the bushing terminal is external force. Therefore, it is possible to prevent the cover terminal portion from coming into contact with the umbrella portion of the bushing by moving in the axial direction. Therefore, it is possible to maintain a state in which a gap is formed between the cover terminal portion and the umbrella portion of the bushing, and to maintain a state in which an effect of preventing the formation of a leakage current path can be obtained, thereby improving reliability. it can.

  Further, according to the present invention, the water that has entered the inside of the cover main part can be discharged to the outside through the communication path provided in the positioning part and the gap formed inside the cover terminal part. It is possible to prevent water from being accumulated in the cover, and it is possible to prevent the insulation performance of the bushing terminal from being deteriorated by promoting the formation of the leakage current passage by the water accumulated in the cover.

It is sectional drawing which showed the state which attached the bushing terminal cover concerning one Embodiment of this invention to the bushing terminal. (A) is a front view of the bushing terminal cover concerning one Embodiment of this invention, (B) is a right view of the same bushing terminal cover. (A) is a top view of the bushing terminal cover concerning one Embodiment of this invention, (B) is a bottom view of the bushing terminal cover. It is a principal part expanded sectional view which showed the structure of the 1st and 2nd coupling | bond part used with the bushing terminal cover concerning one Embodiment of this invention. It is sectional drawing which showed the state which attached the conventional bushing terminal cover to the bushing terminal.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In this embodiment, it is assumed that the electric device to which the bushing terminal is attached is an automatic voltage regulator. FIG. 1 is a sectional view showing a state in which a bushing terminal cover according to this embodiment is attached to a bushing terminal. In FIG. 1, reference numeral 1 denotes a bushing in which a rear end portion is attached to a case 2 of an electric device (automatic voltage regulator). Terminals 3, 3 are insulation-coated wires connected to the bushing terminal 1, and 4 is a bushing terminal cover according to the present invention.

  Like the one shown in FIG. 5, the bushing terminal 1 has a plurality of umbrella portions 101 a arranged in the axial direction on the outer periphery, and a tubular neck lower portion 101 b provided at the rear end portion is a case 2 of an electric device. And an insulating bushing 101 fixed to the case, a center conductor 102 passing through the axial center of the bushing 101, and a terminal conductor 103 connected to the tip of the center conductor 102. Yes. The detailed illustration of the attachment portion for attaching the bushing terminal to the case 2 of the electric device is omitted.

  The terminal conductor 103 has a plate-like terminal portion 103 a to which the electric wire 3 is connected and a disk-like flange portion 103 b provided at the base of the terminal portion 103 a, and the flange portion 103 b is on the tip side of the bushing 101. To the central conductor 102. The outer diameter of the flange portion 103b of the terminal conductor 103 is set to be larger than the outer diameter of the tip portion of the bushing 101 (the portion further on the tip side than the umbrella portion 101a located closest to the tip of the bushing) 101c. Connected to the central conductor 102 of the bushing terminal 1 is a lead wire drawn from an automatic voltage regulator accommodated in the case 2.

  The terminal conductor 103 of the bushing terminal is connected to a high-voltage distribution line (not shown) through the insulation-coated electric wire 3. In the illustrated example, the crimp terminal portion 5a provided on the terminal fitting 5 is connected to one end of the core wire of the electric wire 3, and the terminal plate 5b provided on the terminal fitting 5 is overlapped with the terminal portion 103a of the terminal conductor 103, The terminal portion 103a is connected by a bolt 6 and a nut 7.

  The bushing terminal cover 4 according to the present invention covers the terminal conductor 103 of the bushing terminal 1 and at least a part of the electric wire 3 connected to the terminal portion 103a of the terminal conductor as the required covering portion 10. As shown in FIG. 2, the bushing terminal cover 4 according to the present embodiment includes a first cover half 401 made of insulating resin and a second cover half 402 that are connected to each other by a hinge 400 so as to be opened and closed. And when the first and second cover halves 401 and 402 are closed and faced together, a cylindrical cover 403 is formed so as to house and cover the covering portion 10 inside. Yes.

  The first and second cover halves 401 and 402 constituting the bushing terminal cover 4 have a shape in which a cylindrical body having a size capable of accommodating the required covering portion 10 is divided into two on both sides of a plane including the central axis. ing. When the first and second cover halves 401 and 402 are abutted with each other, plate-like overhangs 401a and 402a are formed, and when the first and second cover halves 401 and 402 are closed The overhang portions 401a and 402a overlap each other.

  The first and second cover halves are respectively provided with a first coupling portion 401b and a second coupling portion 402b that are elastically coupled to each other and hold both cover halves closed. Yes. The first and second coupling portions are coupling portions that are coupled in a snap-type manner. In this embodiment, as shown in FIG. 4, the first coupling portion 401b is formed integrally with the overhang portion 401a. The second coupling portion 402b is a hole formed in the overhang portion 402a. The protrusion constituting the first coupling portion 401b has an enlarged head 401b1 at the tip, and the enlarged head 401b1 is elastically fitted into the corresponding hole constituting the second coupling portion 402b. The first coupling portion 401b and the second coupling portion 402b are coupled.

  A cover 403 formed when the first and second cover halves 401 and 402 are closed includes a terminal portion 103a of the terminal conductor 103 and a portion near the terminal portion 103a of the electric wire 3 connected to the terminal portion. A cover main portion 403a formed so as to be covered, and a cover main portion 403a that is continuously provided at the end of the bushing terminal portion 1 side of the cover main portion 403a and surrounds the outer periphery of the flange portion 103b of the terminal conductor 103 An annular cover terminal portion 403b to be arranged, a positioning portion 403c for engaging the axial end surface 103b1 on the terminal portion 103a side of the flange portion 103b of the terminal conductor 103 to position the cover 403 in the axial direction of the bushing 101, and a cover The cover of the electric wire 3 formed continuously from the end portion of the main portion 403a opposite to the bushing terminal 103 and connected to the terminal portion 103 Integrally has a wire covering portion 403d that covers the electric wire 3 is fitted to the outer periphery of the insulating coating of the portion remote from the further terminal portion 103a than the portion covered by the part 403a.

  That is, when the first and second cover halves 401 and 402 are closed, the cover main part 403a, the cover terminal part 403b, the positioning part 403c, and the wire covering part 403d are connected. Each shape is determined so that the cylindrical cover 403 which has it is formed.

  As shown in FIG. 3B, the annular cover terminal portion 403 b is formed to have a corrugated shape, and is in contact with the outer periphery of the flange portion 103 b of the terminal conductor 103. The protrusions 403b1 arranged in this state and the recesses 403b2 that form a gap between the outer periphery of the flange portion 103b are alternately arranged. The cover terminal portion 403b is positioned in the radial direction of the flange portion 103b when the convex portion 403b1 on the inner periphery contacts the outer periphery of the flange portion 103b. In the present embodiment, since the cover terminal portion 403b is formed in a waveform, the outer periphery of the cover terminal portion 403b is formed in a state where convex portions and concave portions are alternately arranged in the circumferential direction.

  The positioning portion 403c is a plate-like portion provided in a state of projecting inward in the radial direction from the inner peripheral portion of the end portion of the cover terminal portion 403b opposite to the bushing 101, and the positioning portion 403c of the cover main portion 403a. A part of the plate-like portion constituting the positioning portion 403c is cut out so that the communication path 11 that connects the inner space to the gap g formed between the cover terminal portion 403b and the flange portion 103b is formed. ing.

  In this embodiment, when the cover 4 is covered with the cover 4 and the cover is positioned in the axial direction by the positioning portion 403c, the end surface on the bushing 101 side of the cover terminal portion 403b is the flange portion 103b of the terminal conductor. The bushing is disposed between the cover terminal portion 403b and the umbrella portion 101a of the bushing closest to the cover terminal portion so as to be disposed at a position close to the bushing side beyond the position of the end surface on the bushing side The axial length of the cover terminal portion 403b is set so that a gap G continuous in the circumferential direction 101 is formed. Further, the bushing terminal portion 403b is formed so as not to have a portion that protrudes further to the inner diameter side than the convex portion 403b1, and the bushing terminal cover 4 is attached to the bushing terminal 1 in the state where the bushing terminal portion 403b is attached. A continuous gap in the circumferential direction of the bushing 101 is also formed between the circumference and the outer periphery of the tip portion 101 c of the bushing 101. That is, when the bushing terminal cover 4 is attached to the bushing terminal 1 and is positioned in the axial direction of the bushing terminal by the positioning portion 403c, the cover terminal portion 403b is isolated from the bushing 101 by the gap G. It is formed so that it does not have any part which contacts bushing 101.

  The wire covering portion 403d is fitted to the outer periphery of the insulation covering at a portion further away from the terminal portion 103a than the portion covered by the cover main portion 403a of the electric wire 3 connected to the terminal portion 103 of the bushing terminal. An electric wire covering portion that covers the electric wires is integrally provided. The illustrated wire covering portion 403d is composed of a plurality (six in the illustrated example) of sections 403d1 to 403d6 having different inner diameters so as to be adapted to the wires 3 having different outer diameters. It has a structure in which the main parts 403a are connected in a state in which the inner diameters are arranged in descending order. The wire covering portion 403d is formed so as to be cut at a boundary portion between adjacent sections.

  In attaching the bushing terminal cover 4 to the bushing terminal 1, first, the section 3 fits the thickness of the electric wire 3 connected to the terminal fitting 103 among the sections 403d1 to 403d6 constituting the electric wire covering portion 403d (electric wire). The unnecessary section is cut off so that the section having the inner diameter (which fits in close contact with the outer periphery of 3) is positioned at the forefront of the bushing terminal cover 4. Next, the first cover half 401 and the second cover half 402 are arranged on the side of the charging part of the bushing terminal 1 to which the electric wire 3 is connected, and the positioning part 403c is the end face of the bushing terminal flange 103b. The bushing terminal cover 4 is attached to the bushing terminal 1 by closing both the cover halves 401 and 402 and elastically coupling the first and second coupling portions 402b and 402b. The cover 4 attached to the bushing terminal is positioned in the axial direction of the bushing 1 by the positioning portion 403c engaging with the end surface 103b1 of the flange portion 103b of the terminal conductor of the bushing terminal 1. Even if an external force is applied to the cover after 4 is attached, the cover terminal portion 403b does not come into contact with the bushing umbrella portion 101a.

  In the state where the outer diameter of the flange portion 103b of the terminal conductor of the bushing terminal is set larger than the outer diameter of the tip portion 101c of the bushing 101 and the bushing terminal cover 4 is attached to the bushing terminal 1 as in this embodiment. When a gap G continuous in the circumferential direction of the bushing is formed between the cover terminal portion 403b fitted to the outer periphery of the flange portion 103b and the umbrella portion 101a provided at the tip of the bushing 101, Since the gap G separates the cover 4 from the bushing 101, when a conductive film is formed on the outer surface of the electric wire 3, the outer surface of the bushing terminal cover 4, and the outer surface of the bushing 101 due to salt damage or the like. In addition, a continuous leakage current path is formed through the outer surface of the electric wire 3, the outer surface of the cover 4, and the outer surface of the bushing 101 to reach the case of the electric device. There is no be. Therefore, it is possible to prevent a leakage current from flowing through the case of the electric device, and to eliminate the possibility that the leakage current will continue to develop into a ground fault.

  Further, as in the present embodiment, a gap g is formed between the cover terminal portion and the flange portion of the terminal fitting of the bushing terminal, a notch is formed in the positioning portion 403c, and the gap g By providing the communication passage 11 for communicating the water, the water that has entered the cover 4 can be discharged to the outside through the communication passage 11 and the gap g, thus preventing water from accumulating in the bushing terminal cover 4. Can do.

  Further, as in the present embodiment, the electric wire covering portion 403d is constituted by a plurality of sections having different inner diameters so as to be adapted to electric wires having different outer diameters, and an unnecessary inner diameter that is smaller than the outer diameter of the electric wires is unnecessary. By separating the sections, it is possible to cope with the case where the electric wires 3 having various outer diameters are connected to the bushing terminals 1.

  In the above embodiment, the entire cover terminal portion 403b has a corrugated shape so that the convex portion 403b1 and the concave portion 403b2 are formed on the inner periphery of the cover terminal portion 403b. However, the outer peripheral surface of the cover terminal portion 403b may be a smooth cylindrical surface, and only the inner peripheral portion may have a shape in which the convex portions 403b1 and the concave portions 403b2 are alternately arranged.

  In the above-described embodiment, the first and second cover halves 401 and 402 are not provided with a coupling portion that couples the cover halves at the abutting portion of the portion that forms the wire covering portion 403d. Also, a coupling portion may be provided at the butted portion of the portion of the second cover half 401 and 402 that forms the wire covering portion 403d.

  In the case where the bushing terminal cover 4 is formed of a hard insulating resin, there is no particular problem even if the connecting portion is not provided in the portion where the wire covering portion 403d is formed as in the above embodiment, but the cover 4 is soft. When the first and second cover half portions 403 are closed, the wire covering portion may be opened. Thus, when there exists a possibility that the electric wire coating | coated part 403d may open, after attaching the cover 4 to the bushing terminal 1, the part which forms the electric wire coating | coated part 403d of the 1st and 2nd cover half parts 401 and 402 It is only necessary to prevent the wire covering portion 403d from opening by applying an adhesive to the butting portion and bonding the abutting portion, or by applying taping to the outer periphery of the wire covering portion 403d.

  In the above embodiment, the wire covering portion 403d is configured by a number of sections having different inner diameters. However, when the outer diameter of the electric wire 3 connected to the terminal conductor 103 of the target bushing terminal 1 is constant, The covering portion 403d can be constituted by a single section having an inner diameter that matches the outer diameter of the electric wire.

  In the above description, the bushing terminal cover attached to the bushing terminal attached to the case of the automatic voltage regulator is taken as an example, but the present invention is also applied to the bushing terminal cover attached to the bushing terminal attached to the case of other electrical equipment. Of course it can be applied.

DESCRIPTION OF SYMBOLS 1 Bushing terminal 101 Bushing 101a Umbrella part 102 Central conductor 103 Terminal conductor 2 Electrical equipment case 3 Electric wire 4 Bushing terminal cover 400 Hinge part 401 1st cover half part 402 2nd cover half part 403 Cylindrical cover 403a Cover main Part 403b cover terminal part 403c positioning part 403d wire covering part

Claims (2)

An insulating bushing having a plurality of umbrella parts arranged in the axial direction on the outer periphery and a rear end part attached to an electric device, a central conductor passing through the axial center part of the bushing, and a terminal to which an electric wire is connected The terminal conductor of the bushing terminal and the terminal having a terminal portion and a flange portion provided at a base portion of the terminal portion, the flange portion being connected to the center conductor on a distal end side of the bushing A bushing terminal cover that covers at least a part of the electric wire connected to the terminal portion of the conductor as a covering portion,
It comprises first and second cover half parts made of insulating resin that are openably and closably connected by a hinge part, and when the first and second cover half parts are closed and abutted, the required covering part is placed inside A cylindrical cover is formed to be housed and covered,
The first and second cover halves are provided with first and second coupling portions that are elastically coupled to each other and hold both cover halves closed,
The cover formed when the first and second cover halves are closed can cover the terminal portion of the terminal conductor and the portion of the electric wire connected to the terminal portion near the terminal portion. The cover main part formed in this way, the annular cover terminal part arranged in a state surrounding the outer periphery of the flange part of the terminal conductor, and the axial end face on the terminal part side of the flange part of the terminal conductor Insulating a portion further away from the terminal portion than a portion covered by the cover main portion of the electric wire connected to the terminal portion and a positioning portion for positioning the cylindrical cover in the axial direction of the bushing It has an electric wire covering part that fits around the outer periphery of the covering and covers the electric wire,
An inner peripheral portion of the annular cover terminal portion is disposed in contact with an outer periphery of the flange portion of the terminal conductor, and a convex portion that positions the cover terminal portion with respect to the flange portion, and an outer periphery of the flange portion Formed into a shape having a recess that forms a gap between
In the positioning part, a communication path is formed that communicates the space inside the cover main part with a gap formed between the cover terminal part and the flange part,
The covering portion is covered with the cover, and when the cover is positioned in the axial direction by the positioning portion, the periphery of the bushing is between the cover terminal portion and the umbrella portion of the bushing closest to the cover terminal portion. The axial length of the cover terminal portion is set so that a continuous gap is formed in the direction, and the cover terminal portion is isolated from the bushing by the continuous gap. A featured bushing terminal cover. The wire covering portion is composed of a plurality of sections having different inner diameters so as to be adapted to electric wires having different outer diameters, and the plurality of sections are connected in a state in which the inner diameters are arranged in descending order from the cover main portion side. Having a structured
A bushing terminal cover, wherein the wire covering portion is formed so that the wire covering portion can be cut at a boundary portion between adjacent sections of the wire covering portion.

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