JP2017208951A - Cable traction structure and cable terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cable traction structure that reduce a workload in a connection place and a cable terminal.SOLUTION: A cable traction structure comprises: a cable tip part (2) with at least one sleeve which has a conductive part (6) constructed by a conductor obtained by stripping an insulation coating (5) of a cable (C) and a sleeve (7) that is compressed and connected to a peripheral surface of the conductive part (6); and a pulling eye (4) having a protection cover (41) housing the cable tip part (2) with the sleeve, a fixing member (42) that positions and fixes the cable tip part (2) with the sleeve, and an eye metal tool (46). The sleeve (7) includes a screw part (72) screwed to an outer peripheral surface. The conductive part (6) is an electric connection part (61) in which a part of the tip side from the screw part (72) is exposed to the tip side from the sleeve (7) and is connected to a connection mating.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cable pulling structure and a cable terminal in which a pooling eye is attached to, for example, at least one cable tip.

Conventionally, a pooling eye for drawing an electric cable into a laying pipeline and extending it to a predetermined place is known.
For example, in Patent Document 1, a cable conductor is gripped by a sleeve having a threaded bolt protruding from the tip of a conductor gripping socket, and the same number of insertion holes are drilled on the same circumference and at the center. Inserting the wire rope into the insertion hole of the support plate projecting the eye part, forming a waterproof tape layer from the cable cover to the sleeve, and covering the outer periphery with a metal protective cover A cable pooling eye is described which is fixed to the support plate.

Japanese Utility Model Publication No.59-133502

The pooling eye makes it easy to pull the cable into a laying pipeline or the like, and pulls the cable to a place where a target device to be connected is installed. However, the sleeve of the pooling eye that grips the cable conductor is connected to the cable conductor by compression, and the cable is pulled to attach the terminal for connection (wiring) to the connection partner (for example, switchboard) to the cable conductor. After that, the sleeve that has been compression-connected to the cable must be removed from the cable, and this sleeve can be removed when the cable is located closer to the cable body than the end of the cable where the metal protective cover of the pooling eye is fitted. This was done by cutting the coated part. After cutting the cable, it was necessary to peel off the cable coating again to expose a new conductor, attach a terminal to the exposed conductor, and perform terminal processing such as insulation and waterproofing. .
Even if only the sleeve can be removed, the shape of the conductor part is significantly deformed due to the compression connection of the sleeve, which is unsuitable for mounting the terminal, and in order to mount the terminal, the deformed conductor part is cut. In addition, it was necessary to newly expose the conductor.

  With the increase in the number of buildings such as condominiums and buildings, the capacity of trunk lines (cables) has increased and the number of systems has increased, and in recent years it has been desired to save space in the distribution room. It is assumed that it is difficult to secure space. Processing such as stripping the cable sheath to expose the conductor in a narrow work space forces the operator to work in an unreasonable posture, lowering work efficiency and making work difficult in some cases. There was also. For this reason, it is desirable to improve the structure of the cable front end portion to which the pooling eye is attached so that the connection work with the connection partner can be performed efficiently.

  Then, this invention is made | formed in view of the said subject, and it aims at providing the cable traction structure and cable terminal which can improve connection workability | operativity with a connection other party significantly.

  In order to achieve the above object, the gist of the present invention is as follows.

(1) A conductor portion constituted by a conductor stripped of an insulation coating of a cable, or a conductor portion constituted by an interconnection state between the conductor and a conductor extension member disposed close to the extension of the conductor; and An at least one cable tip with a sleeve having a sleeve compression-connected to the peripheral surface of the conductor in a state where the conductor is inserted, and an internal space for accommodating the at least one cable tip with a sleeve A protective cover having a protective cover, a fixing member that is separably connected to the protective cover, and that positions and fixes the end portion of each sleeve-attached cable within the protective cover, and an eye bracket that is connected and fixed to the outer surface of the protective cover The conductor portion or the sleeve has a threaded portion threaded on an outer peripheral surface, and the conductor portion has a portion on the tip side of the threaded portion, Cable terminal pulling structure, characterized in that exposed from leave the free end portion, constituting the electrical connection portion to be connected to a connection partner.

(2) The conductor portion is made of a conductor stripped from the insulation coating of the cable, the screwing portion is formed on the sleeve, and the electrical connection portion is exposed from the sleeve of the conductor to the distal end side. The cable pulling structure according to (1) above, wherein the cable pulling structure is a portion that has

(3) The conductor portion is configured in an interconnected state between the conductor and the conductor extension member via the sleeve, the screwing portion is formed in the sleeve, and the electrical connection portion is The cable pulling structure according to (1), wherein the conductor extending member is a portion exposed to the distal end side from the sleeve.

(4) The conductor portion is configured in an interconnected state between the conductor and the conductor extension member via the sleeve, and the screwing portion is formed on the conductor extension member, and the screwing portion. The cable pulling structure according to (1), wherein the electrical connection portion is provided on a portion of the conductor extension member exposed from the sleeve to the distal end side.

(5) The cable pulling structure according to (3) or (4), wherein the conductor extending member is a stranded wire formed by twisting a plurality of copper wires.

(6) The cable pulling structure according to (4), wherein the conductor extending member is made of a copper bar.

(7) The cable pulling mechanism according to (2), wherein the sleeve is made of aluminum.

(8) The portion of the sleeve that accommodates the conductor is made of aluminum, and the portion of the sleeve that accommodates the conductor extension member is made of copper. The cable pulling structure according to any one of the above.

(9) The bottomed cylinder in which the fixing member has an insertion hole having an inner diameter through which the screwing portion and the electric connection portion can be inserted, and covers the screwing portion and the electric connection portion protruding from the insertion hole. The cable pulling structure according to any one of (1) to (8), wherein a protective cap is provided.

(10) The protective cap has, on an inner peripheral surface on the opening side, a threaded portion that is threadedly engaged with the threaded portion to position and fix each of the sleeve-attached cable tip portions to the fixing member. The cable terminal traction structure according to (9) above.

(11) The protective cap has an annular flange portion that protrudes radially outward on the opening portion side and contacts the opposing surface of the fixing member by screw connection with the screwing portion. A sealing member is provided between the flange and the fixing member, and an annular second sealing member is provided between the inner peripheral surface of the insertion hole and the outer peripheral surface of the sleeve. The cable terminal traction structure according to the above (10), characterized by:

(12) The fixing member has an insertion hole having an inner diameter through which the conductor extension member can be inserted, and an annular third sealing member is formed between the outer peripheral surface of the conductor extension member and the insertion hole. From the above (3) to (8), characterized in that an annular fourth sealing member provided between the peripheral surface and the annular surface is provided on an abutting surface of the fixing member against which the sleeve abuts. The cable terminal pull structure according to any one of the above.

(13) The fixing member has an insertion hole having an inner diameter through which the screwing portion and the electrical connection portion constituting the conductor extension member can be inserted, and the annular fifth sealing member is Any one of (3) to (8) above, wherein the fixing member is provided in an abutting surface against which the sleeve is abutted and in close contact with the outer peripheral surface of the conductor extension member. Cable terminal traction structure as described in 1.

(14) The distal end portion of the cable with the sleeve includes an insulating member that covers at least a portion straddling the base end portion of the sleeve and the insulating coating while the electrical connection portion and the screwing portion are exposed. The cable terminal traction structure according to any one of (1) to (13) above, wherein

(15) A conductor portion composed of a conductor stripped from the insulation coating of a cable, or composed of an interconnected state between the conductor and a conductor extension member disposed close to the extension of the conductor, the conductor A sleeve that is compression-connected to the peripheral surface of the conductor portion in a state in which the portion is inserted, and an insulating member that covers at least a portion straddling the base end portion of the sleeve and the insulating coating. Part or the sleeve has a threaded part threaded on the outer peripheral surface, and the conductor part has a tip side more than the threaded part exposed from the sleeve to the tip side, so that the connection partner At least one cable tip with a sleeve constituting an electrical connection portion to be connected, a terminal attached to the electrical connection portion, a base portion of the terminal, and a portion straddling the distal end portion of the insulating member At least insulating and waterproofing covering Cable terminal, characterized in that it comprises a covering member.

  According to the cable pulling structure according to the present invention, a conductor portion which is composed of a conductor stripped from an insulation coating of a cable, or has a conductor extension member disposed close to the conductor extension, And at least one cable tip with a sleeve having a sleeve compression-connected to the peripheral surface of the conductor in a state where the conductor is inserted, and the at least one cable tip with a sleeve is accommodated A protective cover having an internal space, a fixing member that is detachably connected to the protective cover, and that positions and fixes the tip of each sleeve-attached cable within the protective cover, and an eye bracket that is connected and fixed to the outer surface of the protective cover And the conductor portion or the sleeve is connected to the fixing member of the tip portion of the cable with each sleeve on the outer peripheral surface. The conductive portion is an electrical connection portion that is exposed to the distal end side from the sleeve and connected to the connection partner, with respect to the conductor portion. The electrical connection portion connected to the connection partner is not the compression connection portion of the sleeve for attaching to the pooling eye, and at least one cable is connected to the predetermined connection state while being exposed from the sleeve. As a result, the terminal used for connection with the connection partner can be immediately attached to the electrical connection part simply by removing the pooling eye from the tip of the cable with the sleeve. Therefore, workability at the connection place can be greatly improved.

FIG. 1 is a partial cross-sectional view showing a part of a protective cover constituting a pooling eye in order to explain an internal state of a cable pulling structure of a typical embodiment according to the present invention. FIG. 2 is a partial cross-sectional view showing only one of the cable tip portions with sleeves constituting the cable pulling structure shown in FIG. FIG. 3 is an exploded perspective view of components of the cable pulling structure. FIG. 4 is a perspective view showing a screw connection state between the distal end portion of the cable with sleeve and the fixing member. FIG. 5 is a diagram illustrating a protective cap that protects the distal end portion of the cable with a sleeve. FIG. 6 is a diagram for explaining another protective cap for protecting the tip portion of the cable with sleeve. FIG. 7 is a view for explaining still another protective cap for protecting the cable end portion with the sleeve and a sealing member in the cable terminal. 8 (a) and 8 (b) are diagrams showing the cable terminal, FIG. 8 (a) is a perspective view of the cable terminal, and FIG. 8 (b) is a plane including the axis of FIG. 8 (a). It is the fragmentary sectional view made into the cross section. FIGS. 9A and 9B show another embodiment (Modification 1) of the conductor portion with the sleeve, FIG. 9A is a perspective view, and FIG. It is the fragmentary sectional view made into the section in the plane containing an axis. 10 (a) and 10 (b) show another embodiment (Modification 2) of the distal end portion of the cable with sleeve, FIG. 10 (a) is a perspective view, and FIG. 10 (b) FIG. 11 is a partial cross-sectional view taken along a plane including the axis of FIG. FIG. 11 is a diagram illustrating a sealing member. FIG. 12 is a diagram illustrating a sealing member.

  Next, a cable pulling structure according to the present invention will be described below with reference to the drawings. It should be noted that some of the embodiments described below are exemplifications and can take various forms within the scope of the present invention.

  FIG. 1 is a partially cutaway view of a part of a protective cover constituting a pooling eye, for explaining the internal state of a cable pulling structure of an exemplary embodiment according to the present invention. FIG. 3 is an exploded perspective view of the cable pulling structure, and FIG. 4 is an exploded perspective view of only one of the cable tip portions with sleeves constituting the cable pulling structure shown in FIG. FIG. 5 illustrates a protective cap that protects the sleeved cable tip, and FIG. 6 illustrates another protective cap that protects the sleeved cable tip. FIG. 7 illustrates still another protective cap that protects the cable end portion with the sleeve, and a sealing member in the cable terminal. FIGS. 8A and 8B show the cable terminal. (A) is a cable terminal perspectively shows, FIG. 8 (b) shows in the partial cross-section sleeved cable head in a plane containing the axis of FIG. 8 (a).

<Cable pulling structure>
As shown in FIG. 1, the cable pulling structure 1 is a structure including at least one cable tip portion 2 with a sleeve and a pooling eye 4 that houses and pulls the cable tip portion 2 with a sleeve. For example, in the illustrated embodiment, a sleeve-attached cable tip portion group (hereinafter also referred to as “cable tip portion group”) composed of three sleeve-attached cable tip portions 2 is provided.
For convenience of explanation, the extending direction (longitudinal direction) of the cable C or the cable tip portion 2 with the sleeve is “X”, the distal end direction (cable extending direction) is “X1”, and the proximal end direction is “X2”. It is defined as

[Cable end with sleeve]
The cable end portion 2 with a sleeve shown in FIG. 2 includes a conductor portion 6, a sleeve 7 that is compression-connected (connected) to the outer peripheral surface of the conductor portion 6 in a state where the conductor portion 6 is fitted, and an insulating member 8. Have. The insulating member 8 covers at least the proximal end portion of the sleeve 7 and the portion of the cable C straddling the insulating coating 5 of the cable C.

(Cable insulation)
The cable C includes a conductor of the cable C, an insulating coating (cable insulator) 5 that covers the outer periphery of the conductor, and a protective layer (cable sheath) that protects the conductor and the insulating coating 5. In the drawings, the insulating coating 5 and the protective layer are drawn together. The material of the insulating coating 5 may be any material that can be insulated from the outside, and the type of material is not limited. For example, an insulating resin containing polyvinyl chloride (PVC) or cross-linked polyethylene can be used.

(Conductor part)
The conductor portion 6 shown in FIG. 2 is a tip portion of the cable C, and is composed of a conductor exposed by peeling off the insulation coating. The conductor portion 6 has an electrical connection portion 61 connected to a connection partner at a portion exposed from the sleeve 7 on the distal end side X1 in the extending direction X of the cable C.
That is, the “electrical connection portion 61” in the embodiment shown in FIG. 2 is a conductor portion that is exposed in the distal end side direction X1 from the sleeve 7 in a state where the conductor portion 6 made of the stripped conductor is fitted into the sleeve 7. 6 portion (tip portion). A terminal T that is actually connected to the connection partner is attached to the electrical connection portion 61 (see FIG. 8).
The conductor part 6 is comprised with metal materials, such as aluminum, aluminum alloy, copper, or a copper alloy. The form of the conductor part 6 has shown the case where it comprises with the strand wire formed by twisting several strands in FIG.

(sleeve)
The sleeve 7 shown in FIG. 2 is a metal cylindrical stepped sleeve that is compressed and connected to the peripheral surface of the conductor portion 6 and has a through hole 71 extending from one end to the other end. In order to position and fix the cable-end portion 2 with the sleeve to the fixing member 42, the sleeve 7 has a threaded portion 72 threaded on the outer peripheral surface of the end-side portion. The sleeve 7 is connected (coupled) to the outer peripheral surface of the conductor portion 6 by compressing the portion where the threaded portion 72 does not exist from the outer peripheral side in a state where the conductor portion 6 is inserted into the through hole 71.
For example, a seal tape (not shown) or the like may be wound around a portion of the screwing portion 72 that is screwed with a nut 44 described later.

The material of the sleeve 7 is not limited as long as it is conductive, but it is preferably formed from a metal material such as aluminum, aluminum alloy, copper or copper alloy. In addition, it is preferable that the material of the sleeve 7 has a thermal expansion coefficient equal to or greater than that of the material of the conductor portion 6, but considering the dissimilar metal corrosion, the sleeve 7 and the conductor portion 6 are made of the same metal material. It is particularly preferable that it is configured.
When the conductor portion 6 and the sleeve 7 are made of different metal materials, for example, the conductor portion 6 is made of a stranded wire formed by twisting a plurality of copper (element) wires, and the sleeve 7 is made of an aluminum material. In this case, since the thermal expansion coefficient of aluminum is larger than that of copper, a good pressure-bonding state of the conductor portion 6 by the sleeve 7 is maintained even in a use environment where heating and cooling are performed. be able to.

  In the cable pulling structure of the present invention, when pulling the cable with the pooling eye, the sleeve for attaching the electrical connection portion 61 exposed from the sleeve 7 in the distal end direction X1 of the cable C to the pooling eye 4 (particularly the fixing member 42). 7 can be kept in a connectable state without being crimped, so after cutting the cable tip at the connection site with the connection partner, peel off the insulation coating and add a new conductor. Since it is possible to omit an operation such as exposing and forming an electrical connection portion, the mounting workability of the terminal T is remarkably improved.

(Insulating material)
In FIG. 2, the insulating member 8 shows a case where the insulating member 8 is covered over a range extending over the base end side portion of the sleeve 7 and the insulating covering 5 on the distal end side of the cable C in the extending direction X of the cable C. . The insulating member 8 may be formed integrally with the cable C by molding, or an insulating member formed in a tubular shape as a separate body may be attached to the outer periphery of the cable C. The material of the insulating member 8 is not particularly limited as long as it is a material that can exhibit good insulating properties and waterproofness, and examples thereof include rubber materials such as silicone rubber and EP rubber, and synthetic resin materials such as plastic.

For example, the insulating member 8 formed in advance as a part of the cable tip portion 2 with a sleeve by molding or the like in a factory or the like is compared with an insulating member formed manually in a limited work space at a connection place with a connection partner. Insulation and waterproof properties are excellent.
The insulating member 8 may be a shrinkable tube, and may be formed by resin injection, tape winding, or the like.

[Pooling Eye]
The pooling eye 4 is a cable pulling jig used when pulling and extending one or a plurality of electric cables C to a position where a connection partner is installed. For example, in the embodiment shown in FIG. 1, the pooling eye 4 shows a case where the three wire cables C can be pulled. They are connected as a group. A protective cover 41, a fixing member 42, and an eye metal fitting 46 are provided.

(Protective cover)
The protective cover 41 has an internal space for accommodating the cable tip end group in a state where the electrical connection portion 61 constituting the cable tip end portion 2 with each sleeve is in a connectable state or a terminal mountable state. It is formed in a bottom cylinder shape. The protective cover 41 is disposed in the internal space so as to cover the periphery of the cable distal end group by inserting the cable distal end portion from the distal end of the electrical connection portion 61 to at least the proximal end position of the insulating member 8. Although the material of the protective cover 41 is not specifically limited, For example, a metal is preferable.
The protective cover 41 shown in FIG. 3 has an insertion hole 41b at a position where a fixing member 42 described later is connected, and a connector 41a such as a screw for connecting the fixing member 42 is inserted into the insertion hole 41b. The The number of the insertion holes 41b can be freely set, but preferably there are a plurality. For example, in FIG. 3, three insertion holes 41b are provided on the peripheral surface of the protective cover 41 at equal intervals (120 °). The fixing member 42 is connected to the protective cover 41 with a book connector 41a.

(Fixing member)
The fixing member 42 is connected to the protective cover 41 so as to be separable, and positions and fixes the cable tip portions 2 with the sleeves in the protective cover 41. The fixing members 42 pull the cable tip portions 2 with the sleeves against the pooling eyes 4. Prevent omissions. The fixing member 42 has a circular shape in plan view, and the material thereof is not particularly limited. For example, a metal is preferable.
The fixing member 42 shown in FIGS. 3 and 4 accommodates each sleeve-attached cable tip 2 and positions the fixing plate 43 within the protective cover 41 and positions and fixes each sleeve-attached cable tip 2 to the fixing plate 43. Therefore, it has a nut 44 that is screwed into a screwing portion 72 formed on the sleeve 7 and screwed.

The fixing plate 43 shown in FIG. 3 is a disk-shaped member, and has three insertion holes 43a that penetrate the fixing plate 43 in the thickness direction and are formed at equal intervals (120 °) around the central axis. Each insertion hole 43a shown in FIG. 4 has an inner diameter through which the threaded portion 72 of the sleeve 7 and the electrical connection portion 61 of the conductor portion 6 can be inserted. When each cable end with sleeve 2 is inserted into the insertion hole 43a of the fixing plate 43 to the insertion completion position, the screwing portion 72 protrudes at least partially from the insertion hole 43a of the fixing plate 43 in the tip end direction X1. It is exposed in the state.
On the peripheral surface of the fixing plate 43, there is provided a screw hole 43b into which a connecting tool 41a penetrating an insertion hole 41b formed in the protective cover 41 is inserted and screw-connected. A plurality of screw holes 43b are preferably formed at equal intervals on the peripheral surface of the fixed plate 43, and FIG. 3 shows a case where three screw holes 43b are formed. Each screw hole 43b is formed according to the arrangement position of the insertion hole 41b of the protective cover 41 described above.

  The nut 44 is fastened to the threaded portion 72 of the sleeve 7 protruding from the insertion hole 43 a of the fixing plate 43, and attaches each cable end portion 2 with the sleeve to the fixing plate 43. 3 and 4 show a case where a washer 45 is provided between the fixing plate 43 and the nut 44.

(Eye bracket)
The eye metal fitting 46 is a component that constitutes the pooling eye 4 and is connected and fixed to the outer surface of the protective cover 41 and can be attached with a pulling instrument such as a rope, wire, or hook for wire drawing. Although not shown, there are cases where the bolt of the eye metal fitting is connected and fixed to the fixing plate. In FIG. 3, the eye metal fitting 46 is provided at the bottom of the protective cover 41 and has an annular portion 46 a.

[Protective cap]
The cable pulling structure 1 shown in FIG. 5 has a bottomed cylindrical protective cap 9 for protecting the conductor portion 6 protruding from the sleeve 7 in the distal direction X1 inside the protective cover 41 constituting the pooling eye 4. May further be included. The protective cap 9 is configured to cover the electrical connection portion 61 that is the tip side portion of the conductor portion 6. The protective cap 9 is coupled to the sleeve 7 by screwing a threaded portion formed on the inner peripheral surface on the opening side thereof into a screwing portion 72 that protrudes from the top surface of the nut 44 and extends in the distal end side direction X1. Has been.

  FIG. 6 shows another protective cap (protective cap 9A). The protective cap 9A shown in FIG. 6 is formed by integrally forming the protective cap 9 and the nut 44 shown in FIG. 5, and is screwed with the screwing portion 72 of the sleeve 7 on the opening side of the protective cap 9A. A threaded portion 91 </ b> A for positioning and fixing the distal end portion 2 of each sleeve-attached cable to the fixing plate 43 of the fixing member 42 is provided. The protective cap 9A has two roles of protecting the electrical connection portion 61 that is the tip side portion of the conductor portion 6 and fixing the tip portion 2 of the cable with sleeve 2 to the fixing member 42.

  FIG. 7 shows another protective cap (protective cap 9B). The protective cap 9 </ b> B has an annular flange 92 </ b> B that protrudes radially outward of the protective cap 9 </ b> B and contacts the opposing surface of the fixing member 42 by screw connection with the screwing portion 72 on the opening side. The protective cap 9B is in surface contact with the fixed plate 43 at the flange 92B.

  Since the electrical connection portion 61 of the conductor 6 is covered with the protective caps 9, 9A, 9B, the cable C can be pulled with the electrical connection portion 61 protected from the outside, and moisture and the like are protected. It is possible to effectively prevent the cap 9, 9A, 9B from entering the inside from the outside and adhering to the electrical connection portion 61. Furthermore, like the protective caps 9A and 9B, when the threaded portions 91A and 91B having the function of the nut 44 connected to the screwed portion 72 of the sleeve 7 are provided on the inner peripheral surface on the opening side, the number of parts is increased. (For example, nut 44) can be reduced.

[Sealing member]
Since the cable pulling structure 1 shown in FIG. 7 effectively seals between the flange 92B and the fixing plate 43 of the fixing member 42, the cable pulling structure 92B and the fixing member 42 (more strictly, the fixing plate 43) In between, the cyclic | annular 1st sealing member S1 is provided. The first sealing member S1 prevents moisture from entering the inside of the protective cap 9B from the outside of the protective cap 9B through the contact interface between the flange 92B and the fixing plate 43.
Furthermore, the cable pulling structure 1 shown in FIG. 7 has an inner peripheral surface of the insertion hole 43a and an outer peripheral surface of the sleeve 7 in order to effectively seal between the outer peripheral surface of the sleeve 7 and the inner peripheral surface of the insertion hole 43a. An annular second sealing member S2 is provided therebetween. The second sealing member S2 prevents moisture from entering the protective cap 9B from the cable body side through the insertion hole 43a.
The fixing plate 43 is formed with annular recesses for accommodating the first and second sealing members S1 and S2. As 1st and 2nd sealing member S1, S2, a well-known seal ring can be used, for example.

  The first and second sealing members S1 and S2 are disposed at the contact interface position between the conductor portion 6 and the sleeve 7, for example, when the conductor portion 6 is a copper stranded wire and the sleeve 7 is made of aluminum. Since it can comprise so that a water | moisture content may not penetrate | invade, it is preferable from a viewpoint of preventing dissimilar metal corrosion.

<Cable terminal>
Next, a description will be given of the cable terminal CT in which the terminal treatment is applied to the cable tip portion 2 with the sleeve. Here, “terminal processing” means that the terminal T is connected to the electrical connection portion 61 of the conductor portion 6 constituting the distal end portion of the cable C pulled to the installation location of the connection partner, that is, the distal end portion 2 of the cable with sleeve shown in FIG. This means a series of processes from mounting to covering the insulating and waterproof covering member R over a portion extending over the base end side of the terminal T and the insulating member 8.

The terminal T is a member connected to a connection partner, and is made of a metal material such as aluminum, an aluminum alloy, copper, or a copper alloy, and FIG. 8 shows a case where it is a plate-like terminal. The terminal T has a cylindrical opening, and the cylindrical opening is attached to the outer surface of the electrical connecting portion 61 in a state where the electrical connecting portion 61 of the conductor 6 is inserted into the cylindrical opening. Connected (connected) to the unit 6. The connection method includes crimping and compression, caulking, soldering, and the like, but any method is acceptable as long as it is electrically and mechanically satisfactory.
One main surface of the two main surfaces of the terminal T forms an energizing contact surface that is connected in contact with the connection partner.

  The covering member R preferably covers at least a portion extending from the cylindrical opening of the terminal T to the distal end portion of the sleeve 7. The material of the covering member R is not particularly limited as long as it has good insulation and waterproof properties, and examples thereof include rubber materials such as silicone rubber and EP rubber, or synthetic resin materials such as plastic.

<Modification 1>
Next, based on FIG. 9, the modification 1 of the cable front-end | tip part with a sleeve of a cable pulling structure is demonstrated. In addition, about the same structure as said embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted. FIG. 9 shows a cable tip with a sleeve according to the first modification. Specifically, FIG. 9 (a) shows a perspective view of the cable tip with a sleeve, and FIG. 9 (b) shows FIG. The tip of the cable with sleeve is partially shown in cross section on a plane including the axis of

  The conductor portion 6A of the cable end portion 2A with the sleeve shown in FIG. 9 is in an interconnected state between the conductor 6a stripped of the insulation coating of the cable C1 and the conductor extension member 6b disposed close to the extension of the conductor 6a. It consists of Specifically, the conductor extension member 6b is conductively connected to the conductor 6a via the sleeve 7A. The conductor extension member 6b has an electrical connection portion 61A connected to a connection partner at a portion protruding from the sleeve 7A in the distal end side direction X1.

  The conductor 6a and the conductor extension member 6b are made of a metal material such as aluminum, an aluminum alloy, copper, or a copper alloy. The form of the conductor 6a and the conductor extension member 6b has shown the case where it comprises with the strand wire formed by twisting several strands in FIG. For example, the conductor 6a may be composed of a plurality of aluminum wires, and the conductor extending member 6b may be composed of a plurality of copper wires.

  A sleeve 7A shown in FIG. 9 is different from the sleeve 7 of the above-described embodiment, and shows a case where two members respectively formed of different metal materials are joined and integrally formed. Specifically, the sleeve 7A has a first accommodating portion 7a that accommodates the distal end portion of the conductor 6a, and a second accommodating portion 7b that accommodates the proximal end portion of the conductor extending member 6b. The first accommodating portion 7a is formed in the shape of a hole having a bottom surface against which the front end surface of the conductor 6a abuts, and the second accommodating portion 7b is formed in the shape of a hole having a bottom surface against which the base end surface of the conductor extending member 6b abuts. However, the holes are not connected to each other and exist as independent holes. The second housing portion 7b has a threaded portion 71A used for fixing the sleeve-attached cable tip portion 2A to the fixing member 42 on the outer peripheral surface of the tip side portion.

  For example, from the viewpoint of preventing corrosion, it is preferable that the first housing portion 7a and the conductor 6a are made of the same material, and the second housing portion 7b and the conductor extension member 6b are made of the same member. For example, when the conductor 6a is made of an aluminum material, the first housing portion 7a is also made of an aluminum material, and when the conductor extension member 6b is made of a copper material, the second housing portion. 7b is also preferably made of a copper material. The sleeve 7A is formed by joining members (first and second accommodating portions 7a, 7b) made of different materials by, for example, friction welding.

  Also in the cable pulling structure using the cable tip portion 2A with the sleeve, the same effect as the above embodiment can be obtained.

<Modification 2>
Next, a second modification of the cable tip portion with the sleeve of the cable pulling structure will be described with reference to FIG. In addition, about the same structure as said embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted. FIG. 10 shows the structure of a cable tip with a sleeve according to the second modification. Specifically, FIG. 10 (a) shows a perspective view of the cable tip with the sleeve according to the second modification, and FIG. FIG. 10B is a plan view including the axis line of FIG. 10A, and shows the tip of the cable with sleeve partially in cross section.

  The conductor portion 6B of the cable end portion 2B with the sleeve shown in FIG. 10 is an interconnected state between the conductor 6c stripped of the insulation coating of the cable C2 and the conductor extension member 6d disposed close to the extension of the conductor 6c. It consists of Specifically, the conductor extension member 6d is electrically connected to the conductor 6c via the sleeve 7B. The conductor 6c has the same configuration as the conductor 6a of the first modification. On the other hand, the conductor extension member 6d shown in FIG. 10 is a rod-shaped member. This rod-shaped member may be made of a metal material such as aluminum, aluminum alloy, copper, or copper alloy. In particular, the material of the conductor extension member 6d is preferably selected according to the material of a terminal T or a connection partner to be described later. For example, when the terminal T or the connection partner is made of copper or a copper alloy, the conductor extension member 6d is preferably made of copper or a copper alloy as well.

  The conductor extension member 6d shown in FIG. 10 is connected and integrated with the sleeve 7B in a state of being inserted into the second accommodating portion 7d of the sleeve 7B. The screwing part 62B is formed on the conductor extension member 6d, and the screwing part 62B and the electrical connection part 61B are both provided on the part of the conductor extension member 6d exposed from the sleeve 7B to the front end side. ing. The electrical connection portion 61B is provided on the distal end side with respect to the screwing portion 62B.

  A sleeve 7B shown in FIG. 10 includes a first housing portion 7c and a second housing portion 7d. The sleeve 7B has the same configuration as the sleeve 7A of Modification 1 described above, except that the second accommodating portion 7d is not formed with a threaded portion.

  The conductor extension member 6d is inserted into the insertion hole 43a of the fixing member 42 as shown in FIG. The cable end portion 2B with the sleeve is fixed to the fixing plate 43 of the fixing member 42 by fastening the nut 44 to the portion of the screwing portion 62B protruding from the fixing plate 43 in the front end side direction X1. In the conductor extending member 6d, a portion (smooth peripheral surface portion) where the screwing portion 62B of the conductor extending member 6d is not formed is mainly located in the insertion hole 43a (see FIG. 11).

Next, the cable pulling structure using the cable tip portion 2B with the sleeve of the modification 2 will be described with reference to FIGS. 11 and 12 show the arrangement of the sealing members in the cable pulling structure.
A cable pulling structure 1A shown in FIG. 11 includes an annular third sealing member S3 provided between the outer peripheral surface of the conductor extension member 6d and the inner peripheral surface of the insertion hole 43a of the fixing plate 43. . Furthermore, an annular fourth sealing member S4 is provided on the abutting surface of the fixing plate 43 of the fixing member 42 where the sleeve 7B abuts.
Due to the arrangement of the sealing members S3 and S4, moisture enters the second housing portion 7d from the distal end side through the insertion hole 43a and from the proximal end side through the abutting surface between the fixing plate 43 and the sleeve 7B. This can be effectively prevented. Thereby, the penetration | invasion of the water | moisture content to the connection part of 6 d of conductor extension members and the 2nd accommodating part 7d of the sleeve 7 can be prevented. In particular, when the conductor extending member 6d is made of a copper material and the second housing portion 7d of the sleeve 7B is made of an aluminum material, the sealing members S3 and S4 are disposed from the viewpoint of preventing the corrosion of different metals. Is advantageous.

The cable pulling structure 1B shown in FIG. 12 is an annular fifth seal provided on the abutting surface of the fixing member 42 where the sleeve 7B abuts and is in close contact with the outer peripheral surface of the conductor extending member 6d. A stop member S5 is provided. A tapered receiving portion for accommodating the annular fifth sealing member S5 is formed on the periphery of the opening of the insertion hole 43a located on the abutting surface side of the sleeve 7B.
Due to the screw connection between the screwing portion 62B of the conductor extending member 6d and the nut 44, the cable tip with sleeve 2B is subjected to a force that is pulled in the tip side direction X1. The fifth sealing member S5 is pressed between the receiving portion of the fixing plate 43 and the abutting surface of the sleeve 7B, and more securely seals between the conductor extending member 6d and the insertion hole 43a.

  As the fifth sealing member S5, for example, a known seal ring can be used, and a Soroban ball type packing can also be used. When the Soroban ball-shaped packing is pressed by the receiving portion of the fixed plate 43, multi-directional stress, that is, anisotropic stress is generated inside the packing. When the sealing member S5 is a abacus ball type packing, for example, a housing portion (not shown) for housing the sealing member S5 is formed on the distal end side X1 of the second housing portion 7d of the sleeve 7B.

  Due to the presence of the fifth sealing member S5, it is effective for moisture to enter the second accommodating portion 7d from the distal end side X1 through the insertion hole 43a and through the abutting surface of the fixing plate 43 and the sleeve 7B. Can be blocked. That is, the sealing member S5 can prevent moisture from entering the connecting portion between the conductor extending member 6d and the second accommodating portion 7d of the sleeve 7. In the case where the conductor extending member 6d is made of a copper material and the second accommodating portion 7d of the sleeve 7B is made of an aluminum material, the arrangement of the sealing member S5 is advantageous from the viewpoint of preventing different metal corrosion.

  According to the present invention, since the terminal used for connection with the connection partner can be immediately attached to the electrical connection part simply by removing the pooling eye from the tip of the cable with sleeve, the connection workability with the connection partner is remarkably improved. Can be improved.

1,1A Cable pulling structure 2,2A, 2B Cable end with sleeve 4 Pooling eye 5 Cable insulation 6, 6A, 6B Conductor 6a, 6c Conductor 6b, 6d Conductor extension member 7, 7A, 7B Sleeve 7a, 7c 1st accommodating part 7b, 7d 2nd accommodating part 8 Insulating member 9 Protective cap 41 Protective cover 42 Fixed member 43 Fixed plate 43a Insertion hole 46 Eye metal fittings 61, 61A, 61B Electrical connection part 72 Screwing part 91A, 91B Thread cutting Part 92B Cone C, C1, C2 Cable T terminal CT Cable terminal R Covering member

Claims (15)

A conductor portion constituted by a conductor stripped from a cable insulation coating, or an interconnected state of the conductor and a conductor extension member disposed in proximity to the extension of the conductor; and the conductor portion, At least one cable end portion with a sleeve having a sleeve compressed and connected to the peripheral surface of the conductor portion in the inserted state;
A protective cover having an internal space for accommodating the tip of the cable with the at least one sleeve;
A fixing member that is detachably connected to the protective cover and that positions and fixes the end portion of each sleeve-attached cable within the protective cover; and a pooling eye having an eye fitting that is connected and fixed to the outer surface of the protective cover. ,
The conductor portion or the sleeve has a threaded portion threaded on the outer peripheral surface;
The cable pulling structure is characterized in that a portion of the conductor portion on the distal end side with respect to the screwing portion is exposed to the distal end side from the sleeve and constitutes an electrical connection portion connected to a connection partner. The conductor portion is composed of a conductor stripped off the insulation coating of the cable,
The threaded portion is formed on the sleeve;
The cable pulling structure according to claim 1, wherein the electrical connection portion is a portion exposed to the distal end side from the sleeve of the conductor. The conductor portion is configured in an interconnected state between the conductor and the conductor extension member via the sleeve,
The screwing portion is formed in the sleeve, and the electrical connection portion is a portion of the conductor extension member that is exposed from the sleeve to the distal end side. Cable towing structure. The conductor portion is configured in an interconnected state between the conductor and the conductor extension member via the sleeve,
The screwing portion is formed on the conductor extension member, and the screwing portion and the electrical connection portion are provided on a portion of the conductor extension member exposed to the tip side from the sleeve. The cable pulling structure according to claim 1, wherein:   The cable pulling structure according to claim 3 or 4, wherein the conductor extending member is a stranded wire formed by twisting a plurality of copper wires.   The cable pulling structure according to claim 4, wherein the conductor extending member is made of a copper bar.   The cable pulling structure according to claim 2, wherein the sleeve is made of aluminum. The portion of the sleeve that houses the conductor is made of aluminum,
The cable pulling structure according to any one of claims 3 to 6, wherein a portion of the sleeve that accommodates the conductor extension member is made of copper. The fixing member has an insertion hole having an inner diameter through which the screwing portion and the electrical connection portion can be inserted;
The cable pulling device according to any one of claims 1 to 8, wherein a bottomed cylindrical protective cap is provided to cover the threaded portion protruding from the insertion hole and the electrical connection portion. Construction.   10. The protective cap according to claim 9, further comprising: a threaded portion on an inner peripheral surface on the opening side, which is threadedly engaged with the threaded portion to position and fix the distal end portion of each cable with a sleeve to the fixing member. Cable pulling structure as described. The protective cap has an annular flange that protrudes radially outward on the opening side and contacts the opposing surface of the fixing member by screw connection with the screwing portion;
An annular first sealing member is provided between the flange and the fixing member, and an annular second sealing member is provided between the inner peripheral surface of the insertion hole and the outer peripheral surface of the sleeve. The cable pulling structure according to claim 10, wherein the cable pulling structure is provided on the cable pulling structure. The fixing member has an insertion hole having an inner diameter through which the conductor extension member can be inserted;
An annular third sealing member is provided between the outer peripheral surface of the conductor extension member and the inner peripheral surface of the insertion hole, and the annular fourth sealing member is the fixing member and the sleeve is The cable pulling structure according to any one of claims 3 to 8, wherein the cable pulling structure is provided on an abutting surface to be confronted. The fixing member has an insertion hole having an inner diameter through which the screwing portion and the electrical connection portion constituting the conductor extension member can be inserted;
The annular fifth sealing member is an abutting surface of the fixing member on which the sleeve is abutted, and is provided in a state of being in close contact with the outer peripheral surface of the conductor extension member. The cable pulling structure according to any one of 3 to 8.   The sleeve-attached cable distal end portion has an insulating member that covers at least a portion straddling the base end portion of the sleeve and the insulating coating while the electrical connection portion and the screwing portion are exposed. The cable pulling structure according to any one of claims 1 to 13. A conductor part constituted by a conductor stripped of an insulation coating of a cable, or an interconnected state of the conductor and a conductor extension member disposed in proximity to the extension of the conductor;
A sleeve that is compression-connected to the peripheral surface of the conductor portion in a state where the conductor portion is inserted, and an insulating member that covers at least a portion straddling the base end portion of the sleeve and the insulating coating; The conductor portion or the sleeve has a threaded portion threaded on the outer peripheral surface, and the conductor portion is connected to the distal end side of the threaded portion exposed from the sleeve to the distal end side. At least one cable tip with a sleeve constituting an electrical connection portion connected to the other party;
A terminal attached to the electrical connection portion;
An insulating and waterproof covering member covering at least a portion straddling the base end portion of the terminal and the distal end portion of the insulating member;
A cable terminal comprising:

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