JP2011249067A - Connection structure of cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connection structure of cables such that the cables are mechanically and electrically connected to each other with efficiency.SOLUTION: One of a first connection body C1 and a second connection body C2 has a female type terminal formed of an insertion hole 1002 into which a tip portion of the other connection body is inserted as a male type terminal. A cylindrical fixture (a slide fixture S) having an internal diameter large enough to insert the first connection body or second connection body is inserted by the first connection body or second connection body, formed to move from one connection body side to the other connection body side in a state in which the male type terminal is inserted into the female type terminal, and fixed straddling a junction of the first connection body and second connection body.

Description

  The present invention relates to a cable connection structure, and more particularly to a cable connection structure for connecting power cables to each other.

  Conventionally, in indoor wiring of high-rise buildings, hotels, condominiums, etc., low-voltage (for example, about 600 V) power cables for trunk lines are laid.

  Here, the connection of the power cable is performed by, for example, electrically connecting a plurality of trunk cables having an arbitrary length while sequentially engaging the male connector and the female connector.

  In the middle of each trunk cable, the branch wiring for each floor wiring is electrically connected via both connectors in the same manner as in the trunk cable.

  By the way, various techniques related to the cable connection structure have been proposed.

  For example, in Japanese Patent Application Laid-Open No. 2005-56687, a cap nut that can be screwed to a female connector is rotatably attached to a male connector, and the cap nut is sequentially placed between the ends of the trunk cables adjacent to each other vertically. Is configured such that the trunk cables are electrically connected to each other by screwing the cable into the female connector.

JP 2005-56687 A

  However, as described above, the conventional cable connection structure employs a screwing method in which the cap nut is screwed into the female connector.

  Therefore, when connecting adjacent upper and lower trunk cables, or when exchanging cables for some reason, the cap nut must be rotated many times. The work time required for connection was also long.

  An object of this invention is to provide the connection structure of the cable which can connect a cable efficiently mechanically and electrically.

  In order to solve the above-described problem, a cable connection structure according to the invention of claim 1 includes a first connection body provided at an end of the first cable having conductivity, and a second cable having conductivity. A second connection body provided at an end; and a cylindrical fixture that fixes the first connection body and the second connection body in a connected state, the first connection body or the first connection body One of the two connection bodies is formed with a female terminal composed of an insertion hole for inserting the tip of the other connection body as a male terminal, and the cylindrical fixture is the first connection body. Alternatively, it has an inner diameter through which the second connection body can be inserted, is inserted through the first connection body or the second connection body, and the male terminal is inserted and connected to the female terminal. In the first connection body side, the first connection body side is formed so as to be movable, and the first connection body side is formed. Characterized in that it is configured to be fixed in a state straddling the junction of the connecting member and the second connecting member.

  According to a second aspect of the present invention, there is provided a cable connection structure according to the first aspect, wherein the cylindrical fixture is elongated from one end of the first connection body or one end of the second connection body. A plurality of slits extending in the direction are formed in the body portion, and the cylindrical fixture is provided on the first connection body side or the second connection body from the one connection body side with the slit side as a head. A taper portion is formed on the outer peripheral surface to push the body portion of the cylindrical fixture from the inside through the slit when moved to the other connector side.

  According to a third aspect of the present invention, there is provided a cable connection structure according to the second aspect, wherein the cable connection structure is moved along the tapered portion on the first connection body side or the outer peripheral surface of the second connection body. In addition, an engagement portion is formed that engages with a distal end portion of the barrel portion of the cylindrical fixing tool to prevent the cylindrical fixing tool from moving to the other connecting body. .

  According to a fourth aspect of the present invention, there is provided a cable connection structure according to the third aspect of the present invention, wherein the barrel portion of the cylindrical fixture is engaged with the engagement portion in a state where the barrel portion is engaged with the engagement portion. It further has a ring-shaped member that is inserted from the rear end side of the cylindrical fixture and prevents movement of the cylindrical fixture.

  According to the present invention, the following effects can be obtained.

  That is, according to the first aspect of the present invention, there is provided a cable connection structure capable of mechanically and electrically connecting cables efficiently by a simple operation of fitting a cylindrical fixture. It becomes possible.

  According to the second aspect of the present invention, since the cylindrical fixture and the second connection body can be formed with a simple configuration, the cost required for connecting the cables can be reduced. .

  According to invention of Claim 3, a cylindrical fixing tool can be hold | maintained reliably and the reliability of the connection structure of a cable can be improved.

  According to invention of Claim 4, fixation of a cylindrical fixing tool can be made more reliable, and the reliability of the connection structure of a cable can be improved further.

It is a disassembled perspective view which shows the connection structure 10 of the cable which concerns on embodiment. It is sectional drawing which shows the structure of the female connector C1 used with the connection structure 10 of the cable which concerns on embodiment. It is sectional drawing which shows the structure of the male connector C2 used with the connection structure 10 of the cable which concerns on embodiment. They are a side sectional view (a) of a slide fixture S used in cable connection structure 10 concerning an embodiment, a front view (b), and a side sectional view of ring-shaped member 4001. It is a perspective view which shows the connection state of the connection structure 10 of the cable which concerns on embodiment. It is explanatory drawing which shows the connection state of the trunk line cable using the connection structure 10 of the cable which concerns on embodiment. It is explanatory drawing which shows the connection operation state of the connection structure 10 of the cable which concerns on embodiment. It is a perspective view which shows the structural example of the removal jig | tool Z which removes the slide fixing tool S of the connection structure 10 of the cable which concerns on embodiment. It is a perspective view of the front side which shows the structural example of the removal jig | tool Z which removes the slide fixing tool S of the connection structure 10 of the cable which concerns on embodiment. It is a perspective view of the back side showing an example of composition of removal jig Z which removes slide fixture S of cable connection structure 10 concerning an embodiment. It is a disassembled perspective view which shows the connection structure 20 of a cable. FIG. 2 is a partially exploded perspective view showing a cable connection structure 20. It is sectional drawing which shows the structure of the female connector C3 used with the connection structure 20 of a cable. It is sectional drawing which shows the structure of the male connector C4 used with the connection structure 20 of a cable. They are sectional drawing (a) and front view (b) which show the structure of the lock sleeve L used with the connection structure 20 of a cable. It is explanatory drawing which shows 2nd vertical groove part R3 and 2nd horizontal groove part R4 formed in the male connector C4 used with the connection structure 20 of a cable. It is explanatory drawing which shows the plunger 9001 used with the connection structure 20 of a cable.

  Hereinafter, the best mode for carrying out the present invention will be described more specifically with reference to the drawings. Here, in the accompanying drawings, the same reference numerals are given to the same members, and duplicate descriptions are omitted. In addition, since description here is the best form by which this invention is implemented, this invention is not limited to the said form.

  As shown in FIGS. 1 to 5, the cable connection structure 10 according to the present embodiment is an end portion of a conductive first cable (for example, a power supply side cable 11 as a trunk cable; see FIG. 6). And a male connector C1 (an example of a first connection body) provided at the end of a second cable having electrical conductivity (for example, a load-side cable 11 as a trunk cable; see FIG. 6). A connector C2 (an example of a second connection body), a slide fixture S (an example of a cylindrical fixture) that fixes the female connector C1 and the male connector C2 in a connected state, and a body of the slide fixture S In the state where the front end portion 3002 of the portion 3001 is engaged with the engaging portion 2004 of the male connector C2, the slide fixture S is inserted from the rear end side to prevent the slide fixture S from moving to the female connector C1 side. Is constructed from that ring-shaped member 4001 (see FIG. 4 (c), etc.).

  Note that a metallic annular electrode B is interposed between the female connector C1 and the male connector C2 in order to ensure electrical connection.

  The female connector C1 and the male connector C2 are not particularly limited, but are formed of a copper alloy or the like having good conductivity.

  The female connector C1 is formed with a female terminal constituted by an insertion hole 1002 into which the distal end portion 2002 of the male connector C2 is inserted as a male terminal.

  Further, a connection hole 1004 for connecting the cable 11 (see FIG. 6) is provided on the rear end side of the female connector C1, and a connection hole 2003 for connecting the cable 11 is provided on the rear end side of the male connector C2. It has been.

  In addition, although the thickness of the cable 11 is not specifically limited, For example, 60SQ-325SQ can be used.

  The slide fixture S has at least an inner diameter through which the female connector C1 can be inserted, and is inserted into the female connector C1. The male terminal 2002 of the male connector C2 is inserted into the female terminal 1002 of the female connector C1. In the connected state, it is formed so as to be movable from the female connector C1 side to the male connector C2 side, and is configured to be fixed in a state of straddling the joint between the female connector C1 and the male connector C2. Has been.

  In the slide fixture S, a plurality of slits A extending in the longitudinal direction from the end on the female connector C1 side are formed in the body portion 3001 (see FIGS. 1, 4A, 4B, etc.). When the slide fixing tool S is moved from the female connector C1 side to the male connector C2 side with the slit A side as the head, the body terminal 3001 of the slide fixing tool S is connected to the shaped terminal 2002 through the slit A. Is formed on the outer peripheral surface 2001 of the male connector C2 (see FIG. 1, FIG. 3, etc.).

  The outer peripheral surface 2001a of the male connector C2 is engaged with the claw-shaped tip 3002 of the body 3001 of the slide fixture S moved along the taper portion 2001, and the female connector of the slide fixture S is engaged. A stepped engagement portion 2004 that prevents movement to C1 is formed.

  The slide fixture S is not particularly limited, but can be made of metal such as brass or engineering plastic (for example, PPS (polyphenylene sulfide)).

  Further, as shown in FIGS. 1 and 2, a flange 1005 is formed on the periphery of the tip of the female connector C1 according to the present embodiment, but this is not essential.

  Further, when the slide fixture S is formed of engineering plastic, it is necessary to increase the thickness as a whole in order to maintain the strength as compared with the case of using metal, but the basic shape is common. .

  Next, how to connect the cable connection structure 10 having the above-described configuration will be described.

  Here, although not particularly limited, the connection of the power supply side cable and the load side cable 11 as a trunk cable using the cable connection structure 10 is generally performed at a site where the cable is laid.

  However, the female connector C1 and the male connector C2 of the cable connection structure 10 are in a state of being connected to the ends of the power supply side cables and the load side cables 11 in advance by caulking or the like in a factory or the like.

  In FIG. 1, FIG. 5, FIG. 7, etc., the power supply side cable and the load side cable 11 as the trunk cable are still connected to the female connector C1 and the male connector C2 for the sake of simplicity. It shall indicate the state that is not.

  First, an operation for attaching the female connector C1 and the male connector C2 to a cable performed in a factory or the like will be described.

  As shown in FIG. 1, the female connector C1 is in a state in which the slide fixture S is fitted from the rear end side of the female connector C1 and is slid in the distal direction (D1 direction) (see FIG. 7).

  The ring-shaped member 4001 is loosely fitted to the rear end of the slide fixture S.

  As shown in FIG. 7, a metal or resin retaining ring T is provided on the rear end side of the slide fixture S in order to prevent the slide fixture S from falling off.

  Instead of using the retaining ring T, an engagement hole is provided at the rear end portion of the slide fixture S, and the slide fixture S is engaged with the engagement hole and a plunger provided on the female connector C1 side. It may be fixed.

  Further, the annular electrode B is attached in advance to the attachment portion 1003 in the female connector C1.

  Next, the tip of the cable 11 is inserted into the connection hole 1004 of the female connector C1, and the cable 11 is connected and fixed to the female connector C1 by caulking.

  On the other hand, for the male connector C2, the tip of the cable 11 is inserted into the connection hole 2003, and the cable 11 is connected and fixed to the male connector C2 by caulking.

  Next, connection work of the cable connection structure 10 at the cable laying site will be described.

  As shown in FIG. 7, the distal end side of the slide fixture S and the distal end portion 2002 of the male connector C2 are opposed to each other, and the body portion 3001 of the slide fixture S is pushed into the male connector C2 side.

  Thereby, the trunk | drum 3001 of the slide fixing tool S is moved so that it may be pushed and expanded from the inside via the slit A by the taper part 2001a formed in the outer peripheral surface 2001 of the male connector C2.

  When the claw-like tip 3002 of the body 3001 of the slide fixture S arrives at the stepped engagement portion 2004 formed at the end of the taper portion 2001a of the male connector C2, the slide fixture S The claw-shaped tip portion 3002 is automatically engaged with the engaging portion 2004 by the elastic force (plastic stress) of the body portion 3001.

  Thereby, the movement of the slide fixture S to the female connector C1 is prevented, and the state where the female connector C1 and the male connector C2 are connected can be reliably held.

  Further, the ring-shaped member 4001 is fitted from the rear end side of the slide fixture S in a state where the front end portion 3002 of the body portion 3001 of the slide fixture S is engaged with the engagement portion 2004 of the male connector C2. The connection work of the female connector C1 and the male connector C2 as shown in FIG.

  Thereby, fixation of the slide fixing tool S can be made more reliable, and the reliability of the cable connection structure 10 can be further improved.

  As described above, according to the cable connection structure 10 of the present invention, the cables can be mechanically and electrically connected efficiently by a simple operation of simply fitting the slide fixture S to the male connector C2 side. The effect of doing can be obtained.

  In addition, since the slide fixture S, the male connector C2, and the like can be formed with a relatively simple configuration, the cost required for connecting the cables can be reduced.

  In FIG. 6, a plurality of trunk cables 11 having a length corresponding to the required number of floors such as a high-rise building are sequentially connected up and down by the cable connection structure 10 according to the present embodiment to produce a trunk line. Indicates the state.

  In FIG. 6, each trunk cable 11 shows a case where a core wire (conductor) is covered with an insulating coating, and each trunk cable 11 is connected to a female connector 12 at an upper portion thereof, and a male connector at a lower portion thereof. 13 are connected.

  Further, three branch wirings 15 for each floor wiring are connected to a middle portion of each main cable 11 through a branch mold 14 at a constant pitch.

  In the production of such a trunk line, by applying the cable connection structure 10 according to the present embodiment, the work efficiency can be improved and the cost required for cable connection can be reduced.

  In the present embodiment, the female connector C1 is described as an example of the first connection body, and the male connector C2 is described as an example of the second connection body. However, the relationship between the two may be reversed. That is, even if the female connector is an example of the second connection body and the male connector is an example of the first connection body, the cables can be similarly connected.

  Here, with reference to FIGS. 8 to 10, the configuration of the dedicated removal jig Z used when removing the slide fixture S in the cable connection structure 10 according to the present embodiment will be briefly described.

  The removal jig Z includes a C-shaped first member 5001, a second member 5002, and a bolt 5004 and a nut 5003 that pivotally support one end portions of the first member 5001 and the second member 5002. Has been.

  The free ends 5001a and 5002b of the first member 5001 and the second member 5002 are configured to overlap each other when the first member 5001 and the second member 5002 are closed via the bolt 5004 and the nut 5003. .

  As shown in FIG. 9, the removal jig Z is formed with a removal portion 5005 (consisting of 5005 a and 5005 b) protruding in an annular shape on one surface in the closed state.

  Note that the outer diameter of the end portion of the removal portion 5005 is set to be approximately the same size as the inner diameter of the end portion of the slide fixture S.

  Further, a taper for expanding the end portion 3002 of the slide fixture S is formed on the outer peripheral edge portion of the removal portion 5005.

  When the engaged slide fixture S is removed from the cable connection structure 10 using the removal jig Z, first, as shown in FIG. 8, first member 5001 and second member 5002 are used. Are opened via bolts 5004 and nuts 5003.

  Next, with respect to the already-connected cable connection structure 10 as shown in FIG. 5, the removal treatment across the male connector C2 is performed so that the removal portion 5005 faces the end portion 3002 of the slide fixture S. The tool Z is closed.

  The ring-shaped member 4001 of the cable connection structure 10 is removed in advance.

  Subsequently, the removal jig Z is manually slid in the direction D2 shown in FIG. 5 so that the removal portion 5005 is pushed into the end portion 3002 of the slide fixture S.

  As a result, the claw-like end portion 3002 of the slide fixture S is pushed outward by the taper action of the removal portion 5005, and the engagement state with the step-like engagement portion 2004 of the male connector C2 is released. Then, the slide fixture S can be removed.

  Thus, by using the removal jig Z, when the slide fixture S needs to be removed, the removal operation can be performed easily and quickly.

  Next, the configuration of the cable connection structure 20 other than the configuration described above will be described for reference.

  As shown in FIGS. 11 to 17, the cable connection structure 20 includes a female connector C3 provided at an end of a first conductive cable (for example, a power supply side cable as a trunk cable), and a conductive structure. A male connector C4 provided at an end of a second cable (for example, a load side cable as a trunk cable), and a lock sleeve L for fixing the female connector C3 and the male connector C4 in a connected state. Prepare.

  In addition, a lock sleeve L is attached to either the female connector C3 or the male connector C4, and a lock protrusion (lock pin) 8002 is provided on the inner peripheral side of the lock sleeve L, and the outer periphery of the other connector. On the side, a lock groove 500 is provided on which the lock protrusion 8002 is slidably engaged.

  The lock groove portion 500 includes a groove opening 501 formed on an end surface on the lock sleeve L side of the connector provided with the lock groove portion 500, the groove opening 501 communicated with the tip portion, and the lock protrusion 8002 connected to the lock sleeve L of the lock sleeve L. A first vertical groove portion R1 that can move in the axial direction, and a first horizontal groove portion that communicates with the inner portion of the first vertical groove portion R1 and that can rotate the lock protrusion 8002 around the axis of the lock sleeve L. R2, a second vertical groove portion R3 that communicates with the inner portion of the first lateral groove portion R2 and can move the lock protrusion 8002 in a direction opposite to the axial direction of the lock sleeve L, and the second vertical groove. A second lateral groove portion R4 that communicates with the inner portion of the portion R3 and can rotate the lock protrusion 8002 in the same direction as the axis is provided.

  Further, at least one of the female connector C3 and the male connector C4 may be provided with a spring (urging means) that urges the lock protrusion 8002 toward the inner wall 8003 of the lock groove 500.

  Further, a plunger 9001 having a protruding portion 9002 biased in a direction protruding from the inner periphery 8003 side of the lock sleeve L is provided on the inner periphery 8003 side of the lock sleeve L, and a female connector C3 or a male connector C3 is provided. An engaging portion 8005 with which the protruding portion 9002 is engaged is provided on one inner peripheral side of the shape connector C4.

  A metallic annular electrode B is interposed between the female connector C3 and the male connector C4 in order to ensure electrical connection.

  The female connector C3 and the male connector C4 are not particularly limited, but are formed of a copper alloy or the like having good conductivity.

  Next, how to connect the cable connection structure 20 having the above-described configuration will be described.

  In FIG. 11, FIG. 12, and the like, for simplification of description, the power supply side cable and the load side cable as the trunk cable are not yet connected to the female connector C3 and the male connector C4. Shall.

  First, as shown in FIG. 12, the lock sleeve L is attached with a lock screw 8002 through a groove 6003 provided in the female connector C3.

  Next, the insertion hole 6002 of the female connector C3 and the tip portion 7002 of the male connector C4 are opposed to each other.

  A plunger 9001 is inserted into the mounting hole 7004 provided in the male connector C4.

  Subsequently, the lock screw 8002 on the distal end side of the lock sleeve L is engaged from the groove 501 of the lock groove portion 500 while the distal end portion 7002 of the male connector C4 is inserted from the insertion portion 8003 on the distal end side of the lock sleeve L.

  Then, an operation of moving along each groove in the order of the first vertical groove portion R1 → first horizontal groove portion R2 → second vertical groove portion R3 → second horizontal groove portion R4 (approximately 90 degrees as a whole). Move).

  When the lock screw 8002 reaches the back of the second lateral groove portion R4, the protruding portion 9002 of the plunger 9001 is automatically engaged with the engaging portion 8005 by the elastic force at that position.

  As a result, the distal end portion 7002 of the male connector C4 is mechanically and electrically connected to the insertion hole 6002 via the annular electrode B and is held in that state.

  Although the invention made by the present inventor has been specifically described based on the embodiments, the embodiments disclosed herein are illustrative in all respects and are not limited to the disclosed technology. Should not be considered. That is, the technical scope of the present invention should not be construed restrictively based on the description in the above embodiment, but should be construed according to the description of the scope of claims. All modifications that fall within the scope of the claims and the equivalent technology are included.

  The cable connection structure according to the present invention can be applied to connection of a trunk cable or the like.

10 Cable connection structure 500 Lock groove 501 Groove 1002 Insertion hole (female terminal)
1003 Mounting portion 1004 Connection hole 2001 Outer peripheral surface 2001a Tapered portion 2002 Tip portion (male terminal)
2003 Connection hole 2004 Engagement section 3001 Body section 3002 Tip section 4001 Ring-shaped member 5001 C-shaped member 5001a Free end 5002 Member 5003 Nut 5004 Bolt 5005 (5005a, 5005b) Removal section 6002 Insertion hole 6003 Groove 7002 Tip section 7004 Mounting hole 8002 Lock projection 8002 Lock screw 8003 Inner wall 8005 Engagement part 9001 Plunger 9002 Protrusion part A Slit B Ring electrode C1 Female connector C2 Male connector S Slide fixture Z Removal jig 20 Cable connection structure 11 Power supply side cable, load side cable 12 Female connector 13 Male connector 14 Branch mold 15 Branch wiring C3 Female connector C4 Male connector L Lock sleeve R1 First vertical groove portion R2 First horizontal groove portion R3 Second vertical groove Part R4 second lateral groove portion

Claims (4)

A first connection body provided at an end of the first cable having conductivity;
A second connection body provided at an end of the second cable having conductivity;
A cylindrical fixture for fixing the first connection body and the second connection body in a connected state;
One of the first connection body or the second connection body is formed with a female terminal composed of an insertion hole for inserting the tip of the other connection body as a male terminal,
The cylindrical fixture has an inner diameter through which the first connection body or the second connection body can be inserted, and is inserted into the first connection body or the second connection body, and the male shape In a state where the terminal is inserted and connected to the female terminal, the terminal is formed so as to be movable from one connection body side to the other connection body side, and a joint portion between the first connection body and the second connection body is formed. A cable connection structure characterized by being configured to be fixed in a straddling state. The cylindrical fixture is
A plurality of slits extending in the longitudinal direction from one end of the first connector or the second connector are formed in the body,
In the first connection body side or the second connection body,
When the cylindrical fixture is moved from one connecting body side to the other connecting body side with the slit side as the head, a taper that pushes the body of the cylindrical fixing device from the inside through the slit. The cable connection structure according to claim 1, wherein the portion is formed on an outer peripheral surface.   The outer peripheral surface of the first connector or the second connector is engaged with the front end of the barrel of the cylindrical fixture moved along the tapered portion, and the cylinder The cable connection structure according to claim 2, wherein an engagement portion that prevents movement of the shaped fixture to the other connection body is formed.   In the state where the front end of the barrel portion of the cylindrical fixture is engaged with the engaging portion, the cylindrical fixture is inserted from the rear end side to prevent the cylindrical fixture from moving. The cable connection structure according to claim 3, further comprising a ring-shaped member.

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