JP4775845B2 - Connection terminal or bypass cable - Google Patents

Description

  The present invention relates to a connection terminal or a bypass cable fixed to an end portion of a cable, and in particular, to a connection terminal fixed to an end portion of a bypass cable used when exchanging a meter such as a watt hour meter or the connection thereof. The present invention relates to a bypass cable having a terminal.

Until now, when replacing a meter such as an electricity meter from a new one to a new one, a bypass cable has been used. The bypass cable is fixed to the cable body, one connection terminal fixed to one end of the cable body, and electrically connected to the power supply side cable fixed to the instrument, and the other end of the cable body. The other connection terminal electrically connected to the load side cable is provided, and by using such a bypass cable, the instrument can be exchanged without a power failure. That is, a case where the watt hour meter is replaced using the bypass cable will be described as an example. As shown in FIG. 7, the one connection terminal is connected to the power source side cable C ₁ connected to the watt hour meter M. 52 were electrically connected, by electrically connecting the other connection terminal 53 to the load side cable C _6, constituting the bypass cable 50 and the power source side cable C ₁ and the load-side cable C ₆ Connection is made via the cable body 51. Similarly, the power source side cable C ₂ and the load side cable C ₅ and the other bypass cable 50, also the power source side cable C ₃ and the load side cable C ₄ and the other bypass cable 50, connected respectively. Therefore, even if the power supply side cables C ₁ , C ₂ , C ₃ and the load side cables C ₆ , C ₅ , C ₄ are removed from the watt-hour meter M by using these three bypass cables 50 respectively. The load side will not be out of power. Therefore, in the example mentioned above, the electricity meter M can be replaced | exchanged without a power failure by using the three bypass cables 50, respectively.

By the way, all the power-side cables C ₁ , C ₂ , C ₃ and load-side cables C ₆ , C ₅ , C ₄ connected to the watt-hour meter M are covered with an insulating material except for the crimp terminals on the tip side. In addition, partition plates W ₁ , W ₂ , W ₃ , W ₄ , W ₅ , W ₆ , W ₇ erected on the front side from the base plate are respectively provided on the left and right sides of the crimp terminal. Therefore, electrical connection cannot be achieved by directly connecting the connection terminals 52 and 53 constituting the bypass cable 50 to a crimp terminal not covered with an insulating material. Therefore, conventionally, a technique related to the connection terminal used for the operation of exchanging the meter such as the watt-hour meter M has been proposed under the name of an uninterruptible replacement tool. As shown in FIG. 8, the uninterruptible replacement tool 60 includes a cable holding member 61 and an electrode screw 62 screwed to the cable holding member 61 (see Patent Document 1). The cable holding member 61 is integrally formed of resin so that the power supply side cables C ₁ , C ₂ , C ₃ or the load side cables C ₆ , C ₅ , C ₄ are inserted from the side. In addition, it is formed in a substantially C shape and has a screw hole (the reference numeral is omitted). The electrode screw 62 is screwed into the screw hole, and its tip approaches or separates from the power-side cable C ₁ (or load-side cable C ₆ ) or the like by being advanced or retreated. The blade portion 62a that breaks the insulating material I covered with the power supply side cable C ₁ (or the load side cable C ₆ ) or the like is formed at the tip. Therefore, when the electrode screw 62 arranged on the connection terminal main body 61 is screwed, the insulating material I covered with the power supply side cable C ₁ (or the load side cable C ₆ ) or the like is broken, and the electrode screw 62 and the power supply side cable C ₁ (or load side cable C ₆ ) and the like are connected.
JP-A-8-75791

However, since the uninterruptible replacement tool described above cannot visually check the connection state between the tip of the electrode screw 62 and the power supply side cable C ₁ (or load side cable C ₆ ) or the like, It cannot be confirmed that both are connected. Needless to say, when the screwing operation of the electrode screw 62 is insufficient, the electrode screw 62 is not connected to the power supply side cable C ₁ (or the load side cable C ₆ ) or the like. When C ₁ (or load-side cable C ₆ ) or the like is removed from the watt-hour meter M, the load side will fail. For this reason, in the said uninterruptible replacement tool, in order to ensure safety, the operation | work which confirms whether both are reliably connected, for example with a lamp | ramp, a clamp ammeter, etc. becomes indispensable. On the other hand, if the electrode screw 62 is excessively screwed, there is a risk of cutting the power supply side cable C ₁ (or the load side cable C ₆ ) or the like. Furthermore, in the above uninterruptible replacement tool, since the insulating material I covered with the power supply side cable C ₁ (or the load side cable C ₆ ) or the like is broken, the exchange of the meter such as the watt hour meter M is completed. After doing so, the broken part must be repaired.

  Therefore, the present invention has been proposed to solve the problems of the above-described conventional technology, and the connection state with the power-side cable or the load-side cable can be visually confirmed, and the power-side cable Alternatively, it is an object of the present invention to provide a novel connection terminal or bypass cable that does not damage or break the insulating member of the load side cable.

The present invention has been proposed to solve the above problems, and the first invention (the invention according to claim 1) relates to a connection terminal, and includes a power supply side cable connected to a meter and A connection terminal disposed at an end of a bypass cable connected to the load side cable, the terminal body facing the front of the power supply side cable or the load side cable, and the base end is fixed to the terminal body, tip to tip with formed by a free end is formed one of the locking portion, and the belt-like band middle portion is brought wrap on the back side of the power source side cable or load side cable,
The other locking portion formed on the terminal body, to which the one locking portion is locked , and screwed to the terminal body and screwed so that the tip is connected to the power-side cable or the load. comprising a screw member for pressing the terminal side cable, and by engaging the upper Symbol hand and the other engaging portion with each other is characterized in that fixed to the terminal body.

  The terminal body constituting the first invention is arranged at the end of the bypass cable, and is not particularly limited in its shape and size as long as it is formed of at least a conductive material. Absent. Further, the band has a base end fixed to the terminal body and a distal end a free end. When this connection terminal is connected to the power supply side cable or the load side cable, the middle part of the band is a part that is wound around the back side of the power supply side cable or the load side cable, and the tip is the terminal body. It is a site | part fixed by the fixing | fixed part formed in this. It should be noted that the material of this band is not limited to whether it is a conductive material or an insulating material. On the other hand, the screw member needs to be formed of a conductive material, and the tip directly contacts (pressure-contacts) a terminal portion that is a power-side cable or a load-side cable and is not covered with an insulating material. There is a need.

  According to a second invention (invention of claim 2), in the first invention, the band is formed into a thin plate shape with a conductive material and has flexibility. Is.

Further, according to a third invention (invention according to claim 3 ), in any one of the first and second inventions, the tip of the terminal body is longer than the fixed position of the band. The screw member is arranged on the distal end side of the terminal body with respect to the fixed position of the band.

A fourth invention (the invention according to claim 4 ) relates to a bypass cable, characterized in that it comprises a connection terminal according to any one of the first to third inventions. It is.

When the connection terminals according to the first to third inventions are attached to the terminals of the power supply side cable or the load side cable, the band whose tip is a free end is connected to the power supply side cable or the load side cable. was wrap on the back side, formed around the insulating material coated on the cable in the vicinity of the terminal or the terminal of the power source side cable or load side cable, the locking portion of one formed in the distal end to the terminal main body The other locking portion is locked . Next, the screw member is screwed and the tip is pressed against the terminal of the power supply side cable or the load side cable. By such an operation, the screw member and the terminal of the power supply side cable or the load side cable are electrically and mechanically connected. In the case of a bypass cable provided with such a connection terminal, the connection terminal disposed at one end is connected to a predetermined power supply side cable, for example, in the manner described above, and the connection disposed at the other end. In the same way, connect the terminal to the load side cable that has a corresponding relationship with the power source side cable. By such an operation, the predetermined power supply side cable and the load side cable are connected via the bypass cable.

In the connection terminal according to the first invention (the invention according to claim 1), the base end is fixed to the terminal body and the tip is a free end, and the tip is a band fixed to the terminal body, Since the band wraps around the back side of the power supply side cable and load side cable fixed to the instrument, it should be fixed to the terminal of the power supply side cable and load side cable or an insulating material covered in the vicinity of the terminal. When the screw member is screwed, the screw member directly presses against the terminal of the power supply side cable or the load side cable and is electrically connected. Therefore, according to the connection terminal according to the first invention (or the bypass cable according to claim 4 in which the connection terminal is arranged), the operator can connect the tip of the screw member to the power supply side cable or the load side cable. The connection state can be visually checked, and it is not necessary to confirm whether or not the two are securely connected by a lamp, a clamp ammeter, or the like. In addition, since the screw member is configured to press-contact the terminal of the power supply side cable or the load side cable, it is necessary to directly contact the screw member and the wire portion of the power supply side cable or the load side cable as in the above-described conventional technology. Furthermore, since it is not necessary to provide a blade portion for breaking through the insulating material covering the cable at the tip of the screw member, there is no risk of cutting the power supply side cable or the load side cable. Moreover, in this invention, since the insulating member covered with the power supply side cable or the load side cable is not broken, it is also freed from the work of repairing the broken part after the exchange of the meter such as the watt hour meter is completed. Thus, work with good efficiency can be realized. In particular, in the first aspect of the present invention, one locking portion is formed at the other end of the band, and the other locking portion to which the one locking portion is locked is formed at the terminal body. Thus, the one and the other locking portions are fixed to the terminal body by locking each other, so that the operability is simplified and the operation can be performed more quickly.

  In the second invention (the present invention described in claim 2), since the band is formed into a thin plate shape with a conductive material and has flexibility, the band is connected to the power supply side cable or the load side cable. In the case where it can be wound around the terminal, it is possible to achieve electrical connection with the power supply side cable or the load side cable even between the bands.

In the third invention (the invention described in claim 3 ), the tip of the terminal body is extended in the length direction of the terminal body from the fixing position of the band, and the screw member is fixed to the band. Since it is arranged on the tip side of the terminal body from the position, the part that can be wound by the band is the insulating material of the power side cable and the load side cable, and even if it is slightly separated from the terminal, the above The tip of the screw member can be securely pressed against the terminal of the power supply side cable or the load side cable.

  Hereinafter, a bypass cable according to a preferred embodiment of the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, the bypass cable 1 according to this embodiment is detachably attached to a cable body 2, one connection terminal 3 fixed to one end of the cable body 2, and the other end of the cable body 2. And the other connection terminal 4 connected to. The cable body 2 is composed of one or a plurality of electric wires (not shown) and an insulating material covering the electric wires, and the one connection terminal 3 is connected to the electric wires. In addition, one case member 6 formed in a cylindrical shape is fixed to the other end of the cable body 2, and the other connection terminal 4 has a columnar shape inserted into the case member 6. The insertion member 7 is fixed. In addition, one terminal part (not shown) connected to the electric wire of the cable body 2 is formed on the inner periphery of the case member 6, while the one terminal part is formed on the outer periphery of the insertion member 7. The other terminal portion (not shown) to be connected is formed.

  The one connection terminal 3 is a connection terminal according to the present invention (the invention according to claim 1), and one terminal body 8 and one terminal body 8 having a base end fixed to the one terminal body 8. The band 9 and the one screw member 10 screwed to the one terminal body 8 are configured. The one terminal body 8 is connected to an electric wire (not shown) constituting the cable body 2 and is formed into a substantially flat plate shape with a conductive material. As shown in FIG. In addition, a screw hole 8a in which one screw is threaded on the inner peripheral surface is formed in the leading end side middle portion of the one terminal body 8. Also, one slit 8b that is slightly wider is formed on the side of the screw hole 8a. In addition, this one slit 8b is the other latching | locking part by which the front end side of the one band 9 mentioned later is latched. The one band 9 is formed into a thin band shape using a conductive material such as copper, the base end is welded to the side surface of the one terminal body 8, and the tip is a free end. In addition, a grip portion 9 a formed of an insulating material is fixed to the tip of one band 9 that is a free end. The one band 9 is flexible and has a thickness that is at least thinner than the width of one slit 8b formed in the one terminal body 8. The one screw member 10 is formed of a conductive material and has a shaft portion 10a on the outer periphery of which the other screw (reference numeral is omitted) is screwed, and is fixed to one end of the shaft portion 10a by an insulating material. It is comprised from the shape | molded head 10b.

  Also, the other connection terminal 4 basically has the same configuration as the one connection terminal 3, and is composed of the other terminal body 11, the other band 12, and the other screw member 13. The other terminal body 11 is formed with a screw hole 11a into which the other screw member 13 is screwed, and the other slit 11b. Similarly, a grip portion 12a made of an insulating material is fixed to the tip of the other band 12 which is the free end. As described above, the other connection terminal 4 has the insertion member 7 inserted into the case member 6 fixed to the other end of the cable body 2 fixed thereto. Similarly to the connection terminal 3, the other connection terminal 4 may be directly fixed to the other end of the cable body 2.

Therefore, hereinafter, the three power supply side cables fixed to the watt-hour meter M using the bypass cable 1 in which the other connection terminal 4 is directly fixed to the other end of the cable body 2. A process of removing C ₁ , C ₂ , C ₃ and the three load side cables C ₄ , C ₅ , C ₆ from the watt-hour meter M will be described in order.

First, the power source side cable C _1, the description will be given of a method for fixing one of the connection terminals 3 constituting the bypass cable 1, the tip of one of the band 9 above, the position of the crimp terminal of the power source side cable C ₁ at a position lower than the tip with turning back side of the power source side cable C ₁ is moved to the front side, by operating as an intermediate portion of one of the band 9 wherein is located behind the power source side cable C ₁ The one terminal body 8 and the one band 9 (one connection terminal 3 as a whole) are moved upward while grasping the grasping portion 9 a fixed to the tip of the one band 9. Then, the one band 9 moves to the vicinity of the crimp terminal T ₁ formed at the tip of the power supply side cable C ₁ (not covered with an insulating material). In this way, the one band 9 moves to the vicinity of the crimp terminal T ₁ between the partition plate W ₁ and the partition plate W ₂ formed on the left and right sides of the distal end side of the power supply side cable C ₁ . A slight gap formed between them and a slight gap formed between the upper surface of the base plate part (reference numerals are omitted) on which these partition plates W ₁ and W ₂ are formed and the power supply side cable C ₁ . This is because the one band 9 can be passed through the gap. Next, the one band 9 is inserted into one slit 8b formed in one terminal body 8, and the grip 9a and one slit 8b are engaged with each other so that the band 9 is connected to one terminal body. Fix to 8. Through these operations, as shown in FIG. 2, one of the band 9 above is in a state wound around the crimp terminal T ₁ of the power source side cable C _1. In the above description, the one terminal body 8 is moved upward before the gripping portion 9a and the one slit 8b are engaged with each other. after the slit 8b engaged with each other, may be moved across one connection terminal 3 to the vicinity of the crimp terminal T _1.

When the above operation is completed, the screw member 10 screwed into the screw hole 8a is screwed while gripping the screw member 10 and the head 10b, and the tip of the screw member 10 is connected to the power source side. It is pressed against the crimped terminal of the cable C _1. Through these operations, as shown in FIG 3, the one connection terminal 3 described above, completely it is fixed to the power source side cable C _1, are electrically connected. When the fixing operation of the one connection terminal 3 is completed, the other connection terminal 4 is connected to the load side cable C ₆ having a corresponding relationship with the power source side cable C ₁ . The operation of connecting the other connection terminal 4 to the load side cable C ₆ is the same as the operation of connecting the one connection terminal 3 to the power supply side cable C ₁ , and thus the description thereof is omitted. In this way, the work via the bypass cable 1 connecting the power source side cable C ₁ and the load side cable C ₆ is completed, then, in the same way, via the bypass cable 1, the power source side cable C ₂ Load connecting the side cable C _5, further connects the power source side cable C ₃ and the load side cable C _4. When such operation is completed, as shown in FIG. 4, three using the bypass cable 1,1,1, and the power source side cable C ₁ and the load side cable C _6, the power source side cable C ₂ and the load side cable and C _5, the power source side cable _{C 3} and the load side cable _{C 4} are respectively connected.

When this operation is completed, the securing each crimp terminal _T 1 through T ₃ of the power source side cable _C 1 -C ₃ volt _B 1 .about.B ₃ and, the load side cable _{C 6, C} 5, The bolts B _{6 to} B ₄ fixing the crimp terminals C _{6 to} T ₄ of C ₄ are screwed out and removed from the watt-hour meter M. In order to prevent the operator an electric shock during working, when removed the power source side cable C _1, etc. and the load-side cable C ₆ and the like from the electricity meter M is not shown, which is formed of an insulating material insulating Caps are put on the parts connected to each other. By working as described above, removing all power side cable C ₁ -C ₃ and the load-side cable C ₆ -C ₄ from the power meter M, then with detached the electricity meter M, not a new illustrated Attach the watt hour meter, and fix the power source side cables C _{1 to} C ₃ and the load side cables C _{6 to} C ₄ to the new watt hour meter again, and all the power source side cables C _{1 to} C ₃ and the load side cable C after the ₆ -C ₄ fixed, remove the above-mentioned bypass cable 1,1,1 series of operations are completed.

Thus, bypass cable 1 described above (or the connection terminals 3 and 4) According to simply disconnect the power source side cable C ₁ and the load-side cable C ₆ uninterruptible, only can exchange energy meter M Instead, it can be visually observed that the tip ends of the one screw member 10 and the other screw member 13 are securely connected to the crimp terminals T ₁ and T ₆ of the power supply side cable C ₁ and the load side cable C _6. since it, the lamp (not shown), by a clamp ammeter or the like, for example, work with one of the connecting terminals 3 and the power source side cable C ₁ to confirm whether or not it is connected is not required. In addition, since the screw member is configured to press-contact the terminal of the power supply side cable or the load side cable, it is necessary to directly contact the screw member and the wire portion of the power supply side cable or the load side cable as in the above-described conventional technology. no news, because should also not provided the blade portion to break through the insulating material covering the cable to the screw member tip, there is no danger of cutting the power source side cable C ₁ or the load-side cable C ₆ or the like. Moreover, the bypass cable 1 (or the connection terminals 3 and 4) in, since there is no need to break the coated insulating member to the power source side cable C ₁ or load side cable C _6, the exchange of energy meter M After the process is completed, the operation of repairing the broken part is also released, and an efficient operation can be realized.

Furthermore, according to the bypass cable 1 (or each of the connection terminals 3 and 4) according to this embodiment, since the one (and the other) band 9 (12) is made of a conductive material, the screw member 10 (13 ) As well as in this one (and the other) band 9 (12), a conductive state can be secured. Furthermore, in this bypass cable 1 (or each of the connection terminals 3 and 4), the one (and the other) screw member 10 (13) is screwed to move the one (and the other) band 9 (12). ) becomes tightening the power source side cable C _{1 (or} load side cable C _6), eventually the power source side cable C ₁ and the like, to be fixed to the power source side cable C ₁ or the like by this band 9 and the screw member 10 from, it is possible to prevent the risk that the connection terminal 3 in the middle work accidentally fall off from the power source side cable C ₁ and the like.

  In the bypass cable 1 (or each of the connection terminals 3 and 4) according to the above embodiment, as shown in FIG. 1, the fixing position of one band 9 and the position where the screw member 10 is screwed are close to each other. However, in the present invention, the fixing position of one band 9 and the position where the screw member 10 is screwed do not have to be close to each other as shown in FIG. The position where the base end of the band 29 is extended in the length direction of the bypass cable 20 is a midway portion of the terminal body 28, and the position where the screw member 30 is screwed is fixed to the band 29. It may be the tip side of the position where it is. That is, the connection terminal 21 is longer than the one terminal body 8 constituting the connection terminal 3 of the bypass cable 1 according to the above embodiment, and the screw hole 28a into which the screw member 30 is screwed is formed. The portion formed on the distal end side of the terminal body 28 and the base end of the band 29 is fixed is located behind the position where the screw hole 28a is formed. Further, in the connection terminal 21 according to this embodiment, the slit 28b in which the tip of the band member 29 is fixed (locked) is formed on the side of the portion where the base end of the band member 29 is fixed. ing. A grip portion 29a made of an insulating material is fixed to the tip of the band 29. When the band 29 is inserted into the slit 28b, the slit 28b and the grip portion 29a are engaged with each other. The structure is fixed.

According to the connecting terminal 21 or the bypass cable 20 the connection terminals 21 are arranged according to this configuration, and the outer diameter of the distal end side of the power source side cable C ₁ and the load side cable C ₆ to be connected, the power source side cable C from conditions such as the gap in the vicinity _{of 1} and the load side cable C ₆ is fixed, even if the band 29 can not be moved to a terminal of the power source side cable C ₁ and the load side cable C _6, As shown in FIG. 6, the tip of the screw member 30 can be securely brought into pressure contact with the crimp terminals T ₁ and T ₆ of the power supply side cable C ₁ and the load side cable C ₆ .

It is a disassembled perspective view which shows the bypass cable which concerns on embodiment of this invention. It is a side view which shows typically the state by which the connection terminal was fixed to the power supply side cable etc. It is a front view which shows typically the state by which the connection terminal was fixed to the power source side cable. It is a front view which shows typically the state by which three bypass cables were connected to each power supply side cable and load side cable. It is a perspective view which shows the one end side of the bypass cable which concerns on other embodiment. It is a side view which shows the state which attached the bypass cable shown in FIG. 5 to the power supply side cable (or load side cable). It is a front view which shows typically the state by which the conventional bypass cable was connected to each power supply side cable and load side cable. It is sectional drawing which shows typically the state by which the terminal of the conventional bypass cable was connected to the power supply side cable.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bypass cable 2 Cable main body 3 One connection member 4 The other connection member 8 One terminal main body 8a One screw hole 8b One slit 9 One band 9a One gripping member 11 The other terminal main body 11a The other screw hole 11b The other slit 12 The other band 12a The other gripping portion 13 The other screw member 20 The bypass cable 21 The connection terminal 28 The terminal body 28a The screw hole 28b The slit 29 The band 29a The gripping portion 30 The screw member W The watt hour meter C ₁ , C ₂ , C ₃ the power source side cable _{C 4,} C 5, _{C 6} load side cable

Claims (4)

A connection terminal arranged at an end of a bypass cable connected to a power supply side cable and a load side cable connected to the instrument,
A terminal body facing the front of the power supply cable or load cable;
The proximal end is fixed to the terminal body, the distal end is a free end, one locking portion is formed at the distal end, and the midway portion is wound around the back side of the power supply side cable or the load side cable. With a band-shaped band,
The other locking portion formed on the terminal body and locked with the one locking portion ;
A screw member that is screwed to the terminal body and is screwed so that the tip is pressed against the terminal of the power supply side cable or the load side cable;
With
Connection terminals, characterized in that fixed to the terminal body by engaging the upper Symbol hand and the other engaging portion with each other.   The connection terminal according to claim 1, wherein the band is formed into a thin plate shape with a conductive material and has flexibility.   The tip of the terminal body is extended in the length direction of the terminal body from the fixing position of the band, and the screw member is arranged on the tip side of the terminal body from the fixing position of the band. The connection terminal according to claim 1 or 2.   A bypass cable comprising the connection terminal according to any one of claims 1 to 3.