JPH11136841A - Processing method and construction for extra-length portion of insulated electric wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide processing method and construction for an extra-length portion of a covered conductor, which are capable of easily cutting and processing the extra-length portion of the covered conductor, while it is connected with a load side and of securing a connecting strength equal to the original tensile strength of the conductor. SOLUTION: An extra-length portion of a covered conductor is folded at least double, a conductive state is secured through a metal terminal body 4 near a base end of the double folded portion, and the extra-length portion of the covered conductor is cut with an adequate tool. This construction comprises a housing main body 6 made of an insulating material for attaching a metal terminal body 4 and a lid body 7 made of an insulating material attached by thumbscrews in a freely opening/closing manner to one side edge of the upper surface of the housing main body 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a structure for treating an excess length of an insulated wire suitable for use in processing an extra length of an insulated wire such as a communication ground wire, a security ground wire, and a power line. It is about.

[0002]

2. Description of the Related Art For example, communication equipment and OA equipment are provided with an insulated wire such as a ground wire in consideration of safety, but this wire is generally longer than necessary.
In addition, since a connecting device or the like is attached to both ends of the insulated wire, it is difficult to adjust the length by cutting one end, so that there is a problem that extra length is generated and the foot may be caught in the office. At present, the necessary extra length is wound into a small coil or the like and bundled with appropriate fasteners or the like.

[0003]

As described above, conventionally, the extra length of the covered electric wire has been wound so as not to be in the way and bundled. However, there is a problem that electrical characteristics and safety are impaired because the extra length of the covered electric wire is rolled up small. In addition, the longer the insulated wire is, the higher the direct current resistance is, and the more the winding is, the more the inductance is increased. In the case of a power line, it causes heat generation.

[0004] In particular, when they are wrapped in a small bundle, there is a problem in that the wrapped portion accumulates heat and dissipates heat, resulting in an abnormally high temperature, possibly leading to ignition. In addition, in the case of a ground wire, a lightning surge current is not bypassed by being involved, and a dangerous state is created. Further, dust easily adheres to the bundled portion, and the dust may cause a tracking phenomenon in a power supply unit or the like. For this reason, it is desirable that there is no unnecessary extra length, but in practice, an extra length always occurs.

[0005] Therefore, it is necessary to cut a surplus length portion of the covered electric wire to prepare a covered electric wire of a required length. However, in the current state of the field of processing the extra length of the insulated wire, a suitable terminal treatment tool for easily and surely reconnecting the end of the insulated wire whose extra length has been cut has not been developed. In the case of disconnection, when reconnecting, it is necessary to expose the core wire of the terminal part of the covered electric wire, connect the core wires and then insulate the outer periphery, and this method requires a lot of labor and When a relatively large tensile force is applied to the coated electric wire, there is a problem that the connection portion is separated.

In the processing of the extra length, if the extra length is once cut off and then reconnected, if the covered electric wire is a ground wire, the earth ground is cut off at the time of cutting, so that the stray current In addition, there is a serious problem that communication equipment and OA equipment may malfunction due to a rise in potential and power supply is stopped until reconnection in the case of a power line.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems, so that a surplus length portion of a covered electric wire can be easily cut while maintaining a connection state with a load side. It is another object of the present invention to provide a method and a structure for treating a surplus length of a covered electric wire capable of securing a connection strength equivalent to the original electric wire tensile strength.

[0008]

In order to achieve the above-mentioned object, the structure of the present invention will be described in detail. According to the first aspect of the present invention, the extra length of the insulated wire is folded at least in two parts. After forming a conductive state through the metal terminal body near the base end of the folded portion, the excess length of the coated electric wire is cut off, and the extra length of the coated electric wire is processed without disconnecting the connection state with the load side. A method for treating a surplus portion of a covered electric wire, characterized in that it is made as described above.

The invention according to a second aspect of the present invention is a processing structure for a covered wire excess length portion, which is capable of cutting the excess length portion of the covered wire while maintaining a connection state with the load side,
A housing body made of an insulating material having an opening for inserting a covered electric wire formed at both ends and a non-linear electric wire passage such as a meandering shape communicating with the opening, and one side edge of an upper surface of the housing main body A metal terminal having a lid made of an insulating material having a size capable of covering the upper surface of the housing body and being hinged so as to be freely openable and closable, and a pair of U slits to be inserted into an electric wire passage of the housing body. And a pair of U slits formed by inserting a covered electric wire having an extra length into the electric wire passage of the housing body and forming the extra length of the covered electric wire substantially at the center of the metal terminal body. In the middle position of the above, the extra length of the folded half is projected outside the housing main body from the cutout formed in the housing main body, and then the coated electric wire is connected and conducted by the U slit portion of the metal terminal body, Serial to near the proximal end of the elongated portion of the clamshell was cut at an appropriate tool, a processing structure of the coated wire surplus length portion, characterized by being configured so as to cover the upper surface of the housing body in the lid.

According to a third aspect of the present invention, a pair of retaining lids are hinged so as to be openable and closable at a predetermined interval substantially at the center of the other side of the upper surface of the housing body, and when the retaining lids are closed, the retaining lids are closed. The coated electric wire is moved to the U
3. The processing structure of a covered wire excess length portion according to claim 2, wherein the connection portion between the U-slit portion of the metal terminal body and the covered wire is pressed down from the upper surface while being pushed into the slit portion to conduct electricity.

According to a fourth aspect of the present invention, a projection is provided on the inside of the lid, the projection being capable of holding the covered electric wire in the electric wire passage of the housing body at the time of covering. It is a processing structure of a covered electric wire extra length part.

Further, according to a fifth aspect of the present invention, a locking piece is provided on the non-hinged portion side of the lid so as to be orthogonal to the lid, and the lid is placed on the upper surface of the housing body by the locking piece. 5. The structure for treating an excess length of a covered electric wire according to claim 2, wherein the lock piece prevents the cut end face of the extra length of the covered electric wire from being exposed to the outside.

According to the present invention, the excess length of the covered electric wire can be cut without disconnecting the connection with the load side, so that the earth ground is cut off at the time of cutting as in the conventional case, and stray current and potential rise, etc. Thus, it is possible to solve the problem that malfunctions may occur in communication devices and OA devices, and to solve the problem that power supply is stopped until reconnection when the covered electric wire is a power line. .

Further, according to the processing structure of the present invention, the covered electric wire whose excess length has been treated is held in a non-linear shape, that is, a meandering shape in the electric wire passage in the housing body, so that a large load is applied to the covered electric wire. Even if it is applied, there is no danger that the covered wire will come off from the U-slit part of the metal terminal body, and once it is connected, it can withstand the breaking load of the covered wire. Can be provided.

Further, when a pair of holding lids, each of which has a projection formed on the upper surface of the housing main body and having a projection capable of pushing the coated electric wire into the U-slit portion of the metal terminal body, are hinged, the holding lid can be opened and closed. When the cover is closed, the coated electric wire is pushed into the U-slit portion of the metal terminal body by the protrusion to be in a conductive state, so that the processing device for the extra-long part with extremely good operability is provided.

The processing structure for the extra length of the covered electric wire according to the present invention allows the same grounding to be used for switching other than the extra length treatment, for example, during parallel operation of the load-side devices. In addition, there is an advantage that the old and new wirings can be replaced without disconnecting the connection state. Further, according to the processing apparatus of the present invention, it is of course possible to adopt the same usage as in the related art for reconnecting the terminals of the insulated wire once cut.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a configuration of a processing method and a processing structure of a coated wire excess length according to the present invention. FIG. 1 is a perspective view of a state in which a metal terminal is removed from a housing main body, showing an embodiment of a covered electric wire excess length processing structure according to the present invention, and FIG. 2 has an extra length in an electric wire passage of the housing main body. FIG. 3 is a front view of the housing main body and the lid shown in FIG. 2, and FIG. 4 is a rear view of the housing main body and the lid shown in FIG. 5 is a side view of the housing main body and the lid shown in FIG.

The method for treating the extra length of the coated electric wire according to the present invention is basically to fold at least the extra length portion 2 of the coated electric wire 1 and to interpose the metal terminal body 4 near the base end 3 of the folded portion. After forming a conductive state, the extra length 2 of the covered electric wire 1 is cut with an appropriate tool, and the extra length 2 of the covered electric wire 1 is processed without disconnecting the connection state with the load side. It is made possible.

In order to make the insulated wire 1 excluding the extra length portion 2 conductive through the metal terminal 4, a U-slit 5 is formed in the metal terminal 4, and the U-slit 5 is formed. This can be easily achieved by press-fitting the covered electric wire 1 therein. Here, to fold at least the surplus portion 2 of the covered electric wire 1 means that the vicinity of the base end 3 should be folded in two. Can be tri-fold or more.

As described above, according to the method of the present invention, since the surplus length portion 2 of the insulated wire 1 is not once cut and then reconnected, the connection state with the load side is determined before and after the process. Thus, it is possible to solve the problem that the communication device or the OA device malfunctions.

FIGS. 1 to 5 show an example of a covered wire excess length processing structure suitable for carrying out the excess length processing method of the present invention. In FIG. Reference numeral 7 denotes a housing body made of an insulating material.
Is a lid made of an insulating material which is hinged to one side edge of the upper surface so as to be freely opened and closed.

First, the housing main body 6 has openings 8 for inserting the covered electric wire 1 at both ends in the longitudinal direction, and also has a non-linear electric wire passage 9 communicating with the opening 8. The metal terminal 4 is mounted in the wire passage 9.

As shown in FIG. 1, the metal terminal 4 has a convex portion 10 formed by bending a substantially central portion thereof, and most of the portion except for the convex portion 10 has a straight portion. Therefore, the shape does not necessarily correspond to the non-linear wire passage 9 formed in the housing body 6. Therefore, a place where the wire passage 9 is interrupted by the metal terminal body 4 mounted in the wire passage 9 naturally occurs, but a cutout portion 11 is formed in the place of the metal terminal body 4 so that the covered wire 1 It does not interfere with insertion.

The lid 7 is large enough to cover the upper surface of the housing main body 6, and is hinged to one side edge of the upper surface of the housing main body 6 so as to be openable and closable by utilizing hinge characteristics of a synthetic resin. Then, on the inner side of the lid 7, that is, on the side that covers the upper surface of the housing body 6 at the time of covering,
As shown in FIG. 1, a projecting portion 12 having a shape corresponding to the electric wire passage 9 formed in the housing body 6 is formed.

Next, reference numeral 13 denotes an opening / closing opening at a predetermined interval at the other side edge of the upper surface of the housing body 6, that is, substantially at the center of the side edge opposite to the hinged side edge of the lid 7. A pair of holding lids which are freely hinged, and 14 is a holding projection formed on the holding lid 13. The pressing protrusions 14 are provided two by two on each of the pressing lids 13 with a small interval so as to sandwich the U slit portion 5 formed on the metal terminal body 4. The holding lid 13 is also hinged to the side edge of the housing body 6 by utilizing the hinge characteristic of the synthetic resin similarly to the lid 7.

Reference numeral 15 denotes a lock piece protruding from the non-hinged portion side of the lid 7 so as to be orthogonal to the lid 7 so that the lid 7 can be held on the upper surface of the housing body 6. A cutout 17 is formed at a predetermined position of the lock piece 15 so as to be able to engage with a projection 16 formed on the outer side of the housing body 6.

In the embodiment shown in the drawings, when the cover 7 is put on the upper surface of the housing body 6, it is needless to say that the holding cover 13 is folded inward as an operation before the cover 7 is folded. A concave portion 18 is provided at a predetermined position of the lid 7 to absorb the thickness of the holding lid 13.

In addition, reference numeral 19 in the drawing denotes an insulated wire 1 protruding at a required position in a wire passage 9 formed in the housing body 6.
20 are the fastening ridges to suppress the
9 is a cutout recessed at a predetermined position of a protruding ridge 12 formed inside the lid 7 to absorb the protrusion 9. Reference numeral 21 denotes a cutout formed in the housing main body 6 so as to project the extra length 2 of the folded electric wire 1 out of the housing main body 6.
Reference numeral 22 denotes a locking projection provided on an end surface of the holding projection 14 formed on the holding lid 13. A small hole 23 into which the holding projection 22 fits is formed in the convex portion 10 of the metal terminal body 4. . Reference numeral 24 denotes a spring elastic piece formed on the metal terminal body 4.
The spring elastic piece 24 is pressed against the protruding wall 25 forming the wire passage 9 by press-fitting the covered wire 1 into the wire passage 9 to prevent the metal terminal 4 from rattling in the wire passage 9. Make

In applying the covered electric wire excess length processing structure according to the present invention, first, the lid 7 is opened to release the upper surface of the housing main body 6, and the covered electric wire 1 having the extra length 2 is attached to the housing main body 6. It is inserted into the wire passage 9. At this time, the extra length 2 of the covered electric wire 1 is folded in half at a middle position between a pair of U slits 5 formed substantially at the center of the metal terminal body 4, and the extra length 2 is folded into the housing body 6. Is made to protrude outside of the housing main body 6 from the notch 21 formed in the above. Although the extra length 2 shown in FIG. 2 is drawn short for convenience of the drawing, it is actually longer than this.

Next, a pair of retaining lids 13 hinged to the side edges of the housing main body 6 are bent to cover the upper surface of the housing main body 6, and the locking projections 22 projecting from the end surfaces of the retaining projections 14 are provided. The metal terminal body 4 is engaged in a small hole 23 formed in the convex portion 10. In addition, with this operation, the holding projection 14 projecting from the holding lid 13 presses the covered electric wire 1 downward, and the covered electric wire 1
The core wire is pushed into the slit portion 5, the coating portion is torn, and the inner core wire comes into contact with the metal terminal body 4 to be in a conductive state.
Further, even after the conduction state is obtained, the connection between the U-slit portion 5 of the metal terminal body 4 and the coated electric wire 1 is pressed down from above by the pressing protrusions 14, and a stable state is ensured.

After this operation, the insulated wire 1 folded in two is
Is cut using a suitable tool at the position of line A in FIG. As described above, since the covered electric wire 1 is already electrically connected by the metal terminal body 4 in the vicinity of the base end 3, the cutting process of the extra length portion 2 requires cutting off the connection state with the load side (not shown). It doesn't.

Then, the lid 7 is covered so as to cover the upper surface of the housing body 6, and the notch 17 of the lock piece 15 protruding from the free end side of the lid 7 is projected to the outside of the housing body 6. This is to engage with the formed projection 16. The insulated wire 1 in the housing body 6 is securely held in the meandering wire passage 9, and no load is applied to the U-slit portion 5, which is in a conductive state even when an outward tensile force is applied. , The connection state can be maintained.

Since the covered electric wire 1 in the electric wire passage 9 also passes through the notch 11 formed in the metal terminal 4,
The notch 11 becomes a relatively sharp edge so that the coating of the coated electric wire 1 can bite deeply, and the processing device has a structure that is harder to come off. The cut end surface of the extra length 2 of the covered electric wire 1 is covered with the lock piece 15 and is not exposed to the outside.

[0034]

According to the method and structure for treating an excess length of a covered electric wire according to the present invention, the extra length portion of the covered electric wire can be cut without disconnecting the connection state with the load side. Sometimes the earth ground is cut off, which can solve the problem of malfunctioning communication equipment and OA equipment due to stray current and potential rise, etc., and if the covered electric wire is a power line, until reconnection, The problem that power supply is stopped can be solved.

Further, according to the processing apparatus of the present invention, the coated electric wire whose excess length has been treated is held in a non-linear shape, that is, in a meandering shape in the electric wire passage in the housing main body. Even if the wire acts, there is no danger that the covered wire will come off from the U-slit part of the metal terminal, and once connected, it can withstand the breaking load of the covered wire. When a pair of holding lids projecting from the upper surface of the housing main body and having a projection capable of pushing the coated electric wire into the U-slit portion of the metal terminal body are hinged to open and close, When the holding lid is closed, the covered electric wire is pushed into the U-slit portion of the metal terminal body by the projection, and a conductive state can be obtained. It is.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a metal terminal body is removed from a housing main body, showing one embodiment of a coated electric wire excess length processing apparatus of the present invention.

FIG. 2 is an explanatory diagram viewed from a plane in a state where a covered electric wire having a surplus portion is set in an electric wire passage of a housing main body.

FIG. 3 is a front view of a housing main body and a lid shown in FIG. 2;

FIG. 4 is a rear view of a housing main body and a lid shown in FIG. 2;

FIG. 5 is a side view of a housing main body and a lid shown in FIG. 2;

[Explanation of symbols]

1: Covered electric wire 2: Extra length 3: Base end 4: Metal terminal body 5: U slit part 6: Housing body 7: Lid 8: Insertion opening 9: Wire passage 10: Convex part 11: Notch 12: Projecting portion 13: Holding lid 14: Holding projection 15: Locking piece 16: Projection 17: Notch 18: Depression 19: Tightening ridge 20: Notch 21: Notch 22: Locking projection 23: Small Hole 24: Spring elastic piece 25: Projecting wall

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Koichi Takashima 660 Tsuruma, Machida-shi, Tokyo Inside Terada Electric Works, Ltd. (72) Inventor Shunji Nagaoka 660 Tsuruma, Machida-shi, Tokyo Inside Terada Electric Works, Ltd. (72) Inventor Ikko Ezaki 3-19-2 Nishi-Shinjuku, Shinjuku-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Inventor Yasutaka Imori 3-9-11, Midoricho, Musashino-shi, Tokyo Afti Co., Ltd. (72) Invention Person Yotaro Fence 3--18-14 Takada, Toshima-ku, Tokyo Inside the Hakusan Works, Ltd. (72) Inventor Koji Inagawa 3-18-14 Takada, Toshima-ku, Tokyo Inside the Shirayama Works, Ltd.

Claims (5)

[Claims] 1. A method of cutting a surplus portion of a covered electric wire by folding at least a surplus portion of the covered electric wire through a metal terminal body near a base end of the folded portion, and then cutting the surplus length portion of the covered electric wire. A method of treating an extra length of a covered electric wire, wherein the extra length of the covered electric wire is processed without disconnecting a connection state with a load side. 2. A processing structure for a covered wire extra length portion, wherein the extra length portion of the covered wire can be cut off while maintaining a connection state with a load side, and an insertion opening for inserting the covered wire at both ends. And a housing main body made of an insulating material formed with a non-linear electric wire passage such as a meandering shape communicating with the opening, and a housing main body hinged to one side edge of the upper surface of the housing main body so as to be openable and closable. A cover made of an insulating material having a size capable of covering the upper surface of the housing body, and a metal terminal body formed with a pair of U slits to be inserted into an electric wire passage of the housing body. A covered wire having a surplus portion is inserted into the wire passage, and the surplus portion of the covered wire is folded in half at a middle position between a pair of U slits formed substantially in the center of the metal terminal body, How to fold the extra length After projecting out of the housing main body from the notch formed in the jing main body, the coated electric wire is connected and conducted by the U slit portion of the metal terminal body, and the vicinity of the base end of the surplus length of the folded half is cut with an appropriate tool. And a cover for covering the upper surface of the housing body with the lid. 3. A pair of retaining lids are hinged to be openable and closable at predetermined intervals substantially at the center on the other side edge of the upper surface of the housing body, and when the retaining lids are closed, the retaining projections projecting from the retaining lids. 3. The treatment of the extra length of the covered electric wire according to claim 2, wherein the coated electric wire is pushed into the U-slit portion of the metal terminal body to conduct electricity, and a connecting portion between the U-slit portion of the metal terminal body and the coated electric wire is suppressed from the upper surface. Construction. 4. The extra length of the covered electric wire according to claim 2, wherein a projection is formed inside the cover so that the covered electric wire can be suppressed in the electric wire passage of the housing body at the time of covering. Processing structure. 5. A lock piece is provided on the non-hinged part side of the lid so as to be orthogonal to the lid, so that the lid can hold the lid on the upper surface of the housing body, and 5. The processing structure of a covered wire extra length portion according to claim 2, wherein the cut end surface of the extra length portion of the covered wire wire is prevented from being exposed to the outside by the lock piece.