JP2005190810A - Flat cable - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flat cable capable of facilitating a work to connect it to a connector by simply correcting the deformation of core wires even if the deformation is caused. <P>SOLUTION: Core wires 2 disposed side by side on the same plane are coated with an insulating resin layer 3 to form this flat cable 1. The core wires 2 are exposed at the connection end part of the flat cable 1, and are connected to the connector 5. Cut portions 4 corresponding to the length of the exposed core wires 2 are formed on the insulating resin layer 3 positioned at the connection end part of the flat cable 1. When the exposed core wires 2 are deformed or damaged, after cutting the exposed core wires 2 to an even length at the end part of the insulating resin layer 3, the insulating resin layer 3 is separated from the cut portions 4. Thereby, the core wire 2 exposed outside are properly arranged so as to have the initial spacing when the separated insulating resin layer 3 is pulled outward. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a flat cable in which a plurality of core wires formed of conductors are arranged in parallel on the same plane and these core wires are covered with an insulating resin layer.

  Conventionally, as shown in Patent Document 1, in a flat cable, a plurality of core wires formed of conductors are arranged in parallel on the same plane, and these core wires are covered with an insulating resin layer to form a flat cable. In such a flat cable, the core wire is exposed from the end portion of the insulating resin layer, and the core wire is inserted into the connector to electrically connect the terminal assembled to the connector and the core wire of the flat cable.

JP 2003-7141 A

  In the above-described conventional flat cable, the core wire inserted into the connector is exposed to the outside by separating a predetermined width at the connecting end portion of the flat cable, but the flat cable is functionally free. Since it can be bent, the core wire covered with the insulating resin layer is also formed of a bendable material. For this reason, when the flat cable is inserted and removed from the connector, the core wire exposed from the insulating resin layer is easily bent. In this way, when the core wire is deformed, the position of the connector insertion portion and the core wire will be distorted when connecting to the connector, so the connector connection portion and the flat cable core wire are aligned. In addition, it is necessary to correct the bending and deformation of the deformed core wire, and there is a problem that it is troublesome to correct such a core wire and an efficient connection work cannot be performed.

  The present invention has been made in view of the above problems, and provides a flat cable that can be easily corrected even when the core wire of the flat cable is deformed, and can be easily connected to the connector. The purpose is to do.

  The structure of the flat cable of claim 1 of the present invention is that a plurality of core wires formed of conductors are arranged in parallel on the same plane, a flat cable in which these core wires are covered with an insulating resin layer is formed, and the insulating resin In the structure of a flat cable in which the core wire is exposed from an end portion of the layer and the core wire is connected to a terminal to be assembled with a connector, the insulating resin layer having the predetermined length is connected to the connection end portion of the flat cable near the insulating resin layer. It is characterized in that a cut portion for facilitating separation is provided.

  According to the configuration of claim 1, when connecting the flat cable and the external connector, the core wire exposed from the flat cable is inserted into the connector in which the terminal is assembled. Therefore, it is necessary to align the positions of the core wire and the connecting portion on the connector side. There is. However, the core wire exposed from the flat cable is easily bent when subjected to an external force because a flexible material is used for the function of the flat cable. In particular, when a flat cable is inserted into or removed from a connector due to a connection error or the like, deformation such as bending of the core wire exposed from the flat cable is likely to occur. In this way, when the core wire is deformed or damaged, the core wire exposed to the outside is trimmed at the end of the flat cable, and then the outer insulating resin layer is pulled from the notch formed at the connecting end of the flat cable. To separate. Thereby, the core wire corresponding to the width of the separated insulating resin layer is exposed from the flat cable. At this time, the core wire exposed to the outside is aligned with the initial interval when the insulating resin layer to be separated is pulled. As a result, the distance between the core wires exposed to the outside corresponds to the distance between the connection portions of the connector that connects to the flat cable. Therefore, when connecting the flat cable to the connector, align the core cable of the flat cable with the connector. Becomes easy.

  The flat cable structure according to claim 2 of the present invention is the flat cable structure according to claim 1, wherein the insulating resin layer has a plurality of cut portions for making the insulating resin layer easy to cut off at an arbitrary width. It is provided.

  According to the configuration of the second aspect, the deformation of the core wire can be corrected a plurality of times, and the bending position of the flat cable can be designated using the notch portion as a mark.

  The flat cable structure according to claim 3 of the present invention is characterized in that, in the flat cable structure according to claim 2, the intervals between the cut portions are equal.

  According to the configuration of the third aspect, the existing flat cable is excellent in versatility by being equally spaced so as to have the same width as the length of the externally exposed core wire and the width of the connecting portion of the connector that receives the core wire.

  The flat cable structure according to claim 4 of the present invention is the flat cable structure according to any one of claims 1 to 3, wherein the cut portions are provided on both surfaces of the flat cable. To do.

  According to the invention of claim 4, a thin portion is locally formed in the insulating resin layer by the cut portions provided on both surfaces of the flat cable, and if the outside of the cut portion is pulled, the insulating resin layer can be easily and quickly separated from the cut portion. Is possible.

  The flat cable structure according to claim 5 of the present invention is the flat cable structure according to any one of claims 1 to 3, wherein the cut portion is provided on one side of the flat cable. To do.

  According to the invention of claim 5, a thin portion is locally formed in the insulating resin layer by the cut portion provided on one side of the flat cable, and if the outside of the cut portion is pulled, the insulating resin layer can be easily and quickly separated from the cut portion. Is possible.

  According to the flat cable of claim 1, a plurality of core wires formed of conductors are arranged in parallel on the same plane, a flat cable is formed by covering these core wires with an insulating resin layer, and an end of the insulating resin layer is formed. In the structure of a flat cable in which the core wire is exposed from a portion and the core wire is connected to a terminal to be assembled with a connector, a cut portion for separating the insulating resin layer is provided at a connection end portion of the flat cable. Even when the core wire exposed to the outside is deformed at the time of connection, it is possible to easily and quickly correct the core wire deformation by separating the insulating resin layer formed at the connection end of the flat cable from the cut portion. it can. Therefore, the connection work with the connector can be simplified, and the efficiency of the flat cable connection work can be improved.

  According to the flat cable of claim 2, in the flat cable of claim 1, since the plurality of cut portions are provided in the insulating resin layer with an arbitrary width at equal intervals, the flat cable is inserted and removed from the connector, etc. Even if the core wire exposed to the outside is deformed, the deformation of the core wire can be corrected a plurality of times. In addition, when the flat cable is bent and disposed, it is possible to designate the bending position of the flat cable using the notch as a mark.

  According to the fourth aspect of the present invention, in the flat cable according to any one of the first to third aspects, since the cut portions are provided on both sides of the flat cable, they are provided on both sides of the flat cable. The insulating resin layer can be easily and quickly separated from the cut portion by the thin portion formed by the cut portion.

  According to claim 5 of the present invention, in the flat cable according to any one of claims 1 to 3, the cut portion is provided on one side of the flat cable. The insulating resin layer can be easily and quickly separated from the cut portion by the thin portion formed by the cut portion.

  Hereinafter, an embodiment as the best mode for carrying out the present invention will be described with reference to the accompanying drawings.

  As shown in FIGS. 1 to 10, the flat cable 1 is formed by arranging a plurality of core wires 2 formed of conductors in parallel on the same plane and covering these core wires 2 with an insulating resin layer 3. . At the connection end of the flat cable 1, the core wire 2 is exposed by cutting off the end of the insulating resin layer 3 in order to connect to a connector described later. In the existing flat cable 1, the length L of the core wire 2 exposed from the flat cable 1 is generally 5 mm, and the core wire is separated from the flat cable 1 by cutting the end portion of the insulating resin layer 3 with a width of 5 mm. 2 is exposed. Further, the insulating resin layer 3 of the flat cable 1 is formed with a cut portion 4 for separating the insulating resin layer 3 located at the connection end of the flat cable 1. The shape of the cut portion 4 is shown in FIG. 1 to FIG. 9 as an example of being formed in a V shape. However, a U-shaped cut portion 4A may be formed as shown in FIG. If the outer insulating resin layer 3 is separated from the cut portion 4 when the outer insulating resin layer 3 is pulled from the cut portion 4 by forming a local thin portion in the insulating resin layer 3 by the portion 4 Good. Further, as shown in FIG. 8, the cut portions 4 and 4A can be formed more easily when the insulating resin layer 3 is cut off if they are formed on both surfaces of the flat cable 1, as shown in FIG. 9 and FIG. Even if the cut portions 4 and 4A are formed only in the direction of 1, the insulating resin layer 3 can be separated. Further, the number of the cut portions 4 and 4A is shown in FIGS. 7 to 10 except that one cut portion 4 and 4A is formed only at the connection end portion of the flat cable 1 as shown in FIGS. As described above, the plurality of cut portions 4 and 4A may be formed in the insulating resin layer 3 at equal intervals. In this case, the interval between the notches 4 and 4A corresponds to the length L of the core wire 2 exposed from the flat cable 1. That is, in the present embodiment, the interval between the cut portions 4 and 4A is 5 mm.

  Reference numeral 5 denotes a connector. A connector case 6 made of synthetic resin, a terminal 7 for connecting to a connector (not shown) of an external circuit accommodated in the connector case 6, and the flat cable 1 to the connector case 6 The spacer 8 is made of synthetic resin and is positioned and held.

  A terminal accommodating portion 9 for inserting the terminal 7 is defined in the connector case 6. In this embodiment, the terminal accommodating portion 9 is provided with six terminals 7. 9 is partitioned. The terminal 7 is formed by cutting and raising a locking claw 11 that engages with a locking hole 10 formed in the lower wall of the terminal accommodating portion 9, and the inner end of the terminal 7 is folded back into a substantially U shape. A contact portion 12 to be brought into contact with the core wire 2 of the flat cable 1 is formed. The spacer 8 is inserted into a spacer accommodating portion 15 corresponding to the terminal accommodating portion 9, and a stopper portion 16 for positioning the spacer 8 is formed in the spacer accommodating portion 15, while the spacer 8 has an outer surface on the outer surface. A stepped portion 17 that contacts the stopper portion 16 is formed. further. Locking pieces 18 that are elastically deformable for fixing the spacer 8 are formed on the left and right sides of the connector case 6, and locking protrusions formed on the left and right sides of the spacer 8 in the lock holes 19 formed in the locking piece 18. The spacer 8 is fixed to the connector case 6 by locking 20.

  Next, a procedure for connecting the flat cable 1 in the connector 5 will be described. As shown in FIG. 2, the terminals 7 are respectively inserted into the terminal accommodating portions 9 of the connector case 6, and the engaging claws 11 formed on the terminals 7 are engaged with the engaging holes 10 formed on the lower wall of the terminal accommodating portion 9. Then, after fixing each terminal 7 to the terminal accommodating portion 9, the core wire 2 exposed from the flat cable 1 is inserted into each terminal accommodating portion 9. Thereby, the core wire 2 comes into contact with the contact portion 12 turned back from the inner end of the terminal 7. As described above, when the spacer 8 is inserted into the spacer accommodating portion 15 with the terminal 7 and the core wire 2 of the flat cable 1 in contact with each other, the stopper portion 16 formed in the spacer accommodating portion 15 and the step portion 17 formed in the spacer 8 And the locking projections 20 formed on the left and right sides of the spacer 8 are engaged with the lock holes 19 formed on the lock pieces 18 formed on the left and right sides of the connector case 6 so that the spacer 8 is fixed to the connector case 6. The Thereby, the core wire 2 of the flat cable 1 is press-contacted to the terminal 7, the flat cable 1 is prevented from coming off from the connector 5, and the flat cable 1 and the terminal 7 are electrically connected.

  By the way, when connecting the connector 5 and the flat cable 1, the core wire 2 exposed from the flat cable 1 is inserted into the terminal accommodating portion 9 to which the terminal 7 is assembled. The terminal accommodating portion 9 electrically connects the adjacent terminals 7 to each other. In order to insulate, each of the terminals 7 is partitioned according to the number of terminals 7, and naturally the position of the core wire 2 needs to be matched with the position of each terminal accommodating portion 9. However, since the core wire 2 exposed from the flat cable 1 is made of a flexible material for the function of the flat cable 1, as shown in FIG. In particular, when the flat cable 1 is inserted and removed from the connector 5 due to a connection mistake or the like, deformation such as bending of the core wire 2 exposed from the flat cable 1 is likely to occur. As described above, when the core wire 2 is deformed or when the exposed core wire 2 is damaged, the core wire 2 exposed to the outside is trimmed at the end of the flat cable 1 and then the flat cable 1 as shown in FIG. The outer insulating resin layer 3 is pulled from the cut portion 4 formed at the connecting end of the flat cable 1 to separate the insulating resin layer 3 located at the connecting end of the flat cable 1. Thereby, the core wire 2 corresponding to the width (5 mm) of the separated insulating resin layer 3 is exposed from the flat cable 1. At this time, the core wire 2 exposed to the outside is aligned at the initial interval when the separated insulating resin layer 3 is pulled. Since the distance between the core wires 2 corresponds to the distance between the terminal accommodating portions 9 of the connector 5 connected to the flat cable 1, the core wire 2 and the connector 5 of the flat cable 1 are connected when the flat cable 1 is connected to the connector 5. It becomes easy to align. In addition, by forming the cut portion 4 or the cut portion 4A in the flat cable 1, the work of exposing the core wire 2 is simplified, so the work is also efficient. Further, as shown in FIGS. 7 to 10, when the plurality of cut portions 4 are formed in the insulating resin layer 3 corresponding to the interval of the length L of the core wire 3 exposed to the outside, the core wire 3 is applied a plurality of times. As shown in FIG. 10B, the bending position of the flat cable 1 can be designated using the notch 4A as a mark.

  As is clear from the above embodiments, in this embodiment, even when the flat cable 1 is connected, even if the core wire 2 exposed to the outside is deformed, the insulation located at the connection end of the flat cable 1 is used. By separating the resin layer 3 from the cut portions 4 and 4A, the deformation of the core wire 2 can be corrected easily and quickly. Therefore, the connection work with the connector 5 can be simplified and the connection work of the flat cable 1 can be made more efficient.

  As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to the said Example, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, the structure of the connector 5 is not limited to the embodiment described above, and can be applied to an appropriate type of connector. Moreover, since the length of the core wire is generally 5 mm in the existing flat cable, in this embodiment, the length of the core wire exposed to the outside is set to 5 mm in consideration of versatility. The length of is not limited to this.

It is a perspective view of the flat cable which shows the Example of this invention. It is an exploded perspective view of a flat cable and a connector same as the above. It is sectional drawing which shows the state which connected the flat cable and the connector same as the above. It is a front view which shows the state which connected the flat cable and the connector same as the above. It is a perspective view of the flat cable which shows the state which the core wire deform | transformed same as the above. It is a perspective view of the flat cable which shows the state which cut | disconnected the insulating resin layer same as the above. It is a perspective view of the flat cable which shows the modification which provided multiple cut | notch parts. It is a front view of the flat cable which shows the modification which provided multiple cut | notch parts same as the above. It is a front view of the flat cable which shows the modification which provided the some notch part in the single side | surface. It is a front view of the flat cable which shows the modification which provided the U-shaped cut | notch part, Fig.10 (a) shows the flat flat cable before bending, FIG.10 (b) shows the flat cable after bending. Show.

Explanation of symbols

1 Flat cable 2 Core wire 3 Insulating resin layer 4, 4A Notch

Claims (5)

  A plurality of core wires formed of conductors are arranged in parallel on the same plane, and a flat cable in which these core wires are covered with an insulating resin layer is formed, and the core wires are exposed from an end of the insulating resin layer. A flat cable for connecting a cable to a terminal to be assembled with a connector, wherein a cut portion for facilitating separation of the insulating resin layer of the predetermined length is provided in the vicinity of a connection end of the flat cable.   The flat cable according to claim 1, wherein the insulating resin layer is provided with a plurality of cut portions having an arbitrary width for facilitating separation of the insulating resin layer.   The flat cable according to claim 2, wherein the intervals between the cut portions are equal.   The flat cable according to any one of claims 1 to 3, wherein the cut portions are provided on both surfaces of the flat cable.   The flat cable according to any one of claims 1 to 3, wherein the cut portion is provided on one side of the flat cable.

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