JP2007060784A - Holding device of braided shield covered wire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a holding device of a shield covered wire that is advantageous in terms of cost by a simple structure since a shield braid is favorably precessed in braiding, is prevented from being damaged since a folded part protects the covered wire, and achieved in soft structure. <P>SOLUTION: The opening end T of a braided shield 13 is folded, the braided shield 13 can favorably be processed in braiding by sandwiching the folded part inside a gripping piece 6, and a different member is not needed for braid processing, thus making the holding device advantageous in terms of cost. Since a folded end folding part 14 covers a ring collar 10, the coated wires 13A, 13B and 13C are prevented from rubbing against the edge of the ring collar 10, and the covered wires 13A, 13B and 13C are protected. Thus there can be achieved the soft structure wherein an ended-form loop ring 9 alleviates and regulates strong fastening forces transmitted to the covered wires 13A, 13B and 13C from the gripping piece 6. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a braided shield covered electric wire in which a covered electric wire is covered with a braided shield, and more particularly to a braided shield covered electric wire holding device for connecting electrical components of a vehicle.

Generally, in a braided shield-covered electric wire, a sheath at the tip is peeled to expose a braided shield made of conductive metal, and a braid that is cut to a predetermined length and then folded back is disposed on the sheath (for example, Patent Document 1 and 2).
In this case, in Patent Document 1, the shield pipe is inserted into the sheath by being pushed in, and the braid is provided between the shield pipe and the sheath. In Patent Document 2, a braid is expanded in a trumpet shape using a wire as an expanding member, and a cap is pressed as a conductive member on the expanded braid and is sandwiched between a wire and a shielded electric wire.

Further, in the braided shielded wire connector, the insertion portion positioned in the main body nut and the cylindrical portion nut is formed in a tapered shape toward the distal end portion of the main body, and is inserted between the braided shield and the sheath (for example, And Patent Document 3). By screwing the cylindrical nut into the main nut in this state, the diameter of the cylindrical portion is reduced and the claw portion is bitten into the sheath so that it can be securely connected to the braided shielded wire connector with a different sheath diameter. Yes.
JP 2002-262429 A JP 2002-343143 A JP 2000-317552 A

Patent Documents 1 and 2 both describe a configuration in which a braid is folded and braided, but a configuration for holding a braided shield and a covered electric wire is not considered.
In Patent Document 3, the emphasis is on the connection between braided shielded wire connectors rather than the configuration of holding a braided shield or a covered wire. For this reason, Patent Document 3 requires a large number of parts such as a male screw part, a conical part, and an insertion part in addition to the main body nut and the cylindrical part nut, and there is a disadvantage that the entire structure is complicated and the cost is high.

  The present invention has been made in consideration of the above circumstances, and its purpose is to provide a simple structure and an advantageous cost because it can satisfactorily braid the opening end of the shield braid when forming the end fold as a braid. Yes, the end fold protects the covered electric wire and does not damage it, and even if a strong tensile force is applied to the shield braid, it can be dispersed well without concentrating the tensile force, and it is easy to insert the covered electric wire into the shield braid. It is providing the holding | maintenance apparatus of the shield covering electric wire which improves.

(Claim 1)
In a braided shield covered electric wire holding device for holding a braided shield covered electric wire, which is formed by weaving fine wires into a sleeve shape and covering the covered electric wire, a pair of gripping pieces having a semicircular arc shape are erected on the substrate The engaging part is formed at the tip part. The engaging piece engages with the engaging portion to reduce the diameter of the holding piece and tightens the covered electric wire and the braided shield inserted into the holding piece. The ring collar is arranged substantially concentrically and close to the grip piece. The end of the braided shield is folded back to the back side of the ring collar, and is sandwiched and fixed inside the grip piece to form an end fold.

Since the braided shield can be satisfactorily braided by folding back the opening end of the braided shield and sandwiching it inside the gripping piece, there is no need for a separate member for braiding, and the structure is simple and cost effective Is advantageous.
Since the folded end fold covers the ring collar, the covered electric wire is not rubbed against the edge portion of the ring collar, and the covered electric wire can be protected without being damaged.

  Since the grip piece portion has a tip opening formed between the grip portion and the engaging portion, the vertical dimension is reduced, and an appropriate degree of freedom is obtained at the mounting position. Nevertheless, since the gripping piece portion is tightened in the direction of diameter reduction by the engagement piece, it can be held without impairing a good tightening force for the covered electric wire.

Even if a strong tensile force is applied to the braided shield, the tensile force can be relaxed in two steps at each position of the ring collar and the gripping piece. Can be protected from.
Since the end fold over the ring collar has a trumpet shape that spreads outward, it is easy to insert the covered electric wire from the end fold into the braided shield, and the workability is greatly improved.

(Claim 2)
The engaging portion of the gripping piece portion forms a bent piece that is bent outward, and the engaging piece is provided with a claw portion that engages with the bent piece. In this case, since the engaging piece can be engaged with the engaging portion of the gripping piece with existing molding members such as a bent piece and a claw portion, a simple structure is sufficient, which is advantageous in terms of cost.

(Claim 3)
An end-shaped loop ring that can be deformed in a reduced diameter with respect to the covered electric wire is provided substantially concentrically in the gripping piece. For this reason, it is possible to realize a flexible structure in which the endless loop ring relaxes and adjusts the strong tightening force transmitted from the gripping piece portion to the covered electric wire.

(Claim 4)
The board is integrally extended from a connector plate on which a storage unit for connecting the covered electric wire is installed. For this reason, there exists the convenience which can connect a braided shield covering electric wire to another braided shield covering electric wire in a storage part.

(Claim 5)
The covered electric wire extends from the storage portion and is connected to the vehicle interior component. In this case, since it is advantageous in terms of cost with a simple structure as described in claim 1, it is suitable as a holding device for braided shield covered electric wires mounted on a vehicle for mass production.

(Claim 6)
The end-shaped loop ring is provided by cutting and raising the arc-shaped portion of the grip piece in the circumferential direction. Since the end-type loop ring is cut and raised, a separate end-type loop ring is not required, which is advantageous in terms of cost and production.

  In the braided shield covered electric wire holding apparatus according to the present invention, the braided shield can be satisfactorily performed by folding back the opening end portion of the braided shield and sandwiching the braided shield inside the gripping piece. It is not necessary, and it has a simple structure and is advantageous in terms of cost. Since the end fold portion folded back on the back side covers the ring collar, the coated electric wire is not rubbed against the edge portion of the ring collar, so that the coated electric wire can be protected without being damaged.

  Based on FIG. 1 thru | or FIG. 3, the braided shield covering electric wire holding | maintenance apparatus 1 which concerns on Example 1 of this invention is demonstrated. In FIG. 1, the substrate 4 extended to the connector plate 2 is made of an elastic body such as a metal plate, and integrally has an angle-shaped gate portion 5 formed by cutting and raising. Immediately before the gate portion 5, a pair of gripping piece portions 6 are formed on the substrate 4 so as to be cut and raised in a semicircular arc shape from the left and right sides so that the diameter can be reduced. The tip portions of the gripping piece 6 facing each other are bent outward and bent with the bent piece 6a as an engaging portion. A flat receiving plate portion 7 provided with a slit-like small hole portion 7 a is formed at the base portion of the gripping piece portion 6 so as to extend forward.

  With respect to the gripping piece portion 6, a diameter-deformable end-shaped loop ring 9 and a ring collar 10 are connected substantially concentrically via a thin piece portion 11 to form a buffer cylinder portion 12. The base portion of the end-shaped loop ring 9 is formed with an extension piece 9b having a hook portion 9a formed at the tip at the front. By arranging the end-shaped loop ring 9 substantially concentrically in the gripping piece portion 6, the hook portion 9a of the extension piece 9b is engaged with the small hole portion 7a of the receiving plate portion 7, and the ring collar 10 is gated. It is located near the rear end of the part 5.

  In this case, one end of the open ends of the end-shaped loop ring 9 forms a projecting piece 9c, and the other end forms a notch recess 9d so as to face the projecting piece 9c. The notched recess 9d guides the projecting piece 9c to the inside along with the diameter-reducing deformation of the end-shaped loop ring 9, so that the end-shaped loop ring 9 is prevented from being distorted in the axial direction. There is no inadvertent displacement.

  The braided shield 13 is formed in a sleeve shape by weaving a large number of fine metal wires in a mesh shape, and is configured to allow a plurality of covered electric wires 13A, 13B, and 13C to be inserted therein. As shown in FIGS. 2 and 3, the braided shield 13 is inserted through the end-shaped loop ring 9 along the extending piece 9b with the predetermined length portion of the tip portion as an opening terminal portion T. The open end portion T is folded back to the ring collar 10 and is sandwiched and fixed between the gripping piece portion 6 and the end-shaped loop ring 9, thereby forming the end fold portion 14 as a braid.

  The rectangular plate-like engagement piece 15 is arranged on the upper part of the grip piece 6 with claw portions 15 a formed at both ends. That is, the engagement piece 15 hooks and engages the claw portion 15a with the bent piece 6a of the grip piece 6 to connect the left and right bent pieces 6a. Along with this, the gripping piece portion 6 is deformed to reduce the diameter and firmly sandwich the end fold portion 14, and the covered electric wires 13 </ b> A, 13 </ b> B, and 13 </ b> C are appropriately tightened via the end-shaped loop ring 9. For this reason, the end-shaped loop ring 9 realizes a flexible structure that suppresses a strong elastic force in the diameter reducing direction received from the gripping piece portion 6 and relaxes the tightening force with respect to the covered electric wires 13A, 13B, and 13C.

  The covered wires 13A, 13B, and 13C have terminals 13a, 13b, and 13c at their rear ends, and are crimped to other covered wires by a storage portion (not shown) provided on the connector plate 2. Thereby, covered electric wire 13A, 13B, 13C can be connected to another covered electric wire, for example, can be connected to an in-vehicle interior part (not shown). The covered electric wires 13A, 13B, and 13C are covered with a flexible insulating tube 17 over almost the entire length in order to ensure electrical insulation and ensure safety.

In the above configuration, the braided shield 13 is braided satisfactorily by folding back the opening end T of the braided shield 13 and sandwiching it between the gripping piece 6, that is, between the gripping piece 6 and the end loop loop 9. Therefore, a separate member for performing the braiding process is not required, and a simple structure is sufficient, which is advantageous in terms of cost.
Since the folded end folded portion 14 covers the ring collar 10, the covered electric wires 13A, 13B, and 13C are not rubbed against the edge portion of the ring collar 10, and the covered electric wires 13A, 13B, and 13C can be protected without being damaged.

  Since the gripping piece portion 6 has a tip opening formed between the left and right bent portions 6a, the vertical height dimension H becomes small as shown in FIG. 1 and FIG. A degree of freedom is obtained. Moreover, since the gripping piece 6 is tightened in the direction of diameter reduction by the engagement piece 15 as indicated by an arrow A in FIG. 1, it is held without impairing the good tightening force for the covered wires 13A, 13B, 13C. Can do.

Even if a strong tensile force is applied to the braided shield 13, the tensile force can be relaxed in two steps at each position of the ring collar 10 and the gripping piece 6, so that the tensile force is not concentrated in one place but is well dispersed. Thus, the braided shield 13 can be protected from damage.
Since the end folding portion 14 covering the ring collar 10 has a trumpet shape that expands outward, it is easy to insert the covered wires 13A, 13B, and 13C from the end folding portion 14 into the braided shield 13, and the workability is greatly improved. To do.

FIG. 4 shows a second embodiment of the present invention. The difference between the second embodiment and the first embodiment is that, as shown in FIGS. 4A and 4B, the ring collar 10 is cut and raised on the substrate 4 and the end loop ring 9 is formed as a grip piece. 6 is formed by cutting and raising along the circumferential direction in the arcuate portion 6. In this case, as shown in FIG. 4C, the end folding portion 14 of the braided shield 13 forms a cut portion 14 a for passing through the base portion 9 </ b> A of the end-shaped loop ring 9.
In the second embodiment, since both the ring collar 10 and the end loop loop 9 are cut and formed, separate members are unnecessary, which is advantageous in terms of cost and production.

(Modification)
(A) In the first embodiment, the end loop ring 9 and the ring collar 10 are connected substantially concentrically through the strip portion 11, but the strip portion 11 may be omitted and separated from each other. Good.
(B) The insulating tube 17 that covers the covered electric wires 13A, 13B, and 13C may be provided as necessary, and may be omitted if unnecessary.
(C) Instead of the projecting piece 9c and the notch recess 9d in the end-shaped loop ring 9, serrated portions are provided at both ends of the open end of the end-shaped loop ring 9, and the saw-tooth portions are connected to each other along with the diameter reduction. May be engaged.

(D) Although the bent piece 6 a is formed on the gripping piece 6 and the claw 15 a is formed on the engaging piece 15, the claw is provided on the gripping piece 6, and the bent piece is provided on the engaging piece 15. You may make it provide.
(E) The thin wire woven into the braided shield 13 may be a copper wire with a diameter set to approximately 0.5 mm, tinned with stainless steel, or made of stainless steel. In short, the braided structure has a shielding effect against electromagnetic waves. I just need it.

  In the braided shield covered electric wire holding device, the braided shield can be satisfactorily braided by folding back the opening end of the braided shield and sandwiching it between the gripping pieces. For this reason, a separate member for braiding is not required, and a simple structure is sufficient, which is advantageous in terms of cost. Since the folded end fold covers the ring collar, the covered electric wire is not rubbed against the edge of the ring collar, and the covered electric wire can be protected without being damaged. With these excellent effects, it is possible to promote the demand for users who want to increase the efficiency of productivity, and it can be widely applied to the machine industry through the distribution of related parts.

(Example 1) which is a disassembled perspective view which shows the holding apparatus of a braided shield covering electric wire. (Example 1) which is an assembly | attachment perspective view which shows the holding apparatus of a braided shield covering electric wire. (Example 1) which is a top view which shows the holding | maintenance apparatus of a braided shield covering electric wire in a partial cross section state. (A) is an exploded perspective view showing a braided shielded wire holding device (Example 2), (b) is an enlarged perspective view (Example 2) of a gripping piece and an end-shaped loop ring, and (c) is a braid. (Example 2) which is an expansion perspective view which shows the end fold part of a shield.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Braided shield covered electric wire holding device 2 Connector plate 4 Substrate 5 Gate portion 6 Holding piece portion 6a Bending piece (engagement portion)
9 Ended Loop Ring 10 Ring Collar 13 Braided Shield 13A Covered Wire 13B Covered Wire 13C Covered Wire 14 End Folded (Braided)
15 Engagement piece 15a Claw part T Opening end part H Height of gripping part

Claims (6)

In a braided shield-covered electric wire holding device for holding a braided shield-covered electric wire in which a braided shield formed by weaving fine wires into a sleeve shape is put on the covered electric wire,
A pair of semicircular arc-shaped gripping pieces standing on the substrate and having an engagement portion at the tip; and
An engagement piece that engages with the engagement portion to reduce the diameter of the gripping piece portion and tightens the covered electric wire inserted into the gripping piece portion and the braided shield,
A ring collar disposed substantially concentrically and in proximity to the gripping piece,
The braided shield covered electric wire holding device is characterized in that an end folded portion is formed by folding an open end portion of the braided shield back to the ring collar and fixing it between the gripping piece portions.   The engaging portion of the gripping piece portion forms a bent piece that is bent outward, and the engaging piece is provided with a claw portion that is hooked and engaged with the bent piece. The braided shield covered electric wire holding device according to claim 1.   2. The braided shield covered electric wire holding device according to claim 1, wherein an end-shaped loop ring that can be deformed in a reduced diameter with respect to the covered electric wire is provided substantially concentrically in the gripping piece portion. .   The braided shield covered electric wire holding device according to claim 1, wherein the substrate is integrally extended from a connector plate on which a storage portion for connecting the covered electric wire is installed.   The braided shield covered electric wire holding device according to claim 4, wherein the covered electric wire extends from the storage portion and is connected to an in-vehicle interior part. The braided shield-covered electric wire holding device according to claim 1, wherein the end-shaped loop ring is provided by cutting and forming an arc-shaped portion of the gripping piece portion in a circumferential direction.

Images