JP5391406B2 - Cable fixing member and cable fixing structure - Google Patents

Description

  The present invention relates to a cable fixing member and a cable fixing structure for fixing a cable to a vehicle body or the like.

  When wiring and laying cables, electric wires, etc. (hereinafter also referred to simply as “cables”), for example, when wiring under the suspension of an automobile (hereinafter referred to as “vehicle springs”), tires and other parts In order to prevent contact with the cable, the middle part of the cable to be wired is held and fixed to the vehicle body side. A metal clamp is generally used as the cable fixing means. The metal clamp sandwiches the outer periphery of the cable with metal parts from both sides, and holds the cable by fixing the metal part sandwiched between the cables to a vehicle body or the like using screws or the like.

  As an example of a conventional metal clamp, in an electric wire holding device for holding an electric wire for supplying electric power to an in-wheel motor built in the wheel of the wheel, a clamp that restricts movement of the electric wire in the axial direction but allows rotation. Has been proposed (see Patent Document 1). In this clamp, a buffer cylinder member fitted on the outer periphery of the electric wire and attached with an adhesive or the like is sandwiched between the clamp main body parts from both sides, and a bearing structure is provided between the buffer cylinder member and the clamp main body part to It has a structure that supports it in a freely rotatable manner. In this clamp, by suppressing the rotation of the electric wire, the bending due to the repeated bending of the electric wire accompanying the vertical movement of the wheel is suppressed.

JP 2007-276738 A

However, in the conventional metal clamp, since the force for gripping and fixing the cable is small, there is a possibility that the cable is disconnected from the design fixing portion and disconnection or the like occurs. In particular, when used under a vehicle spring, the cable bends or vibrates with foreign matter such as mud or snow attached to the cable. Therefore, an excessive tensile force is applied to the cable, and the clamp part that fixes the cable If the fixed gripping force is small, the cable moves and comes into contact with surrounding parts, and the possibility that the cable is damaged and disconnected is increased.
Further, when the cable is clamped with metal parts and clamped, the force for clamping the cable is likely to be uneven, and the positional relationship between the metal clamp and the cable differs from the design value. For this reason, an unexpectedly large force is locally applied to the cable, the cable design layout position is shifted, and as a result, troubles such as disconnection may occur.

  Even in the clamp of the above-mentioned Patent Document 1, since the buffer cylinder member is attached to the outer periphery of the electric wire with an adhesive or the like, it is difficult to securely fix the electric wire when the holding force is small and a large force is applied to the electric wire. Become. Moreover, in the clamp of patent document 1, although rotation (twist) of an electric wire is permitted with a bearing structure, the twist of an electric wire generate | occur | produces in the aspect unforeseen accidentally with a wheel vertical motion, As a result, The surrounding parts may come into contact with the electric wire, or an unexpected distortion may occur in the electric wire, leading to disconnection. Furthermore, in the bearing structure, the number of parts is large and the cost is high, and it is difficult to maintain reliability in terms of quality.

An object of the present invention is to provide a cable fixing member and a cable fixing structure that can firmly hold and fix a cable and have a simple structure.

  According to a first aspect of the present invention, there is provided an intermediate member that is fastened and fastened to a cable, and a pair of brackets that sandwich and hold the one or more cables to which the intermediate member is fastened via the intermediate member A member and one or a plurality of grooves formed on opposite surfaces of the pair of bracket members that sandwich the cable and sandwich the cable via the intermediate member, and the inner surface shape of the groove is added to the cable. It is the cable fixing member which becomes a shape which meshes | engages with the outer surface shape of the said intermediate member fastened and fastened.

  According to a second aspect of the present invention, in the cable fixing member of the first aspect, a convex portion is formed on the inner surface of the groove, and the convex portion is formed by crimping the cable. It meshes with the concave portion of the caulking portion of the member.

  According to a third aspect of the present invention, the cable fixing member according to the first or second aspect includes a fastening member that clamps the pair of bracket members sandwiching one or more of the cables.

  A fourth aspect of the present invention is a cable fixing structure in which a cable having a reinforcing braid on its outer peripheral portion is fixed to a cable mounting fixing member using the cable fixing member according to any one of the first to third aspects.

  According to the present invention, it is possible to provide a cable fixing member and a cable fixing structure that can firmly hold and fix a cable and that has a simple structure and high reliability.

The bracket member in the cable fixing member which concerns on one Embodiment of this invention is shown, (a) is the figure which looked at the bracket member from the opposite side to an opposing surface, (b) saw the bracket member from the opposing surface side. FIG. 4C is a side view showing a state in which a pair of bracket members are in close contact with each other. The intermediate member in the cable fixing member which concerns on one Embodiment of this invention is shown, (a) is a front view of an intermediate member, (b) is a figure which shows the state which the intermediate member was crimped and fastened by the cable. is there. It is a figure which shows one of the procedures which fix a cable using the cable fixing member which concerns on one Embodiment of this invention. It is a figure which shows one of the procedures which fix a cable using the cable fixing member which concerns on one Embodiment of this invention. It is an AA expanded sectional view of FIG. It is BB expanded sectional drawing of FIG. It is a cross-sectional view of the cable used with the cable fixing structure which concerns on one Embodiment of this invention.

  Hereinafter, an embodiment of a cable fixing member and a cable fixing structure according to the present invention will be described.

FIG. 1 shows a bracket member in a cable fixing member according to an embodiment of the present invention. 1A is a view of the bracket member viewed from the side opposite to the facing surface, FIG. 1B is a view of the bracket member viewed from the facing surface side, and FIG. 1C is a pair of bracket members facing the surface. FIG.

  As shown in FIGS. 1A to 1C, the pair of bracket members 1 and 1 of this embodiment are used for gripping three cables and fixing them to a vehicle body or the like. On the opposite surface 4, three rows of grooves 5 are formed to hold the cable. The cross section of the groove 5 corresponds to a cable having a circular cross section (for example, see FIG. 7) and has a semicircular shape in which the outer periphery of the cable is held between a pair of bracket members 1 and 1 from both sides, and three rows The groove 5 is formed in parallel to the width direction of the bracket member 1. FIG. 1C shows a state in which the opposing surfaces 4 and 4 of the pair of bracket members 1 and 1 are in close contact with each other, and a cable (actually the intermediate member 3 ( A gripping hole 6 is formed for receiving and gripping and fixing the cable of the portion (see FIG. 2) that has been fastened and fastened. Further, a convex portion 8 along the circumferential direction of the groove 5 is formed on the inner surface of the groove 5 having a semicircular cross section of the bracket member 1. The convex portions 8 are provided at three locations in the grooves 5 with appropriate intervals in the direction of the grooves 5.

  Both ends of the bracket member 1 in the direction (cable alignment direction) orthogonal to the direction of the groove 5 are attachment portions 14 and 14 for attaching cables to a cable attachment fixing member such as a vehicle body. The mounting portion 14 is tightened in a direction in which the opposing surfaces 4 and 4 of the pair of bracket members 1 and 1 are in close contact with each other, and is used as a tightening member for mounting and fixing the bracket members 1 and 1 to the cable mounting and fixing member 40 such as a vehicle body. Bolts 7 (see FIGS. 4 and 5) are provided. An insertion hole 15 for inserting the bolt 7 is formed in the attachment portion 14. Two insertion holes 15 are provided side by side in the width direction of the bracket members 1, 1 (the direction of the groove 5). The attachment portion 14 is flat and the central portion of the bracket member 1 in which the groove 5 is formed is formed thicker than the attachment portion 14.

FIG. 2 shows an intermediate member in the cable fixing member according to the present embodiment. FIG. 2A shows a front view of the intermediate member, and FIG. 2B shows a state in which the intermediate member is crimped to the cable and fastened.
As shown in FIG. 2A, the intermediate member 3 is a metal cylindrical member that has an insertion hole 12 into which the cable is inserted and is fastened to the cable by being crimped. As shown in FIG. 2B, the intermediate member 3 is fastened to the cable 30 by being crimped using a crimping tool (not shown) after the cable 30 is inserted into the insertion hole 12. The In the present embodiment, annular caulking portions 3 a that are depressed by caulking at three locations of the intermediate member 3 are formed in correspondence with the convex portions 8 formed at three locations of the grooves 5 of the bracket member 1. Yes.

  Next, a procedure for mounting and fixing a cable to the cable mounting and fixing member using the cable fixing member of the present embodiment will be described with reference to FIGS. 5 is an AA enlarged sectional view of FIG. 4, and FIG. 6 is a BB enlarged sectional view of FIG.

  First, as shown in FIG. 3, after attaching the intermediate member 3 to each of the three cables 30 that are collectively held and fixed by the cable fixing member of this embodiment, The intermediate member 3 is crimped using a tightening tool, and the intermediate member 3 is fastened to the cable 30.

  Next, as shown in FIGS. 3 and 4, the intermediate members 3 respectively fastened to the outer periphery of the three cables 30 are sandwiched between the three opposing grooves 5 and 5 of the pair of bracket members 1 and 1 from both sides. Thereafter, the bolts 7 are inserted into the opposing insertion holes 15 and 15 of the bracket members 1 and 1, and the bolts 7 are fastened and fixed to a cable mounting fixing member 40 such as a vehicle body as shown in FIG. As a result, the bracket members 1 and 1 are fixed to the cable mounting and fixing member 40, and the opposing surfaces 4 and 4 of the bracket members 1 and 1 are brought into a close or close state. The cable 30 is held and fixed between the five via the intermediate member 3.

Further, when the intermediate member 3 that is crimped and fastened to the cable 30 is sandwiched and held between the grooves 5 and 5 of the pair of bracket members 1 and 1, as shown in FIG. Meshes with the recessed portion of the annular caulking portion 3a in which the intermediate member 3 is depressed. Therefore, the axial displacement of the cable 30 can be prevented by the meshing structure between the convex portion 8 of the groove 5 and the concave portion of the outer surface of the crimping portion 3a of the intermediate member 3.
In addition, by gripping the intermediate member 3 with the bracket members 1, 1, twisting of the cable (rotation about the axis) is suppressed due to friction of a surface where the groove 5 of the bracket member 1 and the intermediate member 3 are in contact with each other. Further, the caulking portion 3a of the intermediate member 3 is not made to be an annular continuous portion along the circumferential direction as described above. For example, a concave portion by discontinuous caulking is formed in at least a part of the intermediate member 3, and the concave portion If the convex portions of the grooves 5 are configured to engage with each other, it is possible to suppress or prevent the movement accompanying twisting of the cable (rotation about the axis).

  FIG. 7 shows a cross-sectional view of an embodiment of the cable 30 that is held and fixed to a vehicle body or the like. As shown in FIG. 7, the cable 30 has a circular cross-sectional shape, and has a plurality of twisted conductors 31 at the center, and the outer periphery of these conductors 31 is an insulator 32, a shield 33, a reinforcing braid. 34 and sheath 35 are sequentially coated concentrically. The reinforcing braid 34 is a braided fibrous material such as resin or metal. Since the reinforcing braid 34 is provided on the outer peripheral portion of the cable 30, when the intermediate member 3 is swaged, the swaged portion 3 a effectively enters the cable 30, and the intermediate member 3 is firmly fixed to the cable 30. The adverse effect on the cable structure (conductor 31, insulator 32, shield 33) inside the reinforcing braid 34 due to caulking or the like can be suppressed.

  The cable to which the present invention is applied is not limited to the cable 30 of the above-described embodiment shown in FIG. 7, and the cable of the present invention includes an electric wire and the like. Specifically, the cable of the present invention includes a cable having a power line for supplying power, a cable having a signal line for transmitting a signal, a cable having a power line and a signal line, and the like. In addition, the present invention is not limited to a cable for an automobile, and can be suitably used for a cable that is used in an environment that receives severe vibrations. Further, the cable may have a rectangular cross section instead of a circular cross section.

According to the present embodiment, one or a plurality of effects shown below can be obtained.
(1) Since the intermediate member 3 is firmly attached to the cable 30 by caulking, and the cable 30 is sandwiched and held by the bracket members 1 and 1 via the intermediate member 3, the cable 30 can be fixed with sufficient holding force. . In particular, since the convex portion 8 of the groove 5 meshes with the concave portion of the caulking portion 3a of the intermediate member 3, even if an excessive tensile force is applied to the cable 30, the convex portion 8 of the groove 5 and the caulking portion 3a. It can hold | maintain by the meshing structure with the concave-shaped part, and it can prevent that the cable 30 slip | deviates as much as possible. In particular, foreign matter such as mud and snow may adhere to the cable provided under the vehicle spring, and the cable with the foreign matter attached may be bent or vibrate. At this time, an excessive tensile force is generated in the cable. However, even in such a case, the cable can be sufficiently fixed and held.
(2) Since the cable 30 is sandwiched and held by the bracket members 1 and 1 via the intermediate member 3, the holding force of the bracket members 1 and 1 with respect to the cable 30 is made uniform by the intermediate member 3. Even if a large force is applied to the cable 30, an unexpected force is not locally applied to the cable 30 of the cable fixing portion, the cable layout position is not shifted, and it is possible to prevent troubles such as disconnection as a result. Is possible.
(3) Since the intermediate member 3 that is fastened and fastened to the cable 30 is sandwiched between the bracket members 1 and 1 and clamped with the fastening members (bolts 7), the cable 30 is gripped. If the tightening by the 1 and 1 tightening members is loosened, the twist of the cable 30 can be corrected. For this reason, when the cable is attached to the vehicle body or the like, fine adjustments such as correction of the twist of the cable 30 are possible, so that the accuracy of assembling the cable 30 to the vehicle body and the like is improved, and the cable layout as designed can be achieved. .
(4) Since the intermediate member 3 is clamped and fastened to the cable 30 and is sandwiched between the bracket members 1 and 1, and the cable 30 is gripped, the quality is highly reliable. The cables 30 can be fixed together and the cost can be reduced.

(Other embodiments)
In addition, although the bracket member 1 of the said embodiment hold | maintains and fixes the three cables 30, it does not matter even if it is a bracket member which has one or several grooves other than three. However, when a plurality of cables are laid out, it is preferable from the viewpoints of workability, securing of a fixing portion, and the like that the plurality of cables are collectively held and fixed by a plurality of bracket members.
Further, in the bracket member 1 of the above-described embodiment, at least one of the attachment portions 14, 14 may be formed by bending with respect to the central portion of the bracket member 1 having the groove 5 for holding the cable. If the mounting portion is bent, it may be preferable from the viewpoint of installation space and workability when the cable is installed and fixed in a narrow place. In addition, when the attachment portion is bent, in order to improve the strength of the bracket member, it is preferable to provide a rib on the surface opposite to the opposing surface of the bracket member, or to make the attachment portion thick.
Moreover, in the said embodiment, as shown in FIG. 5, although the attachment parts 14 and 14 of the both sides of the bracket member 1 were fastened and fixed to the cable attachment fixing member 40 with the volt | bolt 7, one attachment part 14 is cable attachment fixation. Instead of being fixed to the member 40, the pair of bracket members 1 and 1 may be tightened.

DESCRIPTION OF SYMBOLS 1 Bracket member 3 Intermediate member 3a Caulking part 4 Opposite surface 5 Groove 6 Grip hole 7 Bolt (clamping member)
8 Convex part 14 Attachment part 15 Insertion hole 30 Cable 34 Reinforcement braid 40 Cable attachment fixing member

Claims (4)

An intermediate member fastened to the cable and fastened;
A pair of bracket members that sandwich and grip one or more of the cables to which the intermediate member is fastened via the intermediate member;
One or a plurality of grooves that are formed on opposing surfaces of the pair of bracket members that sandwich the cable, and that sandwich the cable via the intermediate member,
The cable fixing member, wherein an inner surface shape of the groove is a shape that meshes with an outer surface shape of the intermediate member that is crimped and fastened to the cable. The cable fixing member according to claim 1,
A convex portion is formed on the inner surface of the groove, and the convex portion meshes with a concave portion of the crimped portion of the intermediate member formed by crimping the cable. The cable fixing member according to claim 1 or 2,
A cable fixing member comprising a fastening member that clamps one or a plurality of the cables and clamps a pair of the bracket members.   A cable fixing structure, wherein a cable having a reinforcing braid on its outer peripheral portion is fixed to a cable mounting fixing member using the cable fixing member according to claim 1.

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