JPH0621322U - Cable grip - Google Patents

Abstract

(57) [Abstract] [Purpose] To maintain the gripping force for a long period of time without fear of damaging the cable 2. [Structure] Divided cylindrical gripping bodies 51, 52 each having an uneven surface 5t formed on the inner surface and flange portions 5f formed on both ends.
The elastic members 61 and 62 for pressing the grippers 51 and 52 inward by the elastic repulsive force are interposed between the cable 2 and the brackets 3 and 4.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cable gripping tool for gripping a laid cable and supporting it on a structure or the like.

[0002]

[Prior art]

 FIG. 2 shows a conventional cable gripper. The cable 2 is sandwiched between a bracket pedestal body 4 fixed to a structure or the like and a restraining body 3 via a sandwiched object 50 such as a rubber sheet or linen, and is tightened with a tightening bolt 8. To hold. Japanese Unexamined Patent Publication No. 51-86785 discloses a device for preventing a cable from slipping, which is held by inserting a metal reinforcing member and a wedge-shaped spacer. Further, Japanese Utility Model Application Laid-Open No. Sho 64-39906 discloses a tightening band for tightening a cable or the like by inserting a spacer having a large number of protrusions or projections.

[0003]

[Problems to be solved by the device]

 The conventional cable gripping means is as described above, but in the one shown in FIG. 2, the gripping force becomes weak due to plastic deformation (creep) of the cable 2 and the pinched object 50 due to long-term use. The one disclosed in Japanese Patent Application Laid-Open No. 51-86785 is effective for preventing the cable from sliding downward, but cannot prevent the cable from slipping upward. Further, the one disclosed in Japanese Utility Model Laid-Open No. Sho 64-39906 has a problem that if it is tightened too much, the protrusions may bite into the cable, thereby damaging or adversely affecting the cable.

The present invention has been made in order to solve the above problems, and an object thereof is to obtain a cable gripping tool that maintains gripping force even when used for a long period of time and does not damage the cable. And

[0005]

[Means for Solving the Problems]

 The cable gripping tool according to the present invention is a cable gripping tool that clamps and holds a cable between a pedestal part and a restraining part of a bracket, and an unevenness is formed on the inner peripheral surface of the cable gripping tool. Between the cable and the bracket, there are provided a divided tubular gripping body having flange portions formed on both ends of the bracket, and elastic means for pressing the gripping body inward by elastic repulsive force. It was installed in the.

[0006]

[Action]

 By interposing the gripping body and the elastic pressure means in this invention between the cable and the bracket and tightening the pedestal body and the restraining body of the bracket, the flange portion of the gripping body engages with both end surfaces of the bracket. It is fixed and the elastic force means elastically repels the gripping body inwardly, the convex part of the inner peripheral surface of the gripping body makes contact with the outer surface of the cable by the force, and the boundary line between the convex part and the concave part slips on the cable. Great resistance to movement. Even if the cable is plastically deformed, the elastic repulsive force of the elastic means presses the gripping body inward in accordance with the deformation, so that the cable gripping force is maintained for a long period of time.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 2 is a cable, 3 is a bracket holding body, 4 is a bracket pedestal body, 51 and 52 are gripping bodies, 61 and 62 are leaf springs, and 8 is a fastening bolt. In this cable gripping tool, the cable 2 is sandwiched between the gripping bodies 51 and 52, the leaf springs 61 and 62 are brought into contact with the outside thereof, the bracket pressing body 3 and the bracket pedestal 4 are brought into contact with the outside thereof, and the tightening bolt 8 is attached. The cable 2 is gripped by tightening a nut through the bolt hole 3e of the bracket holding body 3 and the bolt hole 4e of the bracket pedestal body 4, for example. The bracket pedestal 4 is previously attached to a structure or the like (not shown) by means such as mounting bolts (not shown) through the mounting holes 4f and tightening.

The grippers 51 and 52 are made of metal or plastics, and have a semi-cylindrical body portion 5d that is divided into two parts by axial division lines, and flanges that are formed at both ends of the body portion 5d. 5f, and the unevenness 5t is formed on the inner peripheral surface of the body portion 5d. The axial length of the body portion 5d is slightly longer than the axial lengths of the holding portion 3c of the bracket holding body 3 and the receiving portion 4c of the bracket pedestal body 4, and when mounted, it is The flanges 5f are formed so as to be fitted on the outer sides of both ends of the holding portion 3c of the bracket holding body 3 and the receiving portion 4c of the bracket pedestal body 4. The inner diameter of the body portion 5d of the grippers 51, 52 is substantially equal to the outer diameter of the cable 2, and the length in the circumferential direction is slightly shorter than the semicircle. It is formed so that a slight gap remains between the side edge of the body portion 5d of 51 and the side edge of the body portion 5d of the other grip body 52, that is, it can be retightened. The irregularities 5t on the inner peripheral surfaces of the grippers 51, 52 may form a convex portion or may form a concave portion or a hole. Further, the planar shape of the irregularities 5 t may be circular, angular, circumferential stripe, etc., and the irregular cross-sectional shape may be trapezoidal, triangular, etc.

The leaf springs 61 and 62 as elastic means are made of an elastic material such as spring steel and have a length in the vertical (axial) direction shorter than the distance between the flanges 5f of the grippers 51 and 52 and have a cross-sectional shape. Has an arc shape smaller than a semi-circle having a radius of curvature smaller than the radius of curvature of the outer surface of the body 5d of the grippers 51, 52, and an arcuate notch 6k protruding inward is formed in the central portion.

Next, a mounting procedure of the cable gripping tool will be described. In FIG. 1, first, the bracket pedestal 4 is aligned with a laying direction of the cable 2 at a predetermined location such as a structure (not shown) by a means such as fastening through a mounting bolt (not shown) in the mounting hole 4f of the bracket pedestal 4. And attach it. Next, the leaf spring 62 is fitted between the flanges 5f on the outside of the body portion 5d of the grip body 52 so that both the flanges 5f engage with the outsides of both end surfaces of the receiving portion 4c of the bracket pedestal body 4, and the gripping is performed. The body 52 is pressed against the inner surface of the receiving portion 4c of the bracket pedestal body 4. Next, the cable 2 is pressed against the inner surface of the grip body 52, the grip body 51 is pressed against the outer surface of the cable 2 opposite to the grip body 52, and the leaf spring 61 is fitted between the flanges 5f on the outer surface of the grip body 51. The bracket pressing body 3 is pressed from the outside so as to be fitted between both flanges 5f of the grip body 51. Next, the tightening bolt 8 is inserted through the bolt hole 3e of the bracket retainer 3 and the bolt hole 4e of the bracket pedestal 4, and a nut (not shown) is screwed into the tightening bolt 8 to attach the bracket retainer 3 to the bracket. Tighten the base 4.

Next, the operation of this cable gripping tool will be described. As described above, when the bracket restraining body 3 is fastened to the bracket pedestal body 4 by the fastening bolts 8, the fastening force of the fastening bolts 8 causes the gripping bodies 51 and 52 to clamp the cable 2 via the leaf springs 61 and 62. It is applied as a pressing force. Since the concavities and convexities 5t are formed on the inner surfaces of the grippers 51, 52, the convex portion 5t is the convex portion if the irregularities 5t is the convex portion, and the area other than the concave portion 5t is the area if the irregularities 5t is the concave portion or the hole. The cable 2 comes into contact with the outer surface of the cable 2 with an inversely proportional pressure, and the boundary line around the unevenness 5t has a large resistance to the sliding movement of the cable, and the cable 2 is gripped so as not to move with respect to the grippers 51, 52. Further, since the flanges 5f at both ends of the grippers 51 and 52 are fitted onto both ends of the bracket retainer 3 and the bracket pedestal 4, respectively, the grippers 51 and 52 are attached to the bracket retainer 3 and the bracket. It is fixed to the pedestal body 4, and the bracket pressing body 3 and the bracket pedestal body 4 hold the cable 2 so that it cannot be easily moved.

Even if the cable is plastically deformed (creep) due to an external force or temperature change, for example, when the cable is held by the cable gripping tool for a long period of time, the elastic repulsive force of the leaf springs 61 and 62 is not deformed. Since the gripping bodies 51, 52 are pushed and pushed inward following the pressing force, the pressing force is less likely to drop, and the cable gripping force reinforced by the irregularities 5t is maintained for a long period of time.

In the above embodiment, the arcuate notch 6k is formed in the central portion of the leaf springs 61 and 62, but the shape itself of the leaf springs 61 and 62 may exert the elastic repulsion force. Notches having other shapes may be formed at other locations. Further, one of the leaf springs 61 and 62 may be omitted if the required elastic resilience is imparted.

[0014]

[Effect of device]

 As described above, according to the present invention, the cable is grasped so as not to slip easily due to the unevenness of the inner surface of the grasping body, and the pressing force is maintained by the elastic repulsion force of the elastic means even against plastic deformation. Therefore, there is no danger of damaging the cable, and the cable can be held in a good condition for a long time.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a cable gripping tool according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a conventional cable gripper.

[Explanation of symbols]

2: Cable, 3: Bracket holder, 4: Bracket base, 51, 52: Grip, 5f: Flange, 5
t: unevenness, 61, 62: leaf spring, 6k: notch,
8: Tightening bolt.

Claims (1)

[Scope of utility model registration request] 1. A cable gripping tool which clamps and grips a cable between a pedestal part and a restraining part of a bracket, wherein an inner peripheral surface is provided with irregularities and both ends are provided at both ends of the bracket. A divided tubular gripping body formed with a flange portion to be fitted on the outside and elastic means for pressing the gripping body inward by elastic repulsive force are interposed between the cable and the bracket. Cable grasping tool.