JPH0670428A - Cable holding and insertion body - Google Patents

Abstract

PURPOSE:To make it simple-structured and to secure a cable holding force even after the lapse of time. CONSTITUTION:This device is constituted of an insertion inner body 6, a rubber- like elastic body, which has a cylindrical inner face in contact with a cable 9 and a conical outer face and which has a cut section 6s which is formed at one place in the circumferential direction and is opened axially in full length and an insertion external body 7, also rubber-like elastic body, which has a conical inner face in contact with the external face of the inner body 6 and a cylindrical outer face in contact with a blacket and has a flange 7f at its edge and has a cut section 7s which is formed on one place in the circumferential direction and is opened axially in full length.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable grip fitting insert body which is fitted between a laid cable and a bracket supporting the cable to prevent damage to the cable and to reliably hold the bracket. Is.

[0002]

2. Description of the Related Art FIG. 4 shows a conventional cable supporting means.
A pinch piece 5 such as linen cloth is wound around the cable 9, and is clamped between the pedestal portion 2 and the restraining portion 3 of the bracket with a fastening screw 4 to be grasped and supported.

[0003]

The conventional cable supporting means is as described above, but there is a problem that the picked object 5 loses its elastic repulsive force over time, the surface pressure is lowered and the gripping force is weakened. there were. For this problem, there is a means for interposing a spring in the bracket tightening screw 4, but the structure becomes complicated. Further, Japanese Utility Model Laid-Open No. 3-124712 discloses a means for maintaining the gripping force by using a wedge, but there is also a problem that the structure is complicated.

The present invention has been made to solve the above problems, and an object thereof is to obtain a cable grip fitting insert body having a simple structure and capable of reliably maintaining a gripping force even with the passage of time. To do.

[0005]

A first cable grip fitting insert according to the present invention has a cylindrical shape in which an inner surface in contact with a cable has a cylindrical surface, and an outer surface has a conical surface having an upper diameter larger than a lower diameter. The inner diameter of the fitting inner body, which is a rubber-like elastic body, in which a cutout portion is formed at one location in the circumferential direction, and the inner surface in contact with the outer surface of the fitting inner body has a diameter larger than that of the lower portion. A rubber-like elastic body that has a large conical surface, the outer surface that contacts the bracket is a cylindrical surface that is a cylindrical surface, a flange is formed at the upper end, and an incision that completely penetrates in the axial direction is formed at one location in the circumferential direction. It is composed of a certain fitting and inserting body.

In the second cable grip fitting insert according to the present invention, the inner surface in contact with the cable is a cylindrical surface, and the outer surface is a cylindrical shape having a conical surface with a small diameter at the center and large diameters at both ends. The fitting inner body, which is a rubber-like elastic body, is formed with a cutout portion that fully penetrates in the axial direction at one location, and the inner surface of the fitting inner body that contacts the outer surface has a small central portion and a small diameter at both ends. A rubber-like elastic body that has a large conical surface, the outer surface that contacts the bracket is a cylindrical surface that forms a cylindrical surface, flanges are formed at both ends, and a cutout part that completely penetrates in the axial direction is formed at one location in the circumferential direction. It is composed of a certain fitting and inserting body.

[0007]

Since the fitting inner body and the fitting outer body of the first cable gripping fitting body in the present invention are rubber-like elastic bodies, it is possible to easily fit the cable on the cable by expanding the incision.
If the flange of the external fitting body is fitted over the upper surface of the bracket to be supported by being fitted to the bracket and the internal fitting body for external fitting to the cable is fitted and supported in the external fitting body, The force is a force that pulls down the fitting inner body due to friction, and the wedge action of the inclined surface between the outer surface of the fitting inner body and the inner surface of the fitting outer body causes the bracket, the fitting outer body, the inner fitting body, and the cable to move. During this period, a large radial surface pressure proportional to the axial force of the cable is generated, and the gripping force is retained.

Since the fitting inner body and the fitting outer body of the second cable gripping fitting body in the present invention are rubber-like elastic bodies, the fitting inner body can be fitted onto the outer fitting body. It is possible to expand the cutout portion and externally fit the fitting insertion body to the cable. If the flanges at both ends of this fitting / inserting body are fitted into and supported by the brackets by straddling both ends of the bracket, the force is applied to the fitting / inserting body due to friction when an axial force acts on the cable. By the wedge action of the inclined surface between the outer surface of the insertion body and the inner surface of the fitting insertion body, the left half if the force in the right direction, the right half if the force in the left direction, the bracket and the fitting insertion body A large radial force proportional to the axial force of the cable is generated between the insertion insertion body and the cable, a large surface pressure is generated, and the gripping force is retained.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment. The first embodiment surely holds the gripping force when a force is applied to the cable from the upper side to the lower side in the drawing. In FIG. 1, reference numeral 6 is an inner fitting body, and 7 is an outer fitting body. The insertable inner body 6 has a cylindrical shape whose upper part is larger than its lower part, the inner surface of which is formed into a cylindrical surface having a diameter substantially the same as the outer diameter of the cable to be applied, and the outer surface of which is a conical surface whose upper part is larger than its lower part. Is formed in. The angle of inclination of this conical surface is preferably about 4 to 8 degrees. In addition, the incision portion 6 that fully penetrates in the axial direction is provided at one position in the circumferential direction of the insertion inner body 6.
s is formed. The width of the cut-out portion 6 s has a gap that remains even when the fitting inner body 6 is compressed and comes into pressure contact with the cable 9, and is elastically deformed to allow the cable 9 to be inserted into the fitting inner body 6.
The dimensions are such that

In FIG. 1, the fit-and-insert outer body 7 has a cylindrical shape having a flange 7f at the upper end, and the inner surface has a diameter substantially equal to that of the conical surface of the outer surface of the fit-and-insert inner body 6 and larger than the diameter of the lower portion. Is formed as a large conical surface, and the outer surface is formed as a cylindrical surface having a diameter substantially the same as or slightly larger than the diameter of the inner surface of the bracket in use. Further, a cutout portion 7s is formed at one location in the circumferential direction of the fitting outer body 7 so as to extend entirely in the axial direction. This incision 7
The width of s has a size such that a gap remains even when the fitting outer body 7 is compressed, and the cable 9 can be easily inserted into the fitting outer body 7 by elastically deforming.

In FIG. 1, a fitting inner body 6 and a fitting outer body 7 are provided.
Is an elastic body made of synthetic rubber or the like such as neoprene rubber, and the material, elastic repulsion force, etc. of the fitting inner body 6 and the fitting outer body 7 may be the same. The cable may be made more flexible than the fitting / excluding body 7 so that the cable 9 is not damaged.

Next, the operation of the first embodiment shown in FIG. 1 will be described. First, the cutout portion 7s of the fitting outer body 7 is elastically deformed so as to be expanded, and the cable 9 is inserted into the fitting outer body 7. Similarly, the cut-in portion 6s is expanded on the cable 9 above it, and the fitting inner body 6 is externally fitted thereto. Since the fitting inner body 6 and the fitting outer body 7 are elastic bodies such as synthetic rubber, and the cutout portions 6s and the cutout portions 7s have appropriate shapes, it is possible to elastically deform and insert the cable 9. is there. The external insertion body 7 is inserted between the pedestal portion 2 and the holding portion 3 of the bracket shown in FIG. 3, the flange 7f is placed on the upper surface of the bracket, and the bracket tightening screw 4 is appropriately tightened to be attached. Next, the fitting inner body 6 is slid on the outer surface of the cable 9 and lowered to be pushed into the fitting outer body 7. The tightening of the bracket tightening screw 4 is adjusted so that the fitting inner body 6 is located slightly above the fitting outer body 7 in the pushed state. It is desirable to slightly tighten the bracket tightening screw 4 after the push-in.

Although the work of supporting the cable 9 on the bracket is completed as described above, when a downward force is applied to the cable 9 due to the weight of the cable 9 or the like, the force is applied from the cable 9 to the outer surface of the cable 9. Inserted body 6 that is pressed
Frictionally transmitted to the insertion / removal body 6 to the insertion / removal body 7 in the same manner.
Is transmitted to the bracket by friction and the flange 7f from the fitting / inserting outer body 7, and the bracket eventually supports the cable 9. At this time, since the outer surface of the fitting inner body 6 and the inner surface of the fitting outer body 7 are in contact with each other at the inclined surface of the conical surface, the outer surface of the fitting inner body 6 and the fitting outer body 7 are caused by the wedge action.
A large radial force is generated between the insertion inner body 6 and the cable 9, and a large radial force is generated between the insertion inner body 6 and the cable 9. It also occurs between them, and a large surface pressure is generated in each of these parts. The magnitude of this radial force is about 10 times the axial force if the angle of inclination of the conical surface is set as described above, and the magnitude of the surface pressure is the axial force of the cable 9. Since it is proportional to, the gripping force is also proportional to it. Further, this does not depend on the time and does not matter even if the cable 9, the fitting inner body 6, and the fitting outer body 7 are deformed, and therefore, the same gripping force is maintained even when used for a long period of time.

Next, a second embodiment shown in FIG. 2 will be described. In the second embodiment, no matter which direction the cable 9 is applied, the gripping force is surely maintained. In FIG. 2, reference numeral 6 is an inner fitting body, and 7 is an outer fitting body. The fitting inner body 6 has a tubular shape, and the inner surface of the fitting inner body 6 is formed into a cylindrical surface having a diameter substantially the same as the outer diameter of the cable to which the cable gripping fitting body is applied. The outer surface is formed into a conical surface having a small diameter at the central portion and a large diameter at both end portions, that is, a shape similar to a drum shape. The inclination angle of this conical surface may be the same as that described above. In addition, a cutout portion 6s is formed at one position in the circumferential direction of the fitting insertion body 6 so as to extend entirely in the axial direction. The width of the cut-out portion 6s is such that a gap remains even when the fitting inner body 6 is compressed and comes into pressure contact with the cable 9, and the cable 9 can be inserted into the fitting inner body 6 by elastically deforming. And

In FIG. 2, the fitting outer body 7 has a cylindrical shape having flanges 7f at both ends, and the inner surface of the fitting outer body 7 is a central portion having substantially the same shape as the conical surface of the outer surface of the fitting inner body 6. Is formed in a conical surface having a small diameter and a large diameter at both ends.
The outer surface of is formed as a cylindrical surface having a diameter substantially the same as or slightly larger than the diameter of the inner surface of the bracket in use. In addition, the incision portion 7 that fully penetrates in the axial direction is provided at one position in the circumferential direction of the fitting / inserting body 7.
s is formed. The width of the cutout portion 7s is set to a dimension such that a gap remains even when the fitting outer body 7 is compressed, and the cable 9 can be inserted into the fitting outer body 7 by elastically deforming.

In FIG. 2, the fitting inner body 6 and the fitting outer body 7 are shown.
Is an elastic body made of synthetic rubber or the like such as neoprene rubber, and the material, elastic repulsion force, etc. of the fitting inner body 6 and the fitting outer body 7 may be the same. The cable may be made more flexible than the fitting / excluding body 7 so that the cable 9 is not damaged.

Next, the operation of the second embodiment shown in FIG. 2 will be described. First, the fitting inner body 6 is compressed, the fitting outer body 7 is expanded, and the fitting outer body 7 is fitted onto the fitting inner body 6 as illustrated. Next, the cutout portion 7s of the fitting and inserting body 7 and the cutout portion 6s of the fitting and inserting body 6 are elastically deformed so as to be expanded, and the cable 9 is inserted into the fitting and inserting body 6. The fitting inner body 6 and the fitting outer body 7 are elastic bodies made of synthetic rubber or the like, and the incision 6s and the incision 7s have appropriate shapes, so that they can be elastically deformed and combined as described above. Is. Next, the fitting outer body 7 in which the fitting inner body 6 is fitted is inserted between the bracket pedestal portion 2 and the bracket holding portion 3 shown in FIG. Install by tightening the bracket tightening screw 4 appropriately.

Although the work of supporting the cable 9 on the bracket is completed as described above, when an axial force acts on the cable 9 for some reason, the force is applied from the cable 9 to the outer surface of the cable 9 under pressure. It is transmitted to the insertion body 6 by friction, similarly transmitted from the insertion insertion body 6 to the insertion insertion body 7, and transmitted from the insertion insertion body 7 to the bracket by friction and the flange 7f. I will support you. At this time, since the outer surface of the fitting inner body 6 and the inner surface of the fitting outer body 7 are in contact with each other at the conical inclined surface, if a rightward force is applied to the cable 9, a wedge of the left half inclined surface is formed. By the action, and by the wedge action of the inclined surface of the right half in the case of the force in the left direction, the cable 9 is interposed between the bracket, the fitting outer body 7, the fitting inner body 6, and the cable 9 as described above. A large radial surface pressure that is proportional to the axial force is generated, and the gripping force is maintained regardless of time or deformation.

[0019]

As described above, according to the present invention, a fitting inner body having a cutout portion at one location and a fitting outer body are combined, and the gripping force is retained by the wedge action of the conical surface. Therefore, there is an effect that the gripping force can be reliably retained with a simple structure.

[Brief description of drawings]

1A and 1B show a cable grip fitting insert according to a first embodiment of the present invention, wherein FIG. 1A is a perspective view of a fitting insert, FIG. 1B is a perspective view of a fitting insert, and FIG. It is a figure.

FIG. 2 is a longitudinal sectional view and FIG. 2B is a lateral sectional view showing a cable grip fitting insert according to a second embodiment of the present invention.

FIG. 3 shows a cable bracket, (A) is a front view,
(B) is a side view.

FIG. 4 is a perspective view showing a conventional cable gripping means.

[Explanation of symbols]

2: Bracket pedestal part, 3: Bracket holding part, 4: Bracket tightening screw, 6: Fitting inner body, 6s: Incision part,
7: Fitting external body, 7s: Incision part, 7f: Flange,
9: Cable.

Claims (2)

[Claims] 1. A cable grip fitting insert for fitting between a cable and a bracket, wherein an inner surface in contact with the cable is a cylindrical surface, and an outer surface is a conical surface having an upper diameter larger than a lower diameter. A tubular insertion body that is a rubber-like elastic body in which a cutout portion is formed at one location in the circumferential direction, the cutout portion being entirely through in the axial direction;
The inner surface that contacts the outer surface of this fitting inner body is a conical surface having a diameter of the upper portion larger than the diameter of the lower portion, and the outer surface that contacts the bracket has a cylindrical shape with a cylindrical surface, and a flange is formed at the upper end, A cable grip fitting insert body, which comprises a fitting external body that is a rubber-like elastic body in which a cutout portion that fully penetrates in the axial direction is formed at one location. 2. A cable holding and inserting body to be inserted between a cable and a bracket, wherein an inner surface in contact with the cable is a cylindrical surface, and an outer surface is a cone having a small central portion and large diameters at both ends. A cylindrical inner surface that is a rubber-like elastic body in which a cutout is formed at one location in the circumferential direction, and the inner surface that is in contact with the outer surface of the inner body is in the central portion. A conical surface with a small diameter and large diameters at both ends, the outer surface in contact with the bracket is a cylindrical surface having a cylindrical surface, and flanges are formed at both ends, and a cutout portion that extends entirely in the axial direction at one location in the circumferential direction. And a fitting outer body that is a rubber-like elastic body in which the cable gripping fitting body is formed.