JPH07135729A - Cable gripper - Google Patents

Abstract

PURPOSE:To miniaturize the whole shape, and to improve workability by providing a gripping section being divided into two and gripping a cable and a spring member wound on the outer circumferential surface of the gripping section. CONSTITUTION:When a cable is erected to a power terminal and a spring 8 is wound while being held between an upper cleat 4a and a lower cleat 4b, the cable is placed on the lower cleat 4b through a sealing material 2, and the upper cleat 4a is bent by a hinge 6 through the sealing material 2. Since the circumferential area formed by the inner circumferential surfaces of the upper cleat 4a and the lower cleat 4b is slightly smaller than the sectional area of the cable, the cable receives pushing force from the cleats 4a, 4b through the sealing material 2. When the front end of the spring 8 is forwarded along grooves 7 formed in the cleats, projecting sections 8a formed at tail end sections are inserted into the recessed sections 7a of the grooves 7a of the cleats, and the cable is gripped at constant pressure. Accordingly, a gripper is miniaturized, and the efficiency of gripping operation can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable gripping tool for gripping a cable such as a power line laid toward a power supply terminal or the like with a margin and fixing it to a wall.

[0002]

2. Description of the Related Art FIG. 6 is a sectional view showing the structure of a conventional cable gripping tool disclosed in, for example, Japanese Utility Model Laid-Open No. 4-111229. In the figure, 1a and 1b are semicircular cleats for gripping a cable (not shown) on the inner peripheral surface,
A sealing material 2 is attached to the inner peripheral surfaces of the cleats 1a and 1b to protect the surface of the cable to be gripped.

F1 to F4 are flanges extending in the outer peripheral direction from the ends of the cleats 1a and 1b.
Holders HD1 and HD2 for accommodating the springs S1 and S2 are integrally formed with the flanges F1 and F3 on the tops of the springs F1 and F3, respectively, and insertion holes H1 for inserting the tips of the bolts B1 and B2 inserted into the springs S1 and S2. , H2 are formed.

H3 and H4 are through holes formed in the surfaces of the flanges F2 and F4, which face the through holes H1 and H2, and the bolt B inserted through these through holes H3 and H4.
The cleats 1a and 1b, into which the cables are inserted, are tightened by screwing the nuts N onto the screws 1 and B2. A fixing portion S for fixing the cleat 1b to the wall surface is integrally formed with the cleat 1b at the center of the outer peripheral surface of the cleat 1b.

Next, a method of gripping a cable with a conventional cable gripping tool will be described. The purpose of using the cable gripping tool is to lay it on a power supply box or the like without firmly gripping a cable such as a power line and to connect the tip of the cable to a power supply terminal. This is because when the cable is energized, the conductor repeats expansion and contraction due to Joule heat and the like, and the outer circumference of the cable changes. For this reason, if the mechanical force applied to the cable is strong, the bolts or nuts that connect the cleats that compose the gripping tool will be destroyed, and the cable will not slip off the gripping tool and the weight of the cable will be applied to the power supply terminal. is there.

When connecting the cable to the power supply terminal (not shown), first, the cleat 1b is bolted through the fixing portion S to the wall surface corresponding to the laying path of the cable. At this time, the cleat 1a may be temporarily fixed to the cleat 1b with a nut N with a margin. Alternatively, the cleat 1a may be put on the cable after the cable is booted to the power supply terminal.

Here, for example, when the cleat 1a is put on the cable after the cable is raised to the power supply terminal, the laid cable is put through the seal member 2 and the cleat 1b.
Cleat 1 after being placed on the
Cover a cable with a. When the cleat 1a is covered, the springs S1 inserted into the holders HD1 and HD2 integrally formed with the flanges F1 and F2 of the cleat 1a.
Insert the bolts B1 and B2 into S2.

The tips of the bolts B1 and B2 are flanges F1 to F1.
The through holes H1 to H3 of F4 are inserted and the flanges F2 and F4 of the cleat 1b are pulled out. Therefore, each bolt B
Put nuts N on the tips of 1 and B2 and tighten them. At this time, the bolts B1 and B2 press the flanges F1 and F3 against the opposing flanges F2 and F4 through the springs S1 and S2, so that the cleat 1a that abuts on the cable through the seal material 2 has the springs S1 and S2. Press the cable with a margin of power.

[0009]

Since the conventional cable gripping tool is constructed as described above, the shape of the cleat is increased in size in the vertical direction by the amount of the holder that is the spring storage mechanism, and the cleat is mounted at the time of mounting the gripping tool. An extra space must be taken into consideration, and there is a problem in that it interferes with nearby devices depending on the installation location. In addition, the manufacturing process becomes complicated and expensive.

In some cases, if the lower cleat is attached to the wall surface and then the upper cleat is attached from above the cable, the cable will be squeezed while being supported by another person. There was a problem that workability deteriorated.

The present invention has been made to solve the above problems, and an object of the present invention is to obtain a cable gripper having a small overall size and excellent workability.

[0012]

A cable gripper according to the invention of claim 1 comprises a gripping portion which is divided into two and grips a cable, and a strip member wound around the outer peripheral surface of the gripping portion. It is a thing.

The cable gripper according to the invention of claim 2 is
In the cable gripper of claim 1, one end of each of the two gripping parts is engaged with a hinge.

The cable gripper according to the invention of claim 3 is
In the cable gripper according to claim 1, a groove having the width of the strip member is formed along the outer peripheral surface of the grip portion, and the strip member is wound along the groove.

The cable gripper according to the invention of claim 4 is
In the cable gripper of claim 1, at least one locking portion of the rib member is provided on a surface where the inner peripheral surface of the barbed material and the outer peripheral surface of the gripping portion contact each other.

The cable gripper according to the invention of claim 5 is
A gripping portion that is divided into two and grips the cable, a groove having a predetermined width formed along the inner peripheral surface of the gripping portion, and a width that is narrower than the width of the groove and is wound around the outer circumference of the cable. The engaging member is fitted in the groove, and then the two divided gripping portions are screwed together.

[0017]

The cable gripping tool according to the invention of claim 1 is 2
By overlapping the two grips circumferentially around the cable, and then winding the spring member around the circumference of the grip,
The cable gripping work can be performed easily and in a short time.

In the cable gripping tool according to the invention of claim 2, one end of each gripping part is engaged with a hinge and the other end is openable and closable so that the engagement of each gripping part is stable. The strip member can be wound.

According to the third aspect of the invention, the cable gripping tool winds the spring member along the groove provided on the outer peripheral surface of each grip portion, so that the spring member is stably positioned at a predetermined position without being displaced. Can be wound.

In the cable gripping tool according to the invention of claim 4, since the locking portion is provided between the rib member and the outer peripheral surface of the grip portion, the gripping portion is shaken after the winding member is wound to cause a positional deviation. Never.

According to the fifth aspect of the present invention, in the cable gripping tool, the locking member wound around the outer circumference of the cable is aligned with the groove formed along the inner peripheral surface of the gripping portion, and then the gripping portions are engaged with each other for bolting. It is possible to continue gripping the cable with a margin against the vibration of the cable by tightening with and hanging the cable through the groove through the locking portion.

[0022]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an external view showing the configuration of the cable gripper according to this embodiment. FIG. 1A is a front view of the cable gripper according to this embodiment, and FIG. The side view of the cable gripping tool seen from the A direction, the same figure (c) is the top view of the cable gripping tool which saw the same figure (a) from the B direction of an arrow.

In the figure, 4a and 4b are upper cleats and lower cleats, which are semicircular gripping portions constituting a cable gripping tool, and 51F and 53F are upper cleats 4, respectively.
a flange integrally formed at each end of a, 52F, 54F
Is a flange integrally formed at each end of the lower cleat 4b, and 6 is a hinge that engages the upper cleat 51F and the lower cleat 52F.
It is possible to freely engage and release the a and the lower cleat 4b.

Reference numeral 7 indicates a groove having a predetermined width formed along the outer peripheral surfaces of the upper cleat 4a and the lower cleat 4b, and 8 indicates a groove along the groove 7 when the upper cleat 4a and the lower cleat 4b are circumferentially engaged. An annular spring (spring member) to be wound
In addition, a convex portion 8a is formed at each tip of the spring 8 toward the inner peripheral direction. A concave portion 7a for accommodating the convex portion 8a is formed on the surface of the groove 7 with which the convex portion 8a abuts, and the convex portion 8a and the concave portion 7a form a locking portion. Further, the flanges 53F and 54F are formed as necessary, and are not essential constituent elements particularly in the gripping function.

Next, the operation of this embodiment will be described.
When connecting the cable to the power supply terminal, the lower cleat 4 is first attached to the wall surface corresponding to the laying path of the cable via the fixing portion S.
Bolt b. At this time, the upper cleat 4a and the lower cleat 4b may be engaged to wind the spring 8 along the groove 7. Alternatively, the spring 8 may be wound with the cable sandwiched between the upper cleat 4a and the lower cleat 4b after the cable is raised to the power supply terminal.

Here, for example, when the spring 8 is wound with the cable sandwiched between the upper cleat 4a and the lower cleat 4b after the cable is raised to the power supply terminal, the laid cable is attached to the sealing material 2. Through lower cleat 4b
Then, the upper cleat 4a is bent by the hinge 6 toward the lower cleat 4b through the sealing material 2 as well.

At this time, the circumferential area formed by the inner peripheral surfaces of the upper cleat 4a and the lower cleat 4b is the sealing material 2
Since it is slightly smaller than the cross-sectional area of the cable including the thickness of
When attempting to engage the cleats 4a and 4b, the cable receives a pressing force from the cleats 4a and 4b via the seal material 2.

In order to hold the pressing force and hold the cable, the tip of the spring 8 is fed out along the groove 7 formed in the cleat. If it is confirmed that the convex portion 8a formed on the tip end portion of the spring 8 is fitted into the concave portion 7a formed in the groove 7 of the cleat on the side opposite to the feeding side of the spring 8, the spring 8
The convex portion 8a formed at the tail end portion of the is fitted into the concave portion 7a formed in the groove 7 of the cleat on the feeding side of the spring 8.

As a result, the internal pressure generated by the spring 8 is transmitted from the upper cleat 4a and the lower cleat 4b to the cable through the seal member 2 and grips the cable with a constant pressure.
After that, even if the cable is energized and the cable diameter repeatedly changes due to expansion and contraction, the change is absorbed by the spring 8, so that the cable can always obtain a constant gripping force.

Example 2. In the first embodiment, the cable is gripped by the spring force, but the cable may be hung in the groove formed on the inner peripheral surface of the cleat. Figure 2
[Fig. 3] is an external view showing a configuration of a cable gripping tool according to the present embodiment. 7A is a front view of the cable gripping tool, and FIG. 7B is a cross-sectional view of the cable gripping tool shown in FIG.

In the figure, 9a and 9b are upper and lower cleats in the shape of a semi-circle, respectively, which constitute a cable gripping tool, 9F1 and 9F3 are flanges integrally formed at each end of the upper cleat 9a, and 9F2 and 9F4 are lower parts. A flange integrally formed at each end of the cleat 9b, 6 is a hinge that engages the upper cleat 51F and the lower cleat 52F, and the upper cleat 9a and the lower cleat 9b can be freely engaged and released with the hinge 6 as a fulcrum. ing. B is a bolt, and when the upper cleat 9a and the lower cleat 9b are engaged, the flanges 9F2 and 9F4 of the cleats 9a and 9b are engaged.
Through the insertion hole (not shown) of the bolt B and nut N.
Is applied to fix the connection between the cleats 9a and 9b.
Reference numeral 10 is a groove having a predetermined width formed along the inner peripheral surfaces of the upper cleat 9a and the lower cleat 9b.

Next, the operation of this embodiment will be described. As shown in FIG. 3, before the cable C is gripped by the upper cleat 9a and the lower cleat 9b, the adhesive E is applied to the surface of the outer skin D of the gripped portion of the cable C, and the width is slightly smaller than the width of the groove 10. The vinyl sheath piece F, which is a locking member that is narrow and has a thickness slightly larger than the depth of the groove 10, is wound while pressing it with a fingertip.

If the vinyl sheath piece F is completely adhered to the outer cover D, the cable C is aligned so that the vinyl sheath piece F is fitted into the groove 10, and then the upper cleat 9a is attached to the lower cleat. 9b, and the bolt B is inserted through the flanges 9F2 and 9F4 so that the nut N
Then, tighten each flange 9F2, 9F4.

As a result, the cable C can be brought into contact with the inside of the groove 10 with a margin of the thickness of the vinyl heath piece F wound on the outer cover D, so that even if the cable C expands when energized, it is excessive. Pressure on upper and lower cleats 9a, 9b
Never give to. Further, even if the cable C contracts and the inner diameter becomes smaller, the vinyl heath piece F hangs on the edge of the groove 10 so that the cable C is attached to the upper and lower cleats 9a and 9b.
It will not fall further.

Example 3. In the second embodiment, the adhesive material E is applied to the surface of the outer cover D of the cable C, and the vinyl heath piece F is applied.
Although it was wound while adhering, the vinyl heath piece F may be directly welded to the surface of the outer cover D as shown in FIG. In this welding step, as shown in FIG. 5A, the contact surface J between the outer skin D and the vinyl heath piece F is pressed by the hot air of the hot gun G while pressing the vinyl heath piece F of the same kind as the outer skin D against the outer skin D with a fingertip. Heat is applied, and both contact surfaces J are simultaneously melted and welded.

It is desirable that this welding step is divided into two steps for each half circumference of the cable C as shown in FIG. Then, after the first one welding process is completed, each end of the welded vinyl heath piece F is obliquely separated. Then, in the next welding step, the tip of the vinyl heath piece F to be welded is obliquely separated so as to be in parallel contact with the cut surface of the vinyl heath piece F already welded.

When the second welding is completed, the vinyl heather pieces F are contacted in parallel with the cut surface of the already welded vinyl heather pieces F to weld them, and the excess vinyl heather pieces F are cut off, and then each vinyl heather piece is cut off. Mold so that the welding points of F and F become smooth. As a result, the welded portions of the vinyl heath pieces F, F are made smooth, and the contact area is increased to strengthen the welding force.

Example 4. In the above-mentioned Examples 2 and 3, a vinyl heather piece F was attached to the outer skin D of the cable C by some method to form the locking member of the cable C. However, as shown in FIG. The locking member may be formed by applying the self-fusing tape K to the above and assimilating it with the outer cover D, and then winding the protective glass tape L on the self-fusing tape K. As a result, it becomes easy to form the locking member.

[0039]

According to the first aspect of the present invention, a gripping portion that is divided into two and grips a cable and a spring member that is wound around the outer peripheral surface of the gripping portion are provided, and the two gripping portions are connected to the cable. Since the elastic member is wound around the circumference of the grip portion after being circumferentially overlapped, the gripping tool can be downsized and the cable gripping work can be performed easily and in a short time. There is an effect that can be.

According to the second aspect of the present invention, one end of each gripping portion is engaged with a hinge so that the other end can be opened and closed. In addition to the advantages, the cable holding work can be performed easily and in a short time because the stripping member can be wound in a state where the engagement of each holding portion is stable.

According to the invention of claim 3, a groove is formed along the outer peripheral surface of the grip portion for the width of the strip member, and the strip member is wound along this groove. As in the first aspect of the invention, the gripping tool can be downsized, the cable gripping work can be performed easily and in a short time, and the winding member can be stably wound at a predetermined position, so that the winding member can be wound. Has the effect of improving the safety of.

According to the invention of claim 4, at least one or more engaging portions of the rib members are formed on the surface where the inner peripheral surface of the bar material and the outer peripheral surface of the gripping portion contact each other. As in the invention of (1), there is an effect that the gripping tool can be miniaturized and the function as a spring-forming member can be maintained because the gripping portion does not move after the winding-up of the spring-forming member and the displacement does not occur.

According to the invention of claim 5, a gripping portion which is divided into two and grips the cable, a groove having a predetermined width formed along the inner peripheral surface of the gripping portion, and a width narrower than the width of the groove. And a locking member wound around the outer periphery of the cable, and the locking member is fitted into the groove, and then the two divided gripping portions are screwed to each other. There is an effect that it is possible to have a sufficient cable gripping function by having the structure.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an appearance of a cable gripping tool according to an embodiment of the present invention.

FIG. 2 is a configuration diagram showing an appearance of a cable gripping tool according to another embodiment.

FIG. 3 is a diagram illustrating a method of forming a cable locking portion in the present embodiment.

FIG. 4 is a diagram illustrating a method of forming a cable locking portion according to another embodiment.

FIG. 5 is a diagram illustrating a method of forming a cable locking portion according to another embodiment.

FIG. 6 is a configuration diagram showing an appearance of a conventional cable gripping tool.

[Explanation of symbols]

 4a Upper cleat 4b Lower cleat 6 Hinge 7 Groove 7a Recess 8 Spring 8a Convex F Vinyl heath piece K Self-bonding tape L Glass tape

Claims (5)

[Claims] 1. A cable gripping tool comprising a gripping portion that is divided into two and grips a cable, and a strip member that is wound around an outer peripheral surface of the gripping portion. 2. The cable gripper according to claim 1, wherein one end of each of the two divided gripping parts is engaged with a hinge. 3. The cable gripper according to claim 1, wherein a groove having a width of the strip member is formed along an outer peripheral surface of the grip portion, and the strip member is wound along the groove. 4. The cable grip according to claim 1, wherein at least one or more engaging portions of the strip members are provided on a surface where the inner peripheral surface of the strip segment member and the outer peripheral surface of the grip portion come into contact with each other. Ingredient 5. A gripping portion which is divided into two and grips a cable, a groove having a predetermined width formed along an inner peripheral surface of the gripping portion, and a width of the cable which is narrower than the width of the groove. A cable gripping tool having a locking member wound around the outer periphery, and the locking member is fitted into the groove, and then the two divided gripping parts are screwed together.