JP6801273B2 - Clamp cover for electric wire - Google Patents

Description

The present invention relates to a clamp cover for electric wires.

High-voltage power lines are attached to retaining clamps when erected on utility poles. This retaining clamp is connected to a strain insulator and is attached to a utility pole via the strain insulator. That is, the high-voltage power line is erected on the utility pole by a retaining clamp and a strain insulator.

This retaining clamp is housed in an insulating clamp cover when used for erection of electric wires. The clamp cover is a pair of covers that are openably and closably connected by a hinge, as shown in, for example, Patent Document 1 and Patent Document 2. When storing the retaining clamp in the clamp cover, the retaining clamp is inserted inside with the clamp cover open, and then the clamp cover is closed to store the retaining clamp inside. Then, the pair of engaging portions provided on the clamp cover are engaged with each other using, for example, an indirect hot-line tool, and the clamp cover is fixed in a closed state. Further, the clamp cover is formed with a hole for introducing the overhead electric wire on the side portion and a hole for leading out the edge side electric wire on the opposite side portion. Further, the clamp cover is also formed with a hole for connecting the retaining clamp to the external tension insulator on the side portion on the same side as the hole for leading out the edge side electric wire. The pair of engaging portions are provided at a plurality of locations, but are also provided between the hole for introducing the electric wire and the hole for connecting the retaining clamp to the tension insulator.

Japanese Patent No. 2946329 Japanese Patent No. 3714738

The engaging part at the lower end of the clamp cover can be easily engaged with an indirect wire tool, but the engagement between the hole for drawing out the edge side wire and the hole for connecting the retaining clamp to the strain insulator. The joint is located close to the strain insulator and the edge side wire. Therefore, when engaging the engaging portion at this position, the strain insulator becomes an obstacle, making it difficult to bring the indirect hot-line tool close to this engaging portion, and the indirect hot-line tool engages. It becomes difficult to match.

In order to solve the above problems, the present invention is different from the facing surface of the clamp cover in the engaging portion between the hole for drawing out the edge side electric wire and the hole for connecting the retaining clamp to the strain insulator. It is an object of the present invention to provide an electric wire clamp cover that facilitates engagement with an indirect live wire tool by bringing an indirect live wire tool closer from the side surface of the clamp cover by providing an extending portion extending in a direction.

In order to solve the above-mentioned problems and achieve the object, the electric wire clamp cover of the present disclosure is an electric wire clamp cover made of an insulator and accommodating a retaining clamp on the inner surface, and is connected by a hinge so as to be openable and closable. When the first cover portion and the second cover portion, the first cover portion and the second cover portion, and the first cover portion and the second cover portion, which are open to face each other and can store the retaining clamp, are closed, the first cover portion and the second cover portion are closed. When the overhead wire introduction opening formed on one side end side of the 1 cover portion and the 2nd cover portion and the 1st cover portion and the 2nd cover portion are closed, the 1st cover portion and the 2nd cover portion are closed. An insulator connection opening formed on the other side end side of the portion, and an edge side electric wire introduction opening formed above the insulator connection opening when the first cover portion and the second cover portion are closed. In an electric wire clamp cover provided with an engaging portion that can be engaged with an indirect live wire tool provided on an opposite edge between the first cover portion and the second cover portion, the edge-side electric wire introduction opening The engaging portion provided between the insulator and the insulator connection opening has an extending portion extending along an angle of 30 degrees or more and 90 degrees or less with respect to the facing surface. In Patent Documents 1 and 2, since the facing surface of the clamp cover and the engaging portion are in the same direction, the indirect live wire tool is inserted into the narrow space between the insulator and the edge side electric wire to engage the insulator, resulting in poor workability. On the other hand, the engaging portion between the edge-side electric wire introduction opening and the insulator connection opening according to the present disclosure has an extending portion. The extending portion extends along an angle of 30 degrees or more and 90 degrees or less with respect to the facing surface. Therefore, in this electric wire clamp cover, the extending portion can be operated with an indirect live wire tool from the side surface of the electric wire clamp cover which is less likely to interfere with the insulator or the edge side electric wire, and the engaging portion can be engaged relatively easily. it can.

In the electric wire clamp cover, the extending portion preferably extends along an angle of 45 degrees or more and 85 degrees or less with respect to the facing surface.

In the electric wire clamp cover, the engaging portion provided between the edge side electric wire introduction opening and the insulator connection opening is convex toward the first cover portion side in a direction orthogonal to the facing surface. It has a portion, and has a concave portion on the side of the second cover portion, and the concave portion and the convex portion have the convex portion in the concave portion when the first cover portion and the second cover portion are closed. It is preferred that they be inserted and engaged with each other.

In the wire clamp cover, the engaging portion provided between the edge side wire introduction opening and the porcelain connection opening projects toward the first cover portion side in a direction orthogonal to the facing surface. It also has an engaging holding portion that is divided, and has an engaging insertion portion extending in a direction along the facing surface on the second cover portion side, and the engaging holding portion and the engaging insertion portion. When the first cover portion and the second cover portion are closed, it is preferable that the engaging insertion portion is sandwiched between the two forks of the engaging sandwiching portion and engaged with each other.

In the electric wire clamp cover, the engaging portion provided between the edge side electric wire introduction opening and the porcelain connection opening has an engaging recess on the first cover portion side, and the second cover. The engaging convex portion as the extending portion is provided on the portion side, and the engaging concave portion and the engaging convex portion are formed on the engaging concave portion when the first cover portion and the second cover portion are closed. It is preferable that the convex portion of the engaging convex portion is inserted into the concave portion and engaged with each other.

The electric wire clamp cover has a spherical split body and a spherical edge side electric wire introduction cylinder portion provided in the first cover portion and the second cover portion, and the split body has the edge side electric wire introduction portion. A spherical shape that forms the engaging portion provided between the opening and the porcelain connection opening, the edge-side electric wire introduction opening, and the connection opening that opens on the opposite side of the edge-side electric wire introduction opening. It is connected to the first cover portion and the second cover portion by having the edge side electric wire introduction cylinder portion and covering the spherical edge side electric wire introduction cylinder portion so as to sandwich it.

According to the present invention, when the retaining clamp is housed in the clamp cover, the clamp is provided in the engaging portion between the hole for drawing out the edge side electric wire and the hole for connecting the retaining clamp to the strain insulator. By providing an extending portion extending in a direction different from the facing surface of the cover, the indirect live wire tool can be brought closer from the side surface of the clamp cover, so that the indirect live wire tool can be easily engaged. ..

FIG. 1 is a diagram showing a state in which an electric wire is erected on a utility pole using a retaining clamp. FIG. 2 is an internal development view of the clamp cover according to the first embodiment. FIG. 3 is a front view of the clamp cover according to the first embodiment. FIG. 4 is a side view of the clamp cover according to the first embodiment. FIG. 5 is an enlarged inner surface development view of the edge side electric wire introduction cylinder portion of the first embodiment. FIG. 6 is a diagram for explaining a method of engaging the engaging convex portion and the engaging concave portion of FIG. 4. FIG. 7 is a side view of the clamp cover according to the second embodiment. FIG. 8 is an enlarged inner surface development view of the electric wire introduction cylinder portion of the second embodiment. FIG. 9 is a side view of the clamp cover according to the third embodiment. FIG. 10 is an enlarged inner surface development view of the electric wire introduction cylinder portion of the third embodiment. FIG. 11A is a diagram for explaining a method of engaging the engaging convex portion and the engaging concave portion of FIG. 9. FIG. 11B is a diagram for explaining a method of engaging the engaging convex portion and the engaging concave portion of FIG. 9. FIG. 12 is an internal development view of the clamp cover according to the fourth embodiment. FIG. 13 is an example of an inner surface development view of the clamp cover according to the comparative example. FIG. 14 is an example of a front view of the clamp cover according to the comparative example. FIG. 15 is an inner surface development view of the clamp cover according to the second embodiment. FIG. 16 is a front view of the clamp cover according to the second embodiment. FIG. 17 is an internal development view of the clamp cover according to the third embodiment. FIG. 18 is a front view of the clamp cover according to the third embodiment. FIG. 19 is a front view of the clamp cover according to the fourth embodiment. FIG. 20 is a front view in which the edge line of the clamp cover according to the fourth embodiment is upward. FIG. 21 is a diagram illustrating a method of engaging the divided body and the main body according to the fourth embodiment.

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the present invention is not limited to this embodiment, and when there are a plurality of embodiments, the present invention also includes a combination of the respective examples.

(First Embodiment)
FIG. 1 is a diagram showing a state in which an electric wire is erected on a utility pole using a retaining clamp. As shown in FIG. 1, the electric wire A is an overhead electric wire, and is clamped by the retaining clamp 1 housed in the clamp cover 10. The retaining clamp 1 is connected to an insulator B, which is a strain insulator. The insulator B is further connected to the structure D provided on the utility pole C. In this way, the electric wire A is erected on the utility pole.

FIG. 2 is an internal development view of the clamp cover according to the first embodiment. FIG. 3 is a front view of the clamp cover according to the first embodiment. FIG. 2 is a front view of the clamp cover 10 according to the first embodiment in an open state, and FIG. 3 is a front view of a state in which the clamp cover 10 is closed. Further, FIGS. 2 and 3 show a state in which the retaining clamp 1 is housed inside the clamp cover 10.

As shown in FIG. 2, the retaining clamp 1 has a main body portion 2, a wedge portion 3, an electric wire fixing portion 4, and an insulator connecting portion 5. The main body 2 is slidably connected to the triangular wedge 3. The main body 2 houses a portion where the coating of the electric wire A is peeled off and an end portion of the wedge portion 3.

In the wedge portion 3, a portion where the coating of the electric wire A is peeled off is housed in the groove. An electric wire fixing portion 4 is attached to the wedge portion 3, and the electric wire A is fixed (clamped) by tightening the portion where the coating of the electric wire A is peeled off at the electric wire fixing portion 4. The insulator connecting portion 5 is a ring-shaped member connected to the main body portion 2. The insulator connecting portion 5 is attached to the insulator shaft Ba of the insulator B by a shaft provided inside the ring. The retaining clamp 1 retains the electric wire A in this way and is connected to the insulator B.

The clamp cover 10 is an insulating cover that covers the retaining clamp 1 configured in this manner and houses the retaining clamp 1 inside. As shown in FIG. 2, the clamp cover 10 has a first main body portion 12A, a second main body portion 12B, and a hinge portion 14. The first main body portion 12A and the second main body portion 12B are a pair of covers that are openably and closably connected via a hinge portion 14. The clamp cover 10 is made of an elastically deformable insulator.

As shown in FIG. 2, the first main body portion 12A includes a first cover portion 20A, a veranda wire introduction cylinder portion 30A, an insulator connection cylinder portion 40A, an overhead wire introduction cylinder portion 50A, and an engaging convex portion 60A. It has two bottom engaging protrusions 70A and a grip 80. The second main body portion 12B includes a second cover portion 20B, a veranda wire introduction cylinder portion 30B, an insulator connection cylinder portion 40B, an overhead wire introduction cylinder portion 50B, an engagement recess 60B, and two bottom engagement recesses 70B. And the grip portion 80.

The first cover portion 20A is a cover in which the facing surface 22A, which is the surface, is opened and the retaining clamp 1 can be accommodated therein. The facing surface 22A has a triangular shape around the opening formed by the upper edge portion 23UA, the lower edge portion 23BA, and the side edge portion 23SA. The second cover portion 20B is a cover in which the facing surface 22B, which is the surface, is opened and the retaining clamp 1 can be accommodated therein. The facing surface 22B has a triangular shape around the opening formed by the upper edge portion 23UB, the lower edge portion 23BB, and the side edge portion 23SB.

The first cover portion 20A and the second cover portion 20B have hinge portions 14 attached to the upper edge portions 23UA and 23UB, and are connected to each other so as to be openable and closable via the hinge portions 14. That is, the first cover portion 20A and the second cover portion 20B form a pair of covers. When the first cover portion 20A and the second cover portion 20B are closed, the facing surfaces 22A and 22B face each other to form the facing surfaces 22, thereby forming an integral cover portion 20. More specifically, when the first cover portion 20A and the second cover portion 20B are closed, the upper edge portion 23UA and the upper edge portion 23UB come into contact with each other, and the lower edge portion 23BA and the lower edge portion 23BB come into contact with each other. Then, the side edge portion 23SA and the side edge portion 23SB come into contact with each other.

The edge side electric wire introduction cylinder portion 30A is provided on the side portion (side end) of the facing surface 22A of the first cover portion 20A. More specifically, the edge side electric wire introduction cylinder portion 30A is provided at the position of the apex of the triangle formed by the upper edge portion 23UA and the side edge portion 23SA. The edge side electric wire introduction cylinder portion 30A has a semi-cylindrical shape. The edge side electric wire introduction cylinder portion 30B is provided on the side portion (side end) of the facing surface 22B of the second cover portion 20B. More specifically, the edge side electric wire introduction cylinder portion 30B is provided at the position of the apex of the triangle formed by the upper edge portion 23UB and the side edge portion 23SB. The edge side electric wire introduction cylinder portion 30B has a semi-cylindrical shape. When the edge side electric wire introduction cylinder portion 30A and the edge side electric wire introduction cylinder portion 30B are closed, they face each other to form a tubular edge side electric wire introduction cylinder portion 30. The edge-side electric wire introduction cylinder portion 30 forms the edge-side electric wire introduction opening 32 shown in FIG. The edge-side electric wire introduction opening 32 is a hole into which the electric wire A can be introduced into the cover portion 20.

The insulator connecting cylinder portion 40A is provided at a side portion (side end) of the facing surface 22A of the first cover portion 20A, here at the apex of a triangle formed by the side edge portion 23SA and the lower edge portion 23BA. In other words, the insulator connecting cylinder portion 40A is a side portion (side end) of the facing surface 22A, and is provided at a position adjacent to the edge side electric wire introducing cylinder portion 30A along the facing surface 22A, and the edge side electric wire introducing cylinder portion 40A is provided. It is provided below the portion 30A, that is, on the lower edge portion 23BA side. The insulator connecting cylinder portion 40A has a semi-cylindrical shape. The insulator connecting cylinder portion 40B is provided at the side portion (side end) of the facing surface 22B of the second cover portion 20B, here at the position of the apex of the triangle formed by the side edge portion 23SB and the lower edge portion 23BB. In other words, the insulator connecting cylinder portion 40B is a side portion (side end) of the facing surface 22B, and is provided adjacent to the edge side electric wire introducing cylinder portion 30B along the facing surface 22B, and is provided along the facing surface 22B. It is provided below 30B, that is, on the lower edge portion 23BB side. The insulator connecting cylinder portion 40B has a semi-cylindrical shape.

The insulator connecting cylinder portion 40A and the insulator connecting cylinder portion 40B form a tubular insulator connecting cylinder portion 40 so as to face each other when closed. The insulator connecting cylinder 40 forms the insulator connecting opening 42 shown in FIG. The insulator connection opening 42 is a hole for connecting the insulator B on the outside of the clamp cover 10 to the retaining clamp 1 on the inside. An insulator shaft Ba is introduced into the insulator connection opening 42, and the insulator shaft Ba and the insulator connecting portion 5 are connected inside the insulator connecting cylinder portion 40. When the insulator B is connected to the retaining clamp 1, the insulator B is located outside the clamp cover 10 and covers the insulator connecting cylinder portion 40.

The overhead power line introduction cylinder portion 50A is provided on the side portion (side end) of the facing surface 22A of the first cover portion 20A, which is opposite to the edge side wire introduction cylinder portion 30A. More specifically, the overhead power line introduction cylinder portion 50A is provided at the position of the apex of the triangle formed by the upper edge portion 23UA and the lower edge portion 23BA. The overhead wire introduction cylinder portion 50A has a semi-cylindrical shape. The overhead wire introduction cylinder portion 50B is provided on the side portion (side end) of the facing surface 22B of the second cover portion 20B on the side opposite to the edge side wire introduction cylinder portion 30B. More specifically, the overhead power line introduction cylinder portion 50B is provided at the position of the apex of the triangle formed by the upper edge portion 23UB and the lower edge portion 23BB. The overhead wire introduction cylinder portion 50B has a semi-cylindrical shape. When the overhead wire introduction cylinder portion 50A and the overhead wire introduction cylinder portion 50B are closed, they face each other to form a tubular overhead wire introduction cylinder portion 50. The overhead wire introduction cylinder portion 50 forms the overhead wire introduction opening 52 shown in FIG. The overhead wire introduction opening 52 is a hole through which the wire A can be introduced from the inside to the outside of the cover portion 20.

In other words, the overhead wire introduction opening 52 is an opening formed on one side end side of the first cover portion 20A and the second cover portion 20B when the first cover portion 20A and the second cover portion 20B are closed. It can be said that. Further, the insulator connection opening 42 is an opening formed on the other side end side of the first cover portion 20A and the second cover portion 20B when the first cover portion 20A and the second cover portion 20B are closed. It can be said. Further, the edge side electric wire introduction opening 32 is on the other side end side of the first cover portion 20A and the second cover portion 20B when the first cover portion 20A and the second cover portion 20B are closed, and is connected to the insulator. It can be said that the opening is formed above the opening 42. Further, the edge side electric wire introduction opening 32 is an opening provided diagonally above the first cover portion 20A and the second cover portion 20B when the first cover portion 20A and the second cover portion 20B are closed. It can be said that there is.

The engaging convex portion 60A is provided on the outer periphery of the edge side electric wire introduction cylinder portion 30A on the insulator connecting cylinder portion 40A side. In other words, the engaging convex portion 60A is provided on the side edge portion 23SA between the edge side electric wire introduction opening 32 (edge side electric wire introduction cylinder portion 30A) and the insulator connection opening 42 (insulator connection cylinder portion 40A). The engaging recess 60B is provided on the outer periphery of the edge side electric wire introduction cylinder portion 30B on the insulator connection cylinder portion 40B side. In other words, the engaging recess 60B is provided in the side edge portion 23SB between the edge side electric wire introduction opening 32 (edge side electric wire introduction cylinder portion 30B) and the insulator connection opening 42 (insulator connection cylinder portion 40B). It can be said that the engaging convex portion 60A is an engaging portion 60 provided between the edge side electric wire introduction opening 32 and the insulator connection opening 42. Similarly, the engaging recess 60A can be said to be an engaging portion 60 provided between the edge side electric wire introduction opening 32 and the insulator connection opening 42. In other words, it can be said that the engaging portion 60 has the engaging convex portion 60A on the first cover portion 20A side and the engaging concave portion 60B on the second cover portion 20B side. The shapes of the engaging convex portion 60A and the engaging concave portion 60B will be described later.

The bottom engaging convex portion 70A is provided on the lower portion of the facing surface 22A of the first cover portion 20A, that is, the lower edge portion 23BA. One of the bottom engaging convex portions 70A is provided on the outer peripheral portion of the insulator connecting cylinder portion 40A, and the other one is provided on the outer peripheral portion of the overhead wire introduction cylinder portion 50A. The bottom engaging convex portion 70A is a plate-shaped member on which the convex portion is formed. The bottom engaging recess 70B is provided in the lower portion of the facing surface 22B of the second cover portion 20B, that is, in the lower edge portion 23BB. One of the bottom engaging recesses 70B is provided on the outer peripheral portion of the insulator connecting cylinder portion 40B, and the other one is provided on the outer peripheral portion of the overhead wire introduction cylinder portion 50B. The bottom engaging recess 70B is a plate-shaped member in which a recess (hole) is formed.

The bottom engaging protrusion 70A and the bottom engaging recess 70B face each other when the clamp cover 10 is closed to form the bottom engaging portion 70. The operator uses a tool such as an indirect live-line tool to engage the convex portion of the bottom engaging convex portion 70A with the concave portion of the bottom engaging concave portion 70B, so that the first cover portion 20A and the second cover portion 20B are engaged. And fix in the closed state.

The grip portion 80A is a plate-shaped member provided on the lower portion of the facing surface 22A of the first cover portion 20A, that is, the lower edge portion 23BA. The grip portion 80B is a plate-shaped member provided on the lower portion of the facing surface 22B of the second cover portion 20B, that is, the lower edge portion 23BB. When opening and closing the lamp cover 10, the operator grips the grip portion 80A or the grip portion 80B with a tool and moves the first main body portion 12A or the second main body portion 12B.

Next, the shapes of the engaging convex portion 60A and the engaging concave portion 60B will be described. FIG. 4 is a side view of the clamp cover according to the first embodiment. FIG. 5 is an enlarged inner surface development of the edge side electric wire introduction cylinder portion of the first embodiment. The left side of FIG. 4 is a view of the clamp cover 10 in the open state, and the right side is a view of the clamp cover 10 in the closed state. FIG. 5 is a front view of the edge side electric wire introduction cylinder portion 30, in other words, a view of the edge side electric wire introduction cylinder portion 30, the engaging convex portion 60A, and the engaging concave portion 60B from the arrow K in FIG. Is. The left side of FIG. 5 is a view in an open state, and the right side is a view in a closed state.

As shown in FIGS. 4 and 5, the engaging convex portion 60A has a plate portion 62A and a convex portion 64A. The plate portion 62A is a plate-shaped member. As shown in FIG. 5, in the plate portion 62A, the connecting portion 62A1 at the end is connected to the edge side electric wire introduction cylinder portion 30A, and extends from the connecting portion 62A1 to the tip portion 62A2. The plate portion 62A extends from the connecting portion 62A1 toward the tip portion 62A2 along the direction Y1. The direction Y1 is a direction along a surface parallel to the facing surface 22A of the first cover portion 20A, and more specifically, a hinge portion 14 of the edge side electric wire introduction opening 32 along the surface parallel to the facing surface 22A. The direction is from the outer periphery of the side toward the central axis of the edge side electric wire introduction opening 32. That is, the surface of the plate portion 62A is along a surface parallel to the facing surface 22A. Further, as shown in FIG. 5, the convex portion 64A is a protrusion provided on the surface of the plate portion 62A.

As shown in FIGS. 4 and 5, the engaging recess 60B has a plate portion 62B and a recess 64B. The plate portion 62B is a plate-shaped member. As shown in FIG. 5, in the plate portion 62B, the connecting portion 62B1 at the end is connected to the edge side electric wire introduction cylinder portion 30B, and extends from the connecting portion 62B1 to the tip portion 62B2. The plate portion 62B extends from the connecting portion 62B1 toward the tip portion 62B2 along the direction Y2. The direction Y2 is a direction along a surface parallel to the facing surface 22B of the second cover portion 20B, and more specifically, a hinge portion 14 of the edge side electric wire introduction opening 32 along the surface parallel to the facing surface 22B. The direction is from the outer periphery of the side toward the central axis of the edge side electric wire introduction opening 32. That is, the surface of the plate portion 62B is along a surface parallel to the facing surface 22B. Further, as shown in FIG. 5, the recess 64B is a hole that opens on the surface of the plate portion 62A and penetrates the plate portion 62A.

An extending portion 66 is provided in the engaging recess 60B. The base end portion 67 at the end of the extending portion 66 is fixed to the tip end portion 62B2 of the engaging recess 60B, and extends from the base end portion 67 to the tip end portion 68. The extending portion 66 extends from the base end portion 67 toward the tip end portion 68 along the direction X1 (extending direction). The direction X1 is a direction away from the plane overlapping the facing surface 22B of the second cover portion 20B. That is, the extending portion 66 moves away from the surface overlapping the facing surface 22B toward the tip portion 68. In the present embodiment, the angle θ1 between the direction X1 and the facing surface 22B is 30 degrees or more and 90 degrees or less, and more preferably 45 degrees or more and 85 degrees or less. That is, the extending portion 66 extends toward the tip portion 68 along an angle of 30 degrees or more and 90 degrees or less with respect to the facing surface 22B, and has an angle of 45 degrees or more and 85 degrees or less with respect to the facing surface 22B. It is more preferable to extend along. Further, the distance L1 between the plane overlapping the facing surface 22B and the tip portion 68 is, for example, 1 cm or more and 2.5 cm or less. Further, the straight line along the direction X1 (extending direction) is preferably at a twisted position with respect to the central axis AX1 of the insulator connection opening 42 formed by the insulator connection cylinder 40. The twisted position refers to the positional relationship between the two straight lines when the two straight lines are not parallel and do not intersect. However, the direction X1 is arbitrary as long as it is a direction away from the plane overlapping the facing surface 22B of the second cover portion 20B.

As shown in FIG. 5, when the clamp cover 10 is closed, the inner surface 63A of the plate portion 62A and the outer surface 63B of the plate portion 62B face each other. Further, the extending portion 66 extends in the direction X1 toward the tip portion 68. The operator grips the extending portion 66 with a tool and moves the extending portion 66 toward the plate portion 62A to insert (engage) the convex portion 64A into the concave portion 64B. As a result, the engaging convex portion 60A and the engaging concave portion 60B are engaged with each other to form the engaging portion 60. In this case, the surface 63A and the surface 63B are in close contact with each other to form the close contact surface 63. The contact surface 63 is a surface parallel to the facing surface 22. In other words, the engaging convex portion 60A and the engaging concave portion 60B are brought into close contact with each other on the close contact surface 63 parallel to the facing surface 22 when the clamp cover 10 is closed and engaged. In the clamp cover 10, the convex portion 64A may be provided in the engaging concave portion 60B, and the concave portion 64B may be provided in the engaging convex portion 60A. Further, the engaging convex portion 60A and the engaging concave portion 60B do not have to be engaged with each other as long as they are engaged with each other.

Next, a method of accommodating the retaining clamp 1 attached to the electric wire A at a high place in the clamp cover 10 will be described. When storing the retaining clamp 1 in the clamp cover 10, the operator first grasps the clamp cover 10 in an open state with a tool such as an indirect live wire tool, and holds the clamp cover 10 on the electric wire A at a high place. It covers the retaining clamp 1 attached to. After that, the operator sandwiches the bottom engaging convex portion 70A and the bottom engaging concave portion 70B with a tool, engages the convex portion of the bottom engaging concave portion 70B with the hole of the bottom engaging convex portion 70A, and causes the bottom engaging convex portion 70B. The portion 70A and the bottom engaging recess 70B are engaged. After that, the operator grips the first cover portion 20A with one tool to prevent it from moving, grips the extending portion 66 with the other tool, and holds the extending portion 66 on the first cover portion 20A side. The convex portion 64A is engaged with the concave portion 64B, and the engaging convex portion 60A and the engaging concave portion 60B are engaged with each other.

Here, the bottom engaging convex portion 70A and the bottom engaging concave portion 70B are located on the lower side in the vertical direction of the retaining clamp 1 attached to the electric wire A. That is, the bottom engaging convex portion 70A and the bottom engaging concave portion 70B have no obstacles on the lower side in the vertical direction. Therefore, the operator can bring the tool closer from below to sandwich the bottom engaging convex portion 70A and the bottom engaging concave portion 70B.

FIG. 6 is a diagram for explaining a method of engaging the engaging convex portion and the engaging concave portion of FIG. 4. On the other hand, as shown in FIG. 6, the engaging convex portion 60A and the engaging concave portion 60B are adjacent to the insulator connecting cylinder portion 40 (insulator connecting opening 42) along the facing surfaces 22A and 22B. In other words, the insulator connection cylinder portion 40 (insulator connection opening 42) is located below the engaging convex portion 60A and the engaging concave portion 60B in the vertical direction. As described above, the insulator B is located outside the clamp cover 10 and covers the insulator connecting cylinder portion 40. Therefore, the insulator B exists on the lower side in the vertical direction between the engaging convex portion 60A and the engaging concave portion 60B.

As shown in FIG. 6, the operator may bring the indirect live wire tool E closer from the direction S1 which is the direction from the lower side in the vertical direction in order to engage the engaging convex portion 60A and the engaging concave portion 60B. , The porcelain B becomes an obstacle, and the indirect live wire tool E cannot be brought close to the engaging convex portion 60A and the engaging concave portion 60B. However, in the first embodiment, when the clamp cover 10 is closed, the extending portion 66 extends toward the tip portion 68 along an angle of 30 degrees or more and 90 degrees or less with respect to the facing surface 22. (Keep away from the surface overlapping the facing surface 22). Therefore, the operator can bring the indirect hot-line tool E closer to the extending portion 66 from the lateral direction S2 between the engaging convex portion 60A and the engaging concave portion 60B. Since the direction S2 is the lateral direction, the insulator B does not become an obstacle. Therefore, the operator can easily grip the extending portion 66. The extending portion 66 is attached to the engaging recess 60B. Therefore, the operator can easily engage the engaging concave portion 60B with the engaging convex portion 60A by grasping and moving the extending portion 66.

As described above, the clamp cover 10 according to the first embodiment is an electric wire clamp cover made of an insulator, attached to a structure via an insulator B, and accommodating a retaining clamp 1 for retaining the electric wire A. is there. The clamp cover 10 has a first cover portion 20A and a second cover portion 20B, an overhead electric wire introduction opening 52, an insulator connection opening 42, an edge side electric wire introduction opening 32, and an engaging portion 60. The first cover portion 20A and the second cover portion 20B are openably and closably connected by the hinge portion 14, and the facing surfaces 22A and 22B facing each other are open so that the retaining clamp 1 can be stored inside. The overhead wire introduction opening 52 is formed on one side end side of the first cover portion 20A and the second cover portion 20B when the first cover portion 20A and the second cover portion 20B are closed. The insulator connection opening 42 is formed on the other side end side of the first cover portion 20A and the second cover portion 20B when the first cover portion 20A and the second cover portion 20B are closed. The edge side electric wire introduction opening 32 is formed above the insulator connection opening 42 when the first cover portion 20A and the second cover portion 20B are closed. The engaging portion 60 is provided on the opposite edge of the first cover portion 20A and the second cover portion 20B, and can be engaged with an indirect hot-line tool. The engaging portion 60 (here, the engaging recess 60B) provided between the edge side electric wire introduction opening 32 and the insulator connection opening 42 is 30 degrees or more with respect to the facing surface 22 (here, the facing surface 22B). It has an insulator 66 that extends along an angle of 90 degrees or less.

In the clamp cover 10 according to the first embodiment, the extending portion 66 attached to the engaging portion 60 extends along an angle of 30 degrees or more and 90 degrees or less with respect to the facing surface 22. The operator can grip the extending portion 66 and engage the engaging portion 60 (engage the engaging convex portion 60A and the engaging concave portion 60B). Further, since the extending portion 66 extends along an angle of 30 degrees or more and 90 degrees or less with respect to the facing surface 22, the operator can easily grip the extending portion 66 while avoiding the insulator B. it can. Therefore, the operator can relatively easily engage the clamp cover 10 at a high place with an indirect hot-line tool, and can also relatively easily remove the clamp cover 10. In other words, the clamp cover 10 is located between the hole for drawing out the edge side electric wire (edge side electric wire introduction opening 32) and the hole for connecting the retaining clamp 1 to the porcelain B (the porcelain connection opening 42). By providing the engaging portion 60 with an extending portion 66 extending in a direction different from the facing surface 22 of the clamp cover 10, it is possible to bring the indirect live wire tool closer from the side surface of the clamp cover 10, so that the indirect active wire tool can be brought close to the engaging portion 60. Engagement with a wire tool can be facilitated.

Further, the extending portion 66 preferably extends along an angle of 45 degrees or more and 85 degrees or less with respect to the facing surface 22. When the clamp cover 10 is used, it is possible to more preferably suppress the insulator B from becoming an obstacle, and the operator can more easily engage the clamp cover 10 with an indirect hot-line tool.

Further, the engaging portion 60 provided between the edge side electric wire introduction opening 32 and the insulator connecting opening 42 is located on the first cover portion 20A side in a direction orthogonal to the engaging convex portion 60A, that is, the facing surface 22A. It has a protruding convex portion 64A, and has an engaging recess 60B, that is, a concave portion 64B on the second cover portion 20B side. When the first cover portion 20A and the second cover portion 20B are closed, the convex portion 64A and the concave portion 64B are engaged with each other by inserting the convex portion 64A into the concave portion 64B. According to the clamp cover 10, an operator can more easily engage the clamp cover 10 at a high place with an indirect hot-line tool.

(Second Embodiment)
Next, the second embodiment will be described. The shape of the engaging portion 60a of the clamp cover 10a according to the second embodiment is different from that of the first embodiment. The description of the parts having the same configuration as that of the first embodiment in the second embodiment will be omitted.

FIG. 7 is a side view of the clamp cover according to the second embodiment. FIG. 8 is an enlarged inner surface development view of the edge side electric wire introduction cylinder portion of the second embodiment. The left side of FIG. 7 is a view of the clamp cover 10a in the open state, and the right side is a view of the clamp cover 10a in the closed state. FIG. 8 is a front view of the edge side electric wire introduction cylinder portion 30. The left side of FIG. 8 is a view in an open state, and the right side is a view in a closed state.

As shown in FIGS. 7 and 8, the engaging portion 60a has an engaging holding portion 60Aa on the first cover portion 20A side and an engaging insertion portion 60Ba on the second cover portion 20B side. The engaging sandwiching portion 60Aa has a plate portion 62Aa. The plate portion 62Aa is a plate-shaped member. As shown in FIG. 8, in the plate portion 62Aa, the connecting portion 62A1a at the end is connected to the edge side electric wire introduction cylinder portion 30A, and extends from the connecting portion 62A1a to the tip portion 62A2a. The plate portion 62Aa extends from the connecting portion 62A1a toward the tip portion 62A2a along the direction Y3. The direction Y3 is a direction from the outer surface 24A, which is a surface opposite to the facing surface 22A of the first cover portion 20Aa, toward the facing surface 22A, that is, a direction orthogonal to the facing surface 22A. The tip portion 62A2a projects toward the direction Y3 from the facing surface 22A.

Further, as shown in FIG. 7, the plate portion 62Aa is provided with a groove portion 64Aa along the direction Y3. The groove portion 64Aa divides the tip portion 62A2a of the plate portion 62Aa into two branches. In the groove portion 64Aa, the width of the bottom portion 64A1a on the connecting portion 62A1a side is larger than the width on the tip portion 62A2a side.

As shown in FIGS. 7 and 8, the engagement insertion portion 60Ba has a plate portion 62Ba. The plate portion 62Ba is a plate-shaped member. As shown in FIG. 8, in the plate portion 62Ba, the connecting portion 62B1a at the end is connected to the edge side electric wire introduction cylinder portion 30B, and extends from the connecting portion 62B1a to the tip portion 62B2a. The plate portion 62Ba extends from the connecting portion 62B1a toward the tip portion 62B2a along the direction Y4. The direction Y4 is a direction along a plane parallel to the facing surface 22B of the second cover portion 20B. The width of the plate portion 62Ba is smaller than the width of the bottom portion 64A1a of the groove portion 64Aa and larger than the width of the groove portion 64Aa on the tip portion 62A2a side. Further, the engaging insertion portion 60Ba is provided with an extending portion 66, similarly to the engaging recess 60B of the first embodiment.

When the clamp cover 10a is closed, the plate portion 62Ba faces the groove portion 64Aa. Further, the extending portion 66 extends toward the tip portion 68 along a direction X1, that is, an angle of 30 degrees or more and 90 degrees or less with respect to the facing surface 22 (away from the surface overlapping the facing surface 22). The operator grasps the extending portion 66 with a tool and moves the extending portion 66 toward the plate portion 62Aa to insert the plate portion 62Ba between the groove portion 64Aa, that is, the plate portion 62Aa. If). As a result, the engaging holding portion 60Aa and the engaging insertion portion 60Ba are engaged with each other. When engaged, the plate portion 62Ba is elastically deformed by receiving a force from the tool via the extending portion 66, so that the plate portion 62Ba can pass through the tip portion 62A2a side of the groove portion 64Aa having a small width. The plate portion 62Ba is deformed back at the position of the bottom portion 64A1a of the groove portion 64Aa having a large width. Since the plate portion 62Ba cannot pass through the tip portion 62A2a side of the groove portion 64Aa unless it is deformed by receiving a force, the engaging holding portion 60Aa and the engaging insertion portion 60Ba are located at the bottom portion 64A1a of the groove portion 64Aa. Engage in the state of being engaged. In other words, the engaging holding portion 60Aa and the engaging insertion portion 60Ba are engaged by sandwiching the plate portion 62Ba between the two forks of the plate portion 62Aa.

Similar to the first embodiment, the clamp cover 10a according to the second embodiment has an extending portion 66 extending along an angle of 30 degrees or more and 90 degrees or less with respect to the facing surface 22. Therefore, the operator can easily engage the engaging concave portion 60B with the engaging convex portion 60A by grasping and moving the extending portion 66.

Further, the engaging portion 60a provided between the edge side electric wire introduction opening 32 and the insulator connection opening 42 projects on the first cover portion 20A side in a direction orthogonal to the facing surface 22A and is divided into two. It has a joint holding portion 60Aa, and has an engaging insertion portion 60Ba extending in a direction along the facing surface 22B on the second cover portion 20B side. When the first cover portion 20A and the second cover portion 20B are closed, the engagement insertion portion 60Aa and the engagement insertion portion 60Ba are sandwiched between the two forks of the engagement sandwich portion 60Aa. And engaged with each other. According to the clamp cover 10a, the operator can relatively easily engage the clamp cover 10a at a high place with an indirect hot-line tool.

(Third Embodiment)
Next, the third embodiment will be described. The shape of the engaging portion 60b of the clamp cover 10b according to the third embodiment is different from that of the first embodiment. The description of the parts having the same configuration as that of the first embodiment in the third embodiment will be omitted.

FIG. 9 is a side view of the clamp cover according to the third embodiment. FIG. 10 is an enlarged inner surface development view of the electric wire introduction cylinder portion of the third embodiment. The left side of FIG. 9 is a view of the clamp cover 10b in the open state, and the right side is a view of the clamp cover 10b in the closed state. FIG. 10 is a front view of the electric wire introduction cylinder portion 30. The left side of FIG. 10 is a view in an open state, and the right side is a view in a closed state.

As shown in FIGS. 9 and 10, the engaging portion 60b has an engaging concave portion 60Ab on the first cover portion 20A side and an engaging convex portion 60Bb on the second cover portion 20B side. The engaging recess 60Ab has a base portion 61Ab, a plate portion 62Ab, and a recessed portion 64Ab. The base portion 61Ab is a member connected to the edge side electric wire introduction cylinder portion 30A. The plate portion 62Ab is a plate-shaped member. In the plate portion 62Ab, the connecting portion 62A1b at the end is connected to the base portion 61Ab and extends from the connecting portion 62A1b to the tip portion 62A2b. The plate portion 62Ab extends in the direction X2 (extending direction) from the connecting portion 62A1b toward the tip portion 62A2b. The direction X2 is a direction away from the plane overlapping the facing surface 22A. That is, the plate portion 62Ab moves away from the surface overlapping the facing surface 22A toward the tip portion 62A2b. In the present embodiment, the angle θ2 between the direction X2 and the facing surface 22A is 30 degrees or more and 90 degrees or less, and more preferably 45 degrees or more and 85 degrees or less. That is, the plate portion 62Ab extends toward the tip portion 62A2b along an angle of 30 degrees or more and 90 degrees or less with respect to the facing surface 22A, and at an angle of 45 degrees or more and 85 degrees or less with respect to the facing surface 22A. It is more preferable to extend along. The recess 64Ab is a hole that opens on the surface of the plate portion 62A and penetrates the plate portion 62Ab.

The engaging convex portion 60Bb has a base portion 61Bb, a plate portion 62Bb, and a convex portion 64Bb. The base portion 61Bb is a member connected to the edge side electric wire introduction cylinder portion 30B. The plate portion 62Bb is a plate-shaped member. In the plate portion 62Bb, the connecting portion 62B1b as the base end portion is fixed to the base portion 61Bb, and extends from the connecting portion 62B1b to the tip portion 62B2b. The plate portion 62Bb extends in the direction X3 from the connecting portion 62B1b toward the tip portion 62B2b. The direction X3 is a direction away from the surface overlapping the facing surface 22B (extending direction). That is, the plate portion 62Bb moves away from the surface overlapping the facing surface 22B toward the tip portion 62B2b. In the present embodiment, the angle θ3 between the direction X3 and the facing surface 22B is 30 degrees or more and 90 degrees or less, and more preferably 45 degrees or more and 85 degrees or less. That is, the plate portion 62Bb extends toward the tip portion 62B2b along an angle of 30 degrees or more and 90 degrees or less with respect to the facing surface 22B, and at an angle of 45 degrees or more and 85 degrees or less with respect to the facing surface 22B. It is more preferable to extend along. The convex portion 64Bb is a protrusion provided on the surface of the plate portion 62Bb and extending in a direction orthogonal to the facing surface 22B. It can also be said that the engaging convex portion 60Bb is an extending portion extending in the direction X3 from the connecting portion 62B1b as the base end portion toward the tip portion 62B2b.

As shown in FIG. 10, when the clamp cover 10b is closed, the directions X2 and the direction X3 overlap and are in the same direction, and the inner surface 63Ab of the plate portion 62Ab and the outer surface 63Bb of the plate portion 62Bb face each other. Then, the plate portion 62Ab and the plate portion 62Bb are sandwiched by the operation of the tool of the operator, and the convex portion 64Bb is engaged (inserted) with the concave portion 64Ab. As a result, the engaging concave portion 60Ab and the engaging convex portion 60Bb are engaged and fixed. In this case, the surface 63Ab and the surface 63Bb are in close contact with each other to form a close contact surface 63b. The close contact surface 63b is a surface parallel to the direction X2 and the direction X3. In other words, the engaging concave portion 60Ab and the engaging convex portion 60Bb are brought into close contact with each other on the contact surface 63b parallel to the direction X3 when the clamp cover 10b is closed and engaged.

When the clamp cover 10b is closed, the engaging concave portion 60Ab and the engaging convex portion 60Bb extend in the direction X2 (direction X3) toward the tip portions 62A2b and 62B2b. In other words, when the clamp cover 10b is closed, the engaging concave portion 60Ab and the engaging convex portion 60Bb are directed toward the tip portions 62A2b and 62B2b along an angle of 30 degrees or more and 90 degrees or less with respect to the facing surface 22. It extends (away from the surface overlapping the facing surface 22). As shown in FIG. 10, the distance L2 between the tip portion 62B2b and the plane overlapping the facing surface 22 is preferably 1 cm or more and 4 cm or less.

FIG. 11A is a diagram for explaining a method of engaging the engaging convex portion and the engaging concave portion of FIG. 9. FIG. 11B is a diagram for explaining a method of engaging the engaging convex portion and the engaging concave portion of FIG. 9. As shown in FIG. 11A, when the operator brings the indirect live wire tool E closer from the direction S1 which is the direction from the lower side in the vertical direction in order to sandwich the engaging concave portion 60Ab and the engaging convex portion 60Bb, the porcelain B Becomes an obstacle and cannot grip the engaging concave portion 60Ab and the engaging convex portion 60Bb. However, in the third embodiment, when the clamp cover 10b is closed, the engaging concave portion 60Ab and the engaging convex portion 60Bb are 30 degrees or more and 90 degrees with respect to the facing surface 22 toward the tip portions 62A2b and 62B2b. It extends along the following angles (away from the surface overlapping the facing surface 22). Therefore, the operator can bring the indirect hot-line tool E closer to the engaging concave portion 60Ab and the engaging convex portion 60Bb from the lateral direction S2 between the engaging concave portion 60Ab and the engaging convex portion 60Bb. Since the direction S2 is the lateral direction, the insulator B does not become an obstacle. Therefore, the operator can easily bring the indirect hot-line tool close to the engaging concave portion 60Ab and the engaging convex portion 60Bb, and as shown in FIG. 11B, the indirect hot-line tool can be relatively easily engaged. Is possible.

The clamp cover 10b according to the third embodiment has an engaging convex portion 60Bb as an extending portion. Therefore, the operator can easily engage the engaging convex portion 60Bb with the engaging concave portion 60Ab by grasping, moving, and sandwiching the engaging convex portion 60Bb and the engaging concave portion 60Ab.

Further, the engaging portion 60b provided between the edge side electric wire introduction opening 32 and the insulator connection opening 42 has an engaging recess 60Ab on the first cover portion 20A side and extends to the second cover portion 20B side. It has an engaging convex portion 60Bb as an insulator. When the first cover portion 20A and the second cover portion 20B are closed, the engaging concave portion 60Ab and the engaging convex portion 60Bb have the convex portion 64Bb of the engaging convex portion 60Bb inserted into the concave portion 64Ab of the engaging concave portion 60Ab. And are engaged with each other. Therefore, the operator can bring the indirect hot-line tool closer to the engaging concave portion 60Ab and the engaging convex portion 60Bb from the direction avoiding the insulator B. Therefore, the operator can more easily engage the clamp cover 10b with an indirect hot-line tool.

(Fourth Embodiment)
Next, the fourth embodiment will be described. The clamp cover 10c according to the fourth embodiment is different from the first embodiment in that a part of the clamp cover 10c is removable. The description of the parts having the same configuration as that of the first embodiment in the fourth embodiment will be omitted.

FIG. 12 is an internal development view of the clamp cover according to the fourth embodiment. As shown in FIG. 12, the clamp cover 10c according to the fourth embodiment includes a first main body portion 12Ac, a second main body portion 12Bc, a hinge portion 14c, a first divided body 16Ac, and a second divided body 16Bc. , With a hinge portion 18c. The first main body portion 12Ac includes a first cover portion 20A, an insulator connecting cylinder portion 40A, an overhead wire introduction cylinder portion 50A, two bottom engaging convex portions 70A, and a grip portion 80. The second main body portion 12Bc includes a second cover portion 20B, an insulator connecting cylinder portion 40B, an overhead wire introduction cylinder portion 50B, two bottom engaging recesses 70B, and a grip portion 80. The first main body portion 12Ac and the second main body portion 12Bc are connected to each other so as to be openable and closable by a hinge portion 14c, forming an integral main body portion 12c. The first cover portion 20A is provided with a spherical edge side electric wire introduction cylinder portion 31A on a side portion (side end) of the facing surface 22A of the first cover portion 20A. More specifically, the spherical edge side electric wire introduction cylinder portion 31A is provided at the position of the apex of the triangle formed by the upper edge portion 23UA and the side edge portion 23SA. Similarly, the second cover portion 20B is provided with a spherical edge side electric wire introduction cylinder portion 31A on the side portion (side end) of the facing surface 22B of the second cover portion 20B. More specifically, the spherical edge side electric wire introduction cylinder portion 31B is provided at the position of the apex of the triangle formed by the upper edge portion 23UB and the side edge portion 23SB. The spherical edge side electric wire introduction cylinders 31A and 31B form a hollow spherical electric wire introduction cylinder 31 facing each other when the first cover portion 20A and the second cover portion 20B are closed. .. The spherical edge side electric wire introduction cylinder portion 31 has an opening at the tip to which the split body 16c described later is attached. The spherical edge side electric wire introduction cylinder portion 31 is provided with a groove for holding the tip of the split body 16c at the end portion opposite to the tip portion where the split body 16c is attached.

The first divided body 16Ac has a spherical edge-side electric wire introduction cylinder portion 30A and an engaging recess 60A. The second divided body 16Bc has a spherical edge side electric wire introduction cylinder portion 30B and an engaging convex portion 60B. The first divided body 16Ac and the second divided body 16Bc are connected to each other by a hinge portion 18c so as to be openable and closable, and form an integral divided body 16c. The split body 16c has a connection opening 33 opened at a position opposite to the edge side electric wire introduction opening 32, and can be attached to the inside of the opening of the main body 12c. The split body 16c has an engaging portion 60 provided between the edge side electric wire introduction opening 32 and the insulator connection opening 42, and a spherical edge side electric wire introduction cylinder portion 30 constituting the edge side electric wire introduction opening 32. It can be said.

When the clamp cover 10c according to the fourth embodiment is used to store the retaining clamp 1, the operator first covers the retaining clamp 1 with the main body portion 12c in an open state using an indirect live wire tool. The bottom engaging convex portion 70A and the bottom engaging concave portion 70B are engaged with each other to close the first cover portion 20A and the second cover portion 20B. After that, the operator uses an indirect hot-line tool to cover the spherical edge side electric wire introduction cylinder portion 31 of the main body portion 12c with the split body 16c so as to sandwich it. The spherical edge-side electric wire introduction cylinder portion 30 of the split body 16c has a connection opening 33 that serves as a locking portion for detachably fitting, making it difficult to separate from the spherical edge-side electric wire introduction cylinder portion 31 of the main body portion 12c. Can be connected. As a result, the engagement of the retaining clamp 1 with the clamp cover 10c is completed.

In the clamp cover 10c according to the fourth embodiment, the edge side electric wire introduction cylinder portion 30 and the engaging portion 60 constituting the edge side electric wire introduction opening 32 form an integral divided body 16, and the divided body 16c is It is removable from the first cover portion 20A and the second cover portion 20B. In other words, the clamp cover 10c has a spherical split body 16c and a spherical edge side electric wire introduction cylinder portion 31 provided in the first cover portion 20A and the second cover portion 20B. The spherical split body 16c has an engaging portion 60 and a spherical edge-side electric wire introduction cylinder portion 30. The spherical edge-side electric wire introduction cylinder portion 30 forms an edge-side electric wire introduction opening 32 and a connection opening 33 that opens on the opposite side of the edge-side electric wire introduction opening 32. The spherical split body 16c is connected to the first cover portion 20A and the second cover portion 20B by covering the spherical edge side electric wire introduction cylinder portion 31 so as to sandwich it. The spherical split body 16c is a locking portion that is detachably fitted to the spherical edge side electric wire introduction cylinder 31 while avoiding the insulator B by simultaneously covering the electric wire A and the spherical edge side electric wire introduction cylinder 31. , Connections that are difficult to separate from each other can be easily performed. Therefore, the split body 16c can be easily attached and detached in the introduction direction of the edge side electric wire.

(Comparison with comparative example)
Next, a comparison of attachment of the existing form of the clamp cover 10x according to the comparative example and the clamp cover according to the first to fourth embodiments will be described with reference to the drawings.

FIG. 13 is an example of an inner surface development view of the clamp cover according to the comparative example. FIG. 14 is an example of a front view of the clamp cover according to the comparative example. As shown in FIGS. 13 and 14, in the clamp cover 10x according to the comparative example, the engaging portion 60x formed by the engaging convex portion 60Ax and the engaging concave portion 60Bx extends along the facing surface. In order to make the clamp cover 10x compact and lightweight, the edge side electric wire introduction portion is short, and the engaging recess 60Bx is close to the position where it comes into contact with the strain insulator. Therefore, in the clamp cover 10x according to the comparative example, the insulator B becomes an obstacle, and it becomes difficult to engage the engaging portion 60x with the indirect hot-line tool.

FIG. 15 is an inner surface development view of the clamp cover according to the second embodiment. FIG. 16 is a front view of the clamp cover according to the second embodiment. FIG. 17 is an internal development view of the clamp cover according to the third embodiment. FIG. 18 is a front view of the clamp cover according to the third embodiment. FIG. 19 is a front view of the clamp cover according to the fourth embodiment. As shown in FIGS. 12, 13 and 15 to 19, the clamp covers according to the first to fourth embodiments extend along an angle of 30 degrees or more and 90 degrees or less with respect to the facing surface. Since it has an extending portion, it is possible to suppress the interference of the insulator B and easily engage the engaging portion 60 with an indirect hot-line tool.

FIG. 20 is a front view in which the edge line of the clamp cover according to the fourth embodiment is upward. As shown in FIGS. 19 and 20, the clamp cover 10c according to the fourth embodiment may have an edge line in the upward direction or the downward direction. As shown in FIG. 20, the upward direction of the edge line means that the extending direction of the split body 16 is inclined upward with respect to the extending direction of the spherical edge side electric wire introduction cylinder portion 31. Further, as shown in FIG. 19, the downward edge line means that the extending direction of the split body 16 is inclined downward with respect to the extending direction of the spherical edge side electric wire introduction cylinder portion 31. ..

FIG. 21 is a diagram illustrating a method of engaging the divided body and the main body according to the fourth embodiment. As shown in FIG. 21, when the clamp cover 10c according to the fourth embodiment is used to store the retaining clamp 1, first, the retaining clamp 1 is covered with the open main body 12c, and the main body 12c is covered. close. After that, the operator uses an indirect hot-line tool to cover the spherical edge side electric wire introduction cylinder portion 31 of the main body portion 12c with the split body 16c so as to sandwich it. The spherical edge-side electric wire introduction cylinder portion 30 of the split body 16c has a connection opening 33 that serves as a locking portion for detachably fitting, making it difficult to separate from the spherical edge-side electric wire introduction cylinder portion 31 of the main body portion 12c. Can be connected. As a result, the engagement of the retaining clamp 1 with the clamp cover 10c is completed.

Although the embodiments of the present invention have been described above, the present invention is not limited to the contents of these embodiments. Further, the above-mentioned components include those that can be easily assumed by those skilled in the art, those that are substantially the same, that is, those having a so-called equal range. Furthermore, the components described above can be combined as appropriate. Further, various omissions, replacements or changes of components can be made without departing from the gist of the above-described embodiment.

1 Retaining clamp 10 Clamp cover 12A 1st main body 12B 2nd main body 14 Hinge part 16, 16A, 16B Split body 20A 1st cover part 20B 2nd cover part 22, 22A, 22B Facing surface 30, 30A, 30B Edge side Electric wire introduction cylinder 32 Edge side electric wire introduction opening 40, 40A, 40B Insulator connection cylinder 50, 50A, 50B Overhead electric wire introduction cylinder 52 Overhead electric wire introduction opening 60 Engagement part 60A Engagement convex part 60B Engagement recess 66 extension Current part A Electric wire B Insulator

Claims (5)

It is a clamp cover for electric wires that consists of an insulator and stores a retaining clamp on the inner surface.
The first cover portion and the second cover portion, which are connected to each other so as to be openable and closable by hinges, have open facing surfaces facing each other, and can store the retaining clamp inside.
When the first cover portion and the second cover portion are closed, an overhead wire introduction opening formed on one side end side of the first cover portion and the second cover portion, and an overhead wire introduction opening.
An insulator connection opening formed on the other side end side of the first cover portion and the second cover portion when the first cover portion and the second cover portion are closed.
When the first cover portion and the second cover portion are closed, the edge side electric wire introduction opening formed above the insulator connection opening and the edge side electric wire introduction opening.
In an electric wire clamp cover provided with an engaging portion that can be engaged with an indirect hot-line tool provided on the opposite edge of the first cover portion and the second cover portion.
The engaging portion provided between the edge-side electric wire introduction opening and the insulator connection opening has an extending portion extending along an angle of 30 degrees or more and 90 degrees or less with respect to the facing surface. And
The engaging portion provided between the edge-side electric wire introduction opening and the insulator connection opening projects toward the first cover portion in a direction orthogonal to the facing surface and is divided into two. It has a portion, and has an engaging insertion portion extending in a direction along the facing surface on the second cover portion side.
When the first cover portion and the second cover portion are closed, the engagement insertion portion and the engagement insertion portion are sandwiched between the two forks of the engagement sandwich portion. And are engaged with each other
Clamp cover for electric wires. It is a clamp cover for electric wires that consists of an insulator and stores a retaining clamp on the inner surface.
The first cover portion and the second cover portion, which are connected to each other so as to be openable and closable by hinges, have open facing surfaces facing each other, and can store the retaining clamp inside.
When the first cover portion and the second cover portion are closed, an overhead wire introduction opening formed on one side end side of the first cover portion and the second cover portion, and an overhead wire introduction opening.
An insulator connection opening formed on the other side end side of the first cover portion and the second cover portion when the first cover portion and the second cover portion are closed.
When the first cover portion and the second cover portion are closed, the edge side electric wire introduction opening formed above the insulator connection opening and the edge side electric wire introduction opening.
In an electric wire clamp cover provided with an engaging portion that can be engaged with an indirect hot-line tool provided on the opposite edge of the first cover portion and the second cover portion.
The engaging portion provided between the edge-side electric wire introduction opening and the insulator connection opening has an extending portion extending along an angle of 30 degrees or more and 90 degrees or less with respect to the facing surface. And
The engaging portion provided between the edge-side electric wire introduction opening and the insulator connection opening has an engaging recess on the first cover portion side, and the extending portion on the second cover portion side. Has an engaging protrusion as,
When the first cover portion and the second cover portion are closed, the engaging concave portion and the engaging convex portion are inserted into the concave portion of the engaging concave portion, and the convex portion of the engaging convex portion is inserted into each other. Engage,
Clamp cover for electric wires. It is a clamp cover for electric wires that consists of an insulator and stores a retaining clamp on the inner surface.
The first cover portion and the second cover portion, which are connected to each other so as to be openable and closable by hinges, have open facing surfaces facing each other, and can store the retaining clamp inside.
When the first cover portion and the second cover portion are closed, an overhead wire introduction opening formed on one side end side of the first cover portion and the second cover portion, and an overhead wire introduction opening.
An insulator connection opening formed on the other side end side of the first cover portion and the second cover portion when the first cover portion and the second cover portion are closed.
When the first cover portion and the second cover portion are closed, the edge side electric wire introduction opening formed above the insulator connection opening and the edge side electric wire introduction opening.
In an electric wire clamp cover provided with an engaging portion that can be engaged with an indirect hot-line tool provided on the opposite edge of the first cover portion and the second cover portion.
The engaging portion provided between the edge-side electric wire introduction opening and the insulator connection opening has an extending portion extending along an angle of 30 degrees or more and 90 degrees or less with respect to the facing surface. And
The electric wire clamp cover has a spherical divided body and a spherical edge side electric wire introduction cylinder portion provided in the first cover portion and the second cover portion.
The split body
The engaging portion provided between the porch side electric wire introduction opening and the insulator connection opening, and
It has a spherical edge-side electric wire introduction tube portion that forms a connection opening that opens on the opposite side of the edge-side electric wire introduction opening, and sandwiches the spherical edge-side electric wire introduction tube portion. By covering with, it is connected to the first cover portion and the second cover portion.
Clamp cover for electric wires. The electric wire clamp cover according to any one of claims 1 to 3, wherein the extending portion extends along an angle of 45 degrees or more and 85 degrees or less with respect to the facing surface. The engaging portion provided between the edge side electric wire introduction opening and the insulator connection opening has a convex portion protruding in a direction orthogonal to the facing surface on the first cover portion side, and the first 2 It has a recess on the cover side,
The electric wire according to claim 3 , wherein the concave portion and the convex portion are engaged with each other by inserting the convex portion into the concave portion when the first cover portion and the second cover portion are closed. Clamp cover.

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