Insulating cover

Abstract

To provide an insulating cover that is easy to attach and detach to a live part using an indirect construction method. [Solution] The insulating cover attached to the charging part comprises a main body, a slit, an engaging part, an engaging receiving part, a first wall, and a second wall. The slit is provided along the central axis of the substantially cylindrical main body that covers the outside of the charging part, allowing the main body to be opened. The engaging part is provided at the first end of the circumferential ends of the slit and has an engaging projection that protrudes toward the second end of the circumferential ends. The engaging receiving part is provided at the second end so as to face the engaging part and has a through hole configured to be engageable when the engaging projection is inserted. The first wall extends from the engaging receiving part toward the opposite side of the engaging part. The second wall extends outward from the outer surface of the main body and is provided on the outer surface, in the circumferential direction, near the second end, so as to face the first wall.

Description

Technical Field

[0006] , , , ,

[0001] This disclosure relates to an insulating cover.

Background Art

[0002] Conventionally, in order to prevent electrical accidents that may occur during construction site work, etc., by directly contacting a charging part such as an electric wire installed between utility poles, an insulating cover that covers and protects the charging part from the outside is known to be used. And the insulating cover was often attached to and detached from the charging part by a direct construction method in which an operator directly performs work with a hand wearing high-voltage gloves.

[0003] However, in recent years, it has been desired that the attachment and detachment of the insulating cover to and from the charging part can be performed by an indirect construction method in which an operator indirectly performs work using tools in consideration of safety. Patent Document 1 discloses an insulating cover configured to be attachable to and detachable from an electric wire by an indirect construction method.

Prior Art Documents

Patent Documents

[0004]

Patent Document Ⅰ

Summary of the Invention

Problems to be Solved by the Invention

[0005] When electrical wire work, etc., is performed by an indirect construction method, it is desirable that the insulating cover can be easily attached to and detached from the charging part using a gripping tool generally used in the indirect construction method. One aspect of this disclosure aims to provide an insulating cover that can be easily attached to and detached from a charging part by an indirect construction method.

Means for Solving the Problems

[0006] One aspect of the present disclosure is an insulating cover to be attached to a charging part, comprising a main body, a slit, an engaging part, an engaging receiving part, a first wall, and a second wall. The main body is substantially cylindrical in shape and covers the outside of the charging part. The slit is provided along the central axis of the main body, allowing the main body to be opened, and has a first end and a second end of the main body facing each other in the circumferential direction around the central axis when the main body covers the charging part. The engaging part is provided at the first end of the slit and has an engaging projection projecting toward the second end. The engaging receiving part is provided at the second end so as to face the engaging part and has a through hole configured to be engageable when the engaging projection is inserted. The first wall extends from the engaging receiving part toward the opposite side of the engaging part. The second wall extends outward from the outer surface of the main body. The second wall is also provided on the outer surface, in the circumferential direction, near the second end, so as to face the first wall.

[0007] In this configuration, when the engaging portion and the engaging receiving portion are gripped with a gripping tool commonly used in indirect construction methods (for example, quick pliers), the engaging portion and the engaging receiving portion move toward each other, and the engaging projection is inserted into the through hole. Therefore, engagement between the engaging projection and the through hole can be easily achieved by the simple operation of gripping with a gripping tool. Furthermore, when the first wall portion and the second wall portion are gripped with a gripping tool, the engaging receiving portion moves toward the engaging portion, and the engaging projection is pulled out of the through hole. Therefore, engagement between the engaging projection and the through hole can be easily released by the simple operation of gripping with a gripping tool. Consequently, the attachment and detachment of the insulating cover to the live part can be easily achieved by the indirect construction method.

[0008] One aspect of the present disclosure may further include a covering piece extending from a first end to a second end of the split portion. One aspect of the present disclosure may further include a covering piece extending from the second end to the first end of the split portion.

[0009] With the above configuration, the charging unit can be effectively prevented from coming out of the slit. One aspect of the present disclosure may further include a first projection and a second projection. The first projection extends outward from a first end. The second projection extends outward from a second end. An engaging portion may be provided at the first end via the first projection. An engaging receiving portion may be provided at the second end via the second projection.

[0010] In this configuration, since the first and second protruding pieces extend from both ends of the slit, the insulating cover tends to stabilize in a position where the first and second protruding pieces are positioned downwards when attached to the live part. Therefore, it is possible to prevent the insulating cover from coming off the live part due to the live part coming out of the slit.

[0011] In one aspect of this disclosure, the first protruding piece may be configured to have higher rigidity than the second protruding piece. In this configuration, the first protruding piece is less prone to deformation compared to the second protruding piece. Therefore, when removing the insulating cover from the live part, that is, when the engagement between the engaging projection and the through hole is released by gripping the first and second wall portions with a gripping tool, even if the second protruding piece deforms, it is possible to suppress the deformation of the first protruding piece and its pulling by the second protruding piece. Consequently, it becomes easier to separate the second protruding piece from the first protruding piece, and as a result, it becomes easier to release the engagement between the engaging projection and the through hole.

[0012] In one aspect of this disclosure, a rib may be provided on the side of the second wall facing the first wall. In this configuration, the ribs improve the rigidity of the second wall. As a result, when removing the insulating cover from the live part, that is, when gripping the first and second walls with a gripping tool to release the engagement between the engaging projection and the through hole, the second wall is less likely to deform. Consequently, the gripping force applied by the gripping tool is more easily applied to the second wall, and as a result, the release of the engagement between the engaging projection and the through hole becomes easier. [Brief explanation of the drawing]

[0013] [Figure 1]This is a side view of the insulating cover of the first embodiment. [Figure 2] This is a perspective view of the insulating cover of the first embodiment. [Figure 3] This is a front view of the end of the insulating cover of the first embodiment. [Figure 4] Figure 4A shows the operation of inserting the live part into the insulating cover using a gripping tool in the indirect method. Figure 4B shows the operation of engaging the engaging projection and the through hole using a gripping tool in the indirect method. Figure 4C shows the state in which the insulating cover is attached to the live part in the indirect method. [Figure 5] Figure 5A shows the operation when releasing the engagement between the engaging projection and the through-hole using a gripping tool in the indirect method. Figure 5B shows the state when the engagement between the engaging projection and the through-hole has been released in the indirect method. Figure 5C shows the operation when removing the insulating cover from the live part using a gripping tool in the indirect method. [Figure 6] This is a side view of the insulating cover of the second embodiment. [Figure 7] This is a cross-sectional view taken along line VII-VII in Figure 6. [Modes for carrying out the invention]

[0014] Hereinafter, exemplary embodiments of the present disclosure will be described with reference to the drawings. [(1) First Embodiment] [1. Structure] The insulating cover 100 shown in Figures 1 to 3 is attached to the live part to protect it from external contact. The live part is a conductive part connected to a power system where electric shock may occur during normal use. The live part is provided on wires such as main lines (i.e., high-voltage distribution lines), drop lines distributed from the main line, routing wires, and edge routing wires, and the live part includes the wire and connection terminals.

[0015] The insulating cover 100 is formed of an insulating material such as synthetic resin. As shown in FIGS. 1 to 3, the insulating cover 100 includes a main body portion 1, a slit portion 2, a first protruding piece 3, a second protruding piece 4, a covering piece 5, an engaging portion 6, an engaging receiving portion 7, a first wall portion 8, and a second wall portion 9. Further, the engaging portion 6, the engaging receiving portion 7, the first wall portion 8, and the second wall portion 9 constitute at least a part of a detaching and attaching mechanism for attaching to and detaching from the charging portion of the insulating cover 100 by an indirect method.

[0016] The main body portion 1 is, as an example, substantially cylindrical and is a portion that covers the outside of the charging portion 200 shown in FIGS. 4A to 4C. The electric wire provided with the charging portion 200 can be inserted along the central axis A of the main body portion 1. In the first embodiment, the main body portion 1 has a substantially constant diameter along the central axis A. Note that the diameter of the main body portion does not have to be constant along the central axis. For example, the main body portion may have a shape in which the diameter decreases (that is, the ends taper) toward each end in the direction along the central axis. Further, the cross-sectional shape perpendicular to the central axis of the main body portion is not limited to a substantially circular shape, and may be, for example, a substantially elliptical shape or a substantially polygonal shape.

[0017] The slit portion 2 is provided in the main body portion 1 along the central axis A. Specifically, the slit portion 2 extends from one end to the other end of the main body portion 1 in the direction along the central axis A. That is, the slit portion 2 is formed by cutting a part of the cylindrical shape of the main body portion 1. The slit portion 2 enables the main body portion 1 to be opened. The slit portion 2 has a first end 21 and a second end 22 of the main body portion 1 that face each other in the circumferential direction that goes around the central axis A when the main body portion 1 covers the charging portion 200. Specifically, the main body portion 1 is opened by widening the interval between the first end 21 and the second end 22 of the slit portion 2 (in other words, both ends in the circumferential direction of the main body portion 1).

[0018] The first protruding piece 3 and the second protruding piece 4 are portions that extend outward from the first end 21 and the second end 22 of the slit portion 2, respectively. Specifically, the first protruding piece 3 and the second protruding piece 4 extend from the first end 21 and the second end 22 of the slit portion 2 so that the distance between them becomes wider, and the extended tip portions are located apart from each other. The first protruding piece 3 and the second protruding piece 4 are plate-shaped and extend in the direction extending from the first end 21 and the second end 22 of the slit portion 2, respectively, and in the direction along the central axis A. The first protruding piece 3 extends from the first end 21 of the slit portion 2, and the second protruding piece 4 extends from the second end 22 of the slit portion 2.

[0019] In the first embodiment, a bent piece 31 that bends and extends toward the second protruding piece 4 side is formed at the tip of the first protruding piece 3. That is, the first protruding piece 3 has a substantially L-shaped cross-sectional shape perpendicular to the axial direction A. Further, as shown in FIG. 3, ribs 33 are provided on the outer surface 32 of the first protruding piece 3 (that is, the surface opposite to the surface facing the second protruding piece 4). The ribs 33 extend substantially perpendicular to the outer surface 32 of the first protruding piece 3 and the outer surface 11 of the main body portion 1, and extend substantially parallel to the plane perpendicular to the central axis A. The ribs 33 are provided so as to straddle the outer surface 32 of the first protruding piece 3 and the outer surface 11 of the main body portion 1. At least one rib 33 is provided in the direction along the central axis A at a position where an engaging portion 6 described later of the first protruding piece 3 is provided. The first protruding piece 3 has higher rigidity than the second protruding piece 4 due to the provision of the ribs 33.

[0020] The covering piece 5 is a plate-shaped portion disposed inside the main body portion 1 and covering the slit portion 2 from the inside. The covering piece 5 extends from the second end 22 of the slit portion 2 toward the first end 21 and extends in the axial direction A. In the first embodiment, the covering piece 5 extends from the second end 22 of the slit portion 2 and curves along the inner peripheral surface of the main body portion 1. Note that the covering piece 5 may extend from the first end 21 of the slit portion 2 toward the second end 22. Further, the main body portion 1 may not be provided with the covering piece 5.

[0021] The engaging portion 6 is provided on the first protruding piece 3. That is, the engaging portion 6 is provided on the first end 21 via the first protruding piece 3. Specifically, the engaging portion 6 is block-shaped and is provided as one at approximately the center in the direction along the central axis A on the lower surface of the bent piece 31 of the first protruding piece 3 (in other words, the surface opposite to the surface facing the main body 1). The engaging portion 6 has an engaging projection 61 that protrudes toward the second protruding piece 4. The engaging projection 61 is provided on the surface of the engaging portion 6 facing the engaging receiving portion 7, which will be described later, so as to protrude toward the second protruding piece 4 than the tip of the bent piece 31.

[0022] The engaging receiving portion 7 is provided on the second protruding piece 4 so as to face the engaging portion 6. That is, the engaging receiving portion 7 is provided on the second end 22 via the second protruding piece 4. Specifically, the engaging receiving portion 7 is plate-shaped with a portion that is thicker than the second protruding piece 4, and one is provided at the tip of the second protruding piece 4, approximately in the center in the direction along the central axis A, i.e., at a position facing the engaging portion 6. In the first embodiment, the engaging receiving portion 7 extends on approximately the same plane as the second protruding piece 4, and the portion surrounding the edge of the through hole 71, which will be described later, is formed to be thicker. The engaging receiving portion 7 has a through hole 71 configured to be engageable when the engaging projection 61 is inserted. The through hole 71 is provided at a position in the engaging receiving portion 7 facing the engaging projection 61. The through hole 71 penetrates the engaging receiving portion 7 in a direction perpendicular to the plate surface of the engaging receiving portion 7. The through-hole 71 is provided with a step that catches on the engaging projection 61 when it moves in the pulling direction opposite to the insertion direction when it is pressed into the through-hole 71.

[0023] The first wall portion 8 is plate-shaped and extends from the engagement receiving portion 7 toward the side opposite to the first protruding piece 3. Specifically, the first wall portion 8 bends and extends from the end of the engagement receiving portion 7 opposite to the end connected to the second protruding piece 4 toward the side opposite to the first protruding piece 3. The first wall portion 8 extends in a direction along the central axis A for a length approximately the same as that of the engagement receiving portion 7. Multiple grooves 81 extending in a direction along the central axis A are formed on the upper surface of the first wall portion 8 (in other words, the surface facing the second wall portion 9, which will be described later).

[0024] The second wall portion 9 is plate-shaped and extends outward from the outer surface 11 of the main body portion 1. Specifically, the second wall portion 9 extends substantially perpendicularly from the outer surface 11 of the main body portion 1 and extends for approximately the same length as the first wall portion 8 in the direction along the central axis A. Furthermore, the second wall portion 9 is located approximately in the center of the outer surface 11 of the main body portion 1 in the direction along the central axis A, and is located near the end of the split portion 2 where the second protruding piece 4 is located (i.e., the second end 22). As a result, the second wall portion 9 is provided so as to face the first wall portion 8 in the circumferential direction. For example, the second wall portion 9 extends substantially parallel to the first wall portion 8.

[0025] A rib 91 is provided on the side of the second wall portion 9 facing the first wall portion 8. The rib 91 extends substantially perpendicular to the plate surface of the second wall portion 9 and the outer surface 11 of the main body portion 1, and spreads substantially parallel to a plane perpendicular to the central axis A. The rib 91 is provided so as to straddle the plate surface of the second wall portion 9 and the outer surface 11 of the main body portion 1. At least one rib 91 is provided in the second wall portion 9 approximately in the center in the direction along the central axis A. The rigidity of the second wall portion 9 is increased by the provision of the rib 91.

[0026] [2. Method for attaching an insulating cover to a live part using an indirect method with a gripping tool] Next, using Figures 4A to 4C, we will explain how to attach the insulating cover 100 to the live part 200 using the gripping tool 300.

[0027] As shown in Figures 4A to 4C, the gripping tool 300 has a first hand portion 301, a second hand portion 302, and a handle portion 303. The gripping tool 300 is a device that can grip and release an object by opening and closing the first hand portion 301 and the second hand portion 302 through operation by the worker. The handle portion 303 may have length to enable use in work at a distance. The gripping tool 300 is a type commonly used in indirect construction methods, such as quick pliers. The operation of the gripping tool 300 described below is performed by the worker operating the handle portion 303.

[0028] First, as shown in Figure 4A, the first wall portion 8 of the insulating cover 100 is gripped using the gripping tool 300. Specifically, the first wall portion 8 is sandwiched between the first hand portion 301 and the second hand portion 302 of the gripping tool 300. Note that the portion gripped by the gripping tool 300 is not limited to the first wall portion 8 of the insulating cover 100; for example, the second protruding piece 4 or the engaging receiving portion 7 may also be gripped.

[0029] Then, the insulating cover 100, which is in the gripped state as described above by the gripping tool 300, is positioned above the charging part 200 so that the charging part 200 is located between the first protruding piece 3 and the second protruding piece 4 of the insulating cover 100.

[0030] Subsequently, the gripping tool 300 is pulled downwards, and the charging part 200 is pressed against the covering piece 5 of the insulating cover 100, thereby widening the gap between the ends 21 and 22 of the split part 2, and with the main body 1 of the insulating cover 100 open, the charging part 200 is passed inside the main body 1.

[0031] Next, as shown in Figure 4B, the engaging portion 6 and engaging receiving portion 7 of the insulating cover 100 are gripped by the first hand portion 301 and the second hand portion 302 of the gripping tool 300. As a result, the engaging portion 6 and the engaging receiving portion 7 move toward each other, and the engaging projection 61 is pressed into the through hole 71. Then, as shown in Figure 4C, the engaging projection 61 and the through hole 71 engage, fixing the first protruding piece 3 and the second protruding piece 4 so that the gap between both ends 21 and 22 of the split portion 2 does not widen, and the closed state of the main body portion 1 is maintained. This completes the attachment of the insulating cover 100 to the charging portion 200.

[0032] [3. Method for removing an insulating cover attached to a live part using an indirect method with a gripping tool] Next, using Figures 5A to 5C, we will explain how to remove the insulating cover 100 attached to the charging unit 200 using the gripping tool 300.

[0033] First, as shown in Figure 5A, the first hand portion 301 and the second hand portion 302 of the gripping tool 300 grip the first wall portion 8 and the second wall portion 9 of the insulating cover 100 attached to the charging portion 200. Specifically, the gripping operation of the gripping tool 300 is performed by bringing the second wall portion 9 into contact with the inside of the first hand portion 301 and the first wall portion 8 into contact with the inside of the second hand portion 302. As a result, as shown in Figure 5B, the second protruding piece 4 elastically deforms so that the first wall portion 8 moves closer to the second wall portion 9. Consequently, the engaging receiving portion 7 moves away from the engaging portion 6, and the engaging projection 61 is pulled out of the through hole 71. Then, the engagement between the engaging projection 61 and the through hole 71 is released, the fixing between the first protruding piece 3 and the second protruding piece 4 is released, and the main body portion 1 becomes openable.

[0034] Next, as shown in Figure 5C, the first wall portion 8 of the insulating cover 100 is gripped using the gripping tool 300. Note that the portion gripped by the gripping tool 300 is not limited to the first wall portion 8 of the insulating cover 100; for example, the second protruding piece 4 or the engaging receiving portion 7 may also be gripped.

[0035] Then, the gripping tool 300 is pulled upward, and the charging part 200 is pressed against the covering piece 5 of the insulating cover 100, thereby widening the gap between both ends 21, 22 of the split part 2, and with the main body 1 of the insulating cover 100 open, the charging part 200 is removed from inside the main body 1. This completes the removal of the insulating cover 100 from the charging part 200.

[0036] [(2) Second Embodiment] [1. Overview] The insulating cover 400 of the second embodiment is attached to the live part to protect it from external contact, similar to the first embodiment (see Figures 6 and 7). The insulating cover 400 is made of the same material as the first embodiment and is attached to and removed from the live part indirectly, for example, using quick pliers, similar to the first embodiment. However, the insulating cover 400 of the second embodiment differs from that of the first embodiment in its shape. The following will focus on the differences between the insulating cover 400 of the second embodiment and that of the first embodiment.

[0037] The insulating cover 400 comprises a main body portion 401, a split portion 402, a first protruding piece 403, a second protruding piece 404, a covering piece 405, a plurality of engaging portions 406, a plurality of engaging receiving portions 407, a plurality of first wall portions 408, and a plurality of second wall portions 409.

[0038] [2. Main body] The main body portion 401 is cylindrical, extends along the central axis A, and, like the main body portion 1 of the first embodiment, covers the outside of the charging portion (see Figures 6 and 7). The main body portion 401 has a substantially circular cross-section perpendicular to the central axis A. Of course, the shape of the cross-section of the main body portion 401 is not limited to a substantially circular shape and can be determined as appropriate.

[0039] The main body 401 has first to third parts 412 to 414, and these parts have different cross-sectional sizes. Specifically, the first part 412 extends from one end of the main body 401 and has a substantially constant cross-sectional size. The third part 414 extends from the other end of the main body 401 and has a substantially constant cross-sectional size, but is larger than the first part 412. The second part 413 is located between the first part 412 and the third part 414, and its cross-sectional size gradually decreases as it approaches the first part 412.

[0040] Furthermore, the main body portion 401 has an edge portion 415. The edge portion 415 extends from one end of the main body portion 401 to the other end and faces the split portion 402 across the central axis A. The edge portion 415 is formed by overlapping plate-like portions in the circumferential direction.

[0041] [3. Split section and detachable mechanism] The slit portion 402 is provided along the central axis A from one end to the other of the main body portion 401, similar to the first embodiment, and allows the main body portion 401 to be opened (see Figures 6 and 7). The slit portion 402 has a first end 421 and a second end 422 of the main body portion 1 that face each other in the circumferential direction when the main body portion 401 covers the charging portion 200.

[0042] Furthermore, the insulating cover 400 of the second embodiment is provided with multiple (for example, five) attachment / detachment mechanisms similar to those of the first embodiment. The attachment / detachment mechanism has an engaging portion 406, an engaging receiving portion 407, a first wall portion 408, and a second wall portion 409, similar to those of the first embodiment.

[0043] In other words, the first end 421 and the second end 422 of the split portion 402 are provided with a first protruding piece 403 and a second protruding piece 404, respectively, similar to those in the first embodiment. For example, the first protruding piece 403 and the second protruding piece 404 each extend from one end to the other of the main body portion 401. The first protruding piece 403 and the second protruding piece 404 are provided with multiple attachment / detachment mechanisms similar to those in the first embodiment.

[0044] Specifically, the first protruding piece 403 has a plurality of bent pieces 431 and a plurality of engaging portions 406, similar to the first embodiment, and a plurality of ribs 433 are provided on the outer surface 432 of the first protruding piece 403. Each rib 433 is arranged to connect to the bent pieces 431 and the engaging portions 406. The second protruding piece 404 has a plurality of engaging receiving portions 407 and a plurality of first wall portions 408, similar to the first embodiment.

[0045] The second wall portion 409 extends outward from the outer surface 411 of the main body portion 401, similar to the first embodiment. Also, a rib 491 is provided on the side of the second wall portion 409 facing the first wall portion 408, similar to the first embodiment.

[0046] Of course, the bent piece 431 and engaging portion 406, the engaging receiving portion 407 and the first wall portion 408, and the second wall portion 409 included in each attachment / detachment mechanism are arranged to face each other in the circumferential direction. The covering piece 405, like in the first embodiment, is a plate-shaped portion positioned inside the main body 401 and covering the split portion 402 from the inside. However, in the second embodiment, the covering piece 405 differs from the first embodiment in that it extends from the first end 421 toward the second end 422 of the split portion 402. Also, the covering piece 405 in the second embodiment is shorter in the circumferential direction than in the first embodiment. Of course, the covering piece 405 may extend from the second end 422 toward the first end 421 of the split portion 402, as in the first embodiment. Furthermore, the main body 401 may not be provided with the covering piece 405.

[0047] [(3) Effects] According to the embodiments described in detail above, the following effects can be obtained. (3a) In this embodiment, the insulating cover 100 includes an engaging portion 6, an engaging receiving portion 7, a first wall portion 8, and a second wall portion 9. As a result, when the engaging portion 6 and the engaging receiving portion 7 are gripped by the gripping tool 300, the engaging portion 6 and the engaging receiving portion 7 move toward each other, and the engaging projection 61 is pressed into the through hole 71. Therefore, engagement between the engaging projection 61 and the through hole 71 can be easily performed by the simple operation of gripping with the gripping tool 300. Furthermore, when the first wall portion 8 and the second wall portion 9 are gripped by the gripping tool 300, the second protruding piece 4 elastically deforms so that the first wall portion 8 moves toward the second wall portion 9. As a result, the engaging receiving portion 7 moves toward the engaging portion 6, and the engaging projection 61 is pulled out of the through hole 71. Therefore, engagement between the engaging projection 61 and the through hole 71 can be easily released by the simple operation of gripping with the gripping tool 300. Therefore, the insulating cover 100 can be easily attached to and detached from the live part 200 using an indirect method.

[0048] (3b) In this embodiment, the cross-sectional shape of the first protruding piece 3 is substantially L-shaped, and a rib 33 is provided on the outer surface 32 of the first protruding piece 3. On the other hand, the second protruding piece 4 is flat, and no rib is provided on the second protruding piece 4. As a result, the rigidity of the first protruding piece 3 tends to be higher than that of the second protruding piece 4, and therefore the first protruding piece 3 is less prone to deformation compared to the second protruding piece 4. For this reason, when removing the insulating cover 100 from the live part 200, that is, when the engagement between the engaging projection 61 and the through hole 71 is released by gripping the first wall portion 8 and the second wall portion 9 with the gripping tool 300, even if the second protruding piece 4 deforms, it is possible to suppress the deformation of the first protruding piece 3 and being pulled by the second protruding piece 4. Therefore, it becomes easier to separate the second protruding piece 4 from the first protruding piece 3, and as a result, it becomes easier to release the engagement between the engaging projection 61 and the through hole 71.

[0049] (3c) In this embodiment, a rib 91 is provided on the side of the second wall portion 9 facing the first wall portion 8. This improves the rigidity of the second wall portion 9. As a result, when removing the insulating cover 100 from the live portion 200, that is, when the first wall portion 8 and the second wall portion 9 are gripped with the gripping tool 300 to release the engagement between the engaging projection 61 and the through hole 71, the second wall portion 9 is less likely to deform. Therefore, the gripping force applied by the gripping tool 300 is more easily applied to the second wall portion 9, and as a result, the engagement between the engaging projection 61 and the through hole 71 can be released more easily.

[0050] (3d) In this embodiment, the insulating cover 100 is provided with a first protruding piece 3 and a second protruding piece 4. Therefore, when the insulating cover 100 is attached to the charging part 200, it is easier to stabilize in a position where the first protruding piece 3 and the second protruding piece 4 are positioned downwards. Thus, it is possible to prevent the insulating cover 100 from coming off the charging part 200 due to the charging part 200 coming out of the split 2. In addition, the first protruding piece 3 and the second protruding piece 4 extend from both ends 21, 22 of the split 2 so that the distance between them widens. Therefore, it is easier to pass the charging part 200 from the split 2 into the main body 1 along the gap between the first protruding piece 3 and the second protruding piece 4.

[0051] (3e) In this embodiment, the insulating cover 100 is provided with a covering piece 5. Therefore, when the insulating cover 100 is attached to the charging part 200, the slit portion 2 is covered by the covering piece 5. That is, when the charging part 200 is inserted into the main body portion 1, the covering piece 5 is positioned between the charging part 200 and the slit portion 2. Therefore, it is possible to prevent the insulating cover 100 from coming off the charging part 200 due to the charging part 200 coming out of the slit portion 2.

[0052] In this embodiment, the rib 91 is an example of a rib. [(4) Other Embodiments] While embodiments of this disclosure have been described above, it goes without saying that this disclosure is not limited to the embodiments described above and can take various forms.

[0053] (4a) In the first and second embodiments, the first protruding piece 3,403 was configured to have higher rigidity than the second protruding piece 4,404. However, for example, the rigidity of the first protruding piece 3,403 and the second protruding piece 4,404 may be approximately the same. Also, for example, the first protruding piece 3,403 may be configured to have lower rigidity than the second protruding piece 4,404.

[0054] (4b) In the first and second embodiments, the rigidity of the first protruding piece 3,403 was made higher than that of the second protruding piece 4,404 by providing ribs 33,433 on the first protruding piece 3,403. However, the method for making the rigidity of the first protruding piece 3,403 higher than that of the second protruding piece 4,404 is not limited to this. For example, the rigidity of the first protruding piece 3,403 may be made higher than that of the second protruding piece 4,404 by making the plate thickness of the first protruding piece 3,403 thicker than that of the second protruding piece 4,404.

[0055] (4c) In the first embodiment, one rib 33 was provided on the outer surface 32 of the first protruding piece 3. However, for example, multiple ribs 33 may be provided on the outer surface 32 of the first protruding piece 3 so as to be spaced apart from each other along the central axis A. Also, for example, the ribs 33 may not be provided on the outer surface 32 of the first protruding piece 3.

[0056] (4d) In the first and second embodiments, one rib 91,491 was provided on the side of the second wall portion 9,409 facing the first wall portion 8,408. However, for example, multiple ribs 91,491 may be provided on the side of the second wall portion 9,409 facing the first wall portion 8,408 so as to be spaced apart from each other along the central axis A. Also, for example, the ribs 91,491 do not have to be provided on the second wall portion 9,409. Also, for example, the ribs may be provided on the side of the second wall portion 9,409 opposite to the side facing the first wall portion 8,408.

[0057] (4e) In the first and second embodiments, the rigidity of the second wall portion 9,409 was increased by providing ribs 91,491 on the second wall portion 9,409. However, the rigidity of the second wall portion 9,409 may also be increased by, for example, increasing the thickness of the plate of the second wall portion 9,409.

[0058] (4f) In the first embodiment, one engaging portion 6 and one engaging receiving portion 7 are provided approximately in the center in the direction along the central axis A. However, the position and number of engaging portions and engaging receiving portions are not limited to this. For example, the engaging portion 6 and the engaging receiving portion 7 may be provided near the ends of the first protruding piece 3 and the second protruding piece 4 in the direction along the central axis A. Alternatively, for example, multiple engaging portions 6 and engaging receiving portions 7 may be provided on the first protruding piece 3 and the second protruding piece 4 so as to be spaced apart from each other along the central axis A. Accordingly, multiple first wall portions 8 and second wall portions 9 may also be provided at positions corresponding to multiple engaging portions 6 and multiple engaging receiving portions 7.

[0059] (4g) The length of the insulating covers 100,400 in the direction along the central axis A can be configured to be long or short. In addition, the insulating covers 100,400 may be configured to be connectable at the ends in the direction along the central axis A. This makes it easy to adjust the length covering the live part 200 by the number of insulating covers 100,400 that are connected. For this reason, the insulating covers 100,400 can be attached to accommodate live parts 200 of various lengths. Furthermore, in a configuration in which multiple insulating covers 100,400 are connected, if the connecting parts are configured to be elastically deformable, the insulating covers 100,400 can be attached to accommodate live parts with a bent or curved shape.

[0060] (4h) In the first and second embodiments, the insulating covers 100, 400 were provided with a first protruding piece 3, 403 and a second protruding piece 4,404, but the configuration of the insulating cover is not limited thereto. For example, the insulating cover does not have to have a first protruding piece and a second protruding piece. In this case, the engaging portion may be provided directly at the first end of the split portion, and the engaging receiving portion may be provided directly at the second end of the split portion.

[0061] (4i) The functions of one component in the above embodiment may be distributed among multiple components, or the functions of multiple components may be integrated into one component. Also, some parts of the configuration of the above embodiment may be omitted. Also, at least some parts of the configuration of the above embodiment may be added to, replaced with, or otherwise adapted to the configuration of other above embodiments. [Explanation of symbols]

[0062] 1...Main body, 2...Slit, 3...First protruding piece, 4...Second protruding piece, 5...Covering piece, 6...Engaging part, 7...Engaging receiving part, 8...First wall part, 9...Second wall part, 11, 32...Outer surface, 21...First end, 22...Second end, 31...Bent piece, 32, 91...Rib, 61...Engaging projection, 71...Through hole, 81...Groove part, 100...Insulating cover, 200...Charging part, 300...Gripping tool, 301...First hand part, 302...Second hand part, 303...Handle part, 401...Main body, 411...Outer Surface, 412...First part, 413...Second part, 414...Third part, 415...Edge, 402...Slit, 421...First end, 422...Second end, 403...First projection, 431...Bent piece, 432...Outer surface, 433...Rib, 404...Second projection, 405...Covering piece, 406...Engaging part, 461...Engaging projection, 407...Engaging receiving part, 471...Through hole, 408...First wall, 481...Groove, 409...Second wall, 491...Rib, 400...Insulating cover, A...Central axis.

Claims

1. An insulating cover that is attached to the charging part, The main body portion is roughly cylindrical and covers the outside of the charging section, A slit is provided along the central axis of the main body, which allows the main body to be opened, and when the main body covers the charging part, the slit has a first end and a second end of the main body facing each other in the circumferential direction around the central axis, An engaging portion having an engaging projection provided at the first end of the aforementioned split portion and projecting toward the second end, An engagement receiving portion is provided at the second end so as to face the engagement portion and has a through hole configured to be able to engage when the engagement projection is inserted, A first wall portion extending from the engagement receiving portion toward the opposite side from the engagement portion, A second wall portion extending outward from the outer surface of the main body portion, Equipped with, The second wall portion is an insulating cover provided on the outer surface in the circumferential direction near the second end, facing the first wall portion.

2. An insulating cover according to claim 1, The aforementioned split portion further comprises a covering piece extending from the first end toward the second end. Insulating cover.

3. An insulating cover according to claim 1, The aforementioned split portion further comprises a covering piece extending from the second end toward the first end. Insulating cover.

4. An insulating cover according to claim 1, A first projection extending outward from the first end, The present invention further comprises a second projection extending outward from the second end, The engaging portion is provided at the first end via the first protruding piece, The engagement receiving portion is an insulating cover provided at the second end via the second protruding piece.

5. An insulating cover according to claim 4, An insulating cover wherein the first protruding piece is configured to have higher rigidity than the second protruding piece.

6. An insulating cover according to any one of claims 1 to 5, An insulating cover having ribs provided on the side of the second wall facing the first wall.

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