converter equipment

Abstract

To provide a current transformer fitting that can suppress removal of a current transformer.SOLUTION: A current transformer fitting 1 includes a hole 30 through which an electric wire 2 passes, and a current transformer 3 that measures a current flowing through the electric wire 2 is attached to a part of the electric wire 2. The current transformer fitting 1 includes a first component 4 attached to a part of the electric wire 2, and a second component 5 that is combined with the first component 4 and holds the current transformer 3 between the second component and the first component 4. The first component 4 includes an insertion portion 40 extending along the electric wire 2 and passing through the hole 30 of the current transformer 3, and a protruding portion 41 that protrudes from the insertion portion 40 on the side opposite to the electric wire 2 on the outside of the hole 30. The second component 5 has an annular portion 53 provided with a through hole 52 through which the electric wire 2 and the insertion portion 40 pass. The annular portion 53 is configured to press and fix the insertion portion 40 against the electric wire 2.SELECTED DRAWING: Figure 1

Description

Technical Field

[0006] , , ,

[0005] , , ,

[0001] The present disclosure relates to a current transformer mounting tool, and more particularly to a current transformer mounting tool for mounting a current transformer on a part of an electric wire.

Background Art

[0002] As a device for measuring current, a current transformer having a donut shape and a hole for passing a cable (i.e., an electric wire) through the center is conventionally known (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, when the current transformer is removed from the electric wire at the attachment destination and attached to another electric wire, the current of the electric wire to be measured cannot be measured, which may cause inconvenience.

[0005] In view of the above circumstances, an object of the present disclosure is to provide a current transformer mounting tool capable of suppressing the removal of the current transformer.

Means for Solving the Problems

[0006] A current transformer mounting device according to one aspect of the present disclosure is a current transformer mounting device for mounting a current transformer, which has a hole through which a wire passes and measures the current flowing through the wire, to a portion of the wire. The current transformer mounting device comprises a first component attached to the portion of the wire, and a second component combined with the first component and holding the current transformer between itself and the first component. The first component extends along the wire and has a through-hole that passes through the hole of the current transformer, and a projection that protrudes from the through-hole on the outside of the hole toward the opposite side from the wire. The second component has an annular portion with a through-hole through which the wire and the through-hole pass. The annular portion is configured to press and fix the through-hole against the wire.

[0007] Furthermore, a current transformer mounting device according to one aspect of the present disclosure is a current transformer mounting device for mounting a current transformer, which has a hole through which a wire passes and measures the current flowing through the wire, to a part of the wire. The current transformer mounting device comprises a mounting device body, a first cord-like portion extending from the mounting device body and forming a loop surrounding the wire, and a second cord-like portion extending from the mounting device body and forming a loop passing through the hole of the current transformer. The mounting device body is provided with a first fixing portion for fixing a part of the first cord-like portion to the mounting device body, and a second fixing portion for fixing a part of the second cord-like portion to the mounting device body. [Effects of the Invention]

[0008] A current transformer mounting device according to one aspect of this disclosure can suppress the removal of the current transformer. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1A is a partially cutaway front view showing the mounting state of the current transformer mounting device according to Embodiment 1 of the present disclosure, and Figure 1B is a front view showing the mounting state of the same current transformer mounting device. [Figure 2] Figure 2A is an exploded perspective view showing the first component of the current transformer mounting device, and Figure 2B is a front cross-sectional view showing the assembled state of the first component. [Figure 3]Figures 3A and 3B are partially broken front views showing, in sequence, how a current transformer is attached to a portion of an electric wire using the same current transformer mounting device. [Figure 4] Figure 4A is an exploded perspective view showing a modified example of the current transformer mounting device, and Figure 4B is a front cross-sectional view of the assembled version of the current transformer mounting device. [Figure 5] Figure 5 is a front view showing a current transformer mounting device according to Embodiment 2 of this disclosure. [Figure 6] Figure 6A is a perspective view showing the current transformer mounting device as described above, and Figure 6B is a front view showing the current transformer mounting device as described above before mounting. [Modes for carrying out the invention]

[0010] (Embodiment 1) 1. Overview The current transformer mounting device 1 (hereinafter referred to as "mounting device 1") of Embodiment 1 shown in Figures 1A and 1B is a current transformer mounting device for mounting a current transformer 3, which has a hole 30 through which a wire 2 passes and measures the current flowing through the wire 2, to a part of the wire 2. The current transformer mounting device 1 comprises a first component 4 that is attached to a part of the wire 2, and a second component 5 that is combined with the first component 4 and holds the current transformer 3 between itself and the first component 4. The first component 4 has an insertion portion 40 that extends along the wire 2 and passes through the hole 30 of the current transformer 3, and a projection portion 41 that protrudes from the insertion portion 40 on the outside of the hole 30 toward the opposite side from the wire 2. The second component 5 has an annular portion 53 through which the wire 2 and the insertion portion 40 pass. The annular portion 53 is configured to press and fix the insertion portion 40 against the wire 2.

[0011] In the mounting device 1 of Embodiment 1 having the above configuration, the annular portion 53 of the second component 5 can press the insertion portion 40 of the first component 4 against the electric wire 2 and fix it in place, thereby fixing the first component 4 and the second component 5 to the electric wire 2. Therefore, in the mounting device 1 of Embodiment 1, it is possible to suppress the removal of the current transformer 3 held by the first component 4 and the second component 5.

[0012] 2.Details Next, the wearing device 1 of Embodiment 1 will be described in more detail with reference to the drawings. The wearing device 1 is a member for wearing the current transformer 3 on a part of the electric wire 2.

[0013] 2-1. Electric wire The electric wire 2 is, for example, an electric wire connected to a breaker (wiring circuit breaker) installed in a distribution board. The electric wire 2 is an insulated electric wire in which a conductor such as a single wire or a stranded wire is coated with an insulator such as polyvinyl chloride, fluororesin, crosslinked polyethylene, natural rubber, or synthetic rubber. The electric wire 2 extends, for example, downward from the breaker in parallel with the vertical direction.

[0014] 2-2. Current transformer The current transformer 3 is an annular device having a hole 30 through which a part of the electric wire 2 passes. In the present embodiment, the current transformer 3 is annular in plan view and has a hole 30 penetrating the current transformer 3 in the vertical direction at the center. The current transformer 3 can measure the current flowing through the electric wire 2 passed through the hole 30. As the current transformer 3, a conventionally well-known current transformer can be used.

[0015] 2-3. Wearing device The wearing device 1 has a first component 4 attached to a part of the electric wire 2, and a second component 5 combined with the first component 4 and holding the current transformer 3 between the first component 4 and the second component 5. Hereinafter, with respect to the wearing device 1, the direction will be defined based on the state of being attached to the electric wire 2 extending in the vertical direction shown in FIGS. 1A and 1B, and each component of the wearing device 1 will be described in detail. Among the wearing device 1, the component attached from below with respect to the hole 30 of the current transformer 3 is the first component 4, and the component attached from above with respect to the hole 30 of the current transformer 3 is the second component 5.

[0016] 2-3-1. First component As shown in FIG. 1A, the first component 4 has an insertion portion 40 extending along the electric wire 2 and passing through the hole 30 of the current transformer 3, and a protruding portion 41 protruding from the insertion portion 40 to the side opposite to the electric wire 2 outside the hole 30.

[0017] In this embodiment, the first component 4 is composed of a plurality of divided bodies 4a and 4b that are positioned to surround the electric wire 2. More specifically, as shown in FIG. 2A, the first component 4 is composed of two divided bodies 4a and 4b on the left and right. The two divided bodies 4a and 4b have the same shape.

[0018] Each of the two divided bodies 4a and 4b has an insertion portion 40 and a protruding portion 41. Therefore, the first component 4 has a plurality (specifically, two) of insertion portions 40 and a plurality (specifically, two) of protruding portions 41.

[0019] The protruding portion 41 is semi-annular in a plan view (when viewed in the length direction of the electric wire 2), and more specifically, it is semi-circular. The protruding portion 41 is flat.

[0020] A locking portion 410 is provided at one end in the circumferential direction of the protruding portion 41, and a locked portion 411 is provided at the other end in the circumferential direction of the protruding portion 41. The locking portion 410 is located above the locked portion 411. The lower surface of the locking portion 410 is the locking surface 412. The locking surface 412 has a portion on the tip side (one end side in the circumferential direction) protruding downward more than the portion on the base side (the other end side in the circumferential direction). The upper surface of the locked portion 411 is the locked surface 413. The locked surface 413 has a portion on the base side (one end side in the circumferential direction) recessed more than the portion on the tip side (the other end side in the circumferential direction).

[0021] The protruding portions 41 of the two divided bodies 4a and 4b are such that the locking portion 410 of one (right side) divided body 4a overlaps on the locked portion 411 of the other (left side) divided body 4b, and the locking surface 412 is caught on the locked surface 413. And the locking portion 410 of the other (left side) divided body 4b overlaps on the locked portion 411 of one (right side) divided body 4a, and the locking surface 412 is caught on the locked surface 413 (see FIG. 2B). Thereby, the protruding portions 41 of the two divided bodies 4a and 4b mutually restrict movement in the vertical direction and also mutually restrict movement in the separating direction in the horizontal direction (that is, the outer side in the left-right direction).

[0022] When the locking portion 410 and the locked portion 411 of the two divided parts 4a and 4b are interlocked, the two protruding portions 41 form an annular shape in plan view, or more specifically, a circular annular shape. A through hole 42 is formed between the two protruding portions 41. The electric wire 2 and the insertion portion 50 of the second part 5, which will be described later, pass through the through hole 42. Therefore, the first part 4 has an annular portion 43 through which the electric wire 2 and the insertion portion 50 of the second part 5 pass.

[0023] The insertion portion 40 protrudes upward from a part of the inner periphery of the semi-annular projection 41. In this embodiment, the insertion portion 40 protrudes upward from the circumferential middle portion of the inner periphery of the projection 41. The insertion portion 40 is deformable so that its upper part moves inward in the left-right direction (towards the through hole 42), that is, it is flexible.

[0024] The insertion portion 40 is provided with a projection 400 that bites into the electric wire 2. The insertion portion 40 is also provided with a retaining portion 401 that restricts movement of the annular portion 53 away from the protruding portion 41.

[0025] The insertion portion 40 has a plate-shaped main body portion 402 that is curved in an arc shape when viewed from above, a projection 400 that protrudes from the inner surface of the main body portion 402 (the surface facing the through hole 42), and a retaining portion 401 that protrudes from the outer surface of the main body portion 402 (the surface facing the opposite side of the through hole 42).

[0026] The retaining portion 401 has a plurality of protrusions 403 arranged in the vertical direction. Each of the plurality of protrusions 403 is provided along the entire length of the outer surface of the main body portion 402 in the circumferential direction and is arc-shaped in plan view. The plurality of protrusions 403 are provided parallel to each other. The plurality of protrusions 403 are provided from the upper end to the middle part in the vertical direction of the outer surface of the main body portion 402.

[0027] As shown in Figure 2B, each of the multiple protruding portions 403 has an upright surface 404 extending vertically or substantially vertically from the main body portion 402, and a guide surface 405 that is continuous with the tip of the upright surface 404 and is inclined so that the upper portion is located further inward. In this embodiment, the retaining portion 401 has four protruding portions 403.

[0028] The projection 400 is provided in a triangular pyramidal shape. The projection 400 protrudes from the inner surface of the main body 402, below the retaining portion 401 and adjacent to the retaining portion 401. The projection 400 protrudes from the middle of the circumferential direction of the inner surface of the main body 402.

[0029] When the two divided bodies 4a and 4b are combined, the two insertion portions 40 of the two divided bodies 4a and 4b face each other. In the circumferential direction, a gap wider than the circumferential length of the insertion portion 40 is formed between the two insertion portions 40. The four protrusions 403 of the retaining portion 401 of one insertion portion 40 and the four protrusions 403 of the retaining portion 401 of the other insertion portion 40 are at the same vertical position. Also, the two projections 400 of the two insertion portions 40 are at the same vertical position.

[0030] 2-3-2.Second part As shown in Figure 1A, the second component 5 has an annular portion 53 through which the electric wire 2 and the insertion portion 40 pass. The annular portion 53 is configured to press the insertion portion 40 against the electric wire 2.

[0031] The second component 5 has at least an annular portion 53 through which the electric wire 2 and the insertion portion 40 pass. The annular portion 53 is configured to press the insertion portion 40 against the electric wire 2.

[0032] The second component 5 is composed of multiple (two in this embodiment) divided parts 5a and 5b positioned to surround the electric wire 2.

[0033] In this embodiment, the second part 5 has the same shape as the first part 4. The second part 5 is a part that has the same shape as the first part 4 but is inverted.

[0034] Therefore, the second part 5 is composed of two divided parts 5a and 5b, which correspond to the two divided parts 4a and 4b of the first part 4. Each of the two divided parts 5a and 5b has an insertion part 50, a projection 500, a retaining part 501, a main body part 502, a plurality of protruding parts 503, a projection 51, a locking part 510, and a locked part 511, similar to the divided parts 4a and 4b. The annular part 53 is composed of the two projection parts 51 of the divided parts 5a and 5b, and the annular part 53 is provided with a through hole 52.

[0035] 2-4. Method for attaching a current transformer to a portion of an electric wire Next, we will explain how to attach the current transformer 3 to a portion of the electric wire 2 using the mounting device 1 described above.

[0036] A current transformer 3 is attached to the electric wire 2 such that a portion of the electric wire 2 passes through the hole 30 of the current transformer 3. The current transformer 3 is attached to the electric wire 2 while the electric wire 2 is disconnected from the circuit breaker or other connection point. After the current transformer 3 is attached to the electric wire 2, the electric wire 2 is connected to the circuit breaker or other connection point.

[0037] First, as shown in Figure 3A, the first component 4 is attached to a portion of the electric wire 2. More specifically, the two divided parts 4a and 4b are first positioned so as to sandwich the electric wire 2, and the insertion portions 40 of the two divided parts 4a and 4b are inserted into the holes 30 of the current transformer 3 from below. Next, the locking portions 410 and the locked portions 411 of the two divided parts 4a and 4b are interlocked, and the protruding portions 41 of the two divided parts 4a and 4b are connected.

[0038] Next, as shown in Figures 3B and 1, the second component 5 is attached to the electric wire 2. Specifically, first, as shown in Figure 3B, the two divided parts 5a and 5b are positioned so as to sandwich the electric wire 2, and the locking parts 510 and the locked parts 511 of the two divided parts 5a and 5b are interlocked to connect the protruding parts 51 of the two divided parts 5a and 5b.

[0039] Next, the insertion portions 50 of the two divided bodies 5a and 5b are inserted into the hole 30 of the current transformer 3 from above, such that they are positioned between the two insertion portions 40 of the first component 4 in the circumferential direction. The two divided bodies 5a and 5b are inserted into the hole 30 of the current transformer 3 with the arrangement of their two insertion portions 50 offset by approximately 90 degrees in a plan view relative to the two insertion portions 40 of the two divided bodies 4a and 4b.

[0040] The insertion portion 50 of each of the two divided parts 5a and 5b is inserted until one of the four protruding portions 503 of the retaining portion 501 catches on the edge of the through hole 42 of the protruding portion 41 (annular portion 43) of the first component 4, and the insertion portion 50 presses against the electric wire 2. When inserted, the insertion portion 50 of each of the two divided parts 5a and 5b is pushed against the edge of the through hole 42 of the protruding portion 41 (annular portion 43) of the first component 4, causing it to bend toward the electric wire 2.

[0041] When the two divided parts 5a and 5b are inserted to the above position, one of the four protruding parts 403 of the retaining part 401 of the first part 4 catches on the edge of the through hole 52 of the protruding part 51 (annular part 53) of the second part 5, and the insertion part 40 presses against the electric wire 2. The insertion part 40 of the two divided parts 4a and 4b bends toward the electric wire 2 as it is pressed against the edge of the through hole 52 of the protruding part 51 (annular part 53) of the second part 5.

[0042] In this way, the two retaining parts 401 of the first part 4 catch on the edge of the through hole 52 of the annular part 53 of the second part 5, and the two retaining parts 501 of the second part 5 catch on the edge of the through hole 42 of the annular part 43 of the first part 4. As a result, parts 4 and 5 are attached to the electric wire 2.

[0043] With components 4 and 5 attached to the electric wire 2, the projections 400 of the two insertion portions 40 of the two divided bodies 4a and 4b bite into the outer sheath (insulation) of the electric wire 2, and the projections 500 of the two insertion portions 50 of the two divided bodies 5a and 5b bite into the outer sheath (insulation) of the electric wire 2. As the insertion portions 40 and 50 flex against the edge of the holes of the annular portions 53 and 43, each projection 400 and 500 can be more securely bitten into the electric wire 2.

[0044] As described above, by attaching components 4 and 5 to the electric wire 2, components 4 and 5 are fixed to the electric wire 2 in a way that makes them difficult to remove. As a result, the current transformer 3 is held between the two protrusions 41 (annular portion 43) of the first component 4 and the two protrusions 51 (annular portion 53) of the second component 5, and the current transformer 3 is indirectly fixed to a portion of the electric wire 2.

[0045] With components 4 and 5 attached to the electric wire 2, the movement of the two divided parts 4a and 4b of the first component 4 in the direction away from each other (left and right) is restricted by the two protrusions 51 (annular parts 53) of the second component 5. Also, the movement of the two divided parts 5a and 5b of the second component 5 in the direction away from each other (front and back) is restricted by the two protrusions 41 (annular parts 43) of the first component 4. Furthermore, the movement of the two divided parts 4a and 4b in the direction away from each other is restricted by the locking part 410 and the locked part 411 interlocking with each other. Similarly, the movement of the two divided parts 5a and 5b in the direction away from each other is restricted by the locking part 510 and the locked part 511 interlocking with each other.

[0046] Furthermore, the downward movement of the first part 4 (in the direction away from the second part 5) is restricted by the upright surfaces 404 of the retaining portions 401 of the two divided parts 4a and 4b catching on the edges of the through holes 52 of the two protruding portions 51 (annular portions 53) of the second part 5. Also, the upward movement of the second part 5 (in the direction away from the first part 4) is restricted by the upright surfaces 504 of the retaining portions 501 of the two divided parts 5a and 5b catching on the edges of the through holes 42 of the two protruding portions 41 (annular portions 43) of the first part 4.

[0047] In this way, the first component 4 and the second component 5 interlock with each other, preventing them from detaching from the electric wire 2.

[0048] Furthermore, when inserting the two insertion portions 50 of the second part 5 into the through hole 42 of the annular portion 43 of the first part 4, the movement in the insertion direction is guided by the guide surface 505 of the retaining portion 501 of the two insertion portions 50 of the second part 5. Similarly, when inserting the two insertion portions 40 of the first part 4 into the through hole 52 of the annular portion 53 of the second part 5, the movement in the insertion direction is guided by the guide surface 405 of the retaining portion 401 of the two insertion portions 40 of the first part 4.

[0049] 2-5. Effects In the mounting device 1 of this embodiment described above, by attaching the first component 4 and the second component 5 to the electric wire 2, components 4 and 5 can be fixed to the electric wire 2 in a manner that makes removal difficult. Therefore, the mounting device 1 of this embodiment can prevent the current transformer 3 from being removed from the electric wire 2. As a result, the mounting device 1 of this embodiment can prevent the current transformer 3 from being attached to another electric wire 2, which could cause malfunctions.

[0050] Furthermore, in the mounting device 1 of this embodiment, in order to remove the current transformer 3 from the electric wire 2, it is necessary to cut a part of parts 4 and 5 with scissors or the like, or to apply a large load to cause plastic deformation, so that the appearance of parts 4 and 5 changes and the traces of removal can be confirmed.

[0051] Furthermore, in the mounting device 1 of this embodiment, the first component 4 is composed of multiple (two) divided parts 4a and 4b, and the second component 5 is composed of multiple (two) divided parts 5a and 5b. Therefore, with the mounting device 1 of this embodiment, components 4 and 5 can be attached to the electric wire 2 without disconnecting the electric wire 2 from the connection point such as a circuit breaker, making installation easier.

[0052] Furthermore, in the mounting device 1 of this embodiment, the first part 4 and the second part 5 have the same shape, making assembly errors less likely. Moreover, in the mounting device 1 of this embodiment, the two divided parts 4a and 4b that make up the first part 4 and the two divided parts 5a and 5b that make up the second part 5 all have the same shape, making assembly errors even less likely.

[0053] Furthermore, in the mounting device 1 of this embodiment, the retaining portions 401, 501 have multiple protruding portions 403, 503 aligned in the longitudinal direction of the insertion portions 40, 50 (the longitudinal direction of the electric wire 2). Therefore, in the mounting device 1 of this embodiment, the degree of deflection of the insertion portions 40, 50 can be adjusted by selecting the protruding portions 403, 503 to which the annular portions 43, 53 are hooked, allowing the insertion portions 40, 50 to be pressed against electric wires 2 of various thicknesses.

[0054] Furthermore, in the mounting device 1 of this embodiment, since projections 400 and 500 are provided on the insertion portions 40 and 50, the projections 400 and 500 can be bitten into the electric wire 2, thereby preventing the mounting positions of components 4 and 5 on the electric wire 2 from shifting due to the weight of the current transformer 3 or the like.

[0055] Furthermore, in the mounting device 1 of this embodiment, the two protrusions 41 of the two divided parts 4a and 4b of the first part 4 are connected by the interlocking of the locking part 410 and the locked part 411, making it difficult for the connection of the two protrusions 41 to be released. Similarly, in the mounting device 1 of this embodiment, the two protrusions 51 of the two divided parts 5a and 5b of the second part 5 are connected by the interlocking of the locking part 510 and the locked part 511, making it difficult for the connection of the two protrusions 51 to be released.

[0056] Furthermore, in the mounting device 1 of this embodiment, the current transformer 3 is held by the annular portion 43 (two protrusions 41) of the first part 4 and the annular portion 53 (two protrusions 51) of the second part 5. Therefore, it can be applied to a current transformer 3 having a hole 30 with a diameter smaller than the outer dimensions of the annular portions 43 and 53, making it highly versatile.

[0057] 3. Variant Next, we will describe some variations of the attachment device 1 described above. The variations shown below can be combined as appropriate.

[0058] The second component 5 has at least an annular portion 53 through which the electric wire 2 and the insertion portion 40 pass, and the annular portion 53 is configured to press and fix the insertion portion 40 against the electric wire 2. It is not limited to the structure shown in Figure 1. The second component 5 does not have to be the same shape as the first component 4.

[0059] For example, the second part 5 may be composed of an annular portion 53 made of a single plate material 53a that is annular in plan view, as shown in the modified examples in Figures 4A and 4B. The second part 5 does not have to have a configuration corresponding to the insertion portion 50.

[0060] The annular portion 53 (plate material 53a) may have the same shape as the annular portion 43 of the first component 4 (i.e., the two protruding portions 41 in an integrated state), or it may have a different shape from the annular portion 43. The annular portion 53 only needs to be configured to fix the insertion portion 40 by pressing it against the electric wire 2, and the diameter of the through hole 52 may be larger than the diameter of the through hole 42 of the annular portion 43.

[0061] In the modified examples shown in Figures 4A and 4B, the second component 5 can press the insertion portion 40 of the first component 4 against the electric wire 2 for fixation, thereby fixing components 4, 5 and the current transformer 3 to the electric wire 2 in a way that makes them difficult to remove.

[0062] Furthermore, the first component 4 is not limited to the structure shown in Figure 2A. The first component 4 may have only one insertion portion 40.

[0063] Furthermore, the first component 4 does not have to be composed of two divided parts 4a and 4b positioned to surround the electric wire 2. The first component 4 may be composed of three or more divided parts positioned to surround the electric wire 2. Also, the first component 4 may be composed of a single member. For example, the first component 4 may be provided in a shape that combines the two divided parts 4a and 4b. In this case, the first component 4 is attached to the electric wire 2 when it has been disconnected from a connection point such as a circuit breaker.

[0064] Similarly, the second component 5 does not have to consist of two segments 5a and 5b positioned to surround the electric wire 2. The second component 5 may consist of three or more segments positioned to surround the electric wire 2. Also, the second component 5 may consist of a single component. For example, the second component 5 may be provided in a shape that combines the two segments 5a and 5b. In this case, the second component 5 is attached to the electric wire 2 when it has been disconnected from a connection point such as a circuit breaker.

[0065] Furthermore, the insertion portion 40 does not need to have a projection 400. Also, the insertion portion 40 does not need to have a retaining portion 401. Also, the retaining portion 401 does not need to have multiple protruding portions 403, and may have only one protruding portion 403. Also, the retaining portion 401 does not need to be provided as a protrusion, and may be provided as a projection.

[0066] (Embodiment 2) Next, we will describe the attachment device 1 of Embodiment 2 shown in Figures 5, 6A, and 6B.

[0067] 1. Overview The mounting device 1 of Embodiment 2 is a mounting device for mounting a current transformer 3, which measures the current flowing through the electric wire 2 and has a hole 30 through which the electric wire 2 passes, to a part of the electric wire 2. The mounting device 1 comprises a mounting device body 6, a first cord-like portion 7 extending from the mounting device body 6 and forming a loop surrounding the electric wire 2, and a second cord-like portion 8 extending from the mounting device body 6 and forming a loop passing through the hole 30 of the current transformer 3. The mounting device body 6 is provided with a first fixing portion 9 for fixing a part of the first cord-like portion 7 to the mounting device body 6, and a second fixing portion 10 for fixing a part of the second cord-like portion 8 to the mounting device body 6.

[0068] With the above configuration, the mounting device 1 of Embodiment 2 forms a loop surrounding the electric wire 2 with the first cord-like portion 7, forms a loop passing through the hole 30 of the current transformer 3 with the second cord-like portion 8, and fixes parts of the cord-like portions 7 and 8 to the mounting device body 6 with the fixing portions 9 and 10. Therefore, the mounting device 1 of Embodiment 2 can prevent the cord-like portions 7 and 8 from coming off the mounting device body 6 and opening the loop, and can prevent the current transformer 3 from being removed from the electric wire 2.

[0069] 2.Details Next, the attachment device 1 of this embodiment will be described in more detail.

[0070] 2-1. Main body of the device The attachment body 6 is rectangular in shape. One end of the first cord-like portion 7 is connected to the attachment body 6 in the longitudinal direction, and one end of the second cord-like portion 8 is also connected to the attachment body 6 in the longitudinal direction. Of the attachment body 6, the surface to which one end of the first cord-like portion 7 is connected and the surface to which one end of the second cord-like portion 8 is connected in the longitudinal direction face opposite directions.

[0071] The attachment body 6 is provided with a first insertion hole 90 into which a portion of the first cord-like portion 7 is inserted, and a second insertion hole 100 into which a portion of the second cord-like portion 8 is inserted. Both insertion holes 90 and 100 penetrate the attachment body 6 in the same direction. The insertion holes 90 and 100 penetrate two surfaces other than the surface to which one longitudinal end of the cord-like portions 7 and 8 is connected.

[0072] A first claw 91 is provided at the opening of the first insertion hole 90, and a second claw 101 is provided at the opening of the second insertion hole 100. In this embodiment, the first insertion hole 90 and the first claw 91 constitute the first fixing part 9, and the second insertion hole 100 and the second claw 101 constitute the second fixing part 10.

[0073] 2-2. First cord-like section and second cord-like section The first cord-like portion 7 and the second cord-like portion 8 are each band-shaped. On one side in the thickness direction of the cord-like portions 7 and 8, numerous sawtooth-shaped grooves 70 and 80 are provided along the entire length in the longitudinal direction of the cord-like portions 7 and 8. Each of the numerous grooves 70 and 80 extends in a direction perpendicular to the longitudinal direction of the cord-like portions 7 and 8.

[0074] The first cord-like portion 7 protrudes from the attachment body 6 in one direction, and the second cord-like portion 8 protrudes from the attachment body 6 in a direction perpendicular to the aforementioned direction when viewed from the front. The protruding direction of the first cord-like portion 7 and the opening direction of the first insertion hole 90 are perpendicular. Also, the protruding direction of the second cord-like portion 8 and the opening direction of the second insertion hole 100 are perpendicular.

[0075] The cord-like portions 7 and 8 are passed through the insertion holes 90 and 100, and the grooves 70 and 80 catch on the claws 91 and 101, thereby restricting their movement in the direction of being pulled out of the insertion holes 90 and 100.

[0076] 2-3. Effects In the mounting device 1 of Embodiment 2 described above, the first cord-like portion 7 is passed through the first insertion hole 90, surrounding a part of the electric wire 2, and the second cord-like portion 8 is passed through the hole 30 of the current transformer 3 and then through the second insertion hole 100, so that the grooves 70 and 80 of the cord-like portions 7 and 8 catch on the claws 91 and 101. As a result, in the mounting device 1 of Embodiment 2, it is possible to prevent a part of the cord-like portions 7 and 8 from coming off the mounting device body 6 and the loop from opening.

[0077] Therefore, in the mounting device 1 of Embodiment 2, the cable-like portions 7 and 8 can be fixed to the electric wire 2 and the current transformer 3 in a manner that makes them difficult to remove. Since the cable-like portions 7 and 8 are connected via the mounting device body 6, the current transformer 3 can be indirectly fixed to a portion of the electric wire 2.

[0078] Furthermore, the attachment device 1 of Embodiment 2 has a structure that is like a combination of two cable ties, thus simplifying the structure.

[0079] Furthermore, in the attachment device 1 of Embodiment 2, the length of the cable-like parts 7 and 8 can be adjusted steplessly, making it easy to wrap the cable-like parts 7 and 8 around electric wires 2 of various thicknesses and current transformers 3 of various sizes.

[0080] Furthermore, in the attachment device 1 of Embodiment 2, the direction in which the first cord-like portion 7 extends from the attachment device body 6 and the direction in which the second cord-like portion 8 extends from the attachment device body 6 are perpendicular to each other. Therefore, in the attachment device 1 of Embodiment 2, the loop formed by the first cord-like portion 7 and the loop formed by the second cord-like portion 8 are less likely to interfere with each other, and the cord-like portions 7 and 8 are less likely to get in each other's way.

[0081] 3. Variant Next, we will describe some variations of the attachment device 1 of Embodiment 2 described above. The following variations can be combined as appropriate.

[0082] The direction in which the first cord-like portion 7 extends from the main body of the attachment device 6 and the direction in which the second cord-like portion 8 extends from the main body of the attachment device 6 do not have to be perpendicular; they may be parallel or intersecting.

[0083] Each of the cable-like portions 7 and 8 is not limited to a belt; they may also be other cable-like members such as wires.

[0084] The fixing parts 9 and 10 that secure a portion of the cord-like sections 7 and 8 to the main body of the attachment device 6 are not limited to the structure shown in Figure 6B, etc. (insertion holes 90 and 100 and claws 91 and 101), but may also be other structures that are difficult to remove.

[0085] (summary) As described above for the first embodiment and its modified form, the attachment (1) of the first embodiment of this disclosure has the following configuration.

[0086] In other words, the mounting device (1) of the first embodiment is a mounting device for mounting a current transformer (3) for measuring the current flowing through the electric wire (2), which has a hole (30) through which the electric wire (2) passes, to a part of the electric wire (2). The mounting device (1) comprises a first component (4) that is attached to a part of the electric wire (2), and a second component (5) that is combined with the first component (4) and holds the current transformer (3) between itself and the first component (4). The first component (4) has an insertion portion (40) that extends along the electric wire (2) and passes through the hole (30) of the current transformer (3), and a projection (41) that protrudes from the insertion portion (40) on the outside of the hole (30) toward the side opposite to the electric wire (2). The second component (5) has an annular portion (53) through which the electric wire (2) and the insertion portion (40) pass. The annular portion (53) is configured to be fixed to the electric wire (2) by pressing the insertion portion (40) against it.

[0087] In the mounting device (1) of the first embodiment having the above configuration, the annular portion (53) of the second component (5) can press the insertion portion (40) of the first component (4) against the electric wire (2) and fix it in place, thereby fixing the first component (4) and the second component (5) to the electric wire (2). Therefore, in the mounting device (1) of the first embodiment, it is possible to suppress the removal of the current transformer (3) held by the first component (4) and the second component (5).

[0088] Furthermore, as with the first embodiment and its modified form, the attachment (1) of the second embodiment additionally includes the following configuration in addition to the configuration of the first embodiment.

[0089] In other words, in the second embodiment of the mounting device (1), the first component (4) has multiple insertion portions (40). The annular portion (53) is configured to press and secure each of the multiple insertion portions (40) against the electric wire (2).

[0090] According to the second embodiment of the mounting device (1) having the above configuration, the insertion portion (40) can be pressed against the electric wire (2) from multiple directions, making it easy to fix the first component (4) and the second component (5) to electric wires (2) of various thicknesses, thus providing high versatility.

[0091] Furthermore, as with the first embodiment and its modified form, the attachment (1) of the third embodiment additionally includes the following configuration in addition to the configuration of the first or second embodiment.

[0092] In other words, in the third embodiment of the mounting device (1), the insertion portion (40) is provided with a projection (400) that bites into the electric wire (2).

[0093] According to the third embodiment of the mounting device (1) having the above configuration, the projection (400) of the insertion portion (40) can be bitten into the electric wire (2), thereby preventing the first component (4) and the second component (5) fixed to the electric wire (2) from shifting position due to the weight of the current transformer (3), etc.

[0094] Furthermore, as with the first embodiment and its modified form, the attachment (1) of the fourth embodiment additionally includes the following configuration in addition to the configuration of any one of the first to third embodiments.

[0095] In other words, in the attachment device (1) of the fourth embodiment, the insertion portion (40) is provided with a retaining portion (401) that restricts movement away from the protruding portion (41) of the annular portion (53).

[0096] According to the mounting device (1) of the fourth embodiment having the above configuration, the retaining portion (401) of the insertion portion (40) prevents the annular portion (53) from coming off the insertion portion (40), making it difficult to remove the current transformer (3).

[0097] Furthermore, as with the first embodiment and its modified form, the fifth embodiment (1) includes the following additional configuration in addition to the configuration of any one of the first to fourth embodiments.

[0098] In other words, in the fifth embodiment of the mounting device (1), the first component (4) is composed of a plurality of divided parts (4a, 4b) positioned to surround the electric wire (2).

[0099] According to the fifth embodiment of the mounting device (1) having the above configuration, the first component (4) can be attached to the electric wire (2) without removing the electric wire (2) from the connection point such as a circuit breaker, making it easy to attach the first component (4) to the electric wire (2).

[0100] Furthermore, as with the first embodiment and its modified form, the attachment (1) of the sixth embodiment additionally includes the following configuration in addition to the configuration of any one of the first to fourth embodiments.

[0101] In other words, in the sixth embodiment of the mounting device (1), the first component (4) and the second component (5) are each composed of a plurality of divided parts (4a, 4b, 5a, 5b) positioned to surround the electric wire (2).

[0102] According to the sixth embodiment of the mounting device (1) having the above configuration, the first component (4) and the second component (5) can be attached to the electric wire (2) without removing the electric wire (2) from the connection point such as a circuit breaker, making it easy to attach the first component (4) and the second component (5) to the electric wire (2).

[0103] Furthermore, as with the first embodiment and its modified form, the seventh embodiment (1) includes the following additional configuration in addition to the configuration of any one of the first to sixth embodiments.

[0104] In other words, in the seventh embodiment of the attachment (1), the second part (5) has the same shape as the first part (4).

[0105] According to the seventh embodiment of the mounting device (1) having the above configuration, since the first part (4) and the second part (5) are the same shape, assembly errors are less likely to occur, and it is easy to attach the first part (4) and the second part (5) to the electric wire (2).

[0106] Furthermore, as with the attachment device 1 of Embodiment 2 and its modified form described above, the attachment device (1) of the eighth embodiment has the following configuration.

[0107] In other words, the mounting device (1) of the eighth embodiment is a mounting device for mounting a current transformer (3) having a hole (30) through which the electric wire (2) passes and measuring the current flowing through the electric wire (2) to a part of the electric wire (2). The mounting device (1) comprises a mounting device body (6), a first cord-like part (7) extending from the mounting device body (6) and forming a loop surrounding the electric wire (2), and a second cord-like part (8) extending from the mounting device body (6) and forming a loop passing through the hole (30) of the current transformer (3). The mounting device body (6) is provided with a first fixing part (9) for fixing a part of the first cord-like part (7) to the mounting device body (6), and a second fixing part (10) for fixing a part of the second cord-like part (8) to the mounting device body (6).

[0108] With the above configuration, the mounting device (1) of the eighth embodiment can form a loop surrounding the electric wire (2) with the first cord-like portion (7) and a loop passing through the hole (30) of the current transformer (3) with the second cord-like portion (8). Furthermore, in the mounting device (1) of the eighth embodiment, a portion of the cord-like portions (7,8) can be fixed to the mounting device body (6) with the fixing portions (9,10). Therefore, in the mounting device (1) of the eighth embodiment, it is possible to prevent the cord-like portions (7,8) from coming off the mounting device body (6) and opening the loop, and to prevent the current transformer (3) from being removed from the electric wire (2).

[0109] Although the present disclosure has been described above based on the embodiments shown in the attached drawings, the present disclosure is not limited to the above embodiments, and appropriate design modifications are possible within the scope intended by the present disclosure. [Explanation of symbols]

[0110] 1 Current transformer fitting 2 electric wire 3 Current Transformer 30 holes 4. First part 4a split body 4b Divided body 40 Insertion part 41 Protrusion 400 protrusions 401 Retaining part 5 Second part 5a split body 5b split body 52 Through hole 53 Ring section 6. Main body of the device 7 First funicular part 8 Second funicular part 9 First fixing part 10 Second fixed part

Claims

1. A current transformer mounting device having a hole through which an electric wire passes and for mounting a current transformer for measuring the current flowing through the electric wire to a part of the electric wire, A first component attached to the aforementioned part of the electric wire, The system comprises a second component which is combined with the first component and holds the current transformer between itself and the first component, Each of the first and second components is composed of two divided parts positioned to surround the electric wire. Each of the two divided parts of the first component and each of the two divided parts of the second component has a through portion that extends along the electric wire and passes through the hole of the current transformer, and a semi-annular projection that protrudes from the through portion on the outside of the hole toward the opposite side of the electric wire, The two protrusions of the two divided parts of the first component interlock with each other to form an annular portion. The two protrusions of the two divided parts of the second component interlock with each other to form an annular portion. Inside the annular portion of each of the first and second parts, a through hole is provided through which the electric wire passes. The annular portion of the first component is configured to press and fix each of the two insertion portions of the two divided parts of the second component against the electric wire. The annular portion of the second component is configured to press and secure each of the two insertion portions of the two divided parts of the first component against the electric wire. Current transformer attachment device.

2. The insertion portion of each of the two divided parts of the first component and the insertion portion of each of the two divided parts of the second component are provided with a projection that bites into the electric wire, The current transformer mounting device according to claim 1.

3. Each of the two divided parts of the first part is provided with a retaining portion that restricts the annular portion of the second part from moving away from the protruding portion of the first part, Each of the two divided parts of the second component is provided with a retaining portion that restricts the annular portion of the first component from moving away from the protruding portion of the second component. The current transformer mounting device according to claim 1 or 2.

4. The second part has the same shape as the first part. A current transformer mounting device according to any one of claims 1 to 3.

Images