Electrical Connection Clip

Abstract

To provide an electrical connection clip capable of eliminating problems in handling lead wires.SOLUTION: An electrical connection clip comprises an insulation cylinder 40 with both ends open, a conductive clip body 10 whose base is mounted to an opening at one end of the insulation cylinder 40, and which is capable of opening / closing its tip, a lead wire 70 which extends form inside of the insulation cylinder 40 to outside of the insulation cylinder 40, a fuse holder 50 mounted to an opening at the other end of the insulation cylinder 40, a fuse 60 which is held by the fuse holder 50, and is connected in serial between the clip body 10 and the lead wire 70 through conductors 51a, 51b, and 52a of the fuse holder 50. The fuse holder 50 has: a container 51 for housing the fuse 60, the container 51 having an aperture and being fitted into the opening at the other end of the insulation cylinder 40 so that the aperture is exposed from the opening at the other end of the insulation cylinder 40; and a lid 52 detachably attached to the container 51 to block the aperture of the container 51. The base of the clip body 10 and the lead wire 70 are connected to the container 51.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an electrical connecting clip. [Background technology]

[0002] In order to inspect or monitor an electrical device such as an instrument transformer, the terminal of the electrical device is connected to a measuring device via wiring, and the measuring device measures the voltage or current. If a short circuit or ground fault occurs in the measuring device, it will have an adverse effect on the electrical device connected to the measuring device. For this reason, a fuse is provided in the middle of the wiring from the measuring device to the electrical device, so that if a short circuit or ground fault occurs, the fuse is blown to prevent excessive current from flowing to the electrical device. However, providing a fuse in the middle of the wiring increases the length of the wiring. In addition, the section from the terminal of the electrical device to the fuse is not electrically protected. Therefore, it is conceivable to connect a fuse-equipped alligator clip disclosed in Patent Documents 1 and 2, for example, to the end of the wiring, clamp the terminal of the electrical device with the alligator clip, and connect the terminal of the electrical device and the measuring device with the alligator clip and wiring.

[0003] In the techniques described in Patent Documents 1 and 2, a fuse holder is provided on the handle of an alligator clip, and a fuse is held in the fuse holder. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Utility Model Application Publication No. 50-3093 [Patent Document 2] Japanese Utility Model Application Publication No. 58-24980 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the techniques described in Patent Documents 1 and 2, since the wiring is connected to the lid of the fuse holder, there are the following problems in handling the lead wire. First, when the lid is grasped and removed, the lead wires get in the way, making it difficult to remove the lid. Second, there is a risk that the lead wires will be lost along with the removed lid. Third, when the lid is removed with the terminals of the electronic device clamped with the alligator clip, the lead wires get in the way, making it difficult to know where to place the lead wires and the lid, for example. Fourth, since the lead wires extend from the head of the lid in the extension direction of the clip piece of the alligator clip, the lead wires are prone to tangling, and when the lead wires are wrapped around the alligator clip and put away, there is also a risk that the end of the lead wires on the lid side will be forcibly bent and broken.

[0006] SUMMARY OF THE PRESENT DISCLOSURE The present invention has been made in consideration of the above circumstances, and has an object to provide an electrical connecting clip that can eliminate problems in handling lead wires. [Means for solving the problem]

[0007] In order to solve the above problems, an electrical connection clip comprises an insulating tube with both ends open, a conductive clip body having a base attached to the opening at one end of the insulating tube and a tip that can be opened and closed, a lead wire extending from inside the insulating tube to outside the insulating tube, a fuse holder attached to the opening at the other end of the insulating tube, and a fuse held by the fuse holder and connected in series between the clip body and the lead wire by a conductor of the fuse holder, the fuse holder having an opening extending from the opening at the other end of the insulating tube Stand out exposure do The clip has a container that is fitted into the opening at the other end of the insulating cylinder as shown in FIG. 1 and stores the fuse, and a lid that is removably attached to the container and covers the opening of the container, and the base of the clip body and the lead wire are connected to the container.

[0008] According to the above, since the base of the clip body and the lead wire are connected to the container of the fuse holder, when the lid of the fuse holder is removed from the container, the lead wire does not get in the way of removing the lid. Furthermore, even when the lid is removed from the container, the lead wire remains on the clip body side, so that the lead wire can be prevented from being lost. Even when the lid is removed while the clip body is fixed to a terminal or the like, there is no problem with where to put the lead wire. Furthermore, since the lead wire is not connected to the lid but to the container and extends from the inside to the outside of the insulating tube, when the lead wire is wound around the clip body and put away in the clip body, there is no need to significantly bend the part of the lead wire that comes out of the insulating tube, and breakage of the lead wire can be prevented. This eliminates the problem of handling the lead wires.

[0009] Preferably, the lead wire extends from an opening at one end of the insulating cylinder toward the tip of the clip body.

[0010] According to the above, when winding the lead wire around the clip body and storing it away in the clip body, there is no need to significantly bend the portion of the lead wire protruding from the insulating tube, and breakage of the lead wire can be prevented. Effect of the Invention

[0011] The present invention eliminates the problems associated with handling leads. [Brief description of the drawings]

[0012] [Figure 1] FIG. 2 is a side view of the electrical connection clip. [Diagram 2] FIG. 2 is a cross-sectional view of an electrical connecting clip. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, the embodiments of the present invention will be described with reference to the drawings. The embodiments described below are subject to various technically preferable limitations for carrying out the present invention, and the scope of the present invention is not limited to the following embodiments and illustrated examples.

[0014] [Electrical connection clip] FIG. 1 is a side view of the electrical connecting clip, and FIG. 2 is a cross-sectional view of the electrical connecting clip. This electrical connection clip clamps a terminal of an electrical device and electrically connects the terminal to another device (e.g., a measuring instrument). The electrical connection clip includes a clip body 10, an insulating cover 20, a connecting plug 30, an insulating tube 40, a fuse holder 50, a fuse 60, and a lead wire 70.

[0015] [Clip body] The clip body 10 is made of a metal material and is conductive. The clip body 10 is provided so that a portion (hereinafter referred to as a clamping portion) on the tip side from the intermediate portion can be opened and closed, and the clamping portion is biased to close by a spring 14. The clamping portion of the clip body 10 closes to clamp a terminal or the like. The portion of the clip body 10 on the base side from the intermediate portion is referred to as a base portion.

[0016] The clip body 10 has a first clip piece 11, a second clip piece 12, a pivot 13 and a spring 14.

[0017] An intermediate portion of the second clip piece 12 is rotatably connected to an intermediate portion of the first clip piece 11 by a pivot 13, and the portions of the first clip piece 11 and the second clip piece 12 from the pivot 13 to the tip side can be opened and closed by the pivot 13. The portions of the first clip piece 11 and the second clip piece 12 from the pivot 13 to the tip side correspond to the clamping portion of the clip body 10. The portions of the first clip piece 11 and the second clip piece 12 from the pivot 13 to the base end side correspond to the base of the clip body 10.

[0018] The spring 14 is a torsion spring. The spring 14 is wound around the pivot 13, and both ends of the spring 14 are abutted against the bases of the first clip piece 11 and the second clip piece 12 from the inside of these pieces. The spring 14 biases the first clip piece 11 and the second clip piece 12 in a direction in which the tip sides of these clip pieces 11, 12 open.

[0019] Saw-toothed teeth 11a, 12a are formed on inner portions facing each other at the tip sides of the first clip piece 11 and the second clip piece 12. When the tip sides of the clip pieces 11, 12 close, these teeth 11a, 12a mesh with each other.

[0020] At the base of the first clip piece 11, a cylindrical holding portion 11b is formed for elastically gripping a connecting plug 30, which will be described later.

[0021] [Insulating cover] The insulating cover 20 is made of a resin material and has insulating properties. The insulating cover 20 covers the clip body 10 so as to expose the inner portion of the clamping portion of the clip body 10, i.e., the teeth 11a and 12a of the clip pieces 11 and 12. The insulating cover 20 is provided so that its tip side portion opens and closes together with the clamping portion of the clip body 10. Here, the portion of the insulating cover 20 that covers the base portion of the clip body 10 is called a handle portion.

[0022] The insulating cover 20 has a first cover 21 and a second cover 22. The first cover 21 covers the first clip piece 11 except for a portion of the first clip piece 11 on the tip side facing the second clip piece 12, and is assembled integrally with the first clip piece 11. The second cover 22 covers the second clip piece 12 except for a portion of the second clip piece 12 on the tip side facing the first clip piece 11, and is assembled integrally with the second clip piece 12. The middle part of the second clip piece 12 is rotatably connected to the middle part of the first clip piece 11, so that the middle part of the second cover 22 is partially fitted into the middle part of the first cover 21, and the insulating cover 20 is provided so as to open and close together with the clip body 10. The base ends 21a, 22a of the first cover 21 and the second cover 22 become handles for pinching or gripping.

[0023] The base end 21a of the first cover 21 is formed with an insertion tube 21b that surrounds the cylindrical holding portion 11b.

[0024] [Connecting plug] The connecting plug 30 as a conductor is electrically connected to the clip body 10. Specifically, the connecting plug 30 is detachably fitted into the cylindrical holding portion 11b and is electrically connected to the first clip piece 11. A part of the connecting plug 30 protrudes from the insertion tube 21b toward a fuse holder 50 described below.

[0025] [Insulating tube] The insulating tube 40 is made of rubber or resin so as to have electrical insulation. The insulating tube 40 is provided in a cylindrical shape with both ends 41, 42 open. The cylindrical holding portion 11b, which is the base of the first clip piece 11, and the insertion tube 21b of the first cover 21 are fitted into the opening of one end 41 of the insulating tube 40, so that the opening elastically expands in diameter, and the insulating tube 40 tightens and fixes the insertion tube 21b by its elastic force. As a result, the base of the first clip piece 11 is attached to the opening of one end of the insulating tube 40. A retaining ring may be used to supplementarily tighten the insulating tube 40 to the insertion tube 21b from outside the insulating tube 40.

[0026] With the insertion tube 21 b fitted into the opening at one end 41 of the insulating tube 40 , the portion of the coupling plug 30 protruding from the insertion tube 21 b towards the fuse holder 50 is protected by the insulating tube 40 .

[0027] [fuse] The fuse 60 is a glass tube fuse having bases at both ends and an internal fuse wire connecting the bases.

[0028] [Fuse holder] The fuse holder 50 stores and holds the fuse 60, and also electrically connects the fuse 60 in series between the connecting plug 30 and the lead wire 70 by the conductors 51a, 51b, and 52a of the fuse holder 50. The fuse holder 50 is attached to the opening at the other end 42 of the insulating tube 40. Since the connecting plug 30 is connected to the cylindrical holding portion 11b that serves as the base of the first clip piece 11, the fuse 60 is electrically connected in series between the cylindrical holding portion 11b and the lead wire 70 by the conductors 51a, 51b, and 52a of the fuse holder 50.

[0029] The fuse holder 50 includes a container 51 and a cover 52 . The container 51 has an internal storage space in which the fuse 60 is stored, and an opening at the top that leads to the storage space. The container 51 is fitted from its bottom into the opening at the other end 42 of the insulating tube 40, and the opening formed at the top of the container 51 is exposed to the outside of the insulating tube 40 from the opening at the other end 42 of the insulating tube 40. Therefore, the fuse 60 can be inserted into the storage space of the container 51 from the opening of the container 51. Also, the opening at the other end 42 of the insulating tube 40 is elastically expanded in diameter by the container 51, and the insulating tube 40 tightens and fixes the container 51 by its elastic force. A retaining ring may be used to supplementarily tighten the insulating tube 40 to the container 51 from the outside of the insulating tube 40.

[0030] When the fuse 60 is housed in the container 51, a base at one end of the fuse 60 comes into contact with a first conductor 51a provided in the container 51. The first conductor 51a is connected to the connecting plug 30.

[0031] Lid 52 has a cavity inside into which fuse 60 is inserted, and has an opening at the bottom that leads to the cavity. A male thread is formed on the outer periphery of lid 52, and a female thread is formed on the inner periphery of container 51. With the opening at the bottom of lid 52 facing the opening at the top of container 51, the male thread of lid 52 and the female thread of container 51 fit together, making lid 52 detachable from container 51.

[0032] When the fuse 60 is inserted into the lid 52, the base at the other end of the fuse 60 comes into contact with a second conductor 52a provided on the lid 52. When the lid 52 is attached to the container 51, the second conductor 52a of the lid 52 comes into contact with a third conductor 51b provided on the container 51. This third conductor 51b is connected to a lead wire 70. Therefore, the lead wire 70, the third conductor 51b, the second conductor 52a, the fuse 60, the first conductor 51a, the connecting plug 30, and the clip body 10 are connected in series in this order.

[0033] [Lead wire] The lead wire 70 is a flexible vinyl-insulated electric wire, which is a metal wire covered with an insulating sheath. The lead wire 70 is inserted into the insulating tube 40 from one end 41 thereof and connected to the third conductor 51b of the container 51 of the fuse holder 50. The lead wire 70 extends from one end 41 thereof to the outside of the insulating tube 40 and is wired to another device (e.g., a measuring instrument). The lead wire 70 extends from one end 41 of the insulating tube 40 toward the tip of the clip body 10.

[0034] [How to use] The lid 52 of the fuse holder 50 is removed from the container 51. Then, the fuse 60 is stored in the container 51, and the lid 52 is attached to the container 51. Next, the terminals of an electrical device such as an instrument transformer are clamped by the clip body 10, and the lead wires 70 are connected to a measuring instrument. Then, the voltage or current of the electrical device is measured by the measuring instrument.

[0035] When an excessive current occurs due to a short circuit, a ground fault, or the like, the fuse wire of the fuse 60 is cut off, thereby protecting the electrical equipment and measuring instruments.

[0036] The use of the electrical connection clip is not limited to the electrical connection between an instrument transformer and a measuring instrument, so long as it is used to electrically connect two objects (for example, an electrical device, a terminal, a wire, etc.).

[0037] [Advantageous Effects] (1) Since the fuse holder 50 is provided near the clip body 10, the length of the current path from the fuse 60 to the clamping portion of the clip body 10 is short, minimizing the length of the section that is not electrically protected. In addition, the current path from the terminal of the electrical device to the measuring instrument can be shortened.

[0038] (2) Since the base of the first clip piece 11 is connected to the first conductor 51a of the container 51 via the connecting plug 30 and the lead wire 70 is connected to the third conductor 51b of the container 51, the lead wire 70 does not interfere with the removal operation of the lid body 52 when the lid body 52 is removed from the container 51.

[0039] (3) Even when the lid body 52 is removed from the container 51, the lead wire 70 remains on the clip body 10 side, so that it is possible to prevent the lead wire 70 from being lost. In addition, even when the lid body 52 is removed from the container 51 with the terminal of the electrical device being clamped by the clip body 10, there is no problem in finding a place to put the lead wire 70.

[0040] (4) The lead wire 70 is connected to the third conductor 51b of the container 51, rather than to the lid 52. And since the lead wire 70 extends from the inside to the outside of the insulating tube 40 toward the tip of the clip body 10, when the lead wire 70 is wound around the clip body 10 and stored in the clip body 10, there is no need to significantly bend the portion of the lead wire 70 protruding from the insulating tube 40, which makes it possible to prevent breakage of the lead wire 70.

[0041] (5) Since the connecting plug 30 is used, the first conductor 51a of the container 51 and the clip body 10 can be easily electrically connected to each other.

[0042] (6) Since the connecting plug 30 is hidden inside the insulating tube 40, it is possible to prevent a short circuit or the like through the connecting plug 30. In addition, the connecting plug 30 is protected by the insulating tube 40. The connection portion between the lead wire 70 and the third conductor 51b of the container 51 is also protected by the insulating tube 40. [Explanation of symbols]

[0043] 10…Clip body 40…Insulating tube 50…Fuse holder 51...Container 52…Cover body 51a, 51b, 52a...conductor 60…Fuse 70…Lead wire

Claims

1. An insulating tube having openings at both ends; a conductive clip body having a base attached to an opening at one end of the insulating tube and a tip that is openable and closable; a lead wire extending from the inside of the insulating cylinder to the outside of the insulating cylinder; a fuse holder attached to the opening at the other end of the insulating cylinder; a fuse held in the fuse holder and connected in series between the clip body and the lead wire by a conductor of the fuse holder; The fuse holder, a container having an opening, the opening being fitted into the opening at the other end of the insulating cylinder so that the opening protrudes and is exposed from the opening at the other end of the insulating cylinder, and the fuse is housed in the container; A lid body that is removably attached to the container and closes an opening of the container, The base of the clip body and the lead wire are connected to the container. Electrical connection clip.

2. The lead wire extends from an opening at one end of the insulating cylinder toward the tip of the clip body.

2. The electrical connection clip of claim 1.

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