JP2013253819A - Clip - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clip capable of securing a safety space when being detached from an active electric body.SOLUTION: A clip comprises an upper clip piece 12 and a lower clip piece 22, which are made of an insulation resin material, and have holding piece parts 13 and 23 at tip sides thereof and opening operation piece parts 15 and 25 at rear end sides thereof, respectively, and which are integrally arranged facing each other and are rotatably connected to a support shaft 55 by interposing a spring material therein to urge both the holding piece parts 13 and 23 in a normally-closed direction. At least the one holding piece part 23 includes a built-in detector for detecting electric charge by electrostatic induction, and a code 58 having one end connected to the detector, which is drawn to the outside. The clip further comprises insulating inclination reduction means 41 provided at a side of a facing portion 23 of the lower clip piece 22 facing another active electric body 61 that is positioned below the active electric body 61 when an active electric body 61 is caught with both the holding piece parts 13 and 23, to allow a side of the opening operation piece part 25 to separate from a side of the active electric body 61 by being brought into contact with the other active electric body 61 to be supported therewith.

Description

  TECHNICAL FIELD The present invention relates to a clip that can be used suitably when trying to obtain necessary data by biting one of a plurality of active bodies arranged in the vertical direction, such as a bus bar in a switchboard. It is.

  Some of the field measuring instruments that are used to carry out electrical measurement work by bringing them into the measurement field include phase detectors that have sensor electrodes as detectors for detecting charges from an AC circuit as a charged body by electrostatic induction. There are electrostatic induction detectors such as voltage detectors.

  This type of electrostatic induction detector is usually an active body such as a bus bar in which an AC circuit as a charged body to be inspected is arranged in a vertical direction in a switchboard. Necessary data can be taken in a state where a clip having a structure as shown in FIG. .

JP 2006-30141 A

  FIG. 6 shows the clip shown in FIG. 3 of Patent Document 1 again. The upper clip piece 2 and the lower clip piece 4 are provided via a support shaft 9 having a torsion coil spring 8 interposed therebetween. As a result, the curved holding portions 3 and 5 that are opened and closed to hold the AC electric circuit as a charged body are normally closed and are pivotally supported in an integral manner, and conductive inside the curved holding portions 3 and 5. The entire clip 1 is configured by including a detector 6 composed of a layer 7. That is, the clip 1 is provided with a non-contact type structure having a shed shape in which the outer side of the detector is covered with an insulating synthetic resin case so as to be covered, and the entirety thereof is formed.

  In this case, the clip 1 incorporates a torsion coil spring 8 that urges the curved holding portions 3 and 5 to be in a normally closed state. After the holding portions 3 and 5 are fed, the bending operation portions 3 and 5 can be held by the live body by eliminating the opening operation.

  However, when the clip 1 shown in Patent Document 1 is used, when the upper and lower pair of curved holding portions 3 and 5 are bitten by a certain active body located above, the clip 1 including the lead cord is included. The base end side for the opening operation due to the weight on the side becomes a steeply inclined state and is pulled down.

  As a result, the base end side for the opening operation cannot secure a sufficient safety space with the other active material positioned below, and the clip 1 is removed from the active material side by opening. When doing so, there is a disadvantage that the possibility that the finger is brought into contact with the live body is increased accordingly.

  In view of the above-described problems of the prior art, the present invention provides an inclination relaxation means on the clip side, thereby opening the opening operation piece to remove the clip from the active body side. It is an object of the present invention to provide a clip that can secure a sufficient safety space between the two.

The present invention has been made to achieve the above-mentioned object, and supports each of which is pivotably connected to each other at a substantially central position with the front end side as a clamping piece portion and the rear end side as an opening operation piece portion. An upper clip piece and a lower clip piece made of an insulating resin material that are integrally disposed to oppose each other in a normally closed direction by interposing a spring material on a shaft, In a clip in which a detector for detecting electric charge by electric induction is built in at least one of the sandwiching pieces, and a cord having one end connected to the detector is pulled out to the outside, When the holding piece portions are bitten with each other, on the facing portion side of the lower clip piece facing the other active material located below the holding piece portion, the opening operation piece is abutted and supported by the active material. Insulating inclination relaxation means for separating the part side away from the active material side The most important feature that was.

  The said inclination relaxation means can be formed as an attachment arrange | positioned detachably with respect to the said lower clip piece side. In this case, the attachment includes a pair of left and right side plate portions and a bottom plate portion that is spanned between and supported by the live body, and is formed on the inner surface of each side plate portion on the lower side. It is preferable that the clip pieces are formed with protrusions that can be partially fitted into the grooves cut in the length direction of both outer side surfaces of the clip pieces. Further, the attachment may be provided with a support column on its inner side surface that can support the facing portion of the lower clip piece when the projection is fitted into the groove of the lower clip piece. it can.

  In addition, the bottom plate portion preferably includes an inclined surface that is inclined forward toward the holding piece portion when fitted to the lower clip piece, but when fitted to the lower clip piece. May be provided with a flat surface positioned substantially parallel to the facing part.

  Furthermore, the inclination relaxation means may be formed as a front inclined surface portion integrally provided at the facing portion by being inclined forward in the direction of the sandwiching piece portion.

  In addition, a latching protrusion that protrudes toward the sandwiching piece portion of the lower clip piece on the leading end side of the sandwiching piece portion of the upper clip piece so as to be hooked to any one of the live members. It is desirable to provide.

  According to the first aspect of the present invention, the lower clip piece is provided with the insulating inclination reducing means for separating the opening operation piece part side from the active body side. Therefore, the lower clip piece is inclined when being held by the active body. It is possible to stably support at three points including the means, and further, it is possible to secure a safe space through the inclination relaxing means, so that the safety of the work can be enhanced accordingly.

  According to the invention of claim 2, since the inclination relaxation means is formed by the attachment, in the work site where it is not necessary to secure a safety space, the attachment can be removed and the measurement work can be performed, and various different types can be performed. By preparing the attachment, it is possible to selectively use an attachment that is more suitable for the work environment in the field.

  According to the invention of claim 3, since the attachment includes the protrusions that can be partially fitted into the grooves cut in the length direction of both outer side surfaces of the lower clip piece, the fitting position By adjusting to the left and right direction, it is possible to more appropriately cope with the field environment including the position of the live electric body.

  According to invention of Claim 4, since the attachment is provided with the support | pillar part which can support the facing part of a lower clip piece, the attachment state is supported by supporting the lower clip piece side by this support | pillar part. It can be made more stable.

  According to the invention of claim 5, the attachment is formed so as to be an inclined surface inclined forward toward the holding piece portion when the bottom plate portion is fitted to the lower clip piece. A wider safety space can be ensured by adjusting the contact position of the live member on the inclined surface.

  According to the invention of claim 6, the attachment is formed so that the bottom plate portion is a flat surface located substantially parallel to the facing portion when the bottom plate portion is fitted to the lower clip piece. The configuration can be further simplified.

  According to the invention of claim 7, since the inclination relaxing means is formed as a front inclined surface portion integrally provided in the facing portion by being inclined forward in the direction of the sandwiching piece portion, In contrast, the possibility of loss can be eliminated, and the member configuration of the entire clip can be simplified to contribute to cost reduction effectively.

  According to the eighth aspect of the present invention, the clamping piece portion of the upper clip piece includes the latching protrusion that protrudes toward the clamping piece portion of the lower clip piece on the tip side thereof. By holding the protrusion on the live body, the occlusal state can be made more stable.

The side view which shows the 1st example of this invention in the state made to hold | grip to the live electric body. It is explanatory drawing which shows the specific shape of the attachment in FIG. 1, (a) is the whole perspective view, (b) is the top view, (c) shows the side view at the time of fitting, respectively. It is explanatory drawing which shows the relationship between the clip and attachment in the example shown in FIG. 1, (a) of which is a side view with the attachment removed, (b) is the first attachment state of the attachment, (c ) Shows a second attachment state of the attachment, and (d) shows a third attachment state of the attachment as side views. The whole perspective view which shows the other example of an attachment. The side view which shows the 1st example of this invention in the state made to hold | grip to the live electric body. Explanatory drawing which re-displayed the clip of the half state shown by FIG. 3 of patent document 1. FIG.

  Embodiments of the present invention will be specifically described below with reference to the drawings. First, according to FIG. 1, the first example of the present invention is such that the front end side is the sandwiching piece portions 13 and 23, the rear end side is the opening operation piece portions 15 and 25, and they are substantially at the center position. An upper side made of an insulating resin material that is integrally opposed to each other by interposing a spring material (not shown) on a pivot 55 that is rotatably connected to urge the holding pieces 13 and 23 in a normally closed direction. The clip piece 12 and the lower clip piece 22 are configured.

  Further, the upper clip piece 12 and the lower clip piece 22 have a detector (not shown) for detecting electric charge by electrostatic induction incorporated in each of the sandwiching piece portions 13 and 23 or on either side. Further, the entire clip 11 is formed by pulling out a cord 58 having one end connected to the detector to the outside. In addition, the code | symbols 21 and 31 in a figure show the barrier part which prevents that a finger is located in the clamping piece part 13 and 23 side.

  In this case, each of the upper clip piece 12 and the lower clip piece 22 is formed by being divided into two in the vertical direction, and a space portion (not shown) is secured inside when they are integrated with each other facing each other. It is formed so that it can be.

  Further, the upper clip piece 12 includes a shaft support hole 16 disposed opposite to both side surfaces located in a substantially central portion that is a position near the front side of the barrier portion 21, and the lower clip piece 22 in the holding piece portion 13. Tooth portions 14 arranged in a sawtooth shape on the slightly concave surface 13a facing the sandwiching piece portion 23, and a plurality of rows of step portions 17 provided on the finger contact surface side of the opening operation piece portion 15. And is formed.

  The lower clip piece 22 includes a pair of bearing portions 26 disposed opposite to both side surfaces located at the substantially central portion thereof. Each bearing portion 26 includes a through hole (not shown) provided at a position facing the shaft support hole 16 when combined with the upper clip piece 12. The front side between the pair of bearing portions 26 is covered with a shielding portion 26a.

  In addition, the lower clip piece 22 includes a tooth portion 24 arranged in a serrated shape on a slightly recessed surface that is a surface 23a facing the sandwiching piece portion 13 of the upper clip piece 12 in the sandwiching piece portion 23, and an open portion. The operation piece portion 25 is provided with a plurality of rows of step portions 27 provided on the finger contact surface side.

  The torsion coil spring as the spring material is not shown, but, like the torsion coil spring 8 shown in FIG. 6, the coiled portion through which the support shaft 55 is inserted and the one end side of the coiled portion. One side latching arm portion that is pulled out and latched on the upper clip piece 12 side, and another side latching arm portion that is similarly pulled out from the other end side of the coil portion and latched on the lower clip piece 22 side It is formed with.

  For this reason, the upper clip piece 12 and the lower clip piece 22 are combined together via the support shaft 55 under a state in which the sandwiching piece portions 13 and 23 are urged toward the normally closed direction. It can be used as the clip 11.

  In addition, the clip 11 having such a configuration is provided, for example, as a pair on the left and right sides in the direction of the lower clip piece 22 as shown in FIG. A latching protrusion 18 is provided.

  Further, the lower clip piece 22 has a front tooth portion 28 projecting so as to be positioned between the latching projections 18 when closed, and a recess 29 for receiving the latching projection 18 when closed. Provided on the tip side.

  For this reason, the clip 11 is located above any one of the plurality of active bodies 61 arranged in the vertical direction with a predetermined interval, in the example shown in FIG. 1, on the upper end edge 61 a of the uppermost live body 61. By engaging the latching protrusion 18 provided in the clamping piece portion 13 of the clip piece 12 and the tooth portion 24 provided in the clamping piece portion 23 of the lower clip piece 22 on the lower end edge 61b side, It will be able to hold on to it.

  Moreover, the lower clip piece 22 faces the other active material located below the active material 61 when it is bitten by the active material 61, that is, the facing portion 32 facing the active material 61 located in the middle stage in the example shown in FIG. On the side, there is provided an insulative slack mitigating means 41 that is brought into contact with and supported by the live body 61 and separates the opening operation piece 23 side from the live body 61 side.

  FIG. 2 is an explanatory view showing an example in which the inclination relaxing means 41 is formed as an attachment 42 that is detachably arranged on the lower clip piece 22 side. The attachment 42 in this example is a pair of left and right side plate portions. 43 and 44 and a bottom plate portion 45 that is bridged between the both side plate portions 43 and 44 and is supported by the active body 61.

  Further, the attachment 42 has a protrusion 46 which can be partially fitted into the groove portion 30 of an appropriate length, which is engraved in the length direction of both outer side surfaces of the lower clip piece 22, of each side plate portion 43, 44. Provided on the inside surface. That is, according to FIGS. 2 (a) and 2 (b), each of the protrusions 46 protrudes along the length direction at the substantially central portion of the inner upper edge 43a, 44a of each side plate portion 43, 44. It is installed.

  Further, the attachment 42 includes a support column portion 47 on its inner surface that can support the facing portion 32 of the lower clip piece 22 when the protrusions 46 are fitted in the respective groove portions 30 of the lower clip piece 22. Yes. More specifically, below the rear end position of each protrusion 46, a column portion 47 is integrally formed separately from the inner surface of the bottom plate portion 45 to a substantially intermediate height of the inner surfaces of the side plate portions 43 and 44. When the attachment 11 is fitted to the lower clip piece 22, the facing portion 32 can be supported by the support 47.

  FIG. 4 is an explanatory view showing another example of the case where the slack mitigating means 41 is formed as an attachment 42 that is detachably disposed on the lower clip piece 22 side. The attachment 42 in this example is a rectangular shape. A pair of left and right side plate portions 43, 44 exhibiting the above and a bottom plate portion 45 that is spanned between the side plate portions 43, 44 and supported by the active body 61 is formed in a substantially U shape. 2 is different from the example shown in FIG. 2 in that the bottom plate portion 45 cannot be inclined when fitted to the lower clip piece 22 side. For this reason, the side plate portions 43 and 44 of the support column portion 47 are different. The ratio of the height to the height of is also slightly higher.

  FIG. 5 is an explanatory view showing a second example of the present invention. Like the first example shown in FIG. 1, the leading end side is the clamping piece portions 13 and 23, and the rear end side is the opening operation piece. A spring material (not shown) is interposed on a support shaft 55 that is pivotally connected to each other at the substantially central position as the portions 15 and 25, and the sandwiching piece portions 13 and 23 are urged toward the normally closed direction to be integrated. The upper clip piece 12 and the lower clip piece 22 are made of an insulating resin material and are opposed to each other.

  The inclination relaxation means 32 in this example is formed as a front inclined surface portion 50 that is integrally provided at the facing portion 32 of the lower clip piece 22 by being inclined forward in the direction of the sandwiching piece portion 23 of the lower clip piece 22. The rest of the configuration is the same as that of the first example shown in FIG.

  Next, the operation and effect of the present invention will be described with reference to the first example shown in FIG. 1. When the clip 11 is not used, the one-side clip piece 12 and the other-side clip piece 22 are spring materials such as torsion coil springs. The sandwiching pieces 13 and 23 are closed with each other.

  In use, the pressing pieces 15 and 25 are pushed down against the biasing force of the spring material while the holding pieces 13 and 23 in the open state are sent to the live body 61 side, and the pressing force is eliminated. Thus, as shown in FIG. 1, the hooking protrusion 18 provided on the holding piece portion 13 of the upper clip piece 12 is provided on the upper end edge 61 a of the live body 61, and the tooth portion provided on the holding piece portion 23 of the lower clip piece 22. 24 can be held by the active body 61 under the state where the 24 is hooked on the lower edge 61b.

  At this time, the clip 11 is pulled down so that the opening operation piece 25 is steeply inclined in the direction indicated by A in FIG. 1 due to the weight of the clip 1 including the cord 58 drawn from the opening operation piece 25 side. As a result, the opening operation piece portion 25 comes close to the lower side of the live conductor 61, in the illustrated example, the live conductor 61 located at the lowest level.

  However, in this case, the lower clip piece 22 contacts the active member 61 on the side of the facing portion 32 facing the other active member located below, in the example shown in FIG. An attachment attached by following the procedure from FIG. 3 (a) to FIG. 3 (b) as an insulating inclination relaxation means 41 that is supported in contact and the opening operation piece 23 side is separated from the live electrical conductor 61 side. 42, the bottom plate portion 45 of the attachment 42 is brought into contact with and supported by the live body 61, and the opening operation piece 23 side is pulled away from the live body 51 side. As shown in FIG. The safety space shown can be ensured.

  Therefore, the operator can safely remove the clip 11 from the live body 61 side by opening the opening operation pieces 15 and 25 after finishing the measurement work. In this case, the attachment 42 is fitted under the fitting pattern as shown in FIGS. 3B to 3D, for example, in relation to the position of the groove 30 provided in the lower clip piece 22. By wearing it, the safety space can be changed and secured. Even if the attachment 42 shown in FIG. 4 is used, a safe space can be secured.

  Moreover, according to the illustrated example, the attachment 42 is also provided with the support portion 47, so that when it is fitted to the lower clip piece 22, the support portion 47 faces the side portion 32 of the lower clip piece 22. Since it can be supported, the operation can be continued with the fitting state made more stable.

  On the other hand, the operation and effect of the second example shown in FIG. 5 will be described. The inclination relaxation means 41 faces the lower clip piece portion 23 in a state of being inclined forward toward the holding piece portion 23. Since the front inclined surface portion 50 is formed integrally with the portion 32, the front inclined surface portion 50 is brought into contact with and supported by a live body 61 located in the middle in the illustrated example, whereby the opening operation piece portion 25 is formed. By pulling the side away from the live body 61 side, it is possible to secure a safety space shown as an elliptical broken line encircled region in FIG.

  Therefore, also in the second example, after the operator finishes the measurement work, the operator can open the opening operation pieces 15 and 25 and remove the clip 11 from the live body 61 side safely. Moreover, since the inclination relaxation means 41 in the second example is integrally provided as the front inclined surface portion 50 in the facing portion 32 of the lower clip piece portion 23, the number of member configurations can be reduced by that amount, and the cost can be reduced or lost. Prevention can be realized more reliably.

  The present invention has been described with reference to the illustrated example, and the specific embodiment thereof is not limited to this. For example, the upper clip piece 12 may not be provided with the latching protrusion 18 on the distal end side 13 of the sandwich piece. Further, the attachment 42 may be provided with only the protrusion 46 and not the support 47. Further, the attachment 42 can be detachably attached to the lower clip piece 22 through an adhesive layer or an adhesive layer that can be re-applied, such as a double-sided tape or an adhesive gel sheet, instead of fitting the projection 46 into the groove portion 30. You may make it attach.

DESCRIPTION OF SYMBOLS 11 Clip 12 Upper clip piece 13 Clamping piece part 13a Opposing surface 14 Tooth part 15 Opening operation piece part 16 Shaft support hole 17 Step part 18 Latching projection 21 Barrier part 22 Lower clip piece 23 Clamping piece part 23a Opposing surface 24 Tooth Part 25 opening operation piece part 26 bearing part 26a shielding part 27 step part 28 front tooth part 29 recessed part 30 groove part 31 barrier part 32 facing part 41 inclination relaxation means 42 attachment 43, 44 side plate part 43a, 44a inner side face 45 bottom plate part 46 protrusion 47 Supporting part 50 Front inclined surface part 55 Support shaft 58 Cord 61 Active body 61a Upper edge 61a Lower edge

Claims (8)

Each of the clamping pieces is normally connected to a support shaft that is pivotally connected to each other at a substantially central position with the leading end side as a clamping piece portion and the rear end side as an opening operation piece portion. An upper clip piece and a lower clip piece made of an insulating resin material that are urged toward the closing direction and integrally opposed to each other, and at least one of the sandwiching pieces is configured to detect a charge by electrostatic induction. In a clip that is built in the unit and that has a cord with one end connected to the detector and pulled out to the outside,
When the live piece is held between the holding pieces, the lower clip piece facing the other live piece located below the live piece is in contact with and supported by the live piece. A clip characterized by comprising an insulative slack mitigating means for separating the opening operation piece part side from the live electrical conductor side. The clip according to claim 1, wherein the inclination relaxing means is an attachment that is detachably disposed on the lower clip one side. The attachment includes a pair of left and right side plate portions and a bottom plate portion that is spanned between and supported by the live body, and is formed on the inner side surface of each side plate portion on the lower clip piece. The clip according to claim 2, further comprising a protrusion that can be partially fitted into a groove portion that is cut in a length direction of both outer side surfaces. The said attachment equips the inner surface with the support | pillar part which can support the said facing part of a lower clip piece when the said protrusion is made to fit in the said groove part of the said lower clip piece. clip. The clip according to claim 3 or 4, wherein the bottom plate portion includes an inclined surface that is inclined forward toward the holding piece portion when the bottom plate portion is fitted to the lower clip piece. The clip according to claim 3 or 4, wherein the bottom plate portion includes a flat surface positioned substantially parallel to the facing portion when fitted to the lower clip piece. 2. The clip according to claim 1, wherein the inclination relaxing means is a front inclined surface portion that is integrally provided at the facing portion by being inclined forward in the direction of the sandwiching piece portion. The clamping piece portion of the upper clip piece includes a latching protrusion that protrudes toward the clamping piece portion of the lower clip piece on the tip side of the clamping piece portion so as to be hooked to any one of the live members. Item 8. The clip according to any one of Items 1 to 7.

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