JP6018806B2 - clip - Google Patents

Description

  The present invention relates to a clip for causing a member to be bitten to bite, and in particular, to obtain necessary data from the side of the covered electric wire which is a member to be bitten using an on-site measuring instrument. It is the technique regarding the clip which can be used suitably when making it hold.

  Field measuring instruments that are used for electrical measurement work by bringing them to the measurement site include testers, insulation resistance meters, ground resistance meters, phase detectors, voltage detectors, and clamp ammeters that are prepared according to the purpose. and so on.

  Among these, electrostatic induction detectors such as phase detectors and voltage detectors are provided with sensor electrodes as detectors for detecting electric charge by electrostatic induction from an AC circuit as a charged body to be inspected. In particular, the phase detector is used as a detector for displaying the phase sequence (phase rotation) of an AC three-phase circuit when operating or installing a three-phase device such as an electric motor, a generator, or a relay. .

  That is, for example, when operating a three-phase dielectric motor such as a fan or pump, the phase sequence of the AC three-phase circuit is detected in advance using a phase detector to know in advance whether or not the correct connection has been made. Can prevent injuries due to reverse rotation in advance.

  In this case, the phase sequence of the AC three-phase circuit by the phase detector is such that each of the covered electric wires constituted by three has a clip included in the phase detector described in Non-Patent Document 1 below, for example. It will be detected under the condition.

"2012 Electrical Measuring Instrument General Catalog (page 103)" issued by Hioki Electric Co., Ltd.

  The above-described clip shown in Non-Patent Document 1 has a non-contact type structure that has a shed shape that covers the outside of a sensor electrode that is a detector so as to be surrounded by an insulating synthetic resin case, and the entirety thereof is provided. Is formed.

  In this case, the clip has a built-in torsion coil spring that urges the upper and lower biting portions provided on the front end side of the synthetic resin case to be in a normally closed state. The opening part of the upper and lower parts provided in the opening operation part is opened and the biting part is fed so as to sandwich the covered electric wire, and then the opening part with respect to the opening operation part is canceled to cause the covering electric wire to hold the holding part Will be able to.

  However, since the clip shown in Non-Patent Document 1 is intended to be attached to the covered wire by feeding the biting portion from the direction perpendicular to the length direction of the covered wire and simply clamping it, There was an inconvenience that it was easy to come off when an unexpected external force was applied to the operation unit side.

  In view of the above-described problems of the prior art, the present invention provides a clip that is not easily removed even when an unexpected external force is applied to the opening operation piece side after being attached to an object to be held such as a covered electric wire. The purpose is to do.

The present invention has been made to achieve the above-mentioned object, and each of the front end side is a biting piece part and the rear end side is an opening operation piece part, and is connected to each other at a substantially central position so as to be rotatable. Consists of one clip piece made of an insulating resin material and the other clip piece integrally disposed opposite each other by biasing the biting piece portion in the normally closed direction by interposing a spring material on the support shaft In addition, at least one of the clip pieces in these clip pieces is protruded so as to be able to be hooked on the holding target member side having a substantially circular cross section , and the clip piece side is A concave curved surface is provided on the outer surface of the object to be bitten so as to contact the surface of the object to be bitten and prevent its sliding when it is inclined in an oblique direction with respect to the length direction of the object to be bitten by receiving an external force. includes a radical 92, the fang the bitten piece mutually when was bitten in the clamping and target member The the most important feature that allowed the application of the bitten target member hooked allowed to fall off difficult and stable bitten force.

  In this case, the tusks can be provided separately on both distal ends of one of the biting pieces and the other of the biting pieces in a positional relationship adjacent to each other when closed. Moreover, the said fang part can also be protrudingly provided in the at least any one side in the one end side and the other end side in the front end side of the said biting piece part. Furthermore, the said fang part may protrude in a pair by the one end side and the other end side of the front end side of the said biting piece part.

Further, the concave curved surface is desirably a curvature determined in relation to the outer diameter of the clamping and the target member. Further, the concave curved surface may be provided with a sliding prevention portion for increasing the friction coefficient. Further, it is desirable to provide serrated teeth on the opposing surfaces of the biting portions.

  Further, in the clip piece portion of at least one of the clip pieces, a detector for detecting electric charge by electrostatic induction is incorporated, and one end thereof is connected to the detector. The cord can be pulled out from the open end side of the opening operation piece.

According to the first aspect of the present invention, the clip held by the biting target member hooks the tooth part protruding from the tip side of at least one of the biting piece parts to the biting target member side. In addition to being able to contact the concave curved surface provided on the outer surface of the tusks when the external force is applied to incline in the oblique direction with respect to the length direction of the object to be bitten, the sliding is prevented. Thus, the movement in which the clip side is inclined in the oblique direction can be effectively prevented. As a result, it is possible to improve the effect of preventing the clip from falling off the member to be held.

  According to the invention of claim 2, the fang portions are provided separately on both distal end sides of the one biting piece portion and the other biting piece portion under the positional relationship of being adjacent to each other when closed. Therefore, it can be held in a state where it is more difficult to come off from the side to be held.

  According to invention of Claim 3, since the fang part is protrudingly provided by the at least any one side in the one end side and other end side of the front-end | tip of a biting piece part, it is a fang part with respect to a biting object member. Can be placed closer together and stably held.

  According to the invention of claim 4, since the fang portion protrudes as a pair on one end side and the other end side on the distal end side of the biting piece portion, it is more stable with respect to the biting target member. The biting force can be exerted.

According to the invention of claim 5 , since the concave curved surface is formed with a curvature determined by the relationship with the outer diameter of the object to be bitten, a wider surface contact area is ensured by the relationship with the object to be held. Therefore, it is possible to effectively prevent the movement inclined further in the oblique direction. Accordingly, it is possible to further improve the effect of preventing the clip from falling off the member to be held.

According to the invention of claim 6 , since the slip prevention member for further increasing the coefficient of friction is additionally formed on the concave curved surface, it tends to tilt in the oblique direction with respect to the length direction of the member to be held at the time of biting. When the concave curved surface is brought into surface contact with a high frictional force to prevent the sliding, it is possible to more reliably prevent the tilting movement. As a result, it is possible to further improve the effect of preventing the clip from falling off the member to be held.

According to invention of Claim 7 , since the sawtooth-shaped tooth part is provided in the mutually opposing surface of the occlusion parts, the occlusion target member is firmly held between these tooth parts. Thereby, the occlusion state with respect to the occlusion target member can be made more reliable.

According to the eighth aspect of the present invention, the detector for detecting the electric charge by electrostatic induction is built in the holding portion, and the cord having one end connected to the detector opens the opening operation portion. Since it is pulled out from the end side, it can be suitably used as a non-contact type clip for an electrostatic induction detector such as a phase detector.

The front view which abbreviate | omits one part and shows the basic composition of this invention. The longitudinal cross-sectional view of FIG. Main part perspective view showing a contact Keru bitten piece under the open state in FIG. Explanatory drawing shown in the state which made the biting target object hold the biting piece part shown in FIG. Explanatory drawing which shows the condition at the time of external force being applied to the opening operation piece part side under the occlusion state shown in FIG. The principal part perspective view which shows a biting piece part in the open state about the 1st example of this invention. Explanatory drawing which shows the 1st example shown in FIG. The principal part perspective view which shows a biting piece part in the open state about the 2nd example of this invention.

Referring to the drawings in the embodiments concrete to the present invention. First, according to the basic configuration of the present invention shown in FIG. 1 and FIG. 2, the front end side is set as the biting piece portions 13 and 23, the rear end side is set as the opening operation piece portions 15 and 25, and the length direction is substantially the same. A spring material 33 composed of a torsion coil spring 34 or the like is interposed on a support shaft 43 that is rotatably connected at the center portion, and the biting pieces 13 and 23 are biased in a normally closed direction so as to be integrally opposed. The clip 11 as a whole is composed of one clip piece 12 and the other clip piece 22 made of an insulating resin material. In addition, the code | symbols 20 and 30 in a figure show the barrier part which prevents that a finger is located in the biting piece part 13 and 23 side.

  In this case, each of the one clip piece 12 and the other clip piece 22 is formed by being divided into two in the vertical direction. It is formed so that it can be secured.

  In addition, the one clip piece 12 located on the upper side in FIG. 1 includes shaft support holes 16 disposed opposite to both side surfaces located in a substantially central portion that is a position in the vicinity of the front side of the barrier portion 20, and also holds the bite. A tooth portion 17 provided in a sawtooth shape on a slightly recessed surface that is a surface facing the biting piece portion 23 of the other clip piece 22 in the one piece portion 13 and provided on the finger contact surface side of the opening operation piece portion 15. And a plurality of rows of stepped portions 18 are formed.

  Further, the other clip piece 22 positioned on the lower side in FIG. 1 includes a pair of bearing portions 26 and 26 disposed opposite to both side surfaces positioned substantially at the center thereof. Each bearing portion 26 includes a through hole 26 a provided at a position facing the shaft support hole 16 when combined with the other clip piece 12. The front side between the pair of bearing portions 26 and 26 is covered with a shielding portion 26b.

  Further, the other clip piece 22 has a tooth portion 27 provided in a sawtooth shape on a slightly recessed surface which is a surface facing the biting piece portion 13 of the one clip piece 12 in the biting piece portion 23, and The opening operation piece 25 includes a plurality of rows of step portions 28 provided on the finger contact surface side.

  The torsion coil spring 34 serving as the spring member 33 includes a coiled portion 35 through which the support shaft 43 is inserted, and one side that is pulled out from one end side of the coiled portion 35 and hooked to one clip piece 12 side. The latching arm part 36 and the other-side latching arm part 37 which is similarly pulled out from the other end side of the coil part 35 and hooked on the other clip piece 22 side are formed.

  For this reason, both the clip pieces 12 and 22 are used as the clip 11 by combining them integrally through the support shaft 43 under the state where the biting piece portions 13 and 23 are urged toward the normally closed direction. Will be able to.

  Moreover, the clip 11 having such a configuration is directed to one end side and the other end side on the tip end side of the biting piece portion 13 in one clip piece 12, and toward the other clip piece 22 side as shown in FIG. And a pair of left and right fang portions 14, 14.

  Further, the other clip piece 22 has a biting piece portion having a tooth portion 24 protruding so as to be positioned between the tooth portions 14 and 14 when closed, and a recess 31 for receiving each tooth portion 14 when closed. 23 on the tip side.

Therefore, the clip 11 is covered with a pair of fang portions 14 and 14 in one clip piece 12 and a fang portion 24 in the other clip piece 22 so as to have a substantially circular cross section as shown in FIG. It is possible to apply a stable biting force that is difficult to remove from the biting target member 51 such as the electric wire 52. Further, when the clip 11 is held by the holding target member 51 as shown in FIG. 4, the clip 11 does not come off even if an external force acts in the direction shown as A in FIG. 5, and is shown as B in FIG. even if an external force acts in the direction hardly out of those slopes are.

  Moreover, as apparent from FIGS. 1 and 2, a detecting element 48 such as a sensor electrode for detecting an electric charge by electrostatic induction is incorporated in the holding piece portion 23 of the other clip piece 22. A cord 49 having one end connected to the detector 48 is pulled out from the open end 25 a side of the opening operation piece 25. The detector 48 can be incorporated only in the biting piece portion 23 of one clip piece 12 or in the biting piece portions 13 and 23 of both clip pieces 12 and 22.

Figure 6 shows a first example of the present invention, the basic configuration shown in FIG. 3 is only different in specific structure of the pair of fangs 14, 14, the basic structure of the clip 11 Since this is not different from FIG. 3 , the corresponding parts are denoted by the same reference numerals and description thereof is omitted.

That is, in the first example of the present invention shown in FIG. 6, the length direction of the biting target member 51 such as the covered electric wire 52 on the outer surface of each tooth part 14 included in one clip piece 12 when the bite is held. On the other hand, a concave curved surface 21 that comes into surface contact when tilted in an oblique direction is provided.

  In this case, since each concave curved surface 21 needs to secure a surface contact area as wide as possible, the concave curved surface 21 is formed by giving a curvature that is determined in relation to a specific outer diameter of the biting target member 51 such as the covered electric wire 52. desirable.

Figure 8 shows a second embodiment of the present invention, which is also FIG. 3 is only different in specific structure of the pair of fangs 14, 14, the basic structure of the clip 11 is FIG. since 3 and not different, and each corresponding portion thereof is omitted are designated by the same reference numerals.

That is, in the 2nd example of this invention shown in FIG. 8, the concave curved surface 21 similar to a 1st example is provided in the outer surface of each tooth part 14 with which one clip piece 12 is provided. In addition, on the surface of each concave curved surface 21, a sliding prevention member 45 for increasing the friction coefficient is disposed. In this case, the anti-sliding member 45 can be formed by applying a rough texture, applying a fine unevenness such as a satin finish, or applying a saw-toothed knurled surface, for example, rubber or urethane. A material having a high friction coefficient such as a resin material can be formed by adhering to the concave curved surface 21.

Next, will be described the operation and effect of the present invention, when not in use of the clip 11, as shown in FIGS. 1 and 2, the coil torsion and the clip piece 12 and the other clip piece 22 of the hand is It is urged | biased by spring materials 33, such as the spring 34, and the biting piece parts 13 and 23 are in the closed state.

  On the other hand, in use, the operator opposes the opening operation piece portion 15 of one clip piece 12 and the opening operation piece portion 25 of the other clip piece 22 against the urging force of a spring material 33 such as a torsion coil spring 34. By pushing, each biting piece part 13 and 23 can be expanded to a required opening degree.

  With respect to the occlusion target member 51 such as the covered electric wire 52, the occlusion pieces 13 and 23 are fed from the direction substantially orthogonal to the length direction in the expanded state as described above. Further, by releasing the pushing force on the opening operation pieces 15 and 25, the biting pieces 13 and 23 can be held as shown in FIG.

At this time, one of the clip pieces 12 are a pair of left and right are provided on a clamping and piece 13 radical 92 14 and 14, so as to be along the circumferential direction of the bite lifting target member 51 as is apparent from FIG. 4 Can be arranged.

For this reason, even if the clip 11 held by the biting target member 51 may be inclined obliquely with respect to the length direction of the biting target member 51 as shown in FIG. since the radical 92 14 can be hooked on the clamping and the target member 51 side can be allowed to bitten under hard off state.

  Further, when the serrated portion 17 is arranged on the slightly recessed surface of the holding portion 13 in the clip 11 and the sawtooth portion 27 is arranged on the slightly recessed surface of the holding portion 23, respectively, The biting state with respect to the biting target member 51 can be made more reliable by holding the biting target member 51 with the serrated portion 17 and the serrated portion 27 so as to wrap the biting target member 51 with friction. .

Further, the clip 11 shown in FIG. 6 which is the first example of the present invention is recessed on the outer side surface 14a of each of the pair of left and right tusks 14, 14 provided on the biting piece 13 of one clip piece 12. Since the curved surface 21 is provided, the concave curved surface 21 is brought into surface contact with the longitudinal direction of the biting target member 51 when biting and the sliding is prevented by sliding the concave curved surface 21 in the diagonal direction. Tilt movement can be prevented. As a result, it is possible to improve the effect of preventing the clip 11 from falling off the biting target member 51.

  In addition, when the concave curved surface 21 is formed with a curvature determined by the relationship with the outer diameter of the biting target member 51, a wider surface contact area is secured by the relationship with the biting target member 51. Further, it is possible to effectively prevent a tilting movement. Accordingly, it is possible to further improve the effect of preventing the clip 11 from falling off the biting target member 51.

Further, in the clip 11 shown in FIG. 8 which is the second example of the present invention, the slip prevention member 45 for further increasing the friction coefficient is additionally formed on the concave curved surface 21 of the second example. By tilting the concave curved surface 21 in a state where a high frictional force is involved when attempting to incline in an oblique direction with respect to the length direction of the biting target member 51, the sliding is prevented by causing the concave surface 21 to contact the surface. It is possible to more reliably prevent the movement of tilting. As a result, it is possible to further improve the effect of preventing the clip 11 from falling off the biting target member 51.

  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 fang portions 14 and 24 are separately provided on both distal end sides of the one biting piece portion 13 and the other biting piece portion 23 in a positional relationship adjacent to each other at the time of closing. You can also. Further, the fang portion is not as the fang portion 14 on the side of the holding piece 13 of the one clip piece 12 as shown in FIG. 1, but on the side of the holding piece portion 23 of the other clip piece 22 as shown in FIG. It can also be provided as a fang portion 24. In addition, the fang portion 14 or 24 has one configuration at an appropriate position including the central portion on the distal end side of the biting piece portions 13 and 23, or at least one of the one end side and the other end side of the distal end. It is also possible to project it under a single configuration biased to the side. 6 to 8 show examples in which the concave curved surface 21 is formed on the fang portion 14 of one clip piece 12, the fangs of the other clip piece 22 shown in FIG. A concave curved surface can also be formed in the part 24 under the same configuration. Further, the spring member 34 may be a leaf spring other than the torsion coil spring 34 as long as it can urge the biting portions 13 and 23 in the normally closed direction.

  As long as the clip according to the present invention is used for holding by various members to be held having a substantially circular cross section, it can be used for appropriate applications other than the clip for the electrostatic induction detector including the phase detector. Can be provided.

DESCRIPTION OF SYMBOLS 11 Clip 12 Clip piece 13 Occlusion piece part 13a Opposite surface 14 Fang part 15 Opening operation piece part 16 Axle support hole 17 Tooth part 18 Step part 19 Space part 20 Barrier part 21 Concave surface 22 Clip piece 23 Clamping piece part 23a Opposition Surface 24 Fang portion 25 Opening operation piece portion 25a Open end 26 Bearing portion 26a Through hole 26b Shield portion 27 Tooth portion 28 Step portion 29 Space portion 30 Barrier portion 31 Recessed portion 33 Spring material 34 Torsion coil spring 35 Coiled portion 36 One side hook Stop arm portion 37 Stop arm portion on the other side 43 Support shaft 45 Anti-sliding member 48 Detector 49 Code 51 Occlusion target member 52 Covered wire

Claims (8)

Each of the end pieces is a biting piece, the rear end is an opening operation piece, and a spring material is interposed on a support shaft that is pivotally connected to each other at a substantially central position. It is composed of one clip piece and the other clip piece made of an insulating resin material that is urged toward the normally closed direction and integrally disposed opposite to each other.
At least one of the clip pieces in these clip pieces protrudes from the distal end side so as to be able to be hooked on the object to be held having a substantially circular cross section , and the clip piece side receives an external force. A fang portion provided with a concave curved surface on its outer surface that contacts the surface of the object to be held and prevents its sliding when it is inclined in an oblique direction with respect to the length direction of the object to be held. With
When the biting piece parts are held by the biting target member, the fang part is hooked on the biting target member to enable a stable biting force that is difficult to drop off. And clip. The said fang part was each comprised at the both-ends side of one said biting piece part and the other said biting piece part by the positional relationship adjacent to each other at the time of the closing. clip. The clip according to claim 1 or 2, wherein the fang portion protrudes from at least one side of one end side and the other end side of the tip end side of the biting piece portion. The clip according to any one of claims 1 to 3, wherein the fang portion is provided as a pair on one end side and the other end side on the distal end side of the biting piece portion. The clip according to any one of claims 1 to 4, wherein the concave curved surface is formed with a curvature determined by a relationship with an outer diameter of the member to be held. Wherein the concave surface, the clip according to any one of claims 1 to 5 were provided with sliding blocking member for increasing the friction coefficient. The clip according to any one of claims 1 to 6 , wherein serrated teeth are separately provided on opposing surfaces of the biting pieces . In the clip piece portion of at least one of the clip pieces, a detector for detecting electric charge by electrostatic induction is incorporated, and a cord having one end connected to the detector is provided. The clip according to any one of claims 1 to 7, wherein the clip is drawn from an open end side of the opening operation piece .

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