JP5274366B2 - Seat clip - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To maintain a pinching part in an open state, by overcoming the problem that a work arm may slip toward the support point for rotation of a sheet clip, or a dislocation occurs between the work arm and a grip when the grip of the sheet clip is gripped using the work arm of an insulated plier. <P>SOLUTION: A clip body 201a which is a main subject includes a so-called clothespins structure. Each of a pair of bases 202 constituting a grip 205 is provided with a slot-like grip groove 208 over the entire width of the base 202. The grip groove 208 is fitted with a work arm 102 of an insulated plier 101 that approaches the grip 205 along the axial direction of a rotating support point 203. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a sheet clip for sandwiching a protective insulating sheet used in an indirect hot wire work method.

  2. Description of the Related Art Conventionally, work (hot line work) such as maintenance, repair, and replacement of power pole peripheral devices including a transformer or the like is performed while a high-voltage current of 6600 volts is applied to an electric wire. For the live work, a direct live work method and an indirect live work method are adopted. The direct hot wire work method is a work method in which work is performed while wearing protective equipment such as insulating gloves and rubber boots. The indirect hot wire work method is a work method in which an indirect hot wire work method tool such as an insulating Yatco is used to work while being in contact with the current-carrying part at a distance of 60 centimeters or more from the current-carrying part such as an electric wire being energized. As described above, in any construction method, the occurrence of an electric shock accident or the like in the hot wire work is prevented.

JP 2001-27209 A

  FIG. 9 is a perspective view showing a state in which the electric sheet 401 is covered with the insulating sheet 301. In the indirect hot wire work method, for example, there is a risk that a ground fault will occur when an insulating rod touches the electric wire 401. Therefore, in order to prevent an accident, as shown in FIG. 9, the work is performed by covering the charging portion of the electric wire 401 with a protective insulating sheet 301. The insulating sheet 301 is sandwiched between seat clips S having a clothespin structure and fixed to the electric wire 401. At this time, in the indirect hot wire work method, the work of attaching the sheet clip S to the insulating sheet 301 is performed using an insulating jacket to ensure the safety of the worker.

  FIG. 10 is a front view showing an example of a conventional sheet clip S. As shown in FIG. The seat clip S has a pair of opposite bases S1. One end side of the base S1 forms a sandwiching portion S3 for sandwiching the insulating sheet. The clamping part S3 is urged in the closing direction by the spring body S5. The other end side of the base body S1 is a gripping part S4 for opening and closing the clamping part S3, and is widened to the end. When the gripping portion S4 is closed, the base body S1 rotates around the rotation fulcrum S2, and the closed clamping portion S3 opens apart and opens. Thus, the sheet clip S can be attached to the insulating sheet.

  In general, in the seat clip S, the separation distance of the end portion S4a of the gripping portion S4 is longer than the opening distance LS of the work arm 102 of the insulating jacket 101. Therefore, the work arm 102 cannot grip the grip portion S4 from the grip portion S4 side (left side in FIG. 10) of the seat clip S in a direction orthogonal to the axial direction of the rotation fulcrum S2. Therefore, the work arm 102 approaches the grip portion S4 in the axial direction of the rotation fulcrum S2 and grips the grip portion S4. However, since the gripping portion S4 is widened toward the end, the work arm 102 slides toward the rotation fulcrum S2 as shown in FIG. Therefore, it is very difficult to maintain the sandwiching portion S3 in an open state.

  Patent Document 1 discloses a sheet clip different from the sheet clip S shown in FIG. 10 (in Patent Document 1, sheet scissors for indirect method). The seat clip disclosed in Patent Literature 1 is configured such that the gripping portions (in Patent Literature 1, the upper and lower grips 5 and 6) are parallel to each other. In this case, the work arm can also grip the gripping part by approaching the gripping part in the axial direction of the rotation fulcrum (plastic fixing pin 7 in Patent Document 1). The gripping part can also be gripped by approaching the gripping part in a direction orthogonal to the axial direction of the moving fulcrum. However, since the gripping portions are parallel to each other, the work arm is easily displaced from the gripping portion only by the contact of the sheet clip holding the gripping portion with an object. If misalignment occurs, the seat clip may fall off the work arm. If the seat clip falls off, it is naturally not possible to keep the clamping part open.

  In other words, if you try to grip the grip part of the seat clip with the work arm of the insulated Yatco, the work arm may slide toward the pivot point of the seat clip or the work arm and the grip part may be misaligned. Thus, the holding portion cannot be maintained in an open state. For this reason, the workability when the sheet clip is attached to the insulating sheet by using the insulating Yatco is very bad.

  An object of the present invention is to improve the workability of the work of attaching a sheet clip to an insulating sheet in an indirect hot wire working method using an insulating Yatco.

  The seat clip of the present invention includes a pair of bases that are pivotally connected around a pivot point, and includes a sandwiching portion for sandwiching an insulating sheet on one end of the base, and the other end of the base A clip body that is provided with a widened gripping part for opening and closing the clamping part on the side, and is biased in a direction to close the clamping part by a biasing part, and each of the pair of bases forming the gripping part And a groove-shaped gripping portion groove into which a work arm of an insulating jacket approaching in the axial direction of the rotation fulcrum of the base body is fitted in order to grip the gripping portion.

  The seat clip of the present invention viewed from another side has a pair of bases that are pivotably connected around a pivot point, and includes a sandwiching portion for sandwiching an insulating sheet at one end of the base. A clip body provided on the other end side of the base for opening and closing the clamping part, and biased in a direction to close the clamping part by an urging part; Each of the pair of bases includes a gripping groove provided in a groove shape over the entire width, having a groove width longer than 25 millimeters and a distance between each other shorter than 55 millimeters.

  According to the present invention, since the work arm of the insulating jacket fits into the grip portion groove provided in the grip portion, the work arm slides toward the rotation fulcrum of the seat clip or the work arm and the seat clip are misaligned. Can be prevented, and the workability of attaching the seat clip to the insulating sheet can be improved.

It is a perspective view which shows a seat clip. It is the side view which looked at the seat clip of Drawing 1 from the A direction. It is a front view which shows an insulating Yatco. It is a front view which shows a seat clip with an insulating Yatco. It is sectional drawing which shows the state which the arm end of a work arm passes the holding part groove | channel of a sheet clip. It is a perspective view which shows the state which the work arm is fitting in the holding part groove | channel. It is sectional drawing which shows the state which the working arm is fitting in the holding part groove | channel. It is a front view which shows the state which the arm end of a work arm is holding the holding part of a sheet clip. It is a perspective view which shows the state which coat | covered the insulating sheet on the electric wire. It is a front view which shows an example of the conventional seat clip.

  An embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is a perspective view showing a seat clip 201. The sheet clip 201 is mainly composed of a clip main body 201a. The clip main body 201a has a pair of bases 202 facing each other. The pair of base bodies 202 are connected so as to be rotatable about a rotation fulcrum 203. As an example, the material of the base 202 is a resin that does not conduct electricity. A portion of the base body 202 having a tapered beak shape and closed is a holding portion 204 for holding the insulating sheet. The other end of the base body 202 that is spread out is a grip portion 205 for opening and closing the clamping portion 204.

  In the seat clip 201, a main body 206 b that is a coil portion of the torsion spring 206 forms a rotation fulcrum 203. That is, the pair of base bodies 202 overlap with each other with the main body 206b interposed therebetween. The sandwiching portion 204 is urged in the closing direction by a torsion spring end 206 a as an urging portion that is both ends of the torsion spring 206. When an external force in the closing direction is applied to the gripping part 205 that is spread out, the base body 202 rotates around the rotation fulcrum 203, and the closed clamping part 204 opens apart and opens. When the open clamping unit 204 is positioned at a position where the insulating sheet (see FIG. 9) is sandwiched and the external force applied to the gripping unit 205 is released, the clamping unit 204 is closed and the insulating sheet is clamped.

  A plurality of sandwiching groove 207 is formed in the opposing portions of the pair of bases 202 constituting the sandwiching section 204. The clamping part groove | channel 207 is a groove | channel for the electric wire which has covered the insulating sheet fitting, when the clamping part 204 clamps an insulating sheet.

  Each of the pair of base bodies 202 constituting the grip portion 205 is provided with a groove-shaped grip portion groove 208 over the entire width. A bottom portion 208 a of the grip portion groove 208 is raised and curved in a convex shape in the width direction of the base body 202.

  Since the grip portion 205 is provided with the grip portion groove 208, the portions of the base body 202 that face each other with the grip portion groove 208 interposed therebetween are the first protrusion portion 210 and the second protrusion portion 211 that protrude higher than the bottom portion 208 a. ing. The first projecting portion 210 near the sandwiching portion 204 has a triangular shape inclined toward the sandwiching portion 204. As for the 2nd protrusion part 211 located in the edge part of the holding part 205, the upper part 211a is mutually parallel.

  FIG. 2 is a side view of the seat clip 201 of FIG. 1 viewed from the A direction. Opposing portions of the pair of base bodies 202 constituting the grip portion 205 are recessed in a concave shape. A plurality of rib plates 209 are provided integrally with the base body 202 in this recess. The four rib plates 209 included in one base 202 are positioned between the five rib plates 209 included in the other base 202. Therefore, even when the pair of base bodies 202 forming the grip portion 205 is closed, the rib plates 209 do not interfere with each other.

  Next, the insulating jacket 101 used when attaching the sheet clip 201 to the insulating sheet will be described.

  FIG. 3 is a front view showing the insulating jacket 101. The insulating Yatco 101 has a curved arm-shaped work arm 102 (work arm 102a, work arm 102b) on one end side. One work arm 102b rotates about the support shaft 108 and opens and closes with respect to the other work arm 102a. The work arm 102 holds the object by closing. The distal end portion of the work arm 102 (hereinafter referred to as the arm end 103) is bent so as to warp. When the work arm 102 is closed, the arm end 103 comes into contact. The insulated Yatco 101 includes an operation unit 104 that opens and closes the work arm 102. The operation unit 104 includes a handle 105 that is rotatable on the rear end side of the insulating jacket 101. The handle 105 is urged in the direction of spreading by a coil spring 107 attached to the support shaft 105a. One end of a connecting rod 106 extending toward the work arm 102 is connected to the handle 105. The other end of the connecting rod 106 is connected to the end of the work arm 102b opposite to the arm end 103. When the handle 105 is grasped and pushed against the biasing force of the coil spring 107, the connecting rod 106 is pulled. As a result, the end of the work arm 102b opposite to the arm end 103 is pulled by the connecting rod 106, and the work arm 102b is closed with respect to the other work arm 102a.

  FIG. 4 is a front view showing the seat clip 201 together with the insulating yoke 101. The sheet clip 201 shown in FIG. 4 is in a state where no external force in the closing direction is applied to the grip portion 205 (hereinafter referred to as a normal clip state). In the normal clip state, as described above, the clamping unit 204 is closed by the biasing force of the torsion spring 206. In the normal clip state, as shown in FIG. 4, the bottom portions 208 a of the grip portion grooves 208 are parallel to each other, and the upper portions 211 a of the second protrusions 211 are also parallel to each other. The separation distance of the bottom 208a of the grip portion groove 208 in the normal clip state is defined as a “separation distance L1”. Further, the separation distance of the upper portion 211a of the second projecting portion 211 in the normal clip state is defined as a “separation distance L2”.

  The handle 105 (not shown in FIG. 4) of the insulated Yatco 101 shown in FIG. 4 is in an unfolded state (hereinafter referred to as a normal Yatco state). In the normal state, the work arm 102b is rotated by the end opposite to the arm end 103 being pushed by the connecting rod 106, and the work arm 102 is opened to the maximum to form an opening. . The distance of the opening of the arm end 103 in the normal state is defined as “opening distance LS”. Further, a corner portion at the arm end 103 forming the opening distance LS is defined as an arm end angle 103a.

  As shown in FIG. 4, the separation distance L1 and the separation distance L2 are shorter than the opening distance LS. The opening distance LS is 58 mm as an example, and 55 mm as another example. Therefore, the separation distance L1 and the separation distance L2 are shorter than at least 55 mm which is the opening distance LS.

  Further, the groove width L3 of the gripping portion groove 208 is longer than the distance LT (see FIG. 6) of the thickness of the work arm 102 of the insulating jacket 101. As an example, the groove width L3 is longer than 25 millimeters. However, the groove width L3 of the grip portion groove 208 is long enough to fit the arm end 103 of the insulating yoke 101 (see FIG. 8).

  Next, the case where the work arm 102 of the insulating Yatco 101 grips the grip portion 205 of the seat clip 201 will be described. First, the case where the work arm 102 approaches the grip portion 205 in the axial direction of the rotation fulcrum 203 will be described with reference to FIGS. In this case, after the arm end 103 of the work arm 102 passes through the grip portion groove 208, the work arm 102 is fitted into the grip portion groove 208.

  FIG. 5 is a cross-sectional view showing a state where the arm end 103 of the work arm 102 passes through the grip portion groove 208 of the seat clip 201. At this time, as shown in FIG. 5, the arm end angle 103a of the arm end 103 passes over the bottom portion 208a. Here, since the bottom portion 208a is curved in a convex shape in the width direction of the base body 202, the arm end angle 103a passing over the bottom portion 208a does not continue to contact the bottom portion 208a, but only near the apex of the bottom portion 208a. Contact. Therefore, the contact resistance between the arm end angle 103a and the bottom portion 208a is relatively small.

  As shown in FIG. 5, when the arm end 103 has passed through the grip portion groove 208, the handle 105 of the insulating jacket 101 is next gripped. As a result, the work arm 102 of the insulating Yatco 101 fits into the grip portion groove 208.

  FIG. 6 is a perspective view showing a state in which the work arm 102 is fitted in the grip portion groove 208. The movement of the work arm 102 fitted in the grip portion groove 208 is restricted and is prevented from sliding toward the rotation fulcrum 203. Therefore, it becomes easy to maintain the clamping part 204 in the opened state. Even if the seat clip 201 comes into contact with something while the work arm 102 is fitted in the grip portion groove 208, the work arm 102 is not displaced with respect to the seat clip 201, and the work arm 102 The sheet clip 201 is prevented from falling off from. In this way, when the insulating jacket 101 is used, it can be expected that the workability of attaching the sheet clip 201 to the insulating sheet is extremely good.

  FIG. 7 is a cross-sectional view showing a state where the work arm 102 is fitted in the grip portion groove 208. The bottom 208a of the gripper groove 208 and the work arm 102 are both curved. Therefore, the feeling of fit between the work arm 102 and the bottom 208a is improved, and the displacement of the work arm 102 of the insulating Yatco 101 is less likely to occur.

  By the way, as mentioned above, the mutually opposing site | part in a pair of base | substrate 202 which comprises the holding part 205 is dented in concave shape. Further, the grip portion groove 208 is thinner than other portions of the base body 202. Therefore, the portion of the base body 202 in the grip portion groove 208 is relatively fragile, and it is conceivable that the work arm 102 is damaged by the force of gripping the bottom portion 208a. However, since the bottom 208a and the work arm 102 are both curved to improve the fit, the gripping force of the work arm 102 is not easily concentrated on one place of the bottom 208a and is easily dispersed. This prevents the base 202 from being damaged by the force that the work arm 102 grips.

  A plurality of rib plates 209 are provided in the recesses of the base body 202. A plurality of rib plates 209 (four on one side of the gripping part 205 and five on the other side) are also located on the back side of the gripping part groove 208 (see FIG. 1). The portion 208 is reinforced by the rib plate 209. That is, the rib plate 209 prevents the base body 202 from being damaged by the force gripped by the work arm 102.

  Next, a case where the work arm 102 approaches the gripper 205 from the gripper 205 side (left side in FIG. 4) in a direction orthogonal to the axial direction of the rotation fulcrum 203 will be described. In this case, the arm end 103 of the work arm 102 grips the upper portion 211a of the second protrusion 211. Here, as described based on FIG. 4, the separation distance L2 of the upper portion 211a of the second protrusion 211 in the normal clip state is larger than the opening distance LS of the arm end 103 (arm end angle 103a) in the normal state. short. Therefore, the second projecting portion 211 of the sheet clip 201 in the normal clip state can be sandwiched between the arm end angles 103a of the insulating Yacht 101 in the normal state of the Yatco. Thereafter, by grasping the handle 105 of the insulating Yatco 101, the work arm 102 is closed and the upper portion 211a of the second protrusion 211 is gripped. Thereby, the clamping part 204 of the closed sheet clip 201 is separated and opened.

  FIG. 8 is a front view showing a state in which the arm end 103 of the work arm 102 is gripping the grip portion 205 of the seat clip 201. As shown in FIG. 8, the arm end 103 in the normal state may be brought closer to the holding portion 204 side of the sheet clip 201 and fitted into the grip portion groove 208. In this case, since the arm end 103 is fitted in the grip portion groove 208, the position of the work arm 102 relative to the seat clip 201 is more than that when the arm end 103 is simply gripping the upper portion 211a of the second protrusion 211. Deviation is unlikely to occur.

DESCRIPTION OF SYMBOLS 101 ... Insulating Yat 102 ... Working arm 201 ... Sheet clip 201a ... Clip main body 202 ... Base body 203 ... Rotating fulcrum 204 ... Holding part 205 ... Gripping part 206a ... Torsion spring end (urging part)
208 ... Grip groove 208a ... Bottom LS ... Opening distance

Claims (5)

It has a pair of bases that are pivotably connected around a pivotal fulcrum, and has a holding part for holding an insulating sheet on one end side of the base, and opens and closes the holding part on the other end side of the base A clip main body provided with a widened gripping part for operation, and biased in a direction to close the clamping part by a biasing part;
Each of the pair of bases constituting the grip part is provided over the entire width, and in order to grip the grip part, a groove-like shape into which a work arm of an insulating jacket that approaches the axial direction of the rotation fulcrum of the base body is fitted. The grip groove,
A seat clip comprising: The pair of bases constituting the gripping part are formed in parallel at a distance narrower than an opening distance in the most opened state of the work arm.
The seat clip according to claim 1. It has a pair of bases that are pivotably connected around a pivotal fulcrum, and has a holding part for holding an insulating sheet on one end side of the base, and opens and closes the holding part on the other end side of the base A clip main body provided with a widened gripping part for operation, and biased in a direction to close the clamping part by a biasing part;
Each of the pair of bases constituting the gripping portion is provided in a groove shape over the entire width, the gripping portion groove having a groove width longer than 25 millimeters and a separation distance of less than 55 millimeters;
A seat clip comprising: The pair of base bodies forming the grip portion are formed in parallel at a distance narrower than 55 millimeters,
The seat clip according to claim 3. The bottom portion of the grip portion groove is curved in a convex shape in the width direction of the base body,
The seat clip according to any one of claims 1 to 4.

Images