JPS6022753Y2 - Clamp for holding wires - Google Patents

Description

[Detailed description of the invention] The present invention has a chuck body having a tapered surface holding part.
This invention relates to an improvement in a clamp for securing electric wires, which is equipped with sliding wire gripping members that are tapered on the outside and are connected to each other and can be opened and closed. The present invention provides a wire retaining clamp that facilitates the insertion of the wire and prevents the wire from falling off.

Describing the embodiment of the present invention with reference to the drawings, reference numeral 1 denotes a chuck body, into which a bolter 2 for connecting an insulator mounting bracket is fitted into one end so that it can be fixed with a split pin 3, and onto the lower surface of the other end. A mounting part 4 for a metal fitting for drawing electric wires is provided.

Reference numeral 5 denotes a holding part having a C-shaped cross section that is integrally provided in the main body 1 above the mounting part 4, and tapered grooves 6, which are inclined in a direction approaching each other from one end to the other end, are provided on the upper and lower inner surfaces of the holding part.
6 is set opposite.

7 is an opening provided on one side of the holding part 5.

Reference numeral 8 denotes a wire gripping member having a square bar-shaped upper jaw part 9 and a lower jaw part 10.
Therefore, the outer upper surface of the upper jaw part 9 and the outer lower surface of the lower jaw part 10 are respectively formed into tapered surfaces 11 and 12 having the same inclination as the tapered groove 6 of the clamping part 5, and the opposing inner surfaces are formed over the entire length. It is shaped like gutter-shaped clamping arc surfaces 13 and 14 that are parallel to the length direction of the electric wire.

Reference numeral 15 denotes a vertical cylinder part connected to one end of the upper jaw part 9, and a spring chamber 16 is provided inside the vertical cylinder part to accommodate a coil spring 17.

Reference numeral 18 denotes a seat plate connected to one side end of the lower jaw portion 10. A nut 20 is inserted into the center hole 19 of the seat plate and caulked 21, and the lower part of the bolt 22 inserted into the cylindrical portion 15 is inserted into the nut 20. They are screwed together, and the upper and lower jaw parts 9 and 10 are moved toward and away from each other through the elastic force of the coil spring 17.

23 is a flat washer inserted into the bolt 22, and 24 is a spring washer.

25 is a screw hole provided on the lower surface of one end of the lower jaw portion 10;
A set screw 27 is screwed into the screw hole 25 through a long hole 26 provided in the length direction, and the head of the set screw 27 is brought into sliding contact with the lower surface of the main body 1, so that the lower surface of the lower jaw portion 10 is brought into contact with the upper surface of the main body 1. It is slidable lengthwise along.

Reference numerals 28 and 29 denote expansion guide portions for inserting electric wires that are integrally protruded from the opposite side of the bolt 22 at one end of the upper jaw portion 9 and the lower jaw portion 10, respectively, and the upper guide portion 28 The end face is the outer lower edge 28b of the clamping arc surface 13 of the upper jaw part 9.
The lower guide part 29 extends diagonally upward from the clamping arc surface 14 of the lower jaw part 10, and has an upper surface 14a extending diagonally upward from the clamping arc surface 14. Furthermore, the protruding end surface is formed as an inclined end surface 29a that slopes diagonally downward, and the upper end edge 29b and the lower end edge 28b of the upper guide portion 28 described above are formed to be offset from each other.

To explain how the above embodiment is used, one end of the chuck body 1 is connected to the insulator mounting bracket (
When the wire weir member 8 is retracted to the position indicated by the two-dot dashed line in FIG. The elastic force of the spring 17 causes the upper jaw part 9 to rise, and the upper jaw part 9 and the lower jaw part 10 open as shown in FIG.

At this time, the electric wire dam member 8 slides along the elongated hole 26 of the chuck body 1 by the set screw 27, so that it moves smoothly and accurately without lifting from the chuck body 1.

Next, the drawn electric wire 30 is advanced laterally and passed through the guide portion 28, 29 and the opening 7 of the clamping portion 5 to the upper and lower jaw portions 1.
When inserted between 0 and 11, the electric wire 30 becomes as shown in FIG.
It comes into contact with the inclined end face 29a of the lower guide part 29 and is guided upward, and then immediately the inclined end face 29a of the upper guide part 28
8a, is guided toward the inclined surface 14a of the lower guide portion 29, and placed on the clamping arc surface 14.

Thereafter, when the electric wire weir member 8 is moved toward the other end along the upper surface of the main body 1, the upper and lower jaw parts 9 and 10 are pressed by the tapered grooves 6 and 6 of the clamping part 5 and approach each other, and the electric wire 3
It is something that grasps and holds 0.

Thereafter, when the electric wire weir member 8 is returned to its original position, the upper jaw part 9 and the lower jaw part 10 slide along the tapered grooves 6, 6 of the clamping part 5 and grip the electric wire 30.

At this time, adjust the tightening of the bolt surface 22 to
．． If the opening width of 29 is set appropriately, the tip of the guide part 29 of the lower jaw part 10 will be higher than the clamping arc surface 14, so that the electric wire 30 inserted between the upper and lower clamping arc surfaces 13 and 14 will be inserted into the upper and lower jaw parts. Even if 9 and 10 are opened, it can be held in a stable state without falling off.

Next, the bolt 22 is tightened to firmly grip the electric wire 30.

In this state, the upper jaw part 9 and the lower jaw part 10 are mutually tightened, so even if the electric wire weir member 8 moves back due to wind pressure, etc., it will move back while firmly grasping the electric wire, and the electric wire will be secured. There is no risk of it falling off.

In addition, when removing the electric wire, loosen the bolt 22 and move the electric wire weir member 8 again to the position indicated by the two-dot broken line in FIG. The wire can be removed.

As described above, the present invention has tapered grooves 6, 6 on the upper and lower inner surfaces of the chuck body 1, which has a connecting part for an insulator mounting fitting at one end and a mounting part for a wire pulling fitting at the other end.
A clamping part 5 having a C-shaped cross section is formed, and its tapered grooves 6, 6 have a gutter-like clamping arc surface 13.14 on the inside and a taper with the same taper as the taper groove 6.6 on the outside. The electric wire weir member 8 consisting of the upper jaw part 9 and the lower jaw part 10 having surfaces 11 and 12 is slidably inserted with their clamping arc surfaces 13 and 14 facing each other, and the upper jaw part 9 and the lower jaw part 10 are inserted. are tightened together via a spring, and expansion guide parts 28 and 29 for inserting electric wires are provided protruding from one end of the upper jaw part 9 and the lower jaw part 10, and a guide provided in the lower jaw part 10. This is related to a wire retaining clamp in which the tip of the portion 29 is located at a higher level than the clamping arc surface 14 thereof, and the wire is held between the clamping arc surfaces 13 and 14 of the upper jaw portion 9 and the lower jaw portion 10.
If the bolt 22 is tightened at the same time as the bolt 22 is tightened, the wire will be firmly gripped and the wire will be securely held even if the wire gripping member 8 moves back due to wind pressure. The electric wire can be held in a stable state at all times by grasping the electric wire, and the electric wire can be easily held by using the guide parts 28 and 29 provided at one end of the upper jaw part 9 and the lower jaw part 10 as guides when gripping the electric wire. The guide portion 29 can be inserted between the clamping arc surfaces 13 and 14, and the guide portion 29 provided on the lower jaw portion 10 is arranged so that its tip is higher than the clamping arc surface 14 of the lower jaw portion 10.
9 is made to protrude obliquely upward so that the guide edges 28b and 29b of the guide portions 28 and 29 are misaligned.
There is no risk that the inserted electric wire will be caught in the lower guide portion 28 and come off, and the wire anchoring work can be performed quickly and efficiently.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a partially cutaway side view, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Fig. 3 is a partially cutaway view of the wire gripping member. front view, 4th
The figure is a side view of the wire gripping member, and Figure 5 is B- in Figure 4.
A cross-sectional view taken along the line B and FIG. 6 are cross-sectional views showing the open state of the wire gripping member. 1... Chuck body, 5... Clamping part,
6, 6... Taper groove, 8... Electric wire gripping member, 9... Upper jaw part, 10... Lower jaw part, 11.12... ...Tapered surface, 13.14...
...Pinching arc surface, 17...Coil spring, 28, 29...Guide part.

Claims (1)

[Scope of utility model registration request] At the other end of the chuck body 1, which is provided with a connecting part for an insulator mounting bracket at one end and a mounting part for a wire pulling bracket at the other end, the upper and lower inner facing surfaces and the opposing surfaces toward the other end are mutually connected to each other. A clamping part 5 with a C-shaped cross section is provided with tapered grooves 6, 6 that approach each other, and a trough-shaped clamping arc surface 13 parallel to the length direction of the electric wire is attached to the tapered groove 6.6 on the inner facing surface. , 14 are slidably inserted into the wire gripping member 8 consisting of an upper jaw part 9 and a lower jaw part 10, each having a tapered surface 11, 12 having an inclination equal to that of the tapered grooves 6, 6 on the outside. The upper jaw part 9 and the lower jaw part 10 are tightened together via a spring, and one side end of the upper jaw part 9 and the lower jaw part 10 is opened in the same direction as the opening 7 of the C-shaped holding part 5. Guide parts 28 and 29 for inserting electric wires are provided in a protruding manner, and in these upper and lower guide parts 28 and 29, the protruding end surface of the upper part 28 is inclined obliquely upward from the outer lower end edge 28b of the clamping arc surface 13 of the upper jaw part 9. The lower guide portion 2 is formed on the inclined end surface 28a.
9 further extends diagonally upward from the clamping arc surface 14 of the lower jaw portion 10, the upper surface thereof forms an upwardly inclined surface 14a continuous to the clamping arc surface 14, and the protruding end surface slopes diagonally downward. A clamp for holding electric wires, characterized in that its upper edge 29b and the lower edge 28b of the upper guide portion 28 are staggered with each other.