JPS64790B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connector for connecting a branch power line to a main power distribution line, which always maintains a good electrical connection at the connection point and is superior to conventional connectors in heat cycle tests when passing large currents. The objective is to provide a highly economical connector that exhibits excellent values that exceed the values of . The mission of the connector is to ensure electrical connection at the branch point and to allow the necessary amount of current to flow safely, and there must be no abnormality such as temperature rise at the connection point.

Originally, overhead power lines are generally strung between utility poles and are constantly under tension, and when external forces such as wind pressure are applied to this, the wires wave or jump, or are exposed to force from the ground. External force may also be applied, causing vibration. As a result, as shown in FIG. 1, the tightening screw of the connector loosens, the connection electrical resistance at the branch point increases, the connection point generates heat, and in the worst case, the overhead wire may break.

In Japanese Patent Application No. 58-47921 related to the present inventor's invention, all the connecting members are housed inside the outer case, and the branch wires are attached to the edge member with two screws screwed at an angle. Since the connection is made by pushing up, the contact surface between the two screws and the branch member is small and unstable, and the two screws have to be tightened alternately, making connection work on the column difficult and time-consuming. be.

An object of the present invention is to accommodate the connecting members inside a molded member that functions like an outer case, so that the connecting members do not scatter or collapse.
To provide a connector in which a tightening member is actuated by two pieces that move up and down in parallel by turning a single bolt, and is pressed into contact with a branch electric wire to establish an electrical and mechanical connection between the branch electric wire and the main power distribution line. be.

The configuration, operation, and effects of the present invention will be explained with reference to the drawings.

Figure 2 A, B, C, and D show the first member A. A cut window 9 is provided at one end of the highly conductive rectangular metal plate 1.
9' side by side, punch out and make rivet holes 5, 5 on the other end.
Line up and punch out. Next, bend one end of the metal plate 1 outward with an arc at approximately the radius of the lid fixing pins P and P ₂ to form a folded piece 1a, and overlap the ends on a plane parallel to the outer surface of the metal plate 1. The contact surfaces are soldered and bonded using solder or the like. Reference numeral 1b denotes a bent piece by bending the other end of the metal plate 1 inward at approximately 90 degrees. The product thus molded is referred to as a first member A. This metal plate 1 is divided into two metal plates 1 as described later with reference to FIG.
The other end folded pieces 1b of 1 and 1 are arranged facing inwardly, and an inclined plate 70 bent in a U-shape when viewed from the side is fitted between them and fixed with rivets or the like.

Figure 3 A, B, and C are the first
The convex annular portion 6 of the first member A assembled as shown in Fig. 3,
7, 8 and slit windows 9, 9′ engage with each other.
4, 25, 26 and convex annular portions 27, 28, 29, 3
Highly conductive rectangular metal plate 31 with 0 on both sides
This is referred to as the second member B. The inner diameter of the convex annular portions 27, 28, 29, 30 of the metal plate 31 is the same radius as the curved inner diameter of the folded piece 1a of the first member A, and when the first member A and the second member B are combined. The opening of the first member A is covered with the second member B, and the cover fixing pins P ₁ and P ₂ shown in FIG.
are inserted into the small holes h at the tips of the lid retaining pins P ₁ and P ₂ to prevent the lid retaining pins P ₁ and P ₂ from coming off from the respective convex annular portions.

FIG. 4 A, B, C, D, and H show the third member C. The third member C is fitted between the assembled first members A and A so as to be able to slide vertically, and between the second member B and the third member C, the power distribution main line L and the branch electric wire l
(Fig. 15), and cuts 61, 61', 63, and
3' and cut them off leaving protrusions 62, 62', 64, 64' facing upward and downward at the four corners of both ends, and as shown in Fig. 4E, fold lines 66-66, 67-
At step 67, it is once erected in a U-shape in the same direction and then bent. And the edges 65, 6 at the center of the upper and lower edges bent and raised in FIG.
5' are folded inward to face each other to form the end edge 6.
When the metal plate 65, 65' is pushed down until it hits the bottom surface of the metal plate 60, the tips of the edges 65, 65' face each other at a certain angle, and the abutment creates an eight-shaped depression at a certain angle. Insert the branch wire l parallel to this hollow part,
Next, the four corner upright pieces 62, 62', 64, and 64' are bent outward to form protruding pieces at the four corners as shown in FIG.
When the third member C is fitted between and A, the upright piece 6
2, 62', 64, 64' are engaged with both outer edges of the first members A, A, respectively, and the outer surfaces 68, 68' are
The third member C is bonded to the inner walls of members A and A so that it can slide only in the vertical direction, thereby stopping the wire from moving in the axial direction (FIGS. 17, 15, and 16).

5A, B, C, and D show the U-shaped inclined plate 70. As shown in the developed view of FIG. 5D, a rectangular metal plate is symmetrically formed with inclined surfaces 71 and 7 at approximately equal angles, leaving the centers 77 and 77' of the upper and lower edges, respectively.
Cut along lines 1', 72, and 72'. Further, rivet holes 75, 75', 76, and 76' are made in the center, and the pieces are bent to the same side along parallel bending lines 73 and 74 to form a U-shape. Therefore, as shown in FIGS. 5A, 5B, and 5C, the upper edges of the upright surfaces bent to form a U-shape become inclined surfaces 71, 71', 72, and 72' of inclined nuts 80 and 80a, which will be described later. to make it slippery. First member A, bent piece 1 of A
Place the U-shaped inclined plate 70 on b, 1b, and connect the rivet holes 75, 75', 76, 76' with the first members A, A.
Insert rivets into the rivet holes 5, 5', 5, 5' and caulk them.

Figure 6 A, B, C, D, and E show a bolt-fitting hole made in the center of an inclined nut 80 made of a rectangular metal rod or metal plate, and a female thread 81 for attaching the tightening bolt 48 to this hole. to be engraved. The left and right surfaces 89, 89' of the inclined nut 80 are planes parallel to the longitudinal axis of the main branch connector, and fit into the inner surfaces of the first members A, A. The dimensions of the upper and lower surfaces 87, 87' and 88, 88' of the inclined nuts 80, 80a are both the same as the first one.
The dimensions are such that it fits inside the U-shaped swash plate 70 inside members A and A. The upper surface S83 and the lower surface L84 of the female thread 81 are planes parallel to the central axis of the tightening bolt 48 of this branch connector, and the distance between the center of the horizontal axis and the upper surface S38 is equal to the horizontal axis. The dimension is slightly shorter than the distance from the surface L84 below the center. When the branch electric wire l is a thick electric wire, it is joined to the third member C with the upper surface S83 of the short dimension facing upward, and when the branch electric wire l is a thin electric wire, the lower surface L of the long dimension is connected to the third member C.
48 is faced upward and joined to the third member C. Inclined surfaces 8 carved on the upper and lower sides of the left and right sides of the inclined nut 80
5, 85', 86, 86' are connected to the inclined surfaces 71, 72 of the U-shaped inclined plate 70, so when connecting a large diameter branch wire l to the main distribution line L, the upper surface S83 is joined to the third member C, and the inclined surfaces 85, 85' of the inclined nut 80 are connected to the inclined surfaces 71,
Joins with 72. When connecting a branch wire l with a small diameter to the main line L, the inclined nut 80 is rotated by 180 degrees to join the lower surface L84 to the third member C, so the inclined surfaces 86' and 86 of the inclined nut 80 are inclined. Surface 71,
72.

FIG. 7 shows a female threadless inclined nut 8 that is loosely fitted onto the tightening bolt 48 in correspondence with the inclined nut 80.
Indicates 0a. This inclined nut 80a has the same shape as the inclined nut 80, except that the inclined nut 80a has the same shape as the inclined nut 80.
0 has a female thread 81 that can be screwed onto the tightening bolt 48, but the inclined nut 80a
A circular hole 81a having an inner diameter slightly larger than the outer diameter of the thread of the tightening bolt 48 is bored in the hole 81a. Other inclined nut 80a dimensions are inclined nut 80
It is exactly the same as above, and the corresponding parts are indicated by the same code with the Roman letter a appended.

8A and 8B show a sleeve 49 cut into rings from a round metal tube and inserted into the tightening bolt 48 in line with a female threadless inclined nut 80a. The length of this sleeve 49 is such that the hexagonal head 48a of the tightening bolt 48 does not go too far inside the first member A, and a rotational force can always be applied to the head of the tightening bolt 48 using a spanner or the like. Note that the sleeve 49 may not be used, and the length of the female threadless inclined nut 80a may be increased accordingly, and the nut 80a may be locked to the head of the tightening bolt 48.

9A and 9B show a soft synthetic resin nut 50, which is an elastic rectangular plate made of soft vinyl chloride resin, etc., with a hole 51 narrower than the outer diameter of the tightening bolt 48 in the center thereof. The outer diameter is such that it fits inside the inclined plate 70 of the first member A.
When wave vibration occurs in the wire, it acts as a buffer for the movement applied to the tightening bolt.

FIG. 10 shows the hinge fixing pins _P1 and PB of the first member A and the second member B. In order to prevent the lid fixing pins _P1 and _P2 from being separated and lost, one ends of these pins are tied together with a strong resin string 52.

FIG. 11 shows a tightening bolt 48 having a head 48a.
shows.

12A and 12B show a wire damage protection plate 53 made of a rectangular thin metal plate with high conductivity, such as an annealed copper plate, which is attached and used as necessary. As shown in the developed view of FIG. 12B, square (or round) small holes 54, 55 are made on both sides of one end of the wire damage protection plate 53, and the upright pieces 62 of the third member C are inserted into the small square holes 54, 55. and 6
4 is inserted and bent appropriately so that the bending line 56 enters below the branch electric wire l along the outer surface 68 of the central part of the third member C, and wraps the branch electric wire l and the main distribution line L (16th (See figure) Figures 13A and 13B show the assembled state of the first member A. However, the first member and the U-shaped inclined plate may be integrally formed without depending on the assembly method. As described above with respect to Fig. 5 A, B, C, and D, the two outer plates of the first members A and A are stacked facing each other on the outside of the U-shaped inclined plate 70, and the rivet holes are aligned and riveted. Make the connection. This will be referred to as the first member A. Next, as shown in FIG. 14, the tightening bolt 48
an inclined nut 80, a threadless inclined nut 80a,
After attaching the sleeve 49, the soft synthetic resin nut 50, etc., the sling washer 57 is engaged with the neck of the tip of the tightening bolt 48.

Next, the overall assembly order will be explained. The second part is attached to the cut windows 9, 9' of one folded piece 1a of the opening of the first member A.
One convex annular portion 27, 28, 29, 30 of member B
and insert the cover fixing pin P ₁ into this part,
The other convex annular portion of the second member B is spaced apart from the other folded piece 1a of the first member A, and the opening is left open.

Next, attach the head of the tightening bolt 48 with the inclined nut to the first
Insert the soft synthetic resin nut 50 to the outside of the first member A, and push the soft synthetic resin nut 50 between the inclined plates 70 of the first member A.
The two inclined nuts 80, 80a are connected to the U-shaped inclined plate 7.
They are placed on the inclined surfaces 71, 72 and 71', 72' of 0, respectively.

Next, fit the small holes 54, 55 of the electric wire damage protection plate 53 into the protrusions 62, 64 on one side of the third member C, and place the electric wire damage protection plate 53 on the edges 65, 65' of the third member C. After installing it by rolling it into an S-shape, insert it into the first member A and place it flat on the two inclined nuts 80, 80a. Projection pieces 62, 6 at the four corners of the third member C
2', 64, and 64' protrude outward from the first member A to perform a pulling and holding action between the first member and the third member.

Next, the other convex annular portion 27, 28 of the second member B,
29, 30 are engaged with the cut windows 9, 9' of the other first member A, and the lid fixing pin _P2 is inserted into the corresponding portions to fix the lid, thereby completing the product (FIG. 16A).

Next, a method for connecting branch wires will be explained. First, remove the lid retaining pin _P2 , and open the second member B in a counterclockwise direction about the lid retaining pin _P1 .

Next, pull out one end of the wire damage protection plate 53 with your fingertips, and then insert the branch wire l from above the wire damage protection plate and press it into the recess of the third member C (FIG. 16B).

Next, when the electric wire damage protection plate 53 is brought to the opposite side so as to be wrapped around the branch electric wire l, and the power distribution main line L is inserted onto the electric wire damage protection plate 53, the electric wire damage protection plate 53
is inserted between the branch wire L and the distribution main line L (16th
Figure c). Wrap the wire damage protection plate around the main power distribution line L, bring it out on the other side in an S shape, and push it inside.
Next, the second member B is closed and the other convex annular portion 27, 2 is closed.
8, 29, 30 and the cut windows 9, 9' of the first member A
Insert the cover fixing pin P ₂ into the hole and tighten the tightening bolt 48 with a wrench (Fig. 16 D). Then, among the two inclined nuts 80, 80a, the inclined nut 80 advances inwardly into the first member A due to the rotation of the tightening bolt 48. At this time, the inclined surfaces 85, 8 of the inclined nut 80
5' rests on the inclined surfaces 71 and 72 of the U-shaped inclined plate 70, so as the inclined nut 80 moves inward, it is pushed upward by the inclined surfaces 71 and 72, so that it is directly above the inclined nut 80. Push up the third member C.

When the inclined nut 80 advances inward, the inclined nut 80a that is not provided with a female thread in its path is a tongue that is pushed out in the direction in which the inclined nut 80 advances.
Since the inclined nut 80a abuts against the sleeve 49 which is engaged with the head 48a, the inclined nut 80a also advances inwardly in the first member A as the tightening bolt 48 advances. Therefore, the inclined nut 80a also moves at the inclined surface 7 of the U-shaped inclined plate 70 at the same speed as the inclined nut 80.
1' and 72', the third member C immediately above them is pushed upward in a horizontal state.

The distance between the inclined nuts 80 and 80a gradually narrows until reaching the intermediate position of the soft synthetic resin nut 50, which reaches the limit of tightening. In this way, the power distribution main line L and the branch wire 1 are pushed up by the third member C at two locations across the entire width of the second member B, and a good electrical and mechanical connection is obtained.

By having the present invention configured as described above, the first member, the second member, and the third member serve as an outer case, and the first member, the second member, and the third member are accommodated in this outer case-like member so as to be able to slide only in the vertical direction. When the third member is raised, the main power distribution line and the branch electric wire housed between the second member and the third member can be tightened while maintaining parallelism with each other with or without the electric wire damage protection plate, By turning the tightening bolt, the two inclined nuts are moved so that they are simultaneously pushed up by the inclined surface of the inclined plate, and the third member is moved so that each nut gradually pushes up the third member at a uniform speed. As mentioned above, the main line and the branch electric wire are mechanically and firmly stabilized in a wide range over the entire width of the first member by being easily pushed up by the vertical upward force which is a component of the rotational force of the tightening bolt without tilting. A good electrical connection can be made. Moreover, even after years of use, the load due to wind pressure, vibration, etc. is not applied in the direction of rotation of the tightening bolt, so there is no need to worry about natural loosening. The reason is,
This is because the surfaces of the inclined nut and the inclined surface of the inclined plate of the first member are in close contact with each other and are constantly under pressure. In addition, since the soft synthetic resin nut is interposed between the two inclined nuts, the outer diameter of each inclined nut fits into the inside of the first member, and the outer diameter of the soft synthetic resin nut is larger than the outer diameter of the tightening bolt. Because the inner diameter of the connector is made slightly smaller, the inclined nut will not move or loosen even if the connector is subjected to vibration, and by changing the position of the inclined nut upside down, the distance between the third member and the wire can be reduced when tightening the wire. Since it can be adjusted to match the outer diameter of the electric wire, it has excellent effects such as facilitating the work of connecting electric wires and being highly versatile in connecting electric wires.

[Brief explanation of drawings]

Fig. 1 is a side view of a conventional connector, Fig. 2 A, B, C, and D are a front view, side view, top view, and bottom view of the first member, and Fig. 3 A, B, and C are the second member. Front view, side view and bottom view of the member, 4th
Figures A, B, C, D, and E are a plan view, left side view, right side view, front view, and developed view of the third member;
Figure 5 A, B, C and D are the front view, top view, side view and developed view of the U-shaped inclined plate, Figure 6 A,
B, C, D, and E are a side view, front view, rear view, plan view, and perspective view of a slanted nut with a female thread; FIG. 7 is a perspective view of a slanted nut without a female thread; FIG. 8 A and B are front and side views of the sleeve, FIG. 9 A and B are front and side views of the soft synthetic resin nut, FIG. 10 is a plan view of the lid retaining pin, and FIG. front view of bolt,
Figure 12 A and B are perspective views and developed views of the electric wire damage protection plate, and Figure 13 A and B are the two first
FIG. 14 is a front view and side view of the assembled member and U-shaped inclined plate, FIG. 14 is a front view of the assembled tightening bolt, inclined nut, and soft synthetic resin nut, and FIG. A front view of the assembled member, the third member, the U-shaped inclined plate, the tightening bolt, the inclined nut, and the soft synthetic resin nut, and Figures 15B and 15C show the first member, the second member, and the third member. FIG. 16A is a side view showing the operating state of the second member when the U-shaped inclined plate, tightening bolt, inclined nut, and soft synthetic resin nut are assembled, and FIG. Side view of the state in which the scratch protection plate is assembled, Figure 16 B, C and D are as follows.
The order of enclosing the power distribution main line and branch power line with a wire damage protection plate, placing it on the third member, closing the second member, and tightening the branch connector of the present invention, the power distribution main line, and the branch power line with a tightening bolt. Explanatory drawings and FIGS. 17A and 17B are a front view and a side view of a state in which a power distribution main line and a branch wire are tightened by the branch connector of the present invention. A: first member, B: second member, C: third member,
1: metal plate, 1a: folded piece, 48: tightening bolt, 48a: head of tightening bolt, 62, 62',
64, 64': protrusion piece of third member, 70: inclined plate,
71, 71', 72, 72': inclined surface of inclined plate,
P ₁ , P ₂ : Lid fixing pin, 80: Inclined nut with female thread, 80a: Inclined nut without female thread,
85, 85', 86, 86': Inclined surfaces of the inclined nut.

Claims (1)

[Claims] 1. Having a folded piece 1a at one end facing each other, and symmetrically inclined surfaces 71 and 7 inside the other end.
2, 71' and 72' are respectively provided on the first member A assembled into a box made of two metal plates having the inclined plate 70 integrally provided thereon, and on the folded piece 1a at one end of the first member A. A second member B is hinged with a lid stopper pin _P1 to close the other end of the first member A, and is hinged to maintain its closed state with a lid stopper pin _P2 .
and protruding pieces 62 and 62', 64 and 64' that engage with both outer edges of the first member A are provided at the four corners, respectively, and these protruding pieces are engaged with both outer edges of the first member A so that the upper and lower a third member C that is configured to slide only on the side; a slope nut 80 having internal threads; and a slope nut 80 whose bottom surfaces on both sides are joined to the slopes of the slope plate 70, whose top surface is in contact with the bottom surface of the third member C; A tilted nut 80a without a thread and a tilted nut 80 with a female thread
into the inclined nut 80a that does not have a female thread.
A tightening bolt 48 that is inserted and locked
and the protruding pieces 62 and 64 or 62' of the third member C.
and 64' have small holes 54 and 55 which engage the third
It consists of a wire damage protection plate 53 that is rolled up into an S-shape and wrapped around the main line L and branch line l on the edges 65, 65' of member C, and the opening of the first member A is connected to the second member B. is closed, and the tightening bolt 48 is screwed into the inclined nut 80, and the third member C is operated using the inclined nut 80 with a female thread and the inclined nut 80a without a female thread, and the main wire sandwiched between the wire damage protection plates 53 is removed. A branch connector characterized in that L and a branch line L are tightened between a second member B and a third member C. 2. A soft synthetic resin nut 50 inserted into the tightening bolt 48 is interposed between the inclined nut 80 having an internal thread screwed into the tightening bolt 48 and the inclined nut 80a having no internal thread inserted into the tightening bolt 48. A branch connector according to claim 1. 3 Slanted plate 7 of the first member A symmetrically on both left and right sides
0 symmetrical inclined surfaces 71 and 72, 71' and 7
An inclined nut 80 with an internal thread and an inclined nut 8 without an internal thread provided with an inclined surface connected to the 2'.
At 0a, lower surfaces L84 and L84a at a distance farther from the center axis of the tightening bolt and upper surfaces S83 and S83 at a shorter distance than the center axis of the tightening bolt.
The branch connector according to claim 1, wherein a and a are respectively formed.