JPH0628892Y2 - Control rod for bypass circuit formation - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (Industrial Application Field) This invention is a control rod for forming a bypass circuit, more specifically, a bypass circuit formed by attaching to a distribution line so as to bypass a power failure work section. It relates to an operating rod for doing.

(Prior Art) Generally, in the electrical wiring work, the work power outage range is reduced and the work power outage time is shortened to improve customer service,
Temporary construction near the power outage construction site for the purpose of promoting the rationalization of power distribution work by facilitating power outage work, ensuring work safety, and further reducing costs by reducing the amount of power outage and the number of customers requiring notification of power outage Temporarily install a manual switch for
A bypass circuit is formed for the construction section, and the bypass circuit is removed after the construction is completed.

However, since both ends of the bypass circuit are attached to the distribution line by the clamp device, the distribution line is damaged because the clothing of the distribution line is broken, and the clamping device for the distribution line is also used. The installation has the disadvantage that the distribution line is swayed by the wind and the work is troublesome and the mounting state is unstable.

Therefore, the applicant of the present application has proposed a mounting structure of a bypass terminal described below in Japanese Patent Application No. 59-194937.
With this mounting structure, bypass terminals are provided on the load-side and power-side cables that are led out from the switch, and when forming the bypass circuit, one end of the bypass circuit is connected to the power-side cable of the switch that is placed at one end of the power outage section. The other end of the bypass circuit is connected to the provided bypass terminal, and the other end of the bypass circuit is connected to the bypass terminal provided on the load side cable of the switch arranged at the other end of the power outage construction section.

(Problems to be Solved by the Invention) In connection with the bypass cable terminal to the bypass terminal in the bypass method constructed as described above, safe and easy attachment / detachment work is desired.
In particular, it is necessary to bring the bypass cable terminal into proper contact with the bypass terminal and maintain the contact state well by the weight of the bypass cable itself and the pole work.

Therefore, an object of the present invention is to provide an operation rod which can easily attach and detach the bypass cable terminal in the bypass construction and can maintain a stable contact state.

Configuration of the Invention (Means for Solving the Problems) The present invention was made to solve the above-mentioned problems, and it is possible to hang a hook on a place where a bypass terminal is installed on a distribution line. An insulating cylinder having a portion, a cylindrical intermediate terminal provided inside the upper part of the insulating cylinder and electrically connected to the bypass cable, and slidingly contacting the inside of the intermediate terminal with an operating rod inside the insulating cylinder. A contact that moves up and down, a protective cap that closes the upper opening of the intermediate terminal and is detachably attached, a ring-shaped moving cover that is loosely fitted to the outside of the contact in the insulating cylinder, and the same ring shape Interposed between the movable cover and the operating rod,
A coil spring that elastically holds the ring-shaped movable cover and an operating rod lock device that holds the operating rod in the upper moving state are provided, and when the operating rod is moving downward, it contacts the bypass terminal of the contactor. The upper end of the ring-shaped movable cover is positioned at a position covered by the protective cap and the intermediate terminal, and the ring-shaped moving cover is positioned at a contact position of the contactor that contacts the intermediate terminal when the operating rod is moved upward. It is a thing.

(Operation) In the present invention, in the bypass circuit formation, the bypass cable terminal is temporarily hooked to the bypass terminal electrically connected to the load-side and power-side cables led out from the switch with the hooking portion. By moving the contact in this state, the contact can be easily connected to the bypass terminal without the need to support the bypass cable.
In addition, this state can be firmly held, and the contact portion that comes into contact with the bypass terminal when the contact moves upward is covered with the intermediate terminal or the protective cap as a covering member, and the contact portion that comes into contact with the intermediate terminal is covered with the moving cover. Since it is protected from stains.

(Embodiment) An embodiment embodying the present invention will be described with reference to FIGS.
It will be described with reference to the drawing.

The operating rod 13 has a bypass connecting fitting 2 fixed to the upper part of the insulating cylinder 1 by screwing, and one side of the bypass connecting fitting 2 is connected to an end of the bypass cable 3 provided inside the upper part of the insulating cylinder 1. The crimp terminal 4 is tightened and fixed by a bolt 5. Further, a base end portion of a cylindrical intermediate terminal 6 facing downward from an upper end inside the insulating cylinder 1 is screwed to the bypass connecting fitting 2. Notch grooves 7 are formed on the outer circumference of the tip of the intermediate terminal 6 at equal intervals, and engaging grooves 8 are provided on the outer circumference of the tip. A garter spring 9 is wound around the engaging groove 8 to bias the tip of the intermediate terminal 6 inward.

A rod-shaped contactor 10 is arranged in the insulating cylinder 1, and the contactor 10 has an upper end portion, that is, a contactor 10 as will be described later.
The contact portion that comes into contact with the bypass terminal 28 shown in FIG. 4 when it moves upward is inserted into and slidably contacted with the intermediate terminal 6 and is covered by the intermediate terminal 6. In the example, the intermediate terminal 6 also functions as a covering member. The lower end is fixed to the connecting member 12 fixed to the operating rod 11 extending downward. As shown in FIG. 2, in the lower portion of the operating rod 13, one side portion of the insulating cylinder 1 penetrates the inside and the outside and also has an inverted L-shaped elongated hole 14 extending in the vertical direction.
The operation knob 15 screwed to one side of the operation rod 11 is projected to the outside through the elongated hole 14. Therefore, by operating the operation knob 15 up and down,
The operating rod 11 is moved up and down, and by locking the operating knob 15 to the locking portion 17 formed at the tip of the lateral groove 16 above the elongated hole 14, the operating rod 11 is held at the upper position. Has become. Then, the operation knob 15 and the long hole 1
4, the lateral groove 16 and the locking portion 17 constitute a locking device.

A ring-shaped moving cover 18 is loosely fitted to the outer peripheral portion of the contact 10, and the moving cover 18 covers the outer peripheral portion of the contact 10, that is, the contact portion with the intermediate terminal 6 when the contact 10 moves upward. ing. A coil spring 19 is disposed on the outer peripheral portion of the contact 10 between the moving cover 18 and the connecting member 12 to elastically hold the moving cover 18. Then, the operating rod 1 is operated by operating the operating knob 15.
1 is held in the upper position, and when the contact 10 is moved to the upper position, the contact portion of the contact 10 covered by the moving cover 18 is positioned at the contact portion of the tip of the intermediate terminal 6. .

A base of a hook 20 as a hooking portion having a tip end formed in a bifurcated shape is fixed to the bypass connecting fitting 2 above the operation rod 13. In addition, a cylindrical cap with a lid 21 is tightly fitted to the upper opening of the intermediate terminal 6 at its base end so as to be removable. The upper portion of the operating rod 13 is covered with a protective cover 22 except for the opening of the intermediate terminal 6.

Next, an example of a bypass coupling device having a bypass terminal provided in the distribution line path will be described.

FIG. 3 shows the first example, and the bypass coupling device 24 provided in the middle of the power distribution cable 23 will be described.
A fitting 25 is attached to the power distribution cable 23. The mounting bracket 25 includes a holding bracket 25a and a bracket body 25.
The power distribution cable 23 is attached to the power distribution cable 23 by screwing the bolt 26 while sandwiching the power distribution cable 23 between the holding metal fitting 25a and the metal fitting body 25b. An insertion hole 27 that opens downward is formed in the metal fitting body 25b. A proximal end portion of a cylindrical female bypass terminal 28 is fixed to an inner top portion of the insertion hole 27 by screwing a screw 29. Notch grooves 30 directed upward are formed at equal intervals at the tip of the bypass terminal 28 facing downward, and engaging grooves 31 are formed on the outer periphery thereof. A garter spring 32 is wound around the engagement groove 31, and the distal end portion of the bypass terminal 28 is biased inward so that the inner diameter of the distal end portion is constantly reduced.

A step portion 27a is formed at the lower part of the insertion hole 27 so as to step outward, and a pair of left and right open / close door support members 33 having an L-shaped cross section are fixed by screwing screws 34 so as to cover the step portion 27a. There is. The opening / closing door support member 33 has a bottom portion 33a.
Comes into contact with the bottom of the mounting bracket 25 and both side wall parts 33
The upper part of b is arranged so as to abut the insertion hole 27. A pair of insertion holes 35 are provided in the upper and lower sides of the side walls 33b of the open / close door support members 33, respectively, and a pair of left and right open / close doors having a substantially U-shaped cross section are inserted into the insertion holes 27. 36 are provided. The bottom surface of the opening / closing door 36 is formed in an oblique shape so as to form an eight shape when both opening / closing doors 36 are close to each other. Also, the opening / closing door 36 is bent in the vertical direction after being inserted through the outside of the insertion hole 35, and is prevented from falling off. And this door 36
Can be moved through the insertion hole 35 in a direction in which they separate from each other, that is, between the side wall portion 33b and the step portion 27a.

Coil springs 37 are interposed between the opening / closing door 36 and the side wall portion 33b to urge the opening / closing door 36 toward each other. Therefore, the opening / closing door 36 is always closed by the biasing force of the coil spring 37, and can move in the direction in which they are separated from each other against the biasing force of the coil spring 37. The bypass connection device 24 is covered with a protective cover 38 except for the opening of the insertion hole 27.

As described above, in this bypass coupling device 24, a protective cap for closing the opening of the insertion hole 27 for accommodating the bypass terminal 28 is not required, and the work of connecting and disconnecting the bypass cable can be performed quickly. Is improved.

Next, a procedure for connecting the bypass cable 3 with the bypass connecting device 24 and the operating rod 13 configured as described above will be described.

First, the protective cap 21 of the operating rod 13 is removed, and the operating rod 1
The tip of the hook 20 of No. 3 is hooked on the upper part of the bypass coupling device 24, and the weight of the operation rod 13 and the bypass cable 3 is stored in the power distribution cable 23. When the operation knob 15 of the operation rod 13 is moved up in the elongated hole 14 from this state and the contactor 10 is moved up through the operation rod 11, the tip of the contactor 10 projects from the upper surface of the operation rod 13 and is bypass-connected. It is inserted into the insertion hole 27 of the device 24. Further, when the contact 10 is moved upward, the bottom surface of the opening / closing door 36 formed in an oblique shape is pushed open against the biasing force of the coil spring 37, and the operation knob 15 is engaged with the locking portion 17 of the elongated hole 14. When stopped and held at the upper position, as shown in FIG. 4, the contact portion at the tip of the contact 10 covered by the intermediate terminal 6 is inserted into the bypass terminal to maintain the connected state. Also, during this operation, the intermediate terminal 6 comes into contact with the moving cover 18 and the coil spring 19
The movable cover 18 is pushed down against the urging force of the contact cover 10, and the contact portion of the contactor 10 covered with the movable cover 18 contacts the tip portion of the intermediate terminal 6. Therefore, the distribution cable 2
3 and the bypass cable 3 are connected via the mounting bracket 25, the bypass terminal 28, the contact 10, the intermediate terminal 6, the bypass coupling bracket 2, and the crimp terminal 4.

Further, in order to release the connection between the two 28, 10, the operating knob 15 of the operating rod 13 is operated to release the operating knob 15 from the locking portion 17 of the elongated hole 14, and the locking is released. When the contact 10 is moved downward, the contact 10 is pulled out from the bypass terminal 28 and is housed in the operating rod 13, the opening / closing door 36 is closed by the urging force of the coil spring 37, and the bypass terminal 28 is again covered by the opening / closing door 36. It will be.

Therefore, when the bypass cable 3 is connected, the hook 20 of the operation rod 13 connected to the bypass cable 3 is hooked on the bypass connection device 24 and suspended and locked to the power distribution cable 23. The weight of the cable 3 is applied to the power distribution cable 23. Therefore,
The worker does not need to hold the bypass cable 23,
Connection work will be easier and workability will be improved. Further, in the state where the bypass cable 3 is connected to the power distribution cable 23, the contact portions of both the bypass terminal 28 and the contactor 10 that contacts the intermediate terminal 6 are always connected to the intermediate terminal 6 (when not in use). Since it is covered by the moving cover 18, the contact portions are prevented from being soiled.

FIG. 5 shows a second example of the bypass coupling device, which is provided at the connection terminal of the exposed switch.

The same or corresponding components as those of the above-mentioned embodiment are designated by the same reference numerals, and the description thereof will be omitted (the same applies to each embodiment below).

The machine frame 39 includes a mounting bracket (not shown) attached to a armrest (not shown), and a machine frame 39 which is hung from four corners of the upper frame 40.
It is composed of a post 41 of a book and a lower frame 42 in the shape of a square frame fixed to the lower end of the post 41. A pair of main body insulators 43 of each phase are suspended and fixed from both sides of the upper frame 40, and a fixed electrode 44 and an extinction chamber 45 are provided in the main body insulator 43. A movable insulator 46 that can be moved up and down by an operating mechanism (not shown) is provided between the main body insulators 43, and a conductive member 47 is provided at the lower end of the movable insulator 46.
Is provided. A fixed electrode 44 for each phase is attached to the tip.
A movable electrode 48 is provided so as to be capable of contacting with respect to, and protrudes upward.

A cylindrical portion 50 having a through hole 49 is formed on a side portion of the main body insulator 43 so as to project therefrom. A connection terminal 51 is externally fitted to the outer peripheral portion of the tubular portion 50 by a tubular flange portion 51a integrally formed at the central portion thereof, and is adhesively fixed by cementing. The base end portion of the connection terminal 51 penetrates through the through hole 49 of the tubular portion 50 and is fixed to the lower end portion of the connection piece 52 connected to the fixed electrode 44 with a bolt 53. The connection terminal 51 is covered with a protective cover 54 and the protective cover 5
A cap 55 that covers the connection between the connection terminal 51 and the power distribution cable (not shown) is fitted to the side of the connector 4.
In this modification, an insertion hole 56 is provided in the lower center of the connection terminal 51, and a female bypass terminal 28 and an opening / closing door 36 are provided in the insertion hole 56 as in the first embodiment. Using the operating rod 13 similar to that of the above-described embodiment, the operating rod 13 is hooked on the connection terminal 51 of the switch and the bypass cable 3 is connected as described above.

In this modification, the connection terminal 51 is externally fitted to the cylindrical portion 50 of the main body insulator 43 and cemented and fixed, so that the porcelain is more resistant to the pressure from the outside than the internal pressure. Therefore, even if the main body insulator 43 made of porcelain and the flange portion 51a contract in cold weather, the tubular portion 50 is not destroyed, and the connecting rod 51 is connected to the operating rod 13 and the bypass cable 3 by connecting the operating rod 13. Even if a load is applied to the main body insulator 43, no internal pressure is applied to the main body insulator 43, so that the strength of the support structure of the connection terminal 51 can be increased.

FIG. 6 shows a third example of the bypass coupling device, in which the bypass terminal is male.

In this example, an insertion hole 58 is provided in the connection terminal 57 of the exposure type switch similar to the modified example, and a male bypass terminal 59 is formed in the insertion hole 58. That is, as shown in FIG. 6, the connection terminal 57 is provided with an insertion hole 58 that opens downward, and a rod-shaped bypass terminal 59 is provided so as to protrude downward from the center of the inner top of the insertion hole 58. . The tip portion of the bypass terminal 59 is formed in an oblique shape and is sharp. In addition, a rectangular frame-shaped lid member support member 60 is fixed to the lower surface of the connection terminal 57 at the opening of the insertion hole 58, and the inner surface of the lid member support member 60 is formed in an oblique shape so that the width becomes narrower toward the upper side. . Inside the insertion hole 58, a lid member 61 is provided which is prevented from falling off by being locked to the upper surface of the lid member supporting member 60. The inner wall surface of the tubular portion 61a of the lid member 61 slides on the outer peripheral portion of the bypass terminal 59, and the bottom portion 61b.
The outer peripheral portion slides on the inner peripheral surface of the insertion hole 58. Inside the insertion hole 58, a coil spring 81 having one end in contact with the top of the insertion hole 58 and the other end in contact with the bottom portion 61b of the lid member 61 is provided on the outer peripheral portion of the bypass terminal 59. 61 is biased downward.

The second embodiment will be described with reference to FIG.

The operation rod 62 has a bypass connecting metal fitting 66, to which a bypass cable 65 is connected via a crimp terminal 64, screwed inside the upper part of the insulating cylinder 63, and the bypass connecting metal fitting 66 has a cylinder facing downward from the upper end in the insulating cylinder 63. The base end of the intermediate terminal 67 is screwed. A notch groove 68 is formed at the tip of the intermediate terminal 67, an engaging groove 69 is formed at the outer periphery of the tip portion, and a garter spring 70 is provided in the engaging groove 69.
Is provided and always biases inward. The upper part of the female cylindrical contactor 71 disposed in the insulating cylinder 63 is slidably inserted inside the tip of the intermediate terminal 67. Further, the bypass connecting metal fitting 6 is provided at the tip of the contactor 71.
6 is provided with a plurality of contactor projections 71a extending to the upper surface, and engaging grooves 72 are provided on the outer circumference of the contactor projections 71a.
They are bundled by the garter spring 73 wound around. The operating rod connecting member 74 is provided at the lower end of the contactor 71.
The operating rod 75 is connected via. An operation tube 77 is connected to the lower part of the insulating tube 63 via a tube connecting member 76, and the operation tube 77 and the operation rod 75 are provided with the operation knob 15 and the long hole 14 described in the first embodiment. Therefore,
By operating the operation knob 15 to the upper position or the lower position, the contact 71 can be moved to the upper position and the lower position via the operation rod 75. The outer diameter of the operating rod connecting member 74 is equal to that of the tube connecting member 76.
Larger than the reduced inner diameter of the lower part of the operating rod connecting member 74
Is locked to the tube connecting member 76.

A ring-shaped movable cover 79 is loosely fitted and elastically held on the outer peripheral portion of the contactor 71 with a coil spring 78 interposed between the contactor 71 and the operating rod connecting member 74. When the contact 71 is held at the upper position by operating the operation knob 15, the portion covered by the moving cover 79 is the intermediate terminal 6.
7 is located at the contact portion at the tip. In addition,
A protective cap 80 is removably and closely fitted to the contact protrusion 71a at its base end, and the contact portion contacting the bypass terminal 59, that is, the inner peripheral surface of the contact protrusion 71a is covered by the protection cap 80. In this embodiment, the protective cap 80 acts as a covering member.

The second embodiment is different from the first embodiment in that the contactor is formed into a female shape, and the operational effect is the same as that of the first embodiment.

Next, the procedure for connecting the bypass cable 65 of the operating rod 62 to the contact terminal 57 of the switch thus configured will be described. First, the hook 20 of the operating rod 62 without the protective cap 80 attached to the connecting terminal 57. Hanging and operating rod 62
The weight of is stored in the connection terminal 57 side. And the operating rod 62
When the contact 71 is moved upward by operating the operation knob 15 of the above and is inserted into the insertion hole 58 of the connection terminal 57, the contact protrusion 71a
Moves the lid member 61 upward against the biasing force of the coil spring 81. Further, the operation knob 15 is attached to the locking portion 1 of the elongated hole 14.
7, the contact protrusion 71a causes the bypass terminal 5
9 and the connection is maintained. Therefore, the bypass terminal 59 and the bypass cable 65 are connected via the contact 71, the intermediate terminal 67, and the bypass coupling fitting 66.

Further, in order to release the connection between the both 59 and 71, the contact 71 is moved downward by operating the operation knob 15 and the contact protrusion 71a is housed in the operation rod 62, and the lid 61 is slid downward by the coil spring 81. Then, the contact surface of the lower outer periphery of the bypass terminal 59 is covered again.

As described above, the contact portion of the bypass terminal 59 is always covered, so that the stain is prevented. Also, the moving cover 79
Since the contact portion of the contactor 71 with the intermediate terminal 67 is covered by this, contamination of the contact portion of the contactor 71 with the intermediate terminal 67 is prevented. Further, since the operating rod connecting member 74 is configured to be locked to the tube connecting member 76, the contact 71
The position setting in the lower position of can be made more reliable.

The present invention is not limited to the above-mentioned embodiment, and can be arbitrarily modified without departing from the spirit of the present invention.

Effect of the Invention As described in detail above, according to the present invention, when the bypass circuit is formed, the bypass cable can be hooked at the bypass terminal installation location on the power distribution circuit. It is not necessary to support the weight of the bypass cable by hand, and if the operating rod is moved up in this state, the contactor will contact the bypass terminal and the intermediate terminal, and the contactor will contact the bypass terminal and the intermediate terminal. Since the state can be held by the lock device, it is possible to maintain a stable connected state without causing a failure in the connected state against wind pressure and the like.

Further, in this invention, the upper and lower two contact portions which contact the intermediate terminal and the bypass terminal in the above-mentioned connected state are always the intermediate terminal or the cover member made of the protective cap and the moving cover when the operation rod is not used. Since the structure is covered by the above, there is an effect that it is possible to prevent the contact portion from being contaminated, and to prevent a contact failure accident at the time of forming the bypass circuit due to the contact portion from being contaminated.

[Brief description of drawings]

FIG. 1 is a sectional view showing an operating rod embodying the present invention, FIG. 2 is a front view showing the operating rod, FIG. 3 is a sectional view of a bypass connecting device, and FIG. 4 is a distribution cable with a bypass cable. FIG. 5 is a sectional view showing a connected state, FIG. 5 is a sectional view of an essential part of an exposed switch, and FIG. 6 is a sectional view of a connection terminal of the switch.
FIG. 7 is a sectional view of the operating rod showing the second embodiment. 1 ... Insulation cylinder, 2 ... Bypass connecting metal fitting, 3 ... Bypass cable, 6 ... Intermediate terminal, 10 ... Contact, 11 ...
… Operation rod, 14 …… Oval hole, 15 …… Operating knob, 16 ……
Lateral groove, 17 ... locking part, 18 ... moving cover, 19 ...
Coil spring, 20 ... Hook as hooking part, 2
3 ... power distribution cable, 24 ... bypass connecting device, 28
...... Bypass terminal, 51 ...... Connection terminal, 57 ...... Connection terminal, 59 ...... Bypass terminal, 63 ...... Insulation tube, 6
5 ... Bypass cable, 66 ... Bypass connecting metal fittings,
67 ... intermediate terminal, 71 ... contactor, 75 ... operating rod,
78 ... Coil spring, 79 ... Moving cover.

Claims (1)

[Scope of utility model registration request] 1. A bypass terminal (28, 5) on a distribution line.
9) An insulating tube (1, 63) having a hooking portion (20) that can be hooked to an installation location, and an upper part of the insulating tube (1, 63) provided inside the bypass cable (3, 65). A cylindrical intermediate terminal (6, 67) electrically connected to the operating rod (11, 6) inside the insulating cylinder (1, 63).
75) a contactor (10, 71) that moves up and down while slidingly contacting the inside of the intermediate terminal (6, 67), and a protective cap that is detachably attached by blocking the upper opening of the intermediate terminal (6, 67). (21, 80) and the contactor (10, 10) in the insulating cylinder (1, 63).
71) a ring-shaped movable cover (18,
79), the ring-shaped movable cover (18, 79) and the operating rod (1
1, 75) and a coil spring (19, 78) that elastically holds the ring-shaped movable cover (18, 79) and the operating rod (11, 75) in the upper moving state. An operating rod lock device (14, 15, 16, 17) for holding the operating rod locking device (14, 15, 16, 17) is provided, and when the operating rod (11, 75) is moved downward, the bypass terminal (28, 59) of the contactor (10, 71) is provided. The contacting upper end portion is located at a position covered by the protective cap (21, 80) and the intermediate terminals (6, 67), and the ring-shaped moving cover (18, 79) is attached to the operating rod (11, 75). An operating rod for forming a bypass circuit, characterized in that it is located at a contact point of the contact (10, 17) which comes into contact with the intermediate terminal (6, 67) when the upper terminal moves.