JP3180554B2 - Switch terminal conductor structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a main circuit terminal conductor structure of a switch, for example, a circuit breaker, a load switch, a contactor and the like.

[0002]

2. Description of the Related Art A vacuum switch will be described below as an example. FIG. 4 shows a conventional apparatus of this type.
FIG. 4 is a sectional view of the vacuum switch. In the drawing, 1 is an insulating frame formed of an insulating material, 2 is a vacuum switch tube, 3 is a fixed electrode rod of the vacuum switch tube 2, 4 is an upper terminal, and 5 is an upper terminal 4 is a fixed electrode rod 3. A bolt for tightening and fixing to the insulating frame 1, 6 is a movable electrode rod of the vacuum switch tube 2, 7 is an upper terminal conductor, 8 is a lower terminal conductor, 9 is a movable electrode rod 6 and terminal conductors 7, 8 and Is a fastening tool consisting of a bolt and a nut for fastening the lower terminal composed of the upper terminal conductor 7, the lower terminal conductor 8 and the flexible conductor 9 to the insulating frame 1. is there.

[0003] Reference numeral 11 denotes an insulating rod for transmitting the operating force of an operating mechanism (not shown) to the movable electrode rod 6 and electrically insulating the movable electrode bar 6 from the operating mechanism. Nuts 13 and 14 for tightening the flexible conductor 9 to the movable electrode rod 6 using a screw bar are external conductors connected to the switch, and 15 and 16 are external conductors 13 and 14.
Is a fastening tool for fastening the lower terminal composed of the upper terminal 4, the upper terminal conductor 7, the lower terminal conductor 8 and the flexible conductor 9.

Next, a method of assembling the terminal conductors in the vacuum switch having the above-described configuration will be described. First, the flexible conductor 9
Is connected to the movable electrode bar 6 which is the movable portion conductor of the switch, and the upper terminal conductor 7
Place. Thereafter, the flexible conductor 9 and the upper terminal conductor 7 are inserted into the lower terminal fixing holes provided in the insulating frame 1 while fixing the fixed electrode bar 3 and the upper terminal 4 to the insulating frame 1 with bolts 5. . Then, the lower terminal conductor 8 is inserted into a lower terminal fixing hole provided in the insulating frame 1 and fixed to the insulating frame 1 with the fastener 10.

[0005] Next, the operation of the vacuum switch having such a construction will be described. When a command to open or close is given to the switch, an operating mechanism (not shown) operates to operate the movable rod 6 via the insulating rod 11. Thereby, the contacts in the vacuum switch tube 2 are opened and closed.
The main circuit of this switch includes a lower terminal composed of an upper terminal 4, a fixed electrode rod 3, a vacuum switch tube 2, a movable electrode rod 6, a flexible conductor 9, an upper terminal conductor 7, and a lower terminal conductor 8. It consists of a route that passes. In the opening / closing operation of the switch, one of the flexible conductors 9 forms a laminated body with the upper terminal conductor 7 and the lower terminal conductor 8, and is fixed to the insulating frame 1 by the fastener 10, and the other end is the movable electrode rod 6. To move up and down following the movable-side electrode rod 6 to conduct electricity.

[0006]

However, in the above-described conventional terminal conductor structure, since the flexible conductor 9, the upper terminal conductor 7, and the lower terminal conductor 8 are composed of separate parts, the assembly is difficult. In such a case, it is necessary to assemble them individually, which has a disadvantage that the assembling is complicated and the assembling is not easy.
Also, the flexible conductor 9, the upper terminal conductor 7, and the lower terminal conductor 8
When fixing with bolts etc., a gap occurs due to tightening,
There was a problem in assemblability.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above-mentioned drawbacks or problems of the prior art. It is an object of the present invention to provide a switch terminal conductor structure which is easy to assemble and has good assemblability. To provide.

[0008]

In order to achieve the above object, a terminal conductor structure of a switch according to the present invention comprises a flexible conductor having one end connected to a movable portion conductor of the switch, A pair of highly conductive terminal conductors connected to external conductors laminated in a sandwich on both surfaces of the other end of the conductive conductor, and an insulating support member holding the terminal conductor and supporting the flexible conductor. And the pair of terminal conductors is connected to these terminal conductors.
It is connected via a connecting member formed on the body . Further, in the terminal conductor structure of the switch according to the present invention, each of the flexible conductor and the terminal conductor has a pair of flexible conductors.
An engaging part that prevents the body from coming off is integrally formed.
It is. In the terminal conductor structure of the switch according to the present invention, the flexible conductor and the terminal conductor are each integrally formed with an engaging portion for preventing the flexible conductor from rotating .
Further, in the terminal conductor structure of the switch according to the present invention, a guide portion is provided at a portion where the flexible portion of the flexible conductor of the terminal conductor contacts. Further, in the terminal conductor structure of the switch according to the present invention, the opening side of the connected terminal conductor has a divergent shape ,
After inserting the flexible conductor between a pair of terminal conductors,
The connecting member is plastically deformed to make the pair of terminal conductors substantially parallel.
State. In addition, the terminal conductor structure of the switch according to the present invention includes a flexible conductor having one end connected to the movable portion conductor of the switch, and an external conductor laminated in a sandwich shape on both surfaces of the other end of the flexible conductor. A pair of highly conductive terminal conductors connected to the conductor, and an insulating support member that holds the terminal conductor and supports the flexible conductor, and connects and integrates the pair of terminal conductors; The flexible conductor and the terminal conductor, a hole and a protrusion for preventing the flexible conductor from coming off, and a notch and a connecting portion for preventing the flexible conductor from rotating around;
Further, a guide portion is provided at a portion of the terminal conductor portion where the flexible portion of the flexible conductor contacts.

[0009]

According to the present invention, the flexible conductor and the terminal conductor are integrated. Further, according to the present invention, the flexible conductor integrated with the terminal conductor is prevented from coming off. Further, according to the present invention, when the flexible conductor is fixed to the terminal conductor and the insulating support member, rotation is prevented. According to the present invention,
The stress at the portion of the flexible conductor that contacts the terminal conductor is dispersed by the guide. Further, according to the present invention, the flexible conductor is easily inserted from the flared opening. Also,
According to the present invention, the flexible conductor and the terminal conductor are integrated, the protrusion engaging with the hole prevents the flexible conductor from coming off, and the notch engages with the connecting portion to achieve flexibility. Around the conductor is prevented, and the stress of the portion of the flexible conductor that contacts the terminal conductor is dispersed by the guide.

[0010]

【Example】

Embodiment 1 FIG. Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view of a vacuum switch according to the present invention, FIG. 2 shows a terminal conductor, and FIG. 3 shows a flexible conductor. In these figures, the same or equivalent components as those of the related art are denoted by the same reference numerals, and detailed description is omitted. The feature of the present invention lies in the structure of the terminal conductor 17 and the flexible conductor 18. That is, the terminal conductor 17 is
The upper terminal conductor 7 and the lower terminal conductor 8 are connected to each other by a connecting portion 21a.
And 21b are integrally formed by bending a thin plate. A projection 19 projects from the lower surface of the center of the upper terminal conductor 7, and holes 20 a and 20 b are provided on both sides thereof. These holes 20 a and 20 b are also provided at the same position of the lower terminal conductor 8. ing. Reference numeral 22 denotes a guide portion which is formed by forming a corner portion 22a having an arc shape in a side view on one side surface portion of the upper terminal conductor portion 7 and bending the same. The terminal conductor 17 is formed in a divergent shape with an angle α on the opening side opposite to the connecting portions 21a and 21b.

[0011] The flexible conductor 18, the whole thin plate-shaped conductors are laminated are flexible, hole 24 corresponding to the projection 19 of the terminal conductor 17, also holes 20 a, 20 b Are respectively provided.
Also, on one side surface, a connecting portion 21 of the terminal conductor 17 is provided.
Notches 26a and 26b are provided corresponding to a and 21b. Reference numeral 27 denotes a hole for fixing the flexible conductor 18 to the movable electrode rod 6 of the vacuum switch tube 2.

Next, a method of assembling the switch having such a configuration will be described. First, the flexible conductor 18 is inserted from the opening side of the terminal conductor 17 and sandwiched between the terminal conductors 17, and the hole 24 and the cutouts 26a and 26b of the flexible conductor 18 are inserted into the protrusions 19 and the connecting portions 21a and 21b of the terminal conductor. And the terminal conductor 17 and the flexible conductor 18
Are integrated to form a lower terminal. At this time, since the opening side of the terminal conductor 17 is formed in a divergent shape, the insertion of the flexible conductor 18 is easily performed. Next, the other end of the flexible conductor 18 is fixed to the movable electrode bar 6 which is a movable conductor of the switch by inserting the bolt 12 into the hole 27. Thereafter, the flexible conductor 18 configured as the lower terminal described above is used.
And the terminal conductor 17 are inserted into the lower terminal fixing holes provided in the insulating frame 1, and the fixed electrode rod 3 and the upper terminal 4 are inserted.
Is fixed to the insulating frame 1 with bolts 5. Then, the fastener 10 is inserted through the holes 20b and 25b, and the flexible conductor 18 and the terminal conductor 17 configured as lower terminals are fixed to the insulating frame 1. At this time, the notches 26a, 26b of the flexible conductor 18 are connected to the connecting portions 21a, 21
Since it functions as a detent by engaging with b, assemblability is improved. Also, the attached flexible conductor 18 has a hole 24.
Are engaged with the projections 19 to prevent them from coming off, and prevent them from falling off during operation. The terminal conductor 17 is configured as a lower terminal by giving the rigidity necessary for the flexible conductor 18 as a terminal. Finally, the external terminals 14 are attached to the lower terminals by inserting the bolts 16 into the holes 20a and 25a.

Next, the operation of the switch thus assembled will be described. When an open or close command is given to the switch, an operating mechanism (not shown) operates to operate the insulating rod 11.
The movable rod 6 is operated via. Thereby, the contacts in the vacuum switch tube 2 are opened and closed. The main circuit of the switch includes an upper terminal 4, a fixed electrode bar 3, a vacuum switch tube 2, a movable electrode bar 6, a flexible conductor 18, and a terminal conductor 1.
7 comprises a path passing through the lower terminal. In the opening / closing operation of this switch, one of the flexible conductors 18 is sandwiched between the terminal conductors 17 and the insulating frame 1 is clamped by the fastener 10.
And the other end is connected to the movable-side electrode rod 6, and moves up and down following the movable-side electrode rod 6 to conduct electricity. At this time, the flexible portion of the flexible conductor 18 comes into sliding contact with the end portion of the terminal conductor 17, but the corner portion 22a of the guide portion 22, which is the end portion, is formed in an arc shape, whereby the stress is dispersed, and Prevent breakage of the flexure.

Embodiment 2 FIG. In the above embodiment, the terminal conductor 17
Is formed as a thin plate, and the flexible conductor 18 is sandwiched by hand. However, if the current carrying capacity or strength is insufficient, the plate may be thickened and sandwiched by a jig.

Embodiment 3 FIG. Further, in the above embodiment, only the upper guide portion 22 is provided to prevent the flexible portion from being damaged in the vertical displacement movement following the movable electrode rod 6 of the flexible conductor 18. Depending on the positional relationship between the lower terminal composed of the conductor 18 and the terminal conductor 17 and the movable-side electrode rod 6, a guide may be provided only on the lower side or on both the upper and lower sides.

[0016]

As described above, according to the present invention, the flexible conductor having one end connected to the movable portion conductor of the switch, and the flexible conductor being laminated on both sides of the other end in a sandwich shape. A pair of highly conductive terminal conductors connected to the external conductor,
An insulating support member for holding the terminal conductor and supporting the flexible conductor; and connecting and integrating the pair of terminal conductors, the flexible conductor can be integrated with the terminal conductor. Therefore, the number of parts is reduced and the assembling is facilitated.

Further, according to the present invention, by providing the engaging portion between the flexible conductor and the terminal conductor for preventing the flexible conductor from coming off, the flexible conductor can be erroneously displaced from the terminal conductor. The switch does not fall out, and the malfunction of the switch can be prevented.

Further, according to the present invention, by providing the engaging portion between the flexible conductor and the terminal conductor for preventing the flexible conductor from rotating around, the flexible portion is provided together with the terminal conductor during assembly. When the conductor is fixed to the insulating support member, the conductor is prevented from rotating, so that the assemblability is improved.

Further, according to the present invention, since the guide portion is provided at a portion of the terminal conductor where the flexible portion of the flexible conductor contacts, the stress of the portion of the flexible conductor that contacts the terminal conductor is reduced by the guide portion. , The breakage of the flexible conductor during operation can be reduced.

Further, according to the present invention, since the opening side of the connected terminal conductor is formed to have a divergent shape, the flexible conductor can be easily inserted into the terminal conductor, and the assembling property is improved.

Further, according to the present invention, the flexible conductor having one end connected to the movable portion conductor of the switch and the external conductor laminated in a sandwich on both surfaces of the other end of the flexible conductor are connected. A pair of highly conductive terminal conductors, and an insulating support member that holds the terminal conductors and supports the flexible conductors, and connects and integrates the pair of terminal conductors. The flexible conductor and the terminal conductor are provided with a hole and a projection for preventing the flexible conductor from coming off, a notch and a connecting portion for preventing the flexible conductor from rotating, and the flexibility of the terminal conductor portion is provided. By providing the guide portion at the portion where the flexible portion of the conductor contacts, the flexible conductor and the terminal conductor are integrated to facilitate assembly, and the flexible conductor is pulled out by the projection engaging the hole. This prevents the flexible conductor from falling off, preventing malfunctions. Can, moreover since the notch in the connecting portion around the flexible conductor is prevented by engagement,
Since the assemblability is improved and the stress at the portion of the flexible conductor that contacts the terminal conductor is dispersed by the guide, the breakage of the flexible conductor can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view of a vacuum switch according to the present invention.

FIG. 2 shows a terminal conductor according to the present invention, wherein (a) is a plan view, (b) is a front view, and (c) is a side view.

3A and 3B show a flexible conductor according to the present invention, wherein FIG. 3A is a plan view and FIG. 3B is a side view.

FIG. 4 is a sectional view of a conventional vacuum switch.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Insulation frame, 2 vacuum switch tube, 3 fixed electrode rods, 4 upper terminals, 6 movable electrode rods, 17 terminal conductors, 18 flexible conductors, 19 protrusions, 21a, 21b
Connecting part, 22 guide part, 24 holes, 26a, 26b
Notch

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Showa 59-110917 (JP, U) Japanese Utility Model Showa 49-20082 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) H01H 33/66 H01R 35/02

Claims (6)

(57) [Claims] 1. A flexible conductor having one end connected to a movable portion conductor of a switch, and a good conductive material connected to an external conductor laminated in a sandwich on both surfaces of the other end of the flexible conductor. A pair of terminal conductors, and an insulating support member for holding the terminal conductors and supporting the flexible conductors, wherein the pair of terminal conductors are connected via a connecting member formed integrally with the terminal conductors.
Terminal conductor structure of the switch, characterized in that linked Te. 2. The terminal conductor structure of a switch according to claim 1, wherein each of said flexible conductor and said terminal conductor has a
A member for preventing a flexible conductor from coming off between a pair of terminal conductors.
A terminal conductor structure for a switch, wherein a joint portion is formed integrally . 3. The terminal conductor structure for a switch according to claim 1, wherein the flexible conductor and the terminal conductor are each integrally formed with an engaging portion for preventing the flexible conductor from rotating. Characteristic switch terminal conductor structure. 4. The terminal conductor structure of a switch according to claim 1, wherein a guide portion is provided at a portion of the terminal conductor where a flexible portion of the flexible conductor contacts. . 5. The terminal conductor structure for a switch according to claim 1, wherein an opening side of the connected terminal conductor is divergent.
And inserting the flexible conductor between the pair of terminal conductors.
After that, the connecting member is plastically deformed to form a pair of terminal conductors.
A terminal conductor structure for a switch, wherein the terminal conductor structure is substantially parallel . 6. A flexible conductor having one end connected to a movable portion conductor of a switch, and a good conductive material connected to an external conductor laminated in a sandwich on both surfaces of the other end of the flexible conductor. A pair of terminal conductors, and an insulating support member that holds the terminal conductors and supports the flexible conductors, and connects and integrates the pair of terminal conductors; A hole and a projection for preventing the flexible conductor from coming off, a notch and a connecting portion for preventing the flexible conductor from rotating, and a flexible portion of the flexible conductor of the terminal conductor portion is provided. A terminal conductor structure for a switch, wherein a guide portion is provided at a contact portion.