JP2003257291A - Switch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a switch with improved assembling efficiency, assembled by simple operation. <P>SOLUTION: A plurality of lighting arresters 24 and PD 25 are housed in an inside equipment housing member 21 made of synthetic resin with insulating property, capable of collectively housing a plurality of lighting arresters 24 and PD 25, and fixed to the inside of a main body case 12, therefore, the plurality of lighting arresters 24 and the PD 25 can be collectively housed in and fixed to the main body case 12 respectively. Accordingly, different from the case of individually fixing the plurality of lighting arresters 24 and the PD 25, the number of the assembling process is reduced and the assembling process is simplified. Further, assembling efficiency of the switch 11 is improved. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch having various internal devices such as a lightning arrester and a voltage detecting capacitor.

[0002]

2. Description of the Related Art The following switch has been conventionally known. That is, the load side and power source side bushings facing each phase are penetratingly supported on both side walls of the main body case of the switch. A fixed electrode is provided on the inner end of the power supply side bushing, and a movable electrode is provided on the inner end of the load side bushing so as to be rotatable and capable of coming into contact with and separating from the fixed electrode. There is. The movable electrode is operatively connected to an opening / closing mechanism section including a plurality of links, and the movable electrode is brought into contact with and separated from the fixed electrode as the opening / closing mechanism section is driven. Depending on the type of switch, a lightning arrester and a voltage detecting capacitor are provided inside a grounded main body case.

[0003]

However, the conventional switch has the following problems. That is, when the lightning arrester and the voltage detecting capacitor are incorporated in the main body case, it is necessary to individually cover both with an insulator and to mount them inside the main body case. Therefore, there has been a problem that the assembling work of the switch becomes complicated, and the assembling work efficiency is reduced.

The present invention has been made to solve the above problems, and its purpose is to simplify the assembling work,
Consequently, it is to provide a switch which can improve the efficiency of the assembly work.

[0005]

According to a first aspect of the present invention, a load side charging section for each phase and a power source side charging section are housed together in a main body case, and the load side charging section for each phase is accommodated. And a switch adapted to accommodate a plurality of internal devices provided so as to respectively correspond to the power source side charging section, the plurality of internal devices are integrally covered with an insulating synthetic resin material, The main point is that it is fixed inside the case.

According to a second aspect of the invention, in the switch according to the first aspect, a fixed electrode that constitutes a power source side charging portion and a movable electrode that constitutes a load side charging portion are paired in the main body case. The opening and closing parts for each phase forming the are housed, and each opening and closing part is supported and fixed in the main body case through each internal device integrally covered with the synthetic resin material. To do.

According to a third aspect of the present invention, in the switch according to the first or second aspect, the internal equipment includes a plurality of types of equipment provided for each phase, and each internal equipment is synthesized as described above. The configuration integrally covered with a resin material includes a single or a plurality of internal device accommodating members formed of the synthetic resin material and capable of accommodating a plurality of plural kinds of internal devices, respectively. The gist of the present invention is to accommodate at least one of a plurality of types of internal equipment.

(Operation) According to the invention described in claim 1,
The plurality of internal devices are integrally covered with an insulating synthetic resin material and fixed inside the main body case. Therefore, unlike the case where a plurality of internal devices are individually fixed in the main body case, the number of assembly work steps is reduced.

According to the invention described in claim 2, claim 1
In addition to the operation of the switch described in (1), the opening / closing part for each phase forming a pair with the fixed electrode and the movable electrode is provided in the main body case through each internal device integrally covered with the synthetic resin material. It is supported and fixed to. Therefore, it is not necessary to provide another member for supporting and fixing each opening / closing portion in the main body case.

According to the invention of claim 3, claim 1
Alternatively, in addition to the operation of the switch according to claim 2, at least one of the plurality of types of internal devices is integrally covered with the synthetic resin material by being housed in a single or a plurality of internal device housing members. Be seen.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment in which the present invention is embodied in a switch will be described below with reference to FIGS.

As shown in FIGS. 1 and 2, a power source side bushing 13 and a load side bushing 14 penetrate through both side walls of a main body case 12 of a switch 11 facing each other for each of the three phases. It is supported.

Each bushing 1 is attached to a plurality of bolts (not shown) projecting from the bushing penetration surface of the main body case 12.
Flange pressing fittings 15 that cover the flange portions of 3, 3 are inserted, and the bushings 13, 14 are fixed to the main body case 12 by tightening nuts (not shown) on the bolts.

A pair of power source side conductors 16 and 16 project from the inner end portion of the power source side bushing 13 at a predetermined interval, and a pair of load side conductors at the inner end portion of the load side bushing 14. 17 and 17 are provided so as to be spaced apart from each other by a predetermined distance.
Both the conductors 16 and 17 are made of plate-shaped flexible conductors, and the entire conductors 16 and 17 are respectively bent in the interphase direction (vertical direction in FIG. 2).

(Internal Equipment Housing Member) As shown in FIGS. 1 and 2, two internal equipment housing members 21 are arranged in parallel on the inner bottom surface of the main body case 12 at a predetermined interval in the in-phase direction. The internal device accommodating member 21 is integrally formed by injection-molding a synthetic resin material having an insulating property, and has a flat plate-shaped fixing portion 22 and three standing portions provided on the upper surface of the fixing portion 22 at predetermined intervals. And a cylindrical housing portion 23. Each housing portion 23 is arranged so as to correspond to the inner end portion of each bushing 13, 14. A plurality of bolts are erected on the inner bottom surface of the main body case 12, and the internal equipment housing member 21 is inserted into each bolt and tightened with a nut from above so that the inner equipment housing member 21 is attached to the inner bottom surface of the main body case 12. It is fixed in contrast.

As shown in FIGS. 3 and 4, the accommodating portion 23 includes a lightning arrester accommodating portion 23a, a voltage detecting capacitor accommodating portion (hereinafter referred to as "PD accommodating portion") 23b, and both accommodating portions 23a and 23b. A pair of flat plate-like connecting portions 23c to be connected
And has a flat oval cylindrical shape. Figure 1
As shown in, the lightning arrester housing portion 23a and the voltage detection capacitor housing portion 23b are each formed in a cylindrical shape with an open top. A lightning arrester 24 and a voltage detecting capacitor (hereinafter, referred to as "PD") are provided in both of the accommodating portions 23a and 23b.
Say. ) 25 are accommodated, and both accommodating portions 23a, 2
The upper openings of 3b are closed by lids 26a and 26b, respectively. Both lids 26a and 26b are also made of an insulating synthetic resin material. That is,
The arrester 24 and the PD 25 are integrally covered with a synthetic resin material having an insulating property.

(Power Supply Side Internal Equipment Housing Member) As shown in FIGS. 2 and 4, in the power supply side internal equipment housing member 21, the upper portion of each housing portion 23, that is, the upper surface of the lid 26a of each arrester housing portion 23a. Each of the L-shaped power supply side conductive members 3
1 is fixed by a pair of bolts 32, 32. The power supply side conductive member 31 is integrally formed of a conductive metal material, and has a fixing portion 33 that is directly fixed to the upper surface of the lid 26a, and a connecting portion 34 that is perpendicular to the fixing portion 33. , And a fixed electrode 35 protruding from the upper portion of the load side edge of the connecting portion 34. The connecting portion 34 is sandwiched between the both power source side conductors 16, 16 and penetrates the bolt 36 from the side of one power source side conductor 16 and the nut 37 from the side of the other power source side conductor 16. By tightening, the power source side conductors 16 and 16 are fixed to the connecting portion 34.

The inner end of the bolt 32 is screwed into a tip charging portion (not shown) of the lightning arrester 24. That is, the tip charging portion of the lightning arrester 24 includes the bolt 32 and the power source side conductive member 3
It is connected to the power source side conductor 16 via 1. Also,
In the internal device housing member 21 on the power supply side, the PD housing portion 2
One end of the conductor 38 is attached to the bolt 39 on the upper surface of the lid 26b of 3b.
Is fixed by the power supply side conductive member 3 at the other end as well.
The bolt 36 and the nut 37 are fastened and fixed to the side surface of the first connecting portion 34 together.

The inner end of the bolt 39 is screwed into the leading end charging portion (not shown) of the PD 25. That is, P on the power supply side
The tip charging part of D25 is connected to the power source side conductor 16 via the bolt 39 and the conductor 38. On the power supply side,
The grounding portions (not shown) of the lightning arrester 24 and the PD 25 are respectively connected to the main body case 12 which passes through the internal device housing member 21 and is grounded. In other words, the fixed electrode 35
Is a lightning arrester 2 covered with an insulating synthetic resin material
4 and PD 25, and is supported and fixed to the main body case 12.

(Internal Device Housing Member on Load Side) As shown in FIGS. 2 and 3, in the internal device housing member 21 on the load side, the upper portion of each housing portion 23, that is, the upper surface of the lid 26a of each arrester housing portion 23a. Each of the L-shaped load side conductive members 4
1 is fixed by a pair of bolts 42, 42. The load-side conductive member 41 is integrally formed of a conductive metal material, and has a fixed portion 43 that is directly fixed to the upper surface of the lid 26 a and a support portion 44 that is perpendicular to the fixed portion 43. Is equipped with.

The supporting portion 44 is composed of the conductors 17 and 1 on both load sides.
It is sandwiched between the two load side conductors 17 by penetrating the bolt 45 from one side of the load side conductor 17 and tightening the nut 46 (see FIG. 2) from the side of the other load side conductor 17. The conductors 17, 17 are fixed to the support portion 44. A movable electrode 47 is rotatably supported on the support portion 44 via a shaft 48. Movable electrode 4
Reference numeral 7 is composed of two contact blades arranged in parallel, and the fixed electrode 35 can be sandwiched between them.

The inner end of the bolt 42 is screwed onto the charging end of the lightning arrester 24. That is, the tip charging portion of the lightning arrester 24 is connected to the load-side conductor 17 via the bolt 42 and the load-side conductive member 41. In addition, in the load-side internal device housing member 21, one end of a conductor 49 is fixed to the upper surface of the lid 26b of the PD housing portion 23b by a bolt 50, and the other end is the side surface of the support portion 44 of the load-side conductive member 41. On the other hand, the bolts 45 and the nuts 46 are jointly fixed.

The inner end of the bolt 50 is screwed into the leading end charging portion (not shown) of the PD 25. That is, P on the load side
The tip charging portion of D25 is connected to the load-side conductor 17 via the bolt 50 and the conductor 49. On the load side,
The grounding portions (not shown) of the lightning arrester 24 and the PD 25 are respectively connected to the main body case 12 which passes through the internal device housing member 21 and is grounded. In other words, the movable electrode 47
Is a lightning arrester 2 covered with an insulating synthetic resin material
4 and PD 25, and is supported and fixed to the main body case 12.

(Opening / Closing Link Mechanism) On the other hand, as shown in FIG. 1, in the upper part of the main body case 12, an opening / closing link mechanism (not shown) composed of a plurality of links and the like is provided to the main body case 12.
A rotary shaft 51 operatively connected to an external operation handle (not shown) is provided, and a lever 52 is fixed to the rotary shaft 51 so as to be integrally rotatable. One end of a drive link 53 is rotatably connected to the tip of the lever 52, and the other end of the drive link 53 is rotatably connected near the center of the movable electrode 47. Therefore, with the opening / closing operation of the operation handle, the movable electrode 47 has the same position as the closing position shown by the solid line in FIG. 1 with the shaft 48 as a fulcrum via the opening / closing link mechanism, the rotating shaft 51, the lever 52, and the drive link 53. Move to and from the open position indicated by the chain double-dashed line.

The power source side conductor 16 and the power source side conductive member 3
1 and the fixed electrode 35 respectively constitute a power source side charging unit. The load-side conductor 17, the load-side conductive member 41, and the movable electrode 47 each form a load-side charging unit. The fixed electrode 35 and the movable electrode 47 form an opening / closing part. Each accommodation portion 23 of the internal device accommodation member 21 constitutes an electrode support member. Lightning arrester 24 and voltage detecting capacitor 25
Respectively configure internal devices.

(Effects of Embodiment) Therefore, according to this embodiment, the following effects can be obtained. (1) A plurality of lightning arresters 24 and PD 25 are integrally covered with a synthetic resin material having an insulating property, and the main body case 1
It was fixed within 2. Specifically, the plurality of lightning arresters 2 are formed of a synthetic resin material having an insulating property.
The plurality of lightning arresters 24 and PD 25 are housed in the internal device housing member 21 capable of housing 4 and PD 25 collectively, and are fixed in the main body case 12. Therefore, the plurality of lightning arresters 24 and the PD 25 can be collectively housed and fixed in the main body case 12. Therefore, unlike the case where a plurality of lightning arresters 24 and PDs 25 are individually fixed in the main body case 12, the number of assembling work steps is reduced, the assembling work is simplified, and the assembling work efficiency can be improved.

(2) Lightning arrester 24 and P in which the fixed electrode 35 (strictly speaking, the power source side conductive member 31) and the movable electrode 47 are integrally covered with a synthetic resin material having an insulating property.
It is arranged to be supported and fixed in the main body case 12 via D25. Specifically, the fixed electrode 35 or the movable electrode 47 is supported and fixed to the upper portion of each housing portion 23 of the internal device housing member 21 housing the lightning arrester 24 and the PD 25. That is, each housing portion 23 of the internal device housing member 21 is fixed to the fixed electrode 3
5 or the movable electrode 47 also serves as an electrode supporting member for supporting and fixing the movable electrode 47 in the main body case 12. Therefore, unlike the case where another member for supporting and fixing the fixed electrode 35 or the movable electrode 47 in the main body case 12 is provided, the number of parts can be reduced.

(3) The lightning arrester 24 and the PD 25 are integrally covered with a synthetic resin material having an insulating property. That is, the lightning arrester 24 and the PD 25 are housed in the lightning arrester housing portion 23a and the PD housing portion 23b, respectively, and the lid 26
It was closed by a and 26b. Therefore, the insulation between the arrester 24 and the PD 25 is ensured, and the arrester 24
It is possible to shorten the arrangement interval between the PD 25 and the PD 25 in the interphase direction. As a result, the length of the switch 11 in the interphase direction can be shortened.

(4) Power source side conductive member 31 having fixed electrode 35 and load side conductive member 41 supporting movable electrode 47.
The main body case 1 via the internal device housing member 21
It was fixed within 2. That is, the power source side conductive member 31 and the load side conductive member 41 are set at the preset mounting position of the power source side conductive member 31 (the upper surface of the lid 26a) and the preset mounting position of the load side conductive member 41 (the upper surface of the lid body 26b). The fixed electrode 35 and the movable electrode 47 are positioned by mounting them respectively. Therefore, the power supply side bushing 13
Unlike the case where the fixed electrode 35 and the movable electrode 47 are supported and fixed to the inner end of the load side bushing 14, centering work (center axis alignment work) of the fixed electrode 35 and the movable electrode 47 for each phase is performed. It can be simplified and the assembling work efficiency can be improved.

(5) The lightning arrester 24 and the PD 25 are each covered with an insulating synthetic resin material. The lightning arrester 24 and the PD 25 are housed in the internal device housing member 21 formed by injection molding a synthetic resin material having an insulating property. Therefore, the manufacturing cost can be reduced as compared with the case where the lightning arrester 24 and the PD 25 are respectively covered with the insulator. In general, an insulator product has a larger number of manufacturing steps and a higher manufacturing cost than a synthetic resin product manufactured by injection molding.

(6) Lightning arrester housing 23a and PD housing 2
3b, a pair of connecting portions 23c, 23 facing each other
It was made to connect by c. Therefore, the support rigidity of the arrester housing portion 23a and the PD housing portion 23b is ensured, and the power supply side conductive member 31 and the load side conductive member 41, and thus the fixed electrode 35 and the movable electrode 47 can be stably supported.

(Other Example) The above embodiment may be modified as follows. In the present embodiment, both the arrester 24 and PD 25 of each phase are collectively housed in the internal device housing member 21, but only one of the arrester 24 and PD 25 may be housed. For example, accommodating the lightning arrester 24, P
Do not house D25. On the contrary, the PD 25 is accommodated and the lightning arrester 24 is not accommodated. Even in this case, either one of the arrester 24 and the PD 25 for each phase can be collectively housed and fixed in the main body case 12, and the assembling work efficiency can be improved.

As shown in FIG. 5, on the power source side and the load side, there are provided internal equipment housing members 61 capable of housing the lightning arrester 24 and PD 25 for one phase, respectively. You may make it prepare for each 3 phases by the side. Even in this case, the assembling work of the lightning arrester 24 and the PD 25 can be simplified as compared with the case where the lightning arrester 24 and the PD 25 are individually attached.

As shown in FIG. 6, it is possible to provide an internal equipment housing member 62 capable of housing the lightning arrester 24 and PD 25 for each phase on the power supply side and each phase on the load side collectively. In this way, all lightning arresters 24 and PDs 25
Can be collectively fixed in the main body case 12. Therefore, the work of assembling the lightning arrester 24 and the PD 25 can be further simplified.

As shown in FIG. 7, an internal equipment accommodating member 63 capable of accommodating the pair of lightning arresters 24 and the pair of PDs 25 in phase with each other may be provided. With this configuration, the pair of lightning arresters 24 and the pair of PDs 25 in the same phase can be collectively fixed in the main body case 12. Therefore, the arrester 24 and the PD
It is possible to simplify the work of assembling the lightning arrester 24 and the PD 25, as compared with the case where each of the 25 is individually attached.

(Supplementary Notes) Next, the technical ideas that can be understood from the above-described embodiment and other examples will be additionally described below. -In the main body case, an opening / closing portion for each phase that forms a pair with a fixed electrode that constitutes the power source side charging portion and a movable electrode that constitutes the load side charging portion is accommodated, and the load side charging portion and the power source side of each phase. In a switch for accommodating a plurality of internal devices provided so as to correspond to respective charging parts, each of the switch parts is supported and fixed in the main body case through an electrode support member, and the electrode support member is fixed. The switch is designed to accommodate multiple internal devices. According to this configuration, the electrode support member also serves as the internal device housing member that houses the internal device, so that the number of parts can be reduced.

The switch according to claim 1, wherein the internal equipment for each phase on the power source side and the internal equipment for each phase on the load side are integrally covered with the synthetic resin material.

[0038]

According to the present invention, a plurality of internal devices are collectively housed and fixed in the main body case, so that the assembling work is simplified and the assembling work efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a plan sectional view of a switch according to the present embodiment.

2 is a cross-sectional view taken along line 1-1 in FIG.

FIG. 3 is a perspective view of a main part of a load-side internal device housing member according to the present embodiment.

FIG. 4 is a perspective view of a main part of an internal device housing member on the power supply side in the present embodiment.

FIG. 5 is a perspective view of an internal device housing member according to another embodiment.

FIG. 6 is a perspective view of an internal device housing member according to another embodiment.

FIG. 7 is a perspective view of an internal device housing member according to another embodiment.

[Explanation of symbols]

11 ... Switch, 12 ... Main body case, 16 ... Power source side conductor which constitutes the power source side charging section, 17 ... Load side conductor which constitutes the load side charging section, 21, 61, 62, 63 ... Internal equipment housing member (Electrode support member), 24 ... Lightning arrester constituting internal equipment, 25 ... Capacitor for voltage detection (P) constituting internal equipment
D), 31 ... Power source side conductive member constituting power source side charging section, 35 ... Fixed electrode constituting power source side charging section and opening / closing section, 41 ... Load side conductive member constituting load side charging section, 47 ... Load side A movable electrode that constitutes the charging section and the opening / closing section.

Continued front page    (72) Inventor Mitsuhiro Kitaori             Energy, No. 1, Upper Hand, Inuyama, Aichi Prefecture             Port Co., Ltd. (72) Inventor Takahiro Ogiwara             Energy, No. 1, Upper Hand, Inuyama, Aichi Prefecture             Port Co., Ltd.

Claims (3)

[Claims] 1. The main body case accommodates the load side charging section and the power source side charging section of each phase collectively, and is provided so as to correspond to the load side charging section and the power source side charging section of each phase, respectively. In a switch that accommodates a plurality of internal devices, a switch in which a plurality of internal devices are integrally covered with an insulating synthetic resin material and fixed in the main body case. 2. An opening / closing section for each phase, which is paired with a fixed electrode forming a power source side charging section and a movable electrode forming a load side charging section, is housed in the main body case. The switch according to claim 1, wherein the switch is supported and fixed in the main body case through each internal device integrally covered with the synthetic resin material. 3. The internal equipment includes a plurality of types of equipment provided for each phase, and a structure in which each internal equipment is integrally covered with the synthetic resin material is formed of the synthetic resin material and a plurality of types. A single or a plurality of internal device accommodating members capable of accommodating only a plurality of internal devices, and the internal device accommodating member accommodates at least one of a plurality of types of internal devices. The switch according to claim 1 or 2.