JP2008067597A - Connector, inter-board connecting member using this connector, and cable terminal joint using above-mentioned connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To decrease size of diameter in a connector to facilitate its attachment on an outer wall of an apparatus. <P>SOLUTION: The connector has an insulating material molding with a rubberlike elasticity, and a coating layer overlies in the outer periphery of the insulating material molding. Also, coned portions overlie the outer periphery of the opening end of the horizontal/vertical mounting hole of the insulating material molding, respectively. In the outer periphery of the coned portion, a stress cone with rubberlike elasticity is integrally formed with the insulating material molding. An interboard connecting member has a T-connector, first and second L-connectors disposed with a gap at both sides of the T-connector, and first and second insulated bus bars plugged in between these T- and L-connectors. A cable terminal connection has a connector inserted into a bushing protruded from the outer wall of the apparatus, and a power cable is mounted in the horizontal/vertical mounting hole of this connector. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a connector, a board-to-board connecting member using the connector, and a cable terminal connecting portion using the connector, and is particularly useful for making a board-to-board connection of a cubicle type gas insulated switchgear (GIS). The present invention relates to an intermediate connector, an inter-board connecting member using this connector, and a cable terminal connecting portion using the connector.

  Recently, cubicle type gas-insulated switchgears are frequently used from the viewpoint of labor saving and shortening the construction period of substation facilities. In such a gas-insulated switchgear, a T-type connector having a T-branch conductor that is electrically connected to the equipment is attached to the outer wall of each cubicle, and a power cable is formed between these T-type connectors. It is electrically connected with an insulated bus.

  However, in the inter-board connection using such a power cable, since the insulated bus is substantially rigid and cannot be bent easily, the T-connector mounting interval, that is, the inter-board distance is set to some extent. Therefore, there is a problem that the gas insulated switchgear becomes large, and after arranging the insulated bus between a plurality of T-shaped connectors, it is attached to the outer circumference of the insulated bus in advance. There is a problem that a complicated work procedure is required, for example, the two stress cones must be moved and mounted in the receiving holes of the corresponding T-shaped connectors.

  For this reason, the applicant of the present invention previously has a simple structure, can efficiently and quickly connect and disconnect the insulated bus, and can further reduce the size of the gas insulated switchgear. And has filed a patent application (Japanese Patent Application No. 11-82042).

  As shown in FIG. 5, the inter-board connecting member includes a T-shaped connector 100, first and second L-shaped connectors 200 and 200 that are spaced apart on both sides of the connector, and these connectors. First and second insulating buses 300 and 300 are electrically connected to each other by plug-in.

  The T-type connector 100 includes a T-type connection conductor 130 having a horizontal connection hole 110 at both ends of a horizontal portion and a vertical connection hole 120 at an end of the vertical portion, and an internal semiconductive layer 140 on the outer periphery of the T-type connection conductor 130. And a T-type insulating molded body 170 each having a horizontal mounting hole 150 communicating with the horizontal connection hole 110 and a vertical mounting hole 160 communicating with the vertical connection hole 120, and the T-shaped insulating molded body 170. And an outer semiconductive layer 180 provided integrally on the outer periphery of the substrate. The electric field relaxation layer 180 is provided in regions corresponding to both ends of the horizontal portion and the lower end of the vertical portion of the external semiconductive layer 180.

  Further, the first and second L-type connectors 200 are respectively provided with an L-type connection conductor 230 having a horizontal connection hole 210 at the end of the horizontal portion and a vertical connection hole 220 at the end of the vertical portion, and an L-type connection. An L-shaped insulating molded body that is integrally provided on the outer periphery of the conductor 230 via the inner semiconductive layer 240 and has a horizontal mounting hole 250 that communicates with the horizontal connection hole 210 and a vertical mounting hole 260 that communicates with the vertical connection hole 220. 270 and an outer semiconductive layer 280 provided integrally on the outer periphery of the L-shaped insulating molded body 270. Note that an electric field relaxation layer 281 is provided in regions corresponding to the horizontal end and the vertical bottom end of the external semiconductive layer 280, respectively.

  The first and second insulated buses 300 respectively include a center conductor 310, an internal semiconductive layer 320 provided on the outer periphery of the center conductor 310 with both ends exposed, and the internal semiconductive layer 320. An insulator 330 provided on the outer periphery and an external semiconductive layer 340 provided on the outer periphery of the central portion of the insulator 330 are configured. In addition, annular concave grooves are formed on the outer circumferences of both ends of the center conductor 310, and tape-shaped conductor connectors 311 are respectively disposed along the circumferential direction in the respective concave grooves.

On the other hand, the cubicle type gas insulated switchgear includes three rectangular containers 400 filled with SF ₆ gas, and each rectangular container 400 has an electric device (not shown) for each unit circuit. A bushing 420 having an electrode 410 electrically connected to an electric device is mounted on the outer wall 401 of each rectangular container 400. An annular concave groove is formed on the outer periphery of the end portion of each electrode 410, and a tape-like conductor connector 411 is disposed in the concave groove along the circumferential direction.

  Next, a method for assembling the inter-board communication member and a manner of attaching the inter-board communication member to the rectangular container will be described.

  First, one end of the first and second insulating buses 300 is mounted in each horizontal mounting hole 150 of the T-shaped connector 100, and one end of the central conductor 310 of the first and second insulating buses 300 is mounted. Plug-in connection is made to each horizontal connection hole 110 of the T-type connection conductor 130. As a result, the central conductors 310 of the first and second insulated buses 300 are electrically connected to the T-type connection conductor 130 via the conductor connectors 311.

  Subsequently, the other ends of the first and second insulating buses 300 are respectively mounted in the horizontal mounting holes 250 of the corresponding L-shaped connectors 200, and the central conductors 310 of the first and second insulating buses 300 are connected. The other end is plug-in connected to the horizontal connection hole 210 of the L-shaped connection conductor 230. As a result, the central conductors 310 of the first and second insulating buses 300 are electrically connected to the L-type connection conductor 230 via the conductor connectors 311.

  The board-to-board connecting member assembled as described above includes the vertical mounting holes 160 of the T-shaped connector 100 and the vertical mounting holes 260 of the first and second L-shaped connectors 200. Lowering all at once toward the bushing 420 side, the electrode 410 of each bushing 420 is plug-in connected to the vertical connection holes 120 and 220 of the T-type connection conductor 130 and L-type connection conductor 230, respectively. As a result, the T-type connection conductor 130 and the first and second L-type connection conductors 230 are electrically connected to the electrical devices in the rectangular container 400 via the conductor connectors 411, respectively.

  FIG. 6 shows a state in which the inter-board communication member having such a configuration is disposed on the top outer wall of the rectangular container. In the same figure, symbol R is an R-phase inter-board connecting member, S is an S-phase inter-board connecting member, T is a T-phase inter-board connecting member, and a connector constituting these inter-board connecting members, That is, the three T-shaped connectors 100, the three first L-shaped connectors 200, and the three second L-shaped connectors 200 are arranged on the top outer wall of the rectangular container while being obliquely shifted. It is installed. These connectors are electrically connected to each other by the first and second insulating buses 300.

  In the inter-board communication member having such a configuration, the inter-board communication member is assembled in advance, and since this is lowered from above and attached to the equipment outer wall, the insulation bus can be shortened according to the inter-board distance, Further, since there is no stress cone on the outer periphery of the insulated bus, the work of mounting the stress cone on the outer periphery of the insulated bus and the work of moving it toward the connector become unnecessary.

  By the way, in the inter-board communication member having such a configuration, since the space of the mounting portion of the inter-board communication member, that is, the space of the top outer wall of the rectangular container is narrow, the connector constituting the inter-board communication member is further increased. Miniaturization is desired.

  For this reason, a method of reducing the thickness of the external semiconductive layer constituting each of the T and L type connectors has been devised. However, such a method has the following drawbacks, that is, T, The internal semiconductive layer, the insulating molded body, and the external semiconductive layer constituting each L-shaped connector are integrally formed in a so-called three-layer mold configuration of semiconductive rubber, insulating rubber, and semiconductive rubber, respectively. Therefore, it is necessary to secure a certain thickness when forming the external semiconductive layer. For this reason, there is a problem that the diameter of the connector increases in proportion to the thickness of the external semiconductive layer. In addition, when a semiconductive rubber tape is wound around the outside of an insulating molded body and this is pressed with a mold to form an external semiconductive layer, a product having a complicated shape such as a T or L type connector. However, it is difficult to neatly wind a semiconductive rubber tape, and it takes a lot of trouble, and the thickness of the semiconductive layer becomes uneven, resulting in voids in the semiconductive layer, There is also a problem that the interface between the conductive layer and the insulating layer is disturbed.

  The present invention has been made to solve the above-mentioned problems, and can further reduce the diameter of the above-mentioned connector and ensure the necessary surface pressure at the interface between the mounting hole of the connector and the insulating busbar. It is an object of the present invention to provide a connector, an inter-board connecting member using the connector, and a cable terminal connecting portion using the connector.

  The connector according to the first aspect of the present invention includes a mounting hole for receiving an insulating bus or a cable at the end, and the diameter of the mounting hole is increased from the opening end to the center on the opening end side of the mounting hole. An insulating molded body having a rubber-like elasticity having a cone-like portion and a cylindrical stress cone having a rubber-like elasticity having a cone-like portion corresponding to the cone-like portion at the tip, and having a cone shape of a stress cone The part is in close contact with the cone-shaped part of the insulating molded body and is provided integrally with the insulating molded body, and the outer periphery of the insulating molded body is provided with a coating layer of semiconductive paint straddling the outer periphery of the stress cone. is there.

  The T-shaped connector according to the second aspect of the present invention includes a horizontal mounting hole at both ends of the horizontal portion and a vertical mounting hole at the end of the vertical portion, and each of the horizontal mounting hole and the vertical mounting hole of the insulating molded body. An insulating molded body exhibiting rubber-like elasticity having a cone-shaped portion whose diameter increases from the opening end side toward the center portion on the outer periphery of the opening end portion side, and a conical portion corresponding to the cone-shaped portion at the tip end portion A cylindrical stress cone that exhibits rubber-like elasticity, and the conical portion of the stress cone is provided in one piece with the insulating molded body in close contact with the cone-shaped portion of the insulating molded body, and is formed on the outer periphery of the insulating molded body. Is provided with an application layer of a semiconductive paint straddling the outer periphery of the stress cone.

  The L-shaped connector according to the third aspect of the present invention has a horizontal mounting hole at the end of the horizontal portion and a vertical mounting hole at the end of the vertical portion, and the horizontal mounting hole and the vertical mounting hole of the insulating molded body are opened. An insulating molded body exhibiting rubber-like elasticity having a cone-shaped portion whose diameter increases from the opening end side toward the bent portion on the outer periphery of the end portion side, and a conical portion corresponding to the cone-shaped portion at the tip end portion A cylindrical stress cone that exhibits rubber-like elasticity, and the conical portion of the stress cone is provided in one piece with the insulating molded body in close contact with the cone-shaped portion of the insulating molded body, and is formed on the outer periphery of the insulating molded body. Is provided with an application layer of a semiconductive paint straddling the outer periphery of the stress cone.

  An inter-board connecting member according to a fourth aspect of the present invention includes a T-shaped connector according to the second aspect, and first and second third aspect elements spaced apart on both sides of the T-shaped connector. L-shaped connector, a first insulating bus mounted between one horizontal mounting hole of the T-shaped connector and a horizontal mounting hole of the first L-shaped connector, and the other horizontal mounting of the T-shaped connector A hole and a second insulating busbar mounted between the horizontal mounting holes of the second L-shaped connector.

  An inter-board connecting member according to a fifth aspect of the present invention includes an L-shaped connector according to the third aspect, and first and first elements according to the second aspect that are spaced apart from each other on the right side of the L-shaped connector. 2 T-shaped connectors, a first insulating busbar mounted between a horizontal mounting hole of the L-shaped connector and one horizontal mounting hole of the first T-shaped connector, and a first T-shaped connector A second insulation bus mounted between the other horizontal mounting hole and one horizontal mounting hole of the second T-type connector, and an insulation mounted in the other horizontal mounting hole of the second T-type connector. And a stopper.

  In the cable termination connecting portion according to the sixth aspect of the present invention, the horizontal mounting hole of the L-shaped connector according to the third aspect is fitted into the bushing protruding from the outer wall of the device, and the vertical mounting hole of the L-shaped connector. A power cable is attached to the.

  In the cable termination connecting portion according to the seventh aspect of the present invention, the vertical mounting hole of the T-shaped connector of the second aspect is fitted into the bushing protruding from the outer wall of the device, and one horizontal of the T-shaped connector is fitted. A power cable is mounted in the mounting hole, and an insulating plug is mounted in the other horizontal mounting hole.

  According to the connector of the present invention, since the coating layer of the semiconductive paint is provided on the outer periphery of the insulating molded body, and the thickness is not required for forming the coating layer of the semiconductive paint, the diameter of the connector can be reduced, and Since the stress cone exhibiting rubber-like elasticity is provided integrally with the insulating molded body on the outer periphery on the opening end side of the mounting hole of the insulating molded body exhibiting rubber-like elasticity, the mounting hole of the insulating molded body is provided. A radial tightening force on the opening end side can be ensured. Furthermore, even a connector having a complicated shape can be easily applied with a semiconductive paint, and voids are generated in the semiconductive paint application layer, and the semiconductive paint application layer and the insulating molded body There is no risk of turbulence at the interface.

  Further, according to the inter-board connecting member of the present invention, the inter-board connecting member is assembled in advance, and is lowered from above to be mounted on the outer wall of the equipment, so that the insulation bus can be shortened according to the distance between the boards. In addition, since the insulation bus can be easily mounted in the mounting holes of each connector, the inter-panel connecting member can be assembled easily and quickly, and the diameter of each connector is reduced, so that the mounting space is reduced. Even if it is narrow, the inter-board connecting member can be easily attached to the outer wall of the device.

  Furthermore, according to the cable termination connecting portion of the present invention, since the connector having a reduced diameter is used, the connector can be easily attached even if the installation space is narrow.

  Hereinafter, preferred embodiments of a connector according to the present invention, an inter-board connecting member using the connector, and a cable terminal connecting portion using the connector will be described with reference to the drawings.

  1A is a cross-sectional view of a T-shaped connector according to the present invention, FIG. 1B is a cross-sectional view along line AA of FIG. 1A, and FIG. 1C is an L-shaped according to the present invention. Sectional drawing of the connector is shown.

  1 (a) and 1 (b), a T-shaped connector 1 according to the present invention includes a connecting conductor 11 and ethylene propylene rubber (hereinafter referred to as “EP rubber”) provided outside the connecting conductor 11. And an inner semiconductive layer 13 made of semiconductive EP rubber is integrally formed on the inner periphery of the central portion of the insulating molded body 12, and carbon or the like is blended on the outer peripheral surface. A semiconductive coating layer 14 is provided.

  The connection conductor 11 has a T-shape as a whole. Horizontal connection holes 11a into which a center conductor of an insulating bus described later can be inserted at both ends of the horizontal portion, and are described later at the end of the vertical portion. Vertical connection holes 11b into which bushing electrodes to be inserted can be inserted.

  The insulating molded body 12 has a T-shape as a whole, and a horizontal mounting hole 12a into which an insulating bus bar (to be described later) can be inserted coaxially with the horizontal connection hole 11a of the connection conductor 11 at both ends of the horizontal portion. And it is provided in communication. Further, a vertical mounting hole 12 b into which a bushing described later can be inserted is provided at the end of the vertical portion of the insulating molded body 12 coaxially and in communication with the vertical connection hole 11 b of the connection conductor 11.

  On the other hand, on the outer periphery of the horizontal end portion and the vertical end portion of the insulating molded body 12, cone-shaped portions 12c and 12d each having a diameter increasing from the respective end portions toward the center portion are formed, and these cone-shaped portions 12c are formed. , 12d, stress cones 15a and 15b made of semiconductive EP rubber are molded integrally with the insulating molded body 12 as follows. That is, each of the stress cones 15a and 15b is provided with conical portions 151a and 151b corresponding to the cone-shaped portions 12c and 12d at the distal ends, respectively, and insulation is provided on the base end side of the conical portions 151a and 151b. Cylindrical portions 152a and 152b having substantially the same thickness as the horizontal portion and the vertical portion of the molded body 12 are continuously provided. Thus, the stress cones 15a and 15b are molded integrally with the insulating molded body 12 with the conical portions 151a and 151b being in contact with the outer surfaces of the cone-shaped portions 12c and 12d of the insulating molded body 12, respectively. ing.

  The inner semiconductive layer 13 is molded integrally with the connection conductor 11 and the insulating molded body 12 at portions located on the outer periphery of the horizontal portion of the connection conductor 11 and the outer periphery of the base end portion of the vertical portion.

  Next, as shown in FIG. 1C, the L-shaped connector 2 according to the present invention includes a connection conductor 21 and an insulating molded body 22 made of EP rubber provided outside the connection conductor 21. An inner semiconductive layer 23 made of semiconductive EP rubber is integrally formed on the inner periphery of the bent portion of the insulating molded body 22, and a semiconductive paint coating layer 24 is provided on the outer peripheral surface.

  The connection conductor 21 has an L shape as a whole, and a horizontal connection hole 21a into which a center conductor of an insulating bus described later can be inserted at an end of the horizontal portion, and an end of the vertical portion is described later. Vertical connection holes 21b into which the bushing electrodes to be inserted can be inserted are provided.

  The insulating molded body 22 has an L shape as a whole, and a horizontal mounting hole 22a into which an insulating bus bar to be described later can be inserted coaxially with the horizontal connecting hole 21a of the connecting conductor 21 at the end of the horizontal portion. And it is provided in communication. A vertical mounting hole 22 b into which a bushing described later can be inserted is provided at the end of the vertical portion of the insulating molded body 22 coaxially and in communication with the vertical connection hole 21 b of the connection conductor 21.

  On the other hand, on the outer periphery of the horizontal end portion and the vertical end portion of the insulating molded body 22, cone-shaped portions 22c and 22d each having a diameter increasing toward the bent portion are formed, and these cone-shaped portions are formed. Stress cones 25a and 25b made of semiconductive EP rubber are molded integrally with the insulating molded body 22 on the outer periphery of 22c and 22d as follows. That is, the stress cones 25a and 25b are respectively provided with cone-shaped portions 251a and 251b corresponding to the cone-shaped portions 22c and 22d at the distal ends, and insulation is provided on the base end side of the cone-shaped portions 251a and 251b. Cylindrical portions 252a and 252b having substantially the same thickness as the horizontal portion / vertical portion of the molded body 22 are continuously provided. Thus, the stress cones 25a and 25b are molded integrally with the insulating molded body 22, with the conical portions 251a and 251b being in contact with the outer surfaces of the cone-shaped portions 22c and 22d of the insulating molded body 22, respectively. ing.

  The inner semiconductive layer 23 is molded integrally with the connection conductor 21 and the insulating molded body 22 at portions located on the outer periphery of the horizontal portion of the connection conductor 21 and the outer periphery of the base end portion of the vertical portion.

  In the T and L type connectors having such a structure, a semiconductive paint coating layer is provided on the outer periphery of the insulating molded body, and no thickness is required for forming the semiconductive paint coating layer. The diameter can be further reduced as compared with the T and L type connectors. In addition, a stress cone exhibiting rubber-like elasticity having substantially the same thickness as the horizontal and vertical portions of the insulation-molded body is provided on the outer periphery on the opening end side of the mounting hole of the insulation-molded body exhibiting rubber-like elasticity. Therefore, as in the case of conventional T and L type connectors, it is possible to ensure a radial tightening force on the opening end side of the mounting hole of the insulating molded body. Further, even a connector having a bent portion can be easily applied with a semiconductive paint, and voids are generated in the semiconductive paint application layer, or the semiconductive paint application layer and the insulating molded body There is no risk of turbulence at the interface.

  Here, the stress cone is integrally provided with the insulating molded body on the outer periphery on the opening end side of the mounting hole of the insulating molded body exhibiting rubber-like elasticity. This is to strengthen the power. In other words, if the configuration is such that a semiconductive paint is applied to the outer periphery of the insulating molded body, the thickness at the opening end side of the horizontal and vertical mounting holes of the T-shaped insulating molded body and the L-shaped insulating molded body is reduced, and as a result There is a problem that the radial tightening force at the opening end is weakened. In this regard, in the present invention, by providing a stress cone integrally with the insulating molded body on the outer periphery on the opening end side of the mounting hole of the insulating molded body exhibiting rubber-like elasticity, the radial direction at the opening end is provided. The tightening force increases, and as a result, the surface pressure at the interface between the horizontal / vertical mounting hole and the insulating bus bar increases, and the electrical characteristics are improved.

  Next, an inter-board connecting member using the T and L type connectors of the present invention will be described. 2A is a cross-sectional view of an inter-board connecting member using the T and L type connectors of the present invention, and FIG. 2B is an electrical connection between the T and L type connectors of the present invention. A sectional view of an insulating bus is shown. In FIG. 2A, the same reference numerals are given to the portions common to FIG. In FIG. 2A, the inter-board connecting member in the present invention includes a T-shaped connector 1 and first and second L-shaped connectors 2 disposed on both sides of the T-shaped connector 1. 2 and between one horizontal mounting hole 12a (left side horizontal mounting hole in the figure) of the T-type connector 1 and the horizontal mounting hole 22a of the first L-type connector 2 (left side connector in the figure). The first insulating bus 3 to be connected (the left insulating bus in the figure), the other horizontal mounting hole 12a of the T-type connector 1 (the horizontal mounting hole on the right in the figure), and the second L-shaped A second insulating bus 3 (right insulating bus in the drawing) is provided that is mounted and connected between the horizontal mounting holes 22a of the connector 2 (right connector in the drawing).

  As shown in FIG. 2 (b), the first and second insulated buses 3 are each a central conductor 31 made of a copper pipe or the like, and both ends of the central conductor 31 are exposed to the outer periphery of the central conductor 31. 31 is provided with an insulator 32 made of an epoxy resin provided integrally with 31 and an outer semiconductive layer 33 formed by applying a semiconductive paint on the outer periphery of the central portion of the insulator 32. An annular groove is formed on the outer periphery of both ends of the center conductor 31, and a tape-like conductor connector 34 made of a multi-ram band or the like is disposed in each groove along the circumferential direction. Has been. Here, an inner semiconductive layer (not shown) may be provided on the outer periphery of the central conductor 31 as necessary.

  Thus, first, one end of each of the first and second insulating buses 3 is mounted in each horizontal mounting hole 12a of the T-shaped connector 1, and one end of the central conductor 31 of the first and second insulating buses 3 is mounted. The part is plug-in connected to each horizontal connection hole 11 a of the T-type connection conductor 11. As a result, the central conductors 31 of the first and second insulating buses 3 are electrically connected to the T-type connection conductor 11 via the conductor connectors 35, respectively.

  Subsequently, the other end portions of the first and second insulating buses 3 are respectively mounted in the horizontal mounting holes 22a of the corresponding first and second L-shaped connectors 2 to thereby provide first and second insulations. The other end of the central conductor 31 of the bus 3 is plug-in connected to the horizontal connection hole 22a of the L-type connection conductor 21, respectively. As a result, the central conductors 31 of the first and second insulating buses 3 are electrically connected to the L-type connection conductor 21 via the conductor connectors 35, respectively.

  The inter-board connecting member assembled as described above is attached to the cubicle as follows.

First, the cubicle type gas insulated switchgear is provided with square containers 4 filled with SF ₆ gas in the same manner as the conventional gas insulated switchgear, and each square container 4 has a unit circuit. Electric appliances (not shown) are accommodated, and bushings 42 each having an electrode 41 electrically connected to the electric appliances are mounted on the top outer wall 40 of each rectangular container. An annular groove is formed on the outer periphery of each electrode 41, and a tape-like conductor connector 43 made of a multi-ram band or the like is disposed in the groove along the circumferential direction. Yes.

  Thus, the inter-board connecting member assembled as described above includes the vertical mounting holes 12b of the T-shaped connector 1 and the vertical mounting holes 22b of the first and second L-shaped connectors 2 with corresponding square shapes. The vertical connection holes 11 b and 21 b are respectively fitted to the electrodes 41 of the bushings 42 by being lowered at a stroke toward the bushing 42 side of the container 4. As a result, the T-type connection conductor 11 and the first and second L-type connection conductors 21 are connected to the electrode 41 via the conductor connector 43, and as a result, the electrical equipment in the rectangular container 4 via the electrode 41. Is electrically connected.

  In the inter-board communication member having such a configuration, the inter-board communication member is assembled in advance, and since this is lowered from above and attached to the equipment outer wall, the insulation bus can be shortened according to the inter-board distance, In addition, since the insulation bus can be easily mounted in the mounting holes of each connector, the inter-board connecting member can be assembled easily and quickly, and each connector has a smaller diameter, so the mounting space is narrow. However, the inter-board connecting member can be easily attached to the outer wall of the device.

  FIG. 3 shows a cross-sectional view of an inter-board connecting member according to another embodiment using the T and L type connectors of the present invention. In the figure, the same reference numerals are given to the portions common to FIGS. In FIG. 3, the inter-board connecting member in this embodiment includes an L-shaped connector 2 and first and second T-shaped connectors 1 and 1 that are spaced apart from each other on the right side of the L-shaped connector 2. Between the first T-type connector 1 (the central connector in the figure) and the L-type connector 2 and between the first T-type connector 1 and the second T-type connector 1 (see FIG. Between the middle and right connectors), the first insulation bus 3 (left insulation bus in the figure) and the second insulation bus 3 (right insulation bus in the figure) are the same as in the embodiment shown in FIG. Are electrically connected. In this embodiment, the insulating plug 5 is mounted in the other horizontal mounting hole 12a of the second T-type connector 1.

  In the embodiment shown in FIG. 3, in addition to having the same effect as the inter-board connecting member shown in FIG. 2, the insulating plug attached to the other horizontal mounting hole of the second T-shaped connector is removed and the horizontal mounting is performed. Various characteristics tests of the gas insulated switchgear or the cable line can be performed by plugging in the lead cable for applying electricity to the hole.

  FIG. 4 shows another mounting mode of the T and L type connectors in the present invention. In the figure, the same reference numerals are given to the portions common to FIGS. In FIG. 4, the gas insulated switchgear includes three rectangular containers 4, and Tr is disposed on the right side of the rectangular container 4. And the bushing (not shown) of the structure similar to what was shown in FIG. 2 is each attached to the apparatus side wall 44 of the square container 4 of both sides which comprise a gas insulated switchgear, and the apparatus side wall 45 of the transformer Tr. Among them, the bushing attached to the left square container 4 is fitted with the horizontal mounting hole of the L-shaped connector 2 in the present invention, and the bushing attached to the right square container 4 and the transformer Tr. Are fitted with vertical mounting holes of the T-shaped connector 1 of the present invention. One end portion of the power receiving cable 7 is mounted in the vertical mounting hole of the L-shaped connector 2, and the device communication cable 8 is mounted in one horizontal mounting hole of the T-shaped connector 1 attached to the rectangular container 4. The other end of the device communication cable 8 is mounted in one horizontal mounting hole of the T-type connector 1 attached to the transformer Tr.

  Next, the gas insulated switchgear is supplied with power through the power receiving cable 7, and the three rectangular containers 4 are electrically connected by the inter-panel connecting member 6 attached to the top outer wall 40. Further, the gas insulated switchgear and the transformer Tr are electrically connected by a device communication cable 8. In the figure, 9 is a lead cable for power application plugged into the other horizontal mounting hole of the T-type connector 1 attached to the rectangular container 4, and 5 is a T-type connector attached to the transformer Tr. The insulating plug mounted in the other horizontal mounting hole is shown.

  In this embodiment, since the connector having a reduced diameter is used, the cable terminal connection portion can be easily formed even if the mounting space is narrow. In addition, by connecting a lead cable for applying electricity to the horizontal mounting hole of the T-shaped connector, various characteristics tests of electric equipment or cable lines can be performed.

  In the above-described embodiments, the description is centered on the T-shaped connector and the L-shaped connector. However, the present invention is not limited to the connector having such a shape, and an insulating bus or cable is received at the end. As long as it has a mounting hole that can be used, any shape of connector may be used. Further, the insulating molded body and the internal semiconductive layer constituting the connector are not limited to those formed of an EP rubber material, and may be formed of a silicon rubber material, for example. Further, the mounting position of the inter-panel connecting member is not limited to the top outer wall of the rectangular container, and the formation position of the cable terminal connecting portion is not limited to the device side wall. Further, the insulator constituting the insulating bus bar is not limited to the one made of epoxy resin, and may be made of EP rubber material or the like.

1A is a cross-sectional view of a T-shaped connector according to the present invention, FIG. 2B is a cross-sectional view taken along the line AA of FIG. 1A, and FIG. 1C is an L-shaped connector according to the present invention. Sectional drawing. FIG. 2A is a cross-sectional view of an inter-board connecting member using the connector according to the present invention, and FIG. 2B is a cross-sectional view of an insulating bus connecting the connectors. Sectional drawing of the board connection member which concerns on the other Example using the connector of this invention. Explanatory drawing which shows schematic structure of the cable termination | terminus connection part in this invention. Sectional drawing of the board connection member using the conventional connector. The top view which shows the attachment state to the apparatus outer wall of the conventional board connection member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... T-type connector 2 ... L-type connector 3 ... Insulation bus-bar 11, 21 ... Connection conductor 12a, 22a ... Horizontal mounting hole 12b, 22b ... Vertical mounting hole 12, 22 ... Insulation molding 14, 24 ... Semiconductive paint Coating layer 151a, 151b, 251a, 251b ... cone-shaped part 15a, 15b, 25a, 25b ... stress cone

Claims (7)

  A mounting hole for receiving an insulating bus or a cable is provided at the end portion, and rubber elasticity having a cone-shaped portion whose diameter increases from the opening end side toward the center portion on the outer periphery of the mounting hole on the opening end side is exhibited. An insulating molded body, and a cylindrical stress cone having a rubber-like elasticity having a cone-shaped portion corresponding to the cone-shaped portion at the tip, and the cone-shaped portion of the stress cone is formed of the insulating molded body. It is provided integrally with the insulating molded body in close contact with a cone-shaped portion, and a coating layer of a semiconductive paint is provided on the outer periphery of the insulating molded body across the outer periphery of the stress cone. connector.   A horizontal mounting hole is provided at both ends of the horizontal portion, and a vertical mounting hole is provided at the end of the vertical portion. From the opening end side to the outer periphery of each horizontal mounting hole and vertical mounting hole of the insulating molded body. An insulating molded body exhibiting rubber-like elasticity having a cone-shaped portion that expands toward the center, and a cylindrical stress cone exhibiting rubber-like elasticity having a cone-shaped portion corresponding to the cone-shaped portion at the tip. The conical part of the stress cone is provided integrally with the insulating molded body in close contact with the cone-shaped part of the insulating molded body, and the outer periphery of the stress cone is provided on the outer periphery of the insulating molded body. A T-shaped connector, characterized in that a coating layer of a semiconductive paint is provided across.   A horizontal mounting hole is provided at the end of the horizontal part, and a vertical mounting hole is provided at the end of the vertical part. An insulating molded body exhibiting rubber-like elasticity having a cone-shaped portion that expands toward the curved portion, and a cylindrical stress cone exhibiting rubber-like elasticity having a cone-shaped portion corresponding to the cone-shaped portion at the tip portion The conical part of the stress cone is provided integrally with the insulating molded body in close contact with the cone-shaped part of the insulating molded body, and the outer periphery of the stress cone is provided on the outer periphery of the insulating molded body. An L-shaped connector, characterized in that a coating layer of a semiconductive paint is provided across.   The T-shaped connector according to claim 2, the first and second L-shaped connectors according to claim 3 that are spaced apart from each other of the T-shaped connector, and one of the T-shaped connectors A first insulation bus mounted between a horizontal mounting hole and a horizontal mounting hole of the first L-shaped connector; a horizontal mounting hole of the other T-shaped connector and a horizontal of the second L-shaped connector; A board-to-board communication member comprising a second insulating bus bar mounted between the mounting holes.   The L-shaped connector according to claim 3, the first and second T-shaped connectors according to claim 2 that are spaced apart from each other on the right side of the L-shaped connector, and the horizontal position of the L-shaped connector A first insulating bus mounted between the mounting hole and one horizontal mounting hole of the first T-shaped connector; the other horizontal mounting hole of the first T-shaped connector; and the second T-shaped A second insulating busbar mounted between one horizontal mounting hole of the connector and an insulating plug mounted in the other horizontal mounting hole of the second T-type connector. Communication member.   A cable termination characterized in that a horizontal mounting hole of the L-shaped connector according to claim 3 is fitted into a bushing protruding from the outer wall of the device, and a power cable is mounted in the vertical mounting hole of the L-shaped connector. Connection part.   3. A vertical mounting hole of the T-shaped connector according to claim 2 is fitted into a bushing protruding from the outer wall of the device, and a power cable is inserted into one horizontal mounting hole of the T-shaped connector, and an insulating plug is connected to the other horizontal mounting hole. The cable terminal connection part characterized by each being mounted | worn.

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