JP4974937B2 - Low voltage line branching device - Google Patents

Description

  The present invention relates to a low-voltage line branching device for branching a low-voltage lead-in line from a low-pressure trunk line disposed in an underground space.

  Up to now, power was supplied to each building by drawing a low-voltage service line branched from the low-voltage main line installed on the power pole into the building, but the power pole, low-voltage main line, and low-voltage service line damaged the landscape, Underground in which the low-voltage main line is installed in the underground space and the low-voltage main line branched from the low-pressure main line is drawn into the building because the existence of the low-voltage main line and the low-voltage main line limits various construction works. Plan is being promoted.

  In connection with this, the low voltage | pressure branch apparatus for branching a low voltage | pressure lead-in line from a low voltage | pressure trunk line in underground space is provided. Such a low-voltage line branching device is designed in consideration of the possibility that groundwater, rainwater, or the like may flow into the underground space, and is configured so that water does not enter the interior even if the underground space is submerged. .

  Specifically, as shown in FIGS. 14 and 15, the low-voltage line branching apparatus includes a main-line connecting portion 10 ′ connected to a low-voltage main line disposed in the underground space, and a low-voltage lead-in line for drawing into a building. A plurality of connection ports 200 ′ configured to be insertable are formed, and a device main body 20 ′ in which a conductive member 220 ′ is housed is provided.

  The low-voltage line branching device 1 ′ has a sealing member 240 ′ that can be stabbed and elastically deformed with a low-voltage lead-in wire when the conductive member 220 ′ is installed (assembled) in the device main body 20 ′. An insertion assembly in which a cylindrical member is filled with a sealing member 240 ′ is press-fitted into the connection port 200 ′ from the inner space side or the connection port 200 ′ of the apparatus main body 20 ′ with the conductive member 220 ′ built therein. Each connection port 200 ′ is sealed by a sealing member 240 ′ by inserting and fixing the insertion assembly to the apparatus main body 20 ′ with an adhesive or the like.

  As a result, the low pressure line branching device 1 ′ prevents the inflow of moisture into the apparatus main body 20 ′ until the low pressure lead line is inserted into the connection port 200 ′, while the low pressure lead line is By inserting into the connection port 200 ′ while piercing the sealing member 240 ′, the low-voltage lead wire is electrically connected to the low-voltage main line connected to the main line connection portion 10 ′ via the conductive member 220 ′. Yes. Then, in a state where the low pressure lead wire is inserted into the connection port 200 ′, the sealing member 240 ′ is brought into close contact with the outer periphery (insulation coating or conductor) of the low pressure lead wire by the elastic action (restoring force) of the sealing member 240 ′. Even in the state where the lead-in wire is inserted, the inflow of moisture into the apparatus main body 20 'is prevented.

In this way, the low-voltage line branching device 1 ′ having the above-described configuration can prevent the inflow of moisture into the device main body 20 ′ in which the conductive member 220 ′ is housed, thereby preventing leakage (ground fault) due to the inflow of moisture. (See, for example, Patent Document 1).
JP-T-2006-511924

  By the way, for reasons such as demolishing a building or canceling a contract, it may be necessary to remove the low-voltage lead-in line from the building to the space between the ground. In such a case, the connection with the low-voltage line branching device 1 ′ can be released by pulling out the low-voltage lead-in wire from the connection port 200 ′. However, when the low-pressure lead-in wire is pulled out from the connection port 200 ′, a hole is formed in the sealing member 240 ′. Will open and the connection port 200 'cannot be returned to the sealed state.

  That is, in the conventional low-voltage line branching device 1 ′, since the sealing member 240 ′ is fixed directly or indirectly to the connection port 200 ′, the sealing is performed when the connected low-voltage lead-in wire is pulled out. There is a problem that the member 240 'must be left in a state where a hole is opened. Therefore, an operation of sealing the connection port 200 ′ with a waterproof tape or the like is required, and a removal operation of the waterproof tape or the like is required when the low-voltage lead-in wire is connected again.

  Therefore, in view of such a situation, the present invention enables the low-voltage lead-in wire to be reconnected even if the low-voltage lead-in wire connected to the connection port is pulled out, and the low-voltage line branch can be in a sealed state. It is an object to provide an apparatus.

  The low-voltage line branching device according to the present invention is formed with a main line connecting part connected to a low-voltage main line arranged in the underground space, and a plurality of connection ports configured to be able to insert a low-voltage lead-in line for drawing into a building. And each of the connection ports is sealed by a sealing member that can puncture and elastically deform the low-voltage lead wire, and inserts the low-voltage lead wire while piercing the sealing member. Thus, in the low-voltage line branching device configured to electrically connect the low-voltage lead-in line to the low-voltage main line connected to the main line connecting portion via the conductive member, the sealing member is fixed in a state where the connection port is sealed. The apparatus main body includes a sealing fixing member, and the apparatus main body is formed with a restricting portion that restricts the sealing member that closes the connection port from moving to the conductive member side. An insertion port for inserting the lead-in wire is formed, and a contact portion that can contact the outer peripheral edge portion of the sealing member is formed around the insertion port, and the contact portion is connected to the outer peripheral edge portion of the sealing member restricted by the restriction portion. While being configured to be fixed to the apparatus main body so as to be pressed toward the conductive member side, the fixing to the apparatus main body is provided so as to be releasable so as to release the pressing of the contact portion against the outer peripheral edge of the sealing member It is characterized by that. Here, “blocking the connection port” means that the connection port is blocked when the sealing member is press-fitted into the connection port or the opening of the connection port is covered.

  According to the low-voltage line branching device having the above-described configuration, the sealing member is fixed to the device main body, so that the movement of the sealing member closing the connection port to the conductive member side is restricted by the restricting portion, and then the sealing member. Since the outer peripheral edge portion is pressed toward the conductive member (device main body) by the contact portion, the sealing member that closes (seals) the connection port can be fixed while being maintained in that state. Therefore, the inside of the apparatus main body can be liquid-tight with the sealing member, and moisture can be reliably prevented from entering the apparatus main body.

  Since the sealing fixing member is formed with an abutting portion capable of abutting on the outer peripheral edge of the sealing member around the insertion port for inserting the low-voltage lead-in wire, the sealing member having the connection port sealed as described above is formed. The insertion port and the connection port are concentric or substantially concentric with the outer peripheral edge pressed by the contact portion. Thus, when the low-voltage lead-in wire is inserted from the insertion port, the low-voltage lead-in wire is inserted into the connection port while piercing the sealing member, and is finally electrically connected to the conductor member.

  On the other hand, when the connected low-voltage lead-in wire is pulled out, a hole in which the low-voltage lead-in wire is pulled out is formed in the sealing member. However, in the low-voltage wire branching device having the above configuration, the fixing of the sealing fixing member to the device main body is released. Since the pressing of the sealing member by the contact portion is released, the sealing member can be removed in this state. Then, the connection port can be returned to the sealed state by arranging the new sealing member as described above and fixing the sealing fixing member to the apparatus main body. And since the new sealing member can also puncture a low-voltage lead-in line and can be elastically deformed, even when a low-voltage lead-in line is added, it can be connected as it is as described above.

  As one aspect of the present invention, the apparatus main body includes a cylindrical portion extending outward, the connection port is configured by an inner hole of the cylindrical portion, and the restricting portion is a tip surface of the cylindrical portion or a cylindrical shape. The sealing fixing member includes a cylindrical main body portion that can be screwed onto the outer periphery of the cylindrical portion, and the abutting portion is located on an inner side from one end of the main body portion. The sealing member may be formed such that the outer peripheral end portion is sandwiched between the contact portion and the restricting portion.

  If it does in this way, a sealing fixing member can be easily attached or detached by the screwing of the sealing fixing member with respect to a cylindrical part, and the cancellation | release. And since the outer peripheral edge part is pinched | interposed into a contact part and a control part by screwing a sealing fixing member with respect to a cylindrical part, a connection port can be sealed reliably. Moreover, by releasing the screwing of the sealing fixing member to the cylindrical portion, the sealing fixing member and the sealing member can be removed, and the entire sealing member can be replaced.

  As another aspect of the present invention, the apparatus main body includes a cylindrical portion extending outward, the connection port is configured by an inner hole of the cylindrical portion, and the restricting portion is a tip surface of the cylindrical portion or a cylindrical shape. The sealing fixing member includes a cylindrical main body portion that can be screwed onto the outer periphery of the cylindrical portion, and the abutting portion is located on an inner side from one end of the main body portion. The sealing member is formed so as to surround the insertion port, and the sealing member includes a first seal portion having an outer peripheral end sandwiched between the contact portion and the restricting portion, and a connection port extending from the first seal portion. And a second seal portion that is press-fitted into the main body.

  If it does in this way, a sealing fixing member can be easily attached or detached by the screwing of the sealing fixing member with respect to a cylindrical part, and the cancellation | release. Then, by screwing the sealing fixing member to the cylindrical portion, the outer peripheral end portion of the first seal portion is sandwiched between the contact portion and the restricting portion, and the second seal portion is provided in the connection port. Since it is in the press-fitted state, the connection port can be more reliably sealed. Moreover, by releasing the screwing of the sealing fixing member to the cylindrical portion, the sealing fixing member and the sealing member can be removed, and the entire sealing member can be replaced.

  The contact portion is preferably formed in an annular shape so as to be able to contact the outer peripheral edge portion of the sealing member to define an insertion port. If it does in this way, a sealing member can be pressed to the apparatus main body side over a perimeter, and a sealing member can be reliably fixed in an appropriate state with respect to an apparatus main body (connection port).

  As described above, according to the low-voltage line branching device according to the present invention, the connection port is sealed after allowing the low-voltage service line to be reconnected even if the low-voltage service line connected to the connection port is removed. It is possible to achieve an excellent effect of being able to.

  Hereinafter, a low-voltage line branching apparatus (hereinafter simply referred to as a branching apparatus) according to an embodiment of the present invention will be described with reference to the accompanying drawings.

  As shown in FIG. 1, the branching device according to the present embodiment is a low pressure drawn into a building S from low-voltage trunk lines A1, A2, A3, A4 disposed in an underground space T such as a common groove or a common wire groove. The service lines B1, B2, B3, B4 are branched. The low-voltage trunk lines A1, A2, A3, and A4 include a ground line A1, a light line A2, a common line A3, and a power line A4. These four lines are arranged in the underground space T as a set. The cable diameters of the ground wire A1, the power line A2, the common line A3, and the power line A4 are set according to their roles. Generally, the ground line A1 and the power line A4 are 150 sq, the power line A2 and The shared line A3 is set to 250 sq.

  The low-voltage service lines B1, B2, B3, and B4 are branched from the low-voltage trunk lines A1, A2, A3, and A4, and are grounded from the underground space T into the building S as the ground line B1, the electric light line B2, the common line B3, and the power line B4 Led. Note that the number of low-voltage lead-in wires B1, B2, B3, and B4 that are drawn into the building S according to the contract between the customer and the power company is four or less (for example, two of the ground wire B1 and the common wire B3, or the ground wire) B1 and power line B2, two ground lines B1, power line B2, power line B4, ground line B1, common line B3, power line B2 or power line B4, etc.).

  As shown in FIGS. 2 to 4, the branching device 1 according to the present embodiment is connected to the main line connecting portion 10 connected to the low-voltage main lines A1, A2, A3, and A4 disposed in the underground space T, and the building S. A plurality of connection ports 200... Configured to be able to insert low-voltage lead wires B 1, B 2, B 3, B 4 for drawing are formed, and the apparatus main body 20 in which the conductive member 220 is housed and the connection ports 200. The sealing member 30 for sealing, and the sealing fixing member 40 which fixes the sealing member 30 to the apparatus main body 20 (1st cylindrical part 217 mentioned later) in the state which sealed the connection port 200 ... are provided.

  The main line connection unit 10 according to the present embodiment includes a terminal conductor of the low-voltage main lines A1, A2, A3, A4 or a branch conductor 50 branched from the low-voltage main lines A1, A2, A3, A4 (see FIG. 5A). It can be connected by inserting. That is, the main line connection unit 10 according to the present embodiment has the same configuration as the connection ports 200 that connect the low-voltage service lines B1, B2, B3, and B4, and is integrated with the apparatus main body 20 together with the plurality of connection ports 200. Is formed. Note that, as described above, the main line connection unit 10 according to the present embodiment has the same configuration as the connection ports 200... And will be referred to as a main line connection port in the following description.

  Here, the apparatus main body 20 will be described in detail together with the main line connection port 10. The apparatus main body 20 includes a casing 210 made of an insulating material as shown in FIGS. 3 (a) and 3 (b), and A conductive member 220 housed in the casing 210, a lead-in wire fixing means 230 for fixing the low-voltage lead wires B 1, B 2, B 3, B 4, which are housed in the casing 210 and inserted into the connection ports 200, to the conductive member 220, and the casing 210 And a main line fixing means 250 for fixing the low-voltage main lines A1, A2, A3, A4 or the branch conductors 50 inserted into the main line connection port 10 to the conductive member 220.

  The casing 210 according to the present embodiment is a resin molded product, and as shown in FIGS. 3 and 4, a casing main body 211 that is formed in a box shape in which substantially the entire surface is open and accommodates the conductive member 220, and a trunk line. A connection port 10 and a plurality of connection ports 200 are formed, and includes a closing member 215 that closes the opening of the casing body 211.

  The casing body 211 according to the present embodiment is formed in a horizontally long shape so that the opening is substantially rectangular, and a convex piece 211a for fixing to the wall surface that defines the underground space T or a separately provided frame defines the opening. Projecting outwardly from both ends of the wall (one of the pair of walls formed in the longitudinal direction). The convex piece 211a has a hole (not numbered) for inserting a bolt (see FIG. 4).

  As shown in FIG. 2, the casing body 211 is accessible from the outside to the lead-in wire fixing means 230 on the wall portion defining the opening (the other wall portion of the pair of longitudinally formed wall portions). A lead-in line operation unit 212 is formed, and a main line operation unit 260 that can access the main line fixing means 250 from the outside is formed. Since the main body connection port 10 and the plurality of connection ports 200... Are formed in the apparatus main body 20 according to the present embodiment as described above, a single unit corresponding to the main line connection port 10 and the plurality of connection ports 200. A main line operation unit 260 and a plurality of service lines operation units 212 are arranged side by side and in a row.

  Here, the service line operation unit 212, the service line operation unit 260, the service line fixing means 230, and the service line fixing means 250 will be described continuously, but these are related to the configuration of the conductive member 220 provided in the casing 210. Since the configuration is provided, the conductive member 220 will be described prior to these descriptions.

  The conductive member 220 is made of a conductive metal material. The conductive member 220 according to the present embodiment is formed in a block shape as shown in FIGS. 3 and 4, and the outer dimension is set so as to correspond to the inner dimension of the casing body 211. As a result, the conductive member 220 is fitted into the casing body 211 with its outer surface substantially in contact with the inner surface of the casing body 211. The conductive member 220 is formed such that one surface on the opening side of the casing body 211 is recessed from the opening end of the casing body 211 by a predetermined amount in a state where the conductive member 220 is fitted into the casing body 211. . That is, in a state where the closing member 215 is attached to the casing main body 211, a predetermined amount of gap (an opening sealing portion 241 of the second sealing member 240 described later) is provided between the inner surface of the closing member 215 (base portion 216 described later). The dimension is set so that a space for housing

  Further, as shown in FIG. 4, the conductive member 220 has conductor insertion holes 221... For inserting the conductors of the low-voltage lead wires B1, B2, B3, B4 on the one surface located on the opening side of the casing body 211 in the longitudinal direction. The main conductor side insertion holes 224 for inserting the conductors of the low voltage main lines A1, A2, A3, and A4 or the branch conductors 50 are formed side by side with the conductor insertion holes 221. ing. That is, the conductive member 220 has a plurality of conductor insertion holes 221 formed so as to be substantially concentric with the connection ports 200 in a state where the opening of the casing body 211 is closed by the closing member 215, and the trunk line. A trunk side conductor insertion hole 224 is formed so as to be substantially concentric with the connection port 10.

  As shown in FIG. 3A, the conductive member 220 according to the present embodiment is substantially concentric with a service line operation section 212 (cylindrical wall section 212a described later) of the casing body 211 in a state of being fitted into the casing body 211. Are formed so as to penetrate the outside and the conductor insertion holes 221. That is, a screw hole 222 extending in a direction substantially orthogonal to the conductor insertion holes 221... Is formed in a surface facing the wall portion of the casing main body 211 where the lead-in operation unit 212 is formed. Further, the conductive member 220 is provided with a recess 223 for accommodating a fixing member 232 (described later) of the lead-in wire fixing means 230 on the inner periphery of the conductor insertion holes 221. The recess 223 is set to a depth at which the fixing member 232 can be completely accommodated.

  As shown in FIG. 3B, the conductive member 220 according to the present embodiment is substantially concentric with the main line operation portion 212 (cylindrical wall portion 212a) of the casing main body 211 in a state of being fitted into the casing main body 211. A screw hole 222 is formed so as to penetrate the outside and the main line side conductor insertion hole 224. That is, a screw hole 222 extending in a direction substantially orthogonal to the main line side conductor insertion hole 224 is formed in a surface facing the wall portion of the casing main body 211 in which the main line operation unit 260 is formed. In addition, the conductive member 220 is provided in the inner periphery of the trunk-side conductor insertion hole 224 so that a recess 223 for accommodating a fixing member 232 (described later) of the trunk line fixing means 250 includes the opening of the screw hole 222. . The recess 223 is set to a depth at which the fixing member 232 can be completely accommodated.

  As shown in FIG. 3 (a), each of the service lines 212 has a cylindrical wall portion 212a projecting from the outer surface of the other wall portion forming the length of the casing 210 (casing body 211), and its cylinder. It is comprised with the cover part 212b which can open and close the opening of the shaped wall part 212a. The cylindrical wall portion 212 a is formed integrally with the casing main body 211 with the inside (inner hole) communicating with the casing main body 211. A part of the lid portion 212b is hinged to the outer surface of the cylindrical wall portion 212a, whereby the opening of the cylindrical wall portion 212a can be opened and closed. The lid 212b is provided with a packing 212c on the inner surface, and in a state where the opening of the cylindrical wall 212a is closed, the packing 212c is pressed against the upper end surface of the cylindrical wall 212a to make it liquid-tight. It is supposed to become a state. And in order to maintain the cover part 212b in this liquid-tight state, in this embodiment, the latching claw 212d is protrudingly provided in the position opposite to the butterfly position with respect to the cylindrical wall part 212a in the cover part 212b. At the same time, a locked portion 212e is projected on the outer surface of the cylindrical wall portion 212a, and the locking claw 212d is attached to the locked portion 212e in a state where the upper end opening of the cylindrical wall portion 212a is closed by the lid portion 212b. It is designed to be locked.

  The lead-in wire fixing means 230 according to the present embodiment includes a push screw 231 screwed into the screw hole 222 of the conductive member 220 and a fixing member 232 attached to the tip of the push screw 231. The push screw 231 has a rod-shaped male screw portion 231a continuously provided on a head operable by a tool, and a pin portion 231b having a smaller diameter than that of the male screw portion 231a is provided continuously at the tip of the male screw portion 231a. Has been. The push screw 231 has a head located in the lead-in operation portion 212 with the upper end opening of the cylindrical wall portion 212a closed by the lid portion 212b, and the tip of the pin portion 231b is a conductor insertion hole 221. The length is set so as to be in a retracted state (a state positioned in the recess 223). Thus, the push screw 231 is configured such that the distal end side thereof can be withdrawn / retracted from the conductor insertion holes 221.

  The fixing member 232 is formed by bending a metal piece into a U-shape, and a pair of pressing pieces 232a and 232a facing each other with a gap therebetween, and base ends of the pair of pressing pieces 232a and 232a are connected to each other. And a connected connecting piece 232b. The connecting piece 232b is formed with a hole (not numbered) for inserting the pin portion 231b. As a result, the connecting piece 232b can be inserted in a state where the tip end portion (pin portion 231b) of the push screw 231 is interposed between the pair of pressing pieces 232a and 232a. The distal end portion of the push screw 231 is prevented from being detached from the fixing member 232. In this embodiment, the distal ends of the pair of pressing pieces 232a and 232a and the distal end of the pin portion 231b are at substantially the same level. It is prevented from coming off (located on the same surface). As a result, the lead-in wire fixing means 230 according to this embodiment is configured such that the conductors of the low-voltage lead wires B1, B2, B3, and B4 are spaced apart in the axial direction by the three of the pair of pressing pieces 232a and 232a and the tip of the pressing screw 231. It can be pressed.

  Thus, the conductors of the low-voltage lead wires B1, B2, B3, B4 inserted into the connection ports 200 are inserted into the conductor insertion holes 221 of the conductive member 220 and pressed by the lead wire fixing means 230 in the direction orthogonal to the axis. As a result, the conductor is in close contact with the inner peripheral surfaces of the lead-in wire fixing means 230 and the conductor insertion holes 221... And is electrically connected to the main line connection portion 10 via the conductive member 220. The trunk line operating section 260 and the trunk line fixing means 250 are arranged corresponding to the trunk line connection port 10 (second cylindrical section 218), as is apparent from FIGS. 3 (a) and 3 (b). Otherwise, the configuration is the same as that of the service line operation section 212 and service line fixing means 230. Therefore, in FIG. 3B, each structure of the service line operation section 212 and service line fixing means 230 (tubular wall section 212a, cover section) 212b, push screw 231 and fixing member 232) will be assigned the same reference numerals, and the description will be omitted with reference to the service line operation section 212 and service line fixing means 230.

  The casing 210 according to the present embodiment is configured to close the opening by fitting a closing member 215 into the opening of the casing body 211. As shown in FIG. 4, the closing member 215 includes a plate-like base portion 216 fitted into the opening of the casing body 211 and a plurality of cylindrical portions (hereinafter referred to as convex portions) provided on one surface of the base portion 216. , And the first cylindrical portion 217..., And the second cylindrical portion (hereinafter referred to as the second cylindrical portion) protruding from one surface of the base portion 216. ) 218.

  The base portion 216 is formed corresponding to the shape of the opening (rectangular shape) of the casing body 211, and has a hole (numbering) penetrating therethrough corresponding to the arrangement of the first tubular portion 217. Not) is formed. Each of the plurality of first cylindrical portions 217 communicates with the hole of the base portion 216, and the connection port 200 is configured by the inner hole. That is, the apparatus main body 20 of the branching apparatus 1 according to the present embodiment is formed with a plurality of first cylindrical portions 217... Extending outward, and by the inner holes of the first cylindrical portions 217. A connection port 200 into which the low-voltage lead wires B1, B2, B3, B4 are inserted is configured.

  In addition, the second cylindrical portion 218 also communicates with the hole of the base portion 216, and the main connection port 10 is configured by the inner hole. That is, the device main body 20 of the branching device 1 according to the present embodiment is formed with a second tubular portion 218 extending outwardly in addition to the first tubular portions 217... The main line connection port 10 into which the low-voltage main lines A1, A2, A3, A4 are inserted is constituted by the inner hole of the shaped portion 218.

  The plurality of first cylindrical portions 217 are provided in a row at intervals in the longitudinal direction of the closing member 215, and the second cylindrical portion 218 is the first of the plurality of first cylindrical portions 217 in the row. The first cylindrical portion 217 at the end is provided so as to be in the same row with an interval. Accordingly, the plurality of connection ports 200 and the main line connection port 10 are formed in a line at intervals so as to correspond to the arrangement of the first cylindrical portion 217 and the second cylindrical portion 218.

  A male screw for screwing the sealing fixing member 40 is formed on the outer periphery of the distal end portion of each first cylindrical portion 217, and the sealing fixing member 40 is also formed on the outer periphery of the distal end portion of the second cylindrical portion 218. A male screw for screwing a sealing fixing member (hereinafter referred to as a mainline sealing fixing member) 41 having the same configuration is formed.

  The branching device 1 according to the present embodiment is provided with a second sealing member 240 (hereinafter referred to as a second sealing member) 240 that seals the connection port 200... From the inside of the casing 210 in addition to the sealing member 30. The second sealing member 240 is formed by molding a gel material that can be punctured and elastically deformed by the low pressure lead wires B1, B2, B3, and B4, and has a substantially rectangular shape corresponding to the shape of the opening of the casing body 211. And a plurality of connection port sealing portions 242 extending from one surface of the opening sealing portion 241 and press-fitted into the connection port 200, and one of the opening sealing portions 241. And a main line connection port sealing portion 243 that is press-fitted into the main line connection port 10.

  The opening sealing portion 241 is interposed between the conductive member 220 fitted in the casing body 211 and the closing member 215 (base portion 216), and the opening of the casing body 211 is closed by the closing member 215. In this state, the thickness is close to the conductive member 220 and the base portion 216 of the closing member 215.

  The connection port sealing part 242... And the main line connection port sealing part 243 are all integrally formed with the opening sealing part 241, and the plurality of connection port sealing parts 242. Corresponding to the arrangement, the main line connection port sealing portion 243 is provided corresponding to the arrangement of the main line connection port 10 of the blocking member 215. Each of the plurality of connection port sealing portions 242 is formed in a columnar shape with an outer diameter corresponding to the inner diameter of the connection port 200 and a length corresponding to the entire length of the connection port 200. Is pressed into the inner periphery of the first cylindrical portion 217 (connection port 200), and the front end coincides with the front end of the first cylindrical portion 217 to seal the connection port 200. ing.

  The main line connection port sealing portion 243 is formed in a columnar shape with an outer diameter corresponding to the inner diameter of the main line connection port 10 and a length corresponding to the entire length of the main line connection port 10. So that the outer periphery is in close contact with the inner periphery of the second tubular portion 218 (the main line connection port 10) and the front end coincides with the front end of the second tubular portion 218 so as to seal the main line connection port 10. It has become.

  The sealing member 30 is formed by molding a gel material (for example, a silicon-based gel material), and in the present embodiment, the sealing member 30 is formed in a disk shape corresponding to the shape of the first cylindrical portion 217. In the branch device 1 according to this embodiment, the distal end surface of the first tubular portion 217 is set as a restricting portion 217a that restricts the sealing member 30 from moving to the conductive member side in a state where the connection ports 200 are sealed. Has been. Accordingly, the sealing member 30 is set to an outer diameter that is equal to or larger than the inner diameter of the first cylindrical portion 217 (the diameter of the connection port 200) and is equal to or smaller than the outer diameter of the first cylindrical portion 217. An annular region on one surface side) hits the restricting portion 217a so that the connection port 200 can be closed.

  The sealing member 30 is set to a thickness that can maintain a sealed state with the outer periphery of the low-voltage lead-in wires B1, B2, B3, and B4 in a state where the low-voltage lead-in wires B1, B2, B3, and B4 are stuck. In other words, the sealing member 30 is set to a thickness that can provide a close range in which the sealing performance with the low-voltage lead wires B1, B2, B3, and B4 can be sufficiently obtained.

  The sealing fixing member 40 is formed with an insertion port 400 into which the low-voltage lead wires B1, B2, B3, and B4 are inserted, and a contact portion 401 that can contact the outer peripheral edge of the sealing member 30 is formed around the insertion port 400. ing. The sealing fixing member 40 is configured so that the contact portion 401 presses the outer peripheral edge of the sealing member 30 restricted by the restricting portion 217a of the first cylindrical portion 217 toward the device main body 20 (conductive member 220). 20 is configured to be able to be fixed to the apparatus 20, and is provided to be able to be fixed to the apparatus main body 20 so as to release the pressing of the contact portion 401 against the outer peripheral edge of the sealing member 30.

  The sealing fixing member 40 according to the present embodiment includes a cylindrical main body portion 402 that can be screwed onto the outer periphery (the male screw) of the first cylindrical portion 217, and the contact portion 401 includes the main body portion 402. The insertion port 400 is defined by being formed in an annular shape extending inward from one end thereof. Accordingly, the sealing fixing member 40 is disposed so that the outer peripheral end portion of the sealing member 30 faces the restricting portion 217a of the first cylindrical portion 217, and the main body portion 402 is screwed onto the male screw of the first cylindrical portion 217. As a result, the sealing member 30 is pushed toward the restricting portion 217a, and the contact portion 401 finally pushes the outer peripheral edge of the sealing member 30 restricted by the restricting portion 217a toward the apparatus main body 20 side. In this state, the apparatus main body 20 (the first cylindrical portion 217) is fixed.

  Further, by releasing the screwing of the main body portion 402 with respect to the first tubular portion 217, the pressing of the contact portion 401 with respect to the outer peripheral edge portion of the sealing member 30 is released, and finally the fixing to the apparatus main body 20 is released. (To be removed). As a result, the sealing member 30 can be attached and detached, so that the sealing member 30 can be replaced.

  As described above, the branch device 1 according to the present embodiment is provided with the second sealing member 240, and the tip of the connection port sealing portion 242 coincides with the tip of the first cylindrical portion 217 to seal the connection port 200. Since the sealing member 30 is regulated so that the front end surface of the first cylindrical portion 217 is the regulating portion 217a, the second sealing member is fixed with the sealing fixing member 40 as described above. 240 (the front end surface of the connection port sealing portion 242) is brought into close contact with and substantially integrated.

  As described above, the branch device 1 according to the present embodiment seals the main line connection port 10 because the main line connection port 10 is defined by the second cylindrical portion 218 in the same manner as the connection port 200. In addition to a sealing member (main line sealing member) 31, a main line sealing fixing member 41 for fixing the main line sealing member 31 sealing the main line connection port 10 is provided. The main line sealing member 31 is the same as the sealing member 30, and the main line sealing fixing member 41 is the same as the sealing fixing member 40.

  That is, the main line sealing member 31 is formed by molding a gel material, and in the present embodiment, is molded into a disk shape corresponding to the shape of the second cylindrical portion 218. In the branch device 1 according to the present embodiment, the leading end surface of the second tubular portion 218 is used as a restricting portion 218a that restricts the mainline sealing member 31 from moving to the conductive member side in a state where the mainline connection port 10 is sealed. Is set. Accordingly, the sealing member 31 for the main line is set to an outer diameter that is equal to or larger than the inner diameter of the second cylindrical portion 218 (the diameter of the main line connection port 10) and equal to or smaller than the outer diameter of the second cylindrical portion 218. The end portion (annular region on one surface side) hits the restricting portion 218a so that the main line connection port 10 can be closed.

  The main line sealing member 31 is set to a thickness capable of maintaining a sealed state with the outer periphery of the low-voltage main lines A1, A2, A3, A4 in a state where the low-voltage main lines A1, A2, A3, A4 are stuck. Yes. In other words, the sealing member 31 for the main line is set to a thickness capable of providing a close range in which the sealing performance with the low-voltage main lines A1, A2, A3, and A4 can be sufficiently obtained.

  The main-line sealing fixing member 41 is formed with an insertion port 410 into which the low-voltage main lines A1, A2, A3, and A4 are inserted, and a contact portion that can contact the outer peripheral edge of the main-line sealing member 31 around the insertion port 410 411 is formed. The main body sealing fixing member 41 is configured so that the contact portion 411 presses the outer peripheral edge portion of the main line sealing member 31 restricted by the restriction portion 218a of the second cylindrical portion 218 toward the device main body 20 side. It is comprised so that fixation to the apparatus main body 20 is releasable so that the press of the contact part 411 with respect to the outer-periphery edge part of the sealing member 31 for main lines may be cancelled | released.

  The main-line sealing fixing member 41 according to the present embodiment includes a cylindrical main body portion 412 that can be screwed onto the outer periphery (the male screw) of the second cylindrical portion 218, and the abutting portion 411 is a main body. The insertion port 410 is defined by extending inward from one end of the portion 412 and forming an annular shape. Thus, the mainline sealing fixing member 41 is disposed so that the outer peripheral end portion of the mainline sealing member 31 faces the restricting portion 218a of the second cylindrical portion 218, and the main screw is attached to the male screw of the second cylindrical portion 218. By screwing the portion 412, the main line sealing member 31 is pushed toward the restricting portion 218 a, and the contact portion 411 finally contacts the outer peripheral edge of the main line sealing member 31 restricted by the restricting portion 218 a. It is in the state pressed to the 20 side, and is fixed with respect to the apparatus main body 20 (2nd cylindrical part 218) in the state.

  Further, by releasing the screwing of the main body portion 412 with respect to the second cylindrical portion 218, the pressing of the contact portion 411 against the outer peripheral edge portion of the main line sealing member 31 is released, and finally the fixing to the apparatus main body 20 is performed. It is to be released (removed). As a result, the main line sealing member 31 can be attached and detached, so that the main line sealing member 31 can be replaced. As described above, the branch device 1 according to the present embodiment is provided with the second sealing member 240, and the tip of the connection port sealing portion 242 coincides with the tip of the second cylindrical portion 218 so that the main line connection port 10 is connected. Since it is configured to be sealed, the mainline sealing member 31 that is regulated with the front end surface of the second cylindrical portion 218 as the regulating portion 218a is fixed by the mainline sealing fixing member 41 as described above. Thus, the second sealing member 240 (the front end surface of the main line connection port sealing portion 243) is in close contact with each other and is substantially integrated.

  In the present embodiment, the main line connection port 10 and each connection port 200... Are set to have the same diameter. Therefore, the components related thereto are the same, but the main line connection port 10 is the connection port. When the inner diameter is different from 200, the mainline sealing member 31 and the mainline sealing fixing member 41 are of course similar to the sealing member 30 and the sealing fixing member 40 intended for the connection port 200. is there.

  The branching apparatus 1 according to the present embodiment has the above-described configuration. As shown in FIGS. 5A and 5B, the tip of the low-voltage trunk lines A1, A2, A3, A4 or the low-voltage trunk line A1, The branch conductor 50 branched from A2, A3, and A4 is inserted (connected) into the main line connection port 10 so that the low-voltage main lines A1, A2, A3, and A4 are directly or indirectly connected to the conductive member 220. Are electrically connected to each other. Specifically, referring to FIG. 3 (a) and FIG. 3 (b), as shown in FIG. 3 (b), the tips of the low-voltage trunk lines A1, A2, A3, A4 (with the insulation coating removed). When the branch conductor 50 is inserted into the insertion port 410 of the main-line sealing fixing member 41, the low-voltage main lines A1, A2, A3, A4 or the branch conductor 50 are connected to the main-line sealing member 31 and the second conductor 50. The second sealing member 240 is inserted into the main line connection port 10 while being pierced, and finally inserted into the main line side conductor insertion hole 224. Then, by fixing the low-voltage trunk lines A1, A2, A3, A4 or the branch conductor 50 inserted into the trunk-side conductor insertion hole 224 by the trunk fixing means 250, these are electrically connected to the conductive member 220. At the same time, it is in a fixed state.

  When connecting the low-voltage lead-in wires B1, B2, B3, and B4, as shown in FIG. 3A, from the insertion port 400 of any sealing fixing member 40 corresponding to the connection port 200 to be connected. Insert the low-voltage lead wires B1, B2, B3, B4. Then, the low-voltage lead wires B1, B2, B3, and B4 are inserted into the connection port 200 while piercing the sealing member 30 and the second sealing member 240, and finally inserted into the conductor insertion hole 221. Then, by fixing the conductors of the low-voltage lead wires B1, B2, B3, and B4 by the lead-wire fixing means 230, the low-voltage lead wires B1, B2, B3, and B4 are electrically connected to the conductive member 220 and are connected to the apparatus main body 20. It will be in a fixed state. As a result, the low-voltage lead wires B1, B2, B3, B4 are electrically connected to the low-voltage trunk lines A1, A2, A3, A4 connected to the trunk line connection port 10 via the conductive member 220.

  On the other hand, when removing the connected low-voltage service lines B1, B2, B3, B4, on the contrary to the procedure described above, after releasing the low-voltage service lines B1, B2, B3, B4 by the service line fixing means 230, When the low-voltage lead wires B1, B2, B3, B4 are pulled out from the connection port 200, the removal is completed.

  In this state, the sealing member 30 is replaced with a new sealing member 30 because the holes due to the insertion of the low-voltage lead wires B1, B2, B3, and B4 are opened. Here, the replacement of the sealing member 30 will be specifically described. First, the screwing of the sealing fixing member 40 to the first cylindrical portion 217 is released, and the sealing fixing member 40 is removed from the first cylindrical portion 217. As a result, the fixing of the sealing fixing member 40 to the apparatus main body 20 is released, the pressing of the sealing member 30 by the contact portion 401 is released, and the sealing member 30 becomes removable.

  Then, the new sealing member 30 is arranged so that the outer peripheral end portion thereof faces the restricting portion 217a, or the outer peripheral end portion of the sealing member 30 is arranged so as to face the contact portion 401 of the sealing fixing member 40. Thus, the main body portion 402 of the sealing fixing member 40 is screwed into the first cylindrical portion 217. Then, as a result of the sealing fixing member 40 moving in the axial direction of the first cylindrical portion 217, the outer peripheral end portion of the sealing member 30 is sandwiched between the restricting portion 217a and the contact portion 401. That is, the sealing member 30 has its outer peripheral edge abutted against the restricting portion 217a to restrict movement to the device main body 20 (the conductive member 220), and then the abutting portion 401 of the sealing fixing member 40 is on the device main body 20 side. It will be in the state pressed by.

  As a result, the outer peripheral end of the sealing member 30 comes into close contact with the annular restricting portion 217a. As a result, the connection port 200 defined by the first cylindrical portion 217 is sealed, into the apparatus main body 20. The inflow of water becomes blocked. And, since the new sealing member 30 is also made of a gel material that can be punctured and elastically deformed, the low pressure lead wires B1, B2, B3, and B4 are added. As described above, the low-voltage lead wires B1, B2, B3, and B4 can be inserted into the sealing member 30 and guided to the conductive member 220 through the connection port 200. In the present embodiment, since the second sealing member 240 is provided, as described above, the second sealing member 240 is also perforated by pulling out the low-voltage lead wires B1, B2, B3, B4. However, since the hole of the second sealing member 240 is also closed by exchanging with a new sealing member 30, there is no fear of inflow of moisture.

  Further, when connecting the low-voltage lead wires B1, B2, B3, B4, the second sealing member 240 is inserted into the hole of the second sealing member 240. The second sealing member 240 is an elastically deformable gel like the sealing member 30. Since it is made of a material, the hole of the second sealing member 240 has a smaller diameter than the low pressure lead wires B1, B2, B3, B4 due to its own elasticity (restoring force), and the inserted low pressure lead wires B1, B2, B3 , B4 is brought into a sealed state in close contact with the outer periphery.

  As described above, the branch device 1 according to the present embodiment includes the sealing fixing member 40 that fixes the sealing member 30 in a state where the connection port 200 is sealed, and the sealing member 30 that closes the connection port 200 on the apparatus main body 20. Is formed in the sealing member 40, and the sealing fixing member 40 is formed with an insertion port 400 for inserting the low-voltage lead wires B1, B2, B3, B4 and around the insertion port 400. A contact portion 401 that can be brought into contact with the outer peripheral edge portion of the sealing member 30 is formed, and the device with the contact portion 401 pressing the outer peripheral edge portion of the sealing member 30 restricted by the restricting portion 217a toward the apparatus main body 20 side. It is configured to be fixed to the main body 2020 and is mounted so as to release the pressing of the contact portion 401 against the outer peripheral edge of the sealing member 30. Since the fixing with respect to the main body 20 is configured to be releasable, the sealing member 30 can be replaced, and the low-voltage service lines B1, B2, B3 can be replaced even when the low-voltage service lines B1, B2, B3, and B4 to be branched are repeatedly attached and detached. The sealing state of the connection port 200 into which B4 is inserted can be reliably maintained, and moisture can be reliably prevented from flowing into the inside.

  In addition, the apparatus main body 20 includes a first cylindrical portion 217 extending outward, the connection port 200 is configured by an inner hole of the first cylindrical portion 217, and a restriction portion 217a is a first cylindrical portion. The sealing fixing member 40 includes a cylindrical main body portion 402 that can be screwed onto the outer periphery of the first cylindrical portion 217, and the contact portion 401 is formed from one end of the main body portion 402. The sealing member 30 is formed so as to extend inward and surround the insertion port 400, and the sealing member 30 is configured such that the outer peripheral end portion is sandwiched between the contact portion 401 and the restriction portion 217a. The ring-shaped restricting portion 217a and the contact portion 401 are in close contact with the outer peripheral end portion of the sealing member 30 only by being screwed into the sealing fixing member 40 with respect to the portion 217, and the connection port 200 is securely sealed. Suitable for member 30 It can be fixed to. Moreover, the sealing member 30 can be removed by releasing the screwing of the sealing fixing member 40 to the first cylindrical portion 217, and the sealing member 30 can be easily replaced.

  Furthermore, since the contact portion 401 is formed in an annular shape so as to be able to contact the outer peripheral edge of the sealing member 30 and defines the insertion port 400, the sealing member 30 is securely attached to the apparatus main body 20 (regulating portion 217 a) side. Can be pressed and fixed.

  In addition, this invention is not limited to the said embodiment, Of course, a various change can be added in the range which does not deviate from the summary of this invention.

  In the above embodiment, the front end surface of the first tubular portion 217 is used as the restricting portion 217a for restricting the sealing member 30 from moving toward the conductive member 220. However, the present invention is not limited to this. An annular surface on which the outer peripheral edge of the sealing member 30 can abut may be formed on the inner periphery of the tubular portion 217, and the annular surface may be used as the restricting portion 217a. In other words, the restriction portion 217 a may be provided in the connection port 200.

  In this case, for example, the tip end side of the inner hole (connection port 200) of the first cylindrical portion 217 is made large in diameter and the inner space side of the casing 210 is made small in diameter to form the inner hole in a stepped hole shape, An annular surface facing the distal end side of the connection port 200 at the step portion formed at the boundary between the large diameter portion and the small diameter portion may be the restriction portion 217a. Alternatively, a continuous ridge may be formed on the inner periphery of the connection port 200, and an annular surface of the ridge facing the distal end side of the connection port 200 may be used as the restriction portion 217a. And the restriction | limiting part 217a which regulates the movement of the sealing member 30 is not limited to what was comprised by the cyclic | annular area | region (annular surface) contact | abutted on the outer peripheral part (circumferential direction full length) of the sealing member 30, for example. The sealing member 30 may be formed so as to partially contact the outer peripheral edge of the sealing member 30 at intervals in the circumferential direction. Further, the restricting portion 217a is not limited to the opening peripheral edge of the connection port 200 or the connection port 200, and for example, the restriction member 217a is moved by the sealing member 30 coming into contact with any part in the casing 210. It may be provided so as to be regulated. Therefore, when the second sealing member 240 of the above embodiment is not provided, that is, when the conductive member 220 is installed so that one surface of the conductive member 220 is in close contact with the base portion 216 of the casing 210, one surface thereof is provided. The opening rim (one surface of the conductive member 220) of the conductor insertion hole 221 formed in the rim may be used as the restricting portion 217a.

  In the above embodiment, the sealing member 30 is formed in a disc shape so that the outer peripheral end portion is sandwiched between the contact portion 401 and the restricting portion 217a. However, the present invention is not limited to this. For example, FIG. ), A first seal portion 30a having an outer peripheral end sandwiched between the contact portion 401 and the restricting portion 217a, and a second seal portion 30b extending from the first seal portion 30a and press-fitted into the connection port 200. It may be constituted by. That is, the sealing member 30 may be formed in a stepped rod shape with a large-diameter first seal portion 30a and a small-diameter second seal portion 30b. In this case, since the sealing member 30 includes the second seal portion 30b that is press-fitted into the connection port 200, when the second sealing member 240 is provided in the casing 210 as in the above embodiment, the connection port sealing portion 242 is provided. Needless to say, the length of the connection port sealing portions 242 is set so that the second sealing portion 30b can be secured.

  As shown in FIG. 6B, when the restricting portion 217a is provided in the connection port 200, the sealing member 30 has an outer peripheral edge portion of one end surface abutting against the restricting portion 217a and the other surface being The sealing fixing member 40 is fixed to the apparatus main body 20 so as to be aligned with the opening end on the front end side of the connection port 200 or located slightly outside, and the contact portion 401 is in contact with and pressed against the other surface. You may be able to do it.

  In the above embodiment, the apparatus main body 20 is provided with the first cylindrical portion 217 extending outward, and the connection port 200 is configured by the inner hole of the first cylindrical portion 217. However, the present invention is not limited to this. For example, the thickness of the wall portion of the casing 210 of the apparatus main body 20 (the wall portion corresponding to the base portion 216 of the closing member 215 in the above embodiment) is increased, and the connection is made through a hole formed in the wall portion. The port 200 may be configured. Also in this case, the outer surface of the wall portion and the periphery (opening edge portion) of the connection port 200 may be used as the restriction portion 217a. As described above, the connection port 200 is formed like a stepped hole and the step portion is formed. An annular surface facing the distal end side of the connection port 200 may be used as the restricting portion 217a. Moreover, it is good also considering the annular surface which formed the continuous stripe on the inner periphery of the connection port 200, and turned to the front end side of the connection port 200 in this convex line as the control part 217a.

  In this case, since the first cylindrical portion 217 does not exist, for example, one of the engagement pieces of the wall portion of the casing 210 or the sealing fixing member 40 is provided so as to be engaged with the engagement piece with respect to the other. If the engaged parts to be combined are provided, the sealing fixing member 40 can be fixed to the apparatus main body 20. Even when the sealing fixing member 40 is fixed in this way, the insertion port 400 and the connection port 200 are configured to be concentric or substantially concentric, and the engagement claw and the cover are arranged to release the fixing to the apparatus main body 20. Of course, it is comprised so that engagement with an engaging part can be cancelled | released.

  In the said embodiment, although the 2nd sealing member 240 was provided, it is not limited to this, The 2nd sealing member 240 should just be provided as needed. However, when the casing 210 is the same as that in the above embodiment, as a measure for making the fitting portion between the casing main body 211 and the closing member 215 liquid-tight, for example, at least opening sealing of the second sealing member 240 is performed. It goes without saying that the portion 241 is provided or a packing is provided separately.

  In the above-described embodiment, the contact portion 401 of the sealing fixing member 40 is formed in an annular shape, but is not limited to this. For example, the contact portion 401 is intermittently formed at intervals around the insertion port 400. May be. That is, a plurality of protruding pieces extending toward the insertion port 400 may be provided around the insertion port 400 at intervals, and these may be used as the contact portion 401.

  In the above embodiment, the insertion port 400 of the sealing fixing member 40 is opened. However, the present invention is not limited to this. For example, as shown in FIGS. A plurality of flexible stopper pieces 420 extending from the distal end of the insertion hole 400 toward the center of the insertion port 400 may be provided radially around the center of the insertion port 400. In this way, for example, when the sealing member 30 is so shaped that its formability collapses as the temperature rises, the stopper pieces 420 can maintain the shape of the sealing member 30, and the low pressure lead-in wire B1. , B2, B3, and B4 are inserted into the insertion port 400, and the stopper pieces 420 are bent and tilted to insert the low-voltage lead wires B1, B2, B3, and B4 into the insertion port 400 and impinge on the sealing member 30. Is possible.

  In the above embodiment, the sealing member 30 can be fixed to the apparatus main body 20 (first cylindrical portion 217) by fixing the sealing fixing member 40 to the first cylindrical portion 217. However, the present invention is not limited to this. For example, as shown in FIGS. 8A and 8B, the inner surface of the main body portion 402 of the sealing fixing member 40 or the first cylindrical portion. A flat surface that forms a protrusion 405 on one of the outer surfaces of 217 and a groove 235 that fits the protrusion 405 on either one extends from the end surface in the direction of the center line of the connection port 200 or the insertion port 400 and bends on the tip side. It may be formed in a L-shape.

  In this way, the apparatus main body 20 (first cylindrical portion 217) and the sealing fixing member 40 are relatively moved so that the one protrusion 405 is moved along the other groove 235 to the tip end side thereof, and the protrusion When the 405 reaches the bent tip of the groove 235, the projection 405 is locked at the portion, and the sealing fixing member 40 can be fixed to the apparatus main body 20. Further, the apparatus main body 20 (first cylindrical portion 217) and the sealing fixing member 40 are relatively moved so that the projection 405 is moved to the base end side (end surface of the main body portion 402 or the first cylindrical portion 217) of the groove 235. The sealing fixing member 40 can be released from being fixed to the apparatus main body 20 by being moved to.

  In this case, the sealing member 30 is formed slightly longer than the distance between the contact portion 401 and the restricting portion 217 a of the sealing fixing member 40 fixed to the apparatus main body 20, and is slightly in a state where it is pressed by the contact portion 401. It is preferable to be elastically deformed. In this way, the restoring force generated by the elastic deformation of the sealing member 30 acts on the contact portion 401 and the restricting portion 217a, and the locking state of the protrusion 405 with respect to the tip portion of the groove 235 can be ensured. it can.

  Further, the sealing fixing member 40 is not limited to the one that can be completely removed from the first cylindrical portion 217 to release the fixing to the apparatus main body 20, and for example, FIG. 9 (a) and FIG. 9 (b). As shown in FIG. 4, a part of the sealing fixing member 40 is hinged to the first cylindrical portion 217 with a hinge 236 or the like, and either the sealing fixing member 40 or the first cylindrical portion 217 is located on the opposite side of the hinge position. The engaging claw 406 may be provided on one of the protrusions, and the engaged portion 237 on which the engaging claw 406 is engaged may be provided on the other. In this way, the insertion port 400 is concentric or substantially concentric with the connection port 200 in a state in which the engaging claw 406 is engaged with the engaged portion 237 (the contact member 401 is outside the sealing member 30). While the sealing fixing member 40 can be fixed to the apparatus main body 20 in a state in which the peripheral edge is pressed, the fixation to the apparatus main body 20 is released by releasing the engagement of the engagement claw 406 with respect to the engaged portion 237. The sealing member 30 can be removed by changing the posture of the sealing fixing member 40.

  In the above-described embodiment, one main line connection port (main line connection portion) 10 configured to be able to insert the low-voltage main lines A1, A2, A3, and A4 is provided in the apparatus main body 20. However, the present invention is not limited to this. For example, two main line connection ports 10 having the above-described configuration are provided, and one of the main line connection ports 10 is connected to the primary low-voltage main line A1, A2, A3, A4, and the other main line connection port 10 is connected to the secondary side. The low-voltage trunk lines A1, A2, A3, and A4 may be connected. If it does in this way, the branching apparatus 1 can be installed in the middle position of the low voltage | pressure trunk line A1, A2, A3, A4 arrange | positioned in the underground space T. FIG. In this case, the two main line connection ports 10 and 10 are preferably arranged so as to sandwich the plurality of connection ports 200.

  In the above embodiment, the main line connection portion 10 that is electrically connected to the low-voltage main lines A1, A2, A3, and A4 is configured in the same manner as the connection port 200, and is configured integrally with the apparatus main body 20, but is not limited thereto. For example, the main line connection unit 10 is electrically connected to the conductive member 220 in the apparatus main body 20 and electrically connected to the low-voltage main lines A1, A2, A3, and A4. It may be directly attachable in the state. That is, the low-voltage trunk lines A1, A2, A3, A4 are different from the low-voltage lead-in lines B1, B2, B3, B4, and are not frequently removed and removed by contract cancellation. Since it is not necessary to assume insertion / extraction like the connection port 200 for the low-voltage lead-in wires B1, B2, B3, B4, it is assumed that they are electrically connected to the conductive member 220 as shown in FIGS. As shown in FIG. 6, the low-pressure trunk lines A1, A2, A3, A4 may be sandwiched and connected, or the compression sleeve may be used to connect to the low-pressure trunk lines A1, A2, A3, A4.

  More specifically, for example, as shown in FIGS. 10 and 11, the main line connecting portion 10 includes a pair of holding bodies that sandwich the exposed conductor by removing the insulation coating of the low-voltage main lines A1, A2, A3, and A4. 10a and 10b, and a conductor 270 such as a cable or a metal rod is provided so as to communicate with the inside and outside of the casing 210 and connected to the conductive member 220. Either one of the sandwiching bodies 10a may be electrically connected. In this case, since the conductor 270 extends outward, the casing 210 is formed so as to cover the conductor 270 up to the vicinity of the main line connection portion 10. And what is necessary is just to protect the part which has the electroconductivity exposed in the state which connected the main line connection part 10 to the low voltage | pressure main line A1, A2, A3, A4 with an insulating cover or an insulating tape.

  The main line connecting portion 10 has a C-shaped cross section that can be connected to the conductors of the low-voltage main lines A1, A2, A3, A4 by caulking as shown in FIG. 12 instead of the pair of sandwiching bodies 10a, 10b described above. A sleeve-like shape or a clamp-like shape sandwiching the conductors of the low-voltage trunk lines A1, A2, A3, and A4 as shown in FIG. When the main line connection unit 10 is configured independently of the apparatus main body 20 as described above, the apparatus main body 20 includes a configuration related to the main line connection port 10 of the above-described embodiment (for example, the main line operation unit 260 and the main line connection unit 260). Needless to say, it is not necessary to provide the main-line fixing means 250, the second cylindrical portion 218, the main-line sealing fixing member 41, and the like.

  In the above-described embodiment, the fixing member 232 is attached to the distal end portion of the push screw 231 as the lead-in wire fixing means 230. However, the present invention is not limited to this. For example, the lead-in wire fixing means 230 may be configured by only the push screw 231. Good. In the above embodiment, the push screw 231 is screwed into the conductive member 220. However, for example, a through hole may be formed in the conductive member 220 and the push screw 231 may be screwed into the casing 210. Then, the push screw 231 may be screwed into the conductive member 220 and the casing 210.

  Furthermore, in the above-described embodiment, the low-voltage lead wires B1, B2, B3, B4 are fixed by the lead wire fixing means 230. However, the present invention is not limited to this. For example, the conductor insertion holes 221. The lead-in wire fixing means 230 is configured by protrusions or claws or the like protruding on the inner peripheral surface, and the low-voltage lead-in wires B1, B2, B3, and B4 inserted into the conductor insertion holes 221. May be prevented. Alternatively, the conductor insertion holes 221... May be formed to have substantially the same diameter as the conductors of the low-voltage lead wires B1, B2, B3, B4, and the conductors may be press-fitted into the conductor insertion holes 221. Accordingly, when it is not necessary to operate the service line fixing means 230 from the outside, it is not necessary to provide the service line operation unit 212.

It is explanatory drawing of the low voltage | pressure line to which the branch apparatus which concerns on embodiment of this invention is connected, Comprising: The state figure by which the low voltage | pressure trunk line as a low voltage | pressure line and the low voltage | pressure lead-in line were arrange | positioned between the earth hollows is shown. 1 shows an overall perspective view of a branch device according to an embodiment of the present invention. It is the longitudinal cross-sectional view of the branch apparatus which concerns on the same embodiment, Comprising: (a) shows the longitudinal cross-sectional view in the position corresponding to a connection port, (b) respond | corresponded to the trunk line connection part (trunk line connection port) The longitudinal cross-sectional view in a position is shown. The cross-sectional view of the branch device concerning the embodiment is shown. It is a use state figure of the branching device concerning the embodiment, (a) shows the perspective view of the state connected to the low voltage | pressure trunk line using the branch conductor, (b) connects the front-end | tip part of a low voltage | pressure trunk line The perspective view of the state which carried out is shown. It is explanatory drawing of the branch apparatus which concerns on other embodiment of this invention, Comprising: (a) shows the elements on larger scale of the branch apparatus which sealed the connection port with the stepped rod-shaped sealing member, (b) is straight. FIG. 2 shows a partially enlarged view of a branching device in which a connection port is sealed with a simple rod-shaped sealing member. It is explanatory drawing of the branch apparatus which concerns on another embodiment of this invention, Comprising: (a) shows the elements on larger scale including a connection port, a sealing member, and a sealing fixing member, (b) is the front of a sealing fixing member. The figure is shown. It is explanatory drawing of the branch apparatus which concerns on another embodiment of this invention, Comprising: (a) shows the elements on larger scale including a connection port, a sealing member, and a sealing fixing member, (b) is (a). II sectional drawing is shown, (c) shows the II-II sectional drawing of (a). It is the elements on larger scale containing the connection port of the branching device concerning another embodiment of the present invention, a sealing member, and a sealing fixing member, (a) shows the state where the connection port was sealed with the sealing member, b) shows a state where the sealing member is removed (a state where the fixing of the sealing member to the apparatus main body is released). The perspective view of the branching device concerning another embodiment of the present invention is shown. Fig. 11 shows a cross-sectional view of the branching device shown in Fig. 10. The perspective view of the branch apparatus which concerns on another embodiment of this invention (The branch apparatus which differs in the form of the branch apparatus of FIG. 10 and the trunk line connection part) is shown. The perspective view of the branch apparatus which concerns on another embodiment of this invention (The branch apparatus which differs in the form of the branch apparatus of FIG. 10 and the trunk line connection part) is shown. The perspective view of the conventional branch device is shown. The cross-sectional view of the conventional branch apparatus is shown.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Branch apparatus, 2 ... Apparatus main body, 10 ... Main line connection port (main line connection part), 10a, 10b ... Holding body, 20 ... Apparatus main body, 30 ... Sealing member, 30a ... First seal part, 30b ... Second seal , 31 ... Main line sealing member, 40 ... Sealing fixing member, 41 ... Main line sealing fixing member, 50 ... Branch conductor, 200 ... Connection port, 210 ... Casing, 211 ... Casing body, 211a ... Convex piece, 212 ... Service line operation section, 212a ... cylindrical section, 212b ... lid section, 212c ... packing, 212d ... locking claw, 212e ... locked section, 215 ... occluding member, 216 ... base section, 217 ... first cylindrical section (Cylindrical part), 217a ... tip end surface (regulating part), 218 ... second cylindrical part, 218a ... tip end face (regulating part), 220 ... conductive member, 221 ... conductor insertion hole, 222 ... screw hole, DESCRIPTION OF SYMBOLS 23 ... Concave part 224 ... Trunk side conductor insertion hole, 230 ... Lead wire fixing means, 231 ... Set screw, 231a ... Male screw part, 231b ... Pin part, 232 ... Fixing member, 232a, 232a ... Pressing piece, 232b ... Connection piece 235, groove, 236, hinge, 237, engaged portion, 240, second sealing member, 241, opening sealing portion, 242, connection port sealing portion, 243, trunk connection port sealing portion, 250, trunk line Fixing means, 260 ... main line operation section, 270 ... conductor, 400 ... insertion port, 401 ... contact portion, 402 ... main body portion, 405 ... projection, 406 ... engaging claw, 410 ... insertion port, 411 ... contact , 412 ... body part, 420 ... stopper piece, A1 ... earth line (low-pressure trunk line), A2 ... electric light line (low-pressure trunk line), A3 ... common line (low-pressure trunk line), A4 ... power line (low-pressure trunk line), B1, B2, B3, B ... Low-voltage lead-in wire, B1, B2, B3, B4 ... Low-voltage lead-in wire, B1 ... Earth wire (low-voltage main line), B2 ... Electric light line (low-pressure main line), B3 ... Common line (low-pressure main line), B4 ... Power line (low-pressure main line) , S ... building, T ... underground space

Claims (4)

  The main body of the apparatus in which a main line connecting portion connected to a low-voltage main line disposed in the underground space and a plurality of connection ports configured to allow insertion of a low-voltage lead-in line for drawing into a building are formed and a conductive member is internally provided And each connection port is sealed by a sealing member that can puncture and elastically deform a low-voltage lead wire, and the low-voltage lead wire is inserted through the conductive member by inserting the low-pressure lead wire into the sealing member. In the low-voltage line branching device configured to be electrically connected to the low-voltage main line connected to the main line connecting portion, the apparatus includes a sealing fixing member that fixes the sealing member in a state where the connection port is sealed, A restricting part is formed to restrict the sealing member that closes the connection port from moving to the conductive member side, and the sealing fixing member is formed with an insertion port for inserting a low-voltage lead-in wire And an abutting portion capable of abutting on the outer peripheral edge of the sealing member is formed around the insertion port, and the abutting portion presses the outer peripheral edge of the sealing member restricted by the restricting portion toward the conductive member. The low-voltage line branching device is configured to be fixable to the main body and is releasably fixed to the apparatus main body so as to release the pressing of the abutting portion against the outer peripheral edge of the sealing member. .   The apparatus main body includes a cylindrical portion extending outward, the connection port is configured by an inner hole of the cylindrical portion, and the restriction portion is formed on the distal end surface of the cylindrical portion or the inner periphery of the cylindrical portion. The sealing fixing member includes a cylindrical main body portion that can be screwed onto an outer periphery of the cylindrical portion, and the abutting portion extends inward from one end of the main body portion to provide an insertion port. The low-voltage line branching device according to claim 1, wherein the sealing member is formed so as to surround the outer peripheral end portion between the contact portion and the regulating portion.   The apparatus main body includes a cylindrical portion extending outward, the connection port is configured by an inner hole of the cylindrical portion, and the restriction portion is formed on the distal end surface of the cylindrical portion or the inner periphery of the cylindrical portion. The sealing fixing member includes a cylindrical main body portion that can be screwed onto an outer periphery of the cylindrical portion, and the abutting portion extends inward from one end of the main body portion to provide an insertion port. The sealing member includes a first seal portion having an outer peripheral end sandwiched between the contact portion and the restriction portion, and a second seal extending from the first seal portion and press-fitted into the connection port. The low-voltage line branching device according to claim 1, comprising:   The low-pressure line branching device according to any one of claims 1 to 3, wherein the contact portion is formed in an annular shape so as to be able to contact the outer peripheral edge portion of the sealing member to define an insertion port.

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