JP4481119B2 - Conductor device - Google Patents

Description

  The present invention relates to a conductor device provided in a single-phase three-wire distribution board used for homes and the like, and more particularly to a conductor device that improves workability when an insulating block is assembled to an installation block.

  A residential distribution board in which a main breaker and a plurality of branch breakers are connected by a conductor device and these are housed in a housing is known (for example, see Patent Document 1). The conductor device is shown in FIG. 11, for example. The conductor device 100 includes an installation block 101 fixed to a distribution board casing (not shown), a first voltage phase conductor 111, a neutral phase conductor 112, and a second voltage phase conductor 113. And an insulating block 102 that is fitted and held on the installation block 101 in a state of being temporarily held in an insulated state.

  A plurality of insulating spaces 103 are defined in the insulating block 102, and connecting portions 111 d, 112 d, 113 d inserted into the mounting portions 104 disposed between the insulating spaces 103 include bolts, nuts, and cylindrical conductors. The terminals 111a, 112a, and 113a of the conductors 111, 112, and 113 are connected to the trunk via connection conductors (not shown) while connected to the connection terminals (eight) of a plurality of branch breakers (not shown) by a child or the like. It is connected to a connection terminal of a breaker (not shown). In addition, the attachment part 104 at the left end in the figure is disposed between the insulating space 103 and the end plate 105.

  The configuration and assembly procedure of the conductor device 100 as described above will be described. FIG. 12 is an assembly correspondence diagram of the first voltage phase conductor 111, the neutral phase conductor 112, and the second voltage phase conductor 113. As shown in the drawing, a terminal portion 112a having two bolt holes is bent at one end of a base portion 112b of a neutral phase conductor 112, and a plurality of raised portions 112c are spaced along a predetermined distance along the base portion 112b. A U-shaped connecting portion 112d is bent in the lateral direction at the upper end of the raised portion 112c.

  A terminal portion 111a having one bolt hole is bent at one end of the base portion 111b of the first voltage phase conductor 111, and a plurality of insertion portions 111c and U-shaped connecting portions are formed along the base portion 111b. 111d is formed. The insertion portion 111c includes a rising portion that rises along the base portion 112b and an insertion portion that is bent and extended in the lateral direction from the rising portion. The connecting portion 111d includes a rising portion that is bent and raised in a stepped manner along the base portion 112b, and a U-shaped connecting portion that is bent laterally from the rising portion.

  A terminal portion 113a having one bolt hole is bent at one end of the base portion 113b of the second voltage phase conductor 113, and a plurality of U-shaped connecting portions 113d and insertion portions are formed along the base portion 113b. 113c is formed. The connection portion 113d includes a rising portion that rises along the base portion 112b, and a connection portion that is bent laterally from the rising portion. The insertion portion 113c includes a rising portion that rises along the base portion 113b and an insertion portion that is bent and extended in the lateral direction from the rising portion.

  The connecting portion 111d of the first voltage phase conductor 111 and the connecting portion 113d of the second voltage phase conductor 113 are respectively within the insulating space 103 of the insulating block 102 shown in FIGS. The insulating block 102 is temporarily held by the insulating block 102 so as to come into contact with the connecting portions 112d of the neutral phase conductor 112 alternately in an opposed state, and the insulating block 102 is fitted to the installation block 101 ( (Refer FIG. 11 (a) (b)).

  13A and 13B show an insulating block 102, and a plurality of insulating spaces 103,... Are defined in the insulating block 102, and conductors 111, 112, 113 are interposed between the insulating spaces 103. A mounting portion 104 for inserting the connecting portions 111d, 112d, and 113d is provided. On one side of the insulating block 102, as shown in FIG. 13A, a gap portion 106 is formed for inserting the rising portion 112c and the connecting portion 112d of the neutral phase conductor 112 from the lateral direction. The gap portion 106 communicates with the attachment portion 104.

  On the other hand, on the other side of the insulating block 102, as shown in FIG. 13B, the gap portion 107 for inserting the insertion portion 111c of the first voltage phase conductor 111 from the lateral direction and the connection portion 111d in the lateral direction are provided. Are formed, and a gap portion 109 for inserting the insertion portion 113c of the second voltage phase conductor 113 and a gap portion 110 for inserting the connection portion 113d from the lateral direction are formed. The gap portions 107 and 108 and the gap portions 109 and 110 are alternately formed, and the gap portions 108 and 110 communicate with the attachment portion 104.

  The procedure for assembling the conductors 111, 112, and 113 to the insulating block 102 having such a configuration will be described. First, as shown in FIG. After inserting the connecting portion 112d of the sex phase conductor 112, the insertion portion 111c and the connecting portion 111d of the first voltage phase conductor 111 are inserted into the gap portion 107 and the gap portion 108 formed on the other side of the insulating block 102. insert. Next, as shown in FIG. 14B, the insertion portion 113 c and the connection portion 113 d of the second voltage phase conductor 113 are inserted into the gap portion 109 and the gap portion 110 formed on the other side of the insulating block 102. .

  In this state, the three conductors 111, 112, and 113 are temporarily held by the insulating block 102, and the bottom of the insulating block 102 is fitted to the installation block 101 as shown in FIGS. Then, the assembly of the conductor device 100 is completed, and the conductor device 100 is arranged at the mounting position of the housing, and the connection portions 111d, 112d, 113d of the conductors 111, 112, 113 are connected to bolts, nuts, and By connecting to the connection terminal of each branch breaker with a cylindrical conductor and the like, and connecting the terminal portions 111a, 112a, 113a to the connection terminal of the main breaker via the connection conductor, the assembly of the conductor device 100 to the housing is completed. To do.

Japanese Patent Laid-Open No. 2004-166385

  However, in the conventional conductor device shown in FIGS. 11 to 14, the state in which the conductors 111, 112, and 113 are temporarily held by the insulating block 102 is extremely unstable. During the assembly, the neutral phase conductor 112 and the second voltage phase conductor 113 may fall off the insulating block 102, and the assembly workability is not good.

  That is, the connecting portion 112d of the neutral phase conductor 112 is inserted into the gap 106 formed on one side of the insulating block 102, and the insertion portion 113c and the connecting portion 113d of the second voltage phase conductor 113 are connected to the insulating block 102. Since the gaps 109 and 110 formed on the other side are only inserted into the gaps 109 and no measures are taken to prevent them from coming off, if the insulating block 102 is inadvertently shaken or tilted, the conductors 112 and 113 are connected. The portions 112d and 113d may fall off the gap portions 106 and 110.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a conductor device in which a conductor can be temporarily held on an insulating block stably.

The conductor device of the present invention is in the conductor device 100 provided in the distribution board 160 for connecting the main breaker 140 and the plurality of branch breakers 150,
The installation block 101 fixed to the casing 161 of the distribution board 160, the first voltage phase conductor 111, the neutral phase conductor 112, and the second voltage phase conductor 113 are temporarily held in an insulated state. An insulating block 102 fitted and held in the installation block 101 in a state,
A plurality of insulating spaces 103 are defined in the insulating block 102, and attachment portions 104 for inserting the connecting portions 111 d, 112 d, 113 d of the conductors 111, 112, 113 are arranged between the insulating spaces 103. A gap portion 106 is formed on one side of the insulating block 102 for inserting the raised portion 112c of the neutral phase conductor 112 and the connecting portion 112d, and on the other side of the insulating block 102. Is formed with a gap portion 107 for inserting the insertion portion 111c of the first voltage phase conductor 111 and a gap portion 108 for inserting the connection portion 111d, and outside the first voltage phase conductor 111. A gap portion 109 for inserting the insertion portion 113c of the second voltage phase conductor 113 to be disposed and a gap portion 110 for inserting the connection portion 113d are formed,
Further, on one side of the insulating block 102, there is provided first locking means 120 for locking the rising portion 112c of the neutral phase conductor 112 inserted into the gap portion 106 in a retaining state, and On the other side of the insulating block 102, there is provided a second locking means 130 for locking the insertion portion 113c of the second conductor 113 inserted in the gap portion 109 in a retaining state. To do.

  According to such a configuration, the upright portion 112c and the connecting portion 112d of the neutral phase conductor 112 are inserted into the gap portion 106 formed on one side of the insulating block 102, and the neutral phase conductor 112 is raised. After the upper portion 112c is locked to the first locking means 120 in a retaining state, the first voltage phase conductor 111 is inserted into the gap 107 and the gap 108 formed on the other side of the insulating block 12. Next, the insertion portion 113c and the connection portion 113d of the second voltage phase conductor 113 are inserted into the gap portion 109 and the gap portion 110 formed on the other side of the insulating block 102. Thus, the insertion portion 113c can be locked in the retaining state by the second locking means 130. In this state, the three conductors 111, 112, and 113 are temporarily and stably held on the insulating block 102, and the workability when the insulating block 102 is assembled to the installation block 101 is significantly improved.

(2) The first locking means 120 is formed on the wall surface 106a that defines the gap 106 in order to lock the locking piece 112e protruding from the upright portion 112c of the neutral phase conductor 112. The locking protrusion 106b is formed, and the second locking means 130 has a wall surface 109a that defines the gap 109 in order to lock the insertion portion 113c of the second voltage phase conductor 113. It may be a locking projection 109b. If it does in this way, both locking means 120 and 130 can be easily formed as a simple composition.

  The conductor device of the present invention is provided with a first locking means for locking the neutral phase conductor in a retaining state on one side of the insulating block, and on the other side outside the first voltage phase conductor. Since the second locking means for locking the arranged second voltage phase conductor in the retaining state is provided, the neutral phase conductor and the second voltage phase conductor inserted in the insulating block, and The first voltage phase conductor can be prevented from falling off from both sides of the insulating block. Therefore, the workability of assembling the insulating block to the installation block is significantly improved.

  Hereinafter, a conductor device according to the best embodiment of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected about the member same or equivalent to the member demonstrated with reference to FIG. 11 thru | or FIG. 14 by background art, and the description is abbreviate | omitted.

  1 and 2 are perspective views of an insulating block formed by molding a resin material, and FIG. 3 is an assembly of a first voltage phase conductor 111, a neutral phase conductor 112, and a second voltage phase conductor 113. The correspondence diagram is shown. First, as shown in FIG. 1, on one side of the insulating block 102, first locking means 120 that locks the rising portion 112 c of the neutral phase conductor 112 inserted into the gap portion 106 in a retaining state. As shown in FIG. 3, in order to lock the locking piece 112e protruding from one side of the upright portion 112c of the neutral phase conductor 112, it is locked to one wall surface 106a that defines the gap 106. A portion 106b is formed.

  For example, as shown in the drawing, the engaging portion 106b can be formed in a shape in which the periphery of the recess into which the engaging piece 112e of the conductor 112 is inserted is raised in a U-shape and is edged. As long as the locking piece 112e (or the upright portion 112c) can be held in a locked state so that the neutral phase conductor 112 does not fall off, the configuration and shape are not limited. In addition, a plurality of pairs (for example, five pairs) of locking protrusions 102e for detachably attaching the electric shock prevention cover 142 (see FIG. 7) are formed on both upper edges of the insulating block 102.

  As shown in FIG. 2, on the other side of the insulating block 102, second locking means 130 that locks the insertion portion 113 c of the second conductor 113 inserted into the gap portion 109 in a retaining state. In order to lock the insertion portion 113 c of the second voltage phase conductor 113, a locking portion 109 b is formed on one wall surface 109 a that defines the gap portion 109. In addition, a locking portion 107a for locking the insertion portion 111c is formed on one wall surface that defines the gap portion 107 into which the insertion portion 111c of the first conductor 111 is inserted.

  As shown in FIG. 3, the insertion portion 113c of the second voltage phase conductor 113 includes a rising portion 113e that rises along the base portion 113b, and an insertion portion 113f that is bent and extended laterally from the rising portion 113e. It consists of. Therefore, for example, as shown in FIG. 2, the locking portion 109b is formed in an inverted L shape (key shape) that can lock the back side of the rising portion 113e and the insertion portion 113f. However, the present invention is not limited to this, and any configuration or shape can be used as long as at least the rising portion 113e can be held in a locked state so that the second conductor 113 does not fall off.

  With the above configuration, first, as shown in FIG. 4, the upright portion 112 c and the connection portion 112 d of the neutral phase conductor 112 are inserted into the gap portion 106 formed on one side of the insulating block 12, By slightly pushing the conductor 112 to the right in the figure, the locking piece 112e protruding from the upright portion 112c of the neutral phase conductor 112 can be locked to the locking portion 106b formed on the wall surface 106a. . In this state, the neutral phase conductor 112 is temporarily held on the insulating block 102 so as not to drop off.

  Next, the insertion portion 111c and the connection portion 111d of the first voltage phase conductor 111 are inserted into the gap portion 107 and the gap portion 108 formed on the other side of the insulating block 12, and the insertion portion 111c is engaged with the locking portion. After being locked to 107a, as shown in FIG. 5, the insertion portion 113c and the connection portion 113d of the second voltage phase conductor 113 are inserted into the gap portion 109 and the gap portion 110 formed on the other side of the insulating block 102. Is inserted and the conductor 113 is pushed a little in the left direction in the figure, whereby the upright portion 113e and the back side of the insertion portion 113f can be locked to the locking portion 109b. In this state, the second conductor 113 is temporarily held stably on the insulating block 102 so as not to drop off.

  As described above, the insulating block 102 in which the three conductors 111, 112, and 113 are temporarily and stably held is fitted into the installation block 101 with good workability as shown in FIGS. 6 (a) and 6 (b). be able to. As shown in FIG. 7, the temporarily assembled conductor device 100 is arranged at a predetermined position of the main body 161 </ b> A of the casing 161 of the distribution board 160, and is connected to each attachment portion 104. The parts 111d, 112d, 113d are connected to the connection terminal 150d of the branch breaker 150 by bolts, nuts, cylindrical conductors, etc., and the terminal parts 111a, 112a, 113a and the connection terminals 140a, 140b, 140c of the main breaker 140 Are connected to the main body 161A of the casing 161 by connecting the connection conductors 140A, 140B, and 140C by bolt fastening or the like, and further, an overvoltage detection lead wire 140e extending from the main breaker 140 is provided. If connected to the terminal portion 112a of the neutral phase conductor 112, the conductor device 100 can be connected to the main body 161A of the casing 161. Assembly is completed. In FIG. 7, 140SW indicates a switch (main switch) of the main breaker 140, and 150SW indicates a switch of the branch breaker 150.

  Next, as shown in FIG. 8, an electric shock prevention is achieved by engaging and locking an engagement hole 142e formed in an electric shock prevention cover 142 made of an insulating material with an engagement protrusion 102e of the insulation block 102. The cover 142 can be detachably attached. In the illustrated example, the electric shock prevention cover 142 is formed to cover the entire conductor device 100, the connection terminals 140a, 140b, and 140c of the main breaker 140, and the connection conductors 140A, 140B, and 140C, thereby completely preventing electric shock. Is planned. Reference numeral 142f denotes a voltage measurement hole.

  A pair of locking portions 161c for attaching the cover 161B shown in FIGS. 9 and 10 is provided at the upper end of the main body 161A of the housing 161. The locking portions 161c are formed on the horizontal sides. A portion cx and a tapered side portion ct whose outer side is chamfered in a tapered shape are provided. In addition, a pair of claw receivers 161d for latching the cover 161B in a closed state is provided at the lower end of the main body 161A. A bolt hole 161g for fixing to a wall surface or the like is formed in the upper portion of the main body 161A.

  On the other hand, a locked portion 161d that is locked in a positioning state by a pair of locking members 161c of the main body 161A is provided at the upper rear side of the cover 161B, and a pair of claws of the main body 161A is provided at the lower lower end of the cover 161B. A slidable latch claw 161e that latches on the receiver 161d is provided and is urged inward by a spring (not shown), and an operation portion exposed on the front surface of the cover 161B is provided on the back side of the latch claw 161e. 161f is provided (see FIG. 10). The above-described locked portion 161d is formed in a substantially inverted L shape having a horizontal side portion dx formed in the horizontal direction and a vertical side portion dy formed in the vertical direction. In addition, openings 161h and 161i for exposing the switch 140SW of the main breaker 140 and the switch 150SW of the branch breaker 150 to the outside are formed in a substantially central portion of the cover 161B.

  In order to attach such a cover 161B to the main body 161A, a pair of locked portions 161d formed at the upper end of the back side of the cover 161B is engaged with a locking member 161c formed at the upper end of the main body 161A. When the cover 161B is stopped, the cover 161B is positioned on the main body 161A. When the cover 161B is pushed in and closed in this state, the latch claw 161e at the lower bottom of the cover 161B is latched and locked by the claw receiver 161d provided on the main body 161A. It becomes a state. During the closing operation, the side portion dx of the locked portion 161d of the cover 161B is locked to the side portion cx of the locking member 161c of the main body 161A, and before the cover 161B is closed, Since the vertical side portion dy of the stop portion 161d is guided in sliding contact with the tapered side portion ct of the locking member 161c, the cover 161B is accurately positioned with respect to the main body 161A and is reliably latched. In order to release this latch, both the operation parts 161f may be moved outward.

  Note that the present invention is not limited to the embodiments, and can be freely improved and modified as necessary without departing from the gist of the invention. The protruding portion 112c may be provided on the other side of the upright portion 112c of the sex phase conductor 112. In this case, the locking portion 106b may be formed on the other wall surface that defines the gap portion 106. The locking portion 109 b for locking the insertion portion 113 c of the second voltage phase conductor 113 may be formed on the other wall surface that defines the gap portion 109.

It is the perspective view seen from the one side of the insulation block of the conductor apparatus which concerns on embodiment of this invention. It is the perspective view seen from the other side of the insulation block. It is an assembly | attachment corresponding figure of the same conductor. It is a perspective view of the state which inserted the conductor of the neutral phase and the conductor of the 1st voltage phase in the insulation block. It is a perspective view of the state which inserted the conductor of the neutral phase, the conductor of the 1st voltage phase, and the conductor of the 2nd voltage phase in the insulation block. (A) is the perspective view of the state which made the installation block fit the installation block, (b) is the top view. It is a top view which shows the structure inside the distribution board. It is a top view inside the distribution board of the state which attached the same electric shock prevention cover. It is the perspective view seen from the back side of the cover of the distribution board. It is a front view of the distribution board. (A) is a perspective view of the conventional conductor apparatus, (b) is the top view. It is an assembly | attachment corresponding figure of the same conductor. (A) is the perspective view seen from one side of the insulation block, (b) is the perspective view seen from the other side. (A) is a perspective view of a state in which a neutral phase conductor and a first voltage phase conductor are inserted into the same insulating block, and (b) is a neutral phase conductor and a first voltage phase conductor in the same insulating block. It is a perspective view of the state which inserted the conductor of the 2nd voltage phase.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 ... Conductor apparatus, 101 ... Installation block, 102 ... Insulation block, 103 ... Insulation space, 104 ... Mounting part, 106, 107, 108, 109, 110 ... Gap part, 106a ... Wall surface, 106b ... Locking protrusion, 109a ... Wall surface, 109b ... Locking projection, 111 ... First voltage phase conductor, 111c ... Insertion section, 112 ... Neutral phase conductor, 112c ... Upright portion, 112d ... Connection portion, 112e ... Locking piece, 113 ... Second voltage phase conductor, 113c ... insertion part, 111d, 112d, 113d ... connection part, 120 ... first locking means, 130 ... second locking means, 140 ... main circuit breaker, 150 ... branch breaker 160 ... distribution board, 161 ... casing

Claims (2)

A conductor device (100) provided in a distribution board (160) for connecting a main breaker (140) and a plurality of branch breakers (150),
An installation block (101) fixed to a casing (161) of the distribution board (160), a first voltage phase conductor (111), a neutral phase conductor (112), and a second voltage phase An insulating block (102) fitted and held in the installation block (101) in a state where the conductor (113) is temporarily held in an insulated state,
A plurality of insulating spaces (103) are defined in the insulating block (102), and the connecting portions (111d, 112d, 112) of the conductors (111, 112, 113) are defined between the insulating spaces (103). 113d) is inserted, and the upright portion (112c) of the neutral phase conductor (112) and the connecting portion (112d) are inserted on one side of the insulating block (102). On the other hand, a gap portion (107) for inserting the insertion portion (111c) of the first voltage phase conductor (111) is formed on the other side of the insulating block (102). ) And a gap portion (108) into which the connecting portion (111d) is inserted, and the second voltage phase conductor (113) disposed outside the first voltage phase conductor (111). ) Insertion part (113c) Void portion to be inserted (109), the gap portion for inserting the connecting portion (113d) (110) is formed,
Further, on one side of the insulating block (102), a first portion (112c) of the neutral phase conductor (112) inserted into the gap (106) is locked in a retaining state. The locking means (120) is provided, and the insertion portion (113c) of the second conductor (113) inserted in the gap portion (109) is prevented from coming off on the other side of the insulating block (102). A conductor device, characterized in that a second locking means (130) is provided for locking to the wire.   The first locking means (120) includes the gap portion (106) for locking a locking piece (112e) projecting from an upright portion (112c) of the neutral phase conductor (112). The second locking means (130) is an insertion portion (113c) of the second voltage phase conductor (113). 2. The conductor device according to claim 1, wherein the conductor device is a locking protrusion (109 b) formed on a wall surface (109 a) that defines the gap portion (109).

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