JP5080800B2 - Distribution board - Google Patents

Description

  The present invention relates to a distribution board that houses a circuit breaker.

Conventionally, a distribution board that houses a plug-in circuit breaker to be inserted into a conductive bar has been provided, and is disclosed in, for example, Patent Document 1. The distribution board includes a plurality of circuit breakers 101 and a substrate 102 having a plurality of attachment portions to which the plurality of conductive bars 100 and the circuit breakers 101 are detachably attached. It is installed on the substrate 102 so as to be aligned along the longitudinal direction of the conductive bar 100 on both sides in the width direction of the bar 100. As shown in FIG. 7A, the circuit breaker 101 has a plurality of insertion grooves 101a into which the conductive bar 100 is inserted on one side surface in the longitudinal direction of the container, and a conductive material is provided inside each insertion groove 101a. A receiving blade 101b connected to the bar 100 is provided. As shown in FIG. 7A, the mounting portion includes a fixing claw 103 hooked on a recess (not shown) provided on the one side surface of the circuit breaker 101, and an installation recess provided on the other side surface. The elastic claw 104 has a substantially letter-shaped shape that is hooked on the elastic deformation 101c. Thus, the fixing claw 103 is hooked into the recess of the circuit breaker 101 and the conductive bar 100 is inserted into the insertion groove 101a of the circuit breaker 101 (see FIG. 7A), and the other end of the circuit breaker 101 is inserted. The circuit breaker 101 can be attached to the substrate 102 by bending the elastic claw 104 by pushing the portion from above (see FIG. 7B) and hooking the elastic claw 104 on the mounting recess 101c of the circuit breaker 101. (See FIG. 7C). Further, in a state where the circuit breaker 101 is attached to the substrate 102, the elastic claw 104 is bent downward by manually pushing the elastic claw 104, thereby removing the elastic claw 104 from the mounting recess 101c and moving the circuit breaker 101 upward. The circuit breaker 101 can be removed from the substrate 102 by lifting it up.
Japanese Patent Laid-Open No. 11-69530

  However, in the above conventional example, since the bottom portion of the elastic claw 104 is fixed to the substrate 102, the effective spring length from the bottom portion of the elastic claw 104 to the portion hooked on the mounting recess 101 is short, and the elastic claw 104 is attached to the mounting recess 101c. Since a large force is required to hook on the elastic claw 104 or to remove the elastic claw 104 from the mounting recess 101c, there is a problem that it is difficult to attach and detach the circuit breaker 101 to the substrate 102.

  The present invention has been made in view of the above points, and an object thereof is to provide a distribution board in which a circuit breaker can be easily attached to and detached from a substrate.

In order to achieve the above object, a first aspect of the present invention provides a plurality of conductive bars arranged in parallel in the thickness direction at intervals, a circuit breaker inserted and connected from the width direction of the conductive bars, and a circuit breaker And a board provided with a latching portion that is detachably latched in a hooking recess provided on a side opposite to the insertion side of the circuit breaker in the insertion direction of the circuit breaker. A locking piece for locking with the recess, a supporting piece having one end fixed to the substrate, and a connecting piece for connecting the other end of the supporting piece and the locking piece, at least the connecting piece having elasticity, and It is freely deflectable in the inserting direction of the substrate thickness direction, and the circuit breaker, the engaging piece, the operation piece and circuit breaker inclined in a direction away from the substrate and the circuit breaker contacts are integrally formed, the substrate Is an insertion part into which one end of the support piece is detachably inserted, and a support piece which is penetrated in the thickness direction of the substrate Wherein the coupling piece in a state of inserting the end into the insertion portion is provided with an insertion hole for inserting.

According to a second aspect of the present invention, in the first aspect of the present invention, the locking piece has a pair of protrusions protruding outward from both end edges in the width direction, and the substrate is a hooking portion for hooking the protrusion. Is provided at the periphery of the insertion hole.

The invention of claim 3 is the invention of claim 2 , wherein the latching portion comprises a pair of latching pieces projecting on the side where the circuit breaker is attached across the insertion hole in the width direction of the insertion hole, A circuit breaker is fitted between the pair of latching pieces.

According to the first aspect of the present invention , the connecting piece can be freely bent in the thickness direction of the substrate and the inserting direction of the circuit breaker through the insertion hole, with one end of the support piece inserted into the insertion portion serving as a fulcrum . Since the locking piece also bends as it bends, the force required to bend the locking piece when the circuit breaker is attached to the board and when the circuit breaker is removed from the board can be reduced. The device can be easily attached to and detached from the substrate. Further, since the connecting piece and the locking piece can be easily bent by simply pressing the circuit breaker against the operation piece, the work of attaching the circuit breaker to the substrate can be easily performed. Even when the circuit breaker is removed from the board, the connecting piece and the locking piece can be easily bent by simply pressing the operation piece by hand, so the circuit breaker can be easily removed from the board. Can do.

According to the invention of claim 2 , the connecting piece and the locking piece are bent in advance, and the protrusion of the locking piece is hooked on the hooking portion to hold the connecting piece and the locking piece in a previously bent state. Therefore, when the circuit breaker is attached to and detached from the substrate, the circuit breaker is not pressed against the locking piece, so that the attaching / detaching operation can be easily performed.

According to the invention of claim 3 , since the circuit breaker is fitted between the pair of latch pieces when the circuit breaker is attached to the substrate, the circuit breaker can be positioned accurately, and therefore the circuit breaker is It is possible to prevent the connection portion of the circuit breaker with the conductive bar from being damaged by, for example, forcibly attaching the connector.

  Hereinafter, each embodiment of the distribution board of the present invention will be described with reference to the drawings. However, in the following description, the vertical direction in FIG. 4B is defined as the vertical direction.

(Embodiment 1)
Hereinafter, Embodiment 1 of the distribution board of the present invention will be described with reference to the drawings. As shown in FIG. 4A, the present embodiment includes a main breaker 7 and three conductive bars 5a to 5c formed in a long shape from a conductive material and connected to the secondary side of the main breaker 7, A plurality of circuit breakers 2 that are arranged in a direction substantially orthogonal to the longitudinal direction of the conductive bars 5a to 5c and are electrically connected to the corresponding conductive bars 5a to 5c are opened on one side. It is housed inside the panel body 10.

  As shown in FIG. 4B, the circuit breaker 2 is mounted on a substantially rectangular parallelepiped breaker body 20 and one side surface in the longitudinal direction of the breaker body 20 (hereinafter referred to as “front surface”). The cover 3 includes a handle 21 on the upper surface of the circuit breaker body 20 and two screw terminals (not shown) on the front surface to which the cover 3 is attached. Further, on the front surface of the circuit breaker body 20 and the lower portion of the other side surface in the longitudinal direction (hereinafter referred to as “rear surface”), a hooking recess 22 (to be described later) to which a fixed claw piece 40 and a locking piece 44 are respectively locked. A catching recess 22 provided on the front surface of the circuit breaker body 20 is provided).

  The inside of the cover 3 is partitioned into three rooms along the vertical direction by two partition walls (not shown), and a groove 30 is formed in the side wall facing each room. A connection terminal plate (not shown) is provided in each of the sections. Each of the connection terminal plates has a receiving blade 31 at one end, and the connection terminal plate in which the receiving blade 31 is placed in the upper section has the other end connected to one screw terminal of the circuit breaker body 20, The other end of the connection terminal plate in which the receiving blade 31 is placed in the section is connected to the other screw terminal of the circuit breaker body 20. The connection terminal plate is fixed to the screw terminal by tightening the screw at the screw terminal through a tool insertion hole (not shown) provided on the upper surface of the cover 3. Moreover, the recessed part (not shown) in which the fixed claw piece 40 mentioned later enters is formed in the site | part of the cover 3 corresponding to the hook recess 22 provided in the front surface of the circuit breaker 2. FIG.

  As shown in FIG. 4B, the panel body 10 has an upper surface opened and an outer lid 11 attached to the upper surface via a hinge 11a so as to be opened and closed. Further, as shown in FIG. 4A, a main board 70 made of a substantially square iron plate to which a main breaker 7 is attached and a plurality of circuit breakers 2 are attached to the inside of the board body 10. The board | substrate 12 which consists of a substantially rectangular iron plate is arrange | positioned. A pair of long attachment pieces 13 for attaching the main board 70 and the board 12 are provided along the longitudinal direction of the board body 10 inside the board body 10. The mounting piece 13 has holes (not shown) through which bolts 14 standing from the bottom surfaces of the four corners of the panel body 10 are inserted at both ends in the longitudinal direction, and the bolts 14 are inserted through the holes. Then, when the nut 15 is screwed into the bolt 14, the attachment piece 13 is fixed along the longitudinal direction of the panel body 10. The attachment piece 13 is provided with a plurality of screw insertion holes 13a along the longitudinal direction thereof. Thus, the main board 70 and the board 12 are placed on the pair of mounting pieces 13, and screw insertion holes (not shown) drilled in the four corners of the boards 70, 12 are used as the screws of the mounting pieces 13. The substrates 70 and 12 are fixed to the mounting piece 13 by overlapping with the insertion hole 13a and screwing with the mounting screw 51.

  One end of three connection bars 6a to 6c formed in a substantially L shape from a conductive material is screwed to the secondary side connection terminal 7a of the main breaker 7, and the three connection bars 6a to 6c are screwed. Among them, the connecting bars 6a and 6c on both sides are for the voltage electrode, and the central connecting bar 6c is for the neutral electrode. Further, the connecting bars 6a and 6b on both sides are bent in the vicinity of the connecting portion to the main breaker 7, the outer connecting bar 6a is on the upper surface side with respect to the central connecting bar 6c, and the inner connecting bar 6b is the central connecting bar. It arrange | positions at the lower surface side with respect to 6c, and each connection bar 6a-6c is each arrange | positioned at intervals in the width direction and the thickness direction.

  As shown in FIG. 4A, three staircase portions (not shown) that support the other end portions of the connection bars 6a to 6c are provided on the portion of the substrate 12 corresponding to the other end portions of the connection bars 6a to 6c. ) Are fixed by attachment screws 50, and the other ends of the connecting bars 6a to 6c and the one ends of the conductive bars 5a to 5c are respectively connected to each other. Yes. Moreover, the lower receiving member 17 which supports the other end part of conductive bar 5a-5c is being fixed to the site | part of the board | substrate 12 corresponding to the other end part of conductive bar 5a-5c.

  As described above, the conductive bars 5a to 5c are arranged side by side in the thickness direction in the order of the conductive bar 5a for the voltage electrode, the conductive bar 5c for the neutral electrode, and the conductive bar 5b for the voltage electrode from the upper surface side. The circuit breaker 2 runs substantially in the center of the width direction of the board 12 along the longitudinal direction of the board body 10 so that the circuit breaker 2 is substantially orthogonal to the longitudinal direction of the conductive bars 5a to 5c on both sides of the conductive bars 5a to 5c. A plurality are arranged. Thus, by inserting the conductive bars 5a to 5c into the cut grooves 31 of the cover 3 from the side in the width direction of the conductive bars 5a to 5c, the receiving blades 31 of the cover 3 are respectively connected to the conductive bar. The circuit breaker 2 is connected to a single-phase three-wire power line composed of conductive bars 5a to 5c.

  Hereinafter, a fixing part and a locking part for detachably attaching the circuit breaker 2 to the substrate 12 will be described. The fixing portion is a fixing claw piece 40 that is engaged with the hooking recess 22 provided on the front surface of the circuit breaker body 20, and as shown in FIG. 1B, the substrate 12 corresponding to the hooking recess 22. In this part, a part of the substrate 12 is cut and raised. Further, the fixed claw piece 40 is integrally formed with a taper 41 that is inclined so as to move away from the conductive bars 5a to 5c toward the tip (see FIG. 1A).

  As shown in FIG. 1 (b), an insertion portion 46 into which a support piece 42 to be described later is inserted, and the substrate 12, at a portion of the substrate 12 corresponding to the catch recess 22 provided on the rear surface of the circuit breaker body 20. A substantially rectangular insertion hole 47 penetrating in the thickness direction of the circuit breaker body 20 is arranged along the longitudinal direction of the circuit breaker body 20, and the insertion portion 46 is on the fixed claw piece 40 side with respect to the insertion hole 47. Is provided. As shown in FIG. 1A, the insertion portion 46 is formed by recessing a part of the substrate 12, and openings are provided on both end surfaces of the circuit breaker 2 in the longitudinal direction of the insertion portion 46. And communicates with the back side of the substrate 12 through the opening.

  As shown in FIG. 2 (a), the locking portion includes a substantially U-shaped locking piece 44 that locks in the hooking recess 22 provided on the rear surface of the circuit breaker body 20, and one end of the insertion portion 46. A support piece 42 to be inserted into the support piece 42, a substantially L-shaped connection piece 43 that connects the other end of the support piece 42 and one end of the locking piece 44, and the substrate 12 and The operation piece 45 is inclined in a direction away from the circuit breaker 2 (upper right direction in FIG. 2A). Each piece is integrally formed of an elastic material and has a substantially S-shape as a whole. . Further, as shown in FIG. 2B, a locking claw 42 a is formed by cutting and raising the portion of the support piece 42 inserted into the insertion portion 46 in the direction opposite to the insertion direction. The locking portion inserts the support piece 42 from the insertion hole 47 and inserts the tip of the support piece 42 from the opening of the insertion portion 46, whereby the locking claw 42 a is bent at the edge of the insertion portion 46. When the tip of the support portion 42 is further pushed into the insertion portion 46 side, the locking claw 42a enters the insertion portion 46 from the opening, and the tip of the locking claw 42a and the end of the opening are locked. Fixed to the substrate 12. Here, in a state where the support piece 42 is fixed to the substrate 12, the connecting piece 43 is disposed at a position where the connecting piece 43 can be inserted through the insertion hole 47. Therefore, the connecting piece 43, the locking piece 44, and the operation piece 45 are provided with the support piece. With one end of 42 as a fulcrum, it can be bent in the thickness direction of the substrate 12 and the insertion direction of the circuit breaker 2. The locking portion can be easily removed by pulling the support piece 42 in the direction opposite to the insertion direction in a state where the locking claw 42a is pressed from the front side of the substrate 12 and bent downward.

  Hereinafter, a method of attaching / detaching the circuit breaker 2 to / from the substrate 12 will be described with reference to FIG. When the circuit breaker 2 is attached to the substrate 12, first, the fixed claw piece 40 is inserted into the hook recess 22 on the front surface of the breaker body 20 through the recess of the cover 3, and the rear end portion of the breaker body 20 Is pressed against the operation piece 45. Then, the connecting piece 43 bends downward through the insertion hole 47 with one end of the support piece 42 as a fulcrum, and the locking piece 44 and the operating piece 45 also bend downward, so that the connecting piece 43, the locking piece 44 and the operating piece 45 are The circuit breaker 2 is placed on the upper surface of the substrate 12 while being bent downward (see FIG. 3A). Next, the circuit breaker 2 is moved along the upper surface of the substrate 12 toward the conductive bars 5a to 5c, and the conductive bars 5a to 5c are inserted into the kerfs 30 of the cover 3 (see FIG. 3B). Finally, when the circuit breaker 2 is inserted until the conductive bars 5 a to 5 c are connected to the receiving blade 31, the rear end portion of the breaker body 20 is separated from the operation piece 45, so that the connecting piece 43 and the locking piece 44 and The downward bending of the operating piece is released and returned upward, and the locking piece 44 is guided to the hooking recess 22 on the rear surface of the circuit breaker body 20 to lock the locking piece 44 with the hooking recess 22 ( (Refer FIG.3 (c)). Thus, the circuit breaker 2 is attached to the substrate 12 by the fixed claw piece 40 and the locking piece 44. In addition, since the taper 41 is formed in the fixed claw piece 40, it is easy to insert the fixed claw piece 40 into the hook recess 22 provided on the front surface of the circuit breaker body 20.

  Further, when removing the circuit breaker 2 from the substrate 12, the locking piece 44 and the catching recess are formed by pressing the operating piece 45 by hand and bending the connecting piece 43, the locking piece 44 and the operating piece 45 downward. The circuit breaker 2 can be easily detached from the board 12 by releasing the lock with the circuit board 22 and then pulling out the circuit breaker body 20 to the side opposite to the conductive bars 5a to 5c.

  As described above, with one end of the support piece 42 inserted into the insertion portion 46 as a fulcrum, the connection piece 43 can be freely bent in the thickness direction of the substrate 12 and the insertion direction of the circuit breaker 2 through the insertion hole 47. Therefore, as the connecting piece 43 is bent, the locking piece 44 and the operation piece 45 can be freely bent. For this reason, the effective spring length of the engaging portion is from one end of the support piece 42 to the engaging piece 44, which is longer than the effective spring length of the elastic claw 104 of the conventional example. In either case of attachment or removal of the circuit breaker 2 from the substrate 12, the force required to bend the locking piece 44 can be reduced, and therefore the circuit breaker 2 can be easily attached to and detached from the substrate 12. be able to.

(Embodiment 2)
Hereinafter, Embodiment 2 of the distribution board of the present invention will be described with reference to the drawings. However, since the basic configuration of this embodiment is the same as that of the first embodiment, portions common to those of the first embodiment are denoted by the same reference numerals and description thereof is omitted. The present embodiment is characterized by the operation piece 45 of the locking portion and the insertion hole 47 of the substrate 12, and the operation piece 45 is respectively outward from both end edges in the width direction as shown in FIG. A pair of protruding protrusions 45a are provided. Further, as shown in FIG. 5A, a latching portion 48 for latching the protrusion 45 a is provided on the periphery of the insertion hole 47. The latching portion 48 is composed of a pair of latching pieces 48a formed by cutting and raising the substrate 12 upward from both end edges in the width direction of the insertion hole 47 so as to have a substantially triangular cross section, and each vertex of the latching piece 48a. The protrusion 45a is hooked on the head (see FIGS. 6A and 6B).

  6B, the connecting piece 43, the locking piece 44, and the operating piece 45 are bent downward by pushing the operating piece 45 by hand, and the protrusion 45a provided on the operating piece 45 is provided. , The connecting piece 43, the locking piece 44, and the operation piece 45 can be held in a state of being bent downward. Therefore, when the circuit breaker 2 is attached to and detached from the substrate 12, the circuit breaker body 20 is not pressed by the locking piece 44 and the operation piece 45, so that the attaching / detaching work can be easily performed. In addition, the pair of latching pieces 48a sandwiching the insertion hole 47 is formed so that the interval is slightly larger than the width dimension of the circuit breaker body 20 of the circuit breaker 2. When the circuit breaker body 20 is fitted between the pair of latching pieces 48a when being attached to the substrate 12, the circuit breaker 2 can be accurately positioned. Therefore, the circuit breaker 2 is forcibly attached. It can prevent that the connection location with the electrically conductive bars 5a-5c of the circuit breaker 2 is damaged.

  In this embodiment, the operation piece 45 is provided with the projection 45a. However, the locking piece 44 may be provided with a projection that latches on the latching portion 48 in the same manner as the projection 45a. The same effect can be achieved.

It is a figure which shows the fixing | fixed part and latching | locking part in the electricity distribution panel of Embodiment 1 of this invention, (a) is a schematic top view, (b) is a schematic sectional drawing. It is a figure which shows the latching | locking part same as the above, (a) is a side view, (b) is a top view. It is a figure which shows the attachment method to the board | substrate of a circuit breaker same as the above, (a) is a figure which shows the state before inserting a conductive bar into a cut groove, (b) shows the state which inserted the conductive bar into the cut groove. (C) is a figure which shows the state which the installation of the circuit breaker was completed. In the same schematic diagram, (a) is a front view with the outer lid removed, and (b) is a cross-sectional view taken along the line A-A 'with the outer lid attached. It is a figure which shows the latching | locking part in the electricity distribution panel of Embodiment 2 of this invention, (a) is a schematic top view of a fixing | fixed part and a latching | locking part, (b) is a side view of a latching | locking part, (c) FIG. 4 is a top view of the locking portion. It is a figure which shows the holding method of a locking piece same as the above, (a) is a figure which shows the state before holding a locking piece, (b) is a figure which shows the state holding the locking piece. It is a figure which shows the attachment method to the board | substrate of the circuit breaker in the conventional distribution board, (a) is a figure which shows the state which inserted the electrically conductive bar in the insertion groove, (b) is the state which bent the elastic nail | claw. (C) is a figure showing the state where attachment of a circuit breaker was completed.

Explanation of symbols

12 Substrate 2 Circuit breaker 22 Hook recess 42 Support piece (locking part)
43 Connecting piece (locking part)
44 Locking piece (locking part)
5a-5c Conductive bar

Claims (3)

A plurality of conductive bars arranged side by side in the thickness direction, a circuit breaker inserted and connected from the width direction of the conductive bar, and the opposite side of the circuit breaker insertion side in the insertion direction of the circuit breaker And a board provided with a latching part that is detachably latched on a hooking recess provided on the side surface of the side, the latching part includes a latching piece that latches with the hooking recess, and one end on the board It consists of a fixed supporting piece and a connecting piece that connects the other end of the supporting piece and the locking piece. At least the connecting piece is elastic and can be bent in the thickness direction of the circuit board and in the insertion direction of the circuit breaker. The locking piece is integrally formed with an operation piece that is inclined in a direction away from the board and the circuit breaker and the circuit breaker contacts , and the board is an insertion portion into which one end of the support piece is detachably inserted. And a connecting piece in a state where one end of the support piece is inserted into the insertion portion and is provided in the thickness direction of the substrate. Panelboard, characterized in that a through hole for inserting. The locking piece has a pair of protrusions protruding outward from both end edges in the width direction, and the substrate has a locking portion for locking the protrusion provided on the periphery of the insertion hole. Item 1. The distribution board according to Item 1. The latching portion is composed of a pair of latching pieces projecting on the side where the circuit breaker is mounted across the insertion hole in the width direction of the insertion hole, and the circuit breaker is fitted between the pair of latching pieces. The distribution board according to claim 2, wherein the distribution board is included .

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