JP5942186B2 - Protective cover support member - Google Patents

Description

  The present invention relates to a protective cover support member for attaching a protective cover to a bus bar of a distribution board to which a branch bar is connected.

  In a general distribution board, a plug-in system and a branch bar system are used to connect the branch breaker to the bus bar. In the distribution bar type distribution board, the bus bar is connected to the main breaker via a lead bar, and a number of branch breakers are connected to the bus bar.

  The power distribution board is provided with an inner door for safety. Only the handle part of the breaker is exposed from the inner door so that the handle can be operated. However, even when the inner door is opened, a protective cover is attached to the upper surface of the bus bar so as not to expose the charging part such as the bus bar, and an electric shock accident is prevented (Patent Document 1). In this specification, the upper and lower sides are expressed in a state where the distribution board is placed horizontally, and the surface on the door side is referred to as the upper surface.

  Conventionally, it has been common to mount a columnar or flat plate-shaped support bracket on a device mounting plate of a distribution board and mount a protective cover on the support bracket. However, it is necessary to change the height of the support fitting in accordance with the height of the internal device, and there is a problem that the stability is deteriorated when the height of the support fitting is increased. In addition, in the rail-type distribution board that mounts internal equipment on the rail, it is necessary to add an equipment mounting plate for attaching the support bracket, and there is a problem that it is difficult to retrofit after the distribution board is installed. .

  In addition, since the plug is inserted into the bus bar in the plug-in type distribution board, a protective cover fitting can be provided above the central bus bar, but in the branch bar type distribution board, the branch bar is connected to the bus bar. Since the bus bar has a connection hole for the branch bar, the protective cover fittings can be provided only at both ends of the bus bar. For this reason, there is a problem that a space for the protective cover attachment is required at both ends of the bus bar, which hinders downsizing of the distribution board.

JP 2005-51909 A

  Accordingly, a main object of the present invention is to provide a protective cover support member that can solve the above-described conventional problems and can stably support the protective cover of the bus bar without requiring extra space. Another object of the present invention is to provide a protective cover support member that can be retrofitted after construction of a distribution board.

The present invention made to solve the above-mentioned problems is a protective cover support member for attaching a protective cover to the upper surface of a bus bar to which the branch breaker is connected by the branch bar. The support portion of the cover is integrally connected by a connecting portion having a passage portion for the branch bar on the side surface , and the passage portion of the branch bar allows the branch bar to pass from the side surface. Is.

  As in claim 2, it is preferable that the passage portion of the branch bar is provided with an opening that exposes the head of a screw for fixing the branch bar passing therethrough to the bus bar. Further, as in claim 3, the passage portion of the branch bar can be shaped so as to straddle the upper portion of the branch bar, and the attachment portion to the bus bar is regulated by the bus bar as in claim 4. It can be provided with a detent.

  According to the present invention, since the protective cover support member can be attached using the space between the branch bar, it is not necessary to provide a space for the protective cover attachment at both ends of the bus bar. The distribution board can be downsized.

  According to the second aspect of the present invention, since the opening for exposing the head portion of the screw is provided in the passage portion of the branch bar, the screw can be easily tightened.

  According to invention of Claim 3, a protective cover support member can be retrofitted.

  According to the invention of claim 4, since the detents restricted by the bus bar are provided at the mounting portion to the bus bar, it is possible to easily perform the mounting operation with screws.

It is a perspective view which shows the internal structure of a distribution board. It is a perspective view which shows the state which attached the protective cover support member of this invention. It is a perspective view which shows the protective cover support member of 1st Embodiment. It is a top view which shows the state which attached the protective cover support member. It is a perspective view which shows attachment of a protective cover. It is a perspective view which shows the state which attached the protective cover support member. It is a perspective view which shows the protective cover support member of 2nd Embodiment. It is a perspective view which shows the state which attached the protective cover support member of 2nd Embodiment. It is a perspective view which shows the protective cover support member of 3rd Embodiment. It is a perspective view which shows the state which attached the protective cover support member of 3rd Embodiment.

Preferred embodiments of the present invention are shown below.
FIG. 1 is a perspective view showing an internal structure of a distribution board. 1 is a main breaker, 2 is three bus bars connected to secondary terminals of the main breaker 1 through lead bars 3. A large number of branch breakers 4 are arranged on both sides of the bus bar 2. Although FIG. 1 is illustrated with the distribution board attached to the wall surface, all of FIG. 2 and subsequent figures are illustrated with the distribution board placed horizontally.

  As shown in FIG. 2, in this embodiment, two bus bars 2 are arranged at low positions on both sides and one at a high position in the center. Each bus bar 2 is formed with a connection hole for screwing the branch bar 5 at a predetermined interval, and the branch breaker 4 is connected to two necessary bus bars 2 and the branch bar 5. In this embodiment, the connection holes are formed at a pitch of 25 mm, the interval between the adjacent branch bars 5 and 5 is only a few millimeters, and the bus bar 2 is exposed in this portion.

The protective cover support member 10 of the present invention is attached to the central bus bar 2 and the branch bar 5. FIG. 3 is an enlarged perspective view of the protective cover support member 10 according to the present invention, 11 is a support portion of a U-shaped protective cover when viewed from the upper surface formed at the upper portion, and 12 is a bus bar 2 formed at the lower portion. It is an attachment part to. The mounting portion 12 to the bus bar and the support portion 11 of the protective cover are connected and integrated by a connecting portion 13. A branch bar passing portion 14 is formed on the side surface of the connecting portion 13. Yes.

Specifically, upper side portions 15 and 15 rise from both ends of the attachment portion 12 to the bus bar 2, and the upper ends thereof are connected to the support portion 11 of the protective cover. Plate-like leg portions 16 and 16 that abut on the bus bar 2 are suspended from both sides of the lower portion of the support portion 11 of the protective cover, and the lower side of the support portion 11 sandwiched between the leg portions 16 and 16. The space is a passage portion 14 of the branch bar. Passing portion of the distribution bar 14, Ri shape der across the top of the distribution bar 5, a structure for passing the distribution bar 5 from the side. At four positions at the lower ends of the leg portions 16, 16 are formed detent portions 17 that engage with both side surfaces of the bus bar 2. The interval between the rotation stoppers 17 and 17 is slightly larger than the width of the bus bar 2. The anti-rotation portion 17 improves the stability.

  The upper surface of the support portion 11 of the U-shaped protective cover is a flat surface, and a screw hole 19 for fixing the protective cover 18 is formed as shown in FIG. Moreover, the center part is the opening part 20 which exposes the head part of the screw for fixing the branch bar 5 to the bus bar 2, and has a structure in which the screw can be tightened by inserting a driver. The screws are tightened when the looseness at the time of product shipment is tightened at the time of installation or during periodic inspection.

The protective cover support member 10 of the present invention configured as described above is attached to the central high-level bus bar 2 near the end of the bus bar 2 as shown in FIG. Are fixed to the connection hole of the bus bar 2 with screws. Although the branch bar 5 extends from the central bus bar 2 to the left and right toward the branch breaker 4, the branch bar passing portion 14 can be passed from the side surface, which obstructs the mounting of the protective cover support member 10. Does not occur. As shown in FIGS. 5 and 6, the protective cover 18 is fixed to the protective cover support portion 11 of the protective cover support member 10 with a screw.

  Thus, since the protective cover support member 10 of the present invention can be attached to the bus bar 2 to which the branch bar 5 is connected, a dedicated space is not required as in the prior art, and the protective cover 18 is stable. Can support well. Furthermore, retrofitting after distribution board construction is also possible.

  7 and 8 show the second embodiment of the present invention. In the second embodiment, a pair of hook-like elastic locking portions 21 are formed on the support portion 11 of the protective cover. In this case, a hole into which the elastic locking part 21 is inserted may be formed in the protective cover 18.

  9 and 10 are views showing a third embodiment of the present invention. In both the first and second embodiments described above, the passage portion 14 of the branch bar has a shape in which the lower surface is opened, and the branch bar 5 is attached to the bus bar 2 so as to cover the branch bar 5 from above. However, in the third embodiment shown in FIGS. 9 and 10, the connecting portion 13 of the mounting portion 12 to the bus bar and the support portion 11 of the protective cover is at the lower end position, and the upper side thereof is the passage portion 14 of the branch bar. ing.

  The protective cover support member 10 having this structure needs to make the connecting portion 13 under the branch bar 5. For this reason, when retrofitting, it is necessary to remove one branch bar 5, but the other effects are the same as in the other embodiments.

DESCRIPTION OF SYMBOLS 1 Main breaker 2 Bus bar 3 Lead bar 4 Branch breaker 5 Branch bar 10 Protection cover support member 11 Protection cover support part 12 Attachment part to bus bar 13 Connection part 14 Passing part 15 of branch bar Upper side part 16 Leg part 17 Anti-rotation part 18 Protective cover 19 Screw hole 20 Opening part 21 Elastic locking part

Claims (4)

A protective cover support member for attaching a protective cover to the upper surface of the bus bar to which the branch breaker is connected by the branch bar, wherein the mounting portion to the bus bar and the support portion of the protective cover are provided on the side of the branch bar passage portion. A protective cover supporting member , wherein the branching bar passage part passes the branching bar from the side surface.   2. The protective cover support member according to claim 1, wherein the passage portion of the branch bar includes an opening that exposes a head portion of a screw for fixing the branch bar to the bus bar.   The protective cover support member according to claim 1, wherein the passage portion of the branch bar has a shape straddling the upper portion of the branch bar.   The protective cover support member according to claim 1, wherein the attachment portion to the bus bar is provided with a detent restricted by the bus bar.

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