JP6858086B2 - Feed terminal block - Google Patents

Description

The present invention relates to a feed terminal block.

As described in Patent Document 1, a technique is known in which a feed terminal block forming a terminal plate having a plurality of terminal portions is connected to a terminal portion of a main circuit breaker to branch a voltage. The feed terminal block is generally provided with an upper terminal portion and a lower terminal portion in order to prevent a plurality of electric wires from being connected to one terminal portion of one pole. Further, in order to reduce the shape, the upper terminal portion and the lower terminal portion are arranged so as to overlap each other.

Japanese Unexamined Patent Publication No. 2002-42918

However, in such a structure, when a crimp terminal or the like is fixed to the upper terminal portion, the crimp terminal becomes an obstacle, and it is not possible to connect the crimp terminal to the lower terminal portion or retighten the screw. ..

The inventor of this case tried to solve this problem by diligently examining this point. An object of the present invention is to facilitate wiring to the terminal portion and retightening of screws while suppressing an increase in the size of the feed terminal block.

In order to solve the above problem, it is a feed terminal block provided with a plurality of terminal portions for one pole of a power distribution device, and the plurality of terminal portions are provided at positions shifted to the left and right from each other, and one terminal portion is provided. Is a feed terminal block arranged so as to overlap the partition wall partitioning between adjacent different electrode terminals in a top view.

Further, the partition wall portion is composed of an upper partition wall portion and a lower partition wall portion shifted to the left and right, the lower partition wall portion is provided so as to project to an adjacent different pole terminal side, and the one terminal portion is an upper surface. It is preferable that the configuration is arranged at a position overlapping the upper partition wall visually.

Further, the plurality of terminal portions are configured to be vertically displaced so that one of the terminal portions is located on the lower side, and the lower partition wall portion is provided so as to overlap the upper terminal portions of adjacent different poles. It is preferable to have a configuration.

Further, it is preferable that the partition wall portion has an inclined portion above the lower terminal portion and a notch portion extending toward the lower terminal portion is provided on the inclined portion.

In the present invention, it is possible to facilitate wiring to the terminal portion and retightening of screws while suppressing an increase in the size of the feed terminal block.

It is a perspective view of the feed terminal block of an embodiment. It is a front view of the feed terminal block of an embodiment. It is a front view of the internal unit of the distribution board which incorporated the feed terminal block of an embodiment. It is a perspective view of the feed terminal block of the embodiment seen from the back side. It is a perspective view of the terminal plate which connected the upper terminal part and the lower terminal part. It is a perspective view of the terminal plate which connected the upper terminal part and the lower terminal part, which was seen from the angle different from FIG. It is a perspective view of the terminal block which connected the input side wiring and the feed side wiring. It is a perspective view of the feed terminal block which attached the terminal cover. It is a top view of the feed terminal block of the embodiment.

A mode for carrying out the invention is shown below. As can be understood from FIGS. 1 to 3, in the feed terminal block 1 of the present embodiment, the terminal plate 5 having a plurality of terminal portions 21 and 22 which are terminal screws is one of the power distribution devices 9. It is connected to the pole. The plurality of terminal portions 21 and 22 are provided at positions where the respective terminal portions 21 and 22 are displaced to the left and right, and one terminal portion 22 is a partition wall that partitions between adjacent different polar terminal portions in a top view. It is arranged so as to overlap with the part 3. Therefore, it is possible to facilitate wiring to the terminal portions 21 and 22 (connection of the crimp terminal 75 formed on the electric wire) and retightening of the screw while suppressing the increase in size of the feed terminal block 1.

Hereinafter, the primary feed terminal block 1 connected to the power supply side of the main breaker, which is a switch, will be described as an example. A terminal plate 5 having a plurality of terminal portions 21 and 22 is connected to one pole of the power distribution device 9, but as shown in FIG. 1 and the like, the present embodiment includes terminal portions for three poles. It is a configuration. Further, a partition wall portion 3 is provided between the adjacent terminal portions, and the partition wall portion 3 insulates between the adjacent terminal portions.

The feed terminal block 1 of this embodiment is connected to a main circuit breaker, which is a power distribution device 9, and is a part of a distribution board. The input side wiring 71 is connected to the primary side of the main circuit breaker via the terminal portion 21 of the feed terminal block 1. The input side wiring 71 is connected to a commercial power source. As can be understood from FIG. 3, in the distribution board of the present embodiment, a plurality of branch breakers 62 are attached to the secondary side of the main breaker. Further, a primary feed breaker 63 connected to the primary side of the main breaker is provided, and the main breaker and the primary feed breaker 63 are connected by a feed side wiring 72 via a terminal portion 22 of the feed terminal block 1. ..

As shown in FIG. 4, the feed terminal block 1 is formed with a plurality of openings serving as ventilation holes 19 at positions facing the switch, and exhaust of arc gas generated when the contact of the switch is opened from the exhaust port of the switch. Is possible.

As shown in FIGS. 5 and 6, the terminal portion of this embodiment is connected to the terminal plate 5. The terminal plate 5 is configured in a substantially U-shape in a rearward view so that the upper terminal portion 21 and the lower terminal portion 22 are connected to each other. More specifically, the terminal plate 5 has an upper terminal seat 51 to which the upper terminal portion 21 is connected, a lower terminal seat 52 to which the lower terminal portion 22 is connected, and an upper terminal seat 51 and a lower terminal seat 52. A connecting portion 53 for connecting is provided. In this embodiment, the upper terminal seat 51 and the lower terminal seat 52 are configured to be parallel to each other.

The connecting portion 53 is formed so as not to block the ventilation hole 19 of the feed terminal block 1. In the present embodiment, as can be understood from FIGS. 1 and 2, the terminal plate 5 in which the flat plate is bent is arranged so that the flat plate-like surface does not face in the front-rear direction, and the terminal plate 5 is arranged from the exhaust port of the switch. Exhaust is possible.

The terminal plate 5 is provided with a substantially U-shaped connecting portion 54. The connecting portion 54 is provided so as to protrude from the upper terminal seat 51. In the example shown in FIG. 3, the connecting portion 54 is connected to one pole of the main circuit breaker.

The upper terminal portion 21 and the lower terminal portion 22 are arranged so as to be vertically, horizontally, and front and rear, respectively. Further, the upper terminal portion 21 and the lower terminal portion 22 are arranged so as to overlap each other only in the front-rear direction. That is, since the upper terminal portion 21 and the lower terminal portion 22 are arranged so as not to overlap in the left-right direction, as shown in FIG. 7, even when the crimp terminal 75 is connected to the upper terminal portion 21, the crimp terminal The tool can be operated by approaching the lower terminal portion 22 while avoiding the 75. Since the upper terminal portion 21 and the lower terminal portion 22 overlap in the front-rear direction, it is possible to prevent the feed terminal block 1 from becoming long in the front-rear direction.

As can be understood from FIG. 1 and the like, in the present embodiment, the upper terminal portion 21 is a screw having a size larger than that of the lower terminal portion 22. Therefore, the upper terminal portion 21 can be connected to an electric wire having a large allowable current. The lower terminal portion 22 is for feeding, and is connected to, for example, a seismic relay, a measuring device, a breaker for an emergency lamp to prevent the lamp from turning off even if the main breaker trips. Will be done. As described above, since the distribution device having a capacity larger than that of the plurality of branch breakers 62 connected to the load side of the main breaker is not connected, the electric wire having a smaller allowable current than the electric wire connected to the upper terminal portion 21 is connected. It doesn't matter if it is a thing.

As shown in FIG. 9, the partition wall portion 3 of the present embodiment is provided so as to surround the left and right sides of the lower terminal portion 22 from the upper terminal portion 21 in a top view. Further, in the top view, the inclined portion 31 is configured so that the portion located on the side of the lower terminal portion 22 is inclined in the direction toward the lower terminal portion 22. For example, when the inclined portion 31 is not formed, a corner portion is formed at the upper end portion, and this corner portion is the portion where the strength is the weakest. When connecting the crimp terminal 75 provided in the thick cable to the terminal portion, the cable may damage the corner portion. Therefore, the open end portion is configured to be inclined.

Further, the inclined portion 31 of the partition wall portion 3 is provided with a notch portion 32 at a portion located on the side of the lower terminal portion 22 in a top view. The notch portion 32 is provided to secure a space for inserting a tool such as a screwdriver for tightening the lower terminal portion 22, and is provided so as to extend toward the lower terminal portion 22. .. The presence of the notch 32 makes it easy to insert the tool from above or behind the notch 32 and bring it closer to the lower terminal 22 when tightening the lower terminal 22 or the like. By exposing the lower terminal portion 22 from the notch portion 32 of the partition wall portion 3 in this way, the tool for connecting the electric wire can pass through, so that the connection of the electric wire or the confirmation of retightening after the connection can be confirmed. Access is possible when doing so.

The partition wall portion 3 is composed of an upper partition wall portion 3a and a lower partition wall portion 3b, and is formed so as to be offset from each other to the left and right, and the lower partition wall portion 3b is provided so as to project toward the upper terminal portion 21 of an adjacent different pole. More specifically, it extends so as to be located below the upper terminal portion 21 of the different pole. That is, in the top view, the upper terminal portion 21 of the different pole adjacent to the lower partition wall portion 3b of the partition wall portion 3 is arranged so as to partially overlap in the vertical direction or the front-rear direction. In order to have such a configuration, the partition wall portion 3 has a substantially crank shape when viewed in the rear direction. The lower terminal seat 52 is arranged so as to extend to the crank-shaped partition wall portion 3, and the lower partition wall portion 3b covers a part of the lower terminal seat 52. Therefore, in the top view, the lower terminal portion 22 and the upper partition wall portion 3a are arranged at positions where they partially overlap in the vertical direction or the front-rear direction. The size of the feed terminal block 1 in the left-right direction is increased by configuring the lower partition wall portion 3b formed so as to cover the lower terminal portion 22 so as to partially overlap the upper terminal portion 21 of a different electrode. It is possible to suppress the expansion. Further, the inclined portion 31 of the present embodiment is formed on the upper partition wall portion 3a.

The partition wall portion 3 is provided with a holding portion 34 that regulates the vertical movement of the lower terminal seat 52. The upper and lower terminal seats are in contact with the partition wall portion 3 and their movement in the left-right direction is restricted. Further, the hole 69 through which the connecting portion 54 passes can prevent the terminal portion from rising. In the front-rear direction, the terminal portion 21 and the terminal portion 22 of the terminal screw are fixed to the feed terminal block 1 via the upper terminal seat 51 and the lower terminal seat 52 to prevent movement.

As shown in FIG. 8, the feed terminal block 1 of the present embodiment can be attached with a terminal cover 8 that covers the upper terminal portion 21 and the like from above. In the present embodiment, the terminal cover 8 is prevented from coming off by using the terminal cover support portion 18 or the like provided at the end of the feed terminal block 1. The terminal cover support portion 18 is provided with a recess into which the terminal cover 8 can be inserted.

Although the above description has focused on one embodiment, the present invention is not limited to the above embodiment and can be in various modes. For example, in the embodiment, the feed terminal block is a primary feed terminal block connected to the power supply side of the main breaker, but it may be a secondary feed terminal block formed on the load side to which the load is connected.

1 Feed terminal block 3 Bulkhead 3a Upper bulkhead 3b Lower bulkhead 9 Power distribution equipment 21 Upper terminal 22 Lower terminal 31 Inclined 32 Notched

Claims (4)

A feed terminal block provided with a plurality of terminals for one pole of a power distribution device. The plurality of terminals are provided at positions shifted to the left and right from each other, and one terminal is adjacent to each other in a top view. A feed terminal block that is placed so as to overlap the partition wall that separates the different pole terminals. The partition wall is composed of an upper partition wall and a lower partition wall shifted to the left and right, and the lower partition wall is provided so as to project to an adjacent different electrode terminal side, and one of the terminal portions is viewed from above. The feed terminal block according to claim 1, which is arranged at a position overlapping the upper partition wall portion. A claim that the plurality of terminal portions are configured to be vertically displaced so that one of the terminal portions is located on the lower side, and the lower partition wall portion is provided so as to overlap the upper terminal portions of adjacent different poles. The feed terminal block according to 1 or 2. The feed terminal block according to claim 1 to 3, wherein the partition wall portion is provided with an inclined portion above the lower terminal portion, and a notch portion extending toward the lower terminal portion is provided on the inclined portion.

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