JPH11354003A - Circuit breaker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate a connecting work for terminals and prevent a short- circuit accident when tightening the terminal screws under a current-carring condition. SOLUTION: Between the side surface of a placing wall 5 and an end surface of a power source side terminal 4, a thin plate member 10 is attached, which extends to an upward direction from an upper end of the placing wall 5 so as to separate the power source side terminals 3, 4 from each other. Accordingly, as separate the power source terminals 3, 4 by means of the thin plat member 10, a belt-shaped rectangular contactor (so called a conductive bar) is connected to the power source terminals 3, 4 by terminal screws 3a, 4a in such a way that the contactor is fitted from an upper part of a case 1. For that reason, a replacing work for a circuit breaker is facilitated in a panel board. While, without being brought into contact, a conductive part on a driver side surface with the terminal screw 3a or the terminal plate 3b of the power source side terminal 3 in the upper step when the terminal screw 4a of the power source side terminal 4 in the lower step is tightened, a short-circuit accident caused under a current-carrying condition is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit breaker in which two screw-type terminals are arranged between both side walls at the end of a case so as to be vertically different from each other in the direction between the two side walls.

[0002]

2. Description of the Related Art Conventionally, there has been provided a circuit breaker in which two screw-type terminals are arranged side by side between both side walls of an end of a case, and a partition wall for securing an insulation distance is provided between the terminals. Have been. In this case, since the partition wall is formed to have substantially the same thickness as both side walls of the case, the width of each terminal in the direction between the side walls is reduced, so that the band connected to each terminal in the distribution board is provided. There is a problem that the width of the plate-shaped conductive bar must be reduced, and a conductive bar having a sufficient pressure resistance cannot be used.

As a solution to the above problem, there is a circuit breaker described in Utility Model Registration No. 2517743.

[0004] The circuit breaker described in the above publication is
Two screw-type terminals are arranged between both side walls at the end of the case so as to be vertically different in the direction between the two side walls, and a partition wall erected between these terminals protrudes toward the upper side of the lower terminal. By doing so, a sufficient insulation distance can be ensured without reducing the width of each terminal.

[0005]

However, in the conventional example described in the above-mentioned publication, since the partition wall is bulged to the lower terminal side, the conductive bar is connected to each terminal from the upper side of the case. That is, there is a problem that the terminal screw cannot be connected to the terminal by inserting the terminal screw into the screw insertion hole of the conductive bar and dropping the terminal screw together with the terminal screw from above. On the other hand, it is conceivable to remove the partition, but in this case, the conductive bar can be dropped from the top and connected, but when the conductive bar is connected, when tightening the terminal screw of the lower terminal, There is a risk that the conductive part of the driver will contact the upper terminal and cause a short circuit accident (especially when the end surface of the upper terminal is flush with the side surface of the mounting part on which it is mounted). Likely to do so).

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to easily connect a terminal and prevent a short circuit accident when retightening a terminal screw in an energized state. It is to provide a circuit breaker.

[0007]

According to the first aspect of the present invention, in order to achieve the above object, two screw-type terminals are provided between both side walls at the end of the case so as to be vertically different in the direction between the two side walls. In addition, in a circuit breaker in which the upper terminal is disposed on the upper surface of the mounting wall extending upward from the side surface of the lower terminal, the upper end is disposed between the mounting wall and the end surface of the lower terminal in the upward direction. It is characterized by attaching a thin plate member that extends and separates the side surface of the upper terminal from the side of the lower terminal, making it easy to connect the terminals. And the replacement work of the circuit breaker in the distribution board becomes easy. In addition, since each terminal is isolated by the thin plate member, the conductive portion on the side surface of the driver does not come into contact with the upper terminal when the lower terminal is retightened, so that a short circuit accident in an energized state can be prevented.

According to a second aspect of the present invention, in order to achieve the above object, two screw-type terminals are provided between both side walls of an end portion of the case so as to be vertically different from each other in the direction between the two side walls. In a circuit breaker in which an upper terminal is disposed on an upper surface of a mounting wall extending upward from a side surface, a partition member that separates a side surface of the upper terminal from a lower terminal is provided on a side surface of the mounting wall. It is characterized in that it is detachably attached, the connection work of the terminals is easy, for example, it is possible to remove the partition member, fit a strip-shaped conductive bar to each terminal from the upper direction, and connect it with terminal screws, The replacement work of the circuit breaker in the distribution board becomes easy. Also, after connecting the conductive bar, a partition member can be attached to isolate each terminal, and when the lower terminal is retightened, the conductive portion on the side of the driver does not contact the upper terminal, so that the terminal can be energized. Short circuit accidents can be prevented.

According to a third aspect of the present invention, in order to achieve the above object, two screw-type terminals are provided between both side walls of an end portion of the case so as to be vertically different from each other in a direction between the two side walls, and the lower terminal In a circuit breaker in which an upper terminal is disposed on an upper surface of a mounting wall extending upward from a side surface, a projected image of each terminal in a terminal screw axis direction overlaps with any terminal at an end of the case. And a position where the projected image overlaps a part of the lower terminal and partially abuts against the mounting wall to isolate the side surface of the upper terminal and the lower terminal from each other. It is characterized in that a partition is provided, and the connection work of the terminals is easy, for example, if the partition is moved to a position where the projected image of the terminal screw axis direction of each terminal does not overlap with any terminal, a strip-shaped plate is formed on each terminal. The conductive bar can be fitted from the top and connected with terminal screws. Can work replacement of the circuit breaker in the distribution board is facilitated. Also, after connecting the conductive bar, the projected image overlaps a part of the lower terminal, and the partition moves to a position where a part of the partition comes into contact with the mounting wall to separate the side surface of the upper terminal from the lower terminal. By doing so, each terminal can be isolated by the partition, and the conductive portion on the side surface of the driver does not come into contact with the upper terminal when the lower terminal is retightened, so that a short circuit accident in the energized state can be prevented.

According to a fourth aspect of the present invention, in the third aspect of the present invention, a locking portion for locking the locked portion provided on the partition wall in contact with the partition wall is provided on the mounting wall. The partition can be stably held at a position where each terminal is isolated.

According to a fifth aspect of the present invention, in order to achieve the above object, two screw-type terminals are provided between both side walls of an end portion of the case so as to be vertically different from each other in the direction between the two side walls. In a circuit breaker in which an upper terminal is provided on an upper surface of a mounting wall extending upward from a side surface and a terminal cover for closing an upper portion of each terminal is mounted on an upper surface of an end of the case, The terminal connection is characterized in that a partition portion for separating the side surface from the lower terminal and a driver insertion hole facing each terminal with the terminal cover attached to the end of the case are provided in the terminal cover. Work is easy, for example,
With the terminal cover removed, a strip-shaped conductive bar can be fitted to each terminal from above and connected with terminal screws, which facilitates replacement work of the circuit breaker in the distribution board. When the terminal cover is attached, each terminal is isolated by the partition of the terminal cover, and when the driver is inserted through the driver insertion hole and the lower terminal is tightened, the conductive part on the side of the driver contacts the upper terminal. Therefore, it is possible to prevent a short circuit accident in an energized state.

According to a sixth aspect of the present invention, in order to achieve the above object, two screw-type terminals are provided between both side walls of an end portion of the case so as to be vertically different from each other in the direction between the two side walls, and the lower terminal In a circuit breaker in which an upper terminal is disposed on an upper surface of a mounting wall extending upward from a side surface and a terminal cover for closing an upper portion of each terminal is mounted on an upper surface of an end of the case, the terminal cover is A partition wall for separating the side surface of the upper terminal from the lower terminal, and a cover portion that is connected to the partition wall and that can be deformed between a position where each terminal is closed and a position where the terminal is not closed. The terminal connection work is easy, for example, a strip-shaped conductive bar can be fitted to each terminal from the upper direction with the terminal cover removed and connected with terminal screws, and inside the distribution board The replacement work of the circuit breaker of the above becomes easy. Also, if the terminal cover is attached, each terminal is isolated by the partition of the terminal cover, the cover is deformed to a position where each terminal is not blocked, the driver is inserted, and the lower terminal is retightened in this state Sometimes, the conductive portion on the side surface of the driver does not come into contact with the upper terminal, thereby preventing a short circuit accident in the energized state.

According to a seventh aspect of the present invention, in order to achieve the above object, two screw-type terminals are provided between both side walls at the end of the case so as to be vertically different from each other in the direction between the two side walls. An upper terminal is disposed on the upper surface of the mounting wall extending upward from the side surface, and is connected to the strip-shaped conductive bar by insertion so that each terminal is electrically connected to the conductive bar. In a circuit breaker comprising an adapter and a terminal cover for closing an upper part of each terminal between the case and the connection conversion adapter, the terminal cover is detachably disposed on an end of the case or the connection conversion adapter. A partition wall for separating the upper terminal side surface from the lower terminal, and a driver insertion hole facing each terminal when the terminal cover is attached to an end of a case or a connection conversion adapter. thing Characterized, work can connect the terminal screw becomes easier fitting connection adapter to the respective terminals when opening the terminal cover from the upper direction. When the terminal cover is attached, each terminal is isolated by the partition of the terminal cover, and when the driver is inserted through the driver insertion hole and the lower terminal is tightened, the conductive part on the side of the driver contacts the upper terminal. Therefore, it is possible to prevent a short circuit accident in an energized state.

[0014]

(Embodiment 1) FIG. 1 is an external perspective view showing Embodiment 1 of the present invention, and FIG. 2 is a side view seen from power supply terminals 3 and 4. As shown in FIG. A case 1 of this circuit breaker is formed of an insulating material such as a synthetic resin into a substantially box shape, and a pair of power supply side terminals 3 and 4 is provided between both side walls 2a and 2b at one longitudinal end.
Are provided in the direction between the side walls 2a and 2b (short width direction orthogonal to the longitudinal direction of the case 1) in a vertically different step. A protruding portion 1a is protruded substantially at the center of the upper surface of the case 1, and an operation handle 6 for operating an opening / closing mechanism described later protrudes from a rectangular window hole 1b provided in the protruding portion 1a. It is. Attachments 7, 7 for fixing to the distribution board are provided at the lower part of the side surface facing the longitudinal direction of the case 1, and fixing members (not shown) fixed to the distribution board are attached. The case 1 is attached to the distribution board by being fitted into 7,7.

A pair of load terminals (not shown) having a so-called quick-connecting terminal structure are provided between both side walls at the other end in the longitudinal direction of the case 1 and are respectively connected to a pair of power supply terminals 3 and 4. It is. These load-side terminals may have the same screw type structure as the power supply-side terminals 3 and 4 in addition to the quick connection terminal structure. An opening / closing mechanism for opening and closing the electrical connection between the power supply side terminals 3 and 4 and the load side terminal is provided in the case 1. Current (short circuit current, ground fault current, etc.)
When this flows, it opens automatically to protect the circuit. However, since the structure and operation of the opening and closing mechanism are well known in the art, illustration and detailed description are omitted.

The two power supply terminals 3 and 4 are composed of terminal plates 3b and 4b extending from the inside of the case 1, and these terminal plates 3b and 4b.
and terminal screws 3a and 4a which are screwed to the terminals b and 4b. The mounting wall 5 extends from the vicinity of the side surface of the lower power supply terminal 4 toward the upper part of the case 1, and the upper power supply terminal 3 is disposed on the upper surface of the mounting wall 5.
Here, in the upper power supply terminal 3, the end face of the terminal plate 3b and the side surface of the mounting wall 5 (the surface facing the side wall 2b, the same applies hereinafter) are substantially flush. Further, the side wall 2 b on the side adjacent to the lower power supply terminal 4 is cut out below the upper surface of the case 1 in order to facilitate the work of connecting wires and the like to the lower power supply terminal 4.

Incidentally, the side surface of the mounting wall 5 and the power supply side terminal 4
A thin plate member 10 extending upward from the upper end of the mounting wall 5 and isolating the two power supply terminals 3 and 4 is attached between the terminal plate 4b and the end face. The thin plate member 10 is formed of a material having an insulating property and being elastically deformable, for example, a thin polyester film. The lower end of the thin plate member 10 is sandwiched between the terminal plate 4 b of the lower power supply side terminal 4 and the mounting wall 5, and the upper part thereof is engaged with the locking projection 8 projecting from the upper side surface of the case 1. By stopping, the thin plate member 10 is attached to the case 1.
In addition, since the thin plate member 10 is formed of a material which can be elastically deformed, it can be easily attached to the case 1.

In this embodiment, since the upper and lower power supply terminals 3 and 4 are separated by the thin plate member 10 having a small thickness, the distance between the thin plate member 10 and the side walls 2a and 2b is reduced. In addition to ensuring a sufficient space, there is no extra protrusion as in the prior art described in the official gazette. It can be connected to the side terminals 3 and 4. Therefore, the work of replacing the circuit breaker in the distribution board becomes easy. In addition, since the two power supply terminals 3 and 4 are separated by the thin plate member 10, when the terminal screws 4a of the lower power supply terminal 4 are retightened, the conductive portion on the driver side faces the upper power supply terminal 3 Without contacting the terminal screw 3a or the terminal plate 3b, it is possible to prevent the occurrence of a short circuit accident in an energized state.

(Embodiment 2) FIG. 3 shows Embodiment 2 of the present invention.
This will be described with reference to FIGS. However, since the basic configuration of the present embodiment is the same as that of the first embodiment, common portions are denoted by the same reference numerals, and description thereof will be omitted. Only the configuration that is a feature of the present embodiment will be described.

That is, in this embodiment, the partition member 1 for separating the side surface of the upper power supply terminal 3 from the lower power supply terminal 4 is provided.
1 is detachably attached to a side surface of the case 1 facing the mounting wall 5.

The partition member 11 has a substantially trapezoidal main portion 11a made of an insulating material such as a synthetic resin, and a flange portion 11b protruding on both sides from a side end face of the main portion 11a.

On the other hand, a groove 12 into which a flange 11b of the partition member 11 is press-fitted is provided on the upper side of the case 1 facing the mounting wall 5.
Are formed from the upper surface of the case 1 to a position reaching the upper end of the mounting wall 5. Then, the partition member 11 is attached to the case 1 by slidingly inserting the flange portion 11b of the partition member 11 into the groove portion 12 from above the case 1 and press-fitting the same. Needless to say, the partition member 11 can be removed from the case 1 as needed.

In this embodiment, the conductive bar can be connected to each of the power supply terminals 3 and 4 by inserting the conductive bar from the upper part of the case 1 with the partition member 11 removed. The replacement work of the circuit breaker in the above becomes easy. If the partition member 11 is attached to the case 1 after the conductive bars are connected to the power supply terminals 3 and 4, the two power supply terminals 3 and 4 are isolated by the partition member 11. When the terminal screw 4a of the terminal 4 is retightened, the conductive portion on the side surface of the driver does not come into contact with the terminal screw 3a or the terminal plate 3b of the upper power supply terminal 3, thereby preventing the occurrence of a short circuit accident in the energized state. Can be.

Embodiment 3 FIG. 6 shows Embodiment 3 of the present invention.
This will be described with reference to FIGS. However, since the basic configuration of the present embodiment is the same as that of the first embodiment, common portions are denoted by the same reference numerals, and description thereof will be omitted. Only the configuration that is a feature of the present embodiment will be described.

That is, in the present embodiment, each of the power supply terminals 3 and 4 is attached to the end of the case 1 where the power supply terminals 3 and 4 are provided.
The position where the projected images in the axial direction of the terminal screws 3a and 4a do not overlap with any of the power supply terminals 3 and 4 (see FIG. 6), and the projected images overlap and partially overlap the lower power supply terminals 4 in the lower stage. The terminal plate 3 of the power supply side terminal 3 in the upper stage, part of which abuts on the mounting wall 5
b Position for isolating between the side surface and the lower power supply terminal 4 (FIG. 8)
(See FIG. 1).

The partition 13 is made of an insulating material such as a synthetic resin and has a substantially trapezoidal main portion 13a, a substantially hook-shaped engaging portion 13b projecting to one side from a side end face of the main portion 13a, and an engaging portion 13b. 13b, a locking recess 13c recessed in the vicinity of the main portion 13
The engagement piece 13b and the operation piece 13d protruding from the opposite side end face are integrally formed.

On the other hand, on the upper side of the mounting wall 5, FIG.
As shown in (b), a substantially rectangular opening 14 into which the engaging piece 13b of the partition 13 is inserted is formed. In addition, the side wall facing the mounting wall 5 of the case 1 has a partition 13 as described later.
There is provided a storage section 9 (see FIG. 7) in which the can be moved back and forth. Thus, by inserting the engaging piece 13 b into the opening 14 and engaging with it, the partition 13 is slidably movable along the side surface of the mounting wall 5 and is able to advance and retreat into the storage portion 9 to the case 1. Be attached. An operation recess 16 is formed on the side of the case 1 facing the mounting wall 5 adjacent to the storage portion 9. The tip of a flathead screwdriver is inserted into the operation recess 16 to store the housing 1. The tip of a flathead screwdriver is brought into contact with the operation piece 13d of the partition 13 housed in the section 9 so that the partition 13 can be pulled out of the storage section 9.

Here, in a state where the partition 13 is stored in the storage portion 9, as shown in FIG.
When the projected images in the axial directions of a and 4a do not overlap with any of the power supply side terminals 3 and 4, and the partition 13 is pulled out of the storage portion 9, as shown in FIG. , 4 a overlap with a part of the lower power supply terminal 4, and the lower end of the partition wall 13 abuts against the mounting wall 5 so that the side of the terminal plate 3 b of the upper power supply terminal 3 and the lower power supply The side terminals 4 are isolated. 8 and 9, when the partition 13 is pulled out of the storage section 9, the locking recess 13c of the partition 13 is engaged with the locking projection 15 protruding from the side surface of the mounting wall 5. The partition 13 is locked and held in the above state.

Thus, according to the present embodiment, each of the power supply terminals 3 and 4 is provided in a state where the partition 13 is completely stored in the storage portion 9.
Can be connected by fitting the conductive bar from the upper part of the case 1, thereby facilitating the replacement work of the circuit breaker in the distribution board. In addition, if the partition 13 is pulled out from the storage section 9 after the conductive bars are connected to the power supply terminals 3 and 4,
As shown in FIGS. 8 and 9, the two power supply terminals 3 and 4 are separated by the partition 13, so that when the terminal screws 4 a of the lower power supply terminal 4 are tightened again, the conductive portions on the driver side surfaces are in the upper position. Terminal screw 3a of power supply terminal 3 or terminal plate 3
Thus, it is possible to prevent the occurrence of a short circuit accident in the energized state without contacting the b. Further, in the present embodiment, since the partition 13 is slidably attached to the case 1, the partition 13 is compared with a configuration in which the partition member 11 is detachably attached to the case 1 as in the second embodiment. There is an advantage that there is no risk of loss.

(Embodiment 4) FIG. 1 shows Embodiment 4 of the present invention.
This will be described with reference to FIGS. However, since the basic configuration of the present embodiment is the same as that of the first embodiment, common portions are denoted by the same reference numerals, and description thereof will be omitted. Only the configuration that is a feature of the present embodiment will be described.

That is, in the present embodiment, each of the power supply terminals 3 and 4 is attached to the end of the case 1 where the power supply terminals 3 and 4 are provided.
The position where the projected images of the terminal screws 3a and 4a in the axial direction do not overlap with any of the power supply terminals 3 and 4 (see FIG. 10) is overlapped with a part of the lower power supply terminal 4 and placed. A partition wall 17 that is rotatable between a side surface of the terminal plate 3b of the upper power supply terminal 3 and a position (see FIG. 12) that partially separates the lower power supply terminal 4 from the side surface of the terminal plate 3b. There is a feature in that it is provided.

As shown in FIG. 12 and FIG.
Is a substantially trapezoidal main portion 17a made of an insulating material such as a synthetic resin,
Shaft portions 17b projecting from upper and lower surfaces on one end side of the main portion 17a
A projection 17c protruding from a lower portion of the side surface of the main portion 17a opposite to the mounting wall 5, and a locking projection 17d protruding from the lower surface of the projection 17c are integrally formed.

On the other hand, as shown in FIG. 12, a pivot portion 18 for pivotally supporting both shaft portions 17b of the partition wall 17 is provided at the upper portion of the side surface facing the mounting wall 5 of the case 1. By pivotally supporting the shaft portion 17b, the partition wall 17 is rotatably mounted on the case 1.

Here, in a state in which the partition wall 17 is opened, FIG.
0 and the terminal screws 3a, 4 of the partition 17 as shown in FIG.
In the state where the projected image in the axial direction a does not overlap any of the power supply terminals 3 and 4 and the partition wall 17 is closed, FIG.
And terminal screws 3a and 4a of the partition 17 as shown in FIG.
And the lower end of the partition wall 17 abuts against the mounting wall 5 so that the side surface of the terminal plate 3b of the upper power supply terminal 3 and the lower power supply terminal 4 will be isolated. When the partition 17 is closed, the projection 17c of the partition 17 is inserted into the locking hole 19 formed in the side surface of the mounting wall 5, and the locking projection 17d on the lower surface of the projection 17c is locked. The partition wall 17 is locked in the hole 19 and is held in a closed state.

According to the present embodiment, the conductive bar is connected to each of the power supply terminals 3 and 4 with the partition 17 opened.
Can be connected so as to be fitted from above, thereby facilitating replacement work of the circuit breaker in the distribution board.
If the partition 17 is closed after the conductive bars are connected to the power terminals 3 and 4, the two power terminals 3 and 4 are isolated by the partition 17 as shown in FIGS.
When the terminal screw 4a of the lower power supply terminal 4 is retightened, the conductive portion on the side of the driver does not contact the terminal screw 3a of the upper power supply terminal 3 or the terminal plate 3b. Occurrence can be prevented. Further, in the present embodiment, since the partition wall 17 is pivotally attached to the case 1 so as to be rotatable, the partition wall 17 is compared with a configuration in which the partition member 11 is detachably attached to the case 1 as in the second embodiment. There is an advantage that there is no risk of loss.

(Embodiment 5) FIG. 1 shows Embodiment 5 of the present invention.
This will be described with reference to FIGS. However, since the basic configuration of the present embodiment is the same as that of the first embodiment, common portions are denoted by the same reference numerals, and description thereof will be omitted. Only the configuration that is a feature of the present embodiment will be described.

That is, in this embodiment, the power supply terminals 3 and 4 are attached to the end of the case 1 where the power supply terminals 3 and 4 are provided.
4 is provided with a terminal cover 20 for closing the upper part of the power supply side terminal 3 and the lower side power supply side terminal 4.
20c and terminal screws 3 of the power supply terminals 3 and 4 with the terminal cover 20 attached to the case 1.
It is characterized in that a pair of driver insertion holes 20d facing a and 4a are provided.

As shown in FIG. 14, the terminal cover 20 is composed of a main piece 20a slidably mounted on the case 1 with an insulating material such as a synthetic resin, and an upper piece 2 for covering the upper portions of the power supply terminals 3 and 4.
0b and the partition wall portion 20c are integrally formed, and a pair of driver insertion holes 20d are formed in the upper piece 20b. The main piece 20a is wider than the upper piece 20b,
0a and the upper piece 20b are integrally formed substantially in the shape of a mountain, and the partition 20
c is erected.

On the other hand, insertion grooves 21 into which both ends of the main piece 20a of the terminal cover 20 are inserted are formed at the boundary between the side surface facing the mounting wall 5 of the case 1 and both side walls 2a and 2b. By inserting both ends of the main piece 20a into the respective insertion grooves 21, the terminal cover 20 can be removably inserted into the case 1 as shown in FIGS. Here, as shown in FIG. 14, projections 20e are projected from both end surfaces of the upper piece 20b so that the terminal cover 20
When the terminal cover 20 is inserted into the terminal cover 20, the protrusion 20 e is locked in a locking hole 2 c provided in the inner side surface of the both side walls 2 a and 2 b.
Can be held while being inserted into the case 1. In a state where the terminal cover 20 is inserted into the case 1, a pair of driver insertion holes 20d provided in the upper piece 20b of the terminal cover 20 as shown in FIGS. It faces the screws 3a and 4a.

Thus, according to the present embodiment, the conductive bar can be connected to each of the power supply terminals 3 and 4 by fitting the conductive bar from above the case 1 with the terminal cover 20 removed. The replacement work of the circuit breaker in the inside becomes easy. If the terminal cover 20 is attached to the case 1 after the conductive bars are connected to the power supply terminals 3 and 4, FIG.
Also, as shown in FIG. 18, the two power supply terminals 3 and 4 are separated by the partition wall portion 20c of the terminal cover 20. Therefore, when the terminal screws 4a of the lower power supply terminal 4 are further tightened, they are inserted into the driver insertion holes 20d. The terminal screw 3a or the terminal plate 3b of the power supply terminal 3 in the upper stage has the side conductive portion of the inserted driver.
, And it is possible to prevent the occurrence of a short circuit accident in the energized state.

(Embodiment 6) FIG. 1 shows Embodiment 6 of the present invention.
This will be described with reference to FIGS. However, since the basic configuration of the present embodiment is the same as that of the first embodiment, common portions are denoted by the same reference numerals, and description thereof will be omitted. Only the configuration that is a feature of the present embodiment will be described.

That is, in this embodiment, the power supply terminals 3 and 4 are attached to the end of the case 1 where the power supply terminals 3 and 4 are provided.
4 is provided with a terminal cover 22 for closing the upper part of the power supply side terminal 3 and the side of the lower power supply side terminal 4.
This is characterized in that a partition 22d for isolating the power supply terminals and a cover 22b that can be deformed are provided at positions where the upper portions of the power supply terminals 3 and 4 are closed and positions where they are not closed (opened).

As shown in FIG. 19, the terminal cover 22 is connected to a main portion 22a slidably mounted on the case 1 with an insulating material such as a synthetic resin, and is connected to one edge of the main portion 22a through a thin portion 22c. A cover portion 22b that opens and closes the upper portions of the power supply terminals 3 and 4 is opened and closed, and a plate-shaped partition portion 22d that stands upright on a substantially center line of the main portion 22a is integrally formed. The main part 22a is formed wider than the cover part 22b. On the other hand, insertion grooves 23 into which both ends of the main portion 22a of the terminal cover 22 are inserted are formed at the boundary between the side surface facing the mounting wall 5 of the case 1 and the side walls 2a and 2b. By inserting both ends of the portion 22a into the respective insertion grooves 23, the terminal cover 22 can be removably inserted into the case 1 as shown in FIGS. Here, the cover portion 22b is connected to the main portion 22a via the thin portion 22c.
Is rotatably supported at one end thereof, and the cover portion 22b can be opened and closed by bending the thin portion 22c. Also, as shown in FIG. 19, protrusions 22e are protruded from both end surfaces of the front end of the cover portion 22b.
When the cover 22b is closed in a state in which the cover 22b is inserted into the case 1, the protrusion 22e is locked in the locking hole 2d provided on the inner side surface of the both side walls 2a, 2b, so that the cover 22b of the terminal cover 22 is fixed. The power supply terminals 3 and 4 can be held at a position that closes the upper part. Note that the terminal cover 22 is attached to the case 1
19 to 22, the lower end of the partition wall 22d of the terminal cover 22 abuts on the upper side of the mounting wall 5, and the side of the upper power supply terminal 3 and the lower power supply as shown in FIGS. The side terminals 4 are isolated from each other.

According to the present embodiment, the conductive bar can be connected to each of the power supply terminals 3 and 4 by inserting the conductive bar from above the case 1 with the terminal cover 22 removed. The replacement work of the circuit breaker in the inside becomes easy. If the terminal cover 22 is inserted into the case 1 after the conductive bars are connected to the power supply terminals 3 and 4, the two power supply terminals 3 and 4 are isolated by the partition 22 d of the terminal cover 22. As shown in FIGS. 19 and 20, the cover portion 22b is opened and the terminal screws 4 of the lower power supply side terminal 4 are opened.
When retightening a, the side conductive portion of the driver does not come into contact with the terminal screw 3a or the terminal plate 3b of the upper power supply terminal 3, so that it is possible to prevent the occurrence of a short circuit accident in an energized state. Normally, the upper portions of the power supply terminals 3 and 4 can be closed by closing the cover portion 22b.

(Embodiment 7) Embodiment 7 of the present invention is shown in FIG.
This will be described with reference to FIGS. However, since the basic configuration of the present embodiment is the same as that of the first embodiment, common portions are denoted by the same reference numerals, and description thereof will be omitted. Only the configuration that is a feature of the present embodiment will be described.

That is, in the present embodiment, the connection conversion adapter 30 which is connected to the strip-shaped conductive bar by insertion and electrically connects the respective power supply terminals 3 and 4 to the conductive bar is provided.
A terminal cover 24 which is detachably attached to the connection conversion adapter 30 and covers an upper portion of each of the power supply terminals 3 and 4 is provided. This terminal cover is provided with a side surface of the upper power supply terminal 3 and a lower power supply terminal 4. 24c for isolating the terminal cover and the terminal cover 24
Is provided with a pair of driver insertion holes 24d facing the terminal screws 3a and 4a of the power supply terminals 3 and 4 in a state in which the power supply side terminals 3 and 4 are attached to the connection conversion adapter 30.

For example, in a single-phase three-wire distribution board, three conductive bars (neutral pole bars and a pair of voltage pole bars) made of a strip-shaped rectangular conductor are connected to the main breaker, and To the power supply side terminal of the branch breaker composed of the circuit breaker according to (1), and is connected to any two conductive bars via a branch bar composed of a strip-shaped rectangular conductor. However,
In such a configuration, the circuit breaker must be connected to each conductive bar using a branch bar, and the connection work is troublesome.

Therefore, the present applicant has already proposed a connection conversion adapter 30 having one end connected to the power supply side terminal of the circuit breaker and the other end connected to the conductive bar by insertion.

The connection conversion adapter 30 includes a housing 31 formed of an insulating material such as a synthetic resin, and conversion terminal members 32 and 33 bent by a conductive material. As shown in FIGS. 23 and 24, the housing 31 has three terminals through which a neutral bar and a voltage bar, which are conductive bars, penetrate on the side surface opposite to the direction in which the housing 31 is attached to the case 1 of the circuit breaker. Cut grooves 34, 35, and 36 are formed, and when electrically connecting conductive bars (neutral pole bar and voltage pole bar) to a common terminal receiving blade 37 and a selection terminal receiving blade 38, which will be described later, a branch bar is formed. You can connect without bothering.

A substantially U-shaped inner wall (not shown) is formed in the housing 31 so that the conversion terminal members 32 and 33 are insulated to form three storage spaces. Has become. Of these three storage spaces, the upper stage is a common terminal storage part for storing the common terminal receiving blade 37,
The middle stage and the lower stage are selection terminal storage sections for storing the selection terminal receiving blade 38. For example, this embodiment is a circuit breaker for 100 V, and the selection terminal receiving blade 38 is disposed in the middle selection terminal storage section. The case 1 of the housing 31
The ends attached to the power supply terminals 3 and 4 of the case 1
Is formed into a shape that engages with the concave and convex with respect to the end on the side where is disposed. The housing 31 is located between the terminal plates 3b, 4b and the terminal screws 3a, 4a of the power supply terminals 3, 4.
The connection conversion adapter 30 is connected to the power supply terminals 3 and 4 by tightening the terminal screws 3a and 4a in a state where the conversion terminal members 32 and 33 penetrating from the power supply terminals 32 and 33 are inserted.

The conversion terminal members 32 and 33 are formed by bending a conductive material as described above, and have bifurcated connection portions 32a and 33a connected to the power supply terminals 3 and 4, respectively. . A selection terminal receiving blade 38 for connecting a neutral pole bar to one conversion terminal member 32 and another conversion terminal member 33.
Is formed with a common terminal receiving blade 37 for connecting one of the voltage pole bars, respectively, and only by inserting the neutral pole bar and one of the voltage pole bars into the selection terminal receiving blade 38 and the common terminal receiving blade 37, respectively. The conductive bar can be connected, and the workability of connecting the conductive bar can be improved.

On the other hand, as shown in FIG.
4 is a connection conversion adapter 3 made of an insulating material such as a synthetic resin.
And a cover 24b that covers the upper portions of the power supply terminals 3 and 4 in the mounted state.
And a flat plate-like partition wall portion 24c vertically provided from a lower surface of the cover portion 24b, and are integrally formed.
Is provided with a pair of driver insertion holes 24d facing the power supply terminals 3 and 4 in the mounted state. FIG. 2 shows the mounting portion 24a.
As shown in FIG. 6, the cross-sectional shape is substantially U-shaped.

On the other hand, the housing 31 of the connection conversion adapter 30 has a projecting base 31a projecting from the upper surface of the end connected to the case 1, and as shown in FIG. The terminal cover 24 is detachably attached to the connection conversion adapter 30 so that the protruding base 31a is inserted into the terminal cover 24a. Here, in a state where the terminal cover 24 is attached to the connection conversion adapter 30, FIGS.
As shown in FIG. 7, the lower end of the partition wall portion 24c of the terminal cover 24 abuts on the upper side surface of the mounting wall 5, and separates the side surface of the upper power supply terminal 3 from the lower power supply terminal 4. At the same time, the upper portions of the power supply terminals 3 and 4 are closed by the cover portion 24b, and a pair of driver insertion holes 24d face the power supply terminals 3 and 4, respectively.

According to the present embodiment, as shown in FIG. 25, the connection portions 32a and 33a of the connection conversion adapter 30 are connected to the respective power supply terminals 3 with the terminal cover 24 removed.
4 to facilitate the work of replacing the circuit breaker in the distribution board. In addition, connection conversion adapter 3
When the terminal cover 24 is attached to the connection conversion adapter 30 after inserting the common terminal receiving blade 37 and the selection terminal receiving blade 38 into the conductive bar, respectively, the two power supply terminals 3 and 4 become the partition walls of the terminal cover 24. When the driver is inserted through the driver insertion hole 24d and the terminal screw 4a of the lower power supply terminal 4 is further tightened, the side conductive portion of the driver is connected to the terminal screw 3a of the upper power supply terminal 3 or Without contacting the terminal plate 3b, it is possible to prevent the occurrence of a short circuit accident in the energized state.

[0055]

According to the first aspect of the present invention, two screw-type terminals are provided between both side walls at the end of the case so as to be vertically different from each other in the direction between the side walls, and extend upward from the side surface of the lower terminal. In the circuit breaker in which the upper terminal is disposed on the upper surface of the mounting wall that protrudes, between the mounting wall and the end surface of the lower terminal, the upper side terminal extends upward and extends between the side surface of the upper terminal and the lower terminal. The terminal connection work is easy because the thin plate member that separates the terminal is attached, for example, a strip-shaped conductive bar can be fitted from the upper direction and connected with the terminal screw, and the circuit in the distribution board can be cut off. The replacement work of the container becomes easy. In addition, since each terminal is isolated by the thin plate member, the conductive portion on the side surface of the driver does not come into contact with the upper terminal when the lower terminal is retightened, so that a short circuit accident in an energized state can be prevented.

According to a second aspect of the present invention, two screw-type terminals are provided between both side walls at the end of the case so as to be vertically different in the direction between the side walls, and extend upward from the side surfaces of the lower terminal. In the circuit breaker in which the upper terminal is disposed on the upper surface of the mounting wall, a partition member that separates the side surface of the upper terminal from the lower terminal is detachably attached to the side surface of the mounting wall, The connection work of the terminals is easy, for example, the partition member can be removed, a strip-shaped conductive bar can be fitted to each terminal from above, and connected with the terminal screw, and the circuit breaker can be replaced in the distribution board. Work becomes easy. Also, after connecting the conductive bar, a partition member can be attached to isolate each terminal, and when the lower terminal is retightened, the conductive portion on the side of the driver does not contact the upper terminal, so that the terminal can be energized. Short circuit accidents can be prevented.

According to a third aspect of the present invention, two screw-type terminals are provided between both side walls at the end of the case so as to be vertically different in the direction between the both side walls, and extend upward from the side surfaces of the lower terminal. In the circuit breaker in which the upper terminal is arranged on the upper surface of the mounting wall, a position where the projected image of the terminal in the terminal screw axis direction does not overlap with any terminal at the end of the case,
The projection image overlaps a part of the lower terminal and a partition wall is provided that is movable between a side surface of the upper terminal and a position that separates the lower terminal from a side partly abutting on the mounting wall. Therefore, the connection work of the terminals is easy. For example, if the partition wall is moved to a position where the projected image of each terminal in the terminal screw axis direction does not overlap with any terminal, the strip-shaped conductive bar is fitted to each terminal from above. Can be connected with terminal screws, making it easy to replace the circuit breaker in the distribution board. Also, after connecting the conductive bar, the projected image overlaps a part of the lower terminal, and the partition moves to a position where a part of the partition comes into contact with the mounting wall to separate the side surface of the upper terminal from the lower terminal. If you do
Each terminal can be isolated by the partition, and the conductive portion on the side surface of the driver does not come into contact with the upper terminal when the lower terminal is retightened, so that a short circuit accident in the energized state can be prevented.

According to the fourth aspect of the present invention, since the locking portion for locking with the locked portion provided on the partition wall in the state of contact with the partition wall is provided on the mounting wall, the position for isolating each terminal is provided. Thus, the partition can be stably held.

According to a fifth aspect of the present invention, two screw-type terminals are provided between both side walls at the end of the case so as to be vertically different in the direction between the side walls, and extend upward from the side surfaces of the lower terminal. In a circuit breaker in which an upper terminal is disposed on an upper surface of a mounting wall and a terminal cover for closing an upper portion of each terminal is mounted on an upper surface of an end of the case, a side surface of the upper terminal is separated from a lower terminal. The terminal cover is provided with a partition wall portion to be formed and a driver insertion hole facing each terminal in a state where the terminal cover is attached to an end of the case, so that connection work of the terminals is easy. In this state, a strip-shaped conductive bar can be fitted to each terminal from above and connected with a terminal screw, which facilitates the work of replacing the circuit breaker in the distribution board. When the terminal cover is attached, each terminal is isolated by the partition of the terminal cover, and when the driver is inserted through the driver insertion hole and the lower terminal is tightened, the conductive part on the side of the driver contacts the upper terminal. Therefore, it is possible to prevent a short circuit accident in an energized state.

According to a sixth aspect of the present invention, two screw terminals are provided between both side walls at the end of the case so as to be vertically different in the direction between the two side walls, and extend upward from the side surfaces of the lower terminal. In a circuit breaker in which an upper terminal is disposed on an upper surface of a mounting wall and a terminal cover for closing an upper portion of each terminal is mounted on an upper surface of an end portion of the case, the terminal cover is provided with a side surface of the upper terminal and a lower terminal. And a cover portion that is connected to the partition portion and that can be deformed between a position where each terminal is closed and a position where each terminal is not closed. For example, with a terminal cover removed, a strip-shaped conductive bar can be fitted to each terminal from above and connected with terminal screws, which facilitates replacement work of a circuit breaker in a distribution board. . Also, if the terminal cover is attached, each terminal is isolated by the partition of the terminal cover, the cover is deformed to a position where each terminal is not blocked, the driver is inserted, and the lower terminal is retightened in this state Sometimes, the conductive portion on the side surface of the driver does not come into contact with the upper terminal, thereby preventing a short circuit accident in the energized state.

According to a seventh aspect of the present invention, two screw-type terminals are provided between both side walls at the end of the case so as to be vertically different in the direction between the side walls, and extend upward from the side surfaces of the lower terminals. An upper terminal is disposed on the upper surface of the mounting wall, and a connection conversion adapter is provided which is connected to the strip-shaped conductive bar by insertion and electrically connects the respective terminals to the conductive bar. In a circuit breaker for mounting a terminal cover for closing an upper part of each terminal between the connection conversion adapters,
The terminal cover is detachably disposed at an end of the case or the connection conversion adapter, and a partition part for separating an upper terminal side surface from a lower terminal, and the terminal cover is connected to an end of the case or a connection conversion adapter. It is equipped with a driver insertion hole facing each terminal when attached to the terminal, so that the connection conversion adapter can be fitted to each terminal from the upper direction with the terminal cover removed, and connected with terminal screws. Becomes easier. When the terminal cover is attached, each terminal is isolated by the partition of the terminal cover, and when the driver is inserted through the driver insertion hole and the lower terminal is tightened, the conductive part on the side of the driver contacts the upper terminal. Therefore, it is possible to prevent a short circuit accident in an energized state.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment.

FIG. 2 is a side view as viewed from a power supply side terminal of the power supply system.

FIG. 3 is an exploded perspective view of the second embodiment.

FIG. 4 is a top view partially omitted from the above.

FIG. 5 is a side view as viewed from a power supply side terminal of the power supply system.

FIGS. 6A and 6B show a third embodiment, in which FIG. 6A is a partially omitted top view showing a state in which partitions are accommodated, and FIG. 6B is a partially omitted side view showing a state in which partitions are accommodated.

FIG. 7 is a side view of a state where the partition wall is housed as viewed from the power supply side terminal of the power supply system.

8A and 8B show the same as the above, in which FIG. 8A is a top view partially showing a state where a partition is drawn out, and FIG. 8B is a side view partially showing a state where a partition is drawn out.

FIG. 9 is a side view of a state where a partition wall is pulled out as viewed from the power supply side terminal of the power supply system.

10A and 10B show a fourth embodiment, in which FIG. 10A is a top view in which a partition is opened and a part is omitted, and FIG. 10B is a side view in which a partition is opened and part is omitted.

FIG. 11 is a side view of a state where a partition wall is opened as viewed from the power supply side terminal of the power supply system.

12A and 12B show the same as the above, in which FIG. 12A is a top view in which a partition is closed and partly omitted, and FIG. 12B is a side view in which a partition is closed and partly omitted.

FIG. 13 is a side view showing a state where a partition wall is closed as viewed from the power supply side terminal of the power supply system.

FIG. 14 is an exploded perspective view of the fifth embodiment.

FIG. 15 is a side view of the power supply terminal with the terminal cover removed from the power supply terminal.

16 (a) and 16 (b) show the same as above, where (a) is a partially omitted top view with the terminal cover removed and (b) is a partially omitted side view with the terminal cover removed.

FIG. 17 is a side view of the power supply side terminal in a state where the terminal cover is attached.

FIGS. 18A and 18B show the same as above, wherein FIG. 18A is a partially omitted top view with a terminal cover attached, and FIG. 18B is a partially omitted side view with a terminal cover attached.

FIGS. 19A and 19B show the sixth embodiment, in which FIG. 19A is a partially omitted top view of the terminal cover with the partition part opened, and FIG. 19B is a partially omitted side view of the terminal cover with the partition part opened. FIG.

FIG. 20 is a side view showing the above and viewed from the power supply side terminal in a state where a partition wall portion of the terminal cover is opened.

FIGS. 21A and 21B show the same as the above, where FIG. 21A is a top view of the terminal cover with the partition part closed and partly omitted, and FIG. 21B is a side view of the terminal cover with the partition part closed and partly omitted. is there.

FIG. 22 is a side view showing the above and viewed from the power supply side terminal in a state in which a partition wall portion of the terminal cover is closed.

FIG. 23 is an exploded perspective view of the seventh embodiment.

FIG. 24 is a side view of the connection conversion adapter in a state where the terminal cover is attached in the same.

FIG. 25 is a top view of the same as above, with a terminal cover removed and partly omitted.

FIG. 26 is a side view as seen from the power-supply-side terminal, which is partially broken away.

FIG. 27 is a partially broken side view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case 2a, 2b Side wall 3 Upper-stage power supply terminal 4 Lower-stage power supply terminal 5 Mounting wall 10 Thin plate member

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hideki Kondo 1048 Odakadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works, Ltd.

Claims (7)

[Claims] An upper surface of a mounting wall extending upward and downward from a side surface of a lower terminal while two screw-type terminals are provided between both side walls at an end portion of the case so as to be vertically different in a direction between the two side walls. In the circuit breaker in which the upper terminal is disposed, a thin plate member extending upward and separating the side surface of the upper terminal and the lower terminal is provided between the mounting wall and the end surface of the lower terminal. A circuit breaker characterized by being attached. 2. An upper surface of a mounting wall extending upward and downward from a side surface of a lower terminal while two screw terminals are provided between upper and lower walls of the end portion of the case between upper and lower steps in a direction between the two side walls. A circuit breaker in which an upper terminal is disposed on a side wall of the mounting wall, wherein a partition member for separating a side surface of the upper terminal from a lower terminal is detachably attached to a side surface of the mounting wall. vessel. 3. An upper surface of a mounting wall extending upward and downward from a side surface of a lower terminal, wherein two screw terminals are provided between upper and lower walls of the case at an end thereof. In the circuit breaker in which the upper terminal is disposed at a position where the projected image of the terminal in the screw axis direction of each terminal does not overlap with any terminal at the end of the case, A circuit breaker having a partition that overlaps a portion and is movable between a side surface of the upper terminal and a position separating the lower terminal by partially abutting the mounting wall. 4. The circuit breaker according to claim 3, wherein a locking portion for locking with a locked portion provided on the partition wall while being in contact with the partition wall is provided on the mounting wall. . 5. An upper surface of a mounting wall extending upwardly from a side surface of a lower terminal while two screw-type terminals are provided between both side walls at an end of the case so as to be vertically different from each other in a direction between the side walls. Arrange the upper terminal, in the circuit breaker to attach a terminal cover that covers the upper part of each terminal on the upper surface of the end of the case, a partition part that separates the side surface of the upper terminal and the lower terminal, A circuit breaker, wherein a driver insertion hole facing each terminal is provided in the terminal cover with the terminal cover attached to an end of a case. 6. An upper surface of a mounting wall extending upward and downward from a side surface of a lower terminal while two screw terminals are provided between upper and lower walls at both ends of the case. In the circuit breaker in which an upper terminal is disposed and a terminal cover for closing an upper part of each terminal is mounted on an upper surface of an end of the case, the terminal cover separates a side surface of the upper terminal from a lower terminal. A circuit breaker comprising: a partition portion to be formed; and a cover portion that is connected to the partition portion and that can be deformed between a position where each terminal is closed and a position where the terminal is not closed. 7. An upper surface of a mounting wall extending upward and downward from a side surface of a lower terminal while two screw terminals are provided between upper and lower walls of the case at an end portion thereof. A connection conversion adapter connected by insertion to a strip-shaped conductive bar for electrically connecting the terminals to the conductive bar, between the case and the connection conversion adapter. In a circuit breaker for mounting a terminal cover that covers the upper part of each terminal, the terminal cover is detachably disposed on the end of the case or the connection conversion adapter, and the upper terminal side surface and the lower terminal are connected to each other. A circuit breaker, comprising: a partition wall portion to be isolated; and a driver insertion hole facing each terminal when the terminal cover is attached to an end of a case or a connection conversion adapter.