阅读说明：本技术 抽屉式断路器 (Drawer type circuit breaker ) 是由 仓田康平 于 2017-05-16 设计创作，主要内容包括：本发明的抽屉式断路器具备能够以各相为单位进行拆装地配置于抽屉框的端子单元,该端子单元具有：绝缘基座；抽屉框侧导体,其被插入至绝缘基座,可拆卸地被固定；连接器,其与该抽屉框侧导体的从绝缘基座凸出的一端卡合,并且可插拔地与所述断路器侧导体连接；以及端子,其处于抽屉框侧导体的另一端,使得组装变容易并且能够针对各相单独地进行追加、拆卸。(The withdrawable circuit-breaker of the present invention includes a terminal unit detachably disposed in a drawer frame in units of phases, the terminal unit including: an insulating base; a drawer frame side conductor inserted into the insulating base and detachably fixed; a connector which is engaged with one end of the drawer frame side conductor protruding from the insulating base and is connected to the circuit breaker side conductor in a pluggable manner; and a terminal at the other end of the drawer frame side conductor, so that assembly is easy and addition and removal can be individually performed for each phase.)

1. A withdrawable circuit-breaker is provided with:

a drawer frame;

a circuit breaker main body which moves through a guide and can be mounted on the drawer frame;

a circuit breaker side conductor provided to protrude from the circuit breaker main body; and

a terminal unit which is detachably disposed on the drawer frame in units of phases,

the terminal unit has:

an insulating base;

a drawer frame side conductor inserted into the insulating base, detachably fixed;

a connector which is engaged with one end of the drawer frame side conductor protruding from the insulating base and is connected to the circuit breaker side conductor in a pluggable manner; and

and a terminal at the other end of the drawer frame side conductor.

2. The withdrawable circuit-breaker according to claim 1,

and the front end of one end of the drawer frame conductor, which is clamped with the insulating base, is Y-shaped.

3. The withdrawable circuit-breaker according to claim 1 or 2,

the 2 drawer frame conductors of the power source side terminal and the load side terminal are inserted into and fixed to the insulating base, and an air passage is formed in the insulating base between the power source side terminal and the load side terminal.

4. The withdrawable circuit-breaker according to claim 1,

the drawer frame side conductor is composed of a terminal conductor having a terminal formed thereon and a relay terminal conductor having a Y-shaped distal end portion, the relay terminal conductor is screwed to the insulating base at a bottom portion thereof, and the terminal conductor is screwed to the relay terminal conductor.

5. The withdrawable circuit-breaker according to claim 4,

the bottom of the terminal conductor screwed to the relay terminal conductor is square-shaped, and the terminal includes a line connecting midpoints of opposite sides of the square shape and is formed perpendicular to the bottom.

Technical Field

The present invention relates to a withdrawable circuit breaker including a circuit breaker and a terminal device.

Background

A terminal device of a conventional withdrawable circuit breaker is fixed in a state where a side plate (left and right) and an angle iron (up and down) are combined with each other by sandwiching a terminal and a connector of each phase from left and right through an insulating base (for example, refer to patent document 1). The side plate and the angle iron constitute a drawer frame into which the circuit breaker is drawn out or inserted.

In addition, an insulating base mounted to ensure insulation between the phase terminals may be formed in a box shape. (see, for example, patent document 2)

Patent document 1: japanese laid-open patent publication No. 2009-55732

Patent document 2: japanese laid-open patent publication No. 11-250776

Disclosure of Invention

The conventional terminal device of the withdrawable circuit breaker is configured as described above, and has a problem that it is necessary to hold the terminal device until the right and left insulating bases are combined and the side plate and the angle iron are combined at the time of assembly. In addition, when maintenance or replacement of the connector, the terminal, and the insulating base is performed, the drawer frame needs to be disassembled. Further, when the product specifications are different, there is a problem that a dedicated insulating base is required.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a terminal device of a withdrawable circuit-breaker, which facilitates assembly of the terminal device and can be individually added to and removed from each phase.

The drawer breaker according to the present invention includes: a drawer frame; a circuit breaker main body which moves through a guide and can be mounted on the drawer frame; a circuit breaker side conductor provided to protrude from the circuit breaker main body; and a terminal unit that is detachably disposed on the drawer frame in units of phases, the terminal unit including: an insulating base; a drawer frame side conductor inserted into the insulating base and detachably fixed; a connector which is engaged with one end of the drawer frame side conductor protruding from the insulating base and is connected with the circuit breaker side conductor in a pluggable manner; and a terminal at the other end of the drawer frame side conductor.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the withdrawable circuit-breaker of the present invention, the assembly, maintenance, and phase number change of the terminal unit can be easily performed.

Drawings

Fig. 1 is a perspective view of a drawer type circuit breaker according to embodiment 1 of the present invention in a drawn-out state.

Fig. 2 is a perspective view of the withdrawable circuit breaker according to embodiment 1 of the present invention in an inserted state.

Fig. 3 is a rear view showing the attachment and detachment of the terminal unit of the withdrawable circuit breaker shown in fig. 1.

Fig. 4 is an exploded perspective view of a terminal unit of the withdrawable circuit breaker according to embodiment 1 of the present invention.

Fig. 5 is a sectional view of the upper portion of the terminal portion in the state of fig. 2.

Fig. 6 is a sectional view of the upper portion of the terminal portion in the state of fig. 1.

Fig. 7 is an enlarged view of the terminal unit of fig. 6.

Fig. 8 is an explanatory diagram of the extension of the terminal unit according to embodiment 1 of the present invention.

Fig. 9 is an explanatory diagram for explaining an example of modification of the terminal conductor of the withdrawable circuit breaker according to embodiment 2 of the present invention.

Fig. 10 is an explanatory diagram for explaining another example of a modification of the terminal conductor of the withdrawable circuit breaker according to embodiment 2 of the present invention.

Detailed Description