阅读说明：本技术 拉出型断路器 (Pull-out type circuit breaker ) 是由 赤坂谦一 松田和久 于 2018-03-07 设计创作，主要内容包括：拉出型断路器具有端子装置和挡板装置。端子装置具有多个供多个拉出框侧导体插入的绝缘基座(21)。挡板装置具有多个固定挡板。多个绝缘基座(21)在与断路器主体被拉出的方向即第1方向正交的方向即第2方向上进行排列。多个绝缘基座(21)各自在第2方向相对的一对壁部(213、214)分别具有与固定挡板卡合的卡合部(213f、214f)。卡合部(213f、214f)各自具有：第1延伸部(213f1、214f1),其向第1方向延伸；以及第2延伸部(213f2、214f2),其从第1延伸部(213f1、214f1)的前端朝向第2方向延伸。一对壁部(213、214)中的一个壁部的第2延伸部(213f2)和另一个壁部的第2延伸部(214f2)向彼此分离的方向延伸。(The pull-out type circuit breaker has a terminal device and a shutter device. The terminal device has a plurality of insulating bases (21) into which a plurality of lead frame-side conductors are inserted. The baffle device has a plurality of fixed baffles. The plurality of insulating bases (21) are arranged in a 2 nd direction, which is a direction orthogonal to a 1 st direction, which is a direction in which the breaker body is pulled out. A pair of wall parts (213, 214) of each of the plurality of insulation bases (21) facing in the 2 nd direction have engaging parts (213f, 214f) that engage with the fixed baffle. The engagement sections (213f, 214f) each have: a 1 st extension (213f1, 214f1) extending in the 1 st direction; and a 2 nd extension (213f2, 214f2) extending from a front end of the 1 st extension (213f1, 214f1) toward the 2 nd direction. The 2 nd extending portion (213f2) of one wall portion and the 2 nd extending portion (214f2) of the other wall portion of the pair of wall portions (213, 214) extend in directions away from each other.)

1. A pull-out type circuit breaker, comprising:

pulling out the frame;

a terminal device having a plurality of terminal units arranged in the pull-out frame, the terminal units including a plurality of pull-out frame side conductors connected to a power supply side conductor and a load side conductor, and an insulating base into which the plurality of pull-out frame side conductors are inserted;

a circuit breaker main body which has a plurality of circuit breaker side conductors connected to the plurality of pull-out frame side conductors in a state of being housed in the pull-out frame, and which can be pulled out from the pull-out frame; and

a shutter device including a movable shutter and a plurality of fixed shutters, the plurality of fixed shutters having a plurality of openings into which the plurality of breaker-side conductors are inserted when the breaker main body is stored in the pull-out frame, the movable shutter blocking the plurality of openings when the breaker main body is pulled out from the pull-out frame,

the plurality of insulation bases are arranged in a 2 nd direction which is a direction orthogonal to a 1 st direction which is a direction in which the breaker main body is pulled out,

the plurality of insulating bases each have a pair of wall portions opposing in the 2 nd direction,

the pair of wall portions each have an engaging portion that engages with the fixed shutter,

each of the engaging portions has a 1 st extending portion extending in the 1 st direction and a 2 nd extending portion extending in the 2 nd direction from a tip of the 1 st extending portion,

the 2 nd extending portion of one of the wall portions and the 2 nd extending portion of the other of the wall portions extend in directions away from each other.

2. The pull-out type circuit breaker according to claim 1,

the plurality of fixed baffles comprise a 1 st fixed baffle and a 2 nd fixed baffle,

the 1 st fixing baffle plate is provided with a 1 st opening for inserting the 1 st extending part of the clamping part,

the 2 nd fixing baffle has:

a notch portion into which the 1 st extending portion of the engaging portion is inserted; and

and a shutter-side engaging portion that protrudes in a 3 rd direction orthogonal to the 1 st direction and the 2 nd direction, and engages with the 2 nd extending portion of the engaging portion in a state in which the 1 st opening of the 1 st fixed shutter is inserted into the 1 st extending portion.

3. The pull-out type circuit breaker according to claim 2,

the pair of wall portions each have a projection extending in the 1 st direction,

the 1 st fixing baffle has a 2 nd opening into which the projection of the insulating base is inserted,

the 2 nd fixed shutter abuts against the projection on a surface opposite to a surface facing the breaker main body.

4. The pull-out type circuit breaker according to claim 3,

the projections of 2 insulation bases adjacent to each other among the plurality of insulation bases are inserted into the 2 nd opening.

5. The pull-out type circuit breaker according to any one of claims 1 to 4,

the shutter device has a shutter drive unit that moves the movable shutter in linkage with the drawing of the breaker main body from the draw-out frame,

the barrier driving unit is disposed between the plurality of pull-out frame-side conductors inside one of the plurality of insulating bases.

6. The pull-out type circuit breaker according to claim 5,

the shutter drive unit includes:

a rod pre-tensioned in the 1 st direction; and

and a link lever that rotates in accordance with movement of the lever in a direction opposite to the 1 st direction, and that moves the movable shutter from a trip position in which the movable shutter blocks the plurality of openings to a release position in which the plurality of openings are exposed.

7. The pull-out type circuit breaker according to claim 6,

the barrier driving unit includes a unit base rotatably holding the link, into which the rod is inserted in accordance with movement of the rod in a direction opposite to the 1 st direction,

the unit base can hold the lever in a state where the movable fence is in the release position.

8. The pull-out type circuit breaker according to claim 7,

the lever has a projection projecting in a direction orthogonal to the 1 st direction,

the shutter drive unit includes:

a guide groove that guides the boss; and

and a recess portion which is continuous with the guide groove in a direction orthogonal to the 1 st direction and which locks the protrusion portion.

9. The pull-out type circuit breaker according to claim 8,

the recessed portion has an inclined portion that causes the protrusion to enter the guide groove as the lever moves in a direction opposite to the 1 st direction.

Technical Field

The present invention relates to a pull-out type circuit breaker in which a breaker main body is housed in a pull-out frame in which a terminal device is disposed so as to be able to be pulled out.

Background

Conventionally, a pull-out type circuit breaker having a shutter device is known. The pull-out type circuit breaker with a shutter device includes: pulling out the frame; a terminal device disposed on the pull-out frame; a breaker main body that can be pulled out from the pull-out frame; and a shutter device mounted to a front surface of the terminal device.

The terminal device has, for each phase: a plurality of pull-out frame side conductors connected to the power supply side conductor and the load side conductor; and an insulating base into which the plurality of pullout frame side conductors are inserted. The circuit breaker main body has a plurality of circuit breaker side conductors, and these circuit breaker side conductors are connected to the plurality of draw-out frame side conductors in a state of being housed in the draw-out frame. The shutter device has a function of covering the drawer frame side conductor when the breaker main body is pulled out from the drawer frame in order to prevent the drawer frame side conductor from being exposed when viewed from the breaker main body side.

For example, patent document 1 discloses a baffle device including: a fixed baffle having an opening into which a breaker-side conductor protruding from a breaker main body can be inserted; and a movable shutter that is moved by the drive mechanism to a position covering the opening of the fixed shutter when the breaker main body is pulled out. In this pull-out type circuit breaker, the insulating base provided for each phase is configured by combining bilaterally symmetrical half bodies, and the fixed barrier is easily attached to the insulating base by inserting the fixed barrier into the guide grooves provided in the 2 half bodies in a direction facing each other.

Patent document 1: japanese laid-open patent publication No. 6-22418

Disclosure of Invention

However, in the case where the insulating bases provided for the respective phases are integrally formed by molding, there is a problem that it is difficult to provide the insulating bases with guide grooves into which the fixed shutters can be inserted. Therefore, in the conventional pull-out type circuit breaker, the terminal unit may not be easily assembled or maintained.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a pull-out type circuit breaker in which a fixed breaker can be easily attached to an insulating base even when the insulating base is integrally formed.

In order to solve the above-described problems and achieve the object, a pull-out type circuit breaker according to the present invention includes a pull-out frame, a terminal device, a breaker main body, and a shutter device. The terminal device includes a plurality of terminal units arranged in the drawer frame, each terminal unit including a plurality of drawer frame side conductors connected to the power source side conductor and the load side conductor and an insulating base into which the plurality of drawer frame side conductors are inserted. The circuit breaker main body has a plurality of circuit breaker side conductors connected to the plurality of drawer frame side conductors in a state of being housed in the drawer frame, and can be drawn out from the drawer frame. The shutter device has a plurality of fixed shutters having a plurality of openings into which the plurality of breaker-side conductors are inserted when the breaker main body is stored into the pull-out frame, and a movable shutter that blocks the plurality of openings when the breaker main body is pulled out from the pull-out frame. The plurality of insulating bases are arranged in a 2 nd direction, which is a direction orthogonal to a 1 st direction, which is a direction in which the breaker main body is pulled out. Each of the plurality of insulating bases has a pair of wall portions opposing in the 2 nd direction. The pair of wall portions each have an engagement portion that engages with the fixed shutter. The engaging portions each have a 1 st extending portion extending in a 1 st direction and a 2 nd extending portion extending in a 2 nd direction from a tip of the 1 st extending portion. The 2 nd extending portion of one wall portion and the 2 nd extending portion of the other wall portion of the pair of wall portions extend in directions away from each other.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, even when the insulating base is integrally formed, the fixing stay can be easily attached to the insulating base.

Drawings

Fig. 1 is an external view of a pull-out type circuit breaker according to embodiment 1 of the present invention.

Fig. 2 is an external view showing a state in which the circuit breaker main body is pulled out from the pull-out frame in the pull-out type circuit breaker according to embodiment 1.

Fig. 3 is a rear view showing a state in which a plurality of terminal units constituting the terminal device according to embodiment 1 are disposed in a drawer frame.

Fig. 4 is an exploded perspective view of the terminal unit according to embodiment 1.

Fig. 5 is a plan view showing a configuration example of the drawer frame side conductor according to embodiment 1.

Fig. 6 is an external perspective view showing a state where the shutter device is attached to the terminal device according to embodiment 1.

Fig. 7 is an external perspective view showing a state in which the shutter device is attached to the terminal device according to embodiment 1.

Fig. 8 is a diagram showing a configuration example of the movable flapper according to embodiment 1.

Fig. 9 is an external perspective view showing an example of the shutter drive unit according to embodiment 1.

Fig. 10 is an exploded perspective view of the shutter drive unit according to embodiment 1.

Fig. 11 is a bottom view showing another example of the flapper driving unit according to embodiment 1.

Fig. 12 is an external oblique view of a lever of the barrier driving unit shown in fig. 11.

Fig. 13 is a plan view of the barrier drive unit in a state where a rod and a link are attached to the unit base shown in fig. 11.

Fig. 14 is a plan view of the barrier drive unit in a state where a rod and a link are attached to the unit base shown in fig. 11.

Fig. 15 is a sectional view taken along the line XV-XV shown in fig. 11.

Fig. 16 is a partial sectional view of the withdrawable circuit breaker according to embodiment 1 in a state where the breaker main body is housed in the withdrawable frame.

Fig. 17 is a partial sectional view of the pull-out type circuit breaker according to embodiment 1 in a state where the breaker main body is pulled out from the inside of the pull-out frame.

Fig. 18 is a front view showing an example of an insulating base according to embodiment 1.

Fig. 19 is an external perspective view showing an example of an insulating base according to embodiment 1.

Fig. 20 is a diagram showing a configuration example of a 1 st fixed damper according to embodiment 1.

Fig. 21 is a diagram showing a configuration example of a 2 nd fixed damper according to embodiment 1.

Fig. 22 is a diagram showing a state in which the shutter drive unit is attached to the insulating base according to embodiment 1.

Fig. 23 is a diagram showing a state in which a movable baffle portion is attached to an insulating base according to embodiment 1.

Fig. 24 is a view showing a state in which the 1 st fixing fence is attached to the insulating base according to embodiment 1.

Fig. 25 is a view showing a state in which the 2 nd fixing fence is attached to the insulating base according to embodiment 1.

Fig. 26 is a front view of the terminal device to which the shutter device according to embodiment 1 is attached.

Fig. 27 is a sectional view taken along line XXII-XXII shown in fig. 26.

Fig. 28 is an external perspective view showing another example of the insulating base according to embodiment 1.

Fig. 29 is a front view showing another example of the fixed shutter portion according to embodiment 1.

Fig. 30 is a front view showing a state in which the fixing baffle portion shown in fig. 29 is attached to the insulating base shown in fig. 28.

Fig. 31 is a front view of the terminal device according to embodiment 2.

Fig. 32 is an external perspective view showing a state where the shutter device is attached to the terminal device according to embodiment 2.

Fig. 33 is an external perspective view of the 3 rd fixed shutter according to embodiment 2.

Fig. 34 is an external perspective view of the sub-panel according to embodiment 2.

Detailed Description

Hereinafter, a pull-out type circuit breaker according to an embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the present embodiment.