JP2021190271A - Circuit breaker unit - Google Patents

Abstract

To obtain a circuit breaker unit that can easily attach and detach a circuit breaker by a connecting component even when a unit member is provided on the load side.SOLUTION: A circuit breaker unit 1 includes a circuit breaker 2, a unit member 3, a mounting plate 5, and a connecting component 4. The circuit breaker 2 includes a first surface 25a facing a fixed surface 61, a second surface 25b extending from the first surface 25a and having a power supply terminal 21, and a third surface 25c extending from the first surface 25a, facing the opposite side of the second surface 25b, and having a load terminal 26. The mounting plate 5 is fixed to the fixed surface 61. The connecting component 4 is inserted into the third surface 25c to connect the circuit breaker 2 and the mounting plate 5. The connecting component 4 includes an operation unit 47 that is inserted into the third surface 25c and is exposed in the extraction direction of the connecting component 4 from the unit member 3 when viewed from a direction perpendicular to the fixed surface 61.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to a circuit breaker unit comprising a circuit breaker fixed to a fixed surface by connecting components.

The circuit breaker is fixed to a fixed surface of a fixing object such as a distribution board. In Patent Document 1, the circuit breaker can be fixed to a fixed surface by inserting a connecting component from the side where the load terminal of the circuit breaker is provided, thereby facilitating the installation and removal work of the circuit breaker. The configuration is disclosed. In the following description, the side provided with the load terminal of the circuit breaker is also simply referred to as the load side.

Jikkenhei 6-5305 Gazette

A unit member such as a quick-connect terminal unit may be attached to the circuit breaker on the load side. When the unit member is attached to the load side, the connecting part is covered by the unit member. If the connecting parts are covered with the unit members, it becomes difficult to operate the connecting parts, and it becomes difficult to install and remove the circuit breaker.

The present disclosure has been made in view of the above, and an object thereof is to obtain a circuit breaker unit in which a circuit breaker can be easily attached and detached by connecting parts even if a unit member is provided on the load side. There is.

In order to solve the above-mentioned problems and achieve the object, the present disclosure describes the first surface facing the fixed surface, the second surface extending from the first surface and the power supply terminal being provided, and the first surface. A circuit breaker that extends to face the opposite side of the second surface and has a third surface provided with a load terminal, a unit member attached to the third surface, and provided between the fixed surface and the first surface. It includes a mounting plate that is fixed to the fixed surface, and a connecting component that is inserted into the third surface to connect the circuit breaker and the mounting plate. The unit member has a facing surface facing the mounting plate with a gap provided between the unit member and the mounting plate. A protruding portion is formed on the facing surface so as to project toward the mounting plate. The connecting component is provided between the facing surface and the mounting plate. The connecting component is formed with a notch to avoid interference with the protrusion. The connecting component has an operating portion that is inserted into the third surface and is exposed in the extraction direction of the connecting component rather than the unit member when viewed from a direction perpendicular to the fixed surface.

According to the present disclosure, it is possible to obtain a circuit breaker unit in which the circuit breaker can be easily attached and detached by connecting parts even if the unit member is provided on the load side.

Side view of the circuit breaker unit according to the first embodiment Top view of the mounting plate according to the first embodiment Sectional drawing along line III-III shown in FIG. Front view of connecting parts according to the first embodiment Side view of connecting parts according to the first embodiment Rear view of connecting parts according to the first embodiment Sectional drawing along the line VII-VII shown in FIG. Partially enlarged view of part B shown in FIG.

Hereinafter, the circuit breaker unit according to the embodiment will be described in detail with reference to the drawings.

Embodiment 1.
FIG. 1 is a side view of the circuit breaker unit according to the first embodiment. The circuit breaker unit 1 includes a circuit breaker 2, a quick connection terminal unit 3, a mounting plate 5, and a connecting component 4. The circuit breaker 2 is attached to the fixing surface 61 of the fixing object such as a distribution board by using the attachment plate 5 and the connecting component 4. The quick connection terminal unit 3 is attached to the circuit breaker 2.

The circuit breaker 2 has a box-shaped main body 25. The main body 25 has a first surface 25a facing the fixed surface, a second surface 25b and a third surface 25c extending from the first surface 25a, and a fourth surface 25d facing the opposite side of the first surface 25a.

A power supply terminal 21 connected to the power supply side is provided on the second surface 25b of the main body 25. A load terminal 26 connected to the load side is provided on the third surface 25c of the main body 25. The fourth surface 25d of the main body 25 is an operation surface provided with the handle 23. By operating the handle 23, it is possible to switch between electrical connection and disconnection between the power supply terminal 21 and the load terminal 26.

A first recess 22 is formed on the second surface 25b of the main body 25. A second recess 24 is formed on the third surface 25c of the main body 25.

In the first embodiment, it is assumed that the fixed surface 61 to which the circuit breaker 2 is fixed is a vertical surface, and the direction from the second surface 25b to the third surface 25c is the vertical direction. In the following description, the vertical direction is referred to as a vertical direction. Further, the direction perpendicular to the fixed surface 61 is referred to as a thickness direction. Further, the direction perpendicular to the vertical direction and the thickness direction is referred to as a width direction. The circuit breaker 2 is installed with the second surface 25b provided with the power supply terminal 21 facing upward. Further, the power supply terminals 21 are arranged side by side in the thickness direction.

The configuration of the opening / closing mechanism, the tripping mechanism, and the like built in the main body 25 of the circuit breaker 2 is the same as that of a general circuit breaker, and the description thereof will be omitted. Further, the circuit breaker 2 may be a circuit breaker that detects an overcurrent and disconnects, or an earth-leakage circuit breaker that detects an earth leakage and disconnects, or is simply referred to as a switch that opens and closes a circuit. It may be the one that is done.

The quick connection terminal unit 3 is a unit member attached to the third surface 25c of the main body 25 of the circuit breaker 2. The quick-connect terminal unit 3 has a quick-connect terminal 31 that can be connected simply by inserting an electric wire. The quick connection terminal unit 3 is connected to the load terminal 26 of the circuit breaker 2. By connecting the quick connection terminal unit 3 to the load terminal 26 of the circuit breaker 2, the power supply terminal 21 of the circuit breaker 2 and the quick connection terminal 31 of the quick connection terminal unit 3 are electrically connected by operating the handle 23. You will be able to switch the cutoff.

The quick connection terminal unit 3 has a grounding lead wire 39. A grounding terminal 38 is attached to the tip of the grounding lead wire 39. The ground terminal 38 is a crimp terminal. The grounding terminal 38 has a crimping portion 38b connected to the grounding lead wire 39 by crimping, and a tongue portion 38a having a hole 38c through which a screw or the like can penetrate. The ground terminal 38 is grounded by coming into contact with the mounting plate 5, and the connection method and the like will be described in detail later.

The length of the quick-connect terminal unit 3 in the thickness direction on the side connected to the circuit breaker 2 is shorter than that of the circuit breaker 2, and the third surface 25c of the main body 25 of the circuit breaker 2 is on the mounting plate 5 side. A part of the area is not covered by the quick connection terminal unit 3. The second recess 24 of the main body 25 is formed in a region not covered by the quick-connect terminal unit 3.

The quick-connect terminal unit 3 has a facing surface 32 that is farther from the fixed surface 61 than the first surface 21a by making the length in the thickness direction of the side connected to the circuit breaker 2 shorter than that of the circuit breaker 2. ing. The facing surface 32 faces the mounting plate 5 with a gap provided between the facing surface 32 and the mounting plate 5. A protruding portion 33 is formed on the facing surface 32 so as to project toward the mounting plate 5. When the tip of the protrusion 33 comes into contact with the mounting plate 5 or the fixed surface 61, the posture of the circuit breaker 2 and the quick connection terminal unit 3 is stabilized. As a result, it is possible to prevent the circuit breaker 2 and the quick-connect terminal unit 3 from rattling when the work of inserting the electric wire into the quick-connect terminal 31 is performed.

FIG. 2 is a plan view of the mounting plate according to the first embodiment. FIG. 3 is a cross-sectional view taken along the line III-III shown in FIG.

The mounting plate 5 is a plate-shaped member having a longitudinal direction as a longitudinal direction. The mounting plate 5 is made of a conductive material such as metal. The mounting plate 5 is formed in a shape longer in the vertical direction than the circuit breaker 2 in which the quick-connect terminal unit 3 is mounted. The mounting plate 5 is formed with a hole 51 for fixing to the fixing surface 61 with a screw or the like and a notched screw tightening portion 56.

A holding portion 52 is formed on the mounting plate 5. The pressing portion 52 protrudes in a direction away from the fixed surface 61, and the tip thereof is bent. As shown in FIG. 1, the pressed portion 52 has a bent tip inserted into a first recess 22 formed in the main body 25 of the circuit breaker 2.

The mounting plate 5 has a first region 57 and a second region 58. The first region 57 is a region in contact with the circuit breaker 2. The second region 58 is a region closer to the quick-connect terminal unit 3 than the first region 57, and is a region facing the quick-connect terminal unit 3. The second region 58 is bent in a direction away from the fixed surface 61, and a gap is formed between the second region 58 and the fixed surface 61. A relief portion 5s is formed in the second region 58.

The relief portion 5s is a notch formed in order to avoid interference with the protruding portion 33 formed in the quick-connect terminal unit 3. A fixing groove 5t is formed in the relief portion 5s. The fixed groove 5t is a groove extending in the vertical direction formed in a region between the circuit breaker 2 and the protrusion 33 when viewed along the width direction. The fixing groove 5t is provided with two places where the width is widened. Of the two locations where the width is widened, the one closer to the first region 57 is the load side pressing position 53, and the other is the removal position 54.

FIG. 4 is a front view of the connecting component according to the first embodiment. FIG. 5 is a side view of the connecting component according to the first embodiment. FIG. 6 is a rear view of the connecting component according to the first embodiment.

The connecting component 4 is a member whose longitudinal direction is the longitudinal direction. The connecting component 4 is made of an insulating resin. Of the connecting parts 4, the surface facing the fixed surface 61 side is referred to as a back surface 4a.

The end of the connecting component 4 on the circuit breaker 2 side is an insertion portion 43 to be inserted into the second recess 24 of the circuit breaker 2. In the first embodiment, the thickness of the insertion portion 43 becomes smaller toward the tip so that the insertion portion 43 can be easily inserted into the second recess 24. The thickness of the insertion portion 43 may be constant as long as it can be inserted into the second recess 24.

A press-fitting portion 41 projecting toward the fixed surface 61 is formed on the back surface 4a of the connecting component 4. The press-fitting portion 41 is a first protrusion inserted into a hole 38c formed in the tongue portion 38a of the grounding terminal 38 included in the quick-connect terminal unit 3.

The connecting component 4 is formed with a through hole 4b that penetrates in the thickness direction. In the first embodiment, a square through hole 4b is illustrated, but the shape of the through hole 4b is not limited to this. A slide portion 45 extending in the vertical direction is formed from the edge of the through hole 4b. The slide portion 45 is formed in a rod shape extending in the vertical direction, and can be elastically deformed in the width direction.

A second protrusion 46 protruding toward the back surface 4a is formed at the tip of the slide portion 45. The second protrusion 46 is formed at a height exceeding the thickness of the second region 58 of the mounting plate 5. At the tip of the second protrusion 46, a hooking portion 42 having a cross-sectional area cut along a plane parallel to the back surface 4a is formed so as to be larger than that of the second protrusion 46. The hooking portion 42 extends to a region that does not overlap with the fixing groove 5t when viewed along the thickness direction in a state where the second protrusion 46 is inside the fixing groove 5t.

A relief portion 4s is formed in the connecting component 4. The relief portion 4s is a notch formed in order to avoid interference with the protruding portion 33 formed in the quick-connect terminal unit 3.

The length D1 along the vertical direction of the connecting component 4 excluding the portion inserted into the second recess 24 of the circuit breaker 2 is longer than the length D2 shown in FIG. The length D2 is the length from the opposite surface of the quick-connect terminal unit 3 facing the circuit breaker 2 side to the third surface 25c of the circuit breaker 2.

Therefore, the connecting component 4 has a region where the circuit breaker 2 and the quick-connect terminal unit 3 do not overlap when the circuit breaker unit 1 is viewed along the thickness direction. This area becomes the operation unit 47. The operation unit 47 is formed with a hole penetrating along the thickness direction. This hole becomes the tool insertion hole 44.

Next, a method of fixing the circuit breaker unit 1 to the fixed surface 61 will be described. FIG. 7 is a cross-sectional view taken along the line VII-VII shown in FIG. FIG. 8 is a partially enlarged view of the portion B shown in FIG. 1.

First, the mounting plate 5 is fixed to the fixing surface 61. Next, the circuit breaker 2 is placed in the first region 57 of the mounting plate 5. At this time, the holding portion 52 of the mounting plate 5 is inserted into the first recess 22 of the circuit breaker. The quick connection terminal unit 3 may be attached to the circuit breaker 2 before the circuit breaker 2 is placed on the mounting plate, or may be attached to the circuit breaker 2 afterwards.

Next, the connecting component 4 placed on the second region 58 of the mounting plate 5 is slid in the vertical direction, and the insertion portion 43 is inserted into the second recess 24 of the circuit breaker 2. As a result, the circuit breaker 2 is connected to the mounting plate 5 by the holding portion 52 of the mounting plate 5 and the insertion portion 43 of the connecting component 4. As a result, the circuit breaker 2 and the quick connection terminal unit 3 are fixed to the fixed surface 61.

When the insertion portion 43 is inserted into the second recess 24 of the circuit breaker 2, the second protrusion 46 of the connecting component 4 slides and moves inside the fixing groove 5t of the mounting plate 5. The width of the fixing groove 5t is narrower than the width of the second protrusions 46, and the second protrusions 46 are elastically deformed so as to approach each other while sliding inside the fixing groove 5t. At the load-side presser position 53, the width of the fixing groove 5t is wide, and when the second projection 46 reaches the load-side presser position 53, it returns to the state of not being elastically deformed.

When the second protrusion 46 reaches the load side pressing position 53, the insertion portion 43 is inserted into the second recess 24. In order for the insertion portion 43 to move in the direction in which it is pulled out, the second protrusion 46 must also move in the same direction. However, the connecting component 4 cannot be moved in the direction in which the insertion portion 43 is pulled out unless a force sufficient to elastically deform the second protrusion 46 is applied. Therefore, unless the extraction operation for extracting the connecting component 4 is performed, the connecting component 4 does not move, so that the circuit breaker 2 is fixed to the fixed surface 61 and the state is maintained.

Further, since the hooked portion 42 is formed at the tip of the second protrusion 46, the hooked portion 42 is caught on the mounting plate 5, and the movement of the connecting component 4 in the thickness direction is restricted. Therefore, stable fixing of the circuit breaker 2 in which the movement in the thickness direction is restricted is realized.

When the insertion portion 43 of the connecting component 4 is inserted into the second recess 24, the press-fitting portion 41 formed in the connecting component 4 is inserted into the hole 38c formed in the tongue portion 38a of the ground terminal 38. The ground terminal 38 is sandwiched between the connecting component 4 and the mounting plate 5. This makes it possible to perform grounding wiring in which the grounding terminal 38 and the mounting plate 5 are in contact with each other. Compared with the case where the ground terminal 38 is screw-fixed and the ground wiring is performed, the work of performing the ground wiring can be facilitated.

When the circuit breaker 2 is removed from the fixed surface 61, the connecting component 4 is moved in the direction in which the insertion portion 43 is pulled out from the second recess 24, and the second protrusion 46 is removed and moved to the position 54. At the removal position 54, the width of the fixing groove 5t is wide, and when the second protrusion 46 reaches the removal position 54, it returns to the state where it is not elastically deformed. When the second protrusion 46 reaches the removal position 54, the insertion portion 43 is not inserted into the second recess 24.

Similar to the case where the second protrusion 46 is at the load side pressing position 53, when the second protrusion 46 is at the removal position 54, if a force sufficient to elastically deform the second protrusion 46 is not applied, The connecting component 4 cannot be moved. Therefore, if the second protrusion 46 is removed and placed at the position 54, the circuit breaker 2 can be removed in a stable state in which the movement of the connecting component 4 is restricted.

When moving the connecting component 4 to remove the circuit breaker 2, the tool is inserted into the tool insertion hole 44 formed in the operation portion 47 of the connecting component 4. By inserting a tool into the tool insertion hole 44, a force for moving the connecting component 4 can be easily applied to the connecting component 4.

Further, since the operation unit 47 does not overlap with the quick connection terminal unit 3 when viewed along the thickness direction, the tool can be inserted into the tool insertion hole 44 without being disturbed by the quick connection terminal unit 3. can. Therefore, even when a unit member such as the quick-connect terminal unit 3 is attached to the circuit breaker 2, the circuit breaker 2 can be easily removed. The connecting component 4 may be moved by manually applying a force to the operation unit 47. Even in this case, the connecting component 4 can be easily moved as compared with the case where the entire connecting component 4 is hidden by the quick-connect terminal unit 3.

The unit member attached to the circuit breaker 2 is not limited to the quick connection terminal unit 3. For example, it may be a grounding unit.

The configuration shown in the above embodiments is an example, and can be combined with another known technique, can be combined with each other, and does not deviate from the gist. It is also possible to omit or change a part of the configuration.

1 Circuit breaker unit, 2 Circuit breaker, 3 Fast connection terminal unit, 4 Connecting parts, 4a back side, 4b through hole, 4s relief part, 5 mounting plate, 5s relief part, 5t fixing groove, 21 power supply terminal, 22 1st Recess, 23 handle, 24 second dent, 25 main body, 25a 1st surface, 25b 2nd surface, 25c 3rd surface, 25d 4th surface, 26 load terminal, 31 quick connection terminal, 32 facing surface, 33 protrusion , 38 grounding terminal, 38a tongue, 38b crimping part, 38c hole, 39 grounding lead wire, 41 press-fitting part, 42 hooking part, 43 insertion part, 44 tool insertion hole, 45 slide part, 46 second protrusion, 47 Operation part, 51 holes, 52 presser part, 54 removal position, 56 screw tightening part, 57 first area, 58 second area, 61 fixing surface.

Claims (3)

A first surface facing the fixed surface, a second surface extending from the first surface and provided with a power supply terminal, and a load terminal extending from the first surface and facing the opposite side to the second surface are provided. A circuit breaker with a third surface, which is
The unit member attached to the third surface and
A mounting plate provided between the fixed surface and the first surface and fixed to the fixed surface,
A circuit breaker unit including a connecting component inserted into the third surface to connect the circuit breaker and the mounting plate.
The unit member has a facing surface facing the mounting plate with a gap provided between the unit member and the mounting plate.
A protruding portion is formed on the facing surface so as to project toward the mounting plate.
The connecting component is provided between the facing surface and the mounting plate.
The connecting part is formed with a notch to avoid interference with the protrusion.
The connecting component is characterized by having an operating portion that is inserted into the third surface and is exposed in the extraction direction of the connecting component from the unit member when viewed from a direction perpendicular to the fixed surface. Circuit breaker unit. The unit member has a grounding lead wire to which a grounding terminal having a hole is formed at the tip thereof.
The circuit breaker unit according to claim 1, wherein the connecting component is formed with a first protrusion that protrudes toward the mounting plate and is inserted into a hole of the ground terminal. The mounting plate is formed with a groove extending along the insertion direction of the connecting component.
The connecting component is formed with two second protrusions projecting toward the mounting plate and penetrating the groove side by side along the width direction of the groove.
At the tip of the second protrusion, a hooking portion is formed so as to extend to a region that does not overlap with the groove when viewed from a direction perpendicular to the fixing surface in a state where the second protrusion is inside the groove. The circuit breaker unit according to claim 1 or 2.

Images