JP5688627B2 - Circuit breaker - Google Patents

Description

  The present invention relates to a circuit breaker having a mounting structure for mounting a circuit breaker to a mounting board of a distribution board.

  FIG. 6 shows an example of a structure in which a conventional circuit breaker 61 is attached to an attachment plate 62 of a distribution board. In this mounting structure, first, the recess 63 on the power source side of the circuit breaker 61 is fitted to the protrusion 64 of the mounting plate 62 in a state where the circuit breaker 61 is inclined with respect to the mounting plate 62, and then the circuit breaker 61 is fitted. Is closely attached to the mounting plate 62, and a recess 66 provided on the load side of the circuit breaker 61 is fitted with an elastic protruding portion 66 that is also retrofitted to the mounting plate, and the power source terminal and the bus bar are tightened with screws. It was a structure to connect.

  However, the plug-in type circuit breaker as shown in Fig. 1 has a plug-in terminal on the power supply side for connecting to the bus bar provided on the mounting plate without screws. 6 is mounted on the mounting plate in the mounting method shown in FIG. 6 because it is necessary to slide the load from the load side toward the bus so that the bus is inserted into the plug-in terminal fitting. When the circuit breaker is arranged, the bottom surface of the circuit breaker interferes with the protruding piece 66 and cannot be attached to the mounting plate. Further, when removing, it is necessary to remove the circuit breaker while pressing the end of the protruding piece 66 using a tool such as a screwdriver. Further, since the protruding piece 66 protrudes from the load side surface of the circuit breaker, there is a possibility that the wire coating may be damaged at the tip of the protruding piece 66 when the electric wire is routed in the distribution board.

  The present invention solves the above-mentioned conventional problems, and can be easily installed even with a circuit breaker such as a plug-in type, the wiring is not damaged, and the circuit breaker has a mounting structure that does not require a tool at the time of removal. The purpose is to provide a vessel.

Accordingly, the invention of claim 1 is a plug-in type circuit breaker in which a plug-in terminal fitting into which a bus bar such as a distribution board is inserted is provided on the power supply side, and on the load side of the circuit breaker, a wire insertion hole can be inserted the wire, with the said circuit breaker providing a lock lever for restricting the movement removed from the bus, a mounting plate, such as the distribution board and to the bottom surface of the circuit breaker When the circuit breaker is slid and attached in the direction of the busbar, a fitting portion and a fitted portion that are fitted to each other to restrict the vertical movement of the circuit breaker with respect to the mounting plate are provided, The lock lever has a finger hook portion protruding from the side surface on the load side, and the finger hook portion selectively selects and holds whether or not it protrudes downward from the bottom surface of the circuit breaker. Projecting downward from the bottom of the circuit breaker Provided is a circuit breaker characterized by being provided with a locking portion for restricting movement in a direction of removing the circuit breaker from the bus bar by being fitted to a fitting portion provided on the mounting plate. Is.

  As described above, according to the present invention, it is possible to provide a circuit breaker having a mounting structure that can be easily mounted even with a circuit breaker such as a plug-in type, the wiring is not damaged, and a tool is not required at the time of removal. Can do.

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 3 show an embodiment of a circuit breaker according to the present invention.

  1 to 3, reference numeral 1 is a circuit breaker having a plug-in type terminal on the power supply side, 2 is a mounting plate provided on the distribution board, and 3 and 4 are mounting plates provided on the mounting plate. The claw part a and the claw parts b, 5 and 6 for restricting the movement in the direction perpendicular to the plate are provided on the circuit breaker side corresponding to the claw part, and the recessed part a and the recessed parts b and 7 are provided on the circuit breaker side. A lock lever for restricting movement in the direction in which the circuit breaker is removed from the mounting plate, 8 is a fitting portion on the mounting plate side to be fitted with the lock lever 7, and 9 and 10 are protrusions a for regulating the side surface of the circuit breaker. And protrusion b. Reference numerals 11 and 12 denote bus bars provided on the mounting plate, reference numerals 13 and 14 denote plug-in terminal portions, and reference numerals 15 and 16 denote plug-in terminal fittings. The claw part 3 of 3 and the claw part 4 of 4 are extended from the power supply side toward the load side (open), and the concave part 5 and the concave part b of 6 are opened toward the power supply side. Thus, when the circuit breaker 1 is placed on the mounting plate 2 and slid in the direction of the bus, the three claw portions a and the concave portion a of 5 are fitted to the four claw portions b and the concave portion b of the fitting. The movement in the direction perpendicular to the plate can be restricted.

  1 shows a state in which the lock lever 7 does not protrude from the bottom surface of the circuit breaker, but FIG. 4 shows an appearance in which the lock lever 7 protrudes from the bottom surface of the circuit breaker. The lock lever 7 can be operated with the finger hook portion 702 selectively at the upper end portion and the lower end portion of the frame portion 701 so that the locking portion 703 protrudes or does not protrude from the bottom surface.

  FIG. 5 shows the structure around the lock lever 7 in the circuit breaker. This state shows a state in which the lock lever 7 does not protrude from the bottom surface of the circuit breaker. As shown in the figure, the finger hook portion 702 hardly protrudes from the load side surface of the circuit breaker. By fitting one of the projection 17 and the two grooves 18 and 19 provided on the circuit breaker side, it is possible to stably hold the two positions when protruding from the bottom of the circuit breaker and when not protruding. It is like that.

  The case where a circuit breaker is attached to an attachment board by the attachment structure comprised in this way is demonstrated. First, in FIG. 1, the locking portion 703 of the lock lever 7 of the circuit breaker 1 is set so as not to protrude from the bottom surface of the circuit breaker, so that the breaker comes between the protruding portions a9 and b10 of the mounting plate. In addition, it is placed on the mounting plate so that the four claw portions b come to the openings of the recess portions 6 of the circuit breaker. At this time, the claw portions 3 and 4 and the recesses 5 and 6 of the circuit breaker are not engaged with each other. Next, when the circuit breaker 1 is slid in the direction of the buses 11 and 12, the buses 11 and 12 are inserted into the plug-in terminal fittings 15 and 16, and the claw portion 3 and the claw portion 4 provided on the mounting plate. Engages with the recess 5 and the recess 6 of the circuit breaker, respectively.

  As described above, the circuit breaker is restricted from moving in the upward direction (vertical direction with respect to the mounting plate) and the side surface in FIG. 1, but in this state, the circuit breaker is in a direction far from the buses 11 and 12 (load of the circuit breaker). It can be removed in the lateral direction.

  Next, when the finger hooking portion 702 of the lock lever 7 is pressed in the direction of the mounting plate with a finger, the locking portion 703 protrudes from the bottom surface of the circuit breaker and is fitted into the fitting portion 8 of the mounting plate. Thereby, the movement of the direction which removes a circuit breaker from a bus-bar can be controlled, and it will be in the state where the circuit breaker 1 was attached to the attachment board 2. FIG.

  Next, the case where the circuit breaker 1 is removed from the mounting plate 2 will be described. First, the finger hooking portion 702 of the lock lever 7 is pulled up with a finger in the direction opposite to the mounting plate, and the fitting between the fitting portion 8 and the locking portion 703 of the lock lever 7 is released. Next, the circuit breaker 1 is moved so as to be pulled out in the direction opposite to the bus bars 11 and 12, so that the fitting of the claw part 3 and the claw part 4 with the recessed part 5 and the recessed part 6 is released. In this state, the circuit breaker 1 can be removed from the mounting plate 2 by lifting it from the mounting plate.

  As described above, in order to attach the plug-in type circuit breaker 1 to the attachment plate 2 provided on the distribution board, the claw portion 3 and the claw portion 4 that restrict the movement in the direction perpendicular to the attachment plate 2. Is provided in the mounting plate 2, the recesses 5 and 6 corresponding to the claw portions 3 and 4 are provided in the circuit breaker 1, and the circuit breaker 1 is removed from the bus bars 11 and 12 provided in the mounting plate 2. The circuit breaker 1 is provided with a lock lever 7 that restricts the movement of the circuit breaker 1 and the mounting plate 2 is provided with a fitting portion 8 into which the lock lever 7 is fitted. Since the portion 10 is provided on the mounting plate 2, it is possible to mount the plug-in type circuit breaker while sliding it parallel to the mounting plate. Is the negative of the circuit breaker There is no risk of damaging the wire coating because it does not only slightly protrude from a side aspect. Moreover, it is not necessary to use a tool for removing the circuit breaker, and it is possible to provide a circuit breaker having an attachment structure that does not require the carrying of the tool.

  In the embodiment, the projections 9 and 10 for regulating the position of the side surface of the circuit breaker are provided. However, it is not necessary by appropriately setting the width dimension relationship between the claw portions 3 and 4 and the recesses 5 and 6. And can. Moreover, although the fitting part 8 demonstrated in the example formed by bending the edge part of the attachment plate 2, it may be a hole corresponding to the magnitude | size of the latching | locking part 703, and it protrudes by the dimensional relationship of a hole and a latching | locking part. The parts 9 and 10 can be made unnecessary. These can be appropriately changed within the scope of the claims of the present invention.

Example of mounting structure of circuit breaker and mounting plate. Example of mounting structure of circuit breaker and mounting plate. Example of mounting structure of circuit breaker and mounting plate. External view explanatory drawing of a lock lever part. Explanatory drawing of the said part of a lock lever and a circuit breaker main body. Example of mounting structure of conventional circuit breaker and mounting plate.

DESCRIPTION OF SYMBOLS 1 Circuit breaker 2 Mounting plate 3 Claw part 4 Claw part 5 Concave part 6 Concave part 7 Lock lever 702 Finger hook part 703 Locking part 8 Fitting part 9 Protruding part 10 Protruding part 11 12 Bus 1313 14 Plug-in terminal part 15 16 Plug Inner terminal fitting 17 Protrusion 18 Groove 19 Groove

Claims (1)

A plug-in type circuit breaker in which a plug-in terminal fitting into which a bus such as a distribution board is inserted is provided on the power supply side,
The load side of the circuit breaker is provided with a wire insertion hole into which an electric wire can be inserted, and a lock lever for restricting movement in a direction of removing the circuit breaker from the bus,
When the circuit breaker is slid in the direction of the busbar and attached to the mounting plate such as the distribution board and the bottom surface of the circuit breaker, the vertical movement of the circuit breaker relative to the mounting plate A fitting portion and a fitted portion that are fitted to each other ,
The lock lever includes a finger hook that protrudes from the side surface on the load side,
The finger-hanging portion is selectively selected and held to project downward from the bottom surface of the circuit breaker, and to the fitting portion provided on the mounting plate that projects downward from the bottom surface of the circuit breaker. A circuit breaker, characterized in that, by fitting, a locking portion that restricts movement in a direction of removing the circuit breaker from the busbar is provided.

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