JP5578677B2 - Circuit breaker terminal cover - Google Patents

Description

  The present invention relates to a cover for protecting a wiring connection portion of a circuit breaker for wiring.

  Conventionally, a circuit breaker as shown in Patent Document 1 has been used. A plurality of wires are connected to the terminals of such a circuit breaker. However, if the terminals are exposed, there is a risk of electric shock. Therefore, as shown in FIG. A structure in which a cover 950 is attached to the circuit breaker 900 for wiring to prevent electric shock has been proposed. The terminal cover 950 has a structure in which a side wall 952 is formed in the vertical direction from the cover upper surface 951 and a different-polarity interval wall 953 is formed between the side walls 952 in the vertical direction from the cover upper surface 951. A space surrounded by the upper surface 951 of the cover and the side wall 952 or the different-polarity interval wall 953 is an output line 954, and the wiring 990 is output from the output line 954 to the outside. In a state where the terminal cover 950 is attached, the different pole spacing wall 953 enters between the adjacent wirings 990, and this different pole spacing wall 953 prevents a tool or a finger from entering the output line 954. Yes.

JP 2008-262935 A

Since wires having different sizes are attached to the circuit breaker 900 for wiring, the output port 953 needs to be sized to correspond to the maximum size of the wires to be connected. For this reason, there is a possibility that a tool or a finger may enter the outlet line 954.
The present invention provides a technique capable of solving the above problems and preventing contact with a wiring connection portion of a power distribution breaker.

The invention according to claim 1, which has been made to solve the above problems,
A terminal cover covering a plurality of terminals provided at an end of the circuit breaker for wiring,
An upper surface, a side wall extending vertically from both side edges of the upper surface, and a heteropolar spacing wall extending vertically from the upper surface and formed between the side walls, the upper surface and the side wall or the heteropolar spacing wall An output wire opening is formed by the enclosed space, and the output wire side of the terminal is covered with the upper surface and the side wall or a side wall between different poles, and the wiring connected to the terminal from the output wire port is output from the hard resin. The cover body has a flexible soft resin protective cover piece formed so as to close the outlet opening from the upper surface , and the tip of the protective cover piece is connected to the outlet opening. The protective cover piece is provided to be inclined toward the opening .

According to the present invention, the flexible resin cover body that covers the outgoing line side of the terminal with the upper surface and the side wall or the side wall between different poles is formed so as to close the outgoing port from the upper surface. Since the protective cover piece made of soft resin is provided, the opening of each outlet opening after the wiring is attached is closed by the protective cover piece regardless of the wire diameter of the wiring connected to the terminal. Tools and fingers can be prevented from entering the cable, and contact with the wiring connection portion of the power distribution breaker can be prevented. In addition, according to the present invention, each protective cover piece is deformed to the outside only by the work of lowering the terminal cover from the upper side and attaching it to the circuit breaker for wiring, and hangs down on the wiring coming out from each outgoing port. Since the opening of each outlet is closed by the protective cover piece, the mounting workability is excellent.

It is an attachment state perspective view of the terminal cover of the circuit breaker for wiring of a 1st embodiment. It is a perspective view of the state where the terminal cover of the circuit breaker for wiring of a 1st embodiment was pulled up. It is a disassembled perspective view of the terminal cover of the circuit breaker for wiring of 1st Embodiment. It is AA sectional drawing of FIG. It is a perspective view of the state where a terminal cover of a circuit breaker for wiring of a 1st embodiment was pulled up after wiring was attached. It is a perspective view of the terminal cover of the circuit breaker of another example of a 1st embodiment. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG. It is a perspective view of the terminal cover of the circuit breaker for wiring of 2nd Embodiment. It is a perspective view of the conventional terminal protection cover.

(First embodiment)
A preferred embodiment (first embodiment) of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, 10 is a circuit breaker for wiring, and 20 is a terminal cover of the circuit breaker for wiring (hereinafter referred to as terminal cover 20). In the present specification, the protruding direction of the lever 12 is the upward direction.

  The circuit breaker 10 for wiring has a power supply side terminal and a load side terminal 12 (shown in FIG. 2) of multiple poles, and automatically disconnects the wiring path between the power supply side terminal and the load side terminal 12 in the event of an overload or short circuit. An overcurrent tripping device. The overcurrent tripping device is disposed in the housing 11 of the circuit breaker 10 for wiring. As shown in FIG. 2, a plurality of terminal attachment portions 11 a that open to one end side and upward are formed in parallel at one end of the housing 11 of the circuit breaker 10 for wiring. A partition wall 11b is erected between adjacent terminal attachment portions 11a. The load side terminal 12 is attached to the terminal attaching portion 11a. Similar to one end of the housing 11, a plurality of terminal attachment portions are formed in parallel on the other end side of the housing 11, and a power supply side terminal is attached to the terminal attachment portion.

  The terminal cover 20 includes a terminal cover main body 21 molded from a hard resin and a protective cover member 22 molded from a flexible resin. The hard resin includes ABS resin (acrylotrinitrol butadiene distyrene resin), acrylic resin, polyethylene, polystyrene, polypropylene, and polyvinyl chloride. The soft resin is softer and more flexible than the hard resin, and includes elastomer and rubber.

  The terminal cover main body 21 has an upper surface 21a, a side wall 21b extending in a vertical direction (downward direction) from both ends of the upper surface 21a, and a vertical direction (lower direction) from the upper surface 21a so as to separate the side wall 21b. An extending different-polarity spacing wall 21c is integrally formed. As shown in FIG. 1, when the terminal cover 20 is attached to the circuit breaker 10 for wiring, the upper surface 21a is located on the same plane as or parallel to the plane on which the handle 12 of the housing 11 is located. Yes. A space surrounded by the upper surface 21a and the side wall 21b or the heteropolar spacing wall 21c is an outgoing line opening 21d (shown in FIG. 3). As shown in FIG. 3, the upper surface 21a is formed with rectangular mounting holes 21e that communicate with the outgoing line ports 21d in one row in the width direction of the upper surface 21a. As shown in FIG. 3, a mounting groove 21g for connecting each mounting hole 21e is formed as a recess in the upper surface 21a.

  4A is a cross-sectional view taken along the line AA in FIG. 2 before the protective cover member 22 is attached, and FIG. 4B is a cross-sectional view taken along the line AA in FIG. As shown in FIG. 4A, an engaging portion 21f, which is a space formed in the outlet side direction of the outlet 21d, is formed below the mounting hole 21e.

  As shown in FIG. 3, the protective cover member 22 is formed by integrally molding a plurality of plate-shaped protective cover pieces 22a formed side by side and a connecting portion 22b connecting the upper ends of the plurality of protective cover pieces 22a. Has been configured. As shown in FIG. 3, an engaging protrusion 22c is formed at a position where each protective cover piece 22a is connected to the connecting portion 22b. By inserting each protective cover piece 22a into the mounting hole 21e, the connecting portion 22b engages with the mounting groove 21g, and each engaging projection 22c engages with each engaging portion 21f (FIG. 4B). The protective cover member 22 is attached to the upper surface 21a of the terminal cover main body 21. In a state where the protective cover member 22 is attached to the terminal cover main body 21, each cover piece 22a hangs down from the upper surface 21a so as to close the outlet opening 21d. Further, each protective cover piece 22a is inclined so that the tip of each protective cover piece 22a faces the opening of each outgoing line opening 21d.

  As shown in FIG. 5, after connecting the wiring 99 to the load-side terminal 12, each terminal mounting portion 11a and each outlet 21d are matched so that each terminal mounting portion 11a is covered with the upper surface 21a. The terminal cover 20 is attached to the end of the circuit breaker 10 for wiring (shown in FIG. 1). Then, the outgoing line side of the load side terminal 12 is covered with the upper surface 21a and the side wall 21b or the heteropolar side wall 21c, and the wiring 99 connected to the load side terminal 12 is output from the outgoing line port 21d. Since the protective cover member 22 has flexibility, each protective cover piece 22a is deformed to the outside and hangs down on the wiring 99 extending from each outgoing line 21d. For this reason, irrespective of the wire diameter of the wiring 99, the opening of each outgoing line 21d after the wiring 99 is attached is closed by the protective cover piece 22a, and the entry of a tool or a finger into each outgoing line 21d is prevented. Is prevented.

As described above, the front end of the protective cover piece 22a is attached to the upper surface 21a so as to be inclined toward the opening of the outgoing line opening 22d. For this reason, the protective cover pieces 22a are deformed outward by simple operations of lowering the terminal cover 20 from the lower side and being attached to the circuit breaker 10, and wirings 99 that are output from the output ports 21d. Since it hangs down, it is excellent in installation workability. As shown in FIG. 4B, since the engaging protrusion 22c is engaged with the engaging portion 21f, even if the protective cover piece 22a is pushed by the wiring 99, the protective cover member 22 remains in the housing. 11 is not to be removed.
In addition, the protective cover member 22 is attached also to the power supply side of the circuit breaker 10 for wiring similarly to the load side.

  Hereinafter, another example of the first embodiment will be described with reference to FIGS. 6 to 9 for differences from the embodiment described above. In this embodiment, instead of the mounting hole 21e, a mounting recess 21h is formed on the back side of the upper surface 21a. As shown in FIG. 8B, the upper surface 21a of the portion where the mounting recess 21h is formed is a contact portion 21j. As shown in FIG. 8B, engaging recesses 21i are formed at both ends of the mounting recess 21h. A drop-off prevention piece 21k is formed below the engagement recess 21i (upward in FIG. 8B). The protective cover member 23 of this embodiment is configured by integrally molding a plate-shaped protective cover piece 23a and a block-shaped attachment portion 23b formed at the base end of the protective cover piece 23a. As shown in FIG. 8, engagement pieces 23c are formed at both ends of the attachment portion 23b.

  As shown in FIG. 8, the attachment portion 23b is inserted into the attachment recess 21h, the engagement piece 23c engages with the engagement recess 21i, and the protective cover member 23 is attached to the upper surface 21a. In a state where the protective cover member 23 is attached to the upper surface 21a, the protective cover piece 23a is inclined and closes the outgoing line port 21d so that the tip of the protective cover piece 23a faces the opening of the outgoing line port 21d. . In this embodiment, even if the protective cover piece 23a is pushed by the wiring 99, the movement of the mounting portion 23b is suppressed by the contact portion 21j, so that the protective cover member 23 does not come off the upper surface 21a. Yes. Further, since the engagement piece 23c is engaged with the engagement recess 21i and is in contact with the drop-off prevention piece 21k, the protective cover member 23 is prevented from dropping from the upper surface 21a.

(Second Embodiment)
The difference between the terminal cover 30 of the circuit breaker of the second embodiment and the terminal cover 20 of the circuit breaker of the first embodiment will be described with reference to FIG. As for the protective cover member 32 of 2nd Embodiment, the front-end | tip of each protective cover piece 32a is connected by the connection part 32b. Thereby, even if a certain protective cover piece 32a is pushed into the inside of the outgoing line port 21d, the connecting portion 32a comes into contact with the different pole spacing wall 21c, and the deformation of the protective cover piece 32a to the inner side of the outgoing line port 21d is suppressed. Is done. For this reason, entry of a tool or a finger into each outgoing line 21d is further prevented.

  In the embodiment described above, the terminal covers 20, 30 and the protective cover members 22, 23, 32 are formed separately, but the terminal covers 20, 30 and the protective cover members 22, 23, 32 are mixed in two colors. The terminal covers 20 and 30 of the circuit breaker for wiring may be formed by integral molding.

  Although the present invention has been described above in connection with the most practical and preferred embodiments at the present time, the present invention is not limited to the embodiments disclosed herein. The terminal cover of the circuit breaker for wiring with such a change is also included in the technical scope without departing from the spirit or concept of the invention that can be read from the claims and the entire specification. Must be understood as.

DESCRIPTION OF SYMBOLS 10 Circuit breaker 11 Case 11a Terminal attachment part 11b Partition wall 20 Terminal cover of wiring circuit breaker (1st Embodiment)
21 terminal cover main body 21a upper surface 21b side wall 21c different polarity spacing wall 21d outlet port 21e mounting hole 21f engaging portion 21g mounting groove 21h mounting recess 21i engaging recess 21j abutting portion 21k drop-off prevention piece 22 protective cover member (first cover member) Embodiment)
22a Protective cover piece 22b Connecting portion 22c Engaging projection 23 Protective cover member (another example of the first embodiment)
23a Protective cover piece 23b Mounting portion 23c Engagement piece 30 Terminal cover of circuit breaker for wiring (second embodiment)
32 Protective cover member 99 Wiring

Claims (1)

A terminal cover covering a plurality of terminals provided at an end of the circuit breaker for wiring,
An upper surface, a side wall extending vertically from both side edges of the upper surface, and a heteropolar spacing wall extending vertically from the upper surface and formed between the side walls, the upper surface and the side wall or the heteropolar spacing wall An output wire opening is formed by the enclosed space, and the output wire side of the terminal is covered with the upper surface and the side wall or a side wall between different poles, and the wiring connected to the terminal from the output wire port is output from the hard resin. The cover body has a flexible soft resin protective cover piece formed so as to close the outlet opening from the upper surface , and the tip of the protective cover piece is connected to the outlet opening. A terminal cover for a circuit breaker for wiring , wherein the protective cover piece is inclined toward the opening .

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