CN110416032B - Quick connection terminal unit and circuit breaker - Google Patents
Quick connection terminal unit and circuit breaker Download PDFInfo
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- CN110416032B CN110416032B CN201910323568.XA CN201910323568A CN110416032B CN 110416032 B CN110416032 B CN 110416032B CN 201910323568 A CN201910323568 A CN 201910323568A CN 110416032 B CN110416032 B CN 110416032B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/08—Terminals; Connections
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Abstract
The invention aims to obtain a circuit breaker which does not need troublesome wiring operation and has no worry about abnormal operation and the like. The quick connection terminal unit (3) is detachably formed at the end of the main body part (2) of the circuit breaker (1) on the load side, and is used as a load terminal (31) of the circuit breaker (1), 2 quick connection terminals for voltage among the 3 quick connection terminals are configured to electrically connect the terminal member (32) with the electrode of the main body part (2) when the quick connection terminal unit is mounted on the main body part (2), and the other quick connection terminals for grounding are configured to electrically connect the terminal member (32) with a lead led out from the quick connection terminal unit (3) to the outside.
Description
Technical Field
The present invention relates to a quick connection terminal unit which is easy to mount and dismount an electric wire and can be mounted on and dismounted from a circuit breaker such as a wiring breaker and a residual current circuit breaker, and a circuit breaker with the quick connection terminal unit.
Background
For safety reasons, a ground connection is often used for load equipment mounted on the switchgear. On the other hand, the ground wire of the load device is often bundled and covered with other wires, and it is troublesome to connect the ground wire by simply pulling it to a place distant from the opening/closing device. Therefore, there have been proposed a structure in which a terminal for connecting an installation wire is provided in a circuit breaker itself and the circuit breaker is grounded via a mounting metal fitting for fixing the circuit breaker (patent document 1), a structure in which the circuit breaker is grounded using a contact projecting from a rear surface of the circuit breaker (patent document 2), and the like.
Patent document 1: japanese patent laid-open publication No. H11-89018 (paragraphs 0022 to 0025, FIG. 5)
Patent document 2: japanese patent laid-open publication No. 2016-127791 (paragraphs 0046 to 0047, FIG. 5)
On the other hand, in "restriction of sharing of ground line and ground electrode" issued by the general finance and accounting institute of japan electrical association, "there is a strong emphasis on" the ground line and the ground electrode are not shared by the circuit protected by the earth leakage breaker and the equipment installed in the unprotected circuit. However, the case of using a ground electrode having a resistance value of 2 Ω or less is not limited. ". Therefore, when a resistance value larger than 2 Ω is used, it is necessary to use a different system (hereinafter referred to as an insulated ground) for grounding the earth leakage breaker and the wiring breaker.
However, in the above configuration, the ground target is limited to the near front portion of the circuit breaker, and there is no room for selection. Therefore, when the wiring breaker and the earth leakage breaker are used in a mixed manner in the panel, the grounding systems of the wiring breaker and the earth leakage breaker cannot be distinguished from each other, and there is a concern about abnormal operation or the like caused by the separation.
Disclosure of Invention
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a quick connection terminal unit for realizing a circuit breaker that does not require troublesome wiring work or has no fear of abnormal operation, and a circuit breaker equipped with the quick connection terminal unit.
The present invention provides a quick-connection terminal unit detachably formed at a load-side end portion of a main body of a circuit breaker and used as a load terminal of the circuit breaker, the quick-connection terminal unit including 3 quick-connection terminals, each of the 3 quick-connection terminals including: an insertion hole that opens so that an electric wire is inserted from an operation surface side of the circuit breaker; an electric wire holding mechanism which performs holding of the electric wire inserted from the insertion hole and holding operation including electric connection with the internal electrode by a combination of an elastic member and a latch; and a release mechanism having an operation portion disposed so as to be mechanically operable from the operation surface side, the release mechanism releasing the holding operation in association with the mechanical operation, wherein 2 quick-connection terminals out of the 3 quick-connection terminals are configured to electrically connect the internal electrode to an electrode of the main body when the latch is mounted on the main body, and the remaining quick-connection terminals are configured to electrically connect the internal electrode to a lead wire led out from the quick-connection terminal unit to the outside.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the quick-connection terminal unit of the present invention, since the ground wiring to a desired system can be realized only by inserting the wiring from the load device into the quick-connection terminal, a circuit breaker free from the fear of abnormal operation or the like can be obtained without requiring troublesome wiring work.
Drawings
Fig. 1 is a perspective view showing an external appearance of a circuit breaker equipped with a quick-connect terminal unit according to embodiment 1 of the present invention.
Fig. 2 is a perspective view showing the appearance of the quick-connect terminal unit according to embodiment 1 of the present invention and a circuit breaker main body to which the quick-connect terminal unit is mounted.
Fig. 3 is a plan view of a circuit breaker equipped with the quick-connect terminal unit according to embodiment 1 of the present invention.
Fig. 4 is a partial sectional side view of a circuit breaker equipped with a quick-connect terminal unit according to embodiment 1 of the present invention.
Fig. 5 is a cross-sectional view of the quick-connect terminal unit according to embodiment 1 of the present invention.
Fig. 6 is a perspective view showing the appearance of each of a plurality of housing members constituting the quick connection terminal unit according to embodiment 1 of the present invention.
Fig. 7 is a perspective view showing an external appearance of a terminal member constituting the quick-connect terminal unit according to embodiment 1 of the present invention.
Fig. 8 is a perspective view showing an appearance of an elastic member constituting the quick connection terminal unit according to embodiment 1 of the present invention.
Fig. 9 is a perspective view showing an appearance of a display button member constituting the quick connection terminal unit according to embodiment 1 of the present invention.
Fig. 10 is a perspective view showing an appearance of a latch constituting a quick-connect terminal unit according to embodiment 1 of the present invention.
Fig. 11 is a perspective view showing an appearance of a wiring breaker and an earth leakage breaker arranged in parallel as an application example of a circuit breaker equipped with a quick connection terminal unit according to embodiment 1 of the present invention.
Description of the reference numerals
1: circuit breaker, 1s: space, 2: main body (main body), 3: the terminal unit is connected to the connection terminal unit quickly,
3a: is inserted into the hole and is inserted into the hole,
24: fastening member (electrode of main body), 31: load terminal (quick connection terminal), 31e: load-side ground terminal (the remaining quick-connection terminals), 31p: load-side voltage terminal (2 quick connection terminals), 32: terminal member (internal electrode), 32a: wire connection face 32a,33: elastic member, 34: connection display button (release mechanism), 34f: display surface (operation unit), 36: latch, 39: lead wire for grounding (wire), B1, B2, B3: and (5) modules.
Detailed Description
Fig. 1 to 10 are views for explainingbase:Sub>A structure ofbase:Sub>A quick-connection terminal unit orbase:Sub>A circuit breaker equipped with the quick-connection terminal unit according to embodiment 1 of the present invention, fig. 1 isbase:Sub>A perspective view showingbase:Sub>A state in which the circuit breaker equipped with the quick-connection terminal unit is connected tobase:Sub>A selectable ground target, fig. 2 isbase:Sub>A perspective view showing an appearance of the quick-connection terminal unit andbase:Sub>A circuit breaker main body to be loaded with the quick-connection terminal unit, fig. 3 isbase:Sub>A plan view of the circuit breaker equipped with the quick-connection terminal unit as viewed from an operation surface side, fig. 4 isbase:Sub>A side view showing the circuit breaker equipped with the quick-connection terminal unit, and isbase:Sub>A partial cross-sectional side view showingbase:Sub>A portion of the quick-connection terminal unit throughbase:Sub>A cut-off surface atbase:Sub>A-base:Sub>A line of fig. 3, and fig. 5 isbase:Sub>A sectional view corresponding to thebase:Sub>A-base:Sub>A line of fig. 3 showingbase:Sub>A state in which an electric wire is inserted into the quick-connection terminal unit.
Fig. 6 to 10 are views for explaining the respective configurations of main members constituting the quick-coupling terminal unit, fig. 6 is a perspective view showing the respective external appearances of a plurality of housing members serving as a housing of the quick-coupling terminal unit, fig. 7 is a perspective view showing the external appearance of a terminal member for electrically connecting to an inserted electric wire, fig. 8 is a perspective view showing the external appearance of an elastic member for biasing the inserted electric wire, fig. 9 is a perspective view showing the external appearance of a display button member that also functions as an operation portion (button) for displaying the inserted state of the electric wire and releasing the insertion, and fig. 10 is a perspective view showing the external appearance of a latch for holding the inserted state of the electric wire. In the drawings, the same reference numerals are used to designate the same or corresponding parts.
As shown in fig. 1, the circuit breaker 1 according to embodiment 1 is assumed to be provided with a mounting surface on the back side of an operation surface 1fo provided with a handle 23 of a box-shaped main body 2, which is provided with respect to a vertical surface in a distribution board, not shown. In an actual installation situation, a direction in which the power supply side terminal (power supply terminal 21) and the load side terminal (load terminal 31) are connected, that is, a longitudinal direction is a vertical direction, and the longitudinal direction is referred to as a vertical direction in the present specification. A direction perpendicular to the longitudinal direction on the operation surface 1fo is referred to as a width direction, and a direction perpendicular to the operation surface 1fo (vertical direction in fig. 1) is referred to as a thickness direction. In addition, since the circuit breaker is generally configured such that the power supply side is located on the upper side, the right side in the width direction is referred to as the "right side" and the left side is referred to as the "left side".
The power terminals 21 for connection to the power source side are arranged in the thickness direction and disposed at one end in the longitudinal direction, and the load terminals 31 for connection to the load side are disposed at the other end. In the present embodiment, the power supply terminal 21 is described as a type of being fitted to a metal rod arranged in 3 stages in the thickness direction by sliding it in the longitudinal direction, but is not limited thereto. On the other hand, the load terminal 31 is a quick-connect terminal that can be connected by merely inserting an electric wire, and is formed in a quick-connect terminal unit 3 that is detachable from the main body 2 as shown in fig. 2.
The load terminal 31 includes modules B1 and B2 of 2 load side voltage terminals 31p arranged in the width direction, and a module B3 provided with a load side ground terminal 31e located on the installation surface side of the load side voltage terminal 31p and extending outward in the longitudinal direction. The load-side voltage terminal 31p is electrically connected to a circuit in the main body 2 via the terminal portion 32 b. On the other hand, the load-side ground terminal 31e (a conductor constituting the interior of a terminal described later) is electrically connected to a ground lead 39 drawn from the side surface 3fs of the module B3 portion extending from the load-side voltage terminal 31 p.
When the circuit breaker 1 is installed on the tray, the load-side ground terminal 31e is grounded by connecting the ground lead 39 to the ground terminal 90 installed on the tray. Therefore, the ground wiring of the load device can be easily performed only by inserting the load-side ground line into the load-side ground terminal 31e close to the load-side voltage terminal 31 p. Further, since the grounding lead 39 has flexibility, when the grounding terminals 91 and 92 of different systems are present in the disk, a desired system of grounding terminals can be selected and grounded.
Next, the details of the quick-coupling terminal unit 3 will be described, but the configuration of the parts other than the parts related to the quick-coupling terminal unit 3 (for example, the opening/closing mechanism, the trip mechanism, and the like built in the main body portion 2) is the same as that of a normal circuit breaker, and the description of the parts will be omitted. The circuit breaker 1 may be referred to as a breaker that detects overcurrent and leakage and breaks the circuit or a leakage breaker, but may be simply referred to as a switch that opens and closes.
As shown in fig. 3, the main body 2 is formed of a frame member made of insulating resin divided in the width direction (vertical direction in the drawing) as a center base 28a, a cover left 28b, and a cover right 28c, and houses therein an opening/closing mechanism portion (not shown). The handle 23 interlocked with the opening/closing mechanism portion is projected from the frame portion and is operated by hand from the outside. As shown in fig. 2, the fastening member 24 for mechanically fixing the quick connection terminal unit 3 and electrically connecting the load-side voltage terminal 31p is arranged at the end of the load side. As the fastening member 24, similarly to a terminal for ordinary wiring, a terminal plate may be fastened by a terminal screw. The tightening members 24 are arranged in the width direction, but are formed in a stepped shape such that the right tightening member 24 is located closer to the operation surface 1fo than the left tightening member 24 in order to avoid interference with the contact signal output lead 25 drawn out from the right side of the end on the load side.
As shown in fig. 4 and 5, the quick connection terminal unit 3 has the same structure for 2 load side voltage terminals 31p, 1 load side ground terminal 31e, and respective modules B1 to B3, and is configured by grouping 3 modules B1 to B3. The housing that houses these 3 mechanism parts is configured by 3 housing members made of insulating resin divided in the width direction, as shown in fig. 3 and 6, such as a unit center base 38a, a unit cover left 38b, and a unit cover right 38 c.
In each of the modules B1 to B3, insertion holes 3a for inserting the electric wires 80 are opened obliquely in the longitudinal direction with respect to the operation surface 1 fo. Further, a terminal member 32 (fig. 7) is provided for contact with the inserted electric wire 80, and the terminal member 32 has an electric wire connection surface 32a disposed on the back side of the insertion hole 3 a. However, the terminal member 32 shown in fig. 7 is used for the mechanism of the load-side voltage terminal 31p of the module B1. When the mechanism of the load-side voltage terminal 31p of the module B2 is used, a structure is used in which the position of the terminal portion 32B is located on the upper side in the thickness direction in accordance with the step of the fastening member 24. Since the load-side ground terminal 31e of the module B3 is not connected to the main body, the terminal portion 32B does not need to have a U-shape as shown in the drawing, and the number of component types is reduced, so that the same configuration as that of the load-side voltage terminal 31p of the module B2 is used.
Further, the following 3 members are incorporated in order to show the electrical connection between the inserted electric wire 80 and the terminal member 32, and the holding and holding state of the electric wire 80. First, the elastic member 33 (fig. 8) is configured by integrating a pressure contact spring portion 33b and a lock spring portion 33a, the pressure contact spring portion 33b is opposed to the wire connection surface 32a to press the wire against the terminal member 32, and the lock spring portion 33a is opposed to the wire connection surface 32a similarly to the pressure contact spring portion 33b to restrict the wire 80 from being pulled out in the removal direction. Second, the connection display button 34 (fig. 9) is molded from resin, and has a display surface 34f for displaying the connection state of the electric wire 80 at positions above and below the display hole 3h, a press-fitting portion 34a for pressing the lock spring portion 33a, and a latch engaging portion 34b. Third, a latch 36 (fig. 10) having a wire receiving portion 36a for receiving the inserted wire 80; and a latch portion 36b which engages with the latch engaging portion 34b when the electric wire 80 is not inserted and releases the engagement when the electric wire 80 is inserted.
The connection display button 34 is slidably fitted into the display hole 3h as shown in fig. 5, and is biased in the upward direction by a connection display spring 35. As shown in fig. 6, the latch 36 is fitted into the pin 38p of the housing member, and is biased in a direction of engaging with the connection display button 34 by the latch spring 37 fitted into the pin 38q of the housing member.
As shown in fig. 5, the terminal portion 32b of the terminal member 32 used in the mechanism of the load-side ground terminal 31e among the 3 mechanisms has one end electrically connected to a terminal 3t for connecting a ground lead 39 exposed from the side surface 3 fs.
Next, the operation of the quick-connection terminal unit 3 in the circuit breaker 1 according to embodiment 1 will be described with reference to fig. 5 and 6.
When the electric wire 80 with the coating layer removed is inserted from the insertion hole 3a, the electric wire 80 is inserted until it abuts against the electric wire stopper 38s of the base 38a in the unit. At this time, the tip end portion of the locking spring portion 33a bites the electric wire 80, thereby preventing the electric wire 80 from being pulled out in the detaching direction. The wire 80 is pressed against the wire connection surface 32a of the terminal member 32 located at the opposite position by the spring force of the pressure contact spring portion 33 b.
When the wire 80 is pressed by the pressure contact spring portion 33b, the wire receiving portion 36a of the latch 36 is pushed in by the tip portion 80t, the latch 36 rotates clockwise in the figure about the latch shaft (pin 38 p), and the engagement with the latch engaging portion 34b of the connection display button 34 is released. As a result, the connection display button 34 moves to the connection display stopper 38d of the base 38a of the unit by the biasing force of the connection display spring 35. This allows the wire 80 to be displayed in a wired state.
In the wired state, when the connection display button 34 is pushed in by a tool or the like, if the lock spring pushing portion 34a of the connection display button 34 pushes the lock spring portion 33a in and the tip portion of the lock spring portion 33a is separated from the electric wire 80, the electric wire 80 can be pulled out and detached. When the electric wire 80 is detached, the electric wire 80 is not pushed in, and thus the electric wire receiving portion 36a of the latch 36 is returned to the original position by the biasing force of the latch spring 37. Therefore, if the press-fitting to the connection display button 34 is removed, the latch engaging portion 34b of the connection display button 34 engages with the latch 36, and the state is returned to the original state before the wire connection.
That is, the combination of the latch 36 and the elastic member 33 constitutes a holding mechanism for grasping the electric wire 80 and electrically connecting the electric wire to the terminal member 32, and the connection indication button 34 mainly constitutes a releasing mechanism for releasing the holding by moving the latch 36 by a mechanical operation. As described above, in each of the 3 modules B1 to B3, a space for inserting the electric wire 80 is required in addition to a space for disposing a mechanism member for holding and releasing the inserted electric wire 80. In addition, the circuit breaker 1 disposed in the tray is supposed to be disposed in close contact with a plurality of circuit breakers in the width direction, and is basically inaccessible from the side. Therefore, each of them requires a minimum volume, and a certain area that does not overlap with the plane parallel to the operation surface 1fo is required.
As described above, in each of the 3 modules B1 to B3, a space for inserting the electric wire 80 is required in addition to an arrangement space of a mechanism member for holding and releasing the inserted electric wire 80. In addition, the circuit breaker 1 disposed in the tray is supposed to be disposed in close contact with a plurality of circuit breakers in the width direction, and is basically inaccessible from the side. Therefore, each of them requires a minimum volume, and a certain area that does not overlap with the plane parallel to the operation surface 1fo is required.
Here, the load-side voltage terminals 31p need to be arranged in the width direction in the same manner as other circuit breakers in order to prevent erroneous wiring and the like. On the other hand, in a circuit breaker in which a plurality of circuit breakers are supposed to be arranged in parallel in a tray, it is not allowable to increase the width so that a large number of circuit breakers can be mounted. Therefore, the load-side ground terminal 31e, which is desired to be provided for simplification of wiring work, cannot be arranged in line with the load-side voltage terminal 31p in the width direction, and needs to be provided so as to protrude in the vertical direction from the load-side voltage terminal 31 p.
Therefore, each of the modules B1 to B3 is formed in a substantially box shape elongated in the thickness direction and the longitudinal direction, so that a surface parallel to the operation surface 1fo and a surface of the upper half portion of the longitudinal end portion can be used for access and display. The front surface (operation surface 1 fo) side display surface 34f is exposed at a portion close to the main body 2, and the insertion hole 3a is opened at a middle portion in the thickness direction of a surface away from the main body 2. Based on the above-described conditions, 2 (load-side voltage terminal 31 p) modules B1 and B2 out of the 3 modules B1 to B3 are arranged in the width direction on the operation surface 1fo side. Further, the remaining 1 (load side ground terminal 31 e) module B3 is configured to be connected to the lower half portion of one (module B1) of the 2 modules.
At this time, the module B3 is disposed so as to maintain the space at the lower portion of the modules B1 and B2 in the thickness direction and to provide a step in the thickness direction with respect to the module B1. Thus, the electric wire 80 inserted into the load-side voltage terminal 31p can be prevented from interfering with the insertion of the electric wire 80 into the load-side ground terminal 31e and the moving wire during the operation of connecting the display button 34.
That is, 2 of the modules B1 to B3 formed in a box shape (the load-side voltage terminal 31 p) are arranged in the width direction on the operation surface 1fo side, and the remaining 1 (the load-side ground terminal 31 e) is connected to the lower half of one of the 2 modules. As a result, as shown in fig. 4 and 5, the quick connection terminal unit 3 and the body 2 are formed in an arch shape spanning the space 1 s. As shown in fig. 3, the load-side ground terminal 31e is linearly arranged in the vertical direction and one of the 2 load-side voltage terminals 31p, and a space outside the other in the vertical direction is free. Thus, the contact signal output lead 25 drawn out from the main body 2 can be guided to another device in the tray without interfering with the module B3 constituting the load-side ground terminal 31 e.
Here, the terminal 3t from which the grounding lead wire 39 electrically connected to the load-side grounding terminal 31e is drawn out is not limited to the case where it is provided on the side surface 3fs of the quick-coupling terminal unit 3 and drawn out as in the present embodiment. For example, the same applies to the case where the terminal 3t is provided on the inner surface 3fp surrounding the space 1s formed by the arch structure. Alternatively, if the terminal 3t is provided on the end face 3fe, the grounding lead 39 can be drawn out without any trouble.
When the circuit breaker 1 is mounted on the tray, if the grounding lead 39 is grounded to the ground terminal 90 of a desired system, only the ground line of the load-side device is connected to the load-side ground terminal 31e, and the connection to the ground terminal 90 provided on the tray is completed. Since the grounding lead 39 is flexible, when there are a plurality of grounding terminals 90 provided on the disk, the connection can be freely selected. For example, in fig. 1, the grounding lead 39 is selectively connected to any one of the grounding terminals 91 or 92 provided on the disk.
Further, by adopting the arched structure, the mounting plate can be shared without blocking the load-side exhaust port 22 (without changing the position of the mounting claws), and access to the mounting claws is facilitated. The longitudinal position of the load terminal 31 can be freely set without changing the position of the mounting claw, and thus the degree of freedom in design is improved. For example, since the position of the load terminal 31 is extended further in the load direction, a space on the side of the body 2 can be secured, and there is a possibility that a structure requiring a space such as an over-current limiting means and 2-point cutoff may be provided.
< application example >
Fig. 11 is a perspective view showing an appearance when a wiring breaker and an earth leakage breaker are arranged in parallel as an application example of a circuit breaker in which the quick-connect terminal unit 3 according to embodiment 1 of the present invention is mounted. In the figure, 3 residual current circuit breakers 1V and 1 wiring breaker 1F are disposed in close contact with each other. The grounding lead 39 led out from the earth leakage breaker 1V is connected to the ground terminal 91, and the grounding lead 39 led out from the wiring breaker 1F is connected to a system ground terminal 92 different from the ground terminal 91.
At this time, the space 1s formed by the arch structure of each circuit breaker 1 has a width (longitudinal length) corresponding to the number of modules 1 and a height (thickness direction) half of the module, and therefore, a plurality of wires and harnesses can be passed through with a large margin. That is, since the wiring duct 1sG is formed to have a length that connects the plurality of circuit breakers 1, for example, the wiring can be integrated by passing a contact signal output lead, not shown, led out from each circuit breaker 1 through the wiring duct 1sG. Further, since the adjacent portion of the load-side ground terminal 31e of the wiring duct 1sG becomes free, the wiring can be drawn out from the portion of the wiring duct 1sG corresponding to the circuit breaker 1, and the degree of freedom of wiring is high.
Further, if the terminal 3t from which the grounding lead 39 is drawn is provided on the side surface 3fs or on the surface 3fp surrounding the space 1s, the wiring duct 1sG can be used as the contact signal output lead. Of course, even when the end surface 3fe is drawn out, the wiring tube 1sG returns from the free portion as described above, and thus the wiring tube 1sG can be collected. That is, the grounding leads 39 drawn from the plurality of circuit breakers 1 can be collectively wired without using a terminating member.
Further, if a constricted portion or the like is provided in a part of the inner surface of the arched structure surrounding the space 1s, for example, a pipe material having a semicircular, U-shaped, V-shaped cross section or the like can be held, the performance as a pipe can be further improved.
As described above, according to the quick-connection terminal unit 3 according to embodiment 1 of the present invention, the quick-connection terminal unit 3 is configured such that the quick-connection terminal unit 3 is detachably formed at the end portion on the load side of the main body (main body portion 2) of the circuit breaker 1 and is used as the load terminal 31 of the circuit breaker 1, and the quick-connection terminal unit 3 includes 3 quick-connection terminals each including: an insertion hole 3a that is opened so that the electric wire 80 is inserted from the operation surface 1fo side of the circuit breaker 1; an electric wire holding mechanism which performs a holding operation including grasping of the electric wire 80 inserted from the insertion hole 3a and an electrical connection with the internal electrode (terminal member 32) by a combination of the elastic member 33 and the latch 36; and a release mechanism having an operation portion (display surface 34 f) disposed so as to be mechanically operable from the operation surface 1fo side, for releasing the holding operation in association with the mechanical operation by causing the latch 36 to be interlocked with the mechanical operation, wherein 2 quick-connection terminals (load-side voltage terminals 31 p) out of the 3 quick-connection terminals are configured such that the terminal member 32 is electrically connected to the electrode (fastening member 24) of the main body portion 2 when mounted on the main body portion 2, and the remaining quick-connection terminals (load-side ground terminals 31 e) are configured such that the terminal member 32 is electrically connected to a lead (grounding lead 39) led out from the quick-connection terminal unit 3 to the outside, so that if the grounding lead 39 is provided in a desired system for wiring, the grounding wiring to the desired system can be performed only by inserting the voltage line and the ground line into the quick-connection terminal (load terminal 31) close thereto when the load device wiring is connected to the circuit breaker 1, and therefore, troublesome work is not required, and the circuit breaker 1 can be operated without fear of abnormal operation or the like.
In particular, since the grounding lead 39 is configured to be led out from a surface different from the operation surface 1fo side of the quick connection terminal unit 3, wiring work can be easily performed without interference with holding and releasing operations of wiring and electric wires from load equipment.
Further, 3 quick-connection terminals (load terminals 31) are modularized (modules B1 to B3) respectively, and when viewed from the operation surface 1fo side, the modules B1 and B2 of the 2 quick-connection terminals are arranged in parallel (in the width direction) on the side close to the main body 2, and the modules B3 of the remaining quick-connection terminals are provided on the side away from the main body 2 so as to protrude from the module B1 of one quick-connection terminal out of the 2 quick-connection terminals, and therefore, it is possible to prevent erroneous recognition of the voltage line and the ground line during the wiring operation. In addition, since the mounting width is not increased, the mounting density can be increased.
The remaining modules B3 of the quick-connection terminals are arranged on the rear side (in the thickness direction) of the one module B1 of the quick-connection terminals when viewed from the operation surface 1fo side, and the body 2, the one module B1 of the quick-connection terminals, and the remaining modules B3 of the quick-connection terminals form an arch structure with respect to the surface of the body on which the body is to be installed, and therefore can be used as a wiring duct.
As described above, according to the circuit breaker 1 of embodiment 1 of the present invention, since the above-described quick connection terminal unit 3 and the main body 2 are provided, the main body 2 is formed in an elongated box shape, the opening and closing mechanism for housing electric power therein, and the power supply terminal 21 is formed at one end in the longitudinal direction and the mounting portion (the surface on which the fastening member 24 is provided) for detachably mounting the quick connection terminal unit 3 is formed at the other end, even if the earth leakage breaker 1V and the wiring breaker 1F are mixed, a troublesome wiring operation is not required, and there is no fear of an abnormal operation or the like.
Claims (4)
1. A quick connection terminal unit detachably formed at a load-side end of a main body of a circuit breaker and used as a load terminal of the circuit breaker,
the quick-connect terminal unit is characterized in that,
has 3 quick-connect terminals, each of the 3 quick-connect terminals having:
an insertion hole that is opened so that an electric wire is inserted from an operation surface side of the circuit breaker;
an electric wire holding mechanism which performs holding of the electric wire inserted from the insertion hole and holding operation including electric connection with the internal electrode by a combination of an elastic member and a latch; and
a release mechanism having an operation portion disposed so as to be mechanically operable from the operation surface side, the release mechanism releasing the holding operation by interlocking the latch with the mechanical operation,
2 quick-connect terminals among the 3 quick-connect terminals are configured to electrically connect the internal electrode with an electrode of the main body when the internal electrode is mounted on the main body,
the other quick-connection terminals are configured to electrically connect the internal electrode to a lead wire led out from the quick-connection terminal unit to the outside,
the 3 quick-connect terminals are each modularized, and,
the modules of the 2 quick connection terminals are arranged in parallel on the side close to the main body when viewed from the operation surface side,
the remaining modules of the quick-connection terminals protrude from the module of one quick-connection terminal of the 2 quick-connection terminals, and are disposed on a side away from the main body.
2. The quick-connect terminal unit according to claim 1,
the lead wire is configured to be led out from a surface of the quick connection terminal unit different from the operation surface side.
3. The quick-connect terminal unit according to claim 1,
the other modules of the quick-coupling terminals are arranged at a rear side of the one module of the quick-coupling terminals when viewed from the operation surface side, and the main body, the one module of the quick-coupling terminals, and the other modules of the quick-coupling terminals form an arch structure with respect to a surface of the main body to which the main body is to be installed.
4. A circuit breaker, comprising:
the quick-connect terminal unit of any one of claims 1 to 3; and
and a main body formed in a long box shape, housing therein an opening and closing mechanism for electric power, and having a power supply terminal formed at one end in a longitudinal direction and a mounting portion formed at the other end for detachably mounting the quick-connection terminal unit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-086470 | 2018-04-27 | ||
| JP2018086470A JP6937721B2 (en) | 2018-04-27 | 2018-04-27 | Fast-connect terminal unit and circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110416032A CN110416032A (en) | 2019-11-05 |
| CN110416032B true CN110416032B (en) | 2022-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920549536.7U Withdrawn - After Issue CN209607682U (en) | 2018-04-27 | 2019-04-22 | Quick-connection terminal unit and circuit-breaker |
| CN201910323568.XA Active CN110416032B (en) | 2018-04-27 | 2019-04-22 | Quick connection terminal unit and circuit breaker |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920549536.7U Withdrawn - After Issue CN209607682U (en) | 2018-04-27 | 2019-04-22 | Quick-connection terminal unit and circuit-breaker |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6937721B2 (en) |
| CN (2) | CN209607682U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6937721B2 (en) * | 2018-04-27 | 2021-09-22 | 三菱電機株式会社 | Fast-connect terminal unit and circuit breaker |
| WO2020188796A1 (en) * | 2019-03-20 | 2020-09-24 | 三菱電機株式会社 | Quick-connection terminal unit and circuit breaker |
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| JPH05128959A (en) * | 1991-10-31 | 1993-05-25 | Fuji Electric Co Ltd | Connection unit of thermal relay |
| JPH10106424A (en) * | 1996-09-27 | 1998-04-24 | Kawamura Electric Inc | Earth leakage breaker |
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| JP2001126607A (en) * | 1999-10-26 | 2001-05-11 | Fuji Electric Co Ltd | Additional function unit for branch circuit breaker |
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| CN101414529A (en) * | 2007-10-17 | 2009-04-22 | 三菱电机株式会社 | Inserting circuit breaker |
| CN101976642A (en) * | 2010-11-24 | 2011-02-16 | 戴英夫 | Earth leakage circuit breaker with extended line |
| JP2016127791A (en) * | 2014-12-26 | 2016-07-11 | パナソニックＩｐマネジメント株式会社 | Switch and distribution board |
| CN209607682U (en) * | 2018-04-27 | 2019-11-08 | 三菱电机株式会社 | Quick-connection terminal unit and circuit-breaker |
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| JPH0537393Y2 (en) * | 1986-12-15 | 1993-09-21 | ||
| JP3422199B2 (en) * | 1996-12-19 | 2003-06-30 | 松下電工株式会社 | Quick connection terminal device |
| JP2007287708A (en) * | 2007-08-08 | 2007-11-01 | Fuji Electric Fa Components & Systems Co Ltd | Attached alarm unit of branch circuit breaker |
| JP6601767B2 (en) * | 2015-11-30 | 2019-11-06 | パナソニックＩｐマネジメント株式会社 | Switch and distribution board |
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2018
- 2018-04-27 JP JP2018086470A patent/JP6937721B2/en active Active
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2019
- 2019-04-22 CN CN201920549536.7U patent/CN209607682U/en not_active Withdrawn - After Issue
- 2019-04-22 CN CN201910323568.XA patent/CN110416032B/en active Active
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| JPH05128959A (en) * | 1991-10-31 | 1993-05-25 | Fuji Electric Co Ltd | Connection unit of thermal relay |
| JPH10106424A (en) * | 1996-09-27 | 1998-04-24 | Kawamura Electric Inc | Earth leakage breaker |
| JPH1189018A (en) * | 1997-09-05 | 1999-03-30 | Mitsubishi Electric Corp | Installing structure of breaker for distribution board wiring |
| JP2000222997A (en) * | 1999-01-29 | 2000-08-11 | Matsushita Electric Works Ltd | Plug-in terminal |
| JP2001126607A (en) * | 1999-10-26 | 2001-05-11 | Fuji Electric Co Ltd | Additional function unit for branch circuit breaker |
| EP1124286A1 (en) * | 2000-02-10 | 2001-08-16 | Hager Electro S.A. | Disconnectable terminal block for a modular electrical apparatus |
| CN101015103A (en) * | 2004-09-08 | 2007-08-08 | 西门子公司 | Switching system comprising switchgear that can be contacted via pin contacts |
| JP2006230134A (en) * | 2005-02-18 | 2006-08-31 | Nitto Electric Works Ltd | Plug-in adapter |
| JP2007149584A (en) * | 2005-11-30 | 2007-06-14 | Kawamura Electric Inc | Circuit breaker |
| CN101123154A (en) * | 2006-08-10 | 2008-02-13 | 三菱电机株式会社 | Circuit breaker |
| CN101202184A (en) * | 2006-11-21 | 2008-06-18 | 河村电器产业株式会社 | Circuit breaker |
| CN101414529A (en) * | 2007-10-17 | 2009-04-22 | 三菱电机株式会社 | Inserting circuit breaker |
| CN101976642A (en) * | 2010-11-24 | 2011-02-16 | 戴英夫 | Earth leakage circuit breaker with extended line |
| JP2016127791A (en) * | 2014-12-26 | 2016-07-11 | パナソニックＩｐマネジメント株式会社 | Switch and distribution board |
| CN209607682U (en) * | 2018-04-27 | 2019-11-08 | 三菱电机株式会社 | Quick-connection terminal unit and circuit-breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6937721B2 (en) | 2021-09-22 |
| JP2019192577A (en) | 2019-10-31 |
| CN110416032A (en) | 2019-11-05 |
| CN209607682U (en) | 2019-11-08 |
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