CN106206181B - Circuit-breaker - Google Patents

Abstract

The present invention provides a kind of replacement for the accessory switch (alarm contact, auxiliary switch) that can simply carry out changing based on specification, and the circuit-breaker of the reduction of production unit cost can be realized by realizing the sharing of the part other than accessory switch.The switching mechanism (11) and over current trip (12) of the opening and closing operations of fixed contact (8), movable contact (9), progress movable contact are accommodated in shell (4) outside the main body, is formed with switch mounting opening (13) on shell outside the main body.It is detachably arranged any one of auxiliary switch (20) and alarm contact (30) in switch mounting opening, wherein auxiliary switch is linked with switching mechanism to detect the discrete state of fixed contact and movable contact, and alarm contact detected the tripped condition of the switching mechanism of the action based on current trip arrangement.

Description

Circuit-breaker

Technical field

The present invention relates to the small electricals that circuit brake for the equipment protection for being suitable for low-voltage distribution system etc. is object Circuit breaker.

Background technology

With circuit brake etc. in the circuit-breaker of object, using auxiliary switch or alarm contact as accessory switch and The switch of carrying is well known (such as patent document 1).

The circuit-breaker of patent document 1 is packed into fixed contact, movable contact, switching mechanism, excessively electric in shell outside the main body Flow tripgear and accessory switch.

Auxiliary switch and alarm contact as accessory switch have the microswitch being installed in switch housing, group assembly The actuation mechanism of action linkage in switch housing and with switching mechanism.

Auxiliary switch is assembled in the circuit-breaker in main body cover, becomes the operation by operation handle, opening/closing machine Structure is acted and movable contact is made to become the state for contacting or detaching with fixed contact, but the actuation mechanism of auxiliary switch is logical It crosses and links with switching mechanism, microswitch is using the on-off state of circuit-breaker as electric signal output.

In addition, alarm contact is assembled in the circuit-breaker in main body cover, if the main circuit terminal of load-side with Overcurrent is generated between the main circuit terminal of mains side, then by the action of over current trip, unlocks the lock of switching mechanism, Movable contact is moved to the direction detached with fixed contact and becomes tripped condition.Actuation mechanism by alarm contact with open Mechanism linkage is closed, microswitch is using the tripped condition of circuit-breaker as electric signal output.

Existing technical literature

Patent document

Patent document 1：Japanese Unexamined Patent Publication 2002-298717 bulletins

Invention content

The subject that the invention solves

But the circuit-breaker of patent document 1 is (such as alert because of an accessory switch in alarm contact and auxiliary switch Report switch) it is assembled integrally with main body cover, so cannot carry out (such as assisting with the other accessory switch changed based on specification Switch) replacement.Therefore, it is necessary to manufacture the dedicated circuit-breaker of alarm contact and the dedicated circuit-breaker of auxiliary switch.

In addition, the alarm contact of patent document 1 is equipped with terminal board at three on switch housing, as built-in microswitch Contact form, have three kinds of normally opened contact form, normally-closed contact form and transfer contact form.In addition, the fine motion of auxiliary switch Similarly there are three types of contact forms for switch.

In this way, because of the different dedicated circuit-breaker of a variety of alarm contacts of the contact form that must manufacture microswitch and The dedicated circuit-breaker of auxiliary switch, so the production unit cost of circuit-breaker increases suddenly.

Then, the present invention is to develop in view of the foregoing, and its purpose is to provide a kind of circuit-breakers, can The replacement of the accessory switch (alarm contact, auxiliary switch) changed based on specification is simply carried out, and can be by realizing attached open The reduction that is shared and can realizing production unit cost of component other than pass.

A technical solution to solve project

To achieve the goals above, the present invention provides a kind of circuit-breaker, is accommodated with fixed touch in shell outside the main body The switching mechanism and over current trip of the opening and closing operations of head, movable contact, progress movable contact, form on shell outside the main body There is switch mounting opening.Also, it is detachably arranged auxiliary switch and appointing in alarm contact in switch mounting opening One, wherein auxiliary switch link to detect the discrete state of fixed contact and movable contact, alarm contact inspection with switching mechanism Survey the tripped condition of the switching mechanism of the action based on over current trip.

Invention effect

Circuit-breaker according to the present invention is capable of providing a kind of circuit-breaker, is being formed in opening for main body cover It closes mounting opening and is detachably arranged the discrete state for detecting fixed contact and movable contact with switching mechanism linkage Any one of the alarm contact of tripped condition of switching mechanism that auxiliary switch and detection are acted based on over current trip, So when specification changes, the replacement of accessory switch (alarm contact, auxiliary switch) can be simply carried out, and pass through realization The reduction that is shared and realizing production unit cost of component other than accessory switch.

Description of the drawings

Fig. 1 (a) indicates that the circuit-breaker for being equipped with auxiliary switch, Fig. 1 (b) indicate that the circuit for being equipped with alarm contact is disconnected Road device.

Fig. 2 is the figure for the circuit-breaker for indicating to be equipped with auxiliary switch from side.

Fig. 3 is the stereogram for indicating to have removed the state of auxiliary switch from main body cover.

Fig. 4 is the sectional view for indicating to have removed the state of auxiliary switch from main body cover.

Fig. 5 is the figure for the structure for indicating auxiliary switch.

Fig. 6 is the sectional view for the circuit-breaker for being equipped with auxiliary switch.

Fig. 7 is the sectional view of the major part for the circuit-breaker for indicating to be equipped with auxiliary switch.

Fig. 8 is the figure for the structure for indicating alarm contact.

Fig. 9 is the sectional view for indicating to have removed the state of alarm contact from main body cover.

Figure 10 is the sectional view for the circuit-breaker for being equipped with alarm contact.

Figure 11 is the sectional view of the major part for the circuit-breaker for indicating to be equipped with alarm contact.

Figure 12 is the sectional view for indicating to have removed the state of cover from main body cover.

Specific implementation mode

Illustrate the first embodiment of the present invention with reference to the accompanying drawings.It is same or like in the record of attached drawing below Part add same or similar symbol.However it should be noted that attached drawing is schematically to scheme, the pass of thickness and planar dimension System, each layer the ratio of thickness etc. with it is actual different.Therefore, specific thickness and size should refer to the following description Judged.In addition, also including attached drawing mutual size relationship and ratio also different part each other certainly.

In addition, first embodiment as shown below is the device illustrated for embodying the technical thought of the present invention With the embodiment of method, technical thought of the invention is not by restrictions such as the materials, shape, structure, configuration of component parts For the meaning of following the description.The technical thought of the present invention can have each in the technical scope of claimed range defined Kind change.

[structure about circuit-breaker]

As shown in Fig. 1 (a), (b), the circuit-breaker 1 of first embodiment includes：Main part 2 is removably set to Main part 2 as accessory switch auxiliary switch 20 (referring to Fig.1 (a)), be removably set to main part 2 conduct it is attached The alarm contact 30 (referring to Fig.1 (b)) of switch.

[structure of main part]

As shown in Figures 2 and 3, main part 2 includes by dividing shell 4a and the the first of two segmenting structure of width direction The main body cover 4 that two segmentation shell 4b are constituted, the top of shell 4 is configured with operation handle 5 outside the main body.Main body cover 4 pass through by First segmentation shell 4a and the second segmentation shell 4b are formed using the rivet 4c integrations penetrated through in the direction of the width.

Outside the main body on shell 4, it is provided with the main circuit terminal plate 6a of load-side and the main circuit end of mains side as shown in Figure 4 Daughter board 7a is equipped with clamped nipple 6b, 7b on these main circuit terminal plates 6a, 7a.

Here, as shown in Fig. 2, the main circuit terminal plate 6a of load-side be formed in main body cover 4 by the one of width direction The position of side (left side of Fig. 2).

As shown in Figure 3 and Figure 4, relative to the main circuit terminal plate 6a of load-side on the main body cover 4 of upper position shape Mounting opening 13 is switched at having, the shape on the lower part edge than switch the mounting opening 13 on the lower main body cover 4 of position Top and the hinge guide part 14 that linearly extends in the direction of the width are projected at having.In addition, in close switch construction opening The inner wall of the main body cover 4 of the top edge in portion 13, which is formed with, projects to lower section and engaging protrusion portion extended in the direction of the width 15。

As shown in figure 3, the top of shell 4 is configured with operation handle 5, the inside of shell 4 outside the main body, such as Fig. 4 institutes outside the main body Show, the flexible lead being built-in between fixed contact 8, movable contact 9, connection movable contact 9 and the main circuit terminal 7 of mains side 10, the over current trip 12 of switching mechanism 11 and solenoid type.

Moreover, as shown in figure 4, being integrally linked on movable contact 9 with the auxiliary of aftermentioned auxiliary switch 20 with actuating The movable contact side lever 16 that device mechanism 21 engages, also, it is linked on switching mechanism 11 police with aftermentioned alarm contact 30 The socket 17 that report is engaged with actuation mechanism 31.

[structure about auxiliary switch]

In the following, illustrating the auxiliary switch 20 for being removably set to main part 2 shown in Fig. 1 (a) with reference to Fig. 2~Fig. 7 Structure.

As shown in figure 5, auxiliary switch 20 have resin molded switch housing 22, be fixed on it is micro- on the switch housing 22 Dynamic switch 23 and auxiliary actuation mechanism 21.

As shown in Fig. 2, the front side (left side of Fig. 3) in switch housing 22 is formed with two-stage first end daughter board 24a, second end Daughter board 25a is equipped with first and second clamped nipple 24b, 25b on first and second terminal board 24a, 25a.Here, two First and second terminal board 24a, 25a of grade are formed in the position of the side by width direction of switch housing 22.

As shown in Figure 3 and Figure 5, on the top of switch housing 22, rear side (right side of Fig. 5) and switch housing 22 1 are formed with Body is formed and the elastic engaging piece 26 equipped with open end 26a to front side (left side of Fig. 5) extension and front, in the elastic engaging piece The upper surface of the 26 open end sides 26a is formed with engaging recessed part 26b.

As shown in Figure 4 and Figure 5, in the lower part of switch housing 22, it is formed with the switch mounting opening with shell 4 outside the main body The concave hinge part 27 that the hinge guide part 14 that 13 periphery is formed engages.

Moreover, as shown in Fig. 2, being formed on switch housing 22 from equipped with the first and second terminal board of two-stage 24a, 25a Front towards elastic engaging piece 26 open end 26a penetrate through switch dismounting through hole 28.

The microswitch 23 that is fixed on switch housing 22 is set in rear side as shown in figure 5, be provided with button 23a in front side It is equipped with the terminal 23b being connected with conducting wire (not shown) via first and second clamped nipple 24b, 25b.

The inner contact of the microswitch 23 is set as normally opened contact form, and (contact is switched to closed form from off-state State) and normally-closed contact form (contact is switched to off-state from closed state) both contact forms one kind.

Auxiliary actuation mechanism 21 has the first arm 21a and the second arm 21b of the extension of generally L-shaped shape, connection first The bending section 21c of arm 21a and the second arm 21b, bending section 21c are rotatably freely supported on the width direction in switch housing 22 It is upper extension and in fixed rotary shaft 29.In addition, the second arm 21b is to configuring the compression helical spring on switch housing 22 21d applies the clockwise power around rotary shaft 29.

Moreover, when auxiliary actuation mechanism 21 the first arm 21a and the second arm 21b Fig. 5 clockwise direction around rotation When shaft 29 rotates, the button 23a of the second arm 21b pressing microswitch 23, under normally opened contact form, contact is from off-state It is switched to closed state, under normally-closed contact form, contact is switched to off-state from closed state.

[about the method that auxiliary switch is installed on main part]

In the following, the method for illustrating the auxiliary switch 20 of above-mentioned composition being installed on main part 2 with reference to Fig. 4~Fig. 6.

The main part 2 of Fig. 4 and Fig. 6 is set as the action of switching mechanism 11 and makes the moving contact 9a of movable contact 9 and consolidate Connection (ON) state of the fixed contact 8a contacts of fixed contact 8.

First, as shown in figure 4, the hinge part 27 that will be formed in the lower part of switch housing 22 is positioned in the hinge of main body cover 4 On chain guide part 14.Then, it is center of rotation with hinge part 27, makes auxiliary switch 20 to switch 13 1 sidesway of mounting opening It is dynamic.

When the switch housing 22 of auxiliary switch 20 is moved to 13 side of switch mounting opening, it is set to switch housing 22 Top elastic engaging piece 26 pass through and be formed in switch mounting opening 13 near main body cover 4 engaging protrusion portion 15 Engaging and to downside flexible deformation.Then, in the state that engaging recessed part 26b is embedded into engaging protrusion portion 15, elastic engaging piece 26 to upside elastic recovery, thus as shown in fig. 6, auxiliary switch 20 is installed in switch mounting opening 13.

Moreover, the circuit-breaker 1 for being equipped with auxiliary switch 20 in main part 2, as shown in fig. 6, with ON states First arm of 9 integrated movable contact side lever 16 of movable contact and the auxiliary actuation mechanism 21 for constituting auxiliary switch 20 21a engages.

[about the method for removing auxiliary switch from main part]

In the following, illustrating to remove the auxiliary switch 20 for being installed on main part 2 from switch mounting opening 13 with reference to Fig. 2 and Fig. 7 Method.

First, front (being equipped with the first and second sides terminal board 24a, 25a) opening of switch housing 22 shown in Fig. 2 Switch dismounting in through hole 28, the insert extracting tools such as wire or elongated driver are (towards open end 26a shown in Fig. 7 Shown in arrow direction).Moreover, the open end by making the front end of wire or the tool of thin shape and elastic engaging piece 26 26a is abutted so that the close direction flexible deformation of microswitch 23 of the elastic engaging piece 26 in the dotted arrow direction with Fig. 7. In this way, by making 26 flexible deformation of elastic engaging piece, the state that engaging protrusion portion 15 is embedded in engaging recessed part 26b is released, auxiliary is opened 20 are closed to be removed from switch mounting opening 13.

[structure about alarm contact]

In the following, illustrating the alarm contact 30 for being removably set to main part 2 shown in Fig. 1 (b) with reference to Fig. 8~Figure 11 Structure.In addition, adding identical symbol simultaneously in composition part identical with Fig. 2~structure of auxiliary switch shown in fig. 7 20 The description thereof will be omitted.

As shown in figure 8, the fine motion that alarm contact 30 has resin molded switch housing 22, is fixed on the switch housing 22 Switch 33 and alarm actuation mechanism 31.

As shown in figure 8, the microswitch 33 for being fixed on the switch housing 22 of alarm contact 30 is provided with button in front side 33a is provided with the terminal 33b being connected with conducting wire (not shown) via first and second clamped nipple 24b, 25b in rear side.

The inner contact of the microswitch 33 is set as in the form of normally opened contact that (contact is switched to closed form from off-state State) and normally-closed contact form (contact is switched to off-state from closed state) both contact forms in one kind.

As shown in figure 8, alarm actuation mechanism 31 includes：Rotary shaft 29, in the width direction of switch housing 22 Extend and is fixed；First arm 31a, is formed as reverse U shape shape, and one end is rotatably freely supported by rotary shaft 29；Second Arm 31b is integrally attached to the other end of the first arm 31a, is upwardly extended in the side far from one end；Third arm 31c, It is integrally attached to the one end of the first arm 31a, extends to the sides button 33a of microswitch 33.In addition, 31c pairs of third arm It is configured at clockwise power of the compression helical spring 31d applications around rotary shaft 29 of switch housing 22.

Moreover, when alarm actuation mechanism 31 the first arm 31a and third arm 31c Fig. 8 clockwise direction around rotation When shaft 29 rotates, the button 33a of third arm 31c pressing microswitch 33, under normally opened contact form, contact is from off-state It is switched to closed state, under normally-closed contact form, contact is switched to off-state from closed state.

[about the method that alarm contact is installed on main part]

In the following, the method for illustrating the alarm contact 30 of above-mentioned composition being installed on main part 2 with reference to Fig. 8~Figure 10.

First, as shown in figure 9, the hinge part 27 that will be formed in the lower part of the switch housing 22 of alarm contact 30 is positioned in master On the hinge guide part 14 of body case 4.Make alarm contact 30 to switch mounting opening moreover, being center of rotation with hinge part 27 It moves 13 sides.

When the switch housing 22 of alarm contact 30 is moved to 13 side of switch mounting opening, it is set to switch housing 22 Top elastic engaging piece 26 because be formed in switch mounting opening 13 near main body cover 4 engaging protrusion portion 15 block Close and to downside flexible deformation.Moreover, in the state that engaging protrusion portion 15 is embedded into engaging recessed part 26b, elastic engaging piece 26 To upside elastic recovery, as a result, as shown in Figure 10, alarm contact 30 is installed in switch mounting opening 13.

Moreover, the circuit-breaker 1 of alarm contact 30 is equipped with for main part 2, as shown in Figure 10, with opening for ON states The socket 17 for closing the connection of mechanism 11 engages with the second arm 31b for constituting alarm actuation mechanism 31.

[about the method for removing alarm contact from main part]

In the following, illustrating to remove the alarm contact 30 for being installed on main part 2 from switch mounting opening 13 with reference to Fig. 2 and Figure 11 Method.

First, to the switch dismounting of the front opening of the switch housing 22 of alarm contact 30 with through hole 28 (with reference to Fig. 2) In, insert extracting tool along towards arrow direction shown in open end 26a shown in Figure 11.Then, by by extracting tool Front end abutted with the open end 26a of elastic engaging piece 26, make elastic engaging piece 26 to the micro- of the dotted arrow direction with Figure 11 The close direction flexible deformation of dynamic switch 33.In this way, by making 26 flexible deformation of elastic engaging piece, 15 quilt of engaging protrusion portion is released The state of embedded engaging recessed part 26b, alarm contact 30 are removed from switch mounting opening 13.

[about the circuit-breaker for being mounted with auxiliary switch is arranged in disk]

In the following, to will be equipped with auxiliary switch 20 and be set in the disks such as control panel as the circuit-breaker 1 of ON states, The method being connect with ON, OFF (on-off) display device (not shown) illustrates.

First, by operation handle 5, towards front, auxiliary switch 20 is located under the posture of downside, circuit-breaker 1 is set It is placed in disk.

Then, it will be connected from the mains side wiring of outside wiring with load-side wiring in disk using clamped nipple 7b, 6b To the main circuit terminal plate 7a of the mains side of the circuit-breaker 1 and main circuit terminal plate 6a of load-side.

In addition, will be from ON, OFF display device of outside wiring in disk using first and second clamped nipple 24b, 25b Wiring be connected to first and second terminal board 24a, 25a of auxiliary switch 20.

Here, as shown in Fig. 2, the main circuit terminal plate 6a of load-side is formed in the one of the width direction of circuit-breaker 1 Side (left side), first and second terminal board 24a, 25a of auxiliary switch 20 are formed in the another of the width direction of circuit-breaker 1 Side (right side).Therefore, even if the wiring of ON, OFF display device and first and second terminal board 24a, 25a and first and second Clamped nipple 24b, 25b connection, in the load-side wiring that will be connect with the main circuit terminal plate 6a of load-side and clamped nipple 6b When tension, the wiring of ON, OFF display device also has no relations.

Moreover, be equipped with auxiliary switch 20 and be set to the circuit-breaker 1 in disk as ON states, electric current is from power supply The main circuit terminal plate 7a of side is by flexible lead 10, moving contact 9a, fixed contact 8a, fixed contact 8, overcurrent trip dress 12 breaking coil is set to flow through to the main circuit terminal plate 6a of load-side.

It (is operated shown in the dotted line of Fig. 7 when the circuit-breaker 1 from ON states as shown in Figure 7 erects operation handle 5 Handle 5), switching mechanism 11 acts and makes the moving contact 9a of movable contact 9 from the fixed contact 8a separation of fixed contact 8.

When the action linkage for erecting the movable contact 9 brought with operation handle 5, when movable contact side lever 16 rotates downwards (arrow direction of Fig. 7), the first arm of the auxiliary actuation mechanism 21 of the auxiliary switch 20 engaged with movable contact side lever 16 21a being moved also while downwards, the button 23a of the second arm 21b pressing microswitches 23 of auxiliary actuation mechanism 21.By This, for microswitch 23 when for the auxiliary switch 20 of normally opened contact form, contact is switched to closed state from off-state, for When normally-closed contact form, contact is switched to off-state from closed state, and the electric signal of microswitch 23 is shown to ON, OFF to be filled Output is set, thus the ON in ON, OFF display device display circuit breaker 1, OFF state.

[being set in disk about by the circuit-breaker for being equipped with alarm contact]

Illustrate will to be mounted with below the circuit-breaker 1 of the ON states of alarm contact 30 be set in the disks such as control panel and with The method of alarm display device connection (not shown).

Circuit-breaker 1 is set to disk by the posture operation handle 5 to be located to downside towards front and alarm contact 30 It is interior.

Then, it using clamped nipple 7b, 6b, will be connected from the mains side wiring of outside wiring with load-side wiring in disk To the main circuit terminal plate 7a of the mains side of the circuit-breaker 1 and main circuit terminal plate 6a of load-side.

It, will be from the alarm display device of outside wiring in disk in addition, using first and second clamped nipple 24b, 25b Wiring is connected to first and second terminal board 24a, 25a of alarm contact 30.

The circuit-breaker 1 is also as shown in Fig. 2, the main circuit terminal plate 6a of load-side is formed in the width of circuit-breaker 1 The side (left side) in direction is spent, first and second terminal board 24a, 25a of alarm contact 30 are formed in the width of circuit-breaker 1 The other side (right side) in direction.Therefore, even if in first and second terminal board 24a, 25a and the first and second clamped nipples It is connected with the wiring of alarm display device on 24b, 25b, will connect with the main circuit terminal plate 6a of load-side and clamped nipple 6b When the load-side wiring connect tenses, the wiring of alarm display device also has no relations.

Moreover, being equipped with alarm contact 30 when overcurrent flows through and being set to the circuit-breaker in disk as ON states When 1, detect that the over current trip 12 of overcurrent condition unlocks the lock of switching mechanism 11, movable contact 9 is solid to leaving The direction of fixed contact 8 is mobile and becomes tripped condition.

When the tripped condition, as shown in figure 11, the action with switching mechanism 11 links, and socket 17 rotates (figure upward 11 arrow direction).In this way, when socket 17 rotates upward, the alarm actuation mechanism 31 that engages with socket 17 The second arm 31b be also moved upward simultaneously, the third arm 31c of alarm actuation mechanism 31 leaves the button of microswitch 33 33a.For microswitch 33 when for the alarm contact 30 of normally opened contact form, contact is switched to closed form from off-state as a result, State, when for normally-closed contact form, contact is switched to off-state from closed state, and the electric signal of microswitch 33 is output to Alarm display device, as a result, in the tripped condition of alarm display device display circuit breaker 1.

[replacement about the accessory switch for being installed on circuit-breaker]

In the following, being changed to will be set in disk by specification change and be equipped with the circuit-breaker 1 of auxiliary switch 20 The method of alarm contact 30 illustrates.

The switch dismounting of the circuit-breaker 1 being set in disk, auxiliary switch 20 is open downward with through hole 28. In the switch dismounting in through hole 28, the extracting tools such as wire or elongated driver are inserted from downside.Moreover, by by metal The front end of tool of silk or thin shape is abutted with the open end 26a of elastic engaging piece 26, and elastic engaging piece 26 is made to be opened to fine motion It closes 23 close direction flexible deformations, releases the state that engaging protrusion portion 15 is embedded in engaging recessed part 26b, by auxiliary switch 20 from opening Mounting opening 13 is closed to remove.

Then, the hinge part 27 that will be formed in the lower part of the switch housing 22 of alarm contact 30 is positioned in main body cover 4 On hinge guide part 14, alarm contact 30 is set to be moved to 13 side of switch mounting opening for center of rotation with hinge part 27.Moreover, It is set to the elastic engaging piece 26 on the top of switch housing 22 and is formed in and switch the main body cover 4 near mounting opening 13 Engaging protrusion portion 15 engages and flexible deformation, in the state that engaging recessed part 26b is embedded in engaging protrusion portion 15, elastic engaging piece 26 To upside elastic recovery, alarm contact 30, which is installed in, as a result, switchs mounting opening 13.

In addition, changed by specification, by be set in disk and be equipped with alarm contact 30 circuit-breaker 1 replace supplemented by The case where helping switch 20 is also carried out with similarly sequence.

In addition, being changed by specification, it is changed to from the auxiliary switch 20 of the microswitch 23 with normally opened contact form It the case where auxiliary switch 20 of microswitch 23 with normally-closed contact form or is opened from the fine motion with normally-closed contact form In the case that the auxiliary switch 20 of pass 23 is changed to the replacement of auxiliary switch 20 of the microswitch 23 with normally opened contact form, It is similarly sequentially carried out according to the method with above-mentioned replacement auxiliary switch 20 and alarm contact 30.

[the case where accessory switch is not installed on circuit-breaker]

In the following, Figure 12 is to indicate not installing auxiliary switch 20 or alarm contact 30 and the only knot of mounting cup 32 in main part 2 The figure of structure.

Cover 32 is resin molded with 22 same shape of switch housing of auxiliary switch 20 and alarm contact 30 Component, upper part are formed with elastic engaging piece 26, and card is formed in the upper surface of the open end sides 26a of the elastic engaging piece 26 Close recess portion 26b.

In addition, being formed with the switch dismounting perforation towards the open end 26a perforations of elastic engaging piece 26 in the front of cover Hole (not shown).In addition, being formed with the concave hinge part engaged with the hinge guide part 14 of main body cover 4 in the lower part of cover 32 27。

It is rotation with hinge part 27 moreover, the hinge part 27 of cover 32 is positioned on the hinge guide part 14 of main body cover 4 Center makes cover 32 be moved to 13 side of switch mounting opening, the engaging near switch mounting opening 13 of elastic engaging piece 26 Protrusion 15 engages and flexible deformation.Moreover, in the state that engaging recessed part 26b is embedded into engaging protrusion portion 15, elastic engaging Thus 26 elastic recovery of piece covers 32 and is installed in switch mounting opening 13.

Here, the auxiliary that the auxiliary switch housing of the present invention is corresponding with the switch housing 22 of auxiliary switch 20, of the invention It is corresponding with first and second terminal board 24a, 35a of auxiliary switch 20 with terminal board, auxiliary microswitch of the invention with it is auxiliary The microswitch 23 of switch 20 is helped to correspond to, auxiliary hinge part of the invention is corresponding with the hinge part 27 of auxiliary switch 20, this hair Bright auxiliary is corresponding with the elastic engaging piece 26 of auxiliary switch 20 with elastic engaging portion, auxiliary through hole of the invention and auxiliary The switch dismounting of switch 20 is corresponded to through hole 28.In addition, the switch of the alarm switch housing and alarm contact 30 of the present invention Shell 22 corresponds to, and alarm terminal board of the invention is corresponding with first and second terminal board 24a, 35a of alarm contact 30, this hair Bright alarm microswitch is corresponding with the microswitch 33 of alarm contact 30, alarm hinge part of the invention and alarm contact 30 hinge part 27 corresponds to, and alarm of the invention is corresponding with the elastic engaging piece 26 of alarm contact 30 with elastic engaging portion, this hair The switch dismounting of bright alarm through hole with alarm contact 30 is corresponding with through hole 28.

[effect of the circuit-breaker about first embodiment]

Illustrate the effect of the circuit-breaker 1 of first embodiment below.

First, circuit-breaker 1 is using such as lower structure, i.e.,：The switch mounting opening 13 for being set to main body cover 4 can Removably the ON of installation detection switching mechanism 11, the auxiliary switch 20 of OFF state and detection are based on over current trip 12 Any of alarm contact 30 of tripped condition of switching mechanism 11 of action, so disconnected from the circuit with auxiliary switch 20 The case where road device 1 carries out specification change to the circuit-breaker 1 with alarm contact 30 carries out the feelings that opposite specification changes Under condition, by will be installed on the circuit-breaker 1 being arranged in the disks such as control panel auxiliary switch 20 and alarm contact 30 one Person dismantles from main part 2, and another one is installed on main part 2, can simply carry out the circuit-breaker 1 changed based on specification Auxiliary switch 20, alarm contact 30 replacement.

In addition, auxiliary switch 20 manufactures the switch of the microswitch 23 with normally opened contact form and with normally-closed contact shape The switch of the microswitch 23 of formula both, alarm contact 30 manufacture with normally opened contact form microswitch 33 switch and The switch of microswitch 33 with normally-closed contact form both.Moreover, in the first embodiment, according to specification, in master The switch mounting opening 13 of body case 4 installs any auxiliary switch 20 or therefore alarm contact 30 is enclosed with by inside The dedicated circuit-breaker of a variety of auxiliary switches of the different microswitch of contact form of existing microswitch and alarm are opened It closes dedicated circuit-breaker to compare, the production unit cost of circuit-breaker 1 can be reduced.

In addition, the accessory switch of auxiliary switch 20 and alarm contact 30 will be by that will be set to the hinge part 27 of switch housing 22 It is positioned on the hinge guide part 14 of main body cover 4, makes auxiliary switch to switch construction opening for center of rotation with hinge part 27 13 side of portion is moved, the main body for being set to the elastic engaging piece 26 of switch housing 22 and being formed near switch mounting opening 13 The engaging protrusion portion 15 of shell 4 contacts and flexible deformation.Moreover, being embedded into the engaging of elastic engaging piece 26 in engaging protrusion portion 15 In the state of recess portion 26b, 26 elastic recovery of elastic engaging piece and accessory switch can be easily attached to switch construction opening Portion 13.

In addition, when removing accessory switch, pass through the switch dismounting through hole 28 of the front opening in switch housing 22 The extracting tools such as middle insert wire or elongated driver, make 26 flexible deformation of elastic engaging piece.Engaging protrusion portion 15 is released as a result, The state of embedded engaging recessed part 26b, so as to simply dismantle accessory switch from switch mounting opening 13.

In addition, the switching that the auxiliary switch 20 and alarm contact 30 of first embodiment do not use demand few is (normally opened, normal Close) contact form (there is terminal board at three), and make, by first and second terminal board 24a, 25a at setting two, to form two kinds The contact form (normally opened contact form, normally-closed contact form) of microswitch 23,33.Moreover, as shown in Fig. 2, the master of load-side Circuit end daughter board 6a is formed in the side (left side) of the width direction of circuit-breaker 1, while auxiliary switch 20 and alarm contact First and second terminal board 24a, 25a at the two of 30 are formed in the other side (right side) of the width direction of circuit-breaker 1.Cause This, even if being connected with the wiring of ON, OFF display device and alarm display device on first and second terminal board 24a, 25a The wiring of alarm display device can be made allowably to carry out connecting with the main circuit terminal plate 6a of load-side and clamped nipple 6b Load-side wiring tension operation, can be carried out efficiently the wiring operation of the circuit-breaker 1 in disk.

In addition, accessory switch (auxiliary switch 20, the alarm contact of the circuit-breaker 1 being set in the disks such as control panel 30) the switch dismounting, used when removing the accessory switch is open downward with through hole 28, and before not being set to disk Side, therefore the aesthetics of circuit-breaker 1 can also be improved.

Reference sign

1 circuit-breaker

2 main parts

20 auxiliary switches

4a first divides shell

4b second divides shell

4 main body covers

4c rivets

5 operation handles

The main circuit terminal plate of 6a load-sides

6b, 7b clamped nipple

The main circuit terminal plate of 7a mains sides

8 fixed contacts

9 movable contacts

10 flexible leads

11 switching mechanisms

12 over current trips

13 switch mounting openings

14 hinge guide parts

15 engaging protrusion portions

16 movable contact side levers

17 sockets

20 auxiliary switches

21 auxiliary actuation mechanisms

The first arms of 21a

The second arms of 21b

The bending sections 21c

21d compression helical springs

22 switch housings

23 microswitches

23a buttons

23b terminals

24a first end daughter boards

24b first terminal connectors

25a second end daughter boards

25b Second terminal connectors

26 elastic engaging pieces

The open ends 26a

26b recess portions

27 hinge parts

28 switch dismounting through holes

29 rotary shafts

30 alarm contacts

31 alarm actuation mechanisms

The first arms of 31a

The second arms of 31b

31c third arms

31d compression helical springs

32 covers

33 microswitches

33a buttons

33b terminals.

Claims (17)

1. a kind of circuit-breaker, it is characterised in that：

The switching mechanism of the opening and closing operations of fixed contact, movable contact, the progress movable contact is accommodated in shell outside the main body And over current trip, main circuit terminal plate is provided on the main body cover, on the top of the main circuit terminal plate Switch mounting opening is formed on position,

It is detachably arranged any one of auxiliary switch and alarm contact in the switch mounting opening, wherein described auxiliary Switch is helped to be linked with the switching mechanism to detect the discrete state of the fixed contact and the movable contact, the alarm is opened Close the tripped condition of the switching mechanism of action of the detection based on the over current trip.

2. circuit-breaker according to claim 1, it is characterised in that：

The auxiliary switch auxiliary with switch housing be assembled with multiple auxiliary terminal boards, auxiliary microswitch and with it is described Switching mechanism links come the auxiliary actuation mechanism for the contact change-over for carrying out auxiliary microswitch.

3. circuit-breaker according to claim 2, it is characterised in that：

The auxiliary switch of the auxiliary microswitch with normally opened contact form and the institute with normally-closed contact form It states the auxiliary switch of auxiliary microswitch both described auxiliary switches and is removably mountable to the switch installation and open Oral area.

4. circuit-breaker according to claim 2, it is characterised in that：

The auxiliary includes with switch housing：

Auxiliary hinge part is supported with the hinge guide part for the main body cover being set near the switch mounting opening It connects and is supported；With

Auxiliary elastic engaging portion, the switch mounting opening is being moved to using the auxiliary with hinge part as rotation center Elastic deformation when side and engage with the engaging protrusion portion of periphery for being set to the switch mounting opening.

5. circuit-breaker according to claim 3, it is characterised in that：

The auxiliary includes with switch housing：

Auxiliary hinge part is supported with the hinge guide part for the main body cover being set near the switch mounting opening It connects and is supported；With

Auxiliary elastic engaging portion, the switch mounting opening is being moved to using the auxiliary with hinge part as rotation center Elastic deformation when side and engage with the engaging protrusion portion of periphery for being set to the switch mounting opening.

6. circuit-breaker according to claim 4, it is characterised in that：

The auxiliary is formed in the inside of the auxiliary switch housing with elastic engaging portion,

It is formed with the auxiliary perforation penetrated through from the outside of the auxiliary switch housing towards auxiliary elastic engaging portion Hole,

Extracting tool is inserted into the auxiliary from the outside of auxiliary switch housing makes the auxiliary in through hole With elastic engaging portion flexible deformation, the engaging in the auxiliary elastic engaging portion and the engaging protrusion portion can be released.

7. circuit-breaker according to claim 6, it is characterised in that：

The extracting tool is wire or elongated driver.

8. circuit-breaker according to claim 5, it is characterised in that：

The auxiliary is formed in the inside of the auxiliary switch housing with elastic engaging portion,

It is formed with the auxiliary perforation penetrated through from the outside of the auxiliary switch housing towards auxiliary elastic engaging portion Hole,

Extracting tool is inserted into the auxiliary from the outside of auxiliary switch housing makes the auxiliary in through hole With elastic engaging portion flexible deformation, the engaging in the auxiliary elastic engaging portion and the engaging protrusion portion can be released.

9. circuit-breaker according to claim 8, it is characterised in that：

The extracting tool is wire or elongated driver.

10. according to circuit-breaker according to any one of claims 1 to 9, it is characterised in that：

The alarm contact in alarm with switch housing is equipped with multiple alarm terminal boards, alarm microswitch and described Switching mechanism carries out the alarm actuation mechanism of linkage when trip operation.

11. circuit-breaker according to claim 10, it is characterised in that：

The alarm contact of the alarm microswitch with normally opened contact form and the institute with normally-closed contact form It states the alarm contact of alarm microswitch both described alarm contacts and is removably mountable to the switch installation and open Oral area.

12. circuit-breaker according to claim 10, it is characterised in that：

The alarm includes with switch housing：

Alarm hinge part is supported with the hinge guide part for the main body cover being set near the switch mounting opening It connects and is supported；With

Alarm elastic engaging portion is being moved to the switch mounting opening using the alarm with hinge part as rotation center Elastic deformation when side and engage with the engaging protrusion portion of periphery for being set to the switch mounting opening.

13. circuit-breaker according to claim 11, it is characterised in that：

The alarm includes with switch housing：

Alarm hinge part is supported with the hinge guide part for the main body cover being set near the switch mounting opening It connects and is supported；With

Alarm elastic engaging portion is being moved to the switch mounting opening using the alarm with hinge part as rotation center Elastic deformation when side and engage with the engaging protrusion portion of periphery for being set to the switch mounting opening.

14. circuit-breaker according to claim 12, it is characterised in that：

The alarm is formed in the inside of the alarm switch housing with elastic engaging portion,

It is formed with the alarm perforation penetrated through from the outside of the alarm switch housing towards alarm elastic engaging portion Hole,

Extracting tool is inserted into the alarm from the outside of alarm switch housing makes the alarm in through hole With elastic engaging portion flexible deformation, the engaging in the alarm elastic engaging portion and the engaging protrusion portion can be released.

15. circuit-breaker according to claim 14, it is characterised in that：

The extracting tool is wire or elongated driver.

16. circuit-breaker according to claim 13, it is characterised in that：

The alarm is formed in the inside of the alarm switch housing with elastic engaging portion,

It is formed with the alarm perforation penetrated through from the outside of the alarm switch housing towards alarm elastic engaging portion Hole,

Extracting tool is inserted into the alarm from the outside of alarm switch housing makes the alarm in through hole With elastic engaging portion flexible deformation, the engaging in the alarm elastic engaging portion and the engaging protrusion portion can be released.

17. circuit-breaker according to claim 16, it is characterised in that：

The extracting tool is wire or elongated driver.