CN1661749A - Accessories for circuit breakers - Google Patents

Abstract

Provided is an auxiliary device of a circuit breaker capable of reducing slide between components as much as possible without adding a large component, and allowing either of a combination of two sets of auxiliary switches and a combination of a set of auxiliary switches and a set of alarm switches to be selected. This auxiliary device of a circuit breaker is so structured that the function of a plate spring 30 is used as an alarm or auxiliary switch by constraining or releasing motion of a rotative member S28 for moving a plate spring S30 by trip bar 8 having a simple shape; and the rotative member S28 is provided, by integral molding, with a display part 28d for displaying rotation of the rotative member S28 and a reset knob 28e for restoring the rotative member S28 to an original state.

Description

Accessories for circuit breakers

technical field

The present invention relates to a circuit breaker, and more particularly to a single-pole breaker having a single-pole switching mechanism and an overcurrent trip element, or a multi-pole breaker arranged in a stack of a plurality of the single-pole breakers. Attachment of the circuit breaker with multiple switches on the side and built-in in conjunction with the operation of the circuit breaker. Specifically, it relates to an accessory device of a circuit breaker that can output an alarm signal indicating that the circuit breaker has performed an overcurrent trip action, or an auxiliary signal indicating the conduction or non-conduction of the contacts of the circuit breaker The output switches the switching function.

Background technique

In a plurality of, for example, two sets of switches, each plate spring connected to the other end that becomes the c-contact output repeatedly performs fixed contact with the a-contact output or the b-contact output according to the operation of the circuit breaker through each rotating member. The separation of the heads separates the contacts. When the leaf spring is repeatedly separated from the fixed contact, the opening and closing mechanism of the circuit breaker or one rotating member linked to the operating handle functions as an auxiliary switch. And, if the other rotating member is not connected to the one rotating member, the opening and closing mechanism portion of the circuit breaker or the one rotating member linked to the operating handle functions as an alarm switch. In the attachment device of the conventional circuit breaker, the function switching of the other rotating member, that is, the connection and disconnection with the one rotating member is achieved by the user connecting the externally operable switching knob to the other rotating member. done in conjunction. At the same time, when the other rotating member is not connected to one rotating member, it must be pre-interposed between the third rotating member, and the third rotating member is used to transmit the overcurrent tripping action of the circuit breaker to the other rotating member. Components (such as European Laid-Open Patent Publication 106591 (paragraph numbers 0012-0018). In addition, in the aforementioned patent documents, one rotating member, the other rotating member, the third rotating member and the switching knob are respectively referred to as the rotating plate, the middle lever, display lever and selector.).

In the attachment device of the conventional circuit breaker, the connection and non-connection of the intermediate lever to the rotary plate are made by fitting the through hole of the intermediate lever with the protrusion on the selector operated from the outside, and then placing the protrusion on the The cover of the accessory device of the circuit breaker and the inner wall of the base are frictionally moved. As a result, there is a disadvantage of wear of the parts due to the sliding of the parts against each other. In addition, when the intermediate rod is not connected to the rotating plate, that is, when the intermediate rod functions as an alarm switch, the state change of the circuit breaker is transmitted to the intermediate rod to replace the rotating plate. In the opening and closing operation of the circuit breaker, a A display lever that restricts movement by engaging with the trip operation part. However, since the shape of the display lever is such that the distance between the rotation center and the connecting portion of the intermediate lever is approximately twice the distance in the vertical direction from the rotation center and the engaging portion of the trip operation portion, there is a need to add Problems with large parts.

Contents of the invention

The object of the present invention is to provide an accessory device of a circuit breaker as follows: without adding large parts, the sliding between parts can be greatly reduced, and the combination of two sets of auxiliary switches, and one set of auxiliary switches and one set of auxiliary switches can be selected. One of the combinations of alarm switches.

In the accessory device of the circuit breaker of the present invention, the movement of the other rotating member which moves the leaf spring is restrained or released by the constraining member having a simple shape, so that the leaf spring functions as an alarm or an auxiliary switch. In addition, when the switching member is set to the auxiliary switch side, when the circuit breaker is in the open state, the restricting member engages with the other rotating member, and the restricting member rotates with the other rotating member. The first engaging portion of the member is located near the rotation center of the other rotating member.

The accessory device of the circuit breaker of the present invention includes: a rotating member disposed on the side of the circuit breaker, corresponding to the position of the opening and closing mechanism part provided in the circuit breaker or the operating handle of the circuit breaker; The other rotating member is operated by the displacement of the one rotating member; one end has a movable contact, the other end is connected to the output terminal of the c-contact, and is linked with the rotation of the one and the other rotating member Plate spring; two sets of auxiliary switches for notifying the conduction and non-conduction of the contact of the circuit breaker to the outside, which include a pair of a contact output and b contact output for separating contact with the movable contact Two sets of fixed contacts of the fixed contacts, the one and the other rotating members and the leaf springs corresponding to these rotating members; The circuit breaker has the function of an alarm switch that has performed an overcurrent trip action. When the switching member is set on the alarm switch side, when the circuit breaker is in the open state, the restraining member and the other side The first engaging part of the constraining member and the other rotating member is located near the rotation center of the other rotating member. The result is an attachment of a circuit breaker which greatly reduces the sliding of the parts relative to each other without the addition of large parts.

A brief description of the drawings

Fig. 1 is a perspective view of the appearance of a circuit breaker according to an embodiment of the present invention, in which an attachment is attached to a main body.

Fig. 2A is a diagram showing the internal structure of the accessory device of the circuit breaker whose main body is in the ON state according to the embodiment of the present invention when the auxiliary switch is set.

Fig. 2B is a diagram showing the internal structure of the attachment of the circuit breaker with the body in the ON state according to the embodiment of the present invention when the alarm switch is set.

Fig. 3A is a diagram showing the internal structure of the accessory device of the circuit breaker whose main body is in the tripped state according to the embodiment of the present invention when the auxiliary switch is set.

Fig. 3B is a diagram showing the internal structure of the accessory device of the circuit breaker whose main body is in the tripped state according to the embodiment of the present invention when the alarm switch is set.

Fig. 4A is a diagram showing the internal structure of the accessory device of the circuit breaker whose main body is in the OFF state according to the embodiment of the present invention when the auxiliary switch is set.

Fig. 4B is a diagram showing the internal structure of the accessory device of the circuit breaker whose main body is in the OFF state according to the embodiment of the present invention when the alarm switch is set.

Fig. 5 is an internal structure diagram of the attachment device of the circuit breaker when the trip button is pressed in Fig. 4B.

Detailed ways

1 is an external perspective view of a circuit breaker attachment (hereinafter simply referred to as an attachment) 101 mounted on the left side of a single-pole breaker (hereinafter simply referred to as a main body) 151 . 2 to 5 are diagrams of the internal structure of the attachment 101 viewed from the direction A on the paper of FIG. 1 with the cover 1 of the attachment 101 removed. Figure 2A shows that the main body 151 is in the closed (hereinafter referred to as ON) state when the auxiliary switch is set, Figure 2B shows that the main body 151 is in the closed (hereinafter referred to as ON) state, and Figure 3A shows that the main body 151 is tripped when the auxiliary switch is set State, Figure 3B shows that the main body 151 is in the tripped state when the alarm switch is set, Figure 4A shows that the main body 151 is in the open (hereinafter referred to as OFF) state when the auxiliary switch is set, and Figure 4B shows the main body 151 when the alarm switch is set is open (hereinafter referred to as OFF) state. FIG. 5 shows the state when the trip button is pressed when the main body 151 is in the open state and the alarm switch is set.

In FIG. 1 , when an overcurrent of the circuit is detected, the switch mechanism is opened to block the overcurrent. The known operating handle 51 of the main body 151 and the handle 3 of the attachment 101 are connected by pins not shown. The handle 3 is linked to manual ON and OFF operations of the operating handle 51 . The cover body 52 of the main body 151 is also provided on the left side, and the cover body 52 is removed, and by inserting the unshown trip cam into the main body 151, the opening and closing mechanism part of the unshown main body 151 opens and closes. The displacement of the trip cam caused by the overcurrent tripping operation is transmitted to the hook 11 of the attachment 101 . As a result, the attachment 101 becomes the unlocked state like the main body 151 (see FIGS. 3A and 3B ). In addition, on the drawing surface, the upper side is the power supply side terminal 53, and the lower side is the load side terminal (not shown). The operating handle 51 and the handle 3 show an OFF state (see FIGS. 4A and 4B ). Assuming that the switch knob 5 is set to the auxiliary switch side (refer to FIG. 4B ), then in this state, by pressing the trip button 4, the contact point of the switch S103 is switched, and the not-shown switch provided at one end of the rotating member S28 The display part and the reset knob 28e move upward on the drawing (refer to FIG. 5 ).

Figure 2A and Figure 2B are the same except that the setting position of the switching knob 5 is different. As the operation handle 51 of the main body 151 (not shown) is turned ON, the handle 3 fitted in the first protrusion 2a of the base 22 rotates clockwise around the first protrusion 2a. The snap lock 10 is driven by the rotation of the handle 3, is connected with the handle 3 through the connecting rod 9, and is inserted into the third protrusion 18c of the rotating member F18. Constrained by the hook 11 of the counterclockwise force, the rotating member F18 rotates counterclockwise with the latch 14 as the center of rotation. Through this rotation, the first protrusion 18a of the rotating member F18 is connected to the terminal F22 output by the c-contact at one end. The leaf spring S30 collides, and the leaf spring F20 moves to the right on the drawing plane. At this time, the link pin 12 connecting the first protrusion 2a, the handle 3, and the link 9 and the latch pin 13 connecting the link 9 and the latch 10 are aligned on a straight line (hereinafter referred to as a line of force). When the handle 3 rotates clockwise and the position of the link pin 12 crosses the line of force, that is, the position of the link pin 12 is on the left side of the connecting line between the first protrusion 2a and the spring lock pin 13 on the drawing surface, the tension spring That is, the main spring F19 keeps the rotating member F18 at the position shown in the figure. As a result, the switch F102, which is an auxiliary switch composed of the rotating member F18, the plate spring F20, the movable contact S21, the terminal F22, the fixed contact a23, the fixed contact a24, the fixed contact b25 and the fixed contact b26, is completed. By contacting the movable contact S21 provided at the other end of the leaf spring F20 with the fixed contact a24 provided on the fixed contact a23 output by the a contact, the electrical signal indicating that the main body 151 is turned ON can be output to the outside. Hereinafter, for the sake of convenience, the a-contact output is referred to as on, and the b-contact output is referred to as off, and, as mentioned above, because the switch F102 is fixed to have the function of an auxiliary switch, in order to be consistent with the configuration switch S103 described later For the parts that make up the switch F102, etc., add the prefix F of FIXATION to the part name. In addition, the first protrusion 18a generates a contact pressure of the movable contact S21 against the fixed contact a24. The "one rotating member" mentioned in the claim refers to the aforementioned rotating member F18.

The rotation member F18 is provided with 4th protrusion part 18d. By engaging the fourth protrusion 18d with the rotating member S28 exerted clockwise by the main spring S29, which is a tension spring, the rotating member S28 also rotates counterclockwise as the rotating member F18 rotates. Rotate counterclockwise with the second protrusion 2b of the base 2 as the center of rotation. Through this rotation, the first protrusion 18a of the rotating member F18 collides with the leaf spring S30 whose one end is connected to the terminal S32 of the c-contact output. , the leaf spring S30 moves to the right on the drawing plane. The rotating member S28 is held in the illustrated position. Thus, the switching on of the switch S103 composed of the rotating member S28, the plate spring S30, the movable contact S31, the terminal S32, the fixed contact a33, the fixed contact a34, the fixed contact d35 and the fixed contact d36 is completed. The movable contact S31 provided at the other end of the plate spring S30 is in contact with the fixed contact c34 provided on the fixed contact c33 output by the a contact, and an electrical signal indicating that the main body 151 is turned ON can be output to the outside. The first protrusion 28a generates contact pressure of the movable contact S31 against the fixed contact c34. The "other rotating member" mentioned in the claim refers to the aforementioned rotating member S28.

As described above, the switch S103 is set on the auxiliary switch, that is, the arrow provided on the switching knob 5 as shown in FIG. 2A indicates a state inclined 45 degrees to the left on the drawing. As shown in FIG. 2B , the arrow provided on the switch knob 5 indicates a state inclined 45 degrees to the right on the drawing. Even when the alarm switch is set, it does not change in a series of actions, but by contacting the movable contact S31 with the fixed contact c34 provided on the fixed contact c33 of the b contact output, the main body 151 does not trip outside. That is, because the output represents the electrical signal of ON or OFF (it can be seen that the output of the aforementioned switch F102 becomes ON in this case), the action of the switch S103 is an off state. Like this, since the switch S103 can select an auxiliary switch or an alarm The function of the switch, so in order to distinguish it from the parts that constitute the switch F102 mentioned above, for the parts that constitute the switch S103, etc., the prefix S of SELECTION is also added to the name of the parts. In addition, the "switching member" mentioned in the claim refers to the aforementioned switching knob 5 .

Next, with reference to FIG. 3A and FIG. 3B , the operation of tripping the main body 151 due to overcurrent flowing to the main body 151 will be described. Figure 3A and Figure 3B are the same except that the setting position of the switching knob 5 is different. As mentioned above, with the overcurrent tripping action of the switching mechanism part of the main body 151, the unshown trip cam protruding from the main body 151 is displaced, and the hook 11 rotates the latch 14 in conjunction with the displacement. The center rotates clockwise from the position shown in Figures 2A and 2B. In this way, because the snap lock 10 releases the constraint, the holding of the rotating member F18 is released, that is, the snap lock 10 reverses from the position shown in FIGS. 2A and 2B with the third protrusion 18c of the rotating member F18 as the center of rotation. Rotate in the clockwise direction, cross the line of force, and use the main spring F19 to make the rotating member F18 rotate clockwise. The switch F102 is turned off by this rotation, that is, the second protrusion 18b of the rotating member F18 pushes the leaf spring F20 to the left on the drawing surface, and the fixed contact b25 provided on the output of the movable contact F21 and the b contact The fixed contact b26 is contacted to output an electrical signal indicating that the main body 151 is not ON (because the switch F102 is an auxiliary switch, so only the switch cannot be used to determine whether it is tripped or OFF). At the same time, the handle 3 and the connecting rod 9 are in a free state, but since the handle 3 is always forced counterclockwise by the handle spring 15, the handle 3 immediately rotates counterclockwise and becomes the OFF position as shown in the figure. , and, the snap lock 10 connected with the handle 3 through the connecting rod 9 also pushes up the hook 11 and comes to the position shown in the figure. At this time, since the hook 11 is biased counterclockwise by the hook spring 17 , the snap lock 10 is immediately restrained by the hook 11 . The second protrusion 18b generates contact pressure against the fixed contact b26 of the movable contact S21.

By the counterclockwise rotation of the handle 3, the trip lever 8 (refer to FIGS. Therefore, a clockwise rotational force with the third protrusion 2c of the base 2 as the center of rotation is generated. However, before the above-mentioned rotation is performed, since the rotation member F18 rotates clockwise, the rotation member S28 of the engagement of the rotation member F18 and the fourth protrusion 18d is released, and the main spring S29 also rotates clockwise. rotation. Thereby, the trip lever is restrained by the 3rd protrusion part 28c of the rotation member S28. When the auxiliary switch is set by the rotation of the rotating member S28, the switch S103 is turned off, that is, the second protrusion 18b of the rotating member F18 pushes the leaf spring S30 to the left on the drawing surface, and by turning The movable contact S31 is in contact with the fixed contact d36 provided on the fixed contact d35 of the b-contact output, and can output an electrical signal indicating that the main body 151 is not ON to the outside. In addition, when it is set as an alarm switch, the switch S103 is turned on, that is, the movable contact S31 is in contact with the fixed contact d36 provided on the fixed contact d35 of the a contact output, and it can be output to the outside to indicate that the main body 151 has been released. Buckle electrical signal. The second protrusion 28b generates a contact pressure of the movable contact S31 against the fixed contact d36. In addition, the "second engaging part" mentioned in the claims refers to the engaging part between the first protrusion 8a of the trip lever 8 and the concave part 3a of the handle 3, and the "restraining member" refers to the above-mentioned tripping part. pole 8.

When the rotating member S28 rotates in the clockwise direction, the display portion 28d provided at one end of the rotating member S28 moves downward on the drawing surface of the display portion 2d provided on the base 2, and when it is set as an auxiliary switch, Main body 151 is not ON. That is, when it is set as an alarm switch, it can be clearly seen from the outside that the main body 151 has been tripped. In this way, the display part 28d that can clearly see the rotation of the rotating member S28 from the outside is provided by integral molding, so that the number of parts can be reduced and the structure can be simplified.

Usually, when an overcurrent or the like flows through the circuit breaker and trips, the alarm switch is provided, and the electric manager and the like are notified of the abnormality by the display lamp and the buzzer. At this time, the electrical manager and the like investigate the cause of the overcurrent as soon as possible. However, sometimes there is a request to stop the harsh buzzing sound early, that is, to reset the alarm switch immediately after the switch S103 is turned on. Most circuit breakers of the present invention only have ON and OFF positions as operating handles. Therefore, by turning the operating handle 51 of the main body 151 clockwise, that is, moving from FIG. 3B to FIG. 2B (so-called ON operation), the alarm switch, that is, the switch S103, can be disconnected, but the ON operation cannot solve the cause of the overcurrent trip. .

Therefore, when setting the alarm switch, the switch S103 can be turned off by moving the reset knob 28e provided near the display portion 28d of the rotating member S28 counterclockwise from the position shown in FIG. 3B. The operation related to this disconnection will be described below. As described above, since the trip lever 8 is biased clockwise by the trip lever spring 16, when the rotating member S28 is rotated counterclockwise by the reset knob 28e, the second protrusion provided on the trip lever 8 The part 8b does not collide with the protrusion part 5a provided on the switch knob 5, and on this basis, the trip lever 8 is rotated clockwise. Thus, the third projection 8c provided on the trip lever 8 enters the lower side of the third projection 28c of the rotation member S28 on the drawing (see FIG. 4B described later), and holds the rotation member S28. In this way, the switch S103 is turned off, that is, the movable contact S31 is contacted with the fixed contact c34 provided on the fixed contact c33 output by the b contact, and an equivalent electrical signal for resetting the main body 151 is output to the outside. In other words, the output of the trip signal can be stopped. In this way, since the reset knob 28e that can reset the rotating member S28 from the outside is provided by integral molding, the number of parts can be reduced and the structure can be simplified. In addition, the "first engaging part" mentioned in a claim refers to the engaging part of the said 3rd protrusion part 8c of the trip lever 8, and the 3rd protrusion part 28c of the rotation member S28.

Next, the operation from the tripped state (including the above-mentioned reset operation) to ON will be described. As mentioned above, since the snap lock 10 is constrained by the hook 11, the turning member F18 and the turning member S28 rotate counterclockwise by ON operation of the operating handle 51 of the main body 151 (not shown). Utilizing this rotation, also the same as before, the trip lever 8 releases the constraint, and produces a desired rotation in the clockwise direction. At this time, when it is set as an auxiliary switch, it can also be seen from FIG. 3A that the second protrusion 8b of the trip lever 8 collides with the protrusion 5a of the switching knob 5, preventing the clockwise movement above a predetermined value. Rotation, and by turning the handle 3 clockwise, the first protrusion 8a engages with the recess 3a (see FIG. 2A ), and the trip lever 8 returns slightly counterclockwise. Thus, the position of the trip lever 8 is substantially the same in Fig. 2A and Fig. 2B.

In addition, when it is set as an alarm switch, it can also be seen from Fig. 3B that the second protrusion 8b does not collide with the protrusion 5a. In this way, compared with the setting of the aforementioned auxiliary switch, the trip lever 8 further rotates clockwise, but because the first protrusion 8a is still engaged with the recess 3a (refer to FIG. 2B ), the trip lever 8 turns counterclockwise to Orientation returns, the position is essentially the same in Figure 2B and Figure 3B. And, in the above-mentioned reset operation, that is, in the state where the rotating member S28 has been switched (refer to FIG. 4B described later), the trip lever 8 continues to counterclockwise by engaging the first protrusion 8a with the recess 3a in the same manner. direction rotation, come to the position shown in Figure 2B. At this time, the fourth protrusion 18d of the rotating member F18 continues to hold the rotating member S28 that is about to rotate clockwise by the main spring S29 instead of the trip lever 8 . In this way, the holding of the rotating member S28 formed by the rotation of the trip lever 8 in the counterclockwise direction is released, so that the rotating member S28 returns to its original state, that is, the display part 28d will not move downward on the drawing surface of the display part 2d. . In addition, regarding the setting of the auxiliary or alarm switch, the description of the operation of the switch F102 and the switch S103 after the ON operation is completed is omitted.

Next, referring to FIG. 4A and FIG. 4B , the operation caused by the OFF operation of the operation handle 51 of the main body 151 (not shown) will be described. The handle 3 turns counterclockwise, crosses the line of force, releases the holding of the rotating member F18, uses the main spring F19 to make the rotating member F18 turn clockwise, and moves the movable contact S21 to the fixed contact b25 output by the b contact. The set fixed contact b26 is contacted, and an electrical signal indicating that the main body 151 is not ON (because the switch F102 is an auxiliary switch, so only the aforementioned switch cannot be used to judge tripping or OFF) can be output to the outside. This point is also consistent with Fig. 4A and Fig. 4B same. At this time, because the snap lock 10 is still restricted by the hook 11 and moves, the positions of the snap lock 10 and the hook 11 at the end of the OFF operation remain unchanged from those shown in FIG. 3 . Thus, a series of operations of the switch F102 are the same in both FIG. 4A and FIG. 4B .

On the other hand, as for the operation of the switch S103, different function settings will cause changes, which will be described separately. As mentioned above, the trip lever 8 is linked with the counterclockwise rotation of the handle 3 and starts to rotate clockwise (refer to FIG. 2A and FIG. 2B ). Here, when the auxiliary switch is set, as shown in FIG. 4A, the second protrusion 8b of the trip lever 8 collides with the protrusion 5a of the switching knob 5, and the clockwise rotation of the trip lever 8 is prevented. At the same time, by rotating the rotating member F18 in the clockwise direction, the holding of the rotating member S28 is released, and the trip lever 8 is slightly moved toward the Go back counterclockwise and be in essentially the same position as in Figure 2A. Through the rotation of the rotating member S28, the switch S103 is turned off, that is, the movable contact S31 contacts the fixed contact d36 on the fixed contact d35 output by the b contact, and can output to the outside indicating that the main body 151 is still not ON (due to the switch F102 is an auxiliary switch, so the electrical signal of tripping or OFF cannot be judged only with the aforementioned switch, but, except that there is no constraint of the snap lock 10 during the OFF operation, FIG. 4A is the same as FIG. 3A. In addition, as shown in FIG. 4A, the hook 11 is clamped by the rotating member F18 and the side plate 27. This point is also the same as that of other figures (except FIG. 1) other than FIG. 4A, because the action of the snap lock 10 and the hook 11 is easy. Since it can be seen clearly, its illustration is omitted in figures other than FIG. 4A.

In the case of an alarm switch, as shown in FIG. 4B , since the second protrusion 8b does not collide with the protrusion 5a, the trip lever 8 continues to rotate clockwise. In this way, by rotating the rotating member F18 in the clockwise direction, the rotating member S28 after the hold is released also wants to rotate in the clockwise direction. The third protruding portion 8c enters the lower part and engages with it, so the rotating member S28 does not rotate more than a predetermined amount. As described above, the rotating member S28 rotates slightly clockwise, and a sufficient contact pressure is applied to the movable contact S31 through the first protrusion 28a, so the movable contact S31 does not output from the b contact on the fixed contact c33. The fixed contact c34 leaves. As a result, the switch S103 continues to be turned off, and the electrical signal indicating that the main body 151 has not been tripped can be continuously output to the outside. Cooperating with the signal output indicating that the aforementioned switch F102 is not turned on, it can be known that the main body 151 has been manually operated. is in the OFF state.

As mentioned above, the rotating member S28 that can be used differently in the two switches of auxiliary or alarm, without changing the center of rotation, can only rely on the trip lever 8 to realize the restriction of the OFF operation when the alarm switch is set or Restraint release at ON operation and tripping. In addition, a simple shape is used for interlocking with the handle 3 necessary for the restraint of the rotation member S28. Specifically, the first protrusion 8a and the third protrusion 8a arranged in the vicinity of the rotation center of the trip lever 8 in the left-right direction are used. The structure of the protruding portion 8c can greatly reduce the mutual sliding of parts, and smoothly transmit the action of the handle to the rotating member S28. The restraint of the trip lever 8 when the auxiliary switch is set can still be performed by the switch knob 5 with a simple shape. Thereby, there is no need to add large parts, the number of parts is reduced, the structure is simple, and a highly reliable switch can be obtained also in terms of rotation speed durability. It can also be seen from FIG. 4B that the only thing in the OFF operation when the auxiliary switch is set is that the action of the leaf spring F20 is different from that of the leaf spring S30. In this case, by disposing the b-contact output on the inner side so that the two leaf springs face each other, the degree of freedom in design of the fixed contact can be improved particularly.

In terms of confirming whether the function of the notifying means such as the indicator light or the buzzer circuit connected to the terminals 6a-6c of the switch F102 and the terminals 7a-7c of the switch S103 (both refer to FIG. 5 ) is reliable, If it is an auxiliary switch, it is sufficient to operate the main body 151 simply by turning it on and off. However, in the case of an auxiliary switch, since most circuit breakers equipped with the accessory device of the present invention do not have a trip button, in terms of its confirmation, it is also considered to make the overcurrent flow through the circuit breaker in practice, but this method Not very realistic. Therefore, the only thing that connects the rotation center of the trip lever 8 and the rod portion 8d of the third protrusion 8c is to focus on setting the alarm switch approximately parallel to the design surface 2e of the base 22 (see also FIG. 1 ). In the case where the main body 151 is turned OFF, the confirmation method will be described with reference to FIG. 5 .

A trip button 4 is provided between the handle 3 and the display unit 2d. As mentioned above, when the rod portion 8d is approximately parallel to the design surface 2e (see FIG. 4B ), by pressing the trip button 4 downward on the drawing surface, the trip lever 8 rotates counterclockwise. . Thus, the rotating member S28, which is biased clockwise by the main spring S29, is released from the restraint by the third protrusion 8c of the trip lever 8, so it rotates clockwise. The display unit 28d provided at one end of the rotating member F18 moves downward on the drawing surface of the display unit 2d provided on the base 2 . Then switch S103 on, that is, make the movable contact S31 contact with the fixed contact d36 provided on the fixed contact d35 output by the a contact, and the electrical signal equivalent to the tripping of the main body 151 can be output to the outside, which can be easily Confirm the function of the notification means. By using the trip lever 8 flexibly, the simulated trip (trip function) can be realized without adding special parts, and by setting the trip lever 8 and the trip button 4 on the left side of the drawing surface of the handle 3 side, the operation of the trip button 4 can be performed smoothly. The upward force on the drawing surface is applied to the trip button 4 by the trip button spring 37. If the pressing action of the trip button 4 is stopped, the trip button 4 returns to its original position, but the positional relationship of each part at this time is the same as Figure 3B is exactly the same. Since the description of the reset operation and the ON operation after this operation is repeated, it is omitted.

In the above description, as represented in FIG. 1, although the attachment 101 is installed on the left side of the main body 151, it can also be seen from FIG. 1 that the right side is also provided with a cover body 52, so also The body 151 may be disposed on the right side. Although not shown, by inserting the release cam into the attachment 101, a plurality of attachments 101 can be stacked on both the left side and the right side.

Convenience can be improved by delegating selection of the auxiliary switch or the alarm switch to the user for the switching knob 5 . For users who have requirements for the misoperation of the normally operable switch knob 5 installed on the right side of the aforementioned accessory device 101 or the combination of 2 sets of auxiliary switches or 1 set of auxiliary switches and 1 set of alarm switches, in After setting the switching knob 5 on the maker's side, the so-called non-selectable attachments are not allowed to be set by the user by sealing with the cover body 1 etc., and it must not depart from the scope of the present invention. In addition, as an accessory device of the circuit breaker, for example, the parts constituting the switch F102 except the rotating member F18 may be removed, a circuit breaker with only one set of auxiliary switches or one set of alarm switches, or, for example, the components constituting the switch S103 may be removed. parts, circuit breakers with only one set of auxiliary switches.

Claims (10)

1. the auxiliary equipment of a loop breaker comprises: be disposed at the side of loop breaker, and the side's that rotate revolving member corresponding with the position of operating grip of the open-close mechanism section that is provided with or loop breaker in the loop breaker; Follow a described side's the displacement of revolving member and the opposing party's of moving revolving member; The leaf spring that the terminal that one end has travelling contact, the other end and the output of c contact is connected and links with the rotation of a described side and the opposing party's revolving member respectively; Inform 2 groups of outside auxiliary switches with the conducting of described loop breaker contact is non-conduction, it is by separating contact with described travelling contact and having the output of a contact and 2 groups of fixed contacts, a described side and the opposing party's of a pair of fixed contact of b contact output usefulness revolving member reaches with the corresponding described leaf spring of these revolving members and constitutes; And can make certain 1 group of described auxiliary switch to inform the switching member of outside alarm contact performance function as described loop breaker having been done the overcurrent trip action, it is characterized in that,

Be set at the occasion of alarm contact side when described switching member, described loop breaker is when opening state, described confining part engages with described the opposing party's revolving member, and the 1st holding section of described confining part and described the opposing party's revolving member is positioned near described the opposing party's the center of rotation of revolving member.

2. the auxiliary equipment of loop breaker as claimed in claim 1, it is characterized in that, the 1st holding section is a jut of being located at confining part, and the 2nd holding section that engages with handle of described confining part, with respect to the center of rotation of described confining part be arranged on described jut opposition side on.

3. the auxiliary equipment of loop breaker as claimed in claim 1, it is characterized in that 4 fixed contacts are configured in roughly on the straight line, and be set at the occasion of alarm contact side when switching member, 2 fixed contacts in the outside become the output of a contact, and 2 inboard fixed contacts become the output of b contact.

4. the auxiliary equipment of loop breaker as claimed in claim 1, it is characterized in that, be set at the occasion of auxiliary switch side when switching member, jut rotation to confining part when loop breaker is out state of being located at described switching member retrains, and described confining part does not engage with the opposing party's revolving member.

5. the auxiliary equipment of loop breaker as claimed in claim 4 is characterized in that, the center of rotation of the opposing party's revolving member is all identical when setting with alarm contact when auxiliary switch is set.

6. the auxiliary equipment of loop breaker as claimed in claim 4, it is characterized in that, one side's revolving member is configured in the downside of handle and the position relative with the opposing party's revolving member, simultaneously disposes confining part between a described side's revolving member and described the opposing party's revolving member.

7. the auxiliary equipment of loop breaker as claimed in claim 6, it is characterized in that, be provided with the trip button that confining part is rotated from the outside, when described confining part engages with the opposing party's revolving member, by pressing described trip button, described the opposing party's revolving member is rotated, and make described confining part and trip button have the function of triping.

8. the auxiliary equipment of loop breaker as claimed in claim 4 is characterized in that, the opposing party's revolving member is provided with display part, and it can see the rotation that is produced along with the interlock of a side revolving member from the outside clearly.

9. the auxiliary equipment of loop breaker as claimed in claim 8 is characterized in that, when switching member is set in the occasion of alarm contact side, by being located at the reset portion of display part, can be from the outside the opposing party's of rotating revolving member be resetted.

10. the auxiliary equipment of loop breaker as claimed in claim 4 is characterized in that, switching member can not be operated from the outside.

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