JPS6255831A - Auxiliary switch actuator mechanism for breaker - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a circuit breaker with an auxiliary switch mechanism. More particularly, the present invention relates to an auxiliary switch mechanism for indicating the status of a circuit breaker. The invention further provides for an auxiliary switch actuator mechanism that, once set, operates only during an overcurrent condition to indicate an electrical trip condition of the circuit breaker, and remains set during normal manual operation of the circuit breaker. It is related to

PRIOR ART Circuit breakers with auxiliary switch mechanisms are known. Typically, the auxiliary switch is connected to an alarm circuit with an indicating device (e.g., light, bell, etc.) to remotely notify the condition of the circuit breaker. Some more complex auxiliary switches produce different outputs in response to the three basic states of the circuit breaker: manual OFF, manual ON and electrically tripped. Other common ones only provide an indication when the circuit breaker is electrically tripped.

In particular, the auxiliary switch in some conventional circuit breakers is
It indicates whether the circuit breaker is in the ON or OFF state, with the latter OFF state indicating that the circuit breaker is manually turned off or electrically tripped. Therefore, this type of circuit breaker does not differentiate between manual operation and iM current conditions and is therefore not suitable for applications where the circuit breaker needs to generate an alarm signal when tripped by an overcurrent condition occurring in the circuit. circuit breakers cannot be used effectively.

Some conventional circuit breakers have been designed to overcome the above-mentioned problems by providing an auxiliary switch actuator mechanism that distinguishes between an ON state, a manual OFF state, and a trip state due to overcurrent. This type of circuit breaker is a mechanically complex operating mechanism with a large number of parts that must fit tightly into a narrow cavity, an example of which is shown in U.S. Pat. No. 3,742,402. Requires.

These conventional circuit breakers have a system that distinguishes between normal ON and OFF states and electrically tripped states, and generates a signal in response to each state to notify a remote location.
The problem was that it required a complicated mechanism. OF
Regardless of whether the F state is caused by manual operation or an overcurrent state, it has only been possible to distinguish between the ON state and the OFF state of the circuit breaker using a somewhat complicated mechanism. These problems are caused by manual 0N10 circuit breaker
This has been overcome to some extent by the development of a simple auxiliary switch actuator mechanism that can distinguish between the FF condition and the overcurrent trip condition. An example of a sterilization actuator mechanism is disclosed in US Pat. No. 3,593,232.

However, these actuator mechanisms also have some drawbacks. These mechanisms are difficult to manufacture, especially for reliable operation. These mechanisms are expensive to manufacture, do not work reliably, and in some cases result in numerous returns. Further, the aforementioned U.S. Pat. No. 3,593,2
The commercial version of No. 32 is unduly complex and it is desirable to reduce the number of parts.

Compared to conventional circuit breakers, the present invention has a simpler structure, more reliable operation, and utilizes a mechanism with fewer dimensional restrictions. An object of the present invention is to provide an auxiliary switch actuator mechanism for a circuit breaker that generates a signal indicating whether the circuit breaker is closed, closed, or tripped.

SUMMARY OF THE INVENTION The present invention includes an auxiliary switch actuator mechanism for a circuit breaker. The circuit breaker has a frame and a circuit breaker mechanism attached to the frame. The circuit breaker mechanism includes a manually operable handle, a circuit breaker contact pivotally mounted to the frame and movable between an open position and a closed position, and a foldable linkage connecting the handle and the movable contact. A latch pin is provided which cooperates with the linkage and folds the linkage upon detection of an overcurrent flowing through the circuit breaker. The actuator mechanism has movable contacts.

an auxiliary switch; and an actuator movably connected to the auxiliary switch between a first position and a second position to respectively move a movable contact of the auxiliary switch between a normal open position and a normal closed position. It is equipped with parts.

The actuator member has a base plate having at one end a bifurcated portion extending outwardly in the longitudinal direction of the base plate to define an open groove. Some actuator members include a base member that includes a recess for receiving a locking arm. The recess has a stepped base including a lower base and an upper raised portion having a limiting edge. In either case, the arm portion extends upwardly from the base member and engages adjacent the movable circuit breaker contact when the circuit breaker movable contact is moved to its closed position. In this way, when the movable contact of the circuit breaker closes, the auxiliary switch also closes.

The actuator mechanism also includes a locking member having a central portion that is pivoted directly to the frame, preferably coaxially with the movable circuit breaker contact. The locking member includes first and second arms extending outwardly from a central portion. The distal end of the first arm is placed in an open groove or recess in the locking arm housing of the actuator member and biased against the groove or recess. In any event, the distal end of the first arm locks the actuator member when the actuator member is placed in a closed position that locks the auxiliary switch. The second arm extends into the movement path of the latch pin when the pin is tripped. When the latch pin is tripped, the second arm is rotated by the pin to rotate the first arm and disengage the first arm from the actuator member, thus releasing the auxiliary switch upon detection of an overcurrent condition. let When manually opening the circuit breaker, the latch pin does not come into contact with the second arm, and the auxiliary switch is not affected by this manual opening.

Examples As mentioned above, U.S. Pat. No. 3,593,232 discloses a circuit breaker that includes an auxiliary switch that specifically indicates tripping due to overcurrent.

However, the circuit breaker shown here (and its commercial counterpart) is unduly complex, requires a large number of parts, and is difficult to manufacture.

In particular, the circuit breaker of the above US patent has a coil 3 and an armature 3.
1 (not shown) to which the first frame is attached. The pivot of the movable contact arm 5 is a pin 3 supported in a recess in the two halves forming the circuit breaker housing.
Defined by 0. (Such a design is the source of the assembly difficulties discussed above.) The collapsible linkage and latch (seer) pin triggering assemblies 21, 24, 25 and 23 are connected to the pin 30 and the second
The second pin is held by a boss on the handle 18. The handle 18 in this U.S. patent circuit breaker includes two pins 19 that fit into recesses in both halves of the casing. In commercial versions, these pins are integrally formed with the handle. Finally, a locking lever for the auxiliary switch is supported by the second frame 29. Also, in this US patent, the second frame is installed by pins 19. However, the second frame in the commercially available version of the above patent includes pin 30 and a further pin (not shown in the above patent) that fits into a recess in the case half.
It is installed by

FIG. 1 shows one embodiment of the auxiliary contact switch mechanism of the present invention incorporated into a circuit breaker.The circuit breaker 10 includes a case 12 formed of an electrically insulating material such as plastic. The case incorporates a circuit breaker mechanism, designated generally at 14, which includes a collapsible linkage mechanism operatively connecting a handle 16 and a movable contact arm 18. The trigger mechanism, including the latch pin 20, forms part of a circuit breaker mechanism that controls the collapsible linkage. Circuit breaker mechanism 14, handle 16 and contact arm 18 are all mounted to frame 22. When an overcurrent flows through the coil 1 connected to the circuit between terminals 2 and 3, the frame 22
armature 4 rotating around a pin 5 supported by
The first end 4a of is attracted to the coil.

At this time, the second end 4b of the armature rotates and strikes the latch pin 20 of the trigger mechanism, folding the collapsible linkage and tripping the circuit breaker, pulling contacts 7 and 8 apart from each other. Typical circuit breaker mechanisms that may utilize the present invention are described in U.S. Pat.
The circuit breaker mechanisms disclosed therein are also described in their entirety herein for reference. Note that other elements of the circuit breaker of the present invention that are not described in this specification are as shown in the above-mentioned US patents and patent applications.

An auxiliary switch 24 is attached to the lower portion of the casing 12. Typically, the casing 12 is composed of two halves, each of which houses a pin member 26, and these pin members are inserted into the hole 28 of the auxiliary switch 24 to shut off the auxiliary switch 24. Attach it at an appropriate position within the container 10. Typically, auxiliary switch 24 comprises a microswitch assembly having a set of auxiliary contacts actuated by internal contacts (not shown). A spring bias is applied to movable pin 3o causing it to extend upwardly from the plastic housing of switch 24. pin 30
is engaged with an internal contact to control the on/off operation of switch 24. Sterilization switches are known and are exemplified by the switch shown in the aforementioned US Pat. No. 3,593,232. The auxiliary switch disclosed in this patent is also incorporated herein by reference in its entirety.

In a first embodiment of the invention, movable pin 30 and thus switch 24 directly controls actuator member 32 . Third
Referring to FIGS. A and 3B, the actuator member 32 includes a base plate 34 and a base plate 34.
It consists of an arm 36 extending upward from. The distal end of the arm 36 terminates in a flange 38 having a downwardly bent lip 40 at the end.

A pair of pivot pins 42 are located at the ends 4 of the base plate 34.
It extends laterally outward from around 4. plate 34
A groove 48 is provided at the longitudinal end 46 opposite to the end 44 of the
form, with its ends bifurcated or hupa-oak-shaped. Note that the purpose of doing this will be explained in detail later.

Pivot pin 42 is located within a corresponding pivot mounting opening 50 in the casing of switch 24. The base plate 34 is placed on the movable pin 30. plate 3
The end 44 of the switch 24 cooperates with the casing of the switch 24 and acts as a stop to ensure that the actuator member 32 is secured to the pin 3.
Limit rotation away from 0.

The auxiliary switch actuation mechanism of the first embodiment of the invention also includes a locking member or arm, designated generally at 52. Referring to FIGS. 2A and 2B, the locking member 52 has a central portion 54 having a central opening 55 therein. A first arm 56 extends radially from the central portion 54 in a first direction.

The distal end of the first arm 56 includes fingers 60 and a shoulder 62.
form. Arms 56 of locking member 52 overlap within grooves 48 of actuator member 32 . Second arm 58
extends from the central opening 54 to the first arm 56 at an angle. The second arm 58 is generally J-shaped.

Arm 58 has an intermediate portion 64 and a hooked end portion 66 extending from the distal end of the intermediate portion. A connecting leg 68 extends from an end proximate the intermediate section 64 at right angles thereto and connects the leg to the intermediate section 54 at a substantially right angle to the first arm 56 . The intermediate portion 64 thus extends substantially parallel to the first arm 56 .

Locking member 52 is attached to frame 22 by pivot pin 70. Pin 70 passes through opening 55 and a corresponding mounting hole in frame 22. Pin 70 is contact arm 1
8 is also attached to the frame 22. Pin 70 therefore forms an axis around which both contact arm 18 and locking arm 52 pivot (note that mounting pin 70 is a mounting pin 70 shown in FIGS. 1 and 2 of the aforementioned U.S. Pat. No. 486,716). (corresponding to pin 83). A biasing spring 72 is also attached to pin 70 via a spring bushing (not shown) which engages arm 56 to bias locking member 52 toward the normal locking position. That is, spring 7
2, the locking member 52 is rotated counterclockwise in FIG. A second spring (not shown) is coaxial with spring 72 and similarly acts to bias contact arm 18 counterclockwise to close contacts 7 and 8 when the circuit breaker is tripped. Separate.

FIG. 1 shows a side view of an auxiliary switch, a switch actuator and a circuit breaker mechanism according to an embodiment of the invention when the circuit breaker is in the ON state, ie the main contacts 7 and 8 are in contact. FIG. 4 shows a partially cutaway perspective view of such a circuit breaker in the OFF state. The operation of the circuit breaker of the present invention will be clear to those skilled in the art by comparing these two figures.

When the circuit breaker handle 16 is moved from the OFF position to the ON position, ie, to the right in FIG. Rotate the arm 18 so that the movable contact 7 engages with the fixed contact 8 of the circuit breaker, as shown in FIG. In this case, the electrical circuit through the circuit breaker is completed and current flows normally through the circuit breaker. As the movable contact arm 18 rotates under the action of the circuit breaker mechanism 14, the bottom surface 19 of the arm 18 engages the flange 38 of the actuator arm 36.

This causes the actuator member 32 to push against the pivot pin 42 against the spring pressure exerted by the inwardly rebounding contacts of the auxiliary switch 24 acting via the movable pin 30'.
Rotate around the axis defined by . As the actuator member 32 rotates, the inner side a48a of the groove 48 formed by the two-pronged end shape of the actuator member 32 slides past the shoulder 62 of the locking member 52.

At this time, the shoulder 6 is biased by the spring 72 which rotates the locking member 52 counterclockwise around the pin 70.
2 rests on the upper surface of the base plate 34, and this shoulder serves as a stop member to prevent the actuator member 32 from moving in the opposite direction, that is, upwardly in FIG. Fingers 6
0 engages with the rear part 1i48a of the groove 48, and the locking member 5
Limit the counterclockwise movement of 2. In this case, the auxiliary switch is held in the operative position until the shoulder 62 of the locking arm 56 moves and disengages from the actuator member 32.

Typically, the auxiliary switch 24 has three contact terminals: a common "°C" terminal (to which the spring contact is connected), a normally open "N10" terminal, and a normally closed "N10" terminal.
/C" terminal.The current is common °゛C"C"
Flow to the auxiliary switch spring contact member between either terminal C or the N10 terminal. When the circuit breaker is turned on (closing the circuit through the main contacts of the circuit breaker), the actuator member 32 engages the auxiliary switch 24 in the manner described above.
and close the circuit between C and N10 terminals. This is the N10 state of the auxiliary switch 24. It goes without saying that it is also within the scope of the present invention to have the auxiliary switch act in the opposite manner, that is, to connect the C terminal to the N/C terminal when the main contacts of the circuit breaker make contact.

During normal operation of the circuit breaker, when the handle 18 is manually moved between the ON and OFF positions shown in FIGS. 1 and 4, respectively, the latch pin 2o engages with the link member of the circuit breaker mechanism 14. , to prevent the link device from collapsing. When the handle 16 is manually moved by an operator from the ON position to the OFF position under normal operating conditions, the linkage 14 remains locked by engagement of the latch pin. As the handle is rotated from the ON position to the OFF position, the latch pin 20 follows a first path that takes it out of contact with the arm 58 of the locking member 52. The movable contact arm 18 pivots upward about the pivot pin 70, pulling the movable contact 7 away from the fixed contact 8, thereby opening the main circuit, so that the arm 18 is connected to the auxiliary switch via the arm 36 of the actuator member 32. The force does not reach the pin 30 of 24 and is released. Without restraint on actuator member 32, the bias exerted by the internal spring of switch 24 on pin 30 returns the internal contacts to the N/C position. but,
This is prevented by the action of the locking member 52. The shoulder 62 of the arm 56 acts as a stop against the base plate 34 of the actuator member 32 to urge the actuator member upwardly for a bias applied to the actuator member 32 via the movable pin 30 by the internal contacts of the auxiliary switch 24. Eliminate it forever. Therefore, when the breaker is manually opened, the contacts of the auxiliary switch 24 remain in the N10 state.

On the other hand, if the circuit breaker is tripped by an overcurrent flowing in the main circuit, the armature 4 strikes the latch pin 20, which folds the linkage mechanism in a known manner;
Open the main circuit. The collapsing action of the linkage mechanism causes the latch pin 20 to move in a second run, where it contacts the second arm 58 of the locking member 52. The latch pin 20 moves further, causing the locking member 52 to rotate about the pivot pin 70 against the bias applied by the spring 72. This disengages shoulder 62 from plate 34 and releases actuator member 32. In this case, the movable pin 30 is moved outwardly by a biased spring contact within the auxiliary switch 24, so that the auxiliary switch 24 switches from the N10 state to the N/C state. Therefore, the alarm circuit connected between the C and N/C terminals of the auxiliary switch 24 is closed.

This alarm circuit can be used to remotely notify the status of a tripped circuit breaker.

5 to 8 show a second auxiliary switch mechanism according to the present invention.
An example is shown below. Note that the same elements as those of the first embodiment are designated by the same reference numerals. Modifications of the elements shown in the first embodiment are indicated by prime symbols and are shown as the same parts, and completely new elements are shown by new parts.

FIG. 5 shows a side view of the circuit breaker mechanism of the second embodiment when the main contacts are closed, and FIG. 8 is a partially cutaway perspective view of the second embodiment when the main contacts are open. Show the diagram. FIG. 8 shows the N10 state of the auxiliary switch 24, that is, the state after the main contact is manually opened. Other than as described below, the operation of this second embodiment circuit breaker is the same as that of the first embodiment.

Referring to FIG. 5, movable pin 30 directly controls actuator member 80. Referring to FIG. As shown in FIGS. 7A and 7B, actuator member 80 includes a base portion 82 and an arm 84. As shown in FIGS. The arm 84 is the base portion 82
It extends upward from. Base portion 82 also includes a box-like housing 90 that receives locking member 52'. Recess 92 in housing 90 terminates in a floor 94 and a raised edge 96. The lower wall portion 95 is the floor portion 94
and the raised edge 96 , and the rear wall portion 97 is adjacent to the raised edge 96 and the periphery of the recess 92 . In this way, a step is formed at the joint between the floor of the recess 92 and the rear wall. A shim 98 may be attached to the bottom outer surface of the actuator member 80 at which point the actuator member 80 engages the movable pin 30.

The shim 98 is variable to fit the auxiliary switch 24 within the casing 12 and may be required to compensate for certain manufacturing tolerances or to increase the upward force exerted by the spring-biased movable pin 30 on the actuator 80. It can be used on certain occasions.

A pair of pivot pins 86a and 86b extend laterally outwardly from the base portion 82 of the actuator member 80 near an end 88 of the actuator member 80 opposite the end from which the arm 84 extends. . Pivot pins 86a and 86b seat within corresponding pivot mounting openings in the circuit breaker casing 12.

This embodiment has the advantage that the actuator member 80 is formed of a non-conductive material. By locating the arm or leg 56' of the locking member 52' in the recess 92 of the actuator member 80, the creepage distance between the conductive leg 56' and the exterior of the case is reduced.
and clearance is effectively increased. The structure of the second embodiment is based on the International Electrotechnical Commission (International Electrotechnical Commission).
ctro Technical Comm1ssion
-I EC) safety standards and the West German Fairband Germany Electrotechnica Nie Fora (V
erband Deutscher Elektrot
satisfies the standards of Echniker e, V, -VDE).

Figures 6A and 6B show a second embodiment of a locking member 52'. This locking member 52' has an arm 56' terminating in a square end 63, whereas the locking member 52 of the first embodiment terminates in a finger 60 and a shoulder 62.

The second embodiment of the present invention operates in substantially the same manner as the first embodiment, with some differences as described below. When the movable contact arm 18 is rotated under the action of the circuit breaker mechanism 14 during circuit breaker setting, the bottom surface 1 of the arm 18
9 contacts and engages the arm portion 84 of the actuator member 80 . This causes actuator member 80 to rotate about an axis defined by pivot pins 86a and 86b against a spring bias acting through movable pin 30. As actuator member 80 rotates clockwise about an axis defined by pins 86a and 86b during circuit breaker setting, locking member 52
' end 63 slides upwardly along a wall communicating with floor 94 of recess 92 of actuator member 80 toward raised edge 96 . The end portion 63 is the actuator member 80
When the bias spring 72 reaches the level of the raised edge 96 in the housing 90 of the
' in order to rotate the end 63 around the pin 70.
It rides on the raised edge 96 and comes into contact with the rear wall 97 of the recess 92, as shown in FIG. Locking member 52
The end 63 of ' constitutes a stop member that prevents the actuator member 80 from moving in the opposite direction, i.e., a stop member that prevents the actuator member 80 from rotating upward when the circuit breaker contact is normally opened. . Such locking action, caused by the interaction of the square end 63 and the raised edge 96, is caused by the forked ends of the actuator member 32 and the fingers 60 and shoulders of the locking member 52 in the first embodiment of the invention. This corresponds to the interaction with 62.

As in the case of the first embodiment, when the disconnector is tripped by an overcurrent flowing in the main circuit, the armature 4 rotates the latch pin 20 and locks this pin into the locking member 52'.
The locking member 52' is rotated clockwise about the pivot pin 70 against the action of the bias spring 72. As a result, the locking member 5
The end 63 of 2' is removed from the raised edge 96 of the recess 92. This releases actuator member 80. At this time, since the movable contact arm 18 has already come off the arm 18, the bias of the movable pin 30 lifts the actuator 80 upward. This causes the switch 24 to turn to N.
It is switched from the 10 state to the N/C state.

When manually turning off the circuit breaker, use latch pin 2.
0 travels in such a path that it does not strike the locking member 52'. Therefore, the auxiliary switch is not prevented from responding and the switch remains in the N10 state.

The auxiliary switch actuator mechanism of the present invention has only three main parts: actuator member 32 or 80;
, a locking member 52 or 52', and a bias spring 72. Actuator member 32 or 80 and locking member 52 or 52' can be attached to most standard circuit breaker mechanisms. Due to the interlocking arrangement of the two parts, the manufacturing tolerances of these two parts do not have to be tight. Furthermore, because of the interlocking arrangement, there are no mechanical failures throughout the circuit breaker's normal lifespan, and operation is reliable. Furthermore, the locking member 52 or 52'
Because the contact arm rotates on the same frame, the structure is simpler than conventional devices.

It goes without saying that the present invention is not limited to the examples described above, and that many changes can be made without departing from the scope of the claims.

[Brief explanation of drawings]

FIG. 1 shows the first example of the present invention in the case of the circuit breaker being in the N state.
FIG. 28 is a front view of the locking member in the case of the first embodiment of the present invention, FIG. 2B is a side view thereof, and FIG. 3A is the first embodiment of the present invention. 3B is also a side view thereof; FIG. 4 is a locking member, an actuator member and an auxiliary contact switch according to a first embodiment of the invention in the case of the circuit breaker being tripped; FIG. FIG. 5 is a perspective view of the second embodiment of the present invention when the circuit breaker is in the ON state.
FIG. 6A is a front view of the locking member in the case of the second embodiment of the present invention, FIG. 6B is a side view thereof, and FIG. 7A is the second embodiment of the present invention. FIG. 7B is a side view thereof; FIG. 8 is a plan view of the actuator member according to a second embodiment of the invention when the circuit breaker is tripped; FIG. DESCRIPTION OF SYMBOLS 1... Coil, 2.3... Terminal, 4... Armature, 4a... First end, 4b... Second end, 5... Pin. 7.8... Main contact, 10... Breaker, 12... Case, 14... Breaker mechanism, 16... Handle, 18... Movable contact arm, 19... Bottom surface, 20... Latch pin, 22... Frame, 24... Auxiliary switch, 26... Pin member, 28... Hole, 30... Movable pin, 32... Actuator member, 34...・Base plate, 36... Arm, 3B... Flange, 40... Lip, 42... Pivot pin, 44. 46... End, 48... Groove, 50... Opening, 52 ... Locking member, 54 ... Central part, 55 ... Central opening, 56 ... First arm, 58 ... Second arm, 60 ... Finger-shaped part, 62 ... Shoulder part , 63... End portion, 64... Intermediate portion, 66... End portion, 68... Leg portion, 70... Pivot pin, 72... Bias spring, 80... Actuator member, 82... Base portion, 84... Arm, 86a, 86b... Pivot pin, 88... End portion, 90... Housing, 92... Recess, 94... Floor portion, 95 ... lower wall portion, 96 ... raised edge portion, 97 ... rear wall, 98 ... shim. Fig. 2A Fig. 28 Fig. 42 Fig. 38 Fig. 6A Fig. 68 Fig. 7A Fig. 78 General procedure correction - 1 (method) % formula % Display of cases Patent application 1981-1991 , No. 423 Name of Invention Relationship with Case of Person Who Amended Auxiliary Switch Actuator Mechanism for Circuit Breaker Patent Applicant Airpax Corporation

Claims (1)

[Scope of Claims] 1) A manually operable handle, circuit breaker contact means pivotably rotatable between an open position and a closed position, and the handle and the movable contact means are connected to each other. A circuit breaker mechanism including collapsible linkage means and trigger means for triggering said collapsible linkage means in the event of an overcurrent and is movable between a normal open position and a normal closed position. An auxiliary switch actuator mechanism for a circuit breaker comprising an auxiliary switch having contact means of
The actuator mechanism is: coupled to the auxiliary switch and movable between a first position and a second position, the actuator mechanism being adapted to move the contact means of the auxiliary switch between the normal open position and the normal closed position. a base plate having a longitudinally outwardly extending open groove at one end thereof, the movable circuit breaker extending at an angle relative to the base plate; actuator means having an arm portion for contacting and engaging the movable circuit breaker contact means in moving the contact means to its closed position; a central portion, and first and second arm portions extending in different directions from the central portion, the first arm portion having a distal end that is received within the open groove of the actuator means. and means for engaging the actuator means when the actuator means is in its second position to lock the actuator means in the second position, and the second arm portion is configured to allow the circuit breaker mechanism to locking means that extends into a movement path of the trigger means when tripped to cause the second arm portion to be rotated by the trigger means to unlock the first arm portion and the actuator means; An auxiliary switch actuator mechanism for a circuit breaker, characterized by comprising: 2) said interlocking engagement means has a narrow finger for contacting and engaging said inner edge of said actuator means and contacting a top surface of said actuator means when said actuator means is in said second position; An auxiliary switch actuator mechanism for a circuit breaker according to claim 1, further comprising an engaging shoulder. 3) The circuit breaker auxiliary switch actuator mechanism according to claim 2, wherein the second arm portion of the actuator means is hook-shaped. 4) The shutoff according to claim 1, wherein the actuator means includes means for pivotally connecting the base plate to the auxiliary switch through vertical engagement with the movable contact means of the auxiliary switch. Dexterity assist switch actuator mechanism. 5) Biasing means for normally biasing the first arm portion of the locking means towards the locking position in locking engagement with the actuator means. Dexterity assist switch actuator mechanism. 6) A circuit breaker auxiliary switch actuator mechanism as claimed in claim 5, further comprising biasing means for normally biasing said actuator means toward a first position of said actuator means. 7) means for pivotally connecting the base plate to the auxiliary switch through vertical engagement with the movable contact means of the auxiliary switch; and means for limiting the amount by which the base plate rotates toward the first position of the actuator means; An auxiliary switch actuator mechanism for a circuit breaker according to claim 6, further comprising: an auxiliary switch actuator mechanism for a circuit breaker according to claim 6. 8) A manually operable handle, circuit breaker contact means pivotably rotatable between an open position and a closed position, and foldable linkage means connecting the handle and the movable contact means. and trigger means for triggering said collapsible linkage means in the event of an overcurrent flow, and contact means movable between a normal open position and a normal closed position. In an auxiliary switch actuator mechanism for a circuit breaker comprising an auxiliary switch,
The actuator mechanism is: an actuator pivotably movable between a first position and a second position to respectively move the contact means of the auxiliary switch between the normal open position and the normal closed position; The means includes: a base plate; a locking arm housing having a recess including a bottom portion and a raised edge therein; actuator means having an arm portion for engaging the movable circuit breaker contact means; a central portion pivotally mounted coaxially with the movable circuit breaker contact means; and actuator means extending in different directions from the central portion; first and second arm portions, the first arm portion having a distal end that is received within the recess and the raised edge when the actuator means is in its second position. means for engaging said actuator means to lock said actuator means in said second position, and said second arm portion extending into a travel path of said trigger means when said circuit breaker mechanism is tripped; An auxiliary switch actuator mechanism for a circuit breaker, comprising: locking means for rotating the second arm part by the trigger means to unlock the first arm part and the actuator means. ) The means for engaging the raised edge is a narrow finger-shaped portion that comes into contact with and engages the raised edge of the recess. Dexterity assist switch actuator mechanism. 10) The auxiliary switch actuator mechanism for a circuit breaker according to claim 9, wherein the second arm portion of the locking member is hook-shaped. 11) The circuit breaker according to claim 8, wherein the actuator means includes means for pivotally connecting the base plate to the circuit breaker casing through vertical engagement with the contact means of the auxiliary switch. Dexterity assist switch actuator mechanism. 12) Biasing means for normally biasing the first arm portion of the locking means toward the raised edge of the recess.
Auxiliary switch actuator mechanism for circuit breakers as described in . 13) The circuit breaker auxiliary switch actuator mechanism of claim 12, further comprising biasing means for biasing said actuator means normally toward said first arm portion of said locking member. 14) It is characterized by comprising means for pivotally connecting the base plate through vertical engagement with the contact means of the auxiliary switch, and means for limiting the extent to which the base plate rotates toward the first arm position. Claim 1
The circuit breaker auxiliary switch actuator mechanism according to item 3. 15) A manually operable handle, circuit breaker contact means pivotably rotatable between an open position and a closed position, and foldable linkage means for connecting the handle and the movable contact means. and trigger means for triggering said collapsible linkage means in the event of an overcurrent flow, and contact means movable between a normal open position and a normal closed position. an auxiliary switch actuator mechanism for a circuit breaker comprising an auxiliary switch, the actuator mechanism: being pivotally connected to the auxiliary switch and movable between a first position and a second position; actuator means for respectively moving the contact means of the switch between said normal open position and said normal closed position, the actuator means having a base portion extending substantially perpendicular to the pivot axis of said actuator means; actuator means; for moving the contact means of the auxiliary switch between the normal open position and the normal closed position when moving the movable contact means between its open and closed positions; an actuator arm portion for transmitting operation of the movable contact means to the actuator means; a central portion coaxially pivoted with the movable circuit breaker contact means; and an actuator arm portion extending in different directions from the central portion; first and second locking lever arms, the first locking lever arm including means for locking the actuator means in the second position, and the second locking lever arm including means for locking the actuator means in the second position; locking the first locking lever arm and the actuator means, extending into a travel path of the trigger means when tripped, and causing the second locking lever arm to be rotated by the trigger means when tripped; An auxiliary switch actuator mechanism for a circuit breaker, comprising: a locking means for releasing the engagement; and; 16) The circuit breaker auxiliary switch actuator mechanism according to claim 15, wherein the actuator means includes a groove provided in the base plate for locking engagement with the distal end of the first locking lever arm. . 17) at the distal end of said first locking lever arm a narrow finger portion which fits within said groove of said actuator means and a base of said actuator means when said actuator means is in said normal closed position; 17. The circuit breaker auxiliary switch actuator mechanism according to claim 16, further comprising a shoulder portion that comes into contact with the top surface of the portion. 18) The auxiliary switch actuator mechanism for a circuit breaker according to claim 17, wherein the second locking lever arm is substantially J-shaped. 19) Claim 15, further comprising means for biasing the first locking lever arm toward the locking position with the actuator means.
Auxiliary switch actuator mechanism for circuit breakers as described in . 20) The circuit breaker auxiliary switch actuator mechanism of claim 19, further comprising means for normally biasing said actuator means toward said first locking lever arm. 21) means for pivotally connecting the base plate to the auxiliary switch through vertical engagement with the movable contact means of the auxiliary switch; and means for limiting the amount by which the base plate rotates toward the first locking lever arm. The auxiliary switch actuator mechanism for a circuit breaker according to claim 20. 22) The auxiliary switch actuator mechanism for a circuit breaker according to claim 16, wherein the groove is an open groove. 23) The auxiliary switch actuator mechanism for a circuit breaker according to claim 15, wherein an arm portion of the actuator is brought into contact with a flat surface of the movable circuit breaker contact means. 24) The actuator arm portion is formed integrally with the base plate portion, and the arm portion extends at an angle with respect to the base plate portion. Auxiliary switch actuator mechanism for circuit breakers. 25) said base portion of said actuator means comprises a recess for receiving a distal end of said locking lever means;
Claim 1, characterized in that the recess has a floor, a rear wall section, and a step defining a raised edge located approximately at the junction of the floor and rear wall sections. The auxiliary switch quatuator mechanism for a circuit breaker according to item 15. 26) The circuit breaker auxiliary switch actuator mechanism of claim 25, wherein the first locking lever arm is biased toward the rear wall of the recess. 27) The circuit breaker auxiliary switch actuator mechanism of claim 25, wherein said actuator means is biased toward a distal end of said locking lever means. 28) The auxiliary switch actuator mechanism for a circuit breaker according to claim 25, wherein the second locking lever arm is substantially J-shaped. 29) The auxiliary switch actuator mechanism for a circuit breaker according to claim 25, wherein the actuator arm portion is brought into contact and engagement with a substantially flat surface of the movable circuit breaker contact means. 30) A circuit breaker comprising an auxiliary switch actuator mechanism for the circuit breaker, the circuit breaker comprising: a frame; a manually operable handle attached to the frame;
circuit breaker contact means pivotally mounted to said frame and movable between an open position and a closed position; and folding linkage means connecting said handle and movable contact means. a circuit breaker mechanism; latch pin means for controlling the collapsible linkage;
means for tripping the pin means to fold the link device in response to an overcurrent flowing through the circuit breaker; and contact means movable between a normal open position and a normal closed position. a movable contact arm mounted on one of the circuit breaker contacts; biased for rotation about a first pivot and configured to be moved by the movable contact arm into a first free position and a second locked position; an actuator arm being moved between to control the contact means in the auxiliary switch and having a recess stepped in the inner wall; a locking arm pivotally mounted and extending into the recess formed in the actuator arm and biased against a wall of the stepped recess formed within the recess; a locking lever forming a stop means together with the stepped portion so that the stop means locks the actuator arm in its second locking position when the actuator arm is moved to a predetermined position; circuit breaker. 31) the locking arm terminates in a square end portion;
Claim 30, characterized in that, when the actuator arm is in the second locking position, the square end portion contacts and engages the stepped portion in the recess in the actuator arm. The circuit breaker mentioned. 32) The circuit breaker according to claim 30, further comprising a circuit breaker casing, and wherein the arm is pivotally connected to the circuit breaker casing. 33) The circuit breaker according to claim 30, wherein the locking lever is attached to the frame. 34) The circuit breaker according to claim 30, wherein the actuator arm is brought into contact with a flat surface of the circuit breaker contact means. 35) Biasing the actuator arm upward such that upward movement of the actuator arm is limited and the upward movement is controlled by the interaction of the end of the locking arm and the bottom of the recess. The circuit breaker according to claim 30.