KR0123927B1 - Electromechanical switch with reversable auxiliary module - Google Patents

Abstract

Electromechanical switch devices, such as motor circuit breakers, consist of a main device to which an auxiliary contact module is added.

The case 40 of the additional module is reversible so that some auxiliary contacts can be added to the main case without deformation in the first position which is a normally closed contact and the second position which is a normally open contact.

Description

Electromechanical switchgear with 2-position additional module

1 is a perspective view of a circuit breaker fitted with additional modules according to the present invention.

2 is an enlarged partial cross-sectional view of the circuit breaker of FIG.

3 and 4 are cross-sectional views showing insertion positions and operating positions of the additional module in the circuit breaker, respectively.

5 is a cross-sectional view taken along line V-V of the additional module of FIG.

FIG. 6 is a cross-sectional plan view VI-VI of the additional module of FIG.

7 is a view of part of the transmission lever of FIG.

8 is a side view of the transmission lever

9 to 12 show various operation positions of the additional module.

13 and 14 are normal closed contact or normal open contact additional modules, each of which has an additional module mounted thereon.

Top view of the front of the circuit breaker

Figure 15 is a schematic diagram showing another embodiment of the additional module of the present invention

FIG. 16 is an elevational view of another embodiment of an additional module with a switchable flap

17 and 18 are cross-sectional views taken along line A-A of the additional module of FIG.

* Explanation of symbols for main parts of the drawings

10: main case 20: protrusion

30: lever 30a, 30b of circuit breaker: arm

33: front opening 40: case of the additional module

42: fixed contact 43: moving contact

44, 45: screw terminal 46: opening

48, 49: horizontal plane 56: lever of the additional module

56b: Lever bug (other end)

70F, 70O, 83, 84: Function display

80: switchable flap 82: display window

86: surface of the flap.

The present invention relates to an electromechanical switch device comprising a main device to which an auxiliary contact modulus is added.

For device manufacturers and users, it is desirable to add additional modules with normal opening and closing auxiliary contacts without structural modification. One example of an apparatus that provides such characteristics is disclosed in US Pat. No. 3,388,353.

An object of the present invention is to provide a switch device that can be used as a normally open or normally closed contact by simply inverting the auxiliary contact of the thin additional modulus.

The electromechanical switch device of the present invention comprises at least one movable contact which cooperates with at least one fixed contact, and a plurality of electrodes for opening and closing each current path between power terminals connected to the contact are provided corresponding to the current path. And a main case having a control mechanism for controlling the opening and closing of the contact by operating the movable contact of each electrode through a transmission member having an on position and an off position in accordance with the state of the control mechanism, and operated by the transmission member. An additional module including an electric circuit having an auxiliary contact and a case added to the main case is configured.

According to the present invention, the case of the additional module is attached to the main case at the same place at any one of the first position where the predetermined auxiliary contact is the normally closed contact or the second position which is the normally open contact. One or the other of the two opposing large surfaces visible only for each of the two positions of the additional modulus can be flipped for the user to see, and the case of the additional modulus is for inserting conductors from both sides. It includes a function display displayed on the two facing large openings.

Preferably, the additional module is received and fastened in the front opening of the main base, which is the switch device. One or two additional modules suitable for flipping may be suitably stored in the openings.

In particular, preferably, when the additional module is inserted into the front opening of the main case and placed on the protrusion of the main case, the rotatable lever of the switch device operates the main contact and the auxiliary contact.

The additional modulus may also be fitted with a switchable flap suitable for taking the two positions, the flap being applied to one or the other of the two opposing large surfaces of the additional modulus to form the additional modulus and / or flap. It is characterized by exposing each function display.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

The switch device of the present invention is a motor circuit breaker including a case (10) composed of a body portion or base (12) fixed to a cover (11) on the front and a support member on the back.

Areas 13 and 14 for accessing the power supply terminal 15 are formed on the front surface of the case 10, on the opposite side to the fixed side. Screw holes can be inserted into the hole portions 16 formed in these areas to remove the power conductors, and hole portions formed in the upper and lower regions 18 perpendicular to these areas 13 and 14 are provided. The conductor is inserted in 17.

In addition, the case 10 includes a control or display member 22 and at least one manual control knob 23 or the like on a flat front face 21 parallel to the regions 13 and 14. As shown in FIG. 1, as shown in FIG. 1, the surfaces 24 and 25 which are normally arranged in the horizontal direction are formed parallel to the said region 18. As shown in FIG.

In particular, the protrusion 20 of the case 10 accommodates a trip member for controlling the movement of the control mechanism 26 and the contact bridge 27 that cooperate with the handle 23. These bridges are movable along the X axis perpendicular to the front face 21 and have a moving contact 29 which cooperates with the fixed contact 28 to open each current path between the two terminals 15.

These contacts are opened by the control mechanism 26 by an operation to be applied to the contact bridge supporting member in the direction of arrow F1 on the end of the lever 30. The contact can also be developed by a part of the modulus added to the case 10 or by a solenoid in the case. In other words, this opening operation can be effected at the midpoint of the longer arm 30a of the lever 30 in the direction of arrow F2. The contact may also be closed in a known manner by the handle 23 or the solenoid.

The lever 30 is pivotally supported on the journal 31, and is biased by the light spring 32 in the direction of closing the contacts 28, 29. As shown in FIG. The shorter arm 30b, which acts directly on the additional modulus, is also connected in a crank shape. The arms 30a and 30b form an angle of almost 90 ° to each other.

According to the present invention, a front opening 33 is formed on the surface 24 of the case between the projection 20 and the front region 13 for accessing the terminal 15. A removable additional modulus, for example in the shape of being coupled to the hook, can be inserted into the opening 33 by a translational movement such as a cassette. That is, the width of the case 40 of the additional modulus is almost equal to that of the main case 10, and in this example, the width of the case 40 is equal to the width of the case 10 reduced by the thickness of the side surface thereof. have. When no additional module is mounted, the opening 33 is shielded with a detachable band. The depth of the case 40 and the insertion amount into the case 10 are configured such that the front face of the case 40 does not protrude beyond the front face 21 of the case 10.

The case 40 of the additional modulus is composed of a body portion 40a and a cover 40b (see FIG. 6) or a shell-shaped member, and is formed between two screw terminals 44 and 45. And a stationary contact member 42 and a movable contact 43 for forming or interrupting a single contact electrical connection. The shaft D1 of the opening 46 formed to access the screw is parallel to the shaft D2 of the screw of the power supply terminal 15, and is sandwiched between these shafts D2 to facilitate the wiring ( See FIG. 13).

The conductor insertion opening 47 is opened on the large horizontal plane 48 of the case 10 and the large horizontal plane 49 located opposite the surface. In addition, the dual contact type electrical connection can be naturally formed in the case 40.

An opening 50 is formed between the openings 46 so that the case 40 approaches the terminals 44 and 45 on the front surface, and the opening 50 is centered on the center surface Y of the case. To accommodate the operation end of the latch 60 described later.

The additional modulus is capable of reversing about an axis perpendicular to the plane of the front face 21 of the circuit breaker.

By inverting this additional module, the additional module takes two different positions. In one position, the face 49 of the case 40 slides over the face 24 of the protrusion 20 of the case 10 when the case 40 is inserted into the opening 33, and in the other position. Upon insertion, the face 48 of the case 40 slides over the face 24.

Inside the case 40 of the additional module is configured as follows.

The movable contact 43 is supported by one end of the leaf spring 52 which is opposing the spring by the contact pressure spring 53, and the other end of the leaf spring 52 is connected to the terminal 44. It is buried in 54. The fixed contact 42 is supported by another connecting member 55 connected to the terminal 45.

The contact holder plate spring 52 is supported such that one end 56a is pivotally supported on the journal about the axis D3 and the other end, that is, the free end 56b is formed at the rear of the case 40. It is actuated by the lever 56 reaching the opening 57. The leaf spring 52 and the lever 56 cooperate at the intermediate contact 56c of the lever. A sliding member may be used instead of the lever.

In the first embodiment (Figs. 2 to 5), the latch consists of a lever 60 independent of the lever 56, in particular in cooperation with the lever in the insertion area, and in the second embodiment (Fig. 15). ) Is composed of at least one snap fastener member attached to the case 10 and / or the case 40.

The latch lever 60 (FIGS. 2 to 5) is introduced into the operation head 61 accommodated in the opening 50 and the opening 58 of the case 40, so that each of the front openings 33 One on each side, it has a projection 62 which is engaged with one or the other of the two openings 63 and 64 formed in the case 10. The lever 60 is pivotally supported about the axis D4 of the case 40 parallel to the axis D3 and the longitudinal axis of the leaf spring 53, which axis is perpendicular to the plane Y. The lever 60 also has a heel-piece 66 formed on the opposite side of the protrusion 62, which is applied to the lever 56 to push it into the auxiliary contact open position upon insertion. Finally the lever 60 is poured into the position of FIG. 4 by a spring or by a spring lug 67.

The additional module has a first position (FIGS. 9 and 10) indicating a normal open contact addition function and a second position (FIGS. 2 to 4, 11 and 1) indicating a normal closed contact addition function. 12 degrees). Appropriate function indications 70F (F is normally open) and 70O (O is normally closed) are indicated on the opposing surfaces 48 and 49 of the case 40 of the additional module, respectively. Therefore, since the function of the inserted module is clearly displayed, the indication for the function that is not performed is not revealed. FIG. 13 shows the normal closed contact function, and FIG. 14 shows the normal open contact function.

The first arm 30a of the lever 30 of the circuit breaker of the present invention operates the member supporting the power contact, and the second arm 30b is the lug 56b of the other end of the lever 56 of the additional module. Works). And lug 56b is biased with respect to the center surface Y of case 40.

The distal end portion of the arm 30b of the lever 30 includes a finger portion 71F that operates in the normal open contact addition function and a finger portion 70O that operates in the normal closed contact addition function. Each finger part opens the auxiliary contact when the main contact is opened (normal open contact added) and closed (normal closed contact added). The fingers 71F and 71O act against the lug 56b in the opposite direction and are aligned with the axes D5 and D6 symmetric to the plane Y. As shown in FIG. That is, the lug 56b 'is aligned with the axis D5 (normally open contact addition function) or aligned with the axis D6 (normally closed contact addition function). If the additional modulus contains other contacts (e.g., a four-terminal additional modulus) the other shown in dashed line in FIG. 7 on the lever 30 for operating the other control lever, such as lever 56 Finger parts 71M and 71N may be provided.

The additional module is mounted and operated by the following method.

When fitting the additional module to the circuit breaker, the worker lifts the additional module to the top of an appropriate side, and slides the case 40 along the horizontal plane 24 of the case 10 to be inserted into the opening 33. When the protrusion 62 of the lever 60 is forcibly withdrawn, the lever 60 rotates clockwise, and the hile piece 66 pushes the lever 56 that rotates in the same direction. Therefore, irrespective of the state of the circuit breaker, the lug 56b is positioned on the proper side of the finger portion 71O or 71F. At the end of insertion, it is limited by the bearing 72 on the case 10, so that the projection 62 is accommodated in the opening 63 or 64 to hold the additional module.

It is of course possible that the additional modulus can be attached to the main unit without changing its depth or width, or disturbing its mounting or being disturbed by the mounting of a predetermined additional modulus on the side.

When the normal open contact addition function is selected (FIGS. 9 and 10), the (70F) mark can be seen on the face 49 of the case 10. When the main contact of the circuit breaker is closed (FIG. 9), the lever 30 moves counterclockwise, and is moved to the left by the lever 56 spring 53 by the finger portion 71F, and the auxiliary contact ( 42) and 43 are closed. When the main contact of the circuit breaker is opened (Fig. 10), the lever moves clockwise, and the finger 71F is applied to the lug 56b. In addition, the lever 56 pushes back the leaf spring 52 to compress the spring 53 to separate the contacts 42 and 43.

Next, when the normal closed contact addition function is selected (FIGS. 11 and 12), the 7070 mark can be seen on the surface 48 of the case 10. FIG. When the main contact of the circuit breaker is closed (Fig. 11), the finger portion 71 is applied to the lug 56b to open the auxiliary contact. On the other hand, when the main contact is opened (Fig. 12), the lug 56b moves to the right by the finger portion 7O to close the auxiliary contact.

FIG. 15 shows that the actuating lever 56 in this embodiment shown moves to its auxiliary contact open position upon insertion. To this end, the lever 56 has a projection 56b having the same function as the aforementioned projection 62. In addition, the case 40 is engaged with the case 10 by a lug or snap fastener member 73 depending on the elastic force of the case wall or its specific part.

In order to remove the additional module, the operator operates the latch lever 60 to withdraw the protrusion 62 (FIGS. 2 to 5) or dismantle the lug or snap fastener member 73, and then the case ( Pull the case 40 from 10).

As another embodiment shown in FIGS. 16 to 18, the case 40 of the additional modulus is provided with a switchable fixing flap 80 which pivots about the bearing 81 of the case.

This flap may be installed on the large horizontal plane 48 of the case 40 (FIGS. 16 and 17) or on the large horizontal plane 49 (FIG. 18) of the case.

In addition, the flap is permanently formed on the surfaces 48 and 49 to expose respective function marks 83 and 84 representing the operation mode of the additional module (normal closed contact or normal open contact). It includes a display window 82 for. Terminal marks such as 70O and 70F may be attached to the front surface of the case 40 or above the telephone flap. Moreover, the surface 85 with a groove etc. is formed in order to catch a flap easily. The intermediate position of the rotating flap is shown in phantom in FIG. 18.

In both operating positions of the flap, the flap 80 protects the operator's finger directly against the screw terminal 44 of the additional module by, for example, a suitable surface such as the surface 86, and the flap, This protection is provided while reducing the thickness l of the case 40. Finally, in either case, it should be noted that the lugs 56b, fingers 71O and 71F move in the thickness l direction of the case 40.

In the snap fastener variant, the switchable flap may have a functional indication on both opposite sides thereof and may also serve to facilitate removal of the case 40.

Although the present invention has been described with respect to the motor circuit breaker, it can be similarly applied to switch devices such as a contactor, a contactor / circuit breaker, and a line circuit breaker, and other modifications are of course included in the present invention. It is also possible to replace the pivotable transmission lever and the pivotable operating lever with a translational member.

Claims (8)

A plurality of electrodes each consisting of at least one movable contact cooperating with at least one fixed contact and for opening and closing each current path between power terminals connected to the contact are provided corresponding to the current path, and according to the state of the control mechanism. A main case provided with a control mechanism for controlling the opening and closing of the contact by operating the movable contact of each electrode through a transfer member having an on position and an off position, and an electric circuit having an auxiliary contact operated by the transfer member; In the electromechanical switch device composed of an additional module consisting of a case added to the main case, the case 40 of the additional module, the predetermined auxiliary contact is a first closed contact is a first position or a normal open contact; In any of the two positions, it is added to the main case at the same place, so that the two One or the other of the two opposing large surfaces 48, 49, which are visible only for each of the positions, can be flipped for the user to view, and the case 40 of the additional module inserts conductors from both sides. An electromechanical switch device having a two-position additional module, characterized in that it comprises an opening (46) and a function display (70O, 70F, 83, 84) displayed on two opposing large surfaces. 2. The switchable flap (80) of claim 1, wherein a switchable flap (80) is attached to the additional modulus (40) to take two operating positions, said flap being two opposite large surfaces (48, 49) of the additional modulus. An electromechanical switch device with a second position additional module, characterized in that it is applied to one or the other of the to expose the respective functional indication on the additional module or flap. 3. The switchable flap (80) according to claim 2, wherein the switchable flap (80) is a fixed flap that swings on the case (40) of the additional module and includes at least one display window (82) for exposing the function display (83). And an electromechanical switch device having a second position additional module. 3. The switchable flap (80) according to claim 2, wherein the switchable flap (80) has a surface (86) for preventing the operator's finger from touching the terminal (44) of the additional module. Electromechanical switchgear. 2. The auxiliary contact actuating member (56) according to claim 1, wherein the additional modulus is provided with an auxiliary contact actuating member (56) which cooperates with the transfer lever (30) by the members (56B, 71O, 71F) that are biased with respect to the plane of symmetry (Y) of the additional modulus. These members comprise a lug 56b of an additional modulus cooperating with two fingers 71O and 71F at the general portion of the transmission lever 30 in the main case 10, the fingers being in opposite directions. Electromechanical switch device having a second position additional modulus, characterized in that applied to the lug. 2. The auxiliary contact actuating element (56) according to claim 1, wherein the additional modulus includes an auxiliary contact actuating member (56) which cooperates with the transfer lever (30) by the members (56B, 71O, and 71F) with the additional modulus biased with respect to the symmetry plane (Y). And, these members move in the direction of thickness (l) of the additional modulus. The second position additional hair according to claim 1, wherein the case 40 of the additional modulus is inserted into the front opening 33 of the main case 10 and placed on the protrusion 20 of the main case. Electromechanical switchgear with duo. The control arm (30b) according to claim 1, wherein the transmission lever of the main case is applied to the receiving arm (30a) and the actuating member (56) which are actuated or added by the contact mechanism of the trip mechanism and the solenoid in the main case (10). Electromechanical switch device with a second position additional module, characterized in that the pivotable lever (30) having a).