• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The locking mechanism according to the invention comprises two levers (4a, 4b) which act respectively on two tappets (2a, 2b) for activating the breakers (1a, 1b) of an inverter-contactor. Each of these levers, hinged about a fixed axis (5a, 5b) comprises a roller (6a, 6b) applied to the profile of a rotating cam (7) by a spring (9a, 9b). This cam (7) can go from a locked position of automatic action in which it authorises the closing of the breakers (1a, 1b) by keeping the levers (4a, 4b) away from the tappets (2a, 2b), to a tripped position in which the lever (4a, 4b) acts on the tappets (2a, 2b) to keep the breakers (1a, 1b) in the open position. …<??>The tripping of this mechanism can be ensured by a trigger activated by one or more default detection relays. …<IMAGE>…
    公开号:SU1716981A3
    申请号:SU894742395
    申请日:1989-11-16
    公开日:1992-02-28
    发明作者:Фаффар Андре
    申请人:Телемеканик (Фирма)；
    IPC主号:
    专利说明:

    This invention relates to a locking mechanism for a limiting contactor, comprising at least one set of switches operable to close and open with a control electromagnet (contactor function) or device that, in conjunction with an overload detector, provides a quick opening (limiting function).
    The function of the limiter is prior to the function of the contactor, since in the event of a short-circuit closure, the opening process of the switches should be carried out as quickly as possible. For this purpose, the opening control of the switches is carried out by an appropriate mechanism, and the power supply of the electromagnet is disconnected only to confirm the disconnection.
    Known shut-off contactor with overload protection. Also known contactor with electromagnetic control and automatic opening at the onset of overload.
    The aim of the invention is to increase reliability and speed.
    In addition, the aim of the invention is to create such a mechanism that can be connected to a reversible contactor-limiter, made in the form of two installed a number of contactors-limiters, as well as a mechanism that can occupy three stable positions: Stop, Turn, Off transition position return to the original position.
    The goal is achieved in that the device comprises at least one lever that acts on at least one switch-pushing block and which is pivotally mounted around a fixed axis, and this lever contains a bearing surface, preferably represented by a roller, pressed to the cam profile by elastic means , and means are provided for moving this cam from the automatic stroke blocking position, in which the cam holds the lever at a distance from the pushing block, ensuring that they form a closed switch in the off position, wherein the lever acts on the pusher block to withstand the switches in the open position.
    It should be noted that in the locked position, the moving contacts of the switches can be transferred to the normally closed position due to the return springs and can be switched on.
    due to the action on the pusher electromagnet, providing the function of the contactor.
    The mechanism contains two levers acting on at least one block-pusher, and these two levers are pivotally connected around two axes and each of them has a bearing surface pressed to the cam profile by elastic means ,,,
    0 In this case, means are provided for moving this cam from the automatic stroke blocking position, in which the cam width opposite the support surfaces is maximum, to the off position, in which this width is minimal, and in which the levers act on the pushing block to hold switches open.
    0 When unlocking a cam from this device, which rotates freely around its axis, perpendicular to the device, the rollers resting on the cam clamp it with their elastic means of return and bring it to a position of smaller width. The supporting surfaces supported on it simultaneously approach each other, causing the arms to tip over, the free ends of which push out
    0 block pusher in the direction of opening the switches.
    According to the predominant form of this mechanism, each of these levers has a Z-shape,
    5, it is hingedly connected near one bend Z, its free end, located on the side of its hinge joint, is carried by a corresponding roller, and its other free end is located 0 opposite the corresponding pushing unit. Thanks to this arrangement, they get an energetic effect on the pushing blocks and their switches.
    The cam mechanism is shaped like a letter.
    5 S, and its rollers rest on its outer contour. This cam is mounted free on a perpendicular axis rigidly connected to the single-ended control knob that carries the locking cams and
    0 control and which returns to the Stop position by the coil spring surrounding it. By turning this knob, the mechanism is shifted to the stop, automatic and reset position.
    5 In addition, this knob can be rigidly connected to the finger, which can push the cam into the locking position, in which it comes into contact with the trigger and locks during rotation. The cam can then be released by turning on
    this trigger by one or more defect detection relays.
    The central axis of the said device carries a control cam, the periphery of which has a notch into which a finger mounted on a lever can penetrate under the action of elastic means, securing in this position the closing of a switch arranged in series with the excitation circuit of electromagnets serving to ensure the function of the contactor. This corresponds to the position of the Automatic stroke device.
    According to the preferred embodiment, the mechanism comprises a latch that is rotatably mounted on a fixed axis against the spring and which can be blocked by two trigger plates, each of which can unlock the defect detection relay. One of these trigger bars can also be a trigger cam S-shaped and controlled by a defect detection relay, while another trigger is controlled by another defect detection relay, the two triggering switches They may or may not be connected.
    When the mechanism is to function as an inverting limiter contactor, these levers act simultaneously on pushing blocks that correspond to a set of actuated switches.
    FIG. 1 shows a contactor with a shut-off mechanism in connection with two contactors, side view; 2-5 - the same for the four positions of the rotary control knob (Stop. Turn, Off and transitional position, Return); on Fig. 6. - contactor, side view; figure 7 is a device unlocking mechanism.
    As can be seen in Fig. 1, the contactor serves to open and close two groups of three switches 1, the moving contacts of each group simultaneously turning on the pusher 2. Each pusher actuates three respective contacts of the switch 1 in the open position against the action of the springs 3 serving return moving contacts of switches.
    The mechanisms associated with the two pushers 2 are symmetrical.
    Each pusher 2 can be controlled by an electromagnet 4 by means of levers 5 spring-loaded with springs 6, and the switches 1 are closed when the corresponding electromagnet 4 is energized.
    Each pusher 2 can also interact with the switch 1 end of the lever 5. For this purpose, the lever has a Z-shaped form in a horizontal position
    and pivotally rotates around axis 7, which is perpendicular to its plane and located near the tips of the Z-shaped lever 5 opposite to the corresponding pusher. Each other end of the step 5 bears a roller 8, the axis of which passes in the plane of the lever biv continuing the branch of the Z-shaped lever that bears it. Each of the two rollers 8 relies on a cam 9 for them, which interacts
    5 with rollers 8 and mounted loosely on an axis 10, perpendicular to the axis 7. The rollers 8 are pressed against the cam profile 9 by tension springs 11 and each of them moves along guide discs 12, which
    0 rolls freely on the supports 13 parallel to the axis of movement of the rollers.
    The rotary control knob 14 can be rigidly connected to the other end of the axis 10, which can be rotated along
    5 to the arrow against the action of the return coil spring 15, which covers it and which tends to return the axis 10 to the stop position. Axis 10 is rigidly connected to another cam. 16 with three tracks, perpendicular to the axis, and with a finger 17, which is parallel to the axis 10 and which interacts with the plane of the cam 9.
    FIGS. 2-5 show the pushers 2 of the switch 5 of the switches 1, the levers 5 of the Z-shape and in view from above the rollers 8 in accordance with the outer profile of the cam 9. They also show in view from above the track of the cam 9, as well as the control handle 14 in their
    0 four positions A finger 17, a lever 18 connected to one electromagnet 4, a lever 19 connected to another electromagnet is also shown.
    The cam 9 is S-shaped, mounted in the center of the axis 10 in such a way that its width, taken along the line enclosed in the plane of Fig. 1, may be small (Fig. 4) when the rollers 8 are close to each other. , or significant (Figures 2-5), when the rollers 8 are separated from each other and the branches of the arms of the Z-shaped arms 5, which oppose the springs 11, turn to the outer side. From this it follows that the opposite branch of the Z-shaped arms five
    5 deviates from the push rod 2, which moves away from the moving contacts of the switches 1, and the switches are closed by the action of the springs 3.
    It is in this position that the first cam 9 can be blocked by the tip
    20 of the lever which enters the recess 21 formed in the outer profile of the cam 9. The lever with the tip 20 is pivotally connected to the axis 22, which is perpendicular to the plane of the cam 9, while its tip pushed out to this cam by the spring 23 can move away from notches 21 under the action of a defect detection relay (not shown).
    When the tip of the lever 20 comes out of the recess 21 of the cam 9, the cam rotates in the direction of the smallest width between the rollers 8, as the rollers are attracted to each other by the extension springs 11. In this case, the cam 9 occupies the position shown in FIG. 4.
    The latch 23 is pivotally mounted on the pin 24 parallel to the axis 10 and provided with a return spring of the latch 25. It includes a pin 26 which is directed to the axis 10 and which is supported by the action of the spring of the latch 25 on the third cam 27. The latter successively comprises: a recess 28 against which a finger 26 for locking the axis 10 in an angular position corresponding to the Stop position against the action of the extension spring 11, and a circular portion conducive to a quarter turn rotation of the axis 10 clockwise from the Stop position.
    The cam 28 of axis 8 (FIG. 4) rotates counterclockwise, therefore, the rotation of axis 10, which is rigidly connected with it, is blocked by another finger 29, directed inwardly at the end of latch 23, which interacts with face 30, performed on cam 28, in the off position
    The latch 23 has an extension 31 that spans the axis 10 approximately a quarter of a circle opposite the finger 29 and which has an outer protrusion 32 that can engage with the tip of another lever 33. This lever with the tip is spring-loaded 34 and can be rotated by another defect detection relay (not shown).
    Both levers with lugs 20 and 33 are rigidly connected in their movements by the abutment 35, the correct calculation of the arms of the levers allows each of them to have a different shutdown force in conjunction with the means of defect detection, for example, with a thermal or magnetic protection relay no voltage or voltage supply (not shown).
    The latch 23 has a shoulder 36, into which a rod 37 can penetrate, rigidly connected with the lever of the tip 20.
    In addition, there is a cam 38 rigidly connected to the axis 10 with a rectangular notch 39, into which a protrusion 40 can penetrate, made at the end of the lever 41 rotating on the hinge 42, and pressed to the cam 38 by a spring 43. The other end
    the lever 41 carries a pushing lever 44 which acts on the movable plate 45 of the switch 46 installed in series in the power supply circuits of the coils of electromagnets 4. When the finger 40 is in
    0 in the normal position at the periphery of the cam 38 (FIGS. 2, 4 and 5), the pushing lever 44 presses the movable plate 45 and the switch 46 opens, while the finger 40 falls into the rectangular notch
    5 39 of the cam 38 (Fig. 3), the pushing lever 44 releases the plate 45 and the switch 46 closes.
    In addition, the rod 47, rigidly connected with the latch 24, can rotate the legs 41 in the direction in which the protrusion 40 at the end of the lever extends from the notch 39 of the cam 38.
    On the other hand, the lever 41 in the bend that it forms opposite the projection 40,
    5 has a recess 48 open outward from the side of this protrusion through the narrow slit 49. A loop spring 50 is placed in the recess 48, and its two ends are fixed in the walls of the lever 41 in such a way that
    0 tends to re-close the slit 49 due to the inherent elasticity of the thermoplastic material from which this lever is made.
    In addition, the rod 47, rigidly mounted with the latch 23, can rotate the lever 41 in the direction in which the protrusion 40 at the end of the lever comes out of the notch 39 of the cam 38.
    In the stop position (fig 2) latch
    0 23 is blocked from rotating in both directions by the tips of two levers 20 and 33. The protrusion at the end of the lever 40 lies on the periphery of the cam 38 on the outside of the notch 39 so that the switch 46
    5 is open, and electromagnets 4 are not excited. Therefore, the tappets 2 are supported on the switches 1 by the levers 18 and 19, and the switches 1 are open. Z-shaped levers 5 are removed from the pushers by 2 cam 9
    0 by means of the rollers 8, since the cam 9 opposite these rollers has the greatest width and is locked by a lever with a tip 20 in connection with its recess 21. and also with a finger 17 rigidly connected with
    5 handle 14 controls.
    When moving to the Stroke position (FIG. 3), in which the axis 10 and the cams 27.28 and 38 connected to it are turned 90 ° clockwise, the latch 23 remains blocked by the levers with the lugs 20 and
    33, and the finger 26 remains in contact with the annular position of the cam 27. On the other hand, the S-shaped cam 9 remains locked by a lever with the tip 20, but it is released from the finger 17, which is rigidly connected to the handle 14. Rotation of the cam 38 leads to the penetration of the finger 40 in the cutout 39, which leads to the closure of the switch 46 and provides a lock in the stroke. Electromagnets 4 can function. In this example, the electromagnet 4 is energized and turns the lever 19 in opposition to the spring in such a way that the pusher 2 releases the moving contacts of the switches 1, which are closed by the action of the springs 3.
    The recess 48 of the lever 41 and the loop spring 50 serve to properly engage in the Traveling position without interfering with the shutdown: when you move the handle 14 to the Stop position, the notch 39 of the cam 38 moves down, the finger 40 is held by the spring 43 and all this until the lever 41 rolls out and open switch 46.
    If one or the other overload relay is now turned off, exerting a force F2 or F21 on a lever with a lug 20 or 33, this releases the latch 23, which rotates approximately 45 ° in a counterclockwise direction under the action of the return spring 25 to take a position shown in figure 4. The axis 10 is no longer held by the protrusion 40, which slips out of the recess 39 under the action of the spring 15 in a counterclockwise direction until the cam 28 is held by the finger 29. In this case, the axis 10 and the handle 14 are in the Off position.
    Thus, the lever with the tip 20 is loaded, and the transfer lever 35, the S-shaped cam 9 can be rotated by the action of the rollers 8 on which the springs 6 act. The rollers approach each other, which causes the free ends of the Z-shaped levers 5 to move to the pushers 2 and to the opening of the switches 1. Because the protrusion 40 of the lever 41 exits the notch 39 of the cam 38. The switch 46 opens, which excludes the power supply of the electromagnets 4, which also rely on the pushers 2 to open the switches 1,
    In order to return the mechanism to its original position, it is sufficient to turn the control knob 14 slightly more than 45 ° in opposition to the helical return spring 15 so that it slightly goes beyond the Stop position shown in Fig. 2,
    The cam 9 ejected by the finger 17 rigidly connected to the handle 14 engages in this case with its fifth 18c lever to the tip 20 with a slight bypass, while the latch 23 returns to its original position in which it is locked by two levers 20 and 33 due to the action of the cam 27, which pushes the latch pin 26. The switch 46 connected to the cam 38 remains open and the process can be repeated.
    The described device, used for a reversing contactor, can be used for a simple contactor with the replacement of two tappets 2 (Fig. 1} with a single pusher 2 (Fig. 6), which is acted upon by the free ends of two Z-shaped levers 5.
    Fig. 7 shows the means for performing an additional function of an opening check using a cam 51 driven by a knob 14 of the control. By means of a lever 52 connected by a hinge 53 and pushed out by face 54 of cam 51, this latter acts on the pushers 2, independently of the rest of the mechanism, so that by forcibly acting on the handle 14 it allows to remove extraneous bodies or to eliminate possible jamming.
    权利要求:
    Claims (13)
    [1]
    1. A locking mechanism for a limiter contactor containing at least one set of switches operated by an electromagnet by means of a movable pusher mounted between the electromagnet core and the movable element of the switch, and a control knob mounted on the shaft for interacting with the movable pushrod, characterized in that, in order to increase reliability and speed, it is equipped with a lever pivotally mounted on an axis, one end of which interacts with a movable push Lem, and the other has a roller bearing surface, and a cam mounted on a shaft perpendicular to the shaft of the control handle, the roller being designed to interact with the cam and pressed against it by means of elastic means, while the cam is equipped with a device for moving it from in which the cam holds the additional lever at a distance from the pusher, to the position in which the lever acts on the pusher.
    [2]
    2.Mechanism according to claim 1, about tl and h and y p and and - so that it is equipped with a second set
    switches, the second electromagnet, which actuates the switches using a second pusher installed between the electromagnet bar and the movable element of the switch, as well as a second lever pivotally mounted on the axis; one end of the lever is designed to interact with the pusher and the other has a supporting surface in the form a roller intended to interact with the same cam and pressed against it by means of elastic means, the cam being designed such that the cam width opposite the supporting surfaces is maximum in the off position and in the on position the minimum.
    [3]
    3. The mechanism according to claim 2, characterized in that each of the levers is Z-shaped, and each of the hinges is located near the bend, with each roller located at a distance closer to the hinge than the free end, designed to interact with the pusher.
    [4]
    4. Mechanism according to claims 2 and 3, characterized in that the cam is S-shaped, and its zone of interaction with the rollers is located on the outer contour.
    [5]
    5. A mechanism according to claim 4, characterized in that the rollers are provided with a guide disc.
    [6]
    6. The mechanism according to claims 2-5, that is, so that the axis of the control knob is spring-loaded using a helical spring.
    [7]
    7. The mechanism according to claims 6 and 7, characterized in that it is equipped with an overload relay installed in series with the switches and trigger trigger, and the control knob has a finger, which is designed to interact with the cam, which in turn has a pin that interacts with the trigger, in this case, when interacting with the finger, the cam is set in the locking position, and released during the interaction of the five with the trigger, and the specified trigger is connected to the overload relay.
    [8]
    8. A mechanism according to Claim and 7, characterized in that the shaft. on which the control knob is mounted, provided with an additional control cam with a notch on. the periphery specified notch intended
    to interact with the protrusion of an additionally inserted spring-loaded pivot arm, the other end of which interacts with the additionally inserted switch installed in the circuit of each electromagnet.
    [9]
    9. Mechanism 6-10, characterized by the fact that a spring-loaded latch and an additional trigger are inserted, the latch is rotatable and installed so that it interacts with both triggers, and the operation of the additional trigger is connected with the overload relay.
    [10]
    10. The mechanism according to claim 9, of which there are two rigidly connected
    among themselves by means of two shoulders lever. .
    [11]
    11.Mechanism according to claim 9 or 10, of which there is a hub with the fact that the third cam, the latch is rigidly mounted on the control handle shaft
    has a protrusion, and the cam has a flat face, while the protrusion of the latch interacts with the flat face of the cam in the off position,
    [12]
    12. Mechanism according to sections 9-11, about tl and h and y - y and with the fact that on the shaft of the control knob
    the fourth cam is rigidly mounted with the fifth so that the said fifth interacts with the latch projection to return it to the Stop position.
    [13]
    13. The mechanism according to claims 2-12, of which it is equipped with an unlock cam mounted on the shaft of the control stick and connected to the pusher with an additional lever.
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    同族专利:
    公开号 | 公开日
    DE68913439T2|1994-08-04|
    FI95850B|1995-12-15|
    IE63410B1|1995-04-19|
    EP0369844B1|1994-03-02|
    US5012214A|1991-04-30|
    ZA898352B|1990-07-25|
    ES2017235A6|1991-01-01|
    SE8903650D0|1989-11-01|
    EP0369844A1|1990-05-23|
    HK128794A|1994-11-25|
    JPH02192626A|1990-07-30|
    CN1023584C|1994-01-19|
    KR920008833B1|1992-10-09|
    FR2639144A1|1990-05-18|
    IE893580L|1990-05-17|
    CA2002308A1|1990-05-17|
    CN1042796A|1990-06-06|
    FR2639144B1|1993-05-28|
    DK577389D0|1989-11-17|
    DK577389A|1990-05-18|
    FI95850C|1996-03-25|
    KR900008563A|1990-06-04|
    SE8903650L|1990-05-18|
    CA2002308C|1995-12-26|
    SE469765B|1993-09-06|
    FI895490A0|1989-11-17|
    DE68913439D1|1994-04-07|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2229981A|1937-02-12|1941-01-28|Gen Electric|Electric switch|
    NL97219C|1954-05-11|
    US3467800A|1967-03-21|1969-09-16|Gen Electric|Reversible cam actuating mechanism for electric switches|
    FR2516297B1|1981-11-09|1984-01-06|Telemecanique Electrique|
    FR2570872B1|1984-09-27|1988-08-26|Telemecanique Electrique|VARIABLE COMPOSITION SWITCHING DEVICE|
    DE3637418C2|1986-11-03|1989-09-28|Kloeckner-Moeller Elektrizitaetsgesellschaft Mbh, 5300 Bonn, De|IT1231103B|1989-08-09|1991-11-18|Sace Spa|SELF-COORDINATED MANEUVERING AND PROTECTION DEVICE FOR ELECTRICAL EQUIPMENT.|
    FR2655769B1|1989-12-08|1994-03-04|Telemecanique|ADAPTATION DEVICE FOR AUXILIARY CONTACTS BOX.|
    ES2042390B1|1992-02-18|1996-10-01|Power Controls Iberica S A|MECHANICAL INTERLOCK FOR CONTACTOR BATTERIES.|
    FR2706221B1|1993-06-07|1995-07-21|Telemecanique|Protection switch device.|
    EP0669633B1|1994-02-25|1999-09-29|Schneider Electric Industries SA|Protective switching device|
    US5503526A|1995-01-23|1996-04-02|Neils; John J.|Fire fighting fan with three point support|
    CN1253912C|2003-05-29|2006-04-26|刘平|Electric power switch apparatus|
    JP5766285B2|2011-06-09|2015-08-19|三菱電機株式会社|Operating mechanism|
    DE102013222495A1|2013-11-06|2015-05-07|Robert Bosch Gmbh|protective arrangement|
    CN106531491B|2017-01-05|2018-11-16|常熟开关制造有限公司(原常熟开关厂）|The operating mechanism of automatic change-over|
    CN113078031B|2021-04-02|2021-12-31|浙江安迅电气股份有限公司|Magnetic latching relay and voltage regulating device thereof|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR8814919A|FR2639144B1|1988-11-17|1988-11-17|LOCK MECHANISM FOR LIMIT SWITCH|
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