Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
  • H01H71/10—Operating or release mechanisms
  • H01H71/1054—Means for avoiding unauthorised release
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
  • H01H71/10—Operating or release mechanisms
  • H01H71/50—Manual reset mechanisms which may be also used for manual release
  • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
  • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure

Definitions

• the invention relates to a protective switching device in which a manual control acts via a switch lock on at least one movable contact arm, which forms a contact pair, in detail according to the preamble of claim 1.
• the switch lock has a latching point between a pawl and a release lever in a kinematics .
• shock waves that can occur when the contact pieces meet when switched on, travel as shock waves through the switch lock. In the sensitive latch, this can lead to unlatching and unwanted switching off. Such shock waves are difficult to avoid, in particular in the case of modernly designed switch locks with a shock activation or a shock-like activation. Up to now, attempts have usually been made to achieve adequate damping in practice by the spatial distance between the shock source and the latching.
• the invention is based on the object of developing a protective switching device which securely maintains the latch even in the event of impact loads.
• a distance-imparting element causes a decoupling distance in this direction when latching with respect to the direction in which force can be applied due to the formation of the kinematics due to a switching shock.
• This distance can be established in particular between the pawl and its support, on the release lever, when latching, whereupon the distance-giving element is withdrawn, so that a decoupling buffer zone results in the joints can leak without the pawl falling off its release lever.
• the protective switching device can be provided with a pivotable manual control element which acts via a switching lock on a movable contact arm which forms a contact pair with a fixed contact piece.
• the switch lock can, as is customary in a line circuit breaker, be designed such that when a pawl resting on a release lever is released, a contact opening occurs regardless of the position of the manual control element due to the action of a release.
• a distance-giving element when latching the pawl with the release lever with respect to the direction in which as a result of
• the protective switching device can in particular have a switching lock, the pawl of which moves the movable contact arms directly or indirectly in a portable bearing, and the release lever is arranged in a fixed bearing and supports the movable contact arm.
• the pawl can also be connected to a coupling rod to the hand control in another portable storage.
• the distance-giving element can then advantageously be a contour disk which, in the switched-off position of the switching lock actuated by the manual control element, places the release lever at a distance and is retracted in the switched-on position up to the latch contour.
• the contour disk can be rotatably mounted in the bearing of the pawl for the coupling rod and through the coupling rod are guided by drivers which are arranged on the contour disk.
• FIG. 2 shows the protective switching device according to FIG. 1 in the switched-on position.
• FIGS. 1 and 2 show, in the manner of an exploded view, essential components which are arranged in FIGS. 1 and 2.
• the protective switching device has a manual control element 1 and a key switch, of which the latching point between the pawl 2 and a release lever 3 are illustrated, wherein a contact arm 4 is pivotally articulated on the pawl and has a contact piece 5, which against a fixed contact piece 6 works and forms a contact pair with this.
• a distance-providing element which is in contact with the latch causes a decoupling distance 8 in the direction 9 in which, due to the formation of the kinematics of the switching mechanism, a force is applied due to a switching shock is possible.
• Usual contact and switching springs are illustrated here by compression springs 10.
• Tripping devices usually a magnetic release and a thermal release, are not shown here to promote clarity.
• a pivotable manual control element 1 is connected to the movable contact arm 4 via a coupling rod 11 and via the switching lock.
• the trigger lever 3 is in a local fixed bearing 12 arranged and supports the movable contact arm 4 in the latched position.
• the coupling rod 11 is connected to the pawl 2 in a portable bearing 13.
• the distance-providing element is designed on the principle of a contour disk. In the switch-off position, the contour disk, as shown in FIG. 1, bears against the latch on its contour and thereby causes a decoupling distance 8 in the switch-on position when the contour disk is retracted up to the latch contour.
• the spacing element in the form of a contour disk can be rotatably mounted in the bearing 14 of the pawl with the coupling rod 11.
• the contour disk has drivers 15, through which it moves from the
• Coupling rod 11 is guided.
• the guidance can also take place through a component of the housing or cover.
• the distance-giving element 7 in the form of a cam disk is realized by a contour protruding according to FIG. 1 and by a contour springing back in the region of the latching position according to FIG. 2.
• FIGS 1 and 2 are essential, arranged in FIGS 1 and 2
• a coupling rod between the fixed bearing 12 and the portable bearing 13 is designated 16.

Landscapes

• Engineering & Computer Science (AREA)
• Computer Security & Cryptography (AREA)
• Switch Cases, Indication, And Locking (AREA)
• Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
• Mechanisms For Operating Contacts (AREA)
• Clamps And Clips (AREA)
• Details Of Connecting Devices For Male And Female Coupling (AREA)
• Means For Warming Up And Starting Carburetors (AREA)
• Breakers (AREA)
• Tumbler Switches (AREA)
• Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=7906215

Family Applications (1)

Country Status (9)

Families Citing this family (2)

Citations (6)

Family Cites Families (2)

• 1999
  • 1999-04-28 DE DE19919417A patent/DE19919417A1/de not_active Withdrawn
• 2000
  • 2000-04-17 TR TR2001/03115T patent/TR200103115T2/xx unknown
  • 2000-04-17 ES ES00929303T patent/ES2202124T3/es not_active Expired - Lifetime
  • 2000-04-17 DE DE50002650T patent/DE50002650D1/de not_active Expired - Lifetime
  • 2000-04-17 BR BR0010067-6A patent/BR0010067A/pt not_active Application Discontinuation
  • 2000-04-17 EP EP00929303A patent/EP1173865B1/de not_active Expired - Lifetime
  • 2000-04-17 WO PCT/DE2000/001196 patent/WO2000067274A1/de active IP Right Grant
  • 2000-04-17 CN CNB008077460A patent/CN1174458C/zh not_active Expired - Fee Related
  • 2000-04-17 AT AT00929303T patent/ATE243884T1/de not_active IP Right Cessation
  • 2000-04-28 AR ARP000102027A patent/AR023620A1/es unknown

Patent Citations (6)

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