• 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 electrical overload cut-out has upper contacts (1) which are lifted from lower contacts (2). An electromagnetic release (9) which lifts an arm (11) which in turn raises a vertical contact carrier (12) has a cross member carrying the upper contacts. This acts against a toggle lever arrangement supported above the cross member. This has a shallow U shaped piece (16) to the ends of which are secured by hinge pins (6) two levers (5) with pins (7) which slide in a slot in an upper member (4) attached to the switch traverse (3). A hairpin shaped spring (8) between the levers, holds their pins at the ends of the slot (4a).
    公开号:SU907630A1
    申请号:SU777770005
    申请日:1977-09-06
    公开日:1982-02-23
    发明作者:Аккерман Лотар；Будде Иоахим
    申请人:Комбинат Феб Электроаппатате Верке 1193,Берлин (Инопредприятие)；
    IPC主号:
    专利说明:

    (5A) TOKOO-BORDER AUTOMATIC
    The invention relates to an automatic current limiting switch with a twice interrupted contact system, in which the movable bridge of contact elements 5 is connected by a spring of contact force to a switching beam, controlled by a locking mechanism, and in which the bridge of contact elements forms fixed contact elements , electrodynamically active conductive loops that, either alone or in conjunction with the electromagnetic cortex, result in a disconnecting and uniting The contact elements are independent of the locking mechanism and in which a system of levers is pivotally attached to the bridge of contact elements. It consists of two levers, two contact elements that are hinged to the bridge contact elements, between which the contact spring force acts, and which further has a lever system that is moved by her dead center. 25 SWITCH
    权利要求:
    Claims (3)
    [1]
    To pivotally attached to the bridge of the contact elements of the two levers hinged under one lining. These two pads form a pair of levers that are moved through a dead center point that is pivotally connected at the hinge point of the levers to the body traverse. In the case of a short circuit, the bridge of contact elements during electrodynamic repulsion or impact of an electromagnetic core moves by means of a spring of a contact system through the dead point of the levers of the lever system into the open position and holds in this position, which corresponds approximately to the final position of the off state neither This achieves an effective lengthening of the light arc, as well as an effective current limiting and reliably resolves the danger of a return jump of the bridge of contact elements. 3E, in a contact device, the levers hinged to the bridge of the contact elements must have a relatively large length, since they carry a spring and two lever plates that are placed one above the other. These elements sticking into the space of the light arc quenching cause the danger of a short arc of the light arc. In addition, these relatively large elements must also be accelerated when scattering the bridge of contact elements, which negatively affects the opening speed and current limiting. Next, changes in the contact force of the friction effect on a plurality of hinge points are obtained. Installation is inconvenient. , The center of each contact pole must be placed an insulated rod in the switching traverse su for hinge attachment of lever elements. The purpose of the invention is to improve the automatic switch with respect to the speed of opening of the bridge of contact elements and more effective current limiting. The basis of the proposed task is to develop such a lever system so that the number of hinge points, the accelerated masses and the dimensions of the contact system, especially those parts that stick out in the arc light quenching space, decrease. The goal is achieved by the fact that these two levers connected by hinges on the bridge of contact elements are formed as pressure plates which themselves are moved by a dead center knee-lever pair, and the ends of the levers opposite to the hinge point on the bridge of contact elements are movably mounted on the cross beam and loaded by the force of the contact spring. Moreover, the switching traverse has elongated holes or in which the support necks of the pressure pads are engaged. In addition, on the pressure plates, the guide plates are connected at the hinges, which, in turn, are movably connected to the switching traverse. Moreover, the contact spring is formed by a torsion spring or a compression spring that loads the pressure pads or guide pads. The proposed design of the contact system makes it possible to reduce the number of hinge points and the size of the contact system itself, especially the parts sticking into the blanking space, and thereby achieve an increased reliability of operation. Instead of two approximately contactable bridges of the contact elements of the levers and the springs of the contact force, two pressure plates now rotate, which represents a decrease in the accelerated mass and leads to an increase in the softening speed and to a more rapid rise of the arc light voltage. The elements of the lever system are located in the area of the firing line from the arc of light, thus eliminating the danger of a short circuit of the arc of light. FIG. 1 shows the switch in the on position; in fig. 2 switches with a scattered contact bridge (the position is open) due to the effect of a short circuit current (switching traverse in the on position); in fig. 3 - the switch in the off position; in fig. 4 shows a section in FIG. one; in fig. 5 and 6 are two additional examples of making switch contacts. The conductor consists of a bridge 1 of contact elements, which in the switched on state forms a conductive connection between two stationary switching elements 2 and 3 of the coil of the electromagnetic fuse 9 and of the conductor of the thermal fuse (not shown in the drawings). The conductor extends to external terminals (not shown in the drawing), to which the conductor is connected on one side and the load on the other. The conductor to the fixed switching elements 2, together with the contact bridge 1, forms two electrodynamically active conductive loops that open its action contacts. The fuses have a functional connection (not shown in the drawing) with a device for arbitrary switching, with which the switching trajectory of version 3 is put in the on position (Fig. 1) or in the off position (Fig. 3). the action and moves the switching yoke 3 to the off position (Fig. 3) The electromagnetic pre-fuse has a bore 10, which when the threshold value of the current is reached in case of a short circuit through the lever 11 and the rod 12 to mos 1 ntaktnyh elements and contributing to a movement of the interrupter due to electrodynamic repulsion between conductive loops. Available, pivotally mounted on the bridge 1 of the contact elements, the levers are made as pressure plates 5 and form the rosy system itself, moved through the dead point. Moreover, the ends of the levers located opposite the hinge points 6 move due to the hinge journals 7 in the slits ta of the control. These two control slots ka are cut from the arms of the handle k, which is screwed back to the switching yoke 3 and which also carries an axial spring 8, which represents the contact force. Its knees abut on the hinge journals J. In accordance with the position of the pressure plates (see Fig. 1), the force of the spring 8 acting on the hinges of the necks 7 is distributed to its components along the slits ta of the control and on the pressure plates 5, and the resultant of the power components, transmitted along the pressure plates, constitutes the contact force acting on the mos of the contact elements 1 and holding it in a closed position. The bridge 1 of the contact elements 1 expediently consists of a conductive part of an electrically well-conducting material that carries the carrying contact elements 1 a and of the supporting element 1c, riveted and screwed to a bridge of a mechanically stable light, thermally good conductive material, for example, from an alloy based on aluminum. This carrier element 1c reinforces the bridge of the contact elements and increases the heat release surface. The bridge of contact elements 1 is driven to ensure correct position with the help of holes 1c in the switching crossmember 3 In the event of a short circuit, the bridge 1 contact elements with two pressure; the lining 5 moves under the action of electrodynamic forces and under the action of the rod abruptly through the dead center position of the pressure plates , and the power components acting on the bridge of the contact elements change their direction and hold the bridge of the contact elements in the open position (see. Figure 2) before the mechanism of The oxidation device, which has been cleared while the electromagnetic fuse box 9 is being moved, has not transferred the switching yoke 3 to the on state. With the help of the ribs 13 pressed into the lid, the bridge of the contact elements returns during switching off movement of the switching beam 3 to the switching position (Fig. 3). The advantage of the contact arrangement is that the number of hinge points and the dimensions of the contact system, especially light arc reduced. The danger of the light arc arising between the levers mounted on the bridge contact elements is eliminated. The accelerated masses are reduced, as a result of which a higher opening speed and a higher incidence of the light arc are achieved; as well as better current limit. The slits for controlling the hinge journals 7 can be made in the form of two additional control pads (Fig. 5). Further, the spring for the contact pressure can be made in the form of a spiral pressure spring 15, which operates between two control pads (Fig. 6) or between hinges 7 A further improvement in the current-limiting properties is possible if the handle C is made of ferromagnetic material and extended downward so that it continues up to the level of the bridge of the contact elements 1. This can be used ektromagnitnoe force action of iron crate, which acts on tokovodny wire so that it crate (in danvt pulled into the iron-dimensional case - the handle). Claim 1. The current-limiting automatic switch with double interrupted contact system in which the movable bridge of the contact elements is spring-loaded connected to the switching cross-beam controlled by the locking mechanism and in which the bridge of the contact elements with the carriers of the fixed contact elements are electro-dynamically connected current loops, which themselves or in conjunction with the electromagnetic cortex cause the lifting of the contact elements imo from the locking mechanism and in which a system of levers acts on the bridge of contact elements, consisting of two levers that are connected to the hinges pax, while a contact pressure spring acts and which, moreover, has a knee-lever system moving beyond the dead center, characterized in that these two levers connected by hinges on the bridge of the contact elements are formed as pressure plates, which themselves are a knee-lever pair moving beyond the dead center, the ends of the levers opposite the ball irnomu item on the bridge contact elements mounted on the circuit Roll traverse and laden contact pressing force of the spring.
    [2]
    2. The switch according to claim 1, characterized in that the switching yoke has an elongation of a hole or a slit in which the support necks of the pressure pads are engaged.
    [3]
    3. The switch according to claim 1, characterized in that on the pressure plates, the guide plates are connected on hinges, which in turn are movably connected to a switching rail. C. A switch according to claim 1, characterized in that the contact pressure spring is formed by a torsion spring or a compression spring that loads the pressure pads or guide pads.
    13
    RL
    / J
    IS
     .
    V:
    FIG. 6
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    同族专利:
    公开号 | 公开日
    PL201099A1|1978-05-08|
    CS201631B3|1980-11-28|
    BG31343A1|1981-12-15|
    DE2735304A1|1978-04-06|
    DD127737A2|1977-10-12|
    HU175458B|1980-08-28|
    PL104947B1|1979-09-29|
    IN148520B|1981-03-21|
    RO73967A|1981-09-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4633207A|1985-04-01|1986-12-30|Siemens Energy & Automation, Inc.|Cam following bridge contact carrier for a current limiting circuit breaker|
    DE3637418C2|1986-11-03|1989-09-28|Kloeckner-Moeller Elektrizitaetsgesellschaft Mbh, 5300 Bonn, De|
    DE4337344B4|1993-11-02|2005-08-25|Moeller Gmbh|Current limiting contact system for circuit breakers|
    DE102008016036A1|2008-03-28|2009-10-01|Abb Ag|Installation switching device with a double break|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DD19505676A|DD127737A2|1976-09-30|1976-09-30|CURRENT-LIMITING SELF-SWITCH|
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