Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
  • H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
  • H01H13/56—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state upon the next application of operating force
  • H01H13/60—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state upon the next application of operating force with contact-driving member moved alternately in opposite directions
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
  • H01H13/02—Details
  • H01H13/12—Movable parts; Contacts mounted thereon
  • H01H13/20—Driving mechanisms
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
  • H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
  • H01H13/56—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state upon the next application of operating force
  • H01H13/562—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state upon the next application of operating force making use of a heart shaped cam
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
  • H01H9/0072—Details of switching devices, not covered by groups H01H1/00 - H01H7/00 particular to three-phase switches

Definitions

• the invention relates to an electrical switch according to the preamble of claim 1.
• electrical switches serve as mains switches.
• the switch must be suitable for switching a high load.
• the invention has for its object to provide an electrical switch suitable for switching high powers with a short actuation path.
• the electrical switch should be usable as a power switch in control panels equipped with short-stroke keys, so as to be adapted to the operating philosophy of today's domestic appliances.
• the actuating force for the electrical switch should not increase significantly.
• the actuating member is operatively connected to a lever, such that the lever performs a pivoting movement when the actuating member moves.
• the pivoting movement of the lever in turn now moves the switching contact for switching and / or the latching means for latching.
• the switch can thus advantageously be implemented in a latching and / or momentary version. In both cases, however, the pivoting movement of the lever achieves an enlarging translation of the path covered by the actuating element, so that even a small actuating path of the actuating element moves the switching contact and / or the latching means with a sufficiently large path.
• the switch having a housing can have several contact systems, each with a switch contact. For example, when used as a power switch, a two-pole configuration with at least two contact systems is appropriate.
• a common lever serves both to move the switching contact and / or the switching contacts and, if appropriate, also the latching means.
• the actuation path required for reliable locking and for fail-safe switching is achieved both on the locking means and on the contact system.
• no additional installation space is required in the switch housing, but the switch can be provided with a small housing for high loads.
• the switch contact is designed as a rocker.
• One end of the lever a single-armed lever being the end opposite the bearing of the lever, rests on the switch contact with an elastic force.
• the rocker-shaped switch contact is then switched over.
• This configuration ensures that the actuating force for moving the actuating member has at most a slight influence on the contact force exerted by the switching contact.
• the lever can have a sleeve in which a compression spring is arranged to exert the elastic force. This compression spring acts on a control cam, which in turn acts on the switch contact, which also contributes to the compactness of the switch.
• the locking means can consist of an approximately heart-shaped locking curve and a pin engaging in the locking curve.
• the latching curve can preferably be moved by means of the lever.
• the locking curve is then expediently arranged on one side of the lever, specifically with a one-armed lever on the side approximately opposite the bearing, which contributes to a particularly efficient use of the space available on the lever.
• the pin can also be designed approximately in the manner of a bracket. One end of the temple is held in the housing of the switch and the other end of the bracket engages as a pin in the locking curve.
• the latching curve is moved, the pin is then subjected to an elastic force which is opposite to the deflection by the latching curve and fails to reach the latching position in the heart-shaped latching curve or also out of the latching position.
• Such a latching switch works very reliably.
• the electrical switch is preferably designed as a short-stroke pressure switch.
• the actuating member is designed as an essentially linearly movable pusher.
• the pusher can be moved against the force of a spring and a part of it protrudes out of the housing and is accessible to the user manually.
• the lever passes through a receptacle on the actuating member, which is arranged on the part of the actuating member located inside the housing of the switch, approximately transversely to the direction of movement of the actuating member. Consequently, the lever is pivoted in a simple manner when the actuator is moved.
• the actuating member is designed as a pusher which is manually linearly movable by the user against a spring force.
• the actuator can be moved manually by the user between an initial and an actuated position in order to switch over the contact system. After switching the contact system, the actuator can automatically return to the starting position to return.
• the actuating member can be held in the respective position until the next actuation by, as already mentioned, the actuating member being locked in the actuating position by the latching means.
• the switching positions of the snap contact system can also be designed as locking positions.
• a rocker is pivotably mounted on the actuation member.
• the rocker acts on the lever by means of an arm, and expediently there on a type of backdrop, in order to establish the operative connection.
• a spring element clamped at one end to the lever, namely on the side opposite the bearing of the lever, which is in particular a leaf spring or a wire spring, cooperates with the rocker at the other projecting end by the projecting end into one Slot on the rocker engages.
• the lever is pivoted alternately between two stable end positions when the actuating member moves, namely from one end position to the other end position. These end positions in turn correspond to the switch positions of the contact system.
• the size of the switch can be optimized in the longitudinal or transverse direction with respect to the direction of movement of the actuating member.
• the lever and / or the switching contact can be arranged approximately parallel or approximately perpendicular to the direction of movement of the actuating member.
• the advantages achieved by the invention are, in particular, that the switch can be operated with a short actuation path.
• the short-stroke switch according to the invention permits a uniform operating philosophy, for example in domestic appliances, where a short-stroke circuit breaker can also be used in the control panel with the already usual short-stroke keys for the logic control. Despite the small actuation distance, the switch achieves a large contact opening width.
• the switch according to the invention can be used universally since both high loads and control currents can be switched. There is a defined chronological sequence between the contact movements, namely opening or closing the contact system. If desired, this also enables a defined time offset between the contacts. Furthermore, the contact erosion of the contact system plays a minor role at most during the service life of the switch, in particular the switching point of the contact system remains approximately constant over the service life.
• FIG. 3 shows a section along the line 3-3 from FIG. 2,
• FIG. 4 shows a section along the line 4-4 from FIG. 2,
• FIG. 7 is a perspective view of the electrical switch seen approximately from the direction VII in FIG. 6, the contact system being in the switched-off state,
• Fig. 9 is a section along the line 9-9 in Fig. 6 and
• FIG. 10 shows a section along the line 10-10 in FIG. 6.
• the switch 1 shows an electrical switch 1 according to a first exemplary embodiment, which is suitable for switching a high load.
• the switch 1 can be used for example as a power switch for an electrical device.
• the switch 1 has a housing 2 shown only schematically and broken away in FIG. 1, which consists of a cover 3 and a base 4. At the top of the cover 3, an actuator 5 protrudes from the housing 2. The part of the actuator 5 protruding from the housing 2 is accessible to the user for manual operation of the switch 1.
• the actuating member 5 is designed as a pusher that is essentially linearly movable against the force of a spring 20, as can be seen in FIG. 4.
• the electrical connections 6 of the switch 1 visible in FIG. 3 are located on the underside in the base 4.
• the switch 1 has a three-pole contact system 7, as can be seen from FIG. 1. 3, the contact system 7 consists of a movable switching contact 8 and at least one fixed contact 9, each of which is connected to an electrical connection 6.
• the actuating member 5 can be moved manually between an initial and an actuating position, the actuating member 5 interacting with the switching contact 8 for switching the contact system 7 when it is moved.
• the contact system 7 in the switched-on state, in that the switch contact 8 rests on the fixed contact 9.
• the switching contact 8 is removed from the fixed contact 9, so that the contact system 7 is in the off state.
• the contact system can also be designed in such a way that the switching contact switches between two fixed contacts when the actuating member moves, but this is not shown further.
• the switch 1 also has a lever 10 which is located in the housing 2, as can be seen in more detail in FIG. 1.
• the actuator 5 is operatively connected to the lever 10, in such a way that the lever 10 performs a pivoting movement when the actuator 5 moves.
• the pivoting movement of the lever 10 in turn moves the switching contact 8 for switching the contact system 7, as can be seen from FIG. 3.
• it is a latching switch and the switch 1 has a movable latching means 11 which interacts with the actuating member 5 in the actuating position and can be seen in FIG. 2. In this case, the pivoting movement of the lever 10 in turn moves the latching means 11 for latching.
• FIG. 5 there is a receptacle 21 for pivoting the lever 10 in the actuating member 5, which is arranged on the part of the actuating member 5 located inside the housing 2 of the switch 1.
• the lever 10 passes through the receptacle 21 approximately transversely to the direction of movement of the actuating member 5. If the actuating member 5 is now moved, the lever 10 is carried in the receptacle 21 and pivoted in the process.
• An electrical switch 1 according to the invention according to a second exemplary embodiment is shown in an exploded view in FIG. 5.
• the switch 1 in turn has a housing 2, which consists of a cover 3 and a base 4. On one side of the cover 3, an actuator 5 protrudes from the housing 2.
• the actuating member 5 is designed as an essentially linearly movable pusher.
• electrical connections 6 of the switch 1 protrude, as can be seen in particular in FIGS. 9 or 10.
• the switch 1 also has a lever 10, which is located in the housing 2.
• the actuator 5 is operatively connected to the lever 10, in such a way that the lever 10 performs a pivoting movement between two end positions when the actuator 5 moves, as can be seen from FIGS. 7 and 8.
• the pivoting movement of the lever 10 in turn moves the switching contact 8 to switch the contact system 7. Due to the transmission of the movement of the actuating member 5 via the lever 10 to the switching contact 8, an enlarging translation of the path covered by the actuating member 5 is achieved. As a result, large distances for the switching contact 8 are made possible even with a short travel of the actuating member 5 during its manual movement, so that high powers can be switched by means of the contact system 7.
• the lever 10 is designed in the manner of a one-armed lever. At one end of the lever 10 there is a bearing 12 for rotatably mounting the lever 10 in the housing 2 of the switch 1.
• the receptacle 13 for the bearing 12 is located in the base 4, the bearing 12 expediently being able to be clipped into the receptacle 13.
• the lever 10 it is also possible to design the lever 10 approximately in the form of a fork with two bearings 12 lying opposite one another, as can be seen from FIG. 5.
• the contact system 7 is a snap contact system in that the switch contact 8 is designed as a snap switch contact, as can be seen from FIG. 9.
• the switch contact 8 is pivotally mounted in a cutting edge bearing 22 located on an electrical connection 6.
• An elastic means in the present case a tension spring 23, is attached at one end to the switching contact 8 and at the other end to the lever 10.
• the tension spring 23 is hooked into corresponding eyelets both on the switching contact 8 and on the lever 10 by means of end hooks.
• the eyelet on the lever 10 for fastening the tension spring 23 is located on the side opposite the bearing 12 of the lever 10, as can be seen in FIG. 7.
• the design of the switch contact 8 as a snap-switch contact causes the switch contact 8 to snap between the two end positions when the lever 10 moves.
• the spring element 27 is preferably designed in the manner of a leaf spring or a wire spring, as can be seen from FIG. 5. With its other projecting end, the spring element 27 interacts with the rocker 24 in such a way that the lever 10 is pivoted alternately from one end position to the other end position when the actuating member 5 moves. On the rocker 24 there is a receptacle 28 with a slot 29 for the projecting end of the spring element 27, as can be seen from FIG. 5.

Landscapes

• Push-Button Switches (AREA)
• Mechanisms For Operating Contacts (AREA)
• Switches With Compound Operations (AREA)
• Glass Compositions (AREA)
• Saccharide Compounds (AREA)
• Switch Cases, Indication, And Locking (AREA)
• Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Applications Claiming Priority (5)

Publications (2)

Family

ID=26010499

Family Applications (1)

Country Status (7)

Families Citing this family (5)

Family Cites Families (16)

• 2002
  • 2002-10-28 DE DE10250262A patent/DE10250262A1/de not_active Withdrawn
  • 2002-10-30 EP EP02802601A patent/EP1440455B1/fr not_active Expired - Lifetime
  • 2002-10-30 WO PCT/DE2002/004039 patent/WO2003041100A2/fr not_active Application Discontinuation
  • 2002-10-30 AU AU2002363340A patent/AU2002363340A1/en not_active Abandoned
  • 2002-10-30 DE DE50206595T patent/DE50206595D1/de not_active Expired - Lifetime
  • 2002-10-30 ES ES02802601T patent/ES2262894T3/es not_active Expired - Lifetime
  • 2002-10-30 AT AT02802601T patent/ATE324663T1/de not_active IP Right Cessation
• 2004
  • 2004-04-30 US US10/836,325 patent/US6965087B2/en not_active Expired - Lifetime

Non-Patent Citations (1)

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