Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H1/00—Contacts
  • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
  • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
  • H01H1/20—Bridging contacts
  • H01H1/2041—Rotating bridge
  • H01H1/205—Details concerning the elastic mounting of the rotating bridge in the rotor
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H1/00—Contacts
  • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
  • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
  • H01H1/20—Bridging contacts
• • 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
  • H01H13/14—Operating parts, e.g. push-button
• • 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
  • H01H13/62—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 manual release of a latch
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H3/00—Mechanisms for operating contacts
  • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
  • H01H3/14—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for operation by a part of the human body other than the hand, e.g. by foot
  • H01H3/141—Cushion or mat switches
  • H01H2003/145—Cushion or mat switches provisions for avoiding closure or contact damage during manufacturing or mounting
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H3/00—Mechanisms for operating contacts
  • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
  • H01H3/022—Emergency operating parts, e.g. for stop-switch in dangerous conditions
• • 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
  • H01H9/20—Interlocking, locking, or latching mechanisms
  • H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts

Definitions

• the present invention relates to a switching device.
• the invention more particularly relates to an emergency stop type switching device.
• an emergency stop device comprises a first assembly carrying the actuating member and a second assembly consisting of a contact block intended to be mounted on the first assembly.
• the contact block comprises a movable bridge supporting movable contacts actuated by the actuating member relative to fixed contacts between a closed position and an open position to respectively close or open an electrical circuit.
• the contacts are of normally closed type.
• the first set and the second set are mounted mechanically on either side of a wall.
• the contact block is therefore invisible to the user. It is therefore impossible for the user to know permanently if the first set is mounted on the second set. But a stall of one of the sets relative to the other no longer allows the device to work properly. Since an emergency stop device is intended to exercise a safety function, it is necessary that this device functions properly. For this, it is necessary to ensure that the first set is hooked to the second set.
• the object of the invention is to propose a new solution to ensure that the first set is mounted on the second set.
• This solution is simple in operation and is made in a limited space.
• a switching device which comprises: a first assembly comprising an actuating member that can take a rest position and an actuating position, a second assembly mounted on the first assembly and comprising a movable bridge carrying movable contacts actuated with respect to fixed contacts between a position of opening and a closing position for respectively opening or closing an electrical circuit according to the position of the actuating member, the movable bridge being operable in rotation about an axis of rotation and being able to take a third position to open the circuit when the first set is mechanically disconnected from the second set.
• the second assembly comprises actuating means for acting on the movable bridge on either side of its axis of rotation and in opposite directions.
• actuating means are for example included in a pusher operable between three positions corresponding to the three positions of the movable bridge.
• the actuating means comprise for example two cams made on the pusher and between which is interposed the movable bridge.
• the second assembly comprises a first spring biasing the pusher in translation.
• This first spring is for example helical type.
• the second assembly comprises a second spring biasing the movable bridge towards its closed position.
• This second spring is for example blade type.
• the movable bridge comprises two movable contacts disposed on either side of the axis of rotation and on two opposite faces of a support plate rotatably mounted around the axis of rotation.
• the three positions taken by the movable bridge are distinct, the third position taken by the movable bridge being a second open position of the electrical circuit.
• the switching device formed by the first set and the second set is for example an emergency stop device.
• the invention compared to the prior art, the invention therefore has the advantage of using the same mobile bridge to perform both the monitoring function of the assembly of the first set on the second set and the normal function. of the emergency stop type switching device. Therefore, even if the fixed and mobile are welded together, the actuation of the actuating member will come to open the contacts.
• the two functions being fulfilled by means of two distinct movable bridges, if the normally open contacts used for monitoring the mounting of the head are welded together, the actuation of the body Actuation can not be used to separate them. The assembly monitoring function of the first set on the second set can no longer be ensured.
• FIG. 1A shows the two separate sets of the switching device of FIG. the invention
• Figure 1 B shows the first set of the switching device correctly mounted on the second set, the actuating member being in the rest position
• Figure 1 C is the first set of the switching device properly mounted on the second set, the actuating member being in the actuating position
• FIGS. 2A to 2C show in more detail the second set in the three states defined in FIGS. 1A to 1C;
• FIG. 3 shows in perspective the pusher used in the second set of the device.
• FIG. 1 groups together FIGS. 1A to 1C.
• the invention relates to a switching device and more particularly to an emergency stop device, also called a punch switch.
• an emergency stop type switching device comprises two distinct sets 1, 2.
• the first assembly 1 comprises an actuating member 10 intended to be depressed in an emergency by the operator along an axis (X) to open an electrical circuit.
• the actuating member 10 can thus take a rest position (FIG. 1 B) in which it is not depressed leaving the electric circuit closed and an actuating position (Figure 1 C) in which it is depressed to open the electrical circuit.
• the second set 2 is a contact block for controlling the electrical circuit (not shown).
• a contact block generally comprises a housing 20 containing a pusher 21 (FIG. 3) on which the actuating member 10 acts and a movable bridge 22 carrying movable contacts 221, said movable bridge 22 being actuated in motion relative to to fixed contacts 201 between a closed position and an open position to respectively close or open the electrical circuit according to the position of the actuating member 10.
• the movable bridge 22 When the actuating member 10 is in the rest position, the movable bridge 22 is in the closed position of the electric circuit (FIG. 1B) and when the actuating member 10 is in the actuating position, the movable bridge 22 is in the open position of the electrical circuit (FIG. ).
• the switching device of the invention further comprises means for monitoring that the second set 2 is hooked on the first set 1. These means consist in keeping the electric circuit open as the first set 1 is mechanically disconnected from the second together 2.
• the movable bridge 22 of the second assembly 2 is of rotary type and is operable in rotation about an axis of rotation (A) included in a plane perpendicular to the actuation axis (X) of the actuating member 10.
• the movable bridge 22 can take three distinct positions around its axis of rotation (FIGS. 2A to 2C). The movable bridge 22 can thus take said closed position (FIG. 1B) when the first set 1 is correctly mounted on the second set 2 and the actuating member 10 is in the rest position, said open position ( FIG. 1C) when the first set 1 is correctly mounted on the second set 2 and the actuating member 10 is in the actuating position and a third position (FIG.
• the movable bridge 22 comprises a plate 220 rotatably mounted on a support 23, said plate 220 carrying two opposite faces each supporting a movable contact 221, the two movable contacts 221 being arranged on each side on either side. of the axis of rotation (A). Vis-à-vis each movable contact 221, the housing 20 of the second assembly 2 encloses a fixed contact 201 connected to the circuit electric to order.
• the movable bridge 22 is mounted on a spring, for example of the blade type 24 A urging about its axis of rotation (A) counterclockwise (S1) to its closed position, said spring 24 being housed between the plate 220 and the support 23 of the movable bridge.
• the pusher 21 is also mounted on a spring 25, for example of helicoidal type, housed in the bottom of the housing 20 of the second assembly 2 and urging the pusher 21 in translation along the axis (X) against the movement of the organ actuator 10 when the two sets 1, 2 are hooked. With a slide, the pusher 21 is guided in translation along the axis (X) in a groove formed on the housing 20 of the second assembly 2.
• a spring 25 for example of helicoidal type
• the second assembly 2 further comprises actuating means for actuating the movable bridge 22 in rotation between its positions by acting on the movable bridge on either side of its axis of rotation (A). , in directions parallel to the axis (X) and in opposite directions.
• actuating means comprise two cams 210, 21 1 ( Figure 3) formed on the pusher 21.
• the movable bridge is interposed between the two cams 210, 211 of the pusher 21 so that a first cam 210 of the pusher is capable of pressing a first face of the plate 220 of the movable bridge, on one side of the axis of rotation (A), to drive the latter in rotation in the clockwise direction (S2) and a second cam 21 1 the pusher is likely to press the opposite face of the plate 220 of the movable bridge 22, on the other side of the axis of rotation (A), to drive it in rotation in the clockwise direction (S2).
• the two cams 210, 21 1 therefore both drive the mobile bridge in rotation in the clockwise direction (S2), but, depending on the position of the pusher 21, they act in two directions substantially parallel to the axis (X) on the two opposite faces of the plate 220 of the movable bridge 22 and on either side of the axis of rotation (A) of the movable bridge 22, so as to confer thereon two distinct positions ( Figures 2A and 2C).
• the three distinct positions taken by the movable bridge 22 thus correspond to three positions taken by the pusher 21.
• the three positions are explained below:
• the pusher 21 When the first assembly 1 is mechanically disconnected from the second assembly 2, the pusher 21 is urged towards the outside of the housing 20 by the helical spring 25.
• the first cam 210 of the pusher then presses on one side of the axis of rotation ( A) and on the first face of the plate 220 of the movable bridge 22 to drive it in rotation clockwise (S2) against its leaf spring 24 and thus make it take the third position, leaving the electrical circuit open when the first set 1 is mechanically disconnected from the second set 2 ( Figure 2A).
• the first assembly 1 When the first assembly 1 is correctly mounted on the second assembly 2 and when the actuating member 10 is actuated towards its actuating position, it acts on the pusher 21 and compresses the coil spring 25 towards the bottom of the housing 20.
• the second cam 21 1 of the pusher 21 then presses on the movable bridge 22 on the other side of its axis of rotation (A) and on the second face of the plate 220 of the movable bridge so as to drive the latter in rotation clockwise (S1) and thus make him take his opening position of the electric circuit (Figure 2C).
• the solution of the invention is particularly simple inexpensive and of limited size.

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• Push-Button Switches (AREA)
• Mechanisms For Operating Contacts (AREA)
• Power-Operated Mechanisms For Wings (AREA)

Applications Claiming Priority (2)

Publications (2)

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Family Applications (1)

Country Status (12)

Cited By (1)

Families Citing this family (6)

Family Cites Families (21)

• 2008
  • 2008-10-07 FR FR0856780A patent/FR2936902B1/fr not_active Expired - Fee Related
• 2009
  • 2009-10-01 CN CN2009801371576A patent/CN102165546B/zh not_active Expired - Fee Related
  • 2009-10-01 AU AU2009301229A patent/AU2009301229B2/en not_active Ceased
  • 2009-10-01 MX MX2011001942A patent/MX2011001942A/es active IP Right Grant
  • 2009-10-01 KR KR1020117007929A patent/KR101195285B1/ko not_active IP Right Cessation
  • 2009-10-01 RU RU2011118445/07A patent/RU2470400C1/ru not_active IP Right Cessation
  • 2009-10-01 WO PCT/EP2009/062736 patent/WO2010040678A1/fr active Application Filing
  • 2009-10-01 JP JP2011530458A patent/JP5335924B2/ja not_active Expired - Fee Related
  • 2009-10-01 US US13/119,193 patent/US8497438B2/en not_active Expired - Fee Related
  • 2009-10-01 BR BRPI0920555A patent/BRPI0920555A2/pt not_active IP Right Cessation
  • 2009-10-01 EP EP09783627.4A patent/EP2332158B1/de not_active Not-in-force
• 2011
  • 2011-02-25 ZA ZA2011/01510A patent/ZA201101510B/en unknown

Non-Patent Citations (1)

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