EP0029489A2 - Commutateur à touche - Google Patents

Commutateur à touche Download PDF

Info

Publication number
EP0029489A2
EP0029489A2 EP80105558A EP80105558A EP0029489A2 EP 0029489 A2 EP0029489 A2 EP 0029489A2 EP 80105558 A EP80105558 A EP 80105558A EP 80105558 A EP80105558 A EP 80105558A EP 0029489 A2 EP0029489 A2 EP 0029489A2
Authority
EP
European Patent Office
Prior art keywords
key
rocker
key switch
shaft
frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP80105558A
Other languages
German (de)
English (en)
Other versions
EP0029489B1 (fr
EP0029489A3 (en
Inventor
Heinz Abitz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dr Eugen Sasse Bauelemente fur Die Elektro GmbH
Original Assignee
Dr Eugen Sasse & Co KG GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dr Eugen Sasse & Co KG GmbH filed Critical Dr Eugen Sasse & Co KG GmbH
Priority to AT80105558T priority Critical patent/ATE7548T1/de
Publication of EP0029489A2 publication Critical patent/EP0029489A2/fr
Publication of EP0029489A3 publication Critical patent/EP0029489A3/de
Application granted granted Critical
Publication of EP0029489B1 publication Critical patent/EP0029489B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • 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
    • 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
    • H01H13/568—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 the contact also returning by some external action, e.g. interlocking, protection, remote control
    • 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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/18—Distinguishing marks on switches, e.g. for indicating switch location in the dark; Adaptation of switches to receive distinguishing marks

Definitions

  • the invention relates to a push-button switch with a push-button shaft guided against its axial actuation direction in a frame, pretensioned in the rest position and actuating at least one contact spring set in its working position, and with a switching lock which locks the push-button shaft in the working position and releases it when pressed again.
  • Such key switches are preferably used in telecommunications systems, for example in telephone sets, to control the operating state, for example from the dialing state to the receiving state and vice versa, and on the other hand to control another function, such as listening in.
  • a push button switch of the type mentioned is already described in DE-PS 1 179 259.
  • This known pushbutton switch is designed for double-pressure actuation, a pushbutton shaft actuating the contact spring sets being locked by means of a key switch when depressed for the first time and releasable from the locked working position when depressed again.
  • the key switch used has a backdrop with a heart curve in which a guide pin fastened to the push-button shaft and movable with it slides and automatically ensures the locking or release of the push-button shaft when passing through the heart curve.
  • the object underlying the invention is therefore to provide a key switch of the type mentioned, the working position of which can be released without pressing a key.
  • this object is achieved in that the locking position of the key switch can be released independently of the key actuation by mechanical external control.
  • the external control of the switch lock can be carried out in a structurally very simple and reliable manner, and that in addition to the direct mechanical control, an electromagnetic triggering of the switch lock can also be used without a fundamental design change.
  • a particularly preferred embodiment of the push-button switch according to the invention is characterized in that the switch lock has a first element connected to the push-button shaft, which can be moved back and forth in the actuating direction thereof, and a second element attached to the frame of the push-button switch, which on the one hand is pretensioned into a rest position and is deflectable from this rest position on both sides approximately perpendicular to the direction of actuation of the first element, that the first and the second element are in engagement with one another at least during the part of the actuation path of the push-button shaft that includes the locking position, and that the second element, on the other hand, is controlled externally by the path its deflection and the direction of actuation of the push-button shaft, which is approximately perpendicular, can be moved out of engagement with the first element.
  • the locking position is triggered in a structurally simple manner by the fact that the switch lock, in addition to its conventional function, can also perform a movement perpendicular to the normal movement plane, which leads to the release of the locking engagement of the parts of the switch lock.
  • the second element is attached to a rocker pivotally mounted on the frame, and that the rocker is pretensioned against the frame in the rest position and pivotable in the triggering direction by mechanical external control against the pretension.
  • the direction of movement of the key switch which is perpendicular to the normal plane of movement, is brought about by tilting the rocker, ensuring that the rocker returns under its spring preload to its initial position immediately after the locking position is released, so that the normal function of the key switch is restored.
  • the rocker To trigger the pivoting movement, provision is advantageously made for the rocker to be provided with an actuating element for external control which is arranged at a distance from the axis of the pivoting bearing.
  • the lever arm corresponding to the distance determines the control force required to release the locking position in this embodiment.
  • the locking position is triggered not only when the handset causes the movement, but also when the handset returns, when the handset is removed. It is particularly advantageous if the actuating element can be moved by engagement with one of two mutually angled sliding surfaces on a release lever against the bias of the rocker, so that the sliding surfaces corresponding to the placement or lifting of the handset each equally solve the locking position can bring about.
  • the first element of the switch lock is a cam follower that is fixedly attached to the push-button shaft and that the second element is a switching link with a heart curve that is movably attached to the rocker.
  • the switch lock can advantageously also be designed in such a way that the first element of the switch lock is a switching link with a heart curve provided on the push-button shaft, and that the second element is a cam follower that is movably attached to the rocker.
  • the cam follower can be designed as a guide pin or as a freely movable ball on a predetermined path.
  • a flag indicating the respective switch position is arranged in the button head, so that the operator can recognize the operating state at any time and incorrect operation is prevented.
  • the push button switch consists of a frame 10 with a base 11, on which, on the one hand, a bearing block 13 for a release lever 15 and, on the other hand, an upwardly projecting holder 12 for the actual switch unit 30 are molded or attached are.
  • the bracket 12 and the bearing block 13 are aligned with one another in such a way that one end of the release lever 15 which is pivotably mounted on the bearing journal 14 of the bearing block 13 can engage with an actuating element 72 of the switch lock 60 of the switch unit 30.
  • FIG. 1 the push button switch
  • the arm 82 of the release lever 15 projecting from the switch unit 30 can be actuated by a fork plunger 16 which moves together with the fork 18 of a telephone set when a handset 17 is placed or removed.
  • a fork plunger 16 which moves together with the fork 18 of a telephone set when a handset 17 is placed or removed.
  • the switch unit 30 has a frame 31 which is attached to the holder 12 of the frame 10 in a suitable manner, e.g. is fastened by screwing.
  • a push button shaft 32 is slidably guided in the longitudinal direction.
  • the pushbutton shaft 32 consists of a tubular sleeve 34 and a switching cam 33 attached or molded to the lower end thereof, which is provided on its lower outer peripheral edge with bevels (FIG. 3) for actuating the contact spring sets 39 which are insulated in a contact base 40.
  • a key head 36 is attached at the upper front end of the key shaft 32, outside the frame 31 and the frame 10.
  • This key head 36 is used on the one hand for manual actuation of the key switch and on the other hand as a protective cap for the indicator 50 accommodated in its interior cavity.
  • the key head consists of a material which is transparent at least on the upper end face, e.g. made of plastic.
  • the display part of the indicator 50 which is visible through the transparent button head 36, is designed like a conventional star indicator and therefore does not require any de waisted explanation. It consists of a cap-shaped diaphragm 52, divided into sectors of 60 ° in each case, and a star bell 51 which can be rotated back and forth within this diaphragm 52 by approximately 60 ° and is provided with sector-shaped color markings, which is particularly clear in FIGS. 3 and 4 according to its design is recognizable.
  • a spindle 53 Projecting axially downward on this star bell 51 is a spindle 53, which is received in an axial bore 41 in the tubular sleeve 34 of the push-button shaft 32 and is rotatably guided therein in the radial direction.
  • the spindle 53 is generally cylindrical in shape, but extending over part of its length is a spiral helical surface 54 which is axially closed on both sides by radial shoulders 57 at a distance from the respectively adjacent ends of the spindle, so that at both ends of the spindle in each case a cylindrical spindle collar 58 remains, which ensures the radial guidance of the spindle 53 within the axial bore 41 during rotation.
  • the axial fixing of the spindle 53 is ensured by a spindle counter bearing 56 formed centrally in the diaphragm 52, on which the uppermost point of the star bell 51 is supported in a rotatably supported manner.
  • a switching pin 55 is provided transversely to the direction of actuation of the push-button shaft 32 and runs diametrically through its longitudinal central axis, the two ends of which are anchored in diametrically opposite bores of the frame 31 of the switch unit 30.
  • this switching pin penetrates two diametrically opposed, longitudinal slots 35 in the tubular sleeve 34 of the push-button shaft 32 and, on the other hand, it slidably abuts the helical surface 54 of the spindle 53 of the indicator 50.
  • This arrangement ensures that the helical surface 54 of the spindle 53 slides on the switching pin 55 defined in the frame 31 and forcibly executes a rotary movement when the push-button shaft 32 is depressed or when it returns from the locking position.
  • the star bell 51 fixedly connected to the spindle 53 is rotated by a predetermined angle, so that the color markings of the star bell 51 are either covered by the fixed aperture 52 or released and made visible.
  • the switch positions of the key switch are thus forcibly mechanically coupled directly to the two display positions of the indicator 50.
  • the switch lock 60 of the embodiment of the push-button switch shown in FIGS. 1 and 2 has a rocker 70 which can be pivoted in bearings 71 attached to the frame 31 of the switch unit 30 about a rocker axis aligned transversely to the actuating direction of the push-button shaft 32.
  • the part of the rocker 70 which projects downward from the rocker axis 64 is equipped with an actuating element 72 in the form of a freely rotatable roller and is biased to the left in FIG. 1 away from the frame by means of a return spring 73 which is supported on the frame 31 .
  • a shift link 65 in the form of an arm which can be moved on one side about a pivot bearing 63.
  • a heart curve 66 of a known shape which is open toward the frame 31 of the switch unit 30, is formed in this switching link 65.
  • a transverse recess 69 which is interspersed with play by a spring pin 67 anchored to the rocker 70.
  • the spring pin 67 carries springs 68 on both sides of the shift gate, which are supported on the one hand on the rocker 70 and on the other hand on the associated side of the shift gate 65, so that the heart curve 66 of the shift gate is biased into a predetermined rest position and can be deflected from this rest position to both sides .
  • the second element of the switch lock 60 which interacts with the heart curve 66 of the switching link 65 is designed in the form of a guide pin 61 anchored in the push-button shaft 32 and projecting laterally transversely to its longitudinal axis.
  • This guide pin protrudes through an elongated recess 62 formed in the frame 31 parallel to the direction of movement of the push-button shaft and beyond the outer surface of the frame 31 so that its free end can engage the switching link 65.
  • the pushbutton shaft 32 is pressed downward again in the actuating direction, as a result of which the guide pin 61 emerges from the notch groove 66b along the heart curve 66 to the bottom right. If the push-button shaft is released in this fully pressed position, it moves together with the guide pin 61 under the action of the springs 37 upward against the actuation direction and the guide pin 61 slides upward on the right edge of the switching link 65 (FIG. 6), until it returns to its released rest position above the shift gate 65. During this upward movement of the guide pin 61, the switching link 65 is pivoted counter to its spring preload to the left in FIG.
  • the switching link 65 together with the rocker 70 is moved away from the frame 31 in such a way that the guide pin 61 slides out of the locking groove 66b of the heart curve 66 and, together with the push-button shaft 32, freely moves upward against the actuating direction under the action of the springs 37 can move so that the key shaft 32 comes to its rest position in which the contact spring sets 39 are not actuated.
  • a one-time pivoting of the rocker 75 carrying the rocker switch 65 of the key switch 60 thus ensures that the push button switch returns to its rest position if it was in the locked position before actuation of the rocker 70 or remains in its rest position if it had previously been used .
  • the two-armed trigger lever 15 is pivotally mounted on the frame 10 of the pushbutton switch, the lever arm facing the switching lock at the free end of which carries two mutually angled sliding surfaces 80 and 81, each of which can slide along the actuating element 72 when the trigger lever 15 is pivoted and this presses against the return spring 73 towards the frame 31, that is to say the rocker 70 in the desired sense to release the switching lock pivots.
  • Fig. 1 it can be seen that this function is possible starting from two pivot positions of the trigger lever 15. Starting from the position of the trigger lever 15 shown in solid lines, the sliding surface 81 causes the rocker 70 to pivot, while in the reverse movement, starting from the position of the trigger lever 15 shown in broken lines, the sliding surface 80 engages with the actuating element 72.
  • the other lever arm of the release lever 15 is designed as a fork-like slotted arm 82, the fork prongs of which engage around the fork plunger 16 of the fork 18 of a telephone set (not shown).
  • the fork plunger 16 is moved downward in FIG. 1, whereby the release lever 15 is pivoted upward from the position shown in solid lines in FIG. 1.
  • the release lever 15 is automatically pivoted out of the position shown in dash-dotted lines in FIG. 1, the switch lock 60 again being unlocked in the manner described above.
  • the fork opening of the slotted arm 82 can be adjusted by means of a screw 83.
  • This exemplary embodiment of unlocking the switch lock 60 is particularly advantageous in practice in the case of a telephone apparatus if, for example, a listening device or a loudspeaker device is switched on by the push-button switch. Every time the handset is removed from the fork or put back on it, it is ensured at the same time that the key switch returns to its unlocked rest position is brought, in which, for example, the listening device is switched off. This can ensure that the monitoring device does not remain switched on inadvertently.
  • FIGS. 1 to 6 a further embodiment of the push button switch according to the invention is shown.
  • the parts corresponding to the embodiment of FIGS. 1 to 6 are provided with the same reference numerals.
  • this exemplary embodiment differs from the one explained above, in particular in the design of the switch lock 100.
  • the switch gate of the switch lock 100 is formed in the side face of the push-button shaft 85, that is to say with the push-button shaft when actuated Heart curve 84, which can be moved up and down, is also of conventional construction.
  • the second element of the switch lock 100 which interacts with the heart curve 84 for locking purposes is shown as a guide pin 74 which is connected to a rocker 75 which is pivotably mounted on the outer surface of the frame 31 of the pushbutton switch. As shown in FIG. 8, this rocker 75 can be pivoted by means of a rocker shaft 96 in bearing blocks 97 attached to the frame 31.
  • a spirally wound spring 78 is attached to the rocker shaft 96 and has two free straight legs 78a and 78b.
  • the lower leg 78a of the spring 78 is supported on the frame 31, while the upwardly projecting leg 78b is fastened to the outside of the rocker 75 by means of a spring fixation 95.
  • This arrangement of the spring biases the rocker 75 against the frame 31 in the rest position.
  • the part of the rocker 75 located below the rocker axis 96 has an actuating element 72 designed as a freely rotatable roller, which, as shown in FIG. 7, can engage with the sliding surfaces 80 and 81 of a release lever 90 for pivoting the rocker 75.
  • a recess 77 is formed, in which a slide 76 is received so as to be displaceable transversely to the actuating direction of the push-button shaft 85.
  • the guide pin 74 is attached to the slide 76 and, in the rest position of the rocker 75, projects through a slot 98 in the frame 31 and can engage with the heart curve 84 of the push-button shaft 85.
  • the laterally displaceable in the rocker 75 together with the guide pin 74 slide 76 is biased by the upper arm 78b of the spring 78 into a rest position from which it can be deflected on both sides when the guide pin 74 engages with the heart curve 84.
  • two guide brackets 79 are attached to the outside of the rocker 75.
  • the Füh can - approximately pin 74 and the carriage 76 of the rocker 75 is replaced with a suitable known design of the heart cam 84 by a cross in a groove of the rocker 75 freely movable ball.
  • the trigger lever 90 shown in the exemplary embodiment in FIG. 7, the function and mode of actuation of which completely correspond to the trigger lever 15 of the exemplary embodiment in FIG. 1, is designed in a special way.
  • Be the switch lock 100 facing away from the lever arm is constructed as a fork-shaped slotted arm 91, the pivotable and fixable agerloches at an angle to the main body of the release lever 90 by means of an L 94 is mounted.
  • a clamping screw 93 which can be screwed into the main body of the release lever 90, projects through.

Landscapes

  • Push-Button Switches (AREA)
EP80105558A 1979-11-22 1980-09-16 Commutateur à touche Expired EP0029489B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80105558T ATE7548T1 (de) 1979-11-22 1980-09-16 Tastschalter.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2947147 1979-11-22
DE7933006U DE7933006U1 (de) 1979-11-22 1979-11-22 Tastschalter
DE2947147A DE2947147C2 (de) 1979-11-22 1979-11-22 Tastschalter

Publications (3)

Publication Number Publication Date
EP0029489A2 true EP0029489A2 (fr) 1981-06-03
EP0029489A3 EP0029489A3 (en) 1982-03-10
EP0029489B1 EP0029489B1 (fr) 1984-05-16

Family

ID=25782084

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80105558A Expired EP0029489B1 (fr) 1979-11-22 1980-09-16 Commutateur à touche

Country Status (2)

Country Link
EP (1) EP0029489B1 (fr)
DE (2) DE2947147C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039402A3 (en) * 1980-05-02 1982-05-05 Dr. Eugen Sasse Gmbh & Co. Kg Key switch
FR2729786A1 (fr) * 1995-01-20 1996-07-26 Itw De France Dispositif de commande electrique et appareil le comportant

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3528396A1 (de) * 1985-08-07 1987-02-19 Sasse Eugen Bauelemente Tastschalter

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1251812B (fr) * 1967-10-12
DE1011928B (de) * 1954-12-14 1957-07-11 Siemens Ag Tastenschalter fuer Fernmeldeanlagen
DE1064562B (de) * 1955-08-12 1959-09-03 Tesla Np Leuchttaste fuer Fernmeldeanlagen
DE1415591C3 (de) * 1961-01-18 1973-10-11 Widmair Geb. Hofmann, Emmy, 8023 Grosshesselohe prucktastenanordnung
DE1179259B (de) * 1963-02-08 1964-10-08 Eugen Sasse K G Dr Drucktaste mit Kontaktfedersaetzen fuer Fernmeldeanlagen
DE2653470A1 (de) * 1976-11-25 1978-06-01 Westdeutscher Rundfunk Tastschaltersystem fuer elektromagnetische und mechanische verriegelungen
GB1589828A (en) * 1977-10-25 1981-05-20 Standard Telephones Cables Ltd Electrical switch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039402A3 (en) * 1980-05-02 1982-05-05 Dr. Eugen Sasse Gmbh & Co. Kg Key switch
FR2729786A1 (fr) * 1995-01-20 1996-07-26 Itw De France Dispositif de commande electrique et appareil le comportant

Also Published As

Publication number Publication date
DE2947147A1 (de) 1981-05-27
EP0029489B1 (fr) 1984-05-16
DE7933006U1 (de) 1980-09-11
EP0029489A3 (en) 1982-03-10
DE2947147C2 (de) 1982-06-24

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