EP4511713B1 - Druckknopf - Google Patents

Druckknopf

Info

Publication number
EP4511713B1
EP4511713B1 EP23720094.4A EP23720094A EP4511713B1 EP 4511713 B1 EP4511713 B1 EP 4511713B1 EP 23720094 A EP23720094 A EP 23720094A EP 4511713 B1 EP4511713 B1 EP 4511713B1
Authority
EP
European Patent Office
Prior art keywords
bar
pusher
spring
support
button
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.)
Active
Application number
EP23720094.4A
Other languages
English (en)
French (fr)
Other versions
EP4511713A1 (de
EP4511713C0 (de
Inventor
Hervé Carton
Damien BEURDELEY
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.)
Thales Avionics SAS
Original Assignee
Crouzet SA
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 Crouzet SA filed Critical Crouzet SA
Publication of EP4511713A1 publication Critical patent/EP4511713A1/de
Application granted granted Critical
Publication of EP4511713B1 publication Critical patent/EP4511713B1/de
Publication of EP4511713C0 publication Critical patent/EP4511713C0/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/02—Controlling members for hand actuation by linear movement, e.g. push buttons
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G5/00—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member
    • G05G5/03—Means for enhancing the operator's awareness of arrival of the controlling member at a command or datum position; Providing feel, e.g. means for creating a counterforce
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • 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
    • H01H2215/00—Tactile feedback
    • H01H2215/034—Separate snap action
    • H01H2215/042—Permanent magnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/02—Energy stored by the attraction or repulsion of magnetic parts

Definitions

  • the invention relates to a push button.
  • the invention aims to produce a push button whose assembly is simplified by the use of a bayonet locking mechanism while remaining simple to manufacture.
  • the invention therefore relates to a push button conforming to claim 1.
  • FIG. 1 represents a push button 2 in an assembled state.
  • This button is typically intended for use as a human-machine interface.
  • a button 2 is incorporated into an aircraft instrument panel or on an aircraft control handle.
  • body 4 is a tubular body inside which are housed all the elements of button 2.
  • the cross-section of body 4 is substantially circular.
  • the pusher 6 moves reversibly between its rest and depressed positions by sliding inside the body 4 along a vertical axis 10.
  • the rest position is the position occupied by the pusher 6 when there is no external force.
  • the rest position is therefore a stable position.
  • the upper end of the pusher 6 is less deeply embedded inside the body 4 than in the depressed position.
  • the upper end of the pusher 6 protrudes above the body 4.
  • the electronic circuit 8 includes a printed circuit board 12 on which are mounted the various electrical and electronic components necessary for the operation of the button 2.
  • the circuit 8 includes electrical connectors 14 for electrically connecting the button 12 to a power source and to the processing unit. These electrical connectors 14 are mounted on the underside of the board 12.
  • the circuit 8 also includes one or more detectors 16 of the pressed position of the push button 6 mounted on an upper face of the board 12.
  • the detector 16 is a magnetic field detector. It detects the pressed position when the amplitude of the magnetic field passing through it crosses a predetermined threshold or when the change in the direction of the magnetic field crosses another predetermined threshold. When the pressed position is detected by the detector 16, this information is transmitted to the external processing unit via, for example, a wired connection to the connector 14.
  • the magnetic piece 20 is directly attached, by magnetic attraction, to the bar 24.
  • the magnetic piece 20 is a permanent magnet and the bar 24 is made of magnetic material such as magnetic stainless steel.
  • the support 22 is a hollow solid of revolution whose axis of revolution coincides with the axis 10.
  • the hollow inside the solid 22 allows the passage of the bar 24 when it is received in the slots 36 and 38.
  • this hollow is a cylinder of revolution which opens onto the upper face of the support 22.
  • the upper part 34 here has the shape of a crown centered on the axis 10 and with a rectangular cross-section. Its upper face serves as a bearing surface for the spring 26.
  • slots 36 and 38 are located opposite each other on either side of axis 10.
  • slots 36 and 38 are straight slots with a rectangular cross-section that extend primarily vertically.
  • the width of slots 36 and 38 allows the bar 24 to be inserted into the support 22.
  • the bar 24 When the bar 24 is inserted into the support 22, it has a central portion 40 located inside the recess of the support 22.
  • the height of slots 36 and 38, in the Z direction, allows the support 22 to slide along the axis 10 between a high position, shown on the figure 3 and a low position represented on the figure 4 even when the bar 24 is stationary and inserted through the support 22.
  • the upper part 34 In its upper position, the upper part 34 is away from the bar 24 and the magnetic part 20 is glued to the central portion 40 of the bar 24. In the lower position, the upper part 34 is directly resting on the bar 24 and the magnetic part 20 is away from and detached from the bar 24.
  • the height of slots 36 and 38 is greater than 1 mm or 2 mm. This height is also generally less than 20 mm or 10 mm.
  • the bar 24 is made of a magnetic material attracted to the magnetic part 20.
  • the bar 24 is made of a ferromagnetic material.
  • the bar 24 is not permanently magnetized.
  • the pusher 6 is essentially a cylindrical shape with a circular cross-section. At its upper end, it has an external support face 50, against which a user presses to move the pusher 6 from its rest position to its depressed position. Here, this face 50 extends primarily horizontally.
  • the pusher 6 has an internal recess 52 configured to fully receive the spring 26 and the support 22.
  • the pusher 6 also has two vertical slots 56 and 58 located opposite each other with respect to the axis 10. These slots 56 and 58 are straight slots. Here, the slots 56 and 58 each open into the lower end of the pusher 6. These slots 56 and 58 therefore have cross-sections in the shape of an inverted "U” and extend mainly vertically ( Figure 7 These slots 56 and 58 allow the bar 24 to pass horizontally through the pusher 6 while permitting the pusher 6 to move between its rest and depressed positions. When the bar 24 passes through the pusher 6, it has two ends 42 and 44 that protrude, respectively, to the right and left of the pusher 6.
  • the height of slots 56 and 58, in the Z direction, is sufficient to allow the pusher 6 to move between its rest position and its depressed position.
  • the height of slots 56 and 58 is greater than 3 mm or 5 mm.
  • the height of slots 56 and 58 is also less than 30 mm or 20 mm.
  • the width of slots 56 and 58 is dimensioned as for the width of slots 36 and 38 so as to allow the introduction of the bar 24 into these slots.
  • the pusher 6 has an upper internal face 54 located on the opposite side to the support face 50 and vertical internal faces 60.
  • the vertical internal faces 60 are shaped to guide the support 22 in translation along the axis 10 by form cooperation with vertical external faces of the support 22.
  • the pusher 6 has, at its lower end, a lower stop 62 which retains it inside the body 4.
  • This lower stop 62 extends radially and horizontally and forms a protrusion on the outer periphery of the lower end of the pusher 6.
  • the lower stop 62 forms a rim which extends continuously over the entire outer periphery of the lower end of the pusher 6 except at the locations where the slots 56 and 58 open into this lower end ( Figure 7 ).
  • the spring 26 When the button 2 is in its assembled state, the spring 26 is fully received inside the recess 52 of the push button. It rests, on one side, on the inner face 54 of the push button 6 and, on the opposite side, on the upper part 34 of the support 22.
  • the pusher 6 also includes, between the inner face 54 and above the slots 56 and 58, a shoulder 64 adapted to bear directly against the upper part 34 of the support 22 before the pusher has reached its depressed position. This shoulder 64 triggers the release of the magnetic part 20.
  • the spring 26 is dimensioned so that it is always in a state of compression when the button 2 is used.
  • the spring 26 is dimensioned to be in a state of compression when the push button 6 is in its rest position and, at the same time, the support 22 is in its lowered position.
  • the stiffness of the spring 26 is also chosen to be sufficiently low so that, in the absence of external stress on the bearing face 50, it allows the support 22 to rise from its lower position to its upper position solely under the action of the magnetic attraction force between the part 20 and the bar 24. To this end, when the pusher 6 is in its rest position, the force exerted by the spring 26 on the support 22 is always less than the magnetic attraction force, at the same instant, between the magnetic part 20 and the bar 24. Thanks to this, in the absence of external stress, the support 22 returns to its upper position using only the magnetic attraction force between the magnetic part 20 and the bar 24.
  • the stiffness of the spring 26 is also low enough that the force it exerts on the support 22 is less than the force required to detach the magnetic part 20, at least until the shoulder 64 has come directly into contact with the upper part 34 of the support 22. Conversely, its stiffness is sufficient to accelerate the movement of the support 22 towards its lower position after the detachment of the magnetic part 20.
  • the body 4 has a vertical wall 70 that completely surrounds the shaft 10 and thus defines within the body 4 a through-hole in which, in the assembled state, the circuit 8, the support 22, the pusher 6, the seal 28, and the ring 30 are housed.
  • This hole opens at the top and bottom, forming a lower circular opening 72 and an upper circular opening 74 at the level of the lower and upper ends of the body 4, respectively.
  • the lower opening 72 is shaped to allow the pusher 6 to be inserted into the body 4 through this opening 72.
  • the upper opening 74 is shaped to allow the seal 28 and the ring 30 to be inserted into the body 4.
  • the lower end of the wall 70 includes a mechanism 75 ( Figures 10 and 11 ) fixing of the circuit 8 inside the body 4.
  • This mechanism 75 retains the circuit 8 at the interior of the body 4 only by cooperation of form between the lower end of the body 4 and a periphery of the circuit 8.
  • the mechanism 75 has for this purpose elastically deformable tabs which allow the circuit 8 to be clipped onto the lower end of the body 4.
  • the upper end of the wall 70 has a seat to receive the ring 30.
  • the body 4 has a collar 76 projecting inside the housing of the body 4.
  • This collar 76 performs several functions. First, it is shaped to guide the plunger 6 in translation as it moves between its rest position and its depressed position. To this end, its inner periphery forms a circular vertical band which, by its shape in conjunction with the outer periphery of the plunger 6, guides the plunger 6 in translation.
  • This collar 76 also cooperates with the lower stop 62 to retain the plunger 6 inside the body 4. More specifically, the collar 76 prevents the plunger 6 from being removed from the body 4 by pulling it upwards. To this end, the collar 76 has a circular lower horizontal face 78 against which the lower stop 62 bears when the plunger 6 is in its rest position.
  • the recesses 82 and 84 and the ends 42 and 44 are shaped to lock the angular position of the pusher 6 when the ends 42, 44 are received. inside the recesses 82, 44.
  • the recesses 82 and 84 and the ends 42 and 44 each have opposing vertical faces which, by cooperation of form, block the rotation of the pusher 6.
  • the collar 76 has two notches 86 and 88 ( figure 12 ) diametrically opposed with respect to axis 10.
  • these notches 86 and 88 are located along an axis parallel to the Y direction and which intersects axis 10.
  • the notches 86 and 88 are angularly offset by 90° with respect to the recesses 82 and 84.
  • the notches 86 and 88 are wide enough to allow the passage of the bar 24 through the collar 76. On the other hand, they are also narrow enough to prevent the lower stop 62 from passing through the collar 76.
  • the combination of the bar 24, the lower stop 62, the collar 76 and the spring 26 forms a bayonet coupling allowing the pusher 6 to be mounted and fixed simply inside the body 4. More precisely, in this embodiment, it is the bar 24 which plays the role of the bayonet of this bayonet coupling.
  • the seal 28 is a seal that ensures, for example, that the button 2 is watertight against splashes of water. In the assembled state, this seal 28 is wedged between the wall 70 and the outer periphery of the push button 6. Here, in the assembled state, it is located between the bar 24 and the ring 30.
  • the ring 30 also allows the pusher 6 to be guided in translation along the axis 10.
  • it has a circular orifice centered on the axis 10 inside which the outer periphery of the pusher 6 slides.
  • button 2 The operation of button 2 is as follows. In the absence of external stimulation, the pusher 6 is in its rest position and the support 22 is in its raised position as shown in the diagram. figure 3 In this state, the magnetic part 20 is glued to the bar 24, which holds the support 22 in its raised position against the force exerted by the spring 26. In this state, the spring 26 is compressed between the upper part 34 of the support 22 and the inner face 54 of the pusher 6, which keeps this pusher 6 in its rest position.
  • the initial phase lasts until the shoulder 64 comes into direct contact with the support 22. More precisely, during the initial phase, the pusher 6 begins to descend, compressing the spring 26. The shoulder 64 then comes into contact with the upper part 34 of the support 22. At this point, the support 22 is still in its raised position. When the shoulder 64 is directly in contact with the support 22, it allows the user's pressing force to be transferred directly from the pusher 6 to the support 22, thus exerting a pushing force directly on the magnetic part 20. The user must then exert additional effort to detach the magnetic part 20 from the bar 24. When the magnetic part 20 detaches, the initial phase is complete and the final phase begins.
  • the potential energy stored in the spring 26 during the initial phase is abruptly released and used to rapidly move the magnetic part 20 away from the bar 24.
  • the support 22 quickly reaches its lowered position.
  • the spring 26 has also relaxed, so that the resistance it offered to the depressing of the push button 6 during the initial phase has also decreased sharply. Therefore, at the moment of transition from the initial to the final phase, the user feels a point of resistance, confirming that the push button 6 has been correctly and sufficiently depressed.
  • the combination of the bar 24, the magnetic part 20, the support 22, the spring 26, and the shoulder 64 forms a snap-action mechanism, meaning a mechanism where the pressure exerted on the face 50 to depress the pusher 6 drops abruptly when the pusher 6 is at a predetermined depth inside the body 4 and before reaching the depressed position.
  • a snap action is known as "snap action.”
  • the snap-action mechanism ensures that there are no intermediate positions in the movement of the magnetic part 20. This allows for precise and unstable detection of the depressed position.
  • buttons 2 are now described with reference to the assembly process of the figure 5 and with the help of figures 6 to 14 .
  • step 100 the bar 24 is inserted through the slots 36 and 38 of the support 22 ( figure 6 ).
  • step 102 the spring 26 is inserted into the hollow 52 of the pusher 6 ( figure 7 ).
  • step 104 the combination of the support 22 and the bar 24 obtained at the end of step 100 is introduced inside the hollow 52 of the pusher 6 ( figure 8 ).
  • the spring 26 is then trapped between the face 54 and the upper part 34 of the support 22.
  • step 106 the assembly obtained at the end of step 104 is introduced inside the body 4 from its lower end ( figure 9 ).
  • step 108 the assembly inserted into the body 4 is oriented angularly so that the ends 42 and 44 of the bar 24 are opposite the notches 86 and 88, respectively.
  • the bar 24, which acts as the bayonet for the bayonet lock, is then in a free position.
  • the free position is the position of the bayonet in which the pusher 6 can be freely disassembled and removed from the body 4.
  • the bar 24 begins to pass through the notches 86 and 88 and the lower stop 62 comes to rest on the lower face 78 of the collar 76.
  • the spring 26 is not necessarily compressed.
  • step 110 the support 22 is then pushed upwards until the bar 24 is entirely above the upper face 80 of the collar 76 as shown in the figure 11 .
  • step 112 at this stage, the pusher 6 is rotated 90° while keeping the support 22 pushed upwards to hold the bar 24 above the upper face 80. Under these conditions, the 90° rotation of the pusher 6 rotates the support 22 and the bar 24 by 90° around the axis 10. At the end of this rotation, the ends 42 and 44 of the bar 24 are opposite the recesses 82 and 84. At this stage, the support 22 is released ( figure 12 ). The spring 26 and the magnetic force of attraction between the part 20 and the bar 24 then push and hold the ends 42 and 44 inside the recesses 82 and 84. The state shown on the Figures 12 and 13 is then reached. At the end of step 112, the bar 24, which acts as a bayonet, is then in a locked position. The locked position is the position of the bayonet in which it rests against the collar 76 to hold the pusher 6 in a position mounted inside the body 4.
  • step 114 the seal 28 and then the ring 30 are introduced around the pusher 6 from the upper end of the body 4 ( figure 14 ).
  • step 116 the circuit 8 is clipped onto the lower end of the body 4 using the mechanism 75.
  • the button is then in its assembled state as shown in the figures 1, 3 and 4 .
  • Figure 130 represents a button identical to button 2 except that it includes an additional spring 132 entirely housed inside the push button 6 to increase the return force of the push button 6 to its rest position.
  • the spring 132 bears, on one side, against the inner face 54 of the push button 6 and, on the opposite side, directly against an upper face of the bar 24.
  • the spring 132 is housed inside the spring 26 and in the recess of the support 22 located above the bar 24.
  • Button 130 works like button 2. In particular, as long as shoulder 64 does not come directly into contact with support 22, magnetic piece 20 remains stuck to strip 24.
  • spring 132 is not in contact with the support 22.
  • spring 132 increases the return force of push button 6 towards its rest position.
  • spring 26 does not necessarily need to be in a state of compression when support 22 is in its lowered position. In other words, spring 26 is not necessarily capable of returning pusher 6 from its depressed position to its rest position on its own.
  • FIG 16 represents the button 130 combined with the quick reversible locking mechanism described in the applications FR37156 And FR3078174
  • This quick-locking mechanism facilitates the replacement of button 130.
  • the body 4 is shaped to be locked inside a barrel 140 by means of a seal 142, as described in these patent applications.
  • the barrel 140 and the seal 142 are described in detail in these patent applications and are not repeated here.
  • the lower stop 62 of the push-button and the bayonet of the bayonet lock form a single piece.
  • the lower stop 62 is shaped to pass through the notches 86, 88.
  • the lower stop 62 is limited to two diametrically opposed protrusions, each oriented radially.
  • the bar 24 is arranged so that its ends 42, 44 do not pass through the notches 86, 88 during assembly.
  • the ends 42, 44 of the bar 24 are wider than the notches 86, 88 and therefore cannot pass through the notches 86, 88.
  • the pusher 6 To mount the pusher 6, it is inserted from the upper end of the body 4 until the lower stop 62 passes through the notches 86, 88 and is located below the lower face 78 of the collar 76. At this point, the pusher 6 is rotated about the axis 10 to move the lower stop 62 from the free position to the locked position. Preferably, as previously described, in the locked position, the ends 42, 44 of the bar 24 are received in the recesses 82, 84.
  • the collar 76 has more than two notches 86, 88.
  • the part that acts as a bayonet is shaped to have as many ends as there are notches. These ends are then positioned relative to each other so that they pass through the notches simultaneously when the bayonet is in its free position.
  • Recesses to block the rotation of the pusher 6 can also be provided on the underside of the collar.
  • the lower stop 62 is further shaped to be received inside these recesses when the pusher 6 is in the rest position.
  • the recesses 82, 84 are omitted.
  • the rotation of the pusher 6 around the axis 10 is not blocked by the shape cooperation between the ends 42, 44 of the bar 24 and these recesses 82, 84.
  • the rotation of the push button 6 can be blocked in a different way.
  • sections of the periphery of the push button 6 and the guide ring 30 are shaped to block the rotation of the push button 6 as soon as the ring 30 is fixed to the body 4 of the button.
  • These sections of the periphery of the push button 6 and the ring 30 each have a flat surface which, by their shape, prevents the rotation of the push button 6 around the axis 10.
  • the bar 24 is permanently magnetized.
  • the magnetic part 20 is not necessarily also permanently magnetized.
  • the magnetic part 20 is then made of a ferromagnetic material that is not permanently magnetized.
  • the magnetic part 20 comprises a permanent magnet and another permanently unmagnetized magnetic part.
  • This other magnetic part is fixed without any degrees of freedom to the permanent magnet and guides the magnetic field lines generated by the permanent magnet.
  • the magnet permanent occupies the position of piece 20 shown on the figures 3 and 4
  • the other magnetic component is a magnetic stainless steel ring fixed without any degree of freedom around the upper part of the permanent magnet. The height of this ring is adjusted so that only this ring makes direct mechanical contact with the bar 24 when the magnetic component 20 is glued to the bar 24.
  • an air gap remains between the bar 24 and the permanent magnet of the component 20. This prevents the permanent magnet from directly striking the bar 24 when the push button 6 returns to its rest position. This makes the push button more robust, particularly with regard to damage to the permanent magnet caused by impacts on the bar 24.
  • the support 22 can have a "U" shape, with one of the arms of the "U” located below the bar 24 and the other arm of the "U” located above the bar 24.
  • the support 22 has slots which open into the vertical plane containing the distal ends of the arms of the "U”.
  • the bar 24 has a hole in its central portion 44, and the support 22 has a rod mounted to slide inside this hole. This rod mechanically connects the lower part 32 to the upper part 34 of the support 22.
  • the pusher 6 has a pin that bears, for example, under the lower part 34 of the support 22 when the latter is in its lower position. This pin then pulls the support 22 towards its upper position when the pusher 6 returns to its rest position under the action of the spring 132.
  • an additional spring is introduced specifically to return the support 22 from its lower position to its upper position. In these variants, the magnetic attraction force between the bar 24 and the magnetic part 20 does not need to be greater than the restoring force of the spring 26 when the support 22 is in its lower position.
  • the spring 132 is configured to be able to perform the following two functions on its own: returning the pusher 6 to its rest position and holding the bar 24 against the upper face 80 of the collar 76. In this case, spring 26 does not need to participate in performing both functions. Thus, when pusher 6 of button 130 is in its rest position, spring 26 can be in a state of unstressed compression. This slightly slows the return of pusher 6 to its rest position.
  • the detector 16 is replaced by an optical, resistive, or other type of detector.
  • the detector 16 is replaced by a switch that is mechanically moved from an open position to a closed position by the lower part 34 of the support 22 or by the lower stop 62.
  • the lower stop 62 does not necessarily form a continuous rim around the axis 10.
  • the stop 62 is formed of several prominences distributed around the periphery of the pusher 6 and which each extend in a respective horizontal radial direction.
  • the bearing face 50 of the pusher 6 can have other shapes.
  • the bearing face is a hemisphere.
  • Button 2 can be used in any human-machine interface, such as aircraft human-machine interfaces or any human-machine interface of a device other than an aircraft.
  • the push button 6 is moved to its pressed position not by a user's finger, but by another part of the user's body, such as their foot.
  • the push button can also be moved to its pressed position by an object.
  • the push button can be moved to its pressed position by a door.
  • this button can also be used as a sensor for a mechanical position in an automated system.
  • the shoulder 64 is omitted.
  • the detachment of the part 20 occurs when the force exerted by the spring 26 on the support 22 becomes greater than the magnetic attraction that keeps the part 20 glued to the bar 24.
  • the snap-action mechanism is omitted.
  • the spring 26 of the button 130 is omitted.
  • the button comprises only the spring 132, and during the final phase, the support 22 is moved to its lower position by the shoulder 64. Therefore, there is no snap-action.
  • the user still feels a resistance point.
  • This variation is particularly useful when the button is a proportional button that delivers a signal that varies proportionally to the depth of depressment of push button 6.
  • the support 22 and the spring 26 of the button 130 can also be omitted, and only the spring 132 is retained.
  • the magnetic part 20 is then fixed directly and without any degree of freedom to the lower end of the push button 6.
  • the magnetic part 20 can be fixed directly to the lower stop 62.
  • the bar 24 can be made of a non-magnetic material. If the detector 16 does not use the magnetic field of the magnetic part 20 to detect the pressed position, then the magnetic part 20 can also be omitted.
  • a bayonet locking mechanism simplifies the mounting of the push button 6 in the fixed body 4.
  • the push button 6 can be mounted and dismounted without the need for tools.
  • the use of the sliding bar 24 inside the slots 56 and 58 of the push button 6 allows the bayonet locking spring 26 to be housed entirely within the push button, thus protecting it from external damage without the need for additional parts around the push button 6.
  • this same spring 26 returns the push button 6 to its rest position and maintains the bayonet in its locked position.
  • Using the same spring 26 for both functions also simplifies the button's design.
  • the bar 24 is also used as the bayonet for the bayonet locking mechanism reduces the number of parts in the push button and thus simplifies its manufacture. Furthermore, this prevents the push button from being disassembled from the top of the body. Indeed, in this case, the push button can only be mounted and disassembled from the bottom of the body 4, that is, from a side inaccessible to the user during normal button operation.
  • the shoulder 64 allows for simple and precise control of the distance traveled by the pusher 6 before the magnetic part 20 detaches. In particular, this distance no longer depends solely on the stiffness of the spring 26, thus reducing the constraints on the choice of this stiffness and simplifying the button's design. Furthermore, this distance is no longer affected by the fatigue of the spring 26.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Push-Button Switches (AREA)

Claims (8)

  1. Druckknopf mit:
    - einen hohlen Druckknopf (6), der entlang einer Bewegungsachse (10) zwischen einer Ruhestellung und einer gedrückten Stellung verschoben werden kann, wobei dieser Druckknopf auf einer Seite eine Auflagefläche (50) und auf der gegenüberliegenden Seite einen unteren Anschlag (62), der sich in Richtungen senkrecht zur Bewegungsachse erstreckt, wobei die Ruhestellung der Position entspricht, die der Druckknopf einnimmt, wenn keine äußere Kraft auf die Auflagefläche des Druckknopfs wirkt,
    - einen feststehenden Körper (4) mit einem Kragen (76), in dem der Stößel gleitet, wenn er sich zwischen seiner Ruhestellung und seiner gedrückten Position bewegt, wobei dieser Kragen eine Unterseite (78) aufweist, auf der der untere Anschlag (62) des Stößels in der Ruhestellung aufliegt, um den Stößel im Inneren des Kragens zu halten,
    - eine Bajonettverriegelung, mit der der Stößel im Inneren des feststehenden Körpers montiert werden kann, wobei diese Bajonettverriegelung zu diesem Zweck umfasst:
    - ein Bajonett, das mechanisch mit dem Stößel verbunden ist, um durch Drehung des Stößels um die Bewegungsachse zwischen folgenden Positionen winklig verschoben zu werden:
    - einer verriegelten Position, in der das Bajonett auf dem Kragen (76) aufliegt, um den Stößel in einer im feststehenden Körper montierten Position zu halten, und
    - einer freien Position, in der der Stößel demontiert und aus dem feststehenden Körper entfernt werden kann,
    - Einschnitte (86, 88) im Kragen, um den Durchgang des Bajonetts durch diesen Kragen zu ermöglichen, wenn sich das Bajonett in seiner freien Position befindet,
    - eine Feder (26, 132), die in der verriegelten Position das Bajonett auf dem Kragen aufliegen lassen und den Drücker aus seiner gedrückten Position in seine Ruhestellung zurückbringen kann,
    - wobei der Drücker (6) zwei gegenüberliegende Schlitze (56, 58) aufweist, die sich jeweils im Wesentlichen parallel zur Bewegungsachse erstrecken,
    dadurch gekennzeichnet, dass:
    - die Bajonettverriegelung einen Steg (24) aufweist, der die beiden Schlitze des Druckstücks durchquert und dessen aus dem Druckstück herausragende Enden (42, 44) jeweils auf der Oberseite (80) des Kragens (76) aufliegen, wobei diese Leiste in diesen beiden Schlitzen gleiten kann, wenn sich der Stößel zwischen seiner Ruhestellung und seiner gedrückten Position bewegt,
    - Die Feder (26, 132) der Bajonettverriegelung ist vollständig im Inneren des hohlen Druckstücks zwischen einer Innenseite (54) des Druckstücks und einem mittleren Abschnitt (40) des Stegs (24) zwischen seinen beiden Enden (42, 44) untergebracht.
    - das Bajonett der Bajonettverriegelung und entweder der Steg (24) oder der untere Anschlag (62) bilden ein und dasselbe Teil.
  2. Knopf gemäß Anspruch 1, wobei das Bajonett der Bajonettverriegelung und die Leiste (24) ein und dasselbe Teil bilden und der untere Anschlag (62) so angeordnet ist, dass er seinen Durchgang durch die Kerben (86, 88) des Kragens (76) verhindert.
  3. Knopf nach einem der vorstehenden Ansprüche, wobei der Kragen umfasst:
    - eine Oberseite (80), die sich auf der seiner Unterseite (78) gegenüberliegenden Seite befindet, und
    - zwei Vertiefungen (82, 84), die in dieser Oberseite (80) ausgebildet sind, um jeweils ein Ende der Stange aufzunehmen, wenn sich das Bajonett in seiner verriegelten Position befindet.
  4. Knopf gemäß einem der vorstehenden Ansprüche, wobei der Knopf einen Schnappmechanismus aufweist, wobei dieser Schnappmechanismus umfasst:
    - den Steg (24) aus magnetischem Material,
    - ein magnetisches Teil (20), das sich unterhalb des Stegs befindet, d. h. auf der Seite des Stegs, auf der sich der untere Anschlag (62) des Druckknopfs befindet, wobei dieses magnetische Teil und der Steg magnetisch aneinander haften können,
    - einen Träger (22), der sich im Inneren des hohlen Stößels befindet und umfasst:
    - einen unteren Teil (32), der sich unterhalb des Stegs befindet und an dem das Magnetstück ohne jeglichen Freiheitsgrad befestigt ist, und
    - einen oberen Teil (34), der sich über dem Steg befindet,
    wobei diese Halterung innerhalb des hohlen Stößels zwischen folgenden Positionen verschoben werden kann:
    - einer oberen Position, in der das magnetische Teil und die Leiste magnetisch aneinander haften, und
    - einer unteren Position, in der das magnetische Teil von der Leiste entfernt und von dieser gelöst ist,
    - einer zwischen dem Drücker und dem oberen Teil (34) des Trägers angeordneten Feder (26), um die Entfernung des Magnetstücks von der Leiste nach dem Ablösen dieses Magnetstücks von der Leiste zu beschleunigen.
  5. Knopf nach Anspruch 4, wobei:
    - der obere Teil (34) des Trägers so geformt ist, dass er in der unteren Position auf der Leiste (24) aufliegt, und
    - die Feder der Bajonettverriegelung und die Feder des Schnappmechanismus eine einzige Feder (26) bilden.
  6. Knopf gemäß Anspruch 4 oder 5, wobei die Leiste (24) und das Magnetstück (20) so konfiguriert sind, dass in der unteren Position der Halterung die magnetische Anziehungskraft zwischen dem Steg und dem Magnetteil größer ist als die Kraft, die von der Feder des Schnappmechanismus auf den oberen Teil (34) des Trägers ausgeübt wird, wenn keine äußere Kraft auf die Auflagefläche des Druckknopfs wirkt.
  7. Knopf nach einem der Ansprüche 4 bis 6, wobei der Schnappriegelmechanismus eine im Drücker ausgebildete Schulter (64) aufweist, wobei diese Schulter direkt auf dem oberen Teil (34) des Trägers aufliegen kann, nachdem die Bewegung des Druckknopfes aus seiner Ruhestellung in seine gedrückte Stellung die Feder des Schnappmechanismus zusammengedrückt hat, ohne jedoch das Ablösen des Magnetstücks zu bewirken.
  8. Knopf gemäß einem der Ansprüche 4 bis 7, wobei die Feder (26, 132) so konfiguriert ist, dass sie sich systematisch in einem unter Druck stehenden Zustand befindet, wenn sich der Träger in seiner unteren Position befindet.
EP23720094.4A 2022-04-20 2023-04-18 Druckknopf Active EP4511713B1 (de)

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FR2203637A FR3134918B1 (fr) 2022-04-20 2022-04-20 Bouton poussoir
PCT/EP2023/059989 WO2023203017A1 (fr) 2022-04-20 2023-04-18 Bouton poussoir

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CN118755555A (zh) * 2024-09-03 2024-10-11 中科南京生命健康高等研究院 一种提高搅拌效果的节能生物反应釜

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR37156E (fr) 1929-06-27 1930-10-25 Perfectionnement aux machines de laminage pour la préparation des fibres avant filage
GB472924A (en) * 1936-05-13 1937-10-04 Schiele & Bruchsaler Ind Improvements in, or relating to, electric switches of the push-button type
DE1187094B (de) * 1959-02-25 1965-02-11 Siemens Ag Druckknopfantrieb, insbesondere fuer elektrische Befehlsschalter
DE1834595U (de) 1961-04-29 1961-07-13 Berker Geb Druckknopftaster.
DE2848741A1 (de) * 1978-11-10 1980-05-22 Standard Elektrik Lorenz Ag Druckknopf fuer tastschalter
US4521703A (en) 1982-08-30 1985-06-04 Rca Corporation High speed sense amplifier
FR3078174B1 (fr) 2018-02-22 2020-02-21 Crouzet Automatismes Interface homme-machine et organe de commande pour cette interface

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EP4511713A1 (de) 2025-02-26
CA3246458A1 (fr) 2023-10-26
CN119032330A (zh) 2024-11-26
EP4511713C0 (de) 2025-12-31
WO2023203017A1 (fr) 2023-10-26
FR3134918B1 (fr) 2024-03-22
FR3134918A1 (fr) 2023-10-27

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