EP1157398B1 - Sealed individual electric switch fixed by being interlocked on a circuit board - Google Patents

Sealed individual electric switch fixed by being interlocked on a circuit board Download PDF

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Publication number
EP1157398B1
EP1157398B1 EP00993662A EP00993662A EP1157398B1 EP 1157398 B1 EP1157398 B1 EP 1157398B1 EP 00993662 A EP00993662 A EP 00993662A EP 00993662 A EP00993662 A EP 00993662A EP 1157398 B1 EP1157398 B1 EP 1157398B1
Authority
EP
European Patent Office
Prior art keywords
circuit board
tripping
actuating
electrical switch
cap
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.)
Not-in-force
Application number
EP00993662A
Other languages
German (de)
French (fr)
Other versions
EP1157398A1 (en
Inventor
Laurent Bouvier
Sylvain Rochon
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.)
ITT Manufacturing Enterprises LLC
Original Assignee
ITT Manufacturing Enterprises LLC
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
Priority to FR9916512A priority Critical patent/FR2803084B1/en
Priority to FR9916512 priority
Application filed by ITT Manufacturing Enterprises LLC filed Critical ITT Manufacturing Enterprises LLC
Priority to PCT/FR2000/003664 priority patent/WO2001048770A1/en
Publication of EP1157398A1 publication Critical patent/EP1157398A1/en
Application granted granted Critical
Publication of EP1157398B1 publication Critical patent/EP1157398B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/7006Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard comprising a separate movable contact element for each switch site, all other elements being integrated in layers
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/705Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2205/00Movable contacts
    • H01H2205/016Separate bridge contact
    • H01H2205/018Support points upwardly concave
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2205/00Movable contacts
    • H01H2205/016Separate bridge contact
    • H01H2205/02Separate bridge contact avoiding rotation
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2205/00Movable contacts
    • H01H2205/016Separate bridge contact
    • H01H2205/024Means to facilitate positioning
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00Tactile feedback
    • H01H2215/004Collapsible dome or bubble
    • H01H2215/012Positioning of individual dome
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00Tactile feedback
    • H01H2215/034Separate snap action
    • H01H2215/036Metallic disc
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00Actuators
    • H01H2221/064Limitation of actuating pressure
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2223/00Casings
    • H01H2223/054Mounting of key housings on same printed circuit
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2233/00Key modules
    • H01H2233/03Key modules mounted on support plate or frame
    • H01H2233/034Snap coupling
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2233/00Key modules
    • H01H2233/09Actuating striker on actuator part
    • H01H2233/10Actuating striker on actuator part captured between assembled parts of support

Description

The present invention relates to an electrical switch tactile effect.

The invention relates more particularly to an individual switch of very small dimensions of the type comprising:

  • a support which carries on its upper face at least two fixed electrical contacts;
  • a generally domed triggering member which is elastically deformable, from a stable state of rest, under the action of an actuating member which acts on the central part of the triggering member, in a direction axial substantially perpendicular to the upper face of the support, to establish an electrical connection between the two fixed contacts;
  • an upper cover which extends above the support, which laterally surrounds the triggering member and the upper part of which has a hole for the passage of the actuating member;
and means for fixing the cover relative to the support.

According to a widely held conception of such a type of miniature switch, the contact carrier is one piece molded in insulating plastic material which delimits a housing at the bottom of which are arranged at least two contacts fixed electrical and which receives the form triggering member curved which is deformable under the action of a pusher actuating.

According to this conception, when acting on the central part of the trigger member in the general shape of a dome, this one abruptly quits its stable state of rest to establish an electrical connection between a fixed contact, generally lateral against which the lower peripheral edge of the trigger, and a central fixed contact that comes strike the central part of the triggering member.

The sudden change in state of the triggering organ provides its user, who acts directly or indirectly on the actuator, a sensation tactile change of state of the triggering device, and therefore the change of state of the switch.

According to a known design, the triggering member is with the electronic circuits of the equipment to which it belongs for example made in the form of a curved disc.

The hood is usually a metallic piece of closure crimped around the housing and the electrical connection of the switch is made by lugs or output terminals of the switch which extend the fixed contacts outside the and which are welded and / or stitched on a circuit board equipment prints.

Thus, each electrical switch is presented under the form of an independent component which must be implemented and fixed by welding on the upper face of the circuit board printed with a relatively large overall size, especially laterally and in height which results from the need to assemble and fix together the different components of the switch before setting it up in equipment.

According to the design described and represented in the document EP-A-0.558.239, we know a switch having a printed circuit board having on its face upper at least two conductive tracks constituting the two fixed electrical contacts of the switch.

US-A-3,917,917 describes a switch electric with tactile effect according to the preamble of claim 1.

So from the switch manufacturer's point of view, this one produces and assembles all components, except the circuit board which is for example a circuit board printed matter belonging to equipment intended to contain one or more several switches according to the invention, which he delivers to "the user" who performs the assembly of these components on the circuit board together with other electronic components, in particular according to the so-called "pick and place" technique.

In order to improve the design of such a switch, and in particular its sealing, the invention proposes a switch, characterized in that the actuator comprises a skirt side which surrounds the trigger and which is closed at its upper part and whose lower edge is pinched vertically between a lower edge of the cover and the opposite part of the upper face of the circuit board to delimit a sealed cavity in which is housed the trigger.

According to other characteristics of the invention:

  • the side skirt is closed at its upper part by a transverse wall from which extends, vertically downwards, an axial rod for actuating the triggering member, and the actuating member is produced by molding in an elastically deformable material, in particular in a silicone-based elastomer material;
  • the actuating member comprises an axial operating rod which extends vertically upwards from the transverse wall and through the hole in the cover;
  • the lower edge is a peripheral lower lip which extends radially outwards and which is pinched elastically between a lower edge of the cover and the upper face of the circuit board;
  • the skirt has on its internal face, and in the vicinity of its lower end, several vertical retaining fingers of the trigger member to form a sub-assembly comprising the trigger and actuation members.
  • the retaining fingers are designed so as to release the triggering member when the upper cover is fixed to the printed circuit board or when the switch is operated for the first time;
  • the switch includes means for angular indexing of the actuating member relative to the cover and means for angular indexing of the triggering member relative to the actuating member;
  • the angular indexing means of the triggering member with respect to the actuating member are constituted by the vertical retaining fingers of the triggering member which are formed in relief on the internal wall of the side skirt of the 'actuator and which cooperate with complementary recesses formed in the peripheral lower edge of the trigger member;
  • the triggering member has a general star shape, the branches of which are delimited by the recesses formed in the lower edge of the triggering member;
  • the lateral skirt of the actuating member is mounted tightened radially inside a complementary housing of the cover to form a sub-assembly comprising the cover and the actuating member;
  • the side skirt comprises retaining lugs which fit elastically into complementary housings of the cover in order to hold the actuator in the cover to form a sub-assembly comprising the cover and the actuating member;
  • the means for fixing the cover to the circuit board comprise at least one pair of diametrically opposite arms, each of which extends vertically downwards through a corresponding orifice of the circuit board with its lower free end in the form of a hook which cooperates with a portion facing the underside of the plate to retain the cover vertically upward relative to the plate;
  • the free end of each attachment arm is shaped as a ramp to cause its automatic erasure, in the radial direction, during assembly of the cover, vertically from top to bottom, on the circuit board;
  • the fixing means comprise two pairs of hooking arms which extend in perpendicular axial planes;
  • the triggering member comprises a lower base, the lower peripheral edge of which bears on the upper face of the circuit board and a domed upper part on which the actuating member acts;
  • upper face of the circuit board comprises at least one central fixed contact situated vertically in line with the curved upper part, and at least one peripheral fixed contact situated in line with a section of the lower edge of the base of the trigger;
  • the section of the lower edge of the base of the triggering member consists of the lower free end edge of one of the branches of the star;
  • the circuit board is a printed circuit board, or a portion of a printed circuit board, belonging to electronic equipment;
  • the switch has a general design symmetry around the vertical actuation direction.

Other characteristics and advantages of the invention will appear on reading the detailed description which follows for the understanding of which reference will be made to the appended drawing in which:

  • FIG. 1 is an exploded perspective view which illustrates the three main components of an electrical switch produced in accordance with the teachings of the invention in association with a portion of printed circuit board constituting the support of the fixed contacts;
  • Figure 2 is a perspective view from above of the three main components of Figure 1 which are shown assembled to form a sub-assembly ready to be mounted on the printed circuit board;
  • Figure 3 is a perspective view from below of Figure 2;
  • Figure 4 is a sectional view through an axial plane along line 4-4 of Figure 5 which illustrates the switch according to the invention after the attachment and fixing of the sub-assembly on the printed circuit board;
  • Figure 5 is a bottom view along arrow F5 of Figure 4;
  • FIG. 6 is a view similar to that of FIG. 4 which illustrates the switch in section through an axial plane along line 6-6 of FIG. 5.

We will use, without limitation, in the description and claims which follow, a vertical orientation in reference to figures.

In accordance with the teachings of the invention, a electrical switch with tactile effect 10 represented in FIGS. 1, 4 and 6, is constituted by a sub-assembly12 comprising the assembly of three main components 14, 16 and 18 and a portion 20 of printed circuit board.

The three main components include a cover upper 14 produced by plastic molding, in particular thermoplastic, an actuator or actuator 16 produced by molding in elastomeric material based silicone and a trigger member 18 which is by example a piece of stainless steel sheet.

The printed circuit board 20 has on its face upper 22 different guide tracks which will be described in detail later and in its thickness four holes through 24 for hanging and fixing the sub-assembly 12 with a view to setting up an electrical switch 10.

With the exception of the conductive parts constituting the fixed contacts of electric switch 10, the latter has a general design symmetry with respect to its axis vertical center A.

The upper cover 14 is a rigid pot-shaped part overturned comprising a side wall 26 which delimits a face cylindrical internal lateral 28 and having an upper wall horizontal transverse 30 which delimits a transverse face internal upper 32 of the cover pierced with a central hole 34.

The internal lateral face 28 has four bosses 36 which extend radially inward and which are distributed angularly at 90 ° around the axis A to constitute means polarizing the angular orientation of the actuator 16, around the axis A, relative to the cover 14 as will be explained later.

The cover 14 is delimited vertically downwards by a face or lower transverse edge 38 which is connected to the wall 28 by rounded leave 40.

For hanging and fixing on the circuit board printed 20, the cover 14 has here four hooking lugs 42 arranged in the form of two pairs of legs which extend in vertical planes offset angularly by 90 ° and which are also angularly offset by 45 ° relative to the two vertical planes in which the bosses extend 36.

Each hooking lug 42 extends generally according to a vertical direction and it has an upper section horizontal 44 which extends radially outwards from the corresponding part of the side wall 26, and a section main vertical 46 whose lower free end 48 is shaped like a hook.

Each hook 48 here extends radially outwards being delimited by an upper horizontal facet 50 which, as can be seen in figure 6, extends opposite a part opposite the underside 23 of the plate 20, when the sub-assembly 12 is mounted on the printed circuit board 20.

As can be seen in particular in Figures 1 and 6 on which each latch 42 is shown in its free state, the main branch 46 is slightly inclined outwards with respect to axis A and tab 42 is overall likely to flex elastically towards axis A so as to allow fixing by interlocking elastic or "clipping" of each tab 42 into the hole 24 associated, the radial dimensions of the latter allowing for this purpose the passage of the hook 48.

So as to facilitate clipping and therefore deformation provisional elastic of the legs 42 for erasure, radially inwards, the external lateral face 52 of each leg 48 is shaped as an inclined ramp which cooperates with the corresponding upper edge 54 of hole 24 during insertion vertical, from top to bottom, of tab 42 with its hook 48 in a hole 24.

The actuator 16, at its lower part, is a piece in general shape of overturned pot, or cylindrical case closed to its upper part, which delimits an internal cavity 56. This lower part of actuator 16 is essentially constituted by a cylindrical side skirt 58 closed at its upper part by a horizontal upper transverse partition 60 which is extends at its lower end with a shaped lower edge peripheral lip 62 which extends radially towards the outside and which is shaped by its external profile 64 of complementary to the lower edge 38 and to the leave 40 of the side wall 26 of the cover 14.

The lateral skirt 58 defines an internal lateral surface 66 while it is delimited radially outwards by a external lateral surface 68 in which are formed, at its part upper, four complementary recesses or slots 70 bosses 36 so as to allow angular indexing, around the axis A, of the actuator 16 relative to the cover 14.

The design and sizing of parts 14 and 16 are also such that the skirt 58 is mounted with a slight radial tightening inside the cover 14 in order to retain the part lower forming body of actuator 16 inside the cover 14.

From its transverse wall 60, the actuator 16 comprises a vertical rod 72 for actuating the member trigger 18 which extends downwards and which ends in a lower facet 74 in the form of a disc which is intended for cooperate with the upper face of the central part opposite 76 of the triggering member 18.

The actuator 16 also includes a vertical rod of maneuver 78 which extends vertically upwards from the transverse partition 60 to pass through the central hole 34 of the cover 14 and protrude outside the switch for allow the actuation of the latter by exerting a push vertical P on the upper part of the push rod.

The annular portion of the transverse partition 60 included between the side skirt 58 and the central rod comprising the section lower forming actuating rod 72 and the upper section forming an operating rod 78, due to the production by molding in a flexible material such as elastomer the actuator 16 constitutes a deformable part allowing the vertical displacements of the rod 72, 78 along the axis A with respect to to the lower body of the actuator 16 constituted by its skirt 58.

As can be seen in Figures 4 and 6, the dimensioning of the various components is such that, in mounted position on the printed circuit board 20, the face upper part of the partition 60 is vertically upwards against the internal face 32 of the cover 14, while the lip 62 is pinched elastically between the lower edge 38 of the cover 14 and the annular part facing the upper face 22 of the plate 20 to "close" the switch 10, that is to say to delimit the sealed cavity 56 inside the actuator 16.

In order to constitute the sub-assembly 12, and in particular for vertically retain the trigger member 18 relative to the actuator 16, the latter comprises retaining fingers 80 vertical and angular orientation of the trigger 18 relative to actuator 16

To this end, and as can be seen in particular in Figures 1 and 4, the actuator 16 comprises, inside the cavity 56, four studs or bosses 80 formed in relief radially towards the interior from the internal face 66 of the skirt 58.

Each stud 80 is flared at its lower part to constitute a bead 82 in the shape of an arc of a circle, the four beads 82 thus being distributed angularly so regular at 90 ° around the A axis.

The trigger member 18 in the general shape of a dome slightly domed consists essentially of a part upper central 76 from which extend radially outwards four branches 84 to give the organ of trigger 18 a general shape of a four-pointed star.

To delimit the branches 84, the peripheral edge bottom of the dome has four cutouts or recesses 86 of slightly curved profile and complementary to that of beads 82 so that, as can be seen in particular in Figure 4, the fingers 80, 82 extend opposite the recesses 86 and below the dome 18 to orient it angularly relative to the actuator 16 and to hold it vertically by relation to it to constitute the subset 12.

Positioning vertically from bottom to top considering FIG. 1, of the dome 18 in the cavity 56 of the actuator 16 is carried out by elastically deforming the beads 82 of retaining fingers 80, the constitution of this first sub-assembly 16, 18 preferably being carried out before placing the actuator 16 inside the cover 14 of so that the actuator 16 can easily deform according to the radial direction.

The radially outer free ends 88 of each branch 84 constitute the "remaining" part of the peripheral edge dome 18 lower and they are folded vertically towards the bottom, so as to be offset from the top central 76 of the dome 18 and to constitute four support points and of contact of the dome 18 on the upper face 22 of the plate to printed circuits 20 as can be seen in Figure 6

The triggering member 18 is made of conductive material, or at least its underside, and it is intended to establish the connection electric between at least two fixed switch contacts which here are conductive tracks carried by the upper face 22 of the printed circuit board 20.

In the embodiment illustrated in Figures 1 and 5, the switch 10 has a common fixed central contact 90 consisting of a disc-shaped track 90 located generally to the right of axis A and it has two other fixed contacts diametrically opposed 92 in the form of a rectangular track.

Tracks 90 and 92 forming the fixed contacts are extend radially outwards to be connected to corresponding connection areas 94 and 96 located at outside the switch.

The positioning of the fixed contacts 92 relative to the hole 24, angularly and radially, is such that when the sub-assembly 12 is fixed on the printed circuit board 20 to constitute the electrical switch 10, two ends 88 belonging to two diametrically opposite branches 84 of the triggering member 18 are in contact with electrical contact with the two fixed output contacts 92 while the part central 76 of dome 18 is located vertically opposite and at above the common fixed central contact 90.

When the operating rod 78 is pressed according to the arrow P of fig 4, the central part 76 of the dome is deformed 18 which leaves its stable state of rest, according to a conception general known, to establish electrical contact with the central fixed contact 90 and when the effort is released actuation, the dome 18 returns to its initial stable state in also acting as a return spring for the actuator 16.

The design according to the invention which has just been described is therefore particularly advantageous in that the fixing of the sub-assembly 12 on the printed circuit board 20 does not require no welding operation.

In addition, this design can advantageously be used in connection with the installation and assembly of different components on a printed circuit board depending on the "pick and place" technique, the upper face of the sub-assembly 12 allowing easy gripping of the sub-assembly 12 for its placement on the plate 20.

Once mounted on plate 20, the electrical switch 10 is perfectly sealed insofar as the cavity in which are arranged on the one hand the dome 18 and on the other hand the fixed contacts 90 and 92 is a cavity whose tightness is provided by the peripheral lip 62 pinched between the cover 14 and the plate 20.

The total dimensions of the switch are also low. For example, the total height of the switch at above the upper face 22 of the plate 20 is equal to 5 millimeters while the outside "diameter" of the cover 14 is equal at about 8.3 millimeters.

According to a variant not shown, by inversion mechanical, provision can be made for the side skirt 58 to include retaining pins which fit elastically into complementary housings of the cover 14 in order to maintain the actuator in the hood to constitute a sub-assembly comprising the cover 14 and the actuating member 16.

Claims (19)

  1. A tactile-effect electrical switch (10) of the type comprising:
    a printed-circuit board (20) having on its upper face at least two conducting tracks (90, 92) constituting two fixed electrical contacts (90, 92);
    a tripping member (18) of domed overall shape which is elastically deformable, from a stable rest state, owing to the action of an actuating member (16) which acts on the central part (76) of the tripping member in an axial direction (P) approximately perpendicular to the upper face (22) of the printed circuit board, in order to establish an electrical connection between the two fixed contacts (90, 92); and
    an upper cap (14) which is fastened onto the printed-circuit board (20) by means (42, 24) of the elastic snap-fastening type, which extends above the printed circuit board, which laterally surrounds the tripping member (18), and the upper part of which has a hole (34) for passage of the actuating member (16),
    characterized in that the actuating member (16) comprises a lateral skirt (58) which surrounds the tripping member (18) and which is closed in its upper part and the lower edge (62) of which is pinched vertically between a lower edge (38) of the cap (14, 16) and the opposing part of the upper face of the circuit board in order to delimit a sealed cavity (56) in which the tripping member (18) is housed.
  2. The electrical switch as claimed in the preceding claim, characterized in that the lateral skirt (58) is closed in its upper part by a transverse wall (60) from which an axial rod (72) for actuating the tripping member (18) extends vertically downward and in that the actuating member (16) is produced by molding an elastically deformable material, especially a silicone-based elastomer.
  3. The electrical switch as claimed in the preceding claim, characterized in that the actuating member (16) includes an axial operating rod (78) which extends vertically upward from the transverse wall (60) and through the hole (34) in the cap (14).
  4. The electrical switch as claimed in any one of the preceding claims, characterized in that the lower edge is a peripheral lower lip (62) which extends radially outward and which is elastically pinched between a lower edge (38) of the cap and the upper face (22) of the circuit board (20).
  5. The electrical switch as claimed in any one of claims 1 to 3, characterized in that the skirt (58) includes, on its internal face (66) and near its lower end, several fingers (80, 82) for the vertical retention of the tripping member (18) in order to constitute a subassembly comprising the tripping member (18) and the actuating member (16).
  6. The electrical switch as claimed in claim 5, characterized in that the retention fingers (80, 82) are designed so as to free the tripping member (18) when fastening the upper cap onto the printed-circuit board (20) or during the first operation of the switch.
  7. The electrical switch as claimed in either of claims 5 and 6, characterized in that it includes means (36, 70) for the angular indexation of the actuating member (16) with respect to the cap (14) and means (80, 82, 86) for the angular indexation of the tripping member (18) with respect to the actuating member (16).
  8. The electrical switch as claimed in one of claims 5 to 7, characterized in that the means for the angular indexation of the tripping member (18) with respect to the actuating member (16) consist of the vertical retention fingers of the tripping member (18) which are formed in relief on the internal wall (66) of the lateral skirt (58) of the actuating member and which engage with complementary recesses (86) formed in the peripheral lower edge of the tripping member (18).
  9. The electrical switch as claimed in the preceding claim, characterized in that the tripping member (18) has the overall shape of a star whose branches (84) are delimited by the recesses (86) formed in the lower edge of the tripping member.
  10. The electrical switch as claimed in any one of claims 1 to 9, characterized in that the lateral skirt (58) of the actuating member (16) is mounted so as to fit radially inside a complementary housing (28) in the cap (14) in order to constitute a subassembly comprising the cap (14) and the actuating member (16).
  11. The electrical switch as claimed in any one of claims 1 to 9, characterized in that the lateral skirt (58) has holding lugs which are elastically snap-fastened into complementary housings in the cap (14) so as to hold the actuator in the cap in order to constitute a subassembly comprising the cap (14) and the actuating member (16).
  12. The electrical switch as claimed in any one of the preceding claims, characterized in that the means for fastening the cap (14) onto the circuit board (20) comprise at least one pair of diametrically opposed arms (42), each of which extends vertically downward through a corresponding orifice (24) in the circuit board (20) with its hook-shaped lower free end (48) which engages with an opposing portion of the lower face of the board in order to keep the cap (14) vertically upward with respect to the board.
  13. The electrical switch as claimed in the preceding claim, characterized in that the free end (48) of each catching arm (42) is in the form of a ramp (52) in order to automatically move it aside radially when mounting the cap (14), vertically downward, onto the circuit board (20).
  14. The electrical switch as claimed in either of claims 12 and 13, characterized in that the fastening means comprise two pairs of catching arms (42) which extend in perpendicular axial planes.
  15. The electrical switch as claimed in any one of the preceding claims, characterized in that the tripping member comprises a lower base, the lower peripheral edge (88) of which bears on the upper face (2) of the circuit board (20), and a domed upper part (76) on which the actuating member (16, 72, 74) acts.
  16. The electrical switch as claimed in the preceding claim, characterized in that the upper face (22) of the circuit board (20) includes at least one central fixed contact (90) located vertically in line with the domed upper part and at least one peripheral fixed contact (92) located in line with a section (88) of the lower edge of the base of the tripping member (18).
  17. The electrical switch as claimed in the preceding claim taken in combination with claim 9, characterized in that the section (88) of the lower edge of the base of the tripping member (18) consists of the lower free end edge of one of the branches (84) of the star.
  18. The electrical switch as claimed in any one of the preceding claims, characterized in that the circuit board (20) is a printed-circuit board, or a portion of a printed-circuit board, forming part of an item of electronic equipment.
  19. The electrical switch as claimed in any one of the preceding claims, characterized in that it has an overall design symmetry about the vertical actuating direction (P, A).
EP00993662A 1999-12-27 2000-12-22 Sealed individual electric switch fixed by being interlocked on a circuit board Not-in-force EP1157398B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR9916512A FR2803084B1 (en) 1999-12-27 1999-12-27 Electric switch with tactile effect fixed by elastic socket on a circuit plate
FR9916512 1999-12-27
PCT/FR2000/003664 WO2001048770A1 (en) 1999-12-27 2000-12-22 Sealed individual electric switch fixed by being interlocked on a circuit board

Publications (2)

Publication Number Publication Date
EP1157398A1 EP1157398A1 (en) 2001-11-28
EP1157398B1 true EP1157398B1 (en) 2004-09-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP00993662A Not-in-force EP1157398B1 (en) 1999-12-27 2000-12-22 Sealed individual electric switch fixed by being interlocked on a circuit board

Country Status (10)

Country Link
US (1) US6501036B2 (en)
EP (1) EP1157398B1 (en)
JP (1) JP2003518717A (en)
KR (1) KR20010102408A (en)
CN (1) CN1195310C (en)
AT (1) AT277416T (en)
DE (1) DE60014041T2 (en)
ES (1) ES2226980T3 (en)
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KR20010102408A (en) 2001-11-15
FR2803084A1 (en) 2001-06-29
CN1195310C (en) 2005-03-30
JP2003518717A (en) 2003-06-10
FR2803084B1 (en) 2002-04-19
DE60014041D1 (en) 2004-10-28
WO2001048770A1 (en) 2001-07-05
DE60014041T2 (en) 2005-10-06
EP1157398A1 (en) 2001-11-28
US6501036B2 (en) 2002-12-31
AT277416T (en) 2004-10-15
US20020056627A1 (en) 2002-05-16
ES2226980T3 (en) 2005-04-01
CN1341265A (en) 2002-03-20

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