EP3813089A1 - Elektrischer minischalter vom typ normalerweise geschlossen, mit einer verriegelungsposition des offenen kontaktes - Google Patents

Elektrischer minischalter vom typ normalerweise geschlossen, mit einer verriegelungsposition des offenen kontaktes Download PDF

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Publication number
EP3813089A1
EP3813089A1 EP20194561.5A EP20194561A EP3813089A1 EP 3813089 A1 EP3813089 A1 EP 3813089A1 EP 20194561 A EP20194561 A EP 20194561A EP 3813089 A1 EP3813089 A1 EP 3813089A1
Authority
EP
European Patent Office
Prior art keywords
actuator
internal contact
contact blade
electric switch
housing
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
EP20194561.5A
Other languages
English (en)
French (fr)
Other versions
EP3813089B1 (de
Inventor
Fabrice Valcher
Philippe Gauthier
Jocelyn MAYOT
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.)
C&K Components SAS
Original Assignee
C&K Components SAS
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 C&K Components SAS filed Critical C&K Components SAS
Publication of EP3813089A1 publication Critical patent/EP3813089A1/de
Application granted granted Critical
Publication of EP3813089B1 publication Critical patent/EP3813089B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/18—Movable parts; Contacts mounted thereon
    • H01H21/36—Driving mechanisms
    • H01H21/40—Driving mechanisms having snap action
    • H01H21/44—Driving mechanisms having snap action produced by flexing blade springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/52—Contacts adapted to act as latches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/18—Movable parts; Contacts mounted thereon
    • H01H21/22—Operating parts, e.g. handle
    • 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
    • H01H9/02—Bases, casings, or covers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
    • H01H23/28—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button with three operating positions
    • H01H23/30—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button with three operating positions with stable centre positions and one or both end positions unstable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/04—Levers

Definitions

  • the invention relates to an electrical switch of the normally closed type comprising an elastically deformable blade which causes a change of state of the electrical switch in response to the application of an actuation force on the elastically deformable blade and in which, in l 'absence of application of an actuating force, the electrical switch is maintained in a closed state.
  • the latter at least temporarily returns to its closed state in which the electrical switching channel is established.
  • Such a design can be inconvenient, in particular when the electrical switch is assembled on an electronic card comprising an electric battery or cell. Indeed, before being integrated into the electronic device, the electrical switch is not activated and it is in its closed state, which consumes the energy accumulated in the battery or electric cell of the device.
  • the invention aims to provide a solution to this problem by proposing an electrical switch comprising means for locking in the open position, that is to say in a state in which the electrical switching path is interrupted.
  • the invention also aims to provide such an electric switch which is of compact design, and which makes it possible to absorb an actuation overtravel.
  • the invention also aims to provide a switch which can be automatically unlocked when it is carried by a sub-assembly which is installed and assembled in an electronic device.
  • the invention also proposes an assembly comprising an electronic card and a switch according to the invention, characterized in that the electrical switch is mounted on one face of the electronic card and is adjacent to an edge of the electronic card so that, if the assembly is installed in an electronic device, an automatic unlocking of the internal contact blade of the electrical switch occurs by the coming into contact of its actuator with a part facing the electronic device , or belonging to assembly means.
  • the longitudinal axis L is oriented from the rear to the front.
  • FIG. 1 We represented at figures 1 to 5 an exemplary embodiment of an electrical switch 100 which here has a general design symmetry with respect to the vertical and longitudinal median plane PVM indicated in figure 3 .
  • the electrical switch 100 comprises a housing 10 in two upper 12 and lower 14 parts which houses a double internal contact blade 16 and an actuator 18.
  • the upper part 12 is a molded part of insulating plastic material of generally rectangular parallelepipedal shape and which defines an internal housing 20 delimited by a horizontal upper wall 22, two vertical and longitudinal side walls 24, and by a vertical and transverse front wall 26.
  • the rear transverse face 28 is open, as is the horizontal lower face 30.
  • the upper wall 22 comprises a central opening slot 32 which is delimited by an inclined front transverse edge 34, by an inclined rear transverse edge 36 and by two longitudinal vertical faces 38 of longitudinal orientation.
  • the internal face 23 of the upper wall 22 here comprises two vertical studs 40 for fixing by hot crimping of the internal contact blade 16, which are arranged longitudinally near the open rear transverse face 28.
  • the open lower face 30 comprises three vertical studs 42 arranged in a triangle for fixing by hot crimping of the lower part 14.
  • each side wall 24 comprises a concave semi-cylindrical housing 44 which opens vertically downwards.
  • the upper wall 22 Transversely on either side of the central lumen 32, and substantially at mid-length, the upper wall 22 comprises a locking lug 46 with a substantially V-shaped profile.
  • the locking pins 46 are slightly offset longitudinally forwards with respect to the central axis A of the housings 44 (See figure 10 ).
  • the lower part 14 of the housing 10 is here a piece of conductive metal sheet which is produced by cutting and bending.
  • the lower part comprises a horizontal rectangular lower plate 50 which is extended laterally by two vertical and longitudinal side cheeks 52.
  • the dimensions of the lower part 14 are complementary to those of the upper part so that, in the assembled position, the side cheeks 52 each extend along an outer face 25 of a side wall 24, and substantially over the entire height of the upper part 12.
  • each side cheek is extended by an electrical connection tab 56 which extends outwardly in a vertical and transverse plane.
  • the horizontal lower plate 50 has three holes 60 arranged in a triangle, each of which is crossed vertically by a vertical stud 42 of the upper part 12.
  • the horizontal lower plate 50 comprises two branches 62 of elastic return.
  • Each return branch 62 is produced by cutting and folding and its active front free end section 64 is folded inwardly of the internal housing of the upper part 12 of the housing 10.
  • each return branch 62 is able to deform elastically, in particular downwards.
  • the elastic return branches 62 are shown in their elastically unstressed state.
  • the internal contact blade 16 is here a double blade, of symmetrical design with respect to the PVM plane, which is made from a conductive metal sheet by cutting and bending.
  • the two internal electrical contact blades proper are interconnected by a horizontal cross member 66 for fixing.
  • the cross member 66 has two holes 68 spaced transversely and each of which is crossed vertically by a vertical stud 40 of the upper part 12.
  • Each internal contact blade 16 comprises, successively and longitudinally from rear to front, a rear fixing section 70, an intermediate actuating section 72 and a front contact section 74.
  • the rear fixing section 70 to which the cross member 66 is attached for its fixing under the lower face 23 of the upper wall 22 of the upper part 12 of the housing 10, here extends horizontally.
  • Each rear fixing section 70 is here extended longitudinally towards the rear by an external electrical connection section 76 which is here shaped as a stitching pin which projects longitudinally beyond the open rear transverse face 28.
  • each intermediate actuating section 72 extends horizontally in the extension of sections 70 and 76, inside the housing 20, approximately halfway up (See figures 9 and 10 ).
  • Each actuating section 72 is delimited by a flat lower face 73.
  • each intermediate actuating section 72 is extended forward by a front contact section 74 which is inclined vertically downwards and which terminates in a bent end 78 whose convexity is oriented towards the inner upper face 51 of the horizontal lower plate 50.
  • each front contact section 74 is shaped such that its bent free end 78 is in elastic contact support towards the bottom against a portion facing the upper face 51 of the lower plate 50.
  • This portion facing the upper face 51 of the lower plate 50 constitutes a fixed lower track of electrical contact to establish a electrical switching path between the lower plate 50 and its electrical connection tabs 56 on the one hand, and the connecting stitching sections 76 on the other hand.
  • This upward movement is obtained by elastic deformation of the internal contact blades 16 by acting on the intermediate actuating sections 72.
  • Such an actuation and change of state to an open state is carried out by means of the actuator 18.
  • Actuator 18 is generally in the form of an internal transverse actuator shaft 80 and a drive arm 82.
  • the internal shaft 80 and its drive arm 82 are here produced in a single piece by molding in plastic material.
  • the internal transverse shaft For its rotating mounting, pivoting in both directions, relative to the housing 10, the internal transverse shaft comprises, at each of its two opposite transverse ends, a cylindrical journal 84 which is received in rotation, almost without play, in a complementary housing 44 of the upper part 12 inside which it is kept trapped by the lower plate 50.
  • the actuating shaft is thus mounted to rotate about the axis A.
  • the internal shaft 80 is extended by a rectilinear rotational drive arm.
  • the drive arm 82 extends vertically through the central lumen 32 above the top wall 22.
  • the drive arm 82 is slightly offset longitudinally towards the rear relative to the vertical plane passing through the axis of rotation A.
  • the transverse width of the drive arm 82 is slightly less than the transverse width of the central lumen 32.
  • the maximum angular positions that the actuator 18 can reach in both directions correspond to the abutment of the drive arm 82 with the inclined front transverse edge 34 or with the inclined rear transverse edge 36.
  • the internal shaft 80 comprises a locking lug 86 which is able to cooperate with a vis-à-vis locking notch 46.
  • the upper end of the cylindrical profile of the locking lug 86 is slightly offset longitudinally forward and extends vis-à-vis the associated locking notch 46.
  • the assembly consisting of a locking lug 46 and a locking notch 86 constitutes means for locking the drive arm 82, and therefore the double internal contact blade 16, in its second stable upper position in which the electrical switching is interrupted.
  • each control cam 88 is generally triangular and has a flat upper horizontal section 92 which ends with a front elbow 94 and a rear control elbow 96.
  • Each bend 94, 96 is in the form of a convex cylinder arc.
  • the front elbow 94 is extended downwards by an inclined plane section 98.
  • Each cam 88 is arranged transversely to the right of a return branch 62 and each inclined plane section 98 of the cam profile extends with play opposite an active section of the front free end 64.
  • the upper face of the upper horizontal plane section 92 extends here with a slight vertical play by relative to the lower face 73 of the associated actuating section 72.
  • the switch 100 is shown in a rest position in which the electrical switching path is established by each of the two front contact sections 74 of the internal double contact blade 16, each internal blade 16 being in a low position with respect to the lower plate 50.
  • NC normally closed NC of the electrical switch.
  • This pivoting causes the rear control elbow 96 to cooperate with the associated actuating section 72 of the internal blade 16 and a lifting of the front contact section 74.
  • the opening of the electrical contact 51-78 is almost immediate, but the angular actuation stroke by pivoting of the actuating arm 82 can be continued.
  • the electric switch 100 thus has an absorption capacity for a large actuation overtravel.
  • This position or state NOi is unstable because, as soon as one ceases to apply an actuating force to the actuating arm 82, the actuator 18 is elastically returned to its central angular position of rest by the action of the actuators. recall branches 62.
  • This pivoting causes the front control elbow 94 to cooperate with the associated actuating section 72 and a lifting of the front contact section 74 of each internal blade 16.
  • Each internal blade 16 is then in a second high position relative to the lower plate 50.
  • the opening of the electrical contact 51-78 is almost immediate. It is a second stable open position NOs of the electrical switch in which the electrical switching path is interrupted.
  • This position or state NOs is stable because, when one ceases to apply an actuating force to the actuating arm 82, the latter remains angularly locked by the locking means 46-86.
  • the drive arm 82 has caused an elastic deformation of the upper partition to retract the locking notch 46 and make the locking lug 86 pass angularly to the other side.
  • the drive shaft 80 is then again in its central angular position and the electrical switching path is restored.
  • the double design of the internal contact blade 16 allows, for certain applications, to have contact redundancy which is useful if for example the electrical switch is not waterproof and that an impurity enters between the free end 78 and the upper face 51.
  • the internal contact blade 16 is simple, that is to say that it has only one part with an intermediate actuating section 72 and a front contact section 74, 78.
  • the other section 72 'of symmetrical design and similar to that of the actuating section 72, is not extended by a contact section and therefore has no function of establishing or interrupting an electrical contact.
  • the locking notch 46 is a window which is formed in an elastically deformable tab 99 which is made centrally in the lower plate 50, transversely between the two elastic return branches 62.
  • the complementary locking lug 86 is formed at the lower part of the actuator 18.
  • the drive shaft 80 comprises a lug in the form of a spout which is able to be received in the window 46 when the electrical switch is locked in its stable state.
  • open NOs See figure 21 ).
  • the rear profile of the locking lug 86 is shaped to allow unlocking.
  • the lower plate 50 comprises two stitching pins 56 which project longitudinally beyond the open rear transverse face 28, like the electrical connection sections 76 of the internal contact blade.
  • an electrical switch 100 can be mounted on a face 104 of an electronic card comprising in particular a printed circuit board 102 which is delimited by an edge 106 to constitute an assembly 200.
  • Switch 100 is adjacent to edge 106 of plate 102 and, as can be seen from figure 23 , the outer face of its wall 22 is substantially aligned with the edge 106.
  • Such a mounting and positioning of the electrical switch 100 can, if the assembly 200 is placed in an electronic device (not shown) in the direction indicated by the arrow F of the figure 23 , allow automatic unlocking of the electrical switch 100 by the coming into contact of the actuating arm 82 with a part facing the electronic device, or belonging to automated assembly means.

Landscapes

  • Push-Button Switches (AREA)
  • Tumbler Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
EP20194561.5A 2019-10-25 2020-09-04 Elektrischer minischalter vom typ normalerweise geschlossen, mit einer verriegelungsposition des offenem kontaktes Active EP3813089B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1911956A FR3102606B1 (fr) 2019-10-25 2019-10-25 Commutateur électrique miniature du type normalement ferme comportant une position de verrouillage a contact ouvert

Publications (2)

Publication Number Publication Date
EP3813089A1 true EP3813089A1 (de) 2021-04-28
EP3813089B1 EP3813089B1 (de) 2022-03-30

Family

ID=70008609

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20194561.5A Active EP3813089B1 (de) 2019-10-25 2020-09-04 Elektrischer minischalter vom typ normalerweise geschlossen, mit einer verriegelungsposition des offenem kontaktes

Country Status (4)

Country Link
US (1) US11107641B2 (de)
EP (1) EP3813089B1 (de)
CN (1) CN112735867A (de)
FR (1) FR3102606B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11181257B1 (en) * 2020-09-25 2021-11-23 Streamlight, Inc. Flashlight assembly having rotary cam-actuated push-button switch

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2725438A (en) * 1952-09-15 1955-11-29 Arrow Hart & Hegeman Electric Alternating current switch mechanism
AT250484B (de) * 1961-06-07 1966-11-10 Angelo Teruzzi Elektrischer Schalter
US6040543A (en) * 1999-08-13 2000-03-21 Egs Electrical Group Llc Explosion proof toggle switch
US9218926B1 (en) * 2013-03-15 2015-12-22 E.M.B. Corporation Normally-closed switch with positive stops

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6762379B1 (en) * 2003-04-08 2004-07-13 Shin Jiuh Corp. Micro switch
US8383975B2 (en) * 2011-01-28 2013-02-26 Zippy Technology Corp. Enhanced withstand voltage micro switch
JP5835037B2 (ja) * 2012-03-14 2015-12-24 オムロン株式会社 スイッチ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2725438A (en) * 1952-09-15 1955-11-29 Arrow Hart & Hegeman Electric Alternating current switch mechanism
AT250484B (de) * 1961-06-07 1966-11-10 Angelo Teruzzi Elektrischer Schalter
US6040543A (en) * 1999-08-13 2000-03-21 Egs Electrical Group Llc Explosion proof toggle switch
US9218926B1 (en) * 2013-03-15 2015-12-22 E.M.B. Corporation Normally-closed switch with positive stops

Also Published As

Publication number Publication date
FR3102606B1 (fr) 2021-09-24
US11107641B2 (en) 2021-08-31
US20210125794A1 (en) 2021-04-29
FR3102606A1 (fr) 2021-04-30
CN112735867A (zh) 2021-04-30
EP3813089B1 (de) 2022-03-30

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