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WO1984004200A1 - Interrupteur electrique - Google Patents

Interrupteur electrique Download PDF

Info

Publication number
WO1984004200A1
WO1984004200A1 PCT/DE1984/000090 DE8400090W WO8404200A1 WO 1984004200 A1 WO1984004200 A1 WO 1984004200A1 DE 8400090 W DE8400090 W DE 8400090W WO 8404200 A1 WO8404200 A1 WO 8404200A1
Authority
WO
WIPO (PCT)
Prior art keywords
switch
carrier
ball
switch according
switch board
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.)
Ceased
Application number
PCT/DE1984/000090
Other languages
German (de)
English (en)
Inventor
Manfred Koslar
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.)
Createc Gesellschaft fuer Elektrotechnik mbH
Original Assignee
Createc Gesellschaft fuer Elektrotechnik mbH
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 Createc Gesellschaft fuer Elektrotechnik mbH filed Critical Createc Gesellschaft fuer Elektrotechnik mbH
Publication of WO1984004200A1 publication Critical patent/WO1984004200A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/16—Contacts characterised by the manner in which co-operating contacts engage by abutting by rolling; by wrapping; Roller or ball contacts

Definitions

  • the invention relates to an electrical switch according to the preamble of the main claim.
  • Switches for electrical and electronic devices are known in a large number of embodiments.
  • Printed circuit boards or circuit boards are used in many of these devices, the conductor tracks on the boards sometimes serving as contact surfaces for switches which are connected by means of resilient contact bridges.
  • Such a switch is known from DE-OS 26 17 704, which has an insulating body to which pairs of stamped electrical contacts are attached opposite one another.
  • the electrical connection between the opposing ones Contact pairs, each of which are connected to corresponding electrical conductors, are carried out via a ball which is guided in a carrier and is pushed by the latter between the opposing contacts.
  • the contacts have holes in which the ball can snap into place.
  • the invention has for its object to provide an electrical switch, in particular for electrical or electronic devices with printed circuit boards or the like, which, with a simple structure, inexpensive manufacture and reliable reproducibility in manufacture, ensures a perfect electrical connection even after long-term use, whereby the to meet the special requirements of spatial density and the complexity of modern circuits.
  • the switch has a very simple structure and, in its simplest form, consists of only two mechanical parts. Tolerance problems that occur with every switch production can be largely solved.
  • the ball used as the contact element fits easily regardless of possible tolerances always on a hole edge in such a way that the edge of the hole lies linearly against the surface of the ball. If the locking height is subject to tolerances, this compensates the ball by a more or less high immersion depth. This applies accordingly in the event that the contact surfaces on the switch board should be slightly worked into the holes during the service life, since the immersing ball ensures that these path changes are compensated for.
  • the ball used in the switch is a very good locking element, since it has a clearly noticeable locking point even with a small difference in level with the lowest rolling friction, whereby the spring is further improved by applying spring force to the ball and resulting system pressure.
  • the fact that the ball in the carrier has sufficient freedom of movement ensures that it engages properly and thus makes perfect contact even if the respective holes or bores in the surface plane have different tolerances. Because the ball is movably guided in the carrier, it does not always lie in the same areas on the contacts, but is always brought into a different position by the rolling, so that an infinite number of contact circles are available.
  • the configuration of the contact surfaces directly on the bores can be selected such that the rolling path of the ball, after lifting off the contact lines outside the conductor tracks, rests exclusively on insulation material, as a result of which the abrasion due to friction is extremely low, both on the ball and on the contacts , whereby there is hardly any abrasion on the metal surfaces, because there is only rolling friction due to the rolling of the ball.
  • the switch Due to the simple structure of the switch, its assembly can be carried out independently of a soldering process. As a result, all components present on the circuit board can first be applied and soldered. After soldering, the circuit board can be subjected to a washing process, so that acids, vapors and rosin which can occur on the contact surfaces and which can get onto the contact surfaces can be removed therefrom. This eliminates the need to assemble switches on printed circuit boards as well as possible.
  • Figure 1 shows schematically a switch board with contact balls.
  • Figure 2 is a partially sectioned view of the entire structure of the switch according to the invention.
  • Fig. 3 shows a section and a top view of the carrier carrying the balls.
  • a switch board 5 which has a plurality of recesses 4 in the form of bores or punched holes. Several electrical and electronic components can be located on this switch board 5.
  • the switch board 5 is provided on its surface with conductor tracks 6 in the form of printed circuits or the like.
  • the conductor tracks 6 are brought to the recesses 4 in segments and interrupted by them.
  • the figure shows schematically how the interrupted conductor tracks are electrically connected.
  • balls 3 are provided as contact elements, which are moved parallel to the surface of the switch board 5 in accordance with the arrow 13 and engage in the recesses 4.
  • the balls 3 are electrically conductive and their surface is hard nickel-plated and then galvanized with a material typical of contact materials, for example silver, gold, platinum or tin.
  • the conductor tracks can also be provided with a corresponding material in the area of the recesses 4 for better contact.
  • the balls 3 lie with a part of their surface designed as a circular ring on the edge of the recesses and thus on the segment-like parts of the conductor tracks 6 which are brought up to the recesses 4 so that the conductor tracks 6 are electrically connected via the balls 3.
  • Fig. 2 shows the switch according to the invention in the assembled state.
  • the balls 3 are held by a cage-like carrier 1 shown in more detail in FIG. 3.
  • this carrier 1 has cavities 2 for receiving the balls, which are cylindrical or dome-shaped.
  • the carrier 1 is cut out in an arc shape on its surface, so that the cavities 2 are delimited by tongue-shaped tabs 8, which serve as spring elements.
  • the cavities 2 have wedge-shaped projections on their edges facing the switch board 5.
  • the carrier which can be produced as a plastic injection-molded part, is designed to be arcuate over its longitudinal axis in the non-installed state.
  • the balls 3 When mounting the switch, the balls 3 are pressed into the cavities 2, the walls of the cavities being expanded and thus the Resistance is overcome by the wedge-shaped projections 12. The balls snap into the cavities 2 and cannot be lost because the wedge-shaped projections prevent them from rolling out.
  • the carrier 1 is pressed onto the surface of the switch board 5 by a housing 11, which is connected to the switch board 5, for example by screws, so that the carrier as a whole lies parallel to the surface of the switch board 5 under tension.
  • the balls 3 are depressed by the tongue-shaped tabs 8, which in turn have a certain spring action in order to be able to compensate for different height differences.
  • the carrier 1 is on the one hand a guide and mounting element for the balls and on the other hand it serves as a contact pressure spring and as a detent spring. Accordingly, the ball is both a connecting contact element and a locking element.
  • the balls 3 are moved by the carrier 1 in a longitudinal movement parallel to the surface of the switch card 5.
  • a ball 3 engaged in the recess 4 is lifted perpendicularly from the contact line, the bevels on the wedge-shaped projections 12 engaging under the ball 3 and lifting them out of the holes during movement, so that the lifting pressure is reduced.
  • the carrier 1 has four cavities 2 for receiving the Balls 3 on.
  • a different number of balls can also be provided, these cooperating with corresponding recesses provided in the switch board 5, which can also be arranged in a grid pattern.
  • the carrier 1 can also be moved in a rotational movement.

Landscapes

  • Push-Button Switches (AREA)

Abstract

Interrupteur électrique avec au moins une bille de contact électriquement conductrice disposée dans un support et permettant de relier au moins deux contacts. Est en outre prévue une platine d'interrupteur avec au moins un évidement, sur laquelle les contacts sont amenés à l'évidement de façon segmentaire, similairement à une piste conductive. La bille est recueillie dans un support et est guidée de manière mobile par celui-ci parallèlement à la surface de la platine d'interrupteur, ce qui permet à la bille de s'engager dans l'évidement.
PCT/DE1984/000090 1983-04-15 1984-04-13 Interrupteur electrique Ceased WO1984004200A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833313937 DE3313937A1 (de) 1983-04-15 1983-04-15 Elektrischer schalter

Publications (1)

Publication Number Publication Date
WO1984004200A1 true WO1984004200A1 (fr) 1984-10-25

Family

ID=6196659

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1984/000090 Ceased WO1984004200A1 (fr) 1983-04-15 1984-04-13 Interrupteur electrique

Country Status (3)

Country Link
EP (1) EP0139730A1 (fr)
DE (1) DE3313937A1 (fr)
WO (1) WO1984004200A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2189367B (en) * 1986-04-21 1990-07-04 Kanzaki Paper Mfg Co Ltd Method for producing a laser-printed picture
US4954674A (en) * 1987-09-10 1990-09-04 Telefonaktiebolaget L M Ericsson Matrix crosspoint switching device
CN109767942A (zh) * 2019-01-18 2019-05-17 青岛朗正电子科技有限公司 一种新型轻触开关

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1084809B (de) * 1956-10-03 1960-07-07 Standard Elektrik Lorenz Ag Wendeschalter
US3591740A (en) * 1969-01-27 1971-07-06 Meridian Industries Inc Selector switch assembly
FR2099346A5 (fr) * 1970-07-30 1972-03-10 Siemens Ag
FR2358740A1 (fr) * 1976-07-14 1978-02-10 Amp Inc Procede de fabrication d'un interrupteur electrique et l'interrupteur ainsi obtenu
FR2508229A1 (fr) * 1981-06-23 1982-12-24 Jaeger Commutateur rotatif a rotation bidirectionnelle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1084809B (de) * 1956-10-03 1960-07-07 Standard Elektrik Lorenz Ag Wendeschalter
US3591740A (en) * 1969-01-27 1971-07-06 Meridian Industries Inc Selector switch assembly
FR2099346A5 (fr) * 1970-07-30 1972-03-10 Siemens Ag
FR2358740A1 (fr) * 1976-07-14 1978-02-10 Amp Inc Procede de fabrication d'un interrupteur electrique et l'interrupteur ainsi obtenu
FR2508229A1 (fr) * 1981-06-23 1982-12-24 Jaeger Commutateur rotatif a rotation bidirectionnelle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2189367B (en) * 1986-04-21 1990-07-04 Kanzaki Paper Mfg Co Ltd Method for producing a laser-printed picture
US4954674A (en) * 1987-09-10 1990-09-04 Telefonaktiebolaget L M Ericsson Matrix crosspoint switching device
CN109767942A (zh) * 2019-01-18 2019-05-17 青岛朗正电子科技有限公司 一种新型轻触开关

Also Published As

Publication number Publication date
EP0139730A1 (fr) 1985-05-08
DE3313937A1 (de) 1984-10-18

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