EP0134509B1 - Bouton-poussoir - Google Patents
Bouton-poussoir Download PDFInfo
- Publication number
- EP0134509B1 EP0134509B1 EP84108321A EP84108321A EP0134509B1 EP 0134509 B1 EP0134509 B1 EP 0134509B1 EP 84108321 A EP84108321 A EP 84108321A EP 84108321 A EP84108321 A EP 84108321A EP 0134509 B1 EP0134509 B1 EP 0134509B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- push button
- button part
- movable
- button according
- arms
- 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.)
- Expired
Links
Images
Classifications
-
- 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
- H01H3/12—Push-buttons
- H01H3/122—Push-buttons with enlarged actuating area, e.g. of the elongated bar-type; Stabilising means therefor
- H01H3/125—Push-buttons with enlarged actuating area, e.g. of the elongated bar-type; Stabilising means therefor using a scissor mechanism as stabiliser
Definitions
- the invention relates to a push button with an actuating surface on a movable key part, which is large compared to an electrical contact to be actuated, and that of a guide device which guides the movable key part against an immovable key part, the guide device on the one hand on the movable and on the other is articulated to the immovable key part and the guide device transmits an actuating force exerted on an edge region of the actuating surface to an opposite edge region of the movable key part.
- Such a pushbutton is, for example, the " space bar of a keyboard.
- the guide device is formed by a swivel bracket which is articulated on the two key ends. When actuated on one key end, it takes the other end of the key with it, so that the switching of the electrical contact is largely independent of the location of the actuation of the key.
- large-area keys are often provided in addition to the key mentioned, which cover an area which is a multiple of the predominant key size. With such buttons, it must be ensured that when the button is pressed, the assigned switch contact is always actuated in the same way, regardless of which button position is pressed.
- Pushbuttons of the type mentioned at the outset often do not have their own resetting spring elements. They are often brought into their starting position by a restoring force, which also replaces the associated electrical contact. For example, rubber membranes are provided for this. In the case of large-area keys of the type mentioned, it must be ensured that the pushbutton safely returns to its starting position even if no own return spring is provided and the restoring force of the contact arrangement is small and does not act on a central point of the key.
- the object of the invention is to propose a push button of the type mentioned, in which there is no risk of jamming or jamming, neither when actuating nor when resetting, even if the button is large in length and width compared to the contact to be actuated or the other buttons a keyboard.
- the above object is achieved in that the guide device is formed by two scissors, the two arms of each scissor being rotatably connected on one axis, that the two axes are kept in alignment with one another, in that the upper free ends of the four scissor arms at four bearing points of the movable button part are held in the actuating direction and are movable transversely thereto, the four bearing points including a rectangular area which largely coincides with the actuating area, and that the lower free ends of the four scissor arms are held on the immovable button part in the actuating direction and are movable transversely thereto.
- the guide device formed by the double scissors ensures that when the button is pressed off-center, the other areas are taken parallel, so that the button does not tilt.
- the switching behavior of the contact is not influenced by the guide device.
- the guide device also ensures that the restoring force emanating from the electrical contact is transmitted to the spaced-apart bearing points, so that the key moves into its initial position without great frictional losses and does not jam either.
- the double scissors do not require a large overall height, so that the actuating surface of the push button according to the invention can have the same height as the other buttons and can also be arranged on the same contact plate as this.
- the arms of the scissors are combined in pairs to form a frame.
- the axis of one pair of scissors is preferably gripped by fingers of the other pair of scissors. This results in a simple, coherent structure of the two scissors.
- a push button 1 has a movable button part 2 and an immovable button part 3. This is placed on a base plate 4 of a keyboard.
- the base plate 4 has bores 5 in which spring-elastic switching bodies 6 are arranged.
- Switching chambers 7 of a switching film 8 are arranged below the bores 5.
- the electrically conductive coverings are provided in the switching chamber 7, which contact each other when one of the switching bodies 6 is actuated.
- the movable key part 2 consists of a carrier 9 and a key cap 10 placed thereon.
- the actuating area of the key cap or actuating surface 10 is large in comparison to the spring-elastic switching body 6.
- the switching bodies 6 are thus on the Base plate 4 distributed that the square keys mainly provided on the keyboard are tight.
- a guide device is provided between the immovable button part 3 and the carrier 9. This consists of two scissors 11 and 12. In FIG. 1, the scissors 12 lie in the plane of the drawing behind the scissors 11 and are aligned with them in the view according to FIG.
- the scissors 11 has two arms 13 and 14 which are pivotally connected in their center about an axis 17. Accordingly, arms 15 and 16 of the scissors 12 are pivotable about an axis 18. The axes 17 and 18 are aligned and are kept aligned. Pins 19 and 20 are formed on the upper free ends of the arms 13 and 14. Pins 21 and 22 are formed on the lower free ends of the arms 13 and 14. Accordingly, pins 23, 24 and 25 and 26 are formed on the arms 15 and 16.
- 3 guide pockets 21 ', 22', 25 'and 26' are formed on the immovable button part for receiving the pins 21, 22, 25 and 26. These allow the pins to be displaced in direction A, but not in actuation direction B or reset direction R.
- a cavity 27 is formed on the immovable button part 3 and is provided for receiving the switch body 6.
- An opening 28 adjoins the cavity 27.
- the key part 3 has a guide sleeve 29 which is provided on the outside with locking lugs 30.
- 3 guide strips 31 are arranged on the button part. Pins 32 are used for attachment to the base plate 4 (see FIGS. 2 and 3).
- the carrier 9 has support tongues 19 ', 20', 23 'and 24' for the pins 19, 20 and 23 and 24.
- a switching plunger 33 is formed, which fits through the opening 28 and protrudes into the cavity 27.
- the carrier 9 has latching tongues 34 which are assigned to the latching lugs 30. Together with them, they limit the stroke of the support 9 relative to the button part 3.
- a support 35 is also arranged on the support 9, which engages between the guide strips 31. With additional locking tongues 36 in addition to the strip 35 and corresponding locking lugs 37 on the outside of the guide strips 31, the stroke can be limited in addition to the locking pair 30, 34.
- the carrier 9 has openings 38 for fixing the key cap 10 (cf. FIGS. 4 and 5).
- Pins 39 which can be positively pressed into the openings 38, are formed on the underside of the key cap 10. It has a bolt 40 which engages through the carrier 9 into the guide sleeve 29.
- 10 approaches 41 are distributed on the outer edge of the key cap, which hit the outer edge of the immovable key part 3 when the key 1 is pressurized.
- the pins 19, 20, 23 and 24 are held so that they are in the transverse direction A, but not in Actuation direction B or reset direction R can move. As can be seen in FIG.
- these four bearing points of the pins 19, 20, 23 and 24 enclose a rectangular area which largely coincides with the actuation area (base area of the key cap 10).
- the rectangle circumscribed by the bearing points coincides with the larger part of the L-shaped actuating surface of the key cap 10.
- the rectangle that defines the bearing pockets 21 ', 22', 25 is just as large as the rectangle that describes the bearing positions mentioned ', 26' circumscribe the formed bearing points of the lower pins 21, 22, 25 and 26.
- the double scissors 11, 12 are composed of two identical frame parts.
- One of the frame parts 42 is shown in FIGS. 8 and 9.
- the frame part 42 forms the arms 13 and 15. Accordingly, the pins 19, 21 and 23, 25 are formed on it.
- An axle stub 18 ' is formed on the frame part 42 in the vicinity of the arm 15.
- the middle of the arm 13 is interrupted in the vicinity of the axis 17 and ends there in two fingers 43, which form a bearing shell 44 with a diameter equal to the stub axle 18 '.
- a frame part which is the same as the frame part 42 is snapped into it by 180 ° C. offset from it.
- the fingers 43 of the frame part 42 encompass the stub axle 17 'of the other frame part, while its fingers enclose the stub axle 18'.
- the double scissors 11, 12 are created from only two components, the axes 17, 18 being aligned at the same time and forcibly moving with one another.
- the pin closest to the pressure point has the tendency to go down.
- the associated arm is pivoted, causing its axis, for example 17, to move downward.
- the other arm is pivoted in the opposite direction and the corresponding other pin is taken along.
- the other axis, for example 18, is also moved downward, so that the other two arms are also pivoted.
- all four upper pins 19, 20, 23 and 24 move down evenly, so that completely regardless of the pressure point, the movable key part 2 moves parallel to the base plate 4 down. A jamming in the guides 29, 40; 31, 35 is therefore not to be feared.
- Due to the uniform downward movement of the pins 19, 20, 23 and 24, the switching plunger 33 moves with the carrier 9 uniformly onto the switching body 6 regardless of the pressure point. This guarantees safe switching.
- the restoring force of the switching body 6 acts on the switching plunger 33. Although this is located completely outside the center of the button 1, the movable button part 2 is reset in parallel. The restoring movement acts primarily on the finger 19. However, its arm 13 pulls the arm 14 and the axis 18 and thus also the arms 15 and 16 along the axis 17.
- the described double scissors 11, 12 are constructed as plastic parts.
- the double scissors can also be formed from wire.
Landscapes
- Push-Button Switches (AREA)
- Massaging Devices (AREA)
- Eye Examination Apparatus (AREA)
Claims (13)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT84108321T ATE47249T1 (de) | 1983-08-17 | 1984-07-14 | Drucktaste. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3329698 | 1983-08-17 | ||
DE19833329698 DE3329698A1 (de) | 1983-08-17 | 1983-08-17 | Drucktaste |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0134509A2 EP0134509A2 (fr) | 1985-03-20 |
EP0134509A3 EP0134509A3 (en) | 1987-05-06 |
EP0134509B1 true EP0134509B1 (fr) | 1989-10-11 |
Family
ID=6206768
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP84108321A Expired EP0134509B1 (fr) | 1983-08-17 | 1984-07-14 | Bouton-poussoir |
Country Status (5)
Country | Link |
---|---|
US (1) | US4580022A (fr) |
EP (1) | EP0134509B1 (fr) |
JP (1) | JPS6062017A (fr) |
AT (1) | ATE47249T1 (fr) |
DE (1) | DE3329698A1 (fr) |
Families Citing this family (42)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3616669A1 (de) * | 1986-05-16 | 1987-11-19 | Jung Albrecht Fa | Betaetigungsvorrichtung fuer schalteinrichtungen |
DE8708373U1 (de) * | 1987-06-13 | 1987-08-13 | Preh, Elektrofeinmechanische Werke Jakob Preh Nachf. Gmbh & Co, 8740 Bad Neustadt | Drucktasteneinrichtung |
JPH0451388Y2 (fr) * | 1988-06-22 | 1992-12-03 | ||
DE3824980A1 (de) * | 1988-07-22 | 1990-01-25 | Cherry Mikroschalter Gmbh | Stuetzmechanik fuer mehrfachtastenkoepfe |
US5247143A (en) * | 1990-03-09 | 1993-09-21 | Canon Kabushiki Kaisha | Key switch |
DE4039379C1 (fr) * | 1990-12-10 | 1992-04-30 | Siemens Nixdorf Informationssysteme Ag, 4790 Paderborn, De | |
US5278372A (en) * | 1991-11-19 | 1994-01-11 | Brother Kogyo Kabushiki Kaisha | Keyboard having connecting parts with downward open recesses |
US5280147A (en) * | 1991-11-19 | 1994-01-18 | Brother Kogyo Kabushiki Kaisha | Keyswitch assembly with a key support limiting transverse, longitudinal and rotational movement of the key |
US5278371A (en) * | 1992-02-14 | 1994-01-11 | Brother Kogyo Kabushiki Kaisha | Keyswitch assembly with support mechanism coupled to support plate beneath printed circuit board |
JP2595132Y2 (ja) * | 1992-02-14 | 1999-05-24 | ブラザー工業株式会社 | キースイッチ |
JP2590622Y2 (ja) * | 1992-03-30 | 1999-02-17 | ブラザー工業株式会社 | キースイッチ装置 |
JP2577359Y2 (ja) * | 1992-06-09 | 1998-07-23 | ブラザー工業株式会社 | キースイッチ装置 |
TW367513B (en) * | 1992-06-11 | 1999-08-21 | Alps Electric Co Ltd | Key switch |
JP2950391B2 (ja) * | 1992-07-17 | 1999-09-20 | ブラザー工業株式会社 | キースイッチ装置の組立方法 |
US5504283A (en) * | 1992-10-28 | 1996-04-02 | Brother Kogyo Kabushiki Kaisha | Key switch device |
US5268545A (en) * | 1992-12-18 | 1993-12-07 | Lexmark International, Inc. | Low profile tactile keyswitch |
JP2800617B2 (ja) * | 1993-01-06 | 1998-09-21 | ブラザー工業株式会社 | キースイッチ |
FR2706647B1 (fr) * | 1993-06-16 | 1995-09-01 | Martin Francois | Dispositif de détection de commande pour actionneur. |
US5424516A (en) * | 1993-09-23 | 1995-06-13 | Emmons; Charles E. | Low profile pushbutton switch |
JP3201102B2 (ja) * | 1993-11-05 | 2001-08-20 | ブラザー工業株式会社 | キースイッチ装置及びその組立方法 |
US5457297A (en) * | 1994-04-20 | 1995-10-10 | Chen; Pao-Chin | Computer keyboard key switch |
DE9407412U1 (de) * | 1994-05-04 | 1994-09-29 | Chen, Pao-Chin, Taipeh/T'ai-pei | Tastenschalter für einen Computer |
DE69504602T2 (de) * | 1994-07-20 | 1999-03-18 | Brother Kogyo K.K., Nagoya, Aichi | Tastschalter |
JP3201175B2 (ja) * | 1994-10-20 | 2001-08-20 | ブラザー工業株式会社 | キースイッチ |
JPH0945181A (ja) * | 1995-07-28 | 1997-02-14 | Brother Ind Ltd | キースイッチ装置 |
US5758763A (en) * | 1995-08-17 | 1998-06-02 | Hosiden Corporation | Pantograph type keyboard switch |
DE19536071C1 (de) * | 1995-09-28 | 1996-08-29 | Preh Elektro Feinmechanik | Drucktasteneinrichtung |
US5768093A (en) * | 1995-12-12 | 1998-06-16 | Dell U.S.A., L.P. | Technique for minimizing the height of a portable computer |
US5767464A (en) * | 1996-12-05 | 1998-06-16 | Texas Instruments Incorporated | Electronic device low profile keyboard switch assembly with deployed and stored actuating mechanism |
US5828015A (en) * | 1997-03-27 | 1998-10-27 | Texas Instruments Incorporated | Low profile keyboard keyswitch using a double scissor movement |
CN1084004C (zh) * | 1997-11-28 | 2002-05-01 | 鸿海精密工业股份有限公司 | 按键装置 |
JP3749371B2 (ja) * | 1998-02-06 | 2006-02-22 | ミネベア株式会社 | 押ボタンスイッチ |
DE19811230C1 (de) * | 1998-03-14 | 1999-07-29 | Preh Elektro Feinmechanik | Große, mehrere kleine Tastenfelder abdeckende Drucktaste für ein Keyboard |
US6004051A (en) * | 1998-12-18 | 1999-12-21 | Silitek Corporation | Key structure of computer keyboard |
US6056459A (en) * | 1999-01-05 | 2000-05-02 | Chicony Electronics Co., Ltd. | Balance device for key |
JP2000311543A (ja) * | 1999-04-26 | 2000-11-07 | Alps Electric Co Ltd | キースイッチ装置 |
TW454933U (en) * | 2000-01-31 | 2001-09-11 | Darfon Electronics Corp | Scissors-type keystroke structure |
US6781077B2 (en) | 2000-12-14 | 2004-08-24 | Think Outside, Inc. | Keyswitch and actuator structure |
DE102005025301B4 (de) | 2005-06-02 | 2008-12-18 | Preh Keytec Gmbh | Einrichtung zur manuellen Eingabe und Anzeige von Daten |
DE102008034603B3 (de) * | 2008-07-25 | 2009-09-17 | Preh Gmbh | Vorrichtung zur parallelen Führung einer Taste, eines Touch-Pads oder Touch-Screens |
JP5304480B2 (ja) | 2009-06-26 | 2013-10-02 | 沖電気工業株式会社 | キースイッチ構造 |
JP5936467B2 (ja) * | 2012-07-11 | 2016-06-22 | シチズン電子株式会社 | キースイッチ装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE100590C (fr) * | ||||
DE1227976B (de) * | 1963-07-27 | 1966-11-03 | Calor Emag Elektrizitaets Ag | Mehrphasiges isolierstoffgekapseltes Hochspannungsschaltgeraet |
US3720801A (en) * | 1972-02-03 | 1973-03-13 | Alps Electric Co Ltd | Space key |
AU466541B2 (en) * | 1972-08-10 | 1975-10-30 | Oak Industries Inc | Low profile keyboard switch |
US3916150A (en) * | 1974-03-04 | 1975-10-28 | Stackpole Component Co | Data machine keyboard assembly with elongated key cap for actuating an electric switch |
GB2077195B (en) * | 1980-06-07 | 1984-05-16 | Burroughs Corp | Stabilised button for an electrical keyboard |
DE3032282C2 (de) * | 1980-08-27 | 1982-10-28 | Siemens AG, 1000 Berlin und 8000 München | Tastenschalter mit einem Tastengehäuse zum Einbau in einer mit Ausnehmungen versehenen Trageplatte von Tastaturen in Schreibmaschinen |
US4433225A (en) * | 1983-02-22 | 1984-02-21 | General Instrument Corporation | Keytop levelling mechanism |
US4453063A (en) * | 1983-08-03 | 1984-06-05 | Illinois Tool Works Inc. | Keyswitch configuration with torque rod holder |
-
1983
- 1983-08-17 DE DE19833329698 patent/DE3329698A1/de active Granted
-
1984
- 1984-07-14 EP EP84108321A patent/EP0134509B1/fr not_active Expired
- 1984-07-14 AT AT84108321T patent/ATE47249T1/de not_active IP Right Cessation
- 1984-08-15 JP JP59169470A patent/JPS6062017A/ja active Granted
- 1984-08-16 US US06/641,450 patent/US4580022A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0415967B2 (fr) | 1992-03-19 |
JPS6062017A (ja) | 1985-04-10 |
DE3329698C2 (fr) | 1988-01-28 |
ATE47249T1 (de) | 1989-10-15 |
US4580022A (en) | 1986-04-01 |
EP0134509A3 (en) | 1987-05-06 |
DE3329698A1 (de) | 1985-03-07 |
EP0134509A2 (fr) | 1985-03-20 |
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