EP0552597A1 - Instrument d'écriture avec mine déplaçable entre une position de repos et une position d'écriture - Google Patents

Instrument d'écriture avec mine déplaçable entre une position de repos et une position d'écriture Download PDF

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Publication number
EP0552597A1
EP0552597A1 EP93100010A EP93100010A EP0552597A1 EP 0552597 A1 EP0552597 A1 EP 0552597A1 EP 93100010 A EP93100010 A EP 93100010A EP 93100010 A EP93100010 A EP 93100010A EP 0552597 A1 EP0552597 A1 EP 0552597A1
Authority
EP
European Patent Office
Prior art keywords
writing
sensor switch
sensor
housing
implement according
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
EP93100010A
Other languages
German (de)
English (en)
Other versions
EP0552597B1 (fr
Inventor
Martin Kuhn
Gerhard Pohl
Paul Roming
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.)
Gebrueder Schmidt Fabrik fuer Feinmechanik GmbH and Co KG
Original Assignee
Gebrueder Schmidt Fabrik fuer Feinmechanik GmbH and Co KG
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 Gebrueder Schmidt Fabrik fuer Feinmechanik GmbH and Co KG filed Critical Gebrueder Schmidt Fabrik fuer Feinmechanik GmbH and Co KG
Publication of EP0552597A1 publication Critical patent/EP0552597A1/fr
Application granted granted Critical
Publication of EP0552597B1 publication Critical patent/EP0552597B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K24/00—Mechanisms for selecting, projecting, retracting or locking writing units
    • B43K24/02—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K8/00—Pens with writing-points other than nibs or balls
    • B43K8/22—Pens with writing-points other than nibs or balls with electrically or magnetically activated writing-points

Definitions

  • the invention relates to a writing instrument according to the preamble of claim 1.
  • a writing instrument of this type in which the mine is advanced from the rest position into the writing position by triggering an electric motor by means of a sensor such that the mine is extended when the writing instrument is in the hand for writing is taken and automatically withdrawn when the writing instrument is put down.
  • the sensor can be a manually operated pressure switch or membrane switch, a position-dependent switch or a thermal switch that responds to the warmth of the hand.
  • the invention is intended to create a writing instrument of the type mentioned in the introduction, in which, although an automatic mine transport into the writing position when the device is guided by a writing hand, an automatic mine return to the rest position takes place only after the writing process has been intentionally ended.
  • the automatic mine transport into the writing position takes place in the writing device according to the invention regardless of the position of use when the handle area of the housing is touched by the hand guiding the writing device.
  • the automatic return of the mine to the rest position when the grip zone is released only takes place if the device is simultaneously in an approximately vertical position, whereby a deviation of, for example, ⁇ 10 ° from the vertical can be permitted.
  • the device can thus be inserted into a clothing pocket in a vertical position immediately after the desired end of the writing process, without fear of contamination of the clothing.
  • the response time for mine feed and mine return can be set in a manner familiar to the person skilled in the art on the electronic circuit provided in the housing.
  • the writing instrument and thus the sensor switch to be closed by hand contact Although released, but placed on a writing pad or the like, or in any case not moved into a vertical position, there is no return of the lead from the writing position to the rest position, so that the writing instrument can be used again at any time without having to wait for the advance of the lead.
  • the electronic circuit controls all the necessary logic operations.
  • the drive can be designed electromagnetically as one or more DC motors or stepper motors with or without a gear, wherein the DC motor can be designed with mechanical and / or optical, inductive, capacitive changeover contacts. It is also possible to use an electromagnetic motor with one or more actuators or, for example, one or more electrostatic piezo motors which bring one or more hydraulic and / or pneumatic actuators into defined positions.
  • a pushbutton switch, a sensor or also a toggle or vibrating switch can also be provided to actuate the drive motor.
  • a writing device is known from DE 39 04 578 A1, in which the lead is advanced mechanically to the writing position by pressing a button or another mechanism.
  • the mine is still held in the writing position after the writing process has ended and is released after a predetermined period of time, after which it automatically shifts to the rest position.
  • the setting of this predetermined Period is difficult and requires complex facilities. However, since it is of the order of 15 to 20 minutes, an exact setting is not important.
  • the subclaims relate to advantageous refinements of the writing instrument according to the invention.
  • the housing of the writing instrument consists of the writing tip 12, the shaft 14, the clip bush 15 and the rear cap 16.
  • the housing 10 has a common longitudinal axis 18.
  • the rear end of the lead 20 is connected to a gear block 28 which, in a manner not shown, can consist, for example, of a threaded bolt and a nut rotatable thereon, which converts the rotary movement of the threaded bolt into a longitudinal movement.
  • the thread pitch can be chosen so that self-locking occurs in the idle state.
  • the gear block 28 is connected to a DC motor 30, which is supplied with current by means of a battery 32 which is interchangeably fitted in the cap 16.
  • a projection 34 comes to a stop against a limit switch 36 fastened in the shaft, as a result of which the motor 30 is switched off from the power supply.
  • a limit switch 38 ensures that the current is switched off when the rest position according to FIG. 1 is reached.
  • An SMD circuit board 40 printed with an electronic circuit is arranged inside the clip socket 15 near the rear end of the motor 30 and is connected to the battery 32 via a contact spring 42.
  • An insulated connecting wire 44 is passed through the circuit board 40 and establishes the connection with the DC motor 30.
  • a sensor switch generally designated 46, is arranged in the clip socket 15, which contains a position sensor consisting of an inclined plane 48, a plurality of balls 50 rolling on the inclined plane 48, a contact disk 52 and a contact ring 54 arranged concentrically to the longitudinal axis 18.
  • the inclined plane 48 is arranged so that the conductive balls only make contact between the contact disk 52 and the contact ring 54 when the longitudinal axis 18 is at an angle of approximately ⁇ 10 ° with respect to the vertical with the writing tip 12 downward. Otherwise, the balls 50 interrupt the contact, so that the sensor switch 46 is open.
  • the electronic circuit printed on the SMD board 40 including the connections to the battery 32, to the DC motor 30 and to the various sensor switches and limit switches, is shown in FIG. 2.
  • the first sensor switch to be closed by hand contact between the shaft 14 and the writing tip 12 is designated HK in FIG. 2.
  • the second sensor switch 46 containing a position sensor is designated LS in FIG. 2.
  • the limit switch 38 defining the rest position of the lead 20 is designated RS in FIG. 2 and the limit switch 36 defining the write position is designated SS in FIG. 2.
  • the switches HK, LS and RS are connected to a first AND circuit 64 via lines 58, 60 and 62, respectively, while the switch SS is connected to a second AND circuit 68 via a line 66.
  • the switch HK is also connected to the second AND circuit 68 via a line 70.
  • the four switches in parallel are connected via a common line 72 to the battery 32, which in turn is connected via lines 74 and 76 to a transistor output stage consisting of four transistors 78, 80, 82 and 84.
  • the AND circuits 64 and 68 are also connected to the transistor output stage via lines 86, 88 and 90, 92, respectively. In the transistor output stage, the motor 30 is switched on by means of a line 94.
  • the switches HK, LS and SS are normally open while the switch RS is closed. No current then flows to the motor 30 and thus there is no loss of energy.
  • the motor 30 is supplied with current and the refill 20 is advanced into the writing position.
  • the switch SS is closed, whereby the power supply to the motor is switched off again.
  • the HK switch remains closed and there is no further actuation of the refill, even if the writing instrument is held in an approximately horizontal position by the leading hand and the LS switch is therefore still in the open position.
  • the refill remains in the writing position because the LS switch remains open. Only when the grip area of the writing instrument is released when it is in an approximately vertical position does the switch HK open with the switch LS closed, as a result of which the refill is transported back into the rest position. When the rest position is reached, the switch RS is closed and the power supply to the motor 30 is switched off.
  • a clip 56 is attached in a manner known per se for inserting the writing instrument in an approximately vertical position.
  • this clip 56 acts as a safety switch and is designed, for example, as an electrical conductor between the cap 16 and the shaft 14. If the device is inserted into a clothing pocket after the writing process has been completed and fixed with the clip, the contact point between clip 56 and shaft 14 is opened by the material forming the clothing pocket. As a result, the power supply to the DC motor is immediately interrupted; if the (accidental) actuation of the manual contact between the shaft 14 and the writing tip 12 occurs, mine 20 remains in the rest position.
  • the clip (56) can be designed in such a way that it acts on one of the sensor switches described above by lifting it from the contact point and in this way indirectly interrupts the power supply to the DC motor.

Landscapes

  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Toys (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
EP93100010A 1992-01-21 1993-01-02 Instrument d'écriture avec mine déplaçable entre une position de repos et une position d'écriture Expired - Lifetime EP0552597B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4201479 1992-01-21
DE4201479A DE4201479A1 (de) 1992-01-21 1992-01-21 Schreibgeraet mit zwischen ruhestellung und schreibstellung verschiebbarer mine

Publications (2)

Publication Number Publication Date
EP0552597A1 true EP0552597A1 (fr) 1993-07-28
EP0552597B1 EP0552597B1 (fr) 1995-08-23

Family

ID=6449933

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93100010A Expired - Lifetime EP0552597B1 (fr) 1992-01-21 1993-01-02 Instrument d'écriture avec mine déplaçable entre une position de repos et une position d'écriture

Country Status (4)

Country Link
EP (1) EP0552597B1 (fr)
JP (1) JPH05262091A (fr)
DE (2) DE4201479A1 (fr)
ES (1) ES2080529T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2486689A (en) * 2010-12-21 2012-06-27 Michael Phillip Hawthorne Automatic drive unit for pens and handheld instruments/tools
US8860548B2 (en) 2009-04-02 2014-10-14 Devecka Enterprises, Inc. Methods and apparatus for art supply useage compliance

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6092951A (en) * 1998-02-05 2000-07-25 Greene; Michael Electro-mechanical writing implement
KR20030025755A (ko) * 2001-09-21 2003-03-29 이기혁 감각센서를 이용한 자동펜
CN106394070A (zh) * 2015-08-03 2017-02-15 富泰华工业（深圳）有限公司 伸缩装置及具有该伸缩装置的笔

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2142284A (en) * 1983-06-27 1985-01-16 Giorgio Piquillo Handwriting instrument
DE3904578A1 (de) * 1989-02-15 1990-08-16 Wittek Goetz Ulrich Schreibgeraet mit zeitgesteuerter, vollautomatischer kappe

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2722575A (en) * 1952-06-20 1955-11-01 Lawrence H Dobkins Safety switch for the ignition circuit of a motor vehicle
DE3228211A1 (de) * 1982-02-11 1983-08-18 geb. Ehrmuth Heide 8100 Garmisch-Partenkirchen Brehm Sparschalteinrichtung bei stromkreisen insbesondere fuer hotelzimmer
DE3545166A1 (de) * 1985-12-20 1987-06-25 Heilemann & Co Schreibgeraete Schreibgeraet, wie kugelschreiber u.dgl.
US4827385A (en) * 1988-04-27 1989-05-02 Gammache Richard J Pocket flashlight
DE8911606U1 (fr) * 1989-09-29 1990-01-18 Seirin-Kasei & Co. Deutschland Gmbh, 6078 Neu-Isenburg, De

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2142284A (en) * 1983-06-27 1985-01-16 Giorgio Piquillo Handwriting instrument
DE3904578A1 (de) * 1989-02-15 1990-08-16 Wittek Goetz Ulrich Schreibgeraet mit zeitgesteuerter, vollautomatischer kappe

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 013, no. 082 (P-833)23. Februar 1989 *
PATENT ABSTRACTS OF JAPAN vol. 014, no. 419 (P-1103)10. September 1990 *
PATENT ABSTRACTS OF JAPAN vol. 015, no. 339 (M-1152)28. August 1991 *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 184 (M-1243)6. Mai 1992 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8860548B2 (en) 2009-04-02 2014-10-14 Devecka Enterprises, Inc. Methods and apparatus for art supply useage compliance
GB2486689A (en) * 2010-12-21 2012-06-27 Michael Phillip Hawthorne Automatic drive unit for pens and handheld instruments/tools

Also Published As

Publication number Publication date
DE59300492D1 (de) 1995-09-28
JPH05262091A (ja) 1993-10-12
DE4201479A1 (de) 1993-07-22
EP0552597B1 (fr) 1995-08-23
ES2080529T3 (es) 1996-02-01

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