EP0153159B1 - Instrument pour écrire - Google Patents

Instrument pour écrire Download PDF

Info

Publication number
EP0153159B1
EP0153159B1 EP85300989A EP85300989A EP0153159B1 EP 0153159 B1 EP0153159 B1 EP 0153159B1 EP 85300989 A EP85300989 A EP 85300989A EP 85300989 A EP85300989 A EP 85300989A EP 0153159 B1 EP0153159 B1 EP 0153159B1
Authority
EP
European Patent Office
Prior art keywords
refill
weight
plunger
cam
retracted
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
Application number
EP85300989A
Other languages
German (de)
English (en)
Other versions
EP0153159A1 (fr
Inventor
Hidehei C/O Kotobuki & Co. Ltd Kageyama
Takahiko C/O Kotobuki & Co. Ltd Suzuki
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.)
Kotobuki and Co Ltd
Original Assignee
Kotobuki and Co Ltd
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 Kotobuki and Co Ltd filed Critical Kotobuki and Co Ltd
Publication of EP0153159A1 publication Critical patent/EP0153159A1/fr
Priority claimed from JP25765185A external-priority patent/JPS62118923A/ja
Application granted granted Critical
Publication of EP0153159B1 publication Critical patent/EP0153159B1/fr
Expired 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
    • B43K24/08—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions operated by push-buttons
    • B43K24/084—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions operated by push-buttons with saw-like or analogous cams
    • 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
    • B43K24/03—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions operated by flicking or tilting

Definitions

  • This invention relates to a writing instrument of the type having a refill which is projected from, and retracted into, an outer casing or cylinder.
  • knocking or plunger type writing instruments have been proposed wherein a refill is projected from its outer cylinder when the writing instrument is to be used.
  • this type of instrument it is required for the user to depress a plunger, to do so, the manner of holding the writing instrument must inevitably be changed as between bringing the instrument into readiness for writing and the writing itself.
  • a writing instrument of the knocking or plunger type modified to include a free inertial weight which is slidable within the instrument to operate a cam set to alternately project or retract a writing element, see e.g. FR-A-72009 (patent of addition to FR-A-1,129,101) or CH-A-55874, or to have the mass of the plunger sufficiently large that longitudinal shaking of the instrument can cause the writing element to project or retract, see e.g. GB-A-941984.
  • a writing instrument comprising a refill axially slidable in an outer cylinder between a retracted position and a projected position; a rotating cam set which is located in the vicinity of the rear of the refill and which includes a cam bar for operating the cam set to move the refill between its retracted and projected positions; a spring member for biasing the refill rearwardly towards the retracted position; an inertial weight slidable within the outer cylinder in the vicinity of the cam bar so that, when the cylinder is shaken with a force in excess of a given level, the refill is depressed against the bias of the spring member and the cam set is operated to retract or project the refil, and an operating plunger projecting from the rear of the outer cylinder for the manual operation of the cam bar, whereby the refill may be projected and retracted either by manual operation of the plunger, chracterised in that inertial weight is hollow, and is loosely disposed between the cam bar and the plunger, and retained between the plunger and the cam bar
  • FR-A-1129 101 discloses a writing instrument having all of the features defined in the first part of claim 1.
  • an outer casing or cylinder 1 contains a refill 2 which can slide in the axial direction between the projected position shown and a retracted position, a rotation cam set 3 provided in the vicinity of the rear of the refill 2, and a spring member 4 for biasing the refill 2 rearwardly towards the retracted position.
  • the rotating cam set 3 is of known form and consists of a cam casing 5 secured to the inner wall of the outer cylinder 1, and a rotor 6 which is slidable within the cam casing 5 and the extreme end of which is engaged with the rear end of the refill 2.
  • Rotation generating surfaces 7 are formed on the inner circumferential surface of the cam casing 5, as shown in Figure 2. Those surfaces comprise first and second inclined surfaces 7a and 7b, a stepped portion 7c, and long grooves 7d, and are engaged with the rotor 6 to apply prescribed rotation to the latter.
  • Axial projections 6a are provided on the outer circumference of the rotor 6, and those projections 6a so mesh with the rotation generating surfaces 7 that axial movement of the rotor 6 is accomplished by rotation and operation of the cam set 3.
  • the refill is thereby moved from its inoperative, retracted position to its operative projected position, or vice versa.
  • the cam casing 5 meshing with the rotor 6 may be dispensed with, rotation generating surfaces 7 being directly formed on the inner wall of the outer cylinder 1.
  • a plunger or knocking portion 9 is fitted to a cam bar 8 of the rotating cam set 3, enabling the cam set to be operated manually.
  • the plunger 9 also acts as an inertial weight, and has a relatively high density, e.g. a metal.
  • the rotating cam set 3 may be operated by manually pressing inwardly the plunger or knocking portion 9 as in known writing instruments, in order to project and retract the refill 2.
  • the whole writing instrument may be shaken so that the assembly consisting of refill 2, rotor 6, cam bar 8 and plunger 9 is driven towards the extreme end of the outer cylinder 1 with a force in excess of a given level.
  • the rotating cam set 3 is operated by the shaking motion to project and retract the refill 2, in a manner similar to its operation by the knocking movement of plunger 9.
  • the refill 2 and the rotating cam set 3 are not operated by merely directing downwardly the writing instrument or applying a shaking motion of a power less than such given level.
  • the retracted refill 2 is moved to the projected position against the spring bias force, in quite the same manner as the usual knocking action, so that the writing instrument is brought into a state of readiness for writing.
  • the writing instrument is again shaken in the same manner as described above so that the refill 2 is retracted into the outer cylinder 1 by the bias force of the spring member 4, on operation of the cam set 3 by inertial movement of the assembly.
  • the refill 2 can thus be projected and retracted by either of the two operational modes.
  • an inertial weight 10 for assisting the projection and retraction of the refill 2 is loosely disposed between the cam bar 8 and the plunger 9:
  • the refill 2 can be projected and retracted by either of the two operational modes.
  • the refill 2 is more positively projected and retracted by shaking than in the previously described writing instrument.
  • the same relationships with those mentioned above are valid in respect of the respective forces.
  • the refill can be projected and retracted by merely shaking the writing instrument so that easy and rapid writing becomes possible, the assembly operation is simple, and the number of parts to be used may be reduced, whereby inexpensive writing instruments can be provided.

Landscapes

  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)

Claims (2)

1. Instrument pour écrire qui comprend une recharge (2) pouvant coulisser axialement dans un cylindre extérieur (1) entre une position rétractée et une position avancée ou saillante; une came composée rotative (3) qui est placée au voisinage de l'extrémité arrière de la recharge (2) et qui comporte une barrette (8) destinée à déplacer la recharge (2) entre ses positions rétractées et avancées; un ressort (4) qui sollicite la recharge (2) en arrière vers la position rétractée; une masselotte (10) pouvant coulisser à l'intérieur du cylindre extérieur (10) au voisinage de la barrette de came (8), la disposition étant telle que quand on secoue le cylidre (1) avec une force supérieure à une limite donnée, la recharge (2) s'abaisse à l'encontre de la force du ressort (4)) et la came composée (3) est actionnée de façon à rétracter ou à faire avancer la recharge (2), et un piston d'actionnement (9) se dressant sur l'arrière du cylindre extérieur (1) qui permet d'actionner manuellement la barrette de came (8), ce qui fait que la recharge (2) piston peut être soit sortie, soit rétractée en actionnant le piston (9) à la main, caractérise en ce que la masselotte (10) est creuse et est disposée librement entre la barrette de came (8) et le piston (9), et est retenue entre le piston (9) et ladite barrette de came (8), autour de la tige reliant ledit piston et ladite barrette.
2. Instrument graphique selon la revendication 1, dans lequel, lorsqu'on actionne la came rotative (3) en le secouant afin de faire sortir et rentrer la recharge (2), les relations suivantes:
1. (B1+B2+B3+B4) + D < A < (B↑+B2+B3+B4) + C, ou
2. (Bi+B2+B3+B4) + D < A < (B,+B2) + C, ou
3. (B1+B2+B3+B4) + D < A < (B1+B2) + C, ou
4. (B1+B2+B3+B4) + D < A < B, + C, ou
5. (B1+B2+B3+B4) + D < A < C

sont valables en ce qui concerne les différentes forces énumérées ci-dessous:
1. la force de solicitation arrière à exercer par le ressort (4) sur la recharche (2);
2. le poids (B1) de la recharge, le poids (B2) du rotor (6), le poids (B3) de la barrette de came (8) et le poids (B4) du têton (9);
3. la force d'inertie avant C par rapport au poids (B1+B2+B3+B4) obtenue en secouant avec une force supérieure à la force voulue, et
4. la force d'inertie avant D par rapport au poids (B1+B2+B3+B4) obtenue en secouant avec une force inférieure au niveau voulu.
EP85300989A 1984-02-22 1985-02-14 Instrument pour écrire Expired EP0153159B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2297784 1984-02-22
JP22977/84U 1984-02-22
JP25765185A JPS62118923A (ja) 1985-11-19 1985-11-19 プレス用トランスフア−フイ−ド装置に於ける静油圧駆動回路

Publications (2)

Publication Number Publication Date
EP0153159A1 EP0153159A1 (fr) 1985-08-28
EP0153159B1 true EP0153159B1 (fr) 1988-05-18

Family

ID=26360271

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85300989A Expired EP0153159B1 (fr) 1984-02-22 1985-02-14 Instrument pour écrire

Country Status (2)

Country Link
EP (1) EP0153159B1 (fr)
DE (1) DE3562734D1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201018590A (en) * 2008-11-12 2010-05-16 Spark Gold Co Telescopic writing instrument having improved linkage arrangement

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1129101A (fr) * 1955-06-28 1957-01-16 Stylographe à bille rentrante
GB785249A (en) * 1955-09-14 1957-10-23 Alfred Doettlinger Improvements in or relating to writing instruments
DE1090547B (de) * 1959-03-04 1960-10-06 Riepe Werk Kugeldruckmechanik fuer Schreibgeraete
CH558724A (en) * 1972-05-12 1975-02-14 Farine Claude Retractable tip ball point pen - top cap pushed down to force block inside onto ratchet mechanism

Also Published As

Publication number Publication date
DE3562734T (fr) 1988-06-23
DE3562734D1 (en) 1988-06-23
EP0153159A1 (fr) 1985-08-28

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