US3653777A - Control mechanism - Google Patents

Control mechanism Download PDF

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Publication number
US3653777A
US3653777A US705328A US3653777DA US3653777A US 3653777 A US3653777 A US 3653777A US 705328 A US705328 A US 705328A US 3653777D A US3653777D A US 3653777DA US 3653777 A US3653777 A US 3653777A
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United States
Prior art keywords
control
actuating member
pressure actuating
faces
control elements
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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 - Lifetime
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US705328A
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English (en)
Inventor
Helmut Bross
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.)
JACOB RITTER KG J
Original Assignee
JACOB RITTER KG J
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Publication date
Application filed by JACOB RITTER KG J filed Critical JACOB RITTER KG J
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    • 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

Definitions

  • CONTROL MECHANISM [72] Inventor: Helmut Bross, Altenberg uber Nuremberg,
  • the mechanism is of a construction which enables it to be made relatively small and of a few parts, e. g. of injection molded plastic, so as to take up little space and is particularly suitable for use in a writing implement for advancing and withdrawing a writing cartridge within the housing of the implement.
  • the invention relates to a control mechanism for the advancing and withdrawal of a functioning part displaceable in a housing against or under the influence of a spring, and for locking the said part in the advanced or withdrawn position.
  • a writing medium carrier for example a cartridge
  • a housing is arranged for longitudinal displacement within a housing, the point thereof projecting out of the housing in the advanced position (writing position) and being covered by the housing in the withdrawn position (inoperative position).
  • control mechanism designs for writing instruments may, however, also be applied to control mechanisms for other purposes, for example for electrical switching devices.
  • a pressure actuating member which is mounted for displacement in a housing and the actuating end of which extends out of the housing, there being provided on the said actuating member control elements which, relatively to the central axis, extending in the displacement direction, of the pressure actuating member, are arranged at the same height and project radially from the body of the pressure actuating member, the control elements having an end which is near" to and far from the actuating end of the pressure actuating member and there being provided at the far end of the control elements at least one control face designed as a bevel face, the bevel face extending in the direction of a tangent of a circle the center point of which is located on the above-mentioned central axis of the pressure actuating member.
  • At least one stop designed between the above-mentioned strips, on the inner side of the housing, is provided for the control elements of the rotatable control member travelling-in into the intermediate spaces between the strips, on transition from the above-mentioned advanced position into the above mentioned withdrawn position.
  • a spring in the housing which said spring influences the rotatable control member in such manner that the control faces thereof are, on advance of the pressure actuating member, pressed against the control faces thereof and, on withdrawal of the pressure actuating member, pressed against the control faces of the strips, whereby, due to the pressing-on of the control faces of the rotatable control member against the control faces of the further mechanism parts, further-rotation of the rotatable control member is produced.
  • FIG. 2 shows a development of the parts, essential to the invention, of the control mechanism
  • FIG. 4 shows an elevational view of the rotatable control member
  • FIG. 9 shows a development of the parts which are essential to the invention of a further form of embodiment.
  • FIG. 11 shows a diagrammatic partial lateral elevation of the pressure pin for the embodiment according to FIGS. 9 and 10;
  • the pressure pin co-operates with a sleeve-shaped control or actuating member 7 (FIG. 4), from the outer side of which control elements 8 project.
  • the latter cooperate furthermore with strips 9, 10, which are of uniform width and which are shaped-on at the inner side of the housing 1, thus being in one piece therewith, or with bevelled control faces shaped at their forward end (FIG. 3).
  • short strips 9 alternate with long strips 10, the long strips extending further forwardly than the short strips.
  • the peripheral spacing between the long strips 10 corresponds to the peripheral extent of the control elements 8 of the control member 7.
  • the peripheral spacing between the control elements 8 corresponds to the peripheral extent of the strips 10.
  • the peripheral spacing between the strips 9, 10 corresponds to the peripheral extent of the control element 6 of the pressure pin.
  • FIG. 1 The arrangement relatively to each other of the parts of the mechanism shown in FIGS. 3'to 5, in the assembled condition, is apparent from FIG. 1.
  • a control element 6 of the pressure pin 4 (FIG. 2).
  • the surfaces provided at the longitudinal sides of the strips serve for guiding the control element 6. Due to this form of guiding, the pressure pin 4 is secured against rotation.
  • control elements 8 are formed, in their side facing the rear end of the housing, within each case one notch 17 on which there is formed, on the delimiting wall thereof disposed forwardly in the direction of rotation of the control member, a bevelled control face 18.
  • the control faces l8, 18 extend in the same direction as the control faces 13 of the control element 6 of the pressure pin 4.
  • a bevel portion 19 which extends oppositely to the control face 18 and which, in view of its function (to be discussed later), is designated a guiding-back face.
  • control face 10 which is designed as a bevel face and which terminates in a point 10''.
  • the control face 10' extends in the same direction as the control faces 13 and 18.
  • control elements 8 of the control member 7 are pushed, under the influence of the force of the spring 3, into the interspaces between the long strips 10, or as far as the short strips 9 will permit such movement, so that the said short strips serve as a stop for the control elements 8 in the withdrawn position.
  • This position of the control elements 8 is designated A in FIG. 2.
  • the control face 18 projects into the intermediate space 11 between the strips 10, 9 and does so with a peripheral (minimum) projection extent such that, on depression of the pressure pin in the direction of the arrow 21, it is on the one hand assured that the control faces 13 of the control element 6 slide off in the direction of the bottom of the groove 17 and, on the other hand, in the lowermost position (designated B in FIG.
  • the stops for the rearward position of the control element 6 of the pressure pin are formed by a roof-shaped step 24.
  • the abutment end of the control element 6 is bevelled in correspondingly roof-like manner (FIG. 5).
  • the wall thickness of the housing is smaller in the zone of the step 24 and in the axial prolongation 25 of the intermediate spaces 11, 12, than the wall thickness in the zone of the strips 9,10. This results in a saving of material and shorter cooling times in the injection mould.
  • the control member 7 there-are provided on the control member 7 two forwardly extending prolongations 27 which, in the example of embodiment illustrated, extend from two approximately diametrically opposite control elements 8 and have at their free end a protuberance projecting radially outwardly.
  • the projections 27 may extent outwardly, so that, on fitting the control member 7 into the housing 1, they are pressed (with production of a resilient storing force) against the housing inner wall, in a zone located before the ends of the strips 10.
  • the strips 9, 10 are designed to be wider than the control element 6.
  • the guiding-back faces 19, 19' are restricted, in respect of their radial extending line, to the face zone of the control elements 8 corresponding in axial projection to the end face of the support sleeve 5.
  • the guiding-back faces 19 extend peripherally into the intermediate spaces 26 between the control elements 8.
  • the guiding-back face 19 covers over the notch 17.
  • the control elements 6 are so designed that their control faces 13 and their edges 14 located at the tip extend inwardly in a zone 14" corresponding, in axial projection, with the end face of the support sleeve 5. In the zone 14", the control elements 6 cooperate with the guiding-back faces 19,19.
  • the guiding-back faces may be given a larger angle of inclination relatively to the central axis of the pressure pin than in the case of the example of embodiment according to FIGS. 1 to 5. In this way, the guiding-back of the pressure knob in the shifting phase is assisted.
  • the guiding-back faces 29 are formed not on the control member 7, but on the pressure pin 4.
  • the support sleeve 5 is drawn forwardly as far as the tip 14 of the control element 6.
  • the guiding-back face 29, which'extends oppositely to the control face 13, is formed by notches 36 in the end face of the support sleeve 5.
  • the side 31 disposed opposite the guiding-back face 19 of a notch 36 extends in the same direction as the control face 13 and is designed as an inwardly directed prolongation of the control face 13.
  • the faces 29 and 31 meet at the point 30.
  • the notches 17 formed in the control member 8 are designed in the same way as in the case of the example of embodiment according to FIGS. 6 to 8, so that the apices 14 of the teeth of the control elements 8 co-operate with the guiding-back faces 29 at the end face of the support sleeve 5.
  • This form of embodiment has the advantage that the radial extending line of the walls of the support sleeve 5 can be exploited for the formation of the guiding-back faces of the pressure pin, in this way saving space in the radial direction.
  • the short strips 9 have been dispensed with.
  • the interspace 32 formed between the long strips 10 is, in this case, completely filled, in the peripheral direction, by the control element 6 of the pressure pin 4.
  • the back-stop for the control element 6 is formed by a strip 33 which extends into the intermediate space 32 and with which the control element 8 cooperates, but does so only indirectly, i.e., via the control element 6. Consequently, the strip 33 also limits the withdrawal movement of the control member 8.
  • the design of the control face 13 and of the guiding-back face 29 on the control element 6 corresponds to the design shown in FIG.
  • FIG. 12 has the special advantage that the design of the inner walls of the housing 1 and, in consequence of the reduction of half of the number of control elements, the design of the pressure pin is greatly simplified.
  • the control element 8 has the same design as in the case of the example of embodiment according to FIGS. 6 and 8.
  • control element 6 Formed on the control element 6, which again completely fills the intermediate space 32 between the long strips 10, at the end of two projections delimiting the recess 16, on the control element 6, there is in each case a control or actuating face 13 extending over the end face of the support sleeve 5, so that the latter once again participates in the formation of the control faces 13.
  • the cartridge is supported (in contradistinction to what takes place in the case of the example of embodiment according to FIG. 1) not against the control member 7 but against the pressure pin 4.
  • the latter is connected with a rodshaped member 34 which projects out of its forward end face and has at its free end a collar 34 against which the rear cartridge end bears.
  • Control mechanism for the advance and withdrawal of a functional part displaceable in a housing against or under the influence of a spring, and for locking the said part in advanced and withdrawn positions, such mechanism comprising a pressure actuating member which is displaceably mounted in said housing and has a central axis extending in the direction in which the member is displaceable; an actuating end to said pressure actuating member extending out of the housing; control elements provided on said pressure actuating member, such control elements being arranged at the same height relatively to said central axis of the pressure actuating member and projecting radially from the pressure actuating member, the control elements having a near and remote end relatively to said actuating end of the pressure actuating member; at least one control face provided at the remote end of the control elements and designed as a bevelled face which extends in the direction of a tangent to a circle, the centre of which is located on the said central axis of the pressure actuating member; strip-shaped projections formed internally on said housing and extending, in space
  • control mechanism specified in claim 2 and including a bevelled face at one end of each of said further strip-shaped projections, such bevelled face being directed in the same direction as the control faces of said control elements of the rotatable control member and positioned to be engaged by such control elements in the withdrawn position.
  • control mechanism specified in claim 1 and including a sleeve-shaped part formed on said pressure actuating member and having an open end towards the rotatable control member, such part carrying the control elements of the pressure actuating member.
  • control mechanism specified in claim 6, in which the control faces of the control elements of the pressure actuating member and the edges at the apices of the said control faces, in the direction towards the central axis of the pressure actuating member, extend into a zone which, in axial projection, coincides with the open end of the sleeve-shaped part of the pressure actuating member.
  • each of said control elements of the pressure actuating member has an end facing the actuating end of the pressure actuating member of bevelled roof-shaped form.

Landscapes

  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Pens And Brushes (AREA)
US705328A 1967-07-22 1968-02-14 Control mechanism Expired - Lifetime US3653777A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB0093619 1967-07-22

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DE (1) DE1561801A1 (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4115015A (en) * 1977-04-11 1978-09-19 Ancos Co., Ltd. Retractable pen with internal tip seating
US5535869A (en) * 1993-10-26 1996-07-16 Warn Industries, Inc. Pulse actuated clutch for vehicle drive lines
US6705868B1 (en) 1998-03-18 2004-03-16 Purdue Research Foundation Apparatus and methods for a shape memory spring actuator and display
US20040123957A1 (en) * 2002-12-30 2004-07-01 Industrial Technology Research Institute Lift lock for blind
FR2873325A1 (fr) * 2004-07-26 2006-01-27 Bic Sa Soc Mecanisme pour instrument d'ecriture, instrument d'ecriture comprenant un tel mecanisme et procede de fabrication
US20090279985A1 (en) * 2008-05-09 2009-11-12 Foxnum Technology Co., Ltd. Fixing unit
US20140238624A1 (en) * 2013-02-22 2014-08-28 Shih-Ming Lin Window blind
US20150292529A1 (en) * 2012-10-29 2015-10-15 Debiotech S.A. Device for extracorporeal blood treatment
US9376859B1 (en) * 2012-08-16 2016-06-28 Newell Window Furnishings, Inc. Tilter assembly for a window covering

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3137276A (en) * 1955-08-30 1964-06-16 Kahn David Inc Protract-retract mechanism and writing instrument including same
US3288115A (en) * 1965-07-16 1966-11-29 Radiant Pen Corp Ball-point pen mechanism
US3318289A (en) * 1965-05-11 1967-05-09 Northern Ind Products Bi-stable mechanism

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3137276A (en) * 1955-08-30 1964-06-16 Kahn David Inc Protract-retract mechanism and writing instrument including same
US3318289A (en) * 1965-05-11 1967-05-09 Northern Ind Products Bi-stable mechanism
US3288115A (en) * 1965-07-16 1966-11-29 Radiant Pen Corp Ball-point pen mechanism

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4115015A (en) * 1977-04-11 1978-09-19 Ancos Co., Ltd. Retractable pen with internal tip seating
US5535869A (en) * 1993-10-26 1996-07-16 Warn Industries, Inc. Pulse actuated clutch for vehicle drive lines
US5586632A (en) * 1993-10-26 1996-12-24 Bigley; Jon Pulse actuated interlock mechanism
US20050069842A1 (en) * 1997-03-18 2005-03-31 Schleppenbach David A. Apparatus and methods for a shape memory spring actuator and display
US7018209B2 (en) 1997-03-18 2006-03-28 Purdue Research Foundation Apparatus and methods for a shape memory spring actuator and display
US6705868B1 (en) 1998-03-18 2004-03-16 Purdue Research Foundation Apparatus and methods for a shape memory spring actuator and display
US20040123957A1 (en) * 2002-12-30 2004-07-01 Industrial Technology Research Institute Lift lock for blind
US6786270B2 (en) * 2002-12-30 2004-09-07 Industrial Technology Research Institute Lift lock for blind
WO2006018504A2 (fr) * 2004-07-26 2006-02-23 Societe Bic Mecanisme pour instrument d'ecriture, instrument d'ecriture comprenant un tel mecanisme et procede de fabrication
FR2873325A1 (fr) * 2004-07-26 2006-01-27 Bic Sa Soc Mecanisme pour instrument d'ecriture, instrument d'ecriture comprenant un tel mecanisme et procede de fabrication
WO2006018504A3 (fr) * 2004-07-26 2007-04-05 Bic Soc Mecanisme pour instrument d'ecriture, instrument d'ecriture comprenant un tel mecanisme et procede de fabrication
US8128301B2 (en) 2004-07-26 2012-03-06 Societe Bic Mechanism for a writing implement, a writing implement including mechanism, and a method of manufacture
US8231296B2 (en) 2004-07-26 2012-07-31 Societe Bic Mechanism for a writing implement, a writing implement including such a mechanism, and a method of manufacture
US20090279985A1 (en) * 2008-05-09 2009-11-12 Foxnum Technology Co., Ltd. Fixing unit
US9376859B1 (en) * 2012-08-16 2016-06-28 Newell Window Furnishings, Inc. Tilter assembly for a window covering
US20150292529A1 (en) * 2012-10-29 2015-10-15 Debiotech S.A. Device for extracorporeal blood treatment
US10138911B2 (en) * 2012-10-29 2018-11-27 Debiotech S.A. Device for extracorporeal blood treatment
US20140238624A1 (en) * 2013-02-22 2014-08-28 Shih-Ming Lin Window blind
US8851148B2 (en) * 2013-02-22 2014-10-07 Shih-Ming Lin Window blind

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Publication number Publication date
DE1561801A1 (de) 1971-01-28

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