EP0795423A1 - Stylo à bille actionné par pression - Google Patents
Stylo à bille actionné par pression Download PDFInfo
- Publication number
- EP0795423A1 EP0795423A1 EP96890046A EP96890046A EP0795423A1 EP 0795423 A1 EP0795423 A1 EP 0795423A1 EP 96890046 A EP96890046 A EP 96890046A EP 96890046 A EP96890046 A EP 96890046A EP 0795423 A1 EP0795423 A1 EP 0795423A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ring
- ribs
- pin
- actuating mechanism
- button
- 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
Links
Images
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
Definitions
- the invention relates to a retractable ball pen.
- ballpoint pens comprise a housing in which a refill with an ink reservoir and a writing tip is inserted.
- the refill can be moved back and forth between a writing position in which the writing tip protrudes from the housing and a rest position in which the writing tip is located within the housing by means of a push button and an actuating mechanism.
- a spring is arranged between the housing and the lead, which pushes the lead towards the rest position.
- the actuating mechanism is also located in the housing, its push button protrudes therefrom, the lead presses on the actuating mechanism on the side facing away from the push button.
- the housing is usually in two parts and then consists of a long tip-side part with an internal thread and a shorter, push-button-side part with a matching external thread.
- the invention relates in particular to the actuation mechanism.
- a known actuating mechanism of this type consists of an essentially circular cylindrical pin 8 which on the one hand forms the push button 21 and on the other hand rests with its end face 22 on the mine and interacts with it.
- the pin 8, facing the lead, has an axial area 9 with a larger diameter than the other axial areas 10, 11 of the pin.
- the pin 8 In the axial region 10, which adjoins the region 9, the pin 8 has on its surface surface elongated ribs 13, 14 which run parallel to the axis 16 of the pin 8. At least two, but mostly four or more such ribs 13, 14 are provided.
- the ribs 13, which adjoin the region 9, preferably extend radially up to the radius of the axial region 9.
- the ribs 14 preferably have a smaller radial height.
- the ribs 13, 14 have the same extent in the circumferential direction (thickness). Two ribs are assigned to each other, are referred to as a pair of ribs and have the following geometric arrangement:
- a tip-side rib 13 is arranged on the pin 8 over a predetermined axial length, starting from the axial section 9, the other, push-button-side rib 14 has, seen in the axial direction, a distance h to the tip-side rib 13, so that in the axial In the direction between the mutually facing ends of the two ribs, an unribbed area of the outer surface of the pin remains.
- the two ribs are offset in the circumferential direction so that one flank 23 of one rib 13 is aligned with the other flank 24 of the other rib 14, so that, seen in the axial direction, the two ribs 13, 14 come to lie directly next to one another.
- flank foot If the flanks of the ribs do not extend in radial planes, this relation relates to the flank foot. Are several such associated with each other Rib pairs are provided, so they are evenly distributed over the circumference and all offset in the same direction.
- the pin 8 cooperates with a ring 12, which has the following features: its inner diameter D corresponds to the outer diameter d of the pin so that it can slide and rotate quickly along the pin. It has axially extending grooves 25 on its inner circumferential surface, which allow it to be pushed quickly over the ribs 13, 14 of the pin 8 in the axial direction.
- the number of grooves 25 is selected so that the mode of operation explained below is fulfilled, e.g. four grooves 25 are provided with two pairs of ribs 13, 14.
- the ring is provided with saw teeth 17, 18 on each of its two end faces. The sawing of both teeth points in the same direction.
- the axial extent, height H, of the ring from tooth tip to tooth tip is greater than the axial distance h between the mutually facing ends of mutually associated ribs 13, 14, and the axial extent from tooth base to tooth base is less than h.
- the ring 12 can be rotated in the rib-free region of the pin 8 when it is exposed to a reciprocating axial movement of the pin and the tooth tips of the saw toothing 17 dodge or have to dodge the facing rib ends 13, 14.
- Two pairs of ribs are preferably provided, the extent of each rib in the circumferential direction is 22.5 °, the number of saw teeth is then eight, the number of grooves is four.
- the ring 12 In the assembled state of the ballpoint pen, the ring 12 is in a suitably designed part 12 'of a through opening 2 of the housing 1 with the aid of a clamping part 20 (Fig. 5) mounted so that it is substantially immobile in the axial and radial directions, but can rotate about its axis 16 ', which coincides with the ballpoint pen axis 16''and the pen axis 16 at least substantially.
- the through opening 2 has an area 3 with a reduced diameter on the side facing away from the clamping part 20.
- the pin 8 is inserted into the ring 12 so that the ring is located essentially at the location of the pin 8, which lies axially between the ribs 13, 14, and further the axial section 9 of the pin 8, which has a larger diameter than the other pin sections, lies in an area 4 of the through opening 2 of the housing part 1, the area 3 of which is adjacent.
- the diameters are adjusted so that the pin 8 can move axially and in the circumferential direction in the area 4, but that it cannot pass through the area 3 of the through opening.
- a spring acts on the end face 22 of the pin by means of the lead 21 and presses it backwards in the axial direction.
- the tip-side ribs 13 of the pin can be inserted into the grooves 25 of the ring 12, whereby the pin is pushed backwards by the lead (rest position), or the ribs 13 become in the tooth base held between two teeth of the sawtooth 17, whereby the writing tip of the lead protrudes from the housing.
- FIG. 5 the rear part of a ballpoint pen according to the invention is shown in its rest position.
- the lead 21 presses the pin 8 backwards until its shoulder 29 (FIG. 2) lies against the ring 12 and thus prevents any further movement in this direction.
- the ribs 13 of the pin 8 are inserted into the grooves of the ring 12 in the rest position shown, so that only the outer, non-grooved area of the wall thickness of the ring 12 can be seen in FIG. 5.
- the end face 22 of the pin 8 would be close to the section 3 and the ribs 14 of the pin would be inserted into the grooves 25 of the ring 12, the push button 21 protrudes only a little way from the housing part 1.
- the spring pushes it backwards by means of the lead, the toothing on the button side releasing the ribs 14 on the button side and the tip-side ribs 13 again coming into the area of the tip-side toothing. Due to the rotation of the ring, the tip-side ribs 13 are now one tooth wider than in the initial state and thus reach the area of a groove 25 of the ring, so that the pin 8 can be pushed further under the action of the spring than was the case in the starting position: the lead moves into its retracted position, as shown in FIG. 5 .
- the game is repeated exactly as described above, with the first difference that the axial movement of the pin is longer until the teeth on the push button side meet the ribs 14 on the push button side than before and with the second difference that in the end position the tip-side ribs 13 are offset from the grooves 25, so that the pin 8 and the lead are held in their front position, whereby the first-mentioned, ready-to-write, starting position is reached again.
- the aim of the invention is to avoid these disadvantages and to provide an actuating mechanism which can be assembled without problems.
- the pushbutton-side ends of the pushbutton-side ribs 14 with inclined run-up surfaces 15, so that these ends of these Ridges rise in a ramp-like manner from the surface of the surface of the pin 8.
- this makes it possible to slide the ring 12 over the ribs 14 irrespective of the position of its grooves 25, the ring being briefly elastically expanded until it reaches the area between the ribs 13, 14 (area h, FIG. 2) reached.
- the ring is made of suitable engineering plastic (for example, Delrin 500 [a product of EIdu Pont de Nemours and Co., Inc., USA], Celcon [a product of Celanese Corporation, USA], polyamide , Nylon 6.6 [a product of Akzo nv, the Netherlands]).
- suitable engineering plastic for example, Delrin 500 [a product of EIdu Pont de Nemours and Co., Inc., USA], Celcon [a product of Celanese Corporation, USA], polyamide , Nylon 6.6 [a product of Akzo nv, the Netherlands]).
- the saw teeth 17, 18 are made only over an inner partial area of the wall thickness of the ring 12 and the outer partial area of the wall thickness on both end faces of the ring with a flat end face 19, perpendicular to the axis 16 '(FIG. 3) of the ring 12, which is preferably in the plane of the tooth tips or protrudes very slightly, for example by 0.05 mm.
- This measure makes it possible to use a shaping tool with a flat ring surface to apply the ring 12 to the pin 8 and thus reliably avoid any damage to the sawtooth.
- this configuration has the completely unpredictable advantage of being able to design the ballpoint pen housing in the area of the actuation mechanism more cheaply than before: in many types of ballpoint pen that use the actuation mechanism described, there is a division of the housing in the area of this mechanism, the two parts using a Thread 6 are interconnected.
- the actuating mechanism is located in the push-button part of the housing 1, while the tip-side housing part receives the lead 21 and the spring.
- the through opening 2 in this area 4b with a larger diameter than before and instead of the shoulder or shoulder axially extending, thin supports 7 from the to let the inner circumferential surface of the through opening protrude inward, the push-button-side end faces 26 forming the seat for the ring.
- supports 7 are preferably provided, but it can also be more or less.
- an area 4a which, as previously in the prior art, has an inner diameter which forms a guide for the section 9 of the pin 8.
- the inner surfaces 30 of the supports 7 therefore preferably coincide with the continuation of the lateral surface of the section 4a.
- This design of this housing part which is possible only because of the flat end faces 19 of the ring 12, not only saves material, which is significant because of the enormously large quantities, but also simplifies the production of the housing parts, the cycle times of the injection molding tool are significantly increased, and the likelihood of rejects is reduced.
- the latter is based on the fact that, thanks to these supports 7, the wall thickness of the housing 1 could be reduced in the region 4b, and thus material accumulations which lead to problems with cooling and hardening with regard to dimensional accuracy in injection molded parts, which occur again and again even under precisely maintained and strictly prescribed production conditions were avoided.
- the invention is not limited to the exemplary embodiment described, but can be modified in various ways. It is thus possible to provide three or four such pairs instead of two opposite pairs of ribs, but the embodiment described is preferred for only two pairs of ribs because of the elastic deformation of the ring which is easier to bear. Should three or four pairs be provided, the number of grooves and teeth of the ring should be increased accordingly.
- the bevel of the pushbutton-side ends of the pushbutton-side ribs in the exemplary embodiment shown is 13.5 ° with respect to the pin axis 16, but can other angles can also be used, whereby only the forces occurring during the assembly of the ring must be taken into account and kept tolerable for the ring.
- the mutually facing ends 31, 32 of the ribs 13, 14 are tapered in a V-shape according to a development of the invention in order to achieve a better interaction with the tooth bases of the respective saw toothing 17, 18 of the ring 12. Since the sawtooth of the ring, when its end faces are rotated by 180 ° during assembly, points in the other direction, a symmetrical design of these rib ends 13, 14 is necessary in order to create the same conditions in both positions for receiving the writing pressure. This eliminates the need to orient the rings 12 during assembly.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES96890046T ES2167535T3 (es) | 1996-03-12 | 1996-03-12 | Boligrafo retractil. |
AT96890046T ATE208291T1 (de) | 1996-03-12 | 1996-03-12 | Druckkugelschreiber |
PT96890046T PT795423E (pt) | 1996-03-12 | 1996-03-12 | Esferografica rectractil |
EP96890046A EP0795423B1 (fr) | 1996-03-12 | 1996-03-12 | Stylo à bille actionné par pression |
DE59608140T DE59608140D1 (de) | 1996-03-12 | 1996-03-12 | Druckkugelschreiber |
US08/814,867 US5997204A (en) | 1996-03-12 | 1997-03-11 | Retractable ball-point pen |
BR9701270A BR9701270A (pt) | 1996-03-12 | 1997-03-12 | Caneta de ponta esférica retrátil |
MXPA/A/1997/001879A MXPA97001879A (en) | 1996-03-12 | 1997-03-12 | Retracta ball point feather |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96890046A EP0795423B1 (fr) | 1996-03-12 | 1996-03-12 | Stylo à bille actionné par pression |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0795423A1 true EP0795423A1 (fr) | 1997-09-17 |
EP0795423B1 EP0795423B1 (fr) | 2001-11-07 |
Family
ID=8226194
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96890046A Expired - Lifetime EP0795423B1 (fr) | 1996-03-12 | 1996-03-12 | Stylo à bille actionné par pression |
Country Status (7)
Country | Link |
---|---|
US (1) | US5997204A (fr) |
EP (1) | EP0795423B1 (fr) |
AT (1) | ATE208291T1 (fr) |
BR (1) | BR9701270A (fr) |
DE (1) | DE59608140D1 (fr) |
ES (1) | ES2167535T3 (fr) |
PT (1) | PT795423E (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008004859A1 (fr) * | 2006-07-03 | 2008-01-10 | Alfred Kramp | Dispositif de préhension d'un disque compact |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3828732B2 (ja) * | 2000-09-05 | 2006-10-04 | 株式会社壽 | ノック式液体容器 |
US8739853B2 (en) | 2001-03-22 | 2014-06-03 | Ren Judkins | Cordless blind and operator device |
US6644372B2 (en) * | 2001-03-22 | 2003-11-11 | Ren Judkins | Cordless blind |
NL1022597C2 (nl) * | 2003-02-05 | 2004-08-06 | Photobiochem N V | Toepassing van een fotosensitizerverbinding voor de bereiding van een farmaceutisch preparaat, werkwijze voor het bereiden van een farmaceutisch preparaat en een werkwijze voor het behandelen van een zoogdier. |
US7360812B2 (en) * | 2004-03-27 | 2008-04-22 | Anton Vasile Ionescu | Automatic device, equipment and methods for handling objects |
WO2007040491A1 (fr) * | 2005-09-26 | 2007-04-12 | Anton Vasile Ionescu | Procédés et appareil de manipulation automatique d’objet |
US7950862B2 (en) | 2006-05-26 | 2011-05-31 | Youngtack Shim | Multicolor writing tools and methods |
JP2024519026A (ja) | 2021-05-17 | 2024-05-08 | アプライド・メディカル・テクノロジー・インコーポレーテッド | 磁石支援型縫合糸把持器 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1195456A (fr) * | 1958-04-28 | 1959-11-17 | Poussoir perfectionné pour instrument à écrire rétractable | |
FR1431346A (fr) * | 1965-04-01 | 1966-03-11 | Stylographe, plus spécialement à bille | |
GB1169489A (en) * | 1967-02-04 | 1969-11-05 | Helmut Bross | Control Mechanism, in Particular for Writing Implements. |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE312462C (fr) * | ||||
DE291815C (fr) * | ||||
US1332378A (en) * | 1919-05-09 | 1920-03-02 | Accessories Mfg Company | Electric switch |
US3064624A (en) * | 1955-12-30 | 1962-11-20 | Radiant Pen Corp | Writing device |
DE1108589B (de) * | 1956-07-19 | 1961-06-08 | Hans Christmann | Druckmechanik fuer Kugelschreiber |
DE1248508B (de) * | 1962-08-16 | 1967-08-24 | Helmut Bross Dipl Ing | Schaltmechanik fuer Kugelschreiber |
GB1039057A (en) * | 1964-04-04 | 1966-08-17 | Georg Linz | Writing implement with retractable point |
DE1894602U (de) * | 1964-04-04 | 1964-06-11 | Georg Linz | Schaltmechanik fuer schreibgeraete, insbesondere kugelschreiber. |
US3792931A (en) * | 1972-02-11 | 1974-02-19 | K C Pen Co Inc | Writing instrument |
US4991988A (en) * | 1989-04-18 | 1991-02-12 | Bic Corporation | Component writing instrument having retractable cartridge |
-
1996
- 1996-03-12 DE DE59608140T patent/DE59608140D1/de not_active Expired - Fee Related
- 1996-03-12 AT AT96890046T patent/ATE208291T1/de not_active IP Right Cessation
- 1996-03-12 ES ES96890046T patent/ES2167535T3/es not_active Expired - Lifetime
- 1996-03-12 PT PT96890046T patent/PT795423E/pt unknown
- 1996-03-12 EP EP96890046A patent/EP0795423B1/fr not_active Expired - Lifetime
-
1997
- 1997-03-11 US US08/814,867 patent/US5997204A/en not_active Expired - Fee Related
- 1997-03-12 BR BR9701270A patent/BR9701270A/pt not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1195456A (fr) * | 1958-04-28 | 1959-11-17 | Poussoir perfectionné pour instrument à écrire rétractable | |
FR1431346A (fr) * | 1965-04-01 | 1966-03-11 | Stylographe, plus spécialement à bille | |
GB1169489A (en) * | 1967-02-04 | 1969-11-05 | Helmut Bross | Control Mechanism, in Particular for Writing Implements. |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008004859A1 (fr) * | 2006-07-03 | 2008-01-10 | Alfred Kramp | Dispositif de préhension d'un disque compact |
US8128336B2 (en) | 2006-07-03 | 2012-03-06 | Microservice Tecnologia Digital da Amazonia LTDA | Device for gripping a compact disc |
Also Published As
Publication number | Publication date |
---|---|
EP0795423B1 (fr) | 2001-11-07 |
DE59608140D1 (de) | 2001-12-13 |
MX9701879A (es) | 1998-07-31 |
ATE208291T1 (de) | 2001-11-15 |
US5997204A (en) | 1999-12-07 |
BR9701270A (pt) | 1998-11-10 |
ES2167535T3 (es) | 2002-05-16 |
PT795423E (pt) | 2002-04-29 |
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