WO1985002149A1 - Instrument a ecrire - Google Patents

Instrument a ecrire Download PDF

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Publication number
WO1985002149A1
WO1985002149A1 PCT/EP1984/000361 EP8400361W WO8502149A1 WO 1985002149 A1 WO1985002149 A1 WO 1985002149A1 EP 8400361 W EP8400361 W EP 8400361W WO 8502149 A1 WO8502149 A1 WO 8502149A1
Authority
WO
WIPO (PCT)
Prior art keywords
writing
sleeve
segments
implement according
tip
Prior art date
Application number
PCT/EP1984/000361
Other languages
German (de)
English (en)
Inventor
Götz-Ulrich Wittek
Original Assignee
Bauer, Rolf
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
Priority claimed from DE19833341759 external-priority patent/DE3341759A1/de
Priority claimed from DE19843438074 external-priority patent/DE3438074A1/de
Application filed by Bauer, Rolf filed Critical Bauer, Rolf
Priority to JP59504383A priority Critical patent/JPH0655557B2/ja
Publication of WO1985002149A1 publication Critical patent/WO1985002149A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K5/00—Pens with ink reservoirs in holders, e.g. fountain-pens
    • B43K5/16—Pens with ink reservoirs in holders, e.g. fountain-pens with retractable nibs
    • B43K5/17—Pens with ink reservoirs in holders, e.g. fountain-pens with retractable nibs with closing means
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K7/00—Ball-point pens
    • B43K7/12—Ball-point pens with retractable ball points
    • 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
    • B43K8/02—Pens with writing-points other than nibs or balls with writing-points comprising fibres, felt, or similar porous or capillary material
    • B43K8/028—Movable closure or gate
    • 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
    • B43K8/24—Pens with writing-points other than nibs or balls characterised by the means for retracting writing-points

Definitions

  • the invention relates to a writing instrument with a sleeve-shaped housing and a writing element arranged in this housing, which can be displaced between a ready-to-write position which releases the tip section of the writing element for writing and a storage position retracted into the housing, the housing section adjacent to the tip section of the writing element There are segments which are radially spread apart in the readiness to write position and which lie against each other in the storage position and close the tip end of the housing.
  • Such a writing instrument is e.g. Known from DE-OS 27 52 304.
  • the segments which are intended to close the tip of the writing instrument housing in the storage position of the writing element are formed in one piece with the housing of the writing instrument.
  • the closing pressure of the segments is caused by the elasticity of the material of the housing when these segments are spread out against the elastic resistance of the housing material by a corresponding shoulder on the writing element during the transition from the storage position to the readiness to write.
  • the shoulder on the writing element releases the segments again, so that they only move radially inward due to their elasticity.
  • the purpose of this known arrangement is to protect the tip of the writing element or drawing element when it is not being used.
  • This known writing instrument has the considerable disadvantage that that although the writing tip can be protected against mechanical damage when it is not used, it is not possible to allow the segments to lie so close together in the storage position that they could hermetically seal the housing on the tip side in order to effectively prevent the writing tip of the writing element from drying out to be able to. Furthermore, in the known writing instrument, due to the fact that only the material elasticity can ensure the closing pressure, the closing ability of the tip compartment of the device will deteriorate over time due to material fatigue.
  • the invention is therefore based on the object of providing a writing instrument of the type described at the outset which, with a relatively simple design and handling, can effectively prevent writing elements or their writing tips, such as e.g. Felt-tip pens, ink pens, fountain pens, capillary pens, ink or drawing brushes or similar devices can dry out in the storage position of the writing utensil.
  • writing elements or their writing tips such as e.g. Felt-tip pens, ink pens, fountain pens, capillary pens, ink or drawing brushes or similar devices can dry out in the storage position of the writing utensil.
  • the housing consists of an outer sleeve and an inner sleeve which is arranged essentially within the outer sleeve and can be displaced in the axial direction to a limited extent, in that the segments forming the closure part of the housing are mounted on the inner sleeve and are partially outside the outer sleeve, that the segments are radially outward under tension, that the part of the closure part lying outside the outer sleeve has a larger outer diameter than the inside diameter of the tip-side end of the outer sleeve, which tapers towards the inside of the housing to the diameter of the inner sleeve, so that the inner sleeve is preloaded towards the storage position by a spring supported on the outer sleeve, the spring pressure being influenced by the interaction kung between the tapered part of the closure part un the tip-side opening of the outer sleeve in a radial closing pressure the segments
  • the closing pressure of the closure part or the segments of the closure part is not guaranteed by the material elasticity, but rather by spring pressure which can be selected according to the requirements and which is implemented by the interaction between the closure tip and the housing of the writing instrument in the closing pressure.
  • spring pressure which can be selected according to the requirements and which is implemented by the interaction between the closure tip and the housing of the writing instrument in the closing pressure.
  • projections for limiting the axial movement of the writing element can be provided on the writing instrument when it is brought into the ready-to-write position or the storage position by its own weight, said projections cooperating with inner beads on the intermediate sleeve in order to be able to fix the writing element in the ready-to-write position.
  • These projections can advantageously be arranged on a separate functional sleeve which can be pushed onto the front part of the writing element and which may remain in the housing when the writing element is changed.
  • the housing with an extension which engages over the closure part in the storage position and thus protects against mechanical damage.
  • the above-described object is advantageously achieved in that the spring that biases the writing element against the housing is supported on the inner sleeve, that the switching mechanism acts on the outer sleeve, that the restoring force of the writing element against the inner sleeve biasing spring is smaller than the spring that biases the inner sleeve gsgen the outer sleeve, and that the inner sleeve against the outer sleeve is in readiness for writing by interaction between the segments and writing element on the one hand and the outer sleeve on the other.
  • each of the known switching mechanisms can be used to move the intermediate sleeve and the writing element from the storage position to the ready-to-write position and to fix it there.
  • the writing element is advantageously provided with a plurality of control projections which cooperate with the switching mechanism in order to fix the writing element in the readiness for writing position independently of the intermediate sleeve.
  • the switching mechanism can advantageously consist of a separate switching ring which is arranged to be longitudinally displaceable between the intermediate sleeve and the outer sleeve and interacts with guide grooves which are provided on the inner surface of the outer sleeve and with switching teeth which are provided on the actuating element.
  • the actuating element is advantageously provided with recesses in which the end edge of the intermediate sleeve can be received for stabilization.
  • the switching mechanism can act on the inner sleeve of the housing, in which case the restoring force of the spring that biases the writing element against the inner sleeve is greater than that of the spring that biases the inner sleeve against the outer sleeve.
  • the springs are then advantageously dimensioned such that when the actuating element is actuated, the pressure on the two springs first affects only the spring supporting the intermediate sleeve against the housing, so that until the closure part has opened sufficiently, the writing element does not relative to the intermediate sleeve can be moved.
  • This securing can be additionally supported by projections provided on the inside of the segments of the closure part which engage in a corresponding shoulder of the writing element, so that the latter cannot be displaced axially relative to the intermediate sleeve until the closure element has opened sufficiently.
  • the spring travel of the spring supporting the intermediate sleeve against the housing can be limited by a corresponding geometric dimensioning of the spring or by a retaining projection on the intermediate sleeve, which limits the axial displacement of the intermediate sleeve and thus the spring travel.
  • the intermediate sleeve can be designed as a short half-sleeve, which advantageously has a flange at the rearward end, on which the spring biasing the intermediate sleeve against the writing element is advantageously supported by means of slidable rings.
  • a further sleeve which is coaxial with it and which is biased against the intermediate sleeve instead of the writing element can advantageously be arranged in the intermediate sleeve.
  • This intermediate sleeve can advantageously be retained against the spring pressure by means of suitable retaining projections or beads in the intermediate sleeve.
  • a fountain pen system can advantageously be arranged in this intermediate sleeve.
  • the intermediate sleeve can in this case be open at its rear end and the cartridge or the writing element can be provided with a gripping attachment for pulling out.
  • their abutting edges can advantageously be provided with a seal and / or can be profiled to complement one another.
  • sealing bead segments can advantageously be arranged on the segments on the side facing the writing element, which in the storage position lie against one another and against the writing element, and thus form the tip of the writing element with the abutting segment edges Form the surrounding, hermetically sealed chamber.
  • the individual segments are manufactured separately and are stored and held in an intermediate ring which is detachably attached to the intermediate sleeve.
  • This ring can advantageously consist of elastic material, in which the segments are mounted obliquely outwards to the axial direction of the intermediate ring, so that the elasticity of the intermediate ring supports the radial prestressing of the grafts.
  • a sealing ring (23 ') or coating (71) can also be arranged at a point opposite the segments in the storage position, against which the inner surfaces of the segments come to rest and so that the sealing ring adopts the tip section of the writing element (2). form a surrounding, hermetically sealed chamber (S).
  • the design of the lead tip with a sealing ring or a sealing coating has the advantage that the inside of the segment can be designed without sealing bead elements, which makes their manufacture considerably easier.
  • this configuration according to the invention ensures that a fresh seal for the chamber surrounding the tip section of the writing element is also supplied with each refill change.
  • the sealing ring has the advantage that it can serve as a feed protection of the writing element in the storage position.
  • a particularly simple embodiment of the writing instrument according to the invention provides that the inner surface regions of the segments are designed to be complementary to the shape of the tip section of the writing element and, in the storage position, can come into sealing contact with the tip of the lead itself.
  • the provision of any sealing beads has become superfluous, which further simplifies the manufacture of the writing instrument.
  • the inner surface of the segments can be made rubber-elastic, or can be provided with a rubber-elastic coating. In the same way, the surface of the lead tip in the contact area can also be made rubber-elastic.
  • a particularly advantageous embodiment of the writing element according to the invention for fountain pens is characterized in that the inner sleeve (74) is formed in part-shell and in that the segment tip (8 ') is formed in one piece as a part-shell closure part, which is connected to the inner part via an elastically biased transition part Sleeve is connected.
  • the partial-shell design of the closure part has the advantage that it can be adapted as best as possible to the contours of a fountain pen tip.
  • the one-piece design of the closure part is considerably easier to manufacture.
  • the inner sleeve can advantageously be formed in one piece with the segment tip, as a result of which only one manufacturing step is necessary.
  • a sealing bead element can be arranged in the closure part, which comes to bear sealingly against the tip portion of the writing element in the storage position.
  • This sealing bead segment can in turn be formed in one piece with the closure part.
  • edges of the individual segments can advantageously be connected to one another by thin-walled, elastic segment connections which are folded inwards in the storage position. This has the advantage that, firstly, seals no longer have to be applied to the segment edges and, secondly, that absolute tightness to the side is ensured.
  • a writing instrument of the type mentioned at the outset can be further improved in that the inner sleeve consists of two interconnected cylinders of different diameters, one spring being arranged outside the thinner cylinder and the other spring being arranged inside the thicker cylinder.
  • This embodiment has the considerable advantage that the radial dimensions of the writing instrument, in particular the outer housing of the writing instrument, can be chosen to be smaller, as a result of which the entire writing instrument becomes slimmer and thus more visually appealing.
  • the outer sleeve (1) is open to the rear and the inner sleeve (7) protrudes rearward from the outer sleeve (1) in the storage position.
  • the rear part of the inner sleeve which is connected to the front part via a screw thread, can be unscrewed for a lead change without the outer sleeve having to be screwed on beforehand. This significantly simplifies mine replacement.
  • the locking effect of the segments of the writing device according to the invention can be improved in that the outer surface che of the closure part tapers in two stages of different inclination to the longitudinal axis to the rear, the part of the weaker inclination facing the tip part.
  • the two-stage locking process according to the invention ensures a two-stage locking process.
  • the free edge of the tip-side end of the outer envelope first comes into contact with the strongly inclined outer surface area of the closure part. This ensures that the writing element is first completely moved into the inner sleeve before the radial locking movement then begins very quickly when the strong inclination is reached.
  • the weaker inclination of the outer surface of the closing part in the second closing stage results in a greater closing pressure of the segments against one another. This further improves the sealing effect of the segment elements according to the invention.
  • the writing device according to the invention especially the closure mechanism according to the invention, is to be used for capillary recorders, it is advantageously designed such that a sealing surface for the tip and the spiral outlet is arranged on the inside of the segment tip, and that the actuating element acts on the inner sleeve and after a pronounced axial displacement of the inner sleeve comes into contact with and acts on the writing element and moves it axially.
  • the provision of the sealing surface for the tip and the spiral outlet ensures that no ink or the like can escape from the capillary and the spiral outlet in the storage position of the writing device.
  • the configuration of the actuating element according to the invention ensures that simple operation by means of a printing mechanism is achieved even in a pen-and-ink recorder, for example.
  • the fact that the actuating element acts on the inner sleeve before it comes into contact with the writing element ensures that the capillary tip and the spiral exit are released from the sealing surface before the radial opening movement of the segment tip to which the sealing surface is attached starts. This effectively prevents displacement of the capillary tip.
  • This configuration of the writing instrument according to the invention for the first time creates a India ink or capillary pen chem without any cap that could be lost, an absolute tightness of the pen is guaranteed.
  • Fig. 1 shows a longitudinal section through an embodiment of the
  • FIG. 1a shows a longitudinal section through the writing instrument of FIG. 1 in the writing position
  • FIG. 3 shows a longitudinal section through a further embodiment of the writing device in the closed position
  • FIG. 3a shows a longitudinal section through the writing instrument of FIG. 3 in the writing position
  • FIG. 4 shows a cross section through the writing instrument according to FIG. 3a
  • FIG. 5 shows a longitudinal section through the rear part of the intermediate sleeve (7) according to FIG. 3,
  • FIG. 6 is a partially broken longitudinal section through the front part of the actuating element (and tensioning and switching element) (11) of FIG. 3,
  • FIG. 8 shows a longitudinal section through another embodiment of the writing instrument in the rest position
  • FIG. 8a shows a longitudinal section through the writing instrument of FIG. 8 in the writing position
  • FIG. 9 shows a cross section through the tip section of the writing instrument according to FIG. 8,
  • FIG. 10 shows a cross section through the tip section of the writing instrument according to FIG. 8a
  • Fig. 11 is a rolled-up inside view of the guide grooves (51) of the Switching mechanism of Fig. 8,
  • FIG. 12 is a front view of the tip part of the writing instrument of FIG. 8,
  • FIG. 13 is a front view of the tip part of the writing instrument of FIG. 8a
  • FIG. 14a shows a longitudinal section through the writing instrument of FIG. 14 in the writing position
  • FIG. 15 is a front view of FIG. 15d, f, g,
  • FIG. 17 is a front view of FIG. 15e, h,
  • FIGS. 15a, b, c shows a front view according to FIGS. 15a, b, c,
  • FIG. 19 shows a partial cross section through an embodiment to explain the hermetic chamber (segment chamber) in the tip of the device
  • FIG. 20 shows a schematic view of the sealing lines of the hermetic segment chamber corresponding to FIG. 19,
  • FIGS. 19 and 20 are partially broken (as well as cut) perspective front view of the tip of the writing instrument (with a cut, hermetic segment chamber), according to FIGS. 19 and 20,
  • 22a-l a model of the functional sequences and thrust movements of the exemplary embodiments according to the figures: 2, 7-7c, 8 and 8a, 14 and 14a, 23 and 23a,
  • FIG. 27 shows a partially broken open segment (34) from the closure part (8) of the writing instrument of FIG. 23,
  • FIG. 30 shows a partial longitudinal section through a further embodiment of the writing instrument
  • FIG. 31 shows a longitudinal section through the closure cable of a further embodiment of the writing apparatus
  • 32a is a front view of the tip part of FIG. 5 in the open state
  • the exemplary embodiment of the writing instrument shown in FIG. 1 has a sleeve-shaped, preferably two-part housing 1 and 31, and an intermediate sleeve 7 arranged therein, which at its end facing the writing tip has a hermetically sealable closure part 8 and on it is provided at the rear end with an actuating element 15, and finally a writing element 2 located in the writing instrument with a liquid writing medium which is generally at risk of evaporation.
  • the scrubbing element 2 is, for example, a felt pen lead.
  • the hermetically sealable closure part 8 consists of at least two, but preferably three to ten, radially outwardly preloaded, expandable and made of elastic material bending segments 34, which extend from the outside into the sleeve-shaped housing 1 and here, at the end facing the tip of the closure part 8, are firmly connected.
  • the closure part 8 is mounted on the intermediate sleeve 7 via a screw, bayonet or similar connection 42. This is in turn biased by means of a radial projection 35 via a compression spring 9, which is supported on a shoulder 37 of the housing 1, in the opposite direction to the writing tip, as a result of which the attached, partly external, closure part 8 is drawn towards the interior of the housing.
  • the closure part 8 has a larger outside diameter in relation to the inside diameter of the housing opening 44, which tapers towards a smaller outside diameter in the direction of the inside of the housing, the individual bending segments 34 on this bevel of the opening 44 , at the same time, equally strong and equally compressed radially inward against their bending preload.
  • the axial pressure acting on the intermediate sleeve 7 or on the closure part 8 through the compression spring 9 and which is deflected radially inwards by the action of the housing opening 44 on the closure part 8 must be greater than the sum of the radially outward pressure acting on it of all bending segments 34 of the closure part 8.
  • the bending segments 34 of the closure part 8 are seated in a seamless segment cap, which is used for writing and is used for writing tip 25 of the writing element 2, as is shown in more detail in further representations (for example, FIG. 21, Ed. 12, Fig. 9) together, which in turn, for example, to increase the gas density with a sealing element a lateral, elastic sealing material covering 22 (in FIG. 21) can be provided.
  • the axially compressed bending segments 34 are connected to sealing bead segments 23, which also lie seamlessly against one another, which seal tightly behind the tip 26 of the writing element 2 on a tip section 4 of the writing element 2 and thus the writing element tip 26, which is at risk of drying out, also to the interior of the housing 1, or the Seal the intermediate sleeve 7 gas-tight.
  • the modes of operation of the closure part 8, which produces the hermetic sealing chamber 6, or of the bending segments 34 and the sealing bead segments 23 connected therewith, and of the intermediate sleeve 7 can, as far as i. exclusively with regard to the production of the gas-tight closed position of the writing instrument, regardless of other possible functions, in principle for all execution farms of the writing instrument as analog.
  • the sealing bead segments 23 in the closed position, also have the function of securing the writing element 2 against wobbling or slipping within the writing instrument and thus preventing damage to the writing element tip 26.
  • the actuating element 15 connected to the intermediate sleeve 7 is depressed and the writing instrument is held with the tip downward. Due to the drop in pressure of the housing opening 44 on the tip part 5 of the closure part 8, the bending segments spread apart
  • the falling out of the writing element 2 being limited by the impact of a stop 16 of the functional sleeve 43 on a radial projection of the segment part 38.
  • the writing element 2 comes out far enough from the housing 1 and 31 of the intermediate sleeve 7 to the previously closed in the hermetic sealing chamber 6 writing to expose the element tip 26, as well as any air supply slots 39 at the tip section 4 of the writing element 2, which ensures the flow of writing medium.
  • the bending segments 34 are pressed radially inwards again, the major part of the radial pressure now acting via the pressure shoulder 49 on the functional sleeve 43, which is related to the fact that the bending segments 34 and the writing element 2 are shaped so that the portion of the writing element 2, which comes to lie immediately parallel to the pressure shoulders 49 of the bending segments 34 after its limited emergence, together with the functional sleeve 43 has a larger outer diameter than the inner diameter of the closure part 8 in the area of the pressure shoulders 49, while relative to that, directly in the area of Pressure shoulder 49 lying section of the writing element 2 has a smaller diameter before it emerges.
  • a smaller part of the radial pressure can also act on the tip section 4 of the writing element via the segment tips 48.
  • the axial writing pressure acting in the longitudinal direction of the writing instrument against the writing element tip 26 is absorbed by a functional sleeve projection 47 against a lateral contact surface 45 of the pressure shoulder 49 of the bending segment 34, thereby preventing the writing element 2 from slipping or wobbling along the side during writing, while the laterally acting part of the writing pressure is stabilized by the radial pressure of the pressure shoulder 49 on the functional sleeve 43, and by the tight guidance of the end of the writing element 2 in the actuating element 15 and the lateral guidance of the functional sleeve 43 against the projection 38 and the stop 16 against the intermediate sleeve 7.
  • the intermediate sleeve 7 is in turn in the rear part of the Ge housing 31 closely guided and can still be stabilized radially there with a resilient element.
  • the actuating element 15 In order to finally bring the writing instrument back into the closed position, the actuating element 15 must be pressed again and the tip of the writing instrument must point upwards, the inherent weight-related falling of the writing element 2 into the writing instrument preferably being intercepted by the actuating element 15.
  • the tip section 4 of the writing element 2 is shaped such that no writing medium is released from the writing element tip 25 to the sealing bead segments 23 during pulling out, which can also be prevented, if necessary, by a slight depression of the intermediate sleeve 7 and corresponding radial separation of the sealing bead segments 23 .
  • Another possibility b) of changing the writing element is obtained by removing the closure part 8 (for example unscrewing) and then pulling together with the writing element 2 out of the sleeve 1/31 and the intermediate sleeve 7, after which the bending segments 34 and the sealing beads 23 are already radial stand apart and the lead 2 can be pulled in the manner described above from the functional sleeve 43, which is held by the projection 47 and the projection 38 of the closure part 8 in the closure part.
  • a further possibility c) of changing the writing element is obtained in another embodiment, not shown, in which the functional sleeve 43 is an integral part of the writing element 2, the radial projection 47 being shaped such that when the writing element 2 is pulled out of the closure part 8 the projection 38 of the closure part 8 without white teres can happen.
  • the functional sleeve 43 is an integral part of the writing element 2, the radial projection 47 being shaped such that when the writing element 2 is pulled out of the closure part 8 the projection 38 of the closure part 8 without white teres can happen.
  • a further variation d) of the writing element change finally results when the writing element 2 and the actuating element 15 are shaped relative to one another in such a way that the writing element 2 extends so far into the actuating element 15 that after removal of the actuating element 15 it is already far enough out of the rear housing half 31 protrudes to provide enough surface for the rear pulling out of the writing element 2 without additional removal of the rear housing half 31 is required.
  • the further exemplary embodiment of the writing instrument shown in FIGS. 3 to 6 has a preferably two-part housing 1 and 31, as well as an intermediate sleeve 7, which is provided with a hermetically closable closure part 8 at its end facing the writing tip and which at its rear end in FIG an actuating and switching element 11 is clamped, and finally a writing element 2 located therein with a liquid writing medium which is generally at risk of evaporation.
  • the writing element 2 is, for example, a felt pen lead.
  • the functions of the hermetic closure part 8 or the bending segments 34 and the sealing bead segments 23, the spring 9 and the intermediate sleeve 7 of the writing instrument are the hermetic closure of the writing rubbers ment tip 26 in the sealing chamber 6 and only for this purpose essentially to the functions of the corresponding elements of the embodiment of Fig. 1 / 1a analog.
  • the specific differences between the present exemplary embodiment and the exemplary embodiment shown in FIGS. 1 / 1a arise with regard to the more general functions when the writing instrument is started up.
  • the rear part of the housing 31 (FIGS. 3, 3a and 4) is provided on its inner wall with guide grooves 51 for a switching mechanism 3, which are only shown schematically.
  • the rear part of the intermediate sleeve 7 is preferably provided with three longitudinal recesses 12 which extend to the end of the intermediate sleeve 7 and thus the rear part of the intermediate sleeve 7 into three rigid slats of the same size 40 divide.
  • These intermediate sleeve lamellae 40 as shown in FIGS. 3, 3a and 6, are fixed in corresponding clamping recesses 55 of the actuating element 11. The tensioning effect can be further stabilized by alternately corresponding grooves, grooves etc. on the intermediate sleeve lamellae 40 and in the tensioning recesses 55.
  • a preferably three-part control attachment 14 is preferably attached to the end part of the writing element 2 facing away from the writing tip 26, which extends through the rear recesses 12 of the intermediate sleeve 7 in such a way that the longitudinal displaceability of the writing element 2 is limited preserved.
  • the writing element 2 is preloaded by means of the control lug 14 by an only weakly acting further spring 10 arranged between the writing element 2 and the intermediate sleeve 7 against a further, preferably inside radial projection 46 against the intermediate sleeve 7.
  • the start-up of the writing instrument is similar to that of a ballpoint pen, by pressing the actuating element 11 only once.
  • the actuating element 11 (FIG. 3) moves the intermediate sleeve 7 anchored therein against the pressure of the spring 9, as a result of which the bending segments move 34 of the associated closure part 8 spread radially outward, and parallel to it the writing element 2, on which the low thrust pressure required is exerted by the switching teeth 50 of the actuating element 11 via the switching ring 13 on the control shoulder 14 of the writing element 2.
  • the actuating element 11 is now pressed into the housing part 31 until the switching ring 13 arrives at the level of the switching point 59 of the switching guide grooves and by means of the switching teeth 50 of the actuating element 11 into the grooves, which are only up to the detent position " outside "58 run, jumps.
  • the intermediate sleeve 7, as well as the gsgen dei intermediate sleeve 7, are again pressed in the direction of the rear housing part via the spring 10-supported writing element 2.
  • the writing element 2 is supported in this backward movement from the point of the latching position "outside" 58 in the switching ring 13 (Fig. 4) supported against the housing, while the intermediate sleeve 7 moves further under the pressure of the spring 9, finally moving pull the radially spread bending segments 34 of the closure part 8 back so far behind the tip 26 of the supported writing element 2 that this is released for the writing process.
  • the intermediate sleeve 7 moves towards the back until the bending segments 34 are pressed radially inwards again on their bevel, which tapers towards the interior of the housing.
  • the writing element 2 and the bending segments 34 are closed shaped that the writing element 2 has a larger outer diameter in relation to its tip section 4 and in the readiness for writing position the part with the larger outer diameter moves so far forward that only the pressure shoulders 49 of the bending segments 34 press onto the writing element 2, so that the segment tips 48 do not rest, so that sealing materials (not shown here, which are possibly attached to the bending segments 34, but not shown here (cf., for example, FIGS. 12, 13, 16, 18)) are not used by any contact pressure which may damage them.
  • a further axial displacement of the intermediate sleeve 7 in the direction of the actuating element 11 is thus prevented here by the clamping action of the bending-up segments 34 between the writing element 2 and the housing opening 44.
  • the housing part 31 is first removed (FIG. 3).
  • the guide grooves 51 of the switching mechanism 3 have no limits towards the housing end part 31, so that the switching, clamping and actuating element 11 guided therein can be pulled back from the intermediate sleeve plates 40 and pulled out of the guide grooves 51.
  • the sealing bead segments 23 are now lifted a little out of the sealing grooves 56 at the tip section 4 of the writing element 2, whereupon the writing element 2, which is under a slight prestress of the spring 10, together with the switching ring 13 behind it, pops out a bit from the writing instrument and finally can be exchanged.
  • All other, now following exemplary embodiments of the writing device according to FIGS. 7, 8, 14, 2 and 23 have the functions required for the purpose of getting ready to write or closing, such as holding, supporting, opening and closing functions of the closing part 8 on the one hand, and to coordinate functions of stepping out, snapping in or out, supporting or pulling in the writing element 2, an automatic control mechanism which functions according to the sequence of movements shown in FIG. 22.
  • the above-mentioned exemplary embodiments can therefore be regarded as the same with regard to the function of their commissioning or closing, which is why after the treatment of the next exemplary embodiment in FIGS. 7 to 7c only the specific differences of the following exemplary embodiments are dealt with.
  • the further exemplary embodiment of the writing instrument shown in FIGS. 7-7c has a preferably two-part housing 1 and 31, as well as a two-part intermediate sleeve 7 and 60 located therein, which has a hermetically closable closure at its end facing the writing tip part 8 is connected. Furthermore, a writing element 2 is located in the writing instrument, which is located essentially within the intermediate sleeve 7 (or 60) and the closing part 8 bs during the closed state (FIG. 7).
  • a liquid, evaporation-prone writing medium in the writing element 2 and the tip 26 of the writing element 2 which is at risk of drying out, is caused by the interaction of the intermediate sleeve 7, the spring 9, the housing 1, the closure part 8, and the sealing bead segments 23 and the housing opening 44 hermetically sealed in the same way as has already been stated for the corresponding parts in the first embodiment of the writing instrument according to FIG. 1 and applies to all exemplary embodiments of the writing instrument.
  • the closure part 8 To put the writing instrument into operation, the closure part 8 must be opened on the inside of a pressure actuation that is to be carried out only once, without the writing element 2 moving relative thereto, since premature advance could damage the nibs 26, and on the other hand the writing element 2 via a switching mechanism located in the writing instrument 3 are brought into the readiness to write position. For this purpose, it is necessary to keep the closure part 8, which is constantly under lock (pre) tension, open until the feed, switching and latching process with which the writing element 2 is brought into the ready-to-write position is completed, which is why the writing instrument is closed with a provided for this purpose.
  • the spring 10 has a stronger compressive force than the spring 9, so that the writing element 2 stronger against the intermediate sleeve 7/50 device actuating element 11) is preloaded as the intermediate sleeve 7/60 against the housing 1 (likewise in the direction of the actuating element 11), while on the other hand the preloading pressure on the writing element 2 from the actuating element 11 against the intermediate sleeve part 60, and the intermediate sleeve preload from the closure part 8 against the Housing opening 44 is intercepted.
  • the intermediate sleeve 7 furthermore has a limiting projection 52, as a result of which its axial displacement is restricted to the relatively short distance between the limiting projection 52 and a further housing shoulder 41. Furthermore, there are guide grooves 51 for a switching mechanism 3 on the inner wall of the rear intermediate sleeve part 60, which also include the switching ring 13 and the switching teeth 50 of the actuating element 11. (Instead of the locking mechanism 3 or 51, 50 and 13 shown, other, correspondingly suitable locking mechanisms can also be used.)
  • the actuating element 11 is depressed.
  • the “model of the functional sequences and pushing movements” in FIG. 22a-1 is also used to carry out the movement sequences that then come into motion.
  • both the writing element 2 and, in parallel, the intermediate sleeve 7/60 move axially in the direction of the housing opening 44 ( Fig. 7 after Fig. 7a).
  • the writing element 2 initially remains stationary relative to the intermediate sleeve 7/60, since pressure from the writing element 2 via the strong spring 10 on the intermediate sleeve 7 acts almost completely on the weaker spring 9, on which the intermediate sleeve 7 in turn is supported against the housing 1 , is passed on.
  • the limiting projection 52 of the intermediate sleeve 7 strikes the housing shoulder 41 (FIG.
  • the switching ring 13 in the rear intermediate sleeve part 60 which is part of the switching mechanism 3, pushes up to a switching point 59, and on the other hand the tip section 4 of the writing element 2 pushes through the open tip section 5 of the locking part 8 until the tip 26 of the writing element 2 dis FIG. 7b only occupies the position shown in broken lines, which corresponds to the position c in FIG. 22.
  • the writing element 2 pushes itself again in the direction of the actuating element 11 due to the spring pressure of the spring 10 until the switching ring 13 is locked in the latching position "outside" 58 and thus ends the rear thrust of the writing element 2 and supports it (Fig 7b and 22d). Even during this backward movement of the writing element 2, the closure part 8 remains open continuously, since the pressure transmission of the spring 10 to the spring 9 continues to be maintained.
  • the exemplary embodiment of the writing instrument according to FIGS. 7 to 7c is thus brought into the ready-to-write position by pressing once to be carried out, it runs through the phases shown in FIGS. 22a-e.
  • the point in time of the actuating pressure acting is identified here in the phases Fig. 22a-c and the decreasing or terminated actuating pressure by the phases Fig. 22c-e.
  • the maximum feed of the closure part 8 (or the intermediate sleeve 7/60) is determined by line 1, the maxima le advance of the writing element 2 to the switchover point 59
  • the writing element 2 (FIG. 7c) is supported by the switching ring 13 in relation to the axially acting writing pressure.
  • the radially acting writing pressure is absorbed by the guide pin 35 against the switching mechanism 3, the radial projections 17 and 38 against the intermediate sleeve 7 and the writing element 2, and by the inward radial pressure of the segment tips 48 of the bending segments 34.
  • the writing element 2 and the bending segments 34 can be shaped to one another in the same way as in the exemplary embodiment according to FIGS. 3 and 3a, so that not the segment tips 48 but mainly certain segment shoulders 49 rest during writing.
  • either the closure part 8 or the rear sleeve parts 31 and 60 can be removed.
  • FIGS. 8 to 13 Another embodiment of the writing instrument according to FIGS. 8 to 13 has a preferably two-part housing 1 and 31 and a short intermediate sleeve 7 located in the front housing part 1, on the end of which facing the writing tip a hermetically sealable closure part 8 is mounted.
  • a writing element 2 which is guided axially in an actuating element 15 (without an additional switching function) via a guide pin 35 fastened to its rear end.
  • the sequence of the functions and pushing movements which occur when this writing instrument is started up corresponds to the functional sequence according to FIG. 22 of the exemplary embodiment in FIGS. 7-7c.
  • the type of hermetic closure of the writing element tip 26 corresponds to the closure method in the previous exemplary embodiments of the writing instrument.
  • Specific features of the present embodiment of the writing instrument (Fig. 8-13) can be found in the arrangement and type of the switching mechanism 3, the writing element 2, as well as its resilient spring 10, the bending segments 34, and the simplified type of writing element replacement.
  • the switching mechanism 3 of the writing instrument consists only of certain (switching) guide grooves 51 (FIG.
  • the writing element 2 Against an end flange 18, which is preloaded by an intermediate sleeve 7 by a spring 9, the writing element 2 is supported by a somewhat enlarged radial projection 17 with a stronger spring 10 located behind the intermediate sleeve 7. Since the guide grooves 51 of the switching mechanism 3 (FIG. 11) for the switching guide connecting piece 61 (only one of four was shown for reasons of clarity) of the writing element 2 are axially ⁇ open '' in the direction of the actuating element 11 and the spring 10 via the writing element 2 and that Actuating element 11 is supported on the rear housing part 31 (Fig. 8a), in this embodiment, the preload of the writing element 2 by the spring 2 by the spring 10 in the closed state must be very low, or close to zero pond, otherwise the closure part 8 is constantly would be pressed against the pressure of the spring 9.
  • the switching guide connection piece 61 (FIG. 11), which is formed in one piece with the writing element 2, is capable of all without an additional switching element due to its double beveling in connection with the correspondingly bevelled end faces of the webs of the switching mechanism 3 delimiting the guide grooves 51 when the writing element 2 is actuated by pressure perform necessary switching functions.
  • the position of only one shift guide connector 61 (out of four) is in the latching position “inside” 57 (corresponding to FIG. 8, FIG. 22a), in the switching point 59 (corresponding to FIG. 22c) and in the latching position “outside” 58 (corresponding to Fig. 8a, Fig. 22e).
  • FIG. 9 shows how, in the case of the preferably three bending segments 34 of the closure part 8, the gas density of the segment edges can be increased with a lateral, elastic sealing material coating 22.
  • a hermetic surface forms behind the writing element tip 26, which, with the tips 48 of the bending segments 34 (FIG. 12) joining one another in front of the writing element tip 26, provides the complete hermetic closure of the Make the writing element tip 26.
  • the change of the writing element 2 is done by pulling it backwards out of the writing instrument after removing the rear housing part 31 against the low resistance of the sealing bead segments 23.
  • the writing element tip 26 is designed in such a way that it cannot deliver any writing material to the sealing bead segments 23 during this process, e.g. by having a slightly smaller maximum outer diameter than the tip section 4 (seen in Fig. 13).
  • FIGS. 14 and 14a Another embodiment of the writing instrument shown in FIGS. 14 and 14a, which is likewise put into operation according to FIGS. 22 a-e and deactivated according to FIG. 22e-i, is preferably a fountain pen which, for example, can also be designed as a piston fountain pen or tube or capillary pen.
  • the writing instrument consists of a preferably two-part housing 1 and 31, as well as a generally one-piece intermediate sleeve 7 at the end of the writing side of which a hermetic closure part 8 is attached.
  • a filler element 28 normally remaining in the writing instrument with a cartridge receiving sleeve 63 and a tip-side writing spring 27.
  • a special switching cartridge 65 which is provided with writing means and which is fixed in the filler element 28 and the cartridge receiving sleeve 63 for writing purposes, is arranged in the writing instrument.
  • the switching cartridge 65 which is held at its rear end via a guide 62 in a switching ring 13 and the switching and actuating element 11, is designed such that it withstands the actuation pressure required for switching purposes without deformation.
  • the Guide grooves 51 of the switching mechanism 3 are designed to be 'open' to the rear.
  • the switching cartridge 65 can then be pulled out of its fixation on the filler element 28 by means of a handle 64 attached to its guide 62, as a result of which the switching ring 13 can also be pulled through the guide grooves 51 which are open towards the rear (which therefore do not have a latching position "inside” 57 in the actual sense , but have a "not engaged inner layer” 57) is pulled out. Since the prestressing pressure of the eder 10 acts on the filler element 28 when the writing instrument (Fig.
  • the spring 10 and also the filler element 28 are axially supported in the locked position "outside" 58 during the writing state (FIG. 14a), which enables the radial support of the filler element 28 by the segment tips 48 of the bending segments 34.
  • the sealing bead segments 23 are held on the bending segments 34 in the writing instrument via snap-in profile strips 24 and engage accordingly during the closed state (FIG. 14) molded sealing grooves 56 on the tip portion 4 of the filler element 28.
  • the snap-in profile strips 24 are shaped such that, in the closed state of the writing instrument, they also engage in the sealing grooves 56 in addition to the sealing bead segments 23 or in other grooves additionally worked into the filler element 28, e.g. to safely intercept the pressure of a cartridge that snaps into the fixation (apart from the strong compression spring 10), provided that this cartridge pressure is counteracted by pressing on the closure part 8 from the outside.
  • locking profile strips 24 of the bending segments 34 are shaped in such a way that they only release themselves from their anchoring in the filler element 28 when the push-button is put into operation when the bending segments 34 radially outward due to their material-related have directed bias preloaded far enough to release the anchorage and to allow the filler element 28 and the nib 27 to emerge freely.
  • profile strips designed in this way thus provide additional security that the filler element 28 and the usually expensive and sensitive pen nib 27 do not appear prematurely (for example when the pressure is actuated extremely quickly or a Functional failure of the spring 10) move against the still closed closure part 8 and can thereby be damaged, and at the same time for the fact that, for example sealing bead segments 23 made of particularly soft, elastic material, with similar loads, not by sliding sealing grooves 56 or the like. to be damaged.
  • the present writing device designed according to FIG. 2 firstly offers the possibility of changing the writing elements most easily when using very simply designed writing elements (except for the guide pin 35 provided with a handle). Since the sealing bead segments 23 do not engage directly on the writing element 2, the writing element 2 is already pulled out on the handle of the guide pin 35 without further precautions after the rear housing part 31 and the actuating element 11 have been removed. In addition, in the manufacture of such a writing instrument, it is possible to fit the sealing bead segments 23 and the sealing grooves 56 at the front end of the tip section sleeve 19 particularly precisely, since the sleeve remains in the writing instrument, whereby the hermetic chamber 6 can possibly be sealed even more tightly.
  • FIGS. 15a-h each show cross sections through two bending segments 34 of different embodiments of the closure part 8 (with four bending segments 34 preferred), different combinations of the profiling of the segment edges 21 and the use of sealing material coatings 22 being shown.
  • the segment edge profiles can e.g. 15a, b, c and e, in the case of double-sided approximately according to FIGS. 15d, f, g and without a coating according to FIG. 15h.
  • FIG. 16 The front view of a closed closure part 8 supported on the housing 1 with sealing material coatings 22 attached to the segment edges 21 on two sides is shown in FIG. 16, with segment edges 21 provided with sealing material on one side this is shown in FIG. 18 (except for a segment edge profiling according to FIG. 15e). Without a segment edge covering (as in Fig. 15e, for example), the closed closure part usually appears as in Fig. 17
  • the closure elements of an embodiment of the writing instrument are shown in detail in FIGS. 19 to 21.
  • the present closure part 8 belongs to an embodiment of the writing instrument, which is also equipped with a control mechanism that controls the start-up or reclosure according to the functional sequence shown in FIG. 22.
  • the closure part 8 is preloaded by a spring 9 which is weaker in relation to the spring 10 of the writing element 2 (apart from the material-dependent, radially outward preloading of its bending segments 34). If the overall required actuation pressure, which also has to overcome the pressure of the stronger spring 10, should not become too high, a somewhat lower, radially inwardly directed closing pressure of the housing opening 44 is connected against the bending segments 34. Therefore, it is advisable to run the writing device with such a control mechanism in general.
  • FIG. 21 how the (in this case preferably four) individual bending segments 34 are supported against one another seamlessly up to the segment tip 48 and in the process together with their sealing bead segments 23, which are equally seamless against one another and at the same time at the tip section 4 create the writing element 2, form the hermetic sealing chamber 6 around the writing element tip 26, which is at risk of drying out.
  • the writing element tip 26 is shaped in such a way that it has a slightly smaller maximum outer diameter than the tip section 4 of the writing element 2 (which is naturally the easiest to carry out, for example, with capillary pens), so that the writing element 2 can be pulled out backwards for replacement without its tip 26 dispenses writing means to the sealing bead segments 23 and without the closure part 8 having to be stopped by the pressure on the intermediate sleeve 7.
  • the seal shown in FIG. 21, produced by the individual bending segments 34 and acting in all directions, is obtained primarily from the sealing line 68 shown in FIG. 20 the hermetic segment chamber 6 (in connection with the tip section 4 of the writing element 2) around the writing element tip 26 clearly.
  • the elastic sealing material covering 22 shown in FIG. 21, which additionally seals the segment edges 21, preferably extends only shortly before the area where the bending segments 34 touch the housing opening 44 in the closed state (FIG. 21), in order to make sliding contact between the elastic material to avoid the bending segments 34 and the housing opening 44 during opening of the closure part 8.
  • this can also be achieved by segment edge profiling and a sealing material covering according to FIG. 15e.
  • the front view of the housing 1 or of the closed closure part 8 can also have other shapes, such as polygons on the degree or arc side and the like.
  • the sealing bead segments 23 are designed so that they are both as e.g. in ig. 19 behind the writing element tip 26 on the tip section 4, as well as in front of the tip 26, so that the sealing bead segments 23 alone create a hermetic chamber 6 around the writing element tip 25 and thus also on a lateral sealing material coating 22 even in the case of writing materials which are at high risk of evaporation can be dispensed with for the bending segments 34.
  • closure part 8 which can be used in writing elements 2 with writing means which are only very slightly prone to drying out, the sealing bead segments 23 sealing towards the interior of the housing are completely omitted and the lateral sealing material coatings 22 of the segment edges 21 (preferably according to Fig. 15e developed) continued to the rear end of the bending segments 34 or also omitted.
  • shape of the functionally constant closure part 8 is designed without a tip part 5 or flat on the tip side.
  • the bending segments 34 thus extend directly radially towards the housing axis after the maximum outer diameter of the closed closure part 8 lying outside the housing opening 44, the hermetic sealing chamber 6 and the writing element tip 26 located therein correspondingly having to be accommodated deeper within the housing 1.
  • Such a design of the closure part 8 has the advantage that the only tapering Segmentspit zen 48 even with a strong frontal impact of the writing instrument or other Schlagetc. Loads are relatively well protected.
  • FIGS. 23, 23a and 25 to 27 show a further preferred embodiment of the writing instrument, which relates in particular to the design of the closure elements.
  • control mechanism controlling this closure design can be applied to all embodiments of the writing instrument.
  • the present writing instrument initially has a housing extension 29 which can be fastened to the tip-side end of the housing part 1 by means of a bayonet, screw-plug, etc. connection.
  • the housing extension 29 makes it possible to also protect the tip region 5 of the closure part 8, which generally forms the hermetic segment chamber 6, and in particular also the (possibly shock-sensitive) segment tips 48 against impacts, impacts, etc.
  • the hermetic segment chamber 6, which is formed by the bending segments 34, is sunk and protected in the writing instrument during the closure state (FIGS. 23 and 25).
  • the bending segments 34 are here in the closed state (FIGS. 23 and 25) supported on a clamping shoulder 30, in the readiness to write state (FIGS. 23a and 26) through the opening of the housing extension 29.
  • the bending segments 34 of the writing instrument (FIG. 25, 26, 27) covered with a sealing material 22 are shaped in such a way that the segment tips formed from sealing material 22 are not zen 48 in the ready-to-write state (Fig. 26) press on the tip section 4, but in the bending segments integrated pressure shoulders 49, whereby a possibly caused by the contact pressure, permanent or short-term deformation of the elastic segment tips 48 is avoided.
  • the tip section 4 of the writing element 2 is also provided with a radial sealing projection 69 which, in the stored state (FIG. 23), engages in corresponding depressions in the sealing bead segments 23 (FIG. 27).
  • FIG. 24 shows a last exemplary embodiment of a bending segment 34, which is in a state that is not influenced by springs, housing openings, etc. and is only bent due to the material.
  • the bending segment 34 is worked individually and is held in an intermediate ring 66 by means of a snap-in projection 67 and firmly clamped.
  • This embodiment makes it possible to facilitate certain operations, which may be necessary in the production of bending segments 34 of a corresponding closure part 8, such as working out the locking profile strips 24 of the pressure shoulders 49 etc. or fastening the sealing bead segments 23, since a single bending segment 34 is more directly accessible for such work.
  • the embodiment of the writing device shown in FIGS. 28-28c preferably has a one-piece, sleeve-shaped housing 1, as well as a preferably two-part intermediate sleeve 7 'and 7''arranged therein, the front part 7' of which at its end facing the writing tip has a hermetically sealable closure part 8 and at its rear end via a screw etc.
  • Connection 70 is connected to the rear intermediate sleeve part 7 ′′, which has a larger diameter than 7 ′.
  • the closure part 8 can also be connected in one piece to the front intermediate sleeve part 7 ', wherein the resulting overall part can consist, for example, of two half-shells which are welded to one another.
  • a writing element 2 in the writing instrument which is essentially inside the intermediate sleeve 7 ′ and 7 ′′, and the closure part 8 during the closure state (FIG. 28), and the writing tip 26 thereof within the hermetic chamber 6 in the closure part 8 can be closed gas-tight. Furthermore, the switching mechanism 3 or the actuating element 11 can act on the rear end of this writing element 2.
  • Fig. 28-28c is essentially the same in its functions as the embodiment in Fig. 7-7c, but it represents an essential and fundamental improvement of that embodiment of the writing instrument in terms of manufacturing costs and practical use.
  • FIGS. 28-28c The advantages of the exemplary embodiment of the writing instrument shown here in FIGS. 28-28c are, first of all, the substantially simplified and less expensive sealing to the interior of the housing. As in the exemplary embodiment according to FIGS. 7-7c, this is achieved by the interaction of the bending segments 34 with the appropriately adapted tip section 4 of the writing element 2, but here the complicated and playful attachment of the individual sealing bead segments 23 to the bending segments 34.
  • the individual sealing bead segments 23 are joined to form a sealing bead ring 23 'and fastened exactly at the location of the writing element tip section 4, where, in the exemplary embodiment (FIGS. 7-7c) of the earlier application, during the closed state (FIG. 7) the bending segments 34 are guided onto the tip section 4 of the writing element 2.
  • This preferably elastic sealing bead ring 23 ' is shaped in such a way that it remains when the closure part 8 is closed fills a peripheral gap between the bending segments 34 and the writing element tip section 4 in a completely sealing manner, just as was previously achieved by the sealing bead segments 23.
  • a smallest possible, completely hermetic chamber 6 is created at a distance excluding the capillary forces around the writing tip 26, in which the air supply slots 39 of the writing fluid system (not shown) of the writing element 2 (not shown) that preferably emerge outside can be accommodated.
  • such a sealing bead ring 23 'can serve as an additional safeguard against the premature advance of the writing element 2, as is already known from the earlier application, since the writing element 2 can only emerge from the closure part 8 after the bending-up segments 34 have been fully bent open, which means that a Damage to the writing tip 26, for example in the event of a possible failure of the thrust transfer from the compression spring 10 to the compression spring 9, is reliably avoided.
  • the bending segments 34 on the inside can also be made densely elastic, i.e. they are e.g. provided with a sealing material coating 22 and for this purpose the sealing bead ring 23 'can be made inelastic.
  • both the sealing bead ring 23 'and the inner side of the bending segments 34 can also be designed to be densely elastic or, in the opposite case, both non-densely elastic and only well matched to one another.
  • sealing bead ring 23 ' to the writing element tip section 4 generally requires. significantly less effort than is necessary to attach the individual sealing bead segments 23 to the bending segments 34.
  • a sealing bead ring 23 'compared to sealing bead segments 23 offers the possibility of reducing the sealing surface, provided that the number of bending segments 34 is greater than 2, that is to say from seven segments.
  • Another significant advantage of the present exemplary embodiment is that the intermediate sleeve 7 'and 7' 'here to a certain extent with a "kink", i.e. a change in diameter is formed, as a result of which the two compression springs 9 and 10 required for the switching-pushing etc. coordination are accommodated in a space-saving manner which makes it possible to either make the writing element 2 substantially more voluminous, as shown here (FIG. 28- 28c) or the writing instrument as a whole is essential, namely in order to produce a spring wire thickness x 2 thinner and thus easier to handle.
  • This also eliminates the additional radial projections 36 and 38 from the earlier application, which result here (FIGS. 28-28c) through the front end 82 of the intermediate sleeve part 7 ′′ and through the rear end 83 of the intermediate sleeve part 7 ′.
  • a fourth vir part of the present embodiment to be mentioned lies in the likewise simplified line change compared to the previous exemplary embodiments (FIGS. 7-7c, FIG. 14, FIG. 2). Due to the open design of the sleeve-shaped housing 1 and connected by the rearward protrusion of a part of the rear intermediate sleeve 7 ′′, it is possible to screw it on directly, without prior, partial removal of the housing 1 or certain parts of the switching mechanism 3. Here, the prestressing pressure of the spring 10 pushes the writing element 2 somewhat backwards and thereby out of possible anchoring within the closure part 8 and can now be moved out with the rear intermediate sleeve part 7 ′′ and replaced without problems.
  • FIG. 29 now shows a further, particularly advantageously designed embodiment of the writing instrument, which essentially also has the same sealing and switching functions as the embodiment of FIGS. 7-7c.
  • the specifically designed writing element 2 makes it possible here to produce the locking part 8 in a much simpler and more cost-effective manner, and also to reduce the overall diameter of the writing instrument by a further one.
  • the tip section 4 of the writing element 2 has been lengthened in a white, which makes it possible for the thickened main part of the writing element 2 to no longer during the entire switching or advancing process of the writing element 2 triggered by simply depressing the actuating element 11 to get to the closure part 8.
  • Such a small closure part 8 initially requires less effort for its production, since on the one hand it uses less material and on the other hand it can be equipped with fewer bending segments 34, since with the decrease in the diameter of the pipe divided lengthways (for example in quarters) the lay-on elasticity of its pipe segments usually increases.
  • both the spring 9 (or the resilient element 9) provided for generating the closing pressure can ultimately be smaller, as well as the further spring 10, which is stronger relative to it and which, apart from its function for the switching mechanism 3, also the other spring 9 must control or set in a limited movement, the pressure drop between these springs 9 and 10 ultimately remaining, but moving at a lower level.
  • the smaller springs 9 and 10 which are possible in this exemplary embodiment thus require less space and the spring 9 can be accommodated in a peripheral intermediate space which remains around the smaller closure part 8.
  • the stronger, further spring 10 in turn, can be accommodated in another peripheral space which arises around the extended tip section 4 of the writing element 2, which extends into the intermediate sleeve 7.
  • a further advantage of this exemplary embodiment according to FIG. 29 lies in the further improvement and simplification of the sealing of the writing tip 26, as well as any air supply slots 39, towards the rear towards the interior of the intermediate sleeve 7. Since the bending segments 34 of that reduced closure part 8 already lie very close behind the tip section 4 of the writing element 2 behind the writing tip 26, it is only necessary for the rearward sealing to seal the very small peripheral space between the writing element tip section 4 and the bending segments 34, which in this case is sealed unlike in Fig. 28 already by an elastic, very thin and annular sealing material coating 71 around the tip section 4 of the writing element 2.
  • a last improvement to be mentioned of the present exemplary embodiment is that the successive movement of the individual switching etc. movements, as shown in FIGS. 22a-i, is based on two securing facts. is supported, whereby a premature advance of the writing element 2 or its tip section 4 is avoided by the sealing material coating ring 71 attached to it, which keeps the writing element 2 immovable when the closure part 8 is closed.
  • the closure part 8 closes before the writing element 2 is completely retracted into the intermediate sleeve 7 and closure part 8, except by the pressure transfer which is still active the spring 10 on the spring 9, additionally prevented by an additional bevel 72 which is located in the region of the outside of the closure part 8 coming into contact with the housing opening 44 during opening / closing.
  • This additional bevel 72 causes the closure part 8 to rest against the housing opening 44 with a large angle (closer to 90 from the axis) when it is drawn in, which initially makes the closing process more difficult.
  • the small-angled normal bevel now causes the opening of the bending segments 34 to accelerate at the housing opening 44 due to the increased deflection of the pressure of the spring 9 into a radially inward closing pressure until the closure part 8 also extends completely into the writing instrument and finally at the clamping shoulder 30 of the Housing 1 comes to rest, the writing tip 26 now rests gas-tight in the hermetic chamber 6 within the closure part 8.
  • the very small closure part 8 thus also enables a construction which realizes the complete retraction of the closure 8 into the writing instrument, as is already provided in FIGS. 23 / 23a, in the smallest possible space, here in FIG. 29 the housing extension 29 in one piece is formed with the housing 1.
  • the lead is changed in principle as in the embodiment shown in FIG. 28, with the rear intermediate sleeve closure 60 being correspondingly removed instead of the rear intermediate sleeve part 7 ′′.
  • FIG. 30 In a further exemplary embodiment of the writing instrument (FIG. 30), which also works according to the switching principle of FIG. 22, the closure is achieved in a likewise simplified, but greatly modified manner.
  • the writing instrument consists of a sleeve-shaped housing 1 which is beveled towards the writing tip 26. Furthermore, there is a half-shell closure part 8 ', which is preferably equipped with only 1-3 bending segments 34, which are under pre-tension pointing away from the tip section 4' of the writing element 2, and which at its rear end is preferably made in one piece with a part-shell (e.g. half-shell) imphülsentsil 74 or a functionally identical shift linkage or the like is connected.
  • the bending segments 34 are in turn provided in one piece with protrusions 73 which seal backwards and which, under certain circumstances. provided with a sealing material coating 22, which can take over the function of a sealing bead segment 23.
  • the tip portion 4' is laterally offset so that it can easily move from the obliquely closed tip area of the housing 1, after the lateral spreading of the bending segments 34 into the ready-to-write position.
  • the hermetic sealing of the writing tip 26 is achieved here by firstly the edge region of the bending segments 34 of the e.g. half-shell connection part 8 'strikes a sealing section 75 of the housing 1 and thus effects the outside closure.
  • the rear seal is achieved here, on the one hand, by the sealing projections 73 on the bending segments 34 on a sealing section 76, which is located on the writing element tip section 4 ', while the other, remaining part of the rear seal is attached by a, in the sleeve-shaped housing 1 , semicircular projection 77 is reached.
  • Such a writing instrument in which the bending segments 34, or part-shell closure part 8 ', rear sealing projection 73 on the bending segments 34, and a part-shell intermediate sleeve 74, can consist of a single part. are produced in an even more cost-effective manner, such as the exemplary embodiments according to FIG. 28 or 29.
  • the present exemplary embodiment (FIG. 30) of the writing instrument can be used particularly advantageously for closing a filler element (not shown), since a e.g. half-shell opening of the closure tip, very accommodating to the usual shape of a fountain pen, thus minimizing the closure part 8 'for this purpose.
  • a final simplification is obtained here by replacing the previous compression springs 9 and 10 with any resilient elements 79 and 80 which have the same function and which control the switching and thrust coordination in the same way.
  • the attachment becomes approximately Iger sealing bead segments 23 simplified by a two-part and attachable design.
  • the closure part 8 is only made up to the contact surface 78, the otherwise difficult to access tip parts 34 'of the bending segments 34 can be manufactured individually and relatively easily with sealing bead segments 23 and the like. provided, and then attached to the corresponding segment stumps.
  • a further simplification is possible here, in that the sealing bead segments 23, like the sealing projections 73 from FIG. 30, are formed in one piece with the bending segments 34 and, if necessary, are provided with a sealing material coating 22 to maintain their complete sealing function.
  • the lateral sealing between the bending segments 34 is no longer achieved by applying sealing material 22 or by producing the bending segments 34 with a precise fit (see FIG. 17), but by between the Bending segments, very thin-walled segment connections 81 which are in the closed state (FIG. 32) either contract elastically or fold inwards and are then not visible from the outside.
  • the segment connections 81 stretch or fold, similar to an umbrella, to the extent required for the tip-side opening of the bending segments 34 of the closure part 84 to allow the writing element 2 to pass freely (FIG. 32a).
  • a closure part 84 can be produced with relatively little effort, for example by in the open state and in one piece with the segment connections 81, is produced from a suitable plastic by injection molding.
  • FIG. 33 Another embodiment of the writing instrument, which is shown in Fig. 33, is specially equipped for the closure of capillary or tube recorders.
  • the present exemplary embodiment generally consists of a two-part, sleeve-shaped housing 1 'and 31, as well as a rotationally asymmetrical capillary writing element 88 with ink cartridge 90, writing tube 86 and spiral outlet 89, which is equipped with a switching mechanism 3' (e.g. a heart curve circuit with switching ball) attached to the side.
  • a switching mechanism 3' e.g. a heart curve circuit with switching ball
  • a partial-shell (for example, third-shell) intermediate sleeve 92 in the writing instrument, on the writing-side end of which a partial-shell connecting part 8 ', which preferably consists of a single bending segment 95, is arranged and at the rear end of which there is an actuating projection 91 which is located over a Actuator 94, which extends outward from the rear part of the housing 31, can be operated.
  • a partial-shell connecting part 8 ' which preferably consists of a single bending segment 95
  • the capillary writing element 88 is closed in two ways via the bending segment 95 of the part-shell closure part 8 '.
  • a rubber-elastic sealing element 85 which is provided for the closure of the writing tube 86.
  • the bending segment 95 is provided with a (possibly partially rubber-elastic) sealing projection 87 which, when closed, comes to lie precisely over the exit of the ink coil 89.
  • the axial pressure of the resilient element 80 acting on the bending segment 95 is deflected radially inwards via the half-sided housing opening 44'.
  • the radial pressure deflection of the axial spring pressure has ended and the bending segment 95 is now moved exactly axially in the direction of the capillary writing element 88.
  • the sealing element 85 is axially against the tip-side opening of the Writing tube 86, and the sealing projection 87 pressed against the spiral exit 89, the bending segment 95 being additionally guided through the fixing shoulder 93 here.
  • the closure part 95 first slides axially in the writing direction.
  • the sealing element 85 detaches from the writing tube 86 without bending it, since the axially parallel sliding surface 96 initially prevents lateral displacement of the bending segment 95, while the capillary writing element 88 does not move, since this is caused by the pressure of the resilient element 79 (or the compression spring 9), which extends around a corresponding piece, is prevented.
  • the sealing projection 87 of the bending segment 95 also detaches from the spiral outlet 89.
  • the limiting projection 97 of the capillary writing element 88 is reached by the intermediate sleeve shoulder 98 after a short distance, which is sufficient to enable the opening of the writing tube 86 and the spiral outlet 89, whereby this is now pulled along.
  • the closure part 8 moves together with the capillary writing element 88 in the axial, disk-side direction, the tip part of the bending segment 95 pushing past the half-sided housing opening 44' out of the front housing part 1 'and thereby radially through it outward bias moved from the axial area to a laterally offset position.
  • This feed movement continues until the lateral switching mechanism 3 'of the capillary writing element 88 switches over. With this switching, the feed is terminated by the pressure actuation and the pressure decreases. With the decreasing actuation pressure, the capillary writing element 88 now engages externally by means of its switching mechanism 3 'in the advanced writing position.
  • the weaker resilient element 79 which is supported with its rear end against the externally latched capillary writing element 88, is pressed together by the stronger resilient element 80 via the intermediate sleeve shoulder 98.
  • the laterally bent bending segment 95 and its tip part are pulled sideways past the writing tube 86 and the tip of the capillary writing element 88, which is engaged on the outside, in the rearward direction, the complete writing tip of the capillary writing element 88 being completely exposed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Pens And Brushes (AREA)

Abstract

Un instrument à écrire se compose d'un boîtier (1) en forme de manchon, dans lequel se trouve un manchon intermédiaire (7) contenant un élément à écrire (2). A l'extrémité située à la pointe du manchon intermédiaire (7) se trouve une partie de fermeture hermétique (8) comportant plusieurs segments d'écartement (34) précontraints radialement vers l'extérieur, se trouvant les uns contre les autres sans joints dans leur zone de pointe (5) pendant la fermture (fig. 7) et dotés de segments de renflement d'étanchéité (23) qui se trouvent également les uns contre les autres sans joints derrière la pointe (26) de l'élément à écrire (2) et contre la section de pointe (4) de celui-ci, si bien que la pointe (26) de l'élément à écrire est enfermée dans une chambre d'étanchéité hermétique (6). L'instrument à écrire comporte un mécanisme permettant, lorsque l'on appuie sur l'élément d'actionnement (11), d'ouvrir la partie de fermeture (8) avant la sortie de l'élément à écrire (2), sans qu'elle soit touchée par la pointe (26) de l'élément à écrire. Cette coordination entre la partie de fermeture (8) et l'élément à écrire (2) peut être obtenue de diverses manières.
PCT/EP1984/000361 1983-11-18 1984-11-15 Instrument a ecrire WO1985002149A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59504383A JPH0655557B2 (ja) 1983-11-18 1984-11-15 筆記用具

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19833341759 DE3341759A1 (de) 1983-11-18 1983-11-18 Schreibgeraet
DEP3341759.8 1983-11-18
DE19843438074 DE3438074A1 (de) 1984-10-17 1984-10-17 Schreibgeraet
DEP3438074.4 1984-10-17

Publications (1)

Publication Number Publication Date
WO1985002149A1 true WO1985002149A1 (fr) 1985-05-23

Family

ID=25815721

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1984/000361 WO1985002149A1 (fr) 1983-11-18 1984-11-15 Instrument a ecrire

Country Status (4)

Country Link
EP (2) EP0163706A1 (fr)
JP (1) JPH0655557B2 (fr)
AU (1) AU3672784A (fr)
WO (1) WO1985002149A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4711592A (en) * 1986-06-06 1987-12-08 Gregory Allen R Capless retractable marking pen
WO1989000925A1 (fr) * 1987-07-27 1989-02-09 Rhoades Clark J Dispositif de fermeture pour applicateurs de liquide
US5915867A (en) * 1995-05-26 1999-06-29 Ancos Co., Ltd. Capless writing tool

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5022775A (en) * 1989-08-09 1991-06-11 Kabushiki Kaisha Sakura Kurepasu Writing inplement with magnetic closure
US20050074268A1 (en) * 2003-06-18 2005-04-07 Johann Beil Drawing or writing utensil and casing or protective sleeve
US7341388B2 (en) 2003-10-20 2008-03-11 Avery Dennison Corporation Retractable writing instruments with volatile inks
WO2005044586A2 (fr) * 2003-10-20 2005-05-19 Avery Dennison Corporation Instruments d'ecriture retractables a encres volatiles
US7488130B2 (en) * 2007-02-01 2009-02-10 Sanford, L.P. Seal assembly for retractable instrument

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE489806C (de) * 1928-03-06 1930-01-23 Kinzinger Fa D Fuellfederhalter
DE847117C (de) * 1947-04-04 1952-08-21 Walter Kessel S A Schreibgeraet
US3480370A (en) * 1968-01-18 1969-11-25 Penn Corp Writing instruments
FR2220353A1 (en) * 1973-03-07 1974-10-04 Marechal Lech Retractable instrument e.g. pen penknife - has nib withdrawing into automatically closing airtight compartment

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS456265Y1 (fr) * 1965-12-08 1970-03-28
JPS5553686A (en) * 1978-10-18 1980-04-19 Hitachi Metals Ltd Stirrer for vertical furnace
JPS572797A (en) * 1980-06-06 1982-01-08 Eiji Niihara Note

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE489806C (de) * 1928-03-06 1930-01-23 Kinzinger Fa D Fuellfederhalter
DE847117C (de) * 1947-04-04 1952-08-21 Walter Kessel S A Schreibgeraet
US3480370A (en) * 1968-01-18 1969-11-25 Penn Corp Writing instruments
FR2220353A1 (en) * 1973-03-07 1974-10-04 Marechal Lech Retractable instrument e.g. pen penknife - has nib withdrawing into automatically closing airtight compartment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4711592A (en) * 1986-06-06 1987-12-08 Gregory Allen R Capless retractable marking pen
WO1989000925A1 (fr) * 1987-07-27 1989-02-09 Rhoades Clark J Dispositif de fermeture pour applicateurs de liquide
US5915867A (en) * 1995-05-26 1999-06-29 Ancos Co., Ltd. Capless writing tool

Also Published As

Publication number Publication date
EP0149747B1 (fr) 1991-08-07
JPS61500421A (ja) 1986-03-13
AU3672784A (en) 1985-06-03
JPH0655557B2 (ja) 1994-07-27
EP0163706A1 (fr) 1985-12-11
EP0149747A1 (fr) 1985-07-31

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