Classifications

• • A—HUMAN NECESSITIES
  • A45—HAND OR TRAVELLING ARTICLES
  • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
  • A45D34/00—Containers or accessories specially adapted for handling liquid toiletry or cosmetic substances, e.g. perfumes
  • A45D34/04—Appliances specially adapted for applying liquid, e.g. using roller or ball
  • A45D34/042—Appliances specially adapted for applying liquid, e.g. using roller or ball using a brush or the like
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
  • B43K—IMPLEMENTS FOR WRITING OR DRAWING
  • B43K7/00—Ball-point pens
  • B43K7/02—Ink reservoirs; Ink cartridges
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
  • B43K—IMPLEMENTS FOR WRITING OR DRAWING
  • B43K7/00—Ball-point pens
  • B43K7/10—Arrangements for feeding ink to the 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
  • B43K8/03—Ink reservoirs; Ink cartridges
• • 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
  • B43K8/14—Pens with writing-points other than nibs or balls with coreless tubular writing-points
  • B43K8/146—Ink cartridges, ink reservoirs

Definitions

• the invention relates to a device for applying a liquid, in particular a writing or cosmetic pen.
• a device for applying a liquid in particular a writing or cosmetic pen.
• Such an application device known for example from DE 39 10 787 C1
• a container for holding a liquid is arranged in the pin shaft.
• a liquid guide system which on the one hand carries a writing tip and on the other hand is in contact with the interior of the liquid container.
• ventilation a transverse wall is drawn into the container in the known applicator, which is at least partially made of a semi-permeable, i.e. liquid-impermeable and material permeable to air and water vapor.
• a pressure compensation chamber adjoins this transverse wall on the shaft side and is divided by a transverse wall carrying lip valves.
• the object of the invention is to propose an applicator device which, with a simple construction, has a container which can be ventilated in the writing position and which largely uses the space provided by the pen sleeve.
• the ventilation opening then opens into the interior of the container and is closed by a semipermeable membrane.
• This design makes it possible to make better use of the interior of the pen shaft and thus to store a larger amount of liquid.
• an air chamber is present in the container, which is at the expense of the amount of liquid that can be stored. It has been shown that ventilation in the writing position is also possible without an auxiliary chamber filled with air and with lip valves arranged therein. Due to the lack of these design features, the manufacture of the applicator is also simplified.
• the application device is preferably ventilated with the writing tip held upward via at least one ventilation opening arranged at the front end of the container and likewise closed by a semipermeable membrane.
• the membranes are arranged on the outside or inside of the respective container wall having the ventilation opening, for example glued there.
• An embodiment that further simplifies production provides that the component having the ventilation opening is an injection molded part with a membrane cast therein. The entire container can thus already be provided with a membrane during its manufacture, so that there is no need to subsequently fix the membrane to the container.
• the liquid-guiding system comprises a tube with an essentially radially projecting flange, which forms the front end wall of the container.
• the tube, the flange and the container are preferably in one piece. This facilitates assembly on the one hand and prevents leaks between the flange and the container on the other.
• the peripheral wall of the container is formed by the pin shaft itself, which reduces the number of parts and thus the assembly effort.
• a separate container is arranged in the pin shaft.
• the ventilation of the container via a membrane arranged at its rear end is made possible by the fact that an air channel communicating with the membrane is present between the outside of the sleeve and the inside of the shaft.
• the air duct opens into a cavity connected to the atmosphere, which is arranged between the tube of the liquid control system and a substantially sleeve-shaped tip part that surrounds it with a radial spacing.
• the end wall area available for ventilation openings is small, since there is a hole here must be available through which the liquid control system can remove liquid from the container. It is particularly advantageous if at least one elongated ventilation opening extends from the tip-side end of the container to its shaft-side end. In this way, ventilation is ensured in practically every position of the pin, especially if there are several such elongated ventilation openings distributed over the circumference of the container. The same effect as with several elongated ventilation openings can be achieved if one ventilation opening extends helically over the circumference of the container. In this case, as well as in the case of several rectilinear elongated ventilation openings, ventilation of the container interior is also possible in any rotational position - with reference to the longitudinal axis of the applicator as the axis of rotation.
• an insert constricting it is arranged in the tube interior of the liquid device. Due to the narrowing of the cross-section, liquid channels extending in the axial direction can be produced which are considerably larger than the capillaries of a fiber or sintered material and which therefore exert a lower capillary pressure on the liquid.
• the high capillary pressure of conventional materials means that applicators with free liquid reservoirs run the risk of liquid dripping from the writing tip held down. This is prevented with the proposed design of the liquid control system. If the writing tip is held upwards, the pressure in the container due to heating can be reduced via a liquid channel and an air channel existing between the writing tip and the inner wall of the tube. Conversely, air can enter the container in the same way. A membrane-sealed ventilation opening in the front container area can therefore be dispensed with.
• FIG. 1 shows a longitudinal section through a first embodiment of an application device
• FIG. 2 shows section II in FIG. 1
• 3 shows a further embodiment of an applicator in a longitudinal sectional view
• FIG. 8 shows a further embodiment of an applicator in a longitudinal sectional view
• FIG. 13 shows a further embodiment of an applicator in a longitudinal sectional view, in which ventilation openings are arranged in the peripheral wall of the liquid container,
• FIG. 15 shows an embodiment corresponding to FIG. 13, but with differently designed ventilation openings
• FIG. 16 shows an exemplary embodiment in a representation corresponding to FIG. 13, with a single ventilation opening extending from the front end to the shaft end of the liquid container,
• Fig. 18 is a partial cross section along the line XVIII-XVIII in Fig. 17, and
• the one shown in FIG. 1 and also the other exemplary embodiments essentially consist of a sleeve-shaped pen shaft 1, a liquid guide system 3 holding a writing tip 2 and a sleeve-shaped tip part 4 which surrounds this with a radial spacing.
• the pen shaft 1 itself forms a container 5 for a writing liquid or for a cosmetic liquid.
• the rear end of the pin shaft 1 has a radially inwardly drawn region 7, onto which an essentially pot-shaped plug 8 is attached.
• the stopper 8 is preferably fixed to the shaft of the pin by gluing or ultrasonic welding.
• an end wall 11 is formed on the inner surface 10 of the shaft, which extends radially inwards and is pierced by a central ventilation opening 12.
• a semipermeable membrane 13 is fixed on the outside of the end wall 11 facing away from the writing tip 2.
• the axial distance between the end wall 11 and the bottom 14 of the stopper 8 is dimensioned such that there is also an axial distance or a cavity 15 between the membrane 13 and the bottom 14.
• This cavity 15 communicates with the atmosphere via a ventilation channel 16 which is arranged between the plug 8 and the narrowed area 7 of the pin shaft 1.
• the end face of the plug 8 lies against a radial shoulder 18 of the pin shaft 1 (FIG. 2) which extends radially outwards.
• a groove 19 is inserted into the end face 17, which connects the ventilation duct 16 to the atmosphere.
• the connection of the ventilation channel 16 to the cavity 15 takes place via at least one groove 20 in the end face 9 of the pin shaft 1.
• the membrane 13 prevents liquid from getting out of the container 5. However, it permits ventilation of the container in the direction of the arrows 21 if the liquid supply decreases during use of the application device, that is to say in its writing position. When the contents of the container are heated in this position, air in the opposite direction can escape to the atmosphere. A constant pressure equalization can thus take place in the container 5 while the applicator is in use.
• the front end of the container 5 is closed by a flange 23 which is part of the liquid guidance system 3.
• a tube section 24 is formed, which extends into the pen shaft 1 and which bears with its outer surface 25 on the inner surface 10 of the barrel.
• the connection between the pipe section 24 and the pin shaft 1 takes place, for example, by means of an adhesive.
• the tube section 24 is offset radially inward so far that the outer shaft surface 26 is flush with the edge surface 27 of the flange 23.
• a further tube section 28 is formed on the other side of the flange 23, the outer surface 29 of which is aligned with the edge surface 27.
• the tip part 4 lies in the tube section 28 with its rear end and comprises a tube 30 formed on the flange 23 with a radial spacing.
• a capillary material 33 formed, for example, from plastic fibers or a sintered plastic is arranged between the tube 30, which the writing tip ze 2 In the region of the tube 30 adjoining the writing tip 2.
• Tube 30, flange 23 and capillary material together form the liquid control system.
• the capillary material 33 is in fluid communication with the interior of the container 5 via a central through opening 34 in the flange 23.
• the front region 35 of the tip part 4 tapers conically towards the writing tip 2 and is connected in one piece at its front end to a tube section 36 which comprises the tube 30.
• a ventilation channel 37 which connects the interior of the tip part 4 or the cavity 38 arranged between the latter and the pipe 30 to the atmosphere.
• Ventilation openings 39 there are several ventilation openings 39 in the flange 23, which widen radially in steps towards the writing tip 2.
• a semipermeable membrane 40 is inserted into the radially widened opening area.
• the membrane 40 is fixed to the flange 23 or in the expanded area of the ventilation opening 39, for example, by gluing.
• the liquid container 5a is formed by a separate sleeve inserted into the pin shaft 1a.
• the rear end of the sleeve facing away from the writing tip 2 has an end wall 45 which is arranged at a distance from its end face 43 and is provided with a central ventilation opening 12a.
• a semipermeable membrane 13a with its edge regions is embedded in the annular projection protruding radially inward. There is an axial distance and thus a cavity 47 between the end wall 45 or the membrane 13a and the bottom 46 of the pin shaft 1a.
• This cavity 47 stands over at least one groove 48 in the end face 43 of the container 5a with a ventilation channel 49 in connection, which is present between the outside 50 of the container 5a and the inner surface 10a of the shaft and extends in the axial direction or in the direction of the central longitudinal axis 51 of the applicator.
• the ventilation channel 49 can extend over the entire circumference of the container 5a.
• the exterior 50 it is also conceivable for the exterior 50 to have a plurality of grooves (not shown) extending in the direction of the central longitudinal axis 51.
• the front end wall of the container 5a is formed by a flange 23a, which is part of the liquid guidance system 3.
• the flange 23a is inserted into a receiving groove 53 at the front end of the container 5a and is glued or ultrasonically welded there, for example.
• the tube 30a protrudes from the front of the flange 23a and is in fluid communication with the container 5a via a through opening 34a in the flange 23a.
• the tube 30a carries the writing tip 2 at its front end and is also filled with a capillary material 33.
• the tip part 4a abuts abut against abutment against the end face of the container 5a.
• the fluidic connection between the ventilation channel 49 and the cavity 38 takes place via a groove 54 in the end face of the tip part 4a facing away from the writing tip 2 (see also FIGS. 4 and 6).
• the flange 23a is pierced by a total of three approximately circular arc-shaped ventilation openings 39a.
• a membrane 40a is inserted in each of the ventilation openings 39a, the edge area of the membrane 40a being embedded in the plastic material of the flange 23a, that is to say the plastic material being extrusion-coated around it.
• the ventilation channel 49 as can be seen in particular in FIG. 5, completely encloses the container 5a.
• a groove 54 is assigned to each ventilation opening 39a (see FIG. 4).
• the container 5b is designed as a replaceable cartridge.
• the rear end of the container 5b is configured similarly to the rear end in the exemplary embodiment according to FIG. 3, but the semipermeable membrane 13b is fixed on the outside of the end wall 45.
• the tip-side end wall of the container 5b is formed by a flange 57.
• the flange 57 has a first longitudinal section 57a and a second, radially widened longitudinal section cut open 57b.
• the section 57a lies against the inner surface 60 of the container.
• the second longitudinal section lies with the section 57b projecting radially beyond the first longitudinal section 57a in a recess 58 in the end face 59 of the container 5b.
• flange 57 there are two diametrically opposite ventilation openings 39b which merge into a radially widened area 63 towards the writing tip 2.
• This area 63 like the entire ventilation opening 39b, is circular in cross section and extends to the edge 64 of the flange 57 (see in particular FIG. 9).
• a semi-permeable membrane 40b is inserted into the radially widened area 63 of the ventilation openings 39a.
• flange 57 there is a central through opening 66 which continues into the interior of a pipe section 67 protruding from the tip of the flange.
• the pipe 30b lies in the pipe section 67 and is supported on it by a flange 69 projecting radially outward from its circumference.
• the tip part 4b is inserted with a longitudinal section 70 which is radially enlarged from the inside over the flange 69 and fixed thereon.
• an aeration channel 49 as in the embodiment according to FIG. 3.
• a radial spacing 72 is present between the mutually facing end faces of the container 5b and the tip part 4b, thereby creating a connection between the ventilation channel 49 and the space 73 present between the two flanges 69, 57.
• the space 73 is connected via bores 74 in the flange 69 to the cavity 38 enclosed by the tip part 4b, which in turn communicates with the atmosphere via the ventilation duct 37.
• the membrane 13c is a film which is fixed on the outside of the end wall 45, for example by gluing.
• the z. B. also formed as a membrane 13d with its edge fixed in a retaining ring 75 which is attached to the outside of the end wall (45).
• the design and fixation of the membranes 13c, 13d shown in FIGS. 11 and 12 can of course be used on the outside and inside of all ventilation openings in an application device.
• the exemplary embodiment according to FIG. 13 is an application device in which a separate container 5c is arranged in a pen shaft 1c with the release of a ventilation channel 49.
• the container 5c is closed at its rear end by a molded end wall 76.
• the front end wall is formed by a flange 77, which is formed on the rear end of the tube 30c.
• At least one ventilation opening 39c in the front area and at least one ventilation opening 12c in the rear area is arranged in the peripheral wall of the container 5c.
• the ventilation openings 39c, 12c are designed in the manner of elongated holes and extend in the direction of the central longitudinal axis 51.
• the ventilation openings 39c, 12c are closed with semipermeable membranes 40c, 13e and communicate with the ventilation channel 49.
• the facing end faces of the tip part 4c and Containers 5c are placed side by side.
• a groove 83 is provided in the end face of the tip part 4c facing the container 5c.
• the flange 77 is inserted into the container 5c with a first longitudinal section 84.
• a second radially outwardly extended longitudinal section 85 lies in a receiving groove 86 in the front face 87 of the container 5c.
• FIG. 15 there are a plurality of ventilation openings 39d, 12d in the front and rear area of the container 5d, which are also designed in the form of elongated holes, but which extend in the circumferential direction, and through semipermeable membranes 40d, 13f are closed. 15 corresponds to that of FIG. 13.
• a single ventilation opening 88 which extends from the front container area to the rear container area and is also of oblong shape. The ventilation opening 88 extends obliquely to the central longitudinal axis 51 or extends helically, and is closed by a semipermeable membrane 89.
• This membrane like the ones mentioned above, consists of a thin film, a fabric, a sintered material or a combination of these materials.
• the exemplary embodiment according to FIG. 17 corresponds essentially to that of FIG. 13, but ventilation of the container 5e in its front area does not take place via a ventilation opening or semipermeable membrane, but via the liquid control system 3d. Accordingly, this is designed differently.
• the tube 30d carries in its front area, which is radially expanded from the inside, the writing tip 2. This is supported with its rear face 90 on an inwardly projecting radial shoulder 91.
• the capillary pressure which conveys the liquid in the direction of the writing tip when the writing tip is held down is thus reduced, and dripping of liquid is prevented when the applicator is in this position.
• the flats 93 can extend parallel to the central longitudinal axis 51. However, it is also conceivable that they diverge slightly towards the shaft 1e, which means that the cross-sectional area of the liquid channels 94 to the container 5e decreases. Their capillary action on the liquid increases accordingly. A configuration of this type can therefore produce a capillary action in the direction of the container and thus further restrict the flow of liquid to the writing tip 2.
• Venting can also take place via free capillaries of the writing tip.
• the insert 93 need not necessarily extend to the rear end of the tube 30d. It preferably has a length of 5 to 30 mm. Its diameter ranges between 2 mm and 5 mm.
• the height 95 of a liquid channel 94 is preferably in the range from 0.02 to 0.10 mm.
• the width 96 of the flats 93 results from the respective diameter of the insert 92.

Landscapes

• Coating Apparatus (AREA)
• Pens And Brushes (AREA)
• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
• Liquid Developers In Electrophotography (AREA)
• Gyroscopes (AREA)
• Amplifiers (AREA)

Applications Claiming Priority (3)

Publications (2)

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Families Citing this family (11)

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• 2000
  • 2000-04-15 EP EP00926956A patent/EP1171316B1/fr not_active Expired - Lifetime
  • 2000-04-15 DE DE50000655T patent/DE50000655D1/de not_active Expired - Lifetime
  • 2000-04-15 WO PCT/EP2000/003434 patent/WO2000063028A1/fr active IP Right Grant
  • 2000-04-15 JP JP2000612143A patent/JP4495352B2/ja not_active Expired - Lifetime
  • 2000-04-15 AT AT00926956T patent/ATE226150T1/de active
• 2001
  • 2001-10-17 US US09/982,183 patent/US6503016B2/en not_active Expired - Lifetime

Non-Patent Citations (1)

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