EP1097003A1

EP1097003A1 - Dispenser for media and method for producing a dispenser

Info

Publication number: EP1097003A1
Application number: EP99934631A
Authority: EP
Inventors: Stefan Ritsche; Lothar Graf
Original assignee: Erich Pfeiffer GmbH; Ing Erich Pfeiffer GmbH
Current assignee: Aptar Radolfzell GmbH
Priority date: 1998-07-14
Filing date: 1999-07-08
Publication date: 2001-05-09
Anticipated expiration: 2019-07-08
Also published as: DE59907214D1; WO2000003812A1; BR9912815A; DE19831526A1; AU5033799A; EP1097003B1; ES2207259T3; ATE250981T1

Abstract

A piston plunger (1) is injection molded from two longitudinal sections (2, 3) in parallel axial position. The shorter component (3) is then pivoted around a hinge joint (4) into position having the same axis as the other component (2) and tightly connected to the latter using locking means (20). The shorter component (3) then forms a nozzle core (67) and the longer component (2) forms a piercing tip (68) for opening a piston membrane (75).

Description

Media dispenser and method of making a dispenser

The invention relates to a dispenser or a unit suitable as a dispenser, which are used for receiving, storing and / or dispensing media. These can be liquid, pasty, powdery and / or gaseous. All parts of the dispenser or the structural unit can consist of plastic or can be die-cast or injection molded parts. For dispensing, the dispenser can be carried freely with one hand and operated at the same time. Its length is therefore at most 10 cm or 7 cm, its greatest width is 8 cm or 5 cm. The dispenser can be suitable for dispensing individual drops of the medium, a bundled spray jet or an atomized particle or droplet aerosol. Furthermore, the dispenser can be designed for the discharge of only a single media dose or for a single stroke without a return stroke, or for repeatable media discharges with a return stroke driven therebetween.

It has proven to be expedient to assemble complicated structural units from separately shaped components which when forming without or with an immediate intermediate connection, they are spaced apart or in a different position than in the operating state. To include the features and effects in the present invention, reference is made to DE-OS 196 05 153 and to German patent application 198 13 078.3.

The invention has for its object to provide a dispenser or a method for producing a structural unit for a dispenser or the like, in which disadvantages of known designs are avoided. In particular, it should be possible to create units which have an increasing or decreasing internal or external cross section in the opposite direction. The dispenser should be easy to manufacture and safe to operate.

According to the invention, two or more components are produced at the same time or with the same flow of the plasticized material, ejected from the mold immediately after solidification or otherwise exposed at their joining zones and immediately shifted against one another in such a way that they are then combined to form the structural unit. The same material or different materials can be used for the components. The components run through the same temperature curves until solidification and can have the same or different material volumes. The components are expediently produced in the same shape or in such a way that they adjoin one or more common, one-piece molded parts of this shape. This applies in particular to the joining surfaces of the components, which can be formed together with a movable molded part lying side by side. After the components have solidified and this and, if appropriate, a further molded part has been withdrawn immediately, these joining zones are exposed. Then can the components are moved relative to one another until they are mutually connected and, if necessary, only then completely ejected from the mold. The components expediently lie parallel to one another in the production or almost directly up to the point of contact. After the mutual connection, one component forms an extension of the other component in the direction of its greatest extent. After this connection, which forms the operating state of the structural unit for the operation of the dispenser, the two components engage in one another over a length which is less than the length of one or the other component. However, the components can also be connected only with end faces without mutual longitudinal engagement and can be secured in their mutual position by a further component. The mutual securing of the components can be free of play or positive, namely a radial centering or a trigger protection.

The training according to the invention is suitable for outdoor or. Base body of donors, however, is particularly useful for core bodies. Such a core body is completely enclosed in the interior of the dispenser or the respective base body, for example within an outlet nozzle. This base body can also form the third component for securing the position. One or both components of the structural unit advantageously form a central section with the greatest outside width in the longitudinal direction. At its respective end there is an end section with a reduced outer width. Each of the end sections is formed by a different component. An end portion can be a hollow needle with a smallest diameter at the needle tip of less than a millimeter and a length of less than 10 or 8 mm. The other end section can be a cup-shaped, longitudinally grooved or recessed on its outer end face with a radial body projecting covenant. This forms the shorter longitudinal part of the middle section.

The two components are advantageously connected to one another via a single connecting member or a bridge, each of which has a bridge section to each of the

Components immediately connected. The bridge sections can then be moved relative to one another. They connect to each other via a connection point. During the mutual movement of the components, such as the respectively associated bridge section, this can remain stationary with respect to the associated component. The connection point is expediently a hinge zone with a single hinge axis and / or a predetermined breaking point, at which the bridge sections separate during the mutual movement of the components and before reaching the operating position, forming mutually opposite fracture surfaces. The mold cavity for the bridge can form the flow channel, possibly the only one, via which the plasticized material flows from the mold cavity for one component, in particular the larger-volume component, into the mold cavity for the other component. The smallest cross section of this channel and thus the bridge can be less than 5, 2 or a tenth of a mm ² .

During manufacture, the connection surfaces of the two components that immediately meet in the operating position are expediently on the same level. A securing element or the like can also protrude over one of these connection surfaces. During manufacture, these pads can face in the same direction or in opposite directions. The bridge also extends to each connection surface. It can have a surface that merges directly into the connecting surfaces or, after separation, fracture or separating surfaces lying in this plane. The components can also WO 00/03812 - 5 _. - PCT / EP99 / 04802

be transferred into their operating position by a radial or linear movement. Here, one component forms a sliding guide for the other component that is flanked only on the floor and on the side. However, this component only reaches the guide after a first part of the displacement path or after the bridge has been separated. In addition, the components can be manufactured separately and then assembled according to the invention.

Irrespective of the training described, the donor is trained in particular to take up and store biological active substances over several weeks, months or years. It can be physiological active substances, such as hormone-containing active substances and / or active substances, which contain cleavage products, such as peptides, of protein. Such biological information carriers, which can contain amino acids and other similar active substances, can be very sensitive to moisture. They are therefore stored in a pressure-tight closed chamber in the dispenser. It is only opened immediately before it is discharged from the donor, e.g. by destroying a closure by means of the above-mentioned structural unit.

These and further features of the invention are also apparent from the description and the drawings, the individual features being realized individually or in groups in the form of sub-combinations in one embodiment of the invention and in other areas and representing advantageous and protectable designs for which protection is claimed here. Embodiments of the invention are shown in the drawings and are explained in more detail below. The drawings show:

1 shows a dispenser according to the invention in a partially sectioned view, WO 00/03812 - D, - PCT / EP99 / 04802

2 shows a plan view of the dispenser according to FIG. 1, rotated by 90 °,

Fig. 3 shows a detail of FIG. 1 in an enlarged

Presentation,

4 shows a detail of FIG. 3 in a further enlarged representation,

5 is a plan view of FIG. 4,

Fig. 6 is a plan view of Fig. 3 in scale

Fig. 4,

7 shows a longitudinal section through FIG. 4,

8-10 further exemplary embodiments in representations corresponding to FIGS. 3 to 5,

11-13 show a further embodiment in representations corresponding to FIGS. 3 to 5,

14 the smaller component according to FIG. 12 in a view from below,

15 shows a detail of FIG. 11 in an enlarged manner

Presentation,

FIG. 16 shows a cross section through FIG. 15, and

17-19 show a further embodiment in representations corresponding to FIGS. 11 to 13. In the dispenser according to FIGS. 1 to 3, the structural unit 1 is at one end as an inner body, freely projecting driver for a piston, tightly enclosed rod section, plunger, sewer pipe, piston shaft, piercing tip, coupling member for a media displacer, nozzle core, swirl chamber limitation,

Limiting a longitudinal channel, limiting a transverse channel, stiffening element, filler, stroke stop and the like are arranged. It consists of two one-piece, axially identical components 2, 3. The part 2 is at least four or six times longer than the part 3 and is axially symmetrical over its entire length. In the first position and in the casting mold, the parts 2, 3 according to FIGS. 4 and 5 are axially parallel to one another. In the operating position according to FIGS. 1 and 3, the part 3 downstream is an extension of the part 2, with which it is connected in a telescopically movable or fixed manner. In both positions, the parts 1, 2 are continuously connected to one another only by means of a single, flexible connection 4 without an area closure.

A guide 5 is provided within part 2 for guiding, centering and movably or firmly holding the part 3 on the smaller last partial path of its pivoting movement. This is formed by the inner circumference of a sleeve 6, which is a short end section of part 2. The end of part 3, which ends directly and only at its inner circumference, forms the associated hollow plug-in projection or resilient mandrel 7. The unit 1 is permanently completely inside an outermost casing 8 and only with part of its length within an inner casing 9, which is at a radial distance provided axially in the jacket 8 and is formed in one piece with this. The jacket 9 surrounds the transition area between the parts 2, 3 tightly with radial pressure as a securing member, but is free in the same direction as the jacket 8, however less far ahead and is shorter than the jacket 8. The areas 1, 8, 9 lie in the central axis 10 of the dispenser or its pump.

To transfer from the first position with the axis 11 to the second position or operating position, the part 3 is pivoted to the axis 10 in an arc path in the direction 12 over 180 °. The part 3 remains at right angles to the plane of motion 17, namely immobile in the direction 13 relative to the part 2. At the end of the swivel path, the link 7 dips counter to the direction of flow 14 or parallel to the axis 10 in accordance with one

Push button resiliently into the counter member 5. The first contact of the link 7 on the part 2 takes place only after half the swivel path, e.g. after at least 120 °. The distance 15 between the axes 10, 11 in the first position is equal to the sum of the radial dimensions of the parts 2, 3 between these axes in the area of the connection 4. Compared to this radial extent of part 2 or part 3, the corresponding radial extent of the associated one Limits 5 and 7 smaller. In the second position, the parts 2, 3 directly adjoin one another in a plane 16 perpendicular to the axes 10, 11 or to their common axial plane 17, via which only the link 7 protrudes in the form position.

4, a part of the tool 18, 19 or the injection mold or of its movable trains is indicated by dash-dotted lines. The shape position of the parts 2, 3 and the associated part of the dispenser are indicated by dash-dotted lines in FIG. 3. Securing means 20 formed in one piece with the parts 2, 3 and separate therefrom serve to secure the positions 2, 3 of one another in the operating position. The link 5 forms guide surfaces 21, 22 for counter surfaces 25, 26 of the link 7 on an inner circumference. They comprise a conically widened or obliquely flanked inlet opening 21, to the narrowest area of which an expanded centering surface adjoins. The link 7 comes into contact with the surface 21 with the inclined surface 26 provided at its end, after which its adjoining surface 25 comes into engagement with the annular groove 22 and at the same time another inclined surface comes into centering engagement with the surface 21. The surfaces 21, 22 are around the axis 10 and the surfaces 25, 26 around the

Axis 11 curved, which in the second position lies axially with axis 10. The ring or ring section or ring section end or end face 29 of the link 7 is contact-free in the operating position.

The connection 4 contains a single micro-connection 30 with continuous full cross sections. With flat or rectangular cross sections, it has a maximum thickness of less than four or two tenths of a millimeter and a width of less than one millimeter. Both dimensions are significantly smaller than the diameter of the surfaces 21, 22, 25, 26. The flat cross section of the connecting member 31 is perpendicular to the axes 10, 11 and to the level 17. The link 31 is symmetrical to the level 17 and extends in every position to to the level 16. It forms a film hinge with the hinge axis 23 lying in the level 16 and perpendicular to the level 17. The central plane 17 ′ of the link 31 lying parallel to and between the axes 10, 11 and perpendicular to the level 17 lies in FIG the axis 23 and parallel to the associated axial plane 24 of the axis 10. The length of the link 31 along the plane 17 is less than its width along the plane 17 'and at most as large as or less than its thickness parallel to the axes 10, 11 . The side edges 32 of the link 31 which are perpendicular to the plane 17 ', 24 are parallel. Around the axis 10 or 11 extends the bridge 31 over an arc angle of at most 35 ° or 25 ° and at least 15 ° or 20 °.

The link 31 forms a bridge section 33 or 34 of the same cross-sections from the axis 23 to the outer circumference of the associated part 2 or 3. Section 33 adjoins the connecting surface or the outer circumference of part 2 in a section curved up to flanks 32 about axis 10. For the connection of the section 34, the outer circumference of the part 3, which is otherwise curved around the axis 11, has a flattening 37 parallel to the plane 17 ', 24 and symmetrical to the plane 17. It is approximately twice as wide as the link 31. Its surface 38, which in the shape position is turned away from the plane 16 and parallel to the plane 16, therefore forms the bottom of a gap delimited by the surfaces 36, 37. Its gap width is smaller than each of the dimensions of the link 31. This gap is from the outer circumference of the jacket

39 of the sleeve 2 and flanked by the surface 37 over its entire height. The surface 37 merges at an angle into an annular end face or pressure surface 40, on which when moving in

Direction 12 can attack the force at right angles. The area

40 is formed by an annular collar 41. It connects to the link 7 with the end face 43 facing away from it. The remaining, longest section of part 3 protrudes opposite surface 14 over surface 40. The projection 41 forms the radially farthest and further projecting area of the part 3, the surface 7 and the only connection for the link 31. At the end projecting beyond the surface 40, the otherwise hollow or sleeve-shaped part 3 forms a closed part End wall 42. The surface 43 forms a flat stop 43 lying in the shape position in the plane 16. In the operating position, it lies against a flat counterstop 45 of the part 2, which as end and end surface also lies in the plane 16 and is ring-shaped and connects at an obtuse angle to surface 21. The surfaces 21, 22 are formed by the inner circumference of an opening 44 which is circularly delimited about the axis 10 and form both a radially projecting and a recessed snap member 46 for corresponding counter sections of a snap member 47 of the link 7. Its snap surfaces 25, 26 are complementary to the Snap surfaces 21, 22 formed and can deflect radially resiliently and spring back. As a result, the parts 2, 3 are positively secured for themselves and without engagement of the link 9 in the operating position against one another against mutual rotation or axial or radial movements.

The links 8, 9 connect in one piece to a common end wall 48, from which they only project in the opposite direction 14. The middle section 49 of the unit 1 projects freely over the free end of the jacket 9. The part 3 extends with its flat end surface to the inner surface of the wall 48. The outside of the wall 48 is penetrated by the only opening of the media outlet 50. This opening is formed by the end of a nozzle channel lying in the axis 10 and only penetrating the wall 48. The narrowest section 54 adjoining the opening 50 merges upstream into a flared section 55. It extends to the inner surface of the wall 48 and to the associated end surface of the part 3. The part 2 is penetrated in the axis 10 by a channel 51 over its entire length. It is continued in the cup-shaped part 3 up to the inside of the end wall 42. The channel 51 has not circular but subsequent to the annular bottom of the opening 44 three-armed star-shaped cross-sections that are continuously expanded in the direction of 14 at acute angles. Contrary to direction 14, this cross section merges continuously into circular cross sections narrowed further at an acute angle. They extend to the associated end of unit 2.

The part 3 is penetrated on the inner circumference of the collar 41 parallel to the axis 10 by two mutually opposite openings 53. They are curved in the shape of a partial ring around the axes 10 and 11 and, together with the radially inner boundary surface, form a continuous continuation of the outer circumference of the section which projects beyond the surface 40. In this outer circumference 3 extending longitudinal grooves 56 are provided over the entire length of the part. Of these, each with the same cross-sections forms a continuous continuation of the associated opening 53. A transverse groove of the same width as the channels 53, 56 extending to the surface 43 and level 17 is provided in the surface 29. Through them the projection is divided into two spaced-apart members 47. You can radially spring against each other parallel to level 17. On the end surface projecting above the collar 41, the part 3 has a guide or swirl device 60 for the medium, which, like the channels 56, delimits it together with the wall 48. A central depression 58 is provided in the end surface. Two transverse and tangential channels 58 branching off from one another and branching off from the channels 56 open into them. Thus, the medium is set in a swirling or rotating flow about the axes 10, 11 and is thus introduced directly into the section 55. Its circular boundary is congruent with the boundary of the chamber 58. The grooves 59 are narrowed to the chamber 58, have continuous floor surfaces therewith in one plane and close to the bottom of the grooves 56 on one Width that is smaller than the width of the grooves 56. The breakthroughs 53 are limited only by part 3.

The dispenser has two units or base bodies 62, 63. They have to be manually moved parallel to axis 10 in order to actuate the discharge after overcoming a safety device 61 by shortening the dispenser. The second base body 63 includes the walls 8, 9, 48 and the outlet 50 in one piece. They form a discharge nozzle 64 which projects freely in the direction 14 and continuously decreases in the outer width of the jacket 8 for introduction into a body, such as a body

Nasal opening. The inner circumference of the jacket 9 also lies closely against the outer circumference of the collar 41 and is narrowed in the plane of the surface 40 to form a depression 65. The channel 54, 55 connects to the bottom surface thereof. This channel has a length of at most two or one millimeter and a smaller width in comparison. The opening 65 lies closely over the entire length on the outer circumference and on the end face of the part 3, delimits the channels 56, 53 there and adjoins a shoulder face 66 on which the face 40 abuts tightly in the sense of the securing means 20.

The section of part 3 protruding over collar 41, like the other projection 7, has a smaller outer width over its entire length than collar 41 and forms a nozzle core 67 for atomizing nozzle 50. The outer width of core 67 is at most 4 mm or 2.5 mm and that of part 2 and the federal government 41 at most 5 mm or 4 mm. The smallest, capillary-like width of the channel 51 is less than one or half a millimeter.

With this smallest width, the channel 51 passes through the upstream end of the part 2, which forms a needle 68 in the axis 10. It is slimmer and shorter than the section 49 adjoining it, goes into this with an outer shoulder over, is tapered at an acute angle in the opposite direction 14 and at the beveled end is penetrated by an inlet opening 69 from the channel 51. The units 62, 63 form a pump 70 without a return spring or return stroke. Its working stroke is at least half or at most two thirds smaller than the length of the unit 1. In FIG. 1, its starting position and in FIG. 3, its end position or a position shortly before its end position is shown. The dispenser unit, which is smaller in terms of length and external width, comprises a one-piece, cup-shaped media store 71 made of glass or a plastic with similar properties. The elongated memory 71 is inserted against the direction 14 in the one-piece, cup-shaped base body 62 with most of its length. So it is tightly encased on the outer circumference of the shell of the body 62 over most of its length. Its enlarged outer collar lies permanently outside the body 62 in the jacket 8. The inner circumference of the vessel 71 forms a cylinder raceway 72 for the sealed sliding guidance of a closure or piston 73 made of an elastomer. The bottom of the reservoir 71 is supported on links 74 at a distance which is twice as large as the working stroke from the bottom of the body 62. 1, they can be a central stamp or, according to the upper region, longitudinal ribs projecting from the inner circumference and are formed in one piece with the body 62. The piston 73 is inserted into the bodies 62, 63 before the storage 71 is inserted and closes the storage space in a pressure-tight and germ-tight manner. It can contain germicidal sterilizing agents.

At a distance in the middle between its end surfaces, the sleeve-shaped, cylindrical piston 73 has a transverse wall or membrane 75. Their end faces are bottom areas of the same depressions 76, which extend to the respectively associated ones End surface 77 with the same taper and the same cross section as the widest end of the needle 68 are expanded. In the starting position, the needle tip lies at a gap distance from the intermediate wall 75. Its thickness is at most two or one millimeter. With the start of the stroke of the unit 62 in

In the direction 14, the needle 68 pierces the wall 75 without detachment of particles. Then the annular shoulder 78 abuts between the sections 49, 68 on the end surface 77. The needle tip is then set back in contact-free manner in the other recess 76 with respect to the other end surface of the piston 73. The outer circumference of the needle 68 lies with radial pressure on the first-mentioned recess 76 and can increase the radial pressure of the outer circumference of the piston 73 on the cylinder 72 accordingly . The storage space can be completely filled with liquid medium without gas inclusions.

As soon as the needle tip has penetrated the wall 75 and takes the piston 73 with it in the opposite direction 14, the medium flows from the storage chamber in the direction 14 through the opening 69 first into the gas-filled channel 51 and then into the channels 52, 53, 56, 59, 58 of part 3, in order to then exit under pressure through the channel 54, 55. At the end of the stroke, the piston 73 but not the part 2 strikes the bottom of the accumulator 71. Up to this end, the outer circumferences of the storage collar and of the body 62 are guided on the inner longitudinal ribs 79 of the casing 8. These projections 79 are triangular in cross section. They form angularly flanked line edges for low-friction guidance. In the end position, the memory 71 can be at a short distance from the jacket 9 or can accommodate it. The unit 1 protrudes over the jacket 9 with more than half its length.

To form the discharge actuation 80, the bodies 62, 63 have pressure handles 81, 82 pointing away from one another. The outside of the bottom of the body 62 forms the recessed handle 81 over which the body 63 protrudes in the starting position in the opposite direction 14. The end of the connecting piece 64 or jacket 8 facing away from the outlet 50 connects in one piece to a substantially enlarged cap 83, namely its end wall 84 which is right-angled to the axis 10. It in turn merges in one piece on the outer circumference into the cap jacket 85 which projects freely in the opposite direction 14. The outside of the wall 84 forms the handle 82 only on two sides of the connecting piece 64 facing away from one another, since the walls 84, 85 are elongated or oval in an axial view parallel to the plane 17 ′ or 24 or to the plane 17. The mutually opposite, long flanks of the jacket 85 are penetrated by the same cutouts 86 lying opposite one another only over part of the length of the jacket 85 from its end edge. Through it, the user can grip with a finger such as the thumb and operate the handle 81. The bottom of the memory 71 is protected at a distance between the wall 84 and the cutouts 86, the height of which is greater than the working stroke.

The fuse 61 blocks the actuation 80 in a positive manner in the starting position and forms an immediate one

Pressure point connection between the bodies 62, 63. It has two links 87, 88 which engage with one another via a snap connection 89, one of which is each formed in one piece with the associated body 62, 63. The annular disk-shaped member 87 connects via a separation point 90 directly to the outer circumference of the body 62 at a distance between the ends thereof. The link 88 projects freely from the wall 84 against the direction 14. It forms annular sections or sections which are spaced apart in the circumferential direction. Its inner circumference forms the connection 89 with the outer circumference of the link 87. The break bridge 90 can have the dimensions described with reference to the link 31. After fracture, the separating surfaces are located radially in the outer circumference of the body 62 or opposite offset inside. However, the breaking points can also only lie between the guide surfaces of the ribs 69, for example if the bodies 62, 63 are in a certain rotational position relative to one another and / or contrary to the illustration, are secured against rotation against one another in a positive manner at least in the starting position or a first subsequent partial stroke.

The link 87 is inserted into the body 63 during assembly with the body 62 in the direction 14 until the stop connection 89 is engaged. Above a predetermined force with which the handles 81, 82 are pressed towards one another, the point 90 breaks and, owing to the subsequently significantly lower actuation resistance, the working stroke begins and ends at a correspondingly high speed. The unit 1 is also inserted into the body 63, 64 in the direction 14. It stands back from the handle 82 and the associated ends of the ribs 79. The piston 73 is also permanently in the direction 14 at a distance from the wall 84 completely inside the jacket 8.

According to FIG. 4, the casting or manufacturing mold has a base body 18 and slides or trains 19 which can be moved in it parallel to the axis 10, 11. The body 18 forms the molding surface for the outer circumference of the part 2 from the surface 45 to the end of the needle 68, for the outer circumferences of the sections 41, 67, for the surfaces 40, 56, 58, 59, for the remaining end surface of the section 67 and if necessary for surfaces 53.

Their shaped surfaces could also be provided on the train 19. The body 18 also forms the shaped surfaces for the surfaces 32, 37, 38 of the link 31. The pull 19 forms the shaped surfaces for the surfaces 43, 45 lying in one plane, the projection 7, its transverse groove, the channel 51 and the depressions 44 , 52.

After the plastic has solidified or polymerized in the mold, the train 19 is pulled back in the direction 14 until he is separated from unit 1. The links 46, 47 yield due to the material elasticity. The height of the links 46, 47 is less than five, two or one tenth of a millimeter. The unit 1 can now be completely or partially ejected in the direction 14 from the body 18 in the direction 14 in such a way that the part 3 is exposed while the part 2 is still held in the body 18. Then or after complete separation of the unit 1 from the mold, the parts 2, 3 are pivoted in the direction 12 to the mutual axis-coherent connection. In FIG. 3, the hatching of part 3 is selected differently from the hatching of part 2 only for the sake of clarity. The oval end or ring surface of the needle 68 is cut after demolding.

According to FIG. 8, part 3 is penetrated with a radial distance from and around the axis 10, 11 by separate longitudinal channels 52, which connect downstream to the outer circumference of the core 67 via substantially shorter transverse channels 53 and from there into the channels 56. The channels 52, 53 are completely delimited by part 2 on the circumference. The surface 45 is arranged sunk relative to the associated end face of the part 2 by the thickness of the collar 41 as the bottom of the opening 44. It is open to link 41 along its width as groove 21. The collar 41 projects as a tab only over the width of the link 31 over the circumference of the core 67. The collar 41 fills the groove 21 in the operating position. It passes through the edge of the opening 44 in the level 17. The part 3 extends in the shape state only up to the level 16, above which the part 2 protrudes. Groove-shaped transverse channels 53 can be provided in surface 43. They connect to the channels 56 at an angle. The upper end of part 2 is tapered in the shape of a truncated cone. The section 49 has an enlarged section at a distance between the parts 3, 68. One end of which strikes at the end of the jacket 9. The Mold train 19 therefore has the molding surfaces up to and for this end and the peripheral surfaces of part 2 lying between them.

According to FIGS. 8 to 19, no snap connections are provided between parts 2, 3. They are held together either solely by engaging part 64 or by gluing or welding their connecting surfaces. According to FIGS. 11 to 16, the direction of movement 12 is linearly perpendicular to the axes 10, 11. According to FIG. 11, part 3 protrudes in the longitudinal direction above part 2. The bridge 31 is a predetermined breaking element. Its flat and defined by cross-sectional tapering separation zone 35 lies in the plane 16. The link 31 closes at point 36 up to the associated outer circumference only at surface 45 of part 2 and at point 37 up to surface 43 only at the cylindrically curved outer circumference of Part 3 and therefore does not extend beyond level 16 against direction 14. The zone 35 lies at the point 36 in the plane 16. Thus, in the operating state, the link 31 forms a projection on the circumference of the part 3. The base surface 38 of the link 31, which is inclined to the level 16, can be concave or different in the axial view according to FIG. 16 be curved or connect to the surface 45 in order to ensure a precisely defined breaking behavior. The base surface facing away from it can also lie freely or in the direction of the zone 35 at an acute angle to the surface 38 and can be set back from the surface 43 by a depression. The cylindrical part 3, for example, has circular cross sections along its length with flat flats 26 of the same width facing away from one another. They are closely matched to the side flanks 21 of the continuation groove of the opening 44. The bottom is formed by the surface 45. Within the jacket 9, these surfaces 26 delimit the channels 56. The grooves or transverse channels 53 open into them outside the Part 2. On the side facing away from link 31, part 3 can have a collar shoulder 41 according to FIGS. 8 to 10. In the operating position, it fills the groove 21 up to the outer circumference and up to the end face of part 2. Its side flanks therefore adjoin the surfaces 26 in one plane.

The part 3 is displaced in the direction 12 against the axis 10 by pressure load on the side of its circumference facing away from the link 31. With the beginning of this movement, the link 31 shears off in the plane 16 from the surface 45 at 35, after it may have been slightly elastically or plastically deformed beforehand. The subsequent edge of the depression in surface 43 can be a shear edge for smoothing the fractured surface of part 2. Part 3 then enters groove 21 only after a short displacement. As a result, it is in the direction of 13 until it stops in front of it

Circumferentially guided on the inner circumference of the opening 44 without play. With this stop, the link 31 enters an opening 22 of this circumference. This opening adjoins the surface 45 and, according to FIG. 12 as an axially securing bolt, can only extend over part of the height of the depression 44 or according to FIG. 13 over its entire height. This engagement forms a link in the fuse 20.

According to FIGS. 17 to 19, the movement 12 is both a pivoting movement about the axis 23 and immediately following it a linear movement. The plane 17 'lies obliquely or at right angles to the plane 17. The cross-section of the link 31 can be doubly convex in the form of a lens, namely delimited by the outer circumferences of both parts 2, 3 and lie directly adjacent to or subsequently to a flank of the groove 21. The oppositely facing surfaces 43, 45 overlap one another with the cross section of the link 31 to form the fracture zone 35. The collar 41 stands over the surface 43 the flanks 26. It is closely matched to the recess 44 in the surface 45 and narrower than the core 67. With the beginning of the rotation about the axis 23 parallel to the axis 10, 11 and lying within the outer circumferences of the parts 2, 3, the link 31 is sheared in a twisting manner. One flank 26 extends to the end of the associated flank 21 lying on the outer circumference of part 2. The other flanks 26, 21 only come into engagement with one another after a rotation of at least 90 °. From this moment on the linear shift takes place up to the axis-like position. The plate or flat strip-shaped collar 41 then completely fills the opening 44. The parts 2, 3 can then also be secured to one another by self-locking or wedge locking. The core 47 lies on both sides adjacent to the flanks 26 on the end face of the part 2, as can be seen in dash-dotted lines in FIG. 19. The surface 66 according to FIG. 3 can then, as in FIGS. 8 to 10, rest securely both on the surface 45 and on the surface of the projection 41 lying in the same plane. The surface of the projection 41, which lies tightly against the bottom of the opening 44, is provided with a transverse groove 53 within the circumference of the core 67. It connects at an angle to the channels 56. Only one of these channels 56 penetrates the projection 41 in such a way that it is limited by the entire circumference.

All features of all embodiments can be provided in a common embodiment, namely combined with one another or added to one another. All properties and effects can be provided exactly or only essentially or approximately as described and, depending on the requirements, also deviate more from them. Right-angled reference positions are also to be understood as transverse positions deviating therefrom. The proportions shown are particularly favorable.

Claims

Claims for media dispensers and methods for making a dispenser

1. Dispenser for media, with a structural unit (1) consisting of at least two components (2, 3) which determine the operating position and which comprise a first and a second component (2, 3), which are in a first position (Fig. 4) via a connecting zone (36, 37) adjoining them (30) close to one another, essentially in one piece, and movable from this position against one another into at least one second layer (FIG. 3), characterized in that the one Component (2, 3) in the second position protrudes over the other component (3, 2), in particular in a longitudinal axis (10) as an extension.

2. Dispenser according to claim 1, characterized in that at least one of the components (2, 3) an inner body, a freely projecting driver, a closely enclosed rod section, a plunger, a sewer pipe, a piston shaft, a piercing tip (68), a coupling member for a media displacer (73), a nozzle core (67), a swirl chamber delimitation (58, 59), a delimitation of a longitudinal channel (51, 52, 53, 56), a delimitation of a transverse channel (59) or the like, that in particular at least one of the components (2, 3) forms a hollow profile over the largest to the full part of its length, and that preferably at least one of the Components (2) is substantially tubular over the largest to the full part of its length.

3. Dispenser according to claim 1 or 2, characterized in that the components (2, 3) have significantly different material volumes and / or lengths, that in particular each of the components (2, 3) protrudes over the other with most of its length, and that preferably the components (2, 3) in the second position are essentially axially aligned.

4. Dispenser according to one of the preceding claims, characterized in that at least one of the components (2, 3) at its end remote from the other component (3, 2) forms a narrowed mandrel (68, 67) that in particular the components (2 , 3) connect directly tight to each other at the front, and that preferably the components (2, 3) are in engagement with a common securing member (9, 48).

5. Dispenser according to one of the preceding claims, characterized in that the one component (3) with a projection (7) in a plug opening (44) of the other

Component (2) engages that in particular the components (2, 3) are secured to one another directly by means of a snap connection (46, 47), and that preferably the shorter component (3) has the projection (7) and / or a snap member formed thereon (47) forms.

6. Dispenser according to one of the preceding claims, characterized in that the components (2, 3) are connected to one another via a joint, a predetermined breaking member or the like, and can be transferred along an axis (23) between the two layers, in particular that the joint on Film hinge (31) with a single hinge axis (23) which is essentially perpendicular to the longitudinal axis (10, 11), and that preferably the connection (30) outer circumferences and / or end faces of the two components (2, 3) are directly integral with one another connects.

7. Dispenser according to one of the preceding claims, characterized in that the components (2, 3) connected to one another in the first position via a predetermined breaking member (31) have fracture surfaces in the second position, which are transverse to and on opposite sides of the longitudinal axis ( 10, 11) that in particular one component (2) forms a sliding guide (21) for the other component (3) along an end face, and that the sliding guide (21) preferably forms the other component (3) on the outer circumference (26) leads.

8. Dispenser according to one of the preceding claims, characterized in that a rotation lock is provided between the components (2, 3), which extends only over part of the length of at least one of the components (2, 3), that in particular the rotation lock ( 31) on

The outer circumference of at least one of the components (2, 3) is provided, and that the anti-rotation device is preferably formed by the connection (31).

9. Dispenser according to one of the preceding claims, characterized in that the dispenser has a first base body

(62) with means for receiving a media store (71) and a second base body (63) with a media outlet (50) that can be moved together with the assembly (1) relative to the first base body (62) for discharge actuation, in particular the assembly (1) a piston tappet for a piston in the first base body (62) mounted thrust piston (73) forms and both components (2, 3) are tightly encompassed by the second base body (63), and that preferably the assembly (1) with a

The end extends as far as a wall (48) of the second base body (63) that defines the media outlet (50) in one piece, and the other end has a slim projection (68) for opening one provided in the piston (73)

Forms closure (75) of the media store (71).

10. Dispenser according to one of the preceding claims, characterized in that the dispenser for storage and for

Discharge of biological or similar active substances is designed such that in particular the dispenser is designed to discharge physiological active substances, such as hormone-containing active substances, and that the dispenser is preferably intended for the discharge of active substances, such as peptides, which contain protein breakdown products.

11. Method for producing a dispenser for media with a structural unit (1) from components (2, 3) aligned in at least one operating position, namely a first component (2) and a second component (3), in which the structural unit (1 ), in particular from injection molding in a common manufacturing mold, and after the demolding of at least one of the components (2, 3) the two components are moved towards one another and are connected essentially directly to one another, characterized in that the components (2, 3 ) in a substantially axially parallel adjacent position in the same manufacturing form or the like. formed and then moved against each other for mutual joining transverse to their axes (10, 11).