EP0058391A1 - Dispositif de fixation sur des pièces de garnissage ou d'installation pouvant être reliées l'une à l'autre de manière amovible et procédé pour la fabrication d'un tel dispositif - Google Patents

Dispositif de fixation sur des pièces de garnissage ou d'installation pouvant être reliées l'une à l'autre de manière amovible et procédé pour la fabrication d'un tel dispositif Download PDF

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Publication number
EP0058391A1
EP0058391A1 EP19820101005 EP82101005A EP0058391A1 EP 0058391 A1 EP0058391 A1 EP 0058391A1 EP 19820101005 EP19820101005 EP 19820101005 EP 82101005 A EP82101005 A EP 82101005A EP 0058391 A1 EP0058391 A1 EP 0058391A1
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EP
European Patent Office
Prior art keywords
section
receiving opening
fastening device
bore
transverse bore
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19820101005
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German (de)
English (en)
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EP0058391B1 (fr
Inventor
Rudolf Dipl.-Wirtsch.-Ing. Wilke
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Individual
Original Assignee
Individual
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Filing date
Publication date
Priority claimed from DE3105217A external-priority patent/DE3105217C2/de
Priority claimed from DE19813105348 external-priority patent/DE3105348C2/de
Application filed by Individual filed Critical Individual
Publication of EP0058391A1 publication Critical patent/EP0058391A1/fr
Application granted granted Critical
Publication of EP0058391B1 publication Critical patent/EP0058391B1/fr
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B3/00—Fastening knobs or handles to lock or latch parts
    • E05B3/02—Fastening knobs or handles to the spindle by pinning or riveting

Definitions

  • the invention relates to a device of the type defined in the preamble of claim 1 and a method for producing the fittings or equipment parts intended for such devices and having the receiving opening.
  • fittings or equipment parts are in particular hardware parts such as handle or handle parts for doors or windows and sanitary equipment parts such as the holding arms of two-part towel holders, lower parts and cover caps of soap dishes, toothbrush holder, shelves or the like, but also the lower parts and upper parts of the Understand frame parts of letter boxes or the like. All these parts have in common that they each have a first part with a receiving opening and a second part, which either contains a segment that can be inserted into the receiving opening or from a segment that can be inserted as a whole into the receiving opening in the form of a wall or the like a lower part or the like, which is covered by a first part in the form of an upper part or the like or enclosed on all sides.
  • the fastening device is designed in such a way that the locking pin engages in the transverse bore in the connected state of the two parts and, if necessary, holds the two parts together with a positive fit. Detachment of the two parts from one another is possible in that the locking pin is pressed out of the transverse bore by means of a tool inserted from the outside.
  • the invention is therefore based on the object of providing a suitable anti-theft device for the fastening device described at the outset and also proposing a method for producing such an anti-theft device.
  • the transverse bore which enables access to the locking pin has an outer section with a cross section which is substantially smaller than the large outer cross section of the locking pin itself, which is required for stable fastening
  • the two parts can only be made using a special tool, e.g. be separated from each other by means of a steel pin with a correspondingly small diameter and only by persons to whom the fastening mechanism and the position of the outer section of the transverse bore, which can often be concealed due to its small cross section, are known.
  • Such an anti-theft device is not only sufficient for most applications, but is also extremely inexpensive to manufacture.
  • the production of the transverse bore using the method according to the invention on injection molded parts also has the advantage that no complex work steps and tools are required during the injection molding process.
  • two core halves would have to be inserted into the receiving opening during the spraying process, one of which is the one Has inner section of the cross hole corresponding projection, un a. after the spraying process, one smooth core half and then the second core half having the projection would have to be pulled out of the receiving opening.
  • corresponding guides in the core halves and / or for moving the molded parts would be required, which is not only technically complex, but also not feasible in the case of receiving openings with small cross sections, as are required, for example, on lever handle parts or push handles, due to tight tolerances and other problems is.
  • the receiving opening only needs to be filled with a core corresponding to its shape during the spraying process, which considerably simplifies the spraying process.
  • the locking pin is not already pressed, e.g. By means of a hair or paper clip, can be pressed out of the cross hole, in a further development of the invention it is provided to brace the two fittings or fittings by at least one spring element in such a way that the locking pin with a clamp fit is arranged in the cross hole.
  • This has the advantage that a sufficiently tight fit of the locking pin can be achieved even if the spring pressing the locking pin into the transverse bore has to be made relatively small in accordance with the usually very limited spatial conditions.
  • FIG. 1 shows a fastening device according to the invention on a pair of door handles which has a first handle part 1 with a receiving opening 2 and a second handle part assigned to it, of which only one segment in the form of a handle mandrel 3 is shown in FIG. 1, which is connected in some way to the pusher part, not shown.
  • the pusher mandrel 3 has a square cross section and can be inserted into the receiving opening 2 with a corresponding cross section with close tolerance.
  • the presser mandrel 3 For releasable attachment of the presser mandrel 3 to the presser part 1, the latter has a locking pin 4 at its free end, which is slidably mounted in the presser mandrel 3 and with one end projects into an opening 5 of the presser mandrel 3, in which a compression spring 6 is also mounted, which tries to push the locking pin 4 outwards.
  • the end of the locking pin 4, which protrudes into the opening 5, has a cross-sectional widening which is completely removed pulling the locking pin out of the arbor 3 prevents.
  • the length of the opening 5 and the length of the part of the locking pin 4 projecting outwards from the surface of the presser mandrel 3 in the normal position according to FIG. 1 are dimensioned such that the locking pin 4 is pressed so far into the opening 5 against the pressure of the compression spring 6 can be that its outer end is flush with the surface of the press mandrel 3.
  • the handle part 1 has in its grip, the axis of which is substantially horizontal in FIG. 1, a steel insert 8, to which a sleeve-like filler 10 is welded along a weld seam 9, which sleeve encloses the receiving opening 2 or cup-like.
  • the filler 10 has a transverse bore 12 running perpendicular to its axis 11 and parallel to the axis of the handle, which has an inner section 14 bordering the receiving opening 2 with a cross section corresponding to the outer cross section of the locking pin 4 and one to the Has inner section and the outer surface of the pusher part 1 bordering outer section 15 with a significantly smaller cross section than the inner section 14.
  • the pusher mandrel 3 is arranged with respect to the receiving opening 2 such that the locking pin 4 engages in the inner section 14 after the pusher mandrel 3 has been inserted, thereby connecting the two pusher parts to one another without play.
  • a release of this connection is possible in that a steel pin with a small diameter is inserted from the outside into the outer section 15 of the transverse bore 12 and pressed in until the locking pin 4 has emerged from the inner section 14 and, as a result, the presser pin 3 from the Receiving opening 2 can be pulled out.
  • the filler 10 and the steel insert 8 are encapsulated on all sides with a jacket 16 made of plastic.
  • the procedure according to the invention is as follows.
  • the filler 10 is first produced and welded to the steel insert 8, if one is provided.
  • a bore 17 running perpendicular to the axis 11 is formed in the filler piece, which completely penetrates the wall section of the filler piece 10 opposite the transverse bore 12 in FIG. 3, in the wall section of the filler piece 10 on the right, in FIG. 3, on the other hand forms only a blind bore, which is open in accordance with FIGS.
  • the filler 10 and the steel insert are now, as shown schematically in FIG. 3, placed in an injection mold 1R, and the free end of the receiving opening 2 is plugged onto a core 19 of a corresponding cross section, which holds the filler and at the same time the receiving opening 2 and covers the bore 17. Then the filler 10 and the steel insert 8 are encapsulated with liquid plastic, which penetrates into the mold cavity 20 of the mold 18 and consequently also from the outside into the bore 17.
  • the inner section 14 of the transverse bore 12 remains free of plastic, since on the one hand the receiving opening 2 is filled and on the other hand the inner section 14 is closed at the rear end by the thin wall section 21.
  • the outer section 15 of the transverse bore 12 is finally produced by drilling through the wall section of the jacket 16 obtained during the spraying and the wall section 21 from the outside.
  • the transverse bore 12 / is not, as would be customary per se, on the lower side of the handle part 1 during assembly on the door, but in a central section near the inner arch.
  • FIG. 4 shows a pusher part 22 in a position rotated by 90 ° compared to FIG. 1.
  • the pusher part 22 has a receiving opening 2, a filling piece 10 and a plastic jacket 16.
  • the axis of an inner section 23 of the outer bore is arranged both perpendicular to the axis 11 of the receiving bore 2 and perpendicular to the axis 24 of a handle part of the handle part 22.
  • a plug 26 which is made of metal or another material which does not connect to the plastic to be encapsulated is inserted into the bore 25 corresponding to the bore 17 according to FIG. 3, so that the bore 25 is not filled with plastic can be.
  • the outer section of the transverse bore can either be made from the right, as in FIG. 3, in which case the inner section 23 and the subsequently attached outer section form the transverse bore. Or the outer section is drilled from the left in FIG. 4 through the wall section opposite the bore 25 until the bore 25 is reached and the plug 26 can be knocked inward and removed through the bore thus created.
  • the cross bore cooperating with the locking pin 4 consists of the bore 25 forming the inner section and the subsequently drilled outer section. The subsequent attachment of the outer section thus takes place in this embodiment depending on the type of door for which the handle part 22 is to be used.
  • the fastening device described can be used analogously to the connection of fitting parts in the form of push handles 27, 28 for a door 29, in particular a glass door (FIG. 5).
  • the first push handle 27 has a sleeve-like or cup-like filler 30 with a receiving opening 31, which is surrounded by a sprayed-on plastic jacket 32 and an annular groove 33 at the end facing away from the door which prevents the jacket 32 from being removed from the filler 30.
  • the push handle 27 is provided with a transverse bore 34 which has an inner section 35 with a comparatively large and an outer section 36 with a comparatively small inner cross section.
  • the inner section 35 is formed in the wall of the filler 30 in the manner of a blind bore.
  • the second push handle 28 contains a sleeve or cup-shaped filler 37, which is surrounded by a sprayed-on plastic jacket 38 and has an annular groove 39 at the end facing away from the door 29, which prevents the jacket 38 from being pulled off the filler 37 .
  • a fastening screw 40 is screwed into the filler 37 from the other side of the door, which has a threaded section arranged in the filler 37 and a thread-free section 41 which projects through the door 29 and a centering sleeve 42 inserted into its bore in the assembled state of the push handle 28 Hexagon head 43 carries and is extended beyond this.
  • a locking pin 44 is mounted, which corresponds to the locking pin 4 according to FIG. 1 and, in the assembled state, engages in the inner section 35 of the transverse bore 34.
  • the assembly of the two push handles 27 and 28 begins with the push handle 28 being attached to the door 29 in the manner shown in FIG. 5. Then the fastening screw 40 is screwed on from the other side of the door until there is a tight fit of the pull handle 28 and the section 41 assumes such an angular position that when the receiving opening 31 is pushed on, the locking pin 44 can snap into the inner section 35 of the transverse bore 34.
  • the threaded section 4 is the fastening screw 40 and / or the associated receiving part of the filler 37 and / or the centering sleeve 42 is sufficiently deformable and, for example, made of slightly resilient plastics.
  • the receiving opening 31 is pushed onto the section 41 until the locking pin 44 engages, so that the two push handles 27 and 28 are firmly connected to one another, but by insertion a steel pin or the like in the outer portion 36 of the transverse bore 34 can be separated again.
  • Checking the correct angular position of section 41 includes possible in that the receiving opening 31 is widened at its outer end to a hexagon hole, which only fits when the section 41 is in the correct position on the hexagon head 43.
  • the first arm 46 has a receiving opening 4R which is surrounded by a filler 49 in the form of a hollow cylindrical sleeve which is fastened in a central bore 50 of one end of the arm 46 and a section which projects outwardly beyond this end which is rotatably arranged in a coaxial bore of a lower part 51.
  • the lower part 51 is fastened to a wall or the like by means of screws 52 projecting through screw holes and covered with a cover cap 53 which has corresponding bores for receiving the filler 49.
  • the end of the second arm 47 facing the first arm 46 has a central bore 54, into which a cylindrical mandrel 55 is inserted, which has a section which projects beyond the end of the arm 47 and which represents a segment which can be inserted rotatably into the receiving opening 48 its outer end carries a locking pin 56 corresponding to the locking pin 4 of FIG. 1.
  • this locking pin 56 engages behind the rear edge of the filler 49 located in the arm 46 in a free space 57, which extends at this point by slightly beyond the rear edge te central bore 50 of the arm 46 is formed and represents an inner portion of a transverse bore arranged transversely to the axis of the receiving opening 48.
  • the wall of the arm 46 opposite the locking pin 56 has a bore 58 with a small cross-section in comparison to the locking pin 56, which together with the free space 57 Cross-section must at least correspond to the cross-section of the locking pin 56, forms an outer bore which corresponds to the transverse bore 12 according to FIG. 1.
  • the inner section of the outer bore can be produced with simple means and no complex measures are required when the arm 46 is injection molded.
  • the lower part has a length of the locking pin 56 according to FIG. 6 adapted longitudinal groove 72.
  • the lower part 59 has a rectangular cross-section, a similar central opening 61 and screw holes 62 for fastening to a wall or door.
  • the upper part 60 consists of a cap-like component which has a top wall 63 covering the bottom part 59 with a rectangular central opening 64 and a side wall 65 which runs all around at the outer edge of the top wall 63 and is arranged perpendicular thereto.
  • the dimensions of the space bounded by the side wall correspond essentially to the outer dimensions of the lower part 59, so that the upper part 60 sits on the lower part largely without play.
  • the lower part has undercuts 66 on its upper edge in FIG. 7 on that cooperate with corresponding undercuts b7 on the side wall 65 of the upper part.
  • transverse bores 6A are formed in the form of elongated holes in the lower section of the side wall 65, to which locking pins 69 which are displaceably mounted and resiliently pushable in the manner of the locking pins 4 (FIG. 1) are assigned at corresponding locations on the lower part. 1 to 6, in the embodiment according to FIGS. 7 and 8, the entire lower part 59 can be inserted into the receiving opening of the upper part formed by the side wall 65.
  • the locking pins 69 engage in the outer bores 68 after the upper part 60 has been placed on the lower part 59.
  • the inner sections 70 of the elongated holes bordering the receiving opening are simultaneously formed as blind holes, while adjacent outer sections 71 of the elongated holes and extending to the outer surface of the side wall 65 have a much smaller cross-section than the inner sections 70, so that the outer bores 68, as in the previously described embodiments, consist of relatively large, the locking pins 69 receiving inner sections 70 and relatively small, hidden attachable and accessible only with a special tool outer sections 71.
  • the lower part 59 and the upper part 60 can form, for example, the front frame of a letter slot, which can be exposed to strong temperature fluctuations.
  • the inventive arrangement of the locking pins 69 in elongated holes 68 and the correspondingly arranged undercuts 66, 67 enable relative movements between the upper part and the lower part as a result of temperature fluctuations and the resulting expansion or contraction, in particular of the upper part 60.
  • the invention is not restricted to the exemplary embodiments described, which can be modified in various ways.
  • the embodiments according to FIGS. 1 to 5 it is also possible to first produce the plastic sheath 16 or 38 of the fittings or fittings using the injection molding process and then, analogously to FIG. 6, the filler pieces 10 and 30 subsequently in the finished sheath insert and glue, screw or otherwise secure.
  • This has the advantage that no blind bores need to be provided in the filler since the bores can pass through and that the outer sections of the transverse bores can be formed in the outer plastic jacket of the parts during the spraying process, i.e. do not need to be drilled.
  • simple injection molds can be used.
  • filler pieces made of metal or steel so that the function is retained even in the event of a fire, which is particularly important when the fittings according to the invention are used on fire protection doors.
  • a cap placed on the bore 25 can be provided, which only needs to be drilled through after the filling piece 10 has been encapsulated.
  • the locking pin is pressed into the transverse bore by a small compression spring 6.
  • the spring force of this compression spring 6 cannot be chosen arbitrarily large due to the mostly narrow spatial conditions, the locking pin can often be pushed back with little force, so that the anti-theft device caused by the outer section 15, 36 of the transverse bore is not always considered sufficient.
  • the two fittings or fittings are braced against one another by at least one spring element in such a way that the locking pin is arranged with a clamp fit in the transverse bore after the two parts have been joined.
  • Fig. 5 shows such an additional anti-theft device by means of a coil spring 45, which is arranged in a recess on the door-side end of the first push handle 27 and one end of which is supported on the door 29, while the other end on a shoulder delimiting the recess on the end remote from the door the push handle 27 abuts.
  • the push handle 27, in order to allow the locking pin 44 to snap into the transverse bore 34 without friction, is first pressed against the door 29 during assembly and then released after the locking pin 44 has been locked in place.
  • the helical spring 45 then pushes the push handle 27 away from the door until the locking pin 44, after overcoming the slight radial play between it and the transverse bore 34, presses against the wall delimiting it. If the spring force of the coil spring 45 is dimensioned sufficiently large, the locking pin 44 can then only be pushed back with considerable effort. With knowledge of the secret, on the other hand, a small amount of force is sufficient if at the same time the push handle 27 is pressed against the door and the clamp seat of the locking pin 44 is thereby loosened.
  • each first part in each case has a receiving opening into which the second part is wholly or partly inserted
  • the first part could be provided with two or more receiving openings and a second part or two segments of a single part could be assigned to each receiving opening.
  • the upper part of a shelf, a towel holder or a toothed glass holder, for example, could be provided on its back with two receiving openings, each of which is placed on a plug-like or block-like segment attached to the wall and fastened to it by means of the fastening device according to the invention.
  • Each of these segments forms a part that is inserted as a whole into the receiving opening.
  • 9 to 24 show two such embodiments of the fastening device according to the invention using the example of a towel rail and a tooth cup holder.
  • a fitting part 75 designed as a dog towel bar extends essentially parallel to a wall 76. At both ends, the towel bar is bent in the direction perpendicular to the wall and merges there into a fastening end piece 77, which is connected via a bracket from FIG visible base 80 is screwed to the wall 76, which forms the second fitting part and is designed as a fully insertable into a receiving opening of the fastening end piece 77.
  • F i g. 10 shows as a fitting part a tooth cup holder 78 which has a circular sector-shaped inner edge for holding the tooth cup and two fastening end pieces 79 pointing perpendicular to the wall 76, which are screwed onto the wall 76 via base 80 shown in FIG. 16.
  • the bases 80 can be inserted completely into receiving openings in the attachment end pieces 79.
  • FIG. 11 The side view of the fitting parts shown in FIGS. 9 and 10 results from FIG. 11.
  • the substantially circular cylindrical base 80 has in the middle a screw hole 82 through which a fastening screw 83 with a head 84 is passed.
  • the threaded end of the screw 83 extends into a dowel 86 arranged in a bore 85 in the wall 76.
  • the flat end face 87 of the base 80 lies flat against the wall.
  • the head 84 of the screw presses against the opposite end face 88, which surrounds the screw hole 82. In this way, the base 80 is held firmly on the wall 76.
  • the base 80 On its outer surface, the base 80 has, according to the invention, a radially projecting spring 90 (or groove 91) which runs parallel to its axis 89 and which, for perfect rotational alignment between the base 80 and the fastening end piece 77 of the fitting part 75, extends into a groove running parallel to the axis 89 91 (or spring 90) engages on the inner wall of the fastening piece 77.
  • a radially projecting spring 90 (or groove 91) which runs parallel to its axis 89 and which, for perfect rotational alignment between the base 80 and the fastening end piece 77 of the fitting part 75, extends into a groove running parallel to the axis 89 91 (or spring 90) engages on the inner wall of the fastening piece 77.
  • the fastening end piece 77 is circular-cylindrical on the outside and has a circular-cylindrical receiving opening 92 on the inside, which is open towards the wall 76 and is closed on the inside according to the invention by conical inclined surfaces 93 which form an angle ⁇ of approximately 45 ° with the axis 89 of the base 80.
  • spring elements in the form of spring tabs 94 are provided, which extend from the end face 88 of the base 80 remote from the wall according to FIGS. 12 to 14 in an essentially axial direction. These are made in one piece with the base 80 and can therefore be produced together with this from a plastic injection-molded part and start from the outer edge region thereof. In a region 95, the spring tabs are at a certain distance from the inner wall of the receiving opening 92 and only come into contact with the inclined surfaces 93 with their inclined end surfaces 96.
  • each spring tab 94 has an approximately circular sector shape in cross section and extends over an angle of somewhat less than 90 °. Between the individual spring tabs 94 there are circumferential spacings 97 that allow compression.
  • the spring 90 At its end facing away from the wall, the spring 90 according to FIG. 14 has run-in bevels 99, by means of which the fitting of the fitting part 75 onto the base 80 is facilitated.
  • a transverse bore 100 is provided in the inner wall of the fastening end piece 77, in which a radially movable locking pin 101 engages.
  • this outer bore 100 is provided with an inner portion corresponding to the size of the locking pin and an outer portion with a much smaller diameter.
  • the diameter of the locking pin 101 is slightly smaller than the diameter of the inner portion of the transverse bore 100, so that when a force is exerted on the fitting part 75 from the wall, the slight play a indicated in FIG. 12 between the locking pin 101 and the edge of the transverse bore 100 results.
  • the locking pin 101 is made of plastic, for example. Fabric existing socket 102 guided radially, which in turn is housed in a correspondingly larger bore 103 in the wall of the base 80. Snap hooks 104 secure the position of the bushing 102 in the bore 103.
  • the locking pin 101 is hollow in its rear area in order to receive a helical spring 105 which biases it radially outward and which is supported on a material web 106 which is provided next to the screw hole 82 in the base 80.
  • the bore 103 for the bushing 102 ends on the inside of the material web 106, while it is open radially outwards.
  • the bushing 102 has an inwardly projecting flange 107 radially on the outside, against which an annular step 108 of the locking pin 101 bears under the action of the spring 105.
  • the bushing 102 has notches 109 on diametrically opposite sides, in which the snap hooks 104 are located on a cylindrical bushing part 110 Extend inward to screw hole 82.
  • the snap hooks 104 engage in a groove 111 (FIGS. 12, 13 and 20) which runs on both sides of the material web 106 and thus forms stop corners 112 for the snap hooks 104. Due to this design, the plastic bushing 102 with the locking pin 101 and the helical compression spring 105 used can be inserted radially from the outside into the bore 103 until the snap hooks 104 snap behind the stop corners 112. The locking pin 101 is then completely fixed in the base 80 by the action of the spring 105.
  • the outer edge surface 114 of the socket 102 is circular and flush with the outer surface of the base 80.
  • the fastening end piece 77 on the inside in the area where the locking pin 101 enters when the fitting part 75 is placed on the base 80 has a run-in slope 115, along which the locking pin 101 can slide, after which it pushes back so far inside the socket 102 until it is flush with the outer edge of the base 80.
  • the locking pin 101 can now slide along the inner wall of the fastening end piece 77 until it is aligned with the transverse bore 100, into which it then snaps due to the action of the spring 105.
  • the fitting of the fitting according to FIGS. 12 to 14 and 20 to 22 proceeds as follows:
  • the base 80 is screwed onto the wall 76 at the required distance. Then the fitting part 75 with the fastening end pieces 77 is pushed onto the base, the locking pins 101 sliding along the run-in bevels 115 and being pushed inwards with compression of the springs 105. In order to enable this return movement of the locking pins 101, a clearance A is provided between the end of each locking pin 101 and the material web 106 according to FIG. 20.
  • FIG. 15 shows a modification of the base 80 according to the invention with spiral spring tabs 94, in which thin spring steel bars 117 are embedded parallel to the axis 89.
  • the spring properties of the spring tabs 94 are improved by the spring steel rods 117.
  • the rods 117 expediently extend a little further into the actual base 80.
  • a spring steel rod 117 is preferably arranged in each of the spring tabs 94.
  • Such metal spiral spring inserts are expediently provided if the resilient properties of the base material are not sufficient to create a permanent, resilient tension. This not only has the advantage that independently of the choice of the plastic used for the base, sufficiently high spring forces can be generated or a small drop in the spring forces is guaranteed by relaxation processes. Rather, the spring steel rods are very cheap to manufacture and are protected against corrosion by the embedding.
  • the base 80 is subdivided into a base upper part 118a and a lower base part 118b which are connected to one another along a spherical cap surface 119 by certain tolerances balance.
  • the fastening end piece 79 is arranged on a toothed cup holder 78, where less space is available for the arrangement of the receiving opening 92 in the area of a rounding 120, according to the invention only two spring tabs 94 are provided on the side of the receiving opening 92 facing away from the rounding 120 each (Fig. 17) extend over a little more than 90 °. No spring tabs are provided on the side of the base 80 facing the curve 120. If necessary, shorter spring tabs could also be arranged there.
  • the bore 103 in the area of the snap hooks 104 can have radial grooves 121 and that the snap hooks 104 can have a greater radial extension than the otherwise circular bushing 102 so that they fit into the grooves 121 in a sliding fit and secure the bushing 102 against rotation and axially.
  • a ring 122 made of sheet steel with integrally formed flexible spring tabs 123 made of steel is arranged at the end of the base 80 facing away from the wall.
  • the rim 122 surrounds the end of the base 80 facing away from the wall, so that here too there is a firm connection between the spiral spring tabs 123 and the base 80.
  • the individual spring tabs 123 again extend over an angle of approximately 90 ° each.
  • the distance 97 is again between the individual spiral spring tabs.
  • the embodiment according to FIGS. 23 and 24 has the advantage that the resilient properties of the spiral spring tabs can be selected independently of the material of the base. Although it is preferred that the flexible spring tabs made of other material are firmly connected to the base, they can in principle also form a loose additional part to be attached to the base. It is also possible to arrange the sheet metal bending spring tabs formed as a coherent ring in the hollow cylindrical receiving opening of the fastening end pieces of the fitting parts such that they can be displaced a certain distance in the longitudinal direction of the fastening end pieces, but are secured against falling out of the receiving openings.
  • spiral spring tabs and inclined surfaces A kinematic reversal of the spiral spring tabs and inclined surfaces is also conceivable in such a way that the spiral springs extend from the inner end face of the receiving opening of the fastening end pieces in the direction of the base and run against inclined surfaces of the base, which are provided on the end surface of the base facing away from the wall contact surface.
  • the bending springs according to the invention have the task of moving the first fitting part away from the wall after it has been pushed onto the base and the radially displaceable locking pin has engaged until the transverse bore in the fastening end pieces is in firm axial engagement with the locking pin.
  • the flexible spring tabs are intended to prevent the first fitting part from being displaced in the direction of the wall by slight forces relative to the base after reaching this position of use.
  • the corresponding counterforce must not be too great, because otherwise the fitting part and base will be too difficult to assemble.
  • a joining force of 500 N is not too great. In general, however, is such a high joining force appropriate spring force is not required. The joining forces can therefore generally remain smaller.
  • spiral spring tabs e.g. are made of polyoxymethylene and the inclined surfaces of the fastening end pieces are made of polyamide.
  • the coefficient of friction between the sliding surfaces can reach a size of approx. 0.3 for unlubricated surfaces and approx. 0.1 for lubricated surfaces.
  • the fittings or fittings according to the invention are preferably made of thermoplastic, so that they can be manufactured economically by known injection molding processes.
  • the inclined surfaces should preferably enclose angles of 40 to 60 ° with the base axis.
  • thermoplastic used Plastics do not tend or only slightly to stress relaxation.
  • the high rigidity of such plastics also allows space-saving dimensioning of the spiral springs.
  • the plastic has a glass fiber additive at least in the area of the spring tabs.
  • the creep behavior and the rigidity of the thermoplastics used can be further improved.
  • thermoplastics are often damaged by cracking and local microscopic stretching zones.
  • the spring tabs are to be dimensioned in the manufacture from the partially crystalline thermoplastic materials mentioned so that the maximum elongation in the latched position does not exceed 1%, if possible. When using glass fiber filled thermoplastics, this elongation should be below 0.5 to 0.8% if possible.
  • the spring tabs are designed so soft that essentially the same spring forces are present in the entire suspension interval.
  • the constancy of the spring forces to be aimed at according to the invention over the spring travel interval therefore requires springs of rather low hardness, which are also deformed so much in the front end position that sufficiently high spring forces still arise in this position.
  • the spring tabs must be dimensioned accordingly.
  • the inclined surfaces of the spring tabs and the fastening end piece must be arranged so that they come into contact with each other sufficiently far before the front end position.
  • a single spring tab on each base is generally sufficient. However, several spring tabs are preferably provided.
  • the cross sections of the spring tabs are reduced at their free end to approximately half of their root cross section, the front spring sections take on a larger proportion of the spring work, and the maximum elongation is reduced by approximately 40%.
  • the cross-section is reduced by the fact that the outer spring flanks of the spring tabs form an angle with the base axis, i.e. that the free ends of the spring tabs taper towards the base axis.
  • This training gives an additional manufacturing advantage in the manufacture of the fitting part by injection molding from plastic. If, for example, the fastening ends in a towel rail are relatively thin-walled due to the recesses for the base near the wall, it is important to transfer this thin-walled area as continuously as possible into the subsequent massive part of the rod, since abrupt changes in cross-section lead to tension and also to the outside of the Can draw a rod.
  • the conical taper of the base according to the invention offers the possibility of conically narrowing the recess in the fastening ends.
  • the sloping surfaces adjoining this constriction have a correspondingly advantageous effect.
  • This production-technically advantageous design of the recess is an advantage of the base according to the invention, which would not be given, for example, if a helical spring was clamped between the base and the end face of the recess.
  • the spiral springs are preferably made as long as possible. A doubling of the spring length leads to a reduction in the maximum elongation to 50% with the same spring force and the same spring hardness.
  • the spiral spring tabs are made as wide as possible, i.e. that they should be arranged directly on the outer circumference of the base. In the case of a cylindrical base, this means that the bases have a cross section in the form of an arc segment. By doubling the width, the maximum stretch can be reduced by around 25%.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
EP19820101005 1981-02-13 1982-02-11 Dispositif de fixation sur des pièces de garnissage ou d'installation pouvant être reliées l'une à l'autre de manière amovible et procédé pour la fabrication d'un tel dispositif Expired EP0058391B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3105348 1981-02-13
DE3105217 1981-02-13
DE3105217A DE3105217C2 (de) 1981-02-13 1981-02-13 Befestigungsvorrichtung an lösbar miteinander verbindbaren Beschlag- oder Ausstattungsteilen und Verfahren zur Herstellung derselben
DE19813105348 DE3105348C2 (de) 1981-02-13 1981-02-13 An einer Wand zu befestigender Beschlag mit auf Sockeln angeorneten Befestigungsendstücken

Publications (2)

Publication Number Publication Date
EP0058391A1 true EP0058391A1 (fr) 1982-08-25
EP0058391B1 EP0058391B1 (fr) 1986-11-26

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Application Number Title Priority Date Filing Date
EP19820101005 Expired EP0058391B1 (fr) 1981-02-13 1982-02-11 Dispositif de fixation sur des pièces de garnissage ou d'installation pouvant être reliées l'une à l'autre de manière amovible et procédé pour la fabrication d'un tel dispositif

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EP (1) EP0058391B1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU579042B2 (en) * 1986-04-02 1988-11-10 Verosol B.V. Folding curtain screen structure for a triangular window
EP0568896A2 (fr) * 1992-05-05 1993-11-10 Siegenia-Frank Kg Poignée de porte ou fenêtre
EP0685618A1 (fr) * 1994-05-25 1995-12-06 Gebrüder Goldschmidt Baubeschläge Gesellschaft Mit Beschränkter Haftung Ferrure pour fenêtre ou porte
EP0692592A1 (fr) * 1994-07-14 1996-01-17 ROTO FRANK Aktiengesellschaft Levier d'actionnement
DE202022101253U1 (de) 2022-03-08 2023-06-12 Vbh Holding Gmbh Beschlag für ein Fassadenelement mit einem Mehrkantstift mit variabler Länge

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1488014A (en) * 1921-12-13 1924-03-25 Mcdonald Martin Doorknob fastening
DE1105018B (de) * 1959-04-22 1961-04-20 Koch & Sterzel Kommanditgesell Verfahren zur Herstellung einer dichten Verbindung zwischen einem Giessharzisolierkoerper und einem darin eingegossenen starken Durchfuehrungsbolzen bei einer Hochspannungsdurchfuehrung
GB998513A (en) * 1961-06-08 1965-07-14 Johanns Andreass Dombrovskis Moulding
AT244052B (de) * 1961-09-05 1965-12-10 Messwandler Bau Gmbh Gießform zur Herstellung von Formkörpern aus Gießharz
US3314118A (en) * 1964-11-10 1967-04-18 Stanworth George Moulding techniques
FR2057106A5 (en) * 1969-08-04 1971-05-21 Depis Jeanne Moulded knife handles prodn
DE2300128A1 (de) * 1973-01-03 1974-07-25 Ludwig Frohmueller Verfahren und deren vorrichtungen zur herstellung von kunststoffteilen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1488014A (en) * 1921-12-13 1924-03-25 Mcdonald Martin Doorknob fastening
DE1105018B (de) * 1959-04-22 1961-04-20 Koch & Sterzel Kommanditgesell Verfahren zur Herstellung einer dichten Verbindung zwischen einem Giessharzisolierkoerper und einem darin eingegossenen starken Durchfuehrungsbolzen bei einer Hochspannungsdurchfuehrung
GB998513A (en) * 1961-06-08 1965-07-14 Johanns Andreass Dombrovskis Moulding
AT244052B (de) * 1961-09-05 1965-12-10 Messwandler Bau Gmbh Gießform zur Herstellung von Formkörpern aus Gießharz
US3314118A (en) * 1964-11-10 1967-04-18 Stanworth George Moulding techniques
FR2057106A5 (en) * 1969-08-04 1971-05-21 Depis Jeanne Moulded knife handles prodn
DE2300128A1 (de) * 1973-01-03 1974-07-25 Ludwig Frohmueller Verfahren und deren vorrichtungen zur herstellung von kunststoffteilen

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU579042B2 (en) * 1986-04-02 1988-11-10 Verosol B.V. Folding curtain screen structure for a triangular window
EP0568896A2 (fr) * 1992-05-05 1993-11-10 Siegenia-Frank Kg Poignée de porte ou fenêtre
EP0568896A3 (fr) * 1992-05-05 1995-03-15 Siegenia Frank Kg Poignée de porte ou fenêtre.
EP0685618A1 (fr) * 1994-05-25 1995-12-06 Gebrüder Goldschmidt Baubeschläge Gesellschaft Mit Beschränkter Haftung Ferrure pour fenêtre ou porte
EP0692592A1 (fr) * 1994-07-14 1996-01-17 ROTO FRANK Aktiengesellschaft Levier d'actionnement
DE202022101253U1 (de) 2022-03-08 2023-06-12 Vbh Holding Gmbh Beschlag für ein Fassadenelement mit einem Mehrkantstift mit variabler Länge

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