EP2299037A1 - Dispositif mécanique interconnectée pour coupler avec un corp creux - Google Patents

Dispositif mécanique interconnectée pour coupler avec un corp creux Download PDF

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Publication number
EP2299037A1
EP2299037A1 EP10176654A EP10176654A EP2299037A1 EP 2299037 A1 EP2299037 A1 EP 2299037A1 EP 10176654 A EP10176654 A EP 10176654A EP 10176654 A EP10176654 A EP 10176654A EP 2299037 A1 EP2299037 A1 EP 2299037A1
Authority
EP
European Patent Office
Prior art keywords
retaining element
stem
seating
edge
cavity
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.)
Withdrawn
Application number
EP10176654A
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German (de)
English (en)
Inventor
Bruno Zanoni
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ARAN Srl
Original Assignee
ARAN Srl
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Filing date
Publication date
Application filed by ARAN Srl filed Critical ARAN Srl
Publication of EP2299037A1 publication Critical patent/EP2299037A1/fr
Withdrawn legal-status Critical Current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
    • E05B3/04—Fastening the knob or the handle shank to the spindle by screws, springs or snap bolts

Definitions

  • the present invention relates to a mechanical interconnecting device for coupling with a hollow body.
  • the invention is applicable for example in realising a mechanical interconnecting and/or fixing device for mounting handles on doors.
  • handles for doors are generally mounted on respective stems by inserting the stems in interconnecting openings afforded on a body of the handles and fixing the handles on the stems by means of fastening worm screws which are inserted and screwed in respective holes realised on the handle body.
  • the worm screw is thus screwed up to constraining the stem internally of the handle body, possibly at a housing seating afforded on the stem, thus fastening handle and stem.
  • the known devices exhibit some drawbacks, in particular in relation to the laboriousness of the mounting and/or demounting operations of the handles on relative stems.
  • To constrain or deconstrain the handle from the relative stem the operator has to insert the stem in the coupling opening and then screw the worm screw, which is small, up to obtaining a correct handle mounting.
  • the mounting operation is therefore laborious and requires times that while not long in a case of a single handle becomes relevant if we consider that often numerous handles are mounted contemporaneously on the doors of new buildings or in a case of replacement thereof.
  • the length of the portion of stem to be inserted in the handle body which guarantees a correct interconnection of stem and handle, is fixed by the position of the housing seating of the screw.
  • the technical task at the basis of the present invention is to make available a mechanical interconnecting device with a hollow element which can obviate one or more of the above-cited drawbacks.
  • one of the aims of the present invention in one or more of its various aspects is to realise a mechanical interconnecting device which is usable for mounting a handle for doors.
  • One of the possible aims of the present invention in one or more of its various aspects is to provide a mechanical interconnecting device able to considerably accelerate and simplify the mounting and/or demounting operations of the handles to doors (and/or in general hollow elements).
  • a possible aim of the present invention in one or more of its various aspects is to make available a mechanical interconnecting device which is usable with any handle and/or hollow element.
  • a further possible aim of the present invention in one or more of its various aspects is to provide a mechanical interconnecting device which is usable with handles having a coupling cavity exhibiting different depth.
  • a further possible aim of the present invention in one or more of its various aspects is that it makes available a mechanical interconnecting device which is more reliable and/or subject less to mechanical wear phenomena and/or requires little or no maintenance.
  • a further possible aim of the present invention in one or more of its various aspects is to make available a mechanical interconnecting device which is of simple and/or economical design and/or realisation and/or installation and/or configuration and/or operation and/or maintenance and/or storage and/or transport and/or elimination.
  • the invention relates to a mechanical interconnecting device with a hollow element having a cavity, the device comprising a stem having a prevalent longitudinal development axis and provided with a first end destined to be inserted in and extracted from the cavity along a sliding direction parallel to the longitudinal development axis, the first end comprising a seating having an opening at an external surface of the first end, the device further comprising a retaining element having a predetermined perimeter edge and housed at least partly in the seating, where the seating is configured such as to enable a displacement of the retaining element at least between a first operating position in which the retaining element is arranged such as to enable sliding of the stem into the cavity of the hollow element along the sliding direction and at least a second operating position in which at least a portion of the edge of the retaining element abuts on an internal surface of the cavity and a lower end of the retaining element abuts on a bottom surface of the seating in order to prevent extraction of the stem from the element.
  • the seating is afforded in a terminal portion of the first end.
  • the seating is configured such as to enable displacement of the retaining element into a third decoupled position which is distinct from the first two.
  • the retaining element is arranged such that a portion of the edge thereof exits from the stem area.
  • the portion of the retaining element which exits from the stem area is greater in the third decoupled position than in the first two operating positions.
  • the seating has a front rest surface, a rear rest surface, facing and retracted with respect to the front surface in an insertion direction along the sliding direction, and a bottom surface interposed between the front surface and the rear surface.
  • the rear surface of the seating can advantageously be parallel to the front surface.
  • the front surface of the seating has an upper edge in common with the external surface of the stem and a lower edge, for example in common with the bottom surface.
  • the distance between the front surface and the rear surface is greater than or equal to about 1.5 times the longitudinal thickness of the retaining element, preferably greater than or equal to twice the thickness. In an aspect, the distance is smaller than or equal to 3.5 times the longitudinal thickness of the retaining element, preferably less than or equal to about 3 times the thickness.
  • the front surface has a dimension, from the upper edge to the lower edge, which is greater than or equal to about once the distance between the front and rear surface, preferably greater than or equal to 1.5 times. In an aspect, the front surface has the dimension that is smaller than or equal to about 3 times the distance between the front and rear surface, preferably less than or equal to twice.
  • the bottom surface of the seating has a front edge, for example in common with the front edge and/or a rear edge, for example in common with the rear surface.
  • the front and/or rear surface of the seating is inclined to an angle comprised between 4° and 15°, and preferably between 5° and 9°, with respect to an orthogonal plane arranged perpendicular to the longitudinal development axis and with the upper edge more retracted from the lower edge with respect to a terminal surface of the first end of the stem.
  • front surface of the seating, and/or the rear surface and/or the bottom surface is substantially flat.
  • the seating is orientated in such a way that there exists at least a straight line lying on the front surface and/or a straight line lying on the rear surface and/or a straight line lying on the bottom surface, perpendicular to the sliding direction.
  • the bottom surface of the seating forms, with the front surface, an angle comprised between 95° and 105°.
  • the retaining element has a substantially plate-shaped conformation which preferably exhibits a quadrangular plan.
  • the retaining element is provided with an upper end at the seating opening, and a lower end, opposite the upper end, at the bottom surface of the seating.
  • the edge portion belongs to the upper end.
  • the retaining element has a front surface facing towards the front surface of the seating and a rear surface facing toward the rear surface of the seating.
  • the retaining element has an upper surface which is substantially perpendicular to the above-cited front surface and rear surface and connecting the front and rear surfaces at the upper end (e.g. at the edge portion of the retaining element destined to abut against the internal surface).
  • the upper surface is typically facing towards the outside of the stem.
  • the upper end of the retaining element is provided with a first edge, for example in common between the front and upper surfaces of the retaining element, facing towards the terminal surface of the first stem end.
  • the lower end of the retaining element is provided with a second edge facing towards the terminal surface of the first end of the stem.
  • the second edge can coincide with a lower edge of the front surface, for example coinciding with an edge of a lower surface.
  • the device further comprises an elastic element, typically housed in the stem, interposed between the retaining element and the stem in order to maintain the retaining element pushing in the sliding direction and in the same direction as the sliding direction (or towards the front surface of the seating).
  • the elastic element is preferably abutting the front or rear surface of the retaining element, preferably at the lower end.
  • the elastic element is a compression spring (e.g. arranged upstream of the retaining element with respect to the insertion direction) or a traction spring (e.g. arranged downstream of the retaining element with respect to the insertion direction).
  • the retaining element when in the first operating position, has the upper end (e.g. the front surface or first edge) in contact with the front surface (e.g. the upper edge of the front surface) of the seating and with the lower end (e.g. the second edge) in contact with the bottom surface of the seating e.g. along a contact segment of the bottom surface arranged between the front and rear edges of the bottom surface at a certain distance from each edge.
  • the upper end e.g. the front surface or first edge
  • the lower end e.g. the second edge
  • the retaining element in the first operating position is preferably arranged in such a way as to form an angle comprised between -5° and +5° with respect to the perpendicular plane, the retaining element being preferably substantially perpendicular to the sliding direction.
  • the upper surface (or at least a portion of the upper surface) of the retaining element abuts against the internal surface of the cavity, when the stem is inserted in the cavity, and the two opposite edges of the upper surface are orientated with respect to the internal surface in such a way as to enable dragging contact of the upper surface against the internal surface and thus the sliding of the stem internally of the cavity.
  • neither of the two edges exerts a shear action against the internal surface.
  • the retaining element is maintained in the first operating position, for example during extraction of the stem from the cavity, by the thrust exerted thereon by the elastic element, and the constraining reaction by the front surface (e.g. at the upper edge) on the upper end (e.g. on the front surface) of the retaining element and the constraining reaction by the bottom surface (e.g. at the contact segment of the bottom surface) on the lower end (e.g. on the second edge) of the retaining element.
  • the retaining element is also subjected to the constraining reaction of the internal surface of the cavity at the upper surface.
  • the retaining element when in the second operating position, is obliquely inclined (for example it forms an angle which is greater than or equal to +5°, preferably +7° and/or less than or equal to +20°, preferably +15%) with respect to the orthogonal plane, and the upper end (e.g. the first edge) of the retaining element is in contact with the internal surface of the cavity of the hollow element, when present, and the lower end (e.g. the second edge) of the retaining element is in contact with the bottom surface (e.g. along the front edge of the bottom surface).
  • the first edge is further than the second edge from the terminal surface of the first end.
  • the retaining element when in the second operating position, is destined to enable a progressive insertion of the stem internally of the cavity of the hollow element along an insertion direction and is destined to prevent extraction of the stem from the cavity along an extraction direction.
  • the retaining element in the second operating position is destined to interpose with all its length between the internal surface of the cavity and the bottom surface of the seating, such that a force applied to the stem for extraction thereof generates a torque force acting on the retaining element and such that the retaining element is subjected to mechanical constraints by the seating and the internal surface which prevent it from rotating following application of the above-mentioned torque force.
  • the retaining element in the second operating position is inclined by an angle which is such as to determine a shear action, by the first edge of the upper end, acting on the internal surface of the cavity of the hollow element and destined, e.g. when the stem is subjected to an insertion or extraction force or by effect of the thrust of the elastic element, to generate a constraining reaction on the retaining element by the internal surface.
  • the retaining element is maintained in the second operating position when the stem is subjected to an extraction force from the cavity, as a consequence of a constraining reaction of the internal surface of the cavity on the first edge, the thrust exerted thereon by the elastic element and the constraining reaction of the bottom surface (e.g. along the front edge of the bottom surface) on the second edge of the retaining element.
  • the composition of these forces results in a torque force that would tend to rotate the element (e.g. about the contact segment of the bottom surface), in the direction which corresponds to the nearing of the first edge to the terminal surface of the first end of the stem.
  • This rotation is not enabled when the retaining element is in the second operating position (with the stem inserted in the cavity) given the blocking of the first edge against the internal surface and the blocking of the second edge on the bottom surface, and thus the impossibility that the retaining element can occupy a more rotated position in the direction that corresponds to the nearing of the first edge to the terminal surface.
  • the snagging of the retaining element in this condition determines, consequent to a force on the stem in the extraction direction, an unloading of the forces on the structure of the retaining element, which is subjected to a compression and flexion stress.
  • the retaining element is maintained in the second operating position when the stem is subjected to a force in the insertion direction of the stem into the cavity, as a consequence of the constraining reaction of the internal surface of the cavity on the first edge, the thrust exerted thereon by the elastic element and the constraining reaction of the bottom surface (e.g. along the front edge of the bottom surface) on the second edge of the retaining element.
  • the constraining reaction of the internal surface on the first edge is directed into the opposite semi-space, with respect to the orthogonal plane, to that in which the terminal surface of the first end of the stem and the second edge is blocked striking on the bottom surface of the seating by effect of the thrust generated by the elastic element.
  • the composition of the above forces results in a torque force which tends to rotate the element about the contact segment of the bottom surface, in the direction to which corresponds the distancing of the first edge with respect to the terminal surface of the first end of the stem.
  • This rotation determines an elastic response of the elastic element and a slight retraction, in the seating, of the upper end of the retaining element from the front surface the retaining element being thus able to drag, at the first edge, on the internal surface of the cavity during insertion of the stem.
  • the second operating position in which the stem is subjected to a force in the insertion direction, is slightly different from the above-described second operating position in which the stem is subjected to a force in the extraction direction.
  • the retaining element is slightly rotated with respect to the second operating position in which the stem is subjected to a force in the extraction direction, such that the first edge is slightly more retracted with respect to the terminal surface of the first end.
  • the dragging of the retaining element on the internal surface is enabled by the fact that the elastic thrust of the spring is smaller than the thrust on the stem during insertion.
  • the size and/or pre-load of the spring determines the force necessary for insertion of the stem into the cavity.
  • the retaining element when in the third decoupled position, is arranged, in consequence of the thrust external thereon by the elastic element, with the front surface thereof resting (e.g. in contact with) on the front surface of the seating.
  • the lower end of the retaining element e.g. the second edge
  • the bottom surface e.g. along the front edge of the bottom surface.
  • the retaining element in the third decoupled position exits more from the stem area with respect to the dimension of the opening of the cavity (on the perpendicular plane) into which the stem is inserted.
  • the retaining element is pushed by the edge of the cavity of the hollow element at the portion of edge which exits and is taken from the third decoupled position to the second operating position e.g. via rotation about the second edge.
  • the device further comprises unhooking means, preferably housed in the stem, destined to exert a push on the retaining element in order to displace it from the second to the first operating position.
  • the stem is provided with an activating opening destined to enable activation of the unhooking means housed in the stem, and the activating opening is afforded in a portion of the first end of the stem opposite the opening of the seating on the external surface of the stem.
  • the stem is provided with a through-cut at the lower edge of the front surface (i.e. the front edge of the bottom surface) and the cut enables the retaining element to be placed in contact with the unhooking means.
  • the unhooking means comprise a lever (e.g. a third-type lever), typically arranged parallel to the sliding direction, comprised in the area of the stem, and the lever is mobile, by effect of an external unhooking thrust, at least between a first rest position, in which the lever does not exert a thrust on the retaining element, and an unhooked position, rotated with respect to the rest position, in which the lever exerts a thrust on the retaining element, at least when the retaining element is in the second position.
  • the movement of the lever preferably occurs in a perpendicular plane to the orthogonal plane.
  • the stem comprises a hole (having an axis lying on a parallel plane to the orthogonal plane of the stem) destined to house a first end of the lever which acts as a fulcrum in the rotary movement of the lever.
  • the lever further has a second end, longitudinally opposite the first end, destined to enter into contact with the retaining element (e.g. through the cut) and able to determine, when the lever is in the unhooked position, a displacement thereof from the second operating position to the first operating position.
  • the second end of the lever acts, when in the unhooked position, on the lower end of the retaining element and opposes the forces, exerted by the elastic element and the internal surface of the cavity of the hollow element on the retaining element, which maintain the retaining element in the second operating position, determining passage of the retaining element into the first operating position.
  • the second end of the lever exhibits an inclined portion with respect to the orthogonal plane and the sliding direction, destined to enter into contact with the second edge of the retaining element in order to push it distancingly from the lower edge of the front surface of the seating.
  • the thrust of the lever destined to determine the passage of the lever from the rest position to the unhooked position, is a manual thrust and/or is effected by means of a mechanical tool.
  • the thrust on the lever is directed along the orthogonal plane of the stem.
  • the thrust exerted by the elastic element on the retaining element in contact with the second end of the lever in the cut maintains the lever in the rest position, or determines the passage of the lever from the unhooked position to the rest position when there is not an external unhooking thrust.
  • the invention relates to an assembly comprising an interconnecting device, as in any one of the claims and/or the aspects cited above and/or any combination thereof, and the hollow element.
  • the hollow element comprises an unhooking opening at the activating opening of the stem, when the stem is inserted in the hollow element, the hollow element passing from the external surface to the internal surface of the cavity, such that the activating of the unhooking means is done via the opening.
  • the invention relates to an assembly comprising the above-described assemble and in which the hollow element is part of a handle for doors.
  • the invention relates to a method for mounting a handle for doors, with a device as in any one of the claims and/or the above-described aspects and/or any combination thereof, comprising steps of mounting the stem to a door, inserting the first end of the stem in a cavity of a door handle by acting on the handle in order to push the stem internally of the cavity such as to determine the passage of the retaining element from the third decoupled position to the second operating position, and preferably pushing the stem by a determined amount through the cavity of the door handle.
  • a mechanical interconnecting device with a hollow element of the present invention is denoted in its entirety by reference number 1.
  • the same reference number is retained for elements which are the same or alike in the various variant embodiments.
  • the device 1 comprises a stem 2 having a prevalent longitudinal axis 3 and provided with a first end 4 destined to be inserted into and extracted from the cavity 6 of a hollow element 5 along a sliding direction 7 which is parallel to the longitudinal development axis 3, the first end 4 comprising a seating 12 having an opening 13 at an external surface 14 of the first end 4.
  • the device 1 further comprises a retaining element 50 having a predetermined perimeter edge 11 and housed, at least partially, in the seating 12, as illustrated by way of example in figures 2 and 2a .
  • the seating 12 is configured such as to enable displacement of the retaining element 50 at least between a first operating position (illustrated in figure 3a ) in which the retaining element 50 is arranged such as to enable sliding of the stem 2 into the cavity 6 of the hollow element 5 along the sliding direction 7 and at least a second operating position (illustrated in figure 3b ) in which at least a portion of the edge 11 of the retaining element 50 abuts an internal surface 6a of the cavity 6 and a bottom surface 21 of the seating 12 in order to prevent extraction of the stem 2 from the element 5.
  • the shape of the stem section 2 and the cavity 6 complementarily-shaped thereto can preferably be any shape suitable for the objective, for example square (as in the embodiment of the figures), rectangular, circular, elliptic, triangular, polygonal, etc.
  • the seating 12 is preferably afforded in a terminal portion of the first end 4.
  • the seating 12 can advantageously be configured such as to enable displacement of the retaining element 50 into a third decoupled position (illustrated in figure 3c ), different from the first two positions.
  • the retaining element 50 is arranged such that a portion of the edge 11 exits from the stem 2 area.
  • the portion of the retaining element 50 which exits from the stem 2 area is greater in the third decoupled position than in the first two operating positions.
  • the retaining element 50 preferably has a substantially plate conformation.
  • the retaining element 50 preferably has any plan configuration suitable for the purpose, for example square (as in the embodiment of the figures), rectangular, circular, elliptic, triangular, polygonal, etc.
  • the retaining element 50 can have an overall conformation which is different from the one illustrated; for example it can be spherical, or another shape. In these cases the conformation of the seating 12 can be suitably adapted to the conformation of the retaining element.
  • the seating 12 afforded in the stem 2 has a front rest surface 20, a rear surface 22, facing and retracted with respect to the front surface 12 relative to an insertion direction 7a along the sliding direction 7, and the bottom surface 21 interposed between the front and rear surfaces.
  • These surfaces 20, 21 and 22 can advantageously be flat.
  • the front surface 20 has an upper edge 20a, in common with the external surface 14 of the stem 2, and a lower edge 20b in common with the bottom surface 21.
  • the bottom surface 21 preferably has a front edge 21 a in common with the front surface 20 and a rear edge 21 b in common with the rear surface 22.
  • the lower edge 20b of the front surface 20 preferably coincides with the front edge 21 a of the bottom surface 21.
  • the distance between the front surface 20 and the rear surface 22 is preferably 2.6 times the longitudinal thickness of the retaining element 50.
  • this thickness is about 0.9 mm and the distance is about 2.5 mm.
  • the front surface 20 of the seating 12 preferably has a dimension, from the upper edge 20a to the lower edge 20b, which is about 1.8 times the distance between the front surface 20 and the rear surface 22.
  • this dimension is about 4.5 mm.
  • the retaining element has a plate conformation with a square plan, with a base side of about 5 mm.
  • the distance between the bottom surface 21 and the opening 13 on the external surface 14 of the stem 2 is preferably greater than half the longitudinal dimension of the stem 2 along a section that is perpendicular to the longitudinal development axis 3.
  • the front surface 20 and the rear surface 22 are preferably inclined by an angle of about 7°, as shown in the figures, with respect to an orthogonal plane 70 arranged perpendicular to the longitudinal development axis 3 and with the upper edge 20a more retracted than the lower edge 20b with respect to a terminal surface 4a of the first end 4 of the stem 2.
  • This can advantageously enable obtaining a positioning of the retaining element in the first operating position, which is substantially perpendicular to the sliding direction 7, an advantageous condition for the purposes of the functioning of the device, as will more fully emerge herein below.
  • the rear surface 22 of the seating 12 can advantageously be parallel to the front surface 20.
  • the seating 12 is preferably orientated such that there exists at least a straight line lying on the front surface 20, a straight line lying on the rear surface 22 and a straight line lying on the bottom surface 21 perpendicular to the sliding direction 7.
  • the bottom surface 21 preferably forms, with the front surface 20, an angle of about 100°, as in the embodiment shown in the figures.
  • the angle advantageously increases the depth of the seating 12 progressively from the front surface 20 to the rear surface 22, and this can enable having an internal space in the seating 12, at the bottom thereof, which is useful for housing the retaining element 50 in its roto-translation during passage from the second to the first operating system, as will be more fully described herein below.
  • the lower edge 20b and the rear edge 21 b preferably lie on parallel planes with opposite surfaces of the external surface 14 of the stem 2.
  • the retaining element 50 is provided with an upper end 51, at the opening 13, and a lower end 52, opposite the upper end 51, at the bottom surface 21 of the seating 12.
  • the above-described edge portion belongs to the upper end.
  • the retaining element 50 preferably further has a front surface 53 facing towards the front surface 20 of the seating 12 and a rear surface 54 facing towards the rear surface 22.
  • the retaining element preferably has a further upper surface 55 substantially perpendicular to the front 53 and rear 54 surfaces and connecting the above-mentioned front 53 and rear 54 surfaces at the upper end 51 (e.g.
  • the upper surface 55 is typically facing towards the outside of the stem 2.
  • the upper end 51 is preferably provided with a first edge 51 a, in common between the front 53 and upper 55 surfaces, facing towards the terminal surface 4a of the first end 4 of the stem 2.
  • the lower end 52 is preferably provided with a second edge 52a facing towards the terminal surface 4a of the first end 4 of the stem 2 and coinciding with a lower edge of the front surface 53.
  • the device 1 can further advantageously comprise an elastic element 30, typically housed in the stem 2, interposed between the retaining element 50 and the stem 2 in order to keep the retaining element 50 pushing in the sliding direction 7 and in the inserting direction 7a (e.g. towards the front surface 20).
  • the elastic element can preferably be a compression spring (as in the embodiment illustrated in the figures) or a traction spring.
  • the spring can advantageously be located in a central position in the stem 2, for example along the longitudinal development axis 3.
  • the compression spring can be arranged upstream of the retaining element 50 with respect to the insertion direction 7a, and abuts on the rear surface 54 at the lower end 52.
  • the retaining element 50 is preferably arranged, when in the first operating position (illustrated in figure 3a ), with the front surface 53 in contact with the upper edge 20a of the front surface 20 of the seating 12 and with the second edge 52a in contact with the bottom surface 21, along a contact segment belonging to the bottom surface 21 and arranged at a certain distance between the front edge 21 a and the rear edge 21 b.
  • the retaining element 50 is preferably arranged substantially perpendicular to the sliding direction 7.
  • the upper surface 55 (or at least a portion thereof) of the retaining element 50 is preferably abutting against the internal surface 6a, when the stem 2 is inserted in the cavity 6,and the two opposite edges of the upper surface are orientated, with respect to the internal surface 6a, such as to enable dragging contact of the upper surface 55 against the internal surface 6a and thus the sliding of the stem 2 internally of the cavity 6.
  • neither of the two edges exerts a shear action against the internal surface.
  • the retaining element 50 is preferably maintained in the first operating position during extraction of the stem 2 from the cavity 6 in consequence of the thrust exerted thereon by the elastic element 30, the constraining reaction by the front surface (typically as in figure 3a , at the upper edge) on the upper end of the retaining element (typically on the front surface) and the constraining reaction by the bottom surface (typically at the contact segment of the bottom surface) on the lower end of the retaining element 50 (typically on the second edge).
  • the retaining element 50 is also subjected to the constraining reaction of the internal surface 6a of the cavity 6 at the upper surface 55.
  • the contact between the upper end 51 of the retaining element 50 and the internal surface 6a of the cavity 6 preferably takes place along the upper surface 55, such that the first edge does not interfere with the internal surface, enabling sliding of the stem 12 internally of the cavity 6a.
  • the retaining element 50 is preferably arranged such as not to rotate during extraction of the stem 2 from the cavity 6a of the hollow element 6, in the direction corresponding to the nearing of the first edge 51 a with respect to the terminal surface 4a of the first end 4 of the stem 2 and during the insertion in the direction corresponding to the retraction of the first edge 51a with respect to the terminal surface 4a, in consequence of the mechanical constraints determined by the abutting of at least a portion of the upper surface 55 against the internal surface 6a of the cavity 6 and/or the resting of the second edge 52a on the bottom surface 21 and/or the resting of the first edge 51 a on the front surface 20.
  • the retaining element 50 in the second operating position is preferably inclined by an angle which is such as to determine a shear action by the first edge 51 a acting on the internal surface 6a of the cavity 6 and destined e.g. when the stem 2 is subjected to an insertion or extraction force, or by effect of the thrust of the elastic element 30, to generate a constraining reaction on the retaining element 50 by the internal surface 6a.
  • the retaining element 50 is preferably maintained in the second operating position, when the stem is subjected to an extraction force from the cavity 6 in consequence of the constraining reaction of the internal surface 6a on the first edge 51 a, of the thrust exerted thereon by the elastic element 30 and the constraining reaction of the bottom surface 21 on the second edge 52a.
  • the composition of the forces results in a torque which would tend to rotate the retaining element 50, for example about the contact segment of the bottom surface 21, in the direction corresponding to the nearing of the first edge 51 a to the terminal surface 4a of the first end 4.
  • the snagging of the retaining element 50 in this condition determines, in consequence of a force on the stem in the extraction direction, an unloading of the forces on the structure of the retaining element 50, which is subjected to a compression and flexion stress.
  • the retaining element 50 is preferably maintained in the second operating position when the stem is subjected to a force in the stem 2 insertion direction into the cavity 6, in consequence of the constraining reaction of the internal surface 6a on the first edge 51a, of the thrust exerted thereon by the elastic element 30 and the constraining reaction of the bottom surface 21 on the second edge 52a.
  • the constraining reaction of the internal surface 6a on the first edge 51a is directed into the opposite semi-space, with respect to the orthogonal plane 70, to the semi-space in which the terminal surface 4a of the first end 4 of the stem 2 is situated and the second edge 52a is blocked abutting on the bottom surface 21 of the seating by effect of the thrust generated by the elastic element 30.
  • the composition of the forces in this configuration results in a torque which tends to rotate the retaining element 50 about the contact segment of the bottom surface 21, in a direction corresponding to the retracting of the first edge 51 a with respect to the terminal surface 4a of the first end 4 of the stem.
  • This rotation determines an elastic response of the elastic element 30 and a slight retraction, in the seating 12, of the upper end 51 of the retaining element 50 from the front surface 20, the retaining element 50 being thus able to drag, at the first edge 51a, on the internal surface 6a of the cavity 6 during insertion of the stem 2.
  • the dragging of the retaining element 50 on the internal surface 6a is preferably enabled due to the fact that the elastic thrust of the spring is less than the thrust on the stem 2 during insertion.
  • the size and/or preloading of the spring preferably determines the force necessary for inserting the stem in the cavity.
  • the imperceptible movement of the retaining element in the second operating position during insertion is possible only consequently of an inserting thrust of the stem which is greater than the thrust generated by the elastic element on the retaining element which maintains the first edge abutting on the internal surface.
  • the retaining element 50 is preferably arranged, when in the third decoupled position (illustrated in figure 3c ) consequently of the thrust exerted thereon by the elastic element, with the upper surface 53 in contact with the front surface 20 of the seating 12.
  • the second edge 52a is in contact with the bottom surface 21, for example along the front edge 21 a.
  • the retaining element 50 in this configuration exits from the stem area more greatly with respect to the dimension of the opening of the cavity 6 (on the perpendicular plane) in which the stem is inserted.
  • the device 1 can advantageously further comprise unhooking means 60, preferably housed in the stem 2, destined to exert a thrust on the retaining element 50 in order to displace it from the second to the first operating position.
  • the stem 2 is preferably provided with an activating opening 61 afforded in a portion of the first end 4 which is opposite the opening 13 on the external surface 14 of the stem 2 and destined to enable activation of the unhooking means 60.
  • the stem 2 is preferably further provided with a through-cut 62, illustrated in figure 1 , at the lower edge 20b and/or the front edge 21a which enables the retaining element 50 to be placed in contact with the unhooking means 60.
  • the hooking means 60 can advantageously comprise a lever 63, arranged parallel to the sliding direction 7, comprised in the stem 2 area.
  • This lever 63 is mobile, by effect of an external unhooking thrust, at least between a first rest position, in which it does not exert a thrust on the retaining element 50, and an unhooked position, rotated with respect to the rest position, in which it exerts a thrust on the retaining element 50 at least when the retaining element is in the second position.
  • the lever can be advantageously a lever of the third type. As in the embodiment illustrated in the figures, the movement of the lever 63 is performed in a perpendicular plane to the orthogonal plane 70.
  • the stem 2 preferably comprises a hole 64 (having an axis lying on a parallel plane to the orthogonal plane 70 of the stem 2) which is destined to house a first end 63a of the lever which acts as a fulcrum in the rotary movements of the lever 63.
  • the lever 63 can advantageously further have a second end 63b, longitudinally opposite the first end 63a, destined to enter into contact with the retaining element 50 (for example via the cut) and able to determine, when the lever is in the unhooked position, the displacement of the retaining element 50 from the second operating position to the first operating position.
  • the second end 63b preferably acts, when in the unhooked position, on the lower end 52 of the retaining element and opposes the forces, exerted by the elastic element 30 and the internal surface 6a of the cavity 6 on the retaining element 50, which maintain it in the second operating position, causing passage thereof into the first operating position.
  • the second end of the lever 63 has an inclined portion 66 with respect to the orthogonal plane 70 and the sliding direction 7, destined to enter into contact with the second edge 52a in order to push it distancingly from the lower edge 20b of the front surface 20 of the seating 12.
  • the thrust on the lever 63 destined to determine the passage of the lever from the rest position to the unhooked position, is preferably a manual thrust and/or it is performed by a mechanical tool.
  • the thrust on the lever 63 is preferably directed along the orthogonal plane 70 of the stem 2.
  • the decoupling of the stem 2 from the hollow element 5 preferably takes place by activating the unhooking means 60 through an unhooking opening 65 of the hollow element 5, the hollow element 5 passing from the external surface 6b to the internal surface 6a of the cavity and, when the stem 2 is inserted in the hollow element 5, being positioned at the activating opening 61.
  • the hollow element 5 of figure 1 is illustrated, for the purpose of illustration, rotated by 180° about the insertion direction 7, with respect to the configuration assumed in the functioning of the device, in order to more clearly illustrate the position of the unhooking opening 65.
  • the bottom surface 21 can exhibit a step 21 c, or change of level.
  • This step 21c can be destined for example to facilitate the maintaining of the retaining element 50 in the first operating position and/or to reduce the risk of an accidental passage into the second operating position.
  • the bottom surface 21 is sub-divided into two portions, one below the step 21 c and one above the step 21 c.
  • the portion of the bottom surface 21 below the step can be inclined like the portion above the step 21c (as illustrated in the figures), or it can be inclined with a different inclination, or it can be without inclination, i.e. it can be parallel for example to the external surface 14.
  • the retaining element 50 can be provided with a reference recess 56, which can be a through-recess or not, destined to enable housing a terminal reference portion 31 of the elastic element 30 in order to reduce the risk of undesired displacements between the elastic element 30 and the retaining element 50. This detail can be adopted in any embodiment of the invention and with any conformation of the seating 12 and the retaining element 50.
  • the retaining element 50 can have a substantially spherical conformation, and in that case the seating 12 is configured specially to enable displacement of the retaining element 50 between the first operating position and the second operating position.
  • the elastic element 30 is also arranged in an appropriate position in order to enable optimal action on the retaining element 50.
  • the inclination of the bottom surface 21 and/or the inclination of the front rest surface 20 are destined and configured such as to enable effective retaining of the sphere on the internal surface 6a of the cavity 6, in order to guarantee the action of the device 1 on the hollow element 5.
  • the inclination of the bottom surface 21 and/or the front rest surface 20 can be greater than the above-mentioned inclination in relation to the preceding embodiment of the device, such that the spherical retaining element 50 can guarantee a sufficient action on the internal surface 6a in order to prevent a relative displacement between the stem 2 and the hollow element 5.
  • the front rest surface 20 can be vertical (i.e. perpendicular to the external surface 14) or inclined (as in the figure), as explained herein above.
  • An auxiliary housing seating can also be provided, afforded on the internal surface 6a of the cavity 6 and destined to cooperate with the retaining element 50 in order to increase the action and retaining thereof on the internal surface 6a of the retaining element 50.
  • the first end 4 of the stem 2 is inserted in the cavity 6 of the hollow element 5 (for example a door handle) and pushed in the insertion direction, such that the retaining element 50 is pushed from the edge of the cavity at the edge portion 11 which exits, and is taken from the third decoupled position to the second operating position, by rotation about the second edge 52a.
  • the stem 2 is then pushed for a determined run internally of the cavity 6; during this stage the retaining element 50 remains in the second operating position and the stem slides internally of the cavity with the first edge dragging on the internal surface of the cavity.
  • the retaining element 50 When the stem 2 is inserted in the hollow element 5 to the desired length, the retaining element 50 remains in the second operating position and prevents extraction of the stem 2 from the body 4 as an extraction force exerted in an extraction direction 7b determines a snagging of the retaining element 50 in the second operating position and a consequent interference with the stem 2, which remains coupled to the hollow element 5.
  • the lever 63 In order to displace the retaining element 50 towards the first operative position and thus free the stem 2 from the snagging of the retaining element 50, so that it can be extracted from the cavity 6.
  • the thrust on the lever 63 is done at the second end 63b, causing a movement of the end towards the inside of the stem and consequently, by effect of the push on the second edge 52a by the inclined portion 66, the displacement of the retaining element 50 in the second operating position.
  • the present invention attains the set aims, obviating the drawbacks of the prior art. Firstly, as specified herein above, the mechanical interconnection of a stem with a hollow element is done following a simple push of the stem into the cavity and is thus rapid and simple. Consequently the mounting operations can be particularly rapid.
  • the device can enable easy assembly of a handle for doors. Further, the removal of the handle can also be very simple and rapid. Further, the device of the present invention can be usable with handles provided with a coupling cavity having a different depth. Further, the device can be usable with any handle. Further, the mechanical interconnecting device can be more reliable and/or less subject to mechanical wear phenomena and/or it will require less maintenance.
  • the mechanical interconnecting device can be simple and/or economical in terms of design and/or realisation and/or installation and/or configuration and/or operation and/or maintenance and/or storage and/or transport and/or elimination.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lock And Its Accessories (AREA)
  • Communication Cables (AREA)
  • Flexible Shafts (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
EP10176654A 2009-09-14 2010-09-14 Dispositif mécanique interconnectée pour coupler avec un corp creux Withdrawn EP2299037A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITBS2009A000168A IT1395576B1 (it) 2009-09-14 2009-09-14 Dispositivo di interconnessione meccanica con un elemento cavo

Publications (1)

Publication Number Publication Date
EP2299037A1 true EP2299037A1 (fr) 2011-03-23

Family

ID=42225081

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10176654A Withdrawn EP2299037A1 (fr) 2009-09-14 2010-09-14 Dispositif mécanique interconnectée pour coupler avec un corp creux

Country Status (2)

Country Link
EP (1) EP2299037A1 (fr)
IT (1) IT1395576B1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202019102648U1 (de) * 2019-05-10 2020-08-11 Franz Schneider Brakel Gmbh + Co Kg Drückerlagerung eines Tür- oder Fensterdrückers
US20220042346A1 (en) * 2019-09-11 2022-02-10 Carrier Corporation Hub assembly for door handle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR51961E (fr) * 1942-02-20 1943-05-27 United Carr Fastener Corp Systèmes d'attache pour boutons
FR1390750A (fr) * 1964-04-15 1965-02-26 Ft Products Ltd Ensemble formé par un arbre claveté dans un organe d'entraînement au moyen d'une attache élastique
US20050126236A1 (en) * 2003-12-11 2005-06-16 Oscar Romero Door handle spring assembly
EP1683933A2 (fr) * 2005-01-17 2006-07-26 Hoppe AG Poignée d'actionnement

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR51961E (fr) * 1942-02-20 1943-05-27 United Carr Fastener Corp Systèmes d'attache pour boutons
FR1390750A (fr) * 1964-04-15 1965-02-26 Ft Products Ltd Ensemble formé par un arbre claveté dans un organe d'entraînement au moyen d'une attache élastique
US20050126236A1 (en) * 2003-12-11 2005-06-16 Oscar Romero Door handle spring assembly
EP1683933A2 (fr) * 2005-01-17 2006-07-26 Hoppe AG Poignée d'actionnement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202019102648U1 (de) * 2019-05-10 2020-08-11 Franz Schneider Brakel Gmbh + Co Kg Drückerlagerung eines Tür- oder Fensterdrückers
US20220042346A1 (en) * 2019-09-11 2022-02-10 Carrier Corporation Hub assembly for door handle

Also Published As

Publication number Publication date
ITBS20090168A1 (it) 2011-03-15
IT1395576B1 (it) 2012-10-16

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