WO2024251834A1 - Dispositif et procédé de fixation à serrage élastique - Google Patents
Dispositif et procédé de fixation à serrage élastique Download PDFInfo
- Publication number
- WO2024251834A1 WO2024251834A1 PCT/EP2024/065497 EP2024065497W WO2024251834A1 WO 2024251834 A1 WO2024251834 A1 WO 2024251834A1 EP 2024065497 W EP2024065497 W EP 2024065497W WO 2024251834 A1 WO2024251834 A1 WO 2024251834A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- head
- axial
- angular
- relative
- elastic element
- 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.)
- Ceased
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/06—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips
- F16B5/0607—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other
- F16B5/0621—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other in parallel relationship
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
- F16B21/02—Releasable fastening devices locking by rotation
- F16B21/04—Releasable fastening devices locking by rotation with bayonet catch
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B11/00—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding
- F16B11/006—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding by gluing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
- F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
- F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
- F16B37/06—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting
Definitions
- the invention is of particular interest, in no way limiting, for the fixing of parts forming miniaturized assemblies, for example for the fixing of an electronic card on a support.
- the invention can be implemented in many sectors, including for fixing critical components, for example aeronautical or space components.
- securing means such as lock wires or thread lock glue.
- the invention aims to resolve all or part of the aforementioned drawbacks which are associated with conventional fixing techniques.
- Said longitudinal end of the body and/or the head comprises one or more axial stop surfaces configured to prevent axial translation of the head relative to the body in a first direction, going from said first axial position towards said second axial position, beyond said second axial position when the head is in said angular locking position.
- the device is configured so that, when the head is in said second axial position and in said angular locking position, the elastic element can simultaneously exert:
- the invention makes it possible to fix parts, more particularly to keep one part pressed against another, under the action of a force exerted by the elastic element.
- the device of the invention makes it possible to fix parts by elastic clamping. Unlike a conventional fastener such as a screw, the force exerted by the elastic element is not dependent on a tightening torque or friction between the fastener and the parts of the assembly.
- the invention thus makes it possible to fix parts without the risk of loosening and without resorting to securing elements such as lock wires or thread lock glue.
- the invention also makes it possible to control the plating force exerted by the device by simple calibration of the elastic element.
- the locking of the device is ensured by the elastic element itself, which exerts a force on the head of the device opposing its unlocking.
- the device of the invention also makes it possible to absorb vibrations and deformations of the parts it fixes, particularly in the event of thermal expansion.
- the device of the invention requires few parts - in this case a body and a compression member - and can be made compact.
- the invention can be implemented in numerous applications, whether within assemblies requiring relatively large fixing forces or, on the contrary, in assemblies requiring relatively small fixing forces and/or requiring miniaturized fixing members, for example in the electronics sector.
- the dimensions and/or materials of the device can be adapted according to the tightening forces to be applied and/or environmental constraints to be respected.
- the connecting portion is further configured to be attached to said second part so as to keep the body stationary relative to the second part.
- the head is configured to be movably mounted on said longitudinal end of the body.
- the elastic element comprises first and second surfaces forming axial ends of the elastic element, and when the head is in said second axial position and in said angular locking position, the first surface of the elastic element is in contact with a surface of the head and the second surface of the elastic element is supported on a surface of the first part.
- a device allows the elastic element to exert an axial force on a surface of the first part. This improves the retention of a part pressed against another.
- said circumferential stop elements comprise one or more lugs.
- said circumferential stop elements are configured to come into contact with said axial stop surfaces under the action of said axial force exerted on the head by the elastic element.
- said longitudinal end of the body and/or the head comprise at least one recessed portion extending circumferentially opposite said circumferential stop elements when the head is in said first axial position, said recessed portion being configured to receive said circumferential stop elements when the head is, in said first axial position, moved relative to the body in rotation about the longitudinal axis.
- said hollowed out portion may form a circular groove.
- the device may be configured so that, when the head is in said first axial position, it can be moved in rotation about the longitudinal axis relative to the body between said angular locking position and an angular unlocking position in which the head is movable in axial translation relative to the body between said first axial position and a free position making it possible to eliminate said axial forces exerted by the elastic element.
- the invention thus provides a solution for ensuring rapid assembly and disassembly of the fixing device, while reducing the risks of wear resulting from multiple assembly and disassembly cycles.
- a movement of the head from one to the other of said angular locking and unlocking positions may for example correspond to a rotation having an angular value chosen in a range from K/6 rad to 5K/6 rad, preferably from TT/4 rad to 3K/4 rad, more preferably from TT/3 rad to 2K/3 rad, for example equal to /2 rad.
- a rotation of /2 rad between the locking and unlocking positions allows a quarter-turn type device to be produced.
- said longitudinal end of the body and/or the head comprise one or more surfaces configured to cooperate with said circumferential stop elements so as to guide the head in axial translation relative to the body between said first and second axial positions when the head is in said angular locking position.
- These guide surfaces can form one or more flats.
- flat refers to a flat, or substantially flat, part that is provided on a cylindrical or curved part.
- said flats can be replaced by non-planar surface parts, for example curved parts.
- said longitudinal end of the body and/or the head comprise one or more surfaces configured to cooperate with said circumferential stop elements so as to guide the head in axial translation relative to the body between said first axial position and said free position when the head is in said angular unlocking position.
- These guide surfaces can also form one or more flats.
- said longitudinal end of the body and/or the head can comprise both one or more surfaces, called first surfaces, configured to cooperate with said circumferential stop elements so as to guide the head in axial translation relative to the body between said first and second axial positions when the head is in said angular locking position and one or more surfaces, called second surfaces, configured to cooperate with said circumferential stop elements so as to guide the head in axial translation relative to the body between said first axial position and said free position when the head is in said angular unlocking position.
- first surfaces configured to cooperate with said circumferential stop elements so as to guide the head in axial translation relative to the body between said first and second axial positions when the head is in said angular locking position
- second surfaces configured to cooperate with said circumferential stop elements so as to guide the head in axial translation relative to the body between said first axial position and said free position when the head is in said angular unlocking position.
- the compression member form a female portion receiving said longitudinal end of the body when the device is in use.
- the head forms a ring extending radially outward from the longitudinal end of the body.
- the head may preferably include elements which extend radially inwardly forming one or more of said circumferential abutment elements.
- said longitudinal end of the body preferably forms one or more of said axial abutment surfaces and/or said recessed portion and/or one or more of said guide surfaces which are arranged to cooperate with this or these circumferential abutment elements in the manner described above.
- one or more of said circumferential abutment elements may be formed by the body, in which case the head preferably forms one or more of said axial abutment surfaces and/or said recessed portion and/or one or more of said guide surfaces which are arranged to cooperate with this or these circumferential abutment elements in the manner described above.
- the body comprises a shoulder configured to prevent axial translation of the head relative to the body in said second direction beyond said first axial position.
- the elastic element may comprise an elastic material such as rubber.
- the elastic element may be a separate part from the head or be formed in one piece with the head.
- the elastic element is a separate part from the head
- the elastic element and the head may optionally be secured to each other.
- the device of the invention may comprise several compression members such as that described above.
- the device may comprise two compression members such as that described above, one being configured to cooperate with said longitudinal end of the body, which forms a first longitudinal end, the other compression member being configured to cooperate in a similar manner with a second longitudinal end, opposite said first longitudinal end.
- the invention also relates to an assembly comprising a device as defined above and a tool configured to cooperate with the head of at least one compression member.
- the tool may be configured to drive the head in translation from said free position to said first axial position, then to drive it in rotation from said angular unlocking position to said angular locking position, in order to mount the device.
- the tool can be configured to be able to drive the head in translation from said second axial position to said first axial position, then to be able to drive it in rotation from said angular locking position to said angular unlocking position.
- the tool and the head may be provided with complementary shaped elements, preferably including at least one removable or retractable shaped element.
- the tool may include a connecting element such as a ball or a pin configured to be moved between a first position, in which the connecting element extends into an opening formed by the head, and a second position in which the connecting element is retracted from this opening in order to release the head.
- the tool comprises a trigger configured to place the connecting element in the second position, for example under the action of a manual force, as well as a spring configured to actuate such a trigger so as to return the connecting element to the first position.
- the invention relates to a fixing method.
- the method comprises fixing the body of a device as defined above to said second part and arranging the at least one compression member of the device in said angular locking position so as to keep the first part pressed against the second part.
- the invention can be implemented in many sectors including, but not limited to, aeronautics, automobiles, space and electronics.
- Figure 1 is a schematic perspective view of part of an assembly of two plates held pressed against each other using two fixing devices in accordance with the invention
- FIG. 2 is a schematic perspective view of a fixing device according to the invention, this device comprising a body and a compression member provided with a head and an elastic element;
- Figure 3 is a schematic perspective view of the body of the device of Figure 2;
- Figure 4 is a schematic perspective view of the head of the device of Figure 2;
- Figure 5 is a schematic top view of the head of the device of Figure 2;
- Figure 6 is a schematic longitudinal sectional view of the head of the device of Figure 2;
- Figure 7 is a schematic perspective view of the elastic element of the device of Figure 2;
- Figure 8 is a schematic perspective view of the elements of the assembly of Figure 1, in a first state
- Figure 9 is a schematic perspective view of the elements of the assembly of Figure 1, in a second state
- Figure 10 is a schematic perspective view of the elements of the assembly of Figure 1, in a third state;
- Figure 11 is a schematic perspective view of the elements of the assembly of Figure 1, in a fourth state;
- Figure 12 is a schematic perspective view of the elements of the assembly of Figure 1, in a fifth state;
- Figure 13 is a schematic perspective view of a device according to the invention, this device comprising a body and two compression members which are each provided with a head and an elastic element;
- Figure 14 is a schematic perspective view of part of a body of a device according to the invention.
- Figure 15 is a schematic perspective view of part of a body of a device according to the invention.
- Figure 16 is a schematic view in longitudinal section of a part of a device according to the invention and of a tool for mounting and dismounting this device.
- Figure 1 shows an assembly of two parts 1 and 2 in which part 1 is held pressed against part 2 using two fixing devices 3 in accordance with the invention.
- part 1 is a printed circuit, in the form of a plate
- part 2 is a support defining a flat surface 101 on which the printed circuit 1 is arranged.
- FIGS 2 to 7 show a fixing device 3 according to the invention.
- the device 3 comprises a body 4, a head 5 and a spring 6.
- the head 5 and the spring 6 together form a so-called compression member 7.
- the device 3 has a longitudinal axis A1 around which the body 4 and the compression member 7 extend, and in particular the head 5 and the spring 6.
- Figure 3 includes a reference frame, associated with body 4, defining orthogonal directions D1, D2 and D3.
- the body 4 of the device 3 is in the form of a generally cylindrical part which is elongated along the axis A1, the axis A1 being parallel to the direction D1.
- the body 4 comprises an orifice 10 passing through the body 4 from one side to the other along the axis A1 and comprises, from the bottom to the top of figure 3, a first longitudinal end 11, a collar 12 and a second longitudinal end 13.
- the end 11 and the collar 12 each have a cylindrical external surface, the external surface of the end 11 having a diameter less than the diameter of the collar 12.
- the end 13, axially opposite the end 11, comprises several stages which all fit into a fictitious cylinder (not shown) having a diameter smaller than that of the collar 12.
- the end 13 comprises in this example stages 14-17 having respective dimensions and geometries described below.
- Stages 14 and 15 each comprise a cylindrical external surface having two symmetrical flats 21 (only one flat 21 being visible in Figure 3) which extend along the axis A1, axially crossing these two stages 14 and 15 from one side to the other.
- the distance between the flats 21, in this case in the direction D2, is less than both a first diameter defined by the cylindrical parts of the stage 14 and a second diameter defined by the cylindrical parts of the stage 15, said first diameter here being less than said second diameter.
- Step 16 forms a groove, i.e. a circular groove extending around axis A1.
- the groove 16 has a diameter smaller than said second diameter of the stage 15, thus forming a shoulder 22 which axially delimits the stages 15 and 16 relative to each other.
- stage 17 comprises a cylindrical external surface having two symmetrical flats 23 which extend along the axis A1, axially crossing stage 17 from side to side.
- the distance X1 between the flats 23, in this case in the direction D2, is less than a diameter X2 defined by the cylindrical parts of the stage 17 and greater than the diameter of the groove 16.
- the diameter X2 is less than said second diameter defined by the cylindrical parts of stage 15.
- the end 13 of the body 4 comprises two other symmetrical flats 24, in the form of notches, which axially pass through the groove 16 and extend over an axial portion of length X3 of the stage 17.
- each of the notches 24 thus forms, on the one hand, a surface 25 which extends in a plane parallel to the directions D1 and D2 and, on the other hand, a surface 26 which extends in a plane parallel to the directions D2 and D3 opposite the shoulder 22.
- the distance X4 between the surfaces 25 of the notches 24, in this case in the direction D3, is here less than the diameter of the groove 16.
- the flats 23 pass through first fictitious planes (not shown) and the notches 24 pass through second fictitious planes (not shown) perpendicular to said first planes.
- each of the notches 24 is in this example offset by an angular distance of /2 rad relative to each of the flats 23, and vice versa (see figure 3).
- Stage 17 also has a surface 27 perpendicular to the axis A1 forming an axial end surface of the end 13 of the body 4.
- the head 5 of the device 3 is in this example in the form of a ring extending around the axis A1.
- Figures 4 to 6 include a reference frame, associated with head 5, defining orthogonal directions D4, D5 and D6.
- Axis A1 is parallel to direction D4.
- the head 5 comprises radially internal 30 and external 31 surfaces as well as surfaces 33 and 34 forming axial ends of the head 5, the surfaces 33 and 34 being spaced from each other by a distance X5 which defines a length of the head 5.
- the internal surface 30 delimits an orifice passing axially through the head 5 from one side to the other.
- the external surface 31 has two symmetrical flats 32 which extend over an axial portion of the head 5 so as to open onto the end surface 33.
- the head 5 comprises two lugs 35 which extend radially inwards from said internal surface 30.
- the lugs 35 are arranged symmetrically, facing one another, each of the lugs 35 forming a surface 36 which extends in a respective plane parallel to the axis A1 and to the directions D4 and D6, the surface 36 of one of the lugs 35 thus being parallel to the surface 36 of the other lug 35.
- the surfaces 36 of the lugs 35 are spaced from each other by a distance X6, in this case in the direction D5, less than the diameter of the orifice formed by the internal surface 30.
- Each of the lugs 35 also forms two surfaces 37 and 38 extending perpendicular to the axis A1 and which are spaced from each other along the axis A1 by a distance X7 defining a thickness of the lugs 35 (see figure 6).
- the surfaces 38 of the lugs 35 form part of the axial end surface 34 of the head 5.
- the spring 6 of the device 3 is in this example in the form of a ring extending around the axis A1.
- the spring 6 comprises radially internal 40 and external 41 surfaces, the internal surface 40 delimiting an orifice which passes axially through the spring 6 from one side to the other.
- the spring 6 also comprises surfaces 43 and 44 forming axial ends of the spring 6, the surfaces 43 and 44 being spaced from each other by a distance X8 along the axis A1 which defines a length of the spring 6.
- the spring e is a compression spring, that is to say configured to be able to be elastically deformed from an initial state, in particular a rest state, under the action of an axial stress causing the surfaces 43 and 44 to move closer to each other and a corresponding storage of energy and, when said axial stress is removed or below a threshold, to return to its initial state by restitution of the stored energy.
- the spring 6 of the device 3 in figure 2 has in this example an external diameter of approximately 7 mm.
- the body 4, the head 5 and the spring 6 are sized so that they can be assembled together in the manner illustrated in Figure 2.
- the spring 6 is configured to be able to be inserted on the end 13 of the body 4, so as to extend radially outside this end 13 and to be able to slide along the axis A1 on the external surface of the stage 15 of the body 4.
- the head 5 is configured to be able to be inserted on the end 13 of the body 4, so as to extend radially outside this end 13 and in particular its stage 17.
- the head 5 is placed in a first configuration in which, axially, the end surface 34 of the head 5 and the end surface 27 of the body 4 are placed end-to-end and, angularly, the lugs 35 of the head 5 are opposite the flats 23 of the stage 17 of the body 4.
- the plane D1-D2 defined by the reference frame associated with the body 4 is parallel to the plane D4-D5 defined by the reference frame associated with the head 5.
- the distance X6 between the surfaces 36 of the lugs 35 is slightly greater than the distance X1 between the flats 23 and the diameter of the orifice formed by the internal surface 30 of the head 5 is slightly greater than the diameter X2 of the stage 17 of the body 4.
- the head 5 can thus be translated along the axis A1 relative to the body 4 between said first configuration and a second configuration in which, axially, the lugs 35 are arranged at the level of the groove 16 and, angularly, the head 5 is in the same angular position as in the first configuration.
- the lugs 35 thus constitute circumferential stop elements in such axial positions.
- the flats 23 provide a translational guiding function for the head 5 between said first configuration and said second configuration.
- the axial dimension of the groove 16 is in this example slightly greater than the thickness X7 of the lugs 35, thus allowing a rotation of the head 5 about the axis A1 relative to the body 4 from said second configuration to a third configuration in which, axially, the head 5 is in the same position as in the second configuration and, angularly, the lugs 35 of the head 5 are opposite the notches 24 of the longitudinal end 13 of the body 4.
- the plane D1-D3 defined by the reference frame associated with the body 4 is parallel to the plane D4-D5 defined by the reference frame associated with the head 5.
- the distance X6 between the surfaces 36 of the lugs 35 is slightly greater than the distance X4 between the surfaces 25 of the notches 24, thus allowing a translation along the axis A1 of the head 5 relative to the body 4 between said third configuration and a fourth configuration in which, axially, the surface 37 of the lugs 35 comes to bear on the surface 26 formed by the notches 24 and, angularly, the head 5 is in the same angular position as in said third configuration.
- the lugs 35 prevent rotation of the head 5 around the axis A1 relative to the body 4, or at least limit the angular movement which may result from assembly play.
- the lugs 35 thus constitute circumferential stop elements in said fourth configuration and in axial positions of the head 5 between said third and fourth configurations.
- the notches 24 provide a translational guiding function for the head 5 between said third and fourth configurations.
- Figure 2 shows the device 3 in said fourth configuration.
- the device s is dimensioned so that, in service and in particular in the application example of figure 1, the spring e is axially compressed between the surface 34 of the head 5 of the device 3 and the part 1, so as to reduce its length X8 compared to the rest state.
- the spring 6 exerts an axial force on the head 5 in a direction S1 along the axis A1 and, simultaneously, an axial force on the part 1 in a direction S2 along the axis A1.
- end 13 of the body 4 and the compression member 7 are configured to cooperate with each other so as to allow assembly or disassembly of the device 3 in three stages.
- the device is configured to switch from the first configuration to the second configuration, then from the second configuration to the third configuration, then from the third configuration to the fourth configuration.
- the device 3 is configured to transition from the fourth configuration to the third configuration, then from the third configuration to the second configuration, then from the second configuration to the first configuration.
- the head 5 is relative to the body 4 in a first angular position, called the unlocking angular position, in which it is movable in translation along A1 between these two configurations.
- the head 5 In the first configuration, the head 5 is in an axial position called free because the head 5 and the body 4 are uncoupled.
- the head 5 is in a first axial position in which the head 5 can be moved relative to the body 4 in rotation about the axis A1 between said first angular position and a second angular position, called the locking angular position.
- the head 5 is relative to the body 4 in said second angular position, in which the head 5 is movable in translation along A1 between these two configurations.
- the head 5 is in said first axial position.
- the head 5 is in a second axial position in which the circumferential stop elements formed by the lugs 35 prevent rotation of the head 5 relative to the body 4 around the axis A1 to said angular unlocking position.
- FIGS 8 to 12 illustrate different assembly steps to achieve the configuration in Figure 1.
- the assembly comprises two fixing devices 3, one of which, located on the right of figure 1, is identical to the device 3 described above with reference to figures 2 to 7.
- the other device 3 of this assembly located on the left of figure 1, conforms to an alternative embodiment described further below.
- the body 4 of the device 3 is inserted into an opening 100 of the part 2 which comprises in this example a cylindrical orifice and a counterbore (see FIG. 8).
- the body 4 of the device 3 is inserted therein so that its end 11, forming a connecting part, is housed in the orifice and the collar 12 is housed in the counterbore of the opening 100 (see FIGS. 8 and 9).
- the body 4 thus arranged is fixed to the part 2 according to a connection of the embedding type, for example by welding.
- the fixing of the connecting part 11 to said second part 2 does not require having to pass through each of the first and second parts 1, 2. This simplifies the steps of mounting and dismounting the first part 1 on the second part 2.
- the fixing of the connecting part 11 to said second part 2 can be permanent.
- the fixing can be definitive by welding and/or gluing etc.
- the collar 12 of the body 4, like the counterbore of the opening 100 are optional and depend on the method of assembling the body 4 to the second part 2.
- the opening 100 can be blind.
- the body 4 can be fixed to the second part 2, by screwing the connecting part 11 into a blind opening 100 formed within the second part 2.
- the second part 2 can be an external wall delimiting a closed cavity.
- the second part 2 may be an external wall of a vacuum enclosure or a water and/or gas reserve, etc.
- the device 3 may be used in environments with very varied temperatures and/or radioactive environments.
- the connecting part 11 may be fixed to the second part 2, without passing through the second part 2, for example by fixing the connecting part 11 directly to the surface 101 of the second part 2, or within a blind opening 100 provided within the second part 2.
- the force for holding the first part 1 on the second part 2 may be controlled without breaking the seal between the internal volume of the closed cavity delimited by the second part 2 and the environment outside the closed cavity.
- the device 3 also makes it possible to mount and dismount the first part 1 on the second part 2 without exerting torque around the longitudinal axis A1 of the body 4 and therefore to eliminate the risks of deterioration of the part 2 on the periphery of the body 4.
- a device 3 is thus provided which is removably mounted on the second part 2.
- the part 1 is arranged on the surface 101 of the part 2 so that the end 13 of the body 4 passes through an orifice 102 of the part 1.
- the spring e is mounted on the end 13 of the body 4 so that its surface 44 (see figure 7) comes to bear on a surface 104 of the part 1, opposite the surface (not visible) of the part 1 which is opposite the surface 101 of the part 2.
- the head 5 is then engaged on the end 13 of the body 4, so as to pass from said first configuration to said second. configuration (see above).
- the surface 34 of the head 5 comes into contact with the surface 43 of the spring 6 (see FIG. 7) after which the continuation of its translation compresses the spring e thereby reducing its length X8 (see FIG. 2, 7 and 12).
- the shoulder 22 of the body 4 limits the travel of the head 5 and thus prevents excessive crushing of the spring 6.
- the head 5 is first rotated to move from said second configuration to said third configuration.
- the spring e releases part of the energy it has stored so as to push the head 5 towards said second axial position, thereby placing the device s in said fourth configuration.
- Disassembly can be carried out in a similar manner in reverse, by exerting with the head 5 a force compressing the spring 6 so as to pass from the fourth to the third configuration, by rotating the head 5 from said second angular position to said first angular position, thus passing the device 3 from the third to the second configuration.
- the spring e releases the energy that it has stored by pushing the head 5 towards said free position.
- FIG. 13 The other device s of the assembly of Figure 1, located towards the left of Figure 1, is shown separately in Figure 13.
- This device 3 is distinguished from that of Figure 2 in that it comprises a second compression member 7B.
- the compression member 7B comprises a head 5B and a spring 6B similar to the head 5 and the spring 6 of the compression member 7.
- the body 4 of the device 3 of figure 13 comprises a longitudinal end 11B which is distinguished from the end 11 of the body 4 of figure 3 in that it comprises stages similar to the stages 16 and 17 of the body 4 of figure 3, in order to cooperate with the compression member 7B in the same way that the compression member 7 cooperates with the end 13.
- the device 3 of figure 13 thus makes it possible to hold two parts located on either side of another part pressed together.
- the device 3 located towards the left thus makes it possible to hold a third part (not shown), on the surface of the part 2 opposite the surface 101 on which the part 1 is arranged.
- the body 4 of the device 1 is devoid of the orifice 10.
- the body 4 of the device of the invention comprises a longitudinal end 13 which differs from that of Figure 3 in that the external surface of the stages 14 and 15 is free of a flat surface.
- the longitudinal end 13 of the body 4 comprises, in place of the groove 16 of the example of Figure 3, two symmetrical recessed portions 200 (only one being visible in Figure 15) which each extend over a limited angular portion, so as to form circumferential stop surfaces 201.
- the recessed portions 200 are configured to cooperate with elements of the head of the device (not shown), such as lugs arranged in a similar manner to the lugs 35 illustrated in Figures 4-6, so as to guide the rotation of the head between said angular locking and unlocking positions.
- the circumferential stop surfaces 201 are in this example configured to prevent rotation of the head beyond the angular locking and unlocking positions.
- the device is configured so that a movement of the head between the locking and unlocking angular positions defines an angle of /2 rad, thus forming a quarter-turn type system.
- the device can be configured so that this angular value is different, for example equal to /3 rad.
- the spring e of the compression member(s) of the device may be replaced by another type of elastic element, for example an elastically deformable material such as rubber.
- the elastic element may be attached to the head, or be formed in one piece with the head.
- the compression member may form a male part and the body a female part, unlike the preceding examples in which the compression member forms a female part and the body a male part.
- the head may comprise lugs similar to the lugs 35 of the head 5 of FIGS. 4-6 but oriented radially outwards, so as to cooperate for example with protuberances extending radially inwards of the body to prevent rotation of the head in the locking configuration.
- the different embodiments and variants described above can be combined and the different parts of the device of the invention can have various geometries and dimensions and be made of various materials depending on the applications and in particular the plating forces to be applied.
- an increase in the diameter of the spring makes it possible to increase the compression force.
- the connecting part of the body 4 formed by its end 11 is welded to the part 2.
- the connecting part of the body 4 which can have various geometries, can be fixed to the part 2 or to another part by other means, for example by riveting, gluing and/or screwing.
- the body 4 comprises surfaces such as those formed by the flats 21, these can be used to fix the body 4 to the part 2, in particular when the fixing is carried out by screwing.
- the connecting part of the body is fixed to said second part according to a pivot-type connection allowing on the one hand a rotation of the body relative to said second part, around the longitudinal axis of the body and, on the other hand, securing the body and the second part in translation along this longitudinal axis.
- the mounting of the head on the body, in particular the transition from said second configuration to said third configuration can be carried out by immobilizing the body in rotation around the longitudinal axis, for example using a tool (not shown) cooperating with an internal surface of the body and/or with another part of the body.
- Figure 16 shows a tool 300 for facilitating the assembly of the head 5 of the device 3 on its body 4.
- the head 5 is similar to that illustrated in Figure 4.
- the tool 300 comprises a handle 301 as well as a mechanism for securing the handle 301 to the head 5, in this example both in translation along the axis A1 of the device 3 and in rotation around this axis A1.
- said mechanism of the tool 300 comprises a trigger 302 and a ball 303 configured to penetrate into an opening 310 of the head 5 (see FIG. 4), the trigger 302 being configured to hold the ball 303 in the opening 310 under the action of a spring and to release the head 5 under the action of a manual force applied to the trigger 302 against the spring.
- Such a tool 300 also makes it possible to reduce the size of the head 5.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
- Clamps And Clips (AREA)
- Automatic Assembly (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP24731340.6A EP4724707A1 (fr) | 2023-06-07 | 2024-06-05 | Dispositif et procédé de fixation à serrage élastique |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2305726A FR3149652B1 (fr) | 2023-06-07 | 2023-06-07 | Dispositif et procédé de fixation à serrage élastique |
| FRFR2305726 | 2023-06-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024251834A1 true WO2024251834A1 (fr) | 2024-12-12 |
Family
ID=88147152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2024/065497 Ceased WO2024251834A1 (fr) | 2023-06-07 | 2024-06-05 | Dispositif et procédé de fixation à serrage élastique |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4724707A1 (fr) |
| FR (1) | FR3149652B1 (fr) |
| WO (1) | WO2024251834A1 (fr) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2688894A (en) * | 1951-05-11 | 1954-09-14 | Henry J Modrey | Rotatable fastener having elastically deformable sleeve |
| WO2002096234A1 (fr) * | 2001-05-30 | 2002-12-05 | Pem Management, Inc. | Attache de panneaux a rotation rapide |
-
2023
- 2023-06-07 FR FR2305726A patent/FR3149652B1/fr active Active
-
2024
- 2024-06-05 EP EP24731340.6A patent/EP4724707A1/fr active Pending
- 2024-06-05 WO PCT/EP2024/065497 patent/WO2024251834A1/fr not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2688894A (en) * | 1951-05-11 | 1954-09-14 | Henry J Modrey | Rotatable fastener having elastically deformable sleeve |
| WO2002096234A1 (fr) * | 2001-05-30 | 2002-12-05 | Pem Management, Inc. | Attache de panneaux a rotation rapide |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3149652B1 (fr) | 2025-06-20 |
| FR3149652A1 (fr) | 2024-12-13 |
| EP4724707A1 (fr) | 2026-04-15 |
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