EP3507512A1 - Functional device with upper bushings having pre-retention protruding front walls - Google Patents
Functional device with upper bushings having pre-retention protruding front wallsInfo
- Publication number
- EP3507512A1 EP3507512A1 EP17758597.3A EP17758597A EP3507512A1 EP 3507512 A1 EP3507512 A1 EP 3507512A1 EP 17758597 A EP17758597 A EP 17758597A EP 3507512 A1 EP3507512 A1 EP 3507512A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- screw
- vsj
- dsj
- functional device
- inner face
- 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- Withdrawn
Links
- 230000014759 maintenance of location Effects 0.000 title 1
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 238000012423 maintenance Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 210000000078 claw Anatomy 0.000 description 14
- 239000000463 material Substances 0.000 description 9
- 230000005484 gravity Effects 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000011960 computer-aided design Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000004033 plastic Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000003100 immobilizing effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
-
- 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
- F16B41/00—Measures against loss of bolts, nuts, or pins; Measures against unauthorised operation of bolts, nuts or pins
- F16B41/002—Measures against loss of bolts, nuts or pins
Definitions
- the invention relates to the mounting of certain functional devices on an inclined wall of a system, and more specifically the pre-maintenance of these functional devices during their phase of attachment to an inclined wall.
- the invention relates to any functional device to be secured to an inclined wall, possibly at about 90 °, including and not limited to vehicle cranks.
- This pre-holding clip generally comprises three clipping tabs, intended to allow its coupling inside the screw passage, and three flexible claws interposed between these clipping tabs and intended to be housed between adjacent portions of a thread of a screw to pre-maintain the base relative to the latter screw.
- These claws are in fact species of anti-recoil stops adapted to pre-maintain the functional device on the screws by preventing it from escaping.
- the flexibility of the claws which is essential for the relative translation of the pre-holding screw, results not only from their shape, but also from the plastic material used (generally a polyamide (such as for example PA66.12)).
- the functional device comprises a plastic base
- the claws is forced to use a rigid material that does not allow to give the claws the same flexibility as in the pre-holding clip.
- At least one upper bushing comprising a screw passage delimited by an inner face comprising, on the one hand, in an upper front zone at least one rigid claw and adapted to be housed between two adjacent portions of a thread of a screw to pre-hold the base relative to the latter screw, and, secondly, in a lower zone a decreasing radius of the lower front zone towards the zone lower back to facilitate the crossing of the screw participating in the pre-maintenance.
- obtaining such an arrangement of the inner face requires the use of two pins for final demolding, which is not compatible with some molds.
- the invention is therefore particularly intended to improve the situation.
- a functional device adapted to be secured to a wall which is inclined relative to a horizontal plane and provided with at least two upper screws and at least one lower screw, and comprising in a rear part.
- a base provided with two upper sleeves and at least one lower bushing adapted to be traversed respectively by the upper screws and lower screw.
- This functional device is characterized in that its upper sleeves each comprise a screw passage defined by an inner face having in an upper front zone a projecting wall (constituting a claw) having an edge inclined relative to the horizontal plane and adapted to be housed between two adjacent portions of a thread of an upper screw to pre-maintain the base relative to the latter.
- the functional device according to the invention may comprise other characteristics that can be taken separately or in combination, and in particular:
- the projecting walls may have edges inclined symmetrically with respect to a vertical plane perpendicular to the horizontal plane and located equidistantly between the two upper sleeves;
- each edge can be inclined at an average angle of between 25 ° and 65 °.
- each edge may be inclined at an average angle equal to 45 °;
- each projecting wall may be defined in a plane perpendicular to the horizontal plane and perpendicular to the internal face;
- each upper bushing may have in a lower zone a thickness strictly less than a thickness that it present in an upper zone comprising the upper front zone to facilitate the crossing of the associated upper screw and then a support inclined against the latter during the pre-hold;
- each upper sleeve may comprise at least in an upper rear zone an axial protrusion dedicated to the inclined support against the upper screw associated during the pre-holding;
- each upper sleeve may comprise a metal insert of generally cylindrical circular shape and on which is molded a coating defining the inner face;
- each protruding wall may be an integral part of the coating or each protruding wall may be an integral part of the metal insert and pass through the coating;
- each upper sleeve may comprise an attached sleeve, immobilized in the screw passage, defining the inner face and comprising each projecting wall;
- each projecting wall may be rigid
- Each upper bushing may be an insert, fixedly secured to the base;
- the invention also proposes a vehicle, possibly of automobile type, and comprising at least one functional device of the type of that presented above.
- FIG. 1 schematically illustrates, in a front view of the front side, an exemplary embodiment of a functional device according to the invention, at the beginning of its phase of securing to screws of an inclined wall of a vehicle (not shown),
- FIG. 2 schematically illustrates, in a front view, the side of its front part, the first upper bushing of the functional device of FIG.
- FIG. 3 schematically illustrates, in a front view, on the side of its front part, the second upper bushing of the functional device of FIG. 1,
- FIG. 4 schematically illustrates, in a front view, on the side of its rear part, the first upper bushing of the functional device of FIG. 1,
- FIG. 5 schematically illustrates, in a longitudinal sectional view, a portion of the functional device of FIG. 1, at the beginning of its phase of securing to screws of an inclined wall of a vehicle,
- FIG. 6 schematically illustrates, in a view in longitudinal section, the first upper bushing of the functional device of FIG. 1, at the beginning of the securing phase
- FIG. 7 schematically illustrates, in a view in longitudinal section, the functional device of FIG. 1, at an intermediate stage of its securing phase during which it is pre-held on the screws,
- FIG. 8 schematically illustrates, in a longitudinal sectional view, the first upper bushing of the functional device of FIG. 1, in the intermediate pre-holding stage,
- FIG. 9 schematically illustrates, in a view in longitudinal section, the functional device of FIG. 1, just before the end of its securing phase
- FIG. 10 schematically illustrates, in a longitudinal sectional view, the first upper bushing of the functional device of FIG. 1, just before the end of its securing phase
- FIG. 1 1 schematically illustrates, in a perspective view, an embodiment of the second bushing of the functional device of Figure 1, before the pre-hold phase.
- the object of the invention is notably to propose a functional device DF intended to be secured to a support wall PF which is inclined with respect to a horizontal plane and which forms part of a system.
- the inclined wall PF is part of a vehicle, possibly an automobile, such as a car.
- a functional device DF can be part of any system having at least one inclined wall for supporting it. Therefore, it concerns in particular any type of vehicle (land, sea (or river), or air), any type of installation, including industrial type, and any material manufactured in large series (including household appliances, appliances entertainment (or game consoles), and furniture).
- the DF functional device is a crankset of a motor vehicle, for example for controlling the clutch or acceleration or braking.
- the functional device DF may also be a housing comprising at least one electronic module, an air conditioning unit, a liquid reservoir (for example windshield washer), or an interior trim piece, for example example.
- the functional device DF has a center of gravity CG located in a front portion PV1 opposite its inclined wall PF support. But this is not a necessity because it depends in particular on the angle of inclination of the support wall PF relative to the horizontal plane and the arrangement of the functional device DF.
- FIGS. 1, 5, 7 and 9 show schematically a part of an example of a functional device DF according to the invention and a part of a support wall PF intended to support this functional device DF in a fixed manner and which is here part of of a motor vehicle.
- the support wall PF is substantially perpendicular to the horizontal plane which is perpendicular to the plane containing the drawings and built in particular from the horizontal direction DH. But its inclination could be less than 90 °.
- the support wall PF comprises two upper screws VS1 and VS2 and a lower screw VI. But it could include more than two upper screws VSj (for example three) and / or several lower screws (for example two).
- a functional device DF comprises a front portion PV1 and a rear portion PR1 comprising an ED base.
- the center of gravity CG is located in the front part PV1.
- the base ED is provided with at least two upper bushes DSj which each comprise a screw passage PAj through which a corresponding upper screw VSj of the support wall PF and of at least one lower bushing D1, which comprises a PAI screw passage adapted to be traversed by a lower screw VI corresponding to the support wall PF.
- the screw passage PAj of at least two upper sockets DSj of the base ED is delimited by an internal face FI which comprises in an upper front zone ZVS a protruding wall PSj (constituting a claw) having an edge BPj inclined relative to the horizontal plane and adapted to be housed between two adjacent portions of a thread FV of an upper screw VSj to pre-maintain the base ED relative to the latter (VSj).
- the protruding walls PSj (which constitute claws) may have edges BPj which are inclined symmetrically with respect to a vertical plane which is perpendicular to the horizontal plane ( serving as a reference for the inclination of the support wall PF), built in particular from the vertical direction DV (see FIG. 1), and located at an equal distance between the two upper sockets DS1 and DS2.
- This option is intended to allow an advantageous wedging effect of the protruding walls PSj against the upper screws VSj, for reinforcing the pre-hold of the base ED relative to the upper screws VSj.
- each edge BPj may be inclined at an average angle of between 25 ° and 65 °.
- each edge BP 1 can, for example, be inclined at an average angle of 45 °, as illustrated in FIGS. 1 to 3 and 1 1.
- each edge BPj is preferably linear.
- each projecting wall PSj may, for example, be defined in a plane perpendicular to the horizontal plane and perpendicular to the internal face FI (here the plane of the drawings of Figures 1 to 3, built from the horizontal directions DH and vertical DV ).
- the injection mold used may be associated with a single pin for demolding the hole PAj and the projecting wall PSj, and the bearing face of the nut can be unmolded by a lateral movement.
- This constraint requires that the face "side nut" of each protruding wall PSj be merged with the support plane of the nuts. The other face is then inclined to create a triangular section whose apex is the edge BPj.
- the holes PAj could be demolded by means of two opposite movements, so that the edge BPj of the projecting wall PSj is slightly inclined, ideally depending on the angle of the threading, and that its section makes an isosceles triangle. equivalent to a screw thread.
- each upper sleeve DSj may also comprise between its upper front zone ZVS and its lower front zone ZVI, and at a distance from its protruding wall PSj, a centering lateral wall PCj comprising a substantially vertical edge.
- each upper bushing DSj may have in a lower zone a thickness which is strictly smaller than the thickness it has in the upper zone. who includes its upper front area ZVS.
- This option is intended to facilitate the crossing of each upper screw VSj in the screw passage PAj of the upper sleeve DSj associated, and an inclined support of the latter (DSj) against the upper screw VSj during the pre-hold. It therefore serves mainly for the coupling of the upper sockets DSj and lower (s) Dl respectively to the upper screws VSj and lower (s) VI.
- each screw passage PAI of a lower screw VI it is advantageous, as illustrated in FIG. 1, for each screw passage PAI of a lower screw VI to have an oblong shape (the largest dimension being in the vertical direction DV). This allows the switchover and suppression of hyperstatism.
- the technical characteristic relative to the presence of the protruding walls PSj in the front part of the upper sockets DSj, serves mainly during the pre-hold phase on the screws VSj and VI. It is designed to prevent the functional device DF from escaping screws VSj and VI while the technician loosens it temporarily to recover the screwing tool, in particular when its center of gravity CG is located in its front part PV1.
- the technician can place nuts on the free ends of screws VSj and VI, on the side of the front areas of the sockets DSj and Dl, then grasp its screwing tool to screw the nuts according to the expected torque.
- the tightening of the nuts can automatically cause the recovery of the functional device DF and the plating of the latter (DF) against the support wall PF.
- the protruding portions PSj disengage the FV threads, either by sliding on the thread or by deformation or local rupture.
- each upper bushing DSj may possibly comprise at least in the upper rear zone ZRS an axial protrusion PR 'dedicated to inclined support against the upper screw VSj associated during the pre-hold. This makes it possible to constrain the maximum inclination of the base ED relative to the upper screws VSj.
- the upper sleeves DSj form an integral part of the ED base.
- the upper sleeves DSj may be either entirely made of the same rigid material as the base ED, possibly together with the latter (ED), for example by molding (or injection) of a plastic material, or partially made of the same rigid material as the ED base.
- the upper bushes DSj comprise a metal insert IM of generally cylindrical circular shape and on which is molded a coating EN which defines the inner face FI.
- This metal insert IM is intended to reinforce the stiffness and resistance of the upper sockets DSj.
- This coating EN is made of the same rigid material as the ED base at the same time as the latter (ED), for example by molding (or injection).
- each protruding wall PSj may form an integral part of the encapsulation EN, as shown in non-limiting manner in FIGS. 5 to 10, and may therefore be produced by molding (or injection) at the same time as the ED base.
- each protruding wall PSj may be an integral part of the metal insert IM and thus passes through the coating EN.
- each protruding wall PSj may, for example, be carried out by stamping or stamping.
- each upper sleeve DSj may comprise an attached sleeve which is immobilized in the screw passage PAj, defines the internal face FI and comprises each projecting wall PSj.
- This attached sleeve is, for example, force-fitted in the screw passage PAj, or comprises locking means for fixedly immobilizing it in the associated screw passage PAj, possibly cooperating with other locking means defined in the latter (PAj).
- the attached sleeve can be made by molding (or injection) a material that is identical or different from that used for the ED base.
- each upper sleeve DSj may be an insert, fixedly attached to the base ED, instead of being an integral part of the latter (ED).
- each lower bushing D1 may be an integral part of the ED base and may be made entirely of the same rigid material as the ED base at the same time as the latter (ED), or comprise a metal insert of general shape. circular cylindrical and on which is molded a coating, as shown without limitation in Figures 5, 7 and 9.
- each lower sleeve Dl may be an insert, fixedly secured to the base ED.
- each projecting wall PSj is preferably rigid. But it could be semi rigid.
- the invention offers several advantages, among which:
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1658066A FR3055377B1 (en) | 2016-08-31 | 2016-08-31 | FUNCTIONAL DEVICE WITH SLEEVES SUPERIOR TO WALLS BEFORE PRE-MAINTENANCE |
PCT/FR2017/052190 WO2018042097A1 (en) | 2016-08-31 | 2017-08-04 | Functional device with upper bushings having pre-retention protruding front walls |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3507512A1 true EP3507512A1 (en) | 2019-07-10 |
Family
ID=57348892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17758597.3A Withdrawn EP3507512A1 (en) | 2016-08-31 | 2017-08-04 | Functional device with upper bushings having pre-retention protruding front walls |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3507512A1 (en) |
FR (1) | FR3055377B1 (en) |
WO (1) | WO2018042097A1 (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2929233B1 (en) * | 2008-03-28 | 2010-04-02 | Peugeot Citroen Automobiles Sa | ACCELERATOR MODULE FOR MOTOR VEHICLE |
FR2929234B1 (en) * | 2008-03-28 | 2010-05-07 | Peugeot Citroen Automobiles Sa | PEDALER FOR MOTOR VEHICLE AND SPACER BI-MATERIAL FOR PRE-MAINTENANCE OF THE PEDAL |
FR2967795A1 (en) * | 2010-11-22 | 2012-05-25 | Peugeot Citroen Automobiles Sa | Cylindrical device for pre-holding pedals of motor vehicle, has cylindrical spacer retaining screw and held by wing that outwardly extends from cylinder, where another wing holds screw and inwardly extends to cylinder |
-
2016
- 2016-08-31 FR FR1658066A patent/FR3055377B1/en not_active Expired - Fee Related
-
2017
- 2017-08-04 WO PCT/FR2017/052190 patent/WO2018042097A1/en unknown
- 2017-08-04 EP EP17758597.3A patent/EP3507512A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
WO2018042097A1 (en) | 2018-03-08 |
FR3055377B1 (en) | 2018-08-31 |
FR3055377A1 (en) | 2018-03-02 |
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