EP2324255A1 - Attache en matière plastique - Google Patents

Attache en matière plastique

Info

Publication number
EP2324255A1
EP2324255A1 EP09777671A EP09777671A EP2324255A1 EP 2324255 A1 EP2324255 A1 EP 2324255A1 EP 09777671 A EP09777671 A EP 09777671A EP 09777671 A EP09777671 A EP 09777671A EP 2324255 A1 EP2324255 A1 EP 2324255A1
Authority
EP
European Patent Office
Prior art keywords
plastic clip
legs
clip according
plastic
clamping
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Withdrawn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
EP09777671A
Other languages
German (de)
English (en)
Inventor
Thomas Schmidt
Johann-Adalbert Reindl
Hans-Peter Seng
Wolfang Gerlach
Christian Kempf
Karin Wimmer
Michael Schmidt
Jens Albach
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.)
Newfrey LLC
Original Assignee
Newfrey LLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Newfrey LLC filed Critical Newfrey LLC
Publication of EP2324255A1 publication Critical patent/EP2324255A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/005—Means to increase the friction-coefficient
    • 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
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
    • F16B2/18—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening using cams, levers, eccentrics, or toggles
    • F16B2/185—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening using cams, levers, eccentrics, or toggles using levers
    • 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
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/20—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening
    • F16B2/22—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening of resilient material, e.g. rubbery material
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/30—Installations of cables or lines on walls, floors or ceilings
    • H02G3/32—Installations of cables or lines on walls, floors or ceilings using mounting clamps
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/26—Installations of cables, lines, or separate protective tubing therefor directly on or in walls, ceilings, or floors
    • H02G3/263—Installation, e.g. suspension, of conduit channels or other supports
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/44—Clasp, clip, support-clamp, or required component thereof
    • Y10T24/44017—Clasp, clip, support-clamp, or required component thereof with specific mounting means for attaching to rigid or semirigid supporting structure or structure-to-be-secured
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/44—Clasp, clip, support-clamp, or required component thereof
    • Y10T24/44641—Clasp, clip, support-clamp, or required component thereof having gripping member formed from, biased by, or mounted on resilient member
    • Y10T24/44684—Clasp, clip, support-clamp, or required component thereof having gripping member formed from, biased by, or mounted on resilient member with operator for moving biased engaging face
    • Y10T24/44692—Camming or wedging element
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/44—Clasp, clip, support-clamp, or required component thereof
    • Y10T24/44641—Clasp, clip, support-clamp, or required component thereof having gripping member formed from, biased by, or mounted on resilient member
    • Y10T24/44744—Clasp, clip, support-clamp, or required component thereof having gripping member formed from, biased by, or mounted on resilient member with position locking-means for engaging faces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/44—Clasp, clip, support-clamp, or required component thereof
    • Y10T24/44641—Clasp, clip, support-clamp, or required component thereof having gripping member formed from, biased by, or mounted on resilient member
    • Y10T24/44932—Clasp, clip, support-clamp, or required component thereof having gripping member formed from, biased by, or mounted on resilient member having specific surface material or irregularity on or along engaging face

Definitions

  • the present invention relates to a plastic clip for fixing an object in the region of a front side of a flat workpiece, having a base portion whose shape is adapted to the front side, with a first and a second leg extending from the base portion and with the base portion of a U Form, and with a fastening portion which is connected to the base portion and adapted to fix the object to the clip, wherein the legs are elastically expandable against each other.
  • plastic clips for secure attachment of cables (pipes, electrical cables, Bowden cables, etc.) or harnesses, plugs, sensors, etc. on faces or edges of workpieces are known, the plastic clips have an integrated metal clip.
  • the workpieces can be made smooth in the area of the front side, as is the case for example with body panels, plastic edges of bumpers, covers, Radlaufschalen and glass workpieces.
  • These plastic clips are preferably used in the field of instrument panels of motor vehicles, in water tanks and in the interior area (for example in the door area), in the exterior area and in the engine compartment of motor vehicles.
  • the metal clips of the known plastic clips have a metal spring claw, which claws on attachment of the plastic clip to the surface of the workpiece.
  • this type of fastening has the disadvantage that the surface of the workpiece can be damaged (for example, in the case of galvanized or painted sheet metal edges). This can already happen when pressing or striking the plastic clips through the metal spring claw. This can lead to corrosion problems.
  • these known plastic clips have the disadvantage that they can be disassembled only relatively expensive. It is sometimes necessary to destroy the plastic clip. Overall, it is a relatively expensive fastening solution.
  • the object of the invention to provide a clip for fixing the object in the region of an end face of a flat workpiece, which does not damage the surface of the workpiece and can be assembled and disassembled comparatively easily. Nevertheless, a secure hold of the plastic clips on the workpiece should be feasible, and the plastic clip should preferably be made purely of plastic.
  • a plastic clip having the features of claim 1.
  • the base portion and the legs are made in one piece from a first, relatively hard plastic material.
  • an anti-slip portion made of a relatively soft plastic material is provided.
  • the anti-slip portion allows on the one hand, that the plastic clip can be securely fixed to the workpiece.
  • the anti-slip section can ensure that the surface of the workpiece is not damaged.
  • the relatively soft plastic material which is preferably a thermoplastic elastomer (TPE)
  • TPE thermoplastic elastomer
  • the base portion and the legs are made in one piece from the first, relatively hard plastic material.
  • the plastic clip can be produced from a few components or components.
  • an anti-slip section is likewise provided on the base side of the base section facing the legs. This also makes it possible to increase the security of the fastening, since a relatively high friction can also be established between the end face of the workpiece and the anti-slip section on the bottom side of the base section.
  • a plastic clip described above can be sufficient to realize a secure fit on the front side of the workpiece.
  • a lever is rotatably mounted, which is pivotable between a clamping position and a release position and a clamping portion which extends in the clamping position of the lever in an area between the legs and in the Release position is withdrawn from the area between the legs.
  • the plastic clip with the lever in the release position can be relatively easily mounted on the workpiece. Subsequently, it can be achieved by pivoting the lever in the clamping position, that the bias of the elastically expandable leg is further increased. As a result, the seat of the plastic clip on the workpiece can be further improved.
  • leg, on which the lever is rotatably mounted has a recess through which the clamping portion can extend into the region between the legs.
  • the clamping portion can be supported approximately symmetrically on the associated leg to set the clamping position. In this way, the correct fit of the plastic clip on the workpiece can be further improved.
  • the anti-slip portion covers the recess on the inside of the leg, so that the clamping portion can press the anti-slip portion in the clamping position against the workpiece.
  • the lever in the clamping position can increase the friction between the anti-slip portion and the surface of the workpiece.
  • the plastic clip can be disassembled relatively easily. This can be done by the lever is pivoted from the clamping position back to the release position. As a result, the seat between the plastic clip and the workpiece is loosened, so that the plastic clip can then be relatively easily removed from the workpiece, in particular without destroying the plastic clips.
  • lever is rotatably mounted about an axis of rotation, which is aligned approximately parallel to the associated leg.
  • the axis of rotation comparatively simple structurally set up on the leg, in particular from injection molding technical point of view.
  • the axis of rotation is oriented transversely to a longitudinal direction in which the legs extend from the base section.
  • the lever can consequently be actuated substantially in the longitudinal direction, so that, at least in the clamping position, a relatively compact outer contour of the plastic clip results.
  • interfering contours can be largely avoided, which could pose a risk of accidental release of the plastic clips.
  • the anti-slip portion is formed directly on the inside of the legs.
  • the plastic clip has an outer portion, which forms the base portion and the legs, and an inner portion, which is also formed of a relatively hard plastic material, wherein the anti-slip portion is formed on the inner side of a leg of the inner portion.
  • the plastic material of the inner portion may be identical to the plastic material of the outer portion, but may also be formed differently thereto.
  • the inner portion may be formed in the simplest case also U-shaped with an inner base portion and inner legs, which are encompassed by the legs of the outer portion.
  • the inner portion may also consist only of legs which are formed as a carrier for the anti-slip portions.
  • the inner legs which are not interconnected with one another, can be coupled in a release state, for example, with the respective legs of the outer section.
  • the outer portion and the inner portion may perform different functions in this embodiment, as will be described below for various different embodiments.
  • the outer portion is movable relative to the inner portion in a clamping direction to move the plastic clip from a release state to a clamping state in which the outer portion exerts a pressing force in a direction toward the workpiece toward the inner portion from outside ,
  • the outer portion and the inner portion are in the release position in such a relative position that a sliding of the plastic clips on the workpiece is relatively simple, the respective anti Sliding section thus still has substantially no increased friction effect with respect to a surface of the workpiece. Therefore, the plastic clip can be mounted with low mounting forces.
  • the outer portion After the relative movement and in the clamping state, the outer portion exerts a pressing force on the inner portion in the direction toward the workpiece. As a result, the coefficient of friction between the anti-slip portion and the surface of the workpiece is increased. As a result, the peel force necessary to peel the plastic clip from the workpiece is increased. This increases the mounting security.
  • clamping direction is substantially parallel to the extension of the legs.
  • the clamping direction can be aligned transversely to a direction in which the inner portion is pushed onto the workpiece. Of particular preference, however, it is when the clamping direction is aligned parallel to such a mounting direction.
  • the assembly is generally carried out so that first the inner portion is pushed in the mounting direction on the end face of the workpiece. Subsequently, the outer portion is moved in the same direction relative to the inner portion to establish the clamping state.
  • a locking device is provided in order to lock the outer section in the clamping state on the inner section.
  • the locking device can generally be formed by a further component.
  • the locking device is designed as a latching device.
  • the locking can be done by a locking engagement between the outer portion and the inner portion.
  • the latching device may have a latching lug or a plurality of latching lugs, either on one or on both legs of the outer portion and / or the inner portion.
  • the latching device on a latching lug or a plurality of latching lugs, which are arranged one behind the other in the clamping direction.
  • the outer portion can be fixed in different relative positions on the inner portion.
  • the latching noses are arranged along a cone line which is aligned at an angle greater than zero with respect to the clamping direction.
  • the plastic clip for mounting on workpieces of different thickness.
  • the outer portion is pushed relatively far with respect to the inner portion, so that the legs of the inner portion are compressed relatively far due to the cone action.
  • the amount of relative movement may be smaller.
  • the contact pressure can also be adjusted by the cone arrangement of the latching section.
  • the outer portion and the inner portion are produced as separate components, which are locked against each other only in the clamping state.
  • the coupling device by means of a film hinge via which the outer section and the inner section are coupled to one another in the preassembly position (release state).
  • the film hinge is broken in Kochen the plastic clips in the clamping state.
  • the outer portion and the inner portion are locked against each other in the pre-assembly, that is in the release state.
  • the outer portion and the inner portion can be made separately from each other, especially from different materials.
  • the inner portion may be formed in two-component injection molding with the anti-slip portion. The coupling in the preassembled state then takes place by latching the outer section to the inner section.
  • a leg of the outer portion and a leg of the inner portion are connected to each other via a Parallelogrammversatzabêt.
  • the parallelogram offset portion may connect respective ends of the legs of the outer portion and the inner portion, such that in a pre-assembly position the parallelogram offset portion is inclined with respect to the leg extension. Then, when the outer portion is moved in the clamping direction relative to the inner portion, this leads to a "Erecting" the Parallelogrammversatzabiteses, whereby the legs of the outer portion and the legs of the inner portion are widened in the direction transverse to the clamping direction against each other. As a result, in the clamping state, an increased pressure force can be exerted on the inner section from the outer section, specifically via the parallelogram offset section.
  • the inner portion is pivotably mounted about a pivot axis on the outer portion.
  • the pivot axis may, for example, be arranged in the region of a free end of a leg of the outer portion.
  • the pivot axis extends in a direction parallel to the leg extension, but transversely to the clamping direction. Also in this embodiment can be increased by pivoting the inner portion about the pivot axis, a contact pressure of the inner portion of the workpiece.
  • the plastic clip is made with the base portion and the legs of the relatively hard plastic material and the anti-slip portion of relatively soft plastic material in the two-component injection molding process.
  • the plastic clip is integrally formed with the anti-slip portion and thus can be easily handled and stored.
  • the anti-slip portion can be produced at least with the inner portion in the two-component injection molding process.
  • the inner portion and the outer portion may be integrally formed with each other (for example, coupled by a living hinge). at However, in other embodiments, the inner portion and the outer portion may also be made of different components.
  • a two-component injection molding process is preferably understood to mean that the plastic clip is produced in a single tool, wherein in a first working step the relatively hard plastic material is injected to form the base section and the leg. In a second step, using the same tool, the second plastic material is injected to form the anti-slip portion.
  • the attachment portion is formed integrally with the base portion and the legs of the relatively hard plastic material.
  • the attachment portion can be integrally integrated into the plastic clip.
  • a damping section made of a relatively soft plastic material, on which the object can be fastened is formed on the fastening section.
  • the same relatively soft plastic material may be used as for the formation of the anti-slip portion.
  • the damping section can preferably be produced in one operation with the anti-slip section, for example in the two-component injection molding method described above.
  • At least one radially outwardly extending stiffening rib is formed on the outside of the legs and / or the base portion.
  • the strength of the plastic clip can be increased.
  • the stiffening rib can be used to reduce the elasticity with which the legs can be bent relative to the base section.
  • the stiffening rib can also serve to fasten the fastening section more solidly or on a larger area to the base section.
  • the plastic clip can be used with workpieces of different thicknesses.
  • the assembly and disassembly of the plastic clip may also preferably be done without auxiliary tool, wherein in the embodiment with lever, this can be operated manually.
  • the plastic clip has no anti-slip portion.
  • the different embodiments described above can also be realized in this aspect of the invention without such an anti-slip portion, especially when the relatively hard material of the plastic clip can already establish a relatively high friction with respect to the surface of the workpiece.
  • FIG. 1 shows a schematic cross-sectional view of a plastic clip according to a first embodiment prior to attachment to a workpiece.
  • Fig. 2 shows the plastic clip of Fig. 1 attached to a workpiece
  • FIG. 3 shows a perspective view of a further embodiment of a plastic clip according to the invention.
  • Fig. 4 is a plan view of the plastic clip of Fig. 3;
  • Fig. 5 is a cross-sectional view taken along line V-V of Fig. 4;
  • Fig. 6 is a cross-sectional view taken along line VI-VI of Fig. 4 with a lever in a release position;
  • FIG. 7 shows a representation corresponding to FIG. 6 with the lever in a clamping position
  • FIG. 8 shows a schematic cross-sectional view of a plastic clip according to a further embodiment in a release state
  • FIG. 9 shows the plastic clip of FIG. 8 in a clamping state
  • Fig. 10 is a perspective view of the plastic clips of Figures 8 and 9 in the clamping state; 11 shows a schematic cross-sectional view of a further embodiment of a plastic clip in a clamping state;
  • Fig. 12 is a schematic view of a leg of an outer portion of the plastic clip of Figure 11 from the inside.
  • FIG. 13 shows a schematic cross-sectional view of a further embodiment of a plastic clip in a release state
  • FIG. 14 shows a schematic cross-sectional view of a further embodiment of a plastic clip in a release state
  • Fig. 15 is a schematic cross-sectional view of another embodiment of a plastic clip in a release state.
  • a mounting arrangement is generally designated 10.
  • the attachment assembly is for securing an article 12 to the face 16 of a flat workpiece, such as a sheet, a sheet of glass, a plastic edge, etc.
  • the article 12 may, in particular, be an elongated article, such as a conduit, a pipe, a Bowden cable, but may also a wiring harness, a plug, a sensor, etc. be.
  • the elongate article 12 is preferably secured parallel to the face 16 of the workpiece 14, but is shown in FIG. 1 in an orientation that extends transversely of the face or workpiece 16.
  • the plastic clip 20 has a base portion 22, whose shape is adapted to the end face 16 of the workpiece 14. From the base section 22, a first leg 24 and a second leg 26 extend, which together with the base section section 22 form a U-shape and are expandable in a direction away from each other, as shown at 28.
  • the first leg 24 has a first inner side 30.
  • the second leg 26 has a second inner side 32.
  • the distance of the legs 24, 26 is selected so that the flat workpiece 14 can be received therebetween when the legs 24, 26 are widened against each other.
  • the inner sides 30, 32 come to bear against a first outer side 34 or a second outer side 36 of the workpiece 14 or are aligned parallel thereto.
  • the plastic clip 20 also has a mounting portion 38 for the article 12.
  • the attachment portion 38 extends from the base portion 22, preferably in a direction opposite to the direction of extension of the legs 24, 26.
  • the mounting portion 38 may be formed as a pure support surface on which an object can be placed and then attached by tools such as cable ties or the like.
  • the attachment portion 38 may include, for example, a lid portion which is hinged to the attachment portion 38 and the base portion 22, respectively. In this case, the article 12 can be received in an open position of the lid and held securely in a closed position of the lid in the mounting portion 38.
  • a damping portion may be provided on the mounting portion 38, via which the article 12 is mounted on the plastic clip 20.
  • the base portion 22, the legs 24, 26 and the attachment portion 38 are preferably made of a relatively hard plastic material and integrally mit- connected to each other.
  • the relatively hard plastic material is still limited elastically deformable to allow the expandability of the legs 24, 26.
  • the expandability may also be formed by a suitable design of the base portion 22 and the legs 24, 26 or the transition therebetween.
  • the damping portion 40 is made of a relatively soft plastic material such as a TPE and is elastically relatively deformable or has a great elasticity.
  • a first anti-slip portion 42 and a second anti-slip portion 44 of the relatively soft plastic material are formed on the inner sides 30, 32 of the legs 24, 26, a first anti-slip portion 42 and a second anti-slip portion 44 of the relatively soft plastic material (such as TPE) are formed.
  • the legs 24, 26 facing bottom side 46 of the base portion 22 has no anti-slip portion, but may alternatively be provided with such.
  • the plastic clip 20 is placed in an insertion 48 (longitudinal direction) on the workpiece 14, wherein the legs 24, 26 are widened in advance.
  • the fastening of the plastic clips 20 takes place until the bottom side 46 rests on the end face 16.
  • This condition is shown in FIG.
  • the anti-slip portions 42, 44 bear against the outer sides 34, 36 of the workpiece. Due to the elastic restoring forces of the legs 24, 26 (counter to the expansion direction 28), the legs 24, 26 are pressed firmly against the outer sides 34, 36. Due to the high coefficient of friction of the anti-slip portions 42, 44 slipping or unintentional removal of the plastic clips 20 prevented by the workpiece 14 and thus a tight fit of the object to be fastened 12 can be ensured.
  • FIGS. 3 to 7 show a further embodiment of a plastic clip 20 according to the invention.
  • the plastic clip 20 of FIGS. 3 to 7 corresponds in terms of structure and operation of the plastic clip 20 of FIGS. 1 and 2. The same elements are therefore provided with the same reference numerals. In the following, substantially the differences between the embodiments will be explained.
  • the plastic clip 20 has a lever 50, which is pivotably mounted on one of the legs (the leg 26) about an axis of rotation 52.
  • the axis of rotation 52 is arranged approximately parallel with the surface extension of the leg 26 and extends in a direction transverse to the insertion direction 48.
  • the lever 50 has an actuating portion 54 which extends from the axis of rotation 52 in a direction outwardly.
  • the lever 50 has a clamping portion 56 which may be formed, for example, as an eccentric and is arranged on the opposite side of the axis of rotation 52.
  • the lever 50 is shown in a release position.
  • the actuating portion 54 extends obliquely upward against the insertion direction 48.
  • the clamping portion 56 is approximately aligned with the inner side 32 of the leg 26.
  • the lever 50 can be moved from this release position into a clamping position, in which the actuating portion 54 extends in the insertion direction 48 downwardly, as shown in Fig. 7.
  • the eccentric clamping portion 56 then extends inwardly into the space between the legs 24, 26th
  • a stiffening rib 58 is formed, which extends radially outwardly relative to the base portion 22 and is preferably connected at least in sections to the attachment portion 38.
  • the stiffening rib 58 thus serves to support the attachment portion 38 better.
  • the stiffening rib 58 may also have a function to adjust the expansibility of the legs 24, 26, in particular to provide a low elasticity. In other words, it can be achieved by the stiffening rib 58, the restoring force exerted by the legs 24, 26 against the expansion direction 28 can be increased.
  • the stiffening rib 58 may extend at least partially along the outside of the legs 24, 26, as can be seen in particular in FIGS. 4 and 6. Further, instead of a single stiffening rib 58, a plurality of such stiffening ribs 58 may be provided.
  • an anti-slip portion 60 is formed of a relatively soft plastic material.
  • the anti-slip portion 60 extends substantially over the two inner sides 30, 32 of the legs 24, 26 and also on the bottom side 46 of the base portion 22 and consequently also has a total of a U-shape, as in particular in Figs. 6 and 7 to recognize.
  • the attachment portion 38 is configured to secure an object 12 in a direction parallel to the extent of the end face 16 of the workpiece 14, along a mounting axis 62 that is preferably parallel to the axis of rotation 52 of the lever.
  • the attachment portion 38 has a first wing 64 extending from the base portion 22 in a direction along the attachment axis 62. Further, the attachment portion 38 has a second wing 66 extending from the base portion 22 in the opposite direction. As a result, a total of a large support surface for an elongate article can be provided.
  • Ribs 68 may be formed on the underside of vanes 64, 66, as shown in FIG.
  • the ribs 68 may serve to fix fasteners such as cable ties or the like in the axial direction.
  • the plastic clip 20 is produced in a two-component injection molding process.
  • the base portion 22, the legs 24, 26 and the attachment portion 38 a first component of a relatively hard plastic material which is injected in a first step.
  • the anti-slip portion 60 forms a second component of a relatively soft plastic material and is preferably injected in a second step.
  • the anti-slip portion 60 is connected to the relatively hard plastic material on the one hand in the region of a first connecting portion 70, which is arranged in the region of the bottom side 46 of the base portion 22.
  • the anti-slip portion 60 is connected to the free ends of the legs 24, 26, namely at a second connecting portion 72 and at a third connecting portion 74, as can be seen in particular in Fig. 6.
  • the second leg 26 has a recess 76 in which the lever 50 is arranged, wherein the actuating portion 54 extends out of the recess 76 out.
  • the anti-slip portion 60 covers the recess 76 on the inside of the second leg 26, such that the clamping portion 56 abuts against the anti-slip portion 60 from the outside.
  • the swivel bearings for pivoting the lever 50 about the axis of rotation 52 may, viewed in the direction of the axis of rotation 52, be disposed on opposite sides of the recess 76, as shown in Fig. 3.
  • the plastic clip 20 is placed on the workpiece 14 in a state in which the lever 50 is in the release position (Fig. 6).
  • the legs 24, 26 are widened against each other and the plastic clip 20 is placed on the workpiece 14 until the end face 16 rests against the arranged in the bottom side 46 anti-slip portion 60.
  • the shape of the lever 50 is chosen so that the actuating portion 54 extends in the clamping position approximately parallel to the outer side 36 of the workpiece 14 and consequently forms only a small interference contour. Further, the clamping portion 56 is formed so that the lever 50 is briefly suppressed on the way between the release position and the clamping position, so that there is a secure position of the lever 50 in the clamping position, the lever 50 so not unintentionally back to the release position can solve.
  • the embodiments described above have a base portion and two legs extending therefrom, on the inner circumference of which preferably anti-slip portions are formed.
  • plastic clips according to the invention each having an outer portion and an inner portion.
  • the outer portion also generally has a base and two legs extending therefrom and is made of a relatively hard plastic material.
  • the following embodiments are characterized in that the inner portion is generally formed to bear against the opposite side surfaces of the workpiece.
  • an anti-slip portion is preferably provided on the inner portion.
  • the following embodiments are characterized in that the outer portion is movable relative to the inner portion between a release position and a clamping position.
  • the inner portion is preferably also made of a relatively hard plastic made of material, which may be the same or a different plastic material than the plastic material of the outer portion.
  • the outer section may be made of PA 66GF and the inner section of PP.
  • the outer portion is locked in the clamping position generally with respect to the inner portion, preferably by a latching device.
  • the locking device can generally be designed so that a release of the latching connection is possible only by means of a tool.
  • the locking connection can also be designed so that a release of the locking connection by an increased force against the clamping direction without tools is possible.
  • the attachment portion for fixing an article is often not shown.
  • the attachment portion is preferably formed integrally with the outer portion, although this is not shown in the individual case.
  • FIGS. 8 to 10 show a first embodiment of a plastic clip 20 which has an outer section 80 and an inner section 82.
  • the inner portion 82 is formed U-shaped and has a base portion 84 and two extending therefrom legs 86, 88, which are adapted to engage around the workpiece 14.
  • the outer portion 80 of the plastic clips 20 also has a base portion 22 and two thereof extending legs 24, 26.
  • the outer portion 80 and the inner portion 82 are in Fig. 8 in a Shown release position in which the plastic clip can be easily and substantially force-free placed on the workpiece 14.
  • the outer portion 80 is coupled to the inner portion 82 via a first latching device 90, so that the inner portion 82 and the outer portion 80 are held captive to each other.
  • the legs 24, 26 of the outer portion 80 at their ends on the inside latching lugs, which engage behind corresponding detent recesses on the outside of the inner portion 82.
  • the recesses of the inner portion are formed in a transition region between the legs 86, 88 and the base portion 84.
  • a clamping state can be established by the outer portion 80 is pushed in a clamping direction K on the inner portion 82, such that its legs 24, 26 engage over the legs 86, 88 of the inner portion 82.
  • Fig. 9 the clamping state is shown, in which the lugs on the inner sides of the legs 24, 26 engage behind a further recess on the outer side of the legs 86, 88, whereby a second latching device 94 is formed.
  • the outer portion 80 is latchingly locked to the inner portion 82 by the second detent 94 in the clamping state.
  • lateral projections may be formed, each forming a trigger guard 92 in the transverse direction.
  • the outer portion 80 can not be pushed down by the anti-tamper 92 by parallel offset from the inner portion 82.
  • the free ends of the legs 86, 88 of the inner section 82 can have insertion bevels 96, which facilitate mounting on the workpiece 14.
  • These chamfers 96 are in the clamping state, such as represented by the free ends of the legs 24, 26 of the outer portion 80 overlapped, so that at the insertion chamfers 96 can not attack external forces.
  • FIGS. 11 to 13 generally correspond in terms of structure and mode of operation to the plastic clip in FIGS. 8 to 10.
  • the same elements are therefore identified by the same reference numerals.
  • the following section essentially explains the differences.
  • a plastic clip 20 is shown in which on the outside of the legs 86, 88 a plurality of locking lugs 102 is provided, which are arranged one behind the other in the clamping direction K.
  • a plurality of locking lugs are formed, which are arranged one behind the other in the clamping direction.
  • the detents 102 are arranged along a cone line, which is aligned at an angle 100 with respect to the clamping direction K. Consequently, the further the outer portion 80 is pushed onto the inner portion 82, the more the legs 24, 26 are sprayed on. In other words, the further the outer portion 80 is pushed onto the inner portion 82, the higher the pressure force A is achieved. This can be used to adjust the pressing force A or to adapt to workpieces 14 of different thickness.
  • the detents may be staggered across the width of the outer portion 80 to provide a finer gradation of the detents 102.
  • a further embodiment is shown in which the first latching device 90 and the second latching device 94 characterized in that instead of locking surfaces which are aligned perpendicular to the clamping direction K, respectively beveled locking surfaces are provided. Due to the different adjustment of the angle of these locking surfaces can be achieved that the outer portion 80 with relatively little effort can be moved into the clamping position. On the other hand, this can achieve that the outer portion 80 can be withdrawn substantially without tools from the clamping position back to the release position, wherein the force required for this purpose is higher than when setting the clamping state. Corresponding locking surfaces for achieving the clamping state are aligned at an angle ß. A detent surface along which the outer portion 80 can be withdrawn from the release position shown in FIG.
  • FIG. 13 An angle of a detent surface from which the outer portion 80 can be shifted from the clamping state to the release state is shown at ⁇ .
  • the values of ⁇ and ⁇ are preferably identical, but in any case greater in magnitude than the angle ⁇ .
  • the latching surface, which is to be overcome when removing the outer portion 80 of the inner portion of the clamping position is designated in Fig. 13 as a deduction slope 104, which is arranged at the angle ⁇ .
  • the values of ⁇ and ⁇ are preferably less than 90 °.
  • FIG. 14 another embodiment of a plastic clips 20 is shown having an outer portion 80 and an inner portion 82. For ease of illustration, only the right side of the clip 20 is shown.
  • one end of the leg 26 of the outer member 80 is connected via a parallelogram offset portion 106 to one end of the associated leg 88 of the inner portion 82.
  • the parallelogram offset portion 106 is at a relatively acute angle with respect to the clamping direction K. Moving the outer portion 80 in the clamping direction K achieves ⁇ "erecting ⁇ " of the parallelogram offset portion 106 as indicated by dashed lines at 106 1 in FIG Fig. 14 is shown.
  • a latching device 94 for locking inner portion 82 and outer portion 80 in the clamping position shown in dashed lines can, for example.
  • On an inner side of the outer Basisab- Section 22 and an outer side of the inner base portion 84 may be formed and is shown schematically in Fig. 14.
  • FIG. Another embodiment of a plastic clip 20 is shown in FIG. Also in Fig. 15, only one half of the plastic clips 20 is shown.
  • the leg 88 of the inner portion 82 is pivotally connected to one end of the associated leg 26 of the outer portion 80 via a pivot joint 108 (eg, a ball joint).
  • a pivot axis 109 arranged in this way runs parallel to a surface of the workpiece and approximately perpendicular to a mounting direction M, in which the clip 20 is placed on the workpiece 14.
  • the leg 88 of the inner portion 82 is pivoted relative to the leg 26 of the outer portion, that a portion 111 on the inner side of the leg 88 in abutment against the surface of the workpiece 14.
  • the sliding portion 111 is disposed adjacent to the pivot joint 108 and is not covered with an anti-slip portion 36. This is located rather on the base portion 22 facing free end of the leg 88 and obstructs in the release state, a postponement of the clip 20 on the workpiece 14 is not.
  • the clip 20 can be brought into a clamping state by a transverse force in a clamping direction are exerted on a clamping arm 112 of the inner portion 82, which is preferably outside of the leg 26 of the outer portion 80.
  • the clamping arm 112 is thereby moved towards the leg 26, such that the free end of the leg 26 is moved away from the workpiece 14 to the outside, as shown at 110.
  • a second detent 94 is disposed between an outer side of the leg 26 and the tension arm 112 to fix the clamping state.
  • the leg 88 of the inner portion 82 is aligned parallel to the surface of the workpiece 14, so that the anti-slip portion 36 comes into abutment with this surface of the workpiece 14. This is shown in phantom at 36 'in FIG. Furthermore, the leg 26 exercises by the thus achieved Spreading a pressing force A on the leg 88 in a direction of the workpiece 14 from.
  • the anti-slip portion 36 may be formed in all embodiments as a flat planar portion, so that a continuous surface contact with the surface of the workpiece 14 is achieved.
  • the corresponding surface of the anti-slip portion 36 may be formed contoured. This is exemplified in Fig. 13 at 105. As a result, it can be achieved (as in the case of a sawtooth profile) that a lower coefficient of friction or a lower friction effect can be achieved in the direction of pushing onto the workpiece 14 than in the opposite direction. As a result, the withdrawal force can be increased again.
  • an anti-slip portion made of a relatively soft plastic material for increasing the frictional force or the withdrawal force is provided.
  • all embodiments described above may also be formed without such an anti-slip portion of a relatively soft plastic material.
  • the anti-slip portion comes an inner side of a leg of the plastic clips with the workpiece in abutment (or in one embodiment, the lever on a leg).
  • at least the sliding or mounting of the plastic clip with the claw element injected therein is simplified and preferably does not result in scratches on the surface of the workpiece or the like. Only in the clamping position, the claws of the claw element then engage the workpiece.

Abstract

L’invention concerne une attache en matière plastique (20) destinée à fixer un objet (12) dans la zone d’une face avant (16) d’une pièce plate (14) et comprenant une partie de base (22) dont la forme est adaptée à la face avant (16), une première et une seconde branche (24, 26) s’étendant depuis la partie de base (22) et formant un U avec la partie de base (22), et une partie de fixation (38) reliée à la partie de base (22) et conçue pour fixer l’objet (12) à l’attache (20). Les branches (24, 26) peuvent être élargies de manière élastique l’une contre l’autre afin de recevoir la pièce (14) entre leurs côtés intérieurs (30, 32), la partie de base (22) et les branches (24, 26) étant composées d’une première matière plastique relativement dure et une partie anti-glissement (34, 36 ; 60) composée d’une matière plastique relativement souple étant disposée sur au moins une des faces intérieures (30, 32).
EP09777671A 2008-08-07 2009-08-05 Attache en matière plastique Withdrawn EP2324255A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008038871A DE102008038871A1 (de) 2008-08-07 2008-08-07 Kunststoffclip
PCT/EP2009/005668 WO2010015393A1 (fr) 2008-08-07 2009-08-05 Attache en matière plastique

Publications (1)

Publication Number Publication Date
EP2324255A1 true EP2324255A1 (fr) 2011-05-25

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EP09777671A Withdrawn EP2324255A1 (fr) 2008-08-07 2009-08-05 Attache en matière plastique

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US (1) US8578571B2 (fr)
EP (1) EP2324255A1 (fr)
DE (1) DE102008038871A1 (fr)
WO (1) WO2010015393A1 (fr)

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US20110154623A1 (en) 2011-06-30
US8578571B2 (en) 2013-11-12
DE102008038871A1 (de) 2010-02-11
WO2010015393A1 (fr) 2010-02-11

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