Abstract
A plastic component with at least one fastening element attached to the plastic component, wherein the fastening element comprises at least one attachment section for attachment to the plastic component and at least one fastening section for fastening a part to be mounted on the plastic component, wherein the plastic component is composed of a plastic matrix, wherein the attachment section of the fastening element is integrated in a first area of the plastic matrix, and wherein reinforcement fibers are integrated in a second, different area of the plastic matrix, wherein the attachment section of the fastening element comprises at least one form element projecting from a surface of the attachment section, wherein the at least one form element is integrated in the first area of the plastic matrix.
Claims
1. An assembly, comprising: a plastic component with at least one fastening element attached to the plastic component, wherein the fastening element comprises at least one attachment section for attachment to the plastic component and at least one fastening section for fastening a part to be mounted on the plastic component, wherein the plastic component is composed of a plastic matrix, wherein the attachment section of the fastening element is integrated in a first area of the plastic matrix, and wherein reinforcement fibres are integrated in a second, different area of the plastic matrix, wherein the attachment section of the fastening element comprises at least one form element projecting from a surface of the attachment section, wherein the at least one form element is integrated in the first area of the plastic matrix, wherein the form element comprises a lattice structure.
2. The assembly as claimed in claim 1, wherein the fastening element consists of a plastic material.
3. The plastic component as claimed in claim 1, wherein the attachment section of the fastening element comprises at least one sealing element.
4. The assembly as claimed in claim 1, wherein the attachment section is a circular disk.
5. The assembly as claimed in claim 1, wherein the attachment section is part of a monolithic component.
6. A method for producing an assembly comprising a plastic component with at least one fastening element attached to the plastic component, in particular a plastic component as claimed in claim 1, comprising the steps: a. at least one fastening element is inserted into a first area of a forming cavity of a casting mold with an attachment section, wherein a fastening section of the fastening element is separated from the forming cavity, b. reinforcement fibres are inserted into a second, different area of the forming cavity of the casting mold, c. a plastic matrix is introduced into the forming cavity in a flowable state, wherein the attachment section of the fastening element is integrated in a first area of the plastic matrix, and wherein the reinforcement fibres are integrated in a second, different area of the plastic matrix, d. the plastic matrix is hardened and the plastic component is demolded from the casting mold together with the fastening element.
7. The method as claimed in claim 6, wherein the attachment section of the fastening element comprises at least one sealing element, wherein the sealing element seals the fastening section with regard to the forming cavity when inserted in the forming cavity of the casting mold.
8. An assembly, comprising: a plastic component with at least one fastening element attached to the plastic component, wherein the fastening element comprises at least one attachment section for attachment to the plastic component and at least one fastening section for fastening a part to be mounted on the plastic component, wherein the plastic component is composed of a plastic matrix, wherein the attachment section of the fastening element is integrated in a first area of the plastic matrix, and wherein reinforcement fibres are integrated in a second, different area of the plastic matrix, wherein the attachment section of the fastening element comprises at least one form element projecting from a surface of the attachment section, wherein the at least one form element is integrated in the first area of the plastic matrix, wherein the form element includes a crisscross structure.
Description
(1) Exemplary embodiments of the invention are explained in more detail below by way of figures, in which:
(2) FIG. 1 shows a perspective view of a schematic representation of a fastening element of a plastic component as claimed in the invention according to a first exemplary embodiment,
(3) FIG. 2 shows a perspective view of a schematic representation of a fastening element of a plastic component as claimed in the invention according to a second exemplary embodiment,
(4) FIG. 3 shows a perspective view of a schematic representation of a fastening element of a plastic component as claimed in the invention according to a third exemplary embodiment,
(5) FIG. 4 shows a perspective view of a schematic representation of a fastening element of a plastic component as claimed in the invention according to a fourth exemplary embodiment,
(6) FIG. 5 shows a perspective view of a schematic representation of a fastening element of a plastic component as claimed in the invention according to a fifth exemplary embodiment,
(7) FIG. 6 shows a side view of a schematic representation of the fastening element from FIG. 5,
(8) FIG. 7 shows a perspective view of a schematic representation of a fastening element of a plastic component as claimed in the invention according to a sixth exemplary embodiment,
(9) FIG. 8 shows a perspective view of a schematic representation of a fastening element of a plastic component as claimed in the invention according to a seventh exemplary embodiment,
(10) FIG. 9 shows a sectional view of a schematic representation of the fastening element from FIG. 8,
(11) FIG. 10 shows a perspective view of a schematic representation of a fastening element of a plastic component as claimed in the invention according to an eighth exemplary embodiment,
(12) FIG. 11 shows a sectional view of a schematic representation of the fastening element from FIG. 10,
(13) FIG. 12 shows a perspective view of a schematic representation of a fastening element of a plastic component as claimed in the invention according to a ninth exemplary embodiment,
(14) FIG. 13 shows a perspective view of a schematic representation of a fastening element of a plastic component as claimed in the invention according to a tenth exemplary embodiment,
(15) FIG. 14 shows a schematic representation of a sectional view of a fastening element of a plastic component as claimed in the invention according to an eleventh exemplary embodiment,
(16) FIG. 15 shows a perspective view of a schematic representation of a fastening element of a plastic component as claimed in the invention according to a twelfth exemplary embodiment,
(17) FIG. 16 shows a sectional view of a schematic representation of a fastening element of a plastic component as claimed in the invention according to a thirteenth exemplary embodiment,
(18) FIG. 17 shows a sectional view of a schematic representation of a plastic component as claimed in the invention according to a first exemplary embodiment,
(19) FIG. 18 shows a sectional view of a schematic representation of a plastic component as claimed in the invention according to a second exemplary embodiment,
(20) FIG. 19 shows a sectional view of a schematic representation of a plastic component as claimed in the invention according to a third exemplary embodiment and
(21) FIG. 20 shows a sectional view of a schematic representation of a plastic component as claimed in the invention according to a fourth exemplary embodiment.
(22) Insofar as nothing to the contrary is specified, identical references in the figures designate identical objects. FIG. 1 shows a fastening element of a plastic component as claimed in the invention. In the example shown, the fastening element has a disk-shaped attachment section 10 for attachment to the plastic component and a fastening section, in the present case a threaded bolt 12, which extends centrally from a surface of the attachment section 10, in FIG. 1 the underside of the attachment section 10. In the example shown in FIG. 1, several form elements 14 project from the surface 16 of the attachment section 10 which faces away from the threaded bolt 12, in FIG. 1 the top side of the attachment section 10. The form elements 14 in FIG. 1 each have a T-shaped cross section, the webs of the form elements 14 with the T-shaped cross section extending perpendicularly from the surface 16 of the attachment section 10 such that the flange of the respective T-profile is provided on the end of the respective web 14 which faces away from the surface 16. In the example shown, three form elements 14 which extend parallel with respect to one another and one form element 14 which extends at a right angle crosswise with respect to said form elements 14 are provided.
(23) FIG. 2 shows another exemplary embodiment of a fastening element as claimed in the invention which corresponds extensively to the exemplary embodiment in FIG. 1. Contrary to FIG. 1, however, the fastening element from FIG. 2 has several form elements 18 which have an I-profile in cross section. The form elements 18 are realized in each case in the manner of a web, a total of four form elements 18 being provided, two of which in each case extend parallel with respect to one another, the one pair of parallel extending form elements 18 extending crosswise perpendicularly to the other pair of parallel extending form elements 18. In the case of the exemplary embodiment according to FIG. 2, holes 20 are realized over and above this in at least some of the form elements 18.
(24) FIG. 3 shows another exemplary embodiment of a fastening element as claimed in the invention which, once again, is extensively similar to the exemplary embodiment according to FIG. 1. Contrary to FIG. 1, however, the form elements 22 in the case of the exemplary embodiment according to FIG. 3 are triangular in cross section, the tip of the triangle in cross section being connected to the surface 16 of the attachment section 10. The form elements 22, which are triangular in cross section, form between them funnel-shaped recesses. The exemplary embodiment according to FIG. 4 is extensively similar to the exemplary embodiment according to FIG. 3, unlike FIG. 3, in the case of the exemplary embodiment according to FIG. 4 a latching element 24 with a T-shaped cross section being provided as the fastening section in place of the threaded bolt 12.
(25) FIGS. 5 and 6 show a further exemplary embodiment of a fastening element as claimed in the invention. Once again this latter corresponds extensively to the exemplary embodiment according to FIG. 1. Unlike FIG. 1, however, the fastening element from FIGS. 5 and 6 comprises only one form element 26 in the form of a disk 26 which is arranged parallel to the surface 16 of the attachment section 10 and at a distance therefrom. The disk 26 is connected to the disk-shaped attachment section 10 by means of a central column-like connecting section 28. As can be seen in particular in FIG. 5, several holes 30 are realized in the disk 26. In the case of the exemplary embodiment according to FIG. 7, a latching ball 32 is provided as the fastening section in place of the threaded bolt 12 in FIGS. 5 and 6. For the rest, the exemplary embodiment according to FIG. 7 is similar to the exemplary embodiment according to FIGS. 5 and 6.
(26) The fastening elements shown in FIGS. 1 to 7 can consist, for example, in one piece of a plastic material, produced, for example, using a plastic material injection molding method. The fastening elements shown can comprise in each case a threaded bolt 12, a latching section 24 which is T-shaped in cross section or a latching ball 32 as the fastening section. They can also have other fastening sections. A part to be fastened to the plastic component is mounted on said fastening sections in operation in a manner known per se. It must also be pointed out that the holes 20 or 30, shown as an example in the case of the fastening elements from FIGS. 2 and 5 to 7, can obviously also be provided in the case of the form elements 14 or 22 of the fastening elements shown in FIGS. 1, 3 and 4.
(27) Different developments of sealing elements of the fastening elements are now to be explained by way of FIGS. 8 to 16. The sealing elements are explained as an example by way of a fastening element, as is shown in FIG. 2. However, they can also be provided in the same way in the case of the fastening elements shown in FIGS. 1 and 3 to 7 and can be combined in an arbitrary manner with the fastening elements.
(28) In the case of the exemplary embodiment according to FIGS. 8 and 9, a sealing lip 34 extends hood-like on the underside and over the circumference of the disk-shaped attachment section 10 away from the underside of the disk-shaped attachment section 20. The sealing lip 34 can be elastic and can have been sprayed onto the fastening element, for example using a two-component injection molding method. An alternative development of a sealing lip which extends over the circumference of the disk-shaped attachment section 10 is shown in FIGS. 10 and 11 with the reference 36. Starting from the bottom edge of the disk-shaped attachment section 10, said sealing lip 36 extends in a bowl-like manner in the direction of the form elements 18. The sealing lip 36 can also be elastic and, for example, can have been sprayed onto the fastening element using a two-component injection molding method.
(29) FIGS. 12 to 14 show developments where a sealing element is realized integrally on the fastening element and is in particular from the same material as the fastening element. Correspondingly, the fastening elements according to FIGS. 12 to 14 can be produced in one piece with their respective sealing element using a plastic material injection molding method. In the case of the exemplary embodiment according to FIG. 12, the disk-shaped attachment section 10 comprises, on its underside which faces away from the form elements 18, a ring-shaped circumferential sealing bead 38. In the case of the exemplary embodiments according to FIGS. 13 and 14, contrary to this, a double sealing edge is provided which also runs around in a ring-shaped manner on the underside of the disk-shaped attachment section 10 which faces away from the form elements 18. It forms a sealing groove 40. It must be pointed out that the exemplary embodiments according to FIGS. 13 and 14 are completely the same as one another apart from the fact that the fastening element according to FIG. 13 comprises a threaded bolt 12 as the fastening section and the fastening element according to FIG. 14 comprises a latching ball 32 as the fastening section.
(30) In the case of the exemplary embodiment according to FIG. 15, on the underside of the disk-shaped attachment section 10 which faces away from the form elements 18 there is once again a ring-shaped circumferential elastic sealing lip 42 which extends downward in a hood-like manner in the exemplary embodiment shown in FIG. 15. In the case of the exemplary embodiment according to FIG. 16, a sealing lip 44, which extends downward over the circumference of the disk-shaped attachment section 10, that is away from the form elements 18, is provided, said sealing lip being realized in the manner of a bellows. The sealing lips 42, 44 shown in FIGS. 15 and 16, once again, can be elastic and, for example, can have been sprayed onto the respective fastening element using a two-component injection molding method.
(31) The production as claimed in the invention of a plastic component as claimed in the invention with a fastening element integrated therein is now to be explained by way of FIGS. 17 to 20. The plastic component and a tool for the production, in particular a casting mold, are only shown in part in this case. In FIG. 17, the fastening element shown in FIG. 14 is integrated in a plastic component as an example. To this end, the fastening element is inserted into the forming cavity of a casting mold shown with the reference 46. In particular, the fastening element with its attachment section 10 and its form elements 18 is inserted into a first area of the molding cavity of the casting mold. The fastening section, in particular the latching ball 32, is separated from the forming cavity when the fastening element is inserted. In particular, the latching ball 32 is situated in a cavity 48 which is separated from the forming cavity of the casting mold 46. Reinforcement fibers are introduced into a second area of the forming cavity of the casting mold 46. The forming cavity is then filled with a flowable plastic matrix, a first area 50 of the plastic matrix and a second area 52 of the plastic matrix being formed. The fastening element is integrated with its attachment section 10, in particular with its form elements 18, into the first area 50 of the plastic matrix. The reinforcement fibers, on the other hand, are integrated into the second area 52 of the plastic matrix. No reinforcement fibers are provided in the first area 50 of the plastic matrix. Once the plastic matrix has hardened, the plastic component, formed in particular by the second area 52 of the plastic matrix, together with the fastening element, which is connected to the plastic matrix by means of the first area 50 of the plastic matrix, are able to be removed from the casting mold 46.
(32) The sealing element, in FIG. 17 in the form of the sealing groove 40, together with a corresponding sealing projection of the casting mold 46, prevents the plastic matrix flowing into the cavity 48 of the casting mold 46 and consequently to the latching ball 32 during casting. Over and above this, the plastic matrix also flows in the first area 50 right through the holes 20 of the form elements 8 and hardens therein. This causes the fastening element to interlock with the plastic component.
(33) In the example shown in FIG. 18, a fastening element as is shown in principle in FIG. 16 has been used, the fastening element in FIG. 18 comprising a latching ball 32 as the fastening section in place of the threaded bolt 12. It can be seen in FIG. 18 that when inserted in the casting mold 46 the bellows-like sealing lip 44 is folded up further. This means that the achieved sealing of the cavity 48 and consequently of the latching ball 32 in relation to the forming cavity of the casting mold 46 is improved even further. For the rest, the production of the plastic component in the case of the exemplary embodiment according to FIG. 18 is similar to the exemplary embodiment according to FIG. 17.
(34) FIG. 19 shows a further exemplary embodiment where the fastening element shown in FIGS. 10 and 11 is used, this one, however, comprising a latching ball 32 in place of the threaded bolt 12. Once again, it can be seen that when inserted into the casting mold 26, the sealing lip 36 is somewhat deformed and even better sealing is achieved in this way. For the rest, the exemplary embodiment according to FIG. 19 is similar to the exemplary embodiments shown in FIGS. 17 and 18.
(35) Finally, FIG. 20 shows an exemplary embodiment where a fastening element as is shown in principle in FIG. 12 is used, once again a latching ball 32 being provided in place of the threaded bolt 12 shown in FIG. 12. The sealing is achieved in this case by means of the sealing bead 38 and a corresponding sealing groove in the casting mold 46. For the rest, said exemplary embodiment once again corresponds to the exemplary embodiment from FIG. 17.
(36) It must be pointed out that the fastening elements shown in FIGS. 17 to 20 are illustrated purely as examples. In the same way, the remaining fastening elements as claimed in the invention and shown in the figures are able to be integrated in the plastic component in the manner explained.
