Mounting arrangement

Abstract

Fastening arrangement (1), comprising a first fastening part (2) designed as a retaining clip and a second fastening part (3), which second fastening part (3) has a securing dome (9) projecting therefrom, wherein the first fastening part (2) and the second fastening part (3) each comprise a first fastening section, wherein the two fastening parts (2, 3) are or can be fastened to one another via their respective first fastening sections, wherein, starting from the state in which the two fastening parts (2, 3) are fastened to one another via the respective first fastening sections, the securing dome (9) can be moved from a first securing position of the fastening arrangement (1), in which the securing dome (9) rests against a first stop section on the first fastening part (2) formed by an outer edge of the first fastening part (2), into a second securing position of the fastening arrangement (1),in which the securing dome (9) is moved into the first fastening part (2) in such a way that the first fastening part (2) is spread open at least in sections, wherein the first fastening part (2) has a base body which is symmetrical with respect to an axis of symmetry, which base body, viewed in cross section, has: , - a head region (5) comprising two head region sections (5a, 5b) each extending in a cross-sectionally widening manner, - a body region (6) adjoining the head region (5), comprising two body region sections (6a, 6b) each reducing the cross-section, and - a foot region (7) adjoining the body region (6), comprising two foot region sections (7a, 7b) each extending radially outward with respect to the axis of symmetry of the base body, wherein a mounting fastening section is formed between the foot region (7) and the body region (6), which mounting fastening section is intended to engage positively in a mounting opening (12) provided on a third fastening part (4) in an installed position of the fastening arrangement (1), wherein for transferring the fastening arrangement (1) from the first to the second securing position, it is provided that the movement of the securing dome (9) takes place perpendicular to the axis of symmetry of the first fastening part (2),wherein in the first and second securing positions of the fastening arrangement (1), a positive-locking holding of the first fastening part (2) and the second fastening part (3) fastened thereto is provided in the mounting opening (12) of the third fastening part (4).

Description

[0001] The invention relates to a fastening arrangement comprising a first fastening part designed as a retaining clip and a second fastening part, which second fastening part has a securing dome projecting therefrom, wherein the first fastening part and the second fastening part each comprise a first fastening section, wherein the two fastening parts can be fastened or are fastened to one another via their respective first fastening sections.

[0002] Corresponding fastening arrangements are known per se, particularly in the field of automotive engineering, and are used in particular to create a stable fastening of at least two fastening parts to one another. The fastening of the two fastening parts typically occurs via the interaction of first fastening sections formed on the respective fastening parts.

[0003] A first fastening part is typically designed as a retaining clip, and a second fastening part is typically designed as a fastening lug formed integrally with an interior trim element of a motor vehicle. The generally detachable fastening of the two fastening parts is generally achieved by a foot region on the retaining clip engaging positively with a receiving region on the fastening lug side.

[0004] In the event of a collision, particularly a side collision, between a motor vehicle equipped with a corresponding fastening arrangement and a third object, the fastening parts must be secured to each other and to a third fastening part belonging to a vehicle body shell in such a way that none of the fastening parts is moved uncontrollably into the passenger compartment due to the collision. There is a constant need for development regarding such a fastening of corresponding fastening parts to each other.

[0005] The invention is therefore based on the object of providing an improved fastening arrangement.

[0006] The object is achieved according to the invention by a fastening arrangement of the type mentioned at the outset in that, starting from the state in which the two fastening parts are fastened to one another via the respective first fastening sections, the securing dome can be transferred from a first securing position of the fastening arrangement, in which the securing dome rests on a first stop section on the first fastening part formed by an outer edge of the first fastening part, into a second securing position of the fastening arrangement, in which the securing dome of the second fastening part is moved into the first fastening part in such a way that the first fastening part is spread open at least in sections compared to the first securing position.

[0007] The fastening arrangement according to the invention represents an improved principle for preventing an uncontrolled movement, in particular due to a collision, of at least one of the fastening parts belonging to the motor vehicle equipped with the fastening arrangement according to the invention, in particular into a passenger compartment of a motor vehicle equipped with the fastening arrangement according to the invention. In the event that the fastening arrangement according to the invention is installed in a motor vehicle, the fastening parts belonging to the fastening arrangement according to the invention are therefore fastened to one another in such a way that no fastening part is moved uncontrolled into the passenger compartment in the event of a collision, in particular a lateral collision, of the motor vehicle equipped with the fastening arrangement or a fastening arrangement according to the invention.In particular, the risk that a fastening part, in particular a second fastening part, is moved into the head area of ​​a vehicle occupant, which leads to serious injuries to the vehicle occupant, is prevented or at least reduced.

[0008] The first fastening part of the fastening arrangement according to the invention is a retaining clip, particularly one that is omega-shaped when viewed cross-sectionally or from the side. The first fastening part is typically manufactured as a stamped / bent part from a metallic material, particularly sheet steel.

[0009] The second fastening part of the fastening arrangement according to the invention is typically a fastening projection of an interior trim element for the interior of a motor vehicle, in particular an interior trim element for covering an A, B, or C pillar of a motor vehicle. The second fastening part designed as a fastening projection is typically formed or formed integrally with the interior trim element. The second fastening part is therefore typically assigned or associated with an interior trim element for the interior of a motor vehicle, in particular an interior trim element of an A, B, or C pillar of a motor vehicle. The second fastening part is typically manufactured as an injection-molded part from a thermoplastic material.

[0010] The first fastening part, designed as a retaining clip, has a first fastening section, by means of which it can be fastened or is fastened, typically detachably, to the second fastening part. The second fastening part also has a first fastening section, by means of which it can be fastened or is fastened, typically detachably, to the first fastening part. The two fastening parts are fastened to one another by means of their respective first fastening sections. Due to the structural design of the two fastening parts with respective first fastening sections, a releasable, positive-locking fastening of the two fastening parts to one another can be realized or achieved in particular by the respective first fastening sections interacting to form a positive lock, i.e. in particular by engaging one another in a positive-locking manner.

[0011] The second fastening part also has a securing dome, typically pin-shaped or cylindrical, that protrudes therefrom, particularly axially. The securing dome can therefore be designed or considered as an extension or projection of the second fastening part and extends the second fastening part by an amount determined by its dimensions.

[0012] The fastening arrangement according to the invention can be brought into or transferred into two different securing positions, apart from an assembly position explained in more detail below, in which it is fastened to a shell of a vehicle body. In other words, the fastening arrangement according to the invention is structurally designed such that, apart from a corresponding assembly position, it can be brought into or transferred into two different securing positions. When the fastening arrangement is installed in a motor vehicle, the transfer of the fastening arrangement according to the invention into the respective securing positions occurs in particular through the forces acting on the vehicle body and thus also on the fastening parts belonging to the fastening arrangement as a result of a collision.

[0013] In the first securing position of the fastening arrangement, the securing dome formed on the second fastening part rests against a first stop section on the first fastening part formed by an outer or lateral edge of the first fastening part. The first and second fastening parts are therefore moved relative to one another in the first securing position, which, as mentioned, occurs in particular in the event of a lateral collision of a motor vehicle equipped with the fastening arrangement according to the invention, such that the second fastening part, i.e. the securing dome associated with the second fastening part, rests or strikes against the first fastening part, i.e. against an outer or lateral edge of the first fastening part.

[0014] In the second securing position of the fastening arrangement, the securing dome formed on the second fastening part is moved into the first fastening part, i.e. is located at least partially within the first fastening part, such that the first fastening part is or will be spread open, at least partially, in particular in comparison to the first securing position of the fastening arrangement. The spreading open of the first fastening part requires special securing of the two fastening parts which are still fastened to one another, in that the first fastening part, due to the spreading, widens cross-sectionally in such a way that it cannot be moved, or at least not completely, from the bodyshell of the vehicle body or cannot be detached, or at least not completely, from the bodyshell of the vehicle body. Accordingly, the second fastening part which is still fastened to the first fastening part cannot be moved, or at least not completely, from the bodyshell of the vehicle body.at least not completely moved or detached from the body shell of the vehicle body.

[0015] The transfer of the fastening arrangement from the assembly position into the first securing position and the second securing position occurs, as mentioned, in particular in the event of a collision of a motor vehicle equipped with the fastening arrangement according to the invention, ie the forces acting on the vehicle body and on the fastening parts belonging to the fastening arrangement.

[0016] In terms of construction, the first fastening part, designed as a retaining clip, is particularly configured such that it has a base body that is symmetrical with respect to an axis of symmetry. The first fastening part is thus a symmetrical component. This is particularly evident in a preferred omega-shaped structural design of the first fastening part.

[0017] In a preferred embodiment of the first fastening part, the base body has a head region, a body region adjoining the head region, and a foot region adjoining the body region. Since the first fastening part is typically an integral component, the body region thus merges into the body region, and the body region correspondingly merges into the foot region, and vice versa.

[0018] The head region of the base body or of the first fastening part preferably comprises two head region sections that extend in a cross-sectionally widening manner. The head region sections thus each extend at an incline or slant with respect to the axis of symmetry of the base body such that they expand the cross-section of the base body or of the first fastening part, in particular continuously, in the direction of the body region. The head region sections are connected to one another at the head region-side end of the base body. The head region is typically the longest region of the base body. Relative to the axis of symmetry of the base body, the length of the head region is typically greater than the length of the body region and the foot region combined.

[0019] The body region of the base body or of the first fastening part preferably comprises two body region sections, each of which extends in a cross-sectionally reducing manner. The body region sections thus each extend at an inclination or oblique angle with respect to the axis of symmetry of the base body such that they reduce the cross-section of the base body or of the first fastening part in the direction of the foot region, in particular continuously. The angles of inclination of the body region sections with respect to the axis of symmetry of the base body can correspond in magnitude to the angles of inclination of the head region sections with respect to the axis of symmetry. The transition from the respective body region sections to the respective head region sections, and thus the transition from the body region to the head region, is typically recognizable by a corresponding kink on the first fastening part.

[0020] The foot region of the base body or the first fastening part comprises two foot region sections, each extending radially outward relative to the axis of symmetry of the base body. The foot region sections form a base for the first fastening part, on which it can be placed on a level surface. The transition from the respective foot region sections to the respective body region sections, and thus the transition from the foot region to the body region, is recognizable by a corresponding waistline of the first fastening part. The first fastening part can have the smallest cross-section in the area of ​​this waistline.

[0021] The foot region of the base body or of the first fastening part forms in particular the first fastening section of the first fastening part, ie via the foot region sections a, in particular detachable, fastening of the first fastening part to the second fastening part, and vice versa, and thus a, in particular detachable, fastening of the two fastening parts to one another is possible.

[0022] The preferred structural design of the first fastening part described above typically has the shape of an omega, which is why the first fastening part can be regarded as a so-called omega clamp, at least in this preferred embodiment.

[0023] In a preferred embodiment, at least two, in particular four, barb elements are further arranged on the edge of the head region of the base body, which barb elements extend beyond the base body at the edge and expand or widen the base body when viewed cross-sectionally. Due to the symmetrical design of the base body, two barb elements are typically provided on each of the two outer or lateral edges of the head region. The barb elements therefore structurally result in an expansion or widening of the cross section of the head region and thus of the base body as a whole. The barb elements structurally result in an expansion or widening of the longitudinal section of the head region and thus typically of the base body as a whole, since they are arranged or formed on the edge, i.e. on the outer or lateral edges of the head region of the base body.From a functional perspective, the barb elements serve, in particular, to prevent the first fastening part and thus also the second fastening part attached to it from moving out or detaching from a body shell of a vehicle body when the fastening arrangement according to the invention is installed in a motor vehicle. The first fastening part and thus also the second fastening part attached to it are thus positively secured to the body shell of the vehicle body via the barb elements, particularly in the event of a collision involving a motor vehicle equipped with the fastening arrangement.

[0024] In a further development of this preferred embodiment, the first stop section of the first fastening part is formed by the lateral edges of the barb elements, and a second stop section of the first fastening part, which is located further inward than the first knock-off section and against which the securing dome rests in the second securing position, is formed by the lateral edges of the base body located in the head region of the base body. The second fastening part, or the securing dome associated therewith, therefore strikes the barb elements at the edges in the first securing position, i.e. at the outer or lateral edges of the barb elements, and in the second securing position, due to the relative movement of the two fastening parts to one another when the fastening arrangement is transferred from the first to the second securing position, it strikes the edges in the head region of the base body, i.e. at the outer orlateral edges of the head area of ​​the base body.

[0025] Preferably, a mounting fastening section is formed between the foot region and the body region of the base body, which mounting fastening section is intended to engage in a positive-locking manner in or through a mounting opening provided on a third fastening part when the fastening arrangement is in an installed position. Therefore, the above-mentioned installed position of the fastening arrangement is preferably defined such that the mounting fastening section, typically formed in the transition region between the foot region and the body region, is held or mounted in a positive-locking manner in a corresponding mounting opening of a third fastening part, which can thus also form a component of the fastening arrangement according to the invention. The mounting fastening section of the base body or of the first fastening part is thus formed in particular in or by the above-described waist of the base body or of the first fastening part.

[0026] The third fastening part, or the mounting opening formed therein, is typically formed as a part of or on a part of a body shell of a vehicle body. Thus, the body shell of a vehicle body or a part of it can also constitute a component of the fastening arrangement according to the invention.

[0027] The mounting opening formed in the third fastening part is preferably T-shaped. The mounting opening thus has the shape of a "T" and thus an elongated first mounting opening section and a second mounting opening section running transversely thereto. Corresponding to the T-shape, the first mounting opening section is longer than the second mounting opening section. The two mounting opening sections communicate with each other, i.e., they merge directly into one another.

[0028] The length or length dimension of the short section, i.e. the second mounting opening section, of the T-shaped mounting opening is preferably dimensioned such that it does not fall below the maximum span or width, viewed in cross-section, between the free ends of the barb elements formed on the head region. The maximum span or width, viewed in cross-section, of the barb elements formed on the head region is therefore greater than the length or length dimension of the short section of the mounting opening. This ensures that removal of the first fastening part, which is held or mounted in a form-fitting manner in the mounting opening, from the mounting opening is only possible by reducing the cross-sectional maximum span or width of the free ends of the barb elements formed on the head region. The reduction of the cross-sectional maximum span orThe width of the free ends of the barb elements formed on the head region typically requires at least partial reshaping of the head region, i.e. of corresponding barb elements formed thereon, which is in particular only possible by at least partial damage or destruction of the head region or corresponding barb elements formed thereon.

[0029] Preferably, in the first securing position of the fastening arrangement, the first fastening part is pulled out of the mounting opening such that, compared to the mounting position of the fastening arrangement, at least the body region is pulled through the mounting opening. The first securing position of the fastening arrangement is therefore characterized not only by the fact that the securing dome of the second fastening part bears against a first stop section on the first fastening part formed by the outer or lateral edge of the first fastening part, but also by the fact that the first fastening part is or will be pulled out of the mounting opening, at least in sections, axially with respect to its axis of symmetry. Corresponding forces, in particular tensile forces, typically occur in the event of a collision involving a motor vehicle equipped with the fastening arrangement according to the invention.The energy introduced into the vehicle body by the collision is thus at least partially absorbed in the region of the fastening arrangement by the first fastening part and the second fastening part attached to it being pulled out of the mounting opening by a certain amount. With reference to a state of the fastening arrangement installed in the interior of a motor vehicle, the body region and typically also parts of the head region of the first fastening part are thus at least partially pulled out of the mounting opening in the first securing position of the fastening arrangement and are thus located outside the mounting opening.

[0030] By means of corresponding barb elements projecting from the edge of the head region of the first fastening part, securing fastening sections can be formed, which are intended to prevent further or complete withdrawal of the first fastening part from the mounting opening of the third fastening part. The barb elements therefore ensure a positive holding or mounting of the first fastening part and the second fastening part fastened to it in the mounting opening of the third fastening part even in the first securing position of the fastening arrangement. The first and second fastening parts fastened to one another are therefore generally not completely "torn" out of the mounting opening in the first securing position of the fastening arrangement in the event of a collision of a motor vehicle equipped with the fastening arrangement according to the invention.The spreading of the first fastening part in the second securing position of the fastening arrangement also requires further stabilization of the positive holding or mounting of the first fastening part and thus also of the second fastening part fastened to it in the mounting opening of the third fastening part.

[0031] In a further preferred embodiment, at least one securing wall forming a predetermined breaking point is provided on the second fastening part, wherein the securing wall is arranged and designed such that it is destroyed when the fastening arrangement is transferred from the first securing position to the second securing position. The destruction of the securing wall, which occurs during the transfer of the fastening arrangement from the first securing position to the second securing position and which typically forms a stop surface for the first fastening part, i.e. in particular for the outer or lateral edges of the foot region sections belonging to the foot region of the base body, in the assembly position or the first securing position of the fastening arrangement, likewise absorbs part of the energy introduced into the vehicle body in the event of a collision of a motor vehicle equipped with the fastening arrangement according to the invention.The safety wall is destroyed by the safety dome destructively penetrating it during the movement of the safety dome during the transfer of the fastening arrangement from the first securing position to the second securing position. This results in the absorption of energy introduced into the vehicle body during a collision, as described above.

[0032] In a further preferred embodiment, the securing dome has at least one shoulder forming a counter-stop section in the region of its free end. In the first securing position of the fastening arrangement, the counter-stop section formed by the shoulder rests on the edge of the first fastening part, i.e., on the first stop section formed by an outer or lateral edge of the first fastening part, which is formed in particular by an outer or lateral edge of a corresponding barb element.

[0033] If the first fastening part is formed with corresponding barb elements, the at least one shoulder in the first securing position of the fastening arrangement typically rests against the first stop section formed by the outer or lateral edge of the first fastening part formed by the barb elements, and in the second securing position of the fastening arrangement, it rests against the second stop section formed by the edge of the first fastening part formed by the head region of the base body. The counter-stop section formed by the shoulder therefore rests or strikes, in the first securing position of the fastening arrangement, against the outer or lateral edges of corresponding barb elements that widen or expand the first fastening part in longitudinal section.In the second securing position of the fastening arrangement, the counter-stop section is located at least partially within the first fastening part, i.e., in particular, within corresponding barb elements or between corresponding barb elements, which leads to the described spreading of the first fastening part. In the second securing position of the fastening arrangement, the counter-stop section typically lies or abuts against the outer or lateral edges of the head region of the base body of the first fastening part.

[0034] In a further preferred embodiment, the securing dome has at least one guide lug projecting radially therefrom. The guide lug is typically formed between corresponding counter-stop sections of the securing dome, as described above and formed by corresponding shoulders. The guide lug faces the first fastening part, so that it can protrude, at least in sections, between corresponding barb elements of the base body, at least when transferring the fastening arrangement from the first to the second securing position, possibly even in the assembly position.

[0035] In a further development of this preferred embodiment, the fastening arrangement according to the invention can therefore be designed such that the guide lug projects between the barb elements in the first securing position of the fastening arrangement and between the head region sections forming the head region of the base body in the second securing position of the fastening arrangement. The guide lug is therefore located at least partially within the first fastening part in the first securing position and typically also in the assembly position of the fastening arrangement, i.e. in particular within corresponding barb elements or between corresponding barb elements. In the second securing position of the fastening arrangement, the guide lug is moved into the head region of the base body of the first fastening part and likewise contributes to the described spreading of the first fastening part or causes this.

[0036] The invention further relates to a motor vehicle comprising at least one fastening arrangement as described above. The fastening arrangement serves in particular for holding, supporting, or securing an interior trim element to a body shell of the vehicle body. A second fastening part of the fastening arrangement according to the invention is therefore typically designed as a fastening projection associated with an interior trim element, in particular for covering an A-, B-, or C-pillar, of a motor vehicle. With regard to the motor vehicle according to the invention, all statements regarding the fastening arrangement according to the invention apply analogously.

[0037] Further advantages, features, and details of the invention will become apparent from the exemplary embodiments described below and from the drawings. Herein: Fig. 1 - 8 each show a schematic diagram of a fastening arrangement according to an embodiment of the invention; Fig. 9, Fig. 10 each shows a schematic diagram of a first fastening part of a fastening arrangement according to an embodiment of the invention; Fig. 11 is a schematic diagram of a second fastening part of a fastening arrangement according to an embodiment of the invention; Fig. 12 is a schematic diagram of a third fastening part of a fastening arrangement according to an embodiment of the invention; and Fig. 13 - 16 each show a schematic diagram of a fastening arrangement according to an embodiment of the invention in the context of disassembly of a first and second fastening part from a third fastening part.

[0038] The Fig. 1 - 8 each show a schematic diagram of a fastening arrangement 1 according to an embodiment of the invention. Fig. 1, Fig. 3, Fig. 5, Fig. 7 each show perspective views of the fastening arrangement 1, the Fig. 2, Fig. 4, Fig. 6, Fig. 8 each show cross sections of the fastening arrangement 1 along the Fig. 1, Fig. 3, Fig. 5, Fig. 7 cutting lines shown.

[0039] The fastening arrangement 1 comprises a first fastening part 2, a second fastening part 3 and a third fastening part 4.

[0040] The first fastening part 2 is an omega-shaped, typically metallic, retaining clip, viewed from the side or in cross-section. As can be seen from the figures showing the first fastening part 2 separately, Fig. 9, Fig. 10, where Fig. 9 a perspective view and Fig. 10 shows a side view of the first fastening part 2, the first fastening part 2 is a component that is symmetrical with respect to an axis of symmetry A.

[0041] As can be seen in particular from Fig. 9, the first fastening part 2 can be functionally and structurally divided or subdivided into three areas, namely a head area 5, a body area 6 adjoining the head area 5, and a foot area 7 adjoining the body area 6. Since the first fastening part 2 is an integral component, typically manufactured by punching / bending processes, the head area 5 thus merges into the body area 6, and the body area 6 correspondingly merges into the foot area 7.

[0042] The head region 5 comprises two head region sections 5a, 5b that extend in a cross-sectionally widening manner. The head region sections 5a, 5b each extend at an incline or slant with respect to the axis of symmetry A of the base body of the first fastening part 2 such that they continuously expand the cross-section of the first fastening part 2 in the direction of the body region 6. The head region sections 5a, 5b are connected to one another at their head region-side ends. The head region 5 is clearly the longest region of the first fastening part 2. Relative to the axis of symmetry A, the length dimension of the head region 5 is clearly greater than the length dimension of the body region 6 and the foot region 7 combined. Of an exemplary total height of the first fastening part 2 of approximately 17 mm, the head region 5 can, for example, take up approximately 12 mm.

[0043] It is evident that barb elements 5c are formed on the edge of the head region 5. As can be seen from the Fig. 9, Fig. 10, the barb elements 5c thus extend the base body of the first fastening part 2, defined by the head region 5, the body region 6 and the foot region 7, both in the length and width directions. The extension of the base body of the first fastening part 2 in the length direction is particularly evident from Fig. 9. Based on Fig. 10 it can also be seen that the barb elements 5c extend the head region 5 of the base body in the width direction, ie widen it cross-sectionally.

[0044] The distance between the free ends of the barb elements 5c and the transition area between the head region 5 and the body region 6, which is recognizable by the kink, can be, for example, approximately 5 mm, based on the aforementioned exemplary total height of the first fastening part 2 of approximately 17 mm. The transition from the respective body region sections 6a, 6b to the respective head region sections 5a, 5b, and thus the transition from the body region 6 to the head region 5, and vice versa, can be recognized by a corresponding kink in the first fastening part 2.

[0045] The body region 6 comprises two body region sections 6a, 6b, each extending in a cross-sectionally reducing manner. The body region sections 6a, 6b each extend at an inclination or slant with respect to the axis of symmetry A of the first fastening part 2 such that they continuously reduce the cross-section of the first fastening part toward the foot region. The angles of inclination of the body region sections 6a, 6b with respect to the axis of symmetry A of the first fastening part 2 can correspond in magnitude to the angles of inclination of the head region sections 5a, 5b with respect to the axis of symmetry A.

[0046] The foot region 7 comprises two foot region sections 7a, 7b, each extending radially outward relative to the axis of symmetry A of the first fastening part 2. The foot region sections 7a, 7b form a base for the first fastening part 2. The first fastening part 2 can be placed on the base on a flat surface.

[0047] The transition from the respective foot region sections 7a, 7b into the respective axially adjacent body region sections 6a, 6b, and thus the transition from the foot region 7 into the body region 6, and vice versa, can be seen by a waist of the first fastening part 2. It is evident that the first fastening part 2 has the smallest cross-section in the region of this waist, apart from the connecting region of the head region sections 5a, 5b.

[0048] The base region 7 of the first fastening part forms a first fastening section. Through the interaction of the first fastening section of the first fastening part 2 formed by the base region 7 with a corresponding first fastening section of the second fastening part 3, a releasable, positive-locking fastening of the two fastening parts 2, 3 to one another is possible, as will be explained below.

[0049] In the second fastening part 3, which is in Fig. 11 is shown separately in a plan view, it is a fastening attachment associated with an interior trim element 8 for covering an A-pillar of a motor vehicle (not shown). As can be seen, for example, from Fig. 1, Fig. 3, Fig. 5, Fig. 7, the second fastening part 3 protrudes from the interior trim element 8. The second fastening part 3 and the interior trim element 8 are integrally formed from a plastic material.

[0050] As can be seen from Fig. 2, Fig. 4, the described releasable form-fitting fastening of the two fastening parts 2, 3 to one another is realized in that the foot region sections 7a, 7b of the first fastening part 2 engage in a form-fitting manner in groove-like receptacles (not further designated) provided for this purpose in the second fastening part 3 and thus in a receiving area on the fastening attachment side.

[0051] The second fastening part 3 comprises a substantially cylindrical securing dome 9. The securing dome 9 is designed such that it has a guide lug 10 projecting radially therefrom and counter-stop sections formed by shoulders 11a, 11b. The function of the guide lug 10 and the counter-stop sections formed by the shoulders 11a, 11b will be explained in more detail below. The second fastening part 3 further comprises a securing wall 13 designed as a predetermined breaking point, the function of which will also be explained in more detail below.

[0052] The third fastening part 4, which is in Fig. 12 is shown separately in a plan view, comprises a mounting opening 12 formed in a shell of a vehicle body. The mounting opening 12 is T-shaped and, due to its geometry, has an elongated first mounting opening section 12a and a second mounting opening section 12b running transversely thereto. Corresponding to the T-shape, the first mounting opening section 12a is longer than the second mounting opening section 12b. The two mounting opening sections 12a, 12b communicate with one another, ie they merge directly into one another.

[0053] The length or length dimension of the second mounting opening section 12b of the mounting opening 12 is dimensioned such that it does not fall below the maximum span or maximum width, viewed cross-sectionally, between the free ends of the barb elements 5c formed on the head region 5 of the first fastening part 2. The maximum span or maximum width, viewed cross-sectionally, between the barb elements 5c is thus greater than the maximum length or length dimension of the second mounting opening section 12b.

[0054] The functional principle of the fastening arrangement 1 is explained below in particular with reference to the Fig. 1 - 8 shown schematic diagrams. The Fig. 1, Fig. 2 each a schematic diagram of the fastening arrangement 1 in a delivery state, the Fig. 3, Fig. 4 each shows a schematic diagram of the fastening arrangement 1 in an assembly position, the Fig. 5, Fig. 6 a schematic diagram of the fastening arrangement 1 in a first securing position and the Fig. 7, Fig. 8 each shows a schematic diagram of the fastening arrangement 1 in a second securing position.

[0055] In the Fig. 1, Fig. In the delivery state of the fastening arrangement 1 shown in Figure 2, the two fastening parts 2, 3 are detachably fastened to one another by means of a corresponding positive engagement of their respective first fastening sections, forming a pre-assembled module. The fastening parts 2, 3 fastened to one another are in a defined spatial arrangement relative to one another in the state in which the fastening arrangement 1 is fastened to one another. The foot region sections 7a, 7b of the base body of the first fastening part 2 lie on the recess formed on the second fastening part 3, in Fig. 11, securing wall 13. It can be seen that the guide lug 10, which projects radially from the securing dome 9 of the second fastening part 3, already engages between the barb elements 5c of the head region of the base body of the first fastening part 2.

[0056] In the Fig. 3, Fig. The mounting position of the fastening arrangement 1 shown in Figure 4 is the one with reference to Fig. 1 mentioned pre-assembled assembly is attached to the third fastening part 4.

[0057] The fastening of the fastening parts 2, 3 or the pre-assembled assembly consisting of these results from the fact that the first fastening part 2 is in the direction of the Fig. 1, Fig. 2 shown arrow P1 engages positively through the mounting opening 12 formed in the third fastening part 4. The thus formed, in particular in Fig. 4, positive locking results from the fact that on the part of the first fastening part 2 between the body area 6 and the foot area 7, ie in the area of ​​the waist of the first fastening part 2, a mounting fastening section is formed, which, as can be seen in particular from Fig. 4, requires a stable mounting or storage of the pre-assembled module on the third fastening part 4. The mounting fastening section of the first fastening part 2 thus engages in the Fig. 3, Fig. 4 shown mounting position of the fastening arrangement 1 in a form-fitting manner through the mounting opening 12 formed in the third fastening part 4.

[0058] As shown by Fig. 3, the securing dome 9 of the second fastening part 3 also passes through the assembly opening 12 of the third fastening part 4 and, in the assembly position of the fastening arrangement 1, lies on the Fig. 3 right edge of the mounting opening 12, ie the right edge of the first mounting opening section 12a.

[0059] In the Fig. 5, Fig. 6, which initially occurs in the event of a collision, in particular a lateral collision, of the motor vehicle equipped with the fastening arrangement 1, the first fastening part 2 and thus also the second fastening part 3 fastened thereto are pulled out of the mounting opening 12 of the third fastening part 4 by a certain amount due to the forces acting on the fastening arrangement 1 during the collision, as indicated by the arrow P2.

[0060] It can be seen that in the first securing position of the fastening arrangement 1, in particular the body region 6 of the first fastening part 2 is pulled out of the assembly opening 12 of the third fastening part 4, which is a significant difference compared to the Fig. 3, Fig. 4. The body area 6 is in particular adapted to the distance between the Fig. 10 shown kink in the transition area between the head area 5 and the body area 6 of the first fastening part 2 and the free ends of the barb elements 5c are pulled out of the mounting opening 12.

[0061] Nevertheless, in the first securing position of the fastening arrangement 1, the two fastening parts 2, 3 continue to be held or supported in a form-fitting manner in the mounting opening 12 of the third fastening part 4. The form-fitting holding or support of the two fastening parts 2, 3 on the third fastening part is achieved in particular by the barb elements 5c, which positively engage over the edges delimiting the mounting opening 12 in the first securing position of the fastening arrangement 1. The barb elements 5c thus form securing fastening sections, which are intended to prevent the fastening parts 2, 3 fastened to one another from being completely pulled out of the mounting opening 12.

[0062] In the first securing position of the fastening arrangement 1, the securing dome 9 of the second fastening part 3 also typically abuts the outer or lateral edges of the barb elements 5c of the head region 5 of the first fastening part 2. The outer or lateral edges of the barb elements 5c thus form first stop sections against which the securing dome 9, i.e. in particular the counter-stop sections formed by the shoulders 11a, 11b, rest or abut in the first securing position of the fastening arrangement 1.

[0063] In the Fig. 7, Fig. 8 shown second securing position of the fastening arrangement 1, into which the fastening arrangement 1 is subsequently transferred in the event of a corresponding collision of the motor vehicle 1 equipped with it, the second fastening part 3 is or will be in the direction of the Fig. 5 shown arrow P3.

[0064] During the described movement of the second fastening part 3, in which the securing dome 9 is transferred into the head region 5 of the first fastening part 2, the securing wall 13 formed on the second fastening part 3 and serving as a predetermined breaking point is pierced or destroyed, which absorbs part of the energy generated by the collision.

[0065] The securing dome 9 of the second fastening part 3 is located in the second securing position of the fastening arrangement 1 between the barb elements 5c, the guide lug 10 of the second fastening part 3 is located within the head region 5, which overall leads to a spreading of the first fastening part 2, in particular in its head region 5. The spreading of the head region 5 of the first fastening part 2 ensures extremely stable holding or mounting of the two fastening parts 2, 3 in the mounting opening 12, thus preventing the two fastening parts 2, 3 from being "torn" out of the mounting opening 12 and moved uncontrollably into the passenger compartment.

[0066] It can be seen that in the second securing position of the fastening arrangement 1, the shoulders 11a, 11b of the securing dome 9 rest or abut against the outer or lateral edges of the head region 5 and no longer against the outer or lateral edges of the barb elements 5c. The outer or lateral edges of the head region 5 of the base body of the first fastening part 2, which are located further inward than the outer or lateral edges of the barb elements 5c, thus form second abutment sections against which the securing dome 9, i.e. in particular the counter-abutment sections formed by the shoulders 11a, 11b, rest or abut in the second securing position of the fastening arrangement 1.

[0067] Due to the movement of the second fastening part 3, the two fastening parts 2, 3 are thereby pushed due to collision within the assembly opening 12 of the third fastening part 4 in the direction of the Fig. 5, Fig. 12 shown left edge of the mounting opening 12 and strike against it.

[0068] The Fig. 13 - 16 each show a schematic diagram of a fastening arrangement 1 according to an embodiment of the invention in the context of disassembling a first and second fastening part 2, 3 from a third fastening part 4.

[0069] Based on the Fig. In the assembly position of the fastening arrangement 1 shown again in Figure 13, disassembly of the two fastening parts 2, 3 from the third fastening part 4 is only possible by partially destroying the first fastening part 2. First, however, a tensile force indicated by the arrow P4 must be exerted on the two fastening parts 2, 3 in order to move the first fastening part 2 at least partially out of the assembly opening 12 (see Figure 13). Fig. 14).

[0070] As can be seen from Fig. 14, the first fastening part 2, after being partially pulled out of the mounting opening 12 of the third fastening part 4 - similar to the first securing position of the fastening arrangement 1 - is still held in a form-fitting manner in the mounting opening 12 via the barb elements 5c.

[0071] In Fig. 15, the two fastening parts 2, 3, as indicated by the arrow P5, were fastened within the assembly opening 12 of the third fastening part 4 to the Fig. 13 - 16 left edge of the mounting opening 12, so that access to the barb elements 5c is possible with a tool, such as pliers, through the second mounting opening section 12b. The barb elements 5c can thus be deformed or removed, so that the first fastening part 2 can be removed from the mounting opening of the third fastening part 4.

[0072] For this purpose, the fastening of the two fastening parts 2, 3 to each other via their respective first fastening sections must also be released (cf. Fig. 16).

Claims

[1] Fastening arrangement (1), comprising a first fastening part (2) designed as a retaining clip and a second fastening part (3), which second fastening part (3) has a securing dome (9) projecting therefrom, wherein the first fastening part (2) and the second fastening part (3) each comprise a first fastening section, wherein the two fastening parts (2, 3) are or can be fastened to one another via their respective first fastening sections, wherein, starting from the state in which the two fastening parts (2, 3) are fastened to one another via the respective first fastening sections, the securing dome (9) can be moved from a first securing position of the fastening arrangement (1), in which the securing dome (9) rests against a first stop section on the first fastening part (2) formed by an outer edge of the first fastening part (2), into a second securing position of the fastening arrangement (1),in which the securing dome (9) is moved into the first fastening part (2) in such a way that the first fastening part (2) is spread open at least in sections, wherein the first fastening part (2) has a base body which is symmetrical with respect to an axis of symmetry, which base body, viewed in cross section, has: - a head region (5) comprising two head region sections (5a, 5b) each extending in a cross-sectionally widening manner, - a body region (6) adjoining the head region (5), comprising two body region sections (6a, 6b) each extending in a cross-section-reducing manner, and - a foot region (7) adjoining the body region (6), comprising two foot region sections (7a, 7b) each extending radially outward with respect to the axis of symmetry of the base body, wherein a mounting fastening section is formed between the foot region (7) and the body region (6), which mounting fastening section is intended to engage positively in a mounting opening (12) provided on a third fastening part (4) in an installed position of the fastening arrangement (1), wherein for transferring the fastening arrangement (1) from the first to the second securing position, it is provided that the movement of the securing dome (9) takes place perpendicular to the axis of symmetry of the first fastening part (2),wherein in the first and second securing positions of the fastening arrangement (1), a positive-locking holding of the first fastening part (2) and the second fastening part (3) fastened thereto is provided in the mounting opening (12) of the third fastening part (4). [2] Fastening arrangement (1) according to claim 1, characterized by that at least two, in particular four, barb elements (5c) are formed on the head region (5) which project from the edge, widen the base body when viewed in cross section and extend beyond the base body at the edge. [3] Fastening arrangement (1) according to claim 2, characterized bythat the first stop section of the first fastening part (2) is formed by lateral edges of the barb elements (5c) and a second stop section of the first fastening part, which is located further inward than the first knock-off section and against which the securing dome (9) rests in the second securing position of the fastening arrangement (1), is formed by lateral edges of the head region (5) of the base body. [4] Fastening arrangement (1) according to one of the preceding claims, characterized by that the mounting opening (12) formed in the third fastening part (4) is T-shaped. [5] Fastening arrangement (1) according to claim 2 and claim 4, characterized by that a length dimension of a short section of the T-shaped mounting opening (12) is dimensioned such that it does not fall below a maximum span, viewed in cross section, between free ends of the barb elements (5c) formed on the head region (5). [6] Fastening arrangement (1) according to one of the preceding claims, characterized by that the third fastening part (4) is formed as a part of a shell of a vehicle body or in a part of a shell of a vehicle body. [7] Fastening arrangement (1) according to one of the preceding claims, characterized by that the first fastening part (2) is pulled out of the mounting opening (12) in the first securing position of the fastening arrangement (1) in such a way that at least the body region (6) is pulled through the mounting opening (12) compared to the mounting position of the fastening arrangement (1). [8] Fastening arrangement (1) according to claim 2 or claim 2 and one of claims 4 to 7, characterized bythat the barb elements (5c) projecting from the edge of the head region (5) form securing fastening sections which are intended to prevent the first fastening part (2) from being pulled out of the mounting opening (12) of the third fastening part (4). [9] Fastening arrangement (1) according to one of the preceding claims, characterized by that at least one securing wall (13) forming a predetermined breaking point is provided on the second fastening part (3), wherein the securing wall (13) is arranged and designed such that it is destroyed when the fastening arrangement (1) is transferred from the first securing position to the second securing position. [10] Fastening arrangement (1) according to one of the preceding claims, characterized by that the securing dome (9) has at least one shoulder (11a, 11b) forming a counter-stop section in the region of a free end of the securing dome (9). [11] Fastening arrangement (1) according to claim 2 and claim 10, characterized by that the at least one shoulder (11a, 11b) in the first securing position of the fastening arrangement (1) rests on the first stop section formed by the barb elements (5c) of the first fastening part (2) and in the second securing position of the fastening arrangement (1) rests on an edge of the first fastening part (2) formed by the head region (5) of the base body. [12] Fastening arrangement (1) according to claim 10 or 11, characterized by that the securing dome (9) has at least one guide nose (10) projecting radially therefrom. [13] Fastening arrangement (1) according to claim 12 and one of claims 2 or 3, characterized bythat the guide nose (10) projects between the barb elements (5c) in the first securing position of the fastening arrangement (1) and projects between head region sections (5a, 5b) forming the head region (5) of the base body in the second securing position of the fastening arrangement (1). [14] Fastening arrangement (1) according to one of the preceding claims, characterized by that the second fastening part (3) belongs to an interior trim element (8) for an interior of a motor vehicle, in particular an interior trim element of an A-, B- or C-pillar of a motor vehicle. [15] Motor vehicle comprising at least one fastening arrangement (1) according to one of the preceding claims.

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