Structurally reinforced hollow element and vehicle body comprising the same
By inserting bolts between the wall portions of the hollow components in the vehicle body to form a total gap, the problem of easy tearing of hollow cavity components under high loads is solved, achieving a lightweight and high-strength vehicle body structure, and enhancing the vehicle's stability and energy absorption capacity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- FORD GLOBAL TECH LLC
- Filing Date
- 2019-02-22
- Publication Date
- 2026-07-14
AI Technical Summary
Existing hollow components in car bodies are prone to premature tearing under high loads, resulting in insufficient stability and energy absorption capacity, making it difficult to simultaneously meet the requirements of lightweight and high strength.
The design employs a structurally reinforced hollow element. Bolts are inserted between the wall portions of the hollow element, with the bolt heads protruding beyond the openings in the wall portions. The second axial end is fixed to the opposite wall portion, forming a total gap to resist axial displacement. The components are connected by welding or other methods to ensure stability under high loads.
It improves the stability and energy absorption capacity of hollow components under high loads, prevents premature tearing, and achieves a lightweight and high-strength body structure suitable for mass production.
Smart Images
Figure CN110203285B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a structurally reinforced hollow element, particularly a hollow element for a vehicle body. The invention also relates to a vehicle body having a hollow element. Background Technology
[0002] In a preferred embodiment, vehicle panels, particularly those forming the vehicle body, are designed to be thin within the vehicle structure to reduce weight and fuel consumption, among other things. However, this process conflicts with stringent requirements for the safety of vehicle passengers, which are influenced to some extent by vehicle body stability. Therefore, typically heavily loaded body sections are reinforced with additional measures.
[0003] For example, US 2016 / 0123057 A1 (also DE 20 2014 008 599 U1) shows a structural reinforcement for a door frame composed of various sheet metal parts. The structural reinforcement is located in the hinge area of the door frame. In this connection, a hollow element comprising walls and surrounding a cavity is reinforced by a sleeve that passes through the cavity and is inserted into the hollow element between two diameter-opposite wall portions supported on the sleeve. As a result, a higher load-bearing receiving area is formed in the door frame for the connection between the door and the door frame.
[0004] US 9,051,958 B2 discloses a blind-hole rivet threaded bolt comprising a blind-hole rivet insert having internal threads through which the external threads of a threaded bolt can be moved to engage in the blind-hole rivet insert by tightening. By screwing the threaded bolt into the blind-hole rivet insert, it is compressed under plastic deformation. When the blind-hole rivet insert undergoes plastic deformation, a flat element disposed between the bolt head of the threaded bolt and radially outwardly projecting material is clamped in such a way that it can be securely fixed to, for example, a wall.
[0005] FR 2 848 355 B1 illustrates a freely rotatable roller for an alternator, which is fastened (to the roller) to a motor by threaded bolts. In this connection, the roller hub is mounted on a cylindrical bolt head between two bolt collars spaced apart from each other and protruding radially beyond the bolt's reach, thus fixing the roller in place to prevent large axial displacement.
[0006] US 2010 / 0202856 A1 describes a threaded connection for securing a fuel distribution rod to the cylinder head of an internal combustion engine in a liquid-tight manner.
[0007] US 7 153 054 B2 (also DE 60 2005 001 799 T2) discloses another type of threaded connection for attaching non-metallic parts to metallic parts.
[0008] US 9 610 904 B2 (also DE 20 2013 103 548 U1) shows a pusher with overtravel stop.
[0009] Among the many commercially available threaded bolts (e.g., those known), there is also a bolt collar and a threaded portion, the bolt collar protruding radially outward beyond the bolt head, the bolt head being attached to a first axial bolt end and protruding radially outward beyond the bolt head, and the threaded portion being disposed on a second axial bolt end and spaced apart from the first axial bolt end. Such bolts can be obtained, for example, from Taixin Hardware Co., Ltd. in China, under the product name TX-S935.
[0010] Especially in vehicle structures, structural cavity components or elements are frequently used, for example, in vehicle bodies, to achieve lighter vehicle weight while simultaneously meeting stringent safety requirements. These are preferably implemented from metal sheets having a single housing or multiple housings (e.g., two housings), with one or more walls, such as double walls. Typically, such cavity components completely surround the cavity, particularly on all sides. However, they can also simply comprise a closed cross-section, for example, implemented in a tubular manner with a substantially circular, elliptical, or angled cross-section and open on the sides. The cavity elements primarily and importantly offer the advantage of being constructed in a smooth and simultaneously robust manner.
[0011] Structural cavity components typically include welds, for example, to join two shell components together material-to-material. It has been shown that during welding, high heat locally penetrates the sheet metal forming the cavity component, causing localized material weakening in the weld area. Consequently, the cavity component loses strength, for example, in the area around the weld point in a spot weld, which can lead to premature tearing of the cavity component under extreme loads. This high load can occur, for example, in a vehicle collision, where the cavity component undergoes significant plastic deformation. Premature tearing of the cavity component results in a loss of the effective cross-section formed by the intact cavity component, causing the cavity component to absorb only a relatively small amount of energy.
[0012] In addition to the previously used terms for cavity components or cavity elements, the term "hollow element" with a broader interpretation is used hereinafter. Such hollow elements include the cavity designs described above, as well as designs with walls that include a non-closed cross-section, such as hollow elements with a U-shaped open cross-section. Summary of the Invention
[0013] In this context, the object of the present invention is to provide, for example, a structurally reinforced hollow element for improving vehicle bodies, and an improved vehicle body having a hollow element, both of which are lightweight yet possess high strength, enabling them to provide high stability even under particularly heavy loads (e.g., in the event of a vehicle collision), and thus, for example, to protect vehicle occupants from injury in an accident due to high energy absorption. Furthermore, the hollow element and the vehicle body should be simple and compact in construction, and can be used in the same simple manner in the mass production of vehicles.
[0014] The objective is achieved through the structurally reinforced hollow element described in this application and the vehicle body having the hollow element described in this application. Further particularly advantageous designs of the invention are disclosed below.
[0015] It must be noted that the features individually stated in the following description can be combined in any technically reasonable manner and demonstrate further designs of the invention. This description is particularly characterized and specified in conjunction with the accompanying drawings.
[0016] According to the invention, hollow elements, particularly for structural reinforcement of vehicle bodies, include walls that at least partially surround the cavity. In this respect, the wall extends three-dimensionally, i.e., in three-dimensional space, it includes a first wall portion having an opening and a second wall portion radially opposite and spaced apart from the first wall portion. In other words, at least a portion of the cavity surrounded by the hollow element lies between the first and second wall portions. Walls that extend flat (i.e., planar) only in two dimensions are not within the scope of this invention; however, U-shaped walls, for example, that can be seen in cross-section, are within the definition because the two wall portions forming the corresponding free U-shaped legs are positioned radially opposite each other, such that a portion of the cavity surrounded by said wall lies between said two wall portions.
[0017] The cross-section formed by the wall of another hollow element can usually be realized in a polygonal manner, such as in a rectangle, square, trapezoid, triangle, etc., where the lateral direction can be closed or opened, as long as there are two wall portions arranged radially opposite each other at a certain interval, such that a part of the cavity is disposed between them.
[0018] Furthermore, the structurally reinforced hollow element according to the invention includes a bolt with a bolt head at its first axial bolt end. This bolt head protrudes radially beyond the head-side bolt portion and includes a diameter larger than the opening in the first wall portion, through which the bolt is pushed. A second axial bolt end of the bolt, away from the head-side first bolt end, is fixed to the second wall portion in a manner resisting axial displacement. A total clearance is maintained between the outer surface of the first wall portion and the radial surface of the bolt head facing said outer surface.
[0019] In other words, the bolt, attached to the second wall portion via its second axial end in a manner resisting axial displacement, has a long axial length such that the bolt head, or the radial surface of the bolt head facing the outer surface of the first wall portion, includes a net distance to the outer surface of the first wall portion. This space between the outer surface of the first wall portion and the radial surface of the bolt head should be understood here as the total clearance or net distance, which is simply filled by the ambient atmosphere of the hollow element. In the case of the hollow element according to the invention, no permanent, direct, or indirect contact (e.g., by means of an intermediate plate or gasket) is provided between the radial surface of the bolt head and the outer surface of the first wall portion.
[0020] As for the addition of an intermediate plate or shim between the bolt head and the first wall portion, this is possible within the scope of the invention and will be included in the definition given above. In this case, the distance between the radial surface of the bolt head and the outer surface of the first wall portion is designed such that the distance is greater than the thickness of the added intermediate plate (in the axial direction of the bolt), so that in all cases, even when an intermediate plate is added, a total clearance or net distance is maintained between the radial surface of the bolt head and the outer surface of the first wall portion.
[0021] Fastening the end of the second bolt to the second wall portion in a manner that resists axial displacement can be achieved as a material-to-material bond and / or in a non-forced locking manner, such as by welding, bonding, riveting, tightening, clamping (e.g., by press fit, etc.). This type of fastening can be achieved, for example, on the inner surface of the second wall portion, which can be achieved without significant expense, particularly when the hollow element has an open cross-section, such as a substantially U-shaped cross-section.
[0022] On the one hand, it can be seen that a particular advantage of the structurally reinforced hollow element according to the invention is that the structural reinforcement brought about by the bolts has no negative impact on the stability of the hollow element for properly receiving and transmitting normal force loads (the hollow element is designed for the aforementioned purposes). In particular, the net distance between the bolt head and the first wall portion ensures that the effects of the hollow element applied to it by the bolts are not weakened, for example, due to the (high) tensile force / stress applied by the bolts between the first and second wall portions in the form of undesirable deformation of the hollow element's walls, during the installation of the bolts on the hollow element or during proper use of the hollow element under normal conditions. The total clearance between the bolt head and the first wall portion ensures that, under normal load conditions, no such force is transmitted from the bolts to the walls of the hollow element.
[0023] However, if the force acting on the hollow element exceeds its dimensionally stable load limit and introduces irreversible, permanent plastic deformation of the hollow element (as may occur in the case of a vehicle collision), the first wall portion moves into contact with the bolt head due to its deformation. The radial surface of the bolt head facing the outer surface of the first wall portion then moves into a form-locking abutment against the first wall portion. When the bolt is secured to the second wall portion in a manner that resists axial displacement, the bolt or bolt head prevents large-scale deformation of the hollow element in the axial direction of the bolt, which in particular prevents premature tearing of the hollow element. The hollow element, structurally reinforced in this way, can thus transfer the forces acting on it to other structures during its longer period of plastic deformation and additionally absorb a larger portion of energy due to its own plastic deformation.
[0024] Especially under the heaviest loads causing plastic deformation of the hollow element, the increased strength of the hollow element is achieved in a simple manner by bolts with only a small increase in weight, making it suitable for mass production. Therefore, no expensive structural modifications to the hollow element itself are required, such as increasing its wall thickness, changing its geometry, adding additional reinforcing ribs and / or reinforcing flanges, so that the structurally reinforced hollow element according to the invention can also be implemented in a compact manner, and requires virtually no larger installation space compared to conventional structural hollow elements.
[0025] As described above, the structurally reinforced hollow element according to the invention, for example when used in a vehicle structure, generally imparts greater stability to the vehicle, which provides enhanced stability for vehicle passengers (especially in the event of a vehicle collision) because the structurally reinforced hollow element has a high energy absorption capacity.
[0026] In addition, the present invention provides the further advantage that even existing conventional hollow elements can be transformed into structurally reinforced hollow elements according to the invention at a very low structural cost. For this purpose, only one opening is introduced into the first wall portion forming the hollow element, through which a bolt, as described above and including a bolt head, can be pushed, and the second axial end of the bolt is fixed in a manner resisting axial displacement on a second wall portion radially opposite to the first wall portion. This structural reinforcement of conventional hollow elements is easy to implement and does not require any substantially expensive design changes to the hollow element itself, particularly, for example, without increasing wall thickness or altering the geometry, without adding additional reinforcing ribs and / or the like.
[0027] According to an advantageous design of the invention, the second wall portion also includes an opening through which the bolt is pushed, that is, essentially the second axial bolt end is pushed through the opening. Thus, the bolt protrudes beyond the outer surface of the second wall portion with its second bolt end passing through the opening, allowing the second bolt end to be fastened to the second wall portion along its outer surface in a manner resistant to axial displacement without significant cost, for example using the fastening techniques already mentioned above.
[0028] According to another advantageous design of the invention, the total clearance between the radial surface of the bolt head and the outer surface of the first wall portion has a value greater than 0, preferably between about 0.5 mm and about 10 mm, more preferably between about 1 mm and about 7 mm, and even more preferably between about 1.5 mm and about 5 mm. In this way, on the one hand, substantially defect-free interaction between the bolt and the wall of the hollow element can be ensured for conventional loads on the hollow element (i.e., when its wall is just undergoing plastic deformation), and on the other hand, with the occurrence of plastic deformation, the structural reinforcing effect of the bolt on the wall of the hollow element can develop in a completely targeted manner from a certain degree of deformation. Tolerances can be conveniently compensated for using the total clearance while preventing any prestress applied to the hollow structure.
[0029] Another advantageous design of the invention provides that the bolt includes a bolt collar in the region of its second bolt end, the bolt collar protruding radially beyond the bolt portion and abutting against the inner surface of the second wall portion in said region. Therefore, the axial position required to achieve the structurally reinforcing effect of the bolt described herein can be precisely fixed in a particularly simple manner. This simplifies mounting the bolt to the wall of the hollow element in a considerably larger manner, since the bolt collar must always be moved to abut against the inner surface of the second wall portion to fix the required net distance between the bolt head and the first wall portion.
[0030] In a particularly simple manner, the net distance between the bolt head and the first wall portion can also be varied by adding one or more intermediate plates, washers, or shims between the inner surfaces of the bolt collar and the second wall portion. Thus, for example, the same bolt can be used on different hollow elements according to the invention for structural reinforcement, even though their first and second wall portions are spaced apart from each other, for example, by different intervals.
[0031] Clearly, the opening in the first wall portion includes a diameter that is larger on the one hand than the diameter of the bolt collar so that the bolt and its bolt collar can be pushed through the opening together; however, on the other hand, it includes a diameter smaller than that of the bolt head or its radial surface.
[0032] According to another advantageous design of the invention, the bolt includes a threaded portion in the region of its second axial bolt end, through which the bolt is fastened to the second wall portion in a manner resisting axial displacement. A thread complementary to the bolt's thread, used to thread the bolt onto the second wall portion in a manner resisting axial displacement, may be integrally implemented with the second wall portion (e.g., on the inner or outer surface of the second wall portion) or may be provided by a separate nut. In the latter case, the second wall advantageously includes the aforementioned through-hole, such that the second axial bolt end is pushed through the through-hole, and the nut can be screwed from the outer surface of the second wall portion onto the thread implemented on the second axial bolt end. For more secure axial fixation of the nut on the second bolt end, threaded to the outside of the hollow element, the bolt preferably includes a bolt collar as described above as a support, the bolt collar moving to abut against the inner surface of the second wall portion.
[0033] Another advantageous design of the invention provides that the bolt includes a threadless bolt portion abutting a radial surface of the bolt head facing the outer surface of the first wall portion. The bolt portion preferably includes a substantially smooth, for example, cylindrical surface. This ensures that the inner edge of the opening in the first wall portion does not move into an undesirable engagement with the bolt. For example, if the threaded portion of the bolt extends upwards to the radial surface of the bolt head and the bolt (having a structurally reinforced hollow element intended for use) is excited to generate radial vibration, this could lead to contact between the threaded portion and the inner edge of the opening in the first wall portion.
[0034] Another advantageous design of the invention provides that the wall of the hollow element at the location of the bolt (i.e., particularly along the central axis of the bolt) comprises a closed cross-section, simply put, except for the opening in the first wall portion and the opening in the second wall portion (if present). In other words, the cross-section of the hollow element according to the design can be described by a closed guide (simply except for one or two openings). Subsequently, at a radial distance from the central axis of the bolt (which at least exceeds the radius of the opening in the first wall portion), the profile of the wall cross-section is completely closed by the structurally reinforced hollow element according to the design and can be described by a closed guide. Within the meaning of the invention, the guide may also include curved portions as well as substantially straight portions.
[0035] As mentioned elsewhere in this document, the cross-section of the wall of the structurally reinforced hollow element according to the invention can also be open, for example, it can be implemented in a U-shape. Additionally, the wall can be implemented in a manner known per se, having one or more housings (e.g., having two housings).
[0036] According to another advantageous design of the invention, the walls of the structurally reinforced hollow element are formed of a metallic material. Steel and aluminum are particularly preferred as metallic materials. For example, the walls can be formed from one or more metal steel plates, high-strength steel (HSS), or ultra-high-strength steel (UHSS) to obtain the high strength inherent in the hollow element walls themselves. Other materials are also conceivable, such as plastic materials and / or fiber-reinforced plastics; glass fiber, carbon fiber, and / or aramid fiber can be used as reinforcing fibers. Non-removable or removable joints can be provided as connectors; welded connections, jointed connections, riveted connections, or screw connections are suitable options.
[0037] According to another advantageous design of the invention, the wall includes at least one weld. For example, the ends of the single-shell design of the entire wall of the hollow element according to the invention can be joined together material-to-material on the longitudinal side by welding (e.g., spot welding) along the connecting and / or reinforcing flanges, such that the wall of the hollow element includes a closed cross-section. In a similar manner, walls consisting of multiple shells (especially two shells) can also be joined together by welding (e.g., spot welding) at corresponding flanges for joining together. As already explained herein, localized material weakening may occur in the area of the weld or weld point due to welding and the resulting high heat locally penetrating the wall material. The structurally reinforcing effect of the bolts according to the invention can at least compensate for said material weakening, such that the hollow element according to the invention, structurally reinforced in this way, includes sufficiently high strength despite welding. According to the invention, premature tearing of the wall or wall portions of the hollow element under particularly high force inputs (e.g., in the case of a vehicle collision) can be effectively prevented, thereby effectively preventing the hollow element from being able to counteract the high resistance to plastic deformation during the longer period of said plastic deformation due to its substantially intact effective cross-section. In a particularly preferred manner, one or more such bolts are arranged in the area of the weld of the hollow element.
[0038] According to another aspect of the invention, a vehicle body is provided, the vehicle body comprising at least one hollow element of a lightweight and structurally robust design for the vehicle body. According to the invention, the hollow element is implemented as a structurally reinforced hollow element according to one of the above-described designs. Attached Figure Description
[0039] Further features and advantages of the invention arise from the following description of exemplary embodiments of the invention, which should not be construed as limiting and are explained in more detail below with reference to the accompanying drawings, wherein the descriptions are illustrative:
[0040] Figure 1 A perspective view of a portion of the outer surface of a vehicle body according to an exemplary embodiment of the present invention is shown, which includes structurally reinforced hollow elements according to an exemplary embodiment of the present invention;
[0041] Figure 2 It shows Figure 1 A perspective view of the inner surface of a portion of the vehicle body, which has Figure 1 The structurally reinforced hollow element shown;
[0042] Figure 3 It shows Figure 1 A cross-sectional view of the structurally reinforced hollow element; and
[0043] Figure 4 It shows Figure 1Another cross-sectional view of the structurally reinforced hollow element. Detailed Implementation
[0044] Functionally equivalent parts are always given the same reference numerals in the various figures, so that they are usually described only once.
[0045] Figure 1 A schematic perspective view of a portion of the outer surface of an exemplary embodiment of a vehicle body 1 according to the present invention is shown. The vehicle body 1, not shown in detail, includes at least one structurally reinforced hollow element 2 of an exemplary embodiment of the present invention. The area of the hollow element 2 seen here is... Figure 1 The middle part is represented by a box shown with dashed lines.
[0046] Figure 1 An exemplary embodiment of the hollow element 2 shown is a double-shell hollow element 2, which includes walls formed by two separate wall shells 3 and 4 (e.g., upper shell 3 and lower shell 4). The walls 3 and 4 of the hollow element 2 are shown in the exemplary embodiment to be made of metallic material (particularly high-strength steel material (e.g., HSS or UHSS)).
[0047] from Figure 1 It can also be seen that the two wall shells 3 and 4 are joined together material-to-material along two connecting flanges 5, which extend substantially in the longitudinal direction of the hollow element 2 and also provide structural reinforcement to the hollow element 2 to form the entire wall 3, 4 of the hollow element 2. To join the two wall shells 3 and 4 in a material-to-material manner, they are joined together by spot welding along the connecting flanges 5. The individual weld points 6 are located at... Figure 1 Enclosed in a circle or ellipse.
[0048] Figure 1 The bolt head 7 of bolt 8 is also shown, and bolt 8 is in... Figure 1 Further details are not shown in the text (see below). Figure 2 ).
[0049] Figure 2 It shows Figure 1 A perspective view of the inner surface of a portion of the vehicle body 1, which has Figure 1 The hollow element 2 shown is structurally reinforced. Figure 2 The axial end of the bolt 8 and the nut 9 screwed onto the axial end of the bolt 8 are shown.
[0050] Figure 3 and Figure 4 They are shown respectively Figure 1 A cross-sectional view of the structurally reinforced hollow element 2. Figure 3The wall of the hollow element 2, formed by the two walled shells 3 and 4, is clearly shown to surround the cavity 10. Figure 3 It is also shown that another wall 11 is arranged in the cavity 10 inside the walls 3 and 4 of the hollow element 2, so that the hollow element 2 can also be referred to as a double-walled hollow element 2. However, the second wall 11 arranged inside the wall shells 3 and 4 is not absolutely necessary. It can provide an additional increase in the strength of the hollow element 2. However, the effect according to the invention has already been obtained due to the interaction between the walls 3 and 4 and the bolts 8, so the wall 11 will not be discussed further below.
[0051] Figure 3 The walls 3 and 4 are shown extending three-dimensionally in space, such that they include a first wall portion 12 and a second wall portion 13, the second wall portion 13 being radially opposite to and spaced apart from the first wall portion. In the case of the embodiment of the hollow element 2 shown here, the first wall portion 12 is part of the first wall housing 3, and the second wall portion 13 is part of the second wall housing 4.
[0052] in addition, Figure 3 An opening 14 in the first wall portion 12 and another opening 15 in the second wall portion 13 are shown. The bolt 8 is pushed through both openings 14 and 15. In addition to openings 14 and 15, walls 3 and 4 are located at the position of the bolt 8 (in... Figure 3 The cross section (represented in the diagram) is more or less along the central axis of bolt 8 and includes a substantially closed cross section.
[0053] from Figure 3 It can also be seen that the bolt head 7 is arranged on the first axial bolt end A1 of the bolt 8. The bolt head 7 protrudes in the radial direction beyond the head-side bolt range and includes a diameter D1 that is significantly larger than the diameter D2 of the opening 14 in the first wall portion 12.
[0054] Bolt 8 includes a threaded portion 16 on its second axial bolt end A2, which is located away from the first bolt end A1. Nut 9 is screwed onto the threaded portion 16. Additionally, bolt 8 includes a bolt collar 17 in the region of its second bolt end A2, which protrudes radially beyond the bolt portion in the region, and as shown in… Figure 3 It can be clearly seen that it is close to the inner surface 18 of the second wall portion 13.
[0055] As in Figure 3 As clearly shown separately, the bolt collar 17 is arranged on the bolt 8 between the threaded portion 16 and the bolt head 7. In order to enable the bolt 8 and its collar 17 to be pushed through the opening 14 in the first wall portion 12, the diameter D2 is larger than the diameter D3 of the bolt collar 17.
[0056] As the nut 9 is screwed onto the threaded portion 16 of the bolt 8 and abuts against the outer surface 19 of the second wall portion 13, and the bolt collar 17 abuts against the inner surface 18, the bolt 8 is fixed to the second wall portion 13 in a manner that resists axial displacement.
[0057] like Figure 3 As clearly shown separately, once the bolt 8 has been mounted on the second wall portion 13 in a manner that resists axial displacement, a total clearance M is maintained between the outer surface 20 of the first wall portion 12 and the radial surface 21 of the bolt head 7 facing the outer surface. This total clearance M is greater than 0 and, in a particularly preferred manner, is in the range of approximately 1 mm to approximately 5 mm.
[0058] in addition, Figure 3 In an exemplary embodiment of the hollow element 2 shown, the bolt 8 includes a threadless cylindrical or tapered bolt portion 22 adjacent to the radial surface 21 of the outer surface 20 of the bolt head 7 facing the first wall portion 12. The bolt portion may extend to the bolt collar 17. The bolt portion 22 is not strictly limited to a cylindrical or tapered cross-section, but may include any suitable cross-section, provided that the selected cross-section can transmit the corresponding force.
[0059] The structurally reinforced hollow element and body according to the present invention are not limited to the embodiments disclosed herein, but also include other equivalent operational embodiments formed by a further technically meaningful combination of the features of both the hollow element and the body described herein.
[0060] In a preferred embodiment, the structurally reinforced hollow element according to the invention is used in a vehicle body, such as a single-track or multi-track vehicle. A vehicle body according to the invention comprising at least one structurally reinforced hollow element according to the invention is preferably used in a vehicle (e.g., a single-track or multi-track vehicle).
[0061] List of reference numerals in the attached diagram:
[0062] 1. Body
[0063] 2. Structurally reinforced hollow components
[0064] 3. First shell wall and upper shell wall
[0065] 4. Second shell wall and lower shell wall
[0066] 5 connecting flanges
[0067] 6 welding points
[0068] 7 bolt heads
[0069] 8 bolts
[0070] 9 nuts
[0071] 10 cavity
[0072] 11 walls
[0073] 12 First Wall Section
[0074] 13 Second Wall Section
[0075] 14 First Opening
[0076] 15 Second opening
[0077] 16 threaded portion
[0078] 17 Bolt Collar
[0079] 1813 inner surface
[0080] 1913 outer surface
[0081] 2012's outer surface
[0082] 217 radial surface
[0083] 22 Unthreaded Bolt Section
[0084] A1 First Axial Bolt End
[0085] A2 Second Axial Bolt End
[0086] Diameter of D17
[0087] Diameter of D214
[0088] The diameter of D317
[0089] M Total Clearance / Net Distance
Claims
1. A structurally reinforced hollow element, characterized in that, The hollow component is used in the vehicle body (1), and the hollow component includes: The walls (3, 4) at least partially surround the cavity (10), wherein the walls (3, 4) extend three-dimensionally in such a way that they include a first wall portion (12) having a first opening (14) and a second wall portion (13) radially opposite to and spaced from the first wall portion; and The bolt (8) includes: a bolt head (7) at a first axial bolt end (A1) of the bolt (8), the bolt head (7) protruding in the radial direction beyond the head-side bolt range, the bolt head (7) having a diameter (D1) larger than the first opening (14) in the first wall portion (12), and the bolt (8) being pushed through the first opening (14) of the first wall portion (12); a second axial bolt end (A2) away from the first axial bolt end (A1), the second axial bolt end (A2) being fixed to the second wall portion (13) in a manner resisting axial displacement, and maintaining a total clearance (M) between the outer surface (20) of the first wall portion (12) and the radial surface (21) of the bolt head (7) facing the outer surface.
2. The hollow element according to claim 1, Its features are, The second wall portion (13) also includes a second opening (15) through which the bolt (8) is pushed.
3. The hollow element according to claim 2, Its features are, The total clearance (M) includes values in the range of 0.5 mm to 10 mm.
4. The hollow element according to claim 3, Its features are, The bolt (8) includes a bolt collar (17) in the region of its second bolt end (A2), the bolt collar (17) protruding in the radial direction beyond the bolt and abutting against the inner surface (18) of the second wall portion (13).
5. The hollow element according to claim 4, Its features are, The bolt (8) includes a threaded portion (16) in the region of its second axial bolt end (A2), and the bolt (8) is secured to the second wall portion (13) by means of the threaded portion (16) in a manner that resists axial displacement.
6. The hollow element according to claim 5, Its features are, The bolt (8) includes a threadless bolt portion (22) that is adjacent to the radial surface (21) of the bolt head (7) facing the outer surface (20) of the first wall portion (12).
7. The hollow element according to claim 6, Its features are, Apart from the first opening (14) in the first wall portion (12) and the second opening (15) in the applicable second wall portion (13), the walls (3, 4) include a closed cross section at the location of the bolt (8).
8. The hollow element according to claim 7, Its features are, The walls (3, 4) are formed of metallic material.
9. The hollow element according to claim 8, Its features are, The walls (3, 4) include at least one weld (6).
10. A vehicle body having at least one hollow element (2), Its features are, The hollow element (2) is a structurally reinforced hollow element according to any one of the preceding claims 1-9.