DE102020003323A1 - Console for attaching a chassis component, and method for producing such a console - Google Patents

Abstract

The invention relates to a bracket (1) for fastening, in particular for fixing, a chassis component (3) to a vehicle body shell (5) or to a strut for the vehicle body shell (5), the bracket (1) being designed to receive a shaft thread, thereby characterized in that the console (1) has a base plate (7) with at least two side elements (9), the base plate (7) having a threaded nut (11) with an internal thread and a collar (13), the threaded nut (11) captive and secure against rotation is inserted into the base plate (7), and at least two of the side elements (9) can be welded to the chassis component (3) or to the vehicle body shell (5), so that the chassis component (3) on the vehicle body shell (5) captive, secure against twisting, in particular fixable.

Description

The invention relates to a bracket for fastening a chassis component to a vehicle bodyshell or to a strut for the vehicle bodyshell, vehicle bodyshell or chassis component with at least one such bracket, and to a method for producing a bracket for fastening a chassis component to a vehicle bodyshell.

In the axle construction of vehicles, detachable connections in the form of screw connections are required to fasten axle components. These are used for assembly and disassembly, as well as for replacement during maintenance work. The complexity of modern axle designs poses a particular challenge, since the screwed connection is only accessible from one side due to the restricted space without greater structural freedom and therefore it is not possible to hold the screw together and the screwed connection is therefore often only possible or accessible from one side . The threaded nut as a screw counter component must therefore be suitably captive and fixed in its position, and be structurally fastened in such a way that it allows the required tightening torque and thus the screw connection fulfills its function.

Solutions which deal with this problem are known from the prior art. For example, weld nuts in various thread dimensions are used in the front and rear axle constructions for problematic screw connections. The welding nut is provided with a corresponding centering collar, which is pre-positioned in the corresponding axis component when joining and is subsequently fixed in a special device by means of a capacitor discharge welding process in the functional position. Another possibility is known through the use of punch rivet nuts. Specially manufactured self-piercing rivet nuts are fed into a bore that was previously tolerated in the axle component, and both connection components are riveted. The fixing process must be checked closely, since it has a significant influence on the durability of the screw connection and the achievable tightening torque.

From the German published application DE 10 2004 030 965 A1 A locking washer is known, in particular for securing a shaft nut on a shaft thread against automatic loosening, the locking washer on the one hand having at least a first form-locking element that is in operative connection with a complementary element on the shaft thread and locks the locking washer on the shaft thread in a rotationally secure manner and on the other hand at least a second Has positive locking element, which is in operative connection with a complementary element on the shaft nut and locks the shaft nut against rotation to the shaft thread. At least one second positive locking element of the locking washer is connected to the locking washer via a separate hinge made of a shape memory alloy such that the second positive locking element can be moved automatically from a non-locking position into a locking position connected to the complementary element of the shaft nut when a predetermined operating temperature of the shaft nut connection is reached.

From the German published application DE10 2011 112 056 A1 an alignment / fixing device for aligning a gearbox relative to an axle of a motor vehicle and for fastening the gearbox to the axle is known, with a base plate into which a nut having an internal thread is pressed captively and non-rotatably, with a pressed-in relative position A position of the gearbox to the axis is defined for the nut to the base plate. In this way, on the one hand simple and on the other hand very precise alignment of the transmission to a drive train can be achieved.

However, it is disadvantageous from the prior art that, in the known screwing applications, a separate production and storage and logistics holder are required to provide the threaded nut, so-called welded rivet nuts. Furthermore, during the welding process, heat input at the joint is to be expected, which has an influence on the material structure of the components. Due to the temperature situation during welding, there are traces of welding smoke on the screw components, which in the often subsequent coating / painting process lead to coating problems on the screw components. Preventive after-treatment to eliminate them is cost-intensive and makes the construction more expensive. The production of the punch rivet nuts for the area of riveting with the other joining component is also cost-intensive. Different sheet metal parameters, as well as sheet thicknesses must be precisely coordinated.

The invention is therefore based on the object of providing a bracket for fastening a chassis component to a vehicle bodyshell or on a strut for the vehicle bodyshell, vehicle bodyshell or chassis component with at least one such bracket, and a method for producing a bracket for fastening a chassis component to a vehicle bodyshell, wherein the disadvantages mentioned do not occur.

The object is achieved by creating the subject matter of the independent claims. Advantageous refinements result from the subclaims.

The object is achieved in particular by providing a bracket for attaching, in particular for fixing, a chassis component to a vehicle body-in-white or to a strut for vehicle body-in-white, the console being designed to accommodate a shaft thread. The console has a base plate with at least two side elements, the base plate having a threaded nut with an internal thread and a collar, the threaded nut being inserted captively and non-rotatably into the base plate, and wherein at least two of the side elements are integrated on the chassis component or on the vehicle body shell or can be welded, so that the chassis component can be secured, in particular fixed, in a captive and torsion-proof manner on the vehicle body-in-white.

In a preferred embodiment of the invention, the bracket is arranged on an axle construction of a vehicle, the bracket with the joined threaded nut being welded to an axle support, and preferably forming an accommodation facility for struts with the bodyshell, in particular for stabilizing the chassis.

In a preferred embodiment of the invention, the console has a locking washer for securing a shaft nut on a shaft thread.

The locking washer preferably has a first form-locking element which is operatively connected to a complementary element on the shaft thread and locks the locking washer in a rotationally secure manner on the shaft area and / or the locking washer has a second form-locking element which is operatively connected to a complementary element on the shaft nut and the shaft nut locked against rotation to the shaft thread.

A vehicle is understood to mean, in particular, a passenger car, a motorcycle, a truck, a bus, an RV, a construction vehicle, a utility vehicle, a ship and / or an aircraft.

The console for fastening a chassis component to a vehicle bodyshell or to a strut as a connection solution to the vehicle bodyshell and the method for producing a bracket for fastening a chassis component to a vehicle bodyshell have advantages compared to the prior art. A simple and precise fastening of a chassis component, in particular in connection with struts and / or links, to a vehicle body shell, in particular a wheel carrier, can advantageously be realized. The chassis component is advantageously fastened to the vehicle body shell in such a way that it is secured against automatic loosening. Advantageously, a chassis component created in this way, in particular an axle component, with a fixed threaded nut, due to the special shape, allows a high tightening torque, is extremely precise in position, can be joined reliably and has no material change behavior due to the influence of heat. Depending on the requirement, the selection remains variable according to certain strength classes of the threaded nut to be used. Advantageously, only one manufacturing technology, namely that of sheet metal forming and / or sheet metal perforation, is used to produce a robust nut fixation, which only requires a specialist in the technological field in the technological implementation process for the manufacturer's award. Thus, the circle of manufacturers for the component increases from its selection and can have a price-reducing effect on the overall component. Due to the forming process, the threaded nut to be joined does not experience a critical temperature change, so that a plastic-based self-locking threaded nut can be used. Influences due to the described joining process for a subsequent coating operation of the component construction are not to be feared, contrary to other manufacturing processes.

In a preferred embodiment of the invention, at least one side element is a plate, a fastening tab or a fastening bracket.

According to a development of the invention, it is provided that the base plate of the console has a punched-out base with a deep-drawn cup, the threaded nut being fitted into the cup, and the cup preferably being formed on one side of the base plate in the direction of the side elements and / or the collar of the threaded nut is preferably arranged on one side of the base plate in the direction of the side elements.

According to a development of the invention, it is provided that bending tabs for capturing the threaded nut are captively and non-rotatably inserted into an inside of the cup.

According to a development of the invention, it is provided that the base plate and the at least two side elements of the console are a sheet metal component, are preferably formed in one piece, and / or the at least two side elements are designed as holding brackets.

According to a development of the invention, it is provided that the bracket is designed for fastening an axle component to an axle structure, in particular an axle support, of the vehicle body shell or a strut for the vehicle body shell, or for fastening an underrun protection to the vehicle body shell.

The object of the present invention is also achieved by providing a vehicle bodyshell or a chassis component with at least one console according to the invention, in particular according to one of the exemplary embodiments described above. This results in particular for the vehicle body shell or the chassis component with the console, which have already been explained in connection with the console for fastening a chassis component to a vehicle body shell or on a strut for the vehicle body shell.

In a preferred embodiment of the invention, at least two side elements of the bracket or another geometrical shape of the bracket are welded to the vehicle body shell or a strut for the vehicle body shell or the chassis component.

According to a development of the invention, it is provided that an NVH component, a protective floor and / or a high-voltage (HV) protection device, in particular for a high-voltage cable and / or a high-voltage battery, are attached to the vehicle body shell or the chassis component by means of a shaft thread.

According to a development of the invention, it is provided that at least one bearing block in the chassis component for fastening at least one torsion bar, a guide and / or a supporting link, and / or an NVH vibration damper can be screwed accessible from a screwing side.

In a preferred embodiment of the invention, at least one bracket for fastening torsion bars or guide and support links is screwed at narrow points by means of at least one bracket.

In a preferred embodiment of the invention, an NVH vibration damper is fastened in the chassis area of the vehicle or integrated directly in the chassis component, preferably a side part of an axle, by means of at least one console.

1. a) Bereitstellen eines Blechbauteils,
2. b) Umformen und Austanzen des Blechbauteils mittels eines Blechumformprozesses, wobei eine Grundplatte mit mindestens zwei Seitenelementen und einer Aufnahmeöffnung erhalten wird, und
3. c) Einpressen und Fügen einer Gewindemutter mit einem Innengewinde und einen Bund in die Aufnahmeöffnung, so dass die Gewindemutter formschlüssig umschlossen wird und verliersicher und verdrehsicher in die Grundplatte eingefügt wird, wobei die Konsole erhalten wird.

The object of the present invention is also achieved in that a method for producing a bracket for fastening a chassis component to a vehicle bodyshell or a strut for the bodyshell is provided, in particular according to one of the exemplary embodiments described above. This results in particular for the method, the advantages which have already been explained in connection with the bracket for fastening a chassis component to a vehicle bodyshell or on a strut for the vehicle bodyshell, and the vehicle bodyshell or the chassis component with at least one such bracket. The process includes the following steps:

1. a) providing a sheet metal component,
2. b) forming and punching out the sheet metal component by means of a sheet metal forming process, a base plate having at least two side elements and a receiving opening being obtained, and
3. c) Pressing and joining a threaded nut with an internal thread and a collar into the receiving opening, so that the threaded nut is positively enclosed and inserted captively and securely against rotation in the base plate, the console being obtained.

According to a development of the invention, it is provided that in step b) a cup is formed with a cup base by means of the drawing operation using the sheet metal forming process, the cup being designed to receive the threaded nut, and / or in step b1) that obtained in step b) Cup bottom is machined by punching holes in such a way that bending tabs are formed in a further forming process and a subsequent joining of the threaded nut.

• 1 eine schematische Darstellung eines Ausführungsbeispiels einer Konsole zum Befestigen eines Fahrwerkbauteils an einem Fahrzeugrohbau in einer Draufsicht von oben und unten und in einer Seitenansicht;
• 2 eine schematische Darstellung eines Ausführungsbeispiels eines Fahrwerkbauteils mit mindestens einer Konsole zum Befestigen des Fahrwerkbauteils an einem Fahrzeugrohbau in einer Draufsicht (2A) und in einer Seitenansicht (2B);
• 3 eine schematische Darstellung eines Ausführungsbeispiels eines Fahrwerkbauteils, welches mittels einer Konsole an einem Fahrzeugrohbau befestigt ist, in einer Seitenansicht; und
• 4 eine schematische Darstellung eines Ausführungsbeispiels eines Verfahrens zur Herstellung einer Konsole zum Befestigen eines Fahrwerkbauteils an einem Fahrzeugrohbau in einem Fließdiagramm.
• 1 zeigt eine schematische Darstellung eines Ausführungsbeispiels einer Konsole Befestigen eines Fahrwerkbauteils 3 an einem Fahrzeugrohbau 5 oder an einer Strebe zum Fahrzeugrohbau 5 in einer Draufsicht von oben und unten und in einer Seitenansicht.

The invention is explained in more detail below with reference to the drawings. Show

• 1 a schematic representation of an embodiment of a bracket for attaching a chassis component to a vehicle body in a top view from above and below and in a side view;
• 2nd 1 shows a schematic illustration of an exemplary embodiment of a chassis component with at least one bracket for fastening the chassis component to a vehicle body shell in a plan view ( 2A) and in a side view ( 2 B) ;
• 3rd a schematic representation of an embodiment of a chassis component which is fastened to a vehicle body shell by means of a console, in a side view; and
• 4th is a schematic representation of an embodiment of a method for manufacturing a bracket for attaching a chassis component to a vehicle body in a flowchart.
• 1 shows a schematic representation of an embodiment of a console Attach a chassis component 3rd on a vehicle bodyshell 5 or on a strut for vehicle body-in-white 5 in a top view from above and below and in a side view.

The console 1 for fastening, in particular for fixing, a chassis component 3rd on a vehicle bodyshell 5 or on a strut for vehicle body-in-white 5 is designed to accommodate a shaft thread. The console 1 has a base plate 7 with at least two side elements 9 on, with the base plate 7 a threaded nut 11 with an internal thread and a collar 13 has, the threaded nut 11 captive and secure against rotation in the base plate 7 is inserted, and wherein at least two of the side elements 9 to the chassis component 3rd or to the vehicle bodyshell 5 are integrated or weldable, so that the chassis component 3rd on the vehicle bodyshell 5 captive, secure against twisting, in particular fixable.

This enables simple and precise attachment of a chassis component 3rd on a vehicle bodyshell 5 realize. The chassis component 3rd is so on the vehicle body shell 5 attached that it is secured against automatic loosening. The chassis component advantageously leaves one 3rd , in particular an axle component, with a fixed threaded nut 11 due to the special shape, a high tightening torque is extremely precise and can be joined reliably. Depending on the requirement, the selection remains according to certain strength classes, the threaded nut to be used 11 variable.

In 1a is the console 1 in a top view from below, one of the federal government 13 the threaded nut 11 and the side elements 9 opposite side of the base plate 7 the console 1 , shown. In 1b is the console 1 in a top view from above, one of the federal government 13 the threaded nut 11 and the side elements 9 facing side of the base plate 7 the console 1 , shown. In 1c the console is shown in a side view. In 1c the fastening direction L is marked with the shaft thread.

In one embodiment of the invention, the base plate 7 the console 1 a punched-out bottom with a deep-drawn bowl 15 on, with the threaded nut 11 in the bowl 15 is joined, and the bowl 15 preferably on one side of the base plate 7 towards the side elements 9 is trained and / or the federal government 13 the threaded nut 11 preferably on one side of the base plate 7 towards the side elements 9 is arranged.

In a further embodiment of the invention, bending tabs are 19th for caulking the threaded nut 11 captive and twist-proof in an inside of the bowl 15 added.

In a further embodiment of the invention, the base plate 7 and the at least two side elements 9 the console 1 a sheet metal component, preferably formed in one piece, and / or the at least two side elements 9 designed as a bracket.

In a further embodiment of the invention, the bracket is used to fasten an axle component to an axle structure, in particular an axle bracket, of the vehicle body shell 5 or a strut for vehicle body-in-white 5 , or for attaching an underride guard to the vehicle body shell 5 educated.

2nd shows a schematic representation of an embodiment of a chassis component 3rd with at least one console 1 for attaching the chassis component 3rd on a vehicle bodyshell 5 in a top view ( 2A) and in a side view ( 2 B) . The same and functionally identical elements are provided with the same reference numerals, so that reference is made to the preceding description.

On the chassis component 3rd is a console according to the invention 1 attached. The console 1 is in particular by means of two side elements 9 on their base plate 7 opposite end on the chassis component 3rd attached, preferably welded. The Bund 13 the threaded nut 11 is between the base plate 7 and the chassis component 3rd positioned while the threaded nut 11 from the other side of the base plate 7 is freely accessible.

In one embodiment of the invention there are at least two side elements 9 the console 1 to the vehicle bodyshell 5 or the chassis component 3rd welded.

In a further embodiment of the invention, an NVH component, an under protection floor and / or an HV protection device are provided on the vehicle body shell by means of a shaft thread 5 or the chassis component 3rd attached.

In a further embodiment of the invention, at least one bearing block is in the chassis component 3rd For fastening at least one torsion bar, a guide and / or a supporting link, and / or an NVH vibration damper, can be screwed accessible from a screwing side.

3rd shows a schematic representation of an embodiment of a chassis component 3rd using a console 1 on a vehicle bodyshell 5 is attached, in a side view. Same and functionally identical elements are provided with the same reference numerals, so that reference is made to the preceding description.

The console according to the invention 1 is between the chassis component 3rd and the bodyshell 5 arranged. The console 1 is in particular by means of two side elements 9 on their base plate 7 opposite end on the chassis component 3rd attached, and by means of a shaft thread, in particular a screw, in the threaded nut 11 intervenes on the vehicle bodyshell 5 attached. The vehicle bodyshell 5 for this purpose preferably has an opening through which the shaft thread is passed. The Bund 13 the threaded nut 11 is between the base plate 7 and the chassis component 3rd positioned.

4th shows a schematic representation of an embodiment of a method for producing a console 1 for attaching a chassis component 3rd on a vehicle bodyshell 5 in a flow chart. The same and functionally identical elements are provided with the same reference numerals, so that reference is made to the preceding description.

In the process for producing a console according to the invention 1 for attaching a chassis component 3rd or a strut for vehicle body-in-white 5 on a vehicle bodyshell 5 a sheet metal component is provided in step a), the sheet metal component is formed and punched out in a step b) by means of a sheet metal forming process, a base plate ( 7 ) with at least two side elements 9 and a receiving opening is obtained, and in a step c) a threaded nut 11 with an internal thread and a collar 13 pressed into the receiving opening and joined so that the threaded nut 11 is positively enclosed and captive and secure against rotation in the base plate 7 is inserted, the console 1 is obtained.

In one embodiment of the method, a bowl is formed in step b) by means of a drawing operation using the sheet metal forming process 15 with a bowl bottom 17th shaped, the bowl 15 to accommodate the threaded nut 11 is formed, and / or in step b1) the cup bottom obtained in step b) 17th processed by punching holes in such a way that in a further forming process and a subsequent joining of the threaded nut 11 Bending tab 19th be formed.

As a result, only one production technology, namely that of sheet metal forming and / or sheet metal perforation, is used to produce a robust nut fixation. The threaded nut to be joined is subjected to the forming process 11 no critical temperature change, so a plastic-based self-locking threaded nut 11 can be used.

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 102004030965 A1 [0004]
• DE 102011112056 A1 [0005]

Claims (10)

Console (1) for fastening, in particular for fixing, a chassis component (3) to a vehicle body-in-white (5) or on a strut for vehicle body-in-white (5), the console (1) being designed to receive a shaft thread, characterized in that the Console (1) has a base plate (7) with at least two side elements (9), the base plate (7) having a threaded nut (11) with an internal thread and a collar (13), the threaded nut (11) being captive and secure against rotation the base plate (7) is inserted, and wherein at least two of the side elements (9) are integrated or weldable on the chassis component (3) or on the vehicle body shell (5), so that the chassis component (3) on the vehicle body shell (5) is captive and can be secured against rotation, in particular can be fixed. Console (1) after Claim 1 , characterized in that the base plate (7) of the bracket (1) has a punched-out base with a deep-drawn cup (15), the threaded nut (11) being fitted into the cup (15), and the cup (15) is preferred is formed on one side of the base plate (7) in the direction of the side elements (9) and / or the collar (13) of the threaded nut (11) is preferably arranged on one side of the base plate (7) in the direction of the side elements (9). Console (1) after Claim 1 or 2nd , characterized in that bending tabs (19) for caulking the threaded nut (11) are secured against loss and rotation in an inside of the cup (15). Console (1) according to one of the preceding claims, characterized in that the base plate (7) and the at least two side elements (9) of the console (1) are a sheet metal component, are preferably formed in one piece, and / or the at least two side elements (9 ) are designed as brackets. Console (1) according to one of the preceding claims, characterized in that the console for attaching an axle component to an axle construction, in particular an axle support, of the vehicle bodyshell (5) or a strut for the vehicle bodyshell (5), or for attaching an underrun protection to the vehicle bodyshell (5) is formed. Vehicle bodyshell (5) or chassis component (3) with at least one console (1) according to one of the Claims 1 to 5 , wherein preferably at least two side elements (9) of the bracket (1) are welded to the vehicle body shell (5) or a strut to the vehicle body shell (5) or the chassis component (3). Vehicle bodyshell (5) or chassis component (3) according to Claim 6 , An NVH component, a protective floor and / or an HV protection device being attached to the vehicle body shell (5) or the chassis component (3) by means of a shaft thread. Vehicle bodyshell (5) or chassis component (3) according to Claim 6 or 7 , characterized in that at least one bearing block in the chassis component (3) for fastening at least one torsion bar, a guide and / or a supporting link, and / or an NVH vibration damper can be screwed accessible from a screwing side. Method for producing a bracket (1) for fastening a chassis component (3) to a vehicle body shell (5) or a strut for the vehicle body shell (5) according to one of the Claims 1 to 5 The method comprises the following steps: a) providing a sheet metal component, b) forming and punching out the sheet metal component by means of a sheet metal forming process, a base plate (7) having at least two side elements (9) and a receiving opening being obtained, and c) pressing in and Joining a threaded nut (11) with an internal thread and a collar (13) into the receiving opening, so that the threaded nut (11) is positively enclosed and inserted captively and securely against rotation in the base plate (7), the console (1) being obtained . Process for the manufacture of a console (1) Claim 9 , wherein in step b) a cup (15) is formed with a cup base (17) by means of a drawing operation using the sheet metal forming process, the cup (15) being designed to receive the threaded nut (11), and / or in a step b1) Cup bottom (17) obtained in step b) is processed by punching holes in such a way that bending tabs (19) are formed in a further forming process and a subsequent joining of the threaded nut (11).

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