Fastening system

The integration of a detection device in the fastening system ensures easy and reliable verification of the installation end position, addressing the challenge of visually inspecting hard-to-reach connections by providing optical or acoustic feedback.

DE102022115527B4Active Publication Date: 2025-07-31DR ING H C F PORSCHE AG
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Patent Information

Application Number
DE102022115527
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Filing Date
2022-06-22
Publication Date
2025-07-31
Estimated Expiration
2042-06-22

AI Technical Summary

Technical Problem

Existing fastening systems struggle to facilitate easy and reliable verification of a predefined installation end position between components, especially in motor vehicle construction, due to the difficulty in visually inspecting or accessing the connection at hard-to-reach locations.

Method used

A detection device is integrated into the fastening system, which optically, electrically, or acoustically signals the achievement of a predefined installation end position by using a tolerance compensation element that adjusts against a first component, ensuring the correct final position is reached without direct visual inspection.

Benefits of technology

The detection device allows for simple and reliable verification of the correct installation end position, preventing partial unscrewing and ensuring high-quality screw connections by providing visual or auditory feedback.

✦ Generated by Eureka AI based on patent content.

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Abstract

Fastening system (1) for the precise spacing of a first component (2) to a second component (3) by means of a bolt (4), characterized in that the bolt (4) can be screwed into a first internal thread (6) of a nut (7) via a first external thread (5), the nut (7) being arranged on a side of the second component (3) facing away from the first component (2), a tolerance compensation element (8) having a second external thread (9) and a second internal thread (10) being provided, which is arranged on a side of the second component (3) facing the first component (2) and is screwed to a third internal thread (11) on the second component (3) via its second external thread (9), the bolt (4) having a third external thread (12) cooperating with the second internal thread (10) of the tolerance compensation element (8), the threads (5, 6, 9, 10, 11, 12) cooperate in such a waythat when the bolt (4) is screwed into the second internal thread (10) of the tolerance compensation element (8) and the first internal thread (5) of the nut (7), the tolerance compensation element (8) is adjusted in the direction of the first component (2), - wherein a detection device (14) is provided which detects the adjustment of the tolerance compensation element (8) in the direction of the first component (2) and / or the reaching of an installation end position of the tolerance compensation element (8) in which it rests against the first component (2), and wherein the checking of the installation end position can be carried out by means of the detection device without direct visual inspection of the tolerance compensation element (8) which keeps the two components (2, 3) at a distance.
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Claims

[1] Fastening system (1) for fastening a first component (2) to a second component (3) with a precise spacing by means of a bolt (4), characterized by , - that the bolt (4) can be screwed into a first internal thread (6) of a nut (7) via a first external thread (5), wherein the nut (7) is arranged on a side of the second component (3) facing away from the first component (2), - wherein a tolerance compensation element (8) with a second external thread (9) and a second internal thread (10) is provided, which is arranged on a side of the second component (3) facing the first component (2) and is screwed to a third internal thread (11) on the second component (3) via its second external thread (9), - wherein the bolt (4) has a third external thread (12) cooperating with the second internal thread (10) of the tolerance compensation element (8), - wherein the threads (5, 6, 9, 10, 11, 12) interact in such a way that when the bolt (4) is screwed into the second internal thread (10) of the tolerance compensation element (8) and the first internal thread (5) of the nut (7), the tolerance compensation element (8) is adjusted in the direction of the first component (2), - wherein a detection device (14) is provided which detects the adjustment of the tolerance compensation element (8) in the direction of the first component (2) and / or the reaching of an installation end position of the tolerance compensation element (8) in which it rests against the first component (2), and wherein the checking of the installation end position can be carried out by means of the detection device without direct visual inspection of the tolerance compensation element (8) which keeps the two components (2, 3) at a distance. [2] Fastening system according to claim 1, characterized bythat the detection device (14) has a flag (15) arranged parallel to the bolt (4) and adjustable by the tolerance compensation element (8). [3] Fastening system according to claim 1 or 2, characterized by that the detection device (14) has a sleeve (17) which at least partially surrounds the bolt (4) and is adjustable by the tolerance compensation element (8). [4] Fastening system according to one of the preceding claims, characterized by that the detection device (14) has an electrical contact (18) which is closed as soon as the tolerance compensation element (8) rests against the first component (2) and its predefined installation end position is reached. [5] Fastening system according to one of the preceding claims, characterized by that the detection device (14) has a pressure sensor which is actuated as soon as the tolerance compensation element (8) rests against the first component (2) and its predefined installation end position is reached. [6] Method for detecting a predefined installation end position of a tolerance compensation element (8) of a fastening system (1) according to one of the preceding claims, in which - the bolt (4) for fastening the first component (2) to the second component (3) is screwed via its first external thread (5) into the first internal thread (6) of the nut (7) and via its third external thread (12) into the second internal thread (10) of the tolerance compensation element (8), so that an adjustment of the tolerance compensation element (8) in the direction of the first component (2) takes place, - the detection device (14) detects the adjustment of the tolerance compensation element (8) in the direction of the first component (2) and indicates the reaching of the predefined installation end position of the tolerance compensation element (8). [7] Method according to claim 6, characterized bythat a flag (15) arranged parallel to the bolt (4) and adjustable by the tolerance compensation element (8) is used as the detection device (14), which flag indicates that the predefined installation end position of the tolerance compensation element (8) has been reached. [8] Method according to claim 6 or 7, characterized by that a sleeve (17) which at least partially surrounds the bolt (4) and is adjustable by the tolerance compensation element (8) is used as the detection device (14), which indicates that the predefined installation end position of the tolerance compensation element (8) has been reached. [9] Method according to one of claims 6 to 8, characterized by that an electrical contact (18) is used as the detection device (14), which is closed as soon as the tolerance compensation element (8) rests against the first component (2) and the predefined installation end position of the tolerance compensation element (8) is reached. [10] Method according to one of claims 6 to 9, characterized bythat a pressure sensor (20) is used as the detection device (14), which is actuated as soon as the tolerance compensation element (8) rests against the first component (2) and the predefined installation end position of the tolerance compensation element (8) is reached.

Citation Information

Patent Citations

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