DE3410298C1

DE3410298C1 - Device for the detachable connection of two components which are provided with aligning openings

Info

Publication number: DE3410298C1
Application number: DE19843410298
Authority: DE
Inventors: Horst 7261 Ostelsheim Dahm; Fritz 7032 Sindelfingen Häberle; Reiner 7031 Aidlingen Jocher
Original assignee: Daimler Benz AG
Current assignee: Daimler Benz AG
Priority date: 1984-03-21
Filing date: 1984-03-21
Publication date: 1985-11-14

Abstract

The invention is based on a device for the detachable connection of two components which are provided with aligning openings, which device comprises a bolt having a head which is supported on the first component and having recesses which extend over circular sections of a circumferential plane of the bolt shank, and a retaining device which is fixed on the second component and has rows of latching tabs which run parallel to the axis of the bolt shank, and which latching tabs face the bolt shank from the retaining device and engage in a locking manner in the lateral recesses of the bolt shank in the closed position, which can be achieved by rotating the bolt. According to the invention, the latching tabs are formed by teeth of rows of teeth which are curved concentrically with respect to the bolt, into which toothed rods, which are curved in the same direction, are provided on the circumference of the bolt and extend essentially over the entire length of the bolt shank, engage such that the toothed rods and rows of teeth are correspondingly superimposed, and there is provided in the first component an eccentric through-opening which, in an insertion position of the bolt, allows the passage of a retaining bracket which is matched to the unobstructed cross-section of the through-opening and, in the closed position, engages behind the first component.

Description

Aus F i g. ist der Aufbau und die Zuordnung der Bestandteile der Vorrichtung in der Schließstellung erkennbar. Es handelt sich bei den Bestandteilen um einen Bolzen 1, einen Bereich eines Karosseriebleches 2, aus dem eine Durchstecköffnung 3 ausgespart ist, und um einen Befestigungsbereich eines Scheinwerfergehäuses 4. Der Bolzen 1 ist ein einstückiges Kunststoffspritzgußteil und umfaßt einen Kopf 5, von dessen Umfang ein umlaufender Kragen 6 abragt, eine aufgegliederte Schlüsselaufnahme 7, zwei Aussparungen 8, einen mit Abstand zum Kopf 5 diametral zu diesem verlaufenden Haltebügel 9, einen zentral angeformten, nach unten auskragenden Bolzenschaft 10, von dem beidseitig Zahnstangen 11, deren Zähne konzentrisch zum Bolzenschaft 10 gewölbt sind, abragen, zwei achsparallel und konzentrisch zu den Zahnstangen 11 verlaufende Kreisringsegmente 12, die mit einer Außenverzahnung 13 versehen sind, und einen achsparallel in der radialen Flucht der Kreisringsegmente 12 liegenden Führungssteg 14. From Fig. is the structure and assignment of the components of the Device recognizable in the closed position. It concerns the components around a bolt 1, an area of a body panel 2 from which a push-through opening 3 is cut out, and around a fastening area of a headlight housing 4. The bolt 1 is a one-piece plastic injection-molded part and comprises a head 5, from the circumference of which a circumferential collar 6 protrudes, a broken down key holder 7, two recesses 8, one with Distance to the head 5 diametrically too this extending bracket 9, a centrally formed, downward protruding Bolt shank 10, of which racks 11 on both sides, the teeth of which are concentric to the Bolt shank 10 are curved, protrude, two axially parallel and concentric to the Toothed racks 11 extending circular ring segments 12, which with an external toothing 13 are provided, and one axially parallel in the radial alignment of the annulus segments 12 horizontal guide bar 14.

Die Durchstecköffnung 3 im Karosserieblech 2 besteht aus einem Langloch, das im Mittelbereich zu einer Bohrung erweitert ist. Sie ist gegenüber dem Durchsteckquerschnitt des Bolzens 1 überdimensioniert, wie an späterer Stelle noch erläutert werden wird. The push-through opening 3 in the body panel 2 consists of an elongated hole, which is widened to a hole in the middle area. It is opposite the push-through cross-section of the bolt 1 is oversized, as will be explained later.

Die Haltevorrichtung ist einstückig an das Scheinwerfergehäuse 4 angeformt. Sie wird von einem Hülsenkörper 15, der einen etwa halbkreisförmigen Querschnitt aufweist, und von einer auf Abstand gesetzten Außenhülse 16 gleicher Grundform, die den Hülsenkörper 15 konzentrisch umgibt, gebildet. Zwischen den Innenumfang der Außenhülse 16 und dem Außenumfang des Hülsenkörpers 15 befindet sich somit ein Führungskanal 17, in den von der Außenhülse 16 zwei Zahnreihensegmente 18, und vom Hülsenkörper 15 zwei Anpreßstege 19 und 20 und ein Anschlagsteg 21 hineinragen. Am Innenumfang des Hülsenkörpers 15 sind zwei Zahnreihen 22 angeordnet, die einander - den Zahnreihensegmenten 18 entsprechend - gegenüberliegen. Im Verschlußzustand der Vorrichtung ergibt sich somit ein Zusammenwirken der Zahnreihensegmente 18 mit den Außenverzahnungen 13 der Kreisringsegmente 12 und der Zahnreihen 22 mit den Zahnstangen 11. Hierdurch ist es zwingend notwendig, daß die Zahnform bzw. die Zahnteilung der korrespondierenden Verzahnungen aufeinander abgestimmt sind. The holding device is in one piece on the headlight housing 4 molded. It is of a sleeve body 15, which is an approximately semicircular Has cross section, and of a spaced outer sleeve 16 the same Basic shape that surrounds the sleeve body 15 concentrically formed. Between the inner circumference the outer sleeve 16 and the outer circumference of the sleeve body 15 is thus a Guide channel 17, in which from the outer sleeve 16 two tooth row segments 18, and from Sleeve body 15, two pressing webs 19 and 20 and a stop web 21 protrude. On the inner circumference of the sleeve body 15, two rows of teeth 22 are arranged, which one another - Corresponding to the tooth row segments 18 - are opposite. In the locked state the device thus results in an interaction of the tooth row segments 18 with the external teeth 13 of the circular ring segments 12 and the rows of teeth 22 with the Toothed racks 11. This makes it imperative that the tooth shape or the tooth pitch the corresponding gears are matched to one another.

Zum vorliegenden Anwendungsfall ist noch anzumerken, daß die Haltevorrichtung einen vierten Befestigungspunkt für das Scheinwerfergehäuse 4 bietet, das bereits in drei Punkten karosserieseitig befestigt ist. Da die Einbaulage des Schweinwerfergehäuses 4 somit in Abhängigkeit von den Fertigungstoleranzen der Rohkarosserie variiert, andererseits die Öffnung der Haltevorrichtung und die Durchstecköffnung 3 im Karosserieblech 2 fluchten müssen, damit der Bolzen 1 in die Haltevorrichtung einsteckbar ist, muß die Durchstecköffnung 3 um den Betrag der zulässig auftretenden Toleranzen überdimensioniert sein. For the present application it should also be noted that the holding device a fourth attachment point for the headlight housing 4 offers that already is attached in three points on the body side. Since the installation position of the headlight housing 4 thus varies depending on the manufacturing tolerances of the body-in-white, on the other hand, the opening of the holding device and the push-through opening 3 in the body panel 2 must be aligned so that the bolt 1 can be inserted into the holding device the through opening 3 is overdimensioned by the amount of the permissible tolerances that occur be.

F i g. 2, die den Bolzen 1 in einer äußeren Extremlage zeigt, macht diese Zusammenhänge deutlich. Der zu verwendende Durchmesser für den Kopf 5 ergibt sich, nachdem das Übermaß der Durchstecköffnung 3 festgelegt ist, ebenso wie die radiale Erstreckung und die Breite des Haltebügels 9 aus den jeweils aufzubringenden Haltekräften. Zur Festlegung des Bolzens 1 am Karosserieblech 2 wird der Bolzen 1 derart in die Durchstecköffnung 3 eingeführt, daß die Mittellängsachse des Haltebügels 9 parallel zur Mittellängsachse der Durchstecköffnung 3 verläuft. Durch Druck auf den Kopf 5 des Bolzens 1, der beim Ansetzen eines Schraubenschlüssels in der Schlüsselaufnahme 7 erzeugt wird, wölbt sich der Boden des Kopfes 1, der sich über den Kragen 6 am Karosserieblech 2 abstützt, nach innen. F i g. 2, which shows the bolt 1 in an outer extreme position these connections clearly. The diameter to be used for the head 5 results after the excess of the through opening 3 is determined, as well as the radial extension and the width of the retaining bracket 9 from the respective to be applied Holding forces. To fix the bolt 1 on the body panel 2, the bolt 1 inserted into the through opening 3 in such a way that the central longitudinal axis of the retaining bracket 9 runs parallel to the central longitudinal axis of the through opening 3. By pressing on the head 5 of the bolt 1, which when a wrench is placed in the key holder 7 is generated, arches the bottom of the head 1, which extends over the collar 6 on Body panel 2 supports, inward.

Aus dieser Position wird der Bolzen 1 um etwa 90 Grad gedreht, so daß das Karosserieblech 2 auf einer Seite vom Kopf 5 und auf der anderen Seite vom Haltebügel 9 umgriffen wird. Zur Drehsicherung des Bolzens 1 in der Durchstecköffnung 3 kann eine der dem Karosserie- blech 2 zugewandten Flächen rutschhemmend ausgebildet sein, z. B. durch eine Pfeilverzahnung 23 des Haltebügels 9.From this position, the bolt 1 is rotated by about 90 degrees, see above that the body panel 2 on one side of the head 5 and on the other side of the Retaining bracket 9 is gripped. To prevent the bolt 1 from rotating in the push-through opening 3 can be one of the Sheet 2 facing surfaces designed to be slip-resistant be e.g. B. by a herringbone toothing 23 of the retaining bracket 9.

Mit der durch die Drehbewegung des Bolzens 1 erzielten Fixierung desselben am Karosserieblech 2 geht auch die Befestigung des Bolzens 1 an der Haltevorrichtung einher. Je nach Einbaulage des Scheinwerfergehäuses 4 treten der Bolzenschaft 10, die Kreisringsegmente 12 und der Führungssteg 14 unterschiedlich tief in die Haltevorrichtung ein. In der Einsteckstellung, die bei der Anordnung der Durchstecköffnung 3 berücksichtigt werden muß, tritt die rechte Zahnstange 11 in eine Hohlkehle 24 am Innenumfang des Hülsenkörpers 15 und das rechte Kreisringsegment 12 zwischen dem linken Zahnreihensegment 18 und dem rechten Zahnreihensegment 18 in den Führungskanal 17 ein. Der Führungssteg 14 liegt somit im Bereich des linken Zahnreihensegments 18 im Führungskanal 17. Die Drehung des Bolzens 1 im Uhrzeigersinn führt zu einer aus F i g. 3 ersichtlichen Schließstellung der Vorrichtung. Der Drehweg wird hierbei durch Ablaufen des Führungssteges 14 auf den Anschlagsteg 21 begrenzt. Zur Sicherung des formschlüssigen Eingriffs der Außenverzahnungen 13 in die Zahnreihensegmente 18 stützen sich auf dem Innenumfang der Kreisringsegmente 12 zwei zugeordnete Anpreßstege 19 und 20 ab. Damit die Außenhülse 16 sich dieser Anpreßkraft nicht durch Verformung entzieht, ist sie durch keilförmige Versteifungsrippen 25 mit dem Scheinwerfergehäuse 4 verbunden. With the fixation achieved by the rotational movement of the bolt 1 the same on the body panel 2 is also the fastening of the bolt 1 to the holding device hand in hand. Depending on the installation position of the headlight housing 4, the bolt shank 10, the circular ring segments 12 and the guide web 14 at different depths in the holding device a. In the inserted position, which is taken into account when arranging the push-through opening 3 must be, the right rack 11 occurs in a groove 24 on the inner circumference of the Sleeve body 15 and the right circular ring segment 12 between the left tooth row segment 18 and the right tooth row segment 18 into the guide channel 17. The guide bar 14 is thus in the area of the left tooth row segment 18 in the guide channel 17. The clockwise rotation of the bolt 1 results in one of FIG. 3 can be seen Closed position of the device. The turning path is here by running off the guide bar 14 limited to the stop web 21. To secure the positive engagement of the external teeth 13 in the tooth row segments 18 are based on the inner circumference of the circular ring segments 12 from two associated pressing webs 19 and 20. So that the outer sleeve 16 this contact pressure is not withdrawn by deformation, it is wedge-shaped Reinforcing ribs 25 are connected to the headlight housing 4.

Da der Bolzen 1, durch Rückverformung des Kopfes 5 nach dem Absetzen des Schlüssels axial ausfedert, ergibt sich eine spielfreie Verbindung zwischen dem Karosserieblech 2 und dem Scheinwerfergehäuse 4. As the bolt 1, by deformation of the head 5 after it has been set down of the key rebounds axially, there is a backlash-free connection between the body panel 2 and the headlight housing 4.

Die Aussparungen 8 im Kopf 5 sind für die Funktion des Bolzens 1 von untergeordneter Bedeutung. Sie wirken sich jedoeh im fertigungstechnischen Ablauf dahingehend vorteilhaft aus, daß sie den Spritzguß des Bolzens 1 in einer einfach geteilten Form ermöglichen. The recesses 8 in the head 5 are for the function of the bolt 1 of minor importance. However, they have an effect on the production process advantageous in that it allows the injection molding of the bolt 1 in a simple manner enable split form.

Zum Lösen des Bolzens 1 wird dieser im Uhrzeigergegensinn gedreht, bis eine Ausnehmung des Führungssteges 14 an eine Nase des Anpreßstegs 20 anliegt. Somit befindet sich der Bolzen 1 wieder in seiner Einsteckstellung und kann problemlos herausgezogen werden. To loosen bolt 1, turn it counterclockwise, until a recess of the guide web 14 rests against a nose of the pressing web 20. Thus, the bolt 1 is again in its inserted position and can easily be pulled out.

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Claims

Claims: 1. Device for releasably connecting two with aligned openings provided with components that have a bolt attached to the first Component supporting head, extending over sections of a circumferential plane of the bolt shank and racks extending substantially its entire length as well a holding device attached to the second component, the holding device the bolt shank facing locking lugs, which in a by rotation of the bolt achievable closed position of the insertion depth of the racks in the holding device correspondingly interlockingly engage in the racks, and wherein in the first component a push-through opening is provided into which the bolt can be inserted and that engages behind the first component in a closed position by means of a holding element, This is approximately at the distance of the material thickness of the first component between the head and the bolt shank is arranged, d u r c h e k e n n -z e i c h n e t that the holding device is formed by a sleeve body (15) approximately semicircular cross-section, which is surrounded by a spaced outer sleeve (16) of the same basic shape, that from the head (5) of the bolt (1) axially parallel and concentric to the racks (11) of the bolt shank (10) extending circular ring segments (12) protrude, which in nested state of bolt (1) and holding device between the outer circumference of the sleeve body (15) and the inner circumference of the outer sleeve (16) are guided, wherein the racks (11) in turn are curved concentrically to the bolt (1) and the Measure of their overlap in the same direction arched, on the inner circumference of the Sleeve body (15) arranged rows of teeth (22) engage, and that the through-opening (3) in the first component in an inserted position of the bolt 1 the passage of the the clear cross-section of the push-through opening (3) as a retaining bracket (9) trained holding element permitted.

2. Apparatus according to claim 1, characterized in that the push-through opening (3) is designed as an elongated hole widened to a bore in the central area.

3. Apparatus according to claim 1 or 2, characterized in that between at least one circumferential surface of the circular ring segment (12) and one of these facing sleeve surface corresponding rows of teeth (13 and 18) are provided.

4. Device according to one or more of the preceding claims, characterized in that in the guide channel (17) between the sleeve body (15) and Outer sleeve (16) a stop web (21) is arranged, which with one of the retaining bracket (9) projecting guide web (14) cooperates.

5. Device according to one or more of the preceding claims, characterized in that the head (5) has a circumferential one facing the first component Has collar (6).

6. Device according to one or more of the preceding claims, characterized in that the holding device is molded onto the second component is.

The invention relates to a device for releasable connection of two components with aligned openings that connect a bolt to a head supported on the first component, extends over sections of a circumferential plane of the bolt shank and extending essentially over its entire length Gear racks and a holding device attached to the second component, wherein the holding device has locking lugs facing the bolt shank, which are in a by turning the bolt achievable closed position of the insertion depth of the racks Engage the racks in the holding device and lock them accordingly, and wherein a push-through opening is provided in the first component, into which the bolt can be inserted and the first component in a closed position by means of a holding element engages behind, which is approximately at the distance of the material thickness of the first component between Head and bolt shank is arranged.

Such a device is already known from GB-PS 13 52 985, wherein the bolt shank is held by means of elastic locking springs. Due to the The spring characteristic of the detent springs is the fastening intensity of this device In the case of vibrations, this is only guaranteed if both components are frictionally engaged lie on one another. Are the components to be connected stationary at a distance from one another to hold, this device is unsuitable.

Furthermore, from US-PS 2442 064 ago a fastening device of a similar type known that a more stable seat of the bolt shank in the holding device allowed. On the other hand, there is no functionally provided for set the components to be connected at a distance from one another.

The invention is therefore based on the object, the known, the To further develop the preamble of claim 1 corresponding device in such a way that that a second component while maintaining a distance from the first component on the first component, which has a substantially constant thickness, via a Distance area to be fastened in a stable and backlash-free manner under position-fixed assignment is.

The inventive solution to this problem is the subject of the characterizing Features of claim 1.

Advantageous refinements of the invention emerge from the patent claims 2 to 6 emerge.

The following is an embodiment of the device according to the invention for the detachable connection of two components provided with aligned openings based on a drawing explained in more detail.

In the drawing, F i g. 1 an exploded view of the individual parts of the device, FIG. 2 is a rear view of one located in the push-through opening Bolzens and F i g. 3 shows a section through the device in a closed position.