DE202010011474U1 - Lock cap for a buckle - Google Patents

Abstract

Lock cap for a buckle with two interconnected half shells (10, 20) and connecting units, which connect the two half shells (10, 20), characterized in that at least one connecting unit each have a hole (24, 24 ', 24' ', 24 '' ') in each half-shell (10, 20) and a ribbed connecting pin (40, 40', 40 '', 40 '' '), which in the two holes (24, 24', 24 '', 24 '' ') extends.

Description

The The invention relates to a lock cap for a buckle after Preamble of claim 1.

Nearly every buckle for the safety belt system of a motor vehicle has one of two Half shells existing lock cap on, in which the mechanics of the buckle is received and against the one shutter button is kept movable. The shutter button can exclusively held by the mechanism or partially by the lock cap be.

There are several ways known how the two half-shells of the lock cap can be connected to each other:
On the one hand, it is known to screw the two lock caps together, but this is usually a manual operation only, which takes a relatively long time. Furthermore, a final check to see whether all screws are tightened correctly, perform only with great effort.

Farther it is known, the two lock caps by welding, for example by ultrasonic welding, friction welding, to connect with each other, but what a relatively expensive welding apparatus requires.

Finally is It is also known, the two half-shells by means of snap connections to connect with each other, but has the disadvantage that the Lock caps themselves must be relatively complicated, including consuming and expensive injection molding tools are necessary.

Of these, Based on the present invention has the object, a Lock cap available which are fast, easy, safe and with little equipment Effort can be mounted and their items cost-effectively are.

These The object is achieved by a lock cap with the features of the claim 1 solved.

According to the invention the connection of the two half-shells with each other at least partially - preferably completely - by, that a connecting pin is pressed into a respective hole in each half-shell so that the two half shells over this pin, which is clamping held in each hole to be connected.

Advantageous this is because the half-shells themselves are geometrically very simple can be built which is advantageous in terms of tooling costs for the half-shells effect. The or preferably made of metal Connecting pins can very easy in an extrusion molding process can be made and identical connecting pins for a variety used by different lockcaps, giving their unit price low holds.

Finally is The assembly is very simple, it can be done by means of a very simple Pressing tool fast and accurate be carried out manually, semi-automatically or fully automatically. The pressing of the connecting pin is preferably under Deformation, in particular widening of the holes, which leads to very high holding forces. For this purpose points the connecting pin further preferably has a sawtooth-shaped profile.

to exact position definition of the connecting pin further instructs this Preferably, a separating section, so that its Einpresstiefe is precisely defined in each hole.

Around to reliably rule out incorrect assembly is the connecting pin preferably designed mirror-symmetric and rotationally symmetrical.

A Final inspection can be done very simply by just looking at it belt buckle installed: Are all connecting pins fully pressed in, the assembly is done correctly.

Further advantageous embodiments of the invention will become apparent from the further subclaims and from the embodiment now described in more detail with reference to the figures. Hereby show:

1 An exploded view of a buckle,

2 a connecting pin,

3 a part of a lock cap with two pressed connection pins and

4 a pressed-in a hole connecting pin in a side view.

The 1 shows an exploded view of a buckle. This has a mechanism which is flat with the reference numeral 30 is designated, a shutter button 35 , two half-shells 10 . 20 and connecting pins, four in this embodiment 40 . 40 ' . 40 '' and 40 ''' on. Every half shell 10 . 20 has a hole for each connecting pin, which is arranged in the embodiment shown in a neck of the respective half-shell. These approaches are integrally formed on the half-shells, the two Halbscha len preferably each one-piece injection molded parts made of plastic. Due to the selected perspective view is in the first half-shell 10 not an approach to see at the second half shell 20 are the approaches 22 ' . 22 '' and 22 ''' and their associated holes 24 ' . 24 '' and 24. ''' to see.

Based on 2 Now, first, the exact structure of a connecting pin 40 explained, with all the connecting pins 40 . 40 ' . 40 '' and 40 ''' are identical. The connecting pin 40 extends rotationally symmetrical about an axis of rotation R and is mirror-symmetrical to the mirror plane E. In this game level E is the separation section 46 , which is disc-shaped, and which the maximum diameter D _{V of} the connecting pin 40 having. On both sides of this separation section 46 lie first section 42 and second section 44 , which are executed ribbed. In the preferred embodiment shown, the ribs are such that, viewed in cross section, they have a sawtooth-shaped profile, namely with flat flanks 50 and the axis of rotation R substantially vertical flanks 52 , In this case, the flat edges of the mirror plane E away. The ends of the two sections 42 . 44 are each as rounded caps 48 educated. The two sections 42 . 44 each have a maximum diameter D _A.

The connecting pin 40 is an integral part of metal, preferably of a light metal such as aluminum and is produced by the extrusion process.

The 3 shows a portion of a first half-shell 10 , in which two connecting pins are completely pressed.

The 4 shows an enlarged view of one in a hole 24 pressed connection pin 40 in a side view, with the hole 24 is shown cut. You realize that the hole 24 (This also applies to all other holes) has a cylindrical shape with a constant hole diameter D _L in the initial state. This hole diameter D _L is smaller than the maximum diameter D _{A of} the two sections 42 . 44 , so that when pressing a section (here the second section 44 ) in the hole 24 this is deformed accordingly, whereby a high clamping force is achieved. A non-destructive disassembly is usually no longer possible. Due to the larger diameter D _{V of} the separation section 46 this is on the surface 22A of the approach 22 on and limits the injection depth of the section 44 ,

The assembly of the two half shells 10 . 20 Usually happens to each other in that first all the connection pins 40 . 40 ' . 40 '' . 40 ''' in one of the two half-shells 10 . 20 be pressed, and then the other half-shell is pressed onto the protruding connecting pins. Thus, two holes and a connecting pin each form a connecting unit. Both steps can be done with simple presses. To make such a mounting possible, it is necessary that all holes extend parallel to each other. Due to the mirror symmetry and the identical design of the connecting pins incorrect assembly is excluded.

10

first half shell

12 12 ', 12' ', 12' ''

approach

14 14 ', 14' ', 14' ''

hole

20

second half shell

22 22 ', 22' ', 22' ''

approach

22A

surface

24 24 ', 24' ', 24' ''

hole

30

mechanics

35

release button

40 40 ', 40' ', 40' ''

connecting pin

42

first section

44

second section

46

separating section

48

cap

50

area flank

52

vertical flank

D _V

maximum Diameter of the connecting pin

D _A

maximum Diameter of the sections

D _L

Hole diameter

e

mirror plane

R

axis of rotation

Claims (15)

Locking cap for a buckle with two interconnected half-shells ( 10 . 20 ) and connecting units, which the two half-shells ( 10 . 20 ), characterized in that at least one connection unit each have a hole ( 24 . 24 ' . 24 '' . 24. ''' ) in each half shell ( 10 . 20 ) and a ribbed connecting pin ( 40 . 40 ' . 40 '' . 40 ''' ), which extends into the two holes ( 24 . 24 ' . 24 '' . 24. ''' ). Lock cap according to claim 1, characterized in that the connecting pin has two sections ( 42 . 44 ), wherein a first section ( 42 ) in the hole of the first half shell and a second ( 44 ) Section in the hole ( 24 ) of the second half shell ( 20 ). Lock cap according to claim 2, characterized that the two sections each have a sawtooth profile. Lock cap according to claim 3, characterized in that the flat flanks ( 50 ) of one section in each case away from the other section. Lock cap according to one of claims 2 to 4, characterized in that in the unassembled state, the maximum diameter (D _A ) of each section is greater than the diameter of its associated hole. Lock cap according to one of claims 2 to 5, characterized in that the two sections by a separating section ( 46 ) are separated from each other, at which the connecting pin has its largest diameter (DV). Lock cap according to claim 6, characterized that the diameter of the separating section in the assembled state greater than the diameter of the holes so he is outside the holes lies. Locking cap according to one of the preceding claims, characterized in that its ends are in the form of rounded caps ( 48 ) are formed. Lock cap according to one of the preceding claims, characterized characterized in that the connecting pin is mirror-symmetrical to a mirror plane (E) is. Lock cap according to claim 6 and claim 9, characterized in that the separating section ( 46 ) lies in the mirror plane (E). Lock cap according to one of the preceding claims, characterized in that the connecting pin is rotationally symmetrical a rotation axis (R) is. Lock cap according to one of the preceding claims, characterized characterized in that the connecting pin consists of metal. Lock cap according to claim 12, characterized in that that the metal is a light metal. Lock cap according to one of claims 12 or 13, characterized in that the connecting pin by a Extrusion process is made. Lock cap according to one of the preceding claims, characterized characterized in that all connection units have the same structure are and that all holes and all connecting pins extend parallel to each other.