DE102017107976B4 - Belt lock with engagement elements engaging in the cable - Google Patents

Abstract

Belt buckle (1) for a safety belt system, comprising a spring-loaded locking mechanism (2) for locking a belt tongue (4) inserted into a lock housing (3) and a pushbutton (5) guided displaceably under spring action on the lock housing (3) for unlocking the belt buckle (1) required applying the locking mechanism (2), wherein the belt buckle (1) on a vehicle fastening cable (6) by means of a lock housing (3) fixed fastening device (7) is fixed and the fastening device (7) a plate-shaped base body (8), from which a fastening element (9, 17) protrudes in an axial direction (10), characterized in that between the base body (8) and the cable (6) and / or between the lock housing (3) and the rope (6) a plurality of engagement elements (11) are arranged, which are pressed into the cable (6) and secure it against displacement and rotation.

Description

The present invention relates to a buckle for a safety belt system, comprising a spring-loaded latch mechanism for locking a belt tongue pushed into a lock housing and with a displaceably guided on the lock housing push button to the required for unlocking the buckle loading of the locking mechanism, wherein the buckle on a Vehicle fastening rope is fastened by means of a fastening device attached to the lock housing and the fastening device comprises a plate-shaped base body, from which a fastening element projects in an axial direction.

From the US 4,454,634 For example, a buckle is known, which has a locking mechanism which is spring-loaded in non-inserted state of the belt tongue in the opening direction and with inserted belt tongue in the closing direction. In the locking position of the locking mechanism, a latch is held by a locking pin in engagement with the belt tongue. The locking pin in turn is guided in an L-shaped sliding guide in a lock housing and movable by a guided on the lock housing actuating button.

The buckle is attached by a rope to a vehicle. The rope is guided in the buckle as a loop. The loop abuts against a contact surface of a contact projection of a fastening device. The fastening device comprises a plate-shaped base body from which protrudes the abutment projection in an axial direction, from which in turn protrudes a Rivietungsstift. The fastening device is fastened to the lock housing by means of the riveting pin passing through the lock housing.

Another buckle with a fastening device for a rope is for example off US 2017/0 006 973 A1 known. In this buckle a cross-rope holding device is provided to prevent displacement of the rope relative to the body. However, it has been found that twisting of the buckle to the rope is still possible, which is undesirable.

A buckle with the features mentioned above is also made DE 10 2014 102 568 B3 Known in which are arranged radially offset from the main body cable holders to the fastener. The cable holders have to the contact surface in the radial direction at such a distance that the rope can be arranged in the radial direction between the contact surface and the cable supports, whereby the cable supports form a guide for the rope.

Object of the present invention is therefore to solve the problems described with reference to the prior art and in particular to provide a buckle, which is securely attached in a predetermined orientation to the rope.

The object is achieved by a buckle with the features of the independent claim. Advantageous developments of the buckle are given in the dependent claims and in the description, wherein individual features of the advantageous developments in a technically meaningful manner are combined with each other.

The object is achieved in particular by a buckle with the features mentioned, in which between the body and the rope and / or between the lock housing and the rope several engagement elements are arranged, which are pressed into the rope and secure it against displacement and rotation ,

It is therefore provided in particular that on the base body, the lock housing and / or an independent component more referred to as engagement elements protrusion designs are formed, which deformed during attachment of the fastening device on the lock housing the rope and dig into particular strands of the rope. In this way, a positive and / or non-positive connection between the buckle and the rope is given, so that a relative movement of the buckle and rope is reliably prevented. During attachment of the fastening device to the lock housing, the cable is deformed by the engagement of the engagement elements in the cable.

The axially projecting fastener may be formed as a riveting pin, which is riveted to the lock housing. Alternatively, the fastener may be formed as a threaded pin which is screwed into a thread in the lock housing for attachment. In this context, the base body and the threaded pin formed thereon may be designed in particular as a simple screw.

The locking mechanism comprises, in particular, one or more springs, a latch which fixes the belt tongue in the locking position and is pivotably mounted on the lock housing, a locking pin securing the bolt in the locking position, and a spring-loaded lever which cooperates with the locking pin. Furthermore, a cooperating with the belt tongue ejector is provided. The lever is in particular so pivotally mounted on the actuated by the belt tongue ejector, that acting on the lever spring can load the lever in a de-locking or locking operation from a neutral position either in the locked position or unlocked position. The lever is arranged so that it holds the locking pin in the locking position so that the locking pin sets the bolt in the locked position. Regarding the more accurate function of the locking mechanism be on US 4,454,634 which is fully incorporated herein by reference to the function of the components of the latch mechanism. Furthermore, in this context, the DE 10 2008 022 675 B3 and US 2017/0 006 973 A1 to the Applicant, which is also fully incorporated by reference to the function of the latch mechanism.

The plate-shaped main body of the fastening device extends in particular in a longitudinal direction, in a direction orthogonal to the longitudinal direction and in an axial direction which is orthogonal to the longitudinal direction and width direction, wherein the plate-shaped base body in particular has a smaller dimension in the axial direction than in longitudinal and width direction. Of the spanned in the longitudinal direction and width base of the base body can protrude in the axial direction of a plant projection. Radially to the axial direction of the abutment projection on a contact surface, against which an inner side of a loop formed by the cable, wherein the cable can rest in the axial direction on the base surface. From the abutment protrusion, in turn, the fastener can protrude in the axial direction, which is attached to the lock housing by, for example, rivets or screws. The fastening element has in particular a circular cross-section.

Preferably, the engagement elements are integrally formed on the base body and / or on the lock housing. The engagement elements can be formed by forming during the manufacture of the lock housing or cast directly with the main body.

Alternatively it can be provided that the engagement elements are arranged on an annular disc which is attached over the fastening element. In this case, the disk is in particular also pushed over the abutment projection, so that the disk is centered.

In principle, it can be provided that the engagement elements are arranged on a side facing the cable end of the disc. The engagement elements are then so in the axial direction of the disc out.

Alternatively it can be provided that the engagement elements protrude radially from the disc and protrude in the axial direction via a plane formed by the end face of the disc. In this case, the disc is thus disposed within the loop of the rope, wherein the radially projecting from the disc engagement elements between the rope and the base body or between the cable and lock housing are arranged.

Preferably, the engagement elements are circular and evenly distributed in the circumferential direction on the base body, the lock housing and / or the disc arranged. In particular, in the arrangement of the engagement elements on the disc or on the base body, it is therefore irrelevant in which rotational position, these elements are arranged in the buckle. In all rotational positions a secure fixation of the rope is achieved.

In order for the engagement elements to be able to deform the cable with a comparatively small expenditure of force, the engagement elements can taper in the direction of the cable in a pointed or wedge-shaped manner.

The engagement elements may for example be tooth-shaped arranged radially on the outside of the main body or on the disk, wherein these are in particular arranged so that they are at least partially pressed outside the center line of the rope in the rope. In particular, when the cable rests against the radial abutment surface of the abutment projection, engage at least some of the engagement elements radially outward to the center line of the rope in the rope. Tooth-shaped engagement elements can be assumed in particular when the extent of the tooth in the radial direction and in the circumferential direction is less than the diameter of the rope.

Alternatively, it can be provided that the engagement elements extend in the radial direction over at least half the rope diameter, preferably over the entire rope diameter over the rope. The elongated engagement elements thus cover the entire rope thickness in their projection. The engagement elements can extend exclusively in the radial direction. However, it can also be provided that the extension direction of the engagement elements has a radial and a component in the circumferential direction.

The rope is arranged in particular loop-shaped in the buckle and the engagement elements are at least arranged so that they engage in the belt buckle interior facing portion of the loop.

In particular, protruding from a base of the body in the axial direction is an abutment with a radial abutment surface for a loop formed by the cable, the attachment protruding from the abutment.

• 1: ein Gurtschloss aus dem Stand der Technik mit einer Befestigungsvorrichtung,
• 2: einen Schlosskörper mit einer Befestigungsvorrichtung in perspektivischer Ansicht,
• 3: eine Aufsicht auf den Schlosskörper gemäß 2,
• 4: einen Grundkörper in Seitenansicht,
• 5: eine Querschnittsansicht durch den Grundkörper im vernieteten Zustand und
• 6: einen Querschnitt durch eine weitere Ausführungsform einer Befestigungsvorri chtung.

The invention and the technical environment are explained below by way of example with reference to FIGS. It show schematically

• 1 a prior art buckle with a fastening device,
• 2 : a lock body with a fastening device in perspective view,
• 3 : a view of the lock body according to 2 .
• 4 : a main body in side view,
• 5 a cross-sectional view through the body in the riveted state and
• 6 : A cross section through another embodiment of a Befestigungsvorri direction.

1 shows a buckle 1 from the prior art with a lock housing 3 in which a bar 15 comprehensive locking mechanism 2 is arranged. In a closed position of the buckle 1 is a belt tongue 4 from the bar 15 in the lock housing 3 established. By pressing a pushbutton 5 , which is slidable to the lock housing 3 is attached, the locking mechanism 2 pressed, leaving the belt tongue 4 is solved. The exact function of the locking mechanism 2 is described in detail in the prior art and irrelevant to the present invention.

The buckle 1 is by means of a rope 6 attached to a vehicle. The rope 6 is in the lock housing 3 as a loop 16 guided and by means of a fastening device 7 about as a riveting pin 9 trained fastener of the fastening device 7 to the lock housing 3 riveted. The fastening device 7 as well as the cooperating rope 6 are described in more detail in the following embodiments.

In the 2 and 3 is a lock body 3 shown on which a rope 6 by means of a basic body 8th a fastening device 7 is fixed.

How out 4 It can be seen, which is a basic body 8th before attachment to the lock housing 3 shows, the body indicates 8th at a base 12 several tooth-shaped engagement elements 11 on, in an axial direction 10 protrude. The main body 8th also has a investment advantage 13 on, on the radial contact surface 14 the rope is in an assembled state. From the investment advantage 13 is a riveting pin 9 before, with which the main body 8th on the lock housing 3 riveted.

Like from the 5 shows, engage in the riveted state, the engagement elements 11 in the loop section 16 of the rope 6 one at the radial contact surface 14 is applied, wherein the engagement elements 11 a centerline of the rope 6 spread.

At the in 6 illustrated embodiment, the fastener is a threaded pin 17 formed, which in a thread in the lock housing 3 is screwed, so that formed on a disc engagement elements 11 in the rope 6 intervention. The fastening device 7 So includes a screw that the engagement elements 11 pushes into the rope.

Through the engagement of the engagement elements 11 in the rope 6 is the buckle 1 relative to the rope 6 secured against twisting and shifting.

LIST OF REFERENCE NUMBERS

1

buckle

2

locking mechanism

3

lock housing

4

belt tongue

5

pushbutton

6

rope

7

fastening device

8th

body

9

Vernietungsstift

10

axial direction

11

engaging member

12

Floor space

13

abutment projection

14

radial contact surface

15

bars

16

loop

17

Set screw

Claims (10)

Belt buckle (1) for a safety belt system, comprising a spring-loaded locking mechanism (2) for locking a belt tongue (4) inserted into a lock housing (3) and a pushbutton (5) displaceably guided on the lock housing (3) for unlocking the belt buckle (1) required the locking mechanism (2), wherein a cable (6) securing the buckle (1) to a vehicle is fastened by means of a fastening device (7) fastened to the lock housing (3) and the fastening device (7) comprises a plate-shaped base body (8), of which a fastening element (9, 17) protrudes in an axial direction (10), characterized in that a plurality between the base body (8) and the cable (6) and / or between the lock housing (3) and the cable (6) Engagement elements (11) are arranged, which are pressed into the rope (6) and secure it against displacement and rotation. Belt lock (1) to Claim 1 , wherein the engagement elements (11) are integrally formed on the base body (8) and / or on the lock housing (3). Belt lock (1) to Claim 1 , wherein the engagement elements (11) are arranged on an annular disc which is fitted over the fastening element (9, 17). Belt lock (1) to Claim 3 in that the engagement elements (11) protrude radially from the disk and protrude in the axial direction (10) via a plane of the disk formed by the end face. Buckle (1) according to one of the preceding claims, wherein the engagement elements (11) are arranged uniformly in the circumferential direction. Belt lock (1) according to one of the preceding claims, wherein the engagement elements (11) run in the direction of the rope (6) pointed or wedge-shaped. Belt lock (1) according to one of the preceding claims, wherein the engagement elements (11) are tooth-shaped radially outside of the base body (8) or arranged on a disc. Belt lock (1) to Claim 7 wherein the tooth-shaped engagement elements (11) are arranged so that they are at least partially pressed outside the center line of the rope (6) in the rope (6). Belt buckle (1) after one of Claims 1 to 6 , wherein the engagement elements (11) extend in the radial direction over at least half the rope diameter over the cable (6). A buckle (1) according to any one of the preceding claims, wherein from a base (12) of the body (8) in the axial direction (10) has an abutment projection (13) with a radial abutment surface (14) for one of the cable (6) Loop (16) protrudes, wherein the fastening element (9, 17) from the abutment projection (13) protrudes.

Images