DE102014015342A1 - Seat belt buckle and method for assembling a main body of a belt buckle - Google Patents

Abstract

A Gurtschlossbringer has a stationary vehicle-fixed fastened base body and mounted on the base body, by a drive provided on the base body movable carriage to which a buckle is coupled. The main body is designed as a self-supporting unit, with a carrier (32), the two side walls (34) forming the narrow sides of the body and at least one transverse web (36a, 36b, 36c) connecting the side webs (34) and between the side webs (36a, 36b, 36c) has a receptacle for an electric motor (22) of the drive, and with a separate back plate, which is connected to the two side webs (34) and on which a mounting geometry for attachment of the main body is formed on the vehicle. During assembly of the main body, a mounting plate (82) is provided, on which a bearing plate (68) is placed, on which bearing pins (78) having spur gears (28) of the drive are mounted. The electric motor (22) and the screw (26) of the drive are inserted into the carrier (32), and this assembly is placed on the mounting plate (82), so that the spur gears (28) with the worm (26) engage and protrude through recesses provided for this purpose (48) of the side webs (34) of the carrier (32). A transverse web (36c) for fixing the electric motor (22) is used. The back plate is placed on the support (32) so that the bearing pins (78) engage in openings provided thereon on the back plate, and the back plate is fixed to the carrier (32).

Description

The invention relates to a buckle with a stationary vehicle-fixed fastened body and a movable carriage to which a buckle is coupled. In addition, the invention relates to a method for assembling a main body of a Gurtschlossbringers.

Seatbelt bucklers make it easier to fasten a seatbelt on and off by reversibly moving the buckle to an extended position via a drive in which the seatbelt buckle is easily accessible by the vehicle occupant. For normal driving, however, the buckle is moved to a retracted position in which it is not in the way of the vehicle occupant.

The object of the invention is to provide a compact and inexpensive Gurtschlossbringer.

For this purpose, according to the invention in a buckle with a stationary vehicle fixed fastened base body and mounted on the base body, by a drive provided on the base body movable carriage to which a buckle is coupled, provided that the base body is formed as a self-supporting unit. It has a carrier which has two side webs forming the narrow sides of the main body, and at least one transverse web connecting the side webs. Between the side bars a receptacle for an electric motor of the drive is provided. There is a separate back plate is present, which is connected to the two side bars and on which a mounting geometry for attachment of the body is formed on the vehicle. The carrier is compact and inexpensive to produce and allows automated assembly of Gurtschlossbringers with a few manufacturing steps.

It is possible to provide on the carrier a receptacle for a position sensor, which can detect a position of the carriage. This makes it possible to further increase the compactness of the buckle remover.

The drive preferably comprises a worm gear with a screw driven by the electric motor and two spur gears meshing with the worm. A worm gear allows a smooth and quiet movement of the carriage.

To further simplify assembly, the spur gears can be mounted on a separate bearing plate, which is used in particular in a recess of the carrier.

The bearing plate is for example a U-shaped angled flat material with two projecting legs and an intermediate central portion, wherein the legs are parallel to adjacent transverse webs and the central portion extends parallel to the back plate. At the central portion bearings are provided for the spur gears. Opposing bearings are arranged for example in the back plate.

To the side bars, the bearing plate is preferably open, and the spur gears protrude slightly beyond the bearing plate.

The legs of the bearing plate and the back plate can be positively connected directly by teeth inserted in openings. The compound can be produced by a pure form-fitting, for example by a stamped connection, but also by a material connection by means of hump or laser welding, wherein the teeth of the bearing plate are firmly welded to the back plate. Alternatively or additionally, it would also be possible to connect the legs of the bearing plate with the transverse webs.

In order to keep the number of components as low as possible, a support for the screw of the drive is preferably provided in the carrier.

A recess is advantageously provided in each of the side webs, through which a spur gear projects laterally through, which is in engagement with a toothed rack structure on the carriage in order to move the carriage. This results in a compact design with a high structural stability of the wearer.

The rack structure is preferably formed on opposite side webs of the carriage, so that the carriage is moved with a uniform, symmetrical force.

The uniform movement of the carriage can be supported by the fact that outside of each of the side webs a guide for the carriage is formed. The guide can be realized, for example, by a groove extending along the side web.

On its back, on which rests the back plate, the side bars may each have a protruding from the back web, the back plate is positioned between the webs. In this way, a simple, positionally accurate mounting of the back plate is possible. The web preferably defines a shoulder on which rests the back plate.

To minimize the space perpendicular to the extension of the back plate, it is possible in the Provide back plate recesses into which the electric motor and the screw protrude, but preferably no component protrudes through the back plate through.

On the side facing away from the back plate, in particular the worm and / or the electric motor project beyond the side webs of the carrier, when the carriage is formed perpendicular to the longitudinal direction of the side webs with sufficient distance to the base body.

In a preferred embodiment, three transverse webs are provided, each extending perpendicular to the side webs. Two of the transverse webs are advantageously placed respectively at the axial ends of the side webs, while the third transverse web is arranged between the axial ends.

Two of the transverse webs are preferably fixed or integrally connected to the side webs, in particular one of the end-side transverse webs and the middle transverse web.

For storage of the screw can be provided in the fixed end-side transverse web, a through hole, so that a bearing pin can be inserted to form an end bearing point after insertion of the screw in the recess provided in the carrier.

The electric motor is advantageously mounted on an integrally connected with the side webs cross bar and a crosspiece separately prepared. The two transverse webs can limit a receptacle of the electric motor and preferably also form a bearing for the electric motor itself.

The second end crosspiece is preferably connected to the side bars only after the assembly of the electric motor in order to use the electric motor easily in the carrier can.

At least one of the transverse webs may have a complementary to a portion of the outer circumference of the electric motor housing recess in which one end of the electric motor is received, the recording is preferably torque-resistant, so that the electric motor is held as free of play in the carrier and the torques occurring during operation on the Basic body can be forwarded to the vehicle.

The second end crosspiece preferably has openings for the passage of electrical connections of the electric motor in order to simplify the cable routing.

The attachment of the Gurtschlossbringers on the vehicle can be carried out over a portion of the back plate which protrudes in the longitudinal direction over the carrier, wherein the mounting geometry, in particular in the form of a mounting opening, is formed on the projecting portion.

• – Bereitstellen eine Montageplatte,
• – Platzieren der Lagerplatte auf der Montageplatte und Montieren der Lagerstifte aufweisenden Stirnräder des Antriebs an der Lagerplatte,
• – Einsetzen des Elektromotors und der Schnecke des Antriebs in den Träger,
• – Aufsetzen des Trägers samt Elektromotor auf die Montageplatte, sodass die Stirnräder mit der Schnecke in Eingriff kommen und in dafür vorgesehenen Aussparungen der Seitenstege des Trägers ragen,
• – Befestigen eines Querstegs zur Fixierung des Elektromotors,
• – Aufsetzen der Rückenplatte auf den Träger, sodass die Lagerstifte in dafür vorgesehene Ausnehmungen an der Rückenplatte eingreifen, und
• – Fixieren der Rückenplatte am Träger.

To assemble the body of a buckle former described above, the following steps are performed:

• Providing a mounting plate,
• Placing the bearing plate on the mounting plate and mounting the bearing pins having spur gears of the drive to the bearing plate,
• Inserting the electric motor and the worm of the drive into the carrier,
• Placing the carrier together with the electric motor on the mounting plate so that the spur gears engage with the worm and protrude into recesses provided in the lateral webs of the carrier,
• Fixing a crosspiece for fixing the electric motor,
• - Place the back plate on the support, so that the bearing pins engage in recesses provided for this on the back plate, and
• - Fix the back plate on the carrier.

By means of the mounting plate adapted to the geometry of the carrier, the entire basic body can be quickly and precisely assembled automatically, including the fixing of the back plate to the carrier.

The attachment of the end-side transverse web can be done before placing the carrier on the mounting plate, or the crosspiece can be postponed after placing the carrier on the mounting plate on the axial end.

The mounting plate preferably has pin receptacles for the bearing pins over which the bearing plate is positioned together with spur gears. It is possible to insert as a first step, the bearing pins for the spur gears in the pin receivers, then put the bearing plate so that the bearing pins protrude through the bearing plate and engage either in the attached together with the bearing plate spur gears or the spur gears separately after placing the bearing plate on put on the bearing pins.

The pin receptacles provide an exact mounting position for the individual components of the body, in particular for the bearing plate and the spur gears on the bearing pins and for the carrier and the back plate on the teeth on the legs of the bearing plate, which protrude through openings in the carrier and in the back plate ,

The fixing of the back plate on the frame body can be done for example by projection welding, wherein the mounting plate one of Forms welding electrodes. In this case, the back plate can be fixed directly in the mounting position, without the mounted assembly must be moved. Only the second electrode is pressed onto the back plate in order to achieve the contact force required for projection welding and to allow the necessary flow of current. The humps required for projection welding can be formed on the back plate and / or on the carrier.

In the same step, the legs of the bearing plate, which are in contact with the back plate, can be welded, the teeth serve as a weld hump.

Alternatively, of course, an attachment of the back plate and the bearing plate z. B. possible by laser welding or embossing.

The invention will be described in more detail below with reference to an embodiment with reference to the accompanying drawings. In the drawings show:

1 a schematic representation of a Gurtschlossbringers invention in a front view;

2 the main body of Gurtschlossbringers off 1 in a front view;

3 the main body out 2 in a rear view;

4 to 6 various schematic perspective views of the body 2 ;

7 to 12 Assembly steps during assembly of the body 2 ;

13 a carrier of the main body 2 with inserted drive in a perspective front view; and

14 the module off 13 in a perspective rear view.

1 shows a buckle charm 10 , with a rigid, vehicle-fixed fastened body 12 , At the base body 12 is one the main body 12 at least partially encompassing carriage 14 mounted reversibly along a displacement path V along a longitudinal axis A of the Gurtschlossbringers 10 is movable.

The sled 14 has a lead 16 on, on which a in 1 indicated belt buckle 18 can be fixed, for example via a mounting hole in the projection 16 ,

To move the carriage 14 is a drive 20 provided, here an electric motor 22 as well as one from the electric motor 22 driven worm gear 24 with a snail 26 as well as two on opposite sides with the snail 26 combing spur gears 28 has, which serve as worm wheels (see also the following figures).

The spur wheels 28 grab into a rack contour 30 a (indicated in 1 ) on opposite insides of the narrow sides of the carriage 14 is trained.

By operation of the electric motor 22 can the sled 14 along the direction of displacement V from the in 1 shown retracted position are moved to an extended position in which the buckle 18 is easily accessible to the vehicle occupants. After buckling or unbuckling the buckle 18 by reversing the direction of rotation of the electric motor 22 moved back to the retracted position.

The main body 12 is a compact, self-supporting unit. A carrier 32 forms a framework on which all other components are incorporated. The carrier 32 has two parallel narrow side bars 34 on, passing through two crossbars 36a . 36b are connected, such as in 7 can be seen. One of the crossbars 36a is located at one of the axial ends of the carrier 32 while the second crossbar 36b is arranged between the two axial ends. The sidewalks 34 and the two crossbars 36a . 36b are firmly connected to each other, and in the example shown here in one piece with each other. The carrier 32 is preferably made of a suitable metal and can be made for example in a die-casting process.

In the two transverse bridges 36a . 36b is a storage for the snail 26 of the worm gear 24 educated. The end crossbar 36a may have a passage opening through which after insertion of the screw 26 into their reception in the vehicle 32 a bearing pin is inserted to the snail 26 to fix (not shown).

The middle crossbar 36b has a passage opening 38 ( 7 ) for a wave 40 of the electric motor 22 on, about which the worm gear 24 is driven.

For the electric motor 22 is a recording between the side bars 34 provided between the middle crossbar 36b and another, first from the carrier 32 separate crossbar 36c lies. The third crossbar 36c will be after inserting the electric motor 22 with the side bars 34 connected (see 9 and 10 ) and then close the carrier 32 at its second axial end.

In the crossbar 36c here are two recesses 42 provided by the electrical connections 44 of the electric motor 22 protrude. In addition, the crosspiece points 36 at his to the electric motor 22 directed side another recess 46 on, to the outer contour of the axial end of the electric motor 22 is adjusted and in which the electric motor 22 essentially free of play and torque-resistant is added.

Each of the sidewalks 34 has a recess 48 ( 9 and 10 ), through which one of the two spur gears 28 laterally out of the carrier 32 can protrude. In this example, the recesses are 48 designed so that only on one of the long sides of the side bar 34 a narrow bridge 50 stops while the recess 48 on the opposite side is open.

The jetty 50 is part of a footbridge 52 running along the entire length of the sidewalls 34 runs and between the middle crossbar 36b and the open end of the carrier 32 one shoulder 54 limited.

A back plate 56 is so on the carrier 32 arranged that they are between the two webs 52 lies and each on the shoulder 54 rests. This is for example in the 11 and 12 clearly visible.

The bridges 52 and shoulders 54 be used to fix the back plate 56 on the carrier 32 used, as will be described later.

The back plate 56 is basically flat. At one axial end it stands over the carrier 32 before and has a mounting geometry 60 on, here in the form of a fastening eye, over which the belt buckle 10 can be connected to the vehicle.

Each of the sidewalks 34 also has a guide 62 for the sled 14 , here in the form of a middle crossbar 36b to the axial end of the crosspiece 36c extending groove into which a (not shown) projection on the carriage 14 intervenes. In this example, part of the leadership 62 also in the crossbar 36c educated.

In the back plate 56 is a recess 64 provided on the outer circumference of the electric motor 22 is adapted and in which the electric motor 22 protrudes. However, the dimensions and arrangement are such that the electric motor 22 not opposite the outside of the back plate 56 protrudes (see 12 ).

Also in the area of the snail 26 has the back plate 56 a recess 66 on, in which the snail 26 protrudes, but it does not protrude over. The belt locker 10 So it can be mounted so that the back plate 56 rests on a vehicle part over its entire extent. At the same time the required space is perpendicular to the plane of the back plate 56 as far as possible reduced.

The spur wheels 28 of the worm gear 24 in this example are on a separate bearing plate 68 arranged, for example, in the 4 and 9 is shown. The bearing plate 68 is a U-shaped angled flat material with two perpendicular from a flat central portion 70 protruding thighs 72 ,

The bearing plate 68 is so in the carrier 32 Inserted that to the crossbars 36a . 36b adjoins and that the spur gears 28 between the thighs 72 laterally over the bearing plate 68 protrude and through the recesses 48 in the side bars 34 protrude.

The bearing plate 68 has at her to the electric motor 22 pointing thigh 72 a recess 73 for the passage of the shaft 40 of the electric motor 22 ,

In the carrier 32 as well as in the back plate 56 are several through holes 74 formed by the assembled state of the legs 72 protruding teeth 76 intervention. The openings 74 are on the width of the teeth 76 Voted. This is for example in the 3 . 5 and 11 to recognize. The openings 74 in the carrier 32 can be considered over the entire length of the thighs 72 extending slots in the transverse webs 36a . 36b be formed while the openings 74 in the back plate 56 also in the direction along the thighs 72 only slightly longer than the teeth 76 , The thigh 72 and the teeth 76 the bearing plate 68 can also be in close proximity to the transverse jetties 36a . 36b be arranged, with openings in the transverse webs 36a . 36b can be waived.

openings 74 and teeth 76 serve the connection of the bearing plate 68 with the back plate 56 , Depending on the chosen connection method, the geometry of openings 74 and teeth 76 adjusted accordingly to z. B. for a stamping process, a projection welding method or a laser welding process to give an optimal solid connection.

In the bearing plate 68 are in the middle section 70 two openings provided by the bearing pins 78 stick out the axles for the spur gears 28 form.

In the back plate 56 are the openings in the bearing plate 68 opposite openings 80 trained, the bearing points for the bearing pins 78 represent, so the axes of the spur gears 28 between the bearing plate 68 and the back plate 56 are fixed.

The bearing pins 78 may have at one axial end a radial thickening, which has a larger diameter than the opening in the bearing plate 68 , At the other axial end they can with the back plate 56 positively and / or materially connected by embossing, projection or laser welding.

In the 7 to 12 is the assembly of the main body 12 of the bucklebringer 10 shown.

First, the snail 26 into their reception in the vehicle 32 used and stored there rotatable. Then the electric motor 22 between the side bars 34 of the carrier 32 pushed in, with the shaft 40 through the opening 38 protrudes and in a suitable way with the snail 26 is coupled.

On a mounting plate 82 , The structures in the form of recesses and / or projections for the exact positioning of the components of the body 12 has, the bearing pins 78 for the spur gears 28 plugged into designated pin holders.

Then the bearing plate 68 on the bearing pins 78 put on, so that by the in the bearing plate 68 protrude openings provided. Subsequently, the two spur gears 28 on the bearing pins 78 attached.

The carrier 32 with the mounted worm and the mounted electric motor 22 is on the bearing plate 68 with the spur wheels 28 put on so that the spur gears 28 in engagement with the snail 26 come. Here are the side bars 34 set up so that the recesses 48 over the spur wheels 28 lie so that they are laterally over the side bars 34 protrude.

The teeth 76 the thigh 72 the bearing plate 68 protrude through the openings 74 therethrough.

The third crossbar 36c becomes in the axial direction A on the free axial end of the side bars 34 deferred, wherein also the outer circumference of the axial end of the electric motor 22 in the recess 46 to come to rest. This step can also be done before putting on the wearer 32 on the mounting plate 82 respectively.

Now the back plate 56 on the carrier 32 placed so that these between the bars 52 on the carrier 32 is arranged and on the shoulders 54 rests. In addition, the teeth grip 76 the bearing plate 68 in the openings 74 as well as the bearing pins 78 in the openings 80 the back plate 56 one.

Finally, the back plate 56 with the carrier 32 and the bearing plate 68 as well as the bearing pins 78 firmly connected. If this is done by projection welding, then the mounting plate is used 82 as one of the electrodes, and a second electrode (not shown) is applied to the backplate with a suitable contact force 56 pressed through a current flow between the two electrodes, the material is heated in the contact area, so that a welding of the back plate 56 on the carrier 32 , in particular in the area of the webs 52 and shoulders 54 as well as with the bearing plate 68 over the teeth 76 and openings 74 and with the bearing pins 78 over the openings 80 he follows.

It is also possible to achieve these compounds via a laser welding process. In this case, the mounting plate 82 usable to determine the exact position of the assembly.

It would also be possible to use the back plate 56 by attaching an embossing step, also in this case, the mounting plate 82 serve as a support and abutment for a (not shown) die.

All components of the basic body 12 can be in the described steps using the mounting plate 82 put together.

The finished body 12 is from the mounting plate 82 lifted and with the sled 14 to the finished belt locker 10 further processed.

The mounting plate 82 will be reused.

Claims (16)

Gurtschlossbringer with a stationary vehicle-fixed fastened body ( 12 ) and one on the main body ( 12 ), by one at the base body ( 12 ) drive ( 20 ) movable carriage ( 14 ), on which a buckle ( 18 ) can be coupled, wherein the main body ( 12 ) is formed as a self-supporting unit, with a carrier ( 32 ), two of the narrow sides of the main body ( 12 ) forming side bars ( 34 ) and at least one of the side bars ( 34 ) connecting crosspiece ( 36a . 36b . 36c ) and between the side bars ( 36a . 36b . 36c ) a receptacle for an electric motor ( 22 ) the drive ( 20 ), and with a separate back plate ( 56 ), with the two side bars ( 34 ) and at which a fastening geometry ( 60 ) for fixing the base body ( 12 ) is formed on the vehicle. Seat belt buckle according to claim 1, characterized in that the drive ( 20 ) a worm gear ( 24 ) with one from the electric motor ( 22 ) driven screw ( 26 ) as well as two with the snail ( 26 ) meshing spur gears ( 28 ). Seat belt buckle according to claim 2, characterized in that in the carrier ( 32 ) a storage for the screw ( 26 ) of the drive ( 20 ) is provided. Seat belt buckle according to one of claims 2 and 3, characterized in that the spur gears ( 28 ) on a separate bearing plate ( 68 ) are stored. Belt lock according to one of claims 2 to 4, characterized in that the bearing plate ( 68 ) a U-shaped angled flat material with two protruding legs ( 72 ) and an intermediary middle section ( 70 ), wherein the legs ( 72 ) parallel to adjacent transverse webs ( 36a . 36b ) and the middle section ( 70 ) parallel to the back plate ( 56 ) and bearings for the spur gears ( 28 ) Has. Seat belt buckle according to claim 5, characterized in that the legs ( 72 ) of the bearing plate ( 68 ) and the back plate ( 56 ) through in openings ( 74 ) inserted teeth ( 76 ) are positively connected with each other directly. Belt buckle according to one of claims 2 to 6, characterized in that in each of the side webs ( 34 ) a recess ( 48 ) is provided, through which a spur gear ( 28 protruding laterally into engagement with a rack structure ( 30 ) on the slide ( 14 ). Seat belt buckle according to one of the preceding claims, characterized in that on the outside of each of the side webs ( 34 ) a guided tour ( 62 ) for the sledge ( 14 ) is trained. Seat belt buckle according to one of the preceding claims, characterized in that the side webs ( 34 ) each on its back, on which the back plate ( 56 ) rests, a projecting from the back web ( 52 ) and the back plate ( 56 ) between the bridges ( 52 ) is positioned. Seat belt buckle according to one of the preceding claims, characterized in that three transverse webs ( 36a . 36b . 36c ) are provided, which are perpendicular to the side bars ( 34 ). Seat belt buckle according to one of the preceding claims, characterized in that the electric motor ( 22 ) on one piece with the side bars ( 34 ) connected crosspiece ( 36b ) and a crosspiece made separately ( 36c ) is stored. Seat belt buckle according to one of the preceding claims, characterized in that a transverse web ( 36c ) to a portion of the outer circumference of the electric motor ( 22 ) complementary recess ( 46 ), in which one end of the electric motor ( 22 ), is preferably recorded torque-resistant. Seat belt buckle according to one of the preceding claims, characterized in that a portion of the back plate ( 56 ) in the longitudinal direction (A) over the carrier ( 32 ) and the attachment geometry ( 60 ), in particular in the form of a fastening opening, is formed on the projecting portion. Method for assembling a basic body ( 12 ) a Gurtschlossbringers ( 10 ) according to any one of the preceding claims, comprising the steps of: - providing a mounting plate ( 82 ), - placing the bearing plate ( 68 ) on the mounting plate ( 82 ) and mounting the bearing pins ( 78 ) having spur gears ( 28 ) of the drive ( 20 ) on the bearing plate ( 68 ), - inserting the electric motor ( 22 ) and the snail ( 26 ) of the drive ( 20 ) in the carrier ( 32 ), - placing the carrier ( 32 ) with electric motor ( 22 ) on the mounting plate ( 82 ), so that the spur gears ( 28 ) with the snail ( 26 ) and by provided therefor recesses ( 48 ) of the side bars ( 34 ) of the carrier ( 32 ), - fixing a crosspiece ( 36c ) for fixing the electric motor ( 22 ), - placing the back plate ( 56 ) on the carrier ( 32 ), so that the bearing pins ( 78 ) in openings ( 80 ) on the back plate ( 56 ), and - fixing the back plate ( 56 ) on the carrier ( 32 ). Method according to claim 14, characterized in that the mounting plate ( 82 ) Pin recesses for the bearing pins ( 78 ), over which the bearing plate ( 68 ) with spur gears ( 28 ). A method according to claim 14 or 15, characterized in that the fixing of the back plate ( 56 ) on the carrier ( 32 ) by projection welding and that the mounting plate ( 82 ) forms one of the welding electrodes.

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