DE2334388A1 - Vehicle safety belt locking mechanism - housing halves held together by pins also holding locking plate - Google Patents

Abstract

This safety belt lock, used preferably for the three support point safety belts in motor vehicles, has a housing which receives the minimum depth equal to a belt width of the first part of the belt and the belt end is locked under spring load. This lock is readily opened by one hand. The lock halves are held together by rivets or screws. These fasteners also anchor the locking plates whose one end has a slot for the anchoring bolt head. The housing contains a locking plate with a curved slot. This locking plate with slot rotates about a pivot and the plate is spring loaded. This locking plate rotates relative to the housing and the housing has a hooking member at the opening slot of the lock.

Description

DIPL.-ING. OR KRETZSCHMAR ₂ Hamburg ι

AT STROHHAUSE PATENTANWALT «UF 0411/2467 * 3

Company K / Stö - 4355

Nürnberger & Co. '■ <. ■ ■■;, -: -. · '}

Hamburg

Legal file: 4-355

Locking device for a seat belt

The invention relates to a locking device for a safety belt, preferably of the three-point type for motor vehicles, with a belt part that is attached to a Side, in particular the outside, of a seat is arranged next to this and above it, and one second, possibly belt-like, part with the locking device on the other side of the seat, the locking device being a rigid, hook-shaped Has element, in the slot with the minimum depth of a belt width of the first belt part can be inserted and that can be locked under spring load, which releasably secures the opening of the slot in the closed position.

This includes the fact that on the tongue of the hook plate an obliquely directed and extending over the slot Approach is provided.

In such a known embodiment according to DAS 1 812, the rigid, hook-shaped element is pivotable on one stored rigid rail to be firmly connected to the vehicle floor. The storage is in an area that is located near the closed end of the slot, and a spring tends to close the open end of the Slot

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ACCOUNTS DRESDNER BANK, ACCOUNT NO. 9229371 POST CHECK HAMBURG NO. I93766-2O8

to pull on the rigid rail. For locking, there is a pivot lever on the leg of the hook-shaped one facing the rail Element fastened and bridged with one end of the slot mouth and stands with the other end, the as Handle is used from the leg on which it is mounted. Located on the other leg of the hook-shaped element a contact pin, on which the pivot lever with the part bridging the slot opening from the slot side is pressed forth by a spring. The locking mechanism can be opened by turning the pivot lever against it the spring is pivoted to release the slot opening, but the part bridging the slot opening into the Slot in and out of this must then be moved.

This is unfavorable in the event of danger because the swivel lever find an abutment or an obstacle on the inserted belt can, so that the opening of the slot is impaired or even prevented. This is also not avoided by that the locking pin is on the side of an approach is located, which extends obliquely over the slot.

In addition, the operation and also the function is complicated and requires considerable attention or a Two-hand operation that the hook-shaped element is rotatably mounted on the rail and can change its setting against the action of a spring. Because the serving as a handle end of the pivot lever can move with the hook-shaped element in relation to the rail, made more difficult not only the actuation, but also brings with it the risk that the handle will pivot due to accidental stops will.

Corresponding disadvantages arise when one leg of the hook-shaped element is arranged to be foldable and under the Effect of a tension or compression spring is because then still

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In addition, the hinged leg must be operated.

From laid-open specification 1 580 711 it is known to provide an element which can be folded into the open position by spring force, the free end of which can engage with a bent-back edge in an inclined cutout of a likewise pivotably arranged locking lever. The locking lever protrudes when the device is closed
over the foldable element, so that the risk of
accidental actuations. In addition, there is a risk of jamming in the undercut design of the bent edge and the engagement groove, which is directed obliquely towards the free end of the locking lever, so that the opening is more difficult under load. Two-handed operation is also required here.

In addition, the initially rigid articulation of the closure frame on a rail results in the risk of the inserted belt loop shifting so that almost exclusively the pivot bearing of the pivotable element is loaded or that the loop jams in the front part of the device. For this purpose, the attachment to the rail with the additional use of a
Breaking pin carried out, so in the event of an overload
the frame can also pivot to the rail. This shows at the same time that the normal removal of a seat belt is cumbersome.

The DBGM 1 880 620 also shows a locking device,
in which a hinged element is designed as an articulated arm which has a locking tab with an opening at the free end into which a spring-loaded locking element engages. This locking element has a handle-like extension under the arm through which it can be moved out of the locking position against the spring force so that the arm is under the tension of the inserted
loop

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the seat belt can swing out. This well-known version has several disadvantages. Above all, it requires both hands of the user for its operation. By the free Pivotability of the arm must be both this and the Belt to bring it under the arm. This results in the additional difficulty of being articulate supported arm at the same time to bring the locking device, which is held on a belt part, into the appropriate position.

The fact that the extension of the locking element serving as the actuating element is exposed under the arm exists in addition, there is the risk that unintentional contact will lead to the opening of the locking device. Because furthermore the the locking element is arranged in the locking position pressing spring at the end of the extension, still exists the possibility that jerky pulls on the belt, as can occur in normal traffic, lead to vibrations also affect the locking element, which ultimately an unintentional unlocking is possible.

A hook-shaped element from DAS 2 100 105 is also known as a locking element, but it is within a Housing has only a narrow entry slot for an eyelet, which is a defined intermediate piece on the first belt part is arranged. Such an intermediate piece has the disadvantage that when it is released under the action of pressure Release is thrown through the room and can lead to injuries. In addition, this hook-shaped element is which is slidably mounted on a pin in the housing, under the action of two springs, both of which strive to to move the hook-shaped element into the closed position. As a result, opening is only possible if an actuating lever is pressed until the eyelet has loosened. It should be noted that in the event of danger a reflex movement in the form of a handle to

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Locking device can be expected, but not a well thought-out actuation with a period of time for completion a function.

The invention is based on the object of a closure device to improve the type specified over the known designs to the effect that under Avoidance of an element on the first belt part inserting the loop into the locking device by one-hand operation is possible to open the slot when unlocking the belt without inward movement of a bridging Element for clear and unimpeded exit of the belt is released and under load of the closed Closure a locking is more easily released than in known designs and also particularly reliable fuses should be available for the closed locking position.

This object is achieved in that the hook-shaped element can be pivoted as an extendable and retractable hook plate is mounted in a housing, with respect to whose mouthpiece the hook tongue of the hook plate is movable such that it is locked in a position folded into the mouthpiece with the closure of the slot and by one-handed operation a locking arrangement in the other position can be folded out by releasing the hook slot.

This means that the reliability of the function and ease of operation are therefore also essential compared to known designs improved because different elements for the closure of the slot on the one hand and for locking the Hook provided in the locked position on the other hand are.

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It is preferred that the hook plate is under the load of a spring which strives to the hook tongue from the Unfold mouthpiece, and that the locking arrangement has at least one spring which tends to the locking arrangement to hold in the locking position. This means that the respective spring can always fully fulfill its task. Above all, the locking arrangement can also do so be designed to ensure optimal locking, because no special conditions are taken into account must be taken from the opening of the slot.

As a result, one-handed operation is also possible for opening heavy load due to the inserted belt loop possible. The formation of the hook slot without one in the unfolded Position the slot opening bridging element ensures a smooth and easy introduction or release a belt loop, with the rest of the spring on the Hook plate ensures that this is normally open. This not only makes it easier to introduce a loop, but also achieves that the locking device possibly only reaches the open position by pushing an otherwise concealed lever, remains in this position and thus the belt advantageously in an approximately 4-5 ° position opposite the housing opening of the mouthpiece releases. Ensures that the hook plate can be folded into a housing mouthpiece while the closure of the slot opening in the locking position without pivoting on the hook plate or a hook shank arranged element. Above all, safe opening is guaranteed even under extreme loads.

Is preferred with the arrangement of an obliquely directed and extending over the slot approach on the after external tongue of the hook plate that the approach when swiveled into the mouthpiece hook plate under a rigid Housing cover wall engages, which closes the slot in the closed position. This will back up the

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Focal plane shutter in a simple design by a different element than the locking arrangement, which makes for security contributes. The housing cover wall is expediently shaped essentially concentrically to the pivot point of the hook plate, with at least the outside of the approach is directed accordingly. This provides an additional safeguard in this regard achieved that no effects on the free end of the tongue are possible to pull out the loop.

It is particularly preferred, however, that the hook plate has a curved concentric to the pivot point on its main body Has slot which at its end facing the tongue has a right-angled or radial bend into which a spring-loaded and guided in the housing parallel to the Pivot of the hook plate directed locking pin can be snapped into the pivoted position of the hook plate. The concentric curvature of the slot causes it to be spaced from the pivot point, with one feature lies in the fact that it lies essentially at the level of the free end of the tongue. This ensures that the Load through the belt loop evenly on both the pivot pin and the lock in the area of the Distributed slot. Furthermore, a secure locking is achieved without any undercuts, that is, there is no additional resistance to overcome.

when opening and closing

The locking pin is useful on one in the housing arranged against spring force guided actuating lever, wherein the spring force strives to the locking pin in a To move direction in the sense of snapping into the bend. This achieves within the scope of the invention that per se, the hook plate strives to move into the open position, but that the locking element under the Spring loading in the sense of locking. In the preferred embodiment, the operating lever is in the housing guided push button formed, which means in his

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Guidance of directional trigger approaches is supported on axially loaded compression springs that form the locking springs. These springs, designed as compression springs, are avoided directly in their axial direction without pivoting any lever arm operated for unlocking.

The stability of the arrangement is improved by the fact that plate-shaped inside the housing centered on the central axis Guides are arranged in which the pivot pin is mounted and the one on these trimmed slot for have the locking pin, which is on the outside of the plate-shaped guides on the lever or push button is guided by bearing lugs. This is practically a Chain link-like arrangement created which is extremely stable. It is included that in the housing The rod-shaped carrier forming the second belt part is connected to the plate-shaped guides by means of a hammer head is.

The invention is described below using an exemplary embodiment which is shown in the drawing. In this show:

Fig. 1: a side view of the invention, in which the housing is open to the front and Elements are partially cut,

FIG. 2: a section along the line II-II in FIG. 1, the section again is partially only carried out on one side,

Fig. 3: an end view in section along the

Line III - III in Fig. 1 in the folded state of the hook plate,

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FIG. 4: a representation corresponding to FIG. 3 to explain the state in the unfolded position of the hook plate.

The representations are on the opposite side for clarity the actual execution executed on an enlarged scale.

In all figures, the same parts are denoted by the same reference numerals. The housing consists of two housing shells 1, 2, those at 12, 13 by rivets or screws are held together. This housing is only used to cover or guide parts. There are two in this case plate-shaped guides 5 arranged centrally to the center line. These plate-shaped guides are on the one hand mounted on the rivets or screws 12, 13, on the other hand they have Openings 14, 15, in which the hammer head 6 a T-head bolt engages. On the hammer head screw is the particular rod-shaped, belt-like part 16 is arranged, with which this belt element on one side next to is attached to the vehicle seat. The plate-shaped guide is thus rigidly mounted in the housing 1, 2. She each has Slots 17 in which a locking pin 7 is guided. The width of the slots corresponds essentially to the diameter of the locking pin. In extension A pivot pin 11 for a hook plate 3 is arranged in the plate-shaped guides 5 along the axis of the slots 17 . The hook plate 3 has a tongue 18 at the outer end, which has a slot 19 towards the main body of the hook plate 3 releases. The slot has a depth that corresponds to the width of a belt. The tongue 18 has one at the free end obliquely inwardly directed approach 20, which in the pivoted state of the hook plate 3 under a housing wall 21 engages, which is essentially concentric with the pivot pin 11 is directed and the locking against slipping out the belt loop forms. The outside 22 of the boss 20

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has a corresponding shape. The tongue 18, which is swung out in the Position is designated in Fig. 1 with 18 ', an outer encapsulation of plastic can be obtained to a easy adjustment of the belt for adjustment. The main body 23 of the hook plate 3 has a concentric to the pivot pin 11 extending slot 24, which at its end next to the tongue is a right-angled bend which is also denoted by 25 * in FIG. 1 in relation to the unfolded state. The slot 24 is at a distance arranged by the pivot pin 11 and practically at the height of the free end of the tongue 18.

The locking pin is in the slot 24 and the angled portion 25 7 movable in the direction perpendicular to FIG. 1. The locking pin 7 is plate-shaped at both ends Mounted guides 26, which are arranged on an actuating lever 4, in particular designed as a push button are. In the starting position according to FIG. 3, the actuating lever 4 lies in the upper plane of a housing opening 27. Outside the plate-shaped guides 26 trigger lugs 28 are provided on the actuating lever, which on the lower End 29 form abutments for springs 10, which abut with their other end on inwardly directed housing are supported. These springs strive to push the operating lever or push button 4 outwards or upwards and thus the locking pin 7 upwards and possibly into the bend 25 when the hook plate 3 is pivoted inward is.

On the pivot pin 11 is optionally interposed a spacer 8 a leg spring 9 as Coil spring arranged on the one hand on the hook plate 3 and on the other hand on the housing 1, 2 or with plate-shaped Guides 5 is set. This leg spring 9 aims to to push the hook plate 3 outward, i.e. into the position in which the tongue denoted 18 'in Fig. 1

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Takes position.

It can be seen that the slot 19 is exposed so that a belt loop can be inserted. A pressure on the outside Edge of the tongue 18 pivots it into the inner position, in which the extension 20 is received by the housing wall 21, the locking pin 7 then being inserted into the angled portion 25 snaps in due to the expansion of the springs 29 · This ensures that the locking mechanism is absolutely secure.

When unlocking, only the push button 4 needs to be pressed will. It is advantageous that part of the load is absorbed by the pivot pin 11. Awake entry of the locking pin 7 in the concentric slot 24-presses the leg spring 9 the hook plate to the outside, so that the belt loop loosens easily. It goes without saying that the locking pin 7 is also used to reduce friction equipped with a mounted outer roller-shaped bush can be.

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Claims (11)

DI PL.-IN GOR KR ETZSC H MAR 2 "amburg ι BEIM STHOMHAUScJ PATENTANWALT 9 9 9 Zi ^ RR RUF ottl / JH (> 7wj Firma Jn K / Stö - 4355 Nürnberger & Co. Hamburg - .; ■ · ■ 1070 lawyers' files : 4,355 claims 1. Closure device for a seat belt, preferably the three-point design for motor vehicles, with a Belt part which is arranged on one side, in particular the outside, of a seat next to it and above it is, and a second, possibly belt-like, Part with the locking device on the other side of the seat, the locking device being a having rigid, hook-shaped element, in whose slot m'.t the minimum depth of a belt width of the first belt part can be inserted and which can be locked under spring load, which triggers the opening of the slot in the closed Secures position, characterized in that the hook-shaped element can be folded out and in Hook plate (3) is pivotably mounted in a housing (1, 2), with respect to the mouthpiece of which the hook tongue (18) of the hook plate (3) is movable in such a way that it is locked in one position in the mouthpiece of the slot is folded in and locked by one-handed operation a locking arrangement can be folded out into the other position, releasing the hook slot (19) is. - 1 409885/0058 ACCOUNTS DRESDNER BANK, ACCOUNT NO. 9229371 POST CHECK HAMBURC NO. 193766-208 2. Apparatus according to claim 1, characterized in that the hook plate (3) is under the load of a spring (9) which tries to pull the hook tongue (18) out of the Unfold the mouthpiece, and that the locking arrangement (4, 7, 24, 25, 29) has at least one spring (29), which endeavors to keep the locking arrangement in the locking position. 3- Device according to one of claims 1 and 2, in which at the tongue of the hook plate is provided with an obliquely directed approach extending over the slot, characterized in that the extension (20) when the hook plate (3) is pivoted into the mouthpiece under a rigid housing cover wall (21) engages, which closes the slot in the closed state. 4-. Device according to claim 3 »characterized in that that the housing cover wall is essentially concentric to the The pivot point (11) of the hook plate (3) is formed, at least the outer side (22) of the extension (20) correspondingly is directed. 5 · Device according to one of claims 1 to 4, characterized characterized in that the hook plate (3) on its main body (23) has a curved concentric to the fulcrum Has slot (24) which at its end facing the tongue (18) has a right-angled or radial bend (25) has into which a spring-loaded and guided in the housing parallel to the pivot pin (11) of the hook plate (3) directed locking pin (7) in the pivoted Location of the hook plate can be snapped into place. 6. Apparatus according to claim 5 »characterized in that the slot (24 ·) for the locking pin (7) substantially is level with the free end of the tongue (18). 409885/0058 - * - ? 334388 7. Apparatus according to claim 5 »characterized in that that the locking pin (7) on one in the housing (1, 2) against spring force (29) guided actuating lever (4) is arranged, wherein the spring force strives to the To move locking pin (7) in one direction in the sense of snapping into the bend (25). 8. Apparatus according to claim 7, characterized in that the actuating lever is designed as a push button (4-) guided in the housing, which by means of its guide directed release lugs (28) is supported on axially loaded compression springs (29), which the Verrisglungsfedern form. 9. Apparatus according to claim 3 »characterized in that within the housing (1, 2) centrally to the central axis plate-shaped guides (26) are arranged in which the pivot pin (11) is mounted and one of these trimmed slots (17) for the locking pin (7) have, on the outside of the plate-shaped guides on the lever or push button (4-) by bearing lugs is led. 10. Device according to one of claims 1 to 8, characterized in that a second in the housing (1, 2) A rod-shaped carrier (16) forming part of the belt by means of a hammer head (6) with the plate-shaped guides (26) is connected. 11. Device according to one of claims 1 to 3 and 8, characterized in that the slot (24) after unlocking in an approximately 4-5 ° position opposite the housing opening of the mouthpiece arrives, and that the housing opening is substantially parallel to the direction of actuation of the Push button (4) is directed. 409885/0058