JPS6036005A - Buckle of safety belt - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a buckle housing and a spring-loaded protrusion insertable into an opening of the buckle housing and restrained by at least one restraint in the housing. The present invention relates to a buckle for a safety belt for a six-wheel transport means, in which a protruding piece closes an insertion opening when the buckle tongue piece is not inserted.

BACKGROUND OF THE INVENTION A bell 1 to buckle of the type mentioned at the outset is known from DE 30 21 796 A1. Closing the insertion opening of the buckle tongue with a suitably sized protruding piece serves to prevent the ingress of dirt particles which would promote abrasion of the movable parts of the buckle. Known buckles are designed to prevent the insertion of external parts such as screwdrivers, coins, etc. into the opening of the buckle tongue, which may cause malfunction or even destruction of the entire buckle. Can not.

For this reason, the object is to provide a buckle for a safety belt that reliably prevents the intrusion of foreign objects and prevents improper operation of the buckle without damaging the buckle.

European Patent No. 23]22 proposes a buckle acid 4 which prevents an outsider from breaking the buckle by invading the interior of the buckle with a screwdriver through the inlet opening of the buckle. For this purpose, the protruding piece has a notch in its free end that is in contact with the buckle tongue, which cutout allows the restraining member to remain on the side of the protruding piece after ejecting the buckle tongue, and to The corner is configured to overhang the notch and project into the notch, and the sides of the projecting piece have a stop near the corner of the restraining member that engages and projects into the restraining member. Inward movement of the buckle tongue is prevented, and when the head of the buckle tongue is inserted into the notch of the protruding piece, it engages the projecting corner of the restraint member and in doing so releases the restraint member from the stopper. to allow insertion of the protruding piece a fdJ. In the case of this known device, the projecting piece is therefore restrained by the restraining member in the retracted position inside the buckle housing. However, this type of structural configuration inevitably creates a void between the introduction opening of the buckle tongue and the notch of the protrusion, into which foreign objects may still be trapped.
For example, coins may be inserted or inserted;
These foreign objects are forced into the interior of the buckle housing during insertion of the buckle tongue and here impede good engagement of the buckle tongue. Furthermore, in this space,
As in the case of belt buckles of the known design mentioned at the outset, contaminants, for example in the form of dust particles or cigarette ashes, are susceptible to contamination, which impairs the function of the bell buckle.

OBJECTS OF THE INVENTION An object of the present invention is to provide a buckle for a safety belt for a means of transportation, particularly an automatic tjt, which can reliably prevent foreign objects and dirt from entering the buckle and improper buckle operation. be.

The solution according to the invention to this object, including advantageous configurations and developments, emerges from the claims preceding this specification.

Various advantages are associated with the invention. The protruding piece is
When the buckle tongue is released, it is retained for the buckle snowflake in the area υfl of the inlet opening of the buckle housing, and in an advantageous embodiment of the invention, the buckle tongue is held in place when the buckle tongue is pushed in. Pressing against the restraining element forces it outwards with a lateral force, thereby releasing it, and it can only be released again by the buckle tongue itself.

The restraint itself is particularly reliable if the restraint is constructed as a spring element with an engaging projection and an engaging recess. However, if an even greater degree of reliability is to be achieved, in an advantageous embodiment of the invention the arresting part is additionally supported by a pressure element, which press element presses the arresting part in the insertion direction or in the ejection direction. Add a force component that extends at right angles.

Furthermore, since the restraint device reliably holds the protruding piece even when the buckle tongue piece is released from restraint, rattling is prevented.

Another advantage of the invention is that the arresting device simultaneously closes the plug-in opening laterally, so that additional protection against the ingress of dirt particles is obtained.

Embodiments The drawings show simplified embodiments of the present invention.
It is explained below.

In FIG. 1, a belt buckle 't'Js is shown, for example, configured as a button buckle.

This bell 1-buckle has a so-called two-plate housing 10 with a track 11 for the buckle tongue 12 extending between the two plates. This buckle tongue has a notch 13 in which a restraining member 14 arranged at right angles to the buckle housing plate 10 and the buckle tongue 12 can engage and fasten the belt buckle. . In order to disengage the restraining part JJ'14 and thus to release the buckle, a push button 15 is used, on which forked projections 16 are integrally formed, these projections It engages with the restraining member 14.

The compression spring 17 loads the restraining member 14 from above, so that this restraining member remains permanently in the restraining position. Instead of the swingable push button 15, a sliding button (not shown) can also be provided.

The track 1j of the buckle tongue 12 opens outwards on the one hand, where the buckle tongue 12 has a funnel-shaped opening 1.
8, and on the other side, the orbit It is a restraining unit 20
It is closed by a plate-like connection 81S 19. A stud 21 is used to connect the buckle housing 10 with the connecting piece 19. A projecting piece 22 is supported in a vertically movable manner in the central region of the track II, and this projecting piece is supported by two lateral projecting piece springs 23,
These protruding pieces in turn push the protruding piece 22 in the direction of the insertion opening 18 for the buckle tongue piece 12. When the buckle tongue piece 12 is inserted, the buckle tongue piece and the protruding piece 22 are in contact with each other.

The buckle housing 10, constructed from two plates, which absorbs the main belt forces and introduces them into the vehicle via the arresting part J'A' 20, is advantageously made of a suitably shaped housing, preferably made of plastic. By the caps, namely the upper cap 24 and the lower cap 25
covered on the outside by These caps leave an interlocking opening 18 open by a supplemented formation, making it possible to grasp the pushbutton 15. The mutual centering of these gaps is preferably effected by pins and corresponding pins.

Furthermore, a connecting screw (not shown) is provided. The inner surfaces of the "covering" caps 24, 25 are formed with contoured cross-sections to perform various functions, for example the lower cap 25 has upright ribs for positioning and retaining the housing IO.

On the open side in the region of the insertion opening 18 of the buckle tongue 12, a restraint device i'near 55 configured as an engagement device
Are these restraint devices provided? This will be explained in detail below with reference to FIGS. 52 to 5.

In the embodiment of the invention shown here, part of the engagement device consists of a spring element 30, 31, which spring element is manufactured, for example, from elastic plastic and is generally S-shaped. The bending thickness of this strip varies depending on the average load during use of the bell 1 to buckle.An extension may be provided at the end of the S-shape. The spring elements 30, 31 are independent component parts, and these extensions in particular perform a fixing and supporting function.The two opposing arcs of the S-shape provide a several-fold spring action.The spring elements 30, 31 are independent component phases , this component is fitted into the lower cap 25 during assembly of the buckle, which lower cap has a suitably modified cross-section for this purpose, and the part forming the original restraining part 60 is swingable. In the embodiment shown, the restraining part 60 can be pivoted via an outer arm 67 about a pivot point 68 provided in the outer region of the buckle tongue or can be moved towards or away from the buckle tongue. You can press 4=J.

The arrangement of the spring elements 30, 3 during assembly is limited to the restraint part 6.
In the zero restraint position, that is, in the position where the buckle tongue piece 12 is not pulled in, the inner surface 60b of the restraint part 60 is positioned almost parallel to the side surface 25a of the housing cap 25, and the restraint part is This is done so that the inner surface 60g protrudes into the track 11 of the protruding piece 22.

The restraint section 60 is configured as follows. This restraining part has, on the surface 60a closer to the projecting piece 22, approximately centrally, a partial cutout 62 extending perpendicularly to the buckle housing plate IO. A cutout 62 forming an engagement recess is constituted by a suitably inclined shape of the side surface 64 facing the free end of the restraining part 60;
This recess has a wider width in the region of the surface 60a than at the bottom. At the same time, the surface 64 is connected to the restraining portion 6
This forms one surface of the engagement protrusion 61 that continues to the free end of o. The opposite surface of the engaging protrusion 61 is formed by a surface extending outward from the inner surface 60a, and this surface also has the function of the riding slope surface 63. Landing slope 63
The surface extends perpendicularly to the buckle housing plate 10, but at the end of the restraint 81t6o on the opposite side from the riding slope surface 63, this restraint part is chamfered 65, and this chamfer is as follows. serves as a raised slope for the buckle tongue 12, as described in .

In addition to the spring element 30 . 31 and the specially designed restraint 60 of this spring element, the shape of the protruding piece 22 is also specifically adapted to the shape of the restraint 60 . The protruding piece 22 has a notch 71 on the side at the free end closer to the buckle tongue piece 12, and the partition surface 7 closer to the free end has a notch 71 on the side.
2 is formed obliquely, the width of the cutout 72 at the side surface 22a of the protruding piece 22 is 4\ wider than at the bottom of the cutout.

The depth of the cutout 62 that matches the height of the engagement protrusion 61 also almost matches the depth of the cutout 71 on the protruding piece 22.

The protruding piece 22 has a concave curvature at its free end, and this curvature corresponds to the protruding curvature of the insertion front part of the buckle tongue piece 12. Corner ranges 22c, 22 of the four sides 22e
d is chamfered.

The manner in which the illustrated restraint system operates is as follows.

When the buckle tongue 12 is retracted, the outer surface 60a of each restraint part 60 of the spring element 30.31 is at least partially in contact with the outer surface +2a of the buckle tongue I2 (the fifth
figure). The restraint 60 cannot perform a restraint function in this position, but it now springs 30.
The spring action of 31 generates a force component on the buckle tongue 12 that extends perpendicularly to the insertion or ejection direction, so that the buckle tongue is held laterally and rattling of the buckle tongue is avoided. be done. In this case, it is particularly advantageous if, as shown in the drawing, the inlet opening is provided with restraints @ 55 on both sides, so that, as will be explained, the A uniform force distribution and a particularly secure restraint of the piece 22 can be achieved.

After releasing the restraint of the buckle tongue piece 12 by the restraining part 14 through the push button of the belt buckle, the protruding piece 2
2 is pushed in the direction of the inlet opening 18 via the lateral protruding tabs 23 which, while pushing the buckle tabs 12, push them out of the housing of the belt buckle. As soon as the corner areas 22c, 22d of the protruding piece 22 come forward from the track 11 cut out by the buckle housing ramp 10, these corner areas touch the spring element 30. , 31 restraint part 60
The spring element 30.3 rides on the slope 63 of the spring element 30.3.
The restraining portion 60 is pushed outward by the spring action of the protruding piece spring 23, which is stronger than the spring 23.

As a result, the protruding pieces 22 are further pushed out, and each restraining part 60 is configured such that after the corner ranges 22c and 22d of the protruding pieces 22 have passed over the engaging protrusions 61, the engaging protrusions are connected to the spring elements 30.
．． 31 engages with the notch 7j by the spring action. At the same time, the recess 62 engages around the corner areas 22c, 22d of the protruding piece 22, so that a double engagement and thus a positive locking is achieved by the locking action of the inclined surfaces 64,72.

The buckle tongue piece 12 is caused to escape from the buckle housing by the kinetic energy applied from the protrusion piece 22.

By restraining the protruding piece 22, it is almost impossible for this protruding piece to be forced back into the buckle housing by a foreign object. Because the engagement protrusion 61
The surface 64 is the corner range 22c, 22d of the protruding piece 22.
This is because it forms a reliable stopper.

By firmly restraining the protruding piece 22, it is no longer possible to manipulate the inside of the buckle by twisting or twisting, so that coins or other foreign objects can no longer be introduced into the interior of the buckle.

Rather, release of the restraining device is possible only by the buckle tongue 12 itself or, purely theoretically, by a structure of the same shape.

When the buckle tongue 12 is reintroduced into the buckle housing, the corner area of one rib of the buckle tongue first hits the upper slanted surface 65 of the restraining part 60 and pushes this restraining part outward. As a result, the engaging protrusion 61 is simultaneously pulled out by the external force, so that the restraining device is released from the restraint by the protruding piece 22 (FIG. 4), and when the buckle tongue piece 12 is further pushed in, the protruding piece 22 returns to the pulled back position. J11 is attached, and the restraining portion 14 engages and secures the buckle tongue 12 within the buckle housing 10.

It is not possible to unrestrain the restraint device by other foreign objects such as coins or the like. Because these foreign objects are usually
This is because the front end of the buckle tongue piece does not have the shape necessary to push out the restraining part 60 and thereby expose the protruding piece 22. Furthermore, the present invention has the advantage that when the buckles are tied together in front of a station, the restraining device acts like a sealing piece under lateral force, so that dirt particles such as leftover ash cannot penetrate into the inside of the buckle. have.

In addition to the illustrated embodiment, a number of other possibilities arise with which the locking of the projecting piece 22 can be ensured. For example, the restraint 60 can be pivotally attached to the buckle housing plate 10 via an arm, provided that at least this arm has sufficient spring properties. Other embodiments are described in the claims.

In the embodiment according to claim 10, in which a ball is provided as the restraining element, the restraint 60 preferably additionally exerts a force component perpendicular to the insertion or ejection direction of the buckle tongue 12. Since it is equipped with a pressing ligament, this restraint device cannot be released even in the case of large force effects, or can only be released by means of the buckle tabs 12.

If a splashing element 30,31 with a sufficient splashing effect is used, a supporting pressure lily is usually not necessary in the embodiments shown in FIGS. 2 to 5. However, it may be the case that the spring action of the spring element 30, 31 and thus the pressing force of the restraining part 60 is not sufficient to ensure a reliable engagement of the protruding piece 22 into the notch. Necessary for cost reasons. In such a case, even in such an embodiment, the restraining portion 60 is pressed and the purple sweet potato 6 is pressed.
6. Additional support can be provided, for example by compression springs (indicated in dotted lines in FIG. 3).

The illustrated embodiment applies an increased pressure to the f1 beveled edge 34 of the buckling tongue 12 through the springing action of the arm 67.
The buckle tongue 12 is held more securely and a rattling of the buckle tongue in the buckle housing in the engaged position is completely prevented.

The features of the subject matter disclosed in the above description, in the claims and in the drawings are of importance for the realization of the invention in the various embodiments independently and in any combination.

[Brief explanation of the drawing]

Fig. 1 is an exploded view of the belt buckle of an automobile safety belt, Fig. 2 is a plan view of the belt buckle with the second housing lid open, Fig. 3 is a plan view of the restraint device in the engaged position, FIG. 4 is a plan view of the restraint device being pushed up by the buckle tongue, and FIG. 5 is a plan view of the restraint device in the restraint release position. lO... Buckle housing, 12... Buckle tongue piece, 18... Insertion opening, 22... Projection piece,
55...Restraint device 1γt Fig. 3 Fig. 4

Claims (1)

[Scope of Claims] 1. A buckle housing, and at least one buckle insertable into the opening of the buckle housing and within the housing.
A means of transportation for people, which has a buckle tongue piece that is restrained by one restraining part and is acted upon by a protruding piece subjected to a spring load, and which closes the insertion opening when the three protruding single-edged buckle tongue pieces are not inserted. In the buckle of a safety belt used for A buckle for a safety belt, characterized in that at least one restraining device (55) is provided for holding the piece (22) in a re-released position. 2. Buckle according to claim 1, characterized in that the buckle tongue (12) is a means for re-releasing the projecting piece (22). 3. characterized in that the restraining device (55) comprises a spring element (30, 31), which spring element projects into the movement track (11) of the protruding piece (22) in order to hold it; A buckle according to claim 1 or 2. 4. Buckle according to one of claims 1 to 3, characterized in that the spring element (30, 31) is arranged as an independent component inside the belt buckle. 5. The spring element (30, 31) has a substantially S-shaped strip shape, and the portion (60) forming the restraining portion has a notch (62) forming an engagement recess and a portion following this notch. and a raised inclined surface (63), thereby forming a retaining protrusion (61) located in the middle thereof and forming an engaging protrusion, and a portion (
60) on the opposite side to the climbing slope (63) is configured with a second lifting slope (65) with an opposite slope, and the protruding piece (22) According to one of claims 1 to 4, the vertical sides (22a, 22b) have a notch (71) for fitting the retaining protrusion (61). 6. The buckle according to claim 5, characterized in that the thickness of the notch (71) of the protruding piece (22) substantially matches the height of the engaging protrusion (61). 7 The retaining protrusion (6]) fits into the notch (22) of the protruding piece (22).
Claim 5, characterized in that it engages with 71).
or the buckle described in paragraph 6. 8. Claim 1, characterized in that the protruding piece (22) is chamfered in the corner area (22c, 22d) of the surface (22e) in contact with the buckle tongue piece (12). or a buckle attached to one of item 7. 9. Nomatsucle according to one of the claims 1 to 3, characterized in that the restraining device (55) is pivotally connected to the buckle housing (10). 10 The restraint device (55) is provided with a ball, and this ball partially protrudes from the side (60a) closer to the protrusion piece (22), and the protrusion piece (22) has both vertical sides (22a,
22b) on at least one vertical side of the spherical surface (60a
) Patent ``Claims 1 to 4 and 8, characterized in that it has a substantially semicircular bulge roughly matching the shape of a sphere for fitting the more protruding part.
A buckle as described in one of the items. 11. Claim 10, characterized in that the restraining part (60) has, at its end facing the insertion opening (18), a ramp-up surface extending towards the outer surface of the buckle housing (io) Buckle as stated. 2. Claims characterized in that the portion of the spring element (30, 31) forming the restraining portion (6o) is supported by a pressing purple sweet potato (66) that acts in the direction of the protruding piece (22). Buckle according to one of paragraphs 1 to 11. 13 The buckle described in claim f5+2m, characterized in that the pressed purple sweet potato (66) is a spring. 14. Buckle according to one of claims 1 to 13, characterized in that the restraining device (55) is made of plastic. 15. One of claims 1 to 13, characterized in that the restraint device (55) is made of metal.
buckle as described.