EP1741859B1 - Door stop for vehicles - Google Patents

Abstract

The device has a door holding rod (2), a holder housing with a through opening for the rod and a latching unit (11) in the housing. The latching unit has two pivotably mounted latch elements biased towards each other and in the direction of the door holding rod by respective spring elements. The latching elements are in contact with opposite sides of the rod and can be engaged with latching grooves (4) in the rod.

Description

The invention relates to a door lock for motor vehicles, with a door retaining bar, a holder housing with a passage opening for the door retaining bar and arranged in the holder housing latch unit, the two by a respective spring element toward each other and biased toward the door retaining bar, pivotally mounted latching rockers each having a Catching element, wherein the locking elements rest on opposite sides of the door retaining bar and can be brought into engagement with locking grooves on the door retaining bar.

From the DE 201 20 271 U ₁ , a door arrester is known in which a door retaining bar provided with detent grooves is arranged on the one hand to be pivotable on a vehicle body and, on the other hand, in the holder housing fastened to the vehicle door. When pivoting the vehicle door equipped with the locking grooves side surface of the door retaining rod slides on a rigid locking cam of the locking unit and thus locks the vehicle door in predetermined opening positions. On the latching grooves opposite, substantially flat side of the door retaining bar, this is pressed by a spring-loaded cam in the direction of the locking element.

This door lock has the disadvantage that it is imperative for the function that the locking grooves must be aligned parallel to the pivot axis of the door retaining bar with the vehicle body, since a pivotability of the door retaining rod is a prerequisite for the operation of the locking unit. This results in considerable design limitations in the design of the arrester and the associated components, namely the vehicle door and the Befcstigungsbereichs the door retaining bar to the vehicle body.

A door lock of the type mentioned is further from the DE 297 17 283 U1 known.

The latching rockers are biased by spring elements, the opposite ends of the latching rockings are supported within the housing. In order to ensure the required support and to prevent deformation as a result of the support forces, the door lock must be designed accordingly in Abstützungsbereich. However, this has significant design limitations and weight penalties result. Another, generic door arrester, in which the locking elements are biased by a torsion spring in the direction of the door support rod, is characterized by the FR 2280778 disclosed.

The invention has for its object to provide a door lock, which has a variety of design options, can be produced inexpensively and takes only a small amount of space, while a reliable locking of the vehicle door connected to the door lock is ensured.

The invention achieves the object by a door lock with features of claim 1. Advantageous developments of the invention are specified in the dependent claims.

The door lock according to the invention is characterized in that the spring elements are formed by cylindrical helical compression springs and arranged substantially parallel to the longitudinal axis of the door retaining bar.

The pivotable mounting of cooperating with the door retaining rod detent arms makes it possible to arrange the detent unit regardless of the pivot axis of the door retaining bar with the vehicle body in any manner in the holder housing. It is possible to arrange the latching rockers so that their pivot axes are parallel to the pivot axis of the door retaining bar with the vehicle body. On the other hand, the latching rockers can also be arranged such that their pivot axes are perpendicular to the pivot axis of the door retaining bar with the vehicle body. It is essential that the locking elements cooperating with the locking grooves are movable relative to the door retaining bar, so that a relative movement of the door retaining bar against the locking elements for the function of the door arrester is not required.

The inventive design of the door arrester thus has a high degree of freedom in the adaptation to the respective vehicles and makes it possible to minimize the required space.

To minimize the space also contributes to the use of the two separate spring elements, each biasing a locking rocker in the direction of the door retaining bar. Thus, a complicated and space-consuming construction, in which both latching rockers are loaded by a single spring element, can be dispensed with.

Another advantage of the embodiment according to the invention is that - if the pivot axes of the latching arms are perpendicular to the pivot axis of the support rod with the vehicle body - the door retaining rod is secured in its position formed by a plane perpendicular to the pivot axis of the door retaining bar to the vehicle body, so that if necessary bearing damaging movements are reliably avoided.

The arrangement of the springs according to the invention makes it possible to design the door lock particularly small, with the space required for receiving the locking rock space is sufficient to arrange suitable spring elements. In addition, the arrangement of the spring elements which is essentially parallel to the door rod has the advantage that the ends of the spring elements opposite the latching elements are supported in a region of a housing of the door arrester which coincides with the region which, in the installation position of the door arrester, lies behind the sheet metal, For example, door panel, rests. This makes it possible to form the housing less strong than in a known from the prior art, made perpendicular to the door retaining rod arrangement of the springs, because behind, for example, the door panel is located. The springs lie in the effective direction of a stable screwing of housing and door panel. The door lock can be produced with a particularly low weight, inexpensive and small.

The spring elements can basically be configured as desired. According to an advantageous embodiment of the invention, however, the spring force of the spring elements is adjustable. This can be done for example by an adjusting screw which can be screwed into the holder housing and on which the spring element is supported.

The adjustability of the spring force makes it possible to compensate for possibly occurring material fatigue of the spring, so that any necessary replacement of parts of the Door arrester or the entire door arrester can be omitted.

The arrangement, orientation and design of the locking grooves on the door retaining bar is basically freely selectable. In addition to a usually parallel to a pivot axis of the door arrangement, in cross-section usually symmetrical locking grooves, it is also possible to arrange the locking grooves perpendicular or at any angle to the pivot axis. The individual latching marks can be configured identically or in a particularly advantageous embodiment of the invention deviating from each other, so that in each case different operating forces are required to pivot the door. According to this development, the adaptation possibilities of the door arrester according to the invention are increased in a complementary manner.

According to an advantageous embodiment of the invention, one or more locking grooves have an asymmetrical cross-section. This embodiment extends the design possibility of the door arrester in a complementary manner, the asymmetric shape allows the determination of different forces for opening and closing the door from the respective locking positions out.

The advantageous embodiments of the locking grooves make it possible in a special way to adapt the door lock according to the invention to a wide variety of design specifications.

According to a particularly advantageous embodiment of the invention, the locking elements at least partially a circular cross-section and the locking grooves on a corresponding arcuate course. This embodiment of the invention ensures a reliable locking of the vehicle door in the predetermined by the arrangement of the locking grooves opening positions of a vehicle door connected to the door lock. At the same time, this configuration allows that the respective locking positions can be left without a disproportionately high force, which can be structurally determined on the expression of the locking grooves of the respective force and adapted to the respective vehicle.

Particularly advantageously, the locking elements are integral with the latching rockers educated. As a result, the number of required components for the door lock and thus the cost of production can be reduced in a complementary manner. Alternatively, the latching element is formed according to a further embodiment of the invention by a rotatably arranged on the latching rocker roller. This embodiment increases the reliability and comfort in the operation of the door arrester in a complementary manner.

In principle, any materials which fulfill the required strength properties can be used to produce the door stop. According to an advantageous embodiment of the invention, however, the latching rockers and / or the latching elements are formed from a plastic with good sliding properties. The use of a suitable plastic makes it possible to reduce the weight in a complementary manner against Türfeslsteller made of metallic materials. The formed of plastic with good sliding properties locking elements and / or locking rockers ensure that the signs of wear do not affect the operation of the door arrester.

For additional weight reduction according to a further embodiment of the invention, the door retaining rod is formed of a plastic-coated metal rod and the holder housing made of fiber-reinforced, advantageously glass fiber reinforced plastic. This combination is characterized by its high strength and low weight. Due to the advantageously provided plastic coating of the metal rod can be dispensed with in the selection of the material of the door retaining rod to the attention of the coefficients of friction of the metal.

The arrangement of the locking grooves and their number on the door retaining rod determined by the locking positions to be provided and can basically be chosen arbitrarily. In the case of a vertically opposite arrangement of the locking grooves on the door retaining rod, a particularly high cogging torque is achieved even at low spring forces, so that the selected spring elements can be made particularly small.

Alternatively, however, it is possible to arrange the locking grooves on the opposite sides of the door retaining bar, that the oppositely arranged locking elements engage alternately with the locking grooves in engagement. This development of the invention makes it possible to increase the number of locking positions in the swivel angle range of the vehicle door. Possibly occurring instabilities of the detent can be counteracted by stronger spring elements or another embodiment of the locking grooves.

According to the invention, cylindrical helical compression springs are used as spring elements. These are characterized by their high reliability and low cost.

According to a particularly advantageous embodiment of the invention, the door retaining rod is formed on the one hand for articulated attachment to a vehicle body and on the other hand, it has a stop body, wherein on a side facing the holder housing of the stopper body, a damping element is arranged. This embodiment of the invention increases the comfort of the door arrester in a complementary manner, wherein upon reaching the end stop, i. when reaching the maximum opening angle of the door, the opening movement is damped and the door does not move hard into the end stop.

Fig. 1

eine perspektivische Ansicht einer ersten Ausführungsform eines Türfeststellers;

Fig. 2

eine perspektivische Darstellung des Türfeststellers von Fig. 1, teilweise im Schnitt;

Fig. 3

eine perspektivische Darstellung des Feststellers von Fig. 1 ohne Haltergehäuse;

Fig. 4

eine Schnittansicht des Haltergehäuses des Feststellers von Fig. 1;

Fig. 5

eine perspektivische Ansicht einer zweite Ausführungsform eines Türfeststellers;

Fig. 6

eine perspektivische Darstellung des Türfeststellers von Fig. 5, teilweise im Schnitt;

Fig. 7

eine perspektivische Darstellung des Türfeststellers von Fig. 5 ohne Haltergehäuse und

Fig. 8

eine Schnittansicht des Haltergehäuses des Türfeststellers von Fig. 5.

Hereinafter, embodiments of the invention will be explained with reference to the drawings. In the drawings show:

Fig. 1

a perspective view of a first embodiment of a door arrester;

Fig. 2

a perspective view of the door arrester of Fig. 1 , partly in section;

Fig. 3

a perspective view of the arrester of Fig. 1 without holder housing;

Fig. 4

a sectional view of the holder housing of the arrester of Fig. 1 ;

Fig. 5

a perspective view of a second embodiment of a door arrester;

Fig. 6

a perspective view of the door arrester of Fig. 5 , partly in section;

Fig. 7

a perspective view of the door arrester of Fig. 5 without holder housing and

Fig. 8

a sectional view of the holder housing of the door arrester of Fig. 5 ,

Fig. 1 1 shows a first embodiment of a door arrester 1 which is predominantly produced using plastics.

A door retaining bar 2 of the door arrester 1, which is formed from a plastic-coated metal bar, is pivotally connected on the one hand to a column console 7 via a bolt 9. About the column bracket 7, which has an opening 8 for receiving a fastening screw, not shown here, the door retaining rod 2 is pivotally mounted on a vehicle body, not shown fastened here. The door retaining bar 2 is arranged in a passage opening 13 of a holder housing 3 which can be fixed to a vehicle door, likewise not shown here. In the case of a pivoting of the vehicle door relative to the vehicle body, the fixed to the vehicle door holder housing 3 is relatively displaced relative to the door retaining bar 2, wherein defining a maximum opening angle of the vehicle door, the door retaining bar 2 at its end facing the vehicle door has a stop body 5, which at his the Holder housing 3 facing side for damping the end stop has a damping body 6.

The door retaining bar 2 has at its, in the installed position a top and bottom surfaces forming locking grooves 4, which cooperate with locking elements 14 of a arranged in the holder housing 3 latching unit 11 (see. Fig. 2-4 ).

The locking unit 11 is formed by two pivotally mounted in the holder housing 3 and loaded by compression coil springs 12 locking rockers 10, which have in their contact area with the door retaining bar semicircular locking elements 14 which are formed korrespondicrend to the locking grooves 4.

The latching rockers 10 are mounted on hinge pins 15 fastened in the holding housing 3, which extend perpendicularly to the pivot axis of the vehicle door predetermined by the hinge pin 9. The helical compression springs 12 are supported on the one hand on a contact surface 17 of the latching rocker 10 and on the other hand on a screwed into the holder housing 3 and the spring force setting screw 16 and tension the locking rockers 10 in the direction of the upper and lower sides of the door holding rod 2.

In the fixed by the arrangement of the locking grooves 4 opening positions of the vehicle door engage the locking elements 14 in the locking grooves 4 and lock the vehicle door. The door retaining bar 2 is formed of a plastic-coated metal bar, the Holder housing 3 is formed from glass fiber reinforced plastic.

Another embodiment of a door arrester 1 'is in the FIGS. 5 to 8 shown. The components of the door arrester i 'shown there are made of steel.

The operation of the door arrester l'corresponds to the operation of the in the Figures 1-4 In addition to the use of steel instead of plastic, the door lock 1 'in contrast to the door lock 1 on the latching rockers 10 fixed rollers 18 which are rotatably mounted in the holder housing 3' bearing pin 19 is mounted. The radius of the roller 18, preferably made of plastic, essentially has an arc-shaped course corresponding to the latching grooves 4.

Claims (11)

1. Door-stopping device for motor vehicles, including

   - a door holder bar

   - a support housing including a passage for the door holder bar to pass through and

   - a locking unit disposed in the support housing, which

   - includes two pivotally mounted locking levers, each pre-tensioned by a spring element towards each other and towards the door holder bar, each locking lever comprising a locking element, the locking elements bearing on mutually opposite sides against the door holder bar and being adapted to engage with the locking grooves on the door holder bar,

   characterised in that the spring elements are formed by cylindrical coil compression springs (12) and are arranged substantially parallel to the longitudinal axis of the door holder bar (2).
2. Door-stopping device according to claim 1, characterised in that an elastic force applied by the spring elements (12) is adjustable.
3. Door-stopping device according to claim 1 or 2, characterised in that one or more locking grooves (4) present an asymmetrical cross-section.
4. Door-stopping device according to any one of the preceding claims, characterised in that the locking grooves (4) have different cross-sections.
5. Door-stopping device according to any one of the preceding claims, characterised in that the locking elements (14) present a circular cross-section, at least in portions thereof, and that the locking grooves (4) present a correspondingly arcuate shape.
6. Door-stopping device according to any one of the preceding claims, characterised in that the locking elements (14) form an integral part of the locking levers (10).
7. Door-stopping device according to any one of the preceding claims, characterised in that the locking element is formed by a roll (18) provided rotatably on the locking lever (10).
8. Door-stopping device according to any one of the preceding claims, characterised in that the locking levers (10) and/or the locking elements (14) are made of plastics having good sliding properties.
9. Door-stopping device according to any one of the preceding claims, characterised in that the door holder bar (2) is formed by a metal bar coated with plastics and the support housing (3) is made of fibre-reinforced plastics.
10. Door-stopping device according to any one of the preceding claims, characterised in that the locking grooves (4) are so arranged on mutually opposite sides of the door holder bar (2) that the locking elements (14), arranged opposite, engage alternatingly with the locking grooves (4).
11. Door-stopping device according to any one of the preceding claims, characterised in that the door holder bar (2) is designed, on the one hand, for articulated fitting to a vehicle body and, on the other hand, comprises a stopping member (5), a damping element (6) being provided on a side of the stopping member (5) facing the support housing (3).

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