JP2002510764A - Motor vehicle door stop - Google Patents

Abstract

The invention relates to a door stop for a motor vehicle, which always includes a first part acting on a door assembly part, a door or a door post, and a second part acting on another door assembly part. . The door stop also includes at least one brake and retainer disposed between both parts and spring-loaded by at least one spring (4). One of the two parts is formed by a component movable with respect to the other part and is arranged in a manner corresponding to the intended holding position of the door. In addition, said component is provided with a braking ramp or catching notch (8) which interacts with a spring-loaded braking or holding body. In order to prevent the door stop from making noise after prolonged use, the invention provides for a surface hardening of the spring (4) which interacts with the brake and the retainer, at least in the area where it contacts the brake or the retainer. Provide.

Description

DETAILED DESCRIPTION OF THE INVENTION

The present invention relates to a first door assembly part, a door or a first pillar which can be attached to a door post.
And a second part that can be attached to the other door assembly part,
At least one brake carrier, which is spring-loaded by at least one spring, is arranged between the two parts, one of the two parts being formed from a component movable with respect to the other and The invention relates to a door stop for a motor vehicle, provided with brake ramps or latch marks arranged in accordance with the door holding position to be operated and interacting with a spring-loaded brake holder.

[0002] Although door stops for motor vehicles of this type are known by many designs, over time two main designs have evolved, one of which passes through a holder housing containing a spring-loaded braking support and It is characterized by a door retaining rod provided with a thickened part or similar projection forming a braking ramp or a latch mark, the other being indirectly or directly with a latch segment having a recess or protrusion forming a latch mark. And a torsion bar spring forming a damping or holding body. Despite the very different forms of evolution, a feature common to both types described above is that during the intended operation, the deformation of the load spring due to the interaction of the brake body with the brake ramp or the latch mark causes certain deformations. A slight movement, depending on the type, may inevitably result in a relative movement between the brake carrier and the load spring acting thereon. If the door stop is operated for a certain period of time, such relative movement between the load spring and the brake support may cause at least one of the two related components to wear and / or damage the load spring and / or the brake support. Wear phenomena, which naturally lead to changes in the surface, in particular including increases in surface roughness. The increased roughness of the surfaces that can move relative to each other firstly has the consequence that noise is generated during the relative movement of the two parts. In addition, the increased surface roughness of the two parts that can move relative to each other increases the force required to cause the two parts to move relative to each other, and consequently the surface roughness. Relative movement will not occur unless some force is increased, essentially relying on incremental increases. In the case of a door stop, the relative movement between the spring and the brake holder suddenly starts once the adjustment stroke of the brake holder itself provided as a brake passage is exhausted by this phenomenon. Therefore, the door stops produce a very unpleasant or very undesirable noise.

[0003] A similar problem arises especially in the case of a torsion bar door stop. That is,
In those door stops, a torsion bar spring having an S or C-shaped design and forming a load spring is fixed via its shaft part in a grooved recess in the hinge plate of one hinge wing, It is inevitable that the shaft portion of the bar spring will move relative to the bearing surface facing in the groove. Both of the aforementioned door stop issues per se have been known for some time, and in the past, depending on the type of door stop, some use bearing shells or bearing bushings and some use maintenance-free bearing materials. It has been or has been attempted in a relatively complex manner, such as by applying a resulting coating. When using bearing bushings or bearing shells, additional components must be produced and fitted, and applying a coating made of maintenance-free bearing material to individual components can be very costly. ,
The use of bearing bushings or bearing shells and the special application of sliding bearing coatings are relatively difficult.

[0004] The present invention therefore develops a motor vehicle door stop of the type mentioned at the outset, while retaining its basic design features, while using a bearing shell or bearing bushing and maintenance-free bearing material. The disadvantages associated with avoiding the costs associated with the use of a coating made of the same, but on the other hand the roughness of the surfaces, in particular of the load spring and the carrier, which interact in a sliding manner with each other, increases as the operating time increases. Based on the goal of eliminating

According to the invention, this object is essentially achieved by surface hardening at least the area of the spring that interacts with the brake carrier, where it contacts the brake carrier. With the aid of this measure, which does not require additional components and thus naturally no additional expense for installation, first of all, during the normal life of the vehicle and the door stop, the connection between the brake carrier and the load spring Any wear occurring in the contact surface area between them is completely prevented or kept to a minimum, so that the roughness of the two surfaces interacting in a sliding manner with each other is not likely to be increased harmfully. A particular advantage of the measure according to the invention is that it can be used with the same effect independently of any particular type of door stop, such as a torsion bar door stop or a brake / door retaining rod door stop. Yes, and the advantage is that it can eliminate what could be an additional noise source. By using the measure according to the invention in a very specific design, the roughness of the surface areas of the load spring and its support that can be in frictional contact with each other can be prevented from increasing. In principle, the invention consists in measures to prevent the wear of the surface of the surface area where the load spring interacts with the brake carrier, but its main use is to use the load spring in contact with the brake carrier. It is not limited to use only in the area. A more general aspect of the measure according to the invention is that it is used in principle for all types of door stops based on the interaction of a brake holder with a door holding rod provided with braking and holding ramps. It lies further in the fact that you can do it.

In a preferred form of realization of the invention, the spring interacting with the brake carrier comprises:
The surface is hardened to a limited extent both in the area in contact with the brake carrier and in the area in which it contacts the securing or gripping means. As a result, in addition to the advantages already obtained purely from the minimal embodiment according to the main claim, there are also the additional advantages of eliminating further noise sources arising from the fact that the surface roughness can vary.

[0007] In an advantageous design of a typical torsion bar spring door stop in structural combination with a door hinge, first a latch segment in which a first portion attached to one of the door assembly portions includes a latch mark And a second part attached to the other door assembly part is formed by a torsion bar spring, and the brake retainer is formed by a roller mounted on a free load arm of the torsion bar spring, the load of the torsion bar spring being The arm is case hardened over its length forming a roller bearing device.

In a convenient individual refinement of the torsion bar spring door stop constructed in this manner and structurally associated with the door hinge, the torsion bar spring further has an S or C-shaped design and its shaft End portion of the free-load arm, which may be mounted via a portion in a grooved recess in the hinge plate of one hinge wing and supported via its support arm against the hinge plate of one hinge wing. Is provided with a roller bearing device forming a braking support.

During the operation of a door stop in which the torsion bar spring is provided as a load spring, an S or C-shaped torsion bar spring is provided, so that the torsion bar spring can be twisted in its gripping or fixing means. In a corresponding development of the torsion bar spring door stop, the shaft of an S- or C-shaped torsion bar spring fixed in part of its length in a groove of a hinge plate of one hinge wing. The portion may be case hardened over a length portion that engages the groove, at least over a region of its periphery that engages the groove of the hinge plate.

[0010] For a modification and a simplified improvement, in particular of a torsion bar door stop structurally combined with a door hinge, via its shaft part into a groove-like recess in the hinge plate of one hinge wing. It is further the principle that the free-loading arms of the mounted S- or C-shaped torsion bar spring form a brake carrier over a length of its end region, in which surface hardening is provided over part of its circumference. Appropriate.

The details of the invention are described below by way of example with reference to the example implementations illustrated in the drawings.

The torsion bar door stop, structurally associated with a door hinge, particularly for a removable motor vehicle door illustrated in the figures, comprises two hinges hingedly connected to each other by means of a hinge pin 1. A hinge having wings 2 and 3, one of the hinge wings may be permanently fixed to a door body (not shown) and the other 3 may be removably fixed to a door post (not shown); Further, a torsion bar door stop 4 is also included. In the exemplary embodiment shown here, the hinge wings 3, which can be detachably fixed to a door post, are formed from a sheet metal blank blank bent into a U-shape and are U-shaped transverse to the hinge axis. The upper leg 5 is formed with a latch segment 8 of the door stop 4, which segment is formed by alternating projections 6 and depressions 7 and is U-shaped lower which is transverse to the hinge axis. The leg 9 has a stud-shaped projection parallel to the extension 10 of the hinge pin 1 and oriented in the same direction, this extension projecting beyond the height of the hinge. The hinge wing 2 has a substantially L-shaped cross-section and is arranged in engagement with the hinge wing 3, one of its profiled legs being rotatably connected to the hinge wing 3 via the hinge pin 1 and the other. Is fixed to the door via the profiled legs 13 of the above.

In the embodiment shown here, the torsion bar door stop 4 structurally connected to the hinge has an S-shaped torsion bar spring which locks via its shaft portion 14. Groove 19 in hinge wing plate of hinge wing 2
Which is supported on the hinge wing via a support arm 16, the area forming the load arm 17 protruding above the two hinge wings 2 and 3. The load arm 17 of the torsion bar spring interacts with the latch segment 8 of the door spring 4. This segment is formed on one leg 5 of the U-shape of the hinge wing 3, which is formed by alternating protrusions 6 and depressions 7, in the embodiment shown here three latching positions for the door. including. 2, the load arm 17 of the torsion bar spring has a surface hardening 18 over a length that interacts with the latch segment 8. In particular, as shown in detail from the illustration of FIG. FIG.
As further shown in the example of FIG. 1, the shaft portion 14 of the torsion bar spring also has a part of its circumference, in the case of a fitted door stop, over a length surrounded by a groove 19 of the hinge wing 2. May be provided with a surface hardening 20.

[Brief description of the drawings]

FIG. 1 is a schematic diagram illustrating a torsion bar door stop structurally associated with a door hinge.

FIG. 2 is a side view showing an S-shaped torsion bar spring.

[Procedure amendment]

[Submission date] October 16, 2000 (2000.10.16)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction contents]

In the embodiment shown here, the torsion bar door stop 4 structurally connected to the hinge has an S-shaped torsion bar spring which locks via its shaft portion 14. Groove recess 19 in hinge wing plate of hinge wing 2
Which is supported on the hinge wing via a support arm 16, the area forming the load arm 17 protruding above the two hinge wings 2 and 3. The load arm 17 of the torsion bar spring interacts with the latch segment 8 of the door stop 4. This segment is formed on one leg 5 of the U-shape of the hinge wing 3, which is formed by alternating protrusions 6 and depressions 7, in the embodiment shown here three latching positions for the door. including. As shown in particular from the illustration of FIG. 2 in particular, the load arm 17 of the torsion bar spring
It has a surface hardening 18 over the length that interacts with the latch segment 8.
As further shown from the illustration of FIG. 2, the shaft portion 14 of the torsion bar spring
In addition, in the case of a fitted door stop, a surface hardening 20 may be provided on a part of the circumference of the hinge wing 2 over a length portion surrounded by the groove-shaped recess 19.

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Claims (6)

[Claims] 1. A first portion that can be attached to one door assembly portion, door or door post, and a second portion that can be attached to the other door assembly portion.
A motor vehicle vehicle stop comprising at least one spring-loaded brake holder disposed between the two parts, one of the two parts being relative to the other; Formed by components which can be moved in the direction of the door, which are arranged in accordance with the intended door holding position and are provided with brake ramps or latching marks which interact with the spring-loaded brake support and which are furthermore interconnected with the brake support. A door stop for a motor vehicle, characterized in that at least the area of the acting spring that comes into contact with the brake carrier is surface-hardened. 2. The spring, which interacts with the brake carrier, is hardened to a limited extent both in the region in contact with the brake carrier and in the region in contact with the fixing and gripping means. The motor vehicle door stop according to claim 1, wherein A first portion attached to one of the door assembly portions is formed by a latch segment including a latch mark; a second portion attached to the other door assembly portion is formed by a torsion bar spring; The body is formed by rollers provided on the free load arm of the torsion bar spring,
3. The motor vehicle door stop according to claim 1, wherein the load arms of the torsion bar spring are further surface hardened over a length forming the roller bearing device. 4. The torsion bar spring has an S or C-shaped design, is mounted via its shaft part in a grooved recess in the hinge plate of the hinge wing and via its support arm one of the hinge wings. 4. The motor vehicle according to claim 1, further comprising a roller bearing device which is supported on the hinge plate and forms a braking support in an end region of the free load arm. Door stop. 5. The free-loading arm of an S- or C-shaped torsion bar spring, which is mounted in a groove-like recess in the hinge plate of the hinge wing via a shaft portion, provides a braking support over the length of its end region. A motor vehicle door stop according to any of the preceding claims, characterized in that it is formed and is provided with a surface hardening over a part of its circumference in this area. 6. A shaft portion of an S- or C-shaped torsion bar spring, which is mounted over a portion of its length in a grooved recess in the hinge plate of the hinge wing, is coupled to at least the grooved recess of the hinge plate. 6. A motor vehicle door stop according to claim 1, characterized in that it is surface hardened over its peripheral area and over its length engaging with the grooved recess.