CN1296547A - Torsion bar door stop for motor vehicle doors - Google Patents

Abstract

The invention relates to a torsion bar door stop for motor vehicle doors comprised of a catching device (8) which can act upon a door assembly part, a door or a door pillar, and of a torsion bar spring (4) which can act upon the other door assembly part. Said torsion bar spring (4) primarily constructed of a torsion spring bar is held on the door assembly part by a shaft part (14) which is connected to a load arm (17) such that it is prevented from turning. In addition, the torsion bar spring is supported against the door assembly part by a support arm (16) which is connected to said door assembly part. The catching device (8) assigned to the load arm (17) of the torsion spring bar is formed by at least two catching rollers (18) which are rotationally mounted on each bearing journal. In order to prevent the door stop from becoming noisy as a result of possible aspects of wear in the vicinity of the catching device (8), the invention provides that at least the catching rollers (18) are surface hardened in a middle area (19) which extends over a part of the height of said rollers.

Description

Torsion Bar Door Locator for Automotive Doors

The invention relates to a torsion bar type car door locator for an automobile door, which consists of a locking device that can be fixed on a car door assembly part, a car door or a car door pillar and a torsion bar spring that can be fixed on another car door assembly part composition, wherein the entire torsion bar spring consisting of a torsion spring rod is fixed on the door assembly part by means of a rod part which is anti-rotatably connected to the loading arm and a support arm connected to this part is supported on the door assembly part, and in Here, the locking device associated with the loading arm of the torsion spring lever is formed by at least two locking rollers which are each rotatably mounted on a bearing neck.

Although, in principle, such torsion bar door retainers are characterized in that the brake holding force is achieved by means of a torsion bar spring clamped on one side on a door assembly part, door or door pillar and a torsion bar spring clamped on the other door However, it is known that there are different forms of implementation within this range, to be precise, not only those that are used independently of the door hinge, but also those that are used with the door A hinged structurally integrated door locator. All such known constructions of torsion bar door locators, whether they are used independently of the door hinges or as structurally integrated door locators with the door hinges, have the problem that, during the working period An increase in noise will occur after a period of time. Due to the many different individual designs of torsion bar door lockers of this known construction, the causes of the increased noise occurring earlier or later during operation are also different.

In the simplest torsion bar door retainer of the structure mentioned here, the locking device is fixed on a door assembly part in a direction perpendicular to the axis of the door hinge, and is bent concentrically with the axis of the door hinge. The outer circumference of the torsion bar spring is composed of a segment with at least one locking mark on its outer circumference, while the torsion bar spring consists of an S or C-shaped bent spring bar, which is fixed to the other door assembly part by one of its bent edges, and through its The other crimp cooperates with the locking device.

In the torsion bar type car door positioner with simple structure of this type, along with the crimp of the torsion bar spring forming a loading arm enters into the locking mark formed as the locking groove of the locking device, noise is generated, which is very common in automobiles. Interference during operation can be detected. Although this undesired noise formation can be mitigated by smoothing the detents forming the locking marks, at the same time, however, an indeterminate fixing point for the door must be tolerated.

In order to achieve a high degree of accuracy in positioning and holding the door stop point on the one hand, and to reduce the noise of the torsion bar door locator on the other hand, in the improved structure type of the torsion bar door locator (US-PS 3550 185) , the locking mark of the locking device is formed by a locking roller at least partially provided with a peripheral profile. Therefore, compared with a simple embodiment, although the transition from sliding friction to rolling friction between the loading arm of the torsion bar spring and at least one locking mark of the locking device is achieved to a certain extent, and at least partially excludes Increased noise caused by the sliding fit of the lock mark and the loading arm is eliminated. In addition, however, in order to further reduce the noise increase caused by the loading arm of the torsion bar spring into a locking position, the pre-locking rollers are all made of plastic material in order to also achieve sound insulation of the object. This relatively complex measure does not at least generally exclude an increase in noise when the loading arm of the torsion bar spring cooperates with the locking device. One of the reasons for these measures can only lead to unsatisfactory results when solving the problem of increased noise during long-term operation, which must also lie in the ease of wear, especially the locking rollers. Therefore, when adopting the torsion bar type car door locator (DE-PS 32 29 766) of this structure mentioned here, it was not long ago that the lock rollers forming the lock marks were turned to metal again, but now every The second is to install or arrange them in pairs in such a way that two locking rollers each at least partially provided with a peripheral profile jointly form a locking mark. However, the locking device constructed in this way can only effectively ensure noise reduction when the loading arm of the torsion bar spring is continuously abutted against the locking roller over the entire angle that the door is opened. In order to ensure that the loading arm of the torsion bar spring rests continuously on the locking roller of the locking device in this way, it is first necessary to keep them aligned with each other. During the opening and closing movement of the door, the loading arm of the torsion bar spring can be moved from The peripheral profile of a locking roller slides continuously into the peripheral profile of an adjacent locking roller. Of course, the prerequisite is that the locking roller cannot emerge neither during the door opening movement nor during the door closing movement Relative mutual rotation, that is to say, the complementary peripheral profiles of two adjacent locking rollers must always maintain the same predetermined mutual alignment in both directions of rotation. However, due to the unavoidable and increasing wear phenomena over time, mainly on the locking rollers, even this relatively complex design of the torsion bar door locker cannot be fully reliable. The necessary forced mutual alignment of two adjacent support rollers is ensured over a relatively long operating time, with the consequence that, after a suitably long period of operation of the door locker, when using a torsion bar door locker of this type Increased noise can also occur.

Therefore, the task of the present invention is to improve the torsion bar type car door locator of the aforementioned structural type, adopt simple means and at the same time when the torsion bar type car door locator has the same structural parts, avoid due to possible occurrence in the locking device range. Increased noise due to wear and tear.

According to the invention, this object is basically solved in that at least the retaining rollers are surface hardened in the waist region up to a part of their height. The locking rollers are surface hardened at least in the area in contact with the torsion bar spring-loaded arm, preventing galling phenomena and thus wear on the locking roller circumference. It is thus firstly ensured that the locking roller always maintains the cylindrical configuration of its peripheral surface and thus always cooperates optimally with the loading arm of the torsion bar spring. On the other hand, due to the avoidance of wear, the mounting of the locking rollers is protected against dirt to the greatest extent without special measures, so that even after a long period of operation of the door locker, the locking rollers can also be rotated easily, Furthermore, the generation of noise in the locking roller bearing is likewise ruled out. Because the measure according to the invention can use cylindrical locking rollers, it also has the advantage of using a consistent locking roller structure for a variety of torsion bar door locator variants, so that the measures according to the invention can also reduce Manufacturing costs.

In a preferred embodiment of the invention it is further provided that the surface-hardened waist region of the locking rollers is annular and has a larger diameter than the remaining roller body diameter. In this case, the annular, surface-hardened waist region of the locking roller has a smooth cylindrical outer circumferential surface.

In addition, according to a particular feature of the invention, the axial height of the annular, surface-hardened waist region of each locking roller is only a fraction of the overall height of the locking roller, preferably less than the overall height of the locking roller one-third of.

In addition, in conjunction with partial surface hardening of the locking rollers, it is also provided in an advantageous further development of the invention that the loading arm of the torsion bar spring also has a smooth surface over its entire longitudinal section which cooperates with the locking rollers. The outer circumference of the cylinder is also case hardened in this area.

In addition, it is provided in a preferred embodiment of the torsion bar door retainer according to the invention that the locking device comprises three ring-shaped rails arranged along a non-concentric with the hinge axis of the door, which are respectively rotatably mounted on a bearing neck. locking rollers.

In addition, a torsion bar type car door positioner equipped with a locking device designed according to the present invention and structurally integrated with the door hinge is characterized in that the torsion bar spring is placed on a hinge wing, and the locking device is installed on On the other hinge wing, the hinge wing carrying the locking device is composed of a plate bending part, and the locking rollers constituting the locking device are along the direction of the plate bending part perpendicular to the hinge axis and extending non-concentrically with the hinge axis. The edge portion of the bent portion is configured.

The invention is described in detail in the following illustration by means of an exemplary embodiment shown in the drawing, which shows:

Figure 1 is a top view of a torsion bar door locator structurally integrated with a door hinge;

Figure 2 is a side view of the torsion bar door retainer structurally integrated with a door hinge of Figure 1;

The combined unit of hinge and torsion bar door retainer shown in the figure, in particular for detachable motor vehicle doors, consists of a hinge and a torsion bar door retainer 4, which hinge has 2 With the help of hinge pin 1, the hinge wings 2 and 3 that are swingably connected to each other, one hinge wing 2 can be kept fixed on the door body not shown in the figure, and the other hinge wing 3 can be detachably fixed on the same not shown in the figure. on the goal post shown. The hinge wing 3, which is detachably fixed on the door post, is formed by a plate folded into a U-shape, where, on the upper leg 5 of the U-shaped element, which is oriented perpendicular to the hinge axis, alternating The locking device 8 of the door locator 4 formed by the connected protruding part 6 and the recessed part 7, on the leg 9 of the lower part of the U-shaped part, which is oriented perpendicular to the hinge axis, constructs an extension parallel to the hinge pin 1. An elongated portion 10 of the hinge height is the same as the peg-shaped overhang. The hinged wing 2 has an approximately L-shaped cross section and is engaged with the hinged wing 3 , where it is rotatably connected to the hinged wing 3 by means of one of its profile legs via the hinge pin 1 . And it is fixed on the car door by its other profile leg 13 .

The hinged torsion bar door retainer 4 has an S-shape, is fastened via its rod part 14 with a bearing shell 15 in between, on the engaging hinge wing 2 and is held via a support arm 16 The part of the torsion bar spring supported thereon with the loading arm 17 protrudes upwards beyond the two hinge wings 2 and 3 . The loading arm 17 of the torsion bar spring is formed on one leg 5 of the U shape of the hinge wing 3 and consists of alternately connected protrusions 6 and recesses 7. The door retainer 4 includes three The locking device 8 in the locking position cooperates. Here, the brake part of the locking device 8 that cooperates with the door positioner loading arm 17 is made of 3 locking rollers 18 of the same shape structure, and here, each locking roller 18 can be moved by a supporting neck 25. They are respectively installed on a protrusion 6 of the locking device 8 so as to rotate around a vertical axis. In addition, it is provided in detail in the illustrated preferred embodiment that the three locking rollers 18 of the locking device 8 , which are each rotatably mounted on a bearing neck 25 , follow a circle that is not concentric with the door hinge axis. track configuration.

The locking rollers 18 are surface hardened only in the waist region 19 up to part of their height. In particular, as can be seen from FIG. 2, the hardened waist region 19 of the locking roller 18 is annular and has a larger diameter than the remaining diameter of the locking roller 18. Here, especially from FIG. 2 As can be seen in , the annular, case-hardened waist region 19 of the locking roller has a smooth cylindrical outer surface. In addition, as can be seen in detail in FIG. 2, the axial height of the annular, surface-hardened waist region 19 of each lock roller 18 is only a fraction of the overall height of the lock roller 18, preferably less than the lock roller 18. Bit roller 18 one-third of the full height.

In addition, it can also be seen from FIG. 2 that the loading arm 17 of the torsion bar spring is likewise on its entire longitudinal section 20 which cooperates with the locking rollers 18, in particular the surface-hardened waist region 19 of each locking roller 18. It has a smooth cylindrical outer surface and is also case hardened in this area.

Claims (7)

1). the torsion bar type door prop of arrangements for automotive doors, can act on a door assembly part by one, catch means on car door or the car door post and the torsion-bar spring that can act on another door assembly part are formed, here, the whole torsion-bar spring that is made of the torsionspring bar partly is installed in the support arm that door assembly is partly gone up and connects therewith by one with an anti-rotation bar that is connected of loading arm and is supported on the door assembly part, wherein, for being rotatably installed in a lock-bit roller on the supporting neck respectively by at least two, the catch means of the loading arm of torsionspring bar configuration constitutes

It is characterized by:

At least these lock-bit rollers and they are hard-faced on a lumbar region only, and stretch on part of its height this lumbar region.

2). according to the described torsion bar type door prop of claim 1,

It is characterized by:

Hard-faced lumbar region is constructed to annular, and its diameter is bigger than remaining roll body diameter.

3). according to claim 1 and 2 described torsion bar type door props,

It is characterized by:

The lumbar region annular of lock-bit roller, hard-faced has the cylinder outer circumference surface of a light face.

4). according to the described torsion bar type door prop of claim 1 to 3,

It is characterized by:

The axial height annular of each lock-bit roller, hard-faced lumbar region is less than 1/3rd of the whole height of lock-bit roller.

5). according to the described torsion bar type door prop of claim 1 to 4,

It is characterized by:

Catch means include three that settle with the circuit orbit of body hinge axis decentraction along one, be rotatably installed in a lock-bit roller on the supporting neck respectively.

6). according to the described torsion bar type door prop of claim 1 to 5,

It is characterized by:

The loading arm of torsion-bar spring has the cylinder outer circumference surface of a light face equally on its whole vertical section of cooperating with the lock-bit roller, and is hard-faced equally on this zone.

7). according to the described torsion bar type door prop of claim 1 to 6,

It is characterized by:

It and a body hinge are structurally unified, here, torsion-bar spring is installed on the hinge wing, catch means is installed on another hinge wing, wherein, the hinge wing that is carrying catch means is made of a plate bending part, constitutes the lock-bit roller fringe region configuration perpendicular to the bent plate part of hinge axes that stretch with the hinge axes decentraction along, the plate bending part of catch means.

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