CZ305204B6 - Door balancer for motor vehicles - Google Patents

Abstract

In the present invention, there is disclosed a door balancer for motor vehicles consisting of a plastic chousing (1), attached to the door or to the door frame, and being performed integrally with at least one flexible element supporting a slider (3), which is pressed by a springing element to a profiled track (22) of a pull rod (2), supported underneath the first slider (3) by a second slider (3´), whereby said second slider (3´) or a carrier (31´) thereof is performed integrally with the plastic housing (1), wherein the pull rod (2), passing through an opening (13) in the housing (1), is attached by its one end (21) to the door frame or to the door, and is provided with an end stop (23) for restricting maximum angle of door opening. The springing element (11) is performed integrally with the plastic housing (1) and the slider (3, 3´) or the carrier thereof. It consists of at least one elastic base lamella (4), which protrudes from one side of a base plate (10) parallel with the pull rod (2), and at its end remote from the base plate (10) it is provided with the slider (3) or with the slider (3) carrier (31).

Description

BACKGROUND OF THE INVENTION The present invention relates to a motor vehicle door restrictor which provides both locking of the door at certain opening angles and regulating the force required to open and close the door. The door restrictor is arranged between the frame and the door and consists of a shaped rod which extends between the resiliently supported gliders or the braking members housed in the restrictor housing when the door is moved.

BACKGROUND OF THE INVENTION

Motor vehicle doors must not open or close spontaneously in accordance with the car manufacturers' regulations and must close in the final closing phase without force. Furthermore, it is desirable that the side doors be locked at least at two opening angles and that the manual force required to open them increases with the opening angle of the door and that the maximum opening of the door is limited by the stop. For this purpose, the door is provided with a limiter which forms a kinematic link between the door and the frame or body pillar, to which the door is pivotably connected by means of the door hinges. The limiter consists of a rod in the form of a slightly bent flat bar, which at one end is articulated to a rod holder, attachable to a motor vehicle door or body pillar. The two opposing rod surfaces are formed by abutment tracks for spring-loaded braking members or gliders, of which at least one track is shaped. The rod extends with variable resistance between one support and one spring-loaded seat member or between two spring-loaded seat members housed in a limiter housing that is attached to a door or body pillar. The at least one bearing member is urged into contact with the shaped rod bearing track by a biased spring. When the door is opened, the door rotates in the door hinges, whereby the rod is forcedly drawn between the resiliently clamped seat members. When the thickness of the rod extends between the abutment members when the drawbar is pulled, the at least one abutment member is copied against the spring force, thereby resisting the draw resistance and hence the total resistance of the door movement, consisting of the rotational resistance of the door. hinges and drag resistance pulls, swells. When the thickness of the rod decreases, the force component of the preloaded spring acting through the engagement member on the downward section of the shaped engagement of the rod causes a reduction in the overall resistance to movement of the door. In the position where the door is to be locked, the shaped tie rod seating is provided with a recess.

The door restrictors usually consist of a sheet metal or plastic box of prismatic shape, in the inner cavity of which springs are supported, supported on one side by the inner opposite sides of the box and on the other side by abutment members which clamp the shaped rod between them. The springs are steel, such as EP 0 643 184, EP 1 343 946 or rubber, such as US 2003/0 101 537, US 2006/0 150 366, EP 1 418 075 and the abutment members are in the form of rollers or gliders.

The disadvantages of these door restrictors are the large number of components, expensive production and high labor intensity.

GB 2 411206 discloses a door restrictor which partially removes the drawbacks of the previous restrictors. Its casing is made of plastic and, with it, sliders are also integral with it, which bear against the mutually opposed shaped tracks of the drawbar. The housing is formed by a substantially rectangular frame, with a removably closed front and rear lid with through windows for the rod. Two flexible ribs protrude from opposite shorter inner sides of the frame, each of which has a glider formed at its opposite ends. The two gliders are slidably mounted between the two lids and are pressed against each other on the opposing shaped tracks of the tie rod by elastic members inserted between said flexible ribs. The reaction forces of the gliders in the pulling directions are absorbed by the two lids of the housing. Cabinet or rectangular frame, flexible ribs, gliders and one cabinet lid are made in one piece

As a plastic casting by means of die casting technology, either from one material or from several materials (so-called multi-component injection, in order to achieve the desired properties of the individual parts of the restrictor. For example, the housing may be made of a more rigid material such as The disadvantage of this solution is also the large number of components as well as the friction between the gliders and the lids or casing fronts, which creates the need for greater force exerted by the spring members and which can result in sound and seizure.

It is an object of the present invention to provide a plastic door limiter housing made of spring members carrying glider carriers or gliders integrally in one piece to facilitate manufacture and assembly while retaining all the appropriate features of more complex door limiters.

SUMMARY OF THE INVENTION

The aforementioned disadvantages are overcome and the object is achieved by a motor vehicle door restrictor according to the preamble of the main claim, characterized in that the spring member is integrally formed with the plastic housing and the glider or its carrier and is formed by at least one flexible base plate extending from one side of the base plate parallel to the draw bar provided with a glider or a glider carrier at the end of the base plate facing away.

Such a design will allow for the formation of an elastic member integral with the base plate of the housing and with the glider or with the glider carrier, which provides the necessary pressing forces on the gliders, while the sliding of the gliders is not hampered by friction against the casing lids. The blades of the spring member form resilient beams fixed on one side into the base plate. By selecting the number and shape of the flexible slats and the method of their connection at the free ends, the magnitude and course of forces acting on the glider can be selected.

Preferably, the resilient member is formed by at least two resilient base slats which are rigidly connected to each other at the free ends of the base plate facing away by a web, at the end of which faces the rod, a glider or a glider carrier is formed.

This construction achieves both a steeper increase in the force in the spring member and a substantially vertical guide of the glider and prevents it from being thrown out when pushed out of the locking depression.

Advantageously, the spring member comprises resilient additional slats extending from one side of the base plate in one direction of the draw bar movement substantially parallel to the base slats, wherein the additional slats are in contact with each other in the non-biased - unloaded state at the free ends.

Such a design will allow for a greater elastic force to be applied to the glider due to the greater number of flexible slats and to provide a linear increase in the force acting on the glider.

Advantageously, the spring member comprises resilient additional slats extending from one side of the base plate in the direction of travel of the rod substantially parallel to the base slats, wherein the free ends of the additional slats facing away from the base plate have gaps between them.

Such a design will allow slower increases in the force applied to the glider as it moves against the resilient member due to the stepped engagement of the resilient blades in the resilient.

Advantageously, the base plate is plate-shaped and is perpendicular to the longitudinal plane of symmetry of the shaped track passing through the pivot axis of the tie rod.

-2GB 305204 B6

Such a lamella structure resembling a fixed leaf spring is suitable for gliders abutting a shaped track of the rod, formed in the form of a corrugated strip, in a straight line perpendicular to the direction of travel.

Preferably, the base plates and the additional plates extend from the base plate parallel to the displacement plane σ of the tie rod 2, being flat and of equal thickness and length.

This design ensures that the stress magnitude and bending moments are the same in all slats of the same type.

For some applications, it is advantageous if one glider is designed as a support and is connected to the base plate by a rigid structure.

This construction allows the linkage to be formed with only one shaped bearing track and one plane bearing track.

Advantageously, the rigid structure is formed by plate-shaped slats perpendicular to the flexible plate-shaped slats supporting the spring-loaded glider.

Such a structure is lightweight and sufficiently strong.

It is preferred that the spring member and / or the rigid member be provided at its free end with a sidewall on which the side of the tie rod rests.

This construction ensures stable lateral guidance of the swing rod between the gliders.

Clarification of drawings

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

Giant. 1 is a perspective view of the door restrictor of variant I with gliders at the beginning of the shaped runway;

Giant. 2 is a longitudinal cross-section A-A of FIG. 1;

Giant. 3 is a perspective view of the door restrictor of variant I with the gliders in the middle of the shaped track;

Giant. 4 shows a longitudinal section B-B of FIG. 3

Giant. 5 - longitudinal section of the spring member III. variants;

Giant. 6 - longitudinal section of the spring member IV. variants;

Giant. 7 - detail of the glider;

Giant. 8 - detail of a glider in a glider carrier;

Giant. 9 is a detail of a glider with sidewalls extending from the glider carrier;

Giant. 10 is a perspective view of the door restrictor II. variants with one suspension and one fixed glider;

Giant. 11a is a graph of the forces acting on the glider of variant I;

Giant. 11b - graph of the forces acting on the glider of the limiter III. variants;

Giant. face - graph of the forces acting on the glider of the limiter IV. variants.

-3 CZ 305204 B6

DETAILED DESCRIPTION OF THE INVENTION

As can be seen from FIG. 1, a motor vehicle door restrictor consists of a tie rod 2, attachable at one end 24, pivotable to a vehicle body pillar (not shown) and passing through a housing 1, connectable to a vehicle door (not shown). The drawbar 2 is provided on two opposing sides (symmetrical to the horizontal plane of symmetry 24 of the drawbar 2) by abutting shaped tracks 22 with locking depressions 220, on which the gliders 3 and the braking members are pressed by means of spring members 11, respectively. When opening or closing the door, the rod 2 is pulled or pushed between the spring-loaded gliders 3, which, by virtue of friction and spring force acting on the shaped track 22, produce the desired course of resistance when opening and closing the door. The greatest resistance is caused by the movement of the glider 3 from the locking recess 220, in which the glider 3 is moved by the shaped track 22 of the draw bar 2 against the force of the spring rod JT and reaches the greatest stroke. The mean resistance is induced when pushing or pulling the rod 2 in the direction in which the shaped tracks 22 move away from each other (see Figs. 1 and 2), and less resistance is induced when the rod moves in the section between the locking recesses 220 where The two shaped tracks 22 are parallel (see FIGS. 3 and 4). Conversely, a negative resistance is induced when the glider 3 moves into the locking recess 220, and no or less negative resistance is induced when stretching in the direction in which the shaped tracks 22 approach each other. At the maximum opening angle of the door, the end stop 23 of the draw bar 2 engages the front of the housing 1 formed by the reinforcing ribs 33 on the web 32 and the spring-loaded glider 3 engages the last locking depression 220. 2/3 of maximum opening angle.

The housing 1 consists of a base plate 10 or a flange of approximately rectangular shape with a central hole 13 for the passage of the rod 2, from which spring members 11 protrude on one side in the drawing direction of the rod 2. see Fig. 7 to Fig. 9). The upper spring member JT is arranged above the upper molded track 22 and the lower spring member H 'is arranged below the lower molded track 22'. The resilient member 11 according to a variant 1 of the invention (see FIGS. 1 to 4) is formed by plate-like resilient base plates 4 extending equidistant from one side of the base plate 10 in the feed direction S of the draw bar 2 substantially parallel to the the horizontal plane of symmetry 24 of the tie rod 2, which is identical to the plane of movement σ of the tie rod 2. The flexible base plates 4 and the additional plates 41 described below preferably have the same thickness, the same length and the same width. However, they can be made with different thicknesses, lengths and widths. In the unstressed state, the base plates 4 are perpendicular to the base plate 10 (see FIGS. 1 and 2) and resemble a set of beams of equal length fixed on one side. At the free ends facing away from the base plate 10, the base plates 4 are fixedly connected to one another by a web 32 parallel to the base plate 10, at the end of which the rod 2 faces a cylindrical slider 3 which abuts in a straight line with the shaped track 22. formed in the form of a corrugated strip. If the slats 4 are plate-shaped, they must be perpendicular to the longitudinal plane of symmetry (φ) of the shaped track 22 passing through the pivot axis O of the tie rod 2.

On the side facing away from the base plates 4, the webs 32 are provided with reinforcing ribs 33, some of which form an abutment for the end stop 23 of the drawbar 2. When the drawbar 2 is pulled through the boxes 1, the shaped tracks 22, 22 'cause vertical movements of the gliders 3. 3 and 4 shows the deflection of the plate-shaped base plates 4 with the prestressed spring members 11 of the limiter according to the variant I embodiment.

The gliders 3 are provided with sidewalls 34 between which the sides of the tie rod 2 are guided, which are pivoted about the axis O on a door frame (not shown). The entire housing 11, consisting of the base plate 10, the base plates 4, the web 32 and the glider 3 or the carrier 31 of the glider 3, is made of plastic or plastic, respectively, by die casting technology. For example, glass fiber filled PA 66 and POM materials such as Derlin 525GR, Zytel 80G33HS1L NC10, Grivory GV5H, Grivory GVN-35-H, Grivory GVL-5H, Grivory HTV-5H1 can be used. However, this list does not limit

Using other suitable materials. In this case, it is possible to use only one material for the entire casing 1 or to create more stressed casing parts, such as a base plate 10 of a stronger material and less stressed casing part 1, such as gliders with side walls of less strong material with good sliding properties.

Within the scope of the invention, it is also possible to form the carrier 31 of the glider 3 in one piece with the housing 1, into which the glider 3 is subsequently inserted (see FIGS. 8 and 9). The glider 3 is connected to the carrier 31 by a dovetail connection, but it can also be connected otherwise. The technology of manufacturing a door restrictor with a separate glider 3 is less demanding and gliders 3 of different shapes and materials can be used.

FIG. 5 shows III. variant and in Fig. 6 is shown IV. A variant of the door restrictor according to the invention, which differs from the variant I in that the spring member 11 is provided in addition to the two base plates 4, the free ends of which are rigidly connected to each other by a web 32, additional plates 41 protruding from one side of the base plate 10. As the base plates 4 are connected at the opposite end by a web 32, but which are at their free ends facing away from the base plate 10, provided with lower abutments 42 and upper abutments 43 which abut against each other when the spring member 11 is loaded. U III. the variants in FIG. 5 still abut, i.e. even if the spring member 11 is not loaded by the pressure of the glider 3. As a result of this arrangement, the increase in compression force of the spring member 11 is linear but less steep than in the variant 1.

U IV. the variants according to FIG. 6 do not abut the upper and lower abutments 42, 43 in the unloaded state of the spring member 11, but there are gaps between them. the upper face 320 of the web 32 on the lower abutment surface 42 of the first adjacent additional slat 41, and at the next additional loading, this additional slat 41 engages in the spring. As soon as its upper abutment surface 43 abuts the lower abutment surface 42 of the next adjacent additional slats 41, these also engage in the spring and so on. The course of the force F under loading of the spring member 11 thus formed is not directly proportional to the magnitude of the displacement L or the stroke of the glider 3, but consists of linear sections, each successive linear section G _{n +} i having a greater steepness than the previous section G _n . Yet the number of linear sections G ₂ to G _n corresponding to the number of additional slats 41, participating in the springing.

Figures 11a to 11c show graphs of the course of the force F acting on the glider 3 during the lift L in individual variants of the limiter.

Giant. 11a shows the course of force F in variant I, comprising only the base plates 4 connected at their free ends by a web 32 (see FIGS. 3 and 4). The force F increases linearly in a straight line as a function of the lift L of the glider and the slope of the line is proportional to the number of base plates 4. Since the base plates 4 are connected at their free ends by a web 32. all variants I, III and IV of the limiter.

Giant. 11b shows the course of force in III. variants comprising at least one base plate 4 and additional plates 41, the free ends of which are in continuous contact with each other but are not firmly connected (see FIG. 5). As can be seen from the graph in Fig. 11b, the force F also increases linearly, but the increase in force or steepness of the line is less than in the variant I of Fig. 11a due to the non-interconnection of the free ends of the additional slats. .

Giant. 11c shows the course of force in IV. variants comprising at least one base plate 4 and additional plates 41, the free ends of which are not in permanent contact with each other and in the unloaded state there are gaps between them (see FIG. 6). As can be seen from the graph, force F does not increase linearly from zero to F ₄ at glider L lift 3 from zero to L _b but in linear sections G1 to G5, where each subsequent linear segment G _{n +} i has a greater steepness than the previous segment G _n . This is due to the fact that additional additional slats 41 are gradually connected to the spring.

-5GB 305204 B6

FIG. 10 shows II. A variant of the door restrictor wherein one spring member 11 carrying the glider 3 is replaced by a rigid member 12 carrying the glider 3. As can be seen from the figure, the rigid member 12 is formed by a plurality of plate-like rigid slats 5 extending perpendicularly from the base plate 10 and The rigid slats 5 are interconnected across the stiffening ribs 51 and are connected at their free ends by a web 52, at the end of which faces the not shown rod, a glider 3 is formed with sidewalls 34.

The advantage of this alternative is that the drawbar 2 needs only one shaped bearing track 22 for the spring-loaded glider 3 and one plane track for the non-spring-supporting glider 3 supported by the rigid member 12. Of course, it is possible to combine variant II with variants I, III and IV .

PATENT CLAIMS

Claims (13)

PATENT CLAIMS A motor vehicle door limiter consisting of a plastic housing (1) attachable to a door or door frame which is integrally formed with at least one flexible member carrying one glider (3), which is pushed by the resilient member onto the shaped track (22) of the tie rod (2) supported under the first glider (3) by the second glider (3 '), the second glider (3') or its carrier (31 ') being integrally formed with the plastic housing (1), the rod (2) passing an opening (13) in the housing (1) is connectable to one of the door frames (21) or to the door and is provided with an end stop (23) to limit the maximum opening angle, characterized in that the spring member (11) is integrally formed with a plastic casing (1) and a glider (3, 3 ') or a carrier thereof, and is formed by at least one resilient base plate (4) extending from one side of the base plate (10) in parallel by a contraction (2) and provided with a glider (3) or a glider carrier (31) at the end of the base plate (10) which faces away. Door limiter according to claim 1, characterized in that the spring element (11) is formed by at least two resilient base plates (4), which are fixedly connected to each other at the free ends of the base plate (10) by a web (32), a glider (3) or a carrier (31) of the glider (3) is formed in the facing rod (2). Door limiter according to one of Claims 1 and 2, characterized in that the spring member (11) comprises resilient additional slats (41) extending from one side of the base plate (10) substantially parallel to the base slats (4), the additional the slats (41) are in non-biased - unloaded state at the free ends facing away from the base plate (10) in contact with each other. Door limiter according to one of Claims 1 to 5, characterized in that the spring member (11) comprises flat flexible additional slats (41) extending from one side of the base plate (10) substantially parallel to the base slats (4), the free ends The additional slats (41), facing away from the base plate (10), have gaps (m) between them in the non-biased-unloaded state. Door limiter according to one of Claims 1 to 4, characterized in that the base plate (4) is plate-shaped and is perpendicular to the longitudinal plane of symmetry of the shaped track (22) passing through the pivot axis (0) of the tie rod (2). Door limiter according to at least one of Claims 1 to 5, characterized in that the base plates (4) and the additional plates (41) extend from the base plate (10) parallel to the displacement plane (σ) of the tie rod (2), flat and have the same thickness and the same length. -6GB 305204 B6 Door limiter according to at least one of Claims 1 to 6, characterized in that one glider (3) is designed as a support and is connected to the base plate (10) by a rigid member (12). Door limiter according to claim 7, characterized in that the rigid member (12) is formed by plate-like rigid slats (5) perpendicular to the base plate (4) of the spring member (11). Door limiter according to at least one of Claims 1 to 8, characterized in that the spring member (11) and / or the rigid member (12) is provided at its free end with a sidewall (34) against which the side of the tie rod (2) abuts. 6 drawings List of reference marks: 1 cupboard 10 base plate 11 a spring member 12 a rigid member 13 hole 2 rod 21 one end 22 a shaped track 220 a locking depression 23 end stop 24 plane of symmetry 25 transverse bearing surface 3 glider 31 carrier 32 web 320 upper face 33 reinforcing ribs 34 bočnice 4 base plate 41 additional slat 42 bottom seat 43 upper seat 5 rigid lamella 51 ribs 52 stiff member σ plane of motion m m gap She was pulling on the pivot axis. -7EN 305204 B6 / 0 // /