Cable guide arrangement for a power-operated vehicle sliding door
The cable guide arrangement addresses angular misalignment in power-operated vehicle sliding doors by using a roller system with deflection pulleys and guide channels, simplifying the design and reducing costs while ensuring a smooth, tangential cable path.
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- FORD GLOBAL TECH LLC
- Filing Date
- 2017-02-24
- Publication Date
- 2026-06-11
AI Technical Summary
Existing power-operated vehicle sliding door systems face complexity and high manufacturing costs due to angular misalignment issues in cable paths, requiring multiple pulleys to compensate for the angular displacement of the pull cable during opening and closing, which complicates the design and increases production costs.
A cable guide arrangement using a roller system with a deflection pulley and guide channel featuring angled or curved guide surfaces that deflect the pull cable tangentially to the pulley, eliminating the need for additional pulleys by accommodating angular misalignment through fixed guide surfaces.
Simplifies the pulley system, reduces manufacturing costs, enhances robustness, and minimizes wear and damage by ensuring a smooth, tangential path for the pull cable, thereby reducing axial forces on the deflection pulley.
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Abstract
Description
[0001] The invention relates to a cable guide arrangement for a power-operated vehicle sliding door according to the preamble of claim 1.
[0002] Vehicles such as minibuses and vans for passengers and cargo are often equipped with sliding side doors. However, sliding doors are now also used in larger passenger cars, particularly to facilitate entry and exit as well as loading and unloading. These sliding doors can be operated manually, but motorized or power-operated sliding doors are also available. This makes opening and closing the doors easier.
[0003] Various drive systems are known for moving such vehicle sliding doors. Typical types of drive systems include a cable pull system, in which the door is connected to at least one cable, which in turn can be moved back and forth by a drive mechanism. Pulley systems are often used to guide and / or redirect the cable. Such cable and pulley systems can be designed in different ways.
[0004] For example, US Patent 5,316,365 A discloses a door opening and closing system for vehicle sliding doors that uses a continuous cable loop. The cable loop can be driven in two directions to open and close the sliding door. This system utilizes cable drive pulleys with differently sized cable grooves, each suitable for low-speed and high-speed sliding door movements. Low speeds occur particularly when the door engages.
[0005] US Patent 2007 / 0194600A1 discloses a cable drive for a vehicle sliding door with two cables wound in opposite directions in a spiral pattern around a cable drum. A first cable runs from the cable drum to a front pulley and back to the sliding door. The second cable runs from the cable drum to a rear pulley and then back to the sliding door. When the cable drum is driven in opposite directions, the two cables wind up and down, pulling the sliding door in the corresponding direction. The cable drum has two auxiliary guides that run tangentially to it. These auxiliary guides are designed to guide the two cables away from the cable drum and outwards with minimal friction.
[0006] JP 3 907 249 B2 discloses a guide system for a vehicle sliding door cable, which also includes a pulley over which the cable runs. This pulley is spring-mounted to ensure smooth movement of the door.
[0007] Guides for cables, ropes, or belts are also known from other fields. For example, DE 20 2015 003 451 U1 discloses a suspension for an electrical cable in which a pulley is used over which the cable is guided to ensure a gentle bending radius at all times. This is intended to prevent damage to the cable. JP 2005 - 207 555 A describes a mechanism for compensating for misalignment of pulleys within a belt drive. DE 197 28 708 C2, on the other hand, describes an arrangement for installing a wiring harness in an automobile door. In this arrangement, the wiring harness runs through a protective device that is slidably mounted on a door panel.
[0008] DE 10 2007 016 815 A1 relates to a powered sliding door system for a building. Linear guides with guide profiles are used, with one leg of a guide profile supporting the weight of a sliding door leaf. A leg of a second guide profile also supports this weight.
[0009] Roller systems for power-operated vehicle sliding doors often use multiple rollers to guide a driven cable through its various states of motion. It is particularly important to consider that a sliding door is often guided in an angled or curved track during both opening and closing, first moving it out of the vehicle body and then along the outside of the body. Typically, an upper, a lower, and a middle track are used, with the cable running in the middle track. A roller system is often mounted at the curved end of this middle track. This roller system guides the cable at the end of the track through the side wall of the vehicle and around an edge.
[0010] When the door is closed, the design typically results in the pull cable lying slightly to the side of the rail's inner edge. When the door is opened, the pull cable wraps around the angled section of the rail. This creates an angular misalignment in the pull cable's path when the door opens and closes, which the pulley system at the end of the rail must compensate for. Often, highly complex pulley systems with more than one pulley are used to reduce friction and alter the cable's path. These are relatively expensive vehicle components to manufacture, making a simplification necessary.
[0011] In view of the current state of the art, the area of roller systems for cable drives of externally operated vehicle sliding doors therefore still offers room for improvement.
[0012] The invention is based on the objective of providing a cable guide arrangement for a power-operated vehicle sliding door, which uses a simple-to-manufacture roller system with which a pull cable can be deflected. In particular, a roller system is to be used which takes into account an angular offset in the course of the pull cable when opening and closing the vehicle sliding door.
[0013] According to the invention, the problem is solved by a rope guidance arrangement with the features of claim 1.
[0014] A cable guidance arrangement for a power-operated vehicle sliding door is shown, comprising a driven pull cable which is deflected by a roller system. The roller system has a bracket in which a deflection pulley is mounted, over which the pull cable guided by the bracket is deflected. The roller system is mounted at the end of a rail on the side wall of a motor vehicle, through which the pull cable runs. The rail has a curved section with an inner flank, and the pull cable slides along this inner flank of the curved section when the vehicle sliding door is opened and / or closed, resulting in an angular displacement of the pull cable relative to the guide pulley when the vehicle sliding door is opened and / or closed. In the installed state of the cable guidance arrangement, the deflection pulley is vertical and its axis of rotation is horizontal.and wherein a guide channel is formed on the bracket of the pulley system, through which the pull rope is guided to the deflection pulley. According to the invention, the guide channel has three guide surfaces, wherein a first guide surface is designed as a curved guide surface whose convex side points towards the deflection pulley, and wherein the two guide surfaces run parallel to the plane of the deflection pulley, and wherein at least the curved guide surface has an angle with a rounded edge that lies outside a wrapping sector of the pull rope around the deflection pulley, and wherein the guide surfaces form a conically tapered semi-funnel with an open longitudinal side that points towards the deflection pulley, wherein the pull rope is deflected in a direction tangential to the deflection pulley when it comes into contact with one of the guide surfaces of the guide channel.
[0015] Further, particularly advantageous embodiments of the invention are disclosed in the dependent subclaims.
[0016] It should be noted that the features and measures listed individually in the following description can be combined in any technically feasible manner and demonstrate further embodiments of the invention. The description further characterizes and specifies the invention, particularly in conjunction with the figures.
[0017] The cable guide assembly for a power-operated vehicle sliding door has a driven cable which is deflected at least once by a pulley system. This pulley system has a bracket in which a deflection pulley is mounted, over which the cable, guided by the bracket, is deflected. A guide channel is formed on this bracket through which the cable is guided to the deflection pulley. The guide channel has at least one guide surface by which the cable, when it comes into contact with this guide surface, is deflected in a tangential direction with respect to the deflection pulley. If a cable thus runs at an angle to the deflection pulley that, without deflection, would result in the cable being inserted into the pulley at too steep an angle, at least one guide surface ensures that the cable, when it comes into contact with this guide surface, is deflected in a tangential direction with respect to the deflection pulley.This is achieved through a suitable arrangement and shape of at least one guide surface.
[0018] In this way, axial forces on the pulley can be reduced. A tangential path into the pulley can be achieved, but even an approximation of a tangential path can represent an improved path for the pull rope. Therefore, the pull rope is deflected in the direction of such a tangential path, although the tangential path does not have to be fully achieved.
[0019] A guide surface can be formed in various suitable ways. As described, the guide channel can have at least one curved or arched guide surface, the convex side of which faces the pulley. The guide surface is arranged such that when a pull rope rests against the convex side, it is deflected into the pulley in a tangential direction. The curved surface enables a smooth deflection of the pull rope without tension peaks.
[0020] In another embodiment, the guide channel has at least one angled guide surface, the angle of which forms an obtuse angle β on the side of the deflection pulley. The obtuse angle β is, for example, on the order of 185° to 225°, particularly around 200°. Such a guide surface can be formed by two surface sections that, viewed from the pull rope, extend towards each other at the aforementioned obtuse angle β. This results in an edge at the transition between the two sections. This edge is preferably rounded on the side of the deflection pulley. Furthermore, not all areas of a guide surface need to be in contact with the pull rope. Rather, the possible contact can also be limited to the (rounded) edge in the area of the angle and a partial section of the guide surface.
[0021] The guide channel can be bounded by at least two guide surfaces. The angle or curvature of at least one guide surface creates a deflection area on that surface, allowing a pull cable to be guided along a predetermined path to the deflection pulley, regardless of its entry point into the pulley system, if necessary. For example, if a pull cable enters a guide channel of the bracket centrally at a specific position of the sliding door, it does not contact this deflection area, and the pull cable can move freely within a certain angular range around this central entry point. This free angular range is chosen, for example, such that the pull cable can still be fed to the deflection pulley within this range, and this feed is sufficiently close to a tangential feed point.
[0022] If, however, the pull cable enters the roller system's mounting at a different angle, this is only possible within an angular range permitted by the shape of the guide surface(s). If a certain angle is exceeded, the pull cable is deflected in a direction closer to a tangential feed.
[0023] The guide channel thus formed, with at least one angled guide surface, makes it possible to accommodate any angular misalignment in the path of a pull rope. For this purpose, no additional pulleys are used beyond a deflection pulley; the guidance can be achieved solely by one or more guide surfaces. The guide surfaces used according to the invention are therefore not rotating surfaces of deflection pulleys, but rather fixed surfaces. This significantly simplifies the pulley system. It can be manufactured more easily and is also more robust with regard to potential wear and damage.
[0024] Different positions can be chosen for the deflection area of the at least one guide surface. The angle of any bend or the degree of curvature of a guide surface can also be chosen differently, as long as they ensure a tangential or nearly tangential entry of the pull rope into the guide roller in the event of an angular offset. The position and size of the bend or curved deflection area depend in particular on the arrangement of the guide surface relative to the deflection roller. In one embodiment, at least one guide surface in the area of the deflection roller runs essentially parallel to the plane of the deflection roller. Thus, at least one guide surface lies next to the plane of the deflection roller and deflects pull rope paths from this area in a direction of a tangential path with respect to the deflection roller.
[0025] For example, in the case of a guide surface with a surface normal orthogonal to the axis of rotation of the pulley, it has proven advantageous for the angle or curvature to be located in an area outside the wrapping sector in which the pulley makes contact with the pulley when passing centrally through the guide channel. In this way, a sufficiently large distance between the edge of the angle or curvature and this wrapping sector ensures that the pulley is always fed reliably to the pulley without any jerky movements of the rope.
[0026] In contrast, with a guide surface that is essentially orthogonal to the axis of rotation of the deflection pulley, it is advantageous if the angle of the bend or curvature is chosen such that the pull cord exerts only minimal axial forces on the deflection pulley as it slides along the guide surface. The deflection pulley, for example, has a circumferential groove in which the pull cord runs during deflection. The pull cord should be fed into the groove at the smallest possible angle to the plane of the deflection pulley, preferably tangentially to the deflection pulley. The deflection area of a guide surface is therefore preferably arranged close to the deflection pulley, but also far enough away from the axis of rotation of the deflection pulley.
[0027] The guide channel can thus be bounded by several guide surfaces, each arranged differently relative to the deflection pulley. This allows the path of a pull rope to be advantageously guided to the deflection pulley from different directions. Furthermore, several interconnected guide surfaces can also form a guide channel. As already mentioned, one embodiment provides that several guide surfaces form a funnel, through which a conically tapered guide channel with an opening angle α is formed.
[0028] As mentioned above, several guide surfaces form a partial funnel, with one open longitudinal side facing the pulley. The guide surfaces thus form a kind of curved shield, the concave side of which faces the pulley. A pull rope would therefore be guided in the direction of the pulley within the area of these guide surfaces.
[0029] In the various embodiments of the guide channel, the resulting opening angle α of the guide channel is, for example, between 15° and 45°, and particularly around 30°. However, other, and especially smaller, opening angles α can also be selected. An opening angle α of 0° can also be used, in which case several guide surfaces do not form a tapered funnel, but rather a simply tubular guide channel with parallel walls. Even with such a guide channel, it is possible to deflect a pull rope, when it rests against a guide surface, in a direction tangential to the deflection pulley.
[0030] Furthermore, the at least one guide surface preferably has a surface with a low coefficient of friction, in particular a surface made of polytetrafluoroethylene (PTFE / Teflon). This improves the sliding of the pull rope along the respective guide surface. Polyoxymethylene (POM), brass, etc., can also be used as materials for the surface of a guide surface.
[0031] The cable guide arrangement according to the invention can be used particularly advantageously when the roller system is mounted at the end of a rail through which the pull cable runs. This rail can be one of several rails provided on the side wall of a motor vehicle. If, for example, two or three rails are used one above the other, this can be the lower, upper, or middle rail. Such a rail has, for example, a curved section with an inner flank, and the pull cable slides along this inner flank of the curved section when the vehicle's sliding door is opened and / or closed. In such an embodiment, an angular displacement of the pull cable with respect to the guide roller occurs when the vehicle's sliding door is opened and / or closed, which can be accommodated by the roller system used without the need for a plurality of rollers.However, the roller system according to the invention can also be used advantageously on straight rails without curvature.
[0032] The pulley system can be installed in the vehicle in various orientations. For example, an installation configuration has proven advantageous in which the deflection pulley is vertical when the cable guide assembly is installed, and its axis of rotation is horizontal. This system is particularly suitable when the cable is fed vertically into the pulley system from below.
[0033] Further advantageous embodiments of the invention are disclosed in the dependent claims and the following description of the figures. These show Fig. 1 A schematic representation of the curved end of a rail of a vehicle sliding door with an adjoining roller system, Fig. 2 a first side view of an embodiment of a rope guide arrangement, Fig. 3 a longitudinal section through a cable guidance arrangement according to Fig. 2, Fig. 4 an enlarged view of the guide channel of a cable guide arrangement, Fig. 5 a three-dimensional view of a rope guidance arrangement, Fig. 6 a second side view of a rope guide arrangement, Fig. 7 a three-dimensional view of a bracket for a cable guide arrangement, and Fig. 8 a longitudinal section through a bracket according to Fig. 7.
[0034] In the different figures, identical parts are always provided with the same reference symbols, which is why they are usually only described once.
[0035] The cable guide arrangement according to the invention can be used in various designs of power-operated vehicle sliding doors that use driven pull cables to move the sliding door. It is particularly suitable for deflecting a driven pull cable at the end of a center rail located on the vehicle side wall. However, it can also be used with rails arranged in other ways. The pull cable is guided through the side wall of the vehicle around an edge in this area by the roller system used. The invention is described in more detail with reference to such an embodiment in the figures, but it is not limited to this use at the end of a center rail.
[0036] The Fig. Figure 1 shows a schematic representation of the end of a rail 30, at which a roller system 10 is arranged. In the depicted end region, the rail 30 is curved so that a traction cable, which is guided through the rail 30 by the roller system 10, runs along this curve. Fig. Figure 1 schematically illustrates that the path of the pull cable undergoes a specific angular offset relative to the guide roller when the sliding door is opened and closed. When the door is closed, the pull cable lies slightly beside the inner flank of the rail 30. When the door is opened, the pull cable wraps around the inner flank 31 of the angled section of the rail 30.
[0037] In order to take this angular offset of the pull rope into account in the pulley system 10, the pulley system 10 has a guide channel through which the pull rope 20 is guided. Fig. Figure 2 shows a side view of a roller system 10, in which the guide channel has an opening angle α in this plane. Within this guide channel, the traction cable is deflected in a direction tangential to the deflection pulley 40 when it comes into contact with a guide surface of the guide channel. Even if the traction cable does not exit the rail tangentially to the deflection pulley 40, it is deflected in the region of the deflection pulley 40 into a tangential or nearly tangential path to the deflection pulley. Fig. Figure 2 shows, for example, a 20' pull rope (dashed line) which does not exit the rail tangentially to the pulley, but through a Fig. The guide surface 2, arranged on the right, is deflected towards the deflecting roller 40 in such a way that it runs tangentially or almost tangentially into the deflecting roller 40. In this way, axial forces on the deflecting roller 40 can be reduced. However, the guide channel 50 can also have an opening angle α in another plane. This is shown in the side view of the Fig. 3 can be seen.
[0038] The roller system 10 includes a bracket 11 to which a deflection pulley 40 is attached. The bracket 11 can be designed to be attached and fixed to the side wall of a vehicle. In particular, through holes 14 or other fastening means can be provided for this purpose. The bracket 11 can have a plate-shaped base body to which two spaced-apart bearing halves 12 and 13 are attached, between which the deflection pulley 40 is rotatably mounted. Fig. 2) However, the bracket 11 can also have any other shape and configuration that allows the deflection pulley 40 to be rotatably mounted and enables the insertion and removal of a pull rope 20. In the embodiment shown in the figures, a pull rope 20 is guided through a guide channel 50 to the deflection pulley 40 and wraps around it in the area of a wrap sector 41. This wrap sector 41 comprises an area of approximately 90° of the circumference of the deflection pulley 40, and the pull rope 20 is deflected by approximately 90° in this sector. However, other wrap angles, for example between 70° and 80°, can also be selected. The deflection pulley 40 has a circumferential groove on its outer surface in which the pull rope 20 runs when wrapping around the deflection pulley 40.
[0039] The guide channel 50 is bounded by at least one angled guide surface. The longitudinal section of the Fig. Figure 2 shows a section through a first guide surface 51. This surface has an angle with a preferably rounded edge 54, which lies outside the wrapping sector 41. Due to the angle, an obtuse angle β is formed between the two sections of the guide surface 51 on the side of the deflection pulley (see also Fig. 8) Furthermore, a connecting clip 60 is provided, by which the two halves of the bracket are connected to each other. The pull cable 20 runs between this connecting clip 60 and the first guide surface 51. If no large angular deviations are expected in the direction of the connecting clip 60 and no axial forces occur, no guide surface is required in this area. Therefore, the installation space can be used for the connecting clip.
[0040] This area A of the roller system is shown in an enlarged section in the Fig. Figure 4 shows that, in particular, this magnification reveals that the rounded edge 54 of the angled guide surface 51 is not located within the area of the wrap sector 41 of the deflection pulley 40. In this illustration, the pull cable 20 runs approximately centrally through the guide channel 50. With this path, the pull cable 20 does not touch the guide surface 51, but runs directly into the groove of the deflection pulley 40. However, if the pull cable 20 were to enter the pulley system at a different angle, as is possible within the range of the possible angles of the Fig. Figure 3 shows that this would be limited on one side by the guide surface 51. In the Fig. Figure 4 shows such an alternative path of the pull rope (dashed line), where the pull rope 20' rests against the guide surface 51. Preferably, the position of the rounded edge 54 of the guide surface 51 and the path of the guide surface 51 are chosen such that the pull rope is not kinked at the edge 54 in this alternative path.
[0041] The guide channel 50 is not only formed by the guide surface 51, but is also bounded by further guide surfaces. These form a funnel-shaped guide channel, as shown in the three-dimensional view of the Fig. 5 and the side view of the Fig. As can be seen from Figure 6. A guide surface 51 and two further guide surfaces 52 and 53 form a conically tapered semi-funnel with an open longitudinal side that points towards the deflection roller 40. The connecting clip 60 abuts this open longitudinal side.
[0042] The funnel shape of the guide channel 50 with the three guide surfaces 51, 52, 53 is also shown in the three-dimensional view of the Fig. Figure 7 shows only the bracket 11 without the pulley and without the pull rope. The two guide surfaces 52 and 53 limit an angular offset in the path of a pull rope that occurs in a plane parallel to the axis of rotation of the pulley. Due to the funnel shape of the guide channel, an angular offset can also occur in other planes. Pull ropes from various directions can thus be guided precisely to the groove of the pulley so that the pull rope runs into the pulley as tangentially as possible. The angles of the individual guide surfaces create a circumferential, preferably rounded, edge on the inside of the semi-funnel.
[0043] To reduce axial forces on the deflection pulley, at least two guide surfaces 52 and 53 are preferably provided, running parallel to the plane of the deflection pulley 40. Without these guide surfaces 52, 53, a pull rope would enter the deflection pulley 40 at too steep an angle if there was an angular misalignment. However, the guide surfaces 52 and 53 are positioned relative to the deflection pulley 40 in such a way that they deflect the pull rope's path in a direction tangential to the deflection pulley in such a case. The rounded edge 54 of the respective angled guide surfaces 52, 53 serves this purpose, with this rounded edge 54 preferably being located very close to the plane of the deflection pulley 40. In this way, a feed that is as tangential as possible can be achieved.
[0044] Fig.Figure 8 shows another longitudinal section through a pulley system without a deflection pulley and without a pull rope. Due to the angle of the guide surface 51, an obtuse angle β is formed between the two sections of the guide surface 51 on the deflection pulley side. However, a guide surface need not be formed by two surface sections extending at an obtuse angle β to each other; an advantageous deflection of a pull rope in accordance with the invention can also be achieved with an overall curved guide surface. The convex side of a curved guide surface then points towards the deflection pulley. Such a curved or arched guide surface is arranged relative to the deflection pulley in such a way that, when the pull rope is in contact with the guide surface, it deflects it in a direction tangential to the deflection pulley. In such an embodiment, a funnel or semi-funnel formed by several guide surfaces would have the shape of a chalice.
[0045] Such a roller system can be mounted on the vehicle body in various orientations. For example, it can be installed so that the deflection roller is vertical and its axis of rotation is horizontal. Installation with a vertical deflection roller and a horizontal axis of rotation is also possible. Reference symbol list: 10-roller system 11 Mounting bracket, base body 12, 13 bearing half 14 Through holes 20,20',20" pull rope 30 rail 31 Inner flank 40 pulley 41. Encirclement sector 42 Axis of rotation of the deflection pulley 50 guide channel 51, 52, 53 Guide surface 54 Angle, edge 60 connecting clips α Opening angle β obtuse angle
Claims
[1] Cable guide arrangement for a power-operated vehicle sliding door with a driven pull cable (20) which is deflected by a roller system (10), wherein the roller system (10) has a bracket (11) in which a deflection pulley (40) is mounted, over which the pull cable (20) guided by the bracket (11) is deflected, and the roller system (10) is mounted at the end of a rail (30) on the side wall of a motor vehicle through which the pull cable (20) runs, wherein the rail (30) has a curved section with an inner flank (31), wherein the pull cable (20) slides along this inner flank (31) of the curved section when the vehicle sliding door is opened and / or closed, whereby an angular displacement of the pull cable (20) with respect to the guide pulley occurs when the vehicle sliding door is opened and / or closed, and wherein the deflection pulley (40) is vertical in the installed state of the cable guide arrangement and its axis of rotation runs horizontallyand wherein a guide channel (50) is formed on the bracket (11) of the roller system (10), through which the pull rope (20) is guided to the deflection pulley (40), characterized bythat the guide channel (50) has three guide surfaces (51, 52, 53), wherein a first guide surface (51) is designed as a curved guide surface whose convex side points towards the deflection pulley (40), and wherein the two guide surfaces (52, 53) run parallel to the plane of the deflection pulley (40), and wherein at least the curved guide surface (51) has an angle with a rounded edge (54) that lies outside a wrapping sector (41) of the pull rope (20) around the deflection pulley (40), and wherein the guide surfaces (51, 52, 53) form a conically tapered semi-funnel with an open longitudinal side that points towards the deflection pulley (40), wherein the pull rope (20), when in contact with one of the guide surfaces (51, 52, 53) of the guide channel (50), is tangential to the deflection pulley (40) in a direction is being diverted. [2] Rope guide arrangement according to claim 1, characterized by, that the two guide surfaces (52, 53) limit an angular offset in the course of the pull rope (20), which takes place in a plane parallel to the axis of rotation of the deflection pulley (40). [3] Rope guide arrangement according to claim 1 or 2, characterized by , that each guide surface (51,52,53) has an angle with a rounded edge (54). [4] Rope guidance arrangement according to one of the preceding claims, characterized by , that the individual guide surfaces (51, 52, 53) have angles which create a circumferential rounded edge (54) on the inside of the semi-funnel.